CN204855417U - Miniaturized flying -spot scanning mechanism - Google Patents
Miniaturized flying -spot scanning mechanism Download PDFInfo
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- CN204855417U CN204855417U CN201520594029.7U CN201520594029U CN204855417U CN 204855417 U CN204855417 U CN 204855417U CN 201520594029 U CN201520594029 U CN 201520594029U CN 204855417 U CN204855417 U CN 204855417U
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Abstract
The utility model discloses a miniaturized flying -spot scanning mechanism, it includes: X -ray tube and flying spot generation mechanism, X -ray tube form illumination sector area, and flying spot generation mechanism is located the X -ray tube and is looked into between the object, make the illumination sector area within range of X -ray tube form the flying spot through the rotation. Sweep the mechanism based on this miniaturization flying spot and can make backscattering imaging device miniaturized, effectively break the limitation that current security installations used.
Description
Technical field
The utility model relates to x-ray imaging technology, is specifically related to the rays safety detection apparatus based on x-ray imaging.
Background technology
Ray back scattering imaging technology is often applied to the fields such as the dangerous goods of detecting hidden after body of wall or in container, it is different from actinoscopy X detection and must be placed between radiographic source and detector by tested object, only need to be placed on one side, have important using value in a lot of occasion.But such rays safety detection apparatus of onsite application is usually restricted because volume is large, such as checks car inner part or truck tire, need Large-scale Mobile equipment, such as vehicular backward scattering sniffer etc.Consider the convenience of use, it is necessary that miniaturization even makes portable equipment.Then, the miniaturization aspect of this technology lags behind perspective always, and very important restriction factor is exactly its comparatively complicated and huge scanning mechanism.
Backward scattering scanning mechanism common are following several:
1. form of a stroke or a combination of strokes beam scanister, itself be exactly a some light beam source, rotary scanning device can produce a beam flying;
2. chopper wheel flying spot scanning device, is one and produces spot beam by the chopper wheel slit of preposition collimating slit and rotation;
3. rotating cylinder flying spot scanning device, is one and radiographic source is placed in swing roller central authorities, and cylinder is provided with the aperture producing some light beam, swing roller just can produce spot scan effect.
Wherein, form of a stroke or a combination of strokes ray beam light source also needs external pointolite cooling system, structurally cannot accomplish miniaturization.And other two kinds of modes, need to consider that radiographic source exports angle and corresponding radiation shield factor, although structure is simple, low cost of manufacture, then needs to set up bulky scanister, be also difficult to the backward scattering safety check imaging device accomplishing hand-held specification.
Utility model content
Cannot realize miniaturization for existing backward scattering scanning mechanism, cause backward scattering safety check imaging device volume large, awkward problem, the purpose of this utility model is to provide a kind of miniaturization flying-spot scanner mechanism, to realize the miniaturization of back scattering imaging equipment.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of miniaturization flying-spot scanner mechanism, described scanning mechanism comprises:
X-ray tube, described X-ray tube forms illumination sector region;
Flying spot produces mechanism, and described flying spot generation mechanism is at X-ray tube and looked between object, makes to form flying spot within the scope of the illumination sector region of X-ray tube by rotating.
Preferably, described X-ray tube is provided with collimating apparatus, described collimating apparatus collimates the fan-shaped slit beam of rear formation to the ray that X-ray tube sends.
Preferably, described flying spot produces mechanism and mainly comprises flying-spot scanner dish group and motor, and described driven by motor flying-spot scanner dish group is rotated cutting fan beam and formed flying spot light beam.
Preferably, described flying-spot scanner dish group comprises dish seat and flying spot dish, and described flying spot dish is provided with flying spot recess region, and is fixed on dish seat, and described dish seat connects with machine shaft.
Preferably, also comprise mechanism's seat group in described scanning mechanism, described mechanism seat group comprises mechanism's seat and cover plate for settling flying-spot scanner dish group, motor, and described panel rest on mechanism's seat, and covers the arrangement parts in it.
The miniaturization flying-spot scanner mechanism that the utility model provides, relative to prior art, has the following advantages:
1. the volume of this flying-spot scanner structure is much smaller than chopper wheel and cylinder type flying-spot scanner structure;
2. the size of turning axle (i.e. the diameter of flying spot dish) can change the magnitude range of sector region β flexibly;
3., because turning axle is much smaller relative to the size of chopper wheel and cylinder, be more conducive to miniaturization and the lightweight of scanning mechanism;
4. the miniaturization of flying-spot scanner mechanism, provides space to the layout of backscatter detector, is conducive to backward scattering detection imaging and radiogenic combined integratedization.
Accompanying drawing explanation
The utility model is further illustrated below in conjunction with the drawings and specific embodiments.
The schematic diagram of the miniaturization flying-spot scanner mechanism that Fig. 1 provides for the utility model;
Fig. 2 sweeps the one-piece construction schematic diagram of mechanism for miniaturization flying spot that the utility model provides;
Fig. 3 sweeps the side view of mechanism for the flying spot of miniaturization shown in Fig. 2;
Fig. 4 is the structural representation of flying-spot scanner dish group in the utility model;
Fig. 5 is the side view of the dish of flying-spot scanner shown in Fig. 4 group;
Fig. 6 is the structural representation of mechanism's seat group in the utility model.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
The flying-spot scanner structure of X ray, its principle is the some light beam approximate circle cone beam sent by X-ray tube being become ray shape.Based on this principle, chopper wheel flying-spot scanner structure is assumed diamond in shape by flying spot shape during slit at light beam; Rotary drum type flying-spot scanner structure is in the shape of light beam by during aperture being aperture.
According to the forming process of flying spot, the some beam energy of chopper wheel structure changes to some extent with the chopper wheel anglec of rotation, and the some beam energy of rotary drum type structure is then relatively stable.As long as but structure allows, and does not affect two kinds of Scan Architecture application in back scattering imaging equipment.
Accordingly, the miniaturization flying-spot scanner mechanism that the utility model provides, as shown in Figure 1, it, by the turning axle 1 producing flying spot is arranged on x-ray source 2 (i.e. X-ray tube) and is looked between object 3, makes by the rotation of turning axle to form flying spot within the scope of the illumination sector region β of X-ray tube.
Concrete, the turning axle 1 producing flying spot is formed by driven by motor flying spot disc spins, and its size is the diameter of flying spot dish.The turning axle 1 formed thus, only could form flying spot in range beta, and other angle can not form flying-spot scanner due to the stop of flying spot dish.
The miniaturization flying-spot scanner mechanism formed thus, its luminous point passes through the shape of crack between above-mentioned chopper wheel flying-spot scanner structure and the beam shape of rotary drum type flying-spot scanner structure formation, can not affect the application of flying-spot scanner structure in back scattering imaging.
Participate in Fig. 2, the miniaturization flying spot that it is depicted as utility model provides sweeps the one-piece construction figure of mechanism.As seen from the figure, this miniaturization flying spot is swept mechanism 100 entirety and is comprised these five parts of X-ray tube 101, collimating apparatus 102, mechanism's seat group 103, flying-spot scanner dish group 104 and motor 105.
Wherein, X-ray tube 101 is x-ray source, for the formation of the X ray detecting scanning.
Collimating apparatus 102 is arranged on X-ray tube 101, collimates the rear fan-shaped slit beam forming β scope to the X ray that X-ray tube 101 sends.
Flying-spot scanner dish group 104, is placed in the fan beam region beta of X-ray tube 101 formation, forms flying spot light beam (as Fig. 3) by circumgyration incision fan beam.
See Fig. 4 and Fig. 5, this flying-spot scanner dish group 104 mainly comprises dish seat 104a and flying spot dish 104b, and flying spot dish 104b is processed with flying spot recess region 104c, and this flying spot dish 104b is fixed on dish seat 104a and forms flying-spot scanner dish group 104.The dish seat 104a and the flying spot dish 104b that form flying-spot scanner dish group 104 specifically adopt tungsten-copper alloy or analog material to make.
Whole group of this dish group is mounted in the rotating shaft of motor 105 by key, motor 105 rotarily drives flying spot dish group and rotates in fan beam region beta, form flying spot light beam by the flying spot recess region 104c circumgyration incision fan beam on flying spot dish 104b, form flying-spot scanner.And the size changing flying spot dish diameter can regulate the size of flying spot angulation β.
Moreover the miniaturization flying spot formed thus sweeps mechanism when setting scanning sample, when diagram flying spot forming region ogival is above flying spot dish, setting scanning sample is effective, otherwise invalid.
Motor 105, sweeps the power source in mechanism for whole miniaturization flying spot, it drives and connects flying-spot scanner dish group 104, rotarily drives flying-spot scanner dish group 104 and rotates cutting fan beam formation flying spot light beam.
Mechanism's seat group 103, miniaturization flying spot, for connecting X-ray tube 101 and settling collimating apparatus 102, flying-spot scanner dish group 104 and motor 105, is swept mechanism 100 and is formed an one-piece construction by thus.
As shown in Figure 6, this mechanism's seat group 103 comprises mechanism seat 103a and cover plate 103b.The resettlement groove for settling flying-spot scanner dish group 104 is offered in mechanism seat 103a; Be processed with light output groove, this light output groove is corresponding with resettlement groove; Relative to resettlement groove mechanism seat 103a offering the mounting hole connecting motor; In mechanism's seat group 103, be provided with the installation screw 103c (illustrating 2 mounting holes) for fixing collimating apparatus 102 simultaneously.
Cover plate 103b coordinates with mechanism seat 103a, is fixed on mechanism seat 103a by attachment screw, is formed cover the inside of mechanism seat 103a.
Thus, in the rotating resettlement groove be placed on mechanism seat 103a of flying-spot scanner dish group 104, and interior light slot fit; Motor 105 is placed in the mounting hole on mechanism seat 103a, and it rotates to stretch in resettlement groove to drive and connects flying-spot scanner dish group 104; Collimating apparatus 102 is provided with corresponding installation screw, and it is placed on mechanism seat 103a relative to mechanism seat 103a glazing groove, coordinates the screw on the screw on it and mechanism seat 103a to be fixed by mounting screw; Finally cover plate 103b is fixed on mechanism seat 103a, flying-spot scanner dish group 104 and the structure that is mated is covered mechanism seat 103a inner.
The miniaturization flying spot formed thus is swept in mechanism, because flying-spot scanner dish group 104 entirety realizing flying spot surface sweeping is positioned at mechanism's seat group 103, corresponding ray source is all inner in mechanism's seat group 103 from producing, propagating, formed flying spot, certain shielding action can be produced to ray like this, to reduce the harm to operating personnel by mechanism's seat group 103.
The miniaturization flying spot formed based on such scheme is swept mechanism 100 and is conducive to backscatter detector and arranges, be conducive to the setting of structure-integrated, the gear train that is conducive to scanning mechanism of backscatter detector, be conducive to simplifying structure and reducing manufacturing cost; Effectively avoid that existing backward scattering flying-spot scanner structural volume is large, Heavy Weight simultaneously, and the shortcoming of very flexible.
Thus, sweep mechanism 100 based on this miniaturization flying spot and can make back scattering imaging device miniaturization, effectively break the limitation that existing rays safety detection apparatus uses.
More than show and describe ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. a miniaturization flying-spot scanner mechanism, is characterized in that, described scanning mechanism comprises:
X-ray tube, described X-ray tube forms illumination sector region;
Flying spot produces mechanism, and described flying spot generation mechanism is at X-ray tube and looked between object, makes to form flying spot within the scope of the illumination sector region of X-ray tube by rotating.
2. a kind of miniaturization flying-spot scanner mechanism according to claim 1, it is characterized in that, described X-ray tube is provided with collimating apparatus, described collimating apparatus collimates the fan-shaped slit beam of rear formation to the ray that X-ray tube sends.
3. a kind of miniaturization flying-spot scanner mechanism according to claim 1, is characterized in that, described flying spot produces mechanism and mainly comprises flying-spot scanner dish group and motor, and described driven by motor flying-spot scanner dish group is rotated cutting fan beam and formed flying spot light beam.
4. a kind of miniaturization flying-spot scanner mechanism according to claim 3, is characterized in that, described flying-spot scanner dish group comprises dish seat and flying spot dish, and described flying spot dish is provided with flying spot recess region, and is fixed on dish seat, and described dish seat connects with machine shaft.
5. a kind of miniaturization flying-spot scanner mechanism according to claim 3, it is characterized in that, mechanism's seat group is also comprised in described scanning mechanism, described mechanism seat group comprises mechanism's seat and cover plate for settling flying-spot scanner dish group, motor, described panel rest on mechanism's seat, and covers the arrangement parts in it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520594029.7U CN204855417U (en) | 2015-08-07 | 2015-08-07 | Miniaturized flying -spot scanning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520594029.7U CN204855417U (en) | 2015-08-07 | 2015-08-07 | Miniaturized flying -spot scanning mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN204855417U true CN204855417U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520594029.7U Expired - Fee Related CN204855417U (en) | 2015-08-07 | 2015-08-07 | Miniaturized flying -spot scanning mechanism |
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| CN (1) | CN204855417U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113835129A (en) * | 2020-06-23 | 2021-12-24 | 同方威视技术股份有限公司 | Flying spot scanning device and back scattering safety detection system |
-
2015
- 2015-08-07 CN CN201520594029.7U patent/CN204855417U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113835129A (en) * | 2020-06-23 | 2021-12-24 | 同方威视技术股份有限公司 | Flying spot scanning device and back scattering safety detection system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20170807 |
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| CF01 | Termination of patent right due to non-payment of annual fee |