A garbage bag bearing capacity testing device

Abstract

The present invention relates to the technical field of garbage bag testing, and in particular to a garbage bag bearing capacity testing device, comprising a bracket, a symmetrically distributed sliding groove is opened at the bottom of the inner wall of the bracket, two inner walls of the sliding grooves are slidably connected with a first sliding block, square holes are penetrated at both ends of the bracket, lifting blocks are slidably connected to the inner walls of the two square holes, a lifting frame is fixedly connected between the two lifting blocks, a second sliding block is symmetrically slidably connected to the inner wall of the lifting frame, a clamping mechanism is arranged at one end of the two first sliding blocks and the second sliding block is close to each other, a fixing mechanism is arranged on the two first sliding blocks, the bracket is provided with a leveling mechanism and a testing mechanism, and a limiting mechanism is arranged at the top of the bracket; the present invention can prevent the breakpoint type garbage bag from being easily broken during the test, and avoid the deviation and change of the stretching direction, so as to prevent the accuracy of the test from being affected.

Description

Technical Field

[0001] The invention relates to the technical field of garbage bag testing, and in particular to a garbage bag bearing capacity testing device. Background Art

[0002] Garbage bags have become an important item in people's lives. They not only greatly facilitate people's lives, but also provide important guarantees for environmental protection. In addition, the use of garbage bags is also conducive to garbage recycling and classification. For example, black garbage bags can be used to store non-recyclable garbage, and pink garbage bags can be used to store recyclable garbage. This way of classifying garbage is both economical and environmentally friendly, and resources can be properly recycled and reused. There are also many types of garbage bags, such as vest-type garbage bags, drawstring-type garbage bags and breakpoint-type garbage bags. Only garbage bags that meet a certain bearing capacity are qualified products. The higher the bearing capacity, the more garbage it can carry, and the better it can avoid rupture during use. Therefore, it is necessary to use testing equipment to test the bearing capacity of the garbage bags after production.

[0003] At present, in the prior art, when the breakpoint type garbage bag is tested for its bearing capacity, wrinkles will appear on the breakpoint type garbage bag. If the wrinkles are not processed, stress concentration points will be formed during the test. During the stretching process, these stress concentration points are more susceptible to damage, causing the breakpoint type garbage bag to break under a tensile force lower than its actual bearing capacity, and may cause changes in the local properties of the breakpoint type garbage bag material, such as reduced ductility and weakened strength, thereby affecting the accuracy of the test;

[0004] In addition, during the test process, power needs to be provided to devices such as sensors, so the test can only be carried out when there is power. When there is a power outage, the test cannot be completed, which leads to limitations in use. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a garbage bag bearing capacity testing device.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a garbage bag bearing capacity testing device, comprising a bracket, a symmetrically distributed slide groove is opened at the bottom of the inner wall of the bracket, two inner walls of the slide grooves are slidably connected with a first slider, square holes are penetrated at both ends of the bracket, lifting blocks are slidably connected to the inner walls of the two square holes, a lifting frame is fixedly connected between the two lifting blocks, a second slider is symmetrically slidably connected to the inner wall of the lifting frame, a clamping mechanism is provided at one end of the two first sliders and the second slider close to each other, a fixing mechanism is provided on the two first sliders, a leveling mechanism and a testing mechanism are provided on the bracket, and a limiting mechanism is provided on the top of the bracket;

[0007] The clamping mechanism is used to clamp the four corners of the breakpoint type garbage bag;

[0008] The leveling mechanism includes a first spring fixedly connected to the slide slot and a second spring fixedly connected to the bottom end of the square hole, the two first springs are used to move the clamping mechanism in the horizontal direction in opposite directions and spread the breakpoint type garbage bag in the horizontal direction, and the two second springs are used to move the upper clamping mechanism in the vertical direction and spread the breakpoint type garbage bag in the vertical direction;

[0009] The fixing mechanism includes a threaded groove opened on the first slider, the inner walls of the two threaded grooves are provided with threaded rods, and the outer walls of the two threaded rods are rotatably connected to one end of the corresponding bracket with a fixing ring, and the fixing ring is used to fix and limit the first slider and the clamping mechanism, and complete the fixation and limitation of the breakpoint type garbage bag.

[0010] Preferably, the end of the threaded rod away from the bracket is fixedly connected to the first hand wheel, the two first sliders and the second sliders are fixedly connected to a sleeve on one side of the clamping mechanism corresponding to the end close to each other, and a sleeve plate is arranged between the two groups of sleeves.

[0011] Preferably, one end of each of the two slide grooves is provided with a through hole, the two through holes are arranged outside the threaded rod, and the two second springs are arranged below the lifting block.

[0012] Preferably, the testing mechanism performs a load-bearing capacity test on the breakpoint-type garbage bag when there is no electricity. The testing mechanism includes a fixing column fixedly connected to the top of the lifting frame and passing through the bracket. A square notch is opened at one end of the fixing column, and a tooth plate is fixedly connected to the square notch.

[0013] Preferably, the testing mechanism also includes a fixed plate fixedly connected to the top of the bracket and symmetrically distributed on one side of the corresponding fixed column, and a rotating shaft is rotatably passed through the two fixed plates, and a gear is fixedly connected between the outer wall of the rotating shaft corresponding to the fixed plate, and the gear is meshingly connected with the gear plate, and a rotating plate is fixedly connected at both ends of the rotating shaft, and the rotating plate is symmetrical about the center of the rotating shaft.

[0014] Preferably, the testing mechanism comprises a lifting column fixedly connected to the top of the lifting block and passing through the bracket, and scale lines are arranged on the outer walls of the two lifting columns for observing the displacement change of the stretching.

[0015] Preferably, the limiting mechanism includes a movable groove opened on the other side of the fixed column corresponding to the top of the bracket, the inner wall of the movable groove is slidably connected with a movable block, the movable block is threadedly connected with a screw rod and passes through the bracket, the screw rod and the movable groove are rotatably connected, and the end of the screw rod away from the bracket is fixedly connected with a second hand wheel.

[0016] Preferably, a storage box is fixedly connected to the top of the moving block, a clamping column is slidably connected to the inner wall of the storage box, a third spring is fixedly connected between the clamping column and the storage box, and a plurality of clamping grooves are formed at one end of the fixed column close to the storage box.

[0017] Preferably, the clamping mechanism includes a first clamping plate fixedly connected to one end of the first slider and the second slider close to each other and a second clamping plate slidably connected to one end of the first slider and the second slider close to each other, the four second clamping plates are rotatably connected to bolts at one end away from the first clamping plate, the outer walls of the four bolts are threadedly connected to fixing blocks, and the four fixing blocks are respectively fixedly connected to one end of the first slider and the second slider close to each other.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The cooperation of the first spring and the second spring in the flattening mechanism can make the breakpoint type garbage bag flat and wrinkle-free, thereby avoiding the formation of stress concentration points on the breakpoint type garbage bag during the tensile test of the bearing capacity, thereby preventing the breakpoint type garbage bag from being easily broken during the test, and preventing the local properties of the breakpoint type garbage bag material from changing, thereby preventing the accuracy of the test from being affected;

[0020] Furthermore, the friction between the fixing ring and the bracket can be increased by the cooperation of the threaded rod and the threaded groove in the fixing mechanism, so that the first slider and the clamping mechanism can be limited and fixed by the fixing ring, so as to avoid the clamping mechanism moving inward when the bearing capacity is stretched to test the tensile strength, thereby avoiding the deviation and change of the stretching direction, and further preventing the accuracy of the bearing capacity test from being affected;

[0021] By moving the fixed column in the test mechanism upward and taking the lifting column with it, the change of the scale on the lifting column can be observed, so that the bearing capacity of the breakpoint type garbage bag can be calculated according to the relevant formula. Therefore, there is no need to use electrical components such as tension sensors during the test, so the test can be carried out without electricity, thereby expanding the application scope of the test equipment and avoiding the situation where the test cannot be carried out during a power outage;

[0022] And when clamping and installing the breakpoint type garbage bag, the clamping column can be inserted into the clamping slot to complete the limit of the fixed column, and then complete the limit fixation of the lifting frame, so that the clamping mechanism can be brought close to each other, and the four corners of the breakpoint type garbage bag can be clamped and fixed. Therefore, the breakpoint type garbage bag is in a relaxed state when clamped, preventing the failure to achieve uniform force transmission during the tensile test of the bearing capacity, thereby causing non-uniform stretching of the breakpoint type garbage bag and affecting the test data;

[0023] The post and the slot can be separated or closed by the screw rod and the moving block. When the post and the slot are separated, the breakpoint type garbage bag can be in a flat and open state before the test, so that the initial data can be recorded, and then the fixed column is moved upward to complete the test. When the post and the slot are closed, they can be flexibly adjusted according to the length of the breakpoint type garbage bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a garbage bag bearing capacity testing device of the present invention when the mold is closed;

[0025] Figure 2 A garbage bag bearing capacity testing device according to the present invention Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 A rear top view of a garbage bag bearing capacity testing device according to the present invention;

[0027] Figure 4 It is a side front bottom view of a garbage bag bearing capacity testing device of the present invention;

[0028] Figure 5 This is a schematic diagram of a support structure of a garbage bag bearing capacity testing device of the present invention;

[0029] Figure 6 A diagram of a clamping mechanism of a garbage bag bearing capacity testing device of the present invention;

[0030] Figure 7 A vertical cross-sectional view of a first sliding block of a garbage bag bearing capacity testing device of the present invention;

[0031] Figure 8 A vertical cross-sectional view of a bracket of a garbage bag bearing capacity testing device of the present invention;

[0032] Fig. 9 A garbage bag bearing capacity testing device according to the present invention Figure 8 Enlarged view of point B in the middle.

[0033] In the figure: 1. bracket; 2. slide groove; 3. first slider; 4. square hole; 5. lifting block; 6. lifting frame; 7. second slider; 8. clamping mechanism; 9. first spring; 10. second spring; 11. threaded groove; 12. threaded rod; 13. fixing ring; 14. first hand wheel; 15. sleeve; 16. sleeve plate; 17. through hole; 18. fixing column; 19. square notch; 20. tooth plate; 21. fixing plate; 22. rotating shaft; 23. gear; 24. rotating plate; 25. lifting column; 26. scale line; 27. moving groove; 28. moving block; 29. ​​screw rod; 30. second hand wheel; 31. storage box; 32. clamping column; 33. third spring; 34. clamping groove. DETAILED DESCRIPTION

[0034] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0035] like Figure 1 - Fig. 9 A garbage bag bearing capacity testing device shown in the figure comprises a bracket 1, a symmetrically distributed slide groove 2 is opened at the bottom of the inner wall of the bracket 1, and the inner walls of the two slide grooves 2 are slidably connected with a first slider 3, square holes 4 are penetrated at both ends of the bracket 1, and the inner walls of the two square holes 4 are slidably connected with a lifting block 5, a lifting frame 6 is fixedly connected between the two lifting blocks 5, and the inner wall of the lifting frame 6 is symmetrically slidably connected with a second slider 7, a clamping mechanism 8 is provided at one end of the two first sliders 3 and the second slider 7 close to each other, a fixing mechanism is provided on the two first sliders 3, a leveling mechanism and a testing mechanism are provided on the bracket 1, and a limiting mechanism is provided at the top of the bracket 1;

[0036] like Figure 1 , Figure 3 - Figure 4 , Figure 6 As shown, the clamping mechanism 8 is used to clamp the four corners of the breakpoint type garbage bag;

[0037] like Figure 1 , Figure 3 - Figure 4 As shown, the leveling mechanism includes a first spring 9 fixedly connected to the slide slot 2 and a second spring 10 fixedly connected to the bottom end of the square hole 4. The two first springs 9 are used to move the clamping mechanism 8 in the opposite directions in the horizontal direction and spread the breakpoint type garbage bag in the horizontal direction. The two second springs 10 are used to move the upper clamping mechanism 8 in the vertical direction and spread the breakpoint type garbage bag in the vertical direction.

[0038] Figure 1 , Figure 4 , Figure 6 - Figure 7 As shown, the fixing mechanism includes a threaded groove 11 opened on the first slider 3, the inner walls of the two threaded grooves 11 are provided with threaded rods 12, and the outer walls of the two threaded rods 12 are rotatably connected to one end of the bracket 1, and the fixing ring 13 is used to fix and limit the first slider 3 and the clamping mechanism 8, and complete the fixation and limitation of the breakpoint type garbage bag.

[0039] Figure 1 , Figure 3 - Figure 4 , Figure 6 - Figure 7As shown, the end of the threaded rod 12 away from the bracket 1 is fixedly connected to the first hand wheel 14, and the two first sliders 3 and the second slider 7 are fixedly connected to the side of the clamping mechanism 8 corresponding to the end close to each other with a sleeve 15, and a sleeve plate 16 is provided between the two groups of sleeves 15. Through the cooperation of the sleeve 15 and the sleeve plate 16, the first slider 3 and the second slider 7 can be connected together, so that they can move left and right at the same time, which is convenient for the horizontal flattening of the breakpoint type garbage bag.

[0040] like Figure 1 , Figure 4 - Figure 5 As shown, one end of the two slide grooves 2 is penetrated by a through hole 17, and the two through holes 17 are arranged outside the threaded rod 12, and the two second springs 10 are arranged below the lifting block 5. The setting of the through hole 17 can make the threaded rod 12 move left and right, so as to complete the limiting fixation of the fixing ring 13.

[0041] like Figure 1 - Figure 4 , Figure 8 As shown, the testing mechanism performs a bearing capacity test on the breakpoint type garbage bag when there is no electricity. The testing mechanism includes a fixing column 18 fixedly connected to the top of the lifting frame 6 and passing through the bracket 1. A square notch 19 is opened at one end of the fixing column 18. A tooth plate 20 is fixedly connected to the square notch 19. The lifting and lowering of the tooth plate 20 can lead to the lifting and lowering of the fixing column 18. Therefore, the bearing capacity test of the breakpoint type garbage bag can be completed in the absence of electricity.

[0042] like Figure 2 As shown, the testing mechanism also includes a fixed plate 21 fixedly connected to the top of the bracket 1 and symmetrically distributed on one side of the corresponding fixed column 18. A rotating shaft 22 is rotatably passed through the two fixed plates 21. A gear 23 is fixedly connected between the outer wall of the rotating shaft 22 corresponding to the fixed plate 21. The gear 23 is meshingly connected with the toothed plate 20. Rotating plates 24 are fixedly connected at both ends of the rotating shaft 22. The rotating plates 24 are symmetrical about the center of the rotating shaft 22. Through the setting of the rotating plates 24, both hands can be used alternately, so it is more convenient to apply force.

[0043] like Figure 1 - Figure 4 As shown, the test mechanism includes a lifting column 25 fixedly connected to the top of the lifting block 5 and passing through the bracket 1. Scale lines 26 are provided on the outer walls of the two lifting columns 25 for observing the displacement change of the stretching. When the lifting frame 6 moves up and down, it will move the lifting block 5 up and down, thereby moving the lifting columns 25 up and down, so that the value change of the scale line 26 can be observed, thereby measuring the bearing capacity.

[0044] like Figure 8As shown, the limiting mechanism includes a moving groove 27 opened on the other side of the fixed column 18 corresponding to the top of the bracket 1, and a moving block 28 is slidably connected to the inner wall of the moving groove 27. A screw rod 29 is threadedly connected to the moving block 28 and passes through the bracket 1. The screw rod 29 and the moving groove 27 are rotatably connected, and a second hand wheel 30 is fixedly connected to the end of the screw rod 29 away from the bracket 1. The screw rod 29 is rotated by rotating the second hand wheel 30 to rotate it, and the moving block 28 can be moved by the thread effect of the screw rod 29.

[0045] like Figure 8 As shown, a storage box 31 is fixedly connected to the top of the moving block 28, a card column 32 is slidably connected to the inner wall of the storage box 31, a third spring 33 is fixedly connected between the card column 32 and the storage box 31, and a plurality of card slots 34 are provided at one end of the fixed column 18 close to the storage box 31. The storage box 31 is moved by the moving block 28, so that the card column 32 can be inserted into or out of the card slot 34. When the card column 32 is inserted into the card slot 34, the third spring 33 can be used to store the card column 32 in the storage box 31, so that the distance between the clamping mechanisms 8 on the upper and lower sides can be changed.

