CN210461440U - Super-huge double-row tapered roller slewing bearing - Google Patents
Super-huge double-row tapered roller slewing bearing Download PDFInfo
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- CN210461440U CN210461440U CN201921007434.9U CN201921007434U CN210461440U CN 210461440 U CN210461440 U CN 210461440U CN 201921007434 U CN201921007434 U CN 201921007434U CN 210461440 U CN210461440 U CN 210461440U
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- inner ring
- gasket
- slewing bearing
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- pin
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- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000012856 packing Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 7
- 238000003754 machining Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses an oversize double-row tapered roller slewing bearing, which comprises an inner ring, an outer ring and a rolling body arranged between the inner ring and the outer ring, wherein the inner ring comprises a first inner ring, a second inner ring and a gasket, the gasket is arranged between the first inner ring and the second inner ring, a threaded cylindrical pin is arranged at the contact part of the second inner ring and the gasket, the lower end of the threaded cylindrical pin is connected in the second inner ring in a threaded manner, and the upper end of the threaded cylindrical pin extends to the upper position of the second inner ring. The maintenance cost of enterprises is reduced.
Description
Technical Field
The utility model belongs to the technical field of slewing bearing, concretely relates to super-huge double-row tapered roller slewing bearing.
Background
The slewing bearing is also called as a turntable bearing, is widely applied in the actual industry, is called as a joint of a machine, and is an important transmission part which is necessary for a machine which needs to do relative slewing motion between two objects and simultaneously bears axial force, radial force and tilting moment. With the rapid development of the mechanical industry, the slewing bearing is widely applied to the industries of ship equipment, engineering machinery, light industry machinery, metallurgical machinery, medical machinery, industrial machinery and the like.
For the super-huge double-row tapered roller slewing bearing, the clearance of the slewing bearing needs to be strictly controlled during production, so that the requirements on the machining precision of the inner ring, the outer ring and the roller are higher, and the machining difficulty and the production cost of the slewing bearing are increased; in addition, because the bearing capacity is large during working, the contact part of the inner ring and the outer ring is easy to wear during the rotation of the tapered roller inside the tapered roller, so that the axial clearance and the radial clearance of the slewing bearing are increased, the working instability of the slewing bearing is aggravated due to the increase of the clearance, and the service life of the slewing bearing is further shortened. In order to solve the above problems, in the prior art, a structure that a washer is added as shown in fig. 4 is adopted, so that during machining, the slewing bearing achieves precise control of the play by means of grinding the washer, and after the inner ring and the outer ring of the slewing bearing are worn, the defect of the increased play is also compensated by means of replacing the washer or grinding the washer, and in the prior art, the first inner ring, the washer and the second inner ring are positioned by a taper pin, however, the structure has the following defects: the main defect lies in that after the slewing bearing play increases, in order to make first inner circle and second inner circle continue to use, can carry out abrasive machining to the packing ring in middle, or adopt the packing ring of thickness thinner to replace, and because whole inner circle adopts taper pin location, after the packing ring thickness diminishes, need utilize the reamer to carry out reworking to packing ring and the second inner circle taper hole of below to guarantee that the taper pin can install in the pin hole once more, this kind of working method not only inefficiency, and when the pinhole size caused the deviation in the course of working, also can influence the assembly of whole inner circle, increase the cost input of enterprise.
Disclosure of Invention
The utility model provides a solve above-mentioned technical problem, provide a super-huge double-row tapered roller slewing bearing, utilize screw thread cylindric lock to fix a position back with packing ring and second inner circle earlier, recycle the taper pin and realize the location to first inner circle, packing ring and second inner circle, even after packing ring thickness size reduces like this, also only need join in marriage the pinhole of hinge second inner circle tip, the time has been shortened to also can improve the processingquality of inner circle, be favorable to reducing the maintenance cost of enterprise.
The utility model adopts the technical proposal that: an oversize double-row tapered roller slewing bearing comprises an inner ring, an outer ring and a rolling body arranged between the inner ring and the outer ring, wherein the inner ring comprises a first inner ring, a second inner ring and a gasket, the gasket is arranged between the first inner ring and the second inner ring, a threaded cylindrical pin is arranged at the contact part of the second inner ring and the gasket, the lower end of the threaded cylindrical pin is connected inside the second inner ring in a threaded manner, the upper end of the threaded cylindrical pin extends to the position above the second inner ring, and a gasket ring is sleeved on the threaded cylindrical pin to position the gasket; the inner ring is internally provided with a taper pin for positioning the first inner ring and the second inner ring, the taper pin penetrates through the gasket, a straight hole is formed in the gasket at the position where the taper pin is located, the diameter of the straight hole is larger than the maximum diameter of the taper pin, the upper end of the taper pin is provided with a screw for locking the taper pin, and the screw is in threaded connection with the first inner ring.
And a plurality of connecting bolts for connecting the first inner ring, the gasket and the second inner ring are arranged in the thickness direction of the inner ring, and the connecting bolts are uniformly distributed around the center of the first inner ring.
The number of the taper pins is two.
The number of the threaded cylindrical pins is two.
The rolling body comprises a retainer and a roller, and the roller is in a conical structure.
An assembly method of an inner ring of an oversize double-row tapered roller slewing bearing comprises the following steps:
step one, mounting a threaded cylindrical pin; installing two threaded cylindrical pins in threaded holes in the upper end face of the second inner ring, and after the installation is finished, protruding the upper cylindrical part of each threaded cylindrical pin out of the upper end surface of the second inner ring;
assembling the second inner ring and the gasket; correspondingly mounting through holes formed in the thickness direction of the gasket on the two raised threaded cylindrical pins in the first step to realize concentric assembly of the gasket and the second inner ring;
and step three, connecting the first inner ring and the second inner ring by using a taper pin, wherein the taper pin penetrates through a straight hole formed in the thickness direction of the gasket during connection, and after the taper pin is installed, a screw is installed on the first inner ring to realize axial positioning of the taper pin.
In the process of processing the slewing bearing, in order to ensure that the clearance of the roller between the inner ring and the outer ring meets the design requirement, the upper surface and the lower surface of the gasket can be matched and ground after the first inner ring and the second inner ring are processed, the threaded cylindrical pin is arranged on the second inner ring after the matching and grinding is finished, and then the gasket is arranged on the threaded cylindrical pin in a matched manner, so that the positioning of the gasket is realized, and the radial dislocation generated in the process of arranging the first inner ring can be prevented; after the gasket is positioned, the first inner ring and the second inner ring are positioned by the taper pin, and the first inner ring, the second inner ring and the gasket are positioned completely, and are locked by the connecting bolt, so that the inner ring is assembled; when the inner circle appears, when the work raceway of outer lane produced the wearing and tearing phenomenon, dismantle the screw, the taper pin is extracted, first inner circle, second inner circle and packing ring separation, the staff can carry out abrasive machining or replacement to the packing ring alone, because packing ring thickness changes, the pinhole size at original taper pin place can not make the taper pin consolidate the inner circle once more, consequently need utilize the taper reamer to process original pinhole, because the straight hole of packing ring thickness direction is greater than taper pin maximum diameter, therefore, only need utilize the reamer to process the pinhole of second inner circle top, can make the degree of difficulty greatly reduced of processing.
The inner ring comprises a first inner ring, a second inner ring and a gasket, and the gasket is arranged between the first inner ring and the second inner ring; the purpose of this is: the gasket is added, so that the processing difficulty of the inner ring of the slewing bearing can be reduced, the size requirement can be met only by adopting a matched grinding mode on the gasket during precision processing, and the processing time of the whole inner ring can be shortened; and after the clearance of the slewing bearing is increased, the defect of the increased clearance can be compensated through disassembling and match grinding the gasket, and the service life of the slewing bearing is prolonged.
The contact part of the second inner ring and the gasket is provided with a threaded cylindrical pin, the lower end of the threaded cylindrical pin is connected to the inside of the second inner ring in a threaded manner, the upper end of the threaded cylindrical pin extends to the position above the second inner ring, and the gasket is sleeved on the threaded cylindrical pin to realize positioning of the gasket; the purpose of this is: the second inner ring and the gasket are positioned firstly during assembly, the gasket is prevented from deviating in the radial direction and the circumferential direction, then the first inner ring is assembled, the difficulty of the whole inner ring in the assembly process can be reduced, and the assembly efficiency is improved.
The inner ring is internally provided with a taper pin for positioning the first inner ring and the second inner ring, the taper pin penetrates through the gasket, a straight hole is formed in the gasket at the position of the taper pin, and the diameter of the straight hole is larger than the maximum diameter of the taper pin; the purpose of this is: after the second inner ring and the gasket are mutually positioned, the conical pin is utilized to realize the positioning between the first inner ring and the second inner ring, so that the positioning of the whole inner ring is completed; after the assembly is finished, the diameter of the straight hole is larger than the maximum diameter of the taper pin, so that the outer wall of the taper pin is not in contact with the gasket after the assembly, interference influence on the taper pin cannot be caused even after the gasket is polished, and subsequent maintenance work is facilitated.
The upper end of the taper pin is provided with a screw for locking the taper pin, and the screw is in threaded connection with the first inner ring; the purpose of this is: the axial movement of the taper pin can be limited through the screw, the taper pin is prevented from falling off, and the stability of the taper pin during working is improved.
The utility model has the advantages that: the utility model has the advantages of simple structure and reasonable design, convenient to use utilizes the screw thread cylindric lock to fix a position back with packing ring and second inner circle earlier, recycles the taper pin and realizes the location to first inner circle, packing ring and second inner circle, even after packing ring thickness size reduces like this, also only needs to join in marriage the pinhole of hinge second inner circle tip, has shortened the time to also can improve the processingquality of inner circle, be favorable to reducing the maintenance cost of enterprise.
Drawings
Fig. 1 is a plan view of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a cross-sectional view of B-B of FIG. 1 in accordance with the present invention;
fig. 4 is a structural view of a prior art tapered roller slewing bearing.
The labels in the figure are: 1. an inner ring; 101. a first inner race; 102. a second inner race; 103. a gasket; 2. an outer ring; 3. a connecting bolt; 4. a screw; 5. a taper pin; 6. a straight hole; 7. a roller; 8. a holder; 9. and (4) a threaded cylindrical pin.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in the figure, the super-huge double-row tapered roller slewing bearing comprises an inner ring 1, an outer ring 2 and a rolling body arranged between the inner ring 1 and the outer ring 2, wherein the inner ring 1 comprises a first inner ring 101, a second inner ring 102 and a gasket 103, the gasket 103 is arranged between the first inner ring 101 and the second inner ring 102, a threaded cylindrical pin 9 is arranged at the contact part of the second inner ring 102 and the gasket 103, the lower end of the threaded cylindrical pin 9 is connected inside the second inner ring 102 in a threaded manner, the upper end of the threaded cylindrical pin 9 extends to the position above the second inner ring 102, and the gasket 103 is sleeved on the threaded cylindrical pin 9 to position the gasket 103; a taper pin 5 for positioning a first inner ring 101 and a second inner ring 102 is installed in the inner ring 1, the taper pin 5 penetrates through a washer 103, a straight hole 6 is formed in the washer 103 at the position of the taper pin 5, the diameter of the straight hole 6 is larger than the maximum diameter of the taper pin 5, a screw 4 for locking the taper pin 5 is installed at the upper end of the taper pin 5, and the screw 4 is in threaded connection with the first inner ring 101.
A plurality of connecting bolts 3 for connecting the first inner ring 101, the washer 103 and the second inner ring 102 are installed in the thickness direction of the inner ring 1, and the plurality of connecting bolts 3 are uniformly distributed around the center of the first inner ring 101.
The number of the taper pins 5 is two, the number of the threaded cylindrical pins 9 is two, and a connecting line of centers of the two taper pins 5 and a connecting line of centers of the two threaded cylindrical pins 9 are neither perpendicular to each other nor parallel to each other, so that each taper pin 5 and each threaded cylindrical pin 9 are ensured to have unique mounting positions, and disorder caused by re-assembly after subsequent disassembly is avoided.
The rolling body comprises a retainer 8 and rollers 7, the rollers 7 are in a conical structure, the retainer 8 is in a conical annular structure, the retainer 8 and the rollers 7 are arranged in a gap between the inner ring 1 and the outer ring 2, the outer walls of the rollers 7 are respectively contacted with the inner ring 1 and the outer ring 2, the retainer 8 is used for keeping the distance between the two adjacent rollers 7 fixed, and the rollers 7 rotate along with the rotation of the inner ring 1 to drive the retainer 8 to rotate in the slewing bearing.
