SU1523779A1 - Brake-clutch - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in clutches-brakes of forging and pressing machines. The purpose of the invention is to increase the service life and improve the performance of the clutch-brake by providing braking of the flywheel and increasing maintainability. On the cylinder body 9 with pressure discs (D) 8 of the coupling and the friction disk 11 of the brake there are splines 32, on which an additional D 33 is installed with axial movement. Under the action of compressed air, the pressure D 8 of the D 33 moves before contact with the friction D 6 couplings and clamp them. The clutch is engaged and the brake is switched off. In this case, the cylinder 9 is not in contact with the friction D 6 and does not wear out. If necessary, the flywheel 7 rotating by inertia can be stopped by means of brake power cylinders 36 with rods 34 acting on the disk 33. 1 sludge.

Description

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(D) 8 clutches and friction disc 12 brakes are provided with slots 32, on which an additional D 33 is installed with the possibility of axial movement. Under the action of compressed air, the pressure D 8 s D 33 moves before contact with the friction clutches D 6 of the clutch and clamp them. Inclusion occurs

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clutches and brake deactivation. In this case, the cylinder 9 is not with; it is mated with friction D 6 and does not wear out. If necessary, the flywheel 7 rotating by inertia can be stopped by means of brake power cylinders 36 with rods 34 acting on the disk 33. 1 sludge.

The invention relates to mechanical engineering and can be used in clutches-brakes of press-forging machines.

The purpose of the invention is to increase the service life and improve performance by providing a brake - flywheel and improving maintainability.

The drawing shows the coupling-brake longitudinal section.

On the hub 1 there is a radial disk 2 with a rim 3, on the slots of which the support 4 and slave 5 disks are mounted, and between them there are friction disks 6 having on the outer surface splines entering the rear of the splines of the coupling half 7. The clutch pressure disk 8 is made em function of the cylinder body 9 mounted movably in the axial direction on the hub 1 and fixed from rotation by the splines of the rim 3. Rolling pin 10 fixes the pressure disk 8 (cylinder body 9) for the flange 11 in contact with the friction disk

12 brakes, which is connected with a ring 14 rigidly mounted on the frame 15 and with a brake disc 16, and a brake disc 16, which is connected to the piston 18 by threaded parts 17,

In the grooves 19 of the brake disc 16, there are cups 20 installed with brake springs 21. The cups 20 and brake springs 21 are connected by threaded parts 22 and 23. with the flange 11 of the cylinder housing 9. The drums 20 are installed in the recesses 19 so that between the ends of the cups 20 and the planes in the undercuts of the support disk 16 there is a gap a smaller than the gap b between the cylinder 9 and the piston 18, which with its outer end made with a shoulder 14 in the form of a ring, abuts against nut 25 and covers the outer surface

nuts 25. The piston 18 is connected to the nut 25 by threaded parts 26 and has channels 27 and 28 connecting the cavity 29 between the cylinder body 9 and the piston 18. In the case of the nut 25 there are threaded parts 30 that are in contact with the end of the hub 1 so that they can move nuts 25 with respect to the hub 1 for the amount of clearance in the thread, and threaded parts 31 are in contact with the end of the piston 18 with the possibility of moving it relative to the nut 25.

On the slots 32 of the cylinder body 9, an additional disk 33 is installed. It can be axially moved and in contact with the end face of the disk 8 of the cylinder body 9 and the friction disks 6, or under the action of the rods 34 with the springs 35 of the brake force cylinders 36 also with the friction disk 6. Clutch-brake mounted on the drive shaft 37 and has a seal 38 and a gasket 39.

Clutch-brake works as follows.

An energy carrier, such as compressed air, enters channels 27 and 28 into the cavity 29 through an air supply head (not shown). Under the action of compressed air, the pressure disk 8 with an additional EZM disk 33 mounted on the slots 32 of the casing of the cylinder 9 moves to contact with its friction discs 6, resulting in clamping of the Friction 6, the slave 5 discs and the disk 33 between the cylinder body 9 and the supporting disc f 4 couplings and the flange 11 from the friction 12 and the supporting 16 brake discs. The clutch is switched on and off,. the cylinder body 9 is not in contact with the friction linings and, therefore, does not wear out, but the disk 33 wears out

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configurations. After the air is released from the cavity 29, the cylinder body 9 with the flange 11 under the action of the brake springs -21 returns to the side of the supporting disk 16 of the brake, clamping the friction disk 12 and the brake drive shaft 37.

If it is necessary to stop the coupling half 7 (flywheel), rotating by inertia, air is supplied to the piston cavity of the power cylinders 36, the rods 34 of which act on the end face of the disk 33.

The disk 33, moving along the slots 32 of the cylinder body 9 in the axial direction until it comes into contact with the friction disks 6, which take the action with the driven disks 5 and the supporting disk A, gradually slows down the rotation of the half-coupling 7. After the half-coupling 7 stops, the air from the force piston cavity the cylinders 36 are discharged into the atmosphere; the rods 34 under the action of the springs 35 come out of contact with the disk 33, stopping the braking of the coupling half 7.

During the operation of the clutch-brake, the friction discs 6 and 12 and the disk 33 wear out, which leads to an increase in the stroke of the pressure disk 8 (cylinder body 9) both towards the clutch and towards the brake. By virtue of increasing the stroke of the cylinder body 9, the cups 20, compressing the brakes D1-ribs 21, are mixed by an amount of gap ai, thereby automatically turning on the clutch, and turning on the brake remains secured, since the gap b is larger than the gap a, which is reliable and reliable

There is an exception to moving the machine when the clutch-brake works.

During operation of the mosaic torch coupling, the nut 25 may be loosened on the hub 1 thread, as a result of which a play appears in the threaded joint, which leads to a thread retraction and ultimately to emergency situations. To eliminate the occurrence of a backlash, threaded parts 30 are screwed into the threads. Screwing them in the body of the nut 25 against the stop into the hub 1 select the backlash in the threaded connection.

The clearance a is adjusted with the threaded parts 22 and 23, and the gap b with the spacers 39.

Claims (1)

Invention Formula A clutch-brake containing a hub, an axially mounted cylinder, a piston and a nut with channels for the piston (Energy supply, as well as rigidly connected to the cylinder and the piston, respectively, the pressure and supporting discs of the brake, between which the friction disk of the brake is located, and The support and friction clutch discs mounted on the Hub are designed so that, in order to increase service life and improve performance, it is provided with the wife brake cylinder with rods, an additional disk mounted on the slots on the cylinder with the possibility of axial movement and interaction with friction and pressure disks of the clutch, as well as with brake rods of power cylinders.