Attachment device for a shaft of an excavator

Abstract

The invention relates to an attachment device for a shaft (14) of an excavator (11), having a rotating unit (22), which comprises a drive housing (66) having an upper cover surface (67) formed at least in sections, having a rotary drive (24), by means of which a coupling (23) can be rotated relative to the drive housing (66) about an axis of rotation (26), having a coupling unit (33), which is arranged at least partially on the upper cover surface (67) of the drive housing (66) and which comprises an attachment bearing point (38) for connection to the shaft (14) and a coupling bearing point (37) for connection to a pivoting kinematic system (27) arranged on the shaft (14), wherein a plane of rotation (39) is formed between the drive housing (66) and the coupling (23), an imaginary connection plane (65) for the coupling unit (33) is formed by the cover surface (67) of the drive housing (66), which is formed at least in sections, and the attachment bearing point (38) of the coupling unit (33) is arranged in the imaginary connection plane (65) or in the plane of rotation (39) or between the imaginary connection plane (65) and the plane of rotation (39).

Description

[0001] Attachment device for an excavator boom

[0002] The invention relates to an attachment device for a boom of an excavator.

[0003] From DE 20 2011 100 482 U1 an excavator is known which accommodates an attachment device at a free end of the boom, which is pivotally connected about an attachment axis on the boom to a coupling device of the attachment device. A pivot drive is provided on the coupling device, which in turn has a coupling opposite the coupling device for receiving a work tool. The attachment device comprises a rotating device with a rotary drive, by means of which the coupling can be rotated about a rotational axis relative to a drive housing of the rotating device. Furthermore, a further pivot drive is provided on an upper side of the drive housing, by means of which the entire rotating device can be pivoted about an axis perpendicular to the rotational axis relative to the coupling device. The coupling device has an attachment bearing point and a coupling bearing point, both of which are located above the further pivot drive.This results in a large overall height of the attachment between the coupling device's mounting point and the coupling. This impairs the attachment's ability to pivot relative to the boom.

[0004] The invention is based on the object of creating an attachment device for a boom of an excavator, by means of which an attachment with a larger swivel range can be controlled.

[0005] This object is achieved by an attachment device in which a rotational plane is formed between a drive housing of the rotating device and the coupling, and a fictitious connection plane for the coupling device fixedly arranged thereon is formed by the cover surface of the drive housing, which is formed at least in sections, wherein the attachment bearing point of the coupling device lies in the fictitious connection plane of the cover surface of the drive housing, which is formed at least in sections, or in the rotational plane or in a region between the connection plane and the rotational plane, and the coupling bearing point of the coupling device is positioned above the connection plane. This arrangement enables the rotational axis, about which the attachment device can be pivoted on the handle, to be lowered towards the rotational plane of the attachment device.The rotation axis of the attachment device lies in the axis of the attachment bearing point, whereby the attachment device is pivotally fixed to the attachment axis of the handle.

[0006] Preferably, the coupling device is provided on the drive housing in a rotationally fixed and / or non-pivotable manner. This enables direct power transmission.

[0007] Furthermore, it is preferably provided that the coupling bearing point of the coupling device is positioned in an area above the rotary union to the drive housing. This allows for a central force introduction into the coupling bearing point via the pivoting kinematics. Furthermore, the arrangement of the attachment bearing point and coupling bearing point can enable improved leverage ratios and thus increased power transmission to the implement.

[0008] Preferably, the coupling device is detachably attached to the notional connection plane or to the drive housing. Alternatively, the coupling device can also be integrally connected to the connection plane of the drive housing.

[0009] The coupling device preferably has two cheeks which are detachably provided on the cover surface of the drive housing, which extends at least in sections. This also allows the cheeks to be adapted depending on the handle or the design of the handle end in order to achieve a large pivoting range of the attachment. Alternatively, it can be provided that the cheeks of the coupling device are integrally formed on the drive housing. This can enable reduced-cost production. In particular, this can result in weight savings. Furthermore, it is preferably provided that the at least two cheeks of the coupling device are connected to one another by at least one connecting plate. This allows the cheeks and the connecting plates to be detachably connected to the rotating device as a unit.In particular, it is provided that the at least one connecting plate can be connected to the rotating device by means of a screw connection. This provides flexibility because the coupling device is provided on the rotating device in an interchangeable manner, thus enabling adaptation to different handles by exchanging the coupling device.

[0010] The drive housing of the rotating device advantageously has at least one bevel or flattened portion between the cover surface, which is formed at least in sections, and the end face of the drive housing, to which the attachment bearing point is assigned. This allows the attachment bearing point to be moved closer toward the drive housing. The distance between the rotational axis of the attachment bearing point of the coupling device and the rotational axis of the rotating device, about which the coupling is rotatably mounted relative to the drive housing, can thus be further reduced.

[0011] Furthermore, it is preferably provided that the at least one bevel is inclined at an angle of between 15° and 75° relative to the cover surface in the direction of the end face of the rotating device. Preferably, only one bevel is provided between the cover surface and the end face of the rotating device. This can be inclined at an angle of 45° to the cover surface. Alternatively, two or more bevels can be provided in a row. These can be arranged in a row at the same or different angles to one another.

[0012] In particular, the at least one bevel shortens the distance between the axis of the attachment bearing point and the rotational axis of the rotating device. This allows for improved force ratios. Furthermore, the at least one bevel also allows for the reduction of shear forces on a screw connection for the coupling device to the rotating device. This allows for a reduction in screw cross-sections.

[0013] According to a further advantageous embodiment of the attachment device, the at least one connecting plate of the coupling device is connected to the slope or rests against the slope, and the at least one further connecting plate of the coupling device is connected to the cover surface of the rotating device. This has the advantage that shear forces occurring in the coupling device can be reduced.

[0014] Furthermore, it is preferably provided that the attachment bearing point of the coupling device is assigned to the slope or the front face of the rotating device. This assignment also depends on the positioning of the attachment bearing point between the connection plane and the rotation plane. This assignment can also depend on the size of the slope, since this can extend from the cover surface at least partially or completely opposite the front face of the rotating device.

[0015] In a further advantageous embodiment, it is provided that the attachment bearing point and the bearing point of the coupling device are arranged at an angle ß to the attachment device, which angle is formed by two fictitious straight lines. The first or one fictitious straight line extends through the attachment bearing point and the coupling bearing point and the second or the other fictitious straight line extends in a plane of rotation or parallel to a plane of rotation of the rotating device, which is offset in the direction of the cover surface. Due to this offset arrangement of the coupling bearing point and the attachment bearing point of the coupling device, the attachment bearing point can be offset in the direction of the plane of rotation of the rotating device, thereby enabling a reduction in the installation height in the attachment device to the handle. In particular, this makes it possible to increase the pivoting angle range of the attachment device to the underside of the handle.

[0016] Advantageously, the imaginary straight lines of the attachment device are provided at an angle ß of 15° to 45°, preferably 25° to 35°. This, in turn, enables an advantageous connection of the attachment device to both a straight and a bent section of the handle.

[0017] Furthermore, it is preferably provided that a rotary feedthrough is provided in the drive housing, which has a stator that is rotationally fixed to the drive housing and a rotor that is rotatable relative to the stator, which is connected to a coupling and which is connected to at least one connection, preferably three connections, in the coupling. This enables a compact design for the attachment device. In addition, an internal supply and discharge of a drive fluid from and to a working device or to the coupling can be enabled. Advantageously, one connection is provided as a supply line for supplying a working fluid. Another connection is connected to a supply line for discharging the working fluid, and a third connection can be provided for a leakage fluid.

