Hydraulic system and method for burying coulter by means of self weight
Through the hydraulic system and sensor technology driven by self-weight, the automatic operation of underwater buried coulter is realized, solving the problems of complex operation and poor uniformity in the existing technology, and improving the buried efficiency and stability.
Patent Information
- Application Number
- CN202411385647.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-01-03
AI Technical Summary
The existing underwater burial plowing technology relies on human operation, resulting in complex operations and large workloads, poor uniformity of the burial process, and difficult to monitor and control the burial depth in real time.
The hydraulic system driven by self-weight is adopted, including hydraulic pump, compensator, safety valve, reversing valve group, four-balance valve group and overflow oil filling valve group. Through adaptive sinking and adaptive lifting functions, the coulter itself is used. Gravity is buried and equipped with pressure sensors and displacement sensors to achieve automated operation.
It reduces the workload and complexity of operators, improves the uniformity and efficiency of burial, and can adapt to different terrain and landforms, avoid damage to hard objects, and achieve efficient and stable burial of cables.
Smart Images
Figure CN119244587A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of underwater plow embedding, and in particular to a hydraulic system and method for embedding a plow by relying on deadweight. Background Art
[0002] The underwater laying plow is the main tool for laying underwater cables. The high-pressure water flow on the plow is used to punch out a groove on the seabed, and then the underwater cable is buried in the groove through the cable press.
[0003] However, due to the different seabed topography and landforms, the placement of the plowshares needs to be monitored in real time during the actual construction process. During the operation, the operator needs to pay attention to the status of the buried plowshares in real time. In addition, the burial depth is mostly controlled by manual operation. The entire burial process depends on the experience of the operators, and the workload of the operators is large and the operation is complicated. The burial process relies on personal experience and has poor uniformity. For this reason, we proposed a hydraulic system and method for burying plowshares by relying on their own weight. Summary of the invention
[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art, and to propose a hydraulic system and method for burying a plow blade by relying on its own weight. The hydraulic system and method for burying a plow blade by relying on its own weight solve the problem that during the operation, the operator needs to pay attention to the status of the buried plow blade in real time; and the burial depth is mostly controlled by manual operation, and the entire burying process depends on the experience of the operator.
[0005] In order to achieve the above object, the present invention adopts the following technical solutions:
[0006] A hydraulic system for burying a plow blade by its own weight, comprising a hydraulic pump, a compensator, a safety valve on one side of the compensator, a reversing valve group on one side of the safety valve, a four-balancing valve group on one side of the reversing valve group, and an overflow oil-making valve group on one side of the four-balancing valve group.
[0007] An operating method of a hydraulic system for burying a coulter by its own weight, the specific steps are as follows:
[0008] S1, preparation stage: the piston rod of the coulter cylinder is extended, and the coulter is in the lifted and retracted state;
[0009] S2, the plow blade descends by its own weight: oil enters the C5 port of the four-balance valve block, the balance valve opens, the plow blade as a whole is in a floating state, and the plow blade's own weight drives the plow blade cylinder to descend into place;
[0010] S3, plow blade self-adaptive working stage;
[0011] S4, the cylinder self-adaptation ends and the cylinder sinks again.
[0012] Preferably, in the self-adaptive working stage of the plowshare, after the plowshare is lowered into place, the pressure at port C5 is released, high-pressure oil is no longer established, the balancing valve is in a closed state, the plowshare oil cylinder relies on the four-balancing valve group to maintain pressure, and the whole machine is towed for travel.
[0013] Preferably, the plow blade adaptive working stage: when encountering a hard object, the pressure in the rod chamber of the plow blade cylinder increases. In order to prevent the plow blade from being damaged, an oil replenishing overflow valve is arranged in the rod chamber of the plow blade cylinder. When the pressure in the rod chamber reaches the set pressure of the overflow valve of the oil replenishing overflow valve group, the overflow valve opens, the rod chamber unloads oil through the overflow valve, and the rodless chamber replenishes oil through the oil replenishing valve, thereby completing the adaptive lifting and obstacle avoidance of the plow blade cylinder.
[0014] Preferably, the cylinder self-adapts and ends the re-sinking stage: a pressure sensor and a cylinder displacement sensor are arranged in the circuit, and whether the self-adaptation is completed is judged by the pressure data of the rod cavity pressure sensor of the coulter cylinder and the coulter cylinder displacement sensor;
[0015] That is, when the rod chamber pressure P1 of the cylinder is less than the overflow valve pressure P in the oil replenishment overflow valve group and the stroke change ΔL of the plowshare cylinder displacement sensor has an obvious stroke change and is greater than the set displacement change L, the pressure oil is re-established at the C5 port, the four balance groups are opened, the plowshare floats as a whole, and gravity decreases, completing the entire adaptive sinking action.
[0016] A hydraulic system for burying a plow blade by its own weight, comprising a hydraulic pump, a compensator, a safety valve disposed on one side of the compensator, a reversing valve group disposed on one side of the safety valve, an oil replenishing overflow valve group 2 disposed on one side of the reversing valve group, and a balancing valve group disposed on one side of the oil replenishing overflow valve group 2.
[0017] An operating method of a hydraulic system for burying a coulter by its own weight, wherein the specific steps for trenching by its own weight without oil supply are as follows:
[0018] A1. Preparation stage: The piston rod of the coulter cylinder is extended, and the coulter is in the lifted and retracted state;
[0019] A2. The plow blade descends by its own weight: The mid-position function of the proportional valve is Y-type. After F1A3V is energized, the large cavity of the plow blade cylinder is connected to the compensator, and the piston rod is retracted by its own weight and begins to descend;
[0020] A3. Self-adaptive furrowing of the coulter: When the coulter reaches the preset depth, F1A3V continues to be energized to ensure that the rodless chamber is connected to the compensator. The coulter continues to move downward under the action of gravity. When it hits a hard object, the coulter shows a tendency to rise and the piston rod shows a tendency to extend. Since the rod chamber is equipped with a balance valve, there is no pressure oil input to the rodless chamber at this time, and the balance valve cannot be opened. The pressure in the rod chamber increases. When the pressure reaches the overflow pressure P set by the overflow valve, the oil in the rod chamber flows back to the compensator from the overflow valve or flows into the rodless chamber through the oil replenishment check valve, so as to avoid hard objects.
[0021] A4. When there is no hard object, the oil in the rodless chamber flows back to the compensator through the solenoid valve, and the rod chamber is replenished with oil through the balance valve and the check valve. The plow cutter descends by its own weight to make up the depth, completing the entire adaptive action.
[0022] An operating method of a hydraulic system for burying a coulter by its own weight, the specific steps for normal oil supply and self-weight furrowing are as follows:
[0023] B1. Preparation stage: The piston rod of the coulter oil cylinder is extended, and the coulter is in the lifted and retracted state;
[0024] B2. Plowshare lowering: After F1A3V loses power, the proportional reversing valve F1A2V in the right position gains power, and the hydraulic oil enters the rod chamber, pushing the plowshare oil cylinder back and the plowshare lowers;
[0025] B3. Self-adaptive furrowing of the coulter: When the coulter reaches the preset depth, F1A3V continues to lose power to ensure that the rodless chamber is connected to the compensator. The coulter continues to move downward under the action of gravity. When it hits a hard object, the coulter shows a tendency to rise and the piston rod shows a tendency to extend. Since the rod chamber is equipped with a balance valve, there is no pressure oil input to the rodless chamber at this time, and the balance valve cannot be opened. The pressure in the rod chamber increases. When the overflow pressure of the overflow valve is reached, the oil in the rod chamber flows back to the compensator from the overflow valve or flows into the rodless chamber through the oil replenishment check valve, so as to avoid hard objects.
[0026] B4. When there is no hard object, the oil in the rodless chamber flows back to the compensator through the solenoid valve, and the rod chamber is replenished with oil through the balance valve and the one-way valve. The plow cutter descends by its own weight to make up the depth, completing the entire adaptive action.
[0027] To summarize, the present invention, by arranging a hydraulic pump, a compensator, a safety valve, a reversing valve group, a four-balancing valve group, an overflow and oil-supplementing valve group one, an oil-supplementing overflow valve group two and a balancing valve group and an operating method, avoids the problems of heavy workload for operators, complicated operation, reliance on personal experience and poor uniformity in the burying process, thereby ensuring efficient and stable cable burying. It can rely on the deadweight of the plow itself to bury the cable, has an adaptive function, and can adapt to various terrain operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;
[0029] Figure 2 This is a schematic diagram of a method flow chart of Embodiment 1 of the present invention;
[0030] Figure 3 This is a schematic diagram of the structure of the second embodiment of the present invention.
[0031] In the figure: 1. Hydraulic pump; 2. Compensator; 3. Safety valve; 4. Reversing valve group; 5. Four-balance valve group; 6. Overflow and oil-supply valve group 1; 7. Oil-supply overflow valve group 2; 8. Balancing valve group. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0033] Embodiment 1
[0034] like Figure 1-Figure 2 As shown, a hydraulic system for burying a plow blade by its own weight includes a hydraulic pump 1, a compensator 2, a safety valve 3 is arranged on one side of the compensator 2, a reversing valve group 4 is arranged on one side of the safety valve 3, a four-balancing valve group 5 is arranged on one side of the reversing valve group 4, and an overflow oil-making valve group 6 is arranged on one side of the four-balancing valve group 5.
[0035] An operating method of a hydraulic system for burying a coulter by its own weight, the specific steps are as follows:
[0036] S1, preparation stage: the piston rod of the coulter cylinder is extended, and the coulter is in the lifted and retracted state;
[0037] S2, the plow blade descends by its own weight: oil enters the C5 port of the four-balance valve block, the balance valve opens, the plow blade as a whole is in a floating state, and the plow blade's own weight drives the plow blade cylinder to descend into place;
[0038] S3, coulter self-adaptation working stage; after the coulter is lowered into place, the pressure at port C5 is released, high-pressure oil is no longer established, the balancing valve is in a closed state, the coulter cylinder relies on the four-balancing valve group to maintain pressure, and the whole machine is towing:
[0039] When encountering hard objects, the pressure in the rod chamber of the coulter oil cylinder increases. To prevent the coulter from being damaged, an oil replenishment relief valve is set in the rod chamber of the coulter oil cylinder. When the pressure in the rod chamber reaches the set pressure of the relief valve of the oil replenishment relief valve group, the relief valve opens, the rod chamber unloads oil through the relief valve, and the rodless chamber replenishes oil through the oil replenishment valve, completing the adaptive lifting and obstacle avoidance of the coulter oil cylinder.
[0040] S4, the cylinder self-adaptation ends and the cylinder sinks again: a pressure sensor and a cylinder displacement sensor are arranged in the circuit, and the pressure data of the rod cavity pressure sensor of the coulter cylinder and the coulter cylinder displacement sensor are used to determine whether the self-adaptation is completed;
[0041] That is, when the rod chamber pressure P1 of the cylinder is less than the overflow valve pressure P in the oil replenishment overflow valve group and the stroke change ΔL of the plowshare cylinder displacement sensor has an obvious stroke change and is greater than the set displacement change L, the pressure oil is re-established at the C5 port, the four balance groups are opened, the plowshare floats as a whole, and gravity decreases, completing the entire adaptive sinking action.
[0042] Embodiment 2
[0043] like Figure 3 As shown, a hydraulic system for burying a plow blade by its own weight includes a hydraulic pump 1, a compensator 2, a safety valve 3 is arranged on one side of the compensator 2, a reversing valve group 4 is arranged on one side of the safety valve 3, an oil replenishing overflow valve group 2 7 is arranged on one side of the reversing valve group 4, and a balancing valve group 8 is arranged on one side of the oil replenishing overflow valve group 2 7.
[0044] An operating method of a hydraulic system for burying a coulter by its own weight, wherein the specific steps for trenching by its own weight without oil supply are as follows:
[0045] A1. Preparation stage: The piston rod of the coulter oil cylinder is extended, and the coulter is in the lifted and retracted state;
[0046] A2. The plow blade descends by its own weight: The mid-position function of the proportional valve is Y-type. After F1A3V is energized, the large cavity of the plow blade cylinder is connected to the compensator, and the piston rod is retracted by its own weight and begins to descend;
[0047] A3. Self-adaptive furrowing of the coulter: When the coulter reaches the preset depth, F1A3V continues to be energized to ensure that the rodless chamber is connected to the compensator. The coulter continues to move downward under the action of gravity. When it hits a hard object, the coulter shows a tendency to rise and the piston rod shows a tendency to extend. Since the rod chamber is equipped with a balance valve, there is no pressure oil input to the rodless chamber at this time, and the balance valve cannot be opened. The pressure in the rod chamber increases. When the pressure reaches the overflow pressure P set by the overflow valve, the oil in the rod chamber flows back to the compensator from the overflow valve or flows into the rodless chamber through the oil replenishment check valve, so as to avoid hard objects.
[0048] A4. When there is no hard object, the oil in the rodless chamber flows back to the compensator through the solenoid valve, and the rod chamber is replenished with oil through the balance valve check valve. The coulter descends to make up the depth by its own weight, completing the entire adaptive action. The specific steps for normal oil supply and self-weight ditching are as follows:
[0049] B1. Preparation stage: The piston rod of the coulter oil cylinder is extended, and the coulter is in the lifted and retracted state;
[0050] B2. Plowshare lowering: After F1A3V loses power, the proportional reversing valve F1A2V in the right position gains power, and the hydraulic oil enters the rod chamber, pushing the plowshare oil cylinder back and the plowshare lowers;
[0051] B3. Self-adaptive furrowing of the coulter: When the coulter reaches the preset depth, F1A3V continues to lose power to ensure that the rodless chamber is connected to the compensator. The coulter continues to move downward under the action of gravity. When it hits a hard object, the coulter shows a tendency to rise and the piston rod shows a tendency to extend. Since the rod chamber is equipped with a balance valve, there is no pressure oil input to the rodless chamber at this time, and the balance valve cannot be opened. The pressure in the rod chamber increases. When the overflow pressure of the overflow valve is reached, the oil in the rod chamber flows back to the compensator from the overflow valve or flows into the rodless chamber through the oil replenishment check valve, so as to avoid hard objects.
[0052] B4. When there is no hard object, the oil in the rodless chamber flows back to the compensator through the solenoid valve, and the rod chamber is replenished with oil through the balance valve and the one-way valve. The plow cutter descends by its own weight to make up the depth, completing the entire adaptive action.
[0053] It should be noted that self-adaptation means that the trenching plow relies on its own gravity to descend and press the cable. During the whole process, when the plow presses on stones or hard objects, it can automatically retract without the operator's control, so as to prevent the plow from being damaged by stones. At the same time, the displacement sensor and pressure sensor collect data and the program determines whether it has passed through the stone area to perform another descent by gravity. The whole process is self-adaptive without human intervention.
[0054] Embodiment 1 uses a four-balance valve group to achieve the self-weight lowering of the plowshare, which requires an external control oil port; Embodiment 2 uses a two-position two-way solenoid valve and a Y-type middle position function to achieve the self-weight lowering.
[0055] The valve bodies mentioned in this case are all components within the valve group.
[0056] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A hydraulic system for burying a coulter by its own weight, characterized in that: The invention comprises a hydraulic pump (1), a compensator (2), a safety valve (3) being arranged on one side of the compensator (2), a reversing valve group (4) being arranged on one side of the safety valve (3), a four-balance valve group (5) being arranged on one side of the reversing valve group (4), and an overflow oil supply valve group (6) being arranged on one side of the four-balance valve group (5).
2. The method for operating a hydraulic system for embedding a coulter by its own weight according to claim 1, characterized in that: The specific steps are as follows: S1, preparation stage: the piston rod of the coulter cylinder is extended, and the coulter is in the lifted and retracted state; S2, the plow blade descends by its own weight: oil enters the C5 port of the four-balance valve block, the balance valve opens, the plow blade as a whole is in a floating state, and the plow blade's own weight drives the plow blade cylinder to descend into place; S3, plow blade self-adaptive working stage; S4, the cylinder self-adaptation ends and the cylinder sinks again.
3. The method for operating a hydraulic system for embedding a coulter by its own weight according to claim 2, characterized in that: The plowshare self-adaptive working stage: after the plowshare is lowered into place, the pressure at the C5 port is released, high-pressure oil is no longer established, the balancing valve is in a closed state, the plowshare oil cylinder relies on the four-balancing valve group to maintain pressure, and the whole machine is towed for travel.
4. The method for operating a hydraulic system for embedding a coulter by its own weight according to claim 3, characterized in that: The described coulter adaptive working stage: when encountering hard objects, the pressure in the rod chamber of the coulter cylinder increases. In order to prevent the coulter from being damaged, an oil replenishing relief valve is arranged in the rod chamber of the coulter cylinder. When the pressure in the rod chamber reaches the set pressure of the relief valve of the oil replenishing relief valve group, the relief valve opens, the rod chamber unloads oil through the relief valve, and the rodless chamber replenishes oil through the oil replenishing valve, thereby completing the adaptive lifting and obstacle avoidance of the coulter cylinder.
5. The method for operating a hydraulic system for embedding a coulter by its own weight according to claim 2, characterized in that: The cylinder self-adaptation ends and the re-sinking stage is: a pressure sensor and a cylinder displacement sensor are arranged in the circuit, and the pressure data of the rod cavity pressure sensor of the coulter cylinder and the coulter cylinder displacement sensor are used to determine whether the self-adaptation is completed; That is, when the rod chamber pressure P1 of the cylinder is less than the overflow valve pressure P in the oil replenishment overflow valve group and the stroke change ΔL of the plowshare cylinder displacement sensor has an obvious stroke change and is greater than the set displacement change L, the pressure oil is re-established at the C5 port, the four balance groups are opened, the plowshare floats as a whole, and gravity decreases, completing the entire adaptive sinking action.
6. A hydraulic system for embedding a coulter by its own weight according to claim 1, characterized in that: The invention comprises a hydraulic pump (1), a compensator (2), a safety valve (3) being arranged on one side of the compensator (2), a reversing valve group (4) being arranged on one side of the safety valve (3), a second oil supply overflow valve group (7) being arranged on one side of the reversing valve group (4), and a balancing valve group (8) being arranged on one side of the second oil supply overflow valve group (7).
7. The method for operating a hydraulic system for embedding a coulter by its own weight according to claim 6, characterized in that: The specific steps for trenching without oil supply and deadweight are as follows: A1. Preparation stage: The piston rod of the coulter cylinder is extended, and the coulter is in the lifted and retracted state; A2. The plow blade descends by its own weight: The mid-position function of the proportional valve is Y-type. After F1A3V is energized, the large cavity of the plow blade cylinder is connected to the compensator, and the piston rod is retracted by its own weight and begins to descend; A3. Self-adaptive furrowing of the coulter: When the coulter reaches the preset depth, F1A3V continues to be energized to ensure that the rodless chamber is connected to the compensator. The coulter continues to move downward under the action of gravity. When it hits a hard object, the coulter shows a tendency to rise and the piston rod shows a tendency to extend. Since the rod chamber is equipped with a balance valve, there is no pressure oil input to the rodless chamber at this time, and the balance valve cannot be opened. The pressure in the rod chamber increases. When the pressure reaches the overflow pressure P set by the overflow valve, the oil in the rod chamber flows back to the compensator from the overflow valve or flows into the rodless chamber through the oil replenishment check valve, so as to avoid hard objects. A4. When there is no hard object, the oil in the rodless chamber flows back to the compensator through the solenoid valve, and the rod chamber is replenished with oil through the balance valve and the check valve. The plow cutter descends by its own weight to make up the depth, completing the entire adaptive action.
8. The method for operating a hydraulic system for embedding a coulter by its own weight according to claim 6, characterized in that: The specific steps for normal oil supply and self-weight ditching are as follows: B1. Preparation stage: The piston rod of the coulter oil cylinder is extended, and the coulter is in the lifted and retracted state; B2. Plowshare lowering: After F1A3V loses power, the proportional reversing valve F1A2V in the right position gains power, and the hydraulic oil enters the rod chamber, pushing the plowshare oil cylinder back and the plowshare lowers; B3. Self-adaptive furrowing of the coulter: When the coulter reaches the preset depth, F1A3V continues to lose power to ensure that the rodless chamber is connected to the compensator. The coulter continues to move downward under the action of gravity. When it hits a hard object, the coulter shows a tendency to rise and the piston rod shows a tendency to extend. Since the rod chamber is equipped with a balance valve, there is no pressure oil input to the rodless chamber at this time, and the balance valve cannot be opened. The pressure in the rod chamber increases. When the overflow pressure of the overflow valve is reached, the oil in the rod chamber flows back to the compensator from the overflow valve or flows into the rodless chamber through the oil replenishment check valve, so as to avoid hard objects. B4. When there is no hard object, the oil in the rodless chamber flows back to the compensator through the solenoid valve, and the rod chamber is replenished with oil through the balance valve and the one-way valve. The plow cutter descends by its own weight to make up the depth, completing the entire adaptive action.