Working principle of the central swivel joint of an excavator
申佳液压
Release time：
2023-05-08
The central swivel joint of excavators is mainly used in the entire hydraulic system of large-tonnage tower cranes and other machinery. Including a rotating body and a rotating shaft, the small end of the rotating shaft is self rotating, the rear end is axially inserted into the rotating body, and the small end of the rotating shaft is equipped with a baffle. Fixed, rotating body, fixed with end cover at the rear end, the rotating shaft, with the large end extending out of the rotating body, the rear end outward, and the rotating shaft.
The central swivel joint of excavators is mainly used in the entire hydraulic system of large-tonnage tower cranes and other machinery. Including a rotating body and a rotating shaft, the small end of the rotating shaft is self rotating, the rear end is axially inserted into the rotating body, and the small end of the rotating shaft is equipped with a baffle. Fixed, rotating body, fixed with end cover at the rear end, the rotating shaft, with the large end extending out of the rotating body, the rear end outward, and the rotating shaft. The outer edge of the large end near the rear end of the rotating body is fixedly connected with a positioning plate; The inner axis of the rotating shaft is equipped with eight main oil passage holes, and the oil inlet ports of the eight main oil passage holes are all set at the outer edge of the large end of the rotating shaft, corresponding to the rotating shaft The eight main oil passage holes on the rotating body correspond to the eight main oil passage holes on the rotating shaft. The present invention enables the rotating part and the fixed part to rotate 360 ° relative to each other in a pipeline without interference, with unobstructed upper and lower oil circuits, and each oil circuit action not connected in series.
In general, the central swivel joint of excavators is used in hydraulic excavators, cranes, 360 rotary drilling rigs, etc. The upper and lower parts need to be rotated, which leads to the problem of oil circuit connection between the rotating part and the fixed part. The central swivel joint of an excavator is a hydraulic pipeline used to connect the fixed and rotating parts of the entire hydraulic system. It consists of a rotating body, a rotating shaft, and a cover. When in use, the rotary body is fixed to the lower platform of the hydraulic excavator and crane machinery, and the installation plate on the rotary shaft is connected to the rotary support on the upper platform. Hydraulic hoses and wires are installed on each oil port and circuit of the rotating body and shaft respectively. The upper platform of hydraulic machinery drives the rotation axis to rotate.
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