JP3116075U - Growth member mounting structure, fastener, nut-integrated growth member mounting structure, nut-integrated growth member, growth test device - Google Patents

Abstract

An excellent growth member mounting structure capable of smoothly attaching and detaching a growth member in water is realized.
An attachment structure for detachably attaching a growth member for growing algae to a breeding reef, a bolt provided on the breeding reef, and an operation unit Y2 that can be operated in a gripped state. And a fastening device X having a nut portion Y3 for attaching to the bolt 14, and by operating the operation portion Y2 in a state where the bolt 14 and the nut portion Y3 are screwed together, the growth The member is detachably fixed to the bolt 14.
[Selection] Figure 2

Description

  The present invention provides an attachment structure for detachably attaching a growth member for growing algae to a growth reef for growing root resources such as abalone and sea urchin, and a stop used for attaching the growth member. An attachment structure for attaching a nut-integrated growth member for growing algae to a breeding reef detachably, and a nut-integrating growth member for growing algae, and a growth member for growing algae The present invention relates to a growth test device for testing whether or not a place to be placed is a place suitable for algae growth.

2. Description of the Related Art Conventionally, there is known a breeding reef provided with detachable growth members for growing algae suitable for the growth of organisms that live in water and creating a seaweed bed. Specifically, this type of breeding reef is configured to hold the growth member in a detachable manner by using a protrusion or the like protruding from the anchor member (see Patent Document 1).
Japanese Patent No. 3193704

  However, in the conventional configuration, when algae are grown on the growth member, the algae may also grow on the protrusions holding the growth member, and smooth attachment and removal of the growth member in water May interfere with work.

  The present invention has been made paying attention to such a problem, and a main purpose thereof is to realize an excellent attachment structure for a growth member that allows smooth attachment and removal work of the growth member in water. There is.

  That is, the growth member mounting structure of the present invention is a mounting structure for detachably attaching a growth member for growing algae to a breeding reef, and is gripped with a bolt provided on the breeding reef. And a fastening device having a nut portion for attaching to the bolt, and operating the operation portion in a state where the bolt and the nut portion are screwed together, The member is detachably fixed to the bolt.

  If this is the case, for example, it is possible to operate by grasping the operation unit even when wearing a glove, and even if algae grows on the surface of the operation unit, there is a problem in operation of the operation unit. No. Moreover, since algae does not adhere to the nut portion, the operation portion can be smoothly operated to remove the fastening tool from the bolt, and reattachment can be easily performed.

  That is, it is possible to realize an excellent growth member mounting structure in which the growth member can be smoothly attached and removed in water.

  In addition, if the said fastening tool comprises the exposure prevention part distribute | arranged to the position which covers the exposed part of the said bolt in the attachment state, adhesion of the algae to a bolt can be prevented suitably.

  As a desirable mode of the growth member mounting structure of the present invention, the growth member includes a through-hole penetrating in the thickness direction, and the exposure preventing portion is formed from a through-hole of the bolt inserted into the through-hole. The thing which prevents exposure of the front-end | tip part of the protruded volt | bolt is mentioned.

  In order to effectively prevent rust due to seawater, one of the bolt and the fastening device is made of stainless steel and the other is formed of a non-metallic material, or the bolt and the fastening device It is preferable that both of the fastening devices are formed of a nonmetallic material.

  In order to improve the attachment property, it is desirable that each of the portions where the growing member and the fastening device are in contact with each other has a flat surface.

  If the growth member and the fastening device are attached via an elastic body, unevenness can be effectively absorbed.

  As a desirable mode of the fastening device used in the above-described growth member mounting structure, the fastening device includes an operation portion that can be operated in a gripped state, and a nut portion that can be screwed to a bolt by operation of the operation portion. The thing which comprises is mentioned.

  If the fastener is provided with an exposure preventing portion that prevents the tip of the bolt from being exposed in the attached state, it is possible to suitably prevent algae from adhering to the bolt.

  In order to effectively prevent rusting caused by seawater, it is desirable to form with a nonmetallic material.

  An attachment structure for detachably attaching a nut-integrated growth member for growing algae to a breeding reef, wherein the nut-integrating growth member can be operated in a gripped state and the breeding reef A nut portion for attaching to the bolt provided on the nut, and by operating the operation portion in a state where the bolt and the nut portion are screwed together, the nut-integrated growth member can be attached to and detached from the bolt. If the nut-integrated growth member mounting structure is characterized by being fixed, for example, it can be operated by grasping the operation part even when wearing gloves, and algae grows on the surface of the operation part. Even if it does, it will not become a problem of operation of an operation part. Moreover, since algae does not adhere to the nut portion, the nut-integrated growing member can be removed from the bolt by smoothly operating the operation portion, and can be easily attached again. Moreover, since it contributes to the reduction of members, the cost can be reduced.

  That is, it is possible to realize an excellent nut-integrated growth member mounting structure that enables smooth attachment and removal operations of the growth member in water and can reduce costs.

  In addition, if the nut-integrated growth member is provided with an exposure preventing portion disposed at a position covering the exposed portion of the bolt in the attached state, it is possible to suitably prevent algae from adhering to the bolt. it can.

  In order to effectively prevent rust due to seawater, either one of the bolt and the nut-integrated growth member is made of stainless steel and the other is made of a non-metallic material, or It is preferable that both the bolt and the nut-integrated growth member are made of a non-metallic material.

  As a desirable aspect of the nut-integrated growth member used in the above-described nut-integrated growth member mounting structure, the nut-integrated growth member has a growth portion for growing algae formed on at least a part of the surface, Examples include an operation portion that can be operated in a gripped state and a nut portion that can be screwed to a bolt by operating the operation portion.

  If the nut-integrated growth member is provided with an exposure preventing portion that prevents the tip of the bolt from being exposed in the attached state, it is possible to suitably prevent algae from adhering to the bolt.

  In order to effectively prevent rusting caused by seawater, it is desirable to form with a nonmetallic material.

  For testing whether a place where a growth member for growing algae is placed is a place suitable for algae growth, growth for growing algae formed on at least a part of the surface A nut-integrated growth member comprising a portion, an operation portion that can be operated in a gripped state, and a nut portion that can be screwed to a bolt by operation of the operation portion, and a plurality of the nut-integrated growth members For example, a nut integrated type planted with seedlings of different kinds of algae, for example, a growth test tool comprising a plurality of bolts and a base that can be fixed to an underwater rock or the like By simply attaching the growth member to a bolt and submerging it in the sea, it is possible to know at a glance whether the place is suitable for the growth of algae.

  That is, it is possible to provide an excellent growth test tool that can easily know whether or not the place is suitable for algae growth.

  As described above, according to the growth member mounting structure of the present invention, for example, even when wearing a glove, it can be operated by grasping the operation portion, and even if algae grows on the surface of the operation portion. There is no problem of operation of the operation unit. Moreover, since algae does not adhere to the nut portion, the operation portion can be smoothly operated to remove the fastening tool from the bolt, and reattachment can be easily performed.

  That is, it is possible to realize an excellent growth member mounting structure in which the growth member can be smoothly attached and removed in water.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

<First Embodiment>
The breeding reef A employing the growth member mounting structure according to the first embodiment of the present invention is used by being sunk on the sea floor. For example, as shown in FIG. Sone resource breeding block 1 which mainly aims to grow and propagate sea urchin resources such as sea urchins from juveniles to adults, and algae such as arame, kurome, kajime and hondawala grow and proliferate to form an algae field An algae growth member 2 (corresponding to the “growth member” of the present invention) whose main purpose is to perform, and a fastener X for detachably attaching the algae growth member 2 to the root resource growth block 1; A concrete base 3 that is grounded to the seabed and supports the root resource growth block 1 and the algae growth member 2; an intermediate mounting member 4 disposed between the root resource growth block 1 and the concrete base 3; Proliferation block And a protective net device 5 for forming a root resource growth region P1 suitable for the growth and multiplication of juveniles and an algal growth region P2 suitable for the growth and multiplication of algae in the internal space covered by covering the algal growth member 2 and And a through-hole member 6 that can be attached to and detached from a later-described through-hole 31 h provided in the concrete base 3. Hereinafter, each part is demonstrated concretely.

  As shown in FIGS. 1 and 2, the Sone resource breeding block 1 has a shape in which a regular square pyramid having a substantially square shape whose lower surface is smaller than the upper surface is continuously integrated under a substantially square plate in plan view. The main body 11 is made of a concrete block. And the algae growth member 2 is set to the upper surface so that attachment is possible. In addition, the other roots resource multiplication block 1 can also be attached to the said upper surface. An anchor bar 12 to be inserted into a block mounting portion (not shown) of the concrete base 3 is embedded in the lower end portion of the main body portion 11 so as to protrude vertically downward. That is, the root resource breeding block 1 is fixed to the concrete base 3 via the intermediate mounting member 4 by the structure in which the anchor bars 12 are hooked on the spring washer in the block mounting portion. Further, a hemispherical protrusion 13 is formed at the upper end of the main body 11 so as to protrude toward the adjacent soot resource breeding block 1, and the adjacent main body 11 directly collides with the protrusion 13. Prevents chipping and cracking. The protrusion 13 also has a function of preventing the root resource breeding block 1 pivotally attached to the block attachment portion 34 from rotating in the horizontal direction and a function of positioning the adjacent root resource breeding block 1. ing. In addition, a plurality of (four in the illustrated example) stainless steel bolts 14 are embedded in an upright posture on the upper surface of the main body 11 so that the algae growth member 2 can be detachably attached.

  The algae growth member 2 has two types of concrete plates, a rectangular plate shown in FIG. 2 and a square plate (not shown), both of which are fasteners with bolts 14 inserted through the through holes 2a formed in the center. X and a rubber elastic body (not shown) having a thin and substantially ring shape are detachably fixed to the upper surface of the soot resource breeding block 1. In addition, the peripheral part of the through-hole 2a is made into the flat surface in consideration of the attachment property (sitting when attached) of the base part X1. In this embodiment, only a rectangular plate is used. In addition, the top surface of the algae growth member 2 is formed with unevenness having a reverse gradient, which is a transfer of the shape of natural crushed stone, integrally with the main body portion of the concrete plate, and seaweed B0 such as alame holds the unevenness at the root. It is configured to be easy to wear. In particular, the rectangular plate algae breeding member 2 is a hanging type intermediate breeding that hangs the seed yarn on which the spores or zoospores of seaweed B0 such as arame are wrapped around the surface unevenness and cultivates seaweed B0. It is suitable for use in a system. Therefore, in the case of the present embodiment, the size of the algal growth member 2 is such that the seaweed B0 is less likely to be damaged by herbivores such as sea urchins, snails, sea slugs, etc. As the seaweed B0 grows by visual observation, which is a size capable of secreting the bitter component, until the seaweed B0 reaches 3 to 10 cm, then the algal growth member 2 is pulled up from the sea and attached to the bolt 14 of the root resource growth block 1 on the work boat. Yes.

  As shown in FIG. 3, the fastening tool X includes a substantially disc-shaped pedestal portion X1 and an operation portion X2 provided on the upper surface side of the pedestal portion X1, and in this embodiment, For example, it is integrally formed with a synthetic resin having seawater resistance such as AES.

  The operation portion X2 is provided at a position sandwiching the upright portion X21 and a substantially cylindrical upright portion X21 (corresponding to the “exposure prevention portion” of the present invention) standing up from a substantially central portion of the pedestal portion X1 and facing upward. A pair of thin plate-like collar portions X22 which are divided into two forks, and can be operated by gripping the entire operation portion X2, or a part of the operation portion X2 (for example, one of the collars X2). Part X22) can also be gripped and operated.

  In the present embodiment, the nut portion X3 is formed from the back surface of the pedestal portion X1 to the substantially central height position of the upright portion X21, and can be screwed to the bolt 14 using the nut portion X3.

  As shown in FIG. 1, the concrete base 3 is a member having an anchor function for stably installing the breeding reef A on the sea floor, and includes a base body 31 and three support legs 32 integrally formed of concrete. The basic composition is what is composed.

  As shown in FIG. 1, the intermediate mounting member 4 includes a thin plate-like substrate portion 41 having a substantially rectangular shape in plan view, and four gap adjusting projections 42 protruding from the upper surface of the substrate portion 41. These parts are integrally formed of concrete.

  As shown in FIG. 1, the protective net device 5 has a columnar member 51 erected on the concrete base 3, a protective net 52 that is attached using the columnar member 51, and the protective net 52 is fastened to the columnar member 51. A fastener 53 is provided. Note that a part of the protective net 52 and the fastener 53 are omitted for the sake of drawing. Hereinafter, each part will be described more specifically.

  The protective net 52 is made of a synthetic fiber having flexibility, and as shown in FIG. 1, an upper surface net 521 having substantially the same size as the surface connecting the upper ends of the four columnar members 51. A total of four standing nets 522 arranged between the adjacent columnar members 51, and each side of the upper surface net 521 and each side of the upright net 522 adjacent to each side of the upper surface net 521, It is the single thing which continued.

  Then, the mesh size of the upper surface mesh 521 is set to a size such that alga-eating fish such as Aigo, Isuzumi and Budai cannot pass through. In addition, the standing net 522 is configured to have two upper and lower stages, and the lower mesh size is set to a level that can prevent the passage of juveniles and prevent the invasion of carnivorous marine animals such as starfish and octopus. On the other hand, the mesh size on the upper side is set to a size that prevents the algalivorous fish from passing through while expanding the mesh size on the lower side. Furthermore, silicon is applied to the entire protective net 52 in order to prevent deposits such as barnacles and shellfish from adhering to the protective net 52.

  In this embodiment, a so-called insulation lock type binding band is used as the fastener 53. The fastener 53 is made of a general synthetic resin so that it can be cut using a tool having a blade part such as a cutter knife or a scissors.

  As shown in FIG. 1, the through-hole member 6 includes a rigid frame body having a substantially rectangular shape in plan view, and a synthetic fiber net portion having a peripheral portion supported by the frame body. The mesh size of the through-hole member 6 is set to such an extent that the passage of the young body can be prevented. In the present embodiment, silicon is applied to the entire through-hole member 6 in order to prevent deposits such as barnacles and shellfish from adhering to the through-hole member 6.

  Next, a method of removing and attaching the algae growth member 2 from the root resource growth block 1 in the sea will be described.

  The protective net 52 is partly or entirely removed from the columnar member 51, and the description will proceed assuming that the operator can easily access the algae growth member 2 and the root resource growth block 1. .

  When the operator grips the operation part X2 of the fastening tool X with his bare hands or a gloved hand and turns the fastening tool X in a direction to remove the fastening tool X, the screw 14 and the nut part X3 are unscrewed, and the bolt 14 The fastening device X can be removed from. And if the algae growth member 2 is pulled up from the bolt 14, the algae growth member 2 can be easily removed from the bolt 14.

  Thus, since the algae has not adhered to the bolt 14 after removing the fastening device X and the algae growth member 2, a new fastening device X or the algae growth member 2 is attached to the bolt 14. It can be done easily.

  As described above, in the breeding reef A adopting the growth member mounting structure according to the first embodiment, for example, the operator can grasp and operate the operation unit X2 even in a gloved state, and the surface of the operation unit X2 Even if algae grows, there is no problem of operation of the operation unit X2. Moreover, since no algae adheres to the nut part X3, the operation part X2 can be smoothly operated to remove the fastening tool X from the bolt 14, and reattachment can be easily performed. .

  That is, it is possible to realize an excellent growth member mounting structure in which the algae growth member 2 can be smoothly attached and removed in water.

  In addition, since the said fastener X comprises the standing part X21 which functions as an exposure prevention part distribute | arranged to the position which covers the exposed part of the said bolt 14 in the attachment state, adhesion of the algae to the bolt 14 is suitable. Can be prevented.

  Moreover, since the bolt 14 is made of stainless steel and the fastening device X is formed of a synthetic resin having seawater resistance which is a non-metallic material, rusting due to seawater can be very effectively prevented. Can do.

  Moreover, since the part which the algae growth member 2 and the fastening tool X contact | abut is made into the flat surface, respectively, attachment property can be improved.

  Moreover, since the algae growth member 2 and the said fastening device X are attached via an elastic body, unevenness can be absorbed effectively.

  In addition, it does not prevent that both the volt | bolt 14 and the fastener X are formed with a nonmetallic material.

Second Embodiment
In the second embodiment, components having the same names and the same reference numerals as those in the first embodiment have the same configuration as those in the first embodiment and are described as having similar operational effects. Omitted or simplified, the description will focus on the differences from the first embodiment.

  Like the first embodiment, the breeding reef A adopting the nut-integrated growth member mounting structure according to the second embodiment of the present invention is used by being sunk on the sea floor. For example, abalone, tokobushi , Sone resource breeding block 1 whose main purpose is to grow and propagate Sone resources such as Sazae and sea urchins from juveniles to adults, and algae such as Alame, Kurome, Kajime and Honda walla grow and proliferate The nut-integrated algae growth member Y (corresponding to the “nut-integrated growth member” of the present invention) shown in FIG. 4 whose main purpose is to form a field, and these sock root resource growth blocks grounded to the sea floor 1 and a nut-integrated algae-growing member Y for supporting a concrete base 3, an intermediate mounting member 4 disposed between the root-and-root resource-growing block 1 and the concrete base 3, a root-and-root-growing block 1 and a nut-integrated type A protective net device 5 for forming a root resource growth region P1 suitable for growth and multiplication of juveniles and an algae growth region P2 suitable for growth and multiplication of algae in the internal space covered by covering the algae growth member Y; And a through-hole member 6 that can be attached to and detached from a later-described through-hole 31 h provided in the concrete base 3. Hereinafter, each part is demonstrated concretely.

  As shown in FIG. 4, the nut-integrated algae growth member Y includes a substantially disk-shaped pedestal portion Y1 and an operation portion Y2 provided on the upper surface side of the pedestal portion Y1. In the form, for example, it is integrally formed with a synthetic resin having seawater resistance such as AES, and the entire surface of each part is set as a growing part Ya for growing algae.

  The operation portion Y2 is provided at a position sandwiching the upright portion Y21 and a substantially cylindrical upright portion Y21 (corresponding to the “exposure prevention portion” of the present invention) that stands up from the substantially central portion of the pedestal portion Y1. A pair of thin plate-like collar portions Y22 that are divided into two forks. The entire operation portion Y2 can be gripped and operated, or a part of the operation portion Y2 (for example, one collar) The portion Y22) can also be gripped and operated. In the present embodiment, the nut portion Y3 is formed from the back surface of the pedestal portion Y1 to the substantially central height position of the upright portion Y21, and can be screwed to the bolt 14 using the nut portion Y3.

  Next, a method of removing and attaching the nut-integrated algae growth member Y from the root resource growth block 1 in the sea will be described.

  The protective net 52 is partly or entirely removed from the columnar member 51, and the description will be made assuming that the operator can easily access the nut-integrated algae growth member Y and the root resource growth block 1. I will do it.

  When the operator grasps the operation part Y2 of the nut-integrated algae growth member Y with a bare hand or a gloved hand and turns the nut-integrated algae growth member Y in a direction away from the nut-integrated algae growth member Y, the bolt 14 and the nut part Y3 are screwed together. Is released, and the nut-integrated algal growth member Y can be removed from the bolt 14.

  In this way, since the algae are not attached to the bolt 14 after the nut-integrated algae-growing member Y is removed, a new nut-nut-integrated algae-growing member Y can be easily attached to the bolt 14. be able to.

  As described above, in the breeding reef A that adopts the nut-integrated growth member mounting structure according to the second embodiment, for example, even when wearing a glove, the operation unit Y2 of the nut-integrated algae breeding member Y is grasped. Even if algae grows and grows large on the surface of the operation unit Y2, there is no problem of operation of the operation unit Y2. Further, since no algae adheres to the nut portion Y3, the operation portion Y2 can be smoothly operated to remove the nut-integrated algae breeding member Y from the bolt 14, and the reattachment can be easily performed. be able to.

  That is, it is possible to realize an excellent nut-integrated growing member mounting structure in which the nut-integrating algae-growing member Y can be smoothly attached and detached in water.

  The nut-integrated algae-growing member Y includes an upright portion Y21 that functions as an exposure prevention portion disposed at a position that covers the exposed portion of the bolt 14 in the attached state, so that the algae adheres to the bolt 14. Can be suitably prevented.

  The bolt 14 is made of stainless steel, and the nut-integrated algae breeding member Y is made of a non-metallic material made of synthetic resin having seawater resistance, so that rusting by seawater can be very effectively prevented. it can.

  It should be noted that both the bolt 14 and the nut-integrated algae growth member Y are not prevented from being formed of a nonmetallic material.

  Further, the shape of the nut-integrated algae-growing member Y is not limited to that of the present embodiment, and is intended to further promote the algae landing. For example, as shown in FIGS. A plurality of recesses may be formed on the surface side of the portion Y1.

  Further, as shown in FIG. 7, the peripheral portion of the pedestal portion Y1 ′ may be knurled to form an operation portion Y2 ′.

<Third Embodiment>
In the third embodiment, components having the same names and the same reference numerals as those in the first embodiment or the second embodiment have the same configurations as those in the first embodiment or the second embodiment, and The description will be omitted or simplified as having the same effects, and differences from the first embodiment or the second embodiment will be mainly described.

  The growth test tool Z according to the third embodiment of the present invention is for testing whether or not the place where the algal growth member 2 for growing algae is disposed is a place suitable for the growth of algae. As shown in FIG. 8, the nut-integrated algae breeding member Y and the three stainless-steel bolts 14 for detachably attaching the nut-integrated algae breeding member Y are attached to a rock in water. And a substrate K that can be fixed.

  The base body K includes a thin plate-like substrate portion K11 having a substantially rectangular shape in plan view, and three bolts 14 erected on the surface of the substrate portion K11 at substantially equal intervals. Made of stainless steel.

  Next, the usage method of this growth test tool Z is demonstrated.

  First, the substrate portion K11 is fixed to a rock on the seabed (not shown) using a bond. Then, the nut-integrated algal growth member Y is attached to the three bolts 14. At this time, in the growing part Ya of the three nut-integrated algae growth members Y, seedlings and seedlings of different algae such as arame, yamatomatamo, and akamoku are planted, for example. After a certain period of time, it is possible to know the difference in the growth state of the seedlings of each algae, and in the same manner as in the second embodiment, the nut-integrated algae growth member Y is removed from the substrate portion K11, and other types are obtained. The nut-integrated algae growth member Y in which the seedlings are planted can be newly attached.

  As described above, the growth test device Z according to the third embodiment can be obtained by simply attaching the nut-integrated algal growth member Y planted with seeds of different types of algae to the bolts 14 and submerging them in the sea. It is possible to know at a glance whether this is a place suitable for algae growth.

  That is, it is possible to provide an excellent growth test tool Z that can easily know whether or not the place is suitable for algae growth.

  In addition, the structure of the growth test tool Z is not restricted to the thing of this embodiment, For example, the number of nut-integrated algae growth members Y should just be plural.

  Moreover, although the three nut-integrated algae growth members Y are arranged in a row, the arrangement method can be changed as appropriate.

  Moreover, although the board | substrate part K11 is being fixed to the rock of the seabed, the fixation destination may be arbitrary.

  The present invention is not limited to the above-described embodiments.

  For example, the breeding reef that employs the growth member mounting structure according to the present invention is not limited to the breeding reef described above, and can be used, for example, for a breeding reef having a protective net formed with the same mesh size.

  The shapes of the fastening device and the nut-integrated algal growth member are not limited to those described above.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

The perspective view which shows the breeding reef which concerns on one Embodiment of this invention. The perspective view which shows the attachment relationship, such as a fastening tool and algae growth member in the same embodiment. The figure which shows the fastening tool in the same embodiment. The figure which shows the nut integrated type algal growth member which concerns on one Embodiment of this invention. The perspective view which shows the nut integrated type algal growth member which concerns on other embodiment of this invention. The top view and sectional drawing of the nut integrated type algae growth member. The figure which shows the nut integrated type algal growth member which concerns on other embodiment of this invention. The perspective view which shows the growth test device which concerns on one Embodiment of this invention.

Explanation of symbols

A ... Breeding reef B0 ... Algae 2 ... Algal breeding member (growth member)
14... Bolt 2a... Through-hole K ... Base X ... Fastener X2 ... Operation part X21 ... Exposure prevention part (standing part)
X3 ... Nut Y ... Nut-integrated growth member (nut-integrated algae growth member)
Y2 .... Operation part Y21 ... Exposure prevention part (standing part)
Y3 ... Nut part Ya ... Growth part Z ... Growth test equipment

Claims (18)

An attachment structure for detachably attaching a growth member for growing algae to a growth reef,
A bolt provided on the breeding reef;
An operation portion operable in a gripped state, and a fastening device having a nut portion to be attached to the bolt,
A growing member mounting structure characterized in that the growing member is detachably fixed to the bolt by operating the operation portion in a state where the bolt and the nut portion are screwed together.   The growth member mounting structure according to claim 1, wherein the fastener includes an exposure preventing portion disposed at a position covering the exposed portion of the bolt in the mounted state. The growth member comprises a through-hole penetrating in the thickness direction,
The growth member mounting structure according to claim 2, wherein the exposure prevention portion prevents exposure of a tip portion of a bolt protruding from the through hole among the bolts inserted through the through hole.   The attachment of the growth member according to any one of claims 1 to 3, wherein one of the bolt and the fastening tool is made of stainless steel and the other is made of a non-metallic material. Construction.   The growth member mounting structure according to any one of claims 1 to 3, wherein both the bolt and the fastener are made of a non-metallic material.   The growing member mounting structure according to any one of claims 1 to 5, wherein each of the parts where the growing member and the fastening tool abut each other is a flat surface.   The growth member mounting structure according to claim 1, wherein the growth member and the fastening device are attached via an elastic body. A fastening device used in the growth member mounting structure according to any one of claims 1 to 7,
A fastening device comprising: an operation portion operable in a gripped state; and a nut portion capable of being screwed to a bolt by operation of the operation portion.   The fastening device according to claim 8, further comprising an exposure preventing portion that prevents the tip of the bolt from being exposed in the attached state.   The fastener according to claim 8 or 9, wherein the fastener is made of a non-metallic material. An attachment structure for detachably attaching a nut-integrated growth member for growing algae to a breeding reef,
The nut-integrated growth member comprises an operation portion that can be operated in a gripped state and a nut portion that is attached to a bolt provided on the breeding reef,
A nut-integrated growth characterized in that the nut-integrated growth member is detachably fixed to the bolt by operating the operation portion in a state where the bolt and the nut portion are screwed together. Member mounting structure.   The nut-integrated growth member mounting structure according to claim 11, wherein the nut-integrated growth member includes an exposure prevention portion disposed at a position covering the exposed portion of the bolt in an attached state.   13. The nut-integrated growth according to claim 11, wherein one of the bolt and the nut-integrated growing member is made of stainless steel and the other is formed of a non-metallic material. Member mounting structure.   13. The nut-integrated growth member mounting structure according to claim 11 or 12, wherein both the bolt and the nut-integrated growth member are made of a non-metallic material. A growth member used for the nut-integrated growth member mounting structure according to any one of claims 11 to 14,
A growth part for growing algae formed on at least a part of the surface; an operation part operable in a gripped state; and a nut part capable of being screwed to a bolt by operation of the operation part. A nut-integrated growth member.   16. The nut-integrated growth member according to claim 15, further comprising an exposure prevention portion that prevents the tip end portion of the bolt from being exposed in an attached state.   The nut-integrated growth member according to claim 15 or 16, wherein the nut-integrated growth member is formed of a non-metallic material. It is for testing whether a place where a growth member for growing algae is arranged is a place suitable for algae growth,
A nut comprising a growing part for growing algae formed on at least a part of the surface, an operating part that can be operated in a gripped state, and a nut part that can be screwed to a bolt by operating the operating part. A body growth member,
A growth test device comprising a base having a plurality of bolts for attaching a plurality of nut-integrated growth members and capable of being fixed to an underwater rock or the like.

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