CN102674192B - Mining high-speed slippage preventive winch - Google Patents
Mining high-speed slippage preventive winch Download PDFInfo
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- CN102674192B CN102674192B CN201110056048.0A CN201110056048A CN102674192B CN 102674192 B CN102674192 B CN 102674192B CN 201110056048 A CN201110056048 A CN 201110056048A CN 102674192 B CN102674192 B CN 102674192B
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Abstract
The invention provides a mining high-speed slippage preventive winch. The mining high-speed slippage preventive winch comprises a winch body, a hydraulic system and a control system, the winch body consists of a disc brake, the hydraulic system comprises a first pipeline and a second pipeline, the first pipeline is used for being connected with a movable drum of the disc brake, the second pipeline is used for being connected with a fixed drum of the disc brake, a first hand-operated brake is serially connected onto the first pipeline, a second hand-operated brake is serially connected onto the second pipeline, and a pressure release protective electromagnetic valve is connected onto the first pipeline between the first hand-operated brake and the movable drum and the second pipeline between the second hand-operated brake and the fixed drum, and electrically connected with the control system. The mining high-speed slippage preventive winch is provided with the pressure release protective electromagnetic valve, hydraulic oil in the disc brake can be unloaded by means of conducting the pressure release protective electromagnetic valve via the control system even if the first hand-operated brake and/or the second hand-operated brake are closed, so that the disc brake is smoothly switched on to realize braking, and high-speed slippage accidents are prevented.
Description
Technical field
The present invention relates to winch technical field, relate in particular to a kind of mine winch preventing from magnifying slip.
Background technology
At present, the large-scale winch of China's coal-mine mostly adopts PLC control system to control, and is generally all provided with protection and locking and improves the reliability and safety of whole system in PLC control system.But, the comprehensive judgement link of protection that prevents magnifying slip about winch is not set always.
The existing measure that prevents winch magnifying slip is, adopt the emergency stop push button on driving position to carry out manual control, once driver finds that winch is by magnifying slip, press immediately the winch emergency stop button on driving position, winch is braked, to reach the object that prevents magnifying slip.But, when mine hoist is in the time adjusting rope form state or deciliter power-transfer clutch, due to operating sequence complexity, very easily there is maloperation in hoistman and check man, and closes the manual brake that is positioned at plate disc brake front, in the time that manual brake is misused in closed condition, hydraulic oil in plate disc brake cannot unload, winch cannot be braked, cause winch magnifying slip, brought serious consequence to the safety in production of mine.
Summary of the invention
The invention provides a kind of mine winch preventing from magnifying slip, be misused when the closed condition to solve in prior art manual brake, the hydraulic oil in plate disc brake cannot unload, and winch cannot be braked, and causes the problem of winch magnifying slip.
The invention provides a kind of mine winch preventing from magnifying slip, comprise winch body, Hydraulic system and control system, described winch body comprises plate disc brake, described hydraulic efficiency pressure system comprises the first pipeline for being connected with the movable drum of described plate disc brake, and the second pipeline for being connected with the dead block of described plate disc brake, on described the first pipeline, be serially connected with the first manual brake, on described the second pipeline, be serially connected with the second manual brake, on the second pipeline on the first pipeline between described the first manual brake and described movable drum and between the second manual brake and dead block, be connected with decompression protection electromagnetic valve, described decompression protection electromagnetic valve is electrically connected with described control system.
Mine winch preventing from magnifying slip as above; wherein; between described the first pipeline and described the second pipeline, be connected with the 3rd manual brake; described the 3rd manual brake is connected with described decompression protection electromagnetic valve; the position that described the 3rd manual brake is connected with described the first pipeline is between described the first manual brake and described movable drum, and the position that described the 3rd manual brake is connected with described the second pipeline is between described the second manual brake and described dead block.
Mine winch preventing from magnifying slip as above; wherein; described control system is PLC control system; this PLC control system is monitored the residing state of this winch and speed simultaneously; and the magnifying slip critical speed of the speed of the current state monitoring and setting is compared; if the speed of current state is greater than the magnifying slip critical speed of setting, be judged to be winch magnifying slip omen, decompression protection electromagnetic valve carries out pressure release described in the control of now described PLC control system output control signal.
Mine winch preventing from magnifying slip as above, wherein, described PLC control system is controlled pressure release number of times and the pressure release time of decompression protection electromagnetic valve according to the winch magnifying slip real-time speed monitoring, carry out braking by grades.
Mine winch preventing from magnifying slip as above, wherein, described decompression protection electromagnetic valve is 2/2-way normally closed solenoid valve.
Mine winch preventing from magnifying slip as above, wherein, described hydraulic efficiency pressure system comprises first, the second oil pumping system, described first, the second oil pumping system is connected with the oil inlet of same two-bit triplet hydraulicchange-over valve, the actuator port of described two-bit triplet hydraulicchange-over valve is connected with the first two-bit triplet electromagnetic valve, the actuator port of described the first two-bit triplet electromagnetic valve is communicated with described the first manual brake, the return opening of described the first two-bit triplet electromagnetic valve is connected with time delay valve, the actuator port of described time delay valve is connected with the second two-bit triplet electromagnetic valve, the actuator port of described the second two-bit triplet electromagnetic valve is communicated with described the second manual brake, between described first return opening of two-bit triplet electromagnetic valve and the oil inlet of described time delay valve, be connected with the first 2/2-way electromagnetic valve, the actuator port of described the first 2/2-way electromagnetic valve is connected with fuel tank, between the oil inlet of the actuator port of described time delay valve and the second two-bit triplet electromagnetic valve, be connected with the second 2/2-way electromagnetic valve, the actuator port of described the second 2/2-way electromagnetic valve is connected with described fuel tank, described first, the second two-bit triplet electromagnetic valve and first, the second 2/2-way electromagnetic valve is all electrically connected with described control system.
Mine winch preventing from magnifying slip as above, wherein, is all connected with electro-hydraulic pressure regulator device in described first, second oil pumping system.
Mine winch preventing from magnifying slip as above, wherein, described hydraulic efficiency pressure system also comprises hydraulic pressure tune rope unit, described hydraulic pressure adjusts rope unit to comprise double acting hydraulic cylinder, described double acting hydraulic cylinder is connected with the actuator port of two four-way electromagnetic reversing valves, the oil inlet of described two four-way electromagnetic reversing valves is communicated with the 3rd two-bit triplet electromagnetic valve, return opening is connected with described fuel tank, described the 3rd oil inlet of two-bit triplet electromagnetic valve and the actuator port of described time delay valve are communicated with, return opening is connected with described fuel tank, on described winch body, be provided with two travel switches along the axis of described double acting hydraulic cylinder, on the piston rod of described double acting hydraulic cylinder, be provided with the trigger unit for triggering described travel switch, described trigger unit is between two described travel switches, two described travel switches are all electrically connected with described control system.
Mine winch preventing from magnifying slip as above, wherein, described the first 2/2-way electromagnetic valve is 2/2-way normally open solenoid valve, described the second 2/2-way electromagnetic valve is 2/2-way normally closed solenoid valve.
Mine winch preventing from magnifying slip provided by the invention, on the second pipeline on the first pipeline between the first manual brake and movable drum and between the second manual brake and dead block, be connected decompression protection electromagnetic valve, even if the first manual brake and/or the second manual brake are misused in the time of closure state, in the time that control system detects by generation magnifying slip, control system is sent control signal, make decompression protection electromagnetic valve dead electricity and conducting, hydraulic oil in plate disc brake is unloaded and flows back to fuel tank, in plate disc brake without oil pressure in the situation that, plate disc brake is realized smoothly closing a floodgate and is braked, thereby prevent the generation of magnifying slip accident.
Brief description of the drawings
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 is the hydraulic system principle figure of this mine winch preventing from magnifying slip;
Fig. 2 is the control system schematic circuit diagram of mine winch preventing from magnifying slip of the present invention.
Reference numeral:
1,2-oil pump; 4,6-electro-hydraulic pressure regulator device; The commutation of surging of 5-two-bit triplet
Valve;
9-time delay valve; K
1, K
2-travel switch; G
1-tri-two-bit triplet electromagnetism
Valve;
G
2-two four-way electromagnetic G
3the-the first two-bit triplet electricity G
3'-second two-bit triplet electricity
Change-over valve; Magnet valve; Magnet valve;
G
4the-the first 2/2-way G
5the-the second 2/2-way electricity G
6-decompression protection electromagnetic valve;
Electromagnetic valve; Magnet valve;
D-motor; 7-the first pipeline; 8-the second pipeline;
10-the first manual brake; 11-the second manual brake; Q11-safety return circuit power supply is opened
Close;
S18-adjusts cord switch; K40-adjusts rope relay; K36, K46, K48, K49,
K50-relay;
The normally closed tactile S19-lock inspection switch of K15, K16-; K45, K47-clutch position
Point; Relay;
K60-protective relay; 12-the 3rd manual brake; 13-double acting hydraulic cylinder.
Detailed description of the invention
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Mine winch preventing from magnifying slip provided by the invention, comprises winch body, Hydraulic system and control system.
Winch body mainly comprises the parts such as base, drive motor, retarder, cylinder and plate disc brake, because winch body belongs to prior art, its concrete formation and annexation is not repeated here.
Wherein, hydraulic efficiency pressure system as shown in Figure 1, comprise fuel tank, on fuel tank, be connected with two the first oil pumping systems that are in parallel and the second oil pumping system, the filter that the first oil pumping system and the second oil pumping system are all connected by oil pipe and oil pump 1,2 form, oil pump is driven by corresponding motor D, and, the first oil pumping system with in the second oil pumping system, be all connected electro-hydraulic pressure regulator device 4,6, and electro-hydraulic pressure regulator device 4,6 is connected on the pipeline of oil pump 1,2 fuel-displaced sides, the oil pressure that goes out of the first oil pumping system and the second oil pumping system is regulated.The first oil pumping system is connected with the oil inlet of same two-bit triplet hydraulicchange-over valve 5 with the second oil pumping system, this two-bit triplet hydraulicchange-over valve 5 is according to the oil pressure of the first oil pumping system and the second oil pumping system, and carrying out automatic decision is to connect the first oil pumping system or connect the second oil pumping system.
Connect a first two-bit triplet electromagnetic valve G at the actuator port of two-bit triplet hydraulicchange-over valve 5
3, this first two-bit triplet electromagnetic valve G
3actuator port on connect for being serially connected with the first manual brake 10, this first two-bit triplet electromagnetic valve G on the first pipeline 7, the first pipelines 7 that are connected with the movable drum of plate disc brake
3return opening be connected with a time delay valve 9 by oil pipe, the actuator port of this time delay valve 9 is connected with a second two-bit triplet electromagnetic valve G by pipeline
3', this second two-bit triplet electromagnetic valve G
3' actuator port on connect for the second pipeline 8 of being connected with the dead block of plate disc brake, on the second pipeline 8, be serially connected with the second manual brake 11.First, second two-bit triplet electromagnetic valve G
3, G
3' be all electrically connected first, second two-bit triplet electromagnetic valve of control system control G with control system
3, G
3' keying, realize whole oil circuit set up oil pressure or unloading oil pressure.The control system is here PLC control system.
The second pipeline 11 and same decompression protection electromagnetic valve G between the first pipeline 7 between the first manual brake 10 and movable drum and the second manual brake 8 and dead block
6be connected, and this decompression protection electromagnetic valve G
6be electrically connected this decompression protection electromagnetic valve of control system control G with control system
6break-make, and then control whether the first pipeline 7 and the second pipeline 11 are carried out to pressure release.The decompression protection electromagnetic valve G selecting in the present embodiment
6for 2/2-way normally closed solenoid valve, in the time that winch is normally worked, decompression protection electromagnetic valve G
6must be electric, its oil circuit is in off-state, and now whole hydraulic circuit can be set up oil pressure, in the time that system goes wrong, decompression protection electromagnetic valve G
6dead electricity, its oil circuit is in connected state, and hydraulic oil is through this decompression protection electromagnetic valve G
6flow back to fuel tank, whole hydraulic circuit pressure release, plate disc brake can be implemented drag.Decompression protection electromagnetic valve G herein
6belong to reverse design, the safety that design has improved whole system like this.
For whole hydraulic circuit is played a protective role, at the first two-bit triplet electromagnetic valve G
3return opening and the oil inlet of time delay valve 9 between be connected with the first 2/2-way electromagnetic valve G
4, the first 2/2-way electromagnetic valve G
4actuator port be connected with fuel tank; The actuator port of time delay valve 9 and the second two-bit triplet electromagnetic valve G
3' oil inlet between be connected with the second 2/2-way electromagnetic valve G
5, the second 2/2-way electromagnetic valve G
5actuator port be connected with described fuel tank, first, second two-bit triplet electromagnetic valve G
3, G
3' and first, second 2/2-way electromagnetic valve G
4, G
5all be electrically connected with described control system.The first 2/2-way electromagnetic valve G
4for normally open solenoid valve, the second 2/2-way electromagnetic valve G
5for normally closed solenoid valve, in the time that winch is normally worked, the first 2/2-way electromagnetic valve G
4in dead electricity oil circuit off-state, the second 2/2-way electromagnetic valve G
5in obtaining electric oil circuit off-state.Now whole hydraulic efficiency pressure system is set up normal operating oil pressure.
On the actuator port of time delay valve 9, be also connected with hydraulic pressure and adjust rope unit, this hydraulic pressure adjusts rope unit to comprise double acting hydraulic cylinder 13, this double acting hydraulic cylinder 13 and two four-way electromagnetic reversing valve G
2actuator port connect, these two four-way electromagnetic reversing valve G
2oil inlet and the 3rd two-bit triplet electromagnetic valve G
1connection, return opening are connected with above-mentioned fuel tank.Described the 3rd two-bit triplet electromagnetic valve G
1oil inlet be connected with above-mentioned fuel tank with actuator port connection, the return opening of time delay valve 9.On winch body, be provided with two travel switch K1, K2 along the axis of double acting hydraulic cylinder 13, on the piston rod of double acting hydraulic cylinder 13, be provided with the trigger unit for triggering described travel switch K1, K2, and trigger unit is between two described travel switch K1, K2, and wherein two above-mentioned travel switch K1, K2 are all electrically connected with described control system.It is flexible that the signal that control system is transmitted according to travel switch K1, K2 is controlled this double acting hydraulic cylinder 13 accordingly, adjusts rop exercise to do.
Also have, when plate disc brake maintenance in the time that lock overhauls, need to divide into groups to overhaul to movable drum and dead block, for preventing in the time it being divided into groups to maintenance, hydraulic oil in the first pipeline 7 and the second pipeline 8 circulates mutually, spy has been connected the 3rd manual brake 12 between the first pipeline 7 and the second pipeline 8, the 3rd manual brake 12 is connected with decompression protection electromagnetic valve, and the position that the 3rd manual brake 12 is connected with the first pipeline 7 is being stated between the first manual brake 10 and described movable drum, the position that the 3rd manual brake 12 is connected with the second pipeline 8 is between the second manual brake 11 and described dead block.In the time that winch is normally worked, the 3rd manual brake 12 is in opening, now, and when detecting that after magnifying slip, decompression protection electromagnetic valve can normally carry out pressure release work.In the time that lock overhauls, close the 3rd manual brake 12, now between the first pipeline 7 and the second pipeline 8, be not communicated with, can overhaul separately movable drum and dead block.
Below in conjunction with control system schematic circuit diagram as shown in Figure 2, the principle of work of this mine winch preventing from magnifying slip is introduced.
When winch normally moves, adjust cord switch S18 in off-state, safety return circuit source switch Q11 is in closure state.Now adjust the rope coil of relay K 40 and lock maintenance loop to obtain electric, winch hardware security loop in failure-free situation relay K 36 electric, its open contact is for closure state.Now, the 3rd two-bit triplet electromagnetic valve G
1(mark that relates to hydraulic unit herein and is below shown in Fig. 1 simultaneously) and two four-way electromagnetic reversing valve G
2cannot obtain electricly, drum clutch is in closure state, and clutch position relay K 45, K47 obtain electric.The first two-bit triplet electromagnetic valve G
3with the second two-bit triplet electromagnetic valve G
3' under the state of adjusting the rope contact K40 of relay and the contact K45 adhesive of clutch position relay all electric, once open first, second manual brake, the first pipeline 7 and the second pipeline 8 will be set up oil pressure, can open movable drum and the dead block of plate disc brake, remove drag, now winch can normally be driven.In the time that winch is normally worked, the second 2/2-way electromagnetic valve obtains electric G
5, the in the situation that of pulleying not, the coil of upper and lower pulleying relay obtains electric its corresponding normally closed contact K15, K16 of making and disconnects, now the first 2/2-way electromagnetic valve dead electricity G
4whole hydraulic circuit can be set up normal oil pressure.
In the time that winch adjusts rop exercise to do, adjust cord switch S18 in closure state, the coil of tune rope relay K 40 obtains electric, makes the 3rd two-bit triplet electromagnetic valve G
1obtain electric G with two four-way electromagnetic reversing valves
2, and lock inspection switch S19 closure, it is electric that the coil of relay K 48, K49 obtains, and its normally closed contact is disconnected, now the first two-bit triplet electromagnetic valve G
3with the second two-bit triplet electromagnetic valve G
3' dead electricity, double acting hydraulic cylinder carries out expanding-contracting action accordingly, in the time that the trigger unit on the piston rod of double acting hydraulic cylinder (being power-transfer clutch) touches arbitrary travel switch, relay K 46, K50 obtain electricly, and the normally closed contact of relay K 46 disconnects, the 3rd two-bit triplet electromagnetic valve G
1dead electricity, adjusts rope process to finish.The first two-bit triplet electromagnetic valve G in whole tune rope process
3with the second two-bit triplet electromagnetic valve G
3' all cannot obtain electric, its to winch normally adjust rope play a protective role.
Under winch normal working, the coil of protective relay K60 is not charged, and its normally closed contact is in closure state, now decompression protection electromagnetic valve G
6obtain electric; its oil circuit is obstructed; make the first pipeline 7 and the second pipeline 8 can normally set up oil pressure; carry out brake off, protective relay K60 herein adopts normally closed contact type, is mainly in the time that winch is normally worked; can make the coil of protective relay K60 need not be charged; can avoid like this, because relay coil is long charged, relay is caused to damage, along with the raising of protective relay K60 functional reliability, and then improve the whole reliability that prevents magnifying slip system.Once PLC determines winch magnifying slip, i.e. output protection signal, makes the coil of protective relay K60 charged, attracts its normally closed contact to open, now decompression protection electromagnetic valve G
6dead electricity, its oil circuit conducting, the hydraulic oil in the first pipeline 7 and the second pipeline 8 is through decompression protection electromagnetic valve G
6flow back to fuel tank, reached the object of pressure release, the in the situation that of there is not oil pressure in the first pipeline 7 and the second pipeline 8, plate disc brake can be realized normal brake.Due to decompression protection electromagnetic valve G
6be arranged on the front that the first pipeline 7 and the second pipeline 8 are positioned at first, second manual brake 10,11 running of hydraulic power oil directions, even if first, second manual brake 10,11 is misused in closed condition like this, hydraulic oil in the first pipeline 7 and the second pipeline 8 also can unload normally, having ensured can normal braking, has avoided occurring the problem of magnifying slip.
