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Vol. 170, Issue 5, May 2014, pp. 177-183

 

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Vibration Study of Fork-lift Truck Based on the Virtual Prototype Technology
 

YANG Mingliang, Xu Gening, Dong Qing, HAN Xiaojun

Taiyuan University of Science and Technology, Taiyuan, 030024, China

E-mail: yangmingliang1997@163.com, xugening@163.com, dongqing1989032800@126.com, hanxiaojun116@126.com

 

 

Received: 22 February 2014 /Accepted: 30 April 2014 /Published: 31 May 2014

Digital Sensors and Sensor Sysstems

 

Abstract: The forklift truck is one of important equipments of the modern logistics system. As the forklift truck is running, the driver seat and steering wheel of a certain type of fork-lift truck vibrate strongly, virtual prototyping technology and multi-body dynamics are used to make simulation of dynamic performance of fork-lift truck in this paper, and then the test result is compared with time course load that obtained from frame junction with the annex. We should repeatedly modify the simulation model based on test results, which is consistent with the actual results. Based on this model, so we put forward measures for improving design: Firstly, the axis of rotation of oval steering axle is implied; Secondly, the overhead guard is connected with the frame by the rubber cushion blocks at four different locations; Thirdly, the engine is fixed on the frame by the rubber cushion blocks (shock mount) in two different position. The improved simulation and experimental verification are carried out under the same conditions, and the results show that the fundamental frequency of seat of the improved fork-lift truck and vibration energy are lower. The result proves the practical value of this method in the research of the vibration characteristics of complete engineering machine.

 

Keywords: Virtual prototype, Fork-lift truck, Seat vibration, Multi-body dynamics.

 

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