Static structures (e.g. – buildings) – With lifting or handling means for primary component or... – Construction or component having means to engage hand or...
Patent
1997-03-26
1999-03-16
Kent, Christopher
Static structures (e.g., buildings)
With lifting or handling means for primary component or...
Construction or component having means to engage hand or...
521256, 521231, 52749, 526531, 5265101, 5265105, E02D 3500, E04G 2114, E04H 1234
Patent
active
058815040
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a all-weather type temporary frame system for construction which permits constructional work to be performed even under bad weather conditions.
2. Background Art
There has been proposed an all-weather type temporary frame as a temporary foothold for construction of a high-rise building of RC construction. The temporary frame includes a plurality of temporary support frames vertically provided around a planned building to be constructed, and a canopy frame supported at the upper portion between respective temporary support frames and having a shape sufficient for covering entire upper surface of the planned building. According to increasing the height of the constructed building, the temporary support frames are added upwardly to elevate the canopy frame so that constructional work can be performed without being affected by the weather.
On the other hand, an overhead travelling crane is arranged on the lower surface of the canopy frame. Building materials lifted by lifting equipment, such as a cargo lift, a man/cargo elevator or so forth are transported to various portions by the overhead traveling crane for performing assembling work.
The overhead traveling crane includes a main girder reciprocally movable along a main rail, a subsidiary girder reciprocally movable along a subsidiary rail arranged at the side of the main rail in parallel to the latter, and a hoist movable along the main girder and the subsidiary girder for transit between respective girders at the condition where both girders are matched in alignment. Generally, two hoists are provided in the overhead traveling crane. At a condition where one of the hoists is moved on the main girder, the building material is lifted into the intended floor for execution by the lifting equipment. At this condition, the main girder is moved along the main rail to transfer the hoist to one of the subsidiary girders which is placed in alignment with the main rail. The subsidiary girder, to which the hoist is transferred from the main rail, is moved along the subsidiary rail for transporting the building material to the destinated position.
Meanwhile, in the temporary frame system, in order to constantly arrange the canopy frame immediately above the floor for executing the constructional work, it becomes necessary to sequentially rise depending upon progress of the constructional work. Conventionally, in Japanese Unexamined Patent Publication (Kokai) No. Heisei 4-221172, for example, discloses a method of lifting the temporary support frames by a lifting means, arranged around the temporary support frame (temporary tower) on the ground, to add new supporting material at the lower side.
On the other hand, in Japanese Unexamined Patent Publication No. Heisei 5-59817, for example, there has been proposed a method, in which the temporary support frame is constructed with a plurality of telescopic long posts each of which is expandable. Also, a work station is arranged at the upper portion of the long posts, and by expanding the long posts sequentially, the work station is elevated.
However, the former invention increased weight of the added temporary supporting materials is increased in accordance with the rising temporary frame. Accordingly, load on the lifting means is sequentially increased. The lifting means requires a large driving force to be preliminarily set with taking the final weight to be lifted into account.
On the other hand, the latter invention requires a large driving force since overall load is exerted on the long posts from initiation of lifting. Furthermore, extracting length of the long post is increased at every occasion of expansion of the post to cause instability of supporting moment at joint portions of the post.
Furthermore, in either invention, since the temporary support itself is moved and support therefore cannot be provided by the building under construction, and self-standing of the individual support frame can become more unstable with taller b
REFERENCES:
patent: 3748805 (1973-07-01), Boros
patent: 3921362 (1975-11-01), Cortina
patent: 4197689 (1980-04-01), DeMuth
patent: 5417018 (1995-05-01), Matsumoto et al.
Furuya Noriyuki
Hishikawa Kyoichi
Ikeda Hiroaki
Kurita Kohei
Ono Hideo
Edwards W. Glenn
Kent Christopher
Obayashi Corporation
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