DE2001359A1 - Device in rotating machine or motor units - Google Patents

Description

The invention relates to a device in rotatable Maschinenr Or motor units, for example in V-belt drives, shaft couplings or the like, with at least one first, in the direction of Rotary shaft on a second, essentially immovable in this direction Body to and away from this body movable, which with the second body via one or more, by centrifugal forces operable members is in connection, which adjust the axial distance between the bodies depending on the size serve the centrifugal force.

The invention is based on the object of creating a device by means of which the relative movement between the bodies takes place automatically as a function of the rotational speed of the bodies.

The invention is explained below with the aid of two exemplary embodiments shown in the drawings, on the one hand in connection with a V-belt drive which, with an automatic change in the transmission ratio as a function of the rotational speed

009830/1316

Dipl -Ing. Heinz tessar, P_u! Κλ.ι'ι D - 8 Munich 31, Cosimostrafe «81 · Telephone: (0811) 48 38 20

number works, and on the other hand in connection with a shaft coupling. It shows:

j Fig. 1 is a section through the device according to the Invention

■ in combination with a V-belt drive,

; Fig. 2 is a section along the line H-H of Fig. 1,

3 shows a section through the device according to the invention

in combination with a shaft coupling, Fig. 4 is a section along the line IV-IV of Fig. 3,

j Fig. 5 is a section along the line V-V of Fig. 3,

6 shows an alternative embodiment of part of FIG

Device according to the invention, FIGS. 7 to 9 partly in section and partly in plan view!

alternative devices in combination with ^; V-belt drives.

According to the invention, the V-belt drives shown in Figs. 1 and 2 have a first body 1, which is connected to a second body 2 by one or more, actuated by centrifugal members 3, which regulate the • axial distance between the bodies proportional to the grolle the

Serve centrifugal force. In this arrangement, the first body is 1 connected to part of a body 4 or optionally forms • itself part of the same or is otherwise suitable for driving this body 4, be it an engagement, a locking · -, Drive · -, regulation · - or bodies acting in an analogous manner.

These bodies 1, 2 and 4 are arranged around a shaft 5 , which in this case is a drive shaft. The first body 1 consists of a hub, for example. on a hub-shaped part, the axially aar shaft

009830/1315

Dipl.-Irg. Heini Lesser. ϊ ~ α ·? · ι ·: jiswcit D - 8 Munich 81. Cosimastrafce 81 · Telephone: (0611) 48 38 20

r 3 -

5 is slidable. The second body 2 consists of a ring or an annular part which is axially fixed to the shaft 5, while the actuating body 4, similar to the first body 1, is axially displaceable to the shaft 5. As can be clearly seen from Fig. 1, the actuating body 4 forms one half of a V-belt pulley, which is designated as a whole with 6 and the other half 8 on the other. Side of the V-belt 7 runs axially symmetrically. The first body and the actuating body 4 are arranged on both sides of the second body or ring Z , which is rigidly fixed with respect to the curve 5, with the result that when the first body 1 approaches the second body 2 is, the actuating body 4 is withdrawn from the second body 2, and vice versa. For this purpose, the first body 1 is connected to the actuating body 4 via two pins 9 and 10, which are pushed through through openings or slots 11 and 12 provided in the ring 2 ah-shaped receiving etchings 13 and 14. The lugs 13 and 14 can preferably be fixed on the pulley half 4 by means of locking pins or locking screws 15 and 16, for example.

A sleeve 17 is arranged on the shaft 5 and has a single nut in the middle 18 is set, which on the threaded end the shaft is screwed, as in Fig. 1 on the right side, is shown. On the sleeve 17 are on their tttnfiang Axialj grooves provided along with the complementary approaches

on bodies 1, 2 and 4 a wedge-shaped connection; form ^ which prevents the body from lying in a radial direction to the ^ Ktilse fezw, to * WeMe. To prevent! that (the ring 2 tufewregt in the axial direction, - Anechlagrmge are vorgeeeiien 20 and 2t on both sides of rings * I> he örünä, wäriiijs Me bet ^'; |.

the

00-fti.av 131 p

Dipl. Ing. Heinz tev> er. Pcier * τπ ^ π'ί ϋ - 8 Mu ^:! icfiea SI, Cosimastrafce 81 Telephone: (0811) 48 38 20

is set, is to be sought in that thereby the entire device can be easily removed from the shaft 5.

The aforementioned centrifugally actuated members 3 are made in the present case of chains, which with their one ends on the receiving lugs 13 and 14 of the ring 2 and with their other Ends on a pair of corresponding receiving lugs 22 and 23 of the hub 1 are fixed. The chains are in the arrangement shown Od with two holders Pen is stored. It can be clearly seen that a deformation of the chains 3 under the effect of centrifugal force causes the bodies 1 and 2 to move against one another approximates. To ensure that the chains are practically straight in their starting position, i.e. when the device is out of position Is in operation or in the rest position, a spring means in the form of a spiral compression spring 24 is provided between the first and the second body. This spring keeps the body 1 and 2 always separated from each other.

In order to protect the device from external influences, a protective covering 25 is provided on the hub 1, which is connected to the cylindrical outer circumference 27 of the pulley half 4 via an accordion-like connecting wall 26.

The apparatus shown in FIGS. 1 and 2 and described above operates as follows. At rest, the bodies 1 and 2 are maximally separated from each other by the action of the spring 24, the distance being determined by the length of the chains. The Siemens pulley half 4 abuts the stationary ring 2, so old that the two halves 4 and 8 of the V-belt pulley 6 are maximally distant from one another. This position has the effect that the V-belt 7 has its low-

009130/1316

Dipl.-Ing. Heinz U «t- < Pole .--, n «a? D - 8 Munich 81, Cosimasttafee 81 · Telephone: (0811) 48 3820

most effective diameter, whereby a maximum force of the Drive shaft 5 can be transmitted to the driven shaft, not shown.

If the shaft 5 is set in rotation, the chains 3 bend due to the steadily increasing centrifugal force through to the outside. This creates an axially directed tensile force in the chains, which pulls the first body 1 towards the second body 2. At the moment At the start, the tensile force generated in this way is very large, regardless of the mass of the chains 3. Theoretical at this stage is the pulling force infinitely large. If the speed increases, the body approaches 1 to the body 2, while at the same time the actuating body 4 moves away from the body 2, which means a “steady increase in the effective Diameter of the V-belt 7 results. This creates a

automatic reduction of the gear ratio depending on!

the speed between the drive shaft and the driven part of the V-belt drive β achieved.

Although the tensile force caused by the chains 3 is initially very large it decreases as bodies 1 and 2 approach each other. This is due to the fact that the radial force component in the chains increases, while at the same time the axial force component te gets smaller.

The embodiment of the device according to the invention shown in FIGS. 3 to 5 in combination with a shaft coupling is explained below. As can be seen from FIG. 3, the shaft coupling consists of a drive shaft 33 and a driven shaft 34. Au: the drive shaft 33 is provided with a first body 36 in the form of a hub via a keyway connection 35. This hub is via the links or chains 37 operable by centrifugal force with a

000130/1311

Dipl. Ing. Hei'ru Lessar, P-jttn.On · .- ^ t D ~ 8 MüncM * n Si, Cojimastrafe · 81 ■ Telephone: (0811) 48 38 2)

second, annular body 38, which is fixed to the shaft, for example by means of a wedge 39. Between the A spring means in the form of a spiral compression spring 40 is arranged in the first and second bodies. The first body 36 stands over one , Pin or a rod 41 with an actuating body 42 in connection, which in the present embodiment in the form of a ; Clutch plate is formed. The pin 41, as in the previous : The described embodiment is inserted through a passage opening 43 in the second body, is by means of see approximate pins or ■ Locking screws 44 and 45 fixed. The clutch plate 42 is : provided with an elastic ring in the form of a V-belt 46, ; which is held in position by a flange 47 formed on the circumference of the coupling plate. At the central opening of the Clutch plate 42 is through a keyway connection 48 between the Coupling plate and the stationary ring 38 a torsionally rigid connection created.

The elements described above together form the drive part the shaft coupling, which is covered by the protective casing 49.

The driven part of the shaft coupling consists, in addition to the driven shaft 34, of a connection plate 50 on which a sleeve 51 is fixed , which surrounds the free end of the drive shaft 33. A keyway connection or the like 52 is provided on the sleeve 51, which connects the sleeve to the cylindrical part 53 of the second coupling plate 54 during the drive. The second coupling plate 54 comprises a seat ring 55 which is adjustable with respect to the distance from the first coupling plate 42 by means of a screw or the like 56. On the coupling plate 54, one or more clamping jaws 57 are also provided, which under the action of centrifugal force

009130/1311

Dipl.-Ing. Heinz l.es <->?. <, "Pute'v'ciiwuU. D - 8 Munich 81, Cosimqsliajje 81 ■ phone: (0611) 48 38 20

strike against the inside of the V-belt 46. Between the driven sleeve 51 and the first clutch plate 42 is a

: Spiral spring 58 arranged, which acts parallel to the spiral spring 40. on

! the inside of the sleeve 51 are two bearings 59 and 60 for storage

: the drive shaft 33 is provided. In addition, an override coupling 61 can be installed on the inside of the sleeve. b'eiepiels- ' wise be provided for an engine brake.

- The device described with reference to FIGS. 3 to 5 is now working . as follows.

In the starting position, i.e. at rest, the individual components assume the position indicated in FIG. If the shaft is 33 in Rotation offset, the chains 37 are, as described above, moved by the centrifugal force, whereby the first body 36 over the pin 41 the first clutch disc 42 in the direction of the. second Clutch disc 54 moves. Will be a certain speed of rotation reached, the clutch disks are above the, elastic V-belt 46 and the seat ring 55 smoothly and flexibly into one another Link. Come after another increase in speed the jaws 57 to act by being driven by centrifugal force pressed against the inside of the V-belt 46. Through this becomes an absolutely secure connection between the clutch discs created. The force coming from the drive shaft 33 wtrd through the splined connection 52, the sleeve 51 and the plate 50 are transmitted to the driven shaft 34.

In Figure 6 an alternative Aueführungeform let de · previously in the form of a chain is ge β shared, ones shown, operated by centrifugal force member. • divides. According to this alternative design there is a result

00983071316

D: pl.-lnq. Hfifii le «i?>

■; .- ') ·. ..n. »n ι D-S MiWim 31. Cosimastrafee 81 · Telephone: (Ö811) 48 38 20

Centrifugal force actuated member of two relative to each other ver pivotable Legs 62 and 63 which are connected in a common joint 64. In this arrangement, the free end is a leg articulated on the first body and the free end of the other leg articulated on the second body. A leg 62 is on the joint provided between the legs with a thickening 65, the articulated j

is connected to a fork-shaped part 66 of the other leg 63. The member designed in this way exerts a *

Tensile force between the bodies to which the limb is connected.

The pins 9 and 10 already described can have an adjustable length, so that where the part 22 according to FIG to calculate, it is rather possible to determine the point of application or the initial force. The very high initial force is very advantageous in most cases, for example because it can easily eliminate all effects of initial inertia and hysteresis. In certain cases, however, a large initial force may be less desirable. The adjustability of the length of the pins 9 and 10 allows the initial force to be arbitrarily determined and regulated. This adjustability can in a simple manner for example be achieved in that od on the pin via threaded sleeves. Like. Are placed, in respect can be adjusted to the pins, or in that the part is provided with threaded holes 22, which screw-pin be assigned, by means of which the distance between the pins 9 and 10 on the one hand and the part 22 on the other hand can be changed or is set .

009830/1315

Heim! Sw '■ v " _: ! -31 ^! Ό - 8 Mü.ir ^ n Si, Cosimastrafce 81 > Telephone: (0811) 48 38 20

- 9

In Fig. 7, an alternative embodiment of the invention is shown in Combination with a V-belt drive shown. Analogous to the device According to FIG. 1, the device according to FIG. 7 shows a first body 1 and a second body 2 which are arranged around a shaft 5 are. The two bodies 1 and 2 are at least one with each other Member 67 in connection, which responds to centrifugal forces and is designed according to FIG. To achieve a desired tensile force between the To be able to adjust bodies is a hole in the first body 1 for a pin 68 is provided, the connecting pin 9, directly opposite. The left end of the pin 68 is provided with a run-up flange 69 for a spring 70 arranged in a recess of the body 1. At the right end of the pin 68 is a screw element 71 is provided, by means of which the pin 68 can be adjusted in the axial direction in different positions. Through this adjusting spigot 68 it is possible to adjust the distance between the connecting pin 9 and the thrust flange 69 so that the initial force or brought the initial rotation to a certain desired value can be. .

In the device shown in FIG. 7, the protective covering 72 is conical, which saves a lot of space.

8 shows a further, alternative embodiment of the invention shown according to the device. In this device the first I. Body 1 is assigned an adjusting pin 73, which at its left end j has a sleeve-shaped holding part 74. In the holding part 74 is a compression coil spring 7 5 arranged between the connecting pin 76 and the adjusting pin «73 enables a perfect connection. As can be seen from Fig. 8, the spring 75 is located on one Anechlagring 77 arranged on the connecting pin 76, whose

009 8 30/1315

pi i.iq Htt-'ί i ,, '. ·. · ί' · ■:> / <{..- '!

D --8 Minden 81, Cosimastrci & e 81 Telephone: (0811) 48 38 20

- 10 -

Outside diameter is smaller than the inside diameter of the holding sleeve 74. The device shown in Fig. 8 is apart from the fact that it allows adjustment of the initial tensile force between the first and second body 1 and 2 offers, in particular advantageous because an elastic connection between these bodies is created.

In Fig. 9, finally, an embodiment is shown in which the second body 2 is assigned two connecting elements or pins 78 and 79, of which the pin 78 is in the same way how the pin 76 shown in Fig. 8 acts - The second pin 79 strikes a circular, plate-like part 80, which is on a Ring 81 is arranged, which together with the chain 3 defines the maximum movement distance of the first body 1. To the Circular disk 80 also strikes a spiral compression spring 82 which, when the first body 1 moves in the direction of the second body is compressed and between the first body 1 and the Actuating body 4 maintains a strong spring force. The device shown in FIG. 1 is particularly suitable for use on the driven side of a V-belt drive, of course it is equally possible to use the device on the drive side to use.

009830/1315

Claims (9)

DIpI. Ing Hei'-z-ί »* -. '■ -.-> -:,. · -,' 0—3 Müml ·. -τ- 81, Coiimaslrafce 81 -Telephone; (0811) 48 38 20, - 11 - PATENT CLAIMS 1.) Device in rotating machine or motor units, both for example in V-belt drives, shaft couplings or the like, with at least one first, in the direction of the rotating shaft on a second, essentially immovable body in this direction to and from this movable body, which with the two, j th body via one or more, actuated by centrifugal forces bare links is connected / which is used to adjust the axial distance between the bodies depending on the size] serve the centrifugal force, characterized in that j that the first body (1; 36) is connected to an engaging, locking, driving, regulating or otherwise acting body (4; 42) or allows it to be driven in some other way, and that the first body (1; 36 ) and the actuating body (4; 42) are arranged on both sides of the second body (2; '38) in such a way that when the first and second bodies approach, the actuating body moves away from the second body and vice versa. 2. Device according to claim 1, characterized in that that the first body (1; 36) with the actuating body (4; 42.) Via pins, rods or similar connecting elements (9, 10; 41; 68; 73,74,76) is in connection, 3. Apparatus according to claim 2, characterized in that the «connecting elements are passed through openings or slots (11, 12; 43) of the second body. 0U9S3Q / 13 '' ■■ ti ■ - - ■ ' ~ *' ^Λ ■■■■ ■: '■ - ■ -' ■■ -. ιν.α, χ ,, fr 81 · Telephone: (0811) 48? 3 30 - 12 - 4. Apparatus according to claims 1 to 3, wherein the centrifugally actuated member of two relative to each other there is pivotable legs which are connected to one another via a common joint and the free end of a Leg is articulated to the second body, thereby characterized in that at least one leg (62) is in the area of the joint provided between the legs (64) has a thickening (6 5). 5. Apparatus according to claim 4, characterized in that that the thickening (65) of one leg (62) is articulated to the fork-shaped part (66) of the other leg (63). 6. Device according to one or more of claims 1 to 5 in combination with a V-belt drive, which as a function the gear ratio changes automatically from the speed, characterized in that the actuating body (4) one half of a V-belt pulley (6) forms that the first body (1) is a hub or a hub-like part, which fc is axially movable with respect to a shaft (5), and that the second Body (2) is a ring or an annular part which is essentially axially immovable with respect to the shaft (5). 7. Apparatus according to claim 6, characterized in that the second body or ring (Z) has one or more weight pieces (3) which, by the action of centrifugal force, displace the one pulley half (4) in the direction of the second half (8 ) of the pulley. 009830/1315 al I-.Q. M-; 81 Telephone: (0811) 43 38 20 - 13 - 8. Device according to one or more of claims 1 to 5 in combination with a shaft coupling, because you draw r c h ge ke η η, that the actuating body (4?) on a drive shaft (33) is axially displaceable, on which the first body (36) and the second body (38) are also arranged, wherein the actuating body drives a driven shaft (34) or a part connected to it. 9. Apparatus according to claim 8, characterized in that that the actuating body (42) consists of a plate or a plate-shaped Part to. A second plate (54) is driven, preferably via an elastic ring, for example via a V-belt (46), with the second plate torsionally rigid on the driven one Shaft (34) is set. ¹ O 0 0 9830 / -. 13 * 15