Connecting part for a coupling device

Abstract

Connecting part (1) for a coupling device comprising a connecting part (1) and a coupling part (2), wherein the coupling device enables a detachable connection between a crane arm (3) and a work device (4), with - first fastening means (5) for attaching the connecting part (1) to a crane arm (3) or a work device (4), - an upper bearing device (6) in the mounting position for an upper stop (7) of the coupling part (2), - a lower bearing device (8) in the mounting position, spaced a first distance apart therefrom, for a lower stop (9) of the coupling part (2), and - a locking device (10, 11, 12) which prevents an unintentional loosening of a connection between the connecting part (1) and the coupling part (2), wherein the locking device (10, 11,12) has a locking stop (10) mounted on the connecting part (1) for at least one locking bolt (12) that can be mounted in a bearing device (11) in the coupling part (2), wherein the connecting part (1) has an adjusting device with which the locking stop (10) is adjustable relative to the bearing device (6) in the upper mounting position.

Description

[0001] The invention relates to a connecting part for a coupling device according to the preamble of claim 1, a coupling device with such a connecting part and a coupling part, a crane with such a coupling device, a vehicle with such a crane and a method for coupling a coupling device.

[0002] In the prior art, coupling devices with a connecting part and a coupling part for attaching a work tool to a crane arm are known, in which a connection between the work tool and the crane arm is made by means of bolts engaging in fork-shaped receptacles. The fork-shaped receptacles and the bolts that can be inserted therein can be formed on attachments of the work tool and the crane arm, such as a connecting part and a coupling part. The connection can be locked by an additional bolt. The attachments of the work tool and the crane arm can have openings for a bolt used for locking.

[0003] Since the fork-shaped receptacles and the bolts that can be inserted into them for the attachments of the work equipment and the crane arm are subject to manufacturing tolerances, wear, and deformation, a sufficiently large clearance for movement must be provided for the locking bolt, for example, by a sufficiently undersized bolt and / or a sufficiently oversized opening. This sufficient clearance between the openings and the bolt allows the connection to be locked by an additional bolting mechanism, even with attachments known in the prior art, despite manufacturing tolerances, wear, and deformation.

[0004] Such play between the openings and the bolt adversely affects the connection between the work tool and the crane arm, because in a connected and locked state of such a coupling device, relative movement between the attachments of the work tool and the crane arm is possible. This relative movement between the attachments of the work tool and the crane arm can essentially occur within the range of motion provided by the play between the openings and the bolt. This can adversely lead to peak loads on the connection between the work tool and the crane arm, increased wear and deformation of the connection, undesirable noise during work operations with the work tool, and, fundamentally, undesirable movement between the work tool and the crane arm.

[0005] The object of the invention is to provide a connecting element for a coupling device comprising a connecting element and a coupling element, in which the aforementioned disadvantages do not occur. Furthermore, a coupling device comprising such a connecting element and a coupling element, a crane comprising such a coupling device, a vehicle comprising such a crane, and a method for coupling such a coupling device are to be provided, all of which do not exhibit the aforementioned disadvantages.

[0006] This problem is solved by a connecting part for a coupling device comprising a connecting part and a coupling part having the features of claim 1, as well as a coupling device comprising such a connecting part and a coupling part, a crane comprising such a coupling device, a vehicle comprising such a crane and a method for coupling such a coupling device.

[0007] Advantageous embodiments of the invention are defined in the dependent claims.

[0008] The connecting piece is fundamentally suitable for a coupling device with a connecting part and a coupling part. The coupling device allows a work tool to be detachably connected to a crane arm of a lifting device. A work tool coupled to a crane arm of a lifting device via the coupling device can be moved together with the crane arm.

[0009] The connecting part has primary fastening means for attachment to a crane arm or work equipment. This attachment can be achieved, for example, by means of screws or bolts. A coupling part, which can form a corresponding counterpart to the connecting part, can be attached to the work equipment or crane arm and may have corresponding secondary fastening means.

[0010] The connecting part has an upper bearing device in the assembly position for an upper stop of the coupling part and a lower bearing device in the assembly position, spaced apart from it by a first distance, for a lower stop of the coupling part.

[0011] A mounting position can result, for example, from the usability of the work equipment and / or lifting device. A lifting device with a crane arm is usually supported on a surface and thus aligned along a direction of gravity, allowing relative information about the position of a stop or bearing to be assigned to positions in space. For a work tool, a mounting position can be determined by an orientation suitable for use in relation to a direction of gravity, again allowing relative information about the position of a stop or bearing to be assigned to positions in space. For example, a work tool in the form of a work platform, mulcher, mower, milling machine, winch, sling, or extension may, by design, have an orientation suitable for use in relation to a direction of gravity.

[0012] The connecting part has a locking device that prevents unintentional disconnection of the connection between the connecting part and the coupling part. In particular, the locking device prevents unintentional disconnection of the connection between the lower stop of the coupling part and the lower bearing device of the connecting part. The locking device can limit and / or lock relative movement between the coupling part and the connecting part.

[0013] The locking device has a locking stop mounted on the connecting part for at least one locking bolt that can be stored in a bearing device in the coupling part, wherein the connecting part has an adjusting device with which the locking stop can be adjusted relative to the upper bearing device of the connecting part in the mounting position.

