Snow removal device, vehicle, and track transportation system

A snow removal device comprising:

• a brush rotary shaft that is mounted on a vehicle body traveling along a track in front of running wheel provided for the vehicle body in a running direction in which the vehicle body travels and that is rotated about an axis extending in a direction along a vehicle width direction of the vehicle body in a direction opposite to the rotation direction of the running wheel;
• a travel brush part that protrudes radially outward from an outer circumferential surface of the brush rotary shaft and comes into contact with a runway of the track with which the running wheel is in contact and
• a brush pressing part that presses the travel brush part toward the runway,
• a rotation transmission part configured to transmit rotation of the running wheel to rotate the brush rotary shaft,
• wherein the travel brush part is provided in a spiral region formed on the outer circumferential surface of the brush rotary shaft in a spiral manner extending toward an axis direction in which the axis extends as going toward a circumferential direction of the brush rotary shaft, and
• wherein the rotation transmission part includes:
• a running wheel contact shaft that rotates while coming into contact with the running wheel;
• and
• a speed change part that changes a rotating speed of the running wheel contact shaft and transmits the changed rotating speed to the brush rotary shaft.