Metering device of crawler-type steel grabbing machine

The utility model discloses a metering device of a crawler-type steel grabbing machine. A bucket rod and a grabbing mechanism are arranged on the crawler-type steel grabbing machine. The grabbing mechanism comprises a grab bucket and a gripper, the grabbing mechanism comprises a weighing sensor, one end of the weighing sensor is connected to the bucket rod through a hanging block, the weighing sensor comprises an annular elastic body, and two concentric but non-through grooves are formed in the outer walls of the two sides of the annular elastic body; wherein the wall between the grooves is aninduction wall, an induction circuit is arranged on the induction wall, the induction wall comprises resistance strain gauges pasted on the two side walls of the induction wall, and the resistance strain gauges are electrically connected with various compensation resistors and used for compensating errors in the circuit. The crawler-type steel grabbing machine has the advantages that the weighingsensor is arranged on the