JPH04347258A - Folding type staircase device and assembling and installing method thereof - Google Patents

Abstract

PURPOSE:To ensure stability at the time of installation, and to conduct assembly operation and folding operation in a single operation manner. CONSTITUTION:A square intermediate frame body 3 including a pair of building grounds is formed, a right frame body 4 having approximately the same shape as the intermediate fame body 3 is juxtaposed to one side of the intermediate frame body, and the intermediate frame body 3 and the right frame body 4 are connected by a horizontal member 6, thus constituting a scaffolding section 1. A left frame body 5 having an approximately the same shape as the intermediate frame body 3 is juxtaposed to the other side of the intermediate frame body 3, the intermediate frame body 3 and the left frame body 5 are connected by a horizontal member 9, and a staircase footboard body 14 is mounted between the intermediate frame body 3 and the left frame body 5 in a folding-free manner, thus organizing a staircase section 2. The scaffolding section 1 and the staircase section 2 can freely be folded in a trough-folding shape that the right frame body 4 and the left fame body 5 holds the intermediate frame body 3 from both left and right sides.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention is used as a general-purpose ascending/descending staircase that can be freely combined with temporary scaffolding or shoring for construction work, and is a folding type that can be assembled and installed with one touch. The present invention relates to a stair unit and a method for assembling and installing a folding stair unit.

0002

[Prior Art] The applicant has developed various types of folding stairs for construction sites.
No. 58437, a patent application has been filed for a "folding stair unit."

[0003] This "folding staircase unit" has a base frame having a pair of left and right rear buildings, horizontal members are connected to each of the rear buildings so as to be horizontally swingable, and the horizontal members are horizontally swingable. A pair of left and right side frames that connect the front building to the frame and are foldable inside the base frame, a floor plate that is connected to the base frame and swings from a horizontal position to a vertical direction, and a floor plate. It consists of a stair tread body that is installed upright on the body, and a stair tread body that is foldably installed inside the base frame body in conjunction with this floor plate body, and a side frame body that opens at right angles from the inside of the base frame body, and a horizontal stair tread body. The floorboards are removably connected.

0004

[Problem to be solved by the invention] However, the patent application
The "Folding Stair Unit" No. 58437 combines multiple stair treads vertically, so it is suitable for use at construction sites when constructing large buildings.
At construction sites when building small, low-height buildings, the stair unit itself was too large and difficult to use.

[0005] Furthermore, when constructing a two-story building, for example, it is wasteful to use a stair unit by combining three or more stair treads in the vertical direction.

Furthermore, the conventional "folding stair unit"
Consisting of a base frame and side frames, the entire stair unit is supported at four points, which are the base ends of the base frame and side frames, resulting in a lack of stability, especially when multiple stair units are used in combination. was.

[0007] On the other hand, when using the stairway unit, the entire stairway unit is first lifted up using a crane or the like, and in this state, the side frames are opened in a double-door shape on the left and right sides of the base frame body, and the floorboard body is swung vertically and fixed. Therefore, the work of assembling and installing the stair unit was extremely troublesome.

[0008] Therefore, it takes time to install the stair unit, which causes a delay in the construction period.

[0009] Therefore, this invention was created to solve the above-mentioned problems, and is a general-purpose ascending/descending staircase that can be freely combined with temporary scaffolding or shoring. To provide a folding stair unit that allows one-touch assembly and folding operations, and a method for assembling and installing the folding stair unit.

0010

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention forms a rectangular inner frame body including a pair of building lots, and has a shape substantially the same as that of the inner frame body on one side thereof. The right frame bodies of are arranged side by side, and the middle frame body and the right frame body are connected by a horizontal member swingably attached to the middle frame body in a direction perpendicular to the middle frame body to constitute a scaffolding part, and A left frame body having substantially the same shape as the middle frame body is arranged side by side on the other side of the middle frame body, and the middle frame body and the left frame body are attached to be swingable in a direction perpendicular to the middle frame body. The stairs are connected by a horizontal member, and a stair tread body is foldably provided between the middle frame body and the left frame body to constitute a stairway part, and the scaffolding part and the stairway part are connected to the right frame body and the left frame body. The inner frame body can be folded freely into a valley-fold shape sandwiching it from both the left and right sides.

Further, the stair tread body is composed of both fixed side plates fixed to the left frame body and the middle frame body, and a plurality of treads swingably installed between both the fixed side plates.

Furthermore, joints are provided at the upper and lower ends of the middle frame and the left and right frames to connect the upper and lower ends of other folding stair units, thereby making it possible to stack a plurality of stair units.

On the other hand, a rectangular middle frame body including a pair of building lots is formed, and a right frame body having substantially the same shape as the middle frame body is arranged in parallel on one side of the middle frame body, and the middle frame body and the right frame body are arranged side by side. The scaffold is connected to the body by a horizontal member swingably attached to the middle frame in a direction perpendicular to the middle frame, and on the other side of the middle frame there is a The left frame bodies are arranged side by side, and the middle frame body and the left frame body are connected by a horizontal member swingably attached to the middle frame body in a direction perpendicular to the middle frame body, and the middle frame body and the left frame body are A stair tread body is foldably provided between the stair tread body to form a stair portion, and the scaffolding portion and the stair portion are foldable in a valley-fold shape in which the right frame body and the left frame body sandwich the middle frame body from both left and right sides. The upper ends of the right and left frames are lifted up using a crane, etc., the folding stair unit is folded into a valley-fold shape, and moved in that state. When installing, lift it up. Gradually lower the folding stair unit that is being lifted up. First, lower the lower end of the middle frame to a specific position while lowering it to a specified position. Then, lower the lifted stair unit further to lower the right frame. The above-mentioned object was also achieved by opening the body and the left frame and fixing the lower ends of the right and left frames in this state.

[0014]

[Operation] In this invention, the right frame body and the left frame body are connected to the middle frame body by a horizontal member that is swingably attached to the middle frame body in a vertical direction, and the stair tread body is also connected to the middle frame body. Because it is foldably installed between the body and the left frame, when storing it, the upper ends of the right and left frames are lifted up with a crane, etc., and the scaffolding and stairs are lifted, and the middle frame is lifted on both the left and right sides. Fold it into a valley-fold shape.

On the other hand, when in use, the upper ends of the right frame and the left frame are lifted up by a crane or the like, the foldable stair unit is folded into a valley fold, and moved in that state. During installation, the suspended folding staircase unit is gradually lowered, and while it is lowered to a predetermined position, the lower end of the middle frame is installed and fixed at a specific position. Then, by further lowering the lifted staircase unit, the right frame body and the left frame body are opened, and in this state, the lower ends of the right frame body and the left frame body are installed and fixed, respectively.

[0016]

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the folding stairway unit of the present invention has a rectangular inner frame 3 including a pair of building lots, and a wall substantially identical to the inner frame 3 on one side thereof. The right frame bodies 4 of the same shape are arranged side by side, and the middle frame body 3 and the right frame body 4 are connected by a horizontal member 6 attached to the middle frame body 3 so as to be swingable in a direction perpendicular to the middle frame body 3. A left frame body 5 having substantially the same shape as the middle frame body 3 is arranged side by side on the other side of the scaffold part 1 and the middle frame body 3, and the middle frame body 3 and the left frame body 5 are attached to the middle frame body 3. The middle frame body 3 and the left frame body 5 are connected by a horizontal member 9 that is swingably attached in a vertical direction.
and a stair portion 2 configured by foldably providing a stair tread body 14 between the stair tread body 14 and the stair tread body 14.

The right frame 4 is connected to the middle frame 3 by a plurality of horizontal members 6, as shown in FIG. One end of the horizontal member 6 is connected to the middle frame 3 via a hinge 7, as shown in FIG.
is swingably connected to. Further, the other end of the horizontal member 6 is swingably connected to the right frame body 4 via a hinge 8, as shown in FIG. Similarly, the left frame body 5 is also connected to the middle frame body 3 by a plurality of horizontal members 9, as shown in FIG. One end of the horizontal member 9 is swingably connected to the middle frame 3 via a hinge 10, as shown in FIG. Further, as shown in FIG. 1, the other end of the horizontal member 9 is connected to the left frame body 5 via a hinge 11.
is swingably connected to.

The hinges 7 and 10 that connect the horizontal members 6 and 9 to the middle frame body 3 have, for example, a bottom plate and come into contact with the lower surfaces of the ends of the horizontal members 6 and 9. The structure is such that it swings only upwards. Furthermore, the upper surfaces of the other ends of the horizontal members 6 and 9 are provided with, for example, projecting pieces that abut on the right frame 4 and the left frame 5, respectively, so that the horizontal members 6 and 9 swing only downward. It has a structure. In the figure, reference numerals 12 and 13 are reinforcing rods for ensuring the strength of the scaffolding part 1 and the stairway part 2. The lower and upper reinforcing rods 12 of the scaffolding section 1 are arranged and fixed throughout the frame (2, 3) constituting the scaffolding section 1, as shown in FIGS. 6 and 7. Further, the reinforcing rods 13 at the lower and upper stages of the staircase portion 2 are arranged and fixed between the horizontal members 9, as shown in FIGS. 6 and 7.

1, FIG. 8,
As shown in FIG. 9, the stair tread body 14 is provided in a foldable manner. As shown in FIG. 1, this stair tread body 14 swings between two fixed side plates 15 and 16 that are fixed to the left frame body 5 and the middle frame body 3 in an inclined manner, and both fixed side plates 15 and 16. It consists of a plurality of tread plates 17 freely installed. Treadboard 17
As shown in FIG. 10, both ends of the tread plate 17 are rotatably connected to tread hinges 18 and 19 provided on the fixed side plates 15 and 16. Further, reference numeral 20 is a handrail provided on the inclined upper surface of the fixed side plate 16, which enhances safety during use. In addition, as shown in FIGS. 1 and 8, the left frame 5 constituting the staircase portion 2 has reinforcing rods 2.
1 is attached. In the figure, the reference numeral 24 indicates the scaffolding part 1
and telescopic braces installed to ensure the strength of the stairway section 2.

[0021] Furthermore, as shown in FIG.
A joint 25 is provided in each case. This joint 25 forms, for example, a connecting pin 26 and a fitting tube 27, and is used to fit and connect a plurality of folding stair units when stacking them.

As shown in FIGS. 8 and 9, the folding stair units are stacked such that the scaffolding part 1 is placed on top of the scaffolding part 1 and the stairway part 2 is placed on top of the stairway part 2. At this time, as shown in FIGS. 6 and 7, large floorboards 22 made of, for example, mesh iron plates are installed and fixed on the lower and upper stages of the scaffolding section 1 constituting the folding stairway unit. In addition, as shown in FIGS. 6 and 7, the lower and upper steps of the staircase section 2 are also provided with
Small floor plates 23 are installed and fixed at the positions where the reinforcing rods 13 are attached.

On the other hand, there are stairs 2 on top of the scaffolding 1;
The folding stair units may be stacked so that the scaffolding part 1 is placed on top. At this time, in the stairway portion 2, the small floor board 23 is installed and fixed at the position where the reinforcing rod 13 is attached at the top of the tread 17. In addition, scaffolding part 1
At the upper level, a small floorboard 22 is installed and fixed at a position where a reinforcing rod 12 is attached, which is lined up with the reinforcing rod 13 at the top of the tread 17 of the staircase part 2. In addition, in the figure,
Reference numeral 28 denotes a hanging piece attached to the upper corner of the right frame 4 and the left frame 5 in order to lift the scaffolding part 1 and the staircase part 2 with a hook 29 of a crane or the like.

[0024] The method of assembling and installing the folding stair unit will be explained below.

FIG. 1 is a perspective view of the frame in use. To fold from this state, right frame body 4 and left frame body 5
Hang the rope on the hanging piece 28 attached to the upper corner of the
Lift it up using crane hook 29, etc. In this way,
When the entire folding stair unit is lifted up, the scaffold section 1 and the stair section 2 are folded into a valley-fold shape so as to sandwich the middle frame body 3 from both left and right sides, as shown in FIGS. 2 to 5. It is stored and transported in this state when not in use.

On the other hand, when in use, the hook 29 of the crane
Gradually lower the folding stair unit that has been lifted up by means of, etc., and first, while it is lowered to a predetermined position, the lower end of the middle frame body 3 is fixed at a specific position. Then, by lowering the lifted staircase unit further, the right frame 4 and left frame 5 are opened, and the lower ends of the right frame 4 and left frame 5 are fixed in this state.

When a plurality of folding stair units are stacked, similarly, a rope is hung on the hanging piece 28 attached to the upper corner of the right frame 4 and left frame 5, and a crane hook 29 or the like is attached. lift it up. Then, when in use, the middle frame body 3
After fixing the lower end in a predetermined position, gradually lower the hook 29 of the crane, open the scaffolding part 1 and the staircase part 2, and install and fix it.

[0028]

[Effects of the Invention] The present invention achieves its original purpose by being constructed as described above. That is, according to claim 1, the scaffold section 1 and the stair section 2 having the stair tread body 14 can be folded with one touch. Therefore, disassembly and removal work is extremely easy, and when stored, compact storage is possible, and storage space can be reduced. Furthermore, since all of the component parts are connected to the scaffolding part 1 and the staircase part 2, there are advantages such as prevention of loss of the component parts and easy storage management.

Furthermore, a rectangular middle frame body 3 including a pair of building lots is formed, and a right frame body 4 having substantially the same shape as the middle frame body 3 is arranged in parallel on one side of the middle frame body 3, and this middle frame body 3 and a right frame body 4 connected by a horizontal member 6, and a left frame body 5 having substantially the same shape as the middle frame body 3 is arranged side by side on the other side of the middle frame body 3, The stair section 2 is constructed by connecting the middle frame body 3 and the left frame body 5 by a horizontal member 9, and providing a stair tread body 14 between the middle frame body 3 and the left frame body 5 so as to be foldable. As shown in FIG. 1, a self-supporting staircase unit is formed with the scaffold section 1 and the staircase section 2 open, so that assembly and installation work during use becomes extremely easy.

At this time, the middle frame 3, the right frame 4, the left frame 5
Since the entire stair unit is supported by a total of six locations at the bottom end, the stair unit can be stably erected. Moreover, since it is a self-supporting type staircase unit, it becomes a general-purpose ascending and descending staircase that can be freely combined with temporary scaffolding and shoring, and can also be used with unitized self-supporting type temporary scaffolding.

According to claim 2, the folding and assembling work of the stair tread body 14 is carried out when the stair tread body 14 is placed in the stair portion 2.
This is a simple task that is linked to Further, the folded state of the stair portion 2 having the stair tread body 14 is made compact.

According to claim 3, the joints 25 connect a plurality of stacked folding stair units to each other, thereby making it possible to integrate the plurality of units.

At this time, the stair section 2 is provided with one stair tread body 14, and the entire unit is relatively small, so by connecting multiple units, the height of the entire unit can be adjusted finely. is possible.

On the other hand, when using the folding stair unit of the present invention, the upper ends of the right frame 4 and left frame 5 are lifted up with a crane or the like, and the folding stair unit is folded into a valley shape. When moving and installing the folding stair unit, the suspended folding stair unit is gradually lowered, and while it is lowered to a predetermined position, the lower end of the middle frame body 3 is fixed at a specific position.
After that, the lifted staircase unit is further lowered to open the right frame 4 and left frame 5, and in this state, the lower ends of the right frame 4 and left frame 5 are fixed, so that no one can can quickly install and secure the folding stair unit.

That is, when the upper ends of the right frame body 4 and the left frame body 5 are lifted up with a crane or the like, the stair unit is naturally folded into a valley-fold shape, and by lowering the lifted stair unit, the right frame body 4 and the left frame body 5 are lifted up. Since the body 4 and the left frame body 5 are in an open state, anyone can easily install and fix the foldable stair unit without requiring any skill in assembling and installing the folding stair unit.

Furthermore, by lowering the staircase unit lifted by a crane or the like, the right frame 4 and left frame 5 are opened, and the lower ends of the middle frame 3, right frame 4, and left frame 5 are opened. Since the entire structure is supported by a total of six locations, the stair unit can be installed and fixed in an extremely short time without the need for any special assembly work.

In addition, the present invention is composed of a scaffold section 1 and a stair section 2 having a stair tread body 14, and its structure is extremely simple, so it is suitable for mass production and has advantages such as being able to provide products at low cost. It produces various industrially useful effects.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a state of use.

FIG. 2 is a perspective view showing a folded state.

FIG. 3 is a left side view showing the folded state.

FIG. 4 is a front view showing the folded state.

FIG. 5 is a plan view showing the folded state.

FIG. 6 is a plan view showing the state of use.

FIG. 7 is a partially cutaway plan view showing the state of use.

FIG. 8 is a left side view showing the state of use.

FIG. 9 is a front view showing the state of use.

FIG. 10 is an exploded perspective view showing how the footboard is attached.

[Explanation of symbols]

1 Scaffolding section
2 Stairs section 3 Middle frame body
4 Right frame body 5
left frame body
6 Horizontal member 7 Hinge
8 Hinge 9 Horizontal member 10
Hinge 11 Hinge
12 Reinforcement rod 13 Reinforcement rod
14 Stair tread body 15 Fixed side plate
16 Fixed side plate 17 Step board
18 Stepboard hinge 19 Stepboard hinge 2
0 Handrail 21 Reinforcement rod
22 Floorboard 23 Floorboard 24
Bracing 25 joint
26 Connecting pin 27 Fitting tube
28 Hanging piece 29 Hook

Claims (4)

[Claims] Claim 1: A rectangular middle frame body including a pair of building sites is formed, and a right frame body having substantially the same shape as the middle frame body is arranged side by side on one side of the middle frame body, and the middle frame body and the right frame body are arranged side by side. The scaffold is connected to the body by a horizontal member swingably attached to the middle frame in a direction perpendicular to the middle frame, and on the other side of the middle frame there is a The left frame bodies are arranged side by side, and the middle frame body and the left frame body are connected by a horizontal member swingably attached to the middle frame body in a direction perpendicular to the middle frame body, and the middle frame body and the left frame body are A stair tread body is foldably provided between the stair tread body to form a stair portion, and the scaffolding portion and the stair portion are foldable in a valley-fold shape in which the right frame body and the left frame body sandwich the middle frame body from both left and right sides. A folding stair unit with the following features: 2. The folding stair tread according to claim 1, wherein the stair tread body comprises both fixed side plates fixed to the left frame body and the middle frame body, and a plurality of step treads swingably installed between both the fixed side plates. style staircase unit. 3. Joints are provided at the upper and lower ends of the middle frame body and the left and right frame bodies to connect the upper and lower ends of other folding stair units, thereby making it possible to stack a plurality of stair units. The folding stair unit described in 2. Claim 4: A rectangular middle frame body including a pair of building sites is formed, and a right frame body having substantially the same shape as the middle frame body is arranged side by side on one side of the middle frame body, and the middle frame body and the right frame body are arranged side by side. The scaffold is connected to the body by a horizontal member swingably attached to the middle frame in a direction perpendicular to the middle frame, and on the other side of the middle frame there is a The left frame bodies are arranged side by side, and the middle frame body and the left frame body are connected by a horizontal member swingably attached to the middle frame body in a direction perpendicular to the middle frame body, and the middle frame body and the left frame body are A stair tread body is foldably provided between the stair tread body to form a stair portion, and the scaffolding portion and the stair portion are foldable in a valley-fold shape in which the right frame body and the left frame body sandwich the middle frame body from both left and right sides. The upper ends of the right and left frames are lifted up using a crane, etc., the folding stair unit is folded into a valley-fold shape, and moved in that state. When installing, lift it up. Gradually lower the folding stair unit that is being lifted up. First, lower the lower end of the middle frame to a specific position while lowering it to a specified position. Then, lower the lifted stair unit further to lower the right frame. A method for assembling and installing a folding stair unit, characterized in that the body and left frame are opened, and the lower ends of the right frame and left frame are fixed in this state.