RU95120432A - BEARING TUBE-SHELL AS A BODY OF ROTATION FROM COMPOSITE MATERIALS, METHOD AND CORRECTION FOR ITS MANUFACTURE - Google Patents

Claims (3)

1. The supporting pipe-shell in the form of a body of revolution made of composite materials, containing a power frame of a cellular structure, formed from the words of systems of intersecting spiral and annular ribbons repeating along its wall thickness, forming stiffeners with crosshairs, with external covering layers, respectively, made of unidirectional threads fastened with a cured polymer binder, characterized in that its power frame is provided with intersecting spiral and ring systems located between its layers tapes forming its stiffeners, duplicated with them on the width of stiffeners, including transitional ribs between annular ribs, congruent damper-absorbing layers of elastic material with a high attenuation decrement of sound waves such as rubber, polyurethane, with the arrangement of external threads covering layers at an angle of 80 - 90 ^o to the axis of symmetry of the shell. 2. A method of manufacturing a pipe-sheath according to claim 1, comprising coating the core with a rubber-like material with mutually intersecting grooves, laying in the grooves of intersecting spiral and annular tapes of unidirectional threads impregnated with a polymeric binder to form a cellular structure frame, applying forming elements to them and heat treatment with subsequent removal of the core and rubber-like coating, characterized in that between the layers of the systems of intersecting spiral and annular tapes when laying them on the backside In these directions, intermediate shaping elements are introduced under the stacking tapes of unidirectional threads in the form of continuous tapes of an elastic material such as rubber, polyurethane, with the application of external shaping elements for crimping them in the form of threads with their location at an angle of 80 - 90 ^o to the axis of symmetry of the core.  3. The mandrel for implementing the method according to claim 2, comprising a core and a rubber-like material covering it with mutually intersecting grooves for laying intersecting spiral and annular ribbons of unidirectional threads to form stiffening ribs of the shell-pipe frame, characterized in that the rubber-like coating core the material contains intersecting spiral and annular ribbons located in its grooves with transitions between annular ribbons with intermediate continuous forming ribbons from elastic go-elastic material such as rubber, polyurethane between them, duplicated with tapes.