Article inspection device

Abstract

To provide an article inspection device in which a support portion for an inspection unit is simple and lightweight.SOLUTION: An X-ray inspection device 1a has a structure in which an inspection unit 2 is connected to a support portion 20a via a connecting portion 40a. The support portion is a truss structure composed of an upper first girder member 21, a lower second girder member 22, and a joint member 23 that pin-connects both girder members in a triangular arrangement pattern. The connecting portion 40a is attached to the bottom surface of the inspection unit and supports the inspection unit by gripping and fixing at any position in the axial direction of the first girder member using gripping portions 42. A truss structure support portion is lightweight, high-strength, and low in manufacturing cost. Placing and fixing the inspection unit with the connecting portion in the upper vicinity of pin nodes of the truss structure provides further stable support for the inspection unit.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an article inspection device having an inspection unit mounted on a support unit installed on a floor surface or the like, and in particular to an article inspection device that uses a truss structure to realize a simple support unit with low manufacturing costs that does not rely on the strength of components, and that can use the support unit as is even if there are changes to the size of the inspection unit or attached equipment, without the need for complex recalculation of the structure. [Background technology]

[0002] Patent Document 1 below discloses an invention of an X-ray foreign object detection device. This X-ray foreign object detection device includes a housing 1 and a belt conveyor unit 3 that is detachably mounted inside the housing 1 and movable on a plurality of casters 2. The housing 1 includes a stand 5 that is installed on a floor 4 via installation legs 5a, and a main body case 6 that stands upright at the rear of the stand 5. A gap is provided between the lower front part of the main body case 6 and the stand 5, and the belt conveyor unit 3 is inserted therein, and the belt conveyor unit 3 is positioned on the stand 5. The housing 1 also includes an X-ray detection means 9 that is located below the belt conveyor unit 3 inside the housing 1 and detects X-rays that have passed through the object to be inspected, allowing the presence or absence of foreign objects in the object to be inspected to be detected.

[0003] Patent Document 2 below discloses an invention of an X-ray inspection apparatus. This X-ray inspection apparatus includes a conveyor 10, an X-ray inspection means 20 provided in a housing 21 having an X-ray shielding function, first and second open-front covers 31 and 32 that cover a conveyance path 10a on the upstream and downstream sides of the X-ray inspection means 20, a sorting and discharge mechanism 40 disposed on the conveyance path 10a inside the second open-close cover 32, and a discharged material storage box 50 disposed on the rear side in the width direction of the conveyance path 10a. Each of these components is mounted or attached to a machine frame 1 whose length corresponds to the length of the X-ray inspection means 20 and the first and second open-close covers 31 and 32 in the conveyance direction of the objects to be inspected. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-46921 [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-33403 Summary of the Invention [Problem to be solved by the invention]

[0005] In an article inspection device that has a structure in which a housing or conveyor is mounted on a support (a stand or machine frame) installed on the floor, such as the X-ray foreign object detection device and X-ray detection device disclosed in Patent Documents 1 and 2, the structure of the housing or conveyor can become more complex as the required functions change or become more sophisticated, resulting in an increase in the length and weight of the device. In such cases, it has traditionally been necessary to review the structure of the support and take necessary measures, such as redesigning or recalculating, to accommodate the changed design conditions each time.

[0006] The present invention has been made in consideration of the problems with the conventional technology described above, and aims to provide an item inspection device with a support part that has a structure in which an inspection part is connected to a support part, has a lightweight, simple structure with low manufacturing costs that does not rely on the strength of components, and is equipped with a support part that does not require complex re-calculation of the structure even if there are changes to the size of the inspection part or conveying part, or to auxiliary equipment, etc. [Means for solving the problem]

[0007] The article inspection device according to claim 1 comprises: an inspection unit that inspects the object to be inspected; a support part having a truss structure provided below the inspection part and supporting the inspection part; a connecting portion that connects the inspection portion and the support portion; It is characterized by having the following.

