Hydraulic center rotary joint

A central rotary joint, hydraulic technology, applied in the direction of load hanging components, earthmovers/shovels, construction, etc., can solve problems such as oil circuit obstruction, influence of rotary body and rotary shaft, and easy leakage of rotary joint oil. , to achieve the effect of reducing labor intensity, improving applicability and ensuring performance

Inactive Publication Date: 2013-04-24
JIANGSU CHANGLING HYDRAULIC CO LTD
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the sealing performance between the rotary joint and the outside world in the past is poor, and the dust from the outside is easy to get into the rotary joint, which affects the performance of the rotary joint, and the oil in the rotary joint is also easy to leak out. The rotation also has an impact, requiring frequent oiling, which increases the labor intensity of the workers
[0004] Moreover, after the conven

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
  • Hydraulic center rotary joint
  • Hydraulic center rotary joint
  • Hydraulic center rotary joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] see Figure 1 to Figure 5 , the present invention relates to a hydraulic central rotary joint, comprising a rotary body 1 and a rotary shaft 2, the lower end of the rotary shaft 2 is axially inserted into the rotary body 1 from the upper end of the rotary body 1, and the upper end of the rotary shaft 2 is exposed to the rotary shaft body 1, a water sealing ring 3 is provided between the upper end of the rotating body 1 and the rotating shaft 2, the water sealing ring 3 is used to prevent gas from leaking or entering, the lower end of the rotating shaft 2 and the lower end of the rotating body 1 Horizontally aligned, the lower end of the revolving body 1 is provided with an end cover 4, and the end cover 4 is fixed on the lower end of the revolving body 1 through bolts 5 and flat washers 6, and the lower end of the revolving body 1 and the end cover 4 are provided with O-ring I7, a retaining ring 8 and a shaft elastic retaining ring 9 are provided between the lower end o...

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 a hydraulic center rotary joint characterized in that the lower end of a rotary shaft (2) is axially inserted into a rotary body (1) from the upper end of the rotary body (1), seven main oil-way holes and a center oil drainage hole are axially formed in the rotary shaft (2), seven main oil ports are radially formed in the rotary body (1) to be correspondingly communicated with the seven main oil-way holes in the rotary shaft (2), a dustproof ring (12) is arranged in a circular groove between the rotary body (1) and the rotary shaft (2), an upper lip and a lower lip (12.1) are arranged on one side of the dustproof ring (12) contacting with the rotary shaft (2) to form double lips, and the upper lip and the lower lip (12.1) are attached to the outer wall of the rotary shaft (2). According to the hydraulic center rotary joint, dust is not prone to entering, oil is not prone to leakage, fixed parts of a hydraulic system and a circuit can rotate 360 degrees relative to rotary parts. Besides, the upper portions and the lower portions of oil-ways are communicated, and the oil-ways and the circuit are not connected in serial.

Description

technical field [0001] The invention relates to a hydraulic central rotary joint, which is mainly used in hydraulic systems of large-tonnage excavators, cranes, graders, tower cranes and other machinery, and is a hydraulic pipeline and circuit connecting the fixed part and the rotating part of the entire hydraulic system and circuit The connector belongs to the technical field of engineering machinery. Background technique [0002] For hydraulic excavators, cranes, loaders, etc., the upper and lower parts need to be rotated, so there is a problem of connecting the oil circuit and the circuit between the rotating part and the fixed part. The hydraulic central rotary joint is composed of a rotary body, a rotary shaft and a cover. When in use, the revolving body is fixed to the revolving lower platform of hydraulic excavators and cranes, and the mounting plate on the revolving shaft is connected with the slewing support on the revolving upper platform. Hydraulic rubber hoses ...

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): E02F9/22B66C13/12
Inventor 夏泽民张爱军陈酉冰潘逸明高海波朱江华
Owner JIANGSU CHANGLING HYDRAULIC CO LTD
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