Hydraulic brake energy accumulator structure

Abstract

The utility model belongs to a hydraulic braking energy accumulator structure in the technical field of vehicle hydraulic braking systems. The shell (11) is provided with an air vent (8) and an oil liquid port (10), the tank body (5) is arranged in the shell (11), the piston assembly (4) and the spring (7) are arranged in the tank body (5), one end of the spring (7) is connected with one side of the piston assembly (4), the other side of the spring (7) is connected with the shell (11) provided with the oil liquid port (10), and the other side of the piston assembly (4) is communicated with the air vent (8). The hydraulic braking energy accumulator structure is simple in structure, can effectively solve the problems that a heavy vehicle braking system is poor in braking effect, too long in braking distance, short in service life and the like in the braking process, improves the braking performance and safety of a vehicle, effectively reduces the braking distance, prolongs the service life of the braking system, and improves the safety of the vehicle. Powerful support is provided for driving safety of heavy vehicles, and the safety performance of the vehicles is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle hydraulic brake systems, and more specifically, relates to a hydraulic brake accumulator structure. Background Art

[0002] Accumulators are a common energy storage element in hydraulic circuit systems, but hydraulic brake accumulators are an advanced braking technology that can improve the braking performance and safety of heavy vehicles. They are an important component in the braking system of large vehicles such as trucks. With the continuous development and improvement of technology, the application of hydraulic brake accumulators in the field of heavy vehicles will become more extensive. Hydraulic brake accumulators are an innovative device used in the braking system of heavy vehicles. Its working principle is based on the energy conversion mechanism of liquid compression and release. Accumulators can store and release additional braking energy to improve vehicle braking performance and safety. However, the brake accumulators used in heavy trucks have problems such as poor braking effect, long braking distance, and short braking system life.

[0003] In the prior art, there is a technology named "Accumulator Charging Valve and Hydraulic Braking System" and the publication number is "CN113898619B", which discloses an accumulator charging valve, including a housing and a valve structure arranged in the housing, the housing including a pressure oil port, a load oil port, an oil return port, an accumulator connection port and a brake oil port, the valve structure including a pressure compensator, a cut-off valve, a one-way valve, a relief valve, a pilot control assembly and a brake valve, the pressure compensator is connected between the pressure oil port and the load oil port and the cut-off valve, the one-way valve is connected between the cut-off valve and the accumulator connection port, the pilot control assembly is connected between the accumulator connection port, the oil return port, the pressure compensator and the cut-off valve to control the pressure supplied to the pressure compensator control oil port and the cut-off valve control oil port, the relief valve is connected between the accumulator connection port and the oil return port, and the brake valve is connected between the accumulator connection port and the oil return port and the brake oil port. The pressure of the accumulator connection port can be controlled within a set range to ensure the safety of the use of the hydraulic brake. The present invention also provides a hydraulic brake system. However, this technology does not involve the technical problem and technical solution of the present application. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in view of the deficiencies in the prior art, a hydraulic brake accumulator structure with a simple structure is provided, which can effectively solve the problems of poor braking effect, long braking distance, short braking system life, etc. of the braking system of heavy vehicles during braking, improve the braking performance and safety of the vehicle, effectively reduce the braking distance, extend the life of the braking system, provide strong support for the driving safety of heavy vehicles, and improve the safety performance of the vehicle.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the utility model is:

[0006] The utility model discloses a hydraulic brake accumulator structure. A vent and an oil port are arranged on an outer shell, a tank body is arranged inside the outer shell, a piston assembly and a spring are arranged inside the tank body, one end of the spring is connected to one side of the piston assembly, the other side of the spring is connected to the outer shell with the oil port, and the other side of the piston assembly is connected to the vent.

[0007] The oil port is arranged at one end of the shell, and the vent is arranged at the other end of the shell.

[0008] A cooling port is arranged on the side of the shell, an intermediate cavity is arranged between the shell and the tank body, and the cooling port is connected to the intermediate cavity.

[0009] The piston assembly comprises a piston body and a U-shaped sealing ring.

[0010] A first O-ring is arranged at one end of the shell contacting the tank body, and a second O-ring is arranged at the other end of the shell contacting the tank body.

[0011] One side of the spring is welded to the piston assembly, and the other side of the spring is welded to the shell.

[0012] The shell comprises a shell and an end cover, and the shell and the end cover are connected by welding.

[0013] The shell side is provided with a shell bevel portion, and the end cover end is provided with an end cover bevel portion. When the shell and the end cover are welded, the shell bevel portion and the end cover bevel portion are fixedly connected by a weld.

[0014] The oil port is connected to the hydraulic oil pipeline of the brake system, and the air vent is connected to the gas supply pipeline.