[0014] The locking stop allows the relative movement of the connecting part relative to at least one locking bolt that can be stored in the coupling part to be limited and / or locked in at least one spatial direction.

[0015] Because the locking stop is adjustable relative to the upper bearing device in the mounting position by the adjusting device, the position of the locking stop relative to the upper bearing device in the mounting position and consequently in a coupled state of the coupling part with the connecting part relative to the coupling part and the stops of the coupling part can be adjusted.

[0016] The adjusting device allows the position of the locking stop relative to the bearing device for the locking bolt and / or the locking bolt to be adjusted.

[0017] Because the locking stop is adjustable via the adjusting device, the need for an undersized locking bolt and / or an oversized bearing for the locking bolt can be eliminated.

[0018] The adjustment device advantageously allows the position of the locking stop to be adjusted so that the locking bolt can be inserted into the locking device and an unintentional loosening of the connection between the connecting part and the coupling part can be prevented.

[0019] The locking stop can be adjusted within a limited adjustment range relative to the upper bearing device in the mounting position.

[0020] Advantageously, the adjustment device allows the distance between the locking stop and the upper bearing assembly to be adjusted. This enables the position of the locking stop to be set essentially independently of the position of the upper bearing assembly, if necessary within an adjustment range of the locking stop.

[0021] The locking stop can be pivotally mounted on the connecting piece. The adjustment mechanism allows the locking stop to be pivoted relative to the upper bearing assembly. Advantageously, the locking stop can be pivotally mounted eccentrically on the connecting piece. The locking stop can also be pivotally mounted on the connecting piece at a predetermined distance from a pivot axis.

[0022] In an advantageous embodiment, the adjusting device can have an adjustable support for resting against a lower stop of the coupling part. An adjustable support can be in the form of an adjusting screw.

[0023] The locking stop can be pivotably mounted, preferably eccentrically, on the connecting part, with the adjustable support allowing the locking stop to pivot relative to the upper bearing assembly. The locking stop can be pivotally mounted via a shaft on which it is mounted and pivotally attached to the connecting part. In particular, when the coupling part is coupled to the connecting part, the locking stop can pivot relative to the upper bearing assembly using the adjustable support. The adjustable support can then abut the coupling part and define a pivot position for the locking stop.

[0024] The adjustable support can be adjusted relative to the upper bearing device of the connecting part.

[0025] The lower bearing device in the mounting position and the locking stop can advantageously be designed on a common rotary lever, whereby the rotary lever can be pivotably mounted on the connecting part.

[0026] The rotary lever can be designed with two arms, which may form an angle with each other. In such a design, the rotary lever can be configured as a two-sided lever. A lever arm can be understood as a section of the rotary lever that extends from the pivot axis of the rotary lever to a respective reference point for a force acting on the rotary lever, such as the support or the locking stop of the rotary lever. In particular, the two lever arms can be arranged substantially at right angles to each other. The lever arms can be pivotally mounted on the connecting part about a common pivot axis.

[0027] The locking stop can be arranged on a first lever arm of the rotary lever. The lower bearing device can be arranged on a second lever arm of the rotary lever.

[0028] The adjustable support can be arranged on the rotary lever. In a version of the rotary lever with two lever arms, the adjustable support can be arranged on one of the two lever arms. The adjustable support can be designed as an adjusting screw mounted in a thread in one of the lever arms.

[0029] The locking stop can advantageously have a recess for at least partially enclosing the at least one locking bolt that can be stored in the coupling part. By at least partially enclosing the at least one locking bolt that can be stored in the coupling part, the locking stop can limit and / or lock relative movement of the connecting part relative to the at least one locking bolt that can be stored in the coupling part in at least one spatial direction.

[0030] The locking stop may have a tapered tip to facilitate insertion into the coupling part, particularly between bearing plates of a bearing device for the locking bolt.

[0031] The upper bearing device of the connecting part can be designed in the form of at least one hook-shaped projection. Advantageously, the at least one hook-shaped projection can have a tapered tip.

[0032] The lower bearing device of the connecting part can be designed in the form of a bearing surface. The bearing surface can be flat, curved, or angled.

[0033] In a design where the locking stop is pivotally mounted on the connecting piece, the pivoting movement can be driven by a power storage device. Advantageously, a force from the power storage device can be transmitted to the pivoting locking stop via a linkage with a dead-center mechanism. In particular, a force from the power storage device can be transmitted via a linkage with a dead-center mechanism to the shaft on which the locking stop is arranged.

[0034] The locking stop can be movable at least between a park position and a coupling position remote from it, with the dead-center mechanism optionally holding the pivotable locking stop in one of the positions. In a park position, the locking stop can be protected within an interior area of ​​the connecting part. In a coupling position, the locking stop can be positioned so that it can engage with a locking bolt.

[0035] The locking stop can be moved by a user, for example, by means of a handle arranged on a shaft designed for pivoting. A handle can be arranged on both sides of the shaft or on one side only.

[0036] In an advantageous embodiment, force from the energy storage device can be transmitted to the shaft via a linkage located at a first end of the shaft, incorporating a dead-center mechanism. A handle for manually moving the locking stop by a user can be located at a second, opposite end of the shaft.

[0037] A coupling device for creating a detachable connection between a crane arm and a work attachment can comprise a connecting part as described above and a coupling part. The coupling part can be attached to a work attachment or to a crane arm using secondary fastening means. Fastening can be achieved, for example, by means of screws or bolts.

[0038] The coupling part can have an upper stop in the mounting position for the upper bearing device of the connecting part and a lower stop in the mounting position, spaced apart from it by a second distance, for the lower bearing device of the connecting part.

[0039] In a coupled state of the coupling part with the connecting part, the upper stop of the coupling part can be in contact with the upper bearing device of the connecting part and the lower stop of the coupling part can be in contact with the lower bearing device of the connecting part.

[0040] Generally, the connecting part can be attached to or attachable to the work equipment, and the coupling part can be attached to or attachable to the crane arm. Likewise, the coupling part can be attached to or attachable to the work equipment, and the connecting part can be attached to or attachable to the crane arm.

[0041] A connection between a stop of the coupling part and a bearing device of the connecting part can be designed to be positively locking and / or force-locking.

[0042] For example, in a coupled state, the upper stop of the coupling part and the upper bearing device of the connecting part can be positively and / or frictionally connected to each other. The lower stop of the coupling part can be positively and / or frictionally connected to the lower bearing device of the connecting part.

[0043] The locking device can have a bearing assembly for the at least one locking bolt on the coupling part, spaced a third distance from the upper stop of the coupling part. The bearing assembly can preferably be arranged below the lower stop in the mounting position. The bearing assembly can preferably be designed in the form of receiving openings in the coupling part for the locking bolt.

[0044] The adjustment device advantageously allows the position of the locking stop relative to the bearing device for the at least one locking bolt to be adjusted. In particular, when the coupling part is coupled to the connecting part, the position of the locking stop relative to the bearing device for the at least one locking bolt can be adjusted so that the locking bolt can be inserted into the locking device and an unintentional loosening of the connection between the connecting part and the coupling part can be prevented.

[0045] The adjusting device generally allows the position of the locking stop to be adapted to different distances of the bearing devices for the stops, to different distances of the stops, and to different positions of the bearing device for the locking bolt relative to the bearing devices for the stops and to the stops.

[0046] Advantageously, the adjustment device allows the distance of the locking stop to the upper bearing device in the mounting position to be adapted to the third distance between the bearing device for the at least one locking bolt and the upper stop.

[0047] The upper stop of the coupling element can advantageously be designed in the form of at least one bolt-shaped stop, upon which, for example, shear and / or tensile forces can act in a radial direction. If the upper bearing device of the connecting element is designed in the form of at least one hook-shaped projection, the hook-shaped projection can engage behind the bolt-shaped stop.

[0048] The lower stop of the coupling part can be designed in the form of at least one console, for example in the form of a flat section or a flat part of the coupling part on which support forces can act.

[0049] The at least one bolt-shaped stop can be mounted on plates projecting from the coupling part, wherein the plates can be tapered at their upper end (in the assembled position) to form a funnel-shaped insertion aid for the upper bearing device of the coupling part. Plates projecting from the coupling part can be understood as plate-shaped sections that are arranged on or formed from a base body of the coupling part. If the upper bearing device of the coupling part is designed in the form of at least one hook-shaped, tapered projection, the insertion of the bolt-shaped stop into the upper bearing device of the coupling part can be simplified.

[0050] A lower stop in the form of a console can be arranged between plates projecting from the coupling part or be formed by them.

[0051] Plates protruding from the coupling part can absorb forces acting on the coupling part in addition to the upper stop of the coupling part, especially moment loads such as torques.

[0052] The coupling element can have a bearing device for the at least one locking bolt, wherein the bearing device can be formed on bearing plates projecting from the coupling element. The bearing plates can be tapered to form a funnel-shaped insertion aid for the locking stop mounted on the coupling element. If the locking stop of the coupling element is designed in the form of at least one hook-shaped, tapered projection, the insertion of the bolt-shaped stop into the upper bearing device of the coupling element can be simplified.

[0053] Plates protruding from the coupling part can absorb forces acting on the coupling part in addition to the upper stop of the coupling part, especially moment loads such as torques.

[0054] Protection is also sought for a crane with a crane arm and a coupling device attached to it, as described above.

[0055] Furthermore, protection is sought for a vehicle with such a crane, having a crane arm and a coupling device attached to it as described above.

[0056] Protection is also sought for a method of coupling and decoupling a coupling device with a connecting part and a coupling part using a coupling device as described above. Such a method allows for the creation and release of a connection between a coupling part and a connecting part as described above.

[0057] Further details and advantages of the present invention are explained in more detail below with reference to the exemplary embodiments shown in the drawings, as described in the figures. These show: Figs. 1a and 1b are perspective views of an embodiment of a connecting part; Figs. 2a and 2b are perspective views of an embodiment of a coupling part and an embodiment of a connecting part; Fig. 3 is a perspective view of a coupling device with a connecting part and a coupling part; Figs. 4a to 4c are sectional views of a connecting part attached to a coupling part with different height offsets; Figs. 5a to 5j are sectional views of a process for manufacturing a connection between a coupling part and a connecting part; Figs. 6a to 6c are side views of a process for releasing a connection between a coupling part and a connecting part; Figs. 7a and 7b are views of a working device attached to a coupling device with a connecting part and a coupling part; and Fig. 8 is a perspective view of a connecting part and a coupling part with a lateral offset from each other.Figs. 9a to 9d: Perspective views of different designs of a coupling part and a connecting part. Fig. 10: A view of a work device attached to a coupling device with a connecting part and a coupling part. Figs. 11a to 11c: Views of a work device attached to a coupling device with a connecting part and a coupling part. Fig. 12: A view of a work device attached to a coupling device with a connecting part and a coupling part. Figs. 13a and 13b: Views of a work device attached to a coupling device with a connecting part and a coupling part. Fig. 14: A view of a work device attached to a coupling device with a connecting part and a coupling part. Fig. 15: A crane with a crane arm and a coupling device arranged thereon. Fig. 16: A vehicle with a crane, a crane arm, and a coupling device arranged thereon.

[0058] In the Figures 1a and 1bFigures 9a and 9b show perspective views of the design of a connecting part 1. Figures 2a and 2b Figures 9c and 9d show perspective views of embodiments of a coupling part 2 and embodiments of a connecting part 1, wherein these form a coupling device for creating a detachable connection between a crane arm 3 and a work device 4 (see also Figure 9c). Fig. 7a and 7b , 10 , 11a to 11c , 12 , 13a and 13b , 14 ) can train. In Figure 3 A perspective view of a coupling device with a connecting part 1 and a coupling part 2 is shown. Figures 4a to 4c The diagrams show sectional views of a connecting part 1 connected to a coupling part 2, with different height offsets relative to each other. Figures 5a to 5j The figures show a sequence of sectional views illustrating the creation of a connection between a coupling part 2 and a connecting part 1. Figures 6a to 6cThe diagram shows side views of the process of releasing a connection between a coupling part 2 and a connecting part 1. Figures 7a and 7b Views of a working device 4 attached to a coupling device with a connecting part 1 and a coupling part 2 are shown. Figure 8 shows a perspective view of a connecting part 1 and a coupling part 2 with a lateral offset to each other.

[0059] The Figures 1a and 1b show an embodiment of a connecting part 1 for, for example, a Figure 3 The illustrated coupling device consists of a connecting part 1 and a coupling part 2. Perspective views of a connecting part 1 and a coupling part 2 are shown in the Figures 2a and 2b shown. Figures 9a and 9bFigure 1 shows another embodiment of a connecting part 1 for a coupling device with a connecting part 1 and a coupling part 2. Corresponding further perspective views of a connecting part 1 and a coupling part 2 are shown in the Figures 9c and 9d shown

[0060] The coupling device is similar to those used in the Figures 7a and 7b , 10 , 11a to 11c , 12 , 13a and 13b , 14 The illustration shows a detachable connection between a crane arm 3 and different versions of a work device 4.

[0061] In the illustrated embodiment, the connecting part 1 has first fastening means 5 for attaching the connecting part 1 to a crane arm 3 or a work device 4. Furthermore, the connecting part 1 has an upper bearing device 6, in the installed position, for an upper stop 7 of the coupling part 2. In the illustrated embodiments, the upper bearing device 6 of the connecting part 1 is designed in the form of a hook-shaped projection 19. The connecting part has a lower bearing device 8, in the installed position, for a lower stop 9 of the coupling part 2, spaced a first distance from the upper bearing device 6.

[0062] The at least one hook-shaped projection 19 can have a tapered tip 20, which can simplify connection with the upper stop 7.

[0063] To prevent unintentional loosening of the connection between the connecting part 1 and the coupling part 2, a locking device is provided. In the embodiment shown, the locking device has a locking stop 10 mounted on the connecting part 1, which can interact with a locking bolt 12 that can be mounted in a bearing device 11 in the coupling part 2.

[0064] As described in the section on coupling part 2 in the Figures 9c and 9d As shown, the locking bolt 12, which can be stored in a storage device 11, can be inserted from different sides of the coupling part.

[0065] The lower bearing device 8 in the assembly position and the locking stop 10 are formed on a common rotary lever 14, wherein the rotary lever 14 is pivotably mounted on the connecting part 1 about an axis of rotation d, in particular pivotably as shown. The rotary lever 14 can be arranged on a shaft 32 rotatably mounted in the connecting part 1.

[0066] The rotary lever 14 can advantageously be designed with two arms, 15 and 16, wherein the lever arms 15 and 16 can form an angle with each other. An illustration of the lever arms 15 and 16 is shown in Figure 4aThe lever arms 15, 16 can essentially correspond to a section of the rotary lever 14, extending from the pivot axis d of the rotary lever 14 to a respective reference point for an acting force, such as the support 13 or the locking stop 10. In particular, the two lever arms 15, 16 can be arranged essentially at right angles to each other as shown and form a knee 17. The lever arms 15, 16 can be pivotably mounted on the connecting part 1 about a common axis of rotation d.

[0067] The locking stop 10 can be arranged or formed on a first lever arm 15 of the rotary lever 14. The locking stop 10 can have a tapered tip 28 to facilitate insertion into the coupling part 2.

[0068] The lower bearing device 8 can be arranged or formed on a second lever arm 16 of the rotary lever 14. As shown, the lower bearing device 8 can be formed in a bend 17 of the rotary lever 14 to form a bearing surface 29. This is also specifically shown in the Figures 9a and 9b shown.

[0069] The locking stop 10 has a recess 18 for at least partially enclosing the at least one locking bolt 12 which can be stored in the coupling part 2.

[0070] Furthermore, the connecting part 1 has an adjustment device with which the locking stop 10 can be adjusted relative to the upper bearing device 6 in the mounting position. Different settings of the adjustment device are, for example, in the Figures 4a to 4c shown.

[0071] The adjusting device allows, in particular, the distance between the locking stop 10 and the upper bearing device 6 in the mounting position to be adjusted.

[0072] In the embodiment shown, the distance is adjustable by different pivot positions of the locking stop 10. The locking stop 10 can be pivotally mounted on the connecting part 1, in particular eccentrically pivotable as shown. The adjusting device allows the pivot position of the locking stop 10 relative to the upper bearing assembly 6 to be adjusted.

[0073] The adjusting device can have an adjustable support 13 for adjusting the pivot position of the locking stop 10, which is suitable for resting on a lower stop 9 of the coupling part 2.

[0074] The adjustable support 13 can be arranged on a second lever arm 16 of the rotary lever 14 as shown. The adjustable support 13 can be designed in the form of an adjusting screw.

[0075] As in Figure 1bAs shown, the pivoting movement of the locking stop 10, which is pivotably mounted on the connecting part 1 via the shaft 32 and formed on the first lever arm 15 of the rotary lever 14, can be driven by a force storage device 30, for example a gas spring. A force from the force storage device 30 can be transmitted to the shaft 32 via a linkage 31 with a dead-center mechanism. The locking stop 10 can be locked at least between a park position (see figure). Figure 5a ) and a coupling position further away from it (see Figure 5f) be movable, wherein the dead-point mechanism can selectively hold the pivotable locking stop 10 in one of the positions. In a parked position, the locking stop 10 can be protected in an interior area of ​​the connecting part 1. In a coupled position, the locking stop 10 can be arranged in a position in which it can engage a locking bolt 12. The locking stop 10 can be moved by a user, for example, by means of a handle 33 arranged on the shaft 32. A handle 33 can be, as shown in the Figures 1a and 1b shown, arranged on both sides of shaft 32, or as shown in the Figures 6a , 8, as shown in Figures 9a and 9b, are arranged on one side of the shaft 32. With a one-sided arrangement of the handle 33, a force from the energy storage device 30 can be transmitted to the shaft 32 via a linkage 31 arranged at a first end of the shaft 32 with a dead-center mechanism, and a handle 33 for manually moving the locking stop 10 by a user can be arranged at an opposite second end of the shaft 32.

[0076] The in Figure 2a The coupling part 2 shown can be attached to a work device 4 or to a crane arm 3 using second fastening means 21. In the embodiment shown, the coupling part 2 has an upper stop 7 for the connecting part 1 in the mounted position and a lower stop 9 for the connecting part 1, spaced apart from the upper stop 7 in the mounted position.

[0077] In Figure 3A perspective view of an arrangement with a connecting part 1 and a coupling part 2 is shown, which together can form a coupling device for creating a detachable connection between a crane arm 3 and a working device 4.

[0078] In a situation such as in the Figures 4a to 4c , 5i and 5j and 7a and 7b In the coupled state of the coupling device shown, with a coupling part 2 and a connecting part 1, the upper stop 7 of the coupling part 2 is in contact with the upper bearing device 6 of the connecting part 1 and the lower stop 9 of the coupling part 2 is in contact with the lower bearing device 8 of the connecting part 1.

[0079] The upper stop 7 of the coupling part 2 can be designed in the form of at least one bolt-shaped stop 22, on which, for example, shear forces and / or tensile forces can act in a radial direction. If the upper bearing device 6 of the connecting part 1 is designed in the form of the hook-shaped projection 19, this can engage behind the bolt-shaped stop 22.

[0080] The lower stop 9 of the coupling part 2 can be designed in the form of at least one console 23, on which, for example, support forces can act.

[0081] The locking device has on the coupling part 2 a bearing device 11 for the at least one locking bolt 12, spaced at a distance x3 from the upper stop 7 of the coupling part 2 and preferably arranged below the lower stop 9 as shown in the mounting position. The bearing device 11 can be designed in the form of receiving openings.

[0082] By means of the adjusting device, with which the locking stop 10 is adjustable relative to the upper bearing device 6 in the mounting position, the distance of the locking stop 10 to the upper bearing device 6 in the mounting position can be adapted to the third distance x3 between the bearing device 11 for the at least one locking bolt 12 and the upper stop 6.

