CN103256275B - A kind of double acting Hydraulic Cylinder - Google Patents

A kind of double acting Hydraulic Cylinder Download PDF

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Publication number
CN103256275B
CN103256275B CN201310040312.0A CN201310040312A CN103256275B CN 103256275 B CN103256275 B CN 103256275B CN 201310040312 A CN201310040312 A CN 201310040312A CN 103256275 B CN103256275 B CN 103256275B
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CN
China
Prior art keywords
piston rod
cylinder barrel
oil
big
fluid chamber
Prior art date
Application number
CN201310040312.0A
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Chinese (zh)
Other versions
CN103256275A (en
Inventor
刘达兴
郑龙海
沈马炳生
吴芹兰
魏祥祯
Original Assignee
福建省龙岩盛通液压有限公司
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Priority to CN201310040312.0A priority Critical patent/CN103256275B/en
Publication of CN103256275A publication Critical patent/CN103256275A/en
Application granted granted Critical
Publication of CN103256275B publication Critical patent/CN103256275B/en

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Abstract

The present invention discloses a kind of double acting Hydraulic Cylinder, including cylinder barrel, big piston rod, small piston rod, the big piston rod is nested in cylinder barrel and no oil pocket is formed between cylinder barrel, its end is fixed on cylinder barrel by trim ring, the small piston rod is nested in big piston rod and the first fluid chamber and the 3rd fluid chamber is formed between big piston rod, guide sleeve is provided between the two ends of the small piston rod and big piston rod, oil guide pipe is provided with small piston rod, the second fluid chamber is formed between piston rod and small piston rod and cylinder barrel greatly, small piston rod is provided with the first oil inlet and the second oil inlet, the front end of cylinder barrel is provided with the 3rd oil inlet, cylinder barrel is provided with the exhaust outlet communicated with without oil pocket, air bleeder screw plug is provided with exhaust outlet, due to provided with above structure, the double acting Hydraulic Cylinder is compared with existing common oil cylinder, overall structure is more compact, not only there is big thrust, with fast work speed, also there is fast opening speed, improve the normal operation rate of plant equipment.

Description

A kind of double acting Hydraulic Cylinder

Technical field

The present invention relates to technical field of hydraulic oil cylinder, more particularly to a kind of double acting Hydraulic Cylinder.

Background technology

Hydraulic Cylinder is usually used in having compared with high thrust, is used in the plant equipment for having very fast work speed again, it Mainly there are a piston cylinder and a Combined Plunger-type Cylinder to form.Existing Hydraulic Cylinder, has faster speed when work is entered, And in backhaul realized by the diameter of oversize piston bar, so that structure becomes huge, add production cost.

The content of the invention

In order to overcome above shortcomings part in the prior art, it is an object of the invention to provide a kind of double acting is fast Fast hydraulic cylinder, it is driven big piston cylinder by valve piston cylinder, realizes quick return.So as to reduce the diameter of big piston rod, drop Low production cost.Compact conformation, service life is longer.

In order to reach above-mentioned purpose, the present invention uses following concrete technical scheme:A kind of double acting Hydraulic Cylinder, bag Cylinder barrel, big piston rod, small piston rod are included, wherein big piston rod includes big piston, small piston rod includes valve piston, the big piston Bar is nested in cylinder barrel and no oil pocket is formed between cylinder barrel, and its end is fixed on cylinder barrel by trim ring, the small piston rod It is nested in big piston rod and the first fluid chamber and the 3rd fluid chamber, the two ends of the small piston rod is formed between big piston rod It is provided between big piston rod in guide sleeve, small piston rod and is provided with oil guide pipe, oil guide pipe is connected with the first fluid chamber, big piston The second fluid chamber is formed between bar and small piston rod and cylinder barrel, small piston rod is provided with the first oil inlet and the second oil inlet, the One oil inlet is connected with oil guide pipe, and the second oil inlet is connected with the 3rd fluid chamber, and the front end of cylinder barrel is provided with the 3rd oil-feed Mouthful, cylinder barrel, which is provided with the exhaust outlet communicated with without oil pocket, exhaust outlet, is provided with air bleeder screw plug, the 3rd oil inlet and the second fluid chamber It is connected.

Compared with prior art, the present invention has advantage following prominent and effect:Due to provided with above structure, the double cropping Not only there is big thrust with Hydraulic Cylinder, with fast work speed, also with fast opening speed, reduce big piston rod Diameter, so as to alleviate the weight of hydraulic cylinder, so not only reduce production cost, and extend the use of hydraulic jack In the life-span, improve the normal operation rate of plant equipment.

Brief description of the drawings

Fig. 1 is structural representation of the invention;Fig. 2 is small piston rod component of the present invention;

The present invention is described in further detail below in conjunction with the accompanying drawings.

Embodiment

In order to which technical scheme is explained further, the present invention is explained in detail below by specific embodiment State.

As shown in figure 1, a kind of double acting Hydraulic Cylinder, including cylinder barrel 1, big piston rod 2, small piston rod 3, wherein big work Stopper rod includes big piston, and small piston rod includes valve piston, and the big piston rod 2 is nested in cylinder barrel 1 and formed between cylinder barrel 1 Without oil pocket 4, the sealing problem of big piston rod is eliminated, its end is fixed on cylinder barrel 1 by trim ring 5, the small piston rod 3 is embedding It is enclosed in big piston rod 2 and the first fluid chamber 11 and the 3rd fluid chamber 13, the small piston rod 3 is formed between big piston rod 2 Two ends and big piston rod 2 between be provided with guide sleeve 6, oil guide pipe 7, the fluid chamber 11 of oil guide pipe 7 and first are provided with small piston rod 3 It is connected, the second fluid chamber 12 is formed between big piston rod 2 and small piston rod 3 and cylinder barrel 1, the front end of cylinder barrel 1 is provided with the 3rd Oil inlet 23, cylinder barrel 1, which is provided with the exhaust outlet 8 that is communicated with without oil pocket 4, exhaust outlet 8, is provided with air bleeder screw plug 9, and fluid is from the 3rd Oil inlet 23 enters, and realizes larger thrust, in big piston and big piston rod movement, by the gas of oil-free intracavitary from exhaust outlet 8 discharges, the 3rd oil inlet 23 is connected with the second fluid chamber 12, and small piston rod 3 is provided with the first oil inlet 21 and the second oil-feed Mouth 22, the first oil inlet 21 is connected with oil guide pipe 7, and the second oil inlet 22 is connected with the 3rd fluid chamber 13, the first oil inlet 21 by fluid through in the first fluid chamber 11, promote big piston rod and piston quickly to stretch out, realize Hydraulic Cylinder quick Work is entered;Second oil inlet 22 inputs fluid in the 3rd fluid chamber 13, promotes big piston rod and big piston to retract, because the first oil The volume of sap cavity 11 is small, it is achieved thereby that the quick return of Hydraulic Cylinder, the double acting Hydraulic Cylinder not only has big push away Power, with fast work speed, also with fast opening speed, reduces the diameter of big piston rod, so as to alleviate hydraulic cylinder Weight, so not only reduces production cost, and extends the service life of hydraulic jack, improves the normal of plant equipment Running rate.

Example is merely illustrative of the technical solution of the present invention and unrestricted, although being carried out with reference to preferred embodiment to the present invention Describe in detail, it will be understood by those within the art that, technical scheme can be modified or equivalent Replace, without departing from the spirit and scope of technical solution of the present invention, it all should cover among scope of the presently claimed invention.

Claims (1)

1. a kind of double acting Hydraulic Cylinder, including cylinder barrel, big piston rod, small piston rod, it is characterised in that:The big piston rod It is nested in cylinder barrel and no oil pocket is formed between cylinder barrel, its end is fixed on cylinder barrel by trim ring, and the small piston rod is embedding Be enclosed in big piston rod and the first fluid chamber and the 3rd fluid chamber formed between big piston rod, the two ends of the small piston rod with It is provided between big piston rod in guide sleeve, small piston rod and is provided with oil guide pipe, oil guide pipe is connected with the first fluid chamber, big piston rod The second fluid chamber is formed between small piston rod and cylinder barrel, small piston rod is provided with the first oil inlet and the second oil inlet, first Oil inlet is connected with oil guide pipe, and the second oil inlet is connected with the 3rd fluid chamber, and the front end of cylinder barrel is provided with the 3rd oil inlet, Cylinder barrel, which is provided with the exhaust outlet communicated with without oil pocket, exhaust outlet, is provided with air bleeder screw plug, the 3rd oil inlet and the second fluid chamber phase Connection.
CN201310040312.0A 2013-02-01 2013-02-01 A kind of double acting Hydraulic Cylinder CN103256275B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310040312.0A CN103256275B (en) 2013-02-01 2013-02-01 A kind of double acting Hydraulic Cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310040312.0A CN103256275B (en) 2013-02-01 2013-02-01 A kind of double acting Hydraulic Cylinder

Publications (2)

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CN103256275A CN103256275A (en) 2013-08-21
CN103256275B true CN103256275B (en) 2017-07-28

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104405721B (en) * 2014-11-28 2017-08-29 北京林业大学 Double-rod Hydraulic Cylinder
CN104806600B (en) * 2015-04-16 2017-08-08 徐州重型机械有限公司 A kind of speed-changing hydraulic cylinder
CN104863923A (en) * 2015-05-20 2015-08-26 中国重型机械研究院股份公司 Oil cylinder with two-level stretching-out speed
CN105937510A (en) * 2016-06-23 2016-09-14 莱州兴达液压机械科技有限公司 Rapid pressurizing oil cylinder
CN106014348B (en) * 2016-07-18 2019-03-12 天津优瑞纳斯液压机械有限公司 A kind of hydraulic pumping unit
CN106678122B (en) * 2017-02-20 2018-05-04 合肥长源液压股份有限公司 A kind of primary and secondary differential hydro cylinder
CN108425911B (en) * 2018-05-29 2019-09-06 华中科技大学 A kind of cylinder moving type composite hydraulic cylinder

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2178109A (en) * 1985-07-25 1987-02-04 David William Arnold Actuator
CN2200497Y (en) * 1994-08-13 1995-06-14 江苏省连云港市通用机械厂 Hydraulic bending device of reinforcing bar
JP2003002559A (en) * 2001-06-15 2003-01-08 Oil Drive Kogyo Kk Hydraulic jack of hydraulic type elevator and hydraulic circuit using it
CN101092982B (en) * 2007-07-27 2011-06-01 韩顺和 Boosting oil cylinder
CN201344164Y (en) * 2009-01-19 2009-11-11 中国石化集团胜利石油管理局钻井工艺研究院 Combined hydraulic cylinder
CN201714740U (en) * 2010-07-22 2011-01-19 泸州众大科技液压件有限公司 Multifunctional integrated hydraulic cylinder
CN202391858U (en) * 2011-11-22 2012-08-22 江苏龙城洪力液压设备有限公司 Double-stage duel-purpose hydraulic cylinder
CN203230653U (en) * 2013-02-01 2013-10-09 福建省龙岩盛通液压有限公司 Double-acting rapid hydraulic cylinder

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