手拉葫蘆向上提升重物時，順時針拽動手動鏈條、手鏈輪轉動，將摩擦片棘輪
、製動器座壓成一體共同旋轉，齒長軸便轉動片齒輪
、齒chi短duan軸zhou和he花hua鍵jian孔kong齒chi輪lun。這zhe樣yang，裝zhuang置zhi在zai花hua鍵jian孔kong齒chi輪lun上shang的de起qi重zhong鏈lian輪lun就jiu帶dai動dong起qi重zhong鏈lian條tiao，從cong而er平ping穩wen地di提ti升sheng重zhong物wu。下xia降jiang時shi逆ni時shi針zhen拽zhuai動dong手shou拉la鏈lian條tiao，製zhi動dong座zuo跟gen刹sha車che片pian分fen離li，棘ji輪lun在zai棘ji爪zhao的de作zuo用yong下xia靜jing止zhi

，五wu齒chi長chang軸zhou帶dai動dong起qi重zhong鏈lian輪lun反fan方fang向xiang運yun行xing
，從cong而er平ping穩wen下xia降jiang重zhong物wu。手shou拉la葫hu蘆lu一yi般ban采cai用yong棘ji輪lun摩mo擦ca片pian式shi單dan向xiang製zhi動dong器qi，在zai載zai荷he下xia能neng自zi行xing製zhi動dong，棘ji爪zhao在zai彈dan簧huang的de作zuo用yong下xia與yu棘ji輪lun齧nie合he


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