CN210225863U - Leveling device for medical accelerator - Google Patents
Leveling device for medical accelerator Download PDFInfo
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- CN210225863U CN210225863U CN201920604858.7U CN201920604858U CN210225863U CN 210225863 U CN210225863 U CN 210225863U CN 201920604858 U CN201920604858 U CN 201920604858U CN 210225863 U CN210225863 U CN 210225863U
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Abstract
The application provides a homogenizer for a medical accelerator, which comprises an outer frame component; the uniform block moving assembly is used for bearing a uniform block and can slide in the outer frame assembly along the X direction; the driving component is fixedly arranged on the outer frame component and is used for driving the integral moving component to slide relative to the outer frame component; the positioning assemblies are fixedly arranged at two end parts of the outer frame assembly and have working states and non-working states: when the positioning assembly is in a working state, the positions of the integral moving assemblies relative to the outer frame assembly are fixed; when the positioning assembly is in a non-working state, the integral moving assemblies can slide relative to the outer frame assembly under the driving of the driving assembly. The position of the equalizing block can be accurately adjusted by the equalizing device, the equalizing block can be ensured not to change in the running process of the machine, and serious distortion caused by ray radiation distribution is avoided.
Description
Technical Field
The utility model relates to a medical accelerator technical field, in particular to an equalizer for accelerator.
Background
The radiation head of the existing medical accelerator can be switched back and forth at the center of the ray by a mechanism so as to achieve different treatment modes. The position accuracy of the equalizing block has great influence on the quality of rays, and the position deviation of the equalizing block can cause the radiation distribution of the rays to generate serious distortion, so that higher requirements are provided for the movement accuracy of the equalizing block and the capability of keeping the accuracy in the running process of a machine after the equalizing block reaches the position.
SUMMERY OF THE UTILITY MODEL
In view of the defects in the background art, the utility model provides an equalizer for medical accelerator, include:
an outer frame assembly;
the uniform block moving assembly is used for bearing a uniform block and can slide in the outer frame assembly along the X direction;
the driving component is fixedly arranged on the outer frame component and is used for driving the integral moving component to slide relative to the outer frame component;
the positioning assemblies are fixedly arranged at two end parts of the outer frame assembly and have working states and non-working states:
when the positioning assembly is in a working state, the positions of the integral moving assemblies relative to the outer frame assembly are fixed;
when the positioning assembly is in a non-working state, the integral moving assemblies can slide relative to the outer frame assembly under the driving of the driving assembly.
In some embodiments of the present invention, the monolith movement assembly comprises a movement frame; the bearing sheet is arranged on the moving frame; and the adjusting element is arranged on the moving frame and is used for adjusting the position of the bearing sheet in the Y direction relative to the moving frame.
The utility model provides an equalizer for medical accelerator, this equalizer's outer frame subassembly can provide X to the direction for the equal monoblock removal subassembly that bears the weight of the equal monoblock to adopt locating component to fix the equal monoblock removal subassembly when operating condition, in order to ensure equal monoblock position precision, avoid leading to the ray radiation to distribute because of positional deviation and produce serious distortion.
In some embodiments of the present invention, the carrier sheet has an aperture; the adjusting element is a fine adjusting bolt which is arranged on the wall of the movable frame and matched with the hole.
The equalizer for medical accelerator that this embodiment provided adopts carrier sheet and fine tuning bolt to carry out Y to the average piece removal subassembly and to the fine setting, wherein Y to and X to mutually perpendicular, further ensure the position accuracy of equal monoblock, avoid leading to ray radiation distribution to produce serious distortion because of positional deviation.
In some embodiments of the present invention, the equalizing block moving assembly comprises an equalizing block and an electronic wire diffuser fixedly disposed on the carrier sheet in sequence along the X direction; a lead shield fixedly disposed on the moving frame and positioned over the uniformizing block and the electronic wire diffuser.
In some embodiments of the present invention, the block moving assembly comprises a rail block fixedly disposed on an outer side surface of the moving frame; the outer frame assembly includes a base plate; the first side plate and the second side plate are fixedly arranged on the bottom plate at intervals, and a space for accommodating the uniform moving assembly is formed by the first side plate and the second side plate; the guide rail is at least arranged on the inner wall of one of the first side plate and the second side plate; the guide rail sliding block is matched with the guide rail.
The U-shaped outer frame component has good structural rigidity, and can provide reliable X-direction guiding for the uniform block on the bearing sheet and the electronic diffuser by matching with the guide rail.
In some embodiments of the present invention, the block-even moving assembly includes pin bushings disposed at both ends of the moving frame; the positioning assembly comprises an electromagnet mounting plate fixedly arranged at the bottom of the outer frame assembly; the spring fixing plate is fixedly arranged at the bottom of the outer frame component or on the electromagnet mounting plate, and a first accommodating space is defined between the electromagnet mounting plate and the spring fixing plate; the push-pull electromagnet is fixedly arranged on the electromagnet mounting plate and is positioned in the first accommodating space; the pin guide frame is fixedly arranged on the spring fixing plate, and a second accommodating space is formed between the pin guide frame and the spring fixing plate; the pin is movably arranged in the second accommodating space, a spring is sleeved at the bottom end of the pin, the end of the pin is associated with the output shaft of the push-pull electromagnet, and the top end of the pin can be extended outwards by the pin guide frame and is matched with the pin sleeve.
In the embodiment, the pins are matched with the pin sleeves, and the pins are popped out when the leveling moving assemblies move to the corresponding positions and are inserted into the corresponding pin sleeves, so that the leveling positions are not changed in the running process of the accelerator. After the accelerator is operated, the pin is pulled out of the pin sleeve through the push-pull type electromagnet, and the position of the uniform moving assembly is moved out or adjusted.
In some embodiments of the present invention, the drive assembly comprises a ball screw secured to the outer frame assembly by a bearing block; the nut is arranged on the ball screw and can move along the ball screw, and the nut is connected with the uniform moving assembly; the first gear is fixedly arranged at one end part of the ball screw; an electromagnetic brake and a rotary converter fixedly arranged at the other end part of the ball screw in sequence; a servo motor fixedly arranged on the outer frame component; the second gear is arranged on the output shaft of the servo motor; the first gear and the second gear are intermeshed.
In some embodiments of the present invention, the leveling device for the medical accelerator is mounted in the outer frame assembly and located in the leveling moving assembly and the ionization chamber between the outer frame assemblies.
Drawings
Fig. 1 is an exploded view of a homogenizer according to an embodiment of the present invention;
FIG. 2 is an assembly view of a homogenizer according to an embodiment of the present invention;
fig. 3 is an exploded view of a uniform moving assembly according to an embodiment of the present invention;
fig. 4 is an exploded view of an outer frame assembly according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a driving assembly according to an embodiment of the present invention;
fig. 6 is an exploded view of a positioning assembly according to an embodiment of the present invention.
The labels in the figure are explained as follows:
1, a block moving assembly, a 101 moving frame, a 102 guide rail slide block, a 103 fine adjustment bolt, a 104 pin sleeve, a 105 bearing sheet, a 106 block, a 107 electronic wire scatterer and a 108 lead shield;
2 outer frame assembly, 201 first side plate, 202 bottom plate, 203 second side plate, 204 guide rail;
3, a driving assembly, 301 a second gear, 302 a servo motor, 303 a ball screw, 304 an electromagnetic brake, 305 a rotary transformer and 306 a first gear;
4 positioning components, 401 pin guide frames, 402 pins, 403 springs, 404 spring fixing plates, 405 push-pull electromagnets and 406 electromagnet mounting plates.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is described in further detail with reference to the accompanying drawings and specific embodiments. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.
