Rotation and / or oscillation device

Abstract

The invention relates to a rotating and / or pivoting device for mounting on a construction machine, comprising a coupling part (1) and a holder (6) for a tool or a quick changer (8) for coupling a tool or an additional device, which holder (6) is movably arranged on the coupling part (1), the carrier (6) is arranged on the coupling part (1) in such a way that the carrier can be electrically rotated about a rotational axis (8) by means of a rotational drive (8) and / or in such a way that the carrier can be pivoted about a pivot axis (3) by means of a pivot drive (4, 5). According to the invention, the rotating and / or oscillating device has a central lubricant supply device (27), which has a lubricant pump (29), which can be automatically actuated and is provided with a lubricant reservoir (28), for delivering lubricant to the different lubrication points (32).

Description

Technical Field

[0001] The invention relates to a rotating and / or pivoting device for mounting on a construction machine according to the preamble of claim 1 . Background Art

[0002] This type of rotating and / or swinging device is used in excavators or other similar engineering machines as a rotating and / or swinging device for expanding the possibility of movement between additional parts and tools of the engineering machine. This rotating and swinging device usually includes a coupling that can be mounted on the engineering machine and a bracket arranged in a movable manner at the coupling, the bracket being used to connect the tool or additional device, wherein the bracket is arranged at the coupling in a manner that can be rotated around a rotation axis by an electric rotation drive and / or in a manner that can be swung around a swing axis orthogonal to the rotation axis by a swing drive. A combined rotating and swinging device, also known as a tilt rotator, is known from German patent document DE 10 2020 127 313 B3. Here, the bracket of the quick changer is arranged on a coupling that can be mounted on the excavator in a manner that can be rotated around a rotation axis by means of a hydraulic rotation drive and in a manner that can be swung around a swing axis orthogonal to the rotation axis by means of a hydraulic swing drive. This type of tiltrotator allows attachments connected to the quick-change mechanism (such as, for example, a rotating bucket, a grab bucket, a shears, a compactor, a magnet, a hydraulic hammer, etc.) to be rotated not only about a pivot axis arranged transversely to the longitudinal axis of the excavator boom, but also about a rotation axis orthogonal to this pivot axis.

[0003] Rotating and / or oscillating devices of the type described above typically have a number of different lubrication points that must be lubricated regularly to ensure proper operation and prevent wear. However, regular lubrication is often neglected or forgotten during daily operation, which can lead to unwanted wear and resulting damage, as well as operational disruptions / malfunctions. Summary of the Invention

[0004] The object of the present invention is to provide a rotating and / or pivoting device of the type mentioned at the outset which ensures regular lubrication of the various lubrication points even without separate intervention.

[0005] This object is achieved by a rotating and / or pivoting device having the features of claim 1. Expedient embodiments and advantageous developments of the invention are specified in the dependent claims.

[0006] The rotating and / or oscillating device according to the present invention comprises a coupling element that can be mounted on a construction machine and a holder for attaching a tool or an additional device, movably arranged on the coupling element. The holder is arranged on the coupling element so that it can be rotated about a rotation axis by an electric rotation drive and / or can be swiveled about a swivel axis by an oscillating drive. The rotating and / or oscillating device also comprises a central lubricant supply system having an automatically operable lubricant pump and a lubricant reservoir. The automatically operable lubricant pump, arranged on the rotating and / or oscillating device, allows lubricant provided in the lubricant reservoir to be supplied to various lubrication points of the rotating and / or oscillating device, even without a lubricant connection to a central lubrication system on the construction machine and without separate operator intervention. For example, the lubricant pump can be automatically activated when the rotating and / or oscillating device is operated or when the construction machine is started. This ensures that lubrication of various lubricating points, which is important for preventing wear, is not neglected. By integrating the lubricant supply device on the rotating and / or pivoting device and being independent of the central lubrication system of the construction machine, lubricant lines and, if necessary, a connection specially designed for this purpose between the rotating and / or pivoting device and the central lubrication system arranged on the construction machine are no longer necessary.

