JPH0315714Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to an improvement of a simple spring type temporary scaffolding.

<Conventional technology and its problems> Temporary scaffolding is generally known, which is attached to the waist wall of a building in order to replace window frames or paint the exterior wall. In the conventional so-called spring-type product that can be installed, the scaffold body is installed transversely on the upper surface of the waist wall, is pressed and fixed to the waist wall from the indoor side using tightening jacks, and then attached to a safety pole that is separately set up indoors. The main body of the scaffold is fastened with fastening metal fittings, and the pole is fixed to the ceiling of the room in a tensioned state.

In other words, according to the structure of the conventional product, the tread of the scaffold body is at the same height as the waist wall, and the worker stands on the tread from the outdoor side. A special safety pole must be erected on the indoor side in order to prevent the balance action and provide a counter-stretching force to the worker's load. Therefore, the overall mechanism is not only complicated, large and heavy, but also the assembly and installation work at the site is extremely complicated.

<Means for solving the problem> The present invention is intended to solve the above problem, and for this purpose, the structure includes a support that is applied from the outdoor side to the waist wall of the existing building, and the upper position of the support. A locking bar is attached to the column and extends almost horizontally from the column to the inside of the room so as to straddle the waist wall. A pair of left and right scaffolding bodies is formed by supporting bars extending almost horizontally from the pillars to the opposite indoor side, and clamp plates hanging approximately parallel to the pillars are attached to the protruding tips of the locking bars in the front and rear sides. In addition to assembling the clamp plate so that its mounting position can be adjusted freely in the vertical direction, an adjustment screw rod that presses the waist wall from the indoor side is attached to the hanging end of the clamp plate so that it can also be moved back and forth in the front and back directions. A handrail frame is removably fixed upright at the tip, a pair of left and right handrail frames are connected and integrated by a required number of connecting bars, and a footboard is placed on the support bar from above. That is.

<Example> Hereinafter, the specific configuration of the present invention will be described in detail based on the illustrated example. In Figures 1 to 8 showing the assembled state of the temporary scaffold, A collectively refers to the pair of left and right scaffold bodies. Each of them is a waist wall M of the existing building.
A support post 11 is applied from the outside of the room, and a locking bar 12 extends from the top of the support post 11 toward the inside of the room in a substantially horizontal state so as to straddle the waist wall M.
and a support bar 13 extending from the bottom of the support 11 toward the opposite indoor side in a nearly horizontal position on which a worker can ride stably.When viewed from the left and right sides, the overall Almost "〓"
shaped into a mold.

The support 11 is made of a hollow square metal pipe with a certain height dimension, and the locking bar 12 is made of a hollow square metal pipe with a certain length larger than the thickness of the waist wall M. . 14 is the locking bar 1
A pair of corner reinforcing plates facing each other are welded to the base ends of the supporting columns 11 and 14, each having a substantially right-angled triangular shape. The support column 11 and the locking bar 1 are connected by a plurality of penetrating bolts 15.
2 are detachably assembled and fixed. 16 is a nut for tightening the bolt 15.

17 is a column 11 extending from the protruding tip of the locking bar 12.
The clamp plate hangs down almost parallel to the locking bar 12, and when viewed from the front and rear directions, it has an almost inverted U-shape. The locking bar 17 and the locking bar 12 are also removably assembled and fixed by a plurality of bolts 18 passing through the locking bar 12. In that case, the locking bar 12 has a receiving hole 19 for the bolt 18.
A large number of openings are arranged in the longitudinal direction (back and forth direction), and by appropriately replacing bolts 18 to the receiving holes 19, the mounting position of the clamp plate 17 can be adjusted according to changes in the thickness of the waist wall M. It's becoming like that. 20 indicates a nut for tightening the bolt 18.

Further, reference numeral 21 is a reinforcing rib wall welded to the inside of the inverted U-shape of the clamp plate 17, and its flat wall face correctly faces that of the waist wall M. That is, by providing the rib wall 21, the clamp plate 17 has an H-shape when viewed from below. Reference numeral 22 designates an adjusting screw rod that is located at the hanging tip of the clamp plate 17 and is held horizontally through the rib wall 21 of the clamp plate 17. It can be rotated freely forward and backward.

