Monitoring device for heat treatment furnace

The utility model relates to a heat treatment furnace monitoring device which comprises a furnace body and a monitor, a base is fixedly installed at the bottom of the furnace body, an adjusting device is arranged outside the monitor and comprises a driving motor, a shaft rod is fixedly installed on an output shaft of the driving motor, and a main gear is fixedly installed at the end, away from the driving motor, of the shaft rod. A guide block is in threaded connection with the outer side of the screw rod; a connecting rod is fixedly mounted on the right side of the guide block; a lantern ring is fixedly mounted at one end, far away from the guide block, of the connecting rod; a sliding rod is inserted into the inner side of the lantern ring; according to the thermal treatment furnace monitoring device, workpieces at different heights can be monitored conveniently, the monitoring effect is effectively improved, and the problem that workpieces placed at different heights are inconvenient to observe through an