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Supports

A technology for moving frames and top beams, which is applied to mine roof supports, mining equipment, earthwork drilling and mining, etc., and can solve problems such as easy to fall frames and non-parallel top beams

Active Publication Date: 2013-06-26
李薇薇
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  • Abstract
  • Description
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Problems solved by technology

[0004] The purpose of the present invention is to provide a hydraulic support. When the support is used to support the top plate, the front extension beams of the group of supports can be connected together, so as to overcome the problem that each support independently supported by this type of support is easy to fall down. It can adapt to the problem that the top beams are not parallel, and can also overcome the above-mentioned problems of overturning moment and empty roof in front of the beams

Method used

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Embodiment approach

[0014] combine figure 1 , figure 2 , image 3 and Figure 4 , the first embodiment of the present invention, including a top beam 1, a front extension beam 2, a hydraulic prop 8, a right connector 5 located on the right side of the front end of the front extension beam 2, and a left connector 6 located on the left side of the front end of the front extension beam 2 , the moving surface 13 and the inclined plane 3 connected together with the front extension beam 2 . The projection 4 and the positioning surface 12 connected together with the top beam 1 are located in the gap 14 between the projection 4 and the side of the front extension beam 2, connected with the front extension beam 2 by the front pin 7 and connected with the top by the rear pin 10. The propulsion cylinder 9 connected with the beam 1 and the device 11 connected with the rejecting device. The moving surface 13 and the positioning surface 12 constitute an automatic centering device for the top beam; the inc...

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Abstract

The invention discloses supports which are applied to face timbering top plates of underground coal mines. The supports comprise top beams and hydraulic props, wherein the hydraulic props droop downwards. The group of supports comprises forward extending beams which are connected in sequence and synchronously extend out, and thrust cylinders, wherein one ends of the thrust cylinders are connected with the forward extending beams, and the other ends of the thrust cylinders are connected with the top beams. The supports are characterized in that top beam automatic centering devices and top beams nonparallelism suitable devices are arranged in the supports in the support transferring process. Through adoption of the structure, the supports can achieve rapid support transferring and automatic centering, is free from support adjustment, and further capable of achieving support connection, fall prevention and support transferring on the condition that a roof is not empty. The supports are especially suitable for full-seam mining breaking roofs, three-soft coal seam working faces and super-soft top coal caving working faces.

Description

technical field [0001] The invention relates to a support which belongs to a self-moving light hydraulic support used for supporting the roof of an underground coal mining working face. Background technique [0002] Hydraulic support is divided into two categories: fully mechanized mining support and sliding roof beam hydraulic support. Its background technology one is the technology described in the "General Technical Conditions for Sliding Top Beam Hydraulic Support" of China's coal industry, and the existing technology in this field has the suspension top beam hydraulic support (Chinese Patent Publication No.: CN1039638 Publication Day : 1990.2.14); Side-by-side sliding top beam hydraulic support (Chinese patent publication number: CN2096643 publication date: 1992.2.19); 2L type hydraulic support (Chinese patent publication number: CN2674095 publication date: 2005.1.26). Above-mentioned these supports are all made up of hydraulic prop, the forward extension beam, the mov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D23/04E21D23/06
Inventor 李薇薇
Owner 李薇薇
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