CN201572796U - Three-roller centering device - Google Patents
Three-roller centering device Download PDFInfo
- Publication number
- CN201572796U CN201572796U CN2009202811918U CN200920281191U CN201572796U CN 201572796 U CN201572796 U CN 201572796U CN 2009202811918 U CN2009202811918 U CN 2009202811918U CN 200920281191 U CN200920281191 U CN 200920281191U CN 201572796 U CN201572796 U CN 201572796U
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- China
- Prior art keywords
- roller
- armfuls
- rolling
- drive unit
- opening
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- Expired - Fee Related
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Abstract
The utility model discloses a three-roller centering device. The three-roller opening can be precisely controlled. The centering precision of a capillary tube and a mandrel is improved. The wear of the mandrel is reduced. The three-roller opening is upward, thus feeding on the top when making the restraint rolling and the full-floating rolling of the steel tube. The utility model comprises a frame in which a drive unit is arranged, the drive unit is connected with a gear unit, and the gear unit drives the three-roller and controls the opening thereof.
Description
Technical field
The utility model relates to a kind of hot rolled seamless steel tube production line three-roller centring device.
Background technology
At present, the three-roller centring device structure in the hot rolled seamless steel tube production line is all very complicated, generally by two Driven by Hydraulic Cylinder pivoted arms, makes and embraces the circle that roller forms three kinds of opening degrees that vary in size.Generally comprise the material that comes greatly, embrace hollow billet and embrace three kinds of states of plug.The shortcoming of this device is: hollow billet and plug centering precision are low, three armfuls of roller locking plugs, and the plug wearing and tearing are big, and service life is short.Three armfuls of roller openings are towards the side, and it is rolling to be used for restraint, can't be applied to complete floating top material loading when rolling.
Summary of the invention
The purpose of this utility model is exactly for addressing the above problem, a kind of novel three-roller centring device is provided, its three armfuls of roller opening degrees can accurately be controlled, improve the centering precision of hollow billet and plug, reduce the plug wearing and tearing, three armfuls of roller openings are upwards realized the rolling and full top material loading function when floating rolled steel tube of restraint.
For achieving the above object, the utility model adopts following technical scheme:
A kind of three-roller centring device, it comprises frame 2, and drive unit is installed in frame 2, and drive unit is connected with geared system, and geared system drives three armfuls of rollers and the roller opening degree is embraced in control.
Described drive unit is the Displacement Feedback hydraulic cylinder 3 that is installed in the frame 2, and the oil cylinder piston bar of Displacement Feedback hydraulic cylinder 3 is connected with geared system.
Described geared system is a gear 4, and it is connected with the oil cylinder piston bar.
The opening of described three armfuls of rollers 1 upwards.
The utility model is embraced roller by a Displacement Feedback Driven by Hydraulic Cylinder for three by gear drive.Outreach by the control hydraulic cylinder piston rod is to control the size that three armfuls of rollers form opening degrees.
The beneficial effects of the utility model are: rational in infrastructure, easy to use, three armfuls of roller opening degrees can accurately be controlled, improve the centering precision of hollow billet and plug, reduce the plug wearing and tearing, three armfuls of roller openings are upwards realized the rolling and full top material loading function when floating rolled steel tube of restraint.
Description of drawings
Fig. 1 is the structural representation of this three-roller centring device;
Fig. 2 is the rearview of Fig. 1.
Among the figure: 1, embrace roller, 2, frame, 3, the Displacement Feedback hydraulic cylinder, 4, gear.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Among Fig. 1, Fig. 2, it comprises frame 2, and drive unit is installed in frame 2, and drive unit is connected with geared system, and geared system drives three armfuls of rollers and controls three armfuls of roller 1 opening degrees.Drive unit is the Displacement Feedback hydraulic cylinder 3 that is installed in the frame 2, and the oil cylinder piston bar of Displacement Feedback hydraulic cylinder 3 is connected with geared system.Geared system is a gear 4, and it is connected with the oil cylinder piston bar.The opening of three armfuls of rollers 1 is upwards realized the rolling and full top material loading function when floating rolled steel tube of restraint.
Use of the present utility model is: hollow billet is floating rolling entirely, when the oil cylinder piston bar does not stretch out, embraces the opening degree maximum that roller 1 forms for three, treats that rolling hollow billet can be from this example top supplied materials; Behind the material loading, give Displacement Feedback hydraulic cylinder 3 signals according to the hollow billet diameter, the oil cylinder piston bar stretches out certain distance, by gear 4 transmissions, drives three armfuls of roller 1 opening degrees and reduces, the centering hollow billet.Hollow billet is rolling finish after, oil cylinder piston bar withdrawal, three armfuls of rollers 1 are opened fully, a rolling cycle finishes; The hollow billet restraint is rolling, and when the oil cylinder piston bar did not stretch out, three armfuls of opening degree maximums that roller 1 forms treated that rolling hollow billet can be from this example top supplied materials; Behind the material loading, give Displacement Feedback hydraulic cylinder 3 signals according to the hollow billet diameter, the oil cylinder piston bar stretches out certain distance, by gear 4 transmissions, driving three armfuls of roller 1 opening degrees reduces, the centering hollow billet, in the hollow billet operation of rolling, hydraulic cylinder piston rod further stretches out, controlling three armfuls of roller 1 opening degrees dwindles, the centering plug, the circular runout of plug in the control hollow billet operation of rolling, the rolling accuracy of raising hollow billet.
Claims (4)
1. a three-roller centring device is characterized in that, it comprises frame (2), and drive unit is installed in frame (2), and drive unit is connected with geared system, and geared system drives three armfuls of rollers (1) and the roller opening degree is embraced in control.
2. three-roller centring device as claimed in claim 1 is characterized in that, described drive unit is for being installed in the Displacement Feedback hydraulic cylinder (3) in the frame (2), and the oil cylinder piston bar of Displacement Feedback hydraulic cylinder (3) is connected with geared system.
3. three-roller centring device as claimed in claim 1 or 2 is characterized in that, described geared system is gear (4), and it is connected with the oil cylinder piston bar.
4. three-roller centring device as claimed in claim 1 is characterized in that, the opening of described three armfuls of rollers (1) upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202811918U CN201572796U (en) | 2009-12-17 | 2009-12-17 | Three-roller centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202811918U CN201572796U (en) | 2009-12-17 | 2009-12-17 | Three-roller centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201572796U true CN201572796U (en) | 2010-09-08 |
Family
ID=42692676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202811918U Expired - Fee Related CN201572796U (en) | 2009-12-17 | 2009-12-17 | Three-roller centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201572796U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172643A (en) * | 2010-12-08 | 2011-09-07 | 太原重工股份有限公司 | Three-roller concentric support device |
| CN107597848A (en) * | 2017-09-29 | 2018-01-19 | 浙江明贺钢管有限公司 | Double oil cylinder controllable type three rolls holding unit mechanisms |
| CN109396192A (en) * | 2018-11-20 | 2019-03-01 | 北京京诚之星科技开发有限公司 | Centring machine |
| CN109647893A (en) * | 2018-06-05 | 2019-04-19 | 无锡市瑞尔精密机械有限公司 | Single hydraulic cylinder drive-type Three-roll plug steadier |
-
2009
- 2009-12-17 CN CN2009202811918U patent/CN201572796U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102172643A (en) * | 2010-12-08 | 2011-09-07 | 太原重工股份有限公司 | Three-roller concentric support device |
| CN107597848A (en) * | 2017-09-29 | 2018-01-19 | 浙江明贺钢管有限公司 | Double oil cylinder controllable type three rolls holding unit mechanisms |
| CN109647893A (en) * | 2018-06-05 | 2019-04-19 | 无锡市瑞尔精密机械有限公司 | Single hydraulic cylinder drive-type Three-roll plug steadier |
| CN109396192A (en) * | 2018-11-20 | 2019-03-01 | 北京京诚之星科技开发有限公司 | Centring machine |
| CN109396192B (en) * | 2018-11-20 | 2023-08-29 | 北京京诚瑞信长材工程技术有限公司 | Centering machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100908 Termination date: 20181217 |