CN101138840A - Double-screw bolt fast-screwing instrument - Google Patents
Double-screw bolt fast-screwing instrument Download PDFInfo
- Publication number
- CN101138840A CN101138840A CNA2007100188684A CN200710018868A CN101138840A CN 101138840 A CN101138840 A CN 101138840A CN A2007100188684 A CNA2007100188684 A CN A2007100188684A CN 200710018868 A CN200710018868 A CN 200710018868A CN 101138840 A CN101138840 A CN 101138840A
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- CN
- China
- Prior art keywords
- shell
- double
- screw bolt
- push rod
- thrust bearing
- 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
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- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
A tool for screwing a stud bolt rapidly includes a shell, a thrust bearing, an ejecting rod and a threaded sleeve, which are placed in the shell from top to down. The thrust bearing is sheathed on the upper end of the ejecting rod. The threaded sheath is arranged on the lower end of the ejecting rod. The shell and the threaded sheath are connected by double square thread. Thus the present invention which uses the little self-locking ability of the double square thread connection to transmit a torque and uses the thrust bearing on the upper end of the ejecting rod to maximally reduce a drive friction so that the tool can be withdrawn from the stud bolt easily.
Description
Technical field
The present invention relates to a kind of instrument that studs is installed, be specifically related to a kind of double-screw bolt fast-screwing instrument.
Background technology
Usually twist studs; all with double nut and tight; with wrench it is screwed into body; and then remove and two tight nuts; removing the process of two also tight nuts takes out of from body or loosening situation through regular meeting's generation studs; and in batch or in the mass-produced mechanical assembling process, this method is because of inefficiency and use inconvenience to adopt.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, provide a kind of and can be screwed into stud light, fast, the double-screw bolt fast-screwing instrument of maximum minimizing gearing friction.
For achieving the above object, the technical solution used in the present invention is: comprise shell and set gradually in the enclosure thrust bearing, push rod and swivel nut from top to bottom, thrust bearing is enclosed within the upper end of push rod, and swivel nut is arranged on the push rod lower end, and shell adopts the double end square thread to be connected with swivel nut.
Also be provided with stop nut between shell of the present invention and the swivel nut and reach fixedly jackscrew; Push rod and shell have the 0.3mm gap in the axial direction; The upper end of shell also offers the square hole that can be connected with external tool.
Because shell of the present invention adopts the double end square thread to be connected with swivel nut, utilize the double end square thread to connect the little characteristic of self-lock ability and transmit moment of torsion; Utilize the thrust bearing of push rod upper end, maximum minimizing gearing friction, thus can withdraw from studs easily.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are described in further detail.
Referring to Fig. 1, the present invention includes shell 1 and be successively set on thrust bearing 2, push rod 3 and swivel nut 4 in the shell 1 from top to bottom, the upper end of shell 1 offers the square hole 9 that can be connected with external tool, thrust bearing 2 is enclosed within the upper end of push rod 3, is put into together in the shell 1, and push rod 3 has the 0.3mm gap in the axial direction with housing, shell 1 adopts the double end square thread to be connected with swivel nut 4, swivel nut 4 is pushed down push rod 3 and thrust bearing 2, uses nut 6 spacing at last, and is fixed with jackscrew 5.
The square hole 9 that the upper end of shell 1 is offered is used to connect pneumatic wrench, the rotation of drive instrument, and the square tenon of also available torque spanner or instruments such as box spanner, extension bar inserts, and applies screw-down torque.
During work, earlier studs 7 is screwed into housing 8, carries out pretension with the present invention again.When being screwed onto studs 7 upper surfaces and push rod 3 lower surfaces and pushing against, studs 7 can be screwed in housing 8, because of shell 1 of the present invention is connected with swivel nut 4 usefulness double end square threads, self-lock ability is very little between the two, and transmission is very flexible.In addition, push rod 3 is at the activity that 0.3mm is axially arranged, and there is thrust bearing 2 its upper end, can reduce gearing friction, and therefore, after the moment of tightening studs 7 was removed, swivel nut 4 and studs 7 connecting threads almost were in free state.During this instrument of backward rotation, just can withdraw from studs 7 easily.When withdrawing from, swivel nut 4 unclamps with shell 1 and is spacing by nut 6, and still on studs 7, do not had axial top power and moment of torsion this moment, and swivel nut 4 skies are enclosed within and are not subjected to any power on the studs 7, continues throw and can withdraw from.
For adapting to the studs of twisting all size, the present invention makes exchangeable part (need only change its lower end thread size gets final product) with swivel nut 4.
Claims (4)
1. double-screw bolt fast-screwing instrument, it is characterized in that: comprise shell (1) and be successively set on shell (1) interior thrust bearing (2), push rod (3) and swivel nut (4) from top to bottom, thrust bearing (2) is enclosed within the upper end of push rod (3), swivel nut (4) is arranged on push rod (3) lower end, and shell (1) adopts the double end square thread to be connected with swivel nut (4).
2. double-screw bolt fast-screwing instrument according to claim 1 is characterized in that: also be provided with stop nut (6) between said shell (1) and the swivel nut (4) and reach fixedly jackscrew (5).
3. double-screw bolt fast-screwing instrument according to claim 1 is characterized in that: said push rod (3) has the 0.3mm gap in the axial direction with shell (1).
4. double-screw bolt fast-screwing instrument according to claim 1 is characterized in that: the upper end of said shell (1) also offers the square hole (9) that can be connected with external tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100188684A CN101138840A (en) | 2007-10-15 | 2007-10-15 | Double-screw bolt fast-screwing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100188684A CN101138840A (en) | 2007-10-15 | 2007-10-15 | Double-screw bolt fast-screwing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101138840A true CN101138840A (en) | 2008-03-12 |
Family
ID=39191031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100188684A Pending CN101138840A (en) | 2007-10-15 | 2007-10-15 | Double-screw bolt fast-screwing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101138840A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107354B (en) * | 2009-12-24 | 2012-11-21 | 北京航天斯达新技术装备公司 | Quick dispatch tightening head for tightening workpieces with threads at two ends thereof |
| CN103331719A (en) * | 2013-07-11 | 2013-10-02 | 烟台冰轮股份有限公司 | Quick screwing sleeve of double-end stud |
| CN116833729A (en) * | 2023-08-07 | 2023-10-03 | 江阴市恒润环锻有限公司 | Device and method for quickly screwing fixed-length stud for wind power variable pitch bearing |
-
2007
- 2007-10-15 CN CNA2007100188684A patent/CN101138840A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107354B (en) * | 2009-12-24 | 2012-11-21 | 北京航天斯达新技术装备公司 | Quick dispatch tightening head for tightening workpieces with threads at two ends thereof |
| CN103331719A (en) * | 2013-07-11 | 2013-10-02 | 烟台冰轮股份有限公司 | Quick screwing sleeve of double-end stud |
| CN116833729A (en) * | 2023-08-07 | 2023-10-03 | 江阴市恒润环锻有限公司 | Device and method for quickly screwing fixed-length stud for wind power variable pitch bearing |
| CN116833729B (en) * | 2023-08-07 | 2023-11-28 | 江阴市恒润环锻有限公司 | Device and method for quickly screwing fixed-length stud for wind power variable pitch bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |