WO2019096111A1 - Locomotive et son dispositif de frein de secours - Google Patents

Locomotive et son dispositif de frein de secours Download PDF

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Publication number
WO2019096111A1
WO2019096111A1 PCT/CN2018/115158 CN2018115158W WO2019096111A1 WO 2019096111 A1 WO2019096111 A1 WO 2019096111A1 CN 2018115158 W CN2018115158 W CN 2018115158W WO 2019096111 A1 WO2019096111 A1 WO 2019096111A1
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WO
WIPO (PCT)
Prior art keywords
backup
valve
pressure
backup brake
air cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/115158
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English (en)
Chinese (zh)
Inventor
黎丹
方长征
毛金虎
曾萍
邓李平
黄金虎
李振民
易艳武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CRRC Zhuzhou Locomotive Co Ltd
Original Assignee
CRRC Zhuzhou Locomotive Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CRRC Zhuzhou Locomotive Co Ltd filed Critical CRRC Zhuzhou Locomotive Co Ltd
Publication of WO2019096111A1 publication Critical patent/WO2019096111A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
    • B61H11/06—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes
    • B61H11/10—Aerodynamic brakes with control flaps, e.g. spoilers, attached to the vehicles

Definitions

  • the invention relates to the technical field of rail vehicles, and in particular to a backup brake device for a locomotive.
  • the invention also relates to a locomotive comprising the above described backup brake device.
  • a locomotive in order to enable the rail vehicle to effectively brake in the event of a fault and prevent the occurrence of an accident, a locomotive is generally provided with a backup brake device, and the backup brake relieves the train tube to achieve locomotive braking.
  • the backup brake relieves the train tube to achieve locomotive braking.
  • the operator When the locomotive needs to start the backup brake, the operator must first place the backup brake valve handle in the braking position, and the braking effect will be generated after staying for a period of time.
  • the lag of the backup brake is especially Obviously, the hysteresis of the braking effect will make the driver inconvenient to operate, and it is easy to cause an accident during the lag period.
  • the present invention provides a locomotive backup brake device, comprising a backup brake relay valve connected to a train pipe and capable of reducing a train pipe pressure to realize a train backup brake, and the backup brake a relay valve connected to the backup main pipe to reduce a pre-control pressure of the backup brake relay valve to reduce the train brake pressure of the backup brake relay valve, the backup brake valve also being connected in parallel a pressure relief air cylinder for dividing a pressure of the backup main engine to reduce a pre-control pressure of the backup brake relay valve when the locomotive performs backup braking, and the pressure relief air cylinder is disposed between the backup air cylinder and the backup main cylinder There are controls for controlling the connection and disconnection of the two.
  • control device is a pneumatic 2/2-way reversing valve.
  • An equalizing air cylinder for stabilizing the pre-control pressure of the backup brake relay valve is disposed on the backup main pipe, and an air inlet of the pneumatic two-position three-way reversing valve is connected to the equalizing air cylinder, An air outlet of the pneumatic 2/2-way reversing valve is connected to the pressure relief air cylinder, and a control port of the pneumatic 2/2-way reversing valve is connected to the backup main pipe via the branch line at the equalization air cylinder and a pipe section between the backup brake valves; the pneumatic 2/2-way reversing valve includes a spring for realizing resetting of the pneumatic 2/2-way reversing valve;
  • the pneumatic 2/2-way reversing valve When the pre-control pressure drops insufficient to press the spring, the pneumatic 2/2-way reversing valve is switched to a position where the equalization air cylinder and the pressure relief air cylinder are connected; when the pre-control pressure can suppress the In the case of a spring, the pneumatic 2/2-way directional control valve is switched to a position where the equalization air cylinder outlet is sealed and the pressure relief air cylinder is depressurized.
  • the backup brake valve is further connected to the total air duct, and the total air duct is pressurized by the backup brake valve to the control port of the backup main pipe and the pneumatic 2/2-way reversing valve, A pressure regulating valve for controlling the charging speed is provided between the backup brake valve and the total air duct.
  • a pipeline between the pressure relief air cylinder and the backup main pipe is a branch line, and a pipe section between the branch line and the equalization air cylinder is disposed on the pipe section of the backup main pipe to limit the equalization
