CN201412460Y - Drive device based on magnetorheological fluid - Google Patents
Drive device based on magnetorheological fluid Download PDFInfo
- Publication number
- CN201412460Y CN201412460Y CN2009201224841U CN200920122484U CN201412460Y CN 201412460 Y CN201412460 Y CN 201412460Y CN 2009201224841 U CN2009201224841 U CN 2009201224841U CN 200920122484 U CN200920122484 U CN 200920122484U CN 201412460 Y CN201412460 Y CN 201412460Y
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- magnetic flow
- flow liquid
- gearbox
- electromagnetic coil
- liquid case
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Abstract
The utility model relates to a drive device based on magnetorheological fluid, which aims at resolving the problem that a traditional drive device is structurally complex and difficult to obtain stepless speed change. The drive device comprises a gear box, a power shaft, a solenoid coil and a magnetorheological fluid box; a front end cap and a rear end cap are fixedly arranged at two ends of the shell of the gear box; the magnetorheological fluid box disposed inside the gear box includes a box body and a cover board; the cover body is fixedly arranged on the top side of the box body; a drive rotor is disposed inside the magnetorheological fluid box and includes a rotor body and a drive shaft; a power input shaft penetrates the front end cap of the gear box, and one end of the power input shaft is fixedly and vertically connected with the center of the body of the magnetorheological fluid box; a power output shaft penetrates the rear end cap of he gear box, and one end of the power output shaft is connected with the other end of the drive shaft; the drive shaft is connected with the cover board of the magnetorheological fluid box through a bearing; solenoid coil assembly pairs are arranged on the circumference of the shell of the gear box. The drive device has relatively simple structure, is stable without any impact, causes no noise, and is simple and convenient to be controlled.
Description
Technical field
The utility model relates to transmission device, especially relates to the liquid state of utilizing magnetic flow liquid and solid-state two phase transformations are reversible and the quick transmission device of this physical property of response.
Background technique
Speed change gear is one of core of transmission system.In transmission system, speed change gear plays and connects power section and do-part, realizes control requirements such as do-part rotating speed and torques.The performance of speed change gear all has direct influence to dynamic characteristic, static characteristic and the transmission efficiency of transmission system.
Along with the development of technology, the performance requirement of speed change gear is more and more higher, and develops to stepless change from step change.Traditional mechanical type speed change gear, complex structure, processing difficulties, and be difficult to accomplish real stepless change.There is following defective in traditional mechanical formula speed change gear: low-response during rate conversion; Impact is arranged during rate conversion, and noise is bigger; Heating is serious during work; Be difficult to realize the control requirement of relative complex.At present, along with the appearance of this novel intelligent material of magnetic flow liquid, researchers begin one's study based on the transmission device of this novel intelligent material.Magnetic flow liquid is externally under the action of a magnetic field, its shear yield strength, and the transformation of the order of magnitude can take place in rheological propertiess such as apparant viscosity, and this transformation has well controlled and reversibility, and response is rapidly.
Researchers attempt to utilize the character of its stickiness continuous controllable, develop controlled stepless speed changes devices.Its typical structure is: adopt a pair of disc between input shaft and the output shaft or many staggered disc is done the clutch body, be full of magnetic flow liquid between the disc.By the intensity of control externally-applied magnetic field, the stickiness power of magnetic flow liquid between disc is changed within the specific limits continuously, thereby realize output shaft stepless change within the specific limits.This speed change gear relies on the friction transmitting torque, and heating is serious, and transmission efficiency is too low.
Summary of the invention
Of the present utility model at the deficiencies in the prior art, a kind of transmission device based on magnetic flow liquid is provided, can realize stepless change.
Transmission device of the present utility model comprises gearbox, power input shaft, pto, electromagnetic coil, transmission rotor, magnetic flow liquid case.
Gearbox comprises columnar shell, and front cover and rear end cover are fixedly installed on the two ends of shell respectively.
The magnetic flow liquid case is arranged in the gearbox, and the magnetic flow liquid case comprises casing and cover plate; Described casing is a cylindrical shape, and the bottom surface sealing of casing, end face are opened; Cover plate is fixedly installed on the end face of casing.
The transmission rotor is arranged in the magnetic flow liquid case, and the transmission rotor comprises rotor body and transmission shaft; Described rotor body is solid cylindrical body, and an end of transmission shaft is connected with the center fixation of rotor body end face is vertical.Transmission rotor and magnetic flow liquid case radial clearance d are that 1.5～3 millimeters, axial clearance h are 3～5 millimeters, are full of magnetic flow liquid in the described gap.
Gearbox, magnetic flow liquid case, transmission rotor coaxial are provided with.
Power input shaft passes the front cover setting of gearbox, and an end is connected with the center fixation of the bottom surface of magnetic flow liquid box body is vertical.
Pto passes the rear end cover setting of gearbox, and an end is connected with the other end of transmission shaft; Transmission shaft is connected by bearing with the cover plate of magnetic flow liquid case.
Power input shaft, pto, the coaxial setting of transmission shaft.
It is right that the interior circumference along gear-box case of gearbox is symmetrically arranged with the individual electromagnetic coil assembly of n (n 〉=4), each electromagnetic coil assembly is to comprising two electromagnetic coil assemblies that are symmetricly set on magnetic flow liquid case both sides, and all electromagnetic coil assemblies are arranged on the position between the forward and backward end cap of magnetic flow liquid case and gearbox; Described electromagnetic coil assembly comprises coil distaff and electromagnetic coil, and on coil distaff, with gear-box case fixedly connected around the home by an end of coil distaff for electromagnetic coil, and the other end is fixedlyed connected with the magnetic flow liquid case by tie-beam.
The transmission device that the utility model proposes, its electromagnetic coil input high frequency period control electric current, and utilize the liquid state of magnetic flow liquid and solid-state two phase transformations are reversible and quick this physical property of response, by regulating the control electric current ratio of phase make-and-break time weekly, control weekly the joint and the disengaging time ratio of clutch body in the phase, can realize stepless change.The beneficial effect that the utility model had is:
(1) structure is simple relatively, does not steadily have during speed change and impacts, noiseless and control simple and convenient;
(2) adopt to regulate the control electric current weekly the duty of phase Beat recently realize stepless change, heating value is few during work, the transmission efficiency height of energy.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model control current diagram.
Embodiment
As shown in Figure 1, stepless speed changes devices comprises gearbox, power input shaft, pto, electromagnetic coil, transmission rotor, magnetic flow liquid case.
Gearbox comprises columnar shell 13, and front cover 9 and rear end cover 1 are fixedly installed on the two ends of shell 13 respectively.
The magnetic flow liquid case is arranged in the gearbox, and the magnetic flow liquid case comprises casing 12 and cover plate 2; Described casing 12 is a cylindrical shape, and the bottom surface sealing of casing 12, end face are opened; Cover plate 2 is fixedly installed on the end face of casing 12, and casing 12 is provided with seal ring with the junction point of cover plate 2.
The transmission rotor is arranged in the magnetic flow liquid case, and the transmission rotor comprises rotor body 6 and transmission shaft 4; Described rotor body 6 is solid cylindrical body, the vertical connection of center fixation of an end of transmission shaft 4 and rotor body 6 end faces.Transmission rotor and magnetic flow liquid case radial clearance d are that 2 millimeters, axial clearance h are 4 millimeters, are full of magnetic flow liquid in the described gap.
Gearbox, magnetic flow liquid case, transmission rotor coaxial are provided with.
The front cover 9 that power input shaft 10 passes gearbox is provided with, and an end is connected with the center fixation of the bottom surface of magnetic flow liquid box body 12 is vertical.
The rear end cover 1 that pto 3 passes gearbox is provided with, and an end is connected with the other end of transmission shaft 4; Transmission shaft 4 is connected by bearing 5 with the cover plate 2 of magnetic flow liquid case, and transmission shaft 4 is provided with seal ring with cover plate 2 junction points.
Power input shaft, pto, the coaxial setting of transmission shaft.
It is right that the interior circumference along gear-box case of gearbox is symmetrically arranged with 4,6 or 8 electromagnetic coil assemblies, each electromagnetic coil assembly is to comprising two electromagnetic coil assemblies that are symmetricly set on magnetic flow liquid case both sides, and all electromagnetic coil assemblies are arranged on the position between the forward and backward end cap of magnetic flow liquid case and gearbox; Described electromagnetic coil assembly comprises coil distaff 7 and electromagnetic coil 8, and on coil distaff 7, with gear-box case fixedly connected around the home by an end of coil distaff 7 for electromagnetic coil 8, and the other end is fixedlyed connected with the magnetic flow liquid case by tie-beam 11.
As shown in Figure 2, when the periodically pulsing of input appropriate frequency in the electromagnetic coil was controlled current signal, this control electric current was the periodically pulsing signal of appropriate frequency, and the cycle is T, be t current"on"time phase weekly, magnetic flow liquid liquid and solid-state do the fast cycle switching.When electromagnetic coil was in "on" position, magnetic flow liquid was solid-state between the clutch body, and casing engages with the transmission rotor that magnetic material makes, and rotated thereby drive output shaft; When coil during for off-position, magnetic flow liquid is liquid, casing and transmission rotor, input shaft drives casing idle running, during casing idle running, the output shaft rotating speed reduces gradually, measure when the front output shaft rotating speed by velocity transducer, when the output shaft rotating speed is lower than when setting rotating speed, electromagnetic coil once more current"on"time be t, make the output shaft rotating speed improve, by regulating the control electric current, make current"on"time t and the ratio of period T 0～1 change continuously, thereby the rotating speed of output shaft is changed between 0～N (N is the input shaft rotating speed) continuously, thereby realize stepless shift function.
