JP2000160846A - Form support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a form support device suitable for use at the time when concrete is placed in a ceiling part. SOLUTION: A jack support 1 is provided with a base 101 at one end in the axial direction and the other end is a free end 102. One end side of a first cylindrical body 2 is incorporated with the free end 102 of the jack support 1 to be made transferable along the axial direction of the jack support 1. A second cylindrical body 3 is fitted to the first cylindrical body 2 and transferred along the axial direction of the first cylindrical body 2. A first adjusting mechanism 41 is provided between the jack support 1 and the first cylindrical body 2 to adjust the height of the other end of the first cylindrical body 2. A second adjusting mechanism is provided between the first cylindrical body 2 and the second cylindrical body 3 to adjust the relative position of the second cylindrical body 3, regarding the other end of the first cylindrical body 2 as the standard.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a form supporting apparatus mainly used for placing concrete in a ceiling.

[0002]

2. Description of the Related Art A form supporting apparatus of this type is used for placing concrete such as slabs and beams constituting a ceiling portion.
It is used to support the formwork (plywood), the joists attached to the formwork, and the pulling that supports them from below.

[0003] A conventional form supporting apparatus is composed of a first cylindrical body, a second cylindrical body, and a second cylindrical body.
And the third cylindrical body. First
Has a base plate at one end in the axial direction, and is erected on the ground at the base plate portion. The second cylinder is inserted into the inside of the first cylinder from an opening opened on the other end side of the first cylinder. The length of the second cylinder is substantially the same as the length of the first cylinder. Therefore, in the combined state, the second
Most of the cylindrical body is housed inside the first cylindrical body,
The first cylindrical body is brought into the outside. The third cylinder is
The other end of the second cylindrical body is fitted to be extendable and contractible.

In the form supporting device having the above-described structure, the diameter of the second cylinder is the smallest. This second cylinder must also satisfy the required mechanical strength. Therefore, conventionally, the outer diameter of the second cylindrical body is selected to be about 48.6 mm. A first fitting fitted to the outside of the second cylindrical body
Is naturally larger than the outer diameter 48.6 mm of the second cylinder. Generally, the outer diameter is selected to be about 60 mm or more.

[0005] As described above, in the conventional form support device, the second cylinder having substantially the same length as the first cylinder is formed by:
Since the structure was housed inside the first cylinder, the structure became double and very heavy. For this reason, when transporting or installing the form support device, a heavy burden is imposed on the operator.

In the combined state, most of the second cylinder is housed inside the first cylinder, and the first cylinder whose outer diameter is as large as about 60 mm or more appears to the outside. . When an average Japanese grasps the first cylindrical body having an outer diameter of 60 mm or more with one hand, a gap usually occurs between the tip of the thumb and the tip of the other finger. For this reason, when a worker needs to grasp or operate the form support device with one hand, the worker has a heavy burden.

[0007] If the outer diameter of the first cylinder is reduced to a size suitable for being carried by one hand, the above-mentioned problem caused by one-hand operation can be solved. However, in this case, safety has been confirmed for the outer diameter of the second cylindrical body.
It must be smaller than 6 mm, making it difficult to satisfy the required mechanical strength.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide a formwork supporting device which is suitable for use in placing concrete in a ceiling portion.

Another object of the present invention is to provide a form support device which is lighter in weight than a conventional form support device, and therefore can reduce the burden on an operator.

[0010] Still another object of the present invention is to provide a form supporting apparatus which satisfies the required mechanical strength and which allows an operator to easily perform one-handed operation.

[0011]

In order to solve the above-mentioned problems, a form supporting apparatus according to the present invention comprises a jack support,
A first tubular body, a second tubular body, a first adjusting mechanism,
A second adjustment mechanism.

The jack support has a base at one end in the axial direction, and the other end is a free end.

The first cylindrical body has an inner diameter larger than an outer diameter of the jack support, one end of which is combined with the free end of the jack support, and can move along the axial direction of the jack support.

The second cylindrical body has an inner diameter larger than an outer diameter of the first cylindrical body, a length dimension shorter than a length dimension of the first cylindrical body, and The first cylindrical member is fitted to the cylindrical member and can move along the axial direction of the first cylindrical member.

The first adjusting mechanism is provided between the jack support and the first cylindrical body, and adjusts a height position of the other end of the first cylindrical body with respect to the base. adjust.

[0016] The second adjusting mechanism is provided between the first cylindrical body and the second cylindrical body, and the second adjusting mechanism is provided with the other end of the first cylindrical body as a reference. Adjust the relative position of the two cylindrical bodies.

The formwork supporting device according to the present invention is used when placing concrete, for example, a slab or a beam, on a ceiling portion in a construction work. Support joist.

As described above, in the form supporting apparatus according to the present invention, the jack support has a base at one end in the axial direction, and the other end is a free end. According to this structure,
When the formwork supporting device is installed on the floor, the entire structure can be supported by the base of the jack support.

The first cylindrical body has an inner diameter larger than the outer diameter of the jack support, one end of which is combined with the free end of the jack support, and can move along the axial direction of the jack support. The first adjusting mechanism is provided between the jack support and the first cylindrical body, and adjusts a height position of the other end of the first cylindrical body with respect to the base. According to this structure, the length dimension (height dimension) of the entire form support device can be set and positioned so as to correspond to the height dimension from the floor surface to the ceiling.

The second cylindrical body has an inner diameter larger than an outer diameter of the first cylindrical body, a length dimension shorter than a length dimension of the first cylindrical body, and a first cylindrical body. The first cylindrical body is fitted and can move along the axial direction of the first cylindrical body. The second adjusting mechanism is provided between the first tubular body and the second tubular body, and adjusts a relative position of the second tubular body with respect to the other end of the first tubular body. adjust. According to this structure, a height position such as a bar and a joist is determined.

From the above, a form supporting apparatus suitable for use in placing concrete in the ceiling is obtained.

Here, in the form supporting apparatus according to the present invention,
Since the first tubular body has a structure in which one end side is combined with the free end of the jack support, it is not necessary to have a double structure unlike the conventional form support device. For this reason, it is lightweight as compared with the conventional form support device, and thus the burden on the operator can be reduced.

In the assembled state, most of the first cylindrical body is exposed to the outside and constitutes a main rod portion of the form support device. Therefore, by setting the outer diameter of the first cylindrical body constituting the main rod portion to a size suitable for being carried by one hand (for example, less than 60 mm), the operator can hold the first cylindrical body with one hand. An operable form support device is obtained.

Further, the outer diameter of the first cylindrical body constituting the main rod portion is set to a dimension (for example, 48.6) capable of guaranteeing mechanical strength.
mm or more), the required mechanical strength can be ensured. For this reason, a form supporting device that satisfies the required mechanical strength and that allows the operator to easily perform one-handed operation is obtained.

Other objects, configurations and advantages of the present invention will be described in more detail with reference to the accompanying drawings as embodiments.

[0026]

1 is an exploded sectional view of a form supporting apparatus according to the present invention, and FIG. 2 is a partially cutaway front view of the form supporting apparatus shown in FIG. The form support device according to the present invention,
Jack support 1, first cylindrical body 2, and second cylindrical body 3
And a first adjustment mechanism 41 and a second adjustment mechanism 42. These components are generally formed using a metal material mainly containing iron. However, for the purpose of reducing mechanical strength and weight, other metal materials or alloy materials can be used.

The jack support 1 has a base 101 at one end in the axial direction a1, and a free end 102 at the other end.
The first cylindrical body 2 has an inner diameter larger than the outer diameter of the jack support 1, one end of which is combined with the free end 102 of the jack support 1, and can move along the axial direction of the jack support 1.

The second cylindrical body 3 has an inner diameter of the first cylindrical body 2.
Is larger than the outer diameter of the first cylindrical body 2, the length is shorter than the length of the first cylindrical body 2, the first cylindrical body 2 is fitted, and the first cylindrical body 2 moves along the axial direction. it can.

