Electric chain block

An electric chain block for hoisting or lowering a load chain coupled to a lower hook by rotating a load sheave by driving of a motor, the electric chain block comprising:

• a body part including the motor and the load sheave;
• and
• a chain inlet/outlet which is provided at a bottom surface of the body part and through which the load chain on a load side gets in/out, wherein
• the chain inlet/outlet comprises:
• a first guide groove which is provided on an opening side of the chain inlet/outlet, and includes a first longitudinal groove and a first lateral groove which have a groove length corresponding to a length in a long side direction of each link of the load chain, the first longitudinal groove and the first lateral groove orthogonally crossing each other;
• and
• a second guide groove which is provided on a side deeper in the body part than the first guide groove is, and includes a second longitudinal groove and a second lateral groove which have a groove length corresponding to a length in a short side direction of each link of the load chain, the second longitudinal groove and the second lateral groove orthogonally crossing each other,
• the first guide groove comprising:
• narrowed parts which face each other across a groove width corresponding to a wire diameter of the link of the load chain in a width direction of the first longitudinal groove and face each other across the groove width in a width direction of the first lateral groove to determine into which of the first longitudinal groove and the first lateral groove each link of the load chain is introduced when the link is pulled in;
• and
• expanded groove parts which are provided on an outside further away from a center of the chain inlet/outlet than the narrowed parts are, and have a width larger than the groove width.