[0008] The article inspection device according to claim 2 is the article inspection device according to claim 1, the support section is composed of a round-bar-shaped first girder member installed horizontally at an upper position, a second girder member installed parallel to the first girder member at a lower position, and a plurality of connecting members connecting the first girder member and the second girder member in a triangular arrangement pattern; The connecting portion is characterized by having an arm portion having one end attached to the inspection portion, and a circular gripping portion provided at the other end of the arm portion for gripping any position of the first beam member.

[0009] The article inspection device according to claim 3 is the article inspection device according to claim 1, the support section is composed of a plate-shaped first girder member installed horizontally at an upper position, a second girder member installed parallel to the first girder member at a lower position, and a plurality of connecting members connecting the first girder member and the second girder member in a triangular arrangement pattern; The connecting portion is characterized by connecting the inspection portion to an arbitrary position of the first beam member.

[0010] The article inspection device according to claim 4 is the article inspection device according to claim 2 or 3, The support section is characterized by having an integrated configuration of two sets each consisting of the first girder member, the second girder member, and the connecting member, which are arranged side by side in a horizontal direction perpendicular to the longitudinal direction of the first girder member and the second girder member.

[0011] The X-ray inspection apparatus according to claim 5 is the article inspection apparatus according to claim 4, The inspection unit is characterized in that it is an X-ray inspection unit that irradiates an object to be inspected with X-rays and inspects the object to be inspected using an X-ray image obtained from the X-rays that have passed through the object to be inspected. [Effects of the Invention]

[0012] According to the item inspection device described in claim 1, a truss structure is adopted for the support part that supports the inspection unit, which makes it possible to reduce weight and manufacturing costs.In addition, the load applied from above can be supported by axial force alone and evenly distributed in the longitudinal direction.Furthermore, even if there are changes to the size of the inspection unit or conveying unit, or to auxiliary equipment, there is no need to redesign a new support part using complex calculations.A new item inspection device can be constructed using the previous support part by appropriately changing the connection position of the inspection unit relative to the support part.

[0013] According to the article inspection device described in claim 2, by connecting the upper round bar-shaped first girder member and the lower second girder member with multiple joint members arranged in a triangular shape, it is possible to realize a truss structure support unit that is lightweight, simple, and has low manufacturing costs, while also obtaining high strength without relying on the strength of the members. Furthermore, since the gripping part of the arm unit attached to the inspection unit can grip any position of the first girder member at the top of the truss structure, if the gripping part is configured to grip the first girder member at a position near the pin node of the truss structure (the connection part between the first girder member and the joint member), the inspection unit can be stably supported above the support unit.

[0014] According to the article inspection device described in claim 3, by connecting the upper plate-shaped first girder member and the lower second girder member with multiple connecting members arranged in a triangular shape, it is possible to realize a support part for a truss structure that is lightweight, simple, and has low manufacturing costs, while also obtaining high strength without relying on the strength of the members. Furthermore, since the connecting member can connect the inspection part to any position on the first girder member at the top of the truss structure, if the inspection part is connected to the support part at a position directly above the pin node (the connecting part between the first girder member and the connecting member) of the truss structure, the inspection part can be stably supported above the support part.

[0015] According to the item inspection device described in claim 4, there are provided two truss structures each consisting of an upper first girder member, a lower second girder member, and a plurality of connecting members connecting the first and second girder members. These two truss structures are integrated and arranged side by side in a horizontal direction perpendicular to the longitudinal direction of the first and second girder members. Therefore, even if the size of the inspection unit and conveying unit increases and the overall weight and length of the machine increase, such as when auxiliary equipment, etc. are added, these inspection units, etc. can be stably supported.

