FR2087100A1 - Anti backlash ball nut for nuclear fuel rod positioning screws - Google Patents
Anti backlash ball nut for nuclear fuel rod positioning screwsInfo
- Publication number
- FR2087100A1 FR2087100A1 FR7016305A FR7016305A FR2087100A1 FR 2087100 A1 FR2087100 A1 FR 2087100A1 FR 7016305 A FR7016305 A FR 7016305A FR 7016305 A FR7016305 A FR 7016305A FR 2087100 A1 FR2087100 A1 FR 2087100A1
- Authority
- FR
- France
- Prior art keywords
- nuclear fuel
- fuel rod
- rod positioning
- ball nut
- positioning screws
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/002—Elastic or yielding linear bearings or bearing supports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/06—Devices or arrangements for monitoring or testing fuel or fuel elements outside the reactor core, e.g. for burn-up, for contamination
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Transmission Devices (AREA)
Abstract
The nut for use on lead screws in nuclear fuel rod positioning or radioactivity mapping machine traverses, consists of two sets each of two ball races and two outer guide tubes arranged coaxial with the axis of the lead screw and symmetrically about a plane perp. to that axis. Each guide tube has a tapered longitudinal slit and one is fixed to the housing both axially and radially whilst the other is fixed axially but free to rotate with the lead screw. The prevention of backlash increases setting accuracy.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7016305A FR2087100A1 (en) | 1970-05-05 | 1970-05-05 | Anti backlash ball nut for nuclear fuel rod positioning screws |
DE19712122284 DE2122284C (en) | 1970-05-05 | 1971-05-05 | Guide device in a test facility for cylindrical rods with a helical guide rib, e.g. nuclear reactor fuel rods |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7016305A FR2087100A1 (en) | 1970-05-05 | 1970-05-05 | Anti backlash ball nut for nuclear fuel rod positioning screws |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2087100A1 true FR2087100A1 (en) | 1971-12-31 |
Family
ID=9055071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7016305A Withdrawn FR2087100A1 (en) | 1970-05-05 | 1970-05-05 | Anti backlash ball nut for nuclear fuel rod positioning screws |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2087100A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2416685A1 (en) * | 1978-02-08 | 1979-09-07 | Holmgren Ortoped | GUIDING DEVICE WITH SCREW AND NUT ANTIFRICTION ASSEMBLY, AND PROSTHESIS EQUIPPED WITH SUCH A DEVICE |
-
1970
- 1970-05-05 FR FR7016305A patent/FR2087100A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2416685A1 (en) * | 1978-02-08 | 1979-09-07 | Holmgren Ortoped | GUIDING DEVICE WITH SCREW AND NUT ANTIFRICTION ASSEMBLY, AND PROSTHESIS EQUIPPED WITH SUCH A DEVICE |
Also Published As
Publication number | Publication date |
---|---|
DE2122284A1 (en) | 1971-11-18 |
DE2122284B2 (en) | 1973-01-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |