Comprehensive mechanized coal mining surface ended bracket pushing device

Abstract

The invention discloses a comprehensive mechanized coal mining surface ended bracket pushing device, and relates to the technical field of mining equipment. The device includes a front bracket, a rearbracket, a pushing jack, a shoving rod, a pushing rod and a scraper conveyor head base; the front bracket and the rear bracket both belong to a four-connecting-rod supporting-type hydraulic bracket,a four-connecting-rod mechanism of the front bracket is installed between columns of the front bracket, a four-connecting-rod mechanism of the rear bracket is installed on the rear portion of the rearbracket, the pushing jack is arranged on a rear bracket base, the pushing rod is connected with the middle portion of the rear bracket base and the pushing jack separately, and the pushing rod is connected between the scraper conveyor head base and the rear bracket base. According to the comprehensive mechanized coal mining surface ended bracket pushing device, the normal advance speed is ensured, the labor intensity is reduced, safe wiring harnesses are increased, and great safety benefits are embodied.

Description

technical field [0001] The invention relates to the technical field of mining equipment, in particular to a support pushing device for an end of a fully mechanized mining face. Background technique [0002] With the gradual increase of the mining depth and the change of geological conditions, the fully-mechanized mining face will cause serious deformation of the transport roadway, especially in the advance support area, making it difficult to advance smoothly during the process of pushing the scraper conveyor, which will affect the elevated fully-mechanized mining work advance quickly. In the current existing technology, when the pushing rod of the terminal bracket pushes the head of the scraper conveyor forward, when the initial support of the column of the bracket reaches the specified value, the bottom angle of the terminal bracket is automatically lowered or even lowered due to the softness of the tunnel floor. It will press the push rod, which will affect the expansion...

AI Technical Summary

Problems solved by technology

[0002] With the gradual increase of the mining depth and the change of geological conditions, the fully-mechanized mining face will cause serious deformation of the transport roadway, especially in the advance support area, making it difficult to advance smoothly during the process of pushing the scraper conveyor, which will affect the elevated fully-mechanized mining work fast forward

In the current existing technology, when the pushing rod of the terminal bracket pushes the head of the scraper conveyor forward, when the initial support of the column of the bracket reaches the specified value, the bottom angle of the terminal bracket is automatically lowered or even lowered due to the softness of the tunnel floor. It will press the push rod, which will affect the expansion and contraction of the push rod. In severe cases, the bracket will move backward. Sometimes, because the width of the roadway does not meet the specified requirements, the front corner of the shovel plate of the head base of the scraper conveyor will be inserted into the two coal arms. And in the roadway floor, it also affects the smooth advancement of the machine head

The application number is CN201220264656.0, and the invention describes a fully mechanized mining face end support. Although it has a reasonable structure, high supporting force, and provides a large working space, its cost is relatively high, and it cannot guarantee normal propulsion speed and reduce labor. Strength, safety harness is not enough

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