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

Magnetorheological fluid continuously variable transmission

A technology of continuously variable transmission and magneto-rheological fluid, which is applied to friction transmission devices, belts/chains/gears, mechanical equipment, etc., and can solve problems such as the inability to control the speed of the transmission shaft, the inability to realize stepless speed change, and the large volume of circuit settings, etc. problem, to achieve the effect of good speed control, simple structure and small size

Inactive Publication Date: 2012-10-17
CHINA UNIV OF MINING & TECH
View PDF10 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic patent CN101793312A discloses a multi-disk magneto-rheological stepless transmission, which uses the magneto-rheological fluid in the gap between the active friction plate and the driven friction plate to transmit torque. It has a reasonable structure and high transmission power, but it cannot control the transmission. The rotational speed output by the shaft is arbitrary and blind, and cannot realize stepless speed change in the true sense
The patent number is ZL201120203829.3, and the name is a controllable continuously variable transmission system based on magnetorheological fluid. Although it solves the above problems well, its circuit configuration is large in size, high in cost, difficult to maintain, and its precision has certain limitations and is therefore greatly restricted in industrial applications

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
  • Magnetorheological fluid continuously variable transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The present invention will be further described below with reference to the accompanying drawings.

[0010] like figure 1 As shown, the present invention includes a magnetorheological fluid transmission device 1 and a rotational speed adjusting circuit, characterized in that, the rotational speed adjusting circuit includes a rotational speed sensor 2, an excitation coil 3, a voltage amplifier 4, a speed regulating resistor R 1 , divider resistor R 2 , current limiting resistor R 3 , resistance R 4 , resistance R 5 , filter capacitor C 1 , negative feedback capacitor C 2 , Positive feedback capacitor C 3 , transistor Q 1 , Darlington transistor Q 2 , freewheeling diode D 1 , Zener diode ZD 1 , switch SW and DC power supply BAT, the speed sensor 2 and the excitation coil 3 are arranged outside the magnetorheological fluid transmission device 1, one end of the speed sensor 2 is grounded, and the other end is connected to the positive-phase signal input end of the...

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 a magnetorheological fluid continuously variable transmission and belongs to the technical field of transmissions. The magnetorheological fluid continuously variable transmission comprises a magnetorheological fluid transmission device and a rotation speed adjusting circuit; and the rotation speed adjusting circuit comprises a rotation speed sensor, a magnet exciting coil, a voltage amplifier, a speed adjusting resistor R1, a resistive divider R2, a current limiting resistor R3, a resistor R4, a resistor R5, a filter capacitor C1, a negative feedback capacitor C2, a positive feedback capacitor C3, a transistor Q1, a Darlington transistor Q2, a fly-wheel diode D1, a voltage-regulator diode ZD1, a switch SW and a direct current power supply BAT. The magnetorheological fluid continuously variable transmission has the advantages of simple structure, small size, high reliability, strong stability, good effect of controlling rotation speed and high accuracy.

Description

technical field [0001] The invention relates to a continuously variable transmission, in particular to a magnetorheological fluid continuously variable transmission, which belongs to the technical field of transmissions. Background technique [0002] Magnetorheological fluid is a new type of smart material. Under the action of an external magnetic field, its rheological properties will change rapidly, and its viscosity can increase in a short time (millisecond level), and it will change from a liquid with good rheological properties to a liquid. It is similar to a solid state, and will return to a flowable liquid once the external magnetic field is lost. In recent years, due to its superior rheological properties, it has been used in soft start, clutch, brake, sealing and shock absorption, and has also begun to develop in the field of stepless speed regulation. US Patent US005779013, Torque transfer apparatus using magneto rheological fluids The transmission medium realize...

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): F16H15/01
Inventor 刘新华刘友会刘浩刘永志路和刘秀梅
Owner CHINA UNIV OF MINING & TECH
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