JPH0568589B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a joint structure for a construction scaffolding device used mainly in the construction or repair of multi-story structures.

(Prior Art) Conventional scaffolding devices used in the construction or repair of high-rise housing, etc. are constructed by combining logs with wire, or by building a unit frame made of metal pipes in the vertical and horizontal directions. It is constructed by adding and connecting.

(Problem to be Solved by the Invention) Therefore, in the case of high-rise housing as described above, it takes a considerable number of days and workers just to erect the scaffolding and to remove the scaffolding after construction or repair of the high-rise housing. The problem was that the scaffolding costs were added to the construction and repair costs, making the construction costs high.

Therefore, there is a need for a collapsible scaffolding device that can be constructed and