Hydraulic system of embedded plough and embedded plough

Abstract

The utility model relates to the technical field of ocean equipment, and particularly discloses a hydraulic system of an embedded plow and the embedded plow, the hydraulic system of the embedded plow is matched with a reversing valve, a balance valve group and a floating valve group through a reversing valve, when a hydraulic control system is in a locking state, an oil path of the floating valve group is not communicated, and the oil path of the floating valve group is not communicated; the balance valve group locks the position of an action piece in the execution piece, so that the action piece is kept at the current position, and at the moment, the jet cutter or the dragging frame is kept in the current locking state; when the hydraulic control system is in a floating state, the balance valve group is not communicated with the oil way, the floating valve group enables the oil way of the first cavity and the oil way of the second cavity of the executing part to be communicated, the acting part in the executing part is in a floating state, and at the moment, the spraying cutter or the dragging frame is in a floating state. When the dragging frame is in a floating state, the angle can be passively adjusted along with the distance between the power boat and the burying plough, and when the jet cutter is in a floating state, the jet cutter can be automatically lifted when encountering an obstacle to avoid the obstacle.

Description

Technical Field

[0001] This utility model relates to the field of marine equipment technology, and in particular to a hydraulic system for burying a plow and the plow itself. Background Technology

[0002] The burying plough is a common underwater trenching and cable-laying robot, which typically has two basic actions: adjusting the towing angle and raising and lowering the spray cutter. During a single engineering operation, these two actions sometimes need to be locked, and sometimes they need to be floated. For example, Chinese Patent CN221193503U discloses a jet-driven towed burial plow, which includes a front skid, a plow blade (also called a jetting blade), a lifting and traction frame (also called a towing frame), and a high-pressure water spraying mechanism, all mounted on a chassis frame. The front of the chassis frame has a flared cable guide port, and the rear of the chassis frame has symmetrically arranged rear stabilizing plates on both sides. The front skid is swayably positioned below the front of the chassis frame. The chassis frame also has a rotatable cable-pressing rod. The rear of the plow blade has a grooved channel for the cable to pass through, and the cable-pressing rod can be embedded in the grooved channel to prevent the cable from detaching. The rear stabilizing plate is located above and behind the front skid. The overall structure is simple and practical, allowing for flexible and convenient adjustment of the soil-breaking method and capacity during long-distance laying of deep-sea optical cables. This accommodates the complexity and diversity of soil structures, effectively ensuring cable burial depth and post-burial quality, greatly reducing energy consumption, and significantly improving operational efficiency. However, how to control the towing frame and spraying blade of the burial plow to lock and float as needed through a hydraulic system is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0003] This invention aims to solve the technical problems existing in the prior art by providing a hydraulic system capable of controlling the towing frame and spraying blade of a burial plow to lock and float at different times. It also provides a burial plow equipped with this hydraulic control system.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] The hydraulic system for burying a plow according to this utility model includes a power source, a reversing valve, a balance valve assembly, and a floating valve assembly. The power source and the reversing valve are connected through pipelines and are used to provide power to the hydraulic system. The reversing valve has three working positions: left, middle, and right. The reversing valve is connected to the balance valve assembly and a first oil tank through pipelines, and the left and right positions are used to switch the direction of oil flow. The balance valve assembly is connected to the first and second chambers of the actuator through pipelines. The reversing valve switches the direction of oil flow to control the inlet or outlet of oil in the first and second chambers, thereby controlling the reciprocating motion of the actuator. The floating valve assembly is connected in parallel with the balance valve assembly through pipelines, and the floating valve assembly is also connected to the first chamber, the second chamber, and the first oil tank of the actuator through pipelines.

[0006] When the hydraulic system is in the locked state, the directional valve is in the neutral position, the oil circuit of the floating valve group is blocked, and the position of the actuator in the actuator is locked by the balance valve group, so that the actuator remains in the current position; when the hydraulic control system is in the floating state, the directional valve is in the neutral position, the oil circuit of the balance valve group is blocked, and the oil circuit of the floating valve group is open, so that the oil circuits of the first chamber and the second chamber of the actuator are connected, and the actuator in the actuator is in a floating state.

[0007] The hydraulic control system of the burying plow described in this utility model, through the cooperation of a reversing valve, a balance valve group, and a floating valve group, allows the following operation: When the hydraulic control system is in a locked state, the oil circuit of the floating valve group is blocked, and the balance valve group locks the position of the actuator in the actuator, keeping the actuator in its current position. At this time, the spraying blade or towing frame will remain in the current locked state. When the hydraulic control system is in a floating state, the oil circuit of the balance valve group is blocked, and the floating valve group connects the oil circuits of the first chamber and the second chamber of the actuator. The actuator in the actuator is in a floating state, and the spraying blade or towing frame will be in a floating state. When the towing frame is in a floating state, it can passively adjust its angle according to the distance between the power vessel and the burying plow. When the spraying blade is in a floating state, it can automatically lift up when it encounters an obstacle to avoid it.

[0008] Furthermore, the balancing valve assembly includes a first one-way balancing valve and a second one-way balancing valve. The reversing valve is connected to the first one-way balancing valve via a pipeline, and the first one-way balancing valve is connected to the first chamber of the actuator via a pipeline. The reversing valve is also connected to the second one-way balancing valve via a pipeline, and the second one-way balancing valve is connected to the second chamber of the actuator via a pipeline.

[0009] Furthermore, the floating valve assembly includes a first solenoid valve and a second solenoid valve, which are connected by a pipeline. The pipeline connecting the first hydraulic directional valve and the second hydraulic directional valve is also connected to the first oil tank pipeline. The first solenoid valve is connected by a pipeline to the first chamber of the actuator and the first one-way balance valve, respectively. The second solenoid valve is connected by a pipeline to the second chamber of the actuator and the second one-way balance valve, respectively. When the hydraulic control system is in a locked state, both the first and second solenoid valves are in a closed state. When the hydraulic control system is in a floating state, both the first and second solenoid valves are in an oil passage flow state.

[0010] Furthermore, the first solenoid valve includes port A1 and port T1, and the second solenoid valve includes port B1 and port T2. Port A1 of the first solenoid valve is connected to the first one-way balance valve and the first chamber of the actuator via a pipeline. Port T1 of the first solenoid valve is connected to the first oil tank via a pipeline. Port B1 of the second solenoid valve is connected to the second one-way balance valve and the second chamber of the actuator via a pipeline. Port T2 of the second solenoid valve is connected to the first oil tank via a pipeline. When the hydraulic system is in a floating state, both the first and second solenoid valves are in a flowing state. When the hydraulic system is in a locked state, both the first and second solenoid valves are in a closed state.

[0011] Furthermore, a damping orifice is provided at the return port of the floating valve assembly.

[0012] Furthermore, both the first one-way balancing valve and the second one-way balancing valve are pilot-operated one-way balancing valves.

[0013] Furthermore, the power source is a hydraulic pump, gear pump, vane pump, or piston pump.

[0014] Furthermore, the directional valve is a three-position four-way directional valve.

[0015] Furthermore, the actuator is a hydraulic cylinder, the first chamber is a rodless chamber, the second chamber is a rod chamber, and the actuating element is a piston rod.

[0016] The present invention discloses a burial plow, which includes a burial plow body and two sets of hydraulic systems for the burial plow. One set of hydraulic systems controls the movement of the towing frame actuator in the burial plow body between telescopic movement, locked state, and floating state. The other set of hydraulic systems controls the movement of the spraying blade actuator in the burial plow body between telescopic movement, locked state, and floating state.

[0017] Because the burial plow described in this utility model has the aforementioned hydraulic system, both the towing frame and the spraying blade need to be locked when the burial plow is lowered from the power vessel to prevent instability during the lowering process and to prevent the burial plow from swaying around the towing frame. After the burial plow reaches the seabed, trenching and cable laying operations need to begin. At this time, both the towing frame and the spraying blade need to remain floating. Keeping the towing frame floating allows it to passively adjust its angle according to the distance between the power vessel and the burial plow. Keeping the spraying blade floating allows it to automatically lift itself when it encounters an obstacle, avoiding the obstacle and preventing damage to the spraying blade. Attached Figure Description

[0018] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this invention.

[0019] Figure 1 A schematic diagram of the structure for burying a plow.

[0020] Figure 2-4 This is a hydraulic schematic diagram showing different implementations of the hydraulic system for embedding the plow in this utility model. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings.

[0022] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0026] This utility model provides a specific implementation of a hydraulic system for embedding a plow, see [link to relevant documentation]. Figure 1-4 The system includes a power source 12, a directional valve 14, a balance valve assembly, and a floating valve assembly. The power source 12 is connected to the directional valve 14 via a pipeline and is used to provide power to the hydraulic system. The directional valve 14 has three working positions: left, middle, and right. The directional valve 14 is connected to the balance valve assembly and the first oil tank 21 via pipelines, and the left and right positions are used to switch the direction of oil flow. The balance valve assembly is connected to the first chamber 23 and the second chamber 24 of the actuator 4 via pipelines. The directional valve 14 switches the direction of oil flow to control the inlet or outlet of oil in the first chamber 23 and the second chamber 24, thereby controlling the actuator 22 in the actuator 4. Reciprocating motion; the floating valve group and the balance valve group are connected in parallel through pipelines, and the floating valve group is also connected to the first chamber 23, the second chamber 24 and the first oil tank 21 of the actuator 4 through pipelines respectively; when the hydraulic system is in the locked state, the directional valve 14 is in the neutral position, the oil circuit of the floating valve group is blocked, and the balance valve group locks the position of the actuator 22 in the actuator 4, so that the actuator 22 is kept in the current position; when the hydraulic control system is in the floating state, the directional valve 14 is in the neutral position, the oil circuit of the balance valve group is blocked, and the oil circuit of the floating valve group is open, so that the oil circuits of the first chamber 23 and the second chamber 24 of the actuator 4 are connected, and the actuator 22 in the actuator 4 is in a floating state.

[0027] In the preferred embodiment, see Figure 2-4The balancing valve assembly includes a first one-way balancing valve 18 and a second one-way balancing valve 25. A reversing valve 14 is connected to the first one-way balancing valve 18 via a pipeline. The first one-way balancing valve 18 is connected to the first chamber 23 of the actuator 4 via a pipeline. The reversing valve 14 is also connected to the second one-way balancing valve 25 via a pipeline. The second one-way balancing valve 25 is connected to the second chamber 24 of the actuator 4 via a pipeline. Specifically, the reversing valve 14 is a three-position four-way reversing valve 14, which has an inlet port P, a return port T, a working port A, and a working port B. The inlet port P of the reversing valve 14 is connected to the power source 12 through a pipeline, and the return port T of the reversing valve 14 is connected to the first oil tank 21 through a pipeline. When the reversing valve 14 is in the neutral position, the working port A of the reversing valve 14 is connected to the working port B, and the working port B is also connected to the return port T. The first one-way balance valve 18 and the second one-way balance valve 25 are both pilot-operated one-way balance valves. The oil port A2 of the first one-way balance valve 18 is connected to the power source 12 through a pipeline. The working port A of the directional valve 14 is connected to the first chamber 23 of the actuator 4 via a pipeline. The control port K1 of the first directional valve 18 is connected to the working port B of the directional valve 14 via a pipeline. The port B2 of the second directional valve 25 is connected to the working port B of the directional valve 14 via a pipeline. The port B3 of the second directional valve 25 is connected to the second chamber 24 of the actuator 4 via a pipeline. The control port K2 of the second directional valve 25 is connected to the working port A of the directional valve 14 via a pipeline.

[0028] In the preferred embodiment, see Figure 2-4The floating valve assembly includes a first solenoid valve 17 and a second solenoid valve 26. The first solenoid valve 17 and the second solenoid valve 26 are connected by a pipeline, and the pipeline used to connect the first hydraulic directional valve 14 and the second hydraulic directional valve 14 is also connected to the pipeline of the first oil tank 21. The first solenoid valve 17 is connected by a pipeline to the first chamber 23 of the actuator 4 and the first one-way balance valve 18, respectively. The second solenoid valve 26 is connected by a pipeline to the second chamber 24 of the actuator 4 and the second one-way balance valve 25, respectively. When the hydraulic control system is in the locked state, both the first solenoid valve 17 and the second solenoid valve 26 are in the closed state. When the hydraulic control system is in the floating state, both the first solenoid valve 17 and the second solenoid valve 26 are in the oil passage flow state. Specifically, the first solenoid valve 17 includes port A1 and port T1, and the second solenoid valve 26 includes port B1 and port T2. Port A1 of the first solenoid valve 17 is connected to port A3 of the first one-way balance valve 18 and the first chamber 23 of the actuator 4 via pipelines. Port T1 of the first solenoid valve 17 is connected to the first oil tank 21 via pipelines. Port B1 of the second solenoid valve 26 is connected to port B3 of the second one-way balance valve 25 and the second chamber 24 of the actuator 4 via pipelines. Port T2 of the second solenoid valve 26 is connected to the first oil tank 21 via pipelines. When the hydraulic system is in a floating state, both the first solenoid valve 17 and the second solenoid valve 26 are in a flowing state. When the hydraulic system is in a locked state, both the first solenoid valve 17 and the second solenoid valve 26 are in a closed state.

