Large-torque output cutting transmission main body part

Abstract

The invention relates to a large-torque output cutting transmission main body part which comprises a fixing reduction gearbox shell, and an oil cylinder, a cutting motor and a preceding-stage cutting transmission mechanism which are arranged in the fixing reduction gearbox shell; the preceding-stage cutting transmission mechanism comprises a first-stage planetary reduction mechanism, a central gear, a left group and a right group of large-reduction-ratio transmission mechanisms; each large-reduction-ratio transmission mechanism comprises a first fixed shaft gear transmission mechanism, a high-speed-stage planetary speed reduction mechanism, and a second fixed shaft gear transmission mechanism which are sequentially connected in a transmission mode and sequentially arranged from back to front; the cutting motor is a four-pole or six-pole motor; an output shaft of the cutting motor is provided with an outer spline; the outer spline is in spline connection with an internal spline at the core part of a sun gear of the first-stage planetary reduction mechanism; and the oil cylinder is positioned in front of the second fixed shaft gear transmission mechanism. The large-torque output cutting transmission main body part has large output torque, so that the loading channel and underground transportation problems can be considered, and the overall layout is beneficial to improvement of the gravity center of a whole coal mining machine.

Description

technical field [0001] The invention relates to a large-torque output cutting transmission main body, which is suitable for coal shearers with high power, short fuselage and wide mining range. 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; Some also set the power and main deceleration part on the side of the coal...

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 space for downhole transportation is limited; Some also set the power and main deceleration part 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. The operation of the whole machine has a certain adverse effect, especially in the condition of the undercut working face.

Even if a relatively simple transmission structure is adopted, the cutting capacity is often not easy to meet the complex conditions of working face mining because it often needs to be equipped with small and medium power multi-pole motors to achieve a low speed within a certain range.

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