KR102656619B1 - Slab panel support device - Google Patents

Abstract

The slab panel support device is provided to cross between wall panels facing each other, and is mounted at positions corresponding to both ends of the slab panels along each side of the supporter and both sides of the supporter supporting the lower surface of the slab panels, Includes panel mounting members for mounting the slab panels with upwardly protruding protrusions, each of the panel mounting members being provided on both sides of the support, including mounting portions on which the protrusions are detachably mounted, and the protrusions of the protrusions include: In case of damage, only the damaged protrusion can be replaced.

Description

Slab panel support device {Slab panel support device}

The present invention relates to a slab panel support device, and more specifically, to a slab panel support device for supporting slab panels to form a slab forming the floor and ceiling of a building structure.

Construction of structures using reinforced concrete proceeds in the order of installing temporary materials such as formwork and then pouring concrete.

In particular, the construction of the slabs on each floor of the structure is accomplished by pouring concrete together with the lower wall portion. In the construction of the slab, the wall panels for the wall are installed on the front and rear of the wall, the slab panels are installed horizontally in the area between the wall panels spaced at a certain distance, and then the inside of the wall panel and the slab panel are installed. After pouring and curing the concrete on the upper part, it goes through the process of dismantling temporary materials such as wall panels and slab panels.

The slab panel support device includes a support bar provided to cross between the wall panels, and the support support supports the slab panels. At this time, the support bar is supported by a support.

In order to dismantle the slab panel, the wall panel and the support are first dismantled. As the support is removed, the support primarily descends a certain distance, and accordingly, the slab panel also descends under its own weight.

At this time, the slab panel may suddenly fall and break away from the support. Therefore, when the slab panel collides with the floor, it causes noise at the construction site, and the slab panel is damaged, which not only reduces the recycling rate of the slab panel, but also increases the risk of safety accidents due to the slab panel.

In addition, even if the slab panel does not separate from the support, the risk of a safety accident exists when removing the slab panel located above the worker's head from the support.

The present invention provides a slab panel support device that can safely dismantle slab panels and reduce noise generation at a work site.

The slab panel support device according to the present invention is provided to cross between wall panels facing each other, and includes a support for supporting the lower surface of the slab panels and a position corresponding to both ends of the slab panels along each side of the support. It is mounted on and includes panel mounting members for mounting the slab panels with protrusions protruding upward, and each of the panel mounting members is provided on both sides of the support, and includes a mounting portion on which the protrusions are detachably mounted. , when the protrusion is damaged, only the damaged protrusion can be replaced.

According to one embodiment of the present invention, the mounting part protrudes higher than the upper surface of the support, and the edges of the slab panels supported by the support are caught by the mounting part, thereby aligning the positions of the slab panels.

According to one embodiment of the present invention, adjacent mounting parts located on the same side of the support and supporting different slab panels can be connected to each other to form an integrated structure.

According to one embodiment of the present invention, the protrusion is provided to be detachable from the panel mounting members, and when the protrusion is damaged, only the damaged protrusion can be replaced.

According to one embodiment of the present invention, the mounting portion has the same height as the upper surface of the support, and each of the panel mounting members is provided on the upper surface of the support to cross the support, and connects the protrusions to each other. It may further include a fixing part for fixing.

According to one embodiment of the present invention, adjacent mounting parts located on the same side of the support and supporting different slab panels can be connected to each other to form an integrated structure.

According to one embodiment of the present invention, the protrusion may hold the outermost pinholes located on the outermost side among the pinholes formed along the edge of the slab panel during the installation or disassembly of the slab panel. One of the present invention According to embodiments, the size of the outermost pinholes may be made larger than the size of the remaining pinholes so that the protrusion can easily mount the slab panel.

According to one embodiment of the present invention, the slab panel support device is provided along the tops of the wall panels, and includes holders having openings, each provided inside the holders, and providing support to the outside through the openings. It further includes exposed coupling members and connecting members connecting the coupling members and the support, wherein each of the connecting members has a plurality of first pin coupling holes for pin coupling with the support, and the support has two sides. A pair of second pin coupling holes are provided at each end, and the first pin coupling holes and the second pin coupling holes are pin-coupled to prevent each of the connecting members from rotating with respect to the support.

According to one embodiment of the present invention, the position of the first pin coupling holes and the second pin coupling holes is adjusted so that the panel holding members correspond to both ends of the slab panels between the connecting members. You can adjust the position of the support.

According to one embodiment of the present invention, the spacing between the second pin coupling holes may be the same as the spacing between the first pin coupling holes or may be twice the spacing between the first pin coupling holes.

According to one embodiment of the present invention, each of the connecting members has a third pin engaging hole that is pin-coupled with each of the connecting members, and each of the connecting members has a fourth pin engaging hole that is pin-coupled with the third pin engaging hole. It is provided with a pin coupling hole, and at least one of the third pin coupling hole and the fourth pin coupling hole may have a vertically elongated hole shape to secure a movement space for the support during the installation and disassembly of the support. there is.

The technical effects of the configuration of the present invention are as follows.

First, the panel mounting members can be mounted on both sides of the support using bolts, etc. Therefore, mounting the panel mounting members is easy and simple.

Second, if the protrusions provided on the panel mounting members are damaged or deformed, only the protrusions can be replaced, not the entire panel mounting members. Accordingly, the cost required for maintenance of the panel mounting members can be reduced.

Third, by adjusting the pin coupling positions of the plurality of first pin coupling holes and the second pin coupling holes, the position of the support can be adjusted so that the panel holding members correspond to both ends of the slab panels. Accordingly, it is possible to prevent the panel holding members from being misaligned with the slab panel.

Fourth, by making the size of the pinhole located at the outermost part of the slab panel larger than the size of the remaining pinholes, the protrusion can easily mount the slab panel.

Figure 1 is a schematic side view for explaining a slab panel support device according to an embodiment of the present invention.
FIG. 2 is a side view illustrating a state in which a support is removed from the slab panel support device shown in FIG. 1 and the support bar is lowered a certain distance.
Figure 3 is a side view for explaining a state in which the position of the support in the slab panel support device shown in Figure 1 is adjusted in the horizontal direction.
FIG. 4 is a plan view illustrating a state in which the slab panels shown in FIG. 1 are aligned on supports and panel holding members.
Figure 5 is a cross-sectional view taken along line AA shown in Figure 1.
Figure 6 is a cross-sectional view cut along line BB shown in Figure 1.
FIG. 7 is a cross-sectional view illustrating the state in which the slab panel in FIG. 5 is rotated and mounted on a panel mounting member.
FIGS. 8 and 9 are cross-sectional views for explaining another example of the panel holding members shown in FIG. 1.

Hereinafter, the present invention will be described in detail with reference to the attached drawings. Since the present invention can be subject to various changes and can have various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. While describing each drawing, similar reference numerals are used for similar components. In the attached drawings, the dimensions of the structures are enlarged from the actual size for clarity of the present invention.

Terms such as first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Figure 1 is a schematic side view for explaining a slab panel support device according to an embodiment of the present invention, and Figure 2 illustrates a state in which a support is removed from the slab panel support device shown in Figure 1 and the support is lowered a certain distance. Figure 3 is a side view for explaining the state in which the position of the support in the slab panel support device shown in Figure 1 is adjusted in the horizontal direction, and Figure 4 is a side view showing the slab panels shown in Figure 1 using the support and panel mounting. It is a top view for explaining the state in which the members are aligned, Figure 5 is a cross-sectional view cut along line A-A shown in Figure 1, Figure 6 is a cross-sectional view cut based on line B-B shown in Figure 1, FIG. 7 is a cross-sectional view for explaining a state in which the slab panel is rotated and mounted on a panel mounting member in FIG. 5, and FIGS. 8 and 9 are cross-sectional views for explaining another example of the panel mounting members shown in FIG. 1.

Referring to FIGS. 1 to 7, the slab panel support device 100 is designed to safely and conveniently install and remove the slab panel 20, and includes holders 110, coupling members 120, It may include a support 130, connection members 140, and panel holding members 150a and 150b.

The holders 110 are provided along the tops of the wall panels 10 facing each other. The holders 110 may be in the shape of a hollow square pipe, and an opening 111 may be formed.

The opening 111 may be formed by cutting a portion of the surfaces facing each other along a portion or the entire length of each of the holders 110.

Here, the holders 110 can be installed to protrude a certain distance inward from the wall panels 10 . Accordingly, the width of the slab panel 20 is shorter than the distance between the wall panels 10 facing each other, thereby reducing interference with the wall when the slab panel 20 is lowered.

Alternatively, the holders 110 may not be installed to protrude a certain distance inward from the wall panels 10 .

The holders 110 may be made of metal materials such as aluminum or steel, or may be made of various types of synthetic resins with sufficient strength. Even if the holders 110 collide with the floor when placed on the floor, shock can be appropriately absorbed and impact noise can be minimized to improve the working environment.

The coupling members 120 are provided inside each of the holders 110 and may be exposed to the outside through the opening 111. The coupling members 120 may be arranged to be spaced apart at preset intervals along the longitudinal direction of each of the holders 110 .

The coupling members 120 may be coupled to the inside of the holders 110 .

For example, if the coupling members 120 and the holders 110 are made of synthetic resin, they may be bolted together, and if they are made of metal, they may be bolted or welded.

The support 130 is provided to cross between the wall panels 10 facing each other. Specifically, the support 130 is disposed between the holders 110 facing each other to support the slab panel 20.

The support 130 is formed in the longitudinal direction on the inside and may be provided with a receiving space 131 for accommodating the connecting members 140. That is, the support 130 may have a tube structure including the receiving space 131.

Meanwhile, although not shown, the support 130 may have a general bar or rod structure rather than the tube structure.

On the lower surface of the support 130, a bolt head mounting groove 132 consisting of a narrow entrance and an expanded internal space is formed to be long in the longitudinal direction. The head of a support fixing bolt (not shown) for fixing the support 30 is mounted in the bolt head fixing groove 132, and the threaded part of the support fixing bolt can be coupled in such a way that it protrudes from the lower part of the support 130. there is.

A fixing nut is fastened to the threaded portion of the support fixing bolt to fix the support fixing bolt at a preset position.

The support fixing bolt and the fixing nut protruding from the lower part of the support 130 are received inside the upper part of the support 30, which supports the lower part of the support 130, to prevent movement of the support 30. It performs its function.

The connecting members 140 connect the coupling members 120 and the support 130. At this time, both ends of the support 130 are pin-connected to each of the connecting members 140, one end of each connecting member 140 is coupled to the support 130, and the other end is connected to each of the connecting members ( 120).

Specifically, each of the connecting members 140 has a plurality of first pin coupling holes 141 at one end that are pin-coupled with the support 140. The first pin coupling holes 141 may be spaced apart from each other at a certain distance.

When the spacing between the first pin coupling holes 141 is equal to or smaller than the diameter of the first pin coupling holes 141, the first pin coupling holes 141 are long holes connected to each other as shown in FIG. 1. It may be a shape.

When the spacing between the first pin coupling holes 141 is larger than the diameter of the first pin coupling holes 141, the first pin coupling holes 141 may be arranged to be spaced apart from each other.

The support 130 has a pair of second pin coupling holes 133 at each end of both sides. At this time, the number of first pin coupling holes 141 may be much greater than the number of second pin coupling holes 133.

The support 130 and the connecting members 140 are coupled by pin-coupling the first pin coupling holes 141 and the second pin coupling holes 133 with a pair of first pins (P1). can do. At this time, the diameter of each of the first pins P1 may be substantially the same as the diameter of the first pin coupling holes 141 or the second pin coupling holes 133.

Since they are coupled at two points by the pair of first pins P1, each of the connecting members 140 can be prevented from rotating with respect to the support 130.

When the support 130 has a tube structure, the upper and lower surfaces of both ends of the support 130 are blocked, so that the support 130 is connected to the connection members 140 accommodated in the receiving space 131. interferes with the rotational behavior of In this case, the second pin coupling hole 133 is provided, and even if the pin is coupled with one of the first pins (P1), the connecting members 140 are prevented from rotating with respect to the support 130. You can.

