目前市面上常見的輕量化攪拌機的后橋都分為153后橋和457后橋，來說說這兩種后橋的區(qū)別。

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

　　457后橋標載13噸，457橋加大了軸承，承載量還是一樣的，沒什么大的變化。按參數說153是東風10噸橋，457是13噸橋。而且457比153承載能力強，153橋是十噸橋，半軸螺絲八棵，傳動軸六根絲；457橋是十三噸橋,半軸螺絲十棵，傳動軸八根絲。

　　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，其被動齒輪分度圓直徑為435mm，是當初東風引進的日產柴的技術，前橋5T，后橋10T，裝在東風當初的153車型上，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指的是減速器從動齒輪節(jié)圓直徑為457mm，13噸中后橋。435、460、457、485、300等等這些數字，都代表了該車橋中間被動齒輪(也就是大家常說的盆齒)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、如果是前橋驅動的車輛，那么后橋就僅僅是隨動橋而已，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、如果前橋不是驅動橋，那么后橋就是驅動橋，這時候除了承載作用外還起到驅動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、如果是四輪驅動的，一般在后橋前面還配有一個分動器，后橋分為整體橋和半橋，整體橋配非獨立懸架，如鋼板簧懸架，橋配獨立懸架，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.

　　后橋技術參數

　　Technical parameters of rear axle

　　1.承載級別：是指后橋設計大承載質量，以噸表示如：6噸級，10噸級，11噸級。等級超過13噸級的在國內道路是禁止的。

　　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)動機的轉速或者電機的轉數除以減速機的輸出轉數，得出的數值就是減速機的速比。在出廠時車輛會注明這個數值，因為日后維修可能需要用到。

　　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.