JP2023058366A - Inspection device - Google Patents

Inspection device Download PDF

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JP2023058366A
JP2023058366A JP2021168359A JP2021168359A JP2023058366A JP 2023058366 A JP2023058366 A JP 2023058366A JP 2021168359 A JP2021168359 A JP 2021168359A JP 2021168359 A JP2021168359 A JP 2021168359A JP 2023058366 A JP2023058366 A JP 2023058366A
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inspection
housing
inspection object
opening
conveyor
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和朗 ▲高▼山
Kazuo Takayama
栄嗣 川崎
Eiji Kawasaki
享司 大橋
Takashi Ohashi
武 北島
Takeshi Kitajima
大佑 児矢野
Daisuke Koyano
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Nippon Signal Co Ltd
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Nippon Signal Co Ltd
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Abstract

To provide a compact inspection device with a relatively simple structure.SOLUTION: An inspection device 1 comprises: a conveyor 17 which conveys inspection objects P1 and P2 in a horizontal direction toward a housing 11; a conveyor 18 which conveys the inspection objects P1 and P2 in the horizontal direction toward a downstream side of the housing 11; the housing 11 which shields an X-ray; a lead curtain 12 which is arranged so as to block an inlet of the housing 11; a lead curtain 13 which is arranged so as to block an outlet of the housing 11; a lifting device 16 which lifts the inspection object P in the housing 11; and an X-ray irradiation unit 14 and a panel sensor 15 which capture an X-ray transmission image of the inspection object P when the inspection object P is in an inspection area Q in the housing 11. The lead curtain 12 hangs down to block the inlet of the housing 11 when the inspection object P descends toward the inspection area Q.SELECTED DRAWING: Figure 2

Description

本発明は、検査対象物を透過するＸ線等の検査線を撮影して検査対象物の内容物を検査するための検査装置に関する。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection apparatus for inspecting contents of an inspection object by photographing inspection rays such as X-rays that pass through the inspection object.

Ｘ線等の電磁波を検査線として検査対象物に照射し、検査対象物を透過した検査線の強度をライン型又はパネル型のセンサで感知することで検査対象物の内容物の形状を表す画像を生成し、検査対象物を開くことなく（すなわち、非破壊で）検査可能とする検査装置（以下、非破壊検査装置という）が普及している。 An image that represents the shape of the contents of the inspection object by irradiating the inspection object with electromagnetic waves such as X-rays as inspection rays and sensing the intensity of the inspection rays that pass through the inspection object with a line-type or panel-type sensor. , and can be inspected without opening the inspection object (that is, non-destructively) (hereinafter referred to as a non-destructive inspection apparatus) is widespread.

図８は、一般的な非破壊検査装置の一例である検査装置９の構成を例示した図である。検査装置９は、水平方向に検査対象物Ｐを搬送するコンベア９１と、コンベア９１の一部を覆うようにコンベア９１の搬送路の途中に配置された筐体９２と、筐体９２内に配置された検査線照射部９３及び検査線センサ９４と、検査対象物Ｐの搬送路における筐体９２の上流側の壁面に設けられた開口部（入口）を塞ぐように配置された鉛カーテン９５と、筐体９２の下流側の壁面に設けられた開口部（出口）を塞ぐように配置された鉛カーテン９６を備える。 FIG. 8 is a diagram illustrating the configuration of an inspection device 9, which is an example of a general nondestructive inspection device. The inspection device 9 includes a conveyor 91 that conveys an inspection object P in the horizontal direction, a housing 92 that is arranged in the middle of the conveying path of the conveyor 91 so as to cover a part of the conveyor 91, and a housing 92 that is arranged in the housing 92. and an inspection line irradiation unit 93 and an inspection line sensor 94, and a lead curtain 95 arranged so as to close an opening (entrance) provided in the wall surface on the upstream side of the housing 92 in the transport path of the inspection object P. , a lead curtain 96 arranged so as to close an opening (exit) provided in the wall surface of the housing 92 on the downstream side.

検査線照射部９３は検査線を照射する装置である。検査線センサ９４は、検査線照射部９３が照射し、筐体９２内の検査対象物Ｐを透過した検査線を感知するパネルセンサ（又はラインセンサ）である。そのため、検査線照射部９３と検査線センサ９４は、コンベア９１を挟んで上下の対向する位置に配置されている。 The inspection ray irradiation unit 93 is a device that irradiates an inspection ray. The inspection line sensor 94 is a panel sensor (or line sensor) that senses the inspection line emitted by the inspection line irradiation unit 93 and transmitted through the inspection object P in the housing 92 . Therefore, the inspection line irradiation unit 93 and the inspection line sensor 94 are arranged at positions facing each other with the conveyor 91 interposed therebetween.

ところで、非破壊検査装置において用いられる検査線の多く（例えば、Ｘ線）は、人体が多量に被爆すると悪影響を受ける。従って、検査対象物に対する検査線の照射は、検査線を通さない物質（例えば、鉛等の重金属）で覆われた空間（以下、検査空間という）内で行われる必要がある。そのため、筐体９２は、例えば内側面が鉛で覆われている。 By the way, many of the inspection rays (for example, X-rays) used in non-destructive inspection devices are adversely affected when the human body is exposed to a large amount of radiation. Therefore, it is necessary to irradiate the inspection object with the inspection line in a space (hereinafter referred to as an inspection space) covered with a substance (for example, heavy metal such as lead) that does not allow the inspection line to pass through. Therefore, the inner surface of the housing 92 is covered with lead, for example.

鉛カーテン９５及び鉛カーテン９６は、筐体９２に設けられた開口部を塞ぐように、開口部の上縁部から垂れ下がる暖簾のように配置された、複数の短冊状の鉛入りゴムシートである。鉛カーテン９５及び鉛カーテン９６は、コンベア９１により搬送される検査対象物Ｐによって上流側から下流側に向い押されて撓んで、検査空間に対する検査対象物Ｐの出入りを許容しつつ、検査対象物Ｐが開口部を通過した後は再び、開口部を塞ぐように垂れ下がる。その結果、検査空間内において検査線が照射される際に、筐体９２の開口部から外部へ漏れ出る検査線の量が低減される。 The lead curtain 95 and the lead curtain 96 are a plurality of strip-shaped lead-containing rubber sheets that are arranged like a noren hanging down from the upper edge of the opening so as to close the opening provided in the housing 92. . The lead curtain 95 and the lead curtain 96 are pushed from the upstream side to the downstream side by the inspection object P conveyed by the conveyor 91 and are bent, allowing the inspection object P to enter and exit the inspection space. After P passes through the opening, it hangs down again to close the opening. As a result, when the inspection line is irradiated in the inspection space, the amount of the inspection line leaking out from the opening of the housing 92 is reduced.

上述した構成の検査装置９においては、筐体９２の大きさを、検査可能な最大の検査対象物の大きさよりかなり大きくする必要がある、という欠点がある。図９は、その欠点を説明するための図である。図９に示す検査装置９においては、筐体９２の、検査対象物Ｐの搬送方向における長さＭ（以下、検査対象物Ｐの搬送方向における長さを単に長さという）の大きさが十分でなく、検査対象物Ｐが搬送方向における筐体９２内の概ね中央、すなわち、検査を受ける位置に達した状態で、鉛カーテン９５の裾がまだ検査対象物Ｐの上に乗っており、筐体９２の入口（上流側の開口部）が鉛カーテン９５により塞がれていない。従って、この状態で検査が行われると、大量の検査線が筐体９２の入口から外部へ漏れ出てしまう。そのような問題が生じないように、筐体９２の長さＭをもっと長くしなければならない。なお、必要な筐体９２の長さＭは、検査装置９で検査可能な最大サイズの検査対象物Ｐの長さ及び高さ、鉛カーテン９５の高さ方向の長さ、鉛カーテン９５の可撓性の大きさ等により変化する。 The inspection apparatus 9 configured as described above has the disadvantage that the size of the housing 92 must be considerably larger than the size of the largest inspection object that can be inspected. FIG. 9 is a diagram for explaining the drawback. In the inspection apparatus 9 shown in FIG. 9, the length M of the housing 92 in the transport direction of the inspection object P (hereinafter, the length in the transport direction of the inspection object P is simply referred to as the length) is sufficiently large. However, the hem of the lead curtain 95 is still on the inspection object P when the inspection object P has reached the center of the housing 92 in the transport direction, that is, the position to be inspected. The inlet (upstream opening) of the body 92 is not blocked by the lead curtain 95 . Therefore, if an inspection is performed in this state, a large amount of inspection lines will leak out from the entrance of the housing 92 . To avoid such problems, the length M of the housing 92 should be made longer. The required length M of the housing 92 is the length and height of the inspection object P of the maximum size that can be inspected by the inspection device 9, the length of the lead curtain 95 in the height direction, and the length of the lead curtain 95. It changes depending on the degree of flexibility and the like.

