CN203548412U - Double-acting multistage oil cylinder - Google Patents
Double-acting multistage oil cylinder Download PDFInfo
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- CN203548412U CN203548412U CN201320741884.7U CN201320741884U CN203548412U CN 203548412 U CN203548412 U CN 203548412U CN 201320741884 U CN201320741884 U CN 201320741884U CN 203548412 U CN203548412 U CN 203548412U
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Abstract
The utility model discloses a double-acting multistage oil cylinder. The double-acting multistage oil cylinder comprises four cylinder barrels with one ends closed and the other ends opened, and the four cylinder barrels are respectively the outer cylinder barrel, the first-stage cylinder barrel, the second-stage cylinder barrel and the third-stage cylinder barrel, wherein the outer cylinder barrel, the first-stage cylinder barrel, the second-stage cylinder barrel and the third-stage cylinder barrel are sequentially arranged in an inserted mode from outside to inside. The outer cylinder barrel, the first-stage cylinder barrel and the second-stage cylinder barrel are connected with cylinder barrel covers, the third-stage cylinder barrel is connected with a rod head, and the rod head is provided with a main oil supply hole and a main oil return hole; an oil supply cavity is formed between the closed end of the first-stage cylinder barrel and the closed end of the outer cylinder barrel, an inner cavity of the outer cylinder barrel, an inner cavity of the first-stage cylinder barrel, an inner cavity of the second-stage cylinder barrel and an inner cavity of the third-stage cylinder barrel are sequentially communicated, and the inner cavity of the third-stage cylinder barrel is communicated with the main oil return hole. The oil supply cavity is communicated with the inner cavity of the first-stage cylinder barrel through a first-stage oil supply hole and a first-stage oil passing hole in the end wall of the first-stage cylinder barrel, and the inner cavity of the first-stage cylinder barrel is communicated with the inner cavity of the second-stage cylinder barrel through a second-stage oil supply hole and a second-stage oil passing hole in the end wall of the second-stage cylinder barrel; the oil supply cavity can be communicated with the main oil supply hole through the first-stage oil passing hole, the second-stage oil passing hole and an oil pipe in the third-stage cylinder barrel. The double-acting multistage oil cylinder is compact and simple in structure, oil paths are arranged reasonably and ingeniously, and the double-acting multistage oil cylinder can actively stretch out and actively draw back.
Description
Technical field
The utility model relates to a kind of double-acting multilevel oil cylinder.
Background technique
At present, engineering truck oil cylinder used mostly is one-way cylinder, and this class oil cylinder Linear-phase is slow, pressurize weak effect.In actual applications, can only initiatively stretch out, can not initiatively retract, can only rely on external force and retract.Bring much constant to the use of vehicle.
Summary of the invention
The purpose of this utility model is: overcome the deficiencies in the prior art, a kind of double-acting multilevel oil cylinder that can initiatively stretch out, can initiatively retract is again provided.
In order to solve the problems of the technologies described above, the utility model provides a kind of double-acting multilevel oil cylinder with following structure, and its structural feature is: comprise one end sealing the other end opens wide and interior sidewall surface is cylndrical surface outer cylinder, one-level cylinder barrel, secondary cylinder barrel and three grades of cylinder barrels; On the outer surface of one-level cylinder barrel, secondary cylinder barrel and three grades of cylinder barrels, be equipped with near the ring of the radial projection that closed end arranges separately protruding; The ring of one-level cylinder barrel is protruding to be coordinated with the slipper seal of outer cylinder internal chamber wall, and the ring of secondary cylinder barrel is protruding to be coordinated with the slipper seal of first-stage cylinder tube inner chamber wall, and the ring of three grades of cylinder barrels is protruding to be coordinated with the slipper seal of secondary cylinder tube inner chamber wall; Outer cylinder open end is connected with the outer shell cover coordinating with the slipper seal of one-level cylinder barrel, one-level cylinder barrel open end is connected with the first-stage cylinder cover coordinating with the slipper seal of secondary cylinder barrel, and secondary cylinder barrel open end is connected with the secondary cylinder cover coordinating with three grades of cylinder barrel slipper seals; Three grades of cylinder barrel open ends are connected with the bar head of its inner chamber shutoff, and bar head is provided with total oil inlet hole and total spill port; Between one-level cylinder barrel closed end and outer cylinder closed end, establish oil suction chamber, one-level cylinder barrel is communicated with outer cylinder inner chamber, and secondary cylinder barrel is communicated with first-stage cylinder tube inner chamber, and three grades of cylinder barrels are communicated with the inner chamber of secondary cylinder barrel, and three grades of inner cavity of cylinder are communicated with total spill port; Oil suction chamber is communicated with first-stage cylinder tube inner chamber with the one-level oil-through hole that is positioned at one-level oil inlet hole outside by being located at the one-level oil inlet hole in one-level cylinder barrel end wall center portion, and first-stage cylinder tube inner chamber is communicated with secondary cylinder tube inner chamber with the secondary oil-through hole that is positioned at outside, two-stage oil feeding hole by being located at the two-stage oil feeding hole in secondary cylinder barrel end wall center portion; Oil suction chamber can and be located at three grades of oil pipes in cylinder barrel by one-level oil-through hole, secondary oil-through hole and be communicated with total oil inlet hole.
