CN110410115A - A kind of column pressure adaptive regulator control system - Google Patents
A kind of column pressure adaptive regulator control system Download PDFInfo
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- CN110410115A CN110410115A CN201910661380.6A CN201910661380A CN110410115A CN 110410115 A CN110410115 A CN 110410115A CN 201910661380 A CN201910661380 A CN 201910661380A CN 110410115 A CN110410115 A CN 110410115A
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- resorption
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- 230000003044 adaptive effect Effects 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 45
- 230000008859 change Effects 0.000 claims abstract description 7
- 238000005336 cracking Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 3
- 230000008093 supporting effect Effects 0.000 description 10
- 238000005086 pumping Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
- E21D15/45—Hydraulic, pneumatic, or hydraulic-pneumatic props having closed fluid system, e.g. with built-in pumps or accumulators
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A kind of column pressure adaptive regulator control system, including manipulation valve, hydraulic control one-way valve, sequence valve, safety valve, hydraulic directional valve, column, liquid feeding pipeline P and liquid back pipe road O；Just when supportting, column cavity of resorption and upright post upper cavity communicate column with liquid feeding pipeline P, and Support Resistance is lower when column initialization；When column works normally, upright post upper cavity is communicated with liquid feeding pipeline P, and column cavity of resorption increases with outer load and increased due to fluid-control one-way valve action, lower cavity pressure；When cavity pressure reaches setting numerical value under column, sequence valve events, hydraulic directional valve commutation, upright post upper cavity are communicated with liquid return hole O, column Support Resistance increases with outer load and is increased, when cavity pressure reaches safety valve setting pressure under column, safety valve is opened, and column Support Resistance reaches yield load, realize that column setting load is lower, working resistance is higher, and Support Resistance amplitude of variation is big, while having the purpose according to load change adjust automatically Support Resistance.
Description
Technical field
The present invention relates to a kind of column pressure adaptive regulator control systems, are used for coal mine work area tunnel advanced hydraulic support branch
Shield.
Background technique
Before illustrating particular technique, illustrate the meaning of following three vocabulary first.
Setting load: Support Resistance when column initialization.
Column the first minor peaks Support Resistance: column Support Resistance achieved when hydraulicdirectional control valve commutation action.
Column the second minor peaks working resistance: column Support Resistance achieved when column cavity of resorption safety valve is opened.
Back pressure: pressure of the liquid feeding pipeline in the case where returning liquid cutout valve, generally in 2MPa or so.
Advanced hydraulic support is used for underground coal mine roadway workface advance support, and advanced hydraulic support is asked there are following at present
Topic.
1. if when hydraulic moving stand, moving frame process central post and dropping column, setting prop repeatedly, repeatedly to top plate setting load is excessively high
Load, unloading, easily cause roof destruction since setting load is larger.
2. reducing column cylinder diameter, support setting load is reduced, but as column cylinder diameter reduces, working resistance also subtracts therewith
Small, when tunnel is to press, advance timbering working resistance is inadequate, is unable to satisfy roadway support needs.
How to realize that advanced hydraulic support setting load is smaller, working resistance is higher, and Support Resistance can become according to load
Change is adjusted automatically, is current advance timbering problem in the urgent need to address.
It invents 201410651503.5 and discloses a kind of non-equal strong supportings control method of advanced hydraulic support, it can by setting
Mode pressure reducing valve realizes that advanced hydraulic support is non-and waits strong supportings.There are problem, advance timbering pressure does not have automatic adjusument energy
Power, the pressure setting of pressure reducing valve have to be manually adjusted according to the advanced mine pressure impression data of exploitation process, are difficult to accomplish to surpass
Preceding Support Resistance and tunnel actual pressure are distributed real-time matching, cannot achieve the adaptive supporting of advance timbering supporting.
Summary of the invention
The technical problem to be solved by the present invention is to how overcome the defect in the prior art, realize that advanced hydraulic support just supports
Power is smaller, working resistance is higher, and Support Resistance can provide a kind of advanced hydraulic support use according to load change adjust automatically
Column pressure adaptive regulator control system.
Technical solution: the present invention provides a kind of column control system, and sequence valve (3) and hydraulic directional valve is arranged in system
(5), when column just supports, column cavity of resorption (7) and upright post upper cavity (8) are communicated with liquid feeding pipeline P, and column setting load is lower；Column is just
Often when work, upright post upper cavity (8) is communicated with liquid feeding pipeline P, and the pressure of column cavity of resorption (7) increases with outer load and increased, under column
When chamber (7) pressure reaches setting pressure, sequence valve (3) movement, hydraulic directional valve (5) commutates, upright post upper cavity (8) and liquid return hole O
It communicating, column Support Resistance increases with it, when column cavity of resorption (7) pressure reaches safety valve (4) cracking pressure, safety valve (4)
It opens, column Support Resistance reaches yield load, realizes that the initial Support Resistance of column is lower, is provided simultaneously with and is become according to load
Change the purpose of adjust automatically Support Resistance.
Present invention tool has the advantage that.
(1) control system is simple, only perceives cavity pressure under column by sequence valve, is commutated by hydraulic directional valve, i.e.,
Achievable setting load is smaller and the biggish regulation purpose of working resistance.
(2) be easily achieved, without changing bracket and pillar construction, it is only necessary in existing control system be arranged sequence valve and
Hydraulic directional valve changes simultaneously manipulation valve with into the feed liquid way of, liquid return hole, can be realized.
(3) adaptive ability of regulation and control is had, and column becomes under the action of sequence valve and hydraulicdirectional control valve automatically according to load
Change and carry out pressure controlling, without human intervention, has adaptive tune control ability.
Detailed description of the invention
Fig. 1 is control system schematic diagram of the invention.
In figure, 1- manipulates valve, 2- hydraulic control one-way valve, 3- sequence valve, 4- safety valve, 5- hydraulic directional valve, 6- column, and 7- is vertical
Column cavity of resorption, 8- upright post upper cavity.
Fig. 2 is column pressure variation of the present invention.
In figure, when 1- upright post upper cavity is connected with pumping plant outlet pressure pipeline, column Support Resistance curve；2- upright post upper cavity with
When pumping plant liquid return hole pipeline communicates, column Support Resistance curve；P0Pump station pressure, P1Column when column first time surge pressure
Lower cavity pressure, P2Sequence valve operating pressure, PmaxOpening pressure of safety valve, F1When column upper and lower cavity is communicated with pumping plant supply opening
Column setting load, F1maxColumn Support Resistance, F when sequence valve events2Column supporting when upright post upper cavity is communicated with pumping plant liquid return hole
Resistance, F2maxColumn working resistance when upright post upper cavity is communicated with pumping plant liquid return hole, Δ Fmax=F2max-F1max。
Specific embodiment
The embodiment of the present invention is further described with reference to the accompanying drawing.
As shown in Figure 1, a kind of column pressure adaptive regulator control system, is mainly used for roadway workface advanced hydraulic support branch
Protect draught control, including reversal valve (1), hydraulic control one-way valve (2), sequence valve (3), safety valve (4), hydraulic directional valve (5), column
(6), column cavity of resorption (7), upright post upper cavity (8), liquid feeding pipeline P and liquid back pipe road O；When column just supports, reversal valve (1) is in A,
Column cavity of resorption (7) and upright post upper cavity (8) communicate with liquid feeding pipeline P, and column setting load is column cavity of resorption (7), upright post upper cavity (8)
Ring cavity difference in areas is multiplied by the liquid supply pressure of liquid feeding pipeline P, and Support Resistance is lower when column initialization, has reached the low just support of column
The purpose of power；When column drops in column (6), reversal valve (1) is in C, and upright post upper cavity (8) is communicated with liquid feeding pipeline P, column cavity of resorption
(7) it is communicated with liquid back pipe road O, hydraulic control one-way valve (2) is under the effect of upright post upper cavity (8) pressure, column cavity of resorption (7) and liquid back pipe road
O is communicated, and column drops in column (6), and since cavity pressure is smaller under column, sequence valve (3), hydraulic directional valve (5) are failure to actuate；Column is normal
When work, reversal valve (1) is in B, and upright post upper cavity (8) is communicated with liquid feeding pipeline P, and column cavity of resorption (7) is closed, column cavity of resorption
(7) pressure increases with outer load and is increased, when column cavity of resorption (7) pressure reaches setting pressure, sequence valve (3) movement, and commutation of surging
Valve (5) commutation, E mouthfuls of hydraulic directional valve (5) conductings, upright post upper cavity (8) are communicated with liquid return hole O, and column Support Resistance continues with outer
It carries and increases and increase；When column cavity of resorption (7) pressure reaches safety valve (4) setting pressure, safety valve (4) is opened, column supporting
Resistance reaches yield load, realizes that the initial Support Resistance of column is lower, is provided simultaneously with according to load change adjust automatically branch
Protect the purpose of resistance.
Fig. 2 show pressure when column increases resistance supporting and automatically switches principle, and curve 1 is upright post upper cavity and pumping plant outlet pressure
When pipeline is connected, column Support Resistance curve；When curve 2 is that upright post upper cavity is connected with pumping plant liquid return hole, column Support Resistance is bent
Line.
Hydraulic support just supports the stage, and the upper and lower chamber of column is connected with emulsion power pack outlet pressure pipeline, the upper and lower chamber of column
First bulging power is pump station pressure P0, column cavity of resorption supporting area S1, upright post upper cavity supporting area S2, column setting load；Column carrying
When, under load effect outside, cavity pressure P is continued to increase under column, by initial P0Increase to sequence valve setting pressure P2, i.e. (P2One
As than column opening pressure of safety valve PmaxLow 2MPa, i.e.), upright post upper cavity pressure is P always0, column Support Resistance is along curve 1
Real segment constantly increases (1 equation of curve)；When cavity pressure reaches P under column2When, sequence valve is opened, and hydraulic directional valve movement is stood
Column epicoele is communicated with liquid return hole, at this time cavity pressure under column, (for system back pressure)；Increase with rear column cavity of resorption pressure with outer load
And increase, column Support Resistance constantly increases (2 equation of curve) along 2 real segment of curve；When under column cavity pressure by P1Increase to
When opening pressure of safety valve, safety valve is opened, and column reaches working resistance.
By the above-mentioned means, column reaches maximum operation resistance by the peak value working resistance of curve 1, peak value power-assisted is realized,
Two peak value working resistances are poor.Switched by pressure, realizes smaller setting load and biggish working resistance supporting, Support Resistance
Amplitude of variation is big, and hydraulic support is adaptable.
Above-described embodiment is that effective embodiment of the invention is described, and is not limited the range of present aspect
Fixed, under the premise of not departing from design spirit of the invention, ordinary engineering and technical personnel is to the various modifications of the invention made and changes
Into should fall within the scope of protection determined by the claims of the present invention.
Claims (6)
1. a kind of column pressure adaptive regulator control system, including reversal valve (1), hydraulic control one-way valve (2), sequence valve (3), safety valve
(4), hydraulic directional valve (5), column (6), liquid feeding pipeline P and liquid back pipe road O；When column just supports, on column cavity of resorption (7), column
Chamber (8) is communicated with liquid feeding pipeline P, and Support Resistance is lower when column initialization；Column work normally when, upright post upper cavity (8) with
Liquid feeding pipeline P is communicated, and column cavity of resorption (7) increases with outer load and increased, when column cavity of resorption (7) pressure reaches setting pressure, sequence
Valve (3) movement, hydraulic directional valve (5) commutation, upright post upper cavity (8) are communicated with liquid return hole O, and column Support Resistance continues to increase with outer load
Add and increases；When column cavity of resorption (7) pressure reaches safety valve (4) cracking pressure, safety valve (4) is opened, column Support Resistance
Reach yield load, realizes that column setting load is lower, be provided simultaneously with the mesh according to load change adjust automatically Support Resistance
's.
2. reversal valve (1) is 3-position 4-way electro-hydraulic reversing valve according to the requirement of right 1, reversal valve (1) has A, B and the position C three
A commutation position；When column (6) just supports, reversal valve (1) is in A, column cavity of resorption (7) and upright post upper cavity (8) and liquid feeding pipeline P
It communicating, column setting load is the ring cavity difference in areas of column cavity of resorption (7) and upright post upper cavity (8) multiplied by the liquid supply pressure of liquid feeding pipeline P,
The setting load when Support Resistance is just supportted lower than current column, the low setting load of column are lower.
3. according to the requirement of right 1, when column (6) works normally, reversal valve (1) is in B, upright post upper cavity (8) and liquid supply pipe
Road P is communicated, and column cavity of resorption (7) can not return liquid, and column cavity of resorption (7) pressure increases with outer load and increased, when column cavity of resorption (7) pressure
When reaching setting pressure, sequence valve (3) movement, after hydraulic directional valve (5) receives signal, hydraulic directional valve (5) movement, column
Epicoele (8) is communicated with liquid back pipe road O, and the first minor peaks Support Resistance of column (6) is the pressure of column cavity of resorption (7) multiplied by column
The ring cavity area of cavity of resorption (7) subtracts upright post upper cavity (8) ring cavity area multiplied by system back pressure multiplied by the pressure of liquid feeding pipeline P.
