CN204003900U - Hot environment lower flange connects locking nut used - Google Patents
Hot environment lower flange connects locking nut used Download PDFInfo
- Publication number
- CN204003900U CN204003900U CN201420397931.5U CN201420397931U CN204003900U CN 204003900 U CN204003900 U CN 204003900U CN 201420397931 U CN201420397931 U CN 201420397931U CN 204003900 U CN204003900 U CN 204003900U
- Authority
- CN
- China
- Prior art keywords
- locking nut
- thread bush
- thread
- bolt
- utility
- 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.)
- Expired - Fee Related
Links
Landscapes
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The utility model discloses a kind of hot environment lower flange and connect locking nut used, after being connected with the bolt of fastening flange, the fastening flange by hydraulic elongator stretching pretension bolt, comprise thread bush and thrust ring, described thread bush has and bolted internal thread, the outside thread that is connected with thrust ring, described outside thread connects the oil cylinder of hydraulic elongator when stretching simultaneously, offers circumferentially at least three uniform axially directed holes on thread bush.The utility model is simple in structure, easy to use, owing to there is no Sealing in this locking nut, can bear the use under higher temperature environment, and mounting or dismounting are convenient, there will not be and fill only non-disconnectable situation.
Description
Technical field
Locking nut used when the utility model relates to a kind of hot environment lower flange and connects.
Background technique
Conventional locking nut is generally comprised of nut body, thrust ring and Sealing, and Sealing is generally made by rubber, under some hot environments as steam turbine cylinder flange connection etc., Sealing in these locking nuts is under long-term high temperature action, distortion that can be is slowly aging, causes when removing very difficultly, forms the non-disconnectable situation that fills only, therefore this locking nut with Sealing, is difficult to meet the use under the hot environment such as steam turbine.
Model utility content
The technical problems to be solved in the utility model is: overcome the deficiency in prior art, the flange that provide a kind of simple in structure, convenient disassembly, is adapted at using under hot environment connects locking nut used.
The utility model solves the technological scheme that its technical problem adopts: a kind of hot environment lower flange connects locking nut used, after being connected with the bolt of fastening flange, the fastening flange by hydraulic elongator stretching pretension bolt, comprise thread bush and thrust ring, described thread bush has and bolted internal thread, the outside thread that is connected with thrust ring, described outside thread connects the oil cylinder of hydraulic elongator when stretching simultaneously, offers circumferentially at least three uniform axially directed holes on thread bush.
Preferably, described axially directed hole number is six.
The beneficial effects of the utility model are: the utility model is simple in structure, easy to use, owing to there is no Sealing in this locking nut, can bear the use under higher temperature environment, and mounting or dismounting are convenient, there will not be and fill only non-disconnectable situation.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is use view of the present utility model.
The 1. thread bush 2. axially directed hole of thrust ring 3. 4. flange 5. bolt 6. oil cylinder 7. compression bar 8. piston 9. oil inlet hole 10. top briquettings in figure
Embodiment
By reference to the accompanying drawings the utility model is further described now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with the utility model.
As Fig. 1, locking nut used when a kind of hot environment lower flange shown in Fig. 2 connects, after being connected with the bolt 5 of fastening flange 4, the fastening flange 4 by hydraulic elongator stretching pretension bolt 5, this hydraulic elongator comprises oil cylinder 6, the piston 8 being slidably matched with oil cylinder 6 inwalls, ear end face at oil cylinder 6 offers the oil inlet hole 9 being communicated with in piston 8 ear end face cavitys, described oil cylinder 6 front inner wall have internal thread segment, the front-end face of piston 8 is provided with by piston 8 and moves and the top briquetting 10 of pushing ahead, top briquetting 10 and oil cylinder 6 inwall Spielpassung, at top briquetting 10, be circumferentially evenly equipped with six axially extended compression bars 7.
Locking nut, comprise thread bush 1 and thrust ring 2, described thread bush 1 has the internal thread being connected with bolt 5, the outside thread being connected with thrust ring 2, the outside thread of thread bush 1 connects the oil cylinder 6 of hydraulic elongator when stretching simultaneously, offers circumferentially six uniform axially directed holes 3 that are slidably matched with above-mentioned compression bar 7 on thread bush 1.
Using process is summarized as follows: bolt 5 is through flange 4, bolt 5 front ends expose, first thread bush 1 bolt 5 of screwing on is adjacent to flange 4, then thrust ring 2 is connected with thread bush 1, be adjacent to equally flange 4, the internal thread segment of the oil cylinder of hydraulic elongator 6 is connected with the outside thread of thread bush 1, six compression bars 7 insert in each self-corresponding axially directed hole 3, after connection, high pressure oil is passed in the cavity on piston 8 right sides from oil inlet hole 9, thereby promoting piston 8 moves, piston 8 and then briquetting 10 reaches of promotion top, make compression bar 7 vertically pilot hole 3 move, final top is pressed on the end face of flange 4, effect due to reaction force, promoting oil cylinder 6 moves right, the oil cylinder 6 being threaded connection drives thread bush 1 and bolt 5 also to stretch and pretension bolt 5 to the right simultaneously, after stretching puts in place, thrust ring 2 is tightened and locked to flange 4 directions, by oil inlet hole 9 venting oil pressure, oil cylinder 6 is oppositely exited, take out compression bar 7, top briquetting 10, complete tightening of bolt 5 fixing.
The utility model is simple in structure, easy to use, owing to there is no Sealing in this locking nut, can bear the use under higher temperature environment, and mounting or dismounting are convenient, there will not be and fill only non-disconnectable situation.
Above-mentioned mode of execution is only explanation technical conceive of the present utility model and feature; its object is to allow person skilled in the art can understand content of the present utility model and be implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to the utility model Spirit Essence change or modify, and all should be encompassed in protection domain of the present utility model.
Claims (2)
1. a hot environment lower flange connects locking nut used, after being connected with the bolt (5) of fastening flange (4), the fastening flange (4) by hydraulic elongator stretching pretension bolt (5), comprise thread bush (1) and thrust ring (2), it is characterized in that: described thread bush (1) has the internal thread being connected with bolt (5), the outside thread being connected with thrust ring (2), described outside thread connects the oil cylinder (6) of hydraulic elongator when stretching simultaneously, on thread bush (1), offer the axially directed hole (3) that circumferentially uniform at least three compression bars (7) with hydraulic elongator are slidably matched.
2. hot environment lower flange according to claim 1 connects locking nut used, it is characterized in that: described axially directed hole (3) quantity is six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420397931.5U CN204003900U (en) | 2014-07-17 | 2014-07-17 | Hot environment lower flange connects locking nut used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420397931.5U CN204003900U (en) | 2014-07-17 | 2014-07-17 | Hot environment lower flange connects locking nut used |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204003900U true CN204003900U (en) | 2014-12-10 |
Family
ID=52043907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420397931.5U Expired - Fee Related CN204003900U (en) | 2014-07-17 | 2014-07-17 | Hot environment lower flange connects locking nut used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204003900U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654106A (en) * | 2018-12-25 | 2019-04-19 | 陕西东方航空仪表有限责任公司 | A kind of nut and the method for accurately controlling bolt pretightening |
-
2014
- 2014-07-17 CN CN201420397931.5U patent/CN204003900U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654106A (en) * | 2018-12-25 | 2019-04-19 | 陕西东方航空仪表有限责任公司 | A kind of nut and the method for accurately controlling bolt pretightening |
| CN109654106B (en) * | 2018-12-25 | 2023-12-12 | 陕西东方航空仪表有限责任公司 | Method for accurately controlling bolt pretightening force |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208330961U (en) | Combined self stop nut | |
| CN204003900U (en) | Hot environment lower flange connects locking nut used | |
| CN205799410U (en) | A kind of circlip for shaft dismantling device | |
| CN204299802U (en) | Hub of wind power generator and main shaft jockey | |
| CN202769122U (en) | Bending machine hydraulic pressure leakage-proof flange plate | |
| CN201786642U (en) | Hydraulic bonnet for diaphragm pump | |
| CN104006054A (en) | Multifunctional u-shaped adjusting bolt | |
| CN204025284U (en) | A kind of adapter sleeve connecting bolt | |
| CN203993061U (en) | The tools for bolts ' pretension hydraulic elongator that short thread segments exposes | |
| CN204646944U (en) | Hexagonal cone pad 3 locking riveting nuts | |
| CN203856910U (en) | Hydraulic locking disc | |
| CN203051413U (en) | Sealing bolt | |
| CN203051373U (en) | Sealing type countersunk screw bolt | |
| CN203009524U (en) | Combined screw bolt | |
| CN204136007U (en) | The valve seat tool for assembling of valve | |
| CN204546393U (en) | A kind of outer-hexagonal bolt measuring moment coupling arrangement | |
| CN204253788U (en) | Novel compositions gear | |
| CN204213145U (en) | Dish, axial workpiece connect the bolt kit adopted | |
| CN105508769A (en) | Sealing flange | |
| CN203906490U (en) | Multifunctional u-shaped adjusting bolt | |
| CN202484028U (en) | Hexagon socket screw with gasket | |
| CN203202269U (en) | Ball valve convenient to install, detach and maintain | |
| CN201672054U (en) | Connecting structure for front and rear covers of oil cylinder | |
| CN202769119U (en) | Bending machine high-sealing flange plate | |
| CN203273101U (en) | Flange connection structure of seabed oil conveying pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150717 |
|
| EXPY | Termination of patent right or utility model |