High-strength metal wire stretching clamp

Abstract

The utility model relates to the field of metal experiments, in particular to a high-strength metal wire stretching clamp which comprises a concentric-square-shaped steel frame, a tensioning assembly is arranged in the concentric-square-shaped steel frame and comprises first fixing blocks, and the two first fixing blocks are both fixedly connected to the inner walls of the opposite sides of the concentric-square-shaped steel frame. The interior of the first fixing block is fixedly connected with a first fixing shaft, and the side surface of the first fixing shaft is sleeved with a supporting rod. According to the high-strength metal wire stretching clamp, the tensioning assembly is additionally arranged, the left clamping block and the C-shaped clamping block are connected to the two sides of the inner wall of the concentric-square-shaped steel frame in a hinged mode, the C-shaped clamping block is movably connected with the H-shaped clamping block at the top through the sliding block and the sliding groove, and a metal wire is bent by 90 degrees to penetrate through a hole in the middle of the H-shaped clamping block; when the metal wire is stretched, the three clamping blocks can be driven to move downwards, the lengths of the supporting rods on the two sides are constant, the supporting force is larger when the metal wire rotates downwards, the friction force is larger along with larger pulling force, the metal wire cannot slide off, and the experiment success rate can be increased.

Description

Technical Field

[0001] The utility model relates to the field of metal experiments, in particular to a tensile fixture for high-strength metal wires. Background Art

[0002] For some metal wires, during production and use, we need to understand their tensile mechanical properties, which can be measured through a tensile testing machine. However, the jaws of some tensile testing machines are not convenient for directly clamping metal wires, and a special metal wire tensile fixture needs to be used in conjunction with the tensile testing machine for testing. The requirements for the metal wire tensile fixture are that it can clamp the specimen during the tensile test without slipping, and the clamping force is controlled within a reasonable range to avoid clamping damage to the test specimen and affecting the test data.

[0003] Currently, when using a high-strength metal wire tensile fixture, when testing the extensibility and strength of metal wires, the experimental machine will pull the metal wire through the fixture. When testing metal wires with general strength, they will be broken within the friction force threshold between the metal wire and the fixture to obtain experimental data. However, when testing high-strength metal wires, the tensile force will be greater than the friction force, resulting in the detachment of the metal wire, and the greater the downward pulling force of the experimental machine, the easier it is to detach, thereby reducing the experimental success rate. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide a high-strength metal wire stretching fixture to solve the problem proposed in the above-mentioned background technology that when it is necessary to test the extensibility and strength of the metal wire, the experimental machine will pull the metal wire through the fixture. When testing metal wires with general strength, they will be broken within the friction threshold between the metal wire and the fixture to obtain experimental data. However, when testing high-strength metal wires, the tensile force will be greater than the friction force, resulting in the detachment of the metal wire, and the greater the downward pulling force of the experimental machine, the easier it is to detach, thereby reducing the success rate of the experiment. To achieve the above purpose, the present utility model provides the following technical solution: A high-strength metal wire stretching fixture includes a rectangular steel frame. A tensioning component is arranged inside the rectangular steel frame. The tensioning component includes a first fixing block. The two first fixing blocks are fixedly connected to the opposite inner side walls of the rectangular steel frame. A first fixing shaft is fixedly connected inside the first fixing block. A support rod is sleeved on the side surface of the first fixing shaft. The other end of the support rod is sleeved with a second fixing shaft. The two ends of the second fixing shaft are fixedly connected with a second fixing block. The other side of the second fixing block is fixedly connected with a C-shaped clamping block. Sliders are fixedly connected to the opposite sides of the C-shaped clamping block. A groove is opened on one side of the C-shaped clamping block. An H-shaped clamping block is movably connected to the top of the C-shaped clamping block. Sliding grooves are opened on the opposite inner side walls of the H-shaped clamping block. A hole is opened inside the H-shaped clamping block. A left clamping block is hinged inside the rectangular steel frame. For this high-strength metal wire stretching fixture, by adding a tensioning component, the left clamping block and the C-shaped clamping block are connected by hinges on both sides of the inner wall of the rectangular steel frame. The C-shaped clamping block is movably connected to the top H-shaped clamping block through the slider and the sliding groove. The metal wire is bent at a right angle and passed through the hole in the middle of the H-shaped clamping block. When the metal wire is stretched, it will drive the three clamping blocks to move downward. The lengths of the support rods on both sides are constant, and the greater the downward rotation, the greater the supporting force. The greater the pulling force, the greater the friction force, and the metal wire will not slip, which is beneficial to improving the success rate of the experiment.

[0005] Further preferably, a fastening component is arranged inside the rectangular steel frame. The fastening component includes a first threaded rod. The first threaded rod is fixedly connected to the top inner wall of the rectangular steel frame. For this high-strength metal wire stretching fixture, by adding a fastening component, when the metal wire is bent at a right angle, it moves downward in a threaded manner through the lifting tube, driving the upper clamping block to clamp the metal wire, giving the metal wire a preliminary clamping force, further preventing the metal wire from falling off during the experiment, and adding an anti-slip rod to increase the friction force, reducing the possibility of bumps caused by slipping when the operator rotates, which is beneficial to reducing the likelihood of danger.

[0006] Further preferably, the bottom end of the first threaded rod is threadedly connected with a lifting tube. A first threaded hole is formed inside the lifting tube. Two fixed tubes are fixedly connected to the side surface of the lifting tube. A second threaded hole is formed inside the fixed tube. For this high-strength metal wire stretching clamp, by adding a fastening component, when the metal wire is bent by 90 degrees, the lifting tube moves downward in a threaded manner, driving the upper clamping block to clamp the metal wire, giving the metal wire a preliminary clamping force, further preventing the metal wire from falling off during the experiment, and adding anti-slip rods to increase the friction force, reducing the possibility of bumps caused by slipping when the operator rotates, which is beneficial to reducing the occurrence of danger.

[0007] Further preferably, the other end of the fixed tube is threadedly connected with a second threaded rod. The other end of the second threaded rod is fixedly connected with a rotating rod. The other end of the rotating rod is fixedly connected with an anti-slip rod. The top of the H-shaped clamping block is movably connected with an upper clamping block. For this high-strength metal wire stretching clamp, by adding a fastening component, when the metal wire is bent by 90 degrees, the lifting tube moves downward in a threaded manner, driving the upper clamping block to clamp the metal wire, further preventing the metal wire from falling off during the experiment, and adding anti-slip rods to increase the friction force, reducing the possibility of bumps caused by slipping when the operator rotates, which is beneficial to reducing the occurrence of danger.

[0008] Further preferably, a clamping handle is fixedly connected to the top of the U-shaped steel frame. For this high-strength metal wire stretching clamp, by adding a clamping handle, it is beneficial for the experimental machine to install the clamp more stably, improving the stability of the clamp.

[0009] Further preferably, a sample-passing hole is fixedly communicated with the bottom of the U-shaped steel frame. For this high-strength metal wire stretching clamp, by adding a sample-passing hole, it is convenient for the metal wire to pass through the hole for clamping, which is beneficial to improving the convenience of using the clamp.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] In the present utility model, for this high-strength metal wire stretching clamp, by adding a tensioning component, the left clamping block and the C-shaped clamping block are connected by hinges on both sides of the inner wall of the U-shaped steel frame. The C-shaped clamping block is movably connected with the H-shaped clamping block at the top through a slider and a chute. The metal wire is bent by 90 degrees and passes through the hole in the middle of the H-shaped clamping block. When the metal wire is stretched, it will drive the three clamping blocks to move downward. The lengths of the support rods on both sides are constant. The lower the rotation, the greater the supporting force, and the greater the friction force with the increase of the tensile force, preventing the metal wire from slipping, which is beneficial to improving the success rate of the experiment.

[0012] In the present utility model, for this high-strength metal wire stretching fixture, by adding a fastening component, when the metal wire is bent at a 90-degree angle, the lifting tube moves downward through the thread, driving the upper clamping block to clamp the metal wire, giving the metal wire a preliminary clamping force, further preventing the metal wire from falling off during the experiment, and adding anti-slip rods to increase the friction force, reducing the risk of the operator being bruised due to slipping during rotation, which is beneficial to reducing the possibility of danger occurrence.

[0013] In the present utility model, for this high-strength metal wire stretching fixture, by adding a clamping handle, it is beneficial for the experimental machine to install the fixture more stably, improving the stability of the fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic three-dimensional structure diagram of the whole of the present utility model Figure 1 ;

[0015] Figure 2 is a schematic three-dimensional structure diagram of the whole of the present utility model Figure 2 ;

[0016] Figure 3 is a schematic partial three-dimensional structure diagram of the present utility model Figure 1 ;

[0017] Figure 4 is a schematic partial three-dimensional structure diagram of the present utility model Figure 2 ;

[0018] Figure 5 is a schematic partial three-dimensional structure diagram of the present utility model Figure 3 .

[0019] In the figure: 1, U-shaped steel frame; 2, tensioning component; 3, fastening component; 4, clamping handle; 5, sample-passing hole; 201, first fixing block; 202, first fixing shaft; 203, support rod; 204, second fixing shaft; 205, second fixing block; 206, C-shaped clamping block; 207, slider; 208, groove; 209, H-shaped clamping block; 210, sliding groove; 211, hole; 212, left clamping block; 301, first threaded rod; 302, lifting tube; 303, first threaded hole; 304, fixed tube; 305, second threaded hole; 306, second threaded rod; 307, rotating rod; 308, anti-slip rod; 309, upper clamping block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figure 1 - Figure 5 , a high-strength metal wire stretching fixture, including a U-shaped steel frame 1, a tensioning assembly 2 is arranged inside the U-shaped steel frame 1. The tensioning assembly 2 includes a first fixing block 201, and both of the two first fixing blocks 201 are fixedly connected to the opposite inner side walls of the U-shaped steel frame 1. A first fixing shaft 202 is fixedly connected inside the first fixing block 201. A support rod 203 is sleeved on the side surface of the first fixing shaft 202. The other end of the support rod 203 is sleeved with a second fixing shaft 204. Both ends of the second fixing shaft 204 are fixedly connected with a second fixing block 205. A C-shaped clamping block 206 is fixedly connected to the other side of the second fixing block 205. Sliders 207 are fixedly connected to the opposite sides of the C-shaped clamping block 206. A groove 208 is opened on one side of the C-shaped clamping block 206. An H-shaped clamping block 209 is movably connected to the top of the C-shaped clamping block 206. Sliding grooves 210 are opened on the opposite inner side walls of the H-shaped clamping block 209. A hole 211 is opened inside the H-shaped clamping block 209. A left clamping block 212 is hinged inside the U-shaped steel frame 1.

[0022] In this embodiment, as shown in Figure 1 、 Figure 2 and Figure 3 , a fastening assembly 3 is arranged inside the U-shaped steel frame 1. The fastening assembly 3 includes a first threaded rod 301, and the first threaded rod 301 is fixedly connected to the top inner wall of the U-shaped steel frame 1.

[0023] In this embodiment, as shown in Figure 1 、 Figure 2 and Figure 3 , the bottom end of the first threaded rod 301 is threadedly connected with a lifting tube 302. A first threaded hole 303 is opened inside the lifting tube 302. Two fixing tubes 304 are fixedly connected to the side surface of the lifting tube 302. A second threaded hole 305 is opened inside the fixing tube 304.

[0024] In this embodiment, as shown in Figure 1 、 Figure 2 and Figure 3 , the other end of the fixing tube 304 is threadedly connected with a second threaded rod 306. The other end of the second threaded rod 306 is fixedly connected with a rotating rod 307. The other end of the rotating rod 307 is fixedly connected with an anti-slip rod 308. The top of the H-shaped clamping block 209 is movably connected with an upper clamping block 309.

[0025] In this embodiment, as shown in Figure 1 and Figure 2 , a clamping handle 4 is fixedly connected to the top of the U-shaped steel frame 1.

[0026] In this embodiment, as shown in Figure 1 and Figure 2As shown, a sample-piercing hole 5 is fixedly connected to the bottom of the U-shaped steel frame 1.

[0027] The usage method and advantages of the present utility model: When using this high-strength metal wire stretching fixture, the working process is as follows:

[0028] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, it is fixed to the inner wall of the U-shaped steel frame 1 through the first fixing block 201, the support rod 203 is sleeved on the first fixing shaft 202 fixedly connected to the first fixing block 201, and the other end of the support rod 203 is sleeved on the second fixing shaft 204 fixedly connected to the second fixing block 205. The second fixing block 205 is fixedly connected to the C-shaped clamping block 206, so as to hinge the C-shaped clamping block 206 and the U-shaped steel frame 1. Similarly, the left clamping block 212 and the U-shaped steel frame 1 are hinged. Then, through the slider 207 fixedly connected to the C-shaped clamping block 206, it is movably connected to the H-shaped clamping block 209 provided with a chute 210. The metal wire bent at a right angle passes through the hole 211 opened in the middle of the H-shaped clamping block 209. By rotating the lifting pipe 302, the lifting pipe 302 presses down on the upper clamping block 309. The upper clamping block 309 and the H-shaped clamping block 209 clamp the metal wire, and the C-shaped clamping block 206 and the left clamping block 212 clamp the metal wire. When the metal wire is pulled downward, the H-shaped clamping block 209 presses downward. Due to the limitation of the chute 210 and the slider 207, the C-shaped clamping block 206 and the left clamping block 212 move downward. Also, because the length of the support rod 203 is constant, in the obliquely downward movement, the closer to the bottom, the greater the horizontal supporting force, and the greater the friction force of the C-shaped clamping block 206 and the left clamping block 212 on the metal wire. As the metal wire is pulled downward, the clamping force of the upper clamping block 309 and the H-shaped clamping block 209 on the metal wire gradually decreases, and it is mainly clamped by the friction force of the C-shaped clamping block 206 and the left clamping block 212. Thus, when using this fixture to stretch the metal wire, it will become tighter and tighter.

[0029] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-strength metal wire stretching fixture, comprising a U-shaped steel frame (1), characterized in that: Inside the U-shaped steel frame (1), there is a tensioning component (2). The tensioning component (2) includes a first fixed block (201). The two first fixed blocks (201) are both fixedly connected to the opposite inner side walls of the U-shaped steel frame (1). Inside the first fixed block (201), there is a first fixed shaft (202) fixedly connected. A support rod (203) is sleeved on the side surface of the first fixed shaft (202). The other end of the support rod (203) is sleeved with a second fixed shaft (204). Both ends of the second fixed shaft (204) are fixedly connected with second fixed blocks (205). On the other side of the second fixed block (205), there is a C-shaped clamping block (206) fixedly connected. On the opposite sides of the C-shaped clamping block (206), there are sliders (207) fixedly connected. On one side of the C-shaped clamping block (206), there is a groove (208) opened. On the top of the C-shaped clamping block (206), there is an H-shaped clamping block (209) movably connected. On the opposite inner side walls of the H-shaped clamping block (209), there are chutes (210) opened. Inside the H-shaped clamping block (209), there is a hole (211). Inside the U-shaped steel frame (1), there is a left clamping block (212) hinged.

2. The high-strength metal wire stretching fixture according to claim 1, characterized in that: Inside the U-shaped steel frame (1), there is a fastening component (3). The fastening component (3) includes a first threaded rod (301). The first threaded rod (301) is fixedly connected to the top inner wall of the U-shaped steel frame (1).

3. The high-strength metal wire stretching fixture according to claim 2, characterized in that: At the bottom end of the first threaded rod (301), there is a lifting pipe (302) connected by thread. Inside the lifting pipe (302), there is a first threaded hole (303) opened. On the side surface of the lifting pipe (302), there are two fixed pipes (304) fixedly connected. Inside the fixed pipe (304), there is a second threaded hole (305) opened.

4. The high-strength metal wire stretching fixture according to claim 3, wherein: At the other end of the fixed pipe (304), there is a second threaded rod (306) connected by thread. At the other end of the second threaded rod (306), there is a rotating rod (307) fixedly connected. At the other end of the rotating rod (307), there is an anti-slip rod (308) fixedly connected. On the top of the H-shaped clamping block (209), there is an upper clamping block (309) movably connected.

5. The high-strength metal wire stretching fixture according to claim 1, wherein: On the top of the U-shaped steel frame (1), there is a clamping handle (4) fixedly connected.

6. The high-strength metal wire stretching fixture according to claim 1, characterized in that: At the bottom of the U-shaped steel frame (1), there is a sample-passing hole (5) fixedly communicated.

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