The invention discloses a balanced type height limiting device suitable for a crane, and belongs to the technical field of hoisting machinery. The device comprises two hanging frame ropes hinged to aboom head hanging piece, a tetragonal collision frame hung below a boom head fixed pulley block through the hanging frame ropes and always kept in a horizontal state, and a limiting switch installed on the boom head hanging piece and connected with the upper ends of the hanging frame ropes; the tetragonal collision frame is of a hollow quadrangular structure with an inner cavity being a vertically-through cavity; the front wall and the rear wall of the tetragonal collision frame are each provided with two hanging rings used for fixing the hanging frame ropes; a steel wire rope inlet through groove is formed in the right side wall of the tetragonal collision frame; and a sealing plate is installed on the outer surface of the right side wall of the tetragonal collision frame. The limit lifting height of the lifting hook can be accurately and reliably limited; collision and friction with the steel wire ropes can be effectively avoided; abrasion of the steel wire ropes is greatly reduced;and the limiting device is accurate, sensitive, safe, economical, applicable, high in universality and convenient to install.
本发明公开一种适用于起重机的平衡式高度限位装置,属于起重机械的技术领域。所述装置包括两根铰接在起重臂头部吊挂件上的吊框绳,通过吊框绳吊挂在起重臂头部定滑轮组下方、始终保持水平状态的四方体撞框,安装在起重臂头部吊挂件上、与吊框绳上端相连的限位开关;四方体撞框是内腔为上下通腔的空心四棱柱结构,在四方体撞框的前后壁上均设置有两个用于固定吊框绳的吊环,在四方体撞框的右侧壁开设有钢丝绳入口通槽,在四方体撞框的右侧壁外表面安装有封口板。利用本发明能够准确可靠地限定吊钩的极限起吊高度,能够有效避免与钢丝绳的碰撞和摩擦,大大减少了钢丝绳的磨损,准确、灵敏、安全、经济、适用、通用性强、方便安装。
Balanced type height limiting device suitable for crane
一种适用于起重机的平衡式高度限位装置
2021-03-16
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |
Height limiting device for travelling crane device and travelling crane device
European Patent Office | 2021
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