JPH05278687A - Oil drain structure for ship propeller - Google Patents

Abstract

PURPOSE:To enhance the oil discharging operation efficiency and achieve facilitation of the oil discharging operation by bringing the propeller device to a tilt-up condition wherein the upper portion of an oil pan is located over a hull, thereby enabling a discharged oil to be recovered into a hull via an oil discharge drain port. CONSTITUTION:In replacement of oil, in a case where the oil in an oil pan 24 is discharged, a propeller 10 is maximally tilted up. At this time, an engine 15 is located upwardly of a stern 2 of a hull 1, and a crank case 17 is inclined and situated in a lower position, by which the oil 27 gathers at an upper/front portion of the oil pan 24 shaped like V in section. Then, a top cover 14 of the propeller device 10 is demounted whereby a front discharge port 31 is released through removing a drain bolt 32. Then, a rear bolt 30 is removed to make a ventilation port 29 open. Thus, the oil 27 in the oil pan 24 flows out of the discharge port 31 to be recovered into an oil receiver 34 placed therebeneath.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain structure for a marine propulsion unit which is attached to the stern of a hull so that it can be tilted down and tilted up. In particular, the present invention relates to a drain structure for a propulsion device for a marine vessel, which enables the oil to be ejected and collected from the inside of the hull when the propulsion device is replaced with oil.

[0002]

2. Description of the Related Art As a propulsion device for a ship, a propulsion device for a ship, which is detachably attached to the stern of a hull and is upright and tiltable with respect to the stern, that is, can be tilted down and tilted up. The machine has been put to practical use for a long time. In this type of propulsion device, the entire propulsion device is attached to the stern with a stern bracket, and the propulsion device main body is rotatably supported by the stern bracket via a swivel case. In a tilt-down state where the propulsion unit is upright with respect to the stern, the lower propulsion unit is exposed to the water and the propulsion unit is operated to obtain propulsion force.In shallow water, the propulsion unit is tilted up to raise the seabed. It is operated so as not to interfere with, and the propulsion device is detached from the sea surface and the water surface in a tilt-up state in which the propulsion device is tilted upward, and the operation is stopped, moored, or landed on the beach.

The propulsion unit is composed of an upper engine section, a lower extension case, a lowermost propeller, etc., and the engine is provided with an upper cylinder section, a lower oil pan, etc.
The oil pan is provided with a drain hole for draining oil, and is conventionally disclosed in Japanese Patent Laid-Open Nos. 58-43895 and 3-2489.
No. 96 is disclosed.

In any of the above techniques, a drain hole is provided in the lower rear portion of the bottom surface of the oil pan of the propulsion device in the direction of propulsion, and the drain hole is opened on the outer side of the rear surface of the cover and normally closed by a drain bolt or the like. ..

[0005]

In the above-mentioned prior art, when the oil in the oil pan is discharged, the propulsion unit is set upright as shown in FIG. 1 and FIG. 2 of JP-A-3-248996. Under the tilt-down state or the tilt-up state in which it is tilted upward, open the drain hole at the rear bottom part of the oil pan, connect a hose, etc., discharge the oil outside the stern of the hull, and use a waste oil can etc. Collecting waste oil.

In the disclosed technique, the waste oil is discharged to the outside of the hull in both the tilt-down state and the tilt-up state, and even if the hose is connected or the waste oil can is collected by the waste oil can. Since the oil is discharged outside the hull, the oil discharge work is troublesome. or,
The work of tilting the propulsion device and the work of draining, collecting, and exchanging the oil have to be performed independently of each other, which is inferior in workability.

The present invention has been made to solve the above problems, and its object is to discharge the waste oil from the oil pan when the waste oil is discharged from the oil pan due to the oil change of the propulsion machine. The purpose of the present invention is to provide a drain structure for a propulsion device for a ship, in which oil draining workability is improved and work is facilitated.