As shown in fig. 1 and 2, the present embodiment provides an equalizer for a medical accelerator, which includes an equalizer moving assembly 1, an outer frame assembly 2, a driving assembly 3, and a positioning assembly 4.
With reference to fig. 3, wherein the block moving assembly 1 carries a block 106 thereon, the block moving assembly 1 can slide in the outer frame assembly 2 along the X direction. The driving assembly 3 is fixedly disposed on the outer frame assembly 2, and is used for driving the block moving assembly 1 to slide relative to the outer frame assembly 2. The positioning assemblies 4 are fixedly disposed at two end portions of the outer frame assembly 2, and are used for limiting the whole moving assembly 1 to be capable of sliding in the X direction in the outer frame assembly 2. In particular, the positioning assembly 4 has an operating state and a non-operating state: when the positioning component 4 is in the working state, the position of the whole moving component 1 relative to the outer frame component 2 is fixed. When the positioning assembly 4 is in a non-working state, the whole moving assembly 1 can slide relative to the outer frame assembly 2 under the drive of the drive assembly 3.
As shown in fig. 3, the monolith moving assembly 1 includes a moving frame 101, a carrier sheet 105 (for carrying the monoliths) disposed on the moving frame 101, and an adjusting element disposed on the moving frame 101 for adjusting the position of the carrier sheet 105 in the Y direction relative to the moving frame 101.
In particular, the carrier plate 105 has holes therein, and the adjustment elements are fine adjustment bolts 103 provided on the wall of the moving frame 101 to match the holes. Therefore, turning the fine adjustment bolt 103 can control the carrier 105 to move in the Y direction in the square groove of the moving frame 101, thereby completing the fine adjustment operation.
Continuing to refer to fig. 3, the monolith moving assembly 1 further comprises a monolith 106 and an electronic wire scatterer 107 fixed to the upper surface of the carrier sheet 105 by bolts, and a lead shield 108 fixed to the monolith moving frame 101 by bolts. A lead shield 108 is positioned over the homogenizing block 106 and the electron beam diffuser 107. The equalizing block 106 and the electron beam scatterer 107 are arranged in order in the X direction. Therefore, when the whole moving assembly 1 moves along the X direction, the electron beam current and the X-ray treatment mode can be switched.
Referring to fig. 3 and 4, the block-type moving assembly 1 includes a rail block 102 fixedly installed on an outer side surface of a moving frame 101 by bolts.
The outer frame assembly 2 includes a bottom plate 202, a first side plate 201, and a second side plate 203. The first side plate 201, the bottom plate 202 and the second wall plate 203 are connected together by bolts to form a U-shaped frame structure, and at least one guide rail 204 is fixed on the inner wall of one of the first side plate 201 and the second side plate 203 by bolts.
The rail slides 102 and rails 204 described above mate to enable the outer frame assembly 2 to provide guidance to the uniform moving assembly 1.
Referring to fig. 3 and 5, the integral moving assembly 1 includes pin sleeves 104 welded to both ends of the moving frame 101. The positioning assembly 4 comprises a pin guide frame 401, a pin 402, a spring 403, a spring fixing plate 404, a push-pull electromagnet 405 and an electromagnet mounting plate 406.
The electromagnet mounting plate 406 is connected to the equalizer outer frame assembly 2 (may be connected to the bottom plate 22 of the outer frame assembly 2) by bolts, and the spring fixing plate 404 is fixedly disposed at the bottom of the outer frame assembly 2, or may be disposed on the electromagnet mounting plate 406, and a first accommodating space is defined therebetween. The push-pull electromagnet 405 is fixed on the electromagnet mounting plate 406 by bolts and is located in the first accommodation space. The pin guide frame 401 and the spring fixing plate 404 are connected into a whole by bolts, and a second accommodating space is formed between the two. A pin 402 is movably disposed in the second accommodating space, a spring 403 is sleeved at the bottom end of the pin 402 and connected with an output shaft of the push-pull electromagnet 405, and the top end of the pin 402 can extend outwards from the pin guide frame 401 and is matched with the pin sleeve 104.
The push-pull electromagnet 405 drives the pin 402 to fix and release the position of the upper-layer integral moving assembly 1, and when the push-pull electromagnet 405 does not work, the pin 402 is pressed into the pin sleeve 104 by the elastic force of the spring 403 so as to maintain a normally closed form.
Referring to fig. 6, the driving assembly 3 includes a second gear 301, a servo motor 302, a ball screw 303, an electromagnetic brake 304, a resolver 305, and a first gear 306. The two ends of the ball screw 303 are fixed on the equalizer frame 2 (which may be on the first side plate 201) through bearing seats. A nut (not labeled) is provided on the ball screw 303, and the nut is connected to the block moving assembly 1, so that when the ball screw 303 rotates, the nut carries the block moving assembly 1 to move in the X direction. The first gear 306 is mounted on the left side of the ball screw 303 through a bolt, and the electromagnetic brake 304 and the rotary transformer 305 are fixedly mounted on the right side of the ball screw 303 through a jackscrew. The servo motor 302 is fixed on the equalizer frame 2 (may be on the first side plate 201) through a connecting plate, and the second gear 301 is fixedly sleeved on an output shaft of the servo motor 302 through a jackscrew.
The driving assembly 3 is driven by a servo motor 302 to rotate a second gear 301, the second gear 301 is meshed with a first gear 306 to drive a ball screw 303 to rotate, so that a driving nut moves along the X direction to drive the block equalizing moving assembly 1 to move along the X direction, a rotary transformer 305 (a brand: Morgan rotary transformer; model TS2620N21E11) is fixed at the tail end of the screw rod, the angular displacement and the angular velocity information of the screw rod rotation can be measured in real time, and the linear displacement and the velocity information of the block equalizing moving assembly 1 can be monitored in real time through conversion. Meanwhile, the tail end of the screw rod is also provided with an electromagnetic brake 304 (brand: a tris-captopril miniature brake; brand: 112-03-11), so that the screw rod cannot rotate under the condition of power failure.
Referring to fig. 1, in another embodiment of the present invention, the equalizer for a medical accelerator further comprises an ionization chamber 5 mounted inside the outer frame assembly 2 and located between the equalizer moving assembly 1 and the outer frame assembly 2.
The utility model discloses a make equal monoblock and electronic scatterer X to with Y to the structure that can both accurately adjust, can ensure that equal monoblock is located required accurate position, the switching of equal monoblock and electronic scatterer position simultaneously adopts lead screw drive's linear motion mode, and the motion precision is high, and equal monoblock and electronic scatterer are fixed in U-shaped frame mechanism, and structural rigidity is good. Meanwhile, the pin 402 can be ejected out when the leveling moving assembly 1 moves to the corresponding position, and is inserted into the corresponding pin sleeve 104 to keep a normally closed form, so that the leveling position can not be changed in the running process of the machine.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.
Claims (8)
1. A homogenizer for a medical accelerator, comprising:
an outer frame assembly (2);
the block equalizing moving assembly (1) is provided with an equalizing block (106) and can slide in the outer frame assembly (2) along the X direction;
the driving component (3) is fixedly arranged on the outer frame component (2) and is used for driving the integral moving component (1) to slide relative to the outer frame component (2);
the positioning components (4) are fixedly arranged at two end parts of the outer frame component (2), and the positioning components (4) have a working state and a non-working state:
when the positioning assembly (4) is in a working state, the position of the integral moving assembly (1) relative to the outer frame assembly (2) is fixed;
when the positioning assembly (4) is in a non-working state, the integral moving assembly (1) can slide relative to the outer frame assembly (2) under the driving of the driving assembly (3).
2. Homogenizer for medical accelerators according to claim 1, characterized in that the homogenizer movement assembly (1) comprises:
a moving frame (101);
a carrier sheet (105) disposed on the moving frame (101);
and the adjusting element is arranged on the moving frame (101) and is used for adjusting the position of the bearing sheet (105) in the Y direction relative to the moving frame (101).
3. The homogenizer for a medical accelerator according to claim 2, wherein:
the bearing sheet (105) is provided with holes;
the adjusting element is a fine adjusting bolt (103) which is arranged on the wall of the moving frame (101) and matched with the hole.
4. Homogenizer for medical accelerators according to claim 2, characterized in that the homogenizer movement assembly (1) comprises:
a homogenizing block (106) and an electronic wire scatterer (107) which are fixedly arranged on the bearing sheet (105) in sequence along the X direction;
a lead shield (108) fixedly disposed on the moving frame (101) and positioned over the monolith (106) and the electronic wire diffuser (107).
5. The homogenizer for a medical accelerator according to any one of claims 2 to 4, wherein:
the monolith moving assembly (1) comprises:
a guide rail slider (102) fixedly arranged on the outer side surface of the moving frame (101);
the outer frame assembly (2) includes:
a base plate (202);
a first side plate (201) and a second side plate (203) which are fixedly arranged on the bottom plate (202) at intervals and form a space for accommodating the uniform moving assembly (1);
a guide rail (204) arranged at least on the inner wall of one of the first side plate (201) and the second side plate (203);
the rail slider (102) and the rail (204) mate.
6. The homogenizer for a medical accelerator according to claim 5, wherein:
the monolith moving assembly (1) comprises:
pin sleeves (104) arranged at two ends of the moving frame (101);
the positioning assembly (4) comprises:
an electromagnet mounting plate (406) fixedly arranged at the bottom of the outer frame component (2);
the spring fixing plate (404) is fixedly arranged at the bottom of the outer frame component (2) or on the electromagnet mounting plate (406), and a first accommodating space is defined between the electromagnet mounting plate (406) and the spring fixing plate (404);
a push-pull electromagnet (405) fixedly arranged on the electromagnet mounting plate (406) and positioned in the first accommodating space;
a pin guide frame (401) fixedly disposed on the spring fixing plate (404), a second accommodation space being formed between the pin guide frame (401) and the spring fixing plate (404);
the pin (402) is movably arranged in the second accommodating space, the bottom end of the pin (402) is sleeved with a spring (403) and is associated with the output shaft of the push-pull electromagnet (405), and the top end of the pin (402) can extend outwards from the pin guide frame (401) and is matched with the pin sleeve (104).
7. Homogenizer for medical accelerators according to claim 1, characterized in that the drive assembly (3) comprises:
the ball screw (303) is fixed on the outer frame component (2) through a bearing seat;
the nut is arranged on the ball screw (303) and can move along the ball screw, and the nut is connected with the block moving assembly (1);
a first gear (306) fixedly arranged at one end part of the ball screw (303);
an electromagnetic brake (304) and a rotation converter (305) which are fixedly arranged at the other end of the ball screw (303) in sequence;
a servo motor (302) fixedly arranged on the outer frame component (2);
a second gear (301) provided on an output shaft of the servo motor (302);
the first gear (306) and the second gear (301) are meshed with each other.
8. The homogenizer for a medical accelerator according to claim 1, comprising:
and the ionization chamber (5) is arranged in the outer frame assembly (2) and is positioned between the uniform moving assembly (1) and the outer frame assembly (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920604858.7U CN210225863U (en) | 2019-04-29 | 2019-04-29 | Leveling device for medical accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920604858.7U CN210225863U (en) | 2019-04-29 | 2019-04-29 | Leveling device for medical accelerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210225863U true CN210225863U (en) | 2020-03-31 |
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ID=69924374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920604858.7U Active CN210225863U (en) | 2019-04-29 | 2019-04-29 | Leveling device for medical accelerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210225863U (en) |
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2019
- 2019-04-29 CN CN201920604858.7U patent/CN210225863U/en active Active
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