CN211574027U - Double-rotation inner ring and outer tooth slewing bearing for blockage removing machine - Google Patents
Double-rotation inner ring and outer tooth slewing bearing for blockage removing machine Download PDFInfo
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- CN211574027U CN211574027U CN201922403130.0U CN201922403130U CN211574027U CN 211574027 U CN211574027 U CN 211574027U CN 201922403130 U CN201922403130 U CN 201922403130U CN 211574027 U CN211574027 U CN 211574027U
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- outer ring
- ball
- slewing bearing
- outer lane
- ring
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Abstract
The utility model discloses a clear stifled machine double-rotary inner circle external tooth slewing bearing, including inner circle, outer lane and ball, be provided with the raceway between the interior week looks of outer lane and the periphery looks of inner circle, the outer lane includes outer lane and lower outer lane, go up outer lane and outer lane about slewing bearing's thickness direction's axis an symmetry down, ball evenly distributed is in the ball inslot of raceway between last outer lane and inner circle and the raceway between lower outer lane and the inner circle, two upper and lower balls constitute double-rotary slewing bearing, the inner circle inner wall still is provided with the round pin axle slot that is used for connecting pin axle, round pin axle slot surface is provided with the bolt hole that is used for installing connecting bolt. The ball and the isolation block of the utility model can be directly plugged into the upper and lower raceways, and the diameters of the upper and lower rows of balls are the same according to the stress condition, so the open assembly is very convenient, and can bear large axial force and tipping moment; the double-row ball type slewing bearing has larger axial and radial sizes and a tight structure.
Description
Technical Field
The utility model relates to a slewing bearing technical field especially relates to a clear stifled machine of turning round inner circle external tooth slewing bearing.
Background
The turntable bearing is a large-scale rolling bearing with a special structure, which can bear combined loads such as axial load, radial load, overturning moment and the like, has high load capacity, and integrates multiple functions of supporting, rotating, transmitting, fixing and the like. The rolling bearing of the turntable bearing has the great characteristic of bearing large eccentric load (namely overturning moment) in comparison with a rolling bearing in a general sense, and the bearing capacity has a great relation with the eccentricity of the load. Most of the slewing bearings are structurally provided with mounting holes, lubricating holes and sealing devices, so that the slewing bearing has the characteristics of compact structure, simplicity in mounting, convenience in maintenance and the like.
The slewing bearing in the prior art has the types of single-row four-point contact ball type slewing bearing, double-row reducing ball type slewing bearing, single-row cross roller type slewing bearing, three-row roller type slewing bearing, single-row four-point contact ball type slewing bearing and the like, the single-row slewing bearing can bear weaker axial force and tipping moment, and the slewing bearing cannot be applied to loading and unloading machinery requiring more than medium diameter, and the application range is lower.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a clear stifled machine double-rotary inner circle external tooth slewing bearing.
The utility model adopts the technical proposal that: the utility model provides a clear stifled machine double-rotary inner circle external tooth slewing bearing, includes inner circle, outer lane and ball, be provided with the raceway between the inner peripheral looks surface of outer lane and the outer periphery looks surface of inner circle, the outer lane includes outer lane and lower outer lane, go up outer lane and outer lane about slewing bearing's thickness direction's axis a symmetry down, ball evenly distributed is at the ball inslot of raceway between last outer lane and inner circle and raceway between lower outer lane and the inner circle, two upper and lower balls constitute double-rotary slewing bearing, the inner circle inner wall still is provided with the round pin axle slot that is used for connecting pin axle, round pin axle slot surface is provided with the bolt hole that is used for installing connecting bolt.
Furthermore, a tooth part is arranged between the upper outer ring and the lower outer ring, a protrusion is arranged on the side surface of the inner ring, a groove is arranged at the joint of the side surface of the tooth part and the inner ring, and the protrusion is matched with the groove.
Furthermore, the outer side surfaces of the upper outer ring and the lower outer ring are further provided with plugging holes, the plugging holes transversely penetrate through the upper outer ring and the lower outer ring, the balls are plugged into the ball grooves through the plugging holes, the plugging holes are plugged through plugging, fixing holes which axially penetrate through the surfaces of the upper outer ring and the lower outer ring are further formed in the surfaces of the upper outer ring and the lower outer ring, and the plugging pins are fixedly plugged through the fixing holes.
Furthermore, the upper surface and the lower surface of the upper outer ring and the lower outer ring are provided with axially extending mounting holes, and the mounting holes are 40-50mm deep into the upper outer ring or the lower outer ring.
Furthermore, the mounting holes are uniformly distributed on the outer ring of the slewing bearing for a circle.
Furthermore, the middle part of the ball body of the ball is provided with an arc-shaped strip-shaped isolation block.
Furthermore, the protrusions and the grooves are fixed through connecting bolts, the connecting bolts are fixed in the positioning holes, and the end portions of the connecting bolts plug the cylindrical pins to be fixed.
Furthermore, the positioning hole and the connecting bolt use the axis O of the slewing bearing as a circular point, and the included angle alpha is 10-15 degrees.
Further, sealing belts are arranged on the staggered surfaces between the upper outer ring and the tooth parts and between the lower outer ring and the tooth parts.
Furthermore, the middle parts of the transverse side surfaces of the upper outer ring and the lower outer ring are respectively provided with an oil nozzle, and the roller path and the internal structure can be periodically lubricated through the oil nozzles.
Furthermore, the ball is a steel ball, and the material of the steel ball is GCr 15.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the balls and the isolating blocks can be directly plugged into the upper and lower raceways, and the diameters of the upper and lower rows of balls are the same according to the stress condition.
2. The double-row ball type slewing bearing has larger axial and radial sizes and a tight structure.
3. The method can be applied to loading and unloading machines such as tower cranes, automobile cranes and the like which require more than medium-diameter.
Drawings
Fig. 1 is a schematic structural view of a double-rotation inner ring outer tooth slewing bearing for the blockage removing machine of the utility model;
fig. 2 is a top view of the present invention.
Wherein: 1-inner ring, 2-outer ring, 21-upper outer ring, 22-lower outer ring, 3-ball, 4-raceway, 5-spacer, 6-pin shaft groove, 61-bolt hole, 7-tooth part, 8-connecting bolt, 9-positioning hole, 10-cylindrical pin, 11-bulge, 12-plugging hole, 13-plug, 14-fixing hole, 15-plugging pin, 16-mounting hole, 17-sealing belt and 18-oil nozzle.
Detailed Description
In order to deepen the understanding of the present invention, the present invention is further explained with reference to the drawings and the embodiments, which are only used to explain the present invention and are not limited to the protection scope of the present invention.
As shown in fig. 1 and 2, the double-rotation inner ring and outer tooth slewing bearing for the blockage removing machine comprises an inner ring 1, an outer ring 2 and balls 3, wherein the inner ring 1 and the outer ring 2 are made of 50Mn, the balls 3 are steel balls, the steel balls are made of GCr15, a roller path 4 is arranged between the inner peripheral phase surface of the outer ring 2 and the outer peripheral phase surface of the inner ring 1, the roller path 4 is used for transferring load and realizing the relative rotation of two parts of equipment, and selective quenching treatment is carried out on the surface and a certain depth of the roller path 4, so that high stress generated in the operation of the transfer equipment can be better dispersed; the outer ring 2 comprises an upper outer ring 21 and a lower outer ring 22, the upper outer ring 21 and the lower outer ring 22 are symmetrical about a central axis a in the thickness direction of the slewing bearing, the balls 3 are uniformly distributed in the ball grooves of the roller paths 4 between the upper outer ring 21 and the inner ring 1 and the roller paths 4 between the lower outer ring 22 and the inner ring 1, the upper balls 3 and the lower balls 3 form the double-slewing bearing, the inner wall of the inner ring 1 is further provided with a pin shaft groove 6 for connecting a pin shaft, and the surface of the pin shaft groove 6 is provided with a bolt hole 61 for installing a connecting bolt.
In the above embodiments, the inner ring 1 or the outer ring 2 has a complete transmission structure, such as a gear or a sprocket gear, so that the inner ring and the outer ring of the bearing can relatively rotate against the rotation resistance by using the excellent characteristics of the transmission modes.
In the above embodiment, a tooth portion 7 is arranged between the upper outer ring 21 and the lower outer ring 22, a protrusion 11 is arranged on the side surface of the inner ring 1, a groove is arranged at the connection position of the side surface of the tooth portion 7 and the inner ring 1, the protrusion and the groove are adapted, the protrusion 11 and the groove are fixed by a connecting bolt 8, the connecting bolt 8 is fixed in the positioning hole 9, and the end of the connecting bolt 8 blocks the cylindrical pin 10 to fix.
In the above embodiment, the positioning holes 9 and the connecting bolts 8 use the pivot axis O of the pivoting support as a circular point, the included angle α is 10 to 15 °, the included angle between two adjacent positioning holes 9 is 45 °, two connecting bolts 8 are spaced between two adjacent positioning holes 9, the included angle between two adjacent connecting bolts 8 is 20 to 25 °, and the distance between the positioning hole 9 and the center O of the circle is equal to the distance between the connecting bolt 8 and the center O of the circle.
In the above embodiment, the outer side surfaces of the upper outer ring 21 and the lower outer ring 22 are further provided with plugging holes 12, the plugging holes 12 transversely penetrate through the upper outer ring 21 and the lower outer ring 22, the balls 3 are plugged into the ball grooves through the plugging holes 12, the middle parts of the balls 3 are provided with arc-shaped strip-shaped isolation blocks 5, and the isolation blocks 5 can play roles of reducing friction, preventing slipping and blocking in the bearing rotation process; the plugging holes 12 are plugged through the plugs 13, the fixing holes 14 which axially penetrate through the surfaces of the upper outer ring 21 and the lower outer ring 22 are further formed, the plugging pins 15 fix the plugs 13 through the fixing holes 14, the open structure facilitates the disassembly of the balls 3, and the balls 3 of different sizes can be arranged according to stress conditions.
In the above embodiment, the upper and lower surfaces of the upper outer ring 21 and the lower outer ring 22 are provided with the axially extending mounting holes 16, the mounting holes 16 penetrate into the upper outer ring 21 or the lower outer ring 22 by 40-50mm, and the mounting holes 16 are uniformly distributed around the outer ring 2 of the slewing bearing; the staggered surfaces between the upper outer ring 21 and the tooth parts 7 and between the lower outer ring 22 and the tooth parts 7 are provided with sealing belts 17, the sealing belts 17 are made of butadiene acrylonitrile rubber, and the sealing belts 17 are used for preventing lubricant from running off and protecting the bearing from being polluted by dust and particles; and the middle parts of the transverse side surfaces of the upper outer ring 21 and the lower outer ring 22 are respectively provided with an oil nozzle 18, and the oil nozzles 18 can periodically lubricate the raceway 4 and the internal structure.
The embodiment of the present invention discloses a preferred embodiment, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention according to the above embodiment, and make different extensions and changes, but do not depart from the spirit of the present invention, all of which are within the protection scope of the present invention.
Claims (9)
1. The utility model provides a clear stifled machine of two gyration inner circle external teeth slewing bearing, includes inner circle, outer lane and ball, be provided with raceway, its characterized in that between the outer periphery looks surface of the interior periphery looks surface of outer lane and inner circle: the outer ring comprises an upper outer ring and a lower outer ring, the upper outer ring and the lower outer ring are symmetrical about a central axis a in the thickness direction of the slewing bearing, balls are uniformly distributed in ball grooves of a raceway between the upper outer ring and the inner ring and a raceway between the lower outer ring and the inner ring, the upper ball and the lower ball form a double-slewing bearing, a pin shaft groove for connecting a pin shaft is further formed in the inner wall of the inner ring, and a bolt hole for installing a connecting bolt is formed in the surface of the pin shaft groove;
a tooth part is arranged between the upper outer ring and the lower outer ring, a protrusion is arranged on the side surface of the inner ring, a groove is arranged at the joint of the side surface of the tooth part and the inner ring, and the protrusion is matched with the groove;
the outer side surfaces of the upper outer ring and the lower outer ring are further provided with plugging holes, the plugging holes transversely penetrate through the upper outer ring and the lower outer ring, balls are filled into the ball grooves through the plugging holes, the plugging holes are plugged through plugging, fixing holes which axially penetrate through the surfaces of the upper outer ring and the lower outer ring are further formed in the surfaces of the upper outer ring and the lower outer ring, and plugging pins are fixedly plugged through the fixing holes.
2. The rotary bearing with double rotary inner rings and outer teeth for the blockage removing machine according to claim 1, is characterized in that: and the upper surface and the lower surface of the upper outer ring and the lower outer ring are provided with axially extending mounting holes, and the mounting holes are 40-50mm deep into the upper outer ring or the lower outer ring.
3. The rotary bearing with double rotary inner rings and outer teeth for the blockage removing machine according to claim 2, is characterized in that: the mounting holes are uniformly distributed on the outer ring of the slewing bearing for a circle.
4. The rotary bearing with double rotary inner rings and outer teeth for the blockage removing machine according to claim 1, is characterized in that: and the middle part of the ball body of the ball is provided with an arc-shaped strip-shaped isolation block.
5. The rotary bearing with double rotary inner rings and outer teeth for the blockage removing machine according to claim 1, is characterized in that: the protrusions and the grooves are fixed through connecting bolts, the connecting bolts are fixed in the positioning holes, and the end portions of the connecting bolts plug the cylindrical pins to be fixed.
6. The rotary bearing with double rotary inner rings and outer teeth for the blockage removing machine as claimed in claim 5, wherein: the positioning hole and the connecting bolt use the axis O of the slewing bearing as a circular point, and the included angle alpha is 10-15 degrees.
7. The rotary bearing with double rotary inner rings and outer teeth for the blockage removing machine according to claim 1, is characterized in that: and sealing belts are arranged on the staggered surfaces between the upper outer ring and the tooth part and between the lower outer ring and the tooth part.
8. The clear stifled machine of claim 1, 2 or 7 with two gyration inner circle external teeth slewing bearing, characterized by: and oil nozzles are arranged in the middle of the transverse side surfaces of the upper outer ring and the lower outer ring.
9. The clear stifled machine of claim 1 or 4 is with two gyration inner circle external teeth slewing bearing, characterized by: the ball is a steel ball, and the material of the steel ball is GCr 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922403130.0U CN211574027U (en) | 2019-12-27 | 2019-12-27 | Double-rotation inner ring and outer tooth slewing bearing for blockage removing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922403130.0U CN211574027U (en) | 2019-12-27 | 2019-12-27 | Double-rotation inner ring and outer tooth slewing bearing for blockage removing machine |
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| Publication Number | Publication Date |
|---|---|
| CN211574027U true CN211574027U (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922403130.0U Active CN211574027U (en) | 2019-12-27 | 2019-12-27 | Double-rotation inner ring and outer tooth slewing bearing for blockage removing machine |
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| CN (1) | CN211574027U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183463A (en) * | 2021-12-10 | 2022-03-15 | 江苏万达特种轴承有限公司 | Split type slewing bearing of double reducing outer lane |
-
2019
- 2019-12-27 CN CN201922403130.0U patent/CN211574027U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183463A (en) * | 2021-12-10 | 2022-03-15 | 江苏万达特种轴承有限公司 | Split type slewing bearing of double reducing outer lane |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A double-rotating inner ring outer tooth slewing bearing for blockage removal machine Effective date of registration: 20220909 Granted publication date: 20200925 Pledgee: Bank of Jiangsu Co.,Ltd. Fengxian sub branch Pledgor: JIANGSU SHUANGZHENG MACHINERY Co.,Ltd. Registration number: Y2022980014890 |