Combined guided slipping type forepoling hydraulic support

Abstract

The present invention provides a combined guide slippage type forepoling hydraulic bracket which comprises an internal support unit and an external support unit (12 and 11) which are symmetrical to each other at left and right. Each support unit comprises a top beam (1), a pedestal, a guide stabilizing mechanism and a hydraulic support component upright post. An upright post is articulated between the top beam and the pedestal. A telescopic link type guide stabilizing mechanism is arranged at the middle parts of the top beam and the pedestal. The outer side of the internal support unit is provided with the external support unit. Connecting slide rods (7) are respectively connected between the top beams and the pedestal beams at the same side of the adjacent internal and external support units. An inter-frame jack (8) is articulated between the top beam and the pedestal of the symmetrical internal support unit to form a section of bracket. The bracket forms an independent motor unit. The hydraulic bracket consists of a plurality of independent motor units. An advancing jack (17) is connected between the pedestals (9) of the independent motor units. The front end of the pedestal (9)of a section of bracket at the front end of the hydraulic bracket is connected with a head frame pulling and moving mechanism. The hydraulic bracket can effectively support a big section laneway and realizes the forepoling and the forepoling automatization of the big section laneway.

Description

technical field [0001] The invention relates to a support device for advance support along the channel of a large-section working face in underground mining of coal mines, and is a self-propelled combined guide sliding type advance support hydraulic support suitable for transportation lanes and air return lanes. Background technique [0002] my country is one of the countries with the largest coal seam reserves in the world. The number of fully mechanized mining faces is increasing, especially the large mining high-yield and high-efficiency working faces are increasing day by day. It cannot adapt to the serious defects of large sections. For example, the existing advanced support brackets all need to be provided with anchorage points, and it is difficult to set anchor points, especially in large-section roadways; Pushing the moving frame structure, pushing the moving frame can cause movement deflection and difficulty in moving the frame. Therefore, the existing advance suppor...

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Problems solved by technology

[0002] my country is one of the countries with the largest coal seam reserves in the world. The number of fully mechanized mining faces is increasing, especially the large mining high-yield and high-efficiency working faces are increasing day by day. It cannot adapt to the serious defects of large sections. For example, the existing advanced support brackets all need to be provided with anchorage points, and it is difficult to set anchor points, especially in large-section roadways; Pushing the moving frame structure, pushing the moving frame can cause moving deflection and difficulty in moving the frame

Therefore, the existing advance support hydraulic support is not widely used, especially the manual control, which affects the coal mining efficiency to a certain extent; with the development of domestic coal mine mechanized mining and changes in geological conditions, the existing advance support The performance of the hydraulic support can no longer fully meet the requirements of mechanized mining in efficient working faces, especially there is no suitable advanced support for large-section roadways. The combination guide sliding type advanced support hydraulic support of the roadway has become the urgently needed advanced support equipment for high-yield and efficient coal mining face

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