JPS6326439A - Shock absorber - Google Patents
Shock absorberInfo
- Publication number
- JPS6326439A JPS6326439A JP61167633A JP16763386A JPS6326439A JP S6326439 A JPS6326439 A JP S6326439A JP 61167633 A JP61167633 A JP 61167633A JP 16763386 A JP16763386 A JP 16763386A JP S6326439 A JPS6326439 A JP S6326439A
- Authority
- JP
- Japan
- Prior art keywords
- canister
- shock absorber
- hollow
- substrate
- shock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000035939 shock Effects 0.000 title claims abstract description 31
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 19
- 239000000758 substrate Substances 0.000 claims description 14
- 239000012857 radioactive material Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003758 nuclear fuel Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000020991 processed meat Nutrition 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 239000002901 radioactive waste Substances 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000002915 spent fuel radioactive waste Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、核燃料輸送装置（キャスク）や放射性廃棄物
を収容した容器（キャニスタ）などが落下した時の衝撃
を緩衝するための緩衝装置に関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a shock absorbing device for absorbing the impact when a nuclear fuel transport device (cask) or a container containing radioactive waste (canister) falls. It is something.
（従来技術）
近年、原子力施設や使用済燃料の再処理施設等において
は放射性物質を含む廃ＴＪ！物、あるいは放射性物質に
て汚染された廃棄物など、放射性を有する物質が多量に
排出されている。これらは処理施設などで減容や固化な
どの処理が施されて容器（キャニスタ）に収納され、し
かるべき場所で貯蔵や処分をされることになる。(Prior art) In recent years, nuclear power facilities and spent fuel reprocessing facilities are producing waste TJ containing radioactive materials! A large amount of radioactive materials are being discharged, such as waste products or waste contaminated with radioactive materials. These are subjected to processing such as volume reduction and solidification at processing facilities, etc., then stored in containers (canisters), and then stored and disposed of at appropriate locations.
したがって、これらの放射性物質を処理施設へ輸送した
り、処理ｍ股肉の処理段＠（ビットと称す）へ輸送する
にあたっては、落下事故などの衝撃にそなえ、その容器
がｔ損し放射性物質あるいは放射線が漏洩することのな
いよう充分な容器の保護を行う必要がある。Therefore, when transporting these radioactive materials to a processing facility or to a processing stage (referred to as a bit) for processed meat, be sure to prepare for impact such as a fall accident, and prevent the container from being damaged or exposed to radioactive materials or radiation. Containers must be adequately protected to prevent leakage.
第１図は上記ビットに放射性物質を収納したキャニスタ
を収納している状態を示したものである。FIG. 1 shows a state in which a canister containing a radioactive substance is housed in the bit.
ビット１０１は中空円筒状に形成されており、その外部
には地盤１０２が存在している。The bit 101 is formed into a hollow cylindrical shape, and a ground 102 exists outside the bit 101.
そして、このビット１０１内に、吊り具１０３により吊
り下げられながら、放射性物質を収納したキャニスタ１
０４が多段積みで順次積込まれており、最下段のキャニ
スタ１０４とビット１０１底部との間には緩衝体１０５
が設けられている。Inside this bit 101, a canister 1 containing radioactive material is suspended by a hanging device 103.
04 are loaded one after another in multiple stages, and a buffer 105 is placed between the bottom canister 104 and the bottom of the bit 101.
is provided.
ここで、吊り具１０３が切断してキャニスタ１０６が落
下した場合を考える。このとき、落下したキャニスタ１
０６は先に積込まれたキャニスタ１０４の頂部１０４ａ
に衝突し、その衝撃は上記緩衝体１０５に伝達されるこ
とになる。Here, consider a case where the hanging tool 103 breaks and the canister 106 falls. At this time, canister 1 that fell
06 is the top 104a of the canister 104 loaded first
The shock is transmitted to the buffer body 105.
ところで従来は、上記緩衝体１０５と同様の働きをする
ものとして、例えばばねなどで構成されたものが用いら
れていたが、このような構造の場合、キャニスタ落下時
の衝撃力は低下させることができるが、衝撃力に対する
緩１！！ｉ装置の変形が大きいために、緩衝装置を大型
にしなければならない。したがって、比較的小規模（コ
ンパクト）であるビットの内部に設けることは困難なも
のになってしまう。また、各キャニスタ間に緩衝体を設
けることも考えられているが、作業工数（ハンドリング
の回数）が増大する問題があった。By the way, in the past, a shock absorber made of a spring or the like was used as a shock absorber 105, but with this structure, the impact force when the canister falls cannot be reduced. It can be done, but it is lenient against impact force! ! Since the deformation of the i-device is large, the shock absorber must be made large. Therefore, it becomes difficult to provide it inside a relatively small (compact) bit. It has also been considered to provide a buffer between each canister, but this has the problem of increasing the number of man-hours (number of handling operations).
また、逆に変形を小さくするために、剛性の大きな構造
にした緩衝装置では、底部の緩衝体１０５で衝撃エネル
ギーが吸収される前に、落下したキャニスタとすでに積
込まれたキャニスタの衝突部が衝撃的に圧壊してしまい
、放射能の漏洩や、ビットからのキャニスタの取出しが
困難となってしまうことが考えられる。On the other hand, in a shock absorber that has a highly rigid structure in order to reduce deformation, the collision area between the fallen canister and the already loaded canister is generated before the shock energy is absorbed by the shock absorber 105 at the bottom. It is conceivable that the canister will be crushed due to impact, resulting in leakage of radioactivity and difficulty in removing the canister from the bit.
また、従来のＭ衝装置は複雑な構造を持つものが多く、
施工を容易にして生産コストを下げるためになるべく簡
単で小型の構造のものが望まれる。In addition, many conventional M shock devices have complicated structures,
In order to facilitate construction and reduce production costs, a structure that is as simple and compact as possible is desired.
（発明の目的）
本発明は上記問題点を解決するためになされたものであ
り、衝撃部から遠く離れた所に設けられても衝撃エネル
ギーを十分に吸収することができるとともに、衝撃を受
けた時の変形量が小さくて小型化が可能であり、しかも
簡単な構造による緩衝装置を提供することを目的とする
。(Purpose of the Invention) The present invention has been made to solve the above-mentioned problems, and can sufficiently absorb impact energy even if it is installed far away from the impact part. It is an object of the present invention to provide a shock absorber which has a small amount of deformation during operation, can be downsized, and has a simple structure.
（発明の構成）
本発明は、上下に開口するように中空状に形成した第１
部材および第２部材を、その一方が他方の内側になるよ
うに基板上に立直させ、上記第２部材は第１部材よりも
上下方向に短くしかも第１部材よりも高い圧縮強度をも
つように形成し、上記基板に対向し上記第２部材の上端
との間に空間ができるように上記第１部材の上端に底部
板を設けたものである。(Structure of the Invention) The present invention provides a first
The member and the second member are stood upright on the substrate so that one is inside the other, and the second member is shorter in the vertical direction than the first member and has a higher compressive strength than the first member. and a bottom plate is provided at the upper end of the first member so as to face the substrate and provide a space between the upper end of the second member and the upper end of the second member.
このような構成によれば、大きな衝撃力が発生したとき
に、まず圧縮強度の低い第１部材が変形して衝撃時のシ
ョックを和らげ、次に第１部材よりも圧縮強度の高い第
２部材が変形して残りの衝撃エネルギーを吸収すること
になる。According to such a configuration, when a large impact force is generated, the first member having a low compressive strength deforms to soften the shock at the time of impact, and then the second member having a higher compressive strength than the first member deforms. deforms and absorbs the remaining impact energy.
このように段階的に各部材が変形することにより、！ｌ
ｉ撃を受けた瞬間のエネルギーは変形し易い第１部材に
より吸収することができるため小さな初期衝撃力しか発
生せず、しがも、その後に変形量の小さい第２部材が変
形するようになっているので全体としての変形ｍも小さ
く抑えることができる。このような理想的な！１ＷｉＪ
のメカニズムはビット内の緩ＷｊＪ装置としても、また
キャスク内の緩衝装置としても同様に動く。By deforming each member step by step in this way,! l
Since the energy at the moment of receiving an impact can be absorbed by the first member, which is more easily deformed, only a small initial impact force is generated, but the second member, which has a smaller amount of deformation, then begins to deform. Therefore, the overall deformation m can be kept small. Such an ideal! 1WiJ
The mechanism works equally well as a loose WjJ device in the bit and as a buffer in the cask.
（実施例）
本発明の第１実廁例を第１〜３図および第１１〜１２図
により説明する。(Example) A first practical example of the present invention will be explained with reference to FIGS. 1-3 and 11-12.
地盤’１０２内に埋設され、中空円筒状に形成されたビ
ット１０１の内部に、放射性物質を収納した複数へのキ
ャニスタ１０３が積込まれる。最下段キャニスタ１０４
とビット１０１底部との間には緩衝装置１０５が設置さ
れている。A plurality of canisters 103 containing radioactive materials are loaded into a bit 101 buried in the ground 102 and formed into a hollow cylindrical shape. Bottom canister 104
A buffer device 105 is installed between the bottom of the bit 101 and the bottom of the bit 101.
緩衝装置１０５は次のような構造になっている。The shock absorber 105 has the following structure.
円板状に形成された基板１１に立直するように、中空円
筒状に形成された第１部材１３と第２部材１４が設けら
れており、この第１部材１３の上端には、上記基板１１
に対向するように底部板１２が設けられている。なお、
ここでは基板１１および底部板１２は円板状に形成され
ているが、本発明ではその形状は問わず、容器に応じた
形状に形成すればよい。A first member 13 and a second member 14 formed in a hollow cylindrical shape are provided so that the substrate 11 formed in a disk shape can be erected.
A bottom plate 12 is provided so as to face the bottom plate 12 . In addition,
Although the substrate 11 and the bottom plate 12 are formed in a disk shape here, the present invention does not care about their shape, and they may be formed into a shape that corresponds to the container.
上記第２部材１４は、第１部材１３の内側に設けられて
おり、しかも第１部材１３よりも上下方向の寸法が短く
、かつ厚内に形成されており、第１部材１３に比べると
圧縮強度の高い、つまり変形しにくい構造となっている
。The second member 14 is provided inside the first member 13, has a shorter dimension in the vertical direction than the first member 13, and is formed to be thicker than the first member 13, and is compressible compared to the first member 13. It has a structure with high strength, which means it is difficult to deform.
次に、最下段にキャニスタ１０４が設置されている状態
で、次のキャニスタ１０６が事故等により落下した時の
作用について説明する。Next, the operation when the next canister 106 falls due to an accident or the like while the canister 104 is installed at the lowest level will be explained.
第２図においてキャニスタの衝突により緩ｍ装置に上方
より圧縮するような外力が急激に加えられると、まず薄
肉で圧縮像度の低い第１部材１３が変形を始め、この変
形により、衝撃を受けた瞬間の衝撃エネルギーがある程
度吸収される。In Fig. 2, when an external force that compresses the loose m device is suddenly applied from above due to the collision of the canister, the first member 13, which is thin and has a low degree of compression, begins to deform, and due to this deformation, it receives the impact. The momentary impact energy is absorbed to some extent.
そして、第１部材の変形が進行していき、底部板１２が
第２部材１４の上端まで変位すると、今度は厚肉で圧縮
強度の高い第２部材１４が変形を始め、残りの衝撃エネ
ルギーが吸収される。Then, as the deformation of the first member progresses and the bottom plate 12 is displaced to the upper end of the second member 14, the second member 14, which is thick and has high compressive strength, begins to deform, and the remaining impact energy is absorbed. Absorbed.
次に、第１表に示した３つの場合における、時間と衝撃
力の関係および時間と変形量の関係を、第１１図（ａ）
（ｂ）（ｃ）および第１２図（ａ）（ｂ）（ｃ）により
説明する。Next, the relationship between time and impact force and the relationship between time and deformation amount in the three cases shown in Table 1 are shown in Figure 11(a).
This will be explained with reference to FIGS. 12(b) and 12(c) and FIGS. 12(a), (b), and (c).
第１表
第１表において、ｔｌは第１部材の肉厚、ｔ２は第２部
材の肉厚、Ｒ１は第１部材の半径、Ｒ２は第２部材の半
径、Ｓは第２部材の上端と底部板の距離である。すなわ
ち、ｃａｓｅ （ａ＞は第１部材のみの構造であり、ｃ
ａｓｅ （ｃ）は第１部材と第２部材が同じ高さに形成
された構造、すなわら第２部材も底部板に接触した構造
になっている。またここでは、それぞれの部材は降伏応
力σｙ ＝ ５ 、６に９／ｍｔｔ＋’の材料（アルミ
ニウム）で形成されている。Table 1 In Table 1, tl is the wall thickness of the first member, t2 is the wall thickness of the second member, R1 is the radius of the first member, R2 is the radius of the second member, and S is the upper end of the second member. This is the distance of the bottom plate. That is, case (a> is the structure of only the first member, c
Ase (c) has a structure in which the first member and the second member are formed at the same height, that is, the second member is also in contact with the bottom plate. Further, here, each member is formed of a material (aluminum) with yield stress σy = 5, 6 to 9/mtt+'.
これに対し、第１１図（ａ＞（ｂ）（ｃ）は、上記Ｃａ
５ｅ （ａ）（ｂ）（Ｃ）において、それぞれ上方から
′ｌ！Ｉ徂４８０ Ｋ９の剛体が１８３３０履／ ５ｅ
ＩＣの速度で衝突した時の時間と衝撃力の関係を示した
グラフであり、第１２図は同状態における上記ｃａｓｅ
（ａ）（ｂ）（ｃ）の時間と変形量の関係を示したグ
ラフである。On the other hand, in FIG. 11 (a>(b)(c), the above Ca
5e In (a), (b), and (C), 'l!' from above, respectively. I 480 K9 rigid body is 18330 shoes / 5e
This is a graph showing the relationship between time and impact force when a collision occurs at the speed of an IC, and Figure 12 is a graph showing the relationship between time and impact force when the IC collides at the speed of the IC.
It is a graph showing the relationship between time and amount of deformation in (a), (b), and (c).
まず第１１図を参照すると、衝撃直後の衝撃力はｃａｓ
ｅ （ａ）（ｂ）に比べｃａｓｅ （ｃ）が断然大きい
。したがってｃａｓｅ （ｃ）では、前述したように衝
突エネルギーが吸収される前にキャニスタ１０４が圧壊
してしまう恐れがある。First, referring to Figure 11, the impact force immediately after impact is cas
e Case (c) is by far larger than (a) and (b). Therefore, in case (c), the canister 104 may be crushed before the collision energy is absorbed as described above.
次に第１２図を参照すると、ｃａｓｅ （ａ）はｃａｓ
ｅ （ｂ）（Ｃ）に比べて１０倍以上の変形を生じてい
ることがわかる。Next, referring to Figure 12, case (a) is cas
e It can be seen that the deformation is more than 10 times that of (b) and (C).
このような結果から判断すると、衝撃を受けた瞬間に大
きな衝撃力が生じることを防止し、しかも変形量の小さ
い緩衝装置としては、ｃａｓｅ（ｂ）のように段構造に
したものが上記３つのＣａ５ｅの中で最も好ましいとい
える。Judging from these results, as a shock absorber that prevents a large impact force from occurring at the moment of impact and has a small amount of deformation, a step structure like case (b) is the best choice for the above three types of shock absorbers. It can be said that it is the most preferable among Ca5e.
一般に、半径Ｒ１肉厚ｔ１の薄肉円筒がＳだけ変形する
と、吸収されるエネルギーＷは次のようになる。Generally, when a thin cylinder with radius R1 and wall thickness t1 is deformed by S, the absorbed energy W is as follows.
ッ＝１□、６．．ｙ 、Ｒ／ｉ、、１％、ＳＹ
すなわち当実施例では、まず薄肉構造の第１部材１３の
変形により上記エネルギーＷが吸収され、これにより上
記キャニスタ−０４の圧壊が防止されると同時に、上記
第１部材１３の変形後に厚肉構造の第２部材１４が変形
を始める構成になっているので、第１部材１３だけの構
造にくらべ、変形量を小さく抑えることができる。t = 1□, 6. ．． y, R/i, 1%, SY In other words, in this embodiment, the energy W is first absorbed by the deformation of the first member 13 having a thin wall structure, thereby preventing the canister 04 from being crushed. Since the second member 14 having a thick wall structure starts deforming after the first member 13 is deformed, the amount of deformation can be kept small compared to a structure in which only the first member 13 is used.
また、本発明では第１部材および第２部材の断面形状は
円に限らず、例えば多角形や楕円状のものでも構わない
。Further, in the present invention, the cross-sectional shapes of the first member and the second member are not limited to circles, but may be polygonal or elliptical, for example.
次に第２実施例を第４図に示す。ここでは第１部材２３
および第２部材２４を中空円錐状に形成して緩衝装置Ｃ
２を構成している。このような構造においても上記第１
実施例と同様の効果を得ることができる。Next, a second embodiment is shown in FIG. Here, the first member 23
and the second member 24 is formed into a hollow cone shape, and the shock absorber C
2. Even in such a structure, the above first
Effects similar to those of the embodiment can be obtained.
第３実施例を第５図に示す。ここでは、第１部材３３が
第２部材３４の内側に位置するように緩衝装置Ｃ３を構
成している。A third embodiment is shown in FIG. Here, the shock absorber C3 is configured such that the first member 33 is located inside the second member 34.
第４実施例を第６図に示す。ここに示される緩衝装置Ｃ
４は、第１部材４３の内側に設けられた第２部材４４の
さ＼らに内側に、上記第１部材４３および第２部材４４
と同様に中空状に形成され、しかも上記第１部材４３お
よび第２部材４４よりも上下方向に短くて圧縮強度の高
い第３部材４５を基板１１上に立直させたものである。A fourth embodiment is shown in FIG. Buffer C shown here
4, the first member 43 and the second member 44 are provided inside the second member 44 provided inside the first member 43.
A third member 45, which is similarly hollow and shorter in the vertical direction than the first member 43 and the second member 44 and has higher compressive strength, is erected on the substrate 11.
このように部材を多数個設けていくことにより、より段
階的にｌｉ！することができる。By providing a large number of members in this way, li! can do.
第５実施例を第７図に示す。ここに示される緩衝装ＮＣ
５は、細い柱である第１部材５３を互いに隣接させなが
ら基板１１上に円軌跡を描くように多数配設することに
より全体を中空円筒状になるように形成し、その内側に
、同様にして上記第１部材５３よりも太い柱である第２
部材５４を配設したものである。このように、本発明は
第１部材および第２部材を必ずしも一体に形成する必要
はない。A fifth embodiment is shown in FIG. Buffer NC shown here
5 is formed to have a hollow cylindrical shape as a whole by arranging a large number of first members 53, which are thin columns, adjacent to each other so as to draw a circular locus on the substrate 11. The second pillar is thicker than the first member 53.
A member 54 is provided. In this way, the present invention does not necessarily require that the first member and the second member be integrally formed.
第６実施例を第８図および第９図に示す。ここでは、第
１部材６３を中空円筒状に形成して基板１１上に複数個
配設し、この第１部材６３と同軸になるように、第１部
材６３よりも小径の中空円筒状に形成された第２部材６
４を第１部材６３の各々内側に配設して緩衝装置Ｃ６を
構成している。A sixth embodiment is shown in FIGS. 8 and 9. Here, a plurality of first members 63 are formed into a hollow cylindrical shape and arranged on the substrate 11, and formed into a hollow cylindrical shape with a smaller diameter than the first member 63 so as to be coaxial with the first member 63. The second member 6
4 are arranged inside each of the first members 63 to constitute a shock absorbing device C6.
なお、本発明は使用状態において上下方向は関係なく、
基板を上にして用いても構わない。またキャニスタとビ
ットの間に用いるだけでなく、キャニスタとキャニスタ
の間に用いても本発明の緩ＷＪ装置を適用することがで
きる。In addition, the present invention does not care about the vertical direction in the state of use.
It may be used with the substrate facing up. Further, the loose WJ device of the present invention can be applied not only between a canister and a bit, but also between canisters.
また、本発明の緩衝装置は、第１０図に示すように、キ
ャスク内に収納されたキャニスタの落下衝撃緩衝にも有
効である。同図において、キャスク１は中空円筒形状に
構成されており、その上下にキャスク１本体の落下衝撃
板Ｉｌｉ装置５が取付けられている。キャスク１内には
、核燃料２を積載した複数のキャニスタ３が収納されて
おり、キャニスタ３同士の間にはスペーサ４が設置され
、キャニスタ３とキャスク１本体との間には本発明によ
る緩衝装置Ｃ１が設けられている。落下衝撃時にはキャ
スク１本体に比ベキャニスタ強度がかなり低いためキャ
スク本体緩衝装置５だけではキャニスタ３の健全性を保
つことが困難となる恐れがあり、この様な構成において
も本！！！ｌｉ装置が有効となる。Furthermore, the shock absorbing device of the present invention is effective in buffering the impact of a fall of a canister housed in a cask, as shown in FIG. In the figure, the cask 1 has a hollow cylindrical shape, and drop impact plate Ili devices 5 for the main body of the cask 1 are attached above and below the cask 1. A plurality of canisters 3 loaded with nuclear fuel 2 are housed in the cask 1, a spacer 4 is installed between the canisters 3, and a buffer device according to the present invention is installed between the canister 3 and the main body of the cask 1. C1 is provided. During a fall impact, the strength of the canister 3 is considerably lower than that of the cask 1 body, so it may be difficult to maintain the integrity of the canister 3 with only the cask body shock absorber 5. ! ! li device becomes effective.
（発明の効果）
以上説明したように本発明は、！ｉ撃を受けた時に、ま
ず圧縮強度の低い第１部材が容易に変形して衝撃エネル
ギーを吸収するため、エネルギーを吸収する前にキャニ
スタの衝突部等が圧壊することがない。(Effects of the Invention) As explained above, the present invention has the following advantages: When an impact is received, the first member, which has a low compressive strength, easily deforms and absorbs the impact energy, so that the collision part of the canister, etc. does not collapse before the energy is absorbed.
しかも、圧縮強度の高い第２部材を設けることにより、
全体として変形量を小さく抑えることができるため、緩
衝装置全体を小型化にすることが可能であり、比較的狭
い容器内やビット内においても適用することができ、し
かも運搬が容易となる。Moreover, by providing the second member with high compressive strength,
Since the amount of deformation can be kept small as a whole, it is possible to downsize the entire shock absorbing device, it can be applied even inside a relatively narrow container or a bit, and it is easy to transport.
また、その構造は従来のものに比べて簡単なものであり
、施工が容易で、生産コストの低減を図ることができる
。In addition, the structure is simpler than conventional ones, making construction easier and reducing production costs.
第１図はビット内へのキャニスタの積込み状態を示す縦
断面図、第２図は本発明の第１実施例の縦断面図、第３
図は第２図のＩ［ｌ−１１［線断面図、第４図は第２実
施例の縦断面図、第５図は第３実施例の縦断面図、第６
図は第４実施例の縦断面図、第７図は第５実施例の横断
面図、第８図は第６実施例の縦断面図、第９図は第８図
の■−ＩＸ線断面図、第１０図は本発明をキャスク内に
使用した状態を示す縦断面図、第１１図（ａ）（ｂ）（
ｃ）は時間と衝撃力の関係を示すグラフ、第１２図（ａ
）（ｂ）（ｃ）は時間と変形口の関係を示すグラフであ
る。
１０５、Ｃ１，Ｃ２、Ｃ３、Ｃ４、Ｃ５、Ｃ６・・・緩
衝装置、１１・・・基板、１２・・・底部板、１３゜２
３．３３，４３．５３．６３・・・第１部材、１４゜２
４．３４，４４．５４．６４・・・第２部材。
特許出願人 株式会社 神戸製ｍ所代 理 人
弁理士 小書 悦司同 弁理
士 長１） 正量 弁理士 板書 康
夫茅 ２ Ａ
第 ３ 図
第 ４ 図
第 ５ 図
第 ６ 図
第 ７ 図
第 ８ 図
第 ９ 図
第１０図
変形Ｖ＜ｃｎ） ｘ１０’FIG. 1 is a vertical cross-sectional view showing how the canister is loaded into the bit, FIG. 2 is a vertical cross-sectional view of the first embodiment of the present invention, and FIG.
The figures are a sectional view taken along line I[l-11] of Fig. 2, Fig. 4 is a longitudinal sectional view of the second embodiment, Fig. 5 is a longitudinal sectional view of the third embodiment, and
The figure is a vertical sectional view of the fourth embodiment, FIG. 7 is a cross-sectional view of the fifth embodiment, FIG. 8 is a vertical sectional view of the sixth embodiment, and FIG. 9 is a cross-sectional view taken along the line ■-IX in FIG. 10 are longitudinal sectional views showing the state in which the present invention is used in a cask, and FIGS. 11(a), (b) (
c) is a graph showing the relationship between time and impact force, Figure 12 (a)
), (b), and (c) are graphs showing the relationship between time and the deformed opening. 105, C1, C2, C3, C4, C5, C6...Buffer device, 11...Substrate, 12...Bottom plate, 13°2
3.33, 43.53.63...first member, 14°2
4.34, 44.54.64... second member. Patent Applicant Kobe Seisakusho Co., Ltd. Agent Patent Attorney Kosho Etsushi Patent Attorney Chief 1) Seibu Patent Attorney Board Writer Yasuo Kaya 2 A Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Deformation V<cn) x10'
Claims (1)
よび第２部材を、その一方が他方の内側になるように基
板上に立直させ、上記第２部材は第１部材よりも上下方
向に短くしかも第１部材よりも高い圧縮強度をもつよう
に形成し、上記基板に対向し上記第２部材の上端との間
に空間ができるように上記第１部材の上端に底部板を設
けたことを特徴とする緩衝装置。 ２、上記第１部材または第２部材を中空円筒状に形成し
たことを特徴とする特許請求の範囲第１項記載の緩衝装
置。 ３、上記第１部材または第２部材を中空円錐状に形成し
たことを特徴とする特許請求の範囲第１項記載の緩衝装
置。 ４、上記第１部材および第２部材と同様に中空状に形成
されしかも上記第１部材および第２部材よりも上下方向
に短くて第１部材よりも圧縮強度の高い部材を上記基板
上に立直させたことを特徴とする特許請求の範囲第１項
記載の緩衝装置。 ５、上記第１部材または第２部材を、多数本の柱を互い
に隣接させながら基板上に閉曲線を描くように配設する
ことにより全体を中空円筒状に形成したことを特徴とす
る特許請求の範囲第１項記載の緩衝装置。 ６、上記第１部材を中空円筒状に形成して上記基板上に
複数個配設し、この第１部材と同軸になるように、上記
第１部材と径の異なる中空円筒状に形成された第２部材
を配設したことを特徴とする特許請求の範囲第１項記載
の緩衝装置。[Claims] 1. A first member and a second member, which are formed in a hollow shape with vertical openings, are stood upright on a substrate so that one of them is inside the other, and the second member is The upper end of the first member is formed to be shorter in the vertical direction than the first member and has a higher compressive strength than the first member, and is formed to face the substrate and to have a space between it and the upper end of the second member. A shock absorbing device characterized by having a bottom plate. 2. The shock absorber according to claim 1, wherein the first member or the second member is formed into a hollow cylindrical shape. 3. The shock absorber according to claim 1, wherein the first member or the second member is formed into a hollow cone shape. 4. A member that is formed in a hollow shape similar to the first member and the second member, is shorter in the vertical direction than the first member and the second member, and has a higher compressive strength than the first member is erected on the substrate. 2. The shock absorbing device according to claim 1, wherein the shock absorbing device is characterized in that: 5. The first member or the second member is formed entirely into a hollow cylindrical shape by arranging a large number of pillars adjacent to each other so as to draw a closed curve on the substrate. A shock absorber according to scope 1. 6. The first member is formed into a hollow cylindrical shape, and a plurality of the first members are arranged on the substrate, and the first member is formed into a hollow cylindrical shape having a diameter different from that of the first member so as to be coaxial with the first member. The shock absorber according to claim 1, further comprising a second member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61167633A JPS6326439A (en) | 1986-07-16 | 1986-07-16 | Shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61167633A JPS6326439A (en) | 1986-07-16 | 1986-07-16 | Shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6326439A true JPS6326439A (en) | 1988-02-04 |
Family
