JPH0520638Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is a Z-engine equipped with a variable pitch propeller.
This invention relates to an oil distribution device used in a type propulsion device, etc.

[Conventional technology]

A casing equipped with a variable pitch propeller is attached to the hull so that it can rotate freely, and the direction of the ship can be changed by turning the casing relative to the hull.
In a type propulsion system, in order to change the pitch of the variable pitch propeller, it is necessary to use some kind of swivel joint (oil distribution device) to send hydraulic oil to the variable pitch propeller part.

Conventionally, oil distribution devices have a structure in which a cylindrical portion having an oil passage is arranged on the outside of a casing in which an oil passage is formed, and the oil passages are connected to each other, and the cylindrical part is fixed to the ship's hull. It is known that a cylindrical member with an oil passage opened on the outer circumference is fitted inside a casing with an oil passage opened on the inner circumference so that the oil passages communicate with each other. .

[Problem that the invention attempts to solve]

However, in the case of the former structure, since the cylindrical member is disposed outside the casing, the entire device becomes large and there is a dissatisfaction with the fact that the equipment such as other equipment is severely restricted. In addition, in the latter case, it is not only surprisingly difficult to arrange the casing and the cylindrical member completely concentrically, but also
Even if these axes become deviated over time,
Since it is difficult to know from the outside, there is a problem that oil leaks are likely to occur.

[Means for solving problems]

In this invention, a cylindrical intervening member is fitted into a casing that is rotatably provided on the ship's hull about a vertically arranged rotating shaft, and is fitted approximately concentrically with the casing and freely movable in the radial direction of the casing. is,
A cylindrical member is disposed between the intervening member and the rotating shaft so that its lower part overlaps the intervening member and its upper part is fixed to the hull, and the inner circumferential surface formed on the intervening member and the lower an oil passage opening at the end surface;
The oil passage that opens on the outer circumferential surface and the upper end surface formed in the cylindrical member is communicated with the opening on the inner circumferential surface and the opening on the outer circumferential surface facing each other at the overlapping part of the intervening member and the cylindrical member, and A sealing member is installed between the overlapping portion of the inner circumferential surface of the member and the outer circumferential surface of the cylindrical member to close the upper and lower gaps of the openings of the oil passages that communicate with each other. .

[Effect]

In the above configuration, the oil flowing into the passage of the cylindrical member from the supply device provided on the hull side flows into the passage of the intervening member through between the two upper and lower seal members, and flows to the passage of the intervening member such as the variable pitch propeller. sent to. Moreover, the oil that has achieved its purpose flows through another passage of the intervening member to another passage of the cylinder member and returns to the supply device on the hull side. The above circulation of oil is done regardless of whether the casing is pivoted or stopped.

In addition, if the center of the casing deviates from the center of the cylindrical member due to a change in the load direction due to rotation of the casing or for other reasons, the intervening member will move relatively loosely in the radial direction within the casing, causing the cylindrical member to shift. Maintain normal relationships with parts.

〔Example〕

FIGS. 1 and 2 show an embodiment of this invention, and reference numeral 1 indicates the hull. In this hull 1, a casing 2 is pivotally supported by a bearing 3 via a bracket 22, and the rotation of a swing drive device (not shown) mounted on the hull 1 is controlled by a gear fixed to the upper end with a set screw 4. It is designed to turn in response to 5. A rotating shaft 6 is pivotally supported at the center of the casing 2, and a propeller (not shown) is provided at the bottom of the casing 2, which is rotated by a rotational drive mechanism (not shown) mounted in the hull 1. The propeller is configured to rotate as the shaft 6 rotates. Note that the above configuration is well known.

A cylindrical intervening member 7 whose outer diameter d is smaller than the inner diameter D of the casing 2 is fitted into the upper part of the casing 2 so as to be freely movable in the radial direction of the casing 2. The intervening member 7 has a plurality of oil passages 9 (five in the figure) with one end opening on the inner peripheral surface and the other end opening on the lower end surface, and each of the passages 9 on the inner peripheral surface. , 9 and the top passage 9
Recessed grooves 10 are provided above and below the lowermost passage 9, and a sealing member 11 is fitted into each of the recessed grooves 10, respectively.

Further, reference numeral 13 is a cylindrical member having a circular cross section. This cylindrical member 13 has a plurality of (the above-mentioned intervening member 7
The oil passages 14 have the same number of oil passages 9 as the passages 9 of The lower end is inserted into the intervening member 7 while being pressed, and is fixed to the hull 1 via the flange member 16 and bracket 23 fixed to the upper part. A passage 17 is formed in the flange member 16 and connects an oil supply device (not shown) to the passage 14 of the cylindrical member 13 . In addition, each passage 9 opening at the lower end surface of the intervening member 7 has an oil pipe 18 connected to a part to be oiled such as a propeller.
are individually inserted through through holes 19 formed in the flange 8. The through hole 19 is formed to be sufficiently larger than the oil pipe 18, and allows the intervening member 7 to freely move in the radial direction with respect to the casing 2. The rotating shaft 6 is located in the center hole 20 of the cylindrical member 13.
is inserted into.

A support member 24 is removably attached to the lower end surface of the cylindrical member 13 with a plurality of bolts 25 (only one is shown in the figure), and a support member 24 is attached to the lower end surface of the intervening member 7 for position adjustment. The member 26 is also detachably attached by a plurality of screws 27 (only one is shown in the figure). Support member 2
Reference numeral 4 supports the intervening member 7, and the upper surface 2 is disposed at a higher position than the upper surface 8a of the flange 8.
4a receives the position adjustment member 26 and supports the intervening member 7 so as to be freely movable in the radial direction of the casing 2. On the other hand, the position adjustment member 26 is for adjusting the relative attachment position of the intervening member 7 with respect to the cylindrical member 13, and can be replaced with a position adjustment member of a different thickness, or removed from the intervening member 7. The structure is such that the mounting position of the intervening member 7 with respect to the cylindrical member 13 can be adjusted by directly supporting the intervening member 7 on the support member 24. The position adjustment member 26 usually has a split structure because it needs to be easily replaced or removed. When the position adjusting member 26 is removed from the lower surface of the intervening member 7, insert the position adjusting member 26 or another member between the upper surface of the intervening member 7 and the presser flange 15,
As is, or with the intervening member 7 or presser flange 15
The intervening member 7 is fixed to prevent upward movement of the intervening member 7 with respect to the cylindrical member 13.

When using the support member 24 and the position adjustment member 26, the cylindrical member 1 is
By attaching the intervening member 7 to the support member 24 and supporting it on the support member 24, it is possible to test the sealing performance of the sealing member 11 in advance. If the sealing performance has deteriorated due to
By removing 6 and changing the contact position of the seal member 11, the sealing performance can be improved without modifying or replacing the cylindrical member 13. The sizes of the openings 9a, 14a of the passages 9, 14 are made large in consideration of the above. Support member 24
It is also possible to omit the intervening member 7 and support the intervening member 7 with the flange 8.

Note that the seal member 11 attached to the groove 10
is to close the space between the inner circumferential surface of the intervening member 7 and the outer circumferential surface of the cylindrical member 13 to prevent leakage of oil to the outside and short circuit. Although it is fitted into the groove 10, it is possible to provide a groove on the outer circumferential surface of the cylindrical member 13 and fit into it, or to provide a groove in both the intervening member 7 and the cylindrical member 13, and to fit the groove into the groove. It can also be made to fit in.
Furthermore, the opening 9a of the passage 9 provided in the intervening member 7 opens to the inner circumferential surface of the intervening member 7 over the entire 360 degrees, and the opening 9a opens to the inner circumferential surface of the intervening member 7.
The opening 14a of the passage 14 opens to the outer peripheral surface of the
Although the opening 9a of the passage 9 is opened only on a part of the outer peripheral surface, the opening 9a of the passage 9 is opened only on a part of the inner peripheral surface of the intervening member 7, and the opening 14a of the passage 14 is opened only on a part of the inner peripheral surface of the cylindrical member 1.
It is also possible to open the entire circumference of the outer circumferential surface of No. 3. Regardless of the rotation of the intervening member 7 relative to the cylindrical member 13, it is sufficient that the passages 14 and 9 are always in communication with each other.
This means that the sum of the opening angles of the other passages 14 that are communicated with this passage should exceed 360 degrees.

