CN210686621U - Outer hoop concentric pressure-equalizing type locknut - Google Patents
Outer hoop concentric pressure-equalizing type locknut Download PDFInfo
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- CN210686621U CN210686621U CN201921461283.4U CN201921461283U CN210686621U CN 210686621 U CN210686621 U CN 210686621U CN 201921461283 U CN201921461283 U CN 201921461283U CN 210686621 U CN210686621 U CN 210686621U
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- nut
- conical
- conical boss
- locknut
- boss
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Abstract
The utility model discloses an outer concentric equalizer locknut of hoop has solved complicated, the poor, easy fracture scheduling problem of reliability of current locknut structure. The technical scheme includes that the nut comprises an outer nut and an inner nut, wherein a through thread is arranged in the center of the outer nut, the upper section of the outer nut is a polygonal body, the lower section of the outer nut is a conical boss, a plurality of shrinkage joints are uniformly formed on the periphery of the conical boss along the axial direction, and the upper ends of the shrinkage joints are flush with the top surface of the conical boss; the outer shape of the inner nut is a polygonal body, an inverted conical groove for inserting the conical boss is formed in the center of the upper section of the inner nut, and a through thread is formed in the center of the lower section of the inner nut. The utility model discloses simple structure, easily processing, convenient operation, have locking, stopping concurrently and locking function, good reliability, long service life, the permanent, semi-permanent and inconvenient occasion of maintaining of specially adapted.
Description
Technical Field
The utility model relates to a nut, specific concentric equalizer lock nut of outer hoop that says so.
Background
The nut is an indispensable fastener for mounting and long-term operation of machinery, pipe networks and structural members in various industries, railways, wind driven generator towers, outdoor high-voltage power transmission and distribution towers and other equipment. However, during long-term operation of the equipment, the nut may be loosened, detached and lost due to vibration of the equipment itself, external force and the like, thereby causing damage to the equipment and facilities. Therefore, solving the problem that the nut is loosened by itself due to various reasons is an important subject of intense research and study at home and abroad.
The common anti-loose nut adopts a double-nut locking method, and the aim of preventing the nut from loosening is achieved by utilizing the occlusion of two nuts and a bolt and the increase of the interaction force (friction force) between threads. Stopping and locknut products suitable for various environments have also been researched and produced at home and abroad, for example: the problem of nut looseness is solved to a great extent by using a HardLock eccentric pressing locknut in Japan, a Tang thread anti-loosening technology in China, a DISC-LOCK locknut in America, a 30-degree wedge thread anti-loosening technology in Shija, and the like. However, some locknuts also have problems, such as: when the two non-concentric nuts are locked, a pair of radial shear forces which are close to each other, have the same size and are opposite in direction can be generated on the local part of the bolt, and the local fatigue of the bolt can be caused to cause the fracture of the bolt after long-time use.
Therefore, for permanent, semi-permanent and inconvenient maintenance occasions, further improvement of the locknut is more desirable, so that the fastening effect can be further improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the technical problem, provide a simple structure, easily processing, convenient operation, have locking, stopping and locking function concurrently, good reliability, long service life, the concentric equalizer locknut of outer hoop especially be applicable to the occasion of permanent, semi-permanent and inconvenient maintenance.
The technical scheme includes that the device comprises an outer nut and an inner nut, wherein a through thread is arranged in the center of the outer nut, the upper section of the outer nut is a polygonal body, the lower section of the outer nut is a conical boss, a plurality of shrinkage joints are uniformly formed on the conical boss along the axial direction, and the top surfaces of the shrinkage joints are flush with the upper end of the conical boss; the outer shape of the inner nut is a polygonal body, an inverted conical groove for inserting the conical boss is formed in the center of the upper section of the inner nut, and a through thread is formed in the center of the lower section of the inner nut.
The diameter of the top surface of the conical boss
Equal to the diameter of the top surface of the inverted conical groove
The diameter of the bottom surface of the conical boss
Is larger than the diameter of the bottom surface of the inverted conical groove
The height of the conical boss is matched with the depth of the inverted conical groove.
And an over-washing groove is also arranged below the bottom surface of the inverted conical groove.
The depth of the over-punching groove is 2-3mm, and the specific size is determined according to the specification and size of the nut and the bolt.
The utility model discloses in, the conical boss of outer nut corresponds with the inverted cone shape recess of interior nut and pegs graft, under the prerequisite of using interior nut with work piece locking earlier, when outer nut along the bolt in-process of screwing in downwards, during the inverted cone shape recess of interior nut of screw in gradually downwards of conical boss, the interior external contact surface of until two nuts laminates completely and does not have the clearance to screw up the end. Due to the diameter of the top surface of the conical boss
Equal to the diameter of the top surface of the inverted conical groove
The diameter of the bottom surface of the conical boss
Is larger than the reverse coneDiameter of the bottom surface of the groove
Therefore, the inverted conical groove inevitably applies a concentric, radial and uniform extrusion force to the conical boss gradually in the screwing process, so that the contraction joint of the conical boss is extruded and reduced, the mutual meshing force of thread teeth between the conical boss and the bolt is increased, and the aim of locking the bolt is fulfilled; meanwhile, the inverted conical groove of the inner nut tightly hoops the conical boss, so that the boss cannot expand outwards, and the nut is prevented from loosening.
The utility model has simple structure, easy processing and convenient operation, and has the functions of locking, stopping and anti-loosening; the double nuts are concentrically arranged, the problem of reverse shearing force does not exist after locking, the reliability is good, the service life is long, and the locking device is particularly suitable for permanent, semi-permanent and inconvenient maintenance occasions, such as: and (3) fixedly mounting outdoor equipment and facilities such as a tower frame of the wind driven generator, a high-voltage power supply tower frame, an offshore oil production platform and the like.
Drawings
FIG. 1 is a schematic external view of the present invention;
FIG. 2 is a schematic sectional view of the outer nut;
FIG. 3 is a schematic cross-sectional view of the inner nut;
fig. 4 is a schematic view of a first installation state of the present invention;
fig. 5 is a schematic view of a second installation state of the present invention;
fig. 6 is a schematic view of a third installation state of the present invention;
fig. 7 is a schematic view of a third installation state of the present invention.
Wherein, the bolt comprises 1-external nut, 2-polygon, 3-conical boss, 4-through thread, 5-shrinkage joint, 6-internal nut, 7-punching groove, 8-inverted conical groove, 9-through thread, 10-workpiece and 11-bolt.
Detailed Description
The invention will be further explained with reference to the drawings:
referring to fig. 1, the present invention includes an outer nut 1 and an inner nut 6, see fig. 2, the center of the outer nut 1 is provided with a through thread 4, the upper section of the through thread is a polygonal body 2 (hexagonal in this embodiment), the lower section is a conical boss 3, the periphery of the conical boss 3 is uniformly provided with a plurality of shrinkage joints 5 (three in this embodiment) along the axial direction, and the upper ends of the shrinkage joints 5 are flush with the top surface of the conical boss 3; referring to fig. 3, the inner nut 6 is a polygonal body (hexagonal in this embodiment), an inverted conical recess 8 for the conical boss 3 to be inserted is formed in the center of the upper section thereof, and a through thread 9 is formed in the center of the lower section thereof.
Referring to fig. 2 and 3, the diameter of the top surface of the conical boss 3
Equal to the diameter of the top surface of the inverted conical recess 8
The diameter of the bottom surface of the conical boss 3
Is larger than the diameter of the bottom surface of the inverted conical groove 8
The bolt is designed according to the fit tolerance of the outer nut 1 and the bolt 11;
thus, when the male nut 1 moves down along the bolt 11 and the conical projection 3 is screwed into the inverted conical recess 8, the male nut 1 is deformed by being pressed by the inverted conical recess 8 and is contracted inward by the contraction joint 5, thereby locking the male nut 1 to the bolt 11. Meanwhile, the inverted cone-shaped groove 8 tightly hoops the cone-shaped boss 3 and cannot expand outwards, so that multiple functions of locking, stopping and preventing looseness of double nuts under the outer hoop type concentric radial pressure equalization are achieved.
Furthermore, the height of the conical boss 3 is matched with the depth of the inverted conical groove 8, so that the outer nut 1 and the inner nut 6 are locked with the bolt 11, the conical boss 3 is just completely inserted into the inverted conical groove 8, and the contact surface of the outer nut 1 and the inner nut 6 is perfectly fitted. The lower part of the bottom surface of the inverted conical groove 8 is also provided with a punching groove 7, and the conical boss 3 can completely enter the inverted conical groove 8 by designing an installation allowance, so that the inner and outer joint surfaces of the outer nut 1 and the inner nut 6 are tightly jointed after installation. The depth of the over-flushing groove is 2-3 mm.
