At present, the concrete mixer is mostly automatic feeding, there are two common feeding methods, tipping feeding and climbing bucket feeding. This paper makes a comparative analysis of the two feeding methods.

一、提升倾翻式上料方式：

1、 Lifting and tipping feeding mode:

1.工作原理工作时，在钢丝绳的牵引下，上料斗通过前后两对滚轮分别沿上料架内外导轨爬行升起。当前滚轮运行到内导轨止点，料斗便以前滚轮为支点向上倾翻，物料通过料斗嘴口逐渐进入拌筒，当倾翻到料斗地面与水平线呈55°夹角时，料斗将受到限位装置的控制而停止运动，物料全部进入拌筒。上料斗下落时，由钢丝绳的松动使料斗反向运动恢复原位。

1. Working principle: under the traction of wire rope, the upper hopper crawls along the inner and outer guide rails of the feeding frame through two pairs of rollers. When the current roller moves to the stop of the inner guide rail, the hopper tilts upward with the former roller as the fulcrum, and the material gradually enters the mixing drum through the hopper mouth. When it tilts to the hopper ground, it is 55 degrees away from the horizontal line ° When the angle is set, the hopper will stop moving under the control of the limiting device, and all materials will enter the mixing drum. When the upper hopper falls down, the loosening of the steel wire rope makes the hopper move backward and return to its original position.

2.优点①工作比较直观，便于操作和观察。②当发生故障时很容易判明原因，及时进行维修。③上料装置与拌筒部件为同一动力集中驱动，使整机总功率降低。

Advantages: (1) the work is intuitive and easy to operate and observe. ② When a fault occurs, it is easy to identify the cause and repair it in time. ③ The feeding device and the mixing drum are driven by the same power, which reduces the total power of the whole machine.

3.应用机型采用提升倾翻式上料的混凝土搅拌机主要有JZM系列摩擦滚筒式混凝土搅拌机、JZC350B/500滚筒式混凝土搅拌机，工程用混凝土搅拌机中也有JDC系列提升强制式混凝土搅拌机。

3. The concrete mixers with lifting and tipping feeding are mainly JZM series friction drum concrete mixers, JZC350B / 500 drum concrete mixers, and JDC series forced lifting concrete mixers are also used in engineering concrete mixers.

二、提升爬斗式上料方式：

2、 Lifting bucket feeding mode:

1.工作原理提升投料时，提升传动机构带动钢丝绳通过滑轮牵引料斗沿上料架导轨向上爬行，当料斗被提升到投料位置时，斗底前滚轮进入水平岔道，而斗体继续上升，迫使斗底与斗体已铰轴为支点分离从而打开料门。随着斗体的上升，料门逐渐开大，斗体内的物料经中间接料斗不断投入拌筒。

1. Working principle when lifting and feeding, the lifting transmission mechanism drives the steel wire rope to pull the hopper upward along the guide rail of the feeding frame through the pulley. When the hopper is lifted to the feeding position, the front roller at the bottom of the hopper enters the horizontal fork, and the bucket body continues to rise, forcing the bottom of the hopper and the bucket body to separate as a pivot, thus opening the material door. With the rising of the bucket body, the material door is gradually opened, and the materials in the bucket body are continuously put into the mixing drum through the intermediate hopper.

2.优点①料斗重 心位置合理，运行中无倾翻力矩，整机工作稳定可靠。②运行中料斗不溢料，灰尘较小。

2. Advantages: (1) the position of hopper center of gravity is reasonable, there is no tipping moment in operation, and the whole machine works stably and reliably. ② During operation, the hopper does not overflow and the dust is small.

3.应用JZC300/350A爬斗滚筒式混凝土搅拌机，JZC350柴油机滚筒式混凝土搅拌机。

3. Jzc300 / 350A climbing bucket drum concrete mixer and JZC350 diesel engine drum concrete mixer are applied.