Title:
HYDRAULIC SYSTEM AND ROTARY DRILLING RIG
Document Type and Number:
WIPO Patent Application WO/2023/151196
Kind Code:
A1
Abstract:
A hydraulic system and a rotary drilling rig. The hydraulic system comprises: a main pump (10); an auxiliary valve group (20), an inlet (21) thereof being in communication with the main pump; a winch motor (30), a working oil port (22) of the auxiliary valve group being in communication with a working oil port of the winch motor by means of a first oil path (40), so as to control forward and reverse rotation of the winch motor; a control valve group (70) provided on a first oil path so as to selectively control on/off of the winch motor and the auxiliary valve group; and a plurality of oil cylinders (50), which are arranged in parallel on a second oil path (60), the second oil path being in communication with the working oil port of the auxiliary valve group by means of the control valve group. According to the hydraulic system and the rotary drilling rig, by providing a control valve group, the number of auxiliary valve groups is reduced, and the size of the auxiliary valve group is reduced, so that the space of a chassis is increased without increasing the cost of the chassis; moreover, the hydraulic system can be suitable for both a standard rotary drilling construction method and a CFA construction method (or other construction methods), so that the hydraulic system can be compatible with different construction methods of rotary drilling rigs.
Inventors:
MA QIANG (CN)
DONG BINGKUN (CN)
ZHANG XIANG (CN)
DONG BINGKUN (CN)
ZHANG XIANG (CN)
Application Number:
PCT/CN2022/091413
Publication Date:
August 17, 2023
Filing Date:
May 07, 2022
Export Citation:
Assignee:
BEIJING SANY INTELLIGENT MANUFACTURING TECH CO LTD (CN)
International Classes:
F15B13/06; F15B11/16
Foreign References:
| CN111075800A | 2020-04-28 | |||
| JPH10331210A | 1998-12-15 | |||
| CN113790180A | 2021-12-14 | |||
| CN109231031A | 2019-01-18 | |||
| CN204213086U | 2015-03-18 | |||
| US5896943A | 1999-04-27 | |||
| JPH1081489A | 1998-03-31 |
Attorney, Agent or Firm:
SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD. (CN)
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