Title:
LIFTING COUNTERWEIGHT AND CRANE
Document Type and Number:
WIPO Patent Application WO/2021/249398
Kind Code:
A1
Abstract:
A lifting counterweight, comprising a connecting rope (101) and a movable counterweight (102). One end of the connecting rope (101) is connected to a drum (103) of the crane, and the other end of the connecting rope (101) is connected to the movable counterweight (102); the drum (103) is rotated to drive the connecting rope (101) to move, so that the connecting rope (101) pulls the movable counterweight (102) to be lifted or lowered. Also provided is a crane, comprising the lifting counterweight. By configuring the connecting rope to drive the movable counterweight to be lifted, the device has a simple structure and low costs, and solves the problem of non-synchronization in a mode of using an oil cylinder to drive a movable counterweight.
Inventors:
DAI WENYIN (CN)
XIA MENG (CN)
XIA MENG (CN)
Application Number:
PCT/CN2021/098935
Publication Date:
December 16, 2021
Filing Date:
June 08, 2021
Export Citation:
Assignee:
SANY MOBILE CRANES CO LTD (CN)
International Classes:
B66D1/74; B66C23/72
Foreign References:
| CN111606227A | 2020-09-01 | |||
| CN105600690A | 2016-05-25 | |||
| CN209536840U | 2019-10-25 | |||
| CN208046070U | 2018-11-02 | |||
| CN203065061U | 2013-07-17 | |||
| CN202369297U | 2012-08-08 | |||
| CN201214604Y | 2009-04-01 | |||
| US20030019828A1 | 2003-01-30 | |||
| JP2004067347A | 2004-03-04 |
Attorney, Agent or Firm:
TALENT PATENT & TRADEMARK FIRM (CN)
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