[0016] According to the X-ray inspection device described in claim 5, a truss structure is used for the support part that supports the X-ray inspection unit, thereby achieving weight reduction and reduced manufacturing costs in the technical field of X-ray inspection devices, which are often heavy devices. Furthermore, since the load applied from above can be supported by axial force alone and evenly distributed in the longitudinal direction, even if there are changes in the size of the X-ray inspection unit or transport unit, or in auxiliary equipment, there is no need to redesign a new support part through complex calculations, and a new X-ray inspection device can be configured using the previous support part by appropriately changing the connection position of the X-ray inspection unit relative to the support part. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a front view of an article inspection device according to a first embodiment. [Figure 2] 1 is a perspective view of an article inspection device according to a first embodiment, viewed from the front right side. [Figure 3] 1 is a perspective view of an article inspection device according to a first embodiment, viewed from the upper right front side. [Figure 4] FIG. 2 is a right side view of the article inspection device according to the first embodiment. [Figure 5] 3 is a partially enlarged front view showing the structure of a pin joint of a support part of the object inspection device of the first embodiment and a connecting part that connects the inspection part and the support part. FIG. [Figure 6] FIG. 10 is a front view of an article inspection device according to a second embodiment. [Figure 7] FIG. 10 is a front view of an article inspection device according to a third embodiment. [Figure 8]FIG. 11 is a perspective view of an article inspection device according to a third embodiment, viewed from the front right side. [Figure 9] FIG. 10 is a perspective view of a support portion of an article inspection device according to a fourth embodiment. [Figure 10] FIG. 11 is a partially enlarged front view showing a pin node of a support portion and a connecting portion connected to a plate-shaped first beam member in an object inspection device according to a fourth embodiment. [Figure 11] FIG. 11 is a perspective view of a support portion in a modified example of the fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0018] An X-ray inspection apparatus 1a, which is an article inspection apparatus according to a first embodiment, will be described with reference to FIGS. The inspection unit 2 of the X-ray inspection apparatus 1a has a housing 3 with an X-ray shielding structure. As shown in FIG. 4 in particular, the housing 3 is composed of a relatively large upper housing 3a, a relatively small lower housing 3b, and an intermediate housing 3c that connects the upper housing 3a and the lower housing 3b at the rear. As shown in FIGS. 3 and 4, the area surrounded by the upper housing 3a, the intermediate housing 3c, and the lower housing 3b is an inspection space S for the object to be inspected. As shown in FIGS. 1 and 2, a front door 4 with a shielding structure that can be opened and closed or removed is provided at the front side of the inspection space S. Note that the front door 4 is not shown in FIGS. 2 and 4. Furthermore, as shown in FIG. 2, an X-ray shielding curtain 5 is provided on the right side of the upper housing 3a, which opens to the inspection space S, and an X-ray shielding curtain is also provided on the opening on the left side of the upper housing 3a (not shown), similar to the opening on the right side.

[0019] 1 to 3, a transport unit 6 for transporting an object to be inspected is provided in the inspection space S of the inspection unit 2 so as to pass through the inspection space S in the horizontal direction. The transport unit 6 in this embodiment is a belt conveyor in which a transport belt 9 wound around a drive roller 7 and a driven roller 8 is driven by a drive unit 10 having a built-in motor. Note that the transport unit 6 is not shown in FIG.

[0020] As shown in FIGS. 1 to 4, a display operation unit 11 is provided on the front surface of the upper housing 3a of the inspection unit 2. An X-ray generator (not shown) that irradiates X-rays downward is provided inside the upper housing 3a of the inspection unit 2, and an X-ray detector (not shown) is provided inside the lower housing 3b. The object to be inspected enters the inspection space S while being transported by the transport unit 6, and in the inspection space S, is irradiated with X-rays emitted by the X-ray generator. The X-rays that have passed through the object to be inspected and the transport belt 9 of the transport unit 6 are detected by the X-ray detector. A control unit (not shown) inspects the object to be inspected based on a signal output by the X-ray detector.

[0021] As shown in FIGS. 1 to 4, the support unit 20a of the X-ray inspection apparatus 1a is a structure that is configured by integrally connecting two adjacent truss structures (or two sets of truss structures) and is provided below the inspection unit 2 to support the inspection unit 2. Since the two truss structures have the same structure, the configuration of one of the truss structures will be described first. The truss structure is configured by a round-rod-shaped first girder member 21 installed horizontally at an upper position, a round-rod-shaped second girder member 22 installed horizontally at a lower position, and a plurality of round-rod-shaped connecting members 23 that connect the first girder member 21 and the second girder member 22 in a triangular arrangement pattern. Note that the triangle in the arrangement pattern is an equilateral triangle in this embodiment, but it may also be an isosceles triangle or a right-angled triangle.

[0022] As shown in Fig. 1, the lower second girder member 22 is longer than the upper first girder member 21 and is arranged longitudinally such that both ends of the lower second girder member 22 protrude longitudinally beyond both ends of the first girder member 21. As shown in Fig. 4, the lower second girder member 22 is arranged on the opposite side of the other truss structure from the position of the first girder member 21 in a direction perpendicular to its longitudinal direction (the left-right direction in Fig. 4). As shown in Figs. 3 and 4, the lower second girder member 22 of the first truss structure and the lower second girder member 22 of the second truss structure are also connected by a plurality of connecting members 23 arranged in a triangular pattern.

[0023] As shown in Figure 5, the joint between the first girder member 21 and the connecting member 23 is configured as a pin node. That is, a roughly semicircular connecting plate 24 is fixed to the first girder member 21, and a notch groove (not shown in Figure 5) perpendicular to the end face is formed at the end of the connecting member 23 so that it passes through the center of the end face. The connecting member 23 is attached to the connecting plate 24 so that the connecting plate 24 is inserted into this notch groove, and a pin 25 penetrates the end of the connecting member 23 and the connecting plate 24, making it possible to form the joint between the connecting member 23 and the connecting plate 24 as a pin node.

[0024] As in the example of a pin node structure shown in Figure 5, two adjacent connecting members 23, 23 connected to a common connecting plate 24 may be connected at different positions on the connecting plate 24 with different pins 25, 25, thereby distributing the load to two nodes. Alternatively, although not shown, the ends of two adjacent connecting members 23, 23 connected to a common connecting plate 24 may be arranged overlapping on the connecting plate 24, and the ends of the two connecting members 23, 23 may be connected to the connecting plate 24 by passing through a common pin 25, thereby concentrating the load at one node.

[0025] The structure of the pin node of the truss structure constituting the support portion 20a described above is similar to that of the joint portion of the lower second girder member 22 and the joint member 23 that connects the second girder member 22. The above-described structure of the pin node where the notched groove of the joint member 23 is inserted into the connecting plate 24 is shown in Fig. 4 as a schematic representation, but is designated by the symbol P.

[0026] As shown in Figure 4, the first girder member 21 on the upper side of the first truss structure and the first girder member 21 on the upper side of the second truss structure are connected by fixing members 26. The arrangement and number of fixing members 26 are arbitrary, but it is preferable that there are two or more fixing members 26. For example, sufficient strength can be obtained by providing fixing members 26 in three locations, between both ends and between the center of the first girder members 21, 21.

[0027] As shown in Figures 3 and 4, the support part 20a consisting of two truss structures configured as described above is arranged so that the longitudinal directions of the two first girder members 21, 21 and the two second girder members 22, 22 are parallel and horizontal to each other, and the distance between one second girder member 22 and the other second girder member 22 is longer than the distance between one first girder member 21 and the other first girder member 21, forming a stable framework that is approximately equilateral triangular or trapezoidal when viewed from the side.

[0028] 1 to 4, a total of four adjustment units 30 are provided at both ends of the two second beam members 22, 22, with a nut and threaded rod structure that allows the threaded rod to move axially. By appropriately operating these four adjustment units 30, the heights of both ends of the two second beam members 22, 22 can be adjusted independently, and therefore the overall height, inclination, and other postures of the article inspection device 1a can be adjusted as desired.

