Device for moving a bridge

Abstract

Device (1) for moving a bridge (6) with a sliding beam (5) on which several sliding bearings (7) are arranged, which are supported on the underside of the sliding beam (5) and on which a bridge (6) can be placed on an upper side, wherein a sliding device (9) is provided for moving the sliding bearings (7) with the bridge (6) along the sliding beam (5) and the sliding device (9) is fixed to the sliding beam (5) so that no horizontal forces are introduced below the sliding beam (5) by moving it into a pier (2) or a support (3), wherein the sliding beam (5) is rotatably mounted on a tilting bearing (4) of a support (3) which can be positioned on a pier (2).

Description

[0001] The present invention relates to a device for moving a bridge, with a sliding beam on which a plurality of sliding bearings are arranged, which are supported on an underside on the sliding beam and on which a bridge can be placed on an upper side, wherein a pushing device is provided for moving the sliding bearings with the bridge along the sliding beam and the pushing device is fixed to the sliding beam, so that no horizontal forces are introduced into a pillar or a support below the sliding beam by the moving.

[0002] For the launching of a bridge, a launching beam is usually used, supported on a pier, onto which the bridge can be lowered and moved. However, considerable horizontal forces arise during the launching of the bridge due to friction. This friction can make reinforcement necessary for tall piers, although the high horizontal loads only occur during the launching and no longer occur in the final state after the bridge is installed. This can lead to an inefficient design of the piers.

[0003] AT 307 480 B discloses a plate-shaped sliding base for moving heavy components, in which a metal insert is coated with a sliding layer. Furthermore, a layer of an elastic material is provided, onto which a component can be placed. A hydraulic press can be used for the movement.

[0004] DE 22 65 161 A1 discloses a device for moving a bridge superstructure, in which the bridge is placed on a compressible and rotatable slide. The slide can then be moved via pull rods.

[0005] AT 381 519 B discloses a device for moving a supporting structure using the incremental launching method. For this purpose, a launching press is supported along a supporting rail to move the supporting structure along slideways and the supporting rail.

[0006] DE 19 02 890 A shows a device for moving bridges in which rails are laid on which roller carriages can be moved.

[0007] DE 26 38 361 A1 discloses a sliding device for a bridge superstructure, comprising a drive arranged on a bridge abutment and at least one sliding device mounted on a bridge pier. The sliding device comprises sliding plates that are moved together with the bridge.

[0008] The object of the present invention is therefore to provide a device for moving a bridge in which only low horizontal loads act on the piers and, at the same time, a compact design of the sliding beam is possible. Furthermore, the device should be usable on piers of any height.

[0009] This object is achieved by a device having the features of claim 1 and a device having the features of claim 9.

[0010] According to the invention, the bridge can be moved along the sliding beam on the sliding bearings using a pulling or pushing device. This ensures that the bridge is moved together with the sliding bearings by the pulling or pushing device. Furthermore, the bridge can be moved continuously without the need to lift and lower the bridge. The device can be used for almost any cross-sectional bridge design, offering a high degree of flexibility.

[0011] According to a preferred embodiment of the invention, several sliding bearings are arranged one behind the other along a sliding track on the sliding beam. The sliding bearings are then moved along the sliding track together with the bridge. The frictional resistance of the sliding bearings is preferably greater on the side facing the bridge than on the side facing the sliding beam, so that the bridge is always moved together with the sliding bearings.

[0012] According to a further embodiment of the invention, a pushing device is attached to the sliding beam, for example with a lifting cylinder mounted on a boom on the sliding beam. This results in only minimal horizontal loads, since the sliding beam is a closed system in terms of forces. The forces introduced by the pushing device are thus used to move the sliding bearings and the bridge, but are introduced at the pushing device in the opposite direction into the sliding beam, so that no horizontal forces need to be introduced into a pier or support below the sliding beam due to the displacement. This allows the piers to be constructed at almost any height, since the static design of the piers can be designed independently of the launching system.

[0013] Preferably, a support is provided for inserting an additional sliding bearing between the underside of the bridge and the sliding beam. This creates a continuous track of sliding bearings, which is filled with sliding bearings on one side when the bridge is moved. The sliding bearings at the end of the sliding track can then be collected in a collecting element when the bridge is pushed out over the end of the sliding beam.

[0014] To ensure smooth thrust movement, a lubricant, e.g., made of PTFE or similar materials, is preferably provided on the underside of the thrust bearings. The lubricant can be provided either on the thrust bearings or on a sliding track on the sliding beam to keep frictional forces low. Furthermore, means for increasing frictional resistance, such as elastomers, can be provided on the top side of the sliding bearings.

[0015] In this process, at least one shunt bearing is first placed on the shunt beam, and then the bridge is placed or moved onto the at least one shunt bearing. A further shunt bearing is then positioned behind the shunt bearing, between the bridge and the shunt beam, and this further shunt bearing, together with the at least one shunt bearing of the bridge, is then moved along the shunt beam. This allows the bridge to remain continuously placed on the shunt bearings and to be moved. The shunt bearings are then successively placed on the foremost shunt bearing and moved until the bridge has reached the desired position. The process steps of positioning the further shunt bearing and moving the further shunt bearing are thus repeated as often as necessary.

[0016] According to a preferred embodiment of the method, the additional sliding bearing is aligned between a support and the underside of the bridge before sliding. This prevents the additional sliding bearing from becoming tilted during insertion.

[0017] The displacement is preferably achieved via at least one lifting cylinder attached to the sliding beam. The force from the lifting cylinder can be applied directly to the additional sliding bearing.

[0018] The invention will be explained in more detail below using an exemplary embodiment with reference to the accompanying drawings. They show: Fig. 1 is a view of a device according to the invention for moving a bridge; Fig. 2 to 6 several views of the device of the Fig. 1 in the area of ​​a pushing device in different positions; Fig. 7 a view of two adjacent shunting bearings, and Fig. 8 a sectional view through the sliding beam of the Fig. 1 in the area of ​​the shunting track.

[0019] A device 1 for moving a bridge is arranged on a pier 2, on which a support 3 is positioned. The support 3 has a tilting bearing 4 on which a sliding beam 5 is rotatably mounted.

[0020] A bridge 6 is movable on the sliding beam 5, which Fig. 1 is only schematically indicated as a strip. The bridge 6 rests with a lower edge on sliding bearings 7 arranged between the bridge 6 and the sliding beam 5. The sliding bearings 7 extend over almost the entire length of the sliding beam 5.

[0021] On one side of the sliding beam 5, a boom 12 is mounted on a flange 13, with a thrust device 9 with a lifting cylinder 10 arranged on the boom 12. The lifting cylinder 10 is supported on an outer side by an anchor 11 on the boom 12 and can move a carriage 14 in the horizontal direction on the opposite side.

[0022] To move a bridge 6 along the sliding beam 5, the sliding bearings 7 are first placed on the sliding beam 5 along a sliding track 18. The bridge 6 is then moved or placed over them.

[0023] As in Fig. 2, a further shunt bearing 7' is then placed behind or, as seen in the direction of movement, in front of a shunt bearing 7 between the lower edge of the bridge 6 and the shunt beam 5. The further shunt bearing 7' is aligned via a support 8 so that it can be inserted exactly into a gap between the lower edge of the bridge 6 and the shunt beam 5.

[0024] As in Fig. 3, the lifting cylinder 10 of the pushing device 9 is then actuated and presses the carriage 14 against the further sliding element 7'. The carriage 14 presses against the further sliding element 7' with a projection 15, wherein the projection 15 engages in a receptacle on the sliding bearing 7'. To prevent rotation of the carriage 14, it is guided on a base 16, and suitable metal sheets can also establish contact between the carriage 14 and the lower edge of the bridge 6. After aligning the carriage 14 and the further sliding bearing 7', the support 8 can be removed.

[0025] In Fig. Figure 4 shows the position in which the additional sliding bearing 7' has been partially inserted between the lower edge of the bridge 6 and the sliding beam 5 via the carriage 14 and the lifting cylinders 10. By moving the additional sliding bearing 7', all sliding bearings 7 between the lower edge of the bridge 6 and the sliding beam 5 are moved together with the bridge 6. The frictional resistance of the sliding bearings 7 is significantly lower on the side facing the sliding beam 5 than on the side facing the bridge 6. As a result, no horizontal forces are exerted on the pier 2 or the support 3 during the movement.

[0026] In Fig. 5 shows a position in which the sliding bearing 7' has already been completely inserted between the lower edge of the bridge 6 and the sliding beam 5. A piston rod 17 of the lifting cylinder 10 is extended and can now be retracted again in a next step. Fig. 6 shows the position in which the carriage 14 has been moved back to its starting position, so that now another sliding bearing 7' can be positioned via a support 8, so that the process can be repeated until the bridge 6 is arranged in the desired position.

[0027] In Fig. 7 shows two adjacent sliding bearings 7 and 7', each of which is plate-shaped and has a middle plate 70, a lower plate 71, and an upper plate 72. The middle plate 70 is offset from the lower plate 71 and the upper plate 72, so that a groove-shaped receptacle is formed on one end face of the sliding bearing 7. An end section 73 of the middle plate 70 of the adjacent sliding bearing 7' engages in this groove-shaped receptacle. This allows adjacent sliding bearings 7 and 7' to be positioned particularly precisely. The horizontal forces are transmitted between the two middle plates 70. The plates 70, 71, and 72 can be made of steel.

[0028] The lower plate 71 can be coated with a lubricant, such as PTFE, to ensure low frictional resistance during displacement. The upper plate 72 has a means on its upper side to increase the frictional resistance; for example, an elastomer can be provided on the upper side of the plate 72, so that the displacement bearings 7 are displaced together with the bridge 6.

[0029] In Fig. Figure 8 shows a cross-sectional view through the sliding beam 5 in the area of ​​the sliding bearings 7. A sliding track 18 is formed on the sliding beam 5, on which the sliding bearings 7 rest. The sliding track 18 can have a PTFE coating on its upper side, which is enclosed on opposite longitudinal sides 21. The sliding track 18 is supported on a plate 22. Other designs are also possible for guiding the sliding bearings 7 in a strip-like manner along the sliding beam 5.

[0030] When the sliding bearings 7 are moved, the last sliding bearing 7" is pushed beyond the sliding beam 5 so that it can be collected on a collecting element 20, for example a trough, and then reinserted at the other end of the sliding beam 5 on the pushing device 9. List of reference symbols 1 device 2 pillars 3 supports 4 tilting bearings 5 sliding beams 6 Bridge 7 shunting bearings 7' shunting storage 7" sliding bearing 8 Support 9 Pusher 10 lifting cylinders 10 Pulling or pushing device 11 anchors 12 booms 13 Flange 14 sleds 15 lead 16 Floor 17 Piston rod 18 shunting track 20 collecting element 21 Long side 22 plate 70 medium plate 71 lower plate 72 upper plate 73 final section

Claims

[1] Device (1) for moving a bridge (6) with a sliding beam (5) on which a plurality of sliding bearings (7) are arranged, which are supported on an underside on the sliding beam (5) and on which a bridge (6) can be placed on an upper side, wherein a pushing device (9) is provided for moving the sliding bearings (7) with the bridge (6) along the sliding beam (5) and the pushing device (9) is fixed to the sliding beam (5) so that no horizontal forces are introduced into a pillar (2) or a support (3) below the sliding beam (5) as a result of the moving, wherein the sliding beam (5) is rotatably mounted on a tilting bearing (4) of a support (3) which can be positioned on a pillar (2). [2] Device according to claim 1, characterized by that several sliding bearings (7) are arranged one behind the other along a sliding track (18) on the sliding beam (5). [3] Device according to claim 1 or 2, characterized by that the frictional resistance of the sliding bearings (7) on the side facing the bridge (6) is greater than on the side facing the sliding beam (5). [4] Device according to one of the preceding claims, characterized by that the pushing device (9) has a lifting cylinder (10) which is mounted on a boom (12) on the sliding beam (5). [5] Device according to one of the preceding claims, characterized by that a support (8) is provided to insert a further sliding bearing (7') between an underside of the bridge (6) and the sliding beam (5). [6] Device according to one of the preceding claims, characterized by that a lubricant, in particular made of PTFE, is provided on the underside of the sliding bearings (7). [7] Device according to one of the preceding claims, characterized bythat a means for increasing the frictional resistance, in particular an elastomer, is provided on the upper side of the sliding bearings (7). [8] Device according to one of the preceding claims, characterized by that a collecting element (20) is provided at the end of the sliding track (20) for the sliding bearings (7). [9] Device (1) for displacing a bridge (6) with a sliding beam (5), on which a plurality of sliding bearings (7, 7') are arranged, which are supported on a lower side on the sliding beam (5) and on which a bridge (6) can be placed on a top side, wherein a pushing device (9) is provided for displacing the sliding bearings (7, 7') with the bridge (6) along the sliding beam (5) and the pushing device (9) is fixed to the sliding beam (5) so that no horizontal forces are introduced into a pier (2) or a support (3) below the sliding beam (5) by the displacement, wherein the sliding bearings (7, 7') each have a middle plate (70), a lower plate (71) and an upper plate (72), wherein the middle plate (70) is arranged offset to the lower plate (71) and the upper plate (72), so that a groove-shaped receptacle on one end face the sliding bearing (7) is designed,and an end portion (73) of the middle plate (70) of the adjacent sliding bearing (7') engages in the groove-shaped receptacle.,

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