[0015] The cooling port comprises a cooling liquid inlet and a cooling liquid outlet, the cooling liquid inlet is connected to a cooling liquid supply pipeline, and the cooling liquid outlet is connected to a cooling liquid return pipeline.

[0016] The technical solution of the utility model is adopted, and the working principle and beneficial effects are as follows:

[0017] The hydraulic brake accumulator structure described in the utility model, when the structure is set, is provided with a shell, a tank body, a piston assembly, and a spring. The shell is provided with an air vent and an oil port. The shell, the tank body, the piston assembly, and the spring are assembled, the tank body is fixedly provided in the shell, the piston assembly and the spring are movably mounted in the tank body, one end of the spring is connected to one side of the piston assembly, the other side of the spring is connected to the shell provided with the oil port, and the other side of the piston assembly is connected to the air vent. The accumulator structure is connected to the corresponding pipelines of the vehicle braking system through the air vent, the cooling port, and the oil port, respectively, to realize the supply of hydraulic oil, gas, and coolant. In this way, when the vehicle is driving normally, the vehicle braking system fills the tank body with hydraulic oil through the oil port, and the pressure of the hydraulic oil pushes the piston assembly in the tank body to be located near the air vent. When the vehicle needs to brake, the vehicle braking system passes gas through the vent, and the pressurized gas applies pressure to the piston assembly. When the gas pressure is greater than the hydraulic oil pressure, the piston assembly moves axially along the inner wall of the tank until the piston assembly moves to the outer shell position close to the oil port side, and contacts the step surface inside the outer shell to reach the limit state. At this time, the braking system is completely stopped. It is necessary to release the brake, control the gas supply, and the pressure applied by the gas to the piston assembly continues to decrease. The gas flows back from the vent, and the vehicle braking system releases hydraulic oil into the tank again, so that the piston moves axially in the opposite direction along the inner wall of the tank again. Under the action of the spring, the piston assembly can return to the initial position, that is, the piston assembly is located near the vent side. In this way, the braking system can conveniently and reliably control the accumulator, thereby ensuring the advantages of fast response speed of the accumulator structure, superior braking effect, and smooth braking process. It can also effectively reduce the braking distance, extend the life of the braking system, and improve the driving safety of heavy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a brief description of the contents and symbols in the drawings of this specification:

[0019] Figure 1 It is a cross-sectional structural schematic diagram of the hydraulic brake accumulator structure described in the utility model;

[0020] Figure 2 It is a structural schematic diagram of a piston assembly of the hydraulic brake accumulator structure described in the utility model;

[0021] The marks in the accompanying drawings are respectively: 1. end cover; 1-1. end cover inclined portion; 2-1. first O-ring; 2-2. second O-ring; 3. weld; 4. piston assembly; 4-1. piston body; 4-2. U-shaped sealing ring; 5. tank body; 6. shell; 6-1. shell inclined portion; 7. spring; 8. vent; 9. cooling port; 10. oil port; 11. shell; 12. intermediate cavity. DETAILED DESCRIPTION

[0022] The following is a detailed description of the embodiments of the present invention, such as the shapes, structures, positions and connection relationships of the components involved, the functions and working principles of the components, etc., by referring to the accompanying drawings:

[0023] As attached Figure 1 , Attachment Figure 2As shown, the utility model is a hydraulic brake accumulator structure, a vent 8 and an oil port 10 are arranged on a shell 11, a tank body 5 is arranged inside the shell 11, a piston assembly 4 and a spring 7 are arranged inside the tank body 5, one end of the spring 7 is connected to one side of the piston assembly 4, the other side of the spring 7 is connected to the shell 11 with the oil port 10, and the other side of the piston assembly 4 is connected to the vent 8. The above structure proposes an improved technical solution to the deficiencies in the prior art. When the structure is set, a shell 11, a tank body 5, a piston assembly 4, and a spring 7 are arranged, a vent 8 and an oil port 10 are arranged on the shell 11, the shell 11, the tank body 5, the piston assembly 4, and the spring 7 are assembled, the tank body 5 is fixedly arranged inside the shell 11, the piston assembly 4 and the spring 7 are movably mounted inside the tank body 5, one end of the spring 7 is connected to one side of the piston assembly 4, the other side of the spring 7 is connected to the shell 11 with the oil port 10, and the other side of the piston assembly 4 is connected to the vent 8. The accumulator structure is connected to the corresponding pipelines of the vehicle braking system through the vent 8, the cooling port 9, and the oil port 10, respectively, to realize the supply of hydraulic oil (oil), gas, and coolant. In this way, when the vehicle is running normally, the vehicle braking system fills the tank 5 with hydraulic oil through the oil port 10, and the pressure of the hydraulic oil pushes the piston assembly 4 in the tank to the side close to the vent. When the vehicle needs to brake, the vehicle braking system passes gas through the vent 8, and the pressurized gas applies pressure to the piston assembly 4. When the gas pressure is greater than the hydraulic oil pressure, the piston assembly moves axially along the inner wall of the tank 5 until the piston assembly moves to the outer shell position close to the oil port side, and contacts with the step surface inside the outer shell 6 to reach the limit state, at which time the braking system is completely stopped. It is necessary to release the brake, control the gas supply, and the pressure applied by the gas to the piston assembly continues to decrease. The gas flows back from the vent 8, and the vehicle braking system releases hydraulic oil to the tank 5 again, so that the piston moves axially in the opposite direction along the inner wall of the tank again. Under the action of the spring 7, the piston assembly can return to the initial position, that is, the piston assembly 4 is located near the vent. In this way, the braking system can conveniently and reliably control the accumulator, thereby ensuring the advantages of the accumulator structure, such as fast response speed, superior braking effect, and smooth braking process. It can also effectively reduce the braking distance, extend the life of the braking system, and improve the driving safety of heavy vehicles. The hydraulic brake accumulator structure described in the utility model has a simple structure and can effectively solve the problems of poor braking effect, long braking distance, and short life of the braking system in the braking process of heavy vehicles. It improves the braking performance and safety of the vehicle, effectively reduces the braking distance, and extends the life of the braking system. It provides strong support for the driving safety of heavy vehicles and improves the safety performance of the vehicle.

[0024] The oil port 10 is arranged at one end of the housing 11, and the vent 8 is arranged at the other end of the housing 11. The oil port 10 is connected to the hydraulic oil pipeline of the brake system, and the vent 8 is connected to the gas supply pipeline. In the above structure, the hydraulic oil pipeline of the brake system is used to supply hydraulic oil to the tank body through the oil port, and when the gas squeezes the piston assembly 4, the hydraulic oil flows back to the hydraulic oil pipeline of the brake system to achieve hydraulic oil braking. The vent 8 is used to supply gas to the tank body 5, thereby pushing the piston assembly 4 to move, and when the brake is released, the gas flows back to the gas supply pipeline.

[0025] A cooling port 9 is provided on the side of the shell 11, and an intermediate cavity 12 is provided between the shell 11 and the tank body 5, and the cooling port 9 is connected to the intermediate cavity 12. In the above structure, the cooling port 9 is connected to the coolant supply pipeline, and the cooling port is used to continuously release coolant to the intermediate cavity between the tank body 5 and the shell 6 in a circular manner, so as to cool the accumulator structure and reduce the high temperature generated during operation.

[0026] The piston assembly 4 includes a piston body 4-1 and a U-shaped sealing ring 4-2. In the above structure, a plurality of U-shaped sealing rings 4-2 can be provided, each of which is clamped in a mounting groove corresponding to the outer ring of the piston body 4-1, and the U-shaped sealing ring 4-2 protrudes from the outer ring of the piston body 4-1. The U-shaped sealing ring 4-2 reliably realizes the sealing between the piston body and the inner wall of the tank body.

[0027] The first O-ring 2-1 is disposed at one end of the housing 11 contacting the tank body 5, and the second O-ring 2-2 is disposed at the other end of the housing 11 contacting the tank body 5. With the above structure, the tank body 5 is reliably sealed by the first O-ring 2-1 and the second O-ring 2-2.

[0028] One side of the spring 7 is welded to the piston assembly 4, and the other side of the spring 7 is welded to the housing 11. In the above structure, both ends of the spring are fixedly connected to ensure reliable contraction action.

[0029] The shell 11 includes a shell 6 and an end cover 1, and the shell 6 and the end cover 1 are welded. The shell 6 is provided with a shell bevel 6-1 at the edge, and the end cover 1 is provided with an end cover bevel 1-1 at the end. When the shell 6 and the end cover 1 are welded, the shell bevel 6-1 and the end cover bevel 1-1 are fixedly connected by a weld 3. In the above structure, the shell 11 includes the shell 6 and the end cover 1, which is convenient for placing relevant components in the shell during assembly, and then the shell 6 and the end cover 1 are welded, and the connection is reliable.

[0030] The cooling port 9 includes a cooling liquid inlet and a cooling liquid outlet, wherein the cooling liquid inlet is connected to the cooling liquid supply pipeline, and the cooling liquid outlet is connected to the cooling liquid return pipeline. With the above structure, the cooling liquid circulates in the middle cavity, thereby continuously taking away heat and achieving reliable cooling.

[0031] The hydraulic brake accumulator structure described in the utility model is provided with a shell 11, a tank body 5, a piston assembly 4, and a spring 7. A vent 8 and an oil port 10 are provided on the shell 11. The shell 11, the tank body 5, the piston assembly 4, and the spring 7 are assembled. The tank body 5 is fixedly provided in the shell 11. The piston assembly 4 and the spring 7 are movably mounted in the tank body 5. One end of the spring 7 is connected to one side of the piston assembly 4, and the other side of the spring 7 is connected to the shell 11 provided with the oil port 10. The other side of the piston assembly 4 is connected to the vent 8. The accumulator structure is connected to the corresponding pipelines of the vehicle braking system through the vent 8, the cooling port 9, and the oil port 10, respectively, to realize the supply of hydraulic oil, gas, and coolant. During normal driving of the vehicle, the vehicle braking system fills the tank body 5 with hydraulic oil through the oil port 10, and the pressure of the hydraulic oil pushes the piston assembly 4 in the tank body to be located near the vent. When the vehicle needs to brake, the vehicle braking system passes gas through the vent 8, and the pressurized gas applies pressure to the piston assembly 4. When the gas pressure is greater than the hydraulic oil pressure, the piston assembly moves axially along the inner wall of the tank body 5 until the piston assembly moves to the outer shell position close to the oil port side, and contacts the step surface inside the outer shell 6 to reach the limit state. At this time, the braking system is completely stopped. It is necessary to release the brake, control the gas supply, and the pressure applied by the gas to the piston assembly continues to decrease. The gas flows back from the vent 8, and the vehicle braking system releases hydraulic oil to the inside of the tank body 5 again. The piston assembly 4 moves axially in the opposite direction along the inner wall of the tank again. Under the action of the spring 7, the piston assembly can return to the initial position, that is, the piston assembly 4 is located near the vent side. In this way, the braking system can conveniently and reliably control the accumulator, thereby ensuring the advantages of the accumulator structure with fast response speed, excellent braking effect, and smooth braking process. It also effectively reduces the braking distance, extends the life of the braking system, and improves the driving safety of the vehicle.

[0032] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A hydraulic brake accumulator structure, characterized in that: The housing (11) is provided with a vent (8) and an oil port (10), the housing (11) is provided with a tank body (5), the tank body (5) is provided with a piston assembly (4) and a spring (7), one end of the spring (7) is connected to one side of the piston assembly (4), the other side of the spring (7) is connected to the housing (11) provided with the oil port (10), and the other side of the piston assembly (4) is connected to the vent (8).

2. The hydraulic brake accumulator structure according to claim 1, characterized in that: The oil port (10) is arranged at one end of the housing (11), and the vent (8) is arranged at the other end of the housing (11).

3. The hydraulic brake accumulator structure according to claim 1 or 2, characterized in that: A cooling port (9) is arranged on the side of the outer shell (11), an intermediate cavity (12) is arranged between the outer shell (11) and the tank body (5), and the cooling port (9) is connected to the intermediate cavity (12).

4. The hydraulic brake accumulator structure according to claim 1, characterized in that: The piston assembly (4) comprises a piston body (4-1) and a U-shaped sealing ring (4-2).

5. The hydraulic brake accumulator structure according to claim 1 or 2, characterized in that: A first O-ring (2-1) is arranged at one end of the shell (11) contacting the tank body (5), and a second O-ring (2-2) is arranged at the other end of the shell (11) contacting the tank body (5).

6. The hydraulic brake accumulator structure according to claim 1 or 2, characterized in that: One side of the spring (7) is welded to the piston assembly (4), and the other side of the spring (7) is welded to the housing (11).

7. The hydraulic brake accumulator structure according to claim 1 or 2, characterized in that: The housing (11) comprises a shell (6) and an end cover (1), and the shell (6) and the end cover (1) are welded together.

8. The hydraulic brake accumulator structure according to claim 7, characterized in that: The shell (6) is provided with a shell bevel portion (6-1) at the edge, and the end cover (1) is provided with an end cover bevel portion (1-1) at the end. When the shell (6) and the end cover (1) are welded together, the shell bevel portion (6-1) and the end cover bevel portion (1-1) are fixedly connected via a weld (3).

9. The hydraulic brake accumulator structure according to claim 1 or 2, characterized in that: The oil port (10) is connected to the hydraulic oil pipeline of the brake system, and the air vent (8) is connected to the gas supply pipeline.

10. The hydraulic brake accumulator structure according to claim 3, characterized in that: The cooling port (9) comprises a cooling liquid inlet and a cooling liquid outlet, the cooling liquid inlet is connected to a cooling liquid supply pipeline, and the cooling liquid outlet is connected to a cooling liquid return pipeline.

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