The models that B2 driver's license can drive are heavy and medium-sized trucks or large, heavy and medium-sized special operation vehicles. Most of the heavy and medium-sized trucks are mainly trucks. For example, the large trucks that we often see on the road are heavy trucks. Large, heavy and medium-sized special operation vehicles refer to vehicles equipped with special equipment or appliances, such as sprinkler, concrete mixer, fire truck, etc.

混凝土搅拌机是用来运送建筑用混凝土的专用卡车，由于它的外形，也常被称为田螺车。这类卡车上都装置圆筒型的搅拌筒以运载混合后的混凝土。

Concrete mixer is a special truck used to transport construction concrete. Because of its shape, it is often called snail truck. Such trucks are equipped with cylindrical mixing drums to carry the mixed concrete.

它主要由搅拌筒及其辅助支撑部件组成，搅拌筒是混凝土的装载容器，它是由耐磨薄钢板制成，为了能够自动装、卸混凝土，其内壁焊有特殊形状的螺旋叶片。

It is mainly composed of mixing drum and its auxiliary supporting parts. The mixing drum is a concrete loading container. It is made of high-quality wear-resistant steel sheet. In order to automatically load and unload concrete, its inner wall is welded with spiral blades of special shape.

自动上料搅拌机驾驶员岗位职责：

Post responsibilities of automatic feeding mixer driver:

1、熟悉水泥搅拌车性能，必须持证上岗，岗前禁止喝酒，酒后禁止上岗，以确保行车；

1. Be familiar with the performance of cement mixer truck and must work with certificate. It is forbidden to drink before work and after drinking, so as to ensure driving safety;

2、每工作班前检查车内仪表，油料是否正常、充足，刹车是否良好，混凝土罐车是否保持干净，是否有存水未放完等，严禁带病出车；

2. Before each work shift, check the instruments in the vehicle, whether the oil is normal and sufficient, whether the brake is good, whether the concrete tank truck is kept clean, whether there is water storage, etc. it is strictly prohibited to leave the vehicle with disease;

3、运输前，应检查混凝土罐车密封性，运输过程中，车辆应匀速行驶，车辆拐弯时，应提前减速，从盘装料开始开始卸料为止宜控制在一个小时内；

3. Before transportation, the tightness of the concrete tanker shall be checked. During transportation, the vehicle shall drive at a uniform speed. When the vehicle turns, it shall slow down in advance. It should be controlled within one hour from the beginning of the first batch of loading to the beginning of unloading;

4、严格按照行车路线行车，保证行车；

4. Drive in strict accordance with the driving route to ensure driving safety;

5、出站时注意左右来车，运送中遵守交通规则，运到浇注地点应服从指挥，停留位置恰当，稳妥，能够满足施工需求，到达工地后，禁止停车熄火；

5. When leaving the station, pay attention to the vehicles coming from the left and right, abide by the traffic rules during transportation, obey the command when transporting to the pouring site, stay in an appropriate and stable position, and can meet the construction needs. After arriving at the construction site, it is forbidden to stop and turn off the engine;

6、服从站内调度人员，现场服务人员的调度。

6. Obey the dispatching of station dispatcher and field service personnel.