Torque-limited speed reducer

Abstract

The invention provides a torque-limited speed reducer. The torque-limited speed reducer comprises a box body, a shaft assembly which is at least partially located in the box body, and a torque-limiteddevice which is located outside the box body. The shaft assembly comprises a shaft rod and a shaft sleeve with which the shaft rod is sleeved. One end of the shaft rod and one end of the shaft sleeveextend out of the box body to be connected with a first portion and a second portion of the torque-limited device correspondingly. When the relative torque, between the shaft rod and the shaft sleeve, of the first portion and the second portion of the torque-limited device is smaller than or equal to the maximum set torque, the shaft rod and the shaft sleeve are enabled to rotate synchronously, and when the relative torque between the shaft rod and the shaft sleeve is larger than the maximum set torque, slipping occurs between the shaft rod and the shaft sleeve. A driving side transmission wheel is disposed on the periphery of the shaft sleeve, and the portion, which is exposed out of the end, far away from the torque-limited device, of the shaft sleeve, of the shaft rod is provided witha driven side transmission wheel. The motive power action of the motive power input end is applied to the driving side transmission wheel, and the driven side transmission wheel exerts the motive power action on the motive power output end. The torque-limited speed reducer is compact and simple in structure, easy to operate, safe and reliable during operation, and good in torque-limited function.

Description

technical field [0001] The invention relates to the technical field of underground coal mines, mines and other heavy matching reducer equipment, in particular to a torque-limiting reducer. Background technique [0002] Coal mining and transportation in the fully mechanized mining face of the coal mine mostly use conveyors such as loaders and scraper conveyors. [0003] figure 1 A structural schematic diagram of an existing reducer is provided as an example. like figure 1 As shown, this existing speed reducer includes a casing 11 and a shaft assembly 12, a second shaft assembly 13, a three-shaft assembly 14, and a sun gear 15 at least partially located in the casing 11, and the power of the motor at the power input end passes through The first shaft assembly 12, the second shaft assembly 13, the three shaft assembly 14 and the sun gear 15 are transmitted to the power output end step by step. The shaft of the triaxial assembly 14 and the shaft of the sun gear 15 are spaced...

AI Technical Summary

Problems solved by technology

The inside of the traditional reducer is hard-connected. When a special situation occurs and the output end is stuck, the motor will usually be burned out, or the gear of the reducer will be broken directly, resulting in the shutdown of the working face.

[0004] The Controlled Start Transmission (CST) reducer has the function of torque limiting protection, but it is bulky, and its torque limiting device is located inside the reducer, which involves more complicated structural forms such as cooling and sealing, and its price is much higher than that of the same type of reducer. Maintenance and repair are quite complicated, and the maintenance cycle is long

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