CN202937629U - Bearing unit used for supporting transmission shaft and gear reducer - Google Patents
Bearing unit used for supporting transmission shaft and gear reducer Download PDFInfo
- Publication number
- CN202937629U CN202937629U CN2012206776737U CN201220677673U CN202937629U CN 202937629 U CN202937629 U CN 202937629U CN 2012206776737 U CN2012206776737 U CN 2012206776737U CN 201220677673 U CN201220677673 U CN 201220677673U CN 202937629 U CN202937629 U CN 202937629U
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- CN
- China
- Prior art keywords
- bearing unit
- transmission shaft
- ring
- outer ring
- inner ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
- F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
- F16C19/385—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
- F16C19/386—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings in O-arrangement
Abstract
The utility model relates to a bearing unit used for supporting a transmission shaft. The bearing unit comprises an inner ring, an outer ring, a sealing member and tapered rollers, wherein the two sets of tapered rollers are respectively positioned between the inner ring and the outer ring; the inner ring has a split structure; the outer ring has an integral structure; and the sealing member is arranged between the outer ring and the inner ring. The utility model also relates to a gear reducer which mainly comprises a box body, a transmission shaft, a driving bevel gear and a driven bevel gear, wherein the transmission shaft is arranged on the box body through the bearing unit; and a non-return locking nut is assembled on the transmission shaft outside the bearing unit. According to the reducer, the operating stability of the bevel gear is improved, the traditional assembling method for obtaining the required bearing clearance by replacing a thin pad and repeatedly adjusting is changed, the clearance adjustment is saved, the assembling manufacturability and the assembling reliability of the reducer are greatly improved, the complex process flow during the original assembly is reduced, and the production efficiency is improved. In addition, the bearing unit has the advantages of compact structure, easiness in installation and detachment and the like.
Description
Technical field
The utility model belongs to the support bearing assembly technical field, particularly relates to a kind of bearing unit for supporting shaft and gear reduction unit.
Background technique
As everyone knows, bearing generally is used for supporting shaft, the selection of kinds of bearings is generally carried out according to the actual demand of equipment, such as spring bearing, floating bearing, thrust-bearing etc., which kind of bearing technical parameter therein is all particularly important, that is exactly play, affects the transmission accuracy of transmission shaft between the large young pathbreaker of play.Following gear reduction unit is that example describes.
Gear reduction unit, when adopting spiral bevel gear as the one-level transmission, the support of its transmission shaft is mainly adopted two cover tapered roller bearings 11, bearing gasket 12, is adjusted the formation bearing housing assemblies such as assembly 13, sealing gland 14, ring 15, bearing housing 16, sealing spacer 17, specifically sees also Fig. 5.
The bearing housing assembly structure in order to ensure main shaft support reliability and the stability of bevel gear meshing parameter, need strict following requirement of controlling:
1, the poor 0.01mm that is not more than of bearing bore diameter, the poor 0.01mm that is not more than of inner ring up and down two plane parallel.
2, the parallel error of ring both ends of the surface is not more than 0.01mm, and the perpendicularity franchise of endoporus cylinder and both ends of the surface is not more than 0.015mm.
3, the bearing housing inner ring is not more than 0.015mm to the coaxality franchise of outer ring, and the jerk value franchise that bearing outer ring is located end face is not more than 0.015mm, and the jerk value franchise that the bearing housing flange is located end face is not more than 0.01mm.
4, the parallel error of lock washer both ends of the surface is not more than 0.01mm.
5, the locking nut end face is not more than 0.02mm with respect to the perpendicularity franchise of screw thread cylinder.
6, sealing spacer Internal and external cycle coaxality franchise is not more than 0.015mm, and location end face squareness franchise is not more than 0.02mm.The bearing housing assembly of said structure has the following disadvantages:
1, for guaranteeing main shaft pretightening force and reasonably play control, the end face interpolation spacer at bearing inner race and ring generally needs the test dismounting through 2-3 time in assembly process, just can reach technological requirement, and assembly process is loaded down with trivial details, inefficiency.
2, because making the pretightening force test, the part cumulative error has illusion.
