1. The parking brake of the ordinary air brake of the self mixing concrete mixer can only be used when the truck is stationary, because its braking torque acts on the transmission shaft. If it is used in the driving of the small mixer, it is easy to cause serious overload of the transmission shaft and the rear axle, and the rotation direction of the left and right wheels may be opposite due to the locking of the differential housing, resulting in the deviation of the truck when braking Even a U-turn. But the energy storage spring braking is not the case. On the contrary, because the parking braking stroke of the energy storage spring is greater than the service braking stroke, in the case of insufficient service braking force, the energy storage spring can also be used for emergency braking. Therefore, the energy storage spring brake can not only be used as parking brake, but also as emergency brake. Therefore, compared with the ordinary air brake, the air break brake system is better in braking stability and safety.
           

2、自拌混凝土搅拌车油刹结构简单，安装空间小，只是需要刹车总泵、分泵、油杯及连接管路，不需要其他的附属设备;气刹就复杂多了，除了刹车总泵、分泵、刹车管路外，还有打气泵、储气筒、高压控制器、继动阀等部件，需要安装空间大，结构较复杂，而且为了确保，后刹车分泵现在都是断气刹车。

2. The oil brake of self mixing concrete mixer has simple structure and small installation space. It only needs brake master cylinder, sub pump, oil cup and connecting pipeline, and does not need other auxiliary equipment; The air brake is much more complicated. In addition to the brake master cylinder, sub cylinder and brake pipeline, there are also air pump, air reservoir, high-pressure controller, relay valve and other components, which need large installation space and complex structure. In addition, in order to ensure safety, the rear brake sub cylinder is now air brake.

3、常规刹车是手刹锁住传动轴，脚刹时由压缩空气进入制动气室锁住车轮。在手刹或传动轴机械故障时，手刹失灵;在气泵、管路、储气筒、制动阀任何一个部位故障时，脚刹失灵。而断气刹车就可有效避免这些危险

3. The conventional brake is that the hand brake locks the transmission shaft, and when the foot brake, the compressed air enters the brake chamber to lock the wheel. In case of mechanical failure of handbrake or transmission shaft, handbrake fails; in case of failure of any part of air pump, pipeline, air reservoir and brake valve, foot brake fails. The air brake can effectively avoid these dangers

4、断气刹制动气室内有个强 力弹簧，行车时压缩空气将弹簧顶起。手刹车就是把气放掉，让弹簧把刹车锁死。行车中气压过低时也会产生刹车效应，保证。

4. There is a strong spring in the brake chamber of the air break brake, which is pushed up by compressed air when driving. The handbrake is to let the air out and let the spring lock the brake. When the air pressure is too low in driving, it will produce braking effect to ensure safety.