Locking device for deep-sea manned submersible hatch cover

Abstract

The invention provides a locking device for a deep-sea manned submersible hatch cover. The locking device comprises a rotary shaft penetrating through the hatch cover. A sealing mechanism is arranged among the hatch cover, a shaft sleeve on the hatch cover and the rotary shaft. The two ends of the rotary shaft are provided with an external rotation hand wheel and an internal rotation hand wheel respectively. The rotary shaft is provided with a transmission threaded section, a traction nut is installed on the transmission threaded section, and two to four connecting rod mechanisms are distributed on the traction nut in the equal included angle mode. Each connecting rod mechanism comprises a short traction rod, a long traction rod, a locking rod and a supporting rod, wherein one end of each short traction rod is hinged to the traction nut, one end of each long traction rod is hinged to the shaft sleeve on the hatch cover, the other end of each short traction rod and the other end of the corresponding long traction rod are hinged to the rear end of the corresponding locking rod, the front middle portion of each locking rod is hinged to one end of the corresponding supporting rod, the other end of each supporting rod is hinged to the hatch cover, and the front end of each locking rod is a locking end. According to the locking device, a pressure-resistant shell structure is not damaged, even and reliable pressing force can be provided, and the locking device is used for locking the deep-sea manned submersible hatch cover.

Description

technical field [0001] The invention relates to a locking mechanism for an access hatch cover, in particular to a locking mechanism for a hatch cover of a deep-sea manned submersible. Background technique [0002] The manned cabin of a deep-sea manned submersible is generally spherical. The driver of the submersible enters the manned cabin through the hatch cover, and then locks the hatch cover with the help of a hatch cover locking mechanism to prevent seawater from entering. The hatch cover locking mechanism needs to have high reliability, and at the same time, it should be easy to operate and convenient for the submersible driver to manually lock. The locking mechanism should also allow unlocking from the outside, so that the driver can perform rescue work when he cannot unlock from the inside. The locking mechanism must have good watertightness in deep water, and no leakage is allowed to affect the normal operation of the submersible and endanger the safety of the subme...

AI Technical Summary

Problems solved by technology

The locking mechanism must have good watertightness in deep water, and no leakage is allowed to affect the normal operation of the submersible and endanger the safety of the submersible

[0003] There are two main types of existing submersible hatch cover locking mechanisms. One is a pressure cooker structure, which drives a locking swivel with multiple protruding teeth to rotate at a small angle to complete the locking. However, this structure requires On the pressure shell of the submersible, there are grooves that match the convex teeth, which will damage the overall strength of the pressure shell to a certain extent, and are not suitable for deep-sea submersible structures; the other is a multi-point locking structure, but the operation is more cumbersome , and it is difficult to ensure that the locking force is balanced during the locking process, and it is impossible to ensure that the hatch cover of the submersible and the pressure shell are tightly and evenly pressed

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