Method for removing a bearing assembly of a pedestal crane and a removable bearing assembly for a pedestal crane
OwnerJohn B. Goss, William D. Morrowinventors
Life of this patent
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Abstract
The method for removing a bearing assembly disposed between a revolving turntable of a pedestal crane assembly and the pedestal and a removable bearing assembly for a pedestal crane, wherein the method includes activating a support member coacting between the revolving turntable and the upper end of the pedestal for raising and supporting the pedestal crane assembly from the support column of the pedestal, centering the revolving turntable about the support column of the pedestal with alignment structure, removing a retainer plate that secures thrust and radial bearings in position with respect to the revolving turntable and the upper end of the pedestal to permit access and removal of the bearings.
Claims13
For a pedestal crane assembly having a revolving turntable and a boom, the revolving turntable adapted to be movably disposed on a support column of a pedestal, a method for removing a thrust bearing assembly disposed between the revolving turntable and the pedestal, comprising the steps of:
- centering the revolving turntable about the support column of the pedestal with alignment means mounted with the pedestal crane assembly, the alignment means being capable of radially engaging the pedestal for said centering;
- activating a support means coacting with and between the revolving turntable and the upper end of the pedestal for raising and supporting the weight of the pedestal crane assembly from the support column of the pedestal;
- removing a retainer plate that secures the thrust bearing assembly in position with respect to the revolving turntable and the upper end of the pedestal to permit removal and access to the thrust bearing assembly;
- and,
- withdrawing the thrust bearing assembly from the pedestal to permit inspection thereof.
In a pedestal crane assembly having a revolving turntable and a boom, the revolving turntable adapted to be disposed on a support column of a pedestal, a bearing assembly adapted to be disposed between the revolving turntable and the support column, comprising:
- support means coacting with and between the revolving turntable and the upper end of the pedestal for raising and supporting the weight of the pedestal crane assembly from the support column of the pedestal;
- alignment means mounted with the pedestal crane assembly for centering the revolving turntable about the support column of the pedestal, said alignment means radially engaging the pedestal for centering the pedestal crane assembly about the pedestal;
- thrust bearing means adapted to be disposed about the support column of the pedestal;
- and,
- retaining means removably mounted with the revolving turntable for securing the thrust bearing means in position with respect to the revolving turntable and the upper end of the pedestal to permit removal and accesss to said thrust bearing means.
Dependencies are inferred from the claim text.