Electro-hydraulic control system for a mineral mining installati

Details Electro-hydraulic control system for a mineral mining installati Electro-hydraulic control system for a mineral mining installati

1988-05-09

1991-10-29

Ruggiero, Joseph

Boots, shoes, and leggings

364133, 364400, 405302, G06F 1546, E21D 2312

Patent

active

050620339

ABSTRACT:
An electro-hydraulic control system for a mineral mining installation has a plurality of control units (4) sub-divided into operational groups (I, II, III) with associated roof supports. Each group has its own power source (5) and power at an intrinsically safe level is provided to each of the groups independently of and in isolation from the other groups. The control units (4) are interconnected via a system data bus (13,14) in the form of conductors of multi-core cables which also carry the electrical power. A further data bus (20) independent of the system bus (13,14) is coupled to some of the units of the groups.

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patent: 4748560 (1988-05-01), Kataoka

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