US 12,281,448 B2
Welding unit for welding rails of a track
Andreas Bauer, Alberndorf (AT); Markus Oellinger, Wang (AT); and Ronald Steiner, Rabenstein an der Pielach (AT)
Assigned to Plasser & Theurer Export von Bahnbaumaschinen Gesellschaft M.B.H., Vienna (AT)
Appl. No. 17/631,567
Filed by PLASSER & THEURER EXPORT VON BAHNBAUMASCHINEN GESELLSCHAFT M.B.H., Vienna (AT)
PCT Filed Jun. 30, 2020, PCT No. PCT/EP2020/068321
§ 371(c)(1), (2) Date Jan. 31, 2022,
PCT Pub. No. WO2021/018497, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. A 265/2019 (AT), filed on Jul. 31, 2019.
Prior Publication US 2022/0316146 A1, Oct. 6, 2022
Int. Cl. B23K 37/00 (2006.01); B23K 37/02 (2006.01); E01B 11/46 (2006.01); E01B 29/46 (2006.01); B23K 101/26 (2006.01)
CPC E01B 29/46 (2013.01) [B23K 37/0217 (2013.01); B23K 37/0282 (2013.01); E01B 11/46 (2013.01); B23K 2101/26 (2018.08)] 11 Claims
OG exemplary drawing
 
1. A welding unit for welding rails of a track, the welding unit comprising:
unit guides extending in a rail longitudinal direction;
clamping jaws for clamping the rails;
displacement cylinders each having a respective cylinder body and a respective piston rod;
first and second sub-units, said first sub-unit being displaceable on said unit guides in said rail longitudinal direction relative to said second sub-unit by said displacement cylinders, each of said sub-units including clamping cylinders disposed underneath said unit guides and coupled to said clamping jaws; and
said cylinder body of each displacement cylinder being directly flange-connected to a respective one of said sub-units and said piston rod of each displacement cylinder being directly flange-connected to a respective other of said sub-units, for interconnecting said first and second sub-units.