Title: Three-point based truck mounted platform levelling mechanism

Authors: Mootaz E. Abo-Elnor

Addresses: Mechanical Equipment Department, Military Technical College, Cairo, 11811, Egypt

Abstract: Design methodology of moving platform levelling mechanism is introduced based on operational limitation of ground level within tilt and pitch angles referenced to horizontal plane. Three point support platform levelling mechanism is designed. The proposed levelling mechanism operates such that levelling is achieved by a sequential angular displacement of tilt link and pitch link. An analytical kinematics model based on loop-closure constraint equations is proposed, describing platform tilt-pitch due to ground topology status and corresponding tilt link and pitch link angular displacement to restore the top platform level. A 3D CAD model of the proposed levelling mechanism is constructed and a numerical simulation of tilt and pitch links angular displacement to restore top platform level for different moving base orientations due to ground topology status is carried out to validate the proposed mechanism kinematics and analysis of mechanism behaviour while restoring top platform levelling.

Keywords: platform levelling; loop-closure kinematics; tilt-pitch mechanism; roll-pitch mechanism; stabilised platform; levelling means; roll-pitch stabilisation; heavy stabilised platform.

DOI: 10.1504/IJHVS.2024.138389

International Journal of Heavy Vehicle Systems, 2024 Vol.31 No.3, pp.336 - 347

Received: 08 Aug 2022
Accepted: 11 Aug 2022
Published online: 02 May 2024 *

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