Moment conversion device

The utility model provides a moment conversion device belongs to mechanical technical field. It has solved the problem of current spanner poor stability when improving moment. This moment conversion device includes the casing, be equipped with the input shaft in the casing, output shaft and jackshaft, first little drive wheel has been linked firmly on the input shaft, first big drive wheel and thelittle drive wheel of second have been linked firmly on the jackshaft, second largest drive wheel has been linked firmly on the output shaft, first little drive wheel links to each other with first big drive wheel, the little drive wheel of second links to each other with second largest drive wheel, the mount has still been linked firmly in the casing, be equipped with first bearing between the inner of output shaft and the mount, be equipped with the second bearing between the inner of input shaft and the mount. This moment conversion device has makes the spanner dismantle the good advantageof stability laborsaving