起重机的种类甚多,其中最流行而大多数采用的,有一种升降翻斗机,能自动倾注所升载之物于指定地点,非常便利,所以坑矿斜井,坚井及一般运输地方多利用之。普通翻斗可分两种:一种是固定式,按装在固定位置进行工作,不能移动,如矿山斜井竖井等处所用的翻斗即是,另一种可以移动,就是在此处工作完毕,再移往其他地点,或沿轨道,或装车轮以移动之,如第一图所示: 起重升降翻斗的运法不一,为减轻起重,有的同时连接两斗于钢绳两端,即一托升起,另一斗下降;也有的一端縏一斗,另一端縏重锤来平衡的,但设备规模最小的,也可不用双斗或平衡铁锤,动转时主要用电动机转动捲扬机,再出捲扬机上的捲筒将翻斗钢绳捲上放下,来进行操作。至于翻斗自动倾倒的原理,也不难了解,即当翻斗提到一定地点,或提出于矿井外部时,该处设有钢轨,翻斗旁的钢轮及 Many types of cranes, one of the most popular and most used, there is a lift tipping machine that can automatically pour the contents of the lifting of the designated location, very convenient, so mine inclined shafts, shafts and general transport areas to use more It Ordinary dump can be divided into two types: one is fixed, installed in a fixed position by the work, can not move, such as mine inclined shafts and other places used tipping bucket that is, the other can move, that is, work is completed here, Then move to other locations, or along the track, or loading wheels to move, as shown in the first figure: Crane lifting lift the different methods, to reduce lifting, while connecting the two at the same time at both ends of the rope , That is, one caret rises and the other one descends. Also, one end may weigh one hammer at one end, and the other end weighs at a minimum. However, it is not necessary to use a double bucket or a balanced hammer. Turn the hoist, and then a reel on the winch roll hoist roll down to carry out the operation. As for the principle of dumping dumping automatically, it is also not hard to understand that when the dumping dump refers to a certain location or is proposed outside the mine, there is a rail, a drum next to the dump and