Do not overload a single skating car use.

electric chain block operation should make the force hand chain bracelet in the central plane of the wheel shall not be stayed.
Single skating car rally abnormal cases where the hand, must not jerk, should immediately stop using, check the reason.
Single skating car gear and track surface regularly filling oil, and check for loose fasteners.
Trolley riders pull single skating is to support the work of the I-beam, the deformation, distortion, cracks, or does not meet the criteria and have other defects can not be used as single-track lane of I-beam.
Single skating car lifting weights, and forbids any person to walk or work under heavy loads.
Single skating car when lifting heavy beam so that the center of gravity within the plane of the web, do not lifting.