  • a current limiting device for the charging speed of the air cylinder is
  • the current limiting device is a shrinkage cavity.
  • a pressure measuring device connected to the pressure relief cylinder for measuring the internal pressure thereof is further included.
  • a prompting means for prompting when the control device communicates the backup main pipe and the pressure relief air cylinder is further included.
  • a pressure regulating device connected to the pressure measuring device for adjusting the internal pressure of the pressure relief cylinder is further included.
  • the present invention also provides a locomotive characterized by comprising the locomotive backup brake device of any of the above.
  • the prior art relieves pressure to the atmosphere through the backup brake valve, reduces the pre-control pressure of the backup brake relay valve, and causes the backup brake relay valve to enter the pressure relief state, thereby reducing the train pipe pressure and realizing vehicle braking.
  • the prior art requires that the backup brake valve stays in the relief valve position for a long time to reach the pre-control pressure required for the backup brake relay valve to be depressurized, which causes a long lag in the backup brake of the locomotive.
  • the backup main pipe is connected to the pressure relief air cylinder.
  • the backup brake valve is released to the atmosphere, so that the preset control pressure of the backup brake relay valve is lowered; the control device will reserve the backup supervisor
  • the pressure relief air cylinder is connected to enable the backup mains to release pressure to the pressure relief air cylinder, and also to reduce the pre-control pressure of the backup brake relay valve.
  • the backup supervisor releases the pressure to the atmosphere and the pressure relief air cylinder at the same time, so that the pre-control pressure of the backup brake relay valve is quickly reduced to the pre-control pressure value required for braking, thereby realizing rapid braking of the locomotive. Therefore, the backup brake device provided by the invention can enable the locomotive to quickly realize the backup brake, shorten the lag time of the backup brake, and reduce the risk of accidents.
  • Figure 1 is a schematic view of a specific embodiment of the present invention.
  • FIG. 2 is a schematic diagram showing the connection relationship between the branch line and the backup main pipe
  • Figure 3 (a) is a schematic view showing the connection state when the pneumatic 2/2-way reversing valve is in the I valve position;
  • Fig. 3(b) is a schematic view showing the connection state of the pneumatic 2/2-way reversing valve in the II position.
  • FIG. 1 is a schematic diagram of a specific embodiment of the present invention
  • FIG. 2 is a schematic diagram of a connection relationship between a branch line and a backup main pipe
  • a) is the schematic diagram of the connection condition when the pneumatic 2/2-way reversing valve is in the I valve position
  • Fig. 3(b) is the connection diagram when the pneumatic 2/2-way reversing valve is in the II valve position.
  • the backup brake device of the locomotive includes a backup brake relay valve 2.
  • the backup brake relay valve 2 is connected to the train pipe and has a function of decompressing, holding and relieving the train pipe. The locomotive brakes when the train pipe is released.
  • the backup brake relay valve 2 is controlled by a pre-control pressure. When the pre-control pressure is reduced to a certain value, the backup brake relay valve 2 enters a pressure relief state, and the train tube is controlled to release pressure, thereby causing the locomotive to generate braking.
  • the backup brake relay valve 2 is connected to the backup brake valve 1 through the backup main pipe 4. After the backup brake valve 1 is opened to the braking position, it is exhausted to the atmosphere, and the preset pressure of the backup brake relay valve 2 is lowered.
  • a pressure relief cylinder 7 is connected to the backup main pipe 4.
  • the backup main pipe 4 and the pressure relief air cylinder 7 are controlled by a control device. After the control device communicates the pressure relief cylinder 7 with the backup main pipe 4, the backup main pipe 4 can release the pressure to the pressure relief cylinder 7. If the backup supervisor 4 simultaneously releases pressure to the atmosphere and the pressure relief cylinder 7, the pre-control pressure can be quickly reduced to the pressure value required for the pressure relief state of the backup brake relay valve 2, thereby achieving rapid braking of the train.
  • the backup main cylinder 4 is usually provided with a balancing air cylinder 5.
  • the equalization air cylinder divides the backup main pipe 4 into a first pipe section 41 and a second pipe section 42.
  • the first pipe section 41 is connected to the backup brake relay valve 2 and the equalization air cylinder 5.
  • the equalizing air cylinder 5 has a large volume, and can play a certain buffering effect on the change of the pre-control pressure, thereby preventing the backup brake relay valve 2 from malfunctioning.
  • a pneumatic two-position three-way reversing valve 6 is used as a control device.
  • the pneumatic 2/2-way reversing valve 6 includes a valve body, a valve stem and a return spring.
  • the valve body is provided with a control port, an air inlet and an air outlet.
  • the gas entering the valve body from the control port acts on the valve stem, and the direction of the force is opposite to the elastic force applied by the return spring to the valve stem.
  • the valve stem is switched to the I valve position under the action of the air pressure to isolate the air inlet from the air outlet.
  • the spring pushes the pneumatic 2/2-way reversing valve 6 to reset, so that the air inlet and the air outlet are connected.
  • the control port of the pneumatic 3/2-way reversing valve 6 is connected to the second pipe section 42 via a branch line 642.
  • the control pressure of the pneumatic 2/2-way reversing valve 6 is equal to the pre-control pressure in the backup main pipe 4.
  • the intake port of the pneumatic two-position three-way selector valve 6 is connected to the equalization air cylinder 5.
  • the air outlet of the pneumatic 2/2-way reversing valve 6 is connected to the pressure relief cylinder 7.
  • the control pressure is greater than the spring force.
  • the spring is in a compressed state, and the pneumatic 2/2-way reversing valve 6 is in the I valve position.
  • the equalizing air cylinder 5 stops.
  • the pressure relief, pressure relief cylinder 7 is connected to the atmosphere.
  • the backup brake valve 1 When the backup brake valve 1 is opened to the braking position, the backup main pipe 4 is released to the atmosphere, the pre-control pressure is lowered, and the control pressure of the pneumatic 2/2-way reversing valve 6 is also lowered, when the control pressure is less than the spring action.
  • the spring releases the elastic potential energy, and under the action of the spring, the pneumatic 2/2-way reversing valve 6 is switched to the II valve position, as shown in FIG. 3(b) of the specification, the equalizing air cylinder 5 and the pressure relief wind
  • the cylinder 7 is connected to cause the backup main pipe 4 to simultaneously release pressure to the atmosphere and the backup air cylinder 7.
  • the intake port of the pneumatic 2/2-way reversing valve 6 is connected to the equalizing cylinder 5, which is a preferred embodiment.
  • the intake port may also be connected to the first pipe section 41 or the second pipe section 4.
  • the inlet of the pneumatic 2/2-way reversing valve can also be directly connected to the backup main pipe 4.
  • the control device can adopt other types of control valves in addition to the pneumatic two-position three-way reversing valve provided in this embodiment.
  • an electromagnetic two-position three-way reversing valve is connected to the backup brake valve through a circuit.
  • the circuit is powered by an independent battery pack.
  • the circuit of the electromagnetic two-position three-way reversing valve is turned on, and the electromagnetic two-position three-way reversing valve operates to equalize the wind.
  • the cylinder 5 is in communication with the pressure relief cylinder 4.
  • the pressure relief cylinder 7 communicates with the balance cylinder 5 when performing backup braking.
  • the volume of the pressure relief cylinder 7 is adapted to the volume of the balance cylinder 5. It is necessary to satisfy the pre-control pressure that the pre-control pressure can reach the pressure relief of the backup brake relay valve 2 when the balance air cylinder 5 and the pressure relief air cylinder 7 reach the pressure balance.
  • the braking process of the backup brake device of the embodiment is: the operator switches the backup brake valve 1 to the braking position, and the backup brake valve 1 opens to release pressure to the atmosphere, so that the preset brake pressure of the backup brake relay valve 2 Lowering, at the same time, the control pressure of the pneumatic 2/2-way reversing valve 6 is also reduced, and the pneumatic 2/2-way reversing valve 6 is switched to the II valve position under the action of the spring elastic force, and the equalizing air cylinder 5 and the pressure relief are
  • the air cylinder 7 is connected to allow the equalizing air cylinder 5 to be released from the pressure releasing cylinder 7, thereby rapidly reducing the pre-control pressure.
  • the backup brake relay valve 2 enters the pressure relief state, so that the pressure in the train tube is lowered and the vehicle generates braking.
  • the present invention provides a pressure relief air cylinder 7 in the backup brake device, so that the backup main pipe 4 can simultaneously release pressure to the atmosphere and the pressure relief air cylinder 7, thereby enabling the backup brake relay valve 2 to quickly enter the pressure relief state and complete the locomotive system. Dynamically, the lag time of the backup brake is greatly shortened.
