The invention discloses a
brake device of a vacuum pipeline wheel rail
train, which at least comprises a
brake disc, a
clutch a, a belt
pulley a, a
transmission belt, a tensioning mechanism, a belt
pulley b, a speed change gear box, a
clutch b, a magnetic
coupling, a magnetic suspension bearing, a
flywheel, a vacuum cavity and a cooling device, wherein the
clutch a and the clutch b are automatically controlled by a computer; during braking, the clutch b is jointed with the magnetic
coupling firstly, then the clutch a is combined with the
brake disc, an axle drives the
flywheel to rotate through the
transmission belt and the speed change gear box, and the
kinetic energy of the axle is changed to the
kinetic energy of the
flywheel; when the rotating speed of the flywheel reaches the maximum value, the clutch a is disconnected from the brake disc, the clutch b is disconnected from the magnetic
coupling, and the flywheel still rotates at a high speed; and when the
train starts, the clutch a is combined with the brake disc firstly, then the clutch b is jointed with the magnetic coupling, the
kinetic energy of the flywheel is transferred to the axle through the gear box and the
transmission belt, and thus the braking energy is changed to traction power.