Reference numeral 24 denotes a press ring pivotally attached to the front end of the adjusting screw rod 22 so as to be able to freely move, and as is clear from FIG. An elastic seat 25 consisting of the above is fitted and integrated. By rotating the adjusting screw rod 22 and moving it forward and backward with respect to the waist wall M, the elastic seat 25 at the front end thereof can be pressed against the waist wall M.

26 is a square shaft formed in the neck of the adjustment screw rod 22, and a through hole 27 is further provided in the square shaft 26.
The adjustment screw rod 22 can also be opened by selecting either the square shaft 26 or the through hole 27 and locking various tools that fit there.
can be rotated without any trouble. that time,
Since the pressing ring 24 with the elastic seat 25 is adapted to perform a free movement independently of the adjusting screw rod 22, it is possible to effectively prevent the elastic seat 25 from being worn out during the pressing and fixing process. It is.

On the other hand, the support bar 13 of the scaffold main body A is made of a hollow metal round pipe material, and by branching into two forks from the middle, it can be stably assembled to the pillar 11 at two points at its base end. It is fixed. Reference numeral 28 designates a plurality of bolts that are inserted into and removed from the pillar 11 and the support bar 13 for this purpose.
It is tightened and fixed with a nut 29.

In that case, a large number of bolt receiving holes 30 are also provided at the lower part of the column 11 along the height direction.
Since the openings are arranged, the installation height of the support bar 13 can be adjusted by replacing the bolts 28 therewith. However, the support bar 1
3 is necessarily mounted at a lower position and lower than the locking bar 12, and a certain height difference H is provided between the two bars 12 and 13. In other words, the receiving hole 30 for the bolt 28
are concentrated at the lower part of the support column 11, and a large number of them are arranged with openings at regular intervals.

Reference numeral 31 denotes a step board placed and set from above between the support bars 13 of the pair of left and right scaffold bodies A, and is made of a metal plate such as punched metal with appropriate anti-slip properties, as shown in Fig. 11. It is removably secured to the support bar 13 by locking hooks 32 projecting from both ends of the support bar 13 to prevent it from shifting or falling off. Reference numeral 33 denotes a handrail frame receiving cylinder made of a hollow metal round pipe welded vertically to the protruding tip of the support bar 13, and 34 and 35 also vertically extend to the tip and base end of the support bar 13. A pair of front and rear groove rails are welded together, and a separate groove rail 36 having the same cross-sectional shape is arranged on the circumferential surface of the handrail frame receiving cylinder 33 so as to be orthogonal to the groove rails 34 and 35 when viewed from above. It is welded and integrated under the relationship.

Then, a side enclosure plate 37 made of a metal plate is dropped from above into the groove rails 34 and 35 facing each other as a pair of front and rear, so that the above-mentioned tread plate 3
1 is also regulated to be unable to float. In addition, front shroud plates 38 are similarly sunk into the other groove rails 36 over the pair of left and right sides of the scaffold body A. Of course, both of the shrouding plates 37 and 38 can be freely removed upwards.

Needless to say, the handrail frame B is a pair of right and left corresponding to the scaffold main body A, and is made of a hollow metal round pipe material, and its support portion 39 can be freely inserted and removed from above into the handrail frame receiving cylinder 33 of the support bar 13. It is lowered and assembled and fixed with a skewer pin 40. As shown in FIG. 6, the skewer pin 40 is connected and held in advance to the receiving cylinder 33 by a chain 41 of a certain length, and penetrates into the receiving cylinder 33 and the support section 39 of the handrail frame B. After it is bent, a bending operation is performed from the middle to prevent it from accidentally slipping out.

Reference numeral 42 denotes a U-shaped enclosure frame welded to the upper half of the support column 39, and a side cover 43 made of a flexible membrane material such as a sheet or net, or a rigid panel material is pasted to this frame. It will be done. Further, a front cover 44 made of a similar material is also stretched between the left and right sides of the support columns 39 in the handrail frame B.

