JP3368800B2 - Steering control method for jet propulsion device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering control method for a boat, and more particularly to a steering control method for a boat having jet propulsion devices on port and starboard. 2. Description of the Related Art Conventionally, jet water jet pumps are provided on the port side and starboard side of the stern, and a jet water switching device is provided at the rear of the jet pump to turn or reverse the boat. For example, it is described in Japanese Patent Application Laid-Open No. 4-133895 and is known as shown in FIG. [0003] However, in a conventional boat, in order to turn or move in the side direction, the port side steering lever and the starboard side as shown in FIGS. 1 to 6 are required. Operate the side steering lever to move the deflector of the jet propulsion device, perform lateral movement to port or starboard,
The reverser was used to switch between forward and reverse.However, maneuvering a boat with a two-axis jet propulsion system requires experience, especially when leaving and berthing is complicated.
It is necessary to switch between forward and reverse, such as turning back, and it became more difficult for larger vessels. The present invention aims at automating and simplifying the above-mentioned maneuvering, and stores predetermined operations in a microcomputer so that inexperienced persons can easily maneuver. [0004] That is to say, the structure is as follows: a jet water jet pump provided on the port side and starboard side of the stern;
A jet water switching device is provided at the rear of the injection pump, and the port propulsion steering lever and the starboard steering lever are simultaneously operated to switch the outflow direction of the jet water from the switching device. From experience, experienced people go
There was a rip, enter the port side and the operation of the starboard side of the operation lever during berthing, the procedure of maneuvering courses crosscut the microcomputer, running maneuvering the ship, parallel away shore, the forward-reverse release docking maneuvering mode program And automatically operate the switching device for the port and starboard jet water in accordance with the command signal of the microcomputer selected according to the situation, so that the boat leaves and berths. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The operation courses of a port steering lever and a starboard steering lever, such as traveling maneuvering of a boat, parallel departure and landing, forward and backward departure and landing, etc., are read into a microcomputer according to procedures performed by a skilled person. By operating the steering nozzle of the two-axis jet propulsion system, the operation modes such as parallel shore, backward shore, and forward shore are programmed, and the computer is controlled by selecting the operation mode. This makes it possible to control the boat even if the person has little experience in maneuvering the boat. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. First, FIGS. 1 and 2 show a method of turning a boat 1 having a two-axis jet propulsion device at one point. Then, the port side steering lever 2a and the starboard side steering lever 2b are set to 30 degrees in opposite directions, respectively, and the deflectors for changing the direction of the port side and starboard side injection pumps 3a, 3b and the reverser for switching between forward and reverse are provided. Steering nozzles 4a, 4
By setting one of b to forward and the other to reverse, the boat can turn on the spot. The steering nozzle 4 of FIG.
In a and b, since the jet flow from the steering nozzle 4b on the reverse side is outward from the center line of the hull, the jet flow does not affect the water flow at the inlet of the steering nozzle 4a in the forward movement method. In the method of setting the steering nozzles 4a and 4b in FIG. 2, since the jet stream from the reverse steering nozzle 4a is in the direction of the hull center line, the inflow water at the suction port of the forward steering nozzle 4b is agitated. The mixing of air reduces the thrust of the injection pump 3b. However, this arrangement of the steering nozzles 4a and 4b is convenient for performing lateral movement for leaving and landing.
After performing the one-point turning in FIG. 2, the skilled worker has shifted to the lateral movement. FIGS. 3 and 4 show a method of laterally moving a boat on the starboard side. The method shown in FIG.
The starboard-side steering lever 2b is rotated 30 degrees to the starboard side, and the starboard-side steering nozzle 4b is rotated in the reverse direction of the hull center line,
The port side steering lever 2a is set in the forward straight traveling direction, and while adjusting the forward thrust of the port side steering nozzle 4a, the reverse angle of the starboard side steering nozzle 4b is steered to the starboard or port side to move. The method of laterally moving to the starboard side in FIG.
After turning one point by the method described above, the port side and starboard side steering nozzles 4a and 4b are operated in the opposite direction to the method of FIG. 3 to move laterally to the starboard side. 5 and 6 show a method of laterally moving to the port side, and the port side and starboard side steering nozzles 4a, 4b for laterally moving to the starboard side in FIG. 3 and FIG.
The ship is steered by changing the injection direction of the ship. FIG. 7 shows a combination of the one-point turning method of the boat shown in FIGS. 1 to 6 and the lateral movement method to the starboard or port side.
It is a computer control of the ship maneuvering method, and based on past experience, maneuvering of the port and starboard steering levers 2a, 2b at the time of traveling ship maneuvering, parallel berthing, forward and backward berthing, turning back,
The detailed procedure of the maneuvering process of the combination of direction and angle is read into the microcomputer, and a program for the maneuvering mode of the boat's traveling maneuver, parallel berthing, forward and backward berthing is created,
Select the required mode from this operation mode, operate the hydraulic switching valve by the command signal of the microcomputer,
As shown in FIG. 8, two water jets disposed in the port control box and the starboard control box are controlled to switch between forward and reverse. That is, when the berthing mode is selected and the concentration lever is tilted to the left, it moves to the left, and when it is tilted to the right, it moves to the right. When the driving mode is selected, tilting forward will move forward, tilting backward will move backward, and tilting left or right will change the course. As described above, according to the present invention, the operation of the two-axis jet propulsion device of a boat is stored in a microcomputer so that the boat can be easily maneuvered. That is, in the conventional device, the port side and the starboard side steering levers are operated to switch between the lateral movement to port or starboard, the forward and the reverse, but a ship having a two-axis jet propulsion device is used. Maneuvering of a boat requires experience, especially when leaving and berthing is complicated, such as operating the steering lever, turning it back, etc.
Although the reverse switching operation was required, in the present invention, the procedure of the above-mentioned ship maneuvering process is inputted, and a program for the ship maneuvering mode of traveling boat maneuvering, parallel detaching and berthing, forward and backward berthing is created. Because it is not complicated like conventional manual operation, it can be easily operated, so there is no operation error, complicated berthing and berthing can be easily done, shortening time, saving personnel, and preventing damage to boats be able to.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram of a conventional one-point turning method of a boat provided with a two-axis jet propulsion device by manual operation. FIG. 2 is a conceptual view of another embodiment of a single point turning method for a boat. FIG. 3 is a conceptual diagram of a conventional manual operation for laterally moving from the one-point turning method in FIG. 1 to the starboard side. FIG. 4 is a conceptual diagram of another embodiment of the lateral movement method from the one-point turning method to the starboard side in FIG. 2; FIG. 5 is an embodiment of a conventional method of laterally moving a boat to port by manual operation. FIG. 6 is a conceptual diagram of another embodiment of a lateral moving method in the port direction. FIG. 7 is a block diagram showing a method of inputting a boat maneuvering method according to the steering control method for a jet propulsion device of the present invention to a microcomputer. FIG. 8 is a conceptual diagram of a boat maneuvering control method according to the present invention. [Description of Signs] 1 Boats 2a, 2b Steering levers 3a, 3b Injection pumps 4a, 4b Steering nozzle

Claims (1)

(57) [Claims 1] The jet pumps 3a, 3b provided on the port side and the starboard side of the stern, and the jet pumps 3a, 3b
b, a jet nozzle for steering the jet water from the steering nozzles 4a and 4b by simultaneously operating the port side steering lever 2a and the starboard side steering lever 2b. In the propulsion device, trained
Tsu have been offshore, berthing at the time of the port side and starboard side of the steering lever 2a, operation of 2b, enter the procedure of maneuvering course of the crosscut to the micro-computer, running maneuvering of the ship 1, parallel away shore, the forward-reverse away Create a program for the berthing maneuvering mode and automatically operate the steering nozzles 4a and 4b on the port and starboard jet water according to the command signal of the microcomputer selected according to the situation, and detach the boat 1 and berth. And a steering control method for a jet propulsion device.