Composite brake valve

Abstract

The utility model relates to the technical field of brake valves, and provides a composite brake valve which comprises a valve body and a brake mechanism. By arranging the pressure reducing cylinder, the limiting plate and the pressure reducing piston, when the pressure borne by the oil storage cavity is too large, hydraulic oil flows to the pressure reducing cylinder and pushes the pressure reducing piston to move rightwards, the spring is arranged and provides rightward force for the pressure reducing piston, and the pressure reducing piston can be prevented from moving leftwards under normal pressure; after the inductive probe is separated from the pressure reduction piston, a signal is transmitted to the control module to control the telescopic rod to work, and through the arrangement of the telescopic rod, after the pressure reduction piston moves leftwards, the telescopic rod extends to push the pressure reduction piston back, and meanwhile pressure in the oil storage cavity is slowly increased, so that comfort is improved; by arranging the refrigerator, the flow dividing pipe and the cooling pipe, after the temperature of the valve body rises, the refrigerator works, refrigerant liquid enters the cooling pipe through the flow dividing pipe, the valve body and hydraulic oil in the valve body are cooled, and the working stability of the brake valve is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of brake valves, in particular to a compound brake valve. Background Technique

[0002] The compound brake valve, as a core component in the automotive service braking system, shoulders the major responsibility of ensuring the safe driving of vehicles. It is a key control device in the braking system, responsible for regulating and distributing braking force, ensuring that the vehicle can brake smoothly and effectively at critical moments. The compound brake valve integrates multiple braking functions. Through precise design and advanced technology, it realizes precise control of braking, not only ensuring the safety of parking but also providing solid technical support for smooth braking during driving. In short, the compound brake valve is the guardian of the safe driving of vehicles, and its normal operation is directly related to the safety and comfort of every journey.

[0003] According to the search, the Chinese utility model publication number: CN210830692U discloses a brake valve. Compared with the prior art, the utility model realizes the adjustment of the opening efficiency of the valve body by setting two pistons with different sizes and areas. When strong braking is required, the valve body is pushed to open by the piston with a large area, and when medium braking is required, the valve body is pushed to open by the piston with a small area. The switching of the above states can be achieved only by connecting the air pressure pipe from the brake pedal master cylinder to the control ports on different driving chambers. The operation is simple and convenient to use, meeting diverse needs and facilitating the adjustment of the braking state.

[0004] However, when implementing the above technical solutions, there are some problems that need to be considered: First, when the braking force applied by the brake valve is too large in an emergency, it cannot slowly increase the braking force, which will reduce the comfort of the vehicle during braking and even cause the tires to lock due to excessive braking force, resulting in danger. Second, the brake valve will generate high temperature after long-term operation, affecting the braking effect. Content of the Utility Model

[0005] The purpose of the content of the utility model is to provide a compound brake valve to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A compound brake valve, including a valve body and a braking mechanism. A control module is arranged on the right side of the valve body, a braking mechanism is arranged above the control module, an oil storage cavity is arranged inside the valve body, a refrigerator is arranged on the right side of the oil storage cavity, and a pressure reducing cylinder is arranged on the left side of the oil storage cavity.

[0007] Preferably, a driving piston is arranged above the oil storage cavity, a driven piston is arranged below the oil storage cavity, and the driving piston and the driven piston are slidably connected to the valve body.

[0008] Preferably, a sealing ring is sleeved outside the active piston and the driven piston. The sealing ring is in close fit with the active piston and the driven piston, and the sealing ring is fixedly connected to the valve body.

[0009] Preferably, the cooler is connected to one end of the shunt pipe, and a cooling pipe is connected to the left side of the shunt pipe. The cooling pipe is conveniently located on the inner wall of the valve body.

[0010] Preferably, a limiting plate is arranged inside the pressure reducing cylinder. A pressure reducing piston is slidably connected inside the limiting plate, and the pressure reducing piston is in close fit with the pressure reducing cylinder.

[0011] Preferably, one end of the left side of the pressure reducing piston is connected to a spring, and the other end of the spring is connected to the pressure reducing cylinder.

[0012] Preferably, a telescopic rod is arranged inside the spring. The telescopic rod is fixedly connected to the pressure reducing cylinder, the telescopic rod is electrically connected to the control module, and the telescopic rod corresponds to the position of the pressure reducing piston.

[0013] Preferably, an induction probe is arranged on the left side of the limiting plate. When not working, the induction probe is in contact with the pressure reducing piston, and the induction probe is electrically connected to the control module.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] By arranging a pressure reducing cylinder, a limiting plate and a pressure reducing piston in the present utility model, when the pressure in the oil storage cavity is too high, the hydraulic oil flows into the pressure reducing cylinder and pushes the pressure reducing piston to move to the right. By arranging a spring, the spring provides a force to the right for the pressure reducing piston, which can prevent the pressure reducing piston from moving to the left under normal pressure. By arranging an induction probe, after the induction probe is separated from the pressure reducing piston, it transmits a signal to the control module to control the telescopic rod to work. By arranging a telescopic rod, after the pressure reducing piston moves to the left, the telescopic rod extends and pushes the pressure reducing piston back, and at the same time, slowly increases the pressure in the oil storage cavity to improve comfort;

[0016] By arranging a cooler, a shunt pipe and a cooling pipe in the present utility model, after the valve body heats up, the cooler works, and the refrigerant liquid enters the cooling pipe through the shunt pipe to cool the valve body and the internal hydraulic oil, maintaining the stability of the brake valve operation and avoiding the decline of the braking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the external structure of the present utility model.

[0018] Figure 2 It is a schematic diagram of the internal structure of the valve body of the present utility model.

[0019] Figure 3Schematic diagram of the cooperation among the cooler, the shunt pipe and the cooling pipe of the present utility model.

[0020] Figure 4 Schematic diagram of the internal structure of the pressure reducing cylinder of the present utility model.

[0021] In the figure: 1, valve body; 2, control module; 3, braking mechanism; 301, oil storage cavity; 302, active piston; 303, driven piston; 304, sealing ring; 305, cooler; 306, shunt pipe; 307, cooling pipe; 308, pressure reducing cylinder; 309, limiting plate; 310, pressure reducing piston; 311, spring; 312, telescopic rod; 313, induction probe. Specific embodiments

[0022] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-4, An embodiment provided by the present utility model: A combined brake valve, including a valve body 1 and a braking mechanism 3. A control module 2 is arranged on the right side of the valve body 1, and a braking mechanism 3 is arranged above the control module 2. An oil storage cavity 301 is arranged inside the valve body 1. A cooler 305 is arranged on the right side of the oil storage cavity 301, and a pressure reducing cylinder 308 is arranged on the left side of the oil storage cavity 301.

[0027] Specifically, a main piston 302 is arranged above the oil storage cavity 301, and a driven piston 303 is arranged below the oil storage cavity 301. The main piston 302 and the driven piston 303 are slidably connected to the valve body 1. When the main piston 302 presses down, the hydraulic oil in the oil storage cavity 301 remains unchanged, and the driven piston 303 is synchronously pressed down.

[0028] Specifically, sealing rings 304 are sleeved outside the main piston 302 and the driven piston 303. The sealing rings 304 are closely attached to the main piston 302 and the driven piston 303. The sealing rings 304 are fixedly connected to the valve body 1. The sealing rings 304 maintain the sealing performance of the valve body 1 and prevent hydraulic oil leakage.

[0029] Specifically, the cooler 305 is connected to one end of a shunt pipe 306. A cooling pipe 307 is connected to the left side of the shunt pipe 306. The cooling pipe 307 is conveniently arranged on the inner wall of the valve body 1. After the valve body 1 heats up, the cooler 305 works, and the refrigerant liquid enters the cooling pipe 307 through the shunt pipe 306 to cool down the valve body 1 and the internal hydraulic oil, maintaining the stability of the brake valve operation and avoiding the decline of the braking effect.

[0030] Specifically, a limiting plate 309 is arranged inside the pressure reducing cylinder 308. A pressure reducing piston 310 is slidably connected inside the limiting plate 309. The pressure reducing piston 310 is closely attached to the pressure reducing cylinder 308. When the pressure on the oil storage cavity 301 is too high, the hydraulic oil flows to the pressure reducing cylinder 308, pushing the pressure reducing piston 310 to move to the right.

[0031] Specifically, one end of a spring 311 is connected to the left side of the pressure reducing piston 310, and the other end of the spring 311 is connected to the pressure reducing cylinder 308. The spring 311 provides a force to the right for the pressure reducing piston 310, which can prevent the pressure reducing piston 310 from moving to the left under normal pressure.

[0032] Specifically, a telescopic rod 312 is arranged inside the spring 311. The telescopic rod 312 is fixedly connected to the pressure reducing cylinder 308. The telescopic rod 312 is electrically connected to the control module 2. The telescopic rod 312 corresponds to the position of the pressure reducing piston 310. After the pressure reducing piston 310 moves to the left, the telescopic rod 312 extends, pushing the pressure reducing piston 310 back, and at the same time slowly increasing the pressure in the oil storage cavity 301 to improve comfort.

[0033] Specifically, an induction probe 313 is provided on the left side of the limit plate 309. When not working, the induction probe 313 is in contact with the pressure reducing piston 310. The induction probe 313 is electrically connected to the control module 2. After the induction probe 313 is separated from the pressure reducing piston 310, it transmits a signal to the control module 2 to control the operation of the telescopic rod 312.

[0034] Working principle: First, when the active piston 302 presses down, the hydraulic oil in the oil storage chamber 301 remains unchanged, and the driven piston 303 is synchronously pressed down. The spring 311 provides a force to the right for the pressure reducing piston 310, which can prevent the pressure reducing piston 310 from moving to the left under normal pressure. When the pressure on the oil storage chamber 301 is too high, the hydraulic oil flows into the pressure reducing cylinder 308, pushing the pressure reducing piston 310 to move to the right. Then, after the induction probe 313 is separated from the pressure reducing piston 310, it transmits a signal to the control module 2 to control the operation of the telescopic rod 312. The telescopic rod 312 extends, pushing the pressure reducing piston 310 back, and at the same time slowly increasing the pressure in the oil storage chamber 301 to improve comfort. After the valve body 1 heats up, the cooler 305 works, and the refrigerant liquid enters the cooling pipe 307 through the shunt pipe 306 to cool the valve body 1 and the internal hydraulic oil, maintaining the stability of the brake valve operation and avoiding a decrease in the braking effect.

[0035] The above are only embodiments of the present invention, and common knowledge such as specific structures and characteristics known in the solution is not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A composite brake valve, comprising a valve body (1) and a brake mechanism (3), characterized in that: A control module (2) is arranged on the right side of the valve body (1), a brake mechanism (3) is arranged above the control module (2), an oil storage chamber (301) is arranged inside the valve body (1), a refrigerator (305) is arranged on the right side of the oil storage chamber (301), and a pressure reducing cylinder (308) is arranged on the left side of the oil storage chamber (301).

2. A composite brake valve according to claim 1, characterized in that: An active piston (302) is arranged above the oil storage chamber (301), and a driven piston (303) is arranged below the oil storage chamber (301). The active piston (302) and the driven piston (303) are slidably connected to the valve body (1).

3. A composite brake valve according to claim 2, characterized in that: The outer sides of the active piston (302) and the driven piston (303) are sleeved with sealing rings (304), the sealing rings (304) are tightly fitted with the active piston (302) and the driven piston (303), and the sealing rings (304) and the valve body (1) are fixedly connected.

4. A composite brake valve according to claim 1, characterized in that: The refrigerator (305) is connected to one end of a shunt pipe (306), and a cooling pipe (307) is connected to the left side of the shunt pipe (306). The cooling pipe (307) is conveniently located on the inner wall of the valve body (1).

5. A composite brake valve according to claim 1, characterized in that: A limiting plate (309) is disposed inside the decompression cylinder (308), and a decompression piston (310) is slidably connected inside the limiting plate (309), and the decompression piston (310) is tightly fitted to the decompression cylinder (308).

6. A composite brake valve according to claim 5, characterized in that: The left side of the decompression piston (310) is connected to a spring (311) at one end, and the other end of the spring (311) is connected to the decompression cylinder (308).

7. A composite brake valve according to claim 6, characterized in that: A telescopic rod (312) is provided on the inner side of the spring (311); the telescopic rod (312) is fixedly connected to the decompression cylinder (308); the telescopic rod (312) is electrically connected to the control module (2); and the telescopic rod (312) corresponds to the position of the decompression piston (310).

8. A composite brake valve according to claim 5, characterized in that: A sensing probe (313) is provided on the left side of the limiting plate (309); the sensing probe (313) is in contact with the pressure reducing piston (310) when not in operation; and the sensing probe (313) is electrically connected to the control module (2).

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