1. Explanation on oil leakage of reducer of concrete mixer

(1)在封閉的減速機(jī)箱內(nèi)，每一對(duì)齒輪相嚙合及齒輪浸入油中攪油都發(fā)生熱量。跟著運(yùn)轉(zhuǎn)時(shí)間的持久，使減速箱內(nèi)溫度逐增加，箱體內(nèi)潤滑油經(jīng)飛濺，灑在減速機(jī)箱體內(nèi)壁，因潤滑油的粘度隨溫度升高而低落，油的滲透性更強(qiáng)，在箱內(nèi)壓力浸箱面或軸伸密封不嚴(yán)處滲漏。

(1) In the closed reduction case, heat is generated when each pair of gears mesh and the gears are immersed in oil. With the lasting operation time, the temperature in the reduction box increases gradually. The lubricating oil in the box is splashed and sprinkled on the inner wall of the reduction box. Because the viscosity of the lubricating oil decreases with the increase of temperature, the oil permeability is stronger, and it leaks at the pressure immersed box surface in the box or the shaft extension seal is not tight.

(2減速機(jī)結(jié)構(gòu)不公道引起漏油。如設(shè)計(jì)的減速機(jī)沒有通風(fēng)罩或通風(fēng)罩太小，減速機(jī)無法實(shí)現(xiàn)均壓，也會(huì)造成箱內(nèi)壓力升高

(2) the unreasonable structure of the reducer causes oil leakage. If the designed reducer does not have a ventilation hood or the ventilation hood is too small, the reducer cannot achieve pressure equalization, and the pressure in the box will also rise

(3)減速機(jī)事情情況惡劣引起漏油。如情況多塵造成通風(fēng)罩通風(fēng)結(jié)果差，不能實(shí)現(xiàn)均壓，高溫及有害介質(zhì)，使密封件老

(3) The reducer is in bad condition, causing oil leakage. If the ventilation result of the ventilation hood is poor due to too much dust, pressure equalization cannot be realized, high temperature and harmful media will make the seal old

(4)裝配質(zhì)量達(dá)不到要求，在維修安裝減速機(jī)封蓋時(shí)團(tuán)結(jié)面密封欠好，也會(huì)呈現(xiàn)漏油現(xiàn)象。

(4) If the assembly quality fails to meet the requirements, the sealing of the unity surface is not good when repairing and installing the reducer cover, which will also show oil leakage.

2、防備混凝土攪拌車減速機(jī)漏油的法子

2. Ways to prevent oil leakage of reducer of concrete mixer truck

(1)均壓。減速機(jī)漏油主要是由于減速機(jī)箱內(nèi)壓力增加所引起，因此減速機(jī)應(yīng)設(shè)有相應(yīng)的通風(fēng)罩，以實(shí)現(xiàn)箱內(nèi)和箱外壓力

(1) Equalizing. The oil leakage of the reducer is mainly caused by the increase of pressure in the reducer box. Therefore, the reducer shall be equipped with corresponding ventilation hood to realize the pressure inside and outside the box

速機(jī)較量大，通風(fēng)罩不能太小。通風(fēng)罩巨細(xì)的輕便查抄要領(lǐng)是：打開通風(fēng)罩上蓋，減速機(jī)以高速持續(xù)運(yùn)轉(zhuǎn)幾分鐘之后，用壓差較大時(shí)，說明通罩小，則應(yīng)改換通風(fēng)罩，確保均壓。對(duì)在惡劣情況事情的減速機(jī)應(yīng)經(jīng)常查抄通風(fēng)罩的通風(fēng)結(jié)果，發(fā)明

There is a big competition between speed machines, and the ventilation hood should not be too small. The key points of light inspection of the size of the ventilation hood are: open the upper cover of the ventilation hood, and after the reducer runs continuously at high speed for several minutes, if the pressure difference is large, it indicates that the ventilation hood is small, then the ventilation hood should be replaced to ensure pressure equalization. Check the ventilation results of the ventilation hood frequently for the reducer in bad conditions

(2)導(dǎo)流。減速機(jī)在高速運(yùn)轉(zhuǎn)時(shí)，由于齒輪浸在油池中，在旋轉(zhuǎn)時(shí)將油帶起飛濺到箱體內(nèi)壁，要使飛濺到箱體內(nèi)壁的油盡及軸頭密封處存留，以防油逐漸沿上下箱體之間及軸頭浸出來?？稍跍p速機(jī)上下箱體團(tuán)結(jié)面處開回油槽，在軸頭設(shè)計(jì)出油軸頭處粘一半圓槽，使濺到上蓋的油順半圓槽兩頭流到下箱中，使飛濺到箱體上的油不會(huì)漏出。

(2) Diversion. When the reducer is running at high speed, because the gear is immersed in the oil pool, the oil belt will take off and splash on the inner wall of the box during rotation. The oil splashed on the inner wall of the box and the seal of the shaft head shall be retained to prevent the oil from gradually soaking out between the upper and lower boxes and the shaft head. The oil return groove can be opened at the joint surface of the upper and lower boxes of the reducer, and the oil is designed at the shaft head. The half round groove is stuck at the shaft head to make the oil splashed on the upper cover flow into the lower box along the two ends of the half round groove, so that the oil splashed on the box will not leak out.

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