1. The utility model provides a highway road surface decelerator, its characterized in that includes speed reduction roller set and speed reduction roller set that set up along highway extending direction and includes base member (1) of a plurality of interval fixed mounting on the road surface, it has a plurality of expansion boards (3) to rotate with the axle center on base member (1) and install bobbin cradle (2) and follow its radial sliding installation, be connected with between bobbin cradle (2) and base member (1) transmission and be connected with lifter plate (4) of vertical slidable mounting on base member (1), transmission and lifter plate (4) cooperation satisfy: the lifting plate (4) is driven to vertically reciprocate;

an expansion device is connected between the lifting plate (4) and the expansion plates (3) and drives the expansion plates (3), and a plurality of transmission devices in the same speed reduction roller set are connected through a chain wheel set (5).

2. The highway pavement speed reducer according to claim 1, wherein a reciprocating screw (6) coaxially arranged with the barrel frame (2) is rotatably mounted on the base body (1), the lifting plate (4) and the reciprocating screw (6) are in threaded fit, the transmission device comprises a plurality of tooth systems (7) which are arranged on the inner circular surface of the bottom of the barrel frame (2) in a spaced and surrounding mode, a transfer gear (8) rotatably mounted on the base body (1) is meshed with the tooth systems (7), a transmission gear (9) coaxially and fixedly mounted with the reciprocating screw (6) is meshed with the transfer gear (8), and the chain wheel set (5) is used for connecting the reciprocating screws (6) in the same speed reducer roll set.

3. The highway pavement retarding device according to claim 1, wherein the expanding device comprises a transition plate (10) which is coaxially and rotatably installed with the lifting plate (4), a plurality of connecting rods (11) which are radially arranged on the outer circular surface of the transition plate (10) in a rotating mode are installed on the outer circular surface of the transition plate at equal intervals, and the other ends of the connecting rods (11) are respectively and rotatably installed with the corresponding expanding plate (3).

4. A road surface decelerating device for express highway according to claim 3, characterized in that the upper and lower ends of the expanding plate (3) are slidably mounted on the upper and lower walls of the barrel frame (2) through slide rods (12) fixedly connected with the expanding plate respectively, a telescopic spring (13) is connected between the slide rod (12) and the barrel frame (2), the outer arc surface of the expanding plate (3) is provided with an elastic damping pad, and the two end surfaces of the expanding plate (3) are chamfered.

5. An expressway pavement decelerating device according to claim 2, wherein a pit (14) arranged along the extending direction of the road is arranged on one side of each set of decelerating rollers and on the road next to the set of decelerating rollers, a plurality of rotating rollers (15) are rotatably arranged in the pit (14) at intervals, a protective frame (16) is vertically and slidably arranged in the pit (14), rectangular holes (17) matched with the plurality of rotating rollers (15) are formed in the protective frame (16) at intervals, a supporting device for supporting the protective frame (16) is slidably arranged in the pit (14), and the supporting device is driven by the chain wheel set (5).

6. The highway pavement retarding device according to claim 5, wherein the supporting device comprises a plurality of supporting rods (18) slidably mounted in the pit slot (14), a plurality of rotating wheels (19) are respectively rotatably mounted on the supporting rods (18) towards two ends and are respectively in fit contact with the bottom wall of the protective frame (16) and the bottom wall of the pit slot (14) through the rotating wheels (19);

one of the support rods (18) is integrally connected with a rack (20), the rack (20) is meshed with a support gear (21) rotatably installed in the pit groove (14), and the support gear (21) is connected with the chain wheel set (5) through a belt wheel set (22).

7. The highway pavement retarding device according to claim 6, characterized in that a plurality of sets of limiting devices are arranged along the axial direction of the rotating roller (15) at the side far away from the base body (1), each limiting device comprises a plurality of arc limiting plates (23) which are arranged along the radial direction in a sliding manner, and a limiting spring (24) is connected between each arc limiting plate (23) and the rotating roller (15).

8. An expressway surface decelerating device according to claim 7, wherein the protecting frames (16) on both sides of the rectangular hole (17) are provided with accommodating holes (25) which are matched with the plurality of groups of arc-shaped limiting plates (23).

9. A highway pavement deceleration method is characterized by comprising the following steps:

s1: when the automobile collides with the speed reduction roller set, the plurality of barrel frames are simultaneously driven to synchronously rotate, and the plurality of expansion plates periodically reciprocate along the radial direction of the barrel frames in the rotating process of the barrel frames, so that the acting force applied to the side surface of the automobile body is periodically changed, and the automobile is prevented from crossing the speed reduction roller set due to overlarge impact force and then rushing to an opposite lane;

s2: when the expansion plates move along the radial direction of the barrel frame, the expansion springs connected between the expansion plates and the barrel frame are compressed and partially absorb the energy generated by collision;

s3: when the plurality of barrel frames rotate, the support on the protective frame is synchronously released through the chain wheel group, wheels on one side, close to the barrel frames, of the vehicle are pressed on the rotating rollers, the driving efficiency of the wheels on the side is further reduced, the speed of the vehicle body on one side, close to the speed reduction roller group, of the vehicle is slightly lower than that of the vehicle body on the side far away from the speed reduction roller group, the vehicle has the tendency of turning towards the speed reduction roller group, and the phenomenon that the vehicle rebounds to the middle of a lane due to impact force generated when the vehicle impacts the speed reduction roller group is avoided;

s4: when the vehicle wheels are pressed on the rotating roller, the limiting device arranged on the rotating roller expands outwards to limit the wheels on one side of the vehicle close to the speed reduction roller set to turn towards one side far away from the speed reduction roller set, so that the vehicle is prevented from rebounding to the middle position of the lane to cause a secondary traffic accident.

10. The method of decelerating a highway pavement according to claim 9, wherein the expansion plate not hit by the vehicle on the creel in S2 is moved in a radial direction of the creel in synchronization and the expansion springs connected between the expansion plate and the creel are compressed, thereby realizing the effect that the expansion springs on the plurality of creels cooperate to absorb the energy generated by the collision.

Background

With the development of road infrastructure in China, more and more areas in China are covered by highways, and the rapid development of the highways generates huge and unvanishable contribution to the development of economic construction in China, but has to face a fact that: along with the rapid laying of a traffic road network, more and more traffic accidents come along, particularly, a series of traffic accidents are generated due to the high-speed running of vehicles while the commuting time is reduced when a highway is laid;

the existing protective measures taken when an automobile running on a highway is out of control are that anti-collision guardrails are arranged on two sides of the road, and when the automobile is out of control at a high speed (the automobile is blown out of tires, passes through a continuous curve at the high speed and the like), the automobile is impacted on the guardrails to buffer and decelerate the automobile, so that the occurrence of secondary accidents caused by the fact that the out-of-control automobile is filled into an opposite lane is avoided;

however, most of the existing anti-collision guardrails are iron fences fixedly mounted on the road surface, but the existing anti-collision guardrails have poor buffering effect on vehicles, are decelerated (the direction of an out-of-control vehicle cannot be corrected well) by means of rigid collision between a vehicle body and the fences, and have poor protection effect on the vehicles and internal personnel;

or the rotary guardrail can convert the acting force generated by the collision of the vehicles and the guardrails into the rolling friction force between the vehicles and the guardrails, which is far smaller than the sliding friction force between the traditional guardrails and the vehicles out of control, so that the vehicles out of control can be guided more easily, but when the vehicles collide the guardrails, no redundant space allowance is provided for the vehicles out of control to move, but the vehicles out of control can only move forwards along the guide of the guardrails (the magnitude of the interaction force between the guardrails and the vehicle bodies cannot be adjusted), if the speed of the vehicles out of control is faster (namely, the kinetic energy along the collision direction is larger), the vehicles are easy to pass the guardrails and impact to opposite lanes to cause secondary accidents, if the speed of the vehicles out of control is not fast, the vehicles are easy to receive the impact force to rebound when the vehicles collide the guardrails and rebound to the middle positions of the lanes where the vehicles out of control run, and the secondary accidents are easy to cause;

in view of the above, we provide an expressway road surface decelerating device for solving the above problems.

Disclosure of Invention

In view of the above situation, the present invention provides a highway pavement speed reducer, which can convert rolling friction between a vehicle and a barrel frame into reaction force of an expansion plate to the vehicle when the vehicle collides with the speed reducer, so that the friction resistance between the speed reducer roller set and the vehicle is increased to the greatest extent while the speed reducer roller set guides the vehicle, so as to accelerate speed reduction of the vehicle out of control, and the diameter of the speed reducer roller set periodically changes (the interaction force between the speed reducer roller set and the vehicle body also changes alternately) while the vehicle guides the speed reducer roller set, so that the vehicle out of control has a certain displacement margin along the collision direction, and the vehicle is prevented from crossing the speed reducer roller set and rushing to an opposite lane.

The utility model provides a highway road surface decelerator, its characterized in that includes that speed reduction roller set and speed reduction roller set that set up along highway extending direction include the base member of a plurality of intervals fixed mounting on the road surface, rotate with the axle center on the base member and install on barrel holder and the barrel holder along its radial slidable mounting have a plurality of expansion boards, be connected with transmission and transmission between barrel holder and the base member and be connected with the lifter plate of vertical slidable mounting on the base member, transmission and lifter plate cooperation satisfy: the lifting plate is driven to vertically reciprocate;

an expansion device is connected between the lifting plate and the expansion plates and drives the expansion plates, and a plurality of transmission devices in the same speed reduction roller set are connected through a chain wheel set.

Preferably, the base body is rotatably provided with a reciprocating screw rod which is coaxial with the barrel frame, the lifting plate and the reciprocating screw rod are installed in a threaded fit mode, the transmission device comprises a plurality of tooth systems which are arranged on the inner circle surface of the bottom of the barrel frame in an encircling mode at intervals, the tooth systems are meshed with transfer gears which are rotatably installed on the base body, the transfer gears are meshed with transmission gears which are coaxially and fixedly installed with the reciprocating screw rod, and the chain wheel set is used for connecting the reciprocating screw rods in the same speed reduction roller set.

Preferably, the expansion device comprises a transition plate which is coaxially rotatably installed with the lifting plate, and a plurality of connecting rods which are radially arranged along the transition plate are rotatably installed on the outer circle surface of the transition plate at equal intervals, and the other ends of the connecting rods are rotatably installed with the corresponding expansion plates respectively.

Preferably, the upper end and the lower end of the expansion plate are respectively slidably mounted on the upper wall and the lower wall of the barrel frame through sliding rods fixedly connected with the expansion plate, a telescopic spring is connected between the sliding rods and the barrel frame, an elastic damping pad is arranged on the outer arc surface of the expansion plate, and chamfering is carried out on two end surfaces of the expansion plate.

Preferably, be located every group speed reduction roller set one side and be equipped with the pot hole that sets up along road extending direction on its adjacent road, the vertical slidable mounting of pot hole internal interval rotation installation a plurality of commentaries on classics roller and pot hole has the protective frame, the interval is equipped with and changes roller complex rectangular hole with a plurality of commentaries on classics on the protective frame, slidable mounting has strutting arrangement and the strutting arrangement who is used for supporting the protective frame in the pot hole and is driven by sprocket group.

Preferably, the supporting device comprises a plurality of supporting rods which are slidably arranged in the pit groove, a plurality of rotating wheels are respectively rotatably arranged at the two upward ends of each supporting rod and are respectively in matched contact with the bottom wall of the protective frame and the bottom wall of the pit groove through the rotating wheels;

wherein, one of the supporting rods is integrally connected with a rack which is meshed with a supporting gear rotatably arranged in the pit slot, and the supporting gear is connected with the chain wheel set through a belt wheel set.

Preferably, it is equipped with a plurality of groups of stop devices and stop device along its axial to change roller and keep away from base member one side and include along its radial sliding installation's a plurality of arc limiting plates, be connected with spacing spring between arc limiting plate and the commentaries on classics roller.

Preferably, the protection frames positioned on two sides of the rectangular hole are provided with accommodating holes matched with the plurality of groups of arc limiting plates.

A highway pavement deceleration method comprises the following steps:

s1: when the automobile collides with the speed reduction roller set, the plurality of barrel frames are simultaneously driven to synchronously rotate, and the plurality of expansion plates periodically reciprocate along the radial direction of the barrel frames in the rotating process of the barrel frames, so that the acting force applied to the side surface of the automobile body is periodically changed, and the automobile is prevented from crossing the speed reduction roller set due to overlarge impact force and then rushing to an opposite lane;

s2: when the expansion plates move along the radial direction of the barrel frame, the expansion springs connected between the expansion plates and the barrel frame are compressed and partially absorb the energy generated by collision;

s3: when the plurality of barrel frames rotate, the support on the protective frame is synchronously released through the chain wheel group, wheels on one side, close to the barrel frames, of the vehicle are pressed on the rotating rollers, the driving efficiency of the wheels on the side is further reduced, the speed of the vehicle body on one side, close to the speed reduction roller group, of the vehicle is slightly lower than that of the vehicle body on the side far away from the speed reduction roller group, the vehicle has the tendency of turning towards the speed reduction roller group, and the phenomenon that the vehicle rebounds to the middle of a lane due to impact force generated when the vehicle impacts the speed reduction roller group is avoided;

s4: when the vehicle wheels are pressed on the rotating roller, the limiting device arranged on the rotating roller expands outwards to limit the wheels on one side of the vehicle close to the speed reduction roller set to turn towards one side far away from the speed reduction roller set, so that the vehicle is prevented from rebounding to the middle position of the lane to cause a secondary traffic accident.

Preferably, the expansion plate which is not impacted by the vehicle on the barrel frame in the step S2 synchronously moves along the radial direction of the barrel frame and enables the telescopic springs connected between the expansion plate and the barrel frame to be compressed, so that the telescopic springs on the plurality of barrel frames can jointly act to absorb energy generated by collision.

The beneficial effects of the technical scheme are as follows:

(1) when an out-of-control vehicle collides with the vehicle, rolling friction force between the vehicle and the barrel frame can be converted into reaction force of the expansion plate on the vehicle, so that the friction resistance between the speed reduction roller group and the vehicle is increased to the greatest extent while the speed reduction roller group guides the vehicle, the speed reduction of the out-of-control vehicle is accelerated, and the diameter of the speed reduction roller group periodically changes while the vehicle guides the speed reduction roller group, so that the out-of-control vehicle has certain displacement allowance (the magnitude of the action force applied to the vehicle body by the speed reduction roller group is periodically changed) along the collision direction of the out-of-control vehicle, and the situation that the out-of-control vehicle crosses the speed reduction roller group to impact an opposite lane due to the fact that the speed of the vehicle is too fast is avoided;

(2) in this scheme, when the vehicle of out of control collides with the speed reduction roller set, the vehicle is close to speed reduction roller set one side vehicle pressure and leads to this side wheel part to produce and skids on the commentaries on classics roller, make the vehicle be close to speed reduction roller set one side speed of a motor vehicle and be less than its speed of a motor vehicle of keeping away from speed reduction roller set one side a little, and then make the vehicle have the trend to speed reduction roller set one side removal, thereby better avoid leading to the vehicle to bounce to its lane intermediate position of traveling because of the reaction force that vehicle and speed reduction roller set striking produced, cause the secondary accident.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of another embodiment of the present invention;

FIG. 3 is a schematic view of the vehicle of the present invention as it is guided forward by the set of reduction rollers;

FIG. 4 is a schematic view of the expansion panels of the present invention when deployed;

FIG. 5 is a schematic view of the present invention with expansion plates separated from the cartridge holder;

FIG. 6 is a schematic view showing the relationship between the lifting plate and the reciprocating screw according to the present invention;

FIG. 7 is a schematic view showing the relationship between the rotary gear, the transmission gear and the gear system;

FIG. 8 is a schematic view of the present invention with the base and cartridge holder separated;

FIG. 9 is a schematic view of the wheel of the present invention pressed against a roller;

FIG. 10 is a schematic view of the reduction roller set of the present invention;

FIG. 11 is a schematic view showing the connection relationship between the sprocket set and the pulley set according to the present invention;

FIG. 12 is a schematic view showing the connection relationship between the support rod, the protective frame and the pulley set according to the present invention;

FIG. 13 is a schematic view of a support device according to the present invention;

FIG. 14 is a schematic view of the internal structure of the roller of the present invention.

