CN200961674Y - Welding large gear of converter slanting device secondary speed reducer - Google Patents
Welding large gear of converter slanting device secondary speed reducer Download PDFInfo
- Publication number
- CN200961674Y CN200961674Y CN 200620077289 CN200620077289U CN200961674Y CN 200961674 Y CN200961674 Y CN 200961674Y CN 200620077289 CN200620077289 CN 200620077289 CN 200620077289 U CN200620077289 U CN 200620077289U CN 200961674 Y CN200961674 Y CN 200961674Y
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- gear
- gear ring
- welding
- gearwheel
- hard
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Abstract
The utility model relates to a big welding gear for the converter tilting device secondary speed reducer, comprising a hub, a radial plate and a gear ring, wherein the hub, the radial plate and the gear ring are welded, characterized in that the gear ring has the hard gear face processed with high-strength superior alloy steel in carburizing quenching, with the hardness of the gear face being HRC58-62. The utility model has the advantage that the gear ring of the big welding gear is processed with high-strength superior alloy steel in carburizing quenching for the hard gear face, and thereby the wearing-resistant and the bearing capability is significantly improved, with pitting corrosion lessened or avoided, the operation life of the big welding gear lengthened, the integral weight of the big welding gear ring lessened, the volume of the big welding gear ring decreased and the precision of the gear ring increased. The utility model is mature in the hard gear face processing specification and easy in implementation.
Description
Technical field
The utility model relates to a kind of welding gearwheel, the welding gearwheel in especially a kind of converter inclining device secondary speed-reducing machine.
Background technique
The reducing gear of converter inclining device is the supporting important transmission device of metallurgy industry steelmaking system, the general flexible driving type of four point gearing integrals that adopts of converter inclining device speed reducer, and equalising torque mechanism is the torsion bar device.In the reducing gear of converter inclining device, adopt twice deceleration usually, wherein slow down for the first time and adopt four speed reducers, on their output shaft, is furnished with hard flank of tooth small gear, speed reducer adopts the welding gearwheel for the second time, four speed reducers are evenly distributed on welding gearwheel periphery, drive welding gearwheel in the secondary speed-reducing machine synchronously by the hard flank of tooth small gear on speed reducer output shaft.
The gear ring of welding gearwheel mainly contains two kinds of forms in the converter inclining device secondary speed-reducing machine at present commonly used, a kind of is to adopt the middle hard gear-face gear ring, the 2nd, adopt the hard flank of tooth gear ring of surface hardening, their general 42CrMo and 35CrMo steel of adopting, wherein: middle hard gear-face adopts the heat treatment of gear to adopt quenching with Subsequent tempering, and its operating procedure is a quenching+high-temperature tempering, to obtain the tempered sorbite tissue, tempering temperature＞500 ℃, tooth face hardness scope HB250～300; The hard flank of tooth of surface hardening adopts modified rear surface Quenching Treatment, and the precision of gearwheel is 7 grades, and the tooth face hardness scope is HRC50～55.
No matter the gear ring of welding gearwheel is to adopt the middle hard gear-face gear ring, still adopt the hard flank of tooth gear ring of surface hardening, relative volume is bigger, because their tooth face hardness is lower, hard flank of tooth small gear difference of hardness distance is bigger with being furnished with on the speed reducer output shaft, cause welding the tooth surface abrasion of the gear ring of gearwheel, directly have influence on their working life.
Summary of the invention
The purpose of this utility model is: the gear ring at present welding gearwheel adopts the middle hard gear-face gear ring, or adopt the relative volume of the hard flank of tooth gear ring of surface hardening bigger, and their tooth face hardness is lower, directly have influence on the practical problem in their working life, provide a kind of new converter inclining device, the welding gearwheel in the secondary speed-reducing machine.
The purpose of this utility model is achieved in that the welding gearwheel in a kind of converter inclining device secondary speed-reducing machine, comprise wheel hub, disc and gear ring, described wheel hub, disc and gear ring form by welding, it is characterized in that: the hard flank of tooth that gear ring adopts carburizing and quenching to process by the high strength superior alloy steel, tooth face hardness is HRC58～62.
In the present invention: the high strength superior alloy steel of described making gear ring is 20CrNi2MoA, or 20CrMnMo.
