CN202690578U - Rapid oil cylinder - Google Patents

Rapid oil cylinder Download PDF

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Publication number
CN202690578U
CN202690578U CN 201220360929 CN201220360929U CN202690578U CN 202690578 U CN202690578 U CN 202690578U CN 201220360929 CN201220360929 CN 201220360929 CN 201220360929 U CN201220360929 U CN 201220360929U CN 202690578 U CN202690578 U CN 202690578U
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CN
China
Prior art keywords
cylinder
plunger
piston rod
piston
quick
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CN 201220360929
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Chinese (zh)
Inventor
程三红
陈应坚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG HUACHANG HYDRAUTIC MACHINERY CO Ltd
Original Assignee
ZHEJIANG HUACHANG HYDRAUTIC MACHINERY CO Ltd
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 ZHEJIANG HUACHANG HYDRAUTIC MACHINERY CO Ltd filed Critical ZHEJIANG HUACHANG HYDRAUTIC MACHINERY CO Ltd
Priority to CN 201220360929 priority Critical patent/CN202690578U/en
Application granted granted Critical
Publication of CN202690578U publication Critical patent/CN202690578U/en
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Abstract

The utility model relates to a rapid oil cylinder, comprising a cylinder barrel, a cylinder body, a piston and a piston rod. The rapid oil cylinder is characterized in that an inner plunger is arranged inside the cylinder barrel; the inner plunger and the piston rod are on the same shaft axis; an inner hole is arranged on the piston rod; the inner plunger is movably sleeved in a hole of the piston rod; the inner plunger extends out of the cylinder barrel; and the extension end of the inner plunger is fixedly connected with the cylinder body by virtue of a bolt. According to the rapid oil cylinder, switching at high and low speeds can be automatically achieved according to different requirements, and the rapid oil cylinder is simple and convenient to operate and obvious in effect.

Description

A kind of Quick cylinder
Technical field
The utility model relates to a kind of hydraulic equipment, relates in particular to a kind of fast hydraulic pressure oil cylinder.
Background technique
Some hydraulic jack needs quick operation sometimes when operation, the structure of prior art Quick cylinder has multiple.Such as Chinese patent CN102182720A Dual-speed cylinder, it mainly comprises cylinder body, the oil cylinder protecgulum, the oil cylinder bonnet, large piston and moving piston rod, the cylinder body the other end forms seal space by oil cylinder protecgulum and moving piston rod, large piston is arranged on an end of moving piston rod, moving piston rod is hollow structure, in moving piston rod, be provided with the fixed piston bar, the fixed piston bar is that hollow structure and two ends communicate, fixed piston bar one end is connected with the oil cylinder bonnet, the moving end of piston rod in cylinder body is by large piston and fixed piston bar closed front, and large piston is slidingly connected at the fixed piston bar.This Dual-speed cylinder adopts the compression areas of the different sizes of moving piston rod and large piston to realize the change of thrust, simultaneously can be when using less compression area oil cylinder push away fast and retraction speed fast, can greatly improve splitting speed, the raising operating efficiency.
Summary of the invention
The utility model main purpose is: solve the existing deficiency of prior art, thereby develop fast hydraulic pressure oil cylinder a kind of simple in structure, easy for installation.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of Quick cylinder, comprise cylinder barrel, cylinder body, piston and piston rod, it is characterized in that: in the described cylinder barrel inner plunger is housed, described inner plunger and piston rod are in same shaft axis, and described piston rod has an endoporus, and described inner plunger kink is in the piston rod hole.
The technical solution of the utility model can also be further perfect:
As preferably, described inner plunger is stretched out cylinder barrel, and described inner plunger external part is fixedly connected with cylinder body with bolt.
As preferably, the end of described piston rod endoporus is provided with the quick oil feeding mouth.
As preferably, between described inner plunger and the cylinder body and between piston rod and the inner plunger Sealing is housed.
The beneficial effects of the utility model are: owing in the cylinder barrel inner plunger and quick oil feeding mouth are housed, be provided with modulating valve, and can be according to different needs, automatically realize the switching between the fast jogging speed, simple to operation, its effect is remarkable, simple in structure, reliable, easy for installation.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model.
Description of reference numerals: 1, piston rod, 2, cylinder barrel, 3, inner plunger, 4, Sealing, 5, piston, 6, bolt, 7, cylinder body, 8, filler opening at a slow speed, 9, the quick oil feeding mouth.
Direction among the figure: by the upper position of figure, Zuo Weihou is before the right side is.
Embodiment
Below by embodiment also by reference to the accompanying drawings, the technical solution of the utility model is further described in detail.
Embodiment:
Quick cylinder as shown in the figure is equipped with piston 5 and piston rod 1 in the cylinder tube 2, the piston of present embodiment and piston rod are Same Part.Inner plunger 3 also is housed in the described cylinder barrel, described inner plunger and piston rod are in same shaft axis, described piston rod 1 has an endoporus, described inner plunger 3 kinks are in the piston rod hole, described piston rod can move front and back on inner plunger, described inner plunger is stretched out cylinder barrel, and the inner plunger external part is fixedly connected with cylinder body 7 with bolt.Sealing 4 is arranged between described piston rod and the inner plunger, and the piston rod front end has quick oil feeding mouth 9, forms a quick oil pocket between described piston rod and the inner plunger.
Under normal circumstances, fluid is from after filler opening 8 enters piston 5 at a slow speed, the push piston reach.When piston needed fast reach, fluid entered piston rod 1 endoporus from the quick oil feeding mouth, and piston rod moves forward fast, and its fast velocity depends on the ratio of the sectional area of piston 5 and inner plunger 3.

