MOBILE CONCRETE-PLACING MACHINE AND METHOD OF ITS OPERATION Russian patent published in 2000 - IPC

FIELD: railway construction technology. SUBSTANCE: machine is intended for embedding rail fastenings in concrete at building railway track structure with concrete slab and without use of crushed-stone ballast. Machine has gantry frame 1 with travel mechanisms 5. Installed on longitudinal members 3 of gantry frame are rails 6 for hoisting crane 7. Located on gantry frame 1 is multiplicity of concrete-placing frames 8 with supports 11 for shuttering 12 for clamping devices 13. Concrete-placing frames 8 are provided with concrete delivery pipelines 14. In operation of machine, concrete-placing frames 8 can be repositioned so as to adjust operating procedure of concrete-placing frames 8 according to following scheme of repositioning "x, 1 to (x-1)", "(x-1), x, to (x-2)". Application of aforesaid embodiment of machine allows for embedding rail fastenings in concrete with high accuracy. EFFECT: higher efficiency. 3 cl, 3 dwg