Advantage of the present utility model is: after the gear ring of the welding gearwheel in the converter inclining device secondary speed-reducing machine adopts the hard flank of tooth of carburizing and quenching processing by the high strength superior alloy steel, the wear resistance and the bearing capacity of the flank of tooth have been improved greatly, reduce or avoid the generation of point corrosion, prolonged the working life of welding main gear rim, alleviated the overall weight of welding main gear rim simultaneously, dwindle the volume of welding main gear rim, improved the grade of accuracy of gear ring.The technical maturity that the processing method of the hard flank of tooth of the present invention relates to, easy to implement.
Description of drawings
Fig. 1 is the structural representation of converter inclining device speed reducer;
Fig. 2 is the structural representation of the welding gearwheel in the secondary speed-reducing machine.
Among the figure: 1, welding gearwheel, 2, wheel hub, 3, disc, 4, gear ring, 5, speed reducers, 6, hard flank of tooth small gear.
Embodiment
Accompanying drawing discloses the utility model embodiment's concrete structure without limitation, and the utility model is further described below in conjunction with accompanying drawing.
As seen from Figure 1, usually adopt twice deceleration in the reducing gear of converter inclining device, wherein slow down for the first time and adopt four speed reducers 5, on their output shaft, is furnished with hard flank of tooth small gear 6, speed reducer adopts welding gearwheel 1 for the second time, four speed reducers 5 are evenly distributed on welding gearwheel 1 periphery, drive welding gearwheels 1 in the secondary speed-reducing machines synchronously, realize slowing down for the second time by the hard flank of tooth small gear 6 on speed reducer 5 output shaft.
As seen from Figure 2, welding gearwheel 1 comprises wheel hub 2, disc 3 and gear ring 3, and they are by being welded.
During concrete enforcement, gear ring 3 can also adopt high strength superior alloy steel making such as 20CrMnMo.
To process respectively and get wheel hub 2, disc 3 and gear ring 3, wherein, No. 35 steel processing of wheel hub 2 usefulness, disc 3 usefulness 16Mn processing, gear ring 3 usefulness 42CrMo processing is with wheel hub 2, disc 3 and gear ring 3 welding, and carry out stress removing, roughing successively then, thick gear hobbing, quenching with Subsequent tempering, welding inspection, each one of finish turning and smart gear hobbing form welding gearwheel 1, and the tooth face hardness of gear ring 3 is HB250～300.For the speed ratio of realizing embodiment 1 and the requirement of output torque, according to ISO6336-1996 (spur gear wheel and helical gear bearing capacity are calculated) and ISO1328-1997 (the international accuracy of gear standard of the nineties) design, the diameter of welding gearwheel 1 will reach Φ 4207mm, and volume and weight is obviously greater than embodiment 1.
Claims (2)
1, the welding gearwheel in a kind of converter inclining device secondary speed-reducing machine, comprise wheel hub, disc and gear ring, described wheel hub, disc and gear ring form by welding, it is characterized in that: the hard flank of tooth that gear ring adopts carburizing and quenching to process by the high strength superior alloy steel, tooth face hardness is HRC58～62.
2, the welding gearwheel in the converter inclining device secondary speed-reducing machine according to claim 1, it is characterized in that: the high strength superior alloy steel of described making gear ring is 20CrNi2MoA, or 20CrMnMo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620077289 CN200961674Y (en) | 2006-09-25 | 2006-09-25 | Welding large gear of converter slanting device secondary speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620077289 CN200961674Y (en) | 2006-09-25 | 2006-09-25 | Welding large gear of converter slanting device secondary speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200961674Y true CN200961674Y (en) | 2007-10-17 |
Family
ID=38798191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620077289 Expired - Lifetime CN200961674Y (en) | 2006-09-25 | 2006-09-25 | Welding large gear of converter slanting device secondary speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200961674Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248377A (en) * | 2011-06-30 | 2011-11-23 | 重庆市蓝黛实业有限公司 | Welding process posterior to heat treatment of automobile transmission gear |
| CN102990315A (en) * | 2012-12-20 | 2013-03-27 | 常熟市大生机械厂 | Preparation method of large gear ring on rotary drum of large concrete mixer |
-
2006
- 2006-09-25 CN CN 200620077289 patent/CN200961674Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248377A (en) * | 2011-06-30 | 2011-11-23 | 重庆市蓝黛实业有限公司 | Welding process posterior to heat treatment of automobile transmission gear |
| CN102990315A (en) * | 2012-12-20 | 2013-03-27 | 常熟市大生机械厂 | Preparation method of large gear ring on rotary drum of large concrete mixer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071017 |
|
| EXPY | Termination of patent right or utility model |