Device for rapidly collecting and releasing boats

Abstract

The invention relates to a device for rapidly collecting and releasing boats, which comprises a collecting and releasing arm structure, an aligning device, a decoupler, a sling and a winch, wherein one end of the collecting and releasing arm structure is connected with a mother ship and the other end of the collecting and releasing arm structure can be extended or retracted in a suspending way to provide a force applying fulcrum for collecting and releasing the boats; the aligning device is connected at the other end of the collecting and releasing arm structure and is used to align with the lifting and the lowering positions of the boats on sea surface; the decoupler is limited on the aligning device and is used to be connected with the boats; one end of the sling penetrates through a pulley fixed on the collecting and releasing arm structure in a winding way, is connected with the decoupler and is used to transmit pulling force to the decoupler; and the winch is connected with the other end of the sling to provide pulling force for collecting and releasing the boats. The device is a collecting and releasing device with complete functions and can be used to stably and rapidly lower down the boats to sea surface from the mother ship under force-seven wind sea conditions or to collect the boats back to the mother ship from sea surface.

Description

technical field [0001] The invention relates to a small boat retracting device, in particular to a small boat retracting device used for lifting operations at sea. Background technique [0002] The hoisting operation at sea, that is, using the retractable mechanism to lower the small boat from the ship (or other mother ship) to the sea surface, or retract the small boat on the sea surface to the mother ship, due to the need to work under the random disturbance of the waves, its The force of the retractable mechanism adopted is complex, the force is large, and the space occupation needs to be considered, so the design is difficult. Specifically, the following situations must be considered in the design of the retractable mechanism: [0003] 1. The retractable arm must be able to complete the landing and retraction of the small boat simply and stably without conflicting with other components on the mother ship. [0004] 2. Since the installation position of the retractable d...

AI Technical Summary

Problems solved by technology

[0004] 2. Since the installation position of the retractable device is usually high, in the case of strong wind and waves, the rolling of the mother ship will cause the small boat to swing, causing the pendulum effect

In addition, during the retraction process, the wind direction also has a great influence on the retraction process, which will also cause the boat to sway

In the process of retracting and launching the small boat, if the swinging motion is not reduced, not only will the normal service life of the sling be reduced, but sometimes accidents may even occur where the small boat collides with the mother ship or the sling breaks

[0005] 3. During the retraction process of the small boat, the external disturbance will cause the vibration of the davit, and there will be tension fluctuations in the sling. If it is not reduced, it will cause the sling to break or the winch to be damaged, so that the retraction process cannot be completed.

[0006] 4. When the boat is placed on the water surface and still keeps the hook, the boat drifts in the ocean. If the steel cable cannot be kept under tension at all times, the large swing of the boat (especially the heave) will be Normal retraction operation brings great difficulty and risk factor

[0007] Due to the above reasons, the existing retractable device can only work under low sea conditions, which greatly affects the maneuverability and supply capacity of the small boat

Images