Calculation method for static load bearing curve of double-row different-diameter ball slewing bearing

A technology of slewing bearing and calculation method, which is applied in geometric CAD, special data processing applications, etc., to achieve the effect of facilitating mathematical realization

Inactive Publication Date: 2022-05-13
HENAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are no relevant reports at home and abroad on the calculation method of the load curve of double-row different-diameter ball slewing bearings.

Method used

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  • Calculation method for static load bearing curve of double-row different-diameter ball slewing bearing
  • Calculation method for static load bearing curve of double-row different-diameter ball slewing bearing
  • Calculation method for static load bearing curve of double-row different-diameter ball slewing bearing

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Embodiment 1

[0058] Double-row different-diameter ball slewing bearings for cranes, as attached figure 1 As shown, the main structural parameters of the slewing bearing are as follows:

[0059] ①Main raceway

[0060] Pitch circle diameter d m1 =2990mm, rolling element diameter D w1 =45mm, the number of rolling elements Z 1 = 174 pieces, contact angle α 1 = 60°;

[0061] ②Auxiliary raceway

[0062] Pitch circle diameter d m2 =2670mm, rolling body diameter D w2 =39(mm), the number of rolling elements Z 2 =196 pieces, contact angle α 1 = 60°;

[0063] The slewing bearing bears the following loads during work: Axial load F as =2180kN, overturning moment load M s =6700kNm; the main engine requires the safety factor of the slewing bearing to be 1.25, and it is required to calculate whether the safety factor of the slewing bearing can meet the requirements.

[0064] The calculation method of the static load bearing curve of the double-row different-diameter ball slewing bearing inclu...

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Abstract

The invention discloses a method for calculating a static load bearing curve of a double-row different-diameter ball turntable bearing, which specifically comprises the following steps of: if the maximum rolling body load value of a main raceway and the maximum rolling body load value of an auxiliary raceway are limited to be allowable rolling body load corresponding to rated static load of the bearing, calculating the maximum rolling body load value of the main raceway and the maximum rolling body load value of the auxiliary raceway in a balance equation; when the load distribution range coefficients of the parameters of the main raceway and the auxiliary raceway are continuously valued in the range of 0-1, respectively obtaining a static load bearing curve of the main raceway and a static load bearing curve of the auxiliary raceway; a static load bearing curve of the double-row different-diameter ball turntable bearing is composed of an AB section of an auxiliary raceway static load bearing curve and a BC section of a main raceway static load bearing curve. According to the calculation method for the static load bearing curve of the double-row different-diameter ball turntable bearing, complex mathematical modeling and numerical solution are not needed, and mathematical implementation of the static load bearing curve is facilitated.

Description

technical field [0001] The invention belongs to the field of type selection calculation for slewing bearings, and in particular relates to a calculation method for static load bearing curves of double-row different-diameter ball slewing bearings. Background technique [0002] The slewing bearing is a key component of the slewing mechanism of many mechanical systems. It is widely used in heavy machinery equipment such as cranes, excavators, and stockers. The correct selection is the prerequisite for ensuring the safe and reliable application of this type of bearing. The bearing capacity is the key to its selection. an important indicator of . [0003] The slewing bearing bears the combined effect of axial load and overturning moment load during work. Therefore, the bearing capacity index of the slewing bearing should be able to express the ability to simultaneously bear the combined action of axial load and overturning moment load; one in two-dimensional coordinate space The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17
CPCG06F30/17
Inventor 李云峰高广荣李金成
Owner HENAN UNIV OF SCI & TECH
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