JPH0555358B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a refueling device for a counter-rotating propeller device.

[Conventional technology]

As a conventional device for supplying lubricating oil via this type of rotating shaft, there is a rotary joint shown in FIG.

In the above rotary joint, the hollow sleeve 29 is connected to the main body 28 by the bearing 35.
The threaded portion at the tip of the sleeve 29 is attached to the center portion of the tip of a rotating shaft (not shown) and rotates. A sleeve insert 31 press-fitted into the sleeve 29 and a floating seat 32 inserted into the main body 28 slide against each other to form a fluid tight seal. The floating sheet 32 is pressed against the surface of the sleeve insert 31 with a predetermined force applied by a spring 34. O-ring 3
3 seals between the floating sheet 32 and the main body 28 by a spring 34 and its own restoring force. In this way, lubricating oil is supplied through the oil supply port 36, the floating seat 32, and the hollow part of the sleeve 29 to an oil supply hole bored in the center of the tip of the rotating shaft (not shown).

[Problem that the invention seeks to solve]

With conventional rotary joints like this,
There is a problem in that it is difficult to attach it to a rotating shaft, such as a counter-rotating propeller device, where one end is connected to a propeller and the other end is connected to a prime mover or the like.

In view of this situation, an object of the present invention is to provide a refueling device for a counter-rotating propeller device that can refuel a refueling hole drilled in the outer periphery of a rotating shaft.

[Means for solving problems]

For this reason, the refueling device for the counter-rotating propeller device of the present invention branches the power of the prime mover, transmits a part of it to one propeller via the internal rotating shaft, and transmits the remaining part to the joint, the reversing device, and the external part. In a refueling device for a contra-rotating propeller device that transmits oil to the other propeller via the rotating shaft of the propeller, in order to supply oil to the refueling hole drilled in one of the rotating shafts, the axial direction of the refueling hole is two floating seal rings disposed around the rotating shaft in the front and rear and having bearing metal on the inner circumferential surface; a housing that accommodates the floating seal rings therein; and a housing provided at both ends of the housing in the axial direction. It is characterized by being equipped with a sealing device for recovering leaked oil.

[Effect]

In the above-mentioned oil supply device for a counter-rotating propeller device of the present invention, since there are two floating seal rings installed around the rotating shaft and having bearing metal on the inner peripheral surface, it is possible to supply high-pressure oil and further prevent leakage. The leaked oil can be recovered by the hot water recovery sealing device.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. Figures 1 to 3 are embodiments of the present invention;
The figure shows a refueling device A for a counter-rotating propeller device of the present invention.
2 is a cross-sectional view of the oil supply device of the contra-rotating propeller device according to the first embodiment. FIG. 3 is a front sectional view of a floating seal ring as a second embodiment.

In FIG. 1, A is a refueling device for a counter-rotating propeller device of the present invention, 21 is an output shaft of a prime mover, and 2
5 is an elastic joint, 25a is a solid shaft of the elastic joint, 26
is a reversing device, and 27 is an internal rotating shaft. An assembly flange 24 is press-fitted into the front part of the solid shaft 25a, and is connected to an output flange 22 of an output shaft 21 of the prime mover by a line bolt 23. or,
The solid shaft 25a has a concentric hole 20 formed in the axial direction, and a plurality of oil supply holes 19 radially extending from the vicinity of the tip of the concentric hole 20.

The details of the oil supply device A of the counter-rotating propeller device of the present invention will be explained with reference to FIG. The housings 5 and 6 are fixed to the housings 5 and 6. Reference numeral 4 denotes a rotation prevention pin for the floating seal ring 1. Further, 8 is an O-ring.

Seal devices 11 for recovering leaked oil are attached to both ends of the housings 5 and 6 via gaskets 7 with tightening bolts 9 and stud bolts 10. Note that the leaked oil recovery sealing device 11
Seal lip 14, seal ring 12,1
3. Seal liner 15 installed on the solid shaft
and a fixture 16. Further, the housing 5 is provided with an oil supply port 17, and the seal ring 13 is provided with an oil drain hole 18.

In this way, the floating seal ring 1, the housings 5, 6, and the seal device 11 for recovering leaked oil are installed in an annular manner around the solid shaft 11, and their assembly and disassembly is performed on the output shaft 21 of the prime mover. After removing the assembly flange 24, this is done by inserting and removing the solid shaft 25a from the tip side.

Further, in the second embodiment shown in FIG. 3, the floating seal ring 1 is divided into two by a dividing surface 1b, and can be assembled and disassembled using a tightening bolt 1a. Therefore, the floating seal ring 1 can be easily inspected, assembled and disassembled without moving the output shaft 21, output flange 22, and assembly flange 24 of the prime mover.

With the configuration described in detail above, lubricating oil supplied from a lubricating oil pump (not shown) enters into the circumferential oil supply device A of the present invention through the oil supply port 17 provided in the housing 5. , most of which are oil supply holes 1 drilled in the rotating solid shaft 25a.
9 into the concentric hole 20. Lubricating oil leaks from the gap between the bearing metal 2 on the inner peripheral surface of the floating seal ring 1 and the solid shaft 25a due to the pressure difference of the lubricating oil, but this leaked oil is absorbed by the The leaked oil collects in the sealing device 11, is collected through the oil supply port 17 provided in the seal ring 13, and is returned to the lubricating oil tank (not shown).

Above, we have described the case where oil is supplied to the oil supply hole drilled in the internal rotation shaft in a shaft system having two rotating shafts, external and internal. The refueling device of the counter-rotating propeller device of the present invention may be attached to the hole to supply refueling.

〔Effect of the invention〕

As described in detail above, according to the oil supply device for a counter-rotating propeller device of the present invention, it is possible to supply lubricating oil to the internal rotating shaft of the counter-rotating propeller device, and it is possible to supply lubricating oil to the internal rotating shaft of the counter-rotating propeller device. The nearby lubrication device can be simplified, making assembly, inspection, and maintenance easier. Furthermore, even when high-pressure lubricating oil is supplied to the inner hydrostatic bearing, etc., loss due to leakage of the lubricating oil can be prevented.

[Brief explanation of drawings]

Figures 1 to 3 show embodiments of the present invention, and Figure 1 is a cross-sectional view when the oil supply device of the contra-rotating propeller device of the present invention is attached to the solid shaft of the elastic joint of the contra-rotating propeller device. FIG. 2 is a detailed cross-sectional view of the oil supply device for the counter-rotating propeller device as a first embodiment, and FIG. 3 is a front cross-sectional view of a floating seal ring as a second embodiment. FIG. 4 is a sectional view of a rotary joint of a conventional oil supply device. A...Quick oil device for counter-rotating propeller device, 1...
...Floating seal ring, 1a...Tightening bolt, 2b...Split surface, 2...Bearing metal,
3... Spring, 4... Stopping pin, 5,
6...Housing, 7...Gasket, 8...O
Ring, 9... Tightening bolt, 10... Studded bolt, 11... Seal device for collecting leaked oil, 1
2, 13...Seal ring, 14...Seal lip, 15...Seal liner, 16...Fixing metal fittings, 17...Oil filler port, 18...Oil drain hole, 19...
Oil supply hole, 20...Concentric hole, 21...Output shaft, 22
... Output flange, 23 ... Reamer bolt, 24
...Assembly flange, 25...Elastic joint, 25a...
... solid shaft, 26 ... reversing device, 27 ... internal rotating shaft.

Claims (1)

[Claims] 1. Branching the power of the prime mover and transmitting part of it to one propeller via an internal rotating shaft, and transmitting the remaining part to the other propeller via a joint, a reversing device, and an external rotating shaft. In a refueling device for a counter-rotating propeller device for transmitting transmission, in order to supply oil to a refueling hole drilled in any one of the rotating shafts, the refrigerating hole is provided around the rotary shaft at the front and rear of the axial direction of the refueling hole. Two floating seal rings each having a bearing metal on an inner circumferential surface, a housing that houses the floating seal rings therein, and a leakage oil recovery seal device provided at both ends of the housing in the axial direction. A refueling device for a counter-rotating propeller device. 2. The contra-rotating propeller device according to claim 1, wherein the floating seal ring is a floating seal ring that is divided into a plurality of parts and can be assembled and disassembled using fastening members such as tightening bolts. refueling device.