CN103982208A - Mine inner and outer turnover resistive energy-absorption anti-impact device - Google Patents
Mine inner and outer turnover resistive energy-absorption anti-impact device Download PDFInfo
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- CN103982208A CN103982208A CN201410209609.XA CN201410209609A CN103982208A CN 103982208 A CN103982208 A CN 103982208A CN 201410209609 A CN201410209609 A CN 201410209609A CN 103982208 A CN103982208 A CN 103982208A
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- absorption box
- energy
- energy absorption
- anchor pole
- anchor rod
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Abstract
The invention belongs to coal mine safety equipment, and particularly relates to a mine inner and outer turnover resistive energy-absorption anti-impact device, which is characterized by comprising a hydraulic pillar (1), an anchor rod (8) and a steel plate (7); the inner bottom surface of a steel cylinder (4) is provided with an energy absorption box (3); the energy absorption box (3) is made of thin-walled rigid metal; the inside diameter of the lower section of the energy absorption box (3) is larger than the outer diameter of the upper section of the energy absorption box (3); the height of the upper section of the energy absorption box (3) is two thirds of the total height of the energy absorption box (3); the upper end of the energy absorption box (3) is provided with a round rigid base plate (2); the hydraulic pillar (1) is arranged above the round rigid base plate; the combination form of the energy absorption box (3) and the anchor rod (8) is that the lower end of the anchor rod (8) penetrates through a tray (6); the energy absorption box (6) is arranged on the tray (6) in a penetrating mode; the anchor rod (8) above the energy absorption box (3) is provided with the steel plate (7) in a penetrating mode; the top end of the anchor rod (8) is fixed with a surrounding rock body. The mine inner and outer turnover resistive energy-absorption anti-impact device has certain bearing capacity, can resist general rock burst, provides time for the hydraulic pillar to open an overflow valve in the degeneration process, and well plays a role in protecting a supporting system.
Description
Technical field
The invention belongs to safety of coal mines equipment, particularly a kind of mining inside and outside convertible anti-energy-absorbing checking motion that allows.
Background technology
Rich coal resources in China, current explored coal reserves accounts for 11.1% of whole world coal total resources, and coal reserves is in the majority in deep, along with developing rapidly of Chinese national economy, the demand of coal constantly increases, the coal mining degree of depth and difficulty strengthen gradually, and the generation of bump is more and more frequent, produce greatly to people's life, property and production safety and threaten.Support pattern mainly comprises anchor pole, U-shaped steel, canopy-Suo Xietong supporting, concrete spraying support, gate type hydraulic support both at home and abroad at present.Bolt support is the mechanical state that changes country rock itself by the anchor pole of country rock inside, forms an entirety and stable rock band around tunnel, utilizes anchor pole and country rock acting in conjunction, reaches the object of safeguarding stability of the roadway.But the design of existing anchor pole does not also reach the effect of erosion control, be difficult to apply having in impact roadway support.U-shaped steel supporting can provide higher support force, but the frictional force that U-shaped steel fastener provides does not reach requirement, and the enabling capabilities of support is not in full use.In addition, the easy unbalance stress of U-shaped support, there is concentrated load and eccentric load in part, the support distortion that is distorted, significantly reduces rack bearing ability, and overall unstable failure occurs very easily to occur while impact.Canopy-Suo Xietong supporting can strengthen Surrounding Rock Strength, improve support capacity, but variable row amount is little, and shock-absorbing capacity is poor.Concrete spraying support has strengthened Surrounding Rock Strength, plays and reduces and stop surrouding rock deformation effect, but be not suitable for preventing and treating bump.Gate type hydraulic support adopts hydraulic prop as support; supporting intensity is high; reach the effect of supporting overlying rock; the overflow valve of hydraulic prop is set specified resistance; play the distortion that suppresses country rock and protected again the gate type hydraulic support compression failure under heavily stressed; in the time reaching specified resistance, overflow valve is opened, the energy-absorbing of stepping down.But in the time there is bump, gate type hydraulic support is difficult to the powerful shock loading of opposing, causes stent strut bending, fracture and detonation etc.A large amount of supportings destroy statistics and show, support is mainly because of the poor sudden destroying of impact resistance.
Summary of the invention
The object of the invention is to overcome above-mentioned technical deficiency, provide a kind of shock resistance cut the mining inside and outside convertible anti-energy-absorbing checking motion that allows that lotus ability is strong, applied widely, safe and reliable.
The technical scheme that technical solution problem of the present invention adopts is: mining inside and outside convertible resisting allows energy-absorbing checking motion comprise: hydraulic prop, anchor pole, steel plate, be characterized in, on the inner bottom surface of steel cylinder, energy-absorption box is set, energy-absorption box is that thin-walled rigid metal is made, the hypomere internal diameter of energy-absorption box is greater than the external diameter of epimere, hypomere outer radius and epimere outer radius are poor is d, high 1/3rd of the height overall that accounts for of hypomere of energy-absorption box, the height of energy-absorption box epimere accounts for 2/3rds of overall height, establish Circular Rigid backing plate in the upper end of energy-absorption box, above Circular Rigid backing plate, fill hydraulic prop, the form of structure that energy-absorption box is combined with anchor pole for to be coated with pallet on anchor pole lower end, and pallet is fixed with nut and anchor pole, installs energy-absorption box on pallet, on the anchor pole above energy-absorption box, installs steel plate, and the top of anchor pole and country rock body are fixed.
The invention has the beneficial effects as follows: mining inside and outside convertible resisting allows energy-absorbing checking motion have certain bearing capacity, can resist general bump occurs, in the time that more serious bump occurs, energy-absorption box can play the energy-absorbing of stepping down and fall the effect of punching, energy-absorption box itself is by the country rock impact energy that dissipates in switching process inside and outside conquassation, the compressed space of energy-absorption box provides certain energy Free up Memory to country rock, greatly reduce to act on the impact force on support, in degeneration process, open overflow valve for hydraulic prop the time is provided, play preferably the effect of protection support system.
Brief description of the drawings
Illustrate with embodiment below in conjunction with accompanying drawing.
Fig. 1 is mining inside and outside convertible anti-allow energy-absorbing checking motion and hydraulic prop combining form figure.
Fig. 2 is mining inside and outside convertible anti-allow energy-absorbing checking motion and anchor pole combining form figure.
In figure, 1-hydraulic prop; 2-Circular Rigid backing plate; 3-energy-absorption box; 4-steel cylinder; 5-nut; 6-pallet; 7-steel plate; 8-anchor pole; H-energy-absorption box height overall; Upper and lower section of semidiameter of d-energy-absorption box; D
1-energy-absorption box epimere external diameter; D
2-energy-absorption box hypomere external diameter.
Detailed description of the invention
Embodiment, with reference to accompanying drawing 1, the mining inside and outside convertible energy-absorption box 3 allowing in energy-absorbing checking motion that resists is to adopt thin-walled rigid metal to make, the hypomere height of energy-absorption box 3 is 2/3rds of energy-absorption box 3 overall height H.The outer diameter D of energy-absorption box 3 hypomeres
2be greater than energy-absorption box 3 epimere outer diameter D
1, under energy-absorption box, outer radius and the poor d of epimere outer radius are greater than the wall thickness of energy-absorption box 3.Energy-absorption box 3 is contained on the bottom surface in steel cylinder 4, establishes Circular Rigid backing plate 2 in the upper end of energy-absorption box 3, connects hydraulic prop 1 on Circular Rigid backing plate 2.In the time that hydraulic prop 1 is subject to country rock impact; the outside upset at epimere 1/3rd H places of energy-absorption box 3; on energy-absorption box 3, pars infrasegmentalis 2/3rds H places are avaled by shearing force in energy-absorption box 3 hypomeres, make energy-absorption box 3 form three layers of wall and support, and can effectively protect hydraulic prop 1 system not to be damaged.With reference to accompanying drawing 2, energy-absorption box 3 has screw thread with the lower end that anchor pole 8 combining forms are anchor pole 8, above anchor pole 8 lower ends, installs pallet 6, and pallet 6 use nuts 5 are fixing with anchor pole 8.On pallet 6, install energy-absorption box 3, steel plate 7 is housed above energy-absorption box 3, together with the top of anchor pole 8 is fixing with country rock body.Impact force action is on steel plate 7, and steel plate 7 compresses energy-absorption box 3, and anchor pole is not damaged.
Claims (1)
1. the mining inside and outside convertible anti-energy-absorbing checking motion that allows, comprise hydraulic prop (1), anchor pole (8), steel plate (7), it is characterized in that arranging energy-absorption box (3) on the inner bottom surface of steel cylinder (4), energy-absorption box (3) is made for thin-walled rigid metal, the hypomere internal diameter of energy-absorption box (3) is greater than the external diameter of epimere, hypomere outer radius and epimere outer radius are poor is d, high 1/3rd of the height overall that accounts for of hypomere of energy-absorption box (3), the height of energy-absorption box (3) epimere accounts for 2/3rds of overall height, establish Circular Rigid backing plate (2) in the upper end of energy-absorption box (3), above Circular Rigid backing plate, fill hydraulic prop (1), energy-absorption box (3) is on anchor pole (8) lower end, to be coated with pallet (6) with the form of structure of anchor pole (8) combination, pallet (6) is fixing with nut (5) and anchor pole (8), on pallet (6), install energy-absorption box (6), on the anchor pole (8) of energy-absorption box (3) top, install steel plate (7), top and the country rock body of anchor pole (8) are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410209609.XA CN103982208A (en) | 2014-05-19 | 2014-05-19 | Mine inner and outer turnover resistive energy-absorption anti-impact device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410209609.XA CN103982208A (en) | 2014-05-19 | 2014-05-19 | Mine inner and outer turnover resistive energy-absorption anti-impact device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103982208A true CN103982208A (en) | 2014-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410209609.XA Pending CN103982208A (en) | 2014-05-19 | 2014-05-19 | Mine inner and outer turnover resistive energy-absorption anti-impact device |
Country Status (1)
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| CN (1) | CN103982208A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819002A (en) * | 2015-04-23 | 2015-08-05 | 辽宁工程技术大学 | Constant resistance avoiding energy-absorbing device for mining |
| CN105134260A (en) * | 2015-08-20 | 2015-12-09 | 天地科技股份有限公司 | Capacity-increase buffering anti-powerful-impact double telescopic stand columns |
| CN106894832A (en) * | 2017-04-25 | 2017-06-27 | 辽宁工程技术大学 | A kind of metal cutting formula energy-absorbing erosion control hydraulic vertical prop |
| CN113074007A (en) * | 2021-04-26 | 2021-07-06 | 辽宁工程技术大学 | Anti-impact energy absorber for hydraulic support |
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| CN203050749U (en) * | 2013-01-10 | 2013-07-10 | 贵州开磷（集团）有限责任公司 | Energy-absorbing transformable anchor rod tray |
| CN103573279A (en) * | 2013-11-14 | 2014-02-12 | 山东科技大学 | Mining telescopic energy adsorption anti-impact viscous damping anchor rod and supporting method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20060028038A1 (en) * | 2001-09-27 | 2006-02-09 | Glasgow Scott C | Plastic energy management beam |
| CN102834641A (en) * | 2010-04-08 | 2012-12-19 | 杰富意钢铁株式会社 | Collision energy absorbing structure |
| CN202348296U (en) * | 2011-12-15 | 2012-07-25 | 黑龙江科技学院 | Buffering monomer hydraulic support |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819002A (en) * | 2015-04-23 | 2015-08-05 | 辽宁工程技术大学 | Constant resistance avoiding energy-absorbing device for mining |
| CN104819002B (en) * | 2015-04-23 | 2019-08-06 | 辽宁工程技术大学 | Mining constant-resistance resigning energy absorption device |
| CN105134260A (en) * | 2015-08-20 | 2015-12-09 | 天地科技股份有限公司 | Capacity-increase buffering anti-powerful-impact double telescopic stand columns |
| CN106894832A (en) * | 2017-04-25 | 2017-06-27 | 辽宁工程技术大学 | A kind of metal cutting formula energy-absorbing erosion control hydraulic vertical prop |
| CN113074007A (en) * | 2021-04-26 | 2021-07-06 | 辽宁工程技术大学 | Anti-impact energy absorber for hydraulic support |
| CN113074007B (en) * | 2021-04-26 | 2022-09-27 | 辽宁工程技术大学 | Anti-impact energy absorber for hydraulic support |
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Application publication date: 20140813 |