Cable material wear resistance test tool

Abstract

The utility model discloses a cable material wear-resistant test tool, which relates to the technical field of cable material wear-resistant testers, and comprises an experiment table and an operation box arranged on one side of the experiment table, two groups of symmetrically arranged fixing rods are arranged on the upper side of the experiment table, the upper end of each group of fixing rods is fixedly connected with an end plate, and the end plate is fixedly connected with the operation box. And a limiting rod is fixedly installed between the two end plates and is in sliding fit with one side of the bearing block, a column rod is movably installed on the bearing block, the lower end of the column rod is rotationally connected with a friction mechanism, and the friction mechanism changes the friction angle of the cable material through rotation adjustment. Through a friction mechanism composed of the first rotating rod, the adjusting plate and the adjusting rod and a ratchet wheel and pawl locking structure, synchronous combination and angle adjustment of friction wheels are achieved, forward and multi-angle abrasion resistance testing can be carried out on cable materials, and the detection applicability and accuracy are improved.

Description

Technical Field

[0001] This utility model relates to the field of cable material abrasion resistance testing technology, and in particular to a cable material abrasion resistance testing fixture. Background Technology

[0002] In the field of cable manufacturing, especially in the production of flame-retardant smokeless cable materials, the wear resistance of materials is one of the important indicators for measuring their service life and safety reliability. Since such cables are widely used in high-rise buildings, subway tunnels, power facilities and other places with high requirements for fire prevention and environmental protection, their sheaths or insulation layers will inevitably be subjected to various mechanical stresses such as bending, dragging and friction during long-term operation, which can easily lead to problems such as surface wear, cracking or even failure.

[0003] Currently, the testing of the abrasion resistance of cable materials is usually carried out by simulation test, that is, by applying a certain frequency and intensity of friction to the sample through abrasion test fixture in order to evaluate its abrasion resistance.

[0004] However, existing abrasion testing devices generally suffer from simple structures and fixed testing modes. They mainly focus on positive friction testing of cable material surfaces, making it difficult to effectively simulate complex working conditions such as tilting friction and side wear that may occur during actual use. In addition, traditional equipment lacks flexibility in terms of friction angle adjustment, friction wheel combination methods, and test parameter control, making it difficult to meet the testing needs of different types of cable materials, especially flame-retardant smokeless cable materials, under various stress conditions. Utility Model Content

[0005] This utility model provides a test fixture for abrasion resistance testing of cable materials, including a test bench and an operation box set on one side of the test bench. The upper side of the test bench is provided with two sets of symmetrically arranged fixing rods. Each set of fixing rods is fixedly connected to an end plate at its upper end. A limit rod is fixedly installed between the two end plates. The limit rod is slidably engaged with one side of a bearing block. A column is movably installed on the bearing block. A friction mechanism is rotatably connected to the lower end of the column. The friction mechanism can be adjusted by rotation to change the angle of friction on the cable material.

[0006] Preferably, the friction mechanism includes a rotating rod 1 rotatably connected to the bottom of the column rod, an adjusting plate fixedly connected to the lower end of the rotating rod 1, through slots symmetrically opened on the adjusting plate, an adjusting rod slidably arranged in each through slot, a rotating rod 2 rotatably arranged at the lower end of each of the two adjusting rods, and a friction wheel rotatably arranged at the lower end of each of the two rotating rod 2s.

[0007] Preferably, a base plate is fixedly provided at the lower end of the column rod, and a pawl is rotatably provided on the base plate. The pawl is connected to the fixed seat on the base plate by a spring, and a ratchet is fixedly connected to the upper end of the rotating rod, which meshes with the pawl.

[0008] Preferably, a reciprocating screw two is rotatably mounted on the adjusting plate on the upper side of the through groove, and the reciprocating screw two passes through the adjusting rod and is threadedly connected to the adjusting rod.

[0009] Preferably, a positioning wheel is fixedly connected to the upper end of the rotating rod 2, and the edge of the positioning wheel is provided with several toothed grooves. An insert rod is slidably provided on the adjusting rod, and the insert rod is inserted into the corresponding toothed groove.

[0010] Preferably, one end of each of the two friction wheels is fixedly connected to a side wheel.

[0011] Preferably, one of the friction wheels has a locking block at one end, and the other friction wheel has a locking groove at one end, with the locking block engaging with the locking groove.

[0012] Preferably, a counterweight is movably sleeved on the upper end of the column.

[0013] Preferably, the upper surface of the experimental platform is symmetrically provided with positioning frames, and the positioning frames are threaded with screws, the lower end of which is rotatably connected to the positioning plate.

[0014] Preferably, a reciprocating screw is rotatably provided between the two sets of end plates. The reciprocating screw is threadedly connected to the other side of the bearing block, and one end of the reciprocating screw is connected to the output shaft of the motor.

[0015] This utility model provides a cable material abrasion resistance testing fixture, which, compared with the prior art, has the following advantages:

[0016] 1. This utility model uses a friction mechanism composed of a rotating rod, an adjusting plate, and two adjusting rods to enable the two friction wheels to merge and separate synchronously. When the two sets of friction wheels merge, a forward friction test can be performed on the surface of the cable material to simulate the axial wear of the cable during normal use. At the same time, through the locking structure of the ratchet and pawl, the operator can rotate the rotating rod to drive the entire friction mechanism to rotate, thereby flexibly adjusting the friction angle between the friction wheels and the cable material to meet the wear resistance testing requirements under different tilt directions, thus improving the diversity and accuracy of the test.

[0017] 2. This utility model features a side wheel at one end of each friction wheel. When a wear resistance test is required on the edge of the cable material, the two sets of side wheels can be rotated to the inner position, and the rotation of the reciprocating screw two can fix them at an appropriate distance, so that the two side wheels are respectively in contact with the two sides of the cable material. At this time, the friction mechanism can slide along the reciprocating screw one under the drive of the motor, driving the side wheels to perform a wear test on the edge of the cable material. This effectively evaluates the edge wear resistance performance of the material under complex stress conditions in actual use, which not only improves the functional versatility of the equipment, but also enhances its adaptability to different types of cable materials, and has good application prospects. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0020] Figure 2 This is a partial schematic diagram of the experimental platform structure according to an embodiment of the present invention;

[0021] Figure 3 This is an embodiment of the present utility model. Figure 2 A schematic diagram of the structure at point A;

[0022] Figure 4 This is a schematic diagram of the column and other structures according to an embodiment of the present utility model;

[0023] Figure 5 This is a structural breakdown diagram of the counterweight block, bearing block, etc., in an embodiment of this utility model;

[0024] Figure 6 This is a schematic diagram of the friction mechanism and other structures in an embodiment of the present utility model;

[0025] Figure 7 This is an embodiment of the present utility model. Figure 6 A schematic diagram of the structure at point B;

[0026] Figure 8 This is a schematic diagram of the friction wheel and other structures in an embodiment of the present invention.

[0027] Figure label:

[0028] 1. Experimental table; 2. Control box; 3. Fixing rod; 4. End plate; 5. Limiting rod; 6. Reciprocating lead screw one; 7. Positioning frame; 8. Screw; 9. Positioning plate; 10. Bearing block; 11. Column rod; 12. Counterweight block; 13. Base plate; 14. Rotating rod one; 15. Ratchet; 16. Adjusting plate; 17. Pawl; 18. Spring; 19. Through groove; 20. Adjusting rod; 21. Rotating rod two; 22. Friction wheel; 23. Side wheel; 24. Reciprocating lead screw two; 25. Positioning wheel; 26. Insert rod. Detailed Implementation

[0029] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] Please refer to Figures 1-8 This utility model provides a cable material abrasion resistance testing fixture, including a test bench 1 and an operation box 2 set on one side of the test bench 1. The operation box 2 integrates a control circuit, a motor drive module and related operation interface, which facilitates centralized control of the entire testing process.

[0031] Two sets of fixing rods 3 are symmetrically arranged on both sides of the upper surface of the experimental platform 1. Each set of fixing rods 3 is fixedly connected to an end plate 4 at its top. Between the two end plates 4, there are two parallel limit rods 5 and a reciprocating screw 6. The limit rod 5 is fixedly set and slides with one side of the bearing block 10 to guide the bearing block 10 to move in a straight line. The reciprocating screw 6 is rotatably set and threadedly connected to the other side of the bearing block 10. It is driven to rotate by a motor installed on the end plate 4, thereby driving the bearing block 10 to reciprocate along the limit rod 5.

[0032] A column rod 11 is movably mounted on the bearing block 10. A counterweight block 12 is sleeved on the upper end of the column rod 11. The counterweight block 12 is a standard weight, and different weights can be replaced according to the test requirements to adjust the pressure value applied to the friction wheel 22, thereby simulating different wear intensity conditions.

[0033] A friction mechanism is provided at the lower end of the column rod 11. The friction mechanism includes a base plate 13 fixedly connected to the column rod 11. The upper end of the rotating rod 14 passes through the base plate 13 and is rotatably connected to the bottom of the column rod 11. A ratchet 15 is fixedly connected to the top of the rotating rod 14. A pawl 17 is also rotatably provided on the base plate 13 and is connected to the fixed seat on the base plate 13 through a spring 18, so that the pawl 17 can automatically rebound and stably engage with the ratchet 15. By manually rotating the rotating rod 14, the overall angle of the friction mechanism can be adjusted, and it can be locked at any set angle by the ratchet 15 and the pawl 17 to meet the wear resistance test requirements under different tilt directions.

[0034] Furthermore, an adjusting plate 16 is fixedly connected to the bottom of the rotating rod 14. Two through slots 19 are symmetrically opened on the adjusting plate 16. An adjusting rod 20 is slidably arranged in each through slot 19. A reciprocating screw 24 is rotatably installed on the upper part of the adjusting plate 16. The reciprocating screw 24 passes through the adjusting rod 20 and is threadedly connected to it. By rotating the reciprocating screw 24, the two adjusting rods 20 can be moved closer or further apart synchronously, thereby controlling the distance between the two sets of friction wheels 22.

[0035] Each adjusting rod 20 has a rotating rod 21 rotatably mounted at its lower end. A positioning wheel 25 is fixedly connected to the upper end of the rotating rod 21. The edge of the positioning wheel 25 has multiple toothed grooves. The adjusting rod 20 has an insert rod 26 that can be inserted into the corresponding toothed groove to lock the rotation angle of the rotating rod 21.

[0036] The lower ends of the two rotating rods 21 are respectively connected to friction wheels 22, which are used to contact the cable material sample and conduct friction tests. One end of each friction wheel 22 is fixedly connected to a side wheel 23, which is used to simulate the wear condition of the cable side.

[0037] Furthermore, one of the friction wheels 22 has a locking block at the other end, and the other friction wheel 22 has a locking groove at the corresponding position. The two can be locked together. When the two sets of friction wheels 22 are combined, a forward friction test can be performed on the surface of the cable material. When the side wheel 23 is rotated to the inside and symmetrically attached to both sides of the cable material, a transverse wear test can be performed on the side of the cable material.

[0038] like Figure 2 As shown, in order to ensure the stability of the cable material sample during the test, positioning frames 7 are symmetrically arranged on the upper surface of the test bench 1. Each positioning frame 7 is threaded with a screw 8, and the lower end of the screw 8 is rotatably connected to a positioning plate 9. By tightening the screw 8, the two ends of the cable material to be tested can be firmly clamped to prevent it from shifting or sliding during the test.

[0039] In practice, the staff first places the cable to be tested in the center of the test bench 1, and fixes both ends of it with the screws 8 on the positioning frame 7 and the positioning plate 9. Then, the appropriate friction mode is selected according to the test type.

[0040] If a forward friction test is to be performed, the two friction wheels 22 can be combined to make them axially rub against the surface of the cable material;

[0041] If a multi-angle friction test is required, the friction angle can be adjusted by rotating the rotating rod 14 and locked by the ratchet 15 and the pawl 17.

[0042] If a side friction test is required, rotate the rotating rod 21 to rotate the side wheel 23 to the inside, and adjust the spacing by sliding the adjusting rod 20 in the through groove 19 to fit the side of the cable material. Then start the motor to drive the reciprocating screw 6 to rotate, so that the friction mechanism rubs the cable back and forth, thereby evaluating the wear resistance of the cable material side.

[0043] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A test fixture for abrasion resistance of cable materials, comprising a test bench (1) and an operation box (2) disposed on one side of the test bench (1), characterized in that: The experimental platform (1) has two sets of symmetrically arranged fixed rods (3) on its upper side. Each set of fixed rods (3) is fixedly connected to an end plate (4) at its upper end. A limit rod (5) is fixedly installed between the two end plates (4). The limit rod (5) is slidably engaged with one side of the bearing block (10). A column rod (11) is movably installed on the bearing block (10). A friction mechanism is rotatably connected to the lower end of the column rod (11). The friction mechanism is adjusted by rotation to change the angle of friction on the cable material.

2. The cable material abrasion resistance testing fixture according to claim 1, characterized in that: The friction mechanism includes a rotating rod (14) rotatably connected to the bottom of the column (11). An adjusting plate (16) is fixedly connected to the lower end of the rotating rod (14). A through groove (19) is symmetrically opened on the adjusting plate (16). An adjusting rod (20) is slidably arranged in each through groove (19). A rotating rod (21) is rotatably arranged at the lower end of each of the two adjusting rods (20). A friction wheel (22) is rotatably arranged at the lower end of each of the two rotating rods (21).

3. The cable material abrasion resistance testing fixture according to claim 2, characterized in that: The lower end of the column rod (11) is fixedly provided with a base plate (13), and a pawl (17) is rotatably provided on the base plate (13). The pawl (17) is connected to the fixed seat on the base plate (13) by a spring (18). The upper end of the rotating rod (14) is fixedly connected with a ratchet (15), and the ratchet (15) meshes with the pawl (17).

4. The cable material abrasion resistance testing fixture according to claim 3, characterized in that: A reciprocating screw 2 (24) is rotatably mounted on the adjusting plate (16) on the upper side of the through groove (19). The reciprocating screw 2 (24) passes through the adjusting rod (20) and is threadedly connected to the adjusting rod (20).

5. The cable material abrasion resistance testing fixture according to claim 4, characterized in that: The upper end of the rotating rod (21) is fixedly connected to a positioning wheel (25). The edge of the positioning wheel (25) is provided with several tooth grooves. An insert rod (26) is slidably provided on the adjusting rod (20). The insert rod (26) is inserted into the corresponding tooth groove.

6. The cable material abrasion resistance testing fixture according to claim 5, characterized in that: Each of the two friction wheels (22) has a side wheel (23) fixedly connected to one end.

7. The cable material abrasion resistance testing fixture according to claim 6, characterized in that: One of the friction wheels (22) has a locking block at one end, and the other friction wheel (22) has a locking groove at the other end, with the locking block engaging with the locking groove.

8. The cable material abrasion resistance testing fixture according to claim 1, characterized in that: The upper end of the column (11) is movably fitted with a counterweight (12).

9. The cable material abrasion resistance testing fixture according to claim 1, characterized in that: The upper surface of the experimental platform (1) is symmetrically provided with positioning frames (7), and a screw (8) is threadedly connected to the positioning frame (7). The lower end of the screw (8) is rotatably connected to the positioning plate (9).

10. The cable material abrasion resistance testing fixture according to claim 9, characterized in that: A reciprocating screw (6) is rotatably provided between the two sets of end plates (4). The reciprocating screw (6) is threadedly connected to the other side of the bearing block (10), and one end of the reciprocating screw (6) is connected to the output shaft of the motor.

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