Tensile strength testing equipment for automobile rubber bushing production

Abstract

The invention discloses tensile strength testing equipment for automobile rubber bushing production, which comprises symmetrically arranged adjusting discs, and outer wall clamping mechanisms are arranged at the middle parts of the sides, far away from each other, of the two adjusting discs; a cylinder is connected to the middle of the side, away from the outer wall clamping mechanism, of the adjusting disc, an air cylinder is arranged on the side, close to the cylinder, of the adjusting disc and corresponds to the interior of the cylinder, the output end of the air cylinder is connected with a moving block, and four evenly-arranged second clamping plates are arranged on the outer side of the cylinder in a circumferential array mode. Under the cooperation of the connecting rods and the square blocks, the four sliding blocks synchronously move towards the middle of the adjusting disc, the sliding blocks drive the first clamping plate to get close to the outer wall of the automobile rubber bushing and make contact with the outer wall of the automobile rubber bushing in the moving process, and under the cooperation of the first clamping plate and the second clamping plate, the first clamping plate and the second clamping plate make contact with the outer wall of the automobile rubber bushing. The inner wall and the outer wall of the automobile rubber bushing can be clamped and fixed, and the automobile rubber bushing is not deformed, so that the tensile strength of the automobile rubber bushing can be accurately measured.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile rubber bushing production, and particularly relates to a tensile strength testing device for automobile rubber bushing production. Background Art

[0002] Automotive rubber bushings are a key component widely used in automotive chassis, suspension systems, engine mounts and other parts. They are mainly used to reduce shock and noise, cushion vibrations, isolate impacts, and improve vehicle comfort, handling and durability.

[0003] The automotive rubber bushing tensile strength tester is a professional instrument used to test the bearing capacity of rubber bushings under tensile loads. It applies tension and records data by simulating actual working conditions, ultimately outputting mechanical performance indicators such as tensile strength and elongation at break, providing a basis for product quality control and material optimization.

[0004] Patent application with patent publication number CN118243487A discloses an auxiliary matching structure for automobile rubber bushing tensile strength testing equipment, which is not only convenient for clamping and fixing the rubber bushing, but also simple to operate, and convenient for subsequent compressive strength testing operations; although the device can perform tensile strength testing on automobile rubber bushings, in actual use, the outer wall of the automobile rubber bushing is clamped by multiple clamping plates close to each other. The tensile strength test is performed after the clamping plates have completed clamping the automobile rubber bushing. However, the automobile rubber bushing is not solid, and the middle part of the automobile rubber bushing is hollow. Clamping the outer wall of the automobile rubber bushing only by the clamping plates will deform the automobile rubber bushing, so that accurate data cannot be measured when the tensile strength test of the automobile rubber bushing is performed. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem in the prior art that accurate data on the tensile strength of automobile rubber bushings cannot be measured, and to provide a tensile strength testing device for the production of automobile rubber bushings.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A tensile strength testing device for the production of automotive rubber bushings, comprising symmetrically arranged adjusting disks, wherein the middle parts of the two adjusting disks on the side away from each other are each provided with an outer wall clamping mechanism; a cylinder is connected to the middle part of the side of the adjusting disk away from the outer wall clamping mechanism, a cylinder is provided inside the cylinder on the side of the adjusting disk close to the cylinder corresponding to the side of the cylinder, a moving block is connected to the output end of the cylinder, and four evenly arranged second clamping plates are provided in a circumferential array on the outer side of the cylinder; four evenly arranged second connecting blocks are provided in a circumferential array at the position corresponding to the second clamping plate on the outer side of the moving block, a first connecting block is connected to the position of the second clamping plate corresponding to the second connecting block, and a first connecting rod is rotatably connected between the first connecting block and the second connecting block; four evenly arranged third connecting blocks are provided in a circumferential array at the middle part of the outer side of the cylinder and at the position away from the second connecting block, a fourth connecting block is provided at the position of the second clamping plate corresponding to the third connecting block, and a second connecting rod is rotatably connected between the third connecting block and the fourth connecting block.

[0007] Preferably, the outer wall clamping mechanism includes a square block, which is rotatably connected to the middle of the adjusting disk. The four corners of the square block are rotatably connected to connecting rods, and the ends of the connecting rods away from the square block are rotatably connected to sliders, and the side of the slider away from the connecting rod is connected to the first splint.

[0008] Preferably, the adjustment disk is provided with four evenly arranged sliding grooves in a circumferential array corresponding to the position of the slider, and the slider is slidably connected in the sliding grooves.

[0009] Preferably, the position of the sliding groove on the side of the slider is connected to a symmetrically arranged sliding rod, the position of the adjusting disk corresponding to the sliding rod is provided with a symmetrically arranged sliding rail, and the sliding rod is slidably connected in the sliding rail.

[0010] Preferably, a rack is connected to one side of the slider away from the first clamping plate, a gear is meshed on the outer side of the rack, and the middle part of the side of the gear away from the adjusting disk is connected to the first motor.

[0011] Preferably, a movable plate is connected below the two adjusting disks, a frame is provided below the movable plate, the movable plate is movably arranged in the frame, a reciprocating screw is rotatably connected to the position corresponding to the two movable plates inside the frame, the movable plate is threadedly connected to the reciprocating screw, and one end of the reciprocating screw passes through the frame and is connected to the second motor fixed to the frame.

[0012] Preferably, a support plate is connected to the middle part of the upper part of the body, a sleeve plate is connected to the middle part of the upper surface of the support plate, a lifting plate is slidably connected inside the sleeve plate, and a plurality of evenly arranged second springs are connected between the lifting plate and the support plate.

[0013] Preferably, a second slot is provided above the lifting plate at a position corresponding to the insertion rod, and the second slot is used in conjunction with the insertion rod.

[0014] Preferably, an outer ring is connected to a position on the outer side of the insertion rod corresponding to the inner side of the shell, and a third spring is connected between the outer ring and the shell.

[0015] Beneficial effects of the present invention: When the tensile strength of the automobile rubber bushing is tested, the automobile rubber bushing is placed on the placement plate. After the placement is completed, the second motor is started, and the second motor drives the bidirectional screw rod to rotate. Under the action of the bidirectional screw rod, the two moving plates are driven to approach each other, thereby driving the two adjustment plates to approach each other. After the second clamping plate corresponds to the automobile rubber bushing, the bidirectional screw rod is stopped from rotating. After the bidirectional screw rod stops rotating, the cylinder is started, and the cylinder drives the moving block to approach the middle of the automobile rubber bushing. During the movement of the moving block, the first connecting rod and the second connecting rod are driven to rotate, thereby driving the four second clamping plates to move to a position away from the cylinder. After moving, the second clamping plates will approach the inner wall of the automobile rubber bushing and contact the automobile. The first motor is started after the second plywood contacts the inner wall of the automobile rubber bushing, and the first motor drives the gear to rotate. The rotation of the gear drives the rack to move toward the middle of the adjusting disk. During the movement, the rack drives one of the sliders to move toward the middle of the adjusting disk. Under the cooperation of the connecting rod and the square block, the four sliders are synchronously moved toward the middle of the adjusting disk. During the movement, the slider drives the first plywood to approach the outer wall of the automobile rubber bushing and contact the outer wall of the automobile rubber bushing. Under the cooperation of the first plywood and the second plywood, the inner wall and the outer wall of the automobile rubber bushing can be clamped and fixed without deforming the automobile rubber bushing, thereby accurately measuring the tensile strength of the automobile rubber bushing. After the inner wall and the outer wall of the automobile rubber bushing are clamped and fixed, the pulling plate is pulled to move the insertion rod out of the first slot and into the shell. In the process of entering the shell, the insertion rod will drive the outer ring to move, and the movement of the outer ring will squeeze the third spring. The third spring will contract under the squeezing and store the restoring force. After the insertion rod enters the shell, the lifting plate loses its fixation, and the placement plate is pressed downward to make the lifting plate drop into the sleeve plate. After the lower surface of the placement plate contacts the upper surface of the sleeve plate, the second slot will correspond to the insertion rod, and the pulling plate is slowly released. Under the action of the restoring force of the third spring, the insertion rod will reset and be inserted into the second slot, thereby limiting the position of the lifting plate and the sleeve plate, avoiding the lifting plate and the sleeve plate from affecting the test when the tensile strength test of the automobile rubber bushing is performed; After the lifting plate is lowered, the second motor is started again. The second motor drives the bidirectional screw to rotate, so that the two moving plates move away from each other, thereby driving the two adjusting plates away from each other, and the tensile strength of the automobile rubber bushing can be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 It is a perspective view of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 yes Figure 2 A partial enlarged view of point A in the middle; Figure 4 It is a three-dimensional view of the second splint in the present invention; Figure 5 It is a three-dimensional view of the first splint in the present invention; Figure 6 It is a three-dimensional diagram of the adjustment disk of the present invention; Figure 7 It is a three-dimensional diagram of the slider in the present invention; Figure 8 It is a cross-sectional view of the sleeve plate in the present invention.

[0018] In the figure: 1, adjustment disk; 2, rack; 3, cylinder; 4, moving plate; 5, support plate; 6, first slot; 11. Square block; 12. Connecting rod; 13. Slider; 14. Slide groove; 15. First splint; 16. Slide rod; 17. Slide rail; 21. Gear; 22. First motor; 23. Mounting plate; 31. Cylinder; 32. Moving block; 33. Second clamping plate; 34. First connecting block; 35. Second connecting block; 36. First connecting rod; 37. Third connecting block; 38. Fourth connecting block; 39. Second connecting rod; 41. Frame; 42. Bidirectional screw; 43. Second motor; 44. Bottom plate; 51. Sleeve plate; 52. Lifting plate; 53. Second spring; 54. Placement plate; 55. Housing; 56. Insertion rod; 57. External ring; 58. Third spring; 59. Pull plate; 61. Second slot. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1 - Figure 8 As shown, a tensile strength testing device for automobile rubber bushing production includes symmetrically arranged adjustment disks 1, which are used to assist in adjusting the distance between the first clamping plates 15.

[0021] An outer wall clamping mechanism is provided at the middle of the two adjusting disks 1 on the side away from each other. The outer wall clamping mechanism is used to clamp and fix the outer wall of the automobile rubber bushing.

[0022] The outer wall clamping mechanism includes a square block 11 , which is rotatably connected to the middle of the adjustment disk 1 . The square block 11 is used to limit the position of the connecting rod 12 .

[0023] The four corners of the square block 11 are rotatably connected to connecting rods 12 , which are used to adjust the position of the first clamping plate 15 .

[0024] The end of the connecting rod 12 away from the square block 11 is rotatably connected to the slider 13. The adjusting disk 1 is provided with four evenly arranged sliding grooves 14 in a circular array corresponding to the position of the slider 13. The slider 13 is slidably connected in the sliding groove 14. The movement direction of the slider 13 can be determined by the cooperation of the sliding groove 14.

[0025] The position of the slide groove 14 on the side of the slider 13 is connected to a symmetrically arranged slide rod 16, and the position of the adjustment disk 1 corresponding to the slide rod 16 is provided with a symmetrically arranged slide rail 17. The slide rod 16 is slidably connected in the slide rail 17. The position of the slider 13 can be limited by the cooperation between the slide rod 16 and the slide rail 17.

[0026] A first clamping plate 15 is connected to a side of the slider 13 away from the connecting rod 12 . The first clamping plate 15 is used to clamp and fix the outer wall of the automobile rubber bushing.

[0027] One side of the sliders 13 away from the first splint 15 is connected to a rack 2, and a gear 21 is engaged with the outer side of the rack 2. Through the cooperation between the gear 21 and the rack 2, when the gear 21 rotates, the rack 2 is driven to move, thereby driving the slider 13 to move.

[0028] A first motor 22 is connected to the middle of the side of the gear 21 away from the adjusting disk 1 . The first motor 22 is used to drive the gear 21 to rotate.

[0029] A mounting plate 23 is connected to the position of the adjustment disk 1 corresponding to the first motor 22 . The first motor 22 is mounted on the mounting plate 23 . The mounting plate 23 is used to support and fix the position of the first motor 22 .

[0030] A cylinder 3 is connected to the middle of the regulating disk 1 on the side away from the outer wall clamping mechanism. The cylinder 3 is used to protect the cylinder 31 and also assists in the connection of the second clamping plate 33 .

