CN107415700B - A kind of pneumatic bow-lifting device of tramcar and rising bow control method - Google Patents

A kind of pneumatic bow-lifting device of tramcar and rising bow control method Download PDF

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CN107415700B
CN107415700B CN201710638330.7A CN201710638330A CN107415700B CN 107415700 B CN107415700 B CN 107415700B CN 201710638330 A CN201710638330 A CN 201710638330A CN 107415700 B CN107415700 B CN 107415700B
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bow
oil
air compressor
lifting device
pressure
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CN107415700A (en
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徐红星
林业
胡基贵
蒋红果
曾要争
刘云峰
张弛
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CRRC Nanjing Puzhen Co Ltd
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CRRC Nanjing Puzhen Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
    • B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
    • B60L5/22—Supporting means for the contact bow
    • B60L5/28—Devices for lifting and resetting the collector
    • B60L5/32—Devices for lifting and resetting the collector using fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/261—Drying gases or vapours by adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The invention discloses a kind of pneumatic bow-lifting device of tramcar and rising bow control methods, including oil-free air compressor, air filter and brshless DC motor aerial cooler, moisture trap, blowoff electromagnetic valve, heater, check valve, AMT drier, overflow valve and pressure switch；Air filter is located at the arrival end of oil-free air compressor, and brshless DC motor provides power for oil-free air compressor；The outlet end of oil-free air compressor is connect with aerial cooler entrance, and aerial cooler outlet is connect with moisture trap entrance, and moisture trap is equipped with blowoff electromagnetic valve, and having heaters is arranged on blowoff electromagnetic valve；The outlet of moisture trap is connected by check valve with the entrance of AMT drier, is connected with overflow valve and pressure switch in turn on the export pipeline of AMT drier, wherein pressure switch is connected with brshless DC motor.The present invention can effectively solve the problem that the frequent rising bow of tramcar and the problem high to compressed air class requirement.

Description

A kind of pneumatic bow-lifting device of tramcar and rising bow control method
Technical field
The present invention relates to rail vehicle braking system design field, the pneumatic bow-lifting device of especially a kind of tramcar and Rising bow control method.
Background technique
Backup of the existing subway bow-lifting device as rising bow gas source, normal rising bow are provided by braking system gas source, are only existed It just will use the bow-lifting device in the case that braking system wind pressure is insufficient and subway No DC 1500V high voltage supply, therefore using should The probability of bow-lifting device is less, while subway high-voltage is all fronts contact net by stream, pantograph be constantly in rising bow by stream mode and Rising bow contact pressure is to fix, and system does not configure compacting pressure regulating valve, not high to the air quality demand of gas source.
General metro project bow-lifting device only configures air compressor machine and pressure switch, and system is also pressed without frequent starting and high-precision Power adjusting etc. requires.
Tramcar power supply mode mostly uses contactless net mode, and vehicle is equipped with energy storage device, uses pantograph in platform Charge to energy storage device by stream from contact net.
Pantograph drop bow when road transport row online due to tramcar, pantograph needs to use low-pressure rising bow when entering the station, etc. Train is needed after coming to a complete stop using high pressure rising bow, and the use of daily 500 times frequent rising bows and high-precision pressure regulator valve is to bow-lifting device Demand it is higher.
If the bow-lifting device of the prior art, can not using on the pneumatic bow-lifting device of the tramcar in contactless net Meet rising bow demand, concrete reason is analyzed as follows:
1. pantograph high-low pressure rising bow, control section configures high-precision pressure regulator valve, dry to air source quality especially air Dry degree has strict demand.
2. water and impurity all pass through automatically controlled blowdown valve and discharge in the bow-lifting device of the prior art, since water and impurity are blended in Together, blowdown valve core clamping stagnation is easily led to, systems stay gas leakage leads to air supply system insufficient pressure.
In addition, the frequent starting of air compressor machine also proposed strict demand, the liter of the prior art to drier in tramcar Even if bending device using membrane dryer, then due to membrane dryer, reliability is substantially reduced under the operating condition, air compressor machine Difference in activation pressure caused by frequent starting, difference in flow make the film wire of membrane dryer is more easily rupturable to lead to gas leakage, reduce gas source The reliability of system.
Summary of the invention
In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a kind of tramcar gas Dynamic bow-lifting device, the tramcar with pneumatic bow-lifting device can effectively solve the problem that the frequent rising bow of tramcar and to compressed airs etc. The demanding problem of grade.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of pneumatic bow-lifting device of tramcar, including the gas circuit case being connected with pantograph, the gas circuit case is for controlling The lifting of pantograph processed.
Gas circuit case include energy source box, aerial cooler, moisture trap, blowoff electromagnetic valve, heater, particulate filter, AMT drier, overflow valve, pressure switch and check valve.
Energy source box includes oil-free air compressor, air filter and brshless DC motor；Air filter is arranged in nothing The arrival end of oily air compressor, brshless DC motor provide power for oil-free air compressor.
The outlet end of oil-free air compressor is connected with the entrance of aerial cooler, the outlet of aerial cooler and air water The entrance of separator is connected, and the blowoff electromagnetic valve is provided on moisture trap, and described add is provided on blowoff electromagnetic valve Hot device；The outlet of moisture trap is connected with particulate filter, and the outlet of particulate filter is connected with the entrance of AMT drier Connect, be connected with overflow valve, pressure switch and check valve on the export pipeline of AMT drier in turn, wherein pressure switch with it is brushless Direct current generator, which is electrically connected, to be connect.
Safety valve and vibration damping cylinder are disposed on the pipeline that aerial cooler is connected with moisture trap.
Blowoff electromagnetic valve is provided with the temperature sensor being connected with heater.
Oil-free air compressor is the oil-free piston type air compressor of 24V, single cylinder single stage compress, and revolving speed 1400r/min is specified Pressure 9bar.
Safety valve sets pressure as 10.5bar.
The pressure of overflow valve is 6.5bar.
Heater is resistance heater.
The present invention also provides a kind of rising bow control methods of the pneumatic bow-lifting device of tramcar, and the tramcar is with pneumatically The rising bow control method of bow-lifting device can effectively solve the problem that the frequent rising bow of tramcar and ask compressed air class requirement is high Topic.
A kind of rising bow control method of the pneumatic bow-lifting device of tramcar, includes the following steps.
Step 1, oil-free air compressor start and stop pressure is arranged: the starting pressure of oil-free air compressor is set as 7bar, It shuts down pressure and is set as 9bar；The start and stop of oil-free air compressor are controlled by the pressure switch being connected with brshless DC motor, Start when pressure is lower than 7bar, is shut down when higher than 9bar.
Step 2, dual-control loop is arranged: two control loops of bow-lifting device outlet configuration, for controlling high-low pressure liter 6bar precise pressure regulating valve is arranged in bow, one of control loop, guarantees the normal pressure 200N of pantograph and contact net；Another control 4bar precise pressure regulating valve is arranged in circuit processed, guarantees that the normal pressure of pantograph and contact net is 80N.
Step 3, current collecting bow lifting bow is arranged with gas circuit: the compressed air that oil-free air compressor generates successively passes through air Filter, moisture trap, particulate filter and AMT drier；Wherein, it is provided with and adds on the blowoff electromagnetic valve of moisture trap The control signal of hot device, heater is inputted by vehicle, and when environment temperature is lower than 5 DEG C, bow-lifting device is automatically to blowoff electromagnetic valve Sewage draining exit heating, avoid freezed in winter.
Step 4, battery charges: tramcar controls 4bar precise pressure regulating valve when driving into station, guarantees that pantograph is low Pressure rising bow automatically switches to control 6bar precise pressure regulating valve, guarantees pantograph high pressure rising bow after vehicle arrives at a station parking, Quickly charge a battery.
In step 2,6bar precise pressure regulating valve and 4bar precise pressure regulating valve are provided with the throttling of 3mm in control loop Hole, flow are set in 11.5L/min, pantograph can be made to complete rising bow in 3s.