[0083] The at least one bolt-shaped stop 22 can, as in Figure 2aThe upper bearing device 6 of the connecting part 1, formed by a hook-shaped projection 19 with a tapered tip 20, is mounted on plates 24 projecting from the coupling part 2. The plates 24 can be tapered at an upper end 25 in the assembly position to form a funnel-shaped insertion aid for the upper bearing device 6 of the connecting part 1. This allows the upper bearing device 6 of the connecting part 1, formed by a hook-shaped projection 19 with a tapered tip 20, to be inserted between the plates 24, which have a tapered end 25 and the bolt-shaped stop 22, despite a certain lateral offset (see [reference]). Figure 8 ) and / or an axial rotation (see below) Figures 7a and 7b ) between connecting part 1 and coupling part 2.

[0084] Similarly, the coupling part 2 can have a bearing device 11 for the at least one locking bolt 12, wherein the bearing device 11 can be formed on bearing plates 26 projecting from the coupling part. The bearing plates 26 can be tapered at one end 27 to form a funnel-shaped insertion aid for the locking stop 10 mounted on the connecting part 1. The function of such an insertion aid is described in Figure 8 Illustrated. The insertion of the locking stop 10 of the connecting part 1, formed on the rotary lever 14 with a tapered tip 28, between the bearing plates 26 having a tapered end 27 can take place despite a lateral offset between the connecting part 1 and the coupling part 2.

[0085] The adjusting device generally allows the position of the locking stop 10 to be adapted to different distances of the bearing devices 6, 8 for the stops 7, 9, to different distances of the stops 7, 9, and to different positions of the bearing device 11 for the locking bolt 12 relative to the bearing devices 6, 8 for the stops 7, 9 and to the stops 7, 9.

[0086] This adaptability is in the Figures 4a to 4c Illustrated by way of example using the third distance x3 between the bearing device 11 for the at least one locking bolt 12 and the upper stop 6 of the coupling part 2.

[0087] The Figures 4a to 4c The diagrams therefore show sectional views of a connecting part 1 connected to a coupling part 2 with different height offsets to each other.

[0088] In Figure 4aThe third distance x3 between the bearing device 11 for the at least one locking bolt 12 and the upper stop 6 has a first value.

[0089] In Figure 4b The third distance x3 between the bearing device 11 for the at least one locking bolt 12 and the upper stop 6 has a second, smaller value, since the second distance of the upper stop 7 to the lower stop 9 of the coupling part 2 has a smaller value. A larger value of the first distance of the upper bearing device 6 to the lower bearing device 8 of the connecting part 1 can have an analogous effect.

[0090] In Figure 4cThe third distance x3 between the bearing device 11 for the at least one locking bolt 12 and the upper stop 6 has a third, larger value, since the second distance of the upper stop 7 to the lower stop 9 of the coupling part 2 has a larger value. A smaller value for the first distance of the upper bearing device 6 to the lower bearing device 8 of the connecting part 1 can have an analogous effect.

[0091] The differing distances are highlighted by a dashed line drawn for reference.

[0092] Since the locking stop 10 is adjustable relative to the upper bearing device 6 in the mounting position by the adjusting device, the position of the locking stop 10 relative to the upper bearing device 6 in the mounting position, and consequently in a coupled state of the coupling part 2 with the connecting part 1, can be adjusted relative to the coupling part 2. Thus, the position of the locking stop 10 relative to the bearing device 11 for the locking bolt 12 and / or the locking bolt 12 can be adjusted by the adjusting device.

[0093] The locking stop 10, which is pivotably mounted on the connecting part 1, can, in the embodiment shown, be adjusted together with the adjustable support 13 and the rotary lever 14 into different pivot positions relative to the upper bearing device 6.

[0094] In Figure 4aThe adjustable support 13 is in a first position. In this pivoted position of the locking stop 10, the locking bolt 12 can be inserted into the locking device.

[0095] In Figure 4b The adjustable support 13 is in a second position, whereby the rotary lever 14 together with the locking stop 10 is in a position opposite to the position in Figure 4a has pivoted. In this pivot position of the locking stop 10, adapted to the differing, smaller distance x3, the locking bolt 12 can be inserted into the locking device.

[0096] In Figure 4c The adjustable support 13 is in a third position, whereby the rotary lever 14 together with the locking stop 10 is in a position opposite to the position in Figure 4aThe locking bolt 12 can also be inserted into the locking device in this pivoted position of the locking stop 10, which is adapted to the different, larger distance x3.

[0097] The Figures 5a to 5j The figures show a sequence of sectional views illustrating the creation of a connection between a coupling part 2 and a connecting part 1, as described previously. The figures subsequently show... Figures 6a to 6c Side views of a sequence for releasing such a connection. The sequences can correspond to a method for coupling and uncoupling a coupling device with a connecting part 1 and a coupling part 2 using a suitable coupling device.

[0098] In Figure 5aThe rotary lever 14, and thus the locking stop 10, is in a parked position. The connecting part 1 and the coupling part 2 can be moved towards each other, for example by moving the coupling part 2 with a crane arm 3. The locking stop 10 can remain protected in the parked position during this process.

[0099] As in Figure 5b As shown, the upper bearing device 6 can be hooked onto the upper stop 7.

[0100] Following this, coupling part 2 can be used as in Figure 5c shown relative to the connecting part 2 to pivot the connection of the upper bearing device 6 with the upper stop 7 and the rotary lever 14 as shown in the sequence of Figures 5d to 5f shown from the parking position into a position like in Figure 5f The coupling position shown can be brought into place. This can be done, for example, by a user by operating the previously described handle 33, possibly supported by the dead-point mechanism.

[0101] In another case, as in Figure 5g By pivoting the coupling part 2 relative to the connecting part 2 as shown, around the connection of the upper bearing device 6 with the upper stop 7, the adjustable support 13 of the adjusting device can come into contact with the lower stop 9 of the coupling part 2.

[0102] In the case of a continued, as in Figure 5h By pivoting the coupling part 2 relative to the connecting part 2 around the connection of the upper bearing device 6 with the upper stop 7, the rotary lever 14 can be pivoted by the continuous contact of the adjustable support 13 on the lower stop 9 of the coupling part, if necessary supported by the dead center mechanism.

[0103] The pivoting lever 14 can be rotated until the lower stop 9 and the lower bearing device 8 are in contact, as shown in Figure 5iAs shown. When pivoting, with a correspondingly selected setting of the adjustable support 13 of the adjusting device, the locking stop 10 can be brought into a pivot position in which the locking bolt 12 can be inserted into the locking device.

[0104] The locking bolt 12 allows, as finally described in Figure 5j As shown, an unintentional loosening of the connection between the lower stop 9 of the coupling part 2 and the lower bearing device 8 of the connecting part 1 is prevented. The locking stop 10, which interacts positively with the locking bolt 12, allows the relative movement of the connecting part 1 relative to the coupling part 2 to be limited and / or locked.

[0105] The Figures 6a to 6c show side views of the process of breaking such a connection.

[0106] After removing the locking bolt 12, proceed as described in Figure 6aThe diagram shows a pivoting of the coupling part 2 relative to the connecting part 1 to connect the upper bearing device 6 with the upper stop 7. The rotary lever 14 can be moved as shown in the sequence of the Figures 6b to 6c The lever 14 can be returned to its park position. This can be done, for example, by a user by operating the previously described handle 33. The pivoting of the rotary lever 14 into the park position can also be done automatically by the dead-center mechanism, driven by the energy storage unit 30.

[0107] In the Figures 7a and 7b The figures show views of a coupling device with a connecting part 1 and a coupling part 2 and a working device 4 attached thereto, wherein the connecting part 1 and the coupling part 2 are axially rotated relative to each other. The tapered tip 20 of the hook-shaped projection 19 of the upper bearing device 6 of the connecting part 1 (see also Figure 3) coupling of connecting part 1 and coupling part 2 can take place despite the axial rotation.

[0108] The Figures 10 , 11a to 11c , 12 , 13a and 13b , 14 show views of coupling devices with a coupling part 2 mounted on a crane arm 4 with second fastening means 21 and a connecting part 1, on which different versions of a working device 4 are mounted on fastening means 5.

[0109] In Figure 10 The working device 4 is designed in the form of a branch saw attached to the fastening means 5 of the connecting part 1.

[0110] In the Figures 11a to 11cThe working device 4 is designed in the form of a work basket attached to the fastening means 5 of the connecting part 1. The working device 4 additionally has a two-axis movement device 34 by means of which the working device 4 can be moved and positioned relative to the connecting part 1. The design of the working device 4 as a work basket corresponds to that of the Figures 7a and 7b in Figure 7a and 7b .

[0111] In Figure 12 The working device 4 is designed in the form of a mulcher attached to the fastening means 5 of the connecting part 1.

[0112] In the Figures 13a and 13b The working device 4 is designed in the form of a crane arm extension attached to the fastening means 5 of the connecting part 1.

[0113] Figure 14 The working device 4 is designed in the form of a winch attached to the fastening means 5 of the connecting part 1.

[0114] Figure 15Figure 1 shows a crane 40 with at least one crane arm 3, wherein a coupling device with a connecting part 1 and a coupling part 2 is arranged on the at least one crane arm 3.

[0115] Figure 16 Figure 1 shows a vehicle 41 with a crane 40 arranged on the vehicle frame, on at least one crane arm 3 of which a coupling device with a connecting part 1 and a coupling part 2 is arranged. Reference symbol list:

[0116] 1 Connecting part 2 Coupling part 3 Crane arm 4 Working device 5 First fastening device 6 Upper bearing device 7 Upper stop 8 Lower bearing device 9 Lower stop 10 Locking stop 11 Bearing device 12 Locking bolt 13 Support 14 Swivel lever 15 Lever arm 16 Lever arm 17 Knee 18 Recess 19 Hook-shaped projection 20 Tip 21 Second fastening device 22 Bolt-shaped stop 23 Console 24 Plate 25 Upper end 26 Bearing plate 27 End 28 Tip 29 Bearing surface 30 Energy storage device 31 Linkage 32 Shaft 33 Handle 34 Movement device 40 Crane 41 Vehicle d axis of rotation x3 third distance

