JPS5856351Y2 - Marine engine control device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a control device for operating a marine engine.

2. Description of the Related Art Conventionally, as a control device for a marine engine, one shown in FIG. 1 is known.

This control device connects a reversing machine 2 and a speed governor 3 to an air supply source 1 through a reversing machine pipe 4 and a speed governor pipe 5, respectively. The forward control valve 6, the reverse control valve 7, and the air pressure control valve 8, which are built into the It is configured so that it can be controlled.

The above-mentioned control device, which uses pneumatic pressure as the operating medium, has advantages over other electric, hydraulic, and electric/hydraulic control devices, such as being relatively low-mounted and easy to repair in the event of a breakdown. Because of this, they are often used on fishing boats and commercial ships equipped with engines of several thousand horsepower or less.

By the way, fishing boats require careful maneuvering during operation (particularly required when hauling lines in the case of tuna longline fishing boats). required to remotely control the engine.

However, in the pneumatic remote control device shown in Fig. 1, the control valves 6, 7, and 8 are heavy and require air piping, and the long air piping causes a delay in control response. Due to some shortcomings, the above requirements could not be met.

The gist of this invention is to incorporate an electrically controlled solenoid valve and a special multi-stage relay valve into the air flow path that connects the reversing machine and speed governor to the air supply source. To provide a maneuvering device that is easy to move and operate, can be carried to any location, has good responsiveness, and can quickly and accurately maneuver a ship.

This invention will be explained in detail below with reference to the drawings.

FIG. 2 shows an embodiment of this invention, in which reference numeral 11 denotes a speed reduction/reversing machine or a reversing machine that connects a marine engine (not shown) and a marine propeller (not shown).

This reversing machine 11 includes an operating cylinder 12 as usual.
．． A reversing operation mechanism 14 is provided, which is operated by 13 to switch the direction of rotation of a propeller shaft (not shown).

15 is a speed governor that adjusts the rotational speed of the engine.

The above-mentioned reversing operation mechanism 14 and speed governor 15 are well known,
When air is sent from the air supply source 16 to the operating cylinder 12 through the reversing machine pipe 17, the propeller shaft rotates in the normal direction to move the ship forward, and when air is sent to the other operating cylinder 13, the propeller shaft rotates in the opposite direction. At the same time, the pressurized air from the air supply source 16 is supplied to the reversing machine 11.
is sent to the speed governor 15 through the speed governor pipe 18, 19 in a state where it is switched to the forward or reverse side, and the speed governor 15 operates in response to the air pressure to change the rotational speed of the engine. It has become.

A forward solenoid valve 20 and a reverse solenoid valve 21 are incorporated in the reversing machine pipe 17, and the speed governor pipe 1
8.19 incorporates a multi-stage relay valve 22, which will be described later.

Each solenoid valve 20.21 is connected via an electric wire 24.25 to a switch (not shown) operated by the bundle 23; for example, when the bundle 23 is tilted forward, the advancement solenoid valve 20 opens; When the vehicle is tilted backward, the reverse electromagnetic valve 21 opens.

Here, the multi-stage relay valve 22 is explained. It enables multi-stage adjustment of the air supply pressure. Piston chambers 29 with different diameters accommodate screws 1-26, 27, and 28 with different pressure-receiving areas. , 30.31, inlet 32 and outlet 33
A supply valve 35 is provided in association with the piston as will be described below.

Each piston 26, 27.28 has a piston rod 36.3
7, 38, the piston 28 is connected to the piston rod 38.
and a hollow pressing rod 39 fixed thereto, and the piston 27 has piston rods 37, 38 and the pressing rod 3.
9, and finally the piston 26 is connected to the piston rod 36, 3
7.38 and pressure rod 39 respectively to the supply valve 35.

Further, the outlet side 40 of the valve chamber 34 is communicated with the opposite side 41 of the piston chamber 31 via a communication passage 42, and the supply valve 3
5 is attached with a pushing spring 43 that acts to push it downward in the figure to close the communication passage 34a between the inlet side and the outlet side of the valve chamber 34, and the piston 28 is attached with a return spring 44. has been done.

Furthermore, each piston chamber 29, 30, 31 is connected to a pressure control pipe 45 connected to the air supply source 16.
6.47.48.

The above-mentioned communication pipes 46, 47, 48 are provided with governor solenoid valves 49, 50, 51, respectively.

These solenoid valves 49, 50, 51 are similar to the solenoid valve 20 described above.
．． Electric wires 53, 54, 55 are connected to the rotary switch 52 (see Fig. 3) operated by the bundle 23 in the same way as 21.
1 corresponding to the angle of inclination of the bundle 23.
The structure is such that one or more can be opened.

Note that 56 in FIG. 3 is a contact piece of the rotary switch 52, which is opened and closed by raising and lowering (rotating) the bundle 23 to sequentially control the electromagnetic valves 49, 50, and 51.

Therefore, 57 and 58 are the pressure rod 39 and the valve chamber 34.
The pipe 19 is configured to open the pipe 19 to the atmosphere when the pressure rod 39 releases the pressure on the supply valve 35 and leaves the supply valve 35.

The above-mentioned multi-stage relay valve 22 has a piston 26, 27, 28 area ratio of 4:6:7, for example, and one or more governor solenoid valves 49, 50, 51... For example, a solenoid valve 50.5
1 to open the piston chamber 30.31 to the air supply source 16, the area difference of the piston 27.26 (i.e. 6-42
) plus the difference in area between the pistons 28 and 27 (7-6=1) is applied to the supply valve 3 via the pressure rod 39 etc.
5 to release it (for convenience, spring 43.4
(I don't think about the power of 4).

When the supply valve 35 is opened, pressurized air escapes from the inlet 32 to the outlet 33 and passes through the pipe 19 to operate the governor 15, while on the other hand it passes through the communication passage 42 to the chamber 41.
The supply valve 35 acts to exert pressure on the piston 28 to close the supply valve 35.

As a result, a pressure corresponding to the pilot pressure applied to the piston chamber from the air supply source 16 is applied to the speed governor 15.

When the solenoid valves 50 and 51 are closed from the above state, the pressure rod 39 fixed to the piston 28 and the piston rod 38
The supply valve 35 is returned to its pre-operation state by the action of the return spring 44, and the supply valve 35 is pushed by the pressure spring 43 to the closed state.

In this case, the pressure rod 39 descends and leaves the supply valve 35, so that the governor 15 connects the pipe 19 and the exhaust hole 57.
58 to the atmosphere.

By the way, there are eight combinations of opening and closing of the solenoid valves 49, 50, 51 as shown in the following table.

In the table, ○ indicates open and × indicates closed.

In addition, in this invention, the detailed structure of the multistage relay valve 22 is arbitrary and is not limited to that shown in the drawings.

*1 The handle is in the neutral position as shown in Figure 3.

*2 1H or IS out of 56 contact pieces by operating the handle.
turns on.

Similarly, 2H, 2S, 3H, 3S, etc. are turned on.
A sequence circuit (not shown) is set up so that the pressure becomes 2, 3, . . . when .

To go back and further explain the control device of this invention, a porta-pull control panel 60 is connected to a control panel 59 fixedly installed in the cockpit via a cable 61, and each of the control panels 59 and 60 has a A handle 23 is provided.

The control panel 59 and 60 can be selectively selected by operating a changeover switch 62 provided on the control panel 59.

Next, the operation of the control device configured as described above will be explained.

First, the changeover switch 62 is operated to determine whether the control panel 59 or the portable control panel 60 is selected.

Regardless of which control panel 59 or 60 is used, when moving the ship forward, the handle 23 is moved to the forward side.

This operation opens the forward solenoid valve 20 and operates the operating cylinder 12 to rotate the propeller shaft in the forward direction.

At the same time, one of the contact pieces 56 of the rotary switch 52 closes in accordance with the degree of operation of the handle 23, opening and closing the solenoid valves 49, 50, 51.

As a result, the multi-stage relay valve 22 is activated, and the pressurized air sent from the air supply source 16 through the pipe 17, the operating cylinder 12, and the pipe 18 is sent to the speed governor 15 to control the rotational speed of the engine.

When moving the boat backward, move the handle 23 to the backward movement side.

At this time, the solenoid valve 21 is opened and the operating cylinder 13 is operated to reverse the propeller shaft, but the substance of engine speed control is exactly the same as above.

The control device of this invention has the above structure, and unlike conventional pneumatic control devices, it does not require a control valve, so the control panel 59
, 60 can be made compact and lightweight.

Also, a relay valve 22 and solenoid valves 20, 21. 49.50.
Since the pneumatic equipment such as 51 can be arranged near the engine in the engine room, the length of piping is shortened, which is not only advantageous for equipment and maintenance inspection, but also has the effect of improving control responsiveness.

Moreover, since the control command is given by electric current, it is particularly effective when using the portaple control panel 60, and the portaple control panel 60 can be easily carried to any part of the ship to quickly and accurately maneuver the ship.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a conventional pneumatic control device, FIG. 2 is a schematic diagram of a control device according to this invention, and FIG. 3 is a schematic front view of a rotary switch. 14... Reversing operation mechanism, 15... Governor, 16... Air supply source, 17... Pipe for reversing machine, 18.19... ... Speed regulating pipe, 20 ... Solenoid valve for forward movement, 21 ... Solenoid valve for reverse movement, 22 ... Multistage relay valve, 23 ...
...handle, 26.27. 28...Piston, 29,30.31...
...Piston chamber, 32...Inlet, 33...
...Outlet, 34...Valve chamber, 35...
・Supply valve, 46, 47, 48... Connection pipe, 49, 50.51... Solenoid valve for regulating crosspiece.

Claims (1)

[Scope of utility model registration request] The reversing machine and speed governor are connected to the air supply source through a reversing machine pipe and a speed governor pipe, respectively, and by operating the bundle, the air sent from the air supply source switches the reversing machine and controls the speed governor. In the control device for a marine engine, the reversing machine pipe includes a forward solenoid valve and a reverse solenoid valve that are electrically opened and closed by the bundle, and a forward solenoid valve and a reverse solenoid valve that are electrically opened and closed by the bundle. The pipe has a plurality of piston chambers individually housing pistons with different pressure receiving areas, and a valve chamber having an inlet and an outlet and a supply valve installed in relation to the piston, and one or more pistons are provided in the pipe. The supply valve is opened by supplying air into the piston chamber and operating the piston housed in the piston chamber, and the air sent from the inlet to the valve chamber is supplied at a pressure commensurate with the pressing force of the operating piston. A multi-stage relay valve configured to deliver air from the outlet connects each piston chamber and the inlet of the valve chamber directly or indirectly to the air supply source, and connects the outlet of the valve chamber to the governor. Each connecting pipe connecting the piston chamber of the multi-stage relay valve to the air supply source is provided with a governor solenoid valve that is electrically opened and closed by the bundle. A control device for marine engines.