CN107366658A - A kind of plunger - Google Patents

A kind of plunger Download PDF

Info

Publication number
CN107366658A
CN107366658A CN201710782999.3A CN201710782999A CN107366658A CN 107366658 A CN107366658 A CN 107366658A CN 201710782999 A CN201710782999 A CN 201710782999A CN 107366658 A CN107366658 A CN 107366658A
Authority
CN
China
Prior art keywords
sealing ring
sleeve pipe
plunger
ring
sleeve
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.)
Pending
Application number
CN201710782999.3A
Other languages
Chinese (zh)
Inventor
陈涉
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.)
NINGBO DONGHU HYDRAULIC TRANSMISSION Co Ltd
Original Assignee
NINGBO DONGHU HYDRAULIC TRANSMISSION 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 NINGBO DONGHU HYDRAULIC TRANSMISSION Co Ltd filed Critical NINGBO DONGHU HYDRAULIC TRANSMISSION Co Ltd
Priority to CN201710782999.3A priority Critical patent/CN107366658A/en
Publication of CN107366658A publication Critical patent/CN107366658A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20Other details, e.g. assembly with regulating devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J1/00Pistons; Trunk pistons; Plungers
    • F16J1/005Pistons; Trunk pistons; Plungers obtained by assembling several pieces

Abstract

The invention discloses a kind of plunger, include the body and sealing ring of cylinder, in addition to two sleeve pipes, described sleeve pipe connects on the body, region on the body between two described sleeve pipes is provided with sealing ring, and the relative end face of described sleeve pipe is in close contact with the sealing ring.In use, by adjusting the distance between two sleeve pipes, deform upon sealing ring, the distance between sleeve pipe is nearer, and the amount that sealing ring is outwards extruded is bigger, that is, the external diameter of sealing ring just becomes bigger, by this regulative mode, sealing ring can be caused to be in close contact with casing wall, avoid leaking.

Description

A kind of plunger
Technical field
The present invention relates to a kind of hydraulic cylinder, more particularly to a kind of plunger used on hydraulic cylinder.
Background technology
Traditional plunger includes the body of cylinder, and described body sidewall sets groove, sealing ring is set in groove.Tradition Sealing ring be all a ring shape rubber ring, this sealing ring can not be adjusted, if after loading onto, finding local sealing not Good, this also has no idea to adjust, it is therefore necessary to is improved.
The content of the invention
For the deficiencies in the prior art, the invention provides a kind of plunger, and it can adjust the external diameter of sealing ring Size, it is easy to sealing ring to be in close contact with casing wall.
The present invention is achieved through the following technical solutions:A kind of plunger, include the body and sealing ring of cylinder, also wrap Two sleeve pipes are included, described sleeve pipe is connected on the body, and the region on the body between two described sleeve pipes is set There is sealing ring, the relative end face of described sleeve pipe is in close contact with the sealing ring.In use, by between two sleeve pipes of regulation Distance, deform upon sealing ring, the distance between sleeve pipe is nearer, and the amount that sealing ring is outwards extruded is bigger, that is, close The external diameter of seal just becomes bigger, by this regulative mode, sealing ring can be caused to be in close contact with casing wall, avoid leaking.
In above-mentioned technical proposal, it is preferred that described sleeve pipe is threadedly attached on the body.
In above-mentioned technical proposal, it is preferred that the sealing ring is O-ring.
The present invention has the advantages that:It is sealing ring in use, by adjusting the distance between two sleeve pipes The distance between deformation, sleeve pipe is nearer, and the amount that sealing ring is outwards extruded is bigger, and more exactly the external diameter of sealing ring just becomes more Greatly, by this regulative mode, sealing ring can be caused to be in close contact with casing wall, avoid leaking.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings:
Referring to Fig. 1, a kind of plunger, include cylindrical body 1 and O-ring 2, in addition to two sleeve pipes 3, described sleeve pipe 3 connect On the body 1, described sleeve pipe 3 is threadedly attached on the body 1.
Region on the body 1 between two described sleeve pipes 3 is provided with O-ring 2, described sleeve pipe 3 it is relative one End face is in close contact with the O-ring 2.
In use, by adjusting the distance between two sleeve pipes, deform upon O-ring, the distance between sleeve pipe is nearer, The amount that O-ring is outwards extruded is bigger, and more exactly the external diameter of O-ring just becomes bigger, by this regulative mode, can cause O-ring is in close contact with casing wall, avoids leaking.

Claims (3)

1. a kind of plunger, include the body and sealing ring of cylinder, it is characterised in that:Also include two sleeve pipes, described sleeve pipe connects Connect on the body, the region on the body between two described sleeve pipes is provided with sealing ring, and described sleeve pipe is relative End face and the sealing ring be in close contact.
A kind of 2. plunger according to claim 1, it is characterised in that:Described sleeve pipe is threadedly attached in the body On.
A kind of 3. plunger according to claim 1, it is characterised in that:The sealing ring is O-ring.
CN201710782999.3A 2017-09-03 2017-09-03 A kind of plunger Pending CN107366658A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710782999.3A CN107366658A (en) 2017-09-03 2017-09-03 A kind of plunger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710782999.3A CN107366658A (en) 2017-09-03 2017-09-03 A kind of plunger

Publications (1)

Publication Number Publication Date
CN107366658A true CN107366658A (en) 2017-11-21

Family

ID=60311579

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710782999.3A Pending CN107366658A (en) 2017-09-03 2017-09-03 A kind of plunger

Country Status (1)

Country Link
CN (1) CN107366658A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110131237A (en) * 2019-06-17 2019-08-16 宁波东液传动科技有限公司 A kind of piston of hydraulic motor
CN110145433A (en) * 2019-06-17 2019-08-20 宁波东液传动科技有限公司 Piston for hydraulic motor
CN110159757A (en) * 2019-06-17 2019-08-23 宁波东液传动科技有限公司 Built-up piston
CN110219850A (en) * 2019-06-17 2019-09-10 宁波东液传动科技有限公司 A kind of built-up piston

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5118141A (en) * 1989-12-07 1992-06-02 Sanko Kogyo Kabushiki Kaisha Union joint
JPH10252892A (en) * 1997-03-18 1998-09-22 Ishikawa Gasket Kk Sealing structure of metal plate gasket
CN103291911A (en) * 2013-06-25 2013-09-11 郑州大学 Compression type gas pressing nanometer coining self-adaptive pressing piston structure
CN203453465U (en) * 2013-09-11 2014-02-26 林红泽 Sealing nut
CN205047824U (en) * 2015-10-09 2016-02-24 廊坊金润电气有限公司 Female connection plug screw

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5118141A (en) * 1989-12-07 1992-06-02 Sanko Kogyo Kabushiki Kaisha Union joint
JPH10252892A (en) * 1997-03-18 1998-09-22 Ishikawa Gasket Kk Sealing structure of metal plate gasket
CN103291911A (en) * 2013-06-25 2013-09-11 郑州大学 Compression type gas pressing nanometer coining self-adaptive pressing piston structure
CN203453465U (en) * 2013-09-11 2014-02-26 林红泽 Sealing nut
CN205047824U (en) * 2015-10-09 2016-02-24 廊坊金润电气有限公司 Female connection plug screw

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110131237A (en) * 2019-06-17 2019-08-16 宁波东液传动科技有限公司 A kind of piston of hydraulic motor
CN110145433A (en) * 2019-06-17 2019-08-20 宁波东液传动科技有限公司 Piston for hydraulic motor
CN110159757A (en) * 2019-06-17 2019-08-23 宁波东液传动科技有限公司 Built-up piston
CN110219850A (en) * 2019-06-17 2019-09-10 宁波东液传动科技有限公司 A kind of built-up piston

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WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20171121

WD01 Invention patent application deemed withdrawn after publication