KR102610221B1 - steering gear for ships - Google Patents

Abstract

The steering device of a ship according to the present invention is mounted on a ship and is connected to an operating cylinder for changing the direction of the rudder or outboard motor, and first and second ports for operating the operating cylinder, so as to supply hydraulic oil. First and second supply pipes connected to the helium pump of the handle, a hydraulic pump installed in the power pack and driven by a motor, third and fourth supply pipes connected to the hydraulic pump and the first and second supply pipes, and First and second solenoid valves installed in the third and fourth supply pipes to selectively supply hydraulic oil supplied from the hydraulic pump to the first and second supply pipes, and first and second solenoid valves installed in the third and fourth supply pipes. It is provided with a shock absorber to buffer the pressure caused by the supply of hydraulic oil supplied by the operation of the valve, and a control unit to operate the first and second solenoid valves for the remote steering.

Description

Steering gear for ships}

The present invention relates to a steering device, and more specifically, to a steering device for a ship that can reduce shock, vibration, and noise caused by the rapid supply of hydraulic oil to the operating cylinder when steering a ship.

In general, various ships are equipped with a steering device to operate a rudder, which is a means for adjusting the direction of travel. Such steering devices include known hydraulic steering devices, manual hydraulic steering devices, parallel helium pump steering devices, and manual switching steering devices.

Among the above steering devices, mechanical steering devices are used for large ships, while small ships rely on manual hydraulic steering devices. Since the manual steering device is operated by manpower when sailing, it is difficult to steer smoothly due to the force of the waves on the rudder when docking at a pier or when large waves hit, raising the risk of safety accidents such as ship capsize.

The conventional manual steering system is used by installing a hydraulic cylinder on the rudder, attaching a handle to the opitroll (hydraulic pump for steering gear), and connecting the hydraulic cylinder and the opitroll with a hydraulic hose. The cylinder, helium pump, and hydraulic pump are used in the conventional manual steering system. , there is a method of controlling it by connecting a hydraulic solenoid valve or an electric motor.

Meanwhile, it is advantageous for outboard ships to be equipped with an automatic steering system (Auto Pilot System) in addition to hydraulic power pegs, but for outboard ships smaller than this, it is difficult to apply the method mounted on outboard ships as is. In order to introduce a semi-hydraulic power pack and automatic steering system to an outboard vessel, interlocking and error problems must be resolved while modifying it with specialized equipment.

In relation to this, a steering device is disclosed in Republic of Korea Patent No. 1294960, and an automatic steering automatic control device for ships is disclosed in Republic of Korea Patent No. 0429068.

The steering device moves the piston forward or backward by selecting an air input hose to discharge air supplied from the air compressor according to the operation of the direction control valve, and the slide part moves forward or backward according to the movement of the piston, so that the operating part The outboard motor of the ship is configured to rotate by pushing or pulling the outboard motor from the side.

And the automatic steering device for a ship includes an electronic control unit including a function selection switch unit, and a spool for connecting a handle connected to the steering handle; A cylinder operated by oil inside the high-pressure oil hose; It includes a tiller that changes the linear motion of the cylinder into rotational motion and a rudder connected to it.

The steering device as described above supplies pneumatic or hydraulic oil to the hydraulic cylinder for steering. A valve to control the supply of hydraulic oil is installed in the hydraulic oil supply pipe connected to the port for supplying hydraulic oil to each port of the hydraulic cylinder. The solenoid valve used as a conventional control valve has a problem in that it does not smoothly control the flow rate to control the hydraulic cylinder, so an impact force is applied to the rudder or outboard motor when steering, and it further causes noise.

The generation of such impact force and noise has the problem of lowering the reliability of the operation of the ship.

Republic of Korea Patent No. 1294960, Republic of Korea Patent No. 0429068, Republic of Korea Patent No. 1720713,

The present invention is intended to solve the problems described above, and when providing steering force using hydraulic oil through steering through the ship's steering handle and remote control or knob steering, it buffers the pressure according to the supply of hydraulic oil and maintains a constant pressure of hydraulic oil. The aim is to provide a steering device for ships that can absorb shock and reduce noise.

The marine steering device of the present invention to achieve the above object is

An operating cylinder mounted on a ship to change the direction of the rudder or outboard motor,

First and second supply pipes connected to the first and second ports for operating the operating cylinder and connected to the helium pump of the steering wheel to supply hydraulic oil;

Installed in the power pack, a hydraulic pump driven by a motor, third and fourth supply pipes connecting the hydraulic pump and the first and second supply pipes,

First and second solenoid valves installed in the third and fourth supply pipes to selectively supply hydraulic oil supplied from the hydraulic pump to the first and second supply pipes, and first and second solenoid valves installed in the third and fourth supply pipes to selectively supply hydraulic oil supplied from the hydraulic pump to the first and second supply pipes. It is provided with a buffer for buffering the pressure caused by the supply of hydraulic oil supplied by the operation of the solenoid valve, and a control unit for operating the first and second solenoid valves for the remote steering.

In the present invention, the shock absorber includes a case having a space in which hydraulic oil is stored, and a buffer piston installed in the space of the case and pressed by a spring to cushion hydraulic oil flowing into the case.

The marine steering device of the present invention to achieve the above object is

An operating cylinder mounted on a ship to change the direction of the rudder or outboard motor,

First and second supply pipes connected to the first and second ports for operating the operating cylinder and connected to the helium pump of the steering wheel to supply hydraulic oil;

Installed in the power pack, a hydraulic pump driven by a motor, third and fourth supply pipes connecting the hydraulic pump and the first and second supply pipes,

First and second solenoid valves are installed on the third and fourth supply pipes to selectively supply hydraulic oil supplied from the hydraulic pump to the first and second supply pipes, and the first and second solenoid valves provide a buffer Its characteristic feature is that it is equipped with wealth.

The marine steering device according to the present invention can prevent vibration and noise caused by hydraulic oil supply shock due to the operation of the first and second solenoid valves for hydraulic oil for steering when steering through the ship's steering handle and remote control steering. Reliability can be improved.

1 is a cross-sectional view schematically showing a marine steering device according to the present invention;
Figure 2 is a partially cut cross-sectional view showing the first solenoid valve and shock absorber installed in the third supply pipe shown in Figure 1;
Figure 3 shows another embodiment of a marine steering device according to the present invention, showing a solenoid valve with a buffer portion installed.

The present invention relates to a steering device for ships, and an embodiment is shown in Figure 1.

Referring to the drawing, the steering device 10 according to the present invention can be steered using water steering and a remote controller, and is installed at the rear of the ship to change the direction of the rudder or outboard motor for steering. It is provided with an operating cylinder (20). A steering angle sensor 101 may be installed in the operating cylinder 20. The operating cylinder may be a double-acting cylinder.

And first and second supply pipes (21) and (22) for supplying and discharging hydraulic oil for both ports (20a) and (20b) of the operating cylinder (20) are connected, and these first and second supply pipes (21) ( 22) is connected to a helium pump (not shown) installed on the steering handle 30 side for steering the ship.

And the steering device constructs a remote control system by obtaining a power unit (40), a control unit, and a remote controller (50).

The power unit 40 includes a hydraulic oil tank 41, a hydraulic pump 42 for pumping hydraulic oil from the hydraulic oil pump 41, and a motor 43 for driving the hydraulic pump 42. The motor may be a DC motor, but is not limited thereto.

The hydraulic pump 42 is connected to the first and second supply pipes 21 and 22, respectively, and has third and fourth supply pipes 23 and 24 for supplying or returning hydraulic oil. Return relief valves (25) (26) are installed to return hydraulic oil to the hydraulic oil tank (41) when hydraulic oil is supplied to the third and fourth supply pipes (23) and (24) at a pressure exceeding the set pressure from the hydraulic pump (42). Pipes (28) (29) are connected to the third and fourth supply pipes (23) (24).

And the third and fourth supply pipes (23) and (24) are provided with first and second solenoid valves (46) for supplying hydraulic oil supplied by the hydraulic pump (42) to the operating cylinder (20) by operation of the remote controller (50). ) (47) is installed, and the first and second shock absorbers (48) ( 49) is installed.

The hydraulic motor 43 and the first and second solenoid valves 46 and 47 are driven by a control unit 70 connected to the power supply unit 60. The remote controller 50 may be connected to the control unit by a line.

As shown in FIG. 2, the first and second shock absorbers (48) and (49) are installed in cases (48a) (49a) each having a space for storing hydraulic oil, and in the space of the cases (48a) (49a). It may be provided with buffer pistons (48c) (49c) pressed by springs (48b) (49b) to buffer the hydraulic oil flowing into the case.

The shock absorber is not limited to the above-described embodiment, and reduces shock and noise caused by hydraulic oil supplied from the third and fourth supply pipes to the first or second supply pipe by operating the first or second solenoid valve. This is possible as long as it has a structure that can buffer the pressure.

Meanwhile, Figure 3 shows another embodiment of the ship steering device according to the present invention. In this embodiment, the same reference numerals as in the above embodiment indicate the same components.

Referring to the drawing, the first and second solenoid valves (80) and (90) installed in the third and fourth supply pipes (23) and (24) each have a buffer portion.

The first solenoid valve 80 is for controlling the supply of hydraulic oil supplied from the third supply pipe 23, and includes a valve body 81 provided with an inlet and an outlet and a valve seat portion 85 between them. , a bobbin 83 supported on the valve body 81 and formed with a guide portion 82, a fixed iron core 86 installed on the upper side of the guide portion 82 of the bobbin 83, and a lower side thereof. It is provided with a movable iron core (88) that is installed in the valve body (81) and is coupled to the valve seat portion (85) to raise and lower the valve member (87) for regulating hydraulic oil. And, forming a buffer part, it includes a buffer spring 89 installed on the valve body 81 and the movable iron core 88 to elastically bias the valve member 87 toward the valve seat 85.

Since the second solenoid valve 90 has substantially the same structure as the first solenoid valve 80, it will not be described again.

The operation of the ship steering device according to the present invention configured as described above will be described as follows.

Steering by the ship's steering device (10) according to the present invention changes the ship's direction by rotating the ship's rudder, and is connected to the remote controller (50) through the steering handle (30) and power unit (40). and is controlled.

The steering handle 30 is usually located in the wheelhouse of a ship, so when a user is located in the wheelhouse, the direction of movement of the ship can be controlled by directly rotating the steering handle 30 without manipulating the remote controller 50. there is. Here, the steering handle 30 can change the direction of travel by rotating the rudder or the outboard motor by manipulating the oil manipulation cylinder 20 by manipulating the helium pump.

And in order to steer the direction using the power unit 40 and the remote controller 50, the motor 43 is driven by the control unit 70 by manipulating the remote controller 50 and the third motor 43 is driven by the hydraulic pump 42. Hydraulic oil is supplied through the supply pipe 23 or the fourth supply pipe 24, and power is selectively supplied to the first solenoid valve 46 and the second solenoid valve 47 to operate them.

For example, in order to operate the ship to the left, the first solenoid valve (46) is operated to supply fluid from the third supply pipe (23) to the first supply pipe (21), and the second solenoid valve (47) is operated. Operate it to return hydraulic pressure through the second supply pipe (22) and the fourth supply pipe (24). Therefore, the rudder or outboard motor is rotated to the right by the operating cylinder 20, thereby increasing the angle of attack on the water and causing the ship to sail to the left.

In order to operate to the right, the second solenoid valve (47) is operated to supply fluid from the fourth supply pipe (23) to the second supply pipe (22), and the first solenoid valve (46) is operated to supply the first solenoid valve (46). Hydraulic oil is returned through the first supply pipe (22) and the third supply pipe (23). Therefore, the rudder or outboard motor is rotated to the left by the operating cylinder 20, thereby increasing the angle of attack on the water and causing the ship to sail to the right.