Detailed Description

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments with reference to the accompanying drawings, in which reference is made to the accompanying drawings.

Embodiment 1, this embodiment provides an expressway pavement decelerating device, as shown in fig. 1, where a plurality of decelerating roller sets (each decelerating roller set may be disposed adjacent to each other or at a certain distance) are disposed along a road extending direction, each decelerating roller set includes a plurality of decelerating units (i.e., a base 1, a barrel frame 2, and an expansion plate 3) disposed at intervals, the decelerating roller sets may be disposed at edge positions of two lanes of a road and at a road middle position (i.e., a middle partition position of the two lanes), as shown in fig. 8, each decelerating roller set includes a plurality of base 1 fixedly disposed at intervals along the road extending direction, and a barrel frame 2 is rotatably mounted on the base 1, initially, the plurality of expansion plates 3 are in an outward expanding state (as shown in fig. 2), when a vehicle runs out of control (the vehicle blows out of tires or the driver's distraction causes the vehicle direction to shift) and collides with the decelerating roller sets at both sides of the road, the vehicle body firstly contacts with an expansion plate 3 which is slidably mounted on a barrel frame 2 and drives the barrel frame 2 to rotate along a corresponding base body 1 under the action of vehicle impact (the vehicle body contacts with the expansion plate 3 and drives the barrel frame 2 to rotate relative to the base body 1 through friction force between the vehicle body and the expansion plate), the advancing direction of the vehicle is corrected and guided in the rotating process of the barrel frame 2 (namely, the vehicle advances along the arrangement direction of a speed reduction roller set), meanwhile, the barrel frame 2 rotates relative to the base body 1, as shown in figure 4, under the cooperation of a transmission device and an expansion device, the expansion plate 3 moves towards the center of the barrel frame along the radial direction of the barrel frame 2, and a plurality of expansion plates gather towards the direction close to the center of the barrel frame, so that when the loss control vehicle impacts the speed reduction roller set, the loss control vehicle can continuously move a little displacement along the initial impact direction (the vehicle and the speed reduction roller set can still generate a little displacement along the impact direction after the vehicle is connected with the speed reduction roller set The vehicle can be prevented from passing over the speed reduction roller set and rushing to an opposite lane) and the vehicle has larger interaction force (from initial collision kinetic energy of the vehicle) between the vehicle and the speed reduction roller set under the guidance of the speed reduction roller set at the moment, so that when the expansion plates 3 are completely contracted inwards into the barrel frame 2, the expansion plates 3 are driven to expand outwards under the cooperation of the transmission device and the expansion device, and the expansion plates 3 which are slidably arranged on the barrel frame 2 expand outwards at the moment so as to actively apply certain acting force (to offset the impact acting force of the vehicle) to one side of the vehicle body, which is in contact with the speed reduction roller set, namely, the vehicle is pushed towards the direction far away from the speed reduction roller set by the applied acting force so as to offset the tendency that the vehicle continuously extrudes the speed reduction roller set;

as shown in fig. 10, because the plurality of transmission devices in the same speed reduction roller set are connected through the chain wheel set 5 (the chain wheel set 5 is arranged below the ground), when a vehicle impacts one of the barrel frames 2, the other barrel frames 2 which are not impacted yet are synchronously driven to rotate through the chain wheel set 5, that is, the plurality of barrel frames 2 in the speed reduction roller set rotate synchronously, and further under the cooperation of the transmission devices and the expansion devices, the plurality of expansion plates 3 which are matched with the barrel frames 2 can expand outwards along the corresponding barrel frames 2 synchronously, so that a certain reaction force is actively applied to the side, which is in contact with the speed reduction roller set, of the vehicle body, compared with the traditional guardrail, only by adopting a mode of being passively impacted by the vehicle (in the scheme, under the action of the plurality of expansion plates 3, the vehicle body can actively apply a reverse action force to the side of the vehicle body in the process of advancing along the speed reduction roller set), the correction of the vehicle direction can be better realized;

when the plurality of expansion plates 3 slidably mounted in the barrel frame 2 move outwards to the farthest distance, the expansion plates move in the opposite direction and towards the center of the barrel frame 2 again under the action of the matching of the transmission device and the expansion device (the transmission device drives the plurality of expansion plates 3 to reciprocate along the radial direction of the barrel frame 2), in the process that the expansion plates 3 move towards the center of the barrel frame, the acting force applied to the side surface of the vehicle body is reduced, so that the vehicle can continuously generate a slight displacement allowance towards the direction close to the speed reduction roller set (namely, the uncontrolled vehicle moves a slight distance towards the direction extruding the speed reduction roller set), and by periodically changing the positions of the plurality of expansion plates relative to the barrel frame (periodically changing the mutual acting force between the expansion plates and the vehicle body), the vehicle speed caused by the uncontrolled vehicle is excessively large (namely, the energy of collision is large at the initial time) and when the vehicle is blocked by the speed reduction roller set, if the speed reduction roller set only guides the advancing direction of the out-of-control vehicle and cannot lead the out-of-control vehicle to have certain displacement allowance along the collision direction, the out-of-control vehicle easily crosses the speed reduction roller set and rushes (overturns) to the opposite lane if the speed of the out-of-control vehicle is higher;

when the barrel frame 2 rotates to enable the plurality of expansion plates 3 to be completely contracted into the barrel frame again (at the moment, acting force exerted by the expansion plates 3 on one side of the vehicle body is the minimum), under the matching action of the transmission device and the expansion device, the plurality of expansion plates 3 are driven to move outwards along the radial direction of the barrel frame 2 again, and the acting force exerted on one side of the vehicle body is gradually increased in the outwards moving process, so that the vehicle is further restrained from moving towards the direction of the extrusion speed reduction roller group, note: the friction resistance between the expansion plate 3 and the vehicle body is increased (the interaction force between the expansion plate 3 and the vehicle body is increased) while the expansion plate 3 expands outwards, so that the advancing kinetic energy of the vehicle can be further weakened, and the vehicle can stop in a shorter time, in the embodiment, the position of the plurality of expansion plates 3 relative to the barrel frame 2 is periodically changed (namely, the interaction force between the speed reduction roller group and the vehicle body is periodically changed), so that the runaway vehicle has a certain displacement along the collision direction, namely, the runaway vehicle synchronously moves a slight distance towards the direction of the extrusion speed reduction roller group along with the process that the plurality of expansion plates 3 contract inwards the barrel frame 2 (the friction resistance between the vehicle and the plurality of expansion plates 3 further weakens the kinetic energy of the vehicle, so that the kinetic energy of the vehicle is further reduced), along with the process that the expansion plate 3 expands outwards, the force applied to the vehicle body side by the expansion plate 3 is increased (the force is generated by the friction resistance between the vehicle body and the expansion plate 3 driving the barrel frame 2 to rotate) to force the vehicle to move away from the speed reduction roller group, when the plurality of expansion plates 3 are expanded outwards to the maximum distance, the interaction force between the speed reduction roller group and the vehicle body side is maximum, the friction resistance between the vehicle body and the expansion plate 3 is maximum, when the plurality of expansion plates 3 are completely contracted into the barrel frame 2, the interaction force between the speed reduction roller group and the vehicle body side is minimum, and the friction resistance between the vehicle body and the expansion plate 3 is minimum, so that the advancing kinetic energy of the out-of-control vehicle is weakened (stopped in a short time) to the maximum extent while the vehicle is prevented from passing through the speed reduction roller group (towards the opposite lane) to the maximum extent.

Embodiment 2, on the basis of embodiment 1, as shown in fig. 4, a reciprocating screw 6 coaxially disposed with a barrel frame 2 is rotatably mounted on a base body 1, and a lifting plate 4 and the reciprocating screw 6 are installed in a screw-thread fit manner, as shown in fig. 7, when an out-of-control vehicle collides with the barrel frame 2 and contacts with an expansion plate 3, the vehicle moves along the setting direction of a reduction roller set under the action of kinetic energy of the vehicle and drives the barrel frame 2 to rotate relative to the base body 1 (the base body 1 is fixedly mounted on the ground) through frictional resistance between one side of the vehicle body and the expansion plate 3, during the rotation of the barrel frame 2, a transfer gear 8 rotatably mounted on the base body 1 is driven to rotate through a plurality of tooth systems 7 arranged on an inner circular surface below the barrel frame 2, the transfer gear 8 drives a transmission gear 9 engaged therewith to rotate so as to drive the reciprocating screw 6 to rotate, and drives the lifting plate 4 to move vertically on the base body 1 along with the rotation of the reciprocating screw 6, because the expansion device is connected between the lifting plate 4 and the expansion plates 3, the expansion plates 3 are driven to move along the radial direction of the barrel frame 2 by the expansion device while the lifting plate 4 moves vertically;

due to the arrangement of the reciprocating screw rod 6, the lifting plate 4 is driven to vertically reciprocate in the rotating process of the barrel frame 2 relative to the base body 1, the expansion plates 3 are driven to radially reciprocate along the barrel frame 2 through the expansion device, the effect of periodically changing the positions of the expansion plates 3 relative to the barrel frame 2 is achieved, the expansion plates 3 are different in position relative to the barrel frame 2, the size of the interaction force between the expansion plates 3 and one side of the vehicle body is different (namely, the reaction force of the deceleration roller group on the out-of-control vehicle is periodically increased or reduced), the kinetic energy of the out-of-control vehicle is continuously consumed in the process, and the situation that the vehicle crosses the deceleration roller group to rush (overturn) to an opposite lane due to the fact that the vehicle is blocked by the deceleration roller group is well avoided.

Embodiment 3, on the basis of embodiment 1, as shown in fig. 7, the expansion device includes a transition plate 10 which is coaxially and rotatably mounted with the lifting plate 4, as shown in fig. 5, a plurality of connecting rods 11 which are radially arranged along the transition plate 10 are rotatably mounted on the outer circumferential surface of the transition plate 10 at equal intervals, and when the lifting plate 4 vertically moves under the action of the reciprocating screw 6, the transition plate 10 and the connecting rods 11 which are coaxially and rotatably mounted drive the plurality of expansion plates 3 to radially move along the barrel frame 2;

the transition plate 10 and the lifting plate 4 are coaxially and rotatably mounted, so that the transition plate 10 can be synchronously driven to ascend along with the ascending of the lifting plate 4, and the rotation of the bobbin bracket 2 (a plurality of expansion plates 3) relative to the base body 1 is also met.

Embodiment 4, on the basis of embodiment 3, as shown in fig. 5 and 6, the upper and lower ends of the expansion board 3 are slidably mounted on the upper and lower walls of the barrel frame 2 through the sliding rods 12 fixedly connected thereto, the telescopic springs 13 are connected between the sliding rods 12 and the upper and lower walls of the barrel frame 2, and the telescopic springs 13 are disposed between the sliding rods 12 and the barrel frame 2, so that the expansion board 3 can partially absorb the kinetic energy of the out-of-control vehicle by pressing the telescopic springs 13 in the process of moving along the radial direction of the barrel frame 2 (the expansion board 3 expands radially outward along the barrel frame 2);

in order to better facilitate the implementation of the scheme, a layer of elastic damping pad (specifically, an elastic rubber pad or an elastic rubber pad and a material with a larger friction coefficient are covered on the outer arc surface of the expansion plate) is covered on the outer arc surface of the expansion plate 3, so that the expansion plate has a certain degree of elastic deformation capability and a larger friction coefficient, the expansion plate 3 is covered with the elastic rubber pad to realize primary buffering to a certain degree (the elastic damping pad is deformed when being collided and extruded by a vehicle body) when the out-of-control vehicle is impacted, and meanwhile, the friction resistance between the expansion plate 3 and one side of the vehicle body (the kinetic energy of the vehicle is absorbed and the driving barrel frame to rotate relative to the base body) can be increased, and the out-of-control vehicle stops moving in as short time as possible;

if the out-of-control vehicle is a household car, the self-weight is light, when the out-of-control vehicle collides with the speed reduction roller set, the car can be forced to move a little distance towards the direction far away from the speed reduction roller set in the process that the expansion plate 3 periodically moves relative to the barrel frame 2, particularly in the process that the expansion plate 3 expands outwards, when the out-of-control vehicle is a heavy truck, the self-weight is large, when the out-of-control vehicle collides with the speed reduction roller set, in the process that the expansion plate 3 periodically moves relative to the barrel frame 2, particularly in the process that the expansion plate 3 expands outwards, the heavy truck can not be pushed and can move towards the direction far away from the speed reduction roller set through the interaction force between the expansion plate 3 and the truck body, at the moment, the effect of changing the interaction force between the heavy truck and the heavy truck (the interaction force between the speed reduction roller set and the truck body can still be changed in a mode of extruding the elastic damping pads arranged on the outer arc surface If the friction resistance between the elastic damping pad arranged on the outer arc surface of the expansion plate 3 and the vehicle body is large, the out-of-control vehicle deceleration effect can be realized;

as shown in fig. 5, the end surfaces of the two sides of the expansion boards 3 are chamfered to avoid a smooth transition between the two ends of the expansion boards 3 and the vehicle body when the expansion boards 3 are unfolded and rotated under the action of the barrel frame 2.

Embodiment 5, on the basis of embodiment 2, in order to avoid a secondary accident caused by a vehicle rebounding to the middle position of a driving lane of the vehicle due to a reaction force when the uncontrolled vehicle impacts the speed reduction roller set, the embodiment makes a further improvement, and the specific improvement scheme is as follows:

as shown in fig. 2, a pit 14 arranged along the extending direction of the road is arranged on the road on one side of each group of speed reduction roller sets and next to the speed reduction roller sets, a plurality of rotating rollers 15 (the rotating rollers 15 are rotatably arranged along the driving direction of the vehicle) are rotatably arranged in the pit 14 at intervals, and a protective frame 16 is vertically and slidably arranged in the pit 14, when no vehicle impacts the speed reduction roller sets, the upper end surface of the protective frame 16 is flush with the road surface under the action of a supporting device, as shown in fig. 1, the highest point of the plurality of rotating rollers 15 is lower than the upper end surface of the protective frame 16, that is, even if the vehicle is rolled on the protective frame 16, the wheels cannot contact with the rotating rollers 15 (the normal driving of the vehicle is not hindered);

as shown in fig. 10, rectangular holes 17 are provided at intervals on the protection frame 16 to match with the rotating rollers 15, when the protection frame 16 moves downwards along the pit slot 14, the rotating rollers 15 are enabled to pass through the corresponding rectangular holes 17 and the wheels are enabled to press on the rotating rollers 15 (the wheels are enabled to contact with the rotating rollers 15, as shown in fig. 9), as shown in fig. 11, initially, the protection frame 16 is enabled to keep the upper end surface thereof in a flush state with the road surface under the action of the supporting device, when an uncontrolled vehicle contacts with the speed reduction roller group and the barrel frame 2 rotates relative to the base body 1, the supporting device is synchronously driven by the chain wheel group 5 to move in the pit slot 14 towards the direction close to the speed reduction roller group, so that the upper end surface of the supporting device is no longer contacted with the lower end surface of the protection frame 16 (even if the wheels on one side of the vehicle press on the protection frame 16, because the energy is larger at the moment of collision between the vehicle and the speed reduction roller group, the supporting device can be driven to move relative to the protective frame 16 through the chain wheel set 5), at this time, the protective frame 16 moves downwards along the pit slot 14 under the pressure of the vehicle wheels (a slide way (not shown in the figure) which is in vertical sliding fit with the protective frame 16 is arranged on the side wall of the pit slot 14, so that when the protective frame 16 is no longer supported by the supporting device, the protective frame 16 stops falling when the protective frame 16 descends to the bottom wall of the slide way along the pit slot 14, at this time, the lower end face of the protective frame 16 is higher than the rotating shaft of the rotating roller 15 and does not obstruct the rotation of the rotating roller 15), at this time, the vehicle wheel close to the speed reduction roller set side presses on the rotating roller 15, thereby causing the slipping phenomenon (low driving efficiency) of the vehicle wheels of the vehicle, as shown in figure 3, at this time, the vehicle wheel far away from the speed reduction roller set side contacts with the ground (high driving efficiency), therefore, the vehicle has a tendency of moving towards the direction close to the speed reduction roller set, and the phenomenon that the vehicle rebounds towards the middle position of the lane (the vehicle collides with the vehicle normally running on the lane to cause a secondary accident) caused by the reaction force generated when the vehicle collides with the speed reduction roller set can be avoided;

note: when the slide way which is vertically and slidably matched with the protective frame 16 is arranged, when the supporting device is not supported to the protective frame 16 any more and the protective frame 16 moves downwards to the lowest position in the pit slot 14 along the slide way, the wheel is only contacted with the part of the rotating roller 15, namely, the wheel is still contacted with the protective frame 16 (i.e. the part between two adjacent rectangular holes 17 on the protective frame 16), so that the wheel of the vehicle only has slight skidding phenomenon (the vehicle is prevented from hurling towards the side close to the speed reduction roller set due to the larger speed difference between two sides, and the situation can also aggravate the out-of-control state of the vehicle), when the wheels on the side of the vehicle close to the speed reduction roller group slightly slip, the vehicle has a force for turning towards the speed reduction roller group, so as to counteract the reaction force when the vehicle impacts the speed reducing roller group, thereby reducing the possibility of the vehicle rebounding to the middle position of the driving lane of the vehicle to the maximum extent.

Example 6, on the basis of example 5, as shown in fig. 11, the supporting device includes a plurality of supporting rods 18 slidably installed in the pit 14 (the supporting rods 18 are disposed below the protective frame 16 between two adjacent rectangular holes 17, each group of supporting devices includes two parts, and each part includes three supporting rods 18 fixedly connected together, as shown in fig. 11 and 13), as shown in fig. 13, a plurality of rotating wheels 19 are respectively rotatably installed on the supporting rods 18 towards two ends and are respectively in fit contact with the bottom wall of the protective frame 16 and the bottom wall of the pit 14 via the rotating wheels 19, grooves (not shown in the figure) matched with the rotating wheels 19 are disposed on the bottom wall of the pit 14 and the lower end surface of the protective frame 16, so as to limit the supporting rods 18 and enable the supporting rods 18 to move only along the direction of the grooves, a rack 20 is fixed on one of the three fixedly connected supporting rods 18, and the rack 20 is engaged with a supporting gear 21 rotatably installed in the pit 14, as shown in fig. 12, a support gear 21 is connected to a reciprocating screw 6 mounted on one of the base bodies 1 via a pulley group 22, namely, when the chain wheel set 5 drives the plurality of barrel frames 2 to synchronously rotate (the plurality of reciprocating screw rods 6 synchronously rotate), the supporting gear 21 is driven to rotate by the belt wheel set 22 and the supporting rod 18 of the supporting and protecting frame 16 is driven to move towards the direction close to the speed reduction roller set by the rack 20, so that the support bar 18 is removed from under the protective frame 16 (as shown in fig. 11, a cavity for receiving the support bar 18 is provided in the road and communicates with the pit 14), it is set that when the support bar 18 is removed from under the protective frame 16, the support gear 21 no longer meshes with the teeth on the rack 20, as shown in fig. 13, the side of the rack 20 adjacent to the support bar 18 is not provided with teeth, during the subsequent rotation of the creel 2, the support gear 21 does not drive the rack 20 to move any more but performs idle rotation;

because the upper end and the lower end of the support rod 18 are respectively contacted with the lower end surface of the protective frame 16 and the bottom wall of the pit slot 14 through the rotating wheel 19, the friction resistance between the support rod 18 and the bottom wall of the pit slot 14 and the lower end surface of the protective frame 16 is further reduced, and the support rod 18 can be easily moved away from the lower part of the protective frame 16;

as shown in fig. 11, initially, the upper end surfaces of the supporting rods 18 abut against the lower end surfaces of the protecting frames 16 and support the protecting frames 16, when a vehicle collides with the speed reduction roller set, the chain wheel set 5 drives the supporting rods 18 to move towards the direction close to the speed reduction roller set, so that when the supporting rods 18 are completely removed from the lower side of the protecting frames 16, the protecting frames 16 move downwards in the pit slot 14 and make the wheels contact with the rotating rollers 15 (so that the wheels on the side of the vehicle body close to the speed reduction roller set slightly slip), and then the driving efficiency of the vehicle body is reduced (slightly reduced) relative to the wheels on the side of the vehicle body far from the speed reduction roller set.

Example 7, based on example 6, as shown in fig. 2, preferably, there are several sets of limiting devices on the side of the rotating roller 15 away from the substrate 1 along the axial direction thereof, as shown in fig. 14, the limiting devices include several arc limiting plates 23 (two rows of arc limiting plates 23 are provided in this embodiment and are arranged along the axial direction of the rotating roller 15) slidably mounted along the radial direction thereof, a limiting spring 24 is connected between the arc limiting plates 23 and the rotating roller 15, initially, when the rotating roller 15 is not rotated, the several arc limiting plates 23 are contracted inside the rotating roller 15 and the outer arc surfaces thereof are flush with the outer circular surface of the rotating roller 15 (as shown in fig. 12), when the wheels are pressed on the rotating roller 15 and the rotating roller 15 is rotated, the arc limiting plates 23 are subjected to the centrifugal force generated by the rotation of the rotating roller 15, and then the several arc limiting plates 23 are forced to move radially outward along the rotating roller 15, as shown in fig. 14, at this time, the arc limiting plates 23 extend outward from the rotating roller 15 (as shown in fig. 2), the outwardly extending arc-shaped limiting plates 23 can play a role of limiting wheels pressed on the rotating rollers 15 by the vehicle, as shown in fig. 9, if the vehicle tends to turn towards the middle of the driving lane, the wheels near one side of the speed reduction roller set are limited by the arc-shaped limiting plates 23 outwardly extending from the rotating rollers 15 and cannot turn, so that the vehicle is further limited from rebounding towards the middle of the driving lane;

as shown in fig. 14, the arc-shaped limiting plates 23 are provided with arc-shaped chamfers at two ends thereof, if the wheel is pressed at the position of one row of the arc-shaped limiting plates 23, the group of the arc-shaped limiting plates will not extend out of the rotating roller 15 due to the obstruction of the wheel to the outer plate, or the wheel is pressed on the arc-shaped limiting plates 23 which are close to one side of the speed reduction roller group and extend out of the rotating roller 15 during the moving process along the rotating roller 15, so that the group of the arc-shaped limiting plates 23 can be forced to contract into the rotating roller 15 without affecting the advancing of the vehicle.

Embodiment 8, on the basis of embodiment 7, as shown in fig. 12, the receiving holes 25 engaged with the plurality of sets of arc-shaped limiting plates 23 are provided on the protective frame 16 located at both sides of the rectangular hole 17, and when the rotating roller 15 rotates under the action of the wheels and the plurality of arc-shaped limiting plates 23 are made to extend outward from the rotating roller 15, the rotation radius of the outer arc-shaped surface of the plurality of arc-shaped limiting plates 23 extending outward from the rotating roller 15 is larger than the rotation radius of the outer arc-shaped surface of the rotating roller 15, so the receiving holes 25 engaged with the plurality of arc-shaped limiting plates 23 need to be provided on the protective frame 16, so that the arc-shaped limiting plates 23 are not blocked during the rotation of the rotating roller 15.

Embodiment 9, based on the above apparatus, the present invention provides a method for decelerating a highway pavement, including the steps of:

s1: when an automobile collides with the speed reduction roller set, the plurality of barrel frames 2 are driven to synchronously rotate, and the plurality of expansion plates 3 periodically reciprocate along the radial directions of the barrel frames 2 in the rotating process of the barrel frames 2, so that the acting force applied to the side surface of the automobile body is periodically changed (the positions of the expansion plates 3 relative to the barrel frames 2 are periodically changed), the kinetic energy of the out-of-control automobile is weakened to the greatest extent in the guiding and advancing process of the out-of-control automobile along the speed reduction roller set in a stable manner in the process that the acting force applied to the side surface of the automobile body by the expansion plates is periodically changed, and the automobile is prevented from crossing the speed reduction roller set due to overlarge impact force so as to rush to an opposite lane;

s2: when the plurality of expansion plates 3 are expanded and moved radially outward along the barrel frame 2, the expansion springs 13 connected between the expansion plates 3 and the barrel frame 2 are compressed and partially absorb energy generated by the collision;

s3: when a plurality of barrel frames 2 rotate, the supporting device is synchronously released from supporting the protective frame 16 through the chain wheel set 5, wheels on one side of the vehicle close to the barrel frames 2 are pressed on the rotating rollers 15, so that the driving efficiency of the wheels on the side of the vehicle close to the speed reduction roller set is reduced, the speed of the vehicle body on one side of the vehicle close to the speed reduction roller set is slightly lower than that of the vehicle body on one side far away from the speed reduction roller set, the vehicle has the tendency of turning towards the speed reduction roller set, and the vehicle is prevented from rebounding to the middle of a lane due to impact force generated when the vehicle impacts the speed reduction roller set;

s4: when the vehicle wheel pressed on the roller 15, the roller 15 was rotated in the drive, and the stop device who locates on the roller 15 at this moment outwards expanded under the effect of centrifugal force, and restriction vehicle was close to speed reduction roller set one side wheel and is far away from speed reduction roller set one side and turn to avoid the vehicle to bounce to the lane intermediate position and take place the secondary traffic accident.

Embodiment 10, on the basis of embodiment 9, because the bottoms of the reciprocating screws 6 are connected through the chain wheel set 5, when one of the barrel frames 2 in the speed reduction roller set rotates (the reciprocating screws 6 are driven to rotate by the transmission device), the reciprocating screws 6 synchronously drive the reciprocating screws 6 on the other base bodies 1 to rotate through the chain wheel set 5, and then the other barrel frames 2 are driven to rotate relative to the base bodies 1 through the transmission device, in S2, the expansion plate 3 which is not impacted on the barrel frame 2 by the vehicle can simultaneously move along the radial direction of the barrel frame 2, and the expansion springs 13 connected between the expansion plate 3 and the barrel frame 2 are compressed, so that the expansion springs 13 on the plurality of barrel frames 2 jointly absorb energy generated by collision.

The above description is only for the purpose of illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are within the scope of the present invention.