CN108167299A - The bolt replacing options of wind power generating set, reducing bolt assembly and large scale equipment - Google Patents
The bolt replacing options of wind power generating set, reducing bolt assembly and large scale equipment Download PDFInfo
- Publication number
- CN108167299A CN108167299A CN201711408896.7A CN201711408896A CN108167299A CN 108167299 A CN108167299 A CN 108167299A CN 201711408896 A CN201711408896 A CN 201711408896A CN 108167299 A CN108167299 A CN 108167299A
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- Prior art keywords
- bolt
- reducing
- major diameter
- replaced
- diameter section
- 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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- 238000000034 method Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 5
- 206010017076 Fracture Diseases 0.000 description 18
- 208000010392 Bone Fractures Diseases 0.000 description 17
- 238000010586 diagram Methods 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
- F16B31/06—Screwed connections specially modified in view of tensile load; Break-bolts having regard to possibility of fatigue rupture
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/50—Maintenance or repair
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Wind Motors (AREA)
Abstract
The present invention relates to technical field of wind power generating equipment, more particularly to a kind of reducing bolt assembly, including reducing bolt, sleeve and nut；The reducing bolt includes bolt head, major diameter section, light bar segment and thread segment, and the radius of the major diameter section is more than the radius of light bar segment；The sleeve is used to be set in outside the major diameter section；The nut is used to connect with the thread segment.Reducing bolt assembly provided by the invention, without changing the size of bolt head and the connection specification of bolt, you can greatly improve bonding strength and reliability, reduce risk of breakage；Even if bolt fracture occurs, also bolt is only needed to change in itself, and no longer need the mounting hole of connected piece to be rectified and improved or replaced large-scale connected piece, and replacement is convenient, fast, greatly reduce maintenance cost.The present invention still further provides the bolt replacing options of a kind of wind power generating set and large scale equipment.
Description
Technical field
The present invention relates to technical field of wind power generating equipment, more particularly to a kind of wind power generating set, reducing bolt assembly
And the bolt replacing options of large scale equipment.
Background technology
As the required part of connection, the connection reliability of bolt is particularly significant, especially in some repairs, replaces extremely not
Just seem most important in large scale equipment.By taking wind power generator group as an example, to obtain sufficiently large air quantity, wind power generating set
Blade assembly and the large components such as generator be arranged on by towering tower support it is high aerial, due to bulky, and position
In high-altitude, the repair replacement operation of wind power generating set is extremely inconvenient, not only time-consuming and laborious but also costly.
In wind power generating set, being linked and packed for the large components such as blade, wheel hub, tower is both needed to use a large amount of spiral shell
Inevitably often there is the problems such as bolt fracture in bolt, and the bolt used at present is all common conventional stud, conventional
Bolt head is mostly small round corner, easy stress concentration, apply larger screw-down torque and by it is complicated when overloaded, there are larger fractures
Risk belongs to rapid wear accessory.If appearance fracture needs replacing, conventional method can only expand the mounting holes such as threaded hole or unthreaded hole
Greatly, the bolt for increasing model specification is replaced with, but for large scale equipment, the real category of operation is enlarged to threaded hole or unthreaded hole
It is not easy, especially for being located at high-altitude and bulky wind power generating set, conventional method is substantially infeasible, therefore very much
When have to then replace blade, wheel hub, the connected pieces such as tower, lead to that with high costs, maintenance difficulty is very big.
To sum up, due to the particularity of wind power generating set, even a bolt, performance can directly affect wind-force hair
The safety and quality of motor group, if can design, a kind of connection is reliable, easy fracture, repair is not allowed to replace easy bolt, to wind-force
There is huge economic implications for the large scale equipments such as generating set.
Patent No. CN201220160401, the Chinese utility model patent of entitled " commercial automobile-used reducing bolt " disclose
A kind of commercialization automobile-used reducing bolt for the connection of the accessory holders such as commercial vehicle carriage and fixed pipeline, harness, passes through small rule
Lattice nut replaces original big sized bolt, nut, realizes the cooperation and connection of large diameter hole vehicle frame and small diameter bore stent.The change
The connector that diameter bolt can be used for two pore sizes different uses, and bolt head opposite thread specification is increased, and uncomfortable
Wind power generating set is closed to use.
