Automatic and manual superimposed parking brake system and method for railway wagon

Abstract

The present application belongs to the field of railway freight car technology, and particularly relates to a railway freight car automatic and manual superimposed parking brake system and method. The present application comprises a transmission lever rotatably connected to a vehicle chassis, and the other end of the transmission lever is rotatably connected with a hand brake pull rod, a foundation brake pull rod and an automatic parking chain respectively. The present application further comprises a foundation brake system, a hand brake and an automatic parking brake cylinder, the other end of the foundation brake pull rod is connected with the foundation brake system, a hand brake chain is connected between the other end of the hand brake pull rod and the output end of the hand brake, and a parking brake cylinder push rod is connected between the other end of the automatic parking chain and the output end of the automatic parking brake cylinder. The present application provides a railway freight car automatic and manual superimposed parking brake system and method, and the automatic parking device and the manual parking device are both connected by a chain, and do not affect each other when used separately.

Description

Technical Field

[0001] This invention belongs to the field of railway freight car technology, and specifically relates to an automatic and manual superimposed parking brake system and method for railway freight cars. Background Technology

[0002] Currently, the main anti-runaway measures adopted by railway freight cars at home and abroad to ensure the safe parking of trains and prevent vehicles from running away are traditional manual operation of handbrakes and the placement of anti-runaway iron shoes. These measures are cumbersome and labor-intensive. Especially under the new situation of railway freight cars being pushed with large tonnage and long formations, manual parking operation is labor-intensive, inefficient, and carries certain safety risks.

[0003] To further improve the reliability and efficiency of parking brakes, the research and development of automatic parking systems is being promoted both domestically and internationally. Currently, individual parking brake systems have completed testing and verification, but there is no experience in mass production and application. How to verify the reliability of automatic parking systems while ensuring vehicle operational safety has become a pressing new problem that needs to be solved. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, the present invention aims to provide an automatic and manual superimposed parking brake system and method for railway freight cars. This system can be used simultaneously or individually. Both the automatic parking device and the manual parking device are softly connected by a chain, ensuring that they do not interfere with each other when used individually. This system can serve as a solution for verifying the reliability of automatic parking devices for railway freight cars, and also as a vehicle installation scheme for verifying the reliability of automatic parking systems with different structures and performance.

[0005] The technical solution adopted in this invention is as follows: An automatic and manual superimposed parking brake system for railway freight cars includes a transmission lever rotatably connected to the vehicle underframe. The other end of the transmission lever is rotatably connected to a handbrake lever, a basic brake lever, and an automatic parking chain. The automatic parking chain and the manual parking lever are located on the same side of the transmission lever, and the basic brake lever is located on the other side of the transmission lever. It also includes a basic braking system, a handbrake and an automatic parking brake cylinder. The other end of the basic brake lever is connected to the basic braking system. The other end of the handbrake lever is connected to the output end of the handbrake via a handbrake chain. The other end of the automatic parking chain is connected to the output end of the automatic parking brake cylinder via a parking brake cylinder push rod.

[0006] Independent Operation: After the vehicle stops normally, as the main air duct exhausts air, the automatic parking brake cylinder exhausts air simultaneously, causing the parking brake cylinder push rod to retract. This, in turn, drives the base brake lever via the transmission lever, applying pressure to the vehicle. Before the vehicle starts running, the locomotive charges the main air duct, simultaneously charging the automatic parking brake cylinder. The automatic parking brake cylinder begins to release pressure, the parking brake cylinder push rod extends, and the transmission lever swings in the opposite direction, automatically releasing the parking brake system. When manual parking is required, the manual parking device is operated by pulling the handbrake chain and lever, causing the transmission lever to swing and apply pressure to the vehicle. The parking effect is maintained until the handbrake is manually released.

[0007] Superimposed Application: After the vehicle stops normally, the automatic parking brake activates as the main air duct exhausts air, simultaneously engaging the manual parking brake. The vehicle remains parked until both parking brakes are fully released. Before driving, manually release the manual parking brake by operating the handbrake and handwheel, then allow air to flow through the main air duct. This automatically releases the automatic parking brake, thus disengaging the entire vehicle parking system.

[0008] This invention combines an automatic parking brake and a manual parking brake. The automatic parking brake activates automatically in response to changes in the vehicle's main air duct pressure, while the manual parking brake is operated manually. The two parking brakes complement each other, improving adaptability and vehicle safety. Since both the automatic and manual parking brakes are softly connected via chains, when one is activated, the chain of the other naturally loosens, without affecting the swing of the transmission lever and thus the vehicle's parking brake. Therefore, the automatic and manual parking brakes can operate independently or in combination without interfering with each other. The two parking brakes, combined with the transmission lever, have a simple and reliable structure, and are easy to assemble and maintain.

