KR200381820Y1 - Water jet propulsion device for a shop - Google Patents

Abstract

The present invention relates to a water jet propulsion device for ships.

Conventionally, various types of water jet propulsion systems for ships are known, which allow the ship to move forward by the propulsion force that inhales water into the inlet by the impeller and injects it into the nozzle, and to reverse and change the direction. As a result, the production cost was required a lot, and the maintenance cost was burdened with frequent failures, and the operation was not performed smoothly.

The present invention to solve the above problems

The drive shaft 6 fixed with the impeller 7 is installed in the support 3A and the impeller case 1 formed integrally with the reaction case 3 by rotating the bearings 8 and 9 freely with the impeller 7. In order to suck the water and to advance the ship by the propulsion force generated at the time of injection, and to install the steering tube 10 to the nozzle (4) rotatably, the rebound case in the hole (10A) of the stone piece (10 ') (3) the bearing (10) and the ball 12A of the control shaft 12 installed on the flange (1B) is sandwiched by the steering lever (12B) and the cylinder 13 to rotate the steering tube (10) left and right. The bearing 16 is provided with a reversing scoop 14 formed by the shaft 15 so that the forward direction of the ship can be changed and the exit 14A of the passage faces the front at an angle of about 45 ° in the reaction case 3. Backwards the ship by allowing it to be moved up and down by the piston rod 18A of the cylinder 18 fixed to the pin 17 So you can kill it is an object that was to provide a water jet propulsion system for ships.

Description

WATER JET PROPULSION DEVICE FOR A SHOP}

The present invention is installed at the rear of the ship to connect the drive shaft of the impeller with the drive shaft of MARINE ENGINE so that the water sucked by the impeller can be forwarded by the thrust generated by the nozzle and the backward scoop The present invention relates to a water jet propulsion system for the ship which allows the ship to propel backward and to be diverted by the steering maneuver.

Conventionally, a marine engine and a water jet are connected by a flange to suck the water into the inlet by the rotation of the impeller of the water jet, so that the ship can be advanced by the propulsion force sprayed by the nozzle and reverse and the direction can be changed. There are many kinds of marine water jet propulsion apparatuses, but this is complicated in structure and requires a lot of production cost, and the problem of the frequent failure is a burden of maintenance cost and smooth operation.

The drive shaft 6 fixed with the impeller 7 is installed in the support 3A and the impeller case 1 formed integrally with the reaction case 3 by rotating the bearings 8 and 9 freely with the impeller 7. In order to suck the water and to advance the ship by the propulsion force generated at the time of injection, and to install the steering tube 10 to the nozzle (4) rotatably, the rebound case in the hole (10A) of the stone piece (10 ') (3) the bearing (10) and the ball 12A of the control shaft 12 installed on the flange (1B) is sandwiched by the steering lever (12B) and the cylinder 13 to rotate the steering tube (10) left and right. The bearing 16 is provided with a reversing scoop 14 formed by the shaft 15 so that the forward direction of the ship can be changed and the exit 14A of the passage faces the front at an angle of about 45 ° in the reaction case 3. Backwards the ship by allowing it to be moved up and down by the piston rod 18A of the cylinder 18 fixed to the pin 17 So you can kill it is an object that was to provide a water jet propulsion system for ships.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view of the present invention

2 is a perspective view of the present invention;

Figure 3 is a partial perspective view of the present invention

4 is a cross-sectional view of the present invention.

As shown in FIGS. 1 to 4

The grill plate 2 is fixed to the inlet 101 of the impeller case 1 having the inspection hatch 1A and the streamlined passage 1 ', and the flange of the impeller case 1 is fixed. 1B), in which the reaction case 3 and the nozzle 4 are brought into contact with each other and fixed by bolts 5, the support 3A and impeller case 1 formed integrally with the reaction case 3 and the impeller 7 ) Is fixed to the drive shaft (6) fixed to the bearing (8) (9) and the nozzle (4) rotatably installed to the steering tube (10) with the pin (11), but the hole of the stone piece (10 ') Steering pipe (10) by steering lever (12B) and cylinder (13) by inserting bearing (301) of recoil case (3) and ball (12A) of control shaft (12) installed on flange (1B). ) To the left and right to change the ship's forward direction, and the rebound case 3 has a reverse scoop 14 formed with the outlet 14A of the passage facing the front at an angle of about 45 °. It is characterized in that it is installed by the shaft 15 to be moved up and down by the piston rod 18A of the cylinder 18 fixed to the bearing 16 by the pin 17.

