US 12,104,330 B2
Method and track maintenance machine for treatment of a ballast track
Heinz Springer, Tokyo (JP)
Assigned to Plasser & Theurer Export von Bahnbaumaschinen Gesellschaft m.b.H., Vienna (AT)
Appl. No. 17/299,547
Filed by Plasser & Theurer Export von Bahnbaumaschinen Gesellschaft m.b.H., Vienna (AT)
PCT Filed Dec. 2, 2019, PCT No. PCT/EP2019/083209
§ 371(c)(1), (2) Date Jun. 3, 2021,
PCT Pub. No. WO2020/135973, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. A 390/2018 (AT), filed on Dec. 27, 2018.
Prior Publication US 2022/0025585 A1, Jan. 27, 2022
Int. Cl. E01B 27/17 (2006.01); E01B 27/02 (2006.01); E01B 29/04 (2006.01)
CPC E01B 27/17 (2013.01) [E01B 27/026 (2013.01); E01B 29/04 (2013.01); E01B 2203/10 (2013.01); E01B 2203/12 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for treatment of a ballast track by means of track maintenance machine which comprises:
a lifting unit comprising:
gripping rollers coupled to the lifting unit for gripping a track grid formed of rails and sleepers;
lifting drives for lifting the track grid; and
lining drives by means of which the track grid is aligned, and that during a lining operation the vibration of the lifting unit is reduced;
a measuring system for comparing to a target position of the track,
a vibration exciter wherein the lifting unit is set in vibration by means of said vibration exciter and the vibration is transmitted to the track grid;
a control device wherein the lifting unit is controlled by means of said control device in such a way that, during a lifting operation, the lifting unit is set in vibration, and the track grid is first lifted to above the target position and subsequently lowered to the target position.