CN218883288U - Bellows telescoping device - Google Patents
Bellows telescoping device Download PDFInfo
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- CN218883288U CN218883288U CN202320008243.4U CN202320008243U CN218883288U CN 218883288 U CN218883288 U CN 218883288U CN 202320008243 U CN202320008243 U CN 202320008243U CN 218883288 U CN218883288 U CN 218883288U
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Abstract
The application provides a bellows telescoping device belongs to the bellows and connects the field. The bellows telescoping device includes outer tube and interior sleeve pipe. The front end of the outer sleeve is provided with a front flange suitable for being butted with a front pipe; the inner sleeve is axially and slidably sleeved in the inner sleeve, and the rear end of the inner sleeve is provided with a rear flange suitable for being in butt joint with the rear pipe; wherein, the outer sleeve is sleeved and fixed with an outer corrugated pipe, and the inner sleeve is sleeved and fixed with an inner corrugated pipe; be equipped with limit structure between outer bellows and the interior bellows, limit structure restriction outer tube and interior sheathed tube axial relative position to prevent interior sleeve pipe and outer tube separation, adopt outer tube and the mode that interior sleeve pipe cup jointed to realize flexible, flexible length is bigger, establishes at outer sleeve pipe overcoat and is fixed with outer bellows, and interior sleeve pipe endotheca is established and is fixed with interior bellows, has increased overall structure's intensity, does not have the part moreover and warp, and life is longer.
Description
Technical Field
The application belongs to the technical field of bellows is connected, more specifically says, relates to a bellows telescoping device.
Background
The steel buckled plate is a novel building material, and the ductility of steel buckled plate itself is good, anti deformability is strong, and the installation is swiftly convenient simultaneously, saves the time limit for a project, still has with low costs, does benefit to advantages such as environmental protection, consequently in traffic engineering and municipal works, adopts steel buckled plate preparation culvert, tunnel, underpass and underground piping in a large number to become a trend.
The bellows is subjected to expansion and contraction deformation due to temperature change during use, and length compensation is often required due to installation, butt joint and the like during construction of the bellows, so that an expansion joint needs to be arranged in a bellows pipeline to enable the bellows to expand and contract to a certain degree. The existing expansion joint is generally a section of corrugated pipe which is easy to expand and deform, the expansion joint is connected into an original corrugated pipe, and the expansion of the whole pipe is realized through the expansion and contraction of the expansion joint. However, such a telescopic joint has a limited telescopic length, and is flexible, weak in strength, and easily damaged in order to be able to extend and retract the length.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present application provides a bellows expansion device to solve the technical problems that the expansion joint in the prior art has a limited expansion length, poor strength and is easy to damage.
In order to achieve the purpose, the technical scheme adopted by the application is as follows:
in one aspect, a bellows extension and retraction device is provided, comprising:
the front end of the outer sleeve is provided with a front flange suitable for being butted with a front pipe; and
the inner sleeve is sleeved in the inner sleeve in an axial sliding manner, and the rear end of the inner sleeve is provided with a rear flange suitable for being in butt joint with the rear pipe;
the outer corrugated pipe is fixedly sleeved outside the outer sleeve, and the inner corrugated pipe is fixedly sleeved inside the inner sleeve; and a limiting structure is arranged between the outer corrugated pipe and the inner corrugated pipe and limits the axial relative position of the outer sleeve and the inner sleeve so as to prevent the inner sleeve from being separated from the outer sleeve.
In some embodiments, the forward flange is located outboard of the forward end of the outer sleeve, and the forward end of the outer bellows extends to connect with the forward flange.
In some embodiments, the rear flange is located outside the rear end of the inner sleeve, the inner edge of the rear flange protrudes from the inside of the rear end of the inner sleeve, and the rear end of the inner bellows extends to the inner edge of the rear flange.
In some embodiments, the rear end of the outer sleeve is provided with a middle flange;
the limiting structure comprises a limiting rod, one end of the limiting rod is a fixed end, the other end of the limiting rod is a sliding end, and an extending limiting part is arranged on the limiting rod;
the limiting rod is arranged along the sliding direction of the inner sleeve, one of the middle flange and the rear flange fixes the fixed end of the limiting rod, and the other one of the middle flange and the rear flange is penetrated by the sliding end of the limiting rod and is limited on the far side by the extending limiting part.
In some embodiments, the fixed end of the limiting rod is fixed to the middle flange, and the sliding end of the limiting rod penetrates through the rear flange and is limited by the extension limiting part on the side far away from the middle flange.
In some embodiments, the stop formations are distributed in plurality circumferentially along the inner sleeve.
In some embodiments, a waterproof sealing gasket is arranged between the inner wall of the outer sleeve and the outer wall of the inner sleeve in a cushioning manner, and the inner edge of the middle flange protrudes out of the inner wall of the outer sleeve and forms a sealing limiting part limited at the rear end of the waterproof sealing gasket.
In some embodiments, a waterproof sealing gasket is padded between the inner wall of the outer sleeve and the outer wall of the inner sleeve, and the waterproof sealing gasket is fixed on the inner wall of the outer sleeve.
In some embodiments, the outer sleeve comprises a plurality of outer arc-shaped units which are distributed in sequence in the circumferential direction, and the circumferential ends of the adjacent outer arc-shaped units are connected through an outer circumferential connecting flange;
the outer corrugated pipe comprises a plurality of outer arc-shaped corrugated plates which are sequentially distributed in the circumferential direction, each outer arc-shaped corrugated plate is fixedly attached to the outer side of each outer arc-shaped unit, and the circumferential end part of each outer arc-shaped corrugated plate is connected with the outer circumferential connecting flange of the outer arc-shaped unit;
the front flange comprises a plurality of front arc-shaped strip portions which are sequentially distributed in the circumferential direction, and each front arc-shaped strip portion is fixed at the front end of each outer arc-shaped unit;
the middle flange comprises a plurality of middle arc-shaped strip portions which are sequentially distributed in the circumferential direction, and each middle arc-shaped strip portion is fixed at the front end of each outer arc-shaped unit;
the front end and the rear end of the outer circumferential connecting flange are respectively connected with the front arc-shaped strip portion and the middle arc-shaped strip portion.
In some embodiments, the inner sleeve comprises a plurality of inner arc-shaped units which are distributed in sequence in the circumferential direction, and the circumferential ends of the adjacent inner arc-shaped units are connected through an inner circumferential connecting flange;
the inner corrugated pipe comprises a plurality of inner arc-shaped corrugated plates which are sequentially distributed in the circumferential direction, each inner arc-shaped corrugated plate is fixedly attached to the inner side of each inner arc-shaped unit, and the circumferential end part of each inner arc-shaped corrugated plate is connected with the inner circumferential connecting flange of the inner arc-shaped unit;
the rear flange comprises a plurality of rear arc-shaped strip portions which are sequentially distributed in the circumferential direction, and each rear arc-shaped strip portion is fixed at the rear end of each inner arc-shaped unit;
the rear end of the inner circumferential connecting flange is connected with the rear arc-shaped strip portion.
The beneficial effect of bellows telescoping device that this application embodiment provided lies in: compared with the prior art, the bellows telescoping device of this application embodiment adopts outer tube and interior sleeve pipe to cup joint's mode to realize flexible, and flexible length is bigger, establishes at the outer tube overcoat and is fixed with outer bellows, and interior sleeve pipe endotheca is established and is fixed with interior bellows, has increased overall structure's intensity, does not have the part to warp moreover, and life is longer.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic cross-sectional structural view of a bellows expansion device provided in an embodiment of the present application;
FIG. 2 is a view of the bellows extension device of FIG. 1 after expansion;
FIG. 3 is an installation state view of the bellows expansion device of FIG. 1;
FIG. 4 is a schematic diagram of the outer arc unit of the outer sleeve of the bellows expansion device of FIG. 1;
fig. 5 is a schematic structural view of an inner arc unit of an inner tube of the bellows expansion device of fig. 1.
Wherein, in the figures, the respective reference numerals:
1-outer sleeve; 11-a front flange; 111-a front arc strip; 12-an outer bellows; 121-outer arc corrugated plate; 13-a middle flange; 131-middle arc-shaped strip portions; 14-a seal limiting part; 15-waterproof sealing gasket; 16-an outer arc unit; 17-an outer circumferential attachment flange; 2-inner sleeve; 21-rear flange; 211-a rear arc-shaped strip; 22-inner bellows; 221-inner arc corrugated plate; 23-inner arc unit; 24-an inner circumferential attachment flange 24; 3-a limiting rod; 31-an elongation-limiting part; 4-the corrugated pipe to be connected.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1 to 5, a bellows expansion device according to an embodiment of the present application will be described. A bellows expansion device comprising:
the front end of the outer sleeve 1 is provided with a front flange 11 suitable for being butted with a front pipe; and
the inner sleeve 2 is sleeved in the inner sleeve 2 in an axial sliding manner, and the rear end of the inner sleeve is provided with a rear flange 21 suitable for being in butt joint with a rear pipe;
wherein, the outer sleeve 1 is externally sleeved and fixed with an outer corrugated pipe 12, and the inner sleeve 2 is internally sleeved and fixed with an inner corrugated pipe 22; a limiting structure is arranged between the outer corrugated pipe 12 and the inner corrugated pipe 22, and the limiting structure limits the axial relative positions of the outer sleeve 1 and the inner sleeve 2 so as to prevent the inner sleeve 2 from being separated from the outer sleeve 1.
Compared with the prior art, the bellows telescoping device of this application embodiment adopts outer tube 1 and interior sleeve pipe 2 to cup joint the mode to realize flexible, and flexible length is bigger, establishes to be fixed with outer bellows 12 at outer tube 1 overcoat, and interior sleeve pipe 2 endotheca is established and is fixed with interior bellows 22, has increased overall structure's intensity, does not have the part deformation moreover, and life is longer.
It should be noted that: in use, the two ends of the bellows expansion device are respectively connected with the end parts of the two bellows, and the two ends are not fixed front and back. The following description is given for illustrative purposes only and is not particularly limited.
Referring to fig. 1 to 4, as an embodiment of the bellows expansion device provided by the present application, a front flange 11 is located outside a front end of an outer sleeve 1, and a front end of an outer bellows 12 extends to be connected to the front flange 11. Making the overall strength higher.
In a specific implementation, the outer bellows 12 has the same length as the outer sleeve 1, and the outer bellows 12 covers the entire outer sleeve 1.
Referring to fig. 1 to 3 and 5, as an embodiment of the bellows expansion device provided in the present application, the rear flange 21 is located outside the rear end of the inner sleeve 2, the inner edge of the rear flange 21 protrudes from the inner side of the rear end of the inner sleeve 2, and the rear end of the inner bellows 22 extends to the inner edge of the rear flange 21. Making the overall strength higher.
In a specific implementation, the inner bellows 22 is of the same length as the inner jacket tube 2, the inner bellows 22 covering the entire inner jacket tube 2.
Referring to fig. 1 to 4, as an embodiment of the bellows expansion device provided in the present application, a middle flange 13 is disposed at a rear end of an outer sleeve 1;
the limiting structure comprises a limiting rod 3, one end of the limiting rod 3 is a fixed end, the other end of the limiting rod 3 is a sliding end and is provided with an extending limiting part 31;
the stopper rod 3 is provided along the sliding direction of the inner tube 2, and one of the middle flange 13 and the rear flange 21 fixes the fixed end of the stopper rod 3, and the other is penetrated by the sliding end of the stopper rod 3 and is stopped at the remote side by the elongated stopper portion 31.
In some embodiments, the inner sleeve 2 slides in the outer sleeve 1 in the front-rear direction, the rear end of the limiting rod 3 is fixed on the rear flange 21 through a nut, the front end passes through the middle flange 13 and then is fixed with a nut, and the nut is used as an extension limiting part 31 and is limited on the front side of the middle flange 13.
Referring to fig. 1 to 3, as an embodiment of the bellows expansion device provided by the present application, a fixed end of the limiting rod 3 is fixed to the middle flange 13, and a sliding end of the limiting rod 3 penetrates through the rear flange 21 and is limited by the extension limiting portion 31 at a side away from the middle flange 13.
In a specific implementation, the inner sleeve 2 slides in the outer sleeve 1 in the front-back direction, the front end of the limiting rod 3 is fixed on the middle flange 13 through a nut, the rear end of the limiting rod passes through the rear flange 21 and then is fixed with a nut, and the nut is limited on the rear side of the middle flange 13 as the extension limiting part 31.
Referring to fig. 1 to 3, as an embodiment of the bellows expansion device provided in the present application, a plurality of limiting structures are distributed along the circumferential direction of the inner sleeve 2.
In this embodiment, including 2 ascending a plurality of positions of sleeve pipe circumference, spacing is carried on interior sleeve pipe 2 and outer tube 1 to limit structure, and the structure is more reasonable, avoids interior sleeve pipe 2 local to deviate from outer tube 1.
Referring to fig. 1 to 4, as an embodiment of the bellows expansion device provided by the present application, a waterproof gasket 15 is disposed between an inner wall of the outer sleeve 1 and an outer wall of the inner sleeve 2, and an inner edge of the middle flange 13 protrudes from the inner wall of the outer sleeve 1 and forms a sealing limiting portion 14 limited at a rear end of the waterproof gasket 15.
In this embodiment, the inner sleeve 2 is prevented from taking the waterproof gasket 15 out of the outer sleeve 1.
In a specific implementation, the middle flange 13 is in a flat ring shape, most of the outer periphery of the middle flange is located outside the outer sleeve 1 and is provided with a connecting hole, and only a small part of the inner edge of the middle flange protrudes out of the inner wall of the outer sleeve 1.
Referring to fig. 1 to 4, as an embodiment of the bellows expansion device provided by the present application, a waterproof gasket 15 is disposed between an inner wall of the outer sleeve 1 and an outer wall of the inner sleeve 2, and the waterproof gasket 15 is fixed on the inner wall of the outer sleeve 1.
In this embodiment, the waterproof gasket 15 is located between the outer sleeve 1 and the inner sleeve 2, and plays a role in waterproof sealing. The waterproof sealing gasket 15 is fixed on the inner wall of the outer sleeve 1 to prevent falling off in the sliding process.
When the inner edge of the middle flange 13 forms the seal limiting part 14, the waterproof gasket 15 is positioned on the inner wall of the rear end of the outer sleeve 1, and the rear end abuts against the seal limiting part 14.
Referring to fig. 4, as a specific embodiment of the bellows expansion device provided in the present application, the outer sleeve 1 includes a plurality of outer arc units 16 sequentially distributed in a circumferential direction, and circumferential ends of adjacent outer arc units 16 are connected by an outer circumferential connecting flange 17; the outer corrugated pipe 12 comprises a plurality of outer arc-shaped corrugated plates 121 which are sequentially distributed in the circumferential direction, each outer arc-shaped corrugated plate 121 is attached and fixed to the outer side of each outer arc-shaped unit 16, and the circumferential end of each outer arc-shaped corrugated plate 121 is connected with the outer circumferential connecting flange 17 of the outer arc-shaped unit 16; the front flange 11 includes a plurality of front arc-shaped strip portions 111 that are sequentially distributed in the circumferential direction, and each front arc-shaped strip portion 111 is fixed to the front end of each outer arc-shaped unit 16; the middle flange 13 comprises a plurality of middle arc-shaped strip portions 131 which are sequentially distributed in the circumferential direction, and each middle arc-shaped strip portion 131 is respectively fixed at the front end of each outer arc-shaped unit; the front and rear ends of the outer circumferential connecting flange 17 are connected to the front arc-shaped strip portion 111 and the middle arc-shaped strip portion 131, respectively.
In the embodiment, the outer sleeve 1 is divided into a plurality of outer arc-shaped units 16, so that the processing and the transportation are more convenient; the circumferential end of each outer arc corrugated plate 121 is connected with the outer circumferential connecting flange 17 of the outer arc unit 16, and the front end and the rear end of the outer circumferential connecting flange 17 are connected with the front arc strip 111 and the middle arc strip 131 respectively to form a frame structure, so that the whole structure is more stable.
In a specific implementation, the outer arc-shaped corrugated plate 121 is attached and fixed to the outer side of the outer arc-shaped unit 16 based on the outer arc-shaped unit 16. The circumferential two ends of the outer arc-shaped unit 16 are respectively provided with a flange strip as an outer circumferential connecting flange 17, and the circumferential two ends of the outer arc-shaped corrugated plate 121 are also fixed with the two outer circumferential connecting flanges 17. A curved flange strip is attached to the front end of the outer curved unit 16 as a front curved strip portion 111, and the front end of the outer curved corrugated plate 121 may be fixed to the front curved strip portion 111. An arc-shaped flange strip is attached to the rear end of the outer arc unit 16 as the middle arc strip portion 131, and the rear end of the outer arc corrugation plate 121 may be fixed to the middle arc strip portion 131. More specifically, each of the outer arc unit 16, the outer arc corrugated plate 121, the front arc strip 111, and the middle arc strip 131 is a semi-circular arc.
