CN202811774U - Thread positioning lock structure - Google Patents
Thread positioning lock structure Download PDFInfo
- Publication number
- CN202811774U CN202811774U CN 201220499816 CN201220499816U CN202811774U CN 202811774 U CN202811774 U CN 202811774U CN 201220499816 CN201220499816 CN 201220499816 CN 201220499816 U CN201220499816 U CN 201220499816U CN 202811774 U CN202811774 U CN 202811774U
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- opening
- nut
- opening nut
- thread
- hole
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Abstract
The utility model belongs to fastener loose-prevention technique of thread connection, and provides a thread positioning lock structure. The thread positioning lock structure comprises a shaft, an opening nut (2), a bolt (3) and a stopping block (4), wherein the shaft is provided with a thread shaft section, inner threads of the opening nut are in interference fit with outer threads of the opening nut, and an opening of the opening nut (2) is of a through structure from the outer diameter surface of the opening nut to an inner hole of the opening nut. A thread hole and an unthreaded hole are respectively arranged on two sides of the opening of the opening nut (2), and the stopping block (4) is placed inside the opening of the opening nut when the opening nut (2) is arranged. According to the thread positioning lock structure, the condition of thread connection fastening lock is improved, and loose-prevention performance is greatly improved. Compared with a traditional structure and a traditional method, the thread positioning lock structure enables the condition of thread connection fastening lock to be improved, and greatly improves the loose-prevention performance.
Description
Technical field
The fastener locking that the utility model belongs to scyewed joint takes off structure-design technique, proposes a kind of screw thread positioning and locking structure.
Background technique
The anti-loose method of scyewed joint can be divided three classes: one, rely on the residue pretightening force of fastening piece locking, require the scyewed joint fastening piece to have enough residue pretightening forces; Two, rely on the magnitude of interference between the matching thread locking, require to have between the matching thread suitable magnitude of interference; Three, rely on various special anti-loose structures locking, these special anti-loose structures comprise: double nut, opening nut, slotted nut, binding nut, metal latch jack panel, wedging screw-threaded coupling nut, nylon insert nut, spring washer, Toothed Lock Washer, lock washer, duplex stop back-up ring, stick up shape packing ring, conical surface lock washer, cotter pin, steel wire serial connection, the riveted joint of punching point, coating adhesive etc.
In specific transmission shaft structure, need to adopt the axially locating threaded fastener to use as the axially locating part, the adjustment (see figure 4) that is used for bearing location, fixing and axial clearance, after requiring this axially locating threaded fastener to be in place, in the situation that does not have the end face pretightening force, the scyewed joint between itself and the axle can realize fastening locking.In traditional structure, usually adopt double nuts structure or opening nut structure as the axially locating part, because the restriction that adjust to require is installed, connecting between axially locating part and the axle all is to adopt Spielpassung.For double nuts structure, the realization of the fastening locking of its scyewed joint, by nut inner thread between two nuts and that tight power causes and the frictional force between the outside thread on the axle, double nuts structure requires to have relatively large axial space, its fastening coupling mechanism force less, the installation location is adjusted more time-consuming, so it is multiplex less in physical dimension, installing space is more abundant, Location accuracy and the less demanding situation of fastening coupling mechanism force thereof; For the opening nut structure; the realization of the fastening locking of its scyewed joint; by the Screw that is installed on the opening nut opening to be clamped; thereby the mode that causes connection screw thread interference fastening force is reached; in this case; the deformation resistance that the opening nut tightens up opening is opposite with the fastening force direction of desired locking screw; the Screw that clamps opening should overcome the deformation resistance of opening nut; the fastening force of locking screw is provided again; also be subject to the restriction of opening nut structure size; this often the fault that gets loose can occur at work just so that the mode of the fastening locking of scyewed joint between this positioning threads fastening piece and the transmission shaft is very insecure.
The model utility content
The purpose of this utility model namely produces thus, proposes a kind of screw thread positioning and locking structure.
The utility model takes following technical proposals to finish its invention task:
A kind of screw thread positioning and locking structure, described positioning and locking structure includes: have the axle of threaded shaft section, opening nut, bolt and block; Be interference fit between the internal thread of described opening nut and the outside thread of axle; The opening of described opening nut is by the outer diametric plane of the opening nut communicating structure to the opening nut inner hole, all has the hole in the both sides of the described opening of opening nut, and the hole that is positioned at the opening both sides of opening nut is connectivity structure; Wherein, the hole that is positioned at opening one side of opening nut is tapped hole, and the hole that is positioned at the opening opposite side of opening nut is unthreaded hole; Described block is when the construction opening nut, is positioned at the described opening of opening nut, when screwing in the tapped hole of opening nut at bolt, stops that bolt moves ahead, the structure that opening nut opening is strutted.
A kind of screw thread positioning and locking structure that the utility model proposes is compared with conventional construction and method, and the situation of the fastening locking of its scyewed joint is improved, and has greatly improved anti-loose ability.
Description of drawings
Fig. 1 is the schematic representation of the utility model locking-positioning structure.
Schematic representation when Fig. 2 is the installation of the utility model opening nut.
Fig. 3 is the utility model opening nut rear schematic representation when fastening that is in place.
Fig. 4, Fig. 5 are that the utility model locking-positioning structure is used the example signal.
Fig. 6 is x partial enlarged drawing among Fig. 5.
Among the figure: 1, transmission shaft, 2, the opening nut, 3, screw, 4, block.