[0029] In the preferred embodiment, see Figure 4 A damping orifice 27 is provided at the return port of the floating valve group. Specifically, in this embodiment, the damping orifice is provided on the pipeline connecting the first solenoid valve 17 and the second solenoid valve 26. By providing the damping orifice, the resistance is increased. When the hydraulic system is used to control the spraying blade 5, when the spraying blade 5 is in a floating state, the spraying blade 5 can be lifted according to the resistance. For obstacles with low resistance, the spraying blade 5 does not need to be lifted.

[0030] In the preferred embodiment, see Figure 2-4 The power source 12 is a hydraulic pump, gear pump, vane pump or piston pump.

[0031] The actuator 4 is a hydraulic cylinder, the first chamber 23 is a rodless chamber, the second chamber 24 is a rod chamber, and the actuating element 22 is a piston rod.

[0032] This utility model provides specific implementation methods for three hydraulic systems for laying plows, see [link to relevant documentation]. Figure 2-4 The control methods for the hydraulic systems of five types of burying plows are now described with reference to the attached diagrams:

[0033] See Figure 2In this embodiment, when the actuator 22 of the actuator 4 needs to be controlled to extend or retract, the power source 12 is activated. The first solenoid valve 17 and the second solenoid valve 26 are both de-energized, i.e., in the off state. The directional valve 14 is energized and moves, switching back and forth between the left and right positions to cause the actuator 22 to reciprocate. When the directional valve 14 is in the right position, its inlet P is connected to the working port A, and its return port T is connected to the working port B. Hydraulic oil flows through the inlet P of the directional valve 14 to the working port A, then through the pipeline to the port A2 of the first one-way balance valve 18 in the balance valve assembly, and finally to the... A portion of the hydraulic oil at port A2 of the first one-way balance valve 18 flows through a pipeline to the control port K2 of the second one-way balance valve 25. When the valve core movement pressure of the second one-way balance valve 25 is reached, the sequence valve portion of the second one-way balance valve 25 can pass through the oil circuit. The remaining portion flows through the pipeline containing the one-way valve in the first one-way balance valve 18 to port A3 of the first one-way balance valve 18, and then flows through a pipeline into the first chamber 23 of the actuator 4, causing the actuating element 22 to extend. Meanwhile, the hydraulic oil in the second chamber 24 of the actuator 4 flows through a pipeline to port B3 of the second one-way balance valve 25, and then through the second one-way balance valve... The hydraulic oil flows out of the second one-way balance valve 25 via the sequence valve 25, then through the working port B of the directional valve 14 to the return port T, and finally into the first oil tank 21. When the directional valve 14 is in the left position, the inlet port P of the directional valve 14 is connected to the working port B, and the return port T is connected to the working port A. The hydraulic oil flows through the inlet port P of the directional valve 14 to the working port B, and then through the pipeline to the port B2 of the second one-way balance valve 25 in the balance valve group. A portion of the hydraulic oil flowing to the port B2 of the second one-way balance valve 25 flows through the pipeline to the control port K1 of the first one-way balance valve 18. When the valve core of 18 moves under pressure, part of the sequence valve of the first one-way balance valve 18 can pass through the oil circuit, and the rest flows through the pipeline where the one-way valve in the second one-way balance valve 25 is located to the oil port B3 of the second one-way balance valve 25, and then flows through the pipeline into the second chamber 24 of the actuator 4, causing the actuator 22 to retract. The hydraulic oil in the first chamber 23 of the actuator 4 flows through the pipeline to the oil port A3 of the first one-way balance valve 18, and flows out of the first one-way balance valve 18 through part of the sequence valve of the first one-way balance valve 18, and then flows through the working oil port A of the reversing valve 14 to the return oil port T, and finally flows into the first oil tank 21.When the position of the actuator 22 is adjusted by the telescopic movement and it needs to be locked to maintain its current position, while the power source 12 remains open, the directional valve 14 moves to the neutral position. At this time, the oil inlet P of the directional valve 14 is in the closed state, the working oil ports A and B of the directional valve 14 are connected, and the working oil port B and the return oil port T are connected. The oil passage at the sequence valve in the first one-way balance valve 18 and the oil passage at the sequence valve in the second one-way balance valve 25 are blocked, thereby causing the first chamber 23 and the second chamber in the actuator 4 to be blocked. The oil pressure at 24 is equal, thus keeping the actuator 22 in its current position and locked. When the actuator 22 needs to float, the directional valve 14 is also in the neutral position, and the first solenoid valve 17 and the second solenoid valve 26 are energized. At this time, both the first solenoid valve 17 and the second solenoid valve 26 are in the oil passage flow state, connecting the oil port A1 and oil port T1 of the first solenoid valve 17, and connecting the oil port B1 and oil port T2 of the second solenoid valve 26. This connects the first chamber 23 and the second chamber 24 of the actuator 4, thereby allowing the actuator 22 to float.

[0034] See Figure 3 This implementation method is similar to Figure 2 The difference in the implementation method lies in the state of the first solenoid valve 17 and the second solenoid valve 26. When it is necessary to make the actuator 22 reciprocate or lock the actuator 22 in a certain position, both the first solenoid valve 17 and the second solenoid valve 26 are energized. At this time, the oil port A1 and oil port T1 of the first solenoid valve 17 are not connected, and the oil port B1 and oil port T2 of the second solenoid valve 26 are not connected, that is, they are in the closed state. When it is necessary to make the actuator 22 float, the first solenoid valve 17 and the second solenoid valve 26 are de-energized. At this time, the oil port A1 and oil port T1 of the first solenoid valve 17 are connected, and the oil port B1 and oil port T2 of the second solenoid valve 26 are connected, that is, they are in the oil passage flow state.

[0035] See Figure 4 In this implementation method, it is in Figure 2 The damping orifice was added to the original embodiment; the rest is as described above. Figure 2 Examples are shown in the text.

[0036] This utility model also provides a specific embodiment of a burial plow, including a burial plow body 6. The structure of the burial plow body 6 in this embodiment is prior art. Reference can be made to a jet-driven towed burial plow disclosed in Chinese Patent CN221193503U, or to this utility model. Figure 1The burial plow in this invention is also existing technology, and the structure of the burial plow body 6 is not the inventive point of this utility model. The burial plow body 6 includes a towing frame 8, a towing frame actuator 7, a spraying blade 5, and a spraying blade actuator 4. The actuator of the towing frame actuator 7 is connected to the towing frame 8 and is used to drive the towing frame 8 to swing. The actuator of the spraying blade actuator 4 is connected to the spraying blade 5 and is used to drive the towing frame 8 to swing. The burial plow also includes two sets of hydraulic control systems for the above-mentioned burial plow. One set of hydraulic control system is used to control the actuator of the towing frame actuator 7 to switch between extension and retraction, locked state, and floating state. The other set of hydraulic control system is used to control the actuator of the spraying blade actuator 4 to switch between extension and retraction, locked state, and floating state. Because of the hydraulic system of the burial plow, both the towing frame 8 and the spray cutter 5 need to be locked when the burial plow body 6 is lowered from the power vessel 1. For example, the towing frame 8 should be perpendicular to the burial plow body 6 to prevent the burial plow from being unstable during lowering and to prevent the burial plow from swaying around the towing frame 8. After the burial plow reaches the seabed 3, trenching and cable laying operations need to be started. At this time, both the towing frame 8 and the spray cutter 5 need to be kept floating. Keeping the towing frame 8 floating allows it to passively adjust its angle as the distance between the power vessel 1 and the burial plow changes. Keeping the spray cutter 5 floating allows it to automatically lift when it encounters an obstacle to avoid it and prevent damage to the spray cutter 5.

