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Title:
ROTARY POWER FAILURE ANTI-LOCK METHOD AND SYSTEM, TOWER CRANE, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/123774
Kind Code:
A1
Abstract:
Provided are a rotary power failure anti-lock method, system, tower crane, and storage medium, comprising: controlling a brake to be powered when rotation is started, so that the brake is switched to a gate-open state; after the brake is kept in a gate-open state, controlling a wind vane coil to be powered so as to enable the wind vane coil to attract a blocking iron plate; after the wind vane coil attracts the blocking iron plate, controlling the brake to power off; when the power supply is powered off, controlling a frequency converter to reduce the output frequency to a preset frequency threshold range such that the motor enters a braking state to brake a rotating mechanism. The problem of an existing tower crane being suddenly powered off during rotary motion, a brake immediately braking the rotating mechanism, causing a crane boom and a balance arm to shake intensely due to inertia, is solved.

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Inventors:
LI YANGYANG (CN)
TIAN QINGWEN (CN)
LI YANG (CN)
Application Number:
PCT/CN2022/089771
Publication Date:
July 06, 2023
Filing Date:
April 28, 2022
Export Citation:
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Assignee:
HUNAN SANY TOWER CRANE CO LTD (CN)
International Classes:
B66C13/30; B66C13/48; B66C23/94; F16D65/14
Foreign References:
CN202657854U2013-01-09
CN201891782U2011-07-06
CN202107461U2012-01-11
CN211769914U2020-10-27
CN204324768U2015-05-13
DE19500545A11996-07-18
Attorney, Agent or Firm:
TALENT PATENT & TRADEMARK FIRM (CN)
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