公开(公告)号：US20190187742A1

公开(公告)日：2019-06-20

申请号：US16099696

申请日：2017-05-11

Applicant: LIEBHERR-WERK BISCHOFSHOFEN GMBH

Inventor： Mario HETTEGGER ,  Manuel BOS ,  Hans KNAPP ,  Christoph KIEGERL

IPC: G05G5/05 ,  G05G5/03 ,  G05G9/047 ,  G05G1/08

CPC classification number: G05G5/05 ,  G05G1/04 ,  G05G1/08 ,  G05G5/03 ,  G05G9/047

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.

公开(公告)号：US20220251804A1

公开(公告)日：2022-08-11

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

IPC: E02F9/22 ,  F15B11/04

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.

公开(公告)号：US20230358017A1

公开(公告)日：2023-11-09

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.

公开(公告)号：US20230009724A1

公开(公告)日：2023-01-12

申请号：US17782221

申请日：2020-12-03

Applicant: LIEBHERR-WERK BISCHOFSHOFEN GMBH ,  DANFOSS SCOTLAND LTD.

Inventor： Florian ALTENBERGER ,  Josef HUTTEGGER ,  Mario HETTEGGER ,  Christoph KIEGERL ,  Alexis DOLE

IPC: F15B11/17

Abstract: The present invention relates to a hydraulic system for a hydraulically actuable work machine that comprises a switching valve block having a plurality of valve block inputs for a respective connection to a pressure output of one or more hydraulic fluid pumps; having a plurality of valve block outputs for outputting a pressurized hydraulic fluid; and having at least one valve that is arranged between valve block inputs and valve block outputs and that is adapted to selectively produce a fluid connection between a first valve block input and a first valve block output or between the first valve block input and a second valve block output; a plurality of pressure sources, preferably a plurality of separately controllable pressure sources of which each one is connected to a respective valve block input; and a plurality of hydraulic consumers of which each one is connected to a respective valve block output. The system is characterized in that the first valve block output furthermore already has a fixed fluid connection, preferably a fixed exclusive fluid connection, to a second valve block input and in that the steering is connected to the first valve block output.

公开(公告)号：US20230323633A1

公开(公告)日：2023-10-12

申请号：US18107753

申请日：2023-02-09

Applicant: Liebherr-Werk Bischofshofen GmbH

Inventor： Marco EDER ,  Dominik ECKER ,  Rupert GAPPMAIER ,  Christoph KIEGERL ,  Hans KNAPP ,  Leke UKIMERAJ

IPC: E02F9/20

CPC classification number: E02F9/207 ,  E02F9/2091

Abstract: The present invention relates to a work machine having a fuel cell drive comprising a fuel cell and determination means for determining the load demand of the fuel cell, wherein the work machine has a plurality of electrical consumers that are directly or indirectly connected to the fuel cell for the purpose of obtaining electrical energy, wherein the determination means are configured such that the power requirements of at least two of the electrical consumers enter into the determination of the load demand of the fuel cell.

公开(公告)号：US20230059952A1

公开(公告)日：2023-02-23

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

IPC: B60K11/02 ,  B60L1/00 ,  E02F9/08 ,  H02K9/193 ,  H02K9/26

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.

公开(公告)号：US20230059902A1

公开(公告)日：2023-02-23

申请号：US17821135

申请日：2022-08-19

Applicant: Liebherr-Werk Bischofshofen GmbH

Inventor： Hans KNAPP ,  Gerald HEUGENHAUSER ,  Christoph KIEGERL ,  Reinhard DENGG ,  David SAGORZ

IPC: B60K15/03 ,  E02F9/08

Abstract: A work machine, more particularly a wheeled loader, having a cab for the operator of the work machine, wherein the work machine has a drive which can be operated with hydrogen and that one or more tanks for receiving hydrogen are provided, wherein components for receiving the tanks are provided, wherein the tank or tanks are arranged below the cab and, when the work machine is viewed from above, next to the cab of the work machine, wherein the components for receiving the tanks do not have a direct mechanical connection to the cab, and that an armor is provided which partially or completely surrounds the tank.