Power connection structure of swing arm of thin seam mining machine

Abstract

The invention relates to a power connection structure of a swing arm of a thin seam mining machine, which comprises a cutting motor, a swing arm shell and a main body shell, the swing arm shell and the main body shell are hinged by taking the cutting motor as a pin shaft, the cutting motor is fixed relative to the main body shell, a cutting transmission mechanism is arranged in the swing arm shell, and the cutting transmission mechanism is connected with the swing arm shell. An input end gear of the cutting transmission mechanism is in coaxial transmission connection with an output shaft of the cutting motor through the clutch mechanism, and when the clutch mechanism is in a transmission position, a front external spline on a mandrel of the clutch mechanism is in spline connection with a motor spline hole in the output shaft of the cutting motor. A rear outer spline on the mandrel and an inner spline of a gear spline sleeve form spline connection, and the gear spline sleeve is installed in a gear spline hole in the core portion of the input end gear. A large mining range can be provided, a machine body is shortened, and the gravity center of the coal mining machine is improved.

Description

technical field [0001] The invention relates to a mechanical connection structure for inputting the power of a cutting motor into a swing arm of a coal shearer, which is used in the occasion where the cutting motor and the swing arm are in relative rotation. Background technique [0002] On the existing thin coal seam shearer, the cutting motor is usually located on the rocker arm and swings with the swing of the rocker arm. When the rear rocker arm of the thin coal seam suspension body shearer picks the upper knife, there will be a problem that the mining height of the rear drum is too small. The reason is that when the mining height increases, the cutting motor of the rear rocker arm will It will interfere with the upper coal platform left behind the bottom cutting knife of the front drum, so the overall mining height of this kind of shearer is too narrow, and cannot adapt to the mining requirements of large changes in seam thickness in thin coal seam working faces in my co...

AI Technical Summary

Problems solved by technology

When the rear rocker arm of the thin coal seam suspension body shearer picks the upper knife, there will be a problem that the mining height of the rear drum is too small. The reason is that when the mining height increases, the cutting motor of the rear rocker arm will It will interfere with the upper coal platform left behind the bottom cutting knife of the front drum, so the overall mining height of this kind of shearer is too narrow to meet the mining requirements of my country's thin coal seam working face with large changes in seam thickness

[0003] In response to the above problems, the industry once proposed to divide the cutting part into a swing part and a fixed part, and set the cutting motor and the main body of the cutting transmission system in the fixed part, resulting in the structure of the fixed part being too complicated, and the left and right lengths of the overhanging section of the fuselage are skewed. Long and heavy, the problem of the center of gravity of the whole machine still has a great influence on the force of the whole machine

In addition, the shearer with a long body structure cannot perform the straight-feeding knife process similar to the short-wall shearer, and the oblique cutting at both ends takes a long time, which limits the mining efficiency to a certain extent.

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