[0029] As shown in FIGS. 1, 2, and 4, the inspection unit 2 and the support unit 20a are connected by a connecting portion 40a. As shown in FIG. 4, the connecting portion 40a is composed of an arm portion 41 and a gripping portion 42. One end of the arm portion 41 is attached to the rear of the underside of the inspection unit 2, and the other end extends to the center of the bottom surface of the inspection unit 2, with a predetermined distance between the arm portion 41 and the bottom surface of the inspection unit 2 required to position the transport unit 6. Two gripping portions 42 are provided at the other end of the arm portion 41. The two gripping portions 42 are located at two positions, one in front of the other, sandwiching the approximate center position in the depth direction (the left-right direction in FIG. 4) of the inspection unit 2. Furthermore, as shown in FIG. 1, the two connecting portions 40a, 40a configured as described above are located at two positions symmetrically on the left and right with respect to a center line (not shown) of the inspection unit 2. The arrangement of the connecting portions 40a, 40a and the four gripping portions 42 relative to the above-mentioned inspection unit 2 has been set taking into consideration the weight and shape balance of the inspection unit 2 so that the inspection unit 2 can be stably supported when attached to the support portion 20a.

[0030] As shown in Figures 4 and 5, the gripping unit 42 is a circumferential or annular fastener as a whole, and is composed of two semicircular small members connected by a hinge so that they can be opened and closed. When attaching the inspection unit 2 to the support unit 20a, the inspection unit 2 is supported by a separate means (for example, a lifting device such as a crane) and brought close to the support unit 20a, and all four gripping units 42 of the two connecting units 40a are opened. The inspection unit 2 is then positioned so that the first girder members 21 are placed on the open gripping units 42. If the small members are closed in this state, the two gripping units 42 of each of the two connecting units 40a can grip and fix the two first girder members 21 at two locations each, allowing the inspection unit 2 to be attached to the support unit 20a reliably and in a balanced manner.

[0031] Since the first girder member 21 is rod-shaped, the gripping portion 42 is annular with circular inner and outer shapes. However, if the first girder member 21 has a shape other than a rod, the gripping portion 42 may have an appropriate shape and structure that matches the outer shape of the first girder member 21 so that the first girder member 21 can be stably gripped and fixed.

[0032] According to the X-ray inspection apparatus 1a of the first embodiment described above, a truss structure is employed for the support part 20a that supports the inspection part 2, thereby realizing a lightweight, simple, and low-cost support part 20a that has high overall strength without relying on the strength of the components. With this support part 20a, the load of the inspection part 2 applied from above can be supported only by the axial force of the components, and can be distributed evenly in the longitudinal direction.

[0033] Furthermore, according to the X-ray inspection apparatus 1a of the first embodiment, the gripping portion 42 of the arm portion 41 attached to the inspection unit 2 can select any position on the first girder member 21 at the top of the truss structure to grip and fix it. Therefore, if the gripping portion 42 grips the first girder member 21 near the pin node of the truss structure (the connection portion between the first girder member 21 and the joint member 23) as shown in Figures 1 and 5, the effect of stably supporting the inspection unit 2 above the support portion 20a is further enhanced.

[0034] An X-ray inspection apparatus 1a according to the second embodiment will be described with reference to FIG. The configuration of the second embodiment is the same as that of the first embodiment except for the relative positional relationship between the inspection unit 2 and the support unit 20a, so the same reference numerals as in FIG. 1 are used in FIG. 6 and the description of the first embodiment will be cited.

[0035] 1, in the X-ray inspection apparatus 1a of the first embodiment described above, the inspection unit 2 is attached to the center of the support unit 20a in the longitudinal direction (left-right direction in FIG. 1), and the four gripping units 42 are arranged near the pin nodes of the truss structure. However, even if the inspection unit 2 is not necessarily attached to the center of the support unit 20a in the longitudinal direction (left-right direction in FIG. 1) and all the gripping units 42 are not necessarily arranged near the pin nodes of the truss structure, the attachment of the inspection unit 2 to the support unit 20a does not become unstable.

[0036] In the second embodiment shown in Fig. 6, the position of the inspection unit 2 is moved further to the right than in the first embodiment shown in Fig. 1, and most of the drive unit 10 is positioned longitudinally outside the first girder member 21. Even with the inspection unit 2 positioned in this way, the load of the inspection unit 2 applied from above to the support member 20a is supported only by the axial force of the truss structure members and is distributed evenly in the longitudinal direction, so the inspection unit 2 can be stably supported.