また、上述した構成の検査装置９においては、複数の検査対象物を順次、検査していく場合の、先行する検査対象物を後続の検査対象物の間隔を、検査可能な最大の検査対象物の長さよりかなり広くする必要がある、という欠点がある。図１０は、その欠点を説明するための図である。図１０は、先行する検査対象物Ｐ１と後続の検査対象物Ｐ２の間隔Ｄが狭すぎて、検査対象物Ｐ２が検査を受ける位置に達した状態で、鉛カーテン９６の裾がまだ検査対象物Ｐ１の上に乗っており、筐体９２の出口（下流側の開口部）が鉛カーテン９６により塞がれていない。従って、この状態で検査が行われると、大量の検査線が筐体９２の出口から外部へ漏れ出てしまう。そのような問題が生じないように、検査対象物Ｐ１と検査対象物Ｐ２の間隔Ｄをもっと広くしなければならない。なお、必要な検査対象物Ｐ１と検査対象物Ｐ２の間隔Ｄは、検査装置９で検査可能な最大サイズの検査対象物Ｐの長さ及び高さ、鉛カーテン９６の高さ方向の長さ、鉛カーテン９６の可撓性の大きさ等により変化する。 In the inspection apparatus 9 configured as described above, when a plurality of inspection objects are sequentially inspected, the interval between the preceding inspection object and the succeeding inspection object is set to the maximum inspectable inspection object. has the disadvantage that it must be much wider than the length of FIG. 10 is a diagram for explaining the drawback. FIG. 10 shows that the interval D between the preceding inspection object P1 and the succeeding inspection object P2 is too narrow, and the inspection object P2 has reached the position to be inspected, and the hem of the lead curtain 96 is still on the inspection object. It is on top of P1, and the exit (opening on the downstream side) of the housing 92 is not blocked by the lead curtain 96. Therefore, if an inspection is performed in this state, a large amount of inspection lines will leak out from the exit of the housing 92 . To avoid such a problem, the distance D between the inspection object P1 and the inspection object P2 must be made wider. In addition, the necessary distance D between the inspection object P1 and the inspection object P2 is the length and height of the inspection object P of the maximum size that can be inspected by the inspection device 9, the length of the lead curtain 96 in the height direction, It changes depending on the flexibility of the lead curtain 96 and the like.

筐体９２の長さＭが長くなる程、検査装置９のサイズは大きくなり、検査装置９の設置のために広い空間が必要となる。また、先行する検査対象物と後続の検査対象物の間隔Ｄが広い程、必要なコンベア９１の長さが長くなり、検査装置９の設置のために広い空間が必要となる。 As the length M of the housing 92 increases, the size of the inspection device 9 increases, and a large space is required for installation of the inspection device 9 . In addition, the longer the distance D between the preceding inspection object and the succeeding inspection object, the longer the required length of the conveyor 91 becomes, requiring a wider space for installation of the inspection device 9 .

検査装置を小さくするための様々な工夫が提案されている。例えば、特許文献１には、撮影室の上流側に設けられた搬入準備室に外部から水平方向に搬入された検査対象物を垂直方向に移動した後、水平方向に搬送して撮影室に投入するトラバーサと、撮影室の下流側に設けられた搬出準備室に撮影室から水平方向に搬入された検査対象物を垂直方向に移動した後、水平方向に搬送して外部に排出するトラバーサを備え、各トラバーサの検査対象物の搬入口と搬出口の一方から他方に検査線が達しないように遮蔽部材を設けた構成の検査装置が記載されている。 Various ideas have been proposed to make the inspection apparatus smaller. For example, in Patent Document 1, an object to be inspected is transported horizontally from the outside into a carry-in preparation room provided upstream of an imaging room, moved vertically, and then transported horizontally to enter the imaging room. and a traverser that moves the inspection object horizontally transported from the imaging room to the unloading preparation room provided downstream of the imaging room, then transports it horizontally and discharges it to the outside. , an inspection apparatus provided with a shielding member so that an inspection line does not reach from one of the entrance and the exit of an object to be inspected of each traverser to the other.

特開２０１７－２１９５０８号公報Japanese Patent Application Laid-Open No. 2017-219508

特許文献１に記載の検査装置によれば、上述した検査装置９と比較し、検査装置のサイズを小さくできる。しかしながら、特許文献１に記載の検査装置は、上流側及び下流側にトラバーサを要し、更に、それらのトラバーサに対する検査対象物の搬入及び搬出を行うための搬送機構を要する。すなわち、特許文献１に記載の検査装置は、例えば上述した検査装置９と比較し、著しく複雑な構造であり、コストや故障率の上昇等の問題がある。 According to the inspection device described in Patent Document 1, the size of the inspection device can be reduced as compared with the inspection device 9 described above. However, the inspection apparatus described in Patent Literature 1 requires traversers on the upstream and downstream sides, and further requires a transport mechanism for carrying in and out of inspection objects to and from these traversers. That is, the inspection apparatus described in Patent Document 1 has a significantly more complicated structure than, for example, the inspection apparatus 9 described above, and has problems such as an increase in cost and failure rate.

上記の事情に鑑み、本発明は、比較的単純な構造でありながらコンパクトな検査装置を提供する。 In view of the above circumstances, the present invention provides a compact inspection device with a relatively simple structure.

本発明は、搬送面上を水平方向に搬送される検査対象物を昇降台により前記搬送面の下方に位置する検査領域と前記搬送面との間で移動させ、前記昇降台の下降に伴い前記搬送面に生じる開口を覆う又は塞ぐように検査線を遮蔽する遮蔽部材を移動させる検査装置を第１の態様として提案する。 According to the present invention, an object to be inspected that is horizontally transported on a transport surface is moved by an elevator between an inspection area located below the transport surface and the transport surface. A first aspect of the present invention proposes an inspection apparatus that moves a shielding member that shields an inspection line so as to cover or block an opening that occurs on a conveying surface.

第１の態様に係る検査装置において必要となる筐体の長さは、検査可能な最大の検査対象物の長さより少し大きい程度でよい。また、第１の態様に係る検査装置において、先行する検査対象物と後続の検査最小物の間隔は、筐体の長さの半分より少し長い程度でよい。従って、第１の態様に係る検査装置はサイズが小さくできる。 The length of the housing required in the inspection apparatus according to the first aspect may be slightly longer than the length of the maximum inspection object that can be inspected. In addition, in the inspection apparatus according to the first aspect, the distance between the preceding inspection object and the subsequent minimum inspection object may be slightly longer than half the length of the housing. Therefore, the size of the inspection apparatus according to the first aspect can be reduced.

上記の第１の態様に係る検査装置において、前記遮蔽部材は検査対象物の搬送方向における前記開口の上流側縁部において吊られ、検査対象物の搬送に伴い当該検査対象物により押し上げられ、当該検査対象物の下降に伴い垂れ下がる幕体である、という構成が第２の態様として採用されてもよい。 In the inspection apparatus according to the first aspect, the shielding member is suspended at the upstream edge of the opening in the conveying direction of the inspection object, and is pushed up by the inspection object as the inspection object is transported. A configuration in which the curtain body hangs down as the inspection target descends may be adopted as a second aspect.

上記の第１の態様に係る検査装置において、前記昇降台の下降に伴い検査対象物の搬送方向における前記開口の上流側縁部において壁を成すように前記遮蔽部材を下降させ、前記昇降台の上昇に伴い前記遮蔽部材を上昇させる、という構成が第３の態様として採用されてもよい。 In the inspection apparatus according to the first aspect described above, the shielding member is lowered so as to form a wall at the upstream edge of the opening in the conveying direction of the inspection object as the lifting table descends, and the lifting table moves downward. A configuration in which the shielding member is lifted as it rises may be employed as a third aspect.

第２又は第３の態様に係る検査装置によれば、開口を覆うように遮蔽部材を移動するための機構、及び、開口を覆っている遮蔽部材を移動して開口を開くための機構を別途、設ける必要がない。 According to the inspection apparatus according to the second or third aspect, the mechanism for moving the shielding member so as to cover the opening and the mechanism for moving the shielding member covering the opening to open the opening are separately provided. , need not be provided.

上記の第１の態様に係る検査装置において、前記昇降台の下降に伴い水平方向に拡がる板体の前記遮蔽部材を下降させて前記開口を塞ぎ、前記昇降台の上昇に伴い前記遮蔽部材を上昇させる、という構成が第４の態様として採用されてもよい。 In the inspection apparatus according to the first aspect, as the platform descends, the plate-shaped shielding member extending in the horizontal direction is lowered to close the opening, and the shielding member is raised as the platform rises. may be employed as a fourth mode.

第４の態様に係る検査装置によれば、開口を塞ぐように遮蔽部材を移動するための機構、及び、開口を塞いでいる遮蔽部材を移動して開口を開くための機構を別途、設ける必要がない。 According to the inspection apparatus according to the fourth aspect, it is necessary to separately provide a mechanism for moving the shielding member so as to close the opening and a mechanism for moving the shielding member closing the opening to open the opening. There is no

上記の第１乃至第４のいずれかの態様に係る検査装置において、前記遮蔽部材が前記開口を覆う又は塞ぐ位置にあるか否かを検知し、前記遮蔽部材が当該位置にある場合に限り検査線を照射する、という構成が第５の態様として採用されてもよい。 In the inspection apparatus according to any one of the first to fourth aspects described above, it is detected whether or not the shielding member is in a position that covers or closes the opening, and inspection is performed only when the shielding member is in that position. A configuration of irradiating rays may be employed as a fifth aspect.

第５の態様に係る検査装置によれば、何らかの理由により開口が覆われていない、又は、開口が塞がれていない状態で検査線が照射され、検査線が開口から外部へ漏れ出る、という不都合が確実に回避される。 According to the inspection apparatus according to the fifth aspect, the inspection line is emitted in a state where the opening is not covered or blocked for some reason, and the inspection line leaks out from the opening. Inconvenience is definitely avoided.

一実施形態に係る検査装置の全体構成を示した図。The figure which showed the whole structure of the test|inspection apparatus which concerns on one Embodiment. 一実施形態に係る検査装置の挙動を説明するための図。FIG. 4 is a diagram for explaining the behavior of the inspection device according to one embodiment; 一実施形態に係る検査装置の挙動を説明するための図。FIG. 4 is a diagram for explaining the behavior of the inspection device according to one embodiment; 一変形例に係る検査装置の構成を模式的に示した図。The figure which showed typically the structure of the inspection apparatus which concerns on a modification. 一変形例に係る検査装置の構成を模式的に示した図。The figure which showed typically the structure of the inspection apparatus which concerns on a modification. 一変形例に係る検査装置の構成を模式的に示した図。The figure which showed typically the structure of the inspection apparatus which concerns on a modification. 一変形例に係る検査装置の構成を模式的に示した図。The figure which showed typically the structure of the inspection apparatus which concerns on a modification. 従来技術に係る検査装置の構成を例示した図。The figure which illustrated the structure of the inspection apparatus which concerns on a prior art. 従来技術に係る検査装置の欠点を説明するための図。FIG. 10 is a diagram for explaining a defect of an inspection device according to a conventional technique; 従来技術に係る検査装置の欠点を説明するための図。FIG. 10 is a diagram for explaining a defect of an inspection device according to a conventional technique;

［実施形態］
以下に、本発明の一実施形態に係る検査装置１を説明する。図１は、検査装置１の全体構成を示した図である。ただし、図１においては、実際には外から見えない、筐体１１内やコンベア１７及びコンベア１８の下方を覆う壁体の内側、筐体１１の向こう側等に配置されている構成部も図示している。 [Embodiment]
An inspection apparatus 1 according to an embodiment of the present invention will be described below. FIG. 1 is a diagram showing the overall configuration of an inspection apparatus 1. As shown in FIG. However, FIG. 1 also shows components that are not actually visible from the outside and that are arranged inside the housing 11, inside walls that cover the conveyors 17 and 18, and on the other side of the housing 11. showing.

筐体１１は、図１において太線で示される構成部であり、Ｘ線撮影装置を構成するＸ線照射部１４及びパネルセンサ１５と、昇降装置１６とを収容する箱状の部材である。筐体１１は、Ｘ線撮影装置が照射するＸ線（検査線の一例）が外部に漏れ出ないように、例えば内側が鉛で覆われている。図１に例示の筐体１１は、Ｘ線照射部１４とパネルセンサ１５の間に必要な距離を確保するために、コンベア１７及びコンベア１８の高さよりも上に位置する空間Ｓ１を形成する部分と比較し、コンベア１７及びコンベア１８の高さよりも下に位置する空間Ｓ２を形成する部分が、搬送方向において長くなっている。ただし、筐体１１の形状はこれに限られない。 The housing 11 is a component indicated by a thick line in FIG. 1, and is a box-shaped member that accommodates the X-ray irradiation unit 14 and the panel sensor 15 that constitute the X-ray imaging apparatus, and the lifting device 16 . The inside of the housing 11 is covered with lead, for example, so that X-rays (an example of inspection rays) emitted by the X-ray imaging apparatus do not leak outside. The housing 11 illustrated in FIG. 1 has a portion forming a space S1 positioned above the height of the conveyor 17 and the conveyor 18 in order to secure a necessary distance between the X-ray irradiation unit 14 and the panel sensor 15. , the portion forming the space S2 located below the height of the conveyor 17 and the conveyor 18 is longer in the transport direction. However, the shape of the housing 11 is not limited to this.

筐体１１には、上流側（図１における左側）の、コンベア１７の高さよりも上の側壁に、検査対象物Ｐの入口となる開口部が設けられている。この入口を塞ぐように、鉛カーテン１２が開口部の上縁から下に垂れ下がるように筐体１１に取り付けられている。鉛カーテン１２は、短冊状の鉛を含んだゴム製の複数の幕体で構成され、暖簾のように、筐体１１外から筐体１１内への検査対象物Ｐの搬送に伴い検査対象物Ｐにより押し上げられ撓み、検査対象物Ｐが筐体１１内へと入ることを許容する。そして、鉛カーテン１２は、検査対象物Ｐが筐体１１の入口を通過し昇降装置１６の昇降台１６１に載った後、昇降台１６１の下降に伴い下降すると、元の形状に戻って入口を塞ぐ。鉛カーテン１２は、筐体１１内でＸ線撮影装置がＸ線を照射する際に、筐体１１の入口から外部に漏れ出るＸ線の量を低減する。 The housing 11 is provided with an opening serving as an entrance for the inspection object P in a side wall on the upstream side (left side in FIG. 1) above the height of the conveyor 17 . A lead curtain 12 is attached to the housing 11 so as to hang down from the upper edge of the opening so as to block the entrance. The lead curtain 12 is composed of a plurality of strip-shaped rubber curtains containing lead, and like a noren, the inspection object P moves from outside the housing 11 into the housing 11 as the inspection object P is conveyed. Pushed up by P, it bends and allows inspection object P to enter into housing 11 . After the inspection object P passes through the entrance of the housing 11 and is placed on the lifting platform 161 of the lifting device 16, the lead curtain 12 descends as the lifting platform 161 descends, returning to its original shape to clear the entrance. Block. The lead curtain 12 reduces the amount of X-rays leaking outside from the entrance of the housing 11 when the X-ray imaging apparatus irradiates the housing 11 with X-rays.

また、筐体１１には、下流側（図１における右側）の、コンベア１８の高さよりも上の側壁に、検査対象物Ｐの出口となる開口部が設けられている。この出口を塞ぐように、鉛カーテン１３が開口部の上縁から下に垂れ下がるように筐体１１に取り付けられている。鉛カーテン１３の構造は鉛カーテン１２と同様であり、筐体１１内から筐体１１外への検査対象物Ｐの搬送に伴い検査対象物Ｐにより押し上げられ撓み、検査対象物Ｐが筐体１１外へと出ることを許容する。そして、鉛カーテン１３は、検査対象物Ｐが筐体１１の出口を通過しコンベア１８に載った後、筐体１１よりも下流側に搬送されると、元の形状に戻って出口を塞ぐ。鉛カーテン１３は、筐体１１内でＸ線撮影装置がＸ線を照射する際に、筐体１１の出口から外部に漏れ出るＸ線の量を低減する。 Further, the housing 11 is provided with an opening serving as an exit for the inspection object P in a side wall on the downstream side (right side in FIG. 1) above the height of the conveyor 18 . A lead curtain 13 is attached to the housing 11 so as to hang down from the upper edge of the opening so as to block the exit. The structure of the lead curtain 13 is the same as that of the lead curtain 12. As the inspection target P is transported from the inside of the housing 11 to the outside of the housing 11, it is pushed up by the inspection target P and bent. Allow to go outside. After the inspection object P passes through the exit of the housing 11 and is placed on the conveyor 18, the lead curtain 13 returns to its original shape and closes the exit when it is conveyed to the downstream side of the housing 11.例文帳に追加The lead curtain 13 reduces the amount of X-rays leaking outside from the exit of the housing 11 when the X-ray imaging apparatus irradiates the housing 11 with X-rays.

筐体１１内には、Ｘ線撮影装置を構成するＸ線照射部１４とパネルセンサ１５が配置されている。Ｘ線照射部１４は、筐体１１の上流側の、コンベア１７の高さよりも下の側壁の内側面上に配置されており、パネルセンサ１５に向かい、例えば円錐形状に拡がるＸ線を照射する。パネルセンサ１５は、例えば、筐体１１の下流側の、コンベア１８の高さよりも下の側壁の内側面上に配置されており、平面上に並べて配置された多数の受光素子を有し、それらの受光素子によりＸ線照射部１４から照射され検査対象物Ｐを透過したＸ線の強度を測定することによって、Ｘ線透過画像を表す信号を生成する。 An X-ray irradiation unit 14 and a panel sensor 15 that constitute an X-ray imaging apparatus are arranged in the housing 11 . The X-ray irradiation unit 14 is arranged on the inner surface of the sidewall below the height of the conveyor 17 on the upstream side of the housing 11, and irradiates the panel sensor 15 with X-rays that spread, for example, in a conical shape. . The panel sensor 15 is arranged, for example, on the inner surface of the sidewall below the height of the conveyor 18 on the downstream side of the housing 11, and has a large number of light receiving elements arranged side by side on a plane. A signal representing an X-ray transmission image is generated by measuring the intensity of the X-ray emitted from the X-ray irradiation unit 14 and transmitted through the inspection object P by the light receiving element.

なお、Ｘ線照射部１４とパネルセンサ１５の配置は、Ｘ線照射部１４が照射するＸ線が、後述するように昇降装置１６により検査領域まで移動された検査対象物Ｐに向かい、検査対象物Ｐを透過したＸ線がパネルセンサ１５に向かう限り、どのような配置であってもよい。 The arrangement of the X-ray irradiation unit 14 and the panel sensor 15 is such that the X-rays irradiated by the X-ray irradiation unit 14 are directed toward the inspection object P moved to the inspection area by the lifting device 16 as will be described later. As long as the X-rays that have passed through the object P are directed toward the panel sensor 15, any arrangement may be used.

昇降装置１６は、筐体１１内に入ってきた検査対象物Ｐを昇降する装置である。昇降装置１６は、検査対象物Ｐが上に載る部材である昇降台１６１と、昇降台１６１と一体化され、昇降台１６１の上に載った検査対象物Ｐを上流側から下流側へ搬送するコンベア１６２と、昇降台１６１を昇降させる昇降機構１６３を備える。 The lifting device 16 is a device that lifts and lowers the inspection object P that has entered the housing 11 . The lifting device 16 is integrated with a lifting table 161, which is a member on which the inspection object P is placed, and the lifting table 161, and conveys the inspection object P placed on the lifting table 161 from the upstream side to the downstream side. A conveyor 162 and a lifting mechanism 163 for lifting the lifting table 161 are provided.

コンベア１７は、筐体１１の上流側に配置され、検査対象物Ｐを筐体１１に向かい搬送する装置である。コンベア１８は、筐体１１の下流側に配置され、筐体１１から排出される検査対象物Ｐを下流側に搬送する装置である。 The conveyor 17 is a device that is arranged on the upstream side of the housing 11 and conveys the inspection object P toward the housing 11 . The conveyor 18 is a device that is arranged on the downstream side of the housing 11 and conveys the inspection target P discharged from the housing 11 to the downstream side.

本願において、搬送面とは、検査対象物Ｐがコンベア１７、コンベア１６２及びコンベア１８によって上流側から下流側へと搬送される際に検査対象物Ｐの底面が接する面を意味する。 In the present application, the conveying surface means the surface with which the bottom surface of the inspection object P contacts when the inspection object P is transported from the upstream side to the downstream side by the conveyors 17, 162, and 18. FIG.

コントローラ１９は、Ｘ線照射部１４、パネルセンサ１５、昇降装置１６、コンベア１７、コンベア１８の動作を制御するデータ処理装置である。コントローラ１９の制御に従い動作するＸ線照射部１４、パネルセンサ１５、昇降装置１６、コンベア１７、コンベア１８の挙動については後述する。 The controller 19 is a data processing device that controls the operations of the X-ray irradiation unit 14 , panel sensor 15 , lifting device 16 , conveyor 17 and conveyor 18 . Behaviors of the X-ray irradiation unit 14, the panel sensor 15, the lifting device 16, the conveyor 17, and the conveyor 18 that operate under the control of the controller 19 will be described later.

コントローラ１９は、端末装置１０と有線又は無線でデータ通信を行う。コントローラ１９は、パネルセンサ１５が生成する信号を用いてＸ線透過画像を表すＸ線透過画像データを生成し、生成したＸ線透過画像データを端末装置１０に送信する。 The controller 19 performs wired or wireless data communication with the terminal device 10 . The controller 19 uses the signal generated by the panel sensor 15 to generate X-ray transmission image data representing an X-ray transmission image, and transmits the generated X-ray transmission image data to the terminal device 10 .

端末装置１０は、検査員が使用する端末装置であり、コントローラ１９から送信されてくるＸ線透過画像データが表すＸ線透過画像を表示する。検査員は、端末装置１０に表示されるＸ線透過画像を見て、検査対象物Ｐに危険物等が含まれていないかを判断する。 The terminal device 10 is a terminal device used by an inspector, and displays an X-ray transmission image represented by X-ray transmission image data transmitted from the controller 19 . The inspector looks at the X-ray transmission image displayed on the terminal device 10 and determines whether or not the inspected object P contains a dangerous substance or the like.

図２及び図３は、コントローラ１９の制御に従い動作するＸ線照射部１４、パネルセンサ１５、昇降装置１６、コンベア１７、コンベア１８の挙動（以下、検査装置１の挙動という）を説明するための図である。 2 and 3 are for explaining the behavior of the X-ray irradiation unit 14, the panel sensor 15, the lifting device 16, the conveyor 17, and the conveyor 18 (hereinafter referred to as the behavior of the inspection apparatus 1) that operate under the control of the controller 19. It is a diagram.

図２は、コンベア１７に載せ置かれた検査対象物Ｐ１が筐体１１内の検査領域Ｑまで移動し撮影されるまでの検査装置１の挙動を示している。なお、検査対象物Ｐ２は、検査対象物Ｐ１の後に検査される検査対象物である。 FIG. 2 shows the behavior of the inspection apparatus 1 until the inspection target P1 placed on the conveyor 17 moves to the inspection area Q in the housing 11 and is photographed. The inspection object P2 is an inspection object to be inspected after the inspection object P1.

図２（Ａ）は、検査対象物Ｐ１及び検査対象物Ｐ２がコンベア１７により筐体１１に向かい搬送されている状態を示している。図２（Ｂ）は、検査対象物Ｐ１がコンベア１７及びコンベア１６２により搬送され、鉛カーテン１２を押し上げながら筐体１１内に入り、昇降台１６１の上に載った状態を示している。図２（Ｂ）の状態で、鉛カーテン１２の裾は検査対象物Ｐ１の上に乗っており、筐体１１の入口が鉛カーテン１２により十分に塞がれていない。 FIG. 2A shows a state in which the inspection target P1 and the inspection target P2 are conveyed toward the housing 11 by the conveyor 17. FIG. FIG. 2B shows a state in which the inspection object P1 is transported by the conveyors 17 and 162, enters the housing 11 while pushing up the lead curtain 12, and is placed on the lift table 161. FIG. In the state shown in FIG. 2B, the bottom of the lead curtain 12 is on the inspection object P1, and the entrance of the housing 11 is not sufficiently closed by the lead curtain 12. In FIG.

図２（Ｃ）は、昇降機構１６３により昇降台１６１が下降し、昇降台１６１上の検査対象物Ｐ１がＸ線照射部１４の正面の領域である検査領域Ｑまで移動した状態を示している。図２（Ｃ）の状態において、Ｘ線照射部１４とパネルセンサ１５が検査対象物Ｐ１のＸ線透過画像を撮影する。なお、撮影されたＸ線透過画像は端末装置１０により表示され、検査員により確認される。 FIG. 2C shows a state in which the lifting table 161 is lowered by the lifting mechanism 163, and the inspection object P1 on the lifting table 161 is moved to the inspection area Q which is the area in front of the X-ray irradiation unit 14. . In the state of FIG. 2C, the X-ray irradiation unit 14 and the panel sensor 15 capture an X-ray transmission image of the inspection object P1. The radiographed X-ray transmission image is displayed on the terminal device 10 and checked by the inspector.

