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公开(公告)号：US11976440B2
公开(公告)日：2024-05-07
申请号：US18116064
申请日：2023-03-01
Applicant: Liebherr-Werk Bischofshofen GmbH
Inventor： Georg Ganitzer , Christoph Kiegerl , David Sagorz , Birgit Kainz , Peter Kainz
IPC: E02F9/08
CPC classification number: E02F9/0866
Abstract: The present invention relates to a working machine having an engine room and a housing, wherein the housing at least partially surrounds or can surround the engine room, wherein a venting space, in which a line mouth of a line ends, is arranged on the housing, wherein the venting space is delimited from the engine room, preferably delimited in a gas-tight manner, and wherein the venting space is formed by a partial region of the housing and a bottom piece arranged in the engine room.
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公开(公告)号：US12195950B2
公开(公告)日：2025-01-14
申请号：US17620131
申请日：2020-06-25
Applicant: LIEBHERR-WERK BISCHOFSHOFEN GMBH
Inventor： Hans Knapp , Josef Stock , Rupert Gappmaier , Christoph Kiegerl , Reinhard Windhofer , Florian Altenberger
Abstract: The present invention relates to a mobile work machine, in particular to a wheeled loader, having a hydraulic circuit, having a pump for conveying a hydraulic medium through the hydraulic circuit, and having at least one control block having an inflow control edge and an outflow control edge for controlling the flow of the hydraulic medium, wherein the work machine has a working tool and a cylinder for actuating the working tool and wherein the cylinder has an outflow and in inflow for the hydraulic medium, and wherein the outflow is in fluid communication with the outflow control edge and the inflow is in fluid communication with the inflow control edge, and wherein the inflow control edge does not have any or has fewer fine control notches than the outflow control edge and thus works in a largely unrestricted manner, while the outflow control edge is equipped with one or more fine control notches so that with a pulling load at the working tool, the outflow control edge restricts the outflow amount through the outflow of the cylinder.
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公开(公告)号：US12011986B2
公开(公告)日：2024-06-18
申请号：US17889659
申请日：2022-08-17
Applicant: Liebherr-Werk Bischofshofen GmbH
Inventor： Hans Knapp , Hendrik Richter , Christoph Kiegerl , Reinhard Windhofer , Johannes Hofbauer
Abstract: The present invention relates to a work machine, in particular a wheeled loader, having an electric motor and having oil cooling that is suitable and intended to cool the electric motor and having a driving axle that has an oil reservoir, wherein a feed line from said oil reservoir to the electric motor and a discharge line from the electric motor to said oil reservoir are present and a pump is present to pump oil from the oil reservoir to the electric motor so that the electric motor is cooled by means of oil from the oil reservoir of the driving axle.
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公开(公告)号：US10942539B2
公开(公告)日：2021-03-09
申请号：US16099696
申请日：2017-05-11
Applicant: LIEBHERR-WERK BISCHOFSHOFEN GMBH
Inventor： Mario Hettegger , Manuel Bos , Hans Knapp , Christoph Kiegerl
Abstract: The invention relates to a system for controlling a work machine, in particular a wheel loader, having at least one hand-held control device (6), in particular a joystick or steering wheel, at least one restoring device (8) in the form of one or more spring assemblies, which are connected to the hand-held control device in such a way a restoring force is exerted upon the hand-held control device by the spring assembly when said spring assembly is not in the central position. An adjusting device (9, 12, 13) which engages with the spring assembly such that an adjustment of the central position of the spring assembly can be carried out, is provided.
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