CN108453651B - PET detector shaft positioning tool - Google Patents
PET detector shaft positioning tool Download PDFInfo
- Publication number
- CN108453651B CN108453651B CN201810507342.0A CN201810507342A CN108453651B CN 108453651 B CN108453651 B CN 108453651B CN 201810507342 A CN201810507342 A CN 201810507342A CN 108453651 B CN108453651 B CN 108453651B
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- base
- mounting block
- block
- pet detector
- shaft positioning
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- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract description 41
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 41
- -1 polyethylene terephthalate Polymers 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 21
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000014392 establishment of spindle localization Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/037—Emission tomography
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Pathology (AREA)
- Heart & Thoracic Surgery (AREA)
- High Energy & Nuclear Physics (AREA)
- Physics & Mathematics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Radiology & Medical Imaging (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measurement Of Radiation (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a PET (polyethylene terephthalate) detector shaft positioning tool which comprises a base and a group of auxiliary mounting blocks respectively fixed on the side face of a PET detector, wherein the mounting blocks are arranged on the base, a first mounting block and a second mounting block are respectively arranged at two ends of the auxiliary mounting blocks, the bottom surfaces of the first mounting block, the second mounting block and the auxiliary mounting block are positioned on the same plane, the height difference of the first mounting block and the second mounting block is equal to the plane distance difference of two components of the detector, one end of the base is provided with a horizontal pressing component, the other end of the base is provided with a horizontal limiting block, a plurality of vertical pressing components are arranged on the base, and a main shaft positioning mechanism and a main shaft positioning block matched with the main shaft positioning mechanism are arranged on the base.
Description
Technical Field
The invention relates to the field of medical imaging equipment, in particular to a PET (polyethylene terephthalate) detector shaft positioning tool.
Background
In the PET detection ring provided with a plurality of PET detectors, the gap between two adjacent detectors is about 1mm, so that the PET detector modules are required to be assembled, the horizontal spacing between a main positioning shaft and an auxiliary positioning hole is required to be ensured, interference between two adjacent detector modules is avoided when the PET detector modules are mounted on the PET detector mounting ring, in the prior art, a positioning structure is arranged between parts forming the PET detector, the horizontal spacing between the main positioning shaft and the auxiliary positioning hole is ensured through mutual positioning among the parts, in this way, the processing precision requirement on the parts is high, and the controlled dimension is easy to be out of tolerance due to tolerance accumulation, and because the tail end of the main positioning shaft and the perforated surface of the auxiliary positioning hole are not on the same plane, and an included angle exists between the central connecting line of the main positioning shaft and the central connecting line of the auxiliary positioning hole and the symmetrical central line of the PET detector modules, the traditional shaft positioning structure cannot directly position the main positioning shaft and the auxiliary positioning hole.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a PET detector shaft positioning tool with accurate positioning.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a PET detector axle location frock, includes that base and a set of auxiliary installation piece that is fixed in PET detector side respectively, the installation piece is located on the base, the both ends of auxiliary installation piece are equipped with first installation piece and second installation piece respectively, the bottom surface of first installation piece, second installation piece and auxiliary installation piece is located the coplanar, the difference in height of first installation piece and second installation piece equals the plane distance difference of two subassemblies of detector, one end on the base is equipped with the horizontal hold-down subassembly, and the other end is equipped with the horizontal stopper, be equipped with a plurality of perpendicular hold-down subassemblies on the base, be equipped with main shaft positioning mechanism and with main shaft positioning mechanism complex main shaft locating piece on the base.
Further main shaft positioning mechanism is including being fixed in two guide positioning seats on the base, is equipped with the guiding axle on two guide positioning seats, is equipped with the pressure board between two guiding axles, be equipped with reset element on the guiding axle, be equipped with the application of force fixing base on the base, be equipped with on the application of force fixing base with pressure board complex perpendicular application of force subassembly.
The pressure plate is further inclined towards one side of the main shaft positioning block, and a side limit block is arranged on the other side of the base, which is correspondingly provided with the guide positioning seat.
Further, the horizontal compression assembly and the vertical compression assembly are elbow clamps with a self-locking function.
Further, the first mounting block and the second mounting block are provided with flanges matched with the vertical compression assembly.
The vertical compression assembly is further provided with a force application rod with an adjustable length.
In summary, the horizontal distance between the main positioning shaft and the auxiliary positioning hole of the control PET detector module is converted into the height difference between the auxiliary mounting block and the main positioning shaft positioning block on the control tool by using the tool, so that the influence of the positioning accumulated error between the parts of the PET detector module on the horizontal distance is eliminated, and the precision of the horizontal distance between the main positioning shaft and the auxiliary positioning hole is improved.
Drawings
FIG. 1 is a schematic diagram of the present invention;
FIG. 2 is a position diagram of the difference in the PET detector Δ1;
FIG. 3 is an assembly view of a PET detector and auxiliary mounting block;
FIG. 4 is a schematic view of the structure of the auxiliary mounting block;
FIG. 5 is a schematic view of the structure at the base;
FIG. 6 is a schematic structural view of a spindle positioning mechanism;
FIG. 7 is an exploded view of a PET detector and auxiliary mounting block;
FIG. 8 is a front view of the PET detector mounted to a base;
FIG. 9 is a rear view of the PET detector and base;
fig. 10 is a sectional view of the PET detector and base assembly.
Labeling and describing: 1. a PET detector; 11. a main positioning shaft; 12. auxiliary positioning holes; 2. a main shaft positioning block; 3. an auxiliary mounting block; 31. a first mounting block; 32. a second mounting block; 5. a base; 51. a side limit block; 52. a horizontal limiting block; 53. a horizontal compression assembly; 54. a vertical compression assembly; 6. a spindle positioning mechanism; 61. a guide positioning seat; 62. a guide shaft; 63. a spring; 64. a pressure plate; 65. a force application fixing seat; 66. and the vertical force application assembly.
Detailed Description
An embodiment of a PET detector shaft positioning tool according to the present invention will be further described with reference to fig. 1 to 10.
The utility model provides a PET detector 1 axle location frock, includes base 5 and a set of auxiliary installation piece 3 that are fixed in PET detector 1 bottom both sides respectively, the installation piece is located on the base 5, the both ends of auxiliary installation piece 3 are equipped with first installation piece 31 and second installation piece 32 respectively, the bottom surface that first installation piece 31, second installation piece 32 and auxiliary installation piece 3 are located the coplanar, the difference in height of first installation piece 31 and second installation piece 32 equals the plane distance difference of two subassemblies of detector, one end on the base 5 is equipped with horizontal hold-down subassembly 53, and the other end is equipped with horizontal stopper 52, be equipped with a plurality of vertical hold-down subassemblies 54 on the base 5, be equipped with main shaft positioning mechanism 6 and main shaft positioning block 2 with main shaft positioning mechanism 6 complex on the base 5, main shaft positioning mechanism 6 is equipped with pressure plate 64 including being fixed in two guide positioning seat 61 on the base 5 on two guide positioning seat 61, be equipped with between two guide shaft 62, be equipped with reset element on the guide shaft 62, be equipped with force application plate 65 on the base 5, be equipped with the pressure plate 65 on the other side orientation has the corresponding side of pressure plate 64, the side hold-down subassembly is equipped with vertical hold-down subassembly 53, and is equipped with the pressure plate 64 on the base 5.
As shown in fig. 1 to 3, when two components of the PET detector 1 are assembled, since the two components are not equally wide and there is a difference of Δ1 on one side, the auxiliary mounting block 3 is required to be used to ensure that the two components are in contact with the same mounting reference surface during assembly, the first mounting block 31 and the second mounting block 32 are respectively in contact with the two components, and assuming that the height of the first mounting block 31 is h1 and the height of the second mounting block 32 is h2, the difference of the heights between h1 and h2 is equal to Δ1, the horizontal distance d1 between the main positioning shaft 11 and the auxiliary positioning hole 12 of the PET detector 1 is equal to Δ1, and the value of the horizontal distance d1 between the main positioning shaft 11 and the auxiliary positioning hole 12 is equal to d1 by the formula d1=h3-h1-d2+1/2, wherein the middle 2 is the diameter of the main positioning shaft 11, so that the accuracy of the horizontal distance d1 between the main positioning shaft 11 and the auxiliary positioning hole 12 can be ensured only by additionally controlling the processing accuracy of the dimensions h3 and h 1.
In the present embodiment, four sets of vertical pressing assemblies 54 are respectively disposed on two sides of the base 5, when in use, firstly, in the process of assembling the module assemblies of the PET detector 1, the first mounting block 31 and the second mounting block 32 are used to ensure the relative positional relationship between the two modules of the detector, secondly, the main positioning shaft 11 assembly of the detector is placed on the top of the module of the PET detector 1, screws are screwed in, but not fastened, the main positioning shaft 11 assembly can move along the top surface of the module of the PET detector 1 within a certain range, the module of the PET detector 1 with the installation completed is placed on the base 5 again, the lower surface of the auxiliary mounting block 3 is contacted with the base 5, the side end surface of the module of the PET detector 1 is contacted with the horizontal limiting block 52, the bottom end surface of the module of the PET detector 1 is contacted with the side limiting block 51, the circumferential surface of the main positioning shaft 11 assembly is contacted with the upper surfaces of the two main positioning blocks 2, then pushing the handles of the horizontal pressing assembly 53 and the four sets of vertical pressing assemblies 54 to enable the horizontal pressing assembly 53 to clamp the side end surfaces of the PET detector 1 module, and enabling the four sets of vertical pressing assemblies 54 to clamp the flanges on the first mounting block 31 and the second mounting block 32 respectively, so as to limit the freedom degree of the PET detector 1 module in the vertical direction and the horizontal direction, then pushing the vertical force application assembly 66 to enable the pressure plate 64 to move downwards and enable the inclined surface of the pressure plate 64 to be in contact with the circumferential surface of the main positioning shaft 11 assembly and press the circumferential surface, when the pressure plate 64 presses the main positioning shaft 11 assembly, positive pressure along the normal direction of the inclined surface of the pressure plate 64 can be generated on the main positioning shaft 11 assembly, the positive pressure can be decomposed into a horizontal component force and a vertical component force, the horizontal component presses the main positioning shaft 11 assembly together with the PET detector 1 module to the side limiting block 51, so that the freedom degree of the main positioning shaft 11 assembly in the horizontal direction is limited, the vertical component force compresses the main positioning shaft 11 assembly on the upper surfaces of the two main shaft positioning blocks 2, the distance between the main positioning shaft 11 assembly and the base 5 is ensured, finally, screws which are not fastened previously are fastened, the assembly of the main positioning shaft 11 assembly is completed, the horizontal distance between the main positioning shaft 11 and the auxiliary positioning hole 12 of the module of the PET detector 1 is converted into the height difference between the auxiliary mounting block 3 and the main positioning shaft 11 positioning block on the control tool by using the tool, the influence of the positioning accumulated error between the module parts of the PET detector 1 on the horizontal distance is eliminated, and the precision of the horizontal distance between the main positioning shaft 11 and the auxiliary positioning hole 12 is improved.
The return element in this embodiment may be a compression spring 63 for returning the pressure plate 64.
The guide shaft 62 in this embodiment is used to guide the pressure plate 64 so that it can only move vertically.
The first mounting block 31 and the second mounting block 32 of the preferred embodiment are each provided with a flange cooperating with the vertical compression assembly 54, defining the freedom of the auxiliary mounting block 3 in the vertical direction.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (3)
1. PET detector axle location frock, characterized by: the PET detector comprises a base and a group of auxiliary mounting blocks which are respectively fixed on the side face of the PET detector, wherein the mounting blocks are arranged on the base, the two ends of each auxiliary mounting block are respectively provided with a first mounting block and a second mounting block, the bottom surfaces of the first mounting block, the second mounting block and the auxiliary mounting block are positioned on the same plane, the height difference of the first mounting block and the second mounting block is equal to the plane distance difference of the two components of the detector, one end of the base is provided with a horizontal compression component, the other end of the base is provided with a horizontal limiting block, the base is provided with a plurality of vertical compression components, and the base is provided with a main shaft positioning mechanism and a main shaft positioning block matched with the main shaft positioning mechanism;
the horizontal compression assembly and the vertical compression assembly are elbow clamps with a self-locking function;
the vertical compression assembly is provided with a force application rod with adjustable length;
The main shaft positioning mechanism comprises two guide positioning seats fixed on a base, guide shafts are arranged on the two guide positioning seats, a pressure plate is arranged between the two guide shafts, a reset element is arranged on the guide shafts, a force application fixing seat is arranged on the base, and a vertical force application component matched with the pressure plate is arranged on the force application fixing seat.
2. The PET detector shaft positioning tool of claim 1, wherein: the pressure plate is inclined towards one surface of the main shaft positioning block, and a side limit block is arranged on the other side of the base, which is correspondingly provided with the guide positioning seat.
3. The PET detector shaft positioning tool of claim 1, wherein: the first mounting block and the second mounting block are both provided with flanges matched with the vertical compression assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810507342.0A CN108453651B (en) | 2018-05-24 | 2018-05-24 | PET detector shaft positioning tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810507342.0A CN108453651B (en) | 2018-05-24 | 2018-05-24 | PET detector shaft positioning tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108453651A CN108453651A (en) | 2018-08-28 |
| CN108453651B true CN108453651B (en) | 2024-05-07 |
Family
ID=63215550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810507342.0A Active CN108453651B (en) | 2018-05-24 | 2018-05-24 | PET detector shaft positioning tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108453651B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305580A (en) * | 2020-10-23 | 2021-02-02 | 南昌华亮光电有限责任公司 | PET detector system with self-locking structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003087436A1 (en) * | 2002-04-08 | 2003-10-23 | Acm Research, Inc. | Electropolishing and/or electroplating apparatus and methods |
| JP2006326319A (en) * | 2005-05-27 | 2006-12-07 | Siemens Medical Solutions Usa Inc | X-ray imaging system |
| CN102717354A (en) * | 2012-06-29 | 2012-10-10 | 天津汽车模具股份有限公司 | Quick positioning mechanism |
| CN204600511U (en) * | 2015-05-07 | 2015-09-02 | 武汉数字派特科技有限公司 | A kind of pet detector module installation structure and detector rings |
| CN105170862A (en) * | 2015-08-28 | 2015-12-23 | 芜湖莫森泰克汽车科技有限公司 | Skylight outer pipe pressing block riveting fixture |
| CN206787421U (en) * | 2017-04-26 | 2017-12-22 | 金永和精工制造股份有限公司 | A kind of auto parts machinery pilot hole detecting tool |
| CN207351659U (en) * | 2017-08-25 | 2018-05-11 | 江苏金海创科技有限公司 | Eyeglass detects and calibration tool |
| CN208342665U (en) * | 2018-05-24 | 2019-01-08 | 明峰医疗系统股份有限公司 | A kind of pet detector axis positioning tool |
-
2018
- 2018-05-24 CN CN201810507342.0A patent/CN108453651B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003087436A1 (en) * | 2002-04-08 | 2003-10-23 | Acm Research, Inc. | Electropolishing and/or electroplating apparatus and methods |
| JP2006326319A (en) * | 2005-05-27 | 2006-12-07 | Siemens Medical Solutions Usa Inc | X-ray imaging system |
| CN102717354A (en) * | 2012-06-29 | 2012-10-10 | 天津汽车模具股份有限公司 | Quick positioning mechanism |
| CN204600511U (en) * | 2015-05-07 | 2015-09-02 | 武汉数字派特科技有限公司 | A kind of pet detector module installation structure and detector rings |
| CN105170862A (en) * | 2015-08-28 | 2015-12-23 | 芜湖莫森泰克汽车科技有限公司 | Skylight outer pipe pressing block riveting fixture |
| CN206787421U (en) * | 2017-04-26 | 2017-12-22 | 金永和精工制造股份有限公司 | A kind of auto parts machinery pilot hole detecting tool |
| CN207351659U (en) * | 2017-08-25 | 2018-05-11 | 江苏金海创科技有限公司 | Eyeglass detects and calibration tool |
| CN208342665U (en) * | 2018-05-24 | 2019-01-08 | 明峰医疗系统股份有限公司 | A kind of pet detector axis positioning tool |
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| Publication number | Publication date |
|---|---|
| CN108453651A (en) | 2018-08-28 |
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Jin Jiancheng Inventor after: Ma Xingjiang Inventor after: Wang Qiang Inventor before: Ouyang Zhiyi Inventor before: Ma Xingjiang Inventor before: Wang Qiang |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |