Device and method for testing sliding and locking performance of movable traction seat

Abstract

The invention provides equipment and a method for testing sliding and locking performance of a movable traction seat. The testing equipment 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 a 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, the reversing rotary disc drives the movable traction base to rotate by 180 degrees so that the head end and the tail end of the rack can be reversed; s4, testing the second part of the rack; and S5, checking the quality condition of the movable traction seat so as to obtain a test result. According to the scheme, when the sliding performance and the locking performance of the movable traction seat are tested, the head end and the tail end of the rack can be tested in two processes, in each process, the stroke of the push-pull device is only half of the length of the rack, and the stroke length of the push-pull device is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of testing equipment, and in particular to a device and method for testing the sliding and locking performance of a mobile fifth wheel. Background Art

[0002] The semi-trailer fifth wheel is a device used to connect a tractor and a semi-trailer. It is usually installed on the frame of the tractor. Part of the weight of the semi-trailer will act on the fifth wheel. In addition, for a mobile fifth wheel, when it is connected to semi-trailers of different sizes or types, the fifth wheel needs to be adjusted in the front and rear directions. Therefore, the semi-trailer fifth wheel must undergo sampling testing before leaving the factory to determine the load and sliding performance of the semi-trailer fifth wheel. It can only leave the factory after passing the test.

[0003] Patent CN106769096B discloses a semi-trailer saddle-type fifth wheel test bench and test method. This test bench utilizes longitudinal and lateral pressure devices to apply pressure in different directions to the fifth wheel, thereby simulating the use of the fifth wheel. However, this patented solution can only test standard fifth wheels (which cannot be adjusted forward or backward), and cannot test mobile fifth wheels (which can be adjusted forward or backward). Summary of the Invention

[0004] Based on the above problems in the prior art, the present invention aims to solve the technical problem in the prior art that a semi-trailer saddle-type fifth wheel test bench cannot test a mobile fifth wheel.

[0005] The present invention provides a mobile fifth wheel sliding and locking performance testing device, wherein the mobile fifth wheel comprises a rack, a fifth wheel body, and a tine mechanism, wherein the rack is used to support the fifth wheel body and to slide in cooperation with the fifth wheel body; the tine mechanism is provided on the fifth wheel body and is used to cooperate with the rack to lock or unlock the fifth wheel body; the mobile fifth wheel sliding and locking performance testing device comprises: a reversing turntable for fixing the rack; the reversing turntable is configured to drive the rack to rotate so as to reverse the direction of the leading and trailing ends of the rack, thereby enabling the leading and trailing ends of the rack to be tested separately in two steps when the sliding and locking performance tests of the mobile fifth wheel are performed; a pressure device for applying a pressure load to the fifth wheel body; The 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 traction seat body.

[0006] In some embodiments of the present invention, the mobile fifth wheel sliding and locking performance testing equipment further includes a support device for supporting the reversing turntable, wherein the support device includes a base and a slide slidably engaged with the upper surface of the base, wherein the base is fixed on the test platform and the reversing turntable is arranged on the slide; The output end of the push-pull device is connected to the slide to drive the slide to move, thereby driving the reversing turntable and the rack to move.

[0007] In some embodiments of the present invention, the push-pull device includes: The transverse telescopic driving member is fixedly arranged on the test platform; an adapter plate, fixedly arranged at one end of the slide; A connecting pin is rotatably arranged on the adapter plate, and an output end of the transverse telescopic driving member is fixedly connected to the connecting pin.

[0008] In some embodiments of the present invention, the transverse telescopic driving member is a horizontal servo actuator.

[0009] In some embodiments of the present invention, the pressure device comprises: gantry; A vertical telescopic driving member is fixedly arranged on the gantry; a pressing plate connected to the output end of the vertical telescopic driving member; A traction pin is detachably fixedly connected to the bottom of the pressure plate.

[0010] In some embodiments of the present invention, the pressure plate is hingedly connected to the output end of the vertical telescopic driving member.

[0011] In some embodiments of the present invention, the pressure device further includes a guide mechanism provided at both ends of the pressure plate, and the guide mechanism includes: A plurality of linear guide rails are fixedly arranged on the inner side wall of the gantry; A plurality of slider groups corresponding to the linear guide rails are fixedly arranged at the end of the pressure plate and slidably cooperate with the corresponding linear guide rails so that the slider groups can slide vertically on the corresponding linear guide rails.

[0012] In some embodiments of the present invention, the vertical telescopic driving member is a vertical servo actuator.

[0013] The present invention also provides a method for testing the sliding and locking performance of a mobile fifth wheel, which is implemented based on the mobile fifth wheel sliding and locking performance testing device, and includes the following steps: S1: Fixing the rack of the mobile fifth wheel to be tested on the reversing turntable; S2: Divide the rack into a first part and a second part at a 1 / 2 length position, and test the sliding and locking performance of the first part of the rack; S3: The reversing turntable drives the mobile traction seat to rotate 180 degrees, so that the front and rear ends of the rack are reversed; S4: testing the sliding and locking performance of the second portion of the rack; S5: Check the clearance between the rack and the fifth wheel body at the sliding fit position, as well as the locking and unlocking conditions of the tine mechanism and the rack, to obtain the test results.

[0014] In some embodiments of the present invention, the step S2 of testing the sliding and locking performance of the first portion of the rack and the step S4 of testing the sliding and locking performance of the second portion of the rack both include the following steps: Step 1: applying a certain pressure load to the fifth wheel body through the pressure device; Step 2: The push-pull device drives the reversing turntable to move back and forth once, thereby driving the first part / second part of the rack to slide back and forth once relative to the traction seat body; Step 3: operating the tine mechanism to cooperate with the rack to complete a locking and unlocking action; Step 4: After repeating steps 2 and 3 multiple times, the pressure load applied by the pressure device to the fifth wheel body is canceled.

[0015] The beneficial effects of the present invention are: The present invention provides a mobile fifth wheel sliding and locking performance testing device and method. The reversing turntable can drive the rack to rotate 180 degrees to reverse the direction of the front and rear ends of the rack. Therefore, when the sliding and locking performance test of the mobile fifth wheel is performed, the front and rear ends of the rack can be tested respectively in two processes. In each process, the stroke of the push-pull device is only half of the length of the rack, which reduces the stroke length of the push-pull device and is conducive to reducing the overall size of the mobile fifth wheel sliding and locking performance testing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1It is a structural diagram of a mobile traction seat in the prior art; Figure 2 1 is a structural diagram of a mobile fifth wheel sliding and locking performance testing device provided by an embodiment of the present invention; Figure 3 yes Figure 2 A magnified schematic diagram of the middle part A; Figure 4 1 is a flow chart of a method for testing the sliding and locking performance of a mobile fifth wheel provided by an embodiment of the present invention; Figure numerals: 100, mobile traction seat; 101, rack; 102, traction seat body; 103, tine fork mechanism; 1, reversing turntable; 2, pressure device; 21, gantry; 22, vertical telescopic drive member; 23, pressure plate; 24, guide mechanism; 241, linear guide rail; 242, slider group; 3, push-pull device; 31, horizontal telescopic drive member; 32, adapter plate; 33, connecting pin; 4, supporting device; 41, base; 42, slide. DETAILED DESCRIPTION

[0018] The following descriptions of the embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention may be implemented.

[0019] The present invention provides a mobile fifth wheel sliding and locking performance testing device, such as Figure 1 FIG2 is a schematic diagram of the structure of a mobile fifth wheel in the prior art. The mobile fifth wheel 100 includes a rack 101, a fifth wheel body 102, and a tine mechanism. The rack 101 is used to support the fifth wheel body 102 and to slide with the fifth wheel body 102. The tine mechanism (not shown in the figure) is provided on the fifth wheel body 102 and is used to cooperate with the rack 101 to lock or unlock the fifth wheel body 102. The structure of the mobile fifth wheel sliding and locking performance testing device is shown in FIG2. Figure 2As shown, it includes a reversing turntable 1, a pressure device 2 and a push-pull device 3, wherein the reversing turntable 1 is used to fix the rack 101, and 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, so that when the sliding and locking performance tests of the mobile traction seat 100 are performed, the head and tail ends of the rack 101 can be tested separately in two processes; specifically, the reversing turntable 1 includes a fixed portion, a rotating portion rotatably arranged on the fixed portion, and a rotating driving portion fixedly arranged on the fixed portion, the rotating driving portion is used to drive the rotating portion to rotate relative to the fixed portion, and the rack 101 is detachably fixed to the rotating portion; the pressure device 2 is used to apply a pressure load to the traction seat body 102; the push-pull device 3 is used to drive the reversing turntable 1 to move back and forth, thereby driving the rack 101 to slide back and forth relative to the traction seat body 102.

[0020] Through the above design, after the pressure device 2 applies a 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.

[0021] Please continue to refer to Figure 2 Specifically, the pressure device 2 includes a gantry 21, a vertical telescopic drive member 22, a pressure plate 23 and a traction pin, wherein the vertical telescopic drive member 22 is fixedly arranged on the gantry 21; as a specific embodiment, the vertical telescopic drive member 22 is a vertical servo actuator; the pressure plate 23 is connected to the output end of the vertical telescopic drive member 22, and preferably, the pressure plate 23 is hingedly connected to the output end of the vertical telescopic drive member 22; the traction pin is detachably fixedly connected to the bottom of the pressure plate 23, and when the pressure plate 23 applies a 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 horizontal movement of the traction seat body 102.

[0022] It is easy to understand that when the mobile fifth wheel 100 is actually used, part of the weight of the semi-trailer will act on the fifth wheel body 102, and the load applied to the fifth wheel body 102 by the vertical telescopic drive member 22 through the pressure plate 23 can simulate the semi-trailer weight load that the fifth wheel body 102 bears in actual use, thereby ensuring the authenticity of the test results.

[0023] Furthermore, the pressure device 2 further includes a guide mechanism 24 provided at both ends of the pressure plate 23. The structure of the guide mechanism 24 is as follows: Figure 3As shown, it includes a plurality of linear guide rails 241 and a plurality of slider groups 242 corresponding to the linear guide rails 241, wherein the linear guide rails 241 are fixedly arranged on the inner wall of the gantry 21; the slider group 242 is fixedly arranged at the end of the pressure plate 23 and slidingly cooperates with the corresponding linear guide rails 241, so that the slider group 242 can slide vertically on the corresponding linear guide rails 241; the slider group 242 includes a plurality of sliders arranged side by side and slidingly cooperated with the same linear guide rail 241.

[0024] It will be appreciated that by providing the guide mechanisms 24 at both ends of the pressure plate 23, the load applied by the pressure plate 23 to the fifth wheel body 102 is a vertical load, thereby simulating the actual force applied to the fifth wheel body 102 during actual use (in actual use, the fifth wheel body 102 is subjected to the weight of the semi-trailer, with the direction of gravity being vertical). Furthermore, when the pressure plate 23 is hingedly connected to the output end of the vertical telescopic drive member 22, the guide mechanisms 24 ensure that the pressure plate 23 remains aligned vertically with the vertical telescopic drive member 22 when subjected to lateral forces (such as the lateral force transmitted to the pressure plate 23 via the traction pin when the mobile fifth wheel 100 is subjected to the push-pull force of the push-pull device 3), thereby ensuring stability during the testing process.

[0025] Please continue to refer to Figure 2 Furthermore, in order to provide support for the reversing turntable 1, the mobile traction seat sliding and locking performance testing equipment further includes a supporting device 4 for supporting the reversing turntable 1, the supporting device 4 includes a base 41 arranged in sequence from bottom to top, and a slide 42 slidably matched with the upper surface of the base 41, wherein the base 41 is fixed on the test platform, and the reversing turntable 1 is fixedly arranged on the slide 42; The output end of the push-pull device 3 is connected to the slide 42 to drive the slide 42 to move, thereby driving the reversing turntable 1 and the rack 101 to move.

[0026] In some embodiments of the present invention, the push-pull device 3 includes a transverse telescopic drive member 31, an adapter plate 32 and a connecting pin 33, wherein the transverse telescopic drive member 31 is fixedly arranged on the test platform; as a specific embodiment, the transverse telescopic drive member 31 is a horizontal servo actuator; the adapter plate 32 is fixedly arranged at one end of the slide 42; the connecting pin 33 is rotatably arranged on the adapter plate 32, and the output end of the transverse telescopic drive member 31 is fixedly connected to the connecting pin 33.

[0027] It is easy to understand that, when the mobile fifth wheel 100 is connected to semi-trailers of different sizes or types in actual use, the fifth wheel body 102 needs to be adjusted in the front and rear directions relative to the rack 101 so that the tine mechanism engages with different positions of the rack 101. The push-pull device 3 can simulate this situation to make the sliding test of the mobile fifth wheel 100 more in line with the actual use scenario, thereby ensuring the authenticity of the test results.

[0028] The present invention also provides a method for testing the sliding and locking performance of a mobile fifth wheel, which is implemented based on the mobile fifth wheel sliding and locking performance testing device. Figure 4 The figure shows a flow chart of the steps of the mobile fifth wheel sliding and locking performance testing method, which includes the following steps: S1: Fixing the rack 101 of the mobile fifth wheel 100 to be tested on the reversing turntable 1; S2: Divide the rack 101 into a first portion and a second portion at a 1 / 2 length position, and test the sliding and locking performance of the first portion of the rack 101, including: In step 1, a certain pressure load is applied to the fifth wheel body 102 by the pressure device 2. While the pressure device applies the pressure load to the fifth wheel body 102, the traction pin cooperates with the V-shaped opening of the fifth wheel body 102 to limit the horizontal movement of the fifth wheel body 102. In essence, the cooperation between the traction pin and the V-shaped opening of the fifth wheel body 102 is the same as the cooperation between the traction pin and the V-shaped opening of the fifth wheel body 102 of a semi-trailer in actual use.

[0029] Step 2: The push-pull device 3 drives the reversing turntable 1 to move back and forth once, thereby driving the first portion of the rack 101 to slide back and forth relative to the traction seat body 102 once; The first portion of the rack 101 slides back and forth once relative to the traction seat body 102 , which means that the traction seat body 102 slides back and forth once on the first portion of the rack 101 .

[0030] Step 3: Operate the tine mechanism to cooperate with the rack 101 to complete a locking and unlocking action. Since the mobile traction seat 100 is equipped with a rack 101 and a tine mechanism, the locking and unlocking actions of the tine mechanism and the rack 101 are prior art, and thus the known and unlocking principles are not described in detail in this embodiment.

[0031] Step 4: After repeating steps 2 and 3 multiple times (eg, 50,000 to 100,000 times), the pressure load applied by the pressure device 2 to the fifth wheel body 102 is canceled.

[0032] S3: The reversing turntable 1 drives the mobile traction seat 100 to rotate 180 degrees, so that the front and rear ends of the rack 101 are reversed; S4: Testing the sliding and locking performance of the second portion of the rack 101, including: Step 1: Apply a certain pressure load to the fifth wheel body 102 by the pressure device 2. When the pressure device applies the pressure load to the fifth wheel body 102, the traction pin cooperates with the V-shaped opening of the fifth wheel body 102 to restrict the movement of the fifth wheel body 102 in the horizontal direction. Step 2: The push-pull device 3 drives the reversing turntable 1 to move back and forth once, thereby driving the second portion of the rack 101 to slide back and forth once relative to the traction seat body 102; The second portion of the rack 101 slides back and forth once relative to the traction seat body 102 , which means that the traction seat body 102 slides back and forth once on the second portion of the rack 101 .

[0033] Step 3: Operate the tine mechanism to cooperate with the rack 101 to complete a locking and unlocking action; Step 4: After repeating steps 2 and 3 multiple times (eg, 50,000 to 100,000 times), the pressure load applied by the pressure device 2 to the fifth wheel body 102 is canceled.

[0034] S5: Checking the clearance between the rack 101 and the fifth wheel body 102 at the sliding fit position, and the locking and unlocking conditions of the tine mechanism and the rack 101, thereby obtaining a test result; The rack 101 and the hitch body 102 are in sliding engagement with each other, and after the rack 101 moves back and forth multiple times relative to the hitch body 102, the sliding surface of the sliding pair formed by the rack 101 and the hitch body 102 will produce a certain amount of wear, and the size of the gap between the rack 101 and the hitch body 102 at the sliding engagement position can reflect the wear condition. In addition, due to the heavy weight of the semi-trailer, the pressure load applied by the pressure device 2 to the hitch body 102 is equivalent to the gravity load borne by the hitch body 102 during actual use. The rack 101 will be deformed to a certain extent under the action of the pressure load. When the deformation is severe, the tine fork mechanism and the rack 101 cannot be locked or unlocked normally. Therefore, by checking the locking and unlocking conditions of the tine fork mechanism and the rack 101, the deformation condition of the rack 101 can be obtained, thereby checking whether the quality of the mobile hitch body 100 is qualified.

[0035] The sliding and locking performance testing method of the mobile traction seat is carried out in two processes, one of which is to test the first part of the rack 101, and the other is to test the second part of the rack 101. The lengths of the first part and the second part are respectively 1 / 2 of the length of the rack 101, so that the push-pull device 3 can complete the test with a shorter stroke length, reducing the length size of the push-pull device 3; and, in both testing processes, the traction seat body 102 is relatively moved to a position of 1 / 2 of the length of the rack 101, so that the middle position of the rack 101 bears the most load times, which can better match the situation where the middle part of the rack 101 bears gravity load when the mobile traction seat 100 is in use.

[0036] In summary, the present invention provides a mobile traction seat sliding and locking performance testing device and method, the reversing turntable 1 can drive the rack 101 to rotate 180 degrees, so that the head and tail ends of the rack 101 are reversed, so that when the sliding and locking performance test of the mobile traction seat 100 is performed, the head and tail ends of the rack 101 can be tested separately in two processes, 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 conducive to reducing the overall size of the mobile traction seat sliding and locking performance testing device.

[0037] It should be noted that although the present invention is disclosed above with specific embodiments, the above embodiments are not intended to limit the present invention. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the claims.

Claims

1. A mobile fifth wheel sliding and locking performance testing device, the mobile fifth wheel (100) comprising a rack (101), a fifth wheel body (102) and a tine mechanism, wherein: The rack (101) is used to support the traction seat body (102) and is slidably matched with the traction seat body (102); the tine mechanism is provided 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); and is characterized by comprising: 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 front and rear ends of the rack (101) are reversed, so that when the sliding and locking performance tests of the mobile traction seat (100) are performed, the front and rear ends of the rack (101) can be tested in two processes respectively; A pressure device (2) for applying a pressure load to the fifth wheel body (102); The push-pull device (3) is used to drive the reversing turntable (1) to move back and forth, thereby driving the rack (101) to slide back and forth relative to the traction seat body (102).

2. The mobile fifth wheel sliding and locking performance testing device according to claim 1, characterized in that: It also includes a support device (4) for providing support for the reversing turntable (1), the support device (4) including a base (41) and a slide (42) slidably engaged with the upper surface of the base (41) arranged in sequence from bottom to top, wherein the base (41) is fixed on the test platform, and the reversing turntable (1) is arranged on the slide (42); The output end of the push-pull device (3) is connected to the slide (42) to drive the slide (42) to move, thereby driving the reversing turntable (1) and the rack (101) to move.

3. The mobile fifth wheel sliding and locking performance testing device according to claim 2, characterized in that: The push-pull device (3) comprises: A transverse telescopic driving member (31) is fixedly arranged on the test platform; An adapter plate (32) is fixedly arranged on one end of the slide (42); A connecting pin (33) is rotatably mounted on the adapter plate (32), and an output end of the transverse telescopic driving member (31) is fixedly connected to the connecting pin (33).

4. The mobile fifth wheel sliding and locking performance testing device according to claim 3, characterized in that: The transverse telescopic driving member (31) is a horizontal servo actuator.

5. The mobile fifth wheel sliding and locking performance testing device according to claim 1, characterized in that: The pressure device (2) comprises: Gantry (21); A vertical telescopic driving member (22) is fixedly arranged on the gantry (21); A pressing plate (23) connected to the output end of the vertical telescopic driving member (22); A traction pin is detachably fixedly connected to the bottom of the pressure plate (23).

6. The mobile fifth wheel sliding and locking performance testing device according to claim 5, characterized in that: The pressing plate (23) is hingedly connected to the output end of the vertical telescopic driving member (22).

7. The mobile fifth wheel sliding and locking performance testing device according to claim 5, characterized in that: The pressure device (2) further includes a guide mechanism (24) provided at both ends of the pressure plate (23), the guide mechanism (24) including: A plurality of linear guide rails (241) are fixedly arranged on the inner side wall of the gantry (21); A plurality of slider groups (242) corresponding one to the linear guide rails (241) are provided, wherein the slider groups (242) are fixedly arranged at the ends of the pressure plates (23) and are slidably engaged with the corresponding linear guide rails (241), so that the slider groups (242) can slide vertically on the corresponding linear guide rails (241).

8. The mobile fifth wheel sliding and locking performance testing device according to claim 5, characterized in that: The vertical telescopic driving member (22) is a vertical servo actuator.

9. A method for testing the sliding and locking performance of a mobile fifth wheel, implemented based on the mobile fifth wheel sliding and locking performance testing device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: Fixing the rack of the mobile fifth wheel to be tested on the reversing turntable; S2: Divide the rack into a first part and a second part at a 1 / 2 length position, and test the sliding and locking performance of the first part of the rack; S3: The reversing turntable drives the mobile traction seat to rotate 180 degrees, so that the front and rear ends of the rack are reversed; S4: testing the sliding and locking performance of the second portion of the rack; S5: Check the clearance between the rack and the fifth wheel body at the sliding fit position, as well as the locking and unlocking conditions of the tine mechanism and the rack, to obtain the test results.

10. The method for testing the sliding and locking performance of a mobile fifth wheel according to claim 9, wherein: The testing of the sliding and locking performance of the first portion of the rack in step S2 and the testing of the sliding and locking performance of the second portion of the rack in step S4 both include the following steps: Step 1: applying a certain pressure load to the fifth wheel body through the pressure device; Step 2: The push-pull device drives the reversing turntable to move back and forth once, thereby driving the first part / second part of the rack to slide back and forth once relative to the traction seat body; Step 3: operating the tine mechanism to cooperate with the rack to complete a locking and unlocking action; Step 4: After repeating steps 2 and 3 multiple times, the pressure load applied by the pressure device to the fifth wheel body is canceled.

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