CONVEYOR DRUM BELT SLIP TEMPERATURE CONTROL DEVICE Russian patent published in 2003 - IPC

FIELD: conveyor transport. SUBSTANCE: invention relates to belt conveyors, particularly, to belt slip temperature control devices. Proposed device to control slip of conveyor belt on drive drum includes temperature sensitive device with actuating mechanism to switch off conveyor drive electric motor and switch on device indicating belt slipping on drive drum. Temperature sensitive element of device is made in form of pneumatic bottle furnished with intake valve and filled with gas compressed to pressure higher than atmospheric, and pneumatic cylinder whose rodless working space communicates with pneumatic bottle through intake branch pipe and pipeline with threaded cap turned onto its end opposite relative to pneumatic bottle. Said cap is provided with inner space and it hermetically seals inlet section of pipeline. Plug made of fusible material is installed in pipeline in place of butt jointing of intake branch pipe and pipeline. Said plug hermetically closes passage sections of branch pipe and pipeline and thrusts by its end face against inner shoulder of threaded cap. Piston rod of pneumatic cylinder is hinge connected with actuating lever of traction switch electrically coupled with control unit of belt slip signaling device. EFFECT: simplified design, improved reliability when used both on lined or non-lined surfaces of drive drums. 1 dwg