CN103321660B - Mining constant-resistance yielding energy-absorbing impact-resisting supporting device - Google Patents
Mining constant-resistance yielding energy-absorbing impact-resisting supporting device Download PDFInfo
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- CN103321660B CN103321660B CN201310258013.4A CN201310258013A CN103321660B CN 103321660 B CN103321660 B CN 103321660B CN 201310258013 A CN201310258013 A CN 201310258013A CN 103321660 B CN103321660 B CN 103321660B
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- support tube
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Abstract
The invention discloses a mining constant-resistance yielding energy-absorbing impact-resisting supporting device and belongs to the technical field of coal mine safety supporting. The mining constant-resistance yielding energy-absorbing impact-resisting supporting device comprises a head cover, a first support barrel, a second support barrel, a base, a positioning ring and an anchoring force ring, the head cover is connected with the upper end of the first support barrel through a thread, the lower end of the first support barrel is in contact fit with the upper end of the second support barrel, the lower end of the second support barrel is connected with the base through the thread, an energy-absorbing core is mounted between the roof and the base, the positioning sleeve is sleeved outside the first support barrel and fixedly connected with the upper end of the outer wall of the second support barrel, and the anchoring force ring is fixedly sleeved on the middle-lower portion of the outer wall of the second support barrel. Yielding and energy absorption can be realized by the aid of outward turning of the barrel walls after the energy-absorbing core is under stress, and the mining constant-resistance yielding energy-absorbing impact-resisting supporting device is simple in structure, rapid in response, constant in resistance, large in deformation amplitude, high in energy-absorbing efficiency and capable of realizing quick yielding and pressure releasing under rock burst.
Description
Technical field
The invention belongs to safety of coal mines support technology field, particularly relate to a kind of mining constant-resistance and allow pressure energy-absorbing erosion control suspension device.
Background technology
Bump is the major impetus disaster in colliery, is also a global mining difficult problem.When bump occurs, the great number of elastic energy abrupt release of rock mass inner accumulated, cause the strenuous vibration of goaf and roadway surrounding rock, cause floor lift in gallery, wall caving and roof fall, even cause the integrally-built sudden unstable failure of country rock, make the prop of tunnel or work plane bear huge impact load instantaneously, cause the distortion of prop, damage or destruction of thoroughly collapsing, the serious threat life security of staff, have impact on the normal exploitation of mineral resources.
At present, coal mine support is substantially all based on rigid protection, namely main rigid structures support system is supported for brute force, often the impact resistance of rigid protection equipment is poor, the holding state that still can keep relative stability is depressed in static ore deposit, once occur that foreign impacts is vibrated, more fragile one side will be shown significantly, often cause the impact unstable failure of whole support system due to part prop burst damage.
With hydraulic support, although hydraulic support itself has certain pooling feature, but the pillar of hydraulic support is the regulation and control being realized support force by adjust flux valve, the pressure speed that allows of pillar is subject to certain restrictions, when the leg portion of hydraulic support is subject to bump, flow valve in it may be caused to be washed out or detonation by the high pressure of moment, thus cause toppling over and damaging of hydraulic support entirety, for this situation, just need a kind of suspension device to make up the weak defect of hydraulic support impact resistance, the pillar of protection hydraulic support is not damaged, improve the safety factor of prop.
Summary of the invention
For prior art Problems existing, the invention provides a kind of structure simple, be swift in response, constant resisting force, amplitude of deformation are large, energy absorbing efficiency is high and the mining constant-resistance of release of stepping down fast under can realizing bump allows pressure energy-absorbing erosion control suspension device.
To achieve these goals, the present invention adopts following technical scheme: a kind of mining constant-resistance allows presses energy-absorbing erosion control suspension device, comprise top cover, the first support tube, the second support tube, base, locating ring and determine power ring, described top cover is connected by screw thread with the upper end of the first support tube, the lower end of the first support tube coordinates with the upper-end contact of the second support tube, and the lower end of the second support tube is connected with base by thread; Energy-absorbing core body is installed between top cover and base; It is outside that described locating ring is sleeved on the first support tube, and with the upper end Joint of the second support tube outer tube wall; The described power of determining ring is fixedly set in the middle and lower part of the second support tube outer tube wall.
Described first support tube is set to cylinder barrel shaped structure, and the lower end of the first support tube outer tube wall is provided with some boss, and boss is circumferentially uniformly distributed at the first support tube outer tube wall.
Described second support tube is set to cylinder barrel shaped structure, and the barrel of the second support tube is set to grating structure, and adjacent two screens set gradually as tabula rasa and convex board, and the second supporting cylinder wall lower end is set to integrative-structure; The middle and upper part of tabula rasa external surface is provided with screw thread, the middle and lower part of convex board external surface is provided with screw thread; The upper end of convex board inner surface is provided with boss, and the boss of convex board is corresponding with the boss of the first support tube; Described tabula rasa width is in a circumferential direction greater than convex board width in a circumferential direction, and tabula rasa length is in the axial direction greater than convex board length in the axial direction.
The lower surface of described locating ring is provided with some prominent eaves blocks, and prominent eaves block is uniformly distributed in a circumferential direction, and the inner surface of prominent eaves block is provided with screw thread, and the screw thread of described prominent eaves block matches with the screw thread of tabula rasa external surface; Described prominent eaves block width in a circumferential direction, is greater than convex board width in a circumferential direction and is less than tabula rasa width in a circumferential direction.
The center, lower surface of described top cover is provided with the first cylindrical boss; Described energy-absorbing core body is set to cylinder barrel shaped structure, and the lower end barrel of energy-absorbing core body adopts Eversible structure; The center, upper surface of described base is provided with the second cylindrical boss, and the base of the second cylindrical boss side is provided with circular groove; The upper end of described energy-absorbing core body is connected by the first cylindrical boss with top cover, and the lower end of energy-absorbing core body is connected by the second cylindrical boss with base, and the Eversible structure of energy-absorbing core body lower end is corresponding with the circular groove of base.
The inner surface of the described power of determining ring is provided with screw thread, determines power ring and is matched with the screw thread of convex board external surface by the screw thread of its inner surface.
Beneficial effect of the present invention:
Energy-absorbing core body of the present invention adopts cylinder barrel shaped structure, and utilizes the realization of turning up of the barrel after energy-absorbing core body pressurized to step down energy-absorbing, and makes bit rate fast, and energy absorbing efficiency is high; First support tube of the present invention is matched by boss with the second support tube, and the barrel of the second support tube adopts grating structure, when the first support tube is subject to axial impact force, under the pressure of the first support tube, the convex board of the second support tube can be bent outwardly fast, make the stop of the first support tube hasty breaching second support tube, realize stepping down fast of suspension device of the present invention; By regulating the upper and lower position of determining power ring, can realize, to the adjustment of suspension device bearing capacity of the present invention, increasing the applicability of suspension device of the present invention.
Accompanying drawing explanation
Fig. 1 is that the mining constant-resistance of one of the present invention allows pressure energy-absorbing erosion control suspension device structural representation;
Fig. 2 is the first support tube structural representation of the present invention;
Fig. 3 is the top view of Fig. 2;
Fig. 4 is the second support tube structural representation of the present invention;
Fig. 5 is the top view of Fig. 4;
Fig. 6 is A-A sectional view of Fig. 5;
Fig. 7 is locating ring structure schematic diagram of the present invention;
Fig. 8 is the top view of Fig. 7;
Fig. 9 is understructure schematic diagram of the present invention;
In figure, 1-top cover, the 2-the first support tube, 3-locating ring, the 4-the second support tube, 5-determine power ring, 6-base, 7-energy-absorbing core body, 8-tabula rasa, 9-convex board, 10-boss, 11-circular groove, 12-prominent eaves block, the 13-the first cylindrical boss, the 14-the second cylindrical boss.
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, a kind of mining constant-resistance allows presses energy-absorbing erosion control suspension device, comprise top cover 1, first support tube 2, second support tube 4, base 6, locating ring 3 and determine power ring 5, described top cover 1 is connected by screw thread with the upper end of the first support tube 2, the lower end of the first support tube 2 coordinates with the upper-end contact of the second support tube 4, and the lower end of the second support tube 4 is connected by screw thread with base 6; Energy-absorbing core body 7 is installed between top cover 1 and base 6; It is outside that described locating ring 3 is sleeved on the first support tube 2, and with the upper end Joint of the second support tube 4 outer tube wall; The described power of determining ring 5 is fixedly set in the middle and lower part of the second support tube 4 outer tube wall.
As shown in Figure 2,3, described first support tube 2 is set to cylinder barrel shaped structure, and the lower end of the first support tube 2 outer tube wall is provided with boss 10 everywhere, and boss 10 is circumferentially uniformly distributed at the first support tube 2 outer tube wall everywhere.
As shown in Figure 4,5, 6, described second support tube 4 is set to cylinder barrel shaped structure, and the barrel of the second support tube 4 is set to grating structure, is provided with eight screens altogether, and adjacent two screens set gradually as tabula rasa 8 and convex board 9, second support tube 4 barrel lower end are set to integrative-structure; The middle and upper part of tabula rasa 8 external surface is provided with screw thread, the middle and lower part of convex board 9 external surface is provided with screw thread; The upper end of convex board 9 inner surface is provided with boss 10, and the boss 10 of convex board 9 is corresponding with the boss 10 of the first support tube 2; Described tabula rasa 8 width is in a circumferential direction greater than convex board 9 width in a circumferential direction, and tabula rasa 8 length is in the axial direction greater than convex board 9 length in the axial direction.
As shown in Figure 7,8, the lower surface of described locating ring is provided with four pieces of prominent eaves blocks 12, and prominent eaves block 12 is uniformly distributed in a circumferential direction, and the inner surface of prominent eaves block 12 is provided with screw thread, and the screw thread of described prominent eaves block 12 matches with the screw thread of tabula rasa 8 external surface; Described prominent eaves block 12 width in a circumferential direction, is greater than convex board 9 width in a circumferential direction and is less than tabula rasa 8 width in a circumferential direction.
As shown in Fig. 1,9, the center, lower surface of described top cover 1 is provided with the first cylindrical boss; Described energy-absorbing core body 7 is set to cylinder barrel shaped structure, and the lower end barrel of energy-absorbing core body 7 adopts Eversible structure; The center, upper surface of described base 6 is provided with the second cylindrical boss, and the base 6 of the second cylindrical boss side is provided with circular groove 11; The upper end of described energy-absorbing core body 7 is connected by the first cylindrical boss with top cover 1, and the lower end of energy-absorbing core body 7 is connected by the second cylindrical boss with base 6, and the Eversible structure of energy-absorbing core body 7 lower end is corresponding with the circular groove 11 of base 6.
As shown in Figure 1, the inner surface of the described power of determining ring 5 is provided with screw thread, determines power ring 5 and is matched with the screw thread of convex board 9 external surface by the screw thread of its inner surface.
Below in conjunction with accompanying drawing, a use procedure of the present invention is described:
The present invention is applied in coal mine roadway, and with hydraulic support with the use of.
In the present embodiment, top cover 1, base 6, first support tube 2, locating ring 3 and determine power ring 5 and all adopt the material of high rigidity (concrete material selection low-alloy super-strength steel or PH stainless steel), second support tube 4 adopts intensity and elasticity material (concrete material selection spring steel) all preferably, and energy-absorbing core body 7 adopts metal material (the concrete material selection E that intensity is high, toughness is high and ductility is good
p/ Y=3.5 or E
pthe thin-wall steel pipe of/Y=5.5, wherein E
pfor linear strain-hardening modulus, Y is yield strength; And the ratio range of the external diameter R of the wall thickness d of thin-wall steel pipe and steel cylinder is 0.02≤d/R≤0.1).
Assemble the mining constant-resistance of one of the present invention and allow pressure energy-absorbing erosion control suspension device.First energy-absorbing core body 7 lower end is sleeved on the second cylindrical boss 14 of base 6, Eversible structure with seasonal energy-absorbing core body 7 lower end is positioned at circular groove 11, then the second support tube 4 was overlapped energy-absorbing core body 7, its lower end and base 6 is made to be linked together by screw threads for fastening, again the first support tube 2 was overlapped energy-absorbing core body 7, the boss 10 of its lower end is made to contact with the boss 10 on the second support tube 4 convex board 9, the first support tube 2 is made to be placed on the second support tube 4, now locating ring 3 was overlapped the first support tube 2, make locating ring 3 together with the second support tube 4 tabula rasa 8 screw threads for fastening by the prominent eaves block 12 of locating ring 3, and make in the space of convex board 9 between two prominent eaves blocks 12, stabilize the first support tube 2 simultaneously, then the first cylindrical boss of top cover 1 is embedded in the cylindrical shell of energy-absorbing core body 7 upper end, with seasonal top cover 1 together with the first support tube 2 screw threads for fastening, finally be fixed on outside the second support tube 4 by determining power ring 5 by screw thread, now assembly working is complete.
According to the bearing capacity of setting load and working resistance determination suspension device of the present invention, the upper and lower position of power ring 5 outside the second support tube 4 is determined by regulating, just can realize the size regulating suspension device bearing capacity of the present invention, in the present embodiment, bearing capacity is set as the rated value of the flow valve in hydraulic prop.
To assemble and set the suspension device of the present invention of bearing capacity, being installed on upper end or the lower end of hydraulic prop, and by top cover 1 or base 6 and hydraulic prop Joint.