The action principle is as follows:
when the nut is required to fasten the workpiece 10, the nut of the present invention should be installed strictly in the following specific order: firstly, the inner nut 6 (the inverted conical groove 8 faces outwards) locks the workpiece 10 along the bolt 11; then the outer nut 1 is screwed along the bolt 11 (the conical boss 3 faces inwards), and in the process that the outer nut 1 is screwed downwards along the bolt 11, the conical boss 3 is gradually inserted into the inverted conical groove 8 of the inner nut 6 downwards until the inner contact surface and the outer contact surface of the two nuts 1 and 6 are completely attached without gaps and are mutually screwed. Since the diameter D1 of the top surface of the conical projection 3 is equal to the diameter D2 of the top surface of the inverted conical recess 8, the diameter D1 of the bottom surface of the conical projection 3 is larger than the diameter D2 of the bottom surface of the inverted conical recess 8. The inverted cone-shaped groove 8 can gradually apply a concentric, radial and uniform extrusion force to the cone-shaped boss 3 in the screwing process, so that the contraction joint of the cone-shaped boss 3 is extruded and reduced, and the mutual engaging force of the thread teeth between the cone-shaped boss 3 and the bolt 11 is increased. At the same time, the inverted conical groove 8 of the inner nut also tightly hoops the conical boss 3 of the outer nut, so that the conical boss 3 cannot expand outwards, and the nut is prevented from loosening by itself. Therefore, the functions of locking, stopping and preventing the workpiece 10 by the double nuts are realized. The interlocking working principle of the inner nut and the outer nut is shown in figures 4-7.
Claims (5)
1. The outer hoop concentric pressure equalizing type locknut comprises an outer nut and an inner nut, and is characterized in that a through thread is arranged in the center of the outer nut, the upper section of the outer nut is a polygonal body, the lower section of the outer nut is a conical boss, a plurality of shrinkage joints are uniformly formed on the conical boss along the axial direction, and the upper ends of the shrinkage joints are flush with the top surface of the conical boss; the outer shape of the inner nut is a polygonal body, an inverted conical groove for inserting the conical boss is formed in the center of the upper section of the inner nut, and a through thread is formed in the center of the lower section of the inner nut.
2. The outer band concentric pressure equalizing locknut of claim 1, wherein the diameter of the top surface of the conical boss is equal to the diameter of the top surface of the inverted conical recess; the diameter of the bottom surface of the conical boss is larger than that of the bottom surface of the inverted conical groove.
3. The outer band concentric pressure equalizing locknut of claim 1, wherein the height of the conical boss matches the depth of the inverted conical recess.
4. The outer band concentric pressure-equalizing locknut of any one of claims 1-3, wherein an overshoot slot is further provided below the bottom surface of the inverted conical groove.
5. The concentric pressure-equalizing locknut of claim 4, wherein the depth of the overshoot slots is 2-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921461283.4U CN210686621U (en) | 2019-09-04 | 2019-09-04 | Outer hoop concentric pressure-equalizing type locknut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921461283.4U CN210686621U (en) | 2019-09-04 | 2019-09-04 | Outer hoop concentric pressure-equalizing type locknut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210686621U true CN210686621U (en) | 2020-06-05 |
Family
ID=70896822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921461283.4U Expired - Fee Related CN210686621U (en) | 2019-09-04 | 2019-09-04 | Outer hoop concentric pressure-equalizing type locknut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210686621U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112128205A (en) * | 2020-09-03 | 2020-12-25 | 海洋动力(海南自贸区)新能源科技有限公司 | Wedge-shaped anti-loosening nut |
| WO2021254248A1 (en) * | 2020-06-19 | 2021-12-23 | 黄林川 | Anti-vibration, anti-loosening wedge lock nut |
| CN115111250A (en) * | 2022-05-23 | 2022-09-27 | 中冶焦耐(大连)工程技术有限公司 | Double-nut anti-loose threaded connection method |
| WO2023176502A1 (en) * | 2022-03-16 | 2023-09-21 | 日立Astemo株式会社 | Damper and anti-loosening structure |
-
2019
- 2019-09-04 CN CN201921461283.4U patent/CN210686621U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021254248A1 (en) * | 2020-06-19 | 2021-12-23 | 黄林川 | Anti-vibration, anti-loosening wedge lock nut |
| CN112128205A (en) * | 2020-09-03 | 2020-12-25 | 海洋动力(海南自贸区)新能源科技有限公司 | Wedge-shaped anti-loosening nut |
| WO2023176502A1 (en) * | 2022-03-16 | 2023-09-21 | 日立Astemo株式会社 | Damper and anti-loosening structure |
| CN115111250A (en) * | 2022-05-23 | 2022-09-27 | 中冶焦耐(大连)工程技术有限公司 | Double-nut anti-loose threaded connection method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200605 Termination date: 20210904 |
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| CF01 | Termination of patent right due to non-payment of annual fee |