When the outer arc units 16 are circumferentially connected by the outer circumferential connecting flange 17 to form the cylindrical outer sleeve 1, the outer corrugated plates 121 are respectively spliced to form the outer corrugated pipe 12, the front arc-shaped strip portions 111 are respectively spliced to form the front flange 11, and the middle arc-shaped strip portions 131 are respectively spliced to form the middle flange 13.
Referring to fig. 5, as a specific embodiment of the bellows expansion device provided in the present application, the inner sleeve 2 includes a plurality of inner arc units 23 sequentially distributed in the circumferential direction, and circumferential ends of adjacent inner arc units 23 are connected by an inner circumferential connecting flange 24; the inner corrugated pipe 22 comprises a plurality of inner arc-shaped corrugated plates 221 which are sequentially distributed in the circumferential direction, each inner arc-shaped corrugated plate 221 is attached and fixed to the inner side of each inner arc-shaped unit 23, and the circumferential end part of each inner arc-shaped corrugated plate 221 is connected with the inner circumferential connecting flange 24 of the inner arc-shaped unit 23; the rear flange 21 comprises a plurality of rear arc-shaped strip portions 211 which are sequentially distributed in the circumferential direction, and each rear arc-shaped strip portion 211 is fixed at the rear end of each inner arc-shaped unit 23; the rear end of the inner circumferential connecting flange 24 is connected to the rear arc-shaped strip portion 211.
In the embodiment, the inner sleeve 2 is divided into a plurality of inner arc-shaped units 23, so that the inner sleeve is more convenient to process and transport; the circumferential end parts of the inner arc-shaped corrugated plates 221 are respectively connected with the inner circumferential connecting flange 24 of the inner arc-shaped unit 23, and the rear end of the inner circumferential connecting flange 24 is connected with the rear arc-shaped strip part 211 to form a frame structure, so that the whole structure is more stable.
In a specific implementation, the inner arc-shaped corrugated plate 221 is attached and fixed to the inner side of the inner arc-shaped unit 23 on the basis of the inner arc-shaped unit 23. Flanges are respectively arranged at the two circumferential ends of the inner arc-shaped unit 23 to serve as inner circumferential connecting flanges 24, and the two circumferential ends of the inner arc-shaped corrugated plates 221 are also fixed with the two inner circumferential connecting flanges 24. An arc-shaped flange strip is attached to the rear end of the inner arc-shaped unit 23 as the rear arc-shaped strip portion 211, and the rear end of the inner arc-shaped corrugated plate 221 may be fixed to the rear arc-shaped strip portion 211. More specifically, the inner arc unit 23, the inner arc corrugation plates 221, and the rear arc stripe portions 211 are all in a semi-circular arc shape.
When the inner cylindrical sleeves 2 are formed by circumferentially connecting the inner arc units 23 through the inner circumferential connecting flange 24, the inner corrugated pipes 22 are formed by splicing the inner arc corrugated plates 221, and the rear flange 21 is formed by splicing the rear arc strip portions 211.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. Bellows telescoping device, its characterized in that includes:
the front end of the outer sleeve is provided with a front flange suitable for being butted with a front pipe; and
the inner sleeve is sleeved in the inner sleeve in an axial sliding manner, and the rear end of the inner sleeve is provided with a rear flange suitable for being in butt joint with the rear pipe;
the outer sleeve is fixedly sleeved with an outer corrugated pipe, and the inner sleeve is fixedly sleeved with an inner corrugated pipe; and a limiting structure is arranged between the outer corrugated pipe and the inner corrugated pipe and limits the axial relative position of the outer sleeve and the inner sleeve so as to prevent the inner sleeve from being separated from the outer sleeve.
2. A bellows expansion device according to claim 1, wherein said front flange is located outside a front end of said outer sleeve, said outer bellows front end extending to connect with said front flange.
3. A bellows expansion device according to claim 1, wherein said rear flange is located outside the rear end of said inner sleeve, the inner edge of said rear flange projecting inside the rear end of said inner sleeve, the rear end of said inner bellows extending to the inner edge of said rear flange.
4. A bellows expansion device according to claim 1, wherein said outer sleeve has a central flange at a rear end thereof;
the limiting structure comprises a limiting rod, one end of the limiting rod is a fixed end, the other end of the limiting rod is a sliding end, and an extending limiting part is arranged on the limiting rod;
the limiting rod is arranged along the sliding direction of the inner sleeve, one of the middle flange and the rear flange fixes the fixed end of the limiting rod, and the other one of the middle flange and the rear flange is penetrated by the sliding end of the limiting rod and is limited on the far side by the extending limiting part.
5. A bellows expansion device according to claim 4, wherein a fixed end of said stopper rod is fixed to said middle flange, and a sliding end of said stopper rod penetrates said rear flange and is held by said elongation holding portion at a side remote from said middle flange.
6. A bellows expansion device according to claim 1, wherein said limiting structure is distributed in a plurality along the circumference of said inner sleeve.
7. A bellows expansion device according to claim 4, wherein a waterproof gasket is provided between an inner wall of the outer sleeve and an outer wall of the inner sleeve, and an inner edge of the middle flange protrudes from an inner wall of the outer sleeve and forms a seal limiting portion limited at a rear end of the waterproof gasket.
8. A bellows expansion device according to claim 1, wherein a waterproof gasket is padded between the inner wall of said outer sleeve and the outer wall of said inner sleeve, said waterproof gasket being fixed to the inner wall of said outer sleeve.
9. A bellows expansion device according to claim 4, wherein said outer sleeve comprises a plurality of outer arc units circumferentially distributed in sequence, and circumferential ends of adjacent outer arc units are connected by an outer circumferential connecting flange;
the outer corrugated pipe comprises a plurality of outer arc-shaped corrugated plates which are sequentially distributed in the circumferential direction, each outer arc-shaped corrugated plate is fixedly attached to the outer side of each outer arc-shaped unit, and the circumferential end part of each outer arc-shaped corrugated plate is connected with the outer circumferential connecting flange of the outer arc-shaped unit;
the front flange comprises a plurality of front arc-shaped strip portions which are sequentially distributed in the circumferential direction, and each front arc-shaped strip portion is fixed at the front end of each outer arc-shaped unit;
the middle flange comprises a plurality of middle arc-shaped strip portions which are sequentially distributed in the circumferential direction, and each middle arc-shaped strip portion is fixed at the front end of each outer arc-shaped unit;
the front end and the rear end of the outer circumferential connecting flange are respectively connected with the front arc-shaped strip portion and the middle arc-shaped strip portion.
10. The bellows expansion device according to claim 4, wherein said inner sleeve comprises a plurality of inner arc-shaped units distributed in sequence in the circumferential direction, and circumferential ends of adjacent inner arc-shaped units are connected by an inner circumferential connecting flange;
the inner corrugated pipe comprises a plurality of inner arc-shaped corrugated plates which are sequentially distributed in the circumferential direction, each inner arc-shaped corrugated plate is fixedly attached to the inner side of each inner arc-shaped unit, and the circumferential end part of each inner arc-shaped corrugated plate is connected with the inner circumferential connecting flange of the inner arc-shaped unit;
the rear flange comprises a plurality of rear arc-shaped strip portions which are sequentially distributed in the circumferential direction, and each rear arc-shaped strip portion is fixed at the rear end of each inner arc-shaped unit;
the rear end of the inner circumferential connecting flange is connected with the rear arc-shaped strip portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320008243.4U CN218883288U (en) | 2023-01-04 | 2023-01-04 | Bellows telescoping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320008243.4U CN218883288U (en) | 2023-01-04 | 2023-01-04 | Bellows telescoping device |
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| Publication Number | Publication Date |
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| CN218883288U true CN218883288U (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320008243.4U Active CN218883288U (en) | 2023-01-04 | 2023-01-04 | Bellows telescoping device |
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| CN (1) | CN218883288U (en) |
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- 2023-01-04 CN CN202320008243.4U patent/CN218883288U/en active Active
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