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:
Feb. 18, 2025
Filed:
Nov. 23, 2023
Xuzhou Xcmg Excavator Machinery Co., Ltd., Jiangsu, CN;
Yuzhong Dong, Jiangsu, CN;
Yunbo Xiao, Jiangsu, CN;
Yuefeng Jin, Jiangsu, CN;
Heng Miao, Jiangsu, CN;
Jinhui Huang, Jiangsu, CN;
Shangjun Nan, Jiangsu, CN;
Xinkui Zhang, Jiangsu, CN;
Jishen Lin, Jiangsu, CN;
Xiaodong Li, Jiangsu, CN;
Xuzhou XCMG Excavator Machinery Co., Ltd., Jiangsu, CN;
Abstract
Disclosed are a hydraulic control system for boom floating of an excavator and a control method thereof. In the hydraulic circuit, a main pump supplies oil to the boom cylinder through a boom reversing valve, and two working ports of the boom reversing valve are connected to a rod cavity and a rodless cavity of the boom cylinder respectively. A rod cavity floating valve and a rodless cavity floating valve are connected to an oil circuit between the rod cavity of the boom cylinder and the boom reversing valve and an oil circuit between the rodless cavity of the boom cylinder and the boom reversing valve respectively. A pilot oil pump and a handle pilot valve are arranged on the pilot oil circuit, an oil inlet of the handle pilot valve is connected to the pilot oil pump.