SU1071676A1 - Apparatus for erecting the span structure of knock-down bridge - Google Patents

Abstract

A DEVICE FOR INSTALLATION OF A PROGRAMMING BRIDGE YEAR STRUCTURE, including roller beams, a portal frame, an avanbek and an anti-balance device, and Dt ee so that, with the Aim of ensuring the possibility, the spans of the spans and avants -: Bekas that have inclined upper ones, along with themselves, counterbalanced equipment is equipped with an arbor mounted on asaH6 iim or the assembled part of the platform, with a longitudinal movable platform with a hook, hinge connected with portal racks,: The frames are made along the length of the guide rails under the grip) and are detachably secured with the lower ends of the nakatochny beams, while the rolling beams are located under the bottom of the catfish of the avanbek or the assembled part (L of the span structure and

Description

The invention relates to bridge construction, in particular to the installation of span structures of collapsible bridges erected mainly in mountain conditions. A device for mounting a span of a collapsible bridge, including assembly trolleys, avanbek and a counterweight mounted on a console attached to the shore end of the span, is known. The disadvantage of this device is the need to organize an assembly site longer than the length of the span, which is practically unacceptable mountain conditions and x. Most close to the technical essence and the achieved effect to the proposed, is a device for mounting the span of the boron bridge, including nakatochny beams with rollers, a portal frame, avanbek and counterbalanced equipment. In the known device the portal frame is fixed on the base on which on both sides of the frame, massive elements of the anti-counterweight device, with the beams reinforced in the brackets of the gantry racks below the top of the suspended span C2. A disadvantage of the known device lies in the impossibility of sliding the span and the avanbeck with a sloping top skeleton due to fixing the elevation position of the upper anus of the advancing span between the nakatochnymi beams and the transom of the portal frame. by ca .. This goal is achieved by the fact that in the device for the installation of the span of the collapsible bridge, including the knurling ba a ki, a portal frame, an avanbeck and a counterweight device, a counterweight device equipped with a longitudinally movable platform mounted on the avanbeck or the assembled part of the span, with grippers hinged to the stands of the portal frame, the stands of the portal frame being made along the lengths of the grips and detachably fastened with the lower ends on the nakatochny beams, while the nakatochny beams are located under the lower som avanbek or assembled part of the superstructure. Figure 1 shows the proposed device, a General view; in FIG. 2, section A-A in FIG. 1; FIG. 3 is a section BB in FIG. 1; Fig. 4 is a section B-B. Fig. 3, A device for mounting a span (not shown) includes kneading beams 2 provided with rollers 1, interconnected by spacers 3 and provided with a coastal knee support 4 at one end, and - height-adjustable base plate 5, gantry frame 6, avan & and counterweight 8, Counterweight 8 is provided with a longitudinal-movable platform 9 mounted on the avanbec 7 or the assembled part of the span (not shown) with hinges 10 pivotally connected to the page Holes 11 of the cooling frame 6, Frame stands 11 are made along the length of the guides 12, for example, grooves, under the clamps 10 and detachably fixed by the lower ends through the lugs 13 on the beams 2. Under the beams 2 are located below the bottom of the avanbek 7 or of the assembled part of the superstructure i. To ensure the stability of the posts 11, the portal frame is provided with struts 14, fastened lower ends through the lugs 15 on the rolling beams. When advancing the avanbek and the span, the counterweight adaptation 8 moves on the platform 9 along the upper inclined su-vanbek or span. At the same time, due to the movement of one notch of the grippers 10 along the guides 12 of the struts 11, the high position of the rotary tool with the platform 9 is altered and it overruns the inclined top surface of the avanbek or the flying structure. The application of the proposed device provides the possibility of nadizhki avanbek and span, which mean inclined upper side sa.

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Claims (1)

DEVICE FOR MOUNTING THE SPAN STRUCTURE OF THE DIVIDING BRIDGE, including roll beams equipped with rollers, a portal frame, an outback and a counterweight, so that, in order to ensure the possibility of a non-flying structure and an outback, having inclined upper belts, the counterweight is equipped with a longitudinally movable platform mounted on the avant-garde or assembled part of the superstructure with grippers pivotally connected to the racks of the portal frame, and the racks of the portal frame olneny by (the length of the guide for capture and detachably fastened to the lower ends of beams nakatochnyh, wherein naka'tochnye beams disposed below the bottom 'avanbeka belt or assembled part of the superstructure .. / 10/1676