JPH0125870B2 - - Google Patents

Description

TECHNICAL FIELD The present invention relates to a window frame removal method and apparatus for removing an old window during window renovation.

Prior Art There are two methods for renovating old window frames in existing buildings. One is to remove the existing window frame and install a new window frame, and the other is to install a new window frame without removing the existing window frame. Previously, in order to remove an old window frame, the area around the opening in the wall of the building had to be destroyed, which required extensive work, a long period of time, and a great deal of effort and time. . The latter method was invented to eliminate these drawbacks. However, with this method of attaching a new window frame to an old window frame, the old window frame is already old and corroded, and the entire outer periphery of the window frame is not held and fixed in the wall opening. Since it is fixed to the old window frame in several places using small pieces of mounting members, it cannot necessarily be said that the strength is sufficient. Also, of course, the new window frame will be inside the old window frame, so the window will have to be a little smaller than the old window.

Therefore, if the old window frame can be easily removed, it is desirable to remove it and install a new window frame in the wall opening.

OBJECTS OF THE INVENTION The present invention has been made in view of the current situation, and it is an object of the present invention to provide a method and apparatus for easily removing an old window frame from an opening in a wall of a building.

SUMMARY OF THE INVENTION The present invention provides a method for attaching a jig to a window frame that is attached to an opening in a wall of a building and is made up of four frames: an old upper and lower horizontal frame and a left and right vertical frame that should be removed. Attach it with a chain or wire from near the four corners of the window frame so that it is located within the space, install a pulling device between the center of one frame body and the jig, and then operate the pulling device. The present invention is characterized in that the frame body with the pulling device attached to the central portion is peeled off from the wall opening.

Another invention is to attach a jig to an old window frame that is attached to an opening in a wall of a building and which is made up of four frames, upper and lower horizontal frames and left and right vertical frames, which are to be removed. Attach it with a chain or wire from near the four corners of the window frame so that it is located at Peel off the frame with the pulling device attached to the center part from the wall opening, then remove the pulling device from the frame, leave the jig as it is, attach the pulling device to another frame, and then remove it from the wall opening. The frame is peeled off using a pulling device, the pulling devices are attached to the frame to be removed in the following order, and each frame is sequentially peeled off from the wall opening to remove the whole. .

Still another invention includes a jig that is attached by a chain or wire from the four corners of the window frame to be removed into a space surrounded by the window frame, and one end is attached to this jig and the other end is attached to the frame body that is to be removed. This is a window frame removal device characterized in that it has a pulling device.

Embodiment FIGS. 1 and 2 relate to an embodiment of a jig 1 used in the apparatus of the present invention. This jig 1
As shown in FIG. 2, two approximately elliptical plates 2, 2 are arranged at a constant interval, and one first mounting means 3 and two second mounting means 4, 4 are rotated between them. It is freely pivoted. The first mounting means 3 is pivotally supported at the center of the plates 2, 2, and the second mounting means 4, 4 are pivotally supported at both ends of the plates 2, 2, respectively. The first attachment means 3 is made of a substantially elliptical metal plate like the plate 1, is pivotally supported by the plates 2, 2 at the center, and has holes 5, 5 at both ends. The second attachment means 4 is a substantially equilateral triangular metal plate, and is pivotally supported by the plates 2, 2 near one vertex thereof,
It has holes 6, 6 at the other two apex portions. Each hole of the second attachment means 4, 4 has four chains or wires (hereinafter referred to as chains) 7.
One end of one to ten is attached respectively.

As shown in FIG. 3, the window frame to be removed is composed of four frames: an upper frame 11, a lower frame 12, and left and right vertical frames 13, 13. An upper fixture 14 is installed near the upper end of one vertical frame 3, and a lower fixture 15 is installed near the lower end of one vertical frame 3.
is fixed. As shown in FIG. 4, these fixtures 14 and 15 are both made of metal plates having holes, and are fixed to the vertical frame 13 by welding.
As shown in the figure, fasteners 16 for fastening the chains 7 to 10 are hung in the holes of these fixtures 14. In this embodiment, both of the fixtures are fixed to the vertical frames 3, 3, but the upper fixture 1
4 may be fixed to the upper frame 11, and the lower fixture 15 may be fixed to the lower frame 12, respectively. Also in this case, each fixture is naturally fixed to both ends of each frame. When attaching to the upper frame or lower frame, since these cross-sectional shapes have appropriate protrusions, fix the fixture to each frame by sandwiching these protrusions without welding. Can be done.

In this embodiment, the upper frame 11 is first to be peeled off, and the fixing tools 14 and 15 are attached to the upper frame 11.
Similarly, a holder 17 made of metal having holes is fixed, and one end of a hydraulic cylinder 18, which is a pulling device, is attached to this holder. The holder 17 is the fifth
As shown in the figure, the protrusions 11a of the upper frame 11 are clamped and fixed by bolts 17a, but it goes without saying that they may be fixed by welding.

The jig 1 with one end of the chains 7 to 10 attached to the holes 6, 6... of the second attachment means 4, 4, respectively, must first be attached to the window frame.
8 and place the upper fixing tools 14, 14 at an appropriate location.
Fix it to the stopper 16 and hang the jig 1. The height of the jig 1 from the upper frame 11 and the left and right positions can be adjusted by the position at which each chain is fastened to the stopper 16. Adjust it so that it is directly below the hydraulic cylinder 18, as shown in FIG. Although it depends on the length of the hydraulic cylinder 18, it is desirable that the jig 1 be positioned approximately at the center of the space surrounded by the window frame. Thereafter, the other end of the hydraulic cylinder 18 is attached to the upper hole 5 of the first attachment means 3 of the jig 1. The chains 9 and 10 attached to the lower side of the jig 1 suspended by the hydraulic cylinder 18 are connected to the lower fixtures 15 and 1.
Attach it to the stopper 16 in No. 5 while adjusting the length. By attaching the chains 9 and 10, the setup of the apparatus of this embodiment is completed, and the state shown in FIG. 6 is reached. When the hydraulic cylinder 18 is operated in this state, the jig 1 is pulled up, but the chain 9,
10, the upper frame 11 is strongly pulled. The frame is fixed by welding anchors at several points to the reinforcing bars that protrude from the wall opening or to the embedded plates that are welded to the reinforcing bars that do not protrude, so when it is pulled strongly with the hydraulic cylinder 18, The welds or the reinforcing bars themselves are cut and the upper frame 1 is separated from the wall opening. After that, if the operation of the hydraulic cylinder 18 is continued and pulled,
As shown in FIG. 7, since the ends of the vertical frames 13, 13 are connected to the upper frame 11, they are dragged, and those parts are also successively torn off. A holder 17 similar to that described above is fixed to the lower frame in advance, and after peeling off the upper frame from the wall opening as described above, the hydraulic cylinder 18 is connected to the hole 5 on the lower side of the jig 1 and the lower frame. 12
and the holder 17 of the hydraulic cylinder 1.
8, the lower frame 12 can be peeled off in the same manner.

Next, if the old frame does not have sufficient strength due to corrosion or the like, it may break as shown in FIG. 8 when the upper frame 11 and the lower frame 12 are peeled off. Even in such a case, as shown in the figure, the chains 8 and 10 are removed from the stopper 16, and the hydraulic cylinder 18 is attached to the stopper 16 of the upper fixture 14 from which the chains have been removed.
When the vertical frame 13 is attached and operated, the portion of the vertical frame 13 to which the upper fixture 14 is fixed is peeled off from the wall opening. After that, similarly, the hydraulic cylinder 18
can be attached to the lower fixture 15 and the vertical frame 13 can be peeled off. It goes without saying that this method of peeling off the vertical frame can be used even if the upper and lower frames are not broken. In this way, each frame can be peeled off and the entire window frame removed from the wall opening.

Effects of the Invention As explained in detail above, according to the method of the present invention, a jig attached to the center of the window frame by a chain or wire from near the four corners of the window frame and the frame to be removed can be pulled. Since the pulling device is attached and operated, a force is applied to the frame to be removed perpendicularly to the pulling direction, and the frame can be easily pulled off.

In addition, as mentioned above, the wire or chain that is subject to the load is fixed to the frame that should be removed, so no extra load is applied to the wall opening, and the window frame can be fixed without unnecessary damage to the wall opening. can be removed.

Furthermore, since the jig is held by four chains or wires, even if one of them comes off during work, or if the frame breaks, the pulling device, jig, etc. will not fly away. It is safe.

Furthermore, since the jig can be suspended with a chain or wire at the beginning of the work, there is no need to adjust the length of the chain or wire while holding heavy objects. All window frames can be removed by simply replacing the pulling device such as a hydraulic cylinder.
The whole task becomes extremely easy.

[Brief explanation of drawings]

FIG. 1 is a front view of one embodiment of the jig used in the present invention, FIG. 2 is a side view of the jig, and FIG. 3 is a front view of the device according to the present invention being installed on a window frame. Figure 4 is a perspective view of the vertical frame in the part where the upper fixture is fixed, Figure 5 is a sectional view of the upper frame with the holder attached to it to be removed, and Figure 6 is an embodiment of the present invention. Front view of the device attached to the window frame, No. 7
Figure 8 is a front view of the window frame in the middle of work. 1: jig, 2: plate material, 3: first mounting means, 4:
Second mounting means, 11: upper frame, 12: lower frame, 13:
Vertical frame, 14: Upper fixture, 15: Lower fixture.

Claims (1)

[Claims] 1. In a window frame removal method for removing a window frame consisting of four frames, upper and lower horizontal frames and left and right vertical frames attached to a wall opening of a building, from the opening, a jig is used. Attach the window frame with a chain or wire from near the four corners so that it is located in the space surrounded by the window frame, attach a pulling device between the center of one frame body and the jig, and then A method for removing a window frame, comprising operating a pulling device and peeling off the frame with the pulling device attached to the center portion from a wall opening. 2. The jigs are arranged in parallel at intervals.
a first mounting means for attaching the pulling device that is pivotally supported in the center between two plate materials;
2. The method for removing a window frame according to claim 1, further comprising second attachment means for attaching the chain or wire pivotally supported to both ends between the plate members. 3. In the window frame removal method in which a window frame consisting of four frames, the upper and lower horizontal frames and the left and right vertical frames attached to an opening in the wall of a building is removed from the opening, the jig is not surrounded by the window frame. Attach the window frame with a chain or wire from near the four corners so that the window frame is located in the space where the Then, the frame body with the pulling device attached to the center part is peeled off from the opening in the wall, and then,
Remove the pulling device from the frame, attach the pulling device to another frame with the jig intact, peel off that frame using the pulling device, and then attach the pulling device to the frame from which it should be removed in the following order. A method for removing a window frame, which comprises attaching and removing each frame body by sequentially peeling it off from a wall opening. 4 Fix fixtures above and below both vertical frames, attach the other end of a chain or wire with one end attached to the jig to each fixture, and install the said jig in the space surrounded by the window frame. Claim 3
How to remove the window frame described in section. 5 Attach one end of the pulling device to the upper frame and tear off the upper frame, then attach one end of the pulling device to the lower frame and tear off the lower frame, and then attach it to any of the four fixing devices mentioned above. Remove the chain or wire that is attached, attach one end of the pulling device to it, peel off the area near the fixing device of the frame to which the fixing device is fixed, and then similarly remove the area near the fixing device to which the other fixing device is attached. The method for removing a window frame according to claim 4, wherein the window frame is removed sequentially from the wall opening. 6 The jigs are arranged parallel to each other at intervals.
a first mounting means for attaching a plurality of plate materials and the pulling device pivotally supported at a central portion between the two plate materials;
The method for removing a window frame according to claim 3, 4 or 5, comprising second attachment means for attaching the chain or wire pivotally supported to both ends between the plate members. 7. A jig that is attached with a chain or wire from the four corners of the window frame to be removed into the space surrounded by the window frame, and one end that is attached to this jig,
A window frame removal device comprising: a pulling device whose other end is attached to a frame body to be removed. 8 The jigs are arranged parallel to each other at intervals.
a first attachment means for attaching the pulling device which is pivotally supported at the center between two approximately elliptical plates, and the chain or wire which is pivotally supported at both ends between the plates. A window frame removal device according to claim 7, comprising a second attachment means.