The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 14, 2019
Filed:
Aug. 13, 2014
Xuzhou Xugong Excavator Machinery Co., Ltd, Xuzhou, CN;
Zhenxing Wang, Xuzhou, CN;
Zong Li, Xuzhou, CN;
Jiasheng Qin, Xuzhou, CN;
Shuhui Fei, Xuzhou, CN;
Jijiang Shi, Xuzhou, CN;
Jianchang Gao, Xuzhou, CN;
Benqiang Sun, Xuzhou, CN;
Zhipeng Li, Xuzhou, CN;
Yang Zheng, Xuzhou, CN;
XUZHOU XUGONG EXCAVATOR MACHINERY CO., LTD, Xuzhou, CN;
Abstract
A rotatory energy recycling control device for a hydraulic excavator, comprising: an oil line selector valve (), a direction selector valve (), a sequencing valve (), a one-way valve () and an overflow valve (); two oil inlets of the oil line selector valve () are respectively connected to an opening A and an opening B of a rotary motor; an oil outlet of the oil line selector valve () is connected to an inlet of the direction selector valve (); an outlet of the direction selector valve () is connected to an net of the sequencing valve (); a drainage port of the sequencing valve () is connected to an oil tank; an outlet of the sequencing valve () and an net of the one-way valve () communicate with the overflow valve (): the outlet of the one-way valve () is connected to an energy storage and utilization device; and an outlet of the overflow valve () is connected to the oil tank. One device can simultaneously achieve energy recycling from rotatory start and deceleration braking with fewer components and simplified piping designs.