However, in order to stably prevent the connecting members 140 from rotating with respect to the support 130, a pair of second pin coupling holes 133 are provided, and a pair of first pins ( It is preferable to pin it with P1).

Meanwhile, when the support 130 has a general bar structure, the support 130 and the connecting member 140 are pinned together with a pair of first pins P1, so that the connecting members 140 are connected to the connecting member 140. Rotation with respect to the support 130 can be prevented.

The spacing between the second pin coupling holes 133 may be the same as the spacing between the first pin coupling holes 141 or may be twice the spacing between the first pin coupling holes 141.

The support 130 is moved in the horizontal direction by a distance equal to or twice the distance between the first pin coupling holes 141 to connect the support 130 and the connecting members ( 140) can be combined with pins. That is, the position where the first pin coupling holes 141 are pin coupled to the second pin coupling holes 133 can be adjusted. Accordingly, the position of the support 130 between the connecting members 140 can be adjusted.

By adjusting the position of the support 130, the panel mounting members 150a and 150b can be positioned to correspond to both ends of the slab panels 20. Accordingly, it is possible to prevent the panel holding members 150a and 150b from being misaligned with the slab panels 20.

Each of the connecting members 120 has a third pin engaging hole 121 that is pin-connected to each of the connecting members 140. The third pin coupling hole 121 is located at the end of each coupling member 120.

Although not shown in detail, a slot-shaped groove may be formed at the end of each of the connecting members 120 to accommodate the connecting members 140 for pin coupling.

Each of the connecting members 140 has a fourth pin coupling hole 142 at the other end.

The coupling member 120 and the connecting member 140 can be coupled to each other by pin coupling the third pin coupling hole 121 and the fourth pin coupling hole 142 with the second pin P2. At this time, at least one of the third pin coupling hole 121 and the fourth pin coupling hole 142 may be in the shape of a long hole that is elongated vertically. In Figure 1, the third pin coupling hole 121 is shown as a long hole.

The third pin coupling hole 121 and the fourth pin coupling hole 142 serve to lower the support 130 and the connecting members 140 by a certain distance.

Specifically, when the support 30 supporting the support 130 is removed, the support 130 and the connecting members 140 descend by their own weight. At this time, the second pin P2 descends along the third pin coupling hole 121 and the fourth pin coupling hole 142.

The panel holding members 150a and 150b are mounted at positions corresponding to both ends of the slab panels 20 along both sides of the support 130, respectively.

Each of the panel mounting members 150a and 150b may include a mounting portion 151, a protruding portion 152, and a reinforcing portion 153.

The mounting portion 151 has a shape corresponding to the side surface of the support 130, and is mounted on the support 130 by a fastening member such as a bolt. Accordingly, the panel mounting members 150a and 150b including the mounting portion 151 can be easily and simply mounted on the support 130.

The upper surface of the mounting unit 151 protrudes higher than the upper surface of the support 130. Since the mounting part 151 is mounted at a position corresponding to both ends of the slab panels 20, the edges of the slab panels 20 supported on the support 130 are caught by the mounting part 151. Accordingly, the positions of the slab panels 20 can be aligned on the support 130.

The protrusion 152 is provided to protrude upward on the upper surface of the mounting part 151 and holds the slab panels 20.

Specifically, the protrusion 152 is located at the outermost pinhole 22 among the pinholes 21 formed along the edge of each slab panel 20 during the installation or disassembly process of the slab panels 20. ) is mounted. Therefore, the work can be performed conveniently and safely when installing or dismantling the slab panels 20.

The protrusion 152 is provided to be detachable from the mounting part 151. For example, the protrusion 152 is in the form of a bolt that is inserted so that the body penetrates the mounting part 151 and then fixes the body with a nut or clip, or the protrusion 152 is formed so that the body penetrates the mounting part 151. After being inserted, the body can be fixed with a snap ring.

If the protrusion 152 is damaged or deformed, only the damaged or deformed protrusion 152 can be replaced rather than the entire panel mounting members 150a and 150b. Accordingly, the cost required for maintenance of the panel mounting members 150a and 150b can be reduced.

Meanwhile, the size of the outermost pinhole 22 located on the outermost side may be made larger than the size of the remaining pinholes 21 so that the protrusion 152 can easily hold the slab panel 20. For example, the outermost pinhole 22 can be formed as an elongated hole in the horizontal direction.

The reinforcement part 153 is provided on at least one of both left and right ends of the mounting part 151 to be perpendicular to the mounting part 151 and reinforces the mounting part 151. For example, the reinforcement part 153 may be joined to the inner surface of the mounting part 151, which has an approximately 'L' shape, by welding. Therefore, the mounting portion 151 can be prevented from being deformed by the load or impact of the slab panel 20.

Meanwhile, the mounting parts 151 located on the same side with respect to the support 130 and adjacent to each other while holding different slab panels 20 can be connected to each other using the connecting part 154 to form an integrated unit. there is.

That is, first panel mounting members 150a consisting of the mounting portion 151, the protruding portion 152, and the reinforcing portion 153 are disposed at both ends of the support 130, and at the center of the support 130. Second panel mounting members 150b consisting of the mounting portion 151, the protruding portion 152, the reinforcing portion 153, and the connecting portion 154 may be disposed at the portion.

Referring to FIG. 7, when installing the slab panel 20 on the support 130, the slab panel ( After inserting the outermost pinhole 22 of the slab panel 20, safely lift the other side of the slab panel 20, and while appropriately pushing or pulling the slab panel 20, the other side of the slab panel 20 is also supported by the support 130. ) Make sure it is seated at the top. At this time, the panel mounting members 150a and 150b, the edges of the slab panel 20 protruding from the upper surface of the support 130, are caught on the mounting portion 152, so that the slab panel 20 is attached to the support 130. can be sorted on top.

When the slab panel 20 is dismantled from the upper part of the support 130, the slab panel 20 is rotated and the uppermost part of the slab panel 20 is attached to the protrusion 151 of the panel holding members 150a and 150b. The outer pinhole 22 is inserted. Accordingly, since the slab panel 20 is suspended from the panel holding members 150a and 150b, the slab panel 20 can be dismantled conveniently and safely.

Disassembly of the slab panel 20 can be done after removing the support 30 and lowering the support 130 a certain distance to provide space for the slab panel 20 to rotate.

Referring to FIGS. 8 and 9 , each of the panel mounting members 150a and 150b may include a mounting portion 151, a protruding portion 152, a reinforcing portion 153, and a fixing portion 155.

Except that the upper surface of the mounting portion 151 has the same height as the upper surface of the support 130, the description of the mounting portion 151, the protruding portion 152, and the reinforcing portion 153 is shown in FIG. 5 and the description of the mounting portion 151, the protruding portion 152, and the reinforcing portion 153 with reference to FIG. 6.

Since the upper surface height of the mounting part 151 is the same as the upper surface height of the support 130, the edges of the slab panels 20 supported on the support 130 are not caught by the mounting part 151.

5 and 6, the mounting parts 151 located on the same side of the support 130 and adjacent to each other while holding different slab panels 20 are connected to the connection part 154. can connect to each other. Accordingly, the mounting parts 151 located on the same side of the support 130 and adjacent to each other can be formed as one body.

The fixing part 155 is provided on the upper surface of the support 130 to cross the support 130, and connects and fixes the protrusions 152 to each other.

When the protrusions 152 are provided on the mounting part 151, the fixing part 155 is caught on the upper surface of the support 130, so that the protrusions 152 are inserted into the mounting part 151. Depth can be limited. Accordingly, the protrusions 152 can be prevented from leaving downward from the mounting portion 151.

Additionally, since the fixing part 151 fixes the protrusions 152, a pair of the protrusions 152 can be maintained connected to each other. Accordingly, loss of the protrusions 152 can be prevented.

Although the present invention has been described above with reference to preferred embodiments, those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the present invention as set forth in the following patent claims. You will understand that it is possible.

