Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Non-pitwood withdrawing method for hydraulic supports during fully mechanized face withdrawing

A technology of hydraulic support and fully mechanized mining face, which is applied in the direction of mine roof support, pillar/support, mining equipment, etc., can solve the problems of low reliability of wooden point column support, non-recyclable wood, and great threat to construction safety, etc., and achieve recovery The effect of good withdrawal operation environment, good working environment and high safety

Inactive Publication Date: 2016-05-11
ANHUI UNIV OF SCI & TECH
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The patent application number 201210331892.4 discloses an improved hydraulic support retraction process in fully mechanized mining face. In the process of moving forward the three cover supports, but in the process of withdrawing the hydraulic support by using this process, wooden materials are still used to maintain the roof of the original position after the cover support is lowered. There is a big threat to construction safety and the reliability of wooden point column support Unfavorable factors such as low height and non-recyclable wood

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
  • Non-pitwood withdrawing method for hydraulic supports during fully mechanized face withdrawing
  • Non-pitwood withdrawing method for hydraulic supports during fully mechanized face withdrawing
  • Non-pitwood withdrawing method for hydraulic supports during fully mechanized face withdrawing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Below in conjunction with accompanying drawing, the present invention will be further described, see Figure 1~5 :

[0022] (1) When the fully mechanized mining face is closed, the plan view before the hydraulic support of the fully mechanized mining face is withdrawn is as follows: figure 1 shown.

[0023] (2) Pull out the first hydraulic support at the junction of the fully mechanized mining face and the section transportation level roadway according to the normal method of pulling out the frame, and adjust the hydraulic support to be basically consistent with the inclination direction of the cutting eye by using the slow winch traction, and lift it up The hydraulic support supports the roof, as the first mobile-support cover hydraulic support, such as figure 2 shown. Before withdrawing as the first mobile-support shielding hydraulic support, the front floor of the frame should be laid flat to prevent the hydraulic support from being skewed due to uneven bottom pl...

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 non-pitwood withdrawing method for hydraulic supports during fully mechanized face withdrawing. According to the method, a withdrawing lane, hydraulic supports, single hydraulic props and mobile-supporting shield hydraulic supports are mainly included. The method is characterized in that the recyclable single hydraulic prop capable of being repeatedly utilized is adopted for replacing a raw wood mass point pillar supporting top plate, meanwhile, the two fully mechanized face mobile-supporting shield hydraulic supports are adopted as mobile supporting platforms used for withdrawing of other hydraulic supports, and top plates of a haulback region sequentially withdraw the other hydraulic supports after the supporting hydraulic supports are withdrawn; in the withdrawing process, the two mobile-supporting shield hydraulic supports are pulled by means of the cooperation of a self-moving function and slow winching to move upwards in a staggered mode, then, false roofs laid by net ropes of the haulback region slowly sink, and the phenomenon that pressure is exerted on the top plates suddenly and the top plates fall down to the haulback region is avoided, so that the safety is improved, and no pitwood consumption is generated. According to the non-pitwood withdrawing method, safe and rapid withdrawing of the fully mechanized face hydraulic supports can be achieved, and the safety of the hydraulic support withdrawing operation is greatly improved.

Description

technical field [0001] The invention relates to a retraction technology of fully mechanized mining equipment, in particular to a method for retracting a hydraulic support without pit logs when a fully mechanized mining face is retracted. Background technique [0002] Comprehensive mechanized coal mining is the most common coal mining method. The equipment in the fully mechanized mining face generally tends to be large-scale. , scraper conveyor, hydraulic support. Because the equipment in the fully mechanized mining face is generally large-scale equipment, and relatively cumbersome, the retraction workload is heavy. The traditional retraction method generally adopts single hydraulic props and wooden point columns to support the roof, which has many unfavorable factors such as many transportation links, low transportation efficiency, great safety threats, low reliability of wooden point column supports, and non-recyclable wood. The construction period is often not effectivel...

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): E21D23/16E21D15/44
CPCE21D23/16E21D15/44
Inventor 马海峰庞冬冬史文豹曹九祝
Owner ANHUI UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com