[0018] The invention, as well as further advantageous embodiments and developments thereof, are described and explained in more detail below with reference to the examples shown in the drawings. The features shown in the description and the drawings can be used individually or in any combination according to the invention. They show:

[0019] Figure 1 is a schematic side view of an excavator with a stick, an attachment and a working device, Figure 2 is a schematic side view of a stick for an excavator with a cranked stick section,

[0020] Figure 3 is a perspective view of the handle according to Figure 2,

[0021] Figure 4 is a perspective view of an attachment device for connection to the handle according to Figure 2,

[0022] Figure 5 is a schematic side view of the attachment device according to Figure 4,

[0023] Figure 6 is a schematic sectional view of the attachment device along the line IV-IV in Figure 4,

[0024] Figure 7 is a perspective view of the handle according to Figure 2 with an attachment device according to Figure 4,

[0025] Figure 8 is a schematic side view of the handle according to Figure 3 with an attachment device according to Figure 4 in a first working position,

[0026] Figure 9 is a schematic side view of the arrangement according to Figure 7 in a further working position,

[0027] Figure 10 is a perspective view of an alternative embodiment of the handle to Figure 3,

[0028] Figure 11 is a perspective view of the handle according to Figure 10 with an attachment device according to Figure 4 in a working position,

[0029] Figure 12 is a perspective view of an alternative embodiment of the handle to Figure 3, Figure 13 is a perspective view of the handle according to Figure 12 with an attachment device according to Figure 4 in a working position,

[0030] Figure 14 is a perspective view of an alternative embodiment of the handle to Figure 12,

[0031] Figure 15 is a perspective view of the handle according to Figure 14 with an attachment device according to Figure 4 in a working position, and

[0032] Figure 16 is a schematic side view of an excavator with an alternative working device to Figure 1.

[0033] Figure 1 shows a schematic side view of an excavator 11. The excavator 11 comprises a base machine 13 with a boom 12, which is articulated at the end to a stick 14. The boom 12 is moved up and down by a lifting cylinder 19. The boom 12 comprises at least one stick cylinder 18 for controlling a pivoting movement of the stick 14. At least one pressure cylinder 16 is provided on the stick 14, by means of which an attachment device 21 provided on the stick 14 can be controlled. At the end of the stick 14, the attachment device 21 is pivotally mounted in an attachment axis 17. This attachment device 21 can comprise a rotating device 22 with a rotary drive 24 and a coupling 23, in particular a quick-change coupling. The rotating device 22 comprises a drive housing 66. The rotary drive 24 enables the coupling to rotate relative to the drive housing 66 in a rotational axis 26. An interchangeable working device 25 is provided on the coupling 23.To control a pivoting movement of the attachment device 21, a pivot kinematics system 27 is provided. This comprises a deflector 28, which is pivotally connected to the stem 14 at one end via a deflector axis 29. The pivot kinematics system 27 further comprises a coupling 31, which is connected at one end to the deflector 28 via a common pivot axis 35. At the opposite end, the coupling 31 engages a coupling device 33. This coupling device 33 is a component of the attachment device 21 or is mounted on the attachment device 21. The drive housing 66 preferably has a cover surface 67 extending at least in sections, on which the coupling device 33 is provided. The pressure cylinder 16, in particular a piston rod of the pressure cylinder 16, engages the pivot axis 35 of the pivot kinematics system 27.

[0034] Figure 2 shows a schematically enlarged side view of the stem 14. Figure 3 shows a perspective view of the stem 14 according to Figure 2.

[0035] The boom 14 has a main boom section 50. At one end of the main boom section 50 is a boom bearing point 41, by which the boom 14 is pivotally mounted to the boom boom 12. Adjacent to this is a boom cylinder axis 42, in which the boom cylinder 18 of the boom boom 12 engages. From the boom bearing point 41, a lower side 43, designed as a lower chord, extends to the front boom end 48. Opposite, the boom 14 includes an upper side 45, designed as an upper chord. Provided on the upper side 45 is a pressure cylinder bearing 46 for receiving the pressure cylinder 16. The upper side 45 and the lower side 43 are aligned at an acute angle to one another, running in the direction of the deflector axis 29.

[0036] The handle 14 has a bent handle section 51. This bent handle section 51 is provided at the handle end 48. The handle 14 comprises a main handle section 50 with the handle bearing points 41 and 42 and the bent handle section 51. The mounting axis 17 is provided in the bent handle section 51. The bent handle section 51 extends from the deflector axis 29 toward the top side 45 of the handle 14. The bent handle section 51 is bent upwards at an angle a of, for example, 30° to the bottom side 43 of the handle 14. The angle for the bent of the handle section 21 is determined by two fictitious straight lines 52, 53. The straight line 52 extends through the mounting axis 17 and deflector axis 29 of the cranked stem section 51. The straight line 52 extends through the deflector axis 29 and preferably runs parallel to the underside 43 of the stem 14. The straight line 53 can also extend through the deflector axis 29 and stem bearing point 41.

[0037] The length of the offset stem section 51 can be determined from the angle a and a height HS between the mounting axis 17 and the deflector axis 29. The distance between the mounting axis 17 and the deflector axis 29 includes the height HS.

[0038] The offset stem section 51 is the same width as the main section 50 of the stem 14. For very long stems 14, the main stem section 50 can taper towards the offset stem section 51. The width of the offset stem section 51 and the distance between the cheeks 36 of the coupling device 33 are adapted to each other.

[0039] Figure 4 shows a perspective view of the attachment device 21. Figure 5 shows a schematic side view of the attachment device 21 according to Figure 4.

[0040] The coupling device 33 consists of two spaced-apart cheeks 36. The cheeks 36 can be connected to at least one connecting plate 34 extending between the cheeks 36. The at least one connecting plate 34 can rest against an upper side of the rotating device 22 and can preferably be releasably fastened thereto. A connecting plane 65 is formed between the upper side of the rotating device 22, to which the coupling device 33 is fastened, and the coupling device 33, in particular the connecting plate 34 of the coupling device 33. Each cheek 36 comprises a coupling bearing point 37 and an attachment bearing point 38. The coupling bearing point 37 and the attachment bearing point 38 are offset from one another at a height HK. The attachment bearing point 38 is recessed relative to the coupling bearing point 37. The attachment bearing point 38 of the coupling device 33 is located, for example, in the connecting plane 65.Alternatively, the attachment bearing point 38 can also be offset in the direction of a rotation plane 39 of the rotating device 22 or can be located in this rotation plane 39. The attachment bearing point 38 is offset laterally outwardly relative to the attachment device 21, in particular the rotating device 22, or is assigned to an end face of the rotating device 22.

[0041] The coupling bearing point 37 and the attachment bearing point 38 are arranged at an angle ß to the rotation plane 39, which angle is determined by two fictitious straight lines 56, 57. The fictitious straight line 56 extends through the coupling bearing point 37 and the attachment bearing point 38. The fictitious straight line 57 extends through the rotation plane 39 or is aligned parallel to it. This can also lie in the cover surface 67, which is formed at least in sections, of the drive housing 66 of the rotating device 22. The attachment bearing point 38 can lie on the straight line 57 or lower in the direction of the rotation plane 39, preferably within a height formed by the straight line 57 and the rotation plane 39. The angle ß between the straight lines 56, 57 is preferably provided in a range of 15° to 60°. In particular, an angle ß of 30° is provided. This angle ß preferably corresponds to the angle α.

[0042] Figure 6 shows a schematic sectional view along line VI-VI according to Figure 4. The rotating device 22 has a bevel 69 between the top side or the connection plane 65 and an end face 81 of the rotating device 22. This bevel 69 can, for example, be inclined at an angle of 45° to the connection plane 65. Alternatively, the bevel 69 can also be provided at an angle to the connection plane 85. This bevel 69 makes it possible, in particular, for the attachment bearing point 38 of the cheeks 36 to be offset, on the one hand, closer to the rotating device 22 and / or, on the other hand, downwards relative to the connection plane 65. This arrangement has the particular advantage of enabling a reduced introduction of force from the stem 14 into the attachment device 21, whereby shear forces acting on the coupling device 33 of the attachment device 21 during operation can be reduced.The coupling device 33 is preferably connected to the rotating device 22 by a screw connection 83. In particular, one or more connecting plates 34 rest against the top side of the rotating device 22 and against the slope 82 of the rotating device 22 and are secured in particular by the screw connection 83. This detachable arrangement of the coupling device 33 to the rotating device 22 also enables increased flexibility through the possible replacement of the coupling device 33 to the rotary drive 24 and the coupling 23.

[0043] By reducing the installation height of the attachment device 21, which can be achieved in particular by relocating the attachment bearing point 38 to the connection plane 65 or below it in the direction of the rotation plane 39, the kinematics of the boom 14 and the attachment device 21 are improved to the extent that a loading height and / or a breakout force can be increased. This is particularly the case when the attachment bearing point 38 is located in the rotation plane 39.

[0044] The attachment device 21 according to Figures 4 to 6 further has the advantage that the integration of the rotary drive 24 and the coupling 23 enables a reduction in the number of hydraulic connections for controlling a work device 25. For example, the number of connections in the coupling 23 can be reduced from five to three. Two of the connections serve a primary function, namely an inlet and a return line for the working fluid, in particular hydraulic oil. The third connection is provided for a so-called leakage oil. The connection or integration of the coupling 23 into the rotary drive 24 enables the hydraulic connections required for controlling the rotary drive to be provided within the rotary drive 24 and / or the coupling 23 and to be permanently connected to one another.

[0045] Figure 7 shows a perspective view of the handle 14 according to Figure 3 and the attachment device 21 according to Figure 4 which is articulated thereto. The fork-shaped connection 20 is provided between the pivoting kinematics 27 and the attachment device 21. The pivoting kinematics 27 comprises two deflectors 28, each positioned to an outer side of the handle section 51 and mounted in the deflector axis 29. Opposite each other, these deflectors 28 engage the pivot axis 35 of the pivoting kinematics 27. The coupling 31 of the pivoting kinematics 27 is fork-shaped. The coupling 31 has two coupling arms 64 pointing towards the attachment device 21. These coupling arms 64 preferably each engage an outer side of the cheek 36 of the coupling device 33. The respective ends of the coupling arms 64 are pivotally mounted at the coupling bearing point 37, preferably by a bolt. Opposite the coupling arms 64, the coupling 31 comprises, for example, a coupling rod 65.This coupling rod 65 is narrower in width than the distance between the two coupling arms 64. The coupling rod 65 can comprise a recess so that a piston rod of the pressure cylinder 16 can be positioned therebetween and engages the pivot axis 35.

[0046] The height HK of the coupling bearing point 37 and the mounting bearing point 38 of the coupling device 33 advantageously corresponds to the height HS of the offset stem section 51, which is formed by the distance between the mounting axis 17 and the deflector axis 29. The offset stem section 51 is positioned between the cheeks 36. The mounting axis 17 of the offset stem section 51 is aligned with the mounting bearing point 38, so that they are pivotally connected to each other by a bearing pin.

[0047] Figure 8 shows a schematic side view of the handle 14 with the attachment device 21 in a first pivoting or working position. Figure 9 shows the handle 14 with the attachment device 21 in a further pivoting or working position, different from the arrangement in Figure 7.

[0048] The handle 14 with the offset handle section 51 enables the attachment device 21 to be pivoted relative to the fictitious straight line 53 at a pivot angle A of up to 60° toward the underside 43 of the handle 14. Due to the offset mounting bearing point 38 relative to the coupling bearing point 37 and the offset handle section 51, the rotating device 22 can be positioned with respect to its rotation axis almost parallel or parallel to the fictitious straight line 52.

[0049] Figure 9 shows the further pivoting position of the attachment device 21 in the opposite direction to that in Figure 6. A pivoting angle B of up to 160° can be assumed relative to the imaginary straight line 53 through the deflector axis 29. This pivoting position can be assumed by the offset stem section 51. This results in a pivoting angle of up to 220° between the attachment device 21 and the offset stem section 51.

