JPS6174530A - Artificial fish bank - 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] Industrial applications This invention relates to artificial reefs.

Conventional Technology Conventionally, in the coastal fishing industry, artificial reefs made of concrete are sunk to the sea floor to breed seaweed and plankton, thereby increasing the fish catch without attracting fish.

Problems to be Solved by the Invention However, concrete fish reefs have drawbacks such as being heavy and requiring time and effort to transport to a predetermined location on the seabed and being expensive to manufacture.

Means for Solving the Problems In order to solve these problems, the present invention provides long bolts protruding from the upper surface of the four corners of a hollow rectangular concrete paste, and utilizes the four sets of long bolts to △An artificial fish reef is created by framing any number of layers.It is lightweight, making it easy to work with, and since it makes effective use of thinned wood, the production cost is low, and since it is made of wood, it can be used to remove seaweed on the seabed. It is characterized by good growth of fish, and the size of the fish entry hole can be freely adjusted.

Hereinafter, the present invention will be explained in detail with reference to embodiment figures.

1 Protruding ridges 3 are provided on the upper surface of the four corners of a rectangular concrete base 2 with a hole 1 that communicates vertically in the center, and a long bolt 4 is provided protruding from the center of each ridge 3, An artificial reef 7 is constructed by connecting bolts 4 with an arbitrary number of layers of wood 5 and securing them with nuts 6. In addition,
To assemble the wood 5, first 1 for the concrete base 2.
Two pieces of wood 5a are placed facing each other in the front and back, but both ends are connected to the long bolts 4, and then two pieces of wood 5b are placed facing each other.
are arranged vertically and stacked in arbitrary number of stages while passing through the long bolts 4 in a square shape at the upper and lower stages, and at the top stage, pass the holding wood 5C through the long bolts 4 and attach nuts 6 to each long bolt 4. The first tightened
Artificial fish reef 7a of embodiment example and coated IJ-to base 2
Two pieces of wood 5b are placed vertically against each other, facing each other in the front and back, or facing each other on both sides, and are connected to the long bolt 4. Next, three pieces of wood 5d are placed vertically and the upper and lower layers form an I-shape. The artificial structure of the second embodiment is stacked in any number of stages while passing through the long bolts 4 in a manner similar to the above, and at the top stage, the holding wood 5C is passed through the long bolts 4 and a nut 6 is tightened on each long bolt 4. Fish reef 7b is considered.

action, effect Next, the effects of the present invention will be explained with reference to embodiment figures.

The artificial reef 7 according to the present invention is constructed by assembling wood 5 in a well shape on the upper surface of a concrete base 2 to assemble a rectangular fish reef with a height of about 2 m. Since it uses wood, it is light in weight, and it does not require time and effort to transport it to a predetermined location on the seabed, sink it, etc., and can improve workability and safety. Moreover, the production cost is low because wood can be effectively used from thinned wood, and when it is sunk to the seabed, seaweed and plackton grow better on wood than on concrete, making it a favorite attraction for fish. Ru. As the method of assembling the timbers 5, there is a first embodiment based on two pieces of wood, and a second embodiment based on three pieces of wood. 2 acts as a weight, it has good stability on the seabed, and it has the remarkable effects mentioned above, such as making it possible to effectively utilize thinned wood that would otherwise have been disposed of.

[Brief explanation of drawings]

FIG. 1 is a front view of an artificial reef according to a first embodiment of the present invention;
FIG. 2 is a right side view thereof, FIG. 3 is a plan view thereof, FIG. 4 is a bottom view thereof, FIG. 5 is a sectional view taken along line A-A in FIG. FIG. 7 is a front view of the fish reef, FIG. 7 is a right side view thereof, and FIG. 8 is a sectional view taken along the line B--B in FIG. 6. 1 hole, 2 concrete base, 3 ridges, 4 long bolts, 5 wood, 6 nuts

Claims (1)

[Scope of Claims] 1. A rectangular concrete base with a hollow center, protrusions are provided on the upper surface of the four corners, long bolts are protruded from the base, and wood is assembled to each of the long bolts. , artificial reef. 2 Place one piece of wood on the long bolts of the concrete base, either front and back, or facing each other, to connect them, then place two pieces of wood vertically and connect the long bolts in a square shape in the upper and lower stages. The artificial reef according to claim 1, characterized in that the artificial reef is assembled while 3 Place two pieces of wood vertically around the long bolts of the concrete base and place them front and back, facing each other, or on both sides to connect them. Next, place three pieces of wood vertically and make a long I-shape in the upper and lower rows. The artificial reef according to claim 1, wherein the artificial reef is assembled while being connected to a bolt.