Crane hook and crane truck

摘要

A hook has a hook body which has an attachment portion to be attached to a rope at a base end portion and which is curved in an L-shaped from the base end portion to a tip end portion, a latching tool which is rotatably supported by the hook body and which is brought into contact with and separated from a curved inner surface of the hook body on the tip end portion side of the hook body relative to a rotation center, a biasing member biasing the latching tool in a direction where the latching tool is caused to abut on the hook body, and a lock pin which is detachable from and attachable to the latching tool between the rotation center and a rotation tip and which abuts on the curved inner surface of the hook body when the lock pin is attached to the latching tool to regulate the rotation of the latching tool against biasing force of the biasing member.

主权项

1. A crane hook being suspended from a rope, said crane hook comprising:
a hook body having an attachment portion to be attached to the rope at a base end portion and being curved in an L-shaped from the base end portion to a tip end portion; a shaft being fixed to the hook body; a rotation member being rotatably supported by the shaft and having an abutment portion to be brought into contact with and separated from a curved inner surface of the hook body on a side of the tip end portion of the hook body relative to the shaft; a biasing member biasing the rotation member in a direction where the rotation member is caused to abut on the hook body; and a regulating member being detachable from and attachable to the rotation member, wherein the rotation member has a plurality of through-holes penetrating in an extending direction of the shaft, the through-holes including: a first through-hole through which the regulating member is passed, a second through-hole into which the shaft is passed at position distant from the abutment portion relative to the first through-hole, and a third through-hole through which the regulating member is passed at position distant from the abutment portion relative to the second through-hole, and the regulating member abuts on a curved inner surface of the hook body when the regulating member is passed through the first through-hole to regulate rotation of the rotation member against biasing force of the biasing member, and permits the rotation of the rotation member when the regulating member is passed through the third through-hole.