Dedicated core of multipath hydraulic control main body valve for manufacturing heavy duty excavator

An excavator and mud core technology, which is applied in the field of special mud cores, can solve problems such as high dimensional accuracy requirements, complex internal structures of hydraulic castings, and no literature reports on valve bodies, and achieve the effect of improving combination accuracy

Active Publication Date: 2013-08-28
南通华东油压科技有限公司
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] (1) The internal structure of the hydraulic casting is complex, which is a multi-layer and multi-channel structure, and requires high dimensional accuracy. Therefore, the technical difficulties to be overcome: the core parting process, the combined positioning proces

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
  • Dedicated core of multipath hydraulic control main body valve for manufacturing heavy duty excavator
  • Dedicated core of multipath hydraulic control main body valve for manufacturing heavy duty excavator
  • Dedicated core of multipath hydraulic control main body valve for manufacturing heavy duty excavator

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] The mud core of the present invention is a ZYW-J28-2-1 valve body which is a special mud core for a multi-channel control valve body for a 20-ton excavator.

[0027] Such as figure 1 , 2 As shown in, 3 and 4, the main body valve mud core is three-layer multi-channel. The mud core 1 of the upper main body valve is integrally formed from the sheet mud core 2 through the strip core head 3 according to the casting flow channel distribution structure, and then mutually positioned by the core head 3; the core heads 3 are connected end to end to form a square structure.

[0028] The details are as follows: The structure of the sheet-shaped mud core 2 is: five main mud cores 4 and a branch flow channel 5 between the main mud cores 4 are connected. The strip core 3 is a long strip, surrounds the outer edge of the main mud core 4, surrounds it in a square in the circumferential direction, and is connected and positioned at the end of the mud core inside to form a whole. Such as figur...

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 present invention discloses a dedicated core of a multipath hydraulic control main body valve for manufacturing a heavy duty excavator. The main body valve dedicated core is three layers of multipath. The main body valve core is integrally molded by a sheet core through a strip shaped core head as a casting flow path distribution structure, and then mutually positioned through the core head. The strip shaped core heads are connected end to end to form a square structure. An intermediate layer main body valve core is of a long strip shaped core. A bottom layer main body valve core is of three c-type supports parallelly distributed on an upper layer main body valve square structure. The sheet core is formed integrally by the strip core head, and then mutually positioned by the core head. The combination accuracy of the core is improved. The problems that the core is needed to be assembled by core-shell or using tooling previously, efficiency is low and loss of the core is relatively large in the process of core carrying and core drying are solved.

Description

Technical field [0001] The invention relates to a special mud core for a multi-channel hydraulic control main valve of a heavy excavator, in particular to a special mud core for a multi-channel hydraulic control main valve with high precision and multiple flow channels. Background technique [0002] The invention relates to a ZYW-J28-2-1 valve body. It is the main valve body of multi-channel hydraulic control on a 20-ton excavator. It is a key research and development project of heavy equipment units and is also one of the key research projects in hydraulic technology by the country. [0003] The ZYW-J28-2-1 valve body is a 20-ton multi-channel control valve body for excavation. Its structure and function are equivalent to the fifth-generation valve body produced by Japan’s Kawasaki Company. It is more complex than its structure and has superior performance. The core component of the machine. [0004] 1. The main index parameters and research content of the valve body [0005] 1. Ma...

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): B22C9/10
Inventor 曹建军孙小军张龙楼范伟伟
Owner 南通华东油压科技有限公司
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