CN211820393U - Single-row cross roller type slewing bearing - Google Patents
Single-row cross roller type slewing bearing Download PDFInfo
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- CN211820393U CN211820393U CN202020341138.9U CN202020341138U CN211820393U CN 211820393 U CN211820393 U CN 211820393U CN 202020341138 U CN202020341138 U CN 202020341138U CN 211820393 U CN211820393 U CN 211820393U
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- outer race
- race
- roller
- slewing bearing
- upper outer
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Abstract
The utility model discloses a single-row cross roller slewing bearing, including upper outer race, lower outer race and inner race, the bottom of upper outer race and the top looks adaptation of lower outer race, the inner chamber of outer race and the inner chamber that extends to upper outer race are run through down at the top of inner race, be provided with the roller between the internal surface of upper outer race and lower outer race and the surface of inner race. The utility model provides a current single row roller slewing bearing axial bearing capacity and the moment bearing capacity of tumbling relatively weaker, under the little condition of axial bearing capacity and the moment of overturning, it is big to have rigidity, it is little to warp, nevertheless when receiving great axial force and the moment of overturning, warp greatly, can't satisfy the running precision, and the roller is not convenient for install or change, be not convenient for add lubricating oil simultaneously, the lubricating oil on roller surface carries out the loss when rotating, lead to the problem that the coefficient of surface friction increase of roller causes slewing bearing's damage.
Description
Technical Field
The utility model relates to a slewing bearing technical field specifically is single row cross roller slewing bearing.
Background
The slewing bearing is widely applied in industry, is an important transmission element required by machinery which needs to do relative slewing motion between two objects and simultaneously bears axial force, radial force and tilting moment, and the single-row cross roller type slewing bearing can bear larger radial force, but the axial bearing capacity and the tilting moment bearing capacity of the existing single-row cross roller type slewing bearing are relatively weaker, under the condition that the axial bearing capacity and the tilting moment are not large, the single-row cross roller type slewing bearing has large rigidity and small deformation, but when the single-row cross roller type slewing bearing receives larger axial force and tilting moment, the single-row cross roller type slewing bearing has large deformation and cannot meet the running precision, the roller is inconvenient to install or replace, lubricating oil is inconvenient to add, and the lubricating oil on the surface of the roller is lost during rotation, so that the surface friction coefficient of the roller is increased to cause the damage of the slewing bearing.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a single row of roller slewing bearing that intersects, it is stronger to possess axial bearing capacity and the moment bearing capacity of tumbling, be convenient for add lubricating oil, the roller is convenient for install or the advantage of changing, current single row of roller slewing bearing axial bearing capacity and the moment bearing capacity of tumbling are relatively more weak to have been solved, under the not big condition of axial bearing capacity and moment of tumbling, it is big to have rigidity, it is little to warp, but when receiving great axial force and moment of tumbling, it is big to warp, can't satisfy the running accuracy, and the roller is not convenient for install or change, be not convenient for add lubricating oil simultaneously, the lubricating oil on roller surface carries out the loss when rotating, the problem that the coefficient of surface friction who leads to the roller increases and causes slewing bearing's damage.
In order to achieve the above object, the utility model provides a following technical scheme: the single-row crossed roller type slewing bearing comprises an upper outer race, a lower outer race and an inner race, wherein the bottom of the upper outer race is matched with the top of the lower outer race, the top of the inner race penetrates through the inner cavity of the lower outer race and extends to the inner cavity of the upper outer race, rollers are arranged between the inner surfaces of the upper outer race and the lower outer race and the outer surface of the inner race, balls are arranged between the inner surface of the upper outer race and the outer surface of the inner race, a first groove is formed in the left side of the bottom of the lower outer race, a first round hole is formed in the top of the inner cavity of the first groove, a first threaded groove is formed in the left side of the bottom of the upper outer race, a first bolt is arranged in the top of the inner cavity of the first groove in a penetrating mode, the top of the first bolt penetrates through the inner cavity of the first, the oil duct is arranged at the bottom of the left side of the upper outer race, the oil nozzle is arranged at the bottom of the left side of the upper outer race in a penetrating mode, and the right side of the oil nozzle penetrates into an inner cavity of the oil duct.
Preferably, a second groove is formed in the top of the left side of the upper outer race, a second round hole is formed in the right side of the inner cavity of the second groove, a plug is arranged on the right side of the inner cavity of the second groove in a penetrating mode, a second thread groove is formed in the top and the bottom of the right side of the inner cavity of the second groove in a penetrating mode, through holes are formed in the top and the bottom of the left side of the plug in a penetrating mode, a second bolt is arranged on the top and the bottom of the left side of the plug in a penetrating mode, the right end of the second bolt penetrates through the inner cavity of the through hole and extends to the inner cavity of the.
Preferably, the top of the inner race is provided with an upper annular groove, the inner wall of the upper annular groove is movably connected with an upper sealing gasket, and one side of the upper sealing gasket extends to the outside of the upper annular groove and is in contact with the inner surface of the upper outer race.
Preferably, the bottom of the inner race is provided with a lower annular groove, the inner wall of the lower annular groove is movably connected with a lower sealing gasket, and one side of the lower sealing gasket extends to the outside of the lower annular groove and is in contact with the bottom of the lower outer race.
Preferably, a first raceway matched with the rollers is arranged between the inner surfaces of the upper outer race and the lower outer race and the outer surface of the inner race, a second raceway matched with the balls is arranged between the inner surface of the upper outer race and the outer surface of the inner race, and the number of the rollers and the number of the balls are several.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model has the advantages of stronger axial bearing capacity and tipping moment bearing capacity, convenient lubricant addition and convenient installation or replacement of the roller through the matching of the upper outer race, the lower outer race, the inner race, the roller, the ball, the first groove, the first round hole, the first thread groove, the first bolt, the oil duct and the oil nozzle, solves the problem that the existing single-row crossed roller type slewing bearing has weaker axial bearing capacity and tipping moment bearing capacity, under the condition of small axial bearing force and overturning moment, the rigidity is large, the deformation is small, but when the axial bearing force and the overturning moment are large, the deformation is large, the running precision cannot be met, and the roller is inconvenient to install or replace and is inconvenient to add lubricating oil, and the lubricating oil on the surface of the roller is lost when the roller rotates, so that the friction coefficient of the surface of the roller is increased, and the slewing bearing is damaged.
2. The utility model discloses a set up second recess and second round hole, under the condition of not dismantling slewing bearing, the change of the ball of being convenient for, through setting up stopper, second thread groove, through-hole and second bolt, carry on spacingly to the ball, prevent that the ball from spilling from second recess and second round hole, through setting up sealed pad and lower seal pad, seal slewing bearing, prevent the entering of particulate matter, cause slewing bearing's damage.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view of A of FIG. 1 according to the present invention;
fig. 3 is an enlarged schematic view of B in fig. 1 according to the present invention.
In the figure: 1 upper outer race, 2 lower outer race, 3 inner race, 4 rollers, 5 balls, 6 first groove, 7 first round hole, 8 first thread groove, 9 first bolt, 10 oil duct, 11 oil nozzle, 12 second groove, 13 second round hole, 14 plug, 15 second thread groove, 16 through hole, 17 second bolt, 18 upper ring groove, 19 upper gasket, 20 lower ring groove, 21 lower gasket.
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. 1-3, the single-row crossed roller type slewing bearing includes an upper outer race 1, a lower outer race 2 and an inner race 3, the bottom of the upper outer race 1 is matched with the top of the lower outer race 2, the top of the inner race 3 penetrates through the inner cavity of the lower outer race 2 and extends to the inner cavity of the upper outer race 1, rollers 4 are disposed between the inner surfaces of the upper outer race 1 and the lower outer race 2 and the outer surface of the inner race 3, balls 5 are disposed between the inner surface of the upper outer race 1 and the outer surface of the inner race 3, a first groove 6 is disposed on the left side of the bottom of the lower outer race 2, a first circular hole 7 is disposed on the top of the inner cavity of the first groove 6, a first threaded groove 8 is disposed on the left side of the bottom of the upper outer race 1, a first bolt 9 is disposed on the top of the inner cavity of the first groove 6, the first bolt 9 is in threaded connection with the first thread groove 8, the left bottom of the upper outer race 1 is provided with an oil duct 10, the left bottom of the upper outer race 1 is provided with an oil nozzle 11 in a penetrating manner, the right side of the oil nozzle 11 penetrates into an inner cavity of the oil duct 10, the left top of the upper outer race 1 is provided with a second groove 12, the right side of the inner cavity of the second groove 12 is provided with a second round hole 13, the right side of the inner cavity of the second groove 12 is provided with a plug 14 in a penetrating manner, the top and the bottom of the right side of the inner cavity of the second groove 12 are both provided with second thread grooves 15, the top and the bottom of the left side of the plug 14 are both provided with through holes 16, the right end of the second bolt 17 penetrates through the inner cavity of the through hole 16 and extends to the inner cavity of the second thread groove 15, the second bolt 17 is in threaded connection with, under the condition of not detaching the slewing bearing, the replacement of the ball 5 is convenient, the ball 5 is limited by arranging the plug 14, the second thread groove 15, the through hole 16 and the second bolt 17, the ball 5 is prevented from leaking from the second groove 12 and the second round hole 13, the top of the inner race 3 is provided with the upper annular groove 18, the inner wall of the upper annular groove 18 is movably connected with the upper gasket 19, one side of the upper gasket 19 extends to the outside of the upper annular groove 18 and is contacted with the inner surface of the upper outer race 1, the bottom of the inner race 3 is provided with the lower annular groove 20, the inner wall of the lower annular groove 20 is movably connected with the lower gasket 21, one side of the lower gasket 21 extends to the outside of the lower annular groove 20 and is contacted with the bottom of the lower outer race 2, a first raceway matched with the roller 4 is arranged between the inner surfaces of the upper outer race 1 and the lower outer race 2 and the outer surface of the inner race 3, and a second raceway matched with the The number of the rollers 4 and the balls 5 is a plurality, the slewing bearing is sealed by arranging the upper sealing gasket 19 and the lower sealing gasket 21 to prevent particles from entering and damaging the slewing bearing, the upper outer race 1, the lower outer race 2, the inner race 3, the rollers 4, the balls 5, the first groove 6, the first round hole 7, the first thread groove 8, the first bolt 9, the oil duct 10 and the oil nozzle 11 are matched, the slewing bearing device has the advantages of stronger axial bearing capacity and tilting moment bearing capacity, convenience in adding lubricating oil and convenience in mounting or replacing the rollers 4, the problems that the existing single-row crossed roller type slewing bearing has relatively weaker axial bearing capacity and tilting moment bearing capacity, has large rigidity and small deformation under the condition that the axial bearing capacity and the tilting moment are not large, but has large deformation and cannot meet the running precision when the large axial force and the tilting moment are received, and the roller 4 is inconvenient to install or replace and to add lubricating oil, and the lubricating oil on the surface of the roller 4 is consumed when the roller 4 rotates, so that the friction coefficient of the surface of the roller 4 is increased to cause the damage of the slewing bearing.
When in use, the ball 5 is added to the existing single-row crossed roller type slewing bearing, so that the axial force and the tipping moment are jointly borne by the ball 5 and the roller 4, the radial force is borne by the roller 4, the axial bearing capacity and the tipping moment bearing capacity are improved under the condition that the diameters of the slewing centers of the rollers 4 are the same, the device is suitable for working positions with higher requirement on slewing precision and larger radial force, axial force and tipping moment, and is convenient to install or replace the roller 4, the first bolt 9 is rotated by a tool, the first bolt 9 is driven by the rotation of the first bolt 9 to be separated from the first thread groove 8, the first bolt 9 can be detached, the lower outer race 2 is taken down to install or replace the roller 4, when the friction coefficient of the roller 4 in the slewing bearing is increased, lubricating oil is added to the roller 4 through the oil nozzle 11 and the oil duct 10 to reduce the abrasion degree of the roller 4, the service life of the slewing bearing is prolonged, the second bolt 17 is rotated by a tool, the second bolt 17 is driven by the rotation of the second bolt 17 to be separated from the second thread groove 15, the second bolt 17 can be detached, and the plug 14 is taken down to install or replace the ball 5.
All parts used in the application document are standard parts and can be purchased from the market, and the specific connection mode of all parts adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, and detailed description is not given here.
