Track sledding machine
The invention relates to a machine for use in track sledding operations. Machine ( 1 ) comprises a wagon ( 2 ) having adjustably carried therebeneath a multibladed plough ( 3 ). A rail clamp assembly ( 4 ) is included for suspending the track above the plough during the sledding operations.
1. A track sledding machine comprising:
a railway wagon having adjustably carried therebeneath a plough comprising at least one plough blade having a length greater than the width of the track ballast bed; and
rail clamps for suspending said track above said plough to allow continuous ploughing of ballast with movement of said wagon whereby said plough displaces said ballast beyond at least one side of the ballast bed, wherein said rail clamps comprise a subassembly pivotally linked to said wagon, the subassembly comprising a pair of longitudinally extending arms with clamps at each end of an arm.
2. The machine according to claim 1 , wherein said wagon is adapted for connection to a locomotive and comprises a horizontal frame with spaced apart bogies having a vertical frame thereon for mounting of machine components.
3. The machine according to claim 1 , wherein said wagon is of variable length.
4. The machine according to claim 1 , wherein said plough comprises a plurality of blades that are V-shaped in plan with the points of vees foremost in use.
5. The machine according to claim 4 , wherein the angle of the vee of said blades ranges from 60 to 120°.
6. The machine according to claim 1 , wherein said plough comprises a plurality of blades that are straight in plan but angled relative to the centre-line of said wagon.
7. The machine according to claim 5 , wherein the angle of said blades can be varied through a range of 10 to 60° from the plough centre-line.
8. The machine according to claim 1 , wherein said plough comprises from one to twenty blades.
9. The machine according to claim 8 , wherein said plough comprises four blades.
10. The machine according to claim 1 , wherein said machine includes at least one blade ahead of said plough for pre-cutting ballast.
11. The machine according to claim 10 , wherein said pre-cutter blades are in pairs with the blades of a said pair on opposite sides of said machine.
12. The machine according to claim 10 , comprising from one to ten pre-cutter blades or pairs of pre-cutter blades.
13. The machine according to claim 11 , comprising two pairs of pre-cutter blades.
14. The machine according to claim 1 , wherein said plough blades have a concave face.
15. The machine according to claim 1 , wherein said plough comprises a frame of at least two interconnected rails to which said blades are fixed.
16. The machine according to claim 1 , wherein longitudinally-extending skids are provided on the upper edges of blades or on a frame to which said blades are fixed.
17. The machine according to claim 1 , wherein said plough is adjustably carried beneath said wagon via arms of variable length fixed to at least the rear corners of said plough with upper ends of said arms fixed to wagon framework.
18. The machine according to claim 17 , comprising arms of adjustable length at each corner of said plough.
19. The machine according to claim 18 , wherein said adjustable arms are hydraulic rams.
20. The machine according to claim 18 , wherein said arms are attached to said plough via longitudinal slides.
21. The machine according to claim 1 , wherein at least one drawbar is provided that extends from the leading edge of said plough to said wagon.
22. The machine according to claim 21 , wherein said at least one drawbar is attached to said plough via a shear pin.
23. The machine according to claim 1 , wherein an offset ripper or scarifier tyne is included in said plough forward of the leading plough blade.
24. The machine according to claim 1 , wherein at least two pairs of rail clamps are provided, wherein one pair leads the plough and the another pair trails said plough with clamps of a pair acting on opposite rails.
25. The machine according to claim 24 , wherein said rail clamps are roller rail clamps.
26. The machine according to claim 1 , wherein said plough comprises a plurality of blades and is covered.
27. The machine according to claim 26 , wherein said covering comprises sheet material or grating spanning spaces between said blades at the upper edges thereof.
28. The machine according to claim 26 , wherein said covering comprises a combination of sheet material or grating spanning spaces between said blades at the upper edges thereof.
29. The machine according to claim 26 , wherein said first blade is replaced with a ramp to direct ballast over said plough.
30. The machine according to claim 1 , wherein said plough has a mesh covering to allow fines and other smaller ballast particles to fall into the plough and be discharged whilst larger ballast particles pass over the plough and are returned to track.
31. The machine according to claim 1 having a vibrator associated with said plough to enhance ballast flow over the plough and separation of ballast.
32. The machine according to claim 1 comprising a plurality of ploughs.