Shield support for steep medium-thickness coal seam

A technology for shielding supports and thick coal seams, which is applied to mine roof supports, mining equipment, earth-moving drilling and other directions, can solve the problems of unsuitable coal face support, hidden danger of collapse and unbalance, etc., so as to improve the safety of coal mining. , good stability and security, the effect of improving stability

Active Publication Date: 2014-03-19
重庆天巨承机械制造有限责任公司
View PDF8 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the closed structure of the bracket, it is not suitable for the support of the coal mining face; in addition, even if the bracket is used to form a flexible support system for mining in steeply inclined layers, whether it is a roof support beam, a floor support plate or any One side of the side rail is located on the gob side, and there are cases where the hinged parts of the corresponding components are subjected to unequal extrusion loads of gangue. When this situation occurs, since the adjacent components of the support are only connected by hinges, the There are no other auxiliary supporting components between them. This unbalanced load will cause the corresponding components to rotate and become unstable, and there is a serious risk of collapse.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Shield support for steep medium-thickness coal seam
  • Shield support for steep medium-thickness coal seam
  • Shield support for steep medium-thickness coal seam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1, see figure 1 , figure 2 , image 3 , a shield bracket for steeply inclined medium-thick coal seams, the bracket is provided with a plurality of wire rope chucks 8 for fixing the wire ropes, the bracket includes mutually hinged lower legs and a support beam, and the support beam consists of three sections of beams Hinged into an arched structure, the free end of the support beam is also connected to the upper leg; the lower leg and the upper leg are linear, between the upper leg and the support beam and between the lower leg and the support A first double-acting hydraulic cylinder 5 is movably connected between the guard beams; wherein, the support beam includes a top beam 21, the upper end of the top beam 21 is hinged with an upper support beam 22, and the lower end of the top beam 21 is hinged with a lower shield beam 23; The lower leg includes a lower leg main body 11 and a lower leg telescopic body 12, the upper end of the lower leg main body 11 is hing...

Embodiment 2

[0026] Example 2, see Figure 4 The ends of the piston rods of the two first double-acting hydraulic cylinders 5 are respectively hinged to the upper parts of the upper support beam 22 and the lower shield beam 23 .

[0027] The rest of the structure of this embodiment is the same as that of Embodiment 1, and will not be repeated here.

Embodiment 3

[0028] Example 3, see Figure 5 , the supporting beam consists of the upper supporting auxiliary beam section 24a, the upper supporting main beam section 22a, the top beam section 21a and the lower covering beam section 23a to form a rigid arched structure, and the supporting beam is respectively supported by the upper The free end of the auxiliary beam section 24a and the free end of the lower shield beam section 23a are respectively hinged with the upper leg body 31 and the lower leg body 11; the piston rod ends of the two first double-acting hydraulic cylinders 5 are respectively hinged at both ends of the top beam section 21a. There are two wire rope chucks 8, and the two wire rope chucks 8 are fixedly connected to the top beam section 21a.

[0029] In this embodiment, the upper supporting main beam section 22a, the lower shielding beam section 23a, the lower outrigger main body 11 and the upper outrigger main body 31 can be fixedly connected with the wire rope chuck 8. ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a shield support for a steep medium-thickness coal seam, which comprises a lower landing leg and a support beam mutually articulated, wherein the support beam is arched; a free end of the support beam is further articulated with an upper landing leg; the lower landing leg and the upper landing leg are linear; first hydraulic cylinders are movably connected between the upper landing leg and the support beam and between the lower landing leg and the support beam respectively; the lower landing leg comprises a lower landing leg main body and a lower landing leg extension body; the upper end of the lower landing leg main body is articulated with the support beam; a sharp head is arranged at a free end of the lower landing leg extension body; a second hydraulic cylinder is movably connected between the lower landing leg main body and the lower landing leg extension body; the first hydraulic cylinder on the lower landing leg is articulated with the lower landing leg main body by the bottom end of a cylinder body of the first hydraulic cylinder; and the tail ends of piston rods of the two first hydraulic cylinders are articulated with the support beam respectively. The support has the benefits that the support is good in stability and safety and can be adjusted with changes in coal seam thickness and a dip angle, and a coal seam recovery ratio and a level of mechanization are high.

Description

technical field [0001] The patent of the present invention relates to a support facility for medium-thick coal seam mining, in particular to a shield support for the mining of steeply inclined medium-thick coal seams. Background technique [0002] The supporting equipment in the coal mining face is the guarantee facility for the safe work of the coal mine, and its stability during use and the controllability of moving the frame are important indicators of this type of equipment. The existing fully mechanized mining hydraulic support can fully meet the safety and reliability requirements of medium-thick coal seam mining, but it is usually only suitable for the mining of coal seams with an inclination angle of less than 50 degrees. The downward force component is too large, and the stability of the equipment itself is extremely poor. Therefore, the existing hydraulic supports are not suitable for steeply inclined coal seams, and it is difficult to fundamentally eliminate the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): E21D23/04E21D23/16
Inventor 王洁韩志华王宏龙建明李宗福杨林汪德容
Owner 重庆天巨承机械制造有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap