WO2012079260A1 - Control system and method for controlling maintenance vehicle braking cylinder of large size road maintainer - Google Patents

Control system and method for controlling maintenance vehicle braking cylinder of large size road maintainer Download PDF

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Publication number
WO2012079260A1
WO2012079260A1 PCT/CN2010/080084 CN2010080084W WO2012079260A1 WO 2012079260 A1 WO2012079260 A1 WO 2012079260A1 CN 2010080084 W CN2010080084 W CN 2010080084W WO 2012079260 A1 WO2012079260 A1 WO 2012079260A1
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WO
WIPO (PCT)
Prior art keywords
valve
pressure
brake cylinder
cylinder
air
Prior art date
Application number
PCT/CN2010/080084
Other languages
French (fr)
Chinese (zh)
Inventor
傅成骏
刘豫湘
刘泉
张彦林
方长征
毛金虎
黄金虎
张娟
Original Assignee
南车株洲电力机车有限公司
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Publication date
Application filed by 南车株洲电力机车有限公司 filed Critical 南车株洲电力机车有限公司
Priority to SG2013043021A priority Critical patent/SG190989A1/en
Publication of WO2012079260A1 publication Critical patent/WO2012079260A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof

Definitions

  • the invention mainly relates to the field of brake control systems in railway engineering maintenance vehicles, and particularly relates to a control method for a brake cylinder of a brake system of a large-scale road maintenance machine.
  • large-scale road maintenance machinery maintenance vehicles mainly use air brakes, which have insurmountable shortcomings, such as the function is not easy to expand, the steering command response is slow, the brake pressure of the brake cylinder is inconsistent (synchronization is poor), and the pipeline A large number of difficult vehicle arrangements and high failure rates.
  • the brake cylinder module uses a more advanced control method.
  • the technical problem to be solved by the present invention is to provide a control system and a control method for a brake cylinder of a brake system of a large-scale road maintenance machine, which can adopt a closed-loop control mode for the brake cylinder. , greatly improve the control accuracy of the brake cylinder pressure; can use the backup control mode of the brake cylinder to improve the reliability of the subway engineering maintenance vehicle; can use the auxiliary brake mode for the brake cylinder to ensure the emergency and distribution valve failure Next, the braking effect is generated in a short time, which can improve the safety of the maintenance vehicle of the large road maintenance machinery.
  • a control system for controlling a brake cylinder of a large-scale road maintenance machine including a closed-loop control portion of the brake cylinder, a backup brake control portion, and an auxiliary brake control portion.
  • the closed-loop control part of the brake cylinder is composed of its intake passage and exhaust passage.
  • the intake passage is connected by the total air control plug 13 connected to the output port of the main duct, the pressure regulating valve 1, and the intake high-speed electric air valve 2.
  • Electric air valve 4 wind
  • the cylinder 9, the distribution valve 10, the shuttle valve 16 and the brake cylinder 18 are connected in series, the air cylinder 9 is also connected with a pressure detecting port 8 and a pressure sensor 7;
  • the exhaust passage includes an exhaust high-speed electric air valve 3 and
  • the electropneumatic valve 5 is separately mitone, and the signal output end of the pressure sensor 7 is connected to the signal input end of the proportional controller 17, and the control output end of the proportional controller 17 is respectively coupled with the intake high-speed electric air valve 2 and the exhaust high speed.
  • the electropneumatic valve 3 is connected.
  • the backup brake control section includes an electric air valve 4, a distribution valve 10, a wind cylinder 9, a shuttle valve 16, and a brake cylinder 18 which are connected in series to the output of the train tube.
  • the auxiliary brake control portion is sequentially connected by the pressure regulating valve 12 connected to the brake pipe, the total air switching valve 11, the shuttle valve 16 and the brake cylinder 18; the control end of the total air switching valve 11 is connected to the electric air valve At the output of 6, the input of the electropneumatic valve 6 is connected to the output of the main duct.
  • the present invention also provides a control method for controlling a brake cylinder of a large road maintenance machine maintenance vehicle, which is characterized by:
  • the brake cylinder closed-loop control is performed:
  • the proportional controller 17 compares the target value with the real-time pressure value of the air cylinder 9 fed back by the pressure sensor 7 after receiving the target value command, and The comparison value is converted into a PWM signal, and the intake high-speed electric air valve 2 and the exhaust high-speed electric air valve 3 are controlled to adjust the pressure of the air cylinder 9, and the distribution valve 10 passes through the pressure flow value adjusted in the amplification air cylinder 9,
  • the wind pressure equal to the pressure in the air cylinder 9 but the flow rate is amplified is inserted into the brake cylinder 18; if it is necessary to separately relieve the wind pressure in the air cylinder 9, the individual relief air valve 5 is turned on 110V DC to achieve the wind Pressure alone.
  • the backup control is performed:
  • the electro-pneumatic valve 4 is de-energized, and the distribution valve 10 is controlled by an external control unit to adjust the train tube pressure output to control the brake cylinder pressure.
  • the control system and the control method for the brake cylinder of the brake system of the large-scale road maintenance machine of the present invention have the advantages of:
  • the brake cylinder backup control mode can improve the reliability of the large-scale road maintenance machinery maintenance vehicle
  • Brake cylinder auxiliary braking mode can ensure the braking effect in a short time under the condition of emergency and distribution valve failure, which can improve the safety of large maintenance machinery maintenance vehicles.
  • FIG. 1 is a schematic diagram of control of a brake cylinder for a brake system of a large-scale road maintenance machine according to an embodiment
  • the embodiment provides a control system for controlling a brake cylinder of a large maintenance machine, including a closed loop control portion, a backup control portion, and an auxiliary brake control portion.
  • pressure regulating valve 1 intake high speed electric air valve 2, exhaust high speed electric air valve 3, proportional controller 17, electric air valve 4, separate relief air valve 5, distribution valve 10, pressure sensor 7, pressure detection
  • the port 8, the air cylinder 9, the pressure sensor 14, the pressure detecting port 15, the shuttle valve 16, and the brake cylinder 18 constitute a closed-loop control mode of the brake cylinder.
  • the electropneumatic valve 4, the relief electropneumatic valve 5, the distribution valve 10, and the brake cylinder 18 constitute a backup control mode of the distribution valve.
  • the electropneumatic valve 6, the total air switching valve 11, the pressure regulating valve 12, and the shuttle valve 16 constitute an auxiliary brake control mode of the brake cylinder.
  • the brake cylinder Under normal conditions, the brake cylinder adopts the closed-loop control part of the brake cylinder. If the closed-loop control part fails, such as the proportional controller or the intake and exhaust high-speed electric air valve fails, the brake cylinder adopts the backup control mode; if the driver encounters an emergency In the case of the brake cylinder, the auxiliary control method can be used directly.
  • the closed-loop control part fails, such as the proportional controller or the intake and exhaust high-speed electric air valve fails
  • the brake cylinder adopts the backup control mode; if the driver encounters an emergency
  • the auxiliary control method can be used directly.
  • the total air control plug 13 is opened, the electropneumatic valve 4 is energized, the pressure of the pressure regulating valve 1 is adjusted to 450 kPa, and the pressure sensor 8 sends the pressure value of the air cylinder 9 to the proportional controller 17 in real time, proportional control
  • the device 17 receives the input target value command, compares the target value with the real-time pressure value of the air cylinder 9 fed back by the pressure sensor 7, and obtains a comparison value, and the proportional controller 17 converts it into a PWM signal for high-speed air intake.
  • the valve 2 and the exhaust high-speed electric air valve 3 are controlled to accurately control the pressure of the air cylinder 9, and the distribution valve 10 sends the pressure value equal to the pressure of the air cylinder 9 but the flow rate is amplified to the shuttle valve 16 in sequence, There is no pressure on the right side of the shuttle valve 16, and there is pressure on the left side. Finally, the shuttle valve supplies the pressure on the left side to the brake cylinder 18, thereby precisely controlling the pressure of the brake cylinder 18.
  • the pressure sensor 14 can measure the output pressure of the distribution valve 10 after the closed loop control through the pressure detecting port 15.
  • the pressure regulating valve 1 is a valve type member that is manually adjusted to limit the intake pressure, and the inlet pressure can be adjusted to a set pressure after passing through the unit.
  • the electropneumatic valve 4 is de-energized, and the passage for inflating and exhausting the air cylinder 9 by the closed-loop control is cut off.
  • the control of the distribution valve 10 is boosted and depressurized by the external operating member for the train pipe pressure. This is achieved so that the brake cylinder pressure is controlled by the distribution valve 10.
  • the electric air valve 6 connected to the total air duct is electrified, and the switching air path of the total air switching valve 11 is controlled.
  • the regulating pressure is 350 kPa
  • the total air passes through the pressure regulating valve 12
  • the brake cylinder pressure quickly reaches 350 kPa, and the brake cylinder generates an auxiliary braking action.
  • Pressure regulator 1 Make sure that the brake valve pressure is not higher than 450 kPa under any circumstances.
  • Pressure regulating valve 12 By adjusting the internal spring to change its setting value to ensure the auxiliary braking, the brake cylinder pressure after the total air switching valve 11 and shuttle valve 16 is not higher than 3. 5bar.
  • the individual mitigation of the electric air valve 5 can be relieved by manipulating the relevant components, thereby relieving the pressure in the air cylinder 9, thereby reducing the input pressure of the input distribution valve, and separately relieving the brake cylinder pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)
  • Regulating Braking Force (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

A control system and a control method for controlling the maintenance vehicle braking cylinder of a large size road maintainer comprise a closed loop control part, an auxiliary braking control part and a back-up braking control part. The closed loop control part is composed of an air inlet path and an air outlet path. The air cylinder in the inlet path is connected with a pressure sensor (7) whose signal output end is connected with the signal input end of a proportional controller (17). The output end of the proportional controller is connected with an air inlet high speed electric pneumatic valve (2) and an air outlet high speed electric pneumatic valve (3) individually.

Description

说 明 书  Description
用于控制大型养路机械维护车制动缸的控制系统及方法 技术领域  Control system and method for controlling brake cylinder of large maintenance road maintenance machine
本发明主要涉及到铁路工程维护车中制动控制系统领域， 特指一种用于大 型养路机械维护车制动系统制动缸的控制方式。  The invention mainly relates to the field of brake control systems in railway engineering maintenance vehicles, and particularly relates to a control method for a brake cylinder of a brake system of a large-scale road maintenance machine.
背景技术 Background technique
目前大型养路机械维护车主要采用的是空气制动机， 该空气制动机存在无 法克服的缺点， 如功能不易扩展、 操纵指令响应慢导致机车制动缸压力前后不 一致 （同步性差） 、 管路繁多不易整车设备布置且故障率较高等。  At present, large-scale road maintenance machinery maintenance vehicles mainly use air brakes, which have insurmountable shortcomings, such as the function is not easy to expand, the steering command response is slow, the brake pressure of the brake cylinder is inconsistent (synchronization is poor), and the pipeline A large number of difficult vehicle arrangements and high failure rates.
随着现代铁路技术的发展， 大型养路机械维护车越来越长， 控制精度和控 制的安全性要求越来越高， 为了适应铁路工程车这种技术发展需求， 需要对工 程车制动系统中的制动缸模块采用一种更为先进的控制方式。  With the development of modern railway technology, large-scale road maintenance machinery is getting longer and longer, and the control precision and control safety requirements are getting higher and higher. In order to meet the technical development needs of railway engineering vehicles, it is necessary to brake the engineering vehicle. The brake cylinder module uses a more advanced control method.
发明内容 Summary of the invention
针对现有技术存在的技术问题， 本发明要解决的技术问题是： 提供一种用 于大型养路机械维护车制动系统制动缸的控制系统及控制方法， 能够对制动缸 采用闭环控制方式， 大大提高制动缸压力的控制精度； 能够对制动缸采用后备 控制方式， 提高地铁工程维护车的可靠性； 能够对制动缸采用辅助制动方式， 确保在紧急和分配阀失效的情况下， 短时间内产生制动作用， 能提高大型养路 机械维护车的安全性。  In view of the technical problems existing in the prior art, the technical problem to be solved by the present invention is to provide a control system and a control method for a brake cylinder of a brake system of a large-scale road maintenance machine, which can adopt a closed-loop control mode for the brake cylinder. , greatly improve the control accuracy of the brake cylinder pressure; can use the backup control mode of the brake cylinder to improve the reliability of the subway engineering maintenance vehicle; can use the auxiliary brake mode for the brake cylinder to ensure the emergency and distribution valve failure Next, the braking effect is generated in a short time, which can improve the safety of the maintenance vehicle of the large road maintenance machinery.
