JP5375566B2 - Rectification cover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a straightening cover which covers the opening part of a recess when the recess is demarcated and formed in the side wall of a structure used on or in water for installing a device therein and which has increased durability. <P>SOLUTION: A connection bracket 8 embedded in a rubber sheet 3 by vulcanization and adhesion and a pressing bracket 9 set so as to ride on an intermediate beam 5B are fixed to the intermediate beam 5B extending in the direction in which the intermediate beam 5B crosses the reinforcing fibers by connecting these brackets with fixing bolts 10, 10. A cushion layer 11 is provided between the connection bracket 8 embedded in the rubber sheet 3 and the reinforced layer 7. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a rectifying cover, and more particularly to a rectifying cover having improved durability.

  Conventionally, when a device is installed by forming a recess on the side wall of a structure used on or under water, for example, when a pressure chamber is formed on an observation ship or a ship and equipped with a sonar, the recess By covering the opening with a rectifying cover, the hydraulic resistance is reduced while maintaining the pressure difference between the inside and the outside. As such a rectifying cover, for example, Patent Document 1 discloses a rubber rectifying cover formed by tensioning and fixing a rubber sheet in which a reinforcing layer is embedded in a metal frame that is detachably attached to a peripheral portion of a pressure chamber. Has proposed.

  In this rectifying cover, the rubber sheet is mechanically fixed to the frame frame (intermediate beam), and therefore, as shown in FIG. 5, the holding metal fitting 21 straddling the intermediate beam 20 is fixed via the fixing bolt 22. A metal connection fitting 23 is embedded in the rubber sheet 24 by vulcanization adhesion. However, since the connection fitting 23 has a low adhesive force with the reinforcing layer 25, a shearing force is generated in the connection fitting 23 due to a tensile force repeatedly applied in the inner and outer directions of the rubber sheet 24, and the connection fitting 23 is peeled off from the rubber sheet 24. There is a risk that. When the connection fitting 23 is peeled off, the rubber sheet 24 is detached from the frame, so that the pressure difference inside and outside the pressure chamber becomes large, adversely affects the performance of the device, and the hydraulic resistance of the structure increases.

Registered Utility Model No. 2504042

  An object of the present invention is to provide a rectifying covering having improved durability.

  The rectifying cover of the present invention that achieves the above object is provided in an outer frame that abuts on the peripheral edge of the opening of a recess formed on the side wall of a structure part that is used on or in water, and is arranged in a lattice pattern in the outer frame. A rubber sheet in which a reinforcing layer in which reinforcing fibers are aligned is embedded in a frame made up of intermediate beams is fixed by connecting a connection fitting embedded in the rubber sheet and a holding fitting straddling the intermediate beam. In the rectifying cover, a cushion layer having a predetermined thickness is provided between the connection fitting and the reinforcing layer.

  According to the rectifying cover of the present invention, since the cushion layer is provided between the connection fitting embedded in the rubber sheet and the reinforcing layer of the rubber sheet in order to fix to the intermediate beam of the frame, the shear force applied to the connection fitting Since the connection fitting is not peeled from the rubber sheet, the durability of the rectifying cover can be improved.

It is a perspective view of the outer surface side of the rectification | straightening cover which consists of embodiment of this invention. It is a perspective view of the inner surface side of the rectification | straightening cover which consists of embodiment of this invention. It is assembly sectional drawing which shows the fixing method to the intermediate beam of a rubber sheet. FIG. 3 is an enlarged view of a portion X shown in FIG. 2. It is assembly sectional drawing which shows the fixing method to the intermediate beam of the rubber sheet in the conventional rectifying cover.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 and 2 show a rectifying cover according to an embodiment of the present invention.

  This rectifying cover 1 is tensioned so as to cover the frame 2 and a metal frame 2 that is detachably attached to the opening of the recess formed on the side wall of the structure used on or under water. The rubber sheet 3 is attached. The metal frame 2 is composed of outer frames 4A and 4B that are in contact with the peripheral edge of the opening of the recess, and a plurality of intermediate beams 5A and 5B arranged in a lattice pattern in the outer frames 4A and 4B. The outer frames 4A and 4B and the intermediate beams 5A and 5B have the same outer curvature as the outer surface shape including the concave portion of the structure.

  The rubber sheet 3 is a sheet-like rubber body such as chloroprene rubber in which a reinforcing layer 7 formed by aligning reinforcing fibers 6 made of rubberized metal wires or organic fibers is embedded. The rubber sheet 3 is set on the frame body 2 so that the reinforcing fibers 6 are parallel to the longitudinal direction of the frame body 2 (X direction shown in FIGS. 1 and 2), and is fixed in a state of being pulled in the longitudinal direction. .

  In such a rectifying cover 1, as shown in FIG. 3, the rubber sheet 3 is a connection embedded in the rubber sheet 3 by vulcanization adhesion in an intermediate beam 5B extending in the direction intersecting the reinforcing fibers 6 (Y direction). The metal fitting 8 and the holding metal fitting 9 set so as to straddle the intermediate beam 5B are fixed by connecting with fixing bolts 10 and 10. A cushion layer 11 is provided between the connection fitting 8 embedded in the rubber sheet 3 and the reinforcing layer 7. The cushion layer 11 is preferably the same as the rubber composition forming the rubber sheet 3 from the viewpoint of facilitating the manufacture of the flow rectifying cover 1, but other types of rubber compositions can also be used.

  By providing the cushion layer 11 between the connection fitting 8 and the reinforcing layer 7 in this way, the shearing force applied to the connection fitting 8 can be relaxed, so that the connection fitting 8 does not peel from the rubber sheet 3. Therefore, the durability of the rectifying cover 1 can be improved.

  The thickness h of the cushion layer 11 is preferably 5 to 20% of the width W of the joint surface between the intermediate beam 5B and the connection fitting 8. When the thickness h of the cushion layer 11 is out of this range, the shearing force becomes large, and the embedding of the connection fitting 8 becomes shallow, so that the cushion layer 11 is easily dropped.

  In the above embodiment, it is desirable to fix the intermediate beam 5B extending in the Y direction and the outer frame 4A extending in the X direction of the rectifying cover 1 so that the position of the intermediate beam 5B in the X direction can be adjusted. By doing in this way, since the shear force added to the connection metal fitting 8 can be relieved by adjustment of the position of the intermediate beam 5B, the durability of the rectifying cover 1 can be improved.

  As a method of fixing the intermediate beam 5B and the outer frame 4A, as shown in FIG. 4, a long hole 12 extending in the X direction is formed in the intermediate beam 5B and screwed into the screw hole 13 of the outer frame 4A. 14 illustrates the method of fixing.

  The rectifying cover of the present invention is suitably used as a rectifying cover for a pressure chamber in which a sonar is installed in an observation ship or a ship.

DESCRIPTION OF SYMBOLS 1 Current cover 2 Frame 3 Rubber sheet 4A (X direction) Outer frame 4B (Y direction) Outer frame 5A (X direction) Intermediate beam 5B (Y direction) Intermediate beam 6 Reinforcing fiber 7 Reinforcing layer 8 Connection fitting 9 Retaining Bracket 10 Fixing Bolt 11 Cushion Layer 12 Long Hole 13 Screw Hole 14 Bolt

Claims (4)

Reinforcing fibers are applied to a frame body composed of an outer frame that comes into contact with the peripheral edge of an opening of a recess formed on the side wall of a structure portion used on or in water, and an intermediate beam disposed in a lattice shape in the outer frame. In the rectifying cover fixed by connecting the connecting metal fitting embedded in the rubber sheet and the holding metal fitting straddling the intermediate beam, the rubber sheet in which the aligned reinforcing layer is embedded,
A rectifying cover provided with a cushion layer having a predetermined thickness between the connection fitting and the reinforcing layer.   The rectifying cover according to claim 1, wherein a thickness h of the cushion layer is 5 to 20% of a width W of a joint surface between the intermediate beam and the connection fitting.   The rectifying cover according to claim 1 or 2, wherein an intermediate beam that intersects with the reinforcing fiber and the outer frame of the intermediate beam and the outer frame are fixed so that the position in the orthogonal direction of the intermediate beam can be adjusted.   The rectifying cover according to claim 1, wherein the reinforcing fiber is a rubberized metal wire or organic fiber.

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