The first adjusting mechanism 41 is provided between the jack support 1 and the first cylindrical body 2, and adjusts the height position of the other end of the first cylindrical body 2 with respect to the base 101. adjust. The second adjusting mechanism 42 includes a first cylindrical member 2 and a second cylindrical member 3.
And adjusts the relative position of the second tubular body 3 with respect to the other end of the first tubular body 2.

Hereinafter, a jack support 1, a first cylindrical body 2,
The second cylindrical body 3, the first adjusting mechanism 41, and the second adjusting mechanism 42 will be described in more detail with reference to the drawings.

<Jack Support> FIG. 3 is an enlarged fragmentary sectional view of the jack support 1 shown in FIG. As shown in FIG. 3, the jack support 1 has a male screw portion on the outer periphery, and a first adjustment mechanism 41 formed of a first rotating body is screw-coupled to the male screw portion, and the periphery of the jack support 1 is adjusted. By rotating, it moves up and down along the axial direction a1.

The jack support 1 has a cap 11. The cap 11 has a length dimension L <b> 1, one end of which is coupled to the free end 102 of the jack strut 1 and includes a protrusion 111 at the other end. The protrusion 111 has an outer diameter D111 suitable for being fitted inside the first cylindrical body 2.
Having. The projecting portion 111 of the cap 11 is fitted to one end of the first cylindrical body to constitute a first swing prevention mechanism. The cap 11 is made of a metal material or a resin material such as plastic or rubber. In the embodiment, the cap 11 is made of a metal material such as iron and is welded to the jack support 1.

Further, the jack support 1 includes a first rotating body 4.
The cylindrical body 12 is provided on the upper surface 410 side of the first. The cylinder 12 is
Includes a protrusion 121 and a protrusion 122. Projection 121
Is such that the outer diameter D121 is substantially equal to the outer diameter D111 of the protrusion 111. The protrusion 122 has one end connected to the protrusion 121, the other end connected to the upper surface 410 of the first rotating body 41, and has an outer diameter D122 smaller than the outer diameter D121 of the protrusion 121. The protrusion 121 of the cylindrical body 12 is fitted into one end of the first cylindrical body to constitute a second swing prevention mechanism.

As shown in FIG. 3, an interval L3 is formed between the protrusion 111 and the protrusion 121. This interval L3
The first rotating body 41 is moved from the base 101 to the free end 102
When the first rotating body 41 and the cap 11 come into contact with each other, the minimum value (length L1 of the cap 11) is taken.

The function of preventing the protrusions 111 and 121 from swinging is as follows.
The longer the length L1 of the cap 11, the better. However, as the length L1 of the cap 11 increases, problems such as difficulty in fitting the first cylindrical body, increase in the weight of the jack support 1, and increase in manufacturing cost occur. In consideration of these, the most preferable length dimension L1 is about 250 mm.

The specific effects of the first adjusting mechanism 41, the first swing preventing mechanism and the second swing preventing mechanism will be described later in detail.

<First Cylindrical Body> FIG. 4 shows the first cylindrical body shown in FIG.
It is an expanded fragmentary sectional view of the cylindrical body 2 of FIG. First cylindrical body 2
Has a tubular portion 20, a support plate 21, and a fastening means 22. The cylindrical portion 20 has an inner diameter D21 having an outer diameter D111 of the protrusion 111 and an outer diameter D121 of the protrusion 121 (see FIG. 3).
And a plurality of through holes 23. Through hole 23
Are provided at a pitch interval ΔL from each other along the length direction of the cylindrical portion 20. The number of the through holes 23 and the pitch interval ΔL can be arbitrarily changed as necessary. The tubular portion 20 is preferably formed using a pipe having an outer diameter dimension D22 of about 48.6 mm or more and less than 60 mm. When the outer diameter dimension D22 is within the above-described dimension range,
The required mechanical strength is satisfied, and the operator can easily perform one-handed operation. Particularly preferred outer diameter dimension D22
Is about 48.6 mm. The outer diameter dimension D22 is about 48.
When the diameter is 6 mm, a general-purpose pipe that is easily available and inexpensive can be used as the cylindrical portion 20.

In the embodiment, the first cylindrical body 2 further includes a reinforcing pipe 24. The reinforcing pipe 24 has an outer diameter of the cylindrical portion 2.
It is almost the same as the inside diameter of 0, the length dimension is shorter than the length dimension of the tube part 20, and it is arranged in the tube part 20 at the middle part in the length direction. Further, the cylindrical portion 20 has one or a plurality of holes 200 at predetermined positions corresponding to the length of the reinforcing pipe 24. The reinforcing pipe 24 is connected to the cylindrical portion 20 through the hole 200 by means such as welding.

The support plate 21 is connected to the other end of the cylindrical portion 20 in the longitudinal direction by means such as welding. The fastening means 22 is for fixing the cylindrical portion 20 and the jack support 1, and is combined with the through hole 23 at one end side in the length direction of the cylindrical portion 20. Tightening means 2
For 2, for example, a thumb screw or the like is used.

<Second Cylindrical Body> FIG. 5 shows the second cylindrical body shown in FIG.
FIG. 6 is a plan view of the second tubular body 3 shown in FIG. 5, and FIG. 7 is a side view of the second tubular body 3 shown in FIG. is there. In the embodiment shown in FIGS. 5 and 6,
The second tubular body 3 includes a tubular portion 30 and a receiving portion 31,
It is combined with the second rotating body 421.

The cylindrical portion 30 includes a male screw portion and a guide groove 300.
And The external thread portion is provided on the outer periphery of the cylindrical portion 30,
The guide groove 300 extends by a length L2 along the length direction of the cylindrical portion 30 in the male screw portion. The second rotating body 421 is screw-coupled to the male screw portion, and moves up and down along the length direction by rotating around the cylindrical portion 31.

Here, the inner diameter D31 of the cylindrical portion 30 is larger than the outer diameter of the first cylindrical body. The cylindrical portion 30
Must have a wall thickness sufficient to satisfy the required mechanical strength. The outer diameter dimension D32 of the cylindrical portion 30 is determined in consideration of these. The outer diameter of the first cylindrical body is about 4
When a general-purpose pipe of 8.6 mm is used, a pipe having an outer diameter D32 of about 60 mm can be used as the second cylindrical body.

The receiving portion 31 includes an upper surface plate 311 and two side plates 312 and 313, and is formed by means such as welding.
It is connected to one end side of the cylindrical portion 30. Side plates 312, 3
13 are erected on opposite sides of the upper surface plate 311 with a space D32 therebetween in the width direction Y. The upper surface plate 311 is
A hole 320 is provided at the center. The hole 320 has a diameter corresponding to the inner diameter D <b> 31 of the cylindrical portion 30 and is continuous with the opening of the cylindrical portion 30. In the embodiment, the upper surface plate 311, the side surface plate 312,
Each of the 313 includes a plurality of holes 321. Hole 32
Numeral 1 plays a role of reducing the weight of the receiving portion 31, and the number and the location of the receiving portion 31 can be arbitrarily changed as long as the mechanical strength is secured.

Further, in the embodiment, the upper plate 311 is provided with bent pieces 314 and 315 at both ends in the length direction X.
The receiving portion 31 described above is configured by performing bending, pressing, or the like on a metal plate.

<First Adjusting Mechanism> FIG. 8 is an enlarged partial sectional view showing a combined state of the jack column 1 and the first cylindrical body 2 shown in FIG. In the figures, FIG. 3 and FIG.
Are denoted by the same reference numerals. As shown in FIG.
The lower end surface of the first cylindrical body 2 combined with the upper surface 410 of the first rotating body 41 corresponding to the first adjusting mechanism
Supported by Therefore, the first cylindrical body 2
Moves in accordance with the movement of the jack support 1.

At this time, as shown in FIG. 8, the inner wall surface of the first cylindrical body 2 is in contact with two portions of the end surface of the protruding portion 111 and the end surface of the protruding portion 121 as shown in FIG. For this reason, the swing of the first cylindrical body 2 is greatly reduced.

Further, the inner wall surface of the first cylindrical body 2 and the projection 1
A fastening means 22 is provided between the end face 22 and the end face 22. According to this structure, the tip of the fastening means 22 is pressed against the end face of the protruding portion 122, whereby the swinging of the first cylindrical body 2 is almost completely suppressed.

<Second Adjusting Mechanism> FIG. 9 is an enlarged partial cross-sectional view showing a combined state of the first cylindrical body 2 and the second cylindrical body 3 shown in FIG. In the drawings, the same components as those shown in FIGS. 3 to 7 are denoted by the same reference numerals. As shown in FIG. 9, the form support device according to the present invention further includes a pin 422. Pin 422 is
It penetrates through the guide groove 300 and one of the through holes 23, contacts the lower surface of the second rotating body 421, and receives the cylindrical portion 30.

Here, each of the through holes 23 is
0 are provided at a pitch interval ΔL from each other along the length direction. Therefore, when connecting the pin 422, the relative position of the second cylindrical body 3 with respect to the first cylindrical body 2 depends on the selected through-hole among the through-holes 23 by the pitch interval ΔL. Change. That is,
The combination of the pin 422 and any one of the through holes 23 corresponds to a coarse adjustment mechanism in the second adjustment mechanism 42.

Next, the guide groove 310 extends by the length L2 along the length direction of the cylindrical portion 30. Therefore,
After the adjustment by the coarse adjustment mechanism, the first rotary member 421 is rotated around the cylindrical portion 30 so that the first cylindrical member 2 is rotated.
The relative position of the second cylindrical body 3 with respect to the pin 422 changes continuously. That is, the guide groove 30
The combination of 0, the second rotating body 421 and the pin 422 corresponds to a fine adjustment mechanism in the second adjustment mechanism 42.

<Usage Method> The formwork supporting apparatus according to the present invention is used for placing concrete in a ceiling portion in a construction work. I support. Hereinafter, a method of using the form support device according to the present invention will be described with reference to FIGS. However, in FIGS. 10 to 19, the same components as those shown in FIGS. 1 to 9 are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 10 is a front view showing a use state of the form support device according to the present invention, and FIG. 11 is a side view of FIG. First, as shown in FIGS.
Are erected at intervals over the entire floor surface. At this time, in the form support device 5, the jack support 1 has a base 101 at one end in the axial direction, and the other end is a free end. According to this structure, when the form support device 5 is installed on the floor, the entire structure can be supported by the base 101 of the jack support 1.

Further, the first cylindrical body 2 has an inner diameter larger than the outer diameter of the jack support 1, one end of which is combined with the free end of the jack support 1, and can move along the axial direction of the jack support 1. . The first adjustment mechanism 41 is provided between the jack support 1 and the first cylindrical body 2, and includes a base 101.
The height position of the other end of the first cylindrical body 2 is adjusted with reference to. According to this structure, the first
The height position of the other end of the cylindrical body 2 can be adjusted to the same height h. As a result, in each of the form support devices 5, the height from the floor surface to the support plate 21 of the first cylindrical body 2 is set to the same dimension H.

FIG. 12 is a front view showing a use state following the use state of FIG. 10, and FIG. 13 is a side view of FIG. next,
As shown in FIGS. 12 and 13, in each of the form support devices 5, the roughing 6 is placed on the receiving portion 31 of the second cylindrical body 3.
1 and 62 are installed, and the distance regulating members 63 and 64 are
1 and 62.

Here, the second cylindrical body 3 has an inner diameter larger than the outer diameter of the first cylindrical body 2 and a length shorter than the length of the first cylindrical body 2. Further, the first cylindrical body 2 is fitted to the first cylindrical body 2 and can move along the axial direction a2 of the first cylindrical body 2. The second adjusting mechanism 42 includes the first cylindrical body 2 and the second cylindrical body 2.
And adjusts the relative position of the second tubular body 3 with respect to the other end of the first tubular body 2. According to this structure, the distance G1 between the support plate 21 of the first cylindrical body 2 and the receiving portion 31 of the second cylindrical body 3 is set to
The thickness can be adjusted to be the sum of the thickness t1 of 62 and the thickness t2 of the gap regulating members 63 and 64. As a result, the large pullers 61 and 62 and the interval regulating members 63 and 64 are fixed by the support plate 21 of the first tubular body 2 and the receiving portion 31 of the second tubular body 3.

Here, in the form supporting device 5 according to the present invention, the first cylindrical body 2 has a structure in which one end side is combined with the free end of the jack support 1, so that it is similar to the conventional form supporting device. There is no need to have a double structure. For this reason, the form support device 5 according to the present invention is about 20 to 30% lighter than the conventional form support device, so that the burden on the worker can be reduced.

In the combined state, the first cylindrical body 2 is
Most of it is exposed to the outside and constitutes a main rod portion of the form support device 5. Therefore, by setting the outer diameter of the first tubular body 2 to a dimension suitable for being carried by one hand, for example, 60 mm or less, a mold that allows an operator to operate the first tubular body 2 with one hand. A support device is obtained. Moreover, by setting the outer diameter of the first cylindrical body 2 to a dimension (for example, 48.6 mm) or more that can guarantee mechanical strength, necessary mechanical strength can be secured. For this reason, the form support device 5 that satisfies the required mechanical strength and that allows the operator to easily perform one-handed operation is obtained.

FIG. 14 is a front view showing a use state following the use state of FIG. 12, and FIG. 15 is a side view of FIG. next,
As shown in FIGS. 14 and 15, joists 71, 72, 73,.
Are installed on the large pulleys 61 and 62 at a distance from each other so as to be substantially orthogonal to the arrangement direction of the large pulleys 61 and 62. Therefore, joists 71, 72, 73,.
Is combined in a lattice shape at a position of height H from the floor surface.

Here, the thickness t3 of the joists 71, 72, 73,..., The thickness t2 of the gap regulating members 63 and 64, and the thickness t4 of the support plate 21 are t3 = t2 + t4.
Are set in advance so that the following relationship is established. Therefore, the upper surface of the support plate 21 and the upper surfaces of the joists 71, 72, 73,... Are aligned at the same height.

FIG. 16 is a front view showing a use state following the use state of FIG. 14, and FIG. 17 is a side view of FIG. next,
As shown in FIGS. 16 and 17, joists 71, 72, 73,.
Spread plywood 8 on the top. Although not shown, concrete is then cast on the plywood 8.

<Another Embodiment> FIG. 18 is a front view showing another embodiment of a mold supporting apparatus according to the present invention. In the figures, the same components as those shown in FIGS. 1, 2 and 5 to 7 are denoted by the same reference numerals. The feature of the embodiment shown in FIG. 18 is that the second cylindrical body 3 has concave portions 316 and 317 in the upper surface plate 311 of the receiving portion 31. The concave portions 316 and 317 are provided on both sides of the cylindrical portion 20 with an interval therebetween.

FIG. 19 is an enlarged fragmentary sectional view showing the use state of the form support device shown in FIG. In the case of this embodiment, when the large pulls 61 and 62 are placed on the upper surface plate 311 of the receiving portion 31, the large pull 61 is held in the concave portion 316 and the large pull 62 is placed in the concave portion 317 as shown in FIG. Will be retained. For this reason, the worker is relieved of the trouble of paying attention to the misalignment of the large pulleys 61 and 62.

FIG. 20 is a front view showing still another embodiment of the form supporting apparatus according to the present invention. The feature of the embodiment shown in FIG. 20 is that the other end of the cylindrical portion 20 is a free end, and the cylindrical portion 30 has a receiving portion 33 on the upper end surface. The receiving portion 33 has a hole 330 at the center, and the hole 330
It has a diameter corresponding to the inner diameter of the cylindrical portion 30 and is connected to the opening of the cylindrical portion 30.

FIG. 21 is an enlarged fragmentary sectional view showing a use state of the form support device shown in FIG. The height position from the base 101 to the other end of the first cylindrical body 2 is adjusted by the first adjusting mechanism 41. However, there may be a case where it is necessary to support the large pull 65 or the like at a position higher than the upper limit that can be adjusted by the first adjusting mechanism 41. In such a case, in the present embodiment, as shown in FIG. 21, the other end of the tubular portion 20 can be housed in the tubular portion 30. , 65 can be supported.

<Mounting Tool> FIG. 22 is a perspective view showing a mounting tool. This attachment is disposed at the intersection of the pull and the joist, and is used to connect the two.

As already described with reference to FIGS. 16 and 17, the gibs 61 and 62 and the joists 71, 72, 73,... Are arranged in a lattice pattern. At this time, the adjacent Daiki 61
If the spacing between the stub and the stub, and the spacing between the adjacent joists are not uniform, after the concrete is cast, the load of the concrete concentrates on the large spacing,
The veneer plate constituting the formwork is bent, and in the worst case, ready-mixed concrete may flow out. The fixtures shown in FIG. 22 are arranged so that the distance between the adjacent joists and the interval between the adjacent joists are even, and the positional shift may occur. It is used as a means to prevent this.

The attachment 9 shown in FIG. 22 is made of a synthetic resin such as plantic, and includes a first holding piece 91 and a second holding piece 92 as shown in FIG. The first holding piece 91 is curved at both ends and has an opening 910 between both ends.
Having. The second holding piece 92 is curved at both ends and has an opening 920 between both ends. The first holding piece 91 and the second holding piece 92 are formed by a pipe mounting direction a3 of the first holding piece 91 and a pipe mounting direction a of the second holding piece 92.
4 are connected to each other so as to be substantially orthogonal to each other.

In the embodiment, the first holding piece 91 and the second
Each of the holding pieces 92 is curved into a shape corresponding to a round pipe, but may be curved into a shape corresponding to a square pipe.

FIG. 23 is a diagram showing a state of use of the fixture shown in FIG. Here, a description will be given of a crossing portion between the large pull 62 and the joist 72, and description of the other cross portion between the large pull and the joist will be omitted.

The first holding piece 91 is curved at both ends and has an opening 910 between both ends. Therefore, the first holding piece 91 can be attached to the large pulley 62 from the opening 910.

The second holding piece 92 is curved at both ends and has an opening 920 between both ends. Therefore, the joist 72 can be attached to the second holding piece 92 from the opening 920.

Here, since the attachment 9 is made of a resin such as plantic, the large pull 62 and the joist 72 once mounted are used.
However, it does not come off from the first holding piece 91 and the second holding piece 92. Therefore, by performing such work on all the crossover parts, the intervals between the adjacent jokes and the intervals between the adjacent joists are equalized. In addition, it is possible to prevent misalignment between the heavy duty and the joist at the intersection.

[0073]

As described above, according to the present invention, the following effects can be obtained. (A) It is possible to provide a formwork supporting device that is suitable for use in placing concrete in a ceiling portion. (B) lighter than conventional formwork support devices, and
A form support device that can reduce the burden on the operator can be provided. (C) It is possible to provide a formwork supporting device that satisfies the required mechanical strength and that allows a worker to easily execute one-handed operation.

[Brief description of the drawings]

FIG. 1 is an exploded side view showing the structure of a form support device according to the present invention.

FIG. 2 is a side view of the form support device according to the present invention.

FIG. 3 is an enlarged fragmentary sectional view of the jack column 1 shown in FIG.

FIG. 4 is an enlarged fragmentary sectional view of the first tubular body shown in FIG. 1;

FIG. 5 is an enlarged partial cross-sectional view of a second cylindrical body 3 shown in FIG.

FIG. 6 is a plan view of a second cylindrical body shown in FIG.

FIG. 7 is a side view of the second cylindrical body shown in FIG.

FIG. 8 is an enlarged partial cross-sectional view showing a combined state of the jack support and the first tubular body shown in FIG. 2;

FIG. 9 is an enlarged partial cross-sectional view showing a combined state of the first tubular body and the second tubular body shown in FIG. 2;

FIG. 10 is a front view showing a use state of the form support device according to the present invention.

FIG. 11 is a side view of FIG. 10;

FIG. 12 is a front view showing a use state next to the use state of FIG. 10;

FIG. 13 is a side view of FIG.

FIG. 14 is a front view showing a use state following the use state of FIG. 12;

FIG. 15 is a side view of FIG. 14;

FIG. 16 is a front view showing a use state next to the use state of FIG. 14;

FIG. 17 is a side view of FIG. 16;

FIG. 18 is a front view showing another embodiment of the form support device according to the present invention.

FIG. 19 is an enlarged partial sectional view showing a use state of the form support device shown in FIG. 18;

FIG. 20 is a front view showing still another embodiment of the form support device according to the present invention.

FIG. 21 is an enlarged partial sectional view showing a use state of the form support device shown in FIG. 20;

FIG. 22 is a perspective view showing an attachment used in the use state of FIGS.

FIG. 23 is a view showing a use state of the mounting tool shown in FIG. 22;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Jack support 2 1st cylindrical body 3 2nd cylindrical body 41 1st adjustment mechanism 42 2nd adjustment mechanism 5 Form support device 61, 62 Enlargement 63, 64 Interval regulation member 71, 72, ... Joist 8 plywood 9 mounting fixture

Claims (9)

[Claims] 1. A jack support, a first tubular body, and a second
A tubular support, a first adjusting mechanism, and a second adjusting mechanism, wherein the jack support has a base at one end in the axial direction, and the other end has a free end. The first cylindrical body has an inner diameter larger than an outer diameter of the jack support, one end of which is combined with the free end of the jack support, and can move along the axial direction of the jack support, The second tubular body has an inner diameter larger than an outer diameter of the first tubular body, a length dimension shorter than a length dimension of the first tubular body, and The first adjustment mechanism is fitted between the jack support and the first cylindrical body, and can be moved along the axial direction of the first cylindrical body. Adjusting the height position of the other end of the first tubular body, wherein the second adjusting mechanism is configured to Provided between the second tubular member, the mold frame support device for adjusting the relative position of the second tubular member relative to the said other end of said first tubular member. 2. The formwork supporting device according to claim 1, wherein the jack support has a male screw portion on an outer periphery, the first adjustment mechanism includes a first rotating body, The form support device, wherein the first rotating body is screwed to the male screw portion and receives the one end of the first cylindrical body. 3. The formwork supporting device according to claim 1, wherein the second adjustment mechanism includes a coarse adjustment mechanism and a fine adjustment mechanism, and the coarse adjustment mechanism includes the first adjustment mechanism. The second with respect to the cylindrical body
The fine adjustment mechanism adjusts the relative position of the cylindrical body in a stepwise manner, after the adjustment by the coarse adjustment mechanism, the relative position of the second cylindrical body with respect to the first cylindrical body, A formwork support device that adjusts continuously. 4. The formwork supporting device according to claim 1, wherein the second cylindrical body has a length dimension equal to a length dimension of the first cylindrical body. Formwork supporting device which is about 1/3 of the size. 5. The form support device according to claim 1, wherein the jack support has a first end on the free end in the axial direction.
The first anti-sway mechanism is provided at the free end in the axial direction so as to protrude in the radial direction, and the end face contacts the inner wall surface of the first cylindrical body. Formwork support device. 6. The form support device according to claim 5, further comprising a second swing prevention mechanism on an upper end surface side of the first rotating body. 7. The form support device according to claim 1, wherein the first cylindrical body includes a support plate at the other end in a length direction, and the second cylindrical body includes a support plate. A formwork supporting device, wherein the tubular body has a receiving portion on the other end side in the length direction. 8. The formwork supporting device according to claim 7, wherein the receiving portion has two concave portions, and each of the concave portions is provided on a surface facing the support plate.
Form support devices provided at an interval from each other. 9. The form support device according to claim 1, wherein the first cylindrical body has a free end at the other end in the length direction, and A form support device, wherein the second cylindrical body has a support plate at the other end in the length direction.