EP1619314A1 - mobile excavator - Google Patents

Abstract

Mobile digger has at least one wheeled chassis or dolly coupled to it in front, behind, beside or underneath. Said chassis is flange-connected with springs to lock instantaneously. It has either a central or off-centre axis of single or double manufacture. Its wheels are fitted with a brake and its spring-mounted wheels and axles are turnable. It has a receptacle to carry tools and appliances and is connected using other parts to an undercarriage.

Description

The invention relates to a wheeled excavator with an undercarriage with at least two axes.

Wheeled excavators are equipped as wheeled vehicles and usually have two axes. Thus, they are roadworthy and can drive independently and independently to their place of use.

In Germany, however, the axle load of wheeled excavators to obtain an unrestricted - that is not track bound - driving license is limited within the framework of the Highway Code. For driven axles, the maximum axle load is currently 11.5 t and for non-driven axles 10 t. The maximum excavator weight for road driving is limited to 18 t with two axles.

The object of the invention is to provide a wheeled excavator, which can be admitted to road travel on public roads, even at higher dead weight.

According to the invention, this object is achieved in that on the wheeled excavator (lower or upper carriage) at least one trolley or dolly is firmly flanged and / or coupled. This trolley or Dolly has at least one further axis, so that in addition to the two axle lines of the usual wheeled excavator at least one or any number of axle lines on the firmly connected to the wheeled excavator dolly or dolly. Depending on the number of newly created axle lines, the wheeled excavator with a total weight of over 18 t can be operated on public transport routes.

Particularly advantageous embodiments of the invention will become apparent from the subsequent claims to the main claim.

Accordingly, the at least one trolley can be flanged torque-rigid and / or coupled. It is thus a firm connection between the wheeled excavator and the trolley generated, so that here distributed the load of the wheeled excavator in the same way on the correspondingly provided axes of the undercarriage or trolley. After the appropriate road transport, the couplable trolley can be removed for use on the construction site, to be flanged again for the next road transport.

Optionally, the at least one trolley can also be flanged over a prestressed spring package.

The at least one trolley can be arranged at any point of the wheeled excavator. Thus, it can be arranged on the front of the undercarriage, on the rear of the undercarriage, on one or both sides of the undercarriage and / or below the undercarriage and be attached thereto. Of course, several trolleys can be fastened simultaneously to the undercarriage within the scope of the invention in order to achieve an optimized axle load distribution.

In the context of the invention, the trolley can advantageously have at least one centrally arranged axle line with single tires or twin tires.

Alternatively, the trolley may have at least one axle line with two eccentrically arranged single or twin tires. For larger mounted trolleys wheels arranged on the trolley can be equipped with a brake. The wheels arranged on the trolley can also be steerable. Finally, arranged on the trolley wheels can be suspended suspended.

Furthermore, the axle (s) arranged on the trolley can be liftable.

It is particularly advantageous on the at least one trolley additionally a receiving device for receiving and transporting attachments, tools and the like available.

Furthermore, a receiving device (bracket or counterpart to the quick-change adapter) can be attached for better handling.

According to a further advantageous embodiment of the invention, the at least one trolley can be connected via other attachments, such as the support plate, with the undercarriage.

The trolley may also be attached to the wheeled excavator via equipment such as the shovel attached to the handle. Here, the trolley can be designed in the form of a support wheel. The Achslastreduktion takes place here in that a part of the equipment weight rests on this jockey wheel or the trolley. The lifting cylinder of the equipment can be switched for the transport version with the support on the trolley in a floating position. This compensation is possible even on uneven ground.

Figur 1:

eine schematische Seitenansicht eines Mobilbaggers mit verschiedenen Anbauversionen eines Rollwagens, wobei die Anzahl der am Unterwagen gekoppelten Achslinien schematisch dargestellt sind,

Figur 2:

eine Darstellung, in der die verschiedenen Anbauversionen schematisch von oben gezeigt sind, wobei einige mögliche Achsausführungen für einen 1-achsigen am Unterwagen gekoppelten Rollwagen dargestellt sind,

Figur 3:

andere Ausführungsvarianten eines erfindungsgemäßen Mobilbaggers, wobei exemplarisch einige Achsausführungen für einen 2-achsigen Rollwagen am Unterwagen gekoppelt sind,

Figur.4:

eine schematische Seitenansicht eines Mobilbaggers mit verschiedenen Anbauversionen eines Rollwagens, wobei die Anzahl der am Oberwagen gekoppelten Achslinien schematisch dargestellt sind,

Figur 5:

eine Darstellung, in der die verschiedenen Anbauversionen schematisch von oben gezeigt sind, wobei einige mögliche Achsausführungen für einen 1-achsigen am Oberwagen gekoppelten Rollwagen dargestellt sind,

Figur 6:

andere Ausführungsvarianten eines erfindungsgemäßen Mobilbaggers, wobei exemplarisch einige Achsausführungen für einen 2-achsigen Rollwagen am Oberwagen gekoppelt sind und

Figur 7:

eine weitere schematische Seitenansicht eines Mobilbaggers mit einer alternativen Anbauversionen eines Rollwagens

Further details and advantages of the invention will become apparent from an embodiment shown in the drawing. Show it:

FIG. 1:

a schematic side view of a wheeled excavator with different versions of a rolling carriage, wherein the number of coupled to the undercarriage axle lines are shown schematically,

FIG. 2:

a representation in which the various versions are shown schematically from above, with some possible axle versions are shown for a 1-axis coupled to the undercarriage trolley,

FIG. 3:

other embodiments of a wheeled excavator according to the invention, with some axle designs for a 2-axle trolley being coupled by way of example to the undercarriage,

Figur.4:

a schematic side view of a wheeled excavator with various versions of a rolling carriage, wherein the number of coupled to the superstructure axle lines are shown schematically,

FIG. 5:

a representation in which the various mounted versions are shown schematically from above, with some possible axle designs are shown for a 1-axle coupled to the uppercarriage trolley,

FIG. 6:

Other embodiments of a mobile excavator according to the invention, with some axle designs for a 2-axle trolley are coupled by way of example on the superstructure and

FIG. 7:

a further schematic side view of a wheeled excavator with an alternative mounted versions of a trolley

In the figure 1, a wheeled excavator 10 is shown schematically. On the undercarriage 12 of the wheeled excavator 10, two axle lines 14 and 16 are provided.

In the illustrations of Figure 1 a, b, c and d different versions of trolley or Dollys 18 are shown, which can be exemplarily connected to the undercarriage 12 here. The type of connection between the trolley 18 and the wheeled excavator 10 is not shown here in detail. In principle, the trolley can be flange-mounted torque-resistant. However, it can also be flanged over a prestressed spring package. The trolley must not attack directly on the undercarriage 12. It can also be a here, for example, not shown support plate or other attachments of the undercarriage with this Connected.

In the figure, a simple version is shown in which by means of the trolley 18, an axis line is shown with a centrally located wheel with single tires. In the embodiment according to FIG. 1b, a trolley with centrally arranged axle line with twin tires is shown, wherein in the illustration according to FIG. 1b also an additional second trolley 20 arranged at the front end of the undercarriage is shown with twin tires. Thus, the wheeled excavator according to Figure 1 b is equipped with four axle lines.

In the illustration according to Figure 1 c, the attached trolley 18 is equipped with two axle lines, which is flanged on the rear of the undercarriage 12 of the wheeled excavator. So here are four axle lines realized.

In the embodiment according to FIG. 1d, in addition to an arrangement of a trolley 18 with two axle lines, a trolley with an axle line is also arranged in the front part of the undercarriage.

In Figure 2 variants of a wheeled excavator according to Figure 1a are shown in plan view. Here, the wheeled excavator 10 is shown with undercarriage 12 and a rear of the undercarriage 12 mounted trolley 18 with an axis line in different variants. In FIG. 2 a, the axis line has a central single tire. In the illustration according to FIG. 2b, the axial line has a central twin tire on. In the illustration according to FIG. 2c, the axis line of the additional trolley 18 has an eccentric arrangement of two single tires, and in the illustration according to FIG. 2d, the axis line has an off-center arrangement of two twin axes.

In the figure 3, a wheeled excavator 10 is shown with undercarriage 12, on which at the rear of the undercarriage 12, a trolley 18 is arranged with two axle lines. Here again in the figure 3a a trolley 18 is shown with two consecutively centrally arranged single tires. In FIG. 3b, centrally arranged twin tires are provided on the two axle lines instead of the single tires of FIG. 3a. In the figure 3c each two eccentrically arranged single tires and in the figure 3d each two eccentrically arranged twin tires are provided.

Figures 1 to 3 show here only some variants of the possible mounting versions for trolley in the context of the present invention.

In FIG. 4, in turn, a wheeled excavator 10 is shown schematically. On the undercarriage 12 of the wheeled excavator 10, two axle lines 14 and 16 are provided.

In the illustrations of Figures 4a, 4b, 4c and 4d different versions of trolley or Dollys 18 are shown, which are connected here via a support 28 with the uppercarriage 13. The structure and the wheel arrangement of the respective trolleys 18 essentially correspond to those according to FIGS. 1 a to 1 d and 2 a to 2 d, as is apparent from a comparison of FIGS. 4 a to 4 d and 5 a to 5 d with the aforementioned figures. In the embodiment according to FIG. 4b, in the front region of the wheeled excavator 10 there is a trolley 20 above the equipment, which in the present case comprises an excavator bucket 24.

FIG. 6 shows a variant of the wheeled excavator according to FIG. 3, the difference here also being that the rolling carriage is now mounted on the uppercarriage 13.

Finally, FIG. 7 shows an embodiment in which the wheeled excavator 10 has a support wheel 21 which supports the equipment, here in the form of an excavator bucket 30. Thus, part of the equipment weight rests on the jockey wheel. In this embodiment, the lifting cylinder of the support wheel is set to floating position, so that a compensation even on uneven ground is possible.

Claims (14)

Wheeled excavator with an undercarriage with at least two axles,
characterized,
that at least one trolley is coupled coupled to the wheeled excavator. Wheeled excavator according to claim 1, characterized in that the at least one trolley is flanged torque-rigid. Wheeled excavator according to claim 1, characterized in that the at least one trolley is resiliently flanged. Wheeled excavator according to one of the preceding claims, characterized in that the at least one trolley front, rear, is arranged on one or both sides and / or under the wheeled excavator. Wheeled excavator according to one of claims 1 to 4, characterized in that the trolley has at least one centrally arranged axle line with single tires or twin tires. Wheeled excavator according to one of the preceding claims, characterized in that the trolley has at least one axle line with two eccentrically arranged single or twin tires. Wheeled excavator according to one of the preceding claims, characterized in that arranged on the trolley wheels are equipped with a brake. Wheeled excavator according to one of the preceding claims, characterized in that arranged on the trolley wheels or axles are steerable. Wheeled excavator according to one of the preceding claims, characterized in that the arranged on the trolley wheels or axles are sprung. Wheeled excavator according to one of the preceding claims, characterized in that on the at least one trolley additionally a receiving device for receiving and transporting implements, tools and the like are present. Wheeled excavator according to one of the preceding claims, characterized in that the at least one trolley on other attachments, such as the support or planer or Abstützbalken, is connected to the undercarriage. Wheeled excavator according to one of the preceding claims, characterized in that one or more wheels / axles are liftable. Wheeled excavator according to one of the preceding claims, characterized in that the receptacle for SWA or bracket is provided for better handling on the trolley. Wheeled excavator according to one of the preceding claims, characterized in that the trolley is attached to the wheeled excavator via the equipment, for example the bucket,

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