Torque-limiting type speed reducer

Abstract

The invention discloses a torque-limiting type speed reducer which comprises a box body, a transmission component and an output component, wherein one end of the transmission component is connected with the output end of a motor; the other end of the transmission component is connected with a sun wheel; a friction torque-limiting mechanism is positioned between a first support seat and a second support seat and is propped against the outer side of the first support seat and the inner wall of the second support seat; the friction force between the friction torque-limiting mechanism and each ofthe first support seat and the second support seat is adjustable; and the sun wheel, a planet carrier and an inner gear ring constitute a planetary gear train. When the first support seat and the second support seat are fixed relatively, the sun wheel drives the planet carrier to rotate, and torque is outputted through a spline housing; and when the first support seat and the second support seat slip, the planet carrier stops rotation, and the sun wheel drives the inner gear ring and the second support seat to rotate. The torque-limiting type speed reducer can realize the slip torque-limitingfunction in the case of a jam and other failures to play a protection role. After trouble removal, a working device can be rapidly put on production without manual recovery to improve the economic benefit.

Description

technical field [0001] The invention relates to the technical field of coal mine transportation, in particular to a torque-limiting reducer. Background technique [0002] The scraper conveyor is the main equipment of the fully mechanized coal mining face. It pulls the scraper chain through the sprocket assembly located at the head and tail of the machine, and transports coal and materials in the trough. At present, the scraper conveyor is constantly developing in the direction of high power and long distance. During the operation of the scraper conveyor, due to the polygonal effect of the chain drive and the coal blocks falling on the ring chain one after another, the ring chain will generate dynamic load or Not to mention, when the output end is stuck, the traditional reducer usually burns out the motor, or directly causes the teeth of the reducer to break, resulting in the shutdown of the working face, which in turn leads to economic losses in the coal mine. [0003] In t...

AI Technical Summary

Problems solved by technology

At present, the scraper conveyor is constantly developing in the direction of high power and long distance. During the operation of the scraper conveyor, due to the polygonal effect of the chain drive and the coal blocks falling on the ring chain one after another, the ring chain will generate dynamic load or Don’t get stuck, when the output end is stuck, the traditional reducer usually burns out the motor, or directly causes the teeth of the reducer to break, resulting in the shutdown of the working face, which in turn leads to economic losses in the coal mine

[0003] In the prior art, the torque limiter is generally installed on the input shaft for torque limit protection, the protection effect is poor, and the reducer and chain cannot be effectively protected

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