Tamping unit for tamping sleepers of a track

Abstract

The invention relates to a tamping unit for tamping sleepers of a track, comprising a tamping unit segment with opposing tamping tools tiltably mounted on a height-adjustable tool carrier, with the respective tamping tool being coupled with a vibration drive via a transmission element. The respective transmission element is connected with the assigned tamping tool via a first joint and with a squeezing drive supported on the same tamping tool via a second joint. This design enables a space-saving arrangement of the squeezing drives, resulting in a compact design.

1 . A tamping unit for tamping sleepers of a track, comprising a tamping unit segment with opposing tamping tools tiltably mounted on a height-adjustable tool carrier, with the respective tamping tool being coupled with a vibration drive via a transmission element, wherein the respective transmission element is connected with the assigned tamping tool via a first joint and with a squeezing drive supported on the same tamping tool via a second joint. 
     
     
         2 . The tamping unit according to  claim 1 , wherein the respective transmission element is linked to the vibration drive via a third joint. 
     
     
         3 . The tamping unit according to  claim 2 , wherein the third joint is arranged between the first joint and the second joint. 
     
     
         4 . The tamping unit according to  claim 1 , wherein the vibration drive is designed as an eccentric drive. 
     
     
         5 . The tamping unit according to  claim 4 , wherein each transmission element is connected with an eccentric arm mounted on an eccentric section of an eccentric shaft of the eccentric drive in an articulated manner. 
     
     
         6 . The tamping unit according to  claim 1 , wherein the respective squeezing drive is designed as a hydraulic cylinder with an approximately vertically aligned cylinder axis. 
     
     
         7 . The tamping unit according to  claim 6 , wherein each squeezing cylinder is linked to the assigned tamping tool on the cylinder side and to the assigned transmission element on the piston rod side. 
     
     
         8 . The tamping unit according to  claim 6 , wherein an angle (α) between the respective cylinder axis and a vertical axis is at most 20°, in particular at most 10°, during a squeezing process. 
     
     
         9 . The tamping unit according to  claim 1 , wherein the respective tamping tool has an upper lever arm and a lower lever arm, that the lower lever arm comprises at least one tamping tine, and that the upper lever arm is connected with the assigned transmission element. 
     
     
         10 . The tamping unit according to  claim 9 , wherein at least one tamping tine is arranged in a tamping tine support that can be tilted upwards. 
     
     
         11 . The tamping unit according to  claim 1 , wherein the respective tamping unit segment comprises only two tamping tools for tamping a single sleeper of the track. 
     
     
         12 . The tamping unit according to  claim 11 , wherein several tamping unit segments are arranged one behind the other for the simultaneous tamping of adjacent sleepers of the track. 
     
     
         13 . The tamping unit according to  claim 12 , the tamping unit segments arranged one behind the other are arranged in a shared tamping unit frame and that each tamping unit segment is height-adjustable separately by means of an assigned height-adjustment drive. 
     
     
         14 . The tamping unit according to  claim 12 , wherein only some of the tamping unit segments ( 4 ) have tamping tine supports ( 12 ,  13 ) that can be tilted upwards. 
     
     
         15 . A track tamping machine according to  claim 12 , wherein at least two tamping unit segments are of identical design.