4. hydraulic directional valve (5) is two-position four-way valve, and when column just supports, hydraulic directional valve (5) is in D according to the requirement of right 1
Position, upright post upper cavity (8) are communicated with liquid feeding pipeline P；When column cavity of resorption (7) pressure reaches setting pressure, sequence valve (3) movement,
After hydraulic directional valve (5) receives signal, when its pressure reaches hydraulic directional valve (5) setting pressure, at hydraulic directional valve (5)
In E, upright post upper cavity (8) is communicated with liquid feeding pipeline O.
5. when hydraulic directional valve (5) is in E, upright post upper cavity (8) is communicated with liquid feeding pipeline O, column according to the requirement of right 1
Support Resistance be that cavity pressure multiplied by column cavity of resorption (7) ring cavity area subtracts upright post upper cavity O ring cavity area multiplied by system under column
The Support Resistance of back pressure, column (6) is increased with the increase of outer load, is opened when the pressure of column cavity of resorption (7) reaches safety valve (4)
When pressure, safety valve (4) is opened, and (6) second minor peaks Support Resistance of column is column cavity of resorption (7) safety valve (4) cracking pressure
Upright post upper cavity ring cavity area is subtracted multiplied by system back pressure multiplied by column cavity of resorption (7) ring cavity area, and column (6) Support Resistance reaches volume
Determine working resistance, realizes that column setting load is lower, while according to the purpose of magnitude of load adjust automatically Support Resistance.
6. according to the requirement of right 1, when column drops in column (6), reversal valve (1) is in C, upright post upper cavity (8) and liquid feeding pipeline P phase
Logical, column cavity of resorption (7) is communicated with liquid back pipe road O, and hydraulic control one-way valve (2) is under the effect of upright post upper cavity (8) pressure, column cavity of resorption
(7) it is communicated with liquid back pipe road O, column drops in column (6), and since cavity pressure is smaller under column, sequence valve (3), hydraulic directional valve (5) are no
Movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910661380.6A CN110410115B (en) | 2019-07-22 | 2019-07-22 | Self-adaptive control system for pressure of stand column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910661380.6A CN110410115B (en) | 2019-07-22 | 2019-07-22 | Self-adaptive control system for pressure of stand column |
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| Publication Number | Publication Date |
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| CN110410115A true CN110410115A (en) | 2019-11-05 |
| CN110410115B CN110410115B (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910661380.6A Active CN110410115B (en) | 2019-07-22 | 2019-07-22 | Self-adaptive control system for pressure of stand column |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3991578A (en) * | 1974-04-10 | 1976-11-16 | Gullick Dobson Limited | Self-advancing mine roof supports |
| CN101205810A (en) * | 2007-12-13 | 2008-06-25 | 中煤北京煤矿机械有限责任公司 | Mining hydraulic support self-boosting system |
| CN201496335U (en) * | 2009-09-09 | 2010-06-02 | 四川神坤装备股份有限公司 | Automatic balancing valve |
| CN202611733U (en) * | 2012-04-11 | 2012-12-19 | 山西平阳重工机械有限责任公司 | Automatic pressurizing device used for support |
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-
2019
- 2019-07-22 CN CN201910661380.6A patent/CN110410115B/en active Active
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|---|---|---|---|---|
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| CN101205810A (en) * | 2007-12-13 | 2008-06-25 | 中煤北京煤矿机械有限责任公司 | Mining hydraulic support self-boosting system |
| CN201496335U (en) * | 2009-09-09 | 2010-06-02 | 四川神坤装备股份有限公司 | Automatic balancing valve |
| CN202611733U (en) * | 2012-04-11 | 2012-12-19 | 山西平阳重工机械有限责任公司 | Automatic pressurizing device used for support |
| CN102926788A (en) * | 2012-11-16 | 2013-02-13 | 无锡阳工机械制造有限公司 | Pressure regulation method for resistance-increasing and constant-resistance stages of hydraulic bracket |
| CN204226309U (en) * | 2014-10-30 | 2015-03-25 | 周文川 | The pneumatic supporting pressurization system in tunnel |
| CN104453970A (en) * | 2014-11-17 | 2015-03-25 | 天地科技股份有限公司 | Non-equal-strength supporting control method for fore hydraulic supports |
| CN105041362A (en) * | 2015-08-27 | 2015-11-11 | 三一重型装备有限公司 | Mining hydraulic support for replacing hydraulic media under pressure |
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| CN109854290A (en) * | 2019-03-07 | 2019-06-07 | 辽宁工程技术大学 | Advanced hydraulic support transverse and longitudinal is based on the non-equal strong supportings control method of fourier function |
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| CN110410115B (en) | 2020-11-17 |
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