CN211398271U - Double-row same-diameter high-temperature-resistant slewing bearing - Google Patents
Double-row same-diameter high-temperature-resistant slewing bearing Download PDFInfo
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- CN211398271U CN211398271U CN201922403314.7U CN201922403314U CN211398271U CN 211398271 U CN211398271 U CN 211398271U CN 201922403314 U CN201922403314 U CN 201922403314U CN 211398271 U CN211398271 U CN 211398271U
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- inner ring
- ball
- slewing bearing
- raceway
- double
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Abstract
The utility model discloses a double row is high temperature resistant slewing bearing in same footpath, including inner circle, outer lane, ball and tooth portion, be provided with the raceway between inner circle and the outer lane, the ball sets up in the raceway between inner circle and outer lane, the outer lane is provided with tooth portion, the inner circle includes inner circle and lower inner circle, the raceway of upper inner circle, lower inner circle and tooth portion junction all is provided with ball and lower ball, upper ball and lower ball diameter are the same, upper ball and lower ball are apart from slewing bearing's axle center the same distance to the axle center of upper ball and lower ball is in same radial tangent plane; a trapezoidal connecting structure is arranged on the contact surface of the upper inner ring and the lower inner ring, and a clamping buffer structure is arranged at the joint of the outer edge of the lower surface of the upper inner ring and the outer ring. The bearing angles of the upper arc raceway and the lower arc raceway in the device are both 90 degrees, so that the device can bear large axial force and tilting moment; the ball and the isolating block can be directly discharged into the upper raceway and the lower raceway, so that the ball is convenient to disassemble and replace.
Description
Technical Field
The utility model relates to the technical field of, especially, relate to a double row is with high temperature resistant slewing bearing of footpath.
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 structure of the slewing bearing in the prior art is divided into the following parts according to the structural style: the design is that the clearance between the roller path and the ball is small, the axial force directly acts on the ball, the friction of the roller path to the outer wall of the ball is increased, the service life of the device is shortened, and the device is not suitable for loading and unloading machines with more than medium diameter and has a low application range.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a double-row same-diameter high-temperature-resistant slewing bearing.
The utility model adopts the technical proposal that: the utility model provides a high temperature resistant slewing bearing of double row same footpath, includes inner circle, outer lane, ball and tooth portion, be provided with the raceway between inner circle and the outer lane, the ball sets up in the raceway between inner circle and outer lane, the outer lane is provided with tooth portion, the inner circle includes inner circle and lower inner circle, the raceway of going up inner circle, lower inner circle and tooth portion junction all is provided with ball and ball down, it is the same with ball diameter down to go up the ball, go up ball and ball down apart from slewing bearing's axle center same distance to the axle center of going up ball and ball down is at same radial tangent plane.
Furthermore, a trapezoidal connecting structure is arranged on the contact surface of the upper inner ring and the lower inner ring, and a clamping buffer structure is arranged at the joint of the outer edge of the lower surface of the upper inner ring and the outer ring.
Furthermore, the buffer structure comprises a groove arranged on the outer edge of the lower surface of the upper inner ring and a protrusion arranged on the upper surface of the tooth part, and the protrusion is clamped with the groove.
Further, the matched side edges of the protrusions and the grooves have inclined angles.
Further, after the upper inner ring and the lower inner ring are assembled, the gap between the protrusion and the groove is 3-5 mm.
Furthermore, the upper surface and the lower surface of the upper inner ring longitudinally penetrate through a hoisting hole, the upper surface and the lower surface of the lower inner ring longitudinally penetrate through a mounting hole, and the hoisting hole penetrates through the mounting hole.
Further, still be provided with the spacing block between the adjacent ball, the spacing block is the aluminum alloy material.
Furthermore, the middle parts of the inner walls of the upper inner ring and the lower inner ring are also provided with oil nozzles used for lubricating the roller paths and the internal structures.
Further, the lower surface of the tooth part is axially provided with a fixing hole.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the bearing angles of the upper arc raceway and the lower arc raceway in the device are both 90 degrees, and the device can bear large axial force and tilting moment.
