Reducer is an important part of concrete mixer truck. What role does reducer play in mixer truck? When you know the working principle of the concrete mixer, you can understand the function of the reducer. The working principle of the mixer is to take out the power of the special vehicle chassis through the power take-off device, drive the variable pump of the hydraulic system, convert the mechanical energy into hydraulic energy and transmit it to the quantitative motor. The motor then drives the reducer, and the reducer drives the mixing device to mix the concrete.

1、漏油： 轴封漏油，轴封漏油多是由于使用不当造成减速机划伤或减速机输出轴划伤及异物缠绕所致。此时需要更换轴封或者是更换油封，在减速机的使用过程中要及时清理油封 处异物。

1. Oil leakage: the shaft seal leaks oil. The oil leakage of the shaft seal is mostly caused by the scratch of the reducer or the scratch of the output shaft of the reducer and the winding of foreign matters caused by improper use. At this time, the shaft seal or oil seal needs to be replaced. During the use of the reducer, the foreign matters at the oil seal shall be cleaned in time.

端盖与壳体连接处漏油，这种形式的漏油多是由于减速机连接螺栓松动造成的，此时需要及时的复紧端盖和壳体连接螺栓或者更换减速机，或者是更换减速机端 盖和壳体间的O型圈。为避免此类情况再发生，平时要定期的检查螺栓扭力。

There is oil leakage at the connection between the end cover and the housing. This form of oil leakage is mostly caused by the loose connecting bolts of the reducer. At this time, it is necessary to re tighten the connecting bolts of the end cover and the housing in time, or replace the reducer, or replace the O-ring between the end cover and the housing of the reducer. In order to avoid this kind of situation, the bolt torque shall be checked regularly at ordinary times.

马达和减速机连接处漏油，这主要是因为马达和减速机在安装的时候对O型圈的密封不达标。此时需要更换马达和减速机连接处的O型圈，检查马达和减速机安装表面是否 有划伤。在搅拌车的平时使用过程中注意检查马达和减速机安装的螺栓是否有松动。

There is oil leakage at the connection between motor and reducer, which is mainly because the O-ring seal of motor and reducer is not up to standard during installation. At this time, it is necessary to replace the O-ring at the connection between the motor and reducer and check whether the mounting surface of the motor and reducer is scratched. During the normal use of the mixer truck, pay attention to check whether the bolts installed on the motor and reducer are loose.

2、异响 在水泥搅拌车的使用过程中减速机如果出现异响，要做一下检查：查看减速机内是否有齿轮油；在油位观察窗处检查油位是否正常；放出少量油液看是否有发黑变质并校对保 养时间；检查减速机是否受到过外力的冲击。如果放油发现有大量铁屑，那就是减速机内部已经损坏，须更换减速机，平时要定期的对减速机做保养。

2. Abnormal noise during the use of cement mixer truck, if the reducer makes abnormal noise, check it: check whether there is gear oil in the reducer; Check whether the oil level is normal at the oil level observation window; Drain a small amount of oil to see if there is blackening and deterioration, and check the maintenance time; Check whether the reducer has been impacted by external force. If a large amount of iron filings is found in the oil drain, the reducer has been damaged. The reducer must be replaced. The reducer should be maintained regularly at ordinary times.

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