（一）水泥自動攪拌車攪拌筒停轉(zhuǎn)的處理
（1） Treatment of mixing drum stop running of concrete mixer truck
檢查攪拌筒托輪以及馬達(dá)，看是否是有土石雜物卡住，如果有，將雜物清理干凈即可。如果不是由于雜物卡住無法轉(zhuǎn)動，立刻呼叫救援車。在有條件排放混凝土的情況下，可以將馬達(dá)上的高壓軟管的管接頭卸下，旋轉(zhuǎn)攪拌筒，讓攪拌筒檢修孔向下，將混凝土從檢修孔排出。
Check the supporting wheel and motor of the mixing drum to see if there is any debris stuck. If so, clean up the debris. If it is not due to debris stuck, call the rescue vehicle immediately. Under the condition that concrete can be discharged, the pipe joint of the high-pressure hose on the motor can be removed, and the mixing drum can be rotated to let the access hole of the mixing cylinder go down to discharge the concrete from the manhole.
救援車到場后，將故障車馬達(dá)上的高壓軟管卸下，接上救援用高壓軟管，另一端接在救援車油泵上，同時把應(yīng)急用的回油管連接在故障車馬達(dá)泄油口位置，另一端連接在救援車油泵回油口，利用救援車對故障車的小型水泥自動攪拌車進(jìn)行控制旋轉(zhuǎn)，直混凝土排出。如有條件的情況下，可以直接更換出現(xiàn)故障的馬達(dá)，更換馬達(dá)后接好各個油管，攪拌筒即可正常旋轉(zhuǎn)。
At the same time, connect one end of the failure pump to the rescue truck, connect the other end of the failure pump to the lower end of the truck, and then connect the hose to the lower end of the truck to the rescue truck. If conditions permit, the motor that fails can be replaced directly. After the motor is replaced, each oil pipe is connected, and the mixing drum can rotate normally.
（二）水泥自動攪拌車攪拌筒的構(gòu)造和工作原理
（2） Structure and working principle of mixing drum of concrete mixer truck
小型水泥自動攪拌車攪拌筒絕大部分都采用梨型結(jié)構(gòu)，攪拌筒通過支承裝置斜臥在機架上，可以繞其軸線轉(zhuǎn)動，攪拌筒的后上方只有一個筒口分別通過進(jìn)出料裝置進(jìn)行裝料或卸料。整個攪拌筒的殼體是一個變截面而不對稱的雙錐體，外形似梨型，底段錐體較短，端面封閉并焊接著法蘭，通過連接法蘭用螺栓與減速器聯(lián)結(jié)。
Most of the mixing cylinders of the small concrete mixer truck are pear shaped. The mixing drum is inclined on the frame through the supporting device and can rotate around its axis. There is only one opening at the upper rear of the mixing drum to load or discharge materials respectively through the feeding and discharging device. The shell of the mixing drum is a variable cross-section and unsymmetrical double cone, the shape is pear shaped, the bottom cone is short, the end face is closed and welded with flange, and the reducer is connected with bolts through the connecting flange.
上段錐體的過度部分有一條環(huán)行滾道，它焊接在垂直于攪拌筒軸線的平面圓周上，整個攪拌筒通過連接法蘭和環(huán)形滾道傾斜臥置在固定與機架上的減速器殼體和一對支承滾輪所組成的三點支承結(jié)構(gòu)上，由減速器帶動平穩(wěn)的繞其軸線轉(zhuǎn)動。在攪拌筒滾道圓周上部，通常設(shè)有鋼帶護(hù)繞，以限制攪拌筒在水泥自動攪拌車顛波行駛時向上跳動。
The transition part of the upper cone has a circular raceway, which is welded on the plane circumference perpendicular to the axis of the mixing drum. The whole mixing drum is inclined to lie on the three-point support structure composed of the reducer shell fixed on the frame and a pair of supporting rollers through the connecting flange and the annular raceway, and the reducer drives the smooth rotation around its axis. In the upper part of the circumference of the mixing drum raceway, there is usually a steel belt wrapping to limit the upward jump of the mixing drum when the concrete mixer truck is running in a bumpy wave.
小型水泥自動攪拌車攪拌筒的內(nèi)部結(jié)構(gòu)，它與雙錐形和梨形攪拌機的內(nèi)部結(jié)構(gòu)都不同，這是為了適應(yīng)在單一筒口不傾翻反轉(zhuǎn)卸料和進(jìn)料攪拌的工藝要求而設(shè)計的。攪拌筒從筒口到筒底沿內(nèi)壁對稱焊接著兩條連續(xù)的帶狀螺旋葉片，當(dāng)攪拌筒轉(zhuǎn)動時，兩條葉片既被帶動作圍繞攪拌筒軸線的螺旋運動，這是攪拌筒對混凝土進(jìn)行攪拌或卸料的根本裝置。另外，為了加強攪拌效果，在攪拌筒的中下部兩條螺旋葉片間加裝有輔助攪拌葉片。
The internal structure of mixing drum of small concrete mixer truck is different from that of double cone mixer and pear shaped mixer, which is designed to meet the process requirements of unloading and feeding mixing without tilting and reversing at a single cylinder mouth. Two continuous ribbon spiral blades are symmetrically welded along the inner wall from the barrel mouth to the bottom of the mixing drum. When the mixing drum rotates, the two blades are driven to move around the axis of the mixing drum, which is the fundamental device for mixing or discharging concrete. In addition, in order to enhance the mixing effect, an auxiliary mixing blade is installed between the two spiral blades in the middle and lower part of the mixing cylinder.
在小型水泥自動攪拌車攪拌筒的筒口部位，沿兩條螺旋葉片的內(nèi)邊緣焊接一段進(jìn)料導(dǎo)管。進(jìn)料導(dǎo)管與筒壁以同心圓形式分隔為內(nèi)外兩部份，部分的導(dǎo)管為進(jìn)料口，混凝土由此裝入攪拌筒，導(dǎo)管與筒壁形成的環(huán)形空間為出料口，從出料口的端面看它被兩條螺旋葉片分割成兩半，卸料時，混凝土在葉片反向螺旋運動的頂推下，從此流出。
A section of feeding pipe is welded along the inner edge of two spiral blades at the mouth of mixing drum of small concrete mixer truck. The feeding duct and the cylinder wall are separated into two parts in the form of concentric circles. The central part of the conduit is the feeding port. The concrete is loaded into the mixing drum. The annular space formed by the conduit and the wall is the discharge port. Seen from the end face of the discharge port, it is divided into two parts by two spiral blades. When discharging, the concrete flows out from here under the pushing of the reverse spiral movement of the blades.
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