The early damage of sliding bearing of concrete mixer is much more common than the burning of bearing, so it is very important to prevent the early damage of sliding bearing. The correct maintenance of sliding bearing is not only an effective way to reduce the early damage of bearing, but also a reliable guarantee to prolong the service life of bearing. Therefore, in the daily maintenance and repair of the engine, attention must be paid to the appearance shape of the alloy surface, back, end and edge corners of the bearing. If there are abnormalities or signs of excessive wear, it is necessary to carefully find out the causes and take corresponding measures to improve the working conditions of the bearing, Pay attention to the prevention of early damage of sliding bearing. Under the repeated action of cylinder pressure impact load, the surface layer of sliding bearing has plastic deformation and cold work hardening, locally loses its deformation ability, gradually forms stripes and continues to expand, and then forms pits on the loaded surface layer with the falling off of wear debris.

一般轴瓦发生穴蚀时，是先出现凹坑，然后这种凹坑逐步扩大并引起合金层界面的开裂，裂纹沿着界面的平行方向扩展，直到剥落为止。滑动轴承穴蚀的主要原因是，由于油槽和油孔等结构要素的横断面突然改变引起油流强烈紊乱，在油流紊乱的真空区形成气泡，随后由于压力升高，气泡溃灭而产生穴蚀。

Generally, when the bearing bush is pitted, the pit first appears, and then the pit gradually expands and causes the cracking of the alloy layer interface. The crack extends along the parallel direction of the interface until it peels off. The main reason for the cavitation of sliding bearing is that the sudden change of the cross section of structural elements such as oil groove and oil hole causes the strong disorder of oil flow, and bubbles are formed in the vacuum area with disordered oil flow, and then cavitation occurs due to the collapse of bubbles due to the increase of pressure.

穴蚀一般发生在轴承的高载区，如曲轴主轴承的下轴瓦上。轴承走外圆轴承走外圆就是轴承在座孔内有相对转动。轴承走外圆后，不仅影响轴承的散热，容易使轴承内表面合金烧蚀，而且还会使轴承背面损伤，严重时烧毁轴承。其主要原因是，轴承过短、凸榫损伤、加工或者安装不符合规范等。搅拌车,混凝土搅拌车,水泥搅拌车,搅拌车,水泥罐车任何质量等级的润滑油在使用过程中油质都会发生变化。到一定里程之后，性能恶化，会给发动机带来种种问题。为了避免故障的发生，应结合使用条件定期换油，并使油量适中。

Cavitation usually occurs in the high load area of the bearing, such as the lower bearing bush of the crankshaft main bearing. The outer circle of the bearing is the relative rotation of the bearing in the seat hole. After the bearing goes to the outer circle, it will not only affect the heat dissipation of the bearing, which is easy to ablate the alloy on the inner surface of the bearing, but also damage the back of the bearing, and burn the bearing in serious cases. The main reason is that the bearing is too short, the tenon is damaged, and the processing or installation does not meet the specifications. Mixer truck, concrete mixer truck, cement mixer truck, mixer truck price, any quality grade of lubricating oil of cement tank truck will change during use. After a certain mileage, the performance deteriorates, which will bring various problems to the engine. In order to avoid failure, the oil shall be changed regularly in combination with the service conditions, and the oil quantity shall be moderate.

机油从滤清器的细孔通过时把油中的固体颗粒和粘稠物积存在滤清器中。如滤清器堵塞，机油不能通过滤芯时，会胀破滤芯或打开阀，从旁通阀通过，仍把脏物带回润滑部位，促使发动机磨损，内部的污染加剧。混凝土搅拌车底盘。汽车底盘是混凝土搅拌车组成中成本、使用中维护费用的部分。混凝土搅拌车的汽车底盘，主要看该底盘的发动机功率和扭矩、油耗、轮胎、车架、驾驶舒适性及排放标准等方面，所以选择正规厂家生产的混凝土搅拌车以保证车辆在使用过程中，故障率低，维修成本低，损耗费用低。

When the oil passes through the fine hole of the filter, the solid particles and viscous substances in the oil accumulate in the filter. If the filter is blocked and the oil cannot pass through the filter element, the filter element will be broken or the safety valve will be opened to pass through the bypass valve, and the dirt will still be brought back to the lubrication part, causing engine wear and increasing internal pollution. Concrete mixer chassis. The automobile chassis is the most expensive part of the concrete mixer and the highest maintenance cost in use. The automobile chassis of concrete mixer truck mainly focuses on the engine power and torque, fuel consumption, tires, frame, driving comfort and emission standards of the chassis. Therefore, the concrete mixer truck produced by regular manufacturers is selected to ensure low failure rate, low maintenance cost and low loss cost during the use of the vehicle.

刹车失灵很容易造成车祸的发生，当您在驾驶混凝土搅拌车的过程中如果刹车失灵时请不要慌忙应该根据路况和车速控制好方向，脱开高速挡，同时迅速轰一脚空油，将高速挡换入低速挡。

Brake failure can easily lead to car accidents. When you drive a concrete mixer, if the brake fails, please don't panic. You should control the direction according to the road conditions and speed, disengage the high-speed gear, quickly blow a foot of empty oil, and shift the high-speed gear into the low-speed gear.

这样，发动机会有很大的牵引阻力使车速迅速降低。另外，在换低速挡的同时，应结合使用手刹，但要注意手刹不能拉紧不放，也不能拉得太慢。如果拉得太紧，容易使制动盘“抱死”，很可能损坏传动机件而丧失制动能力；如果拉得太慢，会使制动盘磨损烧蚀而失去制动作用。

In this way, the engine will have great traction resistance and reduce the speed rapidly. In addition, when shifting to low gear, the hand brake shall be used in combination, but it shall be noted that the hand brake shall not be tightened or pulled too slowly. If it is pulled too tightly, it is easy to "lock" the brake disc, which is likely to damage the transmission parts and lose the braking capacity; If it is pulled too slowly, the brake disc will be worn and ablated and lose the braking effect.