CN203477001U - Controllable hydraulic self-tightening nut - Google Patents
Controllable hydraulic self-tightening nut Download PDFInfo
- Publication number
- CN203477001U CN203477001U CN201320212772.2U CN201320212772U CN203477001U CN 203477001 U CN203477001 U CN 203477001U CN 201320212772 U CN201320212772 U CN 201320212772U CN 203477001 U CN203477001 U CN 203477001U
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- Prior art keywords
- nut
- oil
- seal circle
- hydraulic self
- easy
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Abstract
This utility model relates to a controllable hydraulic self-tightening nut, which is applicable to the machinery and chemical industry. The controllable hydraulic self-tightening nut comprises a nut body, a sealing ring, a nut base, a nut gasket, an oil inlet-outlet module, an oil releasing control stick, an annular oil chamber, and an oil inlet passageway. In order to solve the defects in the prior art, a hydraulic structure is configured on the nut, which can replace the manual mounting and dismounting nut with the means of injecting high pressure oil, so that the mounting and dismounting are easy and take shorter time, and pretensioning drawing force is uniform and controllable. Furthermore, the controllable hydraulic self-tightening nut is easy for tightening again by pressure injection, and the operation is easy.
Description
Technical field
The utility model relates to a kind of engineering machinery securing means field, is specifically related to a kind of controlled hydraulic that is applied to machinery, chemical industry equipment from jack panel.
Background technique
Nut is one of most popular part in project installation field, through being commonly used in the system fixing and locking that is tightly connected, in machinery, chemical industry, to often carry out the pretension of bolts and nuts, particularly a lot of devices need to move under thermal extremes operating mode, thereby the integrity of the system of being tightly connected and tightness have been proposed to more and more higher requirement.Pretension for the system of being tightly connected is used artificial dismounting at present, not tight labor intensity is large, and easily produce bite and kill, pretightening force is difficult to control simultaneously, and the leakage problem especially causing for elevated-temperature seal connected system bolt creep relaxation is difficult to be resolved.
Summary of the invention
In order to overcome the deficiency in existing nut technology, the utility model provides a kind of controlled hydraulic from jack panel.
The utility model solves the technological scheme that its technical problem adopts: controlled hydraulic comprises that from jack panel nut main body, primary seal circle, secondary seal circle, nut base, nut collar, Returnning spring, cunning of turnover, the operating handle of draining the oil, passage, hold-down ring, annular oil cavity, oil inlet passage, joint form, the cunning connection of operating handle and turnover of draining the oil is placed on into the turnover of oil discharge passage internal control liquefaction liquid, nut main body is connected with the mode of nut base with piston, and joint seals with seal ring simultaneously.
The beneficial effects of the utility model are: hydraulic structure is set on nut, replaces the drawback of former manual handling nut by the mode of injecting high-voltage oil liquid, make easy accessibility, shorten the installation time, prefastening force is evenly controlled simultaneously, and it is tight again, easy to operate to be easy to note pressure.
Accompanying drawing explanation
Fig. 1 is the utility model half sectional view
Fig. 2 is the utility model three-dimension integrally view
Fig. 3 is cunning 3-D view of the utility model turnover
Fig. 4 is the utility model primary seal circle half sectional view
Fig. 5 is the utility model primary seal circle 3-D view
Fig. 6 is the utility model secondary seal circle half sectional view
Fig. 7 is the utility model secondary seal circle 3-D view
In figure: 1. nut main body; 2. secondary seal circle; 3. primary seal circle; 4. nut base; 5. nut collar; 6. Returnning spring; 7. turnover is cunning; 8. the operating handle of draining the oil; 9. passage; 10. hold-down ring; 11. annular oil cavities; 12. oil inlet passages; 13. joints; 14. internal threads.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: shown in accompanying drawing, each numeral is expressed as follows respectively: 1. nut main body; 2. secondary seal circle; 3. primary seal circle; 4. nut base; 5. nut collar; 6. Returnning spring; 7. turnover is cunning; 8. the operating handle of draining the oil; 9. passage; 10. hold-down ring; 11. annular oil cavities; 12. oil inlet passages; 13. joints; 14. internal threads.The utility model is when carrying out tools for bolts ' pretension, first the utility model hydraulic pre-tightening nut apparatus is manually tightened on the bolt that needs pretension, by joint 13, connect external high pressure oil supplying device, high-voltage oil liquid backs down cunning 7 of turnover after oil inlet passage 12, fluid enters annular oil cavity 11, fluid enters jack-up nut main body 1 after oil pocket, the bolt of nut main body 1 together with being screwed in just moves upward, connected system is carried out to effective pretension, when pretightening force reaches, external high pressure oil supplying device stops voltage supply, under the effect of oil pressure and Returnning spring 6, passing in and out cunning 7 reset closes oil discharge passage 9, tools for bolts ' pretension completes.When needs, again note while pressing again pretension, repeat above-mentioned steps pretightening force is reached.Outside in the time need to unloading bolt, the bound pair operating handle 8 of draining the oil applies certain thrust, makes to pass in and out cunning 7 and is moved, and the fluid in annular oil cavity 11 will be discharged by oil inlet passage 12 again by after passing in and out cunning 7, and bolt has unloaded.In loading procedure, 2 pairs of devices of primary seal circle 3 and secondary seal circle seal, and nut collar 5 plays enhanced leaktightness effect again.
Claims (1)
1. controlled hydraulic is from jack panel, it is characterized in that: comprise nut main body (1), secondary seal circle (2), primary seal circle (3), nut base (4), Returnning spring (6), pass in and out cunning (7), the operating handle (8) of draining the oil, passage (9), hold-down ring (10), annular oil cavity (11), oil inlet passage (12), joint (13) forms, nut main body (1) is connected with the mode of nut base (4) with piston, the operating handle (8) of draining the oil is connected with turnover cunning (7) turnover being placed on into oil discharge passage (9) internal control liquefaction liquid, nut main body (1) and nut base (4) primary seal circle (3) and secondary seal circle (2) sealing for piston joint simultaneously, nut base (4) has nut collar (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320212772.2U CN203477001U (en) | 2013-04-23 | 2013-04-23 | Controllable hydraulic self-tightening nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320212772.2U CN203477001U (en) | 2013-04-23 | 2013-04-23 | Controllable hydraulic self-tightening nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203477001U true CN203477001U (en) | 2014-03-12 |
Family
ID=50225337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320212772.2U Expired - Fee Related CN203477001U (en) | 2013-04-23 | 2013-04-23 | Controllable hydraulic self-tightening nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203477001U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763049A (en) * | 2017-11-14 | 2018-03-06 | 上海核工程研究设计院有限公司 | A kind of reactor pressure vessel hydraulic nut |
| CN111120490A (en) * | 2019-12-13 | 2020-05-08 | 扬力集团股份有限公司 | Hydraulic pre-tightening nut for combined machine body of press machine |
| CN111981003A (en) * | 2020-08-19 | 2020-11-24 | 徐燕 | Novel anti-drop threaded connection rod |
-
2013
- 2013-04-23 CN CN201320212772.2U patent/CN203477001U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763049A (en) * | 2017-11-14 | 2018-03-06 | 上海核工程研究设计院有限公司 | A kind of reactor pressure vessel hydraulic nut |
| CN111120490A (en) * | 2019-12-13 | 2020-05-08 | 扬力集团股份有限公司 | Hydraulic pre-tightening nut for combined machine body of press machine |
| CN111981003A (en) * | 2020-08-19 | 2020-11-24 | 徐燕 | Novel anti-drop threaded connection rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Li Peng Document name: Notification to Pay the Fees |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20150423 |
|
| EXPY | Termination of patent right or utility model | ||
| DD01 | Delivery of document by public notice |
Addressee: Li Peng Document name: Notification of Termination of Patent Right |