US 12,392,102 B2
Construction machine, displacement tube and method for creating a filling material column in the ground
Michael Seifert, Barleben (DE); Bernhard Karmann, Ehekirchen-Seiboldsdorf (DE); Heiko Voigt, Döbeln (DE); and Herbert Karl, Osterham (DE)
Assigned to BAUER Spezialtiefbau GmbH, Schrobenhausen (DE)
Appl. No. 18/263,484
Filed by BAUER Spezialtiefbau GmbH, Schrobenhausen (DE)
PCT Filed Mar. 14, 2022, PCT No. PCT/EP2022/056484
§ 371(c)(1), (2) Date Jul. 28, 2023,
PCT Pub. No. WO2022/200096, PCT Pub. Date Sep. 29, 2022.
Claims priority of application No. 21164548 (EP), filed on Mar. 24, 2021.
Prior Publication US 2024/0084540 A1, Mar. 14, 2024
Int. Cl. E02D 5/38 (2006.01); E02D 5/66 (2006.01)
CPC E02D 5/385 (2013.01) [E02D 5/665 (2013.01); E02D 2200/1685 (2013.01); E02D 2250/0007 (2013.01); E02D 2250/003 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A construction machine for introducing a displacement tube into the ground, wherein the displacement tube comprises a tube base body and, at its lower end, a closure device which comprises at least one closure flap which is adjustable between a closed position, in which the displacement tube is closed downwards by the at least one closure flap and an open position in which filling material can exit from the displacement tube into the ground for forming a filling material column, wherein the construction machine comprises a feed drive for introducing and retracting the displacement tube into and out of the ground, respectively,
wherein
an actuating unit having at least one pressing-on element is arranged on the construction machine, by means of which the at least one closure flap is adjustable from the open position into its closed position and retainable in said position before contacting the ground at least until the closed closure flap penetrates into the ground.