Variable pin pilot valve

A pilot valve and variable technology, applied in the field of machinery, can solve the problems of high cost of use, difficult manufacturing, poor flexibility, etc., and achieve the effects of improving working stability, long service life and simple structure

Active Publication Date: 2008-12-10
ZHEJIANG STRONGER HYDRAULIC
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]The above scheme improves the working performance of the pilot valve to a certain extent, but there are still the following defects: 1. The output oil pressure cannot be adjusted according to the needs, applicable The flexibility is poor, it is difficult to meet the needs of different applications
2. The overall structure is relatively complicated, and the manufacturing is difficult.

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
  • Variable pin pilot valve
  • Variable pin pilot valve
  • Variable pin pilot valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Such as figure 1 with figure 2 As shown, the variable foot pilot valve includes a valve body 1 and two pedals 2 arranged on the top of the valve body 1 , and the middle part of the pedals 2 is hinged on the valve body 1 . On the valve body 1, there are an oil inlet chamber 3 and an oil return chamber 4 communicating with the oil inlet chamber 3, and an upper oil return chamber 41 arranged above the oil return chamber 4, and the upper oil return chamber 41 and the oil return chamber 4 connected. The oil inlet chamber 3 communicates with an oil inlet hole 11 opened on the valve body 1 and four oil outlet holes 5, and the oil return chamber 4 communicates with the oil return hole 6 opened on the valve body 1. A piston rod assembly 8 which is arranged in one-to-one correspondence with the oil outlet hole 5 and can make the oil inlet chamber 3 and the oil outlet hole 5 be connected or cut off is installed inside. Among them, a piston rod assembly 8 is respectively provid...

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 variable-foot pilot valve, pertaining to the field of mechanical technology. The invention is capable of settling the problems of existing variable-foot pilot valves such as poor flexibility, complex structure, difficult fabrication, etc. The variable-foot pilot valve comprises a valve body and a foot pedal arranged on the top of the valve body; the middle part of the foot pedal is hinged with the valve body; an oil inlet cavity and a oil return cavity which is communicated with the oil inlet cavity are arranged on the valve body; a piston rod component is arranged at both ends of the bottom of the foot pedal respectively; the piston rod component is set to correspond with oil holes, and capable of making the oil inlet cavity to communicate with or cut off from the oil holes; when one piston rod component is pressed by the foot pedal, the oil inlet cavity can be communicated with the oil outlet hole corresponding to the piston rod component; a quantity governing mechanism is arranged between the foot pedal and the piston rod component. The invention has the advantages of rational design, simple structure, high operation reliability, easy assembly, long service life, etc.

Description

technical field [0001] The invention relates to the technical field of machinery, in particular to a variable foot pilot valve. Background technique [0002] Pilot valves are widely used in the hydraulic field. In order to improve their working performance and facilitate their production and processing, people have carried out long-term exploration and proposed various improvement schemes. For example, Chinese patent literature discloses a pilot valve [CN200320122465.1], which includes a valve body and a valve core, the valve body is an inseparable one; the valve core is a component type. The switch of the energized circuit of the electromagnetic coil that drives the movement of the spool is normally open. The invention adopts an integral aluminum alloy valve body structure, which is light in weight and has no leakage. Easy to install; the electromagnet circuit adopts the normally open switch form, and it is only energized when it is working, which prevents the coil from b...

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): F16K11/14F16K31/62F16K27/00F16K37/00F15B13/02
Inventor 罗学荣
Owner ZHEJIANG STRONGER HYDRAULIC
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap