CN205380611U - Overload inefficacy type wrench handle - Google Patents
Overload inefficacy type wrench handle Download PDFInfo
- Publication number
- CN205380611U CN205380611U CN201520943673.0U CN201520943673U CN205380611U CN 205380611 U CN205380611 U CN 205380611U CN 201520943673 U CN201520943673 U CN 201520943673U CN 205380611 U CN205380611 U CN 205380611U
- Authority
- CN
- China
- Prior art keywords
- steel ball
- handle
- union joint
- snib
- spanner
- 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
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model discloses an overload inefficacy type wrench handle. A handle that is used for being connected with the spanner clamping head, has the inefficacy of overload function. the execute component that this handle became invalid be the electro -magnet, because the handle volume is less, the mains voltage that can provide is limited, and spanner tighten the bolts time loading carries on one's shoulder or back biggerly again, therefore this handle utilizes the characteristic that the friction factor is little of steel ball, and the adoption steel ball is fixed a position, has realized the action of the big load part of little voltage driving. The utility model has the advantages that the characteristic of utilizing the low friction factor of steel ball has realized the big load part of little voltage driving, and when the pretightning force applyed as spanner tighten the bolts reached the desirable value, control system sent the signal of telecommunication and gives the electro -magnet, and the electro -magnet thrust augmentation holds fixed cover, makes the steel ball unblock, and the handle can take place small rotation with the connecting piece of spanner clamping head, and uninstallation has in time protected the threaded connection spare can not be too big and impaired because of the loading. The utility model discloses factor of safety is high, and mechanism motion is reliable and stable, effectively the safety of protective bonding spare.
Description
Technical field
This utility model relates to a kind of overload failure type pinch bar, is especially adapted for use in the spanner with invalidation functions and spanner applies the occasion that torque precision requirement is higher.Minor rotation can be occurred to make loading lose efficacy when applying moment of torsion and reaching desirable value under control of the control system.
Background technology
Threaded is one of most widely used connected mode, all has substantial amounts of application in civil equipment and military hardware.The threaded pretension that is required for, pretightning force applying is improper would potentially result in equipment fault, is likely to result in major accident time serious.At present, apply the main reliable experience of suitable pretightning force and use two kinds of methods of torque wrench.The way of dependence experience is widely used in the less demanding occasion of pretightning force, and this way error is relatively big, there is certain potential safety hazard.Controlling suitable pretightning force and mainly use torque wrench, but due to the shortage of technical data, set numerical values recited and still rely on experience during use torque wrench, this just loses the meaning using torque wrench.
When using common wrench to tight a bolt, it is easy to cause applying pretightning force excessive because overexerting and damaged screw connector；When using prevailing torque spanner, apply to send when moment of torsion reaches setting value warning and prompting, but can not unload in time, be also susceptible to the situation causing damaging connector because overexerting.
Threaded applying pretightning force improperly will affect maintenance of works efficiency, increase cost of labor, especially in BDAR both, first-aid repair efficiency reduce would potentially result in bungling the chance of winning a battle, lose the favourable situation in battlefield, cause serious consequence.
Summary of the invention
Can not unload in time when being applied to suitable pretension force value for existing spanner or torque wrench, be easily damaged the problems such as connector, this utility model is by adopting steel ball detent mechanism, electric magnet provides power, utilizes the characteristic of the low friction coefficient of steel ball to achieve the motion of the big load part of low voltage drive.
This utility model overload failure type pinch bar solves its technical problem and be the technical scheme is that this handle is made up of handle housing, union joint, bearing pin, snib, steel ball, fixed cover, back-moving spring and electric magnet etc.；Union joint is used for connecting spanner clamping head, fixed cover is arranged in the locating slot of snib and limits moving axially of snib for fixing steel ball, union joint is connected with handle housing by latch, the rotation of the acting surface close contact restriction union joint of snib and union joint so that pinch bar can apply moment of torsion and tight a bolt.Electric magnet collocation control system, apply to control system when torque value reaches desirable value at spanner to power up to electric magnet, fixed cover makes steel ball free under the effect of Magnet suction, namely snib is axially movable, union joint occurs minor rotation to realize unloading in time under the effect of twisting resistance, effectively prevents from causing that connected piece is damaged because overexerting.
