A method for evaluating the stiffness of a cabin suspension system for fork lift trucks

The stiffness parameters of cabin suspension have an important effect on the comfort of fork lift trucks. Analysis of the cabin system of fork lift trucks often requires the retrieval of the stiffness parameters of cabin suspension systems. Convenient methods of retrieving stiffness parameters without dismantling the cabin suspension system cannot be obtained unless a special bench test is conducted. This process is inconvenient for researchers and technicians. A cabin model with three degrees of freedom was constructed, including a simulation model, to provide a convenient method for retrieving stiffness parameters. A model for the identification of stiffness parameters was established on the basis of the test data and the simulation model. The stiffness parameters were identified through a case study and the values retrieved coincide with the test results. The results show that the method built is reliable and provides an effective way of retrieving the stiffness parameters of cabin suspension for fork lift trucks.

[1]  Herman Ramon,et al.  Conceptual Cab Suspension System for a Self-propelled Agricultural Machine¿Part 2: Operator Comfort Optimisation , 2005 .

[2]  Elham Hosseinzadeh,et al.  Thermal and water management of low temperature Proton Exchange Membrane Fuel Cell in fork-lift truck power system , 2013 .

[3]  Ali Jamali,et al.  Pareto multi-objective optimum design of vehicle-suspension system under random road excitations , 2014 .

[4]  Meiping Sheng,et al.  Damping identification in frequency domain using integral method , 2015 .

[5]  Pierre Lemerle,et al.  A SIMPLIFIED METHOD TO DESIGN SUSPENDED CABS FOR COUNTERBALANCE TRUCKS , 2002 .

[6]  Paul E. Allaire,et al.  An identification method for damping ratio in rotor systems , 2016 .

[7]  Yoshio Mizugaki,et al.  Closed-loop Parameter Identification of Permanent Magnet Synchronous Motor Considering Nonlinear Influence Factors , 2010 .

[8]  Grzegorz Tora.  STUDY OPERATION OF THE ACTIVE SUSPENSION SYSTEM OF A HEAVY MACHINE CAB , 2010 .

[9]  P. Donati,et al.  SURVEY OF TECHNICAL PREVENTATIVE MEASURES TO REDUCE WHOLE-BODY VIBRATION EFFECTS WHEN DESIGNING MOBILE MACHINERY , 2002 .

[10]  Jianrun Zhang,et al.  Performance of earth-moving machinery cab with hydraulic mounts in low frequency , 2014 .

[11]  Eugenio Cavallo,et al.  Ergonomic analysis of the effects of a telehandler's active suspended cab on whole body vibration level and operator comfort , 2016 .

[12]  Vibration analysis of viscoelastic tapered micro-rod based on strain gradient theory resting on visco-pasternak foundation using DQM , 2015 .

[13]  Lai Wei,et al.  Investigation of in-train stability and safety assessment for railway vehicles during braking , 2016 .

[14]  Somkiat Tangjitsitcharoen.  Development of Intelligent Identification of Cutting States by Spectrum Analysis for CNC Turning , 2008 .

[15]  Herman Ramon,et al.  Conceptual Cab Suspension System for a Self-propelled Agricultural Machine, Part 1: Development of a Linear Mathematical Model , 2004 .