A crank rocker type rubber solvent fatigue tester

Abstract

The application provides a crank rocker type rubber solvent resistance fatigue tester, and relates to the technical field of fatigue testing. The crank rocker type rubber solvent resistance fatigue tester comprises a workboard, a fixed plate is fixed on the workboard, a crank rocker assembly is arranged on the front side of the fixed plate, the crank rocker assembly comprises a sliding plate, a first connecting rod is connected to the sliding plate, the first connecting rod is fixedly connected to a second connecting rod, a clamping assembly is arranged on the second connecting rod, a fixed clamping assembly and a lifting clamping assembly are arranged on the rear side of the fixed plate, the fixed clamping assembly is arranged above the lifting clamping assembly, an experimental piece is clamped on the clamping assembly and the fixed clamping assembly, an experimental cup is arranged on the lifting clamping assembly, and a solvent resistance is arranged in the experimental cup. In the prior art, the components for clamping and the components for lifting are arranged on one side. In the application, the crank rocker assembly is arranged on one side of the fixed plate, and the remaining components are arranged on the other side of the fixed plate. Therefore, the space on one side can be effectively saved, the volume on one side can be reduced, the use is more convenient, and the safety is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fatigue testing, in particular to a crank rocker type rubber solvent resistance fatigue tester. BACKGROUND

[0002] Rubber has been used for more than 160 years as an irreplaceable elastic material and has been widely used in national defense construction and economic development. Rubber is not only an indispensable material in life, but also a high-performance material and functional material necessary for the development of high-tech. As a high-elasticity polymer material with reversible deformation, rubber has been widely used due to its good elastic properties. In some important application fields, it is necessary to know the various properties of rubber materials, such as tensile strength, compression strength, bending strength, torsional strength, fatigue tensile strength, corrosion resistance, etc. When it is applied in dynamic field, it is necessary to know the fatigue tensile strength of rubber material. Among them, the fatigue tensile strength of rubber material is to analyze quantitatively the relationship between the fatigue breaking times and the tensile distance of rubber under the set tensile stroke, i.e. the relationship between the tensile distance and the tensile times.

[0003] At present, when the fatigue tester on the market performs test evaluation, various components of the tester are often collected on the same vertical plane, i.e. the components for clamping the measuring cup, the components for lifting the measuring cup, the components for clamping the sample, and the components for lifting the sample are combined on the same vertical plane. This results in a relatively dense distribution of parts, and it is relatively cumbersome to replace the sample and the measuring cup. Moreover, if a certain part fails, it is relatively complex to repair, and the safety and reliability are also relatively low. SUMMARY

[0004] The present application provides a crank rocker type rubber solvent resistance fatigue tester to solve the problems in the background art.

[0005] To solve the above technical problems, the present application discloses a crank rocker type rubber solvent resistance fatigue tester, which comprises a working plate, a fixed plate is arranged on the working plate, a crank rocker assembly is arranged on the front side of the fixed plate, the crank rocker assembly comprises a sliding plate, a first connecting rod is connected to the sliding plate, a second connecting rod is connected to the first connecting rod, a clamping assembly is arranged on the second connecting rod, a fixed clamping assembly and a lifting clamping assembly are arranged on the rear side of the fixed plate, the fixed clamping assembly is located above the lifting clamping assembly, an experimental sample is clamped on the clamping assembly and the fixed clamping assembly, an experimental cup is arranged on the lifting clamping assembly, and a solvent resistance is arranged in the experimental cup.

[0006] Preferably, the workboard is fixedly provided with a protective shell, the crank rocker assembly comprises a motor one, the motor one is fixedly arranged on the workboard, the rear output end of the motor one is fixedly connected with a first synchronous pulley, the front side of the fixed plate is fixedly provided with two left-right symmetrical tracks, a sliding plate is slidably arranged on the tracks, a drive rod is hingedly arranged on the front side of the sliding plate, a drive plate is hingedly arranged on the upper end of the drive rod, the drive rod is hingedly arranged at an eccentric position on the rear side of the drive plate, a fixed rod is fixedly arranged on the front side of the drive plate, a second synchronous pulley is fixedly arranged on the fixed rod, and the first synchronous pulley and the second synchronous pulley are wound with a synchronous belt.

[0007] Preferably, the upper end of the sliding plate is fixedly connected with a first connecting rod, the upper end of the first connecting rod is fixedly connected with a second connecting rod at an angle of 90 degrees, a concave groove is formed in the fixed plate, the second connecting rod extends through the concave groove to the rear side of the fixed plate, and a clamping assembly is fixedly arranged on the lower surface of the second connecting rod and clamped on the upper end of the experimental piece.

[0008] Preferably, the fixed clamping assembly comprises two left-right symmetrical fixed blocks, the fixed blocks are fixedly arranged on the rear side walls of the fixed plate, recessed blocks are mounted on the lower surfaces of the fixed blocks, and clamping devices are arranged on the recessed blocks and clamped on the lower end of the experimental piece.

[0009] Preferably, the lifting clamping assembly comprises a lifting assembly, the lifting assembly comprises a double-shaft motor, the double-shaft motor is fixedly arranged on the workboard, the two output ends of the double-shaft motor are fixedly connected with rotating shafts, the workboard is also provided with left-right symmetrical reversing boxes, the reversing boxes are provided with a first bevel gear, a second bevel gear and a first threaded rod, the rotating shafts extend into the reversing boxes and are rotatably connected with the reversing boxes at the extending positions, the ends of the rotating shafts away from each other are fixedly connected with the first bevel gears, the sides of the first bevel gears away from each other are meshingly connected with the second bevel gears, the second bevel gears are fixedly arranged on the first threaded rod, the first threaded rod extends upward out of the reversing box and is rotatably connected with the reversing box, the first threaded rod passes through a lifting plate upward, and the first threaded rod is threadedly connected with the lifting plate at the passing position.

[0010] Preferably, the lifting clamping assembly further comprises a clamping assembly, the clamping assembly comprises a clamping plate, the clamping plate is provided with an experimental cup, a plurality of connecting rods are fixedly arranged on the lower end of the clamping plate, the lower ends of the connecting rods are fixedly arranged on the lifting plate, a plurality of sliding grooves are formed in the clamping plate, sliding blocks are slidably arranged in the sliding grooves, clamping rods are fixedly arranged on the sliding blocks, recesses are formed in the two side walls of the sliding grooves, clamping boxes are left-right symmetrically arranged on the sliding blocks, first openings are formed in the side walls of the clamping boxes away from each other, clamping springs are fixedly connected with the side walls of the clamping boxes close to each other, the other ends of the clamping springs are fixedly connected with clamping heads, the clamping heads are slidably connected with the inner walls of the clamping boxes, and the clamping heads extend out of the clamping boxes from the first openings.

[0011] Preferably, the lifting and clamping assembly comprises a second motor, the upper output end of the second motor is fixedly connected with a second threaded rod, the second threaded rod is symmetrically provided with threads in opposite directions, a U-shaped plate is threadedly connected with the second threaded rod, the upper end of the U-shaped plate is fixedly connected with a moving plate, and two left-right symmetrical through grooves are formed in the moving plate.

[0012] Preferably, the second threaded rod is further threadedly connected with a horizontal plate, adjusting rods are hingedly connected to the left and right ends of the horizontal plate, the ends of the adjusting rods away from each other are hingedly connected to a sliding plate, the lower end of the sliding plate is slidably connected with the working plate, the sliding plate passes through the through grooves upwardly, the sliding plate is provided with an abutting mechanism, the abutting mechanism comprises abutting plates, two upper and lower symmetrical slide rods are fixedly arranged on the sides of the abutting plates away from each other, the slide rods pass through the sliding plate, and the slide rods are slidably connected with the sliding plate at the positions passing through the sliding plate, the side of the sliding plate away from the abutting plates is fixedly connected with a power plate, a buffer spring is sleeved on the slide rods, one end of the buffer spring is fixedly connected with the abutting plates, and the other end of the buffer spring is fixedly connected with the side wall of the sliding plate close to each other.

[0013] Preferably, the side of the power plate away from each other is fixedly connected with a first rack, the upper end of the sliding plate is fixedly connected with a protection box, two front and rear symmetrical auxiliary blocks are fixedly arranged on the sides of the protection box away from each other, the sides of the auxiliary blocks close to each other are rotatably connected with gears, the first rack is meshingly connected with the lower sides of the gears, the upper sides of the gears are meshingly connected with a second rack, the second rack extends into the protection box, the second rack is slidably connected with the protection box at the extending position, the side of the second rack close to each other is fixedly connected with an ejection block, the ejection block is slidably connected with the inner wall of the protection box, a second opening is arranged on the side wall of the protection box close to each other, the ejection block extends out of the protection box from the second opening, and the side of the ejection block close to each other is fixedly connected with a protection plate.

[0014] Preferably, the abutting plates are arranged in an arc shape, the abutting plates are in close contact with the experimental cups, the protection plates are also arranged in an arc shape, and the protection plates are located on the upper sides of the experimental cups. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of this specification, illustrate embodiments of the application, and explain the application, but do not constitute a limitation of the application. In the drawings:

[0016] Figure 1 is a structural schematic view of the application;

[0017] Figure 2 is a schematic view of the appearance of the application;

[0018] Figure 3 is a structural schematic view of the clamping plate of the application Figure 1 ;

[0019] Figure 4 is a structural schematic view of the clamping plate of the application

[0020] Figure 5 Structure diagram of the sliding block of the present application;

[0021] Figure 6 Structure diagram of the fixed clamping assembly of the present application Figure 2 ;

[0022] Figure 7 Structure diagram of the abutting mechanism of the present application;

[0023] Figure 8 Side view of the protective box of the present application;

[0024] Figure 9 Top view of the protective box of the present application.

[0025] In the figure: 1, workboard; 2, sliding plate; 3, fixed plate; 4, track; 5, first connecting rod; 6, second connecting rod; 7, driving plate; 8, second synchronous pulley; 9, driving rod; 10, first synchronous pulley; 11, motor one; 12, concave block; 13, clamping rod; 14, lifting plate; 15, second bevel gear; 16, double-shaft motor; 17, rotating shaft; 18, first bevel gear; 19, reversing box; 20, first threaded rod; 21, lifting clamping assembly; 22, fixed block; 23, clamping plate; 24, sliding groove; 25, clamping joint; 26, clamping spring; 27, sliding block; 28, clamping box; 29, motor two; 30, second threaded rod; 31, adjusting rod; 32, U-shaped plate; 33, sliding rod; 34, first rack; 35, gear; 36, auxiliary block; 37, abutting plate; 38, protective box; 39, buffer spring; 40, power plate; 41, moving plate; 42, sliding plate; 43, cross plate; 44, second rack; 45, ejecting block; 46, protective plate. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to explain and illustrate the present application, and are not used to limit the present application.

[0027] In addition, the description such as "first", "second" in the present application is only for the purpose of description, and is not intended to particularly indicate the order or sequence, nor to limit the present application, which is merely to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features of various embodiments can be combined with each other, but it must be based on the realization of the person skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0028] Embodiment 1

[0029] The embodiment of the present application provides a crank rocker type rubber solvent fatigue tester, as shown in Figure 1 、 3 , 6, comprising a workboard 1, a fixed plate 3 is arranged on the workboard 1, a crank rocker assembly is arranged on the front side of the fixed plate 3, the crank rocker assembly comprises a sliding plate 2, a first connecting rod 5 is connected to the sliding plate 2, a second connecting rod 6 is connected to the first connecting rod 5, a clamping assembly is arranged on the second connecting rod 6, a fixed clamping assembly and a lifting clamping assembly 21 are arranged on the rear side of the fixed plate 3, and the fixed clamping assembly is located above the lifting clamping assembly 21, an experimental piece is clamped on the clamping assembly and the fixed clamping assembly, and an experimental cup is arranged on the lifting clamping assembly 21, and a solvent-resistant is arranged in the experimental cup.

[0030] The working principle and beneficial effects of the above technical solution are as follows: the experimental piece is clamped by the clamping assembly and the fixed clamping assembly, then the solvent-resistant is added in the experimental cup, then the experimental cup is placed on the lifting clamping assembly 21, the lifting clamping assembly 21 is started, the experimental cup is clamped and lifted to a suitable position, the experimental piece is soaked in the experimental cup, then the crank rocker assembly is started, the sliding plate 2 is lifted, the first connecting rod 5 and the second connecting rod 6 are lifted, and the experimental piece is stretched, and the experimental piece can be pulled off after being stretched for several times.

[0031] By arranging the crank rocker assembly on the front side of the fixed plate 3 and arranging the remaining components on the rear side of the fixed plate 3, the space on one side can be effectively saved, the volume on one side can be reduced, the distribution of the components on one side is more sparse, it is more convenient to replace the experimental piece and the experimental cup, and if a component fails, the replacement and maintenance are more simple, and the practicability of the device is effectively improved.

[0032] Embodiment 2

[0033] On the basis of the above-mentioned embodiment 1, as Figures 1-2As shown, the workboard 1 is fixedly provided with a protective shell, the crank rocker assembly comprises a motor 11, the motor 11 is fixedly arranged on the workboard 1, the rear output end of the motor 11 is fixedly connected with a first synchronous pulley 10, the front side of the fixed plate 3 is fixedly provided with two left-right symmetrical tracks 4, the slide plate 2 is slidably arranged on the track 4, the front side of the slide plate 2 is hingedly connected with a drive rod 9, the upper end of the drive rod 9 is hingedly connected with a drive plate 7, the drive rod 9 is hingedly connected to the eccentric position on the rear side of the drive plate 7, the front side of the drive plate 7 is fixedly provided with a fixed rod, the fixed rod is fixedly provided with a second synchronous pulley 8, and the first synchronous pulley 10 and the second synchronous pulley 8 are wound with a synchronous belt.

[0034] Preferably, the upper end of the slide plate 2 is fixedly connected with a first connecting rod 5, the upper end of the first connecting rod 5 is fixedly connected with a second connecting rod 6 at 90 degrees, a concave groove is formed in the fixed plate 3, the second connecting rod 6 extends to the rear side of the fixed plate 3 through the concave groove, and the lower surface of the second connecting rod 6 is fixedly provided with a clamping assembly which clamps the upper end of the experimental piece.

[0035] The working principle and beneficial effects of the above technical scheme are as follows: starting the motor 11, the first synchronous pulley 10 rotates, the first synchronous pulley 10 drives the second synchronous pulley 8 to rotate through the synchronous belt, the second synchronous pulley 8 drives the drive plate 7, the drive plate 7 drives the drive rod 9 to move, the drive rod 9 drives the slide plate 2 to slide up and down, the slide plate 2 drives the first connecting rod 5 and the second connecting rod 6 to move up and down, so that the clamping assembly on the second connecting rod 6 constantly tightens and loosens the experimental piece; by arranging the crank rocker mechanism, the slide plate 2 can be effectively lifted and lowered, and the crank rocker mechanism is simple in structure and convenient to use, so that the experimental piece can be constantly tightened and loosened, and the practicality is effectively improved.

[0036] Embodiment 3

[0037] Based on the above embodiments 1-2, as shown, Figures 3-5 The lifting and clamping assembly 21 comprises a lifting assembly, the lifting assembly comprises a double-shaft motor 16, the double-shaft motor 16 is fixedly arranged on the workboard 1, the two output ends of the double-shaft motor 16 are fixedly connected with rotating shafts 17, the workboard 1 is also provided with a reversing box 19 left and right symmetrically, the reversing box 19 is provided with a first bevel gear 18, a second bevel gear 15 and a first threaded rod 20, the rotating shafts 17 extend into the reversing box 19, and the rotating shafts 17 are rotatably connected with the extending positions of the reversing box 19, the ends of the rotating shafts 17 away from each other are fixedly connected with the first bevel gears 18, the sides of the first bevel gears 18 away from each other are meshingly connected with the second bevel gears 15, the second bevel gears 15 are fixedly arranged on the first threaded rod 20, the first threaded rod 20 extends upward out of the reversing box 19, and the first threaded rod 20 is rotatably connected with the reversing box 19, and the first threaded rod 20 passes through the lifting plate 14 upward, and the first threaded rod 20 is threadedly connected with the lifting plate 14 at the passing position.

[0038] Preferably, the lifting clamping assembly 21 further includes a clamping assembly, which includes a clamping plate 23. An experimental cup is provided on the clamping plate 23. Several connecting rods are fixedly provided at the lower end of the clamping plate 23. The lower ends of the connecting rods are fixedly set on the lifting plate 14. Several sliding grooves 24 are provided on the clamping plate 23. A slider 27 is slidably provided in the sliding grooves 24. A clamping rod 13 is fixedly provided on the slider 27. Several recesses are provided on the two side walls of the sliding grooves 24. Snap-fit ​​boxes 28 are symmetrically provided on the slider 27. A first opening is provided on the side wall of the snap-fit ​​boxes 28 that are far apart from each other. Snap-fit ​​springs 26 are fixedly connected to the side walls of the snap-fit ​​boxes 28 that are close to each other. The other end of the snap-fit ​​springs 26 is fixedly connected to snap-fit ​​connectors 25. Snap-fit ​​connectors 25 are slidably connected to the inner wall of the snap-fit ​​boxes 28. Snap-fit ​​connectors 25 extend out of the snap-fit ​​boxes 28 from the first opening.

[0039] The working principle and beneficial effects of the above technical solution are as follows: The experimental cup is placed on the clamping plate 23, and the clamping rod 13 is manually adjusted. The clamping rod 13 drives the slider 27 to slide in the groove 24. The snap joint 25 continuously engages with the recess, and the snap spring 26 continuously compresses and extends. When the clamping rod 13 contacts the experimental cup, the snap joint 25 snaps into the corresponding recess. Then, the dual-axis motor 16 is started, the rotating shaft 17 rotates, the rotating shaft 17 drives the first bevel gear 18 to rotate, the first bevel gear 18 drives the second bevel gear 15 to rotate, the second bevel gear 15 drives the first threaded rod 20 to rotate, the first threaded rod 20 drives the lifting plate 14 to rise, and the lifting plate 14 drives the clamping plate 23 to rise, so that the experimental piece can be immersed in the experimental cup.

[0040] By setting several recesses and continuously cooperating with the retainer 25, the clamping rod 13 can be tightly fitted with the experimental cup, thus achieving a good clamping effect. The first threaded rod 20 is set to cooperate with the lifting plate 14, thereby driving the clamping plate 23 to rise and fall. The structure is simple, the lifting is relatively stable, the safety is high, and the functionality of the device is effectively improved.

[0041] Example 4

[0042] Based on the above embodiments 1-2, such as Figures 6-9 As shown, the lifting clamping assembly 21 includes a second motor 29. The upper output end of the second motor 29 is fixedly connected to a second threaded rod 30. The second threaded rod 30 is symmetrically provided with threads of opposite directions. A U-shaped plate 32 is threadedly connected to the second threaded rod 30. A movable plate 41 is fixedly connected to the upper end of the U-shaped plate 32. Two symmetrical through slots are opened on the movable plate 41.

[0043] Preferably, the second threaded rod 30 is further threadedly connected with a horizontal plate 43, the horizontal plate 43 is hingedly connected with adjusting rods 31 at two ends, the adjusting rods 31 are hingedly connected with a sliding plate 42 at distal ends, the sliding plate 42 is slidably connected with the working plate 1 at a lower end, the sliding plate 42 passes through the through slot upwardly, the sliding plate 42 is provided with an abutting mechanism, the abutting mechanism comprises abutting plates 37, the abutting plates 37 are fixedly provided with two symmetrical slide rods 33 at distal sides, the slide rods 33 pass through the sliding plate 42, and the slide rods 33 are slidably connected with the sliding plate 42 at passing positions, the sliding plate 42 is fixedly connected with a power plate 40 at a side distal from the abutting plates 37, the slide rods 33 are sleeved with buffer springs 39, one end of the buffer spring 39 is fixedly connected with the abutting plate 37, and the other end of the buffer spring 39 is fixedly connected with a side wall of the sliding plate 42 proximal to each other.

[0044] Preferably, the power plate 40 is fixedly connected with first racks 34 at distal sides, the sliding plate 42 is fixedly connected with a protection box 38 at an upper end, the protection box 38 is fixedly provided with two symmetrical auxiliary blocks 36 at distal sides, the auxiliary blocks 36 are rotatably connected with gears 35 at proximal sides, the first racks 34 are meshingly connected with lower sides of the gears 35, the gears 35 are meshingly connected with second racks 44 at upper sides, the second racks 44 extend into the protection box 38, and the second racks 44 are slidably connected with the protection box 38 at extending positions, the second racks 44 are fixedly connected with ejection blocks 45 at proximal sides, the ejection blocks 45 are slidably connected with inner walls of the protection box 38, and the protection box 38 is provided with second openings at proximal side walls, the ejection blocks 45 extend out of the protection box 38 from the second openings, and the ejection blocks 45 are fixedly connected with protection plates 46 at proximal sides.

[0045] Preferably, the abutting plates 37 are arc-shaped, and the abutting plates 37 are in close contact with the experimental cups, and the protection plates 46 are also arc-shaped, and the protection plates 46 are located at upper sides of the experimental cups.

[0046] The working principle and beneficial effects of the above technical solution are as follows: the experimental cups are placed on the moving plate 41, then the motor two 29 is started, the second threaded rod 30 starts to rotate, the second threaded rod 30 drives the U-shaped plate 32 to ascend, the U-shaped plate 32 drives the moving plate 41 to ascend, and the experimental cups are lifted to a suitable position; while the moving plate 41 ascends, the second threaded rod 30 drives the horizontal plate 43 to descend, the horizontal plate 43 drives the adjusting rods 31 to move, the adjusting rods 31 drive the two sliding plates 42 to move towards each other, and the sliding plates 42 drive the abutting mechanism to move towards each other.

[0047] When the abutting plate 37 in the abutting mechanism abuts against the experimental cup, the buffer spring 39 is compressed, the two power plates 40 move reversely, the power plate 40 drives the first rack 34 to move reversely, the first rack 34 drives the gear 35 to rotate, the gear 35 drives the second rack 44 to move towards each other, the second rack 44 drives the ejector block 45 to move towards each other, the ejector block 45 drives the protective plate 46 to move towards each other, and the protective plate 46 moves to the upper side of the experimental cup;

[0048] By setting the second threaded rod 30 and the bidirectional threads on the second threaded rod 30, when the second threaded rod 30 rotates, the moving plate 41 can be driven to rise, and the sliding plate 42 can be driven to move towards each other, so as to combine the lifting and clamping functions, and effectively improve the functionality of the device; by setting the cooperation of the first rack 34, the gear 35 and the second rack 44, when the abutting plate 37 clamps the experimental cup, the first rack 34 is driven to move, so that the protective plate 46 moves towards each other, and the protective plate 46 blocks part of the opening on the upper side of the experimental cup, so as to block part of the solvent-resistant collapse when the experimental piece is disconnected, and effectively improve the safety of the device;

[0049] At the same time, when the abutting plate 37 clamps the experimental cup, the protective plate 46 starts to extend, the clamping and protection are combined, the innovation of the device is improved, the abutting plate 37 is arranged in an arc shape, the experimental cup can be effectively clamped and placed, the experimental cup is prevented from loosening, the protective plate 46 is arranged in an arc shape, more solvent-resistant collapse is blocked, and the practicability of the device is improved.

[0050] Embodiment 5

[0051] On the basis of any one of the above embodiments 1-4, the crank rocker type rubber solvent-resistant fatigue tester further comprises:

[0052] A rotation speed sensor is installed on the second synchronous pulley 8 and is used to detect the rotation speed of the second synchronous pulley 8;

[0053] A displacement sensor is installed on the sliding plate 2 and is used to detect the movement displacement of the sliding plate 2;

[0054] A timer is installed on the motor one 11 and is used to detect the working time length of the motor one 11;

[0055] The controller and the alarm are respectively installed on the workbench, the controller is electrically connected with the rotation speed sensor, the displacement sensor, the timer and the alarm, the controller controls the alarm to work based on the rotation speed sensor, the displacement sensor, the timer and the formula (1), and the working process comprises the following steps:

[0056] Step 1: The controller obtains the lifting state index of the crank rocker assembly based on the rotation speed sensor, the displacement sensor, the timer and the formula (1):

[0057]

[0058] Wherein, K is the lifting state index of the crank rocker assembly; π is the circular constant; r is the radius of the second synchronous pulley 8; n is the detection value of the speed sensor; T is the detection value of the timer; L is the detection value of the displacement sensor; t is the unit time; e is the natural constant;

[0059] Step 2: compare the lifting state index of the crank rocker assembly calculated by formula (1) with the corresponding preset lifting state index, and when the lifting state index of the crank rocker assembly calculated by formula (1) is less than the corresponding preset lifting state index, the controller controls the alarm to alarm.

[0060] The working principle and beneficial effects of the above calculation scheme are as follows: first, the lifting state index of the crank rocker assembly is calculated by formula (1), the controller compares the lifting state index of the crank rocker assembly calculated by formula (1) with the corresponding preset lifting state index, and when the lifting state index of the crank rocker assembly calculated by formula (1) is less than the corresponding preset lifting state index, the controller controls the alarm to alarm, and when the lifting state index of the crank rocker assembly calculated is less than the corresponding preset lifting state index, it prompts personnel that the crank rocker assembly of the tester has a problem, and the work of the motor 11 should be checked in time, whether the connection of the synchronous belt with the second synchronous pulley 8 and the first synchronous pulley 10 is stable, and whether the hinge of the driving rod 9 with the sliding plate 2 and the driving plate 7 is normal. When the inspection is completed, the motor 11 continues to work, and the controller connects the speed sensor, the displacement sensor, the timer and the alarm to monitor the working state index of the tester. And by setting the alarm to alarm and remind personnel to check the problem in time, it can effectively reduce the failure of the crank rocker assembly and effectively improve the practicality.

[0061] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. If these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A crank-rocker type rubber solvent resistance fatigue tester, characterized in that, The device includes a working plate (1), a fixed plate (3) on the working plate (1), a crank rocker assembly on the front side of the fixed plate (3), the crank rocker assembly including a sliding plate (2), a first connecting rod (5) connected to the sliding plate (2), a second connecting rod (6) connected to the first connecting rod (5), a clamping assembly on the second connecting rod (6), a fixed clamping assembly and a lifting clamping assembly (21) on the rear side of the fixed plate (3), and the fixed clamping assembly is located above the lifting clamping assembly (21). The clamping assembly and the fixed clamping assembly hold the experimental piece, and the lifting clamping assembly (21) has an experimental cup, which contains a solvent resistant material. The lifting clamping assembly (21) includes a lifting assembly, which includes a dual-axis motor (16). The dual-axis motor (16) is fixedly mounted on the work plate (1). The output ends of the dual-axis motor (16) on both sides are fixedly connected to the rotating shaft (17). The work plate (1) also has a reversing box (19) symmetrically arranged on the left and right. The reversing box (19) is provided with a first bevel gear (18), a second bevel gear (15), and a first threaded rod (20). The rotating shaft (17) extends into the reversing box (19), and the rotating shaft (17) and the reversing box (19) are rotated at the same position. The rotating shaft (17) is fixedly connected to the first bevel gear (18) at one end away from each other. The first bevel gear (18) is meshed with the second bevel gear (15) on the side away from each other. The second bevel gear (15) is fixedly mounted on the first threaded rod (20). The first threaded rod (20) extends upward out of the reversing box (19) and is rotatably connected to the reversing box (19). The first threaded rod (20) passes upward through the lifting plate (14) and is threadedly connected to the lifting plate (14) at the passing position. The fixed clamping assembly includes two left and right symmetrical fixed blocks (22). The fixed blocks (22) are fixedly set on the rear side wall of the fixed plate (3). A concave block (12) is installed on the lower surface of the fixed block (22). A clamping device is set on the concave block (12) and clamps the lower end of the experimental piece.

2. The crank-rocker type rubber solvent resistance fatigue tester according to claim 1, characterized in that, A protective shell is fixed on the working plate (1). The crank rocker assembly includes a motor (11). The motor (11) is fixed on the working plate (1). The rear output end of the motor (11) is fixedly connected to the first synchronous pulley (10). Two left-right symmetrical tracks (4) are fixed on the front side of the fixed plate (3). A slide plate (2) is slidably mounted on the track (4). A drive rod (9) is hinged to the front side of the slide plate (2). A drive plate (7) is hinged to the upper end of the drive rod (9). The drive rod (9) is hinged to the eccentric position on the rear side of the drive plate (7). A fixed rod is fixed on the front side of the drive plate (7). A second synchronous pulley (8) is fixed on the fixed rod. A synchronous belt is wound around the first synchronous pulley (10) and the second synchronous pulley (8).

3. The crank-rocker type rubber solvent resistance fatigue tester according to claim 2, characterized in that, The upper end of the slide plate (2) is fixedly connected to the first connecting rod (5), and the upper end of the first connecting rod (5) is fixedly connected to the second connecting rod (6) at a 90-degree angle. A concave groove is provided on the fixing plate (3), and the second connecting rod (6) extends backward through the concave groove to the rear side of the fixing plate (3). A clamping component is fixedly provided on the lower surface of the second connecting rod (6), and the clamping component clamps the upper end of the experimental piece.

4. A crank-rocker type rubber solvent resistance fatigue tester, characterized in that, The device includes a working plate (1), a fixed plate (3) on the working plate (1), a crank rocker assembly on the front side of the fixed plate (3), the crank rocker assembly including a sliding plate (2), a first connecting rod (5) connected to the sliding plate (2), a second connecting rod (6) connected to the first connecting rod (5), a clamping assembly on the second connecting rod (6), a fixed clamping assembly and a lifting clamping assembly (21) on the rear side of the fixed plate (3), and the fixed clamping assembly is located above the lifting clamping assembly (21). The clamping assembly and the fixed clamping assembly hold the experimental piece, and the lifting clamping assembly (21) has an experimental cup, which contains a solvent resistant material. The lifting clamping assembly (21) also includes a clamping assembly, which includes a clamping plate (23). An experimental cup is provided on the clamping plate (23). Several connecting rods are fixedly provided at the lower end of the clamping plate (23). The lower end of the connecting rods is fixedly set on the lifting plate (14). Several sliding grooves (24) are provided on the clamping plate (23). A slider (27) is slidably provided in the sliding groove (24). A clamping rod (13) is fixedly provided on the slider (27). Several recesses are provided on the two side walls of the sliding groove (24). A snap-fit ​​box (28) is symmetrically provided on the slider (27). A first opening is provided on the side wall of the snap-fit ​​box (28) that is far apart from each other. A snap-fit ​​spring (26) is fixedly connected on the side wall of the snap-fit ​​box (28) that is close to each other. The other end of the snap-fit ​​spring (26) is fixedly connected to the snap-fit ​​connector (25). The snap-fit ​​connector (25) is slidably connected to the inner wall of the snap-fit ​​box (28). The snap-fit ​​connector (25) extends out of the snap-fit ​​box (28) from the first opening. The lifting clamping assembly (21) includes a second motor (29), the upper output end of the second motor (29) is fixedly connected to a second threaded rod (30), the second threaded rod (30) is symmetrically provided with threads of opposite directions, a U-shaped plate (32) is threadedly connected to the second threaded rod (30), a moving plate (41) is fixedly connected to the upper end of the U-shaped plate (32), and two symmetrical through slots are opened on the moving plate (41).

