Impact-resistance and energy-absorption lengthening bar for single prop

A technology of single pillars and extension rods, which is applied in pillars/brackets, mining equipment, earthwork drilling and mining, etc., can solve the problems of frequency and strength increase, slow down production progress, large deformation, etc., and achieve strong energy absorption and anti-shock ability , easy to carry, simple design

Inactive Publication Date: 2014-02-05
LIAONING TECHNICAL UNIVERSITY
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the next few years, most mines will enter the stage of deep mining. The surrounding rock of mining roadways in deep mines will deform greatly under high pressure, requiring large deformation of support to give way; the frequency and intensity of rock bursts will increase, causing a large number of roadway support damage , collapse and casualty accidents have seriously affected the safe production of coal mines, which requires the support to have the function of fast energy absorption and anti-shock
[0

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
  • Impact-resistance and energy-absorption lengthening bar for single prop
  • Impact-resistance and energy-absorption lengthening bar for single prop
  • Impact-resistance and energy-absorption lengthening bar for single prop

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0019] Such as figure 1 The shown single pillar anti-shock energy-absorbing extension rod includes a bottom column 5 and a guide column 2, a ring of flanges is arranged on the lower part of the bottom column 5, and a lower backing plate 9 is arranged below the flange, and the lower backing plate 9 is fixedly connected with the bottom column 5; inside the bottom column 5, a spring set is set above the lower backing plate 9, an upper backing plate 7 is set above the spring set, and an energy-absorbing block 6 is set above the upper backing plate 7; strength down cylinder 11, such as figure 2 , image 3 As shown, the high-strength pressing cylinder 11 is welded by at least two metal cylinders through ribs; the high-strength pressing cylinder 11 is tightly pressed on the energy-absorbing block 6; A slider 10 is arranged above the barrel 11, and a groove is arranged on...

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 an impact-resistance and energy-absorption lengthening bar for a single prop. The impact-resistance and energy-absorption lengthening bar for the single prop comprises a sill pillar and a guide pillar. The lower part of the sill pillar is provided with a lower backing plate; the lower backing plate is fixedly connected with the sill pillar; a spring set which is formed by covering compound rubber springs with a tower-shaped spring is arranged in the sill pillar and above the lower backing plate; an upper backing plate is arranged above the spring set; an energy-absorption block is arranged above the upper backing plate; a high-strength pushing cylinder is arranged above the energy-absorption block; the high-strength pushing cylinder is tightly pressed onto the energy-absorption block; a slider is arranged above the high-strength pushing cylinder; the outer edge of the slider is provided with grooves; the guide pillar is arranged in the grooves of the slider and is fixedly connected with the slider; at least one metal energy-absorption cylinder is sheathed outside the guide pillar. According to the impact-resistance and energy-absorption lengthening bar for the single prop disclosed by the invention, by utilizing the characteristic that a high-strength elastic-plastic foam material of the energy-absorption block is extruded to be broken to absorb energy and by utilizing the non-elastic stiffness of the spring set, a support is prevented from generating resonance when being impacted, and meanwhile, the at least one metal energy-absorption cylinder sheathed outside the guide pillar is fractured to absorb the energy.

Description

technical field [0001] The invention belongs to the technical field of coal mine support, and in particular relates to an anti-shock energy-absorbing extension rod for a single pillar. Background technique [0002] With the increase of my country's energy demand and the continuous increase of mining intensity, the excavation depth is getting deeper and deeper, and mines with a depth of several thousand meters are not uncommon. In the next few years, most mines will enter the stage of deep mining. The surrounding rock of mining roadways in deep mines will deform greatly under high pressure, requiring large deformation of support to give way; the frequency and intensity of rock bursts will increase, causing a large number of roadway support damage , Collapse and casualty accidents have seriously affected the safe production of coal mines, which requires the support to have the function of fast energy absorption and anti-shock. [0003] For the ordinary single pillars currentl...

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
IPC IPC(8): E21D15/55
Inventor 聂颖李国臻潘一山李祁徐连满李忠华
Owner LIAONING TECHNICAL UNIVERSITY
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