The invention relates to the technical field of operation machinery, and provides a variable-amplitude pulley block supporting mechanism, a variable-amplitude device and operation machinery, the variable-amplitude pulley block supporting mechanism comprises a variable-amplitude pulley block and a supporting rod, and a main variable-amplitude steel wire rope of the operation machinery is wound around the variable-amplitude pulley block; the first end of the supporting rod is rotationally connected with the tail of the rotary table, the variable-amplitude pulley block is arranged at the second end of the supporting rod, and the supporting rod can rotate between a first position and a second position; when the supporting rod is located at the first position, the second end of the supporting rod is away from the turntable head; when the supporting rod is located at the second position, the second end of the supporting rod is close to the turntable head, and the bottom of the supporting rod abuts against a limiting mechanism on the turntable. The arm of force of the main variable-amplitude steel wire rope can be increased, the stress of the main variable-amplitude steel wire rope is reduced, and interference between the pulling plate and a ventral tube or other parts on the main variable-amplitude mast during transportation of an operation machine is avoided; when rotating to the second position, the supporting rod can abut against the limiting mechanism to share a part of variable amplitude force of the main variable amplitude steel wire rope so as to reduce the weight of the rear balance weight.
本发明涉及作业机械技术领域,提供一种变幅滑轮组支承机构、变幅装置及作业机械,变幅滑轮组支承机构包括变幅滑轮组和支承杆,变幅滑轮组供作业机械的主变幅钢丝绳绕过;支承杆的第一端与转台尾部转动连接,变幅滑轮组设在支承杆的第二端,支承杆能在第一位置与第二位置间转动;支承杆位于第一位置时,支承杆的第二端远离转台头部;支承杆位于第二位置时,支承杆的第二端靠近转台头部,支承杆底部与转台上的限位机构相抵。可增大主变幅钢丝绳的力臂,减小主变幅钢丝绳的受力,避免作业机械运输时拉板与主变幅桅杆上的腹管或其他部件形成干涉;支承杆转动到第二位置时可与限位机构相抵以分担主变幅钢丝绳的一部分变幅力,以减小后配重的重量。
Variable-amplitude pulley block supporting mechanism, variable-amplitude device and operation machine
变幅滑轮组支承机构、变幅装置及作业机械
07.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC: | B66C Krane , CRANES |
Variable-amplitude pulley yoke in-groove adjusting device, boom assembly and crane
Europäisches Patentamt | 2022
|Main pulley rope falling prevention device for variable-amplitude trolley of tower crane
Europäisches Patentamt | 2021
|