JP2579356Y2 - Anti-vibration stay device for marine engine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration stay device for a main marine engine such as a top bracing for fixing an engine of a marine vessel to a hull while damping the engine.

[0002]

2. Description of the Related Art Prior art of a conventional anti-vibration stay device for a marine engine is disclosed in, for example, Japanese Utility Model Application Laid-Open No. 63-16300, Japanese Patent Application Laid-Open No. 63-26440, Japanese Utility Model Application Laid-Open No. 1-173541, and Japanese Patent Application Laid-Open No. Hei 2-173541. It is disclosed in, for example, Japanese Patent No. 256593. In recent years, hulls have been made of high-tensile steel plates to reduce weight. In a hull using such a high-tensile steel plate, the amount of deformation of the hull due to ballast adjustment or the like becomes extremely large. The above-described anti-vibration stay device according to the prior art cannot cope with a large amount of deformation.

For example, in the prior art disclosed in Japanese Utility Model Laid-Open Publication No. 63-16300, displacement and vibration in the longitudinal direction connecting the marine marine engine and the hull cannot be effectively absorbed. The prior art disclosed in JP-A-63-26440 is effective in the longitudinal direction of the stay device, but does not have sufficient anti-vibration and deformation functions in the vertical direction. In the prior art disclosed in Japanese Utility Model Laid-Open Publication No. 1-173541, a vibration-proof stay is vibration-proofed at a portion attached to a hull. It is not effective for displacement or vibration in the direction perpendicular to the longitudinal direction of the stay device. JP-A-2-2565
In the prior art disclosed in Japanese Patent No. 93, the generation of vibration from the marine main engine itself is suppressed. It cannot respond to hull displacement.

FIGS. 16 to 19 show another technique proposed as a marine anti-vibration stay device. 7 is a cross-sectional view taken along the line AA of FIG. 16, and FIG. 19 is a cross-sectional view taken along the line BB of FIG. In the configuration shown in FIGS. 16 and 17, pins 3 and 4 are arranged at both ends in the longitudinal direction of parallel channel steels 1 and 2. Connecting members 5 and 6 are interposed between the channel steels 1 and 2 and fixed by bolts 7 and 8. The hull pin 3 is inserted through the pair of flat plates 9 and 10.
The hydraulic bolts 11 and 12 are inserted through the flat plates 9 and 10. The hydraulic bolts 11 and 12 apply a pressing force when the mounting member 15 is clamped via the friction plates 13 and 14. The mounting member 16 is provided with a through-hole larger than the diameter of the hydraulic bolts 11 and 12, and is capable of sliding displacement with the friction plates 13 and 14 interposed. The mounting member 15 is a welded portion 1 on the hull side.
6 secures it to the hull 17. With this configuration, the displacement and vibration in the direction connecting the hull and the marine main engine are absorbed by the sliding displacement of the friction plates 13 and 14. The vertical displacement in FIG. 16 is absorbed by the angular displacement about the pin 3 as an axis. Channel steel 1, Pin 4 at the other end
Is inserted through the mounting member 18. The mounting member 18 is fixed to the marine engine.

In FIGS. 18 and 19, flat plates 9, 10 are directly welded at one end without using pins at both ends of the channel steels 1, 2. FIG. Furthermore, the clamping pressure of the mounting member 15 via the friction plates 13 and 14 is generated by adjusting the mechanical tightening force of the bolts 21 and 22. The other ends of the channel steels 1 and 2 are directly welded to the mounting members 23 and 24, and the mounting members 23 and
24 is welded to the marine main engine.

[0006]

In the technology shown in FIGS. 16 to 19, the provision of the friction plates 13 and 14 not only absorbs vibration and displacement in the longitudinal direction, but also provides vibration in the direction perpendicular to the longitudinal direction. And displacement can also be absorbed.
However, the displacements and vibrations of the flat plates 9 and 10 in the thickness direction cannot be sufficiently followed because the lengths of the flat plates 9 and 10 are short. For this reason, when the bending load on the flat plates 9 and 10 increases, for example, it is easy to break at the break point 25.

