Bidirectional overspeed self-locking traveling block

Abstract

The invention discloses a bidirectional overspeed self-locking traveling block. The bidirectional overspeed self-locking traveling block includes a pulley mechanism, a centrifugal driving mechanism and a ratchet wheel braking mechanism, wherein each of two sides of the pulley in the pulley mechanism is connected with a ratchet wheel; two ratchet wheels are arranged symmetrically, and are coaxial with the pulley; the ratchet wheels are engaged to the respectively corresponding ratchets; and the pulley rotates to drive a guide cylinder in the centrifugal driving mechanism, and when the rotatingspeed exceeds a rated rotating speed, a centrifugal block slides outward along the guide cylinder to engage with an annular gear, so as to drive the annular gear to rotate, and then the annular gear rotates to drive the ratchet wheel braking mechanism to move. The bidirectional overspeed self-locking traveling block can realize that during the forward or reverse operation of the traveling block, arope suddenly breaks or other reasons cause the speed of the traveling block to exceed a certain critical value, and the traveling block can be self-locked, that is, when the traveling block brakes,the rope is locked on the pulley to avoid or reduce property damage or even personal injury.

Description

technical field [0001] The invention relates to a traveling block, in particular to a two-way overspeed self-locking traveling block. Background technique [0002] Swimming blocks are also called "moving pulleys". According to the number of pulleys, blocks can be divided into single-wheel blocks, double-wheel blocks and multi-wheel blocks. The characteristic of the swimming block is to use a single rope to transmit the tension, through one or more traveling pulleys, to achieve the purpose of lifting or moving the load. [0003] Swimming blocks and ropes are widely used in various engineering fields such as lifting, hoisting, and traction. When the ropes wrapped around the swimming blocks suddenly break, or other human misoperations cause the swimming blocks or ropes to change their trajectory suddenly, Can cause serious property damage or personal injury or death. [0004] Chinese patent document "a self-locking pulley" (Patent No. ZL93205105.7) provides a one-way self-loc...

AI Technical Summary

Problems solved by technology

[0003] Swimming blocks and ropes are widely used in various engineering fields such as lifting, hoisting, and traction. When the ropes entangled with the swimming blocks and the force are suddenly broken, or other human misoperations cause the swimming blocks or ropes to change their trajectory suddenly, May cause serious property damage or personal injury

[0004] Chinese patent document "a self-locking pulley" (Patent No. ZL93205105.7) provides a one-way self-locking pulley, but it can only control the pulley from reversing, and the pulley is rarely unidirectional in application. Rotate, and the ratchet and the pawl are always engaged, the pawl wears the rope

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