CN216479423U - Expansion locking ring for fire-fighting pipeline connecting piece - Google Patents
Expansion locking ring for fire-fighting pipeline connecting piece Download PDFInfo
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- CN216479423U CN216479423U CN202120261367.4U CN202120261367U CN216479423U CN 216479423 U CN216479423 U CN 216479423U CN 202120261367 U CN202120261367 U CN 202120261367U CN 216479423 U CN216479423 U CN 216479423U
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- locking ring
- locking
- fire
- expansion
- ring body
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Abstract
The expansion locking ring comprises a locking ring body and a hollow pipe cavity formed by surrounding the locking ring body, wherein the outer peripheral surface of the locking ring body comprises a first conical surface in a conical shape, and the locking ring body further comprises an extension surface which is overlapped with the bottom surface of the first conical surface and extends on the basis of the bottom surface. The extension surface can be a conical surface or a cylindrical surface, a through cutting groove is formed in the lock ring body, and the inner wall of the hollow cavity is provided with lock teeth. The utility model forms the double-cone-shaped structure expansion locking ring by taking the bottom surface of the locking ring with the cone-shaped structure as the symmetrical surface, fully absorbs the radial force from the locking nut to enable the inserted pipeline to be tightly held by force, cannot be separated from the connecting piece due to high pressure, and simultaneously effectively transmits the axial force of the locking nut to the sealing piece, thereby strengthening the sealing effect.
Description
Technical Field
The utility model relates to a locking device used in a pipeline connecting piece for conveying fluid for fastening the end part of a pipeline to be connected in the connecting piece, in particular to an expansion locking ring of a fire-fighting pipeline connecting piece.
Background
The locking piece used in the fire-fighting pipeline connecting piece in the prior art usually uses a locking ring with a conical surface structure, and the pipe connecting socket disclosed in the Chinese patent CN107148529B adopts an arm ring (locking ring) with a single conical structure to match with a locking nut to clamp the pipeline extending into the connecting piece, and simultaneously, a conical gasket arranged in a conical port of a pipe body is extruded through a gasket to realize sealing. Chinese patent CN1611825A discloses a "pipe connection" which uses a conical annular core member having a plurality of guide portions with spaced apart bores between the guide portions for receiving locking members.
Disclosure of Invention
The utility model provides an expansion locking ring for a fire-fighting pipeline connecting piece, which comprises a locking ring body, wherein the locking ring body is provided with a hollow pipe cavity, the outer peripheral surface of the locking ring body comprises a first conical surface, and the expansion locking ring is characterized by further comprising an extension surface which is overlapped with the bottom surface of the first conical surface and extends on the basis of the bottom surface.
The expansion locking ring of the fire-fighting pipeline connecting piece is characterized in that the extension surface is a second conical surface which is symmetrical with the first conical surface by the bottom surface.
The expansion lock ring of the fire-fighting pipeline connecting piece is characterized in that the extension surface is a cylindrical surface.
The expansion lock ring for the fire-fighting pipeline connecting piece is characterized in that a through cutting groove is formed in the expansion lock ring body.
The expansion lock ring for the fire-fighting pipeline connecting piece is characterized in that the wall of the hollow pipe cavity (5) is provided with lock teeth.
The expansion lock ring for the fire-fighting pipeline connecting piece is characterized in that the lock teeth are open-loop lock teeth surrounding the wall of the hollow pipe cavity.
The expansion locking ring for the fire-fighting pipeline connecting piece is characterized in that the locking teeth are disconnected locking teeth surrounding the wall of the hollow pipe cavity.
According to the expansion locking ring for the fire-fighting pipeline connecting piece, the locking ring with the conical structure is formed into the double-conical-structure expansion locking ring by taking the bottom surface as the symmetrical surface, so that the radial force from the locking nut is completely absorbed to enable the inserted pipeline to be tightly held, the connecting piece cannot be separated from the high pressure, meanwhile, the axial force of the locking nut is transmitted to the sealing piece more inefficiently, and the sealing effect can be enhanced.
Drawings
FIG. 1 is a schematic view of a double tapered expanding locking collar structure;
FIG. 2 is a horizontally disposed elevational view of the double-tapered expanding locking collar of FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic view of an expanded locking collar having a cylindrical outer surface;
FIG. 5 is a horizontally disposed front elevational view of the expanding locking collar of FIG. 4;
fig. 6 is a sectional view B-B of fig. 5.
In the figure, 1-second tapered surface; 2-a first conical surface; 3-cutting a groove; 4-open ring lock teeth; 5-a hollow lumen; 6-cylindrical surface; 7-breaking the locking teeth; 8-locking ring body.
Detailed Description
The present invention is described in detail below with reference to the attached drawings.
The utility model discloses an expansion locking ring for a fire-fighting pipeline connecting piece, which comprises a locking ring body 8, wherein the inside of the locking ring body is a hollow pipe cavity 5, the outside of the locking ring body is provided with a tapered outer peripheral surface, namely a first tapered surface 2, the bottom of the first tapered surface extends outwards and forms a second tapered surface 1 by taking the bottom surface as a symmetrical surface, the first tapered surface and the second tapered surface form a structural body of the expansion locking ring together, the expansion locking ring body is provided with a through cutting groove 3, and the expansion locking ring body is made into an expansion locking ring with an elastic structure through the cutting groove. The inner peripheral surface of a hollow tube cavity wall in the expansion lock ring, namely the inner peripheral surface of the expansion lock ring, is a cylindrical surface, the inner peripheral surface is provided with lock teeth, the lock teeth comprise open-loop lock teeth 4 or disconnection lock teeth 7, the open-loop lock teeth 4 shown in figure 1 are bulges surrounding the inner peripheral surface, and the open-loop lock teeth are disconnected from the cutting groove and are called open-loop lock teeth.
In fig. 4-6, the bottom extension of the first conical surface 2 is a cylindrical surface 6, i.e. the outer circumferential surface of the expanded locking collar body is composed of a cylindrical surface and a conical surface, the expanded locking collar body still has a cylindrical hollow lumen therein, i.e. the inner circumferential surface is a cylindrical surface, in the figure, there are locking teeth surrounding the cylindrical surface in the hollow lumen, and the locking teeth are discontinuous locking teeth, i.e. breaking locking teeth 7.
Claims (7)
1. An expansion locking ring for a fire-fighting pipeline connecting piece comprises a locking ring body (8), wherein the locking ring body is provided with a hollow pipe cavity (5), the outer peripheral surface of the locking ring body comprises a first conical surface (2), and the expansion locking ring is characterized by further comprising an extension surface which is overlapped with the bottom surface of the first conical surface and extends on the basis of the bottom surface.
2. The expanding locking collar of fire-fighting pipe connection according to claim 1, characterized in that the extension surface is a second conical surface (1) that is bottom-symmetrical to the first conical surface (2).
3. The expanding locking collar of claim 1, wherein said extension surface is a cylindrical surface (6).
4. A fire hose connector expanding shackle according to claim 1, 2 or 3, characterised in that the expanding shackle body has a through cut out slot (3).
5. The expansion locking ring for fire-fighting pipe connection according to claim 4, characterized in that the wall of the hollow pipe cavity (5) is provided with locking teeth.
6. The fire service coupling expansion locking ring according to claim 5, wherein the locking teeth are open ring locking teeth (4) around the wall of the hollow pipe.
7. The fire service coupling expansion locking collar of claim 5, wherein the locking teeth are break locking teeth (7) around the wall of the hollow pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120261367.4U CN216479423U (en) | 2021-01-29 | 2021-01-29 | Expansion locking ring for fire-fighting pipeline connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120261367.4U CN216479423U (en) | 2021-01-29 | 2021-01-29 | Expansion locking ring for fire-fighting pipeline connecting piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216479423U true CN216479423U (en) | 2022-05-10 |
Family
ID=81394264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120261367.4U Active CN216479423U (en) | 2021-01-29 | 2021-01-29 | Expansion locking ring for fire-fighting pipeline connecting piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216479423U (en) |
-
2021
- 2021-01-29 CN CN202120261367.4U patent/CN216479423U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |