CONNECTING DEVICE FOR PAN OF MINING EXTRACTION DEVICES, PAN AND FASTENER FOR EXTRACTION DEVICES Russian patent published in 2015 - IPC E21C35/12 

FIELD: mining.

SUBSTANCE: invention relates to the connecting device intended for joining of the fastener to the side element of the pan of the mining extraction device, to the pan and the fastener for the extraction device. The connecting device contains the first connecting couplings located on the side element and the counter-couplings located on the fastener which can be joined in a demountable way to the connecting couplings. Besides, at least one lock member which prevents disjoining of the connecting coupling and the counter-coupling in a closed position is provided. In order to mount or demount quickly the fastener, the connecting coupling is narrowed upwards in the form of trapeze, and the counter-coupling is narrowed upwards in the form of trapeze, and by means of vertical movement the connecting coupling and the counter-coupling can be inserted one to each other or disjoint from each other, and the connecting coupling and the counter-coupling are fitted with blocking strips and/or grooves which they hold at least in locked state.

EFFECT: design improvement.

24 cl, 7 dwg