Two-speed single-output reduction box, winding engine using the same and crane using the same

Abstract

The invention relates to the field of reduction boxes, in particular to a two-speed single-output reduction box, a winding engine using the same and a crane using the same. The reduction box comprises an input shaft, an output shaft and a reducing mechanism. The reducing mechanism comprises two planetary gear trains. Each planetary gear train comprises a planetary gear and two sun gears, wherein the two sun gears are oppositely arranged, the sun gears and the planetary gear are bevel gears, and besides, the planetary gear is meshed with the two sun gears at the same time. Planet carriers are installed on a shell in a rotating mode. One of the two sun gears of the input end gear train is matched with the input shaft in a stopping screwed mode, and the other sun gear is installed on the shell through a high-speed brake shaft. One sun gear of the middle gear train is installed on the shell in a rotating mode through a low-speed brake shaft, and the other sun gear is installed on the shell through a speed reduction shaft. The high-speed brake shaft is in transmission connection with the planet carrier of the middle gear train, the low-speed brake shaft is in transmission connection with the planet carrier of the input end gear train, and the speed reduction shaft is in transmission connection with the output shaft. According to the two-speed single-output reduction box, adjustment of the output speed of the single-output reduction box is achieved.

Description

Technical field [0001] The invention relates to the field of reducers, in particular to a double-speed single-output reducer and a hoist and crane using the reducer. Background technique [0002] With the rapid development of industrial automation, cranes have been widely used in mines, factories, logistics ports and construction fields. The most common cranes are gantry type, bridge type, cantilever type, mobile type, etc. Although they belong to different types and are used in different occasions, they have a common feature-they all have lifting mechanisms. As one of the core components of the crane, the hoisting mechanism has been relatively mature so far. The current hoisting mechanism includes a hoist, which includes a motor, a reducer, and a drum connected by the reducer and the motor. During the working process, The lifting and lowering movements of the crane are controlled by the forward and reverse rotation of the motor. In order to improve the work efficiency as much a...

AI Technical Summary

Problems solved by technology

As one of the core components of the crane, the hoisting mechanism has been relatively mature so far. The current hoisting mechanism includes a hoist, and the hoist includes a motor, a reducer, and a reel connected to the motor through the reducer. During the work, The hoisting and lowering actions of the crane are controlled by the positive and negative rotation of the motor. In order to improve the work efficiency as much as possible, the hoisting and lowering speeds of the crane are different in the state of no load and load. In view of the current single output deceleration The transmission ratio of the crane is a fixed value, and the adjustment of the hoisting and lowering speed of the crane is mainly adjusted by electricity, that is, by controlling the speed of the motor. However, the range of electrical adjustment is limited after all, and it is not yet possible Very satisfied, especially in large-tonnage cranes, it often takes a long time to raise or lower an empty hook, and the motor power of large-tonnage cranes is often very large, and the extension of the running time of the empty hook will inevitably bring huge Waste of energy, but also directly reduce the working efficiency of the crane

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