JP2012161277A - Fish bank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fish bank capable of diversifying the growing environment for undersea life, and capable of being relatively easily constructed.SOLUTION: A rectangular steel plate is subjected to a pressing process or cutting process to be used for another purpose, and metal plates in a prescribed shape are taken out. A prescribed number of waste steel plates after this process are layered on one another with prescribed intervals retained in-between to composed the fish bank. The fish bank is characterized by fitting end edges of the waste steel plates into slits of a frame body so that the waste plates are layered on one another at regular intervals. Further, auxiliary plates are disposed in the peripheral edges of each waste steel plate to form flanges, and legs are disposed in the flanges to compose a fish-bank composing body. The fish bank is also characterized by the fish-bank composing bodies which are layered on one another while retaining intervals between the waste steel plates by the legs by connecting a plurality of the fish-bank composing bodies.

Description

  The present invention relates to a fishing reef that sinks into the sea and serves as a place for growth of marine organisms.

  Conventionally, as artificially formed fishing reefs (hereinafter simply referred to as “fishing reefs”), those using metal materials as materials are known.

  As an example of such a fishing reef, there is one in which metal steel pipes are alternately stacked in a square shape to form a fish swimming space in the peripheral side surface and the vertical direction so as to function as a fishing reef (for example, Patent Documents) 1).

  This is advantageous in that the algae are likely to adhere to the surface of the reef and improve the fish collection effect, although there is metal corrosion compared to the conventional laminated concrete blocks with porous formation.

  On the other hand, fishing reefs composed of concrete blocks have the disadvantage that the cement material leaches out on the surface and inhibits the growth of seaweeds and algae, and the effect of collecting fish decreases with time.

  Moreover, what constitutes a fishing reef with the waste of various materials including a metal is known as an example of another fishing reef (refer patent document 2). In the case of the fishing reef described in Patent Document 2, metal waste is crushed and shredded, mixed with a binder and molded and hardened into a fixed shape. However, it was intended to improve the reproductive efficiency, and basically used the technical features of the metal-based fishing reef similar to the fishing reef described in Patent Document 1 mentioned above.

Japanese Patent Laid-Open No. 08-140522 Japanese Patent Application Laid-Open No. 08-13016

  However, in the metal-based fishing reefs described in these prior documents, the work for forming a certain fixed shape with a metal member is complicated, and since the shape of the fishing reef is typically fixed, the environment of the fishing reef is changed. In addition, there is a disadvantage that the shredded metal pieces are hardened with a binder to be in an arbitrary shape, and the work for constructing the solidified metal pieces into the shape of a reef is necessary again and is complicated. There is sex.

  The present invention has been made in view of such circumstances, and provides a fishing reef that can bring diversity to the growth environment of marine organisms and can be constructed relatively easily.

  In order to solve the above-described conventional problems, in the present invention according to claim 1, in a fishing reef, a rectangular steel plate is subjected to press processing or fusing processing to be used for other purposes, and a metal plate having a predetermined shape is extracted, Subsequent waste steel plates were configured to overlap each other while maintaining a predetermined number of intervals.

  Further, the present invention according to claim 2 is characterized in that, in the fishing reef according to claim 1, the edge of the waste steel plate is inserted into the slit of the frame body so that the waste steel plates overlap each other at a constant interval.

  Further, in the present invention according to claim 3, in the fishing reef according to claim 2, the frame has a fixed slit for inserting and fixing the edge of the scrap steel plate into the edge plate corresponding to one side of the L-shaped steel. It is characterized in that it is formed in parallel while maintaining an interval.

  According to a fourth aspect of the present invention, in the fishing reef according to the first aspect, an auxiliary plate is disposed on the periphery of the waste steel plate to form a flange portion, and a leg portion is disposed on the flange portion. The reef structure body is configured, and a plurality of the reef structure bodies are connected to each other so that the legs overlap each other while maintaining the interval of the waste steel plates.

  According to the first aspect of the present invention, a rectangular steel plate is subjected to press processing or fusing processing to be used for other purposes, and a predetermined predetermined shape of the metal plate is extracted, and then a predetermined number of scrap steel plates are provided at a constant interval. Since they are held and overlapped with each other, it is possible to provide a reef that can bring diversity to the growth environment of marine organisms and can be constructed relatively easily.

  Further, according to the present invention of claim 2, since the edge of the waste steel plate is inserted into the slit of the frame body so that the waste steel plates overlap each other at regular intervals, the waste steel plate is placed at a predetermined position where the slit is formed. It can be easily arranged.

  According to the third aspect of the present invention, the frame body has parallel slits for holding the end edges of the scrap steel plate fitted and fixed to the edge plate corresponding to one side of the L-shaped steel, keeping a constant interval. Therefore, the interval between the waste steel plates can be reliably maintained while having a relatively easy configuration.

  According to the present invention of claim 4, an auxiliary plate is disposed on the periphery of the waste steel plate to form a flange portion, and a leg portion is disposed on the flange portion to constitute a fishing reef structure. By connecting a plurality of the reef components, the leg portions are configured to overlap each other while maintaining the interval between the waste steel plates, so that the interval between the waste steel plates can be reliably ensured while being a relatively easy configuration. Can be held.

It is explanatory drawing which shows the reef frame used for the reef of this invention, and the waste material steel plate with which it attaches to a reef frame. It is explanatory drawing which shows the structure of a fishing reef frame. It is the end surface explanatory drawing and partial enlarged view of a fishing reef frame which attached the waste material steel plate. It is explanatory drawing which shows the latching method of the edge part of the waste material steel plate inserted in the reef frame. It is explanatory drawing which showed the whole structure of the fishing reef which concerns on other embodiment. It is explanatory drawing which showed the processing method of a waste-material steel plate. It is explanatory drawing which showed the structure of the fish reef structure. It is explanatory drawing which showed the structure of the fish reef structure. It is explanatory drawing which showed the connection state of the fish reef structure. It is explanatory drawing which showed the fishing reef arrange | positioned on the seabed. It is explanatory drawing which showed the state of the fishing reef in the seabed.

  Embodiments of the present invention will be described below with reference to the drawings. 1 is an explanatory view showing a reef frame A used for the reef M of the present invention and a waste steel plate a attached to the reef frame A, FIG. 2 is an explanatory view showing a configuration of the reef frame A, and FIG. FIG. 4 is an explanatory diagram showing an end face explanatory view and a partially enlarged view of the fishing reef frame A to which the waste steel plate a is mounted, and FIG. 4 is an explanatory view showing a method for locking the end of the waste steel plate a inserted into the fishing reef frame A.

  As shown in FIG. 1, a fishing reef M of the present invention includes a fishing reef frame A in which a steel material 1 having an L-shaped cross section is assembled in a cubic frame shape, and a plurality of sheets are superimposed on the reef frame A while maintaining a predetermined interval in the vertical direction. The waste material steel plate a is constituted.

  The fishing reef frame A uses twelve pieces of steel material 1 (steel material 1-1 to steel material 1-12) for each fishing reef M.

  Specifically, as shown in FIG. 2, four steel materials 1-1, 1-2, 1-3, and 1-4 form a rectangular side frame of a cubic shaped reef M, and Steel materials 1-5, 1-6, 1-7, 1-8 and steel materials 1-9, 1-10, 1- 1 which are substantially square sides on the front opening 3 and the rear opening 4 of the side frame By assembling 11, 1-12, the reef frame A in which the twelve steel members 1 form a square box-shaped ridgeline is completed. In addition, in FIG. 2, in order to make an understanding of the connection state of each steel material 1 easy, it has shown with the dashed-two dotted line in the state which saw through the steel materials 1-8.

  That is, the four steel materials 1-1, 1-2, 1-3, and 1-4 having L-shaped cross sections forming the side frames are arranged at four corners of a substantially square shape with the L-shaped portions facing each other. Of the four L-shaped steel materials 1-5, 1-6, 1-7, 1-8 forming the front opening 3, the upper steel material 1-5 has one side of the L-shaped portion. The steel material 1-1, 1-2 arranged on the left and right sides of the steel material in the side frame is overlapped with one side of the L-shaped part, and the lower steel material 1-6 is formed of the L-shaped part. One side overlaps with one side of the L-shaped portions of the steel materials 1-3 and 1-4 arranged on the left and right sides of the steel frame in the side frame.

  Moreover, the steel material 1-7 arrange | positioned on the left side from the viewpoint which faces the rear opening part 4 from the front opening part 3 is the steel material 1-1 arrange | positioned up and down on the left side in the steel material in one side of an L-shaped part. , 1-3 are overlapped with one side of the L-shaped part, and the steel material 1-8 arranged on the right side has one side of the L-shaped part arranged vertically on the right side in the steel material in the side frame. The steel materials 1-2 and 1-4 are overlapped with one side of the L-shaped portion.

  Similarly, the steel materials 1-1, 1-2 constituting the side frames are also formed on the four steel materials 1-9, 1-10, 1-11, and 1-12 having an L-shaped cross section that form the rear opening. , 1-3, 1-4 are overlapped with one side of the L-shape. Each of these steel materials 1 is fixed in a connected state such as a connecting member such as a bolt or welding.

  By forming in this way, the fishing reef frame A which is the main skeleton of the fishing reef M is constructed.

  Moreover, the steel materials 1-5, 1-6 and the steel materials 1-9, 1-10 on the upper and lower sides respectively disposed in the front opening 3 and the rear opening 4 of the fishing reef M have steel material edges at regular intervals. A large number of slits 2 formed by notching are provided.

  The slits 2 are located at positions facing each other in the upper and lower steel materials 1-5 and 1-6 and the steel materials 1-9 and 1-10, and the width of the slit is at least slightly larger than the thickness of the waste steel plate a described later. Forming. In the present embodiment, the depth J of the slit 2 is about 5 cm.

  Next, the waste steel plate a that is fitted to the reef frame A and fitted into the slit 2 of the reef frame A will be described.

  As shown in FIG. 1, the waste steel plate a has a vertical length that is at least smaller than the vertical height of the front opening 3 and the rear opening 4 of the reef frame A, and the horizontal length is the reef frame. The length is at least larger than the length of A front and rear.

  Moreover, the waste steel plate a is a waste material having a hole after the metal plate is removed (hereinafter referred to as a “hole 9”). That is, although the original state is a rectangular steel plate, the steel plate in which many punched holes 9 of various shapes are formed by pressing (punching) or fusing is removed. It is supposed to be used as a.

  The thickness of the waste steel plate a is a thickness that allows punching in the state of the rectangular steel plate before punching. In particular, the waste steel plate a in the present embodiment has a thickness of about 3 to 10 mm.

  The shape of the punched hole 9 formed in the scrap steel plate a is not particularly limited. Therefore, even for waste materials that have been subjected to press processing (punching) or fusing processing in different shapes for different purposes, they can be used as the waste steel plate a. By using the waste material steel plate a provided with such a hole 9, it is possible to bring diversity to the growth environment of marine organisms settled on the fishing reef M. More preferably, the adjacent scrap steel plates a have different shapes of the punched holes 9. Thereby, diversity can be further given to a growth environment.

  By the way, a plurality of the waste steel plates a are inserted and disposed in the reef frame A, but it is also possible to select the fish to be collected by aligning the size of the punched holes 9 of the respective waste steel plates a to some extent. .

  That is, if the reef M is formed for the purpose of raising fry, the size of the punched hole 9 of the waste steel plate a to be inserted into the reef frame A should be adjusted so that fry can pass and adults cannot pass. Thus, the fry can be protected from predation by adult fish, and the reef M can be used mainly for collecting fry.

  Then, when forming the reef M, the waste steel plate a is inserted into the reef frame A from the front opening 3 toward the rear opening 4 as shown in FIG.

  At this time, the waste steel plate a is inserted into the reef frame A by inserting the edge into the slits 2 formed in the steel materials 1-5, 1-6, 1-9, 1-10 and facing each other. Are disposed in a state of being superposed on each other at regular intervals (see FIG. 3). Thus, since the waste steel plate a is inserted along the slit 2, the waste steel plate a can be easily disposed at a predetermined position at a predetermined position. In addition, since the slits 2 for inserting and fixing the edge of the waste steel plate a are arranged in parallel while maintaining a constant interval, the interval between the waste steel plates a is reliably maintained while having a relatively easy configuration. be able to. In addition, FIG. 3 has shown the fishing reef M seen from the front opening part 3 side.

  Moreover, as shown in the AA sectional view, the formation interval of the plurality of slits 2 formed in each steel material 1-5, 1-6, 1-9, 1-10 is a constant interval between the waste steel plates a. It is set as the interval which keeps K. The length of the interval K can be appropriately adjusted according to the fish to be collected, and can be set to, for example, 5 cm to 20 cm.

  By setting the interval K to such a length, it is possible to collect fry and small fish on the reef M, and to prevent these relatively small fish from being preyed on by large fish. In other words, it can be set as the fishing reef M aimed at raising fry and young fish.

  Moreover, as shown in the AA sectional view and the BB sectional view of FIG. 3, the end portions of the respective waste steel plates a are steel materials 1-5, 1-6, 1-9, in which slits 2 are formed. It is arranged in a state of protruding outward from 1-10. In the following description, the protruding portion of the waste steel plate a is referred to as a protruding portion 5.

  Thus, since each waste-material steel plate a is protruded outward from the steel materials 1-5, 1-6, 1-9, 1-10, when the reef M is set in the sea, the waste-material steel plate Even if a receives a tidal current, the waste steel plate a can be prevented from falling off the reef frame A.

  In addition, although the length L of the protrusion part 5 protruded outward rather than steel materials 1-5,1-6,1-9,1-10 is not specifically limited, In order to prevent drop-off | omission Is preferably about 5 to 10 cm, for example.

  Further, the protruding portions 5 of the respective waste steel plates a are provided with an upper locking hole 6a formed near the upper end of the protruding portion 5 and a lower locking hole 6b formed near the lower end. ing. These upper locking hole 6a and lower locking hole 6b constitute a retaining structure in combination with a wire 7 described later. The retaining structure is for preventing the scrap steel plate a from falling off the fishing reef frame A. In the following description, the upper locking hole 6a and the lower locking hole 6b are also collectively referred to as a locking hole 6.

  Specifically, as shown in the BB sectional view of FIG. 3, the upper locking hole 6a is an end of the steel material 1-5 in which the slit 2 is formed from the upper side position of the protruding portion 5 of the waste steel plate a. It is drilled within a range up to the lower end position of the edge. Further, the lower locking hole 6b is formed in a range from the lower side position of the protruding portion 5 to the upper end position of the end edge of the steel material 1-6.

  Similarly, an upper locking hole 6a and a lower locking hole 6b are also formed in the protruding portion 5 of each scrap steel plate a protruding to the rear opening 4 side.

  Then, as shown in FIG. 4, a retaining structure is formed by inserting a wire 7 through a locking hole 6 formed in each scrap steel plate a. In FIG. 4, each upper locking hole 6 a of the front opening 3 shows a state after the retaining structure is already formed, and each lower locking hole 6 b passes the wire 7. It shows a state in the middle.

  Further, as can be seen from the wire 7 inserted into the upper locking hole 6a of the front opening 3, the end of the inserted wire 7 has a diameter larger than the diameter of the locking hole 6 due to a knot or the like. A locking portion 8 is formed.

  Thereby, the wire 7 can also be prevented from falling off from the locking hole 6, and the waste steel plate a can be more reliably prevented from dropping off from the fishing reef frame A.

  As described above, the reef M according to the present embodiment can be assembled relatively simply by inserting and locking a plurality of waste steel plates a into the reef frame A.

  The fish reef M formed in this way is allowed to sink to the sea floor and function as a place for the growth and breeding of marine organisms.

  Next, the structure of the fishing reef M2 which concerns on other embodiment is demonstrated. As shown in FIG. 5, the fish reef M2 according to another embodiment has a structure in which a plurality of fish reef structures T are connected. In the following description, the same components as those of the above-described fishing reef M may be denoted by the same reference numerals and description thereof may be omitted.

  The reef structure T includes a plate-like body 12 configured by disposing a rectangular plate-like auxiliary plate 11 on the periphery of the waste steel plate a, and leg portions 13 respectively disposed at four corners of the plate-like body 12. It is composed. Hereinafter, the structure of the fishing reef M2 will be described following the manufacturing procedure.

  FIG. 6 is an explanatory view showing a processing method of the waste steel plate a used for the fishing reef M2. As shown to Fig.6 (a), the waste material steel plate a used for the reef M2 has been subjected to press work (punching) or fusing for other purposes, and the punched hole 9 has already been formed. It is in. The scrap steel plate a used here is a steel plate that is a rectangular scrap material having long first side edges 14 and 14 and short second side edges 15 and 15. Here, the length of the first side sides 14 and 14 is 5 / 3X (for example, 5 / 3X = 200 cm), the length of the second side sides 15 and 15 is Y (for example, Y = 120 cm), and the thickness is A 6 mm one is used as an example.

  Next, as shown in FIG. 6B, the waste steel plate a is cut into an appropriate size. Here, it cut | disconnects in the position shown with a broken line in Fig.6 (a), the length of the 1st side sides 14 and 14 is set to X, and the length of the 2nd side sides 15 and 15 is set to Y. FIG. The lengths of X and Y may be the same length or may be different, but since a plurality of waste steel plates a are used to configure the reef M2, these waste steel plates a In any case, it is desirable to have dimensions that can be shaped to approximately the same size.

  Next, as shown in FIG. 7 (a), an auxiliary plate having a long side slightly shorter than the length X in a state of being partially overlapped with the first side sides 14 and 14 of the shaped scrap steel plate a. 11 (hereinafter referred to as auxiliary plate 11a). The auxiliary plate 11a used here has a dimension in which the length of the long side is X-2d (for example, d = 5 to 10 cm) and the length of the short side is 3E (for example, E = 3 to 10 cm). Is used.

  The auxiliary plate 11a is disposed on the waste steel plate a by setting an intermediate point (1 / 2X) of the first side 14 and an intermediate point (1/2 (x-2d)) of the long side of the auxiliary plate 11a. It arrange | positions (refer FIG. 8), and arrange | positions in the state which overlapped only the length E of the short side of the auxiliary | assistant board 11a.

  Next, as shown in FIG. 7 (b), the auxiliary plate having a long side slightly longer than the length Y in a state of being partially overlapped with the second side sides 15 and 15 of the shaped scrap steel plate a. 11 (hereinafter referred to as auxiliary plate 11b). The auxiliary plate 11b has a length of the long side of Y + 4E and a length of the short side of d + 2E (see FIG. 8).

  The auxiliary plate 11b is disposed on the waste steel plate a by matching the midpoint (1 / 2Y) of the second side 15 with the midpoint (1/2 (Y + 4E)) of the long side of the auxiliary plate 11a. And it arrange | positions in the state piled up only the length d of the short side of the auxiliary | assistant board 11a.

  And as shown to Fig.8 (a), each auxiliary plate 11 each arrange | positioned is fixed to the waste material steel plate a. The auxiliary plate 11 may be fixed to the waste steel plate a by any method that can be fixed firmly, but is preferably fixed by welding. Further, the auxiliary plates 11 are also fixed to each other.

  In this way, the plate-like body 12 having the flange portion 16 by the auxiliary plate 11 is formed. The flange portion 16 is formed so as to protrude by 2E from the waste steel plate a uniformly around the circumference of the plate-like body 12. Further, by arranging each auxiliary plate 11 on the waste steel plate a as described above, as shown in FIG. 8A, a side where a partially cut-out hole 9 ′ is present (here, in the drawing) Even with the right second side 15), the flange portion 16 having sufficient strength can be formed. In the reef M2 according to the present embodiment, a partially cut-out hole 9 'is formed by cutting the waste material steel plate a, but the reef is used by using the waste material steel plate a in which the partially cut-out hole 9' originally exists. It is also possible to form M2.

  Next, the leg portion 13 is attached to the plate-like body 12. The leg portion 13 uses a waste steel pipe having a short and square cross section. Specifically, a waste steel pipe having a height G and a width F of 20 cm and a length of 2E is used as an example.

  At least two or more (two in this embodiment) bolt holes 17 are formed at predetermined intervals on the upper surface and the lower surface of the leg portion 13 (see FIG. 7B). Also, bolt holes 18 are formed at positions corresponding to the bolt holes 17 formed in the leg portion 13 at the four corners of the flange portion 16 described above.

  Further, as shown in FIGS. 7B and 8, at least one or more bolt holes 18 formed in the flange portion 16 corresponding to the bolt holes 17 formed on the upper surface of one leg portion 13 are provided. Are formed on the auxiliary plate 11a, and at least one or more of them are formed on the auxiliary plate 11b.

  Therefore, by inserting the bolt 20 into the corresponding bolt hole 17 and the bolt hole 18 and screwing the nut 21 when connecting the fish reef structure T described later, the leg portion 13 becomes the flange portion 16 of the plate-like body 12. It will be fixed in the state over the auxiliary board 11a and the auxiliary board 11b, and the intensity | strength of the flange part 16 can further be improved.

  In this way, the reef structure T is formed by fixing the leg portions 13 with the bolts 20 and the nuts 21 at the four corners of the plate-like body 12 (flange portion 16).

  Next, a plurality of formed fish reef structures T are connected to form a fish reef M2. Specifically, as shown in FIG. 9, bolts 20 projecting from the upper surface of the other fish reef structure T are inserted into the bolt holes 17 formed on the lower surface of each leg portion 13 of the fish reef structure T, respectively. The nut 21 is fixed.

  The fishing reef M2 is formed by repeating this a predetermined number of times. In addition, although the connection number of the fish reef structure T is not specifically limited, It is good to connect so that it may become longer than the longer one of each side of the plate-shaped body 12 at least. Preferably, the adjacent scrap steel plates a have different shapes of the punched holes 9. Thereby, diversity can be further given to a growth environment.

  As described above, the reef M2 according to the present embodiment has a simple structure in which the flange portion 16 and the leg portion 13 are provided in the waste steel plate a to form the reef structure T, and a plurality of these are connected. The reef M2 can be constructed relatively easily.

  The fishing reef M2 formed in this way is set in the sea bottom P by being submerged in the sea like the above-described fishing reef M, and functions as a place for the growth and breeding of marine organisms.

  Specifically, the reef M and the reef M2 are arranged on the seabed P alone, or are arranged in groups on the relatively gentle seabed P as shown in FIG. When a plurality of reefs M and reefs M2 are arranged in groups with a predetermined interval (for example, several tens of meters), marine organisms can be effectively settled, and breeding and breeding are efficiently performed. It can be carried out. In addition, in FIG. 10, although the state which has arrange | positioned two or more reefs M2 on the seabed P is shown as a representative example, only the reefs M, the reefs M and the reefs M2 are mixed, or arrange | positioned with other types of reefs. May be used.

  As shown in FIG. 11, the reef M and the reef M2 arranged on the sea floor serve as a place for growth of many marine organisms such as fish 23, and can contribute to improvement of the marine environment and conservation of marine resources.

  In addition, since iron ions are gradually released from the reef M and the reef M2, it is possible to promote the overgrowth of seaweeds, provide a good retreat for fry and small fish, and deplete marine resources. It can be useful for prevention.

  In particular, by making the metal material constituting the scrap steel plate a, the steel material 1, the reef structure T, etc., a material that is easily corroded by seawater, more iron ions can be released, thereby further increasing the growth of seaweeds. Can be promoted. That is, it is preferable that the metal material composing the metal material constituting the waste steel plate a, the steel material 1, the fishing reef structure T, etc. is easily corroded in the sea. An example of such a metal material is a metal containing iron as a main component, and for example, carbon steel is suitable.

  In addition, the reef M and the reef M2 according to the present embodiment have a configuration in which a plurality of waste steel plates a formed of the above-described metal material are overlapped while maintaining a predetermined interval.

  Therefore, it is possible to provide an environment in which each metal material such as the waste steel plate a, the steel material 1 and the fishing reef structure T is in contact with seawater, and seagrasses are extremely prone to grow.

  In addition, according to the above-mentioned fishing reef M and fishing reef M2, the ocean current flowing toward the scrap steel plate surface is attenuated, and the inside of the fishing reef can be made to be a calm environment. However, it is possible to make the reef easy to stay.

  Moreover, since it forms using the waste material steel plate a, since the hollow 9 of various shapes exists in the swimming space of a marine organism, it can bring diversity to the growth environment of a marine organism.

  As described above, the fishing reef according to the present invention applies a pressing process or a fusing process to a rectangular steel plate for use in other applications and removes a metal plate having a predetermined shape, and then a predetermined number of waste steel plates are fixed. Since it is configured to overlap each other while maintaining the interval, it is possible to provide a fishing reef that can bring diversity to the growth environment of marine organisms and can be constructed relatively easily.

  Finally, the description of each embodiment described above is an example of the present invention, and the present invention is not limited to the above-described embodiment. For this reason, it is a matter of course that various modifications can be made in accordance with the design and the like as long as they do not depart from the technical idea according to the present invention other than the embodiments described above.

DESCRIPTION OF SYMBOLS 1 Steel material 2 Slit 9 Opening hole 11 Auxiliary board 12 Plate-like body 13 Leg part 16 Flange part A Reef frame a Waste material steel plate M Fishing reef M2 Fishing reef T Fishing reef structure

Claims (4)

  A fishing reef constructed by pressing or fusing a rectangular steel plate for use in other applications, removing a predetermined shape of a metal plate, and then superposing each other with a predetermined number of scrap steel plates.   The fishing reef according to claim 1, wherein an edge of the waste steel plate is inserted into a slit of the frame body so that the waste steel plates are overlapped with each other at regular intervals.   The frame body is formed with a slit for inserting and fixing an edge of the waste steel plate in an edge plate corresponding to one side of the L-shaped steel in parallel at a constant interval. Fishing reef.   An auxiliary plate is disposed on the periphery of the waste steel plate to form a flange portion, and a leg portion is disposed on the flange portion to constitute a fishing reef structure, and by connecting a plurality of the reef structures, The fishing reef according to claim 1, wherein legs are overlapped with each other while maintaining a gap between the waste steel plates.

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