Patent GB-756095-A (GB)
Title: Improvements in or relating to a truck-mounted material handling device
IPC: B21J13/10
Filed: 1954-05-07
Abstract: 756,095. Forging. VULCAN RESEARCH CORPORATION. May 7, 1954 [May 8, 1953], No. 13378/54. Class 83 (4). [Also in Groups XII and XXX] A truck-mounted material handling device comprises a self-propelled wheeled truck of the type used for transporting articles, wherein are provided load-lifting mechanism and a load carrying arm carried by the load lifting mechanism, resilient stabilizing means being provided extending between and connected with the load lifting mechanism and the arm. The invention is shown applied to a billet manipulator and furnace charger in which the manipulator comprises a lift truck having a tubular frame 9, and a heat shield 12. A peel loader has an arm mounted to pivot about a horizontal axis, and rearwardly extending arms 98 with counterweights 99 are mounted on a cross member 96. Upright channels 82 are mounted to pivot on the axle 5 of the front wheels and are tilted by a hydraulic cylinder, pivoted to the vehicle at 87 and to the uprights at 84. The cross head of the manipulator is guided in the channels and comprises members 88, with transverse members 89, 90. The transverse member 96 is pivotally connected at 91 to the bottom member 90. The piston rod 94 of a hydraulic cylinder 93 is connected to the members 89 through members 95. Inclined members 100 extend from the member 96 and are joined by a member 101. The members 101 have a pair of lugs 102 through which passes a cross member of a yoke having members 105 passing through a bar 106 and resiliently mounted by springs. A rod 111 connected to the cross head at 112 passes through the bar 106 and a spring 114 surrounds the rod above the bar, a nut being connected to the rod below the bar and above the spring. The cross member 96 has a plate 16, Fig. 6, to which is welded at 20 a ring 21 secured by bolts 22. The support for the peel carrier comprises a cylinder 24 which has a flange 25 with holes for securing to the plate 16 by the bolts 22. The cylinder telescopes over a flange 23 on the ring 21. A bearing race 31 is disposed at one end of the cylinder. The cylinder is bored for a lubrication fitting 33. The peel carrier 34 has a cylindrical end part 35 mounted for rotation in a bearing 36 within the race 31. A plate 37 is bolted to the end of the peel carrier by bolts 38. Beyond the extremity 41 of the cylinder 24 the carrier has a flange 42 with a flange 43 with a cavity for rollers 45 bearing on the outer face of the cylinder 24. A sealing ring 46 is provided. For turning the carrier a sprocket 47 is welded to the flange 43. A sprocket chain 49 passes round sprocket 47 and driving sprocket 117 driven by a motor 118 on the top of the peel. The carrier has a portion 50 of reduced diameter. Ports 51 extend through the peel carrier. Sealing rings 52, 53 seal the carrier to the cylinder and spacing rings 54 are disposed between them. A nut 55 is threaded on to part 50 of the carrier and a lock nut 56 holds it and the left-hand sealing ring in position. Fluid passages 57 are provided in the cylinder 24. The peel operator 58 comprises a piston 59 having a rod 60 connected thereto. A sealing unit is provided for the carrier. A cup 62 is threaded in the end of the carrier, and has a sealing ring 65. A packing ring 68 seals against the rod 60, the ring having a re-entrant portion 69 to receive a tool for withdrawal. The ring is pressed by a ring 70 threaded into the cup 62. A seal 72 is provided. Wrench-engaging lugs 73 are provided on the cup and lugs 74 on the ring 70. The peel 75 comprises a member having a flange 77 bolted to the carrier by bolts 78. A passage 80 is provided for fluid leak. The peel has tongs comprising a mounting member 120 with pivoted jaws 123 having pivot and slot connection 124 with the rod 60. The piston rod 94 may have a resilient connection with the cross head by means of a resilient block. Similarly the cross head and peel may have a resilient mounting. The hydraulic cylinder 86 may have a resilient mounting with the uprights 82. The uprights have a strap pivotally mounting a block through which the piston rod 85 passes. A spring surrounds the rod on either side of the block and presses against a nut on the rod.