CN217296917U - Overlength is lifted and is hung formula frame hoist - Google Patents

Abstract

The utility model relates to a length 32.25m, wide 17.8m, weight exceed 539 tons of super large eccentric half width steel reinforced concrete combination box girder manufacturing method contains following step: integrally assembling left and right eccentric half-width steel-concrete combined box girders; hoisting and assembling the precast concrete bridge deck by using the overlong lifting frame type hoisting tool; constructing transverse wet joints of half-width prefabricated bridge decks; four beam transporting flat cars are connected in parallel to synchronously support and transport the left and right half-width steel-concrete combined box girders to integrally discharge tires; supporting the eccentric overweight half-width reinforced concrete combined box girder segment by using an integrated support pier bracket tooling system; four beam-conveying flat cars are used for conveying the eccentric sections in parallel; the deformation of the half-width steel-concrete combined box girder during the large-square wet joint construction is supported and controlled by using the rigid support piers; transporting and supporting the half-width sections by using four parallel girder transporting flat cars and supporting systems to carry out subsequent sanding and coating construction; the integrated support pier bracket tooling system and the combined multi-face stool are used for supporting the segments, so that the transportation and the support of the eccentric segments are stable.

Description

Overlength is lifted and is hung formula frame hoist

Technical Field

The utility model relates to a super long lift-type frame hoist for manufacturing super large eccentric half width steel-concrete combination box girder that is used for long 32.25m, wide 17.8m, and weight surpasss 539 tons super large eccentric half width steel-concrete combination box girder lift-type, belongs to frame hoist field of manufacturing.

Background

The ultra-large eccentric half-width steel-concrete combined box girder is of a novel structure, and the technical application of industrial manufacturing is not available at present. The ultra-large eccentric half-width steel-concrete composite beam has the characteristics of large structure size, heavy segment mass, eccentric structure and high structure size manufacturing precision, and the manufacturing of the ultra-large eccentric half-width steel-concrete composite beam mainly has the following manufacturing problems: the structure has the advantages that the structure is overlong in size, overweight in weight, eccentric in structure, high in requirements on manufacturing precision of the segments and matching precision of the segments adjacent to the segments, and the precision control is a manufacturing difficulty; secondly, the concrete prefabricated bridge deck is 30-50 tons, the lifting weight of a common single lifting crown block cannot meet the lifting requirement due to the large span of a general splicing line, and the lifting, assembling and overlapping control of the concrete prefabricated bridge deck is difficult to manufacture; thirdly, the difficulty of manufacturing how to get out of the tire after the total assembly of the segments is caused by overlong structural size, overweight mass and eccentric structure; fourthly, transportation, support and the like of the eccentric half-width reinforced concrete combined box girder after the tyre is removed are difficult points in the manufacturing process. The difficulty in the manufacturing process is to ensure that the size of the box opening of the poured finished product segment is consistent with that in the total splicing process; fifthly, due to the fact that the size is overlong, the weight is overweight, the structure is eccentric, transportation safety is guaranteed in the shipping and transportation process of the segments, and smooth hoisting of the segments in a construction site is guaranteed, so that one of difficulties needing to be considered in the manufacturing process is achieved.

SUMMERY OF THE UTILITY MODEL

The design purpose is as follows: according to the manufacturing difficulty in the background art, the super-long lifting and hanging type frame type lifting appliance for manufacturing the super-large eccentric half-width steel-concrete combined box girder is designed, wherein the super-long eccentric half-width steel-concrete combined box girder is 32.25m long, 17.8m wide and exceeds 539 tons in weight.

The design scheme is as follows: in order to realize the design purpose of the utility model. The utility model relates to an eccentric half width of cloth reinforced concrete combination case roof beam of super large, long 32.25m, wide 17.8m, weight surpass 539 tons. Therefore, the ultralong tyre hanging type frame type lifting appliance with the length of 11m and the width of 6.9m is developed, the application of the ultralong tyre hanging type frame type lifting appliance can ensure that 2 crown blocks are connected in parallel to lift and hoist the concrete precast bridge deck, the problem that a single crown block cannot meet hoisting load is solved, and the hoisting and overlapping of the large-scale overweight precast concrete bridge deck are realized.

Overlength is lifted and is hung formula frame hoist and includes the frame girder, and frame girder upper portion sets up the lug that is used for connecting two cranes hoist and mount wire rope, and frame girder lower part sets up the lug that is used for connecting prefabricated decking hoist and mount silk rope, and the lug position guarantees to be located prefabricated decking hoisting point directly over, and through adjustment cross bridge to both sides hoisting point wire rope length, realizes that aerial gesture when decking hoists is unanimous with the cross slope of decking, guarantees decking atress safe and reliable.

The technical scheme is as follows: the utility model provides an overlength is lifted and is hung formula frame hoist, overlength is lifted and is hung formula frame hoist length and be greater than 11m, and the width is greater than 6.9m, and frame girder upper portion sets up the lug that is used for connecting two cranes hoist wire rope, and frame girder lower part sets up the lug that is used for connecting prefabricated decking hoist wire rope, and the lug position is guaranteed to be located prefabricated decking hoisting point directly over, and through adjusting the horizontal bridge to both sides hoisting point wire rope length, and the aerial gesture when realizing decking hoist is unanimous with 2% cross slope of bridge floor.

Compared with the prior art, the utility model, utilize realization such as the frame hoist of research and development and control decking coincide precision, the pre-buried steel member of decking is less than or equal to 1.0mm with the girder steel baffle butt joint wrong platform, and the reinforcing bar counterpoint deviation between the prefabricated decking is less than or equal to 2.0 mm.

Drawings

Fig. 1 is a schematic diagram of the structural form and use of a frame type sling.

Fig. 2 is a schematic side view of fig. 1.

Fig. 3 is a schematic sectional view of a-a portion in fig. 1.

Fig. 4 is a schematic sectional view of part B-B of fig. 1.

Detailed Description

The present invention will be further explained with reference to fig. 1 to 4.

Overlength is lifted and is hung formula frame hoist 6, overlength is lifted and is hung formula frame hoist and package rubbing board utensil and bag and put 61, frame girder 61 upper portion sets up the lug 62 that is used for connecting 2 cranes hoist and mount wire rope, frame girder 61 lower part sets up the lug 63 that is used for connecting prefabricated decking 22 hoist and mount wire rope, lug 62 position guarantees to be located prefabricated decking 22 hoisting point directly over, and through adjustment cross bridge to both sides hoisting point wire rope 64 length, the aerial gesture when realizing decking hoist and package is unanimous with 2% cross slope of bridge floor, guarantees decking atress safe and reliable.

It is to be understood that: although above-mentioned embodiment is right the utility model discloses a design has done more detailed word description, but these word descriptions, are only right the utility model relates to a simple word description of idea, rather than right the utility model relates to a restriction of idea, any do not surpass the utility model relates to a combination, increase or the modification of idea all fall into the utility model discloses a within the protection scope.

Claims (1)

1. The utility model provides an overlength is lifted and is hung formula frame hoist, characterized by: the length of the overlength lifting type frame-type lifting appliance is larger than 11m, the width of the overlength lifting type frame-type lifting appliance is larger than 6.9m, lifting lugs used for connecting two cranes to hoist steel wire ropes are arranged on the upper portion of a frame-type main beam, lifting lugs used for connecting prefabricated bridge deck hoisting wire ropes are arranged on the lower portion of the frame-type main beam, the lifting lugs are located right above hoisting points of the prefabricated bridge deck, and the air posture when the bridge deck is hoisted is consistent with 2% cross slopes of the bridge floor by adjusting the lengths of the steel wire ropes on the two sides of the cross bridge.

Images