A driving caster traction force test device

Abstract

The invention discloses a driving caster traction test device, comprising a test bench, an adjusting rod, an adjusting block, a fixing rod, a test rod, a puncher, a protective plate, a mounting block, a supporting leg, a clamping ring, a fixing plate, a limiting rod, a limiting spring, a pulling rod, a connecting rod, a telescopic spring, a dustproof plate, a connecting spring, a sliding block and a stabilizing block. The mounting block is fixed on the top of the test bench, and a fixing plate is symmetrically fixed on one side of the mounting block at the top of the test bench, and one end of the fixing plate is fixedly connected to the mounting block. The invention drives the driving wheel to move through the gravity block, so that the driving wheel drives the paper strip to move, and the puncher punches holes in the paper strip to test the traction, and the adjusting rod squeezes the adjusting block to release the limiting of the adjusting rod, so that the limiting spring drives the limiting rod to move upward, so that the driving wheel is taken out, the accuracy of the traction test is increased, the driving wheel is convenient to take out, the operation time is saved, and the work efficiency is improved.

Description

Technical Field

[0001] The invention relates to a traction force testing device, in particular to a driving caster traction force testing device, belonging to the technical field of driving caster application. Background Art

[0002] Casters are a general term, including movable casters, fixed casters and movable casters with brakes. Movable casters are what we call universal wheels, and their structure allows 360-degree rotation. Fixed casters are also called fixed casters, and they have no rotating structure. In existing processing plants, traction tests will be performed on drive casters after they are produced.

[0003] The existing traction test device is a relatively bulky iron product and is difficult to assemble. The installation and disassembly of the equipment is time-consuming. At the same time, some equipment that requires space is sealed and fixed by bolts. When the bolts are damaged, it is difficult to disassemble them, which consumes a lot of time and reduces work efficiency. For this reason, we propose a drive caster traction test device. Summary of the invention

[0004] The purpose of the present invention is to provide a driving caster traction test device, which seals the space through the mutual cooperation of the stabilizing block, the first stabilizing groove, the second stabilizing groove, the third stabilizing groove, the dustproof plate and the telescopic spring. The device has a simple structure and is easy to operate. It saves the installation time of the installation groove, increases the sealing effect, prevents dust from entering therein, and increases the practical life of the device. The traction is tested by the gravity block, the driving wheel, the paper strip and the puncher. The driving wheel is taken out through the mutual cooperation of the adjusting rod, the adjusting block, the limit spring and the limit rod, thereby increasing the accuracy of the traction test, bringing convenience to the removal of the driving wheel, saving operation time and improving work efficiency.

[0005] The technical problems solved by the present invention are:

[0006] (1) How to move the stabilizing block into the first stabilizing groove so that a limit is formed between the first stabilizing groove and the stabilizing block, and the dustproof plate cooperates with the dustproof groove under the elastic force of the connecting spring, thereby sealing the installation groove to solve the problem that the device cannot be quickly and effectively sealed in the prior art.

[0007] (2) How to use the gravity block to drive the driving wheel to move, so that the driving wheel drives the paper strip to move, and the puncher punches holes in the paper strip to test the traction force. The adjusting rod squeezes the adjusting block to release the limit of the adjusting rod, so that the limit spring drives the limit rod to move upward, thereby taking out the driving wheel, so as to solve the problem in the prior art that the traction force cannot be accurately tested and the driving wheel cannot be quickly taken out.

[0008] The purpose of the present invention can be achieved by the following technical solutions: A driving caster traction test device, comprising a test bench, an adjusting rod, an adjusting block, a fixing rod, a test rod, a punch, a protective plate, a mounting block, a support leg, a clamping ring, a fixing plate, a limit rod, a limit spring, a pull rod, a connecting rod, a telescopic spring, a dustproof plate, a connecting spring, a slider and a stabilizing block, wherein a mounting block is fixed on the top of the test bench, a fixing plate is symmetrically fixed on one side of the mounting block at the top of the test bench, and one end of the fixing plate is fixedly connected to the mounting block, and support legs are fixed at the four corners of the bottom of the test bench;

[0009] A slideway is provided on one side of the fixing plate, grooves are symmetrically provided on the top of the fixing plate, and two symmetrically provided grooves are respectively located at two ends of the top of the fixing plate, and the bottom ends of the grooves are connected to the slideway, a test rod is provided above the test bench, and two ends of the test rod are respectively slidably connected in the corresponding slideways, and a motion track is provided on the top of the test bench;

[0010] The test bench has symmetrical limit grooves inside, and limit rods and limit springs are arranged inside the limit grooves. The limit rods are slidably connected in the limit grooves, and the two ends of the limit springs are fixedly connected to the limit rods and the test bench respectively. A connecting groove is arranged inside the test bench between the two limit grooves, and a connecting rod is slidably connected in the connecting groove. The two ends of the connecting rod pass through the side walls of the connecting groove and are arranged in the corresponding limit grooves, and the ends of the connecting rod are fixedly connected to the limit rods;

[0011] A mounting groove is provided on the top of the mounting block, and a first stable groove, a second stable groove and a third stable groove are symmetrically provided on the inner walls on both sides of the mounting groove, the first stable groove is connected to the second stable groove, the second stable groove is connected to the third stable groove, and a pull ring is provided at one end of the mounting block close to the fixing plate, and the pull ring is fixedly connected to the test rod through a pull rope;

[0012] A protective plate is arranged in the mounting groove, a punch is installed on the top of the protective plate, the output shaft end of the punch is arranged in the mounting groove, a paper strip is arranged in the mounting groove, and the paper strip is fixedly connected to the pull ring, and stabilizing blocks are symmetrically fixed on both sides of the protective plate, and the stabilizing blocks are slidably connected to the first stabilizing groove, the second stabilizing groove and the third stabilizing groove.

[0013] A further technical improvement of the present invention is that a fixing rod is arranged above the test bench, the fixing rod is located between two symmetrically arranged fixing plates, and two ends of the fixing rod are respectively fixedly connected to the two symmetrically arranged fixing plates.

[0014] A further technical improvement of the present invention is that the horizontal height of the third stable groove is greater than the horizontal height of the second stable groove, and the horizontal height of the second stable groove is greater than the horizontal height of the first stable groove.

[0015] A further technical improvement of the present invention is that: an adjustment slot is provided in the test bench, a pull rod is provided in the adjustment slot, and the pull rod is movably connected in the adjustment slot, one end of the pull rod is rotatably connected to the bottom end of the limit rod through a hinge, a clamping slot is provided on the side of the adjustment slot away from the limit rod, an adjustment rod is movably connected in the clamping slot, one end of the pull rod away from the limit rod is provided in the adjustment slot, and the pull rod is rotatably connected to the adjustment rod through a hinge;

[0016] An adjustment block and a telescopic spring are arranged in the slot, the adjustment block is slidably connected in the slot, two ends of the telescopic spring are respectively fixedly connected to the test bench and the adjustment block, and one end of the adjustment block away from the telescopic spring cooperates with the adjustment rod.

[0017] A further technical improvement of the present invention is that: a closed groove is provided in the test bench, a dustproof plate is slidably connected in the closed groove, the top of the dustproof plate sequentially passes through the test bench and the side wall of the mounting block and is arranged in the mounting groove, a dustproof groove is provided at the bottom of the protective plate, the top of the dustproof plate cooperates with the dustproof groove, a connecting spring is symmetrically provided in the closed groove, and the two ends of the connecting spring are respectively fixedly connected to the test bench and the bottom end of the dustproof plate;

[0018] The closed groove and the installation groove are both symmetrically provided with sliding grooves on both side walls, and sliding blocks are symmetrically fixed on both sides of the dustproof plate, and the sliding blocks are slidably connected in the corresponding sliding grooves.