[0007] In a particularly advantageous embodiment, a housing part is arranged on the coupling part, which is mounted so as to be pivotable about a pivot axis and can be rocked by a pivot drive. In this housing part, a bracket is mounted so as to be rotatable about a rotation axis perpendicular to the pivot axis and can be rotated electrically by a rotary drive. This type of rotary and pivot drive, also known as a tiltrotator, allows an auxiliary device coupled to the rotary and pivot drive (such as, for example, a rotating bucket, a grab bucket, a shears, a compactor, a magnet, a hydraulic hammer, etc.) to be rotated not only about a pivot axis arranged transversely to the longitudinal axis of the excavator boom, but also about a rotation axis perpendicular to the pivot axis.

[0008] In a particularly advantageous embodiment, the lubricant pump is connected via a supply line to a distribution unit, which distributes the lubricant delivered by the lubricant pump to the various lubrication points. This allows the lubricant to reach the respective lubrication points in a predetermined manner. The distribution unit can be used to predetermine the lubricant quantity required for each lubrication point. Multiple lubricant supply lines leading to the various lubrication points can be connected to the distribution unit.

[0009] Suitably, a lubricant quantity regulating device for adjusting the lubricant quantity delivered by the lubricant pump when the lubricant pump is activated is arranged at the lubricant pump. Thus, the lubricant quantity delivered by the lubricant pump from the lubricant reservoir when the lubricant pump is activated can be adjusted.

[0010] The lubricant pump can be arranged on or at a housing part of a rotating and / or pivoting device that can pivot about a pivot axis. Preferably, the dispensing unit is also arranged on or at a housing part that can pivot about a pivot axis.

[0011] In a particularly advantageous embodiment, the lubricant pump can be designed as a hydraulically actuated lubricant pump with a hydraulically actuated pump piston. However, the lubricant pump can also be electrically actuated, for example, by electrical activation when starting the construction machine. This also ensures regular lubrication of the rotating and / or pivoting device.

[0012] The lubricant pump can be activated by actuating the pivot drive or by actuating the rotary drive. In the case of a hydraulic rotary and pivot drive and a hydraulically actuated lubricant pump, the lubricant pump can be connected via a bypass to the hydraulic circuit H2 for actuating the pivot drive or to the hydraulic circuit H1 for actuating the rotary drive.

[0013] The rotary drive may comprise a hydraulic motor which can be actuated via a first hydraulic circuit H1 , and the pivot drive may be formed by two double-acting actuating cylinders which are movable in opposite directions and actuated via a second hydraulic circuit H2 .

[0014] A quick changer configured for connecting tools can be arranged at the support. However, a grab or other tool can also be arranged directly at the support 6. In addition, the support can also be configured as a housing for the quick changer.

[0015] The coupling can include two spaced-apart pin-shaped coupling elements for connecting the coupling to the quick-change mechanism. This allows the coupling, and thus the rotary and oscillating drive, to be connected to the excavator arm via the quick-change mechanism and used in a sandwich arrangement with another lower quick-change mechanism for automatically changing additional tools. However, the coupling can also be fixedly mounted on the excavator arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features and advantages of the present invention are apparent from the following description of preferred embodiments based on the accompanying drawings, in which:

[0017] Figure 1 The rotating and oscillating device with a quick changer and an automatic lubricant supply is shown in a first perspective view;

[0018] Figure 2 Shown Figure 1 An enlarged detail of the rotating and oscillating mechanism, and

[0019] Figure 3 Shown is the Figure 1 and Figure 2The hydraulic circuit layout of the automatic lubricant supply device for the rotating and swinging devices is shown in FIG. DETAILED DESCRIPTION

[0020] exist Figure 1 The rotating and pivoting device, shown in a perspective view and also referred to as a tiltrotator, comprises a coupling element 1 that can be attached to an excavator boom or other attachment element of a construction machine, either directly or via a hydraulically actuated quick-change mechanism. A housing element 2 is supported on the coupling element so that it can pivot about a pivot axis 3 and is arranged on the coupling element so that it can pivot about this axis 3 by means of a pivot drive, here formed by two hydraulic adjustment cylinders 4 and 5. A support 6 is supported in the pivotable housing element 2 relative to the coupling element 1 so that it can pivot about a rotation axis 7 perpendicular to the pivot axis 3. The support 6 can be rotated 360 degrees electrically by a rotary drive 8. In the illustrated embodiment, a quick-change mechanism 9 designed for attaching a tool is arranged on the support 6. However, a grab bucket or other tool can also be arranged directly on the support 6. Furthermore, the support 6 can also be designed as a housing for a quick-change mechanism.

[0021] Here, the rotary drive 8, which is configured as a hydraulic drive, includes a hydraulic motor 10, by means of which the bracket 6 can be rotated 360° relative to the housing part 2 about the rotation axis 7 by electric means via a transmission mechanism, the transmission mechanism having a worm gear arranged in the housing part 2 and a drive worm that can be rotated by the hydraulic motor 10.

[0022] The housing part 2 is arranged on the coupling part 1 so as to be pivotable about a pivot axis 3 orthogonal to the rotation axis 7 via laterally projecting journals 11 in two bearing bores 12 spaced apart from one another. The housing part 2 can be pivoted by approximately + / -45° relative to the coupling part 1 about the pivot axis 3 via a hydraulic pivot drive formed by two actuating cylinders 4 and 5. A tilting rotator, also referred to as a rotary-pivot drive, allows attachments connected to the quick-change device 9 to be rotated not only about the rotation axis 7 but also to be tilted relative to the coupling part 1 about the pivot axis 3 orthogonal to the rotation axis 7, thereby expanding the range of motion possibilities and thus increasing the scope of application.

[0023] In the illustrated embodiment, the coupling element 1 has two parallel side cheeks 13 and a front and rear cross piece 14 with bearing holes 12 arranged therein. The housing element 2 is mounted so that it can pivot about the pivot axis 3 via two journals 11 in the bearing holes 12 of the front and rear cross piece 14. In the illustrated coupling element 1, two pin-shaped coupling elements 15 and 16, spaced apart and parallel to each other, are arranged in the two side cheeks 13 for connection to a hydraulically actuated quick-change device (not shown here) arranged on the construction equipment.

[0024] DE 10 2018 128 479 A1 discloses an embodiment of a hydraulically actuated quick-change device for automatically coupling a tiltrotator, arranged on an excavator arm or other construction equipment. For the known structure and operating principle of this hydraulically actuated quick-change device, reference is explicitly made to this publication. However, the coupling element 1 can also be mounted directly on the excavator's boom and coupler without the intervening hydraulically actuated quick-change device.

[0025] In the illustrated embodiment, the pivot drive is formed by two double-acting actuating cylinders 4 and 5, each of which has a cylinder housing 18 fastened to the corresponding side cheek 13 of the coupling part 1 via a support 17 and a piston rod 19 displaceably arranged in the cylinder housing 18 and hydraulically movable. The free end of the piston rod 19 is connected to the drive housing 9 via a hinge hole 20 and a corresponding support 21. Thus, by correspondingly retracting and extending the two piston rods 19 of the actuating cylinders 4 and 5, the housing part 2 with the bracket 6 rotatably mounted therein can be pivoted relative to the coupling part 1. However, the pivot drive can also be formed by a hydraulic motor or other suitable hydraulic drive.

[0026] The quick-change device 9, designed for connecting an attachment or tool, includes a housing 22, which is welded or cast. The housing has a first receptacle 23, open to one side, for receiving and supporting a first pin-shaped coupling element on the tool side; and a second receptacle 24, open to the other side and downward, for receiving and supporting a second pin-shaped coupling element on the tool side. The first receptacle 23, open to one side, is shaped like a claw or fork. The second receptacle 24, open to the other side and downward, has a curved lower contact surface for contacting the pin-shaped coupling element. A manually or hydraulically actuated locking device is provided on the second receptacle 24. The locking device has two locking bolts 26, movable within a bore 25 between an extended locked position and a retracted unlocked or changing position. The locking bolts 26 can be moved between the retracted unlocked or changing position and the extended locked position, for example, manually via a manually pivotable lever or hydraulically. Different tools or attachments, such as, for example, a rotary bucket, a grab bucket, a shears, a compactor, a magnet, a hydraulic hammer, etc., can thus be connected to the quick-change device 9 .

[0027] Especially from Figure 2As can be seen in the enlarged detail view of the rotary and swivel drive, the central lubricant supply 27 includes an automatically operated lubricant pump 29 equipped with a lubricant reservoir 28, and a distribution unit 31 connected to the lubricant pump 29 via a supply line 30. The distribution unit is used to distribute the lubricant to various lubrication points 32. The lubricant reservoir 28, designed as a container for receiving a sufficient amount of grease or a corresponding lubricant, is arranged on the lubricant pump 29 and can be mounted together with the lubricant pump on the housing part 2. For example, the grease provided in the lubricant reservoir 28 is used as the lubricant. To distribute the lubricant to the various lubrication points 32, a plurality of lubricant supply lines 33 leading to the respective lubrication points 32 are connected to the distribution unit 31. The distribution unit 31 can be used to preset the lubricant quantity required for each lubrication point 32.

[0028] exist Figure 3 The circuit diagram in FIG. 1 shows a hydraulic circuit arrangement for controlling the rotary drive 3, formed here by a hydraulic motor 10, the pivot drive, formed here by two actuating cylinders 5 and 6, and the lubricant pump 29 of the central lubricant supply 27 for the rotary and pivot drives. This circuit arrangement includes a control device 34, located, for example, on an excavator. The control device comprises a first control valve 35, designed as a 3 / 4-way valve, for controlling a first hydraulic circuit H1, used in this case to control the hydraulic motor 10 of the rotary drive 3; and a second control valve 36, designed as a 3 / 4-way valve, for controlling a second hydraulic circuit H2, used in this case to control the two actuating cylinders 5 and 6 of the pivot drive. The two actuating cylinders 4 and 5 of the pivot drive are controlled by the second hydraulic circuit H2 via a branch 37 and four connections 38 to 41. These cylinders can be extended or retracted in opposite directions, thereby enabling the support 6 to pivot about the pivot axis 3. A lowering brake locking valve 42 is located upstream of each of the connections for retracting and extending the two actuating cylinders 4 and 5.

[0029] In the illustrated embodiment, the lubricant pump 29 is designed as a hydraulically actuated lubricant pump having a hydraulically actuated pump piston 43 and a lubricant quantity control device 44 for adjusting the delivered lubricant quantity. The lubricant pump 29 is actuated via the hydraulic circuit H2 via a bypass 45 branching off from the hydraulic circuit H2. This ensures that when the two actuating cylinders 4 and 5 are actuated to actuate the pivot drive, the lubricant pump 29 is also activated simultaneously to supply lubricant to the lubrication points 32. However, the bypass 45 can also branch off from the first hydraulic circuit H1 so that the lubricant pump 29 is activated when the hydraulic motor 10 of the rotary drive 8 is actuated. This also ensures regular lubrication.

[0030] The invention is not limited to the rotary and oscillating drive described in detail above. The central and automatically controlled lubrication device can also be used for simple rotating or oscillating devices.

[0031] List of Reference Numerals

[0032] 1Connector

[0033] 2 shell parts

[0034] 3 Swing axis

[0035] 4First adjustment cylinder

[0036] 5Second adjustment cylinder

[0037] 6 brackets

[0038] 7 Swing axis

[0039] 8 Rotation drive device

[0040] 9 Quick changer

[0041] 10 hydraulic motors

[0042] 11 journal

[0043] 12 bearing holes

[0044] 13. Lateral cheek

[0045] 14 horizontal pieces

[0046] 15 first connecting element

[0047] 16 Second connecting element

[0048] 17 support

[0049] 18 cylinder housing

[0050] 19 piston rod

[0051] 20 hinge holes

[0052] 21 support parts

[0053] 22 shell

[0054] 23 first receiving portion

[0055] 24 second receiving portion

[0056] 25 holes

[0057] 26 lock bolts

[0058] 27 Central lubricant supply device

[0059] 28 Lubricant reservoir

[0060] 29 Lubricant pump

[0061] 30 supply pipeline

[0062] 31 allocation units

[0063] 32 Lubrication parts

[0064] 33 Lubricant supply line

[0065] 34 control devices

[0066] 35 first control valve

[0067] 36 Second control valve

[0068] 37 Branch Road

[0069] 38 first connection end

[0070] 39 second connection end

[0071] 40 third connection terminal

[0072] 41 fourth connection terminal

[0073] 42 descent brake lock valve

[0074] 43 pump piston

[0075] 44 Lubrication quantity adjustment device

[0076] 45 bypass

Claims

1. A rotating and / or oscillating device for installation on a construction machine, the rotating and / or oscillating device comprising a coupling (1) and a holder (6) for a tool or a quick changer (8) for connecting a tool or an additional device arranged in a movable manner on the coupling (1), wherein: The bracket (6) is arranged on the coupling (1) in such a way that it can be rotated about a rotation axis (8) by an electric rotation drive (8) and / or can be swung about a swivel axis (3) by swivel drives (4, 5), and is characterized in that a central lubricant supply device (27) is provided, which has a lubricant pump (29) that can be automatically operated and is provided with a lubricant reservoir (28), which is used to convey lubricant to different lubrication points (32) of the rotating and / or swivel device.

2. The rotating and / or oscillating device according to claim 1, characterized in that: A housing part (2) is arranged on the coupling part (1) so as to be supported so as to be able to swing about a swing axis (3) and to be rocked by a swing drive (4, 5). A bracket (6) is supported in the housing part so as to be able to be rotated electrically by a rotary drive (8) about a rotation axis (7) orthogonal to the swing axis (3).

3. The rotating and / or oscillating device according to claim 1 or 2, characterized in that: The lubricant pump (29) is connected to a distribution unit (31) via a supply line (30). The distribution unit is used to distribute the lubricant delivered by the lubricant pump (29) to different lubrication points (32).

4. The rotating and / or oscillating device according to claim 3, characterized in that: A plurality of lubricant supply lines (33) leading to different lubrication points (32) are connected to the distribution unit (31).

5. The rotating and / or oscillating device according to any one of claims 1 to 4, characterized in that A lubricant quantity regulating device (44) is arranged on the lubricant pump (29) for adjusting the lubricant quantity delivered by the lubricant pump (29) when the lubricant pump is activated.

6. The rotating and / or oscillating device according to any one of claims 1 to 5, characterized in that The lubricant pump (29) is arranged on the housing part (2).

7. The rotating and / or oscillating device according to any one of claims 1 to 6, characterized in that The lubricant pump (29) is designed as a hydraulically actuated lubricant pump having a hydraulically actuated pump piston (43).

8. The rotating and / or oscillating device according to any one of claims 1 to 7, characterized in that The lubricant pump (29) is activated by actuating the pivot drive (4, 5) or by actuating the rotary drive (8).

9. The rotating and / or oscillating device according to claim 8, characterized in that: The lubricant pump (29) is connected via a bypass (45) to a hydraulic circuit H2 for actuating the pivot drive (4, 5) or a hydraulic circuit H1 for actuating the rotary drive (8) or another hydraulic circuit.

10. The rotating and / or oscillating device according to claim 8, characterized in that: The rotary drive device (8) comprises a hydraulic motor (10) which can be controlled via a first hydraulic circuit H1.

11. The rotating and / or oscillating device according to claim 9 or 10, characterized in that: The pivot drive (4, 5) is formed by two double-acting actuating cylinders which are movable in opposite directions and can be actuated via a second hydraulic circuit H2.

12. The rotating and / or oscillating device according to any one of claims 1 to 11, characterized in that A quick-change device (9) configured for connecting a tool or an additional device is arranged on the bracket (6).

13. The rotating and / or oscillating device according to any one of claims 1 to 12, characterized in that The coupling (1) comprises two pin-shaped coupling elements (15, 16) spaced apart from each other for coupling the coupling (1) to a quick changer.

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