A hydraulic active stabilizer link system

Abstract

The utility model discloses a kind of hydraulic active stabilizer bar connecting rod systems, which belongs to vehicle chassis suspension system technical field.It mainly includes static hydraulic storage tank one, static hydraulic storage tank two, filter one, filter two, one-way pump, engine, overflow valve, reversing valve one, reversing valve two, electrical cut-off valve one, electrical cut-off valve two, electrical cut-off valve three, electrical cut-off valve four, double-acting cylinder one, inflatable energy accumulator and double-acting cylinder two, engine and one-way pump transmission connection, for output mechanical energy to one-way pump, the oil suction port of one-way pump is communicated with static hydraulic storage tank one by filter one, for sucking oil from static hydraulic storage tank one and pressurizing to form pressure oil, the oil inlet of overflow valve is connected in parallel on the oil outlet side of one-way pump, the oil return port of overflow valve is communicated to static hydraulic storage tank one, for limiting system maximum working pressure.The utility model integrates multiple functions, improves response speed and carrying capacity, adapts to different driving scenarios, and optimizes vehicle driving performance.

Description

Technical Field

[0001] This utility model belongs to the technical field of vehicle chassis suspension systems, and more specifically, it relates to a hydraulic active stabilizer bar linkage system. Background Technology

[0002] The stabilizer bar is a key component for improving a vehicle's anti-roll performance, but in off-road conditions, its inherent structure limits the dynamic travel of the suspension, leading to reduced wheel grip and decreased vehicle passability. Existing solutions, such as mechanical or simple hydraulic disconnect mechanisms, have significant drawbacks: electromechanical disconnect systems have weak impact resistance and lack position adjustment capabilities; traditional hydraulic disconnect solutions can only achieve simple on / off control, making it difficult to simultaneously meet the requirements of rigid locking and flexible damping, and they cannot work in conjunction with modern intelligent suspension systems. Overall, they are limited in function, slow in response, and have limited load capacity, making them unsuitable for complex driving scenarios.

[0003] To address the aforementioned technical problems, this application proposes a solution. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a hydraulic active stabilizer bar linkage system that integrates multiple functions, improves response speed and load-bearing capacity, adapts to different driving scenarios, and optimizes vehicle driving performance.

[0005] The hydraulic active stabilizer bar linkage system includes a hydrostatic reservoir 1, a hydrostatic reservoir 2, a filter 1, a filter 2, a one-way pump, an engine, an overflow valve, a directional valve 1, a directional valve 2, an electric shut-off valve 1, an electric shut-off valve 2, an electric shut-off valve 3, an electric shut-off valve 4, a double-acting cylinder 1, an air accumulator, and a double-acting cylinder 2. The engine is drivenly connected to the one-way pump and is used to output mechanical energy to the one-way pump. The oil inlet of the one-way pump is connected to the hydrostatic reservoir 1 through the filter 1, and is used to draw oil from the hydrostatic reservoir 1 and pressurize it to form pressurized oil. The oil inlet of the overflow valve is connected in parallel to the oil outlet side of the one-way pump, and the oil return port of the overflow valve is connected to the hydrostatic reservoir 1 to limit the maximum working pressure of the system.

[0006] Preferably, the oil inlets of the first and second directional valves are both connected to the oil outlet of the one-way pump to switch the flow path of the pressure oil; the oil outlet of the first directional valve is connected to the rodless and rod chambers of the first double-acting cylinder via the first electric shut-off valve, and the oil outlet of the second directional valve is connected to the rodless and rod chambers of the second double-acting cylinder via the fourth electric shut-off valve. The oil circuit between the first and fourth electric shut-off valves is connected in series with the second and third electric shut-off valves, and this oil circuit is connected in parallel with the air accumulator. The first and second double-acting cylinders are used to drive the stabilizer rod to perform reciprocating extension and retraction. The second hydrostatic reservoir is connected to the return oil side of the first and second directional valves via the second filter.

[0007] Preferably, the gas accumulator is a gas accumulator with a separator, used to isolate gas from hydraulic oil and prevent gas from dissolving into the oil.

[0008] Preferably, the first, second, third, and fourth electric shut-off valves are all normally open valves, which keep the oil circuit open under normal conditions and shut off the corresponding oil circuit when energized.

[0009] Preferably, the first and second directional valves are electromagnetically controlled three-position directional valves, which switch the valve core position by electromagnetic signal control to achieve the switching of the pressure oil flow direction.

[0010] Preferably, the first filter and the second filter are high-precision cartridge filters, with a filtration accuracy of not less than 20μm, used to intercept solid impurities in the oil.

[0011] Preferably, the oil circuits between the rodless chamber and the rod chamber of the double-acting cylinder one and the double-acting cylinder two and the corresponding electric shut-off valve are all connected in series with a one-way valve to restrict the unidirectional flow of oil and prevent the actuator from malfunctioning.

[0012] Preferably, heat dissipation fins are provided on the outer side of the hydrostatic storage tank 1 and hydrostatic storage tank 2 to accelerate the dissipation of oil heat.

[0013] Preferably, the unidirectional pump is a gear pump or a plunger pump, used to adapt to the driving requirements of stabilizer bar linkages with different pressure levels.

[0014] Compared with the prior art, the beneficial effects of this utility model are: Highly integrated functionality: A single system achieves three major functions: rigid connection, flexible disconnection, and length adjustment. Superior performance: The hydraulic system boasts high output force, strong impact resistance, and reliable operation, making it suitable for heavy-duty off-road vehicles. Intelligent control: It can be deeply integrated with the vehicle's intelligent chassis system, enabling adaptive mode switching based on multi-sensor information. Excellent ride smoothness: In flexible mode, the accumulator effectively absorbs vibrations, avoiding impact noises. Attached Figure Description

[0015] Figure 1 This is a system diagram of the overall structure of this utility model.

[0016] In the diagram, 1. Hydrostatic reservoir one; 2. Hydrostatic reservoir two; 3. Filter one; 4. Filter two; 5. One-way pump; 6. Engine; 7. Relief valve; 8. Directional valve one; 9. Directional valve two; 10. Electrically operated shut-off valve one; 11. Electrically operated shut-off valve two; 12. Electrically operated shut-off valve three; 13. Electrically operated shut-off valve four; 14. Double-acting cylinder one; 15. Air accumulator; 16. Double-acting cylinder two. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings: The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] like Figure 1 As shown, a hydraulic active stabilizer bar linkage system includes a hydrostatic reservoir 1, a hydrostatic reservoir 2, a filter 3, a filter 4, a one-way pump 5, an engine 6, an overflow valve 7, a reversing valve 1 8, a reversing valve 2 9, an electric shut-off valve 1 10, an electric shut-off valve 2 11, an electric shut-off valve 3 12, an electric shut-off valve 4 13, a double-acting cylinder 1 14, an air accumulator 15, and a double-acting cylinder 2 16. The engine 6 is connected to the one-way pump 5 via a drive mechanism, and is used to output mechanical energy to the one-way pump 5. The oil inlet of the one-way pump 5 is connected to the hydrostatic reservoir 1 via the filter 3, and is used to draw oil from the hydrostatic reservoir 1 and pressurize it to form pressurized oil. The oil inlet of the overflow valve 7 is connected in parallel to the oil outlet side of the one-way pump 5, and the oil return port of the overflow valve 7 is connected to the hydrostatic reservoir 1, used to limit the maximum working pressure of the system.

[0019] The inlets of directional valve 8 and directional valve 9 are both connected to the outlet of the one-way pump 5 to switch the flow path of the pressure oil. The outlet of directional valve 8 is connected to the rodless and rod chambers of double-acting cylinder 14 via electric shut-off valve 10. The outlet of directional valve 9 is connected to the rodless and rod chambers of double-acting cylinder 16 via electric shut-off valve 4 13. The oil circuit between electric shut-off valve 10 and electric shut-off valve 4 13 is connected in series with electric shut-off valve 2 11 and electric shut-off valve 3 12, and the oil circuit is connected in parallel with the air accumulator 15. Double-acting cylinder 14 and double-acting cylinder 2 16 are used to drive the stabilizer bar linkage to perform reciprocating extension and retraction. The hydrostatic reservoir 2 is connected to the return oil side of directional valve 8 and directional valve 2 9 via filter 2 4.

[0020] The gas accumulator 15 is a gas accumulator with a separator, used to isolate gas from hydraulic oil, prevent gas from dissolving into the oil, absorb pressure pulsations, stabilize the system, and store / release hydraulic energy (to replenish system leaks and cope with peak flow). Electrically shut-off valves 10, 11, 12, and 13 are all normally open 2-way valves. Under normal conditions, they keep the oil circuit open; when energized, they shut off. The corresponding oil circuits are used to cut off the oil supply to the corresponding cylinder when needed (such as for safety protection or circuit switching), thus achieving on / off control of the oil circuit.

[0021] Directional control valves 8 and 9 are electromagnetically controlled three-position directional control valves. They switch the valve core position via electromagnetic signals to change the direction of pressurized oil flow. Controlling the flow and on / off of hydraulic oil: By switching the valve core position, the path of pressurized oil into the "rodless chamber / rod chamber" of the double-acting cylinder is changed, achieving the cylinder's "extend / retract / stop" action. Filters 3 and 4 are high-precision cartridge filters with a filtration accuracy of no less than 20μm, used to intercept solid impurities in the oil and ensure the cleanliness of the system oil. The oil circuits between the rodless chamber and rod chamber of double-acting cylinder 14 and double-acting cylinder 16 and the corresponding electrically shut-off valve are all connected in series with check valves to restrict unidirectional oil flow and prevent malfunction of the actuators. The outer side of the hydrostatic reservoirs 1 and 2 are equipped with heat dissipation fins to accelerate the dissipation of oil heat. The unidirectional pump 5 is either a gear pump or a plunger pump, used to adapt to the drive requirements of stabilizer bar linkages with different pressure levels.

