U-shaped bending test equipment and method for top drive cable

By designing U-shaped bending test equipment and methods for top drive cables, the problem that existing equipment cannot detect the bending life of cables with large outer diameters and long moving distances is solved, and effective detection of cable line integrity and extension of cable life are achieved.

CN119738251APending Publication Date: 2025-04-01SHANGHAI QIFAN CABLE CO LTD +1
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Patent Information

Application Number
CN202411946461.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-27
Publication Date
2025-04-01

AI Technical Summary

Technical Problem

The existing cable bending test methods and equipment are not suitable for detecting cable bending life with large outer diameters and long moving distances, resulting in the cable being prone to core breakage during drilling.

Method used

A U-shaped bending test equipment and method for top drive cables is designed. Through the coordination of the retracting and releasing system and the test frame, the cable is moved up and down under U-shaped bending conditions, and the electrical control test system is used to test the cable's line integrity.

Benefits of technology

This equipment and method can effectively detect the line integrity of cables with large outer diameters and long moving distances under U-shaped bending conditions, extend the service life of the cable and avoid the problem of wire core breakage.

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Abstract

The invention provides U-shaped bending test equipment and method for a top drive cable, and the equipment comprises a winding and unwinding system which is used for winding and unwinding a steel wire rope, the output end of the winding and unwinding system is connected with the steel wire rope, and the winding and unwinding system is arranged on a floor at any height of a building; the top of the test rack is provided with a first guide wheel, the steel wire rope bypasses the first guide wheel and is connected with a lifting plate, the lifting plate is connected with the A end of the cable through a first connecting piece to drive the A end to move up and down in the Z direction, and the B end of the cable is fixed to the test rack through a second connecting piece; when the end A moves up and down, the cable is U-shaped. According to the invention, the U-shaped bending test of a cable with a long moving distance and a large outer diameter can be completed.
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