CS244272B1 - Assembly hinge of the completed stair arm - Google Patents

Abstract

The assembly hinge of the completed stair arm consists of a longitudinal member and two arms arranged perpendicularly at its ends, with fastening elements formed as screws passing through the arms at the ends of the arms for screwing into nuts at the appropriate locations of the completed stair arm. The tilting of the stair arm occurs automatically under the influence of gravity as a result of the eccentric location of the hinge, while the influence of the gravitational force is braked by hydraulic systems; the hinge allows the stair to be lifted in a horizontal position without shifting forces and the completed stair arm to be precisely seated

Description

The invention relates to a mounting hinge of a completed stair arm, generally consisting of a concrete arm with a terrazzo surface and two screwed terrazzo shims, in particular for the assembly of prefabricated houses.

Up to now, the assembly of prefabricated stair arms used in the assembly of prefabricated houses has been carried out using ropes of uneven length or with the aid of, for example, a support frame and the like. stair arms and mainly for plucking nuts embedded in terrazzo plates. Such an arrangement has the disadvantage that the first load is transmitted by both upper nuts. There are also cracks caused by bending stress when lifting the shoulders.

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The assembly hinge of the completed stair arm according to the invention, consisting of a longitudinal member and two fixed legs, removes the above mentioned disadvantages, the longitudinal member being provided at its upper side in the front half with a lifting eye bracket and a hydraulic cylinder. half of the height of the longitudinal member and the lower end of the hydraulic cylinder is pivotally mounted in a grip on the upper side of the longitudinal member in its rear half, and the space above and below the hydraulic cylinder piston is connected by a hydraulic system consisting of a throttle, check valve and shut-off valve According to the invention, the arms are preferably arranged perpendicular to the longitudinal axis of the longitudinal member and at each end of said arms a fastening element, preferably designed as a bolt, extends through the arm for screwing in, is provided They are inserted into the nuts in the respective places of the completed stair arm.

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The stair arm is tilted to the mounting position by gravity due to the eccentric location of the hinge, and the gravity force is braked by the hydraulic system. The hinge allows the completed stair arm to be seated accurately and the stringer lifted horizontally without shifting forces. No physical effort is eliminated and all dangerous manipulations are eliminated *

The mounting hinge of the complicated stair arm according to the invention is shown in the attached Figures 1,2 (axonometric view), showing in FIG. 1 the mounting hinge according to the invention in the starting position and FIG. Referring to FIG. 1, the hinge member 1 is provided with an arm 2 at one end thereof and an arm 2 * disposed preferably perpendicularly to the longitudinal axis of the longitudinal member at the other end thereof. * 29, 29 *, The longitudinal X in its rear half on the upper surface is provided with a 2 P ^r ° grip on the lower end of the hydraulic cylinder 2.> whose piston rod 2 (Fig. 2) is mounted on the pin <5 13, arranged on. The space below the piston and above the piston of the hydraulic cylinder 6 is connected by a hydraulic system 21 consisting of a throttle valve, a non-return valve and a shut-off valve connected to each other by piping.

When working with the hinge according to the invention, the operator hangs the hitch eye with the piston rod retracted by the hydraulic cylinder rod on the crane hook, íθ puts the hinge horizontally on the completed stair arm lying on top of the stack of components. The crane starts to lift the hinge with the stair arm attached, starting with the moment of gravitational forces due to the hinge eccentricity. The time of movement of the piston from one position d to the other is always shorter than the time required to move the stair arm from the landfill to the stowed space in the rainwater space. The operator will set up the stair arm on the intermediate landing and landing. Then Prem £ hinge _with three to landfill

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- 3 panels, laid and the lifting eye returns to the starting position *

This makes the hinge ready for reuse *

The assembly hinge of the completed stair arm according to the invention is structurally simple and not very expensive * Handling it is relatively simple, simpler and at the same time considerably safer than in other known and used methods * The assembly hinge of the completed stair arm according to the invention can be used for all technologies in the building industry, it is only necessary to adjust the deflection of the lifting eye, affecting the maximum inclination of the suspended part *

Claims (1)

The assembled hinge of a completed stair arm according to the invention consisting of a longitudinal member and two fixed arms, the longitudinal member being provided at its upper side in the front half with a lifting eye bracket and a hydraulic cylinder whose piston rod is pivotably mounted on a pin arranged above the the lower end of the hydraulic cylinder is pivotally mounted in a grip on the upper side of the longitudinal member in its rear half and the space above and below the piston of the hydraulic cylinder is interconnected by a hydraulic system consisting of a throttle, non-return valve and shut-off valve 2 *) are preferably arranged perpendicular to the longitudinal axis of the longitudinal member (1), and at each end of said arms (2,2 *) there is provided a fastening element (28,28 * 29,29 *) preferably formed as a bolt passing through the arm for screwing into the nuts in the accessory NYCHA locations preassembled stair *