Hydraulic motor control valve group

Abstract

The utility model relates to the technical field of anchor winches, in particular to a hydraulic motor control valve group, which comprises a load control valve arranged on the oil return side of a motor and used for controlling the oil return flow of the motor, so that the action is stable when a load-bearing object of the winch descends; the shuttle valve is arranged between the oil return side and the oil inlet side of the motor, and the shuttle valve is used for leading out pressure signal oil; the load control valve is arranged on the oil return side of the motor, when a winch load-bearing object descends, the winch load-bearing object can stably descend, meanwhile, the load control valve is arranged on the output end of the shuttle valve, and the logic valve is used for controlling a brake mechanism of the motor to conduct braking and release braking according to pressure oil signals. When pressure difference exists between the oil return side and the oil inlet side of the motor, the logic valve controls the brake mechanism to act under the action of the pressure signal oil, so that the brake mechanism relieves braking, and stability, safety and reliability of equipment can be guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of anchor windlasses, and particularly to a hydraulic motor control valve group. Background Art

[0002] An anchor windlass is a kind of deck machinery on a ship, used for retrieving and paying out the anchor and anchor chain. An electric anchor windlass is a light and small lifting device that uses a drum to wind a wire rope or chain to lift or tow heavy objects, also known as a winch. It mainly consists of a hydraulic motor (low-speed or high-speed motor), a hydraulic normally closed multi-disc brake, a planetary gearbox, a clutch (optional), a drum, a support shaft, a frame, a rope presser (optional), etc.

[0003] When the load of the anchor windlass descends, due to the inevitable shaking of the goods, the anchor windlass will always bear fluctuating loads, and the equipment itself will be continuously subjected to vibration and impact, resulting in a decrease in stability and safety reliability. This project aims to develop a hydraulic motor control valve group to solve the stability problem of the anchor windlass when the load descends. Summary of the Utility Model

[0004] In view of at least one of the above technical problems, this application provides a hydraulic motor control valve group, adopting the following technical solutions to solve the problems.

[0005] According to one aspect of this application, a hydraulic motor control valve group is provided, including:

[0006] A load control valve, which is arranged on the oil return side of the motor and is used to control the oil return flow of the motor to make the operation smooth when the load of the windlass descends;

[0007] A shuttle valve, which is arranged between the oil return side and the oil inlet side of the motor and is used to draw out the pressure signal oil; and

[0008] A logic valve, which is arranged at the output end of the shuttle valve and is used to control the braking mechanism of the motor to brake and release the brake according to the pressure oil signal.

[0009] The present utility model is further arranged such that it further includes a safety valve, which is arranged between the oil return side and the oil inlet side of the motor.

[0010] The present utility model is further arranged such that the shuttle valve is also connected to the oil return side of the motor through a check valve.

[0011] The present utility model is further arranged such that the shuttle valve is connected to the logic valve through a filter and a pressure reducing valve.

[0012] The present utility model is further arranged such that the logic valve is a directional valve.

[0013] The utility model is further configured such that the logic valve is connected to the braking mechanism of the motor through a one-way throttle valve.

[0014] The utility model is further configured such that a pressure measuring joint is connected to the oil circuit between the one-way throttle valve and the braking mechanism of the motor.

[0015] The utility model is further configured to further include a control system, the control system includes a controller, and the controller is signal-connected to a load control valve, a shuttle valve, and a logic valve for controlling the operation of the load control valve, the shuttle valve, and the logic valve.

[0016] The utility model is further configured to further include a control system, and the controller is a PLC controller.

[0017] The utility model is further configured such that the braking mechanism is a hydraulic brake.

[0018] The present application has the following technical effects:

[0019] The utility model arranges the load control valve on the oil return side of the motor. When the load of the winch descends, the load of the winch can descend smoothly. At the same time, when there is a pressure difference between the oil return side and the oil inlet side of the motor, the logic valve controls the braking mechanism to act under the action of the pressure signal oil, so that the braking mechanism releases the brake, which can ensure the smoothness and safety reliability of the equipment. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is the structural diagram of the present application.