ところで、図２（Ｃ）に示すように、昇降台１６１が下降すると、搬送面Ｒに開口Ｏが生じる。従って、Ｘ線照射部１４がＸ線を照射すると、そのＸ線の一部は筐体１１内で反射して開口Ｏを通り、筐体１１の入口又は出口に向かう。しかしながら、昇降台１６１が下降し検査対象物Ｐ１が検査領域Ｑにある状態では、開口Ｏの上流側縁部において吊られる鉛カーテン１２が筐体１１の入口を塞ぐことで開口Ｏを覆う。また、開口Ｏの下流側縁部において吊られる鉛カーテン１３が筐体１１の出口を塞ぐことで開口Ｏを覆う。その結果、開口Ｏを通って筐体１１外へと向かうＸ線の多くが遮蔽される。そのため、筐体１１外へと漏れ出るＸ線の量が許容範囲内まで低減される。 By the way, as shown in FIG. 2C, when the lift table 161 descends, an opening O is formed in the transport surface R. As shown in FIG. Therefore, when the X-ray irradiation unit 14 emits X-rays, part of the X-rays are reflected inside the housing 11 and pass through the opening O toward the entrance or exit of the housing 11 . However, when the lift table 161 descends and the inspection object P1 is in the inspection area Q, the lead curtain 12 hung at the upstream edge of the opening O closes the entrance of the housing 11 to cover the opening O. As shown in FIG. A lead curtain 13 hung at the downstream edge of the opening O covers the opening O by blocking the exit of the housing 11 . As a result, most of the X-rays passing through the opening O to the outside of the housing 11 are blocked. Therefore, the amount of X-rays leaking out of the housing 11 is reduced to within the allowable range.

図３は、Ｘ線透過画像の撮影を終えた検査対象物Ｐ１が筐体１１から排出されるまでの検査装置１の挙動を示している。図３（Ａ）は、昇降台１６１の上昇により、検査対象物Ｐ１が検査領域Ｑから搬送面Ｒまで移動した状態を示している。 FIG. 3 shows the behavior of the inspection apparatus 1 until the inspection object P1 whose X-ray transmission image has been captured is ejected from the housing 11. As shown in FIG. FIG. 3A shows a state in which the inspection object P1 has moved from the inspection area Q to the transport surface R by raising the lift table 161. FIG.

図３（Ｂ）は、コンベア１６２及びコンベア１８の搬送により検査対象物Ｐ１が筐体１１外へと排出された状態を示している。検査対象物Ｐ１の後に検査対象物Ｐ２が待機している場合、検査対象物Ｐ１が筐体１１の中から外へと搬送される間に、コンベア１７及びコンベア１６２により、検査対象物Ｐ２が筐体１１の外から中へと搬送される。その結果、図３（Ｂ）に示す状態となる。図３（Ｂ）の状態で、鉛カーテン１２の裾は検査対象物Ｐ２の上に乗っており、筐体１１の入口が鉛カーテン１２により十分に塞がれていない。また、図３（Ｂ）の状態で、鉛カーテン１３の裾は検査対象物Ｐ１の上に乗っており、筐体１１の出口が鉛カーテン１３により十分に塞がれていない。 FIG. 3B shows a state in which the inspection object P1 is discharged out of the housing 11 by the conveyance of the conveyor 162 and the conveyor 18. FIG. When the inspection object P2 is waiting after the inspection object P1, the inspection object P2 is transferred from the inside of the housing 11 to the outside by the conveyor 17 and the conveyor 162 while the inspection object P1 is being conveyed to the outside. It is transported from outside to inside the body 11 . As a result, the state shown in FIG. 3B is obtained. In the state shown in FIG. 3B, the bottom of the lead curtain 12 is on the inspection object P2, and the entrance of the housing 11 is not sufficiently blocked by the lead curtain 12. In FIG. In addition, in the state of FIG. 3B, the bottom of the lead curtain 13 is on the inspection object P1, and the exit of the housing 11 is not sufficiently blocked by the lead curtain 13. As shown in FIG.

図３（Ｃ）は、昇降機構１６３により昇降台１６１が下降し、昇降台１６１上の検査対象物Ｐ２が検査領域Ｑまで移動した状態を示している。検査対象物Ｐ２が搬送面Ｒから検査領域Ｑまで下降する間に、検査対象物Ｐ１はコンベア１８により搬送面Ｒ上の下流側へと搬送される。その結果、図３（Ｃ）に示す状態となる。図３（Ｃ）の状態において、鉛カーテン１２が筐体１１の入口を塞ぐことで開口Ｏを覆い、また、鉛カーテン１３が筐体１１の出口を塞ぐことで開口Ｏを覆っている。その状態で、Ｘ線照射部１４とパネルセンサ１５が検査対象物Ｐ２のＸ線透過画像を撮影する。以上が、検査装置１の挙動の説明である。 FIG. 3(C) shows a state in which the lifting table 161 is lowered by the lifting mechanism 163 and the inspection object P2 on the lifting table 161 is moved to the inspection area Q. FIG. While the inspection object P2 descends from the transport surface R to the inspection area Q, the inspection object P1 is transported downstream on the transport surface R by the conveyor 18 . As a result, the state shown in FIG. 3(C) is obtained. In the state shown in FIG. 3C, the lead curtain 12 covers the entrance of the housing 11 to cover the opening O, and the lead curtain 13 blocks the exit of the housing 11 to cover the opening O. As shown in FIG. In this state, the X-ray irradiation unit 14 and the panel sensor 15 capture an X-ray transmission image of the inspection object P2. The above is the description of the behavior of the inspection apparatus 1 .

上述した検査装置１によれば、例えば従来技術に係る検査装置９と比較し、検査対象物Ｐの搬送方向における筐体の長さ及びコンベアの長さを短くできる。 According to the inspection apparatus 1 described above, the length of the housing and the length of the conveyor in the conveying direction of the inspection object P can be shortened, for example, compared with the inspection apparatus 9 according to the prior art.

［変形例］
上述した実施形態は本発明の技術的思想の範囲内で様々に変形されてよい。以下にそれらの変形例を示す。なお、以下に示す変形例の２以上が適宜組み合わされてもよい。 [Modification]
The above-described embodiments may be variously modified within the scope of the technical idea of the present invention. Modifications thereof are shown below. Note that two or more of the modifications shown below may be appropriately combined.

（１）上述した実施形態において、筐体１１の上流側の開口部（入口）は、鉛カーテン１２によって例示される、開口Ｏの上流側縁部において吊られ、検査対象物Ｐの搬送に伴い検査対象物Ｐにより押し上げられ、検査対象物Ｐの下降に伴い垂れ下がる幕体である検査線の遮蔽部材により塞がれる。そのような遮蔽部材に代えて、昇降台１６１の下降に伴い開口Ｏの上流側縁部において壁を成すように下降して筐体１１の上流側の開口部を塞ぎ、昇降台１６１の上昇に伴い上昇して塞いでいた筐体１１の上流側の開口部を開く遮蔽部材が採用されてもよい。 (1) In the above-described embodiment, the opening (entrance) on the upstream side of the housing 11 is suspended at the upstream edge of the opening O, exemplified by the lead curtain 12, and the inspection object P is conveyed. It is pushed up by the inspection object P and blocked by the inspection line shielding member, which is a curtain that hangs down as the inspection object P descends. Instead of such a shielding member, as the platform 161 descends, it descends so as to form a wall at the upstream edge of the opening O to close the opening of the housing 11 on the upstream side. A shielding member may be adopted that opens the opening on the upstream side of the housing 11 that has been closed by ascending along with it.

図４及び図５は、そのような変形例の一具体例に係る検査装置２の構成を模式的に示した図である。ただし、図５は、後述するリール２１、検査線遮蔽シート２２、エンドバー２３、レール２４Ｒ、レール２４Ｌ、索体２５Ｒ、索体２５Ｌのみを取り出して示している。なお、図５において、筐体１１の入口と昇降台１６１が破線で示されている。 4 and 5 are diagrams schematically showing the configuration of an inspection apparatus 2 according to one specific example of such a modification. However, FIG. 5 shows only the reel 21, the inspection line shielding sheet 22, the end bar 23, the rail 24R, the rail 24L, the cable 25R, and the cable 25L, which will be described later. In addition, in FIG. 5, the entrance of the housing 11 and the platform 161 are indicated by broken lines.

以下、検査装置２が上述した実施形態に係る検査装置１と異なる点を説明し、検査装置２が検査装置１と共通する点については、その説明は省略する。以下の説明において、左右は検査対象物Ｐの搬送方向に向いた場合の左右を意味する。 Hereinafter, points of difference between the inspection apparatus 2 and the inspection apparatus 1 according to the above-described embodiment will be described, and descriptions of points common to the inspection apparatus 2 and the inspection apparatus 1 will be omitted. In the following description, left and right mean left and right when the inspection object P is directed in the conveying direction.

検査装置２は、鉛カーテン１２に代えて、筐体１１内の上流側上縁部に配置された左右方向に延伸するリール２１と、リール２１に巻き取られる検査線を遮蔽する可撓性のシートである検査線遮蔽シート２２と、検査線遮蔽シート２２のリール２１に巻き取られる側とは反対側（下側）の縁辺に取り付けられた棒状体であるエンドバー２３と、エンドバー２３の右側端部の移動をガイドするレール２４Ｒと、エンドバー２３の左側端部の移動をガイドするレール２４Ｌと、一方の端部がエンドバー２３の右側端部付近に連結され、他方の端部が昇降台１６１の上流右側隅部に連結された弾性の索体である索体２５Ｒと、一方の端部がエンドバー２３の左側端部付近に連結され、他方の端部が昇降台１６１の上流左側隅部に連結された弾性の索体である索体２５Ｌを備える。 Instead of the lead curtain 12, the inspection apparatus 2 includes a reel 21 extending in the left-right direction arranged at the upper edge of the upstream side in the housing 11, and a flexible flexible tape for shielding the inspection line wound around the reel 21. An inspection line shielding sheet 22 which is a sheet, an end bar 23 which is a rod-shaped body attached to the edge of the inspection line shielding sheet 22 on the opposite side (lower side) of the side wound on the reel 21, and the right end of the end bar 23. and a rail 24L for guiding the movement of the left end of the end bar 23, one end of which is connected to the vicinity of the right end of the end bar 23, and the other end of which is connected to the lift table 161. A cord 25R, which is an elastic cord connected to the right upstream corner, has one end connected to the vicinity of the left end of the end bar 23 and the other end connected to the upstream left corner of the platform 161. It has a cord body 25L which is an elastic cord body.

リール２１には検査線遮蔽シート２２を巻き取る方向の付勢がなされており、昇降台１６１の下降に伴い、その付勢に逆う力が強まり、索体２５Ｒ及び索体２５Ｌがエンドバー２３に加える下方向の力によって検査線遮蔽シート２２がリール２１から巻き出され、筐体１１の入口を塞ぐ壁となる。また、昇降台１６１の上昇に伴い、リール２１の付勢に逆らう力が弱まり、検査線遮蔽シート２２がリール２１に巻き取られ、筐体１１の入口が開かれる。 The reel 21 is urged in the direction of winding the inspection line shielding sheet 22, and as the platform 161 descends, the force against the urge is increased, and the cords 25R and 25L are attached to the end bar 23. The inspection line shielding sheet 22 is unwound from the reel 21 by the applied downward force, and becomes a wall blocking the entrance of the housing 11 . Further, as the lift table 161 rises, the force against the biasing force of the reel 21 weakens, the inspection line shielding sheet 22 is wound around the reel 21, and the entrance of the housing 11 is opened.

また、検査装置２は、鉛カーテン１３に代えて、筐体１１内の下流側上縁部に配置された左右方向に延伸するリール２６と、リール２６に巻き取られる検査線を遮蔽する可撓性のシートである検査線遮蔽シート２７と、検査線遮蔽シート２７のリール２６に巻き取られる側とは反対側（下側）の縁辺に取り付けられた棒状体であるエンドバー２８と、エンドバー２８の右側端部の移動をガイドするレール２９Ｒと、エンドバー２８の左側端部の移動をガイドするレール２９Ｌと、一方の端部がエンドバー２８の右側端部付近に連結され、他方の端部が昇降台１６１の下流右側隅部に連結された弾性の索体である索体２０Ｒと、一方の端部がエンドバー２８の左側端部付近に連結され、他方の端部が昇降台１６１の下流左側隅部に連結された弾性の索体である索体２０Ｌを備える。 In addition, instead of the lead curtain 13, the inspection apparatus 2 includes a reel 26 extending in the left-right direction arranged at the upper edge of the downstream side in the housing 11 and a flexible reel 26 for shielding the inspection line wound around the reel 26. an inspection line shielding sheet 27 which is an elastic sheet; an end bar 28 which is a rod-shaped body attached to the edge of the inspection line shielding sheet 27 on the opposite side (lower side) of the side wound on the reel 26; A rail 29R that guides the movement of the right end, a rail 29L that guides the movement of the left end of the end bar 28, one end of which is connected to the vicinity of the right end of the end bar 28, and the other end of which is a lifting platform. A cord body 20R, which is an elastic cord body connected to the downstream right corner of the platform 161, one end of which is connected near the left end of the end bar 28, and the other end of which is the downstream left corner of the platform 161. It has a cord body 20L which is an elastic cord body connected to.

リール２６には検査線遮蔽シート２７を巻き取る方向の付勢がなされており、昇降台１６１の下降に伴い、その付勢に逆う力が強まり、索体２０Ｒ及び索体２０Ｌがエンドバー２８に加える下方向の力によって検査線遮蔽シート２７がリール２６から巻き出され、筐体１１の出口を塞ぐ壁となる。また、昇降台１６１の上昇に伴い、リール２６の付勢に逆らう力が弱まり、検査線遮蔽シート２７がリール２６に巻き取られ、筐体１１の出口が開かれる。 The reel 26 is urged in the direction of winding the inspection line shielding sheet 27, and as the platform 161 descends, the force against the urge is increased, and the ropes 20R and 20L are attached to the end bar 28. The inspection line shielding sheet 27 is unwound from the reel 26 by the applied downward force and becomes a wall blocking the exit of the housing 11 . Further, as the lift table 161 rises, the force against the biasing force of the reel 26 weakens, the inspection line shielding sheet 27 is wound around the reel 26, and the exit of the housing 11 is opened.

なお、この変形例に係る検査装置２において、下流側については実施形態に検査装置１と同様に、鉛カーテン１３が採用されてもよい。その場合、検査装置２は、リール２６、検査線遮蔽シート２７、エンドバー２８、レール２９Ｒ及びレール２９Ｌ、索体２０Ｒ及び索体２０Ｌを備えない。 In addition, in the inspection apparatus 2 according to this modified example, the lead curtain 13 may be employed on the downstream side in the same manner as the inspection apparatus 1 in the embodiment. In that case, the inspection device 2 does not include the reel 26, the inspection line shielding sheet 27, the end bars 28, the rails 29R and 29L, the cords 20R and 20L.

この変形例に係る検査装置２によっても、例えば従来技術に係る検査装置９と比較し、検査対象物Ｐの搬送方向における筐体の長さ及びコンベアの長さを短くできる。 According to the inspection device 2 according to this modified example, the length of the housing and the length of the conveyor in the conveying direction of the inspection object P can be shortened, for example, compared with the inspection device 9 according to the prior art.

（２）上述した実施形態に係る遮蔽部材（鉛カーテン１２により例示）に代えて、昇降台１６１の下降に伴い下降する水平方向に拡がる板体が、開口Ｏを塞ぐ遮蔽部材として採用されてもよい。 (2) Instead of the shielding member according to the above-described embodiment (exemplified by the lead curtain 12), a horizontally expanding plate that descends as the platform 161 descends may be adopted as the shielding member for closing the opening O. good.

図６及び図７は、そのような変形例の一具体例に係る検査装置３の構成を模式的に示した図である。ただし、図７は、後述する鍔３１、蓋板３２、脚３３のみを取り出して示している。なお、図７において、筐体１１の入口と昇降台１６１が破線で示されている。以下、検査装置３が上述した実施形態に係る検査装置１と異なる点を説明し、検査装置３が検査装置１と共通する点については、その説明は省略する。 6 and 7 are diagrams schematically showing the configuration of an inspection device 3 according to one specific example of such a modification. However, FIG. 7 shows only a flange 31, a cover plate 32, and a leg 33, which will be described later. In addition, in FIG. 7, the entrance of the housing 11 and the platform 161 are indicated by broken lines. Hereinafter, points of difference between the inspection apparatus 3 and the inspection apparatus 1 according to the above-described embodiment will be described, and descriptions of points common to the inspection apparatus 3 and the inspection apparatus 1 will be omitted.

検査装置３の筐体１１の内側面の、搬送面Ｒよりやや低い高さには、水平方向内側に所定長さで延伸するロの字形状の板体である鍔３１が設けられている。 On the inner surface of the housing 11 of the inspection device 3, at a height slightly lower than the transport surface R, a square-shaped plate member 31 extending horizontally inward for a predetermined length is provided.

また、検査装置３は、鉛カーテン１２及び鉛カーテン１３に代えて、昇降台１６１の昇降に伴い昇降し昇降台１６１が検査領域Ｑに至るまで下降したときに開口Ｏを塞ぐ、検査線を遮蔽する水平方向に拡がる矩形の板体である蓋板３２と、蓋板３２の四隅の各々から下方に延伸し、開口Ｏを通って昇降台１６１の上面に向かう、所定長さの４本の脚３３を備える。 In place of the lead curtain 12 and the lead curtain 13, the inspection apparatus 3 moves up and down as the platform 161 moves up and down, and closes the opening O when the platform 161 descends to the inspection area Q, thereby shielding the inspection line. and four legs of a predetermined length that extend downward from each of the four corners of the cover plate 32 and extend toward the upper surface of the lift table 161 through the opening O. 33.

昇降台１６１の上昇に伴い、昇降台１６１の上面が脚３３の下端を上方向に押し、その力によって蓋板３２が持ち上げられる。また、昇降台１６１の下降に伴い蓋板３２も下降し、蓋板３２の縁部が鍔３１の上に乗ると、蓋板３２により開口Ｏが塞がれた状態となる。 As the platform 161 rises, the upper surface of the platform 161 pushes the lower ends of the legs 33 upward, and the force lifts the cover plate 32 . In addition, the lid plate 32 also descends as the lift table 161 descends, and when the edge of the lid plate 32 rides on the flange 31, the lid plate 32 closes the opening O. As shown in FIG.

検査装置３においては、筐体１１の搬送面Ｒの高さよりも上側の部分には、検査線を遮蔽する機能は不要である。従って、筐体１１の搬送面Ｒの高さよりも上側の部分の内側面が、例えば鉛で覆われている必要はない。 In the inspection apparatus 3, the portion above the height of the transport surface R of the housing 11 does not need a function of shielding the inspection line. Therefore, the inner surface of the portion of the housing 11 above the height of the transport surface R need not be covered with lead, for example.

この変形例に係る検査装置３によっても、例えば従来技術に係る検査装置９と比較し、検査対象物Ｐの搬送方向における筐体の長さ及びコンベアの長さを短くできる。 With the inspection device 3 according to this modified example, the length of the housing and the length of the conveyor in the conveying direction of the inspection object P can also be shortened compared to, for example, the inspection device 9 according to the prior art.

（３）上述した実施形態に係る検査装置１において、開口Ｏを覆う遮蔽部材である鉛カーテン１２が筐体１１の入口を塞ぐ位置にあるか否かを検知する開閉センサ（物体センサ等）と、開口Ｏを覆う遮蔽部材である鉛カーテン１３が筐体１１の出口を塞ぐ位置にあるか否かを検知する開閉センサ（物体センサ等）を備え、それらの開閉センサによって、鉛カーテン１２が筐体１１の入口を塞ぐ位置であり、かつ、鉛カーテン１２が筐体１１の出口を塞ぐ位置であると検知された場合に限り、Ｘ線照射部１４が検査線の照射を行ってもよい。 (3) In the inspection apparatus 1 according to the above-described embodiment, an open/close sensor (such as an object sensor) that detects whether or not the lead curtain 12, which is a shielding member covering the opening O, is positioned to block the entrance of the housing 11; An open/close sensor (such as an object sensor) is provided to detect whether or not the lead curtain 13, which is a shielding member covering the opening O, is positioned to block the exit of the housing 11. These open/close sensors detect whether the lead curtain 12 is in the housing. Only when it is detected that the entrance of the body 11 is blocked and that the lead curtain 12 blocks the exit of the housing 11, the X-ray irradiation unit 14 may irradiate the inspection rays.

また、上述した変形例（１）に係る検査装置２において、開口Ｏを覆う遮蔽部材である検査線遮蔽シート２２が筐体１１の入口を塞ぐ位置にあるか否かを検知する開閉センサ（物体センサ等）と、開口Ｏを覆う遮蔽部材である検査線遮蔽シート２７が筐体１１の出口を塞ぐ位置にあるか否かを検知する開閉センサ（物体センサ等）を備え、それらの開閉センサによって、検査線遮蔽シート２２が筐体１１の入口を塞ぐ位置であり、かつ、検査線遮蔽シート２７が筐体１１の出口を塞ぐ位置であると検知された場合に限り、Ｘ線照射部１４が検査線の照射を行ってもよい。 Further, in the inspection apparatus 2 according to the modified example (1) described above, an open/close sensor (object sensor, etc.), and an open/close sensor (object sensor, etc.) for detecting whether or not the inspection line shielding sheet 27, which is a shielding member covering the opening O, is positioned to block the exit of the housing 11. These open/close sensors Only when it is detected that the inspection line shielding sheet 22 is at a position blocking the entrance of the housing 11 and the inspection line shielding sheet 27 is at a position blocking the exit of the housing 11, the X-ray irradiation unit 14 is turned on. Inspection rays may be irradiated.

また、上述した変形例（２）に係る検査装置３において、開口Ｏを塞ぐ遮蔽部材である蓋板３２が開口Ｏを塞ぐ位置にあるか否かを検知する開閉センサ（物体センサ等）を備え、その開閉センサによって、蓋板３２が開口Ｏを塞ぐ位置であると検知された場合に限り、Ｘ線照射部１４が検査線の照射を行ってもよい。 Further, the inspection apparatus 3 according to the modified example (2) described above is provided with an open/close sensor (such as an object sensor) that detects whether or not the cover plate 32, which is a shielding member that closes the opening O, is in a position that closes the opening O. , the X-ray irradiation unit 14 may irradiate the inspection rays only when the open/close sensor detects that the cover plate 32 is in a position to close the opening O. FIG.

この変形例によれば、何らかの理由で開口Ｏが十分に覆われていない、もしくは塞がれていない状態においては検査線の照射は行われないため、何らかの理由でＸ線照射部１４から照射された検査線の一部が開口Ｏを通って筐体１１の入口又は出口に向かい、入口又は出口から筐体１１外へ漏れ出てしまう、という不都合が回避される。 According to this modification, if the opening O is not sufficiently covered or blocked for some reason, the irradiation of the inspection line is not performed. This avoids the problem that part of the inspection line passes through the opening O toward the entrance or exit of the housing 11 and leaks out of the housing 11 from the entrance or exit.

（４）上述した実施形態に係る検査装置１、変形例（１）に係る検査装置２、又は、変形例（２）に係る検査装置３において、パネルセンサ１５に代えて、ライン型のセンサ（ラインセンサ）が採用されてもよい。この変形例による場合、検査対象物Ｐが昇降台１６１の下降に伴い下降している間、又は、検査対象物Ｐが昇降台１６１の上昇に伴い上昇している間に、Ｘ線照射部１４から継続的に照射され検査対象物Ｐを透過した検査線を、ラインセンサが順次感知することで、二次元のＸ線透過画像が生成される。 (4) In the inspection device 1 according to the embodiment described above, the inspection device 2 according to the modification (1), or the inspection device 3 according to the modification (2), instead of the panel sensor 15, a line sensor ( line sensor) may be employed. According to this modification, while the inspection object P is descending as the elevator table 161 descends, or while the inspection object P is ascending as the elevator table 161 rises, the X-ray irradiation unit 14 A two-dimensional X-ray transmission image is generated by the line sensor sequentially sensing the inspection rays that are continuously emitted from and transmitted through the inspection object P.

（５）上述した実施形態に係る検査装置１、変形例（１）に係る検査装置２、又は、変形例（２）に係る検査装置３が、検査対象物Ｐを鉛直軸周りの異なる複数の方向から撮影したＸ線透過画像を生成し、それら複数のＸ線透過画像に基づき、検査対象物Ｐの三次元形状を表すコンピュータ断層画像を生成する構成が採用されてもよい。 (5) The inspection device 1 according to the above-described embodiment, the inspection device 2 according to the modified example (1), or the inspection device 3 according to the modified example (2) moves the inspection target P to a plurality of different positions around the vertical axis. A configuration may be adopted in which X-ray transmission images taken from different directions are generated, and a computer tomographic image representing the three-dimensional shape of the inspection object P is generated based on the plurality of X-ray transmission images.

この変形例においては、例えば、昇降装置１６が、昇降台１６１を昇降する昇降機構１６３に加えて、昇降台１６１を鉛直軸周りに回転させる回転機構を備える。そして、回転機構によって、昇降台１６１が鉛直軸周りに所定角度だけ回転される毎に、Ｘ線照射部１４とパネルセンサ１５により検査対象物ＰのＸ線透過画像の撮影が行われる。そのように撮影された複数のＸ線透過画像に基づき、コントローラ１９又は端末装置１０は検査対象物Ｐのコンピュータ断層画像を生成する。端末装置１０はそのように生成されたコンピュータ断層画像を表示する。 In this modification, for example, the lifting device 16 includes a rotating mechanism for rotating the lifting table 161 around the vertical axis in addition to the lifting mechanism 163 for lifting the lifting table 161 . An X-ray transmission image of the inspection object P is captured by the X-ray irradiation unit 14 and the panel sensor 15 each time the lifting table 161 is rotated by a predetermined angle around the vertical axis by the rotation mechanism. The controller 19 or the terminal device 10 generates a computed tomographic image of the inspection object P based on the plurality of radiographic images thus captured. The terminal device 10 displays the computed tomographic image thus generated.

なお、昇降台１６１が鉛直軸周りに回転する代わりに、Ｘ線照射部１４及びパネルセンサ１５が検査領域Ｑにある検査対象物Ｐの周りを鉛直軸周りに回転してもよい。 Note that the X-ray irradiator 14 and the panel sensor 15 may rotate around the inspection object P in the inspection region Q around the vertical axis instead of the elevator table 161 rotating around the vertical axis.

この変形例によれば、検査員は、様々な方向から見た場合の検査対象物Ｐの内容物の形状を確認することができる。 According to this modification, the inspector can confirm the shape of the contents of the inspection object P when viewed from various directions.

（６）上述した実施形態に係る検査装置１、変形例（１）に係る検査装置２、又は、変形例（２）に係る検査装置３においては、コンベア１７から昇降台１６１への検査対象物Ｐの移動と、昇降台１６１からコンベア１８への検査対象物Ｐの移動は、昇降台１６１に設けられたコンベア１６２により検査対象物Ｐを搬送する方法によるものとした。検査対象物Ｐをコンベア１７から昇降台１６１へ、また、昇降台１６１からコンベア１８へと移動させる方法はこれに限られない。 (6) In the inspection device 1 according to the above-described embodiment, the inspection device 2 according to the modification (1), or the inspection device 3 according to the modification (2), the object to be inspected from the conveyor 17 to the lifting table 161 The movement of P and the movement of the inspection object P from the elevator table 161 to the conveyor 18 are based on the method of transporting the inspection object P by the conveyor 162 provided on the elevator table 161 . The method of moving the inspection object P from the conveyor 17 to the elevator 161 and from the elevator 161 to the conveyor 18 is not limited to this.

例えば、昇降装置１６が、昇降台１６１を水平軸周りに回転させて、昇降台１６１を上流側から下流側に向かい下がる方向に傾ける回転機構を備え、傾いた状態の昇降台１６１の上流側端部の高さが搬送面Ｒより低くなる位置まで昇降台１６１を下降させることで、コンベア１７の下流側端部に達した検査対象物Ｐが重力に従い昇降台１６１の上に移動するようにしてもよい。また、上記のように傾いた状態の昇降台１６１の下流側端部の高さが搬送面Ｒより高くなる位置まで昇降台１６１を上昇させることで、昇降台１６１上の検査対象物Ｐが重力に従いコンベア１８上に移動するようにしてもよい。 For example, the lifting device 16 has a rotation mechanism that rotates the lifting table 161 around a horizontal axis and tilts the lifting table 161 in a downward direction from the upstream side toward the downstream side. By lowering the lift table 161 to a position where the height of the part is lower than the conveying surface R, the inspection object P that has reached the downstream end of the conveyor 17 moves onto the lift table 161 according to gravity. good too. In addition, by raising the lifting table 161 to a position where the height of the downstream end of the lifting table 161 in the tilted state as described above is higher than the conveying surface R, the inspection object P on the lifting table 161 is moved by gravity. may be moved onto the conveyor 18 according to .

また、筐体１１の入口付近に手荷物をコンベア１７から筐体１１内へとアーム等により押し入れる機構を設けたり、筐体１１の出口付近に手荷物を筐体１１内からコンベア１８へとアーム等により押し出す機構を設けたりしてもよい。 Further, a mechanism for pushing baggage from the conveyor 17 into the housing 11 by an arm or the like is provided near the entrance of the housing 11, or an arm or the like is provided near the exit of the housing 11 to push the baggage from the housing 11 to the conveyor 18. You may provide the mechanism which pushes out by.

（７）上述した実施形態に係る検査装置１、変形例（１）に係る検査装置２、又は、変形例（２）に係る検査装置３においては、検査線としてＸ線が用いられるものとしたが、その他の種類の電磁波が検査線として用いられてもよい。 (7) X-rays are used as inspection lines in the inspection apparatus 1 according to the above-described embodiment, the inspection apparatus 2 according to the modification (1), or the inspection apparatus 3 according to the modification (2). However, other types of electromagnetic waves may be used as inspection lines.

１…検査装置、２…検査装置、３…検査装置、９…検査装置、１０…端末装置、１１…筐体、１２…鉛カーテン、１３…鉛カーテン、１４…Ｘ線照射部、１５…パネルセンサ、１６…昇降装置、１７…コンベア、１８…コンベア、１９…コントローラ、２０…索体、２１…リール、２２…検査線遮蔽シート、２３…エンドバー、２４…レール、２５…索体、２６…リール、２７…検査線遮蔽シート、２８…エンドバー、２９…レール、３１…鍔、３２…蓋板、３３…脚、９１…コンベア、９２…筐体、９３…検査線照射部、９４…検査線センサ、９５…鉛カーテン、９６…鉛カーテン、１６１…昇降台、１６２…コンベア、１６３…昇降機構。 DESCRIPTION OF SYMBOLS 1... Inspection apparatus, 2... Inspection apparatus, 3... Inspection apparatus, 9... Inspection apparatus, 10... Terminal device, 11... Housing, 12... Lead curtain, 13... Lead curtain, 14... X-ray irradiation part, 15... Panel Sensor 16 Lifting device 17 Conveyor 18 Conveyor 19 Controller 20 Rope 21 Reel 22 Inspection line shielding sheet 23 End bar 24 Rail 25 Rope 26 Reel 27 Inspection line shielding sheet 28 End bar 29 Rail 31 Collar 32 Lid plate 33 Leg 91 Conveyor 92 Housing 93 Inspection line irradiation unit 94 Inspection line Sensor, 95... Lead curtain, 96... Lead curtain, 161... Elevating table, 162... Conveyor, 163... Elevating mechanism.

Claims (5)

搬送面上を水平方向に搬送される検査対象物を昇降台により前記搬送面の下方に位置する検査領域と前記搬送面との間で移動させ、前記昇降台の下降に伴い前記搬送面に生じる開口を覆う又は塞ぐように検査線を遮蔽する遮蔽部材を移動させる検査装置。 An object to be inspected that is horizontally conveyed on the conveying surface is moved by an elevator between an inspection area positioned below the conveying surface and the conveying surface, and an object to be inspected is moved on the conveying surface as the elevator descends. An inspection device that moves a shielding member that shields an inspection line so as to cover or block an opening. 前記遮蔽部材は検査対象物の搬送方向における前記開口の上流側縁部において吊られ、検査対象物の搬送に伴い当該検査対象物により押し上げられ、当該検査対象物の下降に伴い垂れ下がる幕体である
請求項１に記載の検査装置。 The shielding member is a screen that is suspended at the upstream edge of the opening in the conveying direction of the inspection object, is pushed up by the inspection object as the inspection object is transported, and hangs down as the inspection object descends. The inspection device according to claim 1. 前記昇降台の下降に伴い検査対象物の搬送方向における前記開口の上流側縁部において壁を成すように前記遮蔽部材を下降させ、前記昇降台の上昇に伴い前記遮蔽部材を上昇させる
請求項１に記載の検査装置。 2. The shielding member is lowered so as to form a wall at an upstream side edge of the opening in the conveying direction of the inspection object as the platform descends, and the shielding member is raised as the platform ascends. The inspection device described in . 前記昇降台の下降に伴い水平方向に拡がる板体の前記遮蔽部材を下降させて前記開口を塞ぎ、前記昇降台の上昇に伴い前記遮蔽部材を上昇させる
請求項１に記載の検査装置。 2. The inspection apparatus according to claim 1, wherein the plate-shaped shielding member extending in the horizontal direction is lowered to close the opening as the platform descends, and the shielding member is raised as the platform ascends. 前記遮蔽部材が前記開口を覆う又は塞ぐ位置にあるか否かを検知し、前記遮蔽部材が当該位置にある場合に限り検査線を照射する
請求項１乃至４のいずれか１項に記載の検査装置。 5. The inspection according to any one of claims 1 to 4, wherein it is detected whether or not the shielding member is in a position that covers or closes the opening, and the inspection line is emitted only when the shielding member is in that position. Device.
JP2021168359A 2021-10-13 2021-10-13 Inspection device Pending JP2023058366A (en)

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