CN109959963B - Ionization chamber fixture - Google Patents
Ionization chamber fixture Download PDFInfo
- Publication number
- CN109959963B CN109959963B CN201910354798.2A CN201910354798A CN109959963B CN 109959963 B CN109959963 B CN 109959963B CN 201910354798 A CN201910354798 A CN 201910354798A CN 109959963 B CN109959963 B CN 109959963B
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- China
- Prior art keywords
- screw rod
- chuck
- guide screw
- clamp
- ionization chamber
- Prior art date
- 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.)
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- 150000001875 compounds Chemical class 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- -1 polyethylene Polymers 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 229920005372 Plexiglas® Polymers 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 2
- 230000005855 radiation Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 238000012795 verification Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003908 quality control method Methods 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/005—Details of radiation-measuring instruments calibration techniques
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
Abstract
The embodiment of the invention relates to an ionization chamber clamp, which comprises: the device comprises an electric rotating table, a stepping motor and a rotating table driven by the stepping motor; the support rod is supported between the rotary table and the manual clamp and is perpendicular to the plane where the rotary table is located; a manual clamp comprising: the device comprises a fixed slideway plate, a V-shaped chuck, a facing motion screw rod and a hand wheel; the opposite type moving screw rod comprises a first guide screw rod and a second guide screw rod, and the thread directions of the first guide screw rod and the second guide screw rod are opposite; the hand wheel is arranged at one end of the first guide screw rod; the V-shaped clamping head comprises a first clamping head and a second clamping head which are arranged on the fixed slideway plate, and the clamping ends of the first clamping head and the second clamping head are respectively provided with a V-shaped groove structure and are oppositely arranged; the fixed end of the first chuck is provided with a first sliding block which is sleeved on the first guide screw rod, and the fixed end of the second chuck is provided with a second sliding block which is sleeved on the second guide screw rod, so that the first chuck and the second chuck synchronously move in opposite directions along with the rotation of the screw rod to clamp and fix the ionization chamber.
Description
Technical Field
The invention relates to a fixture device, in particular to an ionization chamber fixture.
Background
Cavity ionization chambers and other types of radiation dose detectors are used for quantitative measurements of medical, protective, environmental level X-rays, gamma rays, etc., and generally require periodic magnitude traceability and quality control.
During periodic verification, calibration, the ionization chamber or other radiation dose detector needs to be fixed and positionally adjusted. It is therefore necessary to fix it with a special clamp.
Currently, the common clamp is operated on one side, so that when clamping ionization chamber rods with different sizes, the whole platform needs to be moved for repositioning every time, and the operation is complex.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a special fixture for an ionization chamber, which can realize convenient fixation and accurate positioning during the verification and calibration of the ionization chamber or other radiation dose detectors or the manufacturing research of the ionization chamber and other detectors.
To achieve the above object, the present invention provides an ionization chamber fixture comprising:
the electric rotating platform comprises a stepping motor and a rotating platform driven by the stepping motor; the rotary table is provided with a support rod bottom end fixing screw hole;
the bottom end of the supporting rod is connected with a supporting rod bottom end fixing screw hole on the rotating table through threads, and the axial direction of the supporting rod is perpendicular to the plane of the rotating table;
the manual clamp comprises a fixed slideway plate, a V-shaped chuck, a facing movement screw rod and a hand wheel;
the opposite type moving screw rod comprises a first guide screw rod and a second guide screw rod, one end of the first guide screw rod is connected with one end of the second guide screw rod at a connecting part, and the thread directions of the first guide screw rod and the second guide screw rod are opposite; the hand wheel is arranged at the other end of the first guide screw rod;
the bottom of the fixed slideway plate is provided with a supporting rod top fixing screw hole, and the position of the fixed slideway plate corresponds to the supporting rod bottom fixing screw hole on the rotary table; the top end of the supporting rod is connected with the top end fixing screw hole of the supporting rod through threads;
the V-shaped clamping head comprises a first clamping head and a second clamping head which are arranged on the fixed slideway plate, the clamping ends of the first clamping head and the second clamping head are respectively provided with a V-shaped groove structure, and the clamping ends of the first clamping head and the second clamping head are oppositely arranged; the fixed end of the first chuck is provided with a first sliding block which is sleeved on the first guide screw rod, and the fixed end of the second chuck is provided with a second sliding block which is sleeved on the second guide screw rod, so that the first chuck and the second chuck synchronously move in opposite directions along with the rotation of the opposite-direction moving screw rod to clamp and fix the ionization chamber.
Preferably, the hand wheel rotates to drive the first guide screw rod to rotate in a first direction and the second guide screw rod to rotate in a second direction, so that the first chuck and the second chuck are driven to generate synchronous opposite movement along the axial direction of the opposite type moving screw rod;
the hand wheel rotates to drive the first guide screw rod to rotate in a second direction and the second guide screw rod to rotate in a first direction, so that the first chuck and the second chuck are driven to generate synchronous back movement along the axial direction of the opposite type moving screw rod;
the first direction and the second direction are opposite rotational directions.
Preferably, the first sliding block and the second sliding block are symmetrically arranged at two sides of the connecting part.
Preferably, the rotary table comprises a fixing part and a rotating part, wherein a fixing mounting hole is formed in the rotary table, a fixing mounting bolt is used for penetrating through the fixing mounting hole and is fixed on the rotating part, and the rotary table is fixed on an external test platform.
Preferably, the fixed slideway plate is provided with a guide groove, and the axial direction of the guide groove is parallel to the axial direction of the opposite type moving screw rod; the bottom ends of the first chuck and the second chuck are sliding parts, and the sliding parts are arranged in the guide grooves in a sliding manner.
Preferably, the geometric central axis of the V-shaped chuck is concentric and coaxial with the central axis of the rotary table, and the axial direction of the supporting rod is perpendicular to the upper surface of the V-shaped chuck.
Preferably, the V-shaped chuck is made of a compound material consisting of low atomic number elements; the compound material is a material composed of an element having an atomic number smaller than an atomic number 13 of aluminum.
Further preferably, the compound material composed of the low atomic number element includes: polyethylene, plexiglas or polytetrafluoroethylene.
The ionization chamber clamp provided by the embodiment of the invention can effectively ensure simple, quick and accurate positioning in the verification, calibration and measurement experiments of an ionization chamber or other radiation dose detectors, and has the advantages of simple and convenient operation and strong practicability.
Drawings
Fig. 1 is a schematic perspective view of an ionization chamber fixture according to an embodiment of the present invention;
FIG. 2 is a front view of an ionization chamber clamp provided in an embodiment of the present invention;
fig. 3 is a schematic perspective view of a manual fixture according to an embodiment of the present invention;
FIG. 4 is a front view of a manual clamp provided by an embodiment of the present invention;
fig. 5 is a top view of a manual clamp according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Fig. 1 is a schematic perspective view of an ionization chamber fixture according to an embodiment of the present invention, and fig. 2 is a front view of the ionization chamber fixture according to the embodiment of the present invention. As shown in the drawings, the ionization chamber fixture of the embodiment of the present invention includes: a manual clamp 1, a support rod 2 and an electric rotating table 3;
the motorized rotary table 3 includes a stepping motor 31 and a rotary table 32 driven by the stepping motor 31.
Wherein, the rotary table 32 is provided with a support rod bottom end fixing screw hole. The rotary table 32 includes a fixed portion and a rotating portion, and the rotating portion is located above the fixed portion. The rotary table 32 is provided with a fixed mounting hole 321, and is used for fixing a mounting bolt to penetrate through the fixed mounting hole 321 and fixing the rotary table 32 on an external test platform through a fixed rotating part. The fixed mounting bolt in the mounting hole 321 extends into the lower part of the rotating part to be fixed with the fixed part, so that the rotation of the rotating part is not affected.
The number of the fixing holes 321 is four, and fewer or more fixing holes can be used for fixing in practical application. The rotary stage 32 may be rotated 360 deg. and the stepper motor controlled rotation for ionization chamber angular response measurements.
The bottom end of the supporting rod 2 is connected with a supporting rod bottom end fixing screw hole through threads, and the axial direction of the supporting rod 2 is perpendicular to the plane of the rotary table 32; the tip of the support bar 2 supports a manual clamp, the specific connection of which will be described later. In practical application, the support rods with different lengths can be selected according to the length requirement of the ionization chamber rod.
The manual clamp 1, as shown in figures 3-5, comprises a fixed slideway plate 11, a V-shaped chuck 12, a facing movement screw rod 13 and a hand wheel 14;
the opposite moving screw 13 includes a first guide screw 131 and a second guide screw 132, one end of the first guide screw 131 is connected to one end of the second guide screw 132 at a connection portion 133, and the thread directions of the first guide screw 131 and the second guide screw 132 are opposite.
The hand wheel 14 is arranged at the other end of the first guide screw 131.
The bottom of the fixed slideway plate 11 is provided with a supporting rod top fixing screw hole (not shown in the figure), and the position corresponds to the supporting rod bottom fixing screw hole on the rotary table 32; i.e. the number of holes, the setting angles and distances between holes are all in one-to-one correspondence. The top end of the supporting rod 2 is connected with a fixed screw hole at the top end of the supporting rod through threads.
The V-shaped clamping head 12 comprises a first clamping head 121 and a second clamping head 122 which are respectively arranged on the fixed slideway plate 11, the fixed slideway plate 11 is provided with a guide groove 111, and the axial direction of the guide groove 111 is parallel to the axial direction of the opposite type moving screw rod 13; the bottom ends of the first chuck 121 and the second chuck 122 are sliding parts, and are slidably arranged in the guide groove 111, so that the function of aligning the movement direction of the V-shaped chuck 12 is achieved.
The clamping ends of the first clamping head 121 and the second clamping head 122 are respectively provided with a V-shaped groove structure, and the clamping ends of the first clamping head 121 and the second clamping head 122 are oppositely arranged; the fixed end of the first chuck 121 is provided with a first slide block 1211, and is sleeved on the first guide screw 131, the fixed end of the second chuck 122 is provided with a second slide block 1221, and is sleeved on the second guide screw 132, so that the first chuck 121 and the second chuck 122 synchronously move towards each other along with the rotation of the opposite moving screw 13 to clamp and fix the ionization chamber. In a preferred embodiment, the first slider 1211 and the second slider 1221 are symmetrically disposed on both sides of the connection portion 133.
The geometric center axis of the V-shaped chuck 12 is concentric with the center axis of the rotary table 32, and the axial direction of the support rod 2 is perpendicular to the upper surface of the V-shaped chuck 1.
Further, the V-shaped chuck 13 of the present invention is composed of a compound composed of a low atomic number element; the low atomic number element is an element having an atomic number smaller than the atomic number 13 of aluminum. For example, compounds composed of low atomic number elements include: polyethylene, plexiglass or polytetrafluoroethylene, etc. can effectively reduce radiation scattering.
When the ionization chamber clamp is used for clamping the ionization chamber rod to fix the ionization chamber, the rotary hand wheel 14 drives the first guide screw rod 131 to rotate in a first direction and the second guide screw rod 132 to rotate in a second direction, so that the first clamping head 121 and the second clamping head 122 are driven to synchronously move in opposite directions along the axial direction of the opposite type moving screw rod 13, and the ionization chamber rod is clamped;
when the ionization chamber rod clamped by the ionization chamber clamp is released, the rotary hand wheel 14 drives the first guide screw 131 to rotate in the second direction and the second guide screw 132 to rotate in the first direction, so that the first chuck 121 and the second chuck 122 are driven to synchronously move back along the axial direction of the opposite moving screw, and the ionization chamber rod is released; the first and second directions are referred to herein as opposite rotational directions.
The ionization chamber clamp has the functions of concentrically and coaxially clamping the ionization chamber rod vertically, simultaneously can perform ionization chamber angle response measurement, provides a convenient and simple ionization chamber clamping tool for verification, calibration and ionization chamber experiments, avoids the tedious adjustment of a large moving workbench by a small distance, ensures the measurement precision and accuracy, and has simple and convenient operation and strong practicability.
The ionization chamber clamp of the embodiment of the invention can be also used for verification and calibration of other radiation dose detectors or convenient and accurate positioning during detector manufacturing research.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. An ionization chamber clamp, the ionization chamber clamp comprising:
the electric rotating platform comprises a stepping motor and a rotating platform driven by the stepping motor; the rotary table is provided with a support rod bottom end fixing screw hole;
the bottom end of the supporting rod is connected with a supporting rod bottom end fixing screw hole on the rotating table through threads, and the axial direction of the supporting rod is perpendicular to the plane of the rotating table;
the manual clamp comprises a fixed slideway plate, a V-shaped chuck, a facing movement screw rod and a hand wheel;
the opposite type moving screw rod comprises a first guide screw rod and a second guide screw rod, one end of the first guide screw rod is connected with one end of the second guide screw rod at a connecting part, and the thread directions of the first guide screw rod and the second guide screw rod are opposite; the hand wheel is arranged at the other end of the first guide screw rod;
the bottom of the fixed slideway plate is provided with a supporting rod top fixing screw hole, and the position of the fixed slideway plate corresponds to the supporting rod bottom fixing screw hole on the rotary table; the top end of the supporting rod is connected with the top end fixing screw hole of the supporting rod through threads;
the V-shaped clamping head comprises a first clamping head and a second clamping head which are arranged on the fixed slideway plate, the clamping ends of the first clamping head and the second clamping head are respectively provided with a V-shaped groove structure, and the clamping ends of the first clamping head and the second clamping head are oppositely arranged; the fixed end of the first chuck is provided with a first sliding block which is sleeved on the first guide screw rod, and the fixed end of the second chuck is provided with a second sliding block which is sleeved on the second guide screw rod, so that the first chuck and the second chuck synchronously move in opposite directions along with the rotation of the opposite-direction moving screw rod to clamp and fix the ionization chamber;
the first sliding block and the second sliding block are symmetrically arranged on two sides of the connecting part;
the rotary table comprises a fixing part and a rotating part, wherein a fixed mounting hole is formed in the rotary table and used for enabling a fixed mounting bolt to penetrate through the fixed mounting hole and be fixed on the rotating part, and the rotary table is fixed on an external test platform.
2. The ionization chamber clamp of claim 1, wherein rotation of the hand wheel drives a first guide screw to rotate in a first direction and a second guide screw to rotate in a second direction, thereby driving the first and second chucks to produce synchronous opposite movement along the axial direction of the opposite-type moving screw;
the hand wheel can rotate to drive the first guide screw rod to rotate in a second direction and can also drive the second guide screw rod to rotate in a first direction, so that the first chuck and the second chuck are driven to generate synchronous back movement along the axial direction of the opposite type moving screw rod;
the first direction and the second direction are opposite rotational directions.
3. The ionization chamber clamp of claim 1, wherein the fixed chute plate has a guide slot with an axial direction parallel to an axial direction of the opposing moving screw; the bottom ends of the first chuck and the second chuck are sliding parts, and the sliding parts are arranged in the guide grooves in a sliding manner.
4. The ionization chamber clamp of claim 1, wherein the geometric center axis of the V-clamp is concentric with the center axis of the rotary table, and the axial direction of the support rod is perpendicular to the upper surface of the V-clamp.
5. The ionization chamber clamp of claim 1, wherein said V-clamp is constructed of a compound material composed of low atomic number elements; the compound material is a material composed of an element having an atomic number smaller than an atomic number 13 of aluminum.
6. The ionization chamber clamp of claim 5, wherein said compound material of low atomic number element composition comprises: polyethylene, plexiglas or polytetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910354798.2A CN109959963B (en) | 2019-04-29 | 2019-04-29 | Ionization chamber fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910354798.2A CN109959963B (en) | 2019-04-29 | 2019-04-29 | Ionization chamber fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109959963A CN109959963A (en) | 2019-07-02 |
| CN109959963B true CN109959963B (en) | 2024-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910354798.2A Active CN109959963B (en) | 2019-04-29 | 2019-04-29 | Ionization chamber fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109959963B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118169734B (en) * | 2024-02-02 | 2025-01-28 | 中国计量科学研究院 | A rotating platform for ionizing radiation testing |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4768765A (en) * | 1985-06-28 | 1988-09-06 | Yokogawa Medical Systems, Limited | Jig for arranging electrode plates of an ionization chamber type x-ray detector |
| KR100912279B1 (en) * | 2009-04-07 | 2009-08-17 | 일진방사선 엔지니어링 (주) | Ion chamber calibration holder |
| CN104091748A (en) * | 2014-07-09 | 2014-10-08 | 中国计量科学研究院 | Ionization chamber adjusting device |
| WO2016180382A1 (en) * | 2015-05-12 | 2016-11-17 | Advacam S.R.O. | Ionizing radiation detector module |
| CN106548919A (en) * | 2016-10-28 | 2017-03-29 | 中国计量科学研究院 | Ionization chamber detecting system |
| CN206096477U (en) * | 2016-10-28 | 2017-04-12 | 中国计量科学研究院 | Ionization chamber detecting system |
| CN106730413A (en) * | 2016-12-23 | 2017-05-31 | 江苏海明医疗器械有限公司 | A kind of medical accelerator ionisation chamber precision positioning device |
-
2019
- 2019-04-29 CN CN201910354798.2A patent/CN109959963B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4768765A (en) * | 1985-06-28 | 1988-09-06 | Yokogawa Medical Systems, Limited | Jig for arranging electrode plates of an ionization chamber type x-ray detector |
| KR100912279B1 (en) * | 2009-04-07 | 2009-08-17 | 일진방사선 엔지니어링 (주) | Ion chamber calibration holder |
| CN104091748A (en) * | 2014-07-09 | 2014-10-08 | 中国计量科学研究院 | Ionization chamber adjusting device |
| WO2016180382A1 (en) * | 2015-05-12 | 2016-11-17 | Advacam S.R.O. | Ionizing radiation detector module |
| CN106548919A (en) * | 2016-10-28 | 2017-03-29 | 中国计量科学研究院 | Ionization chamber detecting system |
| CN206096477U (en) * | 2016-10-28 | 2017-04-12 | 中国计量科学研究院 | Ionization chamber detecting system |
| CN106730413A (en) * | 2016-12-23 | 2017-05-31 | 江苏海明医疗器械有限公司 | A kind of medical accelerator ionisation chamber precision positioning device |
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| Publication number | Publication date |
|---|---|
| CN109959963A (en) | 2019-07-02 |
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