A rubber solvent resistance fatigue tester

Abstract

The present invention provides a rubber solvent resistance fatigue tester, which relates to the field of fatigue testing technology, including a workbench, a vertical plate fixedly provided on the workbench, a first lifting mechanism provided on the rear side of the vertical plate, an L-shaped connecting rod provided on the upper side of the first lifting mechanism, a first clamping assembly and a force sensor provided on the L-shaped connecting rod, a protruding plate symmetrically provided on the front side of the vertical plate, a concave plate provided on the protruding plate, a second clamping assembly provided on the concave plate, a second lifting mechanism also provided on the front side of the vertical plate, a third clamping assembly provided on the second lifting mechanism, the third clamping assembly being used to clamp a measuring cup, a solvent-resistant component provided in the measuring cup, and the first clamping assembly and the second clamping assembly being used to clamp a rubber sample. The present invention has a simple structure, is easy to use, and has strong operability. By providing a shell, the safety of the device can be effectively improved. By providing a force sensor, the force applied to the rubber sample when it is broken can be more accurately detected, thereby better adjusting the production process and proportioning.

Description

Technical Field

[0001] The invention relates to the technical field of fatigue testing, in particular to a rubber solvent resistance fatigue tester. Background Art

[0002] As an irreplaceable elastic material, rubber has been used for over 160 years and is widely used in national defense and economic development. Rubber is not only an indispensable substance in life, but also a high-performance and functional material necessary for the development of high-tech. To achieve vibration and noise reduction, flexibility and wear resistance, rubber is often compounded with metal to form elastic components, which are widely used in many high-tech fields. Rubber components usually operate under cyclic stress, and the fatigue fracture performance of the rubber material often determines the fatigue life of the component.

[0003] There's no standardized method for evaluating the service life of rubber gloves. Existing alcohol tests can indirectly reflect certain conditions, but variations in inflation volume, spray location, and spray volume prevent accurate quantification of the wearability of rubber gloves. The wearability of rubber gloves during use is actually determined by fatigue aging (repeated stress) caused by contact with sweat (solvents), meaning fatigue life under solvent exposure.

[0004] When fatigue testing and evaluation are currently performed on the market, rubber gloves have long test times, short cyclic stretching distances that are difficult to damage, and are tested without solvent contact. These tests are insufficient to scientifically evaluate the service life of rubber gloves. Therefore, how to evaluate the fatigue life of rubber gloves in a solvent-immersion state based on actual conditions is an urgent problem that needs to be solved. It also provides a standardized testing method for the company's R&D and facilitates the company to better adjust its production process and ratio. Summary of the Invention

[0005] The present invention provides a rubber solvent resistance fatigue tester to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention discloses a rubber solvent resistance fatigue tester, including a workbench, a shell and a vertical plate are fixed on the workbench, a first lifting mechanism is provided on the rear side of the vertical plate, an L-shaped connecting rod is provided on the upper side of the first lifting mechanism, a first clamping assembly and a force sensor are provided on the L-shaped connecting rod, an extending plate is symmetrically provided on the front side of the vertical plate, a concave plate is provided on the extending plate, a second clamping assembly is provided on the concave plate, a second lifting mechanism is also provided on the front side of the vertical plate, a third clamping assembly is provided on the second lifting mechanism, the third clamping assembly is used to clamp a holding cup, a solvent-resistant material is provided in the holding cup, and the first clamping assembly and the second clamping assembly are used to clamp the rubber sample.

[0007] Preferably, the lower end of the vertical section of the L-shaped connecting rod is connected to the first lifting mechanism, a force sensor is fixed on the lower surface of the horizontal section of the L-shaped connecting rod, a first clamping assembly is fixed on the lower end of the force sensor, and a rubber sample is clamped on the first clamping assembly.

[0008] Preferably, the second lifting mechanism includes two left-right symmetrical fixing rods and a fixing plate, the fixing rod is fixedly arranged on the upper surface of the workbench, and the fixing plate is provided with two left-right symmetrical third pulleys and two left-right symmetrical fourth pulleys, the third pulley and the fourth pulley are both rotatably connected to the fixing plate, a third motor is installed on the upper side of the third pulley on the left, the lower output end of the third motor is fixedly connected to the rotating shaft, the rotating shaft is fixedly connected to the center position of the third pulley, and the lower end of the rotating shaft is rotatably connected to the fixing plate, a second belt is wound around the third pulley and the fourth pulley, and a nut is fixedly provided at the center position of the fourth pulley, a thread is provided on the fixing rod, and the fixing rod passes through the fixing plate upward, and the nut is threadedly connected to the fixing rod.

[0009] Preferably, the third clamping assembly includes a fourth motor, which is fixedly arranged at the central position of the fixed plate, and the upper output end of the fourth motor is fixedly connected to the rotating shaft, the upper end of the rotating shaft is fixedly connected to the turntable, the upper end of the turntable is rotatably connected to the clamping disk, and a plurality of support rods are fixedly provided on the lower surface of the clamping disk, the support rods are fixedly arranged on the fixed plate, and a plurality of connecting rods are hinged on the turntable, the other end of the connecting rod is hinged to a slider, and a plurality of through grooves are provided on the clamping disk, the slider is slidably arranged in the through groove, and the upper end of the slider is fixedly connected to the clamping rod, and the clamping rod clamps the cup on one side close to the center of the clamping disk.

[0010] Preferably, the extending plate is fixedly arranged on the front side of the vertical plate, and a concave plate is detachably installed on the lower side of the extending plate, the concave plate includes a transversely arranged mounting plate, vertically arranged connecting plates are fixedly arranged at the left and right ends of the mounting plate, a transversely arranged horizontal plate is fixedly arranged on the upper end of the connecting plate, the horizontal plate is detachably connected to the lower side of the extending plate, and a second clamping assembly is provided at the center position of the mounting plate, and the second clamping assembly clamps the rubber sample.

[0011] Preferably, the clamping plate is provided with two front-to-back symmetrical grooves, a splint is slidingly provided in the groove, a buffer spring and a first airbag are fixed on the side where the splints are close to each other, the other end of the buffer spring is fixed on the inner wall of the side where the grooves are close to each other, a first trapezoidal block is fixed on the side where the splints are away from each other, two front-to-back symmetrical driving rods are fixed on the L-shaped connecting rod, a second trapezoidal block is fixed on the side where the driving rods are close to each other, and the second trapezoidal block cooperates with the first trapezoidal block.

[0012] Preferably, guard plates are hinged on the front and rear sides of the holding cup, the lower ends of the guard plates are fixedly connected to the movable plates, the side of the movable plates close to each other is fixedly connected to the reset spring, the other end of the reset spring is fixedly connected to the side wall of the splints away from each other, and a second airbag is also fixedly provided on the side of the movable plates close to each other, the other end of the second airbag is fixedly connected to the side wall of the splints away from each other, a pipe is provided in the splint, and the pipe connects the first airbag and the second airbag.

[0013] Preferably, glass doors are symmetrically provided on the front side wall of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a schematic diagram of the appearance of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the second lifting mechanism of the present invention;

[0018] Figure 4 Schematic diagram of the structure of the concave plate of the present invention;

[0019] Figure 5 A bottom view of the clamping plate of the present invention;

[0020] Figure 6 It is a structural schematic diagram of the guard plate of the present invention;

[0021] Figure 7 For the present invention Figure 8 A magnified view of point A;

[0022] Figure 8 It is a top view of the clamping plate of the present invention.

[0023] Figure: 1. Workbench; 2. Housing; 3. First lifting mechanism; 4. Extension plate; 5. L-shaped connecting rod; 6. First clamping assembly; 7. Vertical plate; 8. Concave plate; 801. Mounting plate; 802. Connecting plate; 803. Horizontal plate; 9. Cup holder; 10. Fixing plate; 11. Clamping plate; 12. Fixing rod; 13. Groove; 14. Second belt; 15. Pipe; 16. First airbag; 17. Return spring ; 18. Second airbag; 19. Guard plate; 20. Moving plate; 21. Buffer spring; 24. Clamping rod; 25. Third motor; 26. Through slot; 27. Third pulley; 28. Fourth pulley; 29. Second clamping assembly; 30. Rubber sample; 31. Connecting rod; 32. Support rod; 33. Slider; 34. Turntable; 35. Driving rod; 36. Second trapezoidal block; 37. Clamping plate; 38. First trapezoidal block. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0025] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] Example 1

[0027] The embodiment of the present invention provides a rubber solvent resistance fatigue tester, such as Figure 1-2 As shown in , 7 , it includes a workbench 1, on which a shell 2 and a vertical plate 7 are fixedly provided, a first lifting mechanism 3 is provided on the rear side of the vertical plate 7, an L-shaped connecting rod 5 is provided on the upper side of the first lifting mechanism 3, a first clamping assembly 6 and a force sensor are provided on the L-shaped connecting rod 5, an extension plate 4 is symmetrically provided on the front side of the vertical plate 7, a concave plate 8 is provided on the extension plate 4, a second clamping assembly 29 is provided on the concave plate 8, a second lifting mechanism is also provided on the front side of the vertical plate, a third clamping assembly is provided on the second lifting mechanism, the third clamping assembly is used to clamp a holding cup 9, a solvent-resistant member is provided in the holding cup 9, and the first clamping assembly and the second clamping assembly are used to clamp a rubber sample 30.

[0028] Among them, preferably, the lower end of the vertical section of the L-shaped connecting rod 5 is connected to the first lifting mechanism 3, the lower surface of the horizontal section of the L-shaped connecting rod 5 is fixed with a force sensor, the lower end of the force sensor is fixed with a first clamping assembly 6, and the first clamping assembly 6 clamps a rubber sample 30.

[0029] The first lifting mechanism 3 may be a crank rocker mechanism, a linear guide mechanism or other components used for lifting in the prior art.

[0030] The working principle and beneficial effects of the above technical solution are as follows: pour the solvent-resistant liquid into the holding cup 9, then place the holding cup 9 on the third clamping assembly, the third clamping assembly clamps the holding cup 9, and then the first clamping assembly 6 and the second clamping assembly are clamped to the upper and lower ends of the rubber sample 30 respectively, and then the second lifting mechanism is started to lift the holding cup 9, and the concave plate 8 and the rubber sample 30 are immersed in the solvent-resistant liquid, and then the first lifting mechanism 3 is started to lift the L-shaped connecting rod 5, and the L-shaped connecting rod 5 drives the first clamping assembly to rise, stretching the rubber sample 30, and breaking it after stretching it multiple times, and observing the displayed value of the force sensor multiple times;

[0031] By setting the first clamping component 6, the second clamping component, the third clamping component, the first lifting mechanism 3 and the second lifting mechanism, as well as the force sensor structure, the fatigue life of the rubber sample 30 in the state of contact with the solvent can be detected more accurately, and it is also convenient for customers to better adjust the production process and ratio. The structure is relatively simple, easy to use, and highly operable. By setting the shell 2, the safety of the device can be effectively improved.

[0032] Example 2

[0033] On the basis of the above embodiment 1, Figure 1 、 5 -7, the second lifting mechanism includes two left-right symmetrical fixed rods 12 and a fixed plate 10, the fixed rod 12 is fixedly arranged on the upper surface of the workbench 1, and the fixed plate 10 is provided with two left-right symmetrical third pulleys 27 and two left-right symmetrical fourth pulleys 28, the third pulley 27 and the fourth pulley 28 are both rotatably connected to the fixed plate 10, a third motor 25 is installed on the upper side of the third pulley 27 on the left, the lower output end of the third motor 25 is fixedly connected to the rotating shaft, the rotating shaft is fixedly connected to the center position of the third pulley 27, and the lower end of the rotating shaft is rotatably connected to the fixed plate 10, the second belt 14 is wound around the third pulley 27 and the fourth pulley 28, and a nut is fixedly provided at the center position of the fourth pulley 28, the fixed rod 12 is provided with a thread, and the fixed rod 12 passes through the fixed plate 10 upward, and the nut is threadedly connected to the fixed rod 12.

[0034] Among them, preferably, the third clamping assembly includes a fourth motor, the fourth motor is fixedly arranged at the central position of the fixed plate 10, the upper output end of the fourth motor is fixedly connected to the rotating shaft, the upper end of the rotating shaft is fixedly connected to the turntable 34, the upper end of the turntable 34 is rotatably connected to the clamping disk 11, and a plurality of support rods 32 are fixedly provided on the lower surface of the clamping disk 11, the support rods 32 are fixedly arranged on the fixed plate 10, and a plurality of connecting rods 31 are hinged on the turntable 34, the other end of the connecting rod 31 is hinged to a slider 33, a plurality of through grooves 26 are provided on the clamping disk 11, the slider 33 is slidably arranged in the through groove 26, and the upper end of the slider 33 is fixedly connected to the clamping rod 24, and the clamping rod 24 clamps the holding cup 9 on the side close to the center of the clamping disk 11.

[0035] Among them, preferably, the protruding plate 4 is fixedly arranged on the front side of the vertical plate 7, and a concave plate 8 is detachably installed on the lower side of the protruding plate 4, and the concave plate 8 includes a horizontally arranged mounting plate 801, and vertically arranged connecting plates 802 are fixed at the left and right ends of the mounting plate 801, and a horizontally arranged horizontal plate 803 is fixed at the upper end of the connecting plate 802. The horizontal plate 803 is detachably connected to the lower side of the protruding plate 4, and a second clamping assembly 29 is provided at the central position of the mounting plate 801, and the second clamping assembly 29 clamps the rubber sample 30.

[0036] The working principle and beneficial effects of the above technical solution are as follows: the second clamping assembly 29 clamps the lower end of the rubber sample 30, then the horizontal plate 803 is connected to the protruding plate 4, and then the holding cup 9 is placed on the clamping disk 11, and then the fourth motor is started to drive the rotating shaft to rotate, the rotating shaft drives the turntable 34 to rotate, the turntable 34 drives the connecting rod 31 to deflect, the connecting rod 31 drives the slider 33 to move toward the holding cup 9, and the clamping rod 24 on the slider 33 clamps the holding cup 9; the third motor 25 is started to drive the rotating shaft to rotate, the rotating shaft drives the third pulley 27 to rotate, the third pulley 27 drives the fourth pulley 28 to rotate through the second belt 14, thereby driving the nut on the fourth pulley 28 to rotate, and since the nut is threadedly connected to the fixing rod 12, the fixing plate 10 rises, and the rubber sample 30 is immersed in the holding cup;

[0037] By setting the fourth motor, the turntable 34 and the connecting rod 31, the clamping rod 24 can be driven to clamp the cup 9. The structure is simple, easy to use, and the clamping is relatively stable. At the same time, a nut on the fourth pulley 28 is threadedly connected to the fixing rod 12. When the fourth pulley 28 rotates, the upward movement of the fixing plate 10 can be effectively driven, thereby improving the practicality and stability of the device.

[0038] Example 3

[0039] On the basis of the above-mentioned embodiments 1-2, Figure 8As shown, the clamping disk 11 is provided with two front-to-back symmetrical grooves 13, a splint 37 is slidingly provided in the groove 13, a buffer spring 21 and a first air bag 16 are fixed on the side where the splint 37 is close to each other, the other end of the buffer spring 21 is fixed on the inner wall of the side where the groove 13 is close to each other, a first trapezoidal block 38 is fixed on the side where the splint 37 is away from each other, two front-to-back symmetrical driving rods 35 are fixed on the L-shaped connecting rod 5, a second trapezoidal block 36 is fixed on the side where the driving rod 35 is close to each other, and the second trapezoidal block 36 cooperates with the first trapezoidal block 38.

[0040] Among them, preferably, the front and rear sides of the holding cup 9 are hinged with a guard plate 19, the lower end of the guard plate 19 is fixedly connected to the movable plate 20, the side of the movable plates 20 that are close to each other is fixedly connected to the reset spring 17, the other end of the reset spring 17 is fixedly connected to the side wall of the splint 37 that is away from each other, and a second airbag 18 is also fixedly provided on the side of the movable plates 20 that are close to each other, the other end of the second airbag 18 is fixedly connected to the side wall of the splint 37 that is away from each other, and a pipe 15 is provided in the splint 37, and the pipe 15 connects the first airbag 16 and the second airbag 18.

[0041] Preferably, glass doors are symmetrically provided on the front side wall of the housing 2 .

[0042] The working principle and beneficial effects of the above technical solution are as follows: when the L-shaped connecting rod 5 moves upward, it drives the driving rod 35 to move upward at the same time, and the driving rod 35 drives the second trapezoidal block 36 to move upward. The second trapezoidal block 36 cooperates with the first trapezoidal block 38, thereby squeezing the clamping plate 37 to move in a direction close to each other, and the buffer spring 21 is compressed, and the first airbag 16 abuts against the holding cup 9. Then, under the action of pressure, the gas in the first airbag 16 enters the second airbag 18 through the pipe 15. The second airbag 18 expands and pushes the movable plate 20 open. The movable plate 20 drives the guard plate 19 to deflect, thereby blocking the partial opening at the upper end of the holding cup 9.

[0043] By moving the L-shaped connecting rod 5, the first airbag 16 on the clamping plate 37 clamps the holding cup 9, which can effectively achieve the effect of clamping and fixing. At the same time, the buffering effect of the first airbag 16 can also prevent the holding cup 9 from being damaged due to excessive clamping force of the clamping plate 37; and a pipe 15 is provided to connect the first airbag 16 and the second airbag 18. When the first airbag 16 abuts against the holding cup 9, the second airbag 18 can be expanded, thereby driving the guard plate 19 to deflect to block the partial opening at the upper end of the holding cup 9, so that the rubber sample 30 can resist the dangerous situation that may be caused by the collapse of the solvent when it breaks.