[0037] As shown in Figure 6, in the second embodiment, the position of the inspection unit 2 has been moved to the right compared to the first embodiment in Figure 1, resulting in extra space on the left side of the inspection unit 2. This empty space can be used to place a conveyor that carries articles from a device upstream of the inspection unit 2, such as an article supply device, with its downstream end facing the upstream end of the conveyor unit 6. A newly provided connector 40a can then connect the downstream end of the conveyor to the support unit 20a, allowing part of the weight of the conveyor to be supported by the support unit 20a. Even in this case, the support unit 20a can be used as is, and there is no need to modify the support unit 20a or redesign a new support unit 20a when rearranging the equipment.

[0038] An X-ray inspection apparatus 1b according to the third embodiment will be described with reference to FIGS. The configuration of the third embodiment is the same as that of the first embodiment except for the relative positional relationship between the inspection unit 2 and the support unit 20a and the configuration of part of the conveying unit 6. Therefore, in Figures 7 and 8, the common parts are given the same symbols as in Figure 1, and the explanation of the first embodiment will be used.

[0039] In the third embodiment shown in Figures 7 and 8, the position of the inspection unit 2 is moved to the left compared to the first embodiment shown in Figure 1, and an extension unit 30b is connected to the right end of the conveying unit 6 to extend the conveying distance of the conveying unit 6. A connecting portion 40a is provided on the underside of the added extension unit 30b, and the first beam member 21 is fixedly gripped by two gripping portions 42 of the connecting portion 40a. With this configuration and arrangement of the inspection unit 2, the load of the inspection unit 2 applied from above to the support portion 20a increases. However, this load is supported only by the axial force of the truss structure members and is evenly distributed in the longitudinal direction, ensuring stable support of the inspection unit 2. As with the second embodiment, the support portion 20a can be used as is, and there is no need to modify or redesign a new support portion 20a when adding or rearranging equipment.

[0040] An X-ray inspection apparatus according to the fourth embodiment will be described with reference to FIGS. Since the configuration of the inspection unit 2 in the fourth embodiment is the same as that in the first embodiment except for the configuration of the support portion 20b and the connecting portion 40b, the description of the first embodiment will be omitted and will be used to refer to the first embodiment. Also, in Fig. 9 (support portion 20b) and Fig. 10 (a view corresponding to Fig. 5 of the first embodiment), parts common to the first embodiment are assigned the same reference numerals as in Fig. 1 and the description of the first embodiment will be used to refer to the first embodiment.

[0041] As shown in FIG. 9 , in the fourth embodiment, the two first girder members 21 in the first embodiment are replaced with a single plate-shaped first girder member 44. As shown in FIG. 10 , the joint between the plate-shaped first girder member 44 and the connecting member 23 is a pin joint. Furthermore, instead of the two gripping members 42 described in the first to third embodiments, the connecting portion 40b on the bottom surface of the inspection unit 2 is provided with a plate-shaped fixing portion 45 having a length equivalent to the span of the two gripping members 42 in a direction perpendicular to the longitudinal direction of the plate-shaped first girder member 44 (the depth direction in FIG. 10 ). By arranging this fixing portion 45 at a desired position on the plate-shaped first girder member 44 and fixing it to the first girder member 44, the inspection unit 2 can be attached to the support portion 20b. The fixing portion 45 and the plate-shaped first girder member 44 are preferably fixed to a position near the pin joint of the truss structure, as shown in FIG. 10 . Any fixing means may be used to fix the fixing portion 45 and the first girder member 44.

[0042] A modification of the fourth embodiment will be described with reference to FIG. In this modification, the single plate-shaped first girder member 44 in the fourth embodiment is replaced with two elongated plate-shaped first girder members 46, 46. In Fig. 11, parts that are common to the support part 20b in the fourth embodiment are given the same reference numerals as in Fig. 9, and the description of the fourth embodiment will be used. This modification also provides the same effects as the fourth embodiment.

