JPH0120458Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a device for pulling out particularly small window frames from among aged window frames installed in openings of buildings.

[Technical background of the invention] In recent years, with the remarkable progress in the performance and quality of aluminum sashes, the demand for replacing existing wooden window frames, steel sashes, and poor-performance aluminum sashes with the latest high-performance, high-quality aluminum sashes has increased. are doing.

By the way, there are two ways to renovate conventional windows: the so-called scraping method, in which the area around the window frame is shaved from the inside and outside, and the so-called covering method, in which the existing window frame is left as is and aluminum sash is fitted inside. .

However, the scraping method had drawbacks such as noise and dust during construction, a longer construction period, and increased costs for interior and exterior repairs. On the other hand, the overlay method eliminates the drawbacks of the scraping method, eliminates noise problems, and is a simple method that does not require interior or exterior repairs.
In order to cover the old window frame with a new aluminum sash,
The disadvantage was that corrosion progressed inside the old frame, impairing its durability. Furthermore, if the existing window frame is made of iron, electrical contact tends to occur between the iron and aluminum, which may cause corrosion of the aluminum.

By the way, in contrast to the above two conventional construction methods, a third construction method, the so-called pull-out construction method, has recently been put into practical use and is attracting attention. The pulling method involves removing the existing window frame using a pulling device and installing a new window frame in the opening.The old window frame can be easily removed without damaging the interior or exterior, and the new window frame can be easily removed without damaging the interior or exterior. Because the frame is attached, there is no problem with corrosion and it is highly durable, so it has received high praise as a method for renovating windows.

The pulling device used in the above-mentioned pulling method is composed of a chain portion having a hook portion attached to the distal end and a base end interlocking with a chain block or other driving portion, and a supporting means having a pole. This support means has a chain fixing bracket, which is also height adjustable, attached to a single pole whose height is adjustable with bolts or the like. The extraction of a window frame by the conventional extraction device having such a configuration is performed as follows. First, the heights of the pole and bracket are adjusted with bolts, and they are fixed vertically in alignment with the window frame, and the chain section is hooked onto the chain section fixing bracket. Next, the hook section at the tip of the chain section is fixed to the window frame, and the base end is linked to the drive section, thereby pulling the chain section and pulling the window frame.

[Problems in the Background Art] However, with the conventional window frame pulling device as described above, each of the upper, lower, left, and right frames that make up the window frame must be pulled out one by one, which is a cumbersome task. Moreover, since the appropriate installation position of the extraction device for each frame differs, it is necessary to change the arrangement of the device each time. Therefore, especially when pulling out a large number of small window frames, the pulling operation itself is easy, but changing the layout of the equipment requires a lot of effort, which significantly reduces work efficiency, which poses a problem. Ta.

[Purpose of the invention] The present invention was made in view of the drawbacks of the conventional window frame extraction device as described above, and its purpose is to improve the installation of the device, especially when pulling out small window frames. To provide a window frame pulling device which eliminates wasteful labor and improves work efficiency.

[Summary of the invention] The window frame pulling device of the present invention is provided with a hydraulic cylinder at the base end of the main body, four wire ropes are attached to the piston head of the hydraulic cylinder, and a hydraulic cylinder is attached to the tip of the main body. Four pulleys are arranged around the shaft to form a cross shape perpendicular to the same axis, and by hooking a wire rope to each of these pulleys and pulling out the ends in four directions of the main body, hydraulic pressure is generated. The operating force of the cylinder is converted into traction forces in four directions perpendicular to the axis of the hydraulic cylinder, allowing the upper, lower, left and right sides of the window frame to be pulled out simultaneously.

[Embodiment of the invention] An embodiment of the window frame extracting device of the invention as described above will be specifically described with reference to FIGS. 1 and 2.

In FIG. 1, a cylindrical hydraulic cylinder 2 is coaxially provided at the base end of a rectangular prism-shaped main body 1. As shown in FIG. Then, the piston head 3 of the hydraulic cylinder 2
A ring portion 5a is attached to the tip via the mounting bracket 4.
Four wire ropes 5 are attached. On the other hand, at the tip of the main body 1, four pulleys 6 are arranged on a plane perpendicular to the axis so as to form a cross shape around the shaft 6a, and a wire rope 5 is hung on each of the pulleys 6. , its tips are drawn out in all four directions of the main body.

The operation of the window frame extracting device of the present invention having the above-mentioned configuration is as follows.

That is, when using the window frame pulling device of this embodiment, as shown in FIG. A connecting fitting 8 such as a hook is attached to the center of each frame 7, and the opening/closing ring portion 8a of the connecting fitting 8 and the tip ring 5 of the wire rope 5 are connected to each other.
Connect a.

After the installation is complete, if you operate the hydraulic cylinder 2,
The power of the hydraulic cylinder 2 is equally converted to each wire rope 5 via each pulley 6, and each wire rope 5 directs the center of each window frame 7 toward the center of the window via the connecting fitting 8. Pull simultaneously and with equal force. As a result, the center portion of each window frame 7 is gradually bent and protruded inwardly, and as a result, each window frame 7 is gradually pulled out from the center toward the corner. Therefore, by simply installing the window frame pulling device once, you can pull out the top, bottom, left and right window frames at the same time, so you can pull out each window frame one by one or change the installation position of the device for each window frame. work can be omitted. Particularly in the work of pulling out small window frames with low mounting strength, the work efficiency can be greatly improved because the pulling out itself is easy.

In this embodiment, the connection fitting 8 to the window frame is hook-shaped, but the connection fitting is not limited to this, and it is also possible to attach it to the window frame by means of clamping, welding, or the like.

[Effects of the invention] As described above, according to the window frame extraction device of the invention, four wire ropes are attached to the piston head of the hydraulic cylinder provided at the base end of the main body, and the wire ropes are By pulling out the tip in all four directions of the main body, the top, bottom, left and right frames of the window can be pulled out at the same time, eliminating wasted work and greatly improving work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the window frame extraction device of the present invention, and FIG. 2 is a perspective view showing an example of its use. DESCRIPTION OF SYMBOLS 1...Body, 2...Hydraulic cylinder, 3...Piston head, 4...Mounting bracket, 5...Wire rope, 5a...Ring section, 6...Pulley, 7...
Window frame, 8... Connection fitting, 8a... Opening/closing ring part.

Claims (1)

[Scope of utility model registration request] A hydraulic cylinder is provided at the base end of the hollow body, four wire ropes are attached to the piston head of this hydraulic cylinder, and a shaft extension of the hydraulic cylinder that reciprocates within the body is attached to the tip of the body. Four pulleys are arranged around the body in a cross shape perpendicular to the coax, each of the wire ropes is hooked to each pulley, and the tips are pulled out in four directions around the main body. Features: Window frame pulling device.