DE10033684A1 - Rotating device has housing with pinion for engaging flywheel gear rim or similar, torque infeed, attachment device for fixing rotation device, reduction gear between pinion and infeed - Google Patents

Abstract

The device has a housing with a pinion (5) mounted within it for engagement with a gear rim (6) of a flywheel or similar, a torque infeed (19) and an attachment device on the housing for fixing the rotation device. A reduction gear (13) is arranged between the pinion and the torque infeed. A meshing device is associated with the pinion.

Description

The invention relates to a gymnastics device, in particular especially for gymnastics of engines, with a housing, one in mounted pinions for engagement in the ring gear of the Schwungra of or the like, a torque introduction and one the gymnastic device located on the housing fastening device.

In practice, gymnastic devices are already known which z. B. engines or their flywheel, col ben- and crankshaft masses are gymnastic for the necessary Settings, e.g. B. to make the valves. This Known gymnastic devices are usually permanently attached to the engine and their pinion acting on the ring gear is without Translation designed. This requires a large torque be initiated to move the heavy masses and also to keep. This usually happens with long levers for which a sufficiently large space must be available and on the a high effort is required. Also need to do this  all parts should be very large and sturdy so they don't have claimed or destroyed.

Most of the time, the space available on the engine is very cramped, whereby an optimal placement is not possible. Also be the known gymnastics devices do not have sufficient Si safety precautions, which makes it possible for im Motors operating gymnastics initiated a starting process can be. This can lead to the most serious accidents.

The invention is therefore based on the object, a gymnastics to create direction of the type mentioned by which safe gymnastics with little effort guaranteed is.

This object is achieved in that between between the pinion and the torque transmission a subset tongue is present.

When using the gymnastics device according to the invention is a much less effort required, including the Parts belonging to torque introduction can dim dim be based. With appropriate interpretation of the reduction is a gymnastics with z. B. pneumatic screwdrivers, drills or a simple hand ratchet possible.

According to an advantageous embodiment of the invention Pinion assigned a single-track device. This has the we considerable advantage that the gymnastic device in engine operation does not have to run. Therefore, the camps in the Turnvor need direction not designed for the long running times of the motor a much lower quality is sufficient Corresponds to gymnastics times.

The technology of the single-track devices is from the starter heritage drove known and already proven many times. There is indeed  the automatic engagement after the start command, for which purpose conscious manual action is required. This is there according to an advantageous development of the invention by achieved that the single-track device from one, the rit cell-bearing, stored in a bell, over a steep slope winch adjustable Bendix and one on the Bendix kenden adjusting element. Through the conscious manual Acting is an accidental activation by an operator button excluded, which is also a safety aspect is.

Starting systems are attached to the engines, which with under different media, such as compressed air or electricity These existing media should continue to be used and their presence or release for security vante aspects are used. This will come before preferred configuration thereby achieved when security systems available, which work with compressed air and / or electricity According to the starting system, the gymnastics device therefore be interpreted with no limitation to one system he follows.

To make gymnastics even safer, is in the gymnastics direction integrated another security element, which at the activation of the gymnastics device automatically activated becomes. The adjusting element expediently carries an Si Safety sealing washer is in the housing by means of a thread adjustable, has a safety device on the outside of the housing tion and a key width and contributes to the inside of the housing an adjustment bolt on the single-track device. As soon as the adjustment element is actuated, the Si Safety washer moves and comes out of its egg  NEN end position in which the engine starts automatically is possible at all, since no air pressure can build up.

Security is achieved depending on the housing. The safety sealing washer is therefore preferably located in an Housing sealing cone and ends in the sealing cone one acting in the housing via a connection bare safety hole. The connection is made with the Start relay connected. The start command is due to release the compressed air, so if the safety is not compressed air into the housing escape and blow off over the gap there. Starting the Motors is therefore not possible.

So that the grease in the bearings is not removed by the compressed air blow is expedient in the housing a vent drilling is available. With a correspondingly large vent a quick blow-off is achieved, whereby not the slightest increase in pressure is achieved.

According to an advantageous embodiment, the Un replacement by a bell adjuster located on the bell toothing and one, on an introduction pinion of the torques initiation of existing single toothing, the introduction toothing has fewer teeth than the bell teeth. Depending on the engine conditions and the required torque ratios as well as moments thereby the reduction can be designed, whereby for each a suitable gymnastics device is available for the motor can be put. It is also advantageous that enough There is sufficient space around the parts design. The moment initiated is always in ver ratio of the reduction is smaller than that given on the pinion  Moment, causing the application of the element to the gymnast direction is easily accomplished. Because the relationship is reversed to speed, d. H. is on the introduction pinion a much higher speed than on the pinion the engine can be turned very precisely.

If gymnastics are to be avoided in general, this is the only thing prevent torque. It will be simplest possible if according to a further advantageous embodiment the invention for the introduction pinion in the housing bearing len are incorporated, the introductory pinion via an input set hole can be inserted or removed in the housing and there is at least one anti-insertion device. The camp places in the housing are for a play fit with the Wälzla like the introductory pinion provided, which makes it easy Insertion and removal is made possible. Also can by Inserting an introduction pinion with a different gear influence, or number of teeth on the reduction ratio influence be taken. To do this, the teeth of the introductory rit zels with a correction factor. About the stake securing the entry pinion in the insertion hole.

A fast and everywhere practicable gymnastics without special tool is reached if the torque input is preferred the sprocket is a key width. At the A special tool can also be used at any time across flats easy to adapt because the corresponding wrench size is easy can be produced.

If a further step-up or step-down is to be achieved, which already cooperates with the existing reduction is advantageously at the torque introduction of the  Introductory pinion an additional gear can be attached. This one by achievable reduction ratio is such that a very easy gymnastics of the engine with very little moment is enough. The auxiliary transmission is preferably self-locking ming worm gear, which makes a great additional security unit is reached because the engine is not turning automatically can continue to turn or turn back.

The engine must not be started when the additional gearbox is attached be left even when the adjustment work is finished are. In order to avoid this, preferred training is required the invention, the additional gear via a locating plate on Ge Can be attached to the housing, the fixing plate has at least one the additional gear rotation lock, the Fi xierblech works with the adjustment lock of the adjustment element tes together, the fixing plate gives an existing one in the housing ne, protective hole connected to the connection free and on the fixing plate is an actuation tab for one Circuit breaker located on the housing. Through this Several safeguards are guaranteed. one on the other hand, the additional gear is ge in a predetermined position holds, causing a twisting and possible crushing is avoided. On the other hand, the attachment of the Zusatzge drive only possible if the adjustment element is fully screwed in and the fixing plate into the adjustment lock can grip, and thus the safety hole is open. This also takes the actuation tab a certain La and the fixing plate covers the protective hole no more. Coming air can escape.

The screwed-on condition of the fixing plate should also elsewhere, e.g. B. the steering position. This is guaranteed if after preferred training the  Invention the actuating tab of the fixing plate in the Ge screwed state on the actuator of the Circuit breaker acts. This is an advantage for the Feh ler diagnosis if the engine after the setting process has been completed should be started, but the engine does not start. That before existing signal of the circuit breaker gives an indication of that Fixing plate still installed, which must be removed to start.

The position of the additional gear and the fixing plate must be in relation to each other always be unique, with the additional gear on the torque ment introduction must be firmly held to the axial Ab to avoid slipping. Therefore, provision is also preferably made the additional gearbox on his take up the torque output to receive the torque initiation took and has a circumferential groove receiving the fixing plate. This is also the perfect transmission of the torque mentes guaranteed.

The highest security requirements have been met if advantageously the additional gear and the Einlei tion pinion is integrally formed. So only is the gymnastics with the additional gear required, making all the aforementioned fuses are present.

An indication of an incorrectly turned adjustment element is achieved when according to advantageous Ausge design in the housing on the way to the safety hole or to the protective hole or in or in front of the connection a pressure ring sor is present. Once the security hole or the The protective hole is not closed correctly Press more and the missing signal makes the mistake easier lersuche.  

On the one hand, dirt inside the gymnastics device to avoid and on the other hand with the additional gear removed To enable gymnastics is expediently the use bore of the housing with the input pinion removed or removed additional gearbox with one-piece input pinion through a blind plate that seals the protective hole closable.

On the one hand, the installation situations on different moto ren different and on the other hand is the accessibility to the key width of the additional gearbox is not always the same. Around therefore to meet different mounting situations has the additional transmission according to an advantageous embodiment at least two with the rotation lock of the fixing plate interacting fixing surfaces. The additional gear can thus grown differently and adapted to the application become.

There are holes in the engine industry for starters known pictures, which existed on the intended diameter The production for this type of fastening is also as assembly is also inexpensive. Therefore, it is more appropriate as the fastening device on the housing from a Befe circumferential shoulder. Preferably the fastening device has the shape of a SAE flange, which also enables the installation in one place on which otherwise a starter is attached.

It is understood that the above and next Features to be explained not only in the respective specified combination, but also in other combination or stand alone can be used without the scope of the to leave lying invention. Therefore, the Si  security elements, which are here almost exclusively for printing air are designed, of course also for another Medium designed and coordinated.

The idea underlying the invention is in the drawing shown and explained in more detail below. Show it:

Fig. 1 shows a section through an inventive device with turn disengaged Einspurvor direction and attached auxiliary transmission,

Fig. 2 shows the section according to FIG. 1, gear engaged with the starter head and removed Zusatzge,

Fig. 3 shows the view of Fig. 1 in the direction of the Pfeiffer les III,

Fig. 4 is the view of Fig. 3, in the direction of les Pfeiffer IV, drawn rotated by 180 °,

Fig. 5 shows the view in Fig. 2 in the direction of les Pfeiffer V,

Fig. 6 shows the view of Fig. 5 in the direction of les Pfeiffer VI,

Fig. 7 towards an alternative embodiment of Turnvor,

Fig. 8, the gymnastics device according to FIG. 7, with built additional gear

Fig. 9 is the view of FIG. 3 with an alternative to the situation of the auxiliary transmission and

Fig. 10 shows the view. 3 bes of FIG with a further alternative mounting situation of the Zusatzgetrie.

The gymnastic device 1 according to FIG. 1 is screwed onto a motor, not shown. Here is the circulation shoulder 2 of the fastening device 73 on the engine, the screwing is done via the mounting holes 3 (see Fig. 3, 5, 9 and 10). The Einspurvorrichtung 4 is moved out of the gymnastic device 1 and the pinion 5 is in a grip with the ring gear 6 of the flywheel 7th The housing 8 of the gymnastics device 1 consists of a front cover 9 and a rear shell 10 , which are screwed together. A flange 11 is pushed onto the front cover 9 and screwed to it. The flange 11 carries the peripheral shoulder 2 with the fastening holes 3 . Of course, the order shoulder 2 can be made in one piece with the front cover 9 . The front cover 9 is drilled out and in it lies the bell 12 with the engagement device 4 with the interposition of bearings and seals rotating, but axially held. In the back shell 10 is a reduction 13 , bewerk created by a bell toothing 14 and an introduction toothing 15 , positioned. The bell toothing 14 has a large pitch circle diameter, the Einleitungsver toothing 15 has a small pitch circle diameter. The introduction pinion 16 carrying the introduction toothing 15 protrudes from the bottom 17 of the rear shell 10 and carries the additional gear 18 there, which in turn has the torque introduction 19 .

The pinion 5 is extended or retracted via the engagement device 4 . For the starter head 4 mounted in the bell jar 12, and a ball thread 20 ADJUSTABLE re Bendix 21, and an adjustable in a debohrung in the bottom 17 in a threaded adjustment 22 23 belongs. The adjusting element 23 is coaxial with the Bendix 21 and presses with an adjusting bolt 24 against the Bendix 21 , which rests under the action of a compression spring 25 on the adjusting bolt. The adjustment element 23 has at one end of the adjusting bolt 24 on which shoulder 26 connects having a courage tern 27 firmly screwed safety sealing disc 33 carries, at the further one, captive in the threaded bore 22, the ground by projecting 17, a thread 72 carrying Threaded bolt 28 connects. On the threaded bolt 28 adjoins outside of the housing 8, an adjustment 29 in the form of a circumferential recess 30 , on which a cylinder 31 with an end wrench size 32 closes further to the outside.

In the bottom 17 of the rear shell 10 is integral sealing washer in the direction of the safe 33, a sealing cone incorporated 34, in which the safety sealing disc 33 the actuating element in an end position of the Ver 23 rests, in the case shown the sealing cone 34 is however free. From the port 35 is a safety bore 36 which ends in the sealing cone 34 . The blind part of the safety hole is closed with a plug 37 ver. In the area of the inlet pinion 16 , a vent hole 38 is introduced into the rear shell 10 of the housing 8 , through which compressed air flowing in through the safety hole 36 can escape.

In the back shell 10 of the housing 8 bearings 39 are worked, in which the input pinion 16 is mounted. On the introduction pinion 16 there is a ball bearing 41 on a pin 40 and a needle bearing 43 on the shaft 42 . Ku gel bearing 41 and needle bearing 43 are fixed on the introduction pinion 16 by means of retaining rings. The Einleitungsrit zel 16 is performed in one piece with the additional gear 18 in this figure. Between the input pinion 16 and the Ge gear housing 44 of the auxiliary gear 18 , a circumferential groove 70 is present, in which a fork 45 (see FIG. 3) of the fixing plate 46 rests and axially holds the auxiliary gear. On Fi xierblech 46 , two rotation locks 47 are folded, on de nen the additional gear 18 with its fixing surfaces 48 comes to the situation and is thus held in a rotationally fixed.

In the screwed-in state of the adjustment element 23 , the adjustment lock 29 comes to rest in the area of the outside 49 of the base 17 . The fixing plate 46 can only be screwed on in this position, since the securing fork 50 must be inserted into the adjustment lock 29 . It is not possible to insert it elsewhere, since both the threaded bolt 28 and the cylinder 31 are thicker than the width of the securing fork 50 .

Fig. 2 shows the Turn device 1 in which the pinion 5 is not engaged with the ring gear 6 of the flywheel. 7 The adjusting element 23 is turned back and the locking washer 33 is in the sealing cone 34 and closes the safety hole 36th The engagement device 4 is also retracted and is under the action of the compression spring 25 against the adjusting bolt 24 of the adjusting element 23 . The adjustment lock 29 is no longer in the area of the outside 49 of the base 17 and a fixing plate 46 would no longer be mountable. From the outside 49 of the bottom 17 , the insert hole 51 is incorporated, which has the bearings 39 for the ball bearing 41 and the needle bearing 43 . The introduction pinion 16 with the additional gear 18 thereon was removed from the insertion hole 51 . The insertion hole 51 is closed by means of a blind plate 52 , where the protective hole 53 is also sealed (see FIG. 5). The blind plate 52 has a large Ausneh tion 54 and can thus embrace the adjusting element 23 .

In FIG. 3, the rear view is shown on the gymnastic apparatus 1 with mounted auxiliary transmission 18. From the fixing plate 46 , two screw tabs 55 can be seen in which screws 56 are inserted and fix the fixing plate 46 on the outside 49 of the base 17 . Furthermore, you can see the securing fork 50 which engages around the adjusting element 23 in the recess 30 . Between the screw tabs 55 and the securing fork 50 , the anti-rotation device 47 is folded on each side, against which the additional gear 18 with its fixing surfaces 48 comes to rest. The housing 8 of the gymnastics device 1 is round in wesentli, and below the additional gear 18 has a protuberance 57 in which the introducing pinion 16 lies. About the diameter of the gymnastic device 1 three Umlaufschul tern 2 with the mounting holes 3 partially away. In the bottom 17 there is a cutout 58 in which the circuit breaker 59 is fastened. Part of the securing fork 50 is extended to egg ner actuation tab 60 , which comes to lie above the circuit breaker 59 and acts on the actuation element 61 . The safety bore 36 extends from the connection 35 . Furthermore, auxiliary bores 62 are provided in order to connect the protective bore 53 opening into the outside 49 to the compressed air circuit, ie the safety bore 36 . The impermissible openings in the auxiliary bores 62 are closed with plugs 37 . Under the additional gear 18 , the shape of the fork 45 from the fixing plate 46 is drawn with dashed lines. In the present example, the torque introduction 19 takes place on the hexagon 63 of the auxiliary transmission 18 .

The side view of this is shown in FIG. 4. In the Ge housing 8 , the cutout 58 is incorporated, in which the circuit breaker 59 is screwed. The fixing plate 46 is screwed on by means of screws 56 . The rotation locks 47 are upright and the additional gear 18 lies with its fixing surfaces 48 on the rotation locks 47 . The actuation supply tab 60 of the fixing plate 46 has the actuating element 61 pressed fully into the circuit breaker 59 and a corresponding signal is reported via the lines 64 to the control station. The adjustment element 23 is screwed in and thus the securing fork 50 can engage in the adjustment lock 39 .

In FIGS. 5 and 6, the auxiliary transmission 18 is removed with its Einsetzritzel sixteenth The blind plate 52 is screwed onto the outside 49 by means of the screws 56 . The blind plate 52 covers the protective bore 53 and seals it, as a result of which compressed air can no longer escape. The screwed in the cutout 58 circuit breaker 59 is not covered by the blank plate 52 , whereby its actuation supply element 61 is unloaded and another signal is reported via lines 64 to the control station.

Referring to FIGS. 7 and 8, the safety knob 29 on the adjustment element 23 a lock nut 65 which is tightened in the two end positions. The screw-in path of the adjusting element 23 is limited by a pin 75 which extends beyond the threaded bolt 28 . In the insertion bore 51 , an introduction pinion 16 is inserted which has a wrench size 66 as a torque input line 19 at its end facing the outside 49 . At this width across flats 66 the gymnastics can be done with a ratchet, with no self-locking of the reduction 13 . Against slipping out, the introduction pinion 16 on the needle bearing 43 is protected by a securing ring 67 .

According to FIG. 8, an additional gear 18 is wide on the key 66 of the initiation of the pinion 16 placed. Plugging is carried out by an existing recording at the output 69 68 which is provided on the auxiliary transmission 18, in which the Keyring sized open- ended 66 of the torque introduction 19 of the Einleitungsrit Zels 16 is immersed. At the exit 69 there is also a circulation groove 70 in which the fixing plate 46 comes to rest. In this embodiment, the torque can be applied either with or without additional gear 18 .

In FIGS. 9 and 10 two further mounting situations of the auxiliary gear 18 are illustrated. Fastening surfaces 48 are provided on three sides symmetrical to the center 71 , whereby three different mounting situations can be realized in cooperation with the rotation lock 47 of the fixing plate 46 .

LIST OF REFERENCE NUMBERS

1

turning gear

2

circumferential shoulder

3

mounting hole

4

starter

5

pinion

6

sprocket

7

flywheel

8th

casing

9

front cover

10

back cover

11

flange

12

Bell jar

13

reduction

14

bells teeth

15

Introduction teeth

16

Introduction pinion

17

Bottom of

10

18

additional gear

19

torque introduction

20

coarse thread

21

Bendix

22

threaded hole

23

adjustment

24

adjusting pin

25

compression spring

26

paragraph

27

mother

28

threaded bolt

29

safety knob

30

puncture

31

cylinder

32

Wrench size of

23

33

Security sealing washer

34

sealing cone

35

Connection

36

security hole

37

Plug

38

vent hole

39

depository

40

spigot

41

ball-bearing

42

shaft

43

needle roller bearings

44

Gearbox from

18

45

Fork of

46

46

Fixing plate

47

rotation

48

fixation

49

outside

50

retaining fork

51

insertion hole

52

blanking plate

53

protection hole

54

recess

55

Anschraublasche

56

screw

57

protuberance

58

countersink

59

breaker

60

operating tab

61

Actuator from

59

62

auxiliary bore

63

hexagon

64

management

65

locknut

66

Wrench size of

16

67

circlip

68

admission

69

output

70

circumferential groove

71

center

72

thread

73

fastening device

74

Einsetzsicherung

75

pen

Claims (21)

1. gymnastics device, in particular for gymnastics of motors, with a housing, a pinion mounted therein for engagement in the ring gear of the flywheel or the like, torque introduction and a gearing device which fixes the gymnastics device on the housing, characterized in that between the pinion ( 5 ) and the introduction of torque ( 19 ) there is a reduction ( 13 ). 2. gymnastics device according to claim 1, characterized in that the pinion ( 5 ) has a single-track device ( 4 ). 3. gymnastics device according to one of claims 1 to 2, characterized in that the single-track device ( 4 ) from a, the pinion ( 5 ) carrying, in a bell ( 12 ) mounted, via a high-helix thread ( 20 ) adjustable Bendix rem. ( 21 ) and an adjusting element ( 23 ) acting on the Bendix ( 21 ). 4. gymnastics device according to one of claims 1 to, there characterized by that security systems in place are, which work with compressed air and / or electricity th. 5. gymnastics device according to one of claims 1 to 4, characterized in that the adjusting element ( 23 ) carries a safety sealing washer ( 33 ), by means of a Ge thread ( 72 ) in the housing ( 8 ) is adjustable, an outside locking device ( 29 ) and has a key width ( 32 ) and acts on the inside of the housing with an adjusting bolt ( 24 ) on the engagement device ( 4 ). 6. gymnastics device according to one of claims 1 to 5, characterized in that the safety sealing washer ( 33 ) in a housing ( 8 ) located sealing cone ( 34 ) and in the sealing cone ( 34 ) in the housing ( 8 ) extending via a connection ( 35 ) actinable safety bore ( 36 ) ends. 7. gymnastics device according to one of claims 1 to 6, characterized in that a vent hole ( 38 ) is present in the housing ( 8 ). 8. gymnastics device according to one of claims 1 to 7, characterized in that the reduction ( 13 ) by one on the bell ( 12 ) bell teeth ( 14 ) and one, on an introduction pinion ( 16 ) of the torque introduction ( 19 ) existing Einleitungsver toothing ( 15 ) is accomplished, wherein the introducing toothing ( 15 ) has fewer teeth than the bell toothing ( 14 ). 9. gymnastics device according to one of claims 1 to 8, characterized in that for the introductory pinion ( 16 ) in the housing ( 8 ) bearings ( 39 ) are incorporated, the introductory pinion ( 16 ) via an insertion hole ( 51 ) into the housing ( 8 ) can be used or removed and at least one securing device ( 74 ) is present. 10. Turning device according to one of claims 1 to 9, characterized in that the torque introduction ( 19 ) on the introduction pinion ( 16 ) is a key width ( 66 ). 11. Turning device according to one of claims 1 to 10, characterized in that an additional gear ( 18 ) can be fastened to the torque introduction ( 19 ) of the introduction pinion ( 16 ). 12. Gymnastic device according to one of claims 1 to 11, characterized in that the additional gear ( 18 ) is a self-locking worm gear. 13. gymnastics device according to one of claims 1 to 12, characterized in that the additional gear ( 18 ) via a fixing plate ( 46 ) on the housing ( 8 ) can be fastened, the fixing plate ( 46 ) at least one the additional gear ( 18 ) rotationally secure rotation lock ( 47 ), the fixing plate ( 46 ) interacts with the locking device ( 29 ) of the adjusting element ( 23 ), the fixing plate ( 46 ) releases a protective hole ( 53 ) in the housing ( 8 ) that is connected to the connection ( 35 ) and on the fixing plate ( 46 ) there is an actuating tab ( 60 ) for a circuit breaker ( 59 ) located on the housing ( 8 ). 14. Gymnastic device according to one of claims 1 to 13, characterized in that the actuating tab ( 60 ) of the fixing plate ( 46 ) in the state ( 8 ) screwed on the actuating element ( 61 ) of the protective switch ( 59 ) acts. 15. gymnastics device according to one of claims 1 to 14, characterized in that the additional gear ( 18 ) on its the torque introduction ( 19 ) receiving from output ( 69 ) receiving the torque introduction ( 19 ) de receptacle ( 68 ) and one the fixing plate ( 46 ) has receiving circumferential groove ( 70 ). 16. Turning device according to one of claims 1 to 15, characterized in that the additional gear ( 18 ) and the introduction pinion ( 16 ) is integrally formed. 17. Gymnastic device according to one of claims 1 to 16, characterized in that a pressure sensor is present in the housing ( 8 ) on the way to the safety hole ( 36 ) or to the protective hole ( 53 ) or in or before the connection ( 35 ). 18. Turn Device according to one of claims 1 to 17, as by in that the fitting hole (51) of the housing (8) for remote initiation pinion (16) or remote auxiliary transmission (18) tung pinion with single Einlei (16) through a protection hole ( 53 ) tightly closing blind plate ( 52 ) can be closed. 19. Gymnastics device according to one of claims 1 to 18, characterized in that the additional gear ( 18 ) has at least two with the rotation lock ( 47 ) of the fixing plate ( 46 ) cooperating fixing surfaces ( 48 ). 20. Gymnastic device according to one of claims 1 to 19, characterized in that the fastening device ( 73 ) on the housing ( 8 ) consists of a fastening bore ( 3 ) having a circumferential shoulder ( 2 ). 21. Turning device according to one of claims 1 to 20, characterized in that the fastening device ( 73 ) has the shape of a SAE flange.