1. The utility model provides an automobile-used jack-up tailboard rack analogue test device which characterized in that: comprises a test bench (1), a limiting device (2) of a tail board closing state and a measuring device (3);

the test bench (1) comprises a frame (1-1) and base sliding chutes (1-2) which are connected with two opposite sides of the frame (1-1) and arranged side by side;

the limiting device (2) comprises a supporting upright post (2-1), an adjusting rod (2-2) and a limiter (2-4) when the tail board is closed; the lower end of the support upright post (2-1) is fixed on the frame (1-1), and the upper end of the support upright post is connected with the adjusting rod (2-2); the limiting stopper (2-4) is arranged at the end of the adjusting rod (2-2); a sliding groove is formed in the middle of the adjusting rod (2-2), a threaded hole is formed in the upper end of the supporting upright post (2-1), the upper end of the supporting upright post (2-1) is arranged in the sliding groove of the adjusting rod (2-2), and the adjusting rod (2-2) is fixedly connected with the supporting upright post (2-1) through a fastener (2-3);

the measuring device (3) comprises a measuring adjusting rod, a measuring upright post (3-6) and a laser displacement sensor (3-3); one end of the measuring adjusting rod is sleeved at the upper end of the measuring upright post (3-6), and the other end of the measuring adjusting rod is provided with the laser displacement sensor (3-3); the lower end of the measuring upright post (3-6) is provided with a base (3-7), and the base (3-7) is connected with the base sliding groove (1-2); the base sliding grooves (1-2) are dovetail grooves, the bases (3-7) are dovetail bosses, and the bases (3-7) are fixed on the base sliding grooves (1-2) through base fixing bolts (3-8).

2. The crane tail plate rack simulation test device for the vehicle according to claim 1, wherein: the limiters (2-4) are adjustable ball swing rod type stroke limiters.

3. The truck boom gate bench simulation test apparatus according to claim 1 or 2, wherein: the measuring and adjusting rod comprises a lower measuring and adjusting rod (3-1) and an upper measuring and adjusting rod (3-4); the middle parts of the lower measuring adjusting rod (3-1) and the upper measuring adjusting rod (3-4) are respectively provided with a sliding groove, and the two measuring adjusting rods are vertically overlapped and connected through a locking bolt (3-2) and a locking nut (3-5) in the sliding grooves; one end of the lower measuring and adjusting rod (3-1) is sleeved on the measuring upright post (3-6), and the laser displacement sensor (3-3) is installed at the tail end of the upper measuring and adjusting rod (3-4).

Background

The automobile-used jack-up tailboard is installed on the vehicle for the special lifting device of quick loading and unloading goods can effectively promote goods handling efficiency, practices thrift manpower resources, promotes transportation organizational efficiency, has positive meaning to promoting the high quality development of freight industry transformation upgrading, promoting the logistics industry cost reduction increase. The department of transportation, the department of industry and informatization, the department of public security and the general administration of market supervision in China release documents, and the tailboards required to be produced and sold should meet the standard requirements of QC/T699-. The detection items comprise reliability tests (no-load operation is 3000 times, and load operation is 30000 times), position variation tests before and after loading, load standing variation tests and the like. Because the vehicle-mounted storage battery can not continuously supply power to ensure continuous operation, and can not finish tens of thousands of tests by manual operation, the vehicle-mounted storage battery can only use bench simulation test equipment and use a direct-current power supply to supply power, and the tests can be finished by the automatic operation of the PLC control tail board. At present, only a few inspection institutions in China have qualification, no relevant test equipment is sold in the market, the existing test equipment is independently developed by detection institutions, and the test equipment generally has some defects, such as: 1. the tail board in the actual loading state is positioned by the end faces of two sides of the tail part of the carriage when in the closing position (vertical state), the horizontal distance L between the installation and fixing position of the tail board and the end faces of two sides of the tail part of the carriage 6 is different according to different vehicle types (see figure 5), the existing test equipment lacks a limiting device capable of adjusting the horizontal distance to replace the two side ends of the tail part of the carriage to position the tail board, the tail board is controlled to run by depending on time setting in the no-load running test process, the time of one period of the tail board running is fixed, the time of the tail board staying in the closing position (vertical state) is also fixed, the tail board can incline when the tail board runs to the closing position in the set time due to the influence of factors such as friction resistance, assembly clearance and the like, the tail board deviates from a vertical line, the inclination angle of the tail board is gradually increased due to continuous running, the test cannot be automatically completed. 2. Position variation is experimental around the loading, the load volume of standing test need measure the altitude variation of four angles of tailboard platform, can not fix measuring tool's position when using current instruments such as tape measure, ruler to measure, can not guarantee twice measuring point at same point, can not measure the position at four angles simultaneously, has the measurement degree of difficulty big, the inaccurate problem of data.

Disclosure of Invention

The invention aims to solve the technical problem of providing a vehicle lifting tail plate rack simulation test device, which can solve the problems that the existing vehicle lifting tail plate rack simulation test device can not fully automatically complete 3000 times of no-load operation tests, can not adapt to different types of tail plate tests and has inaccurate test measurement data.

In order to solve the problems, the technical scheme of the invention is as follows: the vehicle hoisting tail plate rack simulation test device comprises a test rack fixed on the ground, a tail plate closing state limiting device and a measuring device);

the test bed comprises a frame and base sliding grooves which are connected with two opposite sides of the bottom surface of the frame and are arranged side by side;

the limiting device comprises a supporting upright post, an adjusting rod and a limiter when the tail plate is closed; the lower end of the supporting upright post is fixed on the frame, and the upper end of the supporting upright post is connected with the adjusting rod; the limiting stopper is arranged at the end of the adjusting rod; the middle part of the adjusting rod is provided with a sliding chute, the upper end of the supporting upright post is provided with a threaded hole, the upper end of the supporting upright post is arranged in the sliding chute of the adjusting rod, and the adjusting rod and the supporting upright post are fixedly connected by a fastener;

the measuring device comprises a measuring adjusting rod, a measuring upright post and a laser displacement sensor; one end of the measuring adjusting rod is sleeved at the upper end of the measuring upright post, and the other end of the measuring adjusting rod is provided with the laser displacement sensor; the lower end of the measuring upright post is provided with a base which is connected with the base sliding groove; the base sliding groove is a dovetail groove, the base is a dovetail boss, and the base is fixed on the base sliding groove through a base fixing bolt.

In the above technical solution, a more specific solution is: the limiter is an adjustable ball swing rod type stroke limiter.

Further: the measuring and adjusting rod comprises a lower measuring and adjusting rod and an upper measuring and adjusting rod; the middle parts of the lower measuring adjusting rod and the upper measuring adjusting rod are respectively provided with a sliding chute, and the two measuring adjusting rods are connected in an up-and-down overlapping mode through a locking bolt and a locking nut in the sliding chutes; one end of the lower measuring adjusting rod is sleeved on the measuring upright post, and the laser displacement sensor is installed at the tail end of the upper measuring adjusting rod.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:

1. the prior test equipment controls the tail board to run by means of time setting in the no-load running test process, the time of one cycle of the tail board running is fixed, the time of staying in the closed position (vertical state) after running is also fixed, during continuous operation, due to the influence of factors such as friction resistance, assembly clearance and the like, the tail board can incline and deviate from a vertical line when the tail board operates to a closed position within a set time, the inclination angle of the tail board is gradually increased due to continuous operation, the whole automatic operation program is disordered and the test cannot be automatically completed, the invention is provided with the no-load operation limiting device, can accurately position the tail board, ensures that the tail board always keeps a vertical state when running to a closed position, ensures that the no-load operation test can be fully automatically completed under the control of a program, and the device has the length adjustment function, can also adjust stop device's front and back position according to different motorcycle types.

2. The position variation test before and after the loading of the existing test mode, the load standing variation test need to measure the height variation of four corners of the tail plate platform, the position of a measuring tool cannot be fixed when the existing tools such as a tape measure and a ruler are used for measurement, the point of twice measurement cannot be ensured to be at the same point, the positions of four corners cannot be measured simultaneously, and the problems of high measurement difficulty and inaccurate data exist.

The laser displacement sensor is arranged at the front end of the measuring arm, so that the height variation of the same point can be accurately measured, and the height variation of four corners can be measured simultaneously.

3. The invention solves the practical problems that the existing test equipment can not fully automatically complete 3000 times of no-load operation tests, can not adapt to different types of tail plate tests, and can not accurately measure test parameters such as position variation tests before and after loading, load standing variation and the like.

Drawings

FIG. 1 is a schematic view of the structure of the present invention in a load test;

FIG. 2 is a schematic structural view of the present invention during no-load test;

FIG. 3 is a schematic view of the stop assembly of the present invention with the tailgate closed;

FIG. 4 is a schematic view of the structure of the adjusting lever 2-2 of the present invention;

FIG. 5 is a schematic view showing the horizontal distance L between the mounting position of the tailgate and the end surfaces of the rear end of the vehicle body 6 according to the present invention;

FIG. 6 is a schematic view of the structure of the measuring device of the present invention;

FIG. 7 is a schematic view of the connection structure of the measuring device and the sliding groove of the base.

The reference numbers in the figures denote:

1. a test bed; 1-1, a frame; 1-2, a base chute; 2. a stop device for closing the tail plate; 2-1, supporting the upright post; 2-2, adjusting a rod; 2-3, fastening pieces; 3. a measuring device; 3-1, lower measuring adjusting rod; 3-2, locking bolts; 3-3, a laser displacement sensor; 3-4, an upper measuring adjusting rod; 3-5, locking a nut; 3-6, measuring the upright column; 3-7, a base slide block; 3-8, a base; 3-9, fixing bolts; 4. A weight; 5. a lifting tail plate for a vehicle. 6. A wagon box.

Detailed Description

The invention is further illustrated with reference to the following figures and examples:

the vehicle lifting tail plate rack simulation test device shown in fig. 1, 2 and 3 comprises a test rack 1, a limiting device 2 when a tail plate is closed and a measuring device 3.

The test bed 1 comprises a cuboid frame 1-1 and base sliding grooves 1-2 which are arranged in parallel on two opposite sides of the bottom surface of the connecting frame 1-1, wherein the base sliding grooves 1-2 are dovetail grooves; the test bed 1 is fixed on the ground by expansion bolts; during testing, a vehicle lifting tail plate 5 with a hydraulic station, a direct current motor and a hydraulic piston to be tested is arranged on the frame 1-1; in the load test, a load, i.e., a weight 4, is added to the truck tail boom 5.

The limiting device 2 comprises two supporting upright posts 2-1, an adjusting rod 2-2, a fastening piece 2-3 and a limiter 2-4 when the tail plate is closed; the lower ends of two parallel supporting upright columns 2-1 are fixed in the middle of a frame 1-1 of a test bed 1 in a welding mode, and the upper ends of the supporting upright columns 2-1 are provided with threaded holes; as shown in fig. 4, a sliding groove is formed in the middle of an adjusting rod 2-2, the upper ends of two supporting upright columns 2-1 are arranged in the sliding groove of the adjusting rod 2-2, the adjusting rod 2-2 and the base sliding groove 1-2 swing in the same direction, after the adjusting rod 2-2 is adjusted to a position along the sliding groove in the left-right direction, the adjusting rod 2-2 and the supporting upright columns 2-1 are fixedly connected through fasteners 2-3, in the embodiment, the fasteners 2-3 are locking bolts and washers; the left end of the adjusting rod 2-2 is provided with a limiter 2-4.

As shown in fig. 6, the measuring device 3 comprises two measuring adjusting rods, namely a lower measuring adjusting rod 3-1 and an upper measuring adjusting rod 3-4, a locking bolt 3-2, a laser displacement sensor 3-3, a locking nut 3-5, a measuring upright post 3-6, a base 3-7, a base fixing bolt 3-8 and a locking bolt 3-9; the lower end of the measuring upright post 3-6 is fixed on the base 3-7 in a welding mode, the upper end is sleeved with the lower measuring adjusting rod 3-1, and the lower measuring adjusting rod 3-1 sleeved on the measuring upright post 3-6 is fixed on the measuring upright post 3-6 by a locking bolt 3-9 after the position of the lower measuring adjusting rod 3-1 is adjusted; the middle parts of the lower measuring and adjusting rod 3-1 and the upper measuring and adjusting rod 3-4 are respectively provided with a sliding chute, and the two measuring and adjusting rods are connected in an up-and-down overlapping way through a locking bolt 3-2 and a locking nut 3-5 in the sliding chutes; the laser displacement sensor 3-3 is arranged at the tail end of the upper measuring and adjusting rod 3-4; as shown in figure 7, the base 3-7 is a dovetail boss and is connected with a dovetail groove of a base sliding groove 1-2 of the test bed 1, and the positions of the measuring adjusting rod and the measuring upright post 3-6 are adjusted and then fixed by a base fixing bolt 3-8.

Automobile-used jack-up tailboard rack analogue test device use:

preparation before testing:

1. the truck boom 5 is mounted on the frame 1-1.

2. The bases 3-7 of the 4 measuring upright posts 3-6 are respectively arranged in dovetail grooves of base chutes 1-2 of the test bed, the left base chute 1-2 and the right base chute 1-2 are respectively provided with two measuring upright posts 3-6, the base fixing bolts 3-8 are screwed after the base fixing bolts are adjusted to proper positions according to the model of the hoisting tail plate to be tested, and the measuring upright posts 3-6 are fixed in the base chutes 1-2.

3. The measuring adjusting rod 3-1 is sleeved into the measuring upright post 3-6, the height is adjusted to be proper, the locking bolt 3-9 is tightened, and the measuring upright post 3-6 is fixed on the upper portion of the measuring upright post 3-6.

4. The measuring and adjusting rod 3-4 and the measuring and adjusting rod 3-1 are connected by a locking bolt 3-2 and a locking nut 3-5 and are fixedly connected into a whole measuring and adjusting rod, and the end of the measuring and adjusting rod 3-4 is provided with a laser displacement sensor 3-3.

5. The adjusting rod 2-2 and the upright post 2-1 are connected by a locking bolt and a gasket; the position limiter 2-4 is arranged on the interface at the front end of the adjusting rod 2-2.

During no-load running test:

1. and (3) loosening the locking bolts 3-9 to rotate the measurement adjusting rod 3-1 and the measurement adjusting rod 3-4 of the measuring device 3 outwards around the measurement upright post 3-6 to a position where the measurement adjusting rod does not interfere with the empty carrying of the tail plate 5, tightening the locking bolts 3-9, repeating the operation, and respectively rotating the measurement adjusting rods 3-1 and 3-4 of the 4 measuring devices 3 outwards.

2. The tail plate is turned upwards to a closed position (vertical state), the locking bolt 2-3 is unscrewed to adjust the front-back distance of the adjusting rod, so that the contact of the stopper 2-4 is just contacted with the tail plate 5, the locking bolt 2-3 is screwed down to complete the installation and adjustment of the limiting device when the tail plate 5 is closed, and the tail plate 5 can automatically complete the test of 3000 times of no-load operation under the control of a PLC.

During tests such as load operation, position variation before and after loading, load standing variation and the like:

1. according to different models, different loads, namely weights 4 with different weights, are added to the lifting tail plate 5 for the vehicle.

2. And (3) loosening the base fixing bolts 3-9, sliding the measuring device 3 to a proper measuring position in the dovetail groove, and then screwing the base fixing bolts 3-9 to fix the base.

3. And (3) loosening the locking bolt 3-9, and rotating and adjusting the measuring adjusting rod 3-1 up and down to a proper position convenient for measurement.

4. And (3) loosening the locking bolt 3-2 and the locking nut 3-5, adjusting the lengths of the measuring adjusting rod 3-1 and the measuring adjusting rod 3-4, finding a proper measuring position so that the laser displacement sensor 3-3 can measure the height change of four corners of the tail plate, then tightening the locking bolt 3-9, and tightening the locking bolt 3-2 and the locking nut 3-5.

5. And repeating the operation steps from one to three to complete the adjustment of 4 measuring devices, and measuring the height variation of the platform of the tail plate 5 by the laser displacement sensor 3-3.