[0046] like Figure 6 As shown, the clamping mechanism 8 includes a first clamping plate fixedly connected to one end of the first slider 3 and the second slider 7 close to each other and a second clamping plate slidably connected to one end of the first slider 3 and the second slider 7 close to each other, the four second clamping plates are rotatably connected to the ends away from the first clamping plates, the outer walls of the four bolts are threadedly connected to fixing blocks, the four fixing blocks are respectively fixedly connected to the ends of the first slider 3 and the second slider 7 close to each other, the second clamping plate can be brought close to the first clamping plate by rotating the bolts, thereby completing the fixation of the breakpoint type garbage bag, and the first clamping plate and the second clamping plate are provided with alternatingly arranged teeth to increase friction.

[0047] Working principle: To test the bearing capacity of the breakpoint garbage bag, firstly, the second hand wheel 30 is rotated to rotate the screw rod 29, so that the moving block 28 and the storage box 31 are moved in the direction close to the fixed column 18, so that the clamping column 32 is inserted into the clamping groove 34, the fixed column 18 is fixed, and the first slider 3 is moved in the direction close to each other, and then the first hand wheel 14 is rotated to rotate the threaded rod 12, so that the length of the threaded rod 12 outside is shortened, so that the fixing ring 13 is close to the bracket 1 to complete the limit fixation of the first slider 3, and then the clamping mechanism 8 is close to each other, and the breakpoint garbage bag is installed on the clamping mechanism 8, and the breakpoint garbage bag is in a relaxed state at this time;

[0048] After installation, the first hand wheel 14 is rotated in the reverse direction to separate the fixing ring 13 and the bracket 1, thereby releasing the limit fixation of the first slider 3. At the same time, the second hand wheel 30 is rotated in the reverse direction to make the clamping column 32 leave the range of the clamping groove 34. At this time, the breakpoint type garbage bag is in an open and flat state under the cooperation of the first spring 9 and the second spring 10 to prevent wrinkles and avoid affecting the subsequent load-bearing capacity test.

[0049] Then, the first hand wheel 14 is rotated again to make the fixing ring 13 fit tightly on the bracket 1, and the fixing ring 13 is limited and fixed by friction force, thereby completing the fixing and limiting of the first slider 3, and limiting the second slider 7 by the sleeve 15 and the sleeve plate 16, so that the clamping mechanism 8 can only move in the vertical direction, thereby preventing the tensile direction from being offset and changing, thereby ensuring the accuracy of the bearing capacity test;

[0050] Afterwards, the rotating plate 24 drives the rotating shaft 22 to rotate, thereby driving the gear 23 to rotate. Since the gear 23 is meshed with the tooth plate 20, the tooth plate 20 can be moved upward, thereby driving the fixed column 18 and the lifting frame 6 upward, and thus driving the upper clamping mechanism 8 upward, so that the breakpoint type garbage bag can be subjected to a tensile test, and during the stretching process, the changes of the scale line 26 on the lifting column 25 are observed, and when the breakpoint type garbage bag breaks, the value of the scale line 26 is recorded, and the calculation of the tensile change is completed through the relevant calculation formula, so as to obtain the bearing capacity and complete the test. During the test, no electricity is required, so the test can be carried out without electricity, thereby expanding the scope of application.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A garbage bag bearing capacity testing device, comprising a bracket (1), characterized in that: The bottom of the inner wall of the bracket (1) is provided with symmetrically distributed sliding grooves (2), the inner walls of the two sliding grooves (2) are both slidably connected with a first slider (3), both ends of the bracket (1) are penetrated with square holes (4), the inner walls of the two square holes (4) are both slidably connected with a lifting block (5), a lifting frame (6) is fixedly connected between the two lifting blocks (5), the inner wall of the lifting frame (6) is symmetrically slidably connected with a second slider (7), the two first sliders (3) and the second slider (7) are both provided with a clamping mechanism (8) at one end close to each other, and the two first sliders (3) are both provided with a fixing mechanism, the bracket (1) is provided with a leveling mechanism and a testing mechanism, and the top of the bracket (1) is provided with a limiting mechanism; The clamping mechanism (8) is used to clamp the four corners of the breakpoint type garbage bag; The leveling mechanism comprises a first spring (9) fixedly connected to the slide groove (2) and a second spring (10) fixedly connected to the bottom end of the square hole (4), the two first springs (9) being used to move the clamping mechanism (8) in opposite directions in the horizontal direction and spread the breakpoint type garbage bag in the horizontal direction, and the two second springs (10) being used to move the upper clamping mechanism (8) in the vertical direction and spread the breakpoint type garbage bag in the vertical direction; The fixing mechanism comprises a threaded groove (11) formed on the first sliding block (3), the inner walls of the two threaded grooves (11) are provided with threaded rods (12), and the outer walls of the two threaded rods (12) are rotatably connected to one end of the bracket (1), and the fixing ring (13) is used to fix and limit the first sliding block (3) and the clamping mechanism (8), and complete the fixation and limit of the breakpoint type garbage bag.

2. A garbage bag bearing capacity testing device according to claim 1, characterized in that: The end of the threaded rod (12) away from the bracket (1) is fixedly connected to a first hand wheel (14), and the two first sliders (3) and the second sliders (7) close to each other are fixedly connected to a sleeve (15) on one side of the clamping mechanism (8), and a sleeve plate (16) is provided between the two sets of sleeves (15).

3. A garbage bag bearing capacity testing device according to claim 1, characterized in that: A through hole (17) is formed at one end of each of the two slide grooves (2); the two through holes (17) are arranged outside the threaded rod (12); and the two second springs (10) are arranged below the lifting block (5).

4. A garbage bag bearing capacity testing device according to claim 1, characterized in that: The testing mechanism performs a load-bearing capacity test on the breakpoint-type garbage bag when there is no electricity. The testing mechanism comprises a fixing column (18) fixedly connected to the top of the lifting frame (6) and penetrating the bracket (1). A square notch (19) is formed at one end of the fixing column (18), and a toothed plate (20) is fixedly connected to the square notch (19).

5. A garbage bag bearing capacity testing device according to claim 4, characterized in that: The testing mechanism further comprises a fixed plate (21) fixedly connected to a top end of the bracket (1) and symmetrically distributed on one side of the corresponding fixed column (18); a rotating shaft (22) is rotatably passed through the two fixed plates (21); a gear (23) is fixedly connected between the outer wall of the rotating shaft (22) and the corresponding fixed plate (21); the gear (23) is meshingly connected to the toothed plate (20); and rotating plates (24) are fixedly connected to both ends of the rotating shaft (22); the rotating plates (24) are symmetrical about the center of the rotating shaft (22).

6. A garbage bag bearing capacity testing device according to claim 5, characterized in that: The testing mechanism comprises a lifting column (25) fixedly connected to the top of the lifting block (5) and penetrating the bracket (1), and scale lines (26) are provided on the outer walls of the two lifting columns (25) for observing the displacement change of the stretching.

7. The garbage bag bearing capacity testing device according to claim 1, characterized in that: The limiting mechanism comprises a moving groove (27) provided on the other side of the top end of the bracket (1) corresponding to the fixed column (18); a moving block (28) is slidably connected to the inner wall of the moving groove (27); a screw rod (29) is threadedly connected to the moving block (28) and passes through the bracket (1); the screw rod (29) and the moving groove (27) are rotatably connected; and a second hand wheel (30) is fixedly connected to one end of the screw rod (29) away from the bracket (1).

8. The garbage bag bearing capacity testing device according to claim 7, characterized in that: The top of the moving block (28) is fixedly connected to a storage box (31), the inner wall of the storage box (31) is slidably connected to a clamping column (32), a third spring (33) is fixedly connected between the clamping column (32) and the storage box (31), and a plurality of clamping grooves (34) are formed at one end of the fixed column (18) close to the storage box (31).

9. The garbage bag bearing capacity testing device according to claim 1, characterized in that: The clamping mechanism (8) comprises a first clamping plate fixedly connected to one end of the first slider (3) and the second slider (7) close to each other, and a second clamping plate slidably connected to one end of the first slider (3) and the second slider (7) close to each other, four second clamping plates are rotatably connected to bolts at one end away from the first clamping plate, and the outer walls of the four bolts are threadedly connected to fixing blocks, and the four fixing blocks are respectively fixedly connected to one end of the first slider (3) and the second slider (7) close to each other.

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