Plastic tarpaulin strength tensile test device

Abstract

The utility model relates to the technical field of plastic tarpaulin, and discloses a plastic tarpaulin strength tensile testing device which comprises a base, a supporting frame and a controller, the supporting frame is fixedly connected to the top of the base, the controller is fixedly installed on one side of the supporting frame, and a first air cylinder is fixedly installed on the top of the supporting frame; by arranging the clamping mechanism, one end of the plastic tarpaulin can be placed in a first clamping frame, meanwhile, a second air cylinder is started to push a first pressing plate to clamp and fix the plastic tarpaulin, then the other end of the plastic tarpaulin is placed in two second clamping frames, fingers are placed in finger control grooves, a twisting block is rotated, and the plastic tarpaulin can be clamped and fixed; the screwing block can drive the threaded rod to rotate in the threaded hole, the threaded rod can push the bearing and the second pressing plate to move towards the side close to the protruding block, finally, the plastic tarpaulin can be clamped between the multiple grooves and the protruding block to be in a snake shape, and the stability of the plastic tarpaulin is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic tarpaulin, specifically to a plastic tarpaulin strength tensile testing device. BACKGROUND

[0002] Plastic tarpaulin (or waterproof cloth) is a kind of waterproof material with high strength, good toughness and softness, commonly used as canvas (oil painting cloth), terylene with polyurethane coating or made into polyethylene plastic. Tarpaulin usually has a strong grommet at the corner or edge to facilitate the use of rope binding, suspension or covering. To ensure that the strength of plastic tarpaulin meets the standard, users will use a tensile testing device to detect it.

[0003] After searching, a plastic tarpaulin strength tensile testing device (publication number: CN219830622U) is disclosed in Chinese patent literature. It includes a first fixed plate and a third fixed plate, a second fixed plate is provided between the first fixed plate and the third fixed plate, a pull rod is provided on the third fixed plate, one end of the pull rod is provided with a tension sensor and a connecting plate, the other end is provided with a first air cylinder, and it also includes a clamping part located above the first fixed plate and the second fixed plate. The clamping part includes an elastic element, and the clamping part is driven by a power source to move downward along the vertical direction to clamp the plastic tarpaulin and strengthen the clamping force through the elastic action of the elastic element. The utility model clamps the plastic tarpaulin by setting the clamping part and driving it by the power source, and the clamping part will squeeze the elastic element after being squeezed, and the elastic element will form a squeezing force on the clamping part in the opposite direction.

[0004] During the detection process of plastic tarpaulin, the two ends of the plastic tarpaulin need to be fixed by the tensile testing device, then the tensile testing device will pull one end for stretching, and the value obtained by the tension sensor will be used to judge whether the strength of the plastic tarpaulin meets the standard. Because the tarpaulin itself is relatively smooth, the conventional clamping and fixing method is difficult to ensure the stability of clamping, especially the end pulled for stretching, the plastic tarpaulin is easy to fall off, which affects the detection efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a plastic tarpaulin strength tensile testing device to solve the problems raised in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a plastic tarpaulin strength tensile testing device, comprising a base, a support frame, and a controller. The support frame is fixedly connected to the top of the base, and the controller is fixedly installed on one side of the support frame. A first cylinder is fixedly installed on the top of the support frame. The output end of the first cylinder extends through the interior of the support frame and is fixedly connected to a traction rod. A traction block is provided at one end of the traction rod. The connection between the traction rod and the traction block is fixedly connected by a tension sensor. A clamping mechanism is provided on one side of the tension sensor.

[0007] The clamping mechanism includes a first clamping frame fixedly installed on one side of the support frame, a second cylinder fixedly connected to one side of the first clamping frame, a first pressure plate fixedly connected to the output end of the second cylinder, a second clamping frame provided on one side of the traction block, a protrusion fixedly connected to the inner wall of the second clamping frame, a second pressure plate provided on one side of the clamping frame, a groove for cooperating with the protrusion on one side of the second pressure plate, a threaded rod threadedly connected to one side of the second clamping frame, one end of the threaded rod penetrating to one side of the second clamping frame and rotatably connected to one side of the second pressure plate through a bearing, and a threaded hole for cooperating with the threaded rod on one side of the second clamping frame.

[0008] A spacing adjustment mechanism is fixedly installed on the top of the second clamping frame, which can adjust the distance between the two second clamping frames according to the width of the plastic tarpaulin.

[0009] Preferably, the spacing adjustment mechanism includes a connecting frame fixedly connected to the top of the second clamping frame, a linkage block is provided at the top of the connecting frame, a pull ring is fixedly connected to the top of the linkage block, a positioning rod is fixedly connected to the bottom of the linkage block, the bottom of the positioning rod extends through to the bottom of the connecting frame, a plurality of positioning holes are provided at the top of the traction block for use with the positioning rod, a guide rod is fixedly connected to the bottom of the linkage block, and a guide hole is provided at the top of the connecting frame for use with the guide rod.

[0010] Preferably, a tension spring is fitted on the surface of the guide rod, the bottom of the tension spring is fixedly connected to the top of the connecting frame, and the top of the tension spring is fixedly connected to the bottom of the linkage block.

[0011] Preferably, a dovetail block is fixedly connected to one side of the second clamping frame, and a dovetail groove is provided on one side of the traction block to cooperate with the dovetail groove.

[0012] Preferably, one end of the threaded rod is fixedly connected to a screwing block, and the screwing block has four control slots on its circumferential side.

[0013] Preferably, a limiting block is fixedly connected to one side of the second pressure plate, and a limiting groove is provided on the inner wall of the second clamping frame to cooperate with the limiting block.

[0014] Preferably, the number of the bumps is several and the surface is fixedly connected with a rubber pad.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model, by setting up a clamping mechanism, enables the plastic tarpaulin to be clamped and fixed by placing one end of the plastic tarpaulin into the first clamping frame and simultaneously activating the second cylinder to push the first pressure plate. Then, the other end of the plastic tarpaulin is placed in two second clamping frames, and a finger is placed into the control groove. Rotating the turning block will cause the threaded rod to rotate in the threaded hole. The threaded rod will push the bearing and the second pressure plate to move towards the side closer to the protrusion. Finally, the plastic tarpaulin will be clamped between multiple grooves and protrusions in a serpentine shape, effectively improving the stability of the plastic tarpaulin.

[0017] 2. This utility model, by setting a spacing adjustment mechanism, allows the linkage block and positioning rod to move upward by pulling the pull ring upward, causing the positioning rod to leave the positioning hole and releasing the restriction on the connecting frame and the second clamping frame. The position of the connecting frame and the second clamping frame can then be adjusted along the trajectory of the dovetail block and the dovetail groove. After moving to the appropriate position, releasing the pull ring causes the tension force generated by the tension spring to move the linkage block and the positioning rod downward, causing the positioning rod to enter the corresponding positioning hole. This completes the adjustment of the distance between the two second clamping frames, matching the width of the plastic tarpaulin, thereby improving the stability of the clamping. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a perspective view of a partial structure of the present invention;

[0020] Figure 3 This is a perspective view of the second clamping frame and the connecting frame in this utility model;

[0021] Figure 4 This is a sectional perspective view of the second clamping frame and the connecting frame in this utility model;

[0022] Figure 5 This is a perspective view of a partial structure of the mid-spacing adjustment mechanism of this utility model.

[0023] Figure 6 This is a schematic diagram of the plastic tarpaulin clamping method in this utility model.

[0024] In the diagram: 1. Base; 2. Support frame; 3. Controller; 4. First cylinder; 5. Traction rod; 6. Traction block; 7. Tension sensor; 8. First clamping frame; 9. Second cylinder; 10. First pressure plate; 11. Second clamping frame; 12. Protrusion; 13. Second pressure plate; 14. Groove; 15. Threaded rod; 16. Connecting frame; 17. Linkage block; 18. Pull ring; 19. Positioning rod; 20. Positioning hole; 21. Guide rod; 22. Guide hole; 23. Tension spring; 24. Dovetail block; 25. Dovetail groove; 26. Limiting block; 27. Limiting groove; 28. Rubber pad; 29. ​​Threaded hole; 30. Tightening block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 - Figure 6 As shown,

[0027] Example 1:

[0028] A tensile strength testing device for plastic tarpaulin includes a base 1, a support frame 2, and a controller 3. The support frame 2 is fixedly connected to the top of the base 1, and the controller 3 is fixedly installed on one side of the support frame 2. A first cylinder 4 is fixedly installed on the top of the support frame 2. The output end of the first cylinder 4 extends through the interior of the support frame 2 and is fixedly connected to a traction rod 5. A traction block 6 is provided at one end of the traction rod 5. The connection between the traction rod 5 and the traction block 6 is fixedly connected by a tension sensor 7. A clamping mechanism is provided on one side of the tension sensor 7.

[0029] The clamping mechanism includes a first clamping frame 8 fixedly installed on one side of the support frame 2, a second cylinder 9 fixedly connected to one side of the first clamping frame 8, a first pressure plate 10 fixedly connected to the output end of the second cylinder 9, a second clamping frame 11 provided on one side of the traction block 6, a protrusion 12 fixedly connected to the inner wall of the second clamping frame 11, a second pressure plate 13 provided on one side of the clamping frame, a groove 14 for cooperating with the protrusion 12 on one side of the second pressure plate 13, a threaded rod 15 threadedly connected to one side of the second clamping frame 11, one end of the threaded rod 15 penetrating to one side of the second clamping frame 11 and rotatably connected to one side of the second pressure plate 13 through a bearing, and a threaded hole 29 for cooperating with the threaded rod 15 on one side of the second clamping frame 11.

[0030] The spacing adjustment mechanism is fixedly installed on the top of the second clamping frame 11 and can adjust the distance between the two second clamping frames 11 according to the width of the plastic tarpaulin.

[0031] In this embodiment, considering that the tarpaulin itself is relatively smooth, conventional clamping and fixing methods are difficult to ensure clamping stability, especially at the traction and stretching end, where the plastic tarpaulin is prone to detachment, thus affecting the detection efficiency. Therefore, by setting up a clamping mechanism, one end of the plastic tarpaulin can be placed inside the first clamping frame 8, while the second cylinder 9 is activated to push the first pressure plate 10 to clamp and fix the plastic tarpaulin. Then, the other end of the plastic tarpaulin is placed in the two second clamping frames 11, and a finger is placed inside the control groove. Rotating the turning block 30 will cause the threaded rod 15 to rotate in the threaded hole 29. The threaded rod 15 will push the bearing and the second pressure plate 13 to move towards the side closer to the protrusion 12. Figure 6 As shown, the plastic tarpaulin is finally held between multiple grooves 14 and protrusions 12 in a serpentine shape, which effectively improves the stability of the plastic tarpaulin.

[0032] One end of the threaded rod 15 is fixedly connected to a screwing block 30, and four control slots are provided on the circumferential side of the screwing block 30.

[0033] In this embodiment, by setting the twisting block 30 and the control groove, a leverage point for the user to grasp is provided, so that the user can easily rotate the threaded rod 15, which facilitates driving.

[0034] A limiting block 26 is fixedly connected to one side of the second pressure plate 13, and a limiting groove 27 that cooperates with the limiting block 26 is provided on the inner wall of the second clamping frame 11.

[0035] In this embodiment, by setting the limiting block 26 and the limiting groove 27, when the threaded rod 15 drives the second pressure plate 13, the second pressure plate 13 can only slide along the trajectory of the limiting block 26 and the limiting groove 27, which plays the role of limiting the movement trajectory and improving stability.

[0036] The number of protrusions 12 is several, and a rubber pad 28 is fixedly connected to the surface.

[0037] In this embodiment, by setting the protrusion 12, the plastic tarpaulin can be clamped in a serpentine shape through the cooperation between the protrusion 12 and the groove 14, which effectively improves the stability of clamping.

[0038] Example 2:

[0039] Based on Embodiment 1, the clamping mechanism in this embodiment can clamp the plastic tarpaulin, improve the stability of the clamping, and prevent it from falling off. However, considering that the width of the plastic tarpaulin is different, if the distance between the two second clamping frames 11 is not matched, clamping cannot be performed. The spacing adjustment mechanism in this application includes a connecting frame 16 fixedly connected to the top of the second clamping frame 11. A linkage block 17 is provided on the top of the connecting frame 16. A pull ring 18 is fixedly connected to the top of the linkage block 17. A positioning rod 19 is fixedly connected to the bottom of the linkage block 17. The bottom of the positioning rod 19 extends through to the bottom of the connecting frame 16. A plurality of positioning holes 20 that cooperate with the positioning rod 19 are opened on the top of the traction block 6. A guide rod 21 is fixedly connected to the bottom of the linkage block 17. A guide hole 22 that cooperates with the guide rod 21 is opened on the top of the connecting frame 16.

[0040] In this embodiment, by setting a spacing adjustment mechanism, the linkage block 17 and the positioning rod 19 can be moved upward by pulling the pull ring 18 upward, so that the positioning rod 19 leaves the interior of the positioning hole 20, thereby releasing the restriction on the connecting frame 16 and the second clamping frame 11 and other structures. The positions of the connecting frame 16 and the second clamping frame 11 can then be adjusted along the trajectory of the dovetail block 24 and the dovetail groove 25. After moving to the appropriate position, the pull ring 18 is released, and the tension generated by the tension spring 23 will drive the linkage block 17 and the positioning rod 19 downward, causing the positioning rod 19 to enter the interior of the corresponding positioning hole 20, thereby completing the adjustment of the distance between the two second clamping frames 11 to match the width of the plastic tarpaulin, thus improving the stability of the clamping.

[0041] A tension spring 23 is fitted on the surface of the guide rod 21. The bottom of the tension spring 23 is fixedly connected to the top of the connecting frame 16, and the top of the tension spring 23 is fixedly connected to the bottom of the linkage block 17.

[0042] In this embodiment, by setting a tension spring 23, after the pull ring 18 is released, the tension generated by the tension spring 23 moves the linkage block 17 and the positioning rod 19 downward, so that the positioning rod 19 enters the corresponding positioning hole 20, which plays a role in resetting.

[0043] A dovetail block 24 is fixedly connected to one side of the second clamping frame 11, and a dovetail slide groove 25 that is used in conjunction with the dovetail groove is provided on one side of the traction block 6.

[0044] In this embodiment, by setting dovetail block 24 and dovetail slide 25, an adjustable movement trajectory can be provided for the second clamping frame 11 and other structures, so that they can only be horizontally adjusted along the trajectory of dovetail block 24 and dovetail slide 25.

[0045] Working principle: The user places one end of the plastic tarpaulin into the first clamping frame 8, while simultaneously activating the second cylinder 9 to push the first pressure plate 10 to clamp and fix the plastic tarpaulin. Then, the user places the other end of the plastic tarpaulin into the two second clamping frames 11, inserts a finger into the control slot, and rotates the turning block 30. The turning block 30 causes the threaded rod 15 to rotate within the threaded hole 29. The threaded rod 15 then pushes the bearing and the second pressure plate 13 to move closer to the protrusion 12. Figure 6 As shown, the plastic tarpaulin will finally be clamped between multiple grooves 14 and protrusions 12 in a serpentine shape, which effectively improves the stability of the plastic tarpaulin.

[0046] Simultaneously, by pulling the pull ring 18 upwards, the linkage block 17 and positioning rod 19 can be moved upwards, causing the positioning rod 19 to leave the interior of the positioning hole 20. This releases the restriction on the connecting frame 16 and the second clamping frame 11, allowing the position of the connecting frame 16 and the second clamping frame 11 to be adjusted along the trajectory of the dovetail block 24 and the dovetail groove 25. After moving to the appropriate position, the pull ring 18 is released, and the tension generated by the tension spring 23 will drive the linkage block 17 and positioning rod 19 downwards, causing the positioning rod 19 to enter the corresponding positioning hole 20. This completes the adjustment of the distance between the two second clamping frames 11, matching it with the width of the plastic tarpaulin, thereby improving the stability of the clamping.

