CONSTRUCTION DEVICE AND METHOD FOR OPERATING A CONSTRUCTION DEVICE

Abstract

The invention relates to a construction device and to a method for operating this construction device, comprising a carrier device, an approximately vertical mast, which is mounted on the carrier device, a movement element, which is vertically movable along a linear guide on the mast, and at least one GPS receiving unit, which is arranged in the region of the mast. According to the invention, it is provided that the at least one GPS receiving unit is attached to the movement element and that the at least one GPS receiving unit can be moved between an upper, first measuring position and a lower, second measuring position by means of the movement element.

Claims

1.-11. (canceled)

12. Construction device, comprising a carrier device, an approximately vertical mast, which is mounted on the carrier device, a movement element, which is vertically movable along a linear guide on the mast, and at least one GPS receiving unit, which is arranged in the region of the mast, characterized in that the movement element is a beam-shaped leader element, in that the at least one GPS receiving unit is attached in an upper region of the leader element, in that the leader element comprises a linear slide guide on a front side facing away from the mast, in that a slide is provided which is mounted vertically movably along the slide conveyor of the leader element, and in that the at least one GPS receiving unit can be moved between an upper, first measuring position and a lower, second measuring position by means of the leader element.

13. Construction device according to claim 12, characterized in that two GPS receiving units are provided, which are arranged on opposite sides of the movement element.

14. Construction device according to claim 12, characterized in that the at least one GPS receiving unit comprises an antenna holder extending approximately horizontally away from the movement element, at the free end of which holder a receiving element is arranged spaced apart from the movement element.

15. Construction device according to claim 14, characterized in that the antenna holder comprises a first rod-shaped portion and a second rod-shaped portion, which are arranged angled with an obtuse bend angle relative to one another.

16. Construction device according to anyone of claim 12, characterized in that a working device, in particular a drilling drive, a vibration hammer or a piling unit, is arranged on the slide.

17. Construction device according to anyone of claim 12, characterized in that an auxiliary winch beam is provided on an upper end of the leader element above the at least one GPS receiving unit.

18. Construction device according to claim 17, characterized in that the auxiliary winch beam is mounted on the leader element rotatably about a vertical rotational axis.

19. Construction device according to any of claim 12, characterized in that the construction device is a drilling device, a vibration device or a piling device.

20. Method for operating a construction device according to anyone of claim 12, wherein, by means of the at least one GPS receiving unit, a first position measurement is taken in an upper, first measuring position in which the leader element is moved into an upper position on the mast and a second position measurement is taken in a lower, second measuring position in which the leader element is moved into a lower position on the mast.

Description

[0023] The invention is explained in the following with reference to preferred embodiments, which are shown schematically in the accompanying drawings, in which:

[0024] FIG. 1 is a side view of a construction device according to the invention having the leader element moved upwards;

[0025] FIG. 2 is a front view of the construction device from FIG. 1;

[0026] FIG. 3 is a perspective view of the construction device from FIG. 1 and FIG. 2;

[0027] FIG. 4 is a side view of the construction device from FIGS. 1 to 3 having the leader element moved downwards;

[0028] FIG. 5 is a front view of the construction device from FIG. 4;

[0029] FIG. 6 is a perspective view of the construction device from FIG. 4 and FIG. 5;

[0030] FIG. 7 is a perspective, enlarged view of an upper region of the leader element of the construction device from FIGS. 1 to 6; and

[0031] FIG. 8 is an enlarged view of a modified GPS receiving unit according to the invention.

[0032] A construction device 10 according to the invention, which is designed as a drilling device, is shown schematically in FIGS. 1 to 3. The construction device 10 comprises a carrier device 12, which comprises a crawler chassis 14. A superstructure 16 comprising an operator's cab and the drives is rotatably mounted on the crawler chassis 14. A mast 20 or a mast assembly is adjustably arranged in a front region of the superstructure 16 by means of an articulated mechanism 18 that is known in principle.

[0033] In the embodiment shown, the mast 20 consists of a beam-shaped vertical main mast 22, which can be vertically moved by means of a movement cylinder 19 relative to the articulated mechanism 18. The mast 20 can be transferred into a substantially horizontal position on the carrier device 12 by means of the articulated mechanism 18.

[0034] The main mast 22 of the mast 20 comprises a linear guide 24 on its front side, along which guide a movement element 30 is mounted vertically movably by means of an actuating cylinder 26. In the embodiment shown, the movement element 30 is designed as a beam-shaped leader element 32, such that the mast 20 or the mast assembly forms a so-called leader.

