Efficient forced lubrication system with circulating lubrication function for coal mining machine

Abstract

The invention relates to an efficient forced lubrication system with a circulating lubrication function for a coal mining machine. The efficient forced lubrication system comprises a high speed end lubrication pump, a low speed end lubrication pump and a lubrication oil passage, wherein the high speed end lubrication pump and the low speed end lubrication pump are arranged in a transmission case of a rocker arm; the lubrication oil passage is arranged in a transmission case housing of the rocker arm and comprises a main oil passage and multiple groups of branched oil passages; the main oil passage is communicated with the high speed end lubrication pump, the low speed end lubrication pump and lubricating points of all shaft assemblies of a diving system of the rocker arm, and is also communicated with oil discharge outlets of the high speed end lubrication pump and the low speed end lubrication pump. In the efficient forced lubrication system disclosed by the invention, one of the high speed end lubrication pump and the low speed end lubrication pump is always at low position at each time and can supply oil to the main oil channel, so that the main oil passage is always filled with oil; the oil is supplied to the high speed end lubrication pump, the low speed end lubrication pump and the lubricating points of all the shaft assemblies of the diving system of the rocker arm in real time through all the branched oil passages; even if the coal mining machine works on the work face with a large dip angle, all parts of the driving system of the rocker arm do not lack oil; the efficient forced lubrication system has high applicability.

Description

technical field [0001] The invention relates to a high-efficiency forced lubrication system of a coal mining machine, which is mainly used on the rocker arm parts of the coal mining machine to realize the high-efficiency lubrication of the shaft group bearings of the rocker arm transmission system. equipment technology field. Background technique [0002] At present, most of the rocker arms of coal shearers are equipped with forced lubrication systems. One typical structure is to install a lubricating pump at the high-speed end of the rocker arm, and pump the lubricating oil to the low-speed end through the lubricating pump. On the working surface, the bearing at the high-speed end of the lower rocker arm is short of oil; in addition, this structure generally only has one lubricating oil passage hole, which only leads to the end of the eight-axis assembly of the rocker arm, so it can only be The lubricating oil is introduced to the vicinity of the eight-axis assembly, and s...

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Problems solved by technology

[0002] At present, most of the rocker arms of coal shearers are equipped with forced lubrication systems. One typical structure is to install a lubricating pump at the high-speed end of the rocker arm, and pump the lubricating oil to the low-speed end through the lubricating pump. On the working surface, the bearing at the high-speed end of the lower rocker arm is short of oil; in addition, this structure generally only has one lubricating oil passage hole, which only leads to the end of the eight-axis assembly of the rocker arm, so it can only be The lubricating oil is introduced to the vicinity of the eight-axis assembly, and still cannot directly lubricate the low-speed end bearings, so the lubrication efficiency is low

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