On the sidewall of described one-level cylinder barrel, secondary cylinder barrel and three grades of cylinder barrels, be equipped with oil through, thereby realize, one-level cylinder barrel is communicated with outer cylinder inner chamber, secondary cylinder barrel is communicated with first-stage cylinder tube inner chamber and three grades of cylinder barrels are communicated with the inner chamber of secondary cylinder barrel.
On the outer surface of described outer cylinder near closed end, be connected with the attachment post connecing for cutting with scissors load.
In sum, the successively sleeve of the utility model by outer cylinder, one-level cylinder barrel, secondary cylinder barrel and three grades of cylinder barrels is connected and the ingenious reasonable Arrangement of oil circuit, not only make compact structure, simple, and make it to have had the dual functions that can initiatively stretch out and initiatively retract.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail:
Fig. 1 is the structural representation of the utility model retracted mode;
Fig. 2 is the structural representation that the utility model stretches out state;
Fig. 3 is the left view of Fig. 1.
Embodiment
See figures.1.and.2, double-acting multilevel oil cylinder comprises outer cylinder 1, one-level cylinder barrel 2, secondary cylinder barrel 3 and three grades of cylinder barrels 4; Above-mentioned cylinder barrel all one end sealing the other end opens wide and has a cylindric inner chamber, and the side wall surface of inner cavity of cylinder is cylndrical surface.On the outer surface of one-level cylinder barrel 2, secondary cylinder barrel 3 and three grades of cylinder barrels 4, be equipped with near the ring of the radial projection that closed end arranges separately protruding, be respectively that one-level ring is protruding 17, two-stage ring protruding 18 and tertiary circulation protruding 19, on above-mentioned ring is protruding, be equipped with seal ring (not shown).The closed end of one-level cylinder barrel 2 inserts in outer cylinder 1, its open end stretches out outer cylinder 1, and one-level ring protruding 17 forms slipper seal matching relationship with outer cylinder 1 internal chamber wall; The closed end of secondary cylinder barrel 2 inserts in one-level cylinder barrel 2, its open end stretches out one-level cylinder barrel 2, and two-stage ring protruding 18 forms slipper seal matching relationship with one-level cylinder barrel 2 internal chamber walls; The closed end of three grades of cylinder barrels 4 inserts in secondary cylinder barrel 3, its open end stretches out secondary cylinder barrel 3, and tertiary circulation protruding 19 forms slipper seal matching relationship with secondary cylinder barrel 3 internal chamber walls.Outer cylinder 1 open end is connected with the outer shell cover 5 coordinating with 2 slipper seals of one-level cylinder barrel, one-level cylinder barrel 3 open ends are connected with the first-stage cylinder cover 6 coordinating with 5 slipper seals of secondary cylinder barrel, and secondary cylinder barrel 3 open ends are connected with the secondary cylinder cover 7 coordinating with three grades of cylinder barrel 4 slipper seals; Three grades of cylinder barrel 4 open ends are connected with the bar head 8 of its inner chamber shutoff, and bar head 8 is provided with total oil inlet hole 9 and total spill port 10.Between one-level cylinder barrel 2 closed ends and outer cylinder closed end, establish oil suction chamber 11; Between one-level cylinder barrel 2 and outer cylinder 1, form the first oil pocket 20, establish one-level oil through 21 on the sidewall of one-level cylinder barrel 2, one-level cylinder barrel 2 inner chambers are communicated with outer cylinder 1 inner chamber by one-level oil through 21; Between secondary cylinder barrel 3 and one-level cylinder barrel 2, form the second oil pocket 22, establish secondary oil through 23 on the sidewall of secondary cylinder barrel 3, secondary cylinder barrel 3 inner chambers are communicated with one-level cylinder barrel 2 inner chambers by secondary oil through 23; Between three grades of cylinder barrels 4 and secondary cylinder barrel 3, form and on the sidewall of 24, three grades of cylinder barrels 4 of the 3rd oil pocket, establish 25, three grades of cylinder barrel 4 inner chambers of three grades of oil throughs and be communicated with the inner chamber of secondary cylinder barrel 3 by three grades of oil throughs 25; Three grades of cylinder barrel 4 inner chambers are that the 4th oil pocket 26 is communicated with total spill port 10.One-level oil inlet hole 12 is established in one-level cylinder barrel 2 end wall center portions, is also set in the one-level oil-through hole 13 in one-level oil inlet hole 12 outsides on one-level cylinder barrel 2 end walls; Two-stage oil feeding hole 14 is established in secondary cylinder barrel 3 end wall center portions, is also provided with the secondary oil-through hole 15 that is positioned at 14 outsides, two-stage oil feeding hole on secondary cylinder barrel 3 end walls; One-level oil inlet hole 12 and 14 positions, two-stage oil feeding hole are corresponding, and oil suction chamber 11 is communicated with one-level cylinder barrel 2 inner chambers by one-level oil inlet hole 12 and one-level oil-through hole 13, and one-level cylinder barrel 2 inner chambers are communicated with secondary cylinder barrel 3 inner chambers by two-stage oil feeding hole 14 and secondary oil-through hole 15.Three grades of cylinder barrel 4 inner chambers are provided with oil pipe 27 in the 4th oil pocket 26, the inlet side port of oil pipe 27 is communicated with total oil inlet hole 9, oil pipe 27 go out and the oil cylinder corresponding with 14 positions, two-stage oil feeding hole of its port after the end wall that end passes three grades of cylinder barrels 4 the going out to hold and can insert in two-stage oil feeding hole 14 of oil pipe 27 when retracted mode, that is to say that oil cylinder is when retracted mode, hydraulic oil can arrive oil suction chamber 11 by total oil inlet hole 9, oil pipe 27, two-stage oil feeding hole 14 and one-level oil inlet hole 12.
With reference to Fig. 3, for easy to connect, on the outer surface of described outer cylinder 1 near closed end, be connected with the attachment post 16 connecing for cutting with scissors load.
The course of action of the double-acting multilevel oil cylinder of said structure is as follows: under the retracted mode shown in Fig. 1, hydraulic oil arrives oil suction chamber 11 through total oil inlet hole 9, oil pipe 27, the total oil inlet hole 9 in two-stage oil feeding hole 14, oil pipe 27, two-stage oil feeding hole 14 and one-level oil inlet hole 12, promote one-level cylinder barrel 2 overhanging, then through one-level oil-through hole 13, promote secondary cylinder barrel 3 overhanging, and then it is overhanging through secondary oil-through hole 15, to promote three grades of cylinder barrels 4; Stretch out in process, the interior hydraulic oil of the first oil pocket 20, the second oil pocket 22, the 3rd oil pocket 24 and the 4th oil pocket 26 flows out through total spill port 10.During retraction, hydraulic oil flows into the 4th oil pocket 26 by total spill port 10 and by three grades of oil throughs 25, enters the 3rd oil pocket 24 and promote three grades of cylinder barrels, 4 retractions, then through secondary oil through 23, enter the second oil pocket 22 and promote secondary cylinder barrel 3 retractions, and then enter the first oil pocket 20 and promote one-level cylinder barrel 2 retractions through one-level oil through 21; In retraction process, hydraulic oil between hydraulic oil between hydraulic oil between outer cylinder 1 closed end and one-level cylinder barrel 2 closed ends, one-level cylinder barrel 2 closed ends and secondary cylinder barrel 3 closed ends and secondary cylinder barrel 3 closed ends and three grades of cylinder barrel 4 closed ends, all flows out by total oil inlet hole 9 by oil pipe 27.
Claims (3)
1. a double-acting multilevel oil cylinder, is characterized in that the outer cylinder (1), one-level cylinder barrel (2), secondary cylinder barrel (3) and the three grades of cylinder barrels (4) that comprise that one end sealing the other end opens wide and interior sidewall surface is cylndrical surface; On the outer surface of one-level cylinder barrel (2), secondary cylinder barrel (3) and three grades of cylinder barrels (4), be equipped with near the ring of the radial projection that closed end arranges separately protruding; The ring of one-level cylinder barrel (2) is protruding to be coordinated with outer cylinder (1) internal chamber wall slipper seal, and the ring of secondary cylinder barrel (3) is protruding to be coordinated with one-level cylinder barrel (2) internal chamber wall slipper seal, and the ring of three grades of cylinder barrels (4) is protruding to be coordinated with secondary cylinder barrel (3) internal chamber wall slipper seal; Outer cylinder (1) open end is connected with the outer shell cover (5) coordinating with one-level cylinder barrel (2) slipper seal, one-level cylinder barrel (3) open end is connected with the first-stage cylinder cover (6) coordinating with secondary cylinder barrel (5) slipper seal, and secondary cylinder barrel (3) open end is connected with the secondary cylinder cover (7) coordinating with three grades of cylinder barrels (4) slipper seal; Three grades of cylinder barrels (4) open end is connected with the bar head (8) of its inner chamber shutoff, and bar head (8) is provided with total oil inlet hole (9) and total spill port (10); Between one-level cylinder barrel (2) closed end and outer cylinder closed end, establish oil suction chamber (11), one-level cylinder barrel (2) is communicated with outer cylinder (1) inner chamber, secondary cylinder barrel (3) is communicated with one-level cylinder barrel (2) inner chamber, three grades of cylinder barrels (4) are communicated with the inner chamber of secondary cylinder barrel (3), and three grades of cylinder barrels (4) inner chamber is communicated with total spill port (10); Oil suction chamber (11) is communicated with one-level cylinder barrel (2) inner chamber by the one-level oil-through hole (13) that is located at the one-level oil inlet hole (12) in one-level cylinder barrel (2) end wall center portion and is positioned at one-level oil inlet hole (12) outside, and one-level cylinder barrel (2) inner chamber is communicated with secondary cylinder barrel (3) inner chamber by the secondary oil-through hole (15) that is located at the two-stage oil feeding hole (14) in secondary cylinder barrel (3) end wall center portion and be positioned at outside two-stage oil feeding hole (14); Oil suction chamber (11) can be communicated with total oil inlet hole (9) by one-level oil-through hole (13), secondary oil-through hole (15) and the oil pipe (27) being located in three grades of cylinder barrels (4).
2. double-acting multilevel oil cylinder as claimed in claim 1, it is characterized in that being equipped with oil through on the sidewall of described one-level cylinder barrel (2), secondary cylinder barrel (3) and three grades of cylinder barrels (4), thereby realize, one-level cylinder barrel (2) is communicated with outer cylinder (1) inner chamber, secondary cylinder barrel (3) is communicated with one-level cylinder barrel (2) inner chamber and three grades of cylinder barrels (4) are communicated with the inner chamber of secondary cylinder barrel (3).
3. double-acting multilevel oil cylinder as claimed in claim 1 or 2, is characterized in that described outer cylinder (1) is connected with near on the outer surface of closed end the attachment post (16) connecing for cutting with scissors load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320741884.7U CN203548412U (en) | 2013-11-22 | 2013-11-22 | Double-acting multistage oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320741884.7U CN203548412U (en) | 2013-11-22 | 2013-11-22 | Double-acting multistage oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548412U true CN203548412U (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320741884.7U Expired - Fee Related CN203548412U (en) | 2013-11-22 | 2013-11-22 | Double-acting multistage oil cylinder |
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| Country | Link |
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| CN (1) | CN203548412U (en) |
Cited By (4)
| 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 |
| CN105298982A (en) * | 2015-11-03 | 2016-02-03 | 内蒙古北方重工业集团有限公司 | Double-acting multi-stage telescopic oil cylinder |
| CN105715613A (en) * | 2014-12-04 | 2016-06-29 | 中联重科股份有限公司 | Multi-stage oil cylinder |
| CN108397442A (en) * | 2018-05-09 | 2018-08-14 | 湖北佳恒科技股份有限公司 | A kind of new structural preset type hydraulic cylinder |
-
2013
- 2013-11-22 CN CN201320741884.7U patent/CN203548412U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715613A (en) * | 2014-12-04 | 2016-06-29 | 中联重科股份有限公司 | Multi-stage oil cylinder |
| CN105715613B (en) * | 2014-12-04 | 2017-09-26 | 中联重科股份有限公司 | Multi-stage oil cylinder |
| 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 |
| CN105298982A (en) * | 2015-11-03 | 2016-02-03 | 内蒙古北方重工业集团有限公司 | Double-acting multi-stage telescopic oil cylinder |
| CN108397442A (en) * | 2018-05-09 | 2018-08-14 | 湖北佳恒科技股份有限公司 | A kind of new structural preset type hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG JINGDIAN MECHANICAL AND ELECTRICAL ENGINE Free format text: FORMER NAME: SHANDONG GANGZHIJIE ELECTROMECHANICAL MANUFACTURING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 262200 longitudinal road, industrial zone, Shun Wang street, Zhucheng City, Shandong, Weifang Patentee after: The classical electromechanical engineering Co., Ltd in Shandong Address before: 262200 longitudinal road, industrial zone, Shun Wang street, Zhucheng City, Shandong, Weifang Patentee before: SHANDONG GANGZHIJIE ELECTROMECHANICAL MANUFACTURING CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20201122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |