MODULAR TUNNEL FORMWORK DEVICE

Abstract

A tunnel formwork device includes a frame and at least two support structures connectable to the frame of the tunnel formwork device and spaced apart from each other in the longitudinal direction of the tunnel formwork device for supporting the frame on a tunnel floor. The frame carries at least two hydraulic support cylinders at at least two positions spaced apart from one another in the longitudinal direction, which support cylinders can be connected to longitudinal beams running in the longitudinal direction. The longitudinal beams carry tunnel formwork elements of the tunnel formwork apparatus. At least one lifting device is arranged on the frame, which lifting device carries at least one working platform. The lifting device has a lifting drive for moving the working platform relative to the frame.

Claims

1. Tunnel formwork device comprising: a frame, at least two support structures connectable to the frame and spaced apart from one another in a longitudinal direction for supporting the frame on a tunnel floor, the frame carrying at least two hydraulic support cylinders at at least two positions spaced apart from one another in the longitudinal direction, which support cylinders can be connected to longitudinal beams running in the longitudinal direction, which longitudinal beams carry tunnel formwork elements, at least one lifting device is connected with the frame and carries at least one working platform, the lifting device having a lifting drive for moving the working platform relative to the frame.

2. Tunnel formwork device according to claim 1, wherein the lifting device is also designed for horizontal and vertical movement of the working platform relative to the frame.

3. Tunnel formwork device according to claim 1, wherein the lifting drive is designed as an electric or hydraulic drive.

4. Tunnel formwork device according to claim 1, wherein the lifting device comprises at least two pivotably interconnected supporting arms.

5. Tunnel formwork device according to claim 4, wherein the support arms are pivotably connected both to the frame and to the working platform.

6. Tunnel formwork device according to claim 4, wherein the supporting arms are pivotably driven relative to the frame and to each other via the lifting drive.

7. Tunnel formwork device according to claim 1, wherein at least one working platform is arranged at at least one longitudinal end of the frame.

8. Tunnel formwork device according to claim 1, wherein two working platforms are arranged at at least one longitudinal end of the frame.

9. Tunnel formwork device according to claim 8, wherein the two working platforms are arranged symmetrically with respect to a central longitudinal axis of the frame.

10. Tunnel formwork device according to claim 1, wherein a travel range of the working platform in a transverse direction of the frame comprises adjustment ranges of all supporting cylinders.

11. Tunnel formwork device according to claim 1, wherein the supporting structures have supporting feet with rollers, which are designed for moving the tunnel formwork device in its longitudinal direction.

12. Tunnel formwork device according to claim 1, wherein the working platform projects beyond the supporting structures of the frame at an end face.

13. Tunnel formwork device according to claim 1, wherein the supporting structures comprise height-adjustable supporting legs.

14. Tunnel formwork device according to claim 1, wherein it comprises at least two modules connected to each other in the longitudinal direction of the tunnel formwork device.

15. Tunnel formwork device according to claim 1, further including a control arrangement for the lifting drive, which is connected to an input device arranged on the working platform for controlling the lifting drive.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The invention is described schematically below in the accompanying drawings.

[0041] FIG. 1 is a perspective view of a tunnel formwork device composed of two end modules and seven intermediate modules,

[0042] FIG. 2 is a perspective view in longitudinal direction of the tunnel formwork device,

[0043] FIG. 3 is a perspective view of the tunnel formwork device of FIG. 1 from diagonally below,

[0044] FIG. 4 is a side view of the tunnel formwork positioned by the support cylinders and the longitudinal beams towards the tunnel wall,

[0045] FIG. 5 is a frontal view of the tunnel formwork device from a longitudinal end, and

[0046] FIGS. 6 - 9 are frontal views showing the possible working areas of the working platforms.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0047] The detailed embodiments of the present invention are disclosed herein. It should be understood, however, that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, the details disclosed herein are not to be interpreted as limiting, but merely as a basis for teaching one skilled in the art how to make and/or use the invention.

[0048] In this embodiment, the tunnel formwork device 10 according to the invention has - not necessarily - a modular structure and is described below with reference to FIGS. 1 to 3. Accordingly, the modular tunnel framework device 10 comprises two end modules 12a, 12b and seven intermediate modules 14a-14g extending between the two end modules 12a, 12b, whereby adjacent modules are fixedly connected to one another. Each end module 12a, 12b includes a frame part 16a which is positively and/or non-positively connected to the frame part 16b of the adjacent intermediate module 14a, 14g, and also the frame parts 16b of the intermediate modules 14a-g are positively and/or non-positively connected to the adjacent intermediate modules 14a-g or end modules 12a, 12b preferably in the same manner to form a common frame 20 of the tunnel formwork device 10. The frame parts 16a of the end modules 12a, 12b are connected with supporting structures 18 embodied as two supporting legs each, which securely support the frame 20 of the entire tunnel formwork device 10, formed by the frame parts 16a, 16b of all modules 12a, 12b, 14a-g, on the tunnel floor. At the lower end of each support leg 18 is arranged a stand 19 with rollers, which can be moved along a path or rails in the longitudinal direction of the tunnel in the course of tunnel forming. The connection between the modules 12a, 12b and 14a-g or between their frame parts 16a, 16b is detachable so that the individual modules can be transported separately to the construction site. The support legs 18 are height-adjustable via a hydraulic telescopic mechanism 23, while their mutual spacing in the transverse direction (horizontally transverse to the tunnel direction) is adjustable via a horizontal telescopic mechanism 21 or by means of insertable adapter pieces.

[0049] Two movable working platforms 22a, 22b and 22c, 22d are connected via a hydraulic lifting device 24 to the frame 20. The lifting device 24 preferably comprises two pivotally interconnected support arms 25a, 25b, which are via a lifting drive 27 movable relative to one another. The lifting drive 27 comprises preferably a plurality of hydraulic cylinders to actuate the lifting device 24. Accordingly, the working platforms 22a-d can be moved horizontally, particularly laterally and can be raised and lowered relative to the respective frame part 16a, 16b and thus relative to the frame 20. Thus, inspections or assembly work on the tunnel formwork elements 33, on the hydraulically actuated rams 34 of the longitudinal beams 32a-f can be carried out via these working platforms 22a-d. At least one of the support arms 25a, 25b can optionally be adjustable in length, e.g. telescopic, in order to be able to increase the working range of the working platform 22a-d once again. In the present example, it is the first support arm 25a that is connected to the working platform 22a-d. The support cylinders 26, 28, 30 can be serviced from the hydraulically controlled working platforms.

[0050] The work platform or working platform 22a-d has a railing 29 to protect workers from falling. The lifting drive 27 comprising a plurality of hydraulic cylinders for moving the two support arms 25a, 25b relative to the frame 20. Via this measure the working platform 22a-d is movable over at least the associated half cross-section of the tunnel or working area of the tunnel formwork device 10, so that both working platforms 22a, 22b and 22c, 22d at one end of the frame 20 cover the whole tunnel ceiling to be lined.

[0051] The frame 20 extends at least approximately over the entire length of the tunnel formwork device 10. Two vertical hydraulic support cylinders 26a, 26b are preferably attached to the frame 20 for each intermediate module 14a-g, so that when the frame 20 is raised via the hydraulic telescopic mechanisms 23 of the support legs 18 for height adjustment, the vertical support cylinders 26a, 26b are also raised. Via this measure, tunnels of different heights can be lined and concreted with the tunnel formwork device 10. The vertical support cylinders 26a, 26b therefore do not even need to be hydraulic and adjustable in length.

[0052] The working platforms 22a, 22b, 22c, 22d are preferably controllable by control devices attached to the working platform 22a, 22b, 22c, 22d or its railing 29.

[0053] Each frame part 16b of the intermediate modules 14a-g carries in each case two obliquely downwardly pointing support cylinders 28a, 28b as well as two horizontally extending support cylinders 30a, 30b which, with respect to the tunnel center, extend symmetrically towards the tunnel sides facing away from each other. The free ends of the supporting cylinders 26a, 26b, 28a, 28b, 30a, 30b are each connected to longitudinal beams 32a-f, which in turn carry circular-arch tunnel formwork elements 33 (FIG. 4), which in their entirety form the tunnel formwork 37. The tunnel formwork device 10 thus controls six supporting cylinders or struts 26a, 26b, 28a, 28b, 30a, 30b, which extend over the entire inner circumference of the tunnel wall to be concreted, i.e. generally over a range of 150 to 270 degrees (see FIGS. 2 and 4). The tunnel formwork elements 33 may be supported on the tunnel floor 35 by separate support members 36. Alternatively, the supporting cylinders 28a and 28f, which point downward at an angle, may form the lowest support of the tunnel formwork 37 assembled by the totality of the tunnel formwork elements 33.

[0054] The support of the tunnel formwork 37 by the supporting cylinders 26a, 28a, 30a and by the longitudinal beams 32a, 32b, 32c is illustrated in FIG. 4. It is also evident from this illustration that the vertical support cylinders 26a, 26b do not have to be aligned exactly vertically, just as the horizontal support cylinders 30a, 30b do not have to be aligned exactly horizontally. These can be adjustable in their angle of attachment to the frame parts of the intermediate modules 14a-g at least in a small range of, for example, +/- 15 degrees, while the support cylinders pointing downwards at an angle can preferably be adjustable in a larger angular range of, for example, 45 degrees. The support struts 26a, 26b are preferably rigidly, i.e. non-pivotably, attached to the frame 20 so that the tunnel formwork is fixed in its angular position, and the tunnel formwork 37 thus cannot tilt while the tunnel formwork device is in motion.

[0055] Needless to say, preferably all support cylinders 26a, 26b, 28a, 28b, 30a, 30b are provided with load sensors 38 which are connectable via data lines 40 to the central control arrangement 44 of a control module 42 of the tunnel formwork device 10. The control arrangement evaluates the data from the load sensors 38 and preferably also controls the support cylinders as a function of the recorded data in order to optimally position the tunnel formwork 37 and to actuate concrete pumps for filling the space between the tunnel wall and the tunnel formwork 37 in such a way that there is no excess load on the support cylinders or the tunnel formwork elements 33. On the tunnel formwork device 10, six longitudinal beams 32a-f are supported by seven hydraulic support cylinders 26a, 26b, 28a, 28b, 30a, 30b, respectively, which are connected to the seven individual intermediate modules 14a-g. In this way, the forces of the tunnel formwork 37 can be effectively absorbed by the tunnel formwork device 10, with the force transfer in the driving condition ultimately occurring through the support structures 18 into the tunnel floor 35. The two ends of each longitudinal beam 32a-f are provided with hydraulically actuated rams 34, which are controlled in such a way that they bear against the tunnel walls, whereby all longitudinal beams 32a-f are fixed in their position between these and the support structures 18, resulting in reproducible formwork results.

[0056] The control module 42 preferably includes a cabin 46, preferably with at least one window 48, in which the control arrangement 44 is positioned. In this way, it is effectively protected from the dirt and moisture of the construction site. The control module 42 may be positioned anywhere on the tunnel formwork device 10. Preferably, it is connectable to the support structure 18 or to a frame part 16a, 16b of an end or intermediate module 12a, 12b, 14a-g. The control arrangement is connected to hydraulics for actuating all support cylinders and to concrete pumps for filling the cavity between the tunnel wall and tunnel formwork 37 to optimally control the tunnel forming operation.

[0057] The working platforms 22a-d, which are movably held on the frame parts 12a, 12b, preferably protrude over the supporting structures or supporting legs 18 on the front side so that the ends of the tunnel formwork 37 and the entire tunnel formwork device 10 can be easily overlooked.

[0058] FIG. 5 shows the cross-section of the tunnel formwork device 10 shown in FIGS. 1 to 4 in more detail than FIG. 4. In all figures, identical or functionally identical parts are provided with the identical reference signs.

[0059] The complete tunnel formwork device 10 is shown in cross-section with the frame 20 supported on the supporting legs 18, with the supporting cylinders 26a, 26b, 28a, 28b and 30a, 30b arranged on the frame 20, the longitudinal beams 32a-f supported on the supporting cylinders 26a, 26b, 28a, 28b and 30a, 30b and extending in the longitudinal direction of the tunnel formwork device 10 (= tunnel direction), the tunnel formwork elements 33 stretched between them, which together form the tunnel formwork 37.

[0060] FIGS. 6 to 9 show different working positions of the working platform 22a, showing how comprehensively each of the four working platforms 22a-d at both ends of the tunnel formwork device covers a complete half of the tunnel cross-section or working area of the tunnel formwork device 10. The working platforms 22a-d can be moved under the frame 20, over the frame 20 and laterally away therefrom so that the entire corresponding tunnel formwork 37 can be inspected, as well as the corresponding components 26, 28, 30, 32, 33, 34 of the tunnel formwork device 10. At the components 26, 28, 30, 32, only visual inspections can be made from the working platforms be made, but rather no assembly or inspection work.

[0061] The present invention is not limited to the embodiment example, but may be varied as desired within the scope of the following claims.

TABLE-US-00001 List of reference numbers 10 tunnel formwork device 12a,b End modules 14a-g intermediate modules 16a Frame part of the end modules 16b Frame part of intermediate modules 18 Support structures - support legs 19 support legs with rollers 20 frame of the tunnel formwork device formed by the frame parts of the end and intermediate modules 21 horizontal hydraulic telescopic mechanism or adapter pieces for width adjustment, i.e. for adjusting the mutual distance of the support legs in the transverse direction 22a-d working platforms (lifting platforms) movable relative to the frame or frame parts of the end modules, two at each end module 23 vertical hydraulic telescopic mechanism for height adjustment of the supporting structure or supporting legs 24 hydraulic lifting device for the working platforms, in particular arranged on the frame parts of the end modules 25a,b two articulated support arms of the lifting device for vertical and lateral movement of the working platform relative to the frame, of which the first support arm connected to the working platform is adjustable in length 26a,b vertical support cylinders, in particular hydraulically or non-length-adjustable support struts, preferably fixed at a fixed angle to the frame 27 hydraulic lifting drive of the lifting device, comprising a plurality of hydraulic cylinders 28a,b support cylinders directed obliquely downwards, in particular hydraulically 29 railing of the working platform 30a,b horizontal support cylinders, in particular hydraulic 32a-f longitudinal beams running in the longitudinal direction of the tunnel formwork device for supporting the tunnel formwork elements 33 circular-arc tunnel formwork elements 34 hydraulically actuated rams on the longitudinal beams for supporting against the tunnel wall - support rams 35 tunnel floor 36 floor support element 37 tunnel formwork 38 Load sensors 40 Data link 42 Control module 44 Control arrangement 46 Cabin 48 Window