[0022] Reference Signs:

[0023] 1. Load control valve; 2. Check valve; 3. Safety valve; 4. Shuttle valve; 5. Filter; 6. Pressure reducing valve; 7. Check valve; 8. Directional valve; 9. One-way throttle valve; 10. Pressure measuring joint; 11. Valve block body. Detailed Embodiments

[0024] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0025] In this embodiment of the present application, as Figure 1 shown, a hydraulic motor control valve group is provided, including:

[0026] A load control valve 1, which is arranged on the oil return side of the motor. The load control valve 1 is used to control the oil return flow of the motor, so that the winch load descends smoothly. Both the oil return side and the oil inlet side of the motor are connected to the oil tank. By controlling the oil return flow of the motor, the rotation speed of the motor can be controlled, and thus the speed of the anchor winch when the winch load descends can be controlled.

[0027] A shuttle valve 4, which is arranged between the oil return side and the oil inlet side of the motor. The shuttle valve 4 is also connected to the oil return side of the motor through a check valve 2. The shuttle valve 4 is used to extract the pressure signal oil. The shuttle valve 4 has two inlets and one outlet, and is controlled by the fluid pressure difference between the two inlets, so that the inlet with the higher pressure is connected to the outlet. It receives the liquid flow from the oil return side and the oil inlet side of the motor and transmits the highest pressure to a separate outlet.

[0028] And including a logic valve, which is arranged at the output end of the shuttle valve 4. The logic valve is used to control the braking mechanism of the motor to brake and release the brake according to the pressure oil signal. The load control valve 1, the check valve 2, the safety valve 3, the shuttle valve 4, the filter 5, the pressure reducing valve 6, the check valve 7, the direction valve 8, the one-way throttle valve 9, and the pressure measuring joint 10 together constitute the valve group main body 11.

[0029] When the winch load descends, the pressure on the oil return side of the motor decreases, and the load control valve 1 acts, reducing the rotation speed of the motor and increasing the torque, so that the winch load descends smoothly. At the same time, when there is a pressure difference between the oil return side and the oil inlet side of the motor, the side with the higher pressure will be connected to the outlet of the shuttle valve 4, outputting the pressure signal oil and transmitting the pressure signal oil to the logic valve. The logic valve controls the braking mechanism to act under the action of the pressure signal oil, releasing the brake of the braking mechanism, thus ensuring the smoothness and safety reliability of the equipment.

[0030] In an embodiment of the present utility model, a safety valve 3 is further included. The safety valve 3 is arranged between the oil return side and the oil inlet side of the motor. The safety valve 3 can be a spring-type safety valve, whose function is to prevent the system pressure from exceeding the allowable range, avoid equipment damage and accidents, and can quickly release the pressure when abnormal conditions occur in the winch system, protecting the safety of personnel and equipment. Its working principle is that when the system pressure exceeds the set value, the safety valve automatically opens to release the excess pressure and restore the system pressure to the normal range.

[0031] In an embodiment of the present utility model, the shuttle valve 4 is connected to the logic valve through the filter 5 and the pressure reducing valve 6. The function of the filter 5 is to intercept and filter out possible impurities, particles, etc. in the winch system to prevent them from entering the system and reduce the wear and damage of the impurities to the winch equipment, prolonging the service life of the equipment.

[0032] In an embodiment of the present utility model, the logic valve is a direction valve 8. The direction valve 8 is used to control the flow direction of the fluid in the hydraulic system, and can realize the forward, reverse or stop flow of the fluid, and then control the braking mechanism of the winch to act, and it can respond quickly.

[0033] In an embodiment of the present utility model, the logic valve is connected to the braking mechanism of the motor through the one-way throttle valve 9. The one-way throttle valve 9 has the following functions: it can control the flow rate of the fluid in one direction, can adjust the passing flow rate according to needs, realize precise control of the flow rate, keep the running speed of the winch stable, and avoid speed fluctuations.

