阅读说明：本技术 一种基于磁流变液的传动连轴离合机构 (Transmission connecting shaft clutch mechanism based on magnetorheological fluid ) 是由 黄剑 于 2020-06-04 设计创作，主要内容包括：本发明涉及离合传动机构技术领域,且公开了一种基于磁流变液的传动连轴离合机构,包括传动主轴,所述传动主轴内腔中部的一侧设有安装内槽,所述安装内槽的内壁活动套接有活动压杆,且活动压杆与安装内槽内壁的一侧之间通过复位弹簧传动连接,所述传动主轴外表面一侧的内部设有传动槽孔,所述传动从轴外表面的左侧且位于传动主轴上传动槽孔的外沿固定安装有电磁线圈。该基于磁流变液的传动连轴离合机构,通过安装内槽、活动压杆和复位弹簧的设置,可以在分离动力时将传动主轴内腔一侧的磁流变液排出传动主轴的内部,以减小悬浮体状态下的磁流变液对于传动主轴形成造成的阻尼摩擦,进而降低了传动主轴在传递动力时的摩擦损耗。(The invention relates to the technical field of clutch transmission mechanisms, and discloses a transmission connecting shaft clutch mechanism based on magnetorheological fluid, which comprises a transmission main shaft, wherein an installation inner groove is formed in one side of the middle of an inner cavity of the transmission main shaft, a movable pressure rod is movably sleeved on the inner wall of the installation inner groove, the movable pressure rod is in transmission connection with one side of the inner wall of the installation inner groove through a reset spring, a transmission groove hole is formed in the inner part of one side of the outer surface of the transmission main shaft, and an electromagnetic coil is fixedly installed on the left side of the outer surface of the transmission main shaft and on the outer edge of the transmission. According to the transmission connecting shaft clutch mechanism based on the magnetorheological fluid, the inner groove, the movable compression bar and the reset spring are arranged, the magnetorheological fluid on one side of the inner cavity of the transmission main shaft can be discharged out of the transmission main shaft when power is separated, so that damping friction caused by the magnetorheological fluid on the transmission main shaft in a suspension state is reduced, and further friction loss of the transmission main shaft in power transmission is reduced.)

1. The utility model provides a transmission shaft coupling clutching mechanism based on magnetorheological suspensions, includes transmission main shaft (1), its characterized in that: an installation inner groove (2) is arranged on one side of the middle part of an inner cavity of the transmission main shaft (1), a movable pressure rod (3) is movably sleeved on the inner wall of the installation inner groove (2), the movable pressure rod (3) is in transmission connection with one side of the inner wall of the installation inner groove (2) through a reset spring (4), a transmission slotted hole (5) is formed in one side of the outer surface of the transmission main shaft (1), a transmission driven shaft (6) is movably sleeved on one side of the outer surface of the transmission main shaft (1), an electromagnetic coil (7) is fixedly installed on the left side of the outer surface of the transmission driven shaft (6) and on the outer edge of the transmission slotted hole (5) on the transmission main shaft (1), a carbon brush (8) is fixedly installed on the right side of the electromagnetic coil (7) and on the outer surface of the transmission driven shaft (6, and a transmission clamping groove (10) is formed in the middle of the inner cavity of the transmission driven shaft (6) and located on the right side of the transmission main shaft (1), a movable pressing block (11) is movably sleeved on the right side of the inner wall of the transmission driven shaft (6), a transmission connecting rod (12) is movably sleeved on one side of the movable pressing block (11), and the other end of the transmission connecting rod (12) penetrates through and extends to the outside of the transmission driven shaft (6).

2. The magnetorheological fluid-based transmission coupling clutch mechanism according to claim 1, characterized in that: magnetorheological fluid is filled in an inner cavity formed by the transmission main shaft (1), the installation inner groove (2) and the movable pressing block (11), and the volume of the space of the magnetorheological fluid is larger than the sum of the volumes of the inner cavities of all the transmission slotted holes (5).

3. The magnetorheological fluid-based transmission coupling clutch mechanism according to claim 1, characterized in that: the inner wall of the mounting inner groove (2) is of a boss-shaped structure, and the maximum compression displacement of the mounting inner groove (2) is larger than the depth of the innermost transmission slotted hole (5).

4. The magnetorheological fluid-based transmission coupling clutch mechanism according to claim 1, characterized in that: the distance between the right side of the inner cavity of the transmission clamping groove (10) and the transmission main shaft (1) is smaller than the length of the outer surface of the movable pressing block (11).

Technical Field

The invention relates to the technical field of clutch transmission mechanisms, in particular to a transmission connecting shaft clutch mechanism based on magnetorheological fluid.

Background

The clutch mechanism is a common component in mechanical transmission, can separate and engage the power in a transmission system at any time, and further effectively control and adjust the output magnitude of the power of an engine or a motor, at present, most of the prior art adopts a multi-plate friction clutch mechanism for power switching, but the multi-plate friction clutch mechanism can wear between friction plates when being engaged, so that the gap between the friction plates is enlarged, and further the duration of the power when being engaged is prolonged, and because the wear of the friction plates can generate a large amount of powder which can not be cleaned in time and is adhered on the friction plates, the torque of the friction when transmitting the power is poor, the relative sliding phenomenon can easily occur in the process of transmitting the power, and further the phenomenon of bruising can occur in the process of transmitting the power, and the smoothness and stability of the power when transmitting are poor, therefore, a new clutch mechanism for power transmission is needed to solve the drawbacks of the clutch mechanism in the prior art.

Disclosure of Invention

Technical problem to be solved

The invention provides a transmission connecting shaft clutch mechanism based on magnetorheological fluid, which has the advantages of no abrasion, sensitive response speed and no occurrence of jerk in the process of power separation and combination, and high fluency and stability in power transmission, solves the problems that in the prior art, a multi-plate friction clutch mechanism is mostly adopted for power switching, but the multi-plate friction clutch mechanism has abrasion between friction plates in the process of connection, so that the gap between the friction plates is enlarged, the time length of power connection is prolonged, and because the abrasion of the friction plates can generate a large amount of powder, the powder cannot be cleaned in time and adheres to the friction plates, the torque of friction in the process of power transmission is deteriorated, the relative sliding phenomenon is easy to occur in the process of power transmission, and the jerk phenomenon can occur in the process of power transmission, the problems of poor fluency and stability of power transmission are solved.

(II) technical scheme

The invention provides the following technical scheme: a transmission connecting shaft clutch mechanism based on magnetorheological fluid comprises a transmission main shaft, wherein an installation inner groove is formed in one side of the middle of an inner cavity of the transmission main shaft, a movable pressure rod is movably sleeved on the inner wall of the installation inner groove and is in transmission connection with one side of the inner wall of the installation inner groove through a reset spring, a transmission slotted hole is formed in one side of the outer surface of the transmission main shaft, a transmission driven shaft is movably sleeved on one side of the outer surface of the transmission main shaft, an electromagnetic coil is fixedly installed on the left side of the outer surface of the transmission driven shaft and located on the outer edge of the transmission slotted hole in the transmission main shaft, a carbon brush is fixedly sleeved on the right side of the electromagnetic coil and located on the outer surface of the transmission driven shaft, a transmission wheel is fixedly installed on the right side of the outer surface of the transmission driven shaft, a transmission clamping, one side of the movable pressing block is movably sleeved with a transmission connecting rod, and the other end of the transmission connecting rod penetrates through and extends to the outside of the transmission driven shaft.

Preferably, magnetorheological fluid is filled in an inner cavity formed by the transmission main shaft, the mounting inner groove and the movable pressing block, and the volume of the space of the inner cavity is larger than the sum of the volumes of the inner cavities of all the transmission slotted holes.

Preferably, the inner wall of the inner mounting groove is in a boss-shaped structure, and the maximum compression displacement of the inner mounting groove is larger than the depth of the innermost transmission groove hole.

Preferably, the distance between the right side of the inner cavity of the transmission clamping groove and the transmission main shaft is smaller than the length of the outer surface of the movable pressing block.