[0009] As a preferred embodiment of the present invention, the input end of the parking brake cylinder is connected to an automatic parking line, and the other end of the automatic parking line is directly or indirectly connected to the vehicle's main air duct.

[0010] After the vehicle stops normally, as the main air duct exhausts air, the automatic parking brake cylinder simultaneously exhausts air, causing the parking brake cylinder push rod to retract. This retraction, via a transmission lever, drives the base brake lever, initiating braking. This braking effect will be maintained until the vehicle's main air duct refills.

[0011] Before the vehicle starts running, the locomotive charges the main air pipe with air, and the automatic parking brake cylinder is charged with air at the same time. The automatic parking brake cylinder begins to release, the parking brake cylinder push rod extends, the transmission lever swings in the opposite direction, and the parking brake system automatically releases.

[0012] As a preferred embodiment of the present invention, a handbrake handwheel is connected to one or both sides of the input end of the handbrake.

[0013] When the automatic parking system malfunctions or other situations require manual parking, the manual parking device is operated by manually operating the handbrake handwheel. The handbrake pulls the handbrake chain and handbrake lever, causing the transmission lever to swing and the vehicle to be braked. The parking effect will be maintained until the handbrake is manually released.

[0014] As a preferred embodiment of the present invention, a fixed seat is fixed on the vehicle chassis, and the lower end of the transmission lever is connected to the fixed seat through a first round pin.

[0015] As a preferred embodiment of the present invention, one end of the automatic parking chain is connected to the transmission lever via a second round pin.

[0016] As a preferred embodiment of the present invention, one end of the basic brake lever is connected to the transmission lever via a third circular pin.

[0017] As a preferred embodiment of the present invention, one end of the manual parking lever is connected to the transmission lever via a fourth round pin.

[0018] As a preferred embodiment of the present invention, both the handbrake and the automatic parking brake cylinder are installed at the bottom of the vehicle.

[0019] As a preferred embodiment of the present invention, the automatic parking brake cylinder has a manual release unit.

[0020] A method for automatic and manual superimposed parking brakes for railway freight cars includes the following steps: Independent use: After the vehicle stops normally, as the main air duct exhausts air, the automatic parking brake cylinder exhausts air simultaneously, the parking brake cylinder push rod retracts, and through the transmission lever drives the basic brake lever to brake the vehicle. Before the vehicle starts running, the locomotive charges the main air pipe with air, and the automatic parking brake cylinder is charged with air at the same time. The automatic parking brake cylinder begins to release, the parking brake cylinder push rod extends, the transmission lever swings in the opposite direction, and the parking brake system automatically releases. When manual parking is required, the manual parking device is operated by manually operating the handbrake mechanism, pulling the handbrake chain and handbrake lever, causing the transmission lever to swing and the vehicle to be braked. The parking effect will be maintained until the handbrake is manually released. Superimposed application: After the vehicle stops normally, the automatic parking device generates a braking effect as the vehicle's main air duct exhausts air. At the same time, operating the handbrake handwheel causes the manual parking device to generate braking simultaneously. The vehicle parking effect will be maintained until both parking devices are fully released. Before the vehicle is put into operation, the handbrake is manually operated to release the manual parking device. Then, the main air duct is circulated with air, and the automatic parking device is automatically released, thus releasing the entire vehicle parking system.

[0021] The beneficial effects of this invention are as follows: This invention combines an automatic parking brake and a manual parking brake. The automatic parking brake activates automatically in response to changes in the vehicle's main air duct pressure, while the manual parking brake is operated manually. The two parking brakes complement each other, improving adaptability and vehicle safety. Since both the automatic and manual parking brakes are softly connected via chains, when one is activated, the chain of the other naturally loosens, without affecting the swing of the transmission lever and thus the vehicle's parking brake. Therefore, the automatic and manual parking brakes can operate independently or in combination without interfering with each other. The two parking brakes, combined with the transmission lever, have a simple and reliable structure, and are easy to assemble and maintain. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] In the diagram: 1-Automatic parking brake device; 2-Manual parking brake device; 3-Transmission lever; 4-Basic brake lever; 5-Fixed seat; 11-Automatic parking brake cylinder; 12-Automatic parking chain; 13-Automatic parking line; 14-Parking brake cylinder push rod; 15-Second round pin; 21-Handbrake mechanism; 22-Handbrake chain; 23-Handbrake lever; 24-Handbrake handwheel; 25-Fourth round pin; 31-First round pin; 41-Third round pin. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the invention can be combined with each other.

[0026] like Figure 1As shown, the automatic and manual superimposed parking brake system for railway freight cars in this embodiment includes a transmission lever 3 rotatably connected to the vehicle chassis. The other end of the transmission lever 3 is rotatably connected to a handbrake lever 23, a basic brake lever 4, and an automatic parking chain 12. The automatic parking chain 12 and the manual parking lever are located on the same side of the transmission lever 3, and the basic brake lever 4 is located on the other side of the transmission lever 3. It also includes a basic braking system, a handbrake 21 and an automatic parking brake cylinder 11. The other end of the basic brake lever 4 is connected to the basic braking system. The other end of the handbrake lever 23 is connected to the output end of the handbrake 21 by a handbrake chain 22. The other end of the automatic parking chain 12 is connected to the output end of the automatic parking brake cylinder 11 by a parking brake cylinder push rod 14.

[0027] Independent Operation: After the vehicle stops normally, as the main air duct exhausts air, the automatic parking brake cylinder 11 exhausts air synchronously, and the parking brake cylinder push rod 14 retracts, driving the basic brake lever 4 through the transmission lever 3 to brake the vehicle. Before the vehicle starts running, the locomotive charges the main air duct, and the automatic parking brake cylinder 11 is charged synchronously. The automatic parking brake cylinder 11 begins to release, the parking brake cylinder push rod 14 extends, the transmission lever 3 swings in the opposite direction, and the parking brake system automatically releases. When manual parking is required, the manual parking device 2 is operated by operating the handbrake 21, pulling the handbrake chain 22 and the handbrake lever, causing the transmission lever 3 to swing, thus braking the vehicle. The parking effect will be maintained until the handbrake is manually released.

[0028] Superimposed Application: After the vehicle stops normally, the automatic parking device 1 applies a braking effect as the vehicle's main air duct exhausts air. Simultaneously, operating the handbrake 21 and handbrake handwheel 24 causes the manual parking device 2 to apply braking simultaneously. The vehicle parking effect will be maintained until both parking devices are fully released. Before the vehicle is started, the handbrake 21 is manually operated to release the manual parking device 2. Then, air is supplied to the main air duct, and the automatic parking device 1 automatically releases, thus releasing the entire vehicle parking system.

[0029] The present invention combines an automatic parking device 1 and a manual parking device 2. The automatic parking device 1 activates automatically in response to changes in the vehicle's main air duct pressure, while the manual parking device 2 is operated manually. These two parking devices complement each other, improving the adaptability of the parking system and enhancing vehicle operating safety. Since both the automatic parking device 1 and the manual parking device 2 are softly connected via chains, when one device is activated, the chain of the other device naturally loosens, without affecting the swing of the transmission lever 3, and consequently, without affecting the vehicle's parking brake. Therefore, the automatic and manual parking brake devices can operate independently or in combination without interfering with each other. The two parking brake devices, combined with the transmission lever 3, have a simple and reliable structure, and are easy to assemble and maintain.

[0030] The input end of the parking brake cylinder is connected to the automatic parking line 13, and the other end of the automatic parking line 13 is directly or indirectly connected to the vehicle's main air duct.

[0031] After the vehicle stops normally, as the main air duct exhausts air, the automatic parking brake cylinder 11 also exhausts air synchronously. The parking brake cylinder push rod 14 retracts, which drives the basic brake lever 4 through the transmission lever 3 to brake the vehicle. This braking effect will be maintained until the vehicle's main air duct is refilled with air.

[0032] Before the vehicle starts running, the locomotive charges the main air pipe with air, and the automatic parking brake cylinder 11 is charged with air at the same time. The automatic parking brake cylinder 11 begins to release, the parking brake cylinder push rod 14 extends, the transmission lever 3 swings in the opposite direction, and the parking brake system automatically releases.

[0033] For ease of operation, a handbrake handwheel 24 is connected to one or both sides of the input end of the handbrake 21.

[0034] When the automatic parking system malfunctions or other situations require manual parking, the manual parking device 2 is operated manually. By operating the handbrake handwheel 24 of the handbrake mechanism 21, the handbrake mechanism 21 pulls the handbrake chain 22 and the handbrake lever, causing the transmission lever 3 to swing, thereby braking the vehicle. The parking effect will be maintained until the handbrake is manually released.

[0035] Furthermore, a fixed seat 5 is fixed on the vehicle chassis, and the lower end of the transmission lever 3 is connected to the fixed seat 5 through a first round pin 31.

[0036] One end of the automatic parking chain 12 is connected to the transmission lever 3 via a second round pin 15.

[0037] One end of the basic brake lever is connected to the transmission lever 3 via a third circular pin 41.

[0038] One end of the manual parking lever is connected to the transmission lever 3 via the fourth round pin 25.

[0039] Both the handbrake 21 and the automatic parking brake cylinder 11 are installed at the bottom of the vehicle.

[0040] The automatic parking brake cylinder 11 has a manual release unit.

[0041] The automatic and manual superimposed parking brake method for railway freight cars in this embodiment includes the following steps: Independent use: After the vehicle stops normally, as the main air duct exhausts air, the automatic parking brake cylinder 11 exhausts air simultaneously, and the parking brake cylinder push rod 14 retracts, driving the base brake lever 4 through the transmission lever 3 to apply brakes to the vehicle. This braking effect will be maintained until the vehicle's main air duct refills. Because the manual parking device 2 and the transmission lever 3 are connected by a chain, when the automatic parking device 1 is activated, the manual parking device 2 will not affect the swing of the transmission lever 3, and therefore will not affect the vehicle's parking brake.

[0042] Before the vehicle starts running, the locomotive charges the main air pipe with air, and the automatic parking brake cylinder 11 is charged with air at the same time. The automatic parking brake cylinder 11 begins to release, the parking brake cylinder push rod 14 extends, the transmission lever 3 swings in the opposite direction, and the parking brake system automatically releases.

[0043] When the automatic parking system malfunctions or other situations require manual parking, the manual parking device 2 is operated by manually turning the handbrake 21 handwheel. The handbrake 21 pulls the handbrake chain 22 and the handbrake lever, causing the transmission lever 3 to swing and apply braking force to the vehicle. The parking effect will be maintained until the handbrake is manually released. Because the automatic parking device 1 and the transmission lever 3 are connected by a chain, the automatic parking brake does not affect the manual parking device 2.

[0044] Superimposed application: In verifying the reliability of the automatic parking device 1 or other special circumstances, the automatic parking device 1 and the manual parking device 2 can be used in combination. After the vehicle stops normally, the automatic parking device 1 generates a braking effect as the vehicle's main air duct exhausts air. At the same time, the handbrake 21 handwheel is operated, causing the manual parking device 2 to generate braking simultaneously. The vehicle parking effect will be maintained until both parking devices are fully released.

[0045] Before the vehicle is started, the handbrake 21 is manually operated to release the manual parking device 2. Then, the main air duct is circulated with air, and the automatic parking device 1 is automatically released, thus releasing the entire vehicle parking system.

[0046] Example: This invention connects the automatic parking device 1 and the manual parking device 2 to a lever via a flexible connection to prevent them from being used simultaneously, thus enabling them to be used in combination or independently. Other connection methods can also be used. The essence of the invention is that the automatic parking device 1 and the manual parking device 2 can work together or independently without affecting each other.

[0047] The automatic and manual parking brake superimposed system mainly consists of an automatic parking device 1, a manual parking device 2, a transmission lever 3, and a basic brake lever 4.

[0048] The automatic parking device 1 consists of an automatic parking brake cylinder 11, an automatic parking chain 12, and parking lines, etc. The automatic parking chain 12 is connected to the transmission lever 3 via a second round pin 15. The automatic parking brake cylinder 11 should have a manual release function, and the automatic parking line 13 is directly or indirectly connected to the vehicle's main air duct.

[0049] The manual parking device 2 consists of a handbrake mechanism 21, a handbrake chain 22, and a handbrake lever 23. The handbrake lever 23 is connected to the transmission lever 3 via a fourth round pin 25. Depending on the needs, the handbrake mechanism 21 may be equipped with a single-sided or double-sided handbrake handwheel 24.

[0050] One end of the transmission lever 3 is fixed to the mounting base 5 of the vehicle chassis via a first round pin 31, and the other end is connected to the automatic parking chain 12, the handbrake lever 23, and the basic brake lever 4. The automatic parking chain 12 and the handbrake lever are located on the same side, while the basic brake lever 4 is located on the other side. The efficiency of manual and automatic parking is matched by adjusting the hole spacing of the transmission lever 3.

[0051] One end of the basic brake lever 4 is connected to the transmission lever 3 via the third round pin 41, and the other end is connected to the basic brake system. It can be matched with an integrated brake system or a lever brake system as needed.

[0052] This invention is not limited to the above-described optional embodiments. Anyone can derive other various forms of products under the guidance of this invention. However, regardless of any changes made in their shape or structure, any technical solution that falls within the scope of the claims of this invention shall be protected by this invention.

Claims

1. A railway freight car automatic and manual superimposed parking brake system, characterized in that: The transmission lever (3) is rotatably connected to the vehicle chassis. The other end of the transmission lever (3) is rotatably connected to a handbrake lever (23), a basic brake lever (4), and an automatic parking chain (12). The automatic parking chain (12) and the handbrake lever are located on the same side of the transmission lever (3), and the basic brake lever (4) is located on the other side of the transmission lever (3). It also includes a basic braking system, a handbrake (21) and an automatic parking brake cylinder (11). The other end of the basic brake lever (4) is connected to the basic braking system. The other end of the handbrake lever (23) is connected to the output end of the handbrake (21) by a handbrake chain (22). The other end of the automatic parking chain (12) is connected to the output end of the automatic parking brake cylinder (11) by a parking brake cylinder push rod (14).

2. The automatic and manual superimposed parking brake system for railway freight cars according to claim 1, characterized in that: The input end of the parking brake cylinder is connected to an automatic parking line (13), and the other end of the automatic parking line (13) is directly or indirectly connected to the vehicle's main air duct.

3. The automatic and manual superimposed parking brake system for railway freight cars according to claim 1, characterized in that: The handbrake mechanism (21) has a handbrake wheel (24) connected to one or both sides of its input end.

4. The automatic and manual superimposed parking brake system for railway freight cars according to claim 1, characterized in that: A fixed seat (5) is fixed on the vehicle chassis, and the lower end of the transmission lever (3) is connected to the fixed seat (5) through the first round pin (31).

5. The automatic and manual superimposed parking brake system for railway freight cars according to claim 1, characterized in that: One end of the automatic parking chain (12) is connected to the transmission lever (3) via a second round pin (15).

6. The automatic and manual superimposed parking brake system for railway freight cars according to claim 1, characterized in that: One end of the basic brake lever is connected to the transmission lever (3) via a third round pin (41).

7. The automatic and manual superimposed parking brake system for railway freight cars according to claim 1, characterized in that: One end of the manual parking lever is connected to the transmission lever (3) via the fourth round pin (25).

8. The automatic and manual superimposed parking brake system for railway freight cars according to claim 1, characterized in that: The handbrake (21) and the automatic parking brake cylinder (11) are both installed at the bottom of the vehicle.

9. The automatic and manual superimposed parking brake system for railway freight cars according to claim 1, characterized in that: The automatic parking brake cylinder (11) has a manual release unit.

10. A method for automatic and manual superimposed parking brakes for railway freight cars, using the automatic and manual superimposed parking brake system for railway freight cars as described in any one of claims 1 to 9, characterized in that: Includes the following steps: Independent use: After the vehicle stops normally, as the main air duct exhausts air, the automatic parking brake cylinder (11) exhausts air synchronously, the parking brake cylinder push rod (14) retracts, and drives the basic brake lever (4) through the transmission lever (3) to make the vehicle brake. Before the vehicle is in operation, the locomotive charges the main air pipe with air, and the automatic parking brake cylinder (11) is charged with air at the same time. The automatic parking brake cylinder (11) begins to release, the parking brake cylinder push rod (14) extends, the transmission lever (3) swings in the opposite direction, and the parking brake system is automatically released. When manual parking is required, the manual parking device (2) is operated manually. By operating the handbrake (21), the handbrake chain (22) and the handbrake lever are pulled, causing the transmission lever (3) to swing, so that the vehicle will be braked. The parking effect will be maintained until the handbrake is manually released. Superimposed application: After the vehicle stops normally, the automatic parking device (1) generates a braking effect as the vehicle's main air duct exhausts air. At the same time, the handbrake (21) and handbrake handwheel (24) are operated to make the manual parking device (2) generate braking synchronously. The vehicle parking effect will be maintained until both parking devices are fully released. Before the vehicle is in operation, the handbrake (21) is manually operated to release the manual parking device (2), and then the main air pipe is ventilated. The automatic parking device (1) is automatically released, and the entire vehicle parking system is released.

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