CN114483775A - Slewing bearing and assembling method thereof - Google Patents
Slewing bearing and assembling method thereof Download PDFInfo
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- CN114483775A CN114483775A CN202210104763.5A CN202210104763A CN114483775A CN 114483775 A CN114483775 A CN 114483775A CN 202210104763 A CN202210104763 A CN 202210104763A CN 114483775 A CN114483775 A CN 114483775A
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- retainer
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- 238000000034 method Methods 0.000 title claims description 7
- 238000013016 damping Methods 0.000 claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 150000001875 compounds Chemical group 0.000 claims 1
- 230000001788 irregular Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000005641 tunneling Effects 0.000 description 9
- 239000003245 coal Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Classifications
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- 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/50—Other types of ball or roller bearings
- F16C19/505—Other types of ball or roller bearings with the diameter of the rolling elements of one row differing from the diameter of those of another row
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- 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
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
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- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/581—Raceways; Race rings integral with other parts, e.g. with housings or machine elements such as shafts or gear wheels
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- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
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- 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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- 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
- F16C43/06—Placing rolling bodies in cages or bearings
- F16C43/065—Placing rolling bodies in cages or bearings in cages
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention provides a slewing bearing which is a brand new structure different from the traditional slewing bearing, and the third outer ring is arranged to ensure that one outer ring is arranged corresponding to one retainer, so that the working performance of the slewing bearing under high-strength irregular impact load is improved, the fault of the slewing bearing is avoided, and the normal production and operation of a heading machine are ensured. The invention also arranges a damping device between the first outer ring and the third outer ring to reduce the vibration transmission caused by the maximum load in front, thereby further improving the stability of the slewing bearing.
Description
Technical Field
The invention relates to the technical field of bearing structures, in particular to a slewing bearing and an assembling method thereof.
Background
With the increasing maturity of the underground coal mine roadway tunneling technology and the rapid development of modern coal mine mechanical equipment, the tunneling machine is used as important equipment for coal mine roadway tunneling, has the advantages of safety, reliable work, flexible operation and the like, and is widely applied to coal mine roadway tunneling.
When the heading machine performs heading operation, the cutting head can be continuously impacted by rocks and a coal wall, wherein the rotary table is used as a core component of the heading machine and is one of the parts of the heading machine which are most seriously impacted by heavy load. The rotary table is a central system for the rotary operation of the heading machine in the tunneling operation of a roadway, not only bears the function of connecting the cutting part and the body part, but also bears the weight of the cutting part, and a key component for realizing the left-right swinging of the cutting part is a rotary support. The slewing bearing is very easy to be damaged by high-strength and irregular impact load in tunneling, the slewing bearing needs to be replaced or overhauled when the slewing bearing breaks down in tunneling, and the complex underground environment brings great burden and test for maintainers.
Therefore, how to optimize the structural design of the slewing bearing for the heading machine, improve the working performance of the slewing bearing under high-strength irregular impact load, avoid the occurrence of slewing bearing faults and ensure the normal production and operation of the heading machine is a problem to be solved urgently by technical staff in the field at present.
Disclosure of Invention
In order to solve the problems, the invention provides a slewing bearing and an assembling method thereof, aiming at optimizing the structural design of the slewing bearing for the heading machine, improving the working performance of the slewing bearing under high-strength irregular impact load, avoiding the occurrence of slewing bearing faults and ensuring the normal production and operation of the heading machine, and the specific technical scheme is as follows:
a slewing bearing comprises a first outer ring, a second outer ring, a third outer ring and an inner ring, wherein the first outer ring, the second outer ring and the inner ring are detachably connected to form an accommodating cavity for accommodating the third outer ring; a groove is formed in the contact surface of the first outer ring and the third outer ring, the groove is formed in the first outer ring or the third outer ring, and an elastic damping device is embedded in the groove; the damping device is in contact with the first outer ring or the third outer ring to reduce vibration transmission between the first outer ring and the third outer ring.
A right pushing retainer and a right pushing roller are arranged between the first outer ring and the inner ring, and the right pushing roller is embedded in the right pushing retainer; a left-pushing retainer and a left-pushing roller are arranged between the second outer ring and the inner ring, and the left-pushing roller is embedded in the left-pushing retainer; and a forward-push retainer and a forward-push roller are arranged between the third outer ring and the inner ring, and the forward-push roller is embedded in the forward-push retainer.
Preferably, the damping device comprises at least three disc springs which are arranged in parallel, and the disc springs are in an involutory combination form.
