Brake control device with standby braking and remote relieving functions for railway vehicle

Abstract

The invention discloses a brake control device with standby brake and remote release functions for a railway vehicle, which is used for receiving an electronic control command signal of an electronic brake control unit on the vehicle so as to realize service brake, quick brake, emergency brake and holding brake. A relay valve is arranged to output service brake, rapid brake and holding brake; an empty and load valve is arranged; according to the input air spring pressure, the emergency braking pre-control pressure is controlled; an emergency electromagnetic valve is arranged to control on-off of emergency braking; a two-way valve is arranged; the output of external standby braking pre-control pressure and internal emergency braking pre-control pressure is realized; a pressure sensor is arranged, so that the functions of total air pressure, pre-control pressure, air spring pressure and brake pressure are achieved; and an emergency braking pre-control pressure input interface is arranged, so that remote relief of emergency braking is facilitated. According to the invention, standby brake input at different levels is facilitated; and meanwhile, an emergency braking pre-control pressure input interface is arranged, so that the emergency braking pressure can be conveniently and manually relieved in an emergency.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle braking technology, and in particular to a braking control device for rail vehicles with backup braking and remote release functions. Background Technology

[0002] A certain type of rail transit vehicle needs to be equipped with a braking control device that, in addition to service braking, rapid braking, emergency braking, and holding braking, also has the functions of braking and remotely relieving emergency braking.

[0003] Simultaneously, a compact structure, modular components, and ease of maintenance and installation are required. Therefore, a novel braking control device with backup braking and remote release functions is designed. Using an aluminum alloy air circuit board assembly as the base, a relay valve, emergency solenoid valve, empty / loaded vehicle valve, pressure sensor, test socket, and two-way valve are installed on the air circuit board assembly. An interface backplate is designed on the back of the air circuit board assembly, featuring a main air input interface, an air spring input interface, a backup brake pre-control pressure input interface, an emergency brake pre-control pressure input interface, and a brake pressure output interface. This facilitates interface with the vehicle and operation, possessing significant practical value. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a braking control device capable of performing service braking, rapid braking, emergency braking, and holding braking, while also possessing the functions of service braking and remote emergency braking relief. The braking control device of this invention features comprehensive functions, modular component design, compact structure, and ease of installation, operation, and maintenance, thus possessing significant practical value.

[0005] The objective of this invention is achieved through the following technical solutions.

[0006] A braking control device for rail vehicles with backup braking and remote release functions is provided. It receives electrical control command signals from the vehicle's electronic braking control unit to achieve service braking, rapid braking, emergency braking, and holding braking. It includes a relay valve to output service braking, rapid braking, and holding braking; an empty / loaded car valve to control the emergency braking pre-control pressure based on the input spring pressure; an emergency solenoid valve to control the on / off state of emergency braking; a bidirectional valve to output external backup braking pre-control pressure and internal emergency braking pre-control pressure; a pressure sensor to output total air pressure, pre-control pressure, spring pressure, and braking pressure; and an emergency braking pre-control pressure input interface for convenient remote release of emergency braking.

[0007] The system includes an air circuit board assembly, characterized in that the air circuit board assembly is machined with air circuit grooves, air circuit interfaces, and threaded parts for mounting; the air circuit board assembly is equipped with an interface backplate, relay valve, empty / loaded vehicle valve, emergency solenoid valve, pressure sensor, test socket, T-type test socket, electrical connector, and exhaust muffler; the interface backplate is machined with a main air input air circuit interface, an air spring air circuit input interface, a backup brake pre-control pressure input interface, an emergency brake pre-control pressure input interface, and a brake pressure output interface.

