JPS5996098A - Swivel type thruster - Google Patents

Abstract

PURPOSE:To obtain a small-sized thruster in which adjustment is easy, by coaxially arranging a clutch part at the top edge of a thruster input shaft installed vertically onto the platform of a hull and installing a strain gauge, thus reducing the space occupied by a clutch case. CONSTITUTION:The clutch part 11 of a swivel type thruster 8 is coaxially installed at the top edge 25a of a thruster input shaft 25. Therefore, the space occupied by the clutch part 11 is reduced on the upper surface 21a of a platform 21. Since the distance between the upper surface 21a of the platform 21 and the center line of a horizontal input shaft 10, namely the height H of the input shaft is reduced in comparison with the conventional, the inclination angle of a universal joint can be reduced, and the transmission efficiency can be increased. Further, a strain gauge 35 is installed onto the thruster input shaft 25, and a gear case inspection eye 36 is installed at the corresponding position. Thus, adjustement of the vertical degree of the center line of the thruster input shaft 25 during or after assembly is facilitated.

Description

[Detailed description of the invention] The present invention relates to improvements in marine orbiting thrusters.

FIG. 1 shows an overall view of the rotating thruster installed on the hull 1. The rotational driving force is transmitted to.

FIG. 2 shows a cross-sectional view of a conventional swing-type thruster 8, in which the rotational driving force of the main engine 2 is transmitted to the thruster section 9 through a horizontal input shaft 1.
0, through the clutch section 11, bevel gear 12.13, upper thruster input shaft 14, gear coupling 15, lower thruster input shaft 16 and bevel gear 17.18, and finally transmitted to the propeller 20 fixed to the propeller shaft 19. This is done by Note that the thruster section 9 is attached to the hull 1.
It is rotatably supported on a platform 21 which is fixed to a platform 21, and can be turned for steering via a worm 22 and wheels 23.

Incidentally, since the clutch case 24 is coaxially provided at the end of the horizontal input shaft 10 opposite to the compulsory gear 0, the space on the upper surface 21a of the platform 21 is enlarged (occupied) by the clutch case 24 as shown in FIG. be done.

Therefore, there is a drawback that it is difficult to install the swing driving equipment (not shown) of the thruster section 9 including auxiliary equipment of the swing type thruster 8 such as a hydraulic pump on the platform 21.

Furthermore, when the propeller 20 of the thruster section 9 is a variable pitch propeller, there is a drawback that even if it is desirable to install hydraulic equipment for changing the pitch on the plant home 21, it is difficult to install it. Moreover, since the bevel gear 13 is arranged at the lower part of the horizontal input shaft 10, the upper surface 21a of the plant home 21 and the horizontal input shaft 10
The distance from the center line of the universal joint 4.6, that is, the height H of the input shaft increases, and the angle of inclination of the universal joint 4.6 increases (as shown in FIG. In addition, it is necessary to provide a gear coupling 15 to absorb misalignment between the upper thruster input shaft 14 and the lower thruster input shaft 16, which increases costs.
Since the diameter of the thruster casing 9a becomes larger, there is a problem in that the entire rotating thruster 8 becomes larger.

The present invention was made in order to solve the above-mentioned problems, and it reduces the space occupied by the clutch case on the plant platform, and reduces the space occupied by the clutch case on the plant platform, and in some cases, reduces the space occupied by the clutch case on the plant platform. auxiliary equipment can be easily installed on the plant platform, and in addition, the height of the horizontal input shaft can be lowered to improve the transmission efficiency of the universal joint, and the overall size can be reduced. The purpose is to provide a rotating thruster.

Its unique feature is that the clutch is coaxially located at the upper end of the thruster input shaft, which is installed perpendicularly to the platform.

Hereinafter, the present invention will be explained in detail based on examples thereof.

FIG. 4 is a cross-sectional view of the rotating thruster 8 of the present invention, and shows the upper surface 21a4 of the platform 21 and the bevel gear 26.2.
7 is housed in the gear case 28 (fixed).The horizontal input shaft 10 is rotatably attached to the bearing 2 in the gear case
9, and a bevel gear 26 at one end thereof.
is installed). centre.

Thruster input shaft 2 installed vertically on the rat platform 21
5 is rotatably supported by bearings 30, 31A, 31B, and 32 in the swing type thruster 8, and a bevel gear +27 that meshes with the bevel gear 26 is attached, and furthermore, the Kura-Sochi part 11 is coaxially attached to the upper end 25a. installed on.

Note that a bearing case 33 is attached to the upper part of the gear case 28, and a clutch case 24 is provided above the bearing case 33.

The thruster part 9 is a plastic node home 2 fixed to the hull 1.
It is supported by a bearing 34 so as to be able to freely rotate with respect to the worm 22 and the wheel 23 by a drive source (not shown). A bevel gear 17 is attached to the lower part of the thruster input shaft 25, and a bevel gear 18 and a propeller 20 are attached to the propeller shaft 19.

Since this embodiment is configured as described above, it can be operated as follows.

The rotational driving force of the main engine is transmitted to the horizontal input shaft 10 via the force/knob ring 7, and the thruster input shaft 25 installed vertically via the bevel gear 26, 27 and the clutch section 11.
Further, within the thruster section 9, it is finally transmitted to the propeller 20 as described above. It goes without saying that the thruster input shaft 25 does not rotate when the crutch notch portion 11 is in the released state.

By the way, since the clutch section 11 is coaxially attached to the upper end 25a of the thruster input shaft 25, the space occupied by the clutch section 11 on the upper surface 21a of the plant home 21 is reduced, as shown in FIG. 5G. Also,
Since the distance between the upper surface 21a of the plastic node home 21 and the center line of the horizontal input shaft 10, that is, the input shaft height H, can be made lower than in the conventional example, the universal joint 4.
6 can be made smaller, and its transmission efficiency can be increased.

Although the thruster input shaft 25 described above is longer than the conventional example, if a strain gauge 35 is attached to the thruster input shaft 25 as shown in the figure and a peephole 36 is provided in the gear case 28 at a corresponding position, the thruster input can be adjusted. During and after assembly of the shaft 25, the installation positions of the gear case 28 and the bearing case 33 can be adjusted while measuring the strain amount of the strain gauge 35 through the peephole 36.
The verticality of the axis center line can be easily adjusted. In addition, by arranging the clutch portion 11 at the upper end of the thruster input shaft 25, it is possible to increase the span between the bearings 31A and 31B, and even if the center lines of the bearings 31A and 31B are slightly misaligned, the thruster input This can be absorbed to some extent by bending the shaft 25.

FIG. 6 shows a different embodiment in which the vertically installed thruster input shaft 37 is divided into an upper thruster input shaft 37a and a lower thruster input shaft 37b.

Therefore, the plant boom 21 and the thruster section 90 fixed to the hull 1 can be easily disassembled. At this time, the upper thruster input shaft 37a and the lower thruster input shaft 3
The connection of 7b is carried out by the French coupling 3 described below.
9 and sleeve coupling 40.

FIG. 7 shows a flange coupling 39 using an appropriate number of transmission radial bins and a baka port 42, and is used to connect the upper thruster input shaft 37a and the lower thruster input shaft 37b, and these are used for the rotational driving force. It is mainly responsible for torque transmission. Such transmission radial bin 4
According to No. 1 and Bakabolt 42, there is no need to use a normally required reamer port, so assembly is easy, the flange diameter can be made small, and disassembly is also easy.

FIG. 8 shows a sleeve coupling 4o, which is composed of an inner tube 43 with an inclined outer surface, an outer tube 44 with an inclined inner surface, and a ring-shaped cylinder 45. For coupling, a cylinder 45a inside the ring-shaped cylinder 45 is connected to the outside. Push the tube 44 to an appropriate position and tighten the inner tube 43 and the threaded portion 46 of the ring-shaped cylinder 45. Therefore, the torque can be sufficiently transmitted by the frictional force, and the diameter of the compression ring can be further reduced.

As described in detail above, in the present invention, since the clutch portion is disposed at the upper end of the thruster input shaft installed perpendicularly to the platform, the space occupied by the clutch portion on the upper surface of the platform can be reduced. Therefore, various auxiliary machines and the like can be installed on the platform as necessary, and the entire rotating thruster can be downsized. Furthermore, the height of the horizontal input shaft can be reduced to improve the transmission efficiency of the universal joint. In addition, by arranging the clutch section at the upper end of the vertical thruster input shaft and increasing the bearing support span of this input shaft, we have created a structure that does not tolerate misalignment of the center line between the upper gear case and the lower thruster section. I can do it.

In addition, by attaching a strain gauge to the thruster input shaft and providing a peephole in the gear case at a corresponding position, it becomes extremely easy to adjust the perpendicularity of the axis center line of the thruster input shaft.

Furthermore, by dividing the thruster input shaft and connecting it using a small-diameter flange coupling using a transmission radial bin and a stupid bolt, or a small-diameter sleeve coupling, disassembly at the thruster section becomes easier and the thruster section can be made smaller. can be achieved.

[Brief explanation of the drawing]

Figure 1 is an overall view of a rotating thruster installed on a ship's hull, Figure 2 is a sectional view of a conventional rotating thruster, Figure 3 is a plan view of a conventional platform, and Figure 4 is a rotating type thruster according to the present invention. 5 is a plan view of the platform of the present invention, FIG. 6 is a sectional view of a different rotating thruster of the present invention, FIG. 7 is a sectional view of the flange coupling, and FIG. 8 is a sleeve coupling. A cross-sectional view is shown. 1-=hull, 8-swivel thruster, 11-・clutch section, 21-platform, 25.37--thruster input shaft, 25 a-upper end, 26.27-bevel gear, 28-
Gear case, 35-Strain gauge, 36-Peep hole, 39-Flange coupling, 40--Sleeve coupling,
41-・Transmission radial pin, 42-Bakabolt Patent applicant Kawasaki Heavy Industries, Ltd.

Claims (4)

[Claims] (1) In a swing-type thruster that is rotatably supported on a platform to be installed on a ship's hull and that rotates a propeller through a bevel gear at the top of the platform, a clutch part is attached to the upper end of the thruster input shaft installed perpendicularly to the platform. A rotating thruster characterized by coaxially arranged. (2) The rotating thruster according to claim 1, wherein a strain gauge is attached to the thruster input shaft and a peephole is provided in the gear case at a position corresponding to the strain gauge. (3) The rotating thruster according to claim 1 or 2, wherein the thruster input shaft is divided and connected by a flange coupling using a transmission radial bin and a bolt. (4) Claim 1, characterized in that the thruster input shaft is divided into parts and connected by a sleeve coupling.
The rotating thruster according to item 1 or 2.