(III) advantageous effects

The invention has the following beneficial effects:

1. according to the transmission connecting shaft clutch mechanism based on the magnetorheological fluid, the magnetorheological fluid is arranged in an inner cavity formed by the transmission main shaft and the transmission driven shaft, the characteristic of the magnetorheological fluid under a magnetic field is utilized, and the connection and the disconnection of power between the transmission main shaft and the transmission driven shaft are controlled by the on-off of current.

2. This transmission connecting shaft clutching mechanism based on magnetorheological suspensions, to the setting of transmission main shaft and transmission from the axle activity cup joint and transmission slotted hole, make can be inseparable laminating together between transmission main shaft and the transmission from the axle, and realize the transmission connection to the transmission from the axle in the inside of transmission main shaft, thereby avoided forming the gas film on its surface along with the high-speed rotation of transmission main shaft because of centrifugal force when separating power, and then lead to the unable inseparable laminating of magnetorheological suspensions after applying the magnetic field on the transmission main shaft, make the moment of this clutching mechanism transmission less and with appearing relative slip, produce the problem of the phenomenon of seting up soon, the smoothness nature and the stability of this transmission connecting shaft clutching structure when transmission power have further been improved.

3. According to the transmission connecting shaft clutch mechanism based on the magnetorheological fluid, the inner groove, the movable compression bar and the reset spring are arranged, the magnetorheological fluid on one side of the inner cavity of the transmission main shaft can be discharged out of the transmission main shaft when power is separated, so that damping friction caused by the magnetorheological fluid on the transmission main shaft in a suspension state is reduced, and further friction loss of the transmission main shaft in power transmission is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of the transmission spindle of the present invention;

FIG. 3 is a schematic view of the construction of the driven shaft and its mounting components of the present invention.

In the figure: 1. a transmission main shaft; 2. installing an inner groove; 3. a movable pressure lever; 4. a return spring; 5. a transmission slot hole; 6. a driven shaft; 7. an electromagnetic coil; 8. a carbon brush; 9. a driving wheel; 10. a transmission clamping groove; 11. a movable pressing block; 12. a drive link.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a transmission coupling clutch mechanism based on magnetorheological fluid comprises a transmission main shaft 1, an inner installation groove 2 is arranged on one side of the middle part of the inner cavity of the transmission main shaft 1, a movable pressure rod 3 is movably sleeved on the inner wall of the inner installation groove 2, the movable pressure rod 3 is in transmission connection with one side of the inner wall of the inner installation groove 2 through a return spring 4, a transmission slotted hole 5 is arranged inside one side of the outer surface of the transmission main shaft 1, the transmission slotted hole 5 is annularly arrayed on one side of the transmission main shaft 1 and penetrates and extends into the inner installation groove 2, a transmission driven shaft 6 is movably sleeved on one side of the outer surface of the transmission main shaft 1, an electromagnetic coil 7 is fixedly installed on the left side of the outer surface of the transmission driven shaft 6 and located at the outer edge of the transmission slotted hole 5 on the transmission main shaft 1, a carbon brush 8 is fixedly sleeved on the right, and a transmission clamping groove 10 is arranged in the middle of the inner cavity of the transmission driven shaft 6 and on the right side of the transmission main shaft 1, a movable pressing block 11 is movably sleeved on the right side of the inner wall of the transmission driven shaft 6, a transmission connecting rod 12 is movably sleeved on one side of the movable pressing block 11, and the other end of the transmission connecting rod 12 penetrates through and extends to the outside of the transmission driven shaft 6.

The outer surface of the carbon brush 8 is connected with a power supply in a sliding contact mode, and an external thread is arranged at one end of the transmission connecting rod 12 and is in transmission connection with the driving mechanism.

The driving wheel 9 can be set to a gear structure or a belt wheel driving structure according to the magnitude of the driving torque.

In the technical scheme, magnetorheological fluid is filled in an inner cavity formed by the transmission main shaft 1, the installation inner groove 2 and the movable pressing block 11, and the volume of the space of the inner cavity is larger than the sum of the volumes of the inner cavities of all the transmission slotted holes 5.

The magnetorheological fluid is a suspension formed by mixing micro soft magnetic particles with high magnetic conductivity and low magnetic hysteresis and non-magnetic conductive liquid, and the suspension has the characteristic of low-viscosity Newtonian fluid under the condition of zero magnetic field; under the action of a strong magnetic field, the magnetorheological fluid shows high viscosity and low fluidity, a magnetic field is applied to the magnetorheological fluid by the electromagnetic coil 7 in the clutch mechanism, so that the transmission main shaft 1 and the transmission driven shaft 6 can be effectively jointed to realize the transmission of power, and when the magnetic field is lost, the transmission main shaft 1 and the transmission driven shaft 6 can slide relatively to realize the separation of the power.

In the technical scheme, the inner wall of the inner installation groove 2 is designed to be of a boss-shaped structure, and the maximum compression displacement of the inner installation groove 2 is greater than the depth of the innermost transmission groove hole 5.

Wherein, to the setting of the boss structure of the inner wall of the inner groove 2 and the inner reset spring 4, an effective pretightening force can be applied to the magnetorheological fluid in the clutch mechanism by the movable pressure bar 3, so that the magnetorheological fluid can be effectively filled into the inner cavity of the transmission slotted hole 5 or effectively contacted and fused with the magnetorheological fluid in the inner cavity of the transmission slotted hole 5, and the torque of the clutch mechanism in the process of transmitting power is further improved.

In the technical scheme, the distance from the right side of the inner cavity of the transmission clamping groove 10 to the transmission main shaft 1 is smaller than the length of the outer surface of the movable pressing block 11.

Wherein, to the setting of transmission draw-in groove 10, can increase the joint strength between magnetorheological suspensions and the transmission from axle 6 effectively, make its in-process that transmits power the phenomenon that relative slip can not appear, and to the setting of distance between its and transmission main shaft 1 for movable briquetting 11 is when compression promotion magnetorheological suspensions is inwards moved, can prevent the problem that magnetorheological suspensions from leaking out from transmission draw-in groove 10 effectively.

The use method and the working principle of the embodiment are as follows:

firstly, the power source is connected with the equipment in a transmission way through the transmission main shaft 1 and the transmission wheel 9 respectively, one end of the transmission connecting rod 12 is connected with the driving device in a threaded transmission way, meanwhile, the carbon brush 8 is in sliding friction contact with the independent power source, when the power is transmitted in a joint way, the driving mechanism is firstly utilized to drive the transmission connecting rod 12 to rotate, so that the movable pressing block 11 is driven to move inwards under the action of the threaded transmission, the magnetorheological fluid in the movable pressing block 11 is further extruded to move inwards, meanwhile, the inner installation groove 2 in the inner cavity of the reset spring 4 is compressed under the transmission action of the movable pressing rod 3, the transmission groove hole 5 blocked by the movable pressing rod 3 is communicated and contacted with the magnetorheological fluid, then, the independent power source is electrified through the carbon brush 8 to generate a magnetic field with certain strength, and the magnetorheological fluid in the cavity formed by the transmission main shaft 1 and the transmission driven shaft 6, The characteristic of low fluidity, so that a stably connected transmission shaft component is formed between the transmission main shaft 1 and the transmission driven shaft 6, and the transmission driven shaft 6 is driven to rotate at high speed; when power is separated, the driving mechanism is started again to drive the movable pressing block 11 to move outwards under the action of the threaded transmission of the transmission connecting rod 12, so that magnetorheological fluid losing the pressure effect extrudes the magnetorheological fluid outwards through the movable pressing rod 3 under the elastic force effect of the return spring 4, the outer surface of the movable pressing rod 3 is sealed and blocked with the transmission groove hole 5 in the transmission main shaft 1, then the current on the electromagnetic coil 7 is cut off to enable the electromagnetic coil to not generate a magnetic field, the magnetorheological fluid in an inner cavity formed by the transmission main shaft 1 and the transmission driven shaft 6 is changed into a suspension with low viscosity under the action of losing the magnetic field, relative rotation is enabled to occur between the transmission main shaft 1 and the transmission driven shaft 6, power transmission between the power source and the equipment is disconnected, and power connection and separation between the power.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.