Suspension machine body coal mining machine

Abstract

The invention relates to a suspension machine body coal mining machine. The suspension machine body coal mining machine comprises a fixed reduction gearbox, a gap bridge structure and an arm frame; the fixed reduction gearbox comprises a fixed reduction gearbox shell, an oil cylinder, a cutting motor and a front-stage cutting transmission mechanism, wherein the oil cylinder, the cutting motor and the front-stage cutting transmission mechanism are located in an inner cavity of the fixed reduction gearbox shell; the fixed reduction gearbox shell and the gap bridge structure are arranged front and back and detachably and fixedly connected; the arm frame comprises an arm frame shell and a rear-stage cutting transmission mechanism; a core part of a front-stage tail gear of the front-stage cutting transmission mechanism and a rear-stage head gear of the rear-stage cutting transmission mechanism form spline connection through a spline shaft; the arm frame shell is hinged to the fixed reduction gearbox shell, and the hinge axis coincides with the center line of spline connection; te two ends of the oil cylinder are hinged to the fixed reduction gearbox shell and the arm frame shell correspondingly; and the oil cylinder is located in front of the front-stage cutting transmission mechanism. The suspension machine body coal mining machine can achieve the purposes of channel loading and underground transportation at the same time, the transmission mechanisms are simple, and the gravity center of the whole coal mining machine can be improved through the overall layout.

Description

technical field [0001] The invention relates to a coal shearer with a suspended body, which is suitable for mining in a wide range of mining heights in thin or extremely thin coal seams. Background technique [0002] In the mining of thin coal seam lower limit or extremely thin coal seam conditions, in order to improve the adaptability of the cutting swing rocker to the coal seam, the cutting transmission system is usually set to consist of two parts: the fixed part of the short structure with power and the swing part of the output power . However, in some designs, due to the consideration of the structure of the loading channel on the side of the drum, a part of the transmission of the fixed part is set above the conveyor trough, which not only affects the coal passing space, but also the front and rear width of the fixed part is too large, and the space for downhole transportation is limited; The rocker arm adopts the structure of a planetary mechanism in the drum with a ...

AI Technical Summary

Problems solved by technology

However, in some designs, due to the consideration of the structure of the loading channel on the side of the drum, a part of the transmission of the fixed part is set above the conveyor trough, which not only affects the coal passing space, but also the front and rear width of the fixed part is too large, and the transportation space of the downhole is limited; The rocker arm adopts the structure of a planetary mechanism in the drum with a conventional structure, so the diameter of the drum cannot be small, making the shearer unsuitable for mining with a lower mining limit

There are also designs where the power and main deceleration parts are set on the side of the coal wall in front of the conveyor trough (that is, between the left and right rollers). Although the mining height can be lower, the transmission is relatively complicated, and the center of gravity of the fixed part and the swing part is relatively biased towards the coal wall. , has a certain adverse effect on the operation of the whole machine, especially under the condition of the down mining face

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