FIELD: acoustics; 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. This is achieved by the fact that in the operator’s cabin, operating under conditions of high dust content and high noise levels, containing a base, a frame, life support equipment, window and door openings and fences in the form of acoustic panels, the base is installed on at least three pneumatic vibration isolators, made in the form of a rubber cord shell, and the cabin frame is rigidly attached to it, made in the form of a polygonal prism with ribs perpendicular to the base of the cabin, and consisting of a front wall, with glazing made of a noise-reflecting translucent panel, a ceiling part with luminaires, a rear wall located in a plane parallel to the plane of the front wall, and four side walls, one of which has a door, while the area of the rear wall is at least 2 times larger than the front wall area, and the side walls adjacent to the front wall are inclined with respect to it and with the glazing, and those adjacent to the rear wall are perpendicular to it, and the cabin is sealed and equipped with a life support system in the form of an artificial microclimate system with a control panel, and also 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, acoustic noise-absorbing panel is made in the form of sound-absorbing structure, consisting of rigid and perforated walls, between them there is a multi-layer sound-absorbing element made in the form of five layers, two of them, adjacent to the walls, are sound-absorbing layers of materials of different density, while three central layers are combined, the axial layer being made sound-absorbing, and the two symmetrically arranged adjacent layers being made of a sound-reflecting material of a complex profile consisting of uniformly distributed hollow tetrahedra, while each of the perforated walls has the following perforation parameters: hole diameter – 3÷7 mm, perforation percentage - 10÷15 %, and as a sound-absorbing material, "Rockwool" type basalt-based mineral wool plates, or "URSA" type mineral wool plates, or P-75 type basalt wool plates, or glass wool plates with glass-felt lining is used, while the sound-absorbing element over its entire surface is lined with an acoustically transparent material, for example EZ-100 type glass fiber or "Poviden" type polymer.
EFFECT: increase in the efficiency of work of the operator due to the reduction in the levels of dust and noise.
1 cl, 9 dwg
