CN201588838U - Cascade hydraulic cylinder - Google Patents

Cascade hydraulic cylinder Download PDF

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Publication number
CN201588838U
CN201588838U CN 200920251665 CN200920251665U CN201588838U CN 201588838 U CN201588838 U CN 201588838U CN 200920251665 CN200920251665 CN 200920251665 CN 200920251665 U CN200920251665 U CN 200920251665U CN 201588838 U CN201588838 U CN 201588838U
Authority
CN
China
Prior art keywords
piston
cylinder
cap
chamber
oil
Prior art date
Application number
CN 200920251665
Other languages
Chinese (zh)
Inventor
李大海
薛伟
金海燕
张营华
王哲
Original Assignee
中国第一重型机械股份公司
天津重型装备工程研究有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中国第一重型机械股份公司, 天津重型装备工程研究有限公司 filed Critical 中国第一重型机械股份公司
Priority to CN 200920251665 priority Critical patent/CN201588838U/en
Application granted granted Critical
Publication of CN201588838U publication Critical patent/CN201588838U/en

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Abstract

A cascade hydraulic cylinder comprises a cylinder tube, an oil-taking nozzle is formed at the lower part of the cylinder tube, a return stroke oil inlet is formed at a cylinder cover at the top part, the cylinder cover is sealed at the upper end of the cylinder tube, a cavity chamber is arranged in the cylinder tube, and a piston is mounted in the cavity chamber; the cylinder tube is divided into a plurality of independent cavity chambers through an inner cover, a piston is mounted in each cavity chamber, the small end of the piston at the lower part passes through the inner cover and directly butts against the lower end part of the piston at the upper part, the piston at the upper part is positioned at the open end of the cylinder tube, and one end of the small end of the piston at the upper part passes through the center of the cylinder head and is led to the exterior; the interlayer inner cover is pressed and fixed through an inner sleeve inlaid and positioned in the cavity chamber at the upper part; an oil guide chamber is arranged in the piston at the lower part; the upper and the lower hydraulic cavity chambers are communicated with each through the oil guide chamber, and simultaneous hydraulic oil feed and discharge of all hydraulic cavities are formed; an air cavity is formed between the piston at the lower part and the inner cover at the upper part; and all air cavity chambers are communicated with the outside air through an air valve on the wall of the cylinder tube. The utility model can provides greater output pressure under the smaller liquid pressure, and meanwhile the volume is relatively small and the operation is flexible and simple.

Description

The cascade oil hydraulic cylinder
Technical field
The utility model relates to hydraulic pressure installation, and a kind of cascade oil hydraulic cylinder that provides relatively large hydraulic power to export under smaller liquid pressure is provided.Belong to the hydraulic machinery manufacturing field of equipment.
Background technique
Existing oil hydraulic cylinder comprises: cylinder barrel, and the cylinder barrel bottom is provided with oil intake nozzle, and the place is provided with the backhaul filler opening at the top cylinder cap, is fixed with cylinder cap on the cylinder barrel, is provided with a chamber in the cylinder barrel, and a piston is installed in the chamber.
At present, existing oil hydraulic cylinder generally is to rely on hydraulic station to provide in the rodless cavity that hydraulic oil is carried in oil hydraulic cylinder, and the piston flat bottoms is produced pressure, promotes the oil hydraulic cylinder motion, and pressure externally is provided.Under the situation of constancy of volume, in order to increase pressure, the method for the fuel feeding pressure of employing increase hydraulic station reaches the purpose of boost pressure usually, perhaps by the secondary booster device, increase the oil pressure that enters oil hydraulic cylinder to improve system pressure, improve the delivery pressure of oil hydraulic cylinder.But, no matter be that hydraulic station provides superelevation pressure or adopts the secondary booster technology to come supercharging, for hydraulic station, hydraulic pipe line, hydraulic control system all can have high requirement, and its cost can also can be multiplied; Simultaneously, also increased the danger of using in the operating process.Therefore, the manufacture difficulty of Superhigh Pressure Hydraulic System is very big.Simultaneously, the size of oil hydraulic cylinder volume has a significant impact the flexibility of single unit system, and volume is more little, and is just low more to the requirement of working environment.
Background technique
The model utility content
Main purpose of the present utility model is to overcome the above-mentioned shortcoming that existing oil hydraulic cylinder exists, and a kind of cascade oil hydraulic cylinder is provided, and it can provide bigger delivery pressure under less liquid pressure, and volume is less relatively simultaneously, and flexible operation is simple.
The purpose of this utility model is realized by following technological scheme:
A kind of cascade oil hydraulic cylinder comprises cylinder barrel, and the cylinder barrel bottom is provided with oil intake nozzle, and the place is provided with the backhaul filler opening at the top cylinder cap, and the cylinder barrel upper end closed has cylinder cap, is provided with chamber in the cylinder barrel, and a piston is installed in the chamber; It is characterized in that: this cylinder barrel is separated into several independent cavity by inner cap, one piston is installed in each chamber, and lower piston microcephaly passes the underpart that inner cap directes reach upper piston, and upper piston is positioned at the cylinder barrel opening end, and upper piston microcephaly's one end passes the cylinder cap center and leads to the outside; The interlayer inner cap presses solidly by being positioned at the cover that upper chamber inlays; Be provided with the Oil Guide chamber in the lower piston, this Oil Guide chamber will be gone up lower hydraulic pressure chamber and will be communicated with, and form the same of each hydraulic pressure cavity hydraulic oil and advance with going out; Form air cavity between lower piston and the top inner cap, each gas chamber communicates with ambient atmosphere by the air valve that is located on the cylinder barrel wall.
Piston seal and piston seal back-up ring are installed in the described lower piston mating groove.
Inner cap sealing and inner cap Sealing shield ring are installed in the peripheral groove of described inner cap.
Sealing and Sealing shield ring are installed in the outer groove of described upper piston.
The little sealing of cylinder cap is installed in the inner groove of described cylinder cap; The cylinder cap sealing is installed in the big annular groove of cylinder cap.
The beneficial effects of the utility model: the utility model is owing to adopt technique scheme, and it can provide bigger delivery pressure under less liquid pressure, and volume is little simultaneously, flexible operation.Easy to manufacture, save cost.
Description of drawings:
Fig. 1 is the utility model structure master cross-sectional schematic.
Fig. 2 is the main cross-sectional schematic of another example of the utility model structure.
Major label description in figure:
1 bolt, 2 packing rings, 3, cylinder cap, the sealing of 4 cylinder caps, cover in 5,6, cylinder barrel, 7 Sealing shield rings, the sealing of 8 big pistons, 9 interior cover sealings, the sealing of 10 inner caps, 11 inner cap Sealing shield rings, 12, inner cap, the little sealing of 13 inner caps, the little Sealing shield ring of 14 inner caps, 15 small pistons, 16, the Oil Guide chamber, 17 oil pockets, the sealing of 18 small pistons, 19 small piston Sealing shield rings, 20 oil intake nozzles, 21 air cavitys, 22 oil pockets, 23 air valves, 24 big pistons, the little sealing of 25 cylinder caps, 26 backhaul filler openings.
Embodiment
Consult Fig. 1-shown in Figure 2, the utility model comprises: cylinder barrel 6, and cylinder barrel 6 bottoms are provided with oil intake nozzle 20,3 places are provided with backhaul filler opening 26 at the top cylinder cap, cylinder barrel 6 upper ends adopt bolt 1, packing ring 2 Placements to be closed with cylinder cap 3, are provided with chamber in the cylinder barrel 6, and a piston is installed in the chamber; Cylinder barrel 6 is separated into several independent cavity by inner cap 12, and present embodiment is: two or 3.Be separately installed with a big small piston 24,15 in each chamber, small piston 15 stub ends place in the lower chamber of cylinder barrel 6, and small piston 15 little head ends in bottom pass the underpart that inner cap 12 directes reach top big piston 24; Top big piston 24 is positioned at the opening end of cylinder barrel 6, and top big piston 24 microcephalies one end passes cylinder cap 3 centers and leads to the outside; Interlayer inner cap 12 presses solidly by being positioned at the cover 5 that upper chamber inlays; Be provided with Oil Guide chamber 16 in the bottom small piston 15, Oil Guide chamber 16 will be gone up lower hydraulic pressure chamber and will be communicated with, and form the same of each hydraulic pressure cavity hydraulic oil and advance with going out; Form air cavity between bottom small piston 15 and the top inner cap 12, each gas chamber communicates with ambient atmosphere by the air valve 23 that is located on the cylinder barrel wall.
Small piston sealing 18, small piston Sealing shield ring 19 are installed in bottom small piston 15 mating grooves;
The little head end of bottom small piston 15 is installed in the endoporus of inner cap 12 by inner cap sealing 10, inner cap Sealing shield ring 11; The peripheral groove of inner cap 12 is installed in the big chamber of cylinder barrel 6 after inner cap sealing 10, inner cap Sealing shield ring 11 are installed; Interior cover 5 is by interior cover sealing 9 upper surfaces that press solidly at inner cap 12; Big piston sealing 8, Sealing shield ring 7 are installed in the outer groove of big piston 24, overlap in 5 inner chambers in big piston 24 is installed in; Cylinder cap sealing 4 is installed in the big annular groove of cylinder cap 3, and the little sealing 25 of cylinder cap is installed in cylinder cap 3 inner grooves.
During work, hydraulic oil is entered in the oil pocket 17 by oil intake nozzle 20, and wherein, a part of hydraulic oil enters in the oil pocket 22 by Oil Guide chamber 16; Promoting up and down, two pistons 24,15 rise simultaneously; Backhaul filler opening 26 is fuel-displaced; Air in the air cavity 21 is communicated with atmosphere by air valve 23; Two pistons 24,15 descend when 26 oil-feeds of backhaul filler opening, and oil intake nozzle 20 is fuel-displaced.
Advantage of the present utility model: the utility model is in an oil hydraulic cylinder, hydraulic pressure cavity is divided into several chambers, the classification piston that employing works alone, connects and exports, each piston hydraulic pressure chamber communicates with one another in inside, both under same pressure, worked separately, with the delivery pressure stack, increase the bearing area of liquid again, improved the delivery pressure under same liquid pressure.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims (5)

1. a cascade oil hydraulic cylinder comprises cylinder barrel, and the cylinder barrel bottom is provided with oil intake nozzle, and the place is provided with the backhaul filler opening at the top cylinder cap, and the cylinder barrel upper end closed has cylinder cap, is provided with chamber in the cylinder barrel, and a piston is installed in the chamber; It is characterized in that: this cylinder barrel is separated into several independent cavity by inner cap, one piston is installed in each chamber, and lower piston microcephaly passes the underpart that inner cap directes reach upper piston, and upper piston is positioned at the cylinder barrel opening end, and upper piston microcephaly's one end passes the cylinder cap center and leads to the outside; The interlayer inner cap presses solidly by being positioned at the cover that upper chamber inlays; Be provided with the Oil Guide chamber in the lower piston, this Oil Guide chamber will be gone up lower hydraulic pressure chamber and will be communicated with, and form the same of each hydraulic pressure cavity hydraulic oil and advance with going out; Form air cavity between lower piston and the top inner cap, each gas chamber communicates with ambient atmosphere by the air valve that is located on the cylinder barrel wall.
2. cascade oil hydraulic cylinder according to claim 1 is characterized in that: piston seal and piston seal back-up ring are installed in the described lower piston mating groove.
3. cascade oil hydraulic cylinder according to claim 1 is characterized in that: inner cap sealing and inner cap Sealing shield ring are installed in the peripheral groove of described inner cap.
4. cascade oil hydraulic cylinder according to claim 1 is characterized in that: sealing and Sealing shield ring are installed in the outer groove of described upper piston.
5. cascade oil hydraulic cylinder according to claim 1 is characterized in that: the little sealing of cylinder cap is installed in the inner groove of described cylinder cap; The cylinder cap sealing is installed in the big annular groove of cylinder cap.
CN 200920251665 2009-12-14 2009-12-14 Cascade hydraulic cylinder CN201588838U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200920251665 CN201588838U (en) 2009-12-14 2009-12-14 Cascade hydraulic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200920251665 CN201588838U (en) 2009-12-14 2009-12-14 Cascade hydraulic cylinder

Publications (1)

Publication Number Publication Date
CN201588838U true CN201588838U (en) 2010-09-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200920251665 CN201588838U (en) 2009-12-14 2009-12-14 Cascade hydraulic cylinder

Country Status (1)

Country Link
CN (1) CN201588838U (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102094857A (en) * 2011-01-13 2011-06-15 北京航空航天大学 High-temperature flexible boosting cylinder
CN103953610A (en) * 2014-04-21 2014-07-30 宁波以赛亚气动成套有限公司 Double-shaft multi-tandem cylinder
CN104339419A (en) * 2013-08-02 2015-02-11 阿托姆公开有限公司 Die-cutting machine with driving assemblies
CN104481964A (en) * 2014-11-20 2015-04-01 大连光洋科技集团有限公司 Pressure-maintaining push-pull cylinder and clamping device using the same
CN106640791A (en) * 2016-12-16 2017-05-10 中国科学院地质与地球物理研究所 Split-type multilayer linkage supercharging oil cylinder
CN107355448A (en) * 2017-09-18 2017-11-17 奉化市亚方索工业自动化有限公司 A kind of combined type pressurized cylinder
CN110273868A (en) * 2019-07-08 2019-09-24 江苏师范大学 A kind of pressurization volume reduction hydraulic accumulator

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102094857A (en) * 2011-01-13 2011-06-15 北京航空航天大学 High-temperature flexible boosting cylinder
CN102094857B (en) * 2011-01-13 2012-12-19 北京航空航天大学 High-temperature flexible boosting cylinder
CN104339419A (en) * 2013-08-02 2015-02-11 阿托姆公开有限公司 Die-cutting machine with driving assemblies
CN103953610A (en) * 2014-04-21 2014-07-30 宁波以赛亚气动成套有限公司 Double-shaft multi-tandem cylinder
CN103953610B (en) * 2014-04-21 2016-03-02 宁波以赛亚气动成套有限公司 Twin shaft many times of strength cylinders
CN104481964A (en) * 2014-11-20 2015-04-01 大连光洋科技集团有限公司 Pressure-maintaining push-pull cylinder and clamping device using the same
CN106640791A (en) * 2016-12-16 2017-05-10 中国科学院地质与地球物理研究所 Split-type multilayer linkage supercharging oil cylinder
CN107355448A (en) * 2017-09-18 2017-11-17 奉化市亚方索工业自动化有限公司 A kind of combined type pressurized cylinder
CN110273868A (en) * 2019-07-08 2019-09-24 江苏师范大学 A kind of pressurization volume reduction hydraulic accumulator
CN110273868B (en) * 2019-07-08 2020-12-25 江苏师范大学 Pressure-increasing volume-reducing hydraulic accumulator

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100922

Termination date: 20131214

C17 Cessation of patent right