CN205715164U - Self-locking type check bolt assembly - Google Patents
Self-locking type check bolt assembly Download PDFInfo
- Publication number
- CN205715164U CN205715164U CN201620299446.3U CN201620299446U CN205715164U CN 205715164 U CN205715164 U CN 205715164U CN 201620299446 U CN201620299446 U CN 201620299446U CN 205715164 U CN205715164 U CN 205715164U
- Authority
- CN
- China
- Prior art keywords
- nut
- screw rod
- handed
- handed nut
- 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.)
- Expired - Fee Related
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- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model discloses a kind of self-locking type check bolt assembly, solve prior art and can not be effectively prevented between nut and screw rod the initial problem loosened.This utility model structurally uses thin footpath, outer end left hand thread, the stepped screw rod of inner particle size right-handed thread, and accordingly using thickening right-handed nut as attaching nut, common left-handed nut is as locking nut.Utilize this principle in opposite direction to axially-movable during nut rotating Vortex matched, it is achieved two mutual lockings of nut, it is ensured that nut can not rotate, and effectively prevents bolt looseness, the most initially loosens with being connected between screw rod.Simple and reliable for structure, only need common tool conveniently to load and unload.
Description
Technical field
This utility model belongs to connection member field.
Background technology
At present for the connection member by big load working condition, typically use outside attaching nut, install lock-nut of blooming additional, wear the anti-loose method of lock pin the most thereon.But when practical set, after attaching nut tightens, the lead to the hole site (or angle) supplying lock pin to pass got out on screw rod just secures, screw on the most again lock-nut of blooming, when reaching preferable pretension between the two nut (attaching nut and lock-nut of blooming), lock pin typically can not pierce into through hole by chance.If the angle of both differences is very big, lock pin to be met can pass through hole, and lock-nut of blooming need to continue to tighten the biggest angle.But pretightning force and moment will increase a lot, even can not rotate to ideal position.At this moment can only gradually unclamp lock-nut of blooming, by reducing the pretightning force between the two nut and moment, meet lock pin and can pass through hole.Further, bloom the embedded groove of lock-nut and wear and there is fit-up gap between pin.Therefore the continuation after this method can only prevent the two nut loosening to a certain extent loosens, but can not be effectively prevented the initial of them to loosen, and for the parts by big load working condition, only initial the loosening of nut will bring the biggest dynamic load or noise to parts or even whole system.Cause the biggest accident potential.
Summary of the invention
The initial problem loosened can not be effectively prevented between nut and screw rod in order to solve prior art, the invention provides a kind of self-locking type check bolt assembly, be mainly made up of following sections: stairstepping screw rod 6, left-handed nut 5 and right-handed nut 3.
Stairstepping screw rod 6 is the coaxial diameter left hand thread screw rod less than described right-handed thread screw rod that is connected on the basis of right-handed thread screw rod；Right-handed thread screw rod in stairstepping screw rod 6 is threadeded with right-handed nut 3 with fixing connector 1,2；Left hand thread screw rod in stairstepping screw rod 6 is threadeded with left-handed nut 5；Spring check washer 4 it is provided with between left-handed nut 5 and right-handed nut 3.
Wherein, the thread turns of right-handed nut 3 preferably greater than right handed screw thread turns is to ensure there is the threaded engagement of the abundant number of turns to ensure bonding strength between right-handed nut 3 and stairstepping screw rod 6.
The beneficial effects of the utility model:
1, due in this utility model the axially-movable direction of right-handed nut and left-handed nut be contrary, from principle analyze understand its can be effectively prevented bolt looseness, the most initially loosen.
2, in this utility model, whole parts machinings are simple.
3, common tool is used to load and unload easily.
Accompanying drawing explanation
Fig. 1 is this utility model schematic diagram.
Fig. 2 assumes to loosen situation 1: screw rod is motionless, loosens because two nuts rotate the schematic diagram produced.
It is motionless that Fig. 3 assumes to loosen 2: two nuts of situation, loosens because screw rod rotates the schematic diagram produced.
Detailed description of the invention
Embodiment 1
As it is shown in figure 1, a kind of self-locking type check bolt assembly, mainly it is made up of following sections: stairstepping screw rod 6, left-handed nut 5 and right-handed nut 3.Stairstepping screw rod 6 is the coaxial diameter left hand thread screw rod less than described right-handed thread screw rod that is connected on the basis of right-handed thread screw rod；Right-handed thread screw rod in stairstepping screw rod 6 is threadeded with right-handed nut 3 with fixing connector 1,7；Left hand thread screw rod in stairstepping screw rod 6 is threadeded with left-handed nut 5；Spring check washer 4 it is provided with between left-handed nut 5 and right-handed nut 3.
Assembling process: first pass through pad 2,8 with right-handed nut 3 and stairstepping screw rod 6 and two connectors 1,7 are tightened and reaches the pretightning force of requirement.Then proceed to block right-handed nut 3(with instrument and keep the pretightning force between right-handed nut and connector), left-handed nut 5 and spring check washer 4 be installed, and and right-handed nut between locking reach the pretightning force of requirement.
Embodiment 2
The present embodiment is with the difference of embodiment 1: right-handed nut 3 preferably thickeies right-handed nut, so that having the threaded engagement of the abundant number of turns between right-handed nut 3 and stairstepping screw rod 6 to ensure bonding strength.
Locking principle of the present utility model is as follows:
Force right-handed nut 3(as shown in Figure 2 with moment of face) rotate and the most motionless stairstepping screw rod 6 produce axially to the right.Because the moment of friction that the pretightning force between right-handed nut 3 and left-handed nut 5 produces, right-handed nut 3 to do rotating Vortex with left-handed nut 5.And now left-handed nut 5 to produce and is axially moved to the left.Two axial directions of motion of nut just the most relatively, are automatically obtained locking mutually, it is ensured that will not loosen because nut rotates to produce when stairstepping screw rod 6 is motionless.
Stairstepping screw rod 6(is forced as shown in Figure 3 with moment of face) rotate, the right-handed nut 3 forcing stairstepping screw rod 6 the most motionless is produced and is axially moved to the left by the right-handed thread part of stairstepping screw rod 6.And now the left-handed nut 5 forcing stairstepping screw rod 6 the most motionless is produced axially to the right by stairstepping screw rod 6 left-handed threaded portion.I.e. screw rod to rotate and to loosen the while of will making stairstepping screw rod 6 itself to contrary both direction axially-movable, and this is impossible.Therefore can ensure that will not produce loosening because stairstepping screw rod 6 rotates when two nuts are motionless.
The possible loosening situation of this bolt assembly is that left-handed nut 5 oneself loosens.Structure shows, connector is all undertaken by right-handed nut 3 and stairstepping screw rod 6 to all load of bolt.Therefore the stress of left-handed nut 5 is less than the stress of right-handed nut 3 far away and Impact direction is single, as long as the pretightning force between two nuts reaches requirement, can effectively prevent left-handed nut 5 oneself from loosening with common spring check washer 4.
Claims (2)
1. a self-locking type check bolt assembly, it is characterised in that be mainly made up of stairstepping screw rod (6), left-handed nut (5) and right-handed nut (3)；Stairstepping screw rod (6) is the coaxial diameter left hand thread screw rod less than described right-handed thread screw rod that is connected on the basis of right-handed thread screw rod；Right-handed thread screw rod in stairstepping screw rod (6) is threadeded with right-handed nut (3) with fixing connector (1,7)；Left hand thread screw rod in stairstepping screw rod (6) is threadeded with left-handed nut (5)；Spring relaxation pad (4) it is provided with between left-handed nut (5) and right-handed nut (3).
Self-locking type check bolt assembly the most according to claim 1, it is characterised in that the thread turns of right-handed nut (3) is more than the right-handed thread screw flight number of turns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620299446.3U CN205715164U (en) | 2016-04-12 | 2016-04-12 | Self-locking type check bolt assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620299446.3U CN205715164U (en) | 2016-04-12 | 2016-04-12 | Self-locking type check bolt assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205715164U true CN205715164U (en) | 2016-11-23 |
Family
ID=57310724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620299446.3U Expired - Fee Related CN205715164U (en) | 2016-04-12 | 2016-04-12 | Self-locking type check bolt assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205715164U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143568A (en) * | 2017-04-14 | 2017-09-08 | 廖华勇 | Many reciprocal retaining mechanisms of nut |
| CN109210068A (en) * | 2017-06-29 | 2019-01-15 | 曹卓荣 | Combined anti-loose screw |
| CN110630617A (en) * | 2019-08-28 | 2019-12-31 | 湖北工业大学 | Two-way screw thread locking device |
| WO2020083273A1 (en) * | 2018-10-23 | 2020-04-30 | 卢玉珊 | Anti-loosening, easy-open/close threaded fixing assembly and connecting structure |
| CN111322299A (en) * | 2020-02-28 | 2020-06-23 | 武汉市研华智造环保科技有限公司 | Dedicated bolt assembly on explosion-proof fan |
| CN113623308A (en) * | 2021-09-14 | 2021-11-09 | 北京开合科技有限公司 | Nut anti-loosening method with keyhole lock bolt |
-
2016
- 2016-04-12 CN CN201620299446.3U patent/CN205715164U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143568A (en) * | 2017-04-14 | 2017-09-08 | 廖华勇 | Many reciprocal retaining mechanisms of nut |
| CN109210068A (en) * | 2017-06-29 | 2019-01-15 | 曹卓荣 | Combined anti-loose screw |
| WO2020083273A1 (en) * | 2018-10-23 | 2020-04-30 | 卢玉珊 | Anti-loosening, easy-open/close threaded fixing assembly and connecting structure |
| CN110630617A (en) * | 2019-08-28 | 2019-12-31 | 湖北工业大学 | Two-way screw thread locking device |
| CN111322299A (en) * | 2020-02-28 | 2020-06-23 | 武汉市研华智造环保科技有限公司 | Dedicated bolt assembly on explosion-proof fan |
| CN113623308A (en) * | 2021-09-14 | 2021-11-09 | 北京开合科技有限公司 | Nut anti-loosening method with keyhole lock bolt |
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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 |
Granted publication date: 20161123 Termination date: 20210412 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |