JPH021959B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a window frame removal method 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 attach a new window frame to the existing window frame without removing it.

Conventionally, in order to remove an old window frame, it was necessary to destroy the area around the opening in the wall of a building using chisels or the like, so the former method required large-scale work and a long period of time. In other words, a great deal of effort and time was expended.

The latter method was discovered to eliminate this drawback. 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. Instead, it is fixed to the old window frame in several places using small pieces of mounting members, so 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.

(Problems to be Solved by the Invention) The present invention has been made in view of the current situation, and an object of the present invention is to provide a method for easily removing an old window frame from an opening in a wall of a building. This is a challenge.

(Means for Solving the Problems) The present invention provides a method for installing a pulling device between a chain or a wire whose ends are fixed near the center of an upper frame and both end corners of a lower frame, and then The upper frame is peeled off from the wall opening by operating the upper frame.

In still another invention, after the upper frame is removed by the above method, one end of the pulling device is removed from the center of the upper frame, and it is attached to the upper end of one of the vertical frames connected to both sides of the upper frame. The feature is that the vertical frame is attached and then peeled off, and then the other vertical frame is peeled off in the same manner.

(Example) An example of an apparatus for implementing the present invention will be explained with reference to FIGS. 1 to 4. The figure shows how to remove an old window frame consisting of an upper frame 1, a lower frame 2 and vertical frames 3, 3 from a wall opening of a building.

A fixing device 4 is attached to one end of the lower frame 2, and a fixing member 5, which integrally incorporates the fixing device and a length adjustment device, is attached to the other end.

The fixture 4 is attached to a rising portion 2a of the lower frame 2 or a horizontal portion 2 formed at its tip as shown in FIG.
Any type of material that can be fixedly attached to b may be used. As shown in the figure, the simplest configuration is to provide arm parts 4a and 4b that sandwich the horizontal part 2b, and to drive a wedge 4c between the horizontal part 2b and one arm part 4a. It is sufficient to simply make a hole in an L-shaped plate-like body as shown in FIG. 4, and also make a hole in the lower frame 2 and attach it with bolts and nuts. Note that this fixture 4 is formed so that an end portion of a chain 6, which will be described later, can be attached thereto.

The fixing member 5 has a ratchet gear 5a attached to the aforementioned fixture 4, and the other end of the chain 6 is attached to the ratchet gear 5a. Naturally, a pawl is attached to the ratchet gear 5a, so that it rotates only in a fixed direction (the way it rotates when the end 6a of the chain 6 is pulled in the illustrated state).
The length of the chain 6 is adjusted by this ratchet gear 5a. Needless to say, if there is no need to adjust the length of the chain 6, the fixture 4 may be used instead of the fixing member.

An auxiliary member 8 is attached to the chain 6 to attach one end of a hydraulic cylinder 7 as a pulling device. As shown in the figure, the auxiliary member 8 has two ratchet gears 8a and 8b, each of which is adapted to rotate only in one direction, and the chain 6 is passed from one gear 8a to the other 8b to the fixed member 5. This allows the auxiliary member 8 to be fixed at any position on the chain 6. This auxiliary member 8 does not necessarily have to be used.

On the other hand, a holding member 9 is attached to the upper frame 1,
One end of a chain 10 that connects the holding member and one end of the hydraulic cylinder 7 is attached to the holding member 9 . The chain 10 is not directly connected to the hydraulic cylinder 7, but is connected via an auxiliary member 11 similar to the auxiliary member 8. As with the auxiliary member 8, this auxiliary member 11 is equipped with a ratchet gear 11a and a gear 11b which are rotatable only in one direction. The chain 10 is the gear 11a, 1
1b, with its tip 10a extending outside. The ratchet gear 11a rotates when the tip 10a of the chain 10 is pulled down in the illustrated state, but does not rotate in the opposite direction.
The reason why the auxiliary member 11 is provided with two gears is that when in use, the tip 10 of the chain 10
This is to make it easier to work by hanging down. One end of the hydraulic cylinder 7 may be directly connected to the holding member 9 without using such a chain 10 and auxiliary member 11.

The holding member 9 may be of any type as long as it is attached to the upper frame 1 and does not come off when it is pulled by the hydraulic cylinder 7. It may also be simply a welded metal plate with holes.

