Working machine with coupling device for fluid-conducting lines and method for establishing an operating state of a working machine

The coupling device with pivotable parts and actuators addresses the inefficiency of manual hydraulic connections in construction machines with multiple positions by enabling automated and stable fluid connections, enhancing operational efficiency.

EP4353910B1Active Publication Date: 2026-01-14LIEBHERR FRANCE
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Patent Information

Application Number
EP2023199601
Authority / Receiving Office
EP · EP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2022-10-12
Filing Date
2023-09-26
Publication Date
2026-01-14
Estimated Expiration
2043-09-26

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Abstract

The invention relates to a machine comprising a first boom section, a second boom section detachably connected to the first boom section, a first and a second fluid-carrying line, and a coupling device for reversibly connecting the first and second lines. The first line is arranged on the first boom section and the second line on the second boom section. The coupling device comprises a first coupling part fluidly connected to the first line, a second coupling part fluidly connected to the second line and connected to the second boom section, and a pivoting part connected to the first boom section, which is pivotable about a pivot axis. By pivoting the pivoting part about the pivot axis, the two coupling parts can be fluidly coupled.According to the invention, the working machine comprises a locking mechanism by means of which the first coupling part can be mechanically connected to the pivoting part for coupling and disconnecting the coupling parts and can be detached from the pivoting part in a state coupled to the second coupling part. The invention further relates to a coupling device for a working machine according to the invention and a method for establishing an operating state of a working machine according to the invention.
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Citation Information

Patent Citations

  • Work equipment, especially wheel loaders

    DE102019126439A1

  • Quick coupling with centering device

    DE102020110523A1

  • COUPLING DEVICE FOR HEAVY EARTHWORKING MACHINES

    DE69328026T2

  • Quick coupling

    EP1239087A1

  • Work equipment for a work vehicle and work vehicle

    EP3434828A1