Suspended wheel reducer

Abstract

A suspended wheel reducer includes a front sun wheel, a front planetary wheel, a front inner gear ring, a rear sun wheel, a rear planetary wheel, a rear inner gear ring, and a suspended wheel. The front inner gear ring and the rear inner gear ring are shaped at an inner peripheral surface of the suspended wheel and integral with the suspended wheel. A wheel center of the front sun wheel is rigidly coupled with a wheel center of the rear sun wheel through a power input shaft. The front sun wheel is transmissively coupled with the front inner gear ring through the front planetary wheel. The rear sun wheel is transmissively coupled with the rear inner gear ring through the rear planetary wheel. The front planetary wheel is rotatable around a fixed rotating shaft. A wheel center of the rear planetary wheel is connected to a power output shaft.

1 . A suspended wheel reducer, comprising:
 a front planetary gear train including a front sun wheel, a front planetary wheel and a front inner gear ring;   a rear planetary gear train including a rear sun wheel, a rear planetary wheel and a rear inner gear ring; and   a suspended wheel,   wherein   the front inner gear ring and the rear inner gear ring are shaped at an inner peripheral surface of the suspended wheel and integral with the suspended wheel,   a wheel center of the front sun wheel is rigidly coupled with a wheel center of the rear sun wheel through a power input shaft,   the front sun wheel is transmissively coupled with the front inner gear ring through the front planetary wheel,   the rear sun wheel is transmissively coupled with the rear inner gear ring through the rear planetary wheel,   the front planetary wheel is rotatable around a fixed rotating shaft, and   a wheel center of the rear planetary wheel is connected to a power output shaft for outputting power.   
     
     
         2 . The suspended wheel reducer according to  claim 1 , wherein pitch circles of the front sun wheel and the rear sun wheel are identical in their dimensions, and/or pitch circles of the front planetary wheel and the rear planetary wheel are identical in their dimensions, and/or pitch circles of the front inner gear ring and the rear inner gear ring are identical in their dimensions. 
     
     
         3 . The suspended wheel reducer according to  claim 1 , wherein pitch circles of the front sun wheel and the rear sun wheel are distinct in their dimensions, and/or pitch circles of the front planetary wheel and the rear planetary wheel are distinct in their dimensions, and/or pitch circles of the front inner gear ring and the rear inner gear ring are distinct in their dimensions. 
     
     
         4 . The suspended wheel reducer according to  claim 3 , wherein the pitch circles of the front sun wheel and the rear sun wheel have different dimensions, and a ratio thereof is 1.0001˜1000:1 or 1:1.0001˜1000. 
     
     
         5 . The suspended wheel reducer according to  claim 3 , wherein the pitch circles of the front planetary wheel and the rear planetary wheel have different dimensions, and a ratio thereof is 1.0001˜1000:1 or 1:1.0001˜1000. 
     
     
         6 . The suspended wheel reducer according to  claim 3 , wherein the pitch circles of the front inner gear ring and the rear inner gear ring have different dimensions, and a ratio thereof is 1.0001˜1000:1 or 1:1.0001˜1000. 
     
     
         7 . The suspended wheel reducer according to  claim 1 , wherein
 teeth of the front and rear planetary wheels and teeth of the front and rear inner gear rings are skewed teeth, and   the skewed teeth of the front and rear planetary wheels and the skewed teeth of the front and rear inner gear rings have opposite handedness.   
     
     
         8 . The suspended wheel reducer according to  claim 1 , wherein teeth of the front and rear planetary wheels and teeth of the front and rear inner gear rings are herringbone teeth.