CN110242675B - Assembly method of oversized double-row tapered roller slewing bearing - Google Patents
Assembly method of oversized double-row tapered roller slewing bearing Download PDFInfo
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- CN110242675B CN110242675B CN201910584555.8A CN201910584555A CN110242675B CN 110242675 B CN110242675 B CN 110242675B CN 201910584555 A CN201910584555 A CN 201910584555A CN 110242675 B CN110242675 B CN 110242675B
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- inner ring
- gasket
- taper pin
- pin
- threaded cylindrical
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000003754 machining Methods 0.000 description 9
- 238000012856 packing Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C43/00—Assembling bearings
- F16C43/04—Assembling rolling-contact bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses an assembly method of an oversized double-row tapered roller slewing bearing, which comprises an inner ring, an outer ring and rolling bodies 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 at a position between the first inner ring and the second inner ring, a threaded cylindrical pin is arranged at a contact position between the second inner ring and the gasket, the lower end of the threaded cylindrical pin is in threaded connection with the inside of the second inner ring, and the upper end of the threaded cylindrical pin extends to the position above the second inner ring.
Description
Technical Field
The invention belongs to the technical field of slewing bearings, and particularly relates to an assembly method of an oversized double-row tapered roller slewing bearing.
Background
The slewing bearing, also called a turntable bearing, is widely applied in the real industry, is called a joint of a machine, and is an important transmission part necessary for a machine which needs to do relative slewing motion between two objects and simultaneously bear axial force, radial force and tipping moment. With the rapid development of the mechanical industry, the slewing bearing is widely applied to the industries of ship equipment, engineering machinery, light industrial machinery, metallurgical machinery, medical machinery, industrial machinery and the like.
For an oversized double-row tapered roller slewing bearing, the play 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 rollers 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 operation, the contact part of the inner ring and the outer ring is easy to wear in the rotating process of the tapered roller in the inner ring, so that the axial clearance and the radial clearance of the slewing bearing are increased, the instability of the slewing bearing is increased due to the increase of the clearance, and the service life of the slewing bearing is shortened. In order to solve the above problems, in the prior art, a structure of adding washers as shown in fig. 4 is adopted, so that during machining, precise control of play of the slewing bearing is achieved by means of matched grinding of the washers, and after the inner and outer rings of the slewing bearing are worn, the defect of increased play is also overcome by means of replacing the washers or matched grinding of the washers, and in the prior art, the first inner ring, the washers and the second inner ring are positioned by means of conical pins, however, the following defects exist in the structure: the main defect lies in that after the slewing bearing clearance is increased, in order to make first inner circle and second inner circle continue to use, can carry out abrasive machining to the packing ring in the middle, perhaps adopt the thinner packing ring to replace, and because whole inner circle adopts the taper pin location, after the packing ring thickness diminishes, need utilize the reamer to carry out the reprocessing to packing ring and the second inner circle taper hole of below to guarantee that the taper pin can install in the pinhole again, this kind of working method is not only inefficiency, and when the pinhole size causes 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
In order to solve the technical problems, the invention provides an assembly method of an oversized double-row tapered roller slewing bearing, which comprises the steps of positioning a gasket and a second inner ring by using a threaded cylindrical pin, and positioning the first inner ring, the gasket and the second inner ring by using a taper pin, so that even if the thickness of the gasket is reduced, only a pin hole at the end part of the second inner ring is required to be hinged, the time is shortened, the processing quality of the inner ring is improved, and the maintenance cost of enterprises is reduced.
The technical scheme adopted by the invention is as follows: the assembly method of the oversized double-row tapered roller slewing bearing comprises an inner ring, an outer ring and rolling bodies 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 at a position between the first inner ring and the second inner ring, a threaded cylindrical pin is arranged at a contact position between the second inner ring and the gasket, the lower end of the threaded cylindrical pin is in threaded connection with the inside of the second inner ring, the upper end of the threaded cylindrical pin extends to the upper position of the second inner ring, and the gasket is sleeved on the threaded cylindrical pin to realize positioning of the gasket; the inner part of the inner ring is provided with a taper pin used 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 and located 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 used for locking the taper pin, and the screw is in threaded connection with the first inner ring.
And a plurality of connecting bolts used 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 rollers, and the rollers are of conical structures.
An assembly method of an inner ring of an oversized double-row tapered roller slewing bearing comprises the following steps:
Step one, installing a threaded cylindrical pin; installing two threaded cylindrical pins in the threaded holes on the upper end surface of the second inner ring, wherein after the installation is completed, the upper cylindrical part of the threaded cylindrical pins protrudes out of the upper surface of the second inner ring;
Step two, assembling a second inner ring and a gasket; correspondingly mounting through holes formed in the thickness direction of the gasket on the two raised threaded cylindrical pins in the first step, so as to realize concentric assembly of the gasket and the second inner ring;
And thirdly, connecting the first inner ring with the second inner ring by using a taper pin, penetrating a straight hole formed in the thickness direction of the gasket by the taper pin during connection, and installing a screw on the first inner ring after the taper pin is installed, so that the axial positioning of the taper pin is realized.
In the slewing bearing machining process, in order to ensure that the clearance between the inner ring and the outer ring of the roller meets the design requirement, the upper surface and the lower surface of the gasket can be subjected to matched grinding after the first inner ring and the second inner ring are machined, the threaded cylindrical pin is arranged on the second inner ring after the matched grinding is finished, and then the gasket is matched and arranged on the threaded cylindrical pin, so that the positioning of the gasket is realized, and radial dislocation in the process of arranging the first inner ring can be prevented; after the gasket is positioned, positioning the first inner ring and the second inner ring by using the taper pin, wherein the positioning of the first inner ring, the second inner ring and the gasket is completed, and locking the three by using the connecting bolt, so that the inner ring assembly is completed; when the working rollaway nest of inner circle, outer lane produces wearing and tearing phenomenon, dismantle the screw, the taper pin pulls out, and first inner circle, second inner circle and packing ring separation, and the staff can carry out abrasive machining or replacement to the packing ring alone, because the 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, consequently, 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 at a position between the first inner ring and the second inner ring; the purpose of this arrangement is: the gasket is added, so that the processing difficulty of the slewing bearing inner ring can be reduced, and the requirement of the size can be met only by adopting a matched grinding mode for the gasket when the precision processing is carried out, so that the processing time of the whole inner ring can be shortened; after the play of the slewing bearing is increased, the defect of the increase of the play can be overcome by disassembling and regrinding the gasket, so that 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 in threaded connection with the inside of the second inner ring, the upper end of the threaded cylindrical pin extends to the upper position of the second inner ring, and the gasket is sleeved on the threaded cylindrical pin to realize positioning of the gasket; the purpose of this arrangement is: the second inner ring and the gasket can be positioned during assembly, the gasket is prevented from being offset in the radial direction and the circumferential direction, and then the first inner ring is assembled, so that 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 used 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 arrangement is: after the second inner ring and the gasket are positioned mutually, positioning between the first inner ring and the second inner ring is realized by using a taper pin, so that positioning of the whole inner ring is completed; after the assembly is completed, 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 contacted with the gasket after the assembly, and the interference influence on the taper pin is avoided even after the gasket is polished, thereby being convenient for subsequent maintenance work.
The upper end of the taper pin is provided with a screw used for locking the taper pin, and the screw is connected with the first inner ring in a threaded manner; the purpose of this arrangement is: the axial movement of the taper pin can be limited through the screw, so that the taper pin is prevented from falling off, and the stability of the taper pin during working is improved.
The beneficial effects of the invention are as follows: the invention has simple structure, reasonable design and convenient use, the gasket and the second inner ring are positioned by the threaded cylindrical pin, and then the first inner ring, the gasket and the second inner ring are positioned by the conical pin, so that even if the thickness of the gasket is reduced, only the pin hole at the end part of the second inner ring is needed to be hinged, the time is shortened, the processing quality of the inner ring is improved, and the maintenance cost of enterprises is reduced.
Drawings
FIG. 1 is a plan view of the present invention;
FIG. 2 is a cross-sectional view of 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 tapered roller slewing bearing in the prior art.
The marks in the figure: 1. an inner ring; 101. a first inner ring; 102. a second inner ring; 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 retainer; 9. a threaded cylindrical pin.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the drawings.
As shown in the figure, the assembling method of the oversized double-row tapered roller slewing bearing comprises an inner ring 1, an outer ring 2 and rolling bodies 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 at a position between the first inner ring 101 and the second inner ring 102, a threaded cylindrical pin 9 is arranged at a contact part between the second inner ring 102 and the gasket 103, the lower end of the threaded cylindrical pin 9 is in threaded connection inside the second inner ring 102, 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 realize positioning of the gasket 103; a taper pin 5 for positioning the first inner ring 101 and the second inner ring 102 is arranged in the inner ring 1, the taper pin 5 penetrates through the gasket 103, a straight hole 6 is formed in the gasket 103 and located 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 arranged 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 ring 101, the washer 103 and the second ring 102 are arranged in the thickness direction of the inner ring 1, and the connecting bolts 3 are uniformly distributed around the center of the first ring 101.
The number of the taper pins 5 is two, the number of the threaded cylindrical pins 9 is also two, and the connecting lines of the centers of the two taper pins 5 and the connecting lines of the 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 have unique mounting positions, and confusion is avoided during subsequent reassembling.
The rolling body comprises a retainer 8 and rollers 7, the rollers 7 are of conical structures, the retainer 8 is of 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 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 slewing bearing machining, in order to ensure that the clearance between the inner ring 1 and the outer ring 2 of the roller 7 meets the design requirement, the upper surface and the lower surface of the washer 103 can be subjected to matched grinding after the first ring 101 and the second ring 102 are machined, the threaded cylindrical pin 9 is arranged on the second ring 102 after the matched grinding is finished, and then the washer 103 is matched and arranged on the threaded cylindrical pin 9, so that the washer 103 is positioned, and radial dislocation in the process of arranging the first ring 101 can be prevented; 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 the positioning of the first inner ring 101, the second inner ring 102 and the gasket 103 is completed, and the three are locked by using the connecting bolt 3, so that the inner ring 1 is assembled; when the working rollaway nest of the inner ring 1 and the outer ring 2 generates abrasion phenomenon, the screw 4 is disassembled, the taper pin 5 is pulled out, the first inner ring 101 and the second inner ring 102 are separated from the gasket 103, a worker can independently grind or replace the gasket 103, the original taper pin 5 cannot reinforce the inner ring 1 again due to the thickness change of the gasket 103, the original taper pin 5 is required to be machined by the 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 machining difficulty can be greatly reduced by only machining the pin hole above the second inner ring 102 by the reamer.
An assembly method of an inner ring of an oversized double-row tapered roller slewing bearing comprises the following steps:
Step one, mounting a threaded cylindrical pin 9; two threaded cylindrical pins 9 are installed in threaded holes on the upper end face of the second inner ring 102, and after the installation is completed, the upper cylindrical part of each threaded cylindrical pin 9 protrudes out of the upper end surface of the second inner ring 102;
Step two, assembling the second inner ring 102 and the gasket 103; correspondingly mounting through holes formed in the thickness direction of the gasket 103 on the two raised threaded cylindrical pins 9 in the first step, so as to realize concentric assembly of the gasket 103 and the second inner ring 102;
step three, the first inner ring 101 and the second inner ring 102 are connected by using the taper pin 5, when the taper pin 5 is connected, the taper pin 5 penetrates through the straight hole 6 formed in the thickness direction of the gasket 103, and after the taper pin 5 is installed, the screw 4 is installed on the first inner ring 101, so that the axial positioning of the taper pin 5 is realized.
Claims (5)
1. An assembly method of an oversized double-row tapered roller slewing bearing is characterized by comprising the following steps: the rolling element comprises an inner ring, an outer ring and rolling elements 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 at a position between the first inner ring and the second inner ring, a threaded cylindrical pin is arranged at a contact position between the second inner ring and the gasket, the lower end of the threaded cylindrical pin is in threaded connection with the inside of the second inner ring, the upper end of the threaded cylindrical pin extends to the upper position of the second inner ring, and the gasket is sleeved on the threaded cylindrical pin to realize positioning of the gasket; a taper pin used for positioning the first inner ring and the second inner ring is arranged in the inner ring, the taper pin penetrates through the gasket, a straight hole is formed in the gasket at the position of the taper pin, the diameter of the straight hole is larger than the maximum diameter of the taper pin, a screw used for locking the taper pin is arranged at the upper end of the taper pin, and the screw is connected with the first inner ring in a threaded manner;
the assembly method of the inner ring comprises the following steps:
Step one, installing a threaded cylindrical pin; installing two threaded cylindrical pins in the threaded holes on the upper end surface of the second inner ring, wherein after the installation is completed, the upper cylindrical part of the threaded cylindrical pins protrudes out of the upper surface of the second inner ring;
Step two, assembling a second inner ring and a gasket; correspondingly mounting through holes formed in the thickness direction of the gasket on the two raised threaded cylindrical pins in the first step, so as to realize concentric assembly of the gasket and the second inner ring;
And thirdly, connecting the first inner ring with the second inner ring by using a taper pin, penetrating a straight hole formed in the thickness direction of the gasket by the taper pin during connection, and installing a screw on the first inner ring after the taper pin is installed, so that the axial positioning of the taper pin is realized.
2. The method for assembling the oversized double-row tapered roller slewing bearing according to claim 1, wherein the method comprises the following steps: and a plurality of connecting bolts used 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 method for assembling the oversized double-row tapered roller slewing bearing according to claim 1, wherein the method comprises the following steps: the number of taper pins is two.
4. The method for assembling the oversized double-row tapered roller slewing bearing according to claim 1, wherein the method comprises the following steps: the number of the threaded cylindrical pins is two.
5. The method for assembling the oversized double-row tapered roller slewing bearing according to claim 1, wherein the method comprises the following steps: the rolling body comprises a retainer and rollers, and the rollers are of conical structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910584555.8A CN110242675B (en) | 2019-07-01 | 2019-07-01 | Assembly method of oversized double-row tapered roller slewing bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910584555.8A CN110242675B (en) | 2019-07-01 | 2019-07-01 | Assembly method of oversized double-row tapered roller slewing bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110242675A CN110242675A (en) | 2019-09-17 |
| CN110242675B true CN110242675B (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910584555.8A Active CN110242675B (en) | 2019-07-01 | 2019-07-01 | Assembly method of oversized double-row tapered roller slewing bearing |
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| CN (1) | CN110242675B (en) |
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| CN110242675A (en) | 2019-09-17 |
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