System of a crane and an exchangeable tool

    公开(公告)号:US12234129B2

    公开(公告)日:2025-02-25

    申请号:US18443050

    申请日:2024-02-15

    Applicant: ITREC B.V.

    Abstract: A system comprising a crane and an exchangeable tool. The crane and the tool respectively comprise an upper tool connector with tool retainers and a lower tool connector which can be interconnected, e.g. a male and female connector, e.g. the lower tool connector of the tool being embodied as a shank provided with a shoulder and the upper tool connector as a tool clamp with a female, open-centered body. A tool suspension device comprises the upper tool connector. a travelling block member. The tool clamp has multiple mobile tool retainers adapted to—in a non-operative position—allow introduction of the shank of the tool from below into the shank receiving passage and—in an operative position—engage below the shoulder of the shank that has been introduced into the passage so as to suspend the tool. The upper tool connector may comprise a bearing allowing for swivelling of the open-centered body, and e.g. a rotational drive operative between the clamp housing and the female, open-centered body to actively drive said swivelling.

    MODULAR UTILITY SYSTEM
    5.
    发明申请

    公开(公告)号:US20220299159A1

    公开(公告)日:2022-09-22

    申请号:US17805815

    申请日:2022-06-07

    Abstract: A kit of portable modular components for use in demountably configuring a variety of structural assemblies. The kit comprises three types of elongate structural support components wherein the first type has a pair of opposed male ends, the second type has a male end and an opposed female end, and the third type has a pair of opposed female ends, wherein the male ends are configured for demountable engagement with the female ends. Each of the male ends comprises a cylindrical body with at least one linear set of two spaced-apart prongs around the circumferential surface of the cylindrical body. Each of the female ends has a cylindrical receptacle with one or more linear channels for receiving therein the cylindrical body and the at least one linear set of prongs. The female ends are provided with locking assemblies for releasable engagement the male ends.

    LIFT CONTROL SYSTEMS FOR LIFTING DEVICES AND LIFTING DEVICES COMPRISING THE SAME

    公开(公告)号:US20220296446A1

    公开(公告)日:2022-09-22

    申请号:US17835422

    申请日:2022-06-08

    Inventor: Gunnar Liljedahl

    Abstract: According to embodiments, a method for operating a lifting device monitoring with a control unit, monitoring current supplied to the lift actuator when the lift actuator is actuated; discontinuing the current supplied to the lift actuator when the current exceeds a current threshold value; determining an accumulated number of overload stops based on the current supplied to the lift actuator; determining at least one operating characteristic of the lifting device and an operating time of the lifting device as the lifting device is actuated; determining an accumulated load-time parameter for the lifting device based on the at least one operating characteristic and the operating time; and uploading, with a transceiver, at least one of the accumulated number of overload stops and the accumulated load-time parameter to at least one of the computer, the network, and the data storage device.

    Construction machine
    8.
    发明授权

    公开(公告)号:US11066281B2

    公开(公告)日:2021-07-20

    申请号:US16481089

    申请日:2018-01-30

    Inventor: Yuudai Motoyama

    Abstract: A construction machine allows a worker to easily move between one pair of side frames through a travelling body weight. The construction machine includes a lower travelling body of a crane includes a truck frame, a left side frame and a right side frame, a front weight and a rear weight, and scaffolding members. Scaffolding upper surface parts of the scaffolding members and upper surface parts of the front weight and the rear weight are disposed in line with each other along a left and right direction, and form a moving passage that allows the worker to move between the left and right side frames.

    Asymmetrical track crawler positioning system

    公开(公告)号:US10780919B2

    公开(公告)日:2020-09-22

    申请号:US15867424

    申请日:2018-01-10

    Abstract: A control system for a machine having a support structure, a track roller frame assembly coupled to the support structure and a machine body coupled to the support structure, the electronic control system including a lateral position sensor that is coupled to the track roller frame assembly and is configured to detect a lateral position of the track roller frame assembly relative to the support structure, an angular position sensor that is coupled to the machine body and is configured to detect an angular position of the machine body relative to the support structure, and a processor configured to determine a parameter for the tracked machine based on the detected lateral position of the track roller frame assembly, the detected lateral position indicative asymmetrical positioning a track roller frame assembly, and the detected angular position of the machine body, and provide feedback based on the parameter for the tracked machine.

    Slew bearing, method for using a slew bearing, hoisting crane and vessel

    公开(公告)号:US10760612B1

    公开(公告)日:2020-09-01

    申请号:US16093463

    申请日:2017-04-17

    Applicant: ITREC B.V.

    Abstract: A slew bearing includes a stationary bearing ring to be fixed to a base, a moveable bearing ring to be fixed to a moveable object, wherein the stationary bearing ring and the moveable bearing ring are configured to enable rotation of the moveable bearing ring relative to the stationary bearing ring about a rotation axis. A main axial bearing and an auxiliary bearing are provided between the stationary bearing ring and the moveable bearing ring, wherein the moveable bearing ring includes one or more main portions and one or more auxiliary portions, which one or more main portions are moveable relative to the one or more auxiliary portions between an operational position, in which the main axial bearing transfers the axial loads between moveable bearing ring and stationary bearing ring, and a maintenance position, in which the auxiliary axial bearing transfers the axial loads between moveable bearing ring and stationary bearing ring and the main bearing is allowed to be inspected and/or maintained so that the slew bearing during inspection and/or maintenance is still operational.

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