CN202901122U - Novel safety-arrestment hydraulic system for mining cableway - Google Patents
Novel safety-arrestment hydraulic system for mining cableway Download PDFInfo
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- CN202901122U CN202901122U CN 201220532723 CN201220532723U CN202901122U CN 202901122 U CN202901122 U CN 202901122U CN 201220532723 CN201220532723 CN 201220532723 CN 201220532723 U CN201220532723 U CN 201220532723U CN 202901122 U CN202901122 U CN 202901122U
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Abstract
The utility model provides a novel safety-arrestment hydraulic system for a mining cableway. An electromotor is connected with a hydraulic pump. A primary filter, the hydraulic pump and a fine filter are connected in sequence. The hydraulic pump is connected with an overflow valve and a one-way valve in a parallel mode through the fine filter, wherein the outlet of the one-way valve is connected with a P mouth of a two-position three-way main flameproof electromagnetic reversing ball valve. A T mouth of the two-position three-way main flameproof electromagnetic reversing ball valve is communicated with a T mouth of a two-position three-way ancillary flameproof electromagnetic reversing ball valve, the outlet of the overflow valve and an oil-return branch pipe T1 of an oil tank. An A mouth of the two-position three-way main flameproof electromagnetic reversing ball valve is communicated with an A mouth of the two-position three-way ancillary flameproof electromagnetic reversing ball valve and linked with a rod end chamber of a hydraulic wheel brake oil cylinder. The electromotor and the hydraulic pump of the novel safety-arrestment hydraulic system for the mining cableway are in a pressure-maintaining intermittent service manner. The novel safety-arrestment hydraulic system for the mining cableway is low in oil temperature, long in service life, high in automation degree, and good in safety performance.
Description
Technical field
The utility model relates to the hydraulics field, particularly relates to a kind of mining cableway safety brake hydraulic system.Can be widely used in the safety brake of the low speed wheel disc of mining elevator, ground ropeway, travelling cableway.
Background technique
At once stall of master's motor during the situations such as mining cableway occurs overrunning, owes fast under runnability at present, urgency is stopped, service brake can be braked, and makes system out of service.But in the situation that the service brake inefficacy, coupling connects disconnection, speed reducer internal gear pair or worm gear pair wear out failure, off-axis etc. with speed reducer special, cableway is being taken advantage of the paroxysmal automatic fast turn-around of meeting under people's action of gravitation, it is larger that driving wheel is braked needed braking force, at this moment just must utilize the larger hydraulic rim brake of braking force that driven at low speed wheel or wheel disc are carried out safety brake, the safety of assurance equipment and the person.Hydraulic rim brake is the terminal braking safety device of ropeway operation process, guarantee that this device normal operation just must configure independently safety brake hydraulic system.
Safety brake hydraulic system on the mining cableway market is the continuously uninterrupted running work of long-time on-load substantially at present, and system shock is large, and hydraulic fluid temperature is high, and hydraulic element reduction in working life can not be brought into play the due performance of hydraulic element; Simultaneously, what substantially adopt in the hydraulic braking system is single loop commutation oil return, when the selector valve fault occurring, has brought certain potential safety hazard just for the safe operation of mine cable way and braking.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of new type mining cableway safety brake hydraulic system, makes motor and oil hydraulic pump be in the pressurize intermittent duty, and oil temperature is low, long service life, and automaticity is high, and Safety performance is good.
The technical solution adopted in the utility model is:
This new type mining cableway safety brake hydraulic system comprises hydraulic oil container, motor, oil hydraulic pump, coarse-grain filtering device, fine filter, relief valve, one-way valve, two-position three way master flame proof electromagnetic ball valve, the secondary flame proof electromagnetic ball valve of two-position three way, accumulator, temperature transducer, pressure transmitter and hydraulic rim brake oil cylinder; Connecting fluid press pump on motor, the inlet port of oil hydraulic pump is connected with coarse-grain filtering device on the hydraulic oil container oil outlet tube, the oil outlet of oil hydraulic pump is in series with fine filter by oil pipe and is connected, through fine filter, be connected in parallel with relief valve and one-way valve respectively, wherein the outlet of one-way valve links to each other with the P mouth of two-position three way master flame proof electromagnetic ball valve, the T mouth of the secondary flame proof electromagnetic ball valve of the T mouth of two-position three way master flame proof electromagnetic ball valve and two-position three way and relief valve outlet, tank drainback arm T
1Be connected, the A mouth of two-position three way master flame proof electromagnetic ball valve is connected with the A mouth of the secondary flame proof electromagnetic ball valve of two-position three way, and directly connects with the rod chamber of hydraulic rim brake oil cylinder by output oil pipe at manifold block.
In the technique scheme, be connected to pressure transmitter at the A mouth of two-position three way master flame proof electromagnetic ball valve and the A mouth of the secondary flame proof electromagnetic ball valve of two-position three way and the pipeline that is communicated with break oil cylinder rod chamber.
In the technique scheme, be connected accumulator at the P mouth of two-position three way master flame proof electromagnetic ball valve with the oil pipe of one-way valve outlet.
In the technique scheme, be connected with the temperature transducer that detects oil temperature at hydraulic oil container, also have the highest and minimum oil level sign of fuel level in tank by the liquid level thermometer that hydraulic oil container connects simultaneously.
Working principle:
Utilize the rotation of motor drives oil hydraulic pump, oil suction pressure oil output from fuel tank, through the required oil pressure value of pressure regulator valve regulation output, the fine filter individual event valve of flowing through, get electric by electromagnet on two two-position three way flame proof electromagnetic ball valves, pressure oil flows through two-position three way master flame proof electromagnetic ball valve and directly enters the break oil cylinder, and cylinder piston rod shrinks in oil cylinder under the oil pressure effect, and left and right sides brake arm is opened rapidly stopping brake under piston rod drives; During normal operation, utilize pressure transmitter initialization system pressure upper and lower scope, cooperate accumulator and one-way valve to carry out system's pressurize work, the work that stops operating of motor and oil hydraulic pump, motor and oil hydraulic pump start again during underpressure, so hocketing guarantees that all the time stopping brake is in open mode all the time, and motor and oil hydraulic pump are in the service intermittent mode.When the need emergency braking, the electromagnet dead electricity of two two-position three way flame proof electromagnetic ball valves, realize that double loop oil release discharges, the oil hydraulic cylinder disc spring force be delivered to brake block by brake arm and act on driving wheel or wheel disc on, and produce enough clamping forces and realize the emergency safety braking.
Compared with prior art, the beneficial effects of the utility model are:
1. this model utility provides the hydraulic system of a kind of novel pressurize intermittent work of mining cableway driven at low speed wheel and Multiple disc brake (hydraulic rim brake).When the system pressure detection reached pressure transmitter capping value, motor and oil hydraulic pump outage were shut down, and by one-way valve the reverse locked system of oil circuit are entered packing state, are revealed by the accumulator supplementary pressure; When system pressure was low to moderate the pressure transmitter preset lower limit, system's autoboot motor and oil hydraulic pump were to system again voltage supply, until return to again the setting pressure CLV ceiling limit value, motor and oil hydraulic pump cut off the power supply again for shutting down and enter packing state; So hocketing guarantees that stopping brake is in open mode all the time, and motor and oil hydraulic pump are in the service intermittent mode.
2. this model utility has adopted the electromagnetic ball valve structure, has an amount of leakage little, and the dwell time is long, configures two two-position three way flame proof electromagnetic ball valves, realizes under normal circumstances double loop outage release oil sump tank, realizes the duplicate protection of break braking.Even in particular cases break down can't oil return for one of them two-position three way flame proof electromagnetic ball valve, the rapid oil return of also cutting off the power supply of another two-position three way flame proof electromagnetic ball valve realizes safety brake.
3. what this hydraulic system adopted is pressurize intermittent work mode, oil liquid temperature is low, need not configure cooler, and fluid is guaranteed the cleaning of fluid through twice filtration of coarse-grain filtering device and fine filter simultaneously, make the hydraulic element performance more stable, reliable, greatly improve working life.
4. this hydraulic station is adopted as power-off failure type principle, and after the hydraulic brake system debug was good, the hydraulic braking sytem working procedure that reaches of hydraulic rim brake was realized by the PLC of master control system fully, does not need artificial Attended Operation.
Description of drawings
Fig. 1 is the utility model schematic diagram.
The explanation of accompanying drawing distance pole:
1-hydraulic oil container, 2-fuel outlet ball valve, 3-liquid level thermometer, 4-air filter, 5-temperature transducer, 6-coarse-grain filtering device, 7-oil hydraulic pump, 8-motor, 9-fine filter, 10-relief valve, 11-one-way valve, 12-pressure meter switch, 13-pressure gauge, 14.1-two-position three way master flame proof electromagnetic ball valve, the secondary flame proof electromagnetic ball valve of 14.2-two-position three way, 15-accumulator, 16-pressure transmitter, 17-output oil pipe, 18-hydraulic rim brake oil cylinder.
