CN111188825A - Simple double-nut structure and anti-loosening method - Google Patents
Simple double-nut structure and anti-loosening method Download PDFInfo
- Publication number
- CN111188825A CN111188825A CN202010042108.2A CN202010042108A CN111188825A CN 111188825 A CN111188825 A CN 111188825A CN 202010042108 A CN202010042108 A CN 202010042108A CN 111188825 A CN111188825 A CN 111188825A
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- China
- Prior art keywords
- nut
- auxiliary
- main
- simple double
- locking screw
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- 238000000034 method Methods 0.000 title claims description 10
- 230000002265 prevention Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
Abstract
The invention discloses a simple double-nut structure which comprises a main nut, an auxiliary nut and a locking screw, wherein the internal threads of the main nut and the auxiliary nut are completely the same, the main nut and the auxiliary nut can be matched on the same screw rod, a plurality of thread through holes parallel to the axis of the auxiliary nut are formed in the auxiliary nut, and the locking screw penetrates through the thread through holes and can be contacted with the end face of the main nut. The simple double-nut structure can be used in a narrow space, and the matching relation between the main nut and the matching part is not influenced.
Description
Technical Field
The invention relates to the technical field of fastening and anti-loosening parts, in particular to a simple double-nut structure and an anti-loosening method.
Background
The screw connection in mechanical equipment mostly adopts double-nut anti-loosening, and the assembly process comprises the steps of firstly screwing a first nut (namely a main nut) and then loosening prevention through a second nut (namely an auxiliary nut). The first nut can be screwed to adjust the gap, then the first nut is fixed by a wrench, and the second nut is screwed simultaneously, so that a larger ejection force is generated between the two nuts, the pressure and the friction force between the thread pairs are increased, and the purpose of looseness prevention is realized. However, when a specific position such as a narrow space or the main nut needs to be matched with other parts for use, the main nut is required to be subjected to gap adjustment, normal use of the matched part is guaranteed, and anti-loosening treatment is also required, so that the existing double-nut structure cannot be adopted for loosening prevention under the condition.
Disclosure of Invention
The invention aims to provide a simple double-nut structure and a locking method, which are used for solving the problems in the prior art, so that the simple double-nut structure can be used in a narrow space and the matching relation between a main nut and a matching part is not influenced.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a simple double-nut structure which comprises a main nut, an auxiliary nut and a locking screw, wherein the internal threads of the main nut and the auxiliary nut are completely the same, the main nut and the auxiliary nut can be matched on the same screw rod, a plurality of thread through holes parallel to the axis of the auxiliary nut are formed in the auxiliary nut, and the locking screw penetrates through the thread through holes and can be contacted with the end face of the main nut.
Preferably, the internal threads of the main nut and the auxiliary nut are fine threads.
Preferably, a plurality of grooves are formed in the edges of the main nut and the auxiliary nut.
Preferably, the grooves are arranged along the axial direction of the main nut and the axial direction of the auxiliary nut, the grooves in the main nut are uniformly distributed along the circumferential direction of the main nut, and the grooves in the auxiliary nut are uniformly distributed along the circumferential direction of the auxiliary nut.
Preferably, the main nut has a width greater than that of the sub nut.
Preferably, the plurality of threaded through holes are uniformly distributed along the circumferential direction of the auxiliary nut.
Preferably, the effective thread length of the locking screw is greater than the thickness of the secondary nut.
Preferably, the nut end of the locking screw is provided with a hexagonal hole.
The invention also provides a loose-proof method of the simple double-nut structure, which comprises the steps of simultaneously screwing the main nut and the auxiliary nut into the screw rod, then screwing the main nut to adjust the gap, screwing the locking screw into the threaded through hole of the auxiliary nut after the gap adjustment requirement is met, and tightly pressing the end surface of the main nut by the end part of the locking screw.
Compared with the prior art, the invention has the following technical effects:
when the simple double-nut structure is applied, the main nut and the auxiliary nut are simultaneously screwed into the screw rod, then the main nut is rotated to adjust the gap, when the gap adjustment requirement is met, the locking screw is screwed into the threaded through hole of the auxiliary nut, the end part of the locking screw tightly pushes against the end surface of the main nut, the anti-loosening requirement of the main nut can be met, the simple double-nut structure can be used in a narrow space, and the matching relation between the main nut and a matching part cannot be influenced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a simple double nut structure according to the present invention;
FIG. 2 is a schematic structural view of the main nut of the present invention;
FIG. 3 is a cross-sectional view of the main nut of the present invention;
FIG. 4 is a schematic structural view of a secondary nut of the present invention;
FIG. 5 is a cross-sectional view of the secondary nut of the present invention;
FIG. 6 is a schematic structural diagram of an application of the present invention;
wherein: 1-screw rod, 2-bearing, 3-cylinder barrel, 4-locking screw, 5-main nut, 6-auxiliary nut, 7-thread through hole and 8-groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 1-5: the embodiment provides a simple double-nut structure, which comprises a main nut 5, an auxiliary nut 6 and a locking screw 4, wherein the internal threads of the main nut 5 and the auxiliary nut 6 are completely the same, the main nut 5 and the auxiliary nut 6 can be matched on the same screw rod 1, the auxiliary nut 6 is provided with a plurality of thread through holes 7 parallel to the axis of the auxiliary nut 6, the thread through holes 7 are uniformly distributed along the circumferential direction of the auxiliary nut 6, the locking screw 4 can contact with the end surface of the main nut 5 after penetrating through the thread through holes 7, the effective thread length of the locking screw 4 is larger than the thickness of the auxiliary nut 6, the nut end part of the locking screw 4 is provided with a hexagonal hole so as to conveniently screw the locking screw 4 to fasten and prevent loosening the main nut 5, the end part of the locking screw 4 is used for propping up the end surface of the main nut 5, the loosening prevention requirement of the main nut 5 can be met, and the simple double, without affecting the fit relationship of the main nut 5 and the fitting member.
Preferably, the edges of the main nut 5 and the auxiliary nut 6 are both provided with a plurality of grooves 8. The axis direction setting of main nut 5 and vice nut 6 is all followed to slot 8, and a plurality of slots 8 on the main nut 5 are along main nut 5's circumference evenly distributed, and a plurality of slots 8 on the vice nut 6 are along vice nut 6's circumference evenly distributed to in narrow and small space, can realize the rotation to main nut 5 and vice nut 6 with the help of special instrument.
Preferably, the internal threads of the main nut 5 and the sub nut 6 are fine threads to help the anti-loosening effect of the threads. Preferably, the width of the main nut 5 is larger than that of the auxiliary nut 6, so as to ensure that the influence of the acting force of the locking screw 4 on the gap adjustment of the main nut 5 is small.
Example two
The embodiment provides an anti-loosening method using the simple double-nut structure in the first embodiment, firstly, the main nut 5 and the auxiliary nut 6 are simultaneously screwed into the screw rod 1, then the main nut 5 is screwed to adjust the gap, after the gap adjusting requirement is met, the locking screw 4 is screwed into the threaded through hole 7 of the auxiliary nut 6, the end part of the locking screw 4 tightly props against the end surface of the main nut 5, so that the anti-loosening requirement of the main nut 5 can be met, meanwhile, the simple double-nut structure can be used in a narrow space, and the matching relation between the main nut 5 and the screw rod 1 cannot be influenced.
Application case
As shown in fig. 6: in this application example, the first embodiment and the second embodiment are applied, and effects of the first embodiment and the second embodiment are described. Specifically, with embodiment one and embodiment two be applied to electric servo cylinder, because the cooperation between bearing 2 and nut need be considered when 3 narrow and small spaces in electric servo cylinder bottom and loosen, when carrying out the fixed locking of nut, concrete process is as follows: firstly, a main nut 5 and an auxiliary nut 6 are screwed into a screw rod 1, the main nut 5 is screwed to the screw rod 1 by utilizing grooves 8 on the main nut 5 and the auxiliary nut 6, the screw rod 1 is difficult to rotate (no gap exists in a bearing 2 at the moment, the bearing 2 is required to be rotated when the main nut 5 is screwed so as to enable rolling bodies in the bearing 2 to be in a correct position on a raceway), and then the main nut 5 is unscrewed until the screw rod 1 can freely rotate, and gap adjustment is finished at the moment; then, the auxiliary nut 6 is screwed to enable the auxiliary nut 6 to be attached to the main nut 5, when the locking screw 4 is screwed, the locking screw 4 exerts acting force on the end face of the main nut 5, so that the screw rod 1 and the main nut 5 are stretched, threads of the main nut 5, the auxiliary nut 6 and the screw rod 1 are subjected to elastic-plastic deformation, and the anti-loosening effect is achieved. And the acting forces between the main nut 5 and the auxiliary nut 6 and the threads of the screw rod 1 are opposite, and in work, when the acting force between one nut and the screw rod 1 is weakened, the acting force between the other nut and the screw rod 1 is strengthened, so that the purposes of adjusting the gap of the bearing 2 and preventing looseness by double nuts are achieved.
The invention is suitable for use in narrow space or under special structure requirements; the double nuts are effectively locked, and meanwhile, the function of adjusting the clearance of a matched part is achieved; and the device has the advantages of simple structure, low processing cost, convenient operation and maintenance and the like, and can be readjusted when the clearance of the matched parts is changed.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. The utility model provides a simple and easy two nut structures which characterized in that: the nut comprises a main nut, an auxiliary nut and a locking screw, wherein the main nut and the internal thread of the auxiliary nut are completely the same, the main nut and the auxiliary nut can be matched on the same screw rod, a plurality of thread through holes parallel to the axis of the auxiliary nut are formed in the auxiliary nut, and the locking screw penetrates through the thread through holes and can be in contact with the end face of the main nut.
2. A simple double nut structure according to claim 1, wherein: the internal threads of the main nut and the auxiliary nut are fine threads.
3. A simple double nut structure according to claim 1, wherein: the edges of the main nut and the auxiliary nut are provided with a plurality of grooves.
4. A simple double nut structure according to claim 3, wherein: the grooves are arranged along the axial direction of the main nut and the axis direction of the auxiliary nut, the grooves on the main nut are uniformly distributed along the circumferential direction of the main nut, and the grooves on the auxiliary nut are uniformly distributed along the circumferential direction of the auxiliary nut.
5. A simple double nut structure according to claim 1, wherein: the shape width of the main nut is larger than that of the auxiliary nut.
6. A simple double nut structure according to claim 1, wherein: and the plurality of thread through holes are uniformly distributed along the circumferential direction of the auxiliary nut.
7. A simple double nut structure according to claim 1, wherein: the effective thread length of the locking screw is larger than the thickness of the auxiliary nut.
8. A simple double nut structure according to claim 1, wherein: and a hexagonal hole is formed in the end part of the nut of the locking screw.
9. A method of loosening prevention using a simple double nut structure according to any one of claims 1 to 8, wherein: firstly, the main nut and the auxiliary nut are simultaneously screwed into the screw rod, then the main nut is screwed to adjust the gap, when the gap adjusting requirement is met, the locking screw is screwed into the threaded through hole of the auxiliary nut, and the end part of the locking screw tightly pushes against the end surface of the main nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010042108.2A CN111188825A (en) | 2020-01-15 | 2020-01-15 | Simple double-nut structure and anti-loosening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010042108.2A CN111188825A (en) | 2020-01-15 | 2020-01-15 | Simple double-nut structure and anti-loosening method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111188825A true CN111188825A (en) | 2020-05-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010042108.2A Pending CN111188825A (en) | 2020-01-15 | 2020-01-15 | Simple double-nut structure and anti-loosening method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111188825A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112030783A (en) * | 2020-08-21 | 2020-12-04 | 盐城工学院 | Bridge reinforced structure |
| CN113606237A (en) * | 2021-07-27 | 2021-11-05 | 燕山大学 | Slotted nut structure and nut anti-loosening method adopting screw jacking |
| CN113606238A (en) * | 2021-07-27 | 2021-11-05 | 燕山大学 | Symmetrical slotting locknut structure and locknut locking method |
| CN113847325A (en) * | 2021-09-13 | 2021-12-28 | 中国重汽集团济南动力有限公司 | Drive axle shaft head locking structure and assembling and disassembling operation method thereof |
| CN114576445A (en) * | 2022-02-25 | 2022-06-03 | 核电运行研究(上海)有限公司 | Flange bolt hole centering tool and use method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07269550A (en) * | 1994-03-25 | 1995-10-17 | Okuma Mach Works Ltd | High accuracy locking nut |
| CN202746380U (en) * | 2012-03-31 | 2013-02-20 | 东莞富强鑫塑胶机械制造有限公司 | Double nut with self-locking function |
| CN103967914A (en) * | 2014-05-26 | 2014-08-06 | 何帅松 | Safety nut device |
| CN208010753U (en) * | 2018-04-04 | 2018-10-26 | 北京宇晨瑞翔精密机械有限公司 | A kind of locking nut |
-
2020
- 2020-01-15 CN CN202010042108.2A patent/CN111188825A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07269550A (en) * | 1994-03-25 | 1995-10-17 | Okuma Mach Works Ltd | High accuracy locking nut |
| CN202746380U (en) * | 2012-03-31 | 2013-02-20 | 东莞富强鑫塑胶机械制造有限公司 | Double nut with self-locking function |
| CN103967914A (en) * | 2014-05-26 | 2014-08-06 | 何帅松 | Safety nut device |
| CN208010753U (en) * | 2018-04-04 | 2018-10-26 | 北京宇晨瑞翔精密机械有限公司 | A kind of locking nut |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112030783A (en) * | 2020-08-21 | 2020-12-04 | 盐城工学院 | Bridge reinforced structure |
| CN113606237A (en) * | 2021-07-27 | 2021-11-05 | 燕山大学 | Slotted nut structure and nut anti-loosening method adopting screw jacking |
| CN113606238A (en) * | 2021-07-27 | 2021-11-05 | 燕山大学 | Symmetrical slotting locknut structure and locknut locking method |
| CN113847325A (en) * | 2021-09-13 | 2021-12-28 | 中国重汽集团济南动力有限公司 | Drive axle shaft head locking structure and assembling and disassembling operation method thereof |
| CN114576445A (en) * | 2022-02-25 | 2022-06-03 | 核电运行研究(上海)有限公司 | Flange bolt hole centering tool and use method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200522 |