TAMPING MACHINE FOR COMPACTING THE BALLAST BED OF A TRACK

Abstract

A tamping machine (1) for compacting the ballast bed of a track (9), has tamping units (4) for tamping under a track, with a lifting-straightening device (2) arranged between running gears (8), preferably in front of the tamping units (4) in the working direction (C), for lifting and straightening tracks and railroad switches, having at least one height-adjustable lifting roller (6) and having at least one lifting hook (7) that is height-adjustable independently of the lifting roller (6), the lifting roller (6) and the lifting hook (7) being arranged on a common console (31) that is guided displaceably transversely to the longitudinal axis (L) of the tamping machine by means of an adjusting drive (17). The console (31) is arranged on a guiding slide (10), with which it is displaceable transversely to the longitudinal axis (L) of the tamping machine along a transverse guide (16), and the console (31) is mounted on the guiding slide (10) so as to be pivotally adjustable about a pivot axis (30) parallel to the longitudinal axis of the tamping machine by means of a swivel drive (12).

Claims

1. A tamping machine for compacting the ballast bed of a track, said tamping machine comprising: tamping units configured to tamp under the track; a lifting-straightening device arranged between running gears configured to lift and straighten tracks and railroad switches; the lifting-straightening device having at least one height-adjustable lifting roller and at least one lifting hook that is height-adjustable independently of the lifting roller; the lifting roller and the lifting hook being arranged on a common console that is guided displaceably transversely to a longitudinal axis of the tamping machine by an adjusting drive; wherein the console is arranged on a guiding slide, with which the console is displaceable transversely to the longitudinal axis of the tamping machine along a transverse guide; and wherein the console is mounted on the guiding slide so as to be pivotally adjustable about a pivot axis parallel to the longitudinal axis of the tamping machine by a swivel drive.

2. The tamping machine according to claim 1, wherein the adjusting drive is a transverse displacement cylinder with a displacement travel sensor, the lifting roller is height-adjustable by a vertical lifting cylinder with a stroke path sensor, and the lifting hook is height-adjustable by a vertical lifting cylinder with a stroke path sensor.

3. The tamping machine according to claim 1, wherein a rotation angle sensor is operatively associated with the swivel drive and/or a stroke path sensor is operatively associated with a swivel cylinder of the swivel drive.

4. The tamping machine according to claim 2, wherein the displacement travel sensor of the displacement cylinder, the stroke path sensor of the vertical lifting cylinder for the lifting roller, and the stroke path sensor of the vertical lifting cylinder for the lifting hook are each integrated in the associated cylinder.

5. The tamping machine according to claim 1, wherein a transverse displacement path of the transverse guide and a swivel range of the swivel drive are extended so that a rail can be gripped with the lifting roller both from the outside of the track and from the inside of the track.

6. The tamping machine according to claim 1, wherein a swivel force limiter is operatively associated with the swivel drive so as to provide overload protection.

7. The tamping machine according to claim 1, wherein the lifting-straightening device is arranged between the running gears and in front of the tamping units in a working direction.

8. The tamping machine according to claim 2, wherein a rotation angle sensor is operatively associated with the swivel drive and/or a stroke path sensor is operatively associated with a swivel cylinder of the swivel drive.

9. The tamping machine according to claim 8, wherein the displacement travel sensor of the displacement cylinder, the stroke path sensor of the vertical lifting cylinder for the lifting roller, the stroke path sensor of the vertical lifting cylinder for the lifting hook, and the stroke path sensor for the swivel cylinder are each integrated in the associated cylinder.

10. The tamping machine according to claim 5, wherein, the rail can be gripped with a lifting hook having a T-shaped foot.

11. The tamping machine according to claim 2, wherein a transverse displacement path of the transverse guide and a swivel range of the swivel drive are extended so that a rail can be gripped with the lifting rollerboth from the outside of the track and from the inside of the track.

12. The tamping machine according to claim 3, wherein a transverse displacement path of the transverse guide and a swivel range of the swivel drive are extended so that a rail can be gripped with the lifting rollerboth from the outside of the track and from the inside of the track.

13. The tamping machine according to claim 4, wherein a transverse displacement path of the transverse guide and a swivel range of the swivel drive are extended so that a rail can be gripped with the lifting rollerboth from the outside of the track and from the inside of the track.

14. The tamping machine according to claim 2, wherein a swivel force limiter is operatively associated with the swivel drive so as to provide overload protection.

15. The tamping machine according to claim 3, wherein a swivel force limiter is operatively associated with the swivel drive so as to provide overload protection.

16. The tamping machine according to claim 4, wherein a swivel force limiter is operatively associated with the swivel drive so as to provide overload protection.

17. The tamping machine according to claim 5, wherein a swivel force limiter is operatively associated with the swivel drive so as to provide overload protection.

