JP4784284B2 - Sonar dome mounting structure - Google Patents

Description

  The present invention has been devised by paying attention to the conventional problems relating to the sonar dome mounting structure, and relates to a sonar dome mounting structure that improves the mounting workability and molding workability of the sonar dome body.

  Conventionally, the sonar dome that protects the transducers (acoustic sensors, etc.) installed on observation ships has been known to be installed at the bottom of the ship or at the bow to improve acoustic performance. In order to reduce the influence of noise and vibration from own ship and underwater noise generated from other equipment, a structure that is attached to the bow side has become the mainstream (see, for example, Patent Document 1).

  As a conventional sonar dome mounting structure, for example, as shown in FIGS. 4 and 5, the transducer 3 is accommodated in the cavity 2 at the lower part of the bow of the hull 1, and the transducer 3 and the cavity 2 are accommodated. The sonar dome body 4 is airtightly attached so as to cover.

  The sonar dome body 4 can be attached to the hull 1 by attaching a fiber reinforced plastic (FRP) composite dome to the hull by tightening it with a fastening member such as a bolt, or a rubber sonar dome. When attaching a main body, the method of attaching by a bead is known. For example, as shown in FIGS. 6 to 8, the structure for attaching the rubber sonar dome main body fits the bead portion 6 of the sonar dome main body 4 into the concave portion of the bead seat 5 attached to the hull 1 side, It is tightened via the bead clamp fitting 7 and the fastening bolt 8. Further, as shown in FIG. 8, the sonar dome body 4 and the hull 1 are attached so as to be connected and covered by a fairing plate 9 via a sealing material or the like.

  However, in the case of the structure in which the bead portion 6 of the sonar dome main body 4 is attached via the bead sheet 5, the bead clamp fitting 7 and the bolt 8, the size does not match the hull 1 side when attached to the hull 1 side. In that case, there is almost no dimensional absorption allowance, so fine adjustment is not possible, and the sonar dome main body 4 is a large structure, and when the sonar dome main body 4 is manufactured as an integral molding as a fiber reinforced plastic structure, There are various problems with the conventional structure such that it is difficult to redo, and it takes a lot of cost and labor to redo, and it is also difficult to manufacture the hull mounting part by integral molding.

That is, when the entire sonar dome body including the hull mounting part is integrally molded, the molding risk is large as described above, and it is difficult to mold the hull mounting part with the sonar dome body. The mounting dimensional accuracy becomes a problem, and particularly when a fiber reinforced plastic bead structure is applied, there is almost no dimensional error absorption margin. Further, the hull mounting portion is a portion to which the load is most applied at the time of operation, and the strength may be reduced due to fatigue or the like, and is also a portion that is easily damaged.
JP-A-8-327726

  The present invention has been devised by paying attention to such conventional problems, and can be easily adjusted at the time of mounting the sonar dome body, and can be easily integrally molded, sonar dome body. It is an object of the present invention to provide a sonar dome mounting structure capable of improving the mounting workability and the molding workability.

In order to achieve the above object, the present invention divides a sonar dome main body, a bead sheet, and a bead clamp metal fitting integrally formed of fiber reinforced plastic, and the sonar dome main body, the bead sheet, and the bead clamp metal fitting, The gist is that they are connected via a metal sonar dome mounting member constituting the joining means .

Here, at the tip of the sonar dome mounting member, a bead portion having a spherical cross section that fits into a spherical recess formed in the bead sheet and the bead clamp fitting is integrally formed, and a base of the sonar dome mounting member is formed. The end portion is connected to the terminal portion of the sonar dome main body via a bolt. Further, the sonar dome mounting member may be formed of a plate-like member, and both ends of the plate-shaped sonar dome mounting member may be connected to the terminal portion of the sonar dome main body and the bead sheet via fastening bolts. . It is also possible to form a slot whose length can be adjusted so that the bolt can be inserted into at least one of the terminal portion of the sonar dome main body or the base end portion of the sonar dome mounting member.
The joining means may be constituted by a fastening joint structure or an adhesive joint structure, and the sonar dome mounting portion on the hull side may be divided at a predetermined interval.

  By configuring in this way, adjustment at the time of mounting the sonar dome body can be easily performed, and integral molding can be easily performed, and the mounting workability and molding workability of the sonar dome body can be improved. Is something you can do.

This invention is configured by dividing the sonar dome main body, the bead sheet, and the bead clamp metal fitting integrally formed of fiber reinforced plastic as described above, and the sonar dome main body, the bead sheet, and the bead clamp metal fitting, Since it is configured to be connected via a metal sonar dome mounting member that constitutes the joining means , the following excellent effects are exhibited.
(a) By dividing the sonar dome mounting part and the sonar dome main body into separate parts, the molded product can be selected and applied arbitrarily.
(b) The misalignment of the connection part between the bead structure and the sonar dome body can be easily absorbed by the lapping allowance, and the processing and assembly at the site can be easily performed.
(c) The mounting part is easy to manufacture and the mounting accuracy is high.
(d). Even if a part of the sonar dome mounting part on the hull side and the sonar dome main body are damaged, it is only necessary to replace a part of the sonar dome main body without replacing the whole, so that the cost can be reduced.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. Note that the same components as those in the conventional example are denoted by the same reference numerals and description thereof is omitted.

  FIG. 1 is a cross-sectional view of a sonar dome mounting structure showing a first embodiment of the present invention, wherein 1 is a hull on the bow side, 2 is a cavity at the lower part on the bow side, 4 is a sonar dome body, and 5 is a bead seat. , 7 indicates a bead clamp fitting, and 8 indicates a fastening bolt. In the first embodiment of the present invention, the sonar dome main body 4, the bead seat 5 and the bead clamp metal fitting 7 are divided and configured. The bead sheet 5 and the bead clamp fitting 7 are connected to each other through a metal sonar dome mounting member 10a constituting the joining means 10.

  The tip of the sonar dome mounting member 10a is integrally formed with a spherical bead portion 11 having a spherical section that fits into the spherical recesses 5a, 7a formed in the bead sheet 5 and the bead clamp fitting 7. The base end portion of the dome mounting member 10 a is connected to the terminal portion of the sonar dome main body 4 via the bolt 12.

  In the terminal portion of the sonar dome body 4, a length-adjustable long hole 13 through which the bolt 12 is inserted is formed so that the length of the joining means 10 can be easily adjusted. The length-adjustable long hole 13 can also be formed at the proximal end of the sonar dome mounting member 10a.

  FIG. 2 is a cross-sectional view showing a second embodiment of the sonar dome mounting structure. In this embodiment, the sonar dome mounting member 10a of the first embodiment is formed without a bead portion 11 having a spherical cross section. The sonar dome mounting member 10a has a terminal portion directly connected via a fastening bolt 12a.

  Since other configurations and operations are the same as those in the first embodiment, the same reference numerals are given and description thereof is omitted.

  Further, FIG. 3 is a perspective view showing a third embodiment of the sonar dome mounting structure. In this embodiment, the sonar dome mounting member 10a having the bead portion 11 of the first embodiment is divided in the width direction. The bead portion 11 of the divided sonar dome mounting member 10a is fitted into spherical recesses 5a and 7a formed in the bead seat 5 and the bead clamp metal fitting 7 and fastened and fixed through bolts 12. It is.

  Since other configurations and operations are the same as those in the first embodiment, the same reference numerals are given and description thereof is omitted.

As described above, the sonar dome mounting member 10a and the sonar dome body 4 of the hull 1 side constituted by dividing, hermetically through the sonar dome mounting member 10 a and the sonar dome body 4 and the joining means 10 Therefore, the adjustment at the time of mounting the sonar dome body 4 can be easily performed, and the integral molding can be easily performed to improve the mounting workability and the molding workability of the sonar dome body 4. Is something you can do.

It is sectional drawing of the attachment structure of the sonar dome which shows 1st Embodiment of this invention. It is sectional drawing of the attachment structure of the sonar dome which shows 2nd Embodiment of this invention. It is sectional drawing of the attachment structure of the sonar dome which shows 3rd Embodiment of this invention. It is explanatory drawing of the observation ship which attached the conventional sonar dome. It is a perspective view of the conventional sonar dome main body. It is a partially expanded sectional view of the X section of FIG. It is a partial expansion perspective view of the connection part of the conventional sonar dome main body. It is a perspective view which shows the attaching part of the conventional fairing plate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hull 2 Cavity part 3 Transmitter / receiver 4 Sonar dome main body 5 Bead sheet | seat 5a Concave part 6 Bead part 7 Bead clamp metal fitting 7a Concave part 8 Fastening bolt 9 Fairing plate 10 Joining means 10a Sonar dome attachment member 11 Bead part 12 Bolt 13 Long hole

Claims (6)

In a sonar dome mounting structure in which a transmitter / receiver is accommodated in a hollow portion on the bow side of a hull, and a sonar dome body is hermetically mounted so as to cover the transmitter / receiver and the hollow portion,
A sonar dome body integrally formed with the fiber reinforced plastic , a bead sheet, and a bead clamp metal fitting are divided and configured, and the sonar dome main body, the bead sheet, and the bead clamp metal fitting are made of metal that constitutes a joining means. A sonar dome mounting structure characterized in that the sonar dome mounting member is connected via a sonar dome mounting member . At the tip of the sonar dome mounting member, a bead portion having a spherical section that fits into a spherical recess formed in the bead sheet and the bead clamp fitting is integrally formed, and the base end portion of the sonar dome mounting member is The sonar dome mounting structure according to claim 1, wherein the sonar dome main body is connected to a terminal portion of the sonar dome body via a bolt . The sonar dome mounting member is formed of a plate-shaped member, and both ends of the plate-shaped sonar dome mounting member are connected to a terminal portion of the sonar dome main body and a bead sheet via fastening bolts. Dome mounting structure. The attachment of the sonar dome according to claim 1, 2 or 3 , wherein an elongated hole through which a bolt can be inserted is formed in at least one of a terminal portion of the sonar dome main body or a base end portion of the sonar dome attachment member. Construction. The sonar dome mounting structure according to claim 1, 2, 3, or 4 , wherein the joining means comprises a fastening joint structure or an adhesive joint structure. The sonar dome mounting structure according to claim 1, 2 , 3 , 4, or 5 , wherein the sonar dome mounting portion on the hull side is divided at a predetermined interval.

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