Furthermore, 45 and 46 are a pair of upper and lower connecting bars that connect and hold both the support columns 39, and in particular, the upper connecting bar 45 also functions as a handrail, and both left and right ends of the upper connecting bar 45 are connected to each other from above. Also, both left and right ends of the lower connecting bar 46 are provided with locking pins 47 and 48 that protrude from the front of the support column 39, respectively.
It is designed to be inserted removably into the body. In that case, both the locking pins 47 and 48 are connected to the stopper 4.
9,50, and its stopper is 49,5
Since the connecting bars 45, 46 are always maintained in a resiliently biased state capable of locking the connecting bars 45, 46, there is no possibility that the connecting bars 45, 46 will accidentally fall off after they are locked.

In addition, by attaching a plurality of temporary scaffolds having the above configuration to the waist wall M of the building in a parallel state, and placing one elongated footboard 31 common to the plurality of temporary scaffolds, the scaffolding can be It can be used as an addition, so to speak. Also, in the figure, the footboard 31, connecting bars 45, 46, and shroud plates 37, 3
8, etc. are made in advance to a fixed width dimension, but if you set those dimensions so that they can be expanded or contracted by, for example, replacing the connecting pin 51 as shown in Fig. 14. For example, it is also possible to change the unit width of the temporary scaffold.

<Function> To install and use the scaffold configured as described above, as shown in Figs. 9 to 13, the middle pillars 11 and support bars 13 of the scaffold body A are taken out from inside the existing building, and The support 11 is applied to the outer wall surface of the waist wall M, and the locking bar 12 protruding from the support 11 toward the indoor side is correctly straddled so as to cross the upper surface of the waist wall M, and is hung from there. Rotate the adjusting screw rod 22 of the clamp plate 17,
The elastic seat 25 of the pressing ring 24 is pressed against the inner wall surface of the waist wall M, and the support 11 and the adjustment screw rod 22 of the clamp plate 17 are used to securely install the pressure ring 24 so as to press it against the waist wall M.

At that time, in order to prevent damage to the surface of the waist wall M, a required number of battens a are placed between the front and back of the waist wall M and the support 11, and the waist wall M and the locking bar 12 are Also install the required number of batten b between the upper and lower parts.
Insert and set. In addition, in order to cope with the fact that the thickness of the waist wall M changes depending on the building, firstly, the mounting position of the clamp plate 17 hanging from the locking bar 12 is adjusted by moving in the front-rear direction, and then Immediate response is achieved by moving the adjustment screw rod 22 forward and backward in the same way as for secondary fine adjustment.

After that, the support bar 13 of the scaffold body A
The tread 31, connecting bars 45, 46, handrail frame B, etc. are all assembled and integrated, and the author stands on the tread 31 and repairs the windows of the existing building from outside, replaces the sash, and paints the exterior wall. , and perform other tasks. At that time, the support bar 13 on which the footboard 31 is placed is a certain step H higher than the locking bar 12 that is locked across the waist wall M.
However, even if the installation mode is limited to fixing the waist wall M by clamping the adjustment screw rod 22 of the clamp plate 17 on the locking bar 12 and the support 11, the temporary installation will not be possible. As the scaffolding acts as a balance using the upper surface of the waist wall M as a fulcrum, there is no risk of instability.

As is clear from the above description, when the temporary scaffolding is to be transported or stored, all of its component parts can be disassembled into small and compact pieces.

<Effects of the invention> In summary, the simple spring-out type temporary scaffolding according to the invention has a support 11 that contacts the waist wall M of the existing building from the outdoor side, and is assembled at the upper position of the support 11. A locking bar 12 extends almost horizontally from the pillar 11 toward the indoor side so as to straddle the waist wall M.
Similarly, a support bar 1 is attached to the lower part of the column 11 in a state that is always lower than the locking bar 12, and extends from the column 11 toward the opposite outdoor side in a substantially horizontal manner.
3 to form a pair of left and right scaffold bodies A, and a clamp plate 17 hanging from the protruding tip of the locking bar 12 substantially parallel to the column 11 is assembled so that its mounting position along the front and back direction can be freely adjusted. Along with attaching
An adjustment screw rod 22 that presses the waist wall M from the indoor side is attached to the hanging end of the clamp plate 17 so as to be able to move forward and backward, while a handrail frame B is attached to and removed from the protruding end of the support bar 13. Because of the configuration in which the handrail frame B is freely erected and fixed, the left and right pairs of the handrail frame B are connected and integrated by the required number of connecting bars 45 and 46, and the footboard 31 is placed on the support bar 13 from above. This has the effect of completely eliminating the problems of the prior art mentioned at the beginning.