Claims

1. Connecting part (1) for a coupling device comprising a connecting part (1) and a coupling part (2), wherein the coupling device enables a detachable connection between a crane arm (3) and a work device (4), with - first fastening means (5) for attaching the connecting part (1) to a crane arm (3) or a work device (4), - an upper bearing device (6) in the mounting position for an upper stop (7) of the coupling part (2), - a lower bearing device (8) in the mounting position, spaced a first distance apart from the upper bearing device (8) for a lower stop (9) of the coupling part (2), and - a locking device (10, 11, 12) which prevents an unintentional loosening of a connection between the connecting part (1) and the coupling part (2). characterized by the fact thatthe locking device (10, 11, 12) has a locking stop (10) mounted on the connecting part (1) for at least one locking bolt (12) which can be stored in a bearing device (11) in the coupling part (2), wherein the connecting part (1) has an adjusting device with which the locking stop (10) is adjustable relative to the bearing device (6) in the upper mounting position.

2. Connecting part for a coupling device according to the preceding claim, wherein the distance of the locking stop (10) to the upper bearing device (6) in the mounting position can be adjusted by means of the adjusting device.

3. Connecting part for a coupling device according to one of the preceding claims, wherein the locking stop (10) is pivotably, preferably eccentrically pivotable, mounted on the connecting part (1) and a pivoting position of the locking stop (10) relative to the upper bearing device (6) can be adjusted with the adjusting device.

4. Connecting part for a coupling device according to one of the preceding claims, wherein the adjusting device has an adjustable support (13) for resting on a lower stop (9) of the coupling part (2), wherein the locking stop (10) is pivotably, preferably eccentrically pivotable, mounted on the connecting part (1) and the adjustable support (13) allows a pivot position of the locking stop (1) relative to the upper bearing device (6) to be adjusted.

5. Connecting part for a coupling device according to one of the preceding claims, wherein the lower bearing device (8) in the mounting position and the locking stop (10) are formed on a common rotary lever (14), wherein the rotary lever (14) is pivotably mounted on the connecting part (1).

6. Connecting part for a coupling device according to the two preceding claims, wherein the adjustable support (13) is arranged on the rotary lever (14).

7. Connecting part for a coupling device according to one of the preceding claims, wherein the locking stop (10) has a recess (18) for at least partially enclosing the at least one locking bolt (12) that can be stored in the coupling part (2).

8. Connecting part for a coupling device according to one of the preceding claims, wherein the upper bearing device (6) of the connecting part (1) is designed in the form of at least one hook-shaped projection (19).

9. Connecting part for a coupling device according to the preceding claim, wherein the at least one hook-shaped projection (19) has a tapered tip (20).

10. Coupling device (1, 2) for producing a detachable connection between a crane arm (3) and a work device (4), comprising - a connecting part (1) according to one of the preceding claims, and - a coupling part (2) with second fastening means (21) for attaching the coupling part (2) to a work device (4) or to a crane arm (3), wherein the coupling part (2) has an upper stop (7) for the connecting part (1) in the mounting position and a lower stop (9) for the connecting part (1) spaced apart from it by a second distance in the mounting position, wherein in a coupled state of the coupling part (2) with the connecting part (1) the upper stop (7) of the coupling part (2) is in contact with the upper bearing device (6) of the connecting part (1) and the lower stop (9) of the coupling part (2) is in contact with the lower bearing device (8) of the connecting part (1).

11. Coupling device according to the preceding claim, wherein the locking device (10, 11, 12) on the coupling part (2) has a bearing device (11) for the at least one locking bolt (12), preferably in the form of receiving openings, spaced at a third distance (x3) from the upper stop (7) of the coupling part (2), preferably arranged in the mounting position below the lower stop (9).

12. Coupling device according to the preceding claim, wherein the distance of the locking stop (10) to the upper bearing device (6) in the mounting position can be adjusted to the third distance (x3) between the bearing device (11) for the at least one locking bolt (12) and the upper stop (6) by means of the adjusting device.

13. Coupling device according to one of claims 10 to 12, wherein the upper stop (7) of the coupling part (2) is in the form of at least one bolt-shaped stop (22) and the lower stop (9) of the coupling part (2) is in the form of at least one console (23).

14. Coupling device according to the preceding claim, wherein the at least one bolt-shaped stop (22) is mounted on plates (24) projecting from the coupling part (2), wherein the plates (24) are tapered at an upper end (25) in the mounting position to form a funnel-shaped insertion aid for the upper bearing device (6) of the connecting part (1).

15. Coupling device according to one of claims 10 to 14, wherein the coupling part (2) has a bearing device (11) for the at least one locking bolt (12), wherein the bearing device (11) is formed on bearing plates (26) projecting from the coupling part, wherein the bearing plates (26) are tapered at one end (27) to form a funnel-shaped insertion aid for the locking stop (10) mounted on the connecting part (1).

16. Crane (40) with at least one crane arm (3), wherein a coupling device (1, 2) with a connecting part (1) and a coupling part (2) according to one of claims 10 to 15 is arranged on the at least one crane arm (3).

17. Vehicle (41) with a crane (40) according to the preceding claim.

18. Method for coupling and uncoupling a coupling device (1, 2) with a connecting part (1) and a coupling part (2) using a coupling device (1, 2) according to one of claims 10 to 15.

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