2. The ball and the isolation block can be directly discharged into the upper and lower raceways, and the open assembly is convenient for the disassembly and replacement of the ball.
3. The double-row ball type slewing bearing has larger axial and radial dimensions and a tight structure, and is particularly suitable for loading and unloading machines such as tower cranes, automobile cranes and the like with the requirements of more than medium diameter.
Drawings
Fig. 1 is a schematic structural view of an embodiment 1 of the double-row same-diameter high-temperature-resistant slewing bearing of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 3 is a schematic structural diagram of embodiment 3 of the present invention;
fig. 4 is a schematic structural diagram of the buffer structure shown in fig. 1, 2 and 3 according to the present invention;
fig. 5 is a top view of the present invention.
Wherein: 1-inner ring, 1 a-upper inner ring, 1 b-lower inner ring, 2-outer ring, 3-ball, 3 a-upper ball, 3 b-lower ball, 4-tooth part, 5-raceway, 6-buffer structure, 6 b-bulge, 6 a-groove, 7-hoisting hole, 8-mounting hole, 9-fixing hole and 10-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.
Example 1:
as shown in fig. 1 and 5, a double-row same-diameter high-temperature-resistant slewing bearing comprises an inner ring 1, an outer ring 2, balls 3 and a tooth portion 4, wherein a raceway 5 is arranged between the inner ring 1 and the outer ring 2, the balls 3 are arranged in the raceway 5 between the inner ring 1 and the outer ring 2, the outer ring 2 is provided with the tooth portion 4, the inner ring 1 comprises an upper inner ring 1a and a lower inner ring 1b, the raceways 5 at the joints of the upper inner ring 1a and the lower inner ring 1b and the tooth portion 4 are respectively provided with an upper ball 3a and a lower ball 3b, the diameters of the upper ball 3a and the lower ball 3b are the same, the upper ball 3a and the lower ball 3b are the same distance from the axis of the slewing bearing, and the axes of the upper ball 3a and the lower ball 3b are in.
As shown in fig. 4, a trapezoidal connection structure is arranged on a contact surface of the upper inner ring 1a and the lower inner ring 1b, a buffer structure 6 for clamping is arranged at a connection position between the outer edge of the lower surface of the upper inner ring 1a and the outer ring 2, the buffer structure 6 comprises a groove 6a arranged on the outer edge of the lower surface of the upper inner ring 1a and a protrusion 6b arranged on the upper surface of the tooth portion 4, the protrusion 6b is clamped with the groove 6a, a matched side edge of the protrusion 6b and the groove 6a has an inclined angle, and after the upper inner ring 1a and the lower inner ring 1b are assembled, a gap between the protrusion 6b and the groove 6a is 3 mm.
In the above embodiment, the upper surface and the lower surface of the upper inner ring 1a longitudinally penetrate through the hoisting hole 7, the upper surface and the lower surface of the lower inner ring 1b longitudinally penetrate through the mounting hole 8, the hoisting hole 7 and the mounting hole 8 penetrate through each other, the mounting hole 8 is internally provided with the connecting bolt for fixing the upper inner ring 1a and the lower inner ring 1b, and after the assembly of the slewing bearing is completed, the hoisting hole 7 is blocked to prevent dust from entering the device.
In the above embodiment, a spacer block is further disposed between the adjacent balls 3, the spacer block is made of an aluminum alloy material, the spacer block can play a role in reducing friction and preventing slipping and jamming in the bearing rotation process, oil nozzles 10 for lubricating the raceway 5 and the internal structure are further disposed in the middle of the inner walls of the upper inner ring 1a and the lower inner ring 1b, and fixing holes 9 are axially disposed in the lower surface of the tooth portion 4.
Example 2:
as shown in fig. 2 and 5, the double-row same-diameter high-temperature-resistant slewing bearing comprises an inner ring 1, an outer ring 2, balls 3 and a tooth part 4, wherein a raceway 5 is arranged between the inner ring 1 and the outer ring 2, the balls 3 are arranged in the raceway 5 between the inner ring 1 and the outer ring 2, the outer ring 2 is provided with the tooth part 4, the inner ring 1 comprises an upper inner ring 1a and a lower inner ring 1b, the raceways 5 at the joints of the upper inner ring 1a and the lower inner ring 1b and the tooth part 4 are respectively provided with an upper ball 3a and a lower ball 3b, the diameter of the upper ball 3a is larger than that of the lower ball 3b, the diameters of the upper ball 3a and the lower ball 3b are different by 1-2mm, the upper ball 3a and the lower ball 3b are at the same distance from the axis of the slewing bearing, and the axes of the upper ball 3a and.
As shown in fig. 4, a trapezoidal connection structure is arranged on a contact surface of the upper inner ring 1a and the lower inner ring 1b, a buffer structure 6 for clamping is arranged at a connection position between the outer edge of the lower surface of the upper inner ring 1a and the outer ring 2, the buffer structure 6 comprises a groove 6a arranged on the outer edge of the lower surface of the upper inner ring 1a and a protrusion 6b arranged on the upper surface of the tooth portion 4, the protrusion 6b is clamped with the groove 6a, a matched side edge of the protrusion 6b and the groove 6a has an inclined angle, and after the upper inner ring 1a and the lower inner ring 1b are assembled, a gap between the protrusion 6b and the groove 6a is 4 mm.
In the above embodiment, the upper surface and the lower surface of the upper inner ring 1a longitudinally penetrate through the hoisting hole 7, the upper surface and the lower surface of the lower inner ring 1b longitudinally penetrate through the mounting hole 8, the hoisting hole 7 and the mounting hole 8 penetrate through each other, the mounting hole 8 is internally provided with the connecting bolt for fixing the upper inner ring 1a and the lower inner ring 1b, and after the assembly of the slewing bearing is completed, the hoisting hole 7 is blocked to prevent dust from entering the device.
In the above embodiment, a spacer block is further disposed between the adjacent balls 3, the spacer block is made of an aluminum alloy material, the spacer block can play a role in reducing friction and preventing slipping and jamming in the bearing rotation process, oil nozzles 10 for lubricating the raceway 5 and the internal structure are further disposed in the middle of the inner walls of the upper inner ring 1a and the lower inner ring 1b, and fixing holes 9 are axially disposed in the lower surface of the tooth portion 4.
Example 3:
as shown in fig. 3 and 5, a double-row same-diameter high-temperature-resistant slewing bearing comprises an inner ring 1, an outer ring 2, balls 3 and a tooth portion 4, wherein a raceway 5 is arranged between the inner ring 1 and the outer ring 2, the balls 3 are arranged in the raceway 5 between the inner ring 1 and the outer ring 2, the outer ring 2 is provided with the tooth portion 4, the inner ring 1 comprises an upper inner ring 1a and a lower inner ring 1b, the raceways 5 at the joints of the upper inner ring 1a and the lower inner ring 1b and the tooth portion 4 are respectively provided with an upper ball 3a and a lower ball 3b, the diameter of the upper ball 3a is smaller than that of the lower ball 3b, the diameters of the upper ball 3a and the lower ball 3b are different by 1-2mm, the upper ball 3a and the lower ball 3b are at the same distance from the axis of the slewing bearing, and the axes of the upper ball 3a and.
As shown in fig. 4, a trapezoidal connection structure is arranged on a contact surface of the upper inner ring 1a and the lower inner ring 1b, a buffer structure 6 for clamping is arranged at a connection position between the outer edge of the lower surface of the upper inner ring 1a and the outer ring 2, the buffer structure 6 comprises a groove 6a arranged on the outer edge of the lower surface of the upper inner ring 1a and a protrusion 6b arranged on the upper surface of the tooth portion 4, the protrusion 6b is clamped with the groove 6a, a matched side edge of the protrusion 6b and the groove 6a has an inclined angle, and after the upper inner ring 1a and the lower inner ring 1b are assembled, a gap between the protrusion 6b and the groove 6a is 5 mm.
In the above embodiment, the upper surface and the lower surface of the upper inner ring 1a longitudinally penetrate through the hoisting hole 7, the upper surface and the lower surface of the lower inner ring 1b longitudinally penetrate through the mounting hole 8, the hoisting hole 7 and the mounting hole 8 penetrate through each other, the mounting hole 8 is internally provided with the connecting bolt for fixing the upper inner ring 1a and the lower inner ring 1b, and after the assembly of the slewing bearing is completed, the hoisting hole 7 is blocked to prevent dust from entering the device.
In the above embodiment, a spacer block is further disposed between the adjacent balls 3, the spacer block is made of an aluminum alloy material, the spacer block can play a role in reducing friction and preventing slipping and jamming in the bearing rotation process, oil nozzles 10 for lubricating the raceway 5 and the internal structure are further disposed in the middle of the inner walls of the upper inner ring 1a and the lower inner ring 1b, and fixing holes 9 are axially disposed in the lower surface of the tooth portion 4.
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 (8)
1. The utility model provides a high temperature resistant slewing bearing of double row same diameter, includes inner circle, outer lane, ball and tooth portion, be provided with the raceway between inner circle and the outer lane, the ball sets up in the raceway between inner circle and outer lane, the outer lane is provided with tooth portion, its characterized in that: the inner ring comprises an upper inner ring and a lower inner ring, the raceways at the joints of the upper inner ring, the lower inner ring and the tooth part are provided with upper balls and lower balls, the diameters of the upper balls and the lower balls are the same, the upper balls and the lower balls are at the same distance from the axis of the slewing bearing, and the axes of the upper balls and the lower balls are on the same radial tangent plane;
a trapezoidal connecting structure is arranged on the contact surface of the upper inner ring and the lower inner ring, and a clamping buffer structure is arranged at the joint of the outer edge of the lower surface of the upper inner ring and the outer ring.
2. The double-row same-diameter high-temperature-resistant slewing bearing according to claim 1, wherein: the buffer structure comprises a groove arranged on the outer edge of the lower surface of the upper inner ring and a protrusion arranged on the upper surface of the tooth part, and the protrusion is clamped with the groove.
3. The double-row same-diameter high-temperature-resistant slewing bearing according to claim 2, wherein: the side edges of the protrusions and the grooves which are matched have inclined angles.
4. The double-row same-diameter high-temperature-resistant slewing bearing according to claim 2 or 3, wherein: after the upper inner ring and the lower inner ring are assembled, the gap between the protrusion and the groove is 3-5 mm.
5. The double-row same-diameter high-temperature-resistant slewing bearing according to claim 1 or 2, wherein: the upper surface and the lower surface of the upper inner ring longitudinally penetrate through the hoisting hole, the upper surface and the lower surface of the lower inner ring longitudinally penetrate through the mounting hole, and the hoisting hole is penetrated through the mounting hole.
6. The double-row same-diameter high-temperature-resistant slewing bearing according to claim 1, wherein: still be provided with the spacing block between the adjacent ball, the spacing block is the aluminum alloy material.
7. The double-row same-diameter high-temperature-resistant slewing bearing according to claim 1 or 2, wherein: and oil nozzles for lubricating the roller path and the internal structure are also arranged in the middle of the inner walls of the upper inner ring and the lower inner ring.
8. The double-row same-diameter high-temperature-resistant slewing bearing according to claim 1 or 2, wherein: and a fixing hole is axially formed in the lower surface of the tooth part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922403314.7U CN211398271U (en) | 2019-12-27 | 2019-12-27 | Double-row same-diameter high-temperature-resistant slewing bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922403314.7U CN211398271U (en) | 2019-12-27 | 2019-12-27 | Double-row same-diameter high-temperature-resistant slewing bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211398271U true CN211398271U (en) | 2020-09-01 |
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ID=72233076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922403314.7U Active CN211398271U (en) | 2019-12-27 | 2019-12-27 | Double-row same-diameter high-temperature-resistant slewing bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211398271U (en) |
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2019
- 2019-12-27 CN CN201922403314.7U patent/CN211398271U/en active Active
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