CN2384216Y

CN2384216Y - Movable container detector

Info

Publication number: CN2384216Y
Application number: CN99215812U
Authority: CN
Inventors: 宋世鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-06-28
Filing date: 1999-06-28
Publication date: 2000-06-21
Anticipated expiration: 2009-06-28

Abstract

The utility model discloses a movable container detecting device which comprises a radiation source, a detecting head, a travelling crane, guide rails and a supporting bracket. The guide rails are installed on the supporting bracket. The travelling crane can move on the guide rails to drive the radiation source and the detecting head to synchronously and horizontally move. A collimator is arranged at the point of an outlet of the radiation source. One supporting flat plate is arranged at the bottom part of the whole movable container detecting device. The supporting bracket is installed on the supporting flat plate. Wheels and a jack is arranged below the supporting flat plate. The utility model has the advantages of miniaturization, movability and high detection speed.

Description

The mobile container sniffer

The utility model relates to a kind of large-sized object radiation detector assembly, the particularly sniffer of acquisition means case.

Along with popularizing of encased conveying, the Detection Techniques of container also more and more are subjected to people's attention.Particularly in occasions such as customs, need be under the situation of not unpacking the quick detection container, to check goods wherein.Existing mobile container sniffer is generally stationary installation, this type of container sniffer have the construction period long, cost is high, move the shortcoming of inconvenience.At present Shenzhen Wen Jin sails across a sea and closes and the container sniffer of emperor hilllock customs installation, be in a building can shield the sense channel of ray, fixed radiographic source and detector are housed, the vehicle that special-purpose dragging system will be equipped with container dragged sense channel, when container passes through in beam, the transmitted intensity that reaches detector through container changes, the Density Distribution that reflects the thing of freighting in the container, transmitted intensity is transformed into ganmma controller, can obtains the fluoroscopy image of the thing of freighting in the case.Van container reaches 20 meters, and is wide 2.5 meters up to 4 meters (connect its transport vehicle), heavyly reaches 50 tons.If adopt above-mentioned container sniffer, then its floor area is very big, and cost is also very high, as is loaded on the sniffer of the English mouth aerospace company at Huang Gang port, Shenzhen, takes up an area of to reach 7000M ²More than, 5,000,000 dollars of device prices, construction cost is more than 1,500,000 dollars.

Tsing-Hua University is 95103044.2 in its patent No., patent name is in the patent of " self-scan type radiation detection system for large body ", and the container sniffer of proposition comprises radiation source, collimating tower, detection tower, track and scanning gantry; Its radiation source places on the track reciprocating, and collimating tower and detection tower place on another group track, and with radiation source, is synchronized with the movement by the servomotor drive.Tested large-sized object (container) places the collimating tower track and surveys between the tower track, ray from radiation source passes through collimating tower, enter the detector array of surveying tower behind the transmission container, detector absorbs ray and output charge, is transferred to visual workstation after being transformed into number.Owing to adopted self-scan type, container is motionless during detection, but radiographic source and detector are moving, so this system's floor area and cost all reduce to some extent, but owing to radiation source, collimating tower, detection tower three require synchronous operation, system complex (utilizing laser mask image technique of counterpoint and servo-drive system to realize in this patent) is difficult for realizing; Because the radiation source range finder is far away, radiation source intensity is required high again; And its collimation mode is slit collimation, and ray is subjected to diffuse transmission influence big; Article three, the span of track is big, needs to build the protective construction of large span.More than these reasons cause systems bulky, the scanning required time is long, and its floor area still needs 600M ²More than, therefore, it is very difficult wanting to allow detecting devices move.Though this patent has also proposed a kind of compacter sniffer that utilizes the diagonal line transmission mode in its final stage, but because its ray is the large angle scattering, the gained image is fan-shaped projection, and the size with image in kind is different because of the distance of distance, and in fact this system is difficult to realize.

The purpose of this utility model is exactly in order to overcome the above problems, and a kind of novel mobile container sniffer is provided, and its floor area is further reduced, and can move, and price is lower, and performance is better.

The utility model realizes that the scheme of above-mentioned purpose is: a kind of mobile container sniffer, comprise radiographic source, detecting head, it is characterized in that: also comprise driving, guide rail, bracing frame, guide rail is installed on the bracing frame, driving can be moved on guide rail, and drives radiographic source and the detecting head level of synchronization moves; There is collimating apparatus in radiogenic exit; The bottom of whole device also has a support plate, and support frame as described above just is installed on the support plate, and there are wheel and lifting jack in the support plate below.

Owing to adopted above scheme, replaced scanning gantry with driving, track has also become two by three, thereby the span of whole device is reduced greatly, the weight of motive position alleviates greatly also that (when motion driving has only driving itself and radiographic source, detecting head moving during work, and the bracing frame itself of driving and motionless, scanning gantry then is to connect its bracing frame one starting).Radiographic source shortens to the distance of detecting head, makes radiogenic requirement of strength is reduced, thereby sweep velocity is accelerated.Obviously, because more compact structure, floor area reduces greatly.Under this prerequisite, whole device just can be placed onboard, can move, and in fact support plate, wheel are exactly an automobile planker in the such scheme.When whole device moves to suitable position, utilize the lifting jack below it to support, just can begin container is surveyed.

Fig. 1 is the utility model embodiment one synoptic diagram.

Fig. 2 a is the utility model embodiment one schematic top view.

Fig. 2 b is the utility model embodiment one schematic side view.

Fig. 3 is the utility model embodiment two synoptic diagram.

Fig. 4 is the utility model embodiment two schematic top view.

Fig. 5 is the utility model embodiment two afterbody synoptic diagram.

Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.

Embodiment one: see Fig. 1, Fig. 2 a, Fig. 2 b, shown in the mobile container sniffer comprise radiographic source 1, detecting head 2, also comprise driving 3, guide rail 4, bracing frame 5, guide rail 4 is installed on the bracing frame 5, driving 3 can be moved on guide rail 4, and drive radiographic source 1 and detecting head 2 level of synchronization move; There is collimating apparatus 6 in the exit of radiographic source 1; The bottom of whole device also has a support plate 9, and support frame as described above 5 just is installed on the support plate 9, and there are wheel 91 and lifting jack 92 in the support plate below.Its propulsion system that move are headstocks 10, and it links to each other with support plate 9, can drag whole device by wheel 91 and move.

When radiographic source 1 is radioactive isotope, also be provided with the switchgear and the collimating aperture that aim at its design, so that in time close (screen is worn-out) radiographic source when needing.In fact, because the mobile container sniffer is subjected to the restriction of support plate 9 sizes, the worn-out wall of too thick screen can not be set, when not using, it is very necessary that radiographic source 1 is closed.Also any shield assembly can be set in the whole detection system, when needs are surveyed container, above-mentioned mobile container detection system can have been moved to and shield in worn-out and the passage, can reach safety requirements equally.

In order further to reduce the floor area of whole device, the protective door 8 that its two ends vehicle is imported and exported adopts revolving door rather than horizontal sliding door, as shown in Figure 2, opens Shi Buhui at door like this and increases its size at Width, thereby reduced occupation of land.On door automatic monitoring, automaton can be set, when the container vehicle arrived, protective door was opened automatically.

In a side of radiographic source 1, straight line laser head and TV pickup head can also be set, they and the same moved further of radiographic source are with accurate observation, determine reference position and survey the thing situation.

Embodiment two: see Fig. 3, Fig. 4, Fig. 5, this programme can further alleviate the volume of whole device, can be referred to as " one-sided suspension type " design.It is characterized in that: described radiographic source 1 and detecting head 2 are positioned at the same side of guide rail 4; In the driving 3 rotating shaft 11 is arranged, driving 11 11 rotations around the shaft make driving 3, radioactive source 1, detector 2 folding guide rail 4 one sides that fit in.Owing to maybe need radiographic source 1 and detector 2 to be folded up when mobile installing not the time spent, reduced its volume (mainly be width reduces many) greatly.Situation after dotted line is just represented to fold among Fig. 4.State when Fig. 3 then is its expansion.

Claims

1. mobile container sniffer, comprise radiographic source (1), detecting head (2), it is characterized in that: also comprise driving (3), guide rail (4), bracing frame (5), guide rail (4) is installed on the bracing frame (5), driving (3) can go up be moved at guide rail (4), and drives radiographic source (1) and detecting head (2) level of synchronization moves; There is collimating apparatus (6) in the exit of radiographic source (1); The bottom of whole device also has a support plate (9), and support frame as described above (5) just is installed on the support plate (9), and there are wheel (91) and lifting jack (92) in the support plate below.

2. mobile container sniffer as claimed in claim 1 is characterized in that: also have headstock (10), it links to each other with support plate (9), can drag whole device by wheel (91) and move.

3. mobile container sniffer as claimed in claim 1 or 2 is characterized in that: described radiographic source (1) and detecting head (2) are positioned at the same side of bracing frame (5); In the driving (3) rotating shaft (11) is arranged, driving (11) is (11) rotation around the shaft, makes driving (3), radioactive source (1), folding bracing frame (5) one sides that fit in of detector (2).