Preferably, the damping device further comprises a guide element arranged between the disc springs, and the bottom of the groove is provided with a guide groove for guiding the guide element; one end of the disk spring is arranged at the bottom of the groove, and the other end of the disk spring is arranged on the guide element.
Preferably, the contact surface of the guide element and the third outer ring is a spherical surface.
Preferably, a support plate is arranged between the disk spring and the bottom of the groove and between the disk spring and the guide element.
Preferably, the support plate is a hard plate subjected to surface hardening treatment, the end part of the disc spring is arranged at the center of the support plate, and the diameter of the support plate is 1.05-1.10 times larger than the outer diameter of the disc spring.
Preferably, the contact surface of the first outer ring and the third outer ring is provided with a limiting damping strip.
Preferably, an inclined chamfer is arranged on a contact surface of the third outer ring and the first outer ring.
Preferably, the diameter of the right pushing roller is 1.1-1.5 times of the diameter of the left pushing roller; the length of the right pushing roller is 1.1-1.5 times of the length of the left pushing roller.
The invention also provides an assembling method for the slewing bearing, which comprises the following steps:
firstly, a first outer ring is flatly placed on a workbench;
secondly, sequentially placing the right-push retainer on the first outer ring, and simultaneously sequentially placing the right-push rollers in the right-push retainer, so that the right-push retainer is abutted against the first outer ring;
thirdly, mounting the damping device in a groove of the first outer ring or the third outer ring;
fourthly, coaxially aligning the third outer ring with the first outer ring and installing the third outer ring;
fifthly, placing the inner ring on the right push roller, and fixing the positions of the third outer ring and the inner ring by means of the front push roller to ensure that the third outer ring and the inner ring are concentric;
sixthly, sequentially loading forward-push rollers into the forward-push retainer, and sequentially placing the forward-push retainer and the forward-push rollers into the third outer ring;
seventhly, sequentially placing left-push retainers on the inner ring, sequentially placing left-push rollers in the left-push retainers, and enabling the left-push retainers to be close to the inner ring;
and eighthly, attaching a second outer ring to the first outer ring coaxially, and connecting the first outer ring and the second outer ring.
The technical scheme of the invention has the following beneficial effects:
the slewing bearing with a brand new structure is provided, and the third outer ring is arranged to ensure that one outer ring is arranged corresponding to one retainer, so that the working performance of the slewing bearing under high-strength irregular impact load is improved, the fault of the slewing bearing is avoided, and the normal production and operation of the development machine are ensured.
According to the invention, the first outer ring is provided with the damping device, so that impact load in the radial direction can be buffered, and the influence of the impact load on abrasion can be reduced.
In the invention, the guide element can be matched with the guide groove on the first outer ring, so that the fixing of the damping device is facilitated, the inclination of the damping device is prevented, and the effective damping effect is realized.
The forward-pushing retainer is clamped and fixed by the first outer ring and the second outer ring and only collides with the flange surface, so that the damage to the raceway surface is avoided.
The third outer ring is provided with the inclined chamfer, so that the third outer ring is matched with the head of the guide element conveniently, and the third outer ring is centered and installed.
According to the invention, the surface of the third outer ring is quenched, so that the surface hardness is enhanced, and the bearing capacity of the third outer ring is improved.
According to the invention, the limiting damping strip is arranged between the first outer ring and the third outer ring, so that the relative rotation of the outer rings is limited and the damping effect is enhanced.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a slewing bearing structure;
FIG. 2 is a schematic view of a shock absorber device;
fig. 3 is an enlarged schematic view of a third outer ring fixing structure.
The damping device comprises a first outer ring 1, a second outer ring 2, a third outer ring 3, an inner ring 4, a forward pushing roller 5, a right pushing roller 6, a left pushing roller 7, a forward pushing retainer 8, a right pushing retainer 9, a left pushing retainer 10, a damping device 11, a supporting plate 111, a guide element 112, a disc spring 113 and a limiting damping strip 12.
Detailed Description
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
The traditional slewing bearing comprises two outer rings, an inner ring, three rows of rollers and three rows of retainers, wherein the rollers are embedded into the retainers, the retainers are arranged in ferrules, the diameter surfaces of the ferrules, which are in contact with the rollers, are raceway surfaces, and the diameter surfaces guiding the retainers to move are flange surfaces. During the operation of the slewing bearing, the front part of the slewing bearing bears a great radial load, and the left part and the right part also bear a great axial load and a great overturning moment. When the heading machine is in forward heading operation, the slewing bearing bears high-strength irregular impact loads, and the impact loads are very easy to aggravate abrasion between the roller and the raceway surface and accelerate fatigue failure of the slewing bearing.
In order to solve the above problems, the present embodiment proposes a slewing bearing, and with particular reference to fig. 1, the slewing bearing includes a first outer ring 1, a second outer ring 2, a third outer ring 3 and an inner ring 4, the first outer ring 1, the second outer ring 2 and the inner ring 4 are detachably connected to each other and form a receiving cavity for receiving the third outer ring 3; a groove is formed in the contact surface of the first outer ring 1 and the third outer ring 3, the groove is formed in the first outer ring 1 or the third outer ring 3, and an elastic damping device 11 is embedded in the groove; the damping device 11 is in contact with the first outer ring 1 or the third outer ring 3 to reduce vibration transmission between the first outer ring 1 and the third outer ring 3. The grooves of the present embodiment are preferably provided on the first outer ring 1.
Specifically, a right pushing retainer 9 and a right pushing roller 6 are arranged between the first outer ring 1 and the inner ring 4, and the right pushing roller 6 is embedded in the right pushing retainer 9; a left pushing retainer 10 and a left pushing roller 7 are arranged between the second outer ring 2 and the inner ring 4, and the left pushing roller 7 is embedded in the left pushing retainer 10; a forward-push retainer 8 and a forward-push roller 5 are arranged between the third outer ring 3 and the inner ring 4, and the forward-push roller 5 is embedded in the forward-push retainer 8.
It should be noted that, in order to prevent the impact load from driving the forward-push retainer 8 to impact the raceway surface, the forward-push retainer 8 is embedded between the first outer ring 1 and the second outer ring 2, so that the forward-push retainer 8 does not directly contact the raceway surface. When the vibration is acted, the forward-push retainer 8 has the vibration in the front-back direction and is limited by the grooves of the first outer ring 1 and the second outer ring 2, and the forward-push retainer 8 only collides with the flange surface, so that the damage to the raceway surface is avoided. In the present embodiment, both the damper surface and the raceway surface of the third outer ring 3 are subjected to quenching treatment.
Referring to fig. 2 in detail, preferably, the damping device 11 includes at least three disc springs 113 arranged in parallel, and the preferred disc springs 113 of this embodiment are in a involution combination. It should be noted that, the involution combination form is that a group of single disc springs are involuted alternately according to different directions for use.
Preferably, the shock absorbing device 11 further comprises a guide element 112 arranged between the disc springs 113, and the bottom of the groove is provided with a guide groove for guiding the guide element 112; the belleville springs 113 are disposed at one end at the bottom of the groove and at the other end on the guide member 112. The preferred guide element 112 of this embodiment is an umbrella structure, and the belleville spring 113 is disposed parallel to the umbrella stem and has one end connected to the umbrella cap.
Preferably, the contact surface of the guide element 112 and the third outer ring 3 is a spherical surface. The spherical design of the guide elements 112 facilitates the assembly of the third outer ring 3.
Preferably, a support plate 111 is provided between the disk spring 113 and the bottom of the groove and between the disk spring 113 and the guide element 112. The support plate 111 preferred in this embodiment is used to assist the compression of the disc spring 113, so that the disc spring 113 has enough support surface when being compressed, and it is ensured that the disc spring 113 is stressed uniformly and does not tilt.
Preferably, the surface of the support plate 111 is hardened, and the diameter of the support plate 111 is 1.05 to 1.10 times larger than the outer diameter of the disc spring 113. The size of the support plate 111 is larger than the outer diameter of the disc spring 113, which is beneficial to fixing the disc spring 113 and preventing the disc spring 113 from inclining due to uneven stress when being compressed.
Preferably, the contact surface of the first outer ring 1 and the third outer ring 3 is provided with a limit damping strip 12. As shown in fig. 3, the preferred limiting damping strip 12 of the present embodiment is in a rectangular parallelepiped shape, and is made of a silicone material, and is in interference fit with the grooves of the first outer ring 1 and the third outer ring 3. The limiting damping strips 12 are used for preventing circumferential sliding between the first outer ring 1 and the third outer ring 3 and driving the damping device 11 to slightly incline so as to influence the normal work of the damping device 11. On one hand, the limiting damping strips 12 can effectively limit the relative rotation between the first outer ring 1 and the third outer ring 3, on the other hand, the limiting damping strips 12 can supplement the damping function of the damping device 11, so that the impact resistance of the slewing bearing is further improved.
Preferably, an inclined chamfer is arranged on the contact surface of the third outer ring 3 and the first outer ring 1. The oblique chamfer provided on the third outer ring 3 in this embodiment facilitates the assembly of the third outer ring 3.
Preferably, the diameter of the right pushing roller 6 is 1.1-1.5 times of the diameter of the left pushing roller 7; the length of the right pushing roller 6 is 1.1-1.5 times of the length of the left pushing roller 7. When the heading machine performs heading operation, the forward thrust roller 5 bears forward radial load and mainly supports forward heading of the slewing bearing. The right pushing roller 6 bears the axial load when the right-hand tunneling machine rotates rightwards, and the left pushing roller 7 bears the overturning moment generated when the right-hand tunneling machine rotates rightwards and the smaller axial load when the original position is restored.
In addition, the present embodiment also provides an assembling method for the slewing bearing, including the following steps:
firstly, a first outer ring 1 is stably placed on a workbench, and the raceway surface of the first outer ring 1 faces upwards.
And secondly, sequentially placing the right-push retainer 9 on the track surface of the first outer ring 1, and simultaneously sequentially placing the right-push rollers 6 in the right-push retainer 9, so that the right-push retainer 9 is abutted against the guide surface.
And thirdly, sequentially installing the damping devices 11 in the grooves of the first outer ring 1 or the third outer ring 3 to ensure that the disc springs 113 in the damping devices 11 are tightly attached to the two support plates 111.
Fourthly, coaxially aligning the third outer ring 3 with the first outer ring 1, and installing the third outer ring 3 by utilizing an oblique chamfer angle of the third outer ring 3 to assist a positive binding surface; the inner ring 4 is placed on the right pushing roller 6, and the distance between the third outer ring 3 and the inner ring 4 is determined by the aid of the front pushing roller 5, so that the third outer ring 3 and the inner ring 4 are concentric.
And fifthly, sequentially loading the forward-push rollers 5 into the forward-push retainer 8, and sequentially placing the forward-push retainer 8 and the forward-push rollers 5 into the grooves of the first outer ring 1.
Sixthly, sequentially placing the left-push retainer 10 on the upward track surface of the inner ring 4, sequentially placing the left-push rollers 7 in the left-push retainer 10, and enabling the left-push retainer 10 to be close to the flange surface of the inner ring 4.
And seventhly, enabling the raceway surface of the second outer ring 2 to face downwards, and using the bolt to connect the first outer ring 1 and the second outer ring 2 in coaxial fit with the first outer ring 1.
The embodiment provides a slewing bearing, slewing bearing has the brand-new structure that is different from traditional slewing bearing, guarantees that an outer lane corresponds a holder setting through setting up the third outer lane, has improved slewing bearing working property under high strength, irregular impact load, avoids the emergence of slewing bearing trouble, guarantees the normal production and the operation of entry driving machine. In the embodiment, a damping device is arranged between the first outer ring and the third outer ring to reduce vibration transmission caused by the maximum load in front, so that the stability of the slewing bearing is further improved.
The invention aims to optimize the structural design of the slewing bearing for the heading machine, improve the working performance of the slewing bearing under high-strength irregular impact load, avoid the occurrence of slewing bearing faults and ensure the normal production and operation of the heading machine. Therefore, in order to improve the reliability of the slewing bearing and prolong the service life of the heading machine, the number of the damping devices and the number of the disc springs can be appropriately changed, the shape of the guide element can be changed, and the shape of the third outer ring can be adjusted to facilitate installation, and the invention is not limited to the embodiment shown in the embodiment. Equivalents and modifications may be made without departing from the spirit of the disclosure, which is to be considered as within the scope of the invention.
Claims (10)
1. A slewing bearing is characterized by comprising a first outer ring (1), a second outer ring (2), a third outer ring (3) and an inner ring (4), wherein the first outer ring (1), the second outer ring (2) and the inner ring (4) are detachably connected to form an accommodating cavity for accommodating the third outer ring (3); a groove is formed in the contact surface of the first outer ring (1) and the third outer ring (3), the groove is formed in the first outer ring (1) or the third outer ring (3), and an elastic damping device (11) is embedded in the groove; the damping device (11) is in contact with the first outer ring (1) or the third outer ring (3) to reduce vibration transmission between the first outer ring (1) and the third outer ring (3);
a right-push retainer (9) and a right-push roller (6) are arranged between the first outer ring (1) and the inner ring (4), and the right-push roller (6) is embedded in the right-push retainer (9); a left-push retainer (10) and a left-push roller (7) are arranged between the second outer ring (2) and the inner ring (4), and the left-push roller (7) is embedded in the left-push retainer (10); the third outer ring (3) and the inner ring (4) are provided with a forward-push retainer (8) and a forward-push roller (5), and the forward-push roller (5) is embedded in the forward-push retainer (8).
2. A slewing bearing according to claim 1, characterized in that the damping means (11) comprise at least three belleville springs (113) arranged in parallel, the belleville springs (113) being in a compound form.
3. A slewing bearing according to claim 2, characterized in that the damping device (11) further comprises a guide element (112) arranged in the middle of a belleville spring (113), the bottom of the groove being provided with a guide groove for guiding the guide element (112); one end of the disk spring (113) is arranged at the bottom of the groove, and the other end of the disk spring is arranged on the guide element (112).
4. A slewing bearing according to claim 3, characterized in that the contact surface of the guide element (112) with the third outer ring (3) is spherical.
5. A slewing bearing according to claim 4, characterized in that a support plate (111) is provided between the disc spring (113) and the bottom of the groove and between the disc spring (113) and the guide element (112).
6. A slewing bearing according to claim 5, characterized in that the supporting plate (111) is a hard plate that is hard-faced; the end part of the disc spring (113) is arranged at the center of the support plate (111), and the diameter of the support plate (111) is 1.05-1.10 times larger than the outer diameter of the disc spring (113).
7. A slewing bearing according to claim 6, characterized in that the contact surfaces of the first outer ring (1) and the third outer ring (3) are provided with limit damping bars (12).
8. A slewing bearing according to claim 1, characterized in that the contact surface of the third outer ring (3) with the first outer ring (1) is provided with a chamfer.
9. The slewing bearing according to claim 1, characterized in that the diameter of the right-hand push roller (6) is 1.1-1.5 times the diameter of the left-hand push roller (7); the length of the right pushing roller (6) is 1.1-1.5 times that of the left pushing roller (7).
10. A method of assembling a slewing bearing according to any one of claims 1-9, comprising the steps of:
firstly, a first outer ring (1) is flatly placed on a workbench;
secondly, sequentially placing the right-push retainer (9) on the first outer ring (1), simultaneously sequentially placing the right-push roller (6) in the right-push retainer (9), and enabling the right-push retainer (9) to abut against the first outer ring (1);
thirdly, mounting the damping device (11) in a groove of the first outer ring (1) or the third outer ring (3);
fourthly, the third outer ring (3) and the first outer ring (1) are coaxially aligned to be installed on the third outer ring (3);
fifthly, placing the inner ring (4) on the right pushing roller (6), and fixing the positions of the third outer ring (3) and the inner ring (4) by means of the forward pushing roller (5) to ensure that the third outer ring (3) and the inner ring (4) are concentric;
sixthly, sequentially loading forward-push rollers (5) into the forward-push retainer (8), and sequentially placing the forward-push retainer (8) and the forward-push rollers (5) into the third outer ring (3);
seventhly, sequentially placing left-push retainers (10) on the inner ring (4), sequentially placing left-push rollers (7) in the left-push retainers (10), and enabling the left-push retainers (10) to be close to the inner ring (4);
and eighthly, coaxially attaching a second outer ring (2) to the first outer ring (1) and connecting the first outer ring (1) and the second outer ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104763.5A CN114483775B (en) | 2022-01-28 | 2022-01-28 | Slewing bearing and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104763.5A CN114483775B (en) | 2022-01-28 | 2022-01-28 | Slewing bearing and assembling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114483775A true CN114483775A (en) | 2022-05-13 |
| CN114483775B CN114483775B (en) | 2024-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210104763.5A Active CN114483775B (en) | 2022-01-28 | 2022-01-28 | Slewing bearing and assembling method thereof |
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| DE10119890C1 (en) * | 2001-04-24 | 2002-09-05 | Skf Ab | Roller bearing has two part roller cage with two part end ring section of larger diameter |
| JP2008144879A (en) * | 2006-12-11 | 2008-06-26 | Nsk Ltd | Retainer for rolling bearing and rolling bearing |
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|---|---|
| CN114483775B (en) | 2024-09-10 |
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