Turnaround device

Abstract

The embodiment of the present application discloses a rotary channel device, which includes at least two oil supply mechanisms arranged along the circumferential direction. The oil supply mechanisms include a fixed outer ring and a rotary inner ring. Two adjacent oil supply mechanisms can be engaged. When the mechanism is engaged, the rotary inner ring can rotate around the center of the oil supply mechanism; the oil supply mechanism also includes at least one moving ring, a fixed end oil port arranged on the moving ring and pierced on one of the fixed outer rings, and a clamping hydraulic cylinder 1. The oil port at the rotary end is set on one of the rotary inner rings. The movable ring can move radially along the oil supply mechanism relative to the fixed outer ring and the rotary inner ring. The clamping hydraulic cylinders are respectively connected with the fixed outer ring and the movable ring. Driven by the tight cylinder, the moving ring is joined or separated from the rotary inner ring, so that the oil port at the fixed end communicates with the oil port at the rotary end. The rotary inner ring and the fixed outer ring of the rotary channel device in the embodiment of the present application can be combined in two or multiple combinations to realize the function of transmitting hydraulic power.

Description

technical field [0001] The invention relates to fluid transmission and control of engineering machinery, in particular to a rotary channel device. Background technique [0002] In some engineering devices, it is necessary to transmit fluid power between the fixed part and the rotating part, and the rotary joint is usually used to realize this fluid power transmission. Existing rotary joints have oil ports at the fixed end and oil ports at the rotary end, and usually at least one oil port is located at the very center of the rotary part, and its outer diameter is relatively small. This conventional swivel joint is limited in three situations: [0003] One case is that the turning radius of the turning part is relatively large (greater than 1 meter), and the space of the turning center of the turning part is occupied by other mechanisms, at this time, the conventional turning joint cannot be used. [0004] Another situation is that the radius of gyration of the rotatable par...

AI Technical Summary

Problems solved by technology

This conventional swivel joint is limited in three situations:

[0003] One case is that the turning radius of the turning part is large (greater than 1 meter), and the turning center space of the turning part is occupied by other mechanisms, at this time, the conventional turning joint cannot be used

[0004] Another situation is that the radius of gyration of the rotatable parts is relatively large, and the slewing speed of the rotatable parts is relatively high (for example, more than 50 revolutions per minute). If the maximum line speed allowed by the sealing material is exceeded, the seal will be easily damaged and the service life will be greatly reduced

[0005] The third situation is that in some cases, the rotary parts need to be completely separated during use and divided into two or more parts, the existing rotary joints cannot be used, and the sealing and dustproof are difficult to achieve

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