Excavator working device

Abstract

The present invention relates to a working device for an excavator (11), comprising a base (44), a tool (45) mounted on the base (44), and a first replacement half (41) of the quick change device (23) disposed on the base (44), connected to and locked with a second replacement half (42) of the quick change device (23) mounted on the excavator (11), and spaced apart from the tool (45). The first replacement half (41) comprises two of the locking bolts (55) arranged at a distance from each other. A drive device (72) is mounted on the base (44) and drives the tool (45). The locking bolt (55) is integrated into the base.

Description

[Technical Field]

[0001] The invention relates to a working device for an excavator according to the general title of claim 1.

[0002] German Utility Model No. 202021101016 discloses a work device for earthmoving machines, particularly excavators, with an excavation tool designed as a bucket or shovel. A quick-change device is provided for interchangeable placement of the work device in the handle of the excavator. The quick-change device comprises two replacement halves, one of which is attached to the handle of the excavator and the second of which is attached to the bucket or shovel. The second replacement half consists of two pillow-shaped bearings arranged at a distance from each other and welded to the outside of the bucket, specifically to the upper wall section. Two locking bolts are fixed between the two pillow-shaped bearings. Locking elements of the first replacement half engage with the locking bolts of the second replacement half to connect and lock the two replacement halves together. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] German Utility Model No. 202021101016 Summary of the Invention [Problem to be solved by the invention]

[0004] The invention is based on the object of creating a working device for an excavator, with which improved throughput is achieved when working. [Means for solving the problem]

[0005] This object is solved by a working device, in which a drive device for driving the tool is provided on a base. A locking bolt from a first change half of the quick change device is integrated into the base of the working device. By integrating the locking bolt into the base of the working device, the height of the entire tool can be reduced compared to working devices known in the prior art by at least the height of a pillow or flange bearing welded onto the base of the working device for accommodating the locking bolt.

[0006] By reducing the overall height of the work device, the effective lever arm between the coupling device connected to the handle of the excavator and the tool of the work device can be reduced. This makes it possible to increase the handling force acting on the work device, for example, when digging, crushing, or compacting. Additionally, reducing the overall height of the work device has the advantage that the load on the work device can be reduced by shortening the lever arm, while maintaining the same handling force to control the work device. Integrating the locking bolt into the base of the work device also makes it possible to strengthen this base, thereby improving the reliability of the work device.

[0007] Advantageously, the locking bolt is provided to be located within the envelope of the base and attached to the base, which not only allows for a compact design and a reduced height of the base, but also makes it possible to strengthen the base at the same time.

[0008] It is preferred that the locking bolt is integrated into the base body, in particular that the locking bolt is inseparable from the base body. The set height of the working device is essentially determined by the base body with the tools arranged thereon, such as grippers, plate compactors, drills, breaking cutters, etc.

[0009] Furthermore, in order to reduce the set height of the working device, any rotary drive between the working device and the first exchange half assigned to the working device for the rotational alignment of the tool is preferably omitted, since the second exchange half, i.e. the handle-side exchange half, has an integrated rotary drive.

[0010] Furthermore, preferably, the overall height of the base of the working device is provided to be formed by the distance between the tool and the upper wall section or upper wall of the base, or at least the upper end surface of the base, and the locking bolt is provided to be positioned within the overall height of the base of the working device.

[0011] According to a preferred embodiment of the working device, the base body has two side walls spaced apart from one another, and the locking bolt is provided between these side walls, in particular in a non-replaceable manner, thereby preserving the basic structure of the working device and making it possible to connect the locking bolt directly to the side walls of the base body. In this way, the first replacement half is connected to the base body in a non-rotating manner.

[0012] According to another preferred embodiment of the working device, the base body is provided with a recess in the upper wall or upper wall section or between the side walls of the base body. This recess extends into the upper wall or upper wall section or between the side walls of the base body. This embodiment has the advantage that the overall structural height can be reduced by the amount of pillow-type or flange-type bearings known in the prior art and that the locking bolts can be welded or screwed in to accommodate them. The recesses and locking bolts extending therein also make it possible to reinforce or strengthen the base body in its upper region for connection to the second replacement half of the quick-change device.

[0013] Furthermore, the base body of the working device preferably encloses a receiving space that is open on one side and open at the bottom towards the tool.

[0014] The base of the work device can be formed by a housing that is at least partially closed on the side opposite the tool, with the locking bolt being arranged between the side walls of the housing. For example, a housing can be provided on a plate compactor designed as a tool to house a drive device for the compactor, whereby the housing is open towards the plate compactor and substantially closed on the other side, with the side walls of the housing designed to house the locking bolt extending therebetween. This allows hydraulic and / or electrical lines to be routed from the first replacement half within the housing and / or from the tool itself, thereby providing protection against mechanical damage compared to the exposed external routes of the prior art.

[0015] According to another advantageous embodiment of the invention, a locking bolt is provided which is fixed, preferably by welding, to the side wall section of the recess or to the side wall of the base body which bounds the recess, which makes it possible to reinforce the base body without restricting the basic function of the working device.

[0016] Furthermore, the first replacement half preferably comprises two locking bolts arranged at a distance from each other, which are fixed between the side walls, in particular by welding, pinning or screwing, and are integrated into the side walls of the base and / or the side wall sections of the first replacement half form part of the base, so that the first replacement half and the base can be formed in one piece and / or integrated with each other.

[0017] The invention as well as other advantageous and alternative embodiments will be described and explained in more detail below with reference to examples shown in the drawings. The features from the description and drawings can be used individually or in any combination according to the invention. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a schematic side view of an excavator with a work device. [Figure 2]2 is a perspective view of a mounting device for connecting to the handle shown in FIG. 1. FIG. [Figure 3] FIG. 3 is a schematic side view of the wearing device shown in FIG. 2. [Figure 4] FIG. [Figure 5] FIG. 5 is a schematic side view of the working device shown in FIG. 4. [Figure 6] FIG. 5 is a schematic front view of the working device shown in FIG. 4. [Figure 7] FIG. 7 is a schematic cross-sectional view taken along line XX in FIG. 6. DETAILED DESCRIPTION OF THE INVENTION

[0019] FIG. 1 shows a schematic side view of an excavator 11. The excavator 11 comprises a basic machine 13 with a boom 12, which is hinged at its end with a handle 14. The boom 12 is moved up and down by a lifting cylinder 19. The boom 12 comprises at least one handle cylinder 18 for actuating the pivoting of the handle 14. At least one pressure cylinder 16 is provided on the handle 14, thereby actuating a mounting device 21 provided on the handle 14. The mounting device 21 is pivotally attached to the end of the handle 14 at a mounting axis 17. This mounting device 21 may comprise a rotation device 22 with a rotation pivot 24 and a coupling device, in particular a quick-change device 23. The rotation device 22 comprises a drive housing 66. The quick-change device 23 can be rotated relative to the drive housing 66 along a rotation axis 26 by the rotation drive 24. A working device 25 is exchangeably provided on the quick-change device 23. The quick change device 23 has a first change half 41 provided on the working device side and a second change half 42 provided on the rotary drive 24. The second change half 42 has at least one controllable latch 56. After positioning a latch receiver 59 on a first locking bolt 55 on the first change half 41, the latch 56 can engage behind the second locking bolt 55 on the first change half 41 to connect and lock the first and second change halves 41, 42. Such a quick change device is known, for example, from German Utility Model No. 202021101016.

[0020] A pivoting mechanism 27 is provided for controlling the pivoting movement of the mounting device 21. The pivoting mechanism 27 comprises a deflector 28, one end of which is articulated to the handle 14 at a deflector axis 29. The pivoting mechanism 27 further comprises an exchanger 31, which is connected to one end of the deflector 28 via a common pivot axis 35. The exchanger 31 engages at its opposite end with a coupling device 33, which is a component of or attached to the mounting device 21. Preferably, the drive housing has at least a partially extending cover surface on which the coupling device 33 is provided. The pressure cylinder 16, in particular the piston rod of the pressure cylinder 16, engages with the pivot axis 35 of the pivoting mechanism 27.

[0021] 2 shows a perspective view of the wearing device 21. FIG. 3 shows a schematic side view of the wearing device 21 shown in FIG.

[0022] The coupling device 33 comprises two side plates 36 arranged at a distance from one another. The side plates 36 can be connected to at least one connecting plate 34 extending between the side plates 36. The at least one connecting plate 34 can rest on the upper side of the rotation device 22 and is preferably removably fixed thereto. Each side plate 36 comprises a coupling bearing point 37 and a mounting bearing point 38. The coupling bearing points 37 and the mounting bearing points 38 are offset in height relative to one another. The mounting bearing points 38 are recessed relative to the coupling bearing points 37. The mounting bearing points 38 can also be offset in the direction of a rotation plane 39 of the rotation device 22 or can rest on this rotation plane 39. The mounting bearing points 38 are offset laterally outward relative to the mounting device 21, in particular the rotation device 22, or are assigned to an end face of the rotation device 22.

[0023] Figure 4 shows a perspective view of the working device 25 shown in Figure 1. Figure 5 shows a schematic side view of the working device 25. Figure 6 shows a rear view, and Figure 7 shows a cross-sectional view along line XX in Figure 6.

[0024] The working device 25 comprises a base body 44. A tool 45 is provided on the base body 44. The tool 45 is designed, for example, as a plate compactor and is provided on the underside of the base body 44.

[0025] In this working device 25, the base body 44 is designed, for example, as a housing 71 that is open on at least one side, or in particular on one side, namely the lower side. This housing 71 has side walls 47, 48 as well as a top wall 49 and a rear wall 51 as well as a front wall 52. Due to these walls, the housing 71 is open at the bottom. A drive device 72 is shown diagrammatically in the housing 71 by dashed lines. This drive device 72 is connected to a tool 45. This working device 25 is, for example, a compactor. The drive device 72 has a motor and drives the tool 45 in the form of a plate compactor.