The blowoff electromagnetic valve of moisture trap is controlled by the contactor auxiliary contact of oil-free air compressor, when oil-free sky Air compressor starts contact closure, and oil-free air compressor work, blowoff electromagnetic valve must be electrically turn off, when oil-free air compressor opens Movable contact disconnects, and oil-free air compressor does not work, and blowoff electromagnetic valve power loss is opened, the automatic liquid water for excluding filter vat.
The invention has the following beneficial effects:
1. configure absorbent media pipeline AMT drier, can efficient application under the operating condition of air compressor machine frequent starting, Drying efficiency is unaffected, relatively reliable, and maintenance cost is low.
2. above-mentioned moisture trap can be by the secondary filtration after the removal of the liquid water of compressed air using moisture trap Mode, water and dirt separately filter, and on the one hand can be avoided the clamping stagnation leakage problem of blowdown valve；On the other hand liquid can also be avoided Water enters AMT drier, improves the reliability and drying effect of AMT drier, long-term liquid water is avoided to be gathered in adsorptivity In medium pipeline, shorten the service life of AMT drier.
3. the overflow valve of above-mentioned 6.5bar can guarantee that AMT drier quickly establishes pressure, improve drying effect.
4. the setting of above-mentioned check valve increases system reliability, avoid in the case where AMT drier blowback failure excessively Consume wind, cause system pressure insufficient, pantograph can not rising bow the problem of.
5. above-mentioned AMT drier long service life is 3 times of membrane dryer service life, can reach 6 years or more, from And plant failure rate and maintenance cost are greatly reduced, economy is high.
In short, principle of the invention design is ingenious, control is simple, it is convenient to realize.It has fully considered in terms of the system integration by electricity Demand of the frequent rising bow of bow to reliability, on the one hand the reliability of the device is very high, using brushless motor, AMT drier machine Tool blowback, vibration damping cylinder and electro-resistive heating element etc., on the other hand the device compressed air grade is high, can satisfy high-precision valve Use.The present invention can be used in pantographs rising bows such as tramcar, gyrocar and empty rail vehicles, be had before being widely applied very much Scape.
Detailed description of the invention
Fig. 1 shows a kind of structural schematic diagram of the pneumatic bow-lifting device of tramcar of the present invention.
Wherein have:
10. gas circuit case；
11, aerial cooler；12, safety valve；13, vibration damping cylinder；14, moisture trap；141, blowoff electromagnetic valve；15, Particulate filter；16, check valve；17, AMT drier；18, overflow valve；19, pressure switch；
20. energy source box；
21, air filter；22, oil-free air compressor；23, brshless DC motor.
Specific embodiment
Xia Mianjiehefutuhejuti compare Jia Shishifangshiduibenfamingzuojinyibuxiangxishuoming.
As shown in Figure 1, a kind of pneumatic bow-lifting device of tramcar should including the gas circuit case 10 being connected with pantograph Gas circuit case is used to control the lifting of pantograph.
Gas circuit case includes energy source box 20, aerial cooler 11, moisture trap 14, blowoff electromagnetic valve 141, particulate filter 15, heater, check valve 16, AMT drier 17, overflow valve 18 and pressure switch 19.
Energy source box includes oil-free air compressor 22, air filter 21 and brshless DC motor 23.
The arrival end of oil-free air compressor is arranged in air filter.
Oil-free air compressor is preferably the oil-free piston type air compressor of 24V, single cylinder single stage compress, revolving speed 1400r/min, Rated pressure 9bar.
Brshless DC motor provides power for oil-free air compressor, and then controls the lifting of pantograph.Brushless dc Machine is preferably 24V DC brushless motor, can adapt to the frequent rising bow of tramcar, the operating condition of motor frequent starting, use is brushless Motor reduces motor because of frequent starting bring carbon brush failure and maintenance, improves the reliability of bow-lifting device.
The outlet end of oil-free air compressor is connected with the entrance of aerial cooler.
Further, safety valve 12 and vibration damping are disposed on the pipeline that aerial cooler is connected with moisture trap Cylinder 13.
The capacity of above-mentioned vibration damping cylinder is preferably 1L, for reducing the fluctuation of compressed air, is met in gas circuit control module The requirements of accurate air path elements and provide pantograph by stream stability.