ID=15853393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61167633A Pending JPS6326439A (en) | 1986-07-16 | 1986-07-16 | Shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6326439A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010083307A (en) * | 2008-09-30 | 2010-04-15 | Hitachi Ltd | Rail vehicle equipped with collision mitigation device |
| JP2010127866A (en) * | 2008-11-28 | 2010-06-10 | Mitsubishi Heavy Ind Ltd | Shock absorbing device of fuel assembly, and fuel assembly storage container |
| JP2011013035A (en) * | 2009-06-30 | 2011-01-20 | Mitsubishi Heavy Ind Ltd | Shock absorber for fuel assembly, and container for accommodating the same |
| JP2011013034A (en) * | 2009-06-30 | 2011-01-20 | Mitsubishi Heavy Ind Ltd | Shock absorber for fuel assembly and container for accommodating the same |
| JP2011033499A (en) * | 2009-08-03 | 2011-02-17 | Mitsubishi Heavy Ind Ltd | Fuel assembly container |
| JP2011047670A (en) * | 2009-08-25 | 2011-03-10 | Mitsubishi Heavy Ind Ltd | Shock absorber and storage cask of fuel assembly |
| JP2012229804A (en) * | 2012-06-04 | 2012-11-22 | Toshiba Corp | Shock absorbing body, shock absorbing device, and manufacturing method for shock absorbing body |
| FR3010226A1 (en) * | 2013-09-05 | 2015-03-06 | Tn Int | PARCELS COMPRISING IMPROVED IMPACT DAMAGING MEANS BETWEEN AN ASSEMBLY COMPRISING RADIOACTIVE MATERIALS AND THE COVER OF THE PACKAGING |
| JP2015096744A (en) * | 2013-11-15 | 2015-05-21 | 四国電力株式会社 | Protective structure |
-
1986
- 1986-07-16 JP JP61167633A patent/JPS6326439A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010083307A (en) * | 2008-09-30 | 2010-04-15 | Hitachi Ltd | Rail vehicle equipped with collision mitigation device |
| JP2010127866A (en) * | 2008-11-28 | 2010-06-10 | Mitsubishi Heavy Ind Ltd | Shock absorbing device of fuel assembly, and fuel assembly storage container |
| JP4638537B2 (en) * | 2008-11-28 | 2011-02-23 | 三菱重工業株式会社 | Fuel assembly shock absorber and fuel assembly storage container |
| JP2011013035A (en) * | 2009-06-30 | 2011-01-20 | Mitsubishi Heavy Ind Ltd | Shock absorber for fuel assembly, and container for accommodating the same |
| JP2011013034A (en) * | 2009-06-30 | 2011-01-20 | Mitsubishi Heavy Ind Ltd | Shock absorber for fuel assembly and container for accommodating the same |
| JP2011033499A (en) * | 2009-08-03 | 2011-02-17 | Mitsubishi Heavy Ind Ltd | Fuel assembly container |
| JP2011047670A (en) * | 2009-08-25 | 2011-03-10 | Mitsubishi Heavy Ind Ltd | Shock absorber and storage cask of fuel assembly |
| JP2012229804A (en) * | 2012-06-04 | 2012-11-22 | Toshiba Corp | Shock absorbing body, shock absorbing device, and manufacturing method for shock absorbing body |
| FR3010226A1 (en) * | 2013-09-05 | 2015-03-06 | Tn Int | PARCELS COMPRISING IMPROVED IMPACT DAMAGING MEANS BETWEEN AN ASSEMBLY COMPRISING RADIOACTIVE MATERIALS AND THE COVER OF THE PACKAGING |
| WO2015032848A1 (en) * | 2013-09-05 | 2015-03-12 | Tn International | Package comprising improved means for shock absorbance between an assembly containing radioactive materials and the cover of the packaging |
| CN105518801A (en) * | 2013-09-05 | 2016-04-20 | Tn国际公司 | Package comprising improved means for shock absorbance between an assembly containing radioactive materials and the cover of the packaging |
| JP2016529522A (en) * | 2013-09-05 | 2016-09-23 | テーエヌ アンテルナシオナル | Package including improved means for dampening shock between radioactive material containment assembly and package housing cover |
| US10192647B2 (en) | 2013-09-05 | 2019-01-29 | Tn International | Package comprising improved means of dampening impact between an assembly containing radioactive materials and the cover of the packaging |
| JP2015096744A (en) * | 2013-11-15 | 2015-05-21 | 四国電力株式会社 | Protective structure |
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