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1. WO2020114656 - SPECIALIZED CIVIL ENGINEERING MACHINE, IN PARTICULAR SLOTTED WALL MILLING MACHINE

Publication Number WO/2020/114656
Publication Date 11.06.2020
International Application No. PCT/EP2019/078134
International Filing Date 17.10.2019
IPC
E02D 17/13 2006.01
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
17Excavations; Bordering of excavations; Making embankments
13Foundation slots; Implements for making these slots
E02F 3/18 2006.01
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
FDREDGING; SOIL-SHIFTING
3Dredgers; Soil-shifting machines
04mechanically-driven
18with digging wheels turning round an axis
E02F 3/20 2006.01
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
FDREDGING; SOIL-SHIFTING
3Dredgers; Soil-shifting machines
04mechanically-driven
18with digging wheels turning round an axis
20with tools that only loosen the material
CPC
E02D 17/13
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS
17Excavations; Bordering of excavations; Making embankments
13Foundation slots ; or slits; Implements for making these slots ; or slits
E02F 3/18
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
FDREDGING; SOIL-SHIFTING
3Dredgers; Soil-shifting machines
04mechanically-driven
18with digging wheels turning round an axis ; , e.g. bucket-type wheels
E02F 3/20
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
FDREDGING; SOIL-SHIFTING
3Dredgers; Soil-shifting machines
04mechanically-driven
18with digging wheels turning round an axis ; , e.g. bucket-type wheels
20with tools that only loosen the material ; , i.e. mill-type wheels
E02F 3/205
EFIXED CONSTRUCTIONS
02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
FDREDGING; SOIL-SHIFTING
3Dredgers; Soil-shifting machines
04mechanically-driven
18with digging wheels turning round an axis ; , e.g. bucket-type wheels
20with tools that only loosen the material ; , i.e. mill-type wheels
205with a pair of digging wheels, e.g. slotting machines
Applicants
  • LIEBHERR-WERK NENZING GMBH [AT]/[AT]
Inventors
  • REINHARDT, Hans
Agents
  • DR. DIETER LAUFHÜTTE/LORENZ SEIDLER GOSSEL RECHTSANWÄLTE PATENTANWÄLTE PARTNERSCHAFT MBB
Priority Data
10 2018 131 226.106.12.2018DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) SPEZIALTIEFBAUMASCHINE, INSBESONDERE SCHLITZWANDFRÄSE
(EN) SPECIALIZED CIVIL ENGINEERING MACHINE, IN PARTICULAR SLOTTED WALL MILLING MACHINE
(FR) ENGIN SPÉCIAL DE GÉNIE CIVIL, NOTAMMENT FRAISEUSE À RIDEAU SOUTERRAIN
Abstract
(DE)
Die vorliegende Erfindung betrifft eine Spezialtiefbaumaschine, insbesondere Schlitzwandfräse, mit wenigstens einem rotierenden Werkzeug und einem Werkzeugantrieb, der innerhalb eines Gehäuses der Spezialtiefbaumaschine angeordnet ist und im Bereich seines Wellenaustritts aus dem Gehäuse zum angetriebenen Werkzeug mittels wenigstens einer Lagerdichtung gegenüber der Umgebung abgedichtet ist, dadurch gekennzeichnet, dass die Lagerdichtung wenigstens zwei separate Dichtungselemente umfasst, durch deren Anordnung eine zwischen den Dichtungselementen liegende Dichtkammer gebildet ist, wobei eine Druckausgleichsvorrichtung vorgesehen ist, die den Kammerdruck in der Dichtkammer in Abhängigkeit des Umgebungsdruckes der Spezialtiefbaumaschine steuert.
(EN)
The invention relates to a specialized civil engineering machine, in particular a slotted wall milling machine, comprising at least one rotating tool and a tool drive which is arranged within a housing of the specialized civil engineering machine and is sealed from the surroundings by at least one bearing seal in the region of the machine shaft outlet from the housing to the driven tool. The invention is characterized in that the bearing seal comprises at least two separate seal elements, the arrangement of which forms a sealed chamber lying between the seal elements, wherein a pressure compensating device is provided which controls the chamber pressure in the sealed chamber according to the ambient pressure of the specialized civil engineering machine.
(FR)
La présente invention concerne un engin spécial de génie civil, notamment une fraiseuse à rideau souterrain, comportant au moins un outil rotatif et un dispositif d’entraînement d’outil qui est disposé à l’intérieur du carter de l’engin spécial de génie civil et rendu étanche par rapport à l’environnement, dans la zone de sa sortie d’arbre hors du carter vers l’outil entraîné au moyen d’au moins un joint de palier, caractérisé en ce que le joint de palier comprend au moins deux éléments d’étanchéité séparés dont l’agencement permet la formation d’une chambre d’étanchéité située entre les éléments d’étanchéité. Un dispositif de compensation de pression est prévu, lequel commande la pression de chambre dans la chambre d’étanchéité en fonction de la pression ambiante de l’engin spécial de génie civil.
Also published as
EP2019789960
Latest bibliographic data on file with the International Bureau