阅读说明：本技术 一种非接触式磁流变液传动装置 (Non-contact magnetorheological suspensions transmission ) 是由 田祖织 谢方伟 季锦杰 王书友 李昊鹏 黄咸康 于 2020-07-20 设计创作，主要内容包括：本发明公开了一种非接触式磁流变液传动装置,属于机械动力传递技术领域。下磁极(1)和上磁极(4)安装在旋转导磁板(3)上,且与主动轴(2)同步旋转,形成主动旋转部分；磁流变液(7)被密封在左隔磁板(5)、右隔磁板(9)和导磁套筒(6)所构成的密闭空间内,隔离盘组(8)将磁流变液分割成多个工作区域,并与从动轴(10)通过导磁套筒(6)和右隔磁板(9)固定相连,形成从动旋转部分。本装置在下磁极和上磁极形成的旋转磁场作用下,磁流变液固化并产生旋转运动,进而带动隔磁盘组及从动轴旋转,工作过程中,主从动部件间无直接接触,无磨损；磁流变液通过静密封方式放于密闭空间内,泄漏风险小,适用于主从动部分无法直接接触的传动场合。(The invention discloses a non-contact magnetorheological fluid transmission device, and belongs to the technical field of mechanical power transmission. The lower magnetic pole (1) and the upper magnetic pole (4) are arranged on the rotary magnetic conduction plate (3) and synchronously rotate with the driving shaft (2) to form a driving rotation part; magnetorheological fluid (7) is sealed in a closed space formed by the left magnetic isolation plate (5), the right magnetic isolation plate (9) and the magnetic conduction sleeve (6), the magnetorheological fluid is divided into a plurality of working areas by the isolation disc group (8), and the working areas are fixedly connected with a driven shaft (10) through the magnetic conduction sleeve (6) and the right magnetic isolation plate (9) to form a driven rotating part. Under the action of a rotating magnetic field formed by the lower magnetic pole and the upper magnetic pole, the magnetorheological fluid is solidified and generates rotary motion, so that the magnetic separation disc group and the driven shaft are driven to rotate, and in the working process, the driving part and the driven part are not in direct contact and are not abraded; the magnetorheological fluid is placed in a closed space in a static sealing mode, the leakage risk is low, and the magnetorheological fluid is suitable for a transmission occasion where a driving part and a driven part cannot be in direct contact.)

1. A non-contact magnetorheological fluid transmission device comprises a driving component and a driven component, wherein the driving component comprises: the magnetic field generator comprises a lower magnetic pole (1), an upper magnetic pole (4), a rotary magnetic conduction plate (3) and a driving shaft (2); the driven portion includes: a left magnetic shield (5), a right magnetic shield (9), a sleeve (6), magnetorheological fluid (7), a separation disc set (8) and a driven shaft (10),

the magnetic suspension type magnetic suspension device is characterized in that the lower magnetic pole (1) and the upper magnetic pole (4) are arranged in a rotary magnetic conduction plate (3) fixedly connected with the driving shaft (2);

the magnetorheological fluid (7) is sealed in a closed space formed by the left magnetic-isolating plate (5), the right magnetic-isolating plate (9) and the sleeve (6), the magnetorheological fluid (7) is divided into a plurality of working areas by the isolating disc group (8), and the working areas are fixedly connected with the driven shaft (10) through the magnetic-conducting sleeve (6) and the right magnetic-isolating plate (9).

2. The non-contact type magnetorheological fluid transmission device according to claim 1,

the lower magnetic poles (1) and the upper magnetic poles (4) form mutually attracted magnetic poles, and the number of the magnetic poles is one or more.

3. The non-contact type magnetorheological fluid transmission device according to claim 1,

the isolating disc group (8) is disc-shaped or cylindrical.

4. The non-contact type magnetorheological fluid transmission device according to claim 1,

the lower magnetic pole (1) and the upper magnetic pole (4) are permanent magnets or electromagnets.

Technical Field

The invention relates to a magnetorheological fluid device, in particular to a non-contact magnetorheological fluid transmission device, and belongs to the technical field of mechanical power transmission.

Background

Magnetorheological fluids (MRFs), one of the important branches of smart materials, are mainly composed of soft magnetic particles, a base carrier Fluid and additives coated on the surface of the particles to prevent the particles from settling, and have remarkable rheological properties under the action of a magnetic field, and are basically characterized in that: when no external magnetic field is applied, the fluid is in a free flowing state; under the action of an external magnetic field, the liquid is instantaneously changed from a free-flowing state to a semi-solid state, and the controllable shear yield strength is presented, and the transformation is reversible. Due to the characteristics of rapid reaction, reversible change and easy control of the magnetorheological fluid, the magnetorheological fluid is more and more widely applied to a plurality of fields such as automobiles, machinery, aerospace, buildings, medical treatment and the like since the magnetorheological fluid is published, and a large amount of manpower and material resources are put into all countries in the world to research the magnetorheological fluid, so that the magnetorheological fluid is considered to be a novel intelligent material with the greatest development prospect. The magneto-rheological Transmission Device (MRTD) is a power Transmission Device developed by utilizing the magneto-rheological Transmission technology, has the characteristics of high response speed (generally in millisecond level), small abrasion of Transmission parts, simple control (stepless regulation of torque or rotating speed can be realized by regulating an external magnetic field), small volume, low control energy consumption (2-50W), low control voltage (2-25V), insensitivity to interference of external impurities and the like, is an ideal power Transmission Device, and has the unique advantages in the aspects of starting, braking, torque regulation, stepless speed regulation, overload safety protection and the like of electromechanical devices.

At present, there are many patents related to magnetorheological fluid transmission devices, such as: the Chinese patent 'radial self-pressurizing magnetorheological fluid clutch' published 2002, 1, 16. 00104451.6. A Chinese patent "magnetorheological continuously variable transmission" (application No. 201010121882.9) published on 8/4/2010. Chinese patent 'a water-cooled magnetorheological soft start device' published on 2, 22 and 2012 (application number: 201110334597. X). The magneto-rheological fluid is sealed in a working gap between the main component and the auxiliary component in a rotary sealing mode, leakage is easy to occur in the working process, and the stability of power transmission is affected.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a non-contact magnetorheological fluid transmission device, wherein the driving part and the driven part are not in direct contact and are not abraded in the working process of the device; the magnetorheological fluid is placed in a closed space in a static sealing mode, the leakage risk is small, the power transmission stability is high, and the magnetorheological fluid is suitable for transmission occasions where the driving parts and the driven parts cannot be in direct contact.

In order to achieve the above object, the device comprises a driving part and a driven part, wherein the driving part comprises: the magnetic pole comprises a lower magnetic pole, an upper magnetic pole, a rotary magnetic conduction plate and a driving shaft; the driven portion includes: the device comprises a left magnetic shield, a right magnetic shield, a sleeve, magnetorheological fluid, a separation disc set and a driven shaft.

The magnetic field generator is characterized in that the lower magnetic pole and the upper magnetic pole are arranged in a rotary magnetic conduction plate fixedly connected with the driving shaft and can synchronously rotate along with the driving shaft, and a rotary magnetic field is formed between the upper magnetic pole and the lower magnetic pole.

The magnetorheological fluid is sealed in a closed space formed by the left magnetic isolation plate, the right magnetic isolation plate and the sleeve, and the magnetorheological fluid is divided into a plurality of working areas by the isolation disc group and is fixedly connected with the driven shaft through the magnetic conduction sleeve and the right magnetic isolation plate. Under the action of a rotating magnetic field formed by the upper magnetic pole and the lower magnetic pole, the magnetorheological fluid is solidified and generates rotating motion, and then the magnetic separation disc group and the driven shaft are driven to rotate, so that power transmission is realized.

Furthermore, the lower magnetic pole and the upper magnetic pole form mutually attracted magnetic poles, and the number of the magnetic poles is one group or multiple groups.

Further, the shape of the isolation disc group is a disc shape or a cylinder shape.

Further, the lower magnetic pole and the upper magnetic pole are permanent magnets or electromagnets.

Compared with the prior art, the non-contact magnetorheological fluid transmission device realizes power transmission by driving the magnetorheological fluid to move by means of the rotating magnetic field in the working process, and the driving part and the driven part are not in direct contact with each other and are not abraded; the magnetorheological fluid is arranged in the closed space of the driven part in a static sealing mode, has small leakage risk and is suitable for transmission occasions where the driving part and the driven part cannot be in direct contact.

Drawings

FIG. 1 is a schematic diagram of the main structure of the present invention;

FIG. 2 is a schematic view of a rotating magnetic pole of the present invention;

in the figure: 1. the magnetic field generator comprises a lower magnetic pole, 2, a driving shaft, 3, a rotary magnetic conduction plate, 4, an upper magnetic pole, 5, a left magnetic isolation plate, 6, a sleeve, 7, magnetorheological fluid, 8, an isolation disc group, 9, a right magnetic isolation plate, 10 and a driven shaft.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1, the device comprises a driving part and a driven part, wherein the driving part comprises: the magnetic field generator comprises a lower magnetic pole 1, an upper magnetic pole 4, a rotary magnetic conduction plate 3 and a driving shaft 2; the driven portion includes: the device comprises a left magnetic shield 5, a right magnetic shield 9, a sleeve 6, magnetorheological fluid 7, a spacer disc group 8 and a driven shaft 10.

The magnetic field rotating device is characterized in that the lower magnetic pole 1 and the upper magnetic pole 4 are arranged in a rotating magnetic conduction plate 3 fixedly connected with the driving shaft 2 and can synchronously rotate along with the driving shaft 2 to form a rotating magnetic field.

The left magnetic isolation plate 5, the isolation disc group 8, the magnetic conduction sleeve 6 and the right magnetic isolation plate 9 are fixedly connected with a driven shaft 10; the magnetorheological fluid 7 is sealed in a closed space formed by the left magnetic shield 5, the right magnetic shield 9 and the sleeve 6, and the magnetorheological fluid 7 is divided into a plurality of working areas by the isolation disc group 8 so as to improve the power transmission capacity; under the action of a rotating magnetic field formed by the upper magnetic pole and the lower magnetic pole, the magnetorheological fluid 7 is solidified and generates rotating motion, and then the magnetic separation disc group and the driven shaft are driven to rotate, so that power transmission is realized.

Further, the lower magnetic pole 1 and the upper magnetic pole 4 form mutually attracted magnetic poles, and the number of the magnetic poles is one or more groups.

Further, the separator disk group 8 may have a disk shape, or may have another shape such as a cylinder.

Further, the lower magnetic pole 1 and the upper magnetic pole 4 may be permanent magnets or electromagnets.

The specific working process is as follows:

the driving shaft 2 drives the upper magnetic pole 4 and the lower magnetic pole 1 inside the driving shaft to rotate through the rotating magnetic conduction plate 3, a rotating magnetic field is formed between the upper magnetic pole and the lower magnetic pole, the magnetorheological fluid 7 is solidified under the action of the rotating magnetic field and rotates along with the magnetic field, friction is generated between the rotating magnetorheological fluid 7 and the magnetic conduction sleeve 6 and the isolation disc group 8 to drive the magnetorheological fluid to rotate, the driven shaft 10 is further driven to rotate, and non-contact power transmission between the driving part and the driven part is achieved.

In conclusion, in the working process of the non-contact magnetorheological fluid transmission device, the magnetorheological fluid sealed in the driven part is driven to move by virtue of the rotating magnetic field, so that power transmission is realized, and the driving part and the driven part are not in direct contact and are not abraded; the magnetorheological fluid is arranged in the closed space of the driven part in a static sealing mode, the leakage risk is low, and the device is suitable for the transmission occasions where the driving part and the driven part cannot be in direct contact.