CN203272325U - Anti-rotation structure of rolling mill servo cylinder - Google Patents
Anti-rotation structure of rolling mill servo cylinder Download PDFInfo
- Publication number
- CN203272325U CN203272325U CN 201320269306 CN201320269306U CN203272325U CN 203272325 U CN203272325 U CN 203272325U CN 201320269306 CN201320269306 CN 201320269306 CN 201320269306 U CN201320269306 U CN 201320269306U CN 203272325 U CN203272325 U CN 203272325U
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- rotation
- cylinder
- servocylinder
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- stop pin
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model provides an anti-rotation structure of a rolling mill servo cylinder. The anti-rotation structure is arranged among a cylinder barrel of the servo cylinder, a cylinder rod piston and oil openings. An anti-rotation pin is embedded in the cylinder barrel. A hole is formed in the cylinder rod piston correspondingly. The pin is in clearance fit with the hole. The position of the anti-rotation pin is vertical to the direction of the two oil openings. The anti-rotation structure has the advantages that the anti-rotation function of the servo cylinder is completely achieved, equipment precision is improved, stability of a servo pressing system is guaranteed, control precision of the wall thickness of a steel tube is improved, production technological requirements are met, after the anti-rotation function is recovered, service life of the servo cylinder is prolonged, failure time is reduced, and cost of spare parts is saved.
Description
Technical field
The utility model relates to a kind of rotation prevention structure of milling train servocylinder.
Background technique
Servocylinder is in rolling process, control to thickness of steel pipe plays vital effect, due to the plane contact to servocylinder cylinder head and cylinder bar surface of contact, changed present cambered surface contact into, and often roll a steel servocylinder and will move once, so servocylinder cylinder bar be easy to relatively rotate, after rotation, just can not guarantee the precision of servo press down system, will certainly impact thickness of steel pipe.Servocylinder rotates, can oil leakage phenomenon will often occur like this to the long-living abrasion deformation of inner sealing, servocylinder of on-the-spot replacing was wanted about 15 hours, the cost of a servocylinder will 250,000 yuan of left and right, so not only affect rhythm of production but also increase spare parts cost.
The servocylinder anti-rotation adopted in the past is that the cylinder head place adds the anti-rotation cover, anti-rotation covers in the servocylinder telescopic process and slides on the stop pin on cylinder barrel, thereby realize anti-rotation, because site environment is more abominable, foul is more, in servocylinder perseveration process, the anti-rotation cover is easy to distortion, and causing at last can not anti-rotation.So just bring a lot of drawbacks to production, can not satisfy manufacturing technique requirent.
Summary of the invention
In order to guarantee that servocylinder is in rolling process, the cylinder bar does not rotate, the purpose of this utility model is to provide a kind of rotation prevention structure of milling train servocylinder, transform from cylinder interior, thereby thoroughly realize the anti-rotating function of servocylinder, the wearing and tearing that can significantly reduce cylinder interior sealing and guiding device extend the working life of servocylinder.
For achieving the above object, the technical solution adopted in the utility model is to provide a kind of rotation prevention structure of milling train servocylinder, this rotation prevention structure is arranged between cylinder barrel, cylinder bar piston and the hydraulic fluid port of servocylinder, wherein: inlay a stop pin in cylinder barrel inside, correspondence is punched on cylinder bar piston, pin adopts Spielpassung with the hole, the position of stop pin will with the perpendicular direction of two hydraulic fluid ports.
Effect of the present utility model is that the rotation prevention structure of this milling train servocylinder is thoroughly realized the servocylinder anti-rotating function, has improved equipment precision, has guaranteed the stability of servo press down system, has improved the control accuracy to thickness of steel pipe, has satisfied manufacturing technique requirent.After anti-rotating function recovers, also extend the working life of servocylinder, reduced fault time, saved spare parts cost.
Description of drawings
Fig. 1 is the rotation prevention structure dress erection drawing of milling train servocylinder of the present utility model;
Fig. 2 is cylinder structure plan view of the present utility model;
Fig. 3 is cylinder structure right elevation of the present utility model;
Fig. 4 cylinder bar of the present utility model and piston structure plan view;
Fig. 5 cylinder bar of the present utility model and piston structure right elevation.
In figure:
1, stop pin 2, cylinder barrel 3, cylinder bar 4, cylinder bar piston
5, oil circuit 6, hydraulic fluid port 7, anti-rotation pin-and-hole
Embodiment
By reference to the accompanying drawings the rotation prevention structure of milling train servocylinder of the present utility model is illustrated.
The design philosophy of the rotation prevention structure of milling train servocylinder of the present utility model is: according to the internal structure of servocylinder, the boundary dimension of cylinder barrel and cylinder bar piston, the material at each position, force analysis during steel rolling, final decision is inlayed a stop pin 1 on cylinder barrel, correspondence is beaten the anti-rotation pin-and-hole on cylinder bar piston 4; The position of stop pin 1 will with the perpendicular direction of two hydraulic fluid ports 6 of oil circuit 5, servocylinder is in movement process like this, inner stop pin just slides in anti-rotating hole, thereby realizes anti-rotation.
The rotation prevention structure of milling train servocylinder of the present utility model is arranged between cylinder barrel, cylinder bar piston and the hydraulic fluid port of servocylinder, inlays a stop pin 1 on described cylinder barrel 2, and the diameter of stop pin 1 is 60mm.Stop pin 1 is located at the position with two hydraulic fluid port 6 line middle point vertical of cylinder barrel 2, and the cylinder bar piston 4 corresponding with stop pin 1 is provided with anti-rotation pin-and-hole 7, and stop pin 1 be Spielpassung with anti-rotation pin-and-hole 7, and the matching gap of stop pin 1 and anti-rotation pin-and-hole 7 is 3mm.
First stop pin 1 is set on cylinder barrel 2 before the rotation prevention structure assembling of milling train servocylinder of the present utility model and fixes, then assemble cylinder bar 3, guarantee that on stop pin 1 and cylinder bar piston 4, the anti-rotation pin-and-hole is worked good, at last other component of servocylinder are being assembled.
Perishable, yielding due to original anti-rotation device, the location inaccurate, set about from servocylinder inside, first the parameters of servocylinder is analyzed, in conjunction with on-the-spot applying working condition, design drawing, after discussing, research in continuous improvement, after unified suggestion, require producer first a servocylinder to be transformed.Will move once owing to often rolling a steel servocylinder, after reaching the standard grade and use in the rotation prevention structure scene of milling train servocylinder of the present utility model, the servocylinder cylinder head contacts with cylinder bar cambered surface and does not rotate, the accurate positioning of servocylinder cylinder bar, the servocylinder amount of seal wear is reduced, reached the expection purpose.
Claims (2)
1. the rotation prevention structure of a milling train servocylinder, this rotation prevention structure is arranged between cylinder barrel, cylinder bar piston and the hydraulic fluid port of servocylinder, it is characterized in that: inlay a stop pin (1) on described cylinder barrel (2), stop pin (1) is located at the position with two hydraulic fluid ports (6) line middle point vertical of cylinder barrel (2), the cylinder bar piston (4) corresponding with stop pin (1) is provided with anti-rotation pin-and-hole (7), and stop pin (1) is Spielpassung with anti-rotation pin-and-hole (7).
2. the rotation prevention structure of milling train servocylinder according to claim 1, it is characterized in that: the diameter of described stop pin (1) is 60mm, stop pin (1) is 3mm with the matching gap of anti-rotation pin-and-hole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320269306 CN203272325U (en) | 2013-05-17 | 2013-05-17 | Anti-rotation structure of rolling mill servo cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320269306 CN203272325U (en) | 2013-05-17 | 2013-05-17 | Anti-rotation structure of rolling mill servo cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203272325U true CN203272325U (en) | 2013-11-06 |
Family
ID=49502747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320269306 Expired - Lifetime CN203272325U (en) | 2013-05-17 | 2013-05-17 | Anti-rotation structure of rolling mill servo cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203272325U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557200A (en) * | 2013-11-22 | 2014-02-05 | 徐州徐工液压件有限公司 | Hydraulic cylinder with rotation resistant mechanism |
| CN109713840A (en) * | 2019-01-23 | 2019-05-03 | 济南中正金码科技有限公司 | A kind of servo cylinder pressure cylinder rod anti-rotation device |
| CN110814043A (en) * | 2019-11-13 | 2020-02-21 | 天津市中重科技工程有限公司 | Self-positioning pressure head structure of vertical roller mill |
-
2013
- 2013-05-17 CN CN 201320269306 patent/CN203272325U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557200A (en) * | 2013-11-22 | 2014-02-05 | 徐州徐工液压件有限公司 | Hydraulic cylinder with rotation resistant mechanism |
| CN103557200B (en) * | 2013-11-22 | 2016-01-06 | 徐州徐工液压件有限公司 | A kind of oil hydraulic cylinder with anti-rotation mechanism |
| CN109713840A (en) * | 2019-01-23 | 2019-05-03 | 济南中正金码科技有限公司 | A kind of servo cylinder pressure cylinder rod anti-rotation device |
| CN109713840B (en) * | 2019-01-23 | 2020-04-10 | 济南中正金码科技有限公司 | Servo pressure cylinder rod rotation preventing device |
| CN110814043A (en) * | 2019-11-13 | 2020-02-21 | 天津市中重科技工程有限公司 | Self-positioning pressure head structure of vertical roller mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190627 Address after: No. 396 Jintang Highway, Dongli District, Tianjin 300301 Patentee after: Tianjin Steel Tube Manufacturing Co.,Ltd. Address before: No. 396 Jintang Highway, Dongli District, Tianjin 300301 Patentee before: TIANJIN PIPE (GROUP) Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |