Geosynthetic material tensile fixture and tensile experiment device

Abstract

The utility model provides a geosynthetic material tensile fixture and a tensile experiment device. The geosynthetic material stretching clamp comprises a supporting frame, a connecting end is fixedly arranged at the top of the supporting frame, a winding roller is rotationally arranged in the supporting frame, a handle is arranged at one end of the winding roller, an insertion opening is formed in the winding roller in the radial direction in a penetrating mode, clamping plates corresponding to the winding roller are symmetrically arranged on the two sides of the winding roller, and a clamping groove is formed in the middle of the clamping plate. The supporting frame is provided with a clamping adjusting mechanism for driving the clamping plates to be close to or away from the winding roller. According to the utility model, the end part of the geosynthetic material wide strip is wound on the outer side of the wind-up roll and is clamped and fixed through the clamping plate, so that the friction force between the end part of the geosynthetic material wide strip and the wind-up roll is increased, the connection is stable and not easy to slip, and the error of experimental data can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tensile test equipment, and in particular relates to a geosynthetics tensile fixture and a tensile test device. Background Art

[0002] Geosynthetics is a general term for synthetic materials used in civil engineering. As a civil engineering material, it is made of artificially synthesized polymers and made into various types of products, which are placed inside, on the surface or between various soil bodies to strengthen or protect the soil.

[0003] When conducting tensile tests on geosynthetics, current fixtures are mostly used to clamp and fix the geosynthetics on both sides of their ends. For example, Chinese utility model patent document with authorization announcement number CN207923600U discloses a geosynthetics pneumatic tensile test fixture, which clamps and fixes the geosynthetics by cooperating with a left clamp and a right clamp. In this fixing method, the fixture and the geosynthetics are prone to slippage, which leads to experimental data errors.

[0004] Therefore, it is necessary to design a geosynthetics tensile fixture and tensile test device that can avoid slipping and reduce experimental data errors to solve the current technical problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the utility model provides a geosynthetics tensile fixture and a tensile test device which can avoid slipping and reduce the error of experimental data.

[0006] The technical solution of the utility model is: a geosynthetics stretching clamp, comprising a support frame, a connecting end is fixedly arranged on the top of the support frame, a winding roller is rotatably arranged inside the support frame, a handle is arranged at one end of the winding roller, a socket is opened on the winding roller along its radial direction, corresponding clamping plates are symmetrically arranged on both sides of the winding roller, and a clamping adjustment mechanism for driving the clamping plates to approach or move away from the winding roller is arranged on the support frame.

[0007] The clamping plate is slidably connected to the support frame, the clamping adjustment mechanism has a screw, a screw is rotatably arranged on the side of the clamping plate away from the winding roller, the screw is threadedly connected to the support frame, and a hand wheel is fixedly arranged on the end of the screw away from the winding roller.

[0008] Two guide rods are symmetrically arranged on one side of the clamping plate away from the winding roller, and the guide rods are slidably connected to the support frame.

[0009] A locking bolt is arranged on one side of the end of the clamping plate close to the winding roller, and a locking groove matching the locking bolt is opened on the outer side of the winding roller.

[0010] One end of the locking bolt corresponding to the locking groove is provided with a chamfer.

[0011] The support frame has a rear support plate and a front support plate that are parallel to each other. Side plates are fixedly arranged between the two ends of the rear support plate and the front support plate. The top of the rear support plate is fixedly provided with a top plate, and the connection end is arranged on the top of the top plate.

[0012] The clamping plate is an arc-shaped plate structure that matches the outer side of the winding roller.

[0013] A tensile test device includes the geosynthetic material tensile fixture as described in any one of the above.

[0014] Advantages of the present utility model: In the present utility model, the end of the wide strip of geosynthetic material passes through the winding roller through the socket, and then the winding roller is rotated by the handle to wind the end of the wide strip of geosynthetic material on the outer side of the winding roller. Then, the clamping plate is adjusted through the clamping adjustment mechanism, so that the clamping plates on both sides of the winding roller clamp and fix the winding roller and the wide strip of geosynthetic material on its outer side. The end of the wide strip of geosynthetic material is wound around the outer side of the winding roller and is clamped and fixed by the clamping plate at the same time, so that there is an increased frictional force between the end of the wide strip of geosynthetic material and the winding roller, the connection is stable and not prone to slipping, and the experimental data error can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is one of the structural schematic diagrams of the geosynthetic material tensile fixture in the present utility model.

[0016] Figure 2 is another structural schematic diagram of the geosynthetic material tensile fixture in the present utility model.

[0017] Figure 3 is Figure 2 the sectional view at A-A in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Now, various exemplary embodiments of the present utility model will be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and does not constitute any limitation to the present utility model and its application or use. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present utility model thorough and complete, and to fully convey the scope of the present utility model to those skilled in the art. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values described in these embodiments should be construed as merely exemplary and not as limitations.

[0019] In the present utility model, words such as "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different parts. Words such as "comprising" or "including" mean that the elements before this word cover the elements listed after this word, and do not exclude the possibility of also covering other elements. Words such as "upper", "lower", "left", "right" are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0020] As Figures 1 to 3 shown, a geosynthetic material tensile fixture includes a support frame 2. A connection end 3 is fixedly arranged at the top of the support frame 2, and the connection end 3 is used for connecting with a tensile test device. A winding roller 1 is rotatably arranged inside the support frame 2. One end of the winding roller 1 is provided with a handle 12. A socket 11 is radially penetrated through the winding roller 1 along its axis. On both sides of the winding roller 1, corresponding clamping plates 4 are symmetrically arranged. A clamping adjustment mechanism 5 for driving the clamping plates 4 to approach or move away from the winding roller is arranged on the support frame 2; in this embodiment, before the experiment of the geosynthetic material, it is cut into wide strips, and both ends of the wide strip of the geosynthetic material are respectively connected with two fixtures. Specifically, the end of the wide strip of the geosynthetic material penetrates through the winding roller 1 from the socket 11, and then the winding roller 1 is rotated through the handle 12 to wind the end of the wide strip of the geosynthetic material on the outside of the winding roller 1. Then, the clamping plates 4 are adjusted through the clamping adjustment mechanism 5, so that the clamping plates 4 on both sides of the winding roller 1 clamp and fix the winding roller 1 and the wide strip of the geosynthetic material on its outside. The end of the wide strip of the geosynthetic material is wound around the outside of the winding roller 1, and at the same time, it is clamped and fixed through the clamping plates 4, so that there is a large friction force between the end of the wide strip of the geosynthetic material and the winding roller 1, the connection is stable and not easy to slip, and the experimental data error can be reduced.

[0021] In some embodiments, as Figure 2 shown, the clamping plate 4 is slidably connected with the support frame 2. The clamping adjustment mechanism 5 has a screw 51. One side of the clamping plate 4 facing away from the winding roller 1 is rotatably provided with the screw 51. The screw 51 is threadedly connected with the support frame 2. A handwheel 52 is fixedly arranged at one end of the screw 51 facing away from the winding roller 1. By rotating the handwheel 52 to rotate the screw 51, the threaded structure between the screw 51 and the support frame 2 drives the screw 52 to move axially relative to the support frame 2. When the screw 51 moves, it drives the clamping plate 4 at its end to move synchronously, so that the clamping plate 4 approaches or moves away from the winding roller 1, realizing clamping or releasing of the geosynthetic material outside the winding roller 1.

[0022] In some embodiments, two guide rods 53 are symmetrically arranged on one side of the clamping plate 4 facing away from the winding roller 1. The guide rods 53 are slidably connected with the support frame 2. The clamping plate 4 is cooperated with the support frame 2 through the guide rods 53 to realize the sliding connection mode between the clamping plate 4 and the support frame 2.

[0023] In some embodiments, such as Figure 3 As shown, on one side of the end of the clamping plate 4 close to the winding roller 1, a locking bolt 41 is provided. A locking groove 13 matching the locking bolt 41 is formed on the outer side of the winding roller 1. When the clamping plate 4 clamps towards the winding roller 1, the locking bolt 41 is inserted into the interior of the locking groove 13. The locking bolt 41 and the locking groove 13 cooperate to lock the winding roller 1 and restrict the rotation of the winding roller 1, further preventing the geosynthetic material from slipping during the experiment.

[0024] In some embodiments, a chamfer 411 is provided at one end of the locking bolt 41 corresponding to the locking groove 13. The provision of the chamfer 411 enables the locking bolt 41 to have a smaller end portion, facilitating the insertion of the locking bolt 41 into the interior of the locking groove 13.

[0025] In some embodiments, the support frame 2 has a rear support plate 23 and a front support plate 22 that are parallel to each other. Side plates 21 are fixedly provided between the two ends of the rear support plate 23 and the front support plate 22. A top plate 24 is fixedly provided at the top of the rear support plate 23. The connection end 3 is provided at the top of the top plate 24. The side plates 21, the rear support plate 23, the front support plate 22, and the top plate 24 are fixedly connected together by welding or bolt assembly.

[0026] In some embodiments, the clamping plate 4 is a circular arc plate body structure that matches the outer side of the winding roller 1. The circular arc plate body structure of the clamping plate 4 fits well with the outer side of the winding roller 1, ensuring a large contact area and thus a large frictional force.

[0027] In some embodiments, a tensile test device is disclosed, which includes the geosynthetic material tensile fixture in any one of the above embodiments.

[0028] So far, the embodiments of the present invention have been described in detail. To avoid obscuring the concept of the present invention, some details well known in the art have not been described. Those skilled in the art can clearly understand how to implement the technical solutions disclosed herein based on the above description.

[0029] The above-described embodiments only represent some embodiments of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A geosynthetics tensile fixture, characterized in that: It includes a support frame, a connecting end is fixedly provided on the top of the support frame, a winding roller is rotatably provided inside the support frame, a handle is provided at one end of the winding roller, a socket is opened on the winding roller along its radial direction, corresponding clamping plates are symmetrically provided on both sides of the winding roller, and a clamping adjustment mechanism for driving the clamping plates to approach or move away from the winding roller is provided on the support frame.

2. The geosynthetics tensile fixture according to claim 1, characterized in that: The clamping plate is slidably connected to the support frame, the clamping adjustment mechanism has a screw, a screw is rotatably arranged on the side of the clamping plate away from the winding roller, the screw is threadedly connected to the support frame, and a hand wheel is fixedly arranged on the end of the screw away from the winding roller.

3. The geosynthetics tensile fixture according to claim 2, characterized in that: Two guide rods are symmetrically arranged on one side of the clamping plate away from the winding roller, and the guide rods are slidably connected to the support frame.

4. The geosynthetics tensile fixture according to claim 1, characterized in that: A locking bolt is arranged on one side of the end of the clamping plate close to the winding roller, and a locking groove matching the locking bolt is opened on the outer side of the winding roller.

5. The geosynthetics tensile fixture according to claim 4, characterized in that: One end of the locking bolt corresponding to the locking groove is provided with a chamfer.

6. The geosynthetics tensile fixture according to claim 1, characterized in that: The support frame comprises a rear support plate and a front support plate which are parallel to each other, a side plate is fixedly arranged between the two ends of the rear support plate and the front support plate, a top plate is fixedly arranged on the top of the rear support plate, and the connecting end is arranged on the top of the top plate.

7. The geosynthetics tensioning fixture according to claim 1, characterized in that: The clamping plate is an arc-shaped plate structure matching the outer side of the winding roller.

8. A tensile testing device, characterized in that: It comprises the geosynthetics tensile clamp as claimed in any one of claims 1 to 7.

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