[0035] A linear slide guide 34 is formed even on the front side of the beam-shaped leader element 32 that is movable along the main mast 22. A slide 40 which can receive a working device 44 is mounted movably along the slide guide 34. In the embodiment shown, the working device 44 is designed as a drilling device comprising three output shafts.

[0036] An auxiliary winch beam 70 is mounted on the upper end or head region of the leader element 32 by means of a beam bearing 72 rotatably about a vertical rotational axis. At least one deflection roller 74 is arranged on the auxiliary winch beam 70, via which roller an auxiliary cable 76 is provided for special lifting tasks, for example for raising a drill pipe.

[0037] Two GPS receiving units 50 according to the invention are attached laterally to the upper end region of the leader element 32, below the auxiliary winch beam 70. The GPS receiving units 50 are designed to receive GPS signals and serve to the positioning in an existing GPS system.

[0038] In FIGS. 1 to 3, the leader element 32 is moved upwards relative to the main mast 22, such that the two GPS receiving units 50 are located in an upper, first measuring position. In this upper, first measuring position, a very good reception of a GPS signal is generally ensured, and therefore, in this position, it is in particular provided to approach a working point.

[0039] FIGS. 4 to 6 show the construction device 10 according to the invention from FIGS. 1 to 3, but at which the movement element 30 designed as the leader element 32 is moved downwards relative to the main mast 22. Depending on the travelling distance on the main mast 22, which may be up to 10 meters or more, the two GPS receiving units 50 are from now on located closer to the ground and thus closer to the actual processing point of the construction device 10. When constructing a foundation element, such as a foundation pile, or a drilling hole, for example, in this lower, second measuring position, a determination of the position of a working point can thus be executed particularly precisely by means of the GPS receiving units 50. In this retracted position of the mast 20, bearing play and unavoidable deflections of the mast 20, which may occur due to wind load for example, are also considerably reduced, and this contributes to an improvement in the position measurement.

[0040] At the same time, according to FIGS. 4 to 6, the slide 40 is also moved downwards into a position close to the ground, together with the working device 44, along the beam-shaped leader element 32.

[0041] An upper end region of the movement element 30 of the mast assembly 20, which is designed as a leader element 32, is shown in an enlarged view in FIG. 7. In this case, an approximately T-shaped auxiliary winch beam 70 comprising two lateral booms is arranged at an upper end of the beam-shaped leader element 32 via a horizontal rotatable beam bearing 72. A deflection roller 74 for an auxiliary cable 76 is rotatably mounted on one end of a boom on the front side of the leader element 32. A load hook 78 for lifting tasks is attached to the free end of the auxiliary cable 76.

[0042] A slide guide 34 for the slide 40 is formed on a front side of the beam-shaped leader element 32. The slide 40 comprising the working device (not shown in FIG. 7) can be moved vertically along the leader element 32 by means of an actuating cylinder or a cable assembly (not shown).

[0043] Two GPS receiving units 50 according to the invention are attached with in each case one bar-shaped antenna holder 54 to the upper end region of the leader element 32, below the beam bearing 72 of the auxiliary winch beam 70. The two bar-shaped antenna holders 54 extend laterally to opposite sides of the leader element 32.

[0044] A receiving element 52 for the GPS signals comprising the corresponding electronics is arranged at the respectively free end of the antenna holder 54 by means of a planar receptacle 60. Owing to the antenna holders 54, the receiving elements 52 are arranged spaced apart from the leader element 32 and the auxiliary winch beam 60, so that as a result a good reception of the GPS signals is achieved.

[0045] The antenna holders 54 are arranged in a rear region of the leader element 32 in such a manner that a collision with the auxiliary cable 76 comprising the load hook 78 is prevented when the auxiliary winch beam 70 pivots by at least 90.

[0046] A modified GPS receiving unit 50 is shown in FIG. 8. Here, the bar-shaped or rod-shaped antenna holder 54 has a straight first bar portion 58. A planar fastening flange 56 for detachably attaching the GPS receiving unit 50 to the movement element 30 is provided on the free end of the first bar-shaped portion 58.

[0047] A second bar-shaped portion 59 of the antenna holder 54 is joined to the first bar-shaped portion 58 at an obtuse bend angle. The second bar-shaped portion 59 is curved in an approximate semi-circle at its free end and receives a planar receptacle 60 in the curved region, to which the actual receiving element for receiving the GPS signals is attached. The antenna holder 54 may be designed as a hollow tube, such that a line for power-supply and data-communication can be arranged within the bar-shaped holder.