(57) Abstract:The invention relates to crossing-bridge means, and more specifically to a pontoon, pontoon bridges. Floating bridge includes stacked in the longitudinal direction of the river links that are pairwise connected by means of joint nodes that are located on the rotary fairings, engine parts, placed in pairs nasal pieces to each other between river sections, and coastal links. What's new is that motor units are interconnected in the nasal parts in the area of the bottoms located on the sides removable hard rods with eyes at the ends, with one end of each rod with a longitudinal slot in the ring is installed on the same engine link on the pin transverse to the shank, and the other motor level on the pin with a vertical opening in which is placed a sliding pin. The technical result of the invention is to increase the lifting capacity floating bridge is about two times by increasing its transverse strength. 6 Il. The invention relates to crossing-bridge means, and more specifically to the pontoon (floating) bridge.The famous floating bridge (see Pontoon pairs is in the longitudinal direction of the river links pairwise interconnected by means of joint nodes that are located on the rotary fairings, coastal units and tow-motor boats.A disadvantage of the known floating bridge is that hampered the operation of the tow-motor boats together with the axle at high speeds, currents and wind waves.Also known floating bridge (prototype, see the Pontoon Park PP-91// Technical description and operating instructions. 05341.360080.007. The first book, sheet 30, the second book, page 181. Fig. 183, JSC Vympel", Nizhny Novgorod, 1991), including stacked in the longitudinal direction of the river links that are pairwise connected by means of joint nodes that are located on the rotary fairings, engine parts, placed in pairs nasal pieces to each other between river sections, and coastal links.The disadvantage of this floating bridge is that pairs located in the motor it links, in contrast to river sections are not interconnected. As a consequence, along the floating bridge, you cannot skip heavy machinery because of its lack of transverse strength.The claimed invention is directed to solution of the problem p is e specified task is achieved by that floating bridge, including stacked in the longitudinal direction of the river links that are pairwise connected by means of joint nodes that are located on the rotary fairings, engine parts, placed in pairs nasal pieces to each other between river sections, and the coastal parts, motor parts are interconnected in the nasal parts in the area of the bottoms located on the sides removable hard rods with eyes at the ends, with one end of each rod with a longitudinal slot in the ring is installed on the same engine link on the pin transverse to the shank, and the other end of thrust with a round hole in the eyelet is installed on a different engine link on the pin with a vertical opening in which is placed a sliding pin.The use of the claimed technical solution will increase the load capacity of pontoon bridge about two times by increasing its transverse strength.The invention is illustrated by drawings, which depict: Fig.1 - floating bridge, side view; Fig.2 - the floating bridge plan; Fig.3 - section a-a in Fig.2; Fig.4 - section b-B in Fig.2; Fig.5 - section b-b of Fig.4; Fig.6 - section G-G in Fig.4.Floating m the IRNA United the two middle and two outer pontoons. In the deck of the pontoons built roadway. On the transom medium pontoons installed butt joint 7, is made in the form of plugs with pins and eyelets through which the river links are connected in the bridge in the longitudinal direction. In the transverse direction of the river, the links are interconnected in pairs with joint nodes 8, located on rotated to the lower position of the fairing 9. The fairing is fixed in the lower position of the rods 10. In the upper position of the fairings are only floating bridge, assembled from a single row of links. Engine parts 3, 4 are placed in the bridge pairs nasal pieces to each other and are interconnected in the nasal parts in the area of the bottoms located on the sides removable hard rods 11 with the eyelets on the ends. One end of each rod with a longitudinal slot in the ring is installed on the same engine link on the pin 12 with a transverse shaft 13, and the other end of each rod with a round hole in the eyelet is installed on a different engine link on the pin 14, provided with a vertical bore in which is placed a sliding pin 15 and a handle 16. To the eye with a round hole welded plate 17, to which is attached the guide bushing 18 and 19. The eye with the longitudinal soedinennyh with him two outer pontoons. In the middle pontoon is placed engine and propulsion and steering complex, made for example in the form of jet propulsion, and on the extreme sides of the pontoons installed butt sites, similar in design junction nodes on the transom river links. In the deck of the pontoons motor link embedded roadway. Each pair of motor units placed in the floating bridge across a certain number of twin river links. At the end of the floating bridge installed onshore links. Coastal link differs from river level wedge shape and the presence of joint nodes on only one river, the transom. By land, river, motor and coastal parts are transported on a car when folded.The proposed device operates as follows. River, motor and coastal links unloaded from cars to water. When this river and coastal links automatically open on the water, and the motor units open directly on the car before unloading. Next river links connect pairs to each other via a joint 8 nodes located on the swivel deflectors 9. Simultaneously connect pairs together in the nasal parts in the area of the bottoms located on bertaut along the sides of each hard thrust 11, holding it by the handle 16 and 20. Next, let transverse shaft 13 through the longitudinal slot in the eyes and set her on pin 12 (the position of the lugs shown in Fig. 5 in phantom lines). Then move the rod along the side of the adjacent side of the motor element to the stop pin 12 in the wall of the slot, put another ring on the pin 14 and lower retractable pin 15 from the extreme upper position (shown in Fig. 4 in phantom lines) down before entering it into the vertical hole of the pin 14. The pin 15 when lowering moves in guides 18 and 19. United pairwise river links join together in the longitudinal direction using a butt joint 7. After a certain number of twin river links placed one pair of motor units. At the ends of the gathered ribbon bridge set coastal links. The floating bridge is dismantled in the reverse order of Assembly. For this axle disconnect on the links, put them and upload to the car. Floating bridge, including stacked in the longitudinal direction of the river links that are pairwise connected by means of joint nodes that are located on the rotary fairings, engine parts, placed in pairs nya interconnected in the nasal parts in the area of the bottoms located on the sides removable hard rods with eyes at the ends, one end of each rod with a longitudinal slot in the ring is installed on the same engine link on the pin transverse to the shank, and the other motor level on the pin with a vertical opening in which is placed a sliding pin.
SUBSTANCE: invention can be used in designing ramp and propulsion and steering gear and their hydraulic systems. Novelty in proposed water craft is that it is furnished with streamlined carrying frame for fastening devices of propulsion and steering complex installed in hull aft part and formed by two pairs of rigid longitudinal beams hinge secured by inner ends of aft sheet of hull in zone located under loading side coupled by flexible cross beams in each pair and support bar between pairs. Hydraulic heads of propulsors are hinge-mounted on outer ends of each pair of longitudinal beams, being secured on said beams to form additional cross tie between beams. Carrying frame is furnished with power hydraulic cylinders connected with hydraulic system and installed to control position of heads and loading side by turning carrying frame in aft sheet hinge joints. Body of each is provided with upper roller support, being rolling support for each hinged loading side at its opening, and lower platform being rigid base interacting with ground at resting of hinged loading side on head body in loading position of loading side. Novelty in hydraulic system of watercraft is that it is furnished, in additional to propulsor control hydraulic cylinders, with hydraulic cylinders for setting ramps, changing thrust vector, fixing loading side and locking carrying frame. Each hydraulic cylinder, including propulsor position control hydraulic cylinders, are supplied through parallel hydraulic lines connected with main line, with electric control in each line. Invention contains description of design peculiarities of each line providing required modes of operation of watercraft.
EFFECT: improved performance of watercraft and creating of hydraulic system providing required mode of operation of watercraft.
9 cl, 11 dwg
FIELD: building, particularly to construct temporary roads across lakes and other water obstacles.
SUBSTANCE: ice bridge includes cooling plant, pipelines connected to cooling plant. Pipelines are submersed in water and suspended by wire ropes. Cooling plant has reducers for pressure reduction, 10 MPa gaseous nitrogen cylinders and liquid nitrogen cylinders adapted to fill pipelines with liquid and gaseous nitrogen mixture. The pipelines include several coiled sections or formed as straight and finned pipes. The pipelines are arranged in several rows and extend in vertical or horizontal directions. The pipelines are submersed for 0.1-5 m depth and are connected by wire ropes to balloons floating at water surface or to finned pipes driven in ground of river bottom and connected one to another by diaphragms. The cooling plant provides water freezing within 3-5 km range and obtains ice having thickness of 3 m or more.
EFFECT: increased water freezing rate.
FIELD: movable or portable bridges, floating bridges adapted to convey loads over ice cover.
SUBSTANCE: method to transport vehicle having weight exceeding load-carrying ability of ice cover over ice involves moving vehicle having weight not exceeding load-carrying ability of ice cover at resonance speed; moving vehicle having weight exceeding load-carrying capacity to ice cover line when above vehicle having lesser weight has moved away from ice cover line for distance equal to 2/3 of resonance bending-gravity wave length; initiating above vehicle having larger weight movement with above resonance speed. Resonance bending-gravity wave length is determined from where D is cylindrical stiffness of ice plate, ρ and h - ice density and thickness, g - gravity, H - water body depth.
EFFECT: increased load-bearing capacity of ice cover.
FIELD: floating bridges, for instance temporary bridges for load transportation over ice.
SUBSTANCE: structure includes ice blanket in which vertical holes are drilled for the full bridge structure length so that the holes are located from both bridge sides. Reinforced concrete blocks connected to ropes are inserted through the holes so that the blocks are located under the ice blanket. Discs having diameters exceeding hole diameters are connected to upper block ends. Rope lengths are selected to prevent ice blanket movement in upward direction with respect to initial ice position if flexural-gravity waves are generated in ice blanket.
EFFECT: increased load-bearing capacity.
FIELD: bridge crossing equipment; ferries and floating bridges.
SUBSTANCE: proposed motor unit includes displacement hull with joints in sides, engine mounted inside hull and water-jet propeller, two hinged pontoons which are articulated with hull and mechanism for opening and folding the pontoons. Each hinged pontoon is provided with torsion-loaded swivel hydrostatic shield on external side which is articulated with hinged pontoon in area of its bottom; hinged pontoons are also provided with mechanism for turning the shield; this mechanism is made in form of hydraulic cylinder with rod secured in hull of hinged pontoon. Thrust roller secured on end of rod is received by guide of hydrostatic shield.
EFFECT: reduced resistance of shuttle ferry due to improved streamlining of projecting lower part of motor unit.
FIELD: bridge construction, particularly floating bridges, for example, pontoon bridges.
SUBSTANCE: method involves unloading land-based and river-based pontoon sections on ice, expanding the pontoon sections in temporary bridge location area; sealing pontoons of each pontoon section by means of top and bottom jointing means; moving each pontoon section to temporary bridge construction site over ice; serially jointing pontoon sections with each other along temporary bridge length and breaking ice by blasting charges spaced from bridge axis. Longitudinal grooves are created in ice from each bridge side with the use of ice-cutters so that ice thickness in groove bottom area is not more than 10 cm. After that elongated charges including several detonating fuse strings are laid in the grooves. The grooves are filled with wet snow or water and elongated charges are blasted to break ice in each groove. After that ice under bridge sections is broken by vehicle movement over the bridge.
EFFECT: decreased time and increased safety of temporary bridge construction.
FIELD: construction industry; bridges.
SUBSTANCE: method of pontoon bridge equipping at high flow speed is performed using set of railway pontoon ribbon bridge and differs in the fat that bridge stiffness on water obstacle is provided by anchors which are installed on bridge top and bottom sides and are attached to bottom of outer pontoons with the help of ropes which pass through lugs fixed on rings welded to deck and bottom of outer pontoons.
EFFECT: increasing vertical component of hydrodynamic forces, reducing the different of member to top or bottom sides, and improving pontoon bridge reliability.
FIELD: construction industry.
SUBSTANCE: ice crossing construction method refers to ice-technology industry, and can be used when designing ice crossing meant for load transportation. Snow shall be removed from ice surface, and the latter shall be covered with air-tight film. Space between ice surface and film is ventilated with fan cold ambient air. Cold air flow intensifies heat exchange on ice surface and provides its fast cooling, and thickness increase.
EFFECT: fast putting into operation of ice crossing.
FIELD: construction, road construction.
SUBSTANCE: invention is related to the field of bridge engineering and is intended for erection of pontoon bridges over water obstacles on a tight schedule and with the least material and labour expenses. It is achieved by the fact that pontoon bridge comprises pontoons open at the bottom, on which bridge supports are mounted to carry spans and road way, and spacers that connect peripheral parts of pontoon to fixed anchors on soil, and every pontoon is arranged in the form of packet of vertically oriented adjacent tanks that are inverted upwards with their bottoms and are connected to system of air supply and its pressure control in every of them, at that spacers are located on the opposite sides of pontoon to form triangular figures with every of them, which are oriented in crossing planes, and have dampers and/or control mechanisms, preferably with remote control, their stretching in process of bridge erection and/or its operation. At that vertically oriented tanks form rows of cells in section with horizontal plane, which are evenly located on at least part of section area.
EFFECT: higher reliability of pontoon bridge operation at different dynamic effect at it, also from wave and wind loads due to provision of stability in pontoons that carry spans and provision of their controlled submersion at specified depth.
4 cl, 2 dwg
FIELD: transport, construction.
SUBSTANCE: method of producing ice ferry consists in cleaning ice surface of snow, placing a layer of heat-isolation material through the cut, along the ice ferry routed, and pressing aforesaid layer to the ice layer lower surface. A continuous layer of ice floats is placed between the ice surface lower surface and the said heat-isolation material.
EFFECT: higher load-carrying capacity of ice ferry.