1. The walking system for the walking device comprises supporting legs, wherein each supporting leg comprises a connecting rod mechanism (4) and a driving and rotating device (3) for driving the connecting rod mechanism (4) to stretch and retract;

a wheel carrier (7) for mounting the travelling wheel (5) is arranged on the connecting rod mechanism (4); the device is characterized by also comprising a cylinder (2), wherein one of the cylinder body part and the piston rod part of the cylinder (2) is fixedly connected with the wheel carrier (7), and the other is fixedly provided with a connecting piece (8);

a rotating shaft is arranged on the connecting piece (8), and the air cylinder (2) can rotate around the rotating shaft;

the rotating shaft on the connecting piece (8) is parallel to the axis of the rotating shaft on the connecting rod mechanism (4);

and a locking piece is further arranged on the connecting piece (8), and the locking piece is used for realizing the rotation locking of the cylinder (2) relative to the rotating shaft.

2. The walking system for walking means according to claim 1, wherein the linkage mechanism (4) comprises a third connecting rod (43), a first connecting rod (41) and a second connecting rod (42), the first connecting rod (41) and the second connecting rod (42) are hinged to different positions of the third connecting rod (43) in the length direction through rotating shafts;

the driving device (3) is a joint driving motor connected to the first connecting rod (41) or the second connecting rod (42).

3. The walking system for the walking device of claim 1, further comprising a gas source device for providing a compressed gas source for the cylinder (2), wherein the gas source device is a compressed gas cylinder.

4. The walking system for walking means of claim 1, characterized in that said cylinder (2) is a single cylinder double acting cylinder, the piston rod portion of said cylinder (2) is fixedly connected with the wheel carrier (7), said connecting member (8) is connected on the cylinder portion of the cylinder (2).

5. The walking system for walking means of claim 1, further comprising a walking wheel (5) mounted on said wheel carrier (7), further comprising a driving means (6) for driving said walking wheel (5) to rotate, said driving means (6) being a dc motor.

6. Walking device comprising a frame (1) and further comprising legs mounted on the frame (1), characterized in that the legs are the legs of any one of claims 1 to 5;

the air cylinder (2) is rotatably connected to the rack (1) through a connecting piece (8), and a rotating shaft on the connecting piece (8) is used as a rotating shaft of the air cylinder (2) rotating relative to the rack (1);

the driving and rotating device (3) is fixedly arranged on the rack (1).

7. The walking device of claim 6, wherein the leg is plural; each supporting leg is provided with a travelling wheel (5); each supporting leg is matched with a cylinder (2).

8. The walking device according to claim 6, wherein the frame (1) comprises a hollow bearing platform, the bearing platform comprises a top plate and a bottom plate, and the top plate and the bottom plate enclose a hollow space on the bearing platform;

the energy storage device is used for providing power sources for the air cylinder (2) and the driving device (3).

9. A walking method for a walking device, characterized in that the walking method is a walking method for the walking device according to claim 6;

the air cylinder (2) and the supporting legs are used as supporting parts of the rack (1), and the height of the rack (1) is lifted and bounced through the extension and retraction of the air cylinder (2) and the connecting rod mechanism (4);

wherein, the mode of providing support to frame (1) does: in the whole or partial process of the walking device, the state constraint of the driving and rotating device (3) on the link mechanism (4) is removed, so that the link mechanism (4) can freely stretch and retract, and the frame (1) is supported by the cylinder (2);

when the frame (1) is lifted and lowered: removing the constraint of the cylinder (2) on the extension and retraction of the link mechanism (4), and driving the link mechanism (4) to extend and retract by using the driving device (3) to complete the height adjustment of the rack (1);

when the frame (1) jumps, the connecting rod mechanism (4) is used for compressing the gas in the cylinder (2) to realize the force storage of the cylinder (2).

10. The walking method for a walking device of claim 9, wherein the means for providing support to the frame (1) comprises means one and means two;

the first mode is as follows: the frame (1) is supported only by the cylinder (2);

the second mode is as follows: the frame (1) is supported by the cylinder (2) and the connecting rod mechanism (4) together;

the first mode and the second mode can be switched randomly;

when frame (1) plays the jump, drive commentaries on classics device (3) and cylinder (2) and provide the jump power for frame (1) jointly: after the power is stored in the cylinder (2), the driving device (3) provides extended power for the connecting rod mechanism (4) and the air source provides extended power for the cylinder (2);

in the process that the rack (1) takes off and jumps to the ground, the telescopic constraint of the link mechanism (4) by the driving and rotating device (3) is removed, and the state that the rack (1) is supported by the ground by only using the air cylinder (2) is obtained.

Background

In the tasks of bomb disposal and mine elimination, earthquake rescue, mine disaster search and rescue, jungle battle and the like, the terrain environment is complex, the operation conditions are hard, the traditional operation mode is generally operated directly by personnel, casualties and great loss are often caused, meanwhile, a large amount of instruments and equipment are required to be carried in field operation, the task load is heavy, the personnel load capacity is limited, and the single task benefit is greatly limited by the traditional operation mode.

Taking the existing walking robot as an example, in the prior art, mobile devices capable of running autonomously are widely used for executing various tasks, and along with the diversification of a motion system matched with the mobile devices and the development of a control technology, in the military and civil fields, the mobile devices gradually replace the traditional manual operation with the advantage that the direct operation of personnel cannot be compared.

The existing wheel-leg combined type motion platform has various structures, typically comprises Finland PAW, North aviation NOROS, Japanese Work' n Roll and Chinese academy HyTro, and has simple structure and high stability. In addition, as patent application numbers: the technical schemes of CN201210219117.X, CN202011524973.7, CN202011007980.X, CN201810597168.3 and CN202010806731.0 also provide a plurality of different motion platforms capable of executing corresponding tasks.

In order to adapt to different terrain requirements or motion requirements, the development direction of the current motion platform is a multi-mode direction, a plurality of sets of motion modules are generally adopted for the walking driving system to accumulate, and the structure of the walking driving system is relatively complex. For obstacle crossing purposes, the existing wheeled mobile equipment is provided with mechanical legs, wheels of which have advantages in moving on flat ground and are finished in a bouncing manner in crossing obstacles.

The structural design of the walking device is further optimized to improve the working efficiency, the working stability and the controllability of the walking device, so that the walking device is an important direction for the development of the sports device technology and has important significance to the industry.

Disclosure of Invention

The invention provides a walking device, a walking system for the walking device and a walking method, aiming at the technical problems that the structural design of the walking device is further optimized to improve the working efficiency, the working stability and the controllability of the walking device, and the walking device is an important direction for the development of the sports device technology and has important significance to the industry. The technical scheme that this scheme of adoption provided not only can optimize in running gear's bearing capacity and response speed, simple structure simultaneously, adaptation that can be good jolts the road conditions.

In order to solve the above problems, the walking device, the walking system for the walking device and the method provided by the invention solve the problems by the following technical points: the walking system for the walking device comprises supporting legs, wherein each supporting leg comprises a connecting rod mechanism and a driving and rotating device for driving the connecting rod mechanism to stretch and retract;

the connecting rod mechanism is provided with a wheel carrier for mounting a travelling wheel; the cylinder body part of the cylinder and the piston rod part of the cylinder are respectively fixedly connected with the wheel carrier, and the other is fixedly provided with a connecting piece;

the connecting piece is provided with a rotating shaft, and the air cylinder can rotate around the rotating shaft;

the rotating shaft on the connecting piece is parallel to the axis of the rotating shaft on the connecting rod mechanism;

the connecting piece is further provided with a locking piece, and the locking piece is used for realizing the rotation locking of the air cylinder relative to the rotating shaft.

In the prior art, as described in the technical solution provided in the patent application with application number CN202010806731.0, in order to solve the obstacle crossing capability of the wheel-type mobile device and improve the stability during the moving process, a link mechanism with a telescopic function is adopted, and under the action of a telescopic driving member, the height adjustment of the machine frame and the taking-off and obstacle crossing are realized. Meanwhile, in the scheme, a form that the telescopic driving piece adopts a motor is disclosed. In the field related to the scheme, as the lifting form or the movement mode of the telescopic legs is adopted, for example, the driving scheme provided by the technical scheme with the application number of CN201810595071.9 and the like is also mostly adopted to finish walking and lifting driving by using a motor.

Simultaneously, consider current motor driving capability, concrete structural design etc. the flexible driving piece that current leg running gear adopted generally is equipped with elastic mechanism to match mobile device's bearing capacity and self lightweight design: in particular to the technical proposal provided by the invention patent applications with application numbers of CN201610206266.0, CN202010751681.0 and the like.

This scheme is to current design, provides one kind not only can realize walking speed and walking stability concurrently, simple structure, bearing capacity are strong simultaneously, the fast technical scheme of lift adjustment response speed. This scheme is when specifically using, as running gear's traveling system, and specifically install and be: the cylinder is rotatably connected to a frame of the walking device through a connecting piece, and a rotating shaft on the connecting piece is used as a rotating shaft of the cylinder relative to the frame; the driving and rotating device is fixedly arranged on the rack, and a travelling wheel of the driving device is arranged on the wheel frame. Therefore, the driving device can realize the length adjustment of the connecting rod mechanism by driving the corresponding connecting rod on the connecting rod mechanism to rotate, and in the length change process of the connecting rod mechanism, the air cylinder is connected between the wheel carrier and the rack, so that the rotating shaft arranged on the connecting piece aims to ensure that the air cylinder can rotate to be synchronous with the length change of the connecting rod mechanism at the moment. The locking piece is arranged at the same time, so that the rotation of the air cylinder relative to the frame can be locked, and the air cylinder can have the capacity of supporting the frame.

The structural foundation of the walking system provided above can realize: the cylinder and the supporting legs are used as supporting parts of the rack, and the height lifting and the take-off of the rack are realized through the expansion of the cylinder and the connecting rod mechanism; wherein, the mode of providing the support to the frame does: in the whole or partial process of the walking device, the state constraint of the driving device on the link mechanism is removed, so that the link mechanism can freely stretch and retract, and the support of the rack is realized through the air cylinder; when the frame is lifted and lowered: removing the constraint of the cylinder on the extension and retraction of the link mechanism, and driving the link mechanism to extend and retract by using the driving device to complete the height adjustment of the rack; when the machine frame is lifted and jumped, the connecting rod mechanism is used for compressing the gas in the cylinder to realize the force storage of the cylinder.

The height lifting is used for meeting the passing requirement of the rack: when the ground is flat, the gravity center of the walking device is lowered through the contraction of the connecting rod mechanism, so that the walking speed is increased; when walking on the hollow ground, the accessible link mechanism extends for the frame is supported by the high-order, with the mode of sacrificing the focus height, avoids frame contact ground, promotes running gear's throughput. The jumping is used for the walking device to cross obstacles, so that the walking device has all-terrain adaptability. When the rack is supported, the constraint of the driving and rotating device on the extension and retraction of the connecting rod mechanism is removed according to needs, and the rack is supported only by using the air cylinder, so that the characteristic of compressible air in the air cylinder body can be utilized, the support structure of the rack can absorb impact, and the damping function is realized to adapt to bumpy road conditions; meanwhile, the mode that only the air cylinder supports the frame can be used for landing buffering. Therefore, the shock absorption can be realized, and meanwhile, as for a double-wheel-foot walking mode (only two walking wheels are arranged on the walking device or only two walking wheels are adopted to form a wheel train under certain working conditions), the requirement on the balance capacity of balance parts carried on the walking device can be reduced. Simultaneously, above scheme still is particularly useful for running gear self subtracts heavy design demand: in the prior art, if foot-type bouncing is realized through a motor, the inertia of the motor itself needs to be considered, and if a low-inertia motor is generally adopted, the bouncing is realized in a manner that: the scheme also has the characteristics of relatively complex structure and relatively complex control strategy. And this scheme of adoption, cylinder itself can regard as energy storage component and as the power component when bouncing for single part can the multipurpose on this traveling system, is convenient for realize running gear subtracts heavy design and the design of simple structure. By adopting the scheme, after the power storage is completed, the driving device and the air cylinder can further apply work for the connecting rod mechanism, and the capability of the walking device for jumping obstacles is improved through the combined action of multiple parts. Adopt this scheme simultaneously, because the cylinder generally has the characteristics of big inertia, low response, be different from the device of rotating that drives that generally is the motor, have bigger bearing capacity under the prerequisite that the volume is littleer, weight is lighter, and the model selection of motor in the field generally is the motor of low inertia, high response, so this scheme can adopt when carrying out frame height control: remove the cylinder to link mechanism's restraint (remove the locking of locking piece to the cylinder and remove the restraint of gas circuit system to cylinder piston motion), only utilize the device work of driving commentaries on classics, realize frame height high accuracy and high efficiency and adjust, then reuse the cylinder to carry out auxiliary stay to the frame or convert the mode that only the cylinder supported the frame into, so not only can promote frame height control accuracy, can guarantee running gear bearing capacity and reliability at whole task in-process simultaneously.

For the design of connecting piece, when specifically using, can set up to the connecting piece and include the second hoop body that is used for the first hoop body of fixed connection frame and is used for fixed connection cylinder, first hoop body and second hoop body pass through the pivot and connect. The corresponding locking piece is just required to adopt a rotating shaft locking device. Meanwhile, as a person skilled in the art, the above wheel carrier may be the link mechanism itself, or may be a separate component mounted on the link mechanism.

As a further technical scheme of the walking system:

as a concrete implementation mode of the link mechanism, the link mechanism is provided with the following components: the connecting rod mechanism comprises a third connecting rod, a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod are hinged to different positions of the third connecting rod in the length direction through rotating shafts;

the driving device is a joint driving motor connected to the first connecting rod or the second connecting rod. When the link mechanism is applied to a walking device, the joint driving motor is used as a low-inertia high-response electric driving power source and is installed on the rack, if the driving device is connected with the first link, the second link is hinged with the rack, so that the rack, the first link, the second link and the third link form a four-link mechanism, and if the driving device drives the first link to rotate, if the third link is used as a wheel carrier or the wheel carrier is installed on the third link, the height adjustment of the upper walking wheel of the wheel carrier relative to the rack can be realized. The link mechanism is simple in form and structure, reliable in performance, free of other auxiliary structures and beneficial to lightweight design of the walking device.

More complete, for the load that alleviates running gear when independently operating, set up as: the air source device is used for providing a compressed air source for the air cylinder, and the air source device is a compressed air cylinder. When the pneumatic system is used specifically, the compressed gas cylinder provides compressed gas for the cylinder through the gas circuit and the corresponding gas circuit element, so that the pneumatic system which is carried on the walking device and comprises the gas source device and the cylinder has the characteristics of light weight and simple structure.

As a technical scheme that the bidirectional controllability is high, a cylinder body is connected with a rack through a connecting piece, and a piston rod is connected with a wheel carrier, the technical scheme is as follows: the cylinder is a single-cylinder double-acting cylinder, a piston rod part of the cylinder is fixedly connected with the wheel carrier, and the connecting piece is connected to a cylinder body part of the cylinder. By adopting the scheme, the characteristics that the outer diameter of the piston rod part is smaller than that of the cylinder body part are utilized, and the arrangement of the walking wheels, the driving device, the connecting rod mechanism and the like is convenient to complete.

More completely, the setting is as follows: the device comprises a wheel frame, a traveling wheel and a driving device, wherein the traveling wheel is arranged on the wheel frame, the driving device is used for driving the traveling wheel to rotate, and the driving device is a direct current motor. In the scheme, the driving device is used for driving the traveling wheels to roll so as to realize the traveling function of the traveling device wheel train; the model selection of the driving device is good in speed regulation performance, simple in structure and stable in performance, the driving device of the joint driving motor is matched, and the running device can run independently under the lightweight design by installing a lithium battery, a control module and the like on the rack. When the joint driving motor is used specifically, the joint driving motor can be a servo motor.

As a specific application of the walking system, the scheme also discloses a walking device which comprises a rack and a supporting leg arranged on the rack, wherein the supporting leg is any one of the supporting legs;

the air cylinder is rotatably connected to the rack through a connecting piece, and a rotating shaft on the connecting piece is used as a rotating shaft of the air cylinder relative to the rack;

the driving device is fixedly arranged on the frame. As described above, the present running apparatus is based on the running system, and the above running system can make the present running apparatus have: the height of the frame can be matched according to specific road conditions, so that the walking speed and the stability are well matched; the supporting height of the rack can be obtained with high precision and high efficiency; the shock resistance, the bounce capability and the bearing capacity are good; meanwhile, the walking device has the characteristics of simple structure, convenience in lightweight design of the walking device and the like.

As a further technical proposal of the walking device:

more perfect, for making running gear possess the polypody function of walking, each foot all has great bearing capacity simultaneously, can provide elastic support for the frame, can provide elastic buffer for the frame, sets up to: the number of the supporting legs is multiple; each supporting leg is provided with a travelling wheel; each landing leg is matched with a cylinder.

As a specific rack arrangement form, the device is provided with: the rack comprises a hollow bearing platform, the bearing platform comprises a top plate and a bottom plate, and a hollow space on the bearing platform is enclosed by the top plate and the bottom plate;

the energy storage device is used for providing power sources for the air cylinder and the driving device. This scheme aims at providing one kind and has many installation positions in order to be used for installing running gear part and the frame scheme of task part itself to on light in weight's basis itself, can utilize roof and bottom plate, provide the protection for the part on the corresponding installation position.

The scheme also discloses a walking method for the walking device, which is used as the walking method of the walking device;

the air cylinder and the supporting legs are used as supporting parts of the rack, and the height of the rack is lifted and bounced through the expansion of the air cylinder and the connecting rod mechanism;

wherein, the mode of providing the support to the frame does: in the whole or partial process of the walking device, the state constraint of the driving device on the link mechanism is removed, so that the link mechanism can freely stretch and retract, and the support of the rack is realized through the air cylinder;

when the frame is lifted and lowered: removing the constraint of the cylinder on the extension and retraction of the link mechanism, and driving the link mechanism to extend and retract by using the driving device to complete the height adjustment of the rack;

when the machine frame is lifted and jumped, the connecting rod mechanism is used for compressing the gas in the cylinder to realize the force storage of the cylinder. As described above, the walking method is the walking method of the walking device including the walking system, and the method is favorable for realizing: the walking device can be matched with the proper height of the frame according to specific road conditions so as to well fit the walking speed and the stability; the supporting height of the rack can be obtained with high precision and high efficiency; the shock resistance, the bounce capability and the bearing capacity are good; meanwhile, the walking device has the characteristics of simple structure, convenience in lightweight design of the walking device and the like.

As a further technical proposal of the walking method:

the mode for supporting the rack comprises a first mode and a second mode;

the first mode is as follows: the frame is supported only through the air cylinder;

the second mode is as follows: the frame is supported by the cylinder and the connecting rod mechanism together;

the first mode and the second mode can be switched randomly;

when the machine frame is lifted up and jumped, the driving and rotating device and the air cylinder provide the lifting force for the machine frame together: after the force is accumulated on the cylinder, the driving device provides extended power for the connecting rod mechanism and the air source provides extended power for the cylinder;

and in the process of completing the jumping of the rack to the landing, removing the telescopic constraint of the driving and rotating device on the connecting rod mechanism, and obtaining the state of realizing the landing support of the rack only by using the air cylinder. The scheme is a scheme that the support mode of the rack can be adjusted according to specific use requirements, and if the requirement on the support height of the rack is high, the support of the rack can be completed by using a second mode; if the support height of the machine frame only needs to meet the passing performance, the support can be completed in a mode I. The user or the walking device can select a proper frame supporting mode according to specific use requirements. In the mode of take-off, the early-stage take-off driving device is used for storing energy for the air cylinder through the connecting rod mechanism, and the drive device and the air cylinder simultaneously do work for the frame in the take-off process, so that the take-off capacity of the walking device can be effectively improved. The landing support mode is adopted, the air cylinder is used for absorbing shock of the traveling device, and the shock resistance of the traveling device can be effectively improved.

The invention has the following beneficial effects:

the scheme provides a walking device, a walking system for the walking device and a walking method for the walking device.

In the concrete design of running gear, the current demand that high lift is used for adapting to the frame: when the ground is flat, the gravity center of the walking device is lowered through the contraction of the connecting rod mechanism, so that the walking speed is increased; when walking on the hollow ground, the accessible link mechanism extends for the frame is supported by the high-order, with the mode of sacrificing the focus height, avoids frame contact ground, promotes running gear's throughput. The jumping is used for the walking device to cross obstacles, so that the walking device has all-terrain adaptability. When the rack is supported, the constraint of the driving and rotating device on the extension and retraction of the connecting rod mechanism is removed according to needs, and the rack is supported only by using the air cylinder, so that the characteristic of compressible air in the air cylinder body can be utilized, the support structure of the rack can absorb impact, and the damping function is realized to adapt to bumpy road conditions; meanwhile, the mode that only the air cylinder supports the frame can be used for landing buffering. Therefore, the shock absorption can be realized, and meanwhile, as for a double-wheel-foot walking mode (only two walking wheels are arranged on the walking device or only two walking wheels are adopted to form a wheel train under certain working conditions), the requirement on the balance capacity of balance parts carried on the walking device can be reduced. Simultaneously, above scheme still is particularly useful for running gear self subtracts heavy design demand: in the prior art, if foot-type bouncing is realized through a motor, the inertia of the motor itself needs to be considered, and if a low-inertia motor is generally adopted, the bouncing is realized in a manner that: the scheme also has the characteristics of relatively complex structure and relatively complex control strategy. And this scheme of adoption, cylinder itself can regard as energy storage component and as the power component when bouncing for single part can the multipurpose on this traveling system, is convenient for realize running gear subtracts heavy design and the design of simple structure. By adopting the scheme, after the power storage is completed, the driving device and the air cylinder can further apply work for the connecting rod mechanism, and the capability of the walking device for jumping obstacles is improved through the combined action of multiple parts. Adopt this scheme simultaneously, because the cylinder generally has the characteristics of big inertia, low response, be different from the device of rotating that drives that generally is the motor, have bigger bearing capacity under the prerequisite that the volume is littleer, weight is lighter, and the model selection of motor in the field generally is the motor of low inertia, high response, so this scheme can adopt when carrying out frame height control: remove the cylinder to link mechanism's restraint (remove the locking of locking piece to the cylinder and remove the restraint of gas circuit system to cylinder piston motion), only utilize the device work of driving commentaries on classics, realize frame height high accuracy and high efficiency and adjust, then reuse the cylinder to carry out auxiliary stay to the frame or convert the mode that only the cylinder supported the frame into, so not only can promote frame height control accuracy, can guarantee running gear bearing capacity and reliability at whole task in-process simultaneously.

The walking device is based on the walking system, so that the walking device has the following advantages: the height of the frame can be matched according to specific road conditions, so that the walking speed and the stability are well matched; the supporting height of the rack can be obtained with high precision and high efficiency; the shock resistance, the bounce capability and the bearing capacity are good; meanwhile, the walking device has the characteristics of simple structure, convenience in lightweight design of the walking device and the like.

The walking method is the walking method of the walking device comprising the walking system, and the method is favorable for realizing: the walking device can be matched with the proper height of the frame according to specific road conditions so as to well fit the walking speed and the stability; the supporting height of the rack can be obtained with high precision and high efficiency; the shock resistance, the bounce capability and the bearing capacity are good; meanwhile, the walking device has the characteristics of simple structure, convenience in lightweight design of the walking device and the like.

Drawings

Fig. 1 is a schematic structural view of a specific embodiment of a walking device according to the present invention, which is a schematic perspective structural view of the walking device;

fig. 2 is a schematic structural view of an embodiment of the walking device according to the present invention, which is an exploded view of the structure shown in fig. 1;

fig. 3 is a schematic structural view of an embodiment of the traveling device according to the present invention, which is a schematic structural view of the frame after the frame is supported in the high position after the cylinders and the link mechanisms in the structure shown in fig. 1 are opened.

The reference numbers in the drawings are respectively: 1. the device comprises a frame, 2, a cylinder, 3, a driving device, 4, a connecting rod mechanism, 41, a first connecting rod, 42, a second connecting rod, 43, a third connecting rod, 5, a traveling wheel, 6, a driving device, 7, a wheel carrier, 8 and a connecting piece.

Detailed Description

The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples:

example 1:

as shown in fig. 1 to 3, the walking system for a walking device comprises a support leg, wherein the support leg comprises a link mechanism 4 and a driving device 3 for driving the link mechanism 4 to extend and retract;

the link mechanism 4 is provided with a wheel carrier 7 for mounting the travelling wheel 5; the device also comprises a cylinder 2, wherein one of a cylinder body part and a piston rod part of the cylinder 2 is fixedly connected with a wheel carrier 7, and the other is fixedly provided with a connecting piece 8;

a rotating shaft is arranged on the connecting piece 8, and the air cylinder 2 can rotate around the rotating shaft;

the rotating shaft on the connecting piece 8 is parallel to the axis of the rotating shaft on the connecting rod mechanism 4;

and a locking piece is further arranged on the connecting piece 8 and used for realizing the rotation locking of the cylinder 2 relative to the rotating shaft.

In the prior art, as described in the technical solution provided in the patent application with application number CN202010806731.0, in order to solve the obstacle crossing capability of the wheel-type mobile device and improve the stability during the moving process, the link mechanism 4 with the telescopic function is adopted, and under the action of the telescopic driving member, the height adjustment and the take-off and obstacle crossing of the frame 1 are realized. Meanwhile, in the scheme, a form that the telescopic driving piece adopts a motor is disclosed. In the field related to the scheme, as the lifting form or the movement mode of the telescopic legs is adopted, for example, the driving scheme provided by the technical scheme with the application number of CN201810595071.9 and the like is also mostly adopted to finish walking and lifting driving by using a motor.

Simultaneously, consider current motor driving capability, concrete structural design etc. the flexible driving piece that current leg running gear adopted generally is equipped with elastic mechanism to match mobile device's bearing capacity and self lightweight design: in particular to the technical proposal provided by the invention patent applications with application numbers of CN201610206266.0, CN202010751681.0 and the like.

This scheme is to current design, provides one kind not only can realize walking speed and walking stability concurrently, simple structure, bearing capacity are strong simultaneously, the fast technical scheme of lift adjustment response speed. This scheme is when specifically using, as running gear's traveling system, and specifically install and be: the cylinder 2 is rotatably connected to the frame 1 of the walking device through a connecting piece 8, and a rotating shaft on the connecting piece 8 is used as a rotating shaft of the cylinder 2 rotating relative to the frame 1; the driving and rotating device 3 is fixedly arranged on the frame 1, and the wheel carrier 7 is provided with a traveling wheel 5 connected with a driving device 6. Like this, the device 3 that rotates can realize link mechanism 4's length adjustment through the corresponding connecting rod rotation on the drive link mechanism 4, above link mechanism 4 length change in-process, because cylinder 2 is connected between wheel carrier 7 and frame 1, so the pivot that sets up on the connecting piece 8 aims at making cylinder 2 rotate this moment and can be in step with link mechanism 4 length change. The locking member is also provided so that the rotation of the cylinder 2 relative to the frame 1 can be locked, thus allowing the cylinder 2 itself to have the ability to support the frame 1.

The structural foundation of the walking system provided above can realize: the cylinder 2 and the supporting legs are used as supporting parts of the rack 1, and the height of the rack 1 is lifted and bounced through the expansion of the cylinder 2 and the connecting rod mechanism 4; wherein, the mode of providing support to frame 1 does: in the whole or partial process of the walking device, the state constraint of the driving device 3 on the link mechanism 4 is removed, so that the link mechanism 4 can freely stretch and retract, and the support of the rack 1 is realized through the cylinder 2; when the frame 1 is lifted and lowered: removing the constraint of the cylinder 2 on the extension and contraction of the link mechanism 4, and driving the link mechanism 4 to extend and contract by using the driving device 3 to complete the height adjustment of the rack 1; when the frame 1 is bounced, the connecting rod mechanism 4 is used for compressing the gas in the cylinder 2 to realize the force storage of the cylinder 2.

The above height elevation is used to adapt to the traffic demand of the rack 1: when the ground is flat, the connecting rod mechanism 4 can be retracted, so that the gravity center of the walking device is lowered, and the walking speed is increased; when the walking device walks on a hollow ground, the machine frame 1 can be supported at a high position by extending the connecting rod mechanism 4, so that the machine frame 1 is prevented from contacting the ground in a mode of sacrificing the height of the center of gravity, and the traffic capacity of the walking device is improved. The jumping is used for the walking device to cross obstacles, so that the walking device has all-terrain adaptability. When the rack 1 is supported, the constraint of the driving device 3 on the extension and contraction of the link mechanism 4 is removed as required, and the rack 1 is supported only by the air cylinder 2, so that the characteristic of compressible air in the air cylinder 2 can be utilized, the support structure of the rack 1 can absorb impact, and the damping function is realized to adapt to bumpy road conditions; while the manner in which only the cylinder 2 supports the frame 1 may also be used for floor cushioning. Therefore, the shock absorption can be realized, and meanwhile, as for a double-wheel-foot walking mode (only two walking wheels 5 are arranged on the walking device or only two walking wheels 5 are adopted to form a wheel train under certain working conditions), the requirement on the balance capacity of balance parts carried on the walking device can be reduced. Simultaneously, above scheme still is particularly useful for running gear self subtracts heavy design demand: in the prior art, if foot-type bouncing is realized through a motor, the inertia of the motor itself needs to be considered, and if a low-inertia motor is generally adopted, the bouncing is realized in a manner that: the scheme also has the characteristics of relatively complex structure and relatively complex control strategy. And this scheme of adoption, cylinder 2 itself can regard as energy storage component and as the power component when bouncing for single part can the multipurpose on this traveling system, is convenient for realize running gear subtracts heavy design and the design of simple structure. By adopting the scheme, after the power storage is completed, the driving device 3 and the cylinder 2 can further apply work to the connecting rod mechanism 4, and the capability of the walking device for jumping obstacles is improved under the combined action of multiple parts. Adopt this scheme simultaneously, because cylinder 2 generally has the characteristics of big inertia, low response, is different from the drive device 3 that generally is the motor, has bigger bearing capacity under the prerequisite that the volume is littleer, weight is lighter, and the type selection of motor in this field is the motor of low inertia, high response generally, so this scheme can adopt when carrying out 1 altitude mixture control of frame: remove the restraint of cylinder 2 to link mechanism 4 (remove the locking of locking piece to cylinder 2 and remove the restraint of gas circuit system to cylinder 2 piston motion), only utilize and drive the work of commentaries on classics device 3, realize the high precision of frame 1 and high efficiency and adjust, then reuse cylinder 2 to carry out the auxiliary stay to frame 1 or convert the mode that only cylinder 2 supported frame 1 into, so not only can promote the high control accuracy of frame 1, can guarantee running gear bearing capacity and reliability at whole task in-process simultaneously.

