WO2020062404A1 - Hydraulic braking control unit having empty-load braking function - Google Patents

Hydraulic braking control unit having empty-load braking function Download PDF

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Publication number
WO2020062404A1
WO2020062404A1 PCT/CN2018/112997 CN2018112997W WO2020062404A1 WO 2020062404 A1 WO2020062404 A1 WO 2020062404A1 CN 2018112997 W CN2018112997 W CN 2018112997W WO 2020062404 A1 WO2020062404 A1 WO 2020062404A1
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WIPO (PCT)
Prior art keywords
solenoid valve
control unit
valve
conversion function
pressure regulating
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PCT/CN2018/112997
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French (fr)
Chinese (zh)
Inventor
孟玉发
张斌
禄晓鹏
柳志华
肖阳华
孙川
郭力
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中车资阳机车有限公司
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Publication of WO2020062404A1 publication Critical patent/WO2020062404A1/en

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    • 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
    • B60T13/12—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 the fluid being liquid
    • B60T13/14—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 the fluid being liquid using accumulators or reservoirs fed by pumps
    • 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
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B60T17/228—Devices for monitoring or checking brake systems; Signal devices for railway vehicles

Definitions

  • the invention relates to a hydraulic brake system, and in particular to a hydraulic brake control unit with an empty weight conversion function.
  • the hydraulic braking system for urban rail trains has functions such as common braking, rapid braking, and safe braking.
  • Common braking and rapid braking detect train load information through a dedicated load detection system.
  • the braking system calculates the required load according to the load.
  • Braking force to ensure the braking function of the train.
  • the safety brake has only a fixed set value and cannot be adjusted according to the load. The same braking force is applied regardless of the load. There is a problem that the braking force is large at no load. However, due to the empty and heavy load ratio of urban rail trains The changes are small and have no effect on braking safety.
  • Freight trains have very large changes in empty and heavy loads. If the braking force is set at heavy load during safe braking, the braking force will exceed the brake sticking at no load, and the train will coast and affect the driving safety. If the safe braking force is installed, Set at no load, the braking force is too small during heavy load, and it will no longer be able to stop within a safe distance, affecting driving safety.
  • the existing hydraulic braking system does not meet the requirements for the operation of freight trains.
  • the technical problem to be solved by the present invention is to provide a hydraulic brake control unit with an empty weight conversion function in response to the problems mentioned above.
  • a hydraulic brake control unit with an empty weight conversion function which specifically includes an accumulator, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fifth solenoid valve, and a second A sensor, a first pressure regulating valve, a second pressure regulating valve, the accumulator is connected to a first pressure regulating valve or a second pressure regulating valve, and the first pressure regulating valve or a second pressure regulating valve is connected to a fifth solenoid valve
  • the first pressure regulating valve or the second pressure regulating valve is used to control the rapid braking of the no-load signal or the rapid braking of the heavy load signal, and the accumulator is also connected to the first solenoid valve or the second solenoid valve.
  • the first solenoid valve or the second solenoid valve or the fifth solenoid valve is connected to a third solenoid valve, and the first solenoid valve or the second solenoid valve is used to control a common brake mitigation state or a common brake,
  • the third solenoid valve is connected to a brake cylinder, and the second sensor is used to detect the pressure of the brake cylinder.
  • the hydraulic brake control unit with an empty weight conversion function further includes a filter, an oil pump, a check valve, and a first sensor, the filter, the oil pump, and the check valve are connected in sequence, and the check valve is connected
  • the oil is delivered to the accumulator, and the pressure first sensor is used to detect the accumulator hydraulic pressure and control the start and stop of the oil pump.
  • the hydraulic brake control unit with an empty weight conversion function further includes a third pressure regulating valve, the third pressure regulating valve is connected to a check valve, and is connected in parallel with a filter and an oil pump.
  • the hydraulic brake control unit with an empty weight conversion function further includes a button, and the button manually relieves braking.
  • the hydraulic brake control unit with an empty weight conversion function further includes a fourth solenoid valve, and when the fourth solenoid valve is powered, the brake cylinder is cut off.
  • the hydraulic brake control unit with an empty weight conversion function further includes a pressure switch, which is used to provide a warning signal after cutting off the pressure of the brake cylinder.
  • the hydraulic brake control unit with an empty-to-weight conversion function further includes a pressure switch, which detects that the pressure of a single brake cylinder does not exceed a set value after detecting a failure of the second sensor.
  • first solenoid valve and the second solenoid valve are two-position two-way solenoid valves
  • the fifth solenoid valve is a double solenoid valve.
  • the third solenoid valve is a two-position three-way solenoid valve.
  • the fourth solenoid valve is a two-position three-way solenoid valve.
  • FIG. 1 is a schematic structural diagram of a hydraulic brake control unit having an empty weight conversion function according to the present invention.
  • a hydraulic brake control unit with an empty weight conversion function specifically includes an accumulator, a first solenoid valve YV1, a second solenoid valve YV2, a third solenoid valve YV3, a fifth solenoid valve YV5,
  • the second sensor SP2 the first pressure regulating valve Y1, the second pressure regulating valve Y2, the accumulator is connected to the first pressure regulating valve Y1 or the second pressure regulating valve Y2, and the first pressure regulating valve Y1 or the second The pressure regulating valve Y2 is connected to a fifth solenoid valve YV5.
  • the first pressure regulating valve Y1 or the second pressure regulating valve Y2 is used to control the rapid braking of the no-load signal or the rapid braking of the heavy load signal.
  • the energy saver is also connected to the first solenoid valve YV1 or the second solenoid valve YV2, the first solenoid valve YV1 or the second solenoid valve YV2 or the fifth solenoid valve YV5 is connected to the third solenoid valve YV3, or the first solenoid valve YV1 or The second solenoid valve YV2 is used to control the common brake mitigation state or the common brake.
  • the first solenoid valve Y1 or the second regulator can be turned on only when the fifth solenoid valve YV5 is connected to the third solenoid valve YV3.
  • Pressure valve Y2 the third solenoid valve YV3 is connected to the brake cylinder, and the second sensor SP2 is used to detect the pressure of the brake cylinder.
  • the fifth solenoid valve YV5 is connected to the first pressure regulating valve Y1 or the second pressure regulating valve Y2, and the first pressure regulating valve Y1 and the second pressure regulating valve Y2 are respectively provided with the safety required for the empty and heavy loads.
  • Brake pressure During safe braking, the hydraulic pressure of the accumulator enters the brake cylinder through the first pressure regulating valve Y1 or the second pressure regulating valve Y2, the fifth solenoid valve YV5, and the third solenoid valve YV3, thereby generating a safe braking effect.
  • the second solenoid valve YV2 is energized, and the hydraulic pressure of the accumulator enters the brake cylinder through the second solenoid valve YV2 and the third solenoid valve YV3 to generate a braking effect.
  • the pressure is detected by the second sensor SP2 and the closing of the second solenoid valve YV2 is controlled to make the brake cylinder reach the required pressure value.
  • the hydraulic brake control unit with an empty weight conversion function further includes a filter L1, an oil pump P, a check valve H1, and a first sensor SP1, and the filter L1, the oil pump P, and the check valve H1 are connected in sequence.
  • the check valve H1 is connected to the accumulator and sends oil to the accumulator.
  • the first pressure sensor SP1 is used to detect the accumulator hydraulic pressure and control the start and stop of the oil pump.
  • the oil pump P starts, the hydraulic oil enters the accumulator through the filter L1, the oil pump P, and the check valve H1.
  • the pressure sensor SP1 detects that the oil pressure reaches the highest set value, the oil pump P stops working.
  • the pressure sensor SP1 detects that the oil pressure is lower than the minimum set value, the oil pump P restarts.
  • the hydraulic brake control unit with an air-to-weight conversion function further includes a third pressure regulating valve Y3, and the third pressure regulating valve Y3 is connected to the check valve H1 and is connected in parallel with the filter L1 and the oil pump P. If the internal pressure of the accumulator exceeds the highest set value, adjust the third pressure valve Y3 to release the pressure to ensure the safety of the system.
  • the hydraulic brake control unit with an empty weight conversion function further includes a button SB1, and the button SB1 manually relieves braking.
  • the button SB1 manually relieves braking.
  • the hydraulic brake control unit with an empty weight conversion function further includes a fourth solenoid valve YV4, and when the fourth solenoid valve YV4 is powered, the brake cylinder is cut off. Ensure that the failure of a single braking unit will not affect the normal operation of the entire train.
  • the hydraulic brake control unit with an empty weight conversion function further includes a pressure switch K1, which is used to provide a warning signal after cutting off the pressure of the brake cylinder.
  • the hydraulic brake control unit with an empty-to-weight conversion function further includes a pressure switch K2, which detects that the second sensor SP2 fails, and the pressure switch K2 ensures that the pressure pressure of a single brake cylinder does not exceed a set value. Ensure safe operation.
