CN217640685U - Accelerator CT dual-function front collimating device - Google Patents
Accelerator CT dual-function front collimating device Download PDFInfo
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- CN217640685U CN217640685U CN202221000826.4U CN202221000826U CN217640685U CN 217640685 U CN217640685 U CN 217640685U CN 202221000826 U CN202221000826 U CN 202221000826U CN 217640685 U CN217640685 U CN 217640685U
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Abstract
The utility model discloses a difunctional preceding collimating device of accelerator CT, include: the radiation shielding device comprises a frame plate, a micro linear guide rail, a sliding block, a coupler, a speed reducing motor, a motor support, a trapezoidal lead screw, a flange bearing, a bearing seat, a nut seat, a radiation shielding plate A, a radiation shielding plate B, a radiation shielding plate C, a radiation shielding plate D, a driving connecting plate, a front shell, a rear shell lining plate, a socket fixing bent plate, a socket and a lifting ring screw; through control gear motor, control radiation shielding plate respectively and remove, in the application, the ray passes this device, shelters from the bundle of rays, makes the bundle of rays shoot out with fan-shaped shape or toper shape, carries out high quality adjustable fan-beam collimation and cone beam collimation adjustment correction to the bundle of rays, owing to adopt automatically controlled transmission technology, has solved the various drawbacks of traditional manual adjustment, has improved detection efficiency greatly, and positioning accuracy is more accurate, plays vital function to improving CT image quality, is suitable for extensive popularization.
Description
Technical Field
The utility model relates to a collimation technical field before the CT accelerator, a difunctional preceding collimating device of accelerator CT specifically says so.
Background
A ray beam side collimation device in an industrial CT system is one of very important components, plays a great role in inhibiting scattered ray interference, reducing ray beam hardening and improving spatial resolution, and needs to be provided with high-quality adjustable fan beam collimation and cone beam collimation devices for a double-detector accelerator CT detection system.
The prior collimating technology of the current accelerator CT detection system is still a means of manual adjustment and replacement, most of fan beam collimating devices and cone beam collimating devices are additionally arranged at beam outlet ports of an accelerator and are fixed by manual screws, when fan beam rays are needed, the fan beam collimating devices need to be fixed at the beam outlet ports of the accelerator, when cone beam rays are needed, the fan beam collimating devices need to be manually dismounted and replaced by the cone beam collimating devices, and when the width needs to be adjusted, the screws need to be manually loosened and then fixed for multiple times.
Disclosure of Invention
To the above-mentioned problem, in order to overcome the not enough of above-mentioned prior art, the utility model provides a difunctional preceding collimating device of accelerator CT.
The utility model adopts the technical proposal that: an accelerator CT dual-function front collimation device, comprising: the device comprises a frame plate, a miniature linear guide rail, a sliding block, a coupler, a speed reducing motor, a motor support, a trapezoidal lead screw, a flange bearing, a bearing seat, a nut seat, a radiation shielding plate A, a radiation shielding plate B, a radiation shielding plate C, a radiation shielding plate D, a driving connecting plate, a front shell, a rear shell lining plate, a socket fixing bent plate, a socket and a lifting ring screw;
two groups of miniature linear guide rails are respectively arranged on the upper side and the lower side of a front central square hole of a frame plate, two groups of sliding blocks are respectively arranged on each guide rail on the upper group of miniature linear guide rails and the lower group of miniature linear guide rails, a radiation shielding plate A is connected and arranged at two ends of the upper group of sliding blocks and the lower group of sliding blocks, a radiation shielding plate B is connected and arranged at two ends of the other group of sliding blocks, the radiation shielding plate A and the radiation shielding plate B form a split optical gate moving in a left-right parallel mode, motor supports are respectively arranged on the upper end and the lower end fixed on the front side of the frame plate, a speed reducing motor is connected and arranged on the motor