[0047] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic tarpaulin strength tensile test device, comprising a base (1), a support frame (2) and a controller (3), the support frame (2) is fixedly connected to the top of the base (1), and the controller (3) is fixedly installed on one side of the support frame (2), characterized in that: The top of the support frame (2) is fixedly provided with a first cylinder (4), the output end of the first cylinder (4) penetrates into the inside of the support frame (2), and a traction rod (5) is fixedly connected, one end of the traction rod (5) is provided with a traction block (6), the traction rod (5) and the traction block (6) are fixedly connected through a tension sensor (7), and one side of the tension sensor (7) is provided with a clamping mechanism; The clamping mechanism comprises a first clamping frame (8) fixedly installed on one side of the support frame (2), one side of the first clamping frame (8) is fixedly connected with a second cylinder (9), the output end of the second cylinder (9) is fixedly connected with a first pressing plate (10), one side of the traction block (6) is provided with a second clamping frame (11), the inner wall of the second clamping frame (11) is fixedly connected with a protruding block (12), one side of the clamping frame is provided with a second pressing plate (13), one side of the second pressing plate (13) is provided with a groove (14) matched with the protruding block (12), one side of the second clamping frame (11) is threadedly connected with a threaded rod (15), one end of the threaded rod (15) penetrates into one side of the second clamping frame (11), and the threaded rod (15) is rotatably connected with one side of the second pressing plate (13) through a bearing, and one side of the second clamping frame (11) is provided with a threaded hole (29) matched with the threaded rod (15). The spacing adjusting mechanism is fixedly arranged on the top of the second clamping frame (11), and the distance between the two second clamping frames (11) can be adjusted according to the width of the plastic tarpaulin.

2. A device for strength tensile testing of a plastic tarpaulin according to claim 1, characterized in that: The spacing adjusting mechanism comprises a connecting frame (16) fixedly connected to the top of the second clamping frame (11), the top of the connecting frame (16) is provided with a linkage block (17), the top of the linkage block (17) is fixedly connected with a pull ring (18), the bottom of the linkage block (17) is fixedly connected with a positioning rod (19), the bottom of the positioning rod (19) penetrates into the bottom of the connecting frame (16), the top of the traction block (6) is provided with a plurality of positioning holes (20) matched with the positioning rod (19), the bottom of the linkage block (17) is fixedly connected with a guide rod (21), and the top of the connecting frame (16) is provided with a guide hole (22) matched with the guide rod (21).

3. A device for strength tensile testing of a plastic tarpaulin according to claim 2, characterized in that: The surface of the guide rod (21) is sleeved with a tension spring (23), the bottom of the tension spring (23) is fixedly connected with the top of the connecting frame (16), and the top of the tension spring (23) is fixedly connected with the bottom of the linkage block (17).

4. A device for strength tensile testing of a plastic tarpaulin according to claim 1, characterized in that: One side of the second clamping frame (11) is fixedly connected with a dovetail block (24), and one side of the traction block (6) is provided with a dovetail sliding groove (25) matched with the dovetail groove.

5. A device for strength tensile testing of a plastic tarpaulin according to claim 1, characterized in that: One end of the threaded rod (15) is fixedly connected with a twisting block (30), and four finger grooves are formed in the circumferential side of the twisting block (30).

6. A tensile strength testing device for plastic tarpaulins as defined in claim 1, wherein: One side of the second pressing plate (13) is fixedly connected with a limiting block (26), and the inner wall of the second clamping frame (11) is provided with a limiting groove (27) matched with the limiting block (26).

7. A tensile strength testing device for plastic tarpaulins as defined in claim 1, wherein: The number of the convex blocks (12) is several, and rubber pads (28) are fixedly connected on the surfaces.

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