CN109353369B - Rail vehicle rescue braking system and control method - Google Patents
Rail vehicle rescue braking system and control method Download PDFInfo
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- CN109353369B CN109353369B CN201811155208.5A CN201811155208A CN109353369B CN 109353369 B CN109353369 B CN 109353369B CN 201811155208 A CN201811155208 A CN 201811155208A CN 109353369 B CN109353369 B CN 109353369B
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- rescue
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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
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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
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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
A rail vehicle rescue braking system and a control method are characterized in that: the pneumatic rescue control unit comprises a pressure reducing valve, an electromagnetic valve, a test interface and two piston valves, wherein the main air cylinder is connected with an inlet of the pressure reducing valve, the pressure reducing valve is connected with the electromagnetic valve and the piston valves and is connected with a two-way valve arranged between an emergency electromagnetic valve and a weighing pressure limiting valve in the pneumatic brake control unit to perform common brake control, one end of a first piston valve is connected with the main air cylinder, the other end of the first piston valve is connected with the emergency brake electromagnetic valve in the pneumatic brake control unit, the two piston valves are connected with a train pipe penetrating through a train, the train pipe is connected with a train pipe of a rescue locomotive, and the piston valves are controlled by the pressure of the train pipe. When the fault car group is rescued, the power supply of all the electromagnetic valves is cut off, and the pure pneumatic control of the brake system of the fault car group can be realized only through a train pipe connected with the locomotive. The invention improves the train speed in the rescue process, saves the rescue time and reduces the influence on the normal operation order. The problem that rescue in a long distance cannot be guaranteed due to the limitation of the capacity of the storage battery when the fault car set is in electrical fault is avoided. The safety of the train is ensured.
Description
Technical Field
The invention belongs to the field of railway transportation, and particularly relates to a braking system for rail vehicle rescue and a control method.
Background
Fixed-consist rail vehicles, such as: when the urban rail vehicle and the motor train unit are in failure and can not run, the rescue locomotive is generally connected with the failure motor train unit and then is pulled to rescue and return to the garage. At present, brake systems of urban rail vehicles and motor train units adopt straight-through type electro-pneumatic brake systems, and rescue locomotives adopt automatic type air brake systems. The two brake systems cannot be directly matched.
At present, two situations exist during rescue, one situation is that a locomotive and a fault train set brake system are not connected, and the fault train set cuts off the brake function, and in the situation, the train can only be slowly rescued back to a warehouse at a very low speed due to low braking force of the whole train. The other condition is that a conversion device is arranged on a fault train set to convert an air braking instruction of the locomotive into an electric braking instruction of the fault train set, the conversion device and an electric pneumatic braking system of the fault train set need to keep power supply, and if the fault train set cannot supply power, the fault train set cannot be maintained for a long distance only by depending on power supply of a storage battery, and the fault train set is not suitable for long-distance rescue.
Disclosure of Invention
The invention aims to provide a brake system and a control method for rail vehicle rescue, so that a rail vehicle can be connected with a locomotive air brake system, the operation is simple, the normal work of the brake system is not influenced, no power supply is needed during rescue, and the rescue of a rescue locomotive on a fault locomotive group at a long distance and at a high speed is realized.
In order to solve the technical problem, the invention provides a railway vehicle rescue brake system, which comprises an existing pneumatic brake control unit of the railway vehicle brake system, wherein the pneumatic brake control unit comprises a two-way valve, an emergency brake solenoid valve, a weighing pressure limiting valve, a relay valve and a pressure regulator, and an outlet of the relay valve is connected with a brake cylinder pipeline, and the railway vehicle rescue brake system is characterized in that: the pneumatic rescue control unit comprises a pressure reducing valve, an electromagnetic valve, a test interface and two piston valves, wherein a brake air cylinder of the railway vehicle is connected with an inlet of the pressure reducing valve of the pneumatic rescue control unit, an outlet of the pressure reducing valve is sequentially connected to the electromagnetic valve and a second piston valve and is connected with a two-way valve additionally arranged between an emergency brake electromagnetic valve and a weighing pressure limiting valve in the pneumatic brake control unit, one end of a first piston valve is connected with the brake air cylinder, and the other end of the first piston valve is connected with the emergency brake electromagnetic valve and a pressure regulator in the pneumatic brake control unit; the first piston valve and the second piston valve are both connected with the train pipe and are controlled by the pressure of the train pipe. The train pipe runs through the whole train of the rail vehicle and is connected with a pneumatic rescue control unit added to each vehicle of the rail vehicle,
the electromagnetic valve in the pneumatic rescue control unit is connected with an electric safety loop for emergency braking of the train, redundant braking pressure can be provided when emergency braking is applied during normal running of the train, and braking safety of the train is further guaranteed.
