HYDRAULIC DRIVE SYSTEM FOR OPERATING TABLE - NANJING MINDRAY BIO MEDICAL ELECTRONICS CO LTD

Title:

HYDRAULIC DRIVE SYSTEM FOR OPERATING TABLE

Document Type and Number:

WIPO Patent Application WO/2016/061797

Kind Code:

A1

Abstract:

A hydraulic drive system for an operating table, the system comprising an oil supplying device for providing hydraulic oil, an oil returning device and an oil returning circuit assembly; the oil returning circuit assembly comprises two oil cylinders (261, 262), two reversing valve assemblies and two two-way hydraulic locks; a rodless cavity (2611, 2621) of each oil cylinder is connected to a working interface of the reversing valve assembly via a first oil path (31), and a rod cavity (2612, 2622) of each oil cylinder is connected to another working interface of the reversing valve assembly via a second oil path (32); an oil returning opening of each reversing valve assembly is connected to the oil returning device via an oil returning path (30); the oil returning path (30) is provided with an on-off control valve thereon; and the first oil path (31) and the second oil path (32) are subject to two-way on-off control via the two-way hydraulic lock. The system enables piston rods of the two oil cylinders (261, 262) to move independently and to move synchronously, thus simplifying a system structure, providing reliability and reducing cost.

Inventors:

DENG QIANGQUAN (CN)

Application Number:

PCT/CN2014/089339

Publication Date:

April 28, 2016

Filing Date:

October 23, 2014

Export Citation:

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Assignee:

NANJING MINDRAY BIO MEDICAL ELECTRONICS CO LTD (CN)

International Classes:

F15B11/00; A61G13/10

Foreign References:

CN203627352U	2014-06-04
CN1817322A	2006-08-16
CN102705275A	2012-10-03
CN203604293U	2014-05-21
CN203614480U	2014-05-28
EP1161929A2	2001-12-12
US20050198737A1	2005-09-15

Other References: