A flexible energy-saving speed-limiting control system for large anchor machine free anchoring

Abstract

A flexible energy-saving speed limit control system for free anchoring of a large anchor winch includes an anchor winch brake oil cylinder, a one-way throttle valve, a two-position four-way electromagnetic reversing valve, a pressure reducing valve, a clutch oil 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 winch brake oil cylinder through a pressure reducing valve, an electromagnetic 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, the clutch oil cylinder is connected to the two-position four-way electromagnetic reversing valve and the pressure reducing valve, and a one-way throttle valve is installed on the clutch oil cylinder. The system can automatically adjust the electric proportional overflow valve at the pump outlet, thereby adjusting the size of the braking force. When the large anchor winch is anchored, the speed is limited within the required range to avoid impact and loss of control.

Description

Technical Field

[0001] The invention belongs to the technical field of brake control systems, and in particular relates to a large anchor machine free anchoring flexible energy-saving speed limit control system. Background Art

[0002] With the rapid development of the shipping industry, the requirements for deck machinery are getting higher and higher. Its safety has become an issue of increasing concern in the industry.

[0003] In marine hydraulic anchor winches, especially when anchor winches with a chain diameter of more than 90 are anchored, the anchor chain will bounce and impact greatly. Ordinary hydraulic brakes will have great impact and vibration when braking during anchoring, which will affect the safety of the anchor winch and the ship. How to limit the speed smoothly and stably when anchoring is the greatest guarantee for the safe operation of the anchor winch. Traditional anchor winch brakes are usually mechanical and require manual operation by seafarers. In emergency situations, they often fail to brake in time and cause danger; ordinary hydraulic control brakes have the characteristics of short time and high efficiency, but the braking force cannot be automatically adjusted during the anchoring process, and rapid braking will occur, causing a huge impact on the anchor winch. If the braking force is reduced, the braking force will not be enough when anchoring. Summary of the invention

[0004] The purpose of the present invention is to provide a flexible energy-saving speed limit control system for free anchoring of a large anchor machine, which 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 within the required range to avoid impact and loss of control.

[0005] In order to achieve the above purpose, a large anchor windlass free anchoring flexible energy-saving speed limit control system comprises an anchor windlass brake oil cylinder (1), a one-way throttle valve (2), a two-position four-way electromagnetic reversing valve (3), a pressure reducing valve (4), a clutch oil cylinder (5), a control one-way valve (6), a pressure gauge (7), a main one-way valve (8), a safety valve (9), and an electric proportional relief valve (10); one side of the oil outlet of the hydraulic pump is connected to the P port of the safety valve (9) through the main one-way valve (8), and the other side is connected to the working oil chamber of the anchor windlass brake oil cylinder (1) through the pressure reducing valve (4), the electromagnetic reversing valve (3), and the one-way throttle valve (2); the oil suction port is connected to the hydraulic oil tank through a hydraulic pipeline; the clutch oil cylinder (5) is connected to the two-position four-way electromagnetic reversing valve (3) and the pressure reducing valve (4).

[0006] The preferred embodiment of the present invention is that the anchor windlass brake oil cylinder (1) is a single-acting oil cylinder with a spring. When the two-position four-way electromagnetic reversing valve (3) is not energized, the B port of the two-position four-way electromagnetic reversing valve (3) is connected to the T port, the oil inlet of the anchor windlass brake oil cylinder (1) is depressurized, and the brake is braked by the spring force. When the two-position four-way electromagnetic reversing valve (3) is energized, the braking force of the brake is equal to the spring force minus the force of the oil inlet chamber of the oil cylinder, the electric proportional relief valve (10) is not energized, the pressure is 10 MPa, the brake is fully opened, and the anchor chain of the anchor windlass is in a free lowering state.

[0007] More preferably, when the two-position four-way electromagnetic reversing valve (3) is energized and the PLC measures that the anchoring speed exceeds a preset value, a current value is output to the electric proportional relief valve (10) to adjust the output pressure of the constant pressure variable pump.

[0008] More preferably, the adjustment range of the output pressure of the constant pressure variable pump is 3Mpa-8Mpa.

[0009] Preferably, the working pressure of the clutch oil cylinder (5) is 3 MPa, the clutch is achieved through a two-position four-way electromagnetic reversing valve (3), and the maximum pressure is limited by the pressure reducing valve (4).

[0010] Preferably, the one-way throttle valve (2) adjusts the release time of the anchor windlass brake, and the main safety valve (9) limits the maximum pressure of the pump pressure port, thereby achieving dual safety protection of the system.

[0011] Preferably, the anchor windlass brake cylinder (1), the one-way throttle valve (2), the two-position four-way electromagnetic reversing valve (3), the pressure reducing valve (4), the clutch cylinder (5), the pressure gauge (6), the one-way valve (7) and the safety valve (8) are each provided with two for backup.

[0012] The beneficial effects of the present invention are:

[0013] 1. A control pump is used to control the brake and clutch cylinder of the anchor winch. The main pump can be shut down during the free anchoring process of the anchor winch to reduce energy consumption. The auxiliary pump uses a constant pressure variable pump. When the control pressure is reached, the output flow of the pump decreases, thereby reducing energy consumption; 2. The design is that the two pumps are mutually standby. One pump can meet the control needs of the anchor winch. When one pump fails, the other pump automatically starts, which improves the reliability and safety of the control system. 3. The electromagnetic proportional relief valve (safety valve) is used to control the constant pressure variable point of the constant pressure variable pump. It can proportionally control the output pressure of the pump to ensure that the hydraulic oil pressure entering the brake cylinder is established as needed; so that the braking force is applied to the anchor winch smoothly as required. Compared with other braking methods, it reduces impact and vibration, and enhances reliability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the structure of the present invention. DETAILED DESCRIPTION

[0016] Embodiment 1

[0017] See also Figure 1 The present embodiment provides a large anchor windlass free anchoring flexible energy-saving speed limit control system, comprising an anchor windlass brake cylinder 1, a one-way throttle valve 2, a two-position four-way solenoid reversing valve 3, a pressure reducing valve 4, a clutch cylinder 5, a control one-way valve 6, a pressure gauge 7, a main one-way valve 8, a main safety valve 9 and an electric proportional relief valve 10; one side of the oil outlet of the hydraulic pump is connected to the P port of the main safety valve 9 through the main one-way valve 8, and the other side is connected to the working oil chamber of the anchor windlass brake cylinder 1 through the pressure reducing valve 4, the solenoid reversing valve 3, and the one-way throttle valve 2, the oil suction port is connected to the hydraulic oil tank through a hydraulic pipeline, and the clutch cylinder 5 is connected to the two-position four-way solenoid reversing valve 3 and the pressure reducing valve 4.

[0018] It also includes a 5.5kw motor 11, a constant pressure variable pump 12 and an oil tank 13. The oil suction port of the hydraulic pump 12 is connected to the hydraulic oil tank 13 through a hydraulic pipeline, and the oil outlet P is connected to the oil inlet of the relief valve 10 and the oil inlet of the pressure reducing valve 4 respectively; the oil outlet of the pressure reducing valve is connected to the P port of the electromagnetic reversing valve 3, and then connected to the inlet of the brake cylinder 1 through a hose via a single speed regulating valve. When the pressure of the pump reaches the set value of the relief valve 10, the constant pressure variable pump automatically realizes constant pressure and small displacement, and runs with minimum energy consumption.

[0019] The anchor windlass brake cylinder 1 is a single-acting cylinder with a spring. When the two-position four-way solenoid reversing valve 3 is not energized, the two-position four-way solenoid reversing valve 3B port is connected to the T port, the oil inlet of the anchor windlass brake cylinder 1 is depressurized, and the brake is braked by spring force. When the two-position four-way solenoid reversing valve 3 is energized, the braking force of the brake is equal to the spring force minus the force of the cylinder oil inlet chamber, the electric proportional relief valve 10 is not energized, the pressure is 10Mpa, the brake is fully opened, and the anchor chain of the anchor windlass is in a free lowering state.

[0020] The two-position four-way electromagnetic reversing valve 3 is energized, and when the PLC measures that the anchoring speed exceeds the preset value, the output current value is sent to the relief valve 10 to adjust the output pressure of the constant pressure variable pump.

[0021] The adjustment range of the output pressure of the constant pressure variable pump is 3Mpa-8Mpa.

[0022] The working pressure of the clutch cylinder 5 is 3Mpa. The clutch is realized by the two-position four-way electromagnetic reversing valve 3, and the maximum pressure is limited by the pressure reducing valve 4.

[0023] The one-way throttle valve 2 adjusts the release time of the anchor windlass brake, and the main safety valve 9 limits the maximum pressure of the pump pressure port to achieve double safety protection of the system.

[0024] The anchor windlass brake cylinder 1, the one-way throttle valve 2, the two-position four-way solenoid reversing valve 3, the pressure reducing valve 4, the clutch cylinder 5, the control one-way valve 6, the pressure gauge 7, and the main one-way valve 8 are all provided with two for backup.

[0025] The system uses an auxiliary pump to control the brake and clutch cylinder of the anchor winch. The main pump can be shut down during the free anchoring process of the anchor winch to reduce energy consumption. The auxiliary pump uses a constant pressure variable pump. When the control pressure is reached, the output flow of the pump decreases, thereby reducing energy consumption. The design is that the two pumps are mutually standby. One pump can meet the control needs of the anchor winch. When one pump fails, the other pump automatically starts, which improves the reliability and safety of the control system. The electromagnetic proportional relief valve is used to control the constant pressure variable point of the constant pressure variable pump. It can proportionally control the output pressure of the pump to ensure that the hydraulic oil pressure entering the brake cylinder is established as needed; so that the braking force is applied to the anchor winch smoothly as required. Compared with other braking methods, it reduces impact and vibration, and enhances reliability and safety.

[0026] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present invention.

Claims

1. A large anchor machine free anchoring flexible energy-saving speed limit control system, characterized in that: The invention comprises an anchor windlass brake oil cylinder (1), a one-way throttle valve (2), a two-position four-way electromagnetic reversing valve (3), a pressure reducing valve (4), a clutch oil cylinder (5), a control one-way valve (6), a pressure gauge (7), a main control one-way valve (8), a main control safety valve (9) and a relief valve (10); one side of the oil outlet of the hydraulic pump is connected to the P port of the main control safety valve (9) through the main control one-way valve (8), and the other side is connected to the working oil chamber of the anchor windlass brake oil cylinder (1) through the pressure reducing valve (4), the electromagnetic reversing valve (3) and the one-way throttle valve (2); the oil suction port is connected to the hydraulic oil tank through a hydraulic pipeline; the clutch oil cylinder (5) is connected to the two-position four-way electromagnetic reversing valve (3) and the pressure reducing valve (4); the clutch oil cylinder (5) is provided with a control one-way valve (6) and a pressure gauge (7); the anchor windlass brake oil cylinder (1) is a single-acting oil cylinder with a spring; when the two-position four-way electromagnetic reversing valve (3) is not energized, the two-position four-way electromagnetic reversing valve (3) is The B port of the electromagnetic reversing valve (3) is connected to the T port, the oil inlet of the anchor windlass brake cylinder (1) is depressurized, and the brake is braked by spring force. When the two-position four-way electromagnetic reversing valve (3) is energized, the braking force of the brake is equal to the spring force minus the force of the oil inlet chamber of the cylinder, the relief valve (10) is not energized, the pressure is 10Mpa, the brake is fully opened, and the anchor chain of the anchor windlass is in a free lowering state; when the two-position four-way electromagnetic reversing valve (3) is energized and the PLC measures that the anchoring speed exceeds the preset value, the current value is output to the relief valve (10) to adjust the output pressure of the constant pressure variable pump; the working pressure of the clutch cylinder (5) is 3Mpa, and the clutch is realized by the two-position four-way electromagnetic reversing valve (3), and the maximum pressure is limited by the pressure reducing valve (4); the one-way throttle valve (2) adjusts the release time of the anchor windlass brake, and the main control safety valve (9) limits the maximum pressure of the pump pressure port, so as to realize the double safety protection of the system.

2. A large anchor machine free anchoring flexible energy-saving speed limit control system according to claim 1, characterized in that: The adjustment range of the output pressure of the constant pressure variable pump is 3Mpa-8Mpa.

3. A large anchor machine free anchoring flexible energy-saving speed limit control system according to claim 1, characterized in that: The anchor windlass brake cylinder (1), the one-way throttle valve (2), the two-position four-way electromagnetic reversing valve (3), the pressure reducing valve (4), the clutch cylinder (5), the control one-way valve (6), the pressure gauge (7), and the main control one-way valve (8) are each provided with two for backup.

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