Labor saving spanner with non-impulse type structure

The utility model relates to an effort-saving wrench with non-impact structure, which includes a micro-motor (or pneumatic motor) as the power and consists of a gear speed-down case, a torsion follower, a torsion footing and a handle. The gear speed-down case and the torsion follower adopts multi-grade planet wheel structure to make the output moment can be increased by ten times or even hundreds of times under the deceleration of rotation speed of the motor (or pneumatic motor) by the multi-grade planet gear group; the effort-saving wrench with the non-impact structure has the advantages of large output moment, small operation site, safe usage and simple operation; compared with the manual effort-saving wrench, the non-impact wrench structure has a fast speed and a higher repeated precision and is more convenient during usage; compared with the jackhammer, the non-impact structure is safer, lighter without impacts and noises; the effort-saving wrench with non-impact structure is suitable for the disassembly and assembly of the tyre nuts, bridge bolts and large nuts/bolts in the industries of industrial and mining, oil field, shipping, landification and chemical industry and so on.