Study And Develop On The High-speed Multi-channels Rotary Joint

Rotary Joint is the key part on machinery such as the decoiler, the machine tool and the mechanical equipments;. Its function is to connect the pipeline which send fluid medium on rotating, reciprocating motion or the equipment which moves(rotate) an angle. At the same time, It can guarantee to transmit fluids successively to equipment, pipeline operating, and also prevent the fluid medium from ganging up each other, revealing and entering job medium with the external. In different application occasions, there can be different structure to Rotary Joint, no matter how changes of the structure. It include rotatory part, sealed part and static part. The rotate part is connect to the rotatory organization of machinery connect, the static part link with medium source and the sealed part prevents the fluid from revealing and mixing each other. So the aim of designing is a requirement connected to rotate should be safe and suitable for high speed, working stating, long-lived processing convenient with high pressure and it's size should be small and light.Based on a lot of relevant materials both at home and abroad, this paper analyzes the rotational speed low and short-lived reason to the rotate in our country. This design adopts three oil cavity bear as support, and adopt dark ditch ball bearing as the joining part, adopting the no contacting sealed mechanism as the static part and the rotating. Meanwhile, adopted the finite element method, I analyzed the hydrostatic bearing with the aid of the commercial finite element software Marc/Mentat. Adopt large-scale software-Ansys which is a finite element in common, use to make a modal analysis and respond analyzing to the core axle harmoniously. Design and optimize to the rotating structure through analyzing.Based on Reynold equation and finite element method I have carried onmathematic modeling to the t oil film of the hydrostatic bearing and set up finite element models, through calculating out the pressure of the oil film with the aid of Marc/Mentat, calculate rigidity of the oil film and bearing capacity. Analysis natural frequency and the shaking type of the axle as well as the axle-bearing natural frequency and shaking type, through the modal analysis with the aid of ANSYS. analyze core to be axle partial to rotate state, through is it draw core axle response producing of the lasting cycle load to analyze to in harmony response, core of axle.In this paper, the solving logic and solving process of the finite element method was introduced, from which Reynold equation was achieved in the form of the finite element model. Through simulation test on computer via ANSYS and MARC, performance parameters of the Multi-channels Rotary Joint were attained, which were compared with those gotten form theoretical analysis and structures and parameters of the Multi-channels Rotary Join were optimized.