As described above, in the process of operation, the degree of opening is not controlled when operating the first and second soleid valves (46) and (47) for operating the operating cylinder (20) from the hydraulic pump (46). Vibration and noise are generated during steering due to the operation of the operating cylinder (20). Since the first and second shock absorbers (48) and (49) are installed in the third and fourth supply pipes (23) and (24), the operating cylinder is supplied. Vibration and noise caused by a rapid rise in hydraulic oil can be prevented. In other words, even if the pressure supplied to the third or fourth supply pipe is relatively high when the operation cylinder (20) is operated, the hydraulic oil is supplied to the first or second buffer by the first and second buffers (48) and (49). By flowing into the system, pressure can be absorbed, and sudden supply of hydraulic oil is prevented by operation of the first or second solenoid valves (46) and (47), thereby reducing the generation of noise caused by operation of the operation cylinder (20). There is.

On the other hand, as shown in FIG. 3, when the first and second solenoid valves 80 and 90 are provided with buffer parts, the first and second solenoid valves 80 and 90 are subject to relatively increased pressure of hydraulic oil. The valve member 87 is in close contact with the valve seat 85 due to the movable iron core 88 supported by the buffer spring 89, thereby delaying the supply of hydraulic oil from being blocked, so that the operating cylinder 20 is supplied. It can reduce the impact and noise generated when operating with hydraulic oil.

As described above, the steering device of a ship according to the present invention includes the first and second solenoid valves installed on the third and fourth pipes to supply hydraulic oil supplied from the oil arm pump of the power unit to the operating cylinder. It can reduce the generation of shock and vibration noise caused by the inability to control hydraulic oil supply due to the pressure of hydraulic oil during operation, and further enables stable steering of the ship.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the attached registered claims.

Claims (3)

An operating cylinder (20) mounted on a ship to change the direction of the rudder or outboard motor,
First and second supply pipes (21) (22) connected to the first and second ports (20a) and (20b) for operating the operating cylinder (20) and connected to the helium pump of the steering wheel (30) to supply hydraulic oil. )class,
It is installed in the power unit and includes a hydraulic pump 42 driven by a motor 43, and third and fourth supply pipes connecting the hydraulic pump 42 and the first and second supply pipes 21 and 22 ( 23)(24) and,
First and second solenoid valves installed on the third and fourth supply pipes (23) and (24) to selectively supply hydraulic oil supplied from the hydraulic pump (42) to the first and second supply pipes (21 and 22). (46) (47) and the third and fourth supply pipes (23) and (24) for buffering the pressure caused by the supply of hydraulic oil supplied by the operation of the first and second solenoid valves (46) (47). Shock absorbers 48 and 49,
It is provided with a control unit 70 for operating the motor and the first and second solenoid valves 46 and 47,
The buffers 48 and 49 are installed in cases 48a and 49a having a space in which hydraulic oil is stored, and in the space of the cases 48a and 49a to buffer hydraulic oil flowing into the case. A ship's steering device, characterized in that it is provided with buffer pistons (48c) (49c) pressed by springs (48b) (49b). delete An operating cylinder (20) mounted on a ship to change the direction of the rudder or outboard motor,
First and second supply pipes (21) (22) connected to the first and second ports (20a) and (20b) for operating the operating cylinder (20) and connected to the helium pump of the steering wheel (30) to supply hydraulic oil. )class,
Installed in the power pack, a hydraulic pump 42 driven by a motor 43, and third and fourth supply pipes 23 connecting the hydraulic pump 42 and the first and second supply pipes 21 and 22 )(24) and,
A first, which is installed in the third and fourth supply pipes (23) and (24) and selectively supplies hydraulic oil supplied from the hydraulic pump (42) to the first and second supply pipes (21) and (22) and is provided with a buffer unit. Equipped with 2 solenoid valves,
The first and second solenoid valves equipped with the buffer portion are respectively used to control the supply of hydraulic oil supplied from the third supply pipe 23, and are a valve body provided with an inlet and an outlet and a valve seat portion 85 between them. (81), a bobbin (83) supported on the valve body (81) and formed with a guide portion (82), and a fixed iron core (86) installed on the upper side of the guide portion (82) of the bobbin (83). , installed on the lower side thereof and coupled to the valve seat portion 85 provided in the valve body 81, and provided with a movable iron core 88 that raises and lowers the valve member 87 for regulating hydraulic oil, forming a buffer portion. The steering device of a ship, characterized in that it includes a buffer spring (89) installed on the valve body (81) and the movable iron core (88) to elastically bias the valve member (87) toward the valve seat (85).

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