JPH031954Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a plurality of scaffolds arranged in a stairway on a staircase.

``Prior Art'' Conventionally, this type of scaffolding for staircases has been constructed by assembling a large number of rods vertically and horizontally on the stairs at the site. Regarding the combination of bars,
The many joints are clamped together, and the scaffolding itself is assembled by adjusting the clamp positions at the many joints so that it conforms to the steps of the stairs.

``Problems that the invention aims to solve'' Conventional scaffolding for staircases as described above takes time to assemble and dismantle because the many joints of the bars are clamped, and it is difficult to assemble and disassemble long bars on the stairs. Because they had to be swung around, they could damage the surrounding finished surfaces.

This invention solves these conventional problems.

``Means for solving the problem'' The indoor staircase scaffold of this invention is an indoor staircase scaffold that is arranged in multiple rows on the staircase, and has a relatively rotatable connection between the two pillars, front and back. Therefore, at least two horizontal members are spanned, and an angle adjustment mechanism is provided at the joint between the pillar and the horizontal member to adjust and fix their relative rotation angles, and a relative rotation angle is provided between the middle parts of the horizontal members. The vertical members are spanned by a rotatable connection, and two sets of joined bodies consisting of the pillars, horizontal members, angle adjustment mechanism, and vertical members are made to face each other on the left and right, and these two sets of joined bodies are connected. It is characterized by being made into a unit by connecting them with materials.

``Function'' The indoor staircase scaffold according to this invention has its inclination angle as a unit adjusted to match the steps of the stairs, and by being lined up on the stairs, it can be easily set on the stairs to create the desired scaffolding. It fulfills the function of

"Example" An example of this invention will be described below based on the drawings.

1 to 3 represent a first embodiment of this invention.

In this embodiment, reference numeral 1 indicates a total of four pillars on the front, rear, left, and right sides. In the side view of FIG. 1, the right side is the front pillar, the left side in the figure is the rear pillar, and The one on the right in the front view of Figure 2 is called the right pedestal, and the one on the left in the figure is called the left pedestal. These four pillars 1 have a joint structure of three pillars 1a, 1b, and 1c on the lower side, middle, and upper side, respectively. The lower pedestal 1a is screwed to the lower end of the intermediate pedestal 1b, and the length of the entire pedestal 1 is adjusted by adjusting the amount of screw engagement. A joint metal fitting 1d is attached to the upper end of the intermediate pillar 1b, and by inserting the joint metal fitting 1d into the lower end of the upper pillar 1c, the intermediate pillar 1b and the upper pillar 1c are connected. .

As shown in FIG. 1, a total of four cross members 2, 3, 4, and 5 are stretched between the front and rear pillars 1. The lower two cross members 2 and 3 respectively connect two members 2a and 2b and 3a and 3b to pins 2c and 3c.
The structure is such that they are bendably connected.
The ends of these two cross members 2 and 3 are connected by pins 2d and 3d between fixed positions of the intermediate pillar 1b in the front and rear pillars 1. These pins 2d and 3d connect the pillar 1 and the cross members 2 and 3 so as to be relatively rotatable. A vertical member 6 is stretched between pins 2c and 3c at the intermediate portions of the cross members 2 and 3. The third horizontal member 4 from the bottom is the front left and right pillars 1.
and between the rear left and right pillars 1, respectively, and between the intermediate connecting members 7, which are stretched between each other. This intermediate connecting member 7 will be described later.
The cross member 4 is removably spanned by hooks 4a provided at both ends of the cross member 4 being hooked onto the intermediate connecting member 7 from above. By this hook 4a, the pillar 1 and the cross member 4 are coupled so as to be relatively rotatable. Moreover, on this horizontal member 4, a non-slip member 4b for a scaffolding board is attached. Top horizontal member 5
is spanned between the upper pillars 1c of the pillar 1 by means of pins 5a, and the joints thereof are relatively rotatable. This uppermost horizontal member 5 serves as a handrail frame.

In this way, a total of four cross members 2, 3, 4, and 5 are spanned between the front and rear pillars 1, and these constitute so-called parallel links. Therefore,
The inclination angles of the cross members 2, 3, 4, and 5 change depending on the relative rotation at the joints with the pillars 1 while keeping the front and rear pillars 1 parallel to each other. Such parallel links are fixed by an angle adjustment mechanism. In this embodiment, the front and rear tension members 8
It is fixed by a and 8b. These tendons 8
a, 8b each has a turnbuckle 8c, and its length can be adjusted. The front tension member 8a is connected to the pin 3c in the middle of the cross member 3 and the front pillar 1.
On the other hand, the tension member 8b on the rear side is stretched horizontally between the pin 3c at the intermediate portion of the cross member 3 and the pillar 1 on the rear side. The parallel links are fixed by the tension of these tension members 8a and 8b.

In this way, the front and rear pillars 1, cross members 2, 3,
4, 5, the vertical members 6, and the tension members 8a, 8b, the structure consists of an intermediate connecting member 7, a lower connecting member 9, and an upper connecting member 10, in which similar members are lined up on the left and right and are brought forward. They are connected and made into a unit. A total of two lower connecting members 9 are strung across, one between the intermediate pillars 1b of the front left and right pillars 1 and the rear left and right pillars 1. The intermediate connecting members 7 serve as scaffold board supporting members, and two intermediate connecting members 7, one each extending between the intermediate pillars 1b of the front left and right pillars 1 and the rear left and right pillars 1, are provided. The upper connecting member 10 connects the upper pillars 1 in the front left and right pillars 1 and the rear left and right pillars 1.
A total of two wires are strung across, one between each other.
The upper connecting member 10 is stretched across as necessary to form a handrail frame. A ramp 11 is spanned between the intermediate connecting member 7 and the lower connecting member 9 on the front side.

Therefore, when using such a unitized scaffold, the inclinations of the cross members 2, 3, 4, and 5 are adjusted according to the level of the step, and the front and rear tension members 8a, 8b are connected to the turnbuckles. 8c, thereby fixing the scaffold in the appropriate configuration. A plurality of such scaffolds are arranged consecutively on the stairs. Then, a scaffold board is attached on the intermediate connecting member 7 as a scaffold board support material, and the work is performed on the scaffold board. At that time, the uppermost horizontal member 5 is used as a handrail frame, and the ramp 11 is used when going up and down.

In this embodiment, each pedestal 1 has a structure in which three pedestals 1a, 1b, and 1c are joined together, and the cross members 2 and 3 can be bent at their intermediate portions. , and because the cross members 4 and 5 are removably spanned, it is possible to disassemble the scaffold into smaller pieces as shown in FIG. 3 when the scaffold is removed. That is, the pillar 1 is replaced by the pillars 1a, 1b, 1
In addition to dividing into three parts c, cross members 4, 5 and tension members 8
Remove a and 8b and bend the middle part of the cross members 2 and 3.

Figures 4 to 6 represent a second embodiment of this invention.

In this embodiment, there are four pillars 1 on the front, rear, left and right sides.
It has a structure that can be expanded and contracted by combining the lower pillar 1e and the upper pillar 1f. A plurality of holes are formed in the lower pillar 1e along its longitudinal direction,
By inserting pins 12 into appropriate holes, the length of the pillar 1 can be adjusted. A total of four cross members 13, 14, 15, 16 are stretched between the front and rear pillars 1,
form a parallel link. The lower cross member 13 is removably spanned between the lower pillars 1e. The two central horizontal members 14 and 15 are the upper pillar 1f.
The middle part is bendable. There is a vertical member 17 between the bent parts.
is being passed over. In addition, a pair of pipes 14a and 14b are provided at the bent portion of the cross member 14, and the pair of pipes 14a and 14b face each other when the bent portion is extended.
By passing the pin 14c into the pair of pipes 14a and 14b, the cross member 14 is fixed in a straight line as shown in FIG. A similar pipe 15 is also installed at the bent part of the cross member 15.
A, 15b and pin 15c are provided. The uppermost horizontal member 16 is stretched across as necessary to form a handrail frame.

In this way, a total of four cross members 13, 14, 15, 16 are spanned between the front and rear pillars 1, and these constitute so-called parallel links. Therefore, the inclination angles of the cross members 13, 14, 15, and 16 change depending on the relative rotation at the joints with the pillars 1 while keeping the front and rear pillars 1 parallel to each other. Such parallel links are fixed by an angle adjustment mechanism. In this example,
It is fixed by a telescoping diagonal member 18. The length of the diagonal member 18 itself can be adjusted by changing the position of the pin connection between the two members 18a and 18b. By tensioning the diagonal members 17, the parallel links are fixed.

In this way, the front and rear pillars 1, cross members 13, 1
4, 15, 16, vertical members 17, and diagonal members 18, similar members are lined up on the left and right and connected by a total of four connecting members 18, 19, 20, 21 to form a unit. has been made into The lower connecting members 18 are stretched between the lower pillars 1e of the front left and right pillars 1 and the lower pillars 1e of the rear left and right pillars 1 in total, and the other connecting members 19, 20, 21 are connected to the front side. Two of the intermediate pillars 1e in the left and right pillars 1 and the rear left and right pillars 1e are strung across, six in total. The uppermost connecting member 21 is spanned as necessary to form a handrail frame.

Therefore, when using such a unitized scaffold, the length of the diagonal member 18 is adjusted according to the level of the step, thereby fixing the scaffold in a suitable form. A plurality of such scaffolds are arranged consecutively on the stairs, a scaffold board is attached, and work is performed on the scaffold board. The right half of FIG. 5 represents the state when the pedestal 1 is extended to the maximum, and the left half of the figure represents the state when the pedestal 1 is retracted.

In this embodiment, each pillar 1 has a telescopic structure, and the horizontal members 14, 15
can be bent at the middle part, and the cross members 13 and 16 are removably hung over each other, so when the scaffold is removed, it can be made smaller as shown in Figure 6. It is. That is, the lower pillar 1e is retracted into the upper pillar 1f, and the cross members 13, 16, the diagonal member 18, and the pins 14c, 1
5c and bend the middle part of the cross members 14 and 15.

``Effect of the invention'' As explained above, the scaffolding in the stairwell according to this invention has a unit configuration that forms parallel links whose inclination angle can be adjusted, so the inclination angle of the unit can be adjusted to match the steps of the stairs. By doing so, it can be easily set on the stairs and work efficiency is greatly improved.

Furthermore, by using the uppermost horizontal member as a handrail frame, work safety is ensured.

Furthermore, by making the middle part of the cross member bendable, it is possible to reduce the size of the scaffold when it is removed.

[Brief explanation of drawings]

Figures 1 to 3 show the first embodiment of this invention, with Figure 1 being a side view, Figure 2 being a front view, Figure 3 being a state diagram when the scaffolding is removed, and Figures 4 to 6 being The figures show a second embodiment of this invention, with FIG. 4 being a side view, FIG. 5 being a front view, and FIG. 6 being a state diagram when the scaffolding is removed. 1... Pillar, 2, 3, 4, 5; 13, 14, 1
5,16...Horizontal member, 6,17...Vertical member, 7,
9, 10; 18, 19, 20, 21... connecting material,
8a, 8b... tension material (angle adjustment mechanism), 18...
...Diagonal member (angle adjustment mechanism).

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A staircase interior scaffold that is arranged in series on a staircase, with at least two horizontal scaffolds connected between the two front and rear pillars by a relatively rotatable connection. An angle adjustment mechanism is provided at the joint between the pedestal and the cross member to adjust and fix the relative rotation angle of the material, and a relatively rotatable connection is provided between the intermediate parts of the cross member. The vertical members are spanned, and two sets of joined bodies made up of the pillars, horizontal members, angle adjustment mechanism, and vertical members are placed opposite each other on the left and right, and these two sets of joined bodies are connected by a connecting member. Indoor staircase scaffolding characterized by being made into units. (2) The indoor staircase scaffold according to claim 1, wherein the uppermost one of the horizontal members is a handrail frame. (3) The indoor staircase scaffolding according to claim 1 or 2, wherein the horizontal member is bendable at its intermediate portion.