3, drive bevel gear is subjected to spatial constraints, and the two bearings spacing is little, bearings intensity less.
4, the high rotating speed of input end and open larger inertia impact of when braking easily makes the bearing pair play that supports the speed reducer driving shaft become large, the main shaft pretightening force is changed, thereby engagement has a negative impact to tooth surfaces of bevel gears, even causes the premature wear of the flank of tooth.
Summary of the invention
The utility model provides a kind of assembling performance good for solving the technical problem that exists in known technology, can omit the play adjustment, and is lightweight, compact structure, the bearing unit and the gear reduction unit that are used for supporting shaft of the advantage such as load bearing capacity is large, and grease lubrication is non-maintaining.
The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
A kind of bearing unit for supporting shaft, this bearing unit comprises inner ring, outer ring, sealing component and tapered roller, it is characterized in that: described tapered roller adopts two groups, lay respectively between inner ring and outer ring, described inner ring adopts Split type structure, integral structure is adopted in described outer ring, is provided with sealing component between described outer ring and inner ring.
The utility model can also adopt following technical measures:
Difference in internal diameters between described two inner rings is not more than 0.006mm.
Fill between described inner ring and outer ring and use lubricant grease.
Described sealing component radially is inlaid between inner ring and outer ring, and is axially concordant with end face.
A kind of gear reduction unit mainly comprises casing, transmission shaft, and drive bevel gear and driven bevel pinion is characterized in that: described transmission shaft is arranged on casing by above-mentioned bearing unit, is fitted with the stopping lock jack panel on the outside transmission shaft of described bearing unit.
The utility model can also adopt following technical measures:
Described stopping lock jack panel adopts abnormally-structured, mainly comprise nut body, described nut body by thread set on described transmission shaft, the outside one of nut body is processed with the distortion neck ring, and described distortion neck ring can make it local deformation embedding splined driveshaft groove by external force and realize retaining locking.
Between the excircle of described bearing unit and casing, seal ring is installed.
Described seal ring adopts circumferential sealing or angle sealing.
Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme, not only the local assembly structure that is comprised of various parts is carried out overall simplification, and whole performance more further optimizes, the advantage that has and good effect:
1, two bearings are made the bearing unit of disjunctor form, guaranteed that the play of active conical tooth wheel support bearing is stable, the stability when having improved bevel gear work.
2, change traditional Shim and repeatedly adjusted the assembly method that obtains bearing clearance, the inner play of bearing unit is controlled by Bearing Factory is accurate, omitted the play adjustment, manufacturability and the reliability of speed reducer assembling have greatly been improved, reduce numerous and diverse process flow of original when assembling, improved manufacturing efficiency.
3, overcome original structure and be difficult to control the pretightening force illusion that causes, stability and the conformity of control bearing clearance that can be good because of a plurality of part accumulated errors.
4, the closed autonomous grease lubrication form of bearing unit, in the time of can significantly reducing speed reducer work, the temperature rise of box house lubricant oil, make wear-resistant media stabilize work in lubricant oil, stops the premature wear of the gear pair flank of tooth, improves the life-span of gear.
5, increased in limited space bearing to drive sprocket axle to bearing length, improved the radial stability of driving shaft.
In addition, the utility model also has the advantages such as compact structure, lightweight, load bearing capacity are large, low noise, is used for the gear reduction unit of this bearing unit, this be apt to gear reduction performance quality, improve working life.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the utility model and drive shaft cartridge distribution structure schematic diagram;
Fig. 3 is the gear reduction unit structural representation;
Fig. 4 is stopping lock jack panel structural representation;
Fig. 5 is existing transmission shaft supporting way structural representation.
In figure: 1, inner ring; 2, outer ring; 3, tapered roller; 4, sealing component; 5, casing; 6, transmission shaft; 6-1, keyway; 7, drive bevel gear; 8, driven bevel pinion; 9, stopping lock jack panel; 9-1, nut body; 9-2, distortion neck ring; 10, seal ring; 11, tapered roller bearing; 12, bearing gasket; 13, adjust assembly; 14, sealing gland; 15, ring; 16, bearing housing; 17, sealing spacer.
Embodiment
For further understanding summary of the invention of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
see also Fig. 1 to Fig. 2, a kind of bearing unit for supporting shaft, this bearing unit comprises inner ring 1, outer ring 2 and tapered roller 3, described tapered roller 3 adopts two groups, lay respectively between inner ring 1 and outer ring 2, described inner ring 1 adopts Split type structure, integral structure is adopted in described outer ring 2, be provided with sealing component 4 between described outer ring 2 and inner ring 1, sealing member and existing sealing means have larger difference, reduced existing sealing gland, directly it is inlaid between inner ring and outer ring, thereby compacter on the structure, more reliable on the sealability, but also the manufacturing of minimizing sealing gland.
The utility model can also adopt following technical measures:
Difference in internal diameters between described two inner rings is not more than 0.006mm.
Fill between described inner ring 1 and outer ring 2 and use lubricant grease.
Above-mentioned sealing component can adopt the integral sealing member, also can adopt described sealing component to be inlaid in sealing gland, seal, no matter adopt above-mentioned which kind of sealing means, sealing component is concordant with the outer section of inside and outside circle at axial direction, thereby make structure compacter, and the mounting point of sealing component an end or the end positions of installation shaft bearing unit according to actual needs.
Above-mentioned bearing unit is used for making a kind of gear reduction unit, see also Fig. 3 and Fig. 4, this kind gear reduction unit is compared its main distinction with the conventional gears speed reducer be exactly to adopt the bearing unit of said structure to carry out supporting shaft, it mainly comprises casing 5, transmission shaft 6, drive bevel gear 7 and driven bevel pinion 8, described transmission shaft 6 is arranged on casing 5 by above-mentioned bearing unit, is fitted with stopping lock jack panel 9 on the outside transmission shaft 6 of described bearing unit.
Can also adopt following technical measures in said structure:
Described stopping lock jack panel can adopt traditional locking nut with floor clip, also can adopt improved abnormally-structured, special-shaped stopping lock jack panel after improvement mainly comprises nut body 9-1, described nut body 9-1 spiral shell is contained on described transmission shaft 6, the outside one of nut body 9-1 is processed with distortion neck ring 9-2, the outer end of described distortion neck ring 9-2 extends to the keyway 6-1 place of described transmission shaft 6, and described distortion neck ring can make it local deformation embedding splined driveshaft groove by external force and realize retaining locking.
In said structure, in order to prevent the oil seepage of bearing unit cylindrical and casing cooperation place box house, seal ring 10 is installed between the excircle of described bearing unit and casing, described seal ring adopts circumferential sealing or angle sealing.
In sum, the utility model not only carries out overall simplification to the local assembly structure that is comprised of various parts, and whole performance more further optimizes, and has as follows:
1, two bearings are made the bearing unit of disjunctor form, guaranteed that the play of active conical tooth wheel support bearing is stable, the stability when having improved bevel gear work.
2, change traditional Shim and repeatedly adjusted the assembly method that obtains bearing clearance, the inner play of bearing unit is controlled by Bearing Factory is accurate, omitted the play adjustment, manufacturability and the reliability of speed reducer assembling have greatly been improved, reduce numerous and diverse process flow of original when assembling, improved manufacturing efficiency.
3, overcome original structure and be difficult to control the pretightening force illusion that causes, stability and the conformity of control bearing clearance that can be good because of a plurality of part accumulated errors.
4, the closed autonomous grease lubrication form of bearing unit, in the time of can significantly reducing speed reducer work, the temperature rise of box house lubricant oil, make wear-resistant media stabilize work in lubricant oil, stops the premature wear of the gear pair flank of tooth, improves the life-span of gear.
5, increased in limited space bearing to drive sprocket axle to bearing length, improved the radial stability of driving shaft.For example existing bearings length is 63mm, as Fig. 5; Adopting the bearing length of this bearing unit is 84mm, as Fig. 2.
In addition, the utility model also has the advantages such as compact structure, lightweight, load bearing capacity are large, low noise, is used for the gear reduction unit of this bearing unit, improved gear reduction performance quality, improve working life.