[0044] Example 4

[0045] Based on any one of the above embodiments 1-3, the rubber solvent resistance fatigue tester further includes:

[0046] The first speed sensor is installed on the L-shaped connecting rod 5 and is used to detect the lifting speed of the L-shaped connecting rod 5;

[0047] Second speed sensor: installed on the fixed plate 10, used to detect the lifting speed of the fixed plate 10;

[0048] Timer 1: installed on the first lifting mechanism 3, used to detect the running time of the first lifting mechanism 3;

[0049] Timer 2: installed on the third motor 25, used to detect the working time of the third motor 25;

[0050] Displacement sensor 1: installed on the L-shaped connecting rod 5, used to detect the movement displacement of the L-shaped connecting rod 5;

[0051] Displacement sensor 2: installed on the fixed plate 10, used to detect the movement displacement of the fixed plate 10;

[0052] The controller and the alarm are respectively installed on the workbench 1. The controller is electrically connected to the first speed sensor, the second speed sensor, the timer 1, the timer 2, the displacement sensor 1, the displacement sensor 2 and the alarm. The controller controls the alarm based on the first speed sensor, the second speed sensor, the timer 1, the timer 2, the displacement sensor 1 and the displacement sensor 2, including the following steps:

[0053] Step 1: The controller obtains the working status index of the tester based on the first speed sensor, the second speed sensor, the timer 1, the timer 2, the displacement sensor 1, the displacement sensor 2 and formula (1):

[0054]

[0055] Wherein, K is the working status index of the tester; M1 is the detection value of the first velocity sensor; T1 is the detection value of the timer 1; L1 is the detection value of the displacement sensor 1; F is the detection value of the force sensor; M2 is the detection value of the second velocity sensor; T2 is the detection value of the timer 2; L2 is the detection value of the displacement sensor 2; S is the cross-sectional area of the rubber sample; P is the preset tensile strength of the rubber sample; e is a natural constant;

[0056] The tensile strength is the tensile stress at the moment when the rubber sample 30 is stretched to fracture;

[0057] Step 2: Compare the working status index of the tester calculated by formula (1) with the corresponding preset working status index. When the working status index of the tester calculated by formula (1) is less than the corresponding preset working status index, the controller controls the alarm to sound an alarm.

[0058] The working principle and beneficial effects of the above calculation scheme are as follows: first, the working state index of the tester is calculated using formula (1), and the controller compares the working state index of the tester calculated by formula (1) with the corresponding preset working state index. When the working state index of the tester calculated by formula (1) is less than the corresponding preset working state index, the controller controls the alarm to sound an alarm. When the calculated working state index of the tester is less than the corresponding preset working state index, it reminds the personnel that there is a problem with the first lifting mechanism 3 and the second lifting mechanism of the tester, and it is necessary to promptly check whether the internal driving part of the first lifting mechanism and the third motor 25 are working normally. After the inspection is completed, the internal driving part of the first lifting mechanism and the third motor 25 continue to work, and the controller connects the first speed sensor, the second speed sensor, the timer 1, the timer 2, the displacement sensor 1, the displacement sensor 2 and the alarm to monitor the working state index of the tester. And by setting the alarm to realize the alarm and remind the personnel to check the problems in time, it can effectively reduce the failure of the tester and effectively improve the practicality.

[0059] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. If such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A rubber solvent resistance fatigue tester, characterized in that: The invention comprises a workbench (1), wherein a shell (2) and a vertical plate (7) are fixedly provided on the workbench (1), a first lifting mechanism (3) is provided on the rear side of the vertical plate (7), an L-shaped connecting rod (5) is provided on the upper side of the first lifting mechanism (3), a first clamping assembly (6) and a force sensor are provided on the L-shaped connecting rod (5), a protruding plate (4) is symmetrically provided on the front side of the vertical plate (7), a concave plate (8) is provided on the protruding plate (4), a second clamping assembly (29) is provided on the concave plate (8), a second lifting mechanism is further provided on the front side of the vertical plate, a third clamping assembly is provided on the second lifting mechanism, the third clamping assembly is used to clamp a holding cup (9), a solvent-resistant material is provided in the holding cup (9), and the first clamping assembly and the second clamping assembly are used to clamp a rubber sample (30); The second lifting mechanism comprises two left-right symmetrical fixed rods (12) and a fixed plate (10), the fixed rod (12) being fixedly arranged on the upper surface of the workbench (1), the fixed plate (10) being provided with two left-right symmetrical third pulleys (27) and two left-right symmetrical fourth pulleys (28), the third pulleys (27) and the fourth pulleys (28) being both rotatably connected to the fixed plate (10), a third motor (25) being installed on the upper side of the third pulley (27) on the left side, the lower output end of the third motor (25) being fixedly connected to the rotating shaft, the rotating shaft being fixedly connected to the central position of the third pulley (27), and the lower end of the rotating shaft being rotatably connected to the fixed plate (10), the third pulley (27) and the fourth pulley (28) being both wound with a second belt (14), and a nut being fixedly arranged at the central position of the fourth pulley (28), the fixed rod (12) being provided with a thread, the fixed rod (12) passing through the fixed plate (10) upwards, and the nut being threadably connected to the fixed rod (12); The third clamping assembly includes a fourth motor, which is fixedly arranged at the central position of the fixed plate (10), and the upper output end of the fourth motor is fixedly connected to the rotating shaft, and the upper end of the rotating shaft is fixedly connected to the turntable (34), and the upper end of the turntable (34) is rotatably connected to the clamping disk (11), and a plurality of support rods (32) are fixedly provided on the lower surface of the clamping disk (11), and the support rods (32) are fixedly arranged on the fixed plate (10), and the turntable (34) is hinged with a plurality of connecting rods (31), and the other end of the connecting rod (31) is hinged with a slider (33), and the clamping disk (11) is provided with a plurality of through grooves (26), and the slider (33) is slidably arranged in the through grooves (26), and the upper end of the slider (33) is fixedly connected to the clamping rod (24), and the clamping rod (24) clamps the holding cup (9) on one side close to the center of the clamping disk (11); The clamping disc (11) is provided with two grooves (13) symmetrical in front and back, a clamping plate (37) is slidably provided in the groove (13), a buffer spring (21) and a first air bag (16) are fixedly provided on the side of the clamping plates (37) close to each other, the other end of the buffer spring (21) is fixedly provided on the inner wall of the side of the groove (13) close to each other, a first trapezoidal block (38) is fixedly provided on the side of the clamping plates (37) away from each other, two driving rods (35) symmetrical in front and back are fixedly provided on the L-shaped connecting rod (5), a second trapezoidal block (36) is fixedly provided on the side of the driving rods (35) close to each other, and the second trapezoidal block (36) cooperates with the first trapezoidal block (38); The holding cup (9) is hinged with a guard plate (19) at the front and rear sides. The lower end of the guard plate (19) is fixedly connected to the movable plate (20). The side of the movable plate (20) that is close to each other is fixedly connected to the reset spring (17). The other end of the reset spring (17) is fixedly connected to the side wall of the clamping plate (37) that is away from each other. A second air bag (18) is also fixedly provided on the side of the movable plate (20) that is close to each other. The other end of the second air bag (18) is fixedly connected to the side wall of the clamping plate (37) that is away from each other. A pipe (15) is provided in the clamping plate (37). The pipe (15) communicates with the first air bag (16) and the second air bag (18).

2. A rubber solvent resistance fatigue tester according to claim 1, characterized in that: The lower end of the vertical section of the L-shaped connecting rod (5) is connected to the first lifting mechanism (3), a force sensor is fixedly provided on the lower surface of the horizontal section of the L-shaped connecting rod (5), a first clamping assembly (6) is fixedly provided at the lower end of the force sensor, and a rubber sample (30) is clamped on the first clamping assembly (6).

3. A rubber solvent resistance fatigue tester according to claim 1, characterized in that: The extension plate (4) is fixedly arranged on the front side of the vertical plate (7), and a concave plate (8) is detachably mounted on the lower side of the extension plate (4). The concave plate (8) includes a transversely arranged mounting plate (801). Vertically arranged connecting plates (802) are fixedly arranged at the left and right ends of the mounting plate (801). A transversely arranged horizontal plate (803) is fixedly arranged at the upper end of the connecting plate (802). The horizontal plate (803) is detachably connected to the lower side of the extension plate (4). A second clamping assembly (29) is provided at the center of the mounting plate (801). The second clamping assembly (29) clamps a rubber sample (30).

4. A rubber solvent resistance fatigue tester according to claim 1, characterized in that: Glass doors are symmetrically provided on the front side wall of the shell (2).

Images