[0037] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A hydraulic system for burying a plow, comprising a power source, a directional valve, a balance valve assembly, and a floating valve assembly; the power source and the directional valve are connected via pipelines and are used to provide power to the hydraulic system; the directional valve has three working positions: left, middle, and right, and is connected via pipelines to the balance valve assembly and a first oil tank respectively, and the left and right positions are used to switch the direction of oil flow; the balance valve assembly is connected via pipelines to the first and second chambers of the actuator respectively, and the directional valve switches the direction of oil flow to control the inlet or outlet of oil in the first and second chambers, thereby controlling the reciprocating motion of the actuator; the floating valve assembly is connected in parallel with the balance valve assembly via pipelines, and the floating valve assembly is also connected via pipelines to the first chamber, the second chamber, and the first oil tank of the actuator respectively. When the hydraulic system is in the locked state, the directional valve is in the neutral position, the oil circuit of the floating valve group is blocked, and the position of the actuator in the actuator is locked by the balance valve group, so that the actuator remains in the current position; when the hydraulic control system is in the floating state, the directional valve is in the neutral position, the oil circuit of the balance valve group is blocked, and the oil circuit of the floating valve group is open, so that the oil circuits of the first chamber and the second chamber of the actuator are connected, and the actuator in the actuator is in a floating state.

2. The hydraulic system for burying the plow according to claim 1, characterized in that: The balancing valve assembly includes a first one-way balancing valve and a second one-way balancing valve. The reversing valve is connected to the first one-way balancing valve via a pipeline, and the first one-way balancing valve is connected to the first chamber of the actuator via a pipeline. The reversing valve is also connected to the second one-way balancing valve via a pipeline, and the second one-way balancing valve is connected to the second chamber of the actuator via a pipeline.

3. The hydraulic system for burying the plow according to claim 1, characterized in that: The floating valve assembly includes a first solenoid valve and a second solenoid valve. The first and second solenoid valves are connected by a pipeline, and the pipeline connecting the first hydraulic directional valve and the second hydraulic directional valve is also connected to the first oil tank pipeline. The first solenoid valve is connected to the first chamber of the actuator and the first one-way balance valve through a pipeline, and the second solenoid valve is connected to the second chamber of the actuator and the second one-way balance valve through a pipeline. When the hydraulic control system is in a locked state, both the first and second solenoid valves are in a closed state. When the hydraulic control system is in a floating state, both the first and second solenoid valves are in an oil passage flow state.

4. The hydraulic system for burying the plow according to claim 3, characterized in that: The first solenoid valve includes port A1 and port T1, and the second solenoid valve includes port B1 and port T2. Port A1 of the first solenoid valve is connected to the first one-way balance valve and the first chamber of the actuator through a pipeline. Port T1 of the first solenoid valve is connected to the first oil tank through a pipeline. Port B1 of the second solenoid valve is connected to the second one-way balance valve and the second chamber of the actuator through a pipeline. Port T2 of the second solenoid valve is connected to the first oil tank through a pipeline. When the hydraulic system is in a floating state, both the first and second solenoid valves are in a flowing state. When the hydraulic system is in a locked state, both the first and second solenoid valves are in a closed state.

5. The hydraulic system for laying a plow according to any one of claims 1-4, characterized in that: A damping orifice is provided at the return port of the floating valve assembly.

6. The hydraulic system for laying a plow according to any one of claims 2-4, characterized in that: Both the first one-way balancing valve and the second one-way balancing valve are pilot-operated one-way balancing valves.

7. The hydraulic system for laying a plow according to any one of claims 1-4, characterized in that: The power source is a hydraulic pump, gear pump, vane pump, or piston pump.

8. The hydraulic system for laying a plow according to any one of claims 1-4, characterized in that: The reversing valve is a three-position four-way reversing valve.

9. The hydraulic system for laying a plow according to any one of claims 1-4, characterized in that: The actuator is a hydraulic cylinder, the first chamber is a rodless chamber, the second chamber is a rod chamber, and the moving element is a piston rod.

10. A burying plow, comprising a burying plow body, characterized in that: The burial plow also includes two sets of hydraulic control systems for the burial plow as described in any one of claims 1-9. One set of hydraulic control systems is used to control the movement of the towing frame actuator in the burial plow body between telescopic movement, locked state, and floating state. The other set of hydraulic control systems is used to control the movement of the spraying blade actuator in the burial plow body between telescopic movement, locked state, and floating state.

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