CN104895590A - Bottom beam for roadway hydraulic support high in energy absorption speed, burnt resistant and floor heave resistant - Google Patents
Bottom beam for roadway hydraulic support high in energy absorption speed, burnt resistant and floor heave resistant Download PDFInfo
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- CN104895590A CN104895590A CN201510297543.9A CN201510297543A CN104895590A CN 104895590 A CN104895590 A CN 104895590A CN 201510297543 A CN201510297543 A CN 201510297543A CN 104895590 A CN104895590 A CN 104895590A
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Abstract
A bottom beam for a roadway hydraulic support high in energy absorption speed, burnt resistant and floor heave resistant is characterized in that a plurality of burst energy absorption unit mounting cavities are evenly distributed in a counter-arch variable section box beam, burst energy absorption units are located in the burst energy absorption unit mounting cavities, carbon fiber cloth is located below the burst energy absorption units and is tightly attached to the bottoms of the burst energy absorption units, the end of the carbon fiber cloth is fixedly connected to the counter-arch variable section box beam, each burst energy absorption unit comprises an energy absorption block and a burst block, with the energy absorption block being located above a top board of the burst block and the top of the energy absorption block being tightly attached to the upper wall of the corresponding burst energy absorption unit mounting cavity; the sidewall of each burst energy absorption unit mounting cavity is provided with guide ribs, and side boards of the burst blocks are provided with guide grooves; the guide ribs are located in the guide grooves; the burst blocks are in sliding fit with the sidewalls of the burst energy absorption unit mounting cavities; the energy absorption blocks are made of metal thin-walled tubes filled with porous foam alloy material; the upper and lower end faces of each energy absorption block are planes parallel to each other; the upper end face of the top board of each burst block is planar; the lower end face of the bottom board of each burst block is arced.
Description
Technical field
The invention belongs to safety of coal mines support technology field, particularly relate to the alley hydraulic support bottom girder of distension of a kind of quick energy-absorbing erosion control anti-end.
Background technology
Happen suddenly in process of coal mining bump time, often can cause roadway surrounding rock structural instability, occur fall of ground, wall caving and end distension etc.; thus cause excavation support to be out of shape destruction of even collapsing; cause casualties accident, and coal mining activity is forced to stop, and coal supply mine belt carrys out larger economic loss.
Wherein, when floor lift in gallery occurs; along with the strenuous vibration of base plate; rock mass burst fragmentation also produces enormous impact effect instantaneously to upper coating equipment and prop, and frame bottom often can be caused to damage, and track is lifted; belt is thrown; drift section reduces, and hinders normal transport and passes through, and therefore has to drop into a large amount of man power and materials and carries out provisional process such as " digging the end ".Whole piece tunnel can be caused time serious to scrap, seriously constrain the normal production operation in colliery.
At present, existing part mine introduces some new-type alley hydraulic supports, be intended to be pressed with defending roadway bump by the supporting of high strength, but consequent effect is: because stiffness of support is too large, under bump, do not have buffering allow the ability of pressure, impacting less fashion can resist, but when impact is larger, first support can damage at most weak part, cause the support capacity of support to weaken, even there is the danger of unstable failure.For the existing gate-type alley hydraulic support of one, this supporting structure be made up of high strength box bottom girder, back timber and two hydraulic props, in the end distension that bump causes, concentrate because the spacing hinged place of bottom girder produces stress, bottom girder can be caused to raise up, bend, what have thoroughly fractures, and destructiveness is more serious.
Summary of the invention
For prior art Problems existing, the invention provides the alley hydraulic support bottom girder of distension of a kind of quick energy-absorbing erosion control anti-end, when tunnel burst bump when having end distension trend, effectively can absorb the impact energy of base plate, ensure that bottom girder is not damaged, thus the percussion that alleviation support is subject to, prevent roadway support system unstable failure.
To achieve these goals, the present invention adopts following technical scheme: the alley hydraulic support bottom girder of distension of a kind of quick energy-absorbing erosion control anti-end, comprise antiarch variable cross-section box type beam, punching press energy-absorbing assembly and carbon cloth, some punching press energy-absorbing assembly installation cavitys are evenly distributed with in described antiarch variable cross-section box type beam, described punching press energy-absorbing assembly is positioned at punching press energy-absorbing assembly installation cavity, described carbon cloth is positioned on the downside of punching press energy-absorbing assembly, and fit tightly with punching press energy-absorbing assembly bottom, carbon cloth end is connected mutually with antiarch variable cross-section box type beam.
Described punching press energy-absorbing assembly comprises energy absorbent block and pressing block, and described energy absorbent block is positioned on pressing block top board, and energy absorbent block top and punching press energy-absorbing assembly installation cavity epicoele wall fit tightly.
Described punching press energy-absorbing assembly installation cavity sidewall is provided with guiding rib, and described pressing block side plate is provided with gathering sill, and guiding rib is positioned at gathering sill, by the slip of guiding rib at gathering sill, makes pressing block and punching press energy-absorbing assembly installation cavity snug engagement.
Described energy absorbent block is made up of the thin-wall metal pipe being filled with porous foam alloy material.
The upper and lower end face of described energy absorbent block is plane, and upper and lower end face parallels.
Described pressing block top board upper surface is plane, and pressing block base plate lower surface is cambered surface.
Beneficial effect of the present invention:
The present invention compared with prior art, abandon the form of structure of the multistage connection that traditional alley hydraulic support bottom girder adopts, adopted be stressed more rationally, the more excellent antiarch variable cross-section box type beam of supporting effect, and also installed punching press energy-absorbing assembly additional in antiarch variable cross-section box type beam.Under quasistatic pressure from surrounding rock; bottom girder basic maintaining rigidness supporting state; when bump occurs; base plate has end distension trend; can be stepped down by the damaged deformation of energy absorbent block, absorb the impact kinetic energy of floor rocks fast, the percussion that alleviation bottom girder and whole supporting structure are subject to; protection hydraulic support overall structure is not damaged, thus prevents the unstable failure of roadway support system.
The present invention possesses the energy absorbent block by settling different technologies parameter, can meet the distension erosion control supporting requirement of the anti-end, different tunnel; The present invention is consumed energy and the mode of not accumulation of energy by adopting, and the impact kinetic energy by floor rocks absorbs, and not puts aside in bottom girder or support, avoids support to tend to non-stable upper state gradually; Punching press energy-absorbing assembly of the present invention is positioned at punching press energy-absorbing assembly installation cavity due to antiarch variable cross-section box type beam, saves the digging space in tunnel, and the energy-absorbing of punching press simultaneously assembly is replaceable, ensure that reusing for a long time of antiarch variable cross-section box type beam.
Accompanying drawing explanation
Fig. 1 is the alley hydraulic support structure of bottom girder schematic diagram of distension of a kind of quick energy-absorbing erosion control anti-end of the present invention;
Fig. 2 is antiarch variable cross-section box type beam top view;
Fig. 3 is A-A sectional drawing in Fig. 1;
Fig. 4 is energy-absorbing assembly plan view;
In figure, 1-antiarch variable cross-section box type beam, 2-carbon cloth, 3-energy absorbent block, 4-pressing block, 5-guiding rib, 6-gathering sill, 7-punching press energy-absorbing assembly installation cavity.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1,2,3, 4, the alley hydraulic support bottom girder of distension of a kind of quick energy-absorbing erosion control anti-end, comprise antiarch variable cross-section box type beam 1, punching press energy-absorbing assembly and carbon cloth 2, some punching press energy-absorbing assembly installation cavitys 7 are evenly distributed with in described antiarch variable cross-section box type beam 1, described punching press energy-absorbing assembly is positioned at punching press energy-absorbing assembly installation cavity 7, described carbon cloth 2 is positioned on the downside of punching press energy-absorbing assembly, and fit tightly with punching press energy-absorbing assembly bottom, carbon cloth 2 end is connected mutually with antiarch variable cross-section box type beam 1.
Described punching press energy-absorbing assembly comprises energy absorbent block 3 and pressing block 4, and described energy absorbent block 3 is positioned on pressing block 4 top board, and energy absorbent block 3 top and punching press energy-absorbing assembly installation cavity 7 epicoele wall fit tightly.
