Large mining height triangular hydraulic support

Abstract

The invention provides a large mining height triangular hydraulic support. A first box template and a second box template are in sliding connection. The first box template is connected with the second box template through a stretchable jack. One end of the first box template is hinged to one end of a base plate beam, the base plate beam is hinged to one end of a stand column, the other end of the stand column is hinged to the second box template, the base plate beam is assembled and connected to one end of an advancing jack, one end of the second box template is hinged to one end of a rotating joist, the other end of the rotating joist is hinged to one end of an upper face guard, the other end of the upper face guard is hinged to one end of a lower face guard, the lower face guard is assembled and connected to one end of a face attaching jack, the second box template is hinged to the lower face guard through a long face guard jack, the second box template is hinged to the upper face guard through a short face guard jack, and the second box template is hinged to the rotating joist through a joist jack. The large mining height triangular hydraulic support has the advantages of being simple in structure, stable, reliable, capable of decreasing the roof control area, and capable of achieving light-weighting of the support and whole-sealed supporting of the working space.

Description

technical field [0001] The invention relates to the technical field of mining machinery, in particular to a triangular hydraulic support with a large mining height. Background technique [0002] At present, the hydraulic support used in the fully mechanized mining face of coal mines in my country has been using the structural form of foreign products introduced in the 1980s, that is, the "four-dimensional structure" composed of top beams, shield beams, bases, columns and rod stabilization mechanisms. The connecting rod structure support" maintains the working space, supports the upper roof load of "controlling the roof distance", and controls its bending and sinking. The greater the "controlling distance" and the mining height, the greater the requirements for the structural strength and support strength of the bracket. With the development of full-high technology in one-time mining of thick coal seams in my country in recent years, in order to meet the structural strength a...

AI Technical Summary

Problems solved by technology

With the development of full-high technology in one-time mining of thick coal seams in my country in recent years, in order to meet the structural strength and support strength of the support, the weight of a single frame of the "four-link structure support" has reached tens of tons, or even hundreds of tons. The cost of the frame is tens to millions of yuan, which not only results in higher and higher investment in support equipment, but also makes it more difficult to transport, install, and maintain the frame

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