CN101592195A - Transmission device based on magnetic flow liquid - Google Patents
Transmission device based on magnetic flow liquid Download PDFInfo
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- CN101592195A CN101592195A CNA2009100997847A CN200910099784A CN101592195A CN 101592195 A CN101592195 A CN 101592195A CN A2009100997847 A CNA2009100997847 A CN A2009100997847A CN 200910099784 A CN200910099784 A CN 200910099784A CN 101592195 A CN101592195 A CN 101592195A
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- magnetic flow
- flow liquid
- gearbox
- transmission
- liquid case
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Abstract
The present invention relates to transmission device based on magnetic flow liquid.The conventional transmission device complex structure, processing difficulties and be difficult to accomplish stepless change.The present invention includes gearbox, power input shaft, pto, electromagnetic coil, magnetic flow liquid case.Front cover and rear end cover are fixedly installed on the two ends of gear-box case; The magnetic flow liquid case is arranged in the gearbox, comprises casing and cover plate, and cover plate is fixedly installed on the end face of casing.The transmission rotor is arranged in the magnetic flow liquid case, comprises rotor body and transmission shaft.Power input shaft passes the front cover setting of gearbox, an end and vertical connection of magnetic flow liquid box body center fixation.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.It is right to be provided with the electromagnetic coil assembly along the circumference of gear-box case.The transmission structures that the present invention proposes is simple relatively, does not steadily have during speed change and impacts, noiseless and control simple and convenient.
Description
Technical field
The present invention relates to transmission device, especially relate 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 invention 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 invention 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 present invention 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 present invention 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 a structural representation of the present invention;
Fig. 2 is that the present invention controls 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, based on the transmission device of magnetic flow liquid, comprise 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 |
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CN2009100997847A CN101592195B (en) | 2009-06-15 | 2009-06-15 | Transmission device based on magneto-rheological fluid |
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CN2009100997847A CN101592195B (en) | 2009-06-15 | 2009-06-15 | Transmission device based on magneto-rheological fluid |
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CN101592195A true CN101592195A (en) | 2009-12-02 |
CN101592195B CN101592195B (en) | 2010-10-20 |
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CN2009100997847A Expired - Fee Related CN101592195B (en) | 2009-06-15 | 2009-06-15 | Transmission device based on magneto-rheological fluid |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101915277A (en) * | 2010-07-21 | 2010-12-15 | 河海大学 | Uniwafer three-disk magnetic rheological clutch |
CN107830080A (en) * | 2017-12-04 | 2018-03-23 | 洛阳理工学院 | A kind of new magnetic flow liquid freewheel clutch |
CN110940573A (en) * | 2019-10-28 | 2020-03-31 | 郑州大学 | Displacement-current hybrid control pseudo-static test loading system |
CN111188868A (en) * | 2020-02-21 | 2020-05-22 | 华东交通大学 | Magnetorheological multistage adjustable inertia capacitance variable damping device |
CN107830080B (en) * | 2017-12-04 | 2024-05-14 | 洛阳理工学院 | Novel magneto-rheological fluid overrunning clutch |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5967273A (en) * | 1997-10-17 | 1999-10-19 | Eaton Corporation | Magneto-rheological fluid coupling |
CN1331389A (en) * | 2000-07-05 | 2002-01-16 | 中国科学技术大学 | Radially self-pressurizing clutch with magnetic rheologic liquid |
CN2575371Y (en) * | 2002-07-12 | 2003-09-24 | 华侨大学 | Internal differential hydraulic cylinder |
CN1295453C (en) * | 2003-09-08 | 2007-01-17 | 重庆大学 | Magnetorheological continuously variable transmission |
CN201412460Y (en) * | 2009-06-15 | 2010-02-24 | 杭州电子科技大学 | Drive device based on magnetorheological fluid |
-
2009
- 2009-06-15 CN CN2009100997847A patent/CN101592195B/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101915277A (en) * | 2010-07-21 | 2010-12-15 | 河海大学 | Uniwafer three-disk magnetic rheological clutch |
CN107830080A (en) * | 2017-12-04 | 2018-03-23 | 洛阳理工学院 | A kind of new magnetic flow liquid freewheel clutch |
CN107830080B (en) * | 2017-12-04 | 2024-05-14 | 洛阳理工学院 | Novel magneto-rheological fluid overrunning clutch |
CN110940573A (en) * | 2019-10-28 | 2020-03-31 | 郑州大学 | Displacement-current hybrid control pseudo-static test loading system |
CN110940573B (en) * | 2019-10-28 | 2022-07-05 | 郑州大学 | Displacement-current hybrid control pseudo-static test loading system |
CN111188868A (en) * | 2020-02-21 | 2020-05-22 | 华东交通大学 | Magnetorheological multistage adjustable inertia capacitance variable damping device |
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CN101592195B (en) | 2010-10-20 |
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Granted publication date: 20101020 Termination date: 20130615 |