Robot with changeable position of body with respect to a vehicle portion

A robot comprising:

• two arms;
• a body to which the two arms are connected;
• a vehicle portion to move by rotation of wheels;
• and
• a body position changing mechanism to support the body such that a position of the body with respect to the vehicle portion is changeable, wherein
• the body position changing mechanism includes
• an elevation angle changing mechanism to support the body such that an elevation angle, which is an angle formed by a vehicle portion reference plane, which is a plane perpendicular to an azimuth axis intersecting the vehicle portion, and a direction in which the body extends, is changeable, and
• an azimuth angle changing mechanism to support the elevation angle changing mechanism rotatably around the azimuth axis, the azimuth angle changing mechanism being provided in the vehicle portion, and the elevation angle changing mechanism includes
• a base supported by the azimuth angle changing mechanism,
• a moving portion to be moved along a straight line parallel to the vehicle portion reference plane on an upper side of the base,
• a first link to support the body, the first link having a lower end connected to the moving portion rotatably and extending in a direction which forms the elevation angle with respect to the vehicle portion reference plane,
• a second link having an upper end connected to the first link rotatably, and
• a link lower end support portion to which a lower end of the second link is connected rotatably, the link lower end support portion being provided in the base.