Importance

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Abstract

The present invention relates to an electrohydraulic control system (10) for an underground support system, with a valve block (1) which accepts grouped electrically-operated actuators for example electro-magnets (2, 2') and several control valves of hydraulic valves switched with these electro-magnets and with a circuit board (7) containing an electronic circuit to which all the actuators (2, 2') of the valve block (1) are connected through a disconnectable plug-in connection. The circuit board (7) is connected via a cable (21) to a controller (20) for data communication in the support system. The invention allows simultaneous connection of all the electro-magnets (2,2') with the circuit board (7). For this purpose the circuit board (7) is located in a hood-type enclosure part (9) which is attachable to the back (3) of the valve block (1) and when assembled forms a sheet over all the electro-magnets (2,2'). The connector parts (6 to 6''), which are essentially rigidly fixed to the circuit board (7), and cast in sealing compound (19), the arrangement of which connector parts (6 to 6'') is matched to the grouping of the electro-magnets (2, 2') on the valve block (1) , which connector parts (6 to 6'') engage simultaneously in associated plug-in sockets (5) on the electro-magnets (2,2') when the hood (9) is assembled.

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First Claim