JP2020134411A - Fastening device for radioactive material storage container - Google Patents

Abstract

To provide a small fastening device.SOLUTION: A fastening device 3 includes a U-shaped member 20, a first connection member 21, a first bolt 25, a second connection member 26, and a second bolt 30. The U-shaped member 20 has a bending part 31. The bending part 31 is arranged along a cylindrical part 13a of a trunnion 13. The bending part 31 is bent along the cylindrical part 13a of the trunnion 13. The first bolt 25 is fixed to a trestle 2 by a first auxiliary fixing tool 23. The second bolt 30 is fixed to the trestle 2 by a second auxiliary fixing tool 28.SELECTED DRAWING: Figure 2

Description

本発明は、放射性物質が収容された貯蔵容器を、放射性物質貯蔵施設の床面或いは貯蔵架台に固縛する装置に関する。 The present invention relates to a device for fixing a storage container containing radioactive material to the floor surface or a storage stand of a radioactive material storage facility.

放射性物質は、キャスクと呼ばれる金属製の貯蔵容器に収容される。貯蔵容器は、筒状の容器本体と、容器本体の側面から突出した突起とを有する。突起は、トラニオンと呼ばれる。 Radioactive material is stored in a metal storage container called a cask. The storage container has a tubular container body and protrusions protruding from the side surface of the container body. The protrusions are called trunnions.

特許文献１には、トラニオンを用いてキャスクを架台に固縛する固縛装置が開示されている。図１２に、特許文献１の固縛装置の模式図を示している。図１２に示すように、キャスク５００が、架台５１０の上に配置されている。キャスク５００は、トラニオン５０１を有する。 Patent Document 1 discloses a lashing device for lashing a cask to a gantry using a trunnion. FIG. 12 shows a schematic view of the lashing device of Patent Document 1. As shown in FIG. 12, the cask 500 is arranged on the gantry 510. Cask 500 has a trunnion 501.

固縛装置６００は、図１２の拡大図に示すように、トラニオン５０１の上に配置されたトラニオン固定金具６０１を有する。トラニオン固定金具６０１は、水平に配置されている。トラニオン固定金具６０１の両端部にそれぞれボルト６０２、６０３が挿通している。ボルト６０２、６０３の下端部は、架台５１０に固定されている。 The lashing device 600 has a trunnion fixing bracket 601 arranged on the trunnion 501, as shown in the enlarged view of FIG. The trunnion fixing bracket 601 is arranged horizontally. Bolts 602 and 603 are inserted through both ends of the trunnion fixing bracket 601 respectively. The lower ends of the bolts 602 and 603 are fixed to the gantry 510.

トラニオン固定金具６０１の上方に、ナット６０４、６０５が配置されている。ナット６０４、６０５はそれぞれボルト６０２、６０３に螺合している。ナット６０４、６０５を締付けることにより、トラニオン固定金具６０１が、上方からトラニオン５０１を押圧する。これにより、キャスク５００が架台５１０に固縛される。トラニオン固定金具６０１は、金属製のキャスク５００を固縛できるように、通常、鋼材等からなる。 Nuts 604 and 605 are arranged above the trunnion fixing bracket 601. The nuts 604 and 605 are screwed into the bolts 602 and 603, respectively. By tightening the nuts 604 and 605, the trunnion fixing bracket 601 presses the trunnion 501 from above. As a result, the cask 500 is fixed to the gantry 510. The trunnion fixing bracket 601 is usually made of a steel material or the like so that the metal cask 500 can be fixed.

特開２０１３−１６０６７５号公報Japanese Unexamined Patent Publication No. 2013-160675

上記固縛装置６００において、ナット６０４、６０５を締付けたとき、トラニオン固定金具６０１の両端部が上方から押圧される。これによりトラニオン固定金具６０１の両端部に曲げモーメントＭ₁、Ｍ₂が作用し、曲げ応力が生じる。この曲げ応力に耐える固定金具にするためには、トラニオン固定金具６０１において、曲げモーメントＭ₁、Ｍ₂の支点となるトラニオン上方部分Ｏにおける剛性が高いことが必要である。トラニオン上方部分Ｏの剛性を高めるためには、トラニオン上方部分Ｏの厚さを厚くする必要がある。 When the nuts 604 and 605 are tightened in the lashing device 600, both ends of the trunnion fixing bracket 601 are pressed from above. As a result, bending moments M ₁ and M ₂ act on both ends of the trunnion fixing bracket 601 to generate bending stress. In order to obtain a fixing bracket that can withstand this bending stress, the trunnion fixing bracket 601 needs to have high rigidity in the trunnion upper portion O that is a fulcrum of the bending moments M ₁ and M ₂ . In order to increase the rigidity of the trunnion upper portion O, it is necessary to increase the thickness of the trunnion upper portion O.

上記理由から、図１２に示すように、特許文献１のトラニオン固定金具６０１の厚さＤは厚い。トラニオン固定金具６０１の材質は、上述したように、鋼材等からなるため、トラニオン固定金具６０１の厚さＤが厚い場合、トラニオン固定金具６０１の重量が重い。そのため、トラニオン固定金具６０１を取扱いにくい。また、トラニオン固定金具６０１を含む固縛装置６００も取り扱いにくい。 For the above reason, as shown in FIG. 12, the thickness D of the trunnion fixing bracket 601 of Patent Document 1 is thick. As described above, the material of the trunnion fixing bracket 601 is made of steel or the like. Therefore, when the thickness D of the trunnion fixing bracket 601 is thick, the weight of the trunnion fixing bracket 601 is heavy. Therefore, it is difficult to handle the trunnion fixing bracket 601. Further, the lashing device 600 including the trunnion fixing bracket 601 is also difficult to handle.

本発明は、小型化の固縛装置を提供することを目的とする。 An object of the present invention is to provide a miniaturized lashing device.

本発明の放射性物質貯蔵容器の固縛装置は、放射性物質が収容される筒状の容器本体と、前記容器本体の側面から突出した突起とを有する貯蔵容器を、縦置きにした状態で、放射性物質貯蔵施設の床面或いは貯蔵架台に固縛する固縛装置であって、前記突起の周側面に沿って配置され、前記突起の周側面に沿って湾曲した湾曲部と、前記湾曲部の両端のそれぞれから延在し、放射性物質貯蔵施設の床面或いは貯蔵架台に固定される延在部と、を有する固定具を備える。 The lashing device for the radioactive substance storage container of the present invention is a radioactive storage container having a tubular container body for accommodating the radioactive substance and a protrusion protruding from the side surface of the container body in a vertically placed state. A lashing device that ties to the floor surface or storage pedestal of a material storage facility, and is arranged along the peripheral side surface of the protrusion, and curved along the peripheral side surface of the protrusion, and both ends of the curved portion. It is provided with a fixture having an extension portion extending from each of the above and being fixed to the floor surface of the radioactive material storage facility or a storage stand.

本発明によると、小型の固縛装置を提供することができる。 According to the present invention, a small lashing device can be provided.

本発明の第１実施形態に係る固縛装置により貯蔵容器を固縛したときの貯蔵容器および固縛装置の正面図である。It is a front view of the storage container and the lashing device when the storage container is lashed by the lashing device which concerns on 1st Embodiment of this invention. 図１に示す固縛装置およびその周辺の拡大図である。It is an enlarged view of the lashing device shown in FIG. 1 and its surroundings. 図１に示す固縛装置の分解図である。It is an exploded view of the lashing device shown in FIG. 図２のIV−IV線に沿った断面図である。It is sectional drawing along the IV-IV line of FIG. 図２に示す固縛装置の第１補助固定具周辺の拡大図である。It is an enlarged view around the 1st auxiliary fixture of the lashing device shown in FIG. 固縛装置によりキャスクを架台に固定する方法を順に示す模式図である。It is a schematic diagram which shows the method of fixing a cask to a gantry by a lashing device in order. 固縛装置によりキャスクを架台に固定する方法を順に示す模式図である。It is a schematic diagram which shows the method of fixing a cask to a gantry by a lashing device in order. 貯蔵容器と本発明の第２実施形態に係る固縛装置の断面図であり、治具を回転させる前の状態を示す図である。It is sectional drawing of the storage container and the lashing device which concerns on 2nd Embodiment of this invention, and is the figure which shows the state before rotating a jig. 貯蔵容器と本発明の第２実施形態に係る固縛装置の断面図であり、治具を回転させた後の状態を示す図である。It is sectional drawing of the storage container and the lashing device which concerns on 2nd Embodiment of this invention, and is the figure which shows the state after rotating a jig. 貯蔵容器と他の変形例に係る固縛装置の断面図である。It is sectional drawing of the storage container and the lashing device which concerns on other modification. 貯蔵容器と他の変形例に係る固縛装置の断面図である。It is sectional drawing of the storage container and the lashing device which concerns on other modification. 従来の固縛装置により貯蔵容器を固縛したときの貯蔵容器および固縛装置の正面図である。It is a front view of the storage container and the lashing device when the storage container is lashed by the conventional lashing device.

〔第１実施形態〕
図１に、放射性物質貯蔵施設の一部を示している。図１に示すように、貯蔵容器１が、架台２の上に、縦置きの状態で配置されている。貯蔵容器１は、固縛装置３により架台２に固縛されている。架台２は、放射性物質貯蔵施設の床面４に配置されている。 [First Embodiment]
FIG. 1 shows a part of the radioactive material storage facility. As shown in FIG. 1, the storage container 1 is arranged vertically on the gantry 2. The storage container 1 is lashed to the gantry 2 by the lashing device 3. The gantry 2 is arranged on the floor surface 4 of the radioactive material storage facility.

貯蔵容器１は、筒状の容器本体１１と、容器本体１１の側面から突出した突起１２および突起１３を有する。突起１３は、突起１２より架台２に近い。貯蔵容器１は、突起１３を用いて、固縛装置３により架台２に固縛されている。 The storage container 1 has a tubular container body 11 and protrusions 12 and 13 protruding from the side surfaces of the container body 11. The protrusion 13 is closer to the gantry 2 than the protrusion 12. The storage container 1 is lashed to the gantry 2 by the lashing device 3 using the protrusion 13.

図１には、貯蔵容器１の正面図を示しているが、貯蔵容器１の背面にも突起が形成されている。貯蔵容器１の背面でも、貯蔵容器１の正面と同様に、貯蔵容器１が、突起を用いて、固縛装置３により架台２に固縛されている。また、貯蔵容器１の左右面でも、貯蔵容器１の正面と同様に、固縛装置３により架台２に固縛されている。ただし、左右面の固縛装置３については図１では図示を省略している。なお、固縛装置３を貯蔵容器１に１対設置するか、あるいは２対設置するかは、貯蔵施設の地震動の大きさによって適宜選択される。以下において、貯蔵容器１をキャスク１と称し、突起１３をトラニオン１３と称する。 Although FIG. 1 shows a front view of the storage container 1, protrusions are also formed on the back surface of the storage container 1. On the back surface of the storage container 1, the storage container 1 is lashed to the gantry 2 by the lashing device 3 using protrusions as in the front surface of the storage container 1. Further, the left and right surfaces of the storage container 1 are also lashed to the gantry 2 by the lashing device 3 as in the front surface of the storage container 1. However, the lashing device 3 on the left and right surfaces is not shown in FIG. Whether to install one pair or two pairs of lashing devices 3 in the storage container 1 is appropriately selected depending on the magnitude of the seismic motion of the storage facility. In the following, the storage container 1 will be referred to as a cask 1, and the protrusion 13 will be referred to as a trunnion 13.

図２に、図１のIIの拡大図を示している。図３に、固縛装置３の分解図を示している。図２では、放射性物質貯蔵施設において、床面４に向かう方向を下方向とし、床面４と反対方向を上方向としている。後述の図４以降についても同様である。 FIG. 2 shows an enlarged view of FIG. 1 II. FIG. 3 shows an exploded view of the lashing device 3. In FIG. 2, in the radioactive material storage facility, the direction toward the floor surface 4 is downward, and the direction opposite to the floor surface 4 is upward. The same applies to FIGS. 4 and later described later.

固縛装置３は、図２および図３に示すように、Ｕ字状のＵ字部材２０と、第１連結部材（連結部）２１と、第１ナット２２と、第１補助固定具（補助固定具）２３と、第１座金２４と、第１ボルト（固定部）２５と、第２連結部材（連結部）２６と、第２ナット２７と、第２補助固定具（補助固定具）２８と、第２座金２９と、第２ボルト３０とを有する。 As shown in FIGS. 2 and 3, the lashing device 3 includes a U-shaped U-shaped member 20, a first connecting member (connecting portion) 21, a first nut 22, and a first auxiliary fixture (auxiliary). Fixture) 23, 1st washer 24, 1st bolt (fixing part) 25, 2nd connecting member (connecting part) 26, 2nd nut 27, 2nd auxiliary fixing tool (auxiliary fixing part) 28 And a second washer 29 and a second bolt 30.

Ｕ字部材２０は、図３に示すように、湾曲部３１と、湾曲部３１の一端から延在した第１接続部（接続部）３２と、湾曲部３１の他端から延在した第２接続部（接続部）３３とを有する。湾曲部３１は、半円弧状に湾曲している。第１接続部３２は、湾曲部３１の一端から延在している。第２接続部３３は、湾曲部３１の他端から延在している。湾曲部３１は、図２に示すように、トラニオン１３の周側面に沿って配置される。 As shown in FIG. 3, the U-shaped member 20 has a curved portion 31, a first connecting portion (connecting portion) 32 extending from one end of the curved portion 31, and a second connecting portion (connecting portion) 32 extending from the other end of the curved portion 31. It has a connecting portion (connecting portion) 33. The curved portion 31 is curved in a semicircular shape. The first connecting portion 32 extends from one end of the curved portion 31. The second connecting portion 33 extends from the other end of the curved portion 31. As shown in FIG. 2, the curved portion 31 is arranged along the peripheral side surface of the trunnion 13.

図４に、図２のIV−IV線に沿った断面図を示している。図４に示す断面図は、鉛直方向に沿い、かつトラニオン１３の中心軸Ｏ１を通る断面図である。トラニオン１３は、図２および図４に示すように、円柱部１３ａを有する。図２および図４において、中心軸Ｏ１は、円柱部１３ａの中心軸でもある。 FIG. 4 shows a cross-sectional view taken along the line IV-IV of FIG. The cross-sectional view shown in FIG. 4 is a cross-sectional view taken along the vertical direction and passing through the central axis O1 of the trunnion 13. The trunnion 13 has a cylindrical portion 13a, as shown in FIGS. 2 and 4. In FIGS. 2 and 4, the central axis O1 is also the central axis of the cylindrical portion 13a.

図２に示すように、Ｕ字部材２０の湾曲部３１は、トラニオン１３の円柱部１３ａの上側の半周側面１３ａ₁に沿って配置される。円柱部１３ａの上側の半周側面１３ａ₁とは、円柱部１３ａの中心軸Ｏ１を含む水平面ｌを境界として円柱部１３ａの周側面を上側と下側の２つの半周側面に分けた場合の上側の半周側面である。 As shown in FIG. 2, the curved portion 31 of the U-shaped member 20 is arranged along the upper half-circumferential side surface 13a ₁ of the cylindrical portion 13a of the trunnion 13. The upper half-circumferential side surface 13a ₁ of the cylindrical portion 13a is the upper half-circumferential side surface when the peripheral side surface of the cylindrical portion 13a is divided into two upper and lower half-circumferential side surfaces with the horizontal plane l including the central axis O1 of the cylindrical portion 13a as a boundary. It is a half-circle side surface.

Ｕ字部材２０の湾曲部３１が、円柱部１３ａの上側の半周側面１３ａ₁に沿って配置されるとは、湾曲部３１の内面が円柱部１３ａの上側の半周側面１３ａ₁に接するように配置されることである。湾曲部３１の内面は、湾曲部３１が円柱部１３ａに沿って配置されたとき、円柱部１３ａに対向する面である。湾曲部３１の内面が円柱部１３ａの上側の半周側面１３ａ₁に接するように配置されるとは、湾曲部３１の内面が、湾曲部３１の周方向全体に亘って、円柱部１３ａの上側の半周側面１３ａ₁に接する場合だけでなく、湾曲部３１の内面が円柱部１３ａの上側の半周側面１３ａ₁の一部と接する場合も含む。例えば、湾曲部３１の内面の半径が円柱部１３ａの半径と同じである場合又は円柱部１３ａの半径よりわずかに大きい場合のいずれの場合も、湾曲部３１の内面が円柱部１３ａの上側の半周側面１３ａ₁に接するように配置されるという。 The curved portion 31 of the U-shaped member 20 is arranged along the upper half-circumferential side surface 13a ₁ of the cylindrical portion 13a so that the inner surface of the curved portion 31 is in contact with the upper half-circumferential side surface 13a ₁ of the cylindrical portion 13a. Is to be done. The inner surface of the curved portion 31 is a surface facing the cylindrical portion 13a when the curved portion 31 is arranged along the cylindrical portion 13a. When the inner surface of the curved portion 31 is arranged so as to be in contact with the upper half peripheral side surface 13a ₁ of the cylindrical portion 13a, the inner surface of the curved portion 31 is on the upper side of the cylindrical portion 13a over the entire circumferential direction of the curved portion 31. This includes not only the case where it is in contact with the half-circumferential side surface 13a ₁ but also the case where the inner surface of the curved portion 31 is in contact with a part of the upper half-circumferential side surface 13a ₁ of the cylindrical portion 13a. For example, when the radius of the inner surface of the curved portion 31 is the same as the radius of the cylindrical portion 13a or slightly larger than the radius of the cylindrical portion 13a, the inner surface of the curved portion 31 is the upper half circumference of the cylindrical portion 13a. It is said that it is arranged so as to be in contact with the side surface 13a ₁ .

図４に示す断面図において、湾曲部３１の断面は六角形である。この断面図において、湾曲部３１の内面３１ｘは、直線である。直線の内面３１ｘが、円柱部１３ａの上側の半周側面１３ａ₁に当接している。 In the cross-sectional view shown in FIG. 4, the cross section of the curved portion 31 is a hexagon. In this cross-sectional view, the inner surface 31x of the curved portion 31 is a straight line. The inner surface 31x of the straight line is in contact with the upper half peripheral side surface 13a ₁ of the cylindrical portion 13a.

図４には、湾曲部３１がトラニオン１３の円柱部１３ａの周側面に沿って配置されたときの、鉛直方向に沿い、かつトラニオン１３の中心軸Ｏ１を通る断面図を示している。しかし、本実施形態では、湾曲部３１がトラニオン１３の円柱部１３ａの周側面に沿って配置されたときの、トラニオン１３の円柱部１３ａの径方向に沿った全ての断面視において、図４に示すように、湾曲部３１の断面は六角形であり、湾曲部３１の内面３１ｘは直線である。直線の内面３１ｘが、トラニオン１３の円柱部１３ａの上側の半周側面１３ａ₁に当接している。 FIG. 4 shows a cross-sectional view taken along the vertical direction and passing through the central axis O1 of the trunnion 13 when the curved portion 31 is arranged along the peripheral side surface of the cylindrical portion 13a of the trunnion 13. However, in the present embodiment, when the curved portion 31 is arranged along the peripheral side surface of the cylindrical portion 13a of the trunnion 13, all the cross-sectional views along the radial direction of the cylindrical portion 13a of the trunnion 13 are shown in FIG. As shown, the cross section of the curved portion 31 is hexagonal, and the inner surface 31x of the curved portion 31 is a straight line. The inner surface 31x of the straight line is in contact with the upper half-circumferential side surface 13a ₁ of the cylindrical portion 13a of the trunnion 13.

Ｕ字部材２０の一端部および他端部は、ネジである。図３には、Ｕ字部材２０の第１接続部３２の一端部および第２接続部３３の一端部が右ネジである場合を示している。Ｕ字部材２０の第１接続部３２の一端部は、右ネジあるいは左ネジのいずれであってもよい。Ｕ字部材２０の第２接続部３３の一端部は、右ネジあるいは左ネジのいずれであってもよい。 One end and the other end of the U-shaped member 20 are screws. FIG. 3 shows a case where one end of the first connecting portion 32 and one end of the second connecting portion 33 of the U-shaped member 20 are right-handed screws. One end of the first connecting portion 32 of the U-shaped member 20 may be either a right-handed screw or a left-handed screw. One end of the second connecting portion 33 of the U-shaped member 20 may be either a right-handed screw or a left-handed screw.

第１連結部材２１は、図３に示すように、筒状の部材である。第１連結部材２１の内周面にネジが形成されている。第１連結部材２１の内周面には、右ネジが形成されていてもよく、左ネジが形成されていてもよい。 As shown in FIG. 3, the first connecting member 21 is a tubular member. A screw is formed on the inner peripheral surface of the first connecting member 21. A right-handed screw may be formed or a left-handed screw may be formed on the inner peripheral surface of the first connecting member 21.

第１連結部材２１の一端部２１ｍに、Ｕ字部材２０の第１接続部３２の一端部が螺合する。第１連結部材２１の他端部２１ｎに、後述する第１ボルト２５の一端部２５ｎが螺合する（図２参照）。第１連結部材２１の一端部２１ｍは、右ネジあるいは左ネジのいずれであってもよい。第１連結部材２１の他端部２１ｎは、右ネジあるいは左ネジのいずれであってもよい。 One end of the first connecting portion 32 of the U-shaped member 20 is screwed into the one end portion 21m of the first connecting member 21. One end 25n of the first bolt 25, which will be described later, is screwed into the other end 21n of the first connecting member 21 (see FIG. 2). One end 21m of the first connecting member 21 may be either a right-handed screw or a left-handed screw. The other end 21n of the first connecting member 21 may be either a right-handed screw or a left-handed screw.

図３に示すように、Ｕ字部材２０の第１接続部３２の一端部が右ネジである場合、第１連結部材２１の一端部２１ｍの内周面に、右ネジが形成されている。 As shown in FIG. 3, when one end of the first connecting portion 32 of the U-shaped member 20 is a right-handed screw, the right-handed screw is formed on the inner peripheral surface of the one end 21 m of the first connecting member 21.

図３に示すように、第１ボルト２５の一端部２５ｎが左ネジである場合、第１連結部材２１の他端部２１ｎの内周面に、左ネジが形成されている。第１ボルト２５の一端部２５ｎは、右ネジあるいは左ネジのいずれであってもよい。 As shown in FIG. 3, when one end 25n of the first bolt 25 is a left-handed screw, a left-handed screw is formed on the inner peripheral surface of the other end 21n of the first connecting member 21. One end 25n of the first bolt 25 may be either a right-handed screw or a left-handed screw.

図２に、Ｕ字部材２０の第１接続部３２が第１連結部材２１の一端部２１ｍに螺合し、第１ボルト２５の一端部２５ｎが第１連結部材２１の他端部２１ｎに螺合した状態を示している。この状態から、第１連結部材２１を一方へ回転させると、第１連結部材２１の内側で、Ｕ字部材２０の第１接続部３２と第１ボルト２５の一端部２５ｎが近付く。第１連結部材２１を逆に回転させると、第１連結部材２１の内側で、Ｕ字部材２０の第１接続部３２と第１ボルト２５の一端部２５ｎが遠ざかる。 In FIG. 2, the first connecting portion 32 of the U-shaped member 20 is screwed into the one end portion 21m of the first connecting member 21, and the one end portion 25n of the first bolt 25 is screwed into the other end portion 21n of the first connecting member 21. It shows the matched state. When the first connecting member 21 is rotated to one side from this state, the first connecting portion 32 of the U-shaped member 20 and the one end portion 25n of the first bolt 25 come close to each other inside the first connecting member 21. When the first connecting member 21 is rotated in the opposite direction, the first connecting portion 32 of the U-shaped member 20 and the one end portion 25n of the first bolt 25 move away from each other inside the first connecting member 21.

第１ナット２２は、図２に示すように、第１連結部材２１の下方に配置されている。第１ナット２２は、第１ボルト２５に螺合している。第１ナット２２を、第１連結部材２１に向かって締め付けることにより、第１連結部材２１が回転しないようになる。 As shown in FIG. 2, the first nut 22 is arranged below the first connecting member 21. The first nut 22 is screwed into the first bolt 25. By tightening the first nut 22 toward the first connecting member 21, the first connecting member 21 does not rotate.

第１補助固定具２３は、図３に示すように、頭部４１と、軸部４２とを有する。頭部４１の最大幅Ｒ₁は、軸部４２の最大幅ｒ₁より大きい。第１補助固定具２３には、頭部４１および軸部４２を貫通した空間２３ａが形成されている。空間２３ａは、内壁２３Ａによって画定されている。空間２３ａに、後述する第１ボルト２５の棒状部５１の一部が配置される。第１補助固定具２３は、図２に示すように、架台２に固定される。 As shown in FIG. 3, the first auxiliary fixture 23 has a head portion 41 and a shaft portion 42. The maximum width R ₁ of the head 41 is larger than the maximum width r ₁ of the shaft portion 42. The first auxiliary fixture 23 is formed with a space 23a that penetrates the head portion 41 and the shaft portion 42. The space 23a is defined by the inner wall 23A. A part of the rod-shaped portion 51 of the first bolt 25, which will be described later, is arranged in the space 23a. As shown in FIG. 2, the first auxiliary fixture 23 is fixed to the gantry 2.

図５に、図２のＶの拡大図を示している。図５に示すように、架台２に、第１穴２ａが形成されている。第１穴２ａに、第１補助固定具２３の軸部４２がねじ込まれている。第１補助固定具２３の頭部４１は、第１座金２４を介して架台２の上に配置されている。第１補助固定具２３の空間２３ａに、第１ボルト２５の一部（後述する他端部２５ｍ）が配置されている。 FIG. 5 shows an enlarged view of V in FIG. As shown in FIG. 5, a first hole 2a is formed in the gantry 2. The shaft portion 42 of the first auxiliary fixture 23 is screwed into the first hole 2a. The head 41 of the first auxiliary fixture 23 is arranged on the gantry 2 via the first washer 24. A part of the first bolt 25 (the other end 25 m described later) is arranged in the space 23a of the first auxiliary fixture 23.

第１ボルト２５は、図３に示すように、棒状部５１と、幅広部５２とを有する。幅広部５２は、第１ボルト２５の先端部に形成されている。幅広部５２の最大幅Ｗ₁は、棒状部５１の最大幅ｗ₁より大きい。棒状部５１は、一端部２５ｎと他端部２５ｍとを有する。棒状部５１の他端部２５ｍは、一端部２５ｎより幅広部５２に近い。棒状部５１の一端部２５ｎは、幅広部５２と反対側に配置されている。棒状部５１の一端部２５ｎは、第１連結部材２１の他端部２１ｎに螺合するネジになっている。棒状部５１の他端部２５ｍは、第１補助固定具２３の空間２３ａに配置される。棒状部５１は、例えば、円柱状でもよく、多角柱状でもよい。幅広部５２は、平面視において、例えば、円形状でもよく、多角形状でもよい。 As shown in FIG. 3, the first bolt 25 has a rod-shaped portion 51 and a wide portion 52. The wide portion 52 is formed at the tip of the first bolt 25. The maximum width W ₁ of the wide portion 52 is larger than the maximum width w ₁ of the rod-shaped portion 51. The rod-shaped portion 51 has one end portion 25n and the other end portion 25m. The other end 25m of the rod-shaped portion 51 is closer to the wide portion 52 than the one end 25n. One end 25n of the rod-shaped portion 51 is arranged on the opposite side of the wide portion 52. One end 25n of the rod-shaped portion 51 is a screw screwed into the other end 21n of the first connecting member 21. The other end 25m of the rod-shaped portion 51 is arranged in the space 23a of the first auxiliary fixture 23. The rod-shaped portion 51 may be, for example, a columnar shape or a polygonal columnar shape. The wide portion 52 may have a circular shape or a polygonal shape in a plan view, for example.

第１補助固定具２３の空間２３ａの幅Ｓ₁は、第１ボルト２５の棒状部５１の最大幅ｗ₁よりやや大きい。空間２３ａの幅Ｓ₁は、幅広部５２の最大幅Ｗ₁より小さい。第１ボルト２５の他端部２５ｍが空間２３ａに配置されたとき、図５に示すように、他端部２５ｍと第１補助固定具２３の内壁２３Ａとの間に隙間Ｐが形成される。図５では、隙間Ｐにハッチングを付している。隙間Ｐにより、空間２３ａで、第１ボルト２５を水平方向にずらすことができる。 The width S ₁ of the space 23 a of the first auxiliary fixture 23 is slightly larger than the maximum width w ₁ of the rod-shaped portion 51 of the first bolt 25. The width S _{1 of the} space 23a is smaller than the maximum width W ₁ of the wide portion 52. When the other end 25m of the first bolt 25 is arranged in the space 23a, a gap P is formed between the other end 25m and the inner wall 23A of the first auxiliary fixture 23, as shown in FIG. In FIG. 5, the gap P is hatched. The gap P allows the first bolt 25 to be horizontally displaced in the space 23a.

また、第１ボルト２５の他端部２５ｍが空間２３ａに配置されたとき、第１ボルト２５の幅広部５２は、第１補助固定具２３の軸部４２の下に配置される。第１ボルト２５が図５中の上方向に移動した場合、幅広部５２が軸部４２に引っ掛かる。そのため、第１ボルト２５が第１補助固定具２３から抜けない。第１ボルト２５は、第１補助固定具２３を介して、架台２に固定されている。 Further, when the other end 25m of the first bolt 25 is arranged in the space 23a, the wide portion 52 of the first bolt 25 is arranged below the shaft portion 42 of the first auxiliary fixture 23. When the first bolt 25 moves upward in FIG. 5, the wide portion 52 is caught by the shaft portion 42. Therefore, the first bolt 25 cannot be removed from the first auxiliary fixture 23. The first bolt 25 is fixed to the gantry 2 via the first auxiliary fixture 23.

図３に示す第２連結部材（連結部）２６、第２ナット２７、第２補助固定具（補助固定具）２８、第２座金２９および第２ボルト（固定部）３０についても、上記第１連結部材（連結部）２１、第１ナット２２、第１補助固定具（補助固定具）２３、第１座金２４および第１ボルト（固定部）２５と同様な構成である。 The second connecting member (connecting portion) 26, the second nut 27, the second auxiliary fixing tool (auxiliary fixing tool) 28, the second washer 29, and the second bolt (fixing portion) 30 shown in FIG. It has the same configuration as the connecting member (connecting portion) 21, the first nut 22, the first auxiliary fixing tool (auxiliary fixing tool) 23, the first washer 24, and the first bolt (fixing portion) 25.

固縛装置３の材質として、例えば、炭素鋼、ステンレス鋼が挙げられる。炭素鋼として、例えば、クロムモリブデン鋼、ニッケルクロム鋼、ニッケルクロムモリブデン鋼が挙げられる。ステンレス鋼として、例えば、高強度な析出硬化系ステンレス鋼が挙げられる。 Examples of the material of the lashing device 3 include carbon steel and stainless steel. Examples of carbon steel include chrome molybdenum steel, nickel chrome steel, and nickel chrome molybdenum steel. Examples of stainless steel include high-strength precipitation hardening stainless steel.

図３に示すＵ字部材２０として、例えば、Ｕ字ボルトを用いることができる。図３に示す第１連結部材２１および第２連結部材２６として、例えば、ターンバックルを用いることができる。 As the U-shaped member 20 shown in FIG. 3, for example, a U-shaped bolt can be used. As the first connecting member 21 and the second connecting member 26 shown in FIG. 3, for example, a turnbuckle can be used.

次に、固縛装置３を用いて、キャスク１を架台２に固縛する方法を説明する。 Next, a method of tying the cask 1 to the gantry 2 by using the lashing device 3 will be described.

図６の左図に示すように、予め、第１ボルト２５を、第１補助固定具２３を介して、架台２に固定する。第１ボルト２５の上端部には、第１連結部材２１および第１ナット２２が螺合している。第１ボルト２５の下端部は、第１補助固定具２３の空間２３ａに配置されている。第１ボルト２５の幅広部５２は、第１補助固定具２３の軸部４２の下方に配置されている。幅広部５２は、軸部４２から離れている。 As shown in the left figure of FIG. 6, the first bolt 25 is fixed to the gantry 2 in advance via the first auxiliary fixture 23. A first connecting member 21 and a first nut 22 are screwed to the upper end of the first bolt 25. The lower end of the first bolt 25 is arranged in the space 23a of the first auxiliary fixture 23. The wide portion 52 of the first bolt 25 is arranged below the shaft portion 42 of the first auxiliary fixture 23. The wide portion 52 is separated from the shaft portion 42.

第２ボルト３０についても第１ボルト２５と同様に、第２補助固定具２８を介して、第２ボルト３０を架台２に固定する。第２ボルト３０の上端部に、第２連結部材２６および第２ナット２７が螺合している。 As for the second bolt 30, the second bolt 30 is fixed to the gantry 2 via the second auxiliary fixture 28 in the same manner as the first bolt 25. A second connecting member 26 and a second nut 27 are screwed to the upper end of the second bolt 30.

キャスク１を架台２の上に配置する。そして、図６の右図に示すように、Ｕ字部材２０の内面をトラニオン１３の円柱部１３ａの周側面に沿わせながら、第１連結部材２１および第２連結部材２６の上にＵ字部材２０を載せる。 Cask 1 is placed on the gantry 2. Then, as shown in the right figure of FIG. 6, the U-shaped member 20 is placed on the first connecting member 21 and the second connecting member 26 while the inner surface of the U-shaped member 20 is aligned with the peripheral side surface of the cylindrical portion 13a of the trunnion 13. Put 20 on it.