Invention content
The purpose of the present invention is to provide the bolt replacements of a kind of wind power generating set, reducing bolt assembly and large scale equipment
Method is easily broken off with solving conventional stud, repairs and replace the technical problems such as inconvenience.
First aspect present invention provides a kind of reducing bolt assembly, including reducing bolt, sleeve and nut；The change
Diameter bolt includes bolt head, major diameter section, light bar segment and thread segment, and the radius of the major diameter section is more than the radius of light bar segment；It is described
Sleeve is used to be set in outside the major diameter section；The nut is used to connect with the thread segment.
Further, the bolt head uses turret head.
Further, pass through flanged joint between the bolt head and the major diameter section.
Further, the junction of the flange base and major diameter section, which is equipped with, increases fillet.
Further, it is connected between the major diameter section and light bar segment by reducing changeover portion.
Further, the reducing bolt is made of integral forming process.
Second aspect of the present invention provides a kind of wind power generating set, using reducing bolt group described in any one of the above embodiments
Part is as connector.
Third aspect present invention additionally provides a kind of bolt replacing options of large scale equipment, using described in any of the above-described
Reducing bolt assembly the bolt of fracture is replaced, include the following steps：
S1：According to bolt fracture rule, selection step a S21 or S22 is selected；
S21：If bolt is often broken, and fracture position occurs at random, then all bolts is integrally replaced；
S22：If bolt is often broken, and fracture position is fixed on several positions of part, then to break bolt and
Each adjacent at least one bolt in its left and right is replaced.
Further, in step S22, two adjacent bolts each to break bolt and its left and right are replaced.
Further, adjacent two each to break bolt and its left and right using the different reducing bolt assembly of three kinds of length
Bolt is replaced, wherein, break bolt is replaced using the longest first reducing bolt assembly of length, using length it is placed in the middle the
Two reducing bolt assemblies replace break bolt or so each first adjacent bolt；Using the shortest third reducing bolt group of length
Part replaces break bolt or so each second adjacent bolt.
Reducing bolt assembly provided by the invention, without changing the size of bolt head and the connection specification of bolt, you can big
It is big to improve bonding strength and reliability, reduce risk of breakage；Even if bolt fracture occurs, also bolt is only needed to change in itself, without
It needs the mounting hole of connected piece to be rectified and improved or replaced large-scale connected piece, and replacement is convenient, fast, substantially reduces again
Maintenance cost.
Description of the drawings
The attached drawing for forming the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the structure diagram of one reducing bolt assembly of the embodiment of the present invention；
Fig. 2 is the structure diagram of one reducing bolt of the embodiment of the present invention；
Fig. 3 is the application structure diagrammatic cross-section of one reducing bolt assembly of the embodiment of the present invention；
Fig. 4 is the schematic diagram that the whole circle of the embodiment of the present invention three replaces bolt；
Fig. 5 is the schematic diagram of three local replacing bolt of the embodiment of the present invention.
In figure：1st, reducing bolt；11st, bolt head；12nd, flange；13rd, major diameter section；14th, reducing changeover portion；15th, light bar segment；
16th, thread segment；2nd, sleeve；3rd, nut.41st, the first connected piece；42nd, the second connected piece；101st, the first reducing bolt assembly；
102nd, the second reducing bolt assembly；103rd, third reducing bolt assembly.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected or be integrally connected,
Can be mechanically connected or be connected directly, can also be indirectly connected by intermediary, can be inside two elements
Connection.For the ordinary skill in the art, above-mentioned term in the present invention specific can be understood with concrete condition
Meaning.
Embodiment one
As shown in Figure 1, the reducing bolt assembly of the present embodiment includes reducing bolt 1, sleeve 2 and nut 3；With reference to Fig. 2 institutes
Showing, reducing bolt 1 includes bolt head 11, flange 12, major diameter section 13, reducing changeover portion 14, light bar segment 15 and thread segment 16 successively,
Wherein the radius of major diameter section 13 is more than the radius of light bar segment 15；Reducing bolt 1 is made of integral forming process, and sleeve 2 is used for
It is set in outside major diameter section 13；Nut 3 is used to connect with thread segment 16.
Using the present embodiment reducing bolt assembly as connector when, first confirm that the screw thread of nut 3 and reducing bolt 1
Section 16 separates placement, and sleeve 2 is sheathed on outside the major diameter section 13 of reducing bolt 1, and reducing bolt 1 then is inserted into the first connected piece
41 and second connected piece 42 unthreaded hole in, until thread segment 16 exposes outside the second connected piece 42, then nut 3 is screwed in
Thread segment 16, until the first connected piece 41 and the second connected piece 42 are connected firmly.After installation, as shown in figure 3, sleeve 2
Be supported between the upper surface of 41 unthreaded hole of the first connected piece and the flange 12 of reducing bolt 1, the major diameter section 13 of reducing bolt 1 and
Reducing changeover portion 14 is hidden in sleeve 2, and light bar segment 15 is threaded through the unthreaded hole of the first connected piece 41 and the second connected piece 42
Interior, thread segment 16 is extend out to outside the second connected piece 42, and is passed through nut 3 and be tightened.
Compared to conventional bolt, the reducing bolt assembly of the present embodiment changes conventional to be connected with connected piece by screw thread
The mode connect without relying on the mounting hole of connected piece again, thus even if bolt is broken, is connected without rectification is tried again
The mounting hole of fitting, and bolt need to only be replaced in itself, and replacement is convenient, fast, it can so avoid replacing big
The connected piece of type considerably reduces maintenance cost, reduces maintenance difficulty.
In the present embodiment, the bolt head 11 of reducing bolt 1 uses the common spiral shell of conventional turret head, size and same specification
Bolt is identical, and the tools such as the spanner being equipped with originally still can be used to carry out torquing operations, be reduced as far as number of tools, facilitated
Maintenance operation.In addition, the size of bolt head waits the small environment in operating spaces without increasing, for compact-sized or pitch of bolts is small
Under, it is more prominent using advantage.Certainly, certain situations for needing to increase bolt area of bed are not precluded in the present embodiment,
For example 5mm, 10mm etc. are increased, as long as using the structure of the present embodiment, within the present embodiment protection domain.
Further, the junction between the flange 12 of reducing bolt 1 and major diameter section 13, which is equipped with, increases fillet, increasing circle
Angle is increased with respect to the fillet of plain bolt, can effectively reduce stress concentration, greatly improves the intensity at bolt head, greatly
Reduce the risk for occurring bolt fracture at bolt head greatly.In addition, effective contact area that reducing bolt 1 is bonded sleeve 2 is more than
Conventional stud can further improve contact.
The reducing bolt assembly of the present embodiment, without changing the size of bolt head and the connection specification of bolt, you can significantly
It improves bonding strength and reliability, reduce risk of breakage；Even if bolt fracture occurs, also bolt is only needed to change in itself, and no longer
It needs the mounting hole of connected piece to be rectified and improved or replaced large-scale connected piece, and replacement is convenient, fast, greatly reduces
Maintenance cost.
The reducing bolt assembly of the present embodiment, suitable for the identical connected piece in two apertures of connection, suitable application area and model
It encloses extensively, there is huge economic implications particularly with large scale equipments such as wind power generating sets.
Embodiment two
Based on the above, the present embodiment additionally provides a kind of wind power generating set, using above-mentioned reducing bolt assembly conduct
Connector for connecting the large components such as blade, wheel hub, tower, by using above-mentioned reducing bolt assembly, is greatly improved
Connection reliability reduces bolt fracture risk and maintenance and replacement cost.
Embodiment three
Present embodiments provide a kind of bolt replacing options of large scale equipment, bolt occur fracture need replacing when
It waits, the reducing bolt assembly provided using embodiment one, and coordinates replacing options provided in this embodiment, can send out to the greatest extent
The use advantage of reducing bolt assembly is waved, reduces the risk that bolt is broken again.
Specifically include following steps：
S1：The Fracture of bolt is summarized in observation, and a selection integral replacing mode or local replacing mode are selected according to rule,
Step S21 and S22 are seen respectively；
S21：If bolt is often broken, and fracture position occurs at random, then all bolts is replaced；
S22：If bolt is often broken, and fracture position is fixed on several positions of part, then to break bolt and
Each adjacent at least one bolt in its left and right is replaced.
Below by taking wind power generating set as an example, above-mentioned replacing options are described in detail with reference to Fig. 4, Fig. 5.
As shown in figure 4, since bolt herein is often broken, and fracture position occurs at random, then to the spiral shell of whole circle
Bolt carries out integral replacing, and the structure after replacement is as shown in Figure 4.
As shown in figure 5, bolt herein is also often broken, but fracture position is fixed on several positions of part, right
It, only need to adjacent two bolts progress each to break bolt and its left and right without all bolts are carried out with integral replacing in herein
Replacement.
Specifically, to realize that stress is best, the different reducing bolt assembly of three kinds of length can be used and arranged in gradient to disconnected
Each two adjacent bolts of bolt and its left and right are split to be replaced, wherein, using the longest first reducing bolt assembly 101 of length
Break bolt is replaced, each adjacent first of break bolt or so is replaced using the second placed in the middle reducing bolt assembly 102 of length
Bolt；Break bolt or so each second adjacent bolt is replaced using the shortest third reducing bolt assembly 103 of length.
It should be noted that break bolt or so, each adjacent bolt replacement quantity is not limited to this, except above-mentioned
Two outer, both can be each adjacent bolt in left and right or three, four, five or more other possibility.In addition, more
The length specification for changing the reducing bolt assembly of use is also not limited to this, can be isometric or other selections,
It is determined according to actual conditions.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.In addition,
It will be appreciated by those of skill in the art that although some embodiments described herein include it is included certain in other embodiments
Feature rather than other feature, but the combination of the feature of different embodiments means to be within the scope of the present invention and shape
Into different embodiments.
Claims (10)
1. a kind of reducing bolt assembly, it is characterised in that：Including reducing bolt (1), sleeve (2) and nut (3)；The reducing spiral shell
Bolt (1) includes bolt head (11), major diameter section (13), light bar segment (15) and thread segment (16), and the radius of the major diameter section (13) is big
Radius in light bar segment (15)；The sleeve (2) is external for being set in the major diameter section (13)；The nut (3) for
Thread segment (16) connection.
2. reducing bolt assembly according to claim 1, it is characterised in that：The bolt head (11) is using turret head.
3. reducing bolt assembly according to claim 1 or 2, it is characterised in that：The bolt head (11) and the major diameter
It is connected between section (13) by flange (12).
4. reducing bolt assembly according to claim 3, it is characterised in that：Flange (12) bottom and major diameter section (13)
Junction be equipped with increase fillet.
5. reducing bolt assembly according to claim 4, it is characterised in that：The major diameter section (13) and light bar segment (15) it
Between pass through reducing changeover portion (14) connect.
6. reducing bolt assembly according to claim 5, it is characterised in that：The reducing bolt (1) is using integrated molding
Technique is made.
7. a kind of wind power generating set, it is characterised in that：Using claim 1-6 any one of them reducing bolt assembly conducts
Connector.
8. a kind of bolt replacing options of large scale equipment, using claim 1-6 any one of them reducing bolt assemblies to disconnected
The bolt split is replaced, it is characterised in that is included the following steps：
S1：According to bolt fracture rule, selection step a S21 or S22 is selected；
S21：If bolt is often broken, and fracture position occurs at random, then all bolts is integrally replaced；
S22：If bolt is often broken, and fracture position is fixed on several positions of part, then to break bolt and its a left side
Right each adjacent at least one bolt is replaced.
9. the bolt replacing options of large scale equipment according to claim 8, it is characterised in that：In step S22, to being broken spiral shell
Each two adjacent bolts of bolt and its left and right are replaced.
10. the bolt replacing options of large scale equipment according to claim 9, it is characterised in that：
It is replaced using the different reducing bolt assembly of three kinds of length two adjacent bolts each to break bolt and its left and right,
Wherein, break bolt is replaced using the longest first reducing bolt assembly of length, using the second reducing bolt group that length is placed in the middle
Part replaces break bolt or so each first adjacent bolt；Fracture spiral shell is replaced using the shortest third reducing bolt assembly of length
Each second adjacent bolt of bolt or so.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711408896.7A CN108167299B (en) | 2017-12-22 | 2017-12-22 | Wind generating set, reducing bolt assembly and bolt replacement method of large-scale equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711408896.7A CN108167299B (en) | 2017-12-22 | 2017-12-22 | Wind generating set, reducing bolt assembly and bolt replacement method of large-scale equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108167299A true CN108167299A (en) | 2018-06-15 |
| CN108167299B CN108167299B (en) | 2024-07-30 |
Family
ID=62523672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711408896.7A Active CN108167299B (en) | 2017-12-22 | 2017-12-22 | Wind generating set, reducing bolt assembly and bolt replacement method of large-scale equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108167299B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1274961A (en) * | 1969-05-23 | 1972-05-17 | Maschf Augsburg Nuernberg Ag | A preloaded assembly comprising two or more members secured together by a screw-threaded connection |
| US5702214A (en) * | 1996-11-07 | 1997-12-30 | Avibank Mfg., Inc. | Non-removable structural fastener assembly |
| US6149363A (en) * | 1998-10-29 | 2000-11-21 | Huck International, Inc. | Lightweight threaded fastener and thread rolling die |
| DE202004004542U1 (en) * | 2003-09-19 | 2004-07-15 | Seeba Energiesysteme Gmbh | Locking washer for nut-and bolt fastenings subjected to high stresses fits between bolt head and component of joint nearest to it and is conical in shape, wider end being fitted so that it rests on component |
| CN201265586Y (en) * | 2008-08-30 | 2009-07-01 | 中国北车集团大连机车研究所有限公司 | Flexible bolt for connecting stand and casing of turbosupercharger |
| CN204327708U (en) * | 2014-11-24 | 2015-05-13 | 玉环精工机械制造有限公司 | A kind of rear tyre bolt |
| CN106609787A (en) * | 2015-10-26 | 2017-05-03 | 江苏苏洋机电工具有限公司 | High-strength fastening bolt |
| CN207621147U (en) * | 2017-12-22 | 2018-07-17 | 三一重能有限公司 | Wind power generating set and reducing bolt assembly |
-
2017
- 2017-12-22 CN CN201711408896.7A patent/CN108167299B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1274961A (en) * | 1969-05-23 | 1972-05-17 | Maschf Augsburg Nuernberg Ag | A preloaded assembly comprising two or more members secured together by a screw-threaded connection |
| US5702214A (en) * | 1996-11-07 | 1997-12-30 | Avibank Mfg., Inc. | Non-removable structural fastener assembly |
| US6149363A (en) * | 1998-10-29 | 2000-11-21 | Huck International, Inc. | Lightweight threaded fastener and thread rolling die |
| DE202004004542U1 (en) * | 2003-09-19 | 2004-07-15 | Seeba Energiesysteme Gmbh | Locking washer for nut-and bolt fastenings subjected to high stresses fits between bolt head and component of joint nearest to it and is conical in shape, wider end being fitted so that it rests on component |
| CN201265586Y (en) * | 2008-08-30 | 2009-07-01 | 中国北车集团大连机车研究所有限公司 | Flexible bolt for connecting stand and casing of turbosupercharger |
| CN204327708U (en) * | 2014-11-24 | 2015-05-13 | 玉环精工机械制造有限公司 | A kind of rear tyre bolt |
| CN106609787A (en) * | 2015-10-26 | 2017-05-03 | 江苏苏洋机电工具有限公司 | High-strength fastening bolt |
| CN207621147U (en) * | 2017-12-22 | 2018-07-17 | 三一重能有限公司 | Wind power generating set and reducing bolt assembly |
Non-Patent Citations (1)
| Title |
|---|
| 约翰·迪尔公司: "水泥设备维修常见疑难问题与对策", 31 August 1992, 上海科学技术出版社, pages: 17 * |
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|---|---|
| CN108167299B (en) | 2024-07-30 |
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Address after: 102206 31 Industrial Park, North Qing Road, Beijing, Changping District Applicant after: Sany Heavy Energy Co.,Ltd. Address before: 102206 31 Industrial Park, North Qing Road, Beijing, Changping District Applicant before: SANY HEAVY ENERGY Co.,Ltd. |
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