CN216742273U - Multistage telescopic cylinder - Google Patents
Multistage telescopic cylinder Download PDFInfo
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- CN216742273U CN216742273U CN202220204046.5U CN202220204046U CN216742273U CN 216742273 U CN216742273 U CN 216742273U CN 202220204046 U CN202220204046 U CN 202220204046U CN 216742273 U CN216742273 U CN 216742273U
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Abstract
The utility model provides a multi-stage telescopic cylinder which comprises a first cylinder barrel, wherein a first front cover and a rear cover are respectively arranged at the left end and the right end of the first cylinder barrel, a first air passage is arranged in the rear cover, one end of the first air passage is communicated with an inner cavity of the first cylinder barrel, the other end of the first air passage is communicated with the outside of the rear cover, a second air passage is arranged in the first front cover, one end of the second air passage is communicated with the inner cavity of the first cylinder barrel, and the other end of the second air passage is communicated with the outside of the first front cover; a plurality of second cylinder barrels which are sequentially nested are arranged in the first cylinder barrel, and a second front cover and a first piston are respectively arranged at the left end and the right end of each second cylinder barrel; a piston rod is arranged in the second cylinder at the innermost side, the left end of the piston rod penetrates out of a second front cover on the second cylinder at the innermost side, and a second piston in sliding connection with the second cylinder at the innermost side is arranged at the right end of the piston rod; the first piston is provided with a third air passage penetrating through the left end and the right end of the first piston, and the second cylinder is provided with an air hole. The utility model has small occupied space and long stroke, and is suitable for occasions with limited space and long stroke.
Description
Technical Field
The utility model belongs to the technical field of pneumatics, and particularly relates to a multistage telescopic cylinder.
Background
Various pneumatic elements developed by pneumatic technology are widely applied to production equipment or production lines of various industries. The cylinder belongs to the execute component, and its variety is various, and the cylinder on the existing market is mostly ordinary cylinder, and ordinary cylinder only has one-level stroke, and in some occasions that need longer stroke, the axial dimensions of the ordinary cylinder of being suitable for will be longer, needs great installation space, if the space of use scene is comparatively limited, then ordinary cylinder is difficult to install and use.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a multi-stage telescopic cylinder which is small in occupied space, long in stroke and suitable for occasions with limited space and long in stroke.
The utility model is realized by the following technical scheme:
a multi-stage telescopic cylinder comprises a first cylinder barrel, wherein a first front cover and a rear cover are respectively arranged at the left end and the right end of the first cylinder barrel, a first air passage is arranged in the rear cover, one end of the first air passage is communicated with an inner cavity of the first cylinder barrel, the other end of the first air passage is communicated with the outside of the rear cover, a second air passage is arranged in the first front cover, one end of the second air passage is communicated with the inner cavity of the first cylinder barrel, and the other end of the second air passage is communicated with the outside of the first front cover;
a plurality of second cylinder barrels which are nested in sequence are arranged in the first cylinder barrel, a second front cover and a first piston are respectively arranged at the left end and the right end of each second cylinder barrel, the left end of each second cylinder barrel positioned on the inner side penetrates out of the second front cover on the second cylinder barrel adjacent to the outer side of the second cylinder barrel, the first piston on the second cylinder barrel positioned on the inner side is movably arranged in the second cylinder barrel adjacent to the outer side of the first cylinder barrel, the left end of the second cylinder barrel on the outermost side penetrates out of the first front cover, and the first piston on the second cylinder barrel on the outermost side is arranged in the first cylinder barrel in a sliding mode;
a piston rod is arranged in the second cylinder barrel at the innermost side, the left end of the piston rod penetrates out of a second front cover on the second cylinder barrel at the innermost side, a second piston is arranged at the right end of the piston rod, and the second piston is arranged in the second cylinder barrel at the innermost side in a sliding manner;
the first piston is provided with a third air passage penetrating through the left end and the right end of the first piston, the second cylinder is provided with an air hole, when the first piston on the second cylinder on the outermost side is located at the rightmost end position, the air hole on the second cylinder on the outermost side is communicated with the inner cavity of the first cylinder, and when the first piston on the second cylinder on the inner side is located at the rightmost end position, the air hole on the second cylinder on the inner side is communicated with the inner cavity of the second cylinder adjacent to the outer side.
