CN105298986A - Crane slender telescopic cylinder - Google Patents
Crane slender telescopic cylinder Download PDFInfo
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- CN105298986A CN105298986A CN201510655422.7A CN201510655422A CN105298986A CN 105298986 A CN105298986 A CN 105298986A CN 201510655422 A CN201510655422 A CN 201510655422A CN 105298986 A CN105298986 A CN 105298986A
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- sleeve pipe
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- stage piston
- oil duct
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Abstract
The invention discloses a crane slender telescopic cylinder. The crane slender telescopic cylinder comprises a cylinder barrel, a first-stage piston rod, a second-stage piston rod and a rod head; a first sleeve pipe is arranged between the first-stage piston rod and the second-stage piston rod; a second sleeve pipe, a third sleeve pipe and a fourth sleeve pipe are arranged in the second-stage piston rod; the crane slender telescopic cylinder further comprises a first rodless cavity, a second rodless cavity, a first rod cavity, a first oil duct, a second rod cavity, a second oil duct and a third oil duct; the first rod cavity, the first oil duct, the second rod cavity and the second oil duct are communicated with one another; the second rodless cavity is communicated with the third oil duct; a first oil hole, a second oil hole and a third oil hole are formed in the rod head; the first oil hole is communicated with the inner cavity of the fourth sleeve pipe; the inner cavity of the fourth sleeve pipe is communicated with the first rodless cavity; the second oil hole is communicated with the third oil duct; and the third oil hole is communicated with the second oil duct. Through the above mode, the crane slender telescopic cylinder disclosed by the invention is simple and reasonable in structure; and the rodless cavity in each stage of oil cylinder can be separately controlled, so that each stage of piston rod of the telescopic cylinder can separately extend out.
Description
Technical field
The present invention relates to oil cylinder technical field, particularly relate to the elongated telescopic oil cylinder of a kind of loop wheel machine.
Background technique
Crane is a kind of hoisting and transporting tool being widely used in the places such as harbour, workshop, electric power, building site.This title of crane is the title that Hoisting Machinery is unified.Frequent main still mobile crane, crawler crane and the tyre crane being crane.The use of crane is hanging device, speedily carries out rescue work, lifting, machinery, rescue.
Telescopic oil cylinder is the basis of Telescopic boom crane, and existing this crane telescopic oil cylinder can not allow every one-level piston rod independently stretch out, and can not meet the usage requirement under particular surroundings, need to improve.
Summary of the invention
The technical problem that the present invention mainly solves is to provide the elongated telescopic oil cylinder of a kind of loop wheel machine, simple and reasonable, can control separately the rodless cavity of every one-level oil cylinder, thus every one-level piston rod of telescopic oil cylinder can independently be stretched out.
For solving the problems of the technologies described above, the technological scheme that the present invention adopts is: provide a kind of loop wheel machine elongated telescopic oil cylinder, comprise: cylinder barrel, be arranged on the first stage piston bar of described cylinder barrel inside and be arranged on the second piston rod of described first stage piston bar inside, the rear end of described cylinder barrel has rear end cover, the first sleeve pipe is also provided with between described first stage piston bar and second piston rod, described second piston rod inside is also disposed with the second sleeve pipe from outside to inside, 3rd sleeve pipe and Quadruplet pipe, the rear end of described first stage piston bar has first stage piston, the first rodless cavity is formed between described first stage piston and rear end cover, the rear end of described second piston rod has second piston, there is between described first stage piston and second piston a stop collar, described stop collar inside is fixed with a sliding bar,
The first rod chamber is formed between described cylinder barrel and first stage piston bar, the first oil duct is formed between described first stage piston bar and the first sleeve pipe, the second rod chamber is formed between described first sleeve pipe and second piston rod, the second oil duct is formed between described second piston rod and the second sleeve pipe, the 3rd oil duct is formed between described second sleeve pipe and the 3rd sleeve pipe, described first stage piston bar has the first radial duct, described first radial hole link first rod chamber and the first oil duct, described first sleeve pipe has the second radial duct, described second radial hole link first oil duct and the second rod chamber, described second piston has the 3rd radial duct, described 3rd radial hole link second rod chamber and the second oil duct,
Be welded to connect between the rearward end of described sliding bar and the 3rd sleeve pipe, described stop collar, form the second rodless cavity between second piston and the 3rd sleeve pipe, described second rodless cavity is connected with the 3rd oil duct;
Described first stage piston and inner wall of cylinder sliding connection, be provided with one-level guide sleeve between the front end of described cylinder barrel and first stage piston bar, sliding connection between described first stage piston bar and one-level guide sleeve; The inwall sliding connection of described second piston and the first sleeve pipe, secondary guide sleeve is provided with between the front end of described first stage piston bar and second piston rod, the two ends of described first sleeve pipe are against on stop collar and secondary guide sleeve respectively, sliding connection between described second piston rod and secondary guide sleeve, the front end of described second piston rod is connected with bar head, and the front end of described second sleeve pipe and Quadruplet pipe is all connected on bar head;
Described bar head have the first hydraulic fluid port, the second hydraulic fluid port and the 3rd hydraulic fluid port, the intracavity inter-connection of described first hydraulic fluid port and Quadruplet pipe, the inner chamber of described Quadruplet pipe is connected with the first rodless cavity, and described second hydraulic fluid port is connected with the 3rd oil duct, and described 3rd hydraulic fluid port is connected with the second oil duct.
In a preferred embodiment of the present invention, the front end of described 3rd sleeve pipe is welded with a sliding sleeve, is tightly connected, has gap between described sliding sleeve and the second sleeve pipe between described sliding sleeve and Quadruplet pipe, and the oil of described second hydraulic fluid port enters the 3rd oil duct from gap.
In a preferred embodiment of the present invention, described second piston rod is also provided with stop tube near second piston place.
In a preferred embodiment of the present invention, described one-level guide sleeve is pressed on cylinder barrel by the first gland, and described secondary guide sleeve is pressed on first stage piston bar by the second gland.
In a preferred embodiment of the present invention, between described stop collar and sliding bar, there is seal ring.
In a preferred embodiment of the present invention, between the outer wall of described first sleeve pipe and first stage piston, there is seal ring, between the inwall of described first sleeve pipe and stop collar, there is seal ring.
The invention has the beneficial effects as follows: the elongated telescopic oil cylinder of loop wheel machine of the present invention, simple and reasonable, the rodless cavity of every one-level oil cylinder can be controlled separately, thus every one-level piston rod of telescopic oil cylinder can independently be stretched out.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of loop wheel machine of the present invention elongated telescopic oil cylinder one preferred embodiment;
Fig. 2 is the partial enlarged drawing of A in Fig. 1;
Fig. 3 is the partial enlarged drawing of B in Fig. 1;
Fig. 4 is the left view of Fig. 1.
In accompanying drawing, the mark of each parts is as follows: 1, cylinder barrel, 2, first stage piston bar, 3, second piston rod, 4, rear end cover, 5, first sleeve pipe, 6, second sleeve pipe, 7, 3rd sleeve pipe, 8, Quadruplet pipe, 9, first stage piston, 10, first rodless cavity, 11, second piston, 12, stop collar, 13, sliding bar, 14, first rod chamber, 15, first oil duct, 16, second rod chamber, 17, second oil duct, 18, 3rd oil duct, 19, first radial duct, 20, second radial duct, 21, 3rd radial duct, 22, second rodless cavity, 23, one-level guide sleeve, 24, secondary guide sleeve, 25, bar head, 26, first hydraulic fluid port, 27, second hydraulic fluid port, 28, 3rd hydraulic fluid port, 29, sliding sleeve, 30, stop tube, 31, first gland, 32, second gland.
Embodiment
Be clearly and completely described to the technological scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1 to Fig. 4, the embodiment of the present invention comprises:
The elongated telescopic oil cylinder of a kind of loop wheel machine, comprise: cylinder barrel 1, be arranged on the first stage piston bar 2 of described cylinder barrel 1 inside and be arranged on the second piston rod 3 of described first stage piston bar 2 inside, the rear end of described cylinder barrel 1 has rear end cover 4, the first sleeve pipe 5 is also provided with between described first stage piston bar 2 and second piston rod 3, described second piston rod 3 inside is also disposed with the second sleeve pipe 6 from outside to inside, 3rd sleeve pipe 7 and Quadruplet pipe 8, the rear end of described first stage piston bar 2 has first stage piston 9, the first rodless cavity 10 is formed between described first stage piston 9 and rear end cover, the rear end of described second piston rod 3 has second piston 11, described second piston rod is also provided with stop tube 30 near second piston place, there is between described first stage piston 9 and second piston 11 stop collar 12, described stop collar 12 inside is fixed with a sliding bar 13, between described stop collar 12 and sliding bar 13, there is seal ring.
The first rod chamber 14 is formed between described cylinder barrel 1 and first stage piston bar 2, the first oil duct 15 is formed between described first stage piston bar 2 and the first sleeve pipe 5, the second rod chamber 16 is formed between described first sleeve pipe 5 and second piston rod 3, the second oil duct 17 is formed between described second piston rod 3 and the second sleeve pipe 6, the 3rd oil duct 18 is formed between described second sleeve pipe 6 and the 3rd sleeve pipe 7, described first stage piston bar 2 has the first radial duct 19, described first radial duct 19 is communicated with the first rod chamber 14 and the first oil duct 15, described first sleeve pipe 5 has the second radial duct 20, described second radial duct 20 is communicated with the first oil duct 15 and the second rod chamber 16, described second piston 11 has the 3rd radial duct 21, described 3rd radial duct 21 is communicated with the second rod chamber 16 and the second oil duct 17, pass through said structure, first rod chamber, first oil duct, second rod chamber, be connected successively between second oil duct, form overall rod chamber.
Be welded to connect between the rearward end of described sliding bar 13 and the 3rd sleeve pipe 7, described stop collar 12, between second piston 11 and the 3rd sleeve pipe 7, form the second rodless cavity 22, described second rodless cavity 22 and the 3rd oil duct phase 18 are communicated with, pass through said structure, second rodless cavity 22 and the first rodless cavity completely isolated, when oil-filled in the second rodless cavity, second piston rod can be made to stretch out separately.
Described first stage piston 9 and inner wall of cylinder sliding connection, be provided with one-level guide sleeve 23 between the front end of described cylinder barrel and first stage piston bar, sliding connection between described first stage piston bar and one-level guide sleeve; The inwall sliding connection of described second piston 11 and the first sleeve pipe, secondary guide sleeve 24 is provided with between the front end of described first stage piston bar and second piston rod, the two ends of described first sleeve pipe 5 are against on stop collar and secondary guide sleeve respectively, sliding connection between described second piston rod and secondary guide sleeve, the front end of described second piston rod is connected with bar head 25, and the front end of described second sleeve pipe 6 and Quadruplet pipe 8 is all connected on bar head 25.
Described bar head 25 have the first hydraulic fluid port 26, second hydraulic fluid port 27 and the 3rd hydraulic fluid port 28, the intracavity inter-connection of described first hydraulic fluid port 26 and Quadruplet pipe 8, the inner chamber of described Quadruplet pipe 8 is connected with the first rodless cavity, and time oil-filled from the first hydraulic fluid port 26, then first stage piston bar stretches out; Described second hydraulic fluid port 27 is connected with the 3rd oil duct 18, and described 3rd hydraulic fluid port 28 is connected with the second oil duct 17.
The front end of described 3rd sleeve pipe 7 is welded with a sliding sleeve 29, be tightly connected between described sliding sleeve 29 and Quadruplet pipe 8, between described sliding sleeve 29 and the second sleeve pipe 6, there is gap, the oil of described second hydraulic fluid port 27 enters the 3rd oil duct 18 from gap, then enter the second rodless cavity, second piston rod is stretched out separately, process mistake is stretched out at second piston rod, 3rd sleeve pipe 7 is motionless, and the second sleeve pipe and Quadruplet pipe stretch out along with first of bar, and produces relative sliding between the 3rd sleeve pipe.
Preferably, described one-level guide sleeve 23 is pressed on cylinder barrel by the first gland 31, and described secondary guide sleeve 24 is pressed on first stage piston bar by the second gland 32, and the split design of guide sleeve effectively can avoid the creeping phenomenon in Multi-stage cylinder expansion process.
Preferably, the rear end of described first sleeve pipe is clipped between first stage piston and stop collar, and has seal ring between the outer wall of the first sleeve pipe and first stage piston, also has seal ring between the inwall of described first sleeve pipe and stop collar.
Working principle of the present invention is as follows:
When oil-filled from the first hydraulic fluid port 26, then first stage piston bar stretches out; When oil-filled from the second hydraulic fluid port 27, then second piston rod stretches out; When oil-filled from the 3rd hydraulic fluid port 28, first stage piston bar and second piston rod are retracted.
The invention has the beneficial effects as follows: the elongated telescopic oil cylinder of loop wheel machine of the present invention, simple and reasonable, the rodless cavity of every one-level oil cylinder can be controlled separately, thus every one-level piston rod of telescopic oil cylinder can independently be stretched out.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. the elongated telescopic oil cylinder of loop wheel machine, it is characterized in that, comprise: cylinder barrel, be arranged on the first stage piston bar of described cylinder barrel inside and be arranged on the second piston rod of described first stage piston bar inside, the rear end of described cylinder barrel has rear end cover, the first sleeve pipe is also provided with between described first stage piston bar and second piston rod, described second piston rod inside is also disposed with the second sleeve pipe from outside to inside, 3rd sleeve pipe and Quadruplet pipe, the rear end of described first stage piston bar has first stage piston, the first rodless cavity is formed between described first stage piston and rear end cover, the rear end of described second piston rod has second piston, there is between described first stage piston and second piston a stop collar, described stop collar inside is fixed with a sliding bar,
The first rod chamber is formed between described cylinder barrel and first stage piston bar, the first oil duct is formed between described first stage piston bar and the first sleeve pipe, the second rod chamber is formed between described first sleeve pipe and second piston rod, the second oil duct is formed between described second piston rod and the second sleeve pipe, the 3rd oil duct is formed between described second sleeve pipe and the 3rd sleeve pipe, described first stage piston bar has the first radial duct, described first radial hole link first rod chamber and the first oil duct, described first sleeve pipe has the second radial duct, described second radial hole link first oil duct and the second rod chamber, described second piston has the 3rd radial duct, described 3rd radial hole link second rod chamber and the second oil duct,
Be welded to connect between the rearward end of described sliding bar and the 3rd sleeve pipe, described stop collar, form the second rodless cavity between second piston and the 3rd sleeve pipe, described second rodless cavity is connected with the 3rd oil duct;
Described first stage piston and inner wall of cylinder sliding connection, be provided with one-level guide sleeve between the front end of described cylinder barrel and first stage piston bar, sliding connection between described first stage piston bar and one-level guide sleeve; The inwall sliding connection of described second piston and the first sleeve pipe, secondary guide sleeve is provided with between the front end of described first stage piston bar and second piston rod, the two ends of described first sleeve pipe are against on stop collar and secondary guide sleeve respectively, sliding connection between described second piston rod and secondary guide sleeve, the front end of described second piston rod is connected with bar head, and the front end of described second sleeve pipe and Quadruplet pipe is all connected on bar head;
Described bar head have the first hydraulic fluid port, the second hydraulic fluid port and the 3rd hydraulic fluid port, the intracavity inter-connection of described first hydraulic fluid port and Quadruplet pipe, the inner chamber of described Quadruplet pipe is connected with the first rodless cavity, and described second hydraulic fluid port is connected with the 3rd oil duct, and described 3rd hydraulic fluid port is connected with the second oil duct.
2. the elongated telescopic oil cylinder of loop wheel machine according to claim 1, it is characterized in that, the front end of described 3rd sleeve pipe is welded with a sliding sleeve, be tightly connected between described sliding sleeve and Quadruplet pipe, have gap between described sliding sleeve and the second sleeve pipe, the oil of described second hydraulic fluid port enters the 3rd oil duct from gap.
3. the elongated telescopic oil cylinder of loop wheel machine according to claim 1, is characterized in that, described second piston rod is also provided with stop tube near second piston place.
4. the elongated telescopic oil cylinder of loop wheel machine according to claim 1, is characterized in that, described one-level guide sleeve is pressed on cylinder barrel by the first gland, and described secondary guide sleeve is pressed on first stage piston bar by the second gland.
5. the elongated telescopic oil cylinder of loop wheel machine according to claim 1, is characterized in that, has seal ring between described stop collar and sliding bar.
6. the elongated telescopic oil cylinder of loop wheel machine according to claim 1, is characterized in that, has seal ring between the outer wall of described first sleeve pipe and first stage piston, has seal ring between the inwall of described first sleeve pipe and stop collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510655422.7A CN105298986B (en) | 2015-10-12 | 2015-10-12 | The elongated telescopic oil cylinder of loop wheel machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510655422.7A CN105298986B (en) | 2015-10-12 | 2015-10-12 | The elongated telescopic oil cylinder of loop wheel machine |
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| Publication Number | Publication Date |
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| CN105298986A true CN105298986A (en) | 2016-02-03 |
| CN105298986B CN105298986B (en) | 2018-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510655422.7A Active CN105298986B (en) | 2015-10-12 | 2015-10-12 | The elongated telescopic oil cylinder of loop wheel machine |
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| Country | Link |
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| CN (1) | CN105298986B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468676A (en) * | 2018-07-24 | 2018-08-31 | 江苏恒立液压股份有限公司 | Secondary cylinder |
| CN108644180A (en) * | 2018-06-28 | 2018-10-12 | 江苏恒立液压股份有限公司 | The chocking construction and oil cylinder of piston rod |
| CN112320635A (en) * | 2020-11-11 | 2021-02-05 | 三一汽车起重机械有限公司 | Piston rod of telescopic oil cylinder, telescopic oil cylinder and crane |
| CN112648260A (en) * | 2020-12-11 | 2021-04-13 | 昆山奇力特油缸液压设备有限公司 | Multi-stage cylinder |
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| JPH08295492A (en) * | 1995-04-27 | 1996-11-12 | Tokiyoshi Kuroda | Multistage expansion arm device |
| CN201972996U (en) * | 2011-04-22 | 2011-09-14 | 辽宁光大机械制造有限公司 | Homolateral double-rod oil cylinder |
| JP2012067911A (en) * | 2010-08-25 | 2012-04-05 | Kobelco Cranes Co Ltd | Multi-stage expansion and contraction cylinder |
| CN202280689U (en) * | 2011-10-31 | 2012-06-20 | 湖南特力液压有限公司 | Multistage hydraulic cylinder |
| CN102562710A (en) * | 2012-02-13 | 2012-07-11 | 莱州兴达液压机械有限公司 | Secondary oil cylinder of wood splitting machine |
| CN205025864U (en) * | 2015-10-12 | 2016-02-10 | 江苏恒立高压油缸股份有限公司 | Long and thin flexible hydro -cylinder of loop wheel machine |
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2015
- 2015-10-12 CN CN201510655422.7A patent/CN105298986B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08295492A (en) * | 1995-04-27 | 1996-11-12 | Tokiyoshi Kuroda | Multistage expansion arm device |
| JP2012067911A (en) * | 2010-08-25 | 2012-04-05 | Kobelco Cranes Co Ltd | Multi-stage expansion and contraction cylinder |
| CN201972996U (en) * | 2011-04-22 | 2011-09-14 | 辽宁光大机械制造有限公司 | Homolateral double-rod oil cylinder |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644180A (en) * | 2018-06-28 | 2018-10-12 | 江苏恒立液压股份有限公司 | The chocking construction and oil cylinder of piston rod |
| CN108468676A (en) * | 2018-07-24 | 2018-08-31 | 江苏恒立液压股份有限公司 | Secondary cylinder |
| CN112320635A (en) * | 2020-11-11 | 2021-02-05 | 三一汽车起重机械有限公司 | Piston rod of telescopic oil cylinder, telescopic oil cylinder and crane |
| CN112648260A (en) * | 2020-12-11 | 2021-04-13 | 昆山奇力特油缸液压设备有限公司 | Multi-stage cylinder |
| CN112648260B (en) * | 2020-12-11 | 2024-05-28 | 昆山奇力特油缸液压设备有限公司 | Multistage cylinder |
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| CN105298986B (en) | 2018-01-23 |
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Address after: 213167, No. 99, long hidden Road, Wujin hi tech Development Zone, Jiangsu, Changzhou Applicant after: JIANGSU HENGLI HYDRAULIC CO., LTD. Address before: 213167, No. 99, long hidden Road, Wujin hi tech Development Zone, Jiangsu, Changzhou Applicant before: Jiangsu Hengli High Pressure Oil Cylinder Co., Ltd. |
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