阅读说明：本技术 一种带制动电流变离合器 (Electro-rheological clutch with brake ) 是由 刘旭辉 季怀超 姚行艳 徐彬 王智深 李芳� 倪修华 董振标 蒲美玲 于 2021-07-31 设计创作，主要内容包括：本发明涉及一种带制动电流变离合器,包括壳体、第一中心轴、第二中心轴以及设置在壳体内的主动盘、从动盘和制动盘,主动盘、从动盘和制动盘依次间隔且平行设置,且主动盘、从动盘和制动盘之间充满电流变液；壳体包括左端盖、套筒和右端盖,左端盖固定在套筒的左端,右端盖固定在套筒的右端；第一中心轴的左端与发动机飞轮固定连接,右端穿过左端盖伸入至壳体内,并与主动盘固定连接；第一中心轴与左端盖转动连接；第二中心轴为离合器的输出轴,左端穿过所述右端盖伸入至壳体内,并与从动盘固定连接；第二中心轴与右端盖转动连接；制动盘固定在右端盖的内侧,并且制动盘与右端盖之间设有绝缘层。(The invention relates to an electrorheological clutch with brake, which comprises a shell, a first central shaft, a second central shaft, a driving disc, a driven disc and a brake disc, wherein the driving disc, the driven disc and the brake disc are arranged in the shell; the shell comprises a left end cover, a sleeve and a right end cover, wherein the left end cover is fixed at the left end of the sleeve, and the right end cover is fixed at the right end of the sleeve; the left end of the first central shaft is fixedly connected with an engine flywheel, and the right end of the first central shaft penetrates through the left end cover to extend into the shell and is fixedly connected with the driving disc; the first central shaft is rotationally connected with the left end cover; the second central shaft is an output shaft of the clutch, and the left end of the second central shaft penetrates through the right end cover to extend into the shell and is fixedly connected with the driven plate; the second central shaft is rotatably connected with the right end cover; the brake disc is fixed at the inboard of right-hand member lid to be equipped with the insulating layer between brake disc and the right-hand member lid.)

1. The electrorheological clutch with the brake function is characterized by comprising a shell, a first central shaft, a second central shaft, a driving disc, a driven disc and a brake disc, wherein the driving disc, the driven disc and the brake disc are arranged in the shell, the driving disc, the driven disc and the brake disc are sequentially arranged at intervals in parallel, and electrorheological fluid is filled among the driving disc, the driven disc and the brake disc;

the shell comprises a left end cover, a sleeve and a right end cover, wherein the left end cover is fixed at the left end of the sleeve, and the right end cover is fixed at the right end of the sleeve;

the left end of the first central shaft is fixedly connected with an engine flywheel, and the right end of the first central shaft penetrates through the left end cover to extend into the shell and is fixedly connected with the driving disc; the first central shaft is rotatably connected with the left end cover;

the second central shaft is an output shaft of the clutch, and the left end of the second central shaft penetrates through the right end cover to extend into the shell and is fixedly connected with the driven disc; the second central shaft is rotatably connected with the right end cover;

the brake disc is fixed on the inner side of the right end cover, and an insulating layer is arranged between the brake disc and the right end cover.

2. The electrorheological clutch with brake of claim 1, wherein the first central shaft is rotatably connected with the left end cap through a left bearing, and a left insulating sleeve is arranged between the left bearing and the first central shaft;

the second center shaft is rotatably connected with the right end cover through a right bearing, and a right insulating sleeve is arranged between the right bearing and the second center shaft.

3. A current transducer clutch with brake as claimed in claim 2, wherein a sealing ring is provided between the left insulating sleeve and the first central shaft and between the right insulating sleeve and the second central shaft.

4. A current variable clutch with brake as claimed in claim 2, wherein the right end of the right end cap is further provided with a bearing end cap.

5. The electrorheological clutch with brake of claim 1, wherein the left end cover and the right end cover are fixedly connected through a fastening bolt, and the left end cover and the right end cover are respectively sealed with the fastening bolt through a sealing ring.

6. The current variable clutch with brake of claim 1, wherein the brake disc is fastened to the right end cap by a threaded fastener, and an insulating sleeve is disposed between the threaded fastener and the right end cap.

7. The electrorheological brake clutch of claim 1, wherein the driving disk, the driven disk and the brake disk are steel annular disks, and the driving disk and the driven disk are fixedly connected with the first central shaft and the second central shaft through splines, respectively.

8. A braked electrorheological clutch as claimed in claim 1 wherein the second central shaft is the input shaft of the gearbox.

9. A current variable clutch with brake as claimed in claim 1, wherein the driven disc is connected to a power source, and the power source is connected to the driving disc and the braking disc through switches, respectively.

10. A band brake electrorheological clutch of claim 1 wherein the first central axis and the second central axis are coaxial and spaced apart.

Technical Field

The invention relates to the technical field of clutches, in particular to an electrorheological clutch with a brake.

Background

In recent decades, with the rapid development of automobile technology, people have higher and higher requirements on the comprehensive use performance of automobiles. According to the statistics of the China automobile industry Association, the automobile output and sale amount in 2011 in China is higher than 1840 thousands of automobiles, so that various automobile companies in China perform a lot of basic correlation research and development work on various important parts of the automobile, the service performance and the service life of the parts are improved by optimally designing the parts and searching for substitute products, and the comprehensive performance of the automobile is improved.

As an important assembly of a vehicle drive train, the clutch plays a crucial role in the overall performance of the vehicle. At present, the structure of the traditional clutch has various defects which are difficult to overcome, and the combined process control technology is not perfect, so that the fault problem of the clutch not only has great influence on the quality of the automobile, but also damages the image of an enterprise. The failure of the clutch can be mainly classified into the following types: starting trembling, skidding, heavy pedals, abnormal sound and the like. The reasons for these failures are that the clutch engagement process is complicated, the disengagement is not complete and the control is difficult. The road traffic jam problem is increasingly obvious due to the annual increase of the number of automobiles, and meanwhile, higher requirements are put on the operation technology of drivers. Therefore, good control techniques play an important role in the operational reliability of the clutch. According to statistical data, the use frequency of the clutch can reach 8-10 times when the automobile runs for 1 kilometer in downtown, and frequent gear shifting not only brings physical consumption to a driver, but also brings thought burden, and leads to potential safety hazards.

Disclosure of Invention

In order to solve the problems, the invention provides an electrorheological clutch with a brake, which comprises a shell, a first central shaft, a second central shaft, a driving disc, a driven disc and a brake disc, wherein the driving disc, the driven disc and the brake disc are arranged in the shell, the driving disc, the driven disc and the brake disc are sequentially arranged at intervals and in parallel, and electrorheological fluid is filled among the driving disc, the driven disc and the brake disc;

the shell comprises a left end cover, a sleeve and a right end cover, wherein the left end cover is fixed at the left end of the sleeve, and the right end cover is fixed at the right end of the sleeve;

the left end of the first central shaft is fixedly connected with an engine flywheel, and the right end of the first central shaft penetrates through the left end cover to extend into the shell and is fixedly connected with the driving disc; the first central shaft is rotatably connected with the left end cover;

the second central shaft is an output shaft of the clutch, and the left end of the second central shaft penetrates through the right end cover to extend into the shell and is fixedly connected with the driven disc; the second central shaft is rotatably connected with the right end cover;

the brake disc is fixed on the inner side of the right end cover, and an insulating layer is arranged between the brake disc and the right end cover.

Preferably, the first central shaft is rotatably connected with the left end cover through a left bearing, and a left insulating sleeve is arranged between the left bearing and the first central shaft;

the second center shaft is rotatably connected with the right end cover through a right bearing, and a right insulating sleeve is arranged between the right bearing and the second center shaft.

Preferably, sealing rings are arranged between the left insulating sleeve and the first central shaft and between the right insulating sleeve and the second central shaft.

Preferably, the right end of the right end cover is further provided with a bearing end cover.

Preferably, the left end cover and the right end cover are fixedly connected through fastening bolts, and the left end cover and the right end cover are respectively sealed with the fastening bolts through sealing rings.

Preferably, the brake disc is fixedly connected with the right end cover through a threaded fastener, and an insulating sleeve is arranged between the threaded fastener and the right end cover.

Preferably, the driving disc, the driven disc and the brake disc are all steel annular disc-shaped, and the driving disc and the driven disc are fixedly connected with the first central shaft and the second central shaft through splines respectively.

Preferably, the second central shaft is an input shaft of the gearbox.

Preferably, the driven disc is connected with a power supply, and the power supply is respectively connected with the driving disc and the brake disc through switches.

Preferably, the first central shaft and the second central shaft are coaxial and arranged at intervals.

Compared with the prior art, the invention has the following technical effects:

1. the electrorheological clutch with the brake has the advantages of liquid transmission, soft engagement process, good controllability and short response time, so that the comfort of the automobile in the starting and gear shifting processes can be improved, and the electrorheological clutch with the brake has important significance for improving the overall performance of the automobile;

2. the driving disc and the driven disc with the braking electrorheological clutch are connected by liquid, and the friction in the engagement process is small, the heat productivity is small, so that the reliability of the transmission torque of the clutch can be improved, and the service life of the clutch can be prolonged;

3. the electro-rheological clutch with the brake can apply an electric field with certain voltage between the driven disc and the brake disc, and the electro-rheological effect quickly stops the driven disc, so that the brake without direct hard contact can be realized.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. In the drawings:

FIG. 1 is a cross-sectional view of a clutch with brake electrorheological fluid according to a preferred embodiment of the present invention;

fig. 2 is a schematic structural diagram of a current variable clutch with brake according to a preferred embodiment of the present invention;

fig. 3 is an electrical connection relationship between the driving disk, the driven disk and the driven disk provided by the preferred embodiment of the present invention.

Detailed Description

The current variable clutch with brake provided by the present invention will be described in detail with reference to fig. 1 to 3, and this embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments, and those skilled in the art can modify and color the current variable clutch without changing the spirit and content of the present invention.

Referring to fig. 1 and 2, a clutch with braking electrorheological fluid includes a housing, a first central shaft 8, a second central shaft 15, and a driving disc 9, a driven disc 10, and a braking disc 11 disposed in the housing, where the driving disc 9, the driven disc 10, and the braking disc 11 are sequentially spaced and disposed in parallel, and electrorheological fluid is filled between the driving disc 9, the driven disc 10, and the braking disc 11.

The casing includes left end lid 6, sleeve 5 and right-hand member lid 2, left end lid 6 sealed fixation is in the left end of sleeve 5, right-hand member lid 2 sealed fixation is in the right-hand member of sleeve 5. Specifically, the left end cover 6 and the right end cover 2 are fixedly connected through a fastening bolt 4, and the left end cover 6 and the right end cover 2 are respectively sealed with the fastening bolt 4 through an O-shaped sealing ring 3. The first central shaft 8 and the second central shaft 15 are coaxially arranged at intervals:

the left end of the first central shaft 8 is fixedly connected with an engine flywheel 7, the right end of the first central shaft penetrates through the left end cover 6 to extend into the shell and is fixedly connected with the driving disc 9, and in the embodiment, the driving disc 9 is fixedly arranged on the first central shaft 8 through a spline; the first central shaft 8 is rotatably connected with the left end cover 6 through a left bearing, a left insulating sleeve is arranged between the left bearing and the first central shaft 8, and an O-shaped sealing ring is arranged between the left insulating sleeve and the first central shaft 8; the right end of the left bearing is also provided with a left check ring.

The second central shaft 15 is an output shaft of the clutch and also an input shaft of the gearbox. The left end of the second central shaft 15 penetrates through the right end cover 2 and extends into the housing, and is fixedly connected with the driven disc 10, in this embodiment, the driven disc 10 is fixedly arranged on the second central shaft 15 through a spline; the second central shaft 15 is rotatably connected with the right end cover 2 through a right bearing, a right insulating sleeve is arranged between the right bearing and the second central shaft 15, and O-shaped sealing rings are arranged between the right insulating sleeve and the second central shaft 15; the left end of the right bearing is also provided with a right check ring. The right end of the right end cover 2 is also fixedly provided with a bearing end cover.

The sealing ring has the function of preventing the electrorheological fluid in the shell from leaking.

The brake disc 11 is fixed on the inner side of the right end cover 2, and an insulating layer 14 is arranged between the brake disc 11 and the right end cover 2. In the present embodiment, the brake disc 11 is fastened to the right end cover 2 by a threaded fastener 12, and an insulating sleeve 13 is disposed between the threaded fastener 12 and the right end cover 2.

In this embodiment, the driving disk 9, the driven disk 10 and the brake disk 11 are all steel annular disks, and the driving disk 9 and the driven disk 10 are fixedly connected with the first central shaft 8 and the second central shaft 15 through splines, respectively. Referring to fig. 3, the driven disc 10 is connected to a power source 16, the power source 16 is connected to the driving disc 9 and the braking disc 11 through a switch 17, and specifically, the driving disc 9, the driven disc 10 and the braking disc 11 are connected to the power source 16 and a control device through brushes. The control system controls the current of the clutch by controlling the voltage input by the power supply, thereby changing the viscosity of the electrorheological fluid.

The working principle of the invention is as follows:

the power of the engine is transmitted to the flywheel 7 and rotates together with the flywheel 7, so as to drive the first central shaft 8 and the driving disc 9 of the clutch to rotate (the shell of the clutch is fixed), and when no electric field is applied between the driving disc 9 and the driven disc 10, the viscosity of the electro-rheological fluid is low, the driving disc 9 is insufficient for driving the driven disc 10, so that the driven disc 10 is static; after a certain electric field is applied between the driving disk 9 and the driven disk 10, due to the electrorheological effect, electrorheological fluid between the two disks becomes thick from thin, the viscosity becomes large, and additional torque is generated, so that the driven disk 10 is driven to rotate; when the external electric field is changed from small to large, the viscosity of the electrorheological fluid between the two disks is continuously increased, namely the electrorheological fluid is changed from a liquid state to a solid state, the generated additional torque is increased, the rotating speed of the driven disk 10 is changed from small to large, and the continuous speed regulation is realized. The clutch driven plate 10 is connected with a second central shaft 15 (i.e. the output shaft of the clutch) by a common involute spline to transmit power to the gearbox through the output shaft. When braking, only the electronic switch 17 is needed to switch, an electric field with a certain voltage is added between the driven disc 10 and the brake disc 11, and the driven disc 10 is rapidly stopped through the current change effect, so that the purpose of braking without direct 'hard contact' is achieved. In the process, the torque transmitted by the electrorheological fluid can be continuously adjusted, so that the magnitude of the torque transmitted to the gearbox by the engine can be changed by changing the strength of an external electric field, and the output torque of the electrorheological clutch ranges from zero to the maximum output torque of the electrorheological fluid.