Electro-Hydraulic Proportional Control for Use on a Rubber Tired Backhoe Loader 891948

Within recent years, the use of electric remote controlled proportional valves in the mobile market has increased dramatically.
Manufacturers have realised that the use of electro-hydraulics opens up new design opportunities such as remote valve installations, precise fingertip control, electronic management of hydraulic machines, in fact an exciting new world.
Engineers have new options and possibilities to meet the customers demands for higher productivity, less power consumption and an ergonomically improved working environment.
Fig. 1 shows a representative selection of valves, joy stick controllers and electrical accessories for mobile equipment such as the backhoe described in this paper.
The electrical activation system is indicative of the direction development is taking. More and more electronics for control, regulation, monitoring and automating hydraulic systems are being used.
A description of a system where the mechanical control system has been replaced by an electro-hydraulic control system by Danfoss will follow.
The control system was built into a CASE 580K rubber tired backhoe now marketed as the CASE 580K Prestige.
The following subjects will be discussed:
The Hydraulic System
The Electrical System
The Operators Input and Comfort
Control of the Loader
Control of the Backhoe


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.