JPS62264257A - Built-up type stepped oblique scaffolding - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to diagonal scaffolding used in places with height differences, and specifically, it is used during construction work to construct buildings with diagonal ceilings such as staircases. Intermediate dance p* from the lower floor for finishing work of the part
Upstairs from the dance floor! Then, place the frame diagonally in a ring or any other location! Concerning diagonal scaffolding used by passing.

Conventional diagonal scaffolding is simply used by placing a scaffolding board across the middle or upper tier of two stepladders and fixing both ends. In such a case, install pedestals at appropriate intervals on the foot surface. Instead of a stepladder, a framework scaffolding assembly is often used. In addition, the middle part of the scaffolding board is supported using pillars or hanging bolts to supplement the strength of the scaffolding board and ensure stability for the workers. .

On the other hand, instead of assembling and configuring each time at such sites, it is known that scaffolding materials are assembled from steel materials. For example, the "movable scaffold" shown in Japanese Utility Model Application Publication No. 52-83517 has a girder frame consisting of a pair of main girders and a cross girder installed at the top of a support column, and a treadle can be removably attached between the main girders. The VC main girder and the side girders parallel to each other work together to hold each tread horizontally according to the slope of the girder frame when the supports are located above and below the stairs.

On the other hand, stairs with variable installation angles are those in which side girders and treads are assembled so that the treads are held horizontally. If the relationship between upper and lower floors is applied to scaffolding, "temporary stairs" can be configured as diagonal scaffolding.

A number of suspended scaffolds and trolley-type mobile scaffolds are known as scaffolds that focus on low angle variation, and all of them employ a mechanism to level the foot surface according to the angle of the stringer.

Problems to be Solved by the Invention Diagonal scaffolding that is used by spanning the top and bottom of stairs, etc., has a temporary slope, and even if it has a fixed crosspiece, it can only serve as an aid when going up and down. Work must be done in stable conditions, which is dangerous for workers and has poor workability. In addition, the intermediate support between the scaffolding blocks the passage below the scaffolding, and the hanging support cannot prevent horizontal sway.

Therefore, scaffold equipment as shown in the prior art is used, but the "movable scaffold" of Utility Model Application Publication No. 52-83517 is bulky as a whole because it is made of frame girders, and the main body is bulky. The girders and side girders have integrity, and the treads are connected to each other by forming parallel links, which can be folded into a flat plate, but assembly and disassembly is not easy. Utility Model Publication No. 52-81727 “
The variable machine R4 of "Temporary Stairs" also has a side girder with parallel links made up of two supports and treads, and is assembled and disassembled using clamps, and the treads are kept horizontal by rotating the clamps. ing. However, in this example, all the equipment is used as temporary materials and assembled each time, which inevitably causes difficulties in assembly accuracy, and there is a high possibility that both stairs and scaffolding pose a danger to workers.

The present invention was developed specifically for the purpose of obtaining diagonal scaffolding suitable for finishing work on diagonal ceilings of staircases at construction sites. It provides scaffolding, has an assembly structure, and is designed so that it can be easily assembled and erected manually at the site.It secures the foot surface horizontally according to the construction slope to form a stable scaffold, and when dismantling, it reduces the volume. The idea was to return to parts that are not bulky, and a pair of side girders were constructed into independent lattice structure beams, parallel links were formed by the lattice members, and step scaffolding was attached and constructed between the lattice members to form an integrated structure. It is characterized by having diagonal scaffolding.

Here, there is an example disclosed in Utility Model Application Publication No. 57-2943 regarding fixing the plates of the stepped scaffold to the horizontal members at both ends, but in this prior art example, the steps corresponding to the angle of the stays are If the board cannot be held horizontally and an approximately horizontal surface is created, it may actually pose a danger to the scaffold. In the present invention, each side girder can be fixed in accordance with the slope of the parallel link by the action of the adjusting members at both ends, and a diagonal scaffold suitable for the purpose is completed.

EXAMPLE The structure of the prefabricated stepped diagonal scaffold of the present invention will be explained in detail based on a specific example.

FIG. 1 shows a typical staircase, and 1 generally shows the diagonal scaffold of the present invention. The diagonal scaffold 1 is supported at a high place by supports 2, 2 at its lower end and upper end.
It is built between the two. 3 is the lower floor of this staircase, 4
is the middle dance floor, 5 is the floor of the upper floor, 6 is the staircase installed between the upper and lower floors, and 7 is the diagonal ceiling above the stairs 6, which is the bottom of the stairs on the upper floor. Each part, including the peripheral wall, has a general structure.

FIG. 2 is a specific pressure surface diagram showing the diagonal scaffold 1 in the direction of the landing 4, and clearly shows that the support 2 is a frame scaffold.

The diagonal scaffolding 1 has a pair of stringers 10.1 on both sides in the slope direction.
A large number of step scaffolding 2 spanned between 0 and stringers 10, 10
It consists of 0. The stringer 1o has the same number of nodes 13 connecting the upper and lower main members 11.12 and a large number of equally spaced (nine in the example) nodes 13 on the main members 11.12 to the opposing relationship of the main members 11.12. The lattice members 14 are pivoted and connected at each node 13 to form one lattice beam.

The structure of the side beam 10 will be explained in more detail with reference to FIG. FIG. 3 shows the main part of the lower end of the stringer 10, and the upper main member 1
1. The lower main member 12 is a steel pipe with a diameter of 4 Z 7 t IJ, and the second tier lattice member 14 is a steel pipe with a diameter of 34 mm. The upper end of the upper main member 11 (Fig. 1) and the lower main member 1
A fixing node 15 is provided at the extension of the lower end of 2,
Other nodes are provided at equal intervals on the upper and lower main members 11 and 12, and the lattice material 14 is spread across the horizontally corresponding nodes (in the diagram) between the upper and lower main members, starting from the one at the bottom. Bolts 16 are attached to both ends of the material 11 and 12 and the grid material 14.
Fixed by pivoting. This allows the parallel main material 11.
12 and parallel grid members 14 constitute a parallelogram link.

Next, an m-joint member 17 is attached to the extended portion between the ninth node 15 and the outermost node 13 of the main member facing therebetween.

This member shown in FIG. 3 is made of 6x50 flat steel, and is inserted between the main member 11 and the grid member 14 at the top, and the bolts 16
A long hole 18 is provided in the central shaft portion of the lower part, and a bolt 19 is slidably mounted at a node 15 to form a triangular truss.

The main material 11 or 12 and the grid material 14 are connected by using a bolt 16 having a diameter of 12 mm, as shown in FIG. 4, and by interposing a spacer made of a steel pipe between the outer peripheral surfaces of both the pipe materials.

A fastener 30 is fixed to the lower end of the upper main member 11.

This anchoring device 30 is a known hook member, and is
A similar anchoring device is used for diagonal scaffolding 1.
It is preferable to fix it to the tip of the lower main member 12 above. As the hook member, a standard product of a frame scaffold board for frame scaffolds can be used.

Next (C setting field 20 & will be explained. As is clear from Fig. 2, a pair of side girders 10 and 10 are constructed such that the lattice members 14 face each other in a T-shape and extend between the upper and lower frame scaffolds in parallel. Ding.

Then, a setting fan 20 is bridged between the facing grid members 14. The setting field 2o has a downward U on its end surface as shown in Figure 4.
Two shaped hooks are fixedly attached to the grid member 14 so as to cover it from the upper surface of the grid member 14, and the setting@20 is supported at both ends.

The setting field 20 of each step can be created by cutting a commonly used long scaffolding board with a length of 24 mm, and the dimension as a tread is usually 240 mm, and the end surface has a curved frame. Weld the hook 21.

Since the setting field 20 is attached to the lattice material 14 attached via a spacer, the outer ends of the seven hooks 21 are also attached to the middle parts of the stringers 10 and 10, and the main members 11 and 12 and the lattice material 14 are connected to each other. Due to the deformation of the parallelogram links, the main members 11, 12 do not come into contact with these members even when they are in the folded state in close proximity.

Function The function of the diagonal scaffold 1 of the present invention will be explained by its usage method. First, one span of the frame scaffolding 2 is installed on the top surface of the lower floor 3 and the top surface of the dance hall 4, and the diagonal scaffolding 1 is placed on the horizontal member 11jJ of the frame scaffolding parallel to the steps of the stairs 6. I will.

Select the diagonal scaffolding 1 that is approximately suitable for the scale of the stairs 6, hook the upper hook 30 of the stringer 10 to the upper framework scaffolding 2, and loosen the upper and lower adjustment members 17 (19t). The lower hook 30t is attached to the lower framework scaffolding 2.

Next, cross the other stringer 10 parallel to the first one,
Adjust the interval to approximately the width of the setting field 200, and
Assemble the hooks 21 between the grid members 14 and 14 of the girders 10 and 10 on both sides. At this time, the levelness of the setting field 20 is in an uncertain position, so check whether the upper part of the front of the step is the upper part or the lower part of the front part is the lower part. The distance is brought closer, and when the front stop is in the position, the adjustment member 17 is moved in parallel to be moved apart, and when the setting field 20 becomes horizontal, the adjustment member 17 is moved.
The sliding movement in the elongated hole 18 is fixed with a bolt 19.

As a result, the triangular truss and each parallelogram link at the end of the stringer 10 are fixed, the stringer 10.degree. 10 is stabilized, and the diagonal scaffold 1 is supported by both framework scaffolds 2 and completed. Of course, after setting the fixed length of the adjusting member 17 of the stringer 10 and ensuring that the setting field 20 is leveled with full temporary support,
The frame legs @2 may be installed and positioned from below.

The diagonal scaffold 1 is thus completed as a suitable scaffold for working on the ceiling 7 or for working above side walls.

The diagonal scaffolding 1 can be dismantled and removed by reversing the above order, but the stringer 10.10 and the numerous setting sites 20 and 71f-
It is possible to move the assembly as it is, or to dismantle the two stringers 10゜10 and each setting place 20 and move them separately, and it is also possible to fold each stringer 10. Therefore, repositioning and moving the diagonal scaffolding 1 can be performed extremely easily. The stringer 10 can be folded as shown in FIG. 5, and the parallelogram links and the triangular truss may substantially eliminate construction space, and the adjustment member 17 can be pivoted to the main member 12. The bolt 19 may be removed from the elongated hole 18. At this time, the main members 11 and 12 are brought close to each other in parallel to the point where their side faces meet, and each grid member 14 comes to have its ends overlapped with the adjacent one, but the grid member 14 is attached to the main member 11 and 12. Since it is a single tube with a relatively small diameter, the volume of the stringer 10 is minimized when it is completely folded down to 70 fc, 1". Moreover, at this time, the setting field 20 can be disassembled even if it is still assembled. Even if it is in this shape, it does not affect the folding of the stringer 10.

Effects of the Invention Since the present invention is constructed as described above and has an effect in use, first, a diagonal scaffold is formed by assembling a setting field using hooks between two side girders and their opposing grid members, and the adjustment By fixing the members, a diagonal scaffold with a horizontal foot surface between supports with different heights can be obtained. At this time, the main parts of the structural members are a pair of side beams that make up the lattice beams, and the scaffolding plates are obtained as horizontal scaffolds formed in steps by engaging hooks, and their assembly requires special technology. without needing,
Engaging and disengaging using the hook is extremely simple. In addition, since the entire structure is an assembly type, it can be erected and dismantled as long as an appropriate support is obtained, making it convenient for moving and replacing as a stair car. are doing.

Furthermore, the one extra fifth scaffold can be made using ordinary materials at hand, and the setting area, hooks, etc. can also be made from repurposed materials.

[Brief explanation of drawings]

The drawings show a preferred embodiment of the present invention, in which Fig. 1 is a side view of the diagonal scaffold of the present invention in use inside a staircase, Fig. 2 is a front view of the same upward slope, and Fig. 3 is a lower end portion. FIG. 4 is a detailed side view of the setting area, and FIG. 5 is a side view showing the stringer in a folded state. 1... Diagonal scaffolding, 2... Support body, framework scaffolding, 3...
・Lower floor, 4... Dance floor, 6... Stairs, 7... Diagonal ceiling, 10... Strings, 11.12... Upper and lower main materials, 13.15... Node, 14... Lattice material, 16.1
9... Bolt, 17... Adjustment member, 18... Long hole, 20... Setting field, 21... Hook, 30... Attachment A, hook. Agent Masao Miyake (1 other person) Figure 4 Figure 5

Claims (2)

[Claims] (1) In diagonal scaffolding used to span between supports with different heights, the main material is two parallel steel pipes, upper and lower, and a number of single pipes are pivoted and connected at equal intervals as a lattice material. At both ends of the girder, attachment devices to the support body are provided, as well as adjustment members that connect the two main members so that the distance between them can be changed and fixed, and a pair of such side girders are arranged facing each other with the lattice material inside. , Hooks fixed to both ends of the stepped scaffolding are attached between each lattice material to removably assemble the stepped scaffolding, and adjustment members are fixed so that the stepped scaffolding is leveled according to the erection angle of the side girder. A prefabricated stepped diagonal scaffold that is characterized by: (2) The diagonal scaffold according to claim 1, wherein the support body with a difference in height is an assembly of frame scaffolds provided at the top and bottom of the stairs, and the anchors at the ends of the stringers are hooks.