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CN-121983365-A - Anti-backswing shielding curtain and CT security inspection machine thereof

CN121983365ACN 121983365 ACN121983365 ACN 121983365ACN-121983365-A

Abstract

The invention belongs to the technical field of CT (computed tomography), and discloses a backswing-preventing shielding curtain which comprises a plurality of curtain strips, wherein the curtain strips are sheet-shaped, the two side surfaces of the curtain strips are a first side surface and a second side surface, the curtain strips are arranged side by side in the width direction, the first side surface at least comprises a first curved surface, the first curved surface is a concave curved surface, the second side surface is a plane, or the second side surface at least comprises a second curved surface, the second curved surface is a convex curved surface, and the second curved surface is equal to the first curved surface in number and is arranged in pairs in the thickness direction of the curtain strips. And a CT security inspection machine using the anti-backswing shielding curtain. The method is used for reducing the backswing amplitude of the shielding curtain and improving the use efficiency of the internal space of the CT security inspection machine.

Inventors

  • ZHOU ZHIYANG
  • ZOU YIMEI

Assignees

  • 德瑞科(天津)机械制造有限公司

Dates

Publication Date
20260505
Application Date
20251229

Claims (10)

  1. 1. A backswing-proof shielding curtain adapted to be suspended within a security inspection device for shielding radiation in a security inspection tunnel, comprising: The curtain strips are sheet-shaped, and the two side surfaces of the curtain strips are a first side surface and a second side surface respectively; the first side surface at least comprises a first curved surface, and the first curved surface is a concave curved surface; the second side surface is a plane, or, The second side surface at least comprises a second curved surface, the second curved surface is a convex curved surface, the second curved surface is in quantity phase with the first curved surface, and the second curved surface and the first curved surface are arranged in pairs in the thickness direction of the curtain strip.
  2. 2. The anti-backswing shielding curtain according to claim 1, wherein the first curved surface is a curved surface with curvature greater than 0 in the width direction of the curtain strip, or the first curved surface is a curved surface with curvature greater than 0 in the length direction of the curtain strip; the second curved surface is the same as or similar to the first curved surface in shape.
  3. 3. The anti-rollback shielding curtain of claim 1, wherein the first curved surface is a partially spherical curved surface; the second curved surface is the same as or similar to the first curved surface in shape.
  4. 4. The anti-rollback shielding curtain of claim 1 wherein a footprint of the first curved surface is smaller than the first side surface; One of the first curtain strips is provided with a first curved surface, the first curved surface is positioned in the central area of the first side surface, or, The first curtain strip is provided with a plurality of first curved surfaces, and the first curved surfaces are mutually arranged at intervals and are arranged side by side, or in an array or staggered manner on the first side surface; the second curved surface is identical to the first curved surface in size and arrangement rule.
  5. 5. The anti-rollback shielding curtain of claim 1 wherein the first curved surface completely covers the first side surface and the second curved surface completely covers the second side surface.
  6. 6. The anti-rollback shielding curtain of claim 1 wherein said first side and said second side are the same shape and wherein said curtain strip areas are the same thickness.
  7. 7. The anti-backswing shielding curtain according to claim 1, wherein the number of the first curved surfaces on one curtain strip is a plurality of, and the shapes and the sizes of the first curved surfaces are the same or different; the number of the second curved surfaces on one curtain strip is multiple, the shapes and the sizes of the first curved surfaces are the same or different, and the second curved surfaces are arranged in a central symmetry mode on the second side face.
  8. 8. The anti-backswing shielding curtain of claim 7, wherein the number of said first curved surfaces on one said curtain strip is a plurality of, each said first curved surface being spaced apart, the spacing between each said first curved surface progressively decreasing from the edge of said first side to the center of said first side; the arrangement rule of the second curved surface on the second side surface is the same as that of the first curved surface.
  9. 9. The anti-backswing shielding curtain as claimed in claim 1, further comprising a reinforcing layer fixedly arranged in the middle interlayer of the curtain strip, wherein the extending direction of the reinforcing layer is the same as that of the curtain strip, and the first side face and the second side face are respectively positioned on two sides of the reinforcing layer.
  10. 10. A CT security inspection machine having a security inspection channel, comprising at least the anti-rollback shielding curtain of claims 1-9; The anti-backswing shielding curtain is suspended in the security inspection channel, and the top of the anti-backswing shielding curtain is detachably connected with the security inspection machine.

Description

Anti-backswing shielding curtain and CT security inspection machine thereof Technical Field The invention relates to the technical field of CT (computed tomography), in particular to a backswing-preventing shielding curtain and a security inspection machine thereof. Background Be provided with the shielding curtain that prevents radiation escape in the safety inspection passageway of CT security inspection machine, can raise the shielding curtain certain height when article passes through the shielding curtain, after article passes through completely, the shielding curtain can fall back automatically, because inertia effect shielding curtain returns and continues the swing a section distance after falling back to home position, and the shielding curtain of pendulum can interfere the exploration ray of security inspection equipment, in the present product, in order to avoid the shielding curtain interference check out test set of pendulum, reserve sufficient safe space between shielding curtain and the radiation source generally, even shielding curtain pendulum also can not touch article detection area. Therefore, obvious space waste can be caused, and the whole machine type of the security inspection machine is large. Disclosure of Invention The invention aims to provide a backswing-preventing shielding curtain and a security inspection machine thereof, which solve the problem of larger size of the security inspection machine caused by backswing of the shielding curtain in the prior art. To achieve the purpose, the invention adopts the following technical scheme: a backswing-proof shielding curtain adapted to be suspended within a security inspection device for shielding radiation in a security inspection tunnel, comprising: The curtain strips are sheet-shaped, and the two side surfaces of the curtain strips are a first side surface and a second side surface respectively; the first side surface at least comprises a first curved surface, and the first curved surface is a concave curved surface; the second side surface is a plane, or, The second side surface at least comprises a second curved surface, the second curved surface is a convex curved surface, the second curved surface is in quantity phase with the first curved surface, and the second curved surface and the first curved surface are arranged in pairs in the thickness direction of the curtain strip. Preferably, the first curved surface is a curved surface with the curvature of more than 0 in the width direction of the curtain strip, or the first curved surface is a curved surface with the curvature of more than 0 in the length direction of the curtain strip; the second curved surface is the same as or similar to the first curved surface in shape. Preferably, the first curved surface is a partial spherical curved surface; the second curved surface is the same as or similar to the first curved surface in shape. Preferably, the coverage area of the first curved surface is smaller than that of the first side surface; One of the first curtain strips is provided with a first curved surface, the first curved surface is positioned in the central area of the first side surface, or, The first curtain strip is provided with a plurality of first curved surfaces, and the first curved surfaces are mutually arranged at intervals and are arranged side by side, or in an array or staggered manner on the first side surface; the second curved surface is identical to the first curved surface in size and arrangement rule. Preferably, the first curved surface completely covers the first side surface, and the second curved surface completely covers the second side surface. Preferably, the first side surface and the second side surface have the same shape, and the thickness of each area of the curtain strip is the same. Preferably, the number of the first curved surfaces on one curtain strip is a plurality of, and the shapes and the sizes of the first curved surfaces are the same or different; the number of the second curved surfaces on one curtain strip is multiple, the shapes and the sizes of the first curved surfaces are the same or different, and the second curved surfaces are arranged in a central symmetry mode on the second side face. Preferably, the number of the first curved surfaces on one curtain strip is multiple, the first curved surfaces are arranged at intervals, and the distance between the first curved surfaces is gradually reduced from the edge of the first side surface to the center of the first side surface; the arrangement rule of the second curved surface on the second side surface is the same as that of the first curved surface. Preferably, the curtain strip comprises a curtain strip middle interlayer, a first side face and a second side face, wherein the curtain strip middle interlayer is fixedly arranged on the curtain strip, the extending direction of the curtain strip middle interlayer is the same as that of the curtain strip, and the first side fac