本发明采用的技术方案是： 一种用于控制大型养路机械维护车制动缸的控 制系统， 包括制动缸闭环控制部分、 后备制动控制部分和辅助制动控制部分。  The technical solution adopted by the present invention is: A control system for controlling a brake cylinder of a large-scale road maintenance machine, including a closed-loop control portion of the brake cylinder, a backup brake control portion, and an auxiliary brake control portion.
制动缸闭环控制部分由其进气通路和排气通路组成， 进气通路由与总风管 的输出口连接的总风控制塞门 13、 调压阀 1、 进气高速电空阀 2、 电空阀 4、 风 缸 9、 分配阀 10、 梭阀 16和制动缸 18依次串接而成， 所述风缸 9还连接有压 力检测口 8和压力传感器 7;排气通路包括排气高速电空阀 3和单独缓解电空阀 5， 所述压力传感器 7 的信号输出端接入比例控制器 17的信号输入端， 所述比 例控制器 17的控制输出端分别与进气高速电空阀 2和排气高速电空阀 3连接。 The closed-loop control part of the brake cylinder is composed of its intake passage and exhaust passage. The intake passage is connected by the total air control plug 13 connected to the output port of the main duct, the pressure regulating valve 1, and the intake high-speed electric air valve 2. Electric air valve 4, wind The cylinder 9, the distribution valve 10, the shuttle valve 16 and the brake cylinder 18 are connected in series, the air cylinder 9 is also connected with a pressure detecting port 8 and a pressure sensor 7; the exhaust passage includes an exhaust high-speed electric air valve 3 and The electropneumatic valve 5 is separately mitone, and the signal output end of the pressure sensor 7 is connected to the signal input end of the proportional controller 17, and the control output end of the proportional controller 17 is respectively coupled with the intake high-speed electric air valve 2 and the exhaust high speed. The electropneumatic valve 3 is connected.
后备制动控制部分包括依次串接的接入列车管输出端的电空阀 4、 分配阀 10、 风缸 9、 梭阀 16和制动缸 18。  The backup brake control section includes an electric air valve 4, a distribution valve 10, a wind cylinder 9, a shuttle valve 16, and a brake cylinder 18 which are connected in series to the output of the train tube.
辅助制动控制部分由与制动管连接的调压阀 12、 总风切换阀 11、 梭阀 16 和制动缸 18依次连接而成； 所述总风切换阀 11的控制端连接电空阀 6的输出 端， 该电空阀 6的输入端与总风管的输出端连接。  The auxiliary brake control portion is sequentially connected by the pressure regulating valve 12 connected to the brake pipe, the total air switching valve 11, the shuttle valve 16 and the brake cylinder 18; the control end of the total air switching valve 11 is connected to the electric air valve At the output of 6, the input of the electropneumatic valve 6 is connected to the output of the main duct.
相应的， 本发明还提供一种用于控制大型养路机械维护车制动缸的控制方 法， 其特征是：  Correspondingly, the present invention also provides a control method for controlling a brake cylinder of a large road maintenance machine maintenance vehicle, which is characterized by:
在正常情况下， 进行制动缸闭环控制： 电空阀 4得电， 比例控制器 17接收 到目标值命令后， 将目标值与压力传感器 7反馈的风缸 9实时压力值进行比较， 并将比较值转变为 PWM信号， 对进气高速电空阀 2和排气高速电空阀 3进行控 制， 以调节风缸 9的压力， 分配阀 10通过放大风缸 9中调节的压力流量值， 将 与风缸 9中的压力相等但流量被放大的风压接入制动缸 18中； 如果需要单独缓 解风缸 9中的风压时， 将单独缓解电空阀 5接通 110V直流电， 实现风压单独缓 解。  Under normal circumstances, the brake cylinder closed-loop control is performed: When the electric air valve 4 is energized, the proportional controller 17 compares the target value with the real-time pressure value of the air cylinder 9 fed back by the pressure sensor 7 after receiving the target value command, and The comparison value is converted into a PWM signal, and the intake high-speed electric air valve 2 and the exhaust high-speed electric air valve 3 are controlled to adjust the pressure of the air cylinder 9, and the distribution valve 10 passes through the pressure flow value adjusted in the amplification air cylinder 9, The wind pressure equal to the pressure in the air cylinder 9 but the flow rate is amplified is inserted into the brake cylinder 18; if it is necessary to separately relieve the wind pressure in the air cylinder 9, the individual relief air valve 5 is turned on 110V DC to achieve the wind Pressure alone.
