CN211398221U - Special sealing locknut for railway - Google Patents
Special sealing locknut for railway Download PDFInfo
- Publication number
- CN211398221U CN211398221U CN202020049653.XU CN202020049653U CN211398221U CN 211398221 U CN211398221 U CN 211398221U CN 202020049653 U CN202020049653 U CN 202020049653U CN 211398221 U CN211398221 U CN 211398221U
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- nut
- spring
- nut body
- bolt
- mounting part
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Abstract
The utility model relates to a nut fastener field discloses a special sealed locknut of railway, be equipped with on the nut body and prevent its not hard up pretension subassembly in bolt fastening back, it is concrete, after fastening the nut body, rotate fastening nut along fastening nut body direction, through the last arm-drag pulling of fastening nut hug spring upper end, make and hug the spring tighten up and block in the screw thread clearance department of bolt, through hugging closely the spring and hugging closely the bolt, can prevent that the nut body is not hard up, through rotating fastening nut messenger and hug closely the spring and hug closely the bolt, also be convenient for when dismantling the nut, remove the power of hugging closely of spring to the bolt, thereby also can convenient to detach the nut when realizing guaranteeing locking effect again, the pressure spring can prevent that fastening nut from rotating by oneself and be close to the nut body, avoid influencing the tensioning action of fastening nut to hugging closely the spring.
Description
Technical Field
The utility model relates to a nut fastener field especially relates to a special sealed locknut of railway.
Background
Locknut, self-clinching nut are a common fastening locknut, and its locking mode has: 1. various self-locking bolts or ring groove rivets are used for realizing self-locking; 2. various spring washers are additionally arranged in the threaded connection pair to realize thread self-locking; 3. coating glue on the threads to realize self-locking; in the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art: the existing locknut is generally difficult to disassemble and has good locking effect, and the locking effect is poor when the locknut is easy to disassemble.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a also special sealed locknut of railway that can convenient to detach when can guarantee locking effect is provided.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is: the utility model provides a special sealed locknut of railway, includes the nut body, the nut body has the screw hole, its characterized in that: the nut also comprises a pre-tightening assembly which is positioned on the nut body and can prevent the nut body from loosening after being fastened on a bolt;
the upper end of the nut body is provided with an installation part for installing the pre-tightening assembly, a threaded hole of the nut body penetrates through the installation part, and the outer surface of the installation part is provided with external threads;
the pre-tightening assembly comprises a clasping spring and a tightening nut,
the clamping spring is of a cylindrical spiral structure, the pitch and the direction of the clamping spring are consistent with those of the internal thread of the threaded hole of the nut body, the clamping spring is coaxially arranged with the mounting part, and the lower end of the clamping spring is fixed with the upper end of the mounting part;
the tensioning nut is provided with a mounting hole, an internal thread matched with the external thread on the outer surface of the mounting part is arranged in the mounting hole, the tensioning nut is sleeved on the mounting part and is in threaded connection with the mounting part, a pull arm is fixed at the upper end of the tensioning nut, and the upper end of the clasping spring is fixed with the pull arm;
when the tensioning nut rotates along the direction in which the nut body is fastened on the bolt, the diameter of the clasping spring can be reduced so as to clasp the bolt, and the tensioning nut moves towards the direction far away from the nut body;
a pressure spring is sleeved on the mounting part, the upper end of the pressure spring is in contact with the tensioning nut, and the lower end of the pressure spring is in contact with the nut body;
the threaded hole of installation department upper end and nut body lower extreme all has the ring channel, the ring channel is embedded all to have the plastics ring.
The further technical scheme is as follows: the lower end of the clasping spring is positioned in the annular groove at the upper end of the mounting part and above the plastic ring, and a first connecting pin is fixed at the lower end of the clasping spring along the radial direction and penetrates through the mounting part along the radial direction.
The further technical scheme is as follows: and a second connecting pin is fixed at the lower end of the clasping spring along the radial direction, and the second connecting pin penetrates through the pull arm along the radial direction.
The further technical scheme is as follows: the plastic ring is made of tetrafluoroethylene material.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
be equipped with on the nut body and can prevent its pretension subassembly that becomes flexible after the bolt fastening, it is concrete, after fastening the nut body, rotate fastening nut along fastening nut body direction, through the last arm-drag pulling of fastening nut hugs closely the spring upper end, make and hug closely the spring and tighten up and block in the screw thread clearance department of bolt, through hugging closely the spring bolt of hugging closely, can prevent that the nut body is not hard up, through rotating fastening nut messenger hug closely the spring bolt of hugging closely, also be convenient for when dismantling the nut, remove the power of hugging closely of spring to the bolt of hugging closely, thereby also can convenient to detach the nut when realizing guaranteeing locking effect again, the pressure spring can prevent that fastening nut from rotating by oneself and be close to the nut body, avoid influencing the tensioning effect of tensioning nut to hugging closely the spring.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic sectional structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are 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 some, not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1 and fig. 2, the railway special-purpose sealed locknut comprises a nut body 1, wherein the nut body 1 has a threaded hole, and is characterized in that: the nut is characterized by also comprising a pre-tightening assembly which is positioned on the nut body 1 and can prevent the nut body from loosening after being fastened on the bolt 9; the upper end of the nut body 1 is provided with an installation part 2 for installing a pre-tightening assembly, a threaded hole of the nut body 1 penetrates through the installation part 2, and the outer surface of the installation part 2 is provided with an external thread; the pre-tightening assembly comprises a clasping spring 3 and a tightening nut 4; the clasping spring 3 is of a cylindrical spiral structure, the pitch and the direction of the clasping spring are consistent with those of the internal thread of the threaded hole of the nut body 1, the clasping spring 3 and the mounting part 2 are coaxially arranged, and the lower end of the clasping spring 3 is fixed with the upper end of the mounting part 2; the tensioning nut 4 is provided with a mounting hole, an internal thread matched with the external thread on the outer surface of the mounting part 2 is arranged in the mounting hole, the tensioning nut 4 is sleeved on the mounting part 2 and is in threaded connection with the mounting part, a pull arm 5 is fixed at the upper end of the tensioning nut 4, and the upper end of the clasping spring 3 is fixed with the pull arm 5; when the tightening nut 4 rotates in the direction in which the nut body 1 is fastened to the bolt 9, the diameter of the clasping spring 3 can be reduced to clasp the bolt 9, and the tightening nut 4 moves in the direction away from the nut body 1; a compression spring 10 is sleeved on the mounting part 2, the upper end of the compression spring 10 is in contact with the tensioning nut 4, and the lower end of the compression spring 10 is in contact with the nut body 1; the threaded hole department of installation department 2 upper end and nut body 1 lower extreme all has the ring channel, all inlay plastics ring 6 in the ring channel.
During the use, the utility model discloses use with the cooperation of bolt 9, it rotates taut nut 4 along fastening nut body 1 direction after fastening nut body 1, embrace tight spring 3 upper end through the 5 pulling of the arm-drag on taut nut 4, make and embrace spring 3 and tighten up and block in the screw thread department of bolt 9, embrace bolt 9 through embracing tight spring 3, taut nut 4 can be pushed up to pressure spring 10 upper end, in order to prevent it from rotating by oneself, nut body 1 and 2 integrated into one piece of installation department, in 6 interference fit embedding ring channels of plastic ring, can attack the screw thread on plastic ring 6 at 1 screw in bolt 9 in-process of nut body, plastic ring 6 can sealing nut body 1's screw hole, taut nut 4 is the length of side structure with nut body 1, be convenient for twist with same spanner.
Be equipped with on the nut body 1 and can prevent its pretension subassembly that becomes flexible after the fastening on bolt 9, it is concrete, after fastening nut body 1, rotate taut nut 4 along the 1 direction of fastening nut body, 3 upper ends of spring are embraced tightly through the 5 pulling of the arm-drag on taut nut 4, make and embrace spring 3 and tighten up and block in the screw clearance department of bolt 9, embrace bolt 9 through embracing tightly spring 3, can prevent that nut body 1 is not hard up, it embraces bolt 9 to make through rotating taut nut 4 and embrace spring 3, also be convenient for when dismantling the nut, relieve and embrace the power of tightly spring 3 to bolt 9, thereby also can convenient to detach the nut when realizing guaranteeing locking effect again, pressure spring 10 can prevent that taut nut 4 from rotating by oneself and being close to nut body 1, avoid influencing the tensioning effect of taut nut 4 to embracing spring 3.
Embrace 3 lower extremes of spring and be located the ring channel of installation department 2 upper ends and be located plastics ring 6 upper portion, embrace 3 lower extremes of spring and be fixed with first connecting pin 7 along radial direction, first connecting pin 7 radially runs through installation department 2, and 3 lower extremes of spring are held tightly and are fixed with second connecting pin 8 along radial direction, second connecting pin 8 radially runs through single arm-drag 5, is convenient for embrace spring 3 installation and dismantlement.
The plastic ring 6 is made of tetrafluoroethylene material.
The above is only the preferred embodiment of the present invention, and any person can make some simple modifications, deformations and equivalent replacements according to the present invention, all fall into the protection scope of the present invention.
Claims (4)
1. The utility model provides a railway special use sealed locknut, includes nut body (1), nut body (1) has the screw hole, its characterized in that: the nut is characterized by also comprising a pre-tightening assembly which is positioned on the nut body (1) and can prevent the nut body from loosening after being fastened on a bolt;
the upper end of the nut body (1) is provided with an installation part (2) for installing a pre-tightening assembly, a threaded hole of the nut body (1) penetrates through the installation part (2), and the outer surface of the installation part (2) is provided with an external thread;
the pre-tightening assembly comprises a clasping spring (3) and a tightening nut (4);
the clasping spring (3) is of a cylindrical spiral structure, the pitch and the direction of the clasping spring are consistent with those of the internal thread of the threaded hole of the nut body (1), the clasping spring (3) and the mounting part (2) are coaxially arranged, and the lower end of the clasping spring (3) is fixed with the upper end of the mounting part (2);
the tensioning nut (4) is provided with a mounting hole, an internal thread matched with the external thread on the outer surface of the mounting part (2) is arranged in the mounting hole, the tensioning nut (4) is sleeved on the mounting part (2) and is in threaded connection with the mounting part, a pull arm (5) is fixed at the upper end of the tensioning nut (4), and the upper end of the clasping spring (3) is fixed with the pull arm (5);
when the tensioning nut (4) rotates along the direction of fastening the nut body (1) on the bolt, the diameter of the clasping spring (3) can be reduced so as to clasp the bolt, and the tensioning nut (4) moves towards the direction far away from the nut body (1);
a compression spring (10) is sleeved on the mounting part (2), the upper end of the compression spring (10) is in contact with the tensioning nut (4), and the lower end of the compression spring (10) is in contact with the nut body (1);
the upper end of the mounting part (2) and the threaded hole at the lower end of the nut body (1) are provided with annular grooves, and plastic rings (6) are embedded in the annular grooves.
2. The railway special sealing anti-loose nut as claimed in claim 1, wherein: embrace and tightly spring (3) lower extreme and be located the ring channel of installation department (2) upper end and be located plastics ring (6) top, embrace and tightly spring (3) lower extreme and be fixed with first connecting pin (7) along radial direction, first connecting pin (7) radially run through installation department (2).
3. The railway special sealing anti-loose nut as claimed in claim 1 or 2, wherein: and a second connecting pin (8) is fixed at the lower end of the clasping spring (3) along the radial direction, and the second connecting pin (8) penetrates through the pull arm (5) along the radial direction.
4. The railway special sealing anti-loose nut as claimed in claim 1, wherein: the plastic ring (6) is made of tetrafluoroethylene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020049653.XU CN211398221U (en) | 2020-01-06 | 2020-01-06 | Special sealing locknut for railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020049653.XU CN211398221U (en) | 2020-01-06 | 2020-01-06 | Special sealing locknut for railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211398221U true CN211398221U (en) | 2020-09-01 |
Family
ID=72233434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020049653.XU Active CN211398221U (en) | 2020-01-06 | 2020-01-06 | Special sealing locknut for railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211398221U (en) |
-
2020
- 2020-01-06 CN CN202020049653.XU patent/CN211398221U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |