CN204213167U - Screw down mechanism of rolling mill completely fills tapered roller thrust bearing with the long lifetime - Google Patents
Screw down mechanism of rolling mill completely fills tapered roller thrust bearing with the long lifetime Download PDFInfo
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- CN204213167U CN204213167U CN201420623872.9U CN201420623872U CN204213167U CN 204213167 U CN204213167 U CN 204213167U CN 201420623872 U CN201420623872 U CN 201420623872U CN 204213167 U CN204213167 U CN 204213167U
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- blowout patche
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- seat ring
- thrust
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Abstract
Screw down mechanism of rolling mill completely fills tapered roller thrust bearing with the long lifetime, is made up of seat ring, blowout patche and thrust cone roller.Under identical with existing boundary dimension, Bearing inner size adopt claimant original creation " Ultimate Design of Rolling Bearings method " design, in proof strength situation, make blowout patche and the effective arm of seat ring the thinnest, roller diameter
, roller length
, ° 40 ' ± 5 ', roller number Z=18, roller semi-cone angle ψ=9.For without retainer full complement, obtain maximum rated static load charge values, meet user's long life requirement.Blowout patche upper end is convex spherical, and good rigidly matches with housing screw concave spherical surface, has adjustable disposition.The raceway bus elongation line of roller axis, blowout patche and seat ring to meet on bearing central axis a bit, ensures that slow-speed of revolution roller surface can not skid, pure rolling, startup be flexible.Material selection steel for carburizing and carburizing and quenching technique can improve part surface wear resistance, good core toughness, can bear greater impact load.For iron and steel and metallurgy industry screw down mechanism of rolling mill.
Description
(1) technical field:
A kind of tapered roller thrust bearing, belongs to large size bearing.For screw down mechanism of rolling mill.Rolling mill screwdown bearing is commonly referred in metallurgical, coloured industry.Belong to engineering element bearing class (F16C).
(2) background technique:
The tapered roller thrust bearing of existing iron and steel metallurgy, coloured industry screw down mechanism of rolling mill (below can referred to as pressure bearing), see Fig. 3 and Fig. 1, existing pressure bearing comprises: static seat ring 1, phase counter race rotate blowout patche 3, establish row circumferentially uniform multiple thrust cone roller 2 between seat ring and the vertical h of blowout patche; There is the housing screw 4 coordinated with it blowout patche 3 upper end.Existing seat ring outer diameter D
1=409.58mm; Existing blowout patche outer diameter D
3=407.21mm, blowout patche sphere cuts round nominal diameter d
3=355.6mm, existing bearing nominal height H
3=121mm, bearing overall height H=140.77mm.Whole bearing is contained in bearing support 5.There are the following problems for existing pressure bearing: because 1 cover bearing need bear milling train 1/2 rolling load, stand under load is large, and in existing rolling mill screwdown bearing, thrust cone roller diameter is little, length is short, the rated static load value of bearing is low, can not meet large, the long-life requirement of user's load.
(3) summary of the invention:
The screw down mechanism of rolling mill that the utility model proposes completely fills tapered roller thrust bearing with the long lifetime, and its object is exactly solve the problem that existing milling train tapered roller thrust bearing rated static load value is low, working life is short.
Technological scheme is as follows:
Screw down mechanism of rolling mill completely fills tapered roller thrust bearing with the long lifetime, has static seat ring, the blowout patche that phase counter race rotates, and establishes the thrust cone roller of row circumferentially uniform multiple Z between seat ring and the vertical h of blowout patche; There is the housing screw coordinated with it blowout patche upper end.Bearing boundary dimension is: seat ring outer diameter D
1=409.58mm, blowout patche outer diameter D
3=407.21mm, blowout patche sphere cuts round nominal diameter d
3=355.6mm, bearing nominal height H
3=121mm, bearing overall height H=140.77mm.It is characterized in that: 1) thrust cone roller maximum diameter
, roller length
, roller semi-cone angle ψ=9 ° 40 ' ± 5 ', circumferentially uniform multiple thrust cone roller number Z=18.2) blowout patche upper end is convex spherical, matches with the concave spherical surface of housing screw lower end.3) axis of each thrust cone roller, blowout patche raceway bus elongation line and the long line of seat ring raceway bus all meet at bearing central axis O
1o
2upper 1 O.
The optional optimized numerical value of said structure key element of pressure bearing is: thrust cone roller maximum dimension D w=63.808mm, roller length L=147.5mm, roller semi-cone angle ψ=9 ° 40 ', circumferentially uniform multiple thrust cone roller number Z=18.Above-mentioned seat ring, blowout patche and roller material can adopt G20Cr2Ni4A steel for carburizing, and surface hardness is 58-62HRC, and centre hardness is 25-45HRC.
The utility model beneficial effect:
1) Bearing inner size adopts " Ultimate Design of Rolling Bearings method " design of claimant's original creation, makes the thick size h of the effective arm of blowout patche when proof strength
3with the thick size h of the effective arm of seat ring
1minimum (see Fig. 1), roller diameter Dw is maximum, and length L the longest (see Fig. 2), can fill the roller of maximum quantity Z, becomes and completely fills rolling element structure without retainer.Can obtain the maximum rated static load value of this bearing according to GB/T4662 standard rolling bearing rated static load formula, bearing realizes the long lifetime.2) the raceway bus elongation line of roller axis and blowout patche raceway bus elongation line, seat ring to meet on bearing central axis a bit, and ensure that between rolling element and two raceways be pure rolling, all can not skid or slide at any point of rolling surface, bearing starts flexible.3) blowout patche 3 upper end is convex spherical 3.1 good rigidly, and convex spherical 3.1 matches with the concave spherical surface 4.1 of housing screw 4 lower end, has good aligning.4) each part material selects G20Cr2Ni4A steel for carburizing, and after the heat treatment steps such as carburizing, quenching, tempering, surface hardness is 58-62HRC, and centre hardness is 25-45HRC, surface abrasion resistance, the toughness that heart portion has had again, can bear greater impact load.
(4) accompanying drawing explanation
Fig. 1 screw down mechanism of rolling mill completely fills tapered roller thrust bearing positive view with the long lifetime.
Fig. 2 single thrust cone roller 2 shape figure.
Fig. 3 screw down mechanism of rolling mill completely fills tapered roller thrust bearing position view in milling train with the long lifetime.
(5) embodiment
See Fig. 1, screw down mechanism of rolling mill completely fills tapered roller thrust bearing with the long lifetime, has by the static seat ring 1 of below, and the blowout patche 3 of the top that phase counter race rotates, establishes a row circumferentially uniform Z=18 thrust cone roller 2 between seat ring and the vertical h of blowout patche.There is the housing screw 4 coordinated with it blowout patche 3 upper end.Seat ring outer diameter D
1=409.58mm; Blowout patche outer diameter D
3=407.21mm; Blowout patche sphere cuts round nominal diameter d
3=355.6mm; Bearing nominal height H
3=121mm; Bearing overall height H=140.77mm.See Fig. 2, each thrust cone roller 2 maximum dimension D w=63.808mm, roller length L=147.5mm, roller semi-cone angle ψ=9 ° 40 '.
See Fig. 1, circumferentially raceway bus 1.0 elongation line of the axis 2.0 of each roller of a uniform Z=18 thrust cone roller 2, blowout patche 3 raceway bus 3.0 elongation line and seat ring 1 all meets at bearing central axis O
1o
2upper 1 O.
See Fig. 1, Fig. 3, blowout patche 3 upper end is convex spherical 3.1, and spherical radius is R
3; Convex spherical 3.1 matches with the concave spherical surface 4.1 of housing screw 4 lower end.See Fig. 3, whole bearing is contained in bearing support 5, and marking 5 in Fig. 3 is rolling mill roll.Above-mentioned seat ring 1, blowout patche 3 and roller 2 material all select G20Cr2Ni4A to ooze steel, and it is 58-62HRC that heat treatment process realizes surface hardness, and centre hardness is 25-45HRC.
Claims (3)
1. screw down mechanism of rolling mill completely fills tapered roller thrust bearing with the long lifetime, there is static seat ring (1), the blowout patche (3) that phase counter race rotates, establishes the thrust cone roller (2) of row circumferentially uniform multiple Z between seat ring and the vertical h of blowout patche; There is the housing screw (4) coordinated with it blowout patche upper end; Bearing boundary dimension is seat ring outer diameter D
1=409.58mm; Blowout patche outer diameter D
3=407.21mm, blowout patche sphere cuts round nominal diameter d
3=355.6mm, bearing nominal height H
3=121mm; Bearing overall height H=140.77mm.
It is characterized in that:
1) thrust cone roller maximum diameter
roller length
roller semi-cone angle ψ=9 ° 40 ' ± 5 ', circumferentially uniform multiple thrust cone roller number Z=18;
2) blowout patche upper end is convex spherical (3.1), matches with the concave spherical surface (4.1) of housing screw (4) lower end;
3) axis (2.0) of each thrust cone roller, blowout patche raceway bus (3.0) elongation line and seat ring raceway bus (1.0) elongation line all meet at bearing central axis O
1o
2upper 1 O.
2. by tapered roller thrust bearing described in claim 1, it is characterized in that thrust cone roller maximum dimension D w=63.808mm, roller length L=147.5mm, roller semi-cone angle ψ=9 ° 40 ', circumferentially uniform multiple thrust cone roller number Z=18.
3., by tapered roller thrust bearing described in claim 1, it is characterized in that seat ring, blowout patche and roller material all adopt G20Cr2Ni4A steel for carburizing, surface hardness is 58-62HRC, and centre hardness is 25-45HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420623872.9U CN204213167U (en) | 2014-10-24 | 2014-10-24 | Screw down mechanism of rolling mill completely fills tapered roller thrust bearing with the long lifetime |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420623872.9U CN204213167U (en) | 2014-10-24 | 2014-10-24 | Screw down mechanism of rolling mill completely fills tapered roller thrust bearing with the long lifetime |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204213167U true CN204213167U (en) | 2015-03-18 |
Family
ID=52981841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420623872.9U Active CN204213167U (en) | 2014-10-24 | 2014-10-24 | Screw down mechanism of rolling mill completely fills tapered roller thrust bearing with the long lifetime |
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|---|---|
| CN (1) | CN204213167U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545570A (en) * | 2016-08-31 | 2017-03-29 | 马鞍山支点传孚智能摩擦工业研究院有限公司 | It is a kind of to roll tapered roller thrust bearing |
| CN108361287A (en) * | 2018-04-24 | 2018-08-03 | 瓦房店爱国轴承研究院有限公司 | Lengthen taper roll bearing |
-
2014
- 2014-10-24 CN CN201420623872.9U patent/CN204213167U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545570A (en) * | 2016-08-31 | 2017-03-29 | 马鞍山支点传孚智能摩擦工业研究院有限公司 | It is a kind of to roll tapered roller thrust bearing |
| CN108361287A (en) * | 2018-04-24 | 2018-08-03 | 瓦房店爱国轴承研究院有限公司 | Lengthen taper roll bearing |
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| GR01 | Patent grant |