Structural Characteristics Analysis of Hydraulic Lifting System of a Forklift

Wang, Yao; Zhang, Qijiu; Xu, Mingwei; Gan, Xinji; Wang, Licai; Yan, Bin

doi:10.2991/iwmecs-18.2018.103

Cited by 1 publication

(3 citation statements)

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“…For the mast forward operation, the pressure P A at port A must be greater than the pressure P B at port B and vice versa in tilt backward operation. The flow rate through each port is estimated using equation (11).…”

Section: Hydraulic Subsystem Of the Triplex Mastmentioning

confidence: 99%

“…Many researchers have employed dynamic simulation models to describe the basic design and operation of machines. [6][7][8][9][10][11][12][13][14] Conversely, the involvement of the UX in the early phase of product development through simulation demands the description and faster computation for all sub-components and mechanisms of the mechanical systems in a realistic working environment. The multibody system (MBS) semi-recursive approach enables solution of the equations of motion of complex systems in real time.…”

mentioning

confidence: 99%

“…Conventional forklift simulation methods also focus on the development of the mast design system and do not consider the pulley and chain mechanisms or the realistic UX for the working cycles of the truck in the presence of the lifting loads. [6][7][8][9][10][11][12][13][14] The real-time multibody forklift model have been studied without discussing the hydraulics, pulley and chain mechanism and mast design system. 25 The objective of this study is to combine semirecursive approach, hydraulic actuators, tyres, and pulley and chain models with associated contacts in the real-time simulation model of a 3-W counterbalance 2.0-t EVOLT48 electric forklift for a realistic UX.…”

mentioning

confidence: 99%

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Targeting the user experience in the development of mobile machinery using real-time multibody simulation

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Advances in Mechanical Engineering

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Applying a semi-recursive multibody approach enables the solution of the equations of motion of a complex system in real time. This makes it possible to conduct human-in-loop simulations and analyse the user experience. The idea of recognizing the user experience to produce more efficient, competitive, and user-friendly products has been limited thus far to the field of information technology and the development of light physical products. This study introduces a simulation modelling procedure for a complex forklift mast system that can be used to help analyse the user experience. A multibody forklift model is introduced that includes the electric motors, a pump, a freelift, a mainlift and tilt cylinders, actuators, pulley and chain mechanisms, contacts, and tyres. The viscoelastic behaviour of the chain during longitudinal and transverse movement is simulated using a discrete model approach. Triplex mast speeds and hydraulic system efficiencies across working cycles are used to verify the performance of the introduced real-time simulation model against measurements taken from an equivalent reference forklift. To better evaluate the developed model, experienced and inexperienced forklift drivers were asked to drive an updated simulator and provide feedback. User experience inputs that can be made available early on in development using this new modelling approach will permit experts to evaluate and design more efficient complex mechanical systems.

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Section: Hydraulic Subsystem Of the Triplex Mastmentioning

confidence: 99%

mentioning

confidence: 99%