Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Combined type flow valve for liquid of high-pressure large-flow alternating current servo direct-drive machine

An AC servo, high-flow technology, applied in the field of hydraulic valves, can solve problems such as oil pollution sensitivity, and achieve the effects of simple use, large flow, and simple overall structure

Inactive Publication Date: 2012-08-15
XI AN JIAOTONG UNIV
View PDF8 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a high-pressure and large-flow AC servo direct-drive machine-hydraulic composite flow valve, which can rea

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Combined type flow valve for liquid of high-pressure large-flow alternating current servo direct-drive machine
  • Combined type flow valve for liquid of high-pressure large-flow alternating current servo direct-drive machine
  • Combined type flow valve for liquid of high-pressure large-flow alternating current servo direct-drive machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] refer to figure 1 , a high-pressure and large-flow AC servo direct-drive machine-hydraulic compound flow valve, including a valve seat 1, a valve core 2, a valve sleeve 3, a lower end cover 4, a threaded sleeve 5, an input shaft 6, a key 7, a coupling 8, Harmonic reducer 9, upper end cover 10, AC servo motor 11, harmonic reducer 9 is installed in the upper end cover 10 through screws, the output shaft of AC servo motor 11 and the input end of harmonic reducer 9 pass through coupling 8 connection, the output end of the harmonic reducer 9 is connected with the input shaft 6 by screws, and the input shaft 6 drives the threaded sleeve 5 through the thread, and the two keys 7 are respectively installed in the key grooves on both sides of the threaded sleeve 5, and inserted into the lower end cover 4 correspondingly At the same time, the push rod part of the thread...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a combined type flow valve for liquid of a high-pressure large-flow alternating current servo direct-drive machine. An alternating current servo motor drives a push rod through the transmission of a thread and the push rod acts on a hydraulic transmission cavity which is sealed with hydraulic oil; when the push rod moves, the inner volume of the hydraulic transmission cavity is changed and a valve core moves to the same side to compensate the change of the volume, so that the movement of the valve core is controlled through controlling the movement of the push rod. The valve has the advantages of simple structure, accurate control and convenience for use, can directly use a computer to carry out digital control, has good buffering and positioning performances, can meet the requirements of positioning any point, can realize a closed ring system of electric feedback, and especially can be used for better solving the problem that the previous servo valve is sensitive to oil liquid pollution. The valve is wide in working pressure range and large in flow and can work under a very low oil supply pressure, and the dynamic performance is not greatly influenced by the low oil supply pressure; and the valve has fewer middle transmission links so that the efficiency of the system can be improved.

Description

technical field [0001] The invention belongs to the technical field of hydraulic valves, in particular to a high-pressure and large-flow AC servo direct-drive machine-hydraulic composite flow valve. Background technique [0002] The electro-hydraulic servo valve is a complex electro-hydraulic component. In the electro-hydraulic servo system, as a bridge connecting the electrical part and the hydraulic part, it is the core component of the electro-hydraulic servo control system. In recent years, with the rapid development of large-scale hydraulic equipment such as die-casting machines, the market demand for electro-hydraulic servo systems, especially electro-hydraulic servo valves, has increased, and higher technical requirements have been put forward for them. The widely used electro-hydraulic proportional throttle valves are mainly two-stage or three-stage nozzle flapper valves and jet pipe valves with pilot valves. Although the traditional hydraulic servo system has excell...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F15B13/02
Inventor 赵升吨李磊张琦范淑琴
Owner XI AN JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com