自上料搅拌车减速机的工作原理是将定量液压马达输出的转矩，通过减速机多级串联的行星齿轮传动机构平稳可靠地以一定转速传给搅拌筒。它具有结构紧凑、传动比大、输出扭矩大、功率密度高等优点。

The working principle of the reducer of the self loading mixer truck is to transmit the torque output by the quantitative hydraulic motor to the mixing drum stably and reliably at a certain speed through the planetary gear transmission mechanism of the reducer in multi-stage series. It has the advantages of compact structure, high power output and high density.

用放大液压马达输出扭矩、减少液压马达输出转速为搅拌筒提供所需的扭矩和转速，以满足混凝土在运输过程中搅拌的需求，减速机输出法兰盘与搅拌筒通过螺栓刚性连接，起着搅拌筒前端支撑作用并保持搅拌筒的安装角度，同时为清洗系统中的水泵提供动力。

Enlarge the output torque of the hydraulic motor and reduce the output speed of the hydraulic motor to provide the required torque and speed for the mixing drum, so as to meet the mixing demand of concrete during transportation. The output flange of the reducer is rigidly connected with the mixing drum through bolts, which plays the role of supporting the front end of the mixing drum, maintains the installation angle of the mixing drum, and provides power for the water pump in the cleaning system.

减速机顶端配备有清洗系统，其主要功能搅拌筒的清洗，有时也用于运输过程中的干料搅拌，同时也对液压系统起着冷却作用。

The top of the reducer is equipped with a cleaning system, which is mainly used to clean the mixing drum. Sometimes it is also used for dry material mixing during transportation, and also plays a cooling role for the hydraulic system.

法兰盘是直接受力部件，在搅拌车行驶过程中，加上道路上的颠簸会对减速机造成巨大的冲击。为了这个问题，搅拌车用减速机都有一个特定角度的调心摆动机构，设计极限角度为4°，该机构能够实现与罐体摆动调心连接。实现摆动的零部件为法兰盘大轴承和鼓形齿。

The flange is a direct force bearing part. During the driving process of the mixer truck, coupled with the bumps on the road, it will have a huge impact on the reducer. In order to solve this problem, the reducer for mixer truck has a centering swing mechanism with a specific angle, and the design limit angle is 4 °. This mechanism can realize the centering connection with the swing of tank body. The parts to realize swing are flange, large bearing and drum tooth.

自上料搅拌车减速机输出端的轴承为特制的调心滚子轴承，在标准件调心滚子轴承的基础上进行了改进，外圈滚道为球面形，故其调心性能良好，能补偿同轴度误差，特别适用于重载或振动载荷下工作，设计时加宽了球面形的外圈滚道，增大了轴承抗冲击载荷的能力。

The bearing at the output end of the reducer of the self loading mixer truck is a special self-aligning roller bearing. It is improved on the basis of the standard self-aligning roller bearing. The outer race raceway is spherical, so it has good self-aligning performance and can compensate the coaxiality error. It is especially suitable for working under heavy load or vibration load. During the design, the spherical outer race raceway is widened to increase the ability of the bearing to resist impact load.

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