CN117231615A - A sleeve group for nut locking - Google Patents
A sleeve group for nut locking Download PDFInfo
- Publication number
- CN117231615A CN117231615A CN202311327664.4A CN202311327664A CN117231615A CN 117231615 A CN117231615 A CN 117231615A CN 202311327664 A CN202311327664 A CN 202311327664A CN 117231615 A CN117231615 A CN 117231615A
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- CN
- China
- Prior art keywords
- sleeve
- safety
- nut
- hole
- degrees
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- 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.)
- Pending
Links
- 238000009434 installation Methods 0.000 claims abstract description 9
- 230000002265 prevention Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- Insertion Pins And Rivets (AREA)
Abstract
The nut anti-loosening sleeve group device is provided with 2 sleeves, one end of each sleeve is provided with a gear groove connecting nut, one end of each sleeve is provided with a safety hole, the positioning angle of each safety hole is provided with a plurality of steps, and the positions of the safety holes can be adjusted in multiple steps to reach 360 degrees so as to cover the safety holes on the bolts; the nut locking sleeve group is used, the safety hole on the bolt is not required to be aligned with the groove on the nut, the requirement on the longitudinal positioning dimensional precision of the safety hole on the bolt is reduced, the nut is clamped by the gear groove through adjusting the installation angle of the nut locking sleeve, and the safety hole on the nut locking sleeve is aligned with the safety hole on the bolt, so that the safety operation difficulty of the cotter pin is reduced, and the safety working step of the cotter pin is simplified.
Description
Technical Field
The invention relates to the technical field of fasteners, in particular to a sleeve group for locking nuts in a cotter pin safety mode.
Background
The adoption of cotter pins for nut locking is a common locking safety mode: after the worker screws the nut, the screwing degree of the nut is readjusted to lead the through hole penetrating through the cotter pin on the bolt to be aligned with the cotter pin on the nut, and the cotter pin is penetrated into the cotter pin for insurance; if the tightening torque is required, the rear safety hole is not aligned after exceeding the upper limit value and the lower limit value of the tightening torque, and the thickness of the gasket is required to be adjusted and then fastened again; after the nuts are screwed, safety holes are manually drilled, the operation mode is irregular, the bolts and the nuts can be damaged, the safety holes do not meet the technical requirements, and the cotter pin safety mode has high operation requirement precision and complex operation steps.
Disclosure of Invention
In order to solve the technical problems, the invention provides the device for preventing the nut from loosening, which can meet the performance requirements required by the prior art, and has the advantages of simple structure, strong universality, small structure, economy and safety. The aim of the invention is realized by the following technical scheme:
a sleeve set for nut lock comprising:
a first gear groove is formed in the inner wall of the first sleeve; 12 tooth grooves are uniformly distributed on the circumference of the first gear groove, 360 degrees are uniformly divided into 12 parts, and each part is 30 degrees; the first sleeve is also provided with first safety holes, and the first safety holes are provided with three safety holes;
the second sleeve is provided with a second gear groove on the inner wall of the cylinder; 12 tooth grooves are uniformly distributed on the circumference of the second gear groove; dividing 360 degrees into 12 parts, and 30 degrees each part; the second sleeve is also provided with second safety holes, and the second safety holes are three.
Further, the first positioning angles of the first safety holes are respectively set to be 0 degree, 65 degrees and 130 degrees; the second positioning angles of the second safety holes are respectively set to 15 degrees, 80 degrees and 145 degrees.
Further, by rotating the sleeve, the installation angles of the first safety hole and the second safety hole on the sleeve group are set as follows: n X30 ° + 0 °, n X30 ° + 5 °, n X30 ° + 15 °, n X30 ° + 20 °, n X30 ° + 25 ° (n is 0, 1, 2..11).
Further, the included angle between the hole axes of the first safety hole and the second safety hole is 5 degrees, and the central axis of the safety hole radially divides the circumference of the circular section of the bolt into 72 equal parts.
Further, a first observation hole is formed in the outer part of the cylinder body of the first sleeve, and penetrates through the cylinder body of the first sleeve; the second sleeve is provided with a second observation hole corresponding to the first observation hole outside the sleeve body, and the second observation hole penetrates through the sleeve body of the second sleeve.
The sleeve group for preventing the nut from loosening does not require the alignment of the safety hole on the bolt and the groove on the nut, simultaneously reduces the requirement on the longitudinal positioning dimensional precision of the safety hole on the bolt, and ensures that the safety hole on the nut anti-loosening sleeve is aligned with the safety hole on the bolt by adjusting the installation angle of the nut anti-loosening sleeve and clamping the nut by the gear groove, thereby reducing the safety operation difficulty of the cotter pin and simplifying the safety working step of the cotter pin.
Drawings
The invention is described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic view of an exploded construction of the sleeve and nut bolting relationship of the present invention;
FIG. 2 is a schematic view of the structure of the first sleeve of the present invention;
FIG. 3 is a schematic view of the structure of a first gear slot of the present invention;
FIG. 4 is a schematic view of a first positioning angle of the present invention;
FIG. 5 is a schematic view of the construction of a second sleeve of the present invention;
FIG. 6 is a schematic view of the structure of a second gear slot of the present invention;
FIG. 7 is a schematic view of a second positioning angle of the present invention;
FIG. 8 is a schematic cross-sectional view of a first gear slot of the present invention;
FIG. 9 is a schematic cross-sectional view of the sleeve and nut bolt connection of the present invention;
the figure shows: 1-first sleeve, 2-second sleeve, 3-first gear groove, 4-first safety vent, 5-first observation hole, 6-first positioning angle, 7-second gear groove, 8-second safety vent, 9-second positioning angle, 10-second observation hole, 11-cotter pin, 12-sleeve, 13-nut, 14-bolt.
Detailed Description
In order to further illustrate the inventive concept, the present invention will be described in further detail below with reference to the drawings and by means of specific examples, which are given by way of illustration only and are not to be construed as limiting the scope of the invention. All techniques implemented based on the teachings of the present invention are intended to be within the scope of the invention.
The invention provides a sleeve group for preventing loosening of nuts, which is shown in figures 1-6 and comprises a first sleeve 1 and a second sleeve 2; the gear grooves on the two sleeves are respectively provided with 12 tooth grooves, 360 degrees are equally divided into 12 parts, each part is 30 degrees, and the angle positioning of the safety holes on the sleeve group is respectively that the angle positioning of the safety holes on the first sleeve 1 is 0 degree (not shown in the figure), 65 degrees and 130 degrees; the angle location of the safety hole on the second sleeve 2 is 15 degrees, 80 degrees and 145 degrees, and through rotating the sleeve, the installation angle of the safety hole on the sleeve group can be as follows: n×30++0° (not shown in the figure), n×30++5°, n×30++10°, n×30++15°, n×30++20°, n×30++25 ° (n: 0, 1, 2.. Times.11), whereby the sleeve relief hole axes have an included angle of 5 °, the bolt circular section circumference is divided into 72 equal parts in the radial direction by the relief hole central axis.
Example 1
Taking the bolt 14 (HB 1-102G6×20×3) and the nut 13 (HB 1-402G-M6) as an example, the diameter of the safety hole on the bolt 14 is 1.5mm, the width of the safety groove on the nut 13 is 2mm, the central axis of the safety hole divides the circumference of the circular section of the bolt 14 into 72 equal parts along the radial direction, each arc length is 2 pi R/72=2×3.14× 3/72 approximately equal to 0.26mm, namely the safety hole on the sleeve 12 rotates by 5 degrees, the safety hole moves by 0.26mm along the circumferential direction, the adjacent 5 degrees on the sleeve, the overlapping width of the safety hole is about 2mm-0.26 mm=1.74 mm > 1.5mm, and the safety hole on any position of the bolt 14 can be completely covered.
After the nut 13 is screwed down, the first sleeve 1 can be sleeved on the nut 13, whether the first safety hole 4 on the first sleeve 1 covers the safety hole on the bolt 14 is observed, if the first sleeve 1 is not completely covered, the first sleeve 1 is taken down to rotate, namely, the installation angle is adjusted, the first sleeve is sleeved on the nut 13 again, and if the first sleeve 1 cannot ensure that the cotter pin 11 is smoothly penetrated, the installation angle is adjusted by changing the second sleeve 2 until the cotter pin 11 is smoothly penetrated into the safety hole.
The observation hole can be painted with marked lines and is used for observing whether the nut 13 is loosened or not; if the diameter of the bolt 14 is larger, the installation angle of the safety holes can be subdivided by increasing the number of the sleeves of the anti-loosening sleeve group of the nut 13, the number of the safety holes on the single sleeve and the number of the gear grooves of the single sleeve.
By adopting the sleeve group for preventing the nut from loosening, the safety hole on the bolt 14 is not required to be aligned with the groove on the nut 13, the requirement on the longitudinal positioning dimensional accuracy of the safety hole on the bolt 14 is reduced, the nut 13 is clamped by the gear groove through adjusting the installation angle of the anti-loosening sleeve of the nut 13, and the safety hole on the anti-loosening sleeve of the nut 13 is aligned with the safety hole on the bolt, so that the safety operation difficulty of the cotter pin 11 is reduced, and the safety working step of the cotter pin 11 is simplified.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (5)
1. A sleeve set for nut locking, characterized in that: comprising the following steps:
a first sleeve (1), wherein a first gear groove (3) is formed in the inner wall of the first sleeve (1); 12 tooth grooves are uniformly distributed on the circumference of the first gear groove (3); the first sleeve (1) is also provided with first safety holes (4), and the first safety holes (4) are provided with three safety holes;
a second sleeve (2), wherein a second gear groove (7) is arranged on the inner wall of the second sleeve (2); 12 tooth grooves are uniformly distributed on the circumference of the second gear groove (7); the second sleeve (2) is also provided with second safety holes (8), and the second safety holes (8) are provided with three.
2. The sleeve set for nut lock as claimed in claim 1, wherein: the first positioning angles (6) of the first safety holes (4) are respectively set to be 0 degree, 65 degrees and 130 degrees; the second positioning angles (9) of the second safety holes (8) are respectively set to 15 degrees, 80 degrees and 145 degrees.
3. The sleeve set for nut lock as claimed in claim 2, wherein: the installation angle of the first safety hole (4) and the second safety hole (8) is set as follows: n X30 ° + 0 °, n X30 ° + 5 °, n X30 ° + 15 °, n X30 ° + 20 °, n X30 ° + 25 °.
4. A sleeve set for nut looseness prevention as claimed in claim 3, wherein: the included angle between the axes of the first safety hole (4) and the second safety hole (8) is 5 degrees.
5. The sleeve set for nut lock as claimed in claim 1, wherein: a first observation hole (5) is formed in the outside of the cylinder body of the first sleeve (1), and the first observation hole (5) penetrates through the cylinder body of the first sleeve (1); a second observation hole (10) corresponding to the first observation hole (5) is arranged outside the cylinder body of the second sleeve (2), and the second observation hole (10) penetrates through the cylinder body of the second sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311327664.4A CN117231615A (en) | 2023-10-13 | 2023-10-13 | A sleeve group for nut locking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311327664.4A CN117231615A (en) | 2023-10-13 | 2023-10-13 | A sleeve group for nut locking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117231615A true CN117231615A (en) | 2023-12-15 |
Family
ID=89091180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311327664.4A Pending CN117231615A (en) | 2023-10-13 | 2023-10-13 | A sleeve group for nut locking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117231615A (en) |
-
2023
- 2023-10-13 CN CN202311327664.4A patent/CN117231615A/en active Pending
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