1、在操作者步行范围内和重物通过的路线上应无障碍物。 2、群吊电动葫芦吊钩滑轮应转动灵活。 3、制动器应灵敏可靠。 4、群吊电动葫芦运行轨道上应无异物。 5、上下限位器动作应准确。 6、吊钩止动螺母应紧固。 7、吊钩在水平和垂直方向转动应灵活。 8、群吊电动葫芦手控按钮上下、左右方向应动作准确灵敏，电动机和减速器应无异常声响。 1, there should be no obstacle in the route of the operator's walking and the passage of heavy objects. 2, group crane electric hoist hook pulley should be flexible rotation. 3, the brake should be sensitive and reliable. 4, group crane electric hoist running track should have no foreign matter. 5. The action of the upper and lower locator should be accurate. 6, the hook stop nut should be fastened. 7. The hook should be flexible in horizontal and vertical directions. 8. Hand-operated button of group hoist should move up and down, left and right direction accurately and sensitively, motor and speed reducer should have no abnormal sound.