Forced oil injection lubrication system for open gear of walking box of coal mining machine

Abstract

The invention relates to a forced oil injection lubrication system for an open gear of a walking box of a coal mining machine. The system comprises a cam and a spring-reset single-acting piston cylinder, a spring cavity of the piston cylinder is connected to nozzle devices through an oil drainage pipeline, a spring-free cavity is connected with a lubricating oil source through an oil inlet pipeline, and the two cavities communicates through a bypass pipeline; the cam is coaxially fixed on a driving wheel shaft or a walking wheel shaft of the walking box of the coal mining machine, the piston cylinder is vertically arranged relative to the driving wheel shaft, and the rim of the cam is in contact with an end of a piston rod extending from the spring-free cavity; and the nozzle devices are arranged on a walking box body of the coal mining machine, oil injection ports face the driving wheel and/or the walking wheel, the oil drainage pipeline, and the oil inlet pipeline and the bypass pipeline are respectively provided with an oil drainage one-way valve, an oil inlet one-way valve and a bypass one-way valve. According to the system, the lubrication state of the open gear of the walkingbox can be guaranteed, the noise during running of the walking box is greatly reduced, and the service life of the open gear of the walking box is greatly prolonged.

Description

technical field [0001] The invention relates to a forced oil injection lubrication system, which is especially suitable for the lubrication of the open gear transmission of the traveling box of the roller shearer, and is especially effective in solving problems such as dry friction and abnormal sound caused by no lubrication or poor lubrication effect. significantly. Background technique [0002] The traction part of the drum shearer transmits the output torque of the traction motor to the travel box through gear transmission. The walking box is an open transmission reduction box. Some coal mining machine walking boxes have only one gear of the walking wheel assembly, and some walking boxes have two or more stages of gear transmission. The travel wheel assembly is the last gear train in the travel box drive train, and is the executive mechanism for the shearer tow and travel. The road wheel on the road wheel assembly and the pin rail on the scraper conveyor are meshed in a...

AI Technical Summary

Problems solved by technology

The main problems are: the teeth of each wheel are abnormally worn, and the gears make harsh noises when meshing, especially when the shearer cuts a fault or some hard rock

Such a small-volume fuel tank will generally run out of oil in less than one production shift, and it needs to be refueled many times, which is extremely inconvenient

Second, the size of the oil drip port of this fuel tank is not easy to control. If the oil drip port is opened larger, the oil in the fuel tank will be dripped out quickly. If the oil drip port is opened smaller, the oil drip port will be easily blocked.

Since the oil drip port is directly below the fuel tank, once it is blocked, the entire fuel tank needs to be disassembled for disposal, which is quite inconvenient, and many users prefer to discard it.

Third, there are often situations where the operator feels that it is not easy to use and does not use it

[0005] In response to the above problems, the industry has also continued to improve the control method of the dripping oil flow and speed of the dripping oil dripping port, but the improvement effect is not obvious

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