EP3000941B1 - Mounted compactor - Google Patents

Description

The invention relates to a cultivation compressor, with a coupling device, with which it can be coupled to an arm of an excavator, and with a compressor plate, the compressor plate having two opposite edge portions, of which at least temporarily one has a bump and the other edge portion is flat.

In the present application, a bump is understood to mean an angling of the compactor plate in an edge section in the position of use away from the ground. For this purpose, a portion of the compressor plate, for example, in a predetermined angle of attack on the flat in use position resting on the soil part of the compressor plate to be bent. The high bend could also be generated by a separate, flat formed part - preferably in the same thickness and the same material of the in-use position resting on the ground part of the compressor plate - is welded.

Cultivation compressors, especially hydraulic and high-frequency cultivation compressors, are known as accessories for excavators in particular for compacting soil in trench, sewer and pipeline construction. In combination with quick-change devices and turrets, they provide cost-effective replacements that save costs and increase occupational safety by eliminating the need for construction workers to dig in trenches. The attached compactor is operated from the excavator cabin.

Such a cultivation compressor is for example from the DE 10 2013 200 274 A1 known. For compaction of the soil, the known cultivation compressor on a vibrating lower part in the form of a compressor plate. To generate vibration, a hydraulic eccentric drive is used. The compactor plate is rectangular and flat and has a high bend on two opposite edge sections.

From the JP 000 H11 222 807 , of the EP 2 388 377 A2 and the DE 10 2005 024 469 A1 Cultivation compressors with features of the cultivation compactor according to the invention are known.

The invention is based on the object to provide a cultivation compressor, which is particularly effective to use.

The object is achieved by a cultivation compressor with the features of claim 1.

According to the invention, an axis of rotation of a rotary device arranged between coupling device and compressor plate, with which the compressor plate is rotatable about an axis which is at least substantially vertical in operation, is arranged closer to the edge section with the high bend than to the flat edge section opposite thereto. By the rotating device flexible working with the cultivation compressor according to the invention is made possible, so that - depending on the local conditions when compacting - the attachment compressor by the rotating device can always be positioned so that he pulled to work effectively in the direction of the arranged on the compressor plate Hochbugs can be.

It is also possible that the edge region are connected to each other with the high bows and the part of the compressor plate lying in the position of use on the ground by means of a hinge. In this case, there is the possibility that, depending on local conditions when compacting an angle of attack of the high bight to the compressor plate is variably adjustable. Of course, an angle of 180 ° is adjustable, so that the high bight would be aligned with the resting on the ground part of the compressor plate. To control the cultivation compressor preferably comprises an electronic control device which actuates an example hydraulic or electric movement means for pivoting the high bows. The control device is operated remotely by the machine operator of the excavator with the attached attachment compactor.

In contrast to the prior art, the compactor plate of the add-on compactor according to the invention on only one of two oppositely arranged edge portions on the high bight. Preferably, all other edge portions are aligned with the resting position of use in the soil of the compressor plate. It can be achieved with these (aligned) edge portions of the compressor plate the same effect when compacting soil, as with the rest of the compressor plate. The effective area of the compressor plate is thus increased compared to the prior art. This can be used advantageously in particular when starting the compressor plate at a boundary, for example in a trench, channel or shaft. In addition, the enlarged compressor plate leads to a time savings in compression.

The shallow rim portion may also be used to place the compactor plate directly under subterranean objects, e.g. Pipes or pipes, to lead and compact there soil. Especially in such rather inaccessible places otherwise cavities or other weak spots can form later, jeopardizing the stability of the pipe or the pipe.

In a preferred embodiment of the add-on compactor according to the invention, it is provided that the compressor plate has more than two edge sections, is preferably quadrangular and has four edge sections, and at least temporarily only a single edge section has a bump. Of course, the compacting plate can also be triangular or with more than four corners in addition to the quadrangular embodiment. It can also, at least in sections, be round or oval.

The size of the support surface of the compressor plate and the angle of attack of the high bows can be controlled so flexible in a remote-controlled hinge by adjusting the angle of attack of the high bugs that the compressor plate for a certain period of time, for. has a high bow on two edge sections. Subsequently, it can be controlled back to only a single high bend. In this embodiment, only a single edge portion needs to have a controllable bight; The second bow can be installed with a fixed angle.

If all bows of the compressor plate can be controlled, then it is of course also possible that all controllable bows are folded down, at least for a certain period of time, so that all bows are aligned with the rest of the compactor plate, thus resulting in a completely flat compactor plate.

It is further provided that the Ankuppeleinrichtung is arranged in a plan view of the attached compactor closer to the edge portion with the high bight than to this opposite flat edge portion. As a result, the edge portion, which has no up-bow, can be positioned without problem and without disturbing influence of the excavator arm directly on the edge of the soil to be compacted, for example on a trench wall. Furthermore, a contact pressure when compacting in the region of the compressor plate, in particular before the bump can be increased, which - depending on the nature of the soil - at least in this area can lead to a greater sinking of the compressor plate into the ground. So that when "pulling" the add-on compactor with pressure not to a "Burying" the compressor plate comes into the ground, in this area of the compressor plate, the bender is arranged, is pressed by the raised soil back under the compactor plate for compacting. In order to use this effect, the add-on compactor is preferably always drawn in the direction of the arranged Hochbugs when compacting (by the excavator). In the remote-controlled embodiment of the high bows while the angle of attack of the high bows can be adjusted accordingly.

• Figur 1 eine schematische Seitenansicht eines Baggers mit einem an dessen Baggerarm angekuppelten erfindungsgemäßen Anbauverdichter;
• Figur 2 den Anbauverdichter von Figur 1 in einer vergrößerten schematischen Seitenansicht;
• Figur 3 den Anbauverdichter von Figur 2 in einer perspektivischen Ansicht von schräg oben;
• Figur 4 eine Seitenansicht einer Verdichterplatte des Anbauverdichters von Figur 3;
• Figur 5 eine perspektivische Ansicht von schräg oben auf die Verdichterplatte des Anbauverdichters von Figur 3; und
• Figur 6 eine alternative Verbindungsmöglichkeit eines Hochbugs einer Verdichterplatte des erfindungsgemäßen Anbauverdichters.

Further advantages will become apparent from the following description and the accompanying drawings. Each shows in schematic form:

• FIG. 1 a schematic side view of an excavator with a coupled to the excavator arm according to the invention cultivation compressor;
• FIG. 2 the cultivator of FIG. 1 in an enlarged schematic side view;
• FIG. 3 the cultivator of FIG. 2 in a perspective view obliquely from above;
• FIG. 4 a side view of a compactor plate of the attached compactor of FIG. 3 ;
• FIG. 5 a perspective view obliquely from above on the compressor plate of the add-on compactor of FIG. 3 ; and
• FIG. 6 an alternative connectivity of a high bight a compactor plate of the add-on compactor according to the invention.

According to FIG. 1 the cultivation compressor 10 is connected to an arm 11 of an excavator 14 via a coupling device 12, which is preferably designed as a hydraulic quick-change device. The quick-change device allows a simple and automatic coupling and uncoupling of both the mechanics and the hydraulics.

The attachment compressor 10 comprises in the illustrated position of use below the coupling device 12, a hydraulically driven rotating device 16 (see FIGS. 1 and 2 ). Its underside is connected to an upper part 18, which is connected via elastic coupling elements 20 with a lower part 22. By means of the rotating device 16, the upper part relative to the quick-change device 12 can be rotated about an axis orthogonal in the position of use for the substrate to be compacted.

The lower part 22 in turn comprises a vibrating lower part in the form of a compressor plate 24 for compacting soil 25. On the compressor plate 24, an eccentric device 26 is arranged with an unbalance generator. This includes an unspecified hydraulic drive motor, via a perpendicular to the plane of the FIGS. 1 and 2 extending shaft is connected to a relation to the shaft axis eccentrically arranged mass. The hydraulic drive motor is over in the FIGS. 1 to 3 indicated hydraulic lines 28 hydraulically connected to the coupling device 12 and then to the hydraulic system of the excavator 14. Furthermore, the eccentric device 26 or the drive motor can directly or indirectly have a generator or other generator of electrical energy, which provides electrical energy for components of the attached compactor 10.

The compacting plate 24 is flat and, in the present case, quadrangular in form of an oblong rectangle (see Figures 3 and 5 ). Of course, it can also be triangular or with more than four corners. It can also, at least in sections, be round or oval. In the present case, the compressor plate 24 has on a transverse side a straight edge section which has a bump 30. The bows 30 represents in an edge portion of the compressor plate 24 is an angling of the compressor plate 24 in the intended use away from the soil 25.

The bows 30 can be formed by bending an edge section of the compacting plate 24 upwards at a predetermined angle of attack on the part of the compacting plate 24 lying flat against the ground 25. The bows 30 could also be produced by welding a separate, flat formed part, which is preferably made in the same thickness and in the same material of the part of the compacting plate 24 resting on the ground 25. The FIGS. 4 and 5 show, by way of example, a weld seam 32 for connecting the compressor plate 24 to the high bend 30.

The remaining edge portions, that is, the opposite side of the high bows transverse side 34 and the two longitudinal sides (without reference numerals) of the compressor plate 24 are preferably aligned with the compressor plate 24, that is, these edge portions are not angled but flat.

