JPH07139185A - Raising method for temporary roof - Google Patents

Abstract

PURPOSE:To perform easy and reliable raising of a temporary roof. CONSTITUTION:By expanding a guide rod 1 to support a temporary roof 30 from below, the temporary roof 30 is raised by a given pitch and the temporary roof 30 is supported by a scaffolding 31 arranged at the periphery of a building 32 under construction. The guide rod 1 is contracted and an extension stay 7 is coupled to the lower part of the guide rod and the temporary roof 30 is supported by the extension stay 7 and the guide rod 1. By repeating the above processes, in the order, the temporary roof is raised by a given pitch at a time in a state that the temporary roof 30 is supported to the scaffolding 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the construction of a building,
The present invention relates to a method for raising a temporary roof, which raises the temporary roof for protecting workers from wind and rain as the building is constructed.

[0002]

As is well known, when constructing a building, a scaffold is assembled around the building, and by using this scaffold or a floor slab that has already been constructed, the construction of the inside of the building, the outer wall, etc.,
We are assembling columns and beams. In this case, a temporary roof may be installed at the top of the building under construction in order to protect workers who work on the scaffolding or the inside of the building and building materials temporarily placed on the floor slab and the like from wind and rain.

[0003]

By the way, when installing the temporary roof, it is necessary to raise the temporary roof as the building is constructed. The building is relatively small,
When the height is low, it is possible for a worker to raise the temporary roof by using a scaffold, but when the building is large and the height is high, it is very difficult for the worker to raise the temporary roof. However, there are also dangers. Therefore, it is possible to use a crane or the like, but in this case, it is necessary to secure a place to install the crane on the construction site, and there is a problem that this place cannot be secured if the construction site is narrow. In addition, if you use a tower crane that is used to construct high-rise buildings, the construction site may be small, but in the case of a building on the 5th floor, it will be exaggerated and construction costs will rise. There was a problem of being lost.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a jack-up device for a temporary roof, which can easily and reliably raise the temporary roof without using a crane.

[0005]

In order to achieve the above object, a method of raising a temporary roof according to the present invention is such that a temporary roof is connected to an upper end of a guide rod which is vertically expandable and contractible. After supporting the temporary roof by, by raising the guide rod by a predetermined pitch by extending the guide rod, the temporary roof is supported by scaffolding provided around the building under construction, then,
It is characterized in that the step of contracting the guide rod and connecting the support rod to the lower side of the guide rod to connect the support rod and supporting the temporary roof by the support rod and the guide rod is sequentially repeated.

[0006]

In the method of raising the temporary roof according to the present invention, the temporary roof is raised by a predetermined pitch by extending the guide rods supporting the temporary roof from below, and the building under construction. By sequentially repeating the step of supporting with a scaffold provided around the, connecting the pillars by contracting the guide rods and connecting the pillars below, and repeating the step of supporting the temporary roof with the connecting pillars and the guide rods. The temporary roof is supported on a scaffold and raised at a predetermined pitch.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method for raising a temporary roof of the present invention will be described below with reference to the drawings. First, before describing the method for raising a temporary roof according to the present invention, a jack-up device used for implementing this method will be described.
1 and 2 are a plan view and a side view of the jack-up device, and in these drawings, reference numeral 1 indicates a guide rod. The guide rod 1 mainly includes an outer cylinder 2 and an inner cylinder 3 which is vertically slidably inserted into the outer cylinder 2. The outer cylinder 2 is a rectangular cylinder, and a plate 4 is formed on one side surface thereof along the axial direction. This plate 4 is connected with a stay 5 fixed to the building side, and thereby prevents the outer cylinder 2 (guide rod 1) from falling. Further, a flange portion 6 is formed at the lower end portion of the outer cylinder 2, and a connecting pillar 7 that is added to the lower end portion of the outer cylinder 2 is connected to the flange portion 6.

The inner cylinder 3 is a rectangular cylinder having a smaller diameter than the outer cylinder 2, and slide bushes 8 and 8 slidably contacting the inner surface of the outer cylinder 2 at a position slightly lower than the lower end portion and the central portion thereof.
Are fitted together, and the slide bushes 8 and 8 allow the inner cylinder 3 to smoothly slide vertically with respect to the outer cylinder 2. A connecting portion 9 is formed at the upper end of the inner cylinder 3, and the connecting portion 9 is connected to the bracket 10 so as to be rotatable about a horizontal axis. This bracket 1
0 is connected to an H-section steel 11 that supports the end of the temporary roof from below.
Are scaffolds that are sequentially assembled from the ground (biddy scaffolds)
It is designed to be supported on the upper part of 12 ...

A hydraulic cylinder (expansion / contraction drive unit) 12 is arranged in parallel with and laterally of the guide rod 1 consisting of the outer cylinder 2 and the inner cylinder 3. The lower end of the hydraulic cylinder 12 is Bracket 13 formed on the lower end side surface of the outer cylinder 2
Is rotatably connected to. On the other hand, the hydraulic cylinder 12
The tip end portion of the piston rod 12a is rotatably connected to a bracket 14 formed on the side surface of the tip end portion of the inner cylinder 3, so that the inner cylinder 3 moves up and down by expanding and contracting the piston rod 12a. It has become. A support base 16 is fixed to the side surface of the lower end portion of the outer cylinder 2, and a hydraulic unit 17 is mounted and fixed on the support base 16. From this hydraulic unit 17 to the hydraulic cylinder 12 via a hydraulic hose 18. Hydraulic oil is supplied.

On the side of the hydraulic cylinder 12,
As shown in FIGS. 3 to 5, a cylindrical sheath body 20 is arranged. A lower end portion and a central portion of the sheath body 20 are attached to the outer peripheral surface of the hydraulic cylinder 12 by metal fittings 21, and an upper end portion thereof is attached to the support member 22.
The support member 22 is composed of a base portion 22a fixed to the hydraulic cylinder 12 and support portions 22b and 22b formed at the upper and lower ends of the base portion 22a, and the lower support portion 22b has the sheath body. The upper end of 20 is supported. A rod 23 is vertically movably inserted into the sheath body 20, and the rod 23 is supported by a support portion 22b on the upper side of the support member 22 so as to be vertically slidable. Rod 2
3, the tip of the piston 3 is connected to the tip of the piston rod 12a so that it can move up and down together with the piston rod 12a.

Further, as shown in FIG. 5, a pair of limit switches 25 are provided on the base portion 22a of the support member 22.
a and 25b are provided with the rod 23 in between. The limit switch 25a is for performing the lower limit stop of the piston rod 12a, and by inserting the operator of the limit switch 25a into a notch 26 formed on the outer peripheral surface of the upper end of the rod 23 facing the limit switch 25a, the limit switch 25a Operates to control the lower limit stop of the piston rod 12a.

On the other hand, the limit switch 25b is for performing an upper limit stop of the piston rod 25b and a synchronization correction. The limit switch 25b is provided on the outer peripheral surface of the lower end of the rod 23.
The limit switch 25 in the notch 27 formed facing the
Limit switch 25b
Actuates to stop the piston rod 12a at the upper limit, and the actuating element enters a plurality of notches 28 formed at a predetermined interval in the axial direction on the outer peripheral surface of the rod 23, so that the ascent of the piston rod 12a is temporarily stopped. Then, the inclination of the temporary roof at the time of rising is suppressed by waiting for the rising of the other piston rods and carrying out the rising again. That is, since the temporary roof is raised by at least two (preferably four) guide rods 1 ... And the hydraulic cylinders 12 that raise each guide rod, the amount of rise of the piston rod 12a of each hydraulic cylinder 12 is set to a predetermined value. By correcting each pitch and making them equal, the inclination of the temporary roof when rising is suppressed.

Next, a method of raising the temporary roof according to the present invention using the jack-up device having the above structure will be described with reference to FIGS. 6 and 7. In these figures, the scaffold 31 is arranged at a site separated from the temporary roof 30, but it is actually arranged at a site capable of supporting the end portion of the temporary roof 30. Rise 4
This is performed by operating the hydraulic cylinders 12 at the same time, but only one hydraulic cylinder 12 is shown in the drawing.

First, as shown in FIG. 6A, the temporary roof 30 is set. This is performed by placing and fixing the H-section steel 11 supporting the temporary roof 30 on the uppermost part of the four-stage stacked scaffolds 31 ... Reference numeral 32 in the figure indicates a building under construction. Next, as shown in FIG. 6B, the jack-up device according to the present invention is set. This is because the guide rod 1 is erected on the ground and the building 32
This is done by connecting to the stays 5 and 5 protruding from. Then, the inner cylinder 3 of the guide rod 1 is replaced with the hydraulic cylinder 1.
The piston rod 12a of No. 2 raises it slightly, and the upper end portion is connected to the H-shaped steel 11. Although not shown, the guide rod 1 is set at four corners of the temporary roof 30.

Next, as shown in FIG. 6C, the temporary roof 30 is raised by extending the inner cylinder 3 with the piston rod 12a. This ascent is made slightly higher than the height of one step of the scaffold 31, and if this amount is raised, it automatically stops. Next, as shown in FIG. 6D, the scaffold 31 is assembled by one step. During this time, the hydraulic pressure of the hydraulic cylinder 12 is locked and the temporary roof 30 is supported by the guide rod 1. After that, as shown in FIG. 6E, the hydraulic lock of the hydraulic cylinder 12 is released, and the temporary roof 30 is lowered by its own weight and supported by the scaffold 31.

Next, as shown in FIG. 6 (f), the guide rod 1 is removed from the stays 5, 5 and the outer cylinder 2 of the guide rod 1 is raised. This rise is because the upper end of the inner cylinder 3 is connected to the H-shaped steel 11, so that the piston rod 1
It is performed by raising the outer cylinder 2 by pulling in the 2a. Next, as shown in FIG. 6 (g), a pillar 7 is installed below the raised outer cylinder 2 and the pillar 7 is connected to the lower stay 5. At this time, the hydraulic pressure of the hydraulic cylinder 12 is locked so that the outer cylinder 2 does not descend. Then, as shown in FIG. 6 (h), the piston rod 12a is extended to join the outer cylinder 2 and abut the strut 7, thereby connecting the outer cylinder 2 and the strut 7 to each other.

Next, as shown in FIG. 7A, the inner cylinder 3 is extended by the piston rod 12a to raise the temporary roof 30 by a predetermined amount and then stop. Next, as shown in FIG. 7B, the scaffold 31 is assembled by one step. During this time, the hydraulic pressure of the hydraulic cylinder 12 is locked and the temporary roof 30 is supported by the guide rod 1. Then, as shown in FIG. 7C, the hydraulic cylinder 1
The hydraulic lock 2 is released, the temporary roof 30 is lowered by its own weight, and it is supported by the scaffold 31.

Next, as shown in FIG. 7 (d), the guide rod 1 is removed from the upper stay 5 and the connecting support column 7,
The outer cylinder 2 of the guide rod 1 is raised. Then, FIG.
As shown in (e), a second extension column 7 is arranged between the raised outer cylinder 2 and the first extension column 7, and this extension column 7 is added to the first extension column 7. Join. On this occasion,
The hydraulic pressure of the hydraulic cylinder 12 is locked so that the outer cylinder 2 does not descend. Thereafter, as shown in FIG. 7 (f), the piston rod 12a is extended to bring the outer cylinder 2 into contact with the second support pillar 7 to connect the outer cylinder 2 and the support pillar 7. Then, the temporary roof 30 is raised by a predetermined amount by extending the inner cylinder 3 with the piston rod 12a, and the steps shown in FIG.
Go up to 0. Here, four piston rods 1
2a is extended, the amount of rise of the piston rod 12a of each hydraulic cylinder 12 is set to the limit switch 25
The inclination of the temporary roof 30 at the time of rising is suppressed by correcting every predetermined pitch by b and making it equal.

When the temporary roof 30 is raised by a predetermined height, the temporary roof 30 is supported by the scaffold 31,
After building the building and finishing this building for a certain amount of time,
In the same manner as above, the process of raising the temporary roof 30 and the construction of the building are sequentially repeated to construct the building while being protected by the temporary roof 30.

In the present embodiment, the case where the scaffold 31 and the support pillar 7 are stacked one by one has been described as an example, but the present invention is not limited to this, and the scaffold 31 and the support pillar 7 are added. The temporary roofs 31 may be raised by stacking a plurality of them. In addition, when building the building after raising the temporary roof 30 by a predetermined amount, as shown in FIG. 3, the outer cylinder 2 of the guide rod 1 and the H-shaped steel 11 that supports the temporary roof 30. Are connected by a turnbuckle 33 to secure the temporary roof 30 more securely.

According to the above embodiment, the guide rod 1 is
An outer cylinder 2 and an inner cylinder 3 slidably inserted into the outer cylinder 2 are provided. The upper end of the inner cylinder 3 supports a temporary roof 30, and the hydraulic cylinder 12 expands and contracts the inner cylinder. Therefore, by extending the inner cylinder with the hydraulic cylinder 12, the temporary roof 30 is lifted to be supported by the scaffold 31, and further, the inner cylinder is retracted to lift the outer cylinder and extend below the outer cylinder 2. The temporary roof 30 can be easily and surely raised by sequentially repeating the steps of joining the support columns 7 and supporting the outer cylinder 2 from below.

Although the hydraulic cylinder 12 is used for expanding and contracting the guide rod 1 in the above-mentioned embodiment, the invention is not limited to this, and other expansion / contraction drive units such as an electric cylinder and an air cylinder may be used.

[0023]

As described above, according to the method of raising the temporary roof of the present invention, the temporary roof is connected to the upper end portion of the guide rod, and after the temporary roof is supported by the guide rod, the guide rod is extended. By raising the temporary roof by a predetermined pitch by that, the temporary roof is supported by scaffolds provided around the building under construction, and then the guide rod is contracted to join the support pillars below it, Since the step of supporting the temporary roof by the added support pillars and the guide rods is sequentially repeated, the scaffolding assembled around the building under construction, even in a small construction site or in a relatively small building. The temporary roof can be easily raised by using.

[Brief description of drawings]

FIG. 1 is a front view showing a jack-up device for carrying out a method for raising a temporary roof according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is an enlarged view of an upper end portion of the jack-up device shown in FIG.

4 is a front view of a hydraulic cylinder of the jack-up device shown in FIG.

FIG. 5 is a side view of the same.

FIG. 6 is a process chart showing an embodiment of a method for raising a temporary roof according to the present invention in process order.

FIG. 7 is a process drawing showing an embodiment of the method for raising the temporary roof according to the present invention in the order of processes subsequent to FIG.

[Explanation of symbols]

 1 Guide Rod 2 Outer Cylinder 3 Inner Cylinder 7 Joint Support 12 Hydraulic Cylinder (Expansion / contraction Drive) 30 Temporary Roof 31 Scaffold 32 Building

Claims (1)

[Claims] 1. A method of raising a temporary roof which is located above a building being constructed and which is to be raised as the building is constructed. The temporary roof is provided at the upper end of a guide rod that is vertically expandable and contractible. After connecting the roofs and supporting the temporary roof with the guide rods, the guide rods are extended to raise the temporary roofs by a predetermined pitch, and the temporary roofs are provided with scaffolds provided around the building under construction. Supporting, then retracting the guide rod to add the support rod to the lower part of the guide rod, connecting the columns, and repeating the steps of supporting the temporary roof by the connecting columns and the guide rods. Method.