Furthermore, the right end of the first piston is provided with a first buffer gasket, the first buffer gasket is provided with a through hole communicated with a third air passage on the first piston connected with the first buffer gasket, and the right end of the second piston is provided with a second buffer gasket.
Furthermore, a first guide belt is arranged on the inner side wall of the first front cover, and a second guide belt is arranged on the inner side wall of the second front cover.
Furthermore, the inner side wall of the first front cover is provided with a first dustproof ring and a first shaft Y ring, the inner side wall of the second front cover on the innermost second cylinder is provided with a rod part sealing ring, and the inner side walls of the second front covers on the other second cylinders are provided with a second dustproof ring and a second shaft Y ring.
Furthermore, a third guide belt is arranged on the outer side wall of the first piston, and a fourth guide belt is arranged on the outer side wall of the second piston.
Furthermore, a first sealing ring is arranged between the first cylinder barrel and the first front cover and between the first cylinder barrel and the first piston, and a second sealing ring is arranged between the second cylinder barrel and the second front cover and between the second cylinder barrel and the first piston which are connected with the second cylinder barrel.
Furthermore, piston sealing rings are arranged on the outer side walls of the first piston and the second piston.
Compared with the prior art, the utility model has the beneficial effects that:
1. the first front cover and the first rear cover are respectively provided with a second air passage and a first air passage, when the first air passage is ventilated, air is communicated to the right end of the second piston to sequentially push out the piston rod and the second cylinder, when the second air passage is ventilated, the air is communicated to the left ends of the first piston and the second piston to sequentially retract the piston rod and the second cylinder into the first cylinder, and the extension of the multistage telescopic cylinder is realized;
2. the first air passage and the second air passage are fixed and do not follow up with the extension of the multi-stage telescopic cylinder, so that an air pipe for conveying compressed air cannot influence the operation of a load, and the air passage is more reliable and durable;
3. the arrangement of the plurality of second cylinder barrels is adopted, so that the multistage telescopic cylinder is small in occupied space and long in stroke, and is suitable for occasions with limited space and long strokes.
Drawings
FIG. 1 is a schematic structural view of a multi-stage telescopic cylinder according to the present invention;
FIG. 2 is an enlarged view of part A of FIG. 1;
fig. 3 is an enlarged schematic view of part B of fig. 1.
In the figure, 1-first cylinder barrel, 2-first front cover, 21-second air channel, 22-first guide belt, 23-first dustproof ring, 24-Y ring for first shaft, 3-rear cover, 31-first air channel, 4-second cylinder barrel, 41-air hole, 5-second front cover, 51-second guide belt, 52-rod sealing ring, 53-second dustproof ring, 54-Y ring for second shaft, 6-first piston, 61-third air channel, 62-third guide belt, 7-piston rod, 8-second piston, 81-fourth guide belt, 9-first buffer gasket, 10-second buffer gasket, 20-first sealing ring, 30-second sealing ring and 40-piston sealing ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be 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, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like refer to the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which the utility model product is conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not refer to or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Referring to fig. 1, 2 and 3, fig. 1 is a schematic structural view of a multi-stage telescopic cylinder according to the present invention, fig. 2 is an enlarged view of a portion a of fig. 1, and fig. 3 is an enlarged view of a portion B of fig. 1. A multi-stage telescopic cylinder comprises a first cylinder barrel 1, wherein a first front cover 2 and a rear cover 3 are respectively arranged at the left end and the right end of the first cylinder barrel 1, a first air passage 31 is arranged in the rear cover 3, one end of the first air passage 31 is communicated with an inner cavity of the first cylinder barrel 1, the other end of the first air passage 31 is communicated with the outside of the rear cover 3, a second air passage 21 is arranged in the first front cover 2, one end of the second air passage 21 is communicated with the inner cavity of the first cylinder barrel 1, and the other end of the second air passage 21 is communicated with the outside of the first front cover 2; a plurality of second cylinders 4 which are sequentially nested are arranged in the first cylinder barrel 1, the left end and the right end of each second cylinder 4 are respectively provided with a second front cover 5 and a first piston 6, the left end of the second cylinder 4 positioned on the inner side penetrates out of the second front cover 5 on the second cylinder 4 adjacent to the outer side of the second cylinder, the first piston 6 on the second cylinder 4 positioned on the inner side is movably arranged in the second cylinder 4 adjacent to the outer side of the second cylinder, the left end of the second cylinder 4 positioned on the outermost side penetrates out of the first front cover 2, and the first piston 6 on the second cylinder 4 positioned on the outermost side is arranged in the first cylinder barrel 1 in a sliding manner; a piston rod 7 is arranged in the innermost second cylinder 4, the left end of the piston rod 7 penetrates out of the second front cover 5 on the innermost second cylinder 4, the right end of the piston rod 7 is provided with a second piston 8, and the second piston 8 is arranged in the innermost second cylinder 4 in a sliding manner; the first piston 6 is provided with a third air passage 61 penetrating through the left end and the right end of the first piston, the second cylinder 4 is provided with an air hole 41, when the first piston 6 on the second cylinder 4 at the outermost side is positioned at the rightmost end position, the air hole 41 on the second cylinder 4 at the outermost side is communicated with the inner cavity of the first cylinder 1, and when the first piston 6 on the second cylinder 4 at the inner side is positioned at the rightmost end position, the air hole 41 on the second cylinder 4 at the inner side is communicated with the inner cavity of the second cylinder 4 adjacent to the outer side.
In an embodiment, a first cushion pad 9 is disposed at a right end of the first piston 6, a through hole communicated with the third air channel 61 of the first piston 6 connected to the first cushion pad 9 is formed in the first cushion pad 9, and a second cushion pad 10 is disposed at a right end of the second piston 8. Set up the buffer spacer, play buffering and absorbing effect, reduce first piston 6 to the rear end, first piston 6 to first piston 6 and second piston 8 to the impulsive force of first piston 6, avoid damaging.
In one embodiment, the first front cover 2 is provided with a first guide belt 22 on the inner side wall, and the second front cover 5 is provided with a second guide belt 51 on the inner side wall. The first guide belt 22 guides the expansion and contraction of the outermost second cylinder 4, and the second guide belt 51 guides the second cylinder 4 and the piston rod 7 in contact therewith. In one embodiment, the third guide belt 62 is provided on the outer side wall of the first piston 6, and the fourth guide belt 81 is provided on the outer side wall of the second piston 8. The third guide belt 62 guides the expansion and contraction of the first piston 6, and the fourth guide belt 81 guides the expansion and contraction of the second piston 8.
In one embodiment, the first dust ring 23 and the first Y-ring 24 are disposed on the inner sidewall of the first front cover 2, the rod portion sealing ring 52 is disposed on the inner sidewall of the second front cover 5 on the innermost second cylinder 4, and the second dust ring 53 and the second Y-ring 54 are disposed on the inner sidewalls of the second front covers 5 on the other second cylinders 4. This arrangement has a sealing function, and ensures the sealing between the first front cover 2 and the outermost second cylinder 4, between the second front cover 5 and the inner second cylinder 4, and between the innermost second front cover 5 and the piston rod 7. In one embodiment, a first sealing ring 20 is respectively arranged between the first cylinder 1 and the first front cover 2 and the rear cover 3, and a second sealing ring 30 is respectively arranged between the second cylinder 4 and the second front cover 5 and the first piston 6 connected with the second cylinder. This arrangement serves as a seal, ensuring tightness between the first cylinder 1 and the first front cover 2 and the rear cover 3, and between the second cylinder 4 and the second front cover 5 and the first piston 6 connected thereto. In one embodiment, piston seals 40 are provided on the outer side walls of the first and second pistons 6, 8. This arrangement serves as a seal ensuring tightness between the first piston 6 and the second cylinder 4 or the first cylinder 1 slidably disposed therewith, and tightness between the second piston 8 and the innermost second cylinder 4.
The use process of the multistage telescopic cylinder of the utility model is explained as follows:
the extending process of the multi-stage telescopic cylinder comprises the following steps: the compressed gas is continuously conveyed to the first air passage 31 through an external high-pressure gas source, enters the first cylinder barrel 1 from the first air passage 31 and sequentially passes through the third air passages 61 on the plurality of first pistons 6 to be communicated to the right end of the second piston 8, so that the second piston 8 is pushed leftwards through the compressed gas, the piston rod 7 extends leftwards, when the second piston 8 moves leftwards to be abutted against the second front cover 5 on the innermost second cylinder barrel 4, the second piston 8 drives the second front cover 5 abutted against the second piston 8 to move leftwards, so that the innermost second cylinder barrel 4 is driven to extend leftwards, when the first piston 6 on the innermost second cylinder barrel 4 moves leftwards to be abutted against the second front cover 5 on the second cylinder barrel 4 adjacent to the outer side of the innermost second piston, the first piston 6 on the innermost second cylinder barrel 4 drives the second front cover 5 abutted against the innermost second cylinder barrel 4 to move leftwards, so as to drive the second cylinder barrel 4 adjacent to the outer side of the innermost second cylinder barrel 4 to move leftwards, therefore, the first piston 6 on the second cylinder 4 positioned at the inner side moves leftwards to be abutted with the second front cover 5 on the second cylinder 4 adjacent to the outer side of the first piston, so that the first piston 6 drives the second front cover 5 abutted with the second cylinder to move leftwards until the second piston 8 on the second cylinder 4 at the outermost side is driven to move leftwards to be abutted with the first front cover 2, and the extension of the multi-stage telescopic cylinder is completed.
The retraction process of the multistage telescopic cylinder comprises the following steps: the compressed gas is continuously conveyed to the second air passage 21 through an external high-pressure gas source, the compressed gas enters the first cylinder barrel 1 from the second air passage 21 and is communicated to the left end of the first piston 6 on the outermost second cylinder barrel 4, the compressed gas pushes the first piston 6 on the outermost second cylinder barrel 4 to move rightmost, the outermost second cylinder barrel 4 retracts rightmost, the air hole 41 on the outermost second cylinder barrel 4 is communicated with the inner cavity of the first cylinder barrel 1, the compressed gas in the inner cavity of the first cylinder barrel 1 enters the inner cavity of the outermost second cylinder barrel 4 and is communicated to the left end of the first piston 6 on the second cylinder barrel 4 adjacent to the inner side of the outermost second cylinder barrel 4, the compressed gas pushes the first piston 6 rightmost to retract rightmost, so that the second cylinder barrel 4 adjacent to the inner side of the outermost second cylinder barrel 4 retracts rightmost, and the first piston 6 on the inner second cylinder barrel 4 is moved rightmost to the right position, the air hole 41 on the second cylinder 4 positioned at the inner side is communicated with the inner cavity of the second cylinder 4 adjacent to the outer side of the second cylinder, so that the first piston 6 on the second cylinder 4 adjacent to the inner side of the second cylinder 4 positioned at the inner side is pushed to move rightmost to the right by compressed air until the second cylinder 4 at the innermost side is retracted to the right, at the moment, the compressed air enters the inner cavity of the second cylinder 4 at the innermost side through the air hole 41 on the second cylinder 4 at the innermost side and is communicated to the left end of the second piston 8, so that the second piston 8 is pushed rightmost to the right by the compressed air, the piston rod 7 is retracted to the right, and the retraction of the multistage telescopic cylinder is completed.
Compared with the prior art, the utility model has the beneficial effects that:
1. the first front cover 2 and the rear cover 3 are respectively provided with a second air passage 21 and a first air passage 31, when the first air passage 31 is ventilated, air is communicated to the right end of the second piston 8 to sequentially push out the piston rod 7 and the second cylinder barrel 4, when the second air passage 21 is ventilated, air is communicated to the left ends of the first piston 6 and the second piston 8 to sequentially retract the piston rod 7 and the second cylinder barrel 4 into the first cylinder barrel 1, and the extension of the multistage telescopic cylinder is realized;
2. the first air passage 31 and the second air passage 21 are fixed and do not follow up with the extension of the multi-stage telescopic cylinder, so that an air pipe for conveying compressed air does not influence the operation of a load, and the air passages are more reliable and durable;
3. the arrangement of the plurality of second cylinder barrels 4 is adopted, so that the multi-stage telescopic cylinder is small in occupied space and long in stroke, and is suitable for occasions with limited space and long stroke.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention will still fall within the scope of the technical solution of the present invention without departing from the content of the technical solution of the present invention.
Claims (7)
1. A multi-stage telescopic cylinder is characterized by comprising a first cylinder barrel, wherein a first front cover and a rear cover are respectively arranged at the left end and the right end of the first cylinder barrel, a first air passage is arranged in the rear cover, one end of the first air passage is communicated with an inner cavity of the first cylinder barrel, the other end of the first air passage is communicated with the outside of the rear cover, a second air passage is arranged in the first front cover, one end of the second air passage is communicated with the inner cavity of the first cylinder barrel, and the other end of the second air passage is communicated with the outside of the first front cover;
a plurality of second cylinder barrels which are nested in sequence are arranged in the first cylinder barrel, a second front cover and a first piston are arranged at the left end and the right end of each second cylinder barrel respectively, the left end of the second cylinder barrel positioned on the inner side penetrates out of the second front cover on the second cylinder barrel adjacent to the outer side of the second cylinder barrel, the first piston on the second cylinder barrel positioned on the inner side is movably arranged in the second cylinder barrel adjacent to the outer side of the first piston, the left end of the second cylinder barrel on the outermost side penetrates out of the first front cover, and the first piston on the second cylinder barrel on the outermost side is arranged in the first cylinder barrel in a sliding mode;
a piston rod is arranged in the innermost second cylinder, the left end of the piston rod penetrates out of a second front cover on the innermost second cylinder, a second piston is arranged at the right end of the piston rod, and the second piston is arranged in the innermost second cylinder in a sliding manner;
the first piston is provided with a third air passage penetrating through the left end and the right end of the first piston, the second cylinder is provided with an air hole, when the first piston on the second cylinder on the outermost side is positioned at the rightmost end position, the air hole on the second cylinder on the outermost side is communicated with the inner cavity of the first cylinder, and when the first piston on the second cylinder on the inner side is positioned at the rightmost end position, the air hole on the second cylinder on the inner side is communicated with the inner cavity of the second cylinder adjacent to the outer side.
2. The multi-stage telescopic cylinder according to claim 1, wherein a first cushion pad is provided at a right end of the first piston, a through hole communicated with the third air passage of the first piston connected to the first cushion pad is provided on the first cushion pad, and a second cushion pad is provided at a right end of the second piston.
3. The multi-stage telescopic cylinder according to claim 1, wherein a first guide belt is provided on an inner side wall of the first front cover, and a second guide belt is provided on an inner side wall of the second front cover.
4. The multi-stage telescopic cylinder according to claim 1, wherein a first dust ring and a first shaft Y ring are provided on an inner sidewall of the first front cover, a rod portion seal ring is provided on an inner sidewall of the second front cover on the innermost second cylinder, and second dust rings and a second shaft Y ring are provided on inner sidewalls of the second front covers on the remaining second cylinders.
5. The multi-stage telescopic cylinder according to claim 1, wherein a third guide belt is arranged on the outer side wall of the first piston, and a fourth guide belt is arranged on the outer side wall of the second piston.
6. The multi-stage telescopic cylinder according to claim 1, wherein first sealing rings are respectively arranged between the first cylinder barrel and the first front cover and the rear cover, and second sealing rings are respectively arranged between the second cylinder barrel and the second front cover and the first piston connected with the second cylinder barrel.
7. The multi-stage telescopic cylinder according to claim 1, wherein piston sealing rings are provided on outer side walls of the first and second pistons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220204046.5U CN216742273U (en) | 2022-01-25 | 2022-01-25 | Multistage telescopic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220204046.5U CN216742273U (en) | 2022-01-25 | 2022-01-25 | Multistage telescopic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216742273U true CN216742273U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220204046.5U Active CN216742273U (en) | 2022-01-25 | 2022-01-25 | Multistage telescopic cylinder |
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| Country | Link |
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| CN (1) | CN216742273U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115415771A (en) * | 2022-10-21 | 2022-12-02 | 成都秦川物联网科技股份有限公司 | Fairing installation device suitable for manufacturing of industrial Internet of things |
-
2022
- 2022-01-25 CN CN202220204046.5U patent/CN216742273U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115415771A (en) * | 2022-10-21 | 2022-12-02 | 成都秦川物联网科技股份有限公司 | Fairing installation device suitable for manufacturing of industrial Internet of things |
| CN115415771B (en) * | 2022-10-21 | 2023-10-31 | 成都秦川物联网科技股份有限公司 | Radome fairing installation device suitable for industry thing networking makes |
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