JPH0633131Y2 - Supporting device for concrete formwork - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a support device for a concrete formwork for supporting a formwork forming a slab or a beam of a concrete building.

[Conventional technology]

When constructing a slab or a beam in the construction of a concrete building, it is necessary to support the slab form and the beam form by supporting works provided on the slab below.

As shown in FIG. 4, the conventional supporting work connects the building frame 1 for temporary scaffolding up and down with a required number of stages by joints,
The supporting frame 2 is connected to the uppermost part by a joint.

In the building frame 1, the upper ends of the vertical pipes 3 on both sides are connected to the horizontal pipe 3a.
It has a structure formed by connecting with, forming a gate type or torii type,
Since the load is supported by the two vertical pipes 3 and 3, the allowable proof stress is 4t.

The uppermost supporting frame 2 is a vertical pipe 3 on both sides of the building frame 1,
The upper and lower ends of both side vertical pipes 4 and 4 connected to the upper end of 3 via a joint are connected by a horizontal pipe 5, and a short vertical pipe 6 is provided at the center of the upper horizontal pipe 5.
And the vertical pipes 4 and 4 on both sides are connected by diagonal members 7 and 7 that are inclined downward toward the vertical pipes 4 and 4 on both sides, and a large jack 8 is attached to the upper ends of the vertical pipes 4 and 4 and the short vertical pipe 6. It has a structure to attach and detach freely.

Since the uppermost supporting frame 2 supports the load of the form A at the upper three places, the load supporting force of each vertical pipe 4, 4, 6 is about 1.3.
The load of the short vertical pipe 6 is transmitted to the vertical pipes 4 and 4 on both sides by the diagonal members 7 and 7, and the diagonal members 7 and 7 receive the compressive load.

[Problems to be solved by the device]

By the way, the conventional support work is the construction frame 1 for temporary scaffolding at the bottom.
Since the load supporting force of the supporting frame 2 is dispersed and supported at three points, the total amount of the supporting frame 2 is not particularly improved. Moreover, since the diagonal members 7 and 7 receive the compressive load, the pipe having a large diameter is used. Must be used.

Therefore, in the support of the formwork, there are problems that the arrangement intervals of the supporting works become close, the number of members increases, and the man-hours for assembling and dismantling increase.

The problem of this invention is to solve the above problems.
It is an object of the present invention to provide a support device for a concrete formwork, which has a large load supporting force, can widen an interval pitch when supporting the formwork, and can reduce the number of steps of assembling and disassembling.

In order to solve the above problems, the present invention connects three vertical pipes arranged in parallel at predetermined intervals by horizontal pipes at the upper and lower ends, and connects the lower part of the central vertical pipe and both outer vertical pipes. A supporting frame is formed by connecting diagonal members that are inclined downward toward the central vertical pipe, and a plurality of supporting frames can be vertically connected by joints at the ends of each vertical pipe.

[Action]

When the supporting frame is connected up and down a required number of times to support the formwork, in order to support the load with the three vertical pipes connected vertically,
The load bearing capacity increases in proportion to the number of parallel vertical pipes,
The arrangement interval pitch of the supporting frames can be widened accordingly, and the total number of the supporting frames can be reduced. In addition, since a tensile load acts on the diagonal member of each supporting frame, a small diameter pipe can be used.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3 of the accompanying drawings.

As shown in the figure, the supporting device is configured by connecting a plurality of types of supporting frames 11 and 12 having different vertical height dimensions.

The structures of the support frames 11 and 12 are basically the same, and the same parts are designated by the same reference numerals.

Each support frame 11, 12 has three vertical pipes 13, 14, 15
Are arranged in parallel at equal intervals, and adjacent vertical pipes 13,
The upper and lower ends of 14, 15 are connected by an upper horizontal pipe 16 and a lower horizontal pipe 17, and the lower part of the central vertical pipe 15 and both outer vertical pipes 13, 14 are slanted downward toward the central vertical pipe 15. It has a structure in which 18 and 18 are connected.

Vertical pipes 13, 14, 1 of the support frame 12 arranged at the bottom
The lower end of 5 is supported by the jack base 19, and the upper end of each vertical pipe 13, 14, 15 of the uppermost support frame 11 is provided with a large pull jack 20 for receiving a large pull B along the lower surface of the form A. Mounted.

The upper and lower support frames 11, 12 are the vertical pipes 13, 14, 15 respectively.
The upper and lower ends are connected by a joint 21 having a step in the middle, and the brace pins 22 and 22 projecting from the upper and lower ends of the vertical pipes 13 and 14 on both sides are used to connect with an arm lock 23 in a retaining manner. It is supposed to do.

Further, the adjacent supporting devices are arranged such that the supporting frames facing each other are connected by the brace 24 using the brace pins 22 as shown in FIG.

In the case shown in the figure, two types of supporting frames 11 and 12 having different vertical height dimensions are shown, but various supporting frames having different height dimensions are prepared so as to cope with changes in the height of the slab formwork or the beam formwork. It is convenient to do this.

The supporting frame device of the present invention has the above-mentioned structure, and in order to support the form A of the slab or the beam, as shown in FIG.
Select a plurality of supporting frames 11 and 12 of the required height dimension, connect them up and down and stand upright on the lower floor slab, and finely adjust the height with the jack base 19 and the large pull jack 20, The supporting frames may be sequentially arranged at regular intervals while being connected by the braces 24.

When the form A is supported, the three vertical pipes 13, 1
Since 4 and 15 are vertically connected in series and directly support the load, each of the three load supporting portions can support a load of 2 tons, which is 1.5 times the load supporting force of the conventional supporting device. .

Further, in each of the supporting frames 11 and 12, since the diagonal members 18 and 18 are inclined downward toward the lower portion of the central vertical pipe 15, a tensile load acts in a load supporting state. The diameter of the pipe used for the diagonal members 18, 18 can be reduced.

〔effect〕

As described above, according to the present invention, the three vertical pipes are connected by the horizontal pipes, and the lower part of the central vertical pipe and both outer vertical pipes are connected by the diagonal member which is inclined downward toward the central vertical pipe. Since a supporting frame is formed and a plurality of supporting frames are vertically connected by joints at the ends of each vertical pipe, the load of the form can be directly supported by the three vertical pipes, and therefore the load can be supported. The supporting force is improved, the arrangement interval of the supporting frames can be widened correspondingly, the total amount of supporting frames used can be reduced, and the man-hours for assembling and disassembling can be reduced.

Further, the load supporting force can be improved with a minimum number of constituent members, and the diagonal member supports a tensile load, so that a small diameter pipe can be used, and the material cost and weight can be reduced.

[Brief description of drawings]

FIG. 1 is a front view showing a usage state of a supporting device according to the present invention, FIG. 2 is an exploded perspective view of the same, FIG. 3 is an enlarged front view of a supporting frame, and FIG. 4 is a conventional supporting device. It is a front view of the use condition shown. 11, 12 ... Support frame, 13, 14, 15 ... Vertical pipe, 16, 17 ... Horizontal pipe, 18 ... Diagonal material.

Claims (1)

[Scope of utility model registration request] 1. Three vertical pipes arranged in parallel at predetermined intervals are joined by horizontal pipes at upper and lower ends, and a lower part of the central vertical pipe and both outer vertical pipes are inclined downward toward the central vertical pipe. A supporting device for a concrete formwork, in which a supporting frame is formed by connecting the supporting members with each other by means of a diagonal member, and the supporting frames can be vertically connected by joints at the ends of each vertical pipe.