Claims (1)
1, a kind of transmission device based on magnetic flow liquid comprises gearbox, power input shaft, pto, electromagnetic coil, transmission rotor, magnetic flow liquid case, it is characterized in that:
Gearbox comprises columnar shell, and front cover and rear end cover are fixedly installed on the two ends of shell respectively;
The magnetic flow liquid case is arranged in the gearbox, and the magnetic flow liquid case comprises casing and cover plate, and described casing is a cylindrical shape, and the bottom surface sealing of casing, end face are opened; Cover plate is fixedly installed on the end face of casing;
The transmission rotor is arranged in the magnetic flow liquid case, and the transmission rotor comprises rotor body and transmission shaft, and described rotor body is solid cylindrical body, and an end of transmission shaft is connected with the center fixation of rotor body end face is vertical; Transmission rotor and magnetic flow liquid case radial clearance d are that 1.5～3 millimeters, axial clearance h are 3～5 millimeters, are full of magnetic flow liquid in the described gap;
Gearbox, magnetic flow liquid case, transmission rotor coaxial are provided with;
Power input shaft passes the front cover setting of gearbox, and an end is connected with the center fixation of the bottom surface of magnetic flow liquid box body is vertical;
Pto passes the rear end cover setting of gearbox, and an end is connected with the other end of transmission shaft; Transmission shaft is connected by bearing with the cover plate of magnetic flow liquid case;
Power input shaft, pto, the coaxial setting of transmission shaft;
It is right that the interior circumference along gear-box case of gearbox is symmetrically arranged with n electromagnetic coil assembly, n 〉=4, each electromagnetic coil assembly is to comprising two electromagnetic coil assemblies that are symmetricly set on magnetic flow liquid case both sides, and all electromagnetic coil assemblies are arranged on the position between the forward and backward end cap of magnetic flow liquid case and gearbox; Described electromagnetic coil assembly comprises coil distaff and electromagnetic coil, and on coil distaff, with gear-box case fixedly connected around the home by an end of coil distaff for electromagnetic coil, and the other end is fixedlyed connected with the magnetic flow liquid case by tie-beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201224841U CN201412460Y (en) | 2009-06-15 | 2009-06-15 | Drive device based on magnetorheological fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201224841U CN201412460Y (en) | 2009-06-15 | 2009-06-15 | Drive device based on magnetorheological fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201412460Y true CN201412460Y (en) | 2010-02-24 |
Family
ID=41714344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201224841U Expired - Lifetime CN201412460Y (en) | 2009-06-15 | 2009-06-15 | Drive device based on magnetorheological fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201412460Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592195B (en) * | 2009-06-15 | 2010-10-20 | 杭州电子科技大学 | Transmission device based on magneto-rheological fluid |
| CN102562979A (en) * | 2012-01-19 | 2012-07-11 | 中国矿业大学 | Magnetorheological fluid transmission device with variable power |
| CN103062347A (en) * | 2013-01-23 | 2013-04-24 | 中国矿业大学 | Multiple-output transmission device for magnetorheological fluid |
| CN103697126A (en) * | 2013-12-20 | 2014-04-02 | 合肥京东方光电科技有限公司 | Magnetorheological fluid continuously variable transmission system and rotating speed control circuit thereof |
| CN110576705A (en) * | 2018-06-08 | 2019-12-17 | 郑州宇通客车股份有限公司 | Vehicle, drive axle and half shaft assembly |
| CN112240359A (en) * | 2019-07-19 | 2021-01-19 | 广东美的白色家电技术创新中心有限公司 | Clutch device and electrical equipment |
| CN113564875A (en) * | 2020-04-28 | 2021-10-29 | 无锡小天鹅电器有限公司 | Power transmission device, clothes treatment equipment and control method thereof |
-
2009
- 2009-06-15 CN CN2009201224841U patent/CN201412460Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592195B (en) * | 2009-06-15 | 2010-10-20 | 杭州电子科技大学 | Transmission device based on magneto-rheological fluid |
| CN102562979A (en) * | 2012-01-19 | 2012-07-11 | 中国矿业大学 | Magnetorheological fluid transmission device with variable power |
| CN103062347A (en) * | 2013-01-23 | 2013-04-24 | 中国矿业大学 | Multiple-output transmission device for magnetorheological fluid |
| CN103697126A (en) * | 2013-12-20 | 2014-04-02 | 合肥京东方光电科技有限公司 | Magnetorheological fluid continuously variable transmission system and rotating speed control circuit thereof |
| CN103697126B (en) * | 2013-12-20 | 2016-01-06 | 合肥京东方光电科技有限公司 | A kind of magnetic flow liquid stepless speed variator system and rotating-speed control circuit thereof |
| CN110576705A (en) * | 2018-06-08 | 2019-12-17 | 郑州宇通客车股份有限公司 | Vehicle, drive axle and half shaft assembly |
| CN112240359A (en) * | 2019-07-19 | 2021-01-19 | 广东美的白色家电技术创新中心有限公司 | Clutch device and electrical equipment |
| CN112240359B (en) * | 2019-07-19 | 2022-10-04 | 广东美的白色家电技术创新中心有限公司 | Clutch device and electrical equipment |
| CN113564875A (en) * | 2020-04-28 | 2021-10-29 | 无锡小天鹅电器有限公司 | Power transmission device, clothes treatment equipment and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100224 Effective date of abandoning: 20090615 |