JP4524228B2 - Radiation irradiation apparatus with multiple radiation sources - Google Patents

Radiation irradiation apparatus with multiple radiation sources Download PDF

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JP4524228B2
JP4524228B2 JP2005243436A JP2005243436A JP4524228B2 JP 4524228 B2 JP4524228 B2 JP 4524228B2 JP 2005243436 A JP2005243436 A JP 2005243436A JP 2005243436 A JP2005243436 A JP 2005243436A JP 4524228 B2 JP4524228 B2 JP 4524228B2
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radiation
radiation source
plunger
irradiation
rotary
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JP2007057390A (en
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蘇水華
陳俊良
黄文松
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行政院原子能委員會核能研究所
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Description

本発明は、複数の放射線源を備えた放射線照射装置、特に回転操作と昇降操作により放射線源を選択して照射操作を行う放射線照射装置である。   The present invention is a radiation irradiation apparatus including a plurality of radiation sources, particularly a radiation irradiation apparatus that performs an irradiation operation by selecting a radiation source by a rotation operation and an elevating operation.

この複数の放射線源を供えた放射線照射装置は、照射実験や装置の補修に広範囲に応用される。放射線照射装置において放射線源を選択し、照射位置に移送する方法には概ね二つのタイプがあり、一つはガス圧により移送するタイプで、もう一つはシリンダー操作により移送するタイプである。以下に図1と図2を参照して、その主な問題点を説明する。
図１は、ガスパイプ通路式複数の放射線源照射装置の説明図である。放射線源選択装置3は、使用しようとする放射線源８を左側の照射口4に隣接する位置に移送して、そこで空気圧力で放射線源8を照射口4に押し込んで照射を開始する。
図２は、シリンダー通路式複数の放射線源照射装置の説明図である。その作用は図１と似ているが、放射線源8を照射口4に押し込む操作はシリンダーを利用する。
（1）放射線源遮蔽体1は、放射線源を収容し保管するスペースを有し、全体が高密度材料からなるもので、放射線漏洩防止作用を有するが、ガス通路管（あるいはシリンダー通路）17などは、中空構造となるために放射線の遮蔽作用が充分でなく、外部に漏洩しやすい。 The radiation irradiation apparatus provided with the plurality of radiation sources is widely applied to irradiation experiments and repairs of the apparatus. There are generally two types of methods for selecting a radiation source and transferring it to an irradiation position in a radiation irradiation apparatus, one is a type that transfers by gas pressure, and the other is a type that transfers by cylinder operation. The main problems will be described below with reference to FIG. 1 and FIG.
FIG. 1 is an explanatory diagram of a plurality of gas pipe passage type radiation source irradiation apparatuses. The radiation source selection device 3 moves the radiation source 8 to be used to a position adjacent to the left irradiation port 4, and pushes the radiation source 8 into the irradiation port 4 with air pressure to start irradiation.
FIG. 2 is an explanatory view of a plurality of cylinder path type radiation source irradiation apparatuses. The operation is similar to that of FIG. 1, but the operation of pushing the radiation source 8 into the irradiation port 4 uses a cylinder.
(1) The radiation source shield 1 has a space for storing and storing the radiation source, and is made of a high-density material as a whole, and has a radiation leakage prevention function, but a gas passage tube (or cylinder passage) 17 or the like Since it has a hollow structure, it does not have a sufficient radiation shielding effect and is likely to leak to the outside.

（2）放射線源選択装置3は、放射線源をそれぞれ分離して相互の干渉を防止しながら、選択した放射線源61をガス通路管（あるいはシリンダー通路）17に移送するが、放射線源室空間16とガス通路管（あるいはシリンダー通路）17は、空間となって遮蔽不足のため他の放射線源からの干渉が生じる。特に放射線源が多数ある時、相互の放射線源の間の間隔が小さくなるため、この現象はより生じやすい。 (2) The radiation source selector 3 transfers the selected radiation source 61 to the gas passage tube (or cylinder passage) 17 while separating the radiation sources and preventing mutual interference. The gas passage tube (or cylinder passage) 17 becomes a space, and interference from other radiation sources occurs due to insufficient shielding. This phenomenon is more likely to occur, especially when there are a large number of radiation sources, since the distance between the radiation sources becomes smaller.

（3）エアポンプ(あるいはシリンダー通路)15は、放射線源61を移送して照射位置へ移送するが、放射線源選択装置3の位置決めの不精確のため、放射線源61の角度が変動すると、ガス通路管（あるいはシリンダー通路）17の外れた位置に押し込まれる危険がある。 (3) The air pump (or cylinder passage) 15 transports the radiation source 61 and transports it to the irradiation position. However, if the angle of the radiation source 61 fluctuates due to inaccurate positioning of the radiation source selection device 3, the gas passage There is a risk of being pushed out of the tube (or cylinder passage) 17.

（4）放射線源は、一旦放射線源室16に送られると、その放射線被爆の危険のために取り出しも再配置のための作業も困難である。 (4) Once the radiation source is sent to the radiation source room 16, it is difficult to take it out and relocate because of the danger of radiation exposure.

（5）このようなケースとして、不意の停電などがあって圧送エアの圧力低下などが生じて放射線源が放射線源室に復帰できない、などがある。 (5) In such a case, there is a sudden power failure, etc., causing a drop in the pressure of the pumped air, etc., and the radiation source cannot return to the radiation source room.

故に上記の欠点は、この技術に熟知する技術者が極力、速やかに解決することが求められていた問題である。
特開２００４−１０９８３５号公報 Therefore, the above-mentioned drawback is a problem that an engineer familiar with this technology is required to solve as quickly as possible.
JP 2004-109835 A

本発明は、放射線源をプランジャー式棒に組み込む構造とすることにより、複数の放射線源照射装置におけるシリンダーなどの空間からの輻射線漏れを防止することを課題とする。   This invention makes it a subject to prevent the radiation leak from space, such as a cylinder in a some radiation source irradiation apparatus, by setting it as the structure which incorporates a radiation source in a plunger-type stick | rod.

本発明は、プランジャー式放射線源操作棒の構造の複数の放射線源照射装置により、放射線源室空間とシリンダー空間の放射線遮蔽作用の不足による放射線源の相互干渉を防止することを課題とする。   It is an object of the present invention to prevent mutual interference of radiation sources due to a lack of radiation shielding action between a radiation source chamber space and a cylinder space by using a plurality of radiation source irradiation devices having a plunger type radiation source operation rod structure.

本発明は、レバー式位置決め装置と機械腕でプランジャー式放射線源操作棒を操作することにより、放射線源の脱落、などの危険を防止することを課題とする。   An object of the present invention is to prevent dangers such as dropping off of a radiation source by operating a plunger-type radiation source operation rod with a lever-type positioning device and a mechanical arm.

本発明は、上方から放射線源操作棒を取り出す構造とすることにより、放射線源の交換操作を、より容易にすることを課題とする。   An object of the present invention is to make the operation of exchanging the radiation source easier by adopting a structure in which the radiation source operation rod is taken out from above.

本発明は、停電のため装置が操作不能になり放射線源が照射位置に滞留することになる危険を、重力によって放射線源を放射線源室に復帰させることを可能として防止することを課題とする。   It is an object of the present invention to prevent the danger that the apparatus becomes inoperable due to a power failure and the radiation source stays at the irradiation position by allowing the radiation source to return to the radiation source chamber by gravity.

本発明は、機器検査・補修や照射実験に応用される、一個又は数個の放射線源を組み合わせた照射装置を対象とする。
まず、放射線源遮蔽体１と回転式放射線源選択装置３によって放射線源が安全に収容・保管できる本体を形成し、その放射線源遮蔽体の上面には回転式放射線源選択装置収容縦孔２が設けられる。
放射線源遮蔽体の一側に回転式放射線源選択装置３を配置すると共に、一端側壁には放射線を放射するための照射口４を設け、また下方には回転式放射線源選択装置に対する動力伝送軸通孔が設けられる。
このうちのプランジャー式放射線源操作棒（図４参照）では、放射線源を上下二つの遮蔽構造に挟まれているため放射線の軸方向両端への放射を遮蔽して放射線漏れを防止し、放射線源の取り扱い操作における相互干渉を減少できる。 The present invention is directed to an irradiation apparatus combining one or several radiation sources, which is applied to equipment inspection / repair and irradiation experiments.
First, the radiation source shield 1 and the rotary radiation source selection device 3 form a main body that can safely accommodate and store the radiation source, and the rotary radiation source selection device accommodation vertical hole 2 is formed on the upper surface of the radiation source shield. Provided.
A rotary radiation source selection device 3 is disposed on one side of the radiation source shield, an irradiation port 4 for emitting radiation is provided on one end side wall, and a power transmission shaft for the rotary radiation source selection device is provided below. A through hole is provided.
Of these, the plunger-type radiation source operation rod (see FIG. 4) has a radiation source sandwiched between two upper and lower shielding structures, so that radiation at both ends in the axial direction is shielded to prevent radiation leakage. Mutual interference in source handling operations can be reduced.

回転式放射線源選択装置は、複数の放射線源を仕切って配置し、レバー式の位置決め装置１０を回転操作して選択された放射線源を予備照射位置に正確に移送する。   The rotary radiation source selection device divides and arranges a plurality of radiation sources, and rotates the lever type positioning device 10 to accurately transfer the selected radiation source to the preliminary irradiation position.

区画された構造の照射口はプランジャー式放射線源操作棒の下方の不十分な遮蔽構造によって、プランジャー管から照射口に漏洩する他の放射線源の散乱放射線の妨害を防止する。   The partitioned structure of the irradiation port prevents interference of scattered radiation from other radiation sources leaking from the plunger tube to the irradiation port by insufficient shielding structure under the plunger type radiation source operation rod.

このようにして本発明の放射線源遮蔽体は、放射線源を安全に照射装置の中に収容・保管することができる。   Thus, the radiation source shield according to the present invention can safely store and store the radiation source in the irradiation apparatus.

放射線源操作棒を取り扱う機械腕装置は、放射線源を照射位置若しくは予備照射位置に移送するが、停電などにより動力源が働かないときにも重力の作用により機械腕は放射線源を照射位置から放射線を遮蔽できる予備照射位置に復帰させることができる。   The mechanical arm device that handles the radiation source operation rod transfers the radiation source to the irradiation position or preliminary irradiation position, but even if the power source does not work due to a power failure or the like, the mechanical arm radiates the radiation source from the irradiation position by the action of gravity. It is possible to return to a preliminary irradiation position that can be shielded.

本発明の装置は、放射線源を安全に収容、保存することが可能であり、放射線漏洩の虞がなく、他の放射線源からの漏洩放射線による相互干渉がなく、正確に位置決めすることが可能であり、安全な動作の下で放射線源の出し入れの容易な放射線照射装置である。   The apparatus of the present invention can safely store and store radiation sources, there is no risk of radiation leakage, there is no mutual interference due to leakage radiation from other radiation sources, and it can be positioned accurately. It is a radiation irradiation device that allows easy entry and exit of radiation sources under safe operation.

図３は、本発明の複数の放射線源照射装置の縦切断面図である。該複数の放射線源照射装置（図３）は放射線源遮蔽体1、回転式放射線源選択装置収容縦孔2、回転式放射線源選択装置3、照射口4、プランジャー管5、プランジャー放射線源操作棒6、プランジャー放射線源箱7、プランジャー放射線源8、機械腕9、レバー式位置決め装置10、制御装置11、照射位置12、及び予備照射位置13からなる。   FIG. 3 is a longitudinal sectional view of a plurality of radiation source irradiation apparatuses of the present invention. The plurality of radiation source irradiation devices (FIG. 3) include a radiation source shield 1, a rotary radiation source selection device accommodating vertical hole 2, a rotary radiation source selection device 3, an irradiation port 4, a plunger tube 5, and a plunger radiation source. It consists of an operating rod 6, a plunger radiation source box 7, a plunger radiation source 8, a mechanical arm 9, a lever type positioning device 10, a control device 11, an irradiation position 12, and a preliminary irradiation position 13.

また、該複数の放射線源照射装置の各構成要件の作用は次のとおりである。放射線源遮蔽体1は、鉛などの高比重元素を含み放射線漏洩を防止する。
回転式放射線源選択装置収容縦孔2は、プランジャー管5及びプランジャー放射線源操作棒6をセットし、回転式放射線源選択装置3はこれらを回転可能に収納し、放射線漏洩を防止する。
回転式放射線源選択装置3は、使用しようとする放射線源をセットしたプランジャー放射線源操作棒6を予備位置に移らせる。照射口4は、放射線源8からの放射線を外へ放射する開口であり、放射しないときには放射線が外部に出ないようにプラグで閉塞する。プランジャー管5は、回転式放射線源選択装置内でプランジャー放射線源操作棒6を収納し、プランジャー放射線源箱7は放射線源8を収納する。機械腕9は、プランジャー放射線源操作棒6の上端のハンドル６１を把持して上下に移送し、レバー式位置決め装置10はより精確に回転式放射線源選択装置3の操作位置を定位する。
図４に示すプランジャー放射線源操作棒は、ハンドル61、放射線漏れ止めリング62、上部遮蔽体63、放射線源箱64、下部遮蔽体65、及び放射線源66からなる。
The operation of each constituent element of the plurality of radiation source irradiation apparatuses is as follows. The radiation source shield 1 contains a high specific gravity element such as lead and prevents radiation leakage.
Rotating the radiation source selecting apparatus accommodating longitudinal hole 2 sets the plunger tube 5 and the plunger radiation source operating rod 6, the rotating radiation source selection device 3 rotatably accommodating them, to prevent radiation leakage.
The rotary radiation source selection device 3 moves the plunger radiation source operation rod 6 in which the radiation source to be used is set to the preliminary position. The irradiation port 4 is an opening that radiates the radiation from the radiation source 8 to the outside, and is closed with a plug so that the radiation does not go outside when the radiation is not emitted. The plunger tube 5 accommodates the plunger radiation source operating rod 6 in the rotary radiation source selection device, and the plunger radiation source box 7 accommodates the radiation source 8. The mechanical arm 9 grips the handle 61 at the upper end of the plunger radiation source operation rod 6 and moves it up and down, and the lever type positioning device 10 locates the operation position of the rotary radiation source selection device 3 more accurately.
The plunger radiation source operation rod shown in FIG. 4 includes a handle 61, a radiation leakage prevention ring 62, an upper shield 63, a radiation source box 64, a lower shield 65, and a radiation source 66.

制御装置１１は、タイマー、位置制御装置、微動操作装置を備え、照射時間の設定、回転式放射線源選択装置の制御、タイマーと同期して機械腕の操作が可能である。   The control device 11 includes a timer, a position control device, and a fine motion operation device, and can set the irradiation time, control the rotary radiation source selection device, and operate the mechanical arm in synchronization with the timer.

本発明の放射線照射装置が作動していないときは、機体内の空間はプランジャー放射線源操作棒で閉塞された状態にあるため、これらに遮蔽されて放射線の漏洩は生じない。   When the radiation irradiation apparatus of the present invention is not in operation, the space inside the aircraft is in a state of being blocked by the plunger radiation source operation rod, and is thus shielded so that no leakage of radiation occurs.

本発明の放射線照射装置を作動させるとき、まず制御装置11で選択したい放射線源及び照射時間を設定する。スタートボタンを押すと、回転式放射線源選択装置3は直ちに選定されたプランジャー放射線源操作棒6を予備照射位置13に移送し、レバー式位置決め装置10で正確に位置決めすると、機械腕9はプランジャー放射線源操作棒のハンドル６１を把持し、放射線源を照射位置12へ引き上げて、タイマーの作動に合わせて照射が始まる。   When operating the radiation irradiation apparatus of the present invention, first, the control apparatus 11 sets a radiation source to be selected and an irradiation time. When the start button is pressed, the rotary radiation source selection device 3 immediately moves the selected plunger radiation source operation rod 6 to the preliminary irradiation position 13 and accurately positions it with the lever type positioning device 10, so that the mechanical arm 9 moves to the plan. The handle 61 of the jar radiation source operation rod is gripped, the radiation source is pulled up to the irradiation position 12, and irradiation starts in accordance with the operation of the timer.

待機中の放射線源の上部遮蔽体、及び使用中の放射線源の下部遮蔽体は照射が行われるときに使用されていない放射線源の漏洩による干渉を阻止することができる。   The upper shielding of the standby radiation source and the lower shielding of the radiation source in use can prevent interference due to leakage of unused radiation sources when irradiation is performed.

照射時間経過後、機械腕９は放射線源を予備照射位置13に移送して照射ローテーションを完了する。   After the irradiation time has elapsed, the mechanical arm 9 transfers the radiation source to the preliminary irradiation position 13 and completes the irradiation rotation.

本発明の放射線照射装置は、例え停電などにより動力操作ができなくなっても、重力の作用により機械腕を予備照射位置12から予備照射位置13に下降移送させることができる。   The radiation irradiation apparatus of the present invention can move the mechanical arm from the preliminary irradiation position 12 to the preliminary irradiation position 13 by the action of gravity even if the power operation cannot be performed due to a power failure or the like.

従来のガスパイプ通路式複数の放射線源照射装置の説明図。Explanatory drawing of the several conventional gas pipe passage type radiation source irradiation apparatus. 他の従来のシリンダー通路式複数の放射線源照射装置の説明図。An explanatory view of other conventional cylinder passage type radiation source irradiation devices. 本発明のプランジャー式複数の放射線源照射装置の切断面説明図。The cut surface explanatory drawing of the plunger type radiation source irradiation apparatus of this invention. 本発明のプランジャー式放射線源操作棒の切断面説明図。Explanatory drawing of the cut surface of the plunger type radiation source operation stick | rod of this invention.

符号の説明Explanation of symbols

1放射線源遮蔽体
2放射線源選択装置収容縦孔
3放射線源選択装置
4照射口
5プランジャー管
6プランジャー放射線源操作棒
61ハンドル
62漏れ止めリング
63上部遮蔽体
64放射線源箱
65下部遮蔽体
66放射線源
7放射線源箱
8放射線源
9機械腕
10レバー式位置決め装置
11制御装置
12照射位置
13照射予備位置
14ガスパイプ通路
15エアポンプ
16放射線源室
17シリンダー通路
18シリンダー 1 Radiation source shield
2 Longitudinal hole for accommodating radiation source selection device
3 Radiation source selection device
4 Irradiation port
5 Plunger tube
6 Plunger radiation source control rod
61 handle
62 Seal ring
63 Upper shield
64 radiation source box
65 lower shield
66 Radiation source
7 Radiation source box
8 Radiation sources
9 mechanical arms
10 lever type positioning device
11 Control device
12 Irradiation position
13 Pre-irradiation position
14 Gas pipe passage
15 air pump
16 Radiation source room
17 cylinder passage
18 cylinders

Claims (10)

