BRIDGE BLOCK OF SPAN Russian patent published in 2020 - IPC E01D15/12 

FIELD: construction.

SUBSTANCE: invention relates to the field of crossing-and-bridge devices, and more specifically to span structures of dismountable bridges. Bridge block is made in form of two track sections of rectangular cross-section, pivotally connected to each other by means of an inter-track flat shield and equipped in the lower belt with attachment units of adjacent bridge blocks, as well as rope device for cross-section opening of track sections. Inter-beam shield is equipped with device for movement of bridge unit along guide beam, which is made in form of arranged from below inter-track shield rotating shaft on supports with installed on shaft ends elongated support rollers with flanges, and the length of each support roller with a flange is in range from 0.3 to 0.4 of the width of the head beam. Shafts with elongated support rollers with flanges are installed at the bottom of the inter-track shield in the following order - one along the middle of the length of the inter-track shield, and two other edges of this shield at equal distances from shaft with elongated support rollers, installed in middle of inter-track shield. On the inner side of each track section of the bridge unit behind extreme shafts with elongated support rollers there are pivotally mounted on one power diagonal linkage, which is also a guide when mounting the bridge unit on the anvil beam, on the other end of which is hingedly fixed slider, wherein slide is installed in movable manner in guide, rigidly attached to the bottom of inter-backshield, wherein slider and guide wall have holes that match after transfer of bridge unit from transport position to working one and are locked by locking pin.

EFFECT: technical result is reduction of time of installation of bridge unit on anvil beam, its connection with previous unit and movement to next position of process of span assembly, higher reliability of fixation of bridge unit in opened position.

1 cl, 5 dwg