A control method of a rail vehicle rescue brake system is characterized by comprising the following steps:
when the fault car group is rescued by the locomotive, the emergency braking electrical safety loop of the fault car group is disconnected for power supply, and a train pipe of the fault car group is connected with a train pipe of the rescue locomotive;
when the rescue locomotive relieves braking, the train pipe is full of pressure, and the fault train unit controls and discharges a control gas circuit connected with the pneumatic brake control unit through the pneumatic rescue control unit, so that a brake system of the fault train unit is in a relief state;
when the rescue locomotive applies the common brake, the train pipe is discharged to the decompression amount range of the common brake, and the fault train unit controls the set pressure to enter the pneumatic brake control unit through the pneumatic rescue control unit, so that the fault train unit applies the set brake pressure;
when the emergency brake is applied to the rescue locomotive, the train pipe is emptied, and the pressure of the brake air cylinder of the fault train set is controlled by the pneumatic rescue control unit to directly enter the pneumatic brake control unit, so that the emergency brake pressure is applied to the fault train set.
The positive effects produced by the scheme adopted by the invention are as follows:
(1) through the pneumatic rescue control unit and the train pipe, the rescue locomotive can control a brake system of a fault train during rescue, and the rescue locomotive and the fault train set both have brake capacity, so that the train speed in the rescue process can be obviously improved, the rescue time is saved, and the influence on the normal operation order is reduced.
(2) When the rescue locomotive rescues the failed train, the brake system of the failed train set is not required to be in a power supply state, the brake function of the failed train set can be realized only through pneumatic control of the rescue locomotive, electroless rescue is realized, the safety of the train is ensured, and the situation that long-distance rescue cannot be ensured due to the limitation of the capacity of the storage battery when the failed train set is in electrical failure can be avoided.
(3) The pneumatic rescue control unit has two levels of service braking and emergency braking, and can apply corresponding braking levels according to conditions, so that the safety of the train is ensured.
(4) The pneumatic rescue control unit is in an automatic non-working state when the train normally runs, and the normal work of the pneumatic brake control unit is not influenced.
Drawings
FIG. 1 is a schematic diagram of the structure of an embodiment of the present invention.
Detailed Description
Referring to fig. 1, the specific embodiment of the invention comprises a pneumatic rescue control unit and an existing pneumatic brake control unit of a brake system of a fault car group, wherein the pneumatic rescue control unit comprises a piston valve 01, a piston valve 02, an electromagnetic valve 03, a test interface 04 and a pressure reducing valve 05; the inlets of the piston valve 01 and the pressure reducing valve 05 are connected with a brake air cylinder of a brake system of a fault car group, and the outlet of the piston valve 01 is connected with an emergency brake electromagnetic valve 07 and a pressure regulator 10 in a pneumatic brake control unit; the outlet of the piston valve 02 is connected with the two-way valve 06 through the port B of the pneumatic brake control unit; the control interfaces of the piston valve 01 and the piston valve 02 are connected with a train pipe 11 through an L port, the setting value of the piston valve 01 meets the action of the emergency braking pressure reduction amount of the train pipe to conduct the gas circuit, and the setting value of the piston valve 02 meets the action of the common braking pressure reduction amount range of the train pipe to conduct the gas circuit; the electromagnetic valve 03 is connected with an emergency braking electrical safety loop of the fault car group, and an air circuit in a power-off state is in a conducting state. The pneumatic brake control unit comprises a two-way valve 06, an emergency brake solenoid valve 07, a weighing pressure limiting valve 08, a relay valve 09 and a pressure regulator 10, wherein the outlet C of the relay valve is connected with a brake cylinder pipeline, and the inlet T of the weighing pressure limiting valve 08 is connected with an air spring pipeline.
When the fault car group is rescued by the rescue locomotive, the fault car group is in a rescued mode, a train pipe of the rescue locomotive is connected with a train pipe 11 of the fault car group, an emergency braking electric safety loop of the fault car group is disconnected, so that an electromagnetic valve 03 and an emergency braking electromagnetic valve 07 which are connected with the safety loop are in a power-off state, and a gas circuit is in a conducting state. When the rescue locomotive relieves braking, the train pipe is full of pressure, the piston valve 01 and the piston valve 02 are in a cut-off exhaust state, and air paths connected with the pneumatic braking control unit are all discharged, so that a braking system of a fault train set is in a relieving state.
When the rescue locomotive applies the common brake, the train pipe is discharged to the pressure reduction range of the common brake, the piston 02 action gas circuit is in a conduction state, and compressed air enters the left side of the two-way valve 06 of the pneumatic brake control unit after being reduced to a set value through the pressure reducing valve 05, so that a fault train set applies a fixed brake pressure; the piston valve 01 is still in a cut-off exhaust state, and emergency braking is isolated.
When emergency braking is applied to the rescue locomotive, a train pipe is emptied, the piston valve 01 and the piston valve 02 act to be in a conduction state, compressed air enters from a port B and a port A of the pneumatic braking control unit at the same time, and the emergency braking pressure with larger pressure on two sides of the two-way valve 06 passes through the weighing pressure limiting valve 08 to enable a fault train set to apply emergency braking.
When a train set is in normal operation, compressed air of a train pipe is exhausted, the piston valves 01 and 02 act to be in a conducting state, but under the working condition of non-emergency braking, because an emergency braking electric safety loop is in a closed state, the electromagnetic valve 03 is electrified to be in a cut-off exhaust state, so that a port B of the pneumatic braking control unit is in an exhaust state, and under the working conditions of normal operation traction and service braking, the pneumatic braking control unit is not influenced by the pneumatic rescue control unit. Under the working condition of emergency braking, the emergency braking electromagnetic valve 07 of the pneumatic braking control unit is in a conduction state after power failure, so that emergency braking is applied to a faulty train set, the electromagnetic valve 03 is also in a power failure conduction state, fixed pressure is charged into the left side of the two-way valve, redundant braking application is kept, the condition that braking force loss is caused because the emergency braking cannot be applied due to the fault of the emergency braking electromagnetic valve of the faulty train set can be made up, and safety of a train is guaranteed.
Claims (3)
1. The utility model provides a rail vehicle rescue braking system, includes the existing pneumatic brake control unit of rail vehicle braking system, and pneumatic brake control unit includes two-way valve, emergency braking solenoid valve, the pressure limiting valve of weighing, relay valve, pressure regulator, and the relay valve export is connected with the checking cylinder pipe, its characterized in that: the pneumatic rescue control unit comprises a pressure reducing valve, an electromagnetic valve, a test interface and two piston valves, wherein a brake air cylinder of the railway vehicle is connected with an inlet of the pressure reducing valve of the pneumatic rescue control unit, an outlet of the pressure reducing valve is sequentially connected to the electromagnetic valve and a second piston valve and is connected with a two-way valve additionally arranged between an emergency brake electromagnetic valve and a weighing pressure limiting valve in the pneumatic brake control unit, one end of a first piston valve is connected with the brake air cylinder, and the other end of the first piston valve is connected with the emergency brake electromagnetic valve and a pressure regulator in the pneumatic brake control unit; the first piston valve and the second piston valve are connected with a train pipe and controlled by the pressure of the train pipe, and the train pipe penetrates through the whole train of the rail vehicle and is connected with a pneumatic rescue control unit additionally arranged on each train of the rail vehicle.
2. A railway vehicle rescue brake system as claimed in claim 1, wherein: and an electromagnetic valve in the pneumatic rescue control unit is connected with an electric safety loop for emergency braking of the train.
3. The control method of the railway vehicle rescue brake system according to claim 1, characterized in that:
when the fault car group is rescued by the locomotive, the emergency braking electrical safety loop of the fault car group is disconnected for power supply, and a train pipe of the fault car group is connected with a train pipe of the rescue locomotive;
when the rescue locomotive relieves braking, the train pipe is full of pressure, and the fault train unit controls and discharges a control gas circuit connected with the pneumatic brake control unit through the pneumatic rescue control unit, so that a brake system of the fault train unit is in a relief state;
when the rescue locomotive applies the common brake, the train pipe is discharged to the decompression amount range of the common brake, and the fault train unit controls the set pressure to enter the pneumatic brake control unit through the pneumatic rescue control unit, so that the fault train unit applies the set brake pressure;
when the emergency brake is applied to the rescue locomotive, the train pipe is emptied, and the pressure of the brake air cylinder of the fault train set is controlled by the pneumatic rescue control unit to directly enter the pneumatic brake control unit, so that the emergency brake pressure is applied to the fault train set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811155208.5A CN109353369B (en) | 2018-09-30 | 2018-09-30 | Rail vehicle rescue braking system and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811155208.5A CN109353369B (en) | 2018-09-30 | 2018-09-30 | Rail vehicle rescue braking system and control method |
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| CN109353369A CN109353369A (en) | 2019-02-19 |
| CN109353369B true CN109353369B (en) | 2020-03-10 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109353369B (en) * | 2018-09-30 | 2020-03-10 | 中车长春轨道客车股份有限公司 | Rail vehicle rescue braking system and control method |
| CN111409665B (en) * | 2020-04-02 | 2021-06-22 | 南京中车浦镇海泰制动设备有限公司 | Train air brake control system and method thereof |
| CN113401162B (en) * | 2021-07-08 | 2023-03-28 | 中车资阳机车有限公司 | Braking system for train rescue |
| CN114291060B (en) * | 2022-01-04 | 2022-10-14 | 中车株洲电力机车有限公司 | Urban electric motor train unit, rescue mode analysis method, brake control method and system |
| CN116729335B (en) * | 2023-07-25 | 2024-04-02 | 克诺尔车辆设备(苏州)有限公司 | Vehicle brake control system and control method |
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