回転操作により放射線源を交換可能な複数の放射線源を備えた照射装置であって、
放射線源遮蔽体、回転式放射線源選択装置、プランジャー放射線源操作棒、制御装置からなり、
放射線源遮蔽体は、回転式放射線源選択装置収容縦孔、放射線源照射口を備えて、該回転式放射線源選択装置収容縦孔に回転式放射線源選択装置を垂直軸周りに回転可能に収容し、
回転式放射線源選択装置は、機械腕、レバー式位置決め装置、制御装置、上記放射線源照射口に相対する照射位置及び該照射口から退避した予備照射位置を具えたプランジャー管及びプランジャー放射線源操作棒を収容する１以上の縦孔を設けて、これらの縦孔の一部或いは全部の各々に１本のプランジャー管及びプランジャー放射線源操作棒を収容し、
プランジャー放射線源操作棒は、放射線源を収容したプランジャー放射線源箱、ハンドル、漏れ止めリング、上部遮蔽体、放射線源箱及び下部遮蔽体からなり、
制御装置は、タイマー、変位コントロール、微動作操作装置からなる、
ことを特徴とする複数の放射線源を備えた放射線照射装置。 An irradiation apparatus including a plurality of radiation sources capable of exchanging radiation sources by rotating operation,
It consists of a radiation source shield, a rotary radiation source selection device, a plunger radiation source operation rod, and a control device.
The radiation source shield includes a rotary radiation source selection device accommodation vertical hole and a radiation source irradiation port, and the rotary radiation source selection device accommodation vertical hole accommodates the rotary radiation source selection device so as to be rotatable about a vertical axis. And
A rotary radiation source selection device includes a mechanical arm, a lever type positioning device, a control device, a plunger tube and a plunger radiation source having an irradiation position relative to the radiation source irradiation port and a preliminary irradiation position retracted from the irradiation port. One or more vertical holes for accommodating the operation rods are provided, and one plunger tube and a plunger radiation source operation rod are accommodated in each of some or all of these vertical holes,
The plunger radiation source operation rod is composed of a plunger radiation source box containing a radiation source, a handle, a leakage prevention ring, an upper shield, a radiation source box, and a lower shield.
The control device consists of a timer, displacement control, and fine motion operation device.
A radiation irradiation apparatus comprising a plurality of radiation sources. 上記放射線源遮蔽体は、上面に該回転式放射線源選択装置収容縦孔を開口して、その内部に回転式放射線源選択装置を収容すると共に、外側壁に放射線を放射する照射口を設けてなり、
下方には回転式放射線源選択装置に対する動力伝送軸を挿通する穴を設けてなる、ことを特徴とする請求項１記載の複数の放射線源を備えた放射線照射装置。 The radiation source shield has a rotary radiation source selection device accommodation vertical hole opened on an upper surface thereof, a rotary radiation source selection device accommodated therein, and an irradiation port for emitting radiation on an outer wall. Become
The radiation irradiation apparatus having a plurality of radiation sources according to claim 1, wherein a hole for inserting a power transmission shaft for the rotary radiation source selection apparatus is provided below. 上記選択回転式放射線源選択装置は、回転軸となる垂直軸の周りに配列された一以上のプランジャー管にプランジャー放射線源操作棒を収容することにより、その交換操作を装置上方からの操作により行うことを可能としたことを特徴とする請求項１記載の複数の放射線源を備えた放射線照射装置。 The selective rotary radiation source selection device accommodates a plunger radiation source operation rod in one or more plunger tubes arranged around a vertical axis that serves as a rotation axis, thereby performing an exchange operation from above the device. The radiation irradiating apparatus comprising a plurality of radiation sources according to claim 1, wherein the radiation irradiating apparatus comprises a plurality of radiation sources. 上記プランジャー放射線源操作棒は、機械腕により把持されるハンドル、及びそれ以下順に、漏れ止めリング、上部遮蔽体、放射線源箱及び下部遮蔽体から構成され、プランジャー管の上方から回転式放射線源選択装置中に挿入可能としたことを特徴とする請求項１記載の複数の放射線源を備えた放射線照射装置。 The plunger radiation source operation rod is composed of a handle gripped by a mechanical arm, and a leak-proof ring, an upper shield, a radiation source box, and a lower shield in that order, and the rotary radiation from above the plunger tube. The radiation irradiation apparatus having a plurality of radiation sources according to claim 1, wherein the radiation irradiation apparatus can be inserted into the source selection apparatus. 上記放射線源照射口は区画された構造からなり、プランジャー放射線源操作棒下方の遮蔽作用の不十分な遮蔽体を通る他の放射線源などからの散乱放射線の漏洩を防止してなることを特徴とする請求項１記載の複数の放射線源を備えた放射線照射装置。 The radiation source irradiation port has a partitioned structure, and prevents leakage of scattered radiation from other radiation sources passing through a shield with insufficient shielding action under the plunger radiation source operation rod. A radiation irradiation apparatus comprising a plurality of radiation sources according to claim 1. 上記機械腕によりプランジャー放射線源操作棒を上下昇降操作することによって、放射線源を照射口に対して位置決めすることを特徴とする請求項１記載の複数の放射線源を備えた放射線照射装置。 By vertically lifting operation the plunger radiation source operating rod by the mechanical arm, radiation apparatus having a plurality of radiation source according to claim 1, wherein the positioning against the radiation source to the irradiation port. 上記放射線源遮蔽体、回転式放射線源選択装置、及びプランジャー放射線源操作棒を重金属材料でカバーしてなることを特徴とする請求項１記載の複数の放射線源を備えた放射線照射装置。 The radiation irradiation apparatus having a plurality of radiation sources according to claim 1, wherein the radiation source shield, the rotary radiation source selection device, and the plunger radiation source operation rod are covered with a heavy metal material. 上記レバー式位置決め装置は、その微同調操作により放射線源選択装置の位置決めをより正確にすることを可能としたことを特徴とする請求項１記載の複数の放射線源を備えた放射線照射装置。 2. The radiation irradiating apparatus having a plurality of radiation sources according to claim 1, wherein the lever type positioning apparatus makes it possible to make the positioning of the radiation source selecting apparatus more accurate by the fine tuning operation. 上記機械腕は、上記のプランジャー放射線源操作棒を縦孔に収容した構成により、停電などによって動力源を失っても重力作用により放射線源を照射予備位置に復帰可能としたことを特徴とする請求項１記載の複数の放射線源を備えた放射線照射装置。 The mechanical arm has a configuration in which the plunger radiation source operation rod is accommodated in a vertical hole, and even if the power source is lost due to a power failure or the like , the radiation source can be returned to the irradiation preliminary position by a gravitational action. A radiation irradiation apparatus comprising a plurality of radiation sources according to claim 1. 上記制御装置は、放射線源照射時間、放射線源選択装置の起動、機械腕の操作を行うことを特徴とする請求項１記載の複数の放射線源を備えた放射線照射装置。

The radiation control apparatus having a plurality of radiation sources according to claim 1, wherein the control device performs a radiation source irradiation time, activation of the radiation source selection device, and operation of a mechanical arm.

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