CN219933230U - Washer type pipeline joint thread anti-loosening structure - Google Patents
Washer type pipeline joint thread anti-loosening structure Download PDFInfo
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- CN219933230U CN219933230U CN202321171178.3U CN202321171178U CN219933230U CN 219933230 U CN219933230 U CN 219933230U CN 202321171178 U CN202321171178 U CN 202321171178U CN 219933230 U CN219933230 U CN 219933230U
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- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 238000007689 inspection Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Abstract
The utility model provides a washer type pipeline joint thread anti-loosening structure, which comprises: the anti-loosening device comprises a flat pipe nozzle, an outer sleeve nut, an anti-loosening washer and a straight-through pipe, wherein the flat pipe nozzle is connected with the outer sleeve nut, the outer sleeve nut is located at the end part of the direction of the anti-loosening washer, first limiting saw teeth are arranged on the end part of the direction of the anti-loosening washer and are of a stepped ring shape, saw teeth on the first limiting saw teeth are of a slope surface, the straight-through pipe is located at the end part of the direction of the anti-loosening washer and are of a second limiting saw teeth, the saw teeth on the second limiting saw teeth are of a stepped ring shape, the direction of the first limiting saw teeth on the outer sleeve nut is opposite to the direction of the second limiting saw teeth on the straight-through pipe, the problem that the existing pipe joint anti-loosening structure cannot be reused and special handling tools are needed is solved, and inconvenience is brought to a pipe connection process and post inspection and maintenance.
Description
Technical Field
The utility model relates to the technical field of aerospace engines, in particular to a washer type pipeline joint thread anti-loosening structure.
Background
The aeroengine pipeline is one of important components of the aeroengine, and a pipeline joint connects the aeroengine pipeline, wherein the pipeline joint is a key part of an aeroengine pipeline system. When the aeroengine works, the pipeline system generates unavoidable forced vibration, and the connection looseness of the pipe joint is easy to cause.
At present, the anti-loosening structures of the spot welding, the cotter pin, the series steel wire and the like are used for solving the problems that the anti-loosening structures of the spot welding, the cotter pin and the series steel wire cannot be reused and special assembling and disassembling tools are needed, and inconvenience is brought to the pipeline connection process and the later inspection and maintenance.
The utility model provides a novel anti-loosening structure of a gasket pipeline joint, which can effectively prevent loosening under the condition of meeting the requirement of the novel anti-loosening structure on the working environment of an aeroengine. Meanwhile, the device is simple and convenient to assemble and disassemble, and brings convenience to later-stage inspection and maintenance.
Disclosure of Invention
The utility model aims to provide a washer type pipeline joint thread anti-loosening structure, which solves the problems that the existing pipeline joint anti-loosening structure cannot be reused and special assembling and disassembling tools are needed, and the problems of inconvenience in pipeline connection process and later inspection and maintenance are caused.
The utility model provides a washer type pipeline joint thread anti-loosening structure, which comprises: the anti-loosening device comprises a flat nozzle, a sleeve nut, a locking washer and a straight through pipe, wherein the flat nozzle is connected with the sleeve nut;
the end part of the outer sleeve nut in the direction of the anti-loosening washer is provided with first limiting saw teeth which are in a stepped annular shape, and saw teeth on the first limiting saw teeth are inclined surfaces;
the end part of the through-type anti-loosening washer in the direction is provided with a second limiting saw tooth, the second limiting saw tooth is a stepped annular type, and saw teeth on the second limiting saw tooth are inclined surfaces;
the direction of the first limiting saw teeth on the outer sleeve nut is opposite to the direction of the second limiting saw teeth on the straight-through nut.
Further, one part of the through part extends into the flat nozzle, and the other part of the through part is connected with the coat nut through threads.
Further, the first limiting saw teeth and the second limiting saw teeth are matched with the saw tooth structure on the anti-loose washer in the inclination of the saw teeth.
Further, the saw tooth shape on the first limit saw tooth, the second limit saw tooth and the anti-loose washer further comprises a quadrangle.
The utility model has the following beneficial effects: the utility model provides a washer type pipeline joint thread anti-loosening structure, which comprises: the anti-loosening device comprises a flat nozzle, a sleeve nut, a lock washer and a straight-through part, wherein the flat nozzle is connected with the sleeve nut, the sleeve nut is positioned at the end part of the direction of the lock washer, a first limiting saw tooth is provided with a stepped annular shape, the saw tooth on the first limiting saw tooth is a slope surface, the straight-through part is positioned at the end part of the direction of the lock washer, a second limiting saw tooth is provided with a stepped annular shape, the saw tooth on the second limiting saw tooth is a slope surface, and the direction of the first limiting saw tooth on the sleeve nut is opposite to the direction of the second limiting saw tooth on the straight-through part. The utility model realizes reliable and safe looseness prevention of the pipeline joint on the basis of meeting the tightness of the aviation pipeline joint, and meanwhile, the device has the advantages of simple and convenient structure assembly and disassembly, easy operation and convenient later inspection and maintenance of the pipeline joint.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are 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 utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the general structure of a washer-type pipe joint thread locking structure provided by the utility model;
FIG. 2 is a schematic diagram of a jacket nut of a washer-type pipeline joint thread anti-loosening structure provided by the utility model;
FIG. 3 is a schematic view of a lock washer of the washer-type pipeline joint thread lock structure provided by the utility model;
fig. 4 is a schematic view of a through structure of a washer-type pipeline joint thread anti-loosening structure provided by the utility model;
fig. 5 is a schematic view of a gasket type pipeline joint thread anti-loosening structure in a disassembled state;
FIG. 6 is a schematic diagram of an assembly process of a washer-type pipeline joint thread anti-loosening structure provided by the utility model;
fig. 7 is an assembly schematic diagram of a washer-type pipeline joint thread locking structure provided by the utility model.
Illustration of: the anti-loosening device comprises a 1-flat nozzle, a 2-sleeve nut, a 3-anti-loosening washer, a 4-through, 5-first limiting saw teeth and 6-second limiting saw teeth.
Detailed Description
As shown in fig. 1 to 5, an embodiment of the present utility model provides a washer-type thread locking structure for a pipe joint, including: the anti-loosening device comprises a flat nozzle 1, a sleeve nut 2, a locking washer 3 and a straight through 4, wherein the flat nozzle 1 is connected with the sleeve nut 2;
the end of the coat nut 2 connected with the through 4 is provided with a first limiting saw tooth 5, the saw tooth is in a stepped ring shape, and each small saw tooth has a certain inclination to ensure the tight fit with the structure of the anti-loose washer 3, thereby achieving better anti-loose performance
The end of the straight through 4 connected with the coat nut 2 is provided with a second limiting saw tooth 6, the saw tooth is in a stepped ring shape, and each small saw tooth has a certain inclination to ensure the tight fit with the structure of the anti-loosening washer 3, thereby achieving better anti-loosening.
The end part of the coat nut 2 in the direction of the lock washer 3 is provided with first limiting saw teeth 5, the first limiting saw teeth 5 are in a stepped annular shape, and saw teeth on the first limiting saw teeth 5 are inclined surfaces;
the end part of the straight through 4 in the direction of the anti-loosening washer 3 is provided with a second limiting saw tooth 6, the second limiting saw tooth 6 is a stepped annular shape, and saw teeth on the second limiting saw tooth 6 are inclined surfaces;
the direction of the first limiting saw teeth 5 on the outer sleeve nut 2 is opposite to the direction of the second limiting saw teeth 6 on the straight-through nut 4. The limiting saw teeth of the coat nut 2 and the through 4 are opposite in direction, thereby achieving the matching with the anti-loose washer 3
In particular, a portion of the through-passage 4 extends into the flat nozzle 1, and another portion of the through-passage 4 is screwed with the coat nut 2.
Specifically, the first limiting saw tooth 5 and the second limiting saw tooth 6 are matched with the saw tooth structure on the lock washer 3 in the saw tooth inclination.
Specifically, the saw tooth shape of the first limiting saw tooth 5, the second limiting saw tooth 6 and the lock washer 3 further includes a quadrangle, and the saw tooth shape is not limited to a triangle with a certain inclination, and may be a quadrangle.
As shown in fig. 1 to 7, the present utility model provides a novel gasket pipe joint connection structure, comprising a flat nozzle 1, a cap nut 2, a lock washer 3 and a through 4, wherein the flat nozzle 1 is not greatly different from the conventional structure. According to the utility model, the coat nut 2 is connected with the straight through 4 through conventional threads, and the middle is limited and loose-proof through the gasket 3. The concrete structure is as follows: the end of the jacketing nut 2 adjacent to the through 4 is provided with limiting saw teeth, and the end of the through 4 adjacent to the jacketing nut 2 is also provided with limiting saw teeth. Referring to fig. 5, in the process of assembling the sleeve nut 2 and the through 4, the lock washer 3 is assembled between the sleeve nut 2 and the through 4, and the assembly is continued until the lock washer 3 and the limiting saw teeth are tightly matched together. The lock washer 3 is in a ring-shaped ladder shape, and each ladder transverse surface of the lock washer 3 has a certain downward inclination, so that the ring shape of the lock washer 3 is ensured, and meanwhile, the lock washer is matched with the sawtooth inclination on the coat nut 2 and the through 4, so that the lock washer and the through nut are tightly matched. In addition, limit saw teeth on the coat nut 2 and the through 4 are matched with the lock washer 3 to restrain, and axial pressure is applied by bolt pretightening force, so that circumferential displacement and axial displacement between the lock washer and the saw teeth are limited.
The novel gasket pipeline joint connection structure must be provided with the following parts: the anti-loosening device comprises a flat nozzle 1, a sleeve nut 2, a lock washer 3 and a straight through 4; the flat nozzle 1 in the technical scheme of the utility model is consistent with the traditional flat nozzle in design and materials; the limit serrations on the jacknut 2 and the through-going 4 may be manufactured by grinding. The lock washer 3 may be stamped from a flat washer.
The utility model relates to a gasket type pipeline joint thread anti-loosening structure, which comprises the following steps:
the utility model aims to provide a novel anti-loosening gasket pipeline joint connection structure which is used in the field of anti-loosening of pipeline joints of mechanical equipment and has the advantages of reliable anti-loosening and convenient installation and disassembly.
The novel anti-loose washer pipeline connection structure is shown in the part diagrams of fig. 1 to 6. In the connecting process, the flat pipe nozzle 1 is connected with the outer sleeve nut 2 through threads, one part of the straight through 4 stretches into the flat pipe nozzle 1, the other part of the straight through 4 is connected with the outer sleeve nut 2 through threads, and the threads are possibly loosened when being excited by forced vibration or internal fluid, so that the tightness of the pipe joint cannot be ensured. The lockwasher 3 is assembled between the coat nut 2 and the through 4, the surfaces of the lockwasher 3, which are in contact with the coat nut 2 and the through 4, are provided with saw teeth matched with each other, when the lockwasher is assembled, the coat nut 2 applies axial bolt pretightening force, the saw teeth of the coat nut 2, the lockwasher 3 and the through 4 can interfere with each other in a loosening direction, further circumferential displacement between the coat nut 2 and the through 4 pipe is limited, and the aim of locking the threaded connection between the coat nut 2 and the through 4 is achieved. When the anti-loosening device is disassembled, the larger wrenching moment can lead the anti-loosening washer 3 to be unstable in the circumferential direction, and the washer is deformed to separate the interfered saw teeth. When the lock washer is assembled again, a new lock washer 3 needs to be replaced.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (4)
1. A washer-type pipe joint thread anti-loosening structure, comprising: the anti-loosening device comprises a flat nozzle (1), an outer sleeve nut (2), a locking washer (3) and a straight through (4), wherein the flat nozzle (1) is connected with the outer sleeve nut (2);
the end part of the coat nut (2) in the direction of the lock washer (3) is provided with first limiting saw teeth (5), the first limiting saw teeth (5) are in a stepped annular shape, and saw teeth on the first limiting saw teeth (5) are inclined surfaces;
the end part of the straight through (4) in the direction of the anti-loosening washer (3) is provided with a second limiting saw tooth (6), the second limiting saw tooth (6) is a stepped annular shape, and saw teeth on the second limiting saw tooth (6) are inclined surfaces;
the direction of the first limiting saw teeth (5) on the outer sleeve nut (2) is opposite to the direction of the second limiting saw teeth (6) on the straight-through nut (4).
2. A washer-type pipe joint thread anti-loosening structure according to claim 1, wherein a part of the through (4) extends into the flat nozzle (1), and the other part of the through (4) is screwed with the coat nut (2).
3. A washer-type line coupling thread locking structure according to claim 1, characterized in that the serration slope on the first limit serration (5) and the second limit serration (6) is matched with the serration structure on the locking washer (3).
4. The washer-type line joint thread locking structure according to claim 1, wherein the saw tooth shape on the first limit saw tooth (5), the second limit saw tooth (6) and the locking washer (3) further comprises a quadrangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321171178.3U CN219933230U (en) | 2023-05-16 | 2023-05-16 | Washer type pipeline joint thread anti-loosening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321171178.3U CN219933230U (en) | 2023-05-16 | 2023-05-16 | Washer type pipeline joint thread anti-loosening structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219933230U true CN219933230U (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321171178.3U Active CN219933230U (en) | 2023-05-16 | 2023-05-16 | Washer type pipeline joint thread anti-loosening structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219933230U (en) |
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2023
- 2023-05-16 CN CN202321171178.3U patent/CN219933230U/en active Active
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