CN106870541A - A kind of combination nut - Google Patents
A kind of combination nut Download PDFInfo
- Publication number
- CN106870541A CN106870541A CN201710248088.2A CN201710248088A CN106870541A CN 106870541 A CN106870541 A CN 106870541A CN 201710248088 A CN201710248088 A CN 201710248088A CN 106870541 A CN106870541 A CN 106870541A
- Authority
- CN
- China
- Prior art keywords
- hole
- piston
- minor thread
- cylinder
- stairstepping
- 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.)
- Pending
Links
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009738 saturating Methods 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
- F16B37/00—Nuts or like thread-engaging members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A kind of combination nut, its nut body is made up of oil cylinder and piston.The cylinder bore is stairstepping through hole, and oil groove is provided with the cascaded surface of through hole, and sealing ring is respectively provided on two sides with up and down in oil groove；The piston is the stairstepping cylinder matched with cylinder bore, and its jackshaft is axially arranged with multiple and penetrates minor thread hole, is axially arranged between screwed hole and minor thread hole and penetrates oilhole to screwed hole is provided with, in screwed hole surrounding.Be respectively equipped with minor thread hole pushing tow bolt in the multiple penetrating.This combination nut had both had the advantages that quick, uniform, accurate pretension large-sized bolt, and had the advantages that pretension is not required to long term seal pressurize and special pre- clamping tool, convenient disassembly.
Description
Technical field
The present invention relates to a kind of combination nut, belong to nut manufacture field.
Background technology
Large-scale nut used by current pretension large-sized bolt mainly has three kinds：One kind be common large-scale nut, its simple structure,
But pretension is bothered, it is necessary to could be by its pretension by special pre- clamping tool；Second is hydraulic nut, and its pretension speed is fast and equal
It is even, but seal request is high, and permanent seal pressurize is difficult；The third is pushing tow nut, and the common pre- clamping tool of its application just can be by its essence
True pretension, and be difficult to loosen, but pretension speed is slow, dismantles more difficult.
The content of the invention
For the deficiency that existing three kinds of large-scale nuts are individually present, the present invention provides a kind of combination nut, including nut sheet
Body, the nut body is made up of oil cylinder and piston, it is characterised in that：The cylinder bore is stairstepping through hole, in stairstepping
The cascaded surface of through hole is provided with oil groove；It is axially arranged with screwed hole on the inside of the piston, multiple is axially arranged with the surrounding of piston
Penetrate minor thread hole, screwed hole with penetrate minor thread hole between be axially arranged with the oilhole that is communicated with oil groove, penetrating minor thread
Multiple circular holes are radially provided with the outside of hole on periphery, be respectively equipped with minor thread hole pushing tow bolt in described penetrating.
The oil groove is respectively provided on two sides with sealing ring up and down.
The piston is the stairstepping cylinder matched with cylinder bore.
The top of the pushing tow bolt is in contact with the pad located at cylinder upper end face.
Beneficial effects of the present invention：Both had that hydraulic nut pretension speed is fast, pretension is uniformly excellent
Point, and accurate with pushing tow nut pretension, just can be by the advantage of large-sized bolt pretension, and to liquid without special pre- clamping tool
Means of press seals is no longer required for long-term holding, and dismounting is again easy.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the top view of Fig. 1.
In figure：1. oil cylinder, 2. piston, 11. endoporus, 12. oil grooves, 13. pads, 14. sealing rings, 21. screwed holes, 22. wear
Saturating minor thread hole, 23. oilholes, 24. circular holes, 25. pushing tow bolts.
Specific embodiment：
As depicted in figs. 1 and 2, the invention provides a kind of combination nut, including nut body, the nut body is by oil cylinder 1
Constituted with piston 2.The endoporus 11 of the oil cylinder 1 is stairstepping through hole, and oil groove 12 is provided with the cascaded surface of stairstepping through hole,
Oil groove is respectively provided on two sides with sealing ring 14 about 12；The piston 2 is the stairstepping cylinder matched with the endoporus 11 of oil cylinder 1,
Screwed hole 21 is axially arranged with the middle of stairstepping cylinder, being axially arranged with multiple in stairstepping cylinder surrounding penetrates minor thread hole
22, screwed hole 21 with penetrate minor thread 22 between be axially arranged with the oilhole 23 that is communicated with oil groove 12, penetrating minor thread hole 22
Multiple circular holes 24 are radially provided with the periphery of outside.Pushing tow bolt 25 is respectively equipped with minor thread hole 22 in the multiple penetrating,
The top of pushing tow bolt 25 is in contact with the pad 13 located at the upper surface of oil cylinder 1.
Claims (4)
1. a kind of combination nut, including nut body, the nut body is made up of oil cylinder and piston, it is characterised in that：It is described
Cylinder bore is stairstepping through hole, and oil groove is provided with the cascaded surface of stairstepping through hole；It is axially arranged with spiral shell on the inside of the piston
Pit, is axially arranged with multiple and penetrates minor thread hole in the surrounding of piston, is axially arranged with screwed hole and between penetrating minor thread hole
The oilhole communicated with oil groove, multiple circular holes are radially provided with penetrating on periphery on the outside of minor thread hole, minor thread is penetrated described
Pushing tow bolt is respectively equipped with hole.
2. combination nut according to claim 1, it is characterised in that：The oil groove is respectively provided on two sides with sealing up and down
Circle.
3. combination nut according to claim 1, it is characterised in that：The piston is the stairstepping matched with cylinder bore
Cylinder.
4. combination nut according to claim 1, it is characterised in that：The top of the pushing tow bolt be located at cylinder upper end
The pad in face is in contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710248088.2A CN106870541A (en) | 2017-04-17 | 2017-04-17 | A kind of combination nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710248088.2A CN106870541A (en) | 2017-04-17 | 2017-04-17 | A kind of combination nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106870541A true CN106870541A (en) | 2017-06-20 |
Family
ID=59162289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710248088.2A Pending CN106870541A (en) | 2017-04-17 | 2017-04-17 | A kind of combination nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106870541A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1584158A (en) * | 1976-05-13 | 1981-02-04 | Sulzer Ag | Tensioning device for tensioning a rod |
| JPH03103610A (en) * | 1989-09-18 | 1991-04-30 | Toshiba Corp | Apparatus for tightening axial force bolt |
| CN2290441Y (en) * | 1997-04-28 | 1998-09-09 | 通州市东亚液压工具有限责任公司 | Hydraulic bolt tightening device |
| JP2972743B1 (en) * | 1998-09-10 | 1999-11-08 | 川崎重工業株式会社 | Nut fastening device and fastening method |
| CN201100299Y (en) * | 2007-02-09 | 2008-08-13 | 南通高盛机械制造有限公司 | Multi-stage pushing fastener |
| CN201970082U (en) * | 2011-01-25 | 2011-09-14 | 江苏拓盛重工机械有限公司 | Fixed-type hydraulic pre-tightening device for bolt |
| CN202639815U (en) * | 2012-07-24 | 2013-01-02 | 中国有色(沈阳)泵业有限公司 | Hydraulic tightening and detaching tool for crosshead nut |
| CN206918012U (en) * | 2017-04-17 | 2018-01-23 | 江苏智拓机械有限公司 | A kind of combination nut |
-
2017
- 2017-04-17 CN CN201710248088.2A patent/CN106870541A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1584158A (en) * | 1976-05-13 | 1981-02-04 | Sulzer Ag | Tensioning device for tensioning a rod |
| JPH03103610A (en) * | 1989-09-18 | 1991-04-30 | Toshiba Corp | Apparatus for tightening axial force bolt |
| CN2290441Y (en) * | 1997-04-28 | 1998-09-09 | 通州市东亚液压工具有限责任公司 | Hydraulic bolt tightening device |
| JP2972743B1 (en) * | 1998-09-10 | 1999-11-08 | 川崎重工業株式会社 | Nut fastening device and fastening method |
| CN201100299Y (en) * | 2007-02-09 | 2008-08-13 | 南通高盛机械制造有限公司 | Multi-stage pushing fastener |
| CN201970082U (en) * | 2011-01-25 | 2011-09-14 | 江苏拓盛重工机械有限公司 | Fixed-type hydraulic pre-tightening device for bolt |
| CN202639815U (en) * | 2012-07-24 | 2013-01-02 | 中国有色(沈阳)泵业有限公司 | Hydraulic tightening and detaching tool for crosshead nut |
| CN206918012U (en) * | 2017-04-17 | 2018-01-23 | 江苏智拓机械有限公司 | A kind of combination nut |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170620 |