Abstract: Robot includes two arms, a body, a vehicle portion, and a body position changing mechanism. Body position changing mechanism includes an elevation angle changing mechanism that supports body such that an elevation angle with respect to a vehicle portion reference plane is changeable, and an azimuth angle changing mechanism that supports elevation angle changing mechanism. Elevation angle changing mechanism includes a moving portion that is moved along a straight line parallel to the vehicle portion reference plane, a first link that includes a lower end connected to moving portion rotatably, extends in a direction forming an elevation angle with the vehicle portion reference plane, and supports body, a second link that includes an upper end connected to first link rotatably, and a link lower end support portion to which a lower end of second link is connected rotatably.

Abstract: To make a height of a robot lower than the conventional one in a posture in which the height of the robot is lowered. Robot 1 includes two arms 5, a body 12 to which two anns 5 are connected, a vehicle portion 1W that moves by rotation of wheels, and a body position changing mechanism 1B that supports body 12 such that the position of body 12 with respect to vehicle portion 1W is changeable. Body position changing mechanism 1B includes an elevation angle changing mechanism 17 that supports body 12 such that an elevation angle with respect to a vehicle portion reference plane is changeable, and an azimuth angle changing mechanism 16 that supports elevation angle changing mechanism 17.