CN202152836U - Controllable stepless speed change system based on magnetorheological fluid - Google Patents
Controllable stepless speed change system based on magnetorheological fluid Download PDFInfo
- Publication number
- CN202152836U CN202152836U CN2011202038293U CN201120203829U CN202152836U CN 202152836 U CN202152836 U CN 202152836U CN 2011202038293 U CN2011202038293 U CN 2011202038293U CN 201120203829 U CN201120203829 U CN 201120203829U CN 202152836 U CN202152836 U CN 202152836U
- Authority
- CN
- China
- Prior art keywords
- friction plate
- driven
- driving
- box body
- driven shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 30
- 230000005389 magnetism Effects 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims description 11
- 238000002955 isolation Methods 0.000 claims description 10
- 230000005284 excitation Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010892 electric spark Methods 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Friction Gearing (AREA)
Abstract
A controllable stepless speed change system based on magnetorheological fluid comprises a driving shaft, a driven shaft, a magnetism separating hub, a driven friction sheet and a driving friction sheet. The driving friction sheet is fixed on a friction sheet magnetism separating ring, a magnet exciting coil is arranged on the periphery of the friction sheet magnetism separating ring, the driving shaft and the driven shaft are fixed between an upper box body and a lower box body which are clamped with each other through a driving shaft bearing and a driven shaft bearing respectively, the magnet exciting coil is arranged in a groove of the upper box body and the lower box body, two outer joints of the magnet exciting coil are connected to a direct current voltage regulator through a current-limiting resistor R, a rotation speed sensor is arranged on the outside of the driven shaft and connected with a voltage amplifier which is connected with a potentiometer, the voltage amplifier is connected with a power amplifier in series, the power amplifier is connected with a servo motor which is connected with the direct current voltage regulator through a transmission. Current intensity can be changed by changing voltage so as to change magnetic field intensity, so that stepless change of rotation speed of the output shaft is achieved. The controllable stepless speed change system is simple in structure, strong in stability and good in using effect.
Description
Technical Field
The utility model relates to a stepless speed change system, especially a controllable stepless speed change system based on magnetorheological suspensions of transmission big torque.
Background
The magnetorheological fluid is used as an intelligent material, the rheological property of the magnetorheological fluid is changed rapidly under the action of an external magnetic field, the viscosity of the liquid with good rheological property is increased in a short time within millisecond level, the liquid is in a solid-like state, and the magnetorheological fluid is restored into flowable liquid once the magnetic field is lost. In recent years, due to the excellent rheological property, the soft start and the shock absorption have been applied to a certain extent, and the stepless speed regulation field is developed. U.S. Pat. No. 3,983,9013, Torque transfer apparatus using magnetorheological fluids, discloses a multi-disc Torque transmission apparatus, having magnetorheological fluids in a plurality of disc radial gaps participating in power transmission, and capable of transmitting larger Torque. Domestic patent CN1523251A discloses a magnetorheological continuously variable transmission with a V-shaped rotor structure, which adopts a double-V structure and has a simple structure. Domestic patent CN101793312A discloses a multi-disc type magneto-rheological continuously variable transmission, which utilizes magneto-rheological fluid in the gap between a driving friction plate and a driven friction plate to transmit torque, can change output speed by adjusting the magnitude of current, but can not control the output speed, has randomness and blindness, and can not realize real continuously variable transmission. Along with the increase of the working time, the temperature of the magnetorheological fluid medium is increased, the stability is reduced, and in addition, the performance of the magnetorheological fluid is influenced by other accidental factors, so that the output speed of the magnetorheological fluid is changed randomly in an unknown range, the stability is poor, and the industrial application is greatly limited.
Disclosure of Invention
The technical problem is as follows: the utility model aims to overcome the weak point among the prior art, provide a simple structure, stability is strong, effectual controllable infinitely variable system based on magnetorheological suspensions.
The technical scheme is as follows: the utility model discloses a controllable stepless speed change system based on magnetorheological suspensions, including the driving shaft, with the driving shaft on the same axis driven shaft, the driven shaft is equipped with magnetism-isolating wheel hub, magnetism-isolating wheel hub is equipped with driven friction disc, with the driven friction disc of driven friction disc looks interfit initiative friction disc, the sealed magnetorheological suspensions in the clearance of initiative friction disc and driven friction disc, initiative friction disc is fixed on the friction disc magnetism-isolating ring, the periphery of friction disc magnetism-isolating ring is equipped with excitation coil, driving shaft and driven shaft respectively through driving shaft bearing and driven shaft outer bearing fix between the upper and lower box of looks lock, the excitation coil is established in the recess of upper and lower box, the left side of driving, driven friction disc is equipped with the left magnetism-isolating curb plate that fixes respectively on the left side of driving shaft and friction disc magnetism-isolating ring, the right side of driving, driven friction disc is equipped, a driven shaft inner bearing is arranged between the right magnetism isolating bearing seat and the driven shaft, a driving shaft sealing cover and a driven shaft sealing cover which are fixed on an upper box body and a lower box body are respectively arranged on the driving shaft and the driven shaft, two outer joints of the excitation coil are connected with a direct current voltage regulator through a current limiting resistor R, a rotating speed sensor is arranged on the driven shaft, a voltage amplifier is connected onto the rotating speed sensor, a potentiometer is connected onto the voltage amplifier, a power amplifier is connected onto the voltage amplifier in series, a servo motor is connected onto the power amplifier, and the servo motor is connected with the direct current voltage regulator.
Has the advantages that: by adopting the technical scheme, the magnetorheological fluid is used as a power transmission medium, the current intensity is changed by changing the voltage so as to change the magnetic field intensity, and further the viscosity and the yield stress of the magnetorheological fluid are changed, so that the stepless change of the rotating speed of the output shaft is realized. The stepless speed change in the true sense is realized, and the output speed of the stepless speed change can be freely adjusted between the minimum value and the maximum value. Through controlling the output rotating speed of the driven shaft, the stability of the output rotating speed is improved. The excitation coil does not need electric brush equipment, does not have electric spark, and can be suitable for occasions with isolation requirements on the electric spark, such as underground coal mines and plants floating with combustible dust. The novel multifunctional electric heating cooker is simple in structure, strong in stability, good in using effect and wide in practicability.
Drawings
Fig. 1 is a structural diagram of the magnetorheological fluid stepless speed change system of the utility model.
In fig. 1: the device comprises a rotating speed sensor 1, a potentiometer 2, a voltage amplifier 3, a power amplifier 4, a servo motor 5, a speed changer 6, a direct current voltage regulator 7 and a magnetorheological fluid transmission device 8.
Fig. 2 is a structural diagram of the magnetorheological fluid transmission device of the utility model.
In fig. 2: 8-1 driving shaft, 8-2 driving shaft elastic check ring, 8-3 driving shaft bearing, 8-4 driving shaft sealing cover, 8-5 upper box body, 8-6 left magnetic isolation side plate, 8-7 friction plate magnetic isolation ring, 8-8 driving friction plate, 8-9 driven friction plate, 8-10 right magnetic isolation bearing seat, 8-11 flat key, 8-12 driven shaft outer bearing, 8-13 driven shaft elastic check ring, 8-14 driven shaft, 8-15 driven shaft sealing cover, 8-16 driven shaft inner bearing, 8-17 magnetic isolation wheel hub, 8-18 lower box body, 8-19 magnet exciting coil, 8-20 sealing ring, 8-21 magnetorheological fluid, 8-22OAnd 8-23, fixing the circular plate.
Detailed Description
An embodiment of the present invention is further described below with reference to the drawings:
as shown in fig. 1, the magnetorheological fluid-based controllable stepless speed change system of the present invention mainly comprises a magnetorheological fluid transmission device 8 and a feedback control loop connected to the magnetorheological fluid transmission device 8. The magnetorheological fluid transmission device 8 comprises a driving shaft 8-1 and a driven shaft 8-14 which is on the same axis with the driving shaft 8-1, a magnetism isolating hub 8-17 is arranged on the driven shaft 8-14, a driven friction plate 8-9 is arranged on the magnetism isolating hub 8-17, a driving friction plate 8-8 is inserted with the driven friction plate 8-9, magnetorheological fluid 8-21 is sealed in the gap between the driving friction plate 8-8 and the driven friction plate 8-9, the driving friction plate 8-8 is fixed on a friction plate magnetism isolating ring 8-7, an excitation coil 8-19 is arranged at the periphery of the friction plate magnetism isolating ring 8-7, the driving shaft 8-1 and the driven shaft 8-14 are respectively fixed on an upper box body 8-5, a lower box body 8-5 and a lower box body through a driving shaft bearing 8-3 and a, 8-18, the magnet exciting coil 8-19 is arranged in the groove of the upper and lower box bodies 8-5 and 8-18, and the left sides of the driving and driven friction plates 8-8 and 8-9 are respectively provided withA left magnetism isolating side plate 8-6 fixed on the left side of a driving shaft 8-1 and a friction plate magnetism isolating ring 8-7, right sides of the driving and driven friction plates 8-8, 8-9 are provided with a right magnetism isolating bearing seat 8-10 fixed on the right side of the friction plate magnetism isolating ring 8-7, a driven shaft inner bearing 8-16 is arranged between the right magnetism isolating bearing seat 8-10 and the driven shaft 8-14, the outer sides of the driving shaft 8-1 and the driven shaft 8-14 are respectively provided with a driving shaft sealing cover 8-4 and a driven shaft sealing cover 8-15 fixed on an upper box body 8-5 and a lower box body 8-18, two ends of the driving shaft bearing 8-3 and a driven shaft outer bearing 8-12 are respectively provided with a driving shaft elastic check ring 8-2 and a driven shaft elastic check ring 8-13, magnetism isolating wheel hubs 8-17 are matched, two ends of a friction plate magnetism isolating ring 8-7 are provided with sealing rings 8-20 respectively jointed with a left magnetism isolating side plate 8-6 and a right magnetism isolating bearing seat 8-10, two ends of a magnetism isolating wheel hub 8-17 are provided with sealing rings respectively jointed with the left magnetism isolating side plate 8-6 and the right magnetism isolating bearing seat 8-10OThe left end of the magnetic isolation hub 8-17 is fixed on the driving shaft 8-1 through a fixed circular plate 8-23 by a shaped seal ring 8-22. And a feedback control loop connected with the magnetorheological fluid transmission device 8 sequentially consists of a rotating speed sensor 1, a potentiometer 2, a voltage amplifier 3, a power amplifier 4, a servo motor 5, a gearbox 6 and a direct current voltage regulator 7. The rotating speed sensor 1 is arranged on the outer side of the driven shafts 8-14, the rotating speed sensor 1 is connected with the voltage amplifier 3, the voltage amplifier 3 is connected with the potentiometer 2, the voltage amplifier 3 is connected with the power amplifier 4 in series, the power amplifier 4 is connected with the servo motor 5, and the servo motor 5 is connected with the direct current voltage regulator 7 through the transmission 6. Two external connectors of the magnet exciting coils 8-19 of the magnetorheological fluid transmission device 8 are connected with the direct current voltage regulator 7 through the current limiting resistor R, so that the stepless speed regulation control of the magnetorheological fluid transmission device 8 is realized.
During operation, the rotation speed of the driven shafts 8-14nBy means of a potentiometer 2 with voltage signalsu r Given the form of the voltageu r With desired speed of rotationnWith a defined functional relationship, i.e.u r =f(n)The specific functional relationship is determined by the parameters of the rotation speed sensor 1. The actual rotational speed of the driven shafts 8 to 14 is detected by the rotational speed sensor 1 and converted into a voltage signalu f Driven by the shafts 8-14 under the action of disturbance or under the influence of the temperature change of the magnetorheological fluid 8-21The actual rotating speed deviates from the given rotating speed, at the moment, the given signal and the feedback signal are comprehensively compared by the comparison element to determine whether deviation exists or not and the direction of the deviation, the deviation signal is amplified by the voltage amplifier 3 and the power amplifier 4 and drives the servo motor 5 to work, the servo motor 5 changes the output voltage U by adjusting a contact of the direct current voltage regulator 7 after the speed of the speed changer 6 is changed, so that the current size is changed, the magnetic field size of the magnet exciting coil is changed, the viscosity and the yield stress of the magnetorheological fluid are finally changed, and the rotating speed of the driven shaft can be changed. The current limiting resistor R functions to limit the magnitude of current in the circuit. Wherein,μ f =μ r when the temperature of the water is higher than the set temperature,Δμ=μ r -μ f =0, the contact of the direct current voltage regulator 7 is stationary;μ f when the speed is reduced, i.e. the output speed is reduced,Δμ=μ r -μ f if the voltage is more than 0, the output voltage of the direct current voltage regulator 7 is increased, so that the output rotating speed is improved;μ f when the output rotation speed is increased by the rise,Δμ=μ r -μ f if < 0, the output voltage of the dc voltage regulator 7 will decrease, thereby decreasing the output rotational speed.
Claims (1)
1. A controllable stepless speed change system based on magnetorheological fluid comprises a driving shaft (8-1) and a driven shaft (8-14) which is arranged on the same axis with the driving shaft (8-1), wherein a magnetic isolation hub (8-17) is arranged on the driven shaft (8-14), a driven friction plate (8-9) and a driving friction plate (8-8) which is inserted with the driven friction plate (8-9) are arranged on the magnetic isolation hub (8-17), magnetorheological fluid (8-21) is sealed in a gap between the driving friction plate (8-8) and the driven friction plate (8-9), the driving friction plate (8-8) is fixed on the magnetic isolation ring (8-7) of the friction plate, and a magnet exciting coil (8-19) is arranged on the periphery of the magnetic isolation ring (8-7) of the friction plate, and is characterized in that: the driving shaft (8-1) and the driven shaft (8-14) are respectively fixed between the upper box body (8-5) and the lower box body (8-18) which are buckled through a driving shaft bearing (8-3) and a driven shaft outer bearing (8-12), the excitation coil (8-19) is arranged in the groove of the upper box body (8-5) and the lower box body (8-18), the left sides of the driving friction plate (8-8) and the driven friction plate (8-9) are respectively provided with a left magnetism isolating side plate (8-6) which is fixed on the left sides of the driving shaft (8-1) and the friction plate magnetism isolating ring (8-7), the right sides of the driving friction plate (8-8) and the driven friction plate (8-9) are provided with a right magnetism isolating bearing seat (8-10) which is fixed on the right side of the friction plate magnetism isolating ring (8-7), a driven shaft inner bearing (8-16) is arranged between, the outer sides of the driving shaft (8-1) and the driven shaft (8-14) are respectively provided with a driving shaft sealing cover (8-4) and a driven shaft sealing cover (8-15) which are fixed on the upper box body (8-5) and the lower box body (8-18); two outer joints of excitation coil (8-19) are connected with direct current voltage regulator (7) through current-limiting resistor R, and driven shaft (8-14) outside is equipped with speed sensor (1), and last even voltage amplifier (3) of speed sensor (1), last even potentiometre (2) of voltage amplifier (3), and power amplifier (4) are established ties in voltage amplifier (3), and last even of power amplifier (4) has servo motor (5), and servo motor (5) are connected with direct current voltage regulator (7) through derailleur (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202038293U CN202152836U (en) | 2011-06-17 | 2011-06-17 | Controllable stepless speed change system based on magnetorheological fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202038293U CN202152836U (en) | 2011-06-17 | 2011-06-17 | Controllable stepless speed change system based on magnetorheological fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202152836U true CN202152836U (en) | 2012-02-29 |
Family
ID=45693332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202038293U Expired - Lifetime CN202152836U (en) | 2011-06-17 | 2011-06-17 | Controllable stepless speed change system based on magnetorheological fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202152836U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287499A (en) * | 2011-06-17 | 2011-12-21 | 中国矿业大学 | Magnetorheological fluid-based controllable stepless speed change system |
| CN104283389A (en) * | 2014-05-22 | 2015-01-14 | 石河子大学 | Cage type asynchronous motor speed regulating system based on magnetorheological fluid |
-
2011
- 2011-06-17 CN CN2011202038293U patent/CN202152836U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287499A (en) * | 2011-06-17 | 2011-12-21 | 中国矿业大学 | Magnetorheological fluid-based controllable stepless speed change system |
| CN102287499B (en) * | 2011-06-17 | 2013-04-24 | 中国矿业大学 | Magnetorheological fluid-based controllable stepless speed change system |
| CN104283389A (en) * | 2014-05-22 | 2015-01-14 | 石河子大学 | Cage type asynchronous motor speed regulating system based on magnetorheological fluid |
| CN104283389B (en) * | 2014-05-22 | 2017-06-13 | 石河子大学 | Cage type asynchronous motor governing system based on magnetic flow liquid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102287499B (en) | Magnetorheological fluid-based controllable stepless speed change system | |
| US4896754A (en) | Electrorheological fluid force transmission and conversion device | |
| CN104343914B (en) | A kind of infinitely variable speed gearing of reducing gear relay transmission | |
| CN204572851U (en) | Torque clutch | |
| CN202152836U (en) | Controllable stepless speed change system based on magnetorheological fluid | |
| CN101994768A (en) | Permanent magnet type magnetorheological fluid ultimate torque coupling | |
| CN204761271U (en) | Three cylinder magnetic transmission speed regulators | |
| CN110402340A (en) | A kind of controllable worm gearing of wheelchair | |
| EP0208689B1 (en) | A torque-sensing clutch | |
| CN202625690U (en) | Magneto rheological clutch electric | |
| CN205278164U (en) | Multi -spring centrifugal clutch | |
| CN104019153A (en) | Communication magnetorheological fluid clutch | |
| CN103107679A (en) | Permanent magnet eddy coupling with smaller time-lag effects in disc type | |
| CN109854637B (en) | Permanent magnet excited torque controllable magneto-rheological overload protection safety coupling | |
| RU2012121912A (en) | DRIVING DEVICE FOR CLEANING AND DEVICE FOR CLEANING | |
| CN203627579U (en) | Torsion limiter | |
| CN211737821U (en) | Friction transmission mechanism | |
| CN205105076U (en) | Can change permanent magnetism speed regulator that turns to | |
| CN206377178U (en) | The electromagnetic clutch of brushless line traffic control centrifugal globe arm engagement device | |
| CN103307242A (en) | Magneto-rheological stepless torque converter | |
| KR20230074295A (en) | Transmission assembly and method | |
| CN110005772A (en) | Permanent magnet type magnetic current variable liquid driving device | |
| CN203868180U (en) | Communicated magneto-rheological clutch | |
| CN201839599U (en) | Novel clutch applicable to agricultural ploughing machine | |
| CN204544335U (en) | A kind of transmission device of ball mill barrel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120229 Effective date of abandoning: 20130424 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120229 Effective date of abandoning: 20130424 |
|
| RGAV | Abandon patent right to avoid regrant |