Title:
CRANE HYDRAULIC CONTROL SYSTEM AND CRANE
Document Type and Number:
WIPO Patent Application WO/2024/087626
Kind Code:
A1
Abstract:
A crane hydraulic control system and a crane, relating to the technical field of hydraulic systems. The crane hydraulic control system comprises: a rotation control subsystem (11), the rotation control subsystem (11) being suitable for being transmittingly connected to a rotation mechanism (22); a lifting control subsystem (12), the lifting control subsystem (12) being suitable for being transmittingly connected to a lifting mechanism (20); and a main control assembly (13), connected to the rotation control subsystem (11) and the lifting control subsystem (12) by means of a main control oil path (14), wherein the main control assembly (13) is capable of controlling the oil supply state of the main control oil path (14) to control the rotation control subsystem (11) and the lifting control subsystem (12) to perform state adjustment between a normal working state and a free floating state. According to the technical solution, a cargo boom can enter the free floating state by means of the rotation control subsystem (11) and the lifting control subsystem (12), the operation process is simple and convenient, a one-key operation effect can be realized, an operator can be effectively prevented from omitting operation steps, and potential safety hazards can be effectively reduced when the cargo boom is borne by an externally hung trailer to run.
Inventors:
ZOU YANHU (CN)
ZOU XINGLONG (CN)
ZHOU LIYUN (CN)
ZOU XINGLONG (CN)
ZHOU LIYUN (CN)
Application Number:
PCT/CN2023/097224
Publication Date:
May 02, 2024
Filing Date:
May 30, 2023
Export Citation:
Assignee:
HUNAN SANY MEDIUM TONNAGE HOISTING MACHINERY CO LTD (CN)
International Classes:
B66C23/42; F15B11/16
Foreign References:
| CN115744632A | 2023-03-07 | |||
| CN103613011A | 2014-03-05 | |||
| CN110566522A | 2019-12-13 | |||
| CN114212714A | 2022-03-22 | |||
| CN203602275U | 2014-05-21 | |||
| GB2090811A | 1982-07-21 | |||
| JP2004010223A | 2004-01-15 | |||
| JP2006028739A | 2006-02-02 |
Attorney, Agent or Firm:
SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD. (CN)
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