CN203868180U - Communicated magneto-rheological clutch - Google Patents

Abstract

The utility discloses a connected magneto-rheological clutch, which comprises a housing with a cavity inside, an input shaft connected to one end of the housing in rotation, and an output shaft fixedly connected to the other end of the housing. The input shaft extends into one end of the cavity. The middle left part is provided with at least two radially protruding left convex strips and right convex strips, and the left convex strips and right convex strips are arranged alternately along the outer circle of the input shaft; the housing includes a left disc, a left pole, The right pole and the right plate are fixed as a whole, and there is a ring groove for setting the coil between the left pole and the right pole, and a U-shaped groove connected to the left pole and the right pole, and pistons are respectively arranged at both ends of the U-shaped groove. , a magnetorheological fluid is provided between the two pistons. The utility has the advantage that after the magneto-rheological fluid becomes solid under the action of the coil magnetic field, the whole casing and the output shaft are rotated through the action of the piston and the convex strip on the input shaft, and multiple U-shaped Groove to increase the output torque, high degree of automation, high reliability clutch control is simple and reliable.

Description

connected magnetorheological clutch

technical field

The utility model relates to a connected magneto-rheological clutch.

Background technique

Magnetorheological fluids are widely used in aerospace/mechanical processing/precision engineering/construction/ Medical and other fields.

The magneto-rheological clutch realizes the functions of coupling and separation of the clutch through the control of the strength of the external magnetic field, and can even realize the stepless change control of the torque transmission. It overcomes the shortcomings of traditional clutches such as easy wear and high noise, with its simple structure, no mechanical wear, low noise, quick response within 10 milliseconds, low energy consumption, stepless speed regulation and more favorable combination with computer technology. The advantages of intelligent control have attracted extensive research by scholars and industries at home and abroad, and significant progress has been made in recent years. However, the problem of insufficient shear yield stress of magnetorheological fluid has been plagued by the development of magnetorheological fluid materials and technology since the birth of magnetorheological fluid. The clutch, because of its small transmission torque and bulky size, cannot meet the needs of industry.

Contents of the invention

The utility purpose is to provide a connected magneto-rheological clutch, which can effectively solve the problem that the existing magneto-rheological fluid clutch can only work in a shear mode and has low transmission torque.

In order to solve the above-mentioned technical problems, the utility model is realized through the following technical solutions: a connected magneto-rheological clutch, including a housing with a cavity inside, an input shaft connected to one end of the housing in rotation and one end extending into the cavity, and the housing The other end of the body is fixedly connected to the output shaft, the left part of the end of the input shaft extending into the cavity is provided with at least two radially protruding left ribs, and the input shaft extends into the end of the cavity The right part is provided with at least two right convex strips protruding radially, and the left convex strips and the right convex strips are arranged alternately along the outer circle of the input shaft;

The housing includes a left disc rotatably connected to the input shaft, a right disc fixedly connected to the output shaft, a left pole and a right pole juxtaposed between the left disc and the right disc, and the left pole and the right pole are annular , the left disc, the left pole, the right pole and the right disc are fixed as a whole, there is an annular groove for setting coils between the left pole and the right pole, and at least one L-shaped cross-section is opened on the left pole Left grooves, each left groove is provided with a left piston in contact with the left part of one end of the input shaft extending into the cavity, and the right pole is provided with the same number as the left groove and a reverse L-shaped cross section. Right grooves, each of the right grooves is provided with a right piston in contact with the right part of one end of the input shaft extending into the cavity, the left groove communicates with the right groove to form a U-shaped groove, and the left piston and the right piston Magnetorheological fluid is provided in the U-shaped groove between them.

Preferably, the cross-sections of the left convex strip and the right convex strip are consistent, and both are semicircular, triangular or quadrilateral; when the clutch is in a non-working state, it is convenient to trigger the reciprocating movement of the piston without getting stuck, and when the clutch is in a working state , and can give enough impetus to the piston.

Preferably, the input shaft is connected to the left disc through a left bearing, the part of the input shaft located in the cavity is provided with a step for locking the inner ring of the left bearing, and the left disc is also provided with a The end cover is provided with a convex ring that clamps the outer ring of the left bearing; one end of the input shaft is also connected to the right disc through the right bearing; it is convenient for fixing the input shaft so that it can work stably for a long time .

Compared with the prior art, the practical advantage of this device is that the device uses U-shaped grooves to communicate to control the movement of the two pistons. After the magnetorheological fluid becomes solid under the action of the coil magnetic field, it passes through the piston and the convex strip on the input shaft. The role of the whole shell and the output shaft to rotate, according to the load can be set to set a number of U-shaped slots to increase the output torque, high degree of automation, high reliability clutch control is simple and reliable.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility connected magneto-rheological clutch;

Fig. 2 is the schematic diagram when A-A sectional view clutch is in non-working state among Fig. 1;

Fig. 3 is a schematic diagram of the clutch in the working state of A-A sectional view in Fig. 1 .

Detailed ways

Referring to Fig. 1, it is an embodiment of the practical communication magneto-rheological clutch, the communication magneto-rheological clutch includes a housing with a cavity 19 inside, an input shaft 1 that is connected to one end of the housing and one end extends into the cavity 19, The output shaft 12 fixedly connected with the other end of the housing, the left part of the end of the input shaft 1 extending into the cavity 19 is provided with at least two radially protruding left ribs 15, the input shaft 1 extends The middle right part of one end in the cavity 19 is provided with at least two radially protruding right convex strips 16, and the left convex strips 15 and the right convex strips 16 are staggered along the outer circle of the input shaft 1; the left convex strips The strip 15 and the right convex strip 16 have the same cross-section, and both are semicircular or triangular or quadrilateral.

