CN201244589Y - Overload protection device for seamless pipe tandem mill roller - Google Patents
Overload protection device for seamless pipe tandem mill roller Download PDFInfo
- Publication number
- CN201244589Y CN201244589Y CNU2008200148282U CN200820014828U CN201244589Y CN 201244589 Y CN201244589 Y CN 201244589Y CN U2008200148282 U CNU2008200148282 U CN U2008200148282U CN 200820014828 U CN200820014828 U CN 200820014828U CN 201244589 Y CN201244589 Y CN 201244589Y
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- Prior art keywords
- safe
- overload protection
- protective disc
- overload protective
- shearing
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- Expired - Fee Related
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Abstract
The utility model relates to a seamless tube continuous mill roll overload protective device, comprising a protective disc seat, a pressure block and a stable pin. The utility model is characterized in that a disc-shaped overload protective disc is arranged between the protective disc seat and the pressure block; a circle of safe shearing platforms are arranged at the outside of the overload protective disc along the vertical direction; the lower ends of the safe shearing platforms butted and stuck on the shearing platforms; the upper part of the overload protective disc is tightly fixed on the pressure block by the stable pin; as the structure of the safe shearing platform does not generate tensile deformation under the normal rolling pressure, rolling precision is guaranteed and the adjustment of the roll can not change due to breading cap factors. In addition, the safe shearing platforms can guarantee the safe use of the machines, therefore, the seamless tube continuous mill roll overload protective device is safe and reliable, prolongs the service life, avoids shutdown accidents caused by the damaged breading caps, improves the yield of the mill and equipment operation rate, reduces storage of spare parts and the product cost.
Description
Technical field
The utility model belongs to the rolling machinery field, particularly a kind of Machine guarding that is used for behind the seamless pipe continuous rolling mill roller frame excess load.
Background technology
Seamless pipe MPM tandem mill is a seamless pipe production equipment more advanced in the world today.For guaranteeing machine security, roll is provided with breading cap, and its effect is when the milling train live load surpasses intrinsic weight bearing power; breading cap will rupture automatically; the roll gap of roll is amplified, thereby reduce the live load of milling train, play the effect of protection device security.Now the breading cap of Shi Yonging is to utilize the fracture of coupling part default between two safe grooves to realize the purpose that tension failure is protected, but there is following defective in this kind fracture protected mode:
One is to use the life-span short, and only be 1.5 days the service time of breading cap the shortest, and the longest is 3 days; The 2nd, there is potential safety hazard.In rolling process, the groove of the breading cap distortion that under the effect of greater impact load, is stretched when especially steel billet is nipped, after several times stretching-Recovery Process, the metal structure generation creep of groove coupling part, when reaching certain number of times, the metal of coupling part surpasses its fatigue limit, even if milling train is in normal rolling load, and breading cap also unexpected fracture can take place.The consequence that above-mentioned defective caused is: after the safe groove distortion, roller gap is changed, its distortion is difficult for finding in addition, so very easily produce a large amount of substandard products; Improper damage number of times is more, causes frequent accidental shutdown, has a strong impact on the operating rate of equipment.Especially suddenly fracture causes the inner heap of milling train steel accident, and 4～5 hours at least processing time needed 16～24 hours at most.In addition, because the improper damage of breading cap is more, so its spare part occupancy expenses is bigger, and the making processing charges of breading cap increases in addition, thereby has increased the weight of the cost burden of product.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of do not take place improper damage and distortion in order to eliminate above-mentioned defective, long service life, and roll protective device that can instantaneous fracture when overload.Its solution is:
A kind of seamless pipe continuous rolling mill roller overload protection arrangement; comprise protective disc seat, briquetting and steady pin; be characterized between protective disc seat and briquetting, installing a disc overload protection dish; vertically be provided with the safe shear platform of a circle with overload protection dish upper outer edge; safe shear platform lower end is supported and is affixed on the protective disc seat shearing platform, is fastened on the briquetting with steady pin above the overload protection dish.
Because the utility model adopts safe shear platform structure, under normal draught pressure the stretcher strain phenomenon can not appear, therefore guaranteed rolling accuracy, the adjustment parameter of roll does not change because of the factor of breading cap yet.The maximum shear stress that safe shear platform bears can guarantee the safe handling of machinery through accurately calculating, and safe and reliable, and improve service life greatly.Thereby stopped to have improved rolling mill yield and equipment operation rate, reduced the spare part deposit, reduced product cost because of breading cap damages the stopping accident that causes.
Description of drawings
Accompanying drawing is a seamless pipe continuous rolling mill roller overload protection arrangement structural profile schematic diagram.
Among the figure: protective disc seat 1, briquetting 2 surely sells 3, overload protection dish 4, safe shear platform 5.
The specific embodiment
By accompanying drawing as seen, the utility model comprise protective disc seat 1, briquetting 2, surely sell 3, overload protection dish 4 and safe shear platform 5.Overload protection dish 4 bottoms are disc, the parallel safe shear platform 5 of a circle that is provided with its outer on the top of overload protection dish 4 vertical outers.Safe shear platform 5 lower ends push against and are affixed on the shearing platform that protective disc seat 1 reserves; Overload protection dish 4 is installed between protective disc seat 1 and the briquetting 2, and the steady pin 3 of its upper surface and briquetting 2 usefulness is locked together.The stressed back compressing of discus overload protection dish 4 moves down; with the safe shear platform 5 of its one under the effect of protective disc seat 1 shearing platform; to be subjected to a shearing force; when this shearing force reaches setting value; safe shear platform 5 will be cut off; thereby roller gap is enlarged, play the effect of roll overload protection.
Claims (1)
1, a kind of seamless pipe continuous rolling mill roller overload protection arrangement; comprise protective disc seat, briquetting and steady pin; it is characterized in that; install a disc overload protection dish between protective disc seat and the briquetting; be provided with the safe shear platform of a circle at overload protection dish upper outer edge; safe shear platform lower end is supported and is affixed on the protective disc seat shearing platform, and overload protection dish and briquetting are with surely locking admittedly together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200148282U CN201244589Y (en) | 2008-08-13 | 2008-08-13 | Overload protection device for seamless pipe tandem mill roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200148282U CN201244589Y (en) | 2008-08-13 | 2008-08-13 | Overload protection device for seamless pipe tandem mill roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201244589Y true CN201244589Y (en) | 2009-05-27 |
Family
ID=40728403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200148282U Expired - Fee Related CN201244589Y (en) | 2008-08-13 | 2008-08-13 | Overload protection device for seamless pipe tandem mill roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201244589Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102327931A (en) * | 2011-07-26 | 2012-01-25 | 太原通泽重工有限公司 | Pressurized overload protection device of straightening machine |
| CN103008356A (en) * | 2012-12-28 | 2013-04-03 | 太原通泽重工有限公司 | Overload protection device of rod stripping machine |
-
2008
- 2008-08-13 CN CNU2008200148282U patent/CN201244589Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102327931A (en) * | 2011-07-26 | 2012-01-25 | 太原通泽重工有限公司 | Pressurized overload protection device of straightening machine |
| CN103008356A (en) * | 2012-12-28 | 2013-04-03 | 太原通泽重工有限公司 | Overload protection device of rod stripping 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 |
Granted publication date: 20090527 Termination date: 20140813 |
|
| EXPY | Termination of patent right or utility model |