In summary, the following steps: the single-row crossed roller type slewing bearing is characterized in that an upper outer race 1, a lower outer race 2, an inner race 3, rollers 4, balls 5, a first groove 6, a first round hole 7, a first thread groove 8, a first bolt 9, an oil duct 10 and an oil nozzle 11 are matched, and the problems that the axial bearing capacity and the tilting moment bearing capacity of the existing single-row crossed roller type slewing bearing are relatively weak, the rigidity is high and the deformation is small under the condition that the axial bearing capacity and the tilting moment are not large, but the deformation is large when the roller receives large axial force and tilting moment, the running precision cannot be met, the roller is inconvenient to install or replace, lubricating oil is inconvenient to add, and the lubricating oil on the surface of the roller is lost during rotation, so that the surface friction coefficient of the roller is increased and the slewing bearing is damaged are solved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. Single row cross roller slewing bearing, including upper and lower outer race (1), lower outer race (2) and inner race (3), characterized in that: the bottom of the upper outer race (1) is matched with the top of the lower outer race (2), the top of the inner race (3) penetrates through the inner cavity of the lower outer race (2) and extends to the inner cavity of the upper outer race (1), a roller (4) is arranged between the inner surfaces of the upper outer race (1) and the lower outer race (2) and the outer surface of the inner race (3), a ball (5) is arranged between the inner surface of the upper outer race (1) and the outer surface of the inner race (3), a first groove (6) is formed in the left side of the bottom of the lower outer race (2), a first round hole (7) is formed in the top of the inner cavity of the first groove (6), a first thread groove (8) is formed in the left side of the bottom of the upper outer race (1), a first bolt (9) is arranged in the top of the inner cavity of the first groove (6) in a penetrating manner, the top of the first bolt (9) penetrates through the inner cavity of the first round, the first bolt (9) is in threaded connection with the first thread groove (8), an oil duct (10) is formed in the bottom of the left side of the upper outer race (1), an oil nozzle (11) is arranged at the bottom of the left side of the upper outer race (1) in a penetrating mode, and the right side of the oil nozzle (11) penetrates through an inner cavity of the oil duct (10).
2. The single row cross-roller slewing bearing of claim 1, wherein: second recess (12) have been seted up at the left top of last outer race (1), second round hole (13) have been seted up on the right side of second recess (12) inner chamber, the right side of second recess (12) inner chamber is run through and is provided with stopper (14), second thread groove (15) have all been seted up to the top and the bottom on second recess (12) inner chamber right side, through-hole (16) have all been seted up to the left top of stopper (14) and bottom, the left top of stopper (14) and bottom all run through and are provided with second bolt (17), the right-hand member of second bolt (17) runs through the inner chamber of through-hole (16) and extends to the inner chamber of second thread groove (15), second bolt (17) and second thread groove (15) threaded connection.
3. The single row cross-roller slewing bearing of claim 1, wherein: an upper annular groove (18) is formed in the top of the inner race (3), an upper sealing gasket (19) is movably connected to the inner wall of the upper annular groove (18), and one side of the upper sealing gasket (19) extends to the outer portion of the upper annular groove (18) and is in contact with the inner surface of the upper outer race (1).
4. The single row cross-roller slewing bearing of claim 1, wherein: the inner race (3) is provided with a lower annular groove (20) at the bottom, the inner wall of the lower annular groove (20) is movably connected with a lower sealing gasket (21), and one side of the lower sealing gasket (21) extends to the outside of the lower annular groove (20) and is contacted with the bottom of the lower outer race (2).
5. The single row cross-roller slewing bearing of claim 1, wherein: a first roller path matched with the rollers (4) is arranged between the inner surfaces of the upper outer race (1) and the lower outer race (2) and the outer surface of the inner race (3), a second roller path matched with the balls (5) is arranged between the inner surface of the upper outer race (1) and the outer surface of the inner race (3), and the number of the rollers (4) and the number of the balls (5) are respectively a plurality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020341138.9U CN211820393U (en) | 2020-03-18 | 2020-03-18 | Single-row cross roller type slewing bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020341138.9U CN211820393U (en) | 2020-03-18 | 2020-03-18 | Single-row cross roller type slewing bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211820393U true CN211820393U (en) | 2020-10-30 |
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ID=73011834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020341138.9U Active CN211820393U (en) | 2020-03-18 | 2020-03-18 | Single-row cross roller type slewing bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211820393U (en) |
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2020
- 2020-03-18 CN CN202020341138.9U patent/CN211820393U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20230530 Address after: 114000 South Industrial Park of Tai'an Town, Tai'an County, Anshan City, Liaoning Province Patentee after: Liaoning new Fuyuan Precision Manufacturing Technology Co.,Ltd. Address before: Qi Da Shan Zhen Wang Jia Xin Cun, Qianshan District, Anshan City, Liaoning Province Patentee before: ANSHAN NEWFOTON MACHINERY CO.,LTD. |