EP0663478B1 - Combination of a digger with a vibrating device - Google Patents

Description

The present invention relates to a base course paver for applying a compressed, even base layer or the like on a surface comprising a paver screed and a metering slide upstream of the paver screed, and also relates to a method for producing a compressed, uniform base layer or the like on one Substrate using a base course paver.

In modern road or track construction, it is known for the production of base layers, such as. B. hydraulic bound base layers (HGT layers), frost protection layers or sub-base layers, a base course paver too use how he z. B. from EP 0 335 339 A1 forming the preamble of claim 1 is. This base course paver includes a crawler track chassis and one on the front of the base course paver arranged vibrating board, which by a plurality of cylinder units in terms of their height and angular position of the base course paver is adjustable. To one to produce suitably compressed base course, it is at the well-known base layer paver possible, the vibrating screed floating control, i.e. their height position essentially by the generated by the material to be installed dynamic buoyancy is determined. Before the Vibrating screed is a movable in a lateral direction Distributor arm provided, which a rough distribution of the piled up and compressed in front of the base course paver Material.

However, especially when building track systems often the problem that the rail track by impassable Terrain must be performed, and that for the Construction of the track system required little space is available. The production of a base layer with the required base layer paver known from EP-A-0 335 339 however, that in addition to that already at each Construction site existing equipment such. B. excavator, Trucks and the like, an additional construction equipment in the limited space must be accommodated anyway. Further is used in some cases to create a base course this base layer paver an additional device (e.g. Side conveyor belt) to bring in the to be installed Material required which the z. B. on a truck material brought in from the truck unloads and on the ground in front of the base course paver distributed. This is the case, for example, if the Trucks only to the side of the layer to be manufactured can especially drive up to the prepared surface not to damage.

The known base course paver leads to considerable purchase or. Maintenance costs of an otherwise unusable Construction equipment, which in addition whenever a Base course is to be manufactured to the respective construction site transported and then again from this Construction site must be removed.

From DE-OS 20 64 180 is a combination of an excavator with a vibrator known. With this combination the vibrating device by one remaining on the superstructure of the excavator Section of the excavator arm applied to a sufficient Generate contact pressure against a surface. This however, causes the function of the excavator as such to be lost.

DE-OS 28 00 31 shows a bulldozer in which one a front dozer blade arranged as a suspension for additional units, such as B, a hydraulic power pack or the like is used.

It is the object of the present invention to provide a base course paver or a method for the production of base layers provide with which without the use of additional Devices a uniform base layer can be manufactured. According to the invention, this object is achieved by the one specified in claim 1 Base course paver or that specified in claim 32 Procedure solved.

Since in general at every track or road construction site anyway excavators for working the subsoil and Perform a variety of other tasks are, by providing a holding device on the Excavator, on which a Furtiger plank is then optional attachable or removable is kept simple Way a tool for shaking or manufacturing Base layers provided at the respective construction site become. The transport of an additional one

Base layer paver, which additional at the construction site Would take up space is no longer necessary.

The excavator arm already provided on the excavator can be used on the one hand used to make the paver screed from a Storage position, e.g. B. on a truck or on the edge the construction site, lift away and on the holding device to attach. On the other hand, the excavator arm with the am Excavator arm provided excavator bucket can be used the Z. B. brought about on a truck Lift material from the truck and pick it up the ground in front of the excavator and in front of the paver screed to distribute. An additional excavator, which this Unloading and distributing would have to do, and on top of that not compacted surface in front of the vibrating device should drive, is therefore not necessary. This is special therefore advantageous because of the tires of the additional Excavators in the prepared, but not yet compacted Imprints created the making of one level, evenly compacted base layer very difficult.

Because the excavator itself has a very high weight (up to 25 t), it is ensured that the paver screed with a very high pressure on the to be shaken Material rests, so that a good coupling for transmission the vibrations generated by the paver screed from the paver screed to the material to be compacted is ensured.

The paver screed can be part of a vibrating device , Which has a mounting base with hook sections on the Holding device can be hooked. It is therefore possible that the excavator driver automatically and without additional help Vibration device with the excavator arm lifts off the ground and by hooking the hook sections onto the holding device on the excavator determines what time is required until a jogger to manufacture a base layer is provided is reduced.

It is particularly advantageous if the first holding device one located on a front of the undercarriage Holding plate includes, and when on the vibrator a counter plate is provided which, when mounted Vibration device rests on the holding plate, whereby at least in the area of an upper edge of the counterplate a hook-like section is provided, which a Reaches over the top edge of the holding plate. The excavator driver thus needs when attaching the vibrator to the excavator the vibrator only with the help of the excavator arm so far towards the holding plate of the holding device move until the counter plate is in contact with the holding plate. Subsequent lowering of the vibrating device by means of of the excavator arm leads to the hooking of at least one hook-like section of the counterplate on the holding plate, whereby the vibrator is fixed on the excavator.

The counter plate can additionally by a plurality of Screw connections are attached to the holding plate, so that a displacement caused by external forces the jogger relative to the excavator is prevented above.

To ensure that the vibrating device is in any height position the vibrating device relative to the undercarriage the same inclination relative to the undercarriage and thus to Has floor, it is proposed that the vibrator with the counterplate by at least two in lateral Pairs arranged one above the other arranged swivel arms is connected, which in the area one of its ends is pivotally attached to the counterplate are and in the area of their other ends on the vibrating device are pivotally attached and a parallelogram provide for the vibrating device.

In an alternative embodiment, the holding device comprises at least two from a front of the Undercarriage extending forward, laterally from each other spaced support plates and one each on the support plates articulated via swivel connections, in front of the Undercarriage and the chassis in a direction transverse to Undercarriage extending vibrator support which the vibrator, i.e. the paver screed is attachable. All for Articulation of the vibrator on the excavator required Elements are thus firmly connected to the excavator, so that a particularly stable articulation of the vibrating device on Excavators can be provided. Furthermore, for transportation just remove the vibrator itself from the excavator, so that the separate transport of the excavator and the Vibrating device is facilitated.

It is advantageous if on the vibrating device carrier each assigned to the support plates on the undercarriage to be extended vertically and towards the undercarriage Carrier plates are provided, and the swivel connections one each on a lower section of the support plates and pivotable on a lower portion of the support plates attached lower swing arm include, and one an upper portion of the support plates and an upper one Section of the support plates pivotally attached upper Swivel arm, which is essentially parallel to the lower one Swivel arm is anodized and with this a parallelogram guide forms for the jogger carrier. The Parallelogram guidance of the jogger carrier and thus the paver screed ensures that when lifting or lowering the paver screed relative to Excavator and therefore not pivoted relative to the ground and therefore at all working heights with their total Work surface rests on the surface.

To raise and lower the paver screed, it is proposed that that each pivot connection also a first Cylinder unit includes, and that the first cylinder unit with one of its ends in the area of the articulation of the lower one Swivel arms on the support plate pivotally attached to this and with its other end on the upper swivel arm pivotable in the region of its articulation on the carrier plate is appropriate. The entire cylinder unit extends thus completely within the through the top and the lower pivot arm formed parallelogram, so that there are no components that are above the top Swivel arms or over the upper section of the support plates protrude. The rotating movement of one on the undercarriage arranged superstructure is thus by the holding device and does not affect the paver screed.

If the length of the jogger beam is transverse of the undercarriage less than or equal to the maximum Width of the undercarriage is ensured that none Components are present on the side of the undercarriage protrude so that a transport or moving the Carried out on public roads without any problems can be.

For coupling the paver screed to the vibrating device carrier it is proposed that in the range of Transverse direction of the undercarriage outer ends of the vibrator support Coupling elements for coupling the Vibration device carrier provided with the paver screed are. The linkage of the paver screed to the jogger beam is therefore as close as possible to the area the lateral ends of the paver screed provided so that through this on the vibrator carrier and the holding device transmitted torques be kept as low as possible.

In a further alternative embodiment of the holding device can this on the side surfaces of the chassis frame the swivel devices attached to the chassis include which can be firmly coupled to the paver screed are. Coupling the paver screed to the excavator each on the side of the undercarriage, i.e. outside the crawler tracks, allows a large reduction in the of the Paver screed transmitted torque to the undercarriage, especially around an axis of rotation parallel to the direction of travel, whereby a particularly stable coupling of the Paver screed is provided with the excavator. Also results easy access to the swivel devices for assembly and disassembly as well as maintenance work.

It is advantageous if the swivel devices each hinged to the chassis frame with one of its ends, vertically spaced upper and lower swing arms comprises, which in the region of its other ends with the Paver screeds can be permanently coupled to provide each Parallelogram guides for the paver screed. The Parallelogram guidance of the paver screed ensures that the paver screed in every swivel position same angular position relative to the excavator and thus relative to Occupies underground.

To lift the paver screed it is proposed that each of the swivel devices also has a first one Cylinder unit includes which with the upper or the lower swivel arm on the one hand and the chassis frame on the other hand to selectively raise and lower the Paver screed is coupled.

If the upper swing arm is in a transverse direction of the undercarriage is spaced further from the chassis frame than the lower swivel arm, and the first cylinder unit with the lower swivel arm is coupled, it is possible to To use cylinder unit, the overall length of which is sufficient Guaranteed stroke of the vibrator.

To make sure that the one through the first Cylinder unit can be applied through the lifting force transferred the swivel arm to the first cylinder unit The weight of the paver screed must not be exceeded and on the other hand by the swivel device and the first cylinder unit intended stroke of the paver screed sufficient for a large number of different companies is, it is proposed that the cylinder unit on upper or lower swivel arm in a middle section attacks him.

To the swivel devices with the upper and lower Swivel arms and the cylinder unit each simple and to be able to quickly attach to the chassis frame of the excavator, it is proposed that the upper and lower swivel arms each swivel device and the associated first cylinder unit each attachable to the chassis frame Mounting plate are pivotally mounted.

The angular position of the vibrating device relative to the undercarriage and thus to be able to adjust relative to the ground, and thus perform various types of vibrations can, it is proposed that the upper and / or the lower swivel arm is adjustable in length Setting the angular position of the paver screed relatively to the undercarriage.

The paver screed preferably comprises a vibrating screed with a vibrating plate and at least one vibrator; a first cylinder unit is also provided, by means of which the vertical Position of the vibrating screed adjustable relative to the excavator is. It is therefore not necessary to have one on the excavator To provide cylinder unit, which with mounted vibrator with this to adjust the vertical position the paver screed must be coupled. The paver screed thus represents an independent institution that can be quickly and easily mounted on the excavator and from Excavator can be dismantled and only minor structural changes required on the excavator.

If the vibrating plate with intermediate storage of rubber elastic Elements held on a frame of the vibrating plank is ensured that the by at least one Vibrators primarily generated vibrations on the Vibrating plate and not on the frame of the paver screed and transferred the excavator become, which makes the efficiency of the paver screed essential is improved.

In order to be able to produce a particularly uniform base layer, it is proposed that the metering slide in its vertical position relative to the paver screed is adjustable by a second cylinder unit, so that the one unloaded in front of the excavator or paver screed Material depending on the vertical position of the Metering slide gets dosed under the paver screed and a base layer with a uniform layer thickness and Density is generated.

An actuation of the first and second cylinder units and the at least one vibrator in a particularly simple manner Way is possible that the first and second Cylinder units and the at least one vibrator hydraulic are operable.

For this purpose, it is proposed that one on the superstructure of the excavator arranged excavator engine provided a power take-off shaft is, and that by the power take-off shaft on Hydraulic pump provided for the uppercarriage Actuation of the first and second cylinder units and the at least one vibrator can be driven. So it is no need to provide additional drive units on the excavator, so that the total cost of the invention Combination can be reduced.

Conventional excavators are generally unable to in a range of low speeds, i.e. in one Range from 1 to 3 m / min., With such a uniform speed to drive like this for the manufacture of Base layers is desired. The reason is that conventional excavators for higher driving speeds of For example, more than 3 km / h (50 m / min.) are designed. The oil pumps intended to operate the traction motors are adjustable in terms of their conveying capacity however, not uniform in the area of low delivery rates Give up the amount of oil, since it is already in the range of Leakage oil flow work. To eliminate this disadvantage it is proposed that the hydraulic pump be a triple pump is, with a pump part for actuating the first and second cylinder units, a pump part for Serves the drive of at least one vibrator, and a pump part serves to drive the chassis. So it's through appropriate design of the drive pump part for low Pump power using the on the excavator anyway provided engine possible, one for driving the Vehicle with very low and constant speed to supply a suitable amount of pump oil. In addition, by the same hydraulic pump the cylinder units and the be operated at least one vibrator, so that too no additional units are required for this.

Since the paver screed is preferably on a front of the undercarriage, it is suggested that Hydraulic line connections on the front of the superstructure to connect the hydraulic pump to the first and second cylinder unit and the at least one vibrator are provided, and that on the superstructure swivel angle limiting devices are provided to the swivel angle of the superstructure to a predetermined value. The provision of an additional rotating union through the slewing ring of the uppercarriage into the undercarriage thus eliminated. By providing the swivel angle limiting devices ensures that when turning damage to the uppercarriage on the undercarriage or a break in the hydraulic connections between the superstructure and the paver screed is prevented.

Alternatively, a hydraulic pressure line bushing can be in a slewing ring of the excavator be provided for performing of hydraulic pressure lines from the hydraulic pump to the first and second cylinder units. The application possibility of the device is possible through the 360 ° swivel angle clearly increased.

To be independent of the drive motor of the excavator, it is alternatively possible, a diesel unit on the undercarriage and a hydraulic pump driven by the diesel engine for actuating the first and second cylinder units and to provide at least one vibrator. It will this also means independence from the superstructure of the excavator reached so that this in the full rotation range of 360 ° can work.

In this case, it is advantageous if on a back of the undercarriage a second holding plate is provided is on which a support for the diesel engine and the Hydraulic pump with a counter plate and with a hook-like section an upper edge of the second suspension plate spreads. It is in turn possible that the Diesel unit to be attached to the undercarriage and the hydraulic pump to be attached to the excavator by means of the excavator arm and by to remove this again without additional auxiliary personnel is required, which in turn saves time and money is.

If the carrier is attached by at least one screw connection the second holding plate can be fixed, it is ensured that the wearer is exposed to strong shocks or force does not come off the excavator from the outside.

It is proposed that the hydraulic lines from the Hydraulic pump to the first and second cylinder unit and to the vibrator along the bottom of the undercarriage are guided to damage the hydraulic lines to avoid by the slewing ring or the superstructure.

Attaching the vibrator to the excavator using the Excavator arms are made considerably easier when the vibrators are on with coupling elements for optional coupling with the excavator arm is provided.

To the manufactured by the combination according to the invention Base layer as little as possible through subsequent driving to affect, it is proposed that the landing gear a crawler track chassis with two on each side of the Undercarriage provided caterpillar tracks.

Fig. 1

eine Seitenansicht des erfindungsgemäßen Tragschichtfertigers als Kombination eines Baggers mit einer Rütteleinrichtung;

Fig. 2

eine schematische Schnittansicht der Kombination entlang einer Linie II-II in Fig. 4;

Fig. 3

eine Schnittansicht der Rütteleinrichtung entlang einer Linie III-III in Fig. 4;

Fig. 4

eine Draufsicht auf die Kombination eines Baggers mit einer Rütteleinrichtung.

Fig. 5

eine der Fig. 2 entsprechende schematische Schnittansicht, wobei eine zweite Ausführungsform der Halteeinrichtung für die Rütteleinrichtung dargestellt ist;

Fig. 6

eine Ansicht des Unterwagens und der Halteeinrichtung der Fig. 5 von vorne;

Fig. 7

eine Draufsicht auf eine dritte bevorzugte Ausführungsform der ersten Halteeinrichtung; und

Fig. 8

eine Seitenansicht der ersten Halteinrichtung der dritten bevorzugten Ausführungsform.

The invention is described below using a preferred embodiment with reference to the accompanying drawings. It shows:

Fig. 1

a side view of the base course paver according to the invention as a combination of an excavator with a vibrating device;

Fig. 2

is a schematic sectional view of the combination along a line II-II in Fig. 4;

Fig. 3

a sectional view of the vibrator along a line III-III in Fig. 4;

Fig. 4

a plan view of the combination of an excavator with a vibrating device.

Fig. 5

2 shows a schematic sectional view corresponding to FIG. 2, a second embodiment of the holding device for the vibrating device being shown;

Fig. 6

a view of the undercarriage and the holding device of Figure 5 from the front.

Fig. 7

a plan view of a third preferred embodiment of the first holding device; and

Fig. 8

a side view of the first holding device of the third preferred embodiment.

1 shows an excavator, generally designated 10, which comprises an uppercarriage 12 and an undercarriage 14. The superstructure 12 is in itself on the undercarriage 14 known manner, e.g. B. by means of a slewing ring, rotatable stored. There is an excavator arm on the superstructure 12 of the excavator 10 16 provided, which a first on the superstructure 12 by arm section pivotable substantially horizontally 18 and also on the first arm section 18 pivotable about a substantially horizontal axis includes second arm portion 20. Arm sections 18 and 20 are by cylinder units known per se (here only one shown) movable.

At a free end 22 of the second arm section 20 an excavator bucket 24 is attached. The second arm section 20 has a rotating device 26, by means of which the part 28 of the second arm section connected to the blade 24 20 about a longitudinal axis of the second arm section 20 with respect to that pivotally held on the first arm section 18 Part 30 is rotatable through 360 °. Since the scoop 24 at the end 22 of the second arm section 20 in turn in a known manner about an essentially horizontal axis is pivotally held, the blade 24 through the Excavator drivers practically in any working position to be brought. Are on both sides of the undercarriage 14 Crawler chains 32 are provided which the undercarriage 31 of the Form excavators, and which by a (not shown) Engine of the excavator, which is arranged in the superstructure 12, are driven.