当制动缸闭环控制方式失效时， 进行后备控制： 电空阀 4 失电， 通过外部 操纵部件控制分配阀 10， 调节列车管压力输出， 以控制制动缸压力。  When the closed-loop control mode of the brake cylinder fails, the backup control is performed: The electro-pneumatic valve 4 is de-energized, and the distribution valve 10 is controlled by an external control unit to adjust the train tube pressure output to control the brake cylinder pressure.
当出现紧急情况时， 进行辅助控制： 电空阀 6得电， 总风管依次通过调压 阀 12， 总风切换阀 11和梭阀 16接入制动缸， 使其压力迅速达到 3. 5bar， 制动 缸产生辅助制动作用。 调压阀 12通过调整内部弹簧改变其整定值能确保进行辅助制动时， 通过总 风切换阀 11、 梭阀 16后的制动缸压力不高于 3. 5bar。 与现有技术相比， 本发明所述用于大型养路机械维护车制动系统制动缸的 控制系统及控制方法优点在于： In the case of an emergency, the pressure is quickly increased to 3. 5bar. The brake cylinder generates an auxiliary braking function. The pressure of the brake cylinder after the total air switching valve 11 and the shuttle valve 16 is not higher than 3. 5 bar. Compared with the prior art, the control system and the control method for the brake cylinder of the brake system of the large-scale road maintenance machine of the present invention have the advantages of:
1、 正常情况下， 对制动缸采用闭环控制方式， 能大大提高制动缸压力的控 制精度； 1. Under normal circumstances, the closed-loop control mode is adopted for the brake cylinder, which can greatly improve the control precision of the brake cylinder pressure;
2、 当制动缸闭环控制方式失效时， 采用制动缸后备控制方式能提高大型养 路机械维护车的可靠性； 2. When the closed-loop control mode of the brake cylinder fails, the brake cylinder backup control mode can improve the reliability of the large-scale road maintenance machinery maintenance vehicle;
3、 制动缸辅助制动方式， 能确保在紧急和分配阀失效的情况下， 短时间内 产生制动作用， 能提高大型养路机械维护车的安全性。 附图说明 3. Brake cylinder auxiliary braking mode can ensure the braking effect in a short time under the condition of emergency and distribution valve failure, which can improve the safety of large maintenance machinery maintenance vehicles. DRAWINGS
图 1是实施例所述用于大型养路机械维护车制动系统制动缸的控制原理图； 在附图中：  1 is a schematic diagram of control of a brake cylinder for a brake system of a large-scale road maintenance machine according to an embodiment;
I-调压阀 2-进气高速电空阀  I-pressure regulator 2-intake high-speed electric air valve
3-排气高速电空阀 4 -电空阀  3-Exhaust high speed electric air valve 4 - Electric air valve
5-单独缓解电空阀 6-电空阀  5-individual relief electric air valve 6-electric air valve
7-压力传感器 8-压力检测口  7-pressure sensor 8-pressure detection port
9-风缸 10-分配阀  9-wind cylinder 10-distribution valve
I I-总风切换阀 12-调压阀  I I-total air switching valve 12-pressure regulating valve
13-总风控制塞门 14-压力传感器  13-Total air control plug door 14-pressure sensor
15-压力检测口 16-梭阀  15-pressure detection port 16-boiler valve
17-比例控制器 18-制动缸  17-proportional controller 18-brake cylinder
具体实施方式 detailed description
以下将结合附图和具体实施例对本发明做进一步详细说明。 如图 1所示，本实施例提供一种用于控制大型养路机械维护车制动缸的控制 系统， 包括闭环控制部分、 后备控制部分和辅助制动控制部分。 其中， 调压阀 1， 进气高速电空阀 2， 排气高速电空阀 3， 比例控制器 17， 电空阀 4， 单独缓解电空阀 5， 分配阀 10， 压力传感器 7， 压力检测口 8， 风缸 9， 压力传感器 14， 压力检测口 15， 梭阀 16， 制动缸 18构成制动缸的闭环控制 方式。 电空阀 4， 单独缓解电空阀 5， 分配阀 10， 制动缸 18构成分配阀的后备 控制方式。 电空阀 6， 总风切换阀 11， 调压阀 12， 梭阀 16构成制动缸的辅助制 动控制方式。 The invention will be further described in detail below with reference to the drawings and specific embodiments. As shown in FIG. 1, the embodiment provides a control system for controlling a brake cylinder of a large maintenance machine, including a closed loop control portion, a backup control portion, and an auxiliary brake control portion. Among them, pressure regulating valve 1, intake high speed electric air valve 2, exhaust high speed electric air valve 3, proportional controller 17, electric air valve 4, separate relief air valve 5, distribution valve 10, pressure sensor 7, pressure detection The port 8, the air cylinder 9, the pressure sensor 14, the pressure detecting port 15, the shuttle valve 16, and the brake cylinder 18 constitute a closed-loop control mode of the brake cylinder. The electropneumatic valve 4, the relief electropneumatic valve 5, the distribution valve 10, and the brake cylinder 18 constitute a backup control mode of the distribution valve. The electropneumatic valve 6, the total air switching valve 11, the pressure regulating valve 12, and the shuttle valve 16 constitute an auxiliary brake control mode of the brake cylinder.
基于上述控制系统的控制方法的运行过程是：  The operation process based on the control method of the above control system is:
在正常情况下， 制动缸采用制动缸闭环控制部分， 如果闭环控制部分出现 故障如比例控制器或进排气高速电空阀故障， 制动缸就采用后备控制方式； 如 果司机遇到紧急情况时， 可以直接采用制动缸的辅助控制方式。  Under normal conditions, the brake cylinder adopts the closed-loop control part of the brake cylinder. If the closed-loop control part fails, such as the proportional controller or the intake and exhaust high-speed electric air valve fails, the brake cylinder adopts the backup control mode; if the driver encounters an emergency In the case of the brake cylinder, the auxiliary control method can be used directly.
在闭环控制时， 总风控制塞门 13开启， 电空阀 4得电， 调压阀 1的压力调 整到 450kPa， 压力传感器 8实时将风缸 9的压力值送给比例控制器 17， 比例控 制器 17接收到输入的目标值命令， 比较该目标值与压力传感器 7反馈的风缸 9 的实时压力值， 得出比较值， 比例控制器 17将其转换为 PWM信号， 对进气高速 电空阀 2和排气高速电空阀 3进行控制， 达到精确控制风缸 9的压力， 分配阀 10将与风缸 9的压力等值但流量进行了放大的压力值先后送至梭阀 16， 由于梭 阀 16右边没有压力， 左边有压力， 最后梭阀将左边的压力送给制动缸 18， 从而 精确控制制动缸 18的压力。 其中压力传感器 14可以通过压力检测口 15测定通 过闭环控制后分配阀 10的输出压力。  In the closed loop control, the total air control plug 13 is opened, the electropneumatic valve 4 is energized, the pressure of the pressure regulating valve 1 is adjusted to 450 kPa, and the pressure sensor 8 sends the pressure value of the air cylinder 9 to the proportional controller 17 in real time, proportional control The device 17 receives the input target value command, compares the target value with the real-time pressure value of the air cylinder 9 fed back by the pressure sensor 7, and obtains a comparison value, and the proportional controller 17 converts it into a PWM signal for high-speed air intake. The valve 2 and the exhaust high-speed electric air valve 3 are controlled to accurately control the pressure of the air cylinder 9, and the distribution valve 10 sends the pressure value equal to the pressure of the air cylinder 9 but the flow rate is amplified to the shuttle valve 16 in sequence, There is no pressure on the right side of the shuttle valve 16, and there is pressure on the left side. Finally, the shuttle valve supplies the pressure on the left side to the brake cylinder 18, thereby precisely controlling the pressure of the brake cylinder 18. The pressure sensor 14 can measure the output pressure of the distribution valve 10 after the closed loop control through the pressure detecting port 15.
其中调压阀 1 是一种通过手动调节从而限定进气压力的阀类部件， 进气压 力通过该部件后能调节到设定的压力。  The pressure regulating valve 1 is a valve type member that is manually adjusted to limit the intake pressure, and the inlet pressure can be adjusted to a set pressure after passing through the unit.
在后备控制部分， 电空阀 4失电， 切断了由闭环控制向风缸 9充气和排气 的通路， 此时分配阀 10的控制由外部操纵部件对列车管压力进行升压和减压控 制来实现， 从而由分配阀 10控制制动缸压力。 In the backup control section, the electropneumatic valve 4 is de-energized, and the passage for inflating and exhausting the air cylinder 9 by the closed-loop control is cut off. At this time, the control of the distribution valve 10 is boosted and depressurized by the external operating member for the train pipe pressure. This is achieved so that the brake cylinder pressure is controlled by the distribution valve 10.
在辅助控制部分， 与总风管连接的电空阀 6得电， 控制总风切换阀 11的切 换风路， 总风通过调压阀 12后调节压力为 350kPa， 总风通过调压阀 12、 切换 阀 11， 梭阀 16后制动缸压力迅速达到 350kPa， 制动缸产生辅助制动作用。  In the auxiliary control part, the electric air valve 6 connected to the total air duct is electrified, and the switching air path of the total air switching valve 11 is controlled. After the total air passes through the pressure regulating valve 12, the regulating pressure is 350 kPa, and the total air passes through the pressure regulating valve 12, After switching valve 11, after the shuttle valve 16, the brake cylinder pressure quickly reaches 350 kPa, and the brake cylinder generates an auxiliary braking action.
调压阀 1 确保分配阀在任何情况下， 制动缸压力不高于 450kPa。调压阀 12 通过调整内部弹簧改变其整定值能确保进行辅助制动时， 通过总风切换阀 11、 梭阀 16后的制动缸压力不高于 3. 5bar。  Pressure regulator 1 Make sure that the brake valve pressure is not higher than 450 kPa under any circumstances. Pressure regulating valve 12 By adjusting the internal spring to change its setting value to ensure the auxiliary braking, the brake cylinder pressure after the total air switching valve 11 and shuttle valve 16 is not higher than 3. 5bar.
需要单独缓解制动缸风缸时， 通过操纵相关部件让单独缓解电空阀 5得电， 缓解风缸 9 中的压力， 从而减少输入分配阀的输入压力， 能单独缓解制动风缸 压力。  When the brake cylinder air cylinder needs to be separately relieved, the individual mitigation of the electric air valve 5 can be relieved by manipulating the relevant components, thereby relieving the pressure in the air cylinder 9, thereby reducing the input pressure of the input distribution valve, and separately relieving the brake cylinder pressure.

Claims

权利要求书 Claim
1、 一种用于控制大型养路机械维护车制动缸的控制系统， 其特征是， 包括 制动缸闭环控制部分、 后备制动控制部分和辅助制动控制部分：  A control system for controlling a brake cylinder of a large-scale road maintenance machine, comprising: a closed-loop control portion of the brake cylinder, a backup brake control portion and an auxiliary brake control portion:
所述制动缸闭环控制部分由进气通路和排气通路组成， 进气通路由与总风 管的输出口连接的总风控制塞门 （13)、 调压阀 （1)、 进气高速电空阀 （2)、 电 空阀 （4)、 风缸 （9)、 分配阀 （10)、 梭阀（16)和制动缸（18)依次串接而成， 所 述风缸 (9)还连接有压力检测口（8)和压力传感器 (7); 排气通路包括排气高速电 空阀（3)和单独缓解电空阀（5)， 所述压力传感器 (7) 的信号输出端接入比例控 制器（17)的信号输入端， 所述比例控制器（17)的控制输出端分别与进气高速电 空阀（2)和排气高速电空阀（3)连接；  The closed-loop control portion of the brake cylinder is composed of an intake passage and an exhaust passage, and the intake passage is connected by a total air control plug (13), a pressure regulating valve (1), and an intake high speed connected to an output port of the total duct. The electropneumatic valve (2), the electropneumatic valve (4), the air cylinder (9), the distribution valve (10), the shuttle valve (16) and the brake cylinder (18) are sequentially connected in series, and the air cylinder (9) ) a pressure detecting port (8) and a pressure sensor (7) are also connected; the exhaust passage includes an exhaust high-speed electric air valve (3) and a separate mitigation electric valve (5), and the signal output of the pressure sensor (7) The terminal is connected to the signal input end of the proportional controller (17), and the control output end of the proportional controller (17) is respectively connected with the intake high-speed electric air valve (2) and the exhaust high-speed electric air valve (3);
后备制动控制部分包括依次串接的接入列车管输出端的电空阀 （4)、 分配 阀 （10)、 风缸 （9)、 梭阀 (16) 和制动缸 (18);  The backup brake control portion includes an electric air valve (4), a distribution valve (10), a wind cylinder (9), a shuttle valve (16) and a brake cylinder (18) which are connected in series to the output of the train tube;
辅助制动控制部分由与制动缸管连接的调压阀 （12)、 总风切换阀 （11)、 梭阀 （16) 和制动缸 （18) 依次连接而成； 所述总风切换阀 （11) 的控制端连 接电空阀 （6) 的输出端， 该电空阀 （6) 的输入端与总风管的输出端连接。  The auxiliary brake control portion is sequentially connected by a pressure regulating valve (12) connected to the brake cylinder tube, a total air switching valve (11), a shuttle valve (16) and a brake cylinder (18); The control end of the valve (11) is connected to the output of the electropneumatic valve (6), and the input of the electropneumatic valve (6) is connected to the output of the main air duct.
2、一种与权利要求 1 相对应的用于控制大型养路机械维护车制动缸的控制 方法， 其特征是：  2. A control method for controlling a brake cylinder of a large road maintenance machine maintenance vehicle corresponding to claim 1, characterized in that:
在正常情况下， 进行制动缸闭环控制： 电空阀 （4)得电， 比例控制器（17) 接收到目标值命令后， 将目标值与压力传感器 （7) 反馈的风缸 （9) 实时压力 值进行比较， 并将比较值转变为 PWM信号， 对进气高速电空阀 （2) 和排气高速 电空阀 （3) 进行控制， 以调节风缸 （9) 的压力， 分配阀 （10) 通过放大风缸 (9) 中调节的压力流量值， 将与风缸 （9) 中的压力相等但流量被放大的风压 接入制动缸 （18) 中； 如果需要单独缓解风缸 （9) 中的风压时， 将单独缓解电 空阀 （5) 接通 110V直流电， 实现风压缓解； Under normal conditions, the brake cylinder closed-loop control: The electro-pneumatic valve (4) is energized, and the proportional controller (17) receives the target value command and sends the target value to the pressure sensor (7). The real-time pressure values are compared, and the comparison value is converted into a PWM signal, and the intake high-speed electric air valve (2) and the exhaust high-speed electric air valve (3) are controlled to adjust the pressure of the air cylinder (9), the distribution valve (10) By amplifying the pressure flow value adjusted in the air cylinder (9), the wind pressure equal to the pressure in the air cylinder (9) but the flow rate is amplified is inserted into the brake cylinder (18); When the wind pressure in the cylinder (9) is used, the electricity will be separately relieved. The air valve (5) is connected to 110V DC to achieve wind pressure relief;
当制动缸闭环控制方式失效时， 进行后备控制： 电空阀 （4) 失电， 通过外 部操纵部件控制分配阀 （10)， 调节列车管压力输出， 以控制制动缸压力；  When the closed-loop control mode of the brake cylinder fails, the backup control is performed: The electric air valve (4) is de-energized, and the distribution valve (10) is controlled by an external control unit to adjust the train tube pressure output to control the brake cylinder pressure;
当出现紧急情况时， 进行辅助控制： 电空阀 （6) 得电， 总风管依次通过调 压阀（12)，总风切换阀（11)和梭阀（16)接入制动缸，使其压力迅速达到 3.5bar， 制动缸产生辅助制动作用。  In case of emergency, auxiliary control is carried out: The electropneumatic valve (6) is energized, the total air duct passes through the pressure regulating valve (12) in turn, and the total air switching valve (11) and the shuttle valve (16) are connected to the brake cylinder. The pressure is quickly reached to 3.5 bar, and the brake cylinder produces an auxiliary brake.
PCT/CN2010/080084 2010-12-13 2010-12-22 Control system and method for controlling maintenance vehicle braking cylinder of large size road maintainer WO2012079260A1 (en)

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