Small concrete mixer can reach the destination more safely only when it runs smoothly. In the whole driving process, the driver needs to carefully look at the road, and must do a comprehensive inspection before driving. So what should we do if we run off course?

1、由于前轮定位中转向主销的后倾角过小，前轮居中位置和稳固性差。转向主销必须有肯定的后倾角，以使主销轴线与地面的交点位于轮胎与地面打仗点之前。当混凝土搅拌车转向轮在行驶中偶然偶尔受外力作用偏转时，由于车轮与地面打仗处前轮有一个作用力，此力对主销轴线构成一个力矩，其偏向恰好与前轮偏转偏向相反，故可使前轮自动回居中位置，以包管小型混凝土搅拌车稳固地沿直线行驶，因而称这个力矩为稳固力矩。

1. Because the caster angle of steering kingpin is too small in front wheel alignment, the center position and stability of front wheel are poor. The steering kingpin must have a certain caster angle so that the intersection of the kingpin axis and the ground is in front of the point of battle between the tire and the ground. When the steering wheel of the concrete mixer is occasionally deflected by external force during driving, because there is a force on the front wheel at the place where the wheel and the ground fight, this force forms a moment on the kingpin axis, and its deviation is just opposite to the deflection deviation of the front wheel. Therefore, the front wheel can automatically return to the center position to ensure that the small concrete mixer runs stably along a straight line To stabilize the moment.

2、主销后倾角愈力，主销轴线延伸与地面的交点前轮与地面打仗点之间的距离愈大，稳固力矩也愈大；反之，稳固力矩愈小。因此，当汽车出现行驶不稳和跑偏时，应查抄调解主销的后倾角，设法使其连结划定值。小型混凝土搅拌车两侧的轮胎和轮毂轴承紧度不划一，一侧的制动间隙过小，转向盘的游隙过大，也会引起汽车行驶跑偏，因此，还应过细对上部位举行查抄、调解或修。

2. The greater the caster angle of kingpin is, the greater the distance between the intersection point of kingpin axis and the ground and the battle point between the front wheel and the ground, the greater the stabilizing torque; otherwise, the smaller the stabilizing torque. Therefore, when the vehicle is unstable and deviated, it is necessary to check and adjust the caster angle of kingpin and try to make it connect with the specified value. The tightness of tires and hub bearings on both sides of small concrete mixer is not uniform. If the brake clearance on one side is too small and the clearance of steering wheel is too large, it will also lead to vehicle running deviation. Therefore, it is necessary to check, adjust or repair the upper parts.

在行驶小型混凝土搅拌车之前一定要做好检查，观察一下相应的位置是否正确，有无存在松动现象。平时也应该勤检查，及时进行修复。以上这些内容可以及时跑偏问题。

Before driving the small concrete mixer, it is necessary to check whether the corresponding position is correct and whether there is looseness. They should also be inspected frequently and repaired in time. The above contents can solve the problem of deviation in time.