Hydraulic control system of embedded plough and embedded plough

Abstract

The utility model relates to the technical field of ocean equipment, and particularly discloses a hydraulic control system of an embedded plow and the embedded plow, the hydraulic control system of the embedded plow is characterized in that through the matching of a reversing valve, a balance valve group and a floating valve group, when the hydraulic control system is in a locking state, the reversing valve is in a middle position, and an 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 reversing valve is in a middle position, 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 towing 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 automatically lift and avoid obstacles when encountering the obstacles.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ocean equipment, especially relates to a hydraulic control system of burying plough and burying plough. BACKGROUND

[0002] The burying plough is a common underwater ditching and cable laying robot, which usually has two basic actions, i.e. towing angle adjustment and jetting knife lifting. In a construction operation, the two actions need to be locked sometimes and need to be floated sometimes. For example, a kind of jetting and towing burying plough disclosed in Chinese patent CN221193503U comprises a front skid, a plough knife (also called jetting knife), a hoisting and towing frame (also called towing frame) and a high-pressure water jet mechanism arranged on a chassis frame, wherein the front end of the chassis frame is provided with a horn-shaped cable guide, the rear end of the chassis frame is symmetrically provided with rear stabilizing slides on both sides, the front skid is swingably arranged below the front end of the chassis frame; the chassis frame is further provided with a rotatable cable pressing rod, the rear end of the plough knife is provided with a groove channel through which the cable passes, the cable pressing rod can be embedded in the groove channel and prevent the cable from separating from the groove channel, the rear stabilizing slides are located above the rear of the front skid, the overall structure is simple and practical, and the soil breaking mode and capacity can be flexibly and conveniently adjusted during long-distance laying of deep-sea optical cable, the complexity and diversification of soil structure are met, the cable burying depth and post-burying quality are effectively ensured, the energy consumption is greatly reduced, and the operation efficiency is greatly improved. However, how to control the towing frame and the jetting knife of the burying plough to be locked and floated according to needs by the hydraulic system is a problem that needs to be solved by those skilled in the art. UTILITY MODEL CONTENTS

[0003] The utility model aims at solving the technical problems existing in the prior art, and provides a hydraulic control system capable of controlling the towing frame and the jetting knife of the burying plough to be locked and floated according to needs. And the burying plough with the hydraulic control system.

[0004] To solve the above technical problems, the utility model provides the following technical scheme:

[0005] The utility model discloses a hydraulic control system of burying plough, including power unit and execution unit, the power unit includes power source and reversing valve, the execution unit includes balance valve group, float valve group and execution piece, the power source is connected with reversing valve through pipeline, and is used for providing power for hydraulic system, the reversing valve includes left, middle and right three working position state, and reversing valve is connected with balance valve group and first oil tank through pipeline respectively, and the transformation of left and right is used for switching oil circuit flow direction, balance valve group is connected with the first chamber and the second chamber of execution piece through pipeline respectively, and the oil circuit flow direction is switched through reversing valve to control the oil inlet or oil outlet in the first chamber and the second chamber, to control the reciprocating motion of the action piece in execution piece, float valve group is connected with balance valve group through pipeline parallelly, and float valve group is also connected with the first chamber, the second chamber of execution piece and second oil tank through pipeline respectively,

[0006] When the hydraulic control system is in the locking state, the float valve group oil circuit is not passed through, and the balance valve group locks the position of the action piece in the execution piece, so that the action piece is kept in the current position, when the hydraulic control system is in the floating state, the balance valve group is not passed through the oil circuit, and the float valve group makes the first chamber and the second chamber oil circuit of the execution piece pass through, and the action piece in the execution piece is in the floating state.

[0007] The utility model discloses a hydraulic control system of burying plough, through the cooperation of reversing valve, balance valve group and float valve group, when the hydraulic control system is in the locking state, the float valve group oil circuit is not passed through, and the balance valve group locks the position of the action piece in the execution piece, so that the action piece is kept in the current position, at this moment, the jet knife or the trailing frame will keep in the current locking state, when the hydraulic control system is in the floating state, the balance valve group is not passed through the oil circuit, and the float valve group makes the first chamber and the second chamber oil circuit of the execution piece pass through, and the action piece in the execution piece is in the floating state, at this moment, the jet knife or the trailing frame will be in the floating state, and the trailing frame can be adjusted angle in the floating state, and the jet knife is in the floating state, and can be lifted when meeting the obstacle, and avoids the obstacle.

[0008] Further, the balance valve group includes first one-way balance valve and second one-way balance valve, the reversing valve is connected with the first one-way balance valve through pipeline, and the first one-way balance valve is connected with the first chamber of execution piece through pipeline, the reversing valve is also connected with the second one-way balance valve through pipeline, and the second one-way balance valve is connected with the second chamber of execution piece through pipeline.

[0009] Further, the floating valve group comprises a first hydraulic control reversing valve and a second hydraulic control reversing valve, the first hydraulic control reversing valve and the second hydraulic control reversing valve are communicated through pipelines, and the pipelines for communicating the first hydraulic control reversing valve and the second hydraulic control reversing valve are also communicated with the second oil tank pipeline; the first hydraulic control reversing valve is communicated with the first chamber of the actuator through a pipeline, and the second hydraulic control reversing valve is communicated with the second chamber of the actuator through a pipeline; when the hydraulic control system is in the locking state, the first hydraulic control reversing valve and the second hydraulic control reversing valve are both in the cut-off state, and when the hydraulic control system is in the floating state, the first hydraulic control reversing valve and the second hydraulic control reversing valve are both in the oil passage flow-through state.

[0010] Further, the first hydraulic control reversing valve and the second hydraulic control reversing valve are also communicated with the power source through pipelines; when the hydraulic control system is in the locking state, the power source is turned on, the reversing valve is in the neutral position, and the first hydraulic control reversing valve and the second hydraulic control reversing valve are switched to the cut-off state; when the hydraulic control system is in the floating state, the power source is turned off, and the first hydraulic control reversing valve and the second hydraulic control reversing valve are switched to the oil passage flow-through state.

[0011] Further, an electromagnetic valve is further included, the first hydraulic control reversing valve and the second hydraulic control reversing valve are both communicated with the electromagnetic valve through pipelines, and the electromagnetic valve is also communicated with the power source through a pipeline; when the hydraulic control system is in the locking state, the reversing valve is in the neutral position, the electromagnetic valve is in the oil passage flow-through state, and the first hydraulic control reversing valve and the second hydraulic control reversing valve are switched to the cut-off state; when the hydraulic control system is in the floating state, the electromagnetic valve is in the cut-off state, and the first hydraulic control reversing valve and the second hydraulic control reversing valve are switched to the oil passage flow-through state.

[0012] Further, the floating valve group comprises a third one-way balance valve and a fourth one-way balance valve, the third one-way balance valve and the fourth one-way balance valve are communicated through pipelines, and the pipelines for communicating the third one-way balance valve and the fourth one-way balance valve are also communicated with the second oil tank pipeline; the third one-way balance valve is communicated with the first chamber of the actuator through a pipeline, and the fourth one-way balance valve is communicated with the second chamber of the actuator through a pipeline; when the hydraulic control system is in the locking state, the third one-way balance valve and the fourth one-way balance valve are both in the cut-off state, and when the hydraulic control system is in the floating state, the third one-way balance valve and the fourth one-way balance valve are both in the oil passage flow-through state.

[0013] Further, the electromagnetic valve is further communicated with the power source through a pipeline; when the hydraulic control system is in the locking state, the reversing valve is in the neutral position, the electromagnetic valve is in the cut-off state, and the third and fourth one-way balance valves are switched to the cut-off state; when the hydraulic control system is in the floating state, the reversing valve is in the neutral position, the electromagnetic valve is in the oil passage flowing state, and the third and fourth one-way balance valves are switched to the oil passage flowing state.

[0014] Further, the power source is a hydraulic pump, a gear pump, a vane pump or a plunger pump.

[0015] Further, the actuator is a hydraulic oil cylinder, the first chamber is a rodless chamber, the second chamber is a rod chamber, and the action part is a piston rod.

[0016] The utility model discloses a bury plough, including bury plough body, bury plough still include two sets of above-mentioned bury plough's hydraulic control system, one set of bury plough's hydraulic control system is used for controlling the action part of the drag frame actuator in bury plough body switches between telescopic action, locking state, floating state, and the other set of bury plough's hydraulic control system is used for controlling the action part of the jet knife actuator in bury plough body switches between telescopic action, locking state, floating state.

[0017] The utility model discloses a bury plough, because of having above-mentioned bury plough's hydraulic control system, therefore, when bury plough is lowered from the power boat, the drag frame and jet knife all need to be in the locking state, avoid bury plough to be not stable in the lowering process, and avoid bury plough to swing around the drag frame, when bury plough reaches the seabed, need to start to dig ditch and carry out the cable operation, at this time, the drag frame and jet knife all need to keep the floating state, and the drag frame keeps the floating state and can make the drag frame adjust the angle of the drag frame passively along with the distance between the power boat and bury plough, and the jet knife keeps the floating state and can make the jet knife lift when meeting the obstacle, avoid the obstacle, avoid damaging the jet knife. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other objects, features and advantages of the present application will become more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which: The same reference numerals in different drawings represent the same or similar elements unless otherwise specified. The drawings have not necessarily been drawn to scale in order to emphasize certain features of the application. The following detailed description is presented primarily for the purposes of enabling those skilled in the art to make and use the application.

[0019] Figure 1 It is a structure schematic view of bury plough.

[0020] Figures 2-6The hydraulic principle diagram of different embodiments of the hydraulic control system of the burying plough. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present application, the following will be described in more detail with reference to the relevant drawings.

[0022] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element and integrated as a whole, or a middle element can exist at the same time. The terms "mount", "one end", "the other end" and similar expressions used herein are only for illustrative purposes.

[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 to which this application belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0024] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0025] In the description of the present application, the description of the terms "preferred embodiment", "further embodiment", "other embodiment" or "specific example" means 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 application. In the present application, the illustrative description of the above terms does 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 the present application and the features of different embodiments or examples without contradiction.

[0026] The utility model provides a kind of burying plough's hydraulic control system's specific embodiment, referring to Figures 1-6, including a power unit and an execution unit; the power unit includes a power source 12 and a reversing valve 14, and the execution unit includes a balance valve group, a floating valve group and an execution member 4; the power source 12 is communicated with the reversing valve 14 through a pipeline and is used to provide power for the hydraulic system; the reversing valve 14 includes three working position states of left position, middle position and right position, in the embodiment, the reversing valve 14 is a three-position four-way reversing valve, and the reversing valve 14 is communicated with the balance valve group and a first oil tank 17 through pipelines respectively, and the flow direction of the oil circuit is switched through the transformation of the left position and the right position to switch the flow direction of the oil circuit; the balance valve group is communicated with a first chamber 18 and a second chamber 19 of the execution member 4 through pipelines respectively, the flow direction of the oil circuit is switched through the reversing valve 14 to control the oil inlet or outlet in the first chamber 18 and the second chamber 19, so as to control the reciprocating motion of an action member 20 in the execution member 4; the floating valve group is connected with the balance valve group in parallel through a pipeline, and the floating valve group is also communicated with the first chamber 18, the second chamber 19 of the execution member 4 and a second oil tank 21 through pipelines respectively; when the hydraulic control system is in a locking state, the reversing valve 14 is in the middle position, the oil circuit of the floating valve group is not communicated, and the balance valve group locks the position of the action member 20 in the execution member 4, so that the action member 20 is kept at the current position, at this time, the injection knife 5 or the drag frame 8 controlled by the hydraulic control system can be kept at the required angle; when the hydraulic control system is in a floating state, the reversing valve 14 is in the middle position, the oil circuit of the balance valve group is not communicated, and the floating valve group makes the first chamber 18 and the second chamber 19 of the execution member 4 communicated, and the action member 20 in the execution member 4 is in a floating state.

[0027] In the preferred embodiment, referring to Figures 2-6The balance valve group comprises a first one-way balance valve 11-1 and a second one-way balance valve 11-2. The reversing valve 14 communicates with the first one-way balance valve 11-1 through a pipeline, and the first one-way balance valve 11-1 communicates with the first chamber 18 of the actuator 4 through a pipeline. The reversing valve 14 also communicates with the second one-way balance valve 11-2 through a pipeline, and the second one-way balance valve 11-2 communicates with the second chamber 19 of the actuator 4 through a pipeline. Specifically, the reversing valve 14 is a three-position four-way reversing valve, which has an oil inlet P, an oil return T, a working oil port A and a working oil port B. The oil inlet P of the reversing valve 14 communicates with the power source 12 through a pipeline, and the oil return T of the reversing valve 14 communicates with the first oil tank 17 through a pipeline. When the reversing valve 14 is in the neutral position, the working oil port A of the reversing valve 14 communicates with the working oil port B, and the working oil port B also communicates with the oil return T. The first one-way balance valve 11-1 and the second one-way balance valve 11-2 are both pilot-operated one-way balance valves. The oil port A1 of the first one-way balance valve 11-1 communicates with the working oil port A of the reversing valve 14 through a pipeline, the oil port B1 of the first one-way balance valve 11-1 communicates with the first chamber 18 of the actuator 4 through a pipeline, and the control oil port K1 of the first one-way balance valve 11-1 communicates with the working oil port B of the reversing valve 14 through a pipeline. The oil port A2 of the second one-way balance valve 11-2 communicates with the working oil port B of the reversing valve 14 through a pipeline, the oil port B2 of the second one-way balance valve 11-2 communicates with the second chamber 19 of the actuator 4 through a pipeline, and the control oil port K2 of the second one-way balance valve 11-2 communicates with the working oil port A of the reversing valve 14 through a pipeline.

[0028] In the preferred embodiment, referring to Figures 2-4The floating valve group includes a first hydraulic control reversing valve 22 and a second hydraulic control reversing valve 23, the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 are communicated through a pipeline, and the pipeline for communicating the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 also communicates with the pipeline of the second oil tank 21; the first hydraulic control reversing valve 22 is communicated with the first chamber 18 of the actuator 4 through a pipeline, and the second hydraulic control reversing valve 23 is communicated with the second chamber 19 of the actuator 4 through a pipeline; when the hydraulic control system is in the locking state, the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 are both in the closed state, and when the hydraulic control system is in the floating state, the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 are both in the oil passage flow-through state. Specifically, the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 are both two-position two-way valves, the oil port A3 of the first hydraulic control reversing valve 22 is communicated with the pipeline of the first chamber 18 of the actuator 4, the oil port B3 is communicated with the pipeline of the second oil tank 21, the oil port A4 of the second hydraulic control reversing valve 23 is communicated with the second chamber 19 of the actuator 4, and the oil port B4 is communicated with the pipeline of the second oil tank 21, and the oil port B3 of the first hydraulic control reversing valve 22 is also communicated with the oil port B4 of the second hydraulic control reversing valve 23 through a pipeline, the control oil port K3 of the first hydraulic control reversing valve 22 and the control oil port K4 of the second hydraulic control reversing valve 23 are both communicated with the power source 12 through a pipeline, in the embodiment, the first position working state of the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 is the oil passage flow-through state, that is, the oil port A3 and the oil port B3 of the first hydraulic control reversing valve 22 are communicated, the oil port A4 and the oil port B4 of the second hydraulic control reversing valve 23 are communicated, and the second position working state of the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 is the closed state, that is, the oil port A3 and the oil port B3 of the first hydraulic control reversing valve 22 are not communicated, and the oil port A4 and the oil port B4 of the second hydraulic control reversing valve 23 are not communicated; when the hydraulic control system is in the floating state, the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 are both in the first position working state, that is, the oil passage flow-through state, so that the first chamber 18 and the second chamber 19 of the actuator 4 are communicated, and when the hydraulic control system is in the locking state, the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 are both in the second position working state, that is, the closed state.

[0029] In the preferred embodiment, referring to Figure 2The first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 are also communicated with the power source 12 through pipelines; when the hydraulic control system is in the locking state, the power source 12 is opened, the reversing valve 14 is in the neutral position, and the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 are switched to the cut-off state; when the hydraulic control system is in the floating state, the power source 12 is closed, the reversing valve 14 is in the neutral position, and the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 are switched to the oil passage flow-through state. Specifically, the control oil port K3 of the first hydraulic control reversing valve 22 and the control oil port K4 of the second hydraulic control reversing valve 23 are communicated with the power source 12 through pipelines, when the moving part 20 of the actuator 4 needs to be locked, the power source 12 is opened, the hydraulic oil flows to the control oil port K3 of the first hydraulic control reversing valve 22 and the control oil port K4 of the second hydraulic control reversing valve 23 through the pipelines, when the pressure reaches the oil passage switching pressure of the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23, the first hydraulic control reversing valve 22 is switched to the cut-off state, that is, the oil port A3 and the oil port B3 are disconnected, and the second hydraulic control reversing valve 23 is also switched to the cut-off state, that is, the oil port A4 and the oil port B4 are disconnected; when the moving part 20 of the actuator 4 needs to be floated, the power source 12 is closed, the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 are reset and switched to the oil passage flow-through state under the action of the elastic force, at this time, the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 are in the oil passage flow-through state, and the first chamber 18 and the second chamber 19 of the actuator 4 are communicated.

[0030] In the preferred embodiment, referring to Figures 3-4Further comprising an electromagnetic valve 13, the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 are communicated with the electromagnetic valve 13 through pipelines, and the electromagnetic valve 13 is communicated with the power source 12 through a pipeline; when the hydraulic control system is in the locking state, the reversing valve 14 is in the neutral position, the electromagnetic valve 13 is in the oil passage flowing state, and the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 are switched to the cut-off state; when the hydraulic control system is in the floating state, the reversing valve 14 is in the neutral position, the electromagnetic valve 13 is in the cut-off state, and the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 are switched to the oil passage flowing state. Specifically, the electromagnetic valve 13 in the embodiment is a two-position three-way valve, which comprises an oil port A5, an oil port B5 and an oil port C5, the oil port A5 is communicated with the oil return port T of the reversing valve 14 through a pipeline, the oil port C5 is communicated with the power source 12 through a pipeline, and the oil port B5 is communicated with the control oil port K3 of the first hydraulic control reversing valve 22 and the control oil port K4 of the second hydraulic control reversing valve 23 through a pipeline; when the electromagnetic valve 13 is in the first position working state, the electromagnetic valve 13 is in the cut-off state, that is, the oil port C5 of the electromagnetic valve 13 is not communicated with the oil port B5; when the electromagnetic valve 13 is in the second position working state, the electromagnetic valve 13 is in the oil passage flowing state, that is, the oil port C5 and the oil port B5 of the electromagnetic valve 13 are communicated, so that the hydraulic oil provided by the power source 12 can flow to the control oil port K3 of the first hydraulic control reversing valve 22 and the control oil port K4 of the second hydraulic control reversing valve 23 through the electromagnetic valve 13, so as to achieve the oil passage switching pressure of the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23.

[0031] In the preferred embodiment, referring to Figures 5-6, another embodiment of the floating valve group can also have the following structure: the floating valve group comprises a third one-way balance valve 10-1 and a fourth one-way balance valve 10-2, the third one-way balance valve 10-1 and the fourth one-way balance valve 10-2 are communicated through a pipeline, and the pipeline for communicating the third one-way balance valve 10-1 and the fourth one-way balance valve 10-2 also communicates with the pipeline of the second oil tank 21; the third one-way balance valve 10-1 is communicated with the first chamber 18 of the actuator 4 through a pipeline, and the fourth one-way balance valve 10-2 is communicated with the second chamber 19 of the actuator 4 through a pipeline; when the hydraulic control system is in the locking state, the third one-way balance valve 10-1 and the fourth one-way balance valve 10-2 are both in the closed state, and when the hydraulic control system is in the floating state, the third one-way balance valve 10-1 and the fourth one-way balance valve 10-2 are both in the oil passage flow state. Specifically, the third one-way balance valve 10-1 comprises an oil port A6, an oil port B6 and a control oil port K6, the fourth one-way balance valve 10-2 comprises an oil port A7, an oil port B7 and a control oil port K7, the oil port A6 of the third one-way balance valve 10-1 is communicated with the first chamber 18 of the actuator 4 through a pipeline, the oil port B6 of the third one-way balance valve 10-1 is communicated with the second oil tank 21 through a pipeline, the oil port A7 of the fourth one-way balance valve 10-2 is communicated with the second chamber 19 of the actuator 4 through a pipeline, the oil port B7 of the fourth one-way balance valve 10-2 is communicated with the second oil tank 21 through a pipeline, and at the same time, the oil port B6 of the third one-way balance valve 10-1 and the oil port B7 of the fourth one-way balance valve 10-2 are also communicated through a pipeline, and the control oil port K6 of the third one-way balance valve 10-1 and the control oil port K7 of the fourth one-way balance valve 10-2 are also communicated with the power source 12 through a pipeline.

[0032] In the preferred embodiment, referring to Figures 5-6Further comprising an electromagnetic valve 13, the third one-way balance valve 10-1 and the fourth one-way balance valve 10-2 are communicated with the electromagnetic valve 13 through pipelines, and the electromagnetic valve 13 is communicated with the power source 12 through a pipeline; when the hydraulic control system is in the locking state, the reversing valve 14 is in the neutral position, the electromagnetic valve 13 is in the cut-off state, and the third one-way balance valve 10-1 and the fourth one-way balance valve 10-2 are switched to the cut-off state; when the hydraulic control system is in the floating state, the reversing valve 14 is in the neutral position, the electromagnetic valve 13 is in the oil passage flowing state, and the third one-way balance valve 10-1 and the fourth one-way balance valve 10-2 are switched to the oil passage flowing state. The electromagnetic valve 13 is described with reference to the foregoing content. Specifically, the third one-way balance valve 10-1 and the fourth one-way balance valve 10-2 are both pilot type one-way balance valves, the oil port B5 of the electromagnetic valve 13 is communicated with the control oil port K6 of the third one-way balance valve 10-1 and the control oil port K7 of the fourth one-way balance valve 10-2, and whether the third one-way balance valve 10-1 and the fourth one-way balance valve 10-2 are communicated with the oil passage can be realized by switching the electromagnetic valve 13 between the first position working state and the second position working state.

[0033] In the preferred embodiment, the power source 12 can adopt any one of a hydraulic pump, a gear pump, a vane pump and a plunger pump, and in the embodiment, a hydraulic pump is adopted; the executing member 4 is a hydraulic oil cylinder, the first chamber 18 is a rodless chamber, the second chamber 19 is a rod chamber, and the acting member 20 is a piston rod.

[0034] The utility model provides five kinds of specific implementation manners of hydraulic control system of burying plough, referring to Figures 2-6 , now the control method of five kinds of hydraulic control system of burying plough is described in conjunction with the drawings:

[0035] Referring to Figure 2In this kind of embodiment, when the action part 20 of the executing part 4 needs to be controlled to do the telescopic movement, the power source 12 is started, part of the hydraulic oil will flow to the control oil port K3 of the first hydraulic control reversing valve 22 and the control oil port K4 of the second hydraulic control reversing valve 23 in the floating valve group through the control oil way, when the pressure reaches the position working state of switching the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23, the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 in the floating valve group are switched to the second position working state, that is, the cut-off state, the reversing valve 14 is powered on and moved, so that the reversing valve 14 switches back and forth between the left position and the right position, so that the action part 20 reciprocates, when the reversing valve 14 is in the right position, the oil inlet port P of the reversing valve 14 is communicated with the working oil port A, the oil return port T is communicated with the working oil port B, the remaining part of the hydraulic oil flows to the working oil port A through the oil inlet port P of the reversing valve 14, flows to the oil port A1 of the first one-way balance valve 11-1 in the balance valve group through the pipeline, the hydraulic oil at the oil port A1 of the first one-way balance valve 11-1, part of which flows to the control oil port K2 of the second one-way balance valve 11-2 through the pipeline, when the valve core moving pressure of the second one-way balance valve 11-2 is reached, the sequence valve part of the second one-way balance valve 11-2 can pass through the oil way, the remaining part flows to the oil port B1 of the first one-way balance valve 11-1 through the pipeline where the one-way valve of the first one-way balance valve 11-1 is located, then flows into the first cavity 18 of the executing part 4 through the pipeline, so that the action part 20 extends out, while the hydraulic oil in the second cavity 19 of the executing part 4 flows to the oil port B2 of the second one-way balance valve 11-2 through the pipeline, and flows out of the second one-way balance valve 11-2 through the sequence valve part of the second one-way balance valve 11-2, then flows to the oil return port T through the working oil port B of the reversing valve 14, and finally flows into the first oil tank 17, when the reversing valve 14 is in the left position, the oil inlet port P of the reversing valve 14 is communicated with the working oil port B, the oil return port T is communicated with the working oil port A, the remaining part of the hydraulic oil flows to the working oil port B through the oil inlet port P of the reversing valve 14, flows to the oil port A2 of the second one-way balance valve 11-2 in the balance valve group through the pipeline, the hydraulic oil at the oil port A2 of the second one-way balance valve 11-2, part of which flows to the control oil port K1 of the first one-way balance valve 11-1 through the pipeline, when the valve core moving pressure of the first one-way balance valve 11-1 is reached, the sequence valve part of the first one-way balance valve 11-1 can pass through the oil way, the remaining part flows to the oil port B2 of the second one-way balance valve 11-2 through the pipeline where the one-way valve of the second one-way balance valve 11-2 is located, then flows into the second cavity 19 of the executing part 4 through the pipeline, so that the action part 20 retracts, while the hydraulic oil in the first cavity 18 of the executing part 4 flows to the oil port B1 of the first one-way balance valve 11-1 through the pipeline, and flows out of the first one-way balance valve 11-1 through the sequence valve part of the first one-way balance valve 11-1, then flows to the oil return port T through the working oil port A of the reversing valve 14, and finally flows into the first oil tank 17.When the position of the action element 20 is adjusted by the telescopic movement and it is required to lock the action element 20 to keep it in the current position, the power source 12 is kept in the open state, the first and second hydraulic control reversing valves 22 and 23 are kept in the second position working state, the reversing valve 14 is moved to the neutral position, at this time the working oil port A and the working oil port B of the reversing valve 14 are communicated, the working oil port B and the return oil port T are communicated, the oil path of the sequence valve part in the first one-way balance valve 11-1 is not communicated and the oil path of the sequence valve part in the second one-way balance valve 11-2 is different, so that the oil pressure of the first and second chambers 18 and 19 in the execution element 4 is equivalent, and then the action element 20 is kept in the current position and locked; when it is required that the action element 20 can float, the power source 12 is closed, at this time the first and second hydraulic control reversing valves 22 and 23 in the floating valve group are elastically reset, the oil port A3 and the oil port B3 of the first hydraulic control reversing valve 22 are communicated, the oil port A4 and the oil port B4 of the second hydraulic control reversing valve 23 are communicated, so that the first and second chambers 18 and 19 of the execution element 4 are communicated, and then the action element 20 is in the floating state.

[0036] Referring to Figure 3In this embodiment, when the action element 20 of the actuator 4 needs to be controlled to extend and retract, the power source 12 is started, and the electromagnetic valve 13 is powered on to make the oil port B5 and the oil port C5 of the electromagnetic valve 13 communicate, and part of the hydraulic oil will pass through the electromagnetic valve 13, then flow to the control oil port K3 of the first hydraulic control reversing valve 22 and the control oil port K4 of the second hydraulic control reversing valve 23 in the floating valve group through the control oil circuit, when the pressure reaches the position working state of switching the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23, the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 in the floating valve group are switched to the second position working state, that is, the cut-off state, the reversing valve 14 is powered on and moves to make the reversing valve 14 switch back and forth between the left position and the right position to make the action element 20 reciprocate, when the reversing valve 14 is in the right position, the oil inlet port P of the reversing valve 14 communicates with the working oil port A, the oil return port T communicates with the working oil port B, the remaining part of the hydraulic oil flows to the working oil port A through the oil inlet port P of the reversing valve 14, then flows to the oil port A1 of the first one-way balance valve 11-1 in the balance valve group through the pipeline, the hydraulic oil at the oil port A1 of the first one-way balance valve 11-1, part of which flows to the control oil port K2 of the second one-way balance valve 11-2 through the pipeline, when the valve core moving pressure of the second one-way balance valve 11-2 is reached, the sequence valve part of the second one-way balance valve 11-2 can pass through the oil circuit, the remaining part flows to the oil port B1 of the first one-way balance valve 11-1 through the pipeline where the one-way valve of the first one-way balance valve 11-1 is located, then flows into the first cavity 18 of the actuator 4 through the pipeline, prompting the action element 20 to extend, while the hydraulic oil in the second cavity 19 of the actuator 4 flows to the oil port B2 of the second one-way balance valve 11-2 through the pipeline, and then flows out of the second one-way balance valve 11-2 through the sequence valve part of the second one-way balance valve 11-2, then flows to the oil return port T through the working oil port B of the reversing valve 14, and finally flows into the first oil tank 17, when the reversing valve 14 is in the left position, the oil inlet port P of the reversing valve 14 communicates with the working oil port B, the oil return port T communicates with the working oil port A, the remaining part of the hydraulic oil flows to the working oil port B through the oil inlet port P of the reversing valve 14, then flows to the oil port A2 of the second one-way balance valve 11-2 in the balance valve group through the pipeline, the hydraulic oil at the oil port A2 of the second one-way balance valve 11-2, part of which flows to the control oil port K1 of the first one-way balance valve 11-1 through the pipeline, when the valve core moving pressure of the first one-way balance valve 11-1 is reached, the sequence valve part of the first one-way balance valve 11-1 can pass through the oil circuit, the remaining part flows to the oil port B2 of the second one-way balance valve 11-2 through the pipeline where the one-way valve of the second one-way balance valve 11-2 is located, then flows into the second cavity 19 of the actuator 4 through the pipeline, prompting the action element 20 to retract, while the hydraulic oil in the first cavity 18 of the actuator 4 flows to the oil port B1 of the first one-way balance valve 11-1 through the pipeline, and then flows out of the first one-way balance valve 11-1 through the sequence valve part of the first one-way balance valve 11-1, then flows to the oil return port T through the working oil port A of the reversing valve 14,Finally, the oil flows into the first oil tank 17; when the position of the actuator 20 is adjusted by the telescopic movement and the actuator 20 needs to be locked to keep the current position, the power source 12 is kept open, the reversing valve 14 is moved to the neutral position, at this time, the working oil port A and the working oil port B of the reversing valve 14 are communicated, the working oil port B and the return oil port T are communicated, the sequence valve part oil passage of the first one-way balance valve 11-1 is not communicated, and the sequence valve part oil passage of the second one-way balance valve 11-2 is not communicated, so that the oil pressure of the first chamber 18 and the second chamber 19 in the actuator 4 is equal, and then the actuator 20 is kept in the current position and is locked; when the actuator 20 needs to be floating, the reversing valve 14 is moved to the neutral position, the solenoid valve 13 is not powered, and the solenoid valve 13 is reset under the elastic return action, at this time, the oil port B5 and the oil port C5 of the solenoid valve 13 are not communicated, at this time, the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 in the floating valve group are elastically reset, the oil port A3 and the oil port B3 of the first hydraulic control reversing valve 22 are communicated, the oil port A4 and the oil port B4 of the second hydraulic control reversing valve 23 are communicated, so that the first chamber 18 and the second chamber 19 of the actuator 4 are communicated, and then the actuator 20 is in the floating state.

[0037] Referring to Figure 4 , the difference between the embodiment and the embodiment in Figure 3 is the state of the solenoid valve 13, when the actuator 20 needs to reciprocate and the actuator 20 needs to be locked at a certain position, the solenoid valve 13 is in the state of not being powered, at this time, the oil port B5 and the oil port C5 of the solenoid valve 13 are communicated, which promotes the control oil passage to control the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 to switch to the cut-off state, and when the actuator 20 needs to be in the floating state, the solenoid valve 13 is in the state of being powered, at this time, the oil port B5 and the oil port C5 of the solenoid valve 13 are not communicated, which promotes the first hydraulic control reversing valve 22 and the second hydraulic control reversing valve 23 to elastically reset and switch to the oil passage flow state.

[0038] Referring to Figure 5In this embodiment, when the action member 20 of the actuator 4 needs to be controlled to perform the telescopic movement, the power source 12 is started, and the electromagnetic valve 13 is not electrified, so that the oil port B5 and the oil port C5 of the electromagnetic valve 13 are not communicated, the pressure of the control oil circuit is insufficient to open the sequence valve part in the third one-way balance valve 10-1 and the sequence valve part in the fourth one-way balance valve 10-2 in the balance valve group, at this time, the sequence valve part in the third one-way balance valve 10-1 and the sequence valve part in the fourth one-way balance valve 10-2 are in the closed state, after the reversing valve 14 is electrified, the reversing valve 14 moves to switch back and forth between the left position and the right position, so that the action member 20 reciprocates, when the reversing valve 14 is in the right position, the inlet oil port P of the reversing valve 14 is communicated with the working oil port A, the return oil port T is communicated with the working oil port B, the hydraulic oil flows to the working oil port A through the inlet oil port P of the reversing valve 14, flows to the oil port A1 of the first one-way balance valve 11-1 in the balance valve group through the pipeline, a part of the hydraulic oil at the oil port A1 of the first one-way balance valve 11-1 flows to the control oil port K2 of the second one-way balance valve 11-2 through the pipeline, when the valve core movement pressure of the second one-way balance valve 11-2 is reached, the sequence valve part of the second one-way balance valve 11-2 is opened, the remaining part flows to the oil port B1 of the first one-way balance valve 11-1 through the pipeline where the one-way valve is located, then flows into the first chamber 18 of the actuator 4 through the pipeline, so that the action member 20 extends out, and the hydraulic oil in the second chamber 19 of the actuator 4 flows to the oil port B2 of the second one-way balance valve 11-2 through the pipeline, and then flows out of the second one-way balance valve 11-2 through the sequence valve part of the second one-way balance valve 11-2, then flows to the return oil port T through the working oil port B of the reversing valve 14, and finally flows into the first oil tank 17, when the reversing valve 14 is in the left position, the inlet oil port P of the reversing valve 14 is communicated with the working oil port B, the return oil port T is communicated with the working oil port A, the remaining part of the hydraulic oil flows to the working oil port B through the inlet oil port P of the reversing valve 14, flows to the oil port A2 of the second one-way balance valve 11-2 in the balance valve group through the pipeline, a part of the hydraulic oil at the oil port A2 of the second one-way balance valve 11-2 flows to the control oil port K1 of the first one-way balance valve 11-1 through the pipeline, when the valve core movement pressure of the first one-way balance valve 11-1 is reached, the sequence valve part of the first one-way balance valve 11-1 can pass through the oil circuit, the remaining part flows to the oil port B2 of the second one-way balance valve 11-2 through the pipeline where the one-way valve is located, then flows into the second chamber 19 of the actuator 4 through the pipeline, so that the action member 20 retracts, and the hydraulic oil in the first chamber 18 of the actuator 4 flows to the oil port B1 of the first one-way balance valve 11-1 through the pipeline, and then flows out of the first one-way balance valve 11-1 through the sequence valve part of the first one-way balance valve 11-1, then flows to the return oil port T through the working oil port A of the reversing valve 14, and finally flows into the first oil tank 17.When the position of the action element 20 is adjusted by the telescopic movement and it is required to lock the action element 20 to keep it at the current position, the power source 12 is kept in the open state, and the electromagnetic valve 13 is not electrified, so that the electromagnetic valve 13 keeps the oil port B5 and the oil port C5 not communicated under the action of the elastic force, the reversing valve 14 moves to the neutral position, at this time, the working oil port A and the working oil port B of the reversing valve 14 are communicated, the working oil port B and the return oil port T are communicated, the oil path of the sequence valve part in the first one-way balance valve 11-1 is not communicated, and the oil path of the sequence valve part in the second one-way balance valve 11-2 is not communicated, so that the oil pressure of the first chamber 18 and the second chamber 19 in the execution element 4 is equal, and then the action element 20 is kept at the current position and is locked; when it is required that the action element 20 can float, the reversing valve 14 moves to the neutral position, and the electromagnetic valve 13 is electrified, at this time, the oil port B5 and the oil port C5 of the electromagnetic valve 13 are communicated, the hydraulic oil pumped out of the power source 12 enters the control oil path through the electromagnetic valve 13, and then flows to the control oil port K6 of the third one-way balance valve 10-1 and the control oil port K7 of the fourth one-way balance valve 10-2 in the floating valve group, so that the sequence valve part in the third one-way balance valve 10-1 is partially opened and the sequence valve part in the fourth one-way balance valve 10-2 is partially opened, so that the first chamber 18 and the second chamber 19 of the execution element 4 are communicated, and then the action element 20 is in the floating state.

[0039] Referring to Figure 6 The embodiment is different from the embodiment in Figure 5 that the state of the electromagnetic valve 13, when it is required that the action element 20 reciprocates and the action element 20 is locked at a position, the electromagnetic valve 13 is in the electrified state, at this time, the oil port B5 and the oil port C5 of the electromagnetic valve 13 are not communicated, the sequence valve part in the third one-way balance valve 10-1 and the sequence valve part in the fourth one-way balance valve 10-2 are not opened, and when it is required that the action element 20 is in the floating state, the electromagnetic valve 13 is in the non-electrified state, at this time, the oil port B5 and the oil port C5 of the electromagnetic valve 13 are communicated under the action of the elastic reset, the hydraulic oil pumped out of the power source 12 flows to the control oil path through the electromagnetic valve 13, so that the sequence valve part in the third one-way balance valve 10-1 is partially opened and the sequence valve part in the fourth one-way balance valve 10-2 is partially opened, so that the first chamber 18 and the second chamber 19 of the execution element 4 are communicated, and then the action element 20 is in the floating state.

[0040] The utility model further provides a kind of concrete implementation of burying plough, including burying plough body 6, the structure of burying plough body 6 in this embodiment is prior art, can refer to the spray flush drag type burying plough disclosed in Chinese patent CN221193503U, also can see the Figure 1The burying plough body 6 comprises a towing frame 8, a towing frame actuator 25, a jetting knife 5 and a jetting knife actuator 26. The actuator of the towing frame actuator 25 is connected with the towing frame 8 and is used to drive the towing frame 8 to swing. The actuator of the jetting knife actuator 26 is connected with the jetting knife 5 and is used to drive the towing frame 8 to swing. The burying plough further comprises two sets of hydraulic control systems of the burying plough. One set of the hydraulic control systems of the burying plough is used to control the actuator of the towing frame actuator 25 to switch between the telescopic action, the locking state and the floating state. The other set of the hydraulic control systems of the burying plough is used to control the actuator of the jetting knife actuator 26 to switch between the telescopic action, the locking state and the floating state. Because of the above-mentioned hydraulic control systems of the burying plough, when the burying plough body 6 is lowered or raised from the power boat 1, the towing frame 8 and the jetting knife 5 need to be in the locking state, for example, the towing frame 8 is perpendicular to the burying plough body 6, so as to avoid the burying plough to be unstable during the lowering process and to avoid the burying plough to swing around the towing frame 8. When the burying plough reaches the seabed 3, it is necessary to start to dig a ditch and lay a cable. At this time, the towing frame 8 and the jetting knife 5 need to be kept in the floating state. The towing frame 8 kept in the floating state can make the towing frame 8 automatically adjust the angle of the towing frame 8 passively with the distance between the power boat 1 and the burying plough. The jetting knife 5 kept in the floating state can make the jetting knife 5 automatically lift when it encounters an obstacle, so as to avoid the damage of the jetting knife 5.

[0041] Although the embodiments of the present application have been shown and described above, it should be understood by those skilled in the art that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

Claims

1. A hydraulic control system for burying a plow, characterized in that: The system includes a power unit and an execution unit. The power unit includes a power source and a directional valve. The execution unit includes a balance valve assembly, a floating valve assembly, and an actuator. The power source is connected to the directional valve via a pipeline and provides power to the hydraulic system. The directional valve has three working positions: left, center, and right. It is connected to the balance valve assembly and a first oil tank 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 and second chambers of the actuator via pipelines. 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 to the first and second chambers of the actuator and a second oil tank via pipelines. When the hydraulic control system is in a locked state, 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 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, so that the actuator in the actuator is in a floating state.

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

4. The hydraulic control system for the burying plow according to claim 3, characterized in that: The first hydraulic directional valve and the second hydraulic directional valve are also connected to the power source through pipelines; when the hydraulic control system is in the locked state, the power source is turned on, the directional valve is in the neutral position, and the first hydraulic directional valve and the second hydraulic directional valve are switched to the shut-off state; when the hydraulic control system is in the floating state, the power source is turned off, and the first hydraulic directional valve and the second hydraulic directional valve are switched to the oil passage flow state.

5. The hydraulic control system for the burying plow according to claim 3, characterized in that: It also includes a solenoid valve. The first hydraulic directional valve and the second hydraulic directional valve are both connected to the solenoid valve through pipelines. The solenoid valve is also connected to the power source through pipelines. When the hydraulic control system is in the locked state, the directional valve is in the neutral position, the solenoid valve is in the oil passage flow state, and the first hydraulic directional valve and the second hydraulic directional valve are switched to the shut-off state. When the hydraulic control system is in the floating state, the solenoid valve is in the shut-off state, and the first hydraulic directional valve and the second hydraulic directional valve are switched to the oil passage flow state.

6. The hydraulic control system for the burying plow according to claim 1, characterized in that: The floating valve assembly includes a third one-way balancing valve and a fourth one-way balancing valve, which are connected by a pipeline. This pipeline is also connected to the second oil tank pipeline. The third one-way balancing valve is connected to the first chamber of the actuator via a pipeline, and the fourth one-way balancing valve is connected to the second chamber of the actuator via a pipeline. When the hydraulic control system is in a locked state, both the third and fourth one-way balancing valves are in a closed state. When the hydraulic control system is in a floating state, both the third and fourth one-way balancing valves are in an oil passage flow state.

7. The hydraulic control system for the burying plow according to claim 6, characterized in that: It also includes a solenoid valve. The third and fourth one-way balance valves are both connected to the solenoid valve through pipelines. The solenoid valve is also connected to the power source through pipelines. When the hydraulic control system is in the locked state, the directional valve is in the neutral position, the solenoid valve is in the closed state, and the third and fourth one-way balance valves are switched to the closed state. When the hydraulic control system is in the floating state, the directional valve is in the neutral position, the solenoid valve is in the oil passage flow state, and the third and fourth one-way balance valves are switched to the oil passage flow state.

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

9. The hydraulic control system for the burying plow according to any one of claims 1-7, 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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