Modeling and Analysis of Truck Mounted Concrete Pump Boom by Virtual Prototyping

Abstract

By far there is lack of research on different working conditions between rigid and flexible dynamics of truck mounted concrete pump booms. First a 3D model has been established by using virtual prototyping technology of a 37 m long boom in Pro/Engineering software. Then the rigid body simulation model has been built. Next modal superimposition method is adopted to change the 4 rigid body booms into flexible ones. Kinematics law and dynamic characteristics of 4 common working conditions had been studied then. Next tip displacement and the first boom hydraulic cylinder force of the 4 working conditions between rigid and flexible models have been researched. Furthermore the first natural frequencies of the structure have been calculated. The results show that the frequency of the horizontal condition has the lowest of all and the roof condition has the largest of all. Besides the cylinder forces of the flexible model are larger than the corresponding rigid ones because of the flexible boom vibration. Finally an experiment has been done on a boom test rig which proved that the established simulation model is reasonable and the frequency results are correct. All of these provide design reference to mechanical manipulator as well as reducing product development cost of such mechanism.

Vibration Characteristics of Concrete Pump Trucks with Multiple Postures and Multiple Conditions Based on the Secondary Development of HyperWorks

“…Excessive vibration at the end boom will cause great harm to CPT. Ren [8] established a model between rigid and flexible dynamics for booms, studied the vibration displacement of the end boom and the first boom hydraulic cylinder force under four common working conditions, and finally verified the accuracy of the established simulation model through tests. Tang [9] studied the dynamic characteristics of the boom system by establishing three dynamic models.…”

Accurate Modeling, Operation Laws and Commutation Timing Matching for Concrete Pumping Systems

“…The concrete pumping truck is a special kind of construction machinery to realize the rapid transportation and pouring of concrete, widely used in transportation, energy, construction, national defense and other fields [1][2][3]. The concrete pumping system (CPS) is the core unit of concrete pumping trucks, and its performance directly affects the pumping distance and efficiency of concrete flow [4].…”