For the design of the connecting piece 8, in a specific application, the connecting piece 8 may include a first hoop body for fixedly connecting the rack 1 and a second hoop body for fixedly connecting the cylinder 2, and the first hoop body and the second hoop body are connected through a rotating shaft. The corresponding locking piece is just required to adopt a rotating shaft locking device. Also, as a person skilled in the art, the above wheel carrier 7 may be the link mechanism 4 itself, or may be a separate component mounted on the link mechanism 4.

Example 2:

this example was further optimized and refined on the basis of example 1:

as a specific implementation manner of the link mechanism 4, it is configured as follows: the link mechanism 4 comprises a third link 43, a first link 41 and a second link 42, wherein the first link 41 and the second link 42 are both hinged to different positions of the third link 43 in the length direction through a rotating shaft;

the driving device 3 is a joint driving motor connected to the first connecting rod 41 or the second connecting rod 42. When the link mechanism 4 is applied to a traveling device, the joint driving motor is used as a low-inertia high-response electric driving power source and is mounted on the frame 1, for example, when the driving device 3 is connected with the first link 41, the second link 42 is hinged with the frame 1, so that the frame 1, the first link 41, the second link 42 and the third link 43 form the four-link mechanism 4, and when the driving device 3 drives the first link 41 to rotate, for example, the third link 43 is used as the wheel carrier 7 or the wheel carrier 7 is mounted on the third link 43, the height adjustment of the traveling wheel 5 on the wheel carrier 7 relative to the frame 1 can be realized. The connecting rod mechanism 4 is simple in form and structure, reliable in performance, free of other auxiliary structures and beneficial to lightweight design of the walking device.

Example 3:

this example was further optimized and refined on the basis of example 1:

more complete, for the load that alleviates running gear when independently operating, set up as: the gas source device is used for providing a compressed gas source for the cylinder 2, and the gas source device is a compressed gas cylinder. When the pneumatic system is used specifically, the compressed gas cylinder provides compressed gas for the cylinder 2 through the gas circuit and the corresponding gas circuit element, so that the pneumatic system which is carried on the walking device and comprises the gas source device and the cylinder 2 has the characteristics of light weight and simple structure.

Example 4:

this example was further optimized and refined on the basis of example 1:

as a technical scheme that the bidirectional controllability is high, a cylinder body is connected with a rack 1 through a connecting piece 8, and a piston rod is connected with a wheel carrier 7, the technical scheme is as follows: the cylinder 2 is a single-cylinder double-acting cylinder 2, the piston rod part of the cylinder 2 is fixedly connected with the wheel carrier 7, and the connecting piece 8 is connected to the cylinder body part of the cylinder 2. By adopting the scheme, the arrangement of the walking wheels 5, the driving device 6, the connecting rod mechanism 4 and the like is conveniently finished by utilizing the characteristic that the outer diameter of the piston rod part is smaller than that of the cylinder body part.

Example 5:

this example was further optimized and refined on the basis of example 1:

more completely, the setting is as follows: the device also comprises a walking wheel 5 arranged on the wheel carrier 7 and a driving device 6 used for driving the walking wheel 5 to rotate, wherein the driving device 6 is a direct current motor. In the scheme, the driving device 6 is used for driving the traveling wheels 5 to roll so as to realize the traveling function of a traveling device gear train; the type selection of the driving device 6 is good in speed regulation performance, simple in structure and stable in performance, the driving device 3 of the joint driving motor is matched, and the running device can run independently under the light weight design by installing a lithium battery, a control module and the like on the rack 1. When the joint driving motor is used specifically, the joint driving motor can be a servo motor.

