A chain block (10) is provided including a first frame (11), a second frame (12), a wheel cover side structure including a wheel cover (14) which covers the hand wheel (80) and residing on an opposite side of the first frame (11) in a direction away from the second frame (12), and a gear case side structure including a gear case (13) covering a gear member and residing on an opposite side of the second frame (12) in a direction away from the first frame (11), and each of the first frame (11) and the second frame (12) is provided with a rolling restriction portion restricting rolling along outer circumferences of the first frame (11) and the second frame (12) in a case of a standing posture in which the first frame (11) and the second frame (12) contact an installation part at the same time.