CN101367484A - Double-stage braking hydraulic station with high-reliability scavenge oil and control method thereof - Google Patents
Double-stage braking hydraulic station with high-reliability scavenge oil and control method thereof Download PDFInfo
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- CN101367484A CN101367484A CNA2008100231087A CN200810023108A CN101367484A CN 101367484 A CN101367484 A CN 101367484A CN A2008100231087 A CNA2008100231087 A CN A2008100231087A CN 200810023108 A CN200810023108 A CN 200810023108A CN 101367484 A CN101367484 A CN 101367484A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 238000004146 energy storage Methods 0.000 claims description 35
- 230000017105 transposition Effects 0.000 claims description 16
- 230000008676 import Effects 0.000 claims description 6
- 239000002828 fuel tank Substances 0.000 claims description 5
- 230000015556 catabolic process Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000007257 malfunction Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 59
- 238000012423 maintenance Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000010338 mechanical breakdown Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention discloses an oil-return secondary braking hydraulic station with high reliability; a plurality of electromagnetic reversing valves are arranged on the pipeline that communicates an A-group braking gate and the heat accumulator and the hydraulic reversing valve; a permanent-opening adjustable throttling valve is arranged at the inlet pipe and the outlet pipe of the A-group braking gate, and a permanent-opening throttling valve is arranged at the inlet and the outlet of the B-group braking gate; the pipeline of the B-group braking gate is provided with two electromagnetic reversing valves that are communicated with an oil tank; the electromagnetic valves are provided with an on-line monitoring reversing position sensor. Through the multiple insurance braking valve, the braking gate can be reliably communicated with the heat accumulator; when the oil cannot be returned for the electromagnetic valves and the electric-liquid voltage-regulation device have malfunctions, the pressure oil is ensured to be returned to the oil tank through the permanent-opening throttling valves, thereby realizing the high-reliable oil-return brake of the secondary braking in the well while guaranteeing the normal braking. The hydraulic station has compact structure, is easy to be operated, is convenient to be repaired, has simple method, is safe and reliable, and has good braking effect, and has wide practicability.
Description
Technical field
The present invention relates to double-stage braking hydraulic station with high-reliability scavenge oil and control method thereof, be particularly useful for the high reliability oil return braking of colliery main equipment Winder Disk Brake, also be applicable to the braking of other Winder Disk Brake or band conveyor plate disc brake.
Background technology
The gig container is big at the high inertia of well medium velocity, two stage braking is the safety arrestment under this state, if all damper brakes are braked simultaneously the gig container are stopped suddenly, can cause steel rope to be subjected to excessive force of inertia and disconnected rope, serious grave accident such as skid take place, so the two stage braking in the well is particularly important.Realize that the two stage braking in the well has two types: a class two groups of damper brakes of A, B for adopting quantity to equate, the oil pressure of B group damper brake returns zero rapidly and realizes braking immediately, and A group damper brake is a two stage braking, promptly earlier oil pressure is dropped to the energy storage pressurize value P that sets up in advance
I, make A group damper brake produce the one-level braking force, again after one section time-delay, then with energy storage pressurize value P
IReduce to zero, make A group damper brake produce whole braking forces, realize two stage braking; Another kind ofly, A group and B realize two stage braking simultaneously for organizing whole damper brakes.No matter existing above-mentioned Hydraulic Station is any, it all is insecure that damper brake pressure oil and energy storage are connected, for example the patent No. is ZL 01217897.7 disclosed " electrical delay Hydraulic Station ", and the patent No. is CN 85 1 03780 A disclosed " hydraulic pressure time-delay Hydraulic Stations ", in case the solenoid directional control valve that is provided with between energy storage wherein and the damper brake breaks down in the time of can not replacing, then can not realize two stage braking, cause gig braking suddenly in well, cause taking place disconnected rope, serious grave accident such as skid.
Two-stage brake hydraulic station at present commonly used comprises by what oil pump 1 and electro-hydraulic pressure regulator device 3 were formed and two overlaps independently liquid feed device as shown in Figure 1, is switched by hydraulicchange-over valve 2, organizes damper brake 9 feed flows by hydraulicchange-over valve 2 to A group damper brake 8 and B.When guaranteeing the normal operation braking, realize two stage braking in braking of safety arrestment well head one-level and the well.During safety arrestment, oil pump 1 outage and stop control lever, solenoid directional control valve G3 outage, the rapid oil sump tank of pressure oil of B group damper brake 9 is realized braking fully.A group damper brake 8 pressure oils are connected by solenoid directional control valve G4 outage transposition and energy storage 7.If the gig container is in well head, its safety arrestment is the braking of well head one-level, and the pressure oil of A group damper brake by solenoid directional control valve 5 outages and solenoid directional control valve G6 energising transposition oil sump tank, reaches braking fully simultaneously.If the gig container is in the well, its safety arrestment is a two stage braking in the well, the energising of delay time of solenoid directional control valve G5 delay cut-off, solenoid directional control valve G6, and in time-delay during this period of time, A organizes the oil pressure maintenance energy storage pressurize value P of damper brake
I, reach the one-level braking force.After time-delay finished, by solenoid directional control valve 5 outages and solenoid directional control valve G6 energising oil sump tank, oil pressure was from energy storage pressurize value P simultaneously for the pressure oil of A group damper brake
IDrop to zero, reach braking fully.Though this two-stage brake hydraulic station can be realized two stage braking preferably, because damper brake oil return glancing impact, in case the transposition fault appears in solenoid directional control valve G3, especially holding is at midway location, this moment, the oil pressure of B group damper brake can not return zero, caused and can not brake, the generation that causes the accident; In addition, in case the transposition fault appears in solenoid directional control valve G4, A group damper brake 8 can not be connected with energy storage 7, causes realizing two stage braking; Solenoid directional control valve G5 and the solenoid directional control valve G6 of the pressure oil of A group damper brake through being arranged in parallel returns zero and can reach braking, look like double insurance, but in fact solenoid directional control valve G5 and solenoid directional control valve G6 are in operational process, one of them breaks down and can't find, and another breaks down and will cause accident to take place; Secondly, because safety arrestment seldom occurs, solenoid directional control valve G5 and solenoid directional control valve G6 seldom move, and idle for a long time, there was a mechanical failure easily.
Summary of the invention
Technical matters: the objective of the invention is at the problem that exists in the prior art, a kind of double-stage braking hydraulic station with high-reliability scavenge oil and control method thereof of avoiding the braking accident is provided.
Technical scheme: double-stage braking hydraulic station with high-reliability scavenge oil of the present invention, comprise oil pump, hydraulicchange-over valve, electro-hydraulic pressure regulator device, reducing valve, check valve, by pass valve, energy storage, A organizes damper brake, B group damper brake and solenoid directional control valve are provided with in described A group damper brake and pipeline that energy storage and hydraulicchange-over valve are connected and constitute a plurality of solenoid directional control valves that insure two stage braking valves road more; The import and export pipe place of A group damper brake is provided with and often opens adjustable throttling, and the import and export of B group damper brake is provided with often opens adjustable throttling; The pipeline of B group damper brake is provided with two solenoid directional control valves that communicate with fuel tank; Be equipped with on-line monitoring commutation position sensor on all solenoid directional control valves; A plurality of solenoid directional control valves that described formation is insured two stage braking valve road more are two or three.
The control method of double-stage braking hydraulic station with high-reliability scavenge oil of the present invention: during safety arrestment, outage of control electro-hydraulic pressure regulator device and oil pump outage,, solenoid directional control valve outage transposition, the pressure oil in the B group damper brake is respectively from electro-hydraulic pressure regulator device and solenoid directional control valve oil sump tank; The transposition of cutting off the power supply simultaneously of two or three solenoid directional control valves in the two stage braking of the many insurances of the control simultaneously valves road, connect A and organize damper brake and energy storage:
When cage is in well head, solenoid directional control valve outage commutation, the pressure oil in A group damper brake and the energy storage is finished safety arrestment from the solenoid directional control valve oil sump tank;
When cage is in the well, solenoid directional control valve time-delay pressurize, the oil pressure value of A group damper brake energy storage, finish the one-level braking, after the time-delay pressurize finishes, solenoid directional control valve outage transposition, the pressure oil in A group damper brake and the energy storage is finished safety arrestment from the solenoid directional control valve oil sump tank;
In braking procedure, when any one solenoid directional control valve et out of order, the on-line monitoring commutation position sensor that is arranged on the solenoid directional control valve spreads out of breakdown signal at once, do not influence gig just in operating braking this moment, but the control gig can not start, after treating that the solenoid directional control valve fault is discharged, gig can start; Described time-delay pressurize is less than 10 seconds.
Beneficial effect: the present invention is on the basis of existing two-stage brake hydraulic station, transform in its key position A group damper brake and the pipeline that energy storage and hydraulicchange-over valve are connected, added the safety precautions of a plurality of solenoid directional control valves that constitute many insurance two stage braking valves road, when making the oil return of damper brake pressure oil by many insurances brake activation valve road and energy storage reliably connect, commutation position to all solenoid directional control valves carries out on-line monitoring, realizes many insurance oil return functions.Cause guaranteeing damper brake pressure oil oil sump tank by often opening adjustable throttling can not oil return the time when solenoid directional control valve and electro-hydraulic pressure regulator device break down, when guaranteeing the normal operation braking, realize the high reliability oil return braking of two stage braking in the well.Its compact conformation, easy operating, easy to maintenance, method is simple, and is safe and reliable, and good braking effect has practicality widely.
Description of drawings
Fig. 1 is the two-stage brake hydraulic station scheme drawing of prior art.
Fig. 2 is two-stage brake hydraulic station example one scheme drawing of the present invention.
Fig. 3 is two-stage brake hydraulic station example two scheme drawings of the present invention.
Among the figure: oil pump-1, hydraulicchange-over valve-2, electro-hydraulic pressure regulator device-3, reducing valve-4, check valve-5, by pass valve-6, energy storage-7, A organizes damper brake-8, and B organizes damper brake-9, solenoid directional control valve G3～G6, often open adjustable throttling-10, often open adjustable throttling-11, insure two stage braking valve road-12 more, solenoid directional control valve G4～G10, pipeline-13,14,15.
The specific embodiment
The invention will be further described below in conjunction with the embodiment in the accompanying drawing:
Embodiment one, shown in Figure 2, two-stage brake hydraulic station comprises by what oil pump 1 and electro-hydraulic pressure regulator device 3 were formed and two overlaps independently liquid feed device, two cover liquid feed devices connect a hydraulicchange-over valve 2 that its row is switched, hydraulicchange-over valve 2 directly is connected with B group damper brake 9, the import and export of B group damper brake 9 be equipped with link to each other with fuel tank often open adjustable throttling 11, be parallel with two solenoid directional control valve G7, G8 that directly communicate on its pipeline, the sensor of on-line monitoring commutation position all is installed on solenoid directional control valve G7, the G8 with fuel tank.The sensor of on-line monitoring commutation position all is installed on be connected in series in A group damper brake 8 and the pipeline that energy storage 7 and hydraulicchange-over valve 2 are connected two solenoid directional control valve G4, the G9, two solenoid directional control valve G4, G9.The import and export pipe place of A group damper brake 8 be equipped with link to each other with fuel tank often open adjustable throttling 10; A group damper brake 8 and solenoid directional control valve G4, G9 conducting that hydraulicchange-over valve 2 is connected in series by pipeline 13 with solenoid directional control valve G4, the G9 conducting of energy storage 7 by being connected in parallel, are connected with by pass valve 6 on its pipeline; Be connected with reducing valve 4 on the pipeline 14 of energy storage 7, the entrance of reducing valve 4 is connected with check valve 5; A group damper brake 8, energy storage 7 and solenoid directional control valve G4, G9 constitute many insurance two stage braking valves road 12, A group damper brake 8 15 is connected with solenoid directional control valve G5 by the road, energy storage 7 is connected with solenoid directional control valve G6 by pipeline 14, and the sensor of on-line monitoring commutation position all is housed on solenoid directional control valve G5 and the solenoid directional control valve G6.
Embodiment two, shown in Figure 3, basic identical with embodiment one, just be connected three solenoid directional control valve G4, G9, G10 in A group damper brake 8 and the many insurances two stage braking valve road 12 that energy storage 7 and hydraulicchange-over valve 2 are connected, promptly constitute three insurance two stage braking valve roads, the sensor of on-line monitoring commutation position all is housed on solenoid directional control valve G4, G9, the G10.
The control method of two-stage brake hydraulic station of the present invention:
The normal operation glancing impact, control hydraulicchange-over valve 2 is to A group damper brake 8 and B group damper brake 9 feed flows, hydraulic oil divides two-way through hydraulicchange-over valve, one tunnel a solenoid directional control valve in two solenoid directional control valve G4, the G9 on many insurance two stage braking valves road 12 or three solenoid directional control valve G4, G9, G10 enters A group damper brake 8, and another road directly enters B group damper brake 9; The declutching and brake by oil pressure and control of B damper brake 9, the variation of oil pressure realizes by the size of current of control electro-hydraulic pressure regulator device 3; When A group damper brake 9 declutches, make operating oil pressure reach maxim, B group damper brake 9 combined floodgate glancing impacts make the electric current of electro-hydraulic pressure regulator device 3 be reduced to zero gradually, and pressure oil is through electro-hydraulic pressure regulator device 3 oil sump tanks.
During safety arrestment, oil pump 1 outage and stop control lever, 3 outages of control electro-hydraulic pressure regulator device, the pressure oil of B group damper brake 9 is through electro-hydraulic pressure regulator device 3 direct oil sump tanks, by solenoid directional control valve G7, solenoid directional control valve G8 outage transposition oil sump tank, reach the double insurance oil sump tank simultaneously; Two solenoid directional control valve G4, G9s or three solenoid directional control valve G4, G9, G10s simultaneously the cut off the power supply transposition of the pressure oil of A group damper brake 8 in many insurance two stage braking valves road 12, as long as wherein there is a solenoid directional control valve transposition correct, just can guarantee that A organizes damper brake 8 and reliably connects with energy storage 7, many insurance two stage braking valves road 12 all is in off-position when realizing safety arrestment, even having a power failure, full ore deposit also can brake the mechanical breakdown that to avoid solenoid directional control valve to occur simultaneously.Connect A group damper brake 8 and energy storage 7 backs:
When cage is in well head, solenoid directional control valve G5, the G6 transposition of cutting off the power supply, the pressure oil in A group damper brake 8 and the energy storage 7 is finished the well head safe braking from solenoid directional control valve G5, G6 oil sump tank;
When cage is in the well, solenoid directional control valve G5, G6 time-delay pressurize is less than 10 seconds, the oil pressure value of A group damper brake 8 energy storages 7, finish the one-level braking, after time-delay finished, the pressure oil of A group damper brake 8 by solenoid directional control valve G5 and solenoid directional control valve G6 outage transposition oil sump tank, reached the double insurance oil sump tank simultaneously, oil pressure drops to zero from energy storage pressurize value, is accomplished to two stage braking; In braking procedure, during any one solenoid directional control valve et out of order, just do not influence this braking at operating gig, but the on-line monitoring commutation position sensor that is arranged on the solenoid directional control valve spreads out of breakdown signal at once, the control gig can not start, after treating that the solenoid directional control valve fault is discharged, the control gig starts.
Principle of work: A group damper brake 8 is the basic assurances that realize two stage braking with the reliable connection of energy storage 7, because many insurances two stage braking valve road 12 of adopting a plurality of solenoid directional control valves to constitute has effectively guaranteed the reliable connection of A group damper brake 8 with energy storage 7.When one of them solenoid directional control valve breaks down, then can connect by the another one solenoid directional control valve, all solenoid directional control valves all adopt the solenoid directional control valve of commutation position on-line monitoring, but the time real each solenoid directional control valve that monitors, break down if monitor out solenoid directional control valve, can timely alarm, just do not influence this braking, but before starting gig next time, should in time remove fault at operating gig.
Claims (4)
1. double-stage braking hydraulic station with high-reliability scavenge oil, it comprises oil pump (1), hydraulicchange-over valve (2), electro-hydraulic pressure regulator device (3), reducing valve (4), check valve (5), by pass valve (6), energy storage (7), A organizes damper brake (8), B group damper brake (9) and solenoid directional control valve is characterized in that: be provided with in described A group damper brake (8) and pipeline that energy storage (7) and hydraulicchange-over valve (2) are connected and constitute a plurality of solenoid directional control valves that insure two stage braking valve roads (12) more; The import and export pipe place of A group damper brake (8) is provided with and often opens adjustable throttling (10), and the import and export of B group damper brake (9) is provided with often opens adjustable throttling (11); The pipeline of B group damper brake (9) is provided with two solenoid directional control valves that communicate with fuel tank; Be equipped with on-line monitoring commutation position sensor on all solenoid directional control valves.
2. double-stage braking hydraulic station with high-reliability scavenge oil according to claim 1 is characterized in that: a plurality of solenoid directional control valves that described formation is insured two stage braking valve road (12) more are two or three.
3. the control method of double-stage braking hydraulic station with high-reliability scavenge oil according to claim 1 is characterized in that:
During safety arrestment, control electro-hydraulic pressure regulator device (3) and oil pump (1) outage, solenoid directional control valve (G7, G8) outage transposition, the pressure oil in the B group damper brake (9) is respectively from electro-hydraulic pressure regulator device (3) and solenoid directional control valve (G7, G8) oil sump tank; Two or three solenoid directional control valves in control many insurances two stage braking valve roads (12) transposition of cutting off the power supply simultaneously simultaneously, connect A group damper brake (8) and energy storage (7):
When cage is in well head, solenoid directional control valve (G5, G6) outage transposition, the pressure oil in A group damper brake (8) and the energy storage (7) is finished safety arrestment from solenoid directional control valve (G5, G6) oil sump tank;
When cage is in the well, solenoid directional control valve (G5, G6) time-delay pressurize, the oil pressure value of A group damper brake (8) energy storage (7), finish the one-level braking, after the time-delay pressurize finishes, solenoid directional control valve (G5, G6) outage transposition, the pressure oil in A group damper brake (8) and the energy storage (7) is finished safety arrestment from solenoid directional control valve (G5, G6) oil sump tank;
In braking procedure, when any one solenoid directional control valve et out of order, the on-line monitoring commutation position sensor that is arranged on the solenoid directional control valve spreads out of breakdown signal at once, do not influence gig just in operating braking this moment, but the control gig can not start, after treating that the solenoid directional control valve fault is discharged, gig can start.
4. the control method of double-stage braking hydraulic station with high-reliability scavenge oil according to claim 3, it is characterized in that: described time-delay pressurize is less than 10 seconds.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100231087A CN101367484B (en) | 2008-07-14 | 2008-07-14 | Double-stage braking hydraulic station with high-reliability scavenge oil and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100231087A CN101367484B (en) | 2008-07-14 | 2008-07-14 | Double-stage braking hydraulic station with high-reliability scavenge oil and control method thereof |
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| CN101367484A true CN101367484A (en) | 2009-02-18 |
| CN101367484B CN101367484B (en) | 2011-01-19 |
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| CN2008100231087A Expired - Fee Related CN101367484B (en) | 2008-07-14 | 2008-07-14 | Double-stage braking hydraulic station with high-reliability scavenge oil and control method thereof |
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| CN101929487A (en) * | 2009-06-19 | 2010-12-29 | 张永林 | Automatic reset electro-hydraulic device |
| CN102913575A (en) * | 2012-10-18 | 2013-02-06 | 长沙正忠科技发展有限公司 | Novel safety brake hydraulic system for mining cableway |
| CN104595287A (en) * | 2014-11-24 | 2015-05-06 | 慕泽跃 | Energy-reclaiming constant deceleration hydraulic station |
| CN104876105A (en) * | 2015-06-26 | 2015-09-02 | 徐州大恒测控技术有限公司 | Hand-operated pressure relief device and method with second-level safety braking |
| CN105317760A (en) * | 2015-11-20 | 2016-02-10 | 连云港天明装备有限公司 | Start delay warning device for coal mine down-hole mine vehicle |
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| CN108275598A (en) * | 2018-01-26 | 2018-07-13 | 太原理工大学 | Large-scale winch emergency braking redundant hydraulic control loop |
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| DE3204695A1 (en) * | 1982-02-11 | 1983-08-18 | Siemens AG, 1000 Berlin und 8000 München | Device for the safety braking of hoists, in particular drum-type hoists |
| CN85103780A (en) * | 1985-05-08 | 1986-11-05 | 洛阳矿山机器厂 | Hydraulic delay two-stage brake hydraulic station |
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| CN101929487A (en) * | 2009-06-19 | 2010-12-29 | 张永林 | Automatic reset electro-hydraulic device |
| CN101929487B (en) * | 2009-06-19 | 2015-03-04 | 张永林 | Automatic reset electro-hydraulic device |
| CN102913575A (en) * | 2012-10-18 | 2013-02-06 | 长沙正忠科技发展有限公司 | Novel safety brake hydraulic system for mining cableway |
| CN102913575B (en) * | 2012-10-18 | 2015-04-08 | 长沙正忠科技发展有限公司 | Novel safety brake hydraulic system for mining cableway |
| CN104595287A (en) * | 2014-11-24 | 2015-05-06 | 慕泽跃 | Energy-reclaiming constant deceleration hydraulic station |
| CN104876105A (en) * | 2015-06-26 | 2015-09-02 | 徐州大恒测控技术有限公司 | Hand-operated pressure relief device and method with second-level safety braking |
| CN104876105B (en) * | 2015-06-26 | 2016-08-10 | 徐州大恒测控技术有限公司 | A kind of manual secondary safety braking pressure relief device and method |
| CN105317760A (en) * | 2015-11-20 | 2016-02-10 | 连云港天明装备有限公司 | Start delay warning device for coal mine down-hole mine vehicle |
| CN105317760B (en) * | 2015-11-20 | 2017-12-05 | 连云港天明装备有限公司 | Underground coal mine is mining vehicle start-up study warning device |
| CN107673158A (en) * | 2017-09-30 | 2018-02-09 | 枣庄矿业集团新安煤业有限公司 | A kind of hoist braking system redundant loop |
| CN108249339A (en) * | 2018-01-09 | 2018-07-06 | 徐州大恒测控技术有限公司 | A kind of perseverance deceleration safety arrestment redundant hydraulic station and its control method |
| CN108217376B (en) * | 2018-01-09 | 2019-08-16 | 徐州大恒测控技术有限公司 | A kind of proportional pressure control valve perseverance deceleration safety arrestment redundant hydraulic station and its control method |
| CN108217376A (en) * | 2018-01-09 | 2018-06-29 | 徐州大恒测控技术有限公司 | A kind of proportional pressure control valve perseverance deceleration safety arrestment redundant hydraulic station and its control method |
| CN108238561B (en) * | 2018-01-09 | 2019-11-29 | 徐州大恒测控技术有限公司 | Safety arrestment series redundancy two-stage brake hydraulic station and its control method |
| CN108238561A (en) * | 2018-01-09 | 2018-07-03 | 徐州大恒测控技术有限公司 | Safety arrestment series redundancy two-stage brake hydraulic station and its control method |
| CN108557675A (en) * | 2018-01-09 | 2018-09-21 | 徐州大恒测控技术有限公司 | A kind of safety arrestment redundancy perseverance deceleration hydraulic station and its control method |
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| CN108298452A (en) * | 2018-01-26 | 2018-07-20 | 太原理工大学 | Elevator list damper brake group redundant hydraulic control loop |
| CN108275598B (en) * | 2018-01-26 | 2019-06-28 | 太原理工大学 | Large-scale winch emergency braking redundant hydraulic control loop |
| CN108298452B (en) * | 2018-01-26 | 2019-11-01 | 太原理工大学 | Elevator list damper brake group redundant hydraulic control loop |
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