supports, two bearing seats are arranged on a front frame plate of the speed reducing motor, flange bearings are arranged in the bearing seats, trapezoidal lead screws are arranged on the flange bearings, shaft couplings are arranged at input ends of the lead screws, nuts are arranged on the trapezoidal lead screws, nut are provided with nut seats, the nut seats and fixedly integrated with the nuts, driving connecting plates are connected on the nut seats, the driving connecting plates are respectively connected with the radiation shielding plate A and the radiation shielding plate B, the speed reducing motor drives the trapezoidal lead screws to rotate to drive the nuts to move, and the radiation shielding plate A and the radiation shielding plate B to move left and right on the miniature linear guide rails; two groups of miniature linear guide rails are respectively arranged on the left side and the right side of a central square hole in the back surface of the frame plate, two groups of sliding blocks are respectively arranged on each guide rail on the left group of miniature linear guide rails and the right group of miniature linear guide rails, a radiation shielding plate C is connected and arranged at two ends of one group of sliding blocks on the left side and the right side, a radiation shielding plate D is connected and arranged at two ends of the other group of sliding blocks, the radiation shielding plate C and the radiation shielding plate D form a split optical gate capable of moving up and down in parallel, motor supports are respectively arranged at the left end and the right end fixed on the back surface of the frame plate, a speed reducing motor is connected and arranged on the motor supports, two bearing supports are arranged on the frame plate at the front end of the speed reducing motor, a trapezoidal lead screw is arranged on each flange bearing, a coupler is arranged at the input end of the lead screw, the other end of the coupler is connected with an output shaft of the speed reducing motor, a screw is arranged on the trapezoidal lead screw, a screw seat is arranged on the screw, the screw seat is fixedly integrated with the screw, a driving connecting plate, the driving connecting plate C is respectively connected with the radiation shielding plate C and the radiation shielding plate D, the screw is driven by the speed reducing motor to rotate to drive the screw to move, and drive the radiation shielding plate A and the radiation shielding plate B to move on the miniature linear guide rails; the speed reducing motor drives the trapezoidal lead screw to rotate so as to drive the screw nut to move, and the screw nut drives the radiation shielding plate C and the radiation shielding plate D to move up and down on the miniature linear guide rail;
the front outer side of the frame plate is provided with a front shell, the back side of the frame plate is provided with a back shell, the middle of the back shell is bonded with a back shell lining plate, one end of the back side of the frame plate is provided with a socket fixing bent plate, a socket penetrates through the back shell to be connected with the socket fixing bent plate, and a lifting bolt penetrates through the back shell to be connected and fixed with the upper part of the frame plate.
The radiation shielding plate A, the radiation shielding plate B, the radiation shielding plate C and the radiation shielding plate D are formed by riveting a lead block on a bottom plate.
Wherein the bottom plate material is tungsten iron material.
Wherein the thickness of the lead plate for the lead block is more than or equal to 30mm and less than or equal to 50mm.
The radiation shielding plate A, the radiation shielding plate B, the radiation shielding plate C and the radiation shielding plate D are respectively driven by four speed reducing motors and independently controlled to independently move.
Wherein the radiation shielding plate A and the radiation shielding plate B moving left and right are vertically arranged at an angle of 90 degrees with the radiation shielding plate C and the radiation shielding plate D moving up and down.
Compared with the prior art, the utility model discloses owing to take above technical scheme, adopt automatically controlled transmission technology, fundamentally has solved the various drawbacks of traditional manual adjustment, reduces operating personnel business turn over guard room number of times, and is simpler convenient than traditional operation, has improved detection efficiency greatly, can realize remote control, and positioning accuracy is more accurate, plays vital function to improving CT image quality, is suitable for extensive popularization.
Drawings
FIG. 1 is a front view of the utility model;
fig. 2 is a rear view of the utility model;
figure 3 is a side cross-sectional view of the utility model;
in the figure: 1. the radiation shielding plate comprises a frame plate, 2, a miniature linear guide rail, 3, a sliding block, 4, a coupler, 5, a speed reducing motor, 6, a motor support, 7, a trapezoidal screw rod, 8, a flange bearing, 9, a bearing seat, 10, a nut, 11, a nut seat, 12, radiation shielding plates A,13, radiation shielding plates B,14, radiation shielding plates C,15, radiation shielding plates D,16, a driving connecting plate, 17, a front shell, 18, a rear shell, 19, a rear shell lining plate, 20, a socket fixing bent plate, 21, a socket, 22, a lifting ring screw, 23, a bottom plate and 24 lead blocks.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
An accelerator CT dual-function front collimation device, comprising: the radiation shielding device comprises a frame plate 1, a micro linear guide rail 2, a sliding block 3, a coupling 4, a speed reducing motor 5, a motor support 6, a trapezoidal lead screw 7, a flange bearing 8, a bearing seat 9, a nut 10, a nut seat 11, a radiation shielding plate A12, a radiation shielding plate B13, a radiation shielding plate C14, a radiation shielding plate D15, a driving connecting plate 16, a front shell 17, a rear shell 18, a rear shell lining plate 19, a socket fixing bent plate 20, a socket 21 and a lifting ring screw 22;
two groups of miniature linear guide rails 2 are respectively arranged on the upper side and the lower side of a front center square hole of a frame plate 1, two groups of sliders 3 are respectively arranged on each guide rail on the upper group of miniature linear guide rails 2 and the lower group of miniature linear guide rails 2, wherein a radiation shielding plate A12 is connected and arranged at two ends of the upper group of sliders 3 and the lower group of sliders 3, a radiation shielding plate B13 is connected and arranged at two ends of the other group of sliders 3, the radiation shielding plate A12 and the radiation shielding plate B13 form a split light gate moving in a left-right parallel mode, motor supports 6 are respectively arranged at the upper end and the lower end of the front side of the frame plate 1, a speed reducing motor 5 is connected and arranged on the motor supports 6, two bearing supports 9 are arranged on the frame plate 1 at the front end of the speed reducing motor 5, a flange bearing 8 is arranged in each bearing support 9, a trapezoidal lead screw 8 is arranged on each flange bearing 8, a coupling 4 is arranged at the input end of the lead screw 8, the other end of the coupling 4 is connected with an output shaft of the speed reducing motor 5, a lead screw 10 is arranged on the trapezoidal lead screw 7, a lead screw 10, a lead screw 11 and a nut 10 are fixedly integrated with the lead screw 10, a drive screw 16 is arranged on the lead screw seat 11, the lead screw 12 and a radiation shielding plate B13, the radiation shielding plate B13, and a radiation shielding plate 2 move linearly and drive the radiation shielding plate; two groups of miniature linear guide rails 2 are respectively arranged on the left side and the right side of a central square hole in the back surface of a frame plate 1, two groups of sliders 3 are respectively arranged on each guide rail on the left group of miniature linear guide rails 2 and the right group of miniature linear guide rails 2, a radiation shielding plate C14 is connected and arranged at two ends of one group of sliders 3, a radiation shielding plate D15 is connected and arranged at two ends of the other group of sliders 3, the radiation shielding plate C14 and the radiation shielding plate D15 form a split optical gate which can move up and down in parallel, a motor support 6 is respectively arranged at the left end and the right end which are fixed on the back surface of the frame plate 1, a speed reducing motor 5 is connected with the motor support 6, two bearing seats 9 are arranged on a frame plate 1 at the front end of the speed reducing motor 5, a flange bearing 8 is arranged in each bearing seat 9, a trapezoidal lead screw 7 is arranged on each flange bearing 8, a coupling 4 is arranged at the input end of the lead screw 7, the other end of the coupling 4 is connected with an output shaft of the speed reducing motor 5, a nut 10 is arranged on the trapezoidal lead screw 7, a nut 10, a screw seat 11 is fixedly integrated with the nut 10, a drive connecting plate 16 is connected with a drive connecting plate C14, a radiation shielding plate C14 which drives a radiation shielding plate B to move and a radiation shielding plate B to move linearly and drive the radiation shielding plate B to move on the radiation shielding plate B to move; the speed reducing motor 5 drives the trapezoidal lead screw 7 to rotate to drive the screw nut 10 to move, and the screw nut 10 drives the radiation shielding plate C14 and the radiation shielding plate D15 to move up and down on the miniature linear guide rail 2; the front shell 17 is arranged on the outer side of the front surface of the frame plate 1, the back shell 18 is arranged on the back surface of the frame plate 1, the back shell lining plate 19 is adhered in the middle of the back shell 18, the socket fixing bent plate 20 is arranged at one end of the back surface of the frame plate 1, and the socket 21 penetrates through the back shell 18 to be connected with the socket fixing bent plate 20. The lifting bolt 22 passes through the rear shell 18 and is fixedly connected with the upper part of the frame plate 1.
The radiation shielding plate A12, the radiation shielding plate B13, the radiation shielding plate C14 and the radiation shielding plate D15 are formed by riveting a lead block 24 on a bottom plate 23.
The bottom plate 23 is made of ferrotungsten and has strong ray absorption capacity.
Wherein the thickness of the lead plate used for the lead block 24 is more than or equal to 30mm and less than or equal to 50mm.
The radiation shielding plate A12, the radiation shielding plate B13, the radiation shielding plate C14 and the radiation shielding plate D15 are respectively driven by four speed reducing motors 5 and independently controlled to independently move.
Wherein the radiation shielding plate A12 and the radiation shielding plate B13 moving left and right are vertically arranged at 90 degrees to the radiation shielding plate C14 and the radiation shielding plate D15 moving up and down.
The radiation shielding plate A12, the radiation shielding plate B13, the radiation shielding plate C14 and the radiation shielding plate D15 are respectively controlled to move by controlling the speed reducing motor 5, and in the application process, rays pass through the device to shield ray bundles, so that the ray bundles are shot in a fan shape or a cone shape.
In a double-detector accelerator CT detection system, the device is additionally arranged at a beam outlet of an accelerator, and high-quality adjustable fan beam collimation and cone beam collimation adjustment and correction are carried out on a ray beam.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and particularly, all technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not intended to be limited to the particular embodiments disclosed herein, but rather to include all embodiments falling within the scope of the appended claims.
In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the concept of the present invention within the technical scope of the present invention.
Claims (6)
1. The utility model provides a difunctional preceding collimating device of accelerator CT which characterized in that: the method comprises the following steps: the device comprises a frame plate, a miniature linear guide rail, a sliding block, a coupler, a speed reducing motor, a motor support, a trapezoidal lead screw, a flange bearing, a bearing seat, a nut seat, a radiation shielding plate A, a radiation shielding plate B, a radiation shielding plate C, a radiation shielding plate D, a driving connecting plate, a front shell, a rear shell lining plate, a socket fixing bent plate, a socket and a lifting ring screw;
two groups of miniature linear guide rails are respectively arranged on the upper side and the lower side of a front central square hole of a frame plate, two groups of sliding blocks are respectively arranged on each guide rail on the upper group of miniature linear guide rails and the lower group of miniature linear guide rails, a radiation shielding plate A is connected and arranged at two ends of the upper group of sliding blocks and the lower group of sliding blocks, a radiation shielding plate B is connected and arranged at two ends of the other group of sliding blocks, the radiation shielding plate A and the radiation shielding plate B form a split optical gate moving in a left-right parallel mode, motor supports are respectively arranged on the upper end and the lower end fixed on the front side of the frame plate, a speed reducing motor is connected and arranged on the motor supports, two bearing seats are arranged on a front frame plate of the speed reducing motor, flange bearings are arranged in the bearing seats, trapezoidal lead screws are arranged on the flange bearings, shaft couplings are arranged at input ends of the lead screws, nuts are arranged on the trapezoidal lead screws, nut are provided with nut seats, the nut seats and fixedly integrated with the nuts, driving connecting plates are connected on the nut seats, the driving connecting plates are respectively connected with the radiation shielding plate A and the radiation shielding plate B, the speed reducing motor drives the trapezoidal lead screws to rotate to drive the nuts to move, and the radiation shielding plate A and the radiation shielding plate B to move left and right on the miniature linear guide rails; two groups of miniature linear guide rails are respectively arranged on the left side and the right side of a central square hole in the back