In the process of processing the slewing bearing, in order to ensure that the clearance of the roller 7 between the inner ring 1 and the outer ring 2 meets the design requirements, the upper and lower surfaces of the washer 103 can be matched and ground after the first 101 and the second inner rings 102 are processed, the threaded cylindrical pin 9 is installed on the second inner ring 102 after the matching and grinding is finished, the washer 103 is installed on the threaded cylindrical pin 9 in a matching manner, the washer 103 is positioned, and radial dislocation can be prevented from being generated in the process of installing the first 101; after the gasket 103 is positioned, the first inner ring 101 and the second inner ring 102 are positioned by using the taper pin 5, and at the moment, the first inner ring 101, the second inner ring 102 and the gasket 103 are positioned completely, and are locked by using the connecting bolt 3, so that the inner ring 1 is assembled; when the working raceways of the inner ring 1 and the outer ring 2 are worn, the screw 4 is detached, the taper pin 5 is pulled out, the first 101 and the second inner ring 102 are separated from the gasket 103, a worker can grind or replace the gasket 103 alone, the thickness of the gasket 103 is changed, the size of the pin hole where the original taper pin 5 is located cannot enable the taper pin 5 to reinforce the inner ring 1 again, and therefore the original pin hole needs to be processed by using a taper reamer, and the straight hole 6 in the thickness direction of the gasket 103 is larger than the maximum diameter of the taper pin 5, so that the pin hole above the second inner ring 102 only needs to be processed by using the reamer, and the processing difficulty can be greatly reduced.
An assembly method of an inner ring of an oversize double-row tapered roller slewing bearing comprises the following steps:
step one, mounting a threaded cylindrical pin 9; installing two threaded cylindrical pins 9 in threaded holes in the upper end face of the second inner ring 102, and after the installation is finished, protruding the upper cylindrical part of each threaded cylindrical pin 9 out of the surface of the upper end of the second inner ring 102;
step two, assembling the second inner ring 102 and the gasket 103; correspondingly installing through holes formed in the thickness direction of the gasket 103 on the two raised threaded cylindrical pins 9 in the first step to realize concentric assembly of the gasket 103 and the second inner ring 102;
and step three, connecting the first inner ring 101 and the second inner ring 102 by using the taper pin 5, wherein the taper pin 5 penetrates through a straight hole 6 formed in the thickness direction of the gasket 103 during connection, and after the taper pin 5 is installed, the screw 4 is installed on the first inner ring 101 to realize axial positioning of the taper pin 5.
Claims (5)
1. The utility model provides an oversize double-row tapered roller slewing bearing which characterized in that: the inner ring comprises a first inner ring, a second inner ring and a gasket, the gasket is arranged between the first inner ring and the second inner ring, a threaded cylindrical pin is arranged at the contact part of the second inner ring and the gasket, the lower end of the threaded cylindrical pin is connected in the second inner ring in a threaded manner, the upper end of the threaded cylindrical pin extends to the position above the second inner ring, and the gasket is sleeved on the threaded cylindrical pin to realize the positioning of the gasket; the inner ring is internally provided with a taper pin for positioning the first inner ring and the second inner ring, the taper pin penetrates through the gasket, a straight hole is formed in the gasket at the position where the taper pin is located, the diameter of the straight hole is larger than the maximum diameter of the taper pin, the upper end of the taper pin is provided with a screw for locking the taper pin, and the screw is in threaded connection with the first inner ring.
2. The super-large double-row tapered roller slewing bearing according to claim 1, wherein: and a plurality of connecting bolts for connecting the first inner ring, the gasket and the second inner ring are arranged in the thickness direction of the inner ring, and the connecting bolts are uniformly distributed around the center of the first inner ring.
3. The super-large double-row tapered roller slewing bearing according to claim 1, wherein: the number of the taper pins is two.
4. The super-large double-row tapered roller slewing bearing according to claim 1, wherein: the number of the threaded cylindrical pins is two.
5. The super-large double-row tapered roller slewing bearing according to claim 1, wherein: the rolling body comprises a retainer and a roller, and the roller is in a conical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921007434.9U CN210461440U (en) | 2019-07-01 | 2019-07-01 | Super-huge double-row tapered roller slewing bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921007434.9U CN210461440U (en) | 2019-07-01 | 2019-07-01 | Super-huge double-row tapered roller slewing bearing |
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| Publication Number | Publication Date |
|---|---|
| CN210461440U true CN210461440U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921007434.9U Active CN210461440U (en) | 2019-07-01 | 2019-07-01 | Super-huge double-row tapered roller slewing bearing |
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| CN (1) | CN210461440U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242675A (en) * | 2019-07-01 | 2019-09-17 | 洛阳新强联回转支承股份有限公司 | A kind of super-huge double-row conical pivoting support |
-
2019
- 2019-07-01 CN CN201921007434.9U patent/CN210461440U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242675A (en) * | 2019-07-01 | 2019-09-17 | 洛阳新强联回转支承股份有限公司 | A kind of super-huge double-row conical pivoting support |
| CN110242675B (en) * | 2019-07-01 | 2024-06-07 | 洛阳新强联回转支承股份有限公司 | Assembly method of oversized double-row tapered roller slewing bearing |
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