Applied Forces in the Handling Unit Fixation Mechanism

Abstract

The paper presents a construction design of a testing device, which was built for the purpose of checking the functional properties of the movement fixation mechanism of handling units, which is used for locking pallets with cars in place in some parking houses, developed by the enterprise KOMA Industry s.r.o. The testing device uses two positioning tables, whose moving parts are attached perpendicular to each other in the frame of the testing device. A pallet lock is attached to the sliding part of the vertical positioning table, which consists of three basic parts: body, pulley holder and compression coil spring. A plate is attached to the sliding part of the horizontal positioning device which is adapted to receive the stop of the fixation mechanism. This paper presents values of the measured vertical forces acting on the force transducer, which were generated by the reshaped coil spring with a wire of circular cross-section during the rolling of the pallet lock roller over the sloped surface of the stop. It presented an experimental procedure and the results of the measured vertical forces exerted by a reshaped coil spring with a wire of circular cross-section on the force sensor during the insertion of the pulley roller into the gap between the two end faces of the stop assembly. The experimental procedure and the results of the measured vertical forces exerted by the reshaped coil spring with a wire of circular cross-section on the force sensor during sliding of the lock pulley roller out of the gap in the stop are given in one of the chapters. The conducted experimental measurements of the functional properties of the fixation lock of the pallet and the acquired values of acting vertical forces will serve to optimize the attaching of pallet fixation locks to the steel girders of the structure of the cell rack parking space of the automatic parking house, over which the chain conveyer transports pallets with vehicles into specified parking positions.

Keywords

• coil spring compression force
• fixation mechanism
• fixation mechanism lock
• fixation mechanism stop
• testing device