Hydraulic swivel connector with electric brush

Abstract

The invention relates to a hydraulic swivel connector with an electric brush. The hydraulic swivel connector is mainly applied to a 900T full-hydraulic crane and is characterized by comprising a swivel body (1) and a rotating shaft (2). The rotating shaft (2) is axially inserted into the swivel body (1), a blocking plate (3) is arranged at the lower end of the rotating shaft (2), the electric brush (6) is positioned under the block plate (3), the electric brush (6) is connected with the lower end of the rotating shaft (2) through an electric brush location pin (5), a dustproof ring (10) is arranged in an annular groove between the swivel body (1) and the rotating shaft (2), and two lips (10.1) are formed on one side, in contact with the rotating shaft (2), of the dustproof ring (10). The swivel connector with the electric brush can prevent dust from being prone to enter and oil from being prone to leak, a fixed portion and a rotation portion in a hydraulic system and a circuit are relatively rotate 360 degrees, all oil channels and the circuit are not in serial connection, and applicability of the hydraulic crane is improved.

Description

Technical field [0001] The invention relates to a hydraulic rotary joint with an electric brush, which is mainly used in a 900T full hydraulic crane and belongs to the technical field of engineering machinery. Background technique [0002] The upper and lower parts of the hydraulic crane need to be rotated, so there is a connection problem between the oil circuit and the circuit of the rotary part and the fixed part. The hydraulic rotary joint is composed of a rotary body, a rotary shaft and a cover. When in use, the rotary body is fixed to the lower rotary platform of the hydraulic crane, and the mounting plate on the rotary shaft is connected with the rotary support on the upper rotary platform. Hydraulic hoses and wires are respectively installed on the oil ports and lines of the rotating body and the rotating shaft, and the upper platform of the hydraulic machinery drives the rotating shaft to rotate. [0003] However, the previous rotary joints have poor sealing performance w...

AI Technical Summary

Problems solved by technology

[0003] However, the sealing performance between the rotary joint and the outside world in the past is poor, and the dust from the outside is easy to get into the rotary joint, which affects the performance of the rotary joint, and the oil in the rotary joint is also easy to leak out. The rotation also has an impact, requiring frequent oiling, which increases the labor intensity of the workers

[0004] In addition, in the past, after the hydraulic rotary joint with electric brush was connected to the hydraulic pipeline and circuit of the fixed part and the rotating part in the hydraulic system and the circuit, the fixed part and the rotating part could not be rotated 360° relative to each other, resulting in the blockage of the oil on and off, and the oil circuit In series with the circuit action, the hydraulic crane cannot perform more complex actions, which limits its applicability

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