Invention Grant
- Patent Title: Crane
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Application No.: US16650170Application Date: 2018-09-28
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Publication No.: US11518658B2Publication Date: 2022-12-06
- Inventor: Shinsuke Kanda , Kazuma Mizuki
- Applicant: TADANO LTD.
- Applicant Address: JP Kagawa
- Assignee: TADANO LTD.
- Current Assignee: TADANO LTD.
- Current Assignee Address: JP Kagawa
- Agency: Paratus Law Group, PLLC
- Priority: JPJP2017-192191 20170929
- International Application: PCT/JP2018/036410 WO 20180928
- International Announcement: WO2019/066016 WO 20190404
- Main IPC: B66C13/06
- IPC: B66C13/06 ; B66C13/22 ; B66C23/42

Abstract:
Provided is a crane that is capable of effectively suppressing oscillation related to the pendulum resonance frequency generated in a suspended load on the basis of the suspended length of a wire rope. The crane 1 calculates a suspended load oscillation resonance frequency ωx(n) determined on the basis of the suspended length L(n) of a wire rope (14·16), and generates a control signal C(n) for an actuator according to an arbitrarily defined operation signal, and, on the basis of the resonance frequency ωx(n), generates from the control signal C(n) a filtering control signal Cd(n) for the actuator in which a frequency component in an arbitrarily defined frequency range is attenuated by an arbitrarily defined percentage. The frequency range of the attenuated frequency component and/or the percentage of attenuation is altered on the basis of the suspended length L(n) of the wire rope (14·16).
Public/Granted literature
- US20200223670A1 CRANE Public/Granted day:2020-07-16
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