CN201223641Y - Rotating platform of two-dimension beam scanners for radiotherapy - Google Patents
Rotating platform of two-dimension beam scanners for radiotherapy Download PDFInfo
- Publication number
- CN201223641Y CN201223641Y CNU2008200637679U CN200820063767U CN201223641Y CN 201223641 Y CN201223641 Y CN 201223641Y CN U2008200637679 U CNU2008200637679 U CN U2008200637679U CN 200820063767 U CN200820063767 U CN 200820063767U CN 201223641 Y CN201223641 Y CN 201223641Y
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- CN
- China
- Prior art keywords
- plate
- lower carrier
- rotating shaft
- rotation shaft
- carrier plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Radiation-Therapy Devices (AREA)
Abstract
A rotary platform of a two-dimensional beam scanner for radiotherapy belongs to supplementary measurement equipment of the field of medical instruments. The rotary platform consists of an upper rotary plate, a lower support plate and a rotation shaft between the plates, which are connected with each other, wherein, corresponding rotation shaft holes are respectively formed at the central position of the upper rotary plate and the lower support plate; the rotation shaft is mounted on the upper rotary plate through the rotation shaft hole and is connected with the lower support plate through a bearing connection rod of the rotation shaft; and four support legs are arranged on the lower plane of the lower support plate. A positioning bolt (4) is arranged in a direction vertical to the rotation shaft hole of the lower support plate; a positioning hole (3) is formed on the upper rotary plate at a position corresponding to the positioning bolt; and a positioning hole (1) and a positioning hole (2) are respectively formed in the horizontal direction and a 45-DEG angle direction. Accordingly, horizontal adjustment, horizontal rotation and rotation fixing of a two-dimensional water tank, and fixed-point arrangement of a dosage detector are controlled to achieve the functions of three-dimensional water tank, so that the water tank can rotate conveniently and accurately to achieve off-axis ratio curve measurement in 90 DEG and 45 DEG, with the position error controlled within 0.2 DEG.
Description
Technical field
This utility model relates to the measurement auxiliary device of medical apparatus and instruments, especially for the rotation platform of radiocurable two dimensional beam profile scanner.
Background technology
Use three-dimensional or two dimensional beam profile scanner to be mainly used in the examination of clinac and the measurement of dosimetry parameter.At present, use two dimensional beam profile beam scanner system (being generally called two-dimentional water tank) when measuring, must be earlier through the overswing position, test then the percentage degree of depth absorbed dose curve of direction (being called for short the PDD curve) and a fixing horizontal direction straight down from axial ratio curve (abbreviation OAR curve).According to existing equipment, if measure another horizontal direction when the axial ratio curve, just the water in the water tank must be discharged, manually rotate 90 ° in water tank, after adding water again and putting the position again, can measure.This process is very loaded down with trivial details, and is time-consuming, and not only bad for operation, and the accuracy of rotational angle also can't guarantee.Therefore need a kind of auxiliary facilities that can guarantee the horizontal direction rotation, finish the mensuration from the axial ratio curve of other horizontal directions quickly and accurately.Still the report that does not have this series products at present both at home and abroad.
The utility model content
The purpose of this utility model provides a kind of rotation platform of two-dimentional water tank scan test system, use this platform, can increase horizontal direction from the test of axial ratio curve and the location fixes that guarantees horizontal adjustment control, the dosage test probe of two-dimentional water tank is put and water tank position of detector after rotation keeps original position.
The purpose of this utility model reaches like this: a kind of rotation platform that is used for radiocurable two dimensional beam profile scanner, it is characterized in that: described rotation platform is formed by connecting by rotating shaft between last swivel plate, lower carrier plate and plate, respectively have the shaft hole of a correspondence at the middle position of last swivel plate and lower carrier plate, rotating shaft is installed on the swivel plate by shaft hole and the bearing connecting rod by rotating shaft is connected with lower carrier plate, at the lower plane of lower carrier plate 4 feets is installed; Vertical direction at the lower carrier plate shaft hole is provided with a pilot pin 4; The position corresponding with pilot pin has locating hole 3 on last swivel plate, also has locating hole 1 and locating hole 2 on level and 45 direction, and each locating hole equates with the distance of shaft hole.
4 runing rests that feet is threaded adjusting swing arm installing on the described lower carrier plate.
Rotating shaft is electronic rotating shaft or manual rotating shaft between described plate.
Be carved with A-B, G-T sign groove respectively with front and back position about described upward swivel plate and lower carrier plate, the intersection point of A-B, G-T groove is the central point of plate.
Good effect of the present utility model is:
Solve the horizontal adjustment control of two-dimentional water tank, guaranteed the tank surface of two-dimentional water tank and the parallel adjusting of horizontal plane; Solved the control that horizontally rotates of two-dimentional water tank, guaranteed 90 ° and in the horizontal direction of water tanks in the rotation of 45 direction.
Mode by pilot pin or motor rotate guarantees that two-dimentional water tank is fixed on appointed positions.