Example 6:

as a specific application of the above walking system, the present embodiment provides a walking device, which includes a frame 1, and further includes a leg mounted on the frame 1, where the leg is the leg described in any one of the above embodiments;

the cylinder 2 is rotatably connected to the frame 1 through a connecting piece 8, and a rotating shaft on the connecting piece 8 is used as a rotating shaft of the cylinder 2 rotating relative to the frame 1;

the driving device 3 is fixedly arranged on the frame 1. As described above, the present running apparatus is based on the running system, and the above running system can make the present running apparatus have: the height of the frame 1 can be matched according to specific road conditions, so that the walking speed and the stability are well matched; the supporting height of the frame 1 can be obtained with high precision and high efficiency; the shock resistance, the bounce capability and the bearing capacity are good; meanwhile, the walking device has the characteristics of simple structure, convenience in lightweight design of the walking device and the like.

Example 7:

this example was further optimized and refined on the basis of example 6:

more perfect, for making running gear possess the polypody function of walking, each foot all has great bearing capacity simultaneously, can provide elastic support for frame 1, can provide elastic buffer for frame 1, sets up to: the number of the supporting legs is multiple; each supporting leg is provided with a travelling wheel 5; each support leg is matched with a cylinder 2.

Example 8:

this example was further optimized and refined on the basis of example 6:

as a specific arrangement form of the rack 1, the following arrangement forms: the rack 1 comprises a hollow bearing platform, the bearing platform comprises a top plate and a bottom plate, and a hollow space on the bearing platform is enclosed by the top plate and the bottom plate;

the energy storage device is used for providing power sources for the air cylinder 2 and the driving device 3. The scheme aims to provide the scheme of the frame 1 which is provided with a plurality of mounting stations and used for mounting the self parts and the task parts of the walking device, so that on the basis of light weight, a top plate and a bottom plate can be utilized to provide protection for the parts on the corresponding mounting stations.

Example 9:

the present embodiment provides a walking method for a walking apparatus as the walking method of the walking apparatus described above, on the basis of embodiment 6;

the cylinder 2 and the supporting legs are used as supporting parts of the rack 1, and the height of the rack 1 is lifted and bounced through the expansion of the cylinder 2 and the connecting rod mechanism 4;

wherein, the mode of providing support to frame 1 does: in the whole or partial process of the walking device, the state constraint of the driving device 3 on the link mechanism 4 is removed, so that the link mechanism 4 can freely stretch and retract, and the support of the rack 1 is realized through the cylinder 2;

when the frame 1 is lifted and lowered: removing the constraint of the cylinder 2 on the extension and contraction of the link mechanism 4, and driving the link mechanism 4 to extend and contract by using the driving device 3 to complete the height adjustment of the rack 1;

when the frame 1 is bounced, the connecting rod mechanism 4 is used for compressing the gas in the cylinder 2 to realize the force storage of the cylinder 2. As described above, the walking method is the walking method of the walking device including the walking system, and the method is favorable for realizing: the walking device can be matched with the proper height of the frame 1 according to specific road conditions so as to well fit the walking speed and the stability; the supporting height of the frame 1 can be obtained with high precision and high efficiency; the shock resistance, the bounce capability and the bearing capacity are good; meanwhile, the walking device has the characteristics of simple structure, convenience in lightweight design of the walking device and the like.

Example 10:

this example was further optimized and refined on the basis of example 9:

the mode for supporting the frame 1 comprises a first mode and a second mode;

the first mode is as follows: the support of the frame 1 is realized only by the cylinder 2;

the second mode is as follows: the frame 1 is supported by the cylinder 2 and the connecting rod mechanism 4 together;

the first mode and the second mode can be switched randomly;

when the frame 1 is realized to take off the jump, the driving device 3 and the cylinder 2 provide the jump-off force for the frame 1 together: after the force is accumulated on the cylinder 2, the driving device 3 provides extended power for the connecting rod mechanism 4 and provides extended power for the cylinder 2 through an air source;

in the process of completing the jumping of the frame 1 to the landing, the telescopic constraint of the driving and rotating device 3 on the connecting rod mechanism 4 is removed, and the state of landing and supporting the frame 1 by only utilizing the cylinder 2 is obtained. The scheme is that the supporting mode of the rack 1 can be adjusted according to specific use requirements, and if the requirement on the supporting height of the rack 1 is high, the rack 1 can be supported by a second mode; if the supporting height of the frame 1 only needs to meet the passing performance, the supporting can be completed in a mode one. The user or the walking device can select a proper supporting mode of the frame 1 according to specific use requirements. In the above take-off mode, the early-stage take-off driving and rotating device 3 is used for storing energy for the cylinder 2 through the connecting rod mechanism 4, and the drive rotating device 3 and the cylinder 2 simultaneously do work for the frame 1 in the take-off process, so that the take-off capacity of the walking device can be effectively improved. The landing support mode is adopted, the cylinder 2 is used for absorbing shock of the traveling device, and the shock resistance of the traveling device can be effectively improved.

The foregoing is a more detailed description of the present invention in connection with specific preferred embodiments thereof, and it is not intended that the specific embodiments of the present invention be limited to these descriptions. For those skilled in the art to which the invention pertains, other embodiments that do not depart from the gist of the invention are intended to be within the scope of the invention.