JPH0736005Y2 - Concrete formwork support structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a concrete formwork support structure for supporting a concrete formwork for a beam and a concrete formwork for a slab connected to both sides thereof.

(Prior Art and its Problems) A concrete formwork for a beam is supported at a predetermined height by supporting both ends of a flap material that supports the bottom of the beam with a pair of left and right support columns. Further, the concrete formwork for slabs connected to both sides of the concrete formwork for beams is supported through a flap on a support column that is erected in an appropriate arrangement on the floor surface. For the support of the concrete formwork for slabs at the location adjacent to the concrete formwork for beams, a support column dedicated to supporting the concrete formwork for slabs, which is different from the support column for supporting the concrete formwork for beams, is also provided. Had been used. That is, conventionally, it was not possible to support the concrete formwork for slabs with the support columns for supporting the concrete formwork for beams, so that the number of support columns used is increased and the cost is increased.

In order to solve such a problem, for example, the actual development Sho 61-9
As described in No. 8136 and No. 49-151226,
Between the pair of left and right flap receivers, each of which is mounted on the pair of left and right vertical screw shafts with adjustable height, the butter material that supports the bottom of the concrete formwork for beams is hung, A concrete formwork support structure was conceived in which the concrete formwork for slabs connected to the above was supported by the upper ends of the screw shafts.

In this type of concrete formwork support structure, the concrete formwork for beams is first adjusted in height and supported at a predetermined level, and then the concrete formwork for slabs placed on both left and right sides of the concrete formwork for beams is specified. It is necessary to adjust the level and support the concrete form for beams and the concrete form for slabs in such a state.

Thus, in the conventional concrete formwork support structure described in each of the above publications, in order to adjust the support level of the slab concrete formwork, a pair of left and right screw shafts that support the slab concrete formwork at the upper end portion. It is necessary to rotate the nut-shaped stopper mounted on the upper end of the support supporting these screw shafts to rotate it up and down. As the screw shaft moves up and down, the concrete formwork for beams is supported. The flap receiver receiving the flap material moves up and down together.

That is, even if the height of the concrete formwork for the beam is supported first, when the support level of the concrete formwork for the slab is adjusted later, the support level of the concrete formwork for the beam may change. Therefore, there is a disadvantage that the support level of the concrete formwork for the beam has to be newly adjusted.

(Means for Solving the Problems) In order to solve the above conventional problems, the present invention provides
A jack consisting of a pair of upper and lower stoppers and a flap receiver located between the stoppers is screwed onto the screw shaft so that the height can be adjusted freely. The lower end of the projecting screw shaft is fitted into the support by fitting it inside, and the bottom of the concrete formwork for the beam is supported by the flap material that is hung between the flap receivers of both jacks, and it projects upward from the upper stoppers of both jacks. At the upper end of the screw shaft, there is proposed a concrete formwork support structure in which a pair of support members for supporting the concrete formwork for slabs connected to both sides of the concrete formwork for beams are externally fitted. is there.

(Embodiment) An embodiment of the present invention will be described below with reference to the attached exemplary drawings.

In FIGS. 1 and 2, 1 is a concrete formwork for a beam, which is composed of left and right side formwork parts 2a, 2b and a bottom side formwork part 2c, and both left and right side formwork parts 2a, 2b are It is held at a constant interval by the separator 3. Reference numerals 4,5 denote concrete formwork for slabs, which are connected to the upper ends of the left and right formwork parts 2a, 2b of the concrete formwork 1 for beams, respectively. Reference numeral 6 denotes a frame scaffolding support arranged below the concrete formwork 1 for a beam, and a pair of left and right support columns 7 and 8 are integrally connected to each other by a cross member 9 near the upper end. Each of the support columns 7 and 8 is a conventionally known one in which a height adjusting jack 10 is connected to the lower end of a pipe member having a constant length. The frame scaffolding supports 6 are arranged at appropriate intervals in the length direction of the beam concrete form 1, and the adjacent supports 6 are connected to each other by the support shaft 12 at the center of the two connecting members 11a and 11b. X-shaped connecting link that is pivotally attached to open and close freely
13 are connected in parallel with each other.

Jacks 14 and 15 are connected to the upper ends of the pair of left and right support columns 7 and 8 of the frame scaffolding support 6, respectively. Both jacks 14 and 15 have the same structure and, as shown in FIG. 3, a pair of upper and lower stoppers 16a and 16a.
A b and a flap receiver 17 located between the stoppers 16a and 16b are screwed onto a screw shaft 18 so that their heights can be adjusted.
Each stopper 16a, 16b is provided with a lever 19 for rotation operation in a protruding manner, and the flap receiver 17 is provided with a pair of flap receiving portions 17a, 17b projecting on both sides of the screw shaft 18.

Both jacks 14 and 15 are connected to the support columns 7 and 8 by internally fitting a screw shaft lower end portion 18b protruding downward from the lower stopper 16b to the upper ends of the support columns 7 and 8. ing. However, the two flap members 20a, 20b for supporting the bottom mold portion 2c of the beam concrete mold 1 are provided in the flap receiving portions 17a, 17b of the flap receivers 17 of the jacks 14, 15, respectively.
Both ends of are fitted and supported with the screw shaft 18 sandwiched therebetween. or,
The screw shaft upper end portion 18a protruding upward from the upper stoppers 16a of both jacks 14 and 15 is fitted with support members 21 and 22 made of a pipe material of a fixed length, respectively, and the upper ends of the support members 21 and 22. The concrete forms 4, 5 for the slab are supported by the flap receiver 23 and the flap material 24.

The height of the flap 17 of each jack 14, 15 is adjusted in advance with respect to the screw shaft 18, but the height of the flap 17 after supporting the flaps 20a, 20b supporting the concrete formwork 1 for a beam is increased. The height can be adjusted by adjusting the height of the lower stopper 16b with respect to the screw shaft 18. In addition, adjustment of the support height of concrete formwork 4 and 5 for slabs (adjustment of the height of support members 21 and 22)
Can be performed by adjusting the height of the upper stopper 16a with respect to the screw shaft 18.

Note that the structure of the flap receiver 17 and the structures of the support members 21 and 22 are not limited to those in the above embodiment. Further, although the pair of left and right support columns 7 and 8 in the frame scaffolding support 6 are used, independent support columns 7 and 8 may be used.

(Operation and Effect of the Invention) As described above, according to the concrete formwork support structure of the present invention, the pair of support columns (7, 8) for supporting the concrete formwork for beam (1) is used to The concrete formwork for slabs (4,5) connected to both sides of the concrete formwork for beams (1) can be supported. Particularly, according to the configuration of the present invention, each jack (14,15) is supported. ) Is a screw shaft (18), a pair of upper and lower stoppers (16a, 16b) screwed to the screw shaft (18) in a height-adjustable manner, and a screw shaft (16a, 16b) between the stoppers (16a, 16b). 18) and a flap receiver (17) that is screwed to adjust the height, and a lower stopper (16) is attached to each of the upper ends of a pair of left and right support columns (7, 8).
Attach the lower end (18b) of the screw shaft projecting downward from b) by fitting it inside the pillars (7, 8), and attach both jacks (14, 15).
The bottom of the concrete formwork (1) for beams is supported by the flap material (20a, 20b) that is hung between the flap receivers (17), and protrudes upward from the upper stoppers (16a) of both jacks (14, 15). A pair of support members (21, 22) for supporting the concrete formworks for slabs (4,5) connected to both sides of the concrete formwork for beams (1) are attached to the upper end (18a) of the screw shaft. Since they are formed by external fitting, the following special effects have been obtained.

That is, after adjusting the height of the flap receiver (17) to the screw shaft (18) of both jacks (14, 15) to an appropriate substantially same level, the screw shafts (18) of both jacks (14, 15) are adjusted. The lower end member (18b) is fitted and supported by a pair of left and right support columns (7, 8), and the beam concrete formwork (1) is laid on the flap material (20a, 20b) that is hung between the flap receivers (17). ) Is placed and supported. And
Rotate the lower stopper (16b) with respect to the screw shaft (18) to move the screw shaft (18) up and down with respect to the support columns (7, 8), and then hang it between the flap receivers (17). The concrete formwork (1) for beams is supported horizontally at a predetermined height by adjusting the height of the passed flaps (20a, 20b) and adjusting the levelness.

Next, the upper end (18) of the screw shaft (18) of both jacks (14,15)
After supporting the concrete formwork for slabs (4,5) at the upper ends of the support members (21, 22) fitted and supported in a), rotate the upper stopper (16a) with respect to the screw shaft (18). Then, the support members (21, 22) are moved up and down with respect to the screw shaft (18), so that the concrete mold for slabs is at a level at which it can be normally connected to the concrete formwork for beams (1) whose height has been adjusted previously. Frame (4,
By adjusting the height of 5), both concrete formwork (1,4,5) can be connected and integrated with each other.

As described above, by adjusting the height of the pair of upper and lower stoppers (16a, 16b) which are screw-fitted to the screw shaft (18) so that the height can be adjusted separately, the concrete formwork (1) for beams is first adjusted. After adjusting the height to a predetermined level and adjusting the horizontality, the concrete formwork for slab (4,5) was changed to the concrete formwork for beam (1) without changing the level of the concrete formwork for beam (1). ) Can be adjusted to the level for coupling to.

Therefore, it is possible to very simply, easily and efficiently perform a series of work in which the concrete form for beam (1) is temporarily installed first and the concrete form for slab (4,5) is then installed temporarily.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view, FIG. 2 is a side view thereof, and FIG. 3 is a front view of a jack to be used. 1 ... Concrete formwork for beams, 4,5 ... Concrete formwork for slabs, 6 ... Support for scaffolding scaffolding, 7,8 ... Support stanchions, 14,15 ... Jack, 16a, 16b ... Up and down A pair of stoppers, 17,23 …… Batch holder, 18 …… Screw shaft, 20
a, 20b, 24 …… Butter material, 21,22 …… Supporting member.

Claims (1)

[Scope of utility model registration request] 1. A jack comprising a pair of upper and lower stoppers, and a flap receiver located between the stoppers, which are screw-fitted to a screw shaft such that the heights thereof are adjustable, is provided at the upper ends of the pair of left and right support columns. The lower end of the screw shaft projecting downward from the side stopper is fitted into the support by fitting it inside, and the bottom part of the concrete formwork for beams is supported by the butter material suspended between the butter receivers of both jacks. Concrete formwork support structure in which a pair of support members for supporting the concrete formwork for slabs connected to both sides of the concrete formwork for beams are externally fitted to the upper end of the screw shaft projecting upward from the stopper. .