CN203885516U - Vibrating grid device - Google Patents
Vibrating grid device Download PDFInfo
- Publication number
- CN203885516U CN203885516U CN201420207451.8U CN201420207451U CN203885516U CN 203885516 U CN203885516 U CN 203885516U CN 201420207451 U CN201420207451 U CN 201420207451U CN 203885516 U CN203885516 U CN 203885516U
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- CN
- China
- Prior art keywords
- guide rail
- grid
- installing plate
- oscillating
- bucky device
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- Expired - Fee Related
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Abstract
The utility model provides a vibrating grid device. The grid device comprises a first guide rail frame, a second guide rail frame, a first guide rail, a second guide rail, a first grid mounting plate, a second grid mounting plate, a grid, a driving component and a connecting piece, wherein the first guide rail frame and the second guard rail frame, the first guide rail and the second guide rail as well as the first grid mounting plate and the second grid mounting plate are arranged in parallel, respectively; the first guide rail and the second guide rail are respectively and correspondingly arranged on the first guide rail frame and the second guide rail frame. The first grid mounting plate and the second grid mounting plate are respectively fixed on the first guide rail and the second guide rail, and respectively move along the axial direction of the first guide rail and the axial direction of the second guide rail. The grid is arranged between the first grid mounting plate and the second grid mounting plate. The driving component is arranged on the outer side wall of the first guide rail frame, and comprises a motor base, a stepper motor, a ball screw and a feed screw nut. The connecting piece is connected with the first grid mounting plate and the driving component.
Description
Technical field
This utility model relates to X-ray machine field, and is particularly related to a kind of oscillating Bucky device.
Background technology
In x-ray imaging, the existence of scattered rays increases integral image fog density, and contrast reduces, and has a strong impact on picture quality.The application of grid is that the scattered rays that scattering object is sent was excluded before arriving photo, is effective equipment of direct ABSORPTION AND SCATTERING line.The scattered rays that subject sends, because not passing through leads gap with leads angulation, therefore major part be absorbed, thereby reduced the scattered rays amount on photo, greatly improved the contrast of image, improved the quality of image of image.
But ccd detector and flat panel detector generally adopt stationary grid at present, low-density grid in use cannot reach good filtering scattered rays effect, causes there will be irregular plumbous shadow, affects diagnosis.
Utility model content
There is the problem of artifact in this utility model, a kind of oscillating Bucky device is provided in order to overcome existing low-density stationary grid.
To achieve these goals, this utility model provides a kind of oscillating Bucky device, comprises the first guide rail bracket and the second guide rail bracket, the first guide rail and the second guide rail, the first grid installing plate and the second grid installing plate, grid, driven unit and the connector that be arranged in parallel.The first guide rail and the second guide rail are separately positioned on corresponding the first guide rail bracket and the second guide rail bracket.The first grid installing plate and the second grid installing plate are individually fixed on the first guide rail and the second guide rail, and respectively along the first guide rail axially and the axially-movable of the second guide rail.Grid is installed between the first grid installing plate and the second grid installing plate.Driven unit is arranged on the lateral wall of the first guide rail bracket, comprises motor cabinet, motor, ball-screw, feed screw nut, shaft coupling, bearing and bearing block.Motor is fixed on motor cabinet.One end of ball-screw is fixedly connected with the turning cylinder of motor by shaft coupling, and the other end is fixed on bearing block by bearing.Feed screw nut's coaxial sleeve is located at ball screw, matches with ball-screw.Connector connects the first grid installing plate and driven unit.
In this utility model one embodiment, oscillating Bucky device also comprises sensing chip, and sensing chip is arranged at the first grid installing plate.
In this utility model one embodiment, oscillating Bucky device also comprises induction apparatus, and induction apparatus is arranged at the lateral wall of the first guide rail, and induction apparatus is electrically connected motor, in the time that sensing chip moves to the position of induction apparatus, induction apparatus produces the kinestate of triggering signal control step motor.
In this utility model one embodiment, connector is hollow structure, connector coaxial sleeve is located at ball screw, and fix with feed screw nut, the sidewall of connector has boss, the top of boss is provided with fixing hole vertically, and the installing hole on fixing hole and the first grid installing plate is bolted.
In this utility model one embodiment, connector coaxial sleeve is located at the middle part of ball screw, and corresponding, and the installing hole on the first grid installing plate is arranged at the middle part that the first grid installing plate is gone up along its length.
In this utility model one embodiment, the first grid installing plate and the second grid installing plate be detachable the first guide rail and the second guide rail of being arranged at respectively.
In this utility model one embodiment, oscillating Bucky device also comprises base plate, fixed guide frame and flat panel detector.
In sum, the oscillating Bucky device that this utility model provides, compared with prior art has the following advantages: the first grid installing plate and the second grid installing plate axially moving back and forth with the axis of the second guide rail along the first guide rail under the driving of driven unit that grid is installed.The motion of the first grid installing plate and the second grid installing plate drives grid vibration, compared with the stationary grid of equal densities, the grid of vibration can be eliminated the artifact on x-ray imaging photo greatly, has improved the contrast of photo, has improved the picture quality of photo.And driven unit is the actuating device that adopts ball-screw and feed screw nut to match, compare traditional actuating device being formed by cam and connecting rod, the driven unit that this utility model provides can be realized high-speed motion, and has higher stability and control accuracy and longer service life.
In addition, the oscillating Bucky device that this utility model provides is also provided with sensing chip and induction apparatus, sensing chip moves with the first grid installing plate, and in the time that sensing chip moves to the position of induction apparatus, induction apparatus sends the kinestate of triggering signal to motor change motor.The range of movement that adopts electronics mode control the first grid installing plate and the second grid installing plate, has higher control accuracy and control rate.
For above-mentioned and other objects, features and advantages of the present utility model can be become apparent, preferred embodiment cited below particularly, and coordinate accompanying drawing, be described in detail below.
Brief description of the drawings
Figure 1 shows that the perspective view of the oscillating Bucky device that this utility model one embodiment provides.
Figure 2 shows that the front view of the oscillating Bucky device shown in Fig. 1.
Detailed description of the invention
Figure 1 shows that the perspective view of the oscillating Bucky device that this utility model one embodiment provides.Figure 2 shows that the front view of the oscillating Bucky device shown in Fig. 1.See also Fig. 1 and Fig. 2.
The oscillating Bucky device that the present embodiment provides comprises the first guide rail bracket 11 and the second guide rail bracket 12, the first guide rail 21 and the second guide rail 22, the first grid installing plate 31 and the second grid installing plate 32, grid 4, driven unit 5 and the connector 6 that be arranged in parallel.The first guide rail 21 and the second guide rail 22 are separately positioned on corresponding the first guide rail bracket 11 and the second guide rail bracket 12.The first grid installing plate 31 and the second grid installing plate 32 are individually fixed on the first guide rail 21 and the second guide rail 22, and respectively along the first guide rail 11 axially and the axially-movable of the second guide rail 12.Grid 4 is installed between the first grid installing plate 31 and the second grid installing plate 32.Driven unit 5 is arranged on the lateral wall of the first guide rail bracket 11, comprises motor cabinet 51, motor 52, ball-screw 53, feed screw nut 54, shaft coupling 55, bearing and bearing block 56.Motor 52 is fixed on motor cabinet 51.One end of ball-screw 53 is fixedly connected with the turning cylinder of motor 52 by shaft coupling 55, and the other end is fixed on bearing block 56 by bearing.Feed screw nut's 54 coaxial sleeves are located at ball screw 53, match with ball-screw 53.
Connector 6 connects the first grid installing plate 31 and driven unit 5.Connector 6 is hollow structure, and connector 6 coaxial sleeves are located at ball screw 53, and fixes with feed screw nut 54.On the sidewall of connector 6, have boss 61, the top of boss 61 is provided with fixing hole vertically, and the installing hole on fixing hole and the first grid installing plate 31 is bolted.
Because motor 52 can rotate along direction initialization under the control of electric pulse, thereby, realize motor 52 by change electric pulse and rotate and reverse.Make to be connected with the feed screw nut 54 in driven unit 5 by connector 6, be provided with the first grid installing plate 31 of grid 4 and the second grid installing plate 32 under the driving of driven unit 5 respectively along the first guide rail 21 axially and the second guide rail 22 axially reciprocating.The motion of the first grid installing plate 31 and the second grid installing plate 32 drives grid 4 to vibrate.Compared with stationary grid, the grid 4 of vibration has been equivalent to increase the density of grid 4 for X ray, thereby has effectively eliminated image artifacts, improved photo to comparison, greatly improved the quality of image.
Further, due to the first grid installing plate 31 and detachable the first guide rail 21 and the second guide rail 22 of being arranged at of the second grid installing plate 32, this structure is not only easy for installation and the first grid installing plate 31 and the second grid installing plate 32 with different grids 4 can be installed for different detectors, realizes the compatibility between many moneys flat panel detector.
In addition, because the movement time of grid 4 need to be synchronizeed with time of exposure, the control time is short, needs fast movement velocity.And the existing driven unit of realizing vibration reciprocating motion is made up of cam mechanism and linkage.Cam profile machining accuracy is not high, and movement time has been grown easy to wear.In addition, Cam reciprocating high-speed motion can produce rigid shock in the time of velocity jump, in the time realizing high-speed motion, may, because excessive moment of inertia force departs from cam profile, vibrate.And linkage is subject to flat panel detector assembly space limitation larger, can produce impact when motion, and the stability of high-speed motion and precision are all poor, therefore traditional kind of drive cannot meet the requirement of oscillating Bucky motion.
In the present embodiment, the actuating device that driven unit 5 provided by the invention adopts ball-screw 53 and feed screw nut 54 to match.Ball-screw 53 and feed screw nut 54 form spiral rolling track when sheathed, and in raceway, fill up ball.When ball-screw 53 is with respect to feed screw nut 54 inch that rotates, there is axial displacement between the two, ball, along rolling path rolling, greatly reduces frictional resistance, makes ball-screw 53 under the driving of motor 52, realize rotation fast.The first grid installing plate 31 that grid 4 is installed and the second grid installing plate 32 corresponding and that feed screw nut 54 fixes are made rapid movement, greatly increase the vibration velocity of grid 4, also make the movement time of grid 4 synchronize with time of exposure simultaneously.
In addition,, for better controlling the oscillating region of grid 4, the oscillating Bucky device that the present embodiment provides arranges sensing chip 7 on the first grid installing plate 31.And corresponding with this sensing chip 7, the outside of the first guide rail bracket 11 is provided with induction apparatus 8 away from one end of motor 52.In the time that sensing chip 7 moves to induction apparatus 8 residing position with the first grid installing plate 31, induction apparatus 8 produces triggering signal, and this signal is offered to motor 52.Motor 52 stops operating after receiving these triggering signals, prevents and breaks down or the phenomenon of the first grid installing plate 31 and the second grid installing plate 32 getaways when deviation because of motor 52.
In the present embodiment, in order to make grid 4 can realize symmetrical reciprocating motion, connector 6 coaxial sleeves are located to the middle part of ball screw 53.And corresponding, the installing hole on the first grid installing plate 31 is arranged on to the middle part that the first grid installing plate 31 is gone up along its length.
In the present embodiment, for the stability of parts in vibration processes such as fixed flat planar detector and increase the first guide rail bracket 11, the second guide rail bracket 12, the first guide rail 21, the second guide rail 22, the first grid installing plate 31, the second grid installing plate 32, grid 4 and driven units 5, increase base plate 9 in the bottom of guide rail bracket and driven unit 5.
In sum, the oscillating Bucky device that this utility model provides, compared with prior art has the following advantages: be provided with the first grid installing plate 31 of grid 4 and the second grid installing plate 32 under the driving of driven unit 5 along the first guide rail 21 axially and the axially reciprocating of the second guide rail 22.The motion of the first grid installing plate 31 and the second grid installing plate 32 drives grid 4 to vibrate, compared with the stationary grid of equal densities, the grid 4 of vibration can be eliminated the artifact on x-ray imaging photo greatly, has improved the contrast of photo, has improved the picture quality of photo.And the actuating device of driven unit 5 for adopting ball-screw 53 and feed screw nut 54 to match, compare traditional actuating device being formed by cam and connecting rod, the driven unit that this utility model provides can be realized high-speed motion, and has higher stability and control accuracy and longer service life.
In addition, the oscillating Bucky device that this utility model provides is also provided with sensing chip 7 and induction apparatus 8, sensing chip 7 moves with vibration the first grid installing plate 31, in the time that sensing chip 7 moves to the position of induction apparatus 8, induction apparatus 8 sends the kinestate of triggering signal to motor change motor.The range of movement that adopts electronics mode control the first grid installing plate 31 and the second grid installing plate 32, has higher control accuracy and control rate.
Although this utility model is disclosed as above by preferred embodiment; but not in order to limit this utility model; anyly know this skill person; not departing from spirit and scope of the present utility model; can do a little change and retouching, therefore protection domain of the present utility model is when being as the criterion depending on claims scope required for protection.
Claims (7)
1. an oscillating Bucky device, is characterized in that, comprising:
The first guide rail bracket be arrangeding in parallel and the second guide rail bracket;
The first guide rail and the second guide rail, described the first guide rail and the second guide rail are separately positioned on corresponding the first guide rail bracket and the second guide rail bracket;
The first grid installing plate and the second grid installing plate, described the first grid installing plate and the second grid installing plate are individually fixed in described the first guide rail and the second guide rail, and respectively along the first guide rail axially and the axially-movable of the second guide rail;
Grid, is installed between described the first grid installing plate and the second grid installing plate;
Driven unit, is arranged on the lateral wall of the first guide rail bracket, comprising:
Motor cabinet;
Motor, is fixed on described motor cabinet;
Ball-screw, one end of described ball-screw is fixedly connected with the turning cylinder of described motor by shaft coupling, and the other end is fixed on bearing block by bearing;
Feed screw nut, coaxial sleeve is located at described ball screw, matches with described ball-screw;
Connector, connects described the first grid installing plate and driven unit.
2. oscillating Bucky device according to claim 1, is characterized in that, described oscillating Bucky device also comprises sensing chip, and described sensing chip is arranged at described the first grid installing plate.
3. oscillating Bucky device according to claim 2, it is characterized in that, described oscillating Bucky device also comprises induction apparatus, described induction apparatus is arranged at the lateral wall of described the first guide rail, described induction apparatus is electrically connected described motor, in the time that sensing chip moves to the position of induction apparatus, induction apparatus produces the kinestate of triggering signal control step motor.
4. oscillating Bucky device according to claim 1, it is characterized in that, described connector is hollow structure, described connector coaxial sleeve is located at described ball screw, and fix with described feed screw nut, the sidewall of described connector has boss, and the top of described boss is provided with fixing hole vertically, and the installing hole on described fixing hole and described the first grid installing plate is bolted.
5. oscillating Bucky device according to claim 4, it is characterized in that, described connector coaxial sleeve is located at the middle part of described ball screw, and corresponding, and the installing hole on described the first grid installing plate is arranged at the middle part that described the first grid installing plate is gone up along its length.
6. oscillating Bucky device according to claim 1, is characterized in that, described the first grid installing plate and the second grid installing plate be detachable described the first guide rail and the second guide rail of being arranged at respectively.
7. oscillating Bucky device according to claim 1, is characterized in that, described oscillating Bucky device also comprises base plate, fixing described guide rail bracket and flat panel detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420207451.8U CN203885516U (en) | 2014-04-25 | 2014-04-25 | Vibrating grid device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420207451.8U CN203885516U (en) | 2014-04-25 | 2014-04-25 | Vibrating grid device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203885516U true CN203885516U (en) | 2014-10-22 |
Family
ID=51711973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420207451.8U Expired - Fee Related CN203885516U (en) | 2014-04-25 | 2014-04-25 | Vibrating grid device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203885516U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174265A (en) * | 2017-05-19 | 2017-09-19 | 深圳蓝韵医学影像有限公司 | Drive mechanism and X-ray machine |
-
2014
- 2014-04-25 CN CN201420207451.8U patent/CN203885516U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174265A (en) * | 2017-05-19 | 2017-09-19 | 深圳蓝韵医学影像有限公司 | Drive mechanism and X-ray machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 310053 Binjiang District, Zhejiang Province, Hangzhou Road, No. 677 Patentee after: HANGZHOU MEDNOVA MEDICAL TECHNOLOGIES CO.,LTD. Address before: 310053 Binjiang District, Zhejiang Province, Hangzhou Road, No. 677 Patentee before: MEDNOVA MEDICAL TECHNOLOGIES CO.,LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 |