SUMMARY OF THE INVENTION An object of the present invention is to provide an anti-vibration stay device for a marine marine engine capable of responding to displacements in various directions and achieving an effective anti-vibration effect.

[0008]

SUMMARY OF THE INVENTION The present invention provides a vibration isolating stay device for a marine main engine for connecting a marine main engine and a hull while damping the hull, and a pair of flat plates extending in a connecting direction between the marine main engine and the hull. A pin is connected to a flat plate at one end in the direction, and a mounting member in which a pin insertion hole larger than the diameter of the pin is formed, a friction member interposed between the flat plate and the mounting member, and an intermediate portion between the flat plates to maintain a distance between the flat plates And a connecting member for connecting the flat plates to each other.

Further, the present invention is characterized in that the flat plate includes a mounting member which is pin-connected at the other end in the connecting direction.

Further, each of the flat plates of the present invention is formed by laminating a plurality of thin plates.

In the present invention, the pin is mounted so that the axial direction of the pin is perpendicular to the direction in which the relative displacement between the marine engine and the hull is large.

[0012]

According to the present invention, the mounting member has an insertion hole larger than the diameter of the pin, and a friction member is interposed between the mounting member and the flat plate. For this reason, between the mounting member and the flat plate, displacement by the difference between the insertion hole and the diameter of the pin is possible,
This displacement is damped by the sliding resistance of the friction member. Since the middle portion of the flat plate includes a connecting member for maintaining the interval between the flat plates, the bending displacement of the flat plate is also easy. Since the pin is connected between the mounting member and the flat plate, displacement about the axis of the pin is easy.

According to the invention, the mounting member is also pin-connected to the other end of the flat plate in the connecting direction. As a result, even if the relative displacement between the marine vessel main engine and the hull becomes large, it is possible to sufficiently follow the two pins together.

According to the present invention, each flat plate is formed by laminating a plurality of thin plates. Thus, the strength in the longitudinal direction can be increased without increasing the bending rigidity.

Further, according to the present invention, since the axial direction of the pin is perpendicular to the direction in which the relative displacement between the marine vessel main engine and the hull is large, the large displacement can be absorbed by utilizing the angular displacement around the pin. it can.

[0016]

1 and 2 show the construction of an anti-vibration stay device according to a first embodiment of the present invention. 1 is a sectional view, FIG.
1 shows a plan view, and FIG. 1 corresponds to a cross-sectional view taken along line II of FIG. In these figures, a pair of flat plates 33 and 34 extending in the longitudinal direction are provided to connect the upper side of the marine engine 31 such as a diesel engine and the hull 32 while damping the vibration. The flat plate 33 is a thin flat plate 33a,
33b, and the other flat plate 34 is also a thin flat plate 34.
a and 34b are formed by lamination. A connecting member 37 including a bolt 35 and a spacer 36 is provided at an intermediate portion between the flat plates 33 and 34. The connection member 37 maintains the space between the flat plates 33 and 34 by the spacer 36. For each of the flat plates 33a, 33b; 34a, 34b, not only a structural steel plate but also a spring steel, a vibration-proof steel plate, a synthetic resin plate or the like can be used.

At the ends of the flat plates 33 and 34 on the hull 32 side,
Bolts 38 and 39 are inserted. The axes of the bolts 38, 39 act as pins. Ship main engine 3 of flat plates 33 and 34
Bolts 40 and 41 are also inserted into one side. Bolt 4
The axes 0, 41 also act as pins. Bolts 38, 39
Is loosely inserted into a mounting member 42 having an insertion hole larger than the diameter of the bolt on the hull 32 side. The bolts 40 and 41 on the marine main engine 31 are also loosely inserted into the mounting member 43 in which an insertion hole larger than the shaft diameter of the bolts 40 and 41 is formed. The mounting members 42 and 43 are respectively connected to the hull 32 and the marine engine 3.
1 are welded by welding portions 44 and 45. On both sides of the mounting member 42, friction plates 46, 47 are interposed. Friction plates 48, 49 are also interposed on both sides of the mounting member 43. The friction plates 46 and 47 are, for example, solidified inorganic materials, and are fixed to the mounting member 42 by bolts 50. The friction plates 48 and 49 are fixed to the mounting member 43 by bolts 51. The bolt 39 presses the flat plates 33 and 34 via the washers 52 and 53 and the liners 54 and 55. Flat plate 3
A liner 56 is interposed between 3 and friction plate 46. A liner 57 is interposed between the flat plate 34 and the friction plate 47. A lock nut 58 and a tightening nut 59 are screwed into the distal end side of the bolt 39. These liners 54,5
5, 56, 57, the friction plates 46, 47, the flat plates 33, 34, and the mounting member 42, and a positioning pin hole 60 is formed.

The bolts 41 on the marine main engine 31 are also:
As with the bolt 39, the washers 62 and 63, the liner 6
4, 65, 66, 67, a lock nut 68 and a tightening nut 69 are used. The other bolts 38 and 40 have the same configuration. Positioning pin holes 70 are also formed on the bolts 40 and 41 side.

When forming the welded portions 44 and 45, positioning pins are inserted into the positioning pin holes 60 and 70 to suppress sliding displacement between the mounting members 42 and 43 and the flat plates 33 and 34. When the bolts 39, 41 are tightened by the tightening nuts 59, 69, the torque is controlled so that the friction plates 46, 47, 48, 49 can slide.

FIG. 3 shows a state where the anti-vibration stay device shown in FIG. 1 is mounted on a ship. The top bracing 71, which is an anti-vibration stay device, connects the upper part of the marine engine 31 and the hull 32, and supports the marine engine 31 while preventing vibration. The hull 32 side of the top bracing 71 is welded to the hull 72. A hull 32 is provided with a hull bottom 73 outside a hull 72, and a plurality of decks 74, 75, 76 are formed. The marine engine 31 is mounted on the lowermost deck 76. However, the marine main engine 31 is, for example, a multi-cylinder diesel engine, and the vibration of the upper part thereof becomes large. Therefore, it is necessary to support the top bracing 71 while preventing vibration. In particular, when the engine room is arranged at the stern or near the stern, the marine vessel main engine 31 is installed in a portion near the stern of the hull and near the propeller, so that the bottom 73 is thin. A plurality of top bracings 71 are provided along the longitudinal direction of the marine engine 31.

4 to 15 show an anti-vibration stay device according to another embodiment of the present invention. 4 and 5 show the second embodiment, FIGS. 6 and 7 show the third embodiment, FIGS. 8 and 9 show the fourth embodiment, FIGS. 10 and 11 show the fifth embodiment, FIGS. 12 and 13. 14 shows a sixth embodiment, and FIGS. 14 and 15 show a seventh embodiment. FIGS. 4, 6, 8, 10 and 12 are sectional plane lines IV-IV, VI-VI and VIII-VI of FIGS. 5, 7, 9, 11 and 13, respectively.
II, XX, and XII-XII are cross-sectional views, and FIGS. 5, 7, 9, 11, 13, and 15 are plan views. FIG. 14 shows a side view. Parts corresponding to the first embodiment are denoted by the same reference numerals. In each of these embodiments, the diameter of the insertion hole of the mounting member 43 through which the single marine engine 31-side bolt 41 is inserted is formed by reaming, and does not follow the sliding displacement in the longitudinal direction. This allows only angular displacement in a plane perpendicular to the axis of the bolt 41 as a pin. In addition, the spacer 36 is formed of lightweight steel to minimize the influence on the displacement followability,
Buckling due to the axial force and resonance with the engine excitation force can be sufficiently prevented. In the fifth embodiment shown in FIGS. 10 and 11, the length of the flat plate is long.
The bending stress can be reduced even if each of the members 3 and 34 is constituted by one sheet. In the fourth to sixth embodiments, the upper and lower tightening nuts 69 are tightened with a sprig washer 77 interposed therebetween. As described above, various modifications according to the application location are possible.

The orientation of the flat plates 33 and 34 is
It is preferable that the vertical direction is set in the direction in which the relative displacement between the hull 32 and the boat 1 is large. Since the pin connection has a large displacement followability, the bolts 38 to 41 act as pins and can follow a large relative displacement with a large angular displacement.

[0023]

As described above, according to the present invention, the direction in which the marine vessel main body is connected to the hull and the vertical direction thereof are handled by sliding through the friction member, and the displacement in the vertical direction is determined. It can respond by bending displacement of the flat plate. Since the flat plate is kept at an interval by the connecting member at the intermediate portion, it is difficult to buckle and a large bending displacement is possible.

Further, according to the present invention, one end and the other end in the connecting direction are respectively pin-connected to the mounting member, so that the displacement followability is good and the large displacement can be followed.

Further, according to the present invention, since the flat plate is formed by laminating a plurality of thin plates, the tensile strength can be increased without increasing the bending rigidity. Further, even when the distance in the longitudinal direction is short, a thin plate can be easily bent and deformed, so that it can be deformed more easily than a single plate having the same thickness as the laminated plate.

According to the present invention, the axial direction of the pin is
Since the marine vessel is mounted so that the relative displacement between the marine engine and the hull is perpendicular to the large direction, the large displacement can be followed by the angular displacement around the pin.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention.

FIG. 2 is a plan view of the embodiment shown in FIG.

FIG. 3 is a schematic sectional view of the hull showing a state in which the marine stay device of the embodiment shown in FIG. 1 is used.

FIG. 4 is a sectional view of a second embodiment of the present invention.

FIG. 5 is a plan view of the embodiment shown in FIG.

FIG. 6 is a sectional view of a third embodiment of the present invention.

FIG. 7 is a plan view of the embodiment shown in FIG. 6;

FIG. 8 is a sectional view of a fourth embodiment of the present invention.

FIG. 9 is a plan view of the embodiment shown in FIG. 8;

FIG. 10 is a sectional view of a fifth embodiment of the present invention.

11 is a plan view of the embodiment shown in FIG.

FIG. 12 is a sectional view of a sixth embodiment of the present invention.

FIG. 13 is a plan view of the embodiment shown in FIG.

FIG. 14 is a side view of the seventh embodiment of the present invention.

FIG. 15 is a plan view of the embodiment shown in FIG. 14;

FIG. 16 is a plan view of a marine stay device according to a proposed technique.

FIG. 17 is a sectional view taken along the line AA of FIG. 16;

FIG. 18 is a plan view of a marine stay device according to another proposed technique.

FIG. 19 is a cross-sectional view taken along the line BB of FIG. 18;

[Explanation of symbols]

 31 marine main engine 32 hull 33,34 flat plate 35 bolt 36 spacer 37 connecting member 38-41 bolt 42,43 mounting member 46-49 friction plate 58,68 lock nut 59,69 tightening nut 71 top bracing 72 hull 73 ship bottom

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B63H 21/30 F16F 15/02

Claims (4)

(57) [Scope of request for utility model registration] 1. An anti-vibration stay device for a marine main engine for connecting a marine main engine and a hull while damping the vibration, wherein a pair of flat plates extending in a connecting direction between the marine main engine and the hull are pin-connected to the flat plate at one end in the connecting direction. A mounting member having a pin insertion hole larger than the diameter of the pin, a friction member interposed between the flat plate and the mounting member, and a connection for connecting the flat plates at an intermediate portion of the flat plates while maintaining a distance between the flat plates. An anti-vibration stay device for a marine marine engine, comprising a member. 2. An anti-vibration stay device for a marine main engine according to claim 1, wherein said flat plate includes a mounting member which is pin-connected at the other end in the connection direction. 3. The anti-vibration stay device for a marine main engine according to claim 1, wherein each of the flat plates is formed by laminating a plurality of thin plates. 4. The pin according to claim 1, wherein the pin is mounted such that an axial direction of the pin is perpendicular to a direction in which a relative displacement between the marine engine and the hull is large. The anti-vibration stay device of the marine main engine described in the above.