CN2786344Y - Fastening nut - Google Patents
Fastening nut Download PDFInfo
- Publication number
- CN2786344Y CN2786344Y CN 200520038859 CN200520038859U CN2786344Y CN 2786344 Y CN2786344 Y CN 2786344Y CN 200520038859 CN200520038859 CN 200520038859 CN 200520038859 U CN200520038859 U CN 200520038859U CN 2786344 Y CN2786344 Y CN 2786344Y
- Authority
- CN
- China
- Prior art keywords
- screw
- nut
- utility
- small
- screw bolt
- 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
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 2
- 125000006850 spacer group Chemical group 0.000 abstract 3
- 238000000034 method Methods 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model relates to a fastening nut which is matched with a screw bolt. The utility model comprises a body, a small screw and a spacer, wherein a big screw hole matched with the screw bolt is arranged on the body, and small through screw holes are uniformly distributed around the big screw hole. The small screw is arranged on the small screw hole of the body, and the spacer is arranged under the body; blind holes in which metal bars can be inserted are distributed around the body. When in installation, the nut provided with the spacer is firstly screwed up by a simple tool, then the nut is jacked up by a circle of small screws, and then the screw bolt is tightly drawn to reach pretightening effect. Compared with usual screw-heating ways, hydraulic pressure drawing (or twisting) ways, spanner-hammering ways, etc., the big screw bolt which is fastened by the nut of the utility model is not restricted by tightening torque, and the strength is stronger than the screw bolt which is fastened by means of twisting. The utility model only needs man power and usual spanner to reach designed screw bolt pretightening force, so the nut has the advantages of convenience and investment saving.
Description
Technical field
The utility model relates to a kind of tightening nut.
Background technique
Screw, bolt are modal connection fastening pieces, and the diameter of thread is little of one millimeter of less than, arrives hundreds of millimeter even bigger greatly.Most scyewed joint are all wanted pretension, purpose to be to strengthen rigidity, tightness, the anti-loose ability of connection when assembling and are prevented to be subjected to the slip of the Bolt Connection of lateral load.Pretightening force job requirement stressed according to the bolt group and that connect determines.For important scyewed joint, must calculate and control pretightening force.
Usually, being used for the binding thread diameter, to be not more than the torque spanner of the spanner of M30 plain bolt and control pretightening force more common, and the fastening and pretension of king bolt control usually need be by some special method or device.
The method of the fastening general employing of existing king bolt is:
1, hammering+nut corner method
With nut be screwed to be adjacent to coupled after, with the arm of force of sleeve pipe spreading spanner or with trip hammer hammering wrench handle, with the nut required pretightening force of acquisition that rotates a certain angle again.This is not only a kind of locking method of original high labor intensity, and significant limitation is arranged, and limited or screw rod itself is exactly just to be difficult to use the method in a running shaft or the like the occasion as the space.
2, the heating bolt extends method in advance
By heating, make bolt be elongated to desired amount of deformation in advance, fastening nut cools off back bolt shortening and promptly connects pretension again.This is a locking method commonly used during capital construction is installed.But the device that often needing to be unsuitable for dismounting to adjust, because in unloading process, coupled is heated together together with bolt and extends, and uses the naked light heating, can be subjected to the restriction of some occasion; Use electric heating, the structure that makes screw rod is become complicated and increases investment, and, even rare dismounting, such as the screw shaft of ship etc., also also inapplicable heating.
3, hydraulic spanner or hubbing
Use hydraulic wrench or the fastening king bolt of drawbench, both laborsaving, precision is high again.But Hydraulic power tools is expensive, and the screw that varies in size need dispose different spanners, and now in the world hydraulic pressure drawbench is generally only accomplished M160 * 6.If screw is big again, specification is special or quantity seldom, just seem extremely uneconomical for its outfit hydraulic pressure fastened tools specially.
Summary of the invention
The purpose of this utility model is to design a kind of tightening nut, need not use special fastened tools, is not subjected to the effect of screw-down torque, need only use manpower, by the spanner of routine, can reach the nut pretightening force of design code.
For achieving the above object, technical solution of the present utility model is:
A kind of tightening nut cooperates with screw rod; Comprise body, Screw, pad; Wherein, body has the big screw that cooperates with screw rod on it, is evenly equipped with the little screw that runs through around big screw; Screw is installed in the little screw on the described body; Pad is arranged under the body.
Further, be evenly equipped with around the described body for the blind hole of inserting metal bar.
Be provided with rubber seal between described body and the pad, can prevent that foreign matter is stuck between nut and the pad, influence the nut dismounting.
Described body bottom has groove.
Described Screw head is provided with aperture.
The nut that will have pad during assembling earlier screws with simple tools, utilize again one the circle Screw with nut jack-up, pull out tight screw rod, reach the pretension effect of bolt.
The utility model has the advantages that, compare with methods such as normally used heating spiral rod method, hydraulic pressure drawing (or reversing) method, striking wrench, with the fastening big screw rod of nut of the present utility model, be not subjected to the effect of screw-down torque, its intensity is higher than uses the fastening nut of torsional technique, it need only use manpower, by the spanner of routine, can reach the nut pretightening force of design code, have convenient and save the advantage of investment.
Description of drawings
Fig. 1 is a sectional view of the present utility model.
Fig. 2 is the plan view of Fig. 1.
Embodiment
As shown in Figure 1 and Figure 2, tightening nut of the present utility model cooperates with screw rod 5; Comprise body 1, Screw 2, pad 3; Wherein, have the big screw 100 that cooperates with screw rod on the body 1, around big screw 100, be evenly equipped with the little screw 101 that runs through, be evenly equipped with for the blind hole 102 of inserting metal bar around the described body 1; Screw 2 is installed in the little screw 101 on the described body 1; Pad 3 is arranged at body 1 time; Be provided with rubber seal 4 between described body 1 and the pad 3.
Referring to Fig. 1, described body 1 bottom has groove 103, and rubber seal 4 parts are located in this groove 103.Screw 2 heads are with holes 201, and are locking in order to wear iron wire.
The length of Screw 2 must guarantee that the length of its bulb that exposes nut part is 2～3 times of screw rod 5 pre-elongations.
Pad 3 is enclosed within on the screw rod 5, nut body 1 is screwed to pad 3, fastener three is adjacent to.With the gap between clearance gauge inspection nut body 1 and the pad 3; With relatively, stagger, evenly, stage by stage method progressively tightens Screw 2, constantly checks with clearance gauge whether the increase in nut/pad gap consistent therebetween, uses torque spanner stressed evenly to guarantee Screw 2.
When the increasing amount in gap between nut body 1 and the pad 3 equaled the pre-elongation of screw rod 5, fastening work was finished.
The utility model is suitable for the above big nut of M100, in fields such as metallurgy, mine, heavy-duty machine, power station, chemical industry, shipbuildings popularizing prospect is widely arranged, simultaneously seldom for installation amount, the big nut that specification is special, can save expensive special-purpose fastened tools, high economic value is arranged.
Claims (5)
1. a tightening nut cooperates with screw rod; It is characterized in that, comprise,
Body has the big screw that cooperates with screw rod on it, be evenly equipped with the little screw that runs through around big screw;
Screw is installed in the little screw on the described body;
Pad is arranged under the body.
2. tightening nut as claimed in claim 1 is characterized in that, is evenly equipped with for the blind hole of inserting metal bar around the described body.
3. tightening nut as claimed in claim 1 is characterized in that, is provided with rubber seal between described body and the pad.
4. tightening nut as claimed in claim 1 is characterized in that, described body bottom has groove.
5. tightening nut as claimed in claim 1 is characterized in that, described Screw head is provided with aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520038859 CN2786344Y (en) | 2005-01-11 | 2005-01-11 | Fastening nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520038859 CN2786344Y (en) | 2005-01-11 | 2005-01-11 | Fastening nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2786344Y true CN2786344Y (en) | 2006-06-07 |
Family
ID=36774918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520038859 Expired - Fee Related CN2786344Y (en) | 2005-01-11 | 2005-01-11 | Fastening nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2786344Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101109714B (en) * | 2007-08-01 | 2010-09-08 | 北京理工大学 | intrabore mobile device |
| CN102635593A (en) * | 2012-04-17 | 2012-08-15 | 常州轩达液压机电设备有限公司 | Locking/pre-tightening device for oil cylinder lugs |
| CN102635619A (en) * | 2012-04-17 | 2012-08-15 | 常州轩达液压机电设备有限公司 | Pushing tension device |
| CN102913528A (en) * | 2012-09-18 | 2013-02-06 | 樊荣 | Rod-holding type hexagon nut |
| CN104384916A (en) * | 2014-12-01 | 2015-03-04 | 南京工业大学 | conical nut pushing and pre-tightening system |
| CN104482099A (en) * | 2014-11-21 | 2015-04-01 | 重庆隆鑫发动机有限公司 | Damping assembly of split damp |
| CN105805122A (en) * | 2014-12-30 | 2016-07-27 | 上海艾仲机电科技有限公司 | Super bolt |
-
2005
- 2005-01-11 CN CN 200520038859 patent/CN2786344Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101109714B (en) * | 2007-08-01 | 2010-09-08 | 北京理工大学 | intrabore mobile device |
| CN102635593A (en) * | 2012-04-17 | 2012-08-15 | 常州轩达液压机电设备有限公司 | Locking/pre-tightening device for oil cylinder lugs |
| CN102635619A (en) * | 2012-04-17 | 2012-08-15 | 常州轩达液压机电设备有限公司 | Pushing tension device |
| CN102913528A (en) * | 2012-09-18 | 2013-02-06 | 樊荣 | Rod-holding type hexagon nut |
| CN104482099A (en) * | 2014-11-21 | 2015-04-01 | 重庆隆鑫发动机有限公司 | Damping assembly of split damp |
| CN104384916A (en) * | 2014-12-01 | 2015-03-04 | 南京工业大学 | conical nut pushing and pre-tightening system |
| CN104384916B (en) * | 2014-12-01 | 2017-05-31 | 南京工业大学 | A Conical Nut Pushing Pretensioning System |
| CN105805122A (en) * | 2014-12-30 | 2016-07-27 | 上海艾仲机电科技有限公司 | Super bolt |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9321161B2 (en) | Tensioning apparatus | |
| CN2786344Y (en) | Fastening nut | |
| CN111271358A (en) | Fastener with pre-tightening function and mounting and breaking-in method thereof | |
| CN202811768U (en) | Novel riveting nut | |
| CN111120485B (en) | Fastener with double fixing functions and using method thereof | |
| CN207415226U (en) | A kind of oil field Multifunctional small size combination wrench | |
| CN201166034Y (en) | Indent tightening structure stud | |
| CN1712747A (en) | Screwing systems for the fixed connection of at least two elements to each other | |
| CN109571360B (en) | Multi-lug butterfly valve flange expanding tool | |
| CN212192962U (en) | Multipurpose wheel puller for dismounting and mounting motor fan impeller | |
| CN211466165U (en) | Adjustable simple wrench | |
| CN212497570U (en) | Stud assembling and disassembling tool | |
| CN201170241Y (en) | Convex screw-down structure stud | |
| CN212683782U (en) | Disassembling tool | |
| CN210499994U (en) | Special ratchet wheel type solid wrench | |
| CN203019283U (en) | Converter used on impact wrench | |
| CN214723874U (en) | Excavator bucket tooth dismouting frock | |
| CN211136871U (en) | Self-tensioning movement clamp | |
| CN201255166Y (en) | Torsional shear type high-strength bolt for steel structure | |
| CN101574772A (en) | Process for assembling new V-shaped thrusting rod of heavy-duty automobile | |
| CN216343303U (en) | Die forging hammer nut locking structure | |
| CN217860994U (en) | Slidable mold for fastening foundation bolt nut | |
| CN2871113Y (en) | Mechanical large-torsional moment spanner | |
| CN201037498Y (en) | Combined bolt | |
| CN219788181U (en) | Spanner tool for round nut of compressor |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060607 Termination date: 20130111 |