The housing includes a left disc 4 rotatably connected to the input shaft 1, a right disc 7 fixedly connected to the output shaft 12, a left pole 5 and a right pole 6 arranged side by side between the left disc 4 and the right disc 7, the The left pole 5 and the right pole 6 are annular, the left disc 4, the left pole 5, the right pole 6 and the right disc 7 are fixed as a whole, and a coil 13 is arranged between the left pole 5 and the right pole 6 Ring groove 20, at least one left groove 21 with an L-shaped cross section is opened on the left pole 5, and each left groove 21 is provided with a middle left part in contact with one end of the input shaft 1 extending into the cavity 19. The left piston 3, the right pole 6 is provided with a right groove 22 equal in number to the left groove 21 and having a reverse L-shaped cross section, each of the right grooves 22 is provided with a cavity 19 extending into the input shaft 1 The right piston 10 that is in contact with the right part in one end of the inside, the left groove 21 communicates with the right groove 22 to form a U-shaped groove 23, and the U-shaped groove 23 between the left piston 3 and the right piston 10 is provided with a magneto-rheological Liquid 9.

The input shaft 1 is connected to the left disc 4 through a left bearing 24, the part of the input shaft 1 located in the cavity 19 is provided with a step 26 for locking the inner ring of the left bearing 24, and the left disc 4 is also provided with a There is an end cover 2 to seal the left bearing 24, and the end cover 2 is provided with a collar 27 that blocks the outer ring of the left bearing 24;

As shown in Figure 2, when the coil 13 is not energized or has no magnetic field, the magnetorheological fluid 9 is in a liquid state. When the left convex strip 15 contacts the left piston 3, the left piston 3 is pushed by the left convex strip 15 The magnetorheological fluid 9 in the U-shaped groove 23, due to the incompressibility of the liquid, the right piston 10 protrudes downward under the action of the magnetorheological fluid 9, and the depth of the valley between two adjacent right convex strips 16 should be Greater than or equal to the length that the right piston 10 protrudes downwards. On the contrary, when the right piston 10 moves the left piston 3 downward under the effect of the right protruding strip 16, it goes round and round, and the clutch is in a non-working state.

As shown in Figure 3, after the coil 13 is energized to generate a magnetic field, the magnetorheological fluid 9 in the U-shaped groove 23 is affected by the magnetic field and changes from a liquid state to a quasi-solid state instantly, blocking the U-shaped groove 23, and the left and right pistons 10 stop at this time Movement, the piston is in a stuck state, and the left convex strip 15 will push against the left piston 3 or the right convex strip 16 will push against the right convex strip 16 to drive the housing to rotate, so that the output shaft 12 starts to rotate.

This device uses the U-shaped groove 23 to communicate to control the movement of the two pistons. After the magneto-rheological fluid 9 is turned into a solid state by the magnetic field of the coil 13, the entire housing and the output shaft are made 12 rotations, a plurality of U-shaped grooves 23 can be set according to load conditions to increase output torque, high degree of automation, high reliability, simple and reliable clutch control.

The above is only a specific embodiment of the utility, but the technical features of the utility are not limited thereto, and any changes or modifications made by those skilled in the art within the field of the utility are covered by the patent scope of the utility among.

Claims (3)

1. be communicated with magnetic rheological clutch, it is characterized in that: the housing of establishing cavity (19) in comprising, be rotationally connected with housing one end and the input shaft (1) in cavity (19) is stretched in one end, the output shaft (12) being fixedly connected with the housing the other end, described input shaft (1) stretches into left part in the one end in cavity (19) and is provided with at least two left raised lines (15) that radially protrude, described input shaft (1) stretches into right part in the one end in cavity (19) and is provided with at least two right raised lines (16) that radially protrude, described left raised line (15) and right raised line (16) are crisscross arranged along input shaft (1) cylindrical,

Described housing comprises the left dish (4) being rotationally connected with input shaft (1), the right dish (7) being fixedly connected with output shaft (12), be set up in parallel the left utmost point (5) and the right utmost point (6) between left dish (4) and right dish (7), the described left utmost point (5) and the right utmost point (6) are ring, described left dish (4), the left utmost point (5), the right utmost point (6) and right dish (7) are fixed as one, between the described left utmost point (5) and the right utmost point (6), have the annular groove (20) that coil (13) are set, on the described left utmost point (5), having at least one cross section is L shaped left groove (21), described in each, in left groove (21), be provided with the left piston (3) that in the one end in stretching into cavity (19) with input shaft (1), left part contacts, on the described right utmost point (6), have and equate with left groove (21) quantity and cross section is anti-L shaped right groove (22), described in each, in right groove (22), be provided with the right piston (10) that in the one end in stretching into cavity (19) with input shaft (1), right part contacts, described left groove (21) is communicated with formation U-groove bevel (23) with right groove (22), in U-groove bevel (23) between described left piston (3) and right piston (10), be provided with magnetic flow liquid (9).

2. connection magnetic rheological clutch as claimed in claim 1, is characterized in that: described left raised line (15) is consistent with right raised line (16) cross section, is all semicircle or triangle or quadrilateral.

3. connection magnetic rheological clutch as claimed in claim 1, it is characterized in that: between described input shaft (1) and left dish (4), by left bearing (24), be connected, the part that described input shaft (1) is positioned at cavity (19) is provided with the step (26) that blocks left bearing (24) inner ring, on described left dish (4), be also provided with the end cap (2) that seals left bearing (24), described end cap (2) is provided with the flange collar (27) of blocking left bearing (24) outer ring; One end of described input shaft (1) is also rotationally connected by right bearing (25) with right dish (7).