[0008]

[Means for Solving the Problems] Means for solving the above-mentioned problems is to provide a propulsion device for a ship, which is rotatably supported so that it can be tilted down and tilted up with respect to a hull and is provided with an oil pan. In the oil pan of the propulsion machine,
A drain hole that can be closed or opened is provided, and the drain hole is provided as an oil discharge drain hole that faces the hull in a tilt-up state in which the upper part of the oil pan is inclined so that the upper part of the oil pan faces the hull side. Further, the oil drain structure of the marine vessel propulsion device is configured to collect the discharged oil into the hull via the oil draining drain hole when the propulsion device is tilted up. The oil discharge drain hole of the drain hole is provided above the oil level in the oil pan in a tilt-down state where the propulsion device is in an operating state, and the drain hole is formed in the oil pan of the propulsion device. It is provided in two places in the front and back, and one of them serves as the oil discharge drain hole in the tilted up state.
The other is used as a vent in a tilted-up state, and the oil drainage drain hole is an oil drainage structure for a marine propulsion machine that is provided with an oil drainage pipe extending inside the hull fixedly or detachably.

[0009]

According to the above means, in the tilt-up state with respect to the hull of the propulsion device, the engine part of the propulsion device faces the hull side including the oil pan, and the drain hole is opened to discharge the waste oil into the hull. To be done.

[0010]

An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of the stern part of a ship to which a ship propulsion device according to the present invention is attached, showing a main part of the propulsion device in a cutaway manner, in which the propulsion device can be tilted down and propelled. 2 is a view showing a state in which the drain hole is opened and waste oil is discharged in a tilt-up state of the propulsion device, and FIG. 3 is a diagram of a second embodiment of the propulsion device according to the present invention. FIG. 4 is a view similar to FIG. 2 showing a waste oil discharge state in the tilt-up state of FIG. 3 above.

In FIG. 1, reference numeral 1 denotes a hull, and a propulsion device 10 as an outboard motor is attached to a stern plate 3 of a stern 2 of the hull 1. The propulsion unit 10 is provided with a stern bracket 4 which is clamped and attached to an upper portion of the stern plate 3, and a swivel case 6 which is attached to the bracket 4 so as to be vertically rotatable with a tilt shaft 5, and the propulsion unit main body 11 includes a swivel body. It is attached to the case 6 and can rotate up and down with the tilt shaft 5 as a fulcrum. As shown in FIGS. 1 and 2, tilt down (FIG. 1) and tilt up (FIG. 2) can be performed via the tilt shaft 5. It is configured to be possible. Also, it can be rotated in the left-right direction via a steering shaft, and steering is thereby performed.

FIG. 1 shows a propulsion unit 10 attached to a stern plate 3.
Indicates an upright tilt-down state, the propulsion device 23 is in a state where it can be driven and propelled by being immersed in the sea or water, and in FIG. It is exposed to the top, operation is stopped, and it is in a state where it can be landed. In operating states other than the above states, there is also a state in which the upward tilt angle in FIG. 2 is made gentle, the amount of immersion of the propulsion device 23 into the sea / water is reduced, and shallow water propulsion is performed, which is directly related to the gist of the present invention. It is not shown because it does not. Reference numeral 7 shown in FIGS. 1 and 2 is a damper that restricts abrupt tilting of tilt down and tilt up.

The propulsion device 10 has an upper upper case 1
2, extension case 1 hanging down and extending
3, an engine 15 is provided in the upper case 12, and an upper portion of the engine 15 is covered with a cover 14 so as to be openable and closable. The engine 15 is a vertically mounted crankshaft, the cylinder portion 16, the crankcase 17, the cylinder head, and the head cover 18 are arranged at the same level, and an oil pan is installed so as to face the upper portion of the extension case 13.

The vertically mounted crankshaft 19 is connected to an extension shaft 20 that extends downward in the extension case 13 and extends therefrom.
Is connected to a propulsion shaft 22 via a bevel gear mechanism 21, and a propulsion device 23 arranged at a rear portion of a lower end portion of the extension case 13 is connected to a rear end portion of the propulsion shaft 22.
The propulsion device 23 is driven to obtain propulsion force.

An oil pan 24 having a substantially V-shaped cross section is provided below the engine 15, a strainer 26 is arranged near the bottom 25 of the oil pan 24, and oil 27 is stored in the lower half of the oil pan 24. Strainer 26 is hose 28
Is connected to an oil pump 29 (not shown) through which the oil 27 is pumped up and supplied to the lubrication portion of the engine 15 for lubrication.

A vent hole 29 is formed in the rear portion of the bottom portion 25 of the oil pan 24, and the vent hole 29 is closed by a bolt 30 so as to be openable and closable. Further, an oil discharge hole 31 forming a drain hole is opened in the front part of the oil pan 24, and the oil discharge hole 31 is closed by a drain bolt 32 so as to be openable and closable. Oil level 27
It is provided above -1. The bolt 30 of the ventilation hole 29 described above is configured to be screw-rotatable from the opening 33 provided in the middle upper portion of the extension case 13.

As described above, the propulsion device 10 is operated in the state shown in FIG.
Gain propulsion and promote sea and water. By the way, when the oil in the oil pan 24 is to be discharged in order to change the oil, the following procedure is performed.

The above propulsion device 10 is tilted up to the maximum. The propulsion unit 10 tilts upward as shown in FIG.
5 faces above the stern 2 of the hull 1, and the crankcase 17 inclines to the lower position. The tilt-up state is held by a stopper that can be freely engaged and disengaged. Oil 27 is in the oil pan 2
As a result of the tilting of the four, they gather at the front of the top of it. In this state, remove the cover 14 on the upper part of the propulsion unit 10, which is inclined,
The front discharge hole 31 is removed from the drain bolt 32. Along with this, the oil receiver 34 is previously arranged below the discharge hole 31, and after that, the bolt 30 at the rear portion is removed, and the vent hole 29 is removed.
Is opened, and the oil flows out to the oil receiver 34 at the stern of the hull and is collected. In this way, when the oil in the oil pan 24 is discharged, it can be discharged into the hull 1, and there is no need to perform the oil discharge, recovery, and replacement work outside the hull, for example, outside the stern.

As shown by the imaginary line in FIG. 2, the hose 3
5 is connected to the drain hole 31, and an oil receiver 3 is provided at the bottom of the stern 2.
4 may be arranged and oil may be collect | recovered. Only when the propulsion unit 10 is tilted up and the engine 15 is tilted up
Therefore, the oil 27 is exposed, and therefore, when the propulsion device 10 is tilted up, the discharge hole 31 is located below the oil discharge position and the oil can be discharged. It is shown in FIG.

3 and 4 show a second embodiment of the present invention. In this embodiment, an oil pan 124 is installed in a box shape below the engine 15, and is installed at the bottom of the bottom 125 of the engine.
A ventilation hole 129 is provided that is openably and closably closed by a bolt 130, and a discharge hole 131 is provided in the front portion. The discharge hole 131 is
It is bent and connected to the discharge pipe 135 that extends forward and upward,
The tip of the discharge pipe 135 is closed by a drain bolt 132 so that the discharge pipe 135 can be freely opened and closed.
The tip of 35 is located above the stern 3. As a matter of course, the tip of the discharge pipe 135 is the oil surface 27-1 of the oil 27.
Located above.

In this embodiment, the parts other than the oil pan, its discharge hole, and the discharge pipe are the same as those of the above-mentioned embodiment, and therefore, the same parts are designated by the same reference numerals and the description thereof will be omitted.

FIG. 3 shows a driving state in a tilt-down state. As shown in FIG. 4, the propulsion device 10 is tilted down so that the tip of the discharge pipe 135 faces downward in the upper part of the stern, and the oil receiver 34 faces under the tip of the discharge pipe 135.
Remove the drain bolt 132 at the tip of the
9 is opened by removing the bolt 130 and the oil is discharged.
Even in this case, the oil is discharged into the hull 1, and it is not necessary to perform the oil discharge and recovery work outside the stern and the like.

According to this embodiment, the cover 1 of the propulsion unit 10
Oil can be drained without removing 4. As shown by an imaginary line in FIG. 4, the oil receiver 34 may be placed on the bottom of the ship and a hose may be connected to receive the oil and collect the oil.

[0024]

As is apparent from the above, according to the present invention,
When the oil is discharged from the outboard motor type propulsion device, the propulsion device can be tilted up so that the upper part of the propulsion device faces the upper part of the stern and the oil can be discharged into the stern. Therefore, the oil can be changed inside the hull and the workability is extremely good.

In order to achieve the above effects, the oil discharge hole of the oil pan is provided in the front part so as to be higher than the oil surface, and the propulsion unit is tilted up to discharge the oil into the stern. Therefore, the above effect can be obtained with a simple structure, and the oil can be effectively discharged by setting the position of the discharge hole of the oil pan as described above and installing the ventilation hole, and the structure is simple, and the special mechanism or device can be used. The oil can be drained, collected, and replaced inside the hull without the need for.

In addition to the above, conventionally, when oil is changed, extra work such as removing the propulsion unit from the hull is not required, and the oil can be easily discharged. Further, when the oil is discharged, it can be performed only by tilting up the propulsion device as described above, and the oil exchange time can be significantly shortened, and the oil exchange can be efficiently performed in combination with the simplification of the work as described above. Has the effect of.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a stern portion of a ship equipped with a propulsion device for a ship according to the present invention, showing a main part of the propulsion device in a cutaway manner, in which the propulsion device can be tilted down and propelled. State diagram

FIG. 2 is a diagram showing a state in which a drain hole is opened and waste oil is discharged when the propulsion device is tilted up.

FIG. 3 is a view similar to FIG. 1 of a second embodiment of a propulsion device according to the present invention.

FIG. 4 is a view similar to FIG. 2 showing a waste oil discharge state in the tilt-up state of the propulsion device of FIG. 3;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hull, 10 ... Propulsion machine, 24,124 ... Oil pan, 27 ... Oil, 27-1 ... Oil surface, 29 ... Vent hole, 31,131 ... Drain hole, 35, 135 ... Oil discharge pipe.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhiro Yamaguchi 1-13-1 Aoihigashi, Hamamatsu City, Shizuoka Prefecture Honda Motor Co., Ltd. Hamamatsu Factory

Claims (4)

[Claims] 1. A marine propulsion device which is rotatably supported with respect to a hull so that it can be tilted down and tilted up, and is provided with an oil pan. A drain capable of being closed and opened in the oil pan of the propulsion device. A hole is provided, and the drain hole is arranged as an oil discharge drain hole facing the hull in a tilt-up state in which the upper part of the oil pan is inclined so that the upper part of the oil pan faces the hull side. An oil drain structure for a marine propulsion device, which is configured to collect the discharged oil into the hull via an oil discharge drain hole in a tilted-up state. 2. The marine propulsion device according to claim 1, wherein the oil discharge drain hole of the drain hole is provided above the oil level in the oil pan in a tilt-down state in which the propulsion device is in an operating state or the like. Oil drain structure. 3. The drain hole is provided at two positions before and after the oil pan of the propulsion device, one of which serves as the oil drain drain hole in a tilted-up state, and the other serves as a ventilation hole in a tilted-up state. Or, the oil drain structure of the marine propulsion device of 2. 4. The oil drain structure for a marine vessel propulsion device according to claim 1, 2 or 3, wherein the oil drainage drain hole is provided with an oil drainage pipe extending inside the hull so as to be fixed or detachable.