Load rejection device for underwater vehicle

Abstract

The invention discloses a load rejection device for an underwater vehicle. The load rejection device comprises a hydraulic cylinder, two lifting ring screws, a front side plate, a rear side plate, topplates, first rotating shafts, limiting blocks, a left fork, a second rotating shaft, a right fork, a lingual plate and pin shafts. The left fork and the right fork are arranged in a bilateral symmetry mode, and are in the same shape and each in a hook shape, circular holes are formed in the middles of the left fork and the right fork, the second rotating shaft penetrates into the circular holes,and hook parts of the left fork and the right fork are opposite to form a closed approximate circular hole for bearing a ballast; the two lifting ring screws are arranged in a bilateral symmetry mode, connected with the corresponding top plates through threads and used for lifting the whole load rejection device and the ballast. The load rejection device is simple in structure, convenient to useand easy to maintain.

Description

technical field [0001] The invention belongs to the technical field of marine structures, relates to an underwater vehicle, in particular to a dumping device for an underwater vehicle. Background technique [0002] The dumping device is mainly used in underwater vehicles, such as manned submersibles or unmanned submersibles. The ballast mainly plays the role of balancing the buoyancy of the submersible. For example, when diving, the gravity is usually greater than the buoyancy to reduce energy consumption. When approaching the operating depth, the ballast is discarded to achieve deceleration or zero buoyancy; In order to quickly return to the water surface, the ballast can also be discarded; in an emergency, the large-mass ballast can be discarded so as to quickly float up, return to the water surface, and wait for rescue. Among them, the manned submersible has a larger ballast mass due to its large volume and weight, which puts forward higher requirements on the load-beari...

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Problems solved by technology

[0003] The problems existing in the prior art are as follows: (1) electromagnet mode: utilize the adsorption force of electromagnet to directly or indirectly carry the ballast, and its advantage is that the reaction is quick, but the adsorption force is weak, if will carry the mass object, It is necessary to use multi-level levers to reduce the force step by step, and there are many links in the mechanism, and the electromagnet material (industrial pure iron) is easy to corrode in seawater, and maintenance is difficult; (2) Electrochemical corrosion method: use active metals to easily corrode in seawater Corroded characteristics, the active metal wire is tied into a knot and connected with the ballast, the diameter of the metal wire and the physical and chemical properties of seawater are known, and the corrosion rate and time of the metal wire in seawater can be calculated more accurately, but This method has a weaker carrying capacity, and is usually used for unmanned underwater equipment as a backup method of the timing dumping method; (3) Electromagnetic coil method: in the first two methods, the ballast can be regarded as a single whole, and in the electromagnetic coil method , the ballast is scattered steel balls, and an electromagnetic coil is wound around the ballast hatch; after power on, the electromagnetic force will magnetize the steel balls in the cabin to form a whole, blocking the ballast hatch; The steel balls return to a scattered state and flow out from the hatch; the main problem with this method is that the steel balls are prone to rust and form clusters in seawater, making it impossible to dump

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