JPS62103297A - Marine engine mount device - Google Patents

Abstract

PURPOSE:To prevent engine beds from separating apart from each other, by disposing a coupling member having a resilient section between each upper support section and the associated lower support section in addition to a rubber member. CONSTITUTION:A rubber member 15 is disposed between an upper support section 12 provided each side of an engine 11 and the associated lower support section 14 provided on each engine bed 13. An engine side mounting section 20A is attached to a stay 19 secured to the upper support section 12 while an engine bed side mounting section 20B is attached directly to the lower support section 14, and both mounting sections 20A, 20B are connected to each other through the intermediary of a rod-like coupling member 21. That is, the coupling member 21 has resilient sections composed of rubber bushing 22A, 22B at both ends thereof, by means of which the coupling member 21 is connected to both mounting sections 20A, 20B. Accordingly, when both mounting sections are pulled apart from each other, the elastic deformation of the resilient sections allows the distance between the both mounting sections to be prolonged. As a result, it is possible to prevent engine beds from separating apart from each other.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a mounting device for a marine engine.

[Prior Art] Conventionally, as a mounting device for a marine engine, upper supports are provided on both sides of the engine, and lower supports are provided on the engine bed on the hull side facing each support. A rubber body is used between the two parts.

In the above-mentioned conventional mounting device, the corresponding upper support part and lower support part are arranged facing each other in a direction inclined to the vertical line, and the shear direction of the rubber body sandwiched between the two support parts is aligned with the main axis of inertia of the engine. Some are positioned in the rolling direction with a central axis. According to this mount device, the rubber body can not only damp vibrations in the vertical direction (pitching direction) of the engine, but also effectively damp vibrations in the rolling direction.

[Problems to be Solved by the Invention] However, when the upper and lower support parts are arranged to face each other in an oblique direction with respect to the vertical line as described above.

Based on the vertical vibration of the engine, the water W direction component of the downward inertial force acts on each engine bed on both sides of the engine via the lower supports on both sides of the engine. This horizontal force acting on the engine bed faces away from the engine and acts in a direction that separates the engine beds on both sides of the engine.

Therefore, when the engine is displaced with large acceleration and the downward inertial force of the engine increases, as when a ship jumps on waves and lands on the water, the horizontal force acting on the engine bed becomes excessive. In this case, the engine bed may be damaged due to excessive crotch opening, or even if the engine bed is not damaged, the rubber body may be damaged due to large displacement in the shear direction under the elastic crotch opening condition. This causes problems such as the bottom surface of the engine interfering with the bottom of the ship.

In order to prevent the engine bed from splitting apart, it is conceivable to connect the opposing lower support portions on both sides of the engine using a connecting member. However, in this case, since the connecting member crosses the oil pan at the bottom of the engine, there are disadvantages such as a complicated shape of the oil pan and a reduction in the capacity of the oil pan.

SUMMARY OF THE INVENTION An object of the present invention is to effectively attenuate vibrations in the vertical and rolling directions of an engine, and to reliably prevent the engine bed from splitting apart due to the downward inertial force of the engine.

[Means for Solving the Problems] The present invention provides upper support portions provided on both sides of the engine, and lower support portions provided on the engine bed on the hull side facing the upper support portions. In a marine engine mounting device, a rubber body is provided between the corresponding upper support part and the lower support part, and the corresponding upper support part and the lower support part are arranged facing each other in a direction inclined to the vertical line. A connecting member separate from the rubber body is disposed between the support parts, and the connecting member pulls the attachment part to the upper support part, the attachment part to the lower support part, and the attachment part to each other. When the grip is elastically deformed, the distance between both claw parts is allowed to increase.

[Operation] In the present invention, the shearing direction of the rubber body sandwiched between the upper support part and the lower support part is located in the rolling direction with the main axis of inertia of the engine as the central axis. As a result, the rubber body not only reduces vibrations in the vertical direction of the engine, but also effectively damps vibrations in the rolling direction.

Further, according to the present invention, when the engine is displaced downward with large acceleration due to a boat jumping on waves or the like, the connecting member pulls the engine bed toward the engine. As a result, the horizontal force in the crotch-opening direction exerted on the engine pet by the horizontal component of the downward inertial force based on the large displacement of the engine is offset by the horizontal component of the tensile force exerted on the engine bed by the connecting member, causing a large It does not cause the thighs to open.

In addition, since the above-mentioned connecting member is connected to the engine side attachment part and the engine bed side attachment part through the resilient part, the connection between the engine side attachment part and the engine bed side attachment part due to normal vibrations of the engine is The relative displacement between the rubber members is absorbed by the deformation of the single shot part, and the damping characteristics of the engine vibration by the rubber body are not adversely affected.

[Embodiment] FIG. 13 is a side view showing an example of a ship 1 to which the present invention is applied, and FIG. 1 is a front view showing a first embodiment of the present invention.

In this first embodiment, rubber is provided between each upper support part 12 provided on both sides of the engine 11 and a lower support part 14 provided on the engine bed 13 of the hull l in a state facing each upper support part 12. A body 15 is provided, and corresponding upper support portions 12 and lower support portions 14 are arranged to face each other in a direction inclined with respect to a vertical line.

16 is the oil pan of engine 11, 17 is the propeller shaft,
18 is a coupling.

Furthermore, in this first embodiment, the stay 19 is fixed to the upper support part 12, and the engine side mounting part 20 is attached to the stay 19.
A is provided, and an engine bed side attachment part 20B is provided on the lower support part 14 itself, and the corresponding engine side attachment part 20A and engine bed side attachment part 20B are connected by a rod-shaped connecting member 21 as shown in FIG. are doing. The connecting member 21 is arranged substantially horizontally when the engine 11 is normally installed, and is connected to the respective mounting portions 20A and 20B via resilient portions consisting of rubber bushes 22A and 22B at both ends. When the engine 11 is largely displaced downward, the end portion of the connecting member 21 attached to the engine side mounting portion 20A is connected to the engine 11 as shown in FIG.
, it is possible to apply a tensile force P toward the engine 11 to the lower support part 14 and the engine bed 13 based on the moving force of the engine 11.

Note that the upper support portion 12 and the lower support portion 14 are provided with locking portions 23A and 23B, respectively. Locking part 23A, 2
3B, when the downward displacement of the engine 11 becomes excessive, they collide with each other as shown in FIG. 3, making it possible to limit the downward displacement of the engine 11.

Figure 4 shows the downward displacement of the engine 11 and the rad 1 to the engine.
FIG. 3 is a diagram showing the relationship between force applied to F indicates that the horizontal component of the downward inertia force of the engine 11 is applied to the upper support portion 12, the rubber body 16. This is the horizontal force in the crotch opening direction that is applied to the engine bed 13 via the lower support part 14. PH is the horizontal component of the tensile force P that the connecting member 21 exerts on the engine bed 13. S is the maximum displacement of the engine 11 limited by the collision between the locking portions 23A and 23B.

The operation of the first embodiment will be explained below.

In the first embodiment, the upper support part 12 and the lower support part 1
The shearing direction of the rubber body 15 sandwiched between the engine 11 and
It moves in the rolling direction with the principal axis of inertia as the central axis.

Thereby, the rubber body 15 can effectively damp not only vibrations of the engine 11 in the vertical direction, but also vibrations in the rolling direction.

Further, in the first embodiment, when the engine 11 is displaced downward with large acceleration due to the ship l jumping over the ground of waves, etc., the connecting member 21 pulls the engine bed 13 toward the engine. As a result, the horizontal component of the downward inertial force based on the large displacement of the engine 11 exerts a horizontal force F in the crotch opening direction on the engine pendant 13.
is canceled out by the horizontal component PH of the tensile force exerted on the engine bed 13 by the connecting member L, so that the engine bed 13 does not have a large gap.

In the first embodiment, the connecting member 21 connects the engine side mounting portion 20A and the engine bed side mounting portion 20 with the rubber bushes 22A and 22B serving as resilient portions interposed therebetween.
B, the relative displacement between the two mounting parts 20A and 20B due to the normal vibration of the engine 11 is minute, and this displacement is absorbed by the entire deformation, and the rubber body 15
does not adversely affect the damping characteristics of the engine vibration.

Furthermore, in the first embodiment, the excessive downward displacement of the engine 11 is limited by the abutment between the locking parts 23A and 23B, so that the connecting member 21 applies an excessively large tensile force to the lower support part 14. , the engine bed 13 will not be damaged (damage in the direction opposite to the crotch opening direction).

FIG. 5 is a front view of main parts showing a second embodiment of the present invention.

This second embodiment differs from the first embodiment in that the corresponding engine side mounting portion 20A and engine bed side mounting portion 2
0B is connected only by a connecting member 31 made of a tension spring.

This connecting member 31 is connected to the engine 1 as shown in FIG.
1, the lower support portion 14. This makes it possible to pull the engine bed 13 toward the engine 11.

FIG. 7 is a front view of main parts showing a third embodiment of the present invention.

The third embodiment differs from the first embodiment only in that a connecting member 41 shown in FIG. 8 is used. In the connecting member 41, a rubber body 42 constituting a rippling part is sandwiched between a connecting part 41A on the side of the engine side attachment part 20A and a connecting part 41B on the side of the engine bed side attachment part 20B. .

This connecting member 41 does not include the rubber bushings 22A and 22B as in the connecting member 21 of the first embodiment.

9th UA is a front view of main parts showing a fourth embodiment of the present invention. This fourth embodiment differs from the third embodiment in that the connecting member 41 is arranged at an angle under normal installation conditions of the engine 11, and the connecting portion 41A side is slightly oriented downward. In this case, the tensile force exerted by the connecting member 41 on the lower support portion 14 and the engine rod 13 changes as shown in FIG. 1O.

PHm is the horizontal component of the tensile force when the connecting member 41 is in the horizontal position.

FIG. 11 is a front view showing a connecting member 51 according to a fifth embodiment of the present invention. This connecting member 51 can be used in place of the connecting member 41 of the fourth embodiment, and can connect the connecting portion 51A on the side of the engine side mounting portion 20A and the connecting portion 51B on the side of the engine bed side mounting portion 20B. A compression spring 52 constituting a resilient portion is sandwiched between them.

FIG. 12 is a front view of main parts showing a sixth embodiment of the present invention. This sixth embodiment differs from the first embodiment only in that a connecting member 61 is used. The connecting member 61 has a rubber body 62 which is capable of compressive deformation and slight shear deformation between the joint part 61A on the side of the engine side mounting part 20A and the joint part 61B on the side of the engine bed side mounting part 20B. It is sandwiched between.

(Effects of the Invention) As described above, the present invention provides upper support portions provided on both sides of the engine, and lower support portions provided on the engine head on the hull side facing each upper support portion. In a marine engine mounting device, a rubber body is provided between the corresponding upper support part and the lower support part, and the corresponding upper support part and the lower support part are arranged facing each other in a direction inclined to the vertical line. A connecting member separate from the rubber body is disposed between the support parts, and the connecting member pulls the attachment part to the upper support part, the attachment part to the lower support part, and the attachment part to each other. The elastic part is elastically deformed and allows the distance between the parts to be reattached to increase.

Therefore, in the present invention, the shearing direction of the rubber body sandwiched between the upper support part and the lower support part is located in the rolling direction with the main axis of inertia of the engine as the central axis. This results in
The rubber body not only damps vibrations in the vertical direction of the engine, but also can effectively damp vibrations in the low link direction.

Further, according to the present invention, when the engine is displaced downward with large acceleration due to a boat jumping on waves or the like, the connecting member pulls the engine bed toward the engine. As a result, the horizontal force in the crotch-opening direction exerted on the engine bed by the horizontal component of the downward inertial force due to the large displacement of the engine is offset by the horizontal component of the tensile force exerted on the engine bed by the connecting member, and the It does not cause a large groin area.

In addition,. The above-mentioned connecting member is connected to the engine side mounting part and the engine bed side mounting part through the elastic part, so that the vibration between the engine side mounting part and the engine bed side mounting part due to normal vibrations of the engine. The relative displacement is absorbed by the deformation of the resilient portion, and does not adversely affect the engine vibration damping characteristics of the rubber body.

[Brief explanation of drawings]

Fig. 1 is a front view of main parts showing a first embodiment of the present invention, Fig. 2 is a front view of a connecting member of the first embodiment, and Fig. 3 is a front view of main parts showing the operating state of the first embodiment. Fig. 4 is a line diagram showing the operating characteristics of the first embodiment, Fig. 5 is a front view of main parts showing the second embodiment of the present invention, and Fig. 6 is a line diagram showing the operating characteristics of the second embodiment. FIG. 7 is a front view 1 of main parts showing a third embodiment of the present invention.
, FIG. 8 is a front view showing the connecting member of the third embodiment, FIG. 9 is a front view of main parts showing the fourth embodiment of the present invention, and FIG. io is a diagram showing the operating characteristics of the fourth embodiment. , FIG. 11 is a front view showing a connecting member according to a fifth embodiment of the present invention, FIG. 12 is a front view of main parts showing a sixth embodiment of the present invention, and FIG. 13 is a front view showing a connecting member according to a fifth embodiment of the present invention. FIG. 2 is a side view showing an example of a ship. l... Ship, 11... Engine, 12... Upper support part, 13... Engine bed, 14... Lower support part,
15...Rubber body, 20A...Engine side mounting part. 20B...Engine bed side attachment part, 21...Connection member, 22A, 22B...Rubber bushings, 31...Connection member, 41...Connection member, 42...
Rubber body, 51... Connection member, 52... Compression spring, 6
1... Connecting member. 62...Rubber body. Agent: Patent Attorney Osamu Shiokawa 4. Is it strange? f+'5 Fig. 7 Fig. 9

Claims (1)

[Claims] (1) A rubber body is provided between each upper support part provided on both sides of the engine and each lower support part provided on the engine bed on the hull side in a state facing each upper support part, and In a marine engine mount device in which an upper support part and a lower support part are arranged opposite to each other in a direction inclined with respect to a vertical line, the rubber body is disposed between the corresponding upper support part and the lower support part. A separate connecting member is provided, and the connecting member is elastically deformed when the attachment portion to the upper support portion and the attachment portion to the lower support portion are pulled together, and the distance between the two attachment portions is reduced. A mounting device for a marine engine, characterized in that it has a resilient portion that allows expansion.