CN202215530U - Single acting multistage oil cylinder - Google Patents
Single acting multistage oil cylinder Download PDFInfo
- Publication number
- CN202215530U CN202215530U CN2011201679045U CN201120167904U CN202215530U CN 202215530 U CN202215530 U CN 202215530U CN 2011201679045 U CN2011201679045 U CN 2011201679045U CN 201120167904 U CN201120167904 U CN 201120167904U CN 202215530 U CN202215530 U CN 202215530U
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- CN
- China
- Prior art keywords
- plunger piston
- outer cylinder
- cylinder body
- adjacent
- oil cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
- Actuator (AREA)
Abstract
The utility model discloses a single acting multistage oil cylinder, which comprises an outer cylinder barrel, an outer end cap, an outer cylinder body, a central plunger piston of which one end is connected with the outer end cap, and more than one stage of middle plunger piston arranged between the outer cylinder body and the central plunger piston, wherein the central plunger piston is in sliding fit with each adjacent middle plunger piston, the adjacent middle plunger pistons are in sliding fit with each other, and each middle plunger piston is in sliding fit with the adjacent outer cylinder body; sealing rings are arranged between the central plunger piston and each adjacent middle plunger piston, between the adjacent middle plunger pistons, and between each middle plunger piston and the adjacent outer cylinder body; a cylinder bottom is fixedly arranged in a port of the outer cylinder body; an oil inlet is arranged on the outer cylinder body; and middle oil openings and oil passing grooves are arranged on the middle plunger piston and the central plunger piston on the inner side of the single acting multistage oil cylinder. The single acting multistage oil cylinder is characterized in that a limiting threaded check ring is arranged in a port of each middle plunger piston. Acting as further improvement of the single acting multistage oil cylinder, an O-shaped rubber ring is additionally arranged on the inner wall of the middle plunger piston on the axial inner side of each limiting threaded check ring. The single acting multistage oil cylinder has the advantages that the middle plunger piston cannot slip away, the reliability is good, and the noise produced during recovery is low.
Description
Technical field
The utility model relates to a kind of single-acting multistage hydraulic cylinder.
Background technique
The single-acting multi-stage oil cylinder can be realized the stroke longer than single-stage oil cylinder because of its compact structure in given installing space, thereby under the situation of installing space anxiety, is used widely, like dump truck; The single-acting multi-stage oil cylinder that generally adopts at present; As shown in Figure 1; Comprise center plunger 4 that outer cylinder 1, outer end cap 2, outer cylinder body 5, an end be connected with outer end cap 2, be located at the two-stage intermediate plungers 6,7 between outer cylinder body 5 and the center plunger 4, between center plunger 4 and the adjacent intermediate plungers 7, adjacent intermediate plungers 6, be between 7 and between intermediate plungers 6 and the adjacent outer cylinder body 5 and be slidingly matched and be provided with seal ring, in the port of outer cylinder body 5, be installed with cylinder bottom 8; On outer cylinder body 5, be provided with filler opening 9; Its inboard intermediate plungers 6,7 and center plunger 4 are equipped with middle hydraulic fluid port 10 and cross oil groove 11, in the port of intermediate plungers 6,7, are equipped with spacing Steel Cable Baffle Ring 15, when intermediate plungers 6,7 reclaims; Spacing circlip 15 can play the effect of axially locating, prevents slippage; But this spacing Steel Cable Baffle Ring 15 is loaded in the annular groove of intermediate plungers 6 or 7 inwalls, when intermediate plungers 6,7 reclaims because of center plunger 4 or intermediate plungers 7 bumps with the inboard are prone to come off, thereby produce slippage and random level phenomenon phenomenon, reliability is relatively poor, and noise is bigger.
The model utility content
The purpose of the utility model is the above-mentioned deficiency that exists to existing technology, a kind of single-acting multi-stage oil cylinder is provided, the little advantage of noise when it has not slippage of intermediate plungers, good reliability, recovery.
For achieving the above object; The single-acting multi-stage oil cylinder of the utility model; Comprise center plunger that outer cylinder, outer end cap, outer cylinder body, an end be connected with outer end cap, be located at the above intermediate plungers of one-level between outer cylinder body and the center plunger; Be between center plunger and the adjacent intermediate plungers, between the adjacent intermediate plungers and between intermediate plungers and the adjacent outer cylinder body and be slidingly matched and be provided with seal ring, in the port of outer cylinder body, be installed with cylinder bottom, on outer cylinder body, be provided with filler opening; Intermediate plungers that it is inboard and center plunger are equipped with middle hydraulic fluid port and cross oil groove, it is characterized in that in the port of each intermediate plungers, being equipped with spacing threaded collar.
