CN218935045U

CN218935045U - Slewing bearing base

Info

Publication number: CN218935045U
Application number: CN202222960363.2U
Authority: CN
Inventors: 张乃鹏; 张伟; 虞明忠
Original assignee: Jiangsu Tengyan Engineering Technology Co ltd
Current assignee: Jiangsu Tengyan Engineering Technology Co ltd
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-04-28
Anticipated expiration: 2032-11-08

Abstract

The utility model relates to the technical field of slewing bearings, in particular to a slewing bearing base, which comprises an outer ring and an inner ring, wherein the inner ring is positioned inside the outer ring, rollways are formed in the inner side wall of the outer ring and the outer side wall of the inner ring, two rolling mechanisms are arranged between the two rollways, an oiling mechanism is arranged in the inner side wall of the inner ring, the oiling mechanism comprises a swivel, an annular chute is formed in the inner side wall of the inner ring, the swivel is rotationally sleeved inside the annular chute, a plurality of communication holes are uniformly formed in the inner side wall of the annular chute, and the interiors of the communication holes are communicated with the interiors of the two rollways. According to the utility model, oil enters the rollaway nest from the plurality of communication holes by injecting oil from the oil injection hole and rotating the swivel, so that the oil is dispersed more uniformly, the time for self-lubricating during rotation of the slewing bearing is reduced, and meanwhile, the periphery of the rollaway nest is supported by the independent runner or roller by utilizing the runner and the roller, so that the whole slewing bearing is smoother and more stable during rotation.

Description

Slewing bearing base

Technical Field

The utility model relates to the technical field of slewing bearings, in particular to a slewing bearing base.

Background

The slewing bearing is a novel mechanical part, is a large-sized bearing capable of bearing comprehensive load, and can bear larger axial and radial loads and overturning moment at the same time, so that the slewing bearing is widely applied to bases of mechanical equipment and is widely used;

the slewing bearing is mainly composed of an outer ring, an inner ring and rolling bodies, wherein the outer ring is sleeved outside the inner ring, and the inner ring and the outer ring are coaxially arranged. Semicircular rollaway nest are arranged on adjacent side walls of the inner ring and the outer ring, balls are filled between the two rollaway nest, so that the inner ring and the outer ring of the slewing bearing can rotate relatively, the balls roll in the annular space during rotation to reduce friction force between the inner ring and the outer ring, meanwhile, the balls are used for restraining the inner ring and the outer ring, and the inner ring and the outer ring are separated from each other, so that the slewing bearing structure requires higher matching precision between all parts in the slewing bearing structure.

However, the general slewing bearing is operated by using round metal beads, belongs to point contact, has small bearing area, is easy to generate mechanical damage under the condition of high-speed operation, is more inconvenient to process the round metal beads, needs to push an outer ring or an inner ring of the slewing bearing when lubricating oil is injected into the general slewing bearing, then rotates the inner ring or the outer ring of the slewing bearing to enable internal rolling bodies to adhere and clamp grease to move along a roller path for self lubrication, and when the large slewing bearing is used for oiling, if no external tool is used for assisting, workers can only push the outer ring or the inner ring manually, push the inner ring or the outer ring of the slewing bearing again after oiling is finished, needs to push the slewing bearing twice, and is more laborious and inconvenient.

Disclosure of Invention

In order to overcome the technical problems, the utility model aims to provide a slewing bearing base, oil enters a rollaway nest from a plurality of communication holes by injecting oil from an oil injection hole and rotating a swivel, so that the oil is dispersed more uniformly, a user does not need to push an inner ring or an outer ring to rotate during oil injection, and meanwhile, the periphery of the rollaway nest is supported by an independent runner or a roller by utilizing the runner and the roller, so that the whole slewing bearing is smoother during rotation.

The aim of the utility model can be achieved by the following technical scheme:

the slewing bearing base comprises an outer ring and an inner ring, wherein the inner ring is positioned inside the outer ring, rollaway nest is arranged on the inner side wall of the outer ring and the outer side wall of the inner ring, two rolling mechanisms are arranged between the two rollaway nest, and an oiling mechanism is arranged on the inner side wall of the inner ring;

the oiling mechanism comprises a swivel, an annular chute is formed in the inner side wall of the inner ring, the swivel is rotationally sleeved inside the annular chute, a plurality of communication holes are uniformly formed in the inner side wall of the annular chute, the inside of the communication holes are communicated with the inside of the two rollaway nest, and an oil filling hole is formed in the inner side wall of the swivel.

The method is further characterized in that: the sealing grooves are formed in the two opposite inner side walls of the annular sliding groove, sealing rings are fixedly connected to the two opposite sides of the rotating ring, and the two sealing rings are respectively and rotatably sleeved in the two sealing grooves.

The method is further characterized in that: the sides, facing away from each other, of the two sealing rings are arc-shaped surfaces.

The method is further characterized in that: the rolling mechanism comprises two ring bodies, wherein the two ring bodies are positioned between the two roller paths, a plurality of rotating shafts are arranged between the two ring bodies, the two ends of each rotating shaft are rotatably connected with rotating wheels, clamping rods are arranged on the two opposite sides of the outer side wall of each rotating shaft, the two clamping rods positioned on the two opposite sides of the outer side wall of each rotating shaft are fixedly connected between the two ring bodies, the two rolling mechanisms are vertically arranged, and a plurality of fixing rods are fixedly connected between the two rolling mechanisms and the two adjacent ring bodies.

The method is further characterized in that: the two clamping rods positioned on two opposite sides of the outer side wall of the same rotating shaft are positioned between the two adjacent limiting rings.

The method is further characterized in that: the inner side wall and the outer side wall of the two ring bodies are fixedly connected with a plurality of supporting rods, the plurality of supporting rods positioned on the inner side wall and the outer side wall of the same ring body are positioned between two adjacent rotating wheels, rollers are rotatably connected between one ends of the two parallel supporting rods positioned on the two ring bodies respectively, and the rollers are in contact with the inner side walls of the adjacent roller paths.

The method is further characterized in that: the sum of the thickness of the two supporting rods and the thickness of the roller is smaller than half of the thickness of the roller path.

The utility model has the beneficial effects that:

through rotating the swivel when filling lubricating oil to the slewing bearing, make fluid get into the raceway from a plurality of intercommunicating pore to it is more even to make oil spread in the raceway when filling lubricating oil, and make the user not need promote inner circle or outer lane to rotate when oiling, simultaneously, through utilizing runner and gyro wheel, make the raceway all by independent runner or gyro wheel support all around, make more steady smooth and easy when whole slewing bearing rotates.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the overall cross-sectional structure of the present utility model;

FIG. 3 is a schematic view of the outer race, inner race and swivel arrangement of the present utility model;

FIG. 4 is an enlarged view of a portion of the utility model at A;

fig. 5 is an exploded view of the structure of the rolling mechanism in the present utility model.

In the figure: 100. an outer ring; 101. a raceway; 200. an inner ring; 201. an annular chute; 202. a communication hole; 203. sealing grooves; 300. an oiling mechanism; 310. a swivel; 311. an oil filling hole; 320. a seal ring; 400. a rolling mechanism; 410. a ring body; 420. a rotating shaft; 421. a rotating wheel; 422. a limiting ring; 430. a clamping rod; 440. a support rod; 441. a roller; 450. and a fixing rod.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model discloses a slewing bearing base, which is shown in figures 1-5, and comprises an outer ring 100 and an inner ring 200, wherein the inner ring 200 is positioned in the outer ring 100, the inner side wall of the outer ring 100 and the outer side wall of the inner ring 200 are both provided with rollaway nest 101, two rolling mechanisms 400 are arranged between the two rollaway nest 101, and the inner side wall of the inner ring 200 is provided with an oiling mechanism 300;

the oiling mechanism 300 comprises a swivel 310, an annular chute 201 is arranged on the inner side wall of the inner ring 200, the swivel 310 is rotationally sleeved in the annular chute 201, a plurality of communication holes 202 are uniformly arranged on the inner side wall of the annular chute 201, the plurality of communication holes 202 are communicated with the interiors of the two raceways 101, an oil injection hole 311 is arranged on the inner side wall of the swivel 310, oiling can be carried out through the oil injection hole 311 when oiling and lubricating the slewing bearing, then the swivel 310 is rotated during oiling, the oil injection hole 311 rotates along with the swivel 310, oil enters the interiors of the two raceways 101 through the plurality of communication holes 202 when entering the annular chute 201 through the oil injection hole 311, sealing grooves 203 are respectively arranged on the two opposite inner side walls of the annular chute 201, and the two opposite sides of the swivel 310 are fixedly connected with the sealing rings 320, the two sealing rings 320 are respectively and rotatably sleeved in the two sealing grooves 203, a certain gap is reserved between the outer side wall of the swivel 310 and the inner side wall of the annular chute 201, so that the problem that oil is blocked by the inner side wall of the annular chute 201 and is difficult to inject is difficult to occur when lubricating oil is injected, the sealing performance of the annular chute 201 can be improved by the two sealing rings 320, grease seepage is avoided, the opposite sides of the two sealing rings 320 are arc-shaped surfaces, the contact surface between the sealing rings 320 and the sealing grooves 203 is reduced, the sealing rings are easier to rotate in the sealing rings, and therefore, when the slewing bearing is used for oiling and lubrication, the oil can more uniformly enter the raceway 101, and a user does not need to push the inner ring or the outer ring to rotate when oiling.

The rolling mechanism 400 comprises two ring bodies 410, the two ring bodies 410 are positioned between the two raceways 101, a plurality of rotating shafts 420 are arranged between the two ring bodies 410, two ends of the rotating shafts 420 are respectively connected with rotating wheels 421 in a rotating way, two clamping rods 430 are respectively arranged on two opposite sides of the outer side walls of the rotating shafts 420, two clamping rods 430 positioned on two opposite sides of the outer side walls of the same rotating shaft 420 are respectively fixedly connected between the two ring bodies 410, limiting rings 422 are respectively fixedly sleeved on the outer side walls of the rotating shafts 420, the two clamping rods 430 positioned on two opposite sides of the outer side walls of the same rotating shaft 420 are respectively positioned between the two adjacent limiting rings 422, the two clamping rods 430 can better fix the position of the rotating shaft 420, the rotating wheels 421 are not contacted with the two ring bodies 410, the two rolling mechanisms 400 are vertically arranged, a plurality of fixing rods 450 are respectively positioned between the two adjacent ring bodies 410, the runner 421 on the upper rolling mechanism 400 contacts with the top surfaces of the two raceways 101, the runner 421 on the lower rolling mechanism 400 contacts with the bottom surfaces of the two raceways 101, the inner ring 200 and the outer ring 100 can relatively rotate by rolling in the raceways 101 through the runner 421, and a gap is reserved between the two rolling mechanisms 400 through the fixing rod 450, so that the runner 421 on the two rolling mechanisms 400 is not easy to contact, the runner 421 can rotate more smoothly, the runner 421 can roll between the raceways 101, rolling bodies do not need to be carried out by balls with complex production and manufacturing processes when the slewing bearing is produced, and the top surfaces and the bottom surfaces of the raceways 101 are respectively supported by independent rolling bodies, so that the inner ring 200 and the outer ring 100 can rotate more smoothly.

The inner side wall and the outer side wall of the two ring bodies 410 are fixedly connected with a plurality of supporting rods 440, the supporting rods 440 positioned on the inner side wall and the outer side wall of the same ring body 410 are positioned between two adjacent rotating wheels 421, rollers 441 are rotatably connected between one ends of the two supporting rods 440 which are respectively positioned on the two ring bodies 410 and are parallel, the rollers 441 are contacted with the inner side walls of the adjacent rolling paths 101, the positions of the two ring bodies 410 are limited through the rollers 441, the ring bodies 410 are prevented from moving, meanwhile, when the two rolling paths 101 are communicated through the rollers 441, the two opposite side walls and the top surface and the bottom surface are supported by the rollers 441 or the rotating wheels 421 and roll on the rollers, the sum of the thickness of the two supporting rods 440 and the thickness of the rollers 441 is smaller than half of the thickness of the rolling paths 101, the supporting rods 440 are not contacted with the side walls of the rolling paths 101, the outer ring 100 and the inner ring 200 are prevented from rotating, and the side walls of the rolling paths 101 are respectively supported by independent rolling bodies, and the inner ring 200 and the outer ring 100 are smoother in rotation.

