Experience with one Heavy Vehicles On-Board Weighing System Solution

Abstract

Mining, construction, and other special vehicles for heavy use are designed to work under high‐performance and off‐road working conditions. The driving and executive mechanisms of the support structures and superstructures of these vehicles frequently operate under high loads. Such high loads place the equipment under constant risk of an accident and can jeopardize the dynamic stability of the machinery. An experimental investigation was conducted on a refuse collection vehicle. The aim of this research was to determine the working conditions of a real vehicle: the kinematics of the waste container, that is, a hydraulic rotate drum for waste collection; the dynamics of the load manipulator (superstructure); the vibrations of the vehicle mass; and the strain (stress) of the elements responsible for the supporting structure. For an examination of the force (weight) on the rear axle of a heavy vehicle, caused by its own weight and additional load, a universal measurement system is proposed. As a result of this investigation, we propose an alternative system for continuous vehicle weighing during waste collection while in motion, that is, an on‐board weighing system, and provide suggestions for measuring equipment designs.

Determination of heavy machines performances by using a measuring system with telemetric synchronization and transmission of signals

“…For mining stackers, as larger earthmoving machines, the frequency band of the fi rst 100 eigenfrequencies is ω=0.07-12.75 Hz, while the critical eigenfrequencies of resonant vibration in the vertical plane for the main structural parts are in the range of ω=2. [7][8][9][10][11][05]. A typical scheme, which has been in use for several years, is given in Fig.…”

“…Weak signals have only a few mV. Thus, one of the important criteria for selecting the sensors is the corresponding length of the installation, [10]. A good connectivity of the sensors and amplifi ers of measuring signals with a suffi cient number of channels for exploring lifting machines indicates a better choice of measuring system.…”

“…Considering the type of the measured object such as cranes and export mining machines, the measuring equipment requires high fl exibility in the conditions of on-site experimental testing. This implies resistance to: moisture, extreme external temperatures, dust, impacts, [10]. According to the recommendation of manufacturers, the best transmission characteristics are displayed by the measuring equipment, primarily cables and connectors, with physically robust design, good contact force and high quality conductor material.…”

“…For the purpos-es of permanent monitoring of pressure dynamic forces (e.g. structure weight), sensors such as load cells, force (load) washers and weighing systems are used, [10]. A reliable solution for the force sensor, in large crane tests, should be robust, quick to operate, long-lasting and have the ability to measure the medium pressure force and tensile force of ± 100+ kN.…”