CN203925533U - A kind of energy-absorption bracket of unidirectional backboard - Google Patents

A kind of energy-absorption bracket of unidirectional backboard Download PDF

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Publication number
CN203925533U
CN203925533U CN201420383268.3U CN201420383268U CN203925533U CN 203925533 U CN203925533 U CN 203925533U CN 201420383268 U CN201420383268 U CN 201420383268U CN 203925533 U CN203925533 U CN 203925533U
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CN
China
Prior art keywords
energy
unidirectional
lower bolster
padding plate
upper padding
Prior art date
Application number
CN201420383268.3U
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Chinese (zh)
Inventor
朱林学
Original Assignee
朱林学
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Application filed by 朱林学 filed Critical 朱林学
Priority to CN201420383268.3U priority Critical patent/CN203925533U/en
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Publication of CN203925533U publication Critical patent/CN203925533U/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14Lining predominantly with metal
    • E21D11/15Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members

Abstract

An energy-absorption bracket for unidirectional backboard, belongs to colliery tunnel support technical field, is mainly used in the U shape steel bracket in the bump mine stope drift active workings of deep.The energy-absorption bracket of a kind of unidirectional backboard of the utility model device, comprise upper padding plate, energy-absorbing post, lower bolster, air pressure erosion control cylinder, snap ring, connecting rod and energy-absorbing tie-beam, at upper padding plate, can hinder with being provided with in the middle of lower bolster the unidirectional constriction device that lower bolster goes motion mutually, described unidirectional constriction device comprises sheath.The utlity model has the features such as intensity is high, corrosion resistance, at moving load condition, can step down fast, energy-absorbing, safe and reliable.

Description

A kind of energy-absorption bracket of unidirectional backboard

Technical field

The utility model belongs to colliery tunnel support technical field, relates to a kind of energy-absorption bracket of unidirectional backboard, is mainly used in the U shape steel bracket defense of resistance to impact in the bump mine stope drift active workings of deep.

Background technology

At present, the erosion control of Deep Mine stope drift active workings supporting mainly relies on support protection, and the supporting and protection structure that existing U-shaped steel bracket forms is fairly simple, supporting capacity is large, have that the resistance of increasing speed is fast, supporting intensity is high and contractibility advantages of higher, be widely used in that roadway surrounding rock is unstable, deflection is large, be subject to dynamic pressure to affect larger stope of coal mines tunnel, it has overcome the not collapsible shortcoming of rigid support.Continuous increase along with the pit mining degree of depth, roadway bump ground pressure waits dynamic phenomenon to increase, and when bump occurs, discharges a large amount of impact energys, these energy propagate in the supporting and protection structure of U shape steel bracket formation by medium with the form of shock wave, and it is produced to strong impact failure.This supporting and protection structure that just requires U shape steel bracket to form not only can be born powerful country rock static load, more want it to withstand shocks and press the high speed of generation, strong dynamic load, and the supporting and protection structure impact resistance that existing U shape steel bracket forms is poor, and the connected mode of the overlap joint that it adopts cannot accomplish to shrink fast release, therefore be difficult to accomplish the release of stepping down fast, the energy discharging in generating process is pressed on impact-absorbing ground in time, is therefore difficult to effectively resist the high-strength dynamic load that bump produces.

In order to protect U shape steel bracket; the energy-absorbing erosion control backboard of a Chinese patent CN201310489010 support, discloses a kind of energy-absorbing erosion control backboard, between U shape steel bracket back timber and roadway surrounding rock; there is the features such as intensity is high, corrosion resistance, at moving load condition, can step down fast, energy-absorbing.When there is weak impact, this device utilizes the Fast Compression of air pressure erosion control gas in the jar and safety valve release to discharge overload pressure, realizes energy-absorbing by bit function, and while guaranteeing weak impact, the supporting bearing capacity of support within can tolerance range, makes support avoid destroying; In thump ground Hair Fixer raw moment, the gas in air pressure erosion control cylinder is by Fast Compression, the energy-absorbing post energy-absorbing of stepping down fast, energy-absorbing tie-beam distortion energy-absorbing, and tapered sleeve extruding tensioner ring strengthens its energy absorption ability, consumes shock wave energy, and protective cradle exempts from impact failure.

But must have impact repeatedly at complicated tunnel work condition environment, and the disclosed energy-absorbing backboard of this patent context after bearing repeatedly strong and weak different impact must change, cause backboard resilience, country rock arround reverse impact, cause country rock to become loose, so repeatedly, the security incident that repeats that resilience is caved in arround causing most probably etc.

Utility model content

For the defect of existing energy-absorbing erosion control backboard, the technical problems to be solved in the utility model is: a kind of energy-absorption bracket of unidirectional backboard is provided, at moving load condition, can steps down fast, energy-absorbing, and unidirectional contraction, safe and reliable.

Solving the technical scheme that its technical problem takes is: the energy-absorption bracket that designs a kind of unidirectional backboard, comprise upper padding plate, energy-absorbing post, lower bolster, air pressure erosion control cylinder, snap ring, connecting rod and energy-absorbing tie-beam, it is characterized in that: at upper padding plate, can hinder with being provided with in the middle of lower bolster the unidirectional constriction device that lower bolster goes motion mutually, described unidirectional constriction device comprises sheath, unidirectional constriction device upper and lower side connects respectively upper padding plate and lower bolster by rotating shaft, described unidirectional constriction device comprises sliding panel and limiting card, limiting card is for the retraction of limit slippage plate, described sliding panel arranges continuous draw-in groove, described limiting card comprises limit shaft, elastic limit bit slice, positive stop key, lever and spanner, comprise the rigid slab with outstanding sawtooth being connected on upper padding plate and lower bolster, wherein, the sawtooth that is connected to the rigid slab of upper padding plate is inclined upwardly, the sawtooth of rigid slab that is connected to lower bolster is downward-sloping, be in the other direction and arrange with the sawtooth that is connected to the rigid slab of upper padding plate, comprise the rigid slab with the contrary ledge of projected direction being connected on upper padding plate and lower bolster, wherein, the ledge that is connected to the rigid slab of upper padding plate is inclined upwardly outstanding, downward-sloping the giving prominence to of ledge that is connected to the rigid slab of lower bolster, is in the other direction and arranges with the ledge that is connected to the rigid slab of upper padding plate.

The beneficial effect that the utility model is obtained is:

Utilize these apparatus and method, energy-absorbing backboard is in compressed process, absorb most of impact energy, significantly reducing effect is to the impact energy on U-shaped steel bracket, the load of guarantee effect on U shape steel bracket is within it can tolerance range, and after impacting, the unidirectional constriction device that energy-absorbing backboard is carried is locked, can repeatedly not repeating resilience, to cause that country rock rocks loose, thereby guarantee stability of the roadway and safety.

After roadway surrounding rock pinch shock, upper lower bolster issues in energy-absorbing post impetus the motion that looks is gone direction, drives unidirectional constriction device, by upper lower bolster go mutually move locked.

Accompanying drawing explanation

Below in conjunction with drawings and the embodiments, the utility model is described in further detail:

Fig. 1 is jacket structure schematic diagram

Fig. 2 is sliding panel structural representation

Fig. 3 bit-sloice architecture schematic diagram that is limited

Fig. 4 is limiting clamp structure schematic diagram

Fig. 5 is for being with flexible sawtooth support overall schematic

Fig. 6 is with limiting card support overall schematic

Fig. 7 is sliding panel and limiting clamp structure schematic diagram

In figure: unidirectional constriction device 11 sliding panel 12 limiting card 13 draw-in groove 14 limit shaft 15 elastic limit bit slice 16 positive stop key 17 lever 18 spanner 19 rotating shaft 20 sheath 21 rubber cushions of 9 times rigid slab 10 of rigid slab on 1 upper padding plate 2 energy-absorbing post 3 connecting rod 4 energy-absorbing tie-beam 5 lower bolster 6 air pressure erosion control cylinder 7 snap rings 8.

The specific embodiment

Embodiment 1

As shown in the figure, a kind of energy-absorption bracket of unidirectional backboard, upper padding plate 1, energy-absorbing post 2, lower bolster 5, air pressure erosion control cylinder 6, snap ring 7, connecting rod 3 and energy-absorbing tie-beam 4, can hinder with being provided with in the middle of lower bolster 5 the unidirectional constriction device 10 that lower bolster goes motion mutually at upper padding plate 1, and described unidirectional constriction device 10 comprises sheath 20; Unidirectional constriction device 10 upper and lower sides connect respectively upper padding plate 1 and lower bolster 5 by rotating shaft 19, described unidirectional constriction device 10 comprises sliding panel 11 and limiting card 12, limiting card 12 is for the retraction of limit slippage plate 11, described sliding panel 11 arranges continuous draw-in groove 13, and described limiting card 12 comprises limit shaft 14, elastic limit bit slice 15, positive stop key 16, lever 17 and spanner 18.

Subsurface environment is severe, and dust granules foreign material are more, enters unidirectional constriction device 10 and can damage internal construction, hinders the proper motion of sliding panel 10; Described sheath 20 is set, can effectively carries out internal Protection; The assembling mode that sheath 20 adopts both sides to fasten, easily splits and carries out internal cleaning, and rubber cushion 21 stops particle to pour into from top.

Limit shaft 14, elastic limit bit slice 15, positive stop key 16, spanner 18 are fixed together, the rotation of limit shaft 14 drives elastic limit bit slice 15 to rotate, positive stop key 16 is the point edge of elastic limit bit slice 15, this point edge is positive stop key 16, the width of positive stop key 16 matches with the width of draw-in groove 13, and lever 17 is for limiting the rotation of elastic limit bit slice 15.The utility model is positioned between U shape steel bracket back timber and roadway surrounding rock, left and right two lower bolsters 5 are placed on respectively on adjacent two U shape steel brackets, when roadway surrounding rock Slow Deformation, roadway surrounding rock acts on upper padding plate 1 of the present utility model, compressing upper padding plate 1 moves down, sliding panel 11 moves downward, positive stop key 16 snaps in draw-in groove 13, draw-in groove 13 limit slippage plate 11 retractions, when sliding panel 11 continues to move downward, described sliding panel 11 arranges continuous draw-in groove 13, and positive stop key 16 snaps in next draw-in groove 13.Distance between upper padding plate 1 and lower bolster 5 only can unidirectionally be dwindled like this, can resilience.

When retracting to a certain degree, pull spanner 18, limit shaft 14 drives banking stop 15 to rotate, positive stop key 16 is deviate from from draw-in groove 13, sliding panel 11 is bounced back, and slides into suitable draw-in groove position positive stop key 16 and again enters draw-in groove 13, and upper padding plate 1 is returned to not pressured state.

Described elastic limit bit slice 15 seals the slip entrance of sliding panel 11 under self elastic force effect, the entrance that accesses rear encloseds when sliding panel 11 is rushed to open, elastic limit bit slice 15 is being oppressed draw-in groove one band of sliding panel 11, 11 of sliding panels are allowed to glide and cannot be bounced back by draw-in groove 13 lockings, comprise spanner 18, distance between upper padding plate 1 and lower bolster 5 continues to dwindle, need to loosen sliding panel 11, while allowing sliding panel 11 and upper padding plate 1 reinstatement, rotating spanner 18, spanner 18 drives elastic limit bit slice 15 to rotate, positive stop key 16 is deviate from from draw-in groove 13, pinning spanner 18 does not put, the retraction of sliding panel 11 is no longer hindered, be able to release.

Its shaft 19 plays unidirectional constriction device 10 can go up the effect that lower bolster tilts relatively, can be because of the displacement of upper lower bolster horizontal direction the internal construction of breaking plant, needn't be strict with the angle of unidirectional constriction device 10 and upper lower bolster.

Wherein, limit shaft 14 plays the effect of reinforcing banking stop 15 simultaneously, and the rotation amplitude of banking stop 15 is controlled and limited to lever 17.

Embodiment 2

As shown in the figure, a kind of energy-absorption bracket of unidirectional backboard, comprises left and right upper padding plate 1, left and right energy-absorbing post 2, left and right lower bolster 5, left and right air pressure erosion control cylinder 6, left and right snap ring 7, connecting rod 3 and energy-absorbing tie-beam 4, be connected to upper rigid slab 8 and lower rigid slab 9 with outstanding sawtooth on upper padding plate 1 and lower bolster 5, wherein, the sawtooth of rigid slab 8 is inclined upwardly, the sawtooth of rigid slab 9 is downward-sloping, with rigid slab 8 sawtooth opposite direction above.

The utility model is positioned between U shape steel bracket back timber and roadway surrounding rock; left and right two lower bolsters 5 are placed on respectively on adjacent two U shape steel brackets; when roadway surrounding rock Slow Deformation; roadway surrounding rock acts on upper padding plate 1 of the present utility model; compressing upper padding plate 1 moves down; to roadway surrounding rock, provide the deformation space of stepping down, avoid self bearing excess pressure and damaging; When occur impacting, because gas has good compressibility, during impact, in cylinder body, gas is by Fast Compression, and impact-absorbing can and provide and allows bit space, for country rock provides the deformation space of stepping down.Simultaneously with the upper rigid slab 8 of zigzag projection, lower rigid slab 9 is because of sawtooth opposite direction and carry out close relative motion mutually, rigid slab occurs along direction dislocation displacement.

After impacting, impact force is eliminated, pressure in cylinder starts to promote upper padding plate 1 and outwards to extruding country rock direction, moves, now go up rigid slab 8, lower rigid slab 9 by occur mutually away from relative motion, because the sawtooth of upper and lower rigid slab be opposite direction, now sawtooth is intermeshing, locked whole energy-absorbing back board device, and upper padding plate 1 no longer resilience moves.Can active force in the other direction not occur to country rock arround device, the country rock of avoiding repeated stock to cause loosens, collapses.

Those skilled in that art it should be understood that the structure design that the conception based on this patent is easily expected and realized, and the apparatus and method that can reach multipurpose, all within the protection domain of this patent.

Claims (7)

1. the energy-absorption bracket of a unidirectional backboard, comprise upper padding plate, energy-absorbing post, lower bolster, air pressure erosion control cylinder, snap ring, connecting rod and energy-absorbing tie-beam, it is characterized in that: at upper padding plate, can hinder with being provided with in the middle of lower bolster the unidirectional constriction device that lower bolster goes motion mutually, described unidirectional constriction device comprises sheath.
2. according to the energy-absorption bracket of a kind of unidirectional backboard described in claim 1, it is characterized in that: unidirectional constriction device upper and lower side connects respectively upper padding plate and lower bolster by rotating shaft.
3. according to the energy-absorption bracket of a kind of unidirectional backboard described in claim 1 or 2, it is characterized in that: described unidirectional constriction device comprises sliding panel and limiting card, limiting card is for the retraction of limit slippage plate.
4. according to the energy-absorption bracket of a kind of unidirectional backboard described in claim 3, it is characterized in that: described sliding panel arranges continuous draw-in groove.
5. according to the energy-absorption bracket of a kind of unidirectional backboard described in claim 3, it is characterized in that: described limiting card comprises limit shaft, elastic limit bit slice, positive stop key, lever and spanner.
6. according to the energy-absorption bracket of a kind of unidirectional backboard described in claim 1 or 2, it is characterized in that: comprise the rigid slab with outstanding sawtooth being connected on upper padding plate and lower bolster, wherein, the sawtooth that is connected to the rigid slab of upper padding plate is inclined upwardly, the sawtooth of rigid slab that is connected to lower bolster is downward-sloping, is in the other direction and arranges with the sawtooth that is connected to the rigid slab of upper padding plate.
7. according to the energy-absorption bracket of a kind of unidirectional backboard described in claim 1 or 2, it is characterized in that: comprise the rigid slab with the contrary ledge of projected direction being connected on upper padding plate and lower bolster, wherein, the ledge that is connected to the rigid slab of upper padding plate is inclined upwardly outstanding, downward-sloping the giving prominence to of ledge that is connected to the rigid slab of lower bolster, is in the other direction and arranges with the ledge that is connected to the rigid slab of upper padding plate.
CN201420383268.3U 2014-07-12 2014-07-12 A kind of energy-absorption bracket of unidirectional backboard CN203925533U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420383268.3U CN203925533U (en) 2014-07-12 2014-07-12 A kind of energy-absorption bracket of unidirectional backboard

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201420383268.3U CN203925533U (en) 2014-07-12 2014-07-12 A kind of energy-absorption bracket of unidirectional backboard
PCT/CN2014/086252 WO2016008207A1 (en) 2014-07-12 2014-09-11 Energy absorbing bracket with one-way back board

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CN203925533U true CN203925533U (en) 2014-11-05

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WO (1) WO2016008207A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016008205A1 (en) * 2014-07-12 2016-01-21 朱林学 One-way retracting flexible support
WO2016008206A1 (en) * 2014-07-12 2016-01-21 朱林学 One-way retracting energy-absorbing support

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB711052A (en) * 1951-04-25 1954-06-23 Victor Gallafent Assembly for lining the walls of mine galleries
DE1101322B (en) * 1956-04-20 1961-03-09 Wilhelm Reppel With deformation of compliant default for the steel roadway support
DE1113674B (en) * 1958-05-17 1961-09-14 Hemscheidt Maschf Hermann Default sheet for expansion caps with I-profile, in particular for the scope of expansion
FR2053799A5 (en) * 1969-07-18 1971-04-16 Gescoriac
DE2901023C3 (en) * 1979-01-12 1981-09-10 Bochumer Eisenhuette Heintzmann Gmbh & Co, 4630 Bochum, De
JP2001262988A (en) * 2000-03-22 2001-09-26 Nippon Steel Corp Tunnel support method and tunnel support structure
CN103541746B (en) * 2013-10-16 2015-10-14 辽宁工程技术大学 A kind of energy-absorbing erosion control backboard of support

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016008205A1 (en) * 2014-07-12 2016-01-21 朱林学 One-way retracting flexible support
WO2016008206A1 (en) * 2014-07-12 2016-01-21 朱林学 One-way retracting energy-absorbing support

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GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141105

Termination date: 20150712