Wire clamp for wire tensile test
By designing a wire clip for wire tensile test, using the structure of sleeve, support sleeve and rectangular block, ensuring that each wire is subjected to the same friction and squeeze pressure during the test, the test in the prior art is solved. The problem of inaccurate results improves the accuracy and efficiency of the test.
Patent Information
- Application Number
- CN202420231592.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-01-31
AI Technical Summary
In existing wire tensile testing equipment, wire clamps cannot ensure that each wire is subject to the same friction and squeeze pressure, resulting in low accuracy of the test results.
Design a wire clip for conductor tensile testing, including an open and closed sleeve, with a support sleeve and a rectangular block in the sleeve, which can fix the support sleeve and the sleeve through a limiting table and a limiting groove. The position is locked by sliding grooves and jamming grooves, ensuring that each wire is subjected to the same squeeze and friction when stretched.
Through this design, each wire is guaranteed to have the same friction and extrusion pressure in the tensile test, improve the accuracy of the test results, and effectively screen out unqualified wires.
Smart Images
Figure CN222505996U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of conductor tensile test equipment, in particular to a wire clamp for a conductor tensile test. Background Art
[0002] Before overhead wires are connected to the grid or after several years of use, they need to be tested for wire strength and wire gripping force according to relevant requirements. During the test, the wires are generally fixed by hooking, and tension clamps are usually crimped at both ends of the test wire to facilitate hooking and fixing the wire for tensile testing. However, tension clamps are disposable accessories and cannot be reused, which increases the test cost. In addition, the crimping of tension clamps can easily cause the wire to break at the crimping part during the tensile test, which brings uncertainty to the test results.
[0003] The existing wire clamp utilizes a wedge-shaped plug connector placed in a sleeve. As the wedge-shaped plug connector goes deeper, the inner diameter of the sleeve is gradually reduced. When the wire enters from one end of the sleeve, the wedge-shaped plug connector first contacts the wire and is driven to go deeper into the sleeve due to the friction between the wire and the wire. When the wire comes out from the other end without breaking, the tensile test is considered to be completed. However, the depth of the wedge-shaped plug connector cannot be accurately controlled during the insertion process of the wire. It is driven into the sleeve entirely by the friction of the wire. Therefore, the extrusion force and friction force of the wedge-shaped plug connector on each wire are different, and the accuracy of the test results still needs to be improved.
[0004] Therefore, it is necessary to propose a wire clamp for a wire tensile test to ensure that the friction force and the extrusion force on each wire are the same, thereby improving the accuracy of the test results. Utility Model Content
[0005] The utility model aims to solve the problem that the existing wire clamp cannot ensure that the friction force and the extrusion force on each wire are the same, resulting in low accuracy of the test result. A wire clamp for wire tensile test is provided.
[0006] The technical solution of the utility model is:
[0007] A wire clamp for a wire tensile test comprises a sleeve that can be opened and closed, a support sleeve coaxially arranged in the sleeve, a limit platform at the end of the support sleeve, a limit groove on the inner wall of the sleeve, and the support sleeve and the sleeve are relatively fixed when the limit platform is located in the limit groove;
[0008] A sliding groove is provided on the side wall of the support sleeve, and one end of the sliding groove is inclined to the axis of the support sleeve from the other end thereof. A rectangular block is provided in the sliding groove, and the rectangular block can slide in the sliding groove so that the bottom of the rectangular block is close to or away from the axis of the support sleeve. The top of the rectangular block is located on the outside of the support sleeve and is provided with a limiting protrusion. A clamping groove is provided on the inner wall of the sleeve. When the limiting protrusion is located in the clamping groove, the rectangular block and the sleeve are relatively fixed.
[0009] Furthermore, the sleeve is composed of two half sleeves, and the two half sleeves are rotatably connected.
[0010] Furthermore, there are three rectangular blocks, and the three rectangular blocks are evenly distributed around the axis of the support sleeve.
[0011] Furthermore, a tilting platform is provided at the bottom of the rectangular block, and the tilting platform tilts toward the axis of the support sleeve from one end of the rectangular block to the other end of the rectangular block, and the tilting direction of the tilting platform is consistent with the tilting direction of the sliding groove.
[0012] Furthermore, each sleeve is provided with a plurality of clamping grooves, which are arranged in a direction parallel to the axis of the sleeve.
[0013] Furthermore, scales are marked on the edge of the sliding groove, and the distance between the scales is the same as the distance between two adjacent clamping grooves on the sleeve.
[0014] Furthermore, the two half sleeves are hinged.
[0015] Furthermore, the sliding groove is rectangular.
[0016] The utility model discloses a wire clamp for a wire tensile test, wherein a support sleeve is arranged in a sleeve, and the support sleeve and the sleeve can be relatively fixed by a limit platform and a limit groove, a rectangular block is arranged in the sliding groove in the support sleeve, and a limit convex head is arranged on the top of the rectangular block, when the sleeve is closed, the rectangular block is located between the sleeve and the support sleeve, and the limit convex head is located in the clamping groove, and the rectangular block and the sleeve are relatively fixed, thereby realizing the locking of the position of the rectangular block, because the sliding groove is inclined, when the sleeve is opened, the position of the rectangular block in the sliding groove is pre-adjusted according to the test requirements of the wire, and then the sleeve is closed, at this time, when each wire passes through the middle part of the support sleeve, because the position of the rectangular block is locked and fixed, the extrusion force and friction force on each wire are the same, and unqualified wires will be screened out, and compared with the traditional technology, the technical scheme ensures that the friction force and extrusion force on each wire are the same, thereby improving the accuracy of the test result. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a three-dimensional diagram of the utility model;
[0018] Figure 2 This is a structural diagram of the sleeve of the utility model;
[0019] Figure 3 This is a structural diagram of the support sleeve of the utility model;
[0020] Figure 4 This is a rectangular block structure diagram of the utility model.
[0021] Figure numerals: 1, sleeve; 2, support sleeve; 3, limit platform; 4, limit groove; 5, sliding groove; 6, rectangular block; 7, limit boss; 8, snap-in groove; 9, half sleeve; 10, tilting platform. DETAILED DESCRIPTION
[0022] In order to make the technical means, technical features, utility model objectives and technical effects achieved by the utility model easy to understand, the utility model is further explained below with reference to specific illustrations.
[0023] Embodiment 1:
[0024] like Figure 1 and Figure 3 As shown, a wire clamp for a wire tensile test comprises a sleeve 1 that can be opened and closed, a support sleeve 2 coaxially arranged therein is provided in the sleeve 1, a limit platform 3 is provided at the end of the support sleeve 2, a limit groove 4 is provided on the inner wall of the sleeve 1, and when the limit platform 3 is located in the limit groove 4, the support sleeve 2 and the sleeve 1 are relatively fixed;
[0025] like Figure 2 and Figure 3 As shown, a sliding groove 5 is provided on the side wall of the support sleeve 2, and one end of the sliding groove 5 is inclined to the axis of the support sleeve 2 from the other end thereof. A rectangular block 6 is provided in the sliding groove 5, and the rectangular block 6 can slide in the sliding groove 5 so that the bottom of the rectangular block 6 is close to or away from the axis of the support sleeve 2, and the top of the rectangular block 6 is located on the outside of the support sleeve 2 and is provided with a limiting protrusion 7. A snap-fit groove 8 is provided on the inner wall of the sleeve 1. When the limiting protrusion 7 is located in the snap-fit groove 8, the rectangular block 6 is relatively fixed to the sleeve 1. Preferably, the structural shapes of the limiting groove 4 and the limiting platform 3 match each other.
[0026] Preferably, the sleeve 1 is composed of two half sleeves 9, and the two half sleeves 9 are hinged using a hinge.
[0027] Preferably, three rectangular blocks 6 are provided, and the three rectangular blocks 6 are evenly distributed around the axis of the support sleeve 2 .
[0028] like Figure 4As shown, preferably, a tilting platform 10 is provided at the bottom of the rectangular block 6, and the tilting platform 10 is tilted toward the axis of the support sleeve 2 from one end of the rectangular block 6 to the other end of the rectangular block 6, and the tilting direction of the tilting platform 10 is consistent with the tilting direction of the sliding groove 5. Preferably, the tilting platform 10 and the rectangular block 6 are integrally formed.
[0029] Preferably, there are multiple snap-in grooves 8 on each sleeve 1, and they are arranged in a direction parallel to the axis of the sleeve 1. Preferably, scales are marked on the edge of the sliding groove 5, and the distance between the scales is the same as the distance between two adjacent snap-in grooves 8 on the sleeve 1. Preferably, the two half sleeves 9 are hinged. Preferably, the sliding groove 5 is rectangular. Specifically, a handle is welded on the outside of the sleeve 1 for easy handholding.
[0030] Since there are multiple snap-fit grooves 8, when the sleeve 1 is opened, the rectangular block 6 can be moved to slide in the sliding groove 5 according to the scale marked on the edge of the sliding groove 5. After the position of the rectangular block 6 is adjusted, the sleeve 1 is closed. At this time, the three rectangular blocks 6 are simultaneously inserted into the snap-fit grooves 8 at the corresponding positions. At this time, the sleeve 1 is relatively fixed with the rectangular block 6. A support sleeve 2 is arranged in the sleeve 1. The support sleeve 2 and the sleeve 1 can be relatively fixed by the limiting platform 3 and the limiting groove 4. A rectangular block 6 is arranged in the sliding groove 5 in the support sleeve 2. A limiting protrusion 7 is arranged on the top of the rectangular block 6. When the sleeve 1 is closed, the rectangular block 6 is located between the sleeve 1 and the support sleeve 2, and the limiting protrusion 7 is arranged on the top of the rectangular block 6. The positioning convex head 7 is located in the clamping groove 8, and the rectangular block 6 is relatively fixed to the sleeve 1, so as to realize the locking of the position of the rectangular block 6. Since the sliding groove 5 is inclined, when the sleeve 1 is opened, the position of the rectangular block 6 in the sliding groove 5 is pre-adjusted according to the test requirements of the wire, and then the sleeve 1 is closed. At this time, when each wire passes through the middle of the support sleeve 2, since the position of the rectangular block 6 is locked and fixed, the extrusion force and friction force on each wire are the same, and unqualified wires will be screened out. Compared with the traditional technology, the technical solution ensures that the friction force and extrusion force on each wire are the same, thereby improving the accuracy of the test results.
[0031] The above description is only a preferred embodiment of the utility model, and is not intended to limit the scope of implementation of the utility model. That is, all equivalent changes and modifications made according to the content of the patent application scope of the utility model should belong to the technical scope of the utility model.
Claims
1. A wire clamp for a conductor tensile test, comprising a sleeve (1) that can be opened and closed, characterized in that: The sleeve (1) is provided with a support sleeve (2) coaxially disposed therewith, a limit platform (3) is provided at the end of the support sleeve (2), and a limit groove (4) is provided on the inner wall of the sleeve (1), and when the limit platform (3) is located in the limit groove (4), the support sleeve (2) and the sleeve (1) are relatively fixed; A sliding groove (5) is provided on the side wall of the support sleeve (2), and one end of the sliding groove (5) is inclined toward the axis of the support sleeve (2) to the other end thereof. A rectangular block (6) is provided in the sliding groove (5), and the rectangular block (6) can slide in the sliding groove (5) so that the bottom of the rectangular block (6) approaches or moves away from the axis of the support sleeve (2). The top of the rectangular block (6) is located outside the support sleeve (2) and is provided with a limiting convex head (7). A clamping groove (8) is provided on the inner wall of the sleeve (1), and when the limiting convex head (7) is located in the clamping groove (8), the rectangular block (6) and the sleeve (1) are relatively fixed.
2. A wire clamp for a conductor tensile test according to claim 1, characterized in that: The sleeve (1) is composed of two half sleeves (9), and the two half sleeves (9) are rotatably connected.
3. The wire clamp for wire tensile test according to claim 1, characterized in that: The rectangular blocks (6) are provided in three numbers, and the three rectangular blocks (6) are evenly distributed around the axis of the support sleeve (2).
4. A wire clamp for a conductor tensile test according to claim 3, characterized in that: A tilting platform (10) is provided at the bottom of the rectangular block (6), and the tilting platform (10) tilts toward the axis of the support sleeve (2) from one end of the rectangular block (6) to the other end of the rectangular block (6), and the tilting direction of the tilting platform (10) is consistent with the tilting direction of the sliding groove (5).
5. The wire clamp for wire tensile test according to claim 3, characterized in that: A plurality of clamping grooves (8) are provided on each sleeve (1), and are arranged in a direction parallel to the axis of the sleeve (1).
6. A wire clamp for a conductor tensile test according to claim 5, characterized in that: Graduations are marked on the edge of the sliding groove (5), and the distance between the graduations is the same as the distance between two adjacent clamping grooves (8) on the sleeve (1).
7. The wire clamp for a conductor tensile test according to claim 2, characterized in that: The two half sleeves (9) are hinged.
8. The wire clamp for wire tensile testing according to claim 6, characterized in that: The sliding groove (5) is rectangular.