10: wall panel 20: slab panel
21: Pinhole 22: Outermost pinhole
30: Support 100: Slab panel support device
110: Holder 111: Opening
120: Coupling member 121: Third pin coupling hole
130: support 131: accommodation space
132: Mounting groove 133: Second pin coupling hole
140: Connecting member 141: First pin coupling hole
142: Fourth pin coupling hole 150a, 150b: Panel holding member
151: Mounting portion 152: Protrusion
153: reinforcement part 154: connection part
155: fixing part P1: first pin
P2: 2nd pin

Claims (11)

Supports provided to cross between wall panels facing each other and supporting the lower surfaces of the slab panels; and
It includes panel mounting members that are mounted at positions corresponding to both ends of the slab panels along each of both sides of the support, and that support the slab panels with protrusions that protrude upward,
Each of the panel holding members is,
It is provided on both sides of the support, and includes a mounting part on which the protrusion is mounted to be detachable,
If the protrusion is damaged, replace and install only the damaged protrusion,
The mounting portion protrudes higher than the upper surface of the support, and the edges of the slab panels supported on the support are caught by the mounting portion to align the positions of the slab panels. delete According to paragraph 1,
A slab panel support device that is located on the same side of the support and supports different slab panels while connecting adjacent mounting parts to form an integrated unit. delete Supports provided to cross between wall panels facing each other and supporting the lower surfaces of the slab panels; and
It includes panel mounting members that are mounted at positions corresponding to both ends of the slab panels along each of both sides of the support, and that support the slab panels with protrusions that protrude upward,
Each of the panel holding members is,
It is provided on both sides of the support, and includes a mounting part on which the protrusion is mounted to be detachable,
If the protrusion is damaged, replace and install only the damaged protrusion,
The mounting portion has the same height as the upper surface of the support,
Each of the panel mounting members is provided on an upper surface of the support to cross the support, and further includes a fixing part that connects and fixes the protrusions to each other,
A slab panel support device that is located on the same side of the support and supports different slab panels while connecting adjacent mounting parts to form an integrated unit. Supports provided to cross between wall panels facing each other and supporting the lower surfaces of the slab panels; and
It includes panel mounting members that are mounted at positions corresponding to both ends of the slab panels along each of both sides of the support, and that support the slab panels with protrusions that protrude upward,
Each of the panel holding members is,
It is provided on both sides of the support, and includes a mounting part on which the protrusion is mounted to be detachable,
If the protrusion is damaged, replace and install only the damaged protrusion,
A slab panel support device, characterized in that the protrusion supports the outermost pinholes located at the outermost part of the pinholes formed along the edge of the slab panel during the installation or disassembly of the slab panel. According to clause 6,
A slab panel support device, characterized in that the size of the outermost pinholes is made larger than the size of the remaining pinholes so that the protrusion easily supports the slab panel. According to paragraph 1,
Holders provided along the top of each of the wall panels and having openings;
Coupling members provided inside each of the holders and exposed to the outside through the opening; and
It further includes connecting members connecting the coupling members and the support,
Each of the connecting members has a plurality of first pin coupling holes for pin coupling with the support,
The support has a pair of second pin coupling holes at each end of both sides,
A slab panel support device, characterized in that each connecting member is prevented from rotating with respect to the support by pin-coupling the first pin coupling holes and the second pin coupling holes. According to clause 8,
Characterized by adjusting the position of the support between the connection members so that the panel holding members correspond to both ends of the slab panels by adjusting the position where the first pin coupling holes are pin coupled with the second pin coupling holes. A slab panel support device. According to clause 8,
A slab panel support device, characterized in that the spacing between the second pin coupling holes is the same as the spacing between the first pin coupling holes or is twice the spacing between the first pin coupling holes. According to clause 8,
Each of the coupling members has a third pin coupling hole for pin coupling with the respective connecting members,
Each of the connecting members has a fourth pin engaging hole that is pin-connected to the third pin engaging hole,
A slab panel support device wherein at least one of the third pin coupling hole and the fourth pin coupling hole has a vertically elongated hole shape to secure a movement space for the support during the installation and disassembly of the support. .

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