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

Hydraulic cylinder for adjusting axial position of piston and cylinder body through spherical surface

A hydraulic cylinder and piston technology, applied in the field of hydraulic cylinders, can solve the problems of hydraulic cylinder power consumption increase, failure, axis position and movement direction inconsistency, etc., to achieve the effect of reducing power consumption, improving use efficiency and reliability

Inactive Publication Date: 2012-05-02
CHINA NAT HEAVY MACHINERY RES INSTCO
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this design, due to the processing, installation errors and operation of the hydraulic cylinder, the axis position of the hydraulic cylinder is inconsistent with the direction of movement, resulting in lateral loads in the hydraulic cylinder during work; the load borne by the hydraulic cylinder does not pass through the hydraulic cylinder. axis, causing the hydraulic cylinder to produce partial load during work (the self-weight of the piston rod of the long hydraulic cylinder may also produce partial load)
The lateral load and partial load caused by the above reasons will increase the power consumption of the hydraulic cylinder, causing the sealing ring between the piston and the cylinder to fail due to lateral force, resulting in oil leakage from the hydraulic cylinder.

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 cylinder for adjusting axial position of piston and cylinder body through spherical surface
  • Hydraulic cylinder for adjusting axial position of piston and cylinder body through spherical surface
  • Hydraulic cylinder for adjusting axial position of piston and cylinder body through spherical surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: see figure 1 and figure 2 , the specific structure of the present invention is: a hydraulic cylinder that adjusts the axial position of the piston and the cylinder body through a spherical surface, including a piston rod 1, a piston 2 with a "concave" cross section, a second sealing ring 4, and a "concave" cross section. The cylinder 5, the guide block 6 and the adjusting ball 7 of the "mountain" shape structure; wherein, the piston rod 1 is connected with the piston 2, and the piston 2 is matched with the cylinder 5; the inner surface of the piston 2 is in clearance fit with the guide block 6 , so that the piston 2 can reciprocate along the outer ring of the guide block 6, the outer surface of the piston 2 is in contact with the second sealing ring 4 installed on the inner groove of the cylinder 5, and the second sealing ring 4 is the main seal to prevent oil leakage The adjustment ball 7 is fixed on the middle protrusion of the cylinder 5, and the ...

Embodiment 2

[0019] see figure 1 and figure 2 , the present invention can also include a fixed sleeve 9, a first bolt 8 and a second bolt 10; the second bolt 10 is fixedly connected to the piston rod 1 and the piston 2 by pressing the fixed sleeve 9 arranged in the piston rod 1, and the fixed There is a certain gap between the sleeve 9 and the piston rod 1; the adjusting ball 7 is fixed on the middle protrusion of the cylinder 5 by the first bolt 8.

[0020] The inside of the cylinder 5 in the present invention can be designed into a special form, and the inner surface cross section of the cylinder 5 is designed as 11 stepped conical surfaces to ensure that the axis of the cylinder 5 and the axis of the piston 2 do not rotate. collide with each other to complete the movement.

Embodiment 3

[0021] Embodiment 3: In order to prevent dust from entering and to further prevent oil leakage, the present invention may also include a first sealing ring 3 arranged outside the second sealing ring 4 for auxiliary sealing. The first sealing ring 3 is installed in the cylinder 5 on the inner groove and in contact with the outer surface of the piston 2.

[0022] Specifically:

[0023] The contact between the piston 2 and the piston rod 1 is a concave spherical structure. The second bolt 10 presses the fixing sleeve 9 to connect the piston rod 1 and the piston 2. After installation, there is a certain gap between the fixing sleeve 9 and the piston rod 1. It can ensure that the axial movement of the piston rod 1 and the piston 2 can deviate from the axis of the hydraulic cylinder; Contact; the cross-section of the cylinder 5 is a "mountain"-shaped structure that matches the piston 2 with a "concave"-shaped structure, and a guide block 6 is installed in the middle (specifically ...

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 cylinder for adjusting the axial position of a piston and a cylinder body through a spherical surface, which is characterized by comprising a piston rod, a piston, a second sealing ring, a cylinder barrel, a guide block and an adjusting ball, wherein the cross section of the piston is in a shape like a Chinese character 'ao', the cross section of the cylinder barrel is in a shape like Chinese character 'shan', the piston rod is connected with the piston, the piston is matched with the cylinder barrel, the surface of the inner side of the piston is in clearance fit with the guide block so that the piston can do reciprocating motion along the excircle of the guide block, the surface of the outer side of the piston is contacted with the second sealing ring arranged in the groove of the inner side of the cylinder barrel, the adjusting ball is fixed at the middle projection part of the cylinder barrel, and the adjusting ball and the incircle of the guide block are in spherical surface contact so that the guide block and the adjusting ball relatively rotate. According to the invention, the power consumption can be reduced, and the utilization efficiency and the reliability are improved.

Description

technical field [0001] The invention relates to a hydraulic cylinder which adjusts the axial positions of a piston and a cylinder body through a spherical surface. Background technique [0002] In a piston-type hydraulic cylinder, the piston moves reciprocatingly along the cylinder barrel under the action of the guide sleeve, and a sealing ring is arranged between the piston and the cylinder barrel to prevent oil leakage. In this design, due to the processing, installation errors and operation of the hydraulic cylinder, the axis position of the hydraulic cylinder is inconsistent with the direction of movement, resulting in lateral loads in the hydraulic cylinder during work; the load borne by the hydraulic cylinder does not pass through the hydraulic cylinder. axis, causing the hydraulic cylinder to produce eccentric loads during work (the self-weight of the long hydraulic cylinder piston rod may also produce eccentric loads). The lateral load and partial load caused by 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
IPC IPC(8): F15B15/14F15B15/20
Inventor 李勇鹏王宇航赵玉良张帆崔冬
Owner CHINA NAT HEAVY MACHINERY RES INSTCO
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