A kind of clamp for steel plastic geogrid tensile property detection

Abstract

The utility model provides a kind of clamp for steel plastic geogrid tensile property detection, including clamp main body, winder and clamping mechanism, the clamp main body has two, two clamp main bodies are symmetrically arranged, clamp main body includes two parallelly arranged two support plates and the connecting plate connected between two support plates, connecting plate is received in the rear end of two support plates, a hollow installation area is formed between two support plates, the winder is installed in installation area, the clamping mechanism is installed in the front end of clamp main body. The utility model is by being arranged clamping mechanism, can quickly install steel plastic geogrid sample to clamp, and firm and reliable, operability is strong, reduce the probability that the result deviation occurs due to clamping not tight, the device is simple and quick, firm and reliable, clamping performance is strong, not easy to slip wire and loosen, can improve work efficiency, improve the reliability of detection result.

Description

Technical Field

[0001] This utility model relates to the technical field of tensile testing machine equipment, specifically to a fixture for testing the tensile properties of steel-plastic geogrids. Background Technology

[0002] Steel-plastic geogrids are mesh structures formed by combining steel bars and plastic, and are a common building engineering material. High-strength steel wires serve as the core load-bearing material, with an outer layer of polyethylene (PE) or polypropylene (PP) plastic. They are manufactured through an extrusion composite process. The steel wires provide the main tensile strength, while the plastic layer acts as a corrosion and rust protector, protects the steel wires, and enhances friction with the soil. Compared to ordinary geogrids, they have significantly higher load-bearing capacity. Typically, before applying steel-plastic geogrids, it is necessary to cut and sample the sample, then clamp it using a frustum-shaped or jaw clamp to conduct necessary strength tests, thereby verifying the product quality of the steel-plastic geogrid.

[0003] Currently, testing units use tensile tests to test the tensile properties of steel-plastic geogrids. As the main testing equipment, the performance of the tensile testing machine is particularly important. However, the clamping performance of the clamps that come with the tensile testing machines on the market is poor. The clamps for geogrid tensile testing lack fastening facilities, or the fastening facilities are difficult to fit tightly with the sample. This leads to phenomena such as slippage or loosening when the tensile force reaches a certain value during the tensile test, which reduces work efficiency, makes the test results large errors or even inaccurate, and is inconvenient to operate. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a fixture for testing the tensile properties of steel-plastic geogrids. This fixture can quickly and effectively install steel-plastic geogrid samples, reducing the probability of result deviations due to loose clamping.

[0005] The technical solution adopted in this utility model is as follows: A clamp for testing the tensile properties of steel-plastic geogrid includes a clamp body, a winding device, and a clamping mechanism. There are two clamp bodies arranged symmetrically. Each clamp body includes two parallel support plates and a connecting plate connecting the two support plates. The connecting plate is supported at the rear end of the two support plates, and a hollow installation area is formed between the two support plates. The winding device is installed in the installation area, and the clamping mechanism is installed at the front end of the clamp body.

[0006] Furthermore, the connecting plate is provided with a connector for connecting to a tensile testing machine.

[0007] Furthermore, the winding device is installed between two support plates and located at the center of the installation area, with the winding device parallel to the connecting plate.

[0008] Furthermore, the surface of the winding device is provided with several small protrusions.

[0009] Furthermore, the clamping mechanism includes a fixed block, a clamping block, and a bolt for driving the clamping block to move. The fixed block is installed at the front end of the two support plates, and a threaded hole is opened at each of the left and right ends of the fixed block. A threaded hole is also opened at each of the left and right ends of the clamping block. The bolt passes through the threaded holes of the clamping block and the fixed block respectively to movably install the clamping block at the front end of the fixed block.

[0010] Furthermore, the fixing block is a square structure made of stainless steel, with multiple alternating upper protrusions and upper grooves on its front surface. The upper protrusions and upper grooves are all arc-shaped or semi-circular. The clamping block is a semi-circular structure made of stainless steel, with its side opposite the fixing block being the clamping surface. The clamping surface is provided with multiple alternating lower protrusions and lower grooves, which are all arc-shaped or semi-circular. The upper protrusions and upper grooves on the fixing block match the lower protrusions and lower grooves on the clamping block, with the upper protrusions engaging in the lower grooves and the lower protrusions engaging in the upper grooves.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This invention, through the setting of a clamping mechanism, can quickly install steel-plastic geogrid samples onto the clamp, which is firm, reliable, and easy to operate. It reduces the probability of result deviation due to loose clamping. The device is simple, fast, firm, reliable, and has strong clamping performance. It is not easy to slip or loosen, which can improve work efficiency and enhance the reliability of test results. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of the structure of this utility model; Appendix Figure 2 It is attached Figure 1 The diagram shows the structure of the clamping mechanism. Detailed Implementation

[0013] 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. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0014] like Figure 1As shown, a fixture for testing the tensile properties of steel-plastic geogrid includes a fixture body 1, a winding device 2, and a clamping mechanism 3. There are two fixture bodies 1, symmetrically arranged. Each fixture body 1 is made of stainless steel, possessing sufficient strength and toughness. Each fixture body 1 includes two parallel support plates 11 and a connecting plate 12 connecting the two support plates 11. The connecting plate 12 rests on the rear ends of the two support plates 11, forming a hollow installation area between them. A connector 13 is provided on the connecting plate 12 for connection to a tensile testing machine. The winding device 2 is installed within the installation area, specifically between the two support plates 11 and at the center of the installation area. The winding device 2 is parallel to the connecting plate 12 and is used to wind the test sample 4. The test sample 4 is wound between the two winding devices 2. The surface of the winding device 2 has several small protrusions, which allow the steel-plastic geogrid test sample 4 to adhere more tightly and prevent slippage.

[0015] like Figure 2 As shown, the clamping mechanism 3 is installed at the front end of the clamp body 1. The clamp body 1 is used to clamp the steel-plastic geogrid test sample 4. The clamping mechanism 3 includes a fixing block 31, a clamping block 32, and a bolt 33 for driving the clamping block 32 to move. The fixing block 31 is installed at the front end of the two support plates 11. The fixing block 31 is a square structure made of stainless steel. Its front surface is provided with multiple alternating upper protrusions 311 and upper grooves 312. The upper protrusions 311 and upper grooves 312 are all arc-shaped or semi-circular. The fixing block 31 has a threaded hole at each of its left and right ends. The clamping block 32 also has a threaded hole at each of its left and right ends. The bolt 33 passes through the threaded holes of the clamping block 32 and the fixing block 31 respectively to clamp the clamping block 32. The clamping block 32 is a semi-circular structure made of stainless steel, which is mounted on the front end of the fixed block 31. The side of the clamping block 32 opposite to the fixed block 31 is the clamping surface. The clamping surface is provided with multiple alternating lower protrusions 321 and lower grooves 322. The lower protrusions 321 and lower grooves 322 are arc-shaped or semi-circular. The upper protrusions 311 and upper grooves 312 on the fixed block 31 match the lower protrusions 321 and lower grooves 322 on the clamping block 32. The test sample 4 passes through the gap between the clamping block 32 and the fixed block 31. When the clamping block 32 is closed, the bolt 33 is tightened so that the upper protrusion 311 is inserted into the lower groove 322 and the lower protrusion 321 is inserted into the upper groove 312, thereby firmly fixing the test sample 4 in the clamping mechanism 3.

[0016] The principle of this utility model is as follows: The fixture body 1 is fixed to the tensile testing machine via connector 13. The cut and adjusted steel-plastic geogrid test sample 4 is first wound around the winding device 2 several times. The test sample 4 is then passed through the gap between the clamping block 32 and the fixing block 31. The bolt 33 is tightened so that the protrusion 311 is embedded in the groove 321, thereby firmly fixing the test sample 4. The test sample 4 can then be securely fixed on the winding device 2, which facilitates the tensile test.

[0017] This invention, through the setting of a clamping mechanism, can quickly install steel-plastic geogrid samples onto the clamp, which is firm, reliable, and easy to operate. It reduces the probability of result deviation due to loose clamping. The device is simple and quick, has strong clamping performance, is not easy to slip or loosen, and is firm and reliable, which can improve work efficiency and enhance the reliability of test results.

[0018] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A clamp for testing the tensile properties of steel-plastic geogrids, comprising a clamp body, a winding device, and a clamping mechanism, characterized in that: The fixture body has two symmetrically arranged bodies. Each fixture body includes two parallel support plates and a connecting plate between the two support plates. The connecting plate is supported at the rear end of the two support plates, and a hollow installation area is formed between the two support plates. The winding device is installed in the installation area, and the clamping mechanism is installed at the front end of the fixture body.

2. The fixture for testing the tensile properties of steel-plastic geogrid according to claim 1, characterized in that: The connecting plate is provided with a connector for connecting to a tensile testing machine.

3. The fixture for testing the tensile properties of steel-plastic geogrid according to claim 1, characterized in that: The winding device is installed between two support plates and is located at the center of the installation area, with the winding device parallel to the connecting plate.

4. The fixture for testing the tensile properties of steel-plastic geogrid according to claim 1, characterized in that: The surface of the winding device is provided with several small raised points.

5. The fixture for testing the tensile properties of steel-plastic geogrid according to claim 1, characterized in that: The clamping mechanism includes a fixed block, a clamping block, and a bolt for driving the clamping block to move. The fixed block is installed at the front end of two support plates, and a threaded hole is opened at each of the left and right ends of the fixed block. A threaded hole is also opened at each of the left and right ends of the clamping block. The bolt passes through the threaded holes of the clamping block and the fixed block respectively to movably install the clamping block at the front end of the fixed block.

6. The fixture for testing the tensile properties of steel-plastic geogrid according to claim 5, characterized in that: The fixing block is a square structure made of stainless steel. Its front surface is provided with multiple alternating upper protrusions and upper grooves. The upper protrusions and upper grooves are all arc-shaped or semi-circular. The clamping block is a semi-circular structure made of stainless steel. Its side opposite to the fixing block is the clamping surface. The clamping surface is provided with multiple alternating lower protrusions and lower grooves. The lower protrusions and lower grooves are all arc-shaped or semi-circular. The upper protrusions and upper grooves on the fixing block match the lower protrusions and lower grooves on the clamping block. The upper protrusions are engaged in the lower grooves, and the lower protrusions are engaged in the upper grooves.

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