Winding engine

Abstract

The invention relates to a winding engine, comprising a shell, a motor, a worm, a worm gear, a rope, a transmission shaft and a stop block, wherein the worm is driven to rotate by the motor, the worm gear is meshed with the worm, the rope is sleeved on the worm gear, and the transmission shaft and the stop block are fixedly arranged together with the boss rod of the motor. The stop block comprises a slider which can be driven by the worm to slide on the shell and a limit switch which is arranged on the shell, wherein the slider is provided with two working positions, when the slider is at the first working position, the winding engine is ascended and descended normally, the slider is separated from the limit switch, and the motor works normally; when the slider is at the second working position, the winding engine is ascended to the highest point or descended to the lowest point, the slider is contacted with the limit switch, the motor is shut down, and the winding engine stops working. According the winding engine disclosed by the invention, the mechanical limit way is direct, and problems probably occurring at each controlling link are avoided.

Description

technical field [0001] The invention relates to a winch, in particular to a winch with a limit function. Background technique [0002] At present, the hoist used on the crane and the lifting device mostly adopts the installation of some electrical components, and realizes the hoist limit through complicated circuit control. For example, the Chinese utility model patent with the publication number CN201647894U includes an insulating fixing plate, which is fixed on the reel of the winch, and the insulating fixing plate is provided with a sensor switch SP1 and a sensor switch SP2, and the sensor switch SP1 and the sensor switch SP2 are respectively set. On both sides of the wire rope of the winch, and corresponding to the wire rope, the induction switch SP1 and the induction switch SP2 are respectively connected to the limit circuit through the power line, and use the joint action of the sensor and the limit circuit to play the role of limit. But for the winch of this design, ...

AI Technical Summary

Problems solved by technology

However, for this design of the hoist, once a certain electronic component has a problem or a certain control circuit has a problem, it will affect the operation of the entire hoist and cannot play the role of limit

In addition, compared with some simple mechanical devices, the installation of electrical components has a relatively high production cost.

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