surface of the frame plate, two groups of sliding blocks are respectively arranged on each guide rail on the left group of miniature linear guide rails and the right group of miniature linear guide rails, a radiation shielding plate C is connected and arranged at two ends of one group of sliding blocks on the left side and the right side, a radiation shielding plate D is connected and arranged at two ends of the other group of sliding blocks, the radiation shielding plate C and the radiation shielding plate D form a split optical gate capable of moving up and down in parallel, motor supports are respectively arranged at the left end and the right end fixed on the back surface of the frame plate, a speed reducing motor is connected and arranged on the motor supports, two bearing supports are arranged on the frame plate at the front end of the speed reducing motor, a trapezoidal lead screw is arranged on each flange bearing, a coupler is arranged at the input end of the lead screw, the other end of the coupler is connected with an output shaft of the speed reducing motor, a screw is arranged on the trapezoidal lead screw, a screw seat is arranged on the screw, the screw seat is fixedly integrated with the screw, a driving connecting plate, the driving connecting plate C is respectively connected with the radiation shielding plate C and the radiation shielding plate D, the screw is driven by the speed reducing motor to rotate to drive the screw to move, and drive the radiation shielding plate A and the radiation shielding plate B to move on the miniature linear guide rails; the speed reducing motor drives the trapezoidal lead screw to rotate so as to drive the screw nut to move, and the screw nut drives the radiation shielding plate C and the radiation shielding plate D to move up and down on the miniature linear guide rail;
the front outer side of the frame plate is provided with a front shell, the back side of the frame plate is provided with a back shell, the middle of the back shell is bonded with a back shell lining plate, one end of the back side of the frame plate is provided with a socket fixing bent plate, a socket penetrates through the back shell to be connected with the socket fixing bent plate, and a lifting bolt penetrates through the back shell to be connected and fixed with the upper part of the frame plate.
2. An accelerator CT dual function front collimating apparatus as claimed in claim 1, wherein: the radiation shielding plate A, the radiation shielding plate B, the radiation shielding plate C and the radiation shielding plate D are formed by riveting a lead block on a bottom plate.
3. An accelerator CT dual function front collimating apparatus as claimed in claim 2, wherein: wherein the bottom plate material is tungsten iron material.
4. An accelerator CT dual function front collimating apparatus as claimed in claim 2, wherein: wherein the thickness of the lead plate is more than or equal to 30mm and less than or equal to 50mm.
5. An accelerator CT dual function front collimating apparatus as claimed in claim 1, wherein: the radiation shielding plate A, the radiation shielding plate B, the radiation shielding plate C and the radiation shielding plate D are respectively driven by four speed reducing motors and independently controlled to independently move.
6. An accelerator CT dual function front collimating apparatus as claimed in claim 1, wherein: wherein the radiation shielding plate A and the radiation shielding plate B moving left and right are vertically arranged at 90 degrees with the radiation shielding plate C and the radiation shielding plate D moving up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221000826.4U CN217640685U (en) | 2022-04-28 | 2022-04-28 | Accelerator CT dual-function front collimating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221000826.4U CN217640685U (en) | 2022-04-28 | 2022-04-28 | Accelerator CT dual-function front collimating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217640685U true CN217640685U (en) | 2022-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221000826.4U Active CN217640685U (en) | 2022-04-28 | 2022-04-28 | Accelerator CT dual-function front collimating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217640685U (en) |
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2022
- 2022-04-28 CN CN202221000826.4U patent/CN217640685U/en active Active
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