Worm wheel type ratchet wheel type hoisting mechanism

Abstract

The invention discloses a worm wheel type ratchet wheel type hoisting mechanism. The worm wheel type ratchet wheel type hoisting mechanism comprises a motor, a winding drum and a pawl type worm wheeland worm one-way force transmission speed reducing mechanism, the motor comprises an ascending motor and a descending motor, and the pawl type worm wheel and worm one-way force transmission speed reducing mechanism comprises an output shaft, a centering disc, a ratchet wheel, a worm wheel, a pawl and a worm, wherein the ratchet wheel is fixed on the output shaft and rotates along with the output shaft, the centering disc and the worm wheel are sleeved on the output shaft through bearings and do not rotate along with the output shaft, the centering disc is located on the left side of the ratchet wheel, the worm wheel is located on the right side of the ratchet wheel, one end of the connecting shaft is fixed on the centering disc, the other end of the connecting shaft is fixed to the worm wheel, the pawl is arranged on the connecting shaft, one end of the spring is fixed to the centering disc, the other end of the spring is fixed in the middle of the pawl, the worm wheel is meshed with the worm, the ascending motor is connected with the left end of the winding drum, the right end of the winding drum is connected with the output shaft, and the descending motor is connected with the worm. The worm wheel type ratchet wheel type hoisting mechanism has an automatic locking function, and the ascending motor and the descending motor only need to rotate unidirectionally, so that the failure rate is low.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a worm wheel type ratchet type hoisting mechanism. Background technique [0002] The hoist is a mechanism that uses a motor to drive the reel to rotate, and lifts or pulls heavy objects through the wire rope or chain wound on the reel. Existing hoisting mechanism is all a motor connection reel, realizes the rise and fall of the heavy object that steel wire connects on the reel by the forward rotation and reverse rotation of motor. The motor of this mechanism needs to rotate both forward and reverse, the control is cumbersome, and it is prone to failure. In addition, when the motor stops rotating after the heavy object rises, it is easy to slide down due to the gravity of the heavy object itself, posing a safety hazard. Contents of the invention [0003] The invention provides a worm wheel type ratchet type hoisting mechanism. [0004] The purpose of the present invention is to solve...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing hoisting mechanism requires both forward and reverse rotation, cumbersome control, and is prone to failure. When the motor stops rotating after the heavy object rises, it is easy to slide due to the gravity of the heavy object itself, posing a safety hazard. The problem

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