Gravity control based forced lubrication system of coal cutter

Abstract

The invention belongs to the technical field of gear lubrication of a rocker reducer in a coal cutter and particularly relates to a gravity control based forced lubrication system of the coal cutter. The forced lubrication system comprises a rocker planet head side oil pool, a reversing switch component, a motor pump and a rocker motor side oil pool. The reversing switch component comprises two ball valves, a hand shank and a heavy punch, rotating shafts of valve plates of the valve balls are both connected to the hand shank, and the handle shank is connected with the heavy punch; an upper oil suction and an upper oil inlet are arranged at positions of the rocker planet head side oil pool, a lower oil suction and a lower oil inlet are arranged at positions of the rocker motor side oil pool, the upper oil suction and the lower oil suction are respectively connected with oil suctions of the ball valves, oil outlets of the ball valves are connected with an oil inlet of the motor pump, and an oil outlet of the motor pump is connected with the upper oil inlet and the lower oil inlet. By the application of changes in position and gravity when the reversing switch component swings with the coal cutter, oil circuits can switch automatically, forced lubrication is realized, and lubrication capacity is improved.

Description

technical field [0001] The invention belongs to the technical field of gear lubrication of a rocker reduction box in a coal shearer, and in particular relates to a forced lubrication system of a coal shearer based on gravity control. Background technique [0002] When the cutting system of the shearer, especially the model with a large mining height, has a large upswing and downswing angle, the gears and bearings of the first and last two-stage straight tooth transmission (high-speed stage, low-speed stage) in the rocker gear reducer will be partially missing. Lubrication, working for a long time and a lot of heat will cause damage to parts. Poor lubrication of the gear system greatly affects the efficiency and life of the shearer. A long-term research has been carried out on this problem, and the existing technical solutions are as follows: [0003] The system installs the lubricating gear pump on the gear output shaft of the reduction box through a spline, and adds a two...

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Problems solved by technology

[0004] The present invention aims to solve the defects of the prior art such as complex system, long oil absorption length, connection with the gear shaft affecting the transmission system, easy damage to the downhole valve group, easy blockage of the pipeline, lack of monitoring, etc., and proposes a coal shearer based on gravity control Forced lubrication system

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