CN105201952A - Method for prolonging service lives of cylinder bodies of servo cylinders of continuous pipe rolling mill - Google Patents
Method for prolonging service lives of cylinder bodies of servo cylinders of continuous pipe rolling mill Download PDFInfo
- Publication number
- CN105201952A CN105201952A CN201510558838.7A CN201510558838A CN105201952A CN 105201952 A CN105201952 A CN 105201952A CN 201510558838 A CN201510558838 A CN 201510558838A CN 105201952 A CN105201952 A CN 105201952A
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- China
- Prior art keywords
- servo cylinders
- servocylinder
- pistons
- piston rods
- length
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- Actuator (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention relates to a method for prolonging service lives of cylinder bodies of servo cylinders of a continuous pipe rolling mill and belongs to the field of servo cylinders. According to the method, pistons are arranged in the servo cylinders and connected with piston rods, the length of heads of the piston rods is increased, so that the travel of the pistons arranged inside the cylinder bodies of the servo cylinders is shortened, and the increased length of the heads of the piston rods is equal to the shortened travel of the pistons. The length of the heads of the piston rods is increased, so that the travel of the pistons arranged inside the cylinder bodies of the servo cylinders is shortened, the increased length of the heads of the piston rods is equal to the shortened travel of the pistons, the pistons leave abraded parts of the servo cylinders, that is, the piston rods of the servo cylinders are lengthened by 45 mm, then working sections of the servo cylinders during steel rolling are changed to be located between 55 mm and 95 mm, abrasion surfaces at the original servo cylinder travel of 100 mm-140 mm are avoided, and the service lives of the servo cylinders are prolonged.
Description
Technical field
The present invention relates to a kind of method improving tandem rolling tube machine servocylinder cylinder body working life, belong to servocylinder field.
Background technique
In steel pipe's production, tandem rolling tube machine is the nucleus equipment of hot rolling line, and its Roll Gap Control System has been come by Hydrauservo System, and the actuator of Hydrauservo System is servocylinder.Servocylinder is expensive, and improving servocylinder is a problem in equipment control working life.Two roller continuous mills are generally seven rolling mill compositions, for a wherein rolling mill, the technological design that tandem mill roll gap controls is, the total kilometres of servocylinder are 145mm, during steel rolling, the active section of servocylinder is mainly between 100mm mono-140mm of its stroke, and the impact in this section of stroke during steel rolling is also maximum.Servo-system also has the feature that high frequency trembles, roll 1,000 branched pipes every day, so piston just fluctuates (steel rolling position is between 100mm-140mm) up and down in steel rolling position, so repeatedly, servocylinder cylinder body so will certainly be caused to be rubbed by piston and cylinder body in 100mm-140mm position causes cylinder body to wear and tear, and the production time has been grown, and cylinder body wearing and tearing day by day seriously can cause servocylinder ante-chamber and back cavity string oil, cause servocylinder to lose efficacy, impact is produced.
NeiMenggu BaoGang GangLian Co., Ltd the object of the present invention is to provide a kind of a kind of servocylinder improving servo cylinder body working life that can improve servocylinder cylinder body working life.
technical solution
The present invention includes servocylinder, be provided with piston in servocylinder, piston is connected with piston rod, and by increasing the length of piston rod head, make to be placed in servocylinder cylinder body inner carrier stroke and shorten, the length that piston rod head increases is identical with the stroke that piston shortens.
For shortening piston at the stroke of servocylinder cylinder body, add at piston rod and work-roll chock contact position the pad that thickness-adding is 45mm.
The present invention is by increasing the length of piston rod head, the inner carrier stroke being placed in servocylinder cylinder body is shortened, the length that piston rod head increases is identical with the stroke that piston shortens, piston is made to have left the abrading section of servocylinder, namely by the piston rod of servocylinder is lengthened 45mm, with regard to equaling, active section during servocylinder steel rolling being changed between 55mm mono-95mm like this, having avoided the wear surface of original servocylinder stroke 100mm-140mm, improve the working life of servocylinder.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
1-roll gap 2-roll 3-rolling bearing 4-frame 5-servocylinder 6 compensating cylinder.
Embodiment
The present invention includes servocylinder, be provided with piston in servocylinder, piston is connected with piston rod, and piston rod head end contacts with the bearing support of rolling bearing 3.
During work, a pair roller 2 loads in frame 4, the pulling force of compensating cylinder 6 acts in the bearing support of rolling bearing 3, roll 2 is made to be in equilibrant state, at this moment start to do roll gap 1 according to technological requirement, when specification steel pipe is often planted in rolling, the roll gap of roll has its specified value, servocylinder 5 in frame stretches out the pre-set value promoting roll and roller gap is arrived simultaneously, because inventive piston bar has tapped hole, be that the pad center portion of 45mm has the hole corresponding with stopper rod end thread hole by thickness, by bolt, pad is arranged on piston rod head, the inner carrier stroke being placed in servocylinder cylinder body is made to shorten 45mm, avoid the wear surface of original servocylinder stroke 100mm-140mm, improve the working life of servocylinder.
Pad is also by being weldingly fixed on piston rod head end.The present invention is applicable to the servocylinder using a period of time, and namely the servocylinder of wearing and tearing appears in servo inner surface of cylinder block.
Claims (2)
1. improve the method in tandem rolling tube machine servocylinder cylinder body working life, it is characterized in that, by increasing the length of piston rod head, the inner carrier stroke being placed in servocylinder cylinder body is shortened, and the length that piston rod head increases is identical with the stroke that piston shortens.
2. a kind of method improving tandem rolling tube machine servocylinder cylinder body working life according to claim 1, is characterized in that, adding thickness-adding at piston rod and work-roll chock contact position is that the pad of 45mm is to increase the length of piston rod head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510558838.7A CN105201952A (en) | 2015-09-06 | 2015-09-06 | Method for prolonging service lives of cylinder bodies of servo cylinders of continuous pipe rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510558838.7A CN105201952A (en) | 2015-09-06 | 2015-09-06 | Method for prolonging service lives of cylinder bodies of servo cylinders of continuous pipe rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105201952A true CN105201952A (en) | 2015-12-30 |
Family
ID=54949829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510558838.7A Pending CN105201952A (en) | 2015-09-06 | 2015-09-06 | Method for prolonging service lives of cylinder bodies of servo cylinders of continuous pipe rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105201952A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040089045A1 (en) * | 2001-04-20 | 2004-05-13 | Abbey Nelson D. | Compression assembly for forming rolls |
| CN101767109A (en) * | 2010-01-29 | 2010-07-07 | 太原重工股份有限公司 | Tube rolling mill balanced device |
| CN203906443U (en) * | 2014-04-22 | 2014-10-29 | 西安日新精密机械有限公司 | Stroke adjusting device for hydraulic servo motor |
| CN204262472U (en) * | 2014-10-11 | 2015-04-15 | 淮南北新建材有限公司 | A kind of lightgage steel joist roller mill cut actuator and lightgage steel joist roller mill |
| CN204961453U (en) * | 2015-09-06 | 2016-01-13 | 内蒙古包钢钢联股份有限公司 | Service life of servo -cylinder cylinder body is prolonged servo -cylinder |
-
2015
- 2015-09-06 CN CN201510558838.7A patent/CN105201952A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040089045A1 (en) * | 2001-04-20 | 2004-05-13 | Abbey Nelson D. | Compression assembly for forming rolls |
| CN101767109A (en) * | 2010-01-29 | 2010-07-07 | 太原重工股份有限公司 | Tube rolling mill balanced device |
| CN203906443U (en) * | 2014-04-22 | 2014-10-29 | 西安日新精密机械有限公司 | Stroke adjusting device for hydraulic servo motor |
| CN204262472U (en) * | 2014-10-11 | 2015-04-15 | 淮南北新建材有限公司 | A kind of lightgage steel joist roller mill cut actuator and lightgage steel joist roller mill |
| CN204961453U (en) * | 2015-09-06 | 2016-01-13 | 内蒙古包钢钢联股份有限公司 | Service life of servo -cylinder cylinder body is prolonged servo -cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151230 |
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| WD01 | Invention patent application deemed withdrawn after publication |