Papers by Keyword: Metamorphic Mechanisms

Abstract: Sugarcane loader is a kind of agricultural machinery for sugarcane transport. Traditional sugarcane loaders are mostly hydraulic type powered by diesel engine, which is difficult to promote in small producing unit, because of its big size and high maintenance costs. A manual operation sugarcane loader with metamorphic function invented by the research of metamorphic mechanism applied to sugarcane loaders can change its topological structures according to different needs of work tasks. The grabbing and raising task of sugarcane can be done by a single operator action. This paper introduces the source-metamorphic mechanism of the sugarcane loader, as well as the metamorphic ways. Use the adjacency matrix to describe the topology changes of different work tasks and to analysis the principles and characteristics of configuration.

Abstract: Sugarcane loader is a kind of agricultural machinery for sugarcane transport. Traditional sugarcane loaders are mostly hydraulic type powered by diesel engine, which is difficult to promote in small producing unit, because of its big size and high maintenance costs. A manual operation sugarcane loader with metamorphic function invented by the research of metamorphic mechanism applied to sugarcane loaders can change its topological structures according to different needs of work tasks. The grabbing and raising task of sugarcane can be done by a single operator action. This paper introduces the source-metamorphic mechanism of the sugarcane loader, as well as the metamorphic ways. Use the topological graphs to describe the topology changes of different work tasks and to analysis the principles and characteristics of configuration.

Abstract: Because of special structure and dynamic behavior, the dynamic equations of metamorphic mechanism are variable during the process of configuration change. In order to combine dynamics analysis and structure design of metamorphic mechanisms intimately, a new method of forming dynamic model of metamorphic mechanisms is proposed based on fully Cartesian coordinate’s method and the relation between origin mechanism and sub-configuration. A new concept named origin constraint equation is introduced which can be converted into constraint equations of each sub-configuration easily by adding corresponding constraint equations of configuration change. Constraint equations commonly used in configuration change and dynamic equations of each configuration are given in the form of natural coordinates. Finally, a four-bar spherical metamorphic mechanism is used as an example to validate this dynamic modeling method.