Hatch cover capable of being quickly opened and closed

Abstract

The invention relates to an opening and closing device on a ship, in particular to a hatch cover capable of being quickly opened and closed. The hatch cover includes a hatch fence, and a cover plate is arranged on the hatch fence and hinged to and matched with one side of the hatch fence. A central hole is formed in the cover plate, a sealing device is arranged in the central hole, and a locking device is arranged on the inner side of the cover plate. The hatch cover is characterized in that the locking device includes a planet carrier. An inner gear ring, planet gears and a sun gear which arerotatable and are meshed with one another are arranged in the planet carrier. Locking rods are arranged on one side of the planet carrier, one ends of the locking rods are hinged to the inner gear ring, and the other ends of the locking rods are connected with the cover plate through a guiding mechanism. Locking openings are formed in the inner side of the hatch fence. The locking device is provided with a central shaft passing through the sun gear, the central shaft and the sun gear are fixedly connected, both ends of the central shaft protrude out of the planet carrier, a polygonal blind hole is formed in the end surface, opposite to the cover plate, of the central shaft, and a main hand wheel is fixed to the other end of the central shaft. According to the hatch cover, unlocking operation is simple, required driving force is small, and operating requirements under emergency work conditions can be met.

Description

technical field [0001] The invention relates to an opening and closing device on a ship, in particular to a fast opening and closing hatch cover. Background technique [0002] As we all know, hatch covers are common opening and closing devices used on ships. When the hatch cover is opened, it can be used for the passage of people or goods, and when it is closed, it can be used to seal and isolate the local area on the ship, which can ensure that the people or goods in the cabin are not protected from external adverse environmental factors such as waves, The influence of wind, rain, salt, etc. [0003] Chinese invention patent ZL201410083776.4 discloses a locking device for a hatch cover of a deep-sea manned submersible, which includes a rotating shaft that runs through the cover plate, and main hand wheels are fixed at both ends of the rotating shaft; there are transmission threads on the rotating shaft There is a traction nut on the transmission threaded section, and the ...

AI Technical Summary

Problems solved by technology

At the same time, the transmission efficiency of the screw rod is low, and a large driving force is required for each operation

All these factors lead to the inability to open the hatch cover quickly and fail to meet the operating requirements under emergency conditions.

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