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.

一般軸瓦發(fā)生穴蝕時(shí)，是先出現(xiàn)凹坑，然后這種凹坑逐步擴(kuò)大并引起合金層界面的開(kāi)裂，裂紋沿著界面的平行方向擴(kuò)展，直到剝落為止。滑動(dòng)軸承穴蝕的主要原因是，由于油槽和油孔等結(jié)構(gòu)要素的橫斷面突然改變引起油流強(qiáng)烈紊亂，在油流紊亂的真空區(qū)形成氣泡，隨后由于壓力升高，氣泡潰滅而產(chǎn)生穴蝕。

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.

穴蝕一般發(fā)生在軸承的高載區(qū)，如曲軸主軸承的下軸瓦上。軸承走外圓軸承走外圓就是軸承在座孔內(nèi)有相對(duì)轉(zhuǎn)動(dòng)。軸承走外圓后，不僅影響軸承的散熱，容易使軸承內(nèi)表面合金燒蝕，而且還會(huì)使軸承背面損傷，嚴(yán)重時(shí)燒毀軸承。其主要原因是，軸承過(guò)短、凸榫損傷、加工或者安裝不符合規(guī)范等。攪拌車(chē),混凝土攪拌車(chē),水泥攪拌車(chē),攪拌車(chē)價(jià)格,水泥罐車(chē)任何質(zhì)量等級(jí)的潤(rùn)滑油在使用過(guò)程中油質(zhì)都會(huì)發(fā)生變化。到一定里程之后，性能惡化，會(huì)給發(fā)動(dòng)機(jī)帶來(lái)種種問(wèn)題。為了避免故障的發(fā)生，應(yīng)結(jié)合使用條件定期換油，并使油量適中。

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.

機(jī)油從濾清器的細(xì)孔通過(guò)時(shí)把油中的固體顆粒和粘稠物積存在濾清器中。如濾清器堵塞，機(jī)油不能通過(guò)濾芯時(shí)，會(huì)脹破濾芯或打開(kāi)安全閥，從旁通閥通過(guò)，仍把臟物帶回潤(rùn)滑部位，促使發(fā)動(dòng)機(jī)磨損，內(nèi)部的污染加劇。混凝土攪拌車(chē)底盤(pán)。汽車(chē)底盤(pán)是混凝土攪拌車(chē)組成中成本、使用中維護(hù)費(fèi)用的部分。混凝土攪拌車(chē)的汽車(chē)底盤(pán)，主要看該底盤(pán)的發(fā)動(dòng)機(jī)功率和扭矩、油耗、輪胎、車(chē)架、駕駛舒適性及排放標(biāo)準(zhǔn)等方面，所以選擇正規(guī)廠家生產(chǎn)的混凝土攪拌車(chē)以保證車(chē)輛在使用過(guò)程中，故障率低，維修成本低，損耗費(fèi)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.

剎車(chē)失靈很容易造成車(chē)禍的發(fā)生，當(dāng)您在駕駛混凝土攪拌車(chē)的過(guò)程中如果剎車(chē)失靈時(shí)請(qǐng)不要慌忙應(yīng)該根據(jù)路況和車(chē)速控制好方向，脫開(kāi)高速擋，同時(shí)迅速轟一腳空油，將高速擋換入低速擋。

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.

這樣，發(fā)動(dòng)機(jī)會(huì)有很大的牽引阻力使車(chē)速迅速降低。另外，在換低速擋的同時(shí)，應(yīng)結(jié)合使用手剎，但要注意手剎不能拉緊不放，也不能拉得太慢。如果拉得太緊，容易使制動(dòng)盤(pán)“抱死”，很可能損壞傳動(dòng)機(jī)件而喪失制動(dòng)能力；如果拉得太慢，會(huì)使制動(dòng)盤(pán)磨損燒蝕而失去制動(dòng)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.