JPH022868Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention is used for a window frame removal device for removing an old window frame when renovating a window, and relates to a holding device for holding the window frame to be removed.

BACKGROUND OF THE INVENTION To retrofit an old window frame in an existing building, the old window frame must be removed from the wall opening for the window in the building. Traditionally, when removing an old window frame, the concrete around the opening in the wall had to be broken. If the wall is destroyed in this way, the work is large-scale and takes a long time, and residents are caused great inconvenience by the noise and garbage generated.

The present applicant proposes a window frame removal device that does not have such drawbacks and is capable of removing an old window frame without destroying the area around the wall opening.

Purpose of the Invention The object of the present invention is to provide a window frame holding device for use in such a window frame removal device for holding a window frame to be removed.

Another object is to provide a clamping device that securely clamps a window frame and makes it easy to remove the window frame.

Summary of the invention The invention consists of a head that is inserted into a window frame, and an upper end that is provided facing both ends of the head from outside the window frame so that the upper end is pressed against the head when it rotates. A rotary arm formed to be rotatable around a single shaft, and a rotating means for rotating the rotary arm and pressing its upper end against the head to sandwich the window frame between the head and the tip of the rotary arm. It is characterized by having the following.

Configuration of the Embodiment Since the clamping device of the present invention is used in the window frame removing device shown in FIG. 1, this device will first be briefly described. 1, 2, and 3 are old window frames to be removed; 1 is the upper frame, 2 is the lower frame, and 3 is the vertical frame.

A fixture 4 and a fixture 5 are attached to the lower frame 2, and a chain 6 is hung between them. Fixture 4
may be of any configuration as long as one end of the chain 6 can be fixed to the lower frame 2. Fixing device 5
The other end of the chain 6 is similarly fixed to the lower frame 2, but in order to adjust the length of the chain 6, a length adjustment device such as a ratchet gear that rotates only in one direction is installed inside. attached.
By pulling the end 6a of the chain 6, the length of the chain 6 can be adjusted using a ratchet gear.

One end of the hydraulic cylinder 7 is attached between the fixture 4 and the fixing device 5 of the chain 6 via the auxiliary member 8, and the other end of the hydraulic cylinder 7 is connected to the clamping device 9 attached to the upper frame 1. 10, it is attached via an auxiliary member 11. Auxiliary member 11
The tip 10a of the chain 10 is suspended downward by two gears 11a and 11b, and by pulling it, the hydraulic cylinder 7 is raised and set to the state shown in the figure. . One of these two gears 11a, 11b is a ratchet gear and is designed so that it cannot rotate in the opposite direction.
When the hydraulic cylinder 7 is set and operated as described above, the clamping device 9 is pulled through the chain 10, and the upper frame 1 is pulled out and removed from the wall opening.
Since the clamping device 9 is attached to the center of the upper frame 1, the center comes out first, and then both ends come out. At that time, a part of the tip of the vertical frame 3 will be pulled out, so remove the clamping device 9 from the upper frame 1 and attach it to the removed part of one vertical frame 3.
Operate the hydraulic cylinder 7, remove the vertical frame 3,
Next, do the same thing to the other vertical frame 3 and remove it. Since the lower frame 2 has almost no part that bites into the wall, it can be removed with a simple tool without using such a device.

This embodiment relates to the clamping device 9 of the device as described above, and the illustrated embodiment will be described below. As shown in the figure, the upper frame 1 has a substantially inverted U-shaped cross section, is open at the bottom, and has both sides 1a and 1b.
The tip is bent as shown. wall 12
The opening includes the entire bottom part of the upper frame 1 and the side parts 1a, 1.
A considerable portion of b is embedded.

The clamping device 9 of this embodiment mainly consists of a head 13, a main column 14, rotating arms 15, 16, auxiliary rods 17, 18, and a small hydraulic cylinder 19.

The head 13 is a rectangular plate-shaped body, and its short side is smaller than the opening width of both sides 1a and 1b of the upper frame 1.
It can be inserted inside from here, and the long side is larger than the opening width. Head 13 of this plate-shaped body
A main pillar 14 is rotatably attached to the center of the main column 14, and the chain 10 is attached to the tip of the main column 14. The rotating arm 15 has a cross-sectional shape that includes an upper end 15a along the side surface 1a in the attached state, and a lower end 15b located at the lower part on the opposite side of the upper end 15a.
and an intermediate portion 15c provided diagonally to connect the upper end portion 15a and the lower end portion 15b. The rotary arms 16 are also shaped symmetrically with the rotary arms 15, and are attached to intersect with each other at their intermediate parts.
It is attached so as to rotate around a shaft 20 passing through the center of the intersection. As shown in FIG. 3, the rotary arm 15 is formed of a plate having an appropriate width into the shape described above, and has a hole 15d for allowing the rotary arm 16 to intersect with the intermediate portion 15c.
The rotary arm 16 is similarly formed of a plate, but has a width from a predetermined location of the intermediate portion 16c to the lower end portion 16b so as to pass through the hole 15d.