[0019] A further technical improvement of the present invention is that the specific operation method of the driving caster traction force test device comprises the following steps:

[0020] Step 1: Move the protective plate to one end of the mounting block, push the protective plate so that the protective plate moves toward the fixed plate, so that the stabilizing block first enters the third stabilizing groove, continue to push the protective plate forward, so that the protective plate moves downward under the action of its own gravity, so that the stabilizing block enters the second stabilizing groove, continue to push the protective plate, so that the stabilizing block finally enters the first stabilizing groove. Since the gravity of the protective plate itself is downward, the stabilizing block is stuck in the first stabilizing groove, thereby fixing the position of the puncher, and the dustproof plate is connected to the spring of the spring. The test rod moves upward under the action of force, so that the top of the dustproof plate enters into the dustproof groove at the bottom of the protective plate, thereby closing the installation groove, and the driving caster for testing is set on the outside of the test rod, and the test rod is moved to the top of the fixed plate above one end of the mounting block, so that the test rod is set opposite to the groove, and the self-gravity of the test rod and the driving wheel drives the test rod to move downward into the moving track, and the pull ring is connected to the test rod. A gravity block is set at the end of the test bench away from the mounting block, and the gravity block is connected to the test rod through a pull line, wherein the connecting line is passed around the fixed rod;

[0021] Step 2: Release the force on the gravity block, so that the gravity block moves downward, thereby driving the test rod to move, and the test rod drives the pull ring to move, so that the pull ring drives the paper strip in the installation groove to move, and the puncher punches holes in the paper strip while the paper strip moves. When the driving wheel moves to the end of the test bench away from the installation block and remains stationary, the test is completed;

[0022] When the adjusting rod is in the locking position, the adjusting block is pressed downward to compress the limit spring and move downward. When the adjusting rod moves into the locking position, the adjusting block pushes the limit rod upward under the elastic force of the telescopic spring, so that a limit is formed between the adjusting rod and the locking slot.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. When the present invention is in use, the protective plate is pushed so that the protective plate moves in the direction of the fixed plate, so that the stabilizing block enters the third, second and first stabilizing grooves in sequence, and under the action of the gravity of the protective plate itself, the stabilizing block is stuck in the first stabilizing groove, thereby fixing the position of the puncher, and the dustproof plate moves upward under the elastic force of the connecting spring, so that the top of the dustproof plate enters the dustproof groove at the bottom of the protective plate, thereby closing the installation groove, installing the driving caster to the motion track, connecting the pull ring with the test rod, and conducting the test, and the stabilizing block moves into the first stabilizing groove, so that a limit is formed between the first stabilizing groove and the stabilizing block, and the dustproof plate cooperates with the dustproof groove under the elastic force of the connecting spring, thereby sealing the installation groove, having a simple structure and convenient operation, saving the installation time of the installation groove, increasing the sealing effect, preventing dust from entering therein, and increasing the practical life of the device;

[0025] 2. The gravity block moves downward under the action of gravity, thereby driving the test rod to move, and the test rod drives the pull ring to move, so that the pull ring drives the paper strip in the installation slot to move, and the punch punches holes in the paper strip while the paper strip moves. When the driving wheel moves to the end of the test bench away from the installation block and remains stationary, the test is completed, and the adjustment rod is pressed downward to compress the telescopic spring, and the adjustment block moves downward. The limit between the adjustment rod and the slot is released, and the limit spring pushes the limit rod to move in the direction away from the limit spring, so that the connecting rod moves upward. As the limit rod moves upward, the adjustment rod moves in the direction away from the slot, and the limit rod pushes the test rod out of the groove to take out the test rod. When the limit rod needs to be reset, the adjusting rod is pulled in the direction of the slot, so that the limit rod compresses the limit spring and moves downward. When the adjusting rod moves into the slot, the adjusting block pushes the adjusting rod upward under the elastic force of the telescopic spring, so that a limit is formed between the adjusting rod and the slot. The driving wheel is driven to move through the gravity block, so that the driving wheel drives the paper strip to move, and the puncher punches holes in the paper strip to test the traction force. The adjusting rod squeezes the adjusting block to release the limit of the adjusting rod, so that the limit spring drives the limit rod to move upward, thereby taking out the driving wheel, increasing the accuracy of the traction force test, bringing convenience to the removal of the driving wheel, saving operation time, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0027] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the connection structure between the limit rod and the pull rod of the present invention;