5. The crank-rocker type rubber solvent resistance fatigue tester according to claim 4, characterized in that, A protective shell is fixed on the working plate (1). The crank rocker assembly includes a motor (11). The motor (11) is fixed on the working plate (1). The rear output end of the motor (11) is fixedly connected to the first synchronous pulley (10). Two left-right symmetrical tracks (4) are fixed on the front side of the fixed plate (3). A slide plate (2) is slidably mounted on the track (4). A drive rod (9) is hinged to the front side of the slide plate (2). A drive plate (7) is hinged to the upper end of the drive rod (9). The drive rod (9) is hinged to the eccentric position on the rear side of the drive plate (7). A fixed rod is fixed on the front side of the drive plate (7). A second synchronous pulley (8) is fixed on the fixed rod. A synchronous belt is wound around the first synchronous pulley (10) and the second synchronous pulley (8).

6. The crank-rocker type rubber solvent resistance fatigue tester according to claim 5, characterized in that, The upper end of the slide plate (2) is fixedly connected to the first connecting rod (5), and the upper end of the first connecting rod (5) is fixedly connected to the second connecting rod (6) at a 90-degree angle. A concave groove is provided on the fixing plate (3), and the second connecting rod (6) extends backward through the concave groove to the rear side of the fixing plate (3). A clamping component is fixedly provided on the lower surface of the second connecting rod (6), and the clamping component clamps the upper end of the experimental piece.

7. The crank-rocker type rubber solvent resistance fatigue tester according to claim 6, characterized in that, A horizontal plate (43) is also threaded onto the second threaded rod (30). An adjusting rod (31) is hinged to the left and right ends of the horizontal plate (43). The ends of the adjusting rods (31) that are far apart from each other are hinged to the sliding plate (42). The lower end of the sliding plate (42) is slidably connected to the working plate (1). The sliding plate (42) passes through the through groove upward. The sliding plate (42) is provided with an abutting mechanism, which includes an abutting plate (37). Two vertically symmetrical sliding rods (33) are fixedly provided on the side of the abutting plate (37) that is far apart from each other. The sliding rods (33) pass through the sliding plate (42), and the sliding rods (33) and the sliding plate (42) are slidably connected at the passing position. The side of the sliding plate (42) that is far away from the abutting plate (37) is fixedly connected to the power plate (40). A buffer spring (39) is sleeved on the sliding rod (33). One end of the buffer spring (39) is fixedly connected to the abutting plate (37), and the other end of the buffer spring (39) is fixedly connected to the side wall of the sliding plate (42) that is close to each other.

8. The crank-rocker type rubber solvent resistance fatigue tester according to claim 7, characterized in that, The first rack (34) is fixedly connected to the side of the power plate (40) that is far apart from each other. The upper end of the sliding plate (42) is fixedly connected to the protective box (38). Two auxiliary blocks (36) are fixedly provided on the side of the protective box (38) that is far apart from each other. A gear (35) is rotatably connected on the side of the auxiliary blocks (36) that is close to each other. The first rack (34) is meshed with the lower side of the gear (35). The upper side of the gear (35) is meshed with the second rack (44). The second rack (44) extends into the protective box (38). The second rack (44) is slidably connected to the extended position of the protective box (38). The ejector block (45) is fixedly connected on the side of the second rack (44) that is close to each other. The ejector block (45) is slidably connected to the inner wall of the protective box (38). A second opening is provided on the side wall of the protective box (38) that is close to each other. The ejector block (45) extends out of the protective box (38) from the second opening. The protective plate (46) is fixedly connected on the side of the ejector block (45) that is close to each other.

9. The crank-rocker type rubber solvent resistance fatigue tester according to claim 8, characterized in that, The abutment plate (37) is set in an arc shape and is in contact with the experimental cup. The protective plate (46) is also set in an arc shape and is located on the upper side of the experimental cup.

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