CN209878626U - Detector box and security inspection equipment - Google Patents

Abstract

The utility model discloses a detector box and security check equipment, it belongs to the security check technical field, and the detector box includes integrated into one piece's main part, the main part includes base plate, supporter and installation body, and the base plate includes first base plate and the second base plate of interval parallel arrangement, form the accommodation space between first base plate and the second base plate; the support body is connected with the first substrate and the second substrate; the mounting body is arranged in the accommodating space and connected with the substrate, and at least provided with a mounting surface, wherein the mounting surface is a step surface and extends in an arc shape and is used for mounting the collimator and the detector. The security inspection equipment comprises the detector box. The detector and the collimator are both mounted on the main body, all mounting surfaces are machined on the same reference, high machining precision can be guaranteed, accuracy of detection results is guaranteed, and the phenomenon of displacement cannot occur in the rotating process.

Description

Detector box and security inspection equipment

Technical Field

The utility model relates to a safety inspection technical field especially relates to a detector box and safety inspection equipment.

Background

Computed Tomography (CT) imaging devices are widely used in the fields of medical diagnosis, baggage security inspection, and the like. The X-ray detector comprises a detection area for a patient or an object to pass through, wherein an X-ray generating device (a ray source for short) and a plurality of X-ray receiving devices (namely detector modules) are arranged in the detection area.

Referring to fig. 1, according to the CT imaging principle, it is required that the radiation source 101 and all the detector modules 102 maintain a precise positional relationship, and a plurality of the detector modules 102 are distributed on a segment of an arc centered on the radiation source 101. In order to reduce interference of scattered rays to the detector module 102 caused by scattered rays when X-rays penetrate through an object, a collimator 103 is generally disposed above the detector module 102, where the collimator 103 corresponds to the detector module 102 in position, and the collimator 103 is configured to split a ray beam emitted from the radiation source 101 into a plurality of fan-shaped ray beams. The detector box 104 is used to carry the collimator 103 and the detector module 102 and provide them with high precision in mounting positioning.

The existing detector box 104 is mostly of a split structure, and all the components are fastened through bolts. Alternatively, the detector box 104 is fabricated by welding. Since the CT is operated, the radiation source 101 and the detector box 104 need to rotate together at high speed to scan the detection region, and the rotation direction is indicated by the arrow in fig. 1. The detector box 104 with the split structure has poor precision, is not easy to ensure accurate alignment of the radiation source 101 and the detector module 102, and is easy to shift in the rotation process, so that the detection result is inaccurate. The welded detector box 104 is heavy, the weld is prone to cracking during high-speed rotation, stability is poor, installation accuracy is difficult to guarantee, and imaging quality is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a detector case and safety inspection equipment to solve the low technical problem who leads to the image quality poor of the detector case installation accuracy that exists among the prior art.

As the conception, the utility model adopts the technical proposal that:

a sonde box comprising an integrally formed body portion, the body portion comprising:

the substrate comprises a first substrate and a second substrate which are arranged in parallel at intervals, and an accommodating space is formed between the first substrate and the second substrate;

a support connecting the first substrate and the second substrate;

the mounting body is positioned in the accommodating space and connected with the substrate, and at least comprises a mounting surface, wherein the mounting surface is a step surface and extends in an arc shape and is used for mounting the collimator and the detector.

The mounting surfaces comprise a first mounting surface and a second mounting surface which are arranged in parallel at intervals, the collimator is connected with the first mounting surface, and the detector is connected with the second mounting surface.

The mounting body is provided with a plurality of layers of mounting surfaces which are arranged at intervals along the radial direction, and the plurality of layers of mounting surfaces are not shielded in the radial direction.

Wherein, the installation body includes first mounting panel and the second mounting panel that parallel interval set up, first mounting panel with first base connection, the second mounting panel with the second base connection, the lateral surface of first mounting panel with the lateral surface of second mounting panel forms the installation face, the both ends of collimater are connected respectively first mounting panel with the second mounting panel.

And a notch is arranged on the outer side of the first substrate, and an avoiding space is formed between the notch and the second substrate.

Wherein, the breach is the arc breach.

The surface of one side, far away from the first substrate, of the second substrate is a positioning surface, and a plurality of mounting holes are formed in the positioning surface.

The positioning surface is a step surface and comprises at least two planes which are arranged in parallel at intervals, and each plane is provided with the mounting hole.

The support bodies are two and two support bodies are respectively arranged at two ends of the substrate, and the support bodies are of hollow structures.

Wherein a plurality of reinforcing plates are arranged between the first substrate and the second substrate.

A security device comprising a detector box as described above.

The utility model has the advantages that:

the utility model provides a detector box, first base plate and second base plate interval parallel arrangement for form the accommodation space between first base plate and the second base plate, the supporter plays the effect of supporting and gaining in strength, the installation body has one deck installation face at least, is used for installing collimater and detector, and the installation face is the step face and all just is convex extension, and the convex centre of a circle is the position of installation ray source; all the detectors and the collimators corresponding to the ray sources are installed on the main body part through integrally molding the main body part, and all the installation surfaces are processed on the same reference, so that higher processing precision can be ensured, and the accuracy of a detection result is further ensured; and because main part integrated into one piece, stability is high, can not take place the aversion phenomenon at rotatory in-process, further guarantees the accuracy of testing result.

Drawings

FIG. 1 is a schematic diagram of CT imaging;

fig. 2 is a schematic structural diagram of a detector box provided by an embodiment of the present invention;

fig. 3 is a front view of a detector box provided by an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a main body part of a detector box provided by the embodiment of the invention;

FIG. 5 is a side view of a main body portion of a sonde box according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of one direction of a detector box according to an embodiment of the present invention;

fig. 7 is an enlarged view at a in fig. 6;

fig. 8 is a schematic structural diagram of another orientation of the detector box according to the embodiment of the present invention;

fig. 9 is a schematic structural diagram of another orientation of the detector box according to the embodiment of the present invention;

fig. 10 is a schematic structural diagram of another detector box according to an embodiment of the present invention.

In fig. 1:

101. a radiation source; 102. a detector module; 103. a collimator; 104. a detector box;

in fig. 2-10:

10. a collimator; 20. a detector;

1. a main body portion; 2. a reinforcing plate;

11. a first substrate; 111. a notch;

12. a second substrate; 121. a boss; 122. a positioning pin hole; 123. a main body mounting hole;

13. a support body; 131. a hollow interior cavity;

141. a first mounting surface; 142. a second mounting surface; 143. a first mounting plate; 144. a second mounting plate.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

Referring to fig. 2 to 9, an embodiment of the present invention provides a detector box for being installed on a device having a CT imaging system, such as a medical device and a security inspection device, and capable of carrying a detector 20 and a collimator 10 disposed corresponding to the detector 20.

The detector box comprises an integrally formed main body part 1, the main body part 1 comprises a substrate, a support body 13 and an installation body, the substrate comprises a first substrate 11 and a second substrate 12 which are arranged in parallel at intervals, an accommodating space is formed between the first substrate 11 and the second substrate 12, the support body 13 is connected with the first substrate 11 and the second substrate 12, the effects of supporting and increasing strength are achieved, the installation body is arranged in the accommodating space and connected with the substrates, the installation body at least comprises one layer of installation surface, the installation surface is a step surface and extends in a circular arc shape and is used for installing the collimator 10 and the detector 20 respectively, and the circle center of the circular arc shape is the position for installing the ray source. By integrally forming the main body part 1, all the detectors 20 and the collimators 10 corresponding to the ray sources are installed on the main body part 1, and all the installation surfaces are processed by the same reference, so that higher processing precision can be ensured, and the accuracy of a detection result is further ensured; and because main part 1 integrated into one piece, stability is high, can not take place the aversion phenomenon in rotatory process, further guarantees the accuracy of testing result.

In this embodiment, there are two supporting bodies 13, and the two supporting bodies 13 are respectively disposed at two ends of the first substrate 11. One end of the support 13 is connected to the first substrate 11, and the other end is connected to the second substrate 12. In the use process, the main body part 1 rotates at a high speed and can be subjected to a large centrifugal force, and the two supporting bodies 13 are arranged to ensure the stress balance.

The support body 13 is of a hollow structure, so that the weight is reduced, meanwhile, the sufficient bending-resistant section coefficient can be ensured, the structural rigidity is ensured, the mass is reduced, the centrifugal force is reduced, the deformation is reduced, the detection precision is ensured, and the service life is prolonged.

In the present embodiment, the cross-sectional shape of the hollow cavity 131 of the support body 13 is a polygon. Of course, the cross-sectional shape of the hollow cavity 131 of the support body 13 can be set to be circular, elliptical, triangular or irregular combined by straight lines and curved lines according to practical situations, and is not limited herein. To facilitate the casting process, the two ends of the hollow cavity 131 of the supporting body 13 respectively penetrate through the first substrate 11 and the second substrate 12.

Because the mounting surface is a step surface, the mounting surface comprises a first mounting surface 141 and a second mounting surface 142 which are arranged in parallel at intervals, the collimator 10 is connected with the first mounting surface 141, and the detector 20 is connected with the second mounting surface 142. The detector 20 is located at the side of the collimator 10 remote from the source of radiation. The first mounting surface 141 and the second mounting surface 142 are machined on the same reference, so that high machining precision can be ensured, and the accuracy of a detection result can be further ensured.

The mounting body comprises a first mounting plate 143 and a second mounting plate 144 which are arranged in parallel at intervals, the first mounting plate 143 is connected with the first substrate 11, the second mounting plate 144 is connected with the second substrate 12, and the outer side surface of the first mounting plate 143 and the outer side surface of the second mounting plate 144 form mounting surfaces. The collimator 10 is just opposite to the space between the first mounting plate 143 and the second mounting plate 144, so that the collimator is aligned to the ray source, and two ends of the collimator 10 are respectively connected with the first mounting plate 143 and the second mounting plate 144, so that the mounting stability is ensured, and looseness during high-speed rotation is prevented. The detector 20 is located outside the collimator 10, that is, the radiation source irradiates the detector 20 through the collimator 10, and two ends of the detector 20 are respectively connected with the first mounting plate 143 and the second mounting plate 144, so as to ensure the stability of the mounting.

The first mounting plate 143 has a first surface and a second surface that are step-distributed, the second mounting plate 144 has a third surface that coincides with the first surface and a fourth surface that coincides with the second surface, the first surface and the third surface form a first mounting surface 141, the second surface and the fourth surface form a second mounting surface 142, the third surface and the fourth surface are also step-distributed, and the first mounting surface 141 is located inside the second mounting surface 142. The two ends of the collimator 10 are connected to the first surface and the third surface, respectively, and the two ends of the detector 20 are connected to the second surface and the fourth surface, respectively. The setting of step, with the both ends of collimator 10, the equal butt in both ends of detector 20, be convenient for carry out collimator 10 and detector 20's location.

In the present embodiment, the main body 1 is integrally cast from an aluminum alloy. After casting, the casting is clamped, the first mounting surface 141 and the second mounting surface 142 are formed by machining, clamping is only needed once, the first mounting surface 141 and the second mounting surface 142 are machined according to the same standard, and machining precision is guaranteed.

The first substrate 11 and the second substrate 12 are both arc-shaped plates, and the concave surfaces of the arc-shaped plates face the ray source. The first substrate 11 has a first inner surface, the second substrate 12 has a second inner surface, the first inner surface and the second inner surface are overlapped, and the first inner surface and the second inner surface are both arc surfaces.

The first substrate 11 has a first outer surface and the second substrate 12 has a second outer surface. A notch 111 is formed on the outer side of the first substrate 11, and a relief space is formed between the notch 111 and the second substrate 12. The indentations 111 are arranged such that the first outer surface is offset from the second outer surface, i.e. the first outer surface is not coincident with the second outer surface. The notch 111 reduces the weight, provides a clearance space for processing the first mounting surface 141 and the second mounting surface 142, and improves the processability. On the other hand, the first base plate 11 is small in size, the bending moment of the first base plate 11 with respect to the support 13 is reduced, and the deformation is reduced, while the second base plate 12 is large in size, and the strength of the main body 1 is increased. Further, in order to secure structural strength, a plurality of reinforcing ribs may be provided on a surface of the first substrate 11 away from the second substrate 12 at the time of casting, the plurality of reinforcing ribs being arranged in a staggered manner to increase the strength of the first substrate 11.

In the present embodiment, the notch 111 is an arc-shaped notch. The notch 111 is disposed in the middle of the first substrate 11 and is symmetrical with respect to the axis of the first substrate 11, so as to ensure the symmetry of the first substrate 11 and prevent uneven stress during rotation.

A plurality of reinforcing plates 2 are arranged between the first substrate 11 and the second substrate 12. One end of the reinforcing plate 2 is connected to the first substrate 11, and the other end of the reinforcing plate 2 is connected to the second substrate 12. Reinforcing plate 2 is disposed in the accommodating space between first substrate 11 and second substrate 12, and is located the outside of the installation body, and reinforcing plate 2 plays a role in supporting and increasing strength. In the present embodiment, two reinforcing plates 2 are disposed between the first substrate 11 and the second substrate 12.

The reinforcing plate 2 is connected with the first substrate 11 and the second substrate 12 through bolts. The first substrate 11 is provided with a first mounting hole for mounting the reinforcing plate 2, and the second substrate 12 is provided with a second mounting hole corresponding to the reinforcing plate 2. In order to reduce the processing strength, the second substrate 12 is provided with the boss 121, and the second mounting hole is formed in the boss 121, so that the processing precision of the surface of the boss 121 is only required to be ensured during processing.

In addition, the main body portion 1 may further include a third substrate, which is located on a side of the second substrate 12 away from the first substrate 11 and is parallel to the second substrate 12 at an interval. A detector 20 and a collimator 10 may also be mounted between the third substrate and the second substrate 12.

When in use, the detector box needs to be installed and fixed, so a plurality of mounting holes are formed on the second substrate 12. The surface of one side of the second substrate 12, which is far away from the first substrate 11, is a positioning surface, and the mounting holes are formed in the positioning surface, i.e., all the mounting holes are processed by using the positioning surface as a reference, so that the processing precision is ensured.

The mounting holes are divided into a positioning pin hole 122 and a main body mounting hole 123 and are used for positioning and fastening when the detector box is mounted. The first mounting surface 141 and the second mounting surface 142 are machined on the casting, and the first mounting hole, the second mounting hole, the positioning pin hole 122 and the main body mounting hole 123 are machined on the same standard, so that the machining precision is guaranteed.

In addition, the positioning surface on the second substrate 12 may be a step surface, and includes at least two planes disposed in parallel at an interval, and each plane is provided with a mounting hole. The positioning pin holes 122 can be arranged on one plane, and the main body mounting holes 123 are arranged on the other plane, so that stress points of the detector box are changed from one plane to two planes in the using process, the plane stress is changed into space stress, and the deformation under the centrifugal force can be better limited.

Referring to fig. 10, the mounting body may have a plurality of radially spaced mounting surfaces, each mounting surface having the detector 20 and the collimator 10 disposed thereon. In order to ensure that the rays of the ray source can irradiate all the installation surfaces, the multiple layers of installation surfaces are not shielded in the radial direction.

The embodiment of the utility model provides a still provide a security installations, including foretell detector box. The detector box can carry the detector 20 and the collimator 10 and is mounted on a security inspection device. Because the first substrate 11 and the second substrate 12 are both arc-shaped plates, the ray source is located at the center of the arc-shaped plates, and a detection area for objects to pass through is formed between the ray source and the detector box.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A sonde case comprising an integrally formed body portion (1), the body portion (1) comprising:

the substrate comprises a first substrate (11) and a second substrate (12) which are arranged in parallel at intervals, and an accommodating space is formed between the first substrate (11) and the second substrate (12);

a support (13) connecting the first substrate (11) and the second substrate (12);

the mounting body is positioned in the accommodating space and connected with the substrate, and at least comprises a mounting surface, wherein the mounting surface is a step surface and extends in an arc shape and is used for mounting the collimator (10) and the detector (20);

the mounting surfaces comprise a first mounting surface (141) and a second mounting surface (142) which are arranged in parallel at intervals, the collimator (10) is connected with the first mounting surface (141), and the detector (20) is connected with the second mounting surface (142).

2. The detector box of claim 1, wherein the mounting body has a plurality of layers of the mounting surfaces spaced radially from one another, the plurality of layers of the mounting surfaces being radially unobstructed.

3. The detector box according to claim 1 or 2, characterized in that the mounting body comprises a first mounting plate (143) and a second mounting plate (144) which are arranged in parallel and spaced apart, the first mounting plate (143) is connected with the first substrate (11), the second mounting plate (144) is connected with the second substrate (12), the outer side surface of the first mounting plate (143) and the outer side surface of the second mounting plate (144) form the mounting surface, and two ends of the collimator (10) are respectively connected with the first mounting plate (143) and the second mounting plate (144).

4. A probe box according to claim 1 or 2, characterized in that a notch (111) is arranged on the outer side of the first substrate (11), and an avoiding space is formed between the notch (111) and the second substrate (12).

5. Detector box according to claim 4, characterised in that the notch (111) is an arc-shaped notch.

6. The detector box according to claim 1 or 2, characterized in that a surface of the second substrate (12) away from the first substrate (11) is a positioning surface, and the positioning surface is provided with a plurality of mounting holes.

7. The detector box of claim 6, wherein the positioning surface is a stepped surface comprising at least two parallel planes spaced apart from each other, each of the planes having the mounting hole.

8. The detector box according to claim 1 or 2, characterized in that the number of the supporting bodies (13) is two, and two supporting bodies (13) are respectively arranged at two ends of the first substrate (11), and the supporting bodies (13) are hollow structures.

9. Detector box according to claim 1 or 2, characterised in that several stiffening plates (2) are arranged between the first base plate (11) and the second base plate (12).

10. A security device comprising a detector box according to any of claims 1-9.