A method for removing the frame using the apparatus shown in FIG. 1 will be described below.

First, fixing tools 4 and fixing members 5 are attached to both ends of the lower frame 2.
is attached, one end of the chain 6 is fixed to the fixture 4, and the other end is guided to the fixing member 5 through the auxiliary member 8. Since the fixed member 5 is provided with a ratchet gear 5a, the length of the chain 6 between the fixture 4 and the fixed member 5 is adjusted by hooking the tip 6a of the chain 6 on the ratchet gear 5a and pulling it.

One end of the hydraulic cylinder 7 is attached to the auxiliary member 8 and left as it is below.

Next, the holding member 9 is attached to the upper frame 1, one end of the chain 10 is attached to this, and the auxiliary member 11 is attached to the chain 10.

Then, the hydraulic cylinder 7 is pulled up and the other end is fixed to the auxiliary member 11. Adjust the chains 6, 10 by pulling their tips 6a, 10a so that they do not loosen.

After that, the hydraulic cylinder 7 is operated. This hydraulic cylinder pulls the upper frame 1 via the auxiliary member 11, the chain 10, and the holding member 9. 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 if you pull strongly with the hydraulic cylinder 7, the welds will break. The upper frame 1 is peeled off from the wall opening. After that, when pulled further, the vertical frame 3 connected to both ends of the upper frame 1,
The upper end of 3 is also torn off.

Thereafter, the holding member 9 is attached to the part of the vertical frame 3 that has peeled off from the wall, and when the hydraulic cylinder 7 is operated, the vertical frame 3 is peeled off and pulled together. Do the same for the other vertical frame 3. Remove the vertical frame 3 from the wall opening.

Peel off the lower frame 2 from the wall opening in the same way. However, unlike the upper frame 1 and the vertical frame 3, the lower frame 2 has almost no parts that dig into the wall, so it can be removed with a simple tool without using such a device.

In the above, the hydraulic cylinder 7 is connected to the chain 6.
The hydraulic cylinder 7 is attached to the auxiliary member 8 attached to the upper frame 1 and later attached to the auxiliary member 11 on the upper frame 1 side, but this order can be changed arbitrarily. You can then attach the other end to the chain.

[Effects of the Invention] As described above, according to the method of the present invention, a pulling device such as a hydraulic cylinder is connected between the chain or wire whose both ends are fixed near the corners of both ends of the lower frame and the center of the upper frame. I installed it and got it working,
The force applied to the bottom frame is dispersed and is applied near both ends connected to the vertical frame, so the top frame can be reliably and easily peeled off without the bottom frame peeling off easily. be able to.

Further, according to the second invention, after the upper frame is peeled off, the pulling device is replaced at the tip of the vertical frame and operated, so that the vertical frame can also be reliably and easily peeled off by the pulling device. can.

[Brief explanation of drawings]

1 is a front view showing an example of an apparatus for carrying out the present invention, FIG. 2 is a side view of the fixing device shown in FIG. 1, FIG. 3 is a side view of the fixing member shown in FIG. 1, and FIG. The diagram is
FIG. 6 is a side view of another fixture. 1: Upper frame, 2: Lower frame, 3: Vertical frame, 4: Fixture,
5: Fixed member, 6, 10: Chain, 7: Hydraulic cylinder, 9: Holding member.

Claims (1)

[Claims] 1. In a window frame removal method in which a window frame consisting of four frames, an upper frame, a lower frame, and left and right vertical frames attached to an opening in a wall of a building is removed from an opening, Installing a pulling device between the center of the frame and a chain or wire whose ends are fixed near the corners of both ends of the lower frame, and then operating the pulling device to peel off the upper frame from the wall opening. A window frame removal method featuring: 2. In the window frame removal method in which a window frame consisting of four frames, the upper frame, the lower frame, and the left and right vertical frames attached to an opening in the wall of a building is removed from the opening, the central and lower parts of the upper frame are removed. A pulling device is installed near both end corners of the frame between the chain or wire whose ends are fixed, and then the pulling device is operated to first peel off the upper frame from the wall opening, and then remove the upper frame. A window characterized in that the pulling device is removed from the center, attached to the upper end of one vertical frame connected to both sides of the upper frame, and then peeled off, and then the other vertical frame is peeled off in the same manner. How to remove the frame.