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Title:
SLEWING BEARING STRUCTURE, TURNTABLE AND OPERATION MACHINE
Document Type and Number:
WIPO Patent Application WO/2022/268169
Kind Code:
A1
Abstract:
A slewing bearing structure, comprising a shell (1), a rotary shaft assembly (2), radial bearings (3) and axial bearings (4), wherein the rotary shaft assembly (2) is arranged in the shell (1) in the vertical direction of the shell (1); the radial bearings (3) are arranged in the shell (1), and the radial bearings (3) are coaxially sleeved outside a spindle (21) of the rotary shaft assembly (2), and apply a radial first acting force to the spindle (21), such that the rotary shaft assembly (2) and the radial bearing (3) have the same axis; the axial bearings (4) are arranged in the shell (1), and the axial bearings (4) are coaxially sleeved outside the spindle (21) and are axially arranged opposite a thrust disc (22) of the rotary shaft assembly (2); and the axial bearings (4) apply an axial and upward second acting force to the thrust disc (22), such that the rotary shaft assembly (2) is kept in a suspended state in the axial direction. Also disclosed are a turntable and an operation machine. Contact friction between movable and static components of the slewing bearing structure is avoided, and the frictional resistance torque is reduced, such that the power consumption and slewing noise of the slewing bearing structure are reduced, the service life of the slewing bearing structure is prolonged, and the maintenance-free performance of the slewing bearing structure is improved.

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Inventors:
SU ZHENG (CN)
LV HONGSONG (CN)
Application Number:
PCT/CN2022/100818
Publication Date:
December 29, 2022
Filing Date:
June 23, 2022
Export Citation:
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Assignee:
SANY MOBILE CRANES CO LTD (CN)
International Classes:
F16C32/04; B66C23/84; E02F9/12; F16C32/06
Domestic Patent References:
WO2019137022A12019-07-18
Foreign References:
CN113323964A2021-08-31
US6121704A2000-09-19
JP2010159842A2010-07-22
JP2004150489A2004-05-27
CN106895857A2017-06-27
CN106907393A2017-06-30
JP2007061960A2007-03-15
JP2000343379A2000-12-12
EP2006558A22008-12-24
US20080233851A12008-09-25
US11005336B12021-05-11
JP2019104066A2019-06-27
Attorney, Agent or Firm:
TALENT PATENT&TRADEMARK FIRM (CN)
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