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Patent Searching and Data


Title:
ENERGY REGENERATION DEVICE AND WORK MACHINE PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2018/088145
Kind Code:
A1
Abstract:
Provided are: an energy regeneration device capable of controlling the flow of a hydraulic fluid discharged from an actuator while regenerating energy from the hydraulic fluid; and a work machine provided with same. The regeneration device (100) is provided with a boom cylinder (20), an inertial fluid container (102), an oil tank (110), an accumulator (105), a low pressure-side switch (103), and a high pressure-side switch (104). A calculation unit (151) calculates the duty ratio for switching the low pressure-side switch (103) and the high pressure-side switch (104) according to the target flow of hydraulic fluid discharged from the boom cylinder (20). A regeneration-controlling unit (153) alternately switches the inertial fluid container (102) between being in communication with the low pressure-side switch (103) and the high pressure-side switch (104) on the basis of the calculated duty ratio and supplies the discharged hydraulic fluid to the accumulator (105).

Inventors:
MAEKAWA, Satoshi
SUGANO, Naoki
Application Number:
JP2017/037632
Publication Date:
May 17, 2018
Filing Date:
October 18, 2017
Export Citation:
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Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.) (2-4 Wakinohama-Kaigandori 2-chome, Chuo-ku Kobe-sh, Hyogo 85, 〒6518585, JP)
International Classes:
F15B21/14; E02F9/22; F15B11/044
Foreign References:
JP2014163419A2014-09-08
JPH07257358A1995-10-09
JP2014163419A2014-09-08
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (Osaka Nakanoshima Building 2nd Floor, 2-2 Nakanoshima 2-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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