UA98390C2 - Goalposts - Google Patents

Abstract

A goalposts consists of the vertical posts interconnected with tubular cross-bar, the frame construction placed on the ground consisting of two longitudinal elements connected with the vertical posts, the transverse element, goal net, and the line of the goalposts. The tubular cross-bar made in longitudinally split design consists of two parts. The upper immobile part is connected rigidly with the vertical posts while the lower movable part is hinged onto the immobile part at three sites being spring-loaded against the immobile part in diametric direction perpendicularly to the section plane allowing for being displaced relative to the latter. Longitudinally, the section plane of the cross-bar is located at an acute angle relative to horizontal line against the goalposts. The longitudinal elements are equipped with the optoelectronic relays installed at the brackets in vertical plane at the distance from the line of the goalposts inwards the goal net and at the distance of at least a ball radius from the field surface. The distance between the goal line and the beam of the first optoelectronic relay is not less than the diameter of the ball. The distance between the parallel beams of the optoelectronic relays inwards the goal area is lee than the diameter of the ball. Inside the tubular cross-bar, at least three sensors are installed that are connected with the control unit and the optoelectronic relays. The sound and light alarms installed onto additional elements interact with the control unit.