[0008] Furthermore, the main air input air circuit interface is connected to the relay valve, the main air pressure sensor, and the main air test socket inlet via the interface backplate and the internal air circuit of the air circuit board assembly; the relay valve brake pressure output interface is connected to the interface backplate; the air spring air circuit input interface is connected to the T-type test socket inlet via the interface backplate and the internal air circuit of the air circuit board assembly; the T-type test socket outlet is connected to the empty / loaded vehicle valve air spring pressure input port 1 and air spring pressure input port 2; the interface backplate emergency brake pre-control pressure input interface... The port is connected to the total air pressure input port of the empty / loaded vehicle valve; the pre-control pressure output port of the empty / loaded vehicle valve is connected to the air inlet of the emergency solenoid valve; the air outlet of the emergency solenoid valve is connected to the air inlet 1 of the two-way valve; the backup brake pre-control pressure input interface on the interface backplate is connected to the air inlet 2 of the two-way valve; the air outlet of the two-way valve is connected to the emergency brake pre-control pressure input port of the relay valve; the exhaust of the relay valve is open to the atmosphere through the exhaust silencer; the solenoid valve, emergency solenoid valve, and pressure sensor on the relay valve are electrically connected to the connector via wires.

[0009] Furthermore, the gas circuit board assembly is the base for mounting all components; the gas circuit board assembly includes a front panel and a bottom panel, which are welded together by a brazing process; the gas circuit board assembly has gas circuits machined inside; the front of the gas circuit board assembly has gas circuit interfaces, threaded holes for component mounting, module mounting holes and component codes machined; the side of the gas circuit board assembly has grounding threaded holes and grounding markings machined.

[0010] Furthermore, the interface backplate is installed on the back of the air circuit board assembly, and five O-rings are installed on the contact surface with the air circuit board assembly to ensure the air tightness of the air circuit; the interface backplate is machined with a main air input air circuit interface, an air spring air circuit input interface, a backup brake pre-control pressure input interface, an emergency brake pre-control pressure input interface, and a brake pressure output interface, and external air circuit interface codes are machined on the back.

[0011] Furthermore, the relay valve is installed on the upper left side of the air circuit board assembly via a double-ended stud and a flat washer nut; the relay valve receives commands from the electronic brake control unit and outputs service braking, rapid braking, and holding braking pressures; the relay valve receives commands from the electronic brake control unit and releases service braking, rapid braking, and holding braking pressures; the relay valve receives pre-control pressure from both valves and outputs standby braking pressure or emergency braking pressure; the relay valve releases braking pressure through an exhaust muffler on the back of the air circuit board assembly; the exhaust muffler reduces exhaust noise from the relay valve and prevents foreign objects from entering the exhaust air path from the exhaust port; a set of charging solenoid valves and exhaust solenoid valves are installed on the relay valve, which receive commands from the electronic brake control unit and adjust the pre-control pressure value in real time; a pressure sensor is installed on the relay valve, and the pressure value is fed back to the electronic brake control unit in real time to achieve closed-loop adjustment of the braking pre-control pressure value; a pressure reducing valve is installed on the relay valve to prevent the braking pre-control pressure value from being too high.

[0012] Furthermore, the empty / loaded vehicle valve is installed on the upper right side of the air circuit board assembly via a double-ended stud, a flat washer, and a nut; the empty / loaded vehicle valve adjusts the emergency braking pre-control pressure to the emergency solenoid valve input port according to the input pressure of the air spring.

[0013] Furthermore, the air spring pressure T-type test socket is installed in the upper middle part of the air circuit board assembly using hex bolts, flat washers, and spring washers, allowing an external pressure gauge to be inserted to test the air spring pressure value; the T-type test socket can supply air externally and adjust the empty and loaded vehicle valves.

[0014] Furthermore, the total air pressure sensor is installed in the upper middle part of the air circuit board assembly to provide real-time feedback of the total air pressure value to the electronic brake control unit.

[0015] Furthermore, the brake pressure sensor is installed in the lower middle part of the air circuit board assembly to provide real-time feedback of the brake pressure value to the electronic brake control unit.

[0016] Furthermore, the emergency solenoid valve is mounted on the lower left side of the air circuit board assembly via hexagon socket bolts, and is used to control the output of the emergency braking pre-control pressure value from the empty / loaded vehicle valve to the two-way valve.

[0017] Furthermore, the bidirectional valve is installed on the lower right side of the air circuit board assembly via hexagon socket bolts, flat washers, and spring washers. The bidirectional valve inlet 1 and inlet 2 receive the emergency braking and backup braking pre-control pressure from the emergency solenoid valve, respectively, and output to the relay valve pre-control pressure inlet.

[0018] Furthermore, the electrical connector is mounted on the back of the pneumatic circuit board assembly via hexagonal socket bolts, and the solenoid valve, emergency solenoid valve, and pressure sensor on the relay valve are electrically connected to the connector via wires.

[0019] Compared to existing technologies, the advantages of this invention are as follows: This invention provides a braking control device capable of performing service braking, rapid braking, emergency braking, and holding braking, while also possessing the functions of service braking and remote emergency braking relief. The braking control device of this invention features comprehensive functions, modular component design, compact structure, and ease of installation, operation, and maintenance, thus possessing significant practical value. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the air circuit of the braking control device of the present invention (the air circuit interface specifications and pressure adjustment values ​​in the figure are for illustrative purposes only).

[0021] Figures 2-3 This is a schematic diagram of the various components used in the braking control device of the present invention and their installation.

[0022] In the diagram: 1. Pneumatic circuit board assembly; 2. Relay valve; 3. Double-ended stud (mm=1.5d, M16×160); 4. Flat washer (16); 5. Hex nut (M16); 6. Emergency solenoid valve; 7. Socket head cap screw (M6×25); 8. Brake pressure sensor; 9. Two-way valve; 10. Socket head cap screw (M6×65); 11. Spring washer (6); 12. Flat washer (6); 13. Empty / loaded vehicle valve; 14. Double-ended stud (mm=2d, M12×180); 15. Flat washer (12); 16. Hex nut (M12); 17. T-type test socket; 18. Socket head cap screw (M6×20); 19. Air spring pressure sensor; 20. Total air pressure sensor; 21. Wire; 22. Cable connector; 23. Interface backplate; 24. Socket head cap screw (M10×30); 25. Flat washer (10); 26. Spring washer (10) 27. M8×30 ​​socket head cap screw; 28. 8 flat washer; 29. ​​8 spring washer; 30. electrical connector; 31. exhaust muffler. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 2-3This example is a braking control device for rail vehicles with backup braking and remote release functions, including an air circuit board assembly (1), a relay valve (2), a double-ended stud bm=1.5d M16×160 (3), a flat washer 16 (4), a hexagonal nut M16 (5), an emergency solenoid valve (6), an internal hexagonal head screw M6×25 (7), a brake pressure sensor (8), a two-way valve (9), an internal hexagonal head screw M6×65 (10), a spring washer 6 (11), a flat washer 6 (12), an empty / loaded car valve (13), and a double-ended stud bm=2d. M12×180 (14), flat washer 12 (15), hex nut M12 (16), T-type test socket (17), internal hex head screw M6×20 (18), air spring pressure sensor (19), total air pressure sensor (20), wire (21), cable connector (22), interface backplate (23), internal hex head screw M10×30 (24), flat washer 10 (25), spring washer 10 (26), internal hex head screw M8×30 ​​(27), flat washer 8 (28), spring washer 8 (29), electrical connector (30), exhaust muffler (31).

[0025] This example is a braking control device for rail vehicles with backup braking and remote relief functions. The relay valve (2) is installed on the air circuit board assembly (1) using double-ended studs bm=1.5d M16×160 (3), flat washers 16 (4), and hexagonal nuts M16 (5).

[0026] This example is a braking control device for rail vehicles with backup braking and remote release functions. An emergency solenoid valve (6) is installed on the air circuit board assembly (1) using an M6×25 socket head cap screw (7).

[0027] This example is a braking control device for rail vehicles with backup braking and remote relief functions, in which a brake pressure sensor (8) is mounted on the air circuit board assembly (1).

[0028] This example is a braking control device for rail vehicles with backup braking and remote release functions. The two-way valve (9) is installed on the air circuit board assembly (1) using M6×65 socket head cap screws (10), spring washers 6 (11), and flat washers 6 (12).

[0029] This example is a braking control device for rail vehicles with backup braking and remote relief functions. The empty and loaded car valve (13) is installed on the air circuit board assembly (1) using double-ended studs bm=2d M12×180 (14) and flat washers 12 (15).

[0030] This example is a braking control device for rail vehicles with backup braking and remote release functions, which is installed on the air circuit board assembly (1) using M6×20 (18) socket head cap screws, 6 (11) spring washers and 6 (12) flat washers.

[0031] This example is a braking control device for rail vehicles with backup braking and remote relief functions, in which a spring pressure sensor (19) is mounted on the air circuit board assembly (1).

[0032] This example is a braking control device for rail vehicles with backup braking and remote relief functions, in which the total air pressure sensor (20) is mounted on the air circuit board assembly (1).

[0033] This example describes a braking control device for rail vehicles with backup braking and remote release functions.

[0034] Connect the wire (21) to the electrical connector (3) through the cable connector (22).

[0035] This example is a braking control device for rail vehicles with backup braking and remote release functions. The interface backplate (23) is installed on the air circuit board assembly (1) using M10×30 socket head cap screws (24), flat washers 10 (25), spring washers 10 (26), M8×30 ​​socket head cap screws (27), flat washers 8 (28), and spring washers 8 (29).

[0036] This example is a braking control device for rail vehicles with backup braking and remote relief functions. The electrical connector (30) is installed on the air circuit board assembly (1) using an M6×20 socket head cap screw (18), a spring washer 6 (11), and a flat washer 6 (12).

[0037] This example describes a braking control device for rail vehicles with backup braking and remote release functions.

[0038] Install the M8×30 ​​(27) head screw, the 8 (28) flat washer, the 8 (29) spring washer, the (30) electrical connector, and the (31) exhaust muffler onto the air circuit board assembly (1).

[0039] In addition to the embodiments described above, the present invention may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by the present invention.

Claims

1. A braking control device for rail vehicles with backup braking and remote release functions, characterized in that... This device receives electronic control command signals from the vehicle's electronic brake control unit to achieve service braking, rapid braking, emergency braking, and holding braking; it is equipped with a relay valve to output service braking, rapid braking, and holding braking; it has an empty / loaded vehicle valve to control the emergency braking pre-control pressure based on the input air spring pressure; it has an emergency solenoid valve to control the on / off state of emergency braking; it has a two-way valve to output external backup braking pre-control pressure and internal emergency braking pre-control pressure; it has a pressure sensor to realize the functions of total air pressure, pre-control pressure, air spring pressure, and braking pressure; and it has an emergency braking pre-control pressure input interface for remotely relieving emergency braking.

2. A braking control device for rail vehicles with backup braking and remote release function according to claim 1, characterized in that... The system includes an air circuit board assembly, on which air circuit grooves, air circuit interfaces, and component mounting threads are machined; the air circuit board assembly is equipped with an interface backplate, relay valve, empty / loaded vehicle valve, emergency solenoid valve, pressure sensor, test socket, T-type test socket, electrical connector, and exhaust muffler; the interface backplate is machined with a main air input air circuit interface, an air spring air circuit input interface, a backup brake pre-control pressure input interface, an emergency brake pre-control pressure input interface, and a brake pressure output interface.

3. A braking control device for rail vehicles with backup braking and remote release function according to claim 2, characterized in that... The main air input air circuit interface is connected to the relay valve, main air pressure sensor, and main air test socket inlet via the interface backplate and the internal air circuit of the air circuit board assembly; the relay valve brake pressure output interface is connected to the interface backplate; the air spring air circuit input interface is connected to the T-type test socket inlet via the interface backplate and the internal air circuit of the air circuit board assembly; the T-type test socket outlet is connected to the air spring pressure input port 1 and air spring pressure input port 2 of the empty / loaded vehicle valve; the interface backplate emergency brake pre-control pressure input interface is connected to the main air pressure input port of the empty / loaded vehicle valve; the empty / loaded vehicle valve pre-control pressure output port is connected to the emergency solenoid valve inlet; the emergency solenoid valve outlet is connected to the two-way valve inlet 1; the interface backplate backup brake pre-control pressure input interface is connected to the two-way valve inlet 2; the two-way valve outlet is connected to the relay valve emergency brake pre-control pressure input port; the exhaust of the relay valve is connected to the atmosphere via an exhaust muffler; the solenoid valve, emergency solenoid valve, and pressure sensor on the relay valve are electrically connected to the connector via wires.

