JPH0533620Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial Application Field" The present invention relates to a hanging scaffold for stairs that is used as a finishing scaffold for the back of steps and the upper part of walls of a steel-framed staircase.

``Problems that conventional technology and ideas are trying to solve'' Staircases in steel-framed buildings are narrow and
Due to the special shape of the scaffold, erecting a scaffold that uses normal treads as a reaction force would cause an obstruction to traffic, so a special suspended scaffold has been proposed (Utility Model 1983-190341)
Publication No.).

This suspended scaffolding has locking holes at appropriate locations on the ribs attached to the back of each landing, and engaging pins installed horizontally at the upper end of the hanging frame are engaged with these locking holes to secure the hanging frame. are hung vertically, and arms and slanting cloth pipes are installed on these hanging frames, and cloth boards are placed across them.

However, in this case, locking holes are provided at appropriate locations on the ribs attached to the back surface of each landing, and the hanging frame is hung vertically, which not only imposes positional and dimensional constraints, but also makes assembly difficult. In addition, due to positional and dimensional constraints, it is difficult to use existing building frames, steel scaffolding boards, steel climbing piers, etc., resulting in high costs.

Because the hanging frame cannot be adjusted in height or width, it is not only not possible to adjust the height and width of the scaffold to suit the physique of the worker, but also the height and width of the scaffold cannot be adjusted to suit the condition of the building, which limits its use. Ru.

Because there is no hanging frame in the middle of the stairs, stability and safety are poor.

There are drawbacks such as.

The present invention seeks to eliminate these drawbacks.

"Means for Solving the Problems" In order to achieve the above object, the present invention provides transparency at the intermediate part of the stringers 11 on both sides of the staircase 1, and at the front and rear of the stringers 21 on both sides of the landing 2 of the stairs. Hole 41
At the same time, nuts 42 are welded in accordance with each through hole, round rings 43 are removably screwed onto these nuts from the inside of the stringer, and through holes 411 are bored in these round rings. One end of the angle members 44 of an appropriate length are connected by a bolt/nut 45 through the through hole 441, a clamp 47 is fixed to the other end of each angle member 44, and the hanging frame 3 is attached to each of these clamps. Fasten and hang it vertically.
A feature is that scaffolding members 5 are appropriately attached to these hanging frames 3.

"Function" With the above configuration, the stringers 11 and 21 of the stairs 1 and the landing 2 can be used to make it possible to drill through holes 41 at predetermined intervals that fit into the existing hanging frame 3, and to fit any existing hanging frame 3. Enables use of frame 3.

In addition, there are a plurality of through holes 41 drilled in each of the stringers 11 and 21 in this manner, nuts 42 welded to match these through holes, and round rings 4 screwed onto these nuts.
3. A series of mechanically connected angle members 44 of appropriate lengths connected to these round rings by bolts and nuts 45 with through holes 441 at one end serve as hinges, and the suspension frame 3 is Scaffolding members 5 such as ready-made steel scaffolding boards 52 and steel climbing piers 51 that allow free inclination and are set to predetermined lengths and widths.
enable use.

Furthermore, the height of the clamp 47 fixed to the lower end of each angle member 44 can be adjusted by selecting the clamping position with respect to the hanging frame 3.

"Example" The drawings show an embodiment of the invention.

In the figure, 1 is a staircase, 2 is a landing of the staircase, 11 and 21 are stringers of the staircase and landing,
Reference numeral 3 designates a hanging frame suspended from these stringers using jigs 4, and reference numeral 5 designates a scaffolding member attached to the hanging frame.

The jig 4 is installed in the middle part of the stringers 11 on both sides of the staircase 1, and in the middle part of the stringers 11 on both sides of the landing 2.
2, drill through holes 41 at the front and rear, and insert nuts 4 at the outside of the stringer by placing them in each through hole.
2, screw the round rings 43 onto these nuts from the inside of the stringers, and attach one end of an appropriate length angle member 44 with through holes 441 at both ends to these round rings. They are interconnected by bolts and nuts 45 through holes, that is, hinges are provided to accommodate changes in the internal dimensions of the staircase, and to ensure a finishing distance from the wall. Clamps 47 are fixed to the ends with bolts and nuts 46 through holes, and the hanging frame 3 is connected to these clamps. In addition, round ring 4
Instead of 3, a gusset plate may be used.

The hanging frame 3 is a single pipe 3 in the case of the stairs 1.
1, 31, and 32 are assembled in a U-shape using clamps 33, and both ends are connected to clamps 47 of jigs 4 on both sides. In addition, in the case of the landing 2, U-shaped building frames 34 are arranged facing each other in an inverted position on both sides, and both ends of each are connected to the clamps 47 of the front and rear jigs 4. Become. In addition, instead of the building frame 34, one assembled with a single pipe and a clamp may be used.

The scaffolding member 5 consists of a steel climbing pier 51 and a steel scaffolding board 52, and the scaffolding board 52 is spanned between the opposing building frames 34 forming the hanging frame 3 at the landing 2, and is connected to the climbing pier. 51 spans between the lower scaffolding board 52 and the hanging frame 3 at the middle part of the stairs, and between the hanging frame and the upper scaffolding board 52, respectively. Note that a stair frame may be used instead of the climbing pier 51.

``Effects of the invention'' According to the invention, scaffolding can be easily installed and removed, it does not obstruct traffic, and finishing work behind steps and on the top of walls can be done easily and safely. A through hole 4 for hanging a hanging frame 3 on the stringers 11 and 21 of the stairs 1 and the landing 2
1, the through holes 41 can be easily bored at predetermined intervals that match the existing hanging frame 3, and therefore any existing hanging frame 3 can be used without any problem.

In addition, a plurality of through holes 41 are drilled in each of the stringers 11 and 21, nuts 42 are welded to match these through holes, round rings 43 are screwed onto these nuts, and one end of these round rings is provided with a transparent hole. Bolt through hole 441
Since a series of mechanically connected angle members 44 of appropriate length linked by nuts 45 serve as a hinge, the suspension frame 3 can be tilted freely on both sides, and therefore can be adjusted to a predetermined length. - Scaffolding members 5 such as a steel scaffolding board 52, a steel climbing pier 51, etc., which are set to the width, can be used as desired.

Furthermore, the clamp 47 fixed to the lower end of each angle member 44 allows the fastening position to be arbitrarily selected with respect to the hanging frame 3, and therefore the height can be freely adjusted.

Therefore, unlike conventional methods, installation and assembly are not subject to positional and dimensional restrictions, and assembly is easy, and existing building frames, steel scaffolding boards, steel climbing piers, etc. can be used effectively. In addition, the height and width of the hanging frame can be easily adjusted, and the height and width of the scaffold can be adjusted to suit the physique of the worker or the building situation. The use can be expanded, and since a hanging frame is provided in the middle of the stairs, stability and safety can be improved.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a cutaway front view, and FIG. 3 is an enlarged cutaway side view of the main parts. 1...Stairs, 2...Landing, 3...Hanging frame, 4
... jig, 5 ... scaffolding member, 11, 21 ... stringer, 31, 32 ... single pipe, 33 ... clamp,
34...Building frame, 41...Through hole, 42...Natsuto,
43...Round ring, 44...Angle material, 45,46
...Bolt/Nut, 47...Clamp, 51...
...Climbing pier, 52...Scaffolding board, 441...Through hole.

Claims (1)

[Scope of utility model registration request] Holes 41 are drilled in the middle of the stringers 11 on both sides of the staircase 1 and at the front and back of the stringers 21 on both sides of the landing 2 of the stairs, and nuts 42 are welded to each hole. Round rings 43 are removably screwed onto these nuts from the inside of the stringers, and one end of an angle member 44 of an appropriate length having a through hole 411 is inserted into each of these round rings through the through hole 441. They are connected by bolts and nuts 45, and a clamp 47 is fixed to the other end of each angle member 44, and hanging frames 3 are fastened to these clamps and hung vertically, and scaffolding members 5 are appropriately attached to these hanging frames 3. A hanging scaffold for stairs characterized by being installed.