The coupling device 12 is in a plan view of the attached compressor 10 or in a side view according to the FIGS. 1 and 2 preferably arranged closer to the edge portion with the bump 30 than to the opposite edge portion 34, which is formed flat. The flat edge portion 34 extends beyond the outer dimensions of the upper part 18 to the side and is in the FIGS. 1 to 5 stabilized by a strut 36 additionally.

Such an arrangement of the coupling device 12 on the attached compressor 10, the compressor plate 24 can be brought to the flat edge portion 34 close to an edge or a wall, for example, a trench. Such a trench wall is in FIG. 2 indicated by a dash-dotted line. Furthermore, a contact pressure during compression, in particular in the area of the compressor plate 24, can be increased before the bump 30, which, depending on the nature of the soil 25, can lead to a greater sinking of the compressor plate 24 in this area. So that it does not come to a "digging" of the compressor plate 24 into the soil 25 when "pulling" the add-on compactor 10, in this region of the compactor plate 24, the high bight 30 is arranged, pressed by the raised soil 25 again under the compactor plate 24 for compacting becomes. In order to take advantage of this effect, the add-on compactor 10 is preferably pulled in the direction of the arranged Hochbugs 30 during compaction (by the excavator arm 11).

About the coupling device 12, the cultivation compressor 10 is not only mechanically connected to the arm 11 of the excavator 14, but - as already indicated above - with the hydraulic supply lines of the excavator 14. About this on the one hand, the rotating device 16 and on the other hand, the eccentric 26 driven. By means of the turning device 16, during operation of the add-on compactor 10, upper part 18 and lower part 22 can be rotated about an axis of rotation 38 orthogonal to the plane of the compacting plate 24. Through an operation of the
Eccentric 26 is generated on the compressor plate 24 a sinusoidal and to the plane of the compressor plate 24 orthogonal force component. By the machine operator takes the attachment compressor 10 in operation and presses on the excavator 11 on the soil to be compacted 25, the area lying below the compressor plate 24 space is compressed.

In order to indicate to the operator of the dredger 14 acting as a support vehicle that an at least substantially maximum possible compression state has been reached, the attachment compressor 10 has a sensor 40 (see FIG FIG. 1 ), which determines the said maximum possible compression. The sensor signals are processed in a processing device 42 and optionally generated corresponding optical or acoustic signals.

Based on FIG. 6 an alternative training option of the compressor plate 24 is explained, in which an angle of attack α between the compressor plate 24 and the Hochbug 30 is variably controllable. For this purpose, the add-on compressor 10 comprises an electronic control device 44, which varies the angle of attack α via a movement device for the high bows 30 symbolically indicated by an arrow 46. For example, the mover 46 could include a servomotor that moves an actuator to pivot the bob 30 (not shown). For this purpose, the high bight 30 is connected via a hinge 48 to the compressor plate 24. A preferred range for the angle of attack α is a range between 90 ° and 180 °. At a set angle of 180 °, the high bight 30 is aligned with the compressor plate 24, so that in this position, the compressor area of the compressor plate 24 is increased.

Depending on the contact pressure and a condition of the soil 25, a greater sinking of the compressor plate 24 into the soil 25 may occur. In this case, the angle of attack α of the high bight 30 can be adjusted according to the current circumstances. As a result, it can be best supported that raised soil 25 is pushed back under the compactor plate 24 for compacting.

Claims (4)

1. Mounted compactor (10) with a coupling device (12) with which it can be coupled to an arm (11) of an excavator (14), and with a compactor plate (24), wherein the compactor plate (24) has two opposing edge portions, of which for at least part of the time the one has a high nose (30) and the other edge portion (34) is flat, characterised in that a rotation axis (38) of a rotation device (16), which is arranged between the coupling device (12) and the compactor plate (24) and by means of which the compactor plate (24) can be rotated about an axis which is at least substantially vertical in operation, is arranged closer to the edge portion with the high nose (30) than to the opposite flat edge portion (34).
2. Mounted compactor (10) according to claim 1, characterised in that the compactor plate (24) has more than two edge portions, preferably is quadrangular and has four edge portions, and for at least part of the time only a single edge portion has a high nose (30).
3. Mounted compactor (10) according to claim 1 or 2, characterised in that in a top view onto the mounted compactor (10), the coupling device (12) is arranged closer to the edge portion with the high nose (30) than to the opposite flat edge portion (34).
4. Mounted compactor (10) according to any of the preceding claims, characterised in that a hinge (48) is arranged between the edge portion with the high nose (30) and the compactor plate (24) in order to vary a working angle (α) of the high nose (30) during compaction depending on local circumstances.

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