In the time that PLC judges winch magnifying slip, it is according to the main feature that makes handle position signal comprehensively judge magnifying slip of the tune rope signal of the speed signal of winch, winch, winch drag brake maintenance signal and winch.Main make handle in zero-bit or winch in the time adjusting rope or lock inspecting state, in the time detecting that the speed of winch is greater than the magnifying slip critical speed 0.3m./s of default, be judged as magnifying slip omen, control system output speed-slackening signal makes decompression protection electromagnetic valve G
6dead electricity, brakes the first pipeline 7 and the second pipeline 8 pressure releases.Magnifying slip critical speed can be determined according to concrete service condition, for example, can be set as 0.3m./s in the present embodiment, but it can not only be confined to 0.3m./s.Certainly, in order to improve the reliability of system, it is too low that magnifying slip critical speed herein cannot arrange, and arranges when too low and easily occur misoperation, while causing braking, also brakes.
In addition, no matter under any mode of operation, as long as detect that the speed of winch is greater than 10% of command speed, be judged as the omen of winch magnifying slip, control system output speed-slackening signal makes decompression protection electromagnetic valve G
6dead electricity, brakes the first pipeline 7 and the second pipeline 8 pressure releases.
The judgement of pair twist vehicle speed is to be arranged on the shaft encoder photosignal on winch main shaft and drive motor by collection, and transfers to PLC and calculate to obtain the speed of final winch.
For the braking of winch, can determine according to the actual speed of winch number of times and the brake lag length of winch braking, while preventing because of winch high-speed operation, a step braking and cause serious accident.Adopt above-mentioned brake mode to realize braking by grades, played buffer action, make brake percentage more steady.The number of times of winch braking and brake lag length are to realize pressure release number of times and the pressure release time of controlling decompression protection electromagnetic valve by PLC.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a mine winch preventing from magnifying slip, comprise winch body, Hydraulic system and control system, described winch body comprises plate disc brake, described hydraulic efficiency pressure system comprises the first pipeline for being connected with the movable drum of described plate disc brake, and the second pipeline for being connected with the dead block of described plate disc brake, on described the first pipeline, be serially connected with the first manual brake, on described the second pipeline, be serially connected with the second manual brake, it is characterized in that, on the second pipeline on the first pipeline between described the first manual brake and described movable drum and between described the second manual brake and described dead block, be connected with decompression protection electromagnetic valve, described decompression protection electromagnetic valve is electrically connected with described control system,
Wherein, between described the first pipeline and described the second pipeline, be connected with the 3rd manual brake; described the 3rd manual brake is connected with described decompression protection electromagnetic valve; the position that described the 3rd manual brake is connected with described the first pipeline is between described the first manual brake and described movable drum, and the position that described the 3rd manual brake is connected with described the second pipeline is between described the second manual brake and described dead block.
2. mine winch preventing from magnifying slip according to claim 1; it is characterized in that; described control system is PLC control system; this PLC control system is monitored the residing state of this winch and speed simultaneously; and the magnifying slip critical speed of the speed of the current state monitoring and setting is compared; if the speed of current state is greater than the magnifying slip critical speed of setting; be judged to be winch magnifying slip omen, decompression protection electromagnetic valve carries out pressure release described in the control of now described PLC control system output control signal.
3. mine winch preventing from magnifying slip according to claim 2, is characterized in that, described PLC control system is controlled pressure release number of times and the pressure release time of decompression protection electromagnetic valve according to the winch magnifying slip real-time speed monitoring, carry out braking by grades.
4. mine winch preventing from magnifying slip according to claim 1, is characterized in that, described decompression protection electromagnetic valve is 2/2-way normally closed solenoid valve.
5. mine winch preventing from magnifying slip according to claim 1, it is characterized in that, described hydraulic efficiency pressure system comprises first, the second oil pumping system, described first, the second oil pumping system is connected with the oil inlet of same two-bit triplet hydraulicchange-over valve, the actuator port of described two-bit triplet hydraulicchange-over valve is connected with the first two-bit triplet electromagnetic valve, the actuator port of described the first two-bit triplet electromagnetic valve is communicated with described the first manual brake, the return opening of described the first two-bit triplet electromagnetic valve is connected with time delay valve, the actuator port of described time delay valve is connected with the second two-bit triplet electromagnetic valve, the actuator port of described the second two-bit triplet electromagnetic valve is communicated with described the second manual brake, between described first return opening of two-bit triplet electromagnetic valve and the oil inlet of described time delay valve, be connected with the first 2/2-way electromagnetic valve, the actuator port of described the first 2/2-way electromagnetic valve is connected with fuel tank, between the oil inlet of the actuator port of described time delay valve and the second two-bit triplet electromagnetic valve, be connected with the second 2/2-way electromagnetic valve, the actuator port of described the second 2/2-way electromagnetic valve is connected with described fuel tank, described first, the second two-bit triplet electromagnetic valve and first, the second 2/2-way electromagnetic valve is all electrically connected with described control system.
6. mine winch preventing from magnifying slip according to claim 5, is characterized in that, in described first, second oil pumping system, is all connected with electro-hydraulic pressure regulator device.
7. mine winch preventing from magnifying slip according to claim 5, it is characterized in that, described hydraulic efficiency pressure system also comprises hydraulic pressure tune rope unit, described hydraulic pressure adjusts rope unit to comprise double acting hydraulic cylinder, described double acting hydraulic cylinder is connected with the actuator port of two four-way electromagnetic reversing valves, the oil inlet of described two four-way electromagnetic reversing valves is communicated with the 3rd two-bit triplet electromagnetic valve, return opening is connected with described fuel tank, described the 3rd oil inlet of two-bit triplet electromagnetic valve and the actuator port of described time delay valve are communicated with, return opening is connected with described fuel tank, on described winch body, be provided with two travel switches along the axis of described double acting hydraulic cylinder, on the piston rod of described double acting hydraulic cylinder, be provided with the trigger unit for triggering described travel switch, described trigger unit is between two described travel switches, two described travel switches are all electrically connected with described control system.
8. mine winch preventing from magnifying slip according to claim 5, is characterized in that, described the first 2/2-way electromagnetic valve is 2/2-way normally open solenoid valve, and described the second 2/2-way electromagnetic valve is 2/2-way normally closed solenoid valve.
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| CN201110056048.0A CN102674192B (en) | 2011-03-08 | 2011-03-08 | Mining high-speed slippage preventive winch |
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|---|---|---|---|
| CN201110056048.0A CN102674192B (en) | 2011-03-08 | 2011-03-08 | Mining high-speed slippage preventive winch |
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| CN102674192B true CN102674192B (en) | 2014-08-06 |
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| CN103145058B (en) * | 2013-02-22 | 2014-12-31 | 山西潞安环保能源开发股份有限公司 | Emergency stop signal emitting device |
| CN110762086B (en) * | 2019-10-15 | 2021-07-27 | 徐州立方机电设备制造有限公司 | Hydraulic locking device of vertical shaft hybrid lifting system |
| CN115045935B (en) * | 2021-04-01 | 2023-06-13 | 中国长江电力股份有限公司 | Abrasion detection method for self-resetting air brake braking device of large hydroelectric generator |
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| CN2381836Y (en) * | 1998-04-28 | 2000-06-07 | 张志新 | Hydraulic unitary electrochemical disc brake |
| CN2918367Y (en) * | 2006-03-31 | 2007-07-04 | 陈晓豹 | Signal and lifting direction locking device of explosion-proof hydraulic winch |
| CN201712591U (en) * | 2010-04-30 | 2011-01-19 | 芜湖瑞创投资股份有限公司 | Braking system for electric forklift truck |
| CN201647751U (en) * | 2010-05-12 | 2010-11-24 | 湖南金三星煤机制造有限公司 | Mine hoist hydraulic system |
| CN201952155U (en) * | 2011-03-08 | 2011-08-31 | 淮南矿业(集团)有限责任公司 | Mine winch preventing from magnifying slip |
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