JPH07101394A - Engine support device for marine engine - Google Patents

Abstract

PURPOSE:To cope with an impact load exerted on a marine engine through simple structure. CONSTITUTION:In an engine support device for a marine engine 2, engine brackets are arranged on both sides of the cylinder block 8 of a marine engine 2 and an engine bracket 14 is supported to a ship hull, the engine brackets 14 arranged on both sides of the cylinder block 8 are coupled by a coupling member A arranged below the marine engine 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine support device for a marine engine that supports the marine engine on a hull.

[0002]

2. Description of the Related Art A marine engine is mounted in the hull of a ship, and a propulsion device is driven by this marine engine to obtain propulsion. Some marine engines are provided with engine brackets on both sides of a cylinder block, and the engine brackets are supported on a hull via rubber mounts, for example.

[0003]

By the way, in recent engines, the cylinder block has a tendency to be formed in a thin wall in order to reduce the weight thereof. Has a part where the rigidity is reduced.

For example, at high speed or when the hull jumps and lands on a water surface, a shock load is applied to a portion of the cylinder block where the engine bracket is provided. The impact load when jumping and landing tends to increase.

Therefore, it is conceivable to thicken the portion of the cylinder block where the engine bracket is provided. However, this goes against the weight reduction of the cylinder block, and the cylinder block of a marine engine such as a low-speed boat also becomes thicker.
There is a problem that the marine engines cannot be shared.

The present invention has been made in view of the above points, and an object thereof is to provide an engine support device for a marine engine, which has a simple structure and can cope with an impact load applied to the marine engine.

[0007]

In order to solve the above-mentioned problems, the present invention provides an engine support device for a marine engine, wherein engine brackets are provided on both sides of a cylinder block of the marine engine, and the engine brackets are supported on a hull. It is characterized in that the engine brackets provided on both sides of the cylinder block are connected by a connecting member arranged below the marine engine.

[0008]

In the present invention, for example, when the hull jumps and lands on the water, impact loads are applied to the engine brackets provided on both sides of the cylinder block. The engine brackets on both sides are connected to the lower side of the marine engine. Since they are connected by members, the bending moment applied to both sides of the cylinder block is reduced by the tensile force of the connecting members.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of an engine support device for a marine engine according to the present invention will be described in detail below with reference to the accompanying drawings.
1 is a side view of a ship to which the present invention is applied, and FIG. 2 is a side view of FIG.
A sectional view taken along line II-II, FIG. 3 is a sectional view of a rear side support portion of the marine engine, FIG. 4 is a front view of a front side support portion with a part of the marine engine cut away, and FIG. 5 is a front side support portion of the marine engine. 7 is a front view of FIG. 6, FIG. 6 is a plan view of a front side support portion of the marine engine, and FIG.
FIG. 4 is a side view of a front side support portion of the marine engine.

A marine engine 2 is mounted on the inner rear side of the hull 1 of the marine vessel, a front side of the marine engine 2 is mounted on a ship bottom 3, and a rear side thereof is mounted on a stern plate 4. A propulsion device 5 is supported on the outside of the stern plate 4 of the hull 1, and the power of the marine engine 2 is transmitted to the propeller 6 of the propulsion device 5 to obtain propulsion force.

As shown in FIG. 3, a mounting portion 7a is formed on the rear side of the engine case 7 of the marine engine 2, and the mounting portion 7a is attached to the supporting portion 4a of the stern plate 4 by the rubber mount 50.
Is supported through. The rubber 51 of the rubber mount 50 is inserted into the support portion 4a of the stern plate 4, and the bolt 53 is inserted into the rubber 51 via the collar 52 from the lower side through the plate 54.
5 is screwed through the plate 56. The mounting portion 7a of the engine case 7 is inserted into the bolt 53 attached to the support portion 4a of the stern plate 4, and the plate 57 is attached to the mounting portion 7a by screwing the nut 58.

The rear side of the engine case 7 has a bottom 3
May be supported by a rubber mount, or may be directly supported instead of the rubber mount.

A cylinder block 8 is provided in the engine case 7.
Further, the engine case 7 is provided with a ladder frame 9 having a bearing, and a crank shaft 10 is pivotally supported by the ladder frame 9 and the cylinder block 8. The crankshaft 10 is connected to a piston via a connecting rod (not shown), and the reciprocating motion of the piston causes the crankshaft 10 to move.
To rotate. Cylinder block 8 has cylinder head 1
1 is attached, and the cylinder head 11 is covered with a head cover 12. An oil pan 13 is provided below the engine case 7.

The cylinder block 8 of the marine engine 2 is
The cylinder block 8 is formed thin to reduce its weight, and mounting portions 8a are integrally provided on both front sides of the cylinder block 8. The engine brackets 14 are fastened and fixed to the mounting portions 8a on both sides with bolts 15, respectively.
A tip portion 14a of the engine bracket 14 is fixed to a support portion 3a provided on the ship bottom 3 by a double nut 18 on a shaft portion 17 of a rubber mount 16. The engine bracket 14 may be directly supported by the support portion 3a of the ship bottom 3 without using the rubber mount 16.

The mounting portions 14b are provided below the engine brackets 14 on the front side of the cylinder block 8.
Are integrally formed, and a stay 19 is fastened and fixed to the mounting portion 14b with bolts 20.
Is protruding downward. Both ends 21a of a tie rod 21 are tightened and fixed by a nut 22 between the stays 19 on both sides, and the tie rod 21 is recessed into the recess 13a of the oil pan 13.
It is located below and opposite. Stay 1 on both sides
9, marine engine 2 with tie rods 21 and nuts 22
It constitutes a connecting member A arranged on the lower side.

Therefore, when the hull 1 jumps and lands on the water, an impact load is applied to the engine brackets 14 provided on both sides of the cylinder block 8. The engine brackets 14 on both sides are arranged below the marine engine 2. Since they are connected by the connecting member A, the bending moment applied to the mounting portions 8a provided on both sides of the cylinder block 8 is replaced with the tensile force of the connecting member A to reduce the bending moment.

The stay 19 is the engine bracket 1.
4, the tie rod 21 may be fastened and fixed to the stay 19 with a nut 22.
The tie rod 21 may be integrally formed and fastened and fixed to the engine bracket 14.

FIG. 8 is a front view of a front support portion showing another embodiment of the engine support device for a marine engine. In this embodiment, mounting portions 13b are provided on both sides of the oil pan 13, and the stays 19 mounted on the engine bracket 14 are fastened and fixed to the mounting portions 13b with bolts 30. As described above, the connecting member A arranged below the marine engine 2 is configured by using the oil pan 13. The oil pan 13 may be made of a casting or an iron plate.

FIG. 9 is a sectional view of a ship to which the present invention is applied. In this embodiment, two marine engines 2 are mounted on the hull 1 of the marine vessel. The marine engines 2 are arranged side by side with the central portion in between, and the supporting portions 3a on the inner side of the hull 1 are raised so that the marine engines 2 do not tilt. The connecting members A arranged below the respective marine engines 2 connect the engine brackets 14 provided on both sides of the cylinder block 8.

FIG. 10 is a side view of another embodiment of the ship to which the present invention is applied. In this embodiment, a marine engine 2 is mounted in the center of the inside of a hull 1 of a marine vessel, the front side of the marine engine 2 is mounted on a ship bottom 3, and the propulsion unit 4 is mounted on the rear side.
0 is connected, and this propulsion unit 40 is mounted on the ship bottom 3. The drive shaft 41 of the propulsion device 40 penetrates the ship bottom 3, and the power of the marine engine 2 is transmitted to the propeller 42 via the drive shaft 41 of the propulsion device 40 to obtain propulsion force. The marine engine 2 and the propulsion unit 40 are shown in FIGS.
Similarly to the embodiment shown in FIG. 3, the rubber support 16 is supported on the bottom 3 of the ship.

[0021]

As described above, according to the present invention, the impact load is applied to the engine brackets provided on both sides of the cylinder block when the hull jumps and lands on the water. Since it is connected by the connecting member placed on the side, the bending moment applied to both sides of the cylinder block can be reduced by replacing it with the tensile force of the connecting member, which makes it possible to reduce the impact load applied to the marine engine with a simple structure. It is possible to reduce the weight of the marine engine by making the cylinder block thin.

[Brief description of drawings]

FIG. 1 is a side view of a ship.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a cross-sectional view of a rear side support portion of a marine engine.

FIG. 4 is a front view of a front side support portion in which a part of the marine engine is broken.

FIG. 5 is a front view of a front support portion of the marine engine.

FIG. 6 is a plan view of a front side support portion of the marine engine.

FIG. 7 is a side view of the front support portion of the marine engine.

FIG. 8 is a front view of a front support portion showing another embodiment of the engine support device for a marine engine.

FIG. 9 is a cross-sectional view of another embodiment of a ship to which the engine support device for a marine engine is applied.

FIG. 10 is a side view of another embodiment of a ship to which the engine support device for a marine engine is applied.

[Explanation of symbols]

 1 hull 2 marine engine 8 cylinder block 14 engine bracket 16 rubber mount A connecting member

Claims (1)

[Claims] 1. An engine support device for a marine engine, wherein engine brackets are provided on both sides of a cylinder block of the marine engine, and the engine brackets are supported on a hull of the marine engine. The cylinder is a connecting member arranged below the marine engine. An engine support device for a marine engine, wherein the engine brackets provided on both sides of a block are connected.