Hydraulic station system and hydraulic control method

Abstract

The invention discloses a hydraulic station system and a hydraulic control method. Comprising a multifunctional oil tank, a first oil supply pipeline, a second oil supply pipeline, a first oil return pipeline and a second oil return pipeline, the multifunctional oil tank comprises a cavity and a shell, the shell comprises a top plate, the cavity of the multifunctional oil tank is divided into a first oil cavity and a second oil cavity by a partition plate, and a gap is formed between the partition plate and the top plate; the first oil supply pipeline and the first oil return pipeline are connected to the first oil cavity; the second oil supply pipeline and the second oil return pipeline are connected to the second oil cavity; the first oil supply pipeline and the second oil supply pipeline are both connected to an oil inlet cavity of the executing mechanism, and the first oil return pipeline and the second oil return pipeline are both connected to an oil return cavity of the executing mechanism. Redundant design is achieved through the multifunctional oil tank, the first oil supply pipeline, the second oil supply pipeline, the first oil return pipeline and the second oil return pipeline, and normal oil supply can be still kept under the condition that the multifunctional oil tank or the pipelines are damaged.

Description

Technical Field

[0001] The present invention relates to the field of hydraulic systems and control technologies, and in particular to a hydraulic station system and a hydraulic control method. Background Art

[0002] Existing hydraulic systems utilize internal redundancy to improve performance. However, component failures are correlated and dynamic, and failure rates are uncertain. These characteristics make it difficult to assess their reliability using traditional reliability modeling methods. Furthermore, most existing hydraulic stations lack redundant circuits. Even when redundant circuits are implemented, they operate independently, unable to withstand complex and changing external environments. Hydraulic control can easily fail if the hydraulic station system is damaged. Summary of the Invention

[0003] In response to the above-mentioned defects or improvement needs of the prior art, the present invention provides a hydraulic station system and a hydraulic control method, which realizes a redundant design by adopting a multi-functional oil tank, a first oil supply pipeline, a second oil supply pipeline, a first oil return pipeline, and a second oil return pipeline, and can maintain normal oil supply even when the multi-functional oil tank or pipeline is damaged.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: In some embodiments, a hydraulic station system is provided, the hydraulic station system comprising: a multifunctional oil tank, a first oil supply pipeline, a second oil supply pipeline, a first oil return pipeline, and a second oil return pipeline; The first oil supply pipeline includes a first oil pump, a first oil supply one-way valve, and a first oil supply ball valve; The second oil supply pipeline includes a second oil pump, a second oil supply one-way valve, and a second oil supply ball valve; The first oil return pipeline includes a first oil return one-way valve and a first oil return ball valve; The second oil return pipeline includes a second oil return one-way valve and a second oil return ball valve; The multifunctional oil tank includes a cavity and an outer shell, the outer shell includes a top plate, a partition is provided in the cavity, and a gap is formed between the partition and the top plate; the partition divides the cavity into a first oil chamber and a second oil chamber, and the first oil chamber and the second oil chamber are connected through the gap; The first oil supply pipeline and the first oil return pipeline are connected to the first oil chamber; The second oil supply pipeline and the second oil return pipeline are connected to the second oil chamber; The first oil supply pipeline and the second oil supply pipeline are both connected to the oil inlet chamber of the actuator, and the first oil return pipeline and the second oil return pipeline are both connected to the oil return chamber of the actuator.

[0005] In some embodiments, a third oil supply ball valve is provided between the first oil supply pipeline and the second oil supply pipeline, a first end of the third oil supply ball valve is connected between the first oil supply one-way valve and the first oil supply ball valve, and a second end of the third oil supply ball valve is connected between the second oil supply one-way valve and the second oil supply ball valve.

[0006] In some embodiments, the first oil supply line, the second oil supply line, the first oil return line, and the second oil return line are provided with a first filter, a second filter, a third filter, and a fourth filter, respectively; The first filter is arranged between the first oil pump and the first oil supply one-way valve; The second filter is arranged between the second oil pump and the second oil supply one-way valve; The third filter is arranged between the first oil return one-way valve and the first oil chamber; The fourth filter is disposed between the second oil return one-way valve and the second oil chamber.

[0007] In some embodiments, the first oil supply pipeline is connected to two circuit switching valves, namely a first overflow unloading valve and a second overflow unloading valve, wherein first ends of the first overflow unloading valve and the second overflow unloading valve are both connected between the first oil pump and the first filter, and second ends of the first overflow unloading valve and the second overflow unloading valve are both connected to the first oil chamber; Two circuit switching valves are connected to the second oil supply pipeline, namely the third overflow unloading valve and the fourth overflow unloading valve. The first ends of the third overflow unloading valve and the fourth overflow unloading valve are connected between the second oil pump and the second filter, and the second ends of the third overflow unloading valve and the fourth overflow unloading valve are connected to the second oil chamber.

[0008] In some embodiments, each of the overflow unloading valves is connected to a circuit switching valve, and the circuit switching valve is a two-position two-way solenoid valve.

[0009] In some embodiments, the circuit switching valve includes a first circuit switching valve, a second circuit switching valve, a third circuit switching valve, and a fourth circuit switching valve; One end of the first circuit switching valve is connected to the first overflow unloading valve, and the other end is connected between the first oil pump and the first filter; One end of the second circuit switching valve is connected to the second overflow unloading valve, and the other end is connected between the first oil pump and the first filter; One end of the third circuit switching valve is connected to the third overflow unloading valve, and the other end is connected between the second oil pump and the second filter; One end of the fourth circuit switching valve is connected to the fourth overflow unloading valve, and the other end is connected between the second oil pump and the second filter; In an initial state, one of the first circuit switching valve and the second circuit switching valve is in a connecting position, and the other is in a blocking position; In an initial state, one of the third circuit switching valve and the fourth circuit switching valve is in a connecting position, and the other is in a blocking position.

[0010] In some embodiments, the first oil chamber and the second oil chamber are both provided with a liquid level gauge and a liquid temperature gauge.

[0011] In some embodiments, the cavity height of the multifunctional oil tank is Hq, the multifunctional oil tank contains hydraulic oil, when the multifunctional oil tank is in a horizontal state, the initial height of the hydraulic oil is Hy, and the height of the partition is Hg; The cavity height Hq of the multifunctional oil tank, the initial height Hy of the hydraulic oil, and the height Hg of the partition satisfy the following relationship: When the multifunctional oil tank is in a horizontal state, Hq>Hy>Hg.

[0012] In some embodiments, a hydraulic control method is further provided, wherein the hydraulic control method uses the hydraulic system as described above to perform hydraulic control on the actuator.

[0013] In some embodiments, the hydraulic control method includes: Under normal conditions, the first oil supply ball valve, the second oil supply ball valve, the third oil supply ball valve, the first oil return ball valve, and the second oil return ball valve are all open, and oil is supplied to the actuator through the first oil supply pipeline and / or the second oil supply pipeline; When the first oil chamber leaks oil, the first oil return ball valve is closed, and oil is returned through the second oil return pipeline; When the second oil chamber leaks oil, the second oil return ball valve is closed, and the oil is returned through the first oil return pipeline.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: the hydraulic station system and the hydraulic control method realize redundant design by adopting a multi-function oil tank, a first oil supply pipeline, a second oil supply pipeline, a first oil return pipeline, and a second oil return pipeline, and can maintain normal oil supply even when the multi-function oil tank or the pipeline is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the hydraulic station system structure in some embodiments of the present invention.

[0016] Figure 2 Schematic diagram of the structure of a multifunctional oil tank of a hydraulic station system in some embodiments of the present invention.

[0017] Figure 3Schematic diagram of the structure of a circuit switching valve of a hydraulic station system in some embodiments of the present invention.

[0018] Figure 4 Schematic diagram of different states of a multifunctional oil tank of a hydraulic station system in some embodiments of the present invention. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0020] In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "transverse," "longitudinal," "top," "bottom," "inner," "outer," and "circumferential" and the like, indicating directions or positions, are based on the directions or positions shown in the accompanying drawings. The interpretation of such terms should be based on the perspective of persons skilled in the art.

[0021] In the present invention, unless otherwise expressly defined or limited, terms such as "disposed," "installed," "connected," "connected," and "fixed" should be broadly understood from the perspective of those skilled in the art. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; "connected" may refer to a direct connection or an indirect connection through an intermediate medium, and may refer to internal communication between two elements or an interaction between two elements, unless otherwise expressly defined. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0022] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0023] Figure 1 Schematic diagram of the hydraulic station system structure in some embodiments of the present invention. Figure 2Schematic diagram of the structure of a multifunctional oil tank of a hydraulic station system in some embodiments of the present invention.

[0024] refer to Figure 1 and Figure 2 In some embodiments, a hydraulic station system is provided, which includes: a multi-function oil tank 100, a first oil supply pipeline 200, a second oil supply pipeline 300, a first oil return pipeline 400, and a second oil return pipeline 500.

[0025] The first oil supply pipeline 200 includes a first oil pump 201 , a first oil supply check valve 202 , and a first oil supply ball valve 203 .

[0026] The second oil supply pipeline 300 includes a second oil pump 301 , a second oil supply check valve 302 , and a second oil supply ball valve 303 .

[0027] The first oil return pipeline 400 includes a first oil return check valve 401 and a first oil return ball valve 402 .

[0028] The second oil return pipeline 500 includes a second oil return check valve 501 and a second oil return ball valve 502 .

[0029] The multifunctional oil tank 100 includes a cavity 101 and an outer shell 102, the outer shell includes a top plate 103, a partition 104 is provided in the cavity, and a gap is provided between the partition 104 and the top plate 103; the partition separates the cavity into a first oil chamber 1011 and a second oil chamber 1012, and the first oil chamber and the second oil chamber are connected through the gap.

[0030] The first oil supply pipeline and the first oil return pipeline are connected to the first oil chamber.

[0031] The second oil supply pipeline and the second oil return pipeline are connected to the second oil chamber.

[0032] The first oil supply pipeline and the second oil supply pipeline are both connected to the oil inlet chamber of the actuator 1000 , and the first oil return pipeline and the second oil return pipeline are both connected to the oil return chamber of the actuator.

[0033] In the embodiment of the present application, a redundant design is achieved by adopting a multi-functional oil tank, a first oil supply pipeline, a second oil supply pipeline, a first oil return pipeline, and a second oil return pipeline, and normal oil supply can be maintained even when the multi-functional oil tank or the pipeline is damaged.

[0034] Specifically, in the initial state, the first oil chamber and the second oil chamber of the multifunctional oil tank are intact (e.g. Figure 2(as shown). At this point, the hydraulic oil in the first and second oil chambers is connected, and the hydraulic oil in the first and second oil chambers of the multi-function oil tank is integrated. At this point, oil can be supplied through either the first or second oil supply line, or both. Oil can be returned through either the first or second oil return line, or both.

[0035] When the first oil supply line is supplying oil, the first oil supply ball valve is open. When the second oil supply line is supplying oil, the second oil supply ball valve is open. When the first and second oil supply lines are supplying oil simultaneously, both the first and second oil supply ball valves are open. Correspondingly, the first and second oil pumps are in the open state.

[0036] When returning oil, the first oil return ball valve and / or the second oil return ball valve on the first oil return pipeline and / or the second oil return pipeline are opened.

[0037] When the first oil chamber or the first oil supply pipeline is damaged, the corresponding first oil supply ball valve and the first oil return ball valve may be closed.

[0038] When the second oil chamber or the second oil supply pipeline is damaged, the corresponding second oil supply ball valve and second oil return ball valve can be closed.

[0039] In some embodiments, a third oil supply ball valve 601 is provided between the first oil supply pipeline and the second oil supply pipeline, a first end of the third oil supply ball valve is connected between the first oil supply one-way valve and the first oil supply ball valve, and a second end of the third oil supply ball valve is connected between the second oil supply one-way valve and the second oil supply ball valve.

[0040] In the embodiment of the present application, by adopting the third oil supply ball valve, the communication between the first oil supply pipeline and the second oil supply pipeline can be achieved.

[0041] In some embodiments, in an initial state, the first oil chamber and the second oil chamber of the multi-function oil tank are intact. At this time, the third oil supply ball valve can remain normally open.

[0042] When the first oil chamber or the first oil supply pipeline is damaged, the corresponding first oil supply ball valve, the first oil return ball valve, and the third oil supply ball valve may be closed.

[0043] When the second oil chamber or the second oil supply pipeline is damaged, the corresponding second oil supply ball valve, the second oil return ball valve, and the third oil supply ball valve may be closed.

[0044] In some embodiments, the first oil supply pipeline and the second oil supply pipeline have an oil supply connection point 230, which is located at one end of the first oil supply ball valve and the second oil supply ball valve away from the third oil supply ball valve.

[0045] In some embodiments, the first oil return line and the second oil return line have an oil return connection 450 , which is located at one end of the first oil return ball valve and the second oil return ball valve close to the actuator.

[0046] In an embodiment of the present application, by setting an oil supply connection point between the first oil supply pipeline and the second oil supply pipeline, and setting an oil return connection point between the first oil return pipeline and the second oil return pipeline, the interconnection between the first oil supply pipeline and the second oil supply pipeline and the interconnection between the first oil return pipeline and the second oil return pipeline can be fully achieved, thereby ensuring the oil supply and return efficiency.

[0047] In some embodiments, the first oil supply line, the first oil return line, the second oil supply line, and the second oil return line all have filters. Specifically, the first oil supply line, the second oil supply line, the first oil return line, and the second oil return line each have a first filter 901, a second filter 902, a third filter 903, and a fourth filter 904, respectively.

[0048] The first filter is disposed between the first oil pump and the first oil supply one-way valve.

[0049] The second filter is disposed between the second oil pump and the second oil supply one-way valve.

[0050] The third filter is arranged between the first oil return one-way valve and the first oil chamber.

[0051] The fourth filter is disposed between the second oil return one-way valve and the second oil chamber.

[0052] In some embodiments, two circuit switching valves are connected to the first oil supply pipeline; namely, a first overflow unloading valve 801 and a second overflow unloading valve 802, the first ends of the first overflow unloading valve and the second overflow unloading valve are connected between the first oil pump and the first filter, and the second ends of the first overflow unloading valve and the second overflow unloading valve are connected to the first oil chamber.

[0053] Two circuit switching valves are connected to the second oil supply pipeline, namely the third overflow unloading valve 803 and the fourth overflow unloading valve 804. The first ends of the third overflow unloading valve and the fourth overflow unloading valve are connected between the second oil pump and the second filter, and the second ends of the third overflow unloading valve and the fourth overflow unloading valve are connected to the second oil chamber.

[0054] In an embodiment of the present application, two overflow unloading valves are provided for each oil supply line to ensure that the oil supply can proceed normally. In an embodiment of the present application, the first oil supply line and the second oil supply line supply oil at the same time, and the first oil pump and the second oil pump are in operation at the same time and all the time. In the event that the oil supply to one of the oil supply lines is cut off, it is not necessary to directly stop the oil pump of the oil supply line. The high-pressure oil in the oil supply line is directly returned to the multi-function oil tank through the overflow unloading valve. Two overflow unloading valves are provided for each oil supply line, which can further ensure that the return oil is not obstructed through redundant settings.

[0055] In some embodiments, each of the overflow unloading valves is connected to a circuit switching valve, and the circuit switching valve is a two-position two-way solenoid valve (refer to Figure 1 and Figure 3 ).

[0056] The circuit switching valves include a first circuit switching valve 701 , a second circuit switching valve 702 , a third circuit switching valve 703 , and a fourth circuit switching valve 704 .

[0057] One end of the first circuit switching valve is connected to the first overflow unloading valve, and the other end is connected between the first oil pump and the first filter.

[0058] One end of the second circuit switching valve is connected to the second overflow unloading valve, and the other end is connected between the first oil pump and the first filter.

[0059] One end of the third circuit switching valve is connected to the third overflow unloading valve, and the other end is connected between the second oil pump and the second filter.

[0060] One end of the fourth circuit switching valve is connected to the fourth overflow unloading valve, and the other end is connected between the second oil pump and the second filter.

[0061] In an initial state, one of the first circuit switching valve and the second circuit switching valve is in a connecting position, and the other is in a blocking position.

[0062] In an initial state, one of the third circuit switching valve and the fourth circuit switching valve is in a connecting position, and the other is in a blocking position.

[0063] In the embodiments of the present application, determining whether the overflow unloading valve is in an operating state or a standby state is achieved by switching the circuit switching valve between a connection position and a cutoff position. When the circuit switching valve is in the connection position, the corresponding overflow unloading valve is in an operating state. When the circuit switching valve is in the cutoff position, the corresponding overflow unloading valve is in a standby state.

[0064] In the embodiments of the present application, in the initial state, one of the first and second relief unloading valves is in operation, while the other is in standby. For example, if the first circuit switching valve is in the connecting position and the second circuit switching valve is in the blocking position, the first relief unloading valve is in operation while the second relief unloading valve is in standby. If the first relief unloading valve fails, the second circuit switching valve is activated and switched to the connecting position, and the second relief unloading valve is switched to the operating state. This ensures safe oil return.

[0065] In some embodiments, the first oil chamber and the second oil chamber are both provided with a liquid level gauge and / or a liquid temperature gauge. In the embodiments of the present application, by providing the liquid level gauge and / or the liquid temperature gauge, the state of the multifunctional oil tank can be determined.

[0066] In some embodiments, the first oil chamber is equipped with a first liquid level gauge 1013, and the second oil chamber is equipped with a second liquid level gauge 1014. The first liquid level gauge 1013 and the second liquid level gauge 1014 are used to determine whether the first and second oil chambers of the multi-function oil tank are damaged, respectively. If the hydraulic oil level reported by the liquid level gauge is lower than a first preset height value, the corresponding oil chamber is determined to be leaking, possibly indicating damage to the outer casing. Accordingly, the corresponding oil supply and return lines are closed. The first preset height value is lower than the initial hydraulic oil level.

[0067] For example, if the hydraulic oil height feedback from the first liquid level gauge is lower than a first preset height value, it is determined that the corresponding first oil chamber is leaking, and the housing corresponding to the first oil chamber may be damaged. In this case, the first oil supply line and the first oil return line corresponding to the first oil chamber are closed. Specifically, the first oil supply ball valve, the first oil return ball valve, and the third oil supply ball valve can be closed. If the hydraulic oil height feedback from the second liquid level gauge is lower than the first preset height value, it is determined that the corresponding second oil chamber is leaking, and the housing corresponding to the second oil chamber may be damaged. In this case, the second oil supply ball valve, the second oil return ball valve, and the third oil supply ball valve can be closed.

[0068] In some embodiments, the first oil chamber is provided with a first liquid temperature gauge 1015, and the second oil chamber is provided with a second liquid temperature gauge 1016. The first and second liquid temperature gauges 1015, 1016 respectively determine whether the first and second oil chambers of the multi-function oil tank are at high temperatures. If the hydraulic oil temperature reported by the liquid temperature gauges exceeds a first preset temperature value, the corresponding oil chamber is determined to be at high temperature, possibly indicating fire damage to the housing. Accordingly, the corresponding oil supply and return lines are closed.

[0069] For example, if the hydraulic oil temperature feedback from the first thermometer is higher than a first preset temperature value, the corresponding first oil chamber is determined to be in a high-temperature state and unsuitable for further oil supply. Therefore, the first oil supply line and the first oil return line corresponding to the first oil chamber are closed. Specifically, the first oil supply ball valve, the first oil return ball valve, and the third oil supply ball valve can be closed. If the hydraulic oil temperature feedback from the second thermometer is higher than the first preset temperature value, the corresponding second oil chamber is determined to be in a high-temperature state. Therefore, the second oil supply ball valve, the second oil return ball valve, and the third oil supply ball valve can be closed.

[0070] In some embodiments, the multi-function tank has a cavity height of Hq. The multi-function tank contains hydraulic oil. When the multi-function tank is horizontal, the initial height of the hydraulic oil is Hy, and the height of the partition is Hg. The initial height of the hydraulic oil refers to the height of the multi-function tank in its initial state, i.e., the initial height of the hydraulic oil supplied to the multi-function tank when the multi-function tank, piping, and entire hydraulic station system are intact.

[0071] In some embodiments, the cavity height Hq of the multifunctional oil tank, the initial height Hy of the hydraulic oil, and the height Hg of the partition satisfy the following relationship: When the multifunctional oil tank is in a horizontal state, Hq>Hy>Hg.

[0072] refer to Figure 4 In some embodiments, the first and second oil chambers have first and second oil unloading ports 105 and 106, respectively. The first and second oil unloading ports are disposed on the corresponding sump housings of the first and second oil chambers. Hydraulic oil in the first oil chamber can be discharged through the first oil unloading port 105. Hydraulic oil in the second oil chamber can be discharged through the second oil unloading port 106.

[0073] In an embodiment of the present application, if the hydraulic oil temperature feedback from the first liquid thermometer is higher than a first preset temperature value, the corresponding first oil chamber is determined to be in a high-temperature state and unsuitable for further oil supply, and the first oil supply line and first oil return line corresponding to the first oil chamber are closed. Specifically, the first oil supply ball valve, the first oil return ball valve, and the third oil supply ball valve can be closed. At the same time, the first oil unloading port is opened to discharge the hydraulic oil in the first oil chamber to prevent the excessive oil temperature from posing a threat to the multi-function oil tank. In this case, only the second oil chamber, the second oil supply line, and the second oil return line are used for operation.

[0074] If the hydraulic oil temperature reported by the second thermometer exceeds the first preset temperature, the corresponding second oil chamber is determined to be at a high temperature. The corresponding second oil supply and return lines are then closed. Specifically, the second oil supply and return ball valves, as well as the third oil supply ball valve, can be closed. Simultaneously, the second oil discharge port is opened to drain the hydraulic oil from the second oil chamber, preventing the high oil temperature from posing a threat to the multi-function oil tank. In this situation, only the first oil chamber, first oil supply, and first return lines are used for operation.

[0075] In some embodiments, the outer shell and partitions of the multifunctional fuel tank are made of fireproof and heat-insulating materials, which further ensures the safety of the multifunctional fuel tank.

[0076] Some embodiments of the present application further provide a hydraulic control method, wherein the hydraulic control method uses the hydraulic system as described above to hydraulically control the actuator, and the hydraulic control method includes: Under normal conditions, the first oil supply ball valve, the second oil supply ball valve, the third oil supply ball valve, the first oil return ball valve, and the second oil return ball valve are all open, and oil is supplied to the actuator through the first oil supply pipeline and / or the second oil supply pipeline; When the first oil chamber leaks oil, the first oil return ball valve is closed, and oil is returned through the second oil return pipeline; When the second oil chamber leaks oil, the second oil return ball valve is closed, and the oil is returned through the first oil return pipeline.

[0077] It is understood that in the method embodiments of the present application, the above-mentioned hydraulic system can be used to hydraulically control the actuator, and the specific control method of the above-mentioned hydraulic system can be used as a step or feature in some embodiments of the hydraulic control method of the present application. No further enumeration is given here.

[0078] It will be easily understood by those skilled in the art that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hydraulic station system, characterized in that: The hydraulic station system includes: a multifunctional oil tank, a first oil supply pipeline, a second oil supply pipeline, a first oil return pipeline, and a second oil return pipeline; The first oil supply pipeline includes a first oil pump, a first oil supply one-way valve, and a first oil supply ball valve; The second oil supply pipeline includes a second oil pump, a second oil supply one-way valve, and a second oil supply ball valve; The first oil return pipeline includes a first oil return one-way valve and a first oil return ball valve; The second oil return pipeline includes a second oil return one-way valve and a second oil return ball valve; The multifunctional oil tank includes a cavity and an outer shell, the outer shell includes a top plate, a partition is provided in the cavity, and a gap is formed between the partition and the top plate; the partition divides the cavity into a first oil chamber and a second oil chamber, and the first oil chamber and the second oil chamber are connected through the gap; The first oil supply pipeline and the first oil return pipeline are connected to the first oil chamber; The second oil supply pipeline and the second oil return pipeline are connected to the second oil chamber; The first oil supply pipeline and the second oil supply pipeline are both connected to the oil inlet chamber of the actuator, and the first oil return pipeline and the second oil return pipeline are both connected to the oil return chamber of the actuator.

