Clamping structure of tension tester
By designing the wire head clamp structure with the movable clamping plate and the spring connected in the tensile test machine, the problem of unstable cable clamping is solved, ensuring stable clamping of the cable in the tensile test, and improving the accuracy of the test results.
Patent Information
- Application Number
- CN202422141258.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-02
AI Technical Summary
The clamps of existing tensile testing machines are prone to fall off due to deformation when clamping cable materials, which affects the accuracy of the test results.
A clamping structure including an upper clamp and a lower clamp is designed. The cable is clamped stably by using a movable clamping plate, a wire tube positioning sleeve and a spring-connected wire head clamping block to clamp the cable under the action of the spring to prevent falling off.
The cable is stably clamped during tensile test to prevent falling off and ensure the accuracy of the test results.
Smart Images
Figure CN223122683U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of tensile testing machines, and particularly to a clamping structure of a tensile testing machine. Background Technique
[0002] The tensile testing machine is also known as a universal material testing machine. The universal testing machine is a mechanical force-applying testing machine used for static load, tension, compression, bending, shearing, tearing, peeling and other mechanical property tests of various materials. It is applicable to the physical and mechanical property tests of various materials such as plastic sheets, pipes, profiles, plastic films, rubber, wire and cable, steel, and glass fiber. It is an indispensable testing equipment for material development, physical property tests, teaching research, quality control, etc. As an important part of the instrument, different fixtures are required for different materials, which is also an important factor affecting whether the test can be carried out smoothly and the accuracy of the test results.
[0003] However, when the fixture of the current tensile testing machine clamps the cable material, since the material will be extruded and deformed under greater pressure, it is easy to cause the clamping position to fall off after the tensile force is applied. Content of the Utility Model
[0004] Aiming at the deficiencies of the prior art, the utility model provides a clamping structure of a tensile testing machine, which solves the problems mentioned in the above background.
[0005] The utility model provides the following technical solutions: a clamping structure of a tensile testing machine, including a testing machine, the testing machine includes: an upper fixture and a lower fixture, the upper fixture includes: a clamping seat, a placement groove, and a clamping screw rod. An active clamping plate is arranged at the end of the clamping screw rod on the inner side wall of the placement groove. A positioning card slot is opened at the upper end of the active clamping plate, a wire tube positioning sleeve is arranged inside the positioning card slot, an embedded groove is arranged on the outer side wall of the wire tube positioning sleeve, a wire end clamping block is arranged inside the embedded groove, and a spring is connected between the wire end clamping block and the wire tube positioning sleeve.
[0006] As a further scheme of the utility model: a frame is installed at the lower end of the testing machine, a slider is installed at the lower end of the lower fixture, and a guide rod is installed on the upper surface of the frame inside the slider.
[0007] As a further scheme of the utility model: a control panel is installed on the outer side of the guide rod, and a bolt is connected between the lower surface of the slider and the frame.
[0008] As a further scheme of the utility model: the wire tube positioning sleeve is a conical member, and the wire tube positioning sleeve is clamped with the positioning card slot.
[0009] As a further solution of the utility model: the wire head clamping block is fixedly connected with the wire pipe positioning sleeve through the spring.
[0010] As a further solution of the utility model: a tensile sensor is installed at the upper end of the clamp seat, and the lower clamp is slidably connected with the guide rod through the slider.
[0011] As a further solution of the utility model: a rack is arranged on the side surface of the movable clamping plate, and the clamping screw rod is meshed and rotatably connected with the clamp seat.
[0012] As a further solution of the utility model: the slider is slidably connected with the guide rod.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] 1. After the internal cables are separated to both sides as a whole, the two wire head clamping blocks outside the wire pipe positioning sleeve are pulled out from the inside of the embedded groove as a whole. After the separated cables are inserted into the gap between the wire head clamping blocks and the wire pipe positioning sleeve as a whole, when the wire pipe positioning sleeve contacts the two movable clamping plates, the movable clamping plates will extrude the wire pipe positioning sleeve, and then under the action of pressure, the clamping of the cables can be ensured to be stable and the cables can be prevented from falling off. Description of the drawings
[0015] Figure 1 It is a schematic structural diagram of a clamping structure of a tensile testing machine;
[0016] Figure 2 It is a schematic structural diagram of the upper clamp of a clamping structure of a tensile testing machine;
[0017] Figure 3 It is a schematic structural diagram of the wire pipe positioning sleeve of a clamping structure of a tensile testing machine;
[0018] Figure 4 It is a front view structural diagram of the testing machine of a clamping structure of a tensile testing machine;
[0019] Figure 5 It is a schematic bottom view structural diagram of the upper clamp of a clamping structure of a tensile testing machine.
[0020] In the figure: 1. Testing machine; 2. Guide rod; 3. Upper clamp; 4. Lower clamp; 5. Slider; 6. Frame; 7. Bolt; 8. Control panel; 301. Clamp seat; 302. Placing groove; 303. Movable clamping plate; 304. Positioning card slot; 305. Clamping screw rod; 306. Wire pipe positioning sleeve; 307. Tensile sensor; 308. Embedded groove; 309. Wire head clamping block; 310. Spring. Detailed implementation manners
[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0022] As Figures 1-5 shown, this embodiment provides a clamping structure for a tensile testing machine, including a testing machine 1, and the testing machine 1 includes: an upper fixture 3 and a lower fixture 4. The upper fixture 3 includes: a clamping seat 301, a placement groove 302, and a clamping screw rod 305. The clamping screw rod 305 is meshed and rotationally connected to the clamping seat 301. At the end of the clamping screw rod 305 located on the inner side wall of the placement groove 302, there is a movable clamping plate 303. The side surface of the movable clamping plate 303 is provided with a rack. The upper end of the movable clamping plate 303 is provided with a positioning card slot 304. Inside the positioning card slot 304, there is a wire tube positioning sleeve 306. The wire tube positioning sleeve 306 is a conical member, and the wire tube positioning sleeve 306 is clamped with the positioning card slot 304. The outer side wall of the wire tube positioning sleeve 306 is provided with an embedded groove 308. Inside the embedded groove 308, there is a wire end clamping block 309. A spring 310 is connected between the wire end clamping block 309 and the wire tube positioning sleeve 306. The wire end clamping block 309 is fixedly connected to the wire tube positioning sleeve 306 through the spring 310.
[0023] As Figures 2-3 shown, in this embodiment, a frame 6 is installed at the lower end of the testing machine 1, a slider 5 is installed at the lower end of the lower fixture 4, a tensile force sensor 307 is installed at the upper end of the clamping seat 301. The lower fixture 4 is slidably connected to the guide rod 2 through the slider 5. Inside the slider 5, the guide rod 2 is installed on the upper surface of the frame 6, and the slider 5 is slidably connected to the guide rod 2. A control panel 8 is installed on the outer side of the guide rod 2. A bolt 7 is connected between the lower surface of the slider 5 and the frame 6.
[0024] The working principle of the present utility model is as follows: When clamping a hard object, after placing the two ends of the equipment inside the lower fixture 4 and the upper fixture 3 respectively, by applying torque to the clamping screw rod 305, the overall movement of the movable clamping plate 303 towards the outside of the equipment is controlled to contact, ensuring the clamping effect on the experimental equipment. Then, by controlling the slider 5 to move downward on the outside of the guide rod 2, the tensile test of the equipment is realized. When conducting a tensile test on a flexible cable, after inserting the two ends of the cable into the two ends of the two cable pipe positioning sleeves 306 respectively, the cortex on the outside of the two ends of the cable is cut open as a whole, the internal cable is separated to both sides as a whole, the two wire head clamping blocks 309 on the outside of the cable pipe positioning sleeve 306 are pulled out from the inside of the embedded groove 308 as a whole, the spring 310 is adjusted to a tensile state as a whole, and after the separated cable is inserted into the gap between the wire head clamping block 309 and the cable pipe positioning sleeve 306, under the action of the spring 310, the wire head clamping block 309 is pressed against the outside of the cable. After the cable with the cable pipe positioning sleeve 306 installed is respectively corresponding to the positioning slots 304 on the movable clamping plates 303 inside the upper fixture 3 and the lower fixture 4, when the two movable clamping plates 303 contact, the movable clamping plates 303 squeeze the cable pipe positioning sleeve 306, and under the pressure, the clamping stability of the cable can be ensured, and the cable can be prevented from falling off when tension is applied.
[0025] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to this process, method, article or device.
[0026] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A clamping structure of a tensile testing machine, comprising a testing machine (1), characterized in that, The test machine (1) includes: an upper fixture (3) and a lower fixture (4). The upper fixture (3) includes: a clamp seat (301), a placement groove (302), and a clamping screw rod (305). At the end of the clamping screw rod (305) located on the inner side wall of the placement groove (302), there is a movable clamping plate (303). At the upper end of the movable clamping plate (303), there is a positioning card slot (304). Inside the positioning card slot (304), there is a wire tube positioning sleeve (306). On the outer side wall of the wire tube positioning sleeve (306), there is an embedded groove (308). Inside the embedded groove (308), there is a wire head clamping block (309). Between the wire head clamping block (309) and the wire tube positioning sleeve (306), there is a spring (310).
2. The clamping structure of a tensile testing machine according to claim 1, characterized in that, At the lower end of the test machine (1), a frame (6) is installed. At the lower end of the lower fixture (4), a slider (5) is installed. Inside the slider (5) and on the upper surface of the frame (6), a guide rod (2) is installed.
3. A clamping structure of a tensile testing machine according to claim 2, characterized in that, A control panel (8) is installed on the outer side of the guide rod (2). Between the lower surface of the slider (5) and the frame (6), a bolt (7) is connected.
4. A clamping structure of a tensile testing machine according to claim 1, characterized in that, The wire tube positioning sleeve (306) is a conical component, and the wire tube positioning sleeve (306) is snap-fitted with the positioning card slot (304).
5. A clamping structure of a tensile testing machine according to claim 1, characterized in that, The wire head clamping block (309) is fixedly connected to the wire tube positioning sleeve (306) through the spring (310).
6. A clamping structure of a tensile testing machine according to claim 2, characterized in that, At the upper end of the clamp seat (301), a tensile sensor (307) is installed. The lower fixture (4) is slidably connected to the guide rod (2) through the slider (5).
7. A clamping structure of a tensile testing machine according to claim 1, characterized in that, On the side surface of the movable clamping plate (303), there are gear teeth. The clamping screw rod (305) is meshed and rotationally connected to the clamp seat (301).
8. A clamping structure of a tensile testing machine according to claim 3, characterized in that, The slider (5) is slidably connected to the guide rod (2).