Lightweight hydraulic device for vehicles

Abstract

The utility model discloses a kind of light weight hydraulic devices for vehicle, it is related to automobile engineering technical field, including base, the upper end of the base is provided with hydraulic pump, motor, control valve group and liquid storage tank, the tank wall of the liquid storage tank is provided with heat dissipation part, and heat dissipation part penetrates tank wall while connecting inside tank and outside tank, the heat dissipation part includes the aluminum barrel setting in the periphery of liquid storage tank and the spiral blade setting in liquid storage tank.The utility model has beneficial effect: the spiral blade in liquid tank guides hydraulic oil to form spiral flow, increase the contact area and time of hydraulic oil and the inner wall of liquid storage tank and spiral blade, the spiral blade is connected with the aluminum barrel in the periphery of liquid storage tank by aluminum rod, cooperate the heat dissipation path and area of increasing heat dissipation path and area of one pass-through groove on aluminum barrel, so that the heat of hydraulic oil is rapidly dissipated to outside world through spiral blade, aluminum rod, aluminum barrel, solve the problem of high temperature deterioration of hydraulic oil caused by poor thermal conductivity of thin-walled liquid storage tank, ensure system transmission efficiency and stability.

Description

Technical Field

[0001] This utility model relates to the field of automotive engineering technology, and in particular to a lightweight hydraulic device for vehicles. Background Technology

[0002] The core function of lightweight hydraulic systems in automobiles is to provide power to key vehicle systems (such as braking, steering, and suspension) through hydraulic transmission, enabling control and execution. Its main structure typically includes hydraulic pumps, hydraulic cylinders, control valve assemblies, lightweight pipelines, and thin-walled reservoirs made of lightweight materials (such as aluminum alloys and high-strength plastics). The primary reason for lightweighting is to reduce the vehicle's curb weight, directly improving fuel economy and driving range, aligning with current energy conservation, emission reduction, and the development needs of new energy vehicles.

[0003] The specific operating procedure is as follows: After the vehicle starts, the power source drives the hydraulic pump to rotate, drawing in and pressurizing the hydraulic oil in the reservoir, converting it into high-pressure oil; when the driver triggers a control command (such as braking), the ECU sends an electrical signal to the control valve group to control the valve opening / closing, adjusting the pressure, flow direction, and flow rate of the high-pressure oil; the high-pressure oil enters the vehicle's actuator (piston / rotor) through the pipeline, pushing the piston / rotor to move, converting hydraulic energy into mechanical energy. After the control is completed, the ECU controls the valve to reset, and the low-pressure oil in the actuator flows back to the reservoir through the return oil pipeline. The hydraulic pump continues to draw oil, waiting for the next cycle.

[0004] However, the thin-walled metal components used in existing technologies (such as reservoirs) have a much lower thermal conductivity than traditional cast iron. The heat generated by the hydraulic oil during operation is difficult to dissipate quickly, which can easily lead to high-temperature deterioration of the hydraulic oil over time, affecting transmission efficiency and even causing system overheating failure. To address this, we propose a lightweight hydraulic device for vehicles to solve the problems encountered in existing technologies. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A lightweight hydraulic device for vehicles includes a base. A hydraulic pump, a motor, a control valve group, and a liquid storage tank are arranged at the upper end of the base. The liquid storage tank has a heat dissipation component on its wall, which penetrates the tank wall and connects the inside and outside of the tank. The heat dissipation component includes an aluminum barrel arranged around the liquid storage tank and a spiral blade arranged inside the liquid storage tank.

[0008] In a preferred embodiment of the lightweight hydraulic device for vehicles described in this utility model, the upper end of the base is fixed with bolts to a hydraulic pump, a motor, and a reservoir; a flexible coupling is provided between the output end of the motor and the input shaft end of the hydraulic pump to drive the hydraulic pump; and the upper end of the hydraulic pump is fixed to the lower end of the control valve group via a bracket.

[0009] In a preferred embodiment of the lightweight hydraulic device for vehicles described in this utility model, a low-pressure suction pipe is provided between the input end of the hydraulic pump and the upper end of the reservoir via a quick connector.

[0010] In a preferred embodiment of the lightweight hydraulic device for vehicles described in this utility model, a paper filter element is installed in the middle section of the low-pressure oil suction pipe via a quick connector.

[0011] In a preferred embodiment of the lightweight hydraulic device for vehicles described in this utility model, a high-pressure oil outlet pipe is provided between the output end of the hydraulic pump and the input end of the control valve group via a quick connector.

[0012] In a preferred embodiment of the lightweight hydraulic device for vehicles described in this utility model, a low-pressure return oil pipe is provided between the output end of the control valve group and the input end of the reservoir via a quick connector. An oil inlet and an oil outlet are provided on one side of the control valve group for connection with the vehicle braking system. The inner end of the oil inlet is connected to the low-pressure return oil pipe for returning oil from the braking system to the reservoir. The high-pressure oil outlet is connected to the inner end of the oil outlet for supplying oil to the braking system.

[0013] In a preferred embodiment of the lightweight hydraulic device for vehicles described in this utility model, the inner wall of the aluminum barrel is fixed to the outer surface of the liquid storage tank by welding, and multiple No. 1 through slots are opened inside the aluminum barrel.

[0014] In a preferred embodiment of the lightweight hydraulic device for vehicles described in this utility model, an aluminum rod is integrally provided on the outer side of the spiral blade, and one end of the aluminum rod passes through the pipe wall of the storage tank and is welded to the inner wall of the aluminum barrel.

[0015] As a preferred embodiment of the lightweight hydraulic device for vehicles described in this utility model, the spiral blade is arranged in a tapered shape with a larger diameter at the top and a smaller diameter at the bottom, and the diameter at the top is larger than the diameter at the bottom.

[0016] As a preferred embodiment of the lightweight hydraulic device for vehicles described in this utility model, the inner wall of the liquid storage tank is welded with a circular plate, the circular plate is provided with multiple No. 2 through slots, both the No. 2 through slots and the No. 1 through slot are pentagonal hole structures, and the hole diameter of the No. 2 through slot is 0.8-1.2mm.

[0017] The beneficial effects of this utility model are as follows: the spiral blade inside the liquid tank guides the hydraulic oil to form a swirling flow, increasing the contact area and time between the hydraulic oil and the inner wall of the liquid tank and the spiral blade. The spiral blade is connected to the aluminum barrel outside the liquid tank through the aluminum rod. The No. 1 through slot on the aluminum barrel increases the heat dissipation path and area, so that the heat of the hydraulic oil can be quickly dissipated to the outside through the spiral blade, aluminum rod and aluminum barrel. This solves the problem of high temperature deterioration of hydraulic oil caused by poor thermal conductivity of thin-walled liquid tanks, and ensures the transmission efficiency and stability of the system.

[0018] Meanwhile, the spiral blades inside the reservoir guide the hydraulic oil to form a swirling flow. The swirling flow causes the air bubbles inside the hydraulic oil to collide and coalesce. This, combined with the No. 2 channel on the circular plate, further disrupts the flow, accelerates the separation of air bubbles, and eliminates foam. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of a lightweight hydraulic device for vehicles.

[0021] Figure 2 This is a top view of a lightweight hydraulic device for automobiles.

[0022] Figure 3 This is a schematic diagram of a heat sink component for a lightweight hydraulic device used in automobiles.

[0023] Figure 4 This is a schematic diagram showing the connection between the heat sink and the liquid storage tank of a lightweight hydraulic device for automobiles.

[0024] Figure 5 This is an exploded view of the heat sink component of a lightweight hydraulic device for automobiles.

[0025] Figure 6 A lightweight hydraulic device for automobiles Figure 3 Enlarged view of point a in the middle.

[0026] The following are labeled in the diagram: 1. Base; 2. Hydraulic pump; 3. Motor; 4. Control valve assembly; 5. Liquid storage tank; 6. Heat sink; 61. Aluminum barrel; 62. No. 1 through-slot; 63. Spiral blade; 64. Circular plate; 65. Aluminum rod; 66. No. 2 through-slot; 7. Flexible coupling; 8. Low-pressure suction pipe; 9. Paper filter element; 10. Low-pressure return pipe; 11. High-pressure outlet pipe. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0030] Example 1:

[0031] Reference Figures 1 to 6 This is the first embodiment of the present utility model. This embodiment provides a lightweight hydraulic device for vehicles, including a base 1. The upper end of the base 1 is provided with a hydraulic pump 2, a motor 3, a control valve group 4 and a liquid storage tank 5. The tank wall of the liquid storage tank 5 is provided with a heat dissipation component 6, and the heat dissipation component 6 penetrates the tank wall and connects the inside and outside of the tank. The heat dissipation component 6 includes an aluminum barrel 61 disposed around the liquid storage tank 5 and a spiral blade 63 disposed inside the liquid storage tank 5.

[0032] The base 1 provides an installation platform for the hydraulic pump 2, motor 3, control valve group 4, and reservoir 5, enabling the integrated assembly of each core component and ensuring the overall structural stability of the device. The motor 3 provides power to the hydraulic pump 2, driving it to operate and complete the intake and pressurization of hydraulic oil. The hydraulic pump 2 draws in and pressurizes the hydraulic oil from the reservoir 5, converting it into high-pressure oil to power vehicle braking and other systems. The control valve group 4 is used to regulate the pressure, flow direction, and flow rate of the high-pressure oil, controlling the operation of the hydraulic system to meet vehicle control requirements. The reservoir 5 stores hydraulic oil, continuously supplying oil to the hydraulic pump 2, and also serves as a return container for low-pressure oil (this is existing technology and will not be described in detail). The heat sink 6 penetrates the wall of the reservoir 5, connecting the inside and outside of the tank. Its outer aluminum barrel 61 cooperates with the spiral blade 63 inside the tank, which can quickly transfer the heat of the hydraulic oil through the high thermal conductivity of aluminum, and also increase the contact area between the hydraulic oil and the heat sink structure with the spiral blade 63, dissipating the heat generated by the hydraulic oil during operation, preventing the oil from deteriorating at high temperatures, and ensuring the stable operation of the hydraulic system.

[0033] It should be noted that the control valve assembly 4 is equipped with multiple sensors, such as an inlet temperature and pressure sensor: which monitors the temperature and pressure of the hydraulic oil at the inlet in real time, providing the ECU with basic hydraulic fluid status parameters to facilitate judgment of whether the system is within the normal operating temperature range and whether the inlet pressure is stable. An outlet pressure sensor: which detects the high-pressure hydraulic fluid pressure output to the vehicle's braking system. The ECU adjusts the valve opening based on this pressure signal to ensure that the braking pressure meets operational requirements. Main valve port pressure sensors: which monitor the pressure changes at each main valve port, assisting the ECU in understanding pressure fluctuations during valve switching and improving system control accuracy. A flow sensor: which monitors the hydraulic oil flow through the control valve assembly 4 (including the high-pressure oil flow entering the braking system and the low-pressure oil flow returning to the reservoir 5). The ECU combines the flow signal to match braking requirements (e.g., increasing flow during emergency braking and decreasing flow during gentle braking). Simultaneously, it uses abnormal flow to determine whether the pipeline is blocked or leaking; this is existing technology and will not be elaborated upon.

[0034] After receiving signals from various sensors within the control valve assembly 4, the ECU performs real-time analysis and feedback adjustment. When the flow sensor detects an abnormal flow (e.g., flow below the threshold indicating pipe blockage, flow above the threshold indicating leakage), the ECU immediately triggers a dual feedback mechanism. On one hand, it sends a signal to the hydraulic pump 2 to reduce output power and decrease oil delivery to avoid system pressure imbalance. On the other hand, it triggers an alarm on the vehicle's instrument panel (e.g., a malfunction indicator lamp illuminates) to inform the driver of the system malfunction. Simultaneously, the ECU combines data from the inlet temperature and pressure sensor. If the oil temperature is too high, it coordinates with the valve opening of the control valve assembly 4 to slow down the oil circulation speed and works with the heat sink 6 to improve heat dissipation efficiency, forming a complete closed-loop control system of signal detection, analysis and judgment, execution adjustment, and alarm notification. This is existing technology and will not be described in detail.

[0035] Example 2:

[0036] Reference Figure 1 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0037] Specifically, Figure 1 In the middle, the upper end of the base 1 is fixed with bolts to the hydraulic pump 2, motor 3 and liquid storage tank 5. A flexible coupling 7 is provided between the output end of the motor 3 and the input shaft end of the hydraulic pump 2 to drive the hydraulic pump 2 to work. The upper end of the hydraulic pump 2 is fixed to the lower end of the control valve group 4 through the bracket.

[0038] By clarifying the bolt fixing method between the base 1 and the hydraulic pump 2, motor 3, and liquid storage tank 5, as well as the method of fixing the motor 3 to the hydraulic pump 2 via the flexible coupling 7 and the bracket fixing method between the hydraulic pump 2 and the control valve group 4, stable assembly and power transmission of each core component are achieved.

[0039] Specifically, Figure 1In the middle section of the hydraulic pump 2, a low-pressure suction pipe 8 is connected to the upper end of the liquid storage tank 5 via a quick-connect coupling. A paper filter element 9 is installed in the middle section of the low-pressure suction pipe 8 via a quick-connect coupling.

[0040] The hydraulic pump 2 input end is connected to the reservoir 5 by a quick connector to establish a hydraulic oil intake channel. The paper filter element 9 filters the intake hydraulic oil to prevent impurities from affecting the system operation. This is existing technology and will not be described in detail.

[0041] Specifically, Figure 1 In the middle, a high-pressure oil outlet pipe 11 is provided between the output end of the hydraulic pump 2 and the input end of the control valve group 4 through a quick connector;

[0042] By connecting the output end of hydraulic pump 2 to the input end of control valve group 4 through quick coupling, a high-pressure oil delivery channel is established to deliver pressurized hydraulic oil to control valve group 4.

[0043] Specifically, Figure 1 In the middle, a low-pressure return oil pipe 10 is provided between the output end of the control valve group 4 and the input end of the reservoir 5 through a quick connector. An oil inlet and an oil outlet are provided on one side of the control valve group 4 for connection with the vehicle braking system. The inner end of the oil inlet is connected to the low-pressure return oil pipe 10 for the return oil from the braking system to the reservoir 5. The high-pressure oil outlet pipe 11 is connected to the inner end of the oil outlet for supplying oil to the braking system.

[0044] By connecting the output end of the control valve assembly 4 to the reservoir 5 with a quick connector, a low-pressure oil return channel is formed. At the same time, the connection interface between the control valve assembly 4 and the vehicle braking system and the oil flow relationship are clarified, so as to realize the oil supply and return of the braking system.

[0045] Example 3:

[0046] Reference Figure 3 , Figure 6 and Figure 5 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0047] Specifically, Figure 3 In the middle, the inner wall of the aluminum barrel 61 is fixed to the outer surface of the liquid storage tank 5 by welding, and multiple No. 1 through grooves 62 are opened inside the aluminum barrel 61;

[0048] The aluminum barrel 61 is fixed to the outside of the liquid storage tank 5 by welding, and the No. 1 channel 62 increases the heat dissipation path and area to assist the liquid storage tank 5 in heat dissipation.

