In the practical process of concrete mixer, bad working environment and extensive operation and maintenance will cause accelerated wear of spare parts. In this paper, the vulnerable parts of concrete mixer are summarized

叶片、衬板

Blade and liner

铸件，耐磨件。因搅拌机长期使用，搅拌混凝土造成的磨损。平均5-10万方更换一次。

Casting, wear parts. The mixer is used for a long time. The average replacement time is 50000-100000 cubic meters.

钢丝绳

a wire rope

多因搅拌机工作时，钢丝绳磨到龙门架造成的磨损，正常情况下6-9个月换一次，但若平时不注意，磨到钢丝绳后，未处理，也出现过1个月就要更换的情况。

Due to the wear caused by the steel wire rope grinding to the gantry frame when the mixer is working, it should be replaced every 6-9 months under normal circumstances. However, if you do not pay attention to it at ordinary times, the wire rope will not be treated after grinding, and it will be replaced after 1 month.

行程开关/限位开关

Travel switch / limit switch

电器元件，用于上下料斗，开关闸门。电器元件这种东西大家都明白，有时候几年都不坏，有时候短时间换几个。正常情况下，一年内不坏问题不大。

Electrical components, used for up and down hopper, opening and closing gate. We all know that electrical components are not broken for several years, and sometimes they are replaced in a short time. Under normal circumstances, it's not bad for a year.

料斗滑轮

Hopper pulley

铸件，耐磨件。长时间负载滚动，在轨道上来回滚动，造成磨损。需要注意的是，此处滑轮只要用肉眼能明显观察出来磨损了，就必须进行更换。因为只要磨损一部分，就会导致料斗上下爬行出现震动，对轨道造成损害，甚导致轨道变形。

Casting, wear parts. Long time load rolling, rolling back and forth on the track, causing wear. It should be noted that the pulley must be replaced as long as it is obviously worn by naked eyes. As long as a part of the wear, the hopper will crawl up and down, causing vibration, damage to the track, and even lead to track deformation.

电机

electric machinery

混凝土搅拌机因减速机卡死，导致的电机烧坏。或者因电流、电压不稳；接线出错等原因导致的电机烧坏。

The motor of the concrete mixer is burnt out due to the blocking of the reducer. Or because of the current, voltage instability; wiring error and other reasons caused by the motor burn out.