In other words, it goes without saying that the scaffold body A can be easily and securely attached to the waist wall M from the indoor side of the building, but once it is installed and in use, the load of the worker on the scaffold body A can be easily and securely attached. Since the support bar 13 that carries the load is always lower than the locking bar 12 that straddles the upper surface of the waist wall M by a certain step H, it is assembled at the lower position of the column 11. Coupled with the fact that the waist wall M is pressed from the indoor side by the adjustment screw rod 22 of the clamp plate 17, the above-mentioned balancing action does not occur at all, and it is always held in a stable and solid fixed state. Therefore, there is no need to construct a separate tensioning member such as a safety pole inside the room. Although it is easy to work with on-site, excellent installation conditions can be obtained.

Furthermore, if the front end of the adjusting screw rod 22 is formed as a freely movable press ring 24 with an elastic seat 25 as in the illustrated embodiment, the loose movement of the press ring 24 will prevent the elastic seat 25 from fraying. While preventing this, the adjusting screw rod 22 can be rotated smoothly and easily, and the waist wall M will not be damaged.

Furthermore, if two types, a square shaft 26 and a through hole 27, are provided at the neck of the adjustment screw rod 22, there will be no restrictions on the tools necessary for the rotation operation, and various tools can be used freely. This means that rotational operation can be performed reliably and stably, which is even more beneficial.

[Brief explanation of the drawing]

Figure 1 is a side view showing the assembled state of the scaffolding body and handrail frame in the present invention, Figures 2 and 3 are a front view and plan view of Figure 1, and Figures 4 to 6 are - of Figure 1.
7 is a partially cutaway sectional view taken along the - line in FIG. 5, and FIG. 8 is an enlarged sectional view taken along the - line in FIG. Figures 9 and 10 are front and side views showing the state of use of the present invention, Figure 11 is a partially enlarged cross-sectional view taken along line XI-XI in Figure 10, and Figure 12 is a view taken from XII-XII in Figure 9.
A cross-sectional view along the line, Fig. 13 is - of Fig. 10.
A sectional view taken along the line, and FIG. 14 is a front view of a modification corresponding to FIG. 9. 11... Support column, 12... Locking bar, 13... Support bar, 17... Clamp plate, 22... Adjustment screw rod, 24... Pressing ring, 25... Elastic seat, 26...
Square shaft, 27...Through hole, 31...Treadboard, 37,3
8... Shrouding plate, 45, 46... Connection bar, A...
Scaffolding body, B... Handrail frame, H... Height difference, M
……Spandrel wall.

Claims (1)

[Claims for Utility Model Registration] 1. A pillar 11 that is applied from the outdoor side to the waist wall M of an existing building; A locking bar 12 that extends inward in a substantially horizontal manner, and a locking bar 12 that is also installed at a lower position of the support column 11 in a state that is always lower than the locking bar 12, so that the support column 11
A pair of left and right scaffold bodies A are formed by a support bar 13 extending almost horizontally from the support bar 13 toward the opposite outdoor side, and a clamp plate 17 hanging approximately parallel to the support column 11 to the protruding tip of the locking bar 12. is assembled so that its mounting position along the front-back direction can be freely adjusted, and an adjustment screw rod 22 for pressing the waist wall M from the indoor side is attached to the hanging tip of the clamp plate 17 so that it can also be moved back and forth in the front-back direction. On the other hand, the handrail frame B is attached to the protruding tip of the support bar 13.
is detachably fixed in an upright position, and the pair of left and right sides of the handrail frame B are connected and integrated by a required number of connecting bars 45 and 46, and the footboard 31 is placed on the support bar 13 from above. A simple spring-type temporary scaffold. 2. Request for registration of a utility model characterized in that the front end of the adjusting screw rod 22 is formed as a freely movable press ring 24 with an elastic seat 25, and the neck of the adjusting screw rod 22 is also formed as a square shaft 26 with a through hole 27. Within the scope of , simple spring-type temporary scaffolding as described in item 1. 3 Support bar 13 for support column 11 of scaffold main body A
A simple spring-out type temporary scaffold according to claim 1 of the registered utility model claim, characterized in that the mounting height of the scaffolding can be adjusted by replacing the mounting bolts 28.