  • the first solenoid valve YV1 and the second solenoid valve YV2 are two-position two-way solenoid valves
  • the fifth solenoid valve YV5 is a double solenoid valve.
  • the third solenoid valve YV3 is a two-position three-way solenoid valve.
  • the fourth solenoid valve YV4 is a two-position three-way solenoid valve.

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

Abstract

A hydraulic braking control unit having an empty-load braking function, the unit comprising an accumulator, a first solenoid valve (YV1), a second solenoid valve (YV2), a third solenoid valve (YV3), a fifth solenoid valve (YV5), a second sensor (SP2), a first pressure regulating valve (Y1), and a second pressure regulating valve (Y2). The accumulator is connected to the first pressure regulating valve (Y1) or the second pressure regulating valve (Y2), and the first pressure regulating valve (Y1) or the second pressure regulating valve (Y2) is connected to the fifth solenoid valve (YV5). The first pressure regulating valve (Y1) or the second pressure regulating valve (Y2) activates to achieve fast braking for an empty load signal or fast braking for a load signal. The accumulator is further connected to the first solenoid valve (YV1) or the second solenoid valve (YV2). The first solenoid valve (YV1), the second solenoid valve (YV2), or the fifth solenoid valve (YV5) is connected to the third solenoid valve (YV3). The first solenoid valve (YV1) or the second solenoid valve (YV2) activates to achieve a common braking release state or common braking. The third solenoid valve (YV3) is connected to a braking cylinder. The second sensor (SP2) detects the pressure of the braking cylinder. The control unit reduces costs, improves safety, and better adapts to the requirements of cargo trains.

Description

一种具有空重转换功能的液压制动控制单元Hydraulic brake control unit with empty weight conversion function 技术领域Technical field
本发明涉及液压制动***，具体为一种具有空重转换功能的液压制动控制单元。The invention relates to a hydraulic brake system, and in particular to a hydraulic brake control unit with an empty weight conversion function.
背景技术Background technique
目前城轨列车用液压制动***具有常用制动、快速制动、安全制动等功能，常用制动和快速制动通过专用的载荷检测***检测列车载荷信息，制动***根据载荷计算需要的制动力，保证列车的制动功能。安全制动只有一个固定的设定值，无法根据载荷进行调整，无论载荷是多少，均实施相同的制动力，存在空载时制动力偏大的问题，但由于城轨列车空、重载荷比变化较小，对制动安全无影响。At present, the hydraulic braking system for urban rail trains has functions such as common braking, rapid braking, and safe braking. Common braking and rapid braking detect train load information through a dedicated load detection system. The braking system calculates the required load according to the load. Braking force to ensure the braking function of the train. The safety brake has only a fixed set value and cannot be adjusted according to the load. The same braking force is applied regardless of the load. There is a problem that the braking force is large at no load. However, due to the empty and heavy load ratio of urban rail trains The changes are small and have no effect on braking safety.
货运列车空、重载荷变化非常大，如果安全制动时制动力按重载时进行设定，则空载时制动力就超过制动粘着，列车产生滑行，影响行车安全；如果安全制动力安装空载时进行设定，在重载时制动力过小，将不能再安全距离内停车，影响行车安全。Freight trains have very large changes in empty and heavy loads. If the braking force is set at heavy load during safe braking, the braking force will exceed the brake sticking at no load, and the train will coast and affect the driving safety. If the safe braking force is installed, Set at no load, the braking force is too small during heavy load, and it will no longer be able to stop within a safe distance, affecting driving safety.
现有城轨液压制动***，当单个液压单元出现故障后，制动力会超过最大允许值，导致列车急速停车并易导致设备损坏。In the existing urban rail hydraulic braking system, when a single hydraulic unit fails, the braking force will exceed the maximum allowable value, causing the train to stop quickly and easily causing equipment damage.
现有液压制动***不适应货运列车的运用要求。The existing hydraulic braking system does not meet the requirements for the operation of freight trains.
发明内容Summary of the Invention
本发明所要解决的技术问题是：针对上述存在的问题，提供了一种具有空重转换功能的液压制动控制单元。The technical problem to be solved by the present invention is to provide a hydraulic brake control unit with an empty weight conversion function in response to the problems mentioned above.
本发明采用的技术方案如下：一种具有空重转换功能的液压制动控制单元， 具体包括蓄能器、第一电磁阀、第二电磁阀、第三电磁阀、第五电磁阀、第二传感器、第一调压阀、第二调压阀，所述蓄能器连接第一调压阀或第二调压阀，所述第一调压阀或第二调压阀连接第五电磁阀，所述第一调压阀或第二调压阀用于控制接通空载荷信号的快速制动或者重载荷信号的快速制动，所述蓄能器还连接第一电磁阀或第二电磁阀，所述第一电磁阀或第二电磁阀或第五电磁阀连接第三电磁阀，所述第一电磁阀或第二电磁阀用于控制接通常用制动缓解状态或者常用制动，所述第三电磁阀连接制动缸，所述第二传感器用于检测制动缸的压力。The technical solution adopted by the present invention is as follows: a hydraulic brake control unit with an empty weight conversion function, which specifically includes an accumulator, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fifth solenoid valve, and a second A sensor, a first pressure regulating valve, a second pressure regulating valve, the accumulator is connected to a first pressure regulating valve or a second pressure regulating valve, and the first pressure regulating valve or a second pressure regulating valve is connected to a fifth solenoid valve The first pressure regulating valve or the second pressure regulating valve is used to control the rapid braking of the no-load signal or the rapid braking of the heavy load signal, and the accumulator is also connected to the first solenoid valve or the second solenoid valve. The first solenoid valve or the second solenoid valve or the fifth solenoid valve is connected to a third solenoid valve, and the first solenoid valve or the second solenoid valve is used to control a common brake mitigation state or a common brake, The third solenoid valve is connected to a brake cylinder, and the second sensor is used to detect the pressure of the brake cylinder.
进一步的，所述具有空重转换功能的液压制动控制单元还包括过滤器、油泵、止回阀、第一传感器，所述过滤器、油泵、止回阀依次连接，所述止回阀连接到蓄能器，向蓄能器输送油，所述压力第一传感器用于检测蓄能器液压并控制油泵启停。Further, the hydraulic brake control unit with an empty weight conversion function further includes a filter, an oil pump, a check valve, and a first sensor, the filter, the oil pump, and the check valve are connected in sequence, and the check valve is connected The oil is delivered to the accumulator, and the pressure first sensor is used to detect the accumulator hydraulic pressure and control the start and stop of the oil pump.
进一步的，所述具有空重转换功能的液压制动控制单元还包括第三调压阀，所述第三调压阀连接止回阀，并与过滤器、油泵并联。Further, the hydraulic brake control unit with an empty weight conversion function further includes a third pressure regulating valve, the third pressure regulating valve is connected to a check valve, and is connected in parallel with a filter and an oil pump.
进一步的，所述具有空重转换功能的液压制动控制单元还包括按钮，所述按钮手动缓解制动。Further, the hydraulic brake control unit with an empty weight conversion function further includes a button, and the button manually relieves braking.
进一步的，所述具有空重转换功能的液压制动控制单元还包括第四电磁阀，所述第四电磁阀得电时，切除制动缸。Further, the hydraulic brake control unit with an empty weight conversion function further includes a fourth solenoid valve, and when the fourth solenoid valve is powered, the brake cylinder is cut off.
进一步的，所述具有空重转换功能的液压制动控制单元还包括压力开关，用于切除制动缸压力后提供警告信号。Further, the hydraulic brake control unit with an empty weight conversion function further includes a pressure switch, which is used to provide a warning signal after cutting off the pressure of the brake cylinder.
进一步的，所述具有空重转换功能的液压制动控制单元还包括压力开关，检测到第二传感器出现故障后，所述压力开关保证单个制动缸压力压力不超设定值。Further, the hydraulic brake control unit with an empty-to-weight conversion function further includes a pressure switch, which detects that the pressure of a single brake cylinder does not exceed a set value after detecting a failure of the second sensor.
进一步的，所述第一电磁阀和第二电磁阀是两位两通电磁阀，所述第五电磁阀是双电磁阀。Further, the first solenoid valve and the second solenoid valve are two-position two-way solenoid valves, and the fifth solenoid valve is a double solenoid valve.
进一步的，所述第三电磁阀是两位三通电磁阀。Further, the third solenoid valve is a two-position three-way solenoid valve.
进一步的，所述第四电磁阀是两位三通电磁阀。Further, the fourth solenoid valve is a two-position three-way solenoid valve.
与现有技术相比，采用上述技术方案的有益效果为：Compared with the prior art, the beneficial effects of using the above technical solution are:
1、节约成本，取消传统列车液压制动***采用的载荷检测***，仅外界直接输入空、重载荷即可。1. Save costs. Cancel the load detection system used in the traditional train hydraulic brake system. Only external and direct loads can be input.
2、解决了安全制动无载荷调整的问题。2. Solved the problem of no-load adjustment of safety brake.
3、增加故障后的安全保护功能，适应货运列车运用的需要。3. Add safety protection function after failure to meet the needs of freight train operation.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1是本发明具有空重转换功能的液压制动控制单元的结构示意图。FIG. 1 is a schematic structural diagram of a hydraulic brake control unit having an empty weight conversion function according to the present invention.
具体实施方式detailed description
下面结合附图对本发明做进一步描述。The invention is further described below with reference to the drawings.
如图1所示，一种具有空重转换功能的液压制动控制单元，具体包括蓄能器、第一电磁阀YV1、第二电磁阀YV2、第三电磁阀YV3、第五电磁阀YV5、第二传感器SP2、第一调压阀Y1、第二调压阀Y2，所述蓄能器连接第一调压阀Y1或第二调压阀Y2，所述第一调压阀Y1或第二调压阀Y2连接第五电磁阀YV5，所述第一调压阀Y1或第二调压阀Y2用于控制接通空载荷信号的快速制动或者重载荷信号的快速制动，所述蓄能器还连接第一电磁阀YV1或第二电磁阀YV2，所述第一电磁阀YV1或第二电磁阀YV2或第五电磁阀YV5连接第三电磁阀YV3，所述第一电磁阀YV1或第二电磁阀YV2用于控制接通常用制动缓解状态或者常用制动，所述第五电磁阀YV5与第三电磁阀YV3连接时，才可以接通第一调压 阀Y1或第二调压阀Y2，所述第三电磁阀YV3连接制动缸，所述第二传感器SP2用于检测制动缸的压力。As shown in FIG. 1, a hydraulic brake control unit with an empty weight conversion function specifically includes an accumulator, a first solenoid valve YV1, a second solenoid valve YV2, a third solenoid valve YV3, a fifth solenoid valve YV5, The second sensor SP2, the first pressure regulating valve Y1, the second pressure regulating valve Y2, the accumulator is connected to the first pressure regulating valve Y1 or the second pressure regulating valve Y2, and the first pressure regulating valve Y1 or the second The pressure regulating valve Y2 is connected to a fifth solenoid valve YV5. The first pressure regulating valve Y1 or the second pressure regulating valve Y2 is used to control the rapid braking of the no-load signal or the rapid braking of the heavy load signal. The energy saver is also connected to the first solenoid valve YV1 or the second solenoid valve YV2, the first solenoid valve YV1 or the second solenoid valve YV2 or the fifth solenoid valve YV5 is connected to the third solenoid valve YV3, or the first solenoid valve YV1 or The second solenoid valve YV2 is used to control the common brake mitigation state or the common brake. The first solenoid valve Y1 or the second regulator can be turned on only when the fifth solenoid valve YV5 is connected to the third solenoid valve YV3. Pressure valve Y2, the third solenoid valve YV3 is connected to the brake cylinder, and the second sensor SP2 is used to detect the pressure of the brake cylinder.
(1)快速制动控制过程，仅根据空、重载荷信号输出更高的制动力。根据空、重载荷信号，第五电磁阀YV5接通第一调压阀Y1或者第二调压阀Y2，第一调压阀Y1和第二调压阀Y2分别设置空、重载荷需要的安全制动压力。安全制动时，蓄能器的液压力通过第一调压阀Y1或第二调压阀Y2、第五电磁阀YV5、第三电磁阀YV3进入制动缸，产生安全制动作用。(1) In the process of rapid braking control, a higher braking force is output only based on the no-load and heavy-load signals. According to the empty and heavy load signals, the fifth solenoid valve YV5 is connected to the first pressure regulating valve Y1 or the second pressure regulating valve Y2, and the first pressure regulating valve Y1 and the second pressure regulating valve Y2 are respectively provided with the safety required for the empty and heavy loads. Brake pressure. During safe braking, the hydraulic pressure of the accumulator enters the brake cylinder through the first pressure regulating valve Y1 or the second pressure regulating valve Y2, the fifth solenoid valve YV5, and the third solenoid valve YV3, thereby generating a safe braking effect.
(2)常用制动时，第二电磁阀YV2得电，蓄能器的液压力通过第二电磁阀YV2、第三电磁阀YV3进入制动缸，产生制动作用。根据空、重载荷信号，由第二传感器SP2检测压力并控制第二电磁阀YV2的关闭，使制动缸达到需要的压力值。通过对第二电磁阀YV2的得电、失电控制，实现阶段制动。(2) During common braking, the second solenoid valve YV2 is energized, and the hydraulic pressure of the accumulator enters the brake cylinder through the second solenoid valve YV2 and the third solenoid valve YV3 to generate a braking effect. According to the empty and heavy load signals, the pressure is detected by the second sensor SP2 and the closing of the second solenoid valve YV2 is controlled to make the brake cylinder reach the required pressure value. By controlling the power on and power off of the second solenoid valve YV2, phase braking is realized.
(3)常用制动缓解时，第一电磁阀YV1得电，制动缸压力通过电磁阀YV4、YV3、YV1排入油缸，由第二传感器SP2检测压力并控制第一电磁阀YV1的关闭，常用制动缓解。通过第一电磁阀YV1的得电、失电控制，实现阶段缓解。(3) When the common brake is relieved, the first solenoid valve YV1 is energized, and the brake cylinder pressure is discharged into the cylinder through the solenoid valves YV4, YV3, and YV1. The second sensor SP2 detects the pressure and controls the closing of the first solenoid valve YV1. Common brake relief. Through the power-on and power-off control of the first solenoid valve YV1, phase mitigation is achieved.
优选地，所述具有空重转换功能的液压制动控制单元还包括过滤器L1、油泵P、止回阀H1、第一传感器SP1，所述过滤器L1、油泵P、止回阀H1依次连接，所述止回阀H1连接到蓄能器，向蓄能器输送油，所述压力第一传感器SP1用于检测蓄能器液压并控制油泵启停。油泵P启动，液压油通过过滤器L1油泵P、止回阀H1进入蓄能器，当压力传感器SP1检测到油压达到最高设定值，油泵P停止工作。当压力传感器SP1检测到油压低于最低设定值，油泵P重新启动。Preferably, the hydraulic brake control unit with an empty weight conversion function further includes a filter L1, an oil pump P, a check valve H1, and a first sensor SP1, and the filter L1, the oil pump P, and the check valve H1 are connected in sequence. The check valve H1 is connected to the accumulator and sends oil to the accumulator. The first pressure sensor SP1 is used to detect the accumulator hydraulic pressure and control the start and stop of the oil pump. The oil pump P starts, the hydraulic oil enters the accumulator through the filter L1, the oil pump P, and the check valve H1. When the pressure sensor SP1 detects that the oil pressure reaches the highest set value, the oil pump P stops working. When the pressure sensor SP1 detects that the oil pressure is lower than the minimum set value, the oil pump P restarts.
优选地，所述具有空重转换功能的液压制动控制单元还包括第三调压阀Y3，所述第三调压阀Y3连接止回阀H1，并与过滤器L1、油泵P并联。若蓄能器内 部压力超过最高设定值，调第三压阀Y3泄压，保证***安全。Preferably, the hydraulic brake control unit with an air-to-weight conversion function further includes a third pressure regulating valve Y3, and the third pressure regulating valve Y3 is connected to the check valve H1 and is connected in parallel with the filter L1 and the oil pump P. If the internal pressure of the accumulator exceeds the highest set value, adjust the third pressure valve Y3 to release the pressure to ensure the safety of the system.
优选地，所述具有空重转换功能的液压制动控制单元还包括按钮SB1，所述按钮SB1手动缓解制动。当需要检修液压控制单元，或者需要手动缓解列车制动时，按下按钮SB1，***泄压。Preferably, the hydraulic brake control unit with an empty weight conversion function further includes a button SB1, and the button SB1 manually relieves braking. When the hydraulic control unit needs to be overhauled or the brakes of the train need to be relieved manually, press the button SB1 to release the pressure in the system.
优选地，所述具有空重转换功能的液压制动控制单元还包括第四电磁阀YV4，所述第四电磁阀YV4得电时，切除制动缸。保证单个制动单元故障后不影响整列车的正常运行。Preferably, the hydraulic brake control unit with an empty weight conversion function further includes a fourth solenoid valve YV4, and when the fourth solenoid valve YV4 is powered, the brake cylinder is cut off. Ensure that the failure of a single braking unit will not affect the normal operation of the entire train.
优选地，所述具有空重转换功能的液压制动控制单元还包括压力开关K1，用于切除制动缸压力后提供警告信号。Preferably, the hydraulic brake control unit with an empty weight conversion function further includes a pressure switch K1, which is used to provide a warning signal after cutting off the pressure of the brake cylinder.
优选地，所述具有空重转换功能的液压制动控制单元还包括压力开关K2，检测到第二传感器SP2出现故障后，所述压力开关K2保证单个制动缸压力压力不超设定值。保证运行安全。Preferably, the hydraulic brake control unit with an empty-to-weight conversion function further includes a pressure switch K2, which detects that the second sensor SP2 fails, and the pressure switch K2 ensures that the pressure pressure of a single brake cylinder does not exceed a set value. Ensure safe operation.
优选地，所述第一电磁阀YV1和第二电磁阀YV2是两位两通电磁阀，所述第五电磁阀YV5是双电磁阀。Preferably, the first solenoid valve YV1 and the second solenoid valve YV2 are two-position two-way solenoid valves, and the fifth solenoid valve YV5 is a double solenoid valve.
优选地，所述第三电磁阀YV3是两位三通电磁阀。Preferably, the third solenoid valve YV3 is a two-position three-way solenoid valve.
优选地，所述第四电磁阀YV4是两位三通电磁阀。Preferably, the fourth solenoid valve YV4 is a two-position three-way solenoid valve.
本发明并不局限于前述的具体实施方式。本发明扩展到任何在本说明书中披露的新特征或任何新的组合，以及披露的任一新的方法或过程的步骤或任何新的组合。如果本领域技术人员，在不脱离本发明的精神所做的非实质性改变或改进，都应该属于本发明权利要求保护的范围。The invention is not limited to the foregoing specific embodiments. The invention extends to any new feature or any new combination disclosed in this specification, and to any new method or process step or any new combination disclosed. If those skilled in the art make insubstantial changes or improvements without departing from the spirit of the present invention, they should all belong to the scope of protection of the claims of the present invention.

Claims (10)

  1. 一种具有空重转换功能的液压制动控制单元，其特征在于，具体包括蓄能器、第一电磁阀(YV1)、第二电磁阀(YV2)、第三电磁阀(YV3)、第五电磁阀(YV5)、第二传感器(SP2)、第一调压阀(Y1)、第二调压阀(Y2)，所述蓄能器连接第一调压阀(Y1)或第二调压阀(Y2)，所述第一调压阀(Y1)或第二调压阀(Y2)连接第五电磁阀(YV5)，所述第一调压阀(Y1)或第二调压阀(Y2)用于控制接通空载荷信号的快速制动或者重载荷信号的快速制动，所述蓄能器还连接第一电磁阀(YV1)或第二电磁阀(YV2)，所述第一电磁阀(YV1)或第二电磁阀(YV2)或第五电磁阀(YV5)连接第三电磁阀(YV3)，所述第一电磁阀(YV1)或第二电磁阀(YV2)用于控制接通常用制动缓解状态或者常用制动，所述第三电磁阀(YV3)连接制动缸，所述第二传感器(SP2)用于检测制动缸的压力。A hydraulic brake control unit with an empty weight conversion function, which is characterized in that it specifically includes an accumulator, a first solenoid valve (YV1), a second solenoid valve (YV2), a third solenoid valve (YV3), and a fifth Solenoid valve (YV5), second sensor (SP2), first pressure regulating valve (Y1), second pressure regulating valve (Y2), the accumulator is connected to the first pressure regulating valve (Y1) or the second pressure regulating valve Valve (Y2), the first pressure regulating valve (Y1) or the second pressure regulating valve (Y2) is connected to a fifth solenoid valve (YV5), the first pressure regulating valve (Y1) or the second pressure regulating valve ( Y2) is used to control the fast braking of turning on the no-load signal or the fast braking of the heavy load signal, and the accumulator is further connected to a first solenoid valve (YV1) or a second solenoid valve (YV2), the first The solenoid valve (YV1) or the second solenoid valve (YV2) or the fifth solenoid valve (YV5) is connected to the third solenoid valve (YV3), and the first solenoid valve (YV1) or the second solenoid valve (YV2) is used for controlling The common brake mitigation state or the common brake is turned on, the third solenoid valve (YV3) is connected to a brake cylinder, and the second sensor (SP2) is used to detect the pressure of the brake cylinder.
  2. 如权利要求1所述的具有空重转换功能的液压制动控制单元，其特征在于，所述具有空重转换功能的液压制动控制单元还包括过滤器(L1)、油泵(P)、止回阀(H1)、第一传感器(SP1)，所述过滤器(L1)、油泵(P)、止回阀(H1)依次连接，所述止回阀(H1)连接到蓄能器，向蓄能器输送油，所述压力第一传感器(SP1)用于检测蓄能器液压并控制油泵启停。The hydraulic brake control unit with an empty weight conversion function according to claim 1, wherein the hydraulic brake control unit with an empty weight conversion function further comprises a filter (L1), an oil pump (P), a brake The check valve (H1), the first sensor (SP1), the filter (L1), the oil pump (P), and the check valve (H1) are connected in sequence. The check valve (H1) is connected to the accumulator, and The accumulator delivers oil, and the first pressure sensor (SP1) is used to detect the accumulator hydraulic pressure and control the start and stop of the oil pump.
  3. 如权利要求2所述的具有空重转换功能的液压制动控制单元，其特征在于，所述具有空重转换功能的液压制动控制单元还包括第三调压阀(Y3)，所述第三调压阀(Y3)连接止回阀(H1)，并与过滤器(L1)、油泵(P)并联。The hydraulic brake control unit with an empty weight conversion function according to claim 2, wherein the hydraulic brake control unit with an empty weight conversion function further comprises a third pressure regulating valve (Y3), and the first The three pressure regulating valve (Y3) is connected to the check valve (H1) and is connected in parallel with the filter (L1) and the oil pump (P).
  4. 如权利要求3所述的具有空重转换功能的液压制动控制单元，其特征在于，所述具有空重转换功能的液压制动控制单元还包括按钮(SB1)，所述按钮(SB1)手动缓解制动。The hydraulic brake control unit with an empty weight conversion function according to claim 3, wherein the hydraulic brake control unit with an empty weight conversion function further comprises a button (SB1), and the button (SB1) is manually operated Relieve braking.
  5. 如权利要求1或者4所述的具有空重转换功能的液压制动控制单元，其特征在于，所述具有空重转换功能的液压制动控制单元还包括第四电磁阀 (YV4)，所述第四电磁阀(YV4)得电时，切除制动缸。The hydraulic brake control unit with an empty weight conversion function according to claim 1 or 4, wherein the hydraulic brake control unit with an empty weight conversion function further comprises a fourth solenoid valve (YV4), and When the fourth solenoid valve (YV4) is energized, the brake cylinder is cut off.
  6. 如权利要求5所述的具有空重转换功能的液压制动控制单元，其特征在于，所述具有空重转换功能的液压制动控制单元还包括压力开关(K1)，用于切除制动缸压力后提供警告信号。The hydraulic brake control unit with an empty weight conversion function according to claim 5, wherein the hydraulic brake control unit with an empty weight conversion function further comprises a pressure switch (K1) for cutting off the brake cylinder Provides warning signal after pressure.
  7. 如权利要求6所述的具有空重转换功能的液压制动控制单元，其特征在于，所述具有空重转换功能的液压制动控制单元还包括压力开关(K2)，检测到第二传感器(SP2)出现故障后，所述压力开关(K2)保证单个制动缸压力压力不超设定值。The hydraulic brake control unit with an empty weight conversion function according to claim 6, wherein the hydraulic brake control unit with an empty weight conversion function further comprises a pressure switch (K2) and detects a second sensor ( SP2) After a failure occurs, the pressure switch (K2) ensures that the pressure pressure of a single brake cylinder does not exceed a set value.
  8. 如权利要求1所述的具有空重转换功能的液压制动控制单元，其特征在于，所述第一电磁阀(YV1)和第二电磁阀(YV2)是两位两通电磁阀，所述第五电磁阀(YV5)是双电磁阀。The hydraulic brake control unit with an empty weight conversion function according to claim 1, wherein the first solenoid valve (YV1) and the second solenoid valve (YV2) are two-position two-way solenoid valves, and The fifth solenoid valve (YV5) is a double solenoid valve.
  9. 如权利要求1所述的具有空重转换功能的液压制动控制单元，其特征在于，所述第三电磁阀(YV3)是两位三通电磁阀。The hydraulic brake control unit with an empty weight conversion function according to claim 1, wherein the third solenoid valve (YV3) is a two-position three-way solenoid valve.
  10. 如权利要求5所述的具有空重转换功能的液压制动控制单元，其特征在于，所述第四电磁阀(YV4)是两位三通电磁阀。The hydraulic brake control unit with an empty weight conversion function according to claim 5, wherein the fourth solenoid valve (YV4) is a two-position three-way solenoid valve.
PCT/CN2018/112997 2018-09-29 2018-10-31 Hydraulic braking control unit having empty-load braking function WO2020062404A1 (en)

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