CN208057862U - A kind of lead screw for command bundle rods for nuclear reactors driving mechanism - Google Patents
A kind of lead screw for command bundle rods for nuclear reactors driving mechanism Download PDFInfo
- Publication number
- CN208057862U CN208057862U CN201820400022.0U CN201820400022U CN208057862U CN 208057862 U CN208057862 U CN 208057862U CN 201820400022 U CN201820400022 U CN 201820400022U CN 208057862 U CN208057862 U CN 208057862U
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- CN
- China
- Prior art keywords
- lead screw
- thread
- driving mechanism
- nuclear reactors
- command bundle
- 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- Withdrawn - After Issue
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Classifications
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- 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
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Abstract
The utility model discloses a kind of lead screw for command bundle rods for nuclear reactors driving mechanism, the external screw thread tooth form section of the lead screw is to face triangle, concave surface circular triangle or trapezoidal directly.The utility model sets facing directly the external screw thread tooth form section of lead screw to triangle, concave surface circular triangle or trapezoidal, so as to eliminate the interference problem that existing lead screw generates.Lead screw provided by the utility model has smaller screw pitch compared to existing lead screw, increases the quantity of thread groove, increases contact point, improves bearing capacity.Therefore, the lead screw provided by the utility model for command bundle rods for nuclear reactors driving mechanism eliminates interference compared with existing screw structure, the carrying with bigger, and longer life expectancy is more reliable.
Description
Technical field
The utility model is related to the technical fields of Mechanical Driven, more particularly to one kind being used for command bundle rods for nuclear reactors driving machine
The lead screw of structure.
Background technology
Currently used screw structure is also easy to produce interference when being engaged with roller structure, abrasion is serious, short life.Traditional lead screw
Structure is reduced and is rolled caused by many factors such as repetitive positioning accuracy, mismachining tolerance due to the severe of environment, high temperature, nut folding
There are deviation in the practical position of engagement of wheel assembly and the position of engagement of Theoretical Design, generate interference engagement, there be big answer in the position of engagement
Power is concentrated, and quick abrasion or scratch, short life are caused.The utility model eliminates interference, improves carrying, is greatly improved
Life and reliability.
Utility model content
To solve limitation and defect of the existing technology, the utility model provides a kind of for command bundle rods for nuclear reactors drive
The lead screw of motivation structure.
For this purpose, the utility model provides a kind of lead screw for command bundle rods for nuclear reactors driving mechanism, the lead screw it is outer
Form of thread section is to face triangle, concave surface circular triangle or trapezoidal directly.
Optionally, it is 30 degree to 150 degree that tooth form section, which is the angular range of the angle of thread for the screw thread for facing triangle directly,.
Optionally, tooth form section is preferably 90 degree of the angle of the angle of thread for the screw thread for facing triangle directly.
Optionally, it is 30 degree to 150 degree that tooth form section, which is the angular range of the angle of thread of the screw thread of concave surface circular triangle,.
Optionally, tooth form section is preferably 90 degree of the angle of the angle of thread of the screw thread of concave surface circular triangle.
Optionally, it is 30 degree to 60 degree that tooth form section, which is the angular range of the angle of thread of trapezoidal screw thread, and trapezoidal thread exists
Specific correction of the flank shape is passed through at the interference position of tooth top and tooth root, to eliminate interference.
Optionally, the threaded line of the lead screw is single line or multi-thread.
Optionally, one end of the lead screw is provided with bolt hole, the lead screw by bolt through the bolt hole with
Load connection；Or bolt of the lead screw by screw-thread fit through the bolt hole is connected with load；Or the lead screw
Bolt by spline fitted through the bolt hole is connected with load.
Optionally, one end of the lead screw is provided with smooth circular shaft, flat key optical axis or spline pin hole, and the lead screw passes through
Either the spline pin hole is connect with position sensor or pressure sensor for the smooth circular shaft, the flat key optical axis.
The utility model has following advantageous effects：
The utility model is set as the external screw thread tooth form section of lead screw to face triangle, concave surface circular triangle or ladder directly
Shape, so as to eliminate the interference problem that existing lead screw generates.Lead screw provided by the utility model has compared to existing lead screw
Smaller screw pitch increases the quantity of thread groove, increases contact point, improves bearing capacity.Therefore, the utility model provides
The lead screw for command bundle rods for nuclear reactors driving mechanism, compared with existing screw structure, eliminate interference, carrying improve, make
8 to 10 times are improved with the service life.
Description of the drawings
Fig. 1 is a kind of structural representation of lead screw for command bundle rods for nuclear reactors driving mechanism provided by the utility model
Figure.