[0050] Figure 10 shows an alternative embodiment of the stem 14. The stem section 51 is not offset relative to the main stem section 50. Such a stem 14 is referred to as a straight stem. It is provided that an upper and / or lower side of the stem section 51 and the main stem section 50 lie in a common plane. Otherwise, the statements regarding the aforementioned stem 14 apply.

[0051] Figure 11 shows a perspective view of the handle 14 according to Figure 10 and the attachment device 21 according to Figure 4. The pivoting movement of the attachment device 21 relative to the handle 14 is controlled by a pivot kinematics 27, which corresponds to the embodiment according to Figure 7. A fork-shaped coupling 31 is used. Thus, this embodiment comprises a fork-shaped connection 20 between the pivot kinematics 27 and the attachment device 21.

[0052] Figure 12 shows an alternative embodiment of the handle 14 according to Figures 2 and 3. The handle 14 has a cranked handle section 51 relative to the main handle section 50. In contrast to the embodiment according to Figures 2 and 3, the cranked handle section 51 according to Figure 12 is fork-shaped. The cranked handle section 51 comprises two fork arms 61 that are spaced apart from one another. The deflector axis 29 and the attachment axis 17 are provided in each fork arm 61. Preferably, the distance between the fork arms 61 in the area where the deflector axis 29 is provided is smaller than in the section facing the free handle end 48, in which the attachment axis 17 is located. This has the advantage that the conditions for connecting the attachment device 21 to the handle 14 are analogous or the same as in the embodiment according to the handle in Figures 2 and 3 and in Figure 9.

[0053] Figure 13 shows a perspective view of the stem 14 according to Figure 12 with the attachment device 21 according to Figure 4 in a pivoted position. The fork-shaped connection 20 is formed between the stem 14 and the attachment device 21. In this embodiment, the pivoting kinematics 27 has a coupling 31, which is, for example, rod-shaped. Alternatively, it can also be provided that in this embodiment according to Figure 12, the coupling 31 can also be designed as a fork-shaped coupling 31 with two coupling arms 64. Preferably, the coupling 31 can be designed as a welded construction in which two rod-shaped sheets are connected to a web, preferably also made of sheet metal, wherein the rod-shaped sheets engage both the pivot axis 35 and the coupling bearing point 37. Alternatively, the welded construction can also be designed as a cast construction.

[0054] Figure 14 shows an alternative embodiment of the handle 15 to Figure 11. This embodiment differs from that in Figure 11 in that the handle section 51 is formed straight relative to the main handle section 50. A bend in the handle section 51 is not provided. Otherwise, the comments on Figure 12 apply.

[0055] Figure 15 shows a perspective view of the handle 14 shown in Figure 14 and the attachment device 21 shown in Figure 4 in a working position. In this embodiment, the pivoting kinematics 27 are designed analogously to that shown in Figure 12. Likewise, a fork-shaped coupling 31 can be provided as an alternative.

[0056] Figure 16 shows a schematic side view of the excavator 11 according to Figure 1 with an alternative embodiment of the working device 25. The working device 25 according to Figure 16 is, for example, a screed. By incorporating the screed on the attachment 21, the excavator 11 can be used as a so-called grader. Such graders, which are also called levelers, earth planers or road graders, enable the creation of large, flat surfaces in road construction, gardening, landscaping, or the like. By relocating the attachment bearing point 38 of the attachment 21 to an area between the connection plane 65 and the rotation plane 69 and / or to the slope 69 on the rotating device 22, it is possible for reduced leverage forces to act on the screed during the creation of a flat surface.Furthermore, there is only one interface between the boom 14 and the attachment 21, significantly reducing play or eliminating any play at all. The design of the attachment 21 with the rotary drive 22 also makes it possible for the screed bar to be aligned relative to the direction of travel, but parallel to the ground, so that operation as a grader can be achieved using the drive of the excavator 11.

