Link pontoon-bridge park

 

(57) Abstract:

The invention relates to a bridge-building technique and can be used when aiming for the floating bridges on water obstacles with a very rapid current, and with the passage of the waves break. The invention consists in that link pontoon-bridge Park, containing four folding pontoon, under the extreme bottom of the pontoon mounted horizontally hydrodynamic device in the form of a rigid screen, divided into separate sections along the length of the element, and the width is made greater than the width at the pontoon, at the same time to ensure the sustainability of the rigid screen is equipped with longitudinal and vertical rods that attach to the extreme pontoon. 3 Il.

The invention relates to a bridge-building technique and can be used for remelting equipment, in particular when aiming for the floating bridges on water obstacles with a very rapid current, and with the passage of the waves break, resulting in the destruction of the buildings waterworks, as well as during flooding.

Equipment and maintenance of river crossings at high velocity, using existing crossing means is difficult, and in many the e activities which often give temporary effect.

You know the link pontoon-bridge Park, which includes four folding pontoon [1]

The closest in technical essence and the achieved result to the invention is link monotonically-bridge Park, consisting of four collapsible pontoons, including average and extreme pontoons with contours, bottom, roadway and hydrodynamic device [2]

The disadvantage of this link is that it is unstable operates at high speed currents in excess of 3 m/s, when there is a significant trim level, caused by reduction of pressure under the bottom of the link due to the increase flow rate. Applied at the level of the hydrodynamic device is partially aligns the flow of water, flowing lines and the bottom of the link, and to some extent protects light deck at the pontoon from the overflow of water, but does not eliminate the cause, calling the trim level, which leads to buckling of the link and excludes the use of floating bridges, resulting in a delay of troops when fording. In addition, when the change in velocity required to adjust the tilt angle of the hydrodynamic rorive, when there are fluctuations in the flow rate over time.

Object of the invention is the improvement of the link pontoon-bridge Park, providing on-the-water obstacles at high flow rate.

The problem is solved by increasing the hydrodynamic resistance level due to equipment hydrodynamic device in the form of a rigid screen to the bottom side on the bottom link under the extreme perimeter of the pontoon.

In Fig. 1 shows a General view of the link of the pontoon-bridge Park in the working position with the hydrodynamic device in the form of a rigid screen of Fig.2 link from the bottom of Fig. 3 fastening elements on screen at the pontoon.

Link pontoon-bridge Park contains four folding pontoon two medium 1 and two at 2 pontoon with lines 3, bottom 4 and the roadway 5. Under the bottom 4 and the rim 3 at the pontoon 2 from the lower side of the link is established hydrodynamic device in the form of a rigid screen 6, which is made equal to the length of the link, and width greater than the width at the pontoon 2. To ensure the sustainability of the hard screen is made with 7 longitudinal and vertical rods 8, is it, and the vertical rods 8 with the fingers 10 is attached to the extreme perimeter of the pontoon. Moreover, for reducing the complexity of installation screen 6 is made of separate longitudinal sections 11.

Works link as follows.

Before tip-off of the bridge on the water hazard with a high rate of flow or in the period of breaking waves on the link set screen 6. After resetting link with the transport vehicle and the axis of the bridge it goes into operating position. In the operation of the bridge on the water hazard with a high velocity flow over the link of the thread being reflected from the screen, not around the extreme perimeter of the pontoon, and moves without separation of the particles to the bottom edge of the screen, which ensures uniform flow velocity in the border layer on the bottom level and eliminates the pressure drop in the lines at the pontoon, resulting in reduced krenawi time, leading to a trim level that provides a stable work in the stream.

The device is a hard screen on the extreme pontoon increases the stability of the link in the thread, as it allows to reduce the pitch by increasing the flow rate. This provides the opportunity to use the link pontoon-bridge p Link pontoon-bridge Park, includes two medium and two extreme pontoon with lines, roadway and hydrodynamic device, characterized in that the hydrodynamic device is made in the form of a rigid screen, placed under the bottom and rim of extreme pontoon from the lower side of the link, the screen is provided with a longitudinal rods attached by rigid locking devices to the extreme bottom of the pontoon, and vertical rods, by means of which the screen is fixed on the extreme perimeter of the pontoon with the fingers, and the screen is made of separate longitudinal sections.

 

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