Marine impact cut-off safety coupling

Abstract

The invention discloses a marine impact cutoff safety coupling which comprises a host end connection flange (6) and a shafting end connection flange (4). The marine impact cutoff safety coupling is characterized by further comprising a piston intermediate (5) which is engaged with the host end connection flange (6) and can be axially and slidingly matched in the shafting end connection flange (4), wherein an oil chamber (8) is arranged in the shafting end connection flange (4) or the host end connection flange (6); a piston (5.2) is arranged in the oil chamber (8), and connected with the piston intermediate (5); an oil inlet (14) and an oil discharge port (7) which is opened and closed by a control valve (1) are formed in the oil chamber (8); and a circumferential rotating and limiting mechanism is arranged between the piston intermediate (5) and the shafting end connection flange (4). The safety coupling is simple in structure and convenient to use, and can quickly cut off connection between a host and a shafting, so that a large-displacement impact isolator can be applied to the marine host, an impact load borne by the host is smaller than the inherent impact resistance of the host, and the safety of the host is ensured.

Description

technical field [0001] The invention relates to a coupling of a ship's propulsion shafting, in particular to a marine impact cut-off safety coupling that automatically disconnects the main engine from the shafting when the displacement of the main engine of the ship is too large under the condition of underwater explosion impact. Background technique [0002] The ship propulsion system generally adopts reliability design, and by installing multiple engines and multiple propellers, it can avoid the loss of power of the ship due to the failure of the main engine. However, the underwater explosion shock is one of the important factors that military ships need to consider. When one main engine is damaged by impact, the other main engines are basically damaged by the same impact load. Therefore, the reliability design of multiple engines and multiple propellers cannot solve the impact security issues. Since the main engine usually adopts mature products, its impact resistance ha...

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of traditional universal joints is that there is a power limit and cannot be used for large ships

However, the traditional safety coupling uses automatic breaking connection parts to play a safety protection role, and it is difficult to consider the rapid recovery of the shafting function

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