Working principle: when the slewing bearing is refueled, the swivel 310 is rotated, oil is filled from the oil filling hole 311, the oil enters a space between the swivel 310 and the inner side wall of the annular chute 201 and flows into the raceway 101 through the plurality of communication holes 202, so that the oil spreads more uniformly in the raceway 101 during filling, and then the outer ring 100 or the inner ring 200 of the slewing bearing is rotated so that the oil is adhered to and clamped by the inner roller 441 and the rotating wheel 421 and rotates along the raceway 101, so that the roller 441 and the rotating wheel 421 are fully lubricated by the oil;

when the slewing bearing rotates, the two communicated roller paths 101 are supported by the independent rollers 441 and the runner 421 and can rotate along the rollers, so that the slewing bearing rotates more smoothly and stably.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely illustrative and explanatory of the utility model, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the utility model or exceeding the scope of the utility model as defined in the claims.

Claims

1. The slewing bearing base comprises an outer ring (100) and an inner ring (200), wherein the inner ring (200) is positioned inside the outer ring (100), and the inner side wall of the outer ring (100) and the outer side wall of the inner ring (200) are both provided with rollaway nest (101), and the slewing bearing base is characterized in that two rolling mechanisms (400) are arranged between the two rollaway nest (101), and the inner side wall of the inner ring (200) is provided with an oiling mechanism (300);

the oiling mechanism (300) comprises a swivel (310), an annular chute (201) is formed in the inner side wall of the inner ring (200), the swivel (310) is rotationally sleeved inside the annular chute (201), a plurality of communication holes (202) are uniformly formed in the inner side wall of the annular chute (201), the inner side of the plurality of communication holes (202) are communicated with the inner parts of the two rollaway nest (101), and oil injection holes (311) are formed in the inner side wall of the swivel (310).

2. The slewing bearing base of claim 1, wherein sealing grooves (203) are formed in two opposite inner side walls of the annular sliding groove (201), sealing rings (320) are fixedly connected to two opposite sides of the rotating ring (310), and the two sealing rings (320) are respectively and rotatably sleeved in the two sealing grooves (203).

3. A slewing bearing base as claimed in claim 2, wherein the opposite sides of the sealing rings (320) are curved.

4. The slewing bearing base of claim 1, wherein the rolling mechanism (400) comprises two ring bodies (410), the two ring bodies (410) are located between the two raceways (101), a plurality of rotating shafts (420) are arranged between the two ring bodies (410), two ends of each rotating shaft (420) are rotatably connected with rotating wheels (421), clamping rods (430) are arranged on two opposite sides of the outer side wall of each rotating shaft (420), two clamping rods (430) located on two opposite sides of the outer side wall of the same rotating shaft (420) are fixedly connected between the two ring bodies (410), the two rolling mechanisms (400) are vertically arranged, and a plurality of fixing rods (450) are fixedly connected between the two adjacent ring bodies (410) of the two rolling mechanisms (400).

5. The slewing bearing base of claim 4, wherein the outer side walls of the plurality of rotating shafts (420) are fixedly sleeved with limiting rings (422), and two clamping rods (430) positioned on two opposite sides of the outer side wall of the same rotating shaft (420) are positioned between two adjacent limiting rings (422).

6. The slewing bearing base of claim 4, wherein the inner side wall and the outer side wall of the two ring bodies (410) are fixedly connected with a plurality of struts (440), the struts (440) positioned on the inner side wall and the outer side wall of the same ring body (410) are positioned between two adjacent rotating wheels (421), a roller (441) is rotatably connected between one ends of the two parallel struts (440) positioned on the two ring bodies (410), and the roller (441) is in contact with the inner side wall of the adjacent rollaway nest (101).

7. A slewing bearing base as claimed in claim 6, wherein the sum of the thickness of the two struts (440) and the thickness of the roller (441) is less than half the thickness of the raceway (101).