As shown in more detail in FIG. 2, the excavator 10 a vibrator 34 attached. For this purpose on a front side 36 of the undercarriage 14 by means of a The majority are in the longitudinal direction of the excavator or at an angle this extending support plate 38 has a holding plate 40 attached. The holding plate 40 extends essentially parallel to the front 36 of the undercarriage via essentially the entire width of the undercarriage between the crawler tracks 32. A counter plate 42 of the vibrating device 34 has in an upper end region 46 (see FIG. 3) a hook-shaped section 44, which is in the essentially over the entire width of the counterplate 42 extends. With the hook-shaped section 44 Mating plate 42 over an upper edge 48 of the holding plate 40 hanged so that the vibrator through the holding plate 40 is carried on the undercarriage 14 of the excavator 10.

The holding plate 40 and the counter plate 42 can additionally by screw connections 50, e.g. B. bolts together which are connected both in the holding plate 40 as well as openings formed in the counter plate 42 push through. An unwanted loosening of the vibrating device 34 from the excavator 10, e.g. B. by lifting the vibrator 34, can thus be prevented.

The vibrating device shown in more detail in FIG. 3 34 comprises a vibrating screed or paver screed known per se 52. On a frame section 54 of the vibrating plank 52 are laterally spaced from each other pairs of Support arms 56 and 58 one above the other to be substantially horizontal running axes with their first ends 64.65 pivotally fixed. The two arms 56 and 58 with their second ends 72, 73 are on the counter plate 42 respective carriers 60 and 62 also substantially horizontally extending axes held pivotable.

As can be seen in particular in FIG. 4, one of the laterally spaced upper and / or lower Arms 56,58 substantially A-shaped and has one from the end portion 64 of the support arm 56 with which the support arm 56 is pivotally attached to the vibrating plank is to be extended transversely towards the support structure lateral support arm 66. The side support arm 66 is with its free end 68 on a support 70 on the Counter plate 42 also about a substantially horizontal Axis pivotally fixed. Between the two on of the counter plate 42 are defined end portions 68 and 72 the side support arm 66 and the support arm 56 is a essentially transverse to the longitudinal direction of the excavator extending stabilizer 74 is provided, which both on lateral support arm 66 and welded to the support arm 56 is.

Through the upper and lower arms 56 and 58 is one Parallel guidance of the vibrating screed 52 in a height direction with respect to the excavator, which is provided by the side Support arm 66 and the stabilizer 74 against through lateral force caused displacements of the Vibrating screed is secured relative to the excavator, so that the Vibrating board 52 only in a vertical direction is movable.

At each of the lateral ends of the counter plate 42 is a Structure 76 is provided, the 78 in the region of its upper end carries a first cylinder unit 80. The first cylinder unit 80 is at its lower end 82 on the frame section 54 the vibrating plank 52 is pivotally fixed, so that by a Actuation of the cylinder unit 80, i.e. by pulling in or extending the piston rod 84, the vibrating plank 52 in can be raised and lowered substantially vertically.

The structure 76 comprises two arms 86 and 88, respectively existing, essentially rectangular support parts 89, which with an end portion 90 of arm 88 at the top Edge section 46 of the counter plate 42 is fixed. A opposite end portion 92 of arm 88 is through one extending substantially obliquely downwards Support arm 94 with a lower edge portion 96 of the counter plate 42 firmly connected and thus supports the structure 76 the counter plate 42. In addition, another extends Support arm 98 between end portion 90 of arm 88 and the upper end 78 of the arm 86 and thus serves additionally to stabilize the structure 76, since this at Raised screed 52 essentially the entire Weight of the vibrating board 52 carries, and in the lowered state the vibrating screed goes through essentially the whole the weight load of the excavator on the vibrating screed transfers transferred pressure.

Arranged at both lateral ends of the counter plate 42 Structures 76 are connected by a connecting element 77 firmly connected. The connecting element 77 is each fixed to the upper ends 78 of the arms 86. Furthermore, there is one on each structure 76 in the region of the ends 78 Tab 79 provided, which in a to be described Way for coupling to the excavator arm 16 is used.

The known vibrating screed includes a cross to Main frame extending longitudinal direction of the excavator, which essentially formed from two carrier parts 102 is that by a plurality of itself transverse to the support parts extending and on these z. B. by welding attached cross plates 105 are interconnected (s. Fig. 4). On the support part close to the counter plate 42 102, the frame section 54 is fixed, with which the two upper and lower arms 56 and 58, respectively are pivotally connected. About rubber-elastic damping elements 104 is a vibrating plate on the carrier parts 102 106 held. There are a plurality on the vibrating plate 106 attached by vibrators 108 (four in Fig. 4). The provision a plurality of equally spaced apart Vibrators 108 ensures that the entire width of the Vibrating plate 106 has sufficient vibration energy is transferred to the soil to be consolidated.

Furthermore, the vibrating plank 52 is located in the direction of manufacture in front of the vibrating plank 52 extending metering slide 110 provided. The metering slide 110 extends essentially over the entire width of the vibrating beam 52 and is on this with a plurality of laterally from each other spaced arms 112 substantially one horizontal axis pivotally fixed. The metering slide 110 is in its by means of a second cylinder unit 114 Height adjustable in relation to the vibrating plank 52. in the Operation of the vibrating screed 52 can thus be adjusted by Elevation of the metering slide 110 each a desired Amount of material to be installed under the vibrating plate 106 brought so that by appropriate adjustment of the The height of the metering slide is essentially flat Impact can be made with the desired thickness.

For actuating the first and second cylinder units 80 and 114 and that arranged on the vibrating plate 106 Vibrator 108 is also a diesel unit 116 on the undercarriage arranged (see Fig. 2 and 4). The diesel engine 116 can be formed integrally with a hydraulic pump 117, which is for actuating the first and second hydraulic units 80 and 114 and the vibrator 108 required supplies pressurized working fluid. This unit 116 with the hydraulic pump 117 can in a manner Undercarriage 14 may be attached, which is the attachment of the Vibration device 34 on the undercarriage corresponds. At the Back 118 of undercarriage 14 is a plurality of laterally spaced, in the longitudinal direction of the excavator 10 extending plates 120 are provided, which in turn carry a holding plate 122. A carrier 125 for the Diesel unit 116 and the hydraulic pump 117 comprises an im substantially horizontally arranged bottom part 124 which is the diesel unit 116 and the hydraulic pump 117 e.g. B. are determined by bolts, and one in essentially vertically arranged counter plate 126. At the Counter plate 126 are two at a lateral distance from one another Plate parts 128 are provided, which are essentially in Extend height direction of the counter plate 126 and at their upper ends each have hook-like sections 130. The sections 130 overlap an upper edge of the counterplate 122, so that the carrier is hung on the holding plate 122 is. The plate parts 130 are both on the counter plate 126 and on the bottom part 124 z. B. by welding fixed and thus increase the stability or rigidity of the carrier 125 for the diesel unit 116 and the Hydraulic pump 117. The counter plate 126 is again through a plurality of screw connections 132 to the holding plate 122 firmly connected, so that an unwanted loosening of the Carrier from the holding plate 122 is not possible.

The connecting lines (not shown) for feeding the pressurized hydraulic oil to the first and second Cylinder units 80,114 and to the vibrators 108 are passed along the bottom of the undercarriage 114 to a mutual interference with the superstructure 12 when turning the To avoid superstructure 12.

As an alternative to providing an additional diesel generator However, it is also possible to use the superstructure of the excavator to provide a power take-off shaft provided for the excavator engine, through which a hydraulic pump for actuating the first and second cylinder units and the vibrator is connected. Because when driving the excavator undercarriage a forward movement of the excavator with the excavator motor very low speeds, i.e. in the range from 1 to 3 m / min. due to the minimal delivery capacity of the hydraulic pumps and that occurring in the hydraulic pumps Leakage oil flow is often difficult to achieve, it can be useful by the PTO shaft Excavator motor driven hydraulic pump to be designed so that it has three pump areas, each for driving the first and second cylinder units, the vibrator or the excavator chassis. So it is possible without considerable conversion effort and without the provision of an additional Diesel genset both to operate the Vibrator required units as well Operate the chassis of the excavator. However, since in this Case, e.g. B. on a front of the superstructure, one Hydraulic line connection to the vibrating device provided must be, it is necessary to use swivel angle limiting devices to attach for the uppercarriage because the line connections the maximum rotation range of the Upper carriage on the undercarriage is restricted. To damage to avoid the line connections, the Swivel angle limiting devices set to values, the swiveling of the uppercarriage only in one allow allowable angular range.

As already mentioned, the structure of the vibrating device 76 34 tabs 79 attached, which for coupling the Serve vibrator 34 with the excavator arm. So it is possible that the excavator driver without further help the vibrator 34 z. B. takes off from a truck and attaches to the excavator 10. For this purpose you can use the excavator arm 16 or attached to the excavator bucket 24 steel hawser are, which are then each hung in the tabs 79 be so that the vibrator 34 by the excavator arm can be raised. Since two laterally spaced tabs 79 provided for attaching steel cables is a lateral tilting of the vibrating device 34 not possible. To attach the vibrator 34 on The excavator driver needs the excavator 10 by means of the steel cables vibrator coupled to the excavator arm 16 to conduct only in a position in which the Counter plate 42 abuts on the holding plate 40 and through subsequent lowering of the excavator arm 16 and thus the Vibrating device 34 is the vibrating device 34 with the hook-like section 44 of the counter plate 42 on the holding plate 40 hung.

To the jogger in a correct lateral Position on the excavator can on the counter plate and / or guide means known per se on the holding plate (not shown) can be provided, which when lowering the jogging device the counter plate, and thus the entire Vibrating device, in a correct lateral position bring with respect to the holding plate.

In the same way it is possible to attach tabs (not shown) on the support for the diesel engine and the Provide hydraulic pump so that this additional unit automatically by the excavator operator without additional help on Excavator attached and removed from this can.

5 and 6, a second is preferred in each case Embodiment of the holding device 152 for the vibrating device shown. The holding device 152 comprises each in pairs in a front section 154 of the 150 arranged support plates 156,158, wherein two pairs of such support plates 156, 158, 156 ', 158' on Undercarriage 150 is laterally spaced apart are, as can be seen in Fig. 6. Here are the couples of support plates 156, 158, 156 ', 158' each on the undercarriage 150 attached so that they are as close as possible to each Crawler track 160,162 lie to one if possible stable mounting of the vibrating device on the undercarriage 150 to ensure.

The support plates 156, 158, 156 ', 158' are, as in FIG. 5, too can be seen on the undercarriage 150, z. B. by welding or The like., Attached such that they with the undercarriage 150 extended sections 164,166 and thus a largest possible coupling area between support plates 156, 156 'and 158, 158' and undercarriage 150 form.

In an upper section 168 of the respective pairs of Carrier plates 156, 158, 156 ', 158' are each an upper one Swivel arm 170 around a substantially transverse to the undercarriage 150 extending pivot axis pivotally mounted. As can be seen in particular in FIG. 6, everyone is also the upper arms 170 each by two arm plates 172, 174 educated. A front end 176 of the upper swing arms 170 is in each case on a carrier plate 178, 178 'by a Bolt 182 also in the transverse direction of the Under carriage 150 extending axis pivotally mounted.

At a lower section 184 of the respective pairs of Carrier plates 156, 158, 156 ', 158' are each by a Bolt 186 a lower swivel arm 188 around a cross Undercarriage 150 axis pivotally mounted. According to the upper swivel arms 170, each one is also lower swivel arms 188 from two arm plates (in the Fig. not recognizable individually) and is in the range of one front end 190 on the respective carrier plate 178, 178 ' on a lower section 194 of the same pivotally mounted.

A cylinder unit 196, which in each pair of support plates 156, 158, 156 ', 158' is provided with a their ends also on the bolt 186 on which the lower arms 188 on the support plates 156, 158, 156 ', 158' are pivoted, pivoted, and is with its other end in the area of the front end 176 of the respective upper swing arm 170 by a bolt 198 pivotally attached. By actuating the cylinder unit 196, i.e. by changing the length of the cylinder unit 196, can do that through the upper and lower swivel arms 170.188 formed parallelogram are moved, so that in particular the height of the carrier plates 178, 178 ' can be changed relative to the undercarriage 150 without the angular position of the carrier plates 178, 178 'relative to Change undercarriage 150.

The carrier plates 178, 178 'are e.g. B. by welding or The like., fixed to a vibrator carrier 180. The vibrator carrier 180 extends in front of the Crawler tracks 160, 162 across to undercarriage 150. In the area from outer ends 200, 202 are on the vibrator carrier 180 pairs of suspension brackets 204, 206 each or 208,210 attached to which the vibrator by respective counter-tabs 212 (see FIG. 5) and bolts 214 is attachable.

In Fig. 5 is only one of the vibrating device Carrier part 216 shown, on each of which in one Corresponding pairs of tabs 204, 206 and 208, 210, respectively Section a tab carrier 218, e.g. B. by screwing or the like. is attached. The rest of the jogger is not in Fig. 5 for the sake of clarity of the drawing shown, but the vibrator corresponds to essentially that described with reference to FIGS. 1-4 Vibrating device.

The attachment of the bracket 218 by screws or The like. on the carrier part 216 has the advantage that when changing the length of the vibrating device across the undercarriage 150, e.g. B. by inserting intermediate elements, the link bracket 218 again in one of the pairs of Tabs 204, 206 and 208, 210 corresponding position at the Vibrating device can be attached.

The embodiment described with reference to FIGS. 5 and 6 the holding device 152 has the advantage that none protruding beyond the upper edge of the undercarriage 150 Components are available. Thus the movement or Freedom of rotation of an uppercarriage arranged on the undercarriage not restricted, and the superstructure can e.g. B. um Can be swiveled 180 ° backwards so that with the excavator also carried out work in the area behind the excavator can be. Because on the one hand the bearing points of the Vibration device carrier on the undercarriage as far as possible are shifted outside, i.e. as far as possible in the direction of Crawler tracks 160 and 162, and that on the other hand the Bearing points of the vibrating device on the vibrating device carrier 180 are as far out as possible, i.e. in the area of the outer ends 200, 202 of the vibrator support 180, is a stable holder for the vibrator ensured on the undercarriage 150. The of the Vibrating device transferred to the undercarriage 150 and the individual bearing points are torques kept as low as possible. Also disassembled Vibrating device no components available, which on the side protrude beyond the crawler tracks 160,162 of the excavator, so that for transporting the holding device 152nd equipped excavator no further precautions were taken must be dismantled or no components removed from the excavator Need to become. This reduces the assembly time of the vibrating device on the holding device 152 considerably.

With reference to FIGS. 7 and 8, a third will follow preferred embodiment of the holding device of the present Invention described. 7 is a plan view on a front section of a right crawler track chassis 240 shown, an upper part of the Caterpillar chain 242 has partially broken away. The crawler track chassis 240 runs on a chassis frame 244, which is firmly connected to the undercarriage of the excavator. At a outer side surface 246 of the chassis frame 244 is one Reinforcing plate 248 e.g. B. firmly attached by welding. On the reinforcement plate 248 is by a plurality A mounting plate 252 can be removed again from the bolt 250 fixed. On the mounting plate 252 are a upper swing arm 254 and a lower swing arm 256 each in the area of their first ends 258,260 by a essentially horizontal axis extending transversely to the undercarriage pivoted. For this purpose, as in particular can be seen in Fig. 8, on the mounting plate 252 a mounting base 262 for the upper swivel arm and a mounting base 264 for the lower swing arm appropriate.

In the area of the second ends 266, 268 of the upper swivel arm 254 and the lower swivel arm 256, these are with one a carrier part 270 or an otherwise not shown Vibration device fixed connecting plate 272 pivotally connected. On the connecting plate 272 are for the upper and lower swivel arms 254,256 Pairs of mounting plates 274 are provided. Between Fastening plates 274 and 276 are each an end section of the lower swivel arm 256 or the upper Swivel arms 254 arranged. A bolt 278 for the lower one Swivel arm and a bolt 280 for the upper swivel arm penetrates openings in the mounting plates 274 in each case or 276 and the lower swivel arm 256 or the upper Swivel arm 254 and thus provides a swivel connection between the swivel arms 254,256 and the vibrating device (not shown as a whole).

The connection of the connecting plate 272 to the carrier part 270 is, as in the embodiment of FIG. 5, respectively by means of angle elements 282 fixed on the carrier part 270 educated. Screw bolts penetrate 284 openings in the angle elements 282 and the connecting plate 272 and thus place the carrier part 270 on the connecting plate 272 firmly.

A cylinder unit is also on the mounting plate 252 286 via a cylinder carrier 288 with one of its parts, e.g. B. the cylinder part, pivotally mounted. With a other part, e.g. B. a piston rod part 290, is the Cylinder unit 286 with the lower swivel arm 256 swivel connected. As can be seen in particular in FIG. 7, For this purpose, the upper swivel arm 254 in the side Direction further from the mounting plate 252 and thus from Landing gear frame 244 spaced as the lower swing arm 256. Therefore, between the upper swing arm 254 and the Mounting plate 252 sufficient space for arranging the cylinder unit 286 provided.

The cylinder unit 286 is e.g. B. a hydraulic cylinder unit to raise and lower the by the swivel arms 254,256 and the connecting plate 272 provided parallelogram guide for the vibrating device. It is advantageous if, as shown in FIGS. 7 and 8, the Cylinder unit 286 in the area of a middle section 257 of the lower swivel arm 256 engages them. Consequently it is on the one hand ensured that the lifting of the Vibration device provided by the lower swivel arm 256 Leverage with load from the vibrator the force applied by cylinder unit 286 is not exceeds, and on the other hand that by the cylinder unit 286 intended lifting path through the total length of the lower swivel arm 256 is increased accordingly. The Cylinder unit 286 can have a correspondingly short overall length have so that they are not too far over the crawler 240 protrudes upwards and the pivoting movement of an uppercarriage mounted on the undercarriage.