Feature of the present utility model is that the characteristic of the low friction coefficient utilizing steel ball achieves small voltage and drives the motion of big load part, control system of can arranging in pairs or groups realizes Based Intelligent Control wrenching torque and unloads in time when applying moment of torsion reaches desirable value, prevent connected piece impaired, and improve spanner intelligence degree.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this utility model is further illustrated:
Fig. 1 transships failure type pinch bar the first operating mode schematic diagram
Fig. 2 transships failure type pinch bar the second operating mode schematic diagram
Fig. 3 transships failure type pinch bar internal structure schematic diagram
Fig. 4 transships failure type pinch bar schematic appearance
In Fig. 1: 101. union joints, 102. bearing pins, 103. snibs, 104. steel balls, 105. fixed covers, 106. electric magnet, 107. back-moving springs, 108. handle housings.
Detailed description of the invention
Referring to Fig. 1, overload failure type pinch bar is made up of union joint 101, bearing pin 102, snib 103, steel ball 104, fixed cover 105, back-moving spring 107, electric magnet 106 and handle housing 108 etc..
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, union joint 101 is arranged on handle housing 108 by bearing pin 102, is used for connecting Wrench head.There is a circle groove end of snib 103, and when fixed cover 105 is reset spring jack-up, steel ball 104 is fixed in the groove of snib 103 for limiting moving axially of snib 103 by fixed cover 105；The lower surface of the limited rear upper surface of snib 103 and union joint 101 is in close contact, and now union joint 101 is fixed, and handle can apply moment of torsion.When spanner applying torque value reaches desirable value, control system powers up to electric magnet 106, producing magnetic force after electric magnet 106 energising attracts fixed cover 105 to move downward, steel ball 104 is made to free, now snib 103 can move axially, union joint 101 then rotates under the effect applying moment of torsion, turns to till union joint 101 contacts with handle housing 108, namely achieves the minor rotation of handle.
Claims (2)
1., for an overload failure type pinch bar for mounting or dismounting bolt, it is characterized in that: be made up of union joint, bearing pin, snib, steel ball, fixed cover, back-moving spring and electric magnet；Union joint is used for connecting spanner clamping head, fixed cover is arranged in the locating slot of snib and limits moving axially of snib for fixing steel ball, union joint is connected with handlebar by latch, the rotation of the acting surface close contact restriction union joint of snib and union joint so that pinch bar can apply moment of torsion and tight a bolt.
2. overload failure type pinch bar according to claim 1, it is characterized in that: when the solenoid is energized, fixed cover unlocks the fixing of steel ball under the effect of suction so that snib is axially movable, there is minor rotation in union joint, it is achieved unload in time under the effect of screw-down torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520943673.0U CN205380611U (en) | 2015-11-24 | 2015-11-24 | Overload inefficacy type wrench handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520943673.0U CN205380611U (en) | 2015-11-24 | 2015-11-24 | Overload inefficacy type wrench handle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205380611U true CN205380611U (en) | 2016-07-13 |
Family
ID=56338234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520943673.0U Expired - Fee Related CN205380611U (en) | 2015-11-24 | 2015-11-24 | Overload inefficacy type wrench handle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205380611U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678308A (en) * | 2017-02-06 | 2017-05-17 | 江苏大学 | Torque limiting anti-overload device |
| CN106737354A (en) * | 2015-11-24 | 2017-05-31 | 中国人民解放军军械工程学院 | Overload failure type pinch bar |
| CN111300325A (en) * | 2020-04-17 | 2020-06-19 | 王绘娟 | Auxiliary wrench |
-
2015
- 2015-11-24 CN CN201520943673.0U patent/CN205380611U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106737354A (en) * | 2015-11-24 | 2017-05-31 | 中国人民解放军军械工程学院 | Overload failure type pinch bar |
| CN106678308A (en) * | 2017-02-06 | 2017-05-17 | 江苏大学 | Torque limiting anti-overload device |
| CN111300325A (en) * | 2020-04-17 | 2020-06-19 | 王绘娟 | Auxiliary wrench |
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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: 20160713 Termination date: 20181124 |