[0029] Figure 3 This is a schematic diagram of the internal structure of the installation slot of the present invention;

[0030] Figure 4 This is a schematic diagram of the connection structure between the test bench and the mounting block of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the protective plate of the present invention;

[0032] Figure 6 It is a schematic diagram of the top view of the connection structure of the limit rod and the pull rod of the present invention.

[0033] In the figure: 1. test bench; 2. adjusting rod; 3. adjusting block; 4. adjusting slot; 5. fixing rod; 6. moving track; 7. slideway; 8. test rod; 9. groove; 10. puncher; 11. protective plate; 12. mounting block; 13. supporting leg; 14. snap ring; 15. fixing plate; 16. limiting rod; 17. limiting slot; 18. limiting spring; 19. pull rod; 20. connecting rod; 21. telescopic spring; 22. slot; 23. first stable slot; 24. second stable slot; 25. third stable slot; 26. dustproof plate; 27. mounting slot; 28. connecting slot; 29. ​​connecting spring; 30. closed slot; 31. slide slot; 32. slider; 33. dustproof slot; 34. stabilizing block. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-6 As shown, a driving caster traction test device includes a test bench 1, an adjusting rod 2, an adjusting block 3, an adjusting groove 4, a fixing rod 5, a moving track 6, a slide 7, a test rod 8, a groove 9, a punch 10, a protective plate 11, a mounting block 12, a supporting leg 13, a snap ring 14, a fixing plate 15, a limiting rod 16, a limiting groove 17, a limiting spring 18, a pull rod 19, a connecting rod 20, a telescopic spring 21, a snap groove 22, a first stable groove 23, a second stable groove 24, a third stable groove 25, a dustproof plate 26, a mounting groove 27, a connecting groove 28, a connecting spring Spring 29, closed groove 30, slide groove 31, slider 32, dustproof groove 33 and stabilizing block 34, the top of the test bench 1 is fixed with a mounting block 12, the top of the test bench 1 is symmetrically fixed with a fixing plate 15 on one side of the mounting block 12, and one end of the fixing plate 15 is fixedly connected to the mounting block 12, a fixing rod 5 is arranged above the test bench 1, the fixing rod 5 is located between two symmetrically arranged fixing plates 15, and the two ends of the fixing rod 5 are respectively fixedly connected to the two symmetrically arranged fixing plates 15, and the four corners of the bottom of the test bench 1 are fixed with supporting legs 13;

[0036] A motion track 6 is provided on the top of the test bench 1, a slideway 7 is provided on one side of the fixed plate 15, grooves 9 are symmetrically provided on the top of the fixed plate 15, and two symmetrically arranged grooves 9 are respectively located at the two ends of the top of the fixed plate 15, and the bottom ends of the grooves 9 are connected to the slideway 7, and a test rod 8 is provided above the test bench 1, and the two ends of the test rod 8 are respectively slidably connected in the corresponding slideways 7;

[0037] The test bench 1 has symmetrically defined limit slots 17 inside, and a limit rod 16 and a limit spring 18 are arranged inside the limit slot 17. The limit rod 16 is slidably connected inside the limit slot 17, and the two ends of the limit spring 18 are fixedly connected to the limit rod 16 and the test bench 1 respectively. A connecting slot 28 is defined inside the test bench 1 between the two limit slots 17, and a connecting rod 20 is slidably connected inside the connecting slot 28. The two ends of the connecting rod 20 penetrate the side walls of the connecting slot 28 and are arranged in the corresponding limit slots 17, and the end of the connecting rod 20 is fixedly connected to the limit rod 16;

[0038] An adjustment slot 4 is provided in the test bench 1, a pull rod 19 is provided in the adjustment slot 4, and the pull rod 19 is movably connected in the adjustment slot 4, one end of the pull rod 19 is rotatably connected to the bottom end of the limit rod 16 through a hinge, a clamping slot 22 is provided on the side of the adjustment slot 4 away from the limit rod 16, an adjustment rod 2 is movably connected in the clamping slot 22, one end of the pull rod 19 away from the limit rod 16 is provided in the adjustment slot 4, and the pull rod 19 is rotatably connected to the adjustment rod 2 through a hinge;

[0039] An adjusting block 3 and a telescopic spring 21 are arranged in the slot 22. The adjusting block 3 is slidably connected in the slot 22. Both ends of the telescopic spring 21 are fixedly connected to the test bench 1 and the adjusting block 3 respectively. One end of the adjusting block 3 away from the telescopic spring 21 cooperates with the adjusting rod 2.

[0040] The top of the mounting block 12 is provided with a mounting groove 27, and the inner walls on both sides of the mounting groove 27 are symmetrically provided with a first stable groove 23, a second stable groove 24 and a third stable groove 25, the first stable groove 23 is connected with the second stable groove 24, the second stable groove 24 is connected with the third stable groove 25, and the horizontal height of the third stable groove 25 is greater than the horizontal height of the second stable groove 24, and the horizontal height of the second stable groove 24 is greater than the horizontal height of the first stable groove 23, and a pull ring is provided at one end of the mounting block 12 close to the fixing plate 15, and the pull ring is fixedly connected to the test rod 8 through a pull rope;

[0041] A protective plate 11 is arranged in the mounting groove 27, a puncher 10 is installed on the top of the protective plate 11, the output shaft end of the puncher 10 is arranged in the mounting groove 27, a paper strip is arranged in the mounting groove 27, and the paper strip is fixedly connected to the pull ring, stabilizing blocks 34 are symmetrically fixed on both sides of the protective plate 11, and the stabilizing blocks 34 are slidably connected to the first stabilizing groove 23, the second stabilizing groove 24 and the third stabilizing groove 25, and a dustproof groove 33 is opened at the bottom of the protective plate 11;

[0042] A closed groove 30 is provided in the test bench 1, and a dustproof plate 26 is slidably connected in the closed groove 30. The top of the dustproof plate 26 passes through the test bench 1 and the side wall of the mounting block 12 in sequence and is arranged in the mounting groove 27. The top of the dustproof plate 26 cooperates with the dustproof groove 33. A connecting spring 29 is symmetrically arranged in the closed groove 30, and the two ends of the connecting spring 29 are fixedly connected to the test bench 1 and the bottom end of the dustproof plate 26 respectively;

[0043] The closed groove 30 and the installation groove 27 are both symmetrically provided with sliding grooves 31 on both side walls, and the dustproof plate 26 is symmetrically fixed with sliding blocks 32 on both sides, and the sliding blocks 32 are slidably connected in the corresponding sliding grooves 31 .

[0044] The operation method of the driving caster traction test device is as follows:

[0045] Step 1: Move the protective plate 11 to one end of the mounting block 12, push the protective plate 11, so that the protective plate 11 moves toward the direction of the fixing plate 15, so that the stabilizing block 34 first enters the third stabilizing groove 25, continue to push the protective plate 11 forward, so that the protective plate 11 moves downward under the action of its own gravity, so that the stabilizing block 34 enters the second stabilizing groove 24, continue to push the protective plate 11, so that the stabilizing block 34 finally enters the first stabilizing groove 23, because when the gravity of the guard plate itself is downward, the stabilizing block 34 is stuck in the first stabilizing groove 23, thereby fixing the position of the punch 10, and the dustproof plate 26 is connected The test rod 8 is moved upward under the elastic force of the connecting spring 29, so that the top of the dustproof plate 26 enters into the dustproof groove 33 at the bottom of the protective plate 11, thereby closing the mounting groove 27, and the driving caster for testing is set on the outside of the test rod 8, and the test rod 8 is moved to the top of the fixed plate 15 above one end of the mounting block 12, so that the test rod 8 is set opposite the groove 9, and the self-gravity of the test rod 8 and the driving wheel drives the test rod 8 to move downward into the moving track 6, and the pull ring is connected to the test rod 8. A gravity block is set at the end of the test bench 1 away from the mounting block 12, and the gravity block is connected to the test rod 8 by a pull line, wherein the connecting line is bypassed around the fixed rod 5;

[0046] Step 2: Release the force on the gravity block, so that the gravity block moves downward, thereby driving the test rod 8 to move, and the test rod 8 drives the pull ring to move, so that the pull ring drives the paper strip in the installation groove 27 to move, and the punching machine 10 punches holes in the paper strip while the paper strip moves. When the driving wheel moves to the end of the test bench 1 away from the installation block 12 and remains stationary, the test is completed;

[0047] When the limit rod 16 moves into the slot 22, the adjusting block 3 pushes the adjusting rod 2 upward under the elastic force of the telescopic spring 21, so that a limit is formed between the adjusting rod 2 and the slot 22.

[0048] Working principle: When the present invention is in use, first, the protective plate 11 is moved to one end of the mounting block 12, and the protective plate 11 is pushed so that the protective plate 11 moves toward the direction of the fixing plate 15, so that the stabilizing block 34 first enters the third stabilizing groove 25, and the protective plate 11 is continuously pushed forward so that the protective plate 11 moves downward under the action of its own gravity, so that the stabilizing block 34 enters the second stabilizing groove 24, and the protective plate 11 is continuously pushed so that the stabilizing block 34 finally enters the first stabilizing groove 23. Since the gravity of the protective plate itself is downward, the stabilizing block 34 is stuck in the first stabilizing groove 23, thereby fixing the position of the punching machine 10. The dustproof plate 26 moves upward under the elastic force of the connecting spring 29, so that the top of the dustproof plate 26 enters the dustproof groove 33 at the bottom of the protective plate 11, thereby closing the mounting groove 27, and the driving caster for testing is set on the outside of the test rod 8, and the test rod 8 is moved to the top of the fixed plate 15 above one end of the mounting block 12, so that the test rod 8 is set opposite the groove 9. The self-gravity of the test rod 8 and the driving wheel drives the test rod 8 to move downward into the moving track 6, and the pull ring is connected to the test rod 8. A gravity block is set at the end of the test bench 1 away from the mounting block 12, and the gravity block is connected to the test rod 8 by a pull line, wherein the connecting line is bypassed around the fixed rod 5; release the force on the gravity block, so that the gravity block moves downward, thereby driving the test rod 8 to move, and the test rod 8 drives the pull ring to move, so that the pull ring drives the paper strip in the installation slot 27 to move, and the punch 10 punches holes in the paper strip while the paper strip moves. When the driving wheel moves to the end of the test bench 1 away from the installation block 12 and remains stationary, the test is completed, and the adjustment rod 2 is pressed downward, so that the adjustment rod 2 generates a downward force on the adjustment block 3, thereby compressing the telescopic spring 21, and the adjustment block 3 moves downward, and the limit between the adjustment rod 2 and the slot 22 is released, and the limit spring 18 pushes the limit rod 16 to the direction away from the limit spring 18. The limit rod 16 pushes the test rod 8 out of the groove 9 to take out the test material. When the limit rod 16 needs to be reset, the adjusting rod 2 is pulled in the direction of the slot 22, so that the limit rod 16 compresses the limit spring 18 and moves downward. When the adjusting rod 2 moves into the slot 22, the adjusting block 3 pushes the adjusting rod 2 upward under the elastic force of the telescopic spring 21, so that a limit is formed between the adjusting rod 2 and the slot 22.

[0049] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A driving caster traction force test device, characterized in that: The test bench (1) comprises a test bench (1), an adjusting rod (2), an adjusting block (3), a fixing rod (5), a test rod (8), a puncher (10), a protective plate (11), a mounting block (12), a supporting leg (13), a snap ring (14), a fixing plate (15), a limiting rod (16), a limiting spring (18), a pull rod (19), a connecting rod (20), a telescopic spring (21), a dustproof plate (26), a connecting spring (29), a sliding block (32) and a stabilizing block (34), wherein the mounting block (12) is fixed on the top of the test bench (1), a fixing plate (15) is symmetrically fixed on one side of the mounting block (12) on the top of the test bench (1), and one end of the fixing plate (15) is fixedly connected to the mounting block (12), and supporting legs (13) are fixed on the four corners of the bottom of the test bench (1); A slideway (7) is provided on one side of the fixing plate (15), and grooves (9) are symmetrically provided on the top of the fixing plate (15), and two symmetrically arranged grooves (9) are respectively located at two ends of the top of the fixing plate (15), and the bottom ends of the grooves (9) are connected to the slideway (7), a test rod (8) is provided above the test bench (1), and the two ends of the test rod (8) are respectively slidably connected in the corresponding slideways (7), and a motion track (6) is provided on the top of the test bench (1); The test bench (1) has symmetrical limit grooves (17) inside, and a limit rod (16) and a limit spring (18) are arranged inside the limit groove (17), and the limit rod (16) is slidably connected in the limit groove (17), and the two ends of the limit spring (18) are fixedly connected to the limit rod (16) and the test bench (1) respectively, and a connecting groove (28) is arranged inside the test bench (1) between the two limit grooves (17), and a connecting rod (20) is slidably connected in the connecting groove (28), and the two ends of the connecting rod (20) pass through the side walls of the connecting groove (28) and are arranged in the corresponding limit groove (17), and the end of the connecting rod (20) is fixedly connected to the limit rod (16); The top of the mounting block (12) is provided with a mounting groove (27), and the inner walls on both sides of the mounting groove (27) are symmetrically provided with a first stable groove (23), a second stable groove (24) and a third stable groove (25), the first stable groove (23) is connected to the second stable groove (24), and the second stable groove (24) is connected to the third stable groove (25), and a pull ring is provided at one end of the mounting block (12) close to the fixing plate (15), and the pull ring is fixedly connected to the test rod (8) through a pull rope; A protective plate (11) is arranged in the installation groove (27), a puncher (10) is installed on the top of the protective plate (11), the output shaft end of the puncher (10) is arranged in the installation groove (27), a paper strip is arranged in the installation groove (27), and the paper strip is fixedly connected to the pull ring, and stabilizing blocks (34) are symmetrically fixed on both sides of the protective plate (11), and the stabilizing blocks (34) are slidably connected to the first stabilizing groove (23), the second stabilizing groove (24) and the third stabilizing groove (25); The test bench (1) is provided with an adjustment slot (4), a pull rod (19) is arranged in the adjustment slot (4), and the pull rod (19) is movably connected in the adjustment slot (4), one end of the pull rod (19) is rotatably connected to the bottom end of the limit rod (16) through a hinge, a clamping slot (22) is provided on the side of the adjustment slot (4) away from the limit rod (16), the adjustment rod (2) is movably connected in the clamping slot (22), one end of the pull rod (19) away from the limit rod (16) is arranged in the adjustment slot (4), and the pull rod (19) is rotatably connected to the adjustment rod (2) through a hinge; An adjusting block (3) and a telescopic spring (21) are arranged in the clamping slot (22); the adjusting block (3) is slidably connected in the clamping slot (22); two ends of the telescopic spring (21) are respectively fixedly connected to the test bench (1) and the adjusting block (3); and one end of the adjusting block (3) away from the telescopic spring (21) cooperates with the adjusting rod (2); The test bench (1) is provided with a sealed groove (30), a dustproof plate (26) is slidably connected in the sealed groove (30), the top of the dustproof plate (26) passes through the test bench (1) and the side wall of the mounting block (12) in sequence and is arranged in the mounting groove (27), the bottom of the protective plate (11) is provided with a dustproof groove (33), the top of the dustproof plate (26) and the dustproof groove (33) cooperate with each other, and a connecting spring (29) is symmetrically arranged in the sealed groove (30), and the two ends of the connecting spring (29) are respectively fixedly connected to the test bench (1) and the bottom of the dustproof plate (26); The closed groove (30) and the installation groove (27) are both symmetrically provided with sliding grooves (31), and the dustproof plate (26) is symmetrically fixed with sliding blocks (32) on both sides, and the sliding blocks (32) are slidably connected in the corresponding sliding grooves (31).

2. A driving caster traction test device according to claim 1, characterized in that: A fixing rod (5) is arranged above the test bench (1), the fixing rod (5) is located between two symmetrically arranged fixing plates (15), and two ends of the fixing rod (5) are respectively fixedly connected to the two symmetrically arranged fixing plates (15).

3. A driving caster traction test device according to claim 1, characterized in that: The level of the third stable groove (25) is greater than the level of the second stable groove (24), and the level of the second stable groove (24) is greater than the level of the first stable groove (23).

4. A driving caster traction test device according to claim 1, characterized in that: The specific operation method of the driving caster traction force test device comprises the following steps: Step 1: Move the protective plate (11) to one end of the mounting block (12), push the protective plate (11), so that the protective plate (11) moves toward the fixing plate (15), so that the stabilizing block (34) first enters the third stabilizing groove (25), continue to push the protective plate (11) forward, so that the protective plate (11) moves downward under the action of its own gravity, so that the stabilizing block (34) enters the second stabilizing groove (24), continue to push the protective plate (11), so that the stabilizing block (34) finally enters the first stabilizing groove (23), because the gravity of the protective plate itself is downward, the stabilizing block (34) is stuck in the first stabilizing groove (23), thereby fixing the position of the punching machine (10), and the dustproof plate (26) is connected to the The test rod (8) moves upward under the elastic force of the spring (29), so that the top of the dustproof plate (26) enters into the dustproof groove (33) at the bottom of the protective plate (11), thereby closing the installation groove (27), and the driving caster for testing is set on the outside of the test rod (8), and the test rod (8) is moved to the top of the fixed plate (15) above one end of the mounting block (12), so that the test rod (8) is set opposite to the groove (9), and the self-weight of the test rod (8) and the driving wheel drives the test rod (8) to move downward into the moving track (6), and the pull ring is connected to the test rod (8), and a gravity block is set at the end of the test bench (1) away from the mounting block (12), and the gravity block is connected to the test rod (8) by a pull line, wherein the connecting line is passed around the fixed rod (5); Step 2: Release the force applied to the gravity block, so that the gravity block moves downward, thereby driving the test rod (8) to move, and the test rod (8) drives the pull ring to move, so that the pull ring drives the paper strip in the installation groove (27) to move, and the punching machine (10) punches holes in the paper strip while the paper strip moves. When the driving wheel moves to the end of the test bench (1) away from the installation block (12) and remains stationary, the test is completed; Step 3: Press the adjusting rod (2) downward, so that the adjusting rod (2) exerts a downward force on the adjusting block (3), thereby compressing the telescopic spring (21), and the adjusting block (3) moves downward. The limit between the adjusting rod (2) and the clamping groove (22) is released, and the limit spring (18) pushes the limit rod (16) to move in a direction away from the limit spring (18), so that the connecting rod (20) moves upward together. Since the two ends of the pull rod (19) are respectively connected to the connecting rod (20) and the adjusting rod (2) through hinges, the adjusting rod (2) moves with the limit rod ( When the limit rod (16) moves upward, it moves in a direction away from the slot (22), and the limit rod (16) pushes the test rod (8) out of the groove (9) to remove the test material. When it is necessary to reset the limit rod (16), the adjustment rod (2) is pulled in the direction of the slot (22), so that the limit rod (16) compresses the limit spring (18) and moves downward. When the adjustment rod (2) moves into the slot (22), the adjustment block (3) pushes the adjustment rod (2) upward under the elastic force of the telescopic spring (21), so that a limit is formed between the adjustment rod (2) and the slot (22).

Images