CN218598676U

CN218598676U - Pneumatic multi-plate friction clutch

Info

Publication number: CN218598676U
Application number: CN202222582531.9U
Authority: CN
Inventors: 张道东; 李春雨; 朱壮壮
Original assignee: Shanghai Handing Machinery Technology Co ltd
Current assignee: Shanghai Handing Machinery Technology Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-03-10
Anticipated expiration: 2032-09-28

Abstract

The application discloses pneumatic multi-disc friction clutch, pneumatic multi-disc friction clutch is connected with a power shaft, pneumatic multi-disc friction clutch includes a hookup axle sleeve, a rotatable piece and a accuse commentaries on classics component, the accuse changes the component and includes a drive assembly, a accuse moves subassembly and a plurality of piece that resets, drive assembly includes a plurality of rotation pieces and a plurality of area commentaries on classics piece, the accuse moves the subassembly and includes a fixing base and a moving piece, the fixing base have an air inlet and one with the sealed passageway of air inlet intercommunication, the utility model discloses can utilize the friction when rotating and taking the commentaries on classics piece laminating to realize power transmission. The large torque transmission is realized by arranging the plurality of rotating pieces and the plurality of belt rotating pieces to multiply the transmitted torque, and the volume is increased only to a small extent in the axial direction.

Description

Pneumatic multi-plate friction clutch

Technical Field

The utility model relates to a friction clutch technical field especially relates to pneumatic multi-disc friction clutch.

Background

A friction clutch is one of the common types of clutches, and mainly includes a driving part, a driven part, a pressing part, and an operating part, the driving part, the driven part, and the pressing part are basic structures that ensure that the clutch is in a coupled state and can transmit power, the driving part is connected with a power input device, the driven part is connected with a power output device, and the operating part is a device that separates the clutch. When the power transmission device is used, the operating part controls the friction surface of the driving part and the friction surface of the driven part to be combined or separated through the pressing part so as to realize connection or disconnection of power transmission between the power input device and the power output device.

The existing friction clutch is mostly designed in a single-piece mode, namely only one pair of friction surfaces exists, the torque which can be transmitted by the friction clutch is small, and if the friction clutch is applied to machinery such as medium and heavy automobiles, the situation that power cannot be effectively transmitted occurs. Therefore, for the purpose of transmitting large torque, the friction surface of the friction clutch is usually designed to be relatively large, which makes the local radial dimension of the friction clutch relatively large, and further increases the volume of the friction clutch, so that a larger installation space is required during installation, and the use place is limited.

SUMMERY OF THE UTILITY MODEL

An advantage of the utility model is that a pneumatic multi-disc friction clutch is provided, the utility model discloses can utilize the friction when rotating the piece and taking the piece laminating to realize power transmission. The large torque transmission is realized by arranging the plurality of rotating pieces and the plurality of belt rotating pieces to multiply the transmitted torque, and the volume is increased only to a small extent in the axial direction.

The utility model discloses an advantage lies in providing pneumatic multi-disc friction clutch, the utility model discloses a rotate the piece and separate with the area commentaries on classics piece, ensure can not take place invalid wearing and tearing when using, also be favorable to rotating the piece simultaneously and take a commentaries on classics heat dissipation, prolong pneumatic multi-disc friction clutch's life.

An advantage of the utility model is that a pneumatic multi-disc friction clutch is provided, the utility model discloses a rotate the piece and take the commentaries on classics piece and all adopt splined connection to dismantle the maintenance.

An advantage of the utility model is that a pneumatic multi-disc friction clutch is provided, the utility model discloses can the elasticity reset fast, increase the flexibility of using.

In order to achieve the utility model discloses above at least one advantage, the utility model provides a pneumatic multi-disc friction clutch, pneumatic multi-disc friction clutch is connected with a power shaft, pneumatic multi-disc friction clutch includes:

the connecting shaft sleeve is sleeved on the power shaft and can be driven by the power shaft to rotate;

the rotatable part is coaxially sleeved on the coupling shaft sleeve, the coupling shaft sleeve can rotate relative to the rotatable part, and a moving space and an inlet communicated with the moving space are formed between the rotatable part and the outer wall of the coupling shaft sleeve;

a rotation control member sleeved to the coupling boss and located adjacent to the rotatable piece, the rotation control member comprising:

a transmission assembly including a plurality of rotation members mounted to the coupling sleeve and movable in the movement space in an axial direction of the coupling sleeve, and a plurality of belt rotating members rotatable together with the coupling sleeve, the belt rotating members being mounted to the rotatable members and movable in the movement space in a direction parallel to the axial direction of the coupling sleeve, the belt rotating members being spaced apart from the rotation members in a direction in which the inlet extends toward the movement space, and two opposite surfaces of the belt rotating members and the rotation members being rough, the coupling sleeve rotating the rotatable members by a frictional force between the rotation members and the belt rotating members when the rotation members or the belt rotating members near the inlet are pushed so that each of the rotation members abuts at least one of the belt rotating members and integrally presses the rotatable members;

the control moving assembly comprises a fixed seat and a moving part, the fixed seat is sleeved on the connecting shaft sleeve and is provided with an air inlet and a sealing channel communicated with the air inlet, the air inlet is arranged to be capable of introducing air, the moving part is arranged at one end of the sealing channel far away from the air inlet and is arranged to be capable of moving on the outer surface of the connecting shaft sleeve along the sealing channel, after the air is introduced into the sealing channel from the air inlet, the moving part is acted by air pressure in the sealing channel to move close to the transmission assembly along the direction of the inlet extending to the moving space and apply pressure to the transmission assembly, so that the rotating part and the belt rotating part are mutually attached and integrally apply pressure to the rotatable part;

a plurality of pieces that reset, reset the piece by movably set up in the outside of hookup axle sleeve, rotate the piece with take to change the piece arbitrary with it sets up to reset a piece interval, reset the piece set up can rotate the piece with take to change the piece laminating and whole to take place elastic deformation when can changing piece and exerting pressure, just it can reset to reset the piece transmission assembly does not receive external force to bulldoze under the condition of effect.

According to an embodiment of the present invention, the pneumatic multi-disc friction clutch defines a coupling state and a decoupling state, the multi-disc friction clutch is set to be capable of switching between the coupling state and the decoupling state, when the pneumatic multi-disc friction clutch is in the coupling state, the moving member receives the effect of the air pressure in the sealing channel and moves close to the transmission assembly and extrudes the transmission assembly, so that the transmission assembly moves in the direction in which the inlet extends to the movement space and drives the resetting member to move synchronously, so that the transmission assembly and the whole body of the resetting member apply pressure to the rotating member, at this time, the rotating member is adjacent to the belt rotating member, the resetting member elastically deforms, the coupling sleeve drives the rotating member to rotate by the friction effect between the rotating member and the belt rotating member, when the pneumatic multi-disc friction clutch is in the decoupling state, the gas in the sealing channel is discharged, the moving member receives the negative pressure and/or the elastic effect of the resetting member and resets, and at the rotating member and the elastic effect of the rotating member and the shaft sleeve do not drive the rotating member by the rotation of the driving member.

According to the utility model discloses an embodiment pneumatic multi-disc friction clutch is in during the disengagement state, the piece that resets is set up can with rotate the piece with the piece that rotates is separated.

According to the utility model discloses an embodiment, pneumatic multi-disc friction clutch is in during the combined state, rotate piece and part the laminating of taking the commentaries on classics piece, reset the piece by movably cup joint in can changeing the piece, reset with take the commentaries on classics piece interval to set up and be located rotate the piece with can change between the piece.

According to the utility model discloses an embodiment, pneumatic multi-disc friction clutch is in during the bonding state, take and change piece and part rotate the piece laminating, reset by movably cup joint in the coupling sleeve, reset with rotate a setting of interval and be located take change piece with between the coupling sleeve.

According to the utility model discloses an embodiment, the fixing base is fixed in a fixed position, the moving member orientation a side of drive assembly is smooth, and with the moving member is adjacent the rotation piece or take the rotation piece orientation a side of moving member is smooth the moving member to drive assembly exerts pressure and makes the coupling shaft cover can drive when drive assembly rotates, the moving member with the fixing base all keeps static.

