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

Oil pump with inside engaged gear

A gear machine and internal meshing technology, which is applied in the direction of pumps, mechanical equipment, machines/engines, etc., can solve the problems of reducing the working efficiency of the gearbox, abnormal wear of parts, and high friction coefficient of parts, and achieve good low and high speed characteristics, Improved reliability and service life, and high lubrication efficiency

Inactive Publication Date: 2011-04-20
HUNAN OIL PUMP
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The oil pump of the existing construction machinery gearbox lubrication system uses a splash type, drip irrigation type or cycloidal rotor pump and other lubrication methods, the lubrication efficiency is low, the lubrication effect is poor, and the friction coefficient of the parts is high, resulting in abnormal parts wear, reducing the efficiency of the gearbox

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
  • Oil pump with inside engaged gear
  • Oil pump with inside engaged gear
  • Oil pump with inside engaged gear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Such as Figure 1-2 As shown, an internal gear oil pump includes a pump body 1, a pump cover 2, an internal gear 3, an external gear 4, and a transmission shaft 5, and the middle part of the transmission shaft 5 and the external gear 4 are interference-connected and installed with the internal gear 3 as a complete set. In the gear hole and the shaft hole of the pump body 1 and the pump cover 2, there is a crescent-shaped separation plate integrally formed with the pump body 1 in the eccentricity space formed by the outer gear hole and the inner gear hole in the inner cavity of the pump body 1. 6. The isolation plate 6 is not only a channel for the isolation and oil delivery of the lubricating oil in the tooth chambers of the internal gear 3 and the external gear 4, but also an isolation device for blocking the oil outlet chamber and the oil inlet chamber and preventing the return of pressure oil. The isolation plate 6. The inner circular arc line and the top circle of 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 invention relates to an oil pump with an inside engaged gear, which comprises a pump body 1, a pump cover 2, an inside gear 3, an outside gear 4 and a transmission shaft 5. The middle of the transmission shaft 5 is in interference connection with the outside gear 4 and arranged together with the inside gear 3 in the gear hole and axleholes of the pump body 1 and the pump cover 2. A crescent spacer 6, which is not only a channel for separating and transferring lubricating oil in the gear cavities of the inside gear 3 and the outside gear 4, but also an separator for separating the oil outlet cavity from the oil inlet cavity and preventing the pressure oil from backflowing, integrally formed with the pump body 1 is arranged in an eccentricity space formed mutually by the outside and the inside gear holes in the inner cavity of the pump body 1. By adopting the above design, compared with prior art, the invention has the advantages of simple structure, low noise, stable oil transfer, strong self-absorption, high lubricating efficiency, good lubricating effect, good low-high rotating speed characteristic and improves the lubricating efficiency and quality so that the safety, reliability and service life of the oil pump are improved to a great extent.

Description

technical field [0001] The invention relates to an oil pump for a lubricating system of a gear box of construction machinery, in particular to an internal meshing gear oil pump. Background technique [0002] The oil pump of the existing construction machinery gearbox lubrication system uses a splash type, drip irrigation type or cycloidal rotor pump and other lubrication methods, the lubrication efficiency is low, the lubrication effect is poor, and the friction coefficient of the parts is high, resulting in abnormal parts wear, reducing the efficiency of the gearbox. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, and provide an internal meshing gear oil pump with simple structure, stable oil delivery, high lubrication efficiency and good lubrication effect, so as to improve the lubrication efficiency and lubrication quality, and improve the lubrication efficiency of the lubrication ...

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): F04C2/10
Inventor 许仲秋刘光明徐建明
Owner HUNAN OIL PUMP
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