Ship hull sectional turn-over method and special-purpose rolling rack

A roll cage and hull technology, applied in ship parts, ship construction, ships, etc., can solve the problems of small segment division, segmental or segmental partial structure wrinkle, poor safety, etc. Good quality and stress state

CN100348456CInactive Publication Date: 2007-11-14TIANJIN UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2007-11-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for sectional turning the ship and special rolling bracket, comprising: (1) each side edge of one end of section has one arc rolling bracket while its axis is parallel to the sectional turning surface; (2) the invention uses the crane to hang the another end of section to turn the section for 180 degrees along the arc surface of rolling bracket to complete the sectional turning. The inventive special rolling bracket has a round arc surface and a connection plate arranged on the chord of round arc and connected to the section via connection hole. Compared to present technique, the invention can fully utilize the lifting ability of crane while the section weight can be two times of the section weight turned by two crane; since the section is large, the number of sections is fewer, the closing quality of ship is confirmed, and the period of building ship can be shorted; since the section is turned by the support of rolling bracket, it has better support condition, reliable safety, simple operation, and fast turning speed.
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Description

Technical field

[0001] The invention relates to the field of shipbuilding, in particular to a method for turning over the hull in sections during the hull building process and a special rolling frame.

Background technique

[0002] During the construction of the hull, because the hull is built by the segmented reflexive construction method, when some sections of the hull are built, they need to be turned over before they can be hoisted to the berth for the large closure of the hull. In the prior art, general small and medium-sized shipyards now adopt the crane combined turnover method to carry out segmental turnover operations. That is: according to the size and weight of the segment, use two cranes (or one crane and one truck crane, or one crane and two truck cranes) to lift the segment at both ends, and then loosen the cable at one end of the crane, and The section is only hung by the crane at the other end, and then the section is turned 180°, and the original crane i...

Examples

Embodiment Construction

[0021] In the segmental overturning method of the hull of the present invention, at first two sides of one end of the segment 2 are respectively fixed with 3 roll racks with a 180° arcuate surface, and the axis of the arcuate roll rack needs to be parallel to the segmental overturning surface. And the chord where the arc is located is perpendicular to the longitudinal axis of the segment; Then lift the other end of the segment with the crane 1, as shown in Figure 1, at this moment the roller frame is supporting the segment and rolls on the ground; when θ=90° , the crane extends the boom forward (for the bridge crane, it moves the trolley in the direction of overturning), so that θ>90°, and the inclined state is formed in sections, as shown in Figure 2. At this time, as the cable is loosened by the crane, the section rolls to the other side with the roller frame under the action of gravity until the section is in a horizontal state, and the section turns over and ends.

[0022]...