FR2711999A1 - Removable bridge for civil or military needs. - Google Patents

Abstract

Removable bridge for civil and military applications. The bridge is formed by an even number of identical basic elements (1) namely two, four, six ... basic elements (1). Each base element (1) comprises at one end, juxtaposed protruding parts (5, 5 '), offset in height, and a ramp (9) at the other end. Each protruding part (5, 5 ') has at least one horizontal bore (8) for receiving connecting elements and each ramp (9) has at least one vertical bore (10) for receiving connecting elements. Each base element (1) can have, depending on the assembly, several running surfaces (6, 6 ', 7, 7', 9).

Description

I "Removable bridge for civil or military needs"

  The present invention relates to a dismantled bridge

  wheat intended for civil and military applications, including

  laid at least two sections of the same shape, connected by connecting elements. According to document DE-41 26 250 A1, there is known a bridge system composed of several sections of the same shape constituting track supports; in this system,

  one or more sections are combined to form a bridge.

  The ends of the track supports have fixed comb-split ramps. After their assembly, the track supports can receive in combination with the tensioning elements deployed, the compression forces and the

  bending torques exerted during the passage of vehicles.

  After having engaged one in the other two elements

  track support elements, tooth-shaped projections,

  juxtaposed with the ramp of one of the track supports,

  enter each other's opposite teeth

  track support. The supports of the bridge sections are re-

  link by telescopic transverse tubes.

  Such comb-like protrusions in the entrance area of a bridge system constitute a danger zone for certain vehicles with narrow tires as well as for pedestrians, when it is dark. Another

  disadvantage is that a bridge element is made up of more

  together and requires special tools to

  the assembly or disassembly of the bridge.

  Document DE-19 27 273 provides elements

  link to raise two ramps mounted in a low-

  culante on floats, using U-shaped stirrups and locking means to rigidly connect the two superimposed ramps. According to this document, each ramp comprises, at its lower face, a U-shaped stirrup to engage the tip of the ramp which is each time below and at least one locking installation which engages from above, away from the U-shaped stirrup, between it and the tip of the ramp. The present invention aims to create a

  removable bridge for civil and military applications

  shutters, and allowing: - to use a basic element in a single piece, - to carry out a simple mode of connection of the basic elements, - to ensure an unlimited possibility of use for

all vehicles and pedestrians.

  To this end, the invention relates to a demon bridge

  table corresponding to the type defined above, characterized in that the bridge consists of an integer number of elements

  of the same shape, each basic element having an ex-

  ramp-shaped end provided with at least one green bore

  tical to receive connecting elements used to

  connect the ramps of two basic elements and each element

  basic element comprises at the other end, juxtaposed projecting parts, offset in height, each projecting part having at least one horizontal hole for receiving connecting elements serving to connect the projecting parts of two basic elements and each basic element

  has several running surfaces.

  The removable bridge according to the invention is characterized

  térise in that for a rapid assembly of a bridge made up of at least two sections one uses only elements of

  base of the same shape which serve, depending on their location

  mounting cement, either of end segments or of

interior segments.

  The removable bridge according to the invention consists of

  of an even number of basic elements for example two, four

be, six or more.

  The basic element which can be used by being turned 180 each time has: - a rectangular section,

  - a ramp-shaped end provided with per-

  vertical slots for the connecting elements, - a rolling surface at its upper face and at its lower face, - with an inner cavity face having at least two projecting parts, juxtaposed, offset in

  height and with horizontal holes for receiving

see the connecting elements.

  A bridge formed of basic elements according to the invention can if necessary also be used in a form such that the end segments comprise basic elements whose ramp surface is turned towards

the bottom.

  The present invention will be described below in

  using schematic representation examples

  ment in the accompanying drawings in which: - Figure 1 is a side view of a bridge formed of four basic elements, - Figure 2 is a perspective view of a basic element for which the ramp is facing the top. - Figure 3 is a perspective view of a

  basic element with a ramp facing downwards.

  FIG. 1 shows a bridge made up of four basic elements 1, namely two end elements 2 and two interior elements 3. The interior element 3, left,

  is rotated 180 in its longitudinal direction and re-

  poses by its ramp 9 on the ramp 9 of the right interior element 3. The end elements 2 are removably connected to the interior elements 3, at the projecting parts 5, 5 ′ by connecting elements 8 ′ housed in the horizontal holes 8. The two ramps 9 of the interior elements 3 are connected by connecting elements 10 '

  crossing vertical holes 10.

  The basic element 1 shown in perspective in Figure 2 has on its faces 4 to be connected, projecting parts 5, 5 'juxtaposed but offset in height. The outer surface 6 of the projecting part 5 is flat like the rolling surface 7; the outer surface 6 'of the projecting part 5' is flat like the rolling surface 7 'Opposite the front face 4, the basic element 1 comprises a ramp 9 provided with vertical holes 10

  to receive connecting elements.

  Figure 3 is a perspective view of the base member rotated in this case 180 relative to that of Figure 2; in this position this element is used for example as an interior left element 3 in

the case of the bridge of figure 1.

LIST OF REFERENCES

  1 base element 2 end element 3 interior element 4 front wall of the base element 1, 5 'projecting parts 6, 6' exterior surfaces 7, 7 'running surfaces 8 horizontal bores in the projecting parts, 5 '8' connecting element for horizontal drilling 9 ramp 10 vertical drilling in the ramp 9 'connecting element for vertical drilling 10

Claims (3)

R E V E N D I C A T I O N S   1) Demountable bridge intended for civil and military applications, composed of at least two sections of the same shape, connected by connecting elements, characterized in that: the bridge consists of an integer number of basic elements   (1) of the same shape, each basic element (1) having an ex-   ramp-shaped end (9) provided with at least one vertical hole (10) to receive connecting elements (10 ') used to connect the ramps (9) of two basic elements   (1) and each basic element (1) comprises at the other end   mite, juxtaposed projecting parts (5, 5 '), offset in height, each projecting part (5, 5') having at least one horizontal bore (8) to receive connecting elements (8 ') used to connect the projecting parts (5, ') of two base elements (1) and each base element (1) has several rolling surfaces (6, 6', 7, 7 ', 9). 2) Removable bridge according to claim 1, characterized in that   in the case of a bridge formed by two sections, the extremities   tees of the basic elements (1) comprising the projecting parts (5, 5 ') are associated by connecting elements (8'). 3) removable bridge according to claim 1 characterized in that in the case of a bridge formed of an even number of four and more sections, there are each time alternately two basic elements (1) connected by the parts projecting (5, 5 ') and two basic elements (1) connected by the ramps (9),   with connecting elements (8 ', 10').