Furthermore, the auxiliary rod 17 is connected to the upper end 15a of the rotating arm 15.
and the main column 14, and an auxiliary rod 18 is attached between the upper end 16a of the rotating arm 16 and the main column 14 so that any attachment point can rotate. The support column 14 is provided with a rotation shaft 21, and the two auxiliary rods 17, 18 are attached to the main column 14 on this rotation shaft 21. At that time, the rotation axis 21
When installed on the upper frame, the tips of the auxiliary rods attached to the auxiliary rods should be below the attachment position to each rotating arm, that is, both auxiliary rods 17 and 18 should be tilted with their tips downward. is attached to. Two of these auxiliary rods 17, 18 are attached to each side of the rotating arms 15, 16, as shown in FIG.

A hydraulic cylinder 19 serving as a rotation means for rotating both rotating arms 15 and 16 around the shaft 20 is installed between the lower ends 15b and 16b of the rotating arms 15 and 16 so as to draw them together when operated. There is. Instead of the hydraulic cylinder 19, the rotary arms 15 and 16 may be rotated by bolts 22 and nuts 23, as shown in FIG.

Effects of the Embodiment When using this embodiment, first rotate the head 13 so that it fits into the upper frame 1, put it inside the upper frame 1, rotate it 90 degrees, and then turn it into the upper frame 1 as shown in the third figure. , so that it does not come off the top frame 1. Rotating arms 15, 16
The upper end portions 15a, 16a are the both side portions 1a of the upper frame 1,
They are located on the outside of 1b and are opposed to the ends of the head 13, respectively. If the hydraulic cylinder 19 is operated as it is, the attachment points of the auxiliary rods 17 and 18 can be rotated as described above, and the attachment points to the main column 14, that is, the tips thereof, are inclined downward, so as shown in FIG. As shown in FIG.
16a rotates so as to be pressed against the end of the head 13. Since the side portions 1a and 1b of the upper frame 1 are located between the upper end portions 15a and 16a and the end of the head 13, the rotation of the rotary arms 15 and 16 moves them toward the head 13. 4, and both are separated from the wall 12 and bent, as shown in FIG.

When the hydraulic cylinder 7 shown in FIG. 1 is then operated, the chain 10 is strongly pulled and the main column 14 is pulled. This pulling direction acts in a direction to rotate both rotating arms 15, 16 more strongly via the auxiliary rods 17, 18, so both sides 1a, 1b of the upper frame 1 are strongly clamped. Therefore, the upper frame 1 can be pulled out from the wall 12 by the operation of the hydraulic cylinder 7. At this time, both sides 1a and 1b of the upper frame 1 are partially separated from the wall 12, so that it can be pulled out more easily.

As described above, the upper frame 1 is removed by the operation of the hydraulic cylinder 7. At this time, the part to which the clamping device 9 is attached is removed first, so the upper frame is bent around this part and both ends thereof are also removed. At this time, the upper ends of the vertical frames 3, 3 also come off. Thereafter, the clamping device 9 is removed from the upper frame, attached to the upper end of one of the vertical frames 3, the vertical frame 3 is similarly removed using the hydraulic cylinder 7, and the other vertical frame is also removed in the same manner.

FIG. 5 shows a bolt 2 in place of the hydraulic cylinder 19.
2. This is an example using a nut 23. By turning the nut 23, the rotating arms 15 and 16 are rotated to clamp the sides 1a and 1b of the upper frame 1.Other operations are as described above. Exactly the same as the example.

Effects of the invention As described above, in the present invention, since both sides of the frame are held between the head and the rotating arm, there is no risk of the frame coming off when removing the frame, and the frame can be securely held until the work is completed. You can keep it.

Furthermore, since the rotary arms rotate to clamp the sides of the frame so as to press against the head, the sides can be bent and peeled off from the wall, making it easy to remove the frame.

[Brief explanation of the drawing]

FIG. 1 is a front view of a window frame removal device using the present invention attached to a window frame, FIG. 2 is a front view of an embodiment of the present invention, and FIG. 3 is a cross-sectional view of FIG.
FIG. 4 is a diagram of the operating state of FIG. 2, and FIG. 5 is a front view showing the rotating means of another embodiment. 1... Upper frame, 9... Clamping device, 13... Head,
15, 16... Rotating arm, 19... Hydraulic cylinder.

Claims (1)

[Scope of utility model registration request] A head that is inserted into the window frame, and an upper end that is provided opposite the end of the head from outside the window frame, and that are pivoted to each other such that the upper end moves toward the head when rotated. 1. A window frame holding device comprising: a rotating arm formed to be rotatable; and rotating means attached to the rotating arm for rotating the rotating arm and pressing its upper end against the end of the head.