The above is only preferred embodiment of the present utility model, is not to limit practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modify, all fall into technical scope of the present utility model.
Claims (8)
1. bearing unit that is used for supporting shaft, this bearing unit comprises inner ring, outer ring, sealing component and tapered roller, it is characterized in that: described tapered roller adopts two groups, lay respectively between inner ring and outer ring, described inner ring adopts Split type structure, integral structure is adopted in described outer ring, is provided with sealing component between described outer ring and inner ring.
2. the bearing unit for supporting shaft according to claim 1, it is characterized in that: the difference in internal diameters between described two inner rings is not more than 0.006mm.
3. the bearing unit for supporting shaft according to claim 1, is characterized in that: fill lubricant grease between described inner ring and outer ring.
4. the bearing unit for supporting shaft according to claim 1, it is characterized in that: described sealing component radially is inlaid between inner ring and outer ring, and is axially concordant with end face.
5. gear reduction unit, mainly comprise casing, transmission shaft, drive bevel gear and driven bevel pinion, it is characterized in that: described transmission shaft is arranged on casing by the arbitrary described bearing unit of the claims 1 ~ 4, is fitted with the stopping lock jack panel on the outside transmission shaft of described bearing unit.
6. gear reduction unit according to claim 5, it is characterized in that: described stopping lock jack panel adopts abnormally-structured, mainly comprise nut body, described nut body by thread set on described transmission shaft, the outside one of nut body is processed with the distortion neck ring, and described distortion neck ring can make it local deformation embedding splined driveshaft groove by external force and realize retaining locking.
7. gear reduction unit according to claim 5, is characterized in that: between the excircle of described bearing unit and casing, seal ring is installed.
8. gear reduction unit according to claim 7, is characterized in that: described seal ring employing circumferential sealing or angle sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206776737U CN202937629U (en) | 2012-12-07 | 2012-12-07 | Bearing unit used for supporting transmission shaft and gear reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206776737U CN202937629U (en) | 2012-12-07 | 2012-12-07 | Bearing unit used for supporting transmission shaft and gear reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937629U true CN202937629U (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206776737U Expired - Fee Related CN202937629U (en) | 2012-12-07 | 2012-12-07 | Bearing unit used for supporting transmission shaft and gear reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937629U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996630A (en) * | 2012-12-07 | 2013-03-27 | 天津市华业荣成精密机械有限公司 | Bearing unit for supporting transmission shaft and gear reducer |
| CN103470736A (en) * | 2013-09-18 | 2013-12-25 | 江国辉 | Axial locking device |
| CN106837993A (en) * | 2017-03-06 | 2017-06-13 | 广西汽车集团有限公司 | A kind of chain and its directive wheel |
| WO2021042467A1 (en) * | 2019-09-03 | 2021-03-11 | 精进电动科技股份有限公司 | Fixing structure for auxiliary bearing of electric drive assembly, and electric drive assembly |
| CN114046338A (en) * | 2021-11-19 | 2022-02-15 | 武汉船用机械有限责任公司 | Spline connection structure of full-rotation rudder propeller transmission chain |
-
2012
- 2012-12-07 CN CN2012206776737U patent/CN202937629U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996630A (en) * | 2012-12-07 | 2013-03-27 | 天津市华业荣成精密机械有限公司 | Bearing unit for supporting transmission shaft and gear reducer |
| CN103470736A (en) * | 2013-09-18 | 2013-12-25 | 江国辉 | Axial locking device |
| CN106837993A (en) * | 2017-03-06 | 2017-06-13 | 广西汽车集团有限公司 | A kind of chain and its directive wheel |
| WO2021042467A1 (en) * | 2019-09-03 | 2021-03-11 | 精进电动科技股份有限公司 | Fixing structure for auxiliary bearing of electric drive assembly, and electric drive assembly |
| CN114046338A (en) * | 2021-11-19 | 2022-02-15 | 武汉船用机械有限责任公司 | Spline connection structure of full-rotation rudder propeller transmission chain |
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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: 20130515 Termination date: 20161207 |