Claims (4)

1. a Quick cylinder comprises cylinder barrel, cylinder body, and piston and piston rod is characterized in that: in the described cylinder barrel inner plunger is housed, described inner plunger and piston rod are in same shaft axis, and described piston rod has an endoporus, and described inner plunger kink is in the piston rod hole.
2. Quick cylinder according to claim 1, it is characterized in that: described inner plunger is stretched out cylinder barrel, and described inner plunger external part is fixedly connected with cylinder body with bolt.
3. according to claims 1 or 2 described a kind of Quick cylinders, it is characterized in that: the end of described piston rod endoporus is provided with the quick oil feeding mouth.
4. according to claims 1 or 2 described a kind of Quick cylinders, it is characterized in that: between described inner plunger and the cylinder body and between piston rod and the inner plunger Sealing is housed.
CN 201220360929 2012-07-25 2012-07-25 Rapid oil cylinder Active CN202690578U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220360929 CN202690578U (en) 2012-07-25 2012-07-25 Rapid oil cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220360929 CN202690578U (en) 2012-07-25 2012-07-25 Rapid oil cylinder

Publications (1)

Publication Number Publication Date
CN202690578U true CN202690578U (en) 2013-01-23

Family

ID=47546204

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220360929 Active CN202690578U (en) 2012-07-25 2012-07-25 Rapid oil cylinder

Country Status (1)

Country Link
CN (1) CN202690578U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103867525A (en) * 2014-04-08 2014-06-18 武汉科技大学 Variable speed double-piston series-connection hydraulic cylinder
CN104405721A (en) * 2014-11-28 2015-03-11 北京林业大学 Double-rod rapid hydraulic cylinder
CN105545873A (en) * 2016-01-21 2016-05-04 海天塑机集团有限公司 Internal differential cylinder structure and injection method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103867525A (en) * 2014-04-08 2014-06-18 武汉科技大学 Variable speed double-piston series-connection hydraulic cylinder
CN104405721A (en) * 2014-11-28 2015-03-11 北京林业大学 Double-rod rapid hydraulic cylinder
CN104405721B (en) * 2014-11-28 2017-08-29 北京林业大学 Double-rod Hydraulic Cylinder
CN105545873A (en) * 2016-01-21 2016-05-04 海天塑机集团有限公司 Internal differential cylinder structure and injection method thereof

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