Clutch

FIELD: mechanical engineering; transport engineering.

SUBSTANCE: invention relates to tractors and it can be used in mechanisms provided with clutch with power takeoff to transmission and power takeoff shaft or other auxiliary mechanism. Clutch has cover plate secured on flywheel, pressure plate connected with cover plate by tangential plates, driven disk with hub connected to said disk which is installed between pressure plate and flywheel, diaphragm spring installed on cover plate, and coupling plate with hub. Coupling plate has radial lobes and it is arranged between diaphragm spring and pressure plate, being connected by ends of lobs with cover plate. Lobes of coupling plate are arranged in posts made in cover plate.

EFFECT: reduced axial size of clutch, improved manufacturability and facilitated centering of hub of coupling plate.

6 cl, 4 dwg

 

The invention relates primarily to the field of engineering and tractor and used gears with the clutch with PTO on the transmission and the PTO or other supporting mechanism.

Known clutch (1)with the clutch disc with the main hub and the hub additional PTO, which is connected through a connecting plate with cover (support plate). The binding plate of their axial projections passes through openings in the diaphragm spring and is connected to the casing by means of the rivet connection.

The disadvantage of this design is that the weakening of the diaphragm spring due to run additional holes, connection axial protrusions of the connecting element with the casing by means of rivets unreliable, design nerazborny and hinders the possibility of replacing the connecting plate drive PTO.

The closest is the design of the clutch mechanism (2), containing the cover (bearing drive)attached to the flywheel, the clutch disc connected to the support plate by tangential plates, clutch disc with attached hub, installed between the pressure plate and flywheel, a diaphragm spring, is installed on the supporting disk preload in relation to on the a lot of disk a connecting plate attached to it hub, made with radiating petals and disposed between the diaphragm spring and the pressure disk, and a connecting plate ends its petals are connected to the support plate. While supporting the disc secured to the flywheel by means of fasteners that are installed with a gap relative to it, and the binding plate is placed on the centering ledges with a gap relative to them, less the above-mentioned gap, and is rigidly connected to the support plate by the aforementioned fastening means. In the junction plate with holes, which are placed in the axial fingers with a gap, a smaller gap between the means of attachment and support plate, and a connecting plate made of the feet in contact with the support plate, and apertures for axial fingers are located on these pads.

The disadvantages of this design is that the connecting plate is mounted between the flywheel and the cover, which increases the axial dimension of the structure. The relative orientation of the clutch components in the Assembly process is provided by the legs with holes in them for the axial fingers that are not technological. Install the connecting plate relative to the cover in the axial fingers with a gap complicates the centering hub connecting plate.

The above disadvantages are eliminated in the coupling containing the supporting disk mounted on the flywheel, the clutch disc connected to the support plate by tangential plates, clutch disc with attached hub, installed between the pressure plate and flywheel, a diaphragm spring, is installed on the supporting disk with a preload against the pressure disc, a connecting plate attached to it hub, made with radiating petals and disposed between the diaphragm spring and the pressure disk, and a connecting plate ends its petals are connected to the support plate. While the petals of a connecting plate placed in the Windows, made in the supporting disk. Diaphragm spring can be installed on a raised from the inner side of the supporting disc bulges between the two rings. Petals connecting plate preferably made tapering to the ends. The binding plate is made preferably with three petals with holes on the ends. Thus, the center hole of one of the petals may lie on the axis of symmetry of the connecting plate, and the angle between the radial axes extending from the center of rotation of the binding plate and passing through the centers of the holes in the other two petals less than 90°. Recognize the Jena bridge plate to the support disk may be the means of attachment, installed in the holes of the connecting plate and the supporting disc mezzasoma, for example, tight-fitting bolts.

New in the claimed design is that the petals of a connecting plate placed in the Windows, made in the supporting disk. Diaphragm spring can be installed on a raised from the inner side of the supporting disc bulges between the two rings. Petals connecting plate preferably made tapering to the ends. The binding plate is made preferably with three petals with holes on the ends. Thus, the center hole of one of the petals may lie on the axis of symmetry of the connecting plate, and the angle between the radial axes extending from the center of rotation of the binding plate and passing through the centers of the holes in the other two petals less than 90°. Attached to the binding plate to the support disk may be by means of fasteners installed in the holes of the connecting plate and the supporting disc mezzasoma, for example, tight-fitting bolts.

Figure 1 shows the clutch in the section.

Figure 2 shows the connection of the pressure disc to the support plate.

Figure 3 shows the installation of a connecting plate in the supporting disk and mount using templet bolts.

Figure 4 shows the installation of a connecting plate in the supporting disk.

Proposed coupling the coupling is to be placed, containing the reference disk 1 (figure 1)fixed to the flywheel 2 by the engine by means of bolts 3 through the sleeve 4. Pressure plate 5 is connected to the support plate 1 and is mounted thereon by means of the coupling tangential plates 6 (figure 2) with the possibility of axial movement and joint rotation.

To the slave disk 7 (figure 1) attached to the hub 8 to connect the first shaft 9. The clutch disc 7 or clamped between the flywheel 2 and the pressure disk 5 to provide adhesion, or is released by turning off the clutch.

Diaphragm spring 10 is mounted on the supporting disk 1 interoperable with pressure disk 5 (Fig 3). Diaphragm spring 10 has the shape of a round plate, the peripheral portion of which forms the spring and in the Central part is made of radial slots with Windows 11 forming the petals 12 (figure 4). Diaphragm spring 10 is mounted between the support rings 13 and swallowed raised from the inner side of the supporting disc 1 projections 14 (figure 3) through the window 11.

Diaphragm spring 10 is installed on the supporting disk with a preload against the pressure disc 5 and communicates with the pressure disk 5 by cuddling its peripheral part to the centering projections 15 of the pressure disk 5.

To turn off the clutch there is a thrust bearing 16 (1), impacts the existing on the petals 12 diaphragm spring 10 in the axial direction by bending their left.

The clutch includes a second hub 17, which is designed to connect the output shaft 18, concentric with the shaft 9. The hub 17 is rigidly attached to a connecting plate 19 (Fig 1)connected to the support plate 1. The connecting plate 19 is located between the diaphragm spring 10 and the pressure disk 5 and is shown in figure 4 the example form of a round plate, preferably with three radiating petals, preferably tapering to the ends. The ends of the petals with holes for fastening to a supporting disk 1. The center hole of one petal 20 lies on the symmetry axis of the connecting plate 19, and the angle between the radial axes extending from the center of rotation of the connecting plate 19 and passing through the centers of the holes in the other two lobes 21 and 22, less than 90°. This allows you to place the petals of a connecting plate 19 in specially made boxes 23, 24 and 25 (figure 4) support the disk 1, the width of which is made larger than the width of the petals. This design of the connecting plate 19 is most convenient to install its petals in the Windows of the supporting disc. When assembling the first two lobes 21 and 22 are inserted into the Windows 23 and 24, and then the upper blade 19 is inserted in the window 25. In centering the protrusions 15 of the pressure disk 5 is made grooves 26 for the passage of the petals of a connecting plate 19. The connecting plate 19 is attached to about the priori disk 1 by means of fasteners (bolts, pins, bushings and the like)installed in the holes in the petals of a connecting plate 19 and the supporting disk 1, mezzasoma. In the figure 3 example, the binding plate 19 is attached to the supporting disc 1 tight-fitting bolts 27, which simultaneously provide accurate centering of the hub 17.

The connecting plate 19 may be made of plate shape and number of blades than three, if the conditions of its placement in the clutch allow it.

The mounting of the diaphragm spring 10, the pressure disk 5 and a connecting plate 19 on the supporting disk 1 as separate units, greatly facilitates the Assembly and simplifies the mounting of the supporting disc 1 to the flywheel 2.

Operates the clutch as follows.

In the initial state, the clutch is constantly enabled.

For clutch thrust bearing 16 affect the petals 12 diaphragm spring 10 in the axial direction, by bending them to the left (figure 1). When this diaphragm spring 10 peripheral part stops the effect on the pressure plate 5, which under the action of tangential plates 6 departs from the slave disk 7. While the slave disk 7 ceases to transmit torque from the flywheel 2 to the motor shaft 9.

After the thrust bearing 16 terminates its impact on the petals 12 diaphragm spring 10, the latter is Yaya takes its original position and the peripheral part of the pressure on the pressure plate 5 and presses it to the slave disk 7, which in turn is pressed against the flywheel 2. In the result, the torque is transmitted from the flywheel 2 by the engine through the hub 8 of the slave disk 7 on the shaft 9.

The shaft 18 PTO constantly connected with a connecting plate 19 through the hub 17. I.e. torque during the rotation of the flywheel 2 engine continuously transmitted to the supporting disk 1, and from him through the means of fastening, for example templet bolts 27, the connecting plate 19, the hub 17 and forth on the shaft 18.

Sources of information

1. Patent of great Britain No. 1452217, CL F 16 D 47/02, publication date 13.10.76,, the website of the EPO: http://ep.espacenet.com/.

2. Patent USSR No. 1804577, CL F 16 D 13/71 published 23.03.93, Bulletin No. 11.

1. Clutch containing the supporting disk mounted on the flywheel, the clutch disc connected to the support plate by tangential plates, clutch disc with attached hub, installed between the pressure plate and flywheel, a diaphragm spring, is installed on the supporting disk with a preload against the pressure disc, a connecting plate attached to it a hub for connection PTO, made with radiating petals and disposed between the diaphragm spring and the pressure disk, and a connecting plate ends its petals are connected to the support plate, atricauda is the, that the petals of a connecting plate placed in the Windows, made in the supporting disk.

2. The clutch according to claim 1, characterized in that the diaphragm spring is installed on the stub with the inner side of the supporting disc bulges between the two rings.

3. The clutch according to claim 1, characterized in that the petals of a connecting plate preferably made tapering to the ends.

4. The clutch according to claim 1, characterized in that the connecting plate is preferably made with three petals, with holes at the ends.

5. The clutch according to claim 4, characterized in that the center hole of one of the petals of a connecting plate lies on its axis of symmetry, and the angle between the radial axes extending from the center of rotation of the binding plate and passing through the centers of the holes in the other two petals less than 90°.

6. The clutch according to claim 4, characterized in that the connecting plate is attached to the support disk by means of fasteners installed in the holes of the connecting plate and the supporting disc mezzasoma, for example, tight-fitting bolts.



 

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