Height-adjusting device and large-mining-height coal mining machine

A technology of height adjustment device and large mining height, which is applied in driving devices, cutting machinery, earthwork drilling and mining, etc., can solve problems such as damage to the height adjustment cylinder, coal blocks easily hitting the piston rod, and coal block impact force.

Inactive Publication Date: 2019-06-18
SANY HEAVY EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When mining coal with a large mining height shearer, the working position of cutting coal is relatively high, and the impact force of fallin

Method used

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  • Height-adjusting device and large-mining-height coal mining machine
  • Height-adjusting device and large-mining-height coal mining machine

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Embodiment Construction

[0030] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0031] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways than described here. Therefore, the protection scope of the present invention is not limited by the specific implementation disclosed below. Example limitations.

[0032] The embodiment of the first aspect of the present invention provides a height adjustment device, which is used for large mining height coal mining machines, such as figure 1 and figure 2 As shown, a...

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Abstract

The invention provides a height-adjusting device and a large-mining-height coal mining machine. The large-mining-height coal mining machine comprises a machine body and a cutting rocker arm, wherein the cutting rocker arm is hinged to the machine body. The height-adjusting device comprises a height-adjusting oil cylinder, a connecting rod and an oil cylinder frame, wherein the oil cylinder frame is fixedly installed on the machine body, an installation cavity is formed in the oil cylinder frame or between the oil cylinder frame and the machine body, the height-adjusting oil cylinder is installed in the installation cavity, one end of the connecting rod is hinged to the cutting rocker arm, the other end of the connecting rod extends into the installation cavity and is hinged to a piston rodof the height-adjusting oil cylinder, so that the height-adjusting oil cylinder drives the cutting rocker arm to rotate relative to the machine body through the connecting rod, and the piston rod isalways located in the installation cavity. According to the technical scheme of the height-adjusting device and the large-mining-height coal mining machine, the piston rod of the height-adjusting oilcylinder is connected with the cutting rocker arm through the connecting rod, the piston rod expands and retracts to push the connecting rod to move, the cutting rocker arm is driven by the connectingrod to rotate relative to the machine body, so that the height adjustment of the rocker arm is achieved, the oil cylinder frame covers the height-adjusting oil cylinder, under the protection of the oil cylinder frame, cut and fallen coal can be prevented from hitting the piston rod, and thus the oil cylinder is prevented from being damaged.

Description

technical field [0001] The invention relates to the field of mechanical equipment, more specifically, to a height adjustment device, and a large mining height shearer with the above height adjustment device. Background technique [0002] The existing large mining height shearer adopts a rocker arm structure to adjust the height of the cutting drum. The cutting drum is installed at one end of the rocker arm, the other end of the rocker arm is hinged with the fuselage, and the cylinder body of the height adjustment cylinder is hinged on the fuselage. , the piston rod of the height adjustment cylinder is hinged on the rocker arm, and the height adjustment of the rocker arm is realized by the expansion and contraction of the piston rod of the height adjustment oil cylinder. When the large mining height shearer is mining coal, the working position of cutting coal is relatively high, and the impact force of falling coal blocks is relatively large. The cut coal blocks are easy to h...

Claims

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Application Information

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IPC IPC(8): E21C31/08E21C25/06
Inventor 柯昌青赵庆禹毕博罗浮弗朗茨
Owner SANY HEAVY EQUIP
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