Recycling and reusing system for steel bars in concrete beam

The invention relates to a recycling and reusing system for steel bars in a concrete beam. The recycling and reusing system comprises a material conveying table, a crushing machine, a rolling crushing machine and a main steel bar shearing machine. The material conveying table, the crushing machine, the rolling crushing machine and the main reinforcing steel bar shearing machine are sequentially arranged in a straight line; the conveying table is provided with a driving device; a crushing mechanism is arranged in the crushing machine and is used for crushing a concrete beam to be treated; the rolling device is a rolling cutter capable of vertically reciprocating; a main reinforcing steel bar shearing machine is arranged behind the rolling crusher, is a gantry type shearing machine, intermittently moves, and is used for shearing a main reinforcing steel bar at a fixed length and outputting the main reinforcing steel bar. Concrete blocks and stirrups which are low in repeated utilization rate are crushed and she