The invention relates to the technical field of crane hooks, in particular to a rack transmission self-opening and closing lifting appliance which comprises a driving mechanism, a lifting mechanism and a lifting mechanism, the anti-falling mechanism comprises a buckle, a rotating section and an extending section, the buckle is fixed to the side, located at the free end, of the lifting hook, the rotating section is slidably connected with the housing, one end of the extending section is connected with the rotating section, and the other end of the extending section is movably connected with the buckle; one side, facing the opening end of the lifting hook, of the end part of the extending section protrudes to form a limiting block, and the driving mechanism drives the rotating section to rotate relative to the lifting hook housing, so that the limiting block penetrates through the buckle and abuts against the inner side wall of the buckle; according to the rack transmission self-opening and closing lifting appliance, the notch formed by the lifting hook is blocked by arranging the rotating section and the extending section, under the clamping effect of the limiting block and the buckle, the locking strength of the anti-falling mechanism is guaranteed, the anti-falling mechanism is driven through the driving mechanism, manual operation is replaced, and therefore automatic opening and closing of the anti-falling hook are achieved, and in addition, the rack transmission self-opening and closing lifting appliance is simple in structure and convenient to use. And the universality is high.
本发明涉及起重机吊钩技术领域,尤其涉及一种齿条传动自启闭吊具,包括:驱动机构,固定在吊钩罩壳上;防脱机构,包括卡扣、旋转段和延伸段,卡扣固定在吊钩位于自由端的一侧,旋转段与罩壳滑动连接,延伸段一端与旋转段连接,另一端与卡扣活动式连接;延伸段端部朝向吊钩开口端的一侧凸起,形成限制块,驱动机构驱动旋转段相对于吊钩罩壳转动,使得限制块穿过卡扣,并抵接于卡扣的内侧壁上;通过设置旋转段和延伸段,堵住吊钩所形成的缺口,并在限制块和卡扣的卡死效果下,保证防脱机构的锁紧强度,通过驱动机构来驱动防脱机构,替换人工手动操作,从而实现防脱钩的自动化打开和关闭,此外,该齿条传动自启闭吊具结构简单,通用性较强。
Rack transmission self-opening and closing lifting appliance
一种齿条传动自启闭吊具
15.09.2023
Patent
Elektronische Ressource
Chinesisch
IPC: | B66C Krane , CRANES |
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