A crane-manipulator transfer position impact on a chassis loadings of a base vehicle

Abstract

In the article it was analyzed the influence of the configuration of the crane in transport mode on the loading of the suspension base chassis (truck). To do this a mathematical model was developed to represent motion equations of the system of lumped masses connected by elastic-dissipative ties. Integration of the motion equations takes into account the influence of the surface roughness of the support base and the load moment of the crane-manipulator. Deformation and efforts in the suspension are evaluated based on the static and dynamic components, calculated using the developed model. Calculations are made for a three-axle truck KAMAZ 53215, equipped with a Kanglim KS3105 crane. The results of computer simulation using mathematical models have shown that the location of the crane boom forward leads to a significant overload of the front suspension of the base chassis. The location of the crane boom backwards leads to unloading the front suspension of the base chassis. However, overloading of the rear suspension is much lower, as the rear suspension of the vehicle are mostly oriented on the perception of the weight of the payload. When moving the base truck with the transport position of the crane boom forward dynamic component of the load on the front suspension is higher by 10...15% higher than in the transport position of the crane boom backwards, and the load on the rear base of the chassis is lower by 8...9 %. The developed mathematical model and calculation methodology should be used for the rational choice of the transport configuration of the crane with specific given characteristics of the basic truck and cargo load.