CN214788567U - External tooth double-raceway mixed rolling body type slewing bearing - Google Patents
External tooth double-raceway mixed rolling body type slewing bearing Download PDFInfo
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- CN214788567U CN214788567U CN202121051177.6U CN202121051177U CN214788567U CN 214788567 U CN214788567 U CN 214788567U CN 202121051177 U CN202121051177 U CN 202121051177U CN 214788567 U CN214788567 U CN 214788567U
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- middle ring
- cylindrical roller
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Abstract
The utility model discloses an external tooth double-raceway mixed rolling body type slewing bearing, which comprises a toothed outer ring and a middle ring, wherein the toothed outer ring is arranged outside the whole device; the cylindrical roller bearing is arranged between the outer ring with the teeth and the middle ring; and the steel ball is arranged between the inner ring and the middle ring, and a brass retainer is fixed between the inner ring and the middle ring. The external tooth double-raceway mixed rolling body type slewing bearing comprises a toothed outer ring, an inner ring, a middle ring, a cylindrical roller bearing, a steel ball, a brass retainer and a spacer block, wherein the cylindrical roller bearing with a cross structure is arranged between the toothed outer ring and the middle ring, so that the bearing play is small, the operation is stable, the accurate positioning is stronger, the offset error is small, the loads in all directions such as larger radial load, axial load, moment load and the like can be borne, and the steel ball with a four-point contact ball bearing structure is arranged to meet the requirement of high-speed rotation of the inner ring.
Description
Technical Field
The utility model relates to a bearing technical field specifically is a two raceway of external tooth mix roll style slewing bearing.
Background
The slewing bearing is one of bearings, is commonly used as a slewing component in various occasions, is a partial bidirectional slewing bearing, and not only needs to meet the requirements of higher accurate positioning of an outer ring (end jump is less than 0.05 and play is less than 0), smaller offset error and the numerical value that the rotating speed of an inner ring reaches a high speed (50 r/min), but also needs to bear larger load. However, the conventional slewing bearing has the following problems in use;
the slewing bearing of current conventional structure, simple slewing bearing structure is inconvenient to inside accurate the accuse, leads to appearing the error, influences holistic use, and the four-point contact ball formula slewing bearing of current conventional structure simultaneously, because the inner circle rotational speed requirement is higher, it can't match the satisfaction.
In order to solve the problems, innovative design is urgently needed on the basis of the original slewing bearing.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a two raceway of external tooth mix roll style slewing bearing to solve above-mentioned background art and propose current slewing bearing, inconvenient carry out accurate the accuse to inside, can't match the problem of the high requirement rotational speed of inner circle simultaneously.
In order to achieve the above object, the utility model provides a following technical scheme: an external tooth double-raceway hybrid roller body type slewing bearing, comprising:
the toothed outer ring is arranged outside the whole device, one side of the toothed outer ring is connected with a middle ring, and one side of the middle ring, which is far away from the toothed outer ring, is provided with an inner ring;
the cylindrical roller bearing is arranged between the outer ring with the teeth and the middle ring;
and the steel ball is arranged between the inner ring and the middle ring, and a brass retainer is fixed between the inner ring and the middle ring.
Preferably, sealing strips are used for sealing between the outer ring and the middle ring with teeth and between the middle ring and the inner ring with teeth, the sealing strips are combined to form the bidirectional slewing bearing, the sealing is kept integrally through the use of the sealing strips, and the leakage of internal lubricating oil is avoided.
Preferably, the cylindrical roller bearing between the outer ring and the middle ring with teeth is designed in a crossed cylindrical roller structure, the crossed cylindrical roller structure is used, the bearing play is small, the operation is stable, the accurate positioning is stronger, the offset error is almost zero, meanwhile, the stress distribution of the inner structure is very special, the deformation resistance is super strong, and the cylindrical roller bearing can bear loads in all directions such as large radial load, axial load, moment load and the like.
Preferably, the steel ball between the inner ring and the middle ring is designed into a four-point contact ball bearing structure, the limit rotating speed of the four-point contact ball bearing is high, the four-point contact ball bearing is suitable for high rotating speed occasions, and the requirement of the inner ring on high rotating speed can be met by selecting the four-point contact ball bearing.
Preferably, the rollers are arranged in a 90-degree mutually perpendicular and crossed manner in the internal structure of the cylindrical roller bearing, and the isolating blocks are arranged between the rollers in the cylindrical roller bearing in a staggered manner, so that the rollers can be prevented from inclining, a proper distance is kept between the rolling bodies, and the adjacent rolling bodies are prevented from being in direct contact, so that the friction and the heat generation are kept at the lowest level, the increase of the rotation torque is effectively prevented, the crossed roller bearing can bear loads in all directions such as a larger radial load, an axial load and a moment load, and in addition, one-side contact phenomenon or locking phenomenon of the rollers can not occur.
Compared with the prior art, the beneficial effects of the utility model are that: the external tooth double-raceway mixed rolling body type slewing bearing;
the cylindrical roller bearing arranged between the toothed outer ring and the middle ring is designed into a crossed cylindrical roller structure, and the bearing clearance is reduced through the structural characteristics of the crossed cylindrical roller, so that the whole operation is stable, the precision is improved, the offset error is reduced, the deformation resistance is improved, and larger radial load can be borne;
the steel ball arranged between the inner ring and the middle ring is of a four-point contact ball bearing structure, so that the device can bear higher limit rotating speed, the applicability of the device is improved, meanwhile, the sealing strips used between the toothed outer ring and the middle ring and between the toothed middle ring and the inner ring can increase internal sealing, and internal lubricating oil leakage is effectively prevented.
Drawings
FIG. 1 is a schematic view of a front cross-sectional structure of the present invention;
FIG. 2 is a schematic side view of the outer ring with teeth of the present invention;
FIG. 3 is a schematic view of the side mounting structure of the cylindrical roller bearing of the present invention;
fig. 4 is a schematic view of the side mounting structure of the steel ball of the present invention.
In the figure: 01. an outer ring with teeth; 02. an inner ring; 03. a middle ring; 04. a cylindrical roller bearing; 05. a steel ball; 06. a brass retainer; 07. and isolating the blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: an external tooth double-raceway mixed rolling body type slewing bearing comprises an outer ring 01 with teeth, an inner ring 02, a middle ring 03, a cylindrical roller bearing 04, a steel ball 05, a brass retainer 06 and an isolation block 07;
the device comprises a toothed outer ring 01 arranged outside the whole device, wherein one side of the toothed outer ring 01 is connected with a middle ring 03, and one side of the middle ring 03, which is far away from the toothed outer ring 01, is provided with an inner ring 02;
the cylindrical roller bearing 04 is arranged between the toothed outer ring 01 and the middle ring 03;
and a steel ball 05 mounted between the inner ring 02 and the middle ring 03, and a brass retainer 06 is fixed between the inner ring 02 and the middle ring 03.
Sealing strips are used for sealing between the outer ring 01 with teeth and the middle ring 03 and between the middle ring 03 and the inner ring 02, and the sealing strips are combined to form a bidirectional slewing bearing;
as shown in fig. 1-4, the sealing strips used between the toothed outer ring 01 and the middle ring 03 and between the middle ring 03 and the inner ring 02 can keep the whole sealing, effectively avoid the leakage of the internal lubricating oil and improve the continuous use capability;
the cylindrical roller bearing 04 between the outer ring 01 with teeth and the middle ring 03 is designed to be a crossed cylindrical roller structure, the internal structure of the cylindrical roller bearing 04 adopts the mutually perpendicular crossed arrangement of rollers at 90 degrees, and the rollers in the cylindrical roller bearing 04 are provided with isolating blocks 07 in a staggered manner;
as shown in fig. 1 to 3, the cylindrical roller bearing 04 of the cross type cylindrical roller structure can prevent the inclination of the rollers, keep a proper distance between the rolling bodies, prevent the adjacent rolling bodies from directly contacting, so as to keep friction and heat generation at a minimum level, effectively prevent the increase of the rotational torque, enable the cross roller bearing to bear loads in all directions such as a large radial load, an axial load and a moment load, and in addition, prevent one side of the rollers from contacting or locking; meanwhile, because the inner ring and the outer ring of the standard type crossed roller bearing are of a split structure, the gap can be adjusted, and high-precision rotary motion can be obtained even if pressure is applied, and because the crossed cylindrical roller structure is very special in stress distribution, ultra-strong in deformation resistance and almost zero in offset error, the integral use strength is improved;
a steel ball 05 between the inner ring 02 and the middle ring 03 is designed into a four-point contact ball bearing structure;
as shown in fig. 1 and 4, the requirement of the inner ring 02 on the precision is low, but the requirement on the rotating speed is certain, and the four-point contact ball bearing is high in limit rotating speed and is relatively suitable for high rotating speed occasions, so that the steel ball 05 is selected as the rolling element of the inner ring 02, and the brass in the brass retainer 06 has the advantages of high tensile strength, relatively low density, high limit rotating speed and the like, so that the brass retainer 06 is selected to separate the rolling element, and after the middle ring 03 is fixed, the designed slewing bearing can meet the requirements of high precision and low error of the outer ring, can also meet the requirement of high rotating speed of the inner ring 02, and can meet the operation requirement used in such working environments.
The working principle is as follows: when the external-tooth double-raceway mixed rolling body type slewing bearing is used, as shown in fig. 1-4, firstly, the cylindrical roller bearing 04 is installed between the toothed outer ring 01 and the middle ring 03, the steel ball 05 and the brass retainer 06 are installed between the inner ring 02 and the middle ring 03, the toothed outer ring 01, the middle ring 03 and the inner ring 02 are hermetically installed through the sealing strips, the cylindrical roller bearing 04 is matched with the isolation blocks 07 in the cylindrical roller bearing, so that the internal accuracy is improved, the load bearing capacity is increased, and the adaptability of the inner ring 02 to the limit rotating speed is improved through the use of the steel ball 05.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a two raceways of external tooth mix roll style slewing bearing which characterized in that: comprises the following steps of;
the device comprises a toothed outer ring (01) arranged outside the whole device, wherein one side of the toothed outer ring (01) is connected with a middle ring (03), and one side, far away from the toothed outer ring (01), of the middle ring (03) is provided with an inner ring (02);
the cylindrical roller bearing (04) is arranged between the toothed outer ring (01) and the middle ring (03);
the steel ball (05) is arranged between the inner ring (02) and the middle ring (03), and a brass retainer (06) is fixed between the inner ring (02) and the middle ring (03).
2. The external-tooth double-raceway hybrid rolling element type slewing bearing according to claim 1, wherein: sealing strips are used for sealing between the outer ring (01) with teeth and the middle ring (03) and between the middle ring (03) and the inner ring (02) with teeth, and the sealing strips are combined to form the bidirectional slewing bearing.
3. The external-tooth double-raceway hybrid rolling element type slewing bearing according to claim 1, wherein: the cylindrical roller bearing (04) between the toothed outer ring (01) and the middle ring (03) is designed in a crossed cylindrical roller structure.
4. The external-tooth double-raceway hybrid rolling element type slewing bearing according to claim 1, wherein: and the steel ball (05) between the inner ring (02) and the middle ring (03) is designed into a four-point contact ball bearing structure.
5. The external-tooth double-raceway hybrid rolling element type slewing bearing according to claim 1, wherein: the inner structure of the cylindrical roller bearing (04) adopts rollers which are arranged in a 90-degree mutually perpendicular and crossed manner, and isolating blocks (07) are arranged between the rollers in the cylindrical roller bearing (04) in a staggered manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121051177.6U CN214788567U (en) | 2021-05-17 | 2021-05-17 | External tooth double-raceway mixed rolling body type slewing bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121051177.6U CN214788567U (en) | 2021-05-17 | 2021-05-17 | External tooth double-raceway mixed rolling body type slewing bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214788567U true CN214788567U (en) | 2021-11-19 |
Family
ID=78694319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121051177.6U Active CN214788567U (en) | 2021-05-17 | 2021-05-17 | External tooth double-raceway mixed rolling body type slewing bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214788567U (en) |
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2021
- 2021-05-17 CN CN202121051177.6U patent/CN214788567U/en active Active
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