[0043] The fifth embodiment will be described using the reference numerals used in the other embodiments. In this embodiment, a fixing plate having a length equivalent to the span of the two gripping parts 42, 42 in a direction perpendicular to the longitudinal direction of the first girder member 21 (the depth direction in FIG. 5 ) is provided at each end of the arm parts 41 of the two connecting parts provided on the bottom surface of the inspection unit 2. The length of the fixing plate is set so that it can be stably placed on the two first girder members 21, 21 when placed in a direction perpendicular to the longitudinal direction of the first girder member 21. The inspection unit 2 can be attached to the support part 20a by placing the two fixing parts of the connecting part attached to the inspection unit 2 on the two first girder members 21, 21 of the support part 20a and fastening the two fixing parts to the two first girder members 21, 21. The fixing parts and the first girder members 21 are preferably fixed to positions near the pin nodes of the truss structure, as shown in FIG. 5 . The fixing parts and the first girder members 21 may be fixed by any means.

[0044] As described above, according to the embodiment of the present invention, a truss structure is employed for the supports 20a, 20b, and 20c that support the inspection unit 2, thereby achieving weight reduction and reduced manufacturing costs. Furthermore, the inspection unit 2 can be attached to any longitudinal position of the first beam members 21, 44, and 46 of the supports 20a, 20b, and 20c. This allows the load applied from above to the supports 20a, 20b, and 20c to be supported by axial force alone and evenly distributed in the longitudinal direction. This provides a high degree of freedom in the placement of the inspection unit 2 relative to the supports 20a, 20b, and 20c. Even if the inspection unit 2 is replaced with a model of a different size or weight, or if accessory equipment is added, changed, or removed, a new support unit does not need to be redesigned through complex calculations. Simply by appropriately changing the connection position of the inspection unit 2 relative to the supports 20a, 20b, and 20c, a new article inspection device can be reconfigured using the original supports 20a, 20b, and 20c.

[0045] In the above-described embodiment of the present invention, the truss structure constituting the support portions 20a, 20b, and 20c has been described as having each member connected at a pin joint. However, if there is some reason or purpose, such as structural or durability considerations, a so-called rigidly connected truss structure may be used in which the members are connected at rigid joints, for example, by high-strength bolts, instead of pin joints. [Explanation of symbols]

[0046] 1a, 1b...X-ray inspection device as an article inspection device 2...Inspection Department 20a, 20b, 20c...Support part 21, 44, 46...First girder member 22...Second girder member 23... Joint material 40a,40b…Connection part 41...Arm section 42...Gripping part 45...Fixed part

Claims

1. an inspection unit that inspects the object to be inspected; a support part having a truss structure provided below the inspection part and supporting the inspection part; a connecting portion that connects the inspection portion and the support portion; An article inspection device comprising:

2. The support portion is composed of a first girder member having a round bar shape and installed horizontally at an upper position, a second girder member installed parallel to the first girder member at a lower position, and a plurality of connecting members that connect the first girder member and the second girder member in a triangular arrangement pattern, The object inspection device described in claim 1, characterized in that the connecting portion has an arm portion having one end attached to the inspection portion and a circular gripping portion provided at the other end of the arm portion for gripping any position of the first beam member.

3. the support portion is composed of a plate-shaped first girder member installed horizontally at an upper position, a second girder member installed parallel to the first girder member at a lower position, and a plurality of connecting members connecting the first girder member and the second girder member in a triangular arrangement pattern; 2. The article inspection device according to claim 1, wherein the connecting portion connects the inspection portion to an arbitrary position of the first beam member.

4. The object inspection device described in claim 2 or 3, characterized in that the support unit is an integrated configuration of two sets consisting of the first girder member, the second girder member, and the connecting member, which are arranged side by side in a horizontal direction perpendicular to the longitudinal direction of the first girder member and the second girder member.

5. 5. An X-ray inspection device as an item inspection device as described in claim 4, wherein the inspection unit is an X-ray inspection unit that irradiates the item to be inspected with X-rays and inspects the item to be inspected using an X-ray image obtained from the X-rays that have passed through the item to be inspected.

Images