[0026] The side walls 47, 48 of the base 44 extend above the top wall 49. A locking bolt 55 is arranged between the side walls 47, 48 of the housing 71. The locking bolt 55 arranged between the side walls 47, 48 of the housing 71 forms the first replacement half 41. This first replacement half 41 is not formed separately as an adapter plate. Instead, this first replacement half 41 is integrated into or rigidly connected to the housing 71 of the drive device 25, and is provided in one piece. Thus, the first replacement half 41 is non-rotatably connected to the housing 71. In this embodiment, the original height of the side walls 47, 48 of the housing 71 is maintained, and the top wall 49 is recessed relative to the upper end surfaces of the side walls 47, 48, or a recess 57 is provided in the top wall 49. The outer side walls 47, 48 of the housing 71 form an outer envelope 61. The locking bolt 55 is fixed to the base body 44 on the inside of the outer packet part 61 or adjacent to the outer packet part 61 from the inside, so that the locking bolt 55 can be positioned between the side walls 47, 48 and thereby integrated into the base body 44.

[0027] If the length of the locking bolts 55 requires a wider area than the housing 71 in order to firmly grip and lock them through the second replacement half 42, the housing 71 can also extend laterally beyond the side wall sections 58 of the side walls 47, 48. If the housing 71 is wider than the required length of the locking bolts 55, the top wall 49 can also be provided with a recess in which the locking bolts 55 are located or integrated. If the width of the working device 25 corresponds to the length of the locking bolts 55, the side wall sections 58 are part of the side walls 47, 48 of the base 44.

[0028] By integrating the locking pin 55 or the first replacement half 41 into the top wall 49 or the top wall section of the base 44, a strengthening of the working device 25 can also be achieved.

[0029] The above-described embodiments also apply to other work devices 25, the following of which are listed by way of example, but not exhaustive: crushing machines, hydraulic hammers, grabs, vacuum magnet devices, electromagnetic devices, leveling beams, sweeper rollers, blade separators, reapers, jaw crushers, etc.

Claims

1. A working device of an excavator (11), comprising: With a substrate (44), With a tool (45) provided on the base (44), a first replacement half (41) of a quick change device (23) disposed on the base (44), the first replacement half (41) being spaced from the tool (45) and for connecting and locking to a second replacement half (42) of the quick change device (23) provided on the excavator (11); The first replacement half (41) comprises at least two locking bolts (55) spaced apart from each other; wherein the work device is a drive device (72) for driving the tool (45) is provided on said base (44); and said locking bolt (55) being integrated into said base body (44); A working device characterized by:

2. 2. A working device according to claim 1, characterized in that the locking bolt (55) is located within an outer envelope (61) of the base body (44) and is anchored to the base body (44).

3. 3. The working device according to claim 1 or 2, characterized in that the locking bolt (55) is integrated and fixed to the base body (44) without a pillow bearing, a flange bearing or a rotating device being mounted on the base body (44).

4. 4. The working device according to claim 1, wherein the overall height (G) of the base (44) is formed by the distance between the tool (45) and the upper wall (49) of the base (44), or the distance between the tool (45) and the upper wall section of the base (44), or the distance between the tool (45) and at least the upper end surface of the base (44), and wherein the locking bolt (55) is located within the overall height (G) of the base (44).

5. 5. The working device according to claim 1, wherein the base body (44) has two side walls (47, 48) spaced apart from one another, and the locking bolt (55) is fixed between the side walls (47, 48), in particular in a non-replaceable manner.

6. 6. The working device according to claim 1, wherein the base (44) has a recess (57) in the top wall (46) or in the top wall section of the base (44) or between the side walls (47, 48) of the base (44), and the locking bolt (55) is positioned in the recess (57).

7. 7. The working device according to claim 1, wherein the base (44) encloses a receiving space (53), which is designed to be open on one side and downwards towards the tool (45), and on the opposite side the locking bolt (55) is arranged so as to be integrated and / or non-rotatably fixed in the base (44), in particular so as to be non-removably anchored.

8. 8. The working device according to claim 1, wherein the base body (44) is designed as a housing (71) with the side walls (47, 48) and is at least partially closed on the side opposite the tool (45), and the locking bolt (55) is arranged between the side walls (47, 48) of the housing (71) and is spaced apart from the tool (45).

9. 9. A working device according to any one of claims 1 to 8, characterized in that the first replacement half (41) comprises two locking bolts (55) arranged at a distance from each other and held between side wall sections (58) which are integrated into the base body (44) in one piece, in particular in a monolithic cast piece, and / or which form part of the base body (44).

10. 10. A working device according to any one of claims 1 to 9, characterized in that the tool (45) is designed as a plate compactor, which is preferably arranged on the drive device (72) with a quick change device.

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