RU2384454C1 - Storm ladder - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: storm ladder includes steps made of hollow tubes and arranged on two ropes between coil bushings put on ropes. Grip hooks are fixed on upper ends of ropes. From below, ropes of storm ladder end with eccentric retainers, above which compensating sleeves are put on ropes. Sleeves have a longitudinal slot extended to upper conical part of sleeves. Strom ladder gains rigidity by the ropes being tensed with eccentric retainers.

EFFECT: transportation convenience of storm ladder is achieved.

4 dwg

Description

The invention relates to ship rigging, and more specifically to a means of lifting people on board the ship and their descent overboard.

Existing storm ladders are a rope ladder made of hemp or kapron rope with wooden or fiberglass steps (balusters), lowered from the side of the vessel to raise people to the deck from boats and boats or to lower them from the deck ("Marine Encyclopedic Dictionary", Volume 2, I., L .: Shipbuilding, 1986, p. 434). A variety of designs of storm ramps can be found on the Internet at the following sites:

http://slovari.yandex.ru/dict/ushakov/

http://slovari.yandex.ru/dict/gl_natura/

The ramps of various designs described there are analogues of the invention. The great advantage of the storm ramps is that they can be folded into a small roll. As a prototype, we will choose a storm ramp according to the application No. 2001107819/28 RU of 2001.03.20.

The disadvantage of the prototype (like all other analogues) is the need to fix the storm ramp on board the vessel for the bulwark or for the guard rail and lowering it overboard by someone from the crew of the vessel.

However, sometimes it becomes necessary to board a ship hijacked by terrorists or pirates, stealthily, invisibly, in order to suddenly attack the invaders. Special assault units such as Alpha, Vympel, Berkut, and others are trained in this. To get on board a ship, they use ropes with cat-like hooks or lightweight sliding ladders. However, when approaching the ship, extraneous watercraft lose the main factor in the success of the assault - surprise.

The objective of the present invention is to provide a storm trap (it would be more correct to call it “storm trap”), which could be used by a fighter-diver (combat swimmer) from under the water. This should be a very light and sufficiently strong structure, towed by a diver and having buoyancy close to zero. An ordinary aluminum ladder is not suitable, because will drown the diver when trying to lift it out of the water and hook it on the bulwark or guard rail of the vessel. It is desirable that the design of the storm ramp was folding and took up little space.

The problem can be solved if the design of the storm ramp is based on the well-known design of the Kulikov whip antenna, which has long been used in army portable KB and VHF radio stations. Its description can be found on the sites:

http://www.mobilradio.ru/information/vocabulary/antena-kulikova.htm

http://www.mobilradio.ru/options/default.htm

Kulikov’s antenna is a flexible whip antenna, which consists of a flexible steel cable, on which aluminum bushings made in the form of coils are strung. In the working position of the antenna, the cable is taut. Due to the action of the shock absorber spring, which is in a compressed state, the bushings are tightly adjacent to each other and form a flexible, stable vertical pin. The antenna can be folded by loosening the cable tension with an eccentric hinge. After loosening the cable, the antenna can be given any configuration convenient for storage or transportation.

The essence of the invention lies in the fact that two Kulikov antennas are taken and light steps made of hollow sealed tubes are placed between the coil-coils. Unlike an antenna, a storm trap is not required to be made of electrically conductive materials, so coil sleeves can be made of lightweight synthetics (fiberglass, Kevlar, carbon fiber, polyester, dinema, etc.) whose strength is several times greater than the strength of steel. The same can be said of the other parts of the storm ramp. Thus, buoyancy of the storm ramp close to zero and minimum weight in air can be achieved.

The design of the storm ramp is shown in the drawings.

Figure 1 shows a storm tram when folded.

Figure 2 shows the storm ramp in working condition (two projections),

Stormtrap consists of a flexible cable 1, bushings-reels 2, compensating bushings 3, an eccentric lock 4, the handle of the lock 5, roller 6, hook-hook 7, steps 8.

The cable 1 is attached from below to a freely rotating roller 6, which is held between the jaws of the latch 4. On top of the cable 1 is attached to a hook-hook 7. The roller 6 in the latch is offset from the center of the cheeks so that an eccentric is obtained, during rotation of which the cheeks raise or lower the compensating sleeve 3. The sleeve 3 compensates for the tension of the cable 1. It has a longitudinal slot for putting on the cable, which ends at the upper conical part of the sleeve (so that the sleeve does not fall out). In the working position, the sleeve 3 is worn on the cable (figure 2), when folded, it is laid to the side (figure 1) and the cable is free of tension. If there were no sleeve 3, then for tensioning and releasing a long cable, a clamp with a large diameter of the cheeks would be required, which would increase the dimensions and weight of the storm ramp. The sleeve-coil 2 has a variable diameter and height. The bottom of the sleeve is larger, because their great strength is required. Steps 8 are made in the form of hollow sealed tubes and have positive buoyancy, which reduces the negative buoyancy of the entire storm ramp. This ensures the convenience of its transportation by a diver under water.

The storm ramp is used as follows.

In the initial state, the storm ramp is rolled up (Fig. 1). The compensating sleeve 3 is set aside and the cable 1 is free. The lock knob 5 is in the upper position.

To bring the storm ramp into working position, the diver unwinds the roll, manually shifts the bushings 2 towards the hook-hook 7, puts the compensating bush 3 on the cable and with the handle 5 turns the lock 4 so that the clamp cheeks press the bush 3 and bushings 2 against each other. The handle of the latch 5 in this case is in the lower position. Storm trap extends into a line and becomes stiff, elastic (figure 2). The diver takes a vertical position under water, blows up the compensator vest (it is part of the diving equipment) with air, acquiring a positive buoyancy of 4-5 kg. Pops up. It takes the necessary position near a ship captured by terrorists (usually from the stern). Working as flippers on the ascent, he lifts the storm ramp out of the water and hooks its upper end 7 to the bulwark or guard rail. After that he folds the flippers (lifts the flexible part up) and climbs the ship onto the ship.

The proposed storm ramp can also be used to lift a rescue team on board an emergency ship abandoned by the crew. It can be used to lift fighters of special units aboard an aircraft captured by hijackers through emergency hatches. It can be used to overcome high fences, etc.

Claims (1)

Storm trap containing steps made of hollow tubes fixed on two cables between reel bushings mounted on them, while the upper ends of the cables end with hooks, hooks, characterized in that from the bottom the cables end with eccentric clamps, which ensure the tension of the cables over which the cables compensating sleeves having a longitudinal slot extending to the upper conical part of the sleeves are put on.

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