Under quasi-static pressure, by top cover 1, base 6, first support tube 2, second support tube 4, locating ring 3 and the combining structure of determining power ring 5, bear axial load effect; When bump occurs, when running into that in hydraulic prop, the pressure of flow valve has exceeded the rated value of flow valve, the stop that now boss 10 of the first support tube 2 of suspension device of the present invention can break through the second support tube 4 boss 10 is taken advantage of a situation decline, top cover 1 is under the promotion of impact force simultaneously, impel energy-absorbing core body 7 rapid deformation (barrel turns up fast), to realize stepping down fast and energy-absorbing, the percussion that relieving hydraulic pillar is subject to, can avoid hydraulic prop and related supporting thereof that runaway destruction occurs.
Claims (6)
1. a mining constant-resistance allows and presses energy-absorbing erosion control suspension device, it is characterized in that: comprise top cover, the first support tube, the second support tube, base, locating ring and determine power ring, described top cover is connected by screw thread with the upper end of the first support tube, the lower end of the first support tube coordinates with the upper-end contact of the second support tube, and the lower end of the second support tube is connected with base by thread; Energy-absorbing core body is installed between top cover and base; It is outside that described locating ring is sleeved on the first support tube, and with the upper end Joint of the second support tube outer tube wall; The described power of determining ring is fixedly set in the middle and lower part of the second support tube outer tube wall.
2. the mining constant-resistance of one according to claim 1 allows and presses energy-absorbing erosion control suspension device, it is characterized in that: described first support tube is set to cylinder barrel shaped structure, the lower end of the first support tube outer tube wall is provided with some boss, and boss is circumferentially uniformly distributed at the first support tube outer tube wall.
3. the mining constant-resistance of one according to claim 2 allows and presses energy-absorbing erosion control suspension device, it is characterized in that: described second support tube is set to cylinder barrel shaped structure, the barrel of the second support tube is set to grating structure, adjacent two screens set gradually as tabula rasa and convex board, and the second supporting cylinder wall lower end is set to integrative-structure; The middle and upper part of tabula rasa external surface is provided with screw thread, the middle and lower part of convex board external surface is provided with screw thread; The upper end of convex board inner surface is provided with boss, and the boss of convex board is corresponding with the boss of the first support tube; Described tabula rasa width is in a circumferential direction greater than convex board width in a circumferential direction, and tabula rasa length is in the axial direction greater than convex board length in the axial direction.
4. the mining constant-resistance of one according to claim 3 allows and presses energy-absorbing erosion control suspension device, it is characterized in that: the lower surface of described locating ring is provided with some prominent eaves blocks, prominent eaves block is uniformly distributed in a circumferential direction, the inner surface of prominent eaves block is provided with screw thread, and the screw thread of described prominent eaves block matches with the screw thread of tabula rasa external surface; Described prominent eaves block width in a circumferential direction, is greater than convex board width in a circumferential direction and is less than tabula rasa width in a circumferential direction.
5. the mining constant-resistance of one according to claim 3 allows and presses energy-absorbing erosion control suspension device, it is characterized in that: the inner surface of the described power of determining ring is provided with screw thread, determines power ring and matched with the screw thread of convex board external surface by the screw thread of its inner surface.
6. the mining constant-resistance of one according to claim 1 allows and presses energy-absorbing erosion control suspension device, it is characterized in that: the center, lower surface of described top cover is provided with the first cylindrical boss; Described energy-absorbing core body is set to cylinder barrel shaped structure, and the lower end barrel of energy-absorbing core body adopts Eversible structure; The center, upper surface of described base is provided with the second cylindrical boss, and the base of the second cylindrical boss side is provided with circular groove; The upper end of described energy-absorbing core body is connected by the first cylindrical boss with top cover, and the lower end of energy-absorbing core body is connected by the second cylindrical boss with base, and the Eversible structure of energy-absorbing core body lower end is corresponding with the circular groove of base.
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| CN201310258013.4A CN103321660B (en) | 2013-06-25 | 2013-06-25 | Mining constant-resistance yielding energy-absorbing impact-resisting supporting device |
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| CN201310258013.4A CN103321660B (en) | 2013-06-25 | 2013-06-25 | Mining constant-resistance yielding energy-absorbing impact-resisting supporting device |
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| CN103321660A CN103321660A (en) | 2013-09-25 |
| CN103321660B true CN103321660B (en) | 2015-04-22 |
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| CN103541747B (en) * | 2013-10-10 | 2015-08-19 | 辽宁工程技术大学 | A kind of flower shape thin-walled energy-absorbing erosion control suspension device |
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| CN110307022B (en) * | 2019-07-16 | 2024-03-08 | 北京诚田恒业煤矿设备有限公司 | Anti-crease deformation constant-resistance energy absorbing device |
| CN112648332A (en) * | 2020-12-03 | 2021-04-13 | 北京科技大学 | Spherical cell hole ladder-shaped deformation ore pressure controller and method |
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