Simple and easy main shaft structure

The utility model relates to an annex and the part technical field of cleaning machine equipment are a simple and easy main shaft structure particularly, including gear box, bevel gear assembly and center pin, in the gear box including two at least intermeshing's bevel gear assembly in order realizing single -stage or multistage speed reduction, in one of them bevel gear assembly detachably be equipped with with the endocentric center pin of gearbox shaft line, the center pin can with synchronous rotation of bevel gear, center pin one end and rotary joint link to each other and guarantee the synchronous of center pin and rotary joint through the linkage piece and rotate, rotary joint includes rotation portion and fixed part, the fixed part is continuous with high -pressure pipeline. Compared with the prior art, the utility model, simple structure is feasible in the combination, easily installation and dismantlement, and its advantage lies in: adopted simple and easy main shaft structure to replace current sin