Embodiment:
Referring to Fig. 1, the utility model comprises hydraulic oil container, motor, oil hydraulic pump, coarse-grain filtering device, fine filter, relief valve, one-way valve, two-position three way master flame proof electromagnetic ball valve, the secondary flame proof electromagnetic ball valve of two-position three way, accumulator, temperature transducer, pressure transmitter and hydraulic rim brake oil cylinder; Connecting fluid press pump on motor, the inlet port of oil hydraulic pump is connected with coarse-grain filtering device on the hydraulic oil container oil outlet tube, the oil outlet of oil hydraulic pump is in series with fine filter by oil pipe and is connected, through fine filter, be connected in parallel with relief valve and one-way valve respectively, wherein the outlet of one-way valve links to each other with the P mouth of two-position three way master flame proof electromagnetic ball valve, the T mouth of the secondary flame proof electromagnetic ball valve of the T mouth of two-position three way master flame proof electromagnetic ball valve and two-position three way and relief valve outlet, tank drainback arm T
1Be connected, the A mouth of two-position three way master flame proof electromagnetic ball valve is connected with the A mouth of the secondary flame proof electromagnetic ball valve of two-position three way, and directly connects with the rod chamber of hydraulic rim brake oil cylinder by output oil pipe at manifold block.
Above-mentioned at two-position three way master flame proof electromagnetic ball valve A mouth and the A mouth of the secondary flame proof electromagnetic ball valve of two-position three way and be connected to pressure transmitter with the pipeline of break oil cylinder rod chamber.
Above-mentioned P mouth at two-position three way master flame proof electromagnetic ball valve is connected accumulator with the oil pipe of one-way valve outlet.
The above-mentioned temperature transducer that detects oil temperature that is connected with at hydraulic oil container, the liquid level thermometer next door of simultaneously hydraulic oil container connection also have the highest and minimum oil level sign of fuel level in tank.
Working procedure: new type mining cableway safety brake hydraulic system utilizes motor 8 to drive oil hydraulic pump 7 rotations, oil suction from fuel tank 1, through coarse-grain filtering device 6 and fine filter 9 pressure oil output, working pressure by the required brake pump of relief valve 10 setting, and flow through one-way valve 11, through the master, secondary two two-position three way flame proof electromagnetic ball valves 14.1,14.2 electromagnet 1DT, 2DT energising commutation (P mouth and A mouth are connected), hydraulic oil is smoothly by two-position three way master flame-proof type electromagnetic ball valve 14.1, directly enter the rod chamber oil cylinder 18 of break through output oil pipe 17, cylinder piston rod shrinks in oil cylinder rapidly under the oil pressure effect, left and right sides brake arm is opened rapidly (namely declutching) under piston rod drives, and give accumulator 15 supplementary pressures oily, when system pressure 13 reaches pressure transmitter 16 and sets CLV ceiling limit value, motor 8 and oil hydraulic pump 7 outages, one-way valve 11 reverse self-lockings, system enters packing state, by the loss of accumulator 15 supplementary pressures oil; When system pressure 13 is down to the lower limit of pressure transmitter 16 settings; system reset automatically motor 8 and oil hydraulic pump 7; hydraulic oil is opened 11 pairs of again voltage supply of system of one-way valve; until return to again setting pressure transmitter 16 CLV ceiling limit value; the shutdown of cutting off the power supply again of motor 8 and oil hydraulic pump 7; one-way valve 11 is reverse self-locking again, and system enters again packing state.So hocketing guarantees that stopping brake is in open mode all the time, and motor and oil hydraulic pump are in intermittent work.
When break down or the electic protection loop in arbitrarily safety protection action, when needing emergency braking, except the outage of cableway master motor shut down and the service brake braking, motor 8 outages of this hydraulic braking system, oil hydraulic pump 7 fuel cut-offs, working connection oil pressure are zero; The simultaneously major and minor flame proof electromagnetic ball valve 14.1 of two-position three way, 14.2 electromagnet DT1, DT2 outage, pressure oils in the oil cylinder 18 that connects with oil pipe 17 are respectively through the major and minor flame proof electromagnetic ball valve 14.1 of two-position three way, 14.2(A mouth and the connection of T mouth) directly flow back to fuel tank 1,18 releases of break oil cylinder discharge, and disc spring force is delivered to brake block and acts on driving by brake arm; On wheel or the wheel disc, produce enough clamping forces, carry out the emergency safety braking.
Although illustrated and described embodiment of the present utility model, it will be appreciated by those skilled in the art that, in the situation that do not break away from principle of the present utility model and aim can be carried out multiple variation, modification, replacement and modification to these embodiments, scope of the present utility model is limited by claim and equivalent thereof.
Claims (4)
1. a new type mining cableway safety brake hydraulic system is characterized in that: comprise hydraulic oil container, motor, oil hydraulic pump, coarse-grain filtering device, fine filter, relief valve, one-way valve, two-position three way master flame proof electromagnetic ball valve, the secondary flame proof electromagnetic ball valve of two-position three way, accumulator, temperature transducer, pressure transmitter and hydraulic rim brake oil cylinder; Connecting fluid press pump on motor, the inlet port of oil hydraulic pump is connected with coarse-grain filtering device on the hydraulic oil container oil outlet tube, the oil outlet of oil hydraulic pump is in series with fine filter by oil pipe and is connected, through fine filter, be connected in parallel with relief valve and one-way valve respectively, wherein the outlet of one-way valve links to each other with the P mouth of two-position three way master flame proof electromagnetic ball valve, the T mouth of the secondary flame proof electromagnetic ball valve of the T mouth of two-position three way master flame proof electromagnetic ball valve and two-position three way and relief valve outlet, tank drainback arm T
1Be connected, the A mouth of two-position three way master flame proof electromagnetic ball valve is connected with the A mouth of the secondary flame proof electromagnetic ball valve of two-position three way, and directly connects with the rod chamber of hydraulic rim brake oil cylinder by output oil pipe at manifold block.
2. new type mining cableway safety brake hydraulic system according to claim 1 is characterized in that: be connected to pressure transmitter at the A mouth of two-position three way master flame proof electromagnetic ball valve and the A mouth of the secondary flame proof electromagnetic ball valve of two-position three way and the pipeline that is communicated with break oil cylinder rod chamber.
3. new type mining cableway safety brake hydraulic system according to claim 1 is characterized in that: the P mouth at two-position three way master flame proof electromagnetic ball valve is connected accumulator with the oil pipe of one-way valve outlet.
4. new type mining cableway safety brake hydraulic system according to claim 1, it is characterized in that: be connected with the temperature transducer that detects oil temperature at hydraulic oil container, also have the highest and minimum oil level sign of fuel level in tank by the liquid level thermometer that hydraulic oil container connects simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220532723 CN202901122U (en) | 2012-10-18 | 2012-10-18 | Novel safety-arrestment hydraulic system for mining cableway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220532723 CN202901122U (en) | 2012-10-18 | 2012-10-18 | Novel safety-arrestment hydraulic system for mining cableway |
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| CN202901122U true CN202901122U (en) | 2013-04-24 |
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| CN 201220532723 Expired - Lifetime CN202901122U (en) | 2012-10-18 | 2012-10-18 | Novel safety-arrestment hydraulic system for mining cableway |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108443369A (en) * | 2018-05-21 | 2018-08-24 | 苏州大方特种车股份有限公司 | Hydraulic braking bridge and hydraulic drive vehicle |
| CN108488277A (en) * | 2018-05-29 | 2018-09-04 | 凯盛重工有限公司 | A kind of hydraulic system of mining brake shuttle tram |
| RU2731086C2 (en) * | 2016-05-11 | 2020-08-28 | Кейтерпиллар (Цинчжоу) Лтд. | Hydraulic system for operation in low temperature conditions and machine equipped with it |
-
2012
- 2012-10-18 CN CN 201220532723 patent/CN202901122U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| RU2731086C2 (en) * | 2016-05-11 | 2020-08-28 | Кейтерпиллар (Цинчжоу) Лтд. | Hydraulic system for operation in low temperature conditions and machine equipped with it |
| CN108443369A (en) * | 2018-05-21 | 2018-08-24 | 苏州大方特种车股份有限公司 | Hydraulic braking bridge and hydraulic drive vehicle |
| CN108488277A (en) * | 2018-05-29 | 2018-09-04 | 凯盛重工有限公司 | A kind of hydraulic system of mining brake shuttle tram |
| CN108488277B (en) * | 2018-05-29 | 2024-03-26 | 凯盛重工有限公司 | Hydraulic system of mining braking shuttle car |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |
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| CX01 | Expiry of patent term |