そして、Ｕ字部材２０の第１接続部３２の下端部を、第１連結部材２１の上端の開口に嵌める。Ｕ字部材２０の第２接続部３３の下端部を、第２連結部材２６の上端の開口に嵌める。このとき、キャスク１の位置ずれ等により、第１接続部３２の下端部と第１連結部材２１の上端の開口とが位置ずれしていることがある。この場合、第１連結部材２１を水平方向にずらすことにより、第１接続部３２の下端部と第１連結部材２１の上端の開口の位置を合わせることができる。第２接続部３３の下端部と第２連結部材２６の上端の開口の位置がずれている場合、第２連結部材２６を水平方向にずらすことにより、第２接続部３３の下端部と第２連結部材２６の上端の開口の位置を合わせることができる。 Then, the lower end of the first connecting portion 32 of the U-shaped member 20 is fitted into the opening of the upper end of the first connecting member 21. The lower end of the second connecting portion 33 of the U-shaped member 20 is fitted into the opening at the upper end of the second connecting member 26. At this time, the lower end portion of the first connecting portion 32 and the opening at the upper end of the first connecting member 21 may be misaligned due to the misalignment of the cask 1. In this case, by shifting the first connecting member 21 in the horizontal direction, the positions of the lower end of the first connecting portion 32 and the opening of the upper end of the first connecting member 21 can be aligned. When the lower end of the second connecting portion 33 and the opening of the upper end of the second connecting member 26 are misaligned, the lower end of the second connecting portion 33 and the second by shifting the second connecting member 26 in the horizontal direction. The position of the opening at the upper end of the connecting member 26 can be aligned.

次に、図７の左図に示すように、第１連結部材２１と第２連結部材２６を回転させる。これにより、Ｕ字部材２０が下降するとともに、第１ボルト２５および第２ボルト３０が上昇する。 Next, as shown in the left figure of FIG. 7, the first connecting member 21 and the second connecting member 26 are rotated. As a result, the U-shaped member 20 is lowered, and the first bolt 25 and the second bolt 30 are raised.

第１連結部材２１と第２連結部材２６をさらに回転させると、Ｕ字部材２０がさらに下降し、図７の右図に示すように、Ｕ字部材２０の湾曲部３１が、トラニオン１３の円柱部１３ａの上側の半周側面１３ａ₁に沿って配置される。第１連結部材２１と第２連結部材２６をさらに回転させると、Ｕ字部材２０が、トラニオン１３の円柱部１３ａを、上方から締付ける。このとき、Ｕ字部材２０に、曲げモーメントが生じない。 When the first connecting member 21 and the second connecting member 26 are further rotated, the U-shaped member 20 is further lowered, and as shown in the right figure of FIG. 7, the curved portion 31 of the U-shaped member 20 is a cylinder of the trunnion 13. It is arranged along the upper half-circumferential side surface 13a ₁ of the portion 13a. When the first connecting member 21 and the second connecting member 26 are further rotated, the U-shaped member 20 tightens the cylindrical portion 13a of the trunnion 13 from above. At this time, no bending moment is generated in the U-shaped member 20.

第１連結部材２１と第２連結部材２６を回転させることにより、第１ボルト２５および第２ボルト３０は上昇し、第１ボルト２５の幅広部５２が、第１補助固定具２３の軸部４２に引っ掛かる。第２ボルト３０についても、第１ボルト２５と同様に、幅広部が第２補助固定具２８に引っ掛かる。 By rotating the first connecting member 21 and the second connecting member 26, the first bolt 25 and the second bolt 30 are raised, and the wide portion 52 of the first bolt 25 becomes the shaft portion 42 of the first auxiliary fixture 23. Get caught in. As with the first bolt 25, the wide portion of the second bolt 30 is hooked on the second auxiliary fixture 28.

この状態で、第１ナット２２および第２ナット２７を締付ける。これにより、第１連結部材２１および第２連結部材２６が回転しないようになる。 In this state, the first nut 22 and the second nut 27 are tightened. As a result, the first connecting member 21 and the second connecting member 26 are prevented from rotating.

以上のように、本実施形態によると以下の効果を奏する。
固縛装置３において、図２および図３に示すように、Ｕ字部材２０の湾曲部３１が、トラニオン１３の円柱部１３ａの上側の半周側面１３ａ₁に沿って湾曲している。また、Ｕ字部材２０の湾曲部３１の内面が、トラニオン１３の円柱部１３ａの上側の半周側面１３ａ₁に沿って配置される。これにより、Ｕ字部材２０により、トラニオン１３の円柱部１３ａを上方から締付けたとき、Ｕ字部材２０に曲げモーメントが生じない。そのため、Ｕ字部材２０に曲げ応力が生じない。したがって、Ｕ字部材２０を、図１２に示す従来のトラニオン固定金具６０１のように大型化させる必要がない。そのため、小型のＵ字部材２０とすることができる。これにより、Ｕ字部材２０を含む固縛装置３も小型にすることができる。 As described above, according to the present embodiment, the following effects are obtained.
In the lashing device 3, as shown in FIGS. 2 and 3, the curved portion 31 of the U-shaped member 20 is curved along the upper half-circumferential side surface 13a ₁ of the cylindrical portion 13a of the trunnion 13. Further, the inner surface of the curved portion 31 of the U-shaped member 20 is arranged along the upper half-circumferential side surface 13a ₁ of the cylindrical portion 13a of the trunnion 13. As a result, when the cylindrical portion 13a of the trunnion 13 is tightened from above by the U-shaped member 20, no bending moment is generated in the U-shaped member 20. Therefore, no bending stress is generated in the U-shaped member 20. Therefore, it is not necessary to increase the size of the U-shaped member 20 as in the conventional trunnion fixing bracket 601 shown in FIG. Therefore, it is possible to make a small U-shaped member 20. As a result, the lashing device 3 including the U-shaped member 20 can also be made smaller.

なお、Ｕ字部材２０の湾曲部３１の内面が、トラニオン１３の円柱部１３ａの上側の半周側面１３ａ₁に沿って配置された状態で、Ｕ字部材２０の第１接続部３２および第２接続部３３が下方へ引っ張られたとき、Ｕ字部材２０の湾曲部３１に、引張応力が生じる。しかし、上記で例示したＵ字部材２０の材質は、引張応力に強い材料を用いるため、Ｕ字部材２０を太くする必要がない。 The inner surface of the curved portion 31 of the U-shaped member 20 is arranged along the upper half-circumferential side surface 13a ₁ of the cylindrical portion 13a of the trunnion 13, and the first connection portion 32 and the second connection of the U-shaped member 20 are connected. When the portion 33 is pulled downward, a tensile stress is generated in the curved portion 31 of the U-shaped member 20. However, since the material of the U-shaped member 20 exemplified above is a material resistant to tensile stress, it is not necessary to make the U-shaped member 20 thicker.

また、固縛装置３が、図３に示すように、Ｕ字部材２０、第１連結部材（連結部）２１、第１ボルト２５、第２連結部材２６、第２ボルト３０等に分割された固定具を有する。固定具が複数の部材に分割されていることにより、各部材が取扱いやすい重量になる。そのため、固縛装置３を取り扱いやすい。 Further, as shown in FIG. 3, the lashing device 3 is divided into a U-shaped member 20, a first connecting member (connecting portion) 21, a first bolt 25, a second connecting member 26, a second bolt 30, and the like. Has a fixture. Since the fixture is divided into a plurality of members, each member has a weight that is easy to handle. Therefore, the lashing device 3 is easy to handle.

また、図７に示すように、第１連結部材２１および第２連結部材２６を回転させることによって、Ｕ字部材２０により、トラニオン１３の円柱部１３ａを、上方から所定の締付力で締付けることができる。所定の締付力とは、例えば、キャスク１が倒れないように、キャスク１を架台２に固縛することが可能な締付力である。このように、第１連結部材２１および第２連結部材２６を回転させるという簡易な構成で、トラニオン１３の円柱部１３ａを締付けることができる。 Further, as shown in FIG. 7, by rotating the first connecting member 21 and the second connecting member 26, the U-shaped member 20 tightens the cylindrical portion 13a of the trunnion 13 with a predetermined tightening force from above. Can be done. The predetermined tightening force is, for example, a tightening force capable of fixing the cask 1 to the gantry 2 so that the cask 1 does not fall. In this way, the cylindrical portion 13a of the trunnion 13 can be tightened with a simple configuration in which the first connecting member 21 and the second connecting member 26 are rotated.

また、図５に示すように、第１ボルト２５の他端部２５ｍが、第１補助固定具２３の空間２３ａに配置されたとき、第１ボルト２５の他端部２５ｍと第１補助固定具２３の内壁２３Ａとの間に隙間Ｐが形成される。これにより、第１ボルト２５の他端部２５ｍを、空間２３ａで、水平方向にずらすことができる。図２に示す第２ボルト３０についても同様に、水平方向にずらすことができる。 Further, as shown in FIG. 5, when the other end 25 m of the first bolt 25 is arranged in the space 23a of the first auxiliary fixture 23, the other end 25 m of the first bolt 25 and the first auxiliary fixture 23 A gap P is formed between the inner wall 23 and the inner wall 23A. As a result, the other end 25m of the first bolt 25 can be shifted in the horizontal direction in the space 23a. Similarly, the second bolt 30 shown in FIG. 2 can be shifted in the horizontal direction.

上記により、図６の右図に示すように、キャスク１の位置ずれ等により、第１接続部３２の下端部と第１連結部材２１の上端の開口の位置がずれている場合、第１ボルト２５に螺合した第１連結部材２１を水平方向にずらすことにより、第１接続部３２の下端部と第１連結部材２１の上端の開口の位置を合わせることができる。第２接続部３３の下端部と第２連結部材２６の上端の開口の位置がずれている場合、第２ボルト３０に接続した第２連結部材２６を水平方向にずらすことにより、第２接続部３３の下端部と第２連結部材２６の上端の開口の位置を合わせることができる。図５に示す隙間Ｐは、例えば、キャスク１を架台２に配置するときの位置精度から予測しうる許容幅と同等或いはこの許容幅より若干大きくすることが好ましい。 As a result of the above, as shown in the right figure of FIG. 6, when the lower end of the first connecting portion 32 and the opening of the upper end of the first connecting member 21 are misaligned due to the misalignment of the cask 1, the first bolt By shifting the first connecting member 21 screwed into the 25 in the horizontal direction, the positions of the lower end of the first connecting portion 32 and the opening of the upper end of the first connecting member 21 can be aligned. When the lower end of the second connecting portion 33 and the opening of the upper end of the second connecting member 26 are misaligned, the second connecting portion 26 connected to the second bolt 30 is displaced in the horizontal direction to form the second connecting portion. The lower end of 33 and the opening of the upper end of the second connecting member 26 can be aligned. The gap P shown in FIG. 5 is preferably equal to or slightly larger than the permissible width that can be predicted from the position accuracy when the cask 1 is arranged on the gantry 2.

また、図２に示すように、Ｕ字部材２０の湾曲部３１がトラニオン１３の円柱部１３ａの上側の半周側面１３ａ₁に沿って配置されたとき、図４に示すように、トラニオン１３の円柱部１３ａの径方向に沿った断面視において、湾曲部３１が六角形である。また、この断面視において、湾曲部３１の内面３１ｘが直線である。直線の内面３１ｘが、円柱部１３ａの上側の半周側面１３ａ₁に当接している。湾曲部３１の内面３１ｘが直線である場合、湾曲部３１の内面３１ｘが湾曲している場合より、内面３１ｘが円柱部１３ａの上側の半周側面１３ａ₁に接触する面積が大きい。これにより、円柱部１３ａにおいて、湾曲部３１の締付力が分散されやすい。言い換えると、湾曲部３１の締付力が、円柱部１３ａの特定の箇所に集中しにくい。そのため、キャスク１をより安定して固縛することができる。 Further, as shown in FIG. 2, when the curved portion 31 of the U-shaped member 20 is arranged along the upper half-circumferential side surface 13a ₁ of the cylindrical portion 13a of the trunnion 13, as shown in FIG. 4, the cylindrical portion of the trunnion 13 The curved portion 31 is hexagonal in a cross-sectional view along the radial direction of the portion 13a. Further, in this cross-sectional view, the inner surface 31x of the curved portion 31 is a straight line. The inner surface 31x of the straight line is in contact with the upper half peripheral side surface 13a ₁ of the cylindrical portion 13a. When the inner surface 31x of the curved portion 31 is straight, the area where the inner surface 31x contacts the upper half peripheral side surface 13a ₁ of the cylindrical portion 13a is larger than that when the inner surface 31x of the curved portion 31 is curved. As a result, the tightening force of the curved portion 31 is easily dispersed in the cylindrical portion 13a. In other words, the tightening force of the curved portion 31 is unlikely to be concentrated on a specific portion of the cylindrical portion 13a. Therefore, the cask 1 can be fixed more stably.

本発明における固定具は、本実施形態において、Ｕ字部材２０、第１連結部材２１、第１ナット２２、第１ボルト２５、第２連結部材２６、第２ナット２７および第２ボルト３０である。また、本発明において、湾曲部３１の一端から延在した延在部は、本実施形態において、第１接続部３２、第１連結部材２１および第１ボルト２５である。本発明において、湾曲部３１の他端から延在した延在部は、本実施形態において、第２接続部３３、第２連結部材２６および第２ボルト３０である。 In the present embodiment, the fixtures in the present invention are the U-shaped member 20, the first connecting member 21, the first nut 22, the first bolt 25, the second connecting member 26, the second nut 27, and the second bolt 30. .. Further, in the present invention, the extending portion extending from one end of the curved portion 31 is the first connecting portion 32, the first connecting member 21, and the first bolt 25 in the present embodiment. In the present invention, the extending portion extending from the other end of the curved portion 31 is the second connecting portion 33, the second connecting member 26, and the second bolt 30 in the present invention.

〔第２実施形態〕
次に、本発明の第２実施形態について、図８および図９を参照しつつ説明する。第２実施形態において第１実施形態と異なる点は、固縛装置１０３が、Ｕ字部材２０を保持可能な治具１０１を備える点である。なお、上述した第１実施形態と同一の構成については同一の符号を用い、その説明を適宜省略する。 [Second Embodiment]
Next, the second embodiment of the present invention will be described with reference to FIGS. 8 and 9. The difference between the second embodiment and the first embodiment is that the lashing device 103 includes a jig 101 capable of holding the U-shaped member 20. The same reference numerals are used for the same configurations as those in the first embodiment described above, and the description thereof will be omitted as appropriate.

図８に示すように、治具１０１は、回転台１１１と、回転軸１１２と、固定部１１３とを有する。固定部１１３は、第１連結部材２１および図示しない第２連結部材２６に取り付けられている。固定部１１３は、第１連結部材２１および図示しない第２連結部材２６に着脱可能である。 As shown in FIG. 8, the jig 101 has a turntable 111, a rotary shaft 112, and a fixing portion 113. The fixing portion 113 is attached to a first connecting member 21 and a second connecting member 26 (not shown). The fixing portion 113 is removable from the first connecting member 21 and the second connecting member 26 (not shown).

回転台１１１は、Ｕ字部材２０を保持可能である。回転台１１１は、回転軸１１２を中心に回転する。 The turntable 111 can hold the U-shaped member 20. The turntable 111 rotates about the rotation shaft 112.

図８に示すように、Ｕ字部材２０が回転台１１１の上に配置される。この状態で、回転台１１１を直接手で動かすことにより、回転台１１１をキャスク１と対向するまで回転させる（図８参照）。これにより、Ｕ字部材２０が、直立した状態で、第１連結部材２１および図示しない第２連結部材２６に載る。その後は、第１実施形態と同様な方法により、キャスク１を架台２に固縛する。Ｕ字部材２０を第１連結部材２１および第２連結部材２６に載せた後、治具１０１を、第１連結部材２１および図示しない第２連結部材２６から取り外す。 As shown in FIG. 8, the U-shaped member 20 is arranged on the turntable 111. In this state, by directly moving the turntable 111 by hand, the turntable 111 is rotated until it faces the cask 1 (see FIG. 8). As a result, the U-shaped member 20 is placed on the first connecting member 21 and the second connecting member 26 (not shown) in an upright state. After that, the cask 1 is fixed to the gantry 2 by the same method as in the first embodiment. After mounting the U-shaped member 20 on the first connecting member 21 and the second connecting member 26, the jig 101 is removed from the first connecting member 21 and the second connecting member 26 (not shown).

固定部１１３は、例えば、第１連結部材２１の側部に沿って湾曲し、第１連結部材２１の側部に取り付けられるカバー部材を有していてもよい。固定部１１３は、例えば、第２連結部材２６の側部に沿って湾曲し、第２連結部材２６の側部に取り付けられるカバー部材を有していてもよい。固定部１１３は、例えば、第１連結部材２１の側部に取り付けられた状態で、第１連結部材２１の側部の周方向に回転可能であってもよい。固定部１１３は、例えば、第１連結部材２１の側部に取り付けられた状態で、第１連結部材２１の側部の周方向に回転可能であってもよい。 The fixing portion 113 may have, for example, a cover member that is curved along the side portion of the first connecting member 21 and is attached to the side portion of the first connecting member 21. The fixing portion 113 may have, for example, a cover member that is curved along the side portion of the second connecting member 26 and is attached to the side portion of the second connecting member 26. The fixing portion 113 may be rotatable in the circumferential direction of the side portion of the first connecting member 21, for example, in a state of being attached to the side portion of the first connecting member 21. The fixing portion 113 may be rotatable in the circumferential direction of the side portion of the first connecting member 21, for example, in a state of being attached to the side portion of the first connecting member 21.

また、上記では、回転台１１１を直接手で動かしたが、回転台１１１を動かす方法は、これに限られない。例えば、回転軸１１２が図示しない駆動装置に接続され、駆動装置により回転軸１１２を回転させることによって、回転台１１１を動かしてもよい。この場合、圧縮空気による駆動装置で回転軸１１２を回転させてもよい。また、回転軸１１２が駆動装置のモータに接続され、モータにより回転軸１１２を回転させてもよい。さらに、回転軸１１２にハンドルが接続され、ハンドルを操作することにより、回転軸１１２が回転してもよい。 Further, in the above, the turntable 111 is moved directly by hand, but the method of moving the turntable 111 is not limited to this. For example, the rotating table 111 may be moved by connecting the rotating shaft 112 to a driving device (not shown) and rotating the rotating shaft 112 by the driving device. In this case, the rotating shaft 112 may be rotated by a drive device using compressed air. Further, the rotating shaft 112 may be connected to the motor of the drive device, and the rotating shaft 112 may be rotated by the motor. Further, the rotating shaft 112 may be rotated by connecting the handle to the rotating shaft 112 and operating the handle.

以上のように、第２実施形態の固縛装置１０３は、第１実施形態の固縛装置３と同様に、小型の固縛装置である。また、治具１０１を用いることにより、トラニオン１３の前方から、Ｕ字部材２０を、第１連結部材２１および第２連結部材２６に載せることができる。これにより、Ｕ字部材２０の設置作業を短時間で効率良く行える。 As described above, the lashing device 103 of the second embodiment is a small lashing device like the lashing device 3 of the first embodiment. Further, by using the jig 101, the U-shaped member 20 can be mounted on the first connecting member 21 and the second connecting member 26 from the front of the trunnion 13. As a result, the installation work of the U-shaped member 20 can be performed efficiently in a short time.

以上、本発明の実施形態について図面に基づいて説明したが、具体的な構成は、これらの実施形態に限定されるものでないと考えられるべきである。本発明の範囲は上記した説明ではなくて特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内でのすべての変更が含まれる。 Although the embodiments of the present invention have been described above with reference to the drawings, it should be considered that the specific configuration is not limited to these embodiments. The scope of the present invention is shown by the scope of claims rather than the above description, and includes all modifications within the meaning and scope equivalent to the scope of claims.

例えば、上記第１実施形態および第２実施形態では、固縛装置３が、図３に示すように、Ｕ字部材２０、第１連結部材（連結部）２１、第１ボルト２５、第２連結部材２６、第２ボルト３０等の複数の部材に分割されている。しかし、固縛装置３は、複数の部材に分割されていなくてもよい。 For example, in the first embodiment and the second embodiment, as shown in FIG. 3, the lashing device 3 has a U-shaped member 20, a first connecting member (connecting portion) 21, a first bolt 25, and a second connecting. It is divided into a plurality of members such as a member 26 and a second bolt 30. However, the lashing device 3 does not have to be divided into a plurality of members.

また、上記第１実施形態および第２実施形態では、図３に示すように、Ｕ字部材２０の第１接続部３２が第１連結部材２１の一端部２１ｍに螺合し、第１ボルト２５が第１連結部材２１の他端部２１ｎに螺合することにより、Ｕ字部材２０の第１接続部３２と第１ボルト２５とが連結される（図２参照）。第１連結部材２１として、例えば、ターンバックルが用いられる。しかし、Ｕ字部材２０の第１接続部３２と第１ボルト２５を連結する構成は、上記構成に限られない。例えば、Ｕ字部材２０の第１接続部３２と第１ボルト２５が直接接続されていてもよい。Ｕ字部材２０の第１接続部３２と第１ボルト２５とが、ターンバックル以外の部材で接続されていてもよい。また、第１接続部３２および第１ボルト２５の一方が第１連結部材２１に回転自由な状態で予め組み込まれ、他方を第１連結部材２１に螺合させてもよい。さらに、第１接続部３２および第１ボルト２５がそれぞれ第１連結部材２１の一端部および他端部に回転自由な状態で組み込まれていてもよい。Ｕ字部材２０の第２接続部３３、第２連結部材２６および第２ボルト３０についても同様である。 Further, in the first embodiment and the second embodiment, as shown in FIG. 3, the first connecting portion 32 of the U-shaped member 20 is screwed into the one end portion 21m of the first connecting member 21, and the first bolt 25 Is screwed into the other end 21n of the first connecting member 21, so that the first connecting portion 32 of the U-shaped member 20 and the first bolt 25 are connected (see FIG. 2). As the first connecting member 21, for example, a turnbuckle is used. However, the configuration for connecting the first connecting portion 32 of the U-shaped member 20 and the first bolt 25 is not limited to the above configuration. For example, the first connecting portion 32 of the U-shaped member 20 and the first bolt 25 may be directly connected. The first connecting portion 32 of the U-shaped member 20 and the first bolt 25 may be connected by a member other than the turnbuckle. Further, one of the first connecting portion 32 and the first bolt 25 may be preliminarily incorporated into the first connecting member 21 in a freely rotatable state, and the other may be screwed into the first connecting member 21. Further, the first connecting portion 32 and the first bolt 25 may be incorporated into one end and the other end of the first connecting member 21 in a freely rotatable state, respectively. The same applies to the second connecting portion 33, the second connecting member 26, and the second bolt 30 of the U-shaped member 20.

また、上記第１実施形態および第２実施形態では、図２に示すように、第１ボルト２５が第１補助固定具２３を介して架台２に固定されている。第２ボルト３０が第２補助固定具２８を介して架台２に固定されている。しかし、第１ボルト２５および第２ボルト３０は、架台２に直接固定されていてもよい。例えば、第１ボルト２５および第２ボルト３０が、架台２にねじ込まれてもよい。 Further, in the first embodiment and the second embodiment, as shown in FIG. 2, the first bolt 25 is fixed to the gantry 2 via the first auxiliary fixture 23. The second bolt 30 is fixed to the gantry 2 via the second auxiliary fixture 28. However, the first bolt 25 and the second bolt 30 may be directly fixed to the gantry 2. For example, the first bolt 25 and the second bolt 30 may be screwed into the gantry 2.

上記第１実施形態および第２実施形態では、図４に示すように、トラニオン１３の円柱部１３ａの径方向に沿った断面視において、湾曲部３１は六角形である。しかし、上記断面視において、湾曲部は六角形でなくてもよい。例えば、上記断面視において、湾曲部は六角形以外の多角形でもよい。上記断面視において、湾曲部は円形又は楕円形でもよい。図１０に示すように、トラニオン１３の円柱部１３ａの径方向に沿った断面視において、円柱部１３ａの上側の半周側面１３ａ₁に当接する湾曲部２３１の内面２３１ｘは直線であるが、湾曲部２３１の内面２３１ｘ以外の部分は湾曲していてもよい。 In the first embodiment and the second embodiment, as shown in FIG. 4, the curved portion 31 is hexagonal in the cross-sectional view of the cylindrical portion 13a of the trunnion 13 along the radial direction. However, in the above cross-sectional view, the curved portion does not have to be hexagonal. For example, in the above cross-sectional view, the curved portion may be a polygon other than a hexagon. In the above cross-sectional view, the curved portion may be circular or elliptical. As shown in FIG. 10, in a cross-sectional view of the columnar portion 13a of the trunnion 13 along the radial direction, the inner surface 231x of the curved portion 231 that abuts on the upper half-circumferential side surface 13a ₁ of the cylindrical portion 13a is a straight line, but the curved portion. The portion of the inner surface of the 231 other than the inner surface 231x may be curved.

また、上記第１実施形態および第２実施形態では、図４に示すように、トラニオン１３の円柱部１３ａの径方向に沿った断面視において、円柱部１３ａの上側の半周側面１３ａ₁に当接する湾曲部３１の内面３１ｘが直線である。しかし、上記断面視において、円柱部１３ａの周側面に当接する湾曲部３１の内面は直線でなくてもよい。例えば、図１１に示すように、トラニオン１３の円柱部１３ａの径方向に沿った断面視において、湾曲部３３１が円形であり、円柱部１３ａの周側面に対向する湾曲部３３１の内面３３１ｘが、円柱部１３ａに向かって凸に湾曲していてもよい。この湾曲した内面３３１ｘが、円柱部１３ａの周側面に当接してもよい。 Further, in the first embodiment and the second embodiment, as shown in FIG. 4, the trunnion 13 abuts on the upper half-circumferential side surface 13a ₁ of the cylindrical portion 13a in a cross-sectional view along the radial direction. The inner surface 31x of the curved portion 31 is a straight line. However, in the cross-sectional view, the inner surface of the curved portion 31 that abuts on the peripheral side surface of the cylindrical portion 13a does not have to be a straight line. For example, as shown in FIG. 11, in a cross-sectional view along the radial direction of the cylindrical portion 13a of the trunnion 13, the curved portion 331 is circular, and the inner surface 331x of the curved portion 331 facing the peripheral side surface of the cylindrical portion 13a is formed. It may be curved convexly toward the cylindrical portion 13a. The curved inner surface 331x may abut on the peripheral side surface of the cylindrical portion 13a.

また、上記第１実施形態および第２実施形態では、固縛装置３が、図３に示すように、第１ナット２２および第２ナット２７を有する。第１ナット２２は、図２に示すように、第１連結部材２１の下方に配置され、第２ナット２７は、第２連結部材２６の下方に配置されている。しかし、固縛装置３は、第１ナット２２および第２ナット２７を有さなくてもよい。また、固縛装置３が第１ナット２２を有する場合、第１ナット２２は、第１連結部材２１の上方に配置されてもよい。固縛装置が第２ナット２７を有する場合、第２ナット２７は、第２連結部材２６の上方に配置されてもよい。さらに、第１連結部材２１の上下両方にナットを配置してもよい。第２連結部材２６の上下両方にナットを配置してもよい。 Further, in the first embodiment and the second embodiment, the lashing device 3 has a first nut 22 and a second nut 27 as shown in FIG. As shown in FIG. 2, the first nut 22 is arranged below the first connecting member 21, and the second nut 27 is arranged below the second connecting member 26. However, the lashing device 3 does not have to have the first nut 22 and the second nut 27. Further, when the lashing device 3 has the first nut 22, the first nut 22 may be arranged above the first connecting member 21. If the lashing device has a second nut 27, the second nut 27 may be located above the second connecting member 26. Further, nuts may be arranged both above and below the first connecting member 21. Nuts may be arranged both above and below the second connecting member 26.

また、上記第１実施形態および第２実施形態では、図２および図４に示すように、トラニオン１３が円柱部１３ａを有する。しかし、トラニオン１３は、円柱部１３ａを有さなくてもよい。例えば、トラニオンは、多角柱部を有してもよい。この場合、固縛装置は、トラニオンの多角柱部の上側の周側面に沿って配置される湾曲部を有する。この湾曲部は、トラニオンの多角柱部の周側面に沿って湾曲している。この湾曲部の内面は、トラニオンの多角柱部の上側の半周側面に接するように曲がっている。 Further, in the first embodiment and the second embodiment, as shown in FIGS. 2 and 4, the trunnion 13 has a cylindrical portion 13a. However, the trunnion 13 does not have to have the cylindrical portion 13a. For example, the trunnion may have a polygonal prism. In this case, the lashing device has a curved portion arranged along the upper peripheral side surface of the trunnion polygonal prism portion. This curved portion is curved along the peripheral side surface of the polygonal prism portion of the trunnion. The inner surface of this curved portion is bent so as to be in contact with the upper half-circumferential side surface of the polygonal prism portion of the trunnion.

また、上記では、キャスク１が架台２に固縛される場合について説明した。しかし、キャスク１が放射性物質貯蔵施設の床面４に配置され、本発明の固縛装置により、キャスク１が放射性物質貯蔵施設の床面４に固縛されてもよい。 Further, in the above, the case where the cask 1 is fixed to the gantry 2 has been described. However, the cask 1 may be arranged on the floor surface 4 of the radioactive material storage facility, and the cask 1 may be fixed to the floor surface 4 of the radioactive material storage facility by the lashing device of the present invention.

１ 貯蔵容器（キャスク）
２ 架台
３、１０３ 固縛装置
４ 床面
１１ 容器本体
１２、１３ 突起（トラニオン）
１３ａ 円柱部
１３ａ₁ 上側の半周側面
２０ Ｕ字部材
２１ 第１連結部材（連結部）
２２ 第１ナット
２３ 第１補助固定具（補助固定具）
２３ａ 空間
２３Ａ 内壁
２４ 第１座金
２５ 第１ボルト（固定部）
２６ 第２連結部材（連結部）
２７ 第２ナット
２８ 第２補助固定具（補助固定具）
２９ 第２座金
３０ 第２ボルト
３１、３３１ 湾曲部
３１ｘ、２３１ｘ、３３１ｘ 内面
３２ 第１接続部（接続部）
３３ 第２接続部（接続部）
１０１ 治具
１１１ 回転台
１１２ 回転軸
１１３ 固定台
Ｐ 隙間 1 Storage container (cask)
2 Stand 3,103 Fastening device 4 Floor surface 11 Container body 12, 13 Protrusion (trunnion)
13a Cylindrical part 13a ₁ Upper half-circumferential side surface 20 U-shaped member 21 First connecting member (connecting part)
22 1st nut 23 1st auxiliary fixture (auxiliary fixture)
23a Space 23A Inner wall 24 1st washer 25 1st bolt (fixed part)
26 Second connecting member (connecting part)
27 2nd nut 28 2nd auxiliary fixture (auxiliary fixture)
29 2nd washer 30 2nd bolt 31,333 Curved part 31x, 231x, 331x Inner surface 32 1st connection part (connection part)
33 Second connection (connection)
101 Jig 111 Rotating table 112 Rotating shaft 113 Fixed table P Gap

Claims (7)

放射性物質が収容される筒状の容器本体と、前記容器本体の側面から突出した突起とを有する貯蔵容器を、縦置きにした状態で、放射性物質貯蔵施設の床面或いは貯蔵架台に固縛する固縛装置であって、
前記突起の周側面に沿って配置され、前記突起の周側面に沿って湾曲した湾曲部と、
前記湾曲部の両端のそれぞれから延在し、放射性物質貯蔵施設の床面或いは貯蔵架台に固定される延在部と、
を有する固定具を備えることを特徴とする放射性物質貯蔵容器の固縛装置。 A storage container having a tubular container body for storing radioactive substances and a protrusion protruding from the side surface of the container body is fixed to the floor surface or storage stand of the radioactive material storage facility in a vertically placed state. It ’s a lashing device,
A curved portion arranged along the peripheral side surface of the protrusion and curved along the peripheral side surface of the protrusion,
An extending portion extending from each of both ends of the curved portion and fixed to the floor surface or a storage stand of the radioactive material storage facility,
A device for lashing a radioactive material storage container, which comprises a fixture having a. 前記延在部は、
前記湾曲部の端から延在した接続部と、
前記接続部から分離可能であり、放射性物質貯蔵施設の床面或いは貯蔵架台に固定される固定部と、
前記接続部と前記固定部を連結する連結部と、
を有することを特徴とする請求項１に記載の固縛装置。 The extending part is
A connection portion extending from the end of the curved portion and a connection portion
A fixed part that is separable from the connection part and is fixed to the floor surface or storage stand of the radioactive material storage facility,
A connecting portion that connects the connecting portion and the fixing portion,
The lashing device according to claim 1, wherein the device is characterized by having. 前記連結部は筒状であり、
前記連結部の内周面にネジが形成され、
前記連結部は、前記接続部および前記固定部の少なくとも一方を螺合することを特徴とする請求項２に記載の固縛装置。 The connecting portion has a tubular shape.
A screw is formed on the inner peripheral surface of the connecting portion.
The lashing device according to claim 2, wherein the connecting portion screwes at least one of the connecting portion and the fixing portion. 前記延在部の一端部が配置される空間が形成された補助固定具を備え、
前記補助固定具は、放射性物質貯蔵施設の床面或いは貯蔵架台に固定され、
前記延在部の一端部が前記空間に配置されたとき、前記延在部の一端部と前記補助固定具の前記空間を画定する内壁との間に隙間が形成されることを特徴とする請求項１〜３のいずれか１項に記載の固縛装置。 An auxiliary fixture having a space in which one end of the extending portion is arranged is provided.
The auxiliary fixture is fixed to the floor surface or storage stand of the radioactive material storage facility, and is fixed.
A claim characterized in that, when one end of the extending portion is arranged in the space, a gap is formed between one end of the extending portion and an inner wall defining the space of the auxiliary fixture. Item 3. The lashing device according to any one of Items 1 to 3. 前記突起が円柱部を有し、
前記湾曲部が前記円柱部の周側面に沿って配置されたとき、前記円柱部の径方向に沿った断面視において、前記周側面に当接する前記湾曲部の内面が直線であることを特徴とする請求項１〜４のいずれか１項に記載の固縛装置。 The protrusion has a cylindrical portion and has a cylindrical portion.
When the curved portion is arranged along the peripheral side surface of the cylindrical portion, the inner surface of the curved portion that abuts on the peripheral side surface is a straight line in a cross-sectional view along the radial direction of the cylindrical portion. The lashing device according to any one of claims 1 to 4. 前記固定具はＵ字状であることを特徴とする請求項１〜５のいずれか１項に記載の固縛装置。 The lashing device according to any one of claims 1 to 5, wherein the fixture is U-shaped. 前記湾曲部を保持可能な治具を備え、
前記治具は、前記突起に近付くように可動することを特徴とする請求項１〜６のいずれか１項に記載の固縛装置。 A jig capable of holding the curved portion is provided.
The lashing device according to any one of claims 1 to 6, wherein the jig is movable so as to approach the protrusion.

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