Description

BRIEF DESCRIPTION OF THE INVENTION

[0023] In the drawing, the object of the invention is shown, for example. It shows

[0024] FIG. 1 a side view of a track-mounted track tamping machine,

[0025] FIG. 2 a view of a roller tong according to the state of the art,

[0026] FIG. 3 a view of a lifting-straightening unit according to the state of the art,

[0027] FIG. 4 a lifting roller engaging on both sides of the rail,

[0028] FIG. 5 a highly simplified pivoting lifting roller to illustrate the engagement situation at a rail head, and

[0029] FIG. 6 a view of a console that can be swiveled according to the invention using a lifting roller with lifting hook.

WAYS TO CARRY OUT THE INVENTION

[0030] A tamping machine 1 (FIG. 1) has a tamping unit 4 and a track lifting-straightening unit 2 with a lifting cylinder 5, with a roller tong with lifting roller 6 and with a lifting hook 7. The lifting-straightening unit can be moved in the longitudinal direction of the track by means of a hydraulic cylinder 11. The switch tamping machine can be moved along the track via running gears 8. The tamping machine 1 is controlled from the working cab 28 arranged in front of the tamping unit 4 in the working direction C. The tamping machine 1 can be moved along the track in the longitudinal direction. The working cab 28 and the driver's cab can be accessed via side doors 29.

[0031] The view according to FIG. 2 of a known (state of the art) embodiment of a lifting-straightening unit 2 shows the roller gripper 6, the roller gripper locking cylinder 12, the lifting cylinder 5 with the lifting force FH, the rail 9 and the guide straightening wheel 14.

[0032] An embodiment according to the state of the art of the lifting-straightening unit 2 is shown in FIG. 3, in particular the common support console 10, the vertical guide cylinders of the lifting roller 3 and the lifting hook 13 with stroke movement V with stroke path sensors 20, 21, the common transverse guide 16, the displacement cylinder 17 with displacement movement H and displacement travel sensor 22, the guide straightening wheel 14, the lifting roller 6, the lifting hook 7 in the position closed at the rail head and in the position closed at the rail foot 19, the rail 9, the lifting cylinder 5 with the lifting force FH.

[0033] The view according to FIG. 4 shows the roller tongs with lifting roller 6, whereby the transverse displacement path H of the transverse guide 16 and the swivel range of the swivel drive 12 are extended in such a way that a rail 9 with the lifting roller 6 can be gripped both from the outside of the track and from the inside of the track. If the guiding slide 10 is sufficiently displaced by the console 31, the lifting roller 33 can also engage the inside of the rail at the rail head. A straightening wheel 14 guides the lifting-straightening device on the rail 9.

[0034] FIG. 5 shows a highly simplified roller tong once in the closed and once in the open state 15. In designs of rail fasteners that build very high 26, a horizontally adjusted roller tong 23 would lead to conflicts 25. If this horizontally added roller tong 23 remained closed during the run-up, then it would damage the fasteners 26. If an insulated joint 24 comes up then the closed roller tongs 23 would suddenly be jerked open, which would lead to high forces and damage.

[0035] FIG. 6 shows the lifting-straightening unit 2 of a tamping machine according to the invention, with the transverse guides The lifting-straightening device 2 for lifting and straightening tracks and railroad switches of the tamping machine for compacting the ballast bed of a track is equipped with at least one height-adjustable lifting roller 6 and with at least one lifting hook 7 which is height-adjustable independently thereof, wherein the lifting roller 6 and the lifting hook 7 are arranged on a common console 31 which is displaceably guided by an adjusting drive 17 transversely to the longitudinal axis L of the tamping machine. The console 31 is arranged on a guiding slide 10 with which it can be displaced transversely to the longitudinal axis L of the tamping machine along a transverse guide 16. In addition, the console 31 can be swivelled by a swivel drive (12), in this case a hydraulic cylinder, about a pivot axis 30 parallel to the longitudinal axis of the tamping machine.

[0036] The adjusting drive 17 is a transverse displacement cylinder with a displacement travel sensor 22, the lifting roller 6 is height-adjustable by means of a vertical lifting cylinder 3 with stroke path sensor 20, and the lifting hook 7 is height-adjustable by means of a vertical lifting cylinder 13 with stroke path sensor 21. A stroke path sensor 32 is assigned to the swivel drive 12, in this case the swivel cylinder.

[0037] The console 31 is mounted with the swivel drive 12 on the guiding slide 10 so that it can be swiveled about the pivot axis 30 parallel to the longitudinal axis of the tamping machine.

[0038] The displacement travel sensor 22 of the displacement cylinder 17, the stroke path sensor 20 of the vertical lifting cylinder 3 for the lifting roller 6 and the stroke path sensor 21 of the vertical lifting cylinder 13 for the lifting hook 7 and the stroke path sensor 32 for the swivel cylinder 12 are each integrated in the associated cylinder.