A mobile traction seat sliding and locking performance test device and method

Abstract

The application provides a mobile traction seat sliding and locking performance test device and method. The test device comprises a reversing turntable, a pressure device and a push-pull device. The test method comprises the following steps: S1: fixing a rack of a mobile traction seat to be tested on the reversing turntable; S2: dividing the rack into a first part and a second part from a 1 / 2 length position, and testing the first part of the rack; S3: rotating the mobile traction seat by 180 degrees by the reversing turntable, so that the head and tail ends of the rack are reversed; S4: testing the second part of the rack; and S5: checking the quality of the mobile traction seat, so as to obtain a test result. The head and tail ends of the rack can be tested in two processes respectively when the mobile traction seat is tested for sliding and locking performance, and the stroke of the push-pull device is only half of the length of the rack in each process, so that the stroke length of the push-pull device is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of test equipment, in particular to a mobile towing seat sliding and locking performance test equipment and method. BACKGROUND

[0002] The semi-trailer towing seat is a device for connecting the towing vehicle and the semi-trailer, which is usually installed on the frame of the towing vehicle. A part of the weight of the semi-trailer acts on the towing seat. For the mobile towing seat, it also needs to adjust the towing seat in the front and rear directions when connecting with semi-trailers of different sizes or types. Therefore, the semi-trailer towing seat needs to be sampled and tested before leaving the factory to determine the load and sliding performance of the semi-trailer towing seat. Only after passing the test can it leave the factory.

[0003] Patent CN106769096B discloses a semi-trailer saddle type towing seat test bench and a test method thereof. The longitudinal pressure device and the transverse pressure device are used to apply pressure in different directions to the towing seat, thereby simulating the use process of the towing seat. However, the above-mentioned patent scheme can only test general towing seats (which cannot be adjusted in the front and rear directions), and cannot test mobile towing seats (which can be adjusted in the front and rear directions). SUMMARY

[0004] Based on the problems existing in the prior art, the present application aims to solve the technical problem that the semi-trailer saddle type towing seat test bench in the prior art cannot test the mobile towing seat.

[0005] The present application provides a mobile towing seat sliding and locking performance test equipment, the mobile towing seat comprising a rack, a towing seat body and a toothed fork mechanism, wherein the rack is used to support the towing seat body and is in sliding cooperation with the towing seat body; the toothed fork mechanism is arranged on the towing seat body and is used to cooperate with the rack to complete the locking or unlocking of the towing seat body; the mobile towing seat sliding and locking performance test equipment comprises:

[0006] A reversing turntable is used to fix the rack. The reversing turntable is configured to drive the rack to rotate, so that the head and tail ends of the rack are reversed, thereby allowing the head and tail ends of the rack to be tested separately in two processes when the mobile towing seat is tested for sliding and locking performance.

[0007] A pressure device is used to apply pressure load to the towing seat body.

[0008] A push-pull device is used to drive the reversing turntable to move back and forth, thereby driving the rack to slide back and forth relative to the towing seat body.

[0009] In some embodiments of the present application, the mobile towing seat sliding and locking performance test equipment further comprises a supporting device for supporting the reversing turntable, the supporting device comprising a base and a sliding table in sequence from bottom to top, wherein the base is fixed on the test platform, and the reversing turntable is arranged on the sliding table.

[0010] The output end of the push-pull device is connected with the sliding table, so as to drive the sliding table to move, thereby driving the reversing turntable and the rack to move.

[0011] In some embodiments of the present application, the push-pull device comprises:

[0012] A horizontal telescopic driving member is fixedly arranged on the test platform.

[0013] An adapter plate is fixedly arranged at one end of the sliding table.

[0014] A connecting pin is rotatably arranged on the adapter plate, and the output end of the horizontal telescopic driving member is fixedly connected with the connecting pin.

[0015] In some embodiments of the present application, the horizontal telescopic driving member is a horizontal servo actuator.

[0016] In some embodiments of the present application, the pressure device comprises:

[0017] A gantry frame.

[0018] A vertical telescopic driving member is fixedly arranged on the gantry frame.

[0019] A pressing plate is connected with the output end of the vertical telescopic driving member.

[0020] A towing pin is detachably fixedly connected to the bottom of the pressing plate.

[0021] In some embodiments of the present application, the pressing plate is hingedly connected with the output end of the vertical telescopic driving member.

[0022] In some embodiments of the present application, the pressure device further comprises a guide mechanism arranged at both ends of the pressing plate, the guide mechanism comprising:

[0023] A plurality of linear guides are fixedly arranged on the inner side wall of the gantry frame.

[0024] A plurality of slide block groups corresponding to the linear guides are fixedly arranged at the ends of the pressing plate and are in sliding fit with the corresponding linear guides, so that the slide block groups can slide vertically on the corresponding linear guides.

[0025] In some embodiments of the present application, the vertical telescopic driving member is a vertical servo actuator.

[0026] The application further provides a mobile towing seat sliding and locking performance test method, which is realized based on the mobile towing seat sliding and locking performance test device and comprises the following steps.

[0027] S1: fixing a rack of a mobile towing seat to be tested on the reversing turntable;

[0028] S2: dividing the rack from a 1 / 2 length position into a first part and a second part, and testing the sliding and locking performance of the first part of the rack;

[0029] S3: rotating the reversing turntable by 180° to reverse the first end and the tail end of the rack;

[0030] S4: testing the sliding and locking performance of the second part of the rack;

[0031] S5: checking the gap at the sliding fit position of the rack and the towing seat body and the locking and unlocking of the toothed fork mechanism and the rack, so as to obtain the test result.

[0032] In some embodiments of the application, the testing of the sliding and locking performance of the first part of the rack in step S2 and the testing of the sliding and locking performance of the second part of the rack in step S4 both comprise the following steps:

[0033] Step 1: applying a certain pressure load to the towing seat body by the pressure device;

[0034] Step 2: driving the reversing turntable to reciprocate once by the push-pull device, so as to drive the first part / second part of the rack to reciprocate once relative to the towing seat body;

[0035] Step 3: controlling the toothed fork mechanism to complete a locking and unlocking action once in cooperation with the rack;

[0036] Step 4: after repeating steps 2 and 3 for multiple times, removing the pressure load applied to the towing seat body by the pressure device.

[0037] The application has the following beneficial effects:

[0038] The application provides a mobile traction seat sliding and locking performance test device and method, the reversing turntable can drive the rack to rotate 180 degrees, so that the head and tail ends of the rack are reversed, so that the head and tail ends of the rack can be tested in two processes respectively when the mobile traction seat is tested in sliding and locking performance, and in each process, the stroke of the push-pull device is only half of the length of the rack, so that the stroke length of the push-pull device is reduced, and the overall size of the mobile traction seat sliding and locking performance test device is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0040] Figure 1 is a structural schematic diagram of a mobile traction seat in the prior art;

[0041] Figure 2 is a structural schematic diagram of a mobile traction seat sliding and locking performance test device provided by an embodiment of the application;

[0042] Figure 3 is Figure 2 is an enlarged schematic diagram of part A in

[0043] Figure 4 is a flow schematic diagram of a mobile traction seat sliding and locking performance test method provided by an embodiment of the application;

[0044] The drawings show that: 100, mobile traction seat; 101, rack; 102, traction seat body; 103, fork mechanism; 1, reversing turntable; 2, pressure device; 21, gantry; 22, vertical telescopic driving part; 23, pressing plate; 24, guide mechanism; 241, linear guide rail; 242, sliding block group; 3, push-pull device; 31, horizontal telescopic driving part; 32, adapter plate; 33, connecting pin; 4, supporting device; 41, base; 42, sliding table. DETAILED DESCRIPTION

[0045] The following description of the embodiments is made with reference to the additional drawings, which illustrate specific embodiments in which the application can be implemented.

[0046] The application provides a mobile traction seat sliding and locking performance test device, as shown in Figure 1The structure of the prior art mobile traction seat is shown in the structural schematic view, the mobile traction seat 100 includes a rack 101, a traction seat body 102 and a fork mechanism, wherein the rack 101 is used to support the traction seat body 102 and is in sliding fit with the traction seat body 102; the fork mechanism (not shown in the figure) is arranged on the traction seat body 102 and is used to cooperate with the rack 101 to complete the locking or unlocking of the traction seat body 102; the structure of the mobile traction seat sliding and locking performance test equipment is shown in Figure 2 The structure of the prior art mobile traction seat is shown in the structural schematic view, the mobile traction seat 100 includes a rack 101, a traction seat body 102 and a fork mechanism, wherein the rack 101 is used to support the traction seat body 102 and is in sliding fit with the traction seat body 102; the fork mechanism (not shown in the figure) is arranged on the traction seat body 102 and is used to cooperate with the rack 101 to complete the locking or unlocking of the traction seat body 102; the structure of the mobile traction seat sliding and locking performance test equipment is shown in

[0047] Through the above design, after the pressure device 2 applies the pressure load to the traction seat body 102, the push-pull device 3 can drive the reversing turntable 1 to move, thereby driving the rack 101 to slide relative to the traction seat body 102, so that the sliding and locking performance of the mobile traction seat 100 can be tested.

[0048] Please continue to refer to Figure 2 , specifically, the pressure device 2 includes a gantry 21, a vertical telescopic driving member 22, a pressure plate 23 and a traction pin, wherein the vertical telescopic driving member 22 is fixedly arranged on the gantry 21; as a specific embodiment, the vertical telescopic driving member 22 is a vertical servo actuator; the pressure plate 23 is connected with the output end of the vertical telescopic driving member 22, preferably, the pressure plate 23 is hingedly connected with the output end of the vertical telescopic driving member 22; the traction pin is detachably fixedly connected to the bottom of the pressure plate 23, while the pressure plate 23 applies the pressure load to the traction seat body 102, the traction pin can cooperate with the V-shaped opening of the traction seat body 102 to limit the movement of the traction seat body 102 in the horizontal direction.

[0049] It is easy to understand that in actual use, part of the weight of the semitrailer will act on the towing seat body 102, and the load applied to the towing seat body 102 by the vertical telescopic drive 22 through the pressing plate 23 can simulate the weight load of the semitrailer borne by the towing seat body 102 in actual use, thereby ensuring the authenticity of the test results.

[0050] Further, the pressing device 2 further comprises a guide mechanism 24 arranged at both ends of the pressing plate 23, the structure of the guide mechanism 24 is as shown in Figure 3 The guide mechanism 24 comprises a plurality of linear guides 241 and a plurality of slider groups 242 corresponding to the linear guides 241 one by one, wherein the linear guides 241 are fixedly arranged on the inner side wall of the gantry 21; the slider groups 242 are fixedly arranged at the ends of the pressing plate 23 and are in sliding cooperation with the corresponding linear guides 241, so that the slider groups 242 can slide vertically on the corresponding linear guides 241; the slider groups 242 comprise a plurality of sliders arranged side by side and in sliding cooperation with the same linear guide 241.

[0051] It can be understood that by arranging the guide mechanism 24 at both ends of the pressing plate 23, the load applied by the pressing plate 23 to the towing seat body 102 is vertical load, which can simulate the real force condition of the towing seat body 102 in actual use (the towing seat body 102 bears the gravity of the semitrailer in actual use, and the direction of gravity is vertical). On the other hand, when the pressing plate 23 is hingedly connected with the output end of the vertical telescopic drive 22, the guide mechanism 24 can ensure that when the pressing plate 23 bears lateral force (such as the transverse force transmitted to the pressing plate 23 through the towing pin when the movable towing seat 100 is subjected to the pushing and pulling force of the pushing and pulling device 3), the pressing plate 23 can still be kept in a vertical line with the vertical telescopic drive 22, thereby ensuring the stability of the test process.

[0052] Please continue to refer to Figure 2 Further, in order to provide support for the reversing disc 1, the movable towing seat sliding and locking performance test equipment further comprises a supporting device 4 for providing support for the reversing disc 1, the supporting device 4 comprises a base 41 and a sliding table 42 in sliding cooperation with the upper surface of the base 41, which are arranged in sequence from bottom to top, wherein the base 41 is fixed on the test platform, and the reversing disc 1 is fixedly arranged on the sliding table 42.

[0053] The output end of the pushing and pulling device 3 is connected with the sliding table 42, so as to drive the sliding table 42 to move, thereby driving the reversing disc 1 and the rack 101 to move.

[0054] In some embodiments of the present application, the push-pull device 3 comprises a transverse telescopic drive 31, an adapter plate 32 and a connecting pin 33, wherein the transverse telescopic drive 31 is fixedly arranged on the test platform; as a specific embodiment, the transverse telescopic drive 31 is a horizontal servo actuator; the adapter plate 32 is fixedly arranged at one end of the sliding table 42; the connecting pin 33 is rotatably arranged on the adapter plate 32, and the output end of the transverse telescopic drive 31 is fixedly connected with the connecting pin 33.

[0055] It is easy to understand that, when the mobile towing seat 100 is connected with semi-trailers of different sizes or types in actual use, it is necessary to adjust the towing seat body 102 in the front and rear directions relative to the rack 101 to enable the toothed fork mechanism to engage with different positions of the rack 101, and the push-pull device 3 can simulate this situation to make the sliding test of the mobile towing seat 100 more consistent with the real use scenario, thereby ensuring the authenticity of the test results.

[0056] The present application also provides a mobile towing seat sliding and locking performance test method, which is realized based on the mobile towing seat sliding and locking performance test device, as shown in Figure 4 The mobile towing seat sliding and locking performance test method step flow chart comprises the following steps:

[0057] S1: fixing the rack 101 of the mobile towing seat 100 to be tested on the reversing turntable 1;

[0058] S2: dividing the rack 101 into a first part and a second part from a 1 / 2 length position, and testing the sliding and locking performance of the first part of the rack 101, comprising:

[0059] Step 1: applying a certain pressure load to the towing seat body 102 through the pressure device 2, while the pressure device applies the pressure load to the towing seat body 102, the towing pin is matched with the V-shaped opening of the towing seat body 102 to limit the movement of the towing seat body 102 in the horizontal direction; in essence, the matching of the towing pin with the V-shaped opening of the towing seat body 102 is the same as the matching of the towing pin of the semi-trailer with the V-shaped opening of the towing seat body 102 in actual use.

[0060] Step 2: driving the reversing turntable 1 to reciprocate once by the push-pull device 3, thereby driving the first part of the rack 101 to reciprocate once relative to the towing seat body 102;

[0061] Wherein, the reciprocating sliding of the first part of the rack 101 relative to the towing seat body 102 once refers to the reciprocating sliding of the towing seat body 102 relative to the first part of the rack 101 once.

[0062] Step 3, operate the yoke mechanism to complete a locking and unlocking action with the rack 101; since the movable towing seat 100 is provided with a rack 101 and a yoke mechanism, the locking and unlocking action of the yoke mechanism with the rack 101 is a prior art, so the principle of locking and unlocking is not described in detail in this embodiment.

[0063] Step 4, after repeating steps 2 and 3 multiple times (such as 50,000-100,000 times), the pressure device 2 is removed from the pressure load applied to the towing seat body 102.

[0064] S3: The reversing turntable 1 drives the movable towing seat 100 to rotate 180°, so that the first and second ends of the rack 101 are reversed;

[0065] S4: Test the sliding and locking performance of the second part of the rack 101, including:

[0066] Step 1, apply a certain pressure load to the towing seat body 102 through the pressure device 2, and at the same time that the pressure device applies a pressure load to the towing seat body 102, the towing pin is matched with the V-shaped opening of the towing seat body 102 to limit the horizontal movement of the towing seat body 102;

[0067] Step 2, the push-pull device 3 drives the reversing turntable 1 to reciprocate once, thereby driving the second part of the rack 101 to reciprocate relative to the towing seat body 102 once;

[0068] Wherein, the reciprocating sliding of the second part of the rack 101 relative to the towing seat body 102 once refers to the reciprocating sliding of the towing seat body 102 relative to the second part of the rack 101 once.

[0069] Step 3, operate the yoke mechanism to complete a locking and unlocking action with the rack 101;

[0070] Step 4, after repeating steps 2 and 3 multiple times (such as 50,000-100,000 times), the pressure device 2 is removed from the pressure load applied to the towing seat body 102.

[0071] S5: Check the gap at the sliding fit position of the rack 101 and the towing seat body 102, and the locking and unlocking of the yoke mechanism with the rack 101, thereby obtaining the test results;

[0072] Due to the sliding fit of the rack 101 and the towing seat body 102, the sliding pair surface formed by the rack 101 and the towing seat body 102 will be worn after the rack 101 reciprocally moves relative to the towing seat body 102 for multiple times, and the size of the gap at the sliding fit position of the rack 101 and the towing seat body 102 can reflect the wear condition; in addition, due to the large weight of the semitrailer, the pressure load applied by the pressure device 2 to the towing seat body 102 is equivalent to the gravity load actually borne by the towing seat body 102 in use, and the rack 101 will be deformed to a certain extent under the action of the pressure load, and when the deformation is serious, the toothed yoke mechanism and the rack 101 cannot normally be locked or unlocked, therefore, by checking the locking and unlocking conditions of the toothed yoke mechanism and the rack 101, the deformation condition of the rack 101 can be obtained, so as to check whether the quality of the mobile towing seat 100 is qualified.

[0073] The mobile towing seat sliding and locking performance test method is divided into two processes, one process is for testing the first part of the rack 101, and the other process is for testing the second part of the rack 101, the length of the first part and the second part is 1 / 2 of the length of the rack 101, so that the push-pull device 3 can complete the test with a smaller stroke length, and the length size of the push-pull device 3 is reduced; and in the two test processes, the towing seat body 102 is relatively moved to the 1 / 2 length position of the rack 101, so that the middle position of the rack 101 bears the load most frequently, which can better match the condition that the middle part of the rack 101 bears the gravity load when the mobile towing seat 100 is used.

[0074] In summary, the mobile towing seat sliding and locking performance test equipment and method provided by the application can drive the rack 101 to rotate 180° through the reversing turntable 1, so that the head and tail ends of the rack 101 are reversed, and the head and tail ends of the rack 101 can be tested in two processes respectively when the sliding and locking performance of the mobile towing seat 100 is tested, and in each process, the stroke of the push-pull device 3 is only half of the length of the rack 101, which reduces the stroke length of the push-pull device 3 and is beneficial to reducing the overall size of the mobile towing seat sliding and locking performance test equipment.

[0075] It should be noted that although the application is disclosed as above with specific embodiments, the above embodiments are not used to limit the application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the application, therefore, the protection scope of the application is defined by the scope of the claims.

Claims

1. A mobile towing seat sliding and locking performance test device, the mobile towing seat (100) comprising a rack (101), a towing seat body (102) and a toothed fork mechanism, wherein, The rack (101) is used to support the hitch body (102) and is in sliding fit with the hitch body (102); the yoke mechanism is arranged on the hitch body (102) and is used to cooperate with the rack (101) to complete locking or unlocking of the hitch body (102); and the yoke mechanism is characterized in that it comprises: A reversing turntable (1) is used to fix the rack (101); the reversing turntable (1) is configured to drive the rack (101) to rotate, so that the head and tail ends of the rack (101) are reversed, thereby allowing the head and tail ends of the rack (101) to be tested in two processes respectively when the sliding and locking performance test of the mobile hitch (100) is performed; A pressure device (2) is used to apply pressure load to the hitch body (102); A push-pull device (3) is used to drive the reversing turntable (1) to reciprocate, thereby driving the rack (101) to reciprocate relative to the hitch body (102); Further comprising a support device (4) used to provide support for the reversing turntable (1), the support device (4) comprising a base (41) arranged in sequence from bottom to top, and a sliding table (42) in sliding fit with the upper surface of the base (41), wherein the base (41) is fixed on a test platform, and the reversing turntable (1) is arranged on the sliding table (42); The output end of the push-pull device (3) is connected with the sliding table (42) to drive the sliding table (42) to move, thereby driving the reversing turntable (1) and the rack (101) to move; The push-pull device (3) comprises: A horizontal telescopic driving member (31) fixedly arranged on the test platform; An adapter plate (32) fixedly arranged on one end of the sliding table (42); A connecting pin (33) rotatably arranged on the adapter plate (32), and the output end of the horizontal telescopic driving member (31) is fixedly connected with the connecting pin (33).

2. The mobile tow seat sliding and locking performance test apparatus according to claim 1, wherein, The horizontal telescopic driving member (31) is a horizontal servo actuator.

3. The mobile tow seat slip and lock performance testing apparatus of claim 1, wherein, The pressure device (2) comprises: A gantry (21); A vertical telescopic driving member (22) fixedly arranged on the gantry (21); A pressing plate (23) connected with the output end of the vertical telescopic driving member (22); A hitch pin detachably fixedly connected to the bottom of the pressing plate (23).

4. The mobile tow seat sliding and locking performance test apparatus according to claim 3, wherein, The pressing plate (23) is hingedly connected with the output end of the vertical telescopic driving member (22).

5. The mobile tow seat sliding and locking performance test apparatus according to claim 3, wherein, The pressure device (2) further comprises guide mechanisms (24) arranged at both ends of the pressing plate (23), and the guide mechanisms (24) comprise: A plurality of linear guide rails (241) fixedly arranged on the inner side wall of the gantry (21); A plurality of slider groups (242) corresponding to the linear guide rails (241), the slider groups (242) being fixedly arranged at the ends of the pressing plate (23) and being in sliding fit with the corresponding linear guide rails (241), so that the slider groups (242) slide vertically on the corresponding linear guide rails (241).

6. The mobile tow seat sliding and locking performance test apparatus of claim 3, wherein, The vertical telescopic driving member (22) is a vertical servo actuator.

7. A method for testing the sliding and locking performance of a mobile towing seat, implemented based on the mobile towing seat sliding and locking performance testing device according to any one of claims 1-6, characterized in that, The method comprises the following steps: S1: fixing the rack of the mobile towing seat to be tested on the reversing turntable; S2: dividing the rack into a first part and a second part from a 1 / 2 length position, testing the sliding and locking performance of the first part of the rack; S3: rotating the mobile towing seat by 180° by the reversing turntable to reverse the first end and the tail end of the rack; S4: testing the sliding and locking performance of the second part of the rack; S5: checking the gap at the sliding fit position of the rack and the towing seat body, and the locking and unlocking of the toothed fork mechanism and the rack, thereby obtaining the test results.

8. The method of claim 7, wherein, The steps S2 and S4 of testing the sliding and locking performance of the first part and the second part of the rack respectively comprise the following steps: Step 1: applying a certain pressure load to the towing seat body by the pressure device; Step 2: driving the reversing turntable to reciprocate once by the push-pull device, thereby driving the first part / second part of the rack to reciprocate once relative to the towing seat body; Step 3: controlling the toothed fork mechanism to complete a locking and unlocking action once with the rack; Step 4: repeating steps 2 and 3 for multiple times, and then removing the pressure load applied to the towing seat body by the pressure device.

Images