Kept the location fixes of dosage test probe to put, water tank position of detector after rotation keeps original position.
Manually rotation and electronic rotation dual mode are all very convenient.
By the use of this rotation platform, make two-dimentional water tank reach the function of 3 d water tank, can be convenient, rotate water tank accurately, finish 90 °, 45 ° direction of rotation from the axial ratio curved measurement.The site error that horizontally rotates can be controlled in 0.2 °.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the lower carrier plate sketch map;
Fig. 3 goes up the swivel plate sketch map.
Among the figure, 1 locating hole, 2 locating holes, 3 locating holes, 4 pilot pins, 5-1 lower carrier plate shaft hole, the last swivel plate shaft hole of 5-2,6 lower carrier plates, swivel plate on 7,8 feets, rotating shaft between 9 plates.A-B, G-T be the sign groove, respectively the expression about and front and back position.
The specific embodiment
Accompanying drawing has provided a specific embodiment of the present utility model.
Referring to accompanying drawing.
Rotation platform is formed by connecting by rotating shaft between last swivel plate, lower carrier plate and plate, respectively have the shaft hole 5 of a correspondence at the middle position of last swivel plate and lower carrier plate, by shaft hole rotating shaft is installed on the swivel plate and through the bearing connecting rod and is connected with lower carrier plate.Like this, last swivel plate just can rotate on horizontal plane, thereby reaches the purpose of water tank rotation.Rotating shaft can adopt manual rotation and electronic rotation dual mode to carry out, and when adopting electronic rotation, installs motor additional in rotating shaft.
The pilot pin 4 of the vertical direction setting by the lower carrier plate shaft hole and the locating hole of on last swivel plate, offering 3 with the corresponding position of pilot pin, in the horizontal direction, the locating hole 1 that is provided with respectively on the 45 direction and the correspondence of locating hole 2, add bolt-lock and reach the fixing of 90 °, 45 ° position of rotation in the horizontal direction surely.Before the rotation, locating hole 3 is through pilot pin 4 location; Rotate 45 °, locating hole 2 is located through pilot pin; Half-twist, locating hole 1 is located through pilot pin.
Horizontal adjustment control is finished by the feet 8 of lower carrier plate.Four feets are installed on the lower plane of lower carrier plate, and feet is a runing rest, and each foot has the threaded adjusting swing arm, finishes the position height of each foot and regulates, and finishes the horizontal adjustment of rotation platform, guarantees that the horizontal level of water tank is constant.
Observation when rotating for convenience, about on last swivel plate and the lower carrier plate, all be carved with A-B, G-T sign groove with front and back position, whether align with " ten " word line of the light open country of accelerator by observing markings, judge whether easily to be rotated in place, thereby finish 90 °, 45 ° rotations.Simultaneously, for the location fixes that guarantees the dosage test probe is put, vertical projection keeps the invariant position at water tank detector center after rotation on the intersection point of A-B, G-T.
Claims (5)
1, a kind of rotation platform that is used for radiocurable two dimensional beam profile scanner, it is characterized in that: described rotation platform is formed by connecting by rotating shaft between last swivel plate, lower carrier plate and plate, respectively have the shaft hole of a correspondence at the middle position of last swivel plate and lower carrier plate, rotating shaft is installed on the swivel plate by shaft hole and the bearing connecting rod by rotating shaft is connected with lower carrier plate, at the lower plane of lower carrier plate 4 feets is installed; Vertical direction at the lower carrier plate shaft hole is provided with a pilot pin (4); The position corresponding with pilot pin has locating hole (3) on last swivel plate, also has locating hole (1) and locating hole (2) on level and 45 direction, and each locating hole equates with the distance of shaft hole.
2, rotation platform as claimed in claim 1 is characterized in that: 4 runing rests that feet is threaded adjusting swing arm installing on the described lower carrier plate.
3, rotation platform as claimed in claim 1 is characterized in that: rotating shaft is electronic rotating shaft between described plate.
4, rotation platform as claimed in claim 1 is characterized in that: rotating shaft is manual rotating shaft between described plate.
5, rotation platform as claimed in claim 1 is characterized in that: be carved with A-B, G-T sign groove respectively with front and back position about described upward swivel plate and lower carrier plate, the intersection point of A-B, G-T groove is the central point of plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200637679U CN201223641Y (en) | 2008-06-12 | 2008-06-12 | Rotating platform of two-dimension beam scanners for radiotherapy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200637679U CN201223641Y (en) | 2008-06-12 | 2008-06-12 | Rotating platform of two-dimension beam scanners for radiotherapy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201223641Y true CN201223641Y (en) | 2009-04-22 |
Family
ID=40596519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200637679U Expired - Lifetime CN201223641Y (en) | 2008-06-12 | 2008-06-12 | Rotating platform of two-dimension beam scanners for radiotherapy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201223641Y (en) |
-
2008
- 2008-06-12 CN CNU2008200637679U patent/CN201223641Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090422 |