CN110815130A - High-torque sucker for packaging high-temperature radioactive source - Google Patents
High-torque sucker for packaging high-temperature radioactive source Download PDFInfo
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- CN110815130A CN110815130A CN201911093517.9A CN201911093517A CN110815130A CN 110815130 A CN110815130 A CN 110815130A CN 201911093517 A CN201911093517 A CN 201911093517A CN 110815130 A CN110815130 A CN 110815130A
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- sucker
- torque
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- flange bearing
- packaging
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- 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
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
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Abstract
The invention relates to a high-torque sucker for packaging a high-temperature radioactive source, which comprises a flange bearing, a vacuum sucker structure and a torque transmission structure, wherein the flange bearing is arranged on the flange bearing; the vacuum sucker structure comprises a vacuumizing structure and a silica gel sucker arranged at one end of the flange bearing; the silica gel sucker can be adsorbed on the surface of an adsorbed object to form a vacuum cavity; the vacuumizing structure is connected with the vacuum cavity; the torque transmission structure extends into the vacuum cavity to act on the adsorbate to transmit torque to the adsorbate. The invention has the following beneficial effects: the invention adopts a torque transmission structure to provide the torque required by the threaded connection of the radioactive source packaging cylinder body and the end cover, thereby realizing the packaging of the high-temperature radioactive source. Through buffer spring's buffering, can make the barrel realize being connected according to the accurate and end cover realization of set speed, guarantee end cover surface and barrel surface parallel and level to guarantee that the radioactive source size after the encapsulation satisfies the requirement.
Description
Technical Field
The invention belongs to the field of nuclear industry, and particularly relates to a high-torque sucker for packaging a high-temperature radioactive source.
Background
The high temperature radioactive source is finally encapsulated in a carbon cylindrical shell, and the radiation dose rate of the radioactive source is very high, so that the whole process is mechanical operation in order to reduce the dose received by operators, wherein the last step is screwing the threaded end cover into the carbon cylinder body, as shown in figure 1.
The threaded end cap is sucked by a vacuum chuck and is pre-positioned to be coaxial with the barrel. During packaging, the cylinder body is fixed on the rotary table and rotates in the direction of an arrow in the figure, and the end cover does not rotate. The end cover is sucked by a sucking disc and moves downwards along the axis at a certain speed, so that the high-temperature radioactive source cylinder is in threaded connection with the end cover. Because the encapsulated radioactive source is subjected to mechanical environments such as transportation environment and severe vibration impact in space launching environment, the end cover cannot be loosened in the process, otherwise serious consequences such as radioactive source falling off can be caused. Therefore, in order to prevent the threads from loosening, the threads of the end cover need to be coated with high-temperature liquid inorganic glue before the barrel and the end cover are connected, and the high-temperature liquid inorganic glue is solidified after the connection. However, since the inorganic glue occupies a certain space in the thread groove, the resistance is large in the process that the cylinder body rotates to enter the end cover, and the cylinder body can rotate only by a large torque. The radioactive source has strict installation precision requirements, and the bottom surface of the end cover is required to be in contact with the countersunk surface of the barrel countersunk hole, so that the axial size requirement of the radioactive source is ensured. Because the friction force between the sucker and the surface of the end cover is very small in the traditional structure, the moment required by the cylinder rotating into the end cover is not enough.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a high-torque sucker for packaging a high-temperature radioactive source, which provides the torque required for ensuring that the sucker sucks an end cover and simultaneously ensures the threaded connection between the end cover and a radioactive source cladding cylinder body.
The technical scheme of the invention is as follows:
a high-torque sucker for packaging a high-temperature radioactive source comprises a flange bearing, a vacuum sucker structure and a torque transmission structure; the vacuum sucker structure comprises a vacuumizing structure and a silica gel sucker arranged at one end of the flange bearing; the silica gel sucker can be adsorbed on the surface of an adsorbed object to form a vacuum cavity; the vacuumizing structure is connected with the vacuum cavity; the torque transmission structure extends into the vacuum cavity to act on the adsorbate to transmit torque to the adsorbate.
Furthermore, the large-torque sucker for packaging the radioactive source comprises a pin disk and a fixed shaft, wherein the torque transmission structure comprises the pin disk and the fixed shaft; at least two pins are arranged on the pin disc; the pin is matched with a positioning hole arranged on the surface of the adsorbed object; the silica gel sucker and the pin plate are both connected with the fixed shaft, and the pin plate is positioned in the vacuum cavity; the fixed shaft penetrates through the flange bearing and does not rotate relative to the flange bearing.
Furthermore, the pin plate is fixed on the fixed shaft through a hollow compression screw by the large-torque sucker for packaging the radioactive source; the fixed shaft is a hollow spline shaft; and the hollow cavity of the hollow compression screw is communicated with the hollow cavity of the hollow spline shaft to form the vacuumizing structure.
Further, foretell radiation source encapsulation is with big moment of torsion sucking disc, cavity integral key shaft one end is used for the installation the silica gel sucking disc with the pin dish, the other end installation locking end cover.
Furthermore, the high-torque sucker for packaging the radioactive source further comprises an upper hollow screw, and the upper hollow screw penetrates through the stopping end cover; and the hollow cavity of the upper hollow screw is connected with the hollow cavity of the hollow spline shaft.
Furthermore, according to the large-torque sucker for packaging the radioactive source, buffer springs are arranged between the stop end cover and the flange bearing and between the silica gel sucker and the flange bearing.
Furthermore, the buffer spring is sleeved on the hollow spline shaft.
The invention has the following beneficial effects:
1. the invention adopts a torque transmission structure to provide the torque required by the threaded connection of the radioactive source packaging cylinder body and the end cover, thereby realizing the packaging of the high-temperature radioactive source.
2. Through buffer spring's buffering, can make the barrel realize being connected according to the accurate and end cover realization of set speed, guarantee end cover surface and barrel surface parallel and level to guarantee that the radioactive source size after the encapsulation satisfies the requirement.
Drawings
FIG. 1 is a schematic diagram of a high temperature radioactive source package.
FIG. 2 is a schematic structural diagram of the high-torque chuck for encapsulating a high-temperature radioactive source according to the present invention.
FIG. 3 is a schematic diagram of the application state of the high-torque chuck for packaging high-temperature radioactive source of the present invention.
In the above drawings, 1, a hollow compression screw; 2. a pin plate; 3. a silica gel sucker; 4. a buffer spring; 5. a hollow spline shaft; 6. a spline flange bearing; 7. fixing screws; 8. a buffer spring; 9. a stop end cap; 10. fixing screws; 11. an upper hollow screw.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in FIG. 2, the invention provides a large torque chuck for packaging a high-temperature radioactive source, which comprises a flange bearing, a vacuum chuck structure and a torque transmission structure; the vacuum sucker structure comprises a vacuumizing structure and a silica gel sucker 3 arranged at one end of the flange bearing; the silica gel sucker 3 can be adsorbed on the surface (namely an end cover) of an adsorbed object to form a vacuum cavity; the vacuumizing structure is connected with the vacuum cavity; the torque transmission structure extends into the vacuum cavity to act on the adsorbate to transmit torque to the adsorbate.
The torque transmission structure comprises a pin plate 2 and a fixed shaft; at least two pins (2 in the embodiment) are arranged on the pin disc 2; the pin is matched with a positioning hole arranged on the surface of the adsorbate (see figure 3 in particular); the silica gel sucker 3 and the pin plate 2 are both connected with the fixed shaft, and the pin plate 2 is positioned in the vacuum cavity; the fixed shaft penetrates through the flange bearing and does not rotate relative to the flange bearing.
In this embodiment, the pin disc 2 is integrally made of high-strength alloy steel, the two pins and the disc are respectively inserted into the two positioning holes in the surface of the end cover, and the disc surface on one side of the pins is in contact with the surface of the end cover, so that the surface of the end cover is parallel to the upper surface of the cylinder body, and the axis of the end cover is prevented from deviating from the axis of the cylinder body. The pin can provide the torque required for the threaded connection of the pin. The dish compresses tightly through the cavity screw and installs on the terminal surface under the integral key shaft, and 3 interior holes of silica gel sucking disc cup joint on the face of round pin nail dish 2 outer cylinders, and 3 interior hole face of cylinder diameters of silica gel sucking disc are less than the face of round pin nail dish 2 outer cylinders, therefore two contact surfaces compress tightly by the radial pressure on 3 interior hole face of cylinder of silica gel sucking disc and realize sealedly.
The pin plate 2 is fixed on the fixed shaft through a hollow compression screw 1; the fixed shaft is a hollow spline shaft 5; correspondingly, the flange bearing is a splined flange bearing 6. The hollow cavity of the hollow compression screw 1 is communicated with the hollow cavity of the hollow spline shaft 5 to form the vacuumizing structure. The hollow spline shaft 5 is internally provided with a vent hole (namely a hollow cavity) penetrating through the axis, the spline flange bearing 6 is fixed on a lifting platform (not shown in the figure) through a fixing screw 7, the spline shaft is sleeved in the spline flange bearing 6, and the gap between the spline shaft and the spline flange bearing in the radial direction is zero, so that the spline shaft cannot rotate, and great torque can be provided. Thereby ensuring the centering of the suction cup structure and providing a larger moment. The spline and spline flange bearing 6 can slide freely in the axial direction, and a certain buffer can be provided by matching with buffer springs (4, 8).
In this embodiment, the hollow spline shaft 5 passes through the flange bearing, one end of the hollow spline shaft is used for installing the silica gel sucker 3 and the pin plate 2, and the other end of the hollow spline shaft is provided with a stop end cover 9. The stop end cover 9 is fixed on the upper end surface of the hollow spline shaft 5 by a fixing screw 10. The stop end cover 9 can limit the stroke of the hollow spline shaft 5 and avoid overlarge axial movement amplitude of the hollow spline shaft 5.
The high-torque sucker for packaging the high-temperature radioactive source further comprises an upper hollow screw 11, wherein the upper hollow screw 11 penetrates through the stopping end cover 9; the hollow cavity of the upper hollow screw 11 is connected with the hollow cavity of the hollow spline shaft 5. So, the cavity of upper portion cavity screw 11, cavity integral key shaft 5 and the 1 three of cavity compression screw connects gradually into the evacuation passageway, draws the gas in the vacuum chamber of silica gel sucking disc 3 through the evacuation pipeline after silica gel sucking disc 3 and adsorbate (end cover) surface contact, makes it form vacuum state to guarantee the adsorption affinity of silica gel sucking disc 3.
In addition, due to the limitation of machining precision and the like, the thread pitch of the barrel thread of the radioactive source cladding and the thread pitch of the end cover are not completely consistent, so that the descending speed of the end cover needs to have a certain variable range, and the sucker structure is required to provide a certain axial buffering effect. And traditional sucker structure axial is rigid structure, can not provide the cushioning effect, can only rely on 3 elastic deformation of silica gel sucking disc to realize limited buffering, but because silica gel deformation is inhomogeneous, the centering nature of consequently sucking disc is relatively poor, probably leads to end cover and high temperature radiation source cladding barrel disalignment. In this embodiment, the stop end cap 9 also acts against the buffer spring 8.
Therefore, buffer springs (4, 8) are arranged between the stop end cover 9 and the flange bearing and between the silica gel sucker 3 and the flange bearing. The buffer springs (4, 8) are sleeved on the hollow spline shaft 5. The problem of uneven deformation of the silica gel is solved through the buffer springs (4 and 8), and centering of the end cover is guaranteed.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims (7)
1. The utility model provides a high-temperature radiation source encapsulation is with big moment of torsion sucking disc which characterized in that: the device comprises a flange bearing, a vacuum chuck structure and a torque transmission structure; the vacuum sucker structure comprises a vacuumizing structure and a silica gel sucker arranged at one end of the flange bearing; the silica gel sucker can be adsorbed on the surface of an adsorbed object to form a vacuum cavity; the vacuumizing structure is connected with the vacuum cavity; the torque transmission structure extends into the vacuum cavity to act on the adsorbate to transmit torque to the adsorbate.
2. The high-torque sucker for packaging high-temperature radioactive sources of claim 1, wherein: the torque transmission structure comprises a pin disc and a fixed shaft; at least two pins are arranged on the pin disc; the pin is matched with a positioning hole arranged on the surface of the adsorbed object; the silica gel sucker and the pin plate are both connected with the fixed shaft, and the pin plate is positioned in the vacuum cavity; the fixed shaft penetrates through the flange bearing and does not rotate relative to the flange bearing.
3. The high-torque sucker for packaging high-temperature radioactive sources of claim 2, wherein: the pin plate is fixed on the fixed shaft through a hollow compression screw; the fixed shaft is a hollow spline shaft; and the hollow cavity of the hollow compression screw is communicated with the hollow cavity of the hollow spline shaft to form the vacuumizing structure.
4. The high-torque sucker for packaging high-temperature radioactive sources of claim 3, wherein: and one end of the hollow spline shaft is used for installing the silica gel sucker and the pin disc, and the other end of the hollow spline shaft is provided with a locking end cover.
5. The high-torque sucker for packaging high-temperature radioactive sources of claim 4, wherein: the upper hollow screw penetrates through the stop end cover; and the hollow cavity of the upper hollow screw is connected with the hollow cavity of the hollow spline shaft.
6. The high-torque sucker for packaging high-temperature radioactive sources as claimed in claim 4 or 5, wherein: and buffer springs are arranged between the stop end cover and the flange bearing and between the silica gel sucker and the flange bearing.
7. The high-torque sucker for packaging high-temperature radioactive sources of claim 6, wherein: the buffer spring is sleeved on the hollow spline shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911093517.9A CN110815130A (en) | 2019-11-11 | 2019-11-11 | High-torque sucker for packaging high-temperature radioactive source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911093517.9A CN110815130A (en) | 2019-11-11 | 2019-11-11 | High-torque sucker for packaging high-temperature radioactive source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110815130A true CN110815130A (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911093517.9A Pending CN110815130A (en) | 2019-11-11 | 2019-11-11 | High-torque sucker for packaging high-temperature radioactive source |
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| Country | Link |
|---|---|
| CN (1) | CN110815130A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0985551A (en) * | 1995-09-20 | 1997-03-31 | Suzuki Motor Corp | Chucking device for attaching and detaching cap |
| CN201893129U (en) * | 2010-11-19 | 2011-07-06 | 中国辐射防护研究院 | Threaded packaging pipe for conditioning spent radioactive sources |
| CN103964292A (en) * | 2014-05-27 | 2014-08-06 | 广州大正新材料科技有限公司 | Movable sucking disk hoisting device |
| CN207139201U (en) * | 2017-09-14 | 2018-03-27 | 东北林业大学 | A kind of modified automatic gear-box fluid torque-converter sucker suspender |
| CN107962376A (en) * | 2017-12-27 | 2018-04-27 | 合肥威尔燃油***股份有限公司 | Vacuum cap type device for screwing up |
| JP2019104092A (en) * | 2017-12-13 | 2019-06-27 | 川崎重工業株式会社 | Screwdriver tool, screwdriver device, method for conveying and fastening screw |
-
2019
- 2019-11-11 CN CN201911093517.9A patent/CN110815130A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0985551A (en) * | 1995-09-20 | 1997-03-31 | Suzuki Motor Corp | Chucking device for attaching and detaching cap |
| CN201893129U (en) * | 2010-11-19 | 2011-07-06 | 中国辐射防护研究院 | Threaded packaging pipe for conditioning spent radioactive sources |
| CN103964292A (en) * | 2014-05-27 | 2014-08-06 | 广州大正新材料科技有限公司 | Movable sucking disk hoisting device |
| CN207139201U (en) * | 2017-09-14 | 2018-03-27 | 东北林业大学 | A kind of modified automatic gear-box fluid torque-converter sucker suspender |
| JP2019104092A (en) * | 2017-12-13 | 2019-06-27 | 川崎重工業株式会社 | Screwdriver tool, screwdriver device, method for conveying and fastening screw |
| CN107962376A (en) * | 2017-12-27 | 2018-04-27 | 合肥威尔燃油***股份有限公司 | Vacuum cap type device for screwing up |
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| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20200221 |