Combined bridge structure convenient for passing of oil tanker in offshore area

Abstract

The invention belongs to the technical field of bridges, particularly relates to a combined bridge structure convenient for passing of an oil tanker in an offshore area, and provides the following scheme aiming at the problems that the lower oil tanker can pass only when the bridge surface of the existing lifting bridge is lifted to a very high position, the higher the lifting height is, the moreenergy is consumed, the more dangerous the lifting height is, and the falling risk exists at any time. The combined bridge structure comprises a bridge pier body and a bridge tower located in the middle of a river, the upper surface of the bridge pier body is of an H-shaped structure, and supporting frames are fixed to the upper surface of the bridge pier body. When the structure needs to pass through a cruise ship with a high ship body during use, only the T-shaped protruding block at the end of the middle bridge needs to be jacked upwards into the arc-shaped rail, then the steel wire rope and the main pull rope are pulled at the same time to pull the T-shaped protruding block to the middle of the arc-shaped rail as much as possible, and then the driving end of a gear seat is started; a middle axle can be slowly dragged to one side in a translation mode by driving the transmission screw to rotate, and at the moment, the oil tanker can pass through conveniently.

Description

technical field [0001] The invention relates to the technical field of bridges, in particular to a composite bridge structure convenient for the passage of oil tankers in the near seaport area. Background technique [0002] The existing lifting bridge is to make the bridge span of the navigable part in the middle of the bridge into a structure that can be lifted. There is a tower and a suspended balance weight at both ends of the movable bridge span. Pulleys and counterweights are connected. When the ship is going to pass, the bridge span is raised to temporarily interrupt the traffic on the bridge. After the ship passes, it is lowered back to the original position to resume land traffic. This type of lifting bridge is suitable for bridges with large spans. [0003] After retrieval, the Chinese patent number is CN201410818562.7, which discloses a kind of lifting bridge, which includes a bridge body horizontally arranged above the river channel, two supporting towers are res...

AI Technical Summary

Problems solved by technology

[0003] After retrieval, the Chinese patent number is CN201410818562.7, which discloses a kind of lifting bridge, which includes a bridge body horizontally arranged above the river channel, two supporting towers are respectively arranged on both sides of the river channel, and lifting arms are respectively provided at the four corners of the bridge body to lift There is a movable pulley block on the upper side of the arm, and a fixed pulley block on the upper part of the supporting tower. A crossbeam is fixed between the supporting towers on the same side of the river bank. A driving device is installed on the crossbeam. The driving device includes a rotatable rope drum. The fixed pulley block and the movable pulley block are wound on the rope drum; the lifting arm is also equipped with an anchor, which is connected to one end of the balance cable, and the upper part of the supporting tower is also equipped with a reversing guide wheel, and the balance cable bypasses the reversing pulley. The other end of the balance cable is connected with a balance block; however, this type of lifting bridge has two disadvantages. One is that the bridge deck needs to be raised to a very high position to ensure that the oil tankers below pass through. The higher the rise, the more energy is consumed. And the more dangerous it is, there is a danger of falling at any time. Secondly, it is necessary to build a bridge tower with a matching height, which is time-consuming and labor-intensive when it costs a lot of money.

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