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

Water hydraulic pump or motor end face distribution type friction pair with dynamic pressure effect

A water hydraulic and friction pair technology, applied in the hydraulic field, can solve the problems affecting the normal use and service life of water hydraulic pumps and motors, being easily corroded and worn, and achieve the effects of high cost performance, improved performance, and reliable performance.

Active Publication Date: 2019-01-11
HANGZHOU DIANZI UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the distribution friction pair works in a water environment (especially in sea water) and is heavily loaded, it is very easy to corrode and wear, which will lead to failure, seriously affecting the normal use and service life of water hydraulic pumps and motors
Experts in related fields at home and abroad have been studying the problems existing in the water hydraulic pump and motor flow distribution friction pair, but the idea of ​​solving the problem is still to seek matching materials that meet the requirements of corrosion resistance, wear resistance and self-lubricating properties. These new materials Although good results have been achieved in terms of wear resistance, drag reduction and lubrication of friction pairs, how to further improve the lubricating capacity, load-bearing characteristics, friction and wear performance and life of water hydraulic pumps or motor distribution friction pairs is still a problem to be solved

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
  • Water hydraulic pump or motor end face distribution type friction pair with dynamic pressure effect
  • Water hydraulic pump or motor end face distribution type friction pair with dynamic pressure effect
  • Water hydraulic pump or motor end face distribution type friction pair with dynamic pressure effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as Figure 4 As shown, the dynamic pressure support grooves are only arranged equidistantly on two circles concentric with the circumference of the axial hole flow channel and arranged on both sides of the circumference of the axial hole flow channel. The number of dynamic pressure support grooves on the circumference of both sides Equal; in the circumferential direction, the dynamic pressure support groove is arranged between the adjacent axial hole flow channels; the dynamic pressure support groove is diamond-shaped on the plane parallel to the friction surface; the angle between the side wall of the dynamic pressure support groove and the friction surface The value is taken within 30-90°, and the value is 90° in this embodiment; the area of ​​the dynamic pressure support groove on the friction surface is 3mm 2 .

Embodiment 2

[0043] Such as Figure 5 As shown, the dynamic pressure support grooves are only arranged equidistantly on two circles concentric with the circumference of the axial hole flow channel and arranged on both sides of the circumference of the axial hole flow channel. The number of dynamic pressure support grooves on the circumference of both sides equal; in the circumferential direction, the dynamic pressure support groove is arranged between the adjacent axial hole flow channels; the dynamic pressure support groove is rectangular on the plane parallel to the friction surface; the bottom of the dynamic pressure support groove is in the circumferential direction with the friction The included angle k of the surface is 0-30°, when k≠0, the bottom of the dynamic pressure support groove intersects with the friction surface; in this embodiment, k=30°; the area of ​​the dynamic pressure support groove on the friction surface is 3mm 2 .

Embodiment 3

[0045] Such as Figure 6 As shown, the dynamic pressure support grooves are only arranged equidistantly on two circles concentric with the circumference of the axial hole flow channel and arranged on both sides of the circumference of the axial hole flow channel. The number of dynamic pressure support grooves on the circumference of both sides equal; in the circumferential direction, the dynamic pressure support groove is set between the adjacent axial hole flow channels; the dynamic pressure support groove is a regular hexagon on the plane parallel to the friction surface; the side wall of the dynamic pressure support groove and the friction surface The included angle takes a value within 30-90°, and the value in this embodiment is 90°; the area of ​​the dynamic pressure support groove on the friction surface is 3mm 2 .

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 discloses an end face flow-distribution type friction pair, which has a dynamic pressure effect, of a water hydraulic pump or a motor. Further improving and increasing the lubricating ability, the bearing characteristics, the friction and wear properties and the life of the conventional flow-distribution type friction pair of the water hydraulic pump or the motor is of great significance. The end face flow-distribution type friction pair is characterized in that a plurality of concave pits are formed in either a friction surface of a flow-distribution body or a friction surface of a rotor body, and a plurality of dynamic pressure support grooves are formed in the other friction surface; the concave pits are distributed in a plurality of peripheries taking the center of the friction surface as the circle center and equally dividing the friction surface; the area of the concave pits in the friction surface is 3mm<2>; the greatest depth of the dynamic pressure support grooves is 0.1-3mm; the area of the dynamic pressure support grooves in the friction surface is 1-12mm<2>; and the distribution mode of the dynamic pressure support grooves adopts a bionic structure. The bionic structure is constructed on the friction surface of the flow-distribution body or the rotor body, the lubricating ability, and the lubricating ability, the bearing characteristics, and the friction and wear properties of the end face flow-distribution type friction pair are improved.

Description

technical field [0001] The invention belongs to the technical field of hydraulic pressure, relates to a water hydraulic pump or a motor, and in particular relates to a novel friction pair of a distribution body / rotor body based on a dynamic pressure support. Background technique [0002] The water hydraulic pump or motor is a water hydraulic power element (actuator) that uses fresh water or sea water as the working medium and can convert mechanical energy (hydraulic energy) into hydraulic energy (mechanical energy) to achieve continuous rotary motion. It plays a role in the water hydraulic system. important role. The distribution friction pair composed of the distribution body and the rotor body is one of the key friction pairs in the water hydraulic pump or motor distribution friction pair. The distribution body is a disc with a central through hole, and an axial hole flow channel coaxial with the central through hole is provided on the friction surface between the central...

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): F03C2/00F04C15/00
CPCF03C2/00F04C15/00F04C15/0088F04C2240/20F04C2240/80
Inventor 王志强孙雨晴倪敬
Owner HANGZHOU DIANZI UNIV