（一）水泥自动搅拌车搅拌筒停转的处理
（1） Treatment of mixing drum stop running of concrete mixer truck
检查搅拌筒托轮以及马达，看是否是有土石杂物卡住，如果有，将杂物清理干净即可。如果不是由于杂物卡住无法转动，立刻呼叫救援车。在有条件排放混凝土的情况下，可以将马达上的高压软管的管接头卸下，旋转搅拌筒，让搅拌筒检修孔向下，将混凝土从检修孔排出。
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.
救援车到场后，将故障车马达上的高压软管卸下，接上救援用高压软管，另一端接在救援车油泵上，同时把应急用的回油管连接在故障车马达泄油口位置，另一端连接在救援车油泵回油口，利用救援车对故障车的小型水泥自动搅拌车进行控制旋转，直混凝土排出。如有条件的情况下，可以直接更换出现故障的马达，更换马达后接好各个油管，搅拌筒即可正常旋转。
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）水泥自动搅拌车搅拌筒的构造和工作原理
（2） Structure and working principle of mixing drum of concrete mixer truck
小型水泥自动搅拌车搅拌筒绝大部分都采用梨型结构，搅拌筒通过支承装置斜卧在机架上，可以绕其轴线转动，搅拌筒的后上方只有一个筒口分别通过进出料装置进行装料或卸料。整个搅拌筒的壳体是一个变截面而不对称的双锥体，外形似梨型，底段锥体较短，端面封闭并焊接着法兰，通过连接法兰用螺栓与减速器联结。
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.
上段锥体的过度部分有一条环行滚道，它焊接在垂直于搅拌筒轴线的平面圆周上，整个搅拌筒通过连接法兰和环形滚道倾斜卧置在固定与机架上的减速器壳体和一对支承滚轮所组成的三点支承结构上，由减速器带动平稳的绕其轴线转动。在搅拌筒滚道圆周上部，通常设有钢带护绕，以限制搅拌筒在水泥自动搅拌车颠波行驶时向上跳动。
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.
小型水泥自动搅拌车搅拌筒的内部结构，它与双锥形和梨形搅拌机的内部结构都不同，这是为了适应在单一筒口不倾翻反转卸料和进料搅拌的工艺要求而设计的。搅拌筒从筒口到筒底沿内壁对称焊接着两条连续的带状螺旋叶片，当搅拌筒转动时，两条叶片既被带动作围绕搅拌筒轴线的螺旋运动，这是搅拌筒对混凝土进行搅拌或卸料的根本装置。另外，为了加强搅拌效果，在搅拌筒的中下部两条螺旋叶片间加装有辅助搅拌叶片。
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.
在小型水泥自动搅拌车搅拌筒的筒口部位，沿两条螺旋叶片的内边缘焊接一段进料导管。进料导管与筒壁以同心圆形式分隔为内外两部份，部分的导管为进料口，混凝土由此装入搅拌筒，导管与筒壁形成的环形空间为出料口，从出料口的端面看它被两条螺旋叶片分割成两半，卸料时，混凝土在叶片反向螺旋运动的顶推下，从此流出。
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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