For transporting the third device with the holding device preferred embodiment equipped excavator each provided on both sides of the undercarriage bolts 278 and 280 for the upper and lower swing arms loosened so that the connection of the upper and lower Swivel arms 254, 256 each with the connecting plate 272 and thus the vibrator is released. So it is ensures that no one is above the upper swivel arm laterally protruding components, e.g. B. the vibrating device, are connected to the excavator so that the total width the excavator a transport on public roads allowed.

As can also be seen in FIGS. 7 and 8, the upper swivel arm 254 in one of its end regions by Known screw elements are adjustable in length, so that when the vibrator is mounted on the excavator Angular position of the vibrating device adjustable relative to the excavator is.

The vibrating device, not shown in FIGS. 7 and 8 corresponds in structure to that with reference to the vibrating device described in FIGS. 1-4. Also those not shown in these figures or with reference to these figures not described supply of the cylinder unit 286 with hydraulic fluid essentially corresponds the supply of the cylinder units shown in FIGS. 1-4 for raising and lowering the vibrating device.

By combining an excavator with a jogger becomes an inexpensive option created for the production of base layers. There Roads or track construction sites always have excavators which for processing the subsurface and for a variety Other tasks can be used Excavator also by attaching a vibrating unit to it can be used to manufacture the base layers. To have to thus no additional construction equipment is provided, which then for the production of the base layers to the construction site must be transported and after finishing the work process be transported away from the construction site have to. The total cost of manufacturing such Base layer or the total construction costs as well as the maintenance costs of the construction equipment park are therefore significant decreased.

Also, no additional devices, such as. B. an additional Excavator that the material to be incorporated before Finishing the base course from a truck and this material is already spread on the ground, required what an additional cost reduction means.

Because of its high weight, it is in the invention Combination of excavators used to a very high pressure on the vibrator to work on the surface to be worked, so that with the combination according to the invention uniform and highly compressed Base layers can be produced.

Claims (32)

1. Road bed finisher for applying a compressed uniform road bed or similar onto a foundation base comprising a finisher beam (52) and a metering slide valve disposed in front of the finisher beam (52), characterised in that the road bed finisher comprises a combination of a digger (10) with an auxiliary device (34), whereby the digger (10) comprises a substructure (14; 150) with a travelling gear (31) and a superstructure (12) rotatably arranged on the substructure (14; 150), and whereby on the substructure a first holding means (38, 40; 152; 239) is provided, to which the auxiliary device (35) may be selectively attached and removed from this, whereby for application of the compressed uniform road bed or similar onto the foundation base a digger shovel (24) is arranged on the digger arm (16) and whereby the auxiliary device (34) comprises the finisher beam (52) and the metering slide valve (110) in such an arrangement that a material discharge region disposed in front of the metering slide valve (110) lies in the working range of the digger shovel (24).
2. Road bed finisher according to Claim 1, characterised by a vibrating means (34) comprising the finisher beam (52) with an assembly base (42) which may be coupled onto the holding means (38, 40) with hook sections (44).
3. Road bed finisher according to Claim 2, characterised in that the first holding means (38, 40) comprises a holding plate (40) arranged on the front side (36) of the substructure, and that a counter-plate (42), which abuts against the holding plate (40) when the vibrating means (34) is assembled, is provided on the vibrating means (34), and that at least one hook-like section (44) engaging over an upper edge (48) of the holding plate is provided in the region of an upper edge (46) of the counter-plate (42).
4. Road bed finisher according to Claim 2 or 3, characterised in that the counter-plate (42) may be fixed by a plurality of screw connections (50) to the holding plate (40).
5. Road bed finisher according to Claim 3 or 4, characterised in that the vibrating means (34) is connected to the counter-plate (42) by at least two pairs of swivel arms (56, 58), which are arranged one above the other and spaced laterally from one another and which are attached to swivel on the counter-plate in the region of one of their ends (72, 73) and in the region of their other ends (64, 65) to swivel on the vibrating means (34) and provide a parallelogram-type guide means for the vibrating means (34).
6. Road bed finisher according to Claim 1, characterised in that the first holding means comprises:

   at least two laterally spaced support plates (156, 156', 158, 158') extending forwards from a front side of the substructure (150),

   a vibrating means support (180), which is respectively articulated to the support plates (156, 156', 158, 158') via swivel joints, extends in front of the substructure (150) and the travelling gear (150, 162) in a direction transverse to the substructure (150), and to which the finisher beam may be selectively attached.
7. Road bed finisher according to Claim 6, characterised in that carrier plates (178, 178'), which are respectively allocated to the support plates (156, 156', 158, 158') on the substructure (150) and extend vertically and towards the substructure (150), provided on the vibrating means support (180), and that the swivel joints respectively comprise a lower swivel arm (188) attached to swivel on the lower section (184) of the support plates (156, 156', 158, 158') and on the lower section (194) of the carrier plates (178), and also an upper swivel arm (170) attached to swivel on the upper section (168) of the support plates (156) and on the upper section of the carrier plates (178), said upper swivel arm being arranged essentially parallel to the lower swivel arm (188) and with this forming a parallelogram-type guide means for the vibrating means (180).
8. Road bed finisher according to Claim 7, characterised in that each swivel joint additionally comprises a first cylinder unit (196), and that the first cylinder unit (196) is attached at one of its ends to the support plate (156) to swivel on this in the region of the articulation of the lower swivel arm (188), and at its other end is attached to the upper swivel arm (170) in the region of its articulation to swivel on the carrier plate (178).
9. Road bed finisher according to one of Claims 6 to 8, characterised in that the length of the vibrating means support (180) in the transverse direction of the substructure (150) is smaller than or equal to the maximum width of the substructure (150).
10. Road bed finisher according to one of Claims 6 to 9, characterised in that coupling elements (204, 206, 208, 210) are provided in the region of outer ends (200, 202) of the vibrating means support (180) in the transverse direction of the substructure (150) for fixed coupling of the vibrating means support (180) to the finisher beam.
11. Road bed finisher according to Claim 1, characterised in that the first holding means comprises swivel means, which are attached respectively on the side faces (246) of the travelling gear frame (244) of the travelling gear facing away from the substructure (150), and which may be selectively coupled firmly to the finisher beam.
12. Road bed finisher according to Claim 11, characterised in that the swivel means comprise upper (254) and lower (256) swivel arms (254, 256), which are respectively articulated to the travelling gear frame (244) at one of their ends and are spaced vertically from one another, and which may be selectively coupled firmly to the finisher beam in the region of their other ends to provide respective parallelogram-type guide means for the finisher beam.
13. Road bed finisher according to Claim 12, characterised in that additionally each of the swivel means respectively comprises a first cylinder unit (286), which is coupled to the upper or the lower swivel arm (254, 256), on the one hand, and to the travelling gear frame (244), on the other hand, for selective raising and lowering of the finisher beam.
14. Road bed finisher according to Claim 13, characterised in that the upper swivel arm (254) is spaced further from the travelling gear frame (244) in a transverse direction of the substructure than the lower swivel arm (256), and that the first cylinder unit (286) is coupled to the lower swivel arm (256).
15. Road bed finisher according to Claim 13 or 14, characterised in that the cylinder unit (286) acts on the upper or lower swivel arm (254, 256) in a central section (257) thereof.
16. Road bed finisher according to Claim 13, 14 or 15, characterised in that the upper or lower swivel arm (254, 256) of each swivel means as well as the associated first cylinder unit (286) are respectively disposed to swivel on an assembly plate (252) which may be attached to the travelling gear frame (244).
17. Road bed finisher according to one of Claims 15 to 16, characterised in that the upper and/or the lower swivel arm (254, 256) is/are adjustable for adjustment of the angle position of the finisher beam relative to the substructure.
18. Road bed finisher according to one of the preceding claims, characterised in that the finisher beam (52) comprises a vibrating beam (52) with a vibrator plate (106) and at least one vibrator (108), and that a first cylinder unit (80) is provided, by means of which the vertical position of the vibrating beam (52) relative to the digger (10) is adjustable.
19. Road bed finisher according to Claim 18, characterised in that the vibrator plate (106) is held on a frame (102) of the vibrating beam (52) with rubber-elastic elements (104) interposed.
20. Road bed finisher according to Claim 18 or 19, characterised in that the metering slide valve (110) may be adjusted in its vertical position relative to the finisher beam (52) by a second cylinder unit (114).
21. Road bed finisher according to Claim 20, characterised in that the first and second cylinder units (80, 114) as well as the at least one vibrator (108) may be operated hydraulically.
22. Road bed finisher according to Claim 21, characterised in that a secondary drive shaft is provided on a digger motor arranged on the superstructure of the digger, and that a hydraulic pump may be driven by the secondary drive shaft for hydraulic operation of the first and second cylinder units and the at least one vibrator (108).
23. Road bed finisher according to Claim 22, characterised in that the hydraulic pump is a triple pump, whereby one pump part serves to operate the first and second cylinder units, one pump part serves to drive the at least one vibrator, and one pump part serves to drive the travelling gear.
24. Road bed finisher according to Claim 22 or 23, characterised in that hydraulic line connections are provided on a front side of the superstructure to connect the hydraulic pump to the first and second cylinder unit and the at least one vibrator, and that swivel angle restriction means are provided on the superstructure in order to restrict the swivel angle of the superstructure to a predetermined value.
25. Road bed finisher according to Claim 22 or 23, characterised in that a hydraulic pressure line passage is provided in a slewing crown of the digger for guidance of hydraulic pressure lines from the hydraulic pump to the first and second cylinder units.
26. Road bed finisher according to Claim 21, characterised in that a diesel aggregate (116) and a hydraulic pump (117) driven by the diesel aggregate (116) are provided on the substructure (14) for operation of the first and second cylinder units (80, 114) and the at least one vibrator (108).
27. Road bed finisher according to Claim 22, characterised in that on a rear side (118) of the substructure (14) a second holding plate (122) is provided, against which a support (125) for the diesel aggregate (116) and the hydraulic pump (117) with a counter-plate (126) abuts, and an upper edge of the second coupling plate (122) has a hook-type section (130) engaging over it.
28. Road bed finisher according to Claim 27, characterised in that the support (125) may be fixed to the second holding plate (122) by at least one screw connection (132).
29. Road bed finisher according to Claim 27 or 28, characterised in that the hydraulic lines are directed from the hydraulic pump to the first and second cylinder unit (80, 114) and to the vibrator (108) respectively along the underside of the substructure (14).
30. Road bed finisher according to one of Claims 2 to 29, characterised in that the vibrating means (34) is provided with coupling elements (79) for selective coupling to the digger arm (16).
31. Road bed finisher according to one of the preceding claims, characterised in that the travelling gear (31) comprises a caterpillar track travelling gear (32; 160, 162; 242) with two caterpillar tracks respectively provided on the sides of the substructure (14; 150).
32. Process for the production of a compressed uniform road bed or similar on a foundation base by means of a road bed finisher, comprising a digger (10), which is constructed with a substructure (14; 150) with travelling gear (31) and a superstructure (12) rotatably disposed on the substructure (14; 140) with digger arm (16) and digger shovel (24), and which is additionally provided with a finisher beam (52) attached to the substructure (14; 150) and a metering slide valve (110) disposed in front of the finisher beam (52), comprising the steps:

    a) unloading the road bed material in a material discharge region in front of the metering slide valve,

    b) distributing the road bed material in front of the metering slide valve (110) by means of the digger shovel (24),

    c) metering the material by means of the metering slide valve (110) and compressing the material by means of the finisher beam (52) during a forward movement of the digger (10) towards the unloaded and distributed road bed material.

Images