On developing an automatic control system for the dump conveyor of a wheel excavator

Yakov Liberman,Olga Lukashuk,A Glezer,S Roshchupkin

doi:10.1051/matecconf/202032901004

Abstract

One of the main ways to increase the rotary excavator productivity is to automate excavator operation. The article presents an automatic speed adjustment system for the stacking conveyor belt of a trench rotary excavator. It is shown that the automated control system will allow taking into account the rotor actual rotation speed and the bucket fill factor, processing data and solving tasks of the excavator operation automatic control in excavation mode. The represented automated control system will ensure the conveyor operation with the necessary, but not maximum speed. Therefore, the conveyor will not work “in vain”, that, in its turn, will reduce operating costs including energy.

Highlights

Due to intensive building activity development in recent years the zero cycle earthworks volume on buildings and constructions production has significantly increased in our country [1,2,3]. Such works are often performed using trench rotary excavators (TRE), which are a set of multi-bucket earth-moving machines with a rotating wheel equipped with elements for cutting and lifting soil from the trench with buckets, a tractor, and a stacking conveyor that moves the soil extracted from the trench to a certain area remote from the excavator [4, 5]
QQQQ∙ψψψψ∙gggg∙HHHH, 3600∙1000 where gggg is the acceleration of gravity, m/s2, H is the height of the soil lifting with the conveyor in the vertical direction, m
The third component is calculated as follows ffff∙QQQQ2∙VVVVbbbb, 3600∙1000 where f is the soil friction coefficient against the conveyor side flaps steel; Vb is the speed of the conveyor belt, m/s, and the fourth component is calculated as follows

Summary

Introduction

Due to intensive building activity development in recent years the zero cycle earthworks volume on buildings and constructions production has significantly increased in our country [1,2,3] Such works are often performed using trench rotary excavators (TRE), which are a set of multi-bucket earth-moving machines with a rotating wheel equipped with elements for cutting and lifting soil from the trench with buckets, a tractor, and a stacking conveyor that moves the soil extracted from the trench to a certain area remote from the excavator [4, 5]. The rotary trench excavator is much-in-demand for constructing gas pipelines, sewer and collector utilities, laying underground communication systems for kilometer distances, and digging shallow ditches It is convenient for excavating earth during excavations or large-scale repairing and rescue operations. Let's consider the theoretical prerequisites for building the automation system that allows to implement this way

The main part

Experiments have also revealed that

Conclusion