Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Sealing mechanism of locking clamping jaw wear-resistant hydraulic pump transmission shaft

A technology of a sealing mechanism and a transmission shaft is applied in the sealing field of hydraulic pumps, which can solve the problems that the hydraulic system of the aircraft cannot work normally, the oil leakage of the hydraulic pump transmission shaft exceeds the standard, and the oil leakage is easy to exceed the standard, so as to avoid the failure of the mechanical seal, The effect of increasing the contact area and not easy to wear

Active Publication Date: 2020-11-06
AVIC LIYUAN HYDRAULIC
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The hazards of excessive oil leakage of the hydraulic pump drive shaft: The excessive oil leakage of the hydraulic pump drive shaft may cause the oil in the fuel tank of the aircraft hydraulic system to decrease rapidly, causing the aircraft hydraulic system to fail to work normally; the oil leaked out of the standard A large number of accumulations in the engine compartment will cause catastrophic accidents if exposed to open flames
[0009] Therefore, the existing sealing mechanism of the drive shaft has the disadvantage that the amount of oil leakage is easy to exceed the standard, which may cause the aircraft hydraulic system to fail to work normally and cause catastrophic accidents

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
  • Sealing mechanism of locking clamping jaw wear-resistant hydraulic pump transmission shaft
  • Sealing mechanism of locking clamping jaw wear-resistant hydraulic pump transmission shaft
  • Sealing mechanism of locking clamping jaw wear-resistant hydraulic pump transmission shaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis for limiting the present invention.

[0032] Example. A sealing mechanism for a drive shaft of a hydraulic pump with a wear-resistant stop claw, such as Figure 1 to Figure 6 As shown, the sealing mechanism of the transmission shaft is composed of the transmission shaft 1, the leather cup 2, the rear cover bushing 3, the sixth sealing ring 4, the first sealing ring 5, the second sealing ring 6, the third sealing ring 7, and the pin 9 , Oil leakage pipe joint 10, fourth sealing ring 11, bearing 12, inner shaft 13, toothed ring 15, retaining ring 16, shaft sleeve 17, sealing bush 18, fifth sealing ring 19, gasket 20, mounting seat 21, bolt 22, wave ring 23, back cover 24, pin 25 and other components. The hydraulic pump is fixed on the aircraft accessory casing through the mounting seat 21, and the inner cavity of the mounting seat is fi...

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

PropertyMeasurementUnit
angleaaaaaaaaaa
angleaaaaaaaaaa
Login to View More

Abstract

The invention discloses a sealing mechanism of a locking clamping jaw wear-resistant hydraulic pump transmission shaft. The sealing mechanism of the transmission shaft is provided with a sealing bushing (18) and a rear cover bushing (3). The sealing bushing (18) is provided with notches (28). The rear cover bushing (3) are provided with locking clamping jaws (27) matched with the notches (28). Therear cover bushing (3) is made of martensite stainless steel. The outer diameter of the sealing bushing (18) is greater than or equal to that of the locking clamping jaws (27). The difference value between the outer diameter of the sealing bushing (18) and the outer diameter of the locking clamping jaws (27) is less than or equal to 7 mm. The grade of the martensite stainless steel is 1Cr17Ni2. The sealing mechanism has the advantage that the oil leakage amount is not likely to exceed the standard. The situation that an airplane hydraulic system cannot operate normally and a disastrous accident occurs due to increase of the oil leakage amount can be avoided.

Description

technical field [0001] The invention belongs to the sealing field of a hydraulic pump of an aircraft hydraulic system, and in particular relates to a sealing mechanism of a transmission shaft of a hydraulic pump with a wear-resistant stop claw. Background technique [0002] The sealing mechanism of the transmission shaft of the hydraulic pump of the aircraft hydraulic system usually adopts a structural form combining mechanical seal and sealing ring seal, which is widely used in hydraulic pumps at home and abroad. The mechanical seal includes a sealing bush (also known as a fixed ring) and a toothed ring (also known as a moving ring). Tight, can guarantee a certain sealing effect under the condition of static and relative rotation. [0003] During the working process of the hydraulic pump, the hydraulic oil enters the pump cavity through the gap between the rotor and the plunger, the gap between the oil separator plate and the rotor, the gap between the sliding shoe and the...

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 Applications(China)
IPC IPC(8): F16J15/16F16C35/12F16C33/72F04B53/00
CPCF16J15/16F04B53/00F16C35/12F16C33/723
Inventor 郎鹿余稀梦王兴艳徐荣孙凯
Owner AVIC LIYUAN HYDRAULIC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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