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Non-soft-belt large-taper-angle double-row tapered roller slewing bearing

A technology of slewing bearing and tapered roller, applied in the direction of roller bearing, rolling contact bearing, bearing of rotary motion, etc., to achieve the effect of simple operation process, improve work efficiency, and simplify the steps of heat treatment

Pending Publication Date: 2018-06-29
洛阳新强联回转支承股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the present invention provides a three-row cylindrical roller slewing bearing without a soft belt. The working surface of the inner and outer rings of the double-row tapered roller bearing with a large taper angle is quenched by using the present invention, which solves the problem of the traditional large-diameter There is a soft belt problem in the slewing bearing, improving the efficiency and quality of the heat treatment of the slewing bearing is beneficial to prolonging the service life of the slewing bearing

Method used

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  • Non-soft-belt large-taper-angle double-row tapered roller slewing bearing
  • Non-soft-belt large-taper-angle double-row tapered roller slewing bearing

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Effect test

Embodiment 1

[0037] Such as Figure 1-3 As shown, a double-row tapered roller slewing bearing with no soft belt and large cone angle includes a soft belt outer ring 1, a soft belt first inner ring 2 and a soft belt second inner ring 3 of equal size. The outer ring 1 without soft belt, the first inner ring 2 without soft belt and the second inner ring 3 without soft belt are all made of 42GrMo, the first inner ring 2 without soft belt and the second inner ring 3 without soft belt are symmetrically arranged and passed through bolts Connecting, the first inner ring 2 without soft belt and the second inner ring 3 without soft belt are combined to form an inner ring structure, the thickness of the inner ring structure is greater than the thickness of the outer ring 1 without soft belt, and the circumferential direction of the outer ring 1 without soft belt There are two symmetrical and inclined first rolling working surfaces 9 without soft belts on the inner side, and a second rolling working s...

Embodiment 2

[0044] Such as Figure 1-3 As shown, a double-row tapered roller slewing bearing with no soft belt and large cone angle includes a soft belt outer ring 1, a soft belt first inner ring 2 and a soft belt second inner ring 3 of equal size. The outer ring 1 without soft belt, the first inner ring 2 without soft belt and the second inner ring 3 without soft belt are all made of 42GrMo, the first inner ring 2 without soft belt and the second inner ring 3 without soft belt are symmetrically arranged and passed through bolts Connecting, the first inner ring 2 without soft belt and the second inner ring 3 without soft belt are combined to form an inner ring structure, the thickness of the inner ring structure is greater than the thickness of the outer ring 1 without soft belt, and the circumferential direction of the outer ring 1 without soft belt There are two symmetrical and inclined first rolling working surfaces 9 without soft belts on the inner side, and a second rolling working s...

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Abstract

The invention discloses a non-soft-belt large-taper-angle double-row tapered roller slewing bearing. The non-soft-belt large-taper-angle double-row tapered roller slewing bearing comprises a non-soft-belt outer ring, a non-soft-belt first inner ring and a non-soft-belt second inner ring, wherein the sizes of the non-soft-belt first inner ring and the non-soft-belt second inner ring are equal. Thenon-soft-belt first inner ring and the non-soft-belt second inner ring are arranged symmetrically and connected through a bolt, and combined to form an inner ring structure. The circumferential innerside of the non-soft-belt outer ring is provided with two symmetrical and obliquely-arranged non-soft-belt first rolling working surfaces. The circumferential outer side of the inner ring structure isprovided with non-soft-belt second rolling working surfaces corresponding to the rolling working surfaces of the non-soft-belt outer ring. According to the non-soft-belt large-taper-angle double-rowtapered roller slewing bearing, heating and cooling of the surface of a rolling way are conducted simultaneously, and a non-soft-belt area cannot be produced, therefore, cracks due to secondary heating cannot be produced on the surface of the rolling way, a low-hardness area formed through quenching also does not exist, meanwhile, the steps of heat treatment of the slewing bearing is further simplified, the working efficiency is improved, and the service life of the slewing bearing is prolonged advantageously.

Description

technical field [0001] The invention belongs to the technical field of slewing bearings, in particular to a double-row tapered roller slewing bearing with no soft belt and large cone angle. Background technique [0002] Large cone angle double row tapered roller slewing ring bearings are large bearings composed of inner and outer rings and rolling elements that can bear comprehensive loads, and can simultaneously bear large axial and radial loads and overturning moments. Slewing bearings are used in various construction machinery and rotary worktables. They are an important part of the slewing mechanism of construction machinery. They have high requirements for the quenching quality of their raceways. Generally, their surfaces are required to have high hardness and wear resistance. The material inside the raceway still maintains its original ductile structure. For large-diameter slewing bearings, medium-frequency induction hardening is usually used. Because medium-frequency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C19/38F16C33/62F16C33/64C21D1/10C21D9/40
CPCF16C19/385F16C33/62F16C33/64C21D1/10C21D9/40F16C2223/18Y02P10/25
Inventor 郝文路胡占圈
Owner 洛阳新强联回转支承股份有限公司
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