RU2587379C1 - Mobile sliding bridge - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to bridge building and can be used for fast arrangement of bridge crossings. In a mobile extensible bridge consisting minimum of two interconnected sections, each of which contains at least two located in parallel planes lateral frame elements in the form of two beams of equal length, pivotally connected to each other in their geometrical centres by “scissors” type, i.e. with a possibility to turn around the axis perpendicular to the common plane formed by them, the upper and lower ends of beams of one side frame element are connected in pairs with top and bottom ends of the other side frame element by means of rigid links; the sections are connected to each other by hinges in the respective ends of side frame elements, while to rigid links, connecting opposite lower ends of beams of two adjacent frame elements, there is attached, providing for a possibility to turn around them, a bridge floor consisting of two parts pivotally connected between themselves along the axis perpendicular to the direction of movement across the bridge. Upper and lower ends of beams in the side frame element can be additionally pivotally connected in pairs by braces, each of which consists of two equal in length parts, pivotally connected with a possibility of fixation in various positions.

EFFECT: invention provides for compactness of the bridge structure in folded state, thereby allowing its mobile delivery to the required place, as well as simplicity and speed of its installation in the place of the crossing arrangement.

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Description

The invention relates to the field of bridge building and can be used for the quick device of bridge crossings (automobile, pedestrian) through various obstacles, including those that suddenly arise.

Various types of bridge structures are known (see, for example, https://ru.wikipedia.org/wiki/Category: Bridge_types), for which the common sign is that they are built permanently in certain places, and therefore cannot be quickly dismantled, moved to another place and re-installed in it.

There are various collapsible bridge structures (see, for example, patents of the Russian Federation No.№: 77875, IPC E01D15 / 12, publ. 10.11.2008; 134944, IPC E01D15 / 20, publ. 11/27/2013; 137558, IPC E01D15 / 133 , publ. 02/20/2014; 2509186, IPC E01D15 / 127, publ. 03/10/2014), with which it is possible to conditionally-mobile organization of crossings through various obstacles in arbitrary places. However, the construction of bridge crossings using such structures has several disadvantages, namely:

- the construction of a bridge from individual parts takes a significant period of time;

- requires certain machinery and equipment necessary for delivery and installation;

- has restrictions on the geography of application (the ability to deliver to a given place).

The closest in design to the claimed technical solution is the "Folding bridge for emergencies" (see http://my.mail.ru/mail/1lus/photo/1016/1032.html), containing expandable scissor side supports connected between a system of cable extensions and a folding, sectional bridge canvas fixed to the side supports in the places of axial rotation of their elements.

This design of the bridge is compact in the transport state and allows you to install it in almost any desired place without the use of sophisticated equipment for a short time period (the ability to install is limited, in fact, only by the size of the bridge). However, the bearing load that such a bridge is able to withstand is very limited, which makes it impossible to use it to move anything or anyone, except pedestrians (for example, vehicles).

The task to which the claimed technical solution is directed is the ability to quickly organize or restore transport and / or pedestrian connections in various places (for example, if existing communications are damaged as a result of an emergency).

The technical results achieved using the proposed solution is the compactness of the bridge structure in the folded ("marching") state, which ensures its mobile delivery in a truck to the installation site, quick installation ("deployment") in a given place without the use of assembly operations and high bearing capacity, allowing to provide car traffic.

Technical results are achieved in that in a mobile sliding bridge, consisting of at least two sections connected to each other, each of which contains at least two side frame elements located in parallel planes in the form of two beams of the same length, articulated to each other in their geometric centers of the type of "scissors", that is, with the possibility of rotation around an axis perpendicular to the common plane formed by them, the upper and lower ends of the beams of one side frame element in pairs with the upper and lower ends of the other side frame element by means of rigid connections, the sections are pivotally connected to each other at the respective ends of the side frame elements, and a bridge web is attached with a possibility of rotation around them to rigid bonds connecting the opposite lower ends of the beams of two adjacent frame elements, consisting of two parts, pivotally connected to each other along an axis perpendicular to the direction of movement through the bridge.

At the same time, the upper and lower ends of the beams in the side frame element can be additionally pivotally connected to each other using spacers, each of which consists of two parts of equal length, pivotally connected with the possibility of fixing in different positions.

The essence of the proposed technical solution is illustrated by drawings, where in FIG. 1 shows a basic embodiment of a two-section mobile sliding bridge in working condition, FIG. 2 - mechanism of its folding / unfolding, side view.

Mobile sliding bridge contains side frame elements 1 with hinged nodes 2 connections at the ends, upper and lower rigid links 3 and 4, respectively, articulated parts 5 and 6 of the bridge web.

The device of the bridge crossing using the proposed technical solution is as follows.

When delivered to the desired location (for example, by road), the mobile sliding bridge is folded. Each of its sections is “compressed”, that is:

- the beams of each of their side frame elements 1 are rotated relative to each other until they are in contact (compressed almost to form a common plane);

- parts 5 and 6 of the bridge web, each of which with one end side, is connected (with the possibility of rotation around it) to the corresponding lower rigid connection 4, pivotally connected to each other by the opposite end sides, compressed to touch their surfaces so that the rotary axis is located inside the area bounded by the side frame elements 1 and the upper and lower rigid ties 3 and 4, and fixed in this position;

- if they exist, parts of each of the upper and lower struts are compressed to contact with each other so that their hinges are located inside the area bounded by the side frame elements 1 and the upper and lower rigid ties 3 and 4, and are fixed in this position.

As a result, when folded, the inventive bridge has very compact dimensions: the length is equal to the length of the rigid ties 3, 4 (the width of the bridge in working condition); width - the length of the beams of the side frame elements 1; height - the total thickness of the beams of the side frame elements 1 on one side of the bridge.

Directly installing the bridge is as follows.

Having previously fixed one end of the bridge structure on one side of the crossing, it is pushed through an obstacle to the other side of the crossing, where the other end is fixed. In this case, the beams of each of the side frame elements 1 are rotated relative to each other until a predetermined angle is formed between them (possibly up to 120 °), and parts 5 and 6 of the bridge web are moved apart relative to each other (turning relative to the common axis) until a common plane is formed. Rigid connections 3 and 4 fixed in nodes 2 provide lateral stability of the whole structure.

In cases where the mobile sliding bridge additionally contains upper and lower struts, parts of the latter are also expanded until a straight line is formed and are fixed in this position by locking devices, thereby providing additional longitudinal rigidity of the bridge.

Claims (2)

1. A mobile sliding bridge consisting of at least two interconnected sections, each of which contains at least two lateral frame elements located in parallel planes in the form of two beams of the same length, articulated to each other in their geometric centers as “scissors” ", That is, with the possibility of rotation around an axis perpendicular to the common plane formed by them, characterized in that the upper and lower ends of the beams of one side frame element are paired with upper and lower the ends of the other side frame element by means of rigid connections, the sections are pivotally connected to each other at the respective ends of the side frame elements, and to the rigid connections connecting the opposite lower ends of the beams of two adjacent frame elements, a two-piece bridge web is attached to rotate around them, pivotally connected to each other along an axis perpendicular to the direction of movement through the bridge. 2. A mobile sliding bridge according to claim 1, characterized in that the upper and lower ends of the beams in the side frame element are additionally pivotally connected to each other by means of spacers, each of which consists of two equal parts along the length, pivotally connected with the possibility of fixing in different positions.

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