Described punching press energy-absorbing assembly installation cavity 7 sidewall is provided with guiding rib 5, described pressing block 4 side plate is provided with gathering sill 6, guiding rib 5 is positioned at gathering sill 6, by the slip of guiding rib 5 at gathering sill 6, makes pressing block 4 and punching press energy-absorbing assembly installation cavity 7 snug engagement.
Described energy absorbent block 3 is made up of the thin-wall metal pipe being filled with porous foam alloy material.
The upper and lower end face of described energy absorbent block 3 is plane, and upper and lower end face parallels.
Described pressing block 4 top board upper surface is plane, and pressing block 4 base plate lower surface is cambered surface.
Below in conjunction with accompanying drawing, a use procedure of the present invention is described:
Have employed the gate-type alley hydraulic support of hydraulic support bottom girder of the present invention, in the present embodiment, antiarch variable cross-section box type beam 1 and pressing block 4 are welded by Aldecor plate, yield strength >=the 550MPa of this steel plate, energy absorbent block 3 is made up of the thin-wall metal pipe being filled with porous foam alloy material, its intensity >=50MPa, what carbon cloth 2 adopted is high-strength carbon fiber cloth, and its thickness is 5 ~ 10mm.Wherein, according to the actual supporting demand in tunnel, need intensity and the energy-absorbing ratio of determining energy absorbent block 3, the acquisitions such as the aperture of this proportioning by each metallic element in setting alloy, frothing percentage and thin-wall metal pipe, simultaneously, by setting the timber intensity of thin-wall metal pipe, wall thickness and physical dimension, bearing capacity and the flexing energy absorption characteristics of thin-wall metal pipe can be determined.
There is not bump generally, the pressure of roadway floor country rock can act on punching press energy-absorbing assembly by carbon cloth 2, again by some punching press energy-absorbing component passes on antiarch variable cross-section box type beam 1, and bear quasistatic Bottom Pressure by antiarch variable cross-section box type beam 1.
When bump occurs; roadway floor is once there be end distension trend; floor rocks can produce percussion by the pressing block 4 of carbon cloth 2 pairs of punching press energy-absorbing assemblies; force pressing block 4 impact compress energy absorbent block 3; after the pressure born when energy absorbent block 3 exceedes its threshold value; energy absorbent block 3 can be destroyed immediately and carry out distortion and step down; thus reach the impact kinetic energy absorbing floor rocks fast; to alleviate the percussion suffered by antiarch variable cross-section box type beam 1, protection hydraulic support overall structure is not damaged.
Scheme in embodiment is also not used to limit scope of patent protection of the present invention, and the equivalence that all the present invention of disengaging do is implemented or changed, and is all contained in the scope of the claims of this case.
Claims (6)
1. the alley hydraulic support bottom girder of the distension of the quick energy-absorbing erosion control anti-end, it is characterized in that: comprise antiarch variable cross-section box type beam, punching press energy-absorbing assembly and carbon cloth, some punching press energy-absorbing assembly installation cavitys are evenly distributed with in described antiarch variable cross-section box type beam, described punching press energy-absorbing assembly is positioned at punching press energy-absorbing assembly installation cavity, described carbon cloth is positioned on the downside of punching press energy-absorbing assembly, and fit tightly with punching press energy-absorbing assembly bottom, carbon cloth end is connected mutually with antiarch variable cross-section box type beam.
2. the alley hydraulic support bottom girder of distension of a kind of quick energy-absorbing erosion control anti-end according to claim 1, it is characterized in that: described punching press energy-absorbing assembly comprises energy absorbent block and pressing block, described energy absorbent block is positioned on pressing block top board, and energy absorbent block top and punching press energy-absorbing assembly installation cavity epicoele wall fit tightly.
3. the alley hydraulic support bottom girder of distension of a kind of quick energy-absorbing erosion control anti-end according to claim 2, it is characterized in that: on described punching press energy-absorbing assembly installation cavity sidewall, be provided with guiding rib, described pressing block side plate is provided with gathering sill, guiding rib is positioned at gathering sill, by the slip of guiding rib at gathering sill, make pressing block and punching press energy-absorbing assembly installation cavity snug engagement.
4. the alley hydraulic support bottom girder of distension of a kind of quick energy-absorbing erosion control anti-end according to claim 2, is characterized in that: described energy absorbent block is made up of the thin-wall metal pipe being filled with porous foam alloy material.
5. the alley hydraulic support bottom girder of distension of a kind of quick energy-absorbing erosion control anti-end according to claim 2, is characterized in that: the upper and lower end face of described energy absorbent block is plane, and upper and lower end face parallels.
6. the alley hydraulic support bottom girder of distension of a kind of quick energy-absorbing erosion control anti-end according to claim 2, is characterized in that: described pressing block top board upper surface is plane, and pressing block base plate lower surface is cambered surface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510297543.9A CN104895590B (en) | 2015-06-02 | 2015-06-02 | A kind of alley hydraulic support bottom girder of quick energy-absorbing erosion control anti-bottom distension |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510297543.9A CN104895590B (en) | 2015-06-02 | 2015-06-02 | A kind of alley hydraulic support bottom girder of quick energy-absorbing erosion control anti-bottom distension |
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| CN104895590A true CN104895590A (en) | 2015-09-09 |
| CN104895590B CN104895590B (en) | 2017-03-01 |
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| CN201510297543.9A Active CN104895590B (en) | 2015-06-02 | 2015-06-02 | A kind of alley hydraulic support bottom girder of quick energy-absorbing erosion control anti-bottom distension |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194097A (en) * | 2017-12-29 | 2018-06-22 | 山东科技大学 | A kind of convex energy-absorbing bearing structure for preventing floor lift in gallery |
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|---|---|---|---|---|
| US3985328A (en) * | 1974-12-21 | 1976-10-12 | Hermann Hemscheidt Maschinenfabrik | Prop-and-shoe assemblies of self-advancing mine roof-supports |
| CN201826862U (en) * | 2010-10-28 | 2011-05-11 | 辽宁工程技术大学 | Demising buffering and power-absorbing single hydraulic bracket device |
| CN201826863U (en) * | 2010-10-28 | 2011-05-11 | 辽宁工程技术大学 | Fully mechanized mining hydraulic support device capable of abdicating and buffering |
| CN102400695A (en) * | 2011-12-02 | 2012-04-04 | 辽宁工程技术大学 | Intelligent anti-impact bracket device |
| CN203035217U (en) * | 2012-12-04 | 2013-07-03 | 河南南车重型装备有限公司 | Hydraulic support preventing rock burst |
| CN203570328U (en) * | 2013-10-14 | 2014-04-30 | 义马佳毅机械有限责任公司 | Rock burst preventing support |
| CN203879529U (en) * | 2014-04-29 | 2014-10-15 | 王松豪 | Energy-absorption self-moving hydraulic support |
-
2015
- 2015-06-02 CN CN201510297543.9A patent/CN104895590B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3985328A (en) * | 1974-12-21 | 1976-10-12 | Hermann Hemscheidt Maschinenfabrik | Prop-and-shoe assemblies of self-advancing mine roof-supports |
| CN201826862U (en) * | 2010-10-28 | 2011-05-11 | 辽宁工程技术大学 | Demising buffering and power-absorbing single hydraulic bracket device |
| CN201826863U (en) * | 2010-10-28 | 2011-05-11 | 辽宁工程技术大学 | Fully mechanized mining hydraulic support device capable of abdicating and buffering |
| CN102400695A (en) * | 2011-12-02 | 2012-04-04 | 辽宁工程技术大学 | Intelligent anti-impact bracket device |
| CN203035217U (en) * | 2012-12-04 | 2013-07-03 | 河南南车重型装备有限公司 | Hydraulic support preventing rock burst |
| CN203570328U (en) * | 2013-10-14 | 2014-04-30 | 义马佳毅机械有限责任公司 | Rock burst preventing support |
| CN203879529U (en) * | 2014-04-29 | 2014-10-15 | 王松豪 | Energy-absorption self-moving hydraulic support |
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| CN108194097A (en) * | 2017-12-29 | 2018-06-22 | 山东科技大学 | A kind of convex energy-absorbing bearing structure for preventing floor lift in gallery |
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| CN104895590B (en) | 2017-03-01 |
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