SU1320554A1 - Two-disc clutch - Google Patents

Abstract

The invention relates to mechanical engineering, in particular to devices for transmitting rotation. The aim of the invention is to increase reliability by reducing moving parts, increasing the stability of the characteristics of elastic elements by improving their thermal insulation from heat flow in the friction zone, and also by eliminating the effects of centrifugal forces and compensating for friction forces associated with moving the middle disk . The middle disk (SD) 2 is located between the supporting disk (D) 1 and the pressure D 3. In the grooves 13 SD 2, fingers 14 are fixed, for example, from plastic. The torsion springs (PC) 15 and 16 are mounted on them, the ends of which interact with the fixed stops 21 of the supporting 1 and pressure D 3. When the clutch of the PC 15 and 16 is disengaged, set the LED 2 at the same distance from D 1 and 3 to form between them and driven by clearances. Installing the PCs 15 and 16 in the recess 17 of the LED 2 on the fingers 14 and placing their ends in the radial grooves of the lugs 21 and 24 allows stabilizing their characteristics and improving the cleanliness of disengagement of the clutch in operation. 3 ZP, f-ly, 7 ill. (O ate,; with GcheE O O JV 4 Figure 2

Description

The invention relates to mechanical engineering, in particular to devices for transmitting rotation.

The aim of the invention is to increase reliability by reducing moving parts, increasing the stability of the characteristics of elastic elements by improving their thermal insulation from the heat flux in the friction zone, and also by eliminating the effects of centrifugal forces and ensuring the compensation of friction forces

with medium disk shuffle.

FIG. 1 shows a double-plate clutch, longitudinal section; in fig. 2 is a view A of FIG. one; in fig. 3 - installation

A similar stop 26 can be located on the pressure disk 3. The contact point of the end 23 of the torsion spring 16 with the stop 25 and the point of contact of the end 18 of the spring 15 with the support 26 are outside the outer side surface of the support disk 1. At the same time, the distance from the specified point of contact of the end 23 into the abutment 25 to the center of the finger 14 is less than the distance “in” to the point of contact of the end 18 of another spring with

10 focus 26.

The finger 14, on which the torsion springs 15 and 16 are located, can be made hollow or from a material having a low coefficient of heat conductor in the middle clutch disc; in fig. 4-STI, for example from plastic (fig. 5) spring stop; in fig. 5 - option you-clutch works as follows

spring stops; in fig. 6 — spring stop according to FIG. five; in fig. 7 is a section BB in FIG. five.

The two-disk clutch contains the supporting disk 1, the middle disk 2 and the pressure disk 20, the supporting disk 1, the middle 2 and the pressing 3, between which there are slave 3 disks. Due to this coupling can

In the position shown in FIG. 1, the diaphragm spring 9, acting with an axial force on the annular protrusion 8, compresses the driven friction discs 4 and 5 between

friction discs 4 and 5.

On the supporting disk 1 is fixed the casing 6 with the help of bolts 7 (Fig. 2). Between the casing 6 and the annular protrusion 8 of the pressure disk 3 a diaphragm spring 9 is preliminarily compressed, which ensures the moment of friction between the supporting disk 1 and the driven disks 4 and 5. On the diaphragm spring 9 there is an engaging device 10. The middle disk 2 has protrusions 11 and 12, forming a groove 13. In the protrusions 11 and 12 there are tangentially located holes in which the pin 14 is inserted. Two similar springs 15 and 16 are loosely worn on the finger 14.

In the assembled clutch, the protrusions 11 and 12 are located in the recess 17 of the support disc 1, as a result of which the possibility of finger 14 being prevented.

One end 18 of the torsion spring 15 rests on the middle disk 2, and the other end 19 of this spring is located in the radial groove 20 of the anvil 21 fixedly mounted on the pressure disk 3.

Similarly, one end 22 of the torsion spring 16 rests on the middle disk 2 and the other end 23 rests on the support 24 mounted on the support disk 1. At the expense of the grooves 20 made in the stops 21 and 24, axial fixation of the torsion springs 15 and 16 along the fingers 14, preventing them

25

thirty

35

40

45

transfer from the reference 1 to the slave disks 4 and 5 a certain calculated value of the torque, i.e. clutch included. When the switching device 10 is moved to the right, the diaphragm spring 9 bends and ceases to act on the annular protrusion 8.

The pressure disk 3 following the deflection of the diaphragm spring 9 is also moved to the right by means of devices or springs that are well known (not shown).

Under the action of the pre-deformed torsion springs 15 and 16, the disk 2 also moves to the right and occupies a middle position between the support 1 and the pressure 3 disks, i.e. divides the gap formed by pushing the pressure plate 3 to the right in half. Due to this, each of the slave disks 4 and 5 is located with a gap, respectively, relative to the adjacent disks 1, 2 and 2, 3.

In the position described, the clutch does not transmit torque from the supporting disk 1 to the driven disks 4 and 5, i.e. it is in the off state.

The detachable coupling device consists of three sizes of parts of simple design (pin 14, torsion spring 15 and stop 21). In the clutch, the torsion springs 15 and 16 are protected from heating by large heat fluxes coming out of the middle disk 2, since they do not have only contact with the heated parts of the middle disk of the contact surface. Therefore, the temperature mode of operation of the torsion springs 15 and 16 is relatively low. This prevents the thermal settling of the springs 15 and 16, which guarantees the preservation of their characteristics in operation, and, consequently, the operation 2.

The clutch shown in FIG. 5, includes lugs lugs 25 and 26, the shank 27 of which is inserted into the aperture 28 of the support disk and the pressure disk 3. The free end of the abutment 25 has 55 adhesion radially 55.

located cheek 29, which is inserted into the additional groove 30 of the backplate 1 and prevents the stop 25 from rolling.

Assembling the middle disk 2, i.e. Mounting torsion springs 15 and 16 and finger 14 on it is a fairly simple operation.

A similar stop 26 can be located on the pressure plate 3. The contact point of the end 23 of the torsion spring 16 with the stop 25 and the point of contact of the end 18 of the spring 15 with the stop 26 are outside the outer side surface of the support disc 1. The distance along the coupling axis from the specified point of contact of the end 23 into the abutment 25 to the center of the finger 14 is less than the distance “to the point of contact of the end 18 of another spring with

focus 26.

The finger 14, on which the torsion springs 15 and 16 are located, can be made hollow or from a material having a low thermal conductivity coefficient, for example, from plastic (Fig. 5). The adhesion works as follows,

basic disk 1, average 2 and pressure 3 disks. Due to this coupling can

In the position shown in FIG. 1, the diaphragm spring 9, acting with an axial force on the annular protrusion 8, compresses the driven friction discs 4 and 5 between

five

0

five

0

five

transfer from the reference 1 to the slave disks 4 and 5 a certain calculated value of the torque, i.e. clutch included. When the switching device 10 is moved to the right, the diaphragm spring 9 bends and ceases to act on the annular protrusion 8.

The pressure disk 3 following the deflection of the diaphragm spring 9 is also moved to the right by means of devices or springs that are well known (not shown).

Under the action of the pre-deformed torsion springs 15 and 16, the disk 2 also moves to the right and occupies a middle position between the support 1 and the pressure 3 disks, i.e. divides the gap formed by pushing the pressure plate 3 to the right in half. Due to this, each of the slave disks 4 and 5 is located with a gap, respectively, relative to the adjacent disks 1, 2 and 2, 3.

In the position described, the clutch does not transmit torque from the supporting disk 1 to the driven disks 4 and 5, i.e. it is in the off state.

The detachable coupling device consists of three sizes of parts of simple design (pin 14, torsion spring 15 and stop 21). In the clutch, the torsion springs 15 and 16 are protected from heating by large heat fluxes coming out of the middle disk 2, since they do not have any traction capacity with it.

Assembling the middle disk 2, i.e. Mounting torsion springs 15 and 16 and finger 14 on it is a fairly simple operation.

After mounting the disk 2 on the supporting disk 1, the side walls of the recess 17 prevent the fingers 14 from jumping out, as a result of which no special monitoring devices are required.

Claims (4)

Claim 1. Double-disc clutch comprising a pressure disk with a stop, a support disk with a fixed stop, a middle disk, between them driven disks and elastic elements associated with the supporting, pressure and middle disks, in order to increase reliability , it is equipped with fingers, tangentially installed in grooves made along the periphery of the middle disk, elastic elements made in the form of torsion springs mounted on fingers in pairs, the stops of the pressure and support disks are made with radial grooves mi, one ends of the springs The masses of torsion springs 15 and 16 are insignificant, which significantly reduces the frictional forces and, therefore, increases the clarity of the disc 2 between the disks 1 and 3, when the clutch is engaged. The clutch operation of FIG. 5 is similar to the engagement of FIG. 1. Moving the middle disk 2 to the right when disengaging the clutch is associated with overcoming a certain friction force arising at the top 15, are located in the radial grooves, and the other stupas 11 and 12 along the recess 17. are installed with an emphasis on the middle disk, This emphasis of the pressure plate is fixed. 2. Coupling according to claim 1, characterized by the fact that the stops are L-shaped with the spring 15. When disengaging the clutch 20, they step over the outer side surface — the variant of FIG. 5 provides a more even-ness with free ends, positioning the disc 2 between the disc 1 and the other in additional made on pressure plate 3. Carrying out the point of the pressure and supporting disks from the side cycle ends 23 and 18 for the outer diameter of the middle disk grooves, and the radial grooves the support disk 1 improves cooling 25 located at the free ends of the stops, springs 15 and 16 and allows reduction 3. Coupling on the PP. 1 and 2, different In that, the distance along the axis of the torsion spring to the support disc is less than the distance from it to the point of the torsion spring stop in the pressure plate. thirty 4. Coupling on PP. 1-3, characterized in that the fingers are made of plastic. Performing the distance “a less” in provides for a greater pre-deformation on the spring 16 than on the outer diameter of the support disc and thereby reduce the metal intensity of adhesion. Making the punching pin 14 or from a material with low thermal conductivity further reduces the temperature conditions of the operation of torsion springs 15 and 16. 17/5, No. 7 "/ Eg75 Claim 1. Double-disc clutch comprising a pressure disk with a stop, a support disk with a fixed stop, a middle disk, between them driven disks and elastic elements associated with the supporting, pressure and middle disks, in order to increase reliability , it is equipped with fingers, tangentially installed in grooves made along the periphery of the middle disk, elastic elements made in the form of torsion springs mounted on fingers in pairs, the stops of the pressure and support disks are made with radial grooves mi, one ends of the springs located in the radial grooves, while others are installed with emphasis in the middle disk, with fae. 3 , 20 18 Thebes, ff Rig. five 25 28 25 27 Bb Phie. 7