An automatic control anchor winch hydraulic system

Abstract

An automatic control anchor winch hydraulic system, the automatic control anchor winch hydraulic system includes an oil tank, a constant pressure variable pump, an oil return filter, a multi-way reversing valve, a balancing valve, an electromagnetic reversing valve and a brake cylinder; the oil outlet of the oil tank is connected to the oil inlet end of the constant pressure variable pump, the oil outlet end of the constant pressure variable pump is connected to the oil inlet end of a one-way valve, the oil outlet end of the one-way valve is connected to the oil inlet end of a two-way pressure compensator, and the oil outlet end of the two-way pressure compensator is connected to the oil inlet end of the multi-way reversing valve. This design forms a load-sensitive control system through a load constant pressure variable pump and a multi-way reversing valve. The output pressure of the constant pressure variable pump is determined by the load, and the output flow of the constant pressure variable pump can automatically change according to the load flow demand, so that no unnecessary hydraulic energy loss will be generated, thereby achieving a good energy-saving effect; at the same time, it can reduce the heat generated by the hydraulic system and reduce the heat exchange power of the cooler in the hydraulic system.

Description

Technical Field

[0001] The invention relates to an improvement on the technology of an anchor windlass hydraulic system, belongs to the field of anchor windlasses, and in particular to an automatic control anchor windlass hydraulic system. Background Art

[0002] Anchor winches are important deck machinery on ships and offshore platforms. They are mainly used for mooring ships and offshore platforms at docks or anchorages. With the continuous development and updating of technology, anchor winches are gradually moving towards automation and intelligence.

[0003] The existing hydraulic control system of the anchor winch mainly includes: a metering pump, a safety valve, a three-way pressure compensator, a three-position four-way reversing valve, a balancing valve and a motor. The metering pump outputs a certain flow rate to input the hydraulic oil into the oil inlet of the three-position four-way reversing valve, and controls the forward or reverse rotation of the motor through the three-position four-way reversing valve, and then drives the anchor winch to rotate through the motor to realize the anchor winch anchoring action. During the anchor winch anchoring process, the operator needs to manually adjust the anchor winch braking force to control the anchor chain lowering speed to avoid the danger caused by the anchor chain lowering speed being too fast when anchoring. In the prior art, after the hydraulic system is started, the hydraulic oil output by the metering pump flows back to the oil tank through the safety valve, which will cause energy waste and increase the oil temperature of the hydraulic system.

[0004] The Chinese invention patent with application number CN202010594990.1 and application date June 28, 2020, discloses a large anchor machine free anchoring flexible energy-saving speed limit control system, including an anchor machine brake cylinder, a one-way throttle valve, a two-position four-way solenoid reversing valve, a pressure reducing valve, a clutch cylinder, a pressure gauge, a one-way valve, and a main safety valve; the oil outlet of the hydraulic pump is connected to the P port of the main safety valve through a one-way valve on one side, and is connected to the working oil chamber of the anchor machine brake cylinder through a pressure reducing valve, a solenoid reversing valve, and a one-way throttle valve on the other side. The oil suction port is connected to the hydraulic oil tank through a hydraulic pipeline, and the clutch cylinder is connected to the two-position four-way solenoid reversing valve and the pressure reducing valve. The clutch cylinder is equipped with a one-way throttle valve. The system can automatically adjust the electric proportional overflow valve at the pump outlet to adjust the size of the braking force. When the large anchor machine is anchored, the speed is limited to the required range to avoid impact and loss of control. However, the problem of energy waste in the hydraulic system has not been solved.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of this patent application, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention

[0006] The purpose of the present invention is to overcome the problem of energy waste in the hydraulic system in the prior art and to provide a multi-pump displacement synchronous control hydraulic system that saves energy in the hydraulic system.

[0007] To achieve the above objectives, the technical solution of the present invention is: an automatic control anchor windlass hydraulic system, the automatic control anchor windlass hydraulic system includes an oil tank, a constant pressure variable pump, an oil return filter, a multi-way reversing valve, a balancing valve, an electromagnetic reversing valve and a brake cylinder;

[0008] The oil outlet of the oil tank is connected to the oil inlet of the constant pressure variable pump, the oil outlet of the constant pressure variable pump is connected to the oil inlet of a one-way valve, the oil outlet of the one-way valve is connected to the oil inlet of a two-way pressure compensator, the oil outlet of the two-way pressure compensator is connected to the oil inlet of a multi-way reversing valve, the oil outlet of the multi-way reversing valve is connected to the oil inlet of a balancing valve, and the oil outlet of the balancing valve is connected to the motor;

[0009] The oil inlet of the oil tank is connected to the oil outlet end of the return oil filter, the oil inlet end of the return oil filter is connected to the oil outlet end of the cooler, the oil inlet end of the cooler is connected to the oil outlet end of the electromagnetic reversing valve, the oil inlet end of the electromagnetic reversing valve is connected to the oil outlet end of the brake cylinder, the oil inlet end of the brake cylinder is connected to the oil outlet end of the electromagnetic reversing valve, the oil inlet end of the electromagnetic reversing valve is connected to the oil outlet end of the electric proportional pressure reducing valve, the oil inlet end of the electric proportional pressure reducing valve is connected to a one-way valve and the oil circuit between the two-way pressure compensator.

[0010] The constant-pressure variable pump includes an oil pump and a variable oil cylinder. The oil pump is connected to a motor. The oil inlet end of the oil pump is connected to the oil outlet of the oil tank. The oil outlet end of the oil pump is connected to the oil inlet end of the variable oil cylinder. The oil outlet end of the variable oil cylinder is connected to the oil inlet end of a reversing valve. The oil outlet end of a reversing valve is connected to the oil inlet end of a pressure cut-off valve. The oil outlet end of the oil pump is connected to the oil inlet end of a reversing valve. The oil outlet end of the pressure cut-off valve is connected to the oil inlet end of a check valve via a P port.

[0011] The multi-way reversing valve includes two reversing valves and a shuttle valve, the oil inlet ends of the two reversing valves are connected to the oil outlet ends of the two-way pressure compensator, the oil outlet ends of the two reversing valves are connected to the oil inlet end of the shuttle valve, and the oil outlet end of the shuttle valve is connected to the oil inlet end of the balancing valve.

[0012] Two safety valves and one safety valve are arranged in sequence between the oil circuits of the multi-way reversing valve and the balancing valve.

[0013] The A port of the multi-way reversing valve is connected with the oil inlet P of the balancing valve, the oil inlet end of the first safety valve and the oil outlet end of the second safety valve, and the B port of the multi-way reversing valve is connected with the oil inlet of the second safety valve, the control oil port X of the balancing valve, and the oil outlet end of the first safety valve.

[0014] The oil outlet end of the two-way pressure compensator is connected to the P port of the multi-way reversing valve, and the control oil port X of the two-way pressure compensator is connected to the load port X of the multi-way reversing valve.

[0015] The return oil filter includes a filter, a pressure difference alarm switch and two one-way valves. The oil outlet end of the filter is connected to the oil inlet of the oil tank, the oil inlet end of the filter is connected to the oil outlet end of the cooler, and the pressure difference alarm switch and the two one-way valves are arranged on the filter.

[0016] The oil inlet end of the three safety valves is communicated with a one-way valve and an oil circuit between two-way pressure compensators, and the oil outlet end of the three safety valves is communicated with the oil inlet of the oil tank.

[0017] The oil inlet end of the cooler is connected to the T port of the electromagnetic reversing valve, the B port of the electromagnetic reversing valve is connected to the oil outlet end of the brake cylinder, the oil inlet end of the brake cylinder is connected to the A port of the electromagnetic reversing valve, and the P port of the electromagnetic reversing valve is connected to the oil outlet end of the electric proportional pressure reducing valve.

[0018] The balance valve is connected to the A port of the motor via the P port, and the B port of the motor is connected to the oil tank.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In an automatic control anchor winch hydraulic system of the present invention, the oil outlet of the oil tank is connected to the oil inlet of the constant pressure variable pump, the oil outlet of the constant pressure variable pump is connected to the oil inlet of a one-way valve, the oil outlet of the one-way valve is connected to the oil inlet of a two-way pressure compensator, the oil outlet of the two-way pressure compensator is connected to the oil inlet of a multi-way reversing valve, the oil outlet of the multi-way reversing valve is connected to the oil inlet of a balancing valve, the oil outlet of the balancing valve is connected to a motor, and a load-sensitive control system is formed by a load constant pressure variable pump and a multi-way reversing valve. The output pressure of the constant pressure variable pump is determined by the load, and the output flow of the constant pressure variable pump can automatically change according to the load flow demand, so that no unnecessary hydraulic energy loss is generated, thereby achieving a good energy-saving effect; at the same time, the heat generation of the hydraulic system can be reduced, and the heat exchange power of the cooler in the hydraulic system can be reduced. Therefore, the design enhances the energy-saving effect and improves the heat exchange power.

[0021] 2. In an automatic control anchor winch hydraulic system of the present invention, the reversing valve includes a reversing valve and a shuttle valve, the oil inlet of the reversing valve is connected to the oil outlet of the two-way pressure compensator, the oil outlet of the reversing valve is connected to the oil inlet of the shuttle valve, the oil outlet of the shuttle valve is connected to the oil inlet of the balance valve, two safety valves and one safety valve are arranged in sequence between the oil circuits of the multi-way reversing valve and the balance valve, and a two-way differential pressure compensator is arranged at the oil inlet of the multi-way reversing valve, so that the differential pressure between the inlet and outlet of the multi-way reversing valve can be kept constant. When the valve core opening of the multi-way reversing valve is constant, the flow through the multi-way reversing valve is a constant value, so that the rotation speed of the anchor winch motor is not affected by load fluctuations. Therefore, the design has a stable speed and a constant pressure difference.

[0022] 3. In an automatic control anchor winch hydraulic system of the present invention, the oil inlet end of the brake cylinder is connected to the oil outlet end of the electromagnetic reversing valve, the oil inlet end of the electromagnetic reversing valve is connected to the oil outlet end of the electric proportional pressure reducing valve, the oil inlet end of the electric proportional pressure reducing valve is connected to a one-way valve, and the oil circuit between the two-way pressure compensator is connected. An electric proportional pressure reducing valve is set in the anchor winch brake cylinder control oil circuit, and the oil pressure entering the brake cylinder is changed by controlling the electrical signal of the electric proportional pressure reducing valve, thereby changing the braking force of the anchor winch brake; combined with the anchor chain wheel speed monitoring sensor, automatic closed-loop control of the anchor chain lowering speed when dropping anchor can be achieved. The automatic operation level of the anchor winch is improved, and the operator requirements of the anchor winch are reduced. Therefore, this design has a high level of automation and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a structural schematic diagram of the constant pressure variable displacement pump in the present invention.

[0025] Figure 3 It is a structural schematic diagram of the multi-way reversing valve in the present invention.

[0026] Figure 4 It is a structural schematic diagram of the balancing valve in the present invention.

[0027] Figure 5 It is a schematic diagram of the structure of the oil return filter in the present invention.

[0028] In the figure: oil tank 1, constant pressure variable pump 2, oil pump 2.1, variable cylinder 2.3, a reversing valve 2.4, a pressure cut-off valve 2.5, three safety valves 3, a cooler 4, a return oil filter 5, a filter 5.1, a pressure difference alarm switch 5.2, two non-return valves 5.3, a two-way pressure compensator 6, a multi-way reversing valve 7, two reversing valves 7.1, a shuttle valve 7.2, a balancing valve 8, a safety valve 9.1, two safety valves 9.2, a motor 10, a non-return valve 11, an electric proportional pressure reducing valve 12, an electromagnetic reversing valve 13, and a brake cylinder 14. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] See also Figures 1 to 5 , an automatic control anchor windlass hydraulic system, the automatic control anchor windlass hydraulic system comprising an oil tank 1, a constant pressure variable pump 2, an oil return filter 5, a multi-way reversing valve 7, a balance valve 8, an electromagnetic reversing valve 13 and a brake cylinder 14;

[0031] The oil outlet of the oil tank 1 is connected to the oil inlet end of the constant pressure variable pump 2, the oil outlet end of the constant pressure variable pump 2 is connected to the oil inlet end of a one-way valve 11, the oil outlet end of the one-way valve 11 is connected to the oil inlet end of the two-way pressure compensator 6, the oil outlet end of the two-way pressure compensator 6 is connected to the oil inlet end of the multi-way reversing valve 7, the oil outlet end of the multi-way reversing valve 7 is connected to the oil inlet end of the balance valve 8, and the oil outlet end of the balance valve 8 is connected to the motor 10;

[0032] The oil inlet of the oil tank 1 is connected to the oil outlet end of the return oil filter 5, the oil inlet end of the return oil filter 5 is connected to the oil outlet end of the cooler 4, the oil inlet end of the cooler 4 is connected to the oil outlet end of the electromagnetic reversing valve 13, the oil inlet end of the electromagnetic reversing valve 13 is connected to the oil outlet end of the brake cylinder 14, the oil inlet end of the brake cylinder 14 is connected to the oil outlet end of the electromagnetic reversing valve 13, the oil inlet end of the electromagnetic reversing valve 13 is connected to the oil outlet end of the electric proportional pressure reducing valve 12, the oil inlet end of the electric proportional pressure reducing valve 12 is connected to a one-way valve 11, and the oil circuit between the two-way pressure compensator 6 is connected.

[0033] The constant pressure variable pump 2 comprises an oil pump 2.1 and a variable oil cylinder 2.3. The oil pump 2.1 is connected to the motor 2.2. The oil inlet end of the oil pump 2.1 is connected to the oil outlet of the oil tank 1. The oil outlet end of the oil pump 2.1 is connected to the oil inlet end of the variable oil cylinder 2.3. The oil outlet end of the variable oil cylinder 2.3 is connected to the oil inlet end of a reversing valve 2.4. The oil outlet end of the reversing valve 2.4 is connected to the oil inlet end of a pressure cut-off valve 2.5. The oil outlet end of the oil pump 2.1 is connected to the oil inlet end of a reversing valve 2.4. The oil outlet end of the pressure cut-off valve 2.5 is connected to the oil inlet end of a check valve 11 via the P1 port.

[0034] The multi-way reversing valve 7 includes two reversing valves 7.1 and a shuttle valve 7.2. The oil inlet end of the two reversing valves 7.1 is connected to the oil outlet end of the two-way pressure compensator 6, the oil outlet end of the two reversing valves 7.1 is connected to the oil inlet end of the shuttle valve 7.2, and the oil outlet end of the shuttle valve 7.2 is connected to the oil inlet end of the balance valve 8.

[0035] Two safety valves 9.2 and one safety valve 9.1 are arranged in sequence between the oil circuits of the multi-way reversing valve 7 and the balancing valve 8.

[0036] The A1 port of the multi-way reversing valve 7 is connected to the oil inlet P3 of the balancing valve 8, the oil inlet end of the first safety valve 9.1 and the oil outlet end of the second safety valve 9.2, and the B port of the multi-way reversing valve 7 is connected to the oil inlet of the second safety valve 9.2, the control oil port X3 of the balancing valve 8, and the oil outlet end of the first safety valve 9.1.

[0037] The oil outlet end of the two-way pressure compensator 6 is communicated with the P2 port of the multi-way reversing valve 7 , and the control oil port X1 of the two-way pressure compensator 6 is communicated with the load port X2 of the multi-way reversing valve 7 .

[0038] The return oil filter 5 comprises a filter 5.1, a differential pressure alarm switch 5.2 and two non-return valves 5.3. The oil outlet end of the filter 5.1 is connected to the oil inlet of the oil tank 1, and the oil inlet end of the filter 5.1 is connected to the oil outlet end of the cooler 4. The differential pressure alarm switch 5.2 and the two non-return valves 5.3 are arranged on the filter 5.1.

[0039] The oil inlet end of the three safety valves 3 is connected to a one-way valve 11 and the oil circuit between the two-way pressure compensator 6 , and the oil outlet end of the three safety valves 3 is connected to the oil inlet of the oil tank 1 .

[0040] The oil inlet end of the cooler 4 is connected to the T2 port of the electromagnetic reversing valve 13, the B3 port of the electromagnetic reversing valve 13 is connected to the oil outlet end of the brake cylinder 14, the oil inlet end of the brake cylinder 14 is connected to the A3 port of the electromagnetic reversing valve 13, and the P3 port of the electromagnetic reversing valve 13 is connected to the oil outlet end of the electric proportional pressure reducing valve 12.

[0041] The balance valve 8 is connected to the A2 port of the motor 10 via the P4 port, and the B2 port of the motor 10 is connected to the oil tank 1 .

[0042] The principle of the present invention is described as follows:

[0043] The hydraulic system forms a flow adaptive system through the constant pressure variable pump 2, the multi-way reversing valve 7 and the two-way pressure compensator 6. The flow output by the constant pressure variable pump 2 matches the load speed. The pressure oil output by the constant pressure variable pump 2 enters the oil inlet of the multi-way reversing valve 7 after passing through the two-way pressure compensator 6. The forward and reverse rotation of the motor 10 is controlled by controlling the valve core reversing of the multi-way reversing valve 7, thereby controlling the anchor retracting and releasing action of the anchor windlass. When the anchor windlass is retracting the anchor, oil is discharged from the A1 port of the multi-way reversing valve 7 and oil is inlet from the A2 port of the motor 10; when the anchor windlass is releasing the anchor, oil is discharged from the B1 port of the multi-way reversing valve, and at the same time, the control oil port X3 of the balancing valve 8 is When the pressure rises to a certain value, the main valve core of the balance valve 8 is opened, and the force of the anchor and the anchor chain acting on the motor when dropping the anchor can be counteracted by the balance valve 8; the first safety valve 9.1 and the second safety valve 9.2 are used to control the maximum pressure of the motor A2 port and the B2 port to prevent the motor A2 port and the B2 port from being too high; the two-way differential pressure compensator 6 (fixed differential pressure reducing valve) can keep the pressure difference between the inlet and outlet of the multi-way reversing valve 7 constant. When the valve core opening of the multi-way reversing valve is constant, the flow through the multi-way reversing valve 7 (the flow entering the motor) is a fixed value, which can ensure that the rotation speed of the anchor windlass motor is not affected by load fluctuations;

[0044] In the brake cylinder control circuit, the pressure oil output by the constant pressure variable pump 2 enters the oil inlet of the electromagnetic reversing valve 13 after passing through the electric proportional pressure reducing valve 12. The valve core reversing of the electromagnetic reversing valve 13 is controlled to control the action of the brake cylinder, thereby controlling the opening and closing of the anchor machine brake. During the anchoring process of the anchor machine, the oil pressure entering the brake cylinder 14 is changed by controlling the electrical signal of the electric proportional pressure reducing valve 12, thereby changing the braking force of the anchor machine brake. Combined with the anchor chain wheel speed monitoring sensor, automatic closed-loop control of the anchor chain lowering speed when anchoring can be achieved.

[0045] Embodiment 1:

[0046] An automatic control anchor windlass hydraulic system, the automatic control anchor windlass hydraulic system comprises an oil tank 1, a constant pressure variable pump 2, an oil return filter 5, a multi-way reversing valve 7, a balancing valve 8, an electromagnetic reversing valve 13 and a brake cylinder 14; the oil outlet of the oil tank 1 is connected to the oil inlet end of the constant pressure variable pump 2, the oil outlet end of the constant pressure variable pump 2 is connected to the oil inlet end of a one-way valve 11, the oil outlet end of the one-way valve 11 is connected to the oil inlet end of a two-way pressure compensator 6, the oil outlet end of the two-way pressure compensator 6 is connected to the oil inlet end of the multi-way reversing valve 7, the oil outlet end of the multi-way reversing valve 7 is connected to the oil inlet end of the balancing valve 8, and the oil outlet end of the balancing valve 8 is connected to the motor 10; The oil inlet of the oil tank 1 is connected to the oil outlet end of the return oil filter 5, the oil inlet end of the return oil filter 5 is connected to the oil outlet end of the cooler 4, the cooler 4 and the return oil filter 5 are mainly used to cool and filter the hydraulic oil in the system, the oil inlet end of the cooler 4 is connected to the oil outlet end of the electromagnetic reversing valve 13, the oil inlet end of the electromagnetic reversing valve 13 is connected to the oil outlet end of the brake cylinder 14, the oil inlet end of the brake cylinder 14 is connected to the oil outlet end of the electromagnetic reversing valve 13, the oil inlet end of the electromagnetic reversing valve 13 is connected to the oil outlet end of the electric proportional pressure reducing valve 12, the oil inlet end of the electric proportional pressure reducing valve 12 is connected to a one-way valve 11, and the oil circuit between the two-way pressure compensator 6 is connected.

[0047] When the present invention is used, the pressure oil output by the constant pressure variable pump 2 enters the oil inlet of the multi-way reversing valve 7 through the two-way pressure compensator 6, and the forward and reverse rotation of the motor 10 is controlled by controlling the valve core reversal of the multi-way reversing valve 7, thereby controlling the anchor retracting and releasing action of the anchor windlass. When the anchor windlass is retracting the anchor, the A1 port of the multi-way reversing valve 7 discharges oil, and the A2 port of the motor 10 enters oil; when the anchor windlass is releasing the anchor, the B1 port of the multi-way reversing valve discharges oil, and at the same time, the pressure of the control oil port X3 of the balancing valve 8 increases to a certain value and then the main valve core of the balancing valve 8 is opened, and the balancing valve 8 can counteract and offset the force of the anchor and the anchor chain on the motor when releasing the anchor; the two-way pressure difference compensator 6 (fixed differential pressure reducing valve) makes the multi-way reversing valve The pressure difference between the inlet and outlet of the oil port 7 is kept constant. When the valve core opening of the multi-way reversing valve is constant, the flow rate through the multi-way reversing valve 7 is a constant value; in the brake cylinder control circuit, the pressure oil output by the constant pressure variable pump 2 enters the oil inlet of the electromagnetic reversing valve 13 after passing through the electric proportional pressure reducing valve 12. The valve core reversing of the electromagnetic reversing valve 13 is controlled to control the action of the brake cylinder, thereby controlling the opening and closing of the anchor brake. The oil pressure entering the brake cylinder 14 is changed by controlling the electrical signal of the electric proportional pressure reducing valve 12, thereby changing the braking force of the anchor brake. Combined with the anchor chain wheel speed monitoring sensor, automatic closed-loop control of the anchor chain lowering speed when dropping anchor can be achieved.

[0048] Embodiment 2:

[0049] Embodiment 2 is substantially the same as Embodiment 1, except that:

[0050] An automatic control anchor winch hydraulic system, the constant pressure variable pump 2 comprises an oil pump 2.1 and a variable oil cylinder 2.3, the oil pump 2.1 is connected to a motor 2.2, the oil inlet end of the oil pump 2.1 is connected to the oil outlet of the oil tank 1, the oil outlet end of the oil pump 2.1 is connected to the oil inlet end of the variable oil cylinder 2.3, the oil outlet end of the variable oil cylinder 2.3 is connected to the oil inlet end of a reversing valve 2.4, the oil outlet end of the reversing valve 2.4 is connected to the oil inlet end of a pressure cut-off valve 2.5, the oil outlet end of the oil pump 2.1 is connected to the oil inlet end of a reversing valve 2.4, the oil outlet end of the pressure cut-off valve 2.5 is connected to the oil inlet end of a check valve 11 through a P1 port.

[0051] Embodiment 3:

[0052] Embodiment 3 is substantially the same as Embodiment 2, except that:

[0053] An automatic control anchor winch hydraulic system, the multi-way reversing valve 7 comprises two reversing valves 7.1 and a shuttle valve 7.2, the oil inlet end of the two reversing valves 7.1 is connected to the oil outlet end of the two-way pressure compensator 6, the oil outlet end of the two reversing valves 7.1 is connected to the oil inlet end of the shuttle valve 7.2, and the oil outlet end of the shuttle valve 7.2 is connected to the oil inlet end of the balance valve 8; two safety valves 9.2 and a safety valve 9.1 are arranged in sequence between the oil circuits of the multi-way reversing valve 7 and the balance valve 8; the multi-way reversing valve 7 is connected to the oil circuit of ... The A1 port of the directional valve 7 is connected with the oil inlet P3 of the balancing valve 8, the oil inlet end of the first safety valve 9.1 is connected with the oil outlet end of the second safety valve 9.2, the B port of the multi-way directional valve 7 is connected with the oil inlet of the second safety valve 9.2, the control oil port X3 of the balancing valve 8, and the oil outlet end of the first safety valve 9.1, the oil outlet end of the two-way pressure compensator 6 is connected with the P2 port of the multi-way directional valve 7, and the control oil port X1 of the two-way pressure compensator 6 is connected with the load port X2 of the multi-way directional valve 7.

[0054] The method or process of adding a component.

[0055] Embodiment 4:

[0056] Embodiment 4 is substantially the same as Embodiment 3, except that:

[0057] An automatic control anchor winch hydraulic system, the return oil filter 5 comprises a filter 5.1, a pressure difference alarm switch 5.2 and two check valves 5.3, the oil outlet end of the filter 5.1 is connected to the oil inlet of the oil tank 1, the oil inlet end of the filter 5.1 is connected to the oil outlet end of the cooler 4, the pressure difference alarm switch 5.2 and the two check valves 5.3 are arranged on the filter 5.1; the oil inlet end of the three safety valves 3 is connected to a check valve 11, the oil circuit between the two-way pressure compensator 6 is connected, the oil outlet end of the three safety valves 3 is connected to the oil inlet of the oil tank 1, the three safety valves 3 mainly play a pressure limiting protection role in the hydraulic system to prevent the pressure in the hydraulic oil pipe of the hydraulic system from being too high and causing danger; the cooler 4 The oil inlet end is connected to the T2 port of the electromagnetic reversing valve 13, the B3 port of the electromagnetic reversing valve 13 is connected to the oil outlet end of the brake cylinder 14, the oil inlet end of the brake cylinder 14 is connected to the A3 port of the electromagnetic reversing valve 13, and the P3 port of the electromagnetic reversing valve 13 is connected to the oil outlet end of the electric proportional pressure reducing valve 12; the balance valve 8 is connected to the A2 port of the motor 10 via the P4 port, the B2 port of the motor 10 is connected to the oil tank 1, the A3 port of the electromagnetic reversing valve 13 is connected to the rod cavity of the brake cylinder 14, the B3 port of the electromagnetic reversing valve 13 is connected to the rodless cavity of the brake cylinder 14, and the oil return port T2 of the electromagnetic reversing valve 13 is connected to the oil tank 1 after passing through the cooler 4 and the oil return filter 5 through the return oil pipeline.

[0058] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. An automatic control anchor winch hydraulic system, characterized in that The automatic control anchor winch hydraulic system comprises an oil tank (1), a constant pressure variable pump (2), an oil return filter (5), a multi-way reversing valve (7), a balancing valve (8), an electromagnetic reversing valve (13) and a brake cylinder (14); The oil outlet of the oil tank (1) is connected to the oil inlet end of the constant pressure variable pump (2), the oil outlet end of the constant pressure variable pump (2) is connected to the oil inlet end of a one-way valve (11), the oil outlet end of the one-way valve (11) is connected to the oil inlet end of a two-way pressure compensator (6), the oil outlet end of the two-way pressure compensator (6) is connected to the oil inlet end of a multi-way reversing valve (7), the oil outlet end of the multi-way reversing valve (7) is connected to the oil inlet end of a balancing valve (8), and the oil outlet end of the balancing valve (8) is connected to a motor (10); The oil inlet of the oil tank (1) is connected to the oil outlet of the return oil filter (5), the oil inlet of the return oil filter (5) is connected to the oil outlet of the cooler (4), the oil inlet of the cooler (4) is connected to the oil outlet of the electromagnetic reversing valve (13), the oil inlet of the electromagnetic reversing valve (13) is connected to the oil outlet of the brake cylinder (14), the oil inlet of the brake cylinder (14) is connected to the oil outlet of the electromagnetic reversing valve (13), the oil inlet of the electromagnetic reversing valve (13) is connected to the oil outlet of the electric proportional pressure reducing valve (12), the oil inlet of the electric proportional pressure reducing valve (12) is connected to a one-way valve (11), and the oil circuit between the two-way pressure compensator (6) is connected; The return oil filter (5) comprises a filter (5.1), a differential pressure alarm switch (5.2) and two one-way valves (5.3); the oil outlet end of the filter (5.1) is connected to the oil inlet of the oil tank (1); the oil inlet end of the filter (5.1) is connected to the oil outlet end of the cooler (4); the differential pressure alarm switch (5.2) and the two one-way valves (5.3) are arranged on the filter (5.1); The oil inlet end of the three safety valves (3) is connected to a one-way valve (11) and the oil path between the two-way pressure compensator (6), and the oil outlet end of the three safety valves (3) is connected to the oil inlet of the oil tank (1); The oil inlet end of the cooler (4) is connected to the T2 port of the electromagnetic reversing valve (13), the B3 port of the electromagnetic reversing valve (13) is connected to the oil outlet end of the brake cylinder (14), the oil inlet end of the brake cylinder (14) is connected to the A3 port of the electromagnetic reversing valve (13), and the P3 port of the electromagnetic reversing valve (13) is connected to the oil outlet end of the electric proportional pressure reducing valve (12); The balancing valve (8) is connected to the A2 port of the motor (10) via the P4 port, and the B2 port of the motor (10) is connected to the oil tank (1); In the control circuit of the brake cylinder (14), the pressure oil output by the constant pressure variable pump (2) enters the oil inlet of the electromagnetic reversing valve (13) after passing through the electric proportional pressure reducing valve (12). The valve core reversal of the electromagnetic reversing valve (13) is controlled to control the action of the brake cylinder (14), control the opening and closing of the anchor brake, and control the electrical signal of the electric proportional pressure reducing valve (12) to change the oil pressure entering the brake cylinder (14) to change the braking force of the anchor brake, thereby realizing automatic closed-loop control of the anchor chain lowering speed when anchoring.

2. The automatic control anchor windlass hydraulic system according to claim 1, characterized in that: The constant pressure variable displacement pump (2) comprises an oil pump (2.1) and a variable oil cylinder (2.3); the oil pump (2.1) is connected to the motor (2.2); the oil inlet end of the oil pump (2.1) is connected to the oil outlet of the oil tank (1); the oil outlet end of the oil pump (2.1) is connected to the oil inlet end of the variable oil cylinder (2.3); the oil outlet end of the variable oil cylinder (2.3) is connected to the oil inlet end of a reversing valve (2.4); the oil outlet end of the reversing valve (2.4) is connected to the oil inlet end of a pressure cut-off valve (2.5); the oil outlet end of the oil pump (2.1) is connected to the oil inlet end of a reversing valve (2.4); the oil outlet end of the pressure cut-off valve (2.5) is connected to the oil inlet end of a check valve (11) via a P1 port.

3. The automatic control anchor winch hydraulic system according to claim 1, characterized in that: The multi-way reversing valve (7) comprises two reversing valves (7.1) and a shuttle valve (7.2); the oil inlet ends of the two reversing valves (7.1) are connected to the oil outlet ends of the two-way pressure compensator (6); the oil outlet ends of the two reversing valves (7.1) are connected to the oil inlet end of the shuttle valve (7.2); and the oil outlet end of the shuttle valve (7.2) is connected to the oil inlet end of the balance valve (8).

4. The automatic control anchor windlass hydraulic system according to claim 3, characterized in that: Two safety valves (9.2) and a safety valve (9.1) are arranged in sequence between the oil circuits of the multi-way reversing valve (7) and the balancing valve (8).

5. The automatic control anchor winch hydraulic system according to claim 4, characterized in that: The A1 port of the multi-way reversing valve (7) is connected to the oil inlet P3 of the balancing valve (8), the oil inlet end of the first safety valve (9.1) and the oil outlet end of the second safety valve (9.2); the B port of the multi-way reversing valve (7) is connected to the oil inlet of the safety valve (9.2), the control oil port X3 of the balancing valve (8) and the oil outlet end of the first safety valve (9.1).

6. The automatic control anchor windlass hydraulic system according to claim 1, characterized in that: The oil outlet end of the two-way pressure compensator (6) is connected to the P2 port of the multi-way reversing valve (7), and the control oil port X1 of the two-way pressure compensator (6) is connected to the load port X2 of the multi-way reversing valve (7).

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