  • the backup brake valve 1 is connected to the total air duct.
  • the backup brake valve 1 is switched to the relief position, the total air duct is pressurized to the backup main pipe 4 through the backup brake valve 1, the total air duct and the backup brake.
  • a pressure regulating valve 3 is provided between the valves 1, and the pressure regulating valve 3 can adjust the charging speed.
  • the structure of the backup brake valve 1 can be referred to the prior art.
  • the present embodiment provides a current limiting device on the second pipe section 42.
  • the flow restricting device is located between the branch line 642 and the equalizing cylinder 5.
  • the current limiting device is specifically a shrinkage hole 8.
  • the backup main pipe 4 is connected with a backup brake relay valve 2, a balance air cylinder 5, a shrinkage hole 8, a branch line, and a backup brake valve 1 from bottom to top.
  • the current limiting device in this embodiment may also adopt other forms such as a current limiting orifice plate.
  • the pressure relief cylinder 7 can be released from pressure to the atmosphere, and can be released to other equipment or devices, which is not limited herein.
  • a current limiting device is disposed between the branch line 642 and the equalizing cylinder 5.
  • the current limiting device can limit the flow of gas to the equalization air cylinder 5, so that the pressure of the control port of the pneumatic 2/2-way reversing valve 6 can be rapidly increased, and the pneumatic 2/2-way reversing valve 6 Switching from the II valve position to the I valve position, the pressure relief air cylinder 7 is isolated from the equalization air cylinder 5, reducing the charging volume and accelerating the charging speed.
  • the pressure relief cylinder 7 When the pneumatic 2/2-way reversing valve is in the I valve position, the pressure relief cylinder 7 is open to the atmosphere, and the pressure in the pressure relief cylinder 7 is equal to the atmospheric pressure, because the pressure in the pressure relief cylinder 7 affects the equilibrium wind.
  • the pressure value of the pressure balance between the cylinder 5 and the pressure relief cylinder 7 is affected by the temperature and humidity.
  • a pressure measuring device is arranged on the pressure relief cylinder 7. In order to detect the pressure of the pressure relief cylinder 7, the pressure measuring device can refer to the air pressure measuring device of the prior art.
  • a pressure regulating device can be further disposed on the pressure relief cylinder 7.
  • the pressure regulating device is connected to the pressure measuring device.
  • the pressure regulating device can be a pressure reducing valve or a pressure regulating fan driven by a backup power source. For details, refer to the pressure regulating device in the prior art.
  • a pressure measuring device and a pressure regulating device are disposed on the pressure relief cylinder 7, and the pressure of the pressure relief cylinder 7 can be adjusted when the pressure in the pressure relief cylinder 7 exceeds an expected value, thereby reducing the pressure relief wind.
  • the pressure in the cylinder 7 ensures the stability of the operation of the pressure relief cylinder 7.
  • the backup brake valve 1 needs to be opened to the braking position by manual operation. If the locomotive completes the braking, the backup brake valve 1 is not switched to the pressure maintaining position, which may cause unnecessary pressure loss.
  • a reminder device is provided in the vicinity of the backup brake valve 1, and the reminder device is a pressure switch connected to the pressure relief cylinder 7. When the pressure relief cylinder 7 reaches the preset pressure value, the pressure switch is opened, and after the operator sees that the pressure switch is turned on, the backup brake valve 1 can be closed to reduce the loss of the pre-control pressure.
  • the reminder device is not limited to the pressure switch, but can also adopt other various forms, for example, the indicator light is used as the reminding device, the indicator light is powered by the battery, and the circuit of the indicator light is connected with the pneumatic two-position three-way reversing valve 6, when the pneumatic two position When the three-way reversing valve is switched to the II valve position, the circuit is turned on, and the indicator light located in the circuit lights up to remind the operator to close the backup brake valve 1.
  • This embodiment adds a reminder device to the backup brake device.
  • the reminder device can alert the operator to close the backup brake valve 1, thereby avoiding unnecessary pre-control pressure loss.
  • the locomotive provided by the present invention includes the backup brake device described in the above specific embodiments; other parts of the locomotive can refer to the prior art and will not be developed herein.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

L'invention concerne un dispositif de frein de secours pour locomotive qui comprend une soupape de relais de frein de secours (2) reliée à un tuyau de frein, et une soupape de frein de secours (1) reliée à la soupape de relais de frein de secours (2) au moyen d'un tuyau principal de secours (4), un cylindre d'air limiteur de pression (7) étant relié à la soupape de frein de secours (1) en parallèle, un dispositif de commande étant disposé entre le cylindre d'air limiteur de pression (7) et le tuyau principal de secours (4) pour commander la liaison et la séparation de ces derniers. Après l'ouverture de la soupape de frein de secours (1), le dispositif de frein de secours peut relier le tuyau principal de secours (4) au cylindre d'air limiteur de pression (7), de telle sorte que le tuyau principal de secours (4) réduit la pression tant vers l'atmosphère que vers le cylindre d'air limiteur de pression (7), ce qui permet de réduire le retard temporel du frein et de réduire le risque d'accidents.
PCT/CN2018/115158 2017-11-14 2018-11-13 Locomotive et son dispositif de frein de secours Ceased WO2019096111A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201711122664.5A CN107914730B (zh) 2017-11-14 2017-11-14 一种机车及其后备制动设备
CN201711122664.5 2017-11-14

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WO2019096111A1 true WO2019096111A1 (fr) 2019-05-23

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WO (1) WO2019096111A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107914730B (zh) * 2017-11-14 2019-06-07 中车株洲电力机车有限公司 一种机车及其后备制动设备
US10994710B2 (en) 2019-01-16 2021-05-04 Cattron North America, Inc. Systems and methods for vehicle braking control
CN109649430A (zh) * 2019-01-25 2019-04-19 中车青岛四方机车车辆股份有限公司 一种列车制动隔离的设备、方法及系统
CN110116737B (zh) * 2019-06-05 2022-06-10 湖南中车时代通信信号有限公司 一种机车自动制动的控制装置及方法
CN111845685A (zh) * 2020-07-17 2020-10-30 中车青岛四方车辆研究所有限公司 一种具有单向呼吸功能的制动控制单元
CN112248998A (zh) * 2020-10-23 2021-01-22 中车株洲电力机车有限公司 一种均衡风缸故障检测、导向方法及故障检测、导向装置
CN115556798B (zh) * 2022-10-14 2024-04-12 中车制动系统有限公司 机车列车管压力控制系统及控制方法
CN117644887B (zh) * 2024-01-19 2026-04-21 中车制动系统有限公司 一种空气后备制动系统及机车

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CN2274160Y (zh) * 1996-02-01 1998-02-11 上海铁路局 铁路列车自动常用制动接口装置
RU2292278C2 (ru) * 2004-10-07 2007-01-27 Учреждение образования "Белорусский государственный университет транспорта" Тормозная система железнодорожного транспортного средства
RU2317902C2 (ru) * 2005-06-03 2008-02-27 Учреждение образования "Белорусский государственный университет транспорта" Тормозная система железнодорожного транспортного средства
CN103434504A (zh) * 2013-09-11 2013-12-11 中国北车集团大同电力机车有限责任公司 空气备用制动系统及制动方法
CN104709268A (zh) * 2015-01-04 2015-06-17 南车株洲电力机车有限公司 一种铁路机车车辆及其气路切除系统和控制方法
CN107226077A (zh) * 2017-06-13 2017-10-03 中车株洲电力机车有限公司 一种机车及其气控后备制动控制系统
CN107914730A (zh) * 2017-11-14 2018-04-17 中车株洲电力机车有限公司 一种机车及其后备制动设备

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2274160Y (zh) * 1996-02-01 1998-02-11 上海铁路局 铁路列车自动常用制动接口装置
RU2292278C2 (ru) * 2004-10-07 2007-01-27 Учреждение образования "Белорусский государственный университет транспорта" Тормозная система железнодорожного транспортного средства
RU2317902C2 (ru) * 2005-06-03 2008-02-27 Учреждение образования "Белорусский государственный университет транспорта" Тормозная система железнодорожного транспортного средства
CN103434504A (zh) * 2013-09-11 2013-12-11 中国北车集团大同电力机车有限责任公司 空气备用制动系统及制动方法
CN104709268A (zh) * 2015-01-04 2015-06-17 南车株洲电力机车有限公司 一种铁路机车车辆及其气路切除系统和控制方法
CN107226077A (zh) * 2017-06-13 2017-10-03 中车株洲电力机车有限公司 一种机车及其气控后备制动控制系统
CN107914730A (zh) * 2017-11-14 2018-04-17 中车株洲电力机车有限公司 一种机车及其后备制动设备

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