目前市面上常見(jiàn)的輕量化攪拌機(jī)的后橋都分為153后橋和457后橋，來(lái)說(shuō)說(shuō)這兩種后橋的區(qū)別。

　　At present, the common rear axle of lightweight mixer truck is divided into 153 rear axle and 457 rear axle.

　　457后橋標(biāo)載13噸，457橋加大了軸承，承載量還是一樣的，沒(méi)什么大的變化。按參數(shù)說(shuō)153是東風(fēng)10噸橋，457是13噸橋。而且457比153承載能力強(qiáng)，153橋是十噸橋，半軸螺絲八棵，傳動(dòng)軸六根絲；457橋是十三噸橋,半軸螺絲十棵，傳動(dòng)軸八根絲。

　　The standard load of 457 rear axle is 13 tons, and the bearing capacity of 457 bridge is increased. The bearing capacity is the same, and there is no big change. According to the parameters, 153 is Dongfeng 10 ton bridge and 457 is 13 ton bridge. Moreover, the bearing capacity of 457 is stronger than that of 153. The 153 bridge is a ten ton bridge, with eight half shaft screws and six transmission shaft wires; the 457 bridge is a thirteen ton bridge, with ten half shaft screws and eight transmission shaft wires.

　　153橋，其被動(dòng)齒輪分度圓直徑為435mm，是當(dāng)初東風(fēng)引進(jìn)的日產(chǎn)柴的技術(shù)，前橋5T，后橋10T，裝在東風(fēng)當(dāng)初的153車(chē)型上，得名153橋。

　　The diameter of the dividing circle of the passive gear of the 153 axle is 435mm, which is the Nissan Diesel technology introduced by Dongfeng at the beginning. The front axle 5T and the rear axle 10t were installed on the original 153 model of Dongfeng, so they were named 153 axle.

　　457橋的457指的是減速器從動(dòng)齒輪節(jié)圓直徑為457mm，13噸中后橋。435、460、457、485、300等等這些數(shù)字，都代表了該車(chē)橋中間被動(dòng)齒輪(也就是大家常說(shuō)的盆齒)的節(jié)圓直徑。

　　457 of 457 axle refers to the driven gear pitch circle diameter of 457mm, 13 tons of middle and rear axle. The numbers 435, 460, 457, 485, 300 and so on all represent the pitch circle diameter of the middle driven gear (also known as the basin tooth).
             

　　后橋的作用是什么？

　　What is the role of the rear axle?

　　1、如果是前橋驅(qū)動(dòng)的車(chē)輛，那么后橋就僅僅是隨動(dòng)橋而已，只起到承載的作用。

　　1. If the vehicle is driven by the front axle, then the rear axle is just a follow-up axle, which only plays the role of bearing.

　　2、如果前橋不是驅(qū)動(dòng)橋，那么后橋就是驅(qū)動(dòng)橋，這時(shí)候除了承載作用外還起到驅(qū)動(dòng)和減速還有差速的作用。

　　2. If the front axle is not the drive axle, then the rear axle is the drive axle. At this time, in addition to the bearing function, it also plays the role of driving and deceleration, as well as differential speed.

　　3、如果是四輪驅(qū)動(dòng)的，一般在后橋前面還配有一個(gè)分動(dòng)器，后橋分為整體橋和半橋，整體橋配非獨(dú)立懸架，如鋼板簧懸架，橋配獨(dú)立懸架，如麥弗遜式懸架。

　　3. If it is four-wheel drive, generally, there is a transfer case in front of the rear axle. The rear axle is divided into integral axle and half axle. The integral axle is equipped with non independent suspension, such as steel leaf spring suspension, and the axle is equipped with independent suspension, such as McPherson suspension.

　　后橋技術(shù)參數(shù)

　　Technical parameters of rear axle

　　1.承載級(jí)別：是指后橋設(shè)計(jì)大承載質(zhì)量，以噸表示如：6噸級(jí)，10噸級(jí)，11噸級(jí)。等級(jí)超過(guò)13噸級(jí)的在國(guó)內(nèi)道路是禁止的。

　　1. Bearing grade: it refers to the design large bearing mass of rear axle, expressed in tons, such as 6 tons, 10 tons and 11 tons. Roads over 13 tons are prohibited in China.

　　2.速比：是指用發(fā)動(dòng)機(jī)的轉(zhuǎn)速或者電機(jī)的轉(zhuǎn)數(shù)除以減速機(jī)的輸出轉(zhuǎn)數(shù)，得出的數(shù)值就是減速機(jī)的速比。在出廠時(shí)車(chē)輛會(huì)注明這個(gè)數(shù)值，因?yàn)槿蘸缶S修可能需要用到。

　　2. Speed ratio: the speed ratio of the reducer is obtained by dividing the speed of the engine or the revolution of the motor by the output revolution of the reducer. This value will be indicated when the vehicle leaves the factory because it may be needed for future maintenance.