High-power thin coal seam coal mining machine rocker arm with front-mounted planetary reducer

Abstract

The invention relates to a high-power thin coal seam coal mining machine rocker arm with a front-mounted planetary reducer. The high-power thin coal seam coal mining machine rocker arm comprises a rocker arm shell, a cutting motor, a first-stage straight tooth transmission system, a planetary reduction mechanism, a second-stage straight tooth transmission system and a long output shaft, wherein the cutting motor, the first-stage straight tooth transmission system, the planetary reduction mechanism, the second-stage straight tooth transmission system and the long output shaft are installed in the rocker arm shell and are in transmission connection in sequence; a high-speed end installation part and a low-speed end installation part of the rocker arm shell extend front and back and are opposite in a left-right spaced mode, so that the rocker arm shell is in a U shape; the axis of the cutting motor and the axis of the planetary reduction mechanism extend front and back and are installed in two adjacent cavities spaced by one wall in the high-speed end installation part side by side in a left-right mode; the first-stage straight tooth transmission system is arranged in front of the cutting motor and the planetary reduction mechanism; the second-stage straight tooth transmission system is located behind the planetary reduction mechanism and arranged in an inner cavity in the U-shaped bottom of the rocker arm shell; and the long output shaft extends front and back and is installed in an inner cavity of the low-speed end installation part. The high-power thin coal seam coal mining machine rocker arm can be matched with a small-diameter roller, can provide large cutting force and has a good coal loading effect.

Description

technical field [0001] The invention relates to a rocker arm suitable for a thin coal seam shearer, belonging to the technical field of coal mining equipment. Background technique [0002] With the continuous increase of the cutting power of the thin coal seam shearer, the outer diameter of the corresponding rocker arm planetary mechanism is also continuously increased. Taking the rocker arm of a high-power thin coal seam shearer with a cutting power of 350kW as an example, in order to ensure the reliability of the output of the planetary mechanism, the outer diameter of the planetary mechanism should generally reach 600mm. Although the reliability of the rocker arm structure designed in this way meets the requirements of use, the minimum diameter of the supporting drum must be more than 1050mm, and the blade height is not large, which leads to two problems in configuring this type of rocker arm of the coal mining machine: (1) it cannot Satisfy the demand for small mining h...

AI Technical Summary

Problems solved by technology

Although the reliability of the rocker arm structure designed in this way meets the requirements of use, the minimum diameter of the supporting drum must be more than 1050mm, and the blade height is not large, which leads to two problems in configuring this type of rocker arm of the coal mining machine: (1) it cannot Meet the demand for small mining height below 1m; (2) The drum blades are too small, and the coal loading effect is poor

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