The setting pressure of above-mentioned safety valve is preferably 10.5bar.
The outlet of aerial cooler is connected with the entrance of moisture trap, and blowdown electromagnetism is provided on moisture trap Having heaters is arranged on blowoff electromagnetic valve in valve.
Above-mentioned blowoff electromagnetic valve is preferably provided with the temperature sensor being connected with heater.
Above-mentioned heater is preferably resistance heater.
The outlet of moisture trap is connected with particulate filter, the outlet of particulate filter and the entrance of AMT drier Be connected, be connected with overflow valve, pressure switch and check valve on the export pipeline of AMT drier in turn, wherein pressure switch with Brshless DC motor, which is electrically connected, to be connect.
The pressure of above-mentioned overflow valve is preferably arranged to 6.5bar, can guarantee there is foot by the compressed air of AMT drier Enough pressure improves the drying efficiency of AMT drier.
Bow-lifting device uses minimum pressure valve and moisture trap to be used to improve the drying effect of drier simultaneously, and raising can By property.
Above-mentioned AMT drier uses twin flue drier, and a pipeline is used for blowback again for removing water drying, a pipeline Raw, twin flue switching uses, and improves drying efficiency, and dry and regenerated switching time is 120s.Meanwhile two pipelines are to inhale Attached property medium pipeline.
In addition, the non-membrane dryer of ATM drier, using absorbent media pipeline material in adsorption compression air Moisture.
Moisture trap is configured between aerial cooler and particulate filter, for the liquid in filtering compressed air Water.The filtering ladle capacity of moisture trap is 0.25L, can satisfy air compressor machine continuous work 10min maximum displacement requirement.
Further, check valve is configured at the source outlet of pressure switch downstream, increases system reliability, is avoided dry in AMT Excessively consume wind in the case where dry device blowback failure, cause system pressure insufficient, pantograph can not rising bow the problem of.
Further, bow-lifting device configuration timer (built-in power), using the work side of DC24V trigger voltage starting timing Formula, power-off stop timing, provide vehicle maintenance data, personnel convenient for safeguarding judge system component failure situation.
Further, bow-lifting device, which has, provides high quality wind regime, can adapt to the control of device in the frequent rising bow the case where It is completed by system itself, electric interfaces design is simple.
A kind of rising bow control method of the pneumatic bow-lifting device of tramcar, includes the following steps.
Step 1, oil-free air compressor start and stop pressure is arranged: the starting pressure of oil-free air compressor is set as 7bar, It shuts down pressure and is set as 9bar；The start and stop of oil-free air compressor are controlled by the pressure switch being connected with brshless DC motor, Start when pressure is lower than 7bar, is shut down when higher than 9bar.
Step 2, dual-control loop is arranged: two control loops of bow-lifting device outlet configuration, for controlling high-low pressure liter 6bar precise pressure regulating valve is arranged in bow, one of control loop, guarantees the normal pressure 200N of pantograph and contact net；Another control 4bar precise pressure regulating valve is arranged in circuit processed, guarantees that the normal pressure of pantograph and contact net is 80N.
Above-mentioned 6bar precise pressure regulating valve and 4bar precise pressure regulating valve are provided with the throttle orifice of 3mm in control loop, stream Amount is set in 11.5L/min, pantograph can be made to complete rising bow in 3s.
Step 3, current collecting bow lifting bow is arranged with gas circuit: the compressed air that oil-free air compressor generates successively passes through air Filter, moisture trap, particulate filter and AMT drier；Wherein, it is provided with and adds on the blowoff electromagnetic valve of moisture trap The control signal of hot device, heater is inputted by vehicle, and when environment temperature is lower than 5 DEG C, bow-lifting device is automatically to blowoff electromagnetic valve Sewage draining exit heating, avoid freezed in winter.
The blowoff electromagnetic valve of above-mentioned moisture trap is controlled by the contactor auxiliary contact of oil-free air compressor, works as nothing Oily air compressor starts contact closure, oil-free air compressor work, and blowoff electromagnetic valve must be electrically turn off, when oil-free air compresses Machine starts contact and disconnects, and oil-free air compressor does not work, and blowoff electromagnetic valve power loss is opened, the automatic liquid for excluding filter vat Water.
The setting of above-mentioned heater, enables bow-lifting device to operate normally in cold climates, when bow-lifting device detects When environment temperature is lower than 3 DEG C, bow-lifting device will not directly initiate air compressor machine, and bow-lifting device needs first to resistance heating 5min After restart air compressor machine, it is therefore an objective to consider low temperature down blow mouth ice blockage, influence moisture trap cleanliness, guarantee rising bow dress Set reliable utilization.
Step 4, battery charges: for tramcar when driving into station, driver is by operating rising bow button control of entering the station The pressure of 4bar precise pressure regulating valve quick low voltage power rising bow, pantograph and contact net is 80N；When tramcar inlet parking, Vehicle can control 6bar precise pressure regulating valve quick high-pressure power rising bow in conjunction with rising bow signal and zero-speed signal is entered the station, pantograph with connect Net-fault pressure is 200N, guarantees boost battery charge.In addition the rising bow that enters the station can also be by vehicle according to home signal automatic trigger Enter the station rising bow.When station is sailed out of in tramcar starting, vehicle rising bow signal and comes without zero-speed signal automatic also according to entering the station It controls 4bar precise pressure regulating valve and uses low-pressure rising bow, after vehicle, which receives, sails out of signaling at stations, the fast prompt drop bow of pantograph, equally Drop bow can also be completed by driver operation.
Bow-lifting device of the invention is due to configuring above-mentioned air filter, moisture trap, AMT drier and oil-free air Compressor, so as to provide clean clean oil-free compressed air, grade can reach 8543 standard 4-2-4 air quality of ISO It is required that meeting the requirement of pantograph high-low pressure rising bow precise pressure regulating valve.
In addition, bow-lifting device of the invention safe and reliable can be applied on the tramcar of contactless net, configuration is inhaled The AMT drier of attached property medium pipeline, can efficient application under the operating condition of air compressor machine frequent starting, drying efficiency not will receive It influences, relatively reliable, maintenance cost is low；In addition special moisture trap is first configured, after the liquid water of compressed air is removed Using the secondary filtration mode of moisture trap, water and dirt are separately filtered, and can be avoided the clamping stagnation leakage problem of blowdown valve；System System also configures 6.5bar minimum pressure valve, can guarantee that AMT drier quickly establishes pressure, improve drying effect；In addition system Increase moisture trap can liquid water in filtering compressed air, can be avoided liquid water and enter AMT drier, improve AMT The reliability and drying effect of drier, avoid long-term liquid water from being gathered in absorbent media pipeline, shorten AMT drier Service life.Check valve is configured at the source outlet of pressure switch downstream simultaneously, increases system reliability, avoids in AMT drier Excessively consume wind in the case where blowback failure, cause system pressure insufficient, pantograph can not rising bow the problem of.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above Detail a variety of equivalents can be carried out to technical solution of the present invention within the scope of the technical concept of the present invention, this A little equivalents all belong to the scope of protection of the present invention.

Claims (10)

1. a kind of rising bow control method of the pneumatic bow-lifting device of tramcar, characterized by the following steps:
Step 1, oil-free air compressor start and stop pressure is arranged: the starting pressure of oil-free air compressor is set as 7bar, shuts down Pressure is set as 9bar；The start and stop of oil-free air compressor are controlled by the pressure switch being connected with brshless DC motor, are being pressed Power starts when being lower than 7bar, shuts down when higher than 9bar；
Step 2, dual-control loop is arranged: two control loops of bow-lifting device outlet configuration, for controlling high-low pressure rising bow, In control loop 6bar precise pressure regulating valve is set, guarantee the normal pressure 200N of pantograph and contact net；Another is controlled back 4bar precise pressure regulating valve is arranged in road, guarantees that the normal pressure of pantograph and contact net is 80N；
Step 3, current collecting bow lifting bow is arranged with gas circuit: the compressed air that oil-free air compressor generates successively passes through air filtration Device, moisture trap, particulate filter and AMT drier；Wherein, heating is provided on the blowoff electromagnetic valve of moisture trap Device,
The control signal of heater is inputted by vehicle, and when environment temperature is lower than 5 DEG C, bow-lifting device is automatically to blowoff electromagnetic valve Sewage draining exit heating, avoids freezed in winter；
Step 4, battery charges: tramcar controls 4bar precise pressure regulating valve when driving into station, guarantees pantograph low-pressure Rising bow automatically switches to control 6bar precise pressure regulating valve, guarantees pantograph high pressure rising bow, quickly after vehicle arrives at a station parking It charges a battery.
2. the rising bow control method of the pneumatic bow-lifting device of tramcar according to claim 1, it is characterised in that: step In 2,6bar precise pressure regulating valve and 4bar precise pressure regulating valve are provided with throttle orifice in control loop, and flow is set in 11.5L/min can make pantograph complete rising bow in 3s.
3. the rising bow control method of the pneumatic bow-lifting device of tramcar according to claim 1, it is characterised in that: air water The blowoff electromagnetic valve of separator is controlled by the contactor auxiliary contact of oil-free air compressor, when oil-free air compressor starts Contact closure, oil-free air compressor work, blowoff electromagnetic valve must be electrically turn off, and be disconnected when oil-free air compressor starts contact, Oil-free air compressor does not work, and blowoff electromagnetic valve power loss is opened, the automatic liquid water for excluding filter vat.
4. the pneumatic bow-lifting device of a kind of tramcar, using the described in any item tramcar of claims 1 to 3 with pneumatically The rising bow control method of bow-lifting device, it is characterised in that: pneumatic bow-lifting device includes the gas circuit case being connected with pantograph, the gas Road case is used to control the lifting of pantograph；
Gas circuit case includes energy source box, aerial cooler, moisture trap, blowoff electromagnetic valve, heater, particulate filter, AMT dry Dry device, overflow valve, pressure switch and check valve；
Energy source box includes oil-free air compressor, air filter and brshless DC motor；Air filter is arranged in oil-free sky The arrival end of air compressor, brshless DC motor provide power for oil-free air compressor；
The outlet end of oil-free air compressor is connected with the entrance of aerial cooler, the outlet and gas-water separation of aerial cooler The entrance of device is connected, and the blowoff electromagnetic valve is provided on moisture trap, the heater is provided on blowoff electromagnetic valve； The outlet of moisture trap is connected with particulate filter, and the outlet of particulate filter is connected with the entrance of AMT drier, It is connected with overflow valve, pressure switch and check valve on the export pipeline of AMT drier in turn, wherein pressure switch and brushless straight Galvanic electricity electrical-mechanical is connected.
5. the pneumatic bow-lifting device of tramcar according to claim 4, it is characterised in that: aerial cooler and air water point Safety valve and vibration damping cylinder are disposed on the pipeline being connected from device.
6. the pneumatic bow-lifting device of tramcar according to claim 4, it is characterised in that: blowoff electromagnetic valve be provided with The temperature sensor that heater is connected.
7. the pneumatic bow-lifting device of tramcar according to claim 4, it is characterised in that: oil-free air compressor is The oil-free piston type air compressor of 24V, single cylinder single stage compress, revolving speed 1400r/min, rated pressure 9bar.
8. the pneumatic bow-lifting device of tramcar according to claim 5, it is characterised in that: safety valve set pressure as 10.5bar。
9. the pneumatic bow-lifting device of tramcar according to claim 4, it is characterised in that: the pressure of overflow valve is 6.5bar。
10. the pneumatic bow-lifting device of tramcar according to claim 4, it is characterised in that: heater is resistance heating Device.
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CN201154670Y (en) * 2007-12-29 2008-11-26 章东利 Energy storage type bow-lifting device for dc electric locomotive
CN204641418U (en) * 2015-05-04 2015-09-16 天津联科思创科技发展有限公司 A kind of auxiliary lift device for collector bow
CN105329107A (en) * 2015-12-01 2016-02-17 瑞立集团瑞安汽车零部件有限公司 Bow raising air source system of railway vehicle

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