CN204312451U - Telescopic cylinder - Google Patents
Telescopic cylinder Download PDFInfo
- Publication number
- CN204312451U CN204312451U CN201420658970.6U CN201420658970U CN204312451U CN 204312451 U CN204312451 U CN 204312451U CN 201420658970 U CN201420658970 U CN 201420658970U CN 204312451 U CN204312451 U CN 204312451U
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- CN
- China
- Prior art keywords
- slide blocks
- air chamber
- positioning convex
- inner circle
- telescopic cylinder
- Prior art date
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Abstract
The utility model discloses a kind of telescopic cylinder, comprise cylinder shell (1), piston and the through hole (4) for ventilating, there is air chamber (2) cylinder shell inside, and its inner circle wall top is extended with ring-type spacing preiection (5) in air chamber; Piston comprises the angled slide block (22) at air chamber center and multiple slide blocks (21) with penetration hole, multiple slide blocks is sheathed on angled slide block periphery successively, and the diameter from slide blocks periphery wall to the slide blocks penetration hole in air chamber inner circle wall direction increases gradually; The bottom of the periphery wall of angled slide block and the bottom of slide blocks periphery wall are equipped with outward extending ring-type first positioning convex (61), and slide blocks inner circle wall top is provided with ring-type second positioning convex (62) extended internally; During through hole inflation, adjacent first positioning convex and the second positioning convex close contact, and the slide blocks adjacent with air chamber inner circle wall closes spacing preiection.This telescopic cylinder has independent air inlet/outlet, can carry out multi-stage expansion use.
Description
Technical field
The utility model relates to the cylinder used in machine-building, particularly, relates to a kind of telescopic cylinder.
Background technique
Existing machining many employings cylinder clamping and fixed product, then process, the height being limited to cylinder due to cylinder stroke causes cylinder stroke to be all less than cylinder height.Often need at the bulky product of clamping the cylinder that cylinder stroke is larger in actual production, but the stroke of existing cylinder is difficult to meet need of production, and other fixation method is also difficult to carry out stable clamping to bulky product and fix.
Model utility content
The purpose of this utility model is to provide a kind of telescopic cylinder, and this telescopic cylinder has independent air inlet/outlet, can carry out multi-stage expansion use.
To achieve these goals, the utility model provides a kind of telescopic cylinder, described telescopic cylinder comprises cylinder shell, piston and the through hole for ventilating, the inside of described cylinder shell is formed with air chamber, and the top of the inner circle wall of described cylinder shell extends to form the spacing preiection of ring-type in described air chamber; Described piston comprises the angled slide block of the central position being positioned at described air chamber and multiple slide blocks with penetration hole, described multiple slide blocks is sheathed on described angled slide block periphery successively, and increases gradually to the diameter of the penetration hole of the described slide blocks in the direction of described air chamber inner circle wall from the periphery wall of described angled slide block; The bottom of the bottom of the periphery wall of described angled slide block and the periphery wall of described slide blocks is equipped with the first positioning convex of outward extending ring-type, and the top of the inner circle wall of described slide blocks is provided with the second positioning convex of the ring-type extended internally; When through hole is inflated, adjacent described first positioning convex and the second positioning convex can close contacts mutually, and the described slide blocks adjacent with described air chamber inner circle wall can close described spacing preiection.
Preferably, described air chamber is cylindrical chamber, and described slide blocks and angled slide block are cylindrical structure.
Preferably, the diameter of the bottom of described air chamber is 25 ~ 100mm, and the quantity of described slide blocks is 2 ~ 8 pieces and described slide blocks is greater than 120mm along the length of the axis of described air chamber.
Preferably, the below of the first positioning convex is provided with ring-like seal ring, and/or the below of described second positioning convex is provided with ring-like seal ring.
Preferably, when through hole is inflated, described spacing preiection can be closed in the described slide blocks top adjacent with described air chamber inner circle wall.
Preferably, top and the bottom of the periphery wall of adjacent with described air chamber inner circle wall described slide blocks are equipped with seal ring.
Preferably, when through hole is inflated, described first positioning convex of the described slide blocks adjacent with described air chamber inner circle wall can close described spacing preiection.
Preferably, described angled slide block comprises cylindric body and the block for the top that is closed in body, and described first positioning convex of described angled slide block is positioned at the bottom of the periphery wall of described body.
According to technique scheme, when inflating from through hole, gas enters air chamber and upwardly ejects angled slide block, owing to being all interconnected by the first positioning convex and the second positioning convex between angled slide block and multiple slide blocks be set-located, therefore successively upwards eject under the effect of gas, form longer cylinder stroke; When gas is discharged by through hole, due to the power that the extruding losing gas ejects, be subject to gravity effect, angled slide block and multiple slide blocks be set-located just can fall step by step simultaneously, recover the closed state before originally not inflating; In above process, because adjacent slide blocks passes through the first positioning convex and the second positioning convex is all linked with one another, just can reach by the quantity or length increasing slide blocks the effect increasing cylinder stroke.
Other feature and advantage of the present utility model are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 is the structural representation of telescopic cylinder in unaerated situation of preferred implementation of the present utility model;
Fig. 2 is the structural representation of telescopic cylinder under inflation situation of preferred implementation of the present utility model; And
Fig. 3 is the enlarged view of part A in Fig. 2.
Description of reference numerals
1-housing 2-air chamber
21-slide blocks 22-angled slide block
3-seal ring 4-through hole
5-spacing preiection 61-first positioning convex
62-second positioning convex
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
In the utility model, when not doing contrary explanation, the nouns of locality be included in term such as " top, bottom, periphery, inner circumferential, belows " only represents the orientation of this term under normal service condition, or being commonly called as those skilled in the art's understanding, and should not be considered as the restriction to this term.
See Fig. 1, the utility model provides a kind of telescopic cylinder, telescopic cylinder comprises cylinder shell 1, piston and the through hole 4 for ventilating, the inside of cylinder shell 1 is formed with air chamber 2 (as shown in Figure 2), and the top of the inner circle wall of cylinder shell 1 extends to form the spacing preiection 5 of ring-type in air chamber 2; Piston comprises the angled slide block 22 of the central position being positioned at air chamber 2 and multiple slide blocks 21 with penetration hole, multiple slide blocks 21 is sheathed on angled slide block 22 periphery successively, and increases gradually to the diameter of the penetration hole of the slide blocks 21 in the direction of air chamber 2 inner circle wall from the periphery wall of angled slide block 22; As shown in Figure 3, the bottom of the bottom of the periphery wall of angled slide block 22 and the periphery wall of slide blocks 21 is equipped with the first positioning convex 61 of outward extending ring-type, and the top of the inner circle wall of slide blocks 21 is provided with the second positioning convex 62 of the ring-type extended internally; When through hole 4 is inflated, the first adjacent positioning convex 61 and the second positioning convex 62 can close contacts mutually, and the slide blocks 21 adjacent with air chamber 2 inner circle wall can close spacing preiection 5.
When inflating from through hole 4, gas enters air chamber 2 and upwardly ejects angled slide block 22, owing to being all interconnected by the first positioning convex 61 and the second positioning convex 62 between angled slide block 22 and multiple slide blocks 21 be set-located, therefore successively upwards eject under the effect of gas, form longer cylinder stroke; When gas is discharged by through hole 4, due to the power that the extruding losing gas ejects, be subject to gravity effect, angled slide block 22 and multiple slide blocks 21 be set-located just can fall step by step simultaneously, recover the closed state before originally not inflating; In above process, because adjacent slide blocks 21 passes through the first positioning convex 61 and the second positioning convex 62 is all linked with one another, so just can reach by the quantity or length increasing slide blocks 21 effect increasing cylinder stroke.
In present embodiment, the shape of cross section of piston can be square, also can be rectangle, can also be other shapes such as triangle, but can the power that one, piston is larger be given when inflating in telescopic cylinder from through hole 4 to make gas, the lifting surface area of piston can be increased, therefore preferably as far as possible, air chamber 2 is cylindrical chamber, and slide blocks 21 and angled slide block 22 are cylindrical structure.
In present embodiment, the stroke of existing cylinder is 20 ~ 50mm, in order to while growth cylinder stroke, the stability of whole telescopic cylinder can be kept, avoid that cylinder stretches long and bottom weight is too small and overturning even damages, preferably, the diameter of the bottom of air chamber 2 is 25 ~ 100mm, and the quantity of slide blocks 21 is 2 ~ 8 pieces and slide blocks 21 is greater than 120mm along the length of the axis of air chamber 2.Like this, even if cylinder stretches the very long phenomenon also can not rocked or rupture.
In present embodiment, the sealing of whole telescopic cylinder should be ensured when gas is inflated in telescopic cylinder from through hole 4, if the not good gas that will cause of sealing effect cannot eject piston, telescopic cylinder is made to lose extensional process, therefore in order to strengthen its sealing, preferably, the below of the first positioning convex 61 is provided with ring-like seal ring 3, and/or the below of the second positioning convex 62 is provided with ring-like seal ring 3.In order to improve the sealing of telescopic cylinder further, prevent inner Leakage Gas, further preferably, top and the bottom of the periphery wall of the slide blocks 21 adjacent with air chamber 2 inner circle wall are equipped with seal ring 3.
Obviously, whether the sealing of telescopic cylinder determines the excellence of the performance of cylinder, be not singly need to close between adjacent two slide blockss 21, and the sealing effect between spacing preiection 5 on slide blocks 21 and cylinder shell 1 affect the normal operation of whole telescopic cylinder too.Therefore in a kind of mode of execution, when through hole 4 is inflated, spacing preiection 5 can be closed in slide blocks 21 top adjacent with air chamber 2 inner circle wall, adopt structural stability between slide blocks 21 and air chamber 2 inner circle wall in this way, good airproof performance, but can shorten slide blocks 21 stroke distances in the deflated condition.In another kind of mode of execution, when through hole 4 is inflated, the first positioning convex 61 of the slide blocks 21 adjacent with air chamber 2 inner circle wall can close spacing preiection 5.Compared with upper a kind of mode of execution, adopt and can increase slide blocks 21 stroke distances in the deflated condition to the full extent in this way, but stability between slide blocks 21 and air chamber 2 inner circle wall and sealing not good.
When gas to be entered in air chamber 2 by through hole 4 and ejects multiple slide blocks 21, due to multiple slide blocks 21 all having penetration hole, therefore angled slide block 22 is adopted to close, angled slide block 22 comprises cylindric body and the block for the top that is closed in body, and the first positioning convex 61 of angled slide block 22 is positioned at the bottom of the periphery wall of body.Like this, after the multiple slide blockss 21 between cylinder shell 1 inner circle wall to angled slide block 22 periphery wall are ejected by gas successively, adjacent two slide blockss 21 seal spacing by the first positioning convex 61 and the second positioning convex 62, and the second positioning convex 62 angled slide block 22 being positioned at the ring-type extended internally that the first positioning convex 61 bottom body peripheral wall is arranged with adjacent slide blocks 21 inner circle wall top matches to seal spacing.
Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (8)
1. a telescopic cylinder, described telescopic cylinder comprises cylinder shell (1), piston and the through hole (4) for ventilating, it is characterized in that, the inside of described cylinder shell (1) is formed with air chamber (2), and the top of the inner circle wall of described cylinder shell (1) extends to form the spacing preiection (5) of ring-type in described air chamber (2); Described piston comprises the angled slide block (22) of the central position being positioned at described air chamber (2) and multiple slide blocks (21) with penetration hole, described multiple slide blocks (21) is sheathed on described angled slide block (22) periphery successively, and increases gradually to the diameter of the penetration hole of the described slide blocks (21) in the direction of described air chamber (2) inner circle wall from the periphery wall of described angled slide block (22); The bottom of the bottom of the periphery wall of described angled slide block (22) and the periphery wall of described slide blocks (21) is equipped with first positioning convex (61) of outward extending ring-type, and the top of the inner circle wall of described slide blocks (21) is provided with second positioning convex (62) of the ring-type extended internally;
When through hole (4) is inflated, adjacent described first positioning convex (61) and the second positioning convex (62) can close contacts mutually, and the described slide blocks (21) adjacent with described air chamber (2) inner circle wall can close described spacing preiection (5).
2. telescopic cylinder according to claim 1, is characterized in that, described air chamber (2) is cylindrical chamber, and described slide blocks (21) and angled slide block (22) are cylindrical structure.
3. telescopic cylinder according to claim 2, it is characterized in that, the diameter of the bottom of described air chamber (2) is 25 ~ 100mm, and the quantity of described slide blocks (21) is 2 ~ 8 pieces and described slide blocks (21) is greater than 120mm along the length of the axis of described air chamber (2).
4. telescopic cylinder according to claim 1, it is characterized in that, the below of the first positioning convex (61) is provided with ring-like seal ring (3), and/or the below of described second positioning convex (62) is provided with ring-like seal ring (3).
5. according to the telescopic cylinder in claim 1-4 described in any one, it is characterized in that, when through hole (4) is inflated, described spacing preiection (5) can be closed in described slide blocks (21) top adjacent with described air chamber (2) inner circle wall.
6. telescopic cylinder according to claim 5, is characterized in that, top and the bottom of the periphery wall of the described slide blocks (21) adjacent with described air chamber (2) inner circle wall are equipped with seal ring (3).
7. according to the telescopic cylinder in claim 1-4 described in any one, it is characterized in that, when through hole (4) is inflated, described first positioning convex (61) of the described slide blocks (21) adjacent with described air chamber (2) inner circle wall can close described spacing preiection (5).
8. according to the telescopic cylinder in claim 1-4 described in any one, it is characterized in that, described angled slide block (22) comprises cylindric body and the block for the top that is closed in body, and described first positioning convex (61) of described angled slide block (22) is positioned at the bottom of the periphery wall of described body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420658970.6U CN204312451U (en) | 2014-11-05 | 2014-11-05 | Telescopic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420658970.6U CN204312451U (en) | 2014-11-05 | 2014-11-05 | Telescopic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204312451U true CN204312451U (en) | 2015-05-06 |
Family
ID=53134769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420658970.6U Expired - Fee Related CN204312451U (en) | 2014-11-05 | 2014-11-05 | Telescopic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204312451U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405722A (en) * | 2014-11-05 | 2015-03-11 | 镁联科技（芜湖）有限公司 | Telescopic cylinder |
-
2014
- 2014-11-05 CN CN201420658970.6U patent/CN204312451U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405722A (en) * | 2014-11-05 | 2015-03-11 | 镁联科技（芜湖）有限公司 | Telescopic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20151105 |
|
| EXPY | Termination of patent right or utility model |