Fig. 2 is a kind of enlarged diagram of the part A in external screw thread tooth form section shown in Fig. 1.
Fig. 3 is another enlarged diagram of the part A in external screw thread tooth form section shown in Fig. 1.
Fig. 4 is another enlarged diagram of the part A in external screw thread tooth form section shown in Fig. 1.
Fig. 5 is the structural representation of another lead screw for command bundle rods for nuclear reactors driving mechanism provided by the utility model
Figure.
Reference numeral：
1- lead screws；2- bolts hole.
Specific implementation mode
To make those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings to this reality
It is described in detail with the lead screw for command bundle rods for nuclear reactors driving mechanism of novel offer.
Embodiment one
Fig. 1 is a kind of structural representation of lead screw for command bundle rods for nuclear reactors driving mechanism provided by the utility model
Figure, Fig. 2 are a kind of enlarged diagram of the part A in external screw thread tooth form section shown in Fig. 1, and Fig. 3 is that external screw thread tooth form shown in Fig. 1 is cut
Another enlarged diagram of the part A in face, Fig. 4 are another amplification signal of the part A in external screw thread tooth form section shown in Fig. 1
Figure.
As shown in Figs 1-4, the external screw thread tooth form section of the lead screw 1 be face directly triangle, concave surface circular triangle or
It is specific trapezoidal.The present embodiment by the external screw thread tooth form section of lead screw 1 be set as facing directly triangle, concave surface circular triangle or
It is trapezoidal after specific correction of the flank shape, so as to eliminate the interference problem that existing lead screw generates.
Referring to Fig. 2, tooth form section is that the angular range of the angle of thread for the screw thread for facing triangle directly is 30 degree to 150 degree.It is excellent
Choosing, tooth form section is that the angle of the angle of thread for the screw thread for facing triangle directly is 90 degree.Referring to Fig. 3, when the outer spiral shell of the lead screw 1
When line tooth form section is concave surface circular triangle, angle of the concave surface circular triangle in the angle of the tangent line of central diameter point cambered surface
Ranging from 30 degree to 150 degree.Preferably, the concave surface circular triangle is 90 in the angle of the angle of the tangent line of central diameter point cambered surface
Degree.Lead screw 1 provided in this embodiment has smaller screw pitch compared to existing lead screw, increases the quantity of thread groove, increases
Contact point improves bearing capacity.
Referring to Fig. 4, tooth form section is that the angular range of the angle of thread of trapezoidal screw thread is 30 degree to 60 degree, by tooth top
Trapezoidal thread with after the specific correction of the flank shape in root interference position, can effectively eliminate interference.The threaded line of the lead screw 1 is single line
Or it is multi-thread.Lead screw provided in this embodiment for command bundle rods for nuclear reactors driving mechanism, compared with existing screw structure,
Dynamic loading, limit speed are obtained for prodigious raising, and life and reliability is greatly improved.
Fig. 5 is the structural representation of another lead screw for command bundle rods for nuclear reactors driving mechanism provided by the utility model
Figure.As shown in figure 5, one end of the lead screw 1 is provided with bolt hole 2, the lead screw 1 by bolt through the bolt hole with
Either the lead screw 1 through the bolt in the bolt hole and loads connection or the lead screw by screw-thread fit for load connection
1 bolt by spline fitted through the bolt hole is connected with load.That is, one end of the lead screw 1 connects with load
It connects, connection type flexibility is strong, and a variety of connection structures can be used, and can simply be threadedly coupled, and can be bolt connection, can
Can also be the connection of spline fitted bolt to be the connection of screw-thread fit bolt.
Referring to Fig. 5, one end of the lead screw 1 passes through smooth circular shaft, flat key optical axis or spline pin hole and position sensor
Or pressure sensor connection.Specifically, smooth circular shaft, flat key optical axis or spline can be used in the other end of the lead screw 1
The modes such as pin hole are attached with position sensor or pressure sensor.
External screw thread on lead screw 1 provided in this embodiment can be with the planetary roller structure of command bundle rods for nuclear reactors driving mechanism
Mating engagement rotates, and can also be rotated with the arc surface roller structure mating engagement of command bundle rods for nuclear reactors driving mechanism, can also be with
The combination of dead axle idler wheel matches, and combination is formed can division, not clamping stagnation, big load, highly reliable leading screw auxiliary structure.
The operation principle of lead screw provided in this embodiment for command bundle rods for nuclear reactors driving mechanism is as follows：
The lead screw 1 directly couples load, and idler wheel is rotated, the screw thread on idler wheel and the external screw thread screw pitch on lead screw 1
Identical and engagement, driving lead screw 1 are made to move along a straight line up and down, and the drive of linear motion up and down of lead screw 1 loads to appointed place.
The present embodiment is set as the external screw thread tooth form section of lead screw 1 to face triangle, concave surface circular triangle or ladder directly
Shape, so as to eliminate the interference problem that existing lead screw generates.Lead screw 1 provided in this embodiment compared to existing lead screw have compared with
Small screw pitch increases the quantity of thread groove, increases contact point, improves bearing capacity.Therefore, use provided in this embodiment
In the lead screw of command bundle rods for nuclear reactors driving mechanism, compared with existing screw structure, dynamic loading, limit speed are obtained for very
Big raising, is greatly improved life and reliability.
It is understood that embodiment of above is merely to illustrate that the principles of the present invention and uses exemplary
Embodiment, however the utility model is not limited thereto.For those skilled in the art, this is not being departed from
In the case of the spirit and essence of utility model, various changes and modifications can be made therein, these variations and modifications are also considered as this reality
With novel protection domain.
Claims (9)
1. a kind of lead screw for command bundle rods for nuclear reactors driving mechanism, which is characterized in that the external screw thread tooth form of the lead screw is cut
Face is to face triangle, concave surface circular triangle or trapezoidal directly.
2. the lead screw according to claim 1 for command bundle rods for nuclear reactors driving mechanism, which is characterized in that tooth form section
The angular range of angle of thread to face the screw thread of triangle directly is 30 degree to 150 degree.
3. the lead screw according to claim 2 for command bundle rods for nuclear reactors driving mechanism, which is characterized in that tooth form section
For face directly triangle screw thread angle of thread preferably 90 degree of angle.
4. the lead screw according to claim 1 for command bundle rods for nuclear reactors driving mechanism, which is characterized in that tooth form section
Angular range for the angle of thread of the screw thread of concave surface circular triangle is 30 degree to 150 degree.
5. the lead screw according to claim 4 for command bundle rods for nuclear reactors driving mechanism, which is characterized in that tooth form section
For preferably 90 degree of the angle of the angle of thread of the screw thread of concave surface circular triangle.
6. the lead screw according to claim 1 for command bundle rods for nuclear reactors driving mechanism, which is characterized in that tooth form section
Angular range for the angle of thread of trapezoidal screw thread is 30 degree to 60 degree, and trapezoidal thread passes through at the interference position of tooth top and tooth root
Specific correction of the flank shape, to eliminate interference.
7. the lead screw according to claim 1 for command bundle rods for nuclear reactors driving mechanism, which is characterized in that the lead screw
Threaded line be single line or multi-thread.
8. the lead screw according to claim 1 for command bundle rods for nuclear reactors driving mechanism, which is characterized in that the lead screw
One end be provided with bolt hole, the lead screw is connected by the bolt through the bolt hole with load；Or the lead screw is logical
Bolt of the screw-thread fit through the bolt hole is crossed to connect with load；Or the lead screw runs through the bolt by spline fitted
The bolt in hole is connected with load.
9. the lead screw according to claim 1 for command bundle rods for nuclear reactors driving mechanism, which is characterized in that the lead screw
One end be provided with smooth circular shaft, flat key optical axis or spline pin hole, the lead screw passes through the smooth circular shaft, the flat key light
Either the spline pin hole is connect axis with position sensor or pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820400022.0U CN208057862U (en) | 2018-03-23 | 2018-03-23 | A kind of lead screw for command bundle rods for nuclear reactors driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820400022.0U CN208057862U (en) | 2018-03-23 | 2018-03-23 | A kind of lead screw for command bundle rods for nuclear reactors driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208057862U true CN208057862U (en) | 2018-11-06 |
Family
ID=63988323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820400022.0U Withdrawn - After Issue CN208057862U (en) | 2018-03-23 | 2018-03-23 | A kind of lead screw for command bundle rods for nuclear reactors driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208057862U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115853985A (en) * | 2023-02-22 | 2023-03-28 | 杭州新剑机电传动股份有限公司 | Planetary roller screw pair capable of realizing bidirectional self-locking |
-
2018
- 2018-03-23 CN CN201820400022.0U patent/CN208057862U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115853985A (en) * | 2023-02-22 | 2023-03-28 | 杭州新剑机电传动股份有限公司 | Planetary roller screw pair capable of realizing bidirectional self-locking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20181106 Effective date of abandoning: 20181205 |
|
| AV01 | Patent right actively abandoned |