Brake hydraulic station device

Abstract

The utility model discloses a kind of brake hydraulic station devices, device includes oil tank, oil pump, overflow valve, energy accumulator, electromagnetic reversing valve and hydraulic brake cylinder, wherein, through double electromagnetic reversing valve parallel design, redundancy design can avoid the hydraulic brake cylinder malfunction caused by electromagnetic reversing valve failure, energy accumulator can be when hydraulic brake cylinder does not carry out action, advance storage hydraulic oil, to reduce the power of oil pump selection, electromagnetic reversing valve can also be quickly driven hydraulic brake cylinder action when commutation, oil pump uses small power to reduce overflow quantity to reduce hydraulic oil temperature rise. This kind of brake hydraulic station device adopts quick-change type connecting structure, improve the convenience of maintenance, in guaranteeing quickly driven hydraulic brake cylinder action, reduce brake distance, improve equipment safety performance while optimizing oil tank structure improves heat exchange efficiency.

Description

Technical Field

[0001] The embodiments of this utility model belong to the field of hydraulic control technology, and more specifically, relate to a brake hydraulic station device. Background Technology

[0002] Brake hydraulic stations are core braking power units in fields such as engineering machinery, heavy vehicles, and rail transportation. Their main function is to convert mechanical energy into hydraulic energy and transmit pressure to the brake actuator through hydraulic oil to achieve deceleration or stopping of the equipment. In heavy-load or high-frequency braking scenarios such as mining machinery, port cranes, and large trucks, the reliability of brake hydraulic stations directly determines the safety of equipment operation. Once a failure occurs, it may lead to serious safety accidents. Therefore, there are extremely high requirements for their stability, response speed, and durability.

[0003] Current mainstream brake hydraulic power units typically consist of an oil tank, a hydraulic pump unit, a relief valve, an accumulator, a pressure sensor, and a piping system. Their working principle is as follows: the hydraulic pump unit draws oil from the tank and pressurizes it to form a stable hydraulic source; the relief valve limits the system's maximum pressure to prevent overload; the accumulator stores hydraulic energy and can quickly replenish pressure when the hydraulic pump is briefly stopped or when braking demand surges, preventing sudden pressure drops that could lead to brake failure; and the pressure sensor monitors the system pressure in real time to ensure that the pressure remains within the set range.

[0004] However, existing brake hydraulic station devices still have three major drawbacks in practical applications. First, insufficient heat dissipation performance: the hydraulic pump unit generates a large amount of heat during long-term operation, leading to a decrease in hydraulic oil viscosity, accelerated aging of seals, and a shortened service life of the device. Second, poor pressure stability: when the equipment performs continuous and frequent braking, the accumulator's pressure replenishment rate is difficult to match the pressure consumption rate, easily causing pressure fluctuations, resulting in uneven braking force and affecting the consistency of braking effect. Third, low maintenance convenience: the core components of existing devices are mostly integrated and fixedly installed, requiring the disassembly of a large number of pipes and connectors, resulting in long maintenance time, and the pipe interfaces are prone to leakage risks due to repeated disassembly and assembly. Summary of the Invention

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides a hydraulic brake station device. By employing a parallel design of dual electromagnetic directional valves, malfunctions of the hydraulic brake cylinder due to electromagnetic directional valve failure are avoided. An accumulator is used to ensure rapid actuation of the hydraulic brake cylinder even when the electromagnetic directional valves are switching. Simultaneously, the accumulator can store hydraulic oil in advance when the hydraulic brake cylinder is not in operation, reducing the power required for the oil pump. Through the combined use of a low-power oil pump and the accumulator, rapid actuation of the hydraulic brake cylinder is achieved, reducing braking distance and improving equipment safety performance.

[0006] To achieve the above objectives, this utility model provides a brake hydraulic station device, comprising: A separate oil tank, an oil pump connected to the oil outlet of the oil tank, and an overflow valve connected to the oil outlet of the oil pump; An accumulator connected after the overflow valve pipeline and an electromagnetic directional valve connected to the accumulator; the electromagnetic directional valve is connected to the pipeline in parallel.

[0007] Furthermore, the oil tank adopts a split structure design, which is divided into a heat dissipation area and a working area, with the heat dissipation area connected to external heat sinks.

[0008] Furthermore, the heat sink is made of aluminum alloy with high thermal conductivity, with a thickness controlled at 1.5-2mm and a spacing of 5-8mm.

[0009] Furthermore, the accumulator can store hydraulic oil.

[0010] Furthermore, it also includes a hydraulic brake cylinder, hydraulic pipeline, and pipeline interface connected to the electromagnetic directional valve.

[0011] Furthermore, the hydraulic pipeline uses a large-diameter, low-friction coefficient high-pressure hose.

[0012] Furthermore, the pipeline interface uses a high-pressure quick-connect coupling.

[0013] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects: 1. The device of this utility model, by adopting a parallel design of dual electromagnetic directional valves, avoids the malfunction of the hydraulic brake cylinder caused by the failure of the electromagnetic directional valve. By using an accumulator, the hydraulic brake cylinder can be quickly driven to act even when the electromagnetic directional valve is switching. At the same time, the accumulator can also store hydraulic oil in advance when the hydraulic brake cylinder is not acting, so as to reduce the power of the oil pump. By using a low-power oil pump and an accumulator in combination, the hydraulic brake cylinder can be quickly driven to act, the braking distance can be reduced, and the safety performance of the equipment can be improved.

[0014] 2. The device of this utility model optimizes the oil tank structure and improves heat exchange efficiency by using a separate oil tank design and adding heat sinks. By using high-pressure hoses and high-pressure quick-connect couplings, the pressure stability and maintenance convenience of the brake hydraulic station device are improved. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the hydraulic system of a brake hydraulic station device according to an embodiment of the present invention; Figure 2 This is a flow chart of the hydraulic system of a brake hydraulic station device according to an embodiment of the present invention.

[0016] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-oil tank, 2-oil pump, 3-relief valve, 4-accumulator, 5-solenoid directional valve, 6-hydraulic brake cylinder. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0018] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0020] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0021] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] This novel embodiment provides a brake hydraulic station device, such as... Figure 1As shown, the device includes an oil tank 1, an oil pump 2, an overflow valve 3, an accumulator 4, hydraulic pipelines, pipeline interfaces, a solenoid directional valve 5, and a hydraulic brake cylinder 6. The oil tank 1 is connected to the oil pump 2, and the outlet of the oil pump 2 is connected to the inlet of the overflow valve 3. The outlet of the overflow valve 3 and the return oil are respectively connected to the two inlets of the solenoid directional valve 5, and the overflow port of the overflow valve 3 is connected to the return oil. The upper and lower chambers of the hydraulic brake cylinder 6 are respectively connected to the two outlets of the solenoid directional valve 5. When the device is working, the oil pump 2 pumps the hydraulic oil in the oil tank 1 into the accumulator 4 and the hydraulic brake cylinder 6 after passing through the overflow valve 3. When the oil pressure in the accumulator 4 reaches the set value, the overflow valve 3 overflows and returns the oil. When the solenoid directional valve 5 switches, the hydraulic oil stored in the accumulator 4 drives the hydraulic brake cylinder 6 to move. At the same time, the oil pump 2 continues to replenish the oil to the accumulator 4. The oil pump 2 can be a low-power oil pump to reduce the overflow flow, thereby reducing the temperature rise of the hydraulic oil. The device of this invention, by adopting a parallel design of dual electromagnetic directional valves, avoids malfunctions of the hydraulic brake cylinder caused by electromagnetic directional valve failure. By using an accumulator, the hydraulic brake cylinder can be quickly driven even when the electromagnetic directional valve is switching. At the same time, the accumulator can store hydraulic oil in advance when the hydraulic brake cylinder is not in action, thereby reducing the power required for the oil pump. Through the combined use of a low-power oil pump and an accumulator, the hydraulic brake cylinder can be quickly driven, reducing the braking distance and improving the safety performance of the equipment.

[0023] Specifically, in the brake hydraulic station device, passive cooling is used to enhance the heat dissipation of the device. Passive cooling requires no additional power and does not require much modification to the device. The core is to improve heat exchange efficiency by optimizing the tank structure. The tank 1 adopts a split structure design, dividing the tank 1 into a heat dissipation area and a working area. The heat dissipation area is connected to the working area through pipelines, and heat dissipation fins are separately installed on the outer wall of the heat dissipation area, which can reduce the impact of oil disturbance in the working area on the heat dissipation effect. The heat dissipation fins are made of aluminum alloy with high thermal conductivity, with a thickness controlled at 1.5-2mm and a spacing of 5-8mm, to accelerate the transfer of heat to the air. In addition, in the working area of ​​the tank 1, the internal flow channel of the tank 1 needs to be optimized to avoid local oil stagnation and overheating, and to maximize the contact area between the flow channel and the heat dissipation fins in the heat dissipation area.

[0024] like Figure 2As shown, oil tank 1 provides hydraulic oil to the system, and oil pump 2 draws oil from oil tank 1 and pressurizes it to form a pressure oil source; overflow valve 3 regulates the system pressure. When the pressure exceeds the set value, the oil flows back to oil tank 1 through the "overflow" pipeline to achieve pressure stabilization and overload protection; accumulator 4 is connected to the system pipeline and is used to store hydraulic energy, which can supplement pressure or absorb pressure shocks during braking; the control system sends electrical signals to two solenoid directional valves 5, which change the direction of the oil circuit by switching the valve core position, thereby controlling the hydraulic oil to enter different chambers of the hydraulic brake cylinder 6, so that the hydraulic brake cylinder drives the actuator to complete the action of "brake execution" (brake clamping) or "brake release" (brake disengagement), and finally achieves precise control of the braking state.

[0025] As a preferred option, in some other embodiments, in the brake hydraulic station device, the hydraulic pipeline uses a large-diameter, low-friction coefficient high-pressure hose (steel wire braided hose with an inner diameter of 16mm or more) to replace the traditional small-diameter rigid pipe, reducing pressure loss along the pipeline and avoiding pipeline bends, thus reducing local pressure loss. Through the high-pressure hose and the pipeline design with fewer bends, the pressure stability of the brake hydraulic station device is improved. At the same time, the pipeline interface adopts a high-pressure quick-connect coupling with a built-in self-sealing valve core, so there is no need to drain the oil when plugging and unplugging, avoiding oil leakage and contamination. The component fixing method is changed to "clamp + hand-tightening bolt", which can be fixed or disassembled by hand without special tools.

[0026] In another embodiment of this utility model, a brake hydraulic station device is provided, comprising the following steps: Check that the quick-connect couplings of the component interfaces are properly sealed, that the clips and hand-tightened bolts are tightened, that there are no signs of mismatch in irregular interfaces, and confirm that the accumulator 4 shut-off valve is in the closed state.

[0027] When the power supply to the oil pump 2 motor is closed, the oil pump 2 draws oil from the oil tank 1 and pressurizes it. After the oil pump 2 is started, the hydraulic oil is drawn from the oil tank 1 and enters the system through the inlet of the overflow valve 3.

[0028] Accumulator 4 continuously absorbs hydraulic oil. When the internal pressure reaches the preset value, overflow valve 3 automatically opens the overflow port to return excess hydraulic oil to oil tank 1, forming a closed-loop pressure balance.

[0029] When the screw press triggers an emergency braking signal, the control unit immediately activates the solenoid directional valve 5 to switch to the working position. The high-pressure hydraulic oil stored in the accumulator 4 is quickly directed through its outlet to the upper chamber of the hydraulic brake cylinder 6, driving the brake cylinder piston to extend rapidly and causing the brake pads to clamp the flywheel.

[0030] First, complete the reset of all braking actions, return all handles of the control unit to their original positions, then turn off the oil pump 2 motor, open the accumulator 4 shut-off valve to release pressure, and after the pressure gauge shows 0MPa, turn off the power to the electrical control cabinet.

[0031] In summary, this brake hydraulic station device adopts a quick-change connection structure, which improves the convenience of maintenance. While ensuring rapid driving of the hydraulic brake cylinder, reducing braking distance, and improving equipment safety performance, it also optimizes the oil tank structure to improve heat exchange efficiency.

[0032] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A brake hydraulic station device, characterized in that, include: A separate oil tank (1), an oil pump (2) connected to the oil outlet of the oil tank (1), and an overflow valve (3) connected to the oil outlet of the oil pump (2). An accumulator (4) is connected after the overflow valve (3) pipeline and an electromagnetic directional valve (5) is connected to the accumulator (4); the electromagnetic directional valve (5) is connected to the pipeline in parallel.

2. The brake hydraulic station device according to claim 1, characterized in that, The oil tank (1) adopts a split structure design, and the oil tank (1) is divided into a heat dissipation area and a working area, with heat dissipation fins connected to the outside of the heat dissipation area.

3. The brake hydraulic station device according to claim 2, characterized in that, The heat sink is made of aluminum alloy with high thermal conductivity, with a thickness controlled at 1.5-2mm and a spacing of 5-8mm.

4. A brake hydraulic station device according to claim 3, characterized in that, The accumulator (4) can store hydraulic oil.

5. A brake hydraulic station device according to any one of claims 1-4, characterized in that, It also includes a hydraulic brake cylinder (6) connected to the solenoid directional valve (5), hydraulic pipelines, and pipeline interfaces.

6. A brake hydraulic station device according to claim 5, characterized in that, The hydraulic pipeline uses a large-diameter, low-friction coefficient high-pressure hose.

7. A brake hydraulic station device according to claim 6, characterized in that, The pipeline interface uses a high-pressure quick-connect fitting.

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