SHOCK ABSORBER FOR EXPLOSION-PROOF OBJECTS Russian patent published in 2015 - IPC E04B1/92 F16F7/00 

FIELD: blasting operations.

SUBSTANCE: shock absorber for explosion-proof objects comprises a metal armoured frame with a metal armoured shell and the filler which is made in the form of a dispersion system air-lead. Lead is shaped in the form of crumb. The frame has fixed support tubes in the ends. In the coating of the explosive object three support rods are rigidly embedded with sheet-abutments in the upper part, which are telescopically inserted in the fixed support tubes in the metal armoured frame. In the upper part of the support rods the elastic-damping elements are fixed, one end of which is rigidly connected with its base to the sheet-abutments and the other is located freely. Each of the elastic-damping elements is fixed by screws on its base, designed in the form of a circular disc made of rigid vibration damping material such as Agate, on sheet-abutments rigidly connected to the rods. The base of the elastic-damping element is connected to the sleeve of elastomer, having a central hole through which the rod passes. The sleeve has three openings coaxial with the rod, in which the elastic elements are located, such as cylindrical coil springs, the upper end of which is connected by fasteners to the base, and the lower is in pressed condition and protrudes beyond the lower face of the sleeve. The movable plate rests against the lower ends of the elastic elements, which is pivotally connected with three elastic elements, e.g., compression springs, the second ends of which are pivotally connected to the friction sleeve covering the rod with tension.

EFFECT: invention enables to improve reliability of actuation of explosion-proof devices in case of emergency explosion.

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