[0049] Specifically, Figure 6 In the middle, at least six aluminum rods 65 are integrally provided on the outer side of the spiral blade 63 with a height of 3-5cm. One end of the aluminum rod 65 passes through the pipe wall of the liquid storage tank 5 and is welded to the inner wall of the aluminum barrel 61.

[0050] The spiral blade 63 is fixed inside the liquid storage tank 5 and connected to the aluminum barrel 61 by the aluminum rod 65, providing support for the spiral blade 63 and simultaneously establishing a heat transfer path. It should be noted that a sealing ring is provided around the aluminum rod 65 to seal between it and the pipe wall of the liquid storage tank 5. At an ambient temperature of 35℃ and an oil temperature rise of 40℃, the heat sink 6 can achieve a heat dissipation power of 120W.

[0051] Specifically, Figure 5 In the middle, the spiral blade 63 is a tapered variable diameter with a larger diameter at the top and a smaller diameter at the bottom, and the diameter at the top is larger than the diameter at the bottom;

[0052] The spiral blade 63 has a tapered diameter that is larger at the top and smaller at the bottom, which helps to guide the hydraulic oil to form a swirling flow, thereby enhancing heat dissipation and defoaming effects.

[0053] Specifically, Figure 5 In the middle, the inner wall of the liquid storage tank 5 is welded with a circular plate 64, and the circular plate 64 is provided with twenty No. 2 through slots 66. Both the No. 2 through slots 66 and the No. 1 through slot 62 are pentagonal hole structures, and the hole diameter of the No. 2 through slot 66 is 0.8-1.2mm.

[0054] The circular plate 64 is fixed inside the liquid storage tank 5, and the second through-slot 66 further disrupts the flow of hydraulic oil, accelerating bubble separation in conjunction with the swirling flow, while also assisting in heat dissipation. Flow restriction and turbulence work synergistically: the 0.8-1.2mm orifice diameter maintains a high flow rate for the hydraulic oil, both disrupting the swirling flow and cutting and pushing away bubbles; the lower limit orifice diameter of 0.8mm can block uncoalesced microbubbles, preventing them from entering the circulation.

[0055] Working principle: The base 1 is fixed to the reinforcing beam in the vehicle chassis by bolts. After the vehicle starts, the motor 3 drives the hydraulic pump 2 to rotate through the flexible coupling 7. The hydraulic pump 2 draws hydraulic oil from the reservoir 5 through the low-pressure oil suction pipe 8. The paper filter element 9 filters the hydraulic oil. After the hydraulic pump 2 pressurizes the hydraulic oil, it delivers it to the control valve group 4 through the high-pressure oil outlet pipe 11. The control valve group 4 controls the opening and closing of the valves according to the ECU electrical signal, and adjusts the pressure, flow direction and flow rate of the high-pressure oil. The high-pressure oil enters the vehicle braking system through the oil outlet of the control valve group 4, and drives the actuator to move to achieve braking. After the operation is completed, the low-pressure oil of the braking system flows back to the reservoir 5 through the oil inlet of the control valve group 4 and the low-pressure oil return pipe 10. The hydraulic pump 2 continues to draw oil and waits for the next cycle.

[0056] In terms of heat dissipation, the low-pressure oil of the braking system flows back to the reservoir 5 through the oil inlet of the control valve group 4 and the low-pressure oil return pipe 10. The spiral blade 63 inside the reservoir 5 guides the hydraulic oil to form a swirling flow, increasing the contact area and time between the hydraulic oil and the inner wall of the reservoir 5 and the spiral blade 63. The spiral blade 63 is connected to the aluminum barrel 61 on the periphery of the reservoir 5 through the aluminum rod 65. Together with the No. 1 through slot 62 on the aluminum barrel 61, the heat dissipation path and area are increased, so that the heat of the hydraulic oil can be quickly dissipated to the outside through the spiral blade 63, the aluminum rod 65 and the aluminum barrel 61, solving the problem of high temperature deterioration of hydraulic oil caused by poor thermal conductivity of thin-walled reservoirs, and ensuring the transmission efficiency and stability of the system.

[0057] At the same time, the spiral blades 63 inside the liquid storage tank 5 guide the hydraulic oil to form a swirling flow. The swirling flow causes the air bubbles inside the hydraulic oil to collide and coalesce. In conjunction with the second through groove 66 on the circular plate 64, the flow is further disturbed, accelerating the separation of air bubbles and eliminating foam.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A lightweight hydraulic device for vehicles, comprising a base (1), wherein a hydraulic pump (2), a motor (3), a control valve assembly (4), and a reservoir (5) are disposed at the upper end of the base (1), characterized in that: The tank wall of the liquid storage tank (5) is provided with a heat dissipation component (6), and the heat dissipation component (6) penetrates the tank wall and connects the inside and outside of the tank. The heat dissipation component (6) includes an aluminum barrel (61) disposed around the liquid storage tank (5) and a spiral blade (63) disposed inside the liquid storage tank (5).

2. The lightweight hydraulic device for vehicles as described in claim 1, characterized in that: The upper end of the base (1) is fixed with a hydraulic pump (2), a motor (3) and a liquid storage tank (5) by bolts. A flexible coupling (7) is provided between the output end of the motor (3) and the input shaft end of the hydraulic pump (2) to drive the hydraulic pump (2) to work. The upper end of the hydraulic pump (2) is fixed to the lower end of the control valve group (4) by a bracket.

3. The lightweight hydraulic device for vehicles as described in claim 2, characterized in that: A low-pressure suction pipe (8) is provided between the input end of the hydraulic pump (2) and the upper end of the liquid storage tank (5) via a quick connector.

4. A lightweight hydraulic device for vehicles as described in claim 3, characterized in that: The middle section of the low-pressure oil suction pipe (8) is fitted with a paper filter element (9) via a quick connector.

5. A lightweight hydraulic device for vehicles as described in claim 4, characterized in that: A high-pressure oil outlet pipe (11) is provided between the output end of the hydraulic pump (2) and the input end of the control valve group (4) via a quick connector.

6. A lightweight hydraulic device for vehicles as described in claim 5, characterized in that: A low-pressure return oil pipe (10) is provided between the output end of the control valve assembly (4) and the input end of the reservoir (5) via a quick connector. An oil inlet and an oil outlet are provided on one side of the control valve assembly (4) for connection with the vehicle braking system. The inner end of the oil inlet is connected to the low-pressure return oil pipe (10) for the return oil from the braking system to the reservoir (5). The high-pressure oil outlet pipe (11) is connected to the inner end of the oil outlet for supplying oil to the braking system.

7. A lightweight hydraulic device for vehicles as described in claim 1, characterized in that: The inner wall of the aluminum barrel (61) is fixed to the outer surface of the liquid storage tank (5) by welding, and multiple No. 1 through slots (62) are opened inside the aluminum barrel (61).

8. A lightweight hydraulic device for vehicles as described in claim 7, characterized in that: An aluminum rod (65) is integrally provided on the outer side of the spiral blade (63). One end of the aluminum rod (65) passes through the pipe wall of the liquid storage tank (5) and is welded to the inner wall of the aluminum barrel (61).

9. A lightweight hydraulic device for vehicles as described in claim 8, characterized in that: The spiral blade (63) is a tapered blade with a larger diameter at the top and a smaller diameter at the bottom, and the diameter at the top is larger than the diameter at the bottom.

10. A lightweight hydraulic device for vehicles as described in claim 1 or 7, characterized in that: The inner wall of the liquid storage tank (5) is welded with a circular plate (64). The circular plate (64) is provided with multiple second-level through grooves (66). Both the second-level through grooves (66) and the first-level through grooves (62) are pentagonal hole structures. The hole diameter of the second-level through grooves (66) is 0.8-1.2mm.

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