According to the utility model discloses an embodiment, the fixing base is fixed in a fixed position, the moving member still includes one and receives the pressure part and a splenium, receive the pressure part by movably install in sealed passageway, the splenium rotationally connect in receive the pressure part, the splenium is kept away from receive a side of pressure part is crude, and with the moving member is adjacent rotate the piece or take the commentaries on classics piece orientation a side of moving member is crude, the splenium is set up can be to the adjacent side rotate the piece or when taking the commentaries on classics piece to exert pressure by rotate the piece or take the commentaries on classics piece to drive and be relative receive the rotation of pressure part.

According to the utility model discloses an embodiment, pneumatic multi-disc friction clutch still includes a seal assembly, seal assembly includes a first sealing member and a second sealing member, the size of first sealing member is less than the size of second sealing member, first sealing member installed sealed passageway is close to the inner wall of hookup axle sleeve axis one side with receive between the pressure portion, the second sealing member installed sealed passageway is kept away from the inner wall of hookup axle sleeve axis one side with receive between the pressure portion, first sealing member with the second sealing member be used for with receive the pressure portion with fixing base sealing connection.

According to the utility model discloses an embodiment, pneumatic multi-disc friction clutch still includes a bearing assembly, bearing assembly includes an at least first bearing, first bearing install in the coupling shaft sleeve with between the rotatable piece and with the coaxial setting of coupling shaft sleeve, first bearing is used for supporting rotatable piece and reduction when coupling shaft sleeve rotates its with frictional force between the rotatable piece, bearing assembly still includes a second bearing, the second bearing install in the fixing base with between the coupling shaft sleeve and with the coaxial setting of coupling shaft sleeve, the second bearing is used for supporting the fixing base and reduces when coupling shaft sleeve rotates its with frictional force between the fixing base, bearing assembly still includes a third bearing, the third bearing be installed in receive the pressure portion with between the pressure portion and with the coaxial setting of coupling shaft sleeve, the third bearing is used for supporting receive the pressure portion and reduce when the pressure portion rotates its with frictional force between the pressure portion.

According to the utility model discloses an embodiment, the surface of coupling sleeve is sunken to form two mounted positions, two the mounted position respectively with but the rotating part with the fixing base corresponds, first bearing with the second bearing is installed respectively in two the mounted position, pneumatic multi-disc friction clutch still includes a retaining ring subassembly, the retaining ring subassembly includes an at least first retaining ring, first retaining ring be installed in the coupling sleeve with but between the rotating part and be located the adjacent position of first bearing, first retaining ring is used for hindering first bearing takes place axial displacement and shifts out the mounted position, the retaining ring subassembly includes an at least second retaining ring, the second retaining ring be installed in the fixing base with between the coupling sleeve and be located the adjacent position of second bearing, the second retaining ring is used for hindering the second bearing takes place axial displacement and shifts out the mounted position.

Drawings

Fig. 1 shows a schematic structural view of a pneumatic multi-disc friction clutch according to the present invention.

Fig. 2 shows an exploded view of the pneumatic multi-disc friction clutch according to the present invention.

Fig. 3 shows a structural cross-sectional view of the pneumatic multi-disc friction clutch according to the present invention in a disengaged state.

Fig. 4 shows a cross-sectional view of the pneumatic multi-plate friction clutch according to the present invention in the engaged state.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning "at least one" or "one or more," i.e., that a quantity of one element may be one in one embodiment, while a quantity of another element may be plural in other embodiments, and the terms "a" and "an" should not be interpreted as limiting the quantity.

Referring to fig. 1 to 4, a pneumatic multi-plate friction clutch according to a preferred embodiment of the present invention, which is connected to a power shaft, will be described in detail below.

The pneumatic multi-plate friction clutch comprises a connecting shaft sleeve 10 and a rotatable part 20, wherein the connecting shaft sleeve 10 is sleeved on the power shaft and can be driven by the power shaft to rotate. The rotatable part 20 is coaxially sleeved on the coupling sleeve 10, and the coupling sleeve 10 can rotate relative to the rotatable part 20.

The pneumatic multiplate clutch further includes a rotation control member 30, the rotation control member 30 being sleeved on the coupling sleeve 10 and located adjacent to the rotatable member 20.

The pneumatic multi-plate friction clutch defines an engaged state and a disengaged state, and is configured to be switchable between the engaged state and the disengaged state. When the pneumatic multi-plate friction clutch is in the engaged state, the coupling sleeve 10 is configured to rotate the rotatable member 20 by the rotation control member 30; when the pneumatic multi-plate friction clutch is in the disengaged state, the rotation control member 30 disconnects the power transmission between the coupling sleeve 10 and the rotatable member 20, and at this time, the coupling sleeve 10 cannot drive the rotatable member 20 to rotate through the rotation control member 30.

Referring to fig. 2 to 4, a moving space 201 and an inlet 202 communicating with the moving space 201 are formed between the rotatable member 20 and the outer wall of the coupling boss 10. The rotation control member 30 includes a transmission assembly 31, and the transmission assembly 31 is movably installed in the moving space 201.

The transmission assembly 31 includes a plurality of rotation members 311 and a plurality of belt rotation members 312, the rotation members 311 are mounted on the coupling sleeve 10 and can move in the moving space 201 along the axial direction of the coupling sleeve 10, and the rotation members 311 can rotate together with the coupling sleeve 10. The belt rotating member 312 is mounted to the rotating member 20 and is movable in the moving space 201 in a direction parallel to the axial direction of the coupling boss 10. The rotating member 312 and the rotating member 311 are arranged at intervals along the direction in which the inlet 202 extends to the moving space 201, and two opposite surfaces of the rotating member 312 and the rotating member 311 are rough.

When the rotating members 311 or the belt rotating members 312 near the inlet 202 are pushed so that each rotating member 311 is attached to at least one belt rotating member 312 and integrally presses the rotating member 20, the coupling sleeve 10 drives the rotating member 20 to rotate by the friction force between the rotating members 311 and the belt rotating members 312, and the pneumatic multi-plate friction clutch is in the coupled state.

It is worth mentioning that, by providing a plurality of the rotating members 311 and a plurality of the belt rotating members 312, the torque transmitted from the coupling sleeve 10 to the rotating member 20 is multiplied, and thus a large torque transmission is realized. In addition, because the transmission assembly 31 is arranged in the moving space 201, the volume is only increased to a small extent in the axial direction, and the radial dimension is smaller than that of the traditional single-plate clutch capable of transmitting large torque, so that the clutch is more suitable for installation occasions with small space.

Preferably, the rotating member 311 and the coupling sleeve 10, and the belt rotating member 312 and the rotatable member 20 are all connected by splines, so that the rotating member 311 and the belt rotating member 312 can be disassembled and assembled, and the convenience of maintenance is increased.

Preferably, the rotating member 311 and the belt rotating member 312 are both in a ring shape.

Further, the rotation control member 30 further includes a control assembly 32, the control assembly 32 is installed at a position adjacent to the transmission assembly 31, the control assembly 32 is connected to an external air source, and the control assembly 32 is configured to press the transmission assembly 31 to make the rotation member 311 and the belt rotation member 312 fit together, so that the coupling sleeve 10 drives the rotatable member 20 to rotate through the transmission assembly 31.

The displacement control assembly 32 includes a fixed seat 321 and a moving member 322, the fixed seat 321 is sleeved on the coupling shaft sleeve 10, the fixed seat 321 has an air inlet 32101 and a sealing channel 32102 communicated with the air inlet 32101, the air inlet 32101 is configured to allow air to enter, and the moving member 322 is located at one end of the sealing channel 32102 far from the air inlet 32101 and is configured to be able to move on the outer surface of the coupling shaft sleeve 10 along the sealing channel 32102. After the air is introduced into the sealing channel 32102 through the air inlet 32101, the moving member 322 moves closer to the transmission assembly 31 and applies pressure to the transmission assembly 31 along the direction in which the inlet 202 extends toward the moving space 201 under the action of the air pressure in the sealing channel 32102, so that the rotating member 311 and the belt rotating member 312 are attached to each other and integrally apply pressure to the rotatable member 20, at this time, the coupling sleeve 10 can drive the rotatable member 20 to rotate through the transmission assembly 31, and the pneumatic multi-plate friction clutch is in the coupled state.

Preferably, the fixing seat 321 is fixed at a fixed position, which makes the fixing seat 321 keep still when the coupling sleeve 10 rotates or when the coupling sleeve 10 drives the rotatable part 20 to rotate through the friction force between the rotatable part 311 and the belt rotatable part 312, so as to reduce the load of the coupling sleeve 10, increase the flexibility of the pneumatic multi-plate friction clutch during use, and facilitate the external air supply to introduce air into the fixing seat 321.

In one embodiment, a side of the moving member 322 facing the transmission assembly 31 is smooth, and a side of the rotating member 311 or the rotating member 312 adjacent to the moving member 322 facing the moving member 322 is smooth. Thus, when the moving member 322 is moved by the air pressure to press the rotating member 311 or the belt rotating member 312, the adjacent rotating member 311 and the belt rotating member 312 are attached to each other and press the rotatable member 20 as a whole, and the transmission assembly 31 is driven by the coupling sleeve 10 to rotate, at this time, the friction between the moving member 322 and the rotating member 311 or the belt rotating member 312 is too small to rotate together, the control and shift assemblies 32 are kept static, the load of the coupling sleeve 10 is further reduced, and the flexibility of use is higher.

Further, the moving member 322 further includes a pressed portion 3221 and a pressing portion 3222, the pressed portion 3221 is movably mounted to the sealing channel 32102, the pressing portion 3222 is rotatably connected to the pressed portion 3221, a side of the pressing portion 3222 away from the pressed portion 3221 is rough, and a side of the rotating member 311 or the rotating member 312 adjacent to the moving member 322 facing the moving member 322 is rough.

When the moving member 322 moves closer to the transmission assembly 31 along the sealing channel 32102, the pressing portion 3222 abuts against and presses the adjacent rotating member 311 or the belt rotating member 312, so that the adjacent rotating member 311 and the belt rotating member 312 abut against and integrally press the rotatable member 20, so that the transmission assembly 31 is driven by the coupling sleeve 10 to rotate, and at this time, the pressing portion 3222 is driven by the adjacent rotating member 311 or the belt rotating member 312 to rotate relative to the pressure portion 3221.

The rotation control member 30 further includes a plurality of restoring members 33, the restoring members 33 are movably disposed at the outer side of the coupling sleeve 10, and any one of the rotation member 311 and the belt rotation member 312 is disposed at a distance from the restoring members 33. Reset piece 33 is set up can be in rotate piece 311 with take the laminating of commentaries on classics piece 312 and whole to take place elastic deformation when rotatable 20 exerts pressure, and reset piece 33 can be in transmission assembly 31 does not receive external force pushing and pressing effect's the condition quick reset transmission assembly 31 increases the flexibility that pneumatic multi-disc friction clutch used for follow-up clutching operation's goes on.

Preferably, the restoring element 33 is implemented as a spring plate.

It is worth mentioning that when the pneumatic multi-plate friction clutch is in the separation state, the reset member 33 is disposed to separate the rotating member 311 from the belt rotating member 312, so as to avoid unnecessary friction between the components, and at the same time, the transmission assembly 31 is also facilitated to dissipate heat, thereby prolonging the service life of the pneumatic multi-plate friction clutch.

Preferably, when the pneumatic multi-plate friction clutch is in the engaged state, the rotating member 312 is engaged with a portion of the rotating member 311. The reset member 33 is movably sleeved on the coupling sleeve 10, the reset member 33 and the rotating member 311 are arranged at an interval and are located between the belt rotating member 312 and the coupling sleeve 10, and at this time, the reset members 33 can reset the transmission assembly 31 together and do not interfere with the attachment of the rotating member 311 and the belt rotating member 312.

In a deformable manner, when the air-operated multi-plate friction clutch is in the engaged state, the rotating member 311 abuts against a part of the belt rotating member 312. The reset member 33 is movably sleeved on the rotatable member 20, the reset member 33 and the belt rotatable member 312 are arranged at intervals and are located between the rotatable member 311 and the rotatable member 20, and at this time, the reset members 33 can reset the transmission assembly 31 together and do not interfere with the attachment of the rotatable member 311 and the belt rotatable member 312.

Specifically, when the pneumatic multi-plate friction clutch is in the engaged state, the moving member 322 moves close to the transmission assembly 31 and presses the transmission assembly 31 under the action of the air pressure in the sealing channel 32102, so that the transmission assembly 31 moves along the direction in which the inlet 202 extends toward the moving space 201 and drives the resetting member 33 to move synchronously, so that the transmission assembly 31 and the resetting member 33 integrally apply pressure to the rotatable member 20, at this time, the adjacent rotating member 311 and the belt rotating member 312 are attached, the resetting member 33 is elastically deformed, and the coupling sleeve 10 drives the rotatable member 20 to rotate through the friction between the rotating member 311 and the belt rotating member 312.

When the pneumatic multi-plate friction clutch is in the disengaged state, the gas in the sealing channel 32102 is exhausted, the moving member 322 is reset by the negative pressure and/or the elastic action of the reset member 33, and the rotating member 311 and the belt rotating member 312 are reset by the elastic action of the reset member 33, at this time, the reset member 33 separates the rotating member 311 and the belt rotating member 312, and the coupling sleeve 10 does not drive the rotatable member 20 to rotate through the transmission assembly 31.

Referring to fig. 2 to 4, the pneumatic multi-plate friction clutch further includes a sealing assembly 40, the sealing assembly 40 is installed between the inner wall of the sealing channel 32102 and the pressure receiving portion 3221, and the sealing assembly 40 is configured to seal the pressure receiving portion 3221 and the fixing seat 321 to prevent gas in the sealing channel 32102 from flowing out from a gap between the pressure receiving portion 3221 and the inner wall of the sealing channel 32102.

The sealing assembly 40 includes a first sealing member 41 and a second sealing member 42, the size of the first sealing member 41 is smaller than that of the second sealing member 42, the first sealing member 41 is installed between the inner wall of the sealing passage 32102 on the side close to the central axis of the coupling sleeve 10 and the pressure receiving portion 3221, and the second sealing member 42 is installed between the inner wall of the sealing passage 32102 on the side away from the central axis of the coupling sleeve 10 and the pressure receiving portion 3221. The first sealing member 41 and the second sealing member 42 are used for sealing and connecting the pressure receiving portion 3221 and the fixing seat 321.

Preferably, the first seal 41 and the second seal 42 are each embodied as a sealing ring.

Referring to fig. 2 to 4, the air multi-plate friction clutch further includes a bearing assembly 50, the bearing assembly 50 being installed at an outer wall of the coupling sleeve 10, the bearing assembly 50 serving to reduce friction between parts so that the air multi-plate friction clutch operates stably.

The bearing assembly 50 includes at least one first bearing 51, the first bearing 51 is installed between the coupling sleeve 10 and the rotatable member 20 and is coaxially disposed with the coupling sleeve 10, and the first bearing 51 is used for supporting the rotatable member 20 and reducing a frictional force between the rotatable member 20 and the coupling sleeve 10 when the coupling sleeve 10 rotates.

Preferably, the first bearings 51 are provided in two, and the first bearings 51 are arranged side by side to stably support the rotatable member 20.

The bearing assembly 50 further includes a second bearing 52, the second bearing 52 is installed between the fixed seat 321 and the coupling sleeve 10 and is coaxially disposed with the coupling sleeve 10, and the second bearing 52 is used for supporting the fixed seat 321 and reducing the friction force between the coupling sleeve 10 and the fixed seat 321 when the coupling sleeve 10 rotates.

The bearing assembly 50 further includes a third bearing 53, the third bearing 53 is installed between the pressure portion 3221 and the pressing portion 3222 and is coaxially arranged with the coupling sleeve 10, and the third bearing 53 is configured to support the pressure portion 3221 and reduce friction between the pressure portion 3222 and the pressure portion 3221 during rotation, so as to ensure that the pressure portion 3222 can smoothly rotate relative to the pressure portion 3221.

Referring to fig. 2 to 4, the air actuated multi-plate friction clutch further includes a retainer ring assembly 60, the retainer ring assembly 60 being mounted to an outer wall of the coupling sleeve 10, the retainer ring assembly 60 being used to limit the axial movement of the bearing assembly 50.

The outer surface of the coupling sleeve 10 is recessed to form two mounting positions, the two mounting positions correspond to the rotatable member 20 and the fixed seat 321, respectively, and the first bearing 51 and the second bearing 52 are mounted at the two mounting positions, respectively.

The retainer ring assembly 60 includes at least a first retainer ring 61, the first retainer ring 61 is installed between the coupling sleeve 10 and the rotatable member 20 at a position adjacent to the first bearing 51, and the first retainer ring 61 is used for blocking the first bearing 51 from moving axially out of the installation position, so that the first bearing 51 is stably assembled.

Preferably, the first retaining rings 61 are provided in two and are designed in different sizes, and the two first retaining rings 61 are respectively mounted at different positions in the radial direction of the first bearing 51 to jointly overcome the play force of the first bearing 51 tending to move out of the mounting position and ensure that the first bearing 51 remains stationary.

The retainer ring assembly 60 includes at least one second retainer ring 62, the second retainer ring 62 is installed between the fixing seat 321 and the coupling sleeve 10 and located adjacent to the second bearing 52, and the second retainer ring 62 is used for blocking the second bearing 52 from moving axially out of the installation position, so that the second bearing 52 is stably assembled.

Preferably, the second retainer ring 62 is provided in two and is designed to have different sizes, the two second retainer rings 62 are provided on both sides of the second bearing 52, and the two second retainer rings 62 are used to collectively define the second bearing 52 in the mounting position to prevent the second bearing 52 from shifting out of the mounting position.

A method of operating a pneumatic multi-plate friction clutch is now provided, comprising the steps of:

(A) Gas is introduced into the sealing channel 32102 through the gas inlet 32101, and the moving member 322 is moved along the sealing channel 32102 to the outer surface of the coupling sleeve 10 and close to the transmission assembly 31 located in the moving space 201;

(B) Either the rotating member 311 or the belt rotating member 312 close to the inlet 202 is pushed by the moving member 322 to move and integrally move with the returning member 33 to apply pressure to the rotatable member 20, at this time, each rotating member 311 is attached to at least one belt rotating member 312, the returning member 33 is elastically deformed, and the coupling sleeve 10 can drive the rotatable member 20 to rotate through the transmission assembly 31;

(C) The gas in the sealing channel 32102 is exhausted from the gas inlet 32101, at this time, the moving member 322 is reset by the negative pressure and/or the elastic action of the resetting member 33, the transmission assembly 31 is reset by the elastic action of the resetting member 33, and at this time, the coupling sleeve 10 does not drive the rotatable member 20 to rotate through the transmission assembly 31.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The advantages of the present invention are already complete and effectively realized. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims

1. Pneumatic multi-disc friction clutch, pneumatic multi-disc friction clutch is connected with a power shaft, its characterized in that, pneumatic multi-disc friction clutch includes:

2. The pneumatic multi-plate friction clutch according to claim 1, wherein the pneumatic multi-plate friction clutch defines an engaged state and a disengaged state, the multi-plate friction clutch is configured to be switchable between the engaged state and the disengaged state, and when the pneumatic multi-plate friction clutch is in the engaged state, the moving member moves closer to the transmission assembly and presses the transmission assembly by the air pressure in the sealing passage, so that the transmission assembly moves in a direction in which the inlet extends toward the movement space and drives the reset member to move synchronously, so that the transmission assembly and the reset member integrally apply pressure to the rotatable member, and when the adjacent rotating member and the belt rotating member are in contact with each other, the reset member is elastically deformed, the coupling sleeve drives the rotatable member to rotate by the friction between the rotating member and the belt rotating member, and when the pneumatic multi-plate friction clutch is in the disengaged state, the gas in the sealing passage is discharged, and the moving member is reset by the elastic action of the negative pressure of the rotating member and/or the reset member, and when the rotating member and the rotatable member are not driven by the elastic action of the transmission sleeve, the reset member is not driven by the elastic coupling action of the transmission sleeve.

3. The pneumatic multi-plate friction clutch of claim 2, wherein said reset member is configured to space said rotating member from said rotating member when said pneumatic multi-plate friction clutch is in said disengaged state.

4. The pneumatic multi-plate friction clutch of claim 3 wherein, when the pneumatic multi-plate friction clutch is in the engaged state, the rotating member engages a portion of the rotatable member, the reset member is movably coupled to the rotatable member, and the reset member is spaced from the rotatable member and is disposed between the rotating member and the rotatable member.

5. The pneumatic multi-plate friction clutch of claim 3, wherein when said pneumatic multi-plate friction clutch is in said engaged state, said rotating member is engaged with a portion of said rotating member, said reset member is movably sleeved on said coupling sleeve, said reset member is spaced from said rotating member and is disposed between said rotating member and said coupling sleeve.

6. The air actuated multi-plate friction clutch of claim 1 wherein said fixed mount is fixed in a fixed position, said moving member is smooth on a side facing said drive assembly and said rotating member or said rotating member adjacent to said moving member is smooth on a side facing said moving member, said moving member and said fixed mount both remaining stationary while said moving member applies pressure to said drive assembly to cause said coupling sleeve to rotate said drive assembly.

7. The air-actuated multi-plate friction clutch according to claim 1, wherein the fixed seat is fixed at a fixed position, the moving member further includes a pressed portion movably installed in the sealed passage, and a pressing portion rotatably connected to the pressed portion, a side of the pressed portion remote from the pressed portion is rough, and a side of the rotating member or the belt rotating member adjacent to the moving member is rough toward the moving member, and the pressing portion is configured to be capable of pressing the rotating member or the belt rotating member at an adjacent side while being driven by the rotating member or the belt rotating member to rotate relative to the pressed portion.

8. The air actuated multi-plate friction clutch of claim 7 further comprising a seal assembly including a first seal member and a second seal member, the first seal member being smaller in size than the second seal member, the first seal member being mounted between the inner wall of the seal passage on the side closer to the central axis of the coupling sleeve and the pressure receiving portion, the second seal member being mounted between the inner wall of the seal passage on the side farther from the central axis of the coupling sleeve and the pressure receiving portion, the first seal member and the second seal member being adapted to sealingly connect the pressure receiving portion and the fixed seat.

9. The air actuated multi-plate friction clutch according to claim 8 further comprising a bearing assembly including at least a first bearing installed between said coupling sleeve and said rotatable member and coaxially disposed with said coupling sleeve, said first bearing for supporting said rotatable member and reducing a frictional force between said coupling sleeve and said rotatable member when said coupling sleeve rotates, said bearing assembly further including a second bearing installed between said fixed seat and said coupling sleeve and coaxially disposed with said coupling sleeve, said second bearing for supporting said fixed seat and reducing a frictional force between said coupling sleeve and said fixed seat when said coupling sleeve rotates, said bearing assembly further including a third bearing installed between said pressure receiving portion and said pressure applying portion and coaxially disposed with said coupling sleeve, said third bearing for supporting said pressure receiving portion and reducing a frictional force between said pressure applying portion and said pressure receiving portion when said pressure applying portion rotates.

10. The air actuated multi-plate friction clutch of claim 9 wherein said outer surface of said coupling sleeve is recessed to define two mounting locations, said two mounting locations corresponding to said rotatable member and said fixed base, said first bearing and said second bearing being mounted at said two mounting locations, respectively, said air actuated multi-plate friction clutch further comprising a retainer ring assembly, said retainer ring assembly comprising at least a first retainer ring, said first retainer ring being mounted between said coupling sleeve and said rotatable member and positioned adjacent to said first bearing, said first retainer ring being adapted to block axial movement of said first bearing out of said mounting locations, said retainer ring assembly comprising at least a second retainer ring, said second retainer ring being mounted between said fixed base and said coupling sleeve and positioned adjacent to said second bearing, said second retainer ring being adapted to block axial movement of said second bearing out of said mounting locations.