Title:
OIL-ELECTRIC HYBRID DRIVING ENVIRONMENT-FRIENDLY ENERGY-SAVING SERVO HYDRAULIC PRESS MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/015383
Kind Code:
A1
Abstract:
An oil-electric hybrid servo hydraulic press machine, comprising a sliding block (1). The top of the sliding block (1) is connected below a sliding block cylinder; the sliding block cylinder comprises a servo electric cylinder (1b) located in the center and sliding block main cylinders (1a) located on both sides symmetrically; the sliding block main cylinders (1a) are connected to an oil tank by means of liquid filling valves (CF1), separately; an inlet of a first servo pump (B1) driven by a first servo motor (M1) is connected to the oil tank; an outlet of the first servo pump (B1) is connected to the inlet of a fifth cartridge valve (C5); the outlet of the fifth cartridge valve (C5) is connected to a liquid control port thereof and a port P of a fifth electromagnetic reversing valve (YV5); a port T of the fifth electromagnetic reversing valve (YV5) is connected to the oil tank; a port A of the fifth electromagnetic reversing valve (YV5) is connected to an operation oil pipe (G1); a port B of the fifth electromagnetic reversing valve (YV5) is connected to an energy storage oil pipe (G2) by means of a first one-way valve (D1); the energy storage oil pipe (G2) is connected to the bottom of a first accumulator (AC1) and is connected to a first pressure switch (H1); the energy storage oil pipe (G2) is further connected to a port P of a third electromagnetic reversing valve (YV3); a port T of the third electromagnetic reversing valve (YV3) is connected to the oil tank; a port A of the third electromagnetic reversing valve (YV3) is connected to lower liquid control ports of the liquid filling valves (CF1); a port B of the third electromagnetic reversing valve (YV3) is connected to upper liquid control ports of the liquid filling valves (CF1); both the third electromagnetic reversing valve (YV3) and the fifth electromagnetic reversing valve (YV5) are two-position four-way electromagnetic reversing valves. The hydraulic press machine can achieve the flexible conversion of the speed of the sliding block and the precise control on the position thereof, the noise is low, the energy consumption is low, and the use of hydraulic oil can be reduced.
Inventors:
QIAO LIHUI (CN)
Application Number:
PCT/CN2019/080724
Publication Date:
January 23, 2020
Filing Date:
April 01, 2019
Export Citation:
Assignee:
YANGLI GROUP CORPORATION LTD (CN)
International Classes:
F15B1/02; B30B1/32; F15B11/16
Foreign References:
| CN208605412U | 2019-03-15 | |||
| CN108757594A | 2018-11-06 | |||
| CN106122128A | 2016-11-16 | |||
| CN202862614U | 2013-04-10 | |||
| SE9303824D0 | 1993-11-18 |
Attorney, Agent or Firm:
NANJING SUKE PATENT AGENT CO., LTD. (CN)
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