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:
Aug. 29, 2017
Filed:
Jul. 02, 2013
Xcmg Excavator Machinery Co., Ltd, Xuzhou, CN;
Yong Wang, Xuzhou, CN;
Hong Zhang, Xuzhou, CN;
Shengxia Zhang, Xuzhou, CN;
Kai Liu, Xuzhou, CN;
Zong Li, Xuzhou, CN;
Jian Zhang, Xuzhou, CN;
Mingjun Liao, Xuzhou, CN;
Jiasheng Qin, Xuzhou, CN;
Yufeng Yang, Xuzhou, CN;
XCMG EXCAVATOR MACHINERY CO., LTD, Xuzhou, CN;
Abstract
Disclosed is an apparatus for improving excavating operation characteristic and grading operation characteristic of an excavator. The apparatus includes a solenoid valve group and a hydraulically controlled selector valve. An oil controlling output Aof the solenoid valve group is configured in series with oil controlling input aof the hydraulic control valve. An oil controlling output Aof the solenoid valve group is configured in series with a pilot control end XBaof a multi-port valve group. An oil return port Tof the solenoid valve group is connected to the hydraulic oil tank. An oil controlling output bof the hydraulically controlled selector valve is connected to a pilot control end XAbof the multiplexer valve group, and an oil return port Tof the hydraulically controlled selector valve is connected with the hydraulic oil tank. The apparatus improves operational efficiency and control comfortability.