CN212455171U - Anti-loosening bolt and nut assembly - Google Patents
Anti-loosening bolt and nut assembly Download PDFInfo
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- CN212455171U CN212455171U CN202020740159.8U CN202020740159U CN212455171U CN 212455171 U CN212455171 U CN 212455171U CN 202020740159 U CN202020740159 U CN 202020740159U CN 212455171 U CN212455171 U CN 212455171U
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- nut
- expansion sleeve
- main bolt
- bolt
- circular
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Abstract
The utility model discloses a locking bolt nut subassembly that takes off, including the kingbolt and the circular cover that rises. The circular expansion sleeve is sleeved on the periphery of the main bolt. Wherein, the lower extreme of kingbolt is established and is installed the cover gland nut that rises through the inside bottom cover of circular cover that rises. Wherein, the lower side of the expansion sleeve gland nut on the main bolt is sleeved with a belleville spring washer. And the bottom end of the main bolt is positioned at the periphery of the expansion sleeve compression nut and the butterfly spring washer, and is sleeved with a main bolt tensioning nut. Wherein, the periphery of the circular expansion sleeve is provided with a connected piece through a main bolt tightening nut. Therefore, the utility model discloses a locking bolt nut subassembly that takes off, overall arrangement simple structure has the anti-loosing effect of shaking, and the dismouting of being convenient for can used repeatedly many times, and stability and practicality are higher.
Description
Technical Field
The utility model relates to a machine-building technical field especially relates to an anti-loosening bolt and nut subassembly.
Background
At present, the anti-loosening technology of threaded connection mainly comprises three types: friction locking, mechanical locking and thread pair damage locking. The anti-loosening requirement of the threaded connection mainly needs to ensure that the nut, namely the internal thread, is constant relative to the bolt, namely the axial position of the external thread, in the service process, even if the thickness of a fastener is reduced or the thickness of the fastener disappears, but the anti-loosening failure caused by the decline of pretightening force exists in the friction anti-loosening process, the mechanical anti-loosening process has the difficulty of re-tightening and tightening torque, and the defect that the torque requirement cannot be reused when the anti-loosening of a thread pair is damaged, namely the tail of the thread pair is damaged by a punch or the gap of the thread pair is solidified. Particularly, for a fastened piece with a screw hole formed in a soft material, transition threads or interference threads with the increased pitch diameter of the external threads are mainly applied to solve the problem of loosening in the service process, and the fastened piece with the light hole formed is also made of the soft material and is easy to loosen, so that the fastened piece cannot be reused.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a locking bolt nut subassembly that takes off, its overall arrangement simple structure has the anti-loosing effect of shaking, and the dismouting of being convenient for can used repeatedly many times, and stability and practicality are higher.
In order to achieve the purpose, the utility model provides an anti-loosening bolt and nut assembly, including the kingbolt and the circular cover that rises. The circular expansion sleeve is sleeved on the periphery of the main bolt. Wherein, the lower extreme of kingbolt is established and is installed the cover gland nut that rises through the inside bottom cover of circular cover that rises. Wherein, the lower side of the expansion sleeve gland nut on the main bolt is sleeved with a belleville spring washer. And the bottom end of the main bolt is positioned at the periphery of the expansion sleeve compression nut and the butterfly spring washer, and is sleeved with a main bolt tensioning nut. Wherein, the periphery of the circular expansion sleeve is provided with a connected piece through a main bolt tightening nut.
The utility model discloses an among the embodiment, the top of kingbolt adopts the top to be equipped with outer hexagonal shape bottom circular flange fixed knot to construct, and kingbolt's bottom periphery is equipped with the external screw thread that matches the installation with kingbolt tie nut, and kingbolt's middle section is for having the tapered pole portion, and the outer conical surface of pole portion matches the installation with the circular hole conical surface that rises the cover.
The utility model discloses an in the embodiment, circular cover that rises is an axial open-ended elastic sleeve, and circular cover that rises adopts the spring steel material, and the inside of circular cover that rises is equipped with the hole conical surface, and the lateral surface of circular cover that rises is a cylindrical surface to it is coaxial with the hole conical surface.
The utility model discloses an in an embodiment, the bottom of the cover gland nut that rises is circular flange face structure, and the top of the cover gland nut that rises is outer hexagonal shape structure.
The utility model discloses an in an embodiment, the top of main bolt straining nut is equipped with the counter bore, and the inside bottom of main bolt straining nut is equipped with the blind hole, and the inner wall of main bolt straining nut is equipped with the internal thread.
The utility model discloses an in the embodiment, be equipped with the multiunit altogether by the connecting piece, and offered the hole by the top of connecting piece, and the circular cover that rises of size matching installation of hole.
Compared with the prior art, according to the utility model discloses a locking bolt nut subassembly that takes off, simple structure is reasonable, has the anti-loosing effect that shakes, and the current equipment of screwing up is applied in the assembly of being convenient for, and it is all more convenient to tighten and loosen during inspection and maintenance. The novel laminated rotor is suitable for fastening laminated rotors, laminated steel plates and the like at normal temperature, is convenient to disassemble and assemble, can be repeatedly used for many times, and is high in stability and practicability.
Drawings
Fig. 1 is a schematic perspective view of a bolt and nut assembly according to an embodiment of the present invention;
fig. 2 is a schematic view of an internal structure of a locking bolt and nut assembly according to an embodiment of the present invention;
FIG. 3 is an exploded view of a bolt and nut assembly according to an embodiment of the present invention;
fig. 4 is a schematic view of an installation structure of the anti-loose bolt-nut assembly connection connected piece according to an embodiment of the present invention.
Description of the main reference numerals:
1-main bolt, 2-circular expansion sleeve, 3-expansion sleeve compression nut, 4-belleville spring washer, 5-main bolt tightening nut and 6-connected piece.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Fig. 1 is a schematic perspective view of a bolt and nut assembly according to an embodiment of the present invention. Fig. 2 is a schematic view of an internal structure of a bolt and nut assembly according to an embodiment of the present invention. Fig. 3 is an exploded view of a bolt and nut assembly according to an embodiment of the present invention. Fig. 4 is a schematic view of an installation structure of the anti-loose bolt-nut assembly connection connected piece according to an embodiment of the present invention.
As shown in fig. 1 to 4, the anti-loose bolt-nut assembly according to the preferred embodiment of the present invention comprises a main bolt 1, a circular expansion sleeve 2, an expansion sleeve compression nut 3, a belleville washer 4 and a main bolt tension nut 5. The top end of the main bolt 1 is provided with an outer hexagonal bottom circular flange fixing structure at the top. The periphery of the bottom end of the main bolt 1 is provided with an external thread matched with the main bolt tensioning nut 5, the middle section of the main bolt 1 is a tapered rod part, and the inner hole conical surface of the circular expansion sleeve 2 on the outer conical surface of the rod part is matched and installed. The peripheral cover of kingbolt 1 is equipped with circular cover 2 that rises, and circular cover 2 that rises is an axial open-ended elastic sleeve, and circular cover 2 that rises adopts the spring steel material, and the inside of circular cover 2 that rises is equipped with the hole conical surface. The outer side surface of the circular expansion sleeve 2 is a cylindrical surface and is coaxial with the conical surface of the inner hole. The lower extreme of kingbolt 1 runs through the inside bottom cover of circular cover 2 that rises and establishes and install cover gland nut 3 that rises, and the bottom of cover gland nut 3 that rises is circular flange face structure, and the top of cover gland nut 3 that rises is outer hexagonal shape structure.
And a belleville spring washer 4 is sleeved on the lower side of the expansion sleeve compression nut 3 on the main bolt 1. The bottom end of the main bolt 1 is positioned at the periphery of the expansion sleeve compression nut 3 and the butterfly spring washer 4, and a main bolt tensioning nut 5 is sleeved and installed. The top end of the main bolt tensioning nut 5 is provided with a counter bore. The inside bottom of main bolt straining nut 5 is equipped with the blind hole, and 5 inner walls of main bolt straining nut are equipped with the internal thread. The periphery of the circular expansion sleeve 2 is provided with a connected piece 6 through a main bolt tightening nut 5, the connected piece 6 is provided with a plurality of groups, the top of the connected piece 6 is provided with an inner hole, and the size of the inner hole is matched with that of the circular expansion sleeve 2.
The main bolt tensioning nut 5 is arranged to rotate relative to the main bolt 1 to be tightened to generate axial movement, the disc spring washer 4 is driven to rotate by friction force generated by the joint end face of the main bolt tensioning nut 5 and the disc spring washer 4, and the expansion sleeve compression nut 3 is driven to rotate relative to the main bolt by friction force generated by the joint end face of the disc spring washer 4 and the zero expansion sleeve compression nut 3. And the expansion sleeve compression nut 3 rotates to generate axial movement, so that the circular expansion sleeve 2 is pushed to move axially along the axis of the rod part of the main bolt 1. When the circular expansion sleeve 2 axially moves and radially expands simultaneously, and the outer cylindrical surface of the circular expansion sleeve 2 and the inner hole surface of each connected piece 6 reach a specified torque value, the outer cylindrical surface of the circular expansion sleeve 2 is fully attached to and completely pressed against the inner hole surface of each connected piece 6. The inner space of each fastened part hole is sealed by materials, and the loosening process is just opposite when the effect of vibration resistance and loosening prevention is achieved. Firstly screwing out the main bolt tensioning nut 5, then screwing out the expansion sleeve compression nut 3, drawing out the main bolt 1, and then pushing out the circular expansion sleeve 2 by using the cylindrical rod. The whole device has simple structure and vibration-resistant and anti-loose effect, is convenient to assemble and apply the existing tightening equipment, is convenient to tighten and loosen during inspection and maintenance, is suitable for fastening of laminated rotors, laminated steel plates and the like at normal temperature, and can be repeatedly used for many times and has higher stability and practicability when being convenient to disassemble and assemble.
In practical application, the utility model discloses a locking bolt nut subassembly that takes off's work flow as follows: in use, axial movement is generated by rotational tightening of the kingbolt-tightening nut 5 relative to the kingbolt 1. The disc spring washer 4 is rotated by the frictional force generated by the joint end surface of the main bolt tightening nut 5 and the disc spring washer 4. And then the expansion sleeve compression nut 3 rotates relative to the main bolt through the friction force generated by the joint end surface of the disc-shaped spring pad 4 and the zero expansion sleeve compression nut 3. And the expansion sleeve compression nut 3 rotates to generate axial movement, so that the circular expansion sleeve 2 is pushed to axially move along the axis of the rod part of the main bolt 1, and the circular expansion sleeve 2 expands along the radial direction in the axial movement process. When the outer cylindrical surface and the inner hole surface of each connected piece 6 reach the specified torque value, the outer cylindrical surface of the circular expansion sleeve 2 is fully attached to and completely pressed against the inner hole surface of each connected piece 6. The material that has formed in each part downthehole space fastened seals, reaches the locking effect of nai shake and tears the pine process open and then just opposite, screws out the jack-up nut 5 earlier, screws out the cover gland nut that rises 3 again, takes out jack-up 1, and circular cover 2 that rises is released to reuse cylinder stick, and overall device simple structure has the locking effect of nai shake.
In a word, the utility model discloses a locking bolt nut subassembly that takes off, simple structure is reasonable, has the anti-loosing effect that shakes, and the equipment of screwing up that current is applied in the assembly of being convenient for, and it is all more convenient to go up during inspection maintenance and pine take off. The novel laminated rotor is suitable for fastening laminated rotors, laminated steel plates and the like at normal temperature, is convenient to disassemble and assemble, can be repeatedly used for many times, and is high in stability and practicability.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (6)
1. An anti-loosening bolt and nut assembly, comprising:
a main bolt; and
the circular expansion sleeve is sleeved on the periphery of the main bolt;
the lower end of the main bolt penetrates through the inner bottom end of the circular expansion sleeve and is sleeved with an expansion sleeve compression nut;
a butterfly spring washer is sleeved on the main bolt and positioned on the lower side of the expansion sleeve compression nut;
the bottom end of the main bolt is positioned at the periphery of the expansion sleeve compression nut and the butterfly spring washer and is sleeved with a main bolt tensioning nut; and
and the periphery of the circular expansion sleeve is provided with a connected piece through the main bolt tightening nut.
2. The anti-loosening bolt-nut assembly according to claim 1, wherein the top end of the main bolt is provided with a bottom circular flange fixing structure with an outer hexagonal shape at the top, the periphery of the bottom end of the main bolt is provided with an external thread matched with the tightening nut of the main bolt, the middle section of the main bolt is a tapered rod part, and the outer tapered surface of the rod part is matched with the inner hole tapered surface of the circular expansion sleeve.
3. The anti-loosening bolt and nut assembly according to claim 1, wherein the circular expansion sleeve is an elastic sleeve with an axial opening, the circular expansion sleeve is made of spring steel, an inner hole conical surface is arranged inside the circular expansion sleeve, and the outer side surface of the circular expansion sleeve is a cylindrical surface and is coaxial with the inner hole conical surface.
4. The anti-loosening bolt and nut assembly according to claim 1 wherein the bottom end of the expansion sleeve compression nut is in a circular flange face configuration and the top end of the expansion sleeve compression nut is in an external hexagonal configuration.
5. The anti-loosening bolt and nut assembly according to claim 1, wherein the top end of the main bolt tension nut is provided with a counter bore, the inner bottom end of the main bolt tension nut is provided with a blind hole, and the inner wall of the main bolt tension nut is provided with an internal thread.
6. The anti-loosening bolt and nut assembly according to claim 1, wherein the connected pieces are provided with a plurality of groups, an inner hole is formed in the top of each connected piece, and the inner hole is matched with the circular expansion sleeve in size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020740159.8U CN212455171U (en) | 2020-05-08 | 2020-05-08 | Anti-loosening bolt and nut assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020740159.8U CN212455171U (en) | 2020-05-08 | 2020-05-08 | Anti-loosening bolt and nut assembly |
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| Publication Number | Publication Date |
|---|---|
| CN212455171U true CN212455171U (en) | 2021-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202020740159.8U Active CN212455171U (en) | 2020-05-08 | 2020-05-08 | Anti-loosening bolt and nut assembly |
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| CN (1) | CN212455171U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425512A (en) * | 2020-05-08 | 2020-07-17 | 广西玉柴机器股份有限公司 | Anti-loosening bolt and nut assembly |
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2020
- 2020-05-08 CN CN202020740159.8U patent/CN212455171U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425512A (en) * | 2020-05-08 | 2020-07-17 | 广西玉柴机器股份有限公司 | Anti-loosening bolt and nut assembly |
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