GUY DEVICE FOR CRANE BOOM, CRANE, AND METHOD OF STRETCHING GUY IN CRANE BOOM

摘要

PROBLEM TO BE SOLVED: To improve a guy device for a crane boom so as to satisfy high performance demands when stretching a guy, while controlling required materials.;SOLUTION: A guy device comprises a guy rope for stretching a guy over a boom, a guy winch for supporting the guy rope, a tooth part connected to the guy winch and rotating together with the guy winch in response to the rotation of the guy winch to wind up or pull out the guy rope, a ratchet configured to engage with the tooth part and block the rotation of the guy winch toward a pull-out direction of the guy rope in a state of being engaged with the tooth part, and a pressing cylinder configured to selectively engage with the tooth part and apply force to the guy winch to rotate the guy winch in a wind-up direction by an operation in a state of being engaged with the tooth part.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2018,JPO&INPIT