Because spacing threaded collar is connected with intermediate plungers through screw thread, difficult drop-off when intermediate plungers reclaims can prevent the intermediate plungers slippage, has the advantage of good reliability.
As the further improvement of the utility model, axially also be provided with O shape rubber ring on the inwall of inboard intermediate plungers at each spacing threaded collar; O shape rubber ring can play the effect of buffering, and avoids spacing threaded collar and inboard part bump, can reduce noise;
The little advantage of noise when in sum, the utlity model has not slippage of intermediate plungers, good reliability, recovery.
Description of drawings
Fig. 1 is the plan view of existing single-acting multi-stage oil cylinder.
Fig. 2 is the utility model embodiment's a plan view.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
As shown in Figure 2; This single-acting multi-stage oil cylinder; Comprise center plunger 4 that outer cylinder 1, outer end cap 2, outer cylinder body 5, an end be connected with outer end cap 2 through nut 3, be located at the two-stage intermediate plungers 6,7 between outer cylinder body 5 and the center plunger 4; Between center plunger 4 and the adjacent intermediate plungers 7, adjacent intermediate plungers 6, be between 7 and between intermediate plungers 6 and the adjacent outer cylinder body 5 and be slidingly matched and be provided with seal ring, in the port of outer cylinder body 5, be installed with cylinder bottom 8, on outer cylinder body 5, be provided with filler opening 9; Its inboard intermediate plungers 6,7 and center plunger 4 are equipped with middle hydraulic fluid port 10 and cross oil groove 11; In the port of each intermediate plungers 6,7, be equipped with spacing threaded collar 12,, also be provided with O shape rubber ring 13 on the intermediate plungers 6 of 12 axial inboards or 7 the inwall at each spacing screw thread retaining;
The utility model is because spacing threaded collar 12 connects with corresponding intermediate plungers 6 or 7 through screw thread, and difficult drop-off when intermediate plungers 6 or 7 reclaims can prevent intermediate plungers 6 or 7 slippages, has the advantage of good reliability; O shape rubber ring 13 can play the effect of buffering, and avoids spacing threaded collar 12 and inboard part bump, can reduce noise.
Claims (2)
1. single-acting multi-stage oil cylinder; Comprise center plunger that outer cylinder, outer end cap, outer cylinder body, an end be connected with outer end cap, be located at the above intermediate plungers of one-level between outer cylinder body and the center plunger; Be between center plunger and the adjacent intermediate plungers, between the adjacent intermediate plungers and between intermediate plungers and the adjacent outer cylinder body and be slidingly matched and be provided with seal ring; In the port of outer cylinder body, be installed with cylinder bottom; On outer cylinder body, be provided with filler opening, intermediate plungers that it is inboard and center plunger are equipped with middle hydraulic fluid port and cross oil groove, it is characterized in that in the port of each intermediate plungers, being equipped with spacing threaded collar.
2. single-acting multi-stage oil cylinder as claimed in claim 1 is characterized in that axially also being provided with O shape rubber ring on the inwall of inboard intermediate plungers at each spacing threaded collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201679045U CN202215530U (en) | 2011-05-24 | 2011-05-24 | Single acting multistage oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201679045U CN202215530U (en) | 2011-05-24 | 2011-05-24 | Single acting multistage oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202215530U true CN202215530U (en) | 2012-05-09 |
Family
ID=46014788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201679045U Expired - Fee Related CN202215530U (en) | 2011-05-24 | 2011-05-24 | Single acting multistage oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202215530U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062153A (en) * | 2013-01-24 | 2013-04-24 | 徐州科源液压股份有限公司 | Self-lubricating device of plunger-type multi-stage cylinder tube guiding slider for autodumper |
| CN104405722A (en) * | 2014-11-05 | 2015-03-11 | 镁联科技（芜湖）有限公司 | Telescopic cylinder |
| CN105179370A (en) * | 2015-08-21 | 2015-12-23 | 蚌埠液力机械有限公司 | Single-acting welded type four-stage oil cylinder |
-
2011
- 2011-05-24 CN CN2011201679045U patent/CN202215530U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062153A (en) * | 2013-01-24 | 2013-04-24 | 徐州科源液压股份有限公司 | Self-lubricating device of plunger-type multi-stage cylinder tube guiding slider for autodumper |
| CN103062153B (en) * | 2013-01-24 | 2015-03-25 | 徐州科源液压股份有限公司 | Self-lubricating device of plunger-type multi-stage cylinder tube guiding slider for autodumper |
| CN104405722A (en) * | 2014-11-05 | 2015-03-11 | 镁联科技（芜湖）有限公司 | Telescopic cylinder |
| CN105179370A (en) * | 2015-08-21 | 2015-12-23 | 蚌埠液力机械有限公司 | Single-acting welded type four-stage oil cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 Termination date: 20140524 |