[0031] A cylinder 31 is provided on one side of the adjusting disk 1 close to the cylinder 3 and corresponding to the interior of the cylinder 3 . The cylinder 31 is used to adjust the position of the second clamping plate 33 .

[0032] The output end of the cylinder 31 is connected to a moving block 32 . The moving block 32 is used to rotate the first connecting rod 36 and the second connecting rod 39 , thereby adjusting the position of the second clamping plate 33 .

[0033] Four evenly arranged second clamping plates 33 are arranged in an array on the outer circumference of the cylinder 3 . The second clamping plates 33 are used to clamp and fix the inner wall of the automobile rubber bushing.

[0034] Four evenly arranged second connecting blocks 35 are provided in a circular array on the outside of the moving block 32 corresponding to the position of the second splint 33. The positions of the second splint 33 corresponding to the second connecting blocks 35 are all connected to the first connecting blocks 34. A first connecting rod 36 is rotatably connected between the first connecting block 34 and the second connecting block 35. The first connecting rod 36 is used to support the second splint 33 and adjust the position of the second splint 33 at the same time.

[0035] Four evenly arranged third connecting blocks 37 are provided in a circumferential array in the middle of the outer side of the cylinder 3 and at a position away from the second connecting block 35. Fourth connecting blocks 38 are provided at the positions of the second splint 33 corresponding to the third connecting blocks 37. A second connecting rod 39 is rotatably connected between the third connecting block 37 and the fourth connecting block 38. The second connecting rod 39 is used to support the second splint 33 and adjust the position of the second splint 33 at the same time.

[0036] A movable plate 4 is connected to the bottom of each of the two adjustment disks 1. A frame 41 is provided below the movable plate 4. The movable plate 4 is movably provided in the frame 41. The frame 41 is used to limit the moving position of the movable plate 4 to prevent the movable plate 4 from deflecting during movement.

[0037] A reciprocating screw is rotatably connected to the position of the two movable plates 4 inside the frame 41. The movable plates 4 are threadedly connected to the reciprocating screw. The reciprocating screw is used to adjust the position of the movable plates 4 so that the two movable plates 4 move closer to or farther away from each other.

[0038] One end of the reciprocating screw passes through the frame 41 and is connected to a second motor 43 fixed to the frame 41 . The second motor 43 is used to drive the reciprocating screw to rotate.

[0039] A bottom plate 44 is connected to the lower surface of the frame 41 , and the bottom plate 44 is used to support the frame 41 .

[0040] A support plate 5 is connected to the middle of the upper portion of the frame 41 , and the support plate 5 is used to support the sleeve plate 51 .

[0041] A sleeve plate 51 is connected to the middle of the upper surface of the support plate 5 , and a lifting plate 52 is slidably connected inside the sleeve plate 51 . The sleeve plate 51 is used to accommodate the lifting plate 52 , and the lifting plate 52 is used to adjust the position of the placement plate 54 .

[0042] A plurality of evenly arranged second springs 53 are connected between the lifting plate 52 and the support plate 5 . The second springs 53 are used to reset the lifting plate 52 .

[0043] A shell 55 is connected to the upper side of the sleeve plate 51 , and an insertion rod 56 is slidably connected inside the shell 55 . The shell 55 is used to accommodate the insertion rod 56 , and the insertion rod 56 is used to fix the position of the lifting plate 52 .

[0044] A first slot 6 is provided at the position of the sleeve plate 51 and the lifting plate 52 corresponding to the insertion rod 56. The insertion rod 56 is used in conjunction with the first slot 6. The insertion rod 56 cooperates with the first slot 6 and the insertion rod 56 is inserted into the first slot 6 to limit the position of the lifting plate 52.

[0045] A second slot 61 is provided above the lifting plate 52 at a position corresponding to the insertion rod 56 . The second slot 61 cooperates with the insertion rod 56 . The insertion rod 56 cooperates with the second slot 61 . When the insertion rod 56 is inserted into the second slot 61 , the position of the lifting plate 52 can be limited.

[0046] An external ring 57 is connected to the outer side of the insertion rod 56 at a position corresponding to the inside of the shell 55 , and a third spring 58 is connected between the external ring 57 and the shell 55 . The third spring 58 is used to reset the external ring 57 and the insertion rod 56 .

[0047] One end of the insertion rod 56 away from the lifting plate 52 passes through the shell 55 and is connected to a pull plate 59 provided on the outside of the shell 55 . The pull plate 59 is used to pull the insertion rod 56 into the shell 55 .

[0048] Working principle: When the tensile strength of the automobile rubber bushing is tested, the automobile rubber bushing is placed on the placement plate 54. After the placement is completed, the second motor 43 is started. The second motor 43 drives the bidirectional screw rod 42 to rotate. Under the action of the bidirectional screw rod 42, the two movable plates 4 are driven to approach each other, thereby driving the two adjustment plates to approach each other. After the second clamping plate 33 corresponds to the automobile rubber bushing, the bidirectional screw rod 42 is stopped from rotating. After the bidirectional screw rod 42 stops rotating, the cylinder 31 is started. The cylinder 31 drives the moving block 32 to approach the middle of the automobile rubber bushing. During the movement of the moving block 32, the first connecting rod 36 and the second connecting rod 39 are driven to rotate, thereby driving the four second clamping plates 33 to move to a position away from the cylinder 3. After moving, the second clamping plates 33 will approach the inner wall of the automobile rubber bushing and Contacting the inner wall of the automobile rubber bushing, after the second clamping plate 33 contacts the inner wall of the automobile rubber bushing, the first motor 22 is started, and the first motor 22 drives the gear 21 to rotate. The rotation of the gear 21 drives the rack 2 to move toward the middle of the adjusting disk 1. During the movement, the rack 2 drives one of the sliders 13 to move toward the middle of the adjusting disk 1. Under the cooperation of the connecting rod 12 and the square block 11, the four sliders 13 are synchronously moved toward the middle of the adjusting disk 1. During the movement, the slider 13 drives the first clamping plate 15 to approach the outer wall of the automobile rubber bushing and contact the outer wall of the automobile rubber bushing. Under the cooperation of the first clamping plate 15 and the second clamping plate 33, the inner wall and the outer wall of the automobile rubber bushing can be clamped and fixed without deforming the automobile rubber bushing, thereby accurately measuring the tensile strength of the automobile rubber bushing. After the inner wall and the outer wall of the automobile rubber bushing are clamped and fixed, the pulling plate 59 is pulled to move the insertion rod 56 out of the first slot 6 and into the shell 55. In the process of entering the shell 55, the insertion rod 56 drives the outer ring 57 to move. The movement of the outer ring 57 squeezes the third spring 58. The third spring 58 contracts under the squeezing and stores the restoring force. After the insertion rod 56 enters the shell 55, the lifting plate 52 loses its fixation and presses the placement plate 54 downward to make the lifting plate 52 descend into the sleeve plate 51. After the lower surface of the placement plate 54 contacts the upper surface of the sleeve plate 51, the second slot 61 corresponds to the insertion rod 56. The pulling plate 59 is slowly released. Under the action of the restoring force of the third spring 58, the insertion rod 56 is reset and inserted into the second slot 61, thereby limiting the position of the lifting plate 52 and the sleeve plate 51, avoiding the lifting plate 52 and the sleeve plate 51 from affecting the test when the tensile strength test of the automobile rubber bushing is performed; After the lifting plate 52 descends, the second motor 43 is started again, and the second motor 43 drives the bidirectional screw rod 42 to rotate, so that the two movable plates 4 move away from each other, thereby driving the two adjustment plates away from each other, and the tensile strength of the automobile rubber bushing can be tested.

[0049] It should be noted that, in this document, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0050] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A tensile strength testing device for automobile rubber bushing production, comprising symmetrically arranged adjustment disks (1), characterized in that: An outer wall clamping mechanism is provided at the middle of the two adjusting disks (1) on the side away from each other; The middle portion of the regulating disk (1) away from the outer wall clamping mechanism is connected to a cylinder (3); a cylinder (31) is provided on the side of the regulating disk (1) close to the cylinder (3) corresponding to the interior of the cylinder (3); a moving block (32) is connected to the output end of the cylinder (31); and four evenly arranged second clamping plates (33) are provided in an array on the outer circumference of the cylinder (3); Four evenly arranged second connecting blocks (35) are provided in a circumferential array on the outer side of the moving block (32) at positions corresponding to the second clamping plate (33); positions of the second clamping plate (33) corresponding to the second connecting blocks (35) are all connected to first connecting blocks (34); and a first connecting rod (36) is rotatably connected between the first connecting block (34) and the second connecting block (35); Four evenly arranged third connecting blocks (37) are provided in a circumferential array at the middle portion of the outer side of the cylinder (3) and at a position away from the second connecting block (35); a fourth connecting block (38) is provided at a position of the second splint (33) corresponding to the third connecting block (37); and a second connecting rod (39) is rotatably connected between the third connecting block (37) and the fourth connecting block (38).

2. The tensile strength testing equipment for automobile rubber bushing production according to claim 1, characterized in that: The outer wall clamping mechanism comprises a square block (11), the square block (11) is rotatably connected to the middle of the adjustment disk (1), the four corners of the square block (11) are rotatably connected to connecting rods (12), one end of the connecting rod (12) away from the square block (11) is rotatably connected to a slider (13), and the side of the slider (13) away from the connecting rod (12) is connected to a first clamping plate (15).

3. The tensile strength testing equipment for automobile rubber bushing production according to claim 2, characterized in that: The regulating disk (1) is provided with four evenly arranged sliding grooves (14) in a circumferential array corresponding to the position of the slider (13), and the slider (13) is slidably connected in the sliding grooves (14).

4. The tensile strength testing equipment for automobile rubber bushing production according to claim 3, characterized in that: The position of the slide groove (14) on the side of the slider (13) is connected to a symmetrically arranged slide rod (16), and the position of the adjustment disk (1) corresponding to the slide rod (16) is provided with a symmetrically arranged slide rail (17), and the slide rod (16) is slidably connected in the slide rail (17).

5. The tensile strength testing equipment for automobile rubber bushing production according to claim 4, characterized in that: A rack (2) is connected to one side of the slider (13) away from the first clamping plate (15), a gear (21) is meshed on the outside of the rack (2), and a first motor (22) is connected to the middle of the side of the gear (21) away from the adjustment disk (1).

6. The tensile strength testing equipment for automobile rubber bushing production according to claim 5, characterized in that: A movable plate (4) is connected below the two adjusting disks (1), a frame (41) is provided below the movable plate (4), the movable plate (4) is movably provided in the frame (41), a reciprocating screw rod is rotatably connected inside the frame (41) corresponding to the position of the two movable plates (4), the movable plate (4) is threadedly connected to the reciprocating screw rod, and one end of the reciprocating screw rod passes through the frame (41) and is connected to a second motor (43) fixed to the frame (41).

7. The tensile strength testing equipment for automobile rubber bushing production according to claim 6, characterized in that: A support plate (5) is connected to the middle portion of the upper portion of the frame (41), a sleeve plate (51) is connected to the middle portion of the upper surface of the support plate (5), a lifting plate (52) is slidably connected inside the sleeve plate (51), and a plurality of evenly arranged second springs (53) are connected between the lifting plate (52) and the support plate (5).

8. The tensile strength testing equipment for automobile rubber bushing production according to claim 7, characterized in that: A housing (55) is connected to the upper side of the sleeve plate (51), and an insertion rod (56) is slidably connected inside the sleeve plate (51). A first slot (6) is provided at a position corresponding to the insertion rod (56) on the sleeve plate (51) and the lifting plate (52), and the insertion rod (56) cooperates with the first slot (6).

9. The tensile strength testing equipment for automobile rubber bushing production according to claim 8, characterized in that: A second slot (61) is provided above the lifting plate (52) at a position corresponding to the insertion rod (56), and the second slot (61) is used in conjunction with the insertion rod (56).

10. The tensile strength testing equipment for automobile rubber bushing production according to claim 9, characterized in that: An outer ring (57) is connected to a position on the outside of the insertion rod (56) corresponding to the inside of the housing (55), and a third spring (58) is connected between the outer ring (57) and the housing (55).

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