SU685551A1 - Caisson for ship repairs - Google Patents

Description

one

The invention relates to half-water technical works in ship repair and is intended to perform welding work on the hull of the vessel below the waterline afloat.

Known caissons for the production of works on the hull of the vessel below the waterline, in which the frame is made of rigid power set and faced with water-resistant material. The edges of the walls of the caisson correspond to the ship's contours in this area of the vessel and are sheathed with soft pillows to better fit the hull 1. Such a caisson is designed to repair a specific area of the ship's hull, the entrance to the caisson, the delivery of metal and equipment is carried out .

Also known caissons, containing the power frame, made of longitudinal and transverse sets, covered by an elastic sheath, and the seal in the form of tracks on both sides of the caisson 2.

However, the known caissons are difficult to operate, unpleasant and cumbersome when used on ships with a large displacement.

The aim of the invention is to provide a close fit of the caisson to the hull of the vessel while localizing repair work sites in the underwater part of the vessel.

To do this, the caisson contains a power frame, which is made of longitudinal and transverse sets interconnected movably. Kar0 kas covers elastic shell. Along the perimeter of the power frame there is a seal made in the form of a hose. At the bottom of the caisson hatch is located.

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Figure 1 shows the proposed caisson, a view from the end; figure 2 - the same, type x: top; fig. 3 - the same, in the working state.

The caisson consists of a power cage containing a transverse set 1 (in the form of arcuate tubular frames), spacers 2, hermetically sealed and fixed, for example / by welding below the ends of the frames

5 (if parts of a torn hole protrude). At the extreme frames installed struts 2 ,. at their ends and vertical ties 3. A longitudinal set of 4 caissons (stringers and keelson) also

Claims (2)

0 is made of hermetically sealed off slab and attached to the transverse set (frames) with bolts 5. The arcuate part of the power frame is covered with an elastic casing 6 of durable waterproof material that is fixed to the frames; inwards and safety valves 9 (with increasing pressure in the working compartment). Along the perimeter of the open part of the caisson is a tightly fixed seal 10, made in the form of a hose made of durable material. The seal is equipped with a valve 11 for filling it with compressed air. Eye-bolts 12 are installed along the sides of the caisson to lift its ships with a crane and to tighten them with cables under the ship's hull. The caisson is placed by the ship crane on the deck of the ship, connected with the front set 4 (Kilsons, stringers) with the transverse set 1, covered with a sheath 6. The lower part of the cesson on the inside is covered with heat-resistant material, for example, asbestos cloth (during welding). The caisson is lifted by a crane on the eyebolts 12 lowered overboard and pinched with cables from the opposite side under the hull of the ship to the place of the breach. Compressed air is injected into the seal 10 until it is pressed against the hull casing around the entire perimeter of the caisson (checked by the repairman). Through the measuring rub of the damaged compartment, the vessel is forcing compressed air, and the water is squeezed out of the compartment and the working space of the caisson through the open hatch 7. The repairmen enter through the cauldron 7, close the lid 8 and give a signal to shut off the air supply. atmospheric and repair nicks begin to repair damage to the hull. During the repair in the caisson, the heated air is used to ventilate and maintain the normal temperature. polluted air escapes through the second open metering tube. At the end of the repair work, they gradually increase the pressure in the caisson to the outside, open the door of the hatch and the repairmen go outside. Air is released from the seal 10 and the caisson is lifted onto the deck of the ships. The bolts securing the longitudinal set are removed and the caisson is placed for storage on the ship. The bolted joint of the transverse 1 and the longitudinal 4 Set, the elasticity of the shell 6 and the seal 10 (shlagga) allow the caisson to bend and take the form of complex taps of the ship hull. In the non-working state and with the longitudinal set disconnected, the elements of the transverse set can be shifted together due to the elastic sheathing and the kniss occupies a smaller volume, thus it is suitable for transportation and storage on the ship. Claim 1. The caisson for repairing ships, containing a power frame made of longitudinal and transverse sets covered by an elastic sheath, and a seal that, in order to ensure a tight fit to the hull of the vessel, localization of repair work sites in the underwater part of the vessel; the longitudinal and submerged pepper sets of the frame are interconnected movably, and the seal is made in the form of a hose and is located along the perimeter of the power frame. 2. The caisson pop. Sources of information taken into account in the examination 3. N. Smirnova. Fighting fires and water on the coral, m,. Military Publishing, 1966, pp.133-134, fig.63. 2. USSR author's certificate 437657, cl. B 63 C 11/34, OS03.71 (prototype). 12 / d 7777777777777777777777777777777/ Rig 3