4. A braking control device for rail vehicles with backup braking and remote release function according to claim 2, characterized in that... The gas circuit board assembly is the base for mounting all components; the gas circuit board assembly includes a front panel and a bottom panel, which are welded together by brazing; the gas circuit board assembly has gas circuits machined inside; the front of the gas circuit board assembly has gas circuit interfaces, threaded holes for component mounting, module mounting holes and component codes; the side of the gas circuit board assembly has grounding threaded holes and grounding markings.

5. A braking control device for rail vehicles with backup braking and remote release function according to claim 2, characterized in that... The interface backplate is installed on the back of the air circuit board assembly, and five O-rings are installed on the contact surface with the air circuit board assembly to ensure the air tightness of the air circuit. The interface backplate is machined with a main air input air circuit interface, an air spring air circuit input interface, a backup brake pre-control pressure input interface, an emergency brake pre-control pressure input interface, and a brake pressure output interface, and external air circuit interface codes are machined on the back.

6. A braking control device for rail vehicles with backup braking and remote release function according to claim 2, characterized in that... The relay valve is installed on the upper left side of the air circuit board assembly. The relay valve receives commands from the electronic brake control unit and outputs service braking, rapid braking, and holding braking pressures. The relay valve also receives commands from the electronic brake control unit to release service braking, rapid braking, and holding braking pressures. The relay valve receives pre-control pressure from both valves and outputs standby braking pressure or emergency braking pressure. The relay valve releases braking pressure through an exhaust muffler on the back of the air circuit board assembly. The exhaust muffler reduces exhaust noise from the relay valve and prevents foreign objects from entering the exhaust air path from the exhaust port. The relay valve is equipped with a set of charging solenoid valves and an exhaust solenoid valve, which receive commands from the electronic brake control unit and adjust the pre-control pressure value in real time. A pressure sensor is installed on the relay valve, and the pressure value is fed back to the electronic brake control unit in real time to achieve closed-loop adjustment of the braking pre-control pressure value. A pressure reducing valve is installed on the relay valve to prevent the braking pre-control pressure value from becoming too high.

7. A braking control device for rail vehicles with backup braking and remote release function according to claim 2, characterized in that... The empty / loaded vehicle valve is installed on the upper right side of the air circuit board assembly; the empty / loaded vehicle valve adjusts the emergency braking pre-control pressure to the emergency solenoid valve input port according to the air spring input pressure; the air spring pressure is tested by a T-type test socket installed on the upper middle part of the air circuit board assembly, and an external pressure gauge can be inserted to test the air spring pressure value; the T-type test socket can be supplied with external air to adjust the empty / loaded vehicle valve.

8. A braking control device for rail vehicles with backup braking and remote release function according to claim 2, characterized in that... The total air pressure sensor is installed in the upper middle part of the air circuit board assembly to provide real-time feedback of the total air pressure value to the electronic brake control unit; the brake pressure sensor is installed in the lower middle part of the air circuit board assembly to provide real-time feedback of the brake pressure value to the electronic brake control unit; the emergency solenoid valve is installed in the lower left part of the air circuit board assembly to control the output of the emergency braking pre-control pressure value from the empty / loaded vehicle valve to the two-way valve; the two-way valve is installed in the lower right part of the air circuit board assembly, and its input ports 1 and 2 respectively receive the emergency braking and standby braking pre-control pressures from the emergency solenoid valve and output them to the pre-control pressure input port of the relay valve; the electrical connector is installed on the back of the air circuit board assembly, and the solenoid valve, emergency solenoid valve, and pressure sensor on the relay valve are electrically connected to the connector via wires.

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