CN204692230U - There is the oil cylinder of two step velocitys - Google Patents

There is the oil cylinder of two step velocitys Download PDF

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Publication number
CN204692230U
CN204692230U CN201520329558.4U CN201520329558U CN204692230U CN 204692230 U CN204692230 U CN 204692230U CN 201520329558 U CN201520329558 U CN 201520329558U CN 204692230 U CN204692230 U CN 204692230U
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CN
China
Prior art keywords
core bar
piston rod
cylinder
fluid port
hydraulic fluid
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Active
Application number
CN201520329558.4U
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Chinese (zh)
Inventor
左雁冰
黄维勇
陈�峰
常瑜
何潜
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.)
China National Heavy Machinery Research Institute Co Ltd
Original Assignee
China National Heavy Machinery Research Institute Co Ltd
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Priority to CN201520329558.4U priority Critical patent/CN204692230U/en
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Abstract

Have the oil cylinder of two step velocitys, comprise a piston rod, piston rod inner arranges a core bar, and core bar length and piston rod stroke match, and core bar end is fixed on cylinder bottom, and core bar is provided with core bar hydraulic fluid port; Under oil cylinder is in unloaded operation state, pressure oil injects from core bar hydraulic fluid port, promotes piston rod and moves forward.Arrive behind working position until piston rod, pressure oil injects from large chamber hydraulic fluid port, cylinder efficient speed is at a slow speed, after cylinder efficient terminates, pressure oil injects from loculus hydraulic fluid port, and piston rod returns initial position, and the utility model is by the mode of core bar to the oil pocket oiling of internal piston, stretching out fast of major diameter cylinder piston rod is realized with small flow, not only simple but also the flow of hydraulic system can be reduced.

Description

There is the oil cylinder of two step velocitys
Technical field
The utility model relates to metallurgical machinery equipment technical field, particularly has the oil cylinder of two step velocitys.
Background technique
In order to realize larger cylinder thrust under certain hydraulic system pressure, the cylinder diameter of oil cylinder is general all larger.And in use, General Requirements is in the lost motion stage, the movement speed (no load speed) of piston rod is faster than operating rate.For traditional cylinder structure, need hydraulic system to adopt larger flow to export, for the traffic demand of operating rate, waste larger.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the purpose of this utility model is to provide the oil cylinder with two step velocitys, by arranging the mode of a core bar at internal piston, can to promote piston rod fast moving compared with the hydraulic oil of small flow, to reach the fair speed of oil cylinder at lost motion.
In order to achieve the above object, the technical solution of the utility model is:
Have the oil cylinder of two step velocitys, comprise a piston rod 1, piston rod 1 inside arranges a core bar 4, and core bar 4 length and piston rod 1 stroke match, and core bar 4 end is fixed on cylinder bottom 5, and core bar 4 is provided with core bar hydraulic fluid port 6.
The utility model is by arranging a core bar 4 at internal piston, by core bar 4 fuel feeding time unloaded, by conventional large chamber hydraulic fluid port fuel feeding during work, what make piston rod 1 is extended with two step velocitys, and the utility model is not only simple but also can reduce the flow of hydraulic system.
Accompanying drawing explanation
Accompanying drawing is the utility model exemplary construction schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
With reference to accompanying drawing, there is the oil cylinder of two step velocitys, comprise cylinder barrel 3, be cylinder bottom 5 bottom cylinder barrel 3, cylinder barrel 3 top is cylinder cap 2, and cylinder barrel 3 inside is provided with piston rod 1, piston rod 1 inside arranges a core bar 4, core bar 4 length and piston rod 1 stroke match, and core bar 4 end is fixed on cylinder bottom 5, and core bar 4 is provided with core bar hydraulic fluid port 6.
Working principle of the present utility model is: under oil cylinder is in unloaded operation state, and pressure oil injects from core bar hydraulic fluid port 6, promotes piston rod 1 and moves forward.After piston rod reaches working position to 1, pressure oil injects from large chamber hydraulic fluid port, and cylinder efficient speed is at a slow speed, and after cylinder efficient terminates, pressure oil injects from loculus hydraulic fluid port, and piston rod 1 returns initial position.

Claims (1)

1. there is the oil cylinder of two step velocitys, comprise a piston rod (1), it is characterized in that, piston rod (1) inside arranges a core bar (4), core bar (4) length and piston rod (1) stroke match, core bar (4) end is fixed on cylinder bottom (5), and core bar (4) is provided with core bar hydraulic fluid port (6).
CN201520329558.4U 2015-05-20 2015-05-20 There is the oil cylinder of two step velocitys Active CN204692230U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520329558.4U CN204692230U (en) 2015-05-20 2015-05-20 There is the oil cylinder of two step velocitys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520329558.4U CN204692230U (en) 2015-05-20 2015-05-20 There is the oil cylinder of two step velocitys

Publications (1)

Publication Number Publication Date
CN204692230U true CN204692230U (en) 2015-10-07

Family

ID=54232530

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520329558.4U Active CN204692230U (en) 2015-05-20 2015-05-20 There is the oil cylinder of two step velocitys

Country Status (1)

Country Link
CN (1) CN204692230U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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