DE119507C

DE119507C -

Info

Publication number: DE119507C
Application number: DE1899119507D
Authority: DE
Filing date: 1899-03-24
Anticipated expiration: 1919-03-25

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Gegenstand vorliegender Erfindung ist eine fliegende Klappbrücke, deren Trägerfüllung aus sich kreuzenden, derart in den Kreuzungspunkten gelenkig verbolzten Stäben besteht, dafs letztere zum Zwecke des Entfaltens nach Art der sogenannten Nürnberger Scheere gegen einander drehbar sind.The subject of the present invention is a flying bascule bridge, its carrier filling consists of intersecting rods articulated in such a way at the intersection points, the latter for the purpose of unfolding in the manner of the so-called Nuremberg scissors are rotatable with each other.

Die bisher bekannten Brücken dieses Systems (vergl. z. B. die Patentschrift 57387) weisen zumeist den Uebelstand auf, dafs bei ihnen die obere Gurtung oder die diese ersetzenden Verticalstäbe fehlen, mithin die sich kreuzenden Stäbe auf Biegung beansprucht werden und sich bei verhältnifsmäfsig schwacher Belastung krümmen. Ferner übt bei der Entfaltung-von einem Stützpunkte aus das im Schwerpunkte angreifende Eigengewicht der Brücke ein solches Biegungsmoment aus, dafs die Stäbe, insbesondere die dem Stützpunkte näher gelegenen, sehr stark beansprucht werden und infolge dessen ungewöhnlich stark bemessen sein müssen. Da aus vorstehenden Gründen derartige Brücken ein grofses Gewicht besitzen, so ist ein schnelles Hantiren mit denselben, wie es beispielsweise bei einer Verwendung im Kriege erforderlich ist, in vielen Fällen ausgeschlossen. The bridges of this system known up to now (see, for example, patent specification 57387) mostly show the inconvenience that they lack the upper chord or the vertical bars that replace them, and consequently those that cross each other Rods are subjected to bending stress and are subject to relatively weak loads bend. Furthermore, when developing from a base, the focus is exercised acting dead weight of the bridge such a bending moment that the rods, in particular those closer to the base are very heavily used and are therefore unusually large must be. Since, for the above reasons, such bridges are very heavy, such is the quick handling of the same, as is the case, for example, when used in the Wars required is ruled out in many cases.

Vorliegende Erfindung vermeidet diese Uebelstände, und zwar in erster Linie durch die Anordnung einer oberen Gurtung, wodurch die Wirkungen der äufseren Kräfte zum gröfsten Theil in die Stabaxen fallen. Ferner wird durch eine zwangläufige Gleitführung auf an den Enden der Träger befindlichen Verticalen, sowie durch' Kupplung der oberen Gurtung mit der unteren der für das Entfalten bezw. Zusammenbringen der Brücke erforderliche innere Zusammenhang derart gesichert, dafs die schrägen Füllungsstäbe entlastet werden, also schwächer ausgeführt sein können.The present invention avoids these inconveniences, primarily through the arrangement an upper chord, whereby the effects of the external forces fall for the most part in the stabaxes. Furthermore, by an inevitable sliding guide on verticals located at the ends of the girders, as well as by 'coupling the upper strap with the lower one for unfolding or. Bringing the bridge together secured in such a way that the inclined filling bars are relieved, so can be made weaker.

Die Brücke besteht aus zwei ebenen, beiderseitig den Fahrbahn angeordneten fachwerkartigen Trägern, deren Seitenansicht im entfalteten Zustande nebst dem dazu gehörigen Transportwagen Fig. 1 zeigt. Fig. 2 ist eine Ansicht von vorn, Fig. 3 ein Grundrifs, in dem aufser den beiderseitigen Füllungsstäben in der oberhalb der Mittellinie gelegenen Hälfte die Anordnung der oberen Gurtungsstäbe, unterhalb derselben die Anordnung der unteren gleichzeitig als Fahrbahn dienenden Gurtung dargestellt ist. Fig. 4 zeigt die Brücke in einem theilweise entfalteten Zustande, Fig. 5 eine Einzelheit.The bridge consists of two level trusses arranged on both sides of the roadway Carriers, the side view of which in the unfolded state together with the associated transport trolley Fig. 1 shows. Fig. 2 is a View from the front, Fig. 3 is a Grundrifs, in which aufser the filling bars on both sides in the half above the center line the arrangement of the upper chord bars, underneath the same the arrangement of the lower one serving as a roadway at the same time Belting is shown. Fig. 4 shows the bridge in a partially unfolded state, Fig. 5 a detail.

Die Stäbe α α sind an den Kreuzungspunkten b b gelenkig durch Bolzen mit einander verbunden, während ihre oberen und unteren Enden in den Gelenkpunkten ede und f derartig an einander angelenkt sind, dafs sie fortlaufend eine sogenannte Nürnberger Scheere bilden. Die oberen freien Scheerenenden eines jeden Trägers sind an Querstangen g angelenkt, die ihrerseits an beiden Enden durch Rollen h auf verticalen Ständern jThe rods α α are articulated to one another at the intersection points bb , while their upper and lower ends are articulated to one another at the articulation points ede and f in such a way that they continuously form what is known as Nuremberg scissors. The upper free ends of the scissors of each beam are hinged to crossbars g , which in turn are supported at both ends by rollers h on vertical stands j

Claims

Are performed (see Fig. ι to 4). The uprights i are connected in pairs at both ends of the bridge above by rods k. At the lower ends of the stand i are linked by means of cross rods / the lower free scissor ends and the rods m m of the lower chord (see Fig. 2). The lower chord consists of the rods mm and η η (Fig. 1, 3 and 4), which accommodate the covering 0 made of wood, corrugated iron, wire mesh or the like. (Fig. 3). The ends of the rods η that are located towards the center are articulated to the rods α at the nodes / by means of transverse rods. The other ends of η are articulated to the rods m at the points ρ, the latter being provided with U-shaped brackets q which hook into the connecting crossbars at the articulation points e. ; The arrangement of the brackets q on the bars m can be seen from FIG. The upper belt consists of the rods rr articulated to one another in s (Fig. 1, 3 and 4), which are rotatable in their middle around the upper hinge points c. One of the ■ rods r has a U-shaped bracket at s in the same way as m m, which prevents longitudinal displacement by engaging a transverse rod at d. Since the point s must have the same distance from the point ρ in each of the girders in every state of unfolding, the inevitability of the movement of the points s and ρ ρ is supported by connecting rods t for the purpose of cooperation between the upper and lower chords (Fig . 4). Furthermore, since each outward end of the rods r with the associated upper and lower scissor end must always lie in a "straight line", this inevitable mutual movement of these three points is supported by the rollers h guided on the stand i Guides are connected in pairs by crossbars u (Fig. 2). The bridge hangs with its lower crossbar / at the rear end of the trolley in articulated pieces ν (Fig. 1). During transport, the bridge is folded up and forward onto the frame of the trolley If it is to be unfolded, it is first brought into the upright position. In this position it is held on the drawbar of the wagon or another suitable point by a rope or chain w attached to k happens by turning the crank x, which by means of gears sitting on the same axis, the racks jr, which attack at point e d, remove it from the carriage, push it forward. This is where the Nuremberg scissors work and unfold the bridge, whereupon the clamps q snap into the associated crossbars. The roller guides h on each stand i approach each other until they touch. The bridge can easily be unhooked from the joint pieces ν and is designed in the same way on both ends, so that it unfolds or unfolds from each of the two ends. can be brought together. Instead of four fields, as arranged here, the bridge can also be designed with six, eight or more fields in a suitable manner. Patent claims:

1. Flying bascule bridge, the inclined filling bars (a) are articulated in the manner of the Nuremberg scissors, characterized by the arrangement of an upper girdle consisting of bars (r) hinged to one another at the ends (s) , whose girders are attached to the upper scissor hinge points. (c) rotatable rods (r) form continuous nodes with these, in such a way that they engage by means of brackets (q) in crossbars which connect the two bridge girders at the nodes (d) .

2. An embodiment of the flying bascule bridge according to claim 1, characterized by the arrangement of vertical, at both ends of the bridge arranged pairs of guide rods' (i) , on which the paired upper ends of the outermost shear bars (a) and the girder bars (rj in the Unfolding and when folding the bridge with guide rollers (hj. Slide .

3. An embodiment of the flying bascule bridge according to claim 1, characterized in that the pivot points which can be swung out upwards (pj of the lower chord by connecting rods (t) with the pivot points (s) which perform the same movement during the unfolding or when the bridge is collapsed the upper strap are coupled:

1 sheet of drawings.