OPERATOR'S PROTECTIVE CABIN Russian patent published in 2018 - IPC E04H1/12 E04B1/82 

FIELD: security facilities.

SUBSTANCE: invention relates to safe instruments of labor, in particular during operators activities in emergency situations, accompanied by increased levels of dust and noise. Operator's protective cabin contains base, frame, life support equipment, window and door openings and enclosures in the form of acoustic panels, as well as ceiling part with luminaires. Base is installed on at least three pneumatic vibration isolators made in form of rubber-cord shell. Cabin frame is rigidly fastened thereto, made in the form of acoustic noise-absorbing panels made in the form of parallelepiped formed by the panel front and rear walls, between which the sound absorber is placed, and each of the walls has the U-shape. On the front wall slot perforation is made and its perforation coefficient is taken to be equal to or above 0.25. Front wall is made with glazing composed of sound-reflecting transparent panel made in form of polygon, for example, rectangle formed by U-shaped ribs made from vibration damping material. As the noise-reflecting translucent element panel from the extruded polycarbonate plastic solid sheet is used. Rear wall is located in the plane parallel with front wall plane. In one of the four side walls a door is made. Rear wall area is at least in 2 times larger than the front wall area, and adjoining the front wall side walls are made inclined relative to it and with glazing, and adjacent to the rear wall walls are perpendicular to it. Sealed cabin is equipped with life supporting system composed by artificial microclimate system with control board, as well as a workplace that includes a work table, a chair with vibration isolators in the form of elastomer plates attached to the legs of the chair, and a hanger for changing clothes. Life support system is made in form of artificial microclimate system with control panel, for example, in form of cartridge conditioner produced by General Climate. Elastomers used are "Vibroflex EP/25A” type or "VEP" type vibration damping plates. Noise absorber is composed of stiff and perforated walls with sound reflecting plies and sound absorbing materials plies arranged in two plies. Perforated wall has following perforation parameters: hole diameter 3-÷7 mm, perforation percentage 10÷15 %. As for the shape the holes can be circular, triangular, square, rectangular or diamond-shaped. In case of non-circular holes, it is necessary to consider as nominal diameter maximum diameter of circle inscribed in polygon. Layers of the sound-reflecting material are made with a complex profile consisting of uniformly distributed hollow tetrahedra that allow to reflect sound waves incident in all directions and which are located respectively at the rigid and perforated walls. Layers of sound reflecting material are made from heat-insulating material able to maintain preset microclimate in room. As the sound-absorbing material plates from the “Rockwool” type basalt-based mineral wool, or the “URSA” type mineral wool, or the P-75 type basalt wool, or glass wool with glass felt lining are used, wherein the sound absorbing element on its entire surface is lined with acoustically transparent material, for example, EZ-100 glass cloth or “Poviden” type polymer, or as the sound-absorbing material the polyester is used, or as the sound absorbing material, a porous fibrous or foam sound-absorbing material is used, which is made on the base of basalt or glass fibers or the open-celled polyurethane foam with protective, translucent sheath from fine glass fabric or an aluminized lavsan film, or as the sound-absorbing material, a porous, sound-absorbing ceramic material is used, having the bulk density of 500÷1000 kg/m³ and consisting of 100 parts by weight of perlite with the particles diameter of 0.5÷2.0 mm, 100÷200 parts by weight of one or more sintering materials and 10÷20 parts by weight of binding materials.

EFFECT: invention allows to increase the operator work efficiency due to reduction in the dust and noise levels.

1 cl, 8 dwg