CN204553552U - A kind of three-row roller turntable bearing with axial pretightening - Google Patents
A kind of three-row roller turntable bearing with axial pretightening Download PDFInfo
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- CN204553552U CN204553552U CN201520134083.3U CN201520134083U CN204553552U CN 204553552 U CN204553552 U CN 204553552U CN 201520134083 U CN201520134083 U CN 201520134083U CN 204553552 U CN204553552 U CN 204553552U
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Abstract
The utility model relates to a kind of three-row roller turntable bearing with axial pretightening, comprise outer ring, inner ring, rolling element and retainer, inner ring comprises superposed first inner ring and is positioned at the second inner ring of bottom, rolling element comprises radial roller, first thrust roller and the second thrust roller, the roller surface that described second inner ring contacts with the second thrust roller has annular groove, bottom even along groove in annular groove offers multiple blind hole, in blind hole, spring is installed, the raceway plate that can carry the second thrust roller is embedded with in described annular groove, the surface that raceway plate contacts with the second thrust roller has quench-hardened case, the lower end of raceway plate is fixedly connected with spring.Three-row roller turntable bearing of the present utility model, the structure of carrying out axial pretightening for thrust roller is increased at Bearing inner, eliminate the play between the thrust roller of three-row roller turntable bearing and roller surface, prevent the bearing length time be in vibrating state and cause roller to the damage in roller-way face.
Description
Technical field
The utility model relates to extra large size bearing technical field, is specifically related to a kind of three-row roller turntable bearing with axial pretightening.
Background technique
At present, in heavy-duty machinery technical field, bearing is the core of this equipment, because it is except having supporting pole heavy load revolute function, also to bear great tilting moment, to adapt to the transhipment of remote heavily loaded goods, three-row roller turntable bearing is because of its stronger bearing capacity in extensive use and large lifting equipment, three-row roller turntable bearing can bear larger axial load simultaneously, the load such as radial load and tilting moment, working environment residing for large lifting equipment is all comparatively severe, make three-row roller rotating disk often can be in vibrating state, owing to there is play between thrust roller and roller surface, when being in vibrating state for a long time, easily damage is caused to roller surface.
Model utility content
The purpose of this utility model is the deficiency for solving the problems of the technologies described above, a kind of three-row roller turntable bearing with axial pretightening is provided, Bearing inner has the structure of thrust roller being carried out to axial pretightening, eliminate the play between the thrust roller of three-row roller turntable bearing and roller surface, prevent the bearing length time be in vibrating state and cause roller to the damage in roller-way face.
The utility model is the deficiency solved the problems of the technologies described above, the technological scheme adopted is: a kind of three-row roller turntable bearing with axial pretightening, comprise outer ring, inner ring, rolling element and retainer, inner ring comprises superposed first inner ring and is positioned at the second inner ring of bottom, rolling element comprises radial roller, first thrust roller and the second thrust roller, described outer ring has a ring-shaped step, two annular table terraces of ring-shaped step form the first thrust roller raceway and the second thrust roller raceway with superposed first inner ring and the second inner ring being positioned at bottom respectively, single lip sealing ring is provided with between described first inner ring and outer ring and between the second inner ring and outer ring, the roller surface that described second inner ring contacts with the second thrust roller has annular groove, bottom even along groove in annular groove offers multiple blind hole, in blind hole, spring is installed, the raceway plate that can carry the second thrust roller is embedded with in described annular groove, the surface that raceway plate contacts with the second thrust roller has quench-hardened case, the lower end of raceway plate is fixedly connected with spring.
The conveniently installation of bearing, be fixedly connected with one end at described raceway plate with spring and be also provided with pretension bolt hole, before installation, be connected with raceway plate through the second inner ring by pretension bolt, by pretension bolt by raceway plate toward drop-down, spring is made to be in compressive state, the roller surface of raceway plate and the second inner ring maintains an equal level, and then carries out the installation combination of bearing, installs after terminating, taking down pretension bolt makes spring be in compressive state all the time, and raceway plate is subject to the pretightening force of spring all the time.
Because the working environment of large lifting equipment is usually comparatively severe; existing bearing only has single sealing configuration; cannot effectively in the face of the outside foreign material invasion such as large particle dust, iron scale is collected near sealing configuration; thus reduce the working life of bearing; improve the user cost of user, reduce oiling agent consumption.In order to solve the problem, the utility model is provided with dust-proof cover at single lip sealing ring place of roller turntable bearing, dust-proof cover is made up of the outer outlet body be fixed on outer ring and the dust retaining ring be fixed on inner ring, described outer outlet body is located at the outside of seal ring, one end of outer outlet body is fixed on outer ring, another dust-break end of outer outlet body and inner ring outer surface have gap, and described dust retaining ring is arranged in outer outlet body, and dust retaining ring to be fixed on inner ring and to have gap between the exterior edge face of dust retaining ring and outer outlet body.Described dust retaining ring is connected with the installing ring for being fixed on inner ring, and one end of installing ring is located on inner ring by clamping bolt fixed cover, and the other end of installing ring stretches into from the gap between outer outlet body with inner ring and is fixedly connected with dust retaining ring.The ring body of dust retaining ring is arranged perpendicular to the axis of outer ring, and the dust-break end of outer outlet body and the ring body of dust retaining ring are parallel to each other.
beneficial effect
1, three-row roller turntable bearing of the present utility model, the structure of carrying out axial pretightening for thrust roller is increased at Bearing inner, eliminate the play between the thrust roller of three-row roller turntable bearing and roller surface, prevent the bearing length time be in vibrating state and cause roller to the damage in roller-way face.
2, three-row roller turntable bearing of the present utility model has dust-proof cover, and dust-proof cover is arranged on seal ring outside, and dust-proof cover can effectively prevent large particle dust and other impurities from destroying the sealing mechanism of bearing, thus improves the working life of bearing.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model three-row roller turntable bearing;
Fig. 2 is the partial structurtes schematic diagram at the utility model three-row roller turntable bearing raceway plate place;
Fig. 3 is the structural representation of the dust-proof cover of the utility model three-row roller turntable bearing;
Mark in figure: 1, outer ring, the 2, first inner ring, the 3, second inner ring, 4, radial roller, the 5, first thrust roller, the 6, second thrust roller, 7, annular groove, 8, spring, 9, raceway plate, 10, pretension bolt hole, 11, single lip sealing ring, 12, outer outlet body, 13, dust retaining ring, 14, installing ring.
Embodiment
As shown in the figure: a kind of three-row roller turntable bearing with axial pretightening, comprise outer ring 1, inner ring, rolling element and retainer, inner ring comprises superposed first inner ring 2 and is positioned at the second inner ring 3 of bottom, rolling element comprises radial roller 4, first thrust roller 5 and the second thrust roller 6, described outer ring 1 has a ring-shaped step, two annular table terraces of ring-shaped step form the first thrust roller 5 raceway and the second thrust roller 6 raceway with superposed first inner ring 2 with the second inner ring 3 being positioned at bottom respectively, single lip sealing ring 11 is provided with between described first inner ring 2 and outer ring 1 and between the second inner ring 3 and outer ring 1, the roller surface that described second inner ring 3 contacts with the second thrust roller 6 has annular groove 7, bottom even along groove in annular groove 7 offers multiple blind hole, spring 8 is installed in blind hole, the raceway plate 9 that can carry the second thrust roller 6 is embedded with in described annular groove 7, the surface that raceway plate 9 contacts with the second thrust roller 6 has quench-hardened case, the lower end of raceway plate 9 is fixedly connected with spring 8.
The conveniently installation of bearing, be fixedly connected with one end at described raceway plate 9 with spring 8 and be also provided with pretension bolt hole 10, before installation, be connected with raceway plate 9 through the second inner ring 3 by pretension bolt, by pretension bolt by raceway plate 9 toward drop-down, spring 8 is made to be in compressive state, the roller surface of raceway plate 9 and the second inner ring 3 maintains an equal level, and then carries out the installation combination of bearing, installs after terminating, taking down pretension bolt makes spring 8 be in compressive state all the time, and raceway plate 9 is subject to the pretightening force of spring 8 all the time.
Because the working environment of large lifting equipment is usually comparatively severe; existing bearing only has single sealing configuration; cannot effectively in the face of the outside foreign material invasion such as large particle dust, iron scale is collected near sealing configuration; thus reduce the working life of bearing; improve the user cost of user, reduce oiling agent consumption.In order to solve the problem, the utility model is provided with dust-proof cover at single lip sealing ring 11 place of roller turntable bearing, dust-proof cover is made up of the outer outlet body 12 be fixed on outer ring 1 and the dust retaining ring 13 be fixed on inner ring, described outer outlet body 12 is located at the outside of seal ring, one end of outer outlet body 12 is fixed on outer ring 1, another dust-break end of outer outlet body 12 and inner ring outer surface have gap, described dust retaining ring 13 is arranged in outer outlet body 12, and dust retaining ring 13 to be fixed on inner ring and to have gap between the exterior edge face of dust retaining ring 13 and outer outlet body 12.Described dust retaining ring 13 is connected with the installing ring 14 for being fixed on inner ring, one end of installing ring 14 is located on inner ring by clamping bolt fixed cover, and the other end of installing ring 14 to stretch into the gap between inner ring from outer outlet body 12 and is fixedly connected with dust retaining ring 13.The ring body of dust retaining ring 13 is arranged perpendicular to the axis of outer ring 1, and the dust-break end of outer outlet body 12 and the ring body of dust retaining ring 13 are parallel to each other.
