Tank locking cradle test system and reliability test method

Abstract

The invention discloses a tank locking cradle test system and a reliability test method. A device comprises a mechanical test rack, a tray, a first servo oil cylinder and a second servo oil cylinder, the first servo oil cylinder and the second servo oil cylinder are both controlled by a servo hydraulic station, and a displacement sensor is arranged in a piston rod of the first servo oil cylinder. The method comprises the following steps: step 1, determining a relationship between the rebound force and the rebound amount of a hoisting steel wire rope; 2, determining a relationship between the pressure of the servo oil cylinder and the elongation of the piston rod; 3, locking and fixing a rocker arm; 4, testing the reliability of a tank locking cradle rocker arm mechanism; and 5, testing the reliability of a tank supporting mechanism of a tank locking cradle. According to the tank locking cradle test system and a reliability test method provided by the invention, the cage locking cradle test system is used for carrying out reliability test on the cage locking cradle, so that the elastic force change of the lifting steel wire rope after a cage enters a large piece and the cage supporting force borne by a supporting claw of the cage locking cradle when the cage enters the large piece can be really simulated, therefore, the problem that the use reliability of the cage locking cradle under the heavy load condition cannot be guaranteed can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of vertical shaft hoisting systems, and in particular relates to a tank lock cradle test system and a reliability test method. Background technique [0002] With the development of coal mines towards the goal of large-scale, safe and high-efficiency, the vertical shaft hoisting system also develops super-large, and the load of the cage increases accordingly, and the maximum load can reach more than 40-50 tons. After the heavy-duty equipment enters or exits the tank, the steel wire rope will produce downward or upward elastic elongation. The elastic elongation of the steel wire rope is often greater than 400mm at the docking point of the deep underground cage in the mine. The running operation causes great safety hazards, such as the instability of the carrying equipment caused by the large shaking, the excessive rebound force affects the fixed beam or other auxiliary functional equipment at the docking posit...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a tank lock cradle test system for the above-mentioned deficiencies in the prior art, which can avoid lock tank After the cradle is installed in the wellbore after leaving the factory, there is a failure to ensure the safe operation of the wellbore. By controlling the expansion and contraction of the piston rod of the first servo cylinder and the change in thrust, the actual working condition of the change in the elasticity of the hoisting wire rope after the cage is out of the large part can be effectively detected. Can the lock cradle slowly and stably release the elastic force generated by the steel wire rope after the large piece is dropped; apply pressure to the claw through the second servo cylinder to truly simulate the support on the claw of the lock cradle when the cage enters the large piece It can realize the test of the tank support force and stability of the lock tank cradle, and can effectively solve the problem that the lock tank cradle cannot truly simulate the working conditions in the wellbore before leaving the factory, and the use of the lock tank cradle under heavy load conditions The reliability problem cannot be guaranteed

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