CN100427274C - Pulling unit - Google Patents
Pulling unit Download PDFInfo
- Publication number
- CN100427274C CN100427274C CNB2007100133520A CN200710013352A CN100427274C CN 100427274 C CN100427274 C CN 100427274C CN B2007100133520 A CNB2007100133520 A CN B2007100133520A CN 200710013352 A CN200710013352 A CN 200710013352A CN 100427274 C CN100427274 C CN 100427274C
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- CN
- China
- Prior art keywords
- valve seat
- contained
- seat insert
- expansion set
- pulling unit
- 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.)
- Expired - Fee Related
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- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Drilling And Boring (AREA)
Abstract
The pulling unit has one expanding sleeve with outer surface fitting the valve seat and inner surface fitting one conic spindle and cut into three equal parts connected through the springs in the slots, one small pressure plate mounted to one end of the expanding sleeve, one screw sleeve screwed to the stud of the conic spindle, one large pressure plate mounted on the surface of cylinder cover, and one nut with two welded handles mounted on the screw sleeve. After the expanding sleeve is mounted inside the conic spindle and inside the hole of the valve seat and the screw sleeve is turned to press the small pressure plate and make the outer surface of the expanding sleeve contact with the inner surface of the valve seat, the valve seat may be disassembled easily. The pulling unit is simple, convenient and reliable.
Description
Affiliated technical field
The present invention relates to a kind of mechanical provision for disengagement, especially pulling unit.
Background technology
Cover parts is common machine components, and it is contained in the position such as friction, sealing of parts such as casing, support, cylinder cap.By changing the service life that cover plays parts such as prolonging casing, support, cylinder cap.The cover that is contained in the part through hole can eject it with the end of simple tools from the hole, and dismounting is than being easier to.And the hole of installation sleeve is when obstructed, and grip is pulled down just cumbersome from the hole.For example the valve seat insert of 16V240 cylinder head just is mounted in the valve seat orifice on the face of combustion chamber, and the magnitude of interference reaches 0.06~0.08 millimeter.Cylinder head is costly part, and valve seat insert will more renew when may wear to the obsolete limit, and the structure of cylinder head can't eject it with instrument when making the dismounting valve seat insert.Common way is: 1, cylinder head is contained on the milling machine and with slotting cutter valve seat insert is milled disconnected the taking-up.Because the hardness of valve seat insert is higher, the milling difficulty will be milled when disconnected very carefully at valve seat insert, once not noticing that milling cutter mills on the cylinder head cylinder head has been scrapped.2, the reinforcing bar of burn-oning on valve seat insert pulls it.Welding also can cause cylinder head to scrap, because that the magnitude of interference of valve seat insert and cylinder head is big is also difficult when drawing valve seat insert with reinforcing bar.Yi Shang method is all undesirable in a word.
Summary of the invention
Valve seat insert is pulled down from cylinder head for convenience designed a kind of pulling unit, valve seat insert pulled down under the effect of nut with the expansion set drive valve seat insert of instrument.
The technical solution adopted for the present invention to solve the technical problems is: design a kind of pulling unit, be made up of big platen, spring, little platen, nut, handle, swivel nut, tapering mandrel, expansion set.Expansion set is consistent with valve seat insert endoporus and end opening chamfer surface by outer surface, inner surface and the consistent cover of tapering mandrel outer surface of cone, with metal saw by 3 five equilibriums mill out constitute, link together by the spring that is contained in their common grooves; Expansion set is contained in the endoporus of valve seat insert after being contained in the small end of tapering mandrel, little platen is contained on the expansion set end face, swivel nut is contained in its internal thread on the double-screw bolt of tapering mandrel, compresses little platen by rotary threaded sleeve and makes the outer surface of expansion set and the endoporus and the end opening chamfer surface of valve seat insert fit tight; Big platen is contained on the face of cylinder head, and nut is contained on the swivel nut, and two handles are welded on the both sides of nut respectively.
Spring is an O type rubber seal.Corresponding outer six sides surface has all been designed in the double-screw bolt end of tapering mandrel and the upper end of swivel nut.
The invention has the beneficial effects as follows, can be under the situation of not damaging valve seat insert and cylinder head, valve seat insert is pulled down easily.Interior cover extracting tool is simple in structure, easy to use and reliable.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a front view of the present invention.
Fig. 2 is the cutaway view at Figure 1A-A place.
Fig. 3 be Figure 1B to view.
1. cylinder head among the figure, 2. big platen, 3. valve seat insert, 4. spring, 5. little platen, 6. nut, 7. handle, 8. swivel nut, 9. tapering mandrel, 10. expansion set.
The specific embodiment
Accompanying drawing is the pulling unit by the valve seat insert design of dismounting 16V240 cylinder cover for diesel engine.By the design of common mechanical part, all there is chamfering at valve seat insert endoporus two ends, and also there is chamfering the bottom surface, hole that contacts with valve seat insert.Thereby the design principle of valve seat insert extracting tool is exactly to utilize the inner surface of the expansion set tensioner valve seat insert of outer radius variableization that valve seat insert is taken out.With reference to accompanying drawing, chamfer surface was consistent under expansion set 10 was reached by outer surface and valve seat insert 3 endoporus, and the metal saw of applying mechanically that inner surface is consistent with tapering mandrel 9 outer surface of cone mills out by 3 five equilibriums, links together by the spring 4 that is contained in their common grooves.Spring 4 can be used the extension spring of steel wire circle, the O type rubber seal that also available size is suitable.What the valve seat insert extracting tool was used is exactly the O type rubber seal of using on the cylinder head assembly parts.When the size of milling cutter otch should be able to satisfy expansion set 10 and is contained in tapering mandrel 9 cone small ends, its external diameter corresponding with bottom, valve seat insert hole chamfering can be put in the endoporus of valve seat insert 3.Expansion set 10 is contained in the endoporus of valve seat insert 3 after being contained in the small end of tapering mandrel 9, and jut corresponding with bottom, valve seat insert hole chamfering on the expansion set 10 aligns with valve seat orifice bottom chamfering.For the expansion set 10 that is contained in the valve seat insert 3 is adjacent to valve seat endoporus and chamfering, little platen 5 is contained on expansion set 10 end faces, swivel nut 8 is contained on the double-screw bolt of tapering mandrel 9, compresses little platen 5 by rotary threaded sleeve 8 and makes the external diameter increase of expansion set 10 and the bore area tensioner of valve seat insert.Big platen 2 is contained on the face of cylinder head 1, and nut 6 is contained on the swivel nut 8, valve seat insert 3 is pulled out from the hole of cylinder head 1 in expansion set 10 tensioner valve seat inserts 3 by handle 7 rotating nuts 6 that are welded on nut 6 both sides.Then, backward rotation is contained in the swivel nut 8 on the tapering mandrel 9, unclamps little platen 5, and expansion set 10 is moved to tapering mandrel 9 small ends, and expansion set 10 cylindricals shrink, and just can take off valve seat insert 3 from expansion set 10.For this reason, corresponding outer six sides surface has all been designed in the upper end of the double-screw bolt end of tapering mandrel 9 and swivel nut 8.Cover for the blind hole of packing into generally all can be designed chamfering, so that pull it with pulling unit.
The pulling unit that is used for valve seat insert uses through long-term, and is convenient and reliable, saves man-hour than former method, guarantees that cylinder head is not damaged, and obtains favorable economic benefit.
Claims (4)
1, a kind of pulling unit, form by big platen, spring, little platen, nut, handle, swivel nut, tapering mandrel, expansion set, it is characterized in that: expansion set is consistent with valve seat insert endoporus and end opening chamfer surface by outer surface, inner surface and the consistent cover of tapering mandrel outer surface of cone, with metal saw by 3 five equilibriums mill out constitute, link together by the spring that is contained in their common grooves; Expansion set is contained in the endoporus of valve seat insert after being contained in the small end of tapering mandrel, little platen is contained on the expansion set end face, swivel nut is contained in its internal thread on the double-screw bolt of tapering mandrel, compresses little platen by rotary threaded sleeve and makes the outer surface of expansion set and the endoporus and the end opening chamfer surface of valve seat insert fit tight; Big platen is contained on the face of cylinder head, and nut is contained on the swivel nut, and two handles are welded on the both sides of nut respectively.
2, pulling unit according to claim 1 is characterized in that: spring can be changed to O type rubber seal.
3, pulling unit according to claim 1 is characterized in that: the double-screw bolt end design of tapering mandrel has corresponding outer six sides surface.
4, pulling unit according to claim 1 is characterized in that: the upper end design of swivel nut has corresponding outer six sides surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2007100133520A CN100427274C (en) | 2007-02-25 | 2007-02-25 | Pulling unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2007100133520A CN100427274C (en) | 2007-02-25 | 2007-02-25 | Pulling unit |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101020306A CN101020306A (en) | 2007-08-22 |
CN100427274C true CN100427274C (en) | 2008-10-22 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2007100133520A Expired - Fee Related CN100427274C (en) | 2007-02-25 | 2007-02-25 | Pulling unit |
Country Status (1)
Country | Link |
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CN (1) | CN100427274C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101973017A (en) * | 2010-09-30 | 2011-02-16 | 无锡英特帕普威孚液压有限责任公司 | Automatic mounting device of retaining ring for hydraulic lifting valve shaft |
CN103522249A (en) * | 2012-07-06 | 2014-01-22 | 哈尔滨飞机工业集团有限责任公司 | Disassembling tool of shaft liner |
Families Citing this family (12)
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CN201841518U (en) * | 2010-08-06 | 2011-05-25 | 长春轨道客车股份有限公司 | Nondestructive dismounting device for side rolling resistant torsion bar of light rail vehicle |
CN102085650A (en) * | 2011-01-27 | 2011-06-08 | 东风朝阳柴油机有限责任公司 | Appliance special for dismounting valve seat ring of diesel engine cylinder cover |
CN106625393B (en) * | 2016-11-16 | 2023-03-10 | 广州飞机维修工程有限公司 | Shaft pulling device and shaft pulling method for pulling guide shaft of aircraft anti-icing valve |
CN110653749B (en) * | 2018-06-28 | 2021-03-12 | 南京梅山冶金发展有限公司 | Be applied to cascaded dismounting device of cartridge valve |
CN109176389B (en) * | 2018-09-18 | 2024-04-16 | 上海天永智能装备股份有限公司 | Self-locking type puller |
CN109759988A (en) * | 2018-12-26 | 2019-05-17 | 河南中烟工业有限责任公司 | A kind of plunger pump galand lifting tool |
CN111434464B (en) * | 2019-01-15 | 2021-12-17 | 宝山钢铁股份有限公司 | Nondestructive dismounting device and method for valve core of air passage of gear cylinder of truck |
CN112847243A (en) * | 2019-11-28 | 2021-05-28 | 北京福田康明斯发动机有限公司 | Dismounting device of annular work piece |
CN111015585A (en) * | 2019-12-23 | 2020-04-17 | 攀钢集团西昌钢钒有限公司 | Plug-in valve plug-in components extractor |
CN111230809B (en) * | 2020-03-20 | 2023-07-07 | 成都乘风阀门有限责任公司 | Valve seat mounting tool and method for flat gate valve |
CN111993349A (en) * | 2020-08-24 | 2020-11-27 | 中国石油天然气集团有限公司 | Pneumatic impact seat pulling device and using method thereof |
CN114227615B (en) * | 2022-02-25 | 2022-04-26 | 成都成高阀门有限公司 | Quick assembly tool for valve seat support |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4724608A (en) * | 1986-11-20 | 1988-02-16 | Parrott Ronald J W | Extractor tool for bearings, bushings and the like |
CN1104951A (en) * | 1993-04-19 | 1995-07-12 | 凌帆 | Adjustable combined multifunction bearing drawing and disassembling device |
US5533245A (en) * | 1994-10-18 | 1996-07-09 | Stanton; Eddie | Releasable valve seat removal tool |
CN2403549Y (en) * | 1999-08-13 | 2000-11-01 | 余世界 | Air valve race pulling device |
CN2504028Y (en) * | 2001-10-24 | 2002-08-07 | 程漠贵 | Piston puller |
CN2573166Y (en) * | 2002-09-30 | 2003-09-17 | 大庆油田有限责任公司 | Bearing outer ring detacher |
CN2749630Y (en) * | 2004-06-25 | 2006-01-04 | 神华集团有限责任公司 | Bearing outer ring removing device |
CN2843776Y (en) * | 2005-11-09 | 2006-12-06 | 青岛港(集团)有限公司 | The sheath stripping attachment |
CN201058422Y (en) * | 2007-02-25 | 2008-05-14 | 刘之增 | Liner detaching tool |
-
2007
- 2007-02-25 CN CNB2007100133520A patent/CN100427274C/en not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4724608A (en) * | 1986-11-20 | 1988-02-16 | Parrott Ronald J W | Extractor tool for bearings, bushings and the like |
CN1104951A (en) * | 1993-04-19 | 1995-07-12 | 凌帆 | Adjustable combined multifunction bearing drawing and disassembling device |
US5533245A (en) * | 1994-10-18 | 1996-07-09 | Stanton; Eddie | Releasable valve seat removal tool |
CN2403549Y (en) * | 1999-08-13 | 2000-11-01 | 余世界 | Air valve race pulling device |
CN2504028Y (en) * | 2001-10-24 | 2002-08-07 | 程漠贵 | Piston puller |
CN2573166Y (en) * | 2002-09-30 | 2003-09-17 | 大庆油田有限责任公司 | Bearing outer ring detacher |
CN2749630Y (en) * | 2004-06-25 | 2006-01-04 | 神华集团有限责任公司 | Bearing outer ring removing device |
CN2843776Y (en) * | 2005-11-09 | 2006-12-06 | 青岛港(集团)有限公司 | The sheath stripping attachment |
CN201058422Y (en) * | 2007-02-25 | 2008-05-14 | 刘之增 | Liner detaching tool |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101973017A (en) * | 2010-09-30 | 2011-02-16 | 无锡英特帕普威孚液压有限责任公司 | Automatic mounting device of retaining ring for hydraulic lifting valve shaft |
CN101973017B (en) * | 2010-09-30 | 2012-03-07 | 无锡英特帕普威孚液压有限责任公司 | Automatic mounting device of retaining ring for hydraulic lifting valve shaft |
CN103522249A (en) * | 2012-07-06 | 2014-01-22 | 哈尔滨飞机工业集团有限责任公司 | Disassembling tool of shaft liner |
Also Published As
Publication number | Publication date |
---|---|
CN101020306A (en) | 2007-08-22 |
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 |