CN103016446A - Double-acting multistage oil cylinder - Google Patents
Double-acting multistage oil cylinder Download PDFInfo
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- CN103016446A CN103016446A CN201210583642XA CN201210583642A CN103016446A CN 103016446 A CN103016446 A CN 103016446A CN 201210583642X A CN201210583642X A CN 201210583642XA CN 201210583642 A CN201210583642 A CN 201210583642A CN 103016446 A CN103016446 A CN 103016446A
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Abstract
The invention discloses a double-acting multistage oil cylinder, which comprises an oil cylinder assembly, an outer cylinder barrel, a cylinder bottom, a piston rod and middle cylinder barrels, wherein the middle cylinder barrels are positioned between the outer cylinder barrel and the piston rod; an extending oil port and a retracted oil port are arranged on a flange block of the oil cylinder assembly, and a first chamber is arranged in the oil cylinder assembly; chambers are arranged between the outer cylinder barrel and the adjacent middle cylinder barrel, between the inner parts of the middle cylinder barrels; between the adjacent middle cylinder barrels and between the piston rod and the adjacent middle cylinder barrel; oil passing holes are arranged at two ends of each middle cylinder barrel, and a piston structure is arranged at the bottom of each middle cylinder barrel; sealing pieces are arranged between the outer cylinder barrel and the adjacent piston structure and between the inner wall of each middle cylinder barrel and the adjacent piston structure; a fifth chamber is arranged between the middle cylinder barrels and the cylinder bottom and communicated with the first chamber, and a piston is mounted at one end of the piston rod close to the cylinder bottom; a sixth chamber is arranged between the piston and the cylinder bottom and communicated with the fifth chamber; and a sealing piece is arranged between the piston and the inner wall of the adjacent middle cylinder barrel. The oil cylinder provided by the invention can effectively realize the extending or retracting of each stage of oil cylinder and improves the working efficiency.
Description
Technical field
The present invention relates to a kind of oil cylinder, particularly a kind of multi-stage oil cylinder.
Background technique
The multi-stage oil cylinder that engineering vehicle is used mostly is one-way cylinder, and piston structure is adopted in oil cylinder inside more, and this class oil cylinder linear response is slow, the pressurize weak effect, and oil circuit is single, is difficult to finish realization complex working condition operational requirements and poor controllability.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of double-acting multilevel oil cylinder, realizes that by oil circuit design piston rod and oil cylinder at different levels stretch out or retract, and increase work efficiency; The Sealing sealing is arranged between piston and piston structure and adjacent cylinder barrel, increase tightness, reduce the leakage of oil probability, reduce simultaneously cylinder barrel to the wearing and tearing of piston and piston structure, increase the service life.
For solving the problems of the technologies described above, the technological scheme that the present invention takes provides a kind of double-acting multilevel oil cylinder, cylinder component, outer cylinder, cylinder bottom, piston rod, at least one-level middle cylinder cylinder between outer cylinder and piston rod, cylinder component is positioned at the outer cylinder outside, be fixed on the outer wall of outer cylinder by the flange piece, piston rod is positioned at the middle cylinder barrel inside of innermost layer; The flange piece is provided with and stretches out hydraulic fluid port and retraction hydraulic fluid port, the retraction hydraulic fluid port runs through the sidewall of outer cylinder, cylinder component inside is provided with the first chamber, the first chamber with stretch out hydraulic fluid port and communicate, between outer cylinder and the adjacent middle cylinder barrel, middle cylinder barrel is inner, between the adjacent middle cylinder barrel, be equipped with chamber between piston rod and the adjacent middle cylinder barrel, the two ends of middle cylinder barrel all are provided with oil-through hole, near the oil-through hole of cylinder bottom the chamber of middle cylinder barrel inside is communicated with the chamber of middle cylinder drum outer wall at the same level, is communicated with the chamber of the middle inner wall of cylinder of peer away from the oil-through hole of the cylinder bottom chamber with middle cylinder barrel inside; Middle cylinder barrel arranges piston structure near an end of cylinder bottom, between the piston structure of outer cylinder and adjacent middle cylinder barrel, all have Sealing to seal between the piston structure of the inwall of middle cylinder barrel and adjacent middle cylinder barrel; Leave the 5th chamber between middle cylinder barrel and the cylinder bottom, the 5th chamber communicates with the first chamber, and piston rod is equipped with piston near cylinder bottom one end, and the 6th chamber is arranged between piston and cylinder bottom, the 6th chamber communicates with the 5th chamber, and the Sealing sealing is arranged between inner wall of cylinder in the middle of piston and the innermost layer; The whole series of investigation mission outside the city or town are arranged, the middle cylinder barrel of innermost layer and the sectional area of a whole set of sectional area sum less than piston of transfering to other localities between piston and the cylinder bottom.
As improvement of the present invention, be threaded connection between the middle cylinder barrel of transfer to other localities a whole set of and innermost layer and be connected with screw, both can effectively locate piston, can also carry out the fine setting of piston position.
In sum, double-acting multilevel oil cylinder of the present invention realizes that by oil circuit design piston rod and oil cylinder at different levels stretch out or retract, and increase work efficiency; The Sealing sealing is arranged between piston and piston structure and adjacent cylinder barrel, increase tightness, reduce the leakage of oil probability, reduce simultaneously cylinder barrel to the wearing and tearing of piston and piston structure, increase the service life.
Description of drawings
Fig. 1 is the plan view of double-acting multilevel oil cylinder in the embodiment of the invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the innermost layer piston body schematic representation of double-acting multilevel oil cylinder in the embodiment of the invention.
Fig. 4 is the middle cylinder cylindrical shell schematic representation of double-acting multilevel oil cylinder in the embodiment of the invention.
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
As shown in Figure 1, this double-acting multilevel oil cylinder, comprise cylinder component 1, outer cylinder 2, cylinder bottom 4, piston rod 5, middle cylinder barrel 6 between outer cylinder 2 and piston rod 5, cylinder component 1 is positioned at the outside of outer cylinder 2, be fixed on the outer wall of outer cylinder 2 by flange piece 3, cylinder barrel 6 inside in the middle of piston rod 5 is positioned at, flange piece 3 is provided with and stretches out hydraulic fluid port 7 and retraction hydraulic fluid port 8, retraction hydraulic fluid port 8 runs through the sidewall of outer cylinder 2, cylinder component 1 inside is provided with the first chamber a, the first chamber a with stretch out hydraulic fluid port 7 and communicate, be provided with the second chamber b between outer cylinder 2 and the middle cylinder barrel 6, middle cylinder barrel 6 inside are provided with the 3rd chamber c, be provided with the 4th chamber d between piston rod 5 and the middle cylinder barrel 6, middle cylinder barrel 6 two ends are respectively equipped with oil-through hole 9 and oil-through hole 10, oil-through hole 9 near cylinder bottom 4 is communicated with the 3rd chamber c with the second chamber b, oil-through hole 10 away from cylinder bottom is communicated with the 3rd chamber c with the 4th chamber d, middle cylinder barrel 6 arranges piston structure near an end of cylinder bottom 4, between the piston structure of middle cylinder barrel 6 and outer cylinder 2 inwalls supporting ring 14 and Ge Lai seal ring 13 are housed, leave the 5th chamber e between middle cylinder barrel 6 and the cylinder bottom 4, the 5th chamber e communicates with the first chamber a, piston rod 5 is equipped with piston 11 near an end of cylinder bottom 4, the 6th chamber f is arranged between piston 11 and the cylinder bottom 4, the 6th chamber f communicates with the 5th chamber e, there are supporting ring 14 and Ge Lai seal ring 13 to seal between piston 11 and middle cylinder barrel 6 inwalls, have between piston 11 and the cylinder bottom 4 and transfer to other localities a whole set of 12, the whole series 12 of transfering to other localities are threaded connection with 6 of middle cylinder barrels and are connected with screw, and the sectional area sum of middle cylinder barrel 6 and the whole series 12 of transfering to other localities is less than the sectional area of piston 11; Between outer cylinder 2 and the middle cylinder barrel 6, between middle cylinder barrel 6 and the piston rod 5 guide sleeve 15 is housed.
When using for the first time, toward stretching out oiling in the hydraulic fluid port 7, fluid flows into the 5th chamber e through the first chamber a, then flow into the 6th chamber f, and fill up the 6th chamber f, when continuing oiling, the 6th chamber f produces certain oil pressure, and the sectional area sum of middle cylinder barrel 6 and the whole series 12 of transfering to other localities is less than the sectional area of piston 11, cause on the piston 11 stressed greatlyr, move to the direction away from cylinder bottom 4 thereby compressing piston 11 drives piston rods 5, the air among the 4th chamber d flows into the 3rd chamber c through oil-through hole 10, flow into the second chamber b through oil-through hole 9 again, discharge finally by retraction hydraulic fluid port 8.After piston 11 moved to limit position, the supporting ring 14 of piston 11 and Ge Lai seal ring 13 were still stayed the left side of oil-through hole 10, so fluid still stays among the 6th chamber f, and flowed out by oil-through hole 10.When oil pressure continues to rise among the 6th chamber f, will begin to oppress the end face of middle cylinder barrel 6, cylinder barrel 6 moves to the direction away from cylinder bottom 4 in the middle of making, and the air among the second chamber b is discharged through retraction hydraulic fluid port 8, thereby oil cylinder is stretched out step by step; When oiling in retraction hydraulic fluid port 8, fluid flows into the second chamber b, oil-through hole 9 and oil-through hole 10 by middle cylinder barrel 6 flows into the 4th chamber d again, and with the second chamber b, the 3rd chamber c and three chambers of the 4th chamber d fill up, after oil pressure further rises, because the piston structure right-hand member oil circuit sectional area of middle cylinder barrel 6 is greater than piston 11 right-hand member oil circuit sectional areas, so cylinder barrel 6 moved to nearly cylinder bottom direction in the middle of oil pressure forced, when middle cylinder barrel 6 reaches capacity the position with after cylinder bottom contacts, when continuing oiling, oil pressure begins to force piston 11 drive piston rods 5 also to move to nearly cylinder bottom direction, finally realizes the step by step retracting motion of total travel of oil cylinder.
When reusing, toward stretching out oiling in the hydraulic fluid port 7, fluid flows into the 5th chamber e through the first chamber a, then flows into the 6th chamber f, and fills up the 6th chamber f, when continuing oiling, the 6th chamber f produces certain oil pressure, and compressing piston 11 drives piston rod 5 and moves to the direction away from cylinder bottom 4, and the fluid among the 4th chamber d flows into the 3rd chamber c through oil-through hole 10, flow into the second chamber b through oil-through hole 9 again, discharge finally by retraction hydraulic fluid port 8.After piston 11 moves to limit position, cylinder barrel 6 in the middle of oil pressure begins to oppress, cylinder barrel 6 moves to the direction away from cylinder bottom 4 in the middle of making, and the fluid among the second chamber b is discharged through retraction hydraulic fluid port 8, thereby oil cylinder is stretched out step by step; When oiling in retraction hydraulic fluid port 8, fluid flows into the second chamber b, oil-through hole 9 and oil-through hole 10 by middle cylinder barrel 6 flows into the 4th chamber d again, and with the second chamber b, the 3rd chamber c and three chambers of the 4th chamber d fill up, after oil pressure further rises, because the piston structure right-hand member oil circuit sectional area of middle cylinder barrel 6 is greater than piston 11 right-hand member oil circuit sectional areas, so cylinder barrel 6 moved to nearly cylinder bottom direction in the middle of oil pressure forced, when middle cylinder barrel 6 reaches capacity the position with after cylinder bottom contacts, when continuing oiling, oil pressure begins to force piston 11 drive piston rods 5 also to move to nearly cylinder bottom direction, finally realizes the step by step retracting motion of total travel of oil cylinder.
Claims (2)
1. double-acting multilevel oil cylinder comprises:
Cylinder component, outer cylinder, cylinder bottom, piston rod, at least one-level middle cylinder cylinder between outer cylinder and piston rod, cylinder component are positioned at the outer cylinder outside, are fixed on the outer wall of outer cylinder by the flange piece, and piston rod is positioned at the middle cylinder barrel inside of innermost layer;
The flange piece is provided with and stretches out hydraulic fluid port and retraction hydraulic fluid port, the retraction hydraulic fluid port runs through the sidewall of outer cylinder, cylinder component inside is provided with the first chamber, the first chamber with stretch out hydraulic fluid port and communicate, between outer cylinder and the adjacent middle cylinder barrel, middle cylinder barrel is inner, between the adjacent middle cylinder barrel, be equipped with chamber between piston rod and the adjacent middle cylinder barrel, the two ends of cylinder barrel all are provided with oil-through hole in the middle of every grade, near the oil-through hole of cylinder bottom the chamber of middle cylinder barrel inside is communicated with the chamber of middle cylinder drum outer wall at the same level, is communicated with the chamber of the middle inner wall of cylinder of peer away from the oil-through hole of the cylinder bottom chamber with middle cylinder barrel inside;
It is characterized in that: middle cylinder barrel arranges piston structure near an end of cylinder bottom, between the piston structure of outer cylinder and adjacent middle cylinder barrel, all have Sealing to seal between the piston structure of the inwall of middle cylinder barrel and adjacent middle cylinder barrel; Leave the 5th chamber between middle cylinder barrel and the cylinder bottom, the 5th chamber communicates with the first chamber, and piston rod is equipped with piston near cylinder bottom one end, and the 6th chamber is arranged between piston and cylinder bottom, the 6th chamber communicates with the 5th chamber, and the Sealing sealing is arranged between inner wall of cylinder in the middle of piston and the innermost layer;
The whole series of investigation mission outside the city or town are arranged, the middle cylinder barrel of innermost layer and the sectional area of a whole set of sectional area sum less than piston of transfering to other localities between piston and the cylinder bottom.
2. double-acting multilevel oil cylinder as claimed in claim 1 is characterized in that: be threaded connection between the middle cylinder barrel of transfer to other localities a whole set of and innermost layer and be connected with screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210583642XA CN103016446A (en) | 2012-12-30 | 2012-12-30 | Double-acting multistage oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210583642XA CN103016446A (en) | 2012-12-30 | 2012-12-30 | Double-acting multistage oil cylinder |
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| Publication Number | Publication Date |
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| CN103016446A true CN103016446A (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210583642XA Pending CN103016446A (en) | 2012-12-30 | 2012-12-30 | Double-acting multistage oil cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298980A (en) * | 2015-10-12 | 2016-02-03 | 江苏恒立高压油缸股份有限公司 | Compact type high-reliability double-acting multistage cylinder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63111301A (en) * | 1986-10-27 | 1988-05-16 | Osaka Shiyouriyoku Kikai Kk | Multistage type double acting cylinder |
| FR2634257A1 (en) * | 1988-07-13 | 1990-01-19 | Hardy | Double-action telescopic hydraulic jack. |
| CN2903515Y (en) * | 2006-01-25 | 2007-05-23 | 上海金铸机械制造有限公司 | Multi step telescoping hydraulic cylinder |
| CN201281054Y (en) * | 2009-01-04 | 2009-07-29 | 徐州徐工液压件有限公司 | Novel oil path structure for all-stage stretching of double-acting multi-stage cylinder |
| CN201606344U (en) * | 2010-01-29 | 2010-10-13 | 湖南特力液压有限公司 | Double-acting multistage hydraulic cylinder |
| CN203023168U (en) * | 2012-12-30 | 2013-06-26 | 蚌埠液力机械有限公司 | Double-action multi-level oil cylinder |
-
2012
- 2012-12-30 CN CN201210583642XA patent/CN103016446A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63111301A (en) * | 1986-10-27 | 1988-05-16 | Osaka Shiyouriyoku Kikai Kk | Multistage type double acting cylinder |
| FR2634257A1 (en) * | 1988-07-13 | 1990-01-19 | Hardy | Double-action telescopic hydraulic jack. |
| CN2903515Y (en) * | 2006-01-25 | 2007-05-23 | 上海金铸机械制造有限公司 | Multi step telescoping hydraulic cylinder |
| CN201281054Y (en) * | 2009-01-04 | 2009-07-29 | 徐州徐工液压件有限公司 | Novel oil path structure for all-stage stretching of double-acting multi-stage cylinder |
| CN201606344U (en) * | 2010-01-29 | 2010-10-13 | 湖南特力液压有限公司 | Double-acting multistage hydraulic cylinder |
| CN203023168U (en) * | 2012-12-30 | 2013-06-26 | 蚌埠液力机械有限公司 | Double-action multi-level oil cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298980A (en) * | 2015-10-12 | 2016-02-03 | 江苏恒立高压油缸股份有限公司 | Compact type high-reliability double-acting multistage cylinder |
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Application publication date: 20130403 |