CN105772511A - Finish rolling roller changing hydraulic cylinder piston seal on-machine replacing method and device - Google Patents
Finish rolling roller changing hydraulic cylinder piston seal on-machine replacing method and device Download PDFInfo
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- CN105772511A CN105772511A CN201410830230.0A CN201410830230A CN105772511A CN 105772511 A CN105772511 A CN 105772511A CN 201410830230 A CN201410830230 A CN 201410830230A CN 105772511 A CN105772511 A CN 105772511A
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Abstract
The invention provides a finish rolling roller changing hydraulic cylinder piston seal on-machine replacing method and device. The finish rolling roller changing hydraulic cylinder piston seal on-machine replacing device comprises a cylinder rod extension barrel, a long stud, a nut and a pressing plate. The finish rolling roller changing hydraulic cylinder piston seal on-machine replacing method comprises the steps that the long stud is screwed to the exposed cylinder rod head, the cylinder rod extension barrel is arranged on a cylinder rod in a sleeving mode, the pressing plate is arranged on the long stud in a sleeving mode and fixed through the nut; the cylinder rod extension barrel is adjusted to be integrally formed with the cylinder rod, and then the nut is tightly screwed; the joint of the cylinder rod extension barrel and the cylinder rod is polished through fine grit sandpaper and oil stone, attentively, burrs capable of scraping hands cannot exist, and a front seal is prevented from being damaged when the cylinder rod extension barrel is drawn back; and a back cover of a hydraulic cylinder is opened, the cylinder rod is jacked out from front to back slowly, and a piston seal can be replaced when a whole piston is exposed. Compared with the prior art, the finish rolling roller changing hydraulic cylinder piston seal on-machine replacing method and device have the beneficial effects that operation is easy, used time is short, the greatest advantage is that a hydraulic cylinder body does not need to be disassembled, the spare part cost is greatly reduced, the accident processing time is shortened, and the effect after operating is conducted is good.
Description
Technical field
The present invention relates to hot continuous rolling plant equipment, particularly to a kind of method and device changing finish rolling roll change sealing piston of hydraulic cylinder at machine.
Background technology
Finish rolling roll change hydraulic cylinder is a vitals in mm finishing mill unit roll changing system, will use once every about 6 hours, push-and-pull weigh about 10 tons working roll turnover frame.Vibrations, the reason such as aging can cause that finish rolling roll change hydraulic cylinder sealing often damages.In hot continuous rolling production line, finish rolling roll change hydraulic cylinder is positioned at below finish rolling operating board, generally require during replacing and whole hydraulic cylinder is disassembled, and it is changed from carrying out below finish rolling operating board, owing to cylinder body is huge heavy, therefore operating inconvenient, whole disassembly process wastes time and energy, and often produces the activity duration grown very much.To change whole cylinder body simultaneously, too increase maintenance cost.
Summary of the invention
It is an object of the invention to provide a kind of method and device changing finish rolling roll change sealing piston of hydraulic cylinder at machine, the method and device are simple to operate, time less used, maximum advantage is to dismount cylinder body, greatly save spare part expense, decrease the accident treatment time, and respond well after operation.
For achieving the above object, the present invention realizes by the following technical solutions:
For changing the device of finish rolling roll change sealing piston of hydraulic cylinder at machine, including cylinder rod exntension tubs, double end long threaded rod, nut, pressing plate, described double end long threaded rod is screwed into finish rolling roll change hydraulic cylinder club head, cylinder rod exntension tubs are enclosed within cylinder rod head and the outside of double end long threaded rod, pressing plate is buckled in the end of cylinder rod exntension tubs through double end long threaded rod, and pressing plate and cylinder rod exntension tubs are fixed with cylinder rod by nut driving on double end long threaded rod.
Method finish rolling roll change sealing piston of hydraulic cylinder being replaced for the device changing finish rolling roll change sealing piston of hydraulic cylinder at machine is adopted to comprise the steps:
1) pull down finish rolling roll change hydraulic cylinder cylinder head with inner hexagon spanner, be moved into cylinder body side；
2) position detecting switch of cylinder rod is pulled down, and be placed on one side；
3) double end long threaded rod is screwed into the cylinder rod head exposed；
4) cylinder rod exntension tubs are enclosed within double end long threaded rod and cylinder rod head, pressing plate are enclosed within double end long threaded rod, by nut driving to double end long threaded rod；
5) adjust cylinder rod exntension tubs so that it is be integrally forming with cylinder rod, now by nut screwing clamping, push down cylinder rod exntension tubs by pressing plate, make cylinder rod exntension tubs and cylinder rod fix and be connected；
6) open the bonnet of finish rolling roll change hydraulic cylinder, and with calico, the fluid of outflow is cleaned out；
7) by cylinder rod exntension tubs, cylinder rod is slowly ejected from front to back with jack, chock is placed under piston, it is prevented that piston drops suddenly and cylinder barrel damaged in collision surface；
8), after piston is completely exposed, adjusts chock position and height, make piston seal be completely exposed；
9) piston seal damaged with tool changings such as screwdrivers, now notes the cleaning keeping working environment around；
10) from back to front piston rod is headed into cylinder intracavity with jack, notice when observation heads into, whether sealing is intact；
11) clean the bonnet of finish rolling roll change hydraulic cylinder with calico and recover its position；
12) the double end long threaded rod of cylinder rod head, nut, pressing plate and cylinder rod exntension tubs are pulled down；
13) cylinder rod position detecting switch is recovered；
14) cylinder head of finish rolling roll change hydraulic cylinder is recovered.
Compared with prior art, the invention has the beneficial effects as follows:
A kind of method at machine replacing finish rolling roll change sealing piston of hydraulic cylinder and device, the method and device are simple to operate, time less used, maximum advantage is to dismount cylinder body, greatly save spare part expense, decrease the accident treatment time, and respond well after operation.
Accompanying drawing explanation
Fig. 1 is the perspective view of the finish rolling roll change hydraulic cylinder after cylinder head and cylinder rod position detecting switch being pulled down.
Perspective view when Fig. 2 is that double end long threaded rod is screwed to cylinder rod head.
Perspective view when Fig. 3 is that cylinder rod exntension tubs are enclosed within cylinder rod head.
Pressing plate is enclosed within double end long threaded rod by Fig. 4, and with nut screwing clamping by cylinder rod exntension tubs and the securing perspective view of cylinder rod head.
Fig. 5 is the perspective view opening hydraulic cylinder bonnet.
Perspective view when Fig. 6 is cylinder rod slowly to be ejected and exposed piston from front to back and seal.
Fig. 7 is after changing sealing, the perspective view after cylinder rod is resetted and taken off by cylinder rod exntension tubs.
Fig. 8 is the planar structure sectional view of Fig. 4.
Fig. 9 is the left view of Fig. 8.
Figure 10 is the planar structure sectional view of Fig. 6.
In figure: 1. finish rolling roll change hydraulic cylinder body .2. cylinder rod .3. cylinder rod exntension tubs .4. double end long threaded rod .5. nut .6. pressing plate 7. piston seal .8. bonnet.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is described in detail, it should be noted that the enforcement of the present invention is not limited to following embodiment.
See Fig. 8, Fig. 9, Figure 10, for changing the device of finish rolling roll change sealing piston of hydraulic cylinder at machine, including cylinder rod exntension tubs 3, double end long threaded rod 4, nut 5, pressing plate 6, double end long threaded rod 4 is screwed into finish rolling roll change hydraulic cylinder cylinder rod 2 head, cylinder rod exntension tubs 3 are enclosed within cylinder rod 2 head and the outside of double end long threaded rod 4, pressing plate 6 is buckled in the end of cylinder rod exntension tubs 3 through double end long threaded rod 4, and nut 5 is screwed on double end long threaded rod 4 and pressing plate 6 and cylinder rod exntension tubs 3 is fixed with cylinder rod 2.
See Fig. 1-Fig. 7, adopt method finish rolling roll change sealing piston of hydraulic cylinder being replaced for the device changing finish rolling roll change sealing piston of hydraulic cylinder at machine to comprise the steps:
1) pull down finish rolling roll change hydraulic cylinder cylinder head with inner hexagon spanner, be moved into cylinder body side；
2) position detecting switch of cylinder rod is pulled down, and be placed on one side；
3) double end long threaded rod 4 is screwed into cylinder rod 2 head exposed；
4) cylinder rod exntension tubs 3 are enclosed within double end long threaded rod 4 and cylinder rod 2 head, pressing plate 6 are enclosed within double end long threaded rod 4, nut 5 is screwed on double end long threaded rod 4；
5) adjust cylinder rod exntension tubs 3 so that it is be integrally forming with cylinder rod 2, now tightened by nut 5, push down cylinder rod exntension tubs 3 by pressing plate 6, make cylinder rod exntension tubs 3 fix with cylinder rod 2 and be connected；
With fine sandpaper, oilstone polishing cylinder rod exntension tubs 3 and cylinder rod 2 junction, note there is not the burr scraping hands, it is prevented that during retraction, damage the front sealing of finish rolling roll change hydraulic cylinder；
6) open the bonnet 8 of finish rolling roll change hydraulic cylinder, and with calico, the fluid of outflow is cleaned out；
7) by cylinder rod exntension tubs 3, cylinder rod 2 is slowly ejected from front to back with jack, chock is placed under piston, it is prevented that piston drops suddenly and cylinder barrel damaged in collision surface；
8), after piston is completely exposed, adjusts chock position and height, make piston seal 7 be completely exposed；
9) piston seal 7 damaged with tool changings such as screwdrivers, now notes the cleaning keeping working environment around；
10) from back to front piston rod is headed into cylinder intracavity with jack, notice when observation heads into, whether sealing is intact；
11) clean the bonnet 8 of finish rolling roll change hydraulic cylinder with calico and recover its position；
12) the double end long threaded rod 4 of cylinder rod 2 head, nut 5, pressing plate 6 and cylinder rod exntension tubs 3 are pulled down；
13) cylinder rod position detecting switch is recovered；
14) cylinder head of finish rolling roll change hydraulic cylinder is recovered.
Through practice to 1700 Hot Line mm finishing mill unit, the present invention effectively achieve finish rolling roll change hydraulic cylinder sealing at machine quick-replaceable.Through tracking test, changing the hydraulic cylinder works after sealing normal, sealing effectiveness is good.
Claims (2)
1. for changing the device of finish rolling roll change sealing piston of hydraulic cylinder at machine, it is characterized in that, including cylinder rod exntension tubs, double end long threaded rod, nut, pressing plate, described double end long threaded rod is screwed into finish rolling roll change hydraulic cylinder club head, cylinder rod exntension tubs are enclosed within cylinder rod head and the outside of double end long threaded rod, pressing plate is buckled in the end of cylinder rod exntension tubs through double end long threaded rod, and pressing plate and cylinder rod exntension tubs are fixed with cylinder rod by nut driving on double end long threaded rod.
2. adopt method finish rolling roll change sealing piston of hydraulic cylinder being replaced for the device changing finish rolling roll change sealing piston of hydraulic cylinder at machine as claimed in claim 1, it is characterised in that comprise the steps:
1) pull down finish rolling roll change hydraulic cylinder cylinder head with inner hexagon spanner, be moved into cylinder body side；
2) position detecting switch of cylinder rod is pulled down, and be placed on one side；
3) double end long threaded rod is screwed into the cylinder rod head exposed；
4) cylinder rod exntension tubs are enclosed within double end long threaded rod and cylinder rod head, pressing plate are enclosed within double end long threaded rod, by nut driving to double end long threaded rod；
5) adjust cylinder rod exntension tubs so that it is be integrally forming with cylinder rod, now by nut screwing clamping, push down cylinder rod exntension tubs by pressing plate, make cylinder rod exntension tubs and cylinder rod fix and be connected；
6) open the bonnet of finish rolling roll change hydraulic cylinder, and with calico, the fluid of outflow is cleaned out；
7) by cylinder rod exntension tubs, cylinder rod is slowly ejected from front to back with jack, chock is placed under piston, it is prevented that piston drops suddenly and cylinder barrel damaged in collision surface；
8), after piston is completely exposed, adjusts chock position and height, make piston seal be completely exposed；
9) piston seal damaged with tool changings such as screwdrivers, now notes the cleaning keeping working environment around；
10) from back to front piston rod is headed into cylinder intracavity with jack, notice when observation heads into, whether sealing is intact；
11) clean the bonnet of finish rolling roll change hydraulic cylinder with calico and recover its position；
12) the double end long threaded rod of cylinder rod head, nut, pressing plate and cylinder rod exntension tubs are pulled down；
13) cylinder rod position detecting switch is recovered；
14) cylinder head of finish rolling roll change hydraulic cylinder is recovered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830230.0A CN105772511B (en) | 2014-12-26 | 2014-12-26 | A kind of method and device that finish rolling roll change sealing piston of hydraulic cylinder is changed in machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830230.0A CN105772511B (en) | 2014-12-26 | 2014-12-26 | A kind of method and device that finish rolling roll change sealing piston of hydraulic cylinder is changed in machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105772511A true CN105772511A (en) | 2016-07-20 |
| CN105772511B CN105772511B (en) | 2018-01-05 |
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| CN201410830230.0A Active CN105772511B (en) | 2014-12-26 | 2014-12-26 | A kind of method and device that finish rolling roll change sealing piston of hydraulic cylinder is changed in machine |
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| CN (1) | CN105772511B (en) |
Citations (9)
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|---|---|---|---|---|
| US5285568A (en) * | 1992-05-20 | 1994-02-15 | Goetze Ag | Apparatus for the automatic installation of expander rings into split piston rings |
| CN201103583Y (en) * | 2007-09-05 | 2008-08-20 | 攀枝花新钢钒股份有限公司 | Lug oil cylinder |
| CN202007806U (en) * | 2011-03-16 | 2011-10-12 | 宝山钢铁股份有限公司 | Device for quickly dismantling oil cylinder piston rod |
| CN102434672A (en) * | 2011-10-31 | 2012-05-02 | 湖南特力液压有限公司 | Hydraulic cylinder sealing structure |
| KR20120110582A (en) * | 2011-03-30 | 2012-10-10 | 현대제철 주식회사 | Fixing apparatus for press roll assembly |
| CN102720723A (en) * | 2012-07-13 | 2012-10-10 | 常州液压成套设备厂有限公司 | Hydraulic cylinder with separated cylinder end and easily replaced sealing member |
| CN202517433U (en) * | 2012-04-05 | 2012-11-07 | 马钢(集团)控股有限公司 | Tool for replacing cold shear sealing ring |
| CN103277511A (en) * | 2013-05-09 | 2013-09-04 | 宁波恒力液压股份有限公司 | Hydraulic machine plunger type cylinder with split-type sealing device and replacement method of sealing assembly |
| CN204448826U (en) * | 2014-12-26 | 2015-07-08 | 鞍钢股份有限公司 | A kind of device changing finish rolling roll change sealing piston of hydraulic cylinder at machine |
-
2014
- 2014-12-26 CN CN201410830230.0A patent/CN105772511B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5285568A (en) * | 1992-05-20 | 1994-02-15 | Goetze Ag | Apparatus for the automatic installation of expander rings into split piston rings |
| CN201103583Y (en) * | 2007-09-05 | 2008-08-20 | 攀枝花新钢钒股份有限公司 | Lug oil cylinder |
| CN202007806U (en) * | 2011-03-16 | 2011-10-12 | 宝山钢铁股份有限公司 | Device for quickly dismantling oil cylinder piston rod |
| KR20120110582A (en) * | 2011-03-30 | 2012-10-10 | 현대제철 주식회사 | Fixing apparatus for press roll assembly |
| CN102434672A (en) * | 2011-10-31 | 2012-05-02 | 湖南特力液压有限公司 | Hydraulic cylinder sealing structure |
| CN202517433U (en) * | 2012-04-05 | 2012-11-07 | 马钢(集团)控股有限公司 | Tool for replacing cold shear sealing ring |
| CN102720723A (en) * | 2012-07-13 | 2012-10-10 | 常州液压成套设备厂有限公司 | Hydraulic cylinder with separated cylinder end and easily replaced sealing member |
| CN103277511A (en) * | 2013-05-09 | 2013-09-04 | 宁波恒力液压股份有限公司 | Hydraulic machine plunger type cylinder with split-type sealing device and replacement method of sealing assembly |
| CN204448826U (en) * | 2014-12-26 | 2015-07-08 | 鞍钢股份有限公司 | A kind of device changing finish rolling roll change sealing piston of hydraulic cylinder at machine |
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| Publication number | Publication date |
|---|---|
| CN105772511B (en) | 2018-01-05 |
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