JPH05148993A - Folding type stairase - Google Patents

Abstract

PURPOSE:To ensure stability at the time of installation and enable one-step assembling and folding works to be conducted. CONSTITUTION:An intermediate square frame 3 including a pair of upright posts is formed, and a right frame 4 having roughly the same shape as that of the intermediate frame 3 is arranged on one side of the intermediate frame 3. The intermediate frame 3 and right frame 4 are connected by a horizontal member 6 to constitute a foothold section 1. A left frame 5 having roughly the same shape as that of the intermediate frame 3 is arranged on the other side of the intermediate frame 3, and the intermediate frame 3 and left frame 5 are connected by a horizontal member 9. A stairs footboard 14 is mounted between the intermediate frame 3 and left frame 5 in such a way it can be folded freely to constitute a stairs section 2. The foothold section 1 and stairs section 2 can be folded freely in such a way they form a bottom where the intermediate frame 3 is sandwiched between the right frame 4 and left frame 5 from the right and left sides.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used as a general-purpose elevating staircase that can be combined with temporary scaffolding for construction work and support work, and can be assembled and folded with one touch. The present invention relates to a foldable staircase unit that sufficiently secures robustness in a folded state.

[0002]

2. Description of the Related Art The applicant has developed various types of folding stairs at a construction site.
No. 58437, a patent application for "folding staircase unit" has been filed.

This "folding staircase unit" is composed of a base frame body having a pair of left and right rear construction sites and a horizontal frame member horizontally swingably connected to each rear construction site. A pair of left and right side frames that are foldably provided inside the base frame by connecting the front side building to the frame, a floor plate that is connected to the base frame and swings vertically from a horizontal position, and a floor plate It is composed of a stair tread plate that is erected on the body and is foldable inside the base frame in conjunction with the floor plate, and is horizontal to the side frame opened at a right angle from the inside of the base frame. The floor plate is detachably connected.

[0004]

However, in the conventional "folding staircase unit" (Japanese Patent Application No. 3-58437), the staircase unit is first pulled up by a crane or the like before use, and the side frame is kept in that state. It was necessary to open the body to the left and right sides of the base frame in a double-door shape, and swing the floor plate vertically to fix it, which made assembly and installation of the staircase unit very troublesome.

Therefore, it takes time to install the staircase unit, which causes a delay in the construction period.

Further, before the respective members are assembled and fixed, the side frame and the floor plate are only swingably connected to the base frame, respectively. Therefore, vibration when the staircase unit is folded and conveyed is carried out. The side frame and the floor plate may be detached from the base frame and damaged due to impact or the like, and the robustness of the stair unit cannot be maintained.

Therefore, the present invention was created in order to solve the above-mentioned problems, and is a general-purpose elevating staircase that can be combined with temporary scaffolding and support work, and in particular, one-touch assembly and folding work can be performed. It is an object of the present invention to provide a foldable staircase unit that is capable of ensuring the robustness in the assembled state and the folded state.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a front construction site and a rear construction site, each of which includes a pair of construction sites, vertically between the front construction site and the rear construction site. The scaffold part is configured by connecting with the floor material that swings in the direction, and each scaffold part has
The stairs were set up so that they could be folded.

Further, the stairs are arranged between the scaffolds 2
It is composed of a single side plate and a plurality of tread plates that are swingably installed between both side plates.

[0010]

According to the present invention, at the time of storage, the upper ends of the front building and the rear building are suspended by a crane or the like, and, for example, the rear building is placed on the lower side, and the entire unit is laid down. Fold toward the rear building. On the other hand, at the time of use, with the entire unit laid down sideways, the front building and rear building are expanded to assemble the scaffolding and stairs, and in that state the upper ends of the front building and rear building are crane-mounted. Then, lift the whole unit and install and fix it in place.

It should be noted that, at the time of storage, the upper end of the front building may be lifted by a crane or the like and folded so that the front building and the rear building are close to each other with the entire unit standing upright.
In addition, when using, gradually lower the entire unit that is being lifted in the folded state, and first install and fix the lower end of the rear building to a specific position while lowering it to a predetermined position, and then lift the stair unit. By further lowering, the front building and the floor material may be vertically swung to assemble the scaffolding and the stairs, and the lower end of the front building may be installed and fixed in that state.

[0012]

Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, the folding staircase unit of the present invention includes a front building 1 and a rear building 2 each including a pair of building, a front building 1 and a rear building 2. The scaffolding part 4 is configured by connecting a plurality of floor materials 3 that swing vertically between them.

The front side building 1 and the rear side building 2 secure a strength by connecting a pair of buildings by means of reinforcing rods 5 and 6.

As shown in FIG. 3, the floor material 3 arranged between the front side building 1 and the rear side building 2 is connected to a lip channel steel, a square pipe or the like to form a frame 7 on which the frame 7 is formed. Further, an iron plate 8 having a predetermined anti-slip means is fixed and formed. Any means such as providing a plurality of protrusions on the iron plate 8 may be used as the slip preventing means. Similarly, although the iron plate 8 shown in FIG.
The shape is not limited to this, and any shape may be used.

Further, as shown in FIG. 3, nuts 8 are fixed to both side ends of the frame 7 which constitutes the floor material 3. On the other hand, the front side building 1 and the rear side building 2 have a small plate-shaped hinge 9
Is fixed, and a bolt 10 that penetrates the hinge 9 is screwed into the nut 8 of the floor material 3 so that the floor material 3 can swing vertically between the front building 1 and the rear building 2. It is attached.

Further, as shown in FIGS. 6 and 7, the hinge 9 has a lip groove shape, and a substantially hat-shaped fixing metal fitting 29 is arranged in the hinge 9, and the bolt 10 constitutes the floor member 3. When screwed into the nut 8 of the frame 7, the floor material 3
It can be firmly fixed in a vertical position with respect to the front side building 1 and the rear side building 2. That is, as shown in FIG. 8 (I), the U-shaped protruding portion 32 of the fixing bracket 29 is connected to the frame piece of the flooring 3 while the flange piece 30 of the fixing bracket 29 is engaged with the lip piece 31 of the hinge 9. The bolt 10 is inserted between both lip pieces 33, and the bolt 10 is screwed into the nut 8 of the frame 7 in that state. As a result, the U-shaped protrusion 32 of the fixing bracket 29 supports the frame 7 at a position parallel to the hinge 9, so that the floor material 3 is positioned vertically to the front building 1 and the rear building 2. It can be firmly fixed to.

As shown in FIG. 7, the bolt 10 is provided with a pressing piece 37 for pressing the fixing metal fitting 29 in the frame 7 constituting the floor material 3. Then, the bolt 10 is inserted into an attachment hole 36 formed in the hinge 9 via a fixing plate 35 attached to one side surface of the hinge 9 by a plurality of pins 34. On the other hand, a mounting hole 38 having a diameter smaller than that of the pressing piece 37 of the bolt 10 is formed in the fixing fitting 29 arranged in the hinge 9, and the bolt 10 is inserted. Therefore, when the bolt 10 is screwed into the nut 8 of the frame 7,
As shown in (I), the pressing piece 37 of the bolt 10 pushes the fixing bracket 29 toward the frame 7, and the U-shaped protruding portion 30 of the fixing bracket 29 is inserted between both lip pieces 33 of the frame 7 to be fixed. it can. At this time, when the spring body 39 is arranged so as to surround the periphery of the nut 8, as shown in FIG.
When the bolt 10 is loosened, the spring body 39 is fixed to the fixing bracket 29.
Is pushed back to the outside of the frame 7, so that the staircase unit can be easily folded. Further, as shown in FIG. 6, by forming the end portion of the hinge 9 in an arc shape, when the staircase unit is folded (FIG. 2), the end portion of the hinge 9 and the rear side building 2 come into contact with each other. The stairs unit can be brought into contact with each other for stability when folded.

Further, a reinforcing diagonal member 12 is attached to the lower surface of the floor member 3 via a hinge 11 as shown in FIG. The reinforcing diagonal member 12 is formed by connecting two pipes in a substantially L-shape, and an open side base end portion thereof is rotatably attached to the lower surface of the floor member 3 via a hinge 11. The hinge 11 is, for example, as shown in FIG. 4, fixed with two small plate pieces on the back surface of the frame 7 to sandwich the open-side base end portions of the reinforcing diagonal members 12, respectively, and use a bolt or the like penetrating in the lateral direction. It is a pivotal support. When the staircase unit is folded, the reinforcing diagonal member 12 is housed so as to contact the lower surface of the floor material 3 (two-dot chain line in FIG. 4), and when the staircase unit is assembled, the reinforcement diagonal member 12 is perpendicular to the floor material 3. The lower end portion is rotated and fixed to the front building 1 with bolts 13 or the like to secure the robustness of the entire staircase unit (solid line in FIG. 4).
In the figure, reference numeral 14 is a reinforcing diagonal member 12 through a bolt 13 or the like.
Is a connecting piece for fixing the to the front side building 1.

In this manner, for example, as shown in FIG. 1, the scaffolding 4 is formed in three stages between the front building 1 and the rear building 2. The number of scaffolds 4 is not limited to that shown in the figure, and may be increased or decreased as appropriate according to the scale of the building to be constructed.

As shown in FIGS. 1 and 2, stairs 15 are foldably installed on each scaffold 4. The staircase portion 15 is composed of two side plates 16 and 17 arranged between the scaffolds 4 and a plurality of step plates 18 that are swingably installed between the side plates 16 and 17. Among these, as shown in FIG. 2, the side plate 16 near the front side building 1 is inclined via hinges 19 and 20 to each floor material 3 of the scaffolding portion 4 arranged at a predetermined interval in the vertical direction. It is attached in a shape. The side plate 17 near the rear building 2 has its upper end directly fixed to the rear building 2 and its lower end fixed to a reinforcing rod 6 arranged in the rear building 2 to form the side plate 16. It is attached so that it is parallel to. The tread 18, as shown in FIG. 8, is a tread hinge 2 provided on the side plates 16 and 17 mutually.
Both ends of the tread 18 are rotatably connected to the Nos. 1 and 22.

In addition to this, as shown in FIGS. 1 and 2, the floor material 3 and the side plates 16 of the staircase portion 15 which are arranged at predetermined intervals in the vertical direction with the floor material 3 interposed therebetween, The stairs 15 are reinforced by appropriately connecting the reinforcing rods 23 and 24. That is, the upper end portion of the reinforcing rod 23 is fixed to the side plate 16 of the stair portion 15 located above, as shown in FIG.
As shown in FIG. 2, the lower end of the reinforcing rod 23 has a hinge 25.
It is fixed to the floor material 3 via. Further, as shown in FIG. 2, the upper end of the reinforcing rod 24 is fixed to the floor member 3 via the hinge 25 similarly to the lower end of the reinforcing rod 23, and the lower end of the reinforcing rod 24 is located below. Side plate 16 of staircase 15
It is fixed to. Further, a handrail 26 is attached to the stair portion 15 in order to ensure safety when walking on the stairs. The upper end of the handrail 26 is fixed to the hinge 25 of the floor material 3, and the lower end is fixed to the side plate 16.

In addition, the upper end of the side plate 17 of the staircase portion 15 located on the uppermost floor and the side plate 17 of the staircase portion 15 located on the lowermost floor.
As shown in FIG. 1, the lower end portion is connected to the reinforcing rods 27 and 28, and the strength thereof is maintained.

When a joint consisting of a connecting pin and a fitting cylinder is provided at the upper and lower ends of the front building 1 and the rear building 2 which form the scaffolding 4 and the staircase 15 (not shown), a plurality of joints are provided. It is convenient when stacking the folding staircase units.

The method for assembling and installing the folding staircase unit according to the present invention will be described below.

FIG. 1 is a perspective view showing a frame structure in use. To fold from this state, suspend the upper ends of the front side building 1 and the rear side building 2 with a crane or the like, and for example, fold down the entire unit with the rear side building 2 facing down, and in that state, As shown, the front side building 1 is folded toward the rear side building 2. When not in use, it is stored and transported in this state. At this time, as shown in FIG. 9, when a connecting piece 40 having an arcuate end is attached to a predetermined position of the front side building 1 so as to come into contact with the rear side building 2 of another staircase unit, Stable stacking of multiple folded stair units for easy transportation.

On the other hand, at the time of use, the front building 1 and the rear building 2 are unfolded to leave the scaffolding 4 and the stairs 15, the front building 1 and the reinforced diagonal member 12 with the whole unit lying down. After assembling, the upper ends of the front building 1 and the rear building 2 are lifted by a crane or the like in this state to install and fix the whole unit at a predetermined place.

It should be noted that by removing the reinforcing diagonal member 12 in advance, the upper end of the front building 1 is lifted by a crane or the like at the time of storage, and the front building 1 and the rear building 1 are kept while the entire unit is standing. You may fold so that the ground 2 may approach. Also, when using, gradually lower the entire unit that is being lifted in the folded state, and first set the lower end of the rear side building 2 at a specific position in the state where it is lowered to a predetermined position, and then fix the stairs that are being lifted. By further lowering the unit, the front side building 1 and the floor material 3 may be vertically swung, the scaffold part 4 and the staircase part 15 may be assembled, and the lower end of the front side building 1 may be installed and fixed in that state. ..

[0029]

Industrial Applicability According to the present invention, a floor material 3 for vertically swinging a front building 1 and a rear building 2 each including a pair of buildings between the front building 1 and the rear building 2 is provided. The scaffolding 4 is connected to the scaffolding 4, and the stairs 15 are foldably installed on each scaffolding 4. Therefore, the upper end of the front side building 1 is lifted by a crane or the like to scaffolding the scaffolding 4 and the stairs. 15 can be folded with one touch.

Therefore, the dismantling and withdrawing work is extremely easy, compact storage is possible at the time of storage, and the storage space can be reduced. Further, since each of the constituent parts of the scaffold part 4 and the staircase part 15 are all connected to the front side building 1 and the rear side building 2, it is possible to prevent the components from being lost and the storage management is easy. There is.

Similarly, the staircase unit 4 and the staircase 15 are all connected to the front building 1 and the rear building 2 regardless of whether they are folded or assembled. Not only when assembled (in use) but also when the staircase unit is folded and transported, the robustness of the entire unit can be sufficiently ensured.

Further, a front building 1 and a rear building 2 each including a pair of buildings are connected by a floor material 3 which vertically swings between the front building 1 and the rear building 2. Since the scaffolding portion 4 is formed and the self-standing type staircase unit is formed in a state where the scaffolding portion 4 and the staircase portion 15 are assembled, the assembly and installation work during use becomes extremely easy. Moreover, since it is a self-supporting stair unit, it becomes a general-purpose elevating staircase that can be combined with temporary scaffolding and support work, and can also be used together with a unitized self-supporting temporary scaffolding.

On the other hand, the staircase portion 15 is composed of two side plates 16 and 17 arranged between the scaffold portions 4 and a plurality of step plates 18 oscillatably provided between the side plates 16 and 17. Therefore, the folding work or the assembling work of the stairs 15 is a simple work that interlocks with the scaffolding 4 arranged between the front building 1 and the rear building 2. Further, the folded state of the staircase portion 15 can be made very compact.

Furthermore, when the folding staircase unit of the present invention is used, the front building 1 and the rear building 2 are unfolded while the whole unit is lying down, and the scaffolding 4 and the stair 15 are used.
Assemble the above, and in that state, the upper ends of the front side building 1 and the rear side building 2 are lifted by a crane and the whole unit is installed and fixed in place, so anyone can easily fold it at various construction sites. A tatami staircase unit can be installed and fixed.

To fold the folding staircase unit,
Suspending the upper ends of the front building 1 and rear building 2 with a crane,
For example, with the rear building 2 down
In that state, since the front side building 1 is folded toward the rear side building 2, the work at high places is reduced and the stair unit can be safely removed.

When using the folding staircase unit of the present invention, the upper end of the front building 1 is lifted by a crane or the like and folded so that the front building 1 and the rear building 2 are close to each other. Move in that state, and at the time of installation, gradually lower the folding staircase unit that is being lifted, and first install and fix the lower end of the rear side building 2 in a specific position while lowering it to a predetermined position, After that, by further lowering the suspended stair unit, the front building 1 and the floor material 3 are vertically swung, and the scaffold portion 4 and the stair portion 15 are assembled, and the lower end portion of the front building 1 is assembled in that state. When installed and fixed, the folding staircase unit can be installed and fixed more quickly. That is, front side building 1
When the upper end of the is lifted with a crane or the like, the staircase unit is naturally folded, and by lowering the suspended staircase unit, the front side building 1 and the rear side building 2 are naturally deployed and are in use. Therefore, anyone can easily install and fix the staircase unit without requiring skill in assembling and installing the folding staircase unit.

In addition to the above, according to the present invention, a floor material 3 that vertically swings a front building 1 and a rear building 2 including a pair of buildings between the front building 1 and the rear building 2 is provided. The scaffolding 4 is connected to each other to form the scaffolding 4, and the stairs 15 are foldably installed on each scaffolding 4. Since the configuration is extremely simple, it is preferable for mass production and the product can be provided at low cost. It has various industrially beneficial effects.

[Brief description of drawings]

FIG. 1 is a perspective view showing a usage state.

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

FIG. 3 is a perspective view showing how a floor material is attached to a building site.

FIG. 4 is a rear perspective view of the floor material showing a state where the reinforcing diagonal member is attached to the building.

FIG. 5 is an exploded perspective view of a staircase portion showing an attached state of a tread plate.

FIG. 6 is a perspective view showing a mounting state of a hinge and a frame.

FIG. 7 is an exploded perspective view showing a mounting state of a hinge and a frame.

FIG. 8 is a cross-sectional view showing an attached state of a hinge and a frame.

FIG. 9 is a perspective view of a connecting piece attached to a building site.

[Explanation of symbols]

 1 Front Building 2 Rear Building 3 Flooring 4 Scaffolding 5 Reinforcing Rod 6 Reinforcing Rod 7 Frame 8 Iron Plate 9 Hinge 10 Bolts 11 Hinge 12 Reinforcing diagonal 13 Bolts 14 Connecting piece 15 Stairs 16 Sideboard 17 Sideboard 18 Stepboard 19 Hinge 20 Hinge 21 Hinge 22 Hinge 21 Reinforcing rod 24 Reinforcing rod 25 Reinforcing rod 25 Handrail 27 Reinforcing rod 28 Reinforcing rod 29 Fixing metal fitting 30 Collar piece 31 Lip piece 32 Projecting part 33 Lip piece 34 Pin 35 Fixing plate 36 Mounting hole 38 Pressing piece 38 Mounting hole 39 Spring body 40 Connecting piece

Claims (2)

[Claims] 1. A scaffold part is constructed by connecting a front building and a rear building, each including a pair of building, with a floor material that vertically swings between the front building and the rear building. , A foldable staircase unit characterized in that stairs are foldably installed on each scaffold. 2. The folding staircase unit according to claim 1, wherein the staircase portion is composed of two side plates arranged between the scaffolding portions and a plurality of stepped plates which are swingably provided between the side plates.