Patent GB-820802-A (GB)
Title: A track lining machine and method of using same
IPC: E01B33/02
Filed: 1957-01-10
Abstract: 820,802. Track aligning. RAILWAY MAINTENANCE CORPORATION. Jan. 10, 1957 [July 9, 1956], No. 1035/57. Class 104 (2). A method of lining track comprising moving a track lining machine having wheels moving on the track to the position where aligning is necessary, retracting the wheels on at least one side of the machine to provide an unobstructed view along a rail to be aligned and lining the track. The machine consists of a frame of channel members 7, 8 supporting fuel tanks 9 and an engine 10 driving pumps for fluid for hydraulic cylinders and motors. A motor 11 drives the rear axle through a chain and sprocket. The frame supports an anchoring and track lining assembly 1, retractor mechanism 4, 5 for two wheels, a rail clamp 2, a rear jack 87, a gauge sight bar 93 and hydraulic cylinder 131 for rotating the machine. The anchoring and track lining assembly is similar to that described in Specification 820,801. The assembly is raised and lowered by an hydraulic cylinder 24 secured to a cross-member 23 and pivoted to a plate 31 which has wing plates 31a with sleeves 31b sliding on columns 21 between cross-members 22, 23. A digging head 27 is rotated by a motor 25, is raised and lowered by hydraulic cylinders 28 pivoted to the head and secured to the plates 30, 31, the rods being pivoted to the platform of the motor 25, and is angularly movable by cylinders 29 pivoted to plates 30, 31. The retraction mechanism for each of two wheels actuated by hydraulic cylinders 39 comprises a shifter land 33 and a sliding axle 34 connected to a retracting arm 36, a clevis 41 pivoted to the arm is secured to the cylinder 39 and the arm is pivoted to a bracket on the frame. The arm is movable in a slot 42 in a bracket 43 and is locked in non-retracting position by a pin 45 passing through a hole in the bracket and arm and secured in locking position by a latched lever 52. The rail clamp 2 comprises a pair of scissor-like jaws operated by a handle. The wheels on one side of the vehicle are raised by a cylinder 87 operating a rear jack which lowers a shoe 89 into contact with the ground. The gauging sight bar 93 carries targets 95, the bar being swung horizontally and vertically by arms 100 pivoted to a support 102 which has pivoted a pair of arms 103 pivoted to the plate 30. When the anchoring and lining machine 1 is lowered into the crib, the bar 93 contacts the top of the rails and the target 95 is urged by a spring 99 into contact with the rail. The sight bar is used with a telescope and manual target to establish a straight line for the track. The telescope is locked to swing in the vertical direction. The lining machine is moved away. A viewer indicates to the machine driver when the target moves in the field of view. At these points it is necessary to align the track. The machine can be rotated by operating a cylinder 131 pivoted at the upper end in a casing 134 so that the bottom plate 133 bears on the ground and raises the wheels from the track. In operation, the machine is wheeled into position, the hydraulic cylinder 24 is actuated until the assembly 1 is lowered on to the ballast. The digging head 27 is rotated by the motor 25 and the casing 26 is driven into the ballast by hydraulic cylinders 28 to anchor the machine. The two front wheels are raised from the track by this means. The clamping jaws are actuated to grip a rail by operating the handle, the rear jack is actuated by the cylinder 87 to raise the rear wheel. The anchoring assembly may be tilted by the hydraulic cylinders 29. The locking pins 45 of the retraction mechanism are disengaged by the handle 52, the wheels are retracted on one side by the cylinders 39 and the track is aligned by the feet 32 pivoted to the plates 30, 31 and actuated by hydraulic cylinders 120 to press against a rail and displace it laterally. A reservoir 107 supplies fluid to pumps 110 and 114 which supply pressurized fluid to right and left valve banks 19, 20. The left valve bank 20 through valve 116 supplies fluid to motor 11 and through valves 117, 118 and 119 supply fluid to hydraulic cylinders 24, 28 and 120. The right valve bank 19 through valves 122, 124, 125 and 126 supply fluid to hydraulic cylinders 39, 87, 29, 127, valve 123 supplies fluid to motor 25. When cocks 130 are open and cocks 130a, are closed, fluid is supplied to hydraulic cylinder 131. All the hydraulic cylinders and motor 11 have return lines to the valves. The right and left valve banks have return lines to the reservoir. The motor 25 has a direct return line to the reservoir. The valves 116 to 119, 122, 124 to 126 are three positioned manually-operated control valves, the third position being for reverse motion. The valve 123 is a two positioned manually-operated valve, the second position stops flow of fluid to the motor 25 which therefore stops.