                          19 is a cover

                                           20 is a ship

                                           21 is a drive shaft of the marine engine.

The present invention thus secured the flange 1B and the bottom of the impeller case 1 to the vessel 20 as indicated by the dotted line in FIG. 4 and the flange of the drive shaft 6 and the drive shaft 21 of the marine engine. When the drive shaft 6 is rotated by the connection, water is introduced into the inlet 101 by the rotation suction force of the impeller 7 fixed to the drive shaft 6, and the nozzle 4 and the steering tube 10 as shown in FIG. At the same time, the thrust force is generated by the injection. Accordingly, the ship 20 is advanced forward.

In order to change the forward direction in the forward state, operate the cylinder (13) fixed to the bracket installed in the impeller case (1) and rotate the steering shaft 12 slightly with the adjustment lever 12B. The steering tube 10 is rotated left and right by the pin 11 as an axial point by the hole 1A of the protrusion 10 'in which the ball 12A of (12) was fitted. Therefore, the water sprayed by the nozzle 4 may change the forward direction of the ship 20 by the spraying direction of the water by the steering tube 10 to the left and right.

When advancing the vessel 20, the reverse scoop 14 is maintained by the operation of the cylinder 18, as shown in Figs. When the ship 20 is to be retracted in the closed state, the cylinder 18 is operated to lower the backward scoop 14 as shown by the dotted lines in FIGS. 2 and 4, and the suction case is sucked into the inlet 101. ), The nozzle (4), the water sprayed to the steering tube 10 is introduced into the reverse scoop 14 is discharged to the exit (14A) toward the front of the ship 20 is backward. And although the piston rod 18A of the cylinder 18 is made to penetrate the hole drilled in the impeller case 1, the installation position of the cylinder 18 can be changed, and this invention is similar in the range which does not deviate from the summary. Of course, the structure can be changed.

As such, the present invention has a simple structure that is very rational in constructing a water jet propulsion device that is forward, changed direction, and reversed by jet propulsion force inhaling and spraying water by the impeller (7). Since it is not easily generated, it is possible to reduce the burden of maintenance costs and the effect is that the operation is made smoothly as the structure is simple.

1 is a plan view of the present invention

2 is a perspective view of the present invention

3 is a perspective view of a part of the present invention

4 is a cross-sectional view of the present invention

5 is a use state of the present invention

Explanation of symbols for main parts of the drawings

1: Impeller Case

1 ': Streamlined passage

101: entrance

1A: INSPECTION HATCH

1B: Frangipani

2: GRILL

3: REACTION CASE

3A: Supporting Sphere

301: bearing

4: Nozzle

5: bolt

6: DRIVE SHAFT

7: impeller

8,9: Bearing

10: steering wheel

10 ': stone piece

10A: hole

11: pin

12: steering shaft

12A: Ball

12B: Steering lever

13: cylinder

14: SCOOP

14A: exit

15: axis

16: bearing

17: pin

18: cylinder

18A: Piston Rod

Claims (1)

The grill plate 2 is fixed to the inlet 101 of the impeller case 1 having the inspection hatch 1A and the streamlined passage 1 ', and the flange of the impeller case 1 is fixed. 1B), in which the reaction case 3 and the nozzle 4 are brought into contact with each other and fixed by bolts 5, the support 3A and impeller case 1 formed integrally with the reaction case 3 and the impeller 7 ) Is fixed to the drive shaft (6) fixed to the bearing (8) (9) and the nozzle (4) rotatably installed to the steering tube (10) with the pin (11), but the hole of the stone piece (10 ') Steering pipe (10) by steering lever (12B) and cylinder (13) by inserting bearing (301) of recoil case (3) and ball (12A) of control shaft (12) installed on flange (1B). ) To the left and right to change the ship's forward direction, and the rebound case 3 has a reverse scoop 14 formed with the outlet 14A of the passage facing the front at an angle of about 45 °. A water jet propulsion system for ships, characterized in that it can be moved up and down by the piston rod (18A) of the cylinder (18) fixed to the bearing (16) by the pin (17) by the shaft (15).