However, for many users, the understanding of small concrete mixer is only one-sided. There is no way to distinguish the "good or bad" of a small concrete mixer, but only through the simplest price problem.

首先小型混凝土攪拌車的整體外觀尺寸應該符合國家標準的規定，攪拌車上裝質量不得超過底盤的載重總值，罐體焊縫應做到均勻、光滑平直，無漏焊、夾渣、裂紋、包砂等現象，上裝整體做好防銹處理。

Firstly, the overall appearance dimension of the small concrete mixer truck shall comply with the provisions of national standards. The loading quality of the mixer truck shall not exceed the total load value of the chassis. The tank weld shall be uniform, smooth and straight without missing welding, slag inclusion, crack, sand wrapping and other phenomena. The overall loading shall be subject to anti rust treatment.

然后要看上裝攪拌罐的進出料口要符合標準，罐體內部螺旋設計合理，使經過運輸的能混凝土能達到標準使用要求，整體密封性能良好，各部件密封接口及液壓油管接口不得有滲油漏氣等現象出現。上裝部分和底盤連接安裝牢固，卸料速度不低于0.7m³/min，卸料殘余率小于2%，進料速度不小于2.7m³/min。

Then, it should be noted that the inlet and outlet of the mixing tank should meet the standards, the internal screw design of the tank body should be reasonable, so that the transported concrete can meet the standard use requirements, the overall sealing performance is good, and the sealing interfaces of various components and hydraulic oil pipe interfaces should be free of oil and air leakage. The upper part shall be firmly connected with the chassis, and the unloading speed shall not be less than 0.7m ³/ Min, the unloading residual rate is less than 2%, and the feeding speed is not less than 2.7m ³/ min。

那么減速機在長時間的工作使用后，難免會出現一些小的故障問題?；旧献畛Ｒ姷姆譃槁┯秃统霈F異響兩類問題。

Then, after the reducer is used for a long time, some small faults will inevitably occur. Basically, the most common problems are oil leakage and abnormal noise.

首選是漏油的問題，我們要根據不同的漏油位置，來處理問題:1、油封處漏油，這種情況最容易造成的就是異物劃傷或纏繞所致，排除異物并更換油封；2、端蓋和殼體處漏油，這個地方漏油多是端蓋緊固螺絲松動造成，檢查并上緊螺絲一般就可解決；3、與液壓馬達連接處漏油，此時應檢查連接處O型圈是否完好，同時檢查固定螺絲是否松動。

The first choice is oil leakage. We should deal with the problem according to different oil leakage positions: 1. Oil leakage at the oil seal. This situation is most likely caused by foreign matter scratch or winding. Remove foreign matters and replace the oil seal; 2. The oil leakage at the end cover and shell is mostly caused by the loose fastening screws of the end cover. Generally, it can be solved by checking and tightening the screws; 3. If there is oil leakage at the connection with the hydraulic motor, check whether the O-ring at the connection is intact and whether the fixing screw is loose.

減速機異響我們首先要檢查齒輪油是否正常，齒輪油缺少或雜質過多，應及時更換齒輪油；重車的時候才出現異響，檢查罐體拖輪和跑帶是否磨損嚴重，如果出現磨損嚴重，就會造成載重的時候罐體角度過大使減速機出現異響；出現異響并且車身抖動，多是由液壓系統問題造成，檢查液壓油是否出現問題，如未發現異常就需要檢查油泵和液壓馬達。

If the reducer makes abnormal noise, we should first check whether the gear oil is normal. If the gear oil is missing or there are too many impurities, we should replace the gear oil in time; The abnormal noise only occurs when the vehicle is loaded. Check whether the tank tug and running belt are seriously worn. If the wear is serious, the tank angle will be too large when the load is loaded, and the reducer will make abnormal noise; Abnormal noise and body shaking are mostly caused by hydraulic system problems. Check whether there is a problem with the hydraulic oil. If no abnormality is found, check the oil pump and hydraulic motor.

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