EP1657400A1 - Construction apparatus - Google Patents

Abstract

A building construction machine has a tracked vehicle chassis (2) supporting a horizontally pivoting platform (50). The platform has an upright mast (10) that is free to incline on a pivot (30) with respect to the vertical under control. The platform (50) with pivot (30) is free to slide longitudinally with respect to the chassis (2). The relative movement of platform to chassis is effected by a linear drive and does not pivot on the chassis. The linkage between the mast and platform is a universal joint. The platform incorporates an operator cabin and a hydraulic power supply system.

Description

The invention relates to a construction work implement with a chassis and a mast element, wherein on the mast member is provided a pivot about which the mast member on the chassis from an approximately vertical operating position in an inclined transport position is pivotally, in which the mast member extends longitudinally over the chassis.

A generic construction equipment is shown in DE 44 36 264 Cl. The construction apparatus known from this publication has a two-part mast with an upper and a lower mast element. The upper mast element is articulated via an upper pivot on the lower mast element and the lower mast element via a lower pivot on a chassis. In the approximately vertical operating position of the mast, the two mast elements are locked in an aligned working position. To transport the construction implement, the two mast parts are pivoted about the hinges such that the lower mast element extends obliquely upward forward and the upper mast element is folded back into a horizontal position in which it extends longitudinally over the chassis. The lower hinge can be provided according to DE 44 36 264 Cl on a tubular arm, whose outer surface forms a sliding fit with the inner surface of a provided on the chassis of the construction equipment, sleeve-like receptacle. As a result, a pivotability of the upright mast is given both in a longitudinal plane of the chassis and transversely thereto.

The object of the invention is to provide a structurally particularly simple and compact in transport construction implement.

The object is achieved by a construction implement with the features of claim 1. Preferred embodiments are given in the dependent claims.

The construction work apparatus according to the invention is characterized in that the rotary joint is arranged on a carriage, which is provided longitudinally displaceably guided on the chassis.

A basic idea of the invention can be seen in directing the mast element running in the transport position over the chassis directly by means of the rotary joint to a carriage which can be displaced longitudinally. To transport the construction equipment of this slide can be moved together with the hinge on the construction equipment forward, whereby the distance of the hinge from the chassis center is increased. This is particularly advantageous if the chassis along the inclined mast element upwardly projecting obstacles, such as a winch, are arranged, which limit the maximum pivot angle of the mast element in the transport position. By moving the carriage with the swivel joint forward on the chassis, the distance of the swivel joint from these obstacles can be increased and thus a larger maximum swivel angle of the mast element in the transport position can be achieved. As a result, the clear height of the construction work device can be reduced in the transport position of the mast element and consequently a particularly compact construction work equipment can be obtained in a particularly simple manner.

Since according to the invention in the transport position along the chassis running mast element itself is articulated on the carriage, in this case no second mast element is required, which for transporting the construction equipment in an oblique brought upwards position. As a result, according to the invention, the construction of the construction work apparatus is particularly simple.

By moving the rotary joint according to the invention together with the mast element on the chassis forward can also be increased, in particular in long mast elements and / or masts, the tipping stability of the construction equipment in the transport position of the mast element. Thus, by moving the hinge forward, i. from the chassis center and / or the chassis center of gravity, the center of gravity of the mast element and / or the mast in the transport position can be brought into the area of the chassis center of gravity, whereby torques on the construction work equipment can be reduced.

If the mast element is in its approximately vertical operating position, the center of gravity of the mast element and / or the mast can be brought closer to the center of the chassis by retracting the carriage with the mast element, thus increasing the tipping stability of the construction work implement.

A particularly reliable operation of the construction work implement according to the invention is made possible by the fact that for active displacement of the carriage on this an actuator, in particular a preferably extending in a direction of displacement of the carriage linear drive is provided. The carriage is advantageously linearly displaceable, that is mounted one-dimensionally displaceable on the chassis, wherein the displacement direction advantageously extends at least approximately horizontally. Preferably, the linear drive is designed as a hydraulic actuating cylinder. But it can also be designed for example as a rack drive or spindle drive. Suitably, the linear drive is arranged on one side on the carriage and on its other side on the chassis, in particular articulated.

The stability of the construction work implement according to the invention can be increased by the fact that the carriage is rotatably guided on the chassis. This can be understood in particular that a rotation of the carriage relative to the chassis about a longitudinal axis of the chassis is not possible.

The reliability of the construction work implement according to the invention can be increased, that the chassis a guide frame, in particular with at least two guide rails, is arranged for guiding the carriage, wherein the carriage is guided in particular on and / or under the guide frame. The guide frame is suitably arranged on a floor assembly of the chassis, preferably on a floor assembly of a superstructure of the chassis.

It is further particularly advantageous that the rotary joint is arranged on the mast element in a region spaced from the foot of the mast element. According to this embodiment, therefore, the rotary joint is not arranged directly on the mast base, but offset upwardly relative to the foot along the mast element. This has the consequence that the mast element protrudes under the preferably arranged on the upper carriage of the chassis pivot and thus, in particular in the operating position of the mast element reaches relatively close to the ground. This allows a particularly reliable and versatile tool guide along the mast element. Since, in this inventive arrangement of the rotary joint, the mast element extends on both sides of the rotary joint, the forces necessary for erecting the mast element from the transport position into the operating position are also particularly low. Advantageously, the hinge is arranged in the lower quarter, in particular in the lower eighth of the mast element.

According to the invention, the rotary joint serves for pivoting the mast element between the transport position and the operating position. In addition, it can also be provided, the mast element during operation of the construction equipment around the hinge to pivot, for example, to create obliquely to the vertical holes in the ground. The pivoting of the mast element about the hinge is suitably carried out in a longitudinal plane of the construction work implement and / or the chassis. A particularly versatile construction work implement can be obtained by arranging, in particular between the rotary joint and the mast element, a further rotary joint for transverse pivoting of the mast element. In this context, pivotal swiveling of the mast element transversely to the longitudinal plane can be understood. A particularly compact construction work tool can be obtained by arranging the further rotary joint directly on the mast element, wherein it can be arranged, in particular, at least partially set back relative to a mast element facing the chassis on the mast element.

According to the invention, the transport dimensions of the construction work implement can be reduced by providing a longitudinal recess for receiving the mast element in its transport position on the chassis. According to this embodiment, therefore, the chassis can survive on both sides of the folded mast element at least partially upwards over the mast element. Suitably, an operator's cab of the construction implement is arranged at the transport position of the mast element laterally next to the mast element and / or is located laterally next to the guide frame.

A particularly efficient and at the same time compact construction work implement can be obtained according to the invention by providing at least one respective hydraulic power pack for the supply of hydraulic drives of the construction work implement on both sides of the recess on the chassis. A hydraulic power pack is understood to mean a device by means of which a hydraulic fluid can be subjected to pressure. The two Powerpacks are suitable for the supply of different hydraulic drives. For example, a first power pack can be used to power a drive be provided for the driving of the chassis and for a rotation of the upper carriage on an undercarriage. By contrast, the second power pack can supply hydraulic drives for adjusting the inclination of the mast element, for moving the carriage and / or for operating a drilling tool arranged on the mast element. In principle, however, it can also be provided to feed a common hydraulic circuit with the two power packs.

For particularly simple pivoting of the mast element between its transport position and its operating position, it is inventively that at least one hydraulic neck cylinder is provided, which is articulated on one side on the chassis and on the other side above the pivot on the mast element. Advantageously, two, in particular parallel, neck cylinder are provided. For a particularly large pivot angle of the mast element in the transport position, the hydraulic neck cylinder is preferably laterally, i. arranged on an approximately parallel to the longitudinal plane extending longitudinal side of the mast element on the mast element.

A particularly easy to transport construction equipment is characterized in that at least one support for holding a drill string is provided on the mast element. Such a drill pipe, which may be designed in particular as a Kelly bar, may be guided longitudinally displaceably on the mast element during operation of the construction work implement. To transport the construction equipment, this guide can be solved and the drill pipe to be placed in the support on the mast element. The pad is suitably formed like a shell. Advantageously, the drill pipe is also supported by the at least one hydraulic neck cylinder during transport of the construction equipment except in the edition. Preferably, the drill pipe is arranged during transport of the construction equipment above the mast element and extends at least approximately horizontally.

Fig. 1

eine Seitenansicht eines erfindungsgemäßen Bauarbeitsgerätes, bei dem sich das Mastelement in einer etwa vertikalen Betriebsposition befindet;

Fig. 2

eine Frontansicht des Bauarbeitsgerätes aus Fig. 1 ohne Bohrwerkzeug, Bohrgestänge und Kraftdrehkopf, mit dem Mastelement in der Betriebsposition, wobei das Mastelement zum Schrägbohren quer zu einer Längsebene verschwenkt und in seinem oberen Bereich gebrochen dargestellt ist; und

Fig. 3

eine Seitenansicht des Bauarbeitsgerätes aus Fig. 1 in seinem Transportzustand, in dem das Mastelement in seine Transportposition verschwenkt ist.

The invention will be explained in more detail with reference to preferred embodiments, which are shown schematically in the figures. In the figures show:

Fig. 1

a side view of a construction apparatus according to the invention, in which the mast element is in an approximately vertical operating position;

Fig. 2

a front view of the construction implement of Figure 1 without drill, drill pipe and power turret, with the mast element in the operating position, wherein the mast element for oblique drilling is pivoted transversely to a longitudinal plane and shown broken in its upper portion. and

Fig. 3

a side view of the construction implement of Fig. 1 in its transport state, in which the mast element is pivoted into its transport position.

An inventive construction equipment is shown in Figs. 1 to 3. The construction implement has a chassis 2 with an undercarriage 71 configured as a tracked vehicle and a superstructure 72 rotatably mounted thereon. On the upper carriage 72 of the chassis 2, a pivotable in its longitudinal plane mast element 10 is articulated. In the illustrations of FIGS. 1 and 2, the mast element 10 is in an operating position in which the mast element 10 extends approximately vertically. In the illustration of FIG. 3, the mast element 10, however, is shown in a transport position in which the mast element 10 is pivoted in the longitudinal plane of the upper carriage 72 such that it extends backwards over the chassis 2 away.

For longitudinal pivoting of the mast element 10, ie for pivoting the mast element 10 in the longitudinal plane of the upper carriage 72, a swivel joint 30 is provided on the bottom side of the mast element 10. This hinge 30 has a horizontal and transverse to the longitudinal plane extending hinge axis 32 and two longitudinally on the mast element 10 projecting joint bearing plates 33, through which the hinge axis passes. The joint bearing plates 33 are arranged above the foot 6 of the mast element 10.

The hinge axis 32 of the rotary joint 30 is arranged on a carriage 50, which is guided longitudinally displaceably on the upper carriage 72. For this purpose, two parallel and along the upper carriage 72 extending guide rails 51, 51 'are provided on the upper carriage 72, which laterally and laterally, i. on the bottom side, each of which is formed with an L-like cross-sectional profile, the front guide runner 52, 52 'of the carriage 50 are encompassed. Above the front guide runners 52, 52 ', the carriage 50 has a transverse yoke 53 which connects the two front guide runners 52, 52'. This yoke 53 rests on the upper side on the guide rails 51, 51 '. In addition to the two front guide skids 52, 52 'and spaced therefrom, the carriage 50 also has two rear guide skids 55, which are also formed with L-like cross-sectional profile and the guide rails 51, 51' engage around. The term "front" and "rear" can be understood with respect to the hinge 30, i. the front guide runners 52, 52 'are located closer to the pivot 30 than the rear guide runners 55. The rear guide runners 55 are also interconnected by a transverse yoke. By the guide rails 52, 52 ', 55 and connecting these runners yokes of the carriage 50 is rotatably and only in the longitudinal direction, parallel to the guide rails 51, 51' slidably guided on the chassis 2.

On the front side of the carriage 50, two vertically extending retaining plates 57 are provided, through which the hinge axis 32, in particular rotatable, extends therethrough. For active method of the carriage 50, a hydraulic adjusting cylinder 59 is arranged on the rear side of this, which in turn is arranged on the upper carriage 72. In Fig. 3 the piston rod of the actuating cylinder 59 is shown detached from the carriage 50.

The carriage 50 makes it possible to move the pivot 30 and thus the lower portion of the mast element 10 with respect to the upper carriage 72 of the chassis 2 horizontally. In particular, as shown in Fig. 3, the carriage 50 are moved together with the pivot 30 for transporting the construction equipment on the superstructure 72 forward. This makes it possible to reduce the maximum pivoting angle of the mast element 10, i. to increase the maximum angle of the mast element 10 relative to the vertical. This maximum pivoting angle can be defined, in particular, by an obstacle arranged on the rear side of the upper carriage 72, for example a winch 74, which limits the pivoting travel of the mast element 10. By moving the swivel joint 30 by means of the carriage 50 to the front, the distance of the swivel joint 30 from this obstacle is increased and thus the maximum possible swivel angle is increased.

As can be seen from Fig. 1, the carriage 50 is, however, withdrawn during operation of the construction work device and thereby displaces the center of gravity of the mast element 10 to increase the tilting safety closer to the center of gravity of the chassis 2 out.

As shown in FIG. 1, the construction work implement according to the invention can be used to operate a soil working tool 66 designed as a worm drill in the illustrated embodiment. This tilling tool 66 is arranged at the bottom on a telescopic drill pipe 60, which is longitudinally guided by means of a power rotary head 65 on the mast element 10 and rotatably driven. The drill pipe 60 is suspended in operation at its upper side on a cable 67 which is guided over two head rollers on the mast element 10 arranged deflection rollers 68, 68 'and a longitudinally arranged on the mast element 10 guide roller 69 to the rear side on the upper carriage 72 arranged winch 74. While the rear guide roller 68 'of the two reversing rollers arranged on the head side is fixedly mounted on the head of the mast element 10, the front guide roller 68 by means of a boom 76th pivotally mounted on the mast element 10. For active pivoting of the arm 76 with the front guide roller 68, a linear drive 77 is provided.

In the operating state shown in FIG. 1, the front deflecting roller 68 is pivoted forward into a position aligned with the drill pipe 60. On the other hand, in the transport state illustrated in FIG. 3, it is swung backwards by shortening the linear drive 77, which reduces the clear height of the construction work implement.

3, to further reduce the clear height of the construction implement in its transport position, the drill pipe 60 are removed from the longitudinally driving top 65, are detached from the cable 67 and provided on a provided in an upper region of the Mästelementes 10 edition 61 be launched.

2, the superstructure 72 in the middle has a recess 20 extending along the upper carriage 72, into which the mast element 10 is inserted in its transport position. On both sides of this recess 20, a hydraulic power pack 21, 21 'for generating hydraulic pressure is provided in each case. In front of the left power pack 21, laterally next to the power pack 21 ', an operator cab 24 is provided on the uppercarriage 72.

For active longitudinal pivoting of the mast element 10, in particular between its operating position and its transport position, two parallel neck cylinder 11, 11 'are provided, which are articulated on one side on the mast element 10 and on the other side on the carriage 50. Alternatively, the neck cylinder 11, 11 'can also be hinged to a fixed part of the upper carriage 72. Due to the articulation of the neck cylinder 11, 11 'on the carriage 50, however, the Längsverschwenkung the mast element 10 is independent of the position of the carriage 50 on the upper carriage 72nd

As can be seen in particular FIG. 2, the mast element 10 is also provided transversely pivotable on the superstructure 72 in addition to längsverschwenkbaren storage by means of the rotary joint 30. Querverschwenkbarkeit is understood in this context a pivotability transverse to the longitudinal plane of the upper carriage 72. For transversely pivotable mounting of the mast element 10 on the upper carriage 72, a further rotary joint 40 is provided on the joint bearing plates 33 of the rotary joint 30, the axis of rotation of which is arranged perpendicular to the axis of rotation of the rotary joint 30. This swivel joint 40 is formed by a bolt formed on the joint bearing plates 33, which engages in a sleeve element 10 arranged on the sleeve. Alternatively, the sleeve can also be formed on the joint bearing plates 33 and the bolt on the mast element 10. As well as the hinge 30 and the immediately adjacent pivot 40 is arranged spaced from the foot 6 of the mast element 10. For a particularly compact construction, the swivel joint 40 is set back in relation to the longitudinal side 46 of the mast element 10 facing the chassis into the interior of the mast element 10.

As can be seen in particular from FIG. 2, in order to pivot the mast element 10 actively about the swivel joint 40 on both sides of the mast element 10, a pivoting rocker drive designed as a hydraulic swivel cylinder 43, 43 'is provided. The pivoting cylinder 43 is shown in Fig. 2 in different pivot states. The two pivoting cylinders 43, 43 'are arranged in each case on one side on the hinge axis 32 of the rotary joint 30 and on its other side to a foot side on the mast element 10 and transverse thereto extending yoke 44, in particular articulated. The axes of rotation of these linkages run at least approximately parallel to the axis of rotation of the rotary joint 40. By opposing actuation of the two pivoting cylinder 43, 43 'is the yoke 44 and thus the mast element 40 connected thereto with respect to the joint bearing plates 33 and thus the upper carriage 72 transversely pivoted.

As well as the two pivoting cylinders 43, 43 'are the two neck cylinder 11, 11' arranged parallel to each other, whereby two articulation points of the neck cylinder 11, 11 'are given to the mast element 10. To support the active Querverschwenkung the mast element 10 are synchronously with the opposite operation of the two pivoting cylinders 43, 43 'and the two neck cylinder 11, 11' moved in opposite directions.

Claims (10)

Construction work tool with - a chassis (2) and - A mast element (10), wherein - On the mast element (10) is provided a pivot (30) about which the mast element (10) on the chassis (2) from an approximately vertical operating position in an inclined transport position is pivotable, in which the mast element (10) along the chassis ( 2),
characterized , - That the rotary joint (30) on a carriage (50) is arranged, which is longitudinally displaceably guided on the chassis (2) is provided. Construction work tool according to claim 1,
characterized ,
in that an actuator, in particular a linear drive which preferably extends in a direction of displacement of the carriage (50), is provided for active displacement of the carriage (50) thereon. Construction work tool according to one of claims 1 or 2,
characterized ,
in that the carriage (50) is guided in a rotationally fixed manner on the chassis (2). Construction work tool according to one of claims 1 to 3,
characterized ,
in that a guide frame, in particular with at least two guide rails (51, 51 '), for guiding the carriage (50) is arranged on the chassis (2), wherein the carriage (50) is guided in particular on and / or under the guide frame. Construction work tool according to one of claims 1 to 4,
characterized ,
in that the swivel joint (30) is arranged on the mast element (10) in a region spaced from the foot (6) of the mast element (10). Construction work tool according to one of claims 1 to 5,
characterized ,
in that a further rotary joint (40) for transverse pivoting of the mast element (10) is arranged between the rotary joint (30) and the mast element (10). Construction work tool according to one of claims 1 to 6,
characterized ,
that there is provided a longitudinally extending recess (20) on the chassis (2) for accommodating the mast element (10) in its transport position. Construction work apparatus according to claim 7,
characterized ,
in that at least one hydraulic power pack (21, 21 ') is provided on the chassis (2) for the supply of hydraulic drives of the construction work implement. Construction work tool according to one of claims 1 to 8,
characterized ,
that at least one hydraulic neck cylinder (11, 11 ') is provided, which on its one side on the chassis (2) and is articulated on its other side above the pivot (30) on the mast element (10). Construction work tool according to one of claims 1 to 9,
characterized ,
in that at least one support (61) for holding a drill pipe (60) is provided on the mast element (10).

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