Thus, the reference numeral 21 denotes a seal that makes liquid tight between the inner circumferential surface of the passage 14 and the outer circumferential surface of the oil pipe 18 inserted into the passage 14.

Next, the operation of the oil distribution device in the Z-type propulsion device configured as described above will be explained.

The basic structure of the Z type propulsion system is well known as mentioned above. To move the ship, the propeller is rotated by the rotating shaft 6, and to change direction, the propeller is kept rotating and the casing 2 is rotated. Swirl.

In the above, when it is necessary to send oil to the oil-supplying target part of the propeller, when the oil is flowed through the passage 17 of the flange member 16 to the passage 14 of the cylinder member 13, the oil is transferred to the upper and lower seal members 11. , 11 to the passage 9 of the intervening member 7, and is sent to the oil supply target portion through the oil supply pipe 18. In addition, the oil that has reached its purpose at the target part is transferred to another oil pipe 1.
8 and other passages 14, 9, 17 to return to the oil supply device. When the center of the casing 2 is shifted from the center of the cylindrical member 13 due to rotation or the like, the intervening member 7 moves relatively within the casing 2 in the radial direction to maintain a normal relationship with the cylindrical member 13. Therefore, oil does not leak into the casing 2 due to eccentricity of the casing 2, and oils from different distribution systems do not mix with each other.

[Effect of idea]

As mentioned above, this invention is configured to allow oil to flow through the intervening member inserted into the casing in a freely movable manner in the radial direction of the casing. When the casing, which is supported in a cantilevered manner, is rotated, the direction of the bending moment acting on the casing changes, and as a result, the direction of flexure of the casing changes, causing the casing to become misaligned with respect to the cylindrical member. It may occur, but
Even in such a case, the intervening member moves relatively freely in the radial direction within the casing and maintains a normal relationship with the cylindrical member, so no oil leaks. Also,
Since the main parts of the distribution device are housed inside the casing, it is compact and does not adversely affect other equipment.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of an oil distribution device in a Z-type propulsion device of this invention, and FIG. 2 is a cross-sectional view showing a state in which an oil feed pipe is connected to a passage of an intervening member. DESCRIPTION OF SYMBOLS 1... Hull, 2... Casing, 6... Rotating shaft, 7... Intervening member, 9... Passage, 11... Seal member, 13... Cylindrical member, 14... Passage, 20...
...Central hole.

Claims (1)

[Scope of Claim for Utility Model Registration] A cylindrical intervening member within a casing that is rotatably provided on the ship's hull about a vertically arranged rotating shaft is movable approximately concentrically with the casing and in the radial direction of the casing. A cylindrical member is freely fitted between the intervening member and the rotating shaft, and is disposed in such a manner that its lower part overlaps with the intervening member and its upper part is fixed to the hull, and is formed in the intervening member. The oil passage that opens to the inner circumferential surface and the lower end surface, and the oil passage that opens to the outer circumferential surface and the upper end surface formed in the cylindrical member, are connected to the opening of the inner circumferential surface and the outer periphery at the overlapping part of the intervening member and the cylindrical member. The openings of the oil passages are opposed to each other and communicate with each other, and between the overlapping portion of the inner circumferential surface of the intervening member and the outer circumferential surface of the cylindrical member, there is provided a space between the upper and lower sides of the opening of the oil passage that communicates with each other. An oil distribution device in a Z-type propulsion device, characterized in that it is equipped with a sealing member that closes.