A special cable tensile test fixture

Abstract

The utility model discloses a special cable tensile test fixture, comprising a connecting fixture and a connecting pipe, one end of the connecting pipe is connected to the special cable, the other end of the connecting pipe is connected to the connecting fixture, the connecting fixture is connected to a tensile testing machine, the connecting fixture comprises a cylinder and a friction block, the friction block is arranged at one end of the cylinder, the friction block is connected to the tensile testing machine, and one end of the connecting pipe extends into and is fixed in the cylinder. An external positioning hole is arranged on the cylinder. An external fastening hole is arranged on the cylinder. An internal positioning hole corresponding to the external positioning hole is arranged at one end of the connecting pipe, and the internal positioning hole and the external positioning hole are positioned by a positioning pin. An internal fastening hole corresponding to the external fastening hole is arranged on the connecting pipe. One end of the connecting pipe is a cylindrical structure, and the special cable extends into the connecting pipe. One end of the connecting pipe connected to the special cable is provided with a hexagonal embossing. The utility model solves the problem that the existing connecting fixture is not firmly connected to the tensile testing machine, and the connecting fixture is not firmly connected to the special cable.

Description

Technical Field

[0001] The utility model relates to the field of cable testing equipment, in particular to a special cable tensile testing fixture. Background Art

[0002] Special cables are a series of products with unique properties and special structures. Compared with ordinary wires and cables that are large in quantity and wide in scope, they have the characteristics of higher technical content, stricter usage conditions, smaller batches and higher added value.

[0003] Special cables have one or more properties such as high temperature resistance, acid and alkali resistance, termite resistance, water pressure resistance, waterproof, good tensile properties, etc. They are used in aerospace, locomotives, energy, steel, non-ferrous metal smelting, oil extraction, motors, ships, aircraft, nuclear power plants, etc. Special cables have also been used in the military market, civilian market, oil platforms, etc. Due to the particularity of a certain aspect and a special working occasion, there is a high demand for the corresponding performance. For example, for special cables with tensile properties, how to verify their tensile properties through tensile tests is the main difficulty. One is the connection reliability between the fixture and the test machine, and the other is the connection reliability between the fixture and the special cable. Utility Model Content

[0004] The utility model aims to provide a special cable tensile test fixture to solve the problems that the existing tensile test cannot meet the requirements of special cables, the connection between the connecting fixture and the tensile testing machine is not reliable, and the connection between the connecting fixture and the special cable is not reliable.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a special cable tensile test fixture, comprising a connecting fixture and a connecting tube, one end of the connecting tube is connected to the special cable, the other end of the connecting tube is connected to the connecting fixture, the connecting fixture is connected to a tensile testing machine, the connecting fixture comprises a cylinder and a friction block, the friction block is arranged at one end of the cylinder, the friction block is connected to the tensile testing machine, and one end of the connecting tube extends into and is fixed in the cylinder.

[0006] As a further improvement of the above technical solution:

[0007] The cylinder is provided with an external positioning hole.

[0008] The cylinder is provided with an external fastening hole.

[0009] An inner positioning hole corresponding to the outer positioning hole is arranged at one end of the connecting pipe, and the inner positioning hole and the outer positioning hole are positioned by a positioning pin.

[0010] The connecting pipe is provided with an inner fastening hole corresponding to the outer fastening hole.

[0011] One end of the connecting tube is a cylindrical structure, and the special cable extends into the connecting tube.

[0012] One end of the connecting tube connected to the special cable is provided with a hexagonal embossing.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model solves the problems that the existing tensile test cannot meet the requirements of special cables, the connection between the connecting fixture and the tensile testing machine is not reliable, and the connection between the connecting fixture and the special cable is not reliable. The two ends of the connecting pipe are connected to the connecting fixture and the special cable respectively, and one end is designed with an inner positioning hole. The outer positioning hole and the inner positioning hole are penetrated by the positioning pin to realize the one-time connection and positioning of the connecting fixture and the connecting pipe. The middle part of the connecting pipe is designed with an inner fastening hole, and the fastening bolt is screwed into the inner fastening hole of the connecting pipe through the outer fastening hole to realize the secondary connection and positioning of the connecting fixture and the connecting pipe. The outer connecting wall of the connecting pipe and the inner connecting sleeve of the connecting fixture adopt a clearance fit method, which firstly ensures that there is no shaking during the tensile test and realizes a stable tensile test, and secondly, the outer connecting wall of the connecting pipe can be smoothly inserted into the inner connecting sleeve of the connecting fixture. After the special cable is put in, the tail of the connecting pipe is pressed into a hexagonal embossing by a hydraulic device, so that the special cable can be fixed in the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the installation structure of the special cable of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of the special cable tensile test fixture of the utility model;

[0017] Figure 3 This is a schematic diagram of the explosion structure of the special cable tensile test fixture of the utility model;

[0018] Figure 4 This is a schematic diagram of the connecting pipe structure of the utility model.

[0019] Figure numerals: 1. Connecting fixture; 10. Cylinder; 11. Friction block; 12. External positioning hole; 13. External fastening hole; 2. Connecting pipe; 21. Internal positioning hole; 22. Internal fastening hole; 25. Hexagonal embossing; 3. Special cable; 4. Positioning pin; 5. Fastening bolt. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate directions or positions, and the relationship is based on the directions or positional relationships shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 4 As shown, the special cable tensile test fixture of this embodiment includes a connecting fixture 1 and a connecting tube 2. One end of the connecting tube 2 is connected to the special cable 3, and the other end of the connecting tube 2 is connected to the connecting fixture 1. The connecting fixture 1 is connected to the tensile testing machine. The connecting fixture 1 includes a cylinder 10 and a friction block 11. The friction block 11 is arranged at one end of the cylinder. The friction block 11 is connected to the tensile testing machine. One end of the connecting tube 2 extends into and is fixed in the cylinder 10. The friction block 11 is provided with tooth patterns, and the friction coefficient is large, and it is not easy to detach from the tensile testing machine. The outer connecting wall of the connecting tube 2 and the inner connecting sleeve of the connecting fixture 1 adopt a clearance fit method. First, it ensures that there is no shaking during the tensile test and realizes a stable tensile test. Second, the outer connecting wall of the connecting tube 2 can be smoothly inserted into the inner connecting sleeve of the connecting fixture 1.

[0025] An outer positioning hole 12 is provided on the cylinder body 10 .

[0026] The cylinder 10 is provided with an external fastening hole 13. The external fastening hole 13 is a threaded hole for installing a screw.

[0027] An inner positioning hole 21 corresponding to the outer positioning hole 12 is provided at one end of the connecting pipe 2 , and the inner positioning hole 21 and the outer positioning hole 12 are positioned by a positioning pin.

[0028] The connecting pipe 2 is provided with an inner fastening hole 22 corresponding to the outer fastening hole 13 .

[0029] One end of the connecting tube 2 is a cylindrical structure, and the special cable 3 extends into the connecting tube 2.

[0030] One end of the connecting tube 2 connected to the special cable 3 is provided with a hexagonal embossing 25. After the special cable 3 is put in, the tail of the connecting tube 2 is pressed into the hexagonal embossing 25 by a hydraulic device, so that the special cable can be fixed in the connecting tube 2.

[0031] When in use, connect and fix the friction block 11 of the connecting fixture 1 to the upper part of the tensile testing machine. Insert the connecting pipe 2 into the connecting fixture 1, use the positioning pin 4 to pass through the inner positioning hole 12 and the outer positioning hole 21, use the fastening bolt 5 to screw into the outer fastening hole 13, and then tighten it into the inner fastening hole 22. Insert the special cable 3 into the connecting pipe 2, and then use the hydraulic device to press the tail of the connecting pipe 2 to press out the hexagonal embossing 25, and fix the special cable 3 inside the connecting pipe 2. Repeat the above steps to connect and fix the other end of the special cable 3 to the lower part of the tensile testing machine. Click the control button of the tensile testing machine to test the tensile performance of the special cable 3.

[0032] The above is only an embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A special cable tensile test fixture, characterized in that: The invention comprises a connecting fixture (1) and a connecting pipe (2), wherein one end of the connecting pipe (2) is connected to a special cable (3), and the other end of the connecting pipe (2) is connected to the connecting fixture (1), and the connecting fixture (1) is connected to a tensile testing machine. The connecting fixture (1) comprises a cylinder (10) and a friction block (11), and the friction block (11) is arranged at one end of the cylinder, and the friction block (11) is connected to the tensile testing machine. One end of the connecting pipe (2) extends into and is fixed in the cylinder (10).

2. The special cable tensile test fixture according to claim 1, characterized in that: The cylinder (10) is provided with an external positioning hole (12).

3. The special cable tensile test fixture according to claim 1, characterized in that: The cylinder (10) is provided with an external fastening hole (13).

4. The special cable tensile test fixture according to claim 2, characterized in that: An inner positioning hole (21) corresponding to the outer positioning hole (12) is provided at one end of the connecting pipe (2), and the inner positioning hole (21) and the outer positioning hole (12) are positioned by a positioning pin.

5. The special cable tensile test fixture according to claim 3, characterized in that: The connecting pipe (2) is provided with an inner fastening hole (22) corresponding to the outer fastening hole (13).

6. The special cable tensile test fixture according to claim 3, characterized in that: One end of the connecting tube (2) is a cylindrical structure, and the special cable (3) extends into the connecting tube (2).

7. The special cable tensile test fixture according to claim 6, characterized in that: One end of the connecting pipe (2) connected to the special cable (3) is provided with a hexagonal embossing (25).

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