SU1293389A1 - Friction clutch - Google Patents

Abstract

The invention relates to a machine building, namely to torque transmission devices. The purpose of the inventions is to increase service life and reliability by reducing wear of friction surfaces, reducing and stabilizing coupling imbalance (M), reducing noise and damping vibrations by using a device to ensure clean shutdown M for both centering and damping vibrations of driving disks (D ). For this, the friction M contains a device 7 for ensuring clean shutdown M consisting of uniformly circumferentially fixed and fixed on the flange 15 of the supporting D2 leaf springs 16 with elastic legs (UL) 17. The UL 17 are located opposite the rim 18 of the pressure D 3 and enter In the grooves 19 on the periphery of the D 3, each UL 17 with its curved end 23 abuts against the bottom 21 and the side wall 20 of the groove 19 smoothly mating with it. The lamellar springs 16 can have two UL 17 in the case of an additional intermediate lead D. the driving moment from the flywheel 1 to D 3 and the intermediate D is provided with elastic tangential plates 13. When M is turned on, the pressure D 3 is released, and the UL 17 removes the driving D from the followers D 4, forming a gap necessary to turn off M. Besides, UL 17 provide centering and damping of the vibrations of the leading D, 4 e.p., f-ly, 12 ill. i (L yu from S from 00 to

Description

11293389

The invention relates to a machine steering wheel for 3 times from 17 to 17 pack. on me

structure, namely, to the transmission of torque, and can be used mainly in the tractor and automotive industry.

The purpose of the invention is to increase service life and reliability by reducing wear of friction surfaces, reducing and stabilizing coupling imbalance, reducing noise and damping vibrations by using a device to ensure clean shutdown of the coupling both for centering and damping vibrations of drive disks.

FIG. 1 shows the same friction clutch with a cup-shaped pressure spring, a general view in FIG. 2 is a section A-A in FIG. 1; Figs 3-10 show various variants of the friction clutch in two- and three-disk versions with disc and twisted cylindrical pressure springs; FIG. 11 is a view B in FIG. 4, 5 and 7; FIG. 12 is view B of FIGS. 8 and 9;

The friction clutch (Figs. 1 and 2) contains a flywheel 1, a support 2, a pressure 3 and a slave 4 disks, a pressure device 5, a device 6 for connecting the pressure (driving) disk 3 with the flywheel 1, a device 7 for ensuring clean shutdown of the clutch, used simultaneously for centering and damping vibrations of the pressure plate 3,

The pressure device 5, mounted on the supporting disk 2, contains a cup spring 8, sandwiched between two wire rings 9 and 10 through a crown 11 with rivets (spacers) 12,.

The device 6 for connecting the pressure disc 3 to the flywheel 1 contains elastic tangential plates 13 connected by one ends to the flywheel 1 via stepped fingers 14 mounted in the flywheel 1 and rigidly fixed in the support disk 2, and the other ends to the pressure disk 3.

A device 7 for ensuring clean shutdown of the clutch, simultaneously used for centering, reducing noise and damping vibrations of the pressure plate 3, contains at least three circumferentially uniform and rigidly mounted on the flange 15 of the support

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The disk 2 of the leaf springs 16 with elastic legs 17, The latter are located against the rim 18 of the pressure disk 3 and fit into the grooves 19, made on the periphery of the pressure disk 3 11 of the plane perpendicular to the axis of rotation of the coupling. The wall 20 of each groove 19 of the pressure disk 3 most distant from the flywheel 1 smoothly passes into the bottom 21 and forms an obtuse angle 22 with it, and each elastic foot 17 with its curvilinear end 23 is elastically installed in the corresponding groove 19 so that rests simultaneously in the bottom 21 the sidewall 20 of slot 19 smoothly matching with it;

Plate springs 16 can be installed and rigidly mounted on the flywheel 1,

In the design variants (Figs. 3-10), two or three-disk friction couplings with disc and twisted cylindrical pressure springs are shown.

Option 1 (FIG. 3) is a double-disk friction clutch with a disk-type compression spring. In contrast to the described coupling (FIGS. 1 and 2), it additionally contains an intermediate disc 24, and the leaf springs 16 each have two elastic legs 17 formed by limb its ends located along the longitudinal axis of the plate springs 16, parallel to the axis of the coupling,

Option 2 (FIG. 4) is a double-disk friction clutch with a cup-shaped spring 8. In it, as in the previous one (fig 3), the plate spring 16 also has two elastic legs 17, but one of these legs is formed by punching tab 25 of the body of the leaf spring 16,

Version 3 (FIG. 5) is a three-disk friction clutch with a disc spring 8. In contrast to the friction clutch of version 1 (FIG. 3), there are two intermediate drive discs 24, and each plate spring 16 has a third elastic tab 17 formed by cutting the tongue 25 (FIG. 11) from the body 26 of the leaf spring 16 and located in the gap. between the two extremes.

Option 4 (FIG. 6) - double-disk friction clutch with twisted cylindrical pressure springs

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27, in contrast to the friction clutch according to version 1 (FIG. 3), instead of a cup spring 8 and parts for its installation and fastening, there are twisted cylindrical springs 27, each of which is installed at one end 28 on the boss 28 of the pressure plate 3 and on the mounting plate 29 of the support disk 2, and on the rim 18 of the pressure disk 3 there are no grooves 19 and the elastic tab of each leaf spring 16 located against the rim 18 of the pressure disk 3 rests on the outer surface of the rim 18 of the pressure disk 3 ..

Option 5 (Fig. 7) is a double-disk friction clutch with twisted cylindrical pressure springs 27. In general, this clutch is similar to the friction clutch for option 4 (Fig. 6), and for the formation of elastic legs 17 lamellar springs 16 - according to option 2 (Fig . four).

Option 6 (Fig. 8) is a double-disk friction clutch with a cup-type pressure spring 8. Its design is similar to the design of a friction clutch for option 1 (Fig. 3). A distinctive feature is.

that two elastic legs 17 of each leaf spring 16 are arranged along an arc of a circumference of the sleeve and are formed by separating them with the slots 30 (Fig. 12).

Version 7 (Fig. 9) is a three-disk friction clutch with a cup-shaped pressure spring 8. Its design is similar to that of version 3 (Fig. 5) and differs from it in that the three elastic legs 17 of each leaf spring 16 are positioned as in embodiment 6 (Fig. 8), along the arc of the circumference of the coupling and are formed by separating them with the slots 30 (Fig. 12).

Option 8 (Fig. 10) is a double-disk friction clutch with twisted cylindrical pressure springs 27. Its design is similar to the design of the friction clutch according to the variant (Fig. 6) and differs from it in that two elastic legs 17 of each leaf spring 16 are positioned The arc of the coupling circumference is formed by separating them with the slots 30.

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In addition, friction clutches with both disc and twisted cylindrical springs can be made multi-disc and lamellar springs 16 are made similarly to those considered, and the number of elastic legs 17 of each spring corresponds to the number of drive disks 3 and 24 of the clutch. In all the cases considered, the leaf springs 16 are integral, and their elastic legs 17 are formed from the body of the springs themselves.

In order to create sufficient force to ensure the removal of the leading pressure 3 and intermediate 24 discs, the cleanliness of turning off, centering and damping vibrations, the leaf springs 16 can be made as a set of plates (package) both in the case and in their parts. The leaf springs 16 can also be made adjustable, i.e. can vary the distance from the point of their attachment to the axis of the coupling.

The clutch works as follows.

When the friction clutch is turned on, the pressure springs (a tarmac 8 or twisted cylindrical 27) are supported on the supporting disk 2, affecting the annular protrusion 31 or the pressure disk 3 boss 28, respectively, and pressing (depending on the number of driving disks in the coupling) 3 , the slave (slave) 4 and intermediate 24 discs to the flywheel 1, thereby ensuring the transfer of torque from the engine. Torque transfer from the flywheel 1 to the pressure 3 and intermediate 24 discs is provided by elastic tangential plates 13 connected by one ends to the flywheel 1 through the stepped fingers 14 mounted in the flywheel 1 and firmly fixed on the supporting disc 2, and the other ends to leading pressure 3 and intermediate 24 discs.

A release bearing assembly, 32 (figure 2), is used to turn off the clutch. In a friction clutch with a cup-type pressure spring 8, the release bearing 32 with its abutment acts on the inner ends of the petals 33 (Fig. 1);

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the gap, and the elastic legs 17 of the leaf springs 16, entering the grooves 19 of the leading pressure 3 and intermediate 24 discs and resiliently resting with their curvilinear ends 23 simultaneously at the bottom 21 and smoothly matching with it the side wall 20 of the corresponding groove 19, retracts the leading The disks form the gaps between the pressure 3, the slave (slaves) 4, the leading intermediate 24 disks and the flywheel 1, which are necessary for switching off the friction clutch. In addition to ensuring clean clutch shutoff, the elastic legs 17 of the leaf springs 16 simultaneously provide centering and damping of the vibrations of the drive disks. In a clutch with twisted cylindrical pressure springs, the release bearing 32 acts upon pressure levers (not shown) connected to the clamping disk 3, the pressure disk 3 is released, forming a gap, and the elastic legs 17 of the plate springs 16 entering the grooves 19 of the intermediate (intermediate) disk 24 and resiliently supported by their curvilinear ends 23 simultaneously in the bottom 21 and the side wall 20 of the corresponding groove 19 smoothly matching with it, the intermediate disks 24 are retracted, forming gaps between the pressure 3, the slave (slaves I4, 24 discs and a flywheel needed to turn off the friction clutch. And in this clutch, the elastic legs 17 of the leaf springs 16 simultaneously ensure the cleanliness of the clutch release, centering, and damping the vibrations of the drive disks.

Claims (2)

1. A friction clutch containing a flywheel, a supporting disc, a pressure mechanism mounted on the supporting disc, driven friction discs, driving pressure and intermediate discs, as well as elements to ensure clean clutch shutdown, finished in the form of flat springs with elastic legs characterized in that, in order to increase service life and reliability by ensuring centering and damping the vibrations of the driving diodes, the flat springs are fixed on the backing disk, and their elastic legs are fitted with the possibility of mode with drive disks in the radial direction to the axis of rotation of the coupling, 2. A clutch according to claim 1, characterized in that, in order to improve the shutdown cleanliness, grooves are made on the intermediate lead disk on the side of the side surface, the walls of which are located on the side of the pressure disk are placed at an obtuse angle to the bottom of the grooves, and elastic legs installed in the grooves with elastic contact with the specified walls and the bottom of the grooves. 3, Coupling on PP. 1 and 2, that is, that the tabs opposite the pressure disk are installed with elastic contact with its side surface. . Clutch Popp. 1 and 2, characterized in that said grooves are made on the pressure disk, and elastic legs, installed with the possibility of elastic interaction with pressure disk, placed in the aforementioned grooves with their elastic contact with the said walls and the bottom of the grooves. 5, Coupling on PP. 1-4, that is, with the fact that the flat springs of the drive disks are integral. do 7 but IS P "/ FIG. 2 2122 202122205 Ll. 7 " gt 222q 5g (/ / .5 FIG. B  21 2220 5 iv.7 f Wffff fie.8 Fie.9 Z12k Tl 18 G9 IS FIG. YU Buds -23 FIG. 12