An emergency braking and parking system

Abstract

The present invention is an emergency braking and parking system, which is part of an automotive braking system. It includes a front axle air reservoir, a handbrake switch, a front axle parking valve, a rear axle parking valve, a rear axle air reservoir, a brake cylinder, and a spring brake cylinder. The various devices are connected by pipelines to form a safe and effective braking and parking system. It is applicable to the braking and parking of large, medium, and small trucks and trailers; in case of emergency, it can enable all the wheels of the whole vehicle to achieve rapid emergency braking and safe stopping, and when parking, it can make all the wheels of the whole vehicle play a parking role. In addition, by adding a computer controller, a solenoid valve, and a double-pass check valve, the present invention enables the emergency braking and parking system to be applicable to special vehicles, and in case of emergency, it can be operated through a control center or a third party to achieve emergency braking, safe stopping, and parking.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle braking systems, and particularly to an emergency braking and parking system. Background Art

[0002] At present, parking of large, medium and small trucks and trailers mostly adopts parking of the main vehicle rear axle, mostly uses spring brake cylinders to cut off air for parking, and the front axle does not park. When the vehicle is parked heavily on special sections, due to the single parking of its vehicle body, it is easy to cause traffic accidents due to insufficient parking force. Since each wheel hub of the front axle of the main vehicle has no parking function and completely relies on the wheel hubs of the rear axle for parking. Therefore, effective parking cannot be fully achieved, and there are serious safety hazards.

[0003] In addition, at present, the foot brakes of large, medium and small trucks and trailers control air pressure braking. The control of air pressure is affected by many factors and cannot make all the compressed air in the air storage tank participate in braking in a short time, failing to achieve the purpose of emergency braking and there are serious safety hazards. Summary of the Invention

[0004] In view of the above problems, the present invention provides an emergency braking and parking system which can enable all wheel hubs to achieve rapid emergency braking in an emergency, so as to realize safe parking; and can enable all wheel hubs to achieve a parking function when parking, forming effective parking.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An emergency braking and parking system, which includes a front axle air storage tank, a hand brake switch, a front axle parking valve, a rear axle parking valve, a rear axle air storage tank, a brake slave cylinder and a spring brake cylinder; the air inlet of the hand brake switch is connected to the front axle air storage tank through a pipeline, and its air outlet is respectively connected to the hand brake interfaces of the front axle parking valve and the rear axle parking valve through pipelines; the air inlets of the front axle parking valve and the rear axle parking valve are respectively connected to the front axle air storage tank and the rear axle air storage tank through pipelines, their control ports are respectively connected to the master pump controller through pipelines, their air outlets are respectively connected to the brake slave cylinder and the brake air chamber ports of the spring brake cylinder through pipelines, and the rear axle parking valve further has a second air inlet which is connected to the rear axle air storage tank through a pipeline.

[0007] Preferably, the emergency braking and parking system is further provided with a relay valve. The air outlet of the hand brake switch is connected to the control port of the relay valve through a pipeline, the hand brake interfaces of the front axle parking valve and the rear axle parking valve are respectively connected to the air outlet of the relay valve through pipelines, and the air inlet of the relay valve is connected to the rear axle air storage tank through a pipeline.

[0008] Preferably, the rear axle parking valve can be connected to a plurality of spring brake cylinders through pipelines.

[0009] Preferably, the front axle parking valve can be connected to several brake cylinders through pipelines.

[0010] Preferably, the relay valve can be connected to several rear axle parking valves through pipelines, and through several rear axle parking valves to several spring brake cylinders.

[0011] Preferably, the emergency braking and parking system further comprises a computer controller, a solenoid valve, and a two-way check valve. The computer controller is connected to the solenoid valve through a power line. The air inlet of the solenoid valve is connected to the rear axle air storage tank through a pipeline, and its air outlet is respectively connected to the control port of the front axle parking valve, the control port of the rear axle parking valve, and the brake master cylinder controller through two two-way check valves.

[0012] Preferably, the spring brake chamber port of the spring brake cylinder is connected to the rear axle air storage tank through a pipeline.

[0013] Preferably, both the front axle parking valve and the rear axle parking valve can be replaced with parking valves of the same type.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. In case of emergency, the present invention can enable all wheel hubs to achieve rapid emergency braking, so as to realize safe parking; when parking, it can enable all wheel hubs to achieve the parking function and form effective parking.

[0016] 2. By adding a computer controller, a solenoid valve, and a two-way check valve, the present invention can make the emergency braking and parking system applicable to special vehicles, and can achieve emergency braking and safe parking and parking through the control center or a third person in case of emergency.

[0017] 3. By connecting the spring brake chamber port of the spring brake cylinder to the rear axle air storage tank through a pipeline, when there is no air pressure in the whole vehicle air storage tank, the spring brake cylinder achieves air cut-off parking.

[0018] 4. The present invention is applicable to the emergency braking and parking of large, medium, and small trucks and trailers, and has high safety and reliability, good applicability, and strong versatility.

[0019] 5. The overall design concept of the present invention is ingenious, and the installation and implementation are convenient, and it can be widely promoted and applied. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a schematic structural diagram of the present invention after adding a relay valve;

[0022] Figure 3 is a schematic structural diagram of the present invention after adding a computer controller, a solenoid valve, and a two-way check valve;

[0023] Figure 4 Schematic diagram of the interface of the handbrake switch

[0024] Figure 5 Schematic diagram of the interface of the relay valve

[0025] Figure 6 Schematic diagram of the interface of the front axle parking valve

[0026] Figure 7 Schematic diagram of the interface of the rear axle parking valve

[0027] Figure 8 Schematic diagram of the interface of the brake cylinder

[0028] Figure 9 Schematic diagram of the interface of the spring brake cylinder

[0029] Figure 10 Schematic diagram of the interface of the solenoid valve

[0030] Figure 1 —10, 1—front axle air reservoir, 2—handbrake switch, 3—relay valve, 4—front axle parking valve, 5—rear axle parking valve, 6—rear axle air reservoir, 7—brake cylinder, 8—spring brake cylinder, 9—computer controller, 10—solenoid valve, 11—two-way check valve, 12—master pump controller, 13—air inlet of the handbrake switch, 14—air outlet of the handbrake switch, 15—control port of the relay valve, 16—air outlet of the relay valve, 17—air inlet of the relay valve, 18—handbrake interface of the front axle parking valve, 19—air inlet of the front axle parking valve, 20—control port of the front axle parking valve, 21—air outlet of the front axle parking valve, 22—handbrake interface of the rear axle parking valve, 23—air inlet of the rear axle parking valve, 24—control port of the rear axle parking valve, 25—air outlet of the rear axle parking valve, 26—second air inlet of the rear axle parking valve, 27—brake air chamber port of the brake cylinder, 28—brake air chamber port of the spring brake cylinder, 29—spring brake air chamber port of the spring brake cylinder, 30—air inlet of the solenoid valve, 31—air outlet of the solenoid valve Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0032] As Figure 1As shown in the figure, the present invention is an emergency braking and parking system, which includes a front axle air reservoir 1, a handbrake switch 2, a front axle parking valve 4, a rear axle parking valve 5, a rear axle air reservoir 6, a brake cylinder 7, and a spring brake cylinder 8.

[0033] The air inlet 13 of the handbrake switch is connected to the front axle air reservoir 1 through a pipeline, and the air outlet 14 of the handbrake switch is respectively connected to the handbrake interface 18 of the front axle parking valve and the handbrake interface 22 of the rear axle parking valve through pipelines. The air inlets 19 of the front axle parking valve and 23 of the rear axle parking valve are respectively connected to the front axle air reservoir 1 and the rear axle air reservoir 6 through pipelines. The control ports 20 of the front axle parking valve and 24 of the rear axle parking valve are respectively connected to the master pump controller 12 through pipelines. The air outlets 21 of the front axle parking valve and 25 of the rear axle parking valve are respectively connected to the brake air chamber port 27 of the brake cylinder and the brake air chamber port 28 of the spring brake cylinder through pipelines. The rear axle parking valve further has a second air inlet 26, and the second air inlet 26 of the rear axle parking valve is connected to the rear axle air reservoir 6 through a pipeline.

[0034] As Figure 2 shown in the figure, the emergency braking and parking system further includes a relay valve 3. The air outlet 14 of the handbrake switch is connected to the control port 15 of the relay valve through a pipeline. The handbrake interfaces 18 of the front axle parking valve and 22 of the rear axle parking valve are respectively connected to the air outlet 16 of the relay valve through pipelines. The air inlet 17 of the relay valve is connected to the rear axle air reservoir 6 through a pipeline.

[0035] The working principle is as follows: When the vehicle is driving normally, the gas in the front axle air storage tank 1 is connected through the air inlet 13 of the hand brake switch and the air inlet 19 of the front axle parking valve and enters the hand brake switch 2 and the front axle parking valve 4 respectively. When the hand brake switch 2 is turned on, the air pressure at its air inlet 13 is connected to the air outlet 14, and enters the relay valve 3 through the air outlet 14 of the hand brake switch and the control port 15 of the relay valve; then it is shunted by the air outlet 16 of the relay valve, and the shunted gas enters the front axle parking valve 4 and the rear axle parking valve 5 through the hand brake interface 18 of the front axle parking valve and the hand brake interface 22 of the rear axle parking valve respectively; at this time, the air pressure at the hand brake interface 18 of the front axle parking valve pushes the cylinder in the front axle parking valve 4 to its air inlet 19, sealing the air passage from 19 to 21, so that when driving and braking, the gas in the master pump controller 12 can enter the front axle parking valve 4 through its control port 20 for normal driving braking, and enter the brake cylinder 7 through its air outlet 21, and the brake cylinder 7 performs the braking action; similarly, since the air inlet 23 of the rear axle parking valve is connected to the rear axle air storage tank 6, the air pressure at the hand brake interface 22 of the rear axle parking valve pushes the cylinder in the rear axle parking valve 5 to its air inlet 23, sealing the air passage from 22 to 23, so that when driving and braking, the gas in the master pump controller 12 can enter the rear axle parking valve 5 through its control port 24, and enter the spring brake cylinder 8 through its air outlet 25 and the brake air chamber port 28 of the spring brake cylinder, and the spring brake cylinder 8 performs the braking action. When parking, pull the hand brake switch 2 so that the gas in the front axle air storage tank 1 cannot enter the relay valve 3; at this time, the air pressure at the air inlet 19 of the front axle parking valve pushes the cylinder in the front axle parking valve 4 to its hand brake interface 18, sealing the hand brake interface 18; at the same time, the air pressure of the front axle parking valve 19 enters the brake cylinder 7 through its air outlet 21, and the brake cylinder 7 performs the braking action for parking; similarly, the air pressure at the air inlet 23 of the rear axle parking valve pushes the cylinder in the rear axle parking valve 5 to its hand brake interface 22, sealing the hand brake interface 22, and at the same time, the air pressure of the rear axle parking valve 5 enters the brake air chamber port 28 of the spring brake cylinder through its air outlet 25 for braking action.

[0036] It should be noted that the air pressure of the front axle air reservoir 1 passes through the hand brake switch 2 and leads to the front wheel parking valve 4 and the rear wheel parking valve 5. When the air pressure is insufficient, the braking and parking effect will be affected. Therefore, the relay valve 3 is set. The relay valve 3 works independently and is controlled by the hand brake switch 2. When the air pressure of the hand brake switch 2 is insufficient, it does not affect the normal operation of the relay valve 3. The air pressure of the rear axle air reservoir 6 quickly enters from the air inlet 17 of the relay valve and is output from the air outlet 16 of the relay valve. It directly works by using the air pressure of the rear axle air reservoir 6, effectively enabling the air pressure of the rear axle air reservoir 6 to enter the hand brake interface 18 of the front axle parking valve and the hand brake interface 22 of the rear axle parking valve, so as to achieve an ideal parking effect. The relay valve 3 can play a role in balancing the braking air pressure and ensure the normal operation of the front wheel parking valve and the rear wheel parking valve. In addition, for the second air inlet 26 of the rear axle parking valve, the chamber connected to its air inlet 26 always has air. When air pressure enters its control port 24, the piston in the rear axle parking valve 5 moves downward to push open its valve, and the air pressure in the chamber connected to its air inlet 26 enters the spring brake cylinder 8 from its air outlet 25, thereby performing a braking action.

[0037] When the vehicle using this emergency braking and parking system is a two-axle vehicle, the air outlet 21 of the front axle parking valve and the air outlet 25 of the rear axle parking valve can be respectively connected to two brake cylinders 7 and two spring brake cylinders 8; when the vehicle using this emergency braking and parking system is a three-axle vehicle, the air outlet 25 of the rear axle parking valve can be changed to be connected to four spring brake cylinders 8; when the vehicle using this emergency braking and parking system is a four-axle vehicle, the air outlet 21 of the front axle parking valve and the air outlet 25 of the rear axle parking valve can be respectively connected to four brake cylinders 7 and four spring brake cylinders 8; when the vehicle using this emergency braking and parking system is a trailer, on the basis of a three-axle vehicle, an additional rear axle valve with a parking valve 5 and six spring brake cylinders 8 can be added, and the newly added rear axle valve with a parking valve 5 can be connected to the relay valve 3. In addition, the front axle parking valve 4 and the rear axle parking valve 5 of the present invention can both be replaced with other parking valves of the same type, such as a front axle independent parking valve, a rear axle relay valve with a parking valve, a three-axle valve with a parking valve, etc., and their braking and parking effects will not change.

[0038] In order to enable this emergency braking and parking system to perform braking or parking through the control center or the operation of a third party. Such as Figure 3As shown in the figure, the emergency braking and parking system is further provided with a computer controller 9, a solenoid valve 10, and a two-way check valve 11. The computer controller 9 is connected to the solenoid valve 10 through a power line. The air inlet 30 of the solenoid valve is connected to the rear axle air outlet cylinder 6 through a pipeline. The air outlet 31 of the solenoid valve is respectively connected to the control port 20 of the front axle parking valve, the control port 24 of the rear axle parking valve, and the master cylinder controller 12 through two two-way check valves 11. During normal driving braking, the gas in the master cylinder controller 12 can push the cylinder in the two-way check valve 11 to the other side, and enter the front axle parking valve 4 and the rear axle parking valve 5 respectively through the control port 20 of the front axle parking valve and the control port 24 of the rear axle parking valve, driving the brake cylinder 7 and the spring brake cylinder 8 to brake. Since the computer controller 9 communicates wirelessly with the control center, when the control center needs to remotely control the vehicle, it can send an instruction to the computer controller 9. The computer controller 9 controls the solenoid valve 10 to open, so that gas enters the air inlet 30 of the solenoid valve, and pushes the cylinder in the two-way check valve 11 to the other side, and enters the front axle parking valve 4 and the rear axle parking valve 5 respectively through the control port 20 of the front axle parking valve and the control port 24 of the rear axle parking valve, driving the brake cylinder 7 and the spring brake cylinder 8 to brake. In addition, a third-person operation button is provided on the computer controller 9. When the operation button is turned on, the computer controller can similarly brake through the solenoid valve 10 and the two-way check valve 11.

[0039] In order to further improve the reliability of the emergency braking and parking system and avoid parking failure when there is no air pressure in the whole vehicle air storage cylinder. The present invention uses the air cut-off parking function of the spring brake cylinder 8 for braking and parking. The spring brake air chamber port 29 of the spring brake cylinder 8 is not ventilated to achieve the principle of air cut-off parking. The spring brake air chamber port 29 of the spring brake cylinder is connected to the rear axle air storage cylinder 6 through a pipeline. During normal vehicle driving, it does not affect the normal use of braking. When there is no air pressure in the whole vehicle air storage cylinder, the spring brake cylinder 8 reaches air cut-off braking and parking.

[0040] The air storage cylinder, handbrake switch, relay valve, front axle parking valve, rear axle parking valve, brake cylinder, spring brake cylinder, computer controller, solenoid valve, and two-way check valve mentioned in the present invention are all prior arts and can be purchased in the market. Their internal structures are not shown in the present invention.

Claims

1. An emergency braking and parking system, characterized in that: the emergency braking and parking system includes a front axle air reservoir, a handbrake switch, a front axle parking valve, a rear axle parking valve, a rear axle air reservoir, a brake slave cylinder and a spring brake cylinder; the air inlet of the handbrake switch is connected to the front axle air reservoir through a pipeline, and its air outlet is respectively connected to the handbrake interfaces of the front axle parking valve and the rear axle parking valve through pipelines; the air inlets of the front axle parking valve and the rear axle parking valve are respectively connected to the front axle air reservoir and the rear axle air reservoir through pipelines, their control ports are respectively connected to the master pump controller through pipelines, and their air outlets are respectively connected to the brake slave cylinder and the air chamber port of the spring brake cylinder through pipelines. The rear axle parking valve also has a second air inlet, and the second air inlet is connected to the rear axle air reservoir through a pipeline; the emergency braking and parking system is also provided with a relay valve, the air outlet of the handbrake switch is connected to the control port of the relay valve through a pipeline, the handbrake interfaces of the front axle parking valve and the rear axle parking valve are respectively connected to the air outlet of the relay valve through pipelines, and the air inlet of the relay valve is connected to the rear axle air reservoir through a pipeline; the rear axle parking valve can be connected to a plurality of spring brake cylinders through pipelines; the front axle parking valve can be connected to a plurality of brake slave cylinders through pipelines; the relay valve can be connected to a plurality of rear axle parking valves through pipelines and connected to a plurality of spring brake cylinders through a plurality of rear axle parking valves; the emergency braking and parking system is also provided with a computer controller, a solenoid valve, and a double-check non-return valve. The computer controller is connected to the solenoid valve through a power line. The air inlet of the solenoid valve is connected to the rear axle air reservoir through a pipeline, and its air outlet is respectively connected to the control ports of the front axle parking valve, the control port of the rear axle parking valve, and the master brake pump controller through two double-check non-return valves; the air chamber port of the spring brake cylinder of the spring brake cylinder is connected to the rear axle air reservoir through a pipeline; the front axle parking valve and the rear axle parking valve can both be replaced with parking valves of the same type.

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