[0034] In an embodiment of the present utility model, a pressure measuring joint 10 is connected to the oil circuit between the one-way throttle valve 9 and the braking mechanism of the motor. The pressure measuring joint 10 is used to measure the pressure in the device and has the following functions: one is to provide a measurement interface, enabling a pressure sensor or a pressure gauge to access the control system to obtain pressure data; the second is to monitor the pressure state, real-time monitor the pressure change of the system to ensure its operation within the normal range; the third is the basis for fault diagnosis, helping to troubleshoot system faults and providing a reference for maintenance and repair; the fourth is convenient connection, and it can be quickly installed and disassembled.

[0035] In an embodiment of the present utility model, a control system is further included. The control system includes a controller, and the controller is a PLC controller. The controller is signal-connected to the load control valve 1, the shuttle valve 4 and the logic valve, and is used to control the operation of the load control valve 1, the shuttle valve 4 and the logic valve. Through the controller of the control system, the load control valve 1, the shuttle valve 4 and the logic valve can be overall controlled to ensure their cooperation.

[0036] Working principle: When the load of the winch descends, the pressure on the oil return side of the motor decreases, and the load control valve 1 acts, with the opening amplitude decreasing, which reduces the rotational speed of the motor and increases the torque, thereby enabling the load of the winch to descend smoothly. At the same time, when there is a pressure difference between the oil return side and the oil inlet side of the motor, the oil inlet side with a higher pressure will be connected to the outlet of the shuttle valve 4 to output pressure signal oil, and transmit this pressure signal oil to the logic valve. The logic valve outputs the pressure signal oil to the braking mechanism, causing the braking mechanism to perform a contraction action and release the braking, thus ensuring the smoothness, safety, and reliability of the equipment.

[0037] The above is only a preferred embodiment of the present application and does not impose any form of limitation on the present application. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present application by using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present application, or modify it into an equivalent embodiment with equivalent changes. Therefore, all equivalent changes made according to the shape, structure, and principle of the present application without departing from the content of the technical solution of the present application shall be covered by the protection scope of the present application.

Claims

1. A hydraulic motor control valve group, characterized in that: include: A load control valve (1), the load control valve (1) being arranged on the oil return side of the motor, the load control valve (1) being used to control the oil return flow of the motor so that the winch can move smoothly when the load-bearing object is lowered; A shuttle valve (4), the shuttle valve (4) being arranged between the oil return side and the oil inlet side of the motor, the shuttle valve (4) being used to lead out the pressure signal oil; as well as A logic valve is arranged at the output end of the shuttle valve (4), and is used to control the brake mechanism of the motor to brake and release the brake according to the pressure signal oil.

2. A hydraulic motor control valve group according to claim 1, characterized in that: It also comprises a safety valve (3), wherein the safety valve (3) is arranged between the oil return side and the oil inlet side of the motor.

3. The hydraulic motor control valve group according to claim 1, characterized in that: The shuttle valve (4) is also connected to the oil return side of the motor via a one-way valve (2).

4. A hydraulic motor control valve assembly according to claim 1, characterized in that: The shuttle valve (4) is connected to the logic valve via a filter (5) and a pressure reducing valve (6).

5. The hydraulic motor control valve assembly according to claim 1, characterized in that: The logic valve is a directional valve (8).

6. The hydraulic motor control valve assembly according to claim 1, characterized in that: The logic valve is connected to the brake mechanism of the motor via a one-way throttle valve (9).

7. A hydraulic motor control valve assembly according to claim 6, characterized in that: The oil circuit between the one-way throttle valve (9) and the brake mechanism of the motor is connected with a pressure measuring joint (10).

8. The hydraulic motor control valve assembly according to claim 1, characterized in that: It also includes a control system, the control system including a controller, the controller signal connecting the load control valve (1), the shuttle valve (4) and the logic valve, and is used to control the operation of the load control valve (1), the shuttle valve (4) and the logic valve.

9. A hydraulic motor control valve assembly according to claim 8, characterized in that: The controller is a PLC controller.

10. The hydraulic motor control valve assembly according to claim 1, characterized in that: The braking mechanism is a hydraulic brake.

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