Patent GB-805075-A (GB)
Title: Improvements in or relating to methods of and means for railway track replacement
IPC: E01B29/02
Filed: 1956-09-14
Abstract: 805,075. Laying railway track; cranes and conveyers on vehicles for loading. PRZIBU, R., and WASCHE, W. Sept. 14, 1956 [Sept. 15, 1955; March 27, 1956; July 19, 1956], No. 28136/56. Classes 78 (4) and 104 (2). [Also in Group XXXII] A method of replacing railway tracks is characterized in that the existing or old track is broken into sections which sections are lifted as whole frames and conveyed into cars running on the same track and then separated into ties and rails and at the same time in other cars forming part of the train sections of new track produced from rails and ties are conveyed over the first-mentioned cars to the train end where they are laid on the track free rail bed as the train travels along the track. The train comprises a bridge car 2 which lifts old sections of the track which sections are delivered to the two preceding cars 6 where they are broken down into ties and rails the rails being stored in the next two preceding cars 7 and the ties in the two cars 8. The car 9 is provided with a device 10 which delivers ties carried on the floors of the cars 11 to beneath rails carried overhead of the cars 11 and delivered overhead to the car 9 where the ties and rails are assembled as complete track sections. The newly assembled track section is delivered from the car 9 overhead to the car 2 where the section is attached by a wire rope 80 to the end of the existing track so that as the train is moved forward the new track section slides down an inclined portion 13 of the car 2 on to the rail bed 81 from which the old track section has been removed. The old track sections are lifted by winches 25 carried on trolleys 23, 24 and are delivered on to the floors 27 of the cars 6 by the trolleys running on overhead rails 22 and 28. After the old track sections are dismantled the ties are conveyed by overhead trolleys 35 and winches 25 along the rails 28 to the cars 7 and the rails to cars 8 by means of a conveyer comprising rollers 37, Fig. 5, arranged at the floor level on each side of the cars 6, 7 and 8, every third or fourth roller of which is driven by an electric motor 38. The new ties 45 are stored on the floors of cars 11, Fig. 2, and are delivered by winches 44, Fig. 3, mounted on trolleys 43 running on an overhead track 42 to an endless conveyer 40. The conveyer 40 feeds the ties 45 on to a further endless conveyer 41 provided with followers 46 which deliver the ties 45 at the required spacing to beneath the new rails 39 delivered from above the cars 11 on rollers to above the car 9. The ties 45 are attached to the rails 39 above the car 9 and the completed track sections are delivered along a slide track 34 above the cars 6, 7 and 8 to the car 2 where they are eventually deposited on the rails beds as previously described. The car 2 is provided with a scraper device 32 which levels the rail bed 81 and a roller 14 which when lowered into position by hydraulic cylinders 29 on to the rail bed 81 lifts the rear bogie 4, of the car 2 off the track 1. When the car 2 traverses a curve the roller 14 is steered by a mechanism 30 driven by a motor 31 controlled by an operator on the train. In the arrangement shown in Fig. 6 in which rails are bent for curved portions of a track the car 9 is provided with a bogie 51 at each end and a central bogie 50 and the car is divided into two parts 9a and 9b. The upper structure above the bogies 50 is provided with frames 52 which carry on a transverse beam two flanged rollers 59 which straddle the rails 39 and are spaced a distance equal to the track width. A similar frame 52, 53 is arranged above the centre bogie 50 and carries a flanged roller 59 which straddles the inner rail 39 of the curve and a shoe 54, Fig. 8, which straddles the outer rail 39 of the curve so that the rails 39 are bent to the same curvature as the old track. The shoe 54, Fig. 8, is mounted on a transverse beam 53 and is provided with a fine adjustment device 55 to provide a slight gauge enlargement on the curved track. A similar requirement is met when guiding the new track across the bridge truck 2 on a curved portion of the track and in the modification shown in Fig. 9 a frame 58 of sufficient length to clear the end of the ties 45 is mounted in guides 56, 57 attached to the upper flanges of the bridge beams 5. The frame 58 carries flanged rollers 59 which straddle the rails 39 and the frame 58 is moved transversely to the car 2 by a rack 62 and a manually or motor operated pinion 61. In this arrangement guide rails 63 are provided on the beams 5 for the trolleys 23, 24. In a further modification shown in Fig. 10 an endless conveyer 64 provided with a scissors-like lifting device 68 is provided in lieu of the trolleys 43 and tracks 42 to lift the ties on to the endless conveyer 40. In the arrangement shown in Fig. 12 the rails 39 rest on supports 70 in turn supported on transverse beams 71 on the upper portion of the cars 11. At each end of each support 70 feeding rollers 72 spaced to the track gauge and inclined to the required angle are provided to feed the rails 39 to the device 10 on car 9. Collars 73 are provided on the rollers 72 to space the rails 39 at the required distance. Some of the rollers 72 may be motor driven. A further set of rails 39 may be supported on bars 76 interconnecting two arms 75 pivotally mounted in yokes 74 so that when the lower set of rails 39 has been used the upper set may be lowered into position on the bars 70 by removing bolts 77 and tilting the arms 75. In a further modification shown in Fig. 14 the slide track 34 from the device 10 to the car 2 is replaced by a roller conveyer. The rollers 82 of which are spaced a distance slightly greater than the ties 45 and are driven in a plurality of groups of rollers each group being driven by a motor 84 and the gear chain 83. The train may be provided with a steam or internal combustion engine driven generator set at the rear of car 9 to provide the current required for the various driving motors.