Three-row roller turntable bearing of the present utility model, the structure of carrying out axial pretightening for thrust roller is increased at Bearing inner, eliminate the play between the thrust roller of three-row roller turntable bearing and roller surface, prevent the bearing length time be in vibrating state and cause roller to the damage in roller-way face.
Claims (6)
1. the three-row roller turntable bearing with axial pretightening, comprise outer ring (1), inner ring, rolling element and retainer, inner ring comprises superposed first inner ring (2) and is positioned at second inner ring (3) of bottom, rolling element comprises radial roller (4), first thrust roller (5) and the second thrust roller (6), single lip sealing ring (11) is provided with between described first inner ring (2) and outer ring (1) and between the second inner ring (3) and outer ring (1), it is characterized in that: the roller surface that described second inner ring (3) contacts with the second thrust roller (6) has annular groove (7), bottom even along groove in annular groove (7) offers multiple blind hole, spring (8) is installed in blind hole, the raceway plate (9) that can carry the second thrust roller (6) is embedded with in described annular groove (7), the lower end of raceway plate (9) is fixedly connected with spring (8).
2. a kind of three-row roller turntable bearing with axial pretightening as claimed in claim 1, is characterized in that: the surface that described raceway plate (9) contacts with the second thrust roller (6) has quench-hardened case.
3. a kind of three-row roller turntable bearing with axial pretightening as claimed in claim 1, is characterized in that: described raceway plate (9) is fixedly connected with one end with spring (8) and is also provided with pretension bolt hole (10).
4. a kind of three-row roller turntable bearing with axial pretightening as claimed in claim 1, it is characterized in that: single lip sealing ring (11) place of described roller turntable bearing is provided with dust-proof cover, dust-proof cover is made up of the outer outlet body (12) be fixed on outer ring (1) and the dust retaining ring (13) be fixed on inner ring, described outer outlet body (12) is located at the outside of seal ring, one end of outer outlet body (12) is fixed on outer ring (1), another dust-break end of outer outlet body (12) and inner ring outer surface have gap, described dust retaining ring (13) is arranged in outer outlet body (12), dust retaining ring (13) to be fixed on inner ring and to have gap between the exterior edge face of dust retaining ring (13) and outer outlet body (12).
5. a kind of three-row roller turntable bearing with axial pretightening as claimed in claim 4, it is characterized in that: described dust retaining ring (13) is connected with the installing ring (14) for being fixed on inner ring, one end of installing ring (14) is located on inner ring by clamping bolt fixed cover, and the other end of installing ring (14) to stretch into the gap between inner ring from outer outlet body (12) and is fixedly connected with dust retaining ring (13).
6. a kind of three-row roller turntable bearing with axial pretightening as claimed in claim 4, it is characterized in that: the ring body of described dust retaining ring (13) is arranged perpendicular to the axis of outer ring (1), and the dust-break end of outer outlet body (12) and the ring body of dust retaining ring (13) are parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520134083.3U CN204553552U (en) | 2015-03-10 | 2015-03-10 | A kind of three-row roller turntable bearing with axial pretightening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520134083.3U CN204553552U (en) | 2015-03-10 | 2015-03-10 | A kind of three-row roller turntable bearing with axial pretightening |
Publications (1)
| Publication Number | Publication Date |
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| CN204553552U true CN204553552U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520134083.3U Active CN204553552U (en) | 2015-03-10 | 2015-03-10 | A kind of three-row roller turntable bearing with axial pretightening |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632883A (en) * | 2015-03-10 | 2015-05-20 | 洛阳新强联回转支承股份有限公司 | Three-row-roller type turntable bearing with axial pre-compression structure |
| CN107575482A (en) * | 2016-06-08 | 2018-01-12 | 斯凯孚公司 | Revolution roller bearing with sealing arrangement |
| CN109340254A (en) * | 2018-12-14 | 2019-02-15 | 徐工集团凯宫重工南京股份有限公司 | Shield machine gear ring and the detachable main drive shaft of raceway are held |
| CN109751338A (en) * | 2017-11-08 | 2019-05-14 | 斯凯孚公司 | Support the bearing of the radial deformation of roller bearing and the rotary components including the bearing |
| CN110388378A (en) * | 2018-04-20 | 2019-10-29 | 斯凯孚公司 | Support the bearing of the radial deformation of roller bearing and the rotary components including the bearing |
| CN111734735A (en) * | 2020-07-03 | 2020-10-02 | 中国铁建重工集团股份有限公司 | Outer ring of main bearing of tunneling machine and main bearing of tunneling machine |
| CN111749981A (en) * | 2020-07-03 | 2020-10-09 | 中国铁建重工集团股份有限公司 | Shield constructs owner bearing and outer lane thereof |
| CN113202860A (en) * | 2021-05-08 | 2021-08-03 | 洛阳新强联回转支承股份有限公司 | Three-row cylindrical roller wind power main shaft bearing with convex end surface and double-row rollers |
| CN114473413A (en) * | 2022-01-25 | 2022-05-13 | 中国铁建重工集团股份有限公司 | Oil cylinder constant-pressure pre-tightening device and method for main bearing of tunneling machine |
| CN114776713A (en) * | 2022-04-08 | 2022-07-22 | 洛阳轴承研究所有限公司 | Shield machine main bearing, shield machine main bearing outer ring and machining method thereof |
| CN114857168A (en) * | 2022-05-11 | 2022-08-05 | 中铁工程装备集团有限公司 | Main bearing of heading machine |
-
2015
- 2015-03-10 CN CN201520134083.3U patent/CN204553552U/en active Active
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632883A (en) * | 2015-03-10 | 2015-05-20 | 洛阳新强联回转支承股份有限公司 | Three-row-roller type turntable bearing with axial pre-compression structure |
| AU2017202100B2 (en) * | 2016-06-08 | 2022-06-16 | Aktiebolaget Skf | Slewing roller bearing with sealing arrangement |
| CN107575482A (en) * | 2016-06-08 | 2018-01-12 | 斯凯孚公司 | Revolution roller bearing with sealing arrangement |
| CN107575482B (en) * | 2016-06-08 | 2020-07-03 | 斯凯孚公司 | Rotary roller bearing with sealing arrangement |
| CN109751338A (en) * | 2017-11-08 | 2019-05-14 | 斯凯孚公司 | Support the bearing of the radial deformation of roller bearing and the rotary components including the bearing |
| CN109751338B (en) * | 2017-11-08 | 2022-01-04 | 斯凯孚公司 | Bearing supporting radial deformation of roller bearing and rotating assembly comprising same |
| CN110388378A (en) * | 2018-04-20 | 2019-10-29 | 斯凯孚公司 | Support the bearing of the radial deformation of roller bearing and the rotary components including the bearing |
| CN109340254A (en) * | 2018-12-14 | 2019-02-15 | 徐工集团凯宫重工南京股份有限公司 | Shield machine gear ring and the detachable main drive shaft of raceway are held |
| CN109340254B (en) * | 2018-12-14 | 2024-03-22 | 徐工集团凯宫重工南京股份有限公司 | Main driving bearing for shield machine |
| CN111734735A (en) * | 2020-07-03 | 2020-10-02 | 中国铁建重工集团股份有限公司 | Outer ring of main bearing of tunneling machine and main bearing of tunneling machine |
| CN111749981A (en) * | 2020-07-03 | 2020-10-09 | 中国铁建重工集团股份有限公司 | Shield constructs owner bearing and outer lane thereof |
| CN113202860A (en) * | 2021-05-08 | 2021-08-03 | 洛阳新强联回转支承股份有限公司 | Three-row cylindrical roller wind power main shaft bearing with convex end surface and double-row rollers |
| CN114473413A (en) * | 2022-01-25 | 2022-05-13 | 中国铁建重工集团股份有限公司 | Oil cylinder constant-pressure pre-tightening device and method for main bearing of tunneling machine |
| CN114776713A (en) * | 2022-04-08 | 2022-07-22 | 洛阳轴承研究所有限公司 | Shield machine main bearing, shield machine main bearing outer ring and machining method thereof |
| CN114857168A (en) * | 2022-05-11 | 2022-08-05 | 中铁工程装备集团有限公司 | Main bearing of heading machine |
| CN114857168B (en) * | 2022-05-11 | 2024-01-05 | 中铁工程装备集团有限公司 | Main bearing of heading machine |
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