CN2219166Y - Self-centring three-roller protector - Google Patents
Self-centring three-roller protector Download PDFInfo
- Publication number
- CN2219166Y CN2219166Y CN 94243067 CN94243067U CN2219166Y CN 2219166 Y CN2219166 Y CN 2219166Y CN 94243067 CN94243067 CN 94243067 CN 94243067 U CN94243067 U CN 94243067U CN 2219166 Y CN2219166 Y CN 2219166Y
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- roller
- rollers
- gear
- self
- cylinder
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- Expired - Fee Related
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Abstract
The utility model relates to a self-centring three-roller protector composed of a frame, an air cylinder, a connecting rod, an elevating carrier roller, three rollers, etc. The utility model is mainly characterized in that the three rollers form a symmetrical arrangement structure that two rollers are arranged upward, and one roller is arranged downward; the three rollers are respectively and eccentrically arranged on three gears, driven by a tandem type double pass cylinder and transmitted by the synchronous connecting rod and gears. The utility model has the advantages of compact structure, few spare parts and small occupation area; the symmetrical positioning of the three gears make the centering reliable, and because the structure that two rollers are arranged upward is adopted, the production efficiency is improved.
Description
The utility model relates to the rolling equipment of metal, the self-centering three roller protectors that use during especially a kind of seamless steel pipe hot-rolling drilling/rolling.
At present; the bore a hole protector of domestic use of seamless steel pipe hot-rolling all is the three roller protectors that adopt two cover drive systems; a roller is last; two rollers are following; dance roller is the one-tenth system in addition, and the top roll transmission divides opens, opens for a short time two grades greatly, and two lower rolls have only opens one grade for a short time; by multistage connecting rod transmission, whole protecting device complex structure, parts are many, floor space is big.Owing to adopt multistage connecting rod transmission, it is big that difficulty is adjusted in assembling, and the error that process in addition, assemble, wearing and tearing etc. occurs makes protector often be in slack and undisciplined state.In addition, roller is adjusted difficult, and weak effect often is to be in abnormal condition in the production, and the lower roll cylinder closes gas and do not allow its work sometimes, and dance roller is failure to actuate or is malfunctioning sometimes, and most of pipes " revolve " at the carrying roller place and go out external screw thread.
The utility model purpose just provide a kind of simple in structure, compact, easy to adjust, can self-centering three roller protectors.
The purpose of this utility model is implemented by following technical scheme:
Self-centering three roller protectors are made of frame, cylinder, connecting rod, running roller, lifting carrying roller etc.Three running rollers be two running rollers last, running roller is in symmetric arrays structure down, three running rollers off-centre respectively are contained on three gears, adopt tandem round trip air cylinder driven, by synchronising (connecting) rod and the common transmission of gear, the lifting carrying roller is by Eccentric Gear-drive down.Three running rollers divide under the driving of tandem round trip cylinder opens, opens for a short time two grades greatly.
Self-centering three roller protectors of the present utility model have been compared following advantage with existing three roller protectors:
1, compact conformation, spare part is few, floor space is little.Former dance roller independence architectonical changes dance roller into by following Eccentric Gear-drive, and it is little to make that the whole protecting apparatus takes up an area of, and integral replacing is convenient, and coordination is reliable, has eliminated the root that " external screw thread " produces.
2, adopt two rollers to change fundamentally in last structure that the big open-width degree of former top roll is big, actuation time is long, thereby improved production efficiency, shortened the cylinder stroke.
3, three running roller symmetry location wait the branch involute to rotate in the same way around the setting center along three, and it is concentric that track remains the center of circle, makes that protector centering is reliable.
Accompanying drawing is the utility model structural representation.
Below in conjunction with accompanying drawing the utility model is elaborated.
Self-centering three roller protectors are by frame 1, cylinder 6, formations such as connecting rod 10, running roller, lifting carrying roller 8.Running roller 3, running roller 4 are last, and running roller 11 is in following symmetric arrays.Running roller 3,4,11 off-centre respectively is contained on three gears 2,5,9, establishes carrier gear 12 between gear 2 and the gear 9, establishes carrier gear 7 between gear 5 and the gear 9.Tandem round trip cylinder 6 drives carrier gear 7,12 by synchronising (connecting) rod 10.Lifting carrying roller 8 is by gear 9 control transmissions.
The operation principle of self-centering three roller protectors: tandem round trip cylinder 6 starts when doing for a short time; cylinder 6 drives eccentric gear 2,5,9 by synchronising (connecting) rod 10 and carrier gear 7,12 and rotates in the same way; make three running rollers, 3,4,11 symmetries unclamp and to embrace hollow forging; when hollow forging has been worn the hole; tandem round trip cylinder 6 starts work greatly; in like manner, three running rollers rotate to greatly in the same way to be opened, and makes hollow forging to rout up.Lifting carrying roller 8 is by gear drive, and when three running rollers were opened for a short time, the position of lifting carrying roller 8 was lower than hollow forging slightly, therefore, avoided hollow forging generation " external screw thread ", when three running rollers are opened greatly, liter is on the rolling centerline of three rollers on the position of lifting carrying roller 8, can hold hollow forging, and hollow forging can be routed up.
Claims (2)
1; a kind of self-centering three roller protectors are by frame (1); cylinder (6); connecting rod (10); running roller; lifting carrying roller formations such as (8); it is characterized in that: three running roller middle rolls (3); running roller (4) is last; running roller (11) is in following symmetric arrays; running roller (3); (4); (11) off-centre is contained in three gears (2) respectively; (5); (9) on; establish carrier gear (12) between gear (2) and the gear (9); establish carrier gear (7) between gear (5) and the gear (9); cylinder (6) drives carrier gear (7) by synchronising (connecting) rod (10); (12), lifting carrying roller (8) is by gear (9) control transmission.
2, self-centering three roller protectors according to claim 1, it is characterized in that: cylinder (6) is a tandem round trip cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94243067 CN2219166Y (en) | 1994-10-12 | 1994-10-12 | Self-centring three-roller protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94243067 CN2219166Y (en) | 1994-10-12 | 1994-10-12 | Self-centring three-roller protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2219166Y true CN2219166Y (en) | 1996-02-07 |
Family
ID=33849528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94243067 Expired - Fee Related CN2219166Y (en) | 1994-10-12 | 1994-10-12 | Self-centring three-roller protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2219166Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
1994
- 1994-10-12 CN CN 94243067 patent/CN2219166Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |