Title:
HYDRAULIC SYSTEM FOR ROTARY MACHINE TOOL
Document Type and Number:
WIPO Patent Application WO/2023/035794
Kind Code:
A1
Abstract:
A hydraulic system for a rotary machine tool, comprising an oil tank, a main pump, a control valve, and a rotary motor. The oil tank is connected to an oil suction port of the main pump. An oil outlet of the main pump is connected to a port P of a control valve, a port T of the control valve is communicated with the oil tank, and a port A of the control valve and a port B of the control valve are connected to two ends of the rotary motor. The control valve comprises a compensation valve, an electric proportional valve, and an electromagnetic directional valve. The port P is connected to a first oil port of the electric proportional valve, a third oil port of the compensation valve, and a fifth oil port of the compensation valve. A second oil port of the electric proportional valve is connected to a first oil port of the compensation valve. A second oil outlet of the compensation valve is connected to a third oil port of the electromagnetic directional valve and the port T. A fourth oil outlet of the compensation valve is connected to the port T. A fourth oil port of the electromagnetic directional valve is connected to the port T. A second oil port of the electromagnetic directional valve is connected to the port B. According to the present device, by adding the control valve, the flow into the motor of the machine tool can be adjusted to achieve individual control over the motor speed of the machine tool.
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Inventors:
JIN YUEFENG (CN)
GENG JIAWEN (CN)
YUAN QUAN (CN)
ZHANG JIAN (CN)
DONG YUZHONG (CN)
DU DONGYANG (CN)
ZHANG YANG (CN)
SUN BENQIANG (CN)
MIAO HENG (CN)
LU JIE (CN)
ZHANG XINKUI (CN)
GENG JIAWEN (CN)
YUAN QUAN (CN)
ZHANG JIAN (CN)
DONG YUZHONG (CN)
DU DONGYANG (CN)
ZHANG YANG (CN)
SUN BENQIANG (CN)
MIAO HENG (CN)
LU JIE (CN)
ZHANG XINKUI (CN)
Application Number:
PCT/CN2022/107922
Publication Date:
March 16, 2023
Filing Date:
July 26, 2022
Export Citation:
Assignee:
XUZHOU XCMG EXCAVATOR MACHINERY CO LTD (CN)
International Classes:
F15B11/08; F15B13/04
Foreign References:
| CN107355438A | 2017-11-17 | |||
| CN113833701A | 2021-12-24 | |||
| CN212202669U | 2020-12-22 | |||
| CN101451548A | 2009-06-10 | |||
| JP2009162350A | 2009-07-23 | |||
| CN204628143U | 2015-09-09 | |||
| CN110894840A | 2020-03-20 | |||
| JP2005325886A | 2005-11-24 | |||
| JP2008308944A | 2008-12-25 | |||
| CN113062888A | 2021-07-02 | |||
| JPH08100805A | 1996-04-16 | |||
| JP2016216008A | 2016-12-22 | |||
| JPH10331802A | 1998-12-15 | |||
| JP2015145602A | 2015-08-13 |
Attorney, Agent or Firm:
NANJING ZONGHENG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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