Title:
LEVELING HYDRAULIC CONTROL SYSTEM AND AERIAL WORK PLATFORM
Document Type and Number:
WIPO Patent Application WO/2024/016529
Kind Code:
A1
Abstract:
A leveling hydraulic control system and an aerial work platform. The leveling hydraulic control system comprises: a main oil path (100); a leveling oil path (200), the leveling oil path (200) comprising a first leveling oil cylinder (210), a second leveling oil cylinder (220), a first balancing valve (230) and a second balancing valve (240), wherein a rodless cavity of the first leveling oil cylinder (210) and a rodless cavity of the second leveling oil cylinder (220) are both in communication with a first oil port a of the main oil path (100), a rod cavity of the first leveling oil cylinder (210) and a rod cavity of the second leveling oil cylinder (220) are both in communication with a second oil port b of the main oil path (100), an oil inlet of the first balancing valve (230) is in communication with the rodless cavity of the second leveling oil cylinder (220), an oil outlet of the first balancing valve (230) is in communication with the first oil port a of the main oil path (100), an oil inlet of the second balancing valve (240) is in communication with the rod cavity of the second leveling oil cylinder (220), and an oil outlet of the second balancing valve (240) is in communication with the second oil port b of the main oil path (100); and a pressure replenishment oil path (300), the pressure replenishment oil path (300) being configured to replenish the leveling oil path (200) with hydraulic oil, so as to maintain the pressure value in the leveling oil path (200) at a preset pressure value.
More Like This:
| WO/2018/185607 | COMPACT LIFT |
| JP3595697 | Operation control device for hydraulic booster device |
Inventors:
LIU GUOLIANG (CN)
CAO XIAOFENG (CN)
WANG CHANGPING (CN)
CAO XIAOFENG (CN)
WANG CHANGPING (CN)
Application Number:
PCT/CN2022/132204
Publication Date:
January 25, 2024
Filing Date:
November 16, 2022
Export Citation:
Assignee:
HUNAN SINOBOOM INTELLIGENT EQUIPMENT CO LTD (CN)
International Classes:
B66F11/04; B66F17/00; F15B11/16; F15B13/06
Domestic Patent References:
| WO1997016372A1 | 1997-05-09 |
Foreign References:
| CN115231485A | 2022-10-25 | |||
| CN111547653A | 2020-08-18 | |||
| CN108278229A | 2018-07-13 | |||
| CN108644164A | 2018-10-12 | |||
| CN111396390A | 2020-07-10 | |||
| JP2002321895A | 2002-11-08 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW CO., LTD. (CN)
Download PDF: