The heavy-load
clutch device comprises a shell, an end cover, a guide
assembly, a
piston and a sealing unit, the end cover and the
piston are correspondingly arranged in the shell, the end cover and the
piston are connected through the guide
assembly, the guide
assembly can guide the piston to reciprocate along the axis of the shell, and the sealing unit comprises a check ring assembly. The check ring assembly is arranged between the shell and the piston so as to support the piston and restrain
radial deviation of the piston. According to the heavy-load
clutch device, a dynamic anti-deflection
system is constructed through the guide assembly and the check ring assembly, the guide assembly provides accurate axial movement track constraint for the piston, the piston and the shell are filled with the check ring assembly, radial deflection of the piston under the high-temperature and high-pressure working conditions is effectively restrained, and the service life of the piston is prolonged. The dynamic
impact and deflection risks of the sealing assembly are reduced while the
linearity and accuracy of piston movement are ensured, so that abrasion of the sealing ring and leakage of hydraulic oil are reduced, the service life of the
clutch device in a
heavy load environment is prolonged, and the reliability of the clutch device in a
heavy load environment is improved.