CN211874953U

CN211874953U - Double-row roller type slewing bearing

Info

Publication number: CN211874953U
Application number: CN201920969805.5U
Authority: CN
Inventors: 刘步中; 徐耀; 孙云龙; 陈亮
Original assignee: Huaian Vocational College of Information Technology
Current assignee: Huaian Vocational College of Information Technology
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-11-06
Anticipated expiration: 2029-06-26

Abstract

The utility model discloses a double-row roller type slewing bearing, which comprises an outer ring, an inner ring and a rolling body positioned between the outer ring and the inner ring; an upper and a lower rows of raceways are arranged between the outer ring and the inner ring, cylindrical rolling elements are arranged in the upper raceways in a crossed manner, and horizontal cylindrical rolling elements are arranged in the lower raceways. The utility model discloses combine together cross roller and horizontal roller, can not only bear great load, can also improve the gyration precision, satisfy steady operation, requirement that the accuracy is high.

Description

Double-row roller type slewing bearing

Technical Field

The utility model relates to a slewing bearing technical field, concretely relates to two raceway slewing bearing of cross roller and horizontal roller combination.

Background

The slewing bearing is generally composed of a worm, a slewing bearing, a housing, a motor, and the like. Because the core component adopts the slewing bearing, the core component can simultaneously bear axial force, radial force and tilting moment.

At present, most slewing bearings used in the engineering field of tower cranes and the like are single-row four-point contact ball type slewing bearings which are composed of two seat rings, and internal steel balls are in four-point contact with arc raceways and can bear axial force, radial force and tilting moment simultaneously. However, during operation, the operation accuracy thereof is reduced as the load is increased. The single-row crossed roller type slewing bearing has high accuracy, but has compact structure, light weight and small assembly clearance; resulting in a smaller load bearing capacity.

Disclosure of Invention

The utility model provides a double roller slewing bearing combines together alternately roller and horizontal roller, can not only bear great load, can also improve the gyration precision, satisfies steady operation, requirement that the accuracy is high.

The utility model discloses a following technical scheme realizes:

a double-row roller type slewing bearing comprises an outer ring, an inner ring and a rolling body positioned between the outer ring and the inner ring; an upper and a lower rows of raceways are arranged between the outer ring and the inner ring, cylindrical rolling bodies are arranged in the upper raceways in a crossed manner, and horizontal cylindrical rolling bodies are arranged in the lower raceways; the axis m of the horizontal cylindrical rolling body is consistent with the axis h of the slewing bearing in direction; and the rolling axis m of the horizontal cylindrical rolling body is parallel to the axis h of the slewing bearing.

Further, the upper and lower raceways are separated from each other.

Furthermore, crossed roller isolation blocks are arranged between the cylindrical rolling bodies which are arranged in a crossed mode.

Furthermore, a horizontal roller isolation block is arranged between the horizontal cylindrical rolling bodies.

Furthermore, sealing strips are arranged at the top of the upper raceway and the bottom of the lower raceway.

Furthermore, the outer ring and the inner ring are provided with mounting holes.

Furthermore, a gear is arranged on the inner side surface of the inner ring.

(III) advantageous effects

The utility model provides a double roller slewing bearing compares with prior art, and it has following beneficial effect:

(1) the combination of the cross roller and the horizontal roller can bear larger load, improve the rotation precision and meet the requirements of stable operation and high precision.

(2) The upper and lower raceways are separated from each other so that the load of each row of rollers can be determined exactly and can bear various loads at the same time.

Drawings

Fig. 1 is a schematic cross-sectional view of the present invention.

Reference numerals and part references in the drawings: 1-outer ring, 2-sealing strip, 3-crossed cylindrical rolling body, 4-horizontal cylindrical rolling body, 5-inner ring, 6-sealing strip, 7-horizontal roller isolation block and 8-crossed roller isolation block.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are only some, but not all embodiments of the invention. Under the prerequisite that does not deviate from the design concept of the utility model, the ordinary person in the art should fall into the protection scope of the utility model to the various changes and improvements that the technical scheme of the utility model made.

Example (b):

a double-row roller type slewing bearing comprises an outer ring 1, a sealing strip 2, a sealing strip 6, cylindrical rolling bodies 3 arranged in a crossed mode, horizontal cylindrical rolling bodies 4, an inner ring 5, horizontal roller isolation blocks 7 and crossed roller isolation blocks 8. An upper and a lower double-row roller paths are arranged between the outer ring 1 and the inner ring 5, and the upper and the lower roller paths are respectively separated. Cylindrical rolling bodies 3 are arranged in the upper roller path in a crossed mode, and sealing strips 2 are arranged on the top of the upper roller path on the outer sides of the crossed cylindrical rolling bodies 3; the horizontal cylindrical rolling element 4 is arranged in the lower raceway, and a sealing strip 6 is arranged at the bottom of the lower raceway and outside the horizontal cylindrical rolling element 4.

The crossed cylindrical rolling bodies 3 are positioned in the upper raceways of the outer ring 1 and the inner ring 5, and the crossed cylindrical rolling bodies 3 in the raceways are crossed and separated by a crossed roller spacer 8, and the crossed cylindrical rolling bodies 3 roll in the upper raceways of the outer ring 1 and the inner ring 5.

The horizontal cylindrical rolling body 4 is positioned in the lower raceways of the outer ring 1 and the inner ring 5, and the axis m of the horizontal cylindrical rolling body 4 is consistent with the axis h of the slewing bearing; the rolling axis m of the horizontal cylindrical rolling body 4 is parallel to the axis h of the slewing bearing; and the horizontal cylindrical rolling bodies 4 in the raceways are separated by horizontal roller isolation blocks 7, and the horizontal cylindrical rolling bodies 4 roll in the lower raceways of the outer ring 1 and the inner ring 5.

The outer ring 1 and the inner ring 5 can be provided with relevant mounting holes according to the use requirement or other specific requirements such as transmission ratio and the like.

The inner ring 5 can set gear tooth parameters according to use requirements or other specific requirements such as transmission ratio and the like.

Claims

1. A double-row roller type slewing bearing comprises an outer ring (1), an inner ring (5) and a rolling body positioned between the outer ring (1) and the inner ring (5); the method is characterized in that: an upper row of raceway and a lower row of raceway are arranged between the outer ring (1) and the inner ring (5), cylindrical rolling bodies (3) are arranged in the upper raceway in a crossed manner, and horizontal cylindrical rolling bodies (4) are arranged in the lower raceway; the axis m of the horizontal cylindrical rolling body (4) is consistent with the axis h of the slewing bearing in direction; the rolling axis m of the horizontal cylindrical rolling body (4) is parallel to the axis h of the slewing bearing.

2. The double row roller slewing bearing of claim 1, wherein: the upper and lower raceways are separate from each other.

3. The double row roller slewing bearing of claim 1, wherein: and crossed roller isolation blocks (8) are arranged between the crossed cylindrical rolling bodies (3).

4. The double row roller slewing bearing of claim 1, wherein: and a horizontal roller isolation block (7) is arranged between the horizontal cylindrical rolling bodies (4).

5. The double row roller slewing bearing of claim 1, wherein: the top of the upper raceway is provided with a sealing strip (2), and the bottom of the lower raceway is provided with a sealing strip (6).

6. The double row roller slewing bearing of claim 1, wherein: and the outer ring (1) and the inner ring (5) are provided with mounting holes.

7. The double row roller slewing bearing of claim 1, wherein: and a gear is arranged on the inner side surface of the inner ring (5).