Containers/vehicle inspection system with adjustable radiation x-ray angle

• US 7,386,092 B2
• Filed: 09/22/2004
• Issued: 06/10/2008
• Est. Priority Date: 10/16/2003
• Status: Active Grant

• Current Assignee: Nuctech Company Limited (Tsinghua Tongfang Co., Ltd.), Tsinghua University
• Original Assignee: Nuctech Company Limited (Tsinghua Tongfang Co., Ltd.), Tsinghua University
• Inventors: Wang, Jianxin, Li, Jianmin, Sun, Shangmin, Chen, Zhiqiang, Kang, Kejun, Wu, Yucheng, Yang, Hongliang, Shen, Wanquan
• Primary Examiner(s): SONG, HOON K
• Application Number:
  US10/575,667
• Publication Number:
  US 20070133740A1
• Time in Patent Office: 1,357 Days
• Field of Search: 378/57, 378/196, 378/197, 378/198, 378/203
• US Class Current: 378/57
• CPC Class Codes: G01V 5/20 Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects

Abstract

A containers/vehicles inspection system with adjustable radiation X-ray angle relates to the technical field of radiation inspection. The present invention comprises a detector arm rack equipped with detectors, a second collimator, a pulling device, and an accelerator rack with the accelerator. X-ray produced by the accelerator is right opposite to the calibrator, the first collimator and the second collimator all of which are arranged in order, wherein, said accelerator rack is further composed of a horizontal regulation mechanism for moving the base forward and afterward horizontally, a vertical regulation mechanism for moving the bending framework up and down vertically, a rotary regulation mechanism for rotating the cantilever, a pitching regulation mechanism for driving the accelerator to make pinching movement, as well as a framework formed by a base, a vertical arm, a bending framework and a cantilever. Compared with the prior arts, the present invention is advantageous in reasonable structural design, convenient use and high imaging quality, especially satisfactory effect of focused inspection to some suspicious areas. So it is the necessary equipment for inspecting the Customs goods.

Claims

1. A containers/vehicles inspection system with adjustable radiation X-ray angle, comprising:

an inspection passage;

a pulling vehicle for carrying the containers/vehicles to be inspected to pass through said inspection passage;

an accelerator for emitting X-ray; and

an accelerator rack for bearing said accelerator;

wherein said accelerator rack is composed of a rack including

a base;

a vertical arm vertically connected to the base;

a bending framework vertically connected to said vertical arm; and

a cantilever connected under said bending framework;

a rotary adjustment mechanism arranged between the horizontal end of said bending framework and said cantilever so as to make said cantilever rotate horizontally; and

a pitching adjustment mechanism provided at the bottom end of said cantilever;

said accelerator is hinged with the pitching adjustment mechanism at the coaxial intersection of the cantilever and the pitching adjustment mechanism through a hinging shaft and provided over the base so as to make vertical pitching movements.

2. The containers/vehicles inspection system with adjustable radiation X-ray angle according to claim 1, wherein, said accelerator rack further comprises the horizontal regulation mechanism, which is connected to said base, for moving the base forward and afterward horizontally.

3. The containers/vehicles inspection system with adjustable radiation X-ray angle according to claim 2, wherein, said horizontal regulation mechanism is composed of:

a horizontal guide rail;

a fifth driving device mounted at the bottom end of said base;

a fifth screw mounted in said base and connected to a rotary shaft of the fifth driving device; and

a fifth nut base (54), which is installed in said horizontal guide rail and threadedly connected with said fifth screw so as to through the thread set, make said base move forward and afterward along said horizontal guide rail.

4. The containers/vehicles inspection system with adjustable radiation X-ray angle according to any one of claim 1, wherein, said accelerator rack further comprises a vertical regulation mechanism, which is provided in the vertical arm, for moving the bending framework up and down vertically.

5. The containers/vehicles inspection system with adjustable radiation X-ray angle according to claim 4, wherein, said vertical regulation mechanism is composed of:

a vertical guide rail;

a fourth driving device connected to a pinion;

a gearwheel for engaging with the pinion so as to form a reducer, both of which are installed on the upper top surface of said vertical arm;

a fourth screw provided in said vertical arm and connected to a driving shaft of the gearwheel; and

a fourth nut base, which is provided in the side arm of said bending framework and threadedly connected with the fourth screw so as to through the thread set, make said bending framework move up and down along said vertical guide rail.

6. The containers/vehicles inspection system with adjustable radiation X-ray angle according to claim 1, wherein, said rotary regulation mechanism is composed of:

a third driving device provided on a horizontal end of said bending framework;

a gear provided on the driving shaft of said third driving device; and

a rotary support, of which an inner tooth ring engages with said gear and is connected to said cantilever, and a outer ring of which is connected to the lower end surface of said bending framework;

thus said cantilever can be rotated through the inner tooth ring of said rotary support engaging with the gear.

7. The containers/vehicles inspection system with adjustable radiation X-ray angle according to claim 1, wherein, said pitching regulation mechanism is composed of:

a second driving device;

a worm connected to said second driving device;

a worm wheel engaged with said worm; and

an accelerator support rack connected with a rotary shaft of said worm wheel, on which the second driving device is provided, for supporting the second handwheel and realizing the change in sector elevation angle of main X-ray beam produced by said accelerator through the worm and worm wheel set.

8. The containers/vehicles inspection system with adjustable radiation X-ray angle according to any one of claim 1, wherein, a detector arm rack equipped with detectors and the second collimator is provided in said inspection passage;

the X-ray produced by the accelerator is right opposite to the calibrator and the first collimator both which are arranged in order, and said first collimator is right opposite to said second collimator, so that the conical X-ray produced by said accelerator, after regulated into a sector shape, passes through the articles to be inspected and then is received by the detectors in the detector arm rack.

9. The containers/vehicles inspection system with adjustable radiation X-ray angle according claim 8, wherein, said detector arm rack is in the mode of a bending beam or a combination mode of horizontal beam with vertical beam.

10. The containers/vehicles inspection system with adjustable radiation X-ray angle according claim 8, wherein, a detector arm rack equipped with the detectors and the second collimator is provided in said inspection passage;

the X-ray produced by the accelerator is right opposite to the calibrator and the first collimator both which are arranged in order, and said first collimator is right opposite to said second collimator, so that the conical X-ray produced by said accelerator, after regulated into a sector shape, passes through the articles to be inspected and then is received by the detectors in the detector arm rack.