Embodiment
The embodiment who provides by reference to the accompanying drawings is illustrated the utility model:
As shown in Figure 1, a kind of screw thread positioning and locking structure is used for the parts of installing on the transmission shaft 1 are carried out axially locating; Described positioning and locking structure includes: have the transmission shaft 1 of threaded shaft section, opening nut 2, bolt 3 and block 4; It is interference fit between the outside thread of the internal thread of described opening nut and transmission shaft 1; The opening of described opening nut 2 is by the outer diametric plane of the opening nut communicating structure to the opening nut inner hole, all has the hole in the both sides of the described opening of opening nut 2, and the hole that is positioned at the opening both sides of opening nut is connectivity structure; Wherein, the hole that is positioned at opening one side of opening nut is tapped hole, and the hole that is positioned at the opening opposite side of opening nut is unthreaded hole; Described bolt 3 cooperates with described tapped hole, described block 4, in order to when the thread section construction opening nut 2 of transmission shaft, opening nut opening is strutted in right amount; As shown in Figure 2, after the opening nut was in place, described bolt 3 cooperated with described unthreaded hole, described tapped hole, further with the opening fastening nuts on the thread section of transmission shaft; Described block 4 is positioned at the described opening of opening nut when construction opening nut 2, when screwing in the tapped hole of opening nut at bolt, rely on block to stopping that bolt moves ahead, the opening of opening nut is strutted in right amount.
The installation method of described screw thread positioning and locking structure is at the thread section construction opening nut 2 of transmission shaft 1, to be used for the parts of installing on the transmission shaft 1 are carried out axially locating; The internal thread that described opening nut 2 has and the outside thread of axle are interference fit; As shown in Figure 1, described block 4 is put into the opening of opening nut, bolt 3 is screwed in the tapped hole that the opening nut has, make its front end hold out against block 4, bolt continues screw-in opening nut opening is strutted in right amount, make the scyewed joint between the helical thread portion of opening nut 2 and described transmission shaft become Spielpassung by interference fit, then opening nut 2 is installed on the transmission shaft; After opening nut 2 is installed to desired location, oppositely screw out bolt, and the block of opening nut opening is taken out, at this moment, the scyewed joint between the helical thread portion of opening nut and described transmission shaft is interference fit; Bolt 3 is screwed in from the unthreaded hole that the opening nut has again, make the tapped hole screw-thread fit of described bolt 3 and opening nut 2, by the fastening force of bolt to the opening nut, further the reinforced cut-out nut cooperates with the screw threads for fastening of transmission shaft.
By in transmission shaft 1 course of working concerning the control adjustment of pitch diameter of external thread size (with respect to standard thread, suitably increase the size of pitch diameter of external thread), or by in opening nut 2 course of working concerning the control adjustment of thread pitch diameter size (with respect to standard thread, suitably reduce the size of thread pitch diameter), can both reach the control of screw thread magnitude of interference between the two.It is identical with the fastening force direction of desired locking screw to make opening nut 2 tighten up the deformation resistance of opening in connect cooperating, even in the situation of mounting screw 3 not, also can realize the fastening locking that opening nut 2 connects with transmission shaft 1 helical thread portion, the screw 3 of installation has played the effect of strengthening this screw threads for fastening locking.
In the process of screw thread processing, the control adjustment of pitch diameter of external thread size to be compared with the control adjustment to the thread pitch diameter size, the former realization will be easy to many, so the method that recommend adoption of the present invention is adjusted the pitch diameter of external thread size Control.
Claims (1)
1. screw thread positioning and locking structure, it is characterized in that: described positioning and locking structure includes: have the axle of threaded shaft section, opening nut (2), bolt (3) and block (4); Be interference fit between the internal thread of described opening nut and the outside thread of axle; The opening of described opening nut (2) is by the outer diametric plane of the opening nut communicating structure to the opening nut inner hole, all has the hole in the both sides of the described opening of opening nut (2), and the hole that is positioned at the opening both sides of opening nut is connectivity structure; Wherein, the hole that is positioned at opening one side of opening nut is tapped hole, and the hole that is positioned at the opening opposite side of opening nut is unthreaded hole; Described block (4) is when construction opening nut (2), is positioned at the described opening of opening nut, when screwing in the tapped hole of opening nut at bolt (3), stops that bolt (3) moves ahead, the structure that opening nut (2) opening is strutted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220499816 CN202811774U (en) | 2012-09-28 | 2012-09-28 | Thread positioning lock structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220499816 CN202811774U (en) | 2012-09-28 | 2012-09-28 | Thread positioning lock structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202811774U true CN202811774U (en) | 2013-03-20 |
Family
ID=47870653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220499816 Expired - Lifetime CN202811774U (en) | 2012-09-28 | 2012-09-28 | Thread positioning lock structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202811774U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852952A (en) * | 2012-09-28 | 2013-01-02 | 河南柴油机重工有限责任公司 | Thread positioning locking mechanism and mounting method |
| CN106976358A (en) * | 2017-05-24 | 2017-07-25 | 北京航天数控系统有限公司 | The rigid direct-connected wheel train structure of a kind of axle and transmission system |
| CN107939646A (en) * | 2017-07-11 | 2018-04-20 | 浙江巨霸焊接设备制造有限公司 | A kind of crankshaft installed structure of oilless air compressor |
-
2012
- 2012-09-28 CN CN 201220499816 patent/CN202811774U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852952A (en) * | 2012-09-28 | 2013-01-02 | 河南柴油机重工有限责任公司 | Thread positioning locking mechanism and mounting method |
| CN106976358A (en) * | 2017-05-24 | 2017-07-25 | 北京航天数控系统有限公司 | The rigid direct-connected wheel train structure of a kind of axle and transmission system |
| CN107939646A (en) * | 2017-07-11 | 2018-04-20 | 浙江巨霸焊接设备制造有限公司 | A kind of crankshaft installed structure of oilless air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130320 Effective date of abandoning: 20140604 |
|
| RGAV | Abandon patent right to avoid regrant |