Claims

Claims Attachment device for a stick (14) of an excavator (11), with a rotating device (22) which comprises a drive housing (66) with an upper, at least partially formed cover surface (67), with a rotary drive (24) by means of which a coupling (23) is rotatable relative to the drive housing (66) about a rotation axis (26), with a coupling device (33) which is arranged at least partially on the upper cover surface (67) of the drive housing (66), which coupling device comprises an attachment bearing point (38) for connection to the stick (14) and a coupling bearing point (37) for connection to a pivoting kinematics (27) arranged on the stick (14), characterized in that a rotation plane (39) is formed between the drive housing (66) and the coupling (23), that a fictitious connection plane (65) for the coupling device fixedly arranged thereon is formed by the at least partially formed cover surface (67) of the drive housing (66). (33) is formed,that the mounting point (38) of the coupling device (33) is arranged in the fictitious connection plane (65) or in the rotation plane (39) or between the fictitious connection plane (65) and the rotation plane (39), and, that the coupling bearing point of the coupling device (33) is positioned above the connection plane (65). Attachment device according to claim 1, characterized in that the coupling bearing point (37) of the coupling device (33) is positioned in a region above the rotary feedthrough (71) to the drive housing (66). Attachment device according to claim 1 or 2, characterized in that the coupling device (33) is provided in a rotationally fixed and / or non-pivotable manner on the connection plane (65) of the drive housing (66). Attachment device according to one of the preceding claims, characterized in that the coupling device is detachably provided on the fictitious connection plane (65), or that the coupling device is provided in one piece on the drive housing (66).Attachment device according to one of the preceding claims, characterized in that the coupling device (33) has two cheeks (36) which are detachably and preferably non-rotatably and / or non-pivotably provided on the at least partially formed cover surface (67) of the drive housing (66) or are formed integrally thereon. Attachment device according to claim 5, characterized in that the two cheeks (36) of the coupling device (33) are connected to one another by at least one connecting plate (34), and preferably the at least one connecting plate (34) is detachably connected to the rotating device (22), in particular by a screw connection (83). Attachment device according to one of the preceding claims, characterized in that the drive housing (66) is between. its cover surface (67) extending at least in sections and the end face (68) has at least one bevel (69). Attachment device according to claim 7, characterized in that the at least one bevel (69) is inclined at an angle of 15° to 75° relative to the cover surface (67) in the direction of the end face (68). Attachment device according to claim 7 or 8, characterized in that the at least one bevel (69) is shortened by a distance of the axis of the attachment bearing point (38) in the direction of the rotation axis (26) of the rotating device (22). Attachment device according to one of the preceding claims, characterized in that at least one connecting plate (34) is provided which is connected to the bevel (69) or bears against the bevel (69) and at least one further connecting plate (34) is provided which is connected to the cover surface (67).Attachment device according to one of the preceding claims, characterized in that the attachment bearing point (38) is assigned to the slope (69) or the end face (68). Attachment device according to one of the preceding claims, characterized in that the attachment bearing point (38) and the coupling bearing point (37) are arranged at an angle (ß) to a rotation plane (39) of the rotating device (22) or parallel to the rotation plane (39) of the rotating device (22), which angle is formed by two fictitious straight lines (56, 57), wherein one fictitious straight line (56) extends through the coupling bearing point (37) and the attachment bearing point (38) and the other fictitious straight line (57) lies in the rotation plane (39) or runs parallel thereto and extends through the attachment bearing point (38). Attachment device according to claim 12, characterized in that the fictitious straight lines (56, 57) are arranged at an angle (ß) of 15° to 45°, preferably 25° to 35°. Attachment device according to one of the preceding claims, characterized in that a rotary feedthrough (71) is arranged in the drive housing (66), which has a stator (74) fixed in rotation to the drive housing (66) and a rotor (78) rotatable relative to the stator (74), which rotor is connected to the coupling (23) and which is connected to at least one connection, preferably three connections, in the coupling (23).

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