JPS62171627A - Fish preserve apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cage device with excellent stability, in which the main part of the cage frame is composed of a rigid pipe.

(Prior art) A cage device used to enclose the sea with a net and use it to cultivate, capture and house fish and shellfish inside the net has a frame that floats on the sea surface and suspends and supports the net. Some use high-rigidity iron materials together with floats. However, in order for a cage device using such a frame to withstand external forces such as waves, a frame with large bending rigidity is generally required, and as a result, the planar projected area of the cage device is reduced. However, there was a drawback that the efficiency of cultivating or capturing and transporting fish and shellfish was reduced.

Therefore, in order to eliminate such drawbacks, the applicant proposed the fifth
The device shown in the figure was proposed in Utility Model Publication No. 60-2769.

This cage device is constructed in a polygonal frame by connecting rod-shaped reinforcing elastic bodies 1 filled with gas with a tension reinforcing layer buried therein and interconnecting them with bending joints 2 provided with locking parts for mooring lines 4. It is constructed by forming a cage frame 3 and suspending a net 6 from this frame 3. Due to its excellent wave characteristics, this cage device can follow the wave front without being damaged even by relatively large waves in the open ocean, and the cage frame does not deform abnormally even when subjected to external force during towing. It has a certain degree of rigidity.

(Problems to be Solved by the Invention) By the way, when a cage device is in use, it involves operations such as feeding fish and shellfish into the device and observing their growth status. It is usually carried out on a cage frame.

However, in the above-mentioned cage device, the main part of the cage frame is made of a reinforcing elastic body, so although it can support the weight of the worker, it deforms significantly and makes it difficult to perform various tasks. In this work, for example, rigid joints made of steel pipes that are less affected by waves must be used as scaffolding, and there was a problem in that the location of the scaffolding was limited.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a cage device that is not easily shaken by waves and has excellent stability in which the position of the scaffolding is not limited.

(Structure of the Invention) To achieve this object, the cage device of the present invention includes a plurality of frame members made of rigid pipes and a joint made of a reinforcing elastic body that interconnects these frame members and forms a cage frame. It's getting better.

(Function) If an external force due to waves or the like acts on this cage device, the external force will not primarily be turned into a bending moment, but will act on the frame. This bending moment acts on the frame members made of rigid pipes that form the main part of the cage frame, but the bending moment that acts on each frame member is caused by the highly flexible reinforcing elastic bodies that connect them. Most of the load is absorbed by the joint, so that no excessive load is applied to the rigid pipe, and a cage device with a large planar projected area can be constructed. Furthermore, the frame members constituting the main part of the cage frame are less shaken by waves than in conventional devices, making it easier to work on the cage frame.

(Example) The cage apparatus of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing the cage apparatus of the present invention, in which reference numeral 11 denotes a frame member made of a rigid pipe, and 12 a joint that interconnects these frame members to form a cage frame 13. 16 indicates a net suspended from the cage frame 13.

As the frame member 11, it is preferable to use a steel pipe with excellent corrosion resistance and strength, considering the usage conditions, but it is also possible to use a plastic pipe material, which is lightweight and has excellent strength, for example. Further, the cross-sectional shape of the frame member 11 is preferably circular in terms of strength, but is not limited to this, and may be rectangular in consideration of workability on the cage frame. good. In such a case, since the cage frame itself serves as a scaffold, it is preferable to provide a non-slip surface or a protrusion for that purpose on the part that serves as a scaffold.

At both ends of the frame member 11, as shown in FIG.
A flange 17 is provided to facilitate connection with the joint 12. In addition, when the frame member has a cylindrical outer circumferential surface, a workbench 18 having a planar shape is separately provided in order to make various operations on the frame member easier, and furthermore, regardless of the external shape of the frame member, The fence 19 may be provided over almost the entire cage frame, or may be provided at an appropriate location as required.

Further, each frame member 11 includes a gas chamber 21 partitioned by partition walls 20 provided at least near both ends thereof.

The joint 12 that interconnects such frame members is made of an elastic body made of rubber or a rubber-like elastic material reinforced with organic or inorganic fibers, preferably cords thereof, and is made of an elastic body and its reinforcement. The number of layers and angles of the fiber cords are selected to meet the requirements of the joint, such as resistance to kinging and increased bending stiffness as bending displacement progresses. This makes it possible to maintain the overall shape of the cage frame 13 substantially constant while allowing some movement between the rod members.

The joint 12 is also provided with rigid flanges 23 on both ends thereof, which are bonded together by, for example, vulcanization, so that the joint 12 can be easily connected to the frame member 11 via these flanges 23.

In order to frame the cage frame 13 using such frame members and joints, the flanges 17 provided at each end of the frame member
to the rigid flange 2 of the joint 12 through a suitable sealing material.
3, it may be fastened using a fastening bolt (not shown). As a result, the cage frame 13 consists of frame members each having an independent gas chamber 21 and joints each having an independent space. However, the entire cage frame will not sink. This is very useful because even if a joint is accidentally damaged by a working vessel, only that joint can be easily replaced.

Further, in order to impart extra buoyancy to the frame member 11, a float made of styrene foam, for example, may be provided on the outer periphery of the frame member 11. In this case, it is preferable to cover the float with a fabric cover to protect the float from damage. .

In addition to the net for the original function, this cage frame also has a net for its original function.
Supports for the net to prevent fish and shellfish from jumping out, hooks for work such as assembling and transporting the cage frame, and hooks for the mooring ropes used to moor the cage frame will be installed.

Next, another embodiment of the apparatus of the present invention will be shown using FIGS. 3 and 4.

In the embodiment shown in FIG. 3, at the corner of the cage frame 13,
A bent integral rigid pipe is used as the frame member, and the other parts of the cage frame are straight frame members similar to the embodiment shown in Fig. 1, so that the cage frame has a rectangular plane. was formed.

A cage frame with a rectangular plane as shown in Figures 1 and 3 allows multiple cage frames to be placed adjacent to each other on the water surface without any gaps, making it easier to feed the fish and shellfish in the cage device. Work can be done simultaneously, improving work efficiency.

In the embodiment shown in FIG. 4, the flanges attached to both ends of the frame member are arranged such that the plane including the flanges is not perpendicular to the axis of the frame member, and is shaped like a polygon, in this embodiment,
It has a rectangular cage frame. According to this embodiment, the shape can be adapted to the migratory movement of fish and shellfish, so that a cage frame having a shape suitable for the growth of fish and shellfish can be obtained.

In any of the embodiments described above, it is preferable to attach a flat workbench 18 made of a steel plate, a wooden plate, or a lattice plate thereof to the outer peripheral surface of the frame member having a cylindrical outer surface. In addition, anti-slip devices shall be provided on the workbench as necessary. Note that a frame member having a rectangular cross section may be provided with a non-slip member directly in the working area on its outer periphery.

(Effects of the Invention) Therefore, according to the present invention, the frame members constituting the main part of the cage frame are made of rigid pipes, and these frame members are interconnected with flexible joints. To obtain a stable cage device in which the shaking of the rod member itself is small and the shaking caused by acting waves can be absorbed by a flexible joint. Therefore, various operations on the cage frame become easier.

Furthermore, since the external force acting on the cage frame can be absorbed by the joint, problems that occur when the entire cage frame is made of rigid pipes do not occur.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the cage device of the present invention, FIG. 2 is an explanatory diagram showing an enlarged part of the device shown in FIG. 1, and FIGS. 3 and 4 are: FIG. 5 is a perspective view showing a conventional cage device.

Claims (1)

[Claims] 1. A cage device comprising a plurality of frame members made of rigid pipes and a joint made of a reinforcing elastic body that interconnects these frame members to form a cage frame.