Unlock instant, AI-driven research and patent intelligence for your innovation.

Pulling unit

A pull-sleeve and expansion-sleeve technology, applied in the pull-sleeve field, can solve the problems of unsatisfactory, scrapped cylinder head, difficult interference between valve seat and cylinder head, etc., and achieves the effect of convenient and reliable use and simple structure

Inactive Publication Date: 2008-10-22
刘之增
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Welding can also cause the cylinder head to be scrapped, and it is also difficult to pull the valve seat with steel bars due to the large interference between the valve seat and the cylinder head
In short, the above methods are not ideal

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
  • Pulling unit
  • Pulling unit
  • Pulling unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The accompanying drawing is a puller designed to remove the valve seat of the 16V240 diesel engine cylinder head. According to the design of general mechanical parts, both ends of the inner hole of the valve seat have chamfers, and the bottom surface of the hole in contact with the valve seat also has chamfers. The design principle of the valve seat removal tool is to use the expansion sleeve with a variable outer diameter to tighten the inner surface of the valve seat to take out the valve seat. With reference to the accompanying drawings, the expansion sleeve 10 is milled in 3 equal divisions with a saw blade milling cutter whose outer surface is consistent with the inner hole of the valve seat 3 and the lower chamfer surface, and whose inner surface is consistent with the outer surface of the taper mandrel 9 cones. The springs 4 in their common groove are connected together. Spring 4 can be used steel wire circle extension spring, also available size is suitable O t...

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 pulling unit has one expanding sleeve with outer surface fitting the valve seat and inner surface fitting one conic spindle and cut into three equal parts connected through the springs in the slots, one small pressure plate mounted to one end of the expanding sleeve, one screw sleeve screwed to the stud of the conic spindle, one large pressure plate mounted on the surface of cylinder cover, and one nut with two welded handles mounted on the screw sleeve. After the expanding sleeve is mounted inside the conic spindle and inside the hole of the valve seat and the screw sleeve is turned to press the small pressure plate and make the outer surface of the expanding sleeve contact with the inner surface of the valve seat, the valve seat may be disassembled easily. The pulling unit is simple, convenient and reliable.

Description

Technical field [0001] The invention relates to a mechanical dismantling device, especially a puller. Background technique [0002] Sleeve parts are common mechanical parts, which are installed in the friction and sealing parts of boxes, brackets, cylinder heads and other parts. By replacing the sleeve, the service life of the box body, bracket, cylinder head and other parts can be extended. The sleeve installed in the through hole of the part can be ejected from one end of the hole with a simple tool, and it is easier to disassemble. And when the hole of the mounting cover is blocked, it is just troublesome to remove the cover from the hole. For example, the valve seat of the 16V240 cylinder head is installed in the valve seat hole on the surface of the combustion chamber, and the interference is 0.06-0.08 mm. The cylinder head is a high-value part. When the valve seat is worn to the limit of being unusable, it needs to be replaced with a new one. However, the structure ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B25B27/02B25B27/06
Inventor 刘之增
Owner 刘之增
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com