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Calibration method for six-row roller slewing bearings used in thousand-ton all-terrain cranes

A technology of slewing bearings and six rows of rollers, applied in roller bearings, special data processing applications, instruments, etc.

Active Publication Date: 2018-02-02
HENAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a calibration method for six-row roller slewing bearings used in thousand-ton all-terrain cranes, so as to solve the problems of reasonable parameter design and correct selection and application of such slewing bearings

Method used

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  • Calibration method for six-row roller slewing bearings used in thousand-ton all-terrain cranes
  • Calibration method for six-row roller slewing bearings used in thousand-ton all-terrain cranes
  • Calibration method for six-row roller slewing bearings used in thousand-ton all-terrain cranes

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Embodiment 1

[0038] A six-row roller slewing bearing for a 1200-ton all-terrain crane, such as figure 1 As shown, it mainly consists of inner ring 1, upper row of inner ring rollers 2, radial inner ring rollers 3, radial outer ring rollers 4, upper row of outer ring rollers 5, outer ring 6, lower row of outer ring rollers Sub 7, middle ring 8, lower row inner ring roller 9 constitute.

[0039] The main structural parameters of the slewing bearing are as follows:

[0040] ① Upper row of inner ring rollers

[0041] pitch circle diameter (mm), roller diameter (mm), roller length (mm), the number of rollers (indivual)

[0042] ② Upper row of outer ring rollers

[0043] pitch circle diameter (mm), roller diameter (mm), roller length (mm), the number of rollers (indivual)

[0044] ③ Lower row of inner ring rollers

[0045] pitch circle diameter (mm), roller diameter (mm), roller length (mm), the number of rollers (indivual)

[0046] ④ Lower row of outer ring roller...

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Abstract

The invention relates to a calibration method of a six-row roller slewing bearing used in a thousand-ton all-terrain crane. The invention first establishes a polar coordinate system based on the parameters of the six-row roller slewing bearing, and calculates at the polar angle in sequence by using a formula The axial displacement and inclination angle displacement of the middle ring of the six-row cylindrical roller slewing bearing, and use the axial displacement and inclination angle displacement to calculate the load on the upper row of inner ring rollers and the load on the upper row of outer ring rollers , the load borne by the lower row of inner ring rollers and the load borne by the lower row of outer ring rollers, and finally use the formula to calculate the maximum contact stress between the rollers and each row of raceways, and use the formula to calculate six The load-carrying capacity safety factor of each row of raceways in the row roller slewing bearing is used to determine whether the six-row roller slewing bearing meets the use requirements and complete the checking process; the invention effectively solves the problem of reasonable parameter design and correct selection of this type of slewing bearing. type application problems.

Description

technical field [0001] The invention relates to the analysis field of crane slewing bearings, in particular to a checking method for six-row roller slewing bearings used in thousand-ton all-terrain cranes. Background technique [0002] With the acceleration of wind power, petrochemical, nuclear power engineering, shipbuilding, mining, metallurgy, and transportation facilities, the domestic demand for kiloton cranes is becoming more and more urgent. In recent years, relevant domestic enterprises have begun to develop localized research and development of thousand-ton all-terrain cranes. The slewing bearing is the key component of the slewing mechanism of the all-terrain crane. Its structure is relatively special, and its stress situation is very complicated. Due to the limitation of radial space, the slewing bearing adopts the structural form of six rows of cylindrical rollers, in order to ensure the required carrying capacity by increasing the number of rows of rollers with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50F16C19/38
Inventor 李云峰姜迪李晟阳段檀烁韩茜茜
Owner HENAN UNIV OF SCI & TECH
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