Clamp tool for testing drawing resistance of cable

Abstract

The utility model relates to the technical field of cable performance testing, in particular to a clamp tool for testing the drawing resistance of a cable, which comprises a regulation and control tool, the left side of the regulation and control tool is fixedly connected with a fixed frame, the inner wall of the fixed frame is fixedly provided with a driving motor, the output end of the driving motor is fixedly connected with a bidirectional threaded rod, and the bidirectional threaded rod is fixedly connected with a screw rod. The surfaces of different threads on the bidirectional threaded rod are in threaded connection with matched threaded sleeve plates correspondingly, the bottoms of the threaded sleeve plates are connected with limiting assemblies, the tops of the threaded sleeve plates are connected with locking assemblies, and the tops of the locking assemblies are connected with lower drawing clamping plates; according to the utility model, through the arrangement of the clamp tool which is fixedly and stably placed, bidirectional multi-point clamping constraint of cables of different specifications is carried out, it is guaranteed that a drawing test on the cables is completed through subsequent driving control, and the effects of freely adjusting cable interval pulling and multi-point abutting pulling are guaranteed.

Description

Technical Field

[0001] The utility model relates to a fixture tool for testing the pull-out resistance performance of a cable, belonging to the technical field of cable performance testing. Background Art

[0002] Cable is a rope-like cable made of several or several groups of conductors twisted together. Each group of conductors is insulated from each other and often twisted around a central core. The entire cable is covered with a highly insulating covering. The cable has the characteristics of internal power supply and external insulation. In cable testing and application, most occasions require a device that can conveniently and reliably connect the cable to the test equipment.

[0003] For example, patent publication number CN202220405744.1 is a fixture for testing the pull-out resistance of cables, comprising a clamping part and a connecting seat, wherein the clamping part is arranged on the surface of the connecting seat, the clamping part comprises an upper clamping plate, a lower clamping plate which is also fixed to the surface of the connecting seat and hinged to the upper clamping plate, the adjacent surfaces of the upper clamping plate and the lower clamping plate are both reserved with contact arc surfaces for clamping the outer wall of the cable, and the surface of the contact arc surface is provided with a limiting pad to prevent the cable from sliding; positioning slots are equidistantly provided on the outer wall of the upper clamping plate, and a clamping rod which cooperates with the positioning slot is further provided on one side of the lower clamping plate, a clamping block is fixed to the outer wall of the connecting seat, and a limiting slot is provided in the inner cavity of the clamping block, one end of the clamping rod is connected to the limiting slot of the clamping block, and the other end is connected to the positioning slot;

[0004] Since the above-mentioned fixture is a single clamping device, it can cause unidirectional force during the subsequent movement and pulling process, and it is impossible to perform two-way testing and judgment of the pulling resistance performance with different forces. In addition, it is necessary to take the fixture to move and pull the cable, which indirectly reduces the pulling efficiency of the cable and brings certain adverse effects to actual use. Therefore, improvement is needed. Utility Model Content

[0005] The purpose of the present invention is to provide a fixture for testing the pull-out resistance of cables. The present invention performs bidirectional multi-point clamping constraints on cables of different specifications by setting a fixed and stably placed fixture, thereby ensuring that subsequent drive control completes the pull-out test of the cables, and ensuring the free adjustment of cable interval pulling and multi-point tight pulling effects, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A fixture for testing the pull-out resistance of cables, comprising a regulating fixture, wherein the left side of the regulating fixture is fixedly connected to a fixing frame, the inner wall of the fixing frame is fixedly installed with a driving motor, the output end of the driving motor is fixedly connected to a bidirectional threaded rod, different threaded surfaces on the bidirectional threaded rod are respectively threadedly connected to corresponding threaded sleeves, the bottom of the threaded sleeve is connected to a limiting component, the top of the threaded sleeve is connected to a locking component, the top of the locking component is connected to a lower pulling splint, the top of the lower pulling splint near its rear side is rotatably connected to an upper pulling splint via a hinge, and the front sides of the upper pulling splint and the lower pulling splint are both threadedly connected to positioning screws via internal thread grooves.

[0008] Furthermore, a stabilizing platform is fixedly connected to the bottom of the regulating tool, and the lower surface of the stabilizing platform is provided as an anti-slip surface.

[0009] Furthermore, the limiting assembly includes a limiting plate and a limiting groove, the limiting plate is fixedly connected to the bottom of the threaded sleeve, the limiting groove is opened on the bottom of the inner wall of the regulating tooling, and the inner wall of the limiting groove and the surface of the limiting plate are clamped and adapted.

[0010] Furthermore, the locking assembly includes a magnetic locking plate and a magnetic locking slot plate, the magnetic locking plate is fixedly connected to the bottom of the lower pull-out splint, the magnetic locking slot plate is fixedly connected to the top of the threaded sleeve plate, and the inner wall of the magnetic locking slot plate and the surface of the magnetic locking plate are clamped and adapted.

[0011] Furthermore, an electric cylinder is fixedly installed inside the lower drawing splint and the upper drawing splint, the output end of the electric cylinder is fixedly connected to an anti-slip clamping plate, the surface of the anti-slip clamping plate is fixedly connected to a balance bar, and the inner wall of the lower drawing splint and the inner wall of the upper drawing splint are both provided with a balance groove, and the inner wall of the balance groove is slidably connected to the surface of the balance bar.

[0012] Furthermore, the side surfaces of the lower pulling-out splint and the upper pulling-out splint are connected to a fixing plate through a fixing screw, a spring telescopic rod is fixedly installed on the surface of the fixing plate, one end of the spring telescopic rod is fixedly connected to an arc-shaped splint, and a rubber abutting rod is fixedly connected to the surface of the fixing plate close to its side surface, and the surface of the rubber abutting rod abuts against the surface of the arc-shaped splint.

[0013] The beneficial effects of the utility model are:

[0014] The upper and lower pulleys are connected and locked by rotating the positioning screw to engage with the upper and lower pulleys, and the subsequent operation of the electric cylinder can drive the anti-skid abutment plate to move. The anti-skid abutment plates at the upper and lower positions can approach each other to restrain the cable from slipping. The setting of the balance bar and the balance groove ensures the smooth lifting and lowering movement of the anti-skid abutment plate, that is, the subsequent operation of the driving motor drives the two-way threaded rod to rotate, and under the limit setting of the limit component, the motion track of the threaded sleeve is adjusted. The trace is limited so that the rotation of the threaded rod can wait for the threaded sleeve to move. The operation of the threaded sleeve can drive the lower pulling clamp and the upper pulling clamp on it to move, so that the cable pulling effect of the two positions can be freely controlled. When testing the cable pulling of different spacings, the position adjustment of the left and right threaded sleeves can also be achieved. The magnetic locking plate and the magnetic locking slot plate are set to facilitate the subsequent replacement of the specifications of the lower pulling clamp and the upper pulling clamp above the threaded sleeve. A stabilizing platform is added under the regulating tooling to achieve anti-slip and stabilizing effect during the cable pulling test, ensuring the free adjustment of cable interval pulling and the effect of multi-point tight pulling.

[0015] In the utility model, fixing plates are added to the sides of the lower pulling clamp and the upper pulling clamp. The fixing plates are located above and below the cable. The cables can be clamped for a second time through the elastic push inside the spring telescopic rod, thereby preventing the cables from loosening and slipping during the subsequent pulling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the specific embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0017] Figure 1 This is a schematic diagram of the overall structure of a fixture for testing the pull-out resistance of cables in the utility model;

[0018] Figure 2 This is a front cross-sectional view of a fixture for testing the pull-out resistance of cables according to the present invention;

[0019] Figure 3 This is a front cross-sectional view of the lower drawing plate in a fixture for testing the pulling resistance of cables according to the present invention;

[0020] Figure 4 This is an enlarged view of point A of a fixture for testing the pull-out resistance of cables in the utility model;

[0021] Figure 5This is an enlarged view of point B of a fixture for testing the pull-out resistance of cables in the utility model;

[0022] Numbers in the figure: 1. Control tooling; 2. Fixing frame; 3. Driving motor; 4. Bidirectional threaded rod; 5. Threaded sleeve; 6. Lower pull-out splint; 7. Upper pull-out splint; 8. Positioning screw; 9. Stabilizing platform; 10. Limiting plate; 11. Limiting groove; 12. Magnetic locking plate; 13. Magnetic locking groove plate; 14. Electric cylinder; 15. Anti-slip abutment plate; 16. Balance rod; 17. Balance groove; 18. Fixing plate; 19. Spring telescopic rod; 20. Arc splint; 21. Rubber abutment rod. DETAILED DESCRIPTION

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

[0024] Example 1, please refer to Figure 1-Figure 5 , the utility model provides a technical solution:

[0025] A fixture for testing the pull-out resistance of cables, comprising an adjusting fixture 1, wherein the left side of the adjusting fixture 1 is fixedly connected to a fixing frame 2, the inner wall of the fixing frame 2 is fixedly installed with a driving motor 3, the output end of the driving motor 3 is fixedly connected to a bidirectional threaded rod 4, different threaded surfaces on the bidirectional threaded rod 4 are respectively threadedly connected to corresponding threaded sleeves 5, the bottom of the threaded sleeve 5 is connected to a limiting component, the top of the threaded sleeve 5 is connected to a locking component, the top of the locking component is connected to a lower pulling splint 6, the top of the lower pulling splint 6 near its rear side is rotatably connected to an upper pulling splint 7 through a hinge, and the front side of the upper pulling splint 7 and the front side of the lower pulling splint 6 are both threadedly connected to a positioning screw 8 through an internal thread groove.

[0026] Specifically, such as Figure 1-Figure 5 As shown, a stabilizing platform 9 is fixedly connected to the bottom of the regulating tool 1, and the lower surface of the stabilizing platform 9 is provided as an anti-slip surface. The stabilizing platform 9 is added below the regulating tool 1 to achieve an anti-slip and stabilizing effect during the cable pulling test.

[0027] Specifically, such as Figure 1-Figure 5As shown, the limiting assembly includes a limiting plate 10 and a limiting groove 11. The limiting plate 10 is fixedly connected to the bottom of the threaded sleeve 5. The limiting groove 11 is opened on the bottom of the inner wall of the regulating tool 1. The inner wall of the limiting groove 11 is engaged and adapted with the surface of the limiting plate 10. By setting the limiting plate 10 and the limiting groove 11, the movement trajectory of the threaded sleeve 5 is limited, so that the threaded rod can rotate until the threaded sleeve 5 moves. The locking assembly includes a magnetic locking plate 12 and a magnetic locking groove plate 13. The magnetic locking plate 12 is fixedly connected to the bottom of the lower drawing clamp 6. The magnetic locking groove plate 13 is fixedly connected to the top of the threaded sleeve 5. The inner wall of the magnetic locking groove plate 13 is engaged and adapted with the surface of the magnetic locking plate 12. By setting the magnetic locking plate 12 and the magnetic locking groove plate 13, the specifications of the lower drawing clamp 6 and the upper drawing clamp 7 above the threaded sleeve 5 can be subsequently replaced.

[0028] Example 2, please refer to Figure 1-Figure 5 The difference between this embodiment and embodiment 1 is that an electric cylinder 14 is fixedly installed inside the lower drawing splint 6 and the upper drawing splint 7, the output end of the electric cylinder 14 is fixedly connected to an anti-slip clamping plate 15, the surface of the anti-slip clamping plate 15 is fixedly connected to a balance bar 16, and the inner wall of the lower drawing splint 6 and the inner wall of the upper drawing splint 7 are both provided with a balance groove 17, and the inner wall of the balance groove 17 is slidably connected to the surface of the balance bar 16. The side surfaces of the lower pulling clamp 6 and the upper pulling clamp 7 are connected to a fixing plate 18 by a fixing screw, and a spring telescopic rod 19 is fixedly installed on the surface of the fixing plate 18, and one end of the spring telescopic rod 19 is fixedly connected to an arc clamp 20, and the surface of the fixing plate 18 close to its side surface is fixedly connected to a rubber abutting rod 21, and the surface of the rubber abutting rod 21 abuts against the surface of the arc clamp 20, and the electric cylinder 14 can drive the anti-skid abutting plate to move, and the anti-skid abutting plates at the upper and lower positions can approach each other to restrain the cable from slipping. The setting of the balance bar 16 and the balance groove 17 ensures the smooth lifting and lowering movement of the anti-skid abutting plate. Because fixing plates 18 are added to the sides of the lower pulling clamp 6 and the upper pulling clamp 7, the fixing plates 18 are located at the upper and lower positions of the cable, and the cable can be clamped for a second time by the elastic push inside the spring telescopic rod 19 to avoid the cable slipping during the subsequent pulling process.

[0029] The working principle of the present invention is as follows: when in use, the cable to be tested for pulling performance test can be placed between the lower pulling clamp 6 and the upper pulling clamp 7, and then the upper pulling clamp 7 is rotated to be placed flat on the lower pulling clamp 6. After the positioning screw 8 is rotated to abut, the upper pulling clamp 7 and the lower pulling clamp 6 are connected and locked, and the subsequent operation of the electric cylinder 14 can drive the anti-skid abutment plate to move, and the anti-skid abutment plates at the upper and lower positions can be close to each other to prevent the cable from slipping. The smooth lifting and lowering movement of the anti-skid abutment plate is guaranteed by the setting of the balance bar 16 and the balance groove 17. Because fixed plates 18 are added to the sides of the lower pulling clamp 6 and the upper pulling clamp 7, the fixed plates 18 are located at the upper and lower positions of the cable, and the cable can be clamped for a second time through the elastic push inside the spring telescopic rod 19 to avoid the cable from slipping during the subsequent pulling process. In order to drive the bidirectional threaded rod 4 to rotate in the subsequent driving motor 3, the movement trajectory of the threaded sleeve 5 is limited by the setting of the limit plate 10 and the limit groove 11, so that the threaded rod can rotate until the threaded sleeve 5 moves. The operation of the threaded sleeve 5 can drive the lower pulling clamp 6 and the upper pulling clamp 7 on it to move, which can realize the free control of the cable pulling effect of the two positions, and according to the cable pulling test of different spacings, the position adjustment of the left and right threaded sleeves 5 can also be realized. The magnetic locking plate 12 and the magnetic locking groove plate 13 are set to facilitate the subsequent specification replacement of the lower pulling clamp 6 and the upper pulling clamp 7 above the threaded sleeve 5. A stabilizing platform 9 is added under the regulating tool 1, which can play an anti-slip and stabilizing role in the cable pulling test, and ensure the free adjustment of cable interval pulling and multi-point tight pulling effects.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for testing the pull-out resistance of a cable, comprising a control fixture (1), characterized in that: The left side of the regulating tool (1) is fixedly connected to a fixing frame (2), the inner wall of the fixing frame (2) is fixedly mounted with a driving motor (3), the output end of the driving motor (3) is fixedly connected to a bidirectional threaded rod (4), different threaded surfaces on the bidirectional threaded rod (4) are respectively threadedly connected with matching threaded sleeves (5), the bottom of the threaded sleeve (5) is connected to a limiting component, the top of the threaded sleeve (5) is connected to a locking component, the top of the locking component is connected to a lower pull-out clamp (6), the top of the lower pull-out clamp (6) near its rear side is rotatably connected to an upper pull-out clamp (7) via a hinge, and the front side of the upper pull-out clamp (7) and the front side of the lower pull-out clamp (6) are both threadedly connected to positioning screws (8) via internal thread grooves.

2. The cable pull-out resistance test fixture according to claim 1, characterized in that: The bottom of the regulating tool (1) is fixedly connected to a stabilizing platform (9), and the lower surface of the stabilizing platform (9) is provided as an anti-slip surface.

3. The fixture for testing the cable pull-out resistance performance according to claim 1, characterized in that: The limiting assembly comprises a limiting plate (10) and a limiting groove (11); the limiting plate (10) is fixedly connected to the bottom of the threaded sleeve (5); the limiting groove (11) is formed on the bottom of the inner wall of the regulating tool (1); the inner wall of the limiting groove (11) and the surface of the limiting plate (10) are snap-fitted and adapted.

4. The cable pull-out resistance test fixture according to claim 1, characterized in that: The locking assembly comprises a magnetic locking plate (12) and a magnetic locking slot plate (13); the magnetic locking plate (12) is fixedly connected to the bottom of the lower pull-out clamp (6); the magnetic locking slot plate (13) is fixedly connected to the top of the threaded sleeve plate (5); the inner wall of the magnetic locking slot plate (13) and the surface of the magnetic locking plate (12) are snap-fitted and adapted.

5. The cable pull-out resistance test fixture according to claim 1, characterized in that: An electric cylinder (14) is fixedly installed inside the lower drawing clamp (6) and inside the upper drawing clamp (7); an output end of the electric cylinder (14) is fixedly connected to an anti-skid clamping plate (15); a balance bar (16) is fixedly connected to the surface of the anti-skid clamping plate (15); and a balance groove (17) is provided on the inner wall of the lower drawing clamp (6) and the inner wall of the upper drawing clamp (7); the inner wall of the balance groove (17) is slidably connected to the surface of the balance bar (16).

6. The cable pull-out resistance test fixture according to claim 1, characterized in that: The side surfaces of the lower pull-out clamp (6) and the upper pull-out clamp (7) are both connected to a fixing plate (18) via fixing screws; a spring telescopic rod (19) is fixedly mounted on the surface of the fixing plate (18); one end of the spring telescopic rod (19) is fixedly connected to an arc-shaped clamp (20); a rubber abutting rod (21) is fixedly connected to the surface of the fixing plate (18) close to the side surface; the surface of the rubber abutting rod (21) abuts against the surface of the arc-shaped clamp (20).

Images