Roller type bidirectional non-returning device

Abstract

The invention provides a roller type bidirectional non-returning device. The bidirectional non-returning device is characterized in that a roller is pushed through pulling a separation claw to compress a compression spring and a locking state is removed; then a non-returning device shaft is pulled to drive a claw wheel of the non-returning device and a non-returning gear to rotate, so that a torque is transmitted through a driven gear; when the separation claw stops pulling, the non-returning gear and a rack are engaged and the transmission is stopped; under the action of the compression spring, each non-returning device roller moves to an original position and bidirectional self-locking is realized, so that a condition that the roller is staggered from a non-returning device combining part due to self gravity, matter gravity or a horizontal large torque is prevented; the bidirectional non-returning device has the advantages of high positioning precision, large bearing torque, good adaptability, safety and reliability, ingeniousness and convenience and easiness for detachment.

Description

technical field [0001] The invention relates to a roller-type two-way backstop, in particular to a roller-type two-way self-locking device for realizing high-torque two-way self-locking, which can prevent misalignment of joint parts with the backstop due to self-weight, object weight or large horizontal torque. Background technique [0002] Due to coal mining, there are many goaf subsidence areas in Shanxi Province. In the actual working conditions of the goaf subsidence areas, the manual temporary manual assembly of the upper and lower columns takes a long time and is inefficient. The emergency treatment of the goaf subsidence areas cannot be carried out in time. The vertical support columns Due to the heavy weight of the natural gas pipeline, it is easy to be tilted and misaligned, which will cause personal injury or death of construction personnel in severe cases. [0003] For example, the publication number is: CN106286636A, the invention name is "a roller type bidirecti...

AI Technical Summary

Problems solved by technology

[0002] Due to coal mining, there are many goaf subsidence areas in Shanxi Province. In the actual working conditions of the goaf subsidence areas, the manual temporary manual assembly of the upper and lower columns takes a long time and is inefficient. The emergency treatment of the goaf subsidence areas cannot be carried out in time. The vertical support columns Due to the heavy weight of the natural gas pipeline, it is easy to incline and dislocate, which will cause personal injury and death of construction personnel in severe cases

[0003] For example, the publication number is: CN106286636A, the invention name is "a roller type bidirectional backstop for electric switch machines", which is composed of 17 parts such as claws and star wheels, and its self-locking effect only occurs in the motor. When the rotation is stopped, real-time self-locking cannot be realized; for example, the "two-way backstop" disclosed by the publication number: CN107917154A, this invention can satisfy high-speed rotation, and the structure is very complicated, which can only be used to realize the backstop function under high-speed conditions. Failed to realize variable speed self-locking; as the public number is: CN201031881 disclosed "two-way backstop" adopts a beam block structure, the backstop torque is small, the positioning accuracy is poor, and the service life is short; another example is the public number: CN204661221U public The "electric traction rope two-way backstop" relies on the electromagnet to control the lock when it is energized and de-energized. The safety life is short, and it can only achieve unilateral locking, which has great limitations.

[0004] In addition, most of the existing backstops are belt-type backstops, and there are many problems in the work. For example, the conventional backstop can only guarantee the backstop in one direction, and it will loosen immediately once the torque is reversed. The backstop cannot be positioned at any time, so there are still many inconveniences during construction

[0005] None of the above four types of bidirectional backstops can solve the settlement problem of natural gas pipelines. Therefore, under the premise of realizing bidirectional self-locking, design a kind of backstop that can prevent clockwise or counterclockwise misalignment under high torque, and can locate any work needs. The location of the roller type bi-directional backstop is very timely and urgently needed

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