[0022] The electronic control unit controls the coordinated operation of the valves and power source of the above-mentioned device. Electrically shut-off valves 10, 11, 12, and 13 provide a degree of elasticity to the cylinders, allowing double-acting cylinders 14 and 16 to extend and retract freely, increasing tire bounce. Directional control valves 8 and 9 can disconnect and connect to the electrically shut-off valves 10, 11, 12, 13, 14, and 16, as well as the air accumulator.

[0023] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydraulic active stabilizer bar linkage system, comprising a hydrostatic reservoir one (1), a hydrostatic reservoir two (2), a filter one (3), a filter two (4), a one-way pump (5), an engine (6), an overflow valve (7), a reversing valve one (8), a reversing valve two (9), an electric shut-off valve one (10), an electric shut-off valve two (11), an electric shut-off valve three (12), an electric shut-off valve four (13), a double-acting cylinder one (14), an air-filled accumulator (15), and a double-acting cylinder two (16), characterized in that: The engine (6) is connected to the one-way pump (5) for outputting mechanical energy to the one-way pump (5). The oil inlet of the one-way pump (5) is connected to the hydrostatic reservoir (1) via the filter (3) for drawing oil from the hydrostatic reservoir (1) and pressurizing it to form pressurized oil. The oil inlet of the overflow valve (7) is connected in parallel to the oil outlet side of the one-way pump (5). The oil return port of the overflow valve (7) is connected to the hydrostatic reservoir (1) for limiting the maximum working pressure of the system.

2. The hydraulic active stabilizer bar linkage system according to claim 1, characterized in that: The inlets of directional valve 1 (8) and directional valve 2 (9) are connected to the outlet of directional pump 5 to switch the flow path of pressure oil. The outlet of directional valve 1 (8) is connected to the rodless chamber and rod chamber of double-acting cylinder 1 (14) via electric shut-off valve 1 (10). The outlet of directional valve 2 (9) is connected to the rodless chamber and rod chamber of double-acting cylinder 2 (16) via electric shut-off valve 4 (13). The oil circuit between electric shut-off valve 1 (10) and electric shut-off valve 4 (13) is connected in series with electric shut-off valve 2 (11) and electric shut-off valve 3 (12), and the oil circuit is connected in parallel with the air accumulator (15). Double-acting cylinder 1 (14) and double-acting cylinder 2 (16) are used to drive the stabilizer bar linkage to perform reciprocating extension and retraction. The hydrostatic reservoir 2 (2) is connected to the return oil side of directional valve 1 (8) and directional valve 2 (9) via filter 2 (4).

3. The hydraulic active stabilizer bar linkage system according to claim 1, characterized in that: The gas accumulator (15) is a gas accumulator with a separator, used to isolate gas from hydraulic oil and prevent gas from dissolving into the oil.

4. The hydraulic active stabilizer bar linkage system according to claim 1, characterized in that: Electrical shut-off valve 1 (10), electrical shut-off valve 2 (11), electrical shut-off valve 3 (12), and electrical shut-off valve 4 (13) are all normally open 2-way valves. Under normal conditions, the oil circuit is kept open, and the corresponding oil circuit is shut off when energized.

5. A hydraulic active stabilizer bar linkage system according to claim 1, characterized in that: The first reversing valve (8) and the second reversing valve (9) are electromagnetically controlled three-position reversing valves. The valve core position is switched by electromagnetic signal control to realize the switching of pressure oil flow direction.

6. The hydraulic active stabilizer bar linkage system according to claim 1, characterized in that: Filter 1 (3) and Filter 2 (4) are high-precision cartridge filters with a filtration accuracy of not less than 20μm, used to intercept solid impurities in oil.

7. The hydraulic active stabilizer bar linkage system according to claim 1, characterized in that: The oil circuits between the rodless chamber and the rod chamber of the double-acting cylinder 1 (14) and the corresponding electric shut-off valve are all connected in series with a check valve to restrict the unidirectional flow of oil and prevent the actuator from malfunctioning.

8. A hydraulic active stabilizer bar linkage system according to claim 1, characterized in that: The outer side of the hydrostatic storage tank 1 (1) and hydrostatic storage tank 2 (2) is provided with heat dissipation fins to accelerate the dissipation of oil heat.

9. A hydraulic active stabilizer bar linkage system according to claim 1, characterized in that: The one-way pump (5) is a gear pump or a plunger pump, used to adapt to the driving requirements of stabilizer bar linkages with different pressure levels.

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