GB2248871A

GB2248871A - Support structure for construction work

Info

Publication number: GB2248871A
Application number: GB9104594A
Authority: GB
Inventors: Ryoichi Nakajima; Seiichi Kaneoka
Original assignee: Hory Corp
Current assignee: Hory Corp
Priority date: 1990-10-17
Filing date: 1991-03-05
Publication date: 1992-04-22
Anticipated expiration: 2011-03-05
Also published as: JPH0466255U; JP2537584Y2; GB2248871B; GB9104594D0

Abstract

A support comprises an extendible vertical 1, 2; a pair of extendible horizontals 7, 11 each foldable to lie alongside the vertical and having a strut 13, 16 with a hinge intermediate its ends. A brace 26 may also be provided. <IMAGE>

Description

TEMPORARY BEAM FOR USE IN SLAB-TYPE FRAMES The present invention relates to a temporary beam for use in slab-type frames which is mainly used in system-type frame construction methods at a construction site and is erected between opposing beam-type frames when supporting a slab-type frame above a foundation surface, and relates particularly to an ideal temporary beam for supporting a slab-type frame used in multi-unit housing such as condominiums and the like which are not relatively large.

Conventionally, a method has been presented in which one main beam having inserted in the longitudinally central part thereof a support part is supported, through the medium of this support part and in a T form, on the upper ends of a plurality of support materials which are freely extendible in an up-and-down direction and are in the uppermost positions thereof; a pair of left and right side beams are inserted, within the two ends of this main beam, in a left/right extendible fashion through the medium of fixed metal parts.

In addition, one end of a left and right pair of support part materials are attached to the lower surface of both end parts of the main beam, and the other end of each of these support part materials are supported on both sides of the lower end of the support materials in the uppermost positions thereof (for example, Utility Model Number 61-98137).

However, when in use, after the extension of the support materials in an upwards direction has been completed, the support part of the longitudinally central part of the main beam is supported, in a T form, on the upper ends of the support materials in the uppermost positions thereof, next, the left and right side beams are appropriately extended from within the two ends of the main beam to the left and right sides, and the forward ends of the side beams are suspended from the beam side plates of the beam frames which face each other.Then, the other end of the left and right support part materials, one end of each of which is attached to the lower surface of the end parts of the main beam, is supported on both sides of the lower end of the support materials in the uppermost positions thereof, and because of this, the upward extension operation of each support material, the support operation of the main beam on the upper end of the support materials, the extension operation of each side beam in the direction of the left and right sides, and the support operation of each support part material on the support materials are necessary, so that the assembly process at the construction site is difficult.Furthermore, when not in use, after the other ends of the left and right support part materials have been removed from both sides of the lower end of the support materials in the uppermost positions thereof, the forward ends of the left and right side beams are removed from the beam side plates of the beam frames, the side beams are retracted from the left and right sides to within the two ends of the main beam, and each support material is retracted downwardly, and because of this, the removal operation of the support part materials from the support materials, the retraction operation of the side beams to within the main beam, the removal operation of the main beam from the upper ends of the support materials, and the retraction operation of the support materials in a downward direction are necessary, so that not only is the disassembly process at the work site difficult, but the apparatus itself is bulky and quite inconvenient to transport and store.

The present invention is designed to solve the problems stated above. It provides a temporary beam for use in slabtype frames which is not only quite easy to assemble at a construction site when in use, but can also be quite easily disassembled at a work site when not in use; furthermore, the apparatus is not bulky and is extremely convenient to transport and store.

In order to accomplish the above purposes, in the present invention, a plurality of support materials with differing diameters are inserted in an upwardly and downwardly extendible manner, the base ends of a left and right pair of main beams are supported, foldable from the left and right sides in a downward direction, on both sides of the upper end of the support materials in the highest position thereof through the medium of brackets. Within the forward end parts of each main beam, a left and right pair of side beams, provided at the forward ends thereof with a suspension plate for suspension from the beam side surface of the beam frame, are inserted in an extendible manner to the left and right through the medium of an acceptable adjustment means.In addition, both ends of a left and right pair of support part materials which can be folded at a suitable longitudinal position are swingably supported on the lower side of the forward edge part of the main beams and both sides of the lower edge parts of the support materials in the upper position thereof.

Furthermore, it is preferable that suspension fittings which are detachably suspended from suspension pins at roughly the central part longitudinally of the support part materials at the upper edges thereof support swingably the provided strengthening part materials in the bracket at the base edge side of each main beam.

By means of the technological steps given above, at the time of use, first each support material is extended upward on the foundation surface of the construction site in correspondence with the height of the beam frame. Then by swinging the left and right main beams to the left and right and thus opening them, the left and right support part materials are also extended in a straight-line form. Then the left and right side beams are extended from within each main beam to the left and right to an appropriate length through the medium of appropriate adjustment mechanisms, and the suspension plate at the forward end of each side beam is suspended from the corresponding beam side plate of the beam frame.On the other hand, when not in use, first the left and right side beams are withdrawn from the left and right sides to within the each main beam through the medium of appropriate adjustment mechanisms. Then, by swinging the left and right main beams in a downward direction and folding them, the left and right support part materials are also folded at an appropriate longitudinal position, and then each support material is withdrawn in a downward direction.

Furthermore, when in operation, by swinging each strengthening part material and suspending the suspension fitting at the forward end thereof from the suspension pin which is roughly at the longitudinal center of each support part material, the strength of each support part material is increased remarkably.

Brief Description of the Drawings Figure 1 is a front view of a preferred embodiment of the present invention.

Figure 2 is a front view of the same preferred embodiment in a folded state.

Figure 3 is a front view of the same preferred embodiment with strengthening part materials attached.

Figure 4 is a front view of the apparatus of Figure 3 in a folded state.

Figure 5 is a cutaway angled view showing the state in which the suspension fitting of the strengthening part material is suspended from the support part material.

Hereinafter, a preferred embodiment of the present invention will be explained with reference to the diagrams.

As shown in Figures 1 and 2, first the lower end of a round-pipe-form upper support material 3, which has a diameter which is slightly larger than that of a round-pipeform lower support material 2 which has attached at its lower end a jack base 1 for the purpose of adjusting the height thereof, is placed over the upper end of the lower support material 2 extendably upwards and downwards by means of a suspension pin 5 inserted in pin insertion hole 4 of the connecting part. The longitudinally central portion of a a bracket 6 which has an inverted-U shape is firmly affixed to the upper end of this upper support material 3, forming a Tshape.Next, the base ends of a right and left pair of rectangular-pipe-form main beams 7 are supported within both ends of bracket 6, through the medium of axle pins 9 in axle holes 8, in such a manner that they are downwardly foldable from the right and left sides. A left and right pair of rectangular-pipe-form side beams 11, which have a slightly smaller cross-section than main beams 7 and are provided at the forward ends thereof with suspension plates 10 for suspension from the beam side plates of the beam frame, are inserted into the forward end of each main beam 7 in an leftand-right extendible manner through the medium of adjustment mechanisms 12 such as bolts and linchpins attached to the lower surface of the forward end of each main beam 7.In addition, both ends of a left and right pair of support part materials 15, in which two rectangular-pipe-form brace materials 13 are connected in a foldable manner by hinge 14 at two ends thereof, are supported at the lower surface of the forward end of each main beam 7 and both sides of the lower end of upper support materials 3, in a manner in which they are swingable to the side of upper support material 3 and to the side of main beam 7, through the medium of axle pin 19 in axle hole 18 of axle holders 16 and 17.

Furthermore, jack base 1 is provided with a base plate 22, for attachment to the foundation surface, at the lower end of screw rod 21, which has screw part 20 on its outer diameter. In addition, adjustment nut 23, which is for the adjustment of the height of lower support material 2, screws onto screw part 20 of screw rod 21 in an upwardly and downwardly movable fashion.

Both ends of a left and right pair of support part materials 15, those on the side of the lower surface of the forward end of main beams 7 and those on both sides of the lower end of upper support material 3, are supported in a manner in which they are swingable only to the side of the upper support material 3 and to the side of the main beams 7.

However, this is not necessarily so limited; as shown in Figures 3 and 4, it is possible that a strengthening part material 26, which is provided with a suspension fitting 25 which is detachably suspended from a suspension pin 24 which is roughly in the longitudinal center of support part mechanism 15, be supported at the forward end thereof by an axle pin 27 in a manner in which it is swingable to the left and right. That is, the suspension fitting 25 of the strengthening part material 26 is provided, as shown in Figure 5, with a inverted-U shape suspension plate 28, which has a width slightly larger than the outer width of support part material 15, and with suspension indentations 29 and pin holes 30 on both sides of suspension plate 28.On the other hand, suspension pins 24 for suspension in suspension indentations 29 are provided on both sides of one brace material 13 at roughly a longitudinally central position along support part material 15, and pin penetration pipe 32, which is penetrated from pin hole 30 by set pin 31 and stops set pin 31, is provided within the other brace material 13.

As the present invention is constructed in the above manner, at the time of use, first each support material is extended upward on the foundation surface of the construction site in correspondence with the height of the beam frame.

Then by swinging the left and right main beams to the left and right and thus opening them, the left and right support part materials are also extended in a straight-line form.

Then the left and right side beams are extended from within each main beam to the left and right to an appropriate length through the medium of appropriate adjustment mechanisms, and the suspension plate at the forward end of each side beam is suspended from the corresponding beam side plate of the beam frame. Accordingly, only the upward extension operation of each support material, the opening operation of each main beam to the left and right, and the extension operation of each side beam to the left and right are necessary, so that the conventional support operation of the main beam on the upper end of the support materials and the support operation of each support part material on the support materials are unnecessary, and the assembly operation at the construction site is much easier.

Moreover, when not in use, first the left and right side beams are withdrawn from the left and right sides to within the each main beam through the medium of appropriate adjustment mechanisms. Then, by swinging the left and right main beams in a downward direction and folding them, the left and right support part materials are also folded at an appropriate longitudinal position, and then each support material is withdrawn in a downward direction.Accordingly, only the withdrawal operation of each side beam to within each main beam, the folding operation of each main beam in a downward direction, and the withdrawal operation of each support material in a downward direction are necessary, so that the conventional removal operation of each support part material from the support materials and the removal operation of the main beams from the upper ends of the support materials are unnecessary, and not only is the disassembly operation at the construction site much easier, but since it is possible to fold the apparatus compactly, it is not bulky and is convenient to transport and store.

Furthermore, by supporting in a swingable fashion the strengthening part material, which is provided with a suspension fitting which is detachably suspended from the suspension pin which is roughly at a longitudinally central position along the support part material, in the bracket at the base end of each main beam, and by swinging each strengthening part material when in operation and suspending the suspension fitting at the forward end thereof from the suspension pin which is roughly in a longitudinally central position along the support part material, the strength of each support part material is increased remarkably, so that this is far more stable than the case in which the weight of the slabs upon the left and right main beams and the left and right side beams is supported by each support material and each support part material alone, and it is possible to have a large span between the beam frames which face each other at a construction site. Accordingly, it is possible to adapt one sort of apparatus to each type of beam frame spacing in which the spans differ, and this is thus especially suited to the support of slab-type frames for use in multi-unit housing such as mansions and the like in which the height is comparatively small.

Finally, the temporary beam for use in slab-type frames is erected between beam frames which face each other at a construction site and can support slab-type frames above a foundation surface, so that the slab weight is dispersed and a large weight is not placed on the beam side plates of each beam frame, and it is of course possible to remove the beam frame quickly.

Claims

What is claimed is:

1. A temporary beam for use in slab-type frames, in which: a plurality of support materials with differing diameters are inserted in an upwardly and downwardly extendible manner; base ends of a left and right pair of main beams are supported, foldable from the left and right sides in a downward direction, on both sides of upper ends of the support materials in a highest position thereof through the medium of brackets; within forward end parts of each main beam, a left and right pair of side beams, provided at forward ends thereof with suspension plates for suspension from a beam side surface of a beam frame, are inserted in an extendible fashion to the left and right through the medium of an acceptable adjustment means; and both ends of a left and right pair of support part materials which can be folded at a suitable longitudinal position are swingably supported on the lower side of the forward edge part of the main beams and both sides of the lower edge parts of the support materials in upper positions thereof.

2. A temporary beam for use in slab-type frames in accordance with claim 1, in which strengthening part materials, which are provided with suspension fittings which are detachably suspended from suspension pins at roughly a central part longitudinally of the support part materials at upper edges thereof, are supported swingably in a bracket at the base edge side of each main beam.

3. A temporary beam for use in slab-type frames, substantially as hereinbefore described with reference to the accompanying drawings.