JPS63171981A - How to remove the sash frame and the tensile force support used for this - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] L Natsume-jo Tachijo-sarashi! The present invention relates to a method for removing a sash frame from a window opening in a building during window renovation, and a tensile force support device used therein.

When renovating an old building, it is desirable to remove the old sash frame and install a new sash frame. It is common to use a device to remove it from the window opening. Since the sash frame is partially welded to the reinforcing bars in the wall, the reinforcing bars or their welds must be torn off. Therefore, a considerable amount of force is required, so it is difficult to use a strong pulling force such as a hydraulic cylinder. One end of this hydraulic cylinder must be fixed to the frame to be removed, but the problem is where to fix the other end.

Conventionally, when removing the upper frame, for example, as shown in FIG. 6, a support 2 whose length can be adjusted by rotating a rotating body 1 in the center is placed between the walls 3 and 4 of the upper and lower window openings. The tip of the piston rod is fixed firmly to the upper frame 5 via a fixture 6, and the rear end of the hydraulic cylinder 7 is connected via a chain 8 to the bottom wall of the support 2 at a contact point. 9
I was trying to attach it to. If the support body 2 is firmly fixed between the walls, the upper frame 5 will be peeled off from the wall 3 by the force of the hydraulic cylinder 7.

If the hydraulic cylinder 7 is tilted too much, its force cannot be used effectively, and if the end of the support body 2 is pulled diagonally, there is a risk of it coming off. As shown in FIG. 7, the hydraulic cylinder 7 and the support 2 had to be placed at the same location. Therefore, the rotating body 1 and the position of the hydraulic cylinder 7 become close to each other, and the position of the hydraulic cylinder 7 becomes closer.
There was a risk that the support body 2 would move and hit when it was operated, causing the support body 2 to come off. As mentioned above, considerable force is applied to the hydraulic shin lid 7, and it would be extremely dangerous if one of its fulcrums were to come off.

In order to eliminate this risk, the present applicant has already proposed a method in which a tensile force support is attached parallel to the frame to be removed, and a tensile force support used therein (Japanese Patent Application No. 61-271739). ).

The present invention is a further improvement on the previous proposal and allows for easier, more reliable and less dangerous removal of the frame.

[Structure of the Invention] Therefore, the method of the present invention focuses on the fact that the frame is attached to four positions of the window opening, and removes other frames perpendicular to the frame to be removed, such as the top. When removing the frame and bottom frame, holes are made in the left and right vertical frames, and when removing the vertical frame, holes are made in the upper and lower frames, and between both holes, the pulling force of a hydraulic cylinder, etc. that receives the force of the device is applied. The present invention is characterized in that a support is attached and a pulling device is installed and operated between the tensile force support and the frame to be removed.

The tensile force support must have a protrusion at its tip that can be inserted into the hole, and the length of the tensile force support can be adjusted for further insertion into the hole. In the present invention, the length is adjusted by attaching a rotating body to the tensile force support and rotating the rotating body.

The tensile force support may be formed of a pipe, and the rotating body may be provided at the end of the pipe, or may be provided in the middle.If it is provided at the end, it may be provided at one or both ends; When the pipe is provided in a section, it is preferable to form a turnbuckle-type threaded section on both sides of the central section with the threading direction reversed, and to screw a pipe having a protrusion at the tip into the threaded section.

Construction J In this way, holes are provided in the other frames perpendicular to the frame to be removed, and the protrusions at both ends of the tensile force support are inserted into these holes to fix the tensile force support. When a tensioning device is installed between the force support and the frame to be removed and operated, the protrusion is inserted into the hole, so there is no fear that the tension support will come off, making the work extremely safe. becomes.

In addition, the tensile force support only needs to have protrusions formed on both ends so that its length can be adjusted by the rotation of a rotating body, so its structure is extremely simple and its handling becomes easy.

1.1 Figure 1 is a front view of one embodiment of the state in which the upper frame 10 is peeled off by the method of the present invention, in which the tensile force support 12 is fixed between the vertical frames 11 and 11, and the pulling is performed as a device. The hydraulic cylinder 13 is attached between the upper frame 10 and this tensile force support 12 and is operated. The rear end of the hydraulic cylinder 13 is fixed to the tensile force support 12 with a chain 14, so that its operation causes the upper frame 1 to
0 was pulled strongly and peeled off from the wall to which it was fixed.

In this embodiment, as shown in FIG. 2, the vertical frame l! A hole 15 is made in the hole 15, and a protrusion 16 provided at the tip of the tensile force support 12 is inserted into this hole 15 and fixed. Therefore, as shown in FIG. 3, the tensile force support 12 used in this embodiment is composed of a pipe 17 with female threads cut on the inside of both ends, and a rotating body 18 screwed into this female thread. The protrusion 16 is formed at the end of the holder. The tensile force support 12 of this embodiment is the pipe 1
Instead of cutting a female thread directly into the end of the pipe 17, a jigo point 20 with a female thread cut on the inner surface is inserted from both ends and fixed by welding, but of course it is also possible to cut a thread directly on the inner surface of the pipe 17. Reference numeral 18 is a thick disc-shaped rotating part 22 to which an adjustment pin 21 is attached which serves as a handle when rotating around the periphery, and a male threaded part 23 that is screwed into the female thread of the joint 20 is provided on one side, and the protrusion is formed on the opposite side. It is shaped like this. Further, a hook plate 24 for fixing the chain 14 is attached to the pipe 17.

As described above, the wooden tensile force support 12 has rotating bodies 18 of the same shape attached to both sides of the pipe 17, but it may also be attached only to one side. In that case, the other side of the pipe 17 is simply It is sufficient if the shape has the protrusion 16.

When removing the upper frame 10 using this, first, the holes 15 are drilled at appropriate height positions in both vertical frames 11. It is desirable that the holes 15 in both vertical frames 11 are at the same height, but there may be a slight deviation.Then, the overall length was made shorter than the interval between the vertical frames 11 and 11 in advance. With the protrusion 16 at one end of the tensile force support 12 inserted into the hole 15 of one vertical frame 11, turn the adjustment pin 21 of the rotating body 18 at the other end to lengthen the overall length.
The protrusion 16 is inserted into the hole 15 of the other vertical frame 11. Further, one or both of the adjustment pins 21 are turned to forcefully press the surface of the rotating part 22 on which the protrusion 16 is formed against the vertical frame 11, and the rotating body 18 is rotated until it stops rotating. After that, one end of the hydraulic cylinder 13 is fixed to the upper frame 10, and the chain 14 attached to the other end is connected to the tensile force support 1.
It is fixed to the hook plate 24 of No. 2. Thereafter, when the hydraulic cylinder 13 is operated, the upper frame 10 is pulled and removed from the window opening. The tensile force support 12 has its protrusion 16 inserted into the hole 15 of the vertical frame 11 and is strongly pressed between the vertical frames 11.11 by the rotation of the rotating body 18, so that it is strongly pulled by the hydraulic cylinder 13. In other words, the tensile force support 12 can reliably receive the force of the hydraulic cylinder 13. Therefore, the upper frame 10 can be removed by the attractive force of the hydraulic cylinder 13. When removing the lower frame, the same procedure can be performed by changing the position of the hole 15 formed in the vertical frame 11.

As for the vertical frame, when the upper and lower frames are peeled off, the upper and lower ends are dragged and removed, so it is desirable to remove the vertical frame while cutting the reinforcing bars using other means such as a cutting machine.

The tensile force support 12 used in the above embodiment is the pipe 1
A female thread is cut on the inner surface of the pipe 7 to form a male thread on the threaded portion 23 of the rotating body 18, but as shown in FIG.
Alternatively, as shown in FIG. 5, a male thread may be formed on the outer surface of the rotating body 26, and a female thread may be formed on the inner surface of the rotating body 26.Alternatively, as shown in FIG. It is also possible to use a pipe 32 having a protrusion 31 at the tip of the threaded part 29.30 as a tensile force support.In this case, the rotation of the rotating body 27 causes Both pipes 3
2 can be moved toward or away from each other to adjust the length, and it does not require any special explanation, and the method of removing the frame using these is also different from the case where the tensile force support 12 is used. Never.

[Effects of the Invention] As described above, the method of the present invention inserts the tip of the tensile force support into the hole formed in the other frame perpendicular to the frame to be removed and fixes it between both frames. A tensioning device is attached to the tensile force support and the frame to be removed, so that the tensile force support is securely fixed to the other frame and the tensile force support is not removed. This allows you to work safely.

In addition, the tensile force support of the present invention has projections formed on the frame at both ends, and has a rotating body that changes the overall length, so the structure is extremely simple and the handling is easy. It becomes easy.

[Brief Description of the Drawings] Figure 1 is a front view of a window in which the method of the present invention is being carried out;
FIG. 2 is a perspective view of the holed part of another frame, FIG. 3 is a perspective view of the end of one embodiment of the tensile force support of the present invention,
FIG. 4 is a front view of one end of another tensile force support;
FIG. 5 is a front view of yet another tensile force support, FIG. 6 is a sectional view of the frame removed by the conventional method, and FIG. 7 is a front view thereof. 10: Upper frame, 11: Vertical frame, 12: Tensile force support, 1
3: Hydraulic cylinder, 15: Hole, 16: Projection, 17: Pipe, 20: Joint, 21: Adjustment pin, 22 Double rotation part, 23: Thread part.

Claims (5)

[Claims] (1) In a method in which a sash frame fixed to a window opening of a building is peeled off using a pulling device consisting of a hydraulic cylinder or the like, holes are made in both other frames perpendicular to the frame to be removed, and a rotating A tensile force support whose length can be freely adjusted by rotation of the frame body, and which has protrusions at both ends that can be inserted into the holes, is rotated while inserting the protrusions into the holes of both other frames to lengthen it. A method for removing a sash frame, characterized in that the pulling device is attached and operated between the fixed tensile force support and the frame to be removed. (2) When a sash frame fixed to a window opening of a building is torn off using a pulling device consisting of a hydraulic cylinder or the like, the pulling device is connected between the frame to be removed and the frame is removed. In the tensile force support device that supports the tensile force of the pulling device when removing the frame, protrusions are formed at both ends to be inserted into holes formed in both other frames perpendicular to the frame to be removed, and the rotation A tensile force support device characterized in that it is provided with a rotating body whose entire length can be expanded and contracted. (3) The tensile force support device according to claim 2, wherein the tensile force support device is formed by forming a threaded portion on at least one end of the pipe, and screwing the rotating body provided with the protrusion into the end portion of the threaded portion. (4) A tensile force support is formed by screwing the rotating body provided with the protrusions on both ends of a pipe, as claimed in claim 3.
Tensile force support as described in section. (5) The other ends of the pipes having the protrusions at their tips are screwed into the threaded parts on both sides of the rotating body, in which threaded parts with different threading directions are formed on both sides of the central part, respectively, to provide a tensile force support. A tensile force support according to claim 2 formed therein.