2. The hydraulic station system according to claim 1, characterized in that: A third oil supply ball valve is provided between the first oil supply pipeline and the second oil supply pipeline, the first end of the third oil supply ball valve is connected between the first oil supply one-way valve and the first oil supply ball valve, and the second end of the third oil supply ball valve is connected between the second oil supply one-way valve and the second oil supply ball valve.

3. The hydraulic station system according to claim 2, characterized in that: The first oil supply pipeline, the second oil supply pipeline, the first oil return pipeline, and the second oil return pipeline are respectively provided with a first filter, a second filter, a third filter, and a fourth filter; The first filter is arranged between the first oil pump and the first oil supply one-way valve; The second filter is arranged between the second oil pump and the second oil supply one-way valve; The third filter is arranged between the first oil return one-way valve and the first oil chamber; The fourth filter is disposed between the second oil return one-way valve and the second oil chamber.

4. The hydraulic station system according to claim 3, characterized in that: Two overflow unloading valves are connected to the first oil supply pipeline, namely a first overflow unloading valve and a second overflow unloading valve, wherein the first ends of the first overflow unloading valve and the second overflow unloading valve are connected between the first oil pump and the first filter, and the second ends of the first overflow unloading valve and the second overflow unloading valve are connected to the first oil chamber; Two overflow unloading valves are connected to the second oil supply pipeline, namely the third overflow unloading valve and the fourth overflow unloading valve. The first ends of the third overflow unloading valve and the fourth overflow unloading valve are connected between the second oil pump and the second filter, and the second ends of the third overflow unloading valve and the fourth overflow unloading valve are connected to the second oil chamber.

5. The hydraulic station system according to claim 4, characterized in that: Each of the overflow unloading valves is connected to a circuit switching valve, and the circuit switching valve is a two-position two-way solenoid valve.

6. The hydraulic station system according to claim 5, characterized in that: The circuit switching valve includes a first circuit switching valve, a second circuit switching valve, a third circuit switching valve, and a fourth circuit switching valve; One end of the first circuit switching valve is connected to the first overflow unloading valve, and the other end is connected between the first oil pump and the first filter; One end of the second circuit switching valve is connected to the second overflow unloading valve, and the other end is connected between the first oil pump and the first filter; One end of the third circuit switching valve is connected to the third overflow unloading valve, and the other end is connected between the second oil pump and the second filter; One end of the fourth circuit switching valve is connected to the fourth overflow unloading valve, and the other end is connected between the second oil pump and the second filter; In an initial state, one of the first circuit switching valve and the second circuit switching valve is in a connecting position, and the other is in a blocking position; In an initial state, one of the third circuit switching valve and the fourth circuit switching valve is in a connecting position, and the other is in a blocking position.

7. The hydraulic station system according to claim 6, characterized in that: The first oil chamber and the second oil chamber are both provided with a liquid level gauge and a liquid temperature gauge.

8. The hydraulic system according to claim 7, characterized in that: The cavity height of the multifunctional oil tank is Hq, the multifunctional oil tank contains hydraulic oil, when the multifunctional oil tank is in a horizontal state, the initial height of the hydraulic oil is Hy, and the height of the partition is Hg; The cavity height Hq of the multifunctional oil tank, the initial height Hy of the hydraulic oil, and the height Hg of the partition satisfy the following relationship: When the multifunctional oil tank is in a horizontal state, Hq>Hy>Hg.

9. A hydraulic control method, characterized in that: The hydraulic control method uses the hydraulic system according to claim 8 to perform hydraulic control on the actuator.

10. The hydraulic control method according to claim 9, characterized in that: The hydraulic control method includes: Under normal conditions, the first oil supply ball valve, the second oil supply ball valve, the third oil supply ball valve, the first oil return ball valve, and the second oil return ball valve are all open, and oil is supplied to the actuator through the first oil supply pipeline and / or the second oil supply pipeline; When the first oil chamber leaks oil, the first oil return ball valve is closed, and oil is returned through the second oil return pipeline; When the second oil chamber leaks oil, the second oil return ball valve is closed, and the oil is returned through the first oil return pipeline.

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