A platform car brake control valve group

Abstract

The utility model discloses a platform car brake control valve group, including the valve block, the pipeline system of integration in valve block and install valve piece subassembly of valve block, valve piece subassembly includes electromagnetic reversing valve, check valve and pressure reducing valve, the pipeline system is provided with energy storage ware interface and pressure measuring connector, electromagnetic reversing valve is equipped with the manual knob control mechanism parallel to its electric control unit.

Description

Technical Field

[0001] This utility model relates to the field of brake valve assembly, and more particularly to a platform vehicle brake control valve assembly. Background Technology

[0002] In vehicle braking systems, the brake valve assembly, as a core component of hydraulic control, directly affects braking performance and driving safety. Traditional brake valve assemblies typically employ a split valve layout, connecting components such as solenoid valves and check valves via external pipelines. This results in issues such as loose structure, large space occupation, and susceptibility to leakage. Especially in complex operating conditions such as construction machinery and commercial vehicles, existing technologies reveal the following shortcomings: most electronically controlled brake valve assemblies rely on a single solenoid valve for on / off control. When circuit failure or solenoid valve malfunction occurs, there is a lack of emergency operation mechanisms, posing a risk of brake failure. Utility Model Content

[0003] This invention addresses the shortcomings of existing electromagnetic valves, which offer only one control method, by providing a platform vehicle brake control valve assembly.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a platform vehicle brake control valve assembly, comprising a valve block, a pipeline system integrated within the valve block, and a valve component assembly installed on the valve block; the valve component assembly includes an electromagnetic reversing valve, a check valve, and a pressure reducing valve; the pipeline system is equipped with an accumulator interface and a pressure testing connector; the electromagnetic reversing valve is provided with a manual knob control mechanism connected in parallel with its electronic control unit.

[0005] By adopting the above technical solution, and by integrating electromagnetic reversing valves, check valves, pressure reducing valves, and parallel manual control mechanisms, mechanical emergency operation can be achieved in case of electronic control failure, thereby improving the reliability of the braking system. At the same time, the modular design optimizes the spatial layout.

[0006] The present invention is further configured such that: the manual knob control mechanism includes a rotary operating part and a mechanical transmission assembly, and the rotary operating part is connected to the valve core of the electromagnetic reversing valve through the mechanical transmission assembly.

[0007] By adopting the above technical solution and using a combination of rotary operation and mechanical transmission control, the original function of the solenoid valve is retained, and the valve core displacement is precisely adjusted in the absence of power, ensuring the response accuracy of emergency braking operation.

[0008] The present invention is further configured such that the manual knob control mechanism is provided with a safety device to prevent accidental touch, including a knob press-to-unlock structure and a rotation angle limiting structure.

[0009] By adopting the above technical solution, the dual safety locking mechanism prevents the knob position from shifting due to vehicle vibration or accidental contact, ensuring the stability of the solenoid valve's working state while improving the safety of human-machine interaction.

[0010] The present invention is further configured such that the electromagnetic directional valve and the check valve are arranged in series in the pipeline system to form a redundant control channel.

[0011] By adopting the above technical solution, a dual flow control barrier is formed by arranging the solenoid valve and the check valve in series, which prevents pressure leakage caused by the failure of a single valve and improves the safety redundancy of the hydraulic circuit.

[0012] The present invention is further configured such that: the one-way valve adopts a cone valve structure or a ball valve structure, and its opening pressure direction is consistent with the brake fluid flow direction.

[0013] By adopting the above technical solutions, the preferred scheme of the cone valve / ball valve structure can shorten the brake fluid backflow blocking time and improve the brake pressure holding capability while ensuring one-way sealing performance.

[0014] The present invention is further configured such that: the pressure reducing valve is located in the pipeline section between the electromagnetic reversing valve and the accumulator interface, and its adjustment direction is opposite to the braking pressure transmission direction.

[0015] By adopting the above technical solution, the reverse adjustment arrangement of the pressure reducing valve can dynamically offset the impact of accumulator pressure fluctuations on the braking actuator, maintain the linear output characteristics of braking pressure, and avoid sudden changes in brake pedal force.

[0016] The present invention is further configured such that: the pressure testing connector is arranged at the detection point between the outlet end of the pressure reducing valve and the accumulator interface, and its interface axis forms a non-orthogonal angle with the pipeline system.

[0017] By adopting the above technical solution, the inclined arrangement design of the pressure testing interface not only meets the spatial operation requirements of the testing tool, but also reduces the risk of stress concentration caused by vertical connection and extends the service life of the seal.

[0018] The present invention is further configured such that: the pressure testing connector adopts a detachable sealed connection structure, and its testing port is equipped with a dustproof protective cover.

[0019] By adopting the above technical solution, the detachable sealing structure combined with the dust cover design enables rapid inspection and maintenance of the pressure detection interface, while preventing contaminants from entering the hydraulic system and causing valve jamming.

[0020] The present invention is further configured such that: the valve block has an interconnected stepped oil passage structure, including a main oil passage, branch oil passages and a buffer cavity, and the junctions of each oil passage adopt a rounded transition structure.

[0021] By adopting the above technical solution, the stepped oil passage combined with the arc transition structure effectively reduces the turbulence of high-speed fluid inside the valve block, reduces hydraulic shock noise, and improves energy transfer efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a platform vehicle brake control valve assembly.

[0023] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Valve block; 2. Solenoid directional valve; 3. Check valve; 4. Pressure reducing valve; 5. Accumulator interface; 6. Pressure testing connector; 7. Manual knob control mechanism. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0025] Example: A platform vehicle brake control valve assembly, such as Figure 1As shown, the valve block 1 is made of cast aluminum alloy and integrates a stepped oil passage structure. This oil passage consists of a main oil passage, branch oil passages, and a buffer chamber. The junctions of the oil passages adopt an R3 arc transition structure to avoid turbulent flow. Valve components are installed on the valve block 1, including an electromagnetic directional valve 2, a cone-type check valve 3, and a pressure reducing valve 4. The electromagnetic directional valve 2 and the check valve 3 are arranged in series through a pipeline system to form a redundant control channel, ensuring that the braking function can still be maintained when a single valve fails. The valve core of the electromagnetic directional valve 2 is connected to a manual knob control mechanism 7 through a mechanical transmission assembly. The manual knob control mechanism 7 includes a rotary operating part (a knob with anti-slip texture) and a gear-rack transmission assembly. When the knob is rotated, the valve core is driven to move axially through the gear and rack to realize the manual switching function. The mechanism is also equipped with a safety device to prevent accidental contact, including a knob press-to-unlock structure and a rotation angle limit structure. The knob press-to-unlock structure requires pressing the knob first to compress the spring. Only with proper rotation can the operation be performed. The rotation angle limiting structure features a limiting pin inside the knob that engages with an arc-shaped limiting groove, limiting the rotation angle to ±° to prevent over-adjustment. The piping system is equipped with an accumulator interface 5 and a pressure testing connector 6. The pressure reducing valve 4 is located in the piping section between the solenoid reversing valve 2 and the accumulator interface 5. Its adjustment direction is opposite to the brake pressure transmission direction, and stable pressure output is achieved through a reverse spring preload. The pressure testing connector 6 is located at the detection point between the outlet end of the pressure reducing valve 4 and the accumulator interface 5. Its interface axis forms a 45° non-orthogonal angle with the piping system, facilitating the installation of testing tools. The pressure testing connector 6 uses a threaded, detachable sealing structure and is equipped with a rubber dust cover to prevent foreign object intrusion. The one-way valve 3 uses a cone valve structure, and its opening pressure direction is consistent with the brake fluid flow direction, ensuring that the brake fluid can only flow unidirectionally to the accumulator interface 5. The internal oil passages of the valve block 1 achieve graded flow control through a stepped design, and the buffer chamber effectively reduces hydraulic shock. In electronic control mode, the solenoid directional valve 2 receives ECU signals to switch the oil circuit; in manual mode, pressing and rotating the manual knob directly drives the valve core through the mechanical transmission component. In the redundant channel, if the solenoid directional valve 2 fails, the check valve 3 can still maintain the basic braking function. The pressure test connector 6 achieves pressure detection in a compact space through a non-orthogonal layout.

Claims

1. A platform vehicle brake control valve assembly, characterized in that, The system includes a valve block (1), a piping system integrated within the valve block (1), and valve components installed on the valve block (1); the valve components include a solenoid directional valve (2), a check valve (3), and a pressure reducing valve (4); the piping system is equipped with an accumulator interface (5) and a pressure testing connector (6); the solenoid directional valve (2) is provided with a manual knob control mechanism (7) connected in parallel with its electronic control unit.

2. The platform vehicle brake control valve assembly according to claim 1, characterized in that, The manual knob control mechanism (7) includes a rotary operating part and a mechanical transmission assembly. The rotary operating part is connected to the valve core of the electromagnetic reversing valve (2) through the mechanical transmission assembly.

3. The platform vehicle brake control valve assembly according to claim 2, characterized in that, The manual knob control mechanism (7) is equipped with a safety device to prevent accidental touch, including a knob press-to-unlock structure and a rotation angle limiting structure.

4. The platform vehicle brake control valve assembly according to claim 1, characterized in that, The electromagnetic directional valve (2) and the check valve (3) are arranged in series in the pipeline system to form a redundant control channel.

5. A platform vehicle brake control valve assembly according to claim 4, characterized in that, The one-way valve (3) adopts a cone valve structure or a ball valve structure, and its opening pressure direction is consistent with the brake fluid flow direction.

6. A platform vehicle brake control valve assembly according to claim 1, characterized in that, The pressure reducing valve (4) is located in the pipeline section between the electromagnetic reversing valve (2) and the accumulator interface (5), and its adjustment direction is opposite to the braking pressure transmission direction.

7. A platform vehicle brake control valve assembly according to claim 1, characterized in that, The pressure testing connector (6) is located at the detection point between the outlet end of the pressure reducing valve (4) and the accumulator interface (5), and its interface axis forms a non-orthogonal angle with the pipeline system.

8. A platform vehicle brake control valve assembly according to claim 7, characterized in that, The pressure testing connector (6) adopts a detachable sealed connection structure, and its testing port is equipped with a dustproof protective cover.

9. A platform vehicle brake control valve assembly according to claim 1, characterized in that, The valve block (1) has an interconnected stepped oil passage structure inside, including a main oil passage, branch oil passages and a buffer cavity, and the junctions of each oil passage adopt a rounded transition structure.

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