EP1077306B1 - Mobile work apparatus - Google Patents

Description

The invention relates to a mobile driving device according to the preamble of claim 1.

Such a mobile working device is disclosed in DE-A-195 14 288. In him an intermediate link, which supports the leader on a neck support and a shoe part at spaced locations, pivotally mounted on a boom, which in turn is pivotally mounted on the upper carriage of the chassis. A first hydraulic cylinder serves to adjust the inclination of the boom, a second hydraulic cylinder, which is pivotally supported on the superstructure at a point adjacent to the deflector support point, serves to change the inclination of the intermediate link with respect to the boom.

A similar support mechanism for a leader is also known from DE-A-3905 996.

EP 0 680 923 A1 relates to a forklift in which a telescopically extendable support arm carries the fork via a parallelogram linkage. Fork and parallelogram linkage form a sub-unit which is connected via a releasable bolt connection with the end of the support arm.

Another driving device is disclosed in EP-A-0 861 967 A2. For him, the broker, who in practice may have high heights (20 to 40 m), from a vertical working position to a horizontal before Chassis lying mounting position are folded down and removed in this to transport the implement. The chassis, which has significantly lower weight and smaller dimensions than the working implement can then be transported by road or by rail to another location.

In US 3 181 623 a drill is described, which is suitable for both vertical drilling, oblique drilling and for horizontal drilling. For this purpose, a drill head movably carrying leader is connected via a support mechanism with a chassis. The support mechanism comprises a base part, which in turn is pivotally mounted on the chassis and which supports one ends of support arms whose second ends articulated carry an intermediate link. On this a leader leading the thrust is pivotally mounted by a hydraulic cylinder. The support arms are parallel and perpendicular to the longitudinal center plane of the chassis pivotable to approach lying in front of or adjacent to the chassis borehole axes. The support arms can also assume a parallelogram geometry to produce running in the same direction spaced boreholes.

For some applications, it would be desirable if you could move the broker from the vertical working position not only forward for dismantling but also to the rear, so that it is projecting forward and back over the chassis over the chassis. In such a position, a not too long broker on roads and rails that have not too sharp curves or similar obstacles can still be transported without disassembling the broker. This saves assembly times.

By the present invention, a working device according to the preamble of claim 1 is to be developed so that the broker can be folded either forward or backward.

This object is achieved by a mobile working device with the features specified in claim 1.

Advantageous developments of the invention are specified in subclaims.

The development of the invention according to claim 2 is characterized by a particularly robust and mechanically simple construction of the strut designed as a support arm.

According to the embodiment of the invention according to claim 3 ensures that you need to solve for moving the Mäklers no mechanical interlocks. Also, one can effect the transition of the linkage assembly from a substantially parallelogram linkage arrangement, which is advantageous for positional changes of the workable substantially vertically oriented leader, to a trapezoidal linkage assembly which is advantageous for transferring, and thus influence the path which each of the brokers is allocated.

The development of the invention according to claim 4 ensures a simple way of locking the support arm assembly in the particular desired geometry.

The development of the invention according to claim 5 is in view of a simple dismantling of the leader of the chassis and easy re-attaching the leader on the chassis of advantage.

Claim 6 are preferred length ratios for the various links and the location of the various pivot bearing the leader support mechanism again.

Claim 7 is in terms of low overall height of the implement in the transport configuration of advantage.

In a working device according to claim 8, you can also reduce the leader from the chassis when it is folded backwards, or grow on this so that it can be erected after cultivation from the back up.

Figur 1:

eine seitliche Ansicht eines fahrbaren Arbeitsgerätes, wobei ein Mäkler desselben in seiner vertikalen Arbeitsstellung wiedergegeben ist;

Figur 2:

eine seitliche Ansicht des fahrbaren Arbeitsgerätes nach Figur 1, wobei der Mäkler in einer vor einem Fahrgestell des Arbeitsgerätes liegenden Montagestellung wiedergegeben ist, in welcher er im wesentlichen horizontal verläuft;

Figur 3:

eine ähnliche Ansicht wie Figur 2, wobei jedoch der Mäkler in vom Fahrgestell abgebautem Zustand wiedergegeben ist;

Figur 4:

eine seitliche Ansicht des fahrbaren Arbeitsgerätes nach Figur 1, wobei der Mäkler nun in einer nach hinten abgeklappten horizontalen Transportstellung wiedergegeben ist; und

Figur 5:

eine ähnliche Ansicht wie Figur 4, in welcher der Mäkler zur Gewichtsverringerung und wei-Reduzierung des Platzbedarfes des Arbeitsgerätes bei Transporten durch eine Hebezeug abgehoben ist.

The invention will be explained in more detail by means of exemplary embodiments with reference to the drawing. In this show:

FIG. 1:

a side view of a mobile working device, a leader of the same is reproduced in its vertical working position;

FIG. 2:

a side view of the mobile working device of Figure 1, wherein the broker is reproduced in a lying in front of a chassis of the implement mounting position in which it extends substantially horizontally;

FIG. 3:

a view similar to Figure 2, but the broker is reproduced in dismantled from the chassis state;

FIG. 4:

a side view of the mobile working device of Figure 1, the broker is now shown in a folded back to the horizontal transport position; and

FIG. 5:

a view similar to Figure 4, in which the broker is lifted to reduce weight and wei-reducing the footprint of the implement during transport through a hoist.

Referring to Figure 1, there is shown generally at 10 a chassis for a mobile work implement (e.g., piling or drilling rig) having a track drive 12 and an uppercarriage 14 rotatably supported therefrom.

The chassis 10 carries on a generally designated 16 support mechanism a broker 18. This carries in working equipment a drilling device, a piling device or the like. (Not shown in the drawing), which is movable along the leader 18.

The support mechanism 16 comprises a first support arm 20 which has a fixed length and is articulated at one end via a first pivot bearing 22 with a lower central front portion of the upper carriage 14. A second support arm 24 is designed as a hydraulic working cylinder and is connected with its vehicle-side end via a further first pivot bearing 26 with the upper middle front region of the front side of the upper carriage 14. Thus, the first support arm 20 and the second support arm 24 extend in a plane which is behind a driver's cab 28 of the chassis 10, as indicated by dashed lines for parts of the support arm.

The second ends of the two support arms 20, 24 are connected via second pivot bearing 30, 32 with a generally designated 34 intermediate link. This comprises two intermediate link parts 36, 38, which via a detachable Clutch are connected to each other, which in the illustrated embodiment, as shown in particular in Figures 2 and 3, a clutch member 36 carried by the hook-shaped coupling nose 40 and a spaced therefrom coupling opening 42 of the first intermediate link part 36 comprises. The coupling nose 40 cooperates with a coupling pin 44 which is arranged on the second intermediate link part 38. If the coupling nose 40 engages the coupling pin 44, then the coupling opening 42 is aligned with a coupling opening 46 which is formed in the second intermediate link part 38. Through the two coupling openings 42, 46, a coupling pin 48 is inserted when attached broker, as shown in Figures 2 and 4.

The intermediate link part 36 is hingedly connected to the broker 18 via a third pivot bearing 50. The intermediate link part 38 further carries, via a fourth pivot bearing 52, the lower end of a neck support 54 (or a neck support pair, one of which is to be considered in front of the drawing plane, the other behind the drawing plane). The upper end of the piston rod of the neck support 54 is also connected via a fifth rotary bearing 56 with the broker.

At the upper end of the Mäklers 18 a Mäklerkopfsegment 58 is provided which carries deflecting pulleys 60, 62 for unplayed wire ropes, which are actuated via a set of winders 64 which is provided on the back of the Mäklers 18. These wire ropes are used to move different loads, in particular for handling boring bars and drill pipes and for moving a drilling table. In a piling device they can be used to move the bear and to handle piles such as piles and sheetpiles.

The Mäklerkopfsegment 58 is connected via a hinge 66 with the broker 18 so that it can be moved from the aligned in the working position shown in Figures 1 to 3 in a folded-down transport position, which is shown in Figure 4. In this way, the height of the implement is reduced in the transport position. To hold the Mäklerkopfsegmentes 58 in its working position this is secured by a pin 68 at the upper end of the Mäklers 18 which cooperates with a dome opening 70 of the Mäklers 18 and a dome opening 72 of Mäklerkopfsegmentes 58, which are provided in Figure 4 with reference numerals.

The hydraulic working cylinder forming the second support arm 24 can be connected with its working spaces via a 4/3 solenoid valve 74 optionally with a pressure line 76 or a return line 78. In a middle position of the solenoid valve 74, the hydraulic cylinder is locked.

Another hydraulic power cylinder 80, which is connected via hinges 82, 84 with a widened end portion of the support arm 20 and the intermediate link 34. Its two working spaces can be connected via a further 4/3-way solenoid valve 86 to the pressure line 76 and the return line 78. The working cylinder 80 serves to pivot the linkage formed by the two support arms 20, 24. If the working cylinder 80 is pressurized in the sense of extending its piston rod, the two support arms 20, 24 pivot counterclockwise. If the working cylinder 80 is retracted, the support arms 20, 24 pivot in the clockwise direction.

If you drive the second support arm 24 forming hydraulic Working cylinder off, the leader 18 is additionally pivoted counterclockwise, where he transferred the support arm 20, 24 from the occupied in the working position of the implement geometry, which corresponds essentially to that of a parallelogram linkage, in a trapezoidal geometry.

The same applies to the neck support 54 forming hydraulic working cylinder, which is connected via a further 4/3-way solenoid valve 88 to the pressure line 76 and the return line 78.

The counterclockwise rotational movement of the leader 18 between the assembly position shown in FIG. 1 and in FIGS. 2 and 3 thus takes place by addition of three rotational movements caused by extension of the second support arm 24, by extension of the neck support 54 and by extension of the working cylinder 80 are obtained.

Analog shares are obtained for pivoting the leader 18 by 90 ° in the clockwise direction in the transport position shown in Figure 4 by the retraction of the second support arm 24, the retraction of the neck support 54 and the retraction of the working cylinder 80th

The Mäkler support mechanism 16 described in detail above thus allows the depositing of the carrier both in front of the chassis 10 and the transfer of the leader 18 in a lying on the chassis 10 transport position. The support mechanism has a compact overall design and can also serve to specify oblique working position of the leader, as it is needed, for example, to produce oblique holes.

The transfer of the leader 18 from the vertical working position in the horizontal mounting position or the horizontal transport position can be carried out without operator would have to solve connections on the broker.

In the horizontal transport position shown in Figure 4, the broker 18 can be removed upward to further reduce weight and space requirements of the implement for transport to another site.

For this purpose, two cable openings 90, 92 are provided in the leader around its center of gravity. Through this, as shown in Figure 5, a support cable 94 can be pulled through, which can be attached to a hook 96, which in turn is held by a hoist rope 98 of a suitable hoist (crane or the like.).

In the above-described mobile working device, therefore, the broker 18 can be removed or mounted folded forwards or backwards (FIG. 3 or FIG. 5), as is the most favorable with regard to the respective space available.

In a modified embodiment, not shown, the second support arm 24 is formed as a telescoping in a different position telescopic strut.

In a further embodiment, not shown, the longer variable support arm 24 is formed by a mechanical parallel connection of a double-acting hydraulic cylinder and a detachable telescopic strut. In this way, the second support arm 24 can be mechanically locked in its various positions.

The working device described above is characterized by the following length ratios of the support mechanism 16 with respect to the length of the first support arm 22: Length of the first support arm 100% Length of the second support arm between about 100% and about 180% Length of the neck restraint assembly between about 90% and about 160% Distance of the 1st pivot bearing about 50% Distance of the 2nd pivot bearing about 50% Distance between 3rd and 4th pivot about 50% Distance between the 3rd pivot bearing and the lower end of the leader about 160%

Claims (11)

1. A travelling working apparatus comprising a travelling chassis (10), comprising a leader (18) which is carried via a carrying mechanism (16) so as to be displaceable between a substantially vertical working position and a substantially horizontal assembly position, the carrying mechanism (16) having two carrying guide arms (20, 24) located at a distance from one another, first ends of which are connected via first pivot bearings (22, 26) arranged at a distance from one another to the travelling chassis (10), a second end of a second (24) of the carrying guide arms (20, 24) being connected to an intermediated guide arm (34) via a second pivot bearing (32) the intermediated guide arm (34) being connected to the leader (18) via a third pivot bearing (50) and carrying a neck support arrangement (54) via a fourth pivot bearing (52) which neck-support arrangement acts on the leader (18) via a fifth pivot bearing (56) arranged at the free end thereof an being spaced from the third pivot bearing (50), wherein at least one (24) of the two carrying guide arms (20, 24) can be adjusted in its length, the first (20) of the carrying guide arms (20, 24) being also connected to the intermediate guide arm (34) via a second pivot bearing (30) being spaced from the second pivot bearing (32) of the second carrying guide arm (24), characterized in that the guide arms arrangement (20, 24) can be switched between an essentially parallelogram guide arm arrangement being advantageous for position changes of the ready to work essentially vertically oriented leader (18) and a trapezoidal guide arm arrangement being advantageous for laying down the leader (18).
2. The working apparatus as in claim 1, characterized in that the carrying guide arm (24) being of adjustable length comprises a telescopic strut which can be pinned.
3. The working apparatus as in claim 1 od 2, characterized in that the carrying guide arm (24) being adjustable in length comprises a working cylinder.
4. The working apparatus as in claim 3, characterized by hydraulic latch means (74) for the hydraulic working cylinder forming a carrying guide arm (24) which is adjustable in length.
5. The working apparatus as in one of claims 1 to 4,
   characterized in that the intermediated guide arm (34) has two intermediate guide arm parts (36, 38) which are connected via a releaseable coupling (40, 48), one of which is connected to the second pivot bearings (30, 32) and the other of which is connected to the fourth pivot bearing (52).
6. The working apparatus in accordance with one of claims 1 to 5, characterized in that the length ratios of the carrying mechanism (16) referred to the length of the first carrying guide arm (20) are as follows:

   Length of the first carrying guide arm 100 %

   Length of the second carrying guide arm between about 100 % and about 180 %

   Length of the neck-support arrangement between about 90 % and about 160 %

   Length distance between the first pivot bearings about 50 %

   Distance between the second pivot bearings about 50 %

   Distance between the third and fourth pivot bearings about 50 %

   Distance of the third pivot bearing from the lower end of the leader about 160 %
7. Working apparatus as in one of claims 1 to 6, characterized in that the leader (18) has a head segment (58), which can be folded down in releasable manner.
8. The working apparatus as in one of claims 1 to 7, characterized in that the leader (18) comprises means (90, 92) for attaching a lifting appliance (96).
9. The working apparatus as in one of claims 1 to 8, characterized in that the carrying guide arms (20, 24) extend in essentially vertical direction when arranged in their parallelogram guide arm arrangement.
10. Working apparatus in according in one of claims 1 to 9, characterized in that the first carrying guide arm (20) is of fixed length and is pivotally connected to a forward portion of the superstructure (14) of the travelling chassis (10) and in that the second carrying guide arm (24) is formed as a hydraulic working cylinder and the chassis faceing end of which is connected with an upper central forward region of the superstructure (14) by means of its first pivot bearings (26).
11. The working apparatus as in one of claims 1 to 10, characterized in that a hydraulic working cylinder (80) is connected to an enlarged end portion of the first carrying guide arm (20) and the intermediate guide arm (34), respectivelly, by means of pivot bearings (82, 84).

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