Coal mining machine and cutting part thereof

A technology for the cutting part of a coal shearer and a coal shearer, which is applied in the direction of earth drilling, cutting machinery, driving devices, etc., can solve the problems of frequent torque shaft breakage, many overload situations, and inconvenient disassembly of the torque shaft, and achieve saving Effects of material and time costs, reduced operating costs, and reduced downtime maintenance costs

Active Publication Date: 2015-03-25
SANY HEAVY EQUIP
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  • Abstract
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Problems solved by technology

[0004] However, using the torque shaft 8' as the overload protection part of the cutting part of the coal shearer has the following disadvantages: when the underground conditions are bad, there are many overload situations in the process of cutting the coal seam, the fracture of the torque shaft is relatively frequent, and the torque shaft is disassembled. Inconvenient, the operation of replacing the torque shaft takes a long time, and the maintenance time of the shearer is long, which leads to a significant increase in the operating cost of the shearer

Method used

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  • Coal mining machine and cutting part thereof
  • Coal mining machine and cutting part thereof
  • Coal mining machine and cutting part thereof

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Embodiment Construction

[0023] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0024] The shearer cutting part provided by the embodiment of the present invention includes a reduction transmission mechanism and a connecting square head. The reduction transmission mechanism has a power output shaft 1, see figure 2 , shows a part of the reduction transmission mechanism (planetary reducer part) and the cross-sectional structure of the connecting square head 2 in the cutting part of the shearer provided by the embodiment of the present invention. According to the prior art, the cutting part of the shearer may also include a cutting motor and a torque shaft, and the torque shaft may have an overload protection function and a clutch function. The speed reduction transmission ...

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Abstract

The invention provides a coal mining machine and a cutting part thereof. The cutting part of the coal mining machine comprises a speed reduction transmission mechanism and a connection square head, wherein the speed reduction transmission mechanism is provided with a power output shaft; the connection square head is connected with a roller of the coal mining machine; the power output shaft is connected with the connection square head by a torque limiter; overload protection is carried out on the cutting part by the torque limiter so that the breakage possibility of a torque shaft can be reduced and the downtime caused by maintenance of the coal mining machine is shortened; and furthermore, the operation cost of the coal mining machine is reduced.

Description

technical field [0001] The present invention relates to coal mining machinery, more specifically, to a coal mining machine and its cutting part. Background technique [0002] The cutting part of the shearer is the executive part of the coal shearer for loading and dropping coal. figure 1 That is to say, the sectional structure of a typical shearer cutting part in the prior art is shown. As shown in the figure, the cutting part includes: cutting motor 7', torque shaft 8', reduction transmission mechanism and connection Head (also known as planetary square head) 2', the reduction transmission mechanism includes a reduction box 6' and a planetary reducer 5'. The cutting motor 7' is driven and connected with the reduction box 6' through the torque shaft 8', the reduction box 6' transmits the power to the planetary reducer 5', and the central axis 1' of the planetary carrier of the planetary reducer 5' is connected to the square head 2 'Through the spline fit, the connecting sq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C31/02
CPCE21C31/02
Inventor 李庆茹申磊杨瑞锋
Owner SANY HEAVY EQUIP
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