The invention provides an electric chain hoist, which can press a limit switch through collision of a lower lifting hook to a main body part, and can enable a chain link to easily enter a chain access opening. A chain entrance/exit (611) through which a load chain (C1) on the load side enters/exits is provided with a first guide groove (620) having a first vertical groove (621) and a first lateral groove (622); furthermore, the chain entrance/exit (611) is provided with a second guide groove (630), which is provided further toward the inside of the main body section (20) than the first guide groove (620), and which has a second vertical groove (631) and a second lateral groove (632). Furthermore, the first guide groove (620) has a constricted portion (623) that regulates which of the first vertical groove (621) and the first lateral groove (622) is introduced when each link (C1a) of the load chain (C1) is drawn in, and further has a groove bulging portion (624) that is provided further from the center of the chain entrance (611) than the constricted portion (623) and has a width greater than the groove width (L2).
本发明提供的电动链式葫芦,能够通过下部吊钩向主体部的碰撞而按压限位开关,且能够使链节容易地进入链出入口;用于使负载侧的负载链(C1)进出的链出入口(611)具备第一引导槽(620),该第一引导槽(620)具有第一纵槽(621)和第一横槽(622);另外,链出入口(611)具备第二引导槽(630),该第二引导槽(630)设置在比第一引导槽(620)更靠主体部(20)里侧的位置,且具有第二纵槽(631)和第二横槽(632);而且,第一引导槽(620)具有在负载链(C1)的各链节(C1a)被拉入时规定其被引入第一纵槽(621)和第一横槽(622)的哪一者的收缩部(623),进一步地还具有槽鼓出部(624),该槽鼓出部(624)设置于比收缩部(623)更远离链出入口(611)中心的外侧位置,且具有比槽宽(L2)大的宽度。
Electric chain hoist
电动链式葫芦
2022-10-04
Patent
Electronic Resource
Chinese
IPC: | B66D Haspeln , CAPSTANS |