JPH11160253A - X-ray freight inspection apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an X-ray freight inspection apparatus by which freight to be inspected can be inspected by X-rays even when the shape of the freight to be inspected is a three-dimensional object, a flat object or a bag. SOLUTION: In an X-ray freight inspection apparatus, freight 1 to be inspected is brought into an X-ray inspection room 2 so as to be inspected by X-rays. In the X-ray freight inspection apparatus, when the freight 1 to be inspected is a three-dimensional object, the three-dimensional object is conveyed so as to be inspected by X-rays in a state that a gravity roller conveyor 15 is closed, i.e., in a state that it is vertical. When the freight 1 to be inspected is a flat object, the flat object is stood on the gravity roller conveyor 15 in a state that the gravity roller conveyor 15 is expanded, i.e., in a state that is tilted. Thereby, even when the freight 1 to be inspected is heavy, it is conveyed smoothly so as to be inspected by X-rays. In addition, when the freight 1 to be inspected is a bag-shaped object, it is made to lean in a state that the gravity roll conveyor 15 is tilted in the same manner as in the case of the flat object, and the bag-shaped object can be inspected by X-rays in a state that the bag-shaped object is raised.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X-ray cargo inspection apparatus for carrying an inspected cargo into an X-ray inspection room and performing an X-ray inspection.

[0002]

2. Description of the Related Art X-ray cargo inspection devices are installed at airports, ports, and the like, and are used for inspecting whether or not embargoed items such as guns and guns are concealed in cargo. This X-ray cargo inspection device transports the cargo to be inspected into an X-ray inspection room by a conveyor, and
A signal from a sensor that irradiates a line and receives the transmitted X-ray is displayed on a monitor as image information.

[0003] Such X-ray cargo inspection devices include the following devices.

[0004] (1) A X is applied to the inspected cargo from the lateral direction to the traveling direction.
(2) A device that irradiates the inspected cargo with X-rays from above or below the traveling direction. (3) A side wall where the inspected cargo is transported along the X-ray inspection room. Equipment provided

[0005]

However, since the cargo to be inspected has various forms such as cubic, flat, bag-like, etc., the X-ray cargo inspection apparatus is not suitable for the shape and size of the cargo to be inspected. The output of X-rays can be changed in accordance with the conditions. The above-described conventional apparatus for transporting such inspected cargo
When the X-ray inspection is performed in (1), since the irradiation direction of the X-ray is horizontal, for example, the X-ray inspection of a three-dimensional object and the X-ray inspection of a flat object are performed.
When the X-ray inspection is performed, the X-ray irradiation thickness of the flat object is larger than the X-ray transmission thickness of the three-dimensional object. For this reason, if the output of the X-ray is adjusted to the three-dimensional object, the X-ray inspection of the flat object becomes insufficient.

On the other hand, when the same X-ray inspection is performed by the apparatus (2), the opposite situation occurs in which the X-ray irradiation thickness of the flat object is smaller than the X-ray transmission thickness of the three-dimensional object. Therefore, if the output of the X-ray is adjusted to the flat object, the X-ray inspection of the three-dimensional object becomes insufficient.

When an X-ray inspection is performed by the apparatus (3), a light flat object can be conveyed even when leaning against a wall, but if the flat object is heavy, the flat object follows the traveling conveyor due to the frictional resistance of the wall. The X-ray inspection may be difficult to be carried, and may be hindered on the way to hinder the X-ray inspection.

Further, when the inspected cargo is in the form of a bag, the cargo is laid on the conveyor, and the same result as in the case where the X-ray inspection is performed by the apparatus (1) is obtained.

In any of the devices (1) to (3), the form of the inspected cargo cannot be applied to all three-dimensional objects, flat objects, and bags.

Therefore, an object of the present invention is to solve the above-mentioned problems and provide an X-ray cargo inspection apparatus capable of performing an X-ray inspection regardless of the type of cargo to be inspected, which is a three-dimensional object, a flat object, or a bag. To provide.

[0011]

According to the present invention, there is provided an X-ray cargo inspection apparatus for carrying a cargo to be inspected into an X-ray inspection room and performing an X-ray inspection. A free roller conveyor for guiding the inspected cargo in a raised state is provided on the side wall in the X-ray inspection room so as to be tiltable.

In addition to the above configuration, the X-ray cargo inspection apparatus of the present invention is configured such that one bearing side of the free roller conveyor is rotatably provided near the ceiling in the X-ray inspection room and the other bearing side is provided near the floor. X-ray cargo inspection device that may be freely opened and closed by a link mechanism.

[0013] In addition to the above configuration, the X-ray cargo inspection apparatus of the present invention may be provided with a free roller conveyor inside a shielding door provided at the entrance of the inspected cargo in the X-ray inspection room.

According to the present invention, when the inspected cargo is a three-dimensional object, X-ray inspection can be performed by transporting the free roller conveyor in a closed state, that is, in a vertical state. Also, when the cargo to be inspected is a flat object, the free roller conveyor is expanded, that is, inclined, and the flat object is leaned on the free roller conveyor, so that the cargo to be inspected can be smoothly transported even if it is heavy. Then, an X-ray inspection can be performed. Further, when the inspected cargo is a bag-like object, the free-roller conveyor is inclined and leaned, as in the case of a flat object, to perform an X-ray inspection with the bag-like object raised. be able to.

A free roller conveyor is provided inside the shielding door at the entrance and exit of the cargo to be inspected in the X-ray inspection room. Before the X-ray inspection, the free door conveyor on the entrance side is widened and the free roller conveyor is moved to the free roller conveyor in the X-ray inspection room. In this case, the step is eliminated, so that the flat object or the bag-like object can be easily carried in. After the X-ray inspection is completed, the shielding door on the exit side of the inspected cargo in the X-ray inspection room is widened, and the free roller conveyor is aligned with the free roller conveyor in the X-ray inspection room, so that the inspection cargo can be easily carried out.

Since the free roller conveyor is provided with a link mechanism, it can be opened and closed according to the form of the inspected cargo. That is, when the inspected cargo is a three-dimensional object, the free roller conveyor may be closed, and when the inspected cargo is a flat object or a bag-like object, the free roller conveyor may be opened.

[0017]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a sectional view showing an embodiment of the X-ray cargo inspection apparatus of the present invention, and FIG. 2 is a perspective view of the X-ray cargo inspection apparatus of the present invention. FIG. 1 shows a state in which a flat roller is conveyed to spread a flat object.

The X-ray cargo inspection apparatus shown in FIG. 2 includes an X-ray inspection room 2 for performing an X-ray inspection of the inspected cargo 1 and an X-ray inspection room 2 before carrying the inspected cargo 1 into the X-ray inspection room 2 in the direction of arrow A. Conveyor 3
A rear conveyor 4 for unloading the inspected cargo 1 after the X-ray inspection from the X-ray inspection room 2 in the direction of arrow B; and a device operation unit 5 for operating the X-ray inspection device and displaying a fluoroscopic image on a monitor It is composed of

The X-ray examination room 2 uses a lead plate.
At the doorway of the cargo 1 to be inspected, a double door-type shield door 6a,
6b, 7a, 7b and curtains 8, 9 in the form of a noren are provided to prevent leakage of X-rays to the outside. On the floor of the X-ray inspection room 2, a traveling conveyor 10 for transporting the inspected cargo 1 in the longitudinal direction from the entrance to the exit.
Is provided.

An X-ray generation unit 11 for generating X-rays is disposed outside a side wall 2a on one side (the right side in the figure) of the X-ray examination room 2, and a slit formed in the center of the side wall 2a in a vertical direction. The inspection cargo 1 is irradiated with X-rays through the reference numeral 12. The X-ray generator 11 is covered with an X-ray shielding cover 13 for preventing X-rays from leaking outside.

The other (left side in the figure) side wall 2b and ceiling 2c in the X-ray examination room 2 have an X-ray sensor 1 having a substantially inverted L-shape.
4 for receiving X-rays transmitted through the inspected cargo 1.

Inside the other side wall 2b of the X-ray inspection room 2, a free roller conveyor 15 for guiding the inspected cargo (flat article or bag-like article) 1 in a raised state is provided to be tiltable.

The free roller conveyor 15 includes a number of rollers 16, a frame 17 that accommodates the rollers 16 in a vertical direction and in parallel, and one bearing side 17 a of the frame 17.
Is located near the ceiling 2c of the side wall 2b in the X-ray examination room 2.
And the other side 17b of the frame 17 on the other bearing side is openably and closably connected by a link mechanism 19 provided near the floor.

Here, in order to incline the free roller conveyor 15, the upper fulcrum and the lower fulcrum of the free roller conveyor 15 are formed into a pin structure, and the arm connected to the pin of the lower fulcrum is fixed on the side wall, and the free roller conveyor 15 is tilted. Just open it.

That is, the link mechanism 19 includes a fixed portion 20 provided near the floor of the side wall 2 b, an arm 22 having one end rotatably connected to the fixed portion 20 by the pin 21, and the other end of the arm 22. An arm 24 rotatably connected by a pin 23 and a fixing portion 26 rotatably connected to the other end of the arm 24 by a pin 25 and fixed to the other side 17 b of the frame 17. Is realized by:

FIG. 3 is an external perspective view of a shielding door provided at the entrance of the X-ray examination room, and FIG. 4 is a side view showing a state where the free roller conveyor is expanded.

A free roller conveyor 27 is provided inside the shielding door 6a. Free roller conveyor 27
As in the case of the free roller conveyor 15 described above, a frame 29 for accommodating a large number (not limited to six in the figure) of rollers 28 in a vertical and parallel manner,
The side 29a on one bearing side of the frame 29 is rotatably provided above the shielding door 6a by a hinge 30, and the other side 29b of the frame 29 on the bearing side is provided by a link mechanism 31 provided below the shielding door 6a. It is connected to open and close freely.

The link mechanism 31 includes a fixed portion 32 provided below the shielding door 6a, an arm 34 having one end rotatably connected to the fixed portion 32 by a pin 33, and a pin connected to the other end of the arm 34. Arm 36 rotatably connected by 35
And a fixing portion 38 rotatably connected to the other end of the arm 36 by a pin 37 and rotatably fixed to the other side 29 b of the frame 29 by the pin 37.

The free roller conveyor 27 is also provided on the other doors 6b other than the double doors 6a and the double doors 7a and 7b on the exit side.

Since the X-ray cargo inspection apparatus has such a structure, when the inspected cargo 1 is a three-dimensional object, the X-ray inspection room is in a state where the free roller conveyors 15 and 27 are closed, that is, in a vertical state. The X-ray inspection can be performed by transporting the wafer into the inside of the apparatus.

When the inspected cargo 1 is flat and heavy, the free roller conveyors 15 and 27 are spread, that is, inclined, and the flat objects are leaned on the free roller conveyors 15 and 27. Thus, even if the flat object is heavy, it can be smoothly transported and X-ray inspection can be performed. However, when the flat object is light, the free roller conveyors 15 and 27 are closed and the free roller conveyor 1 is closed.
The X-ray inspection may be performed in a state where a flat object is leaned on 5, 27.

Further, when the inspected cargo 1 is a bag-like material, the free roller conveyor 15,
The X-ray inspection can be performed in a state in which the bag-like material is raised by leaning the 27 in an inclined state.

On the other hand, before the X-ray inspection is performed, the flat doors or the bag-like objects are removed by opening the shielding doors 6a and 6b on the entrance side and aligning the free roller conveyor 27 with the free roller conveyor 15 in the X-ray inspection room 2. After the X-ray inspection is completed, the exit doors 7a and 7b are widened, and the free roller conveyor 27 is aligned with the free roller conveyor 15 in the X-ray inspection room. It is easy to carry it out.

In the above, according to the present invention, the free roller conveyor for guiding the inspected cargo in a raised state is X
By providing the X-ray inspection chamber inclinably on the side wall, the X-ray generation unit is not provided with one X-ray generation unit in each of the horizontal and vertical directions. However, the X-ray inspection can be performed, and the space can be omitted correspondingly.

[0036]

In summary, according to the present invention, the following excellent effects are exhibited.

Since the free roller conveyor for guiding the inspected cargo in a raised state is provided on the side wall in the X-ray inspection room so as to be freely tilted, the inspected cargo may be any of a three-dimensional object, a flat object, and a bag. The provision of an X-ray cargo inspection device capable of performing an X-ray inspection can be realized.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of an X-ray cargo inspection apparatus according to the present invention.

FIG. 2 is a perspective view of the X-ray cargo inspection device of the present invention.

FIG. 3 is an external perspective view of a shielding door provided at a doorway of an X-ray examination room.

FIG. 4 is a side view showing a state where a free roller conveyor is expanded.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inspection cargo 2 X-ray inspection room 10 Traveling conveyor 11 X-ray generation part 14 X-ray sensor 15 Free roller conveyor

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Osamu Higashi Osamu 3-1-1-15 Toyosu, Koto-ku, Tokyo Inside Ishikawajima-Harima Heavy Industries Co., Ltd. (72) Inventor Shichio Kaneko Toyosu, Koto-ku, Tokyo No. 1-115, Ishikawajima-Harima Heavy Industries Co., Ltd. (72) Inventor Toshiro Nakazushi Tomisu 3-1-1, Toyosu, Koto-ku, Tokyo, Japan Inventor Toshiaki Suzuki 1720 Kamai, Higashi-cho, Inashiki-gun, Ibaraki Pref.

Claims (3)

[Claims] In an X-ray inspection apparatus for carrying an inspected cargo into an X-ray inspection room and performing an X-ray inspection, a free roller conveyor for guiding the inspected cargo in a raised state is provided on a side wall in the X-ray inspection room. An X-ray cargo inspection device characterized by being provided at an angle. 2. The free roller conveyor according to claim 1, wherein one of the bearing sides is rotatably provided near a ceiling in the X-ray examination room, and the other bearing side is openably and closably connected by a link mechanism provided near the floor. Item 2. The X-ray cargo inspection device according to Item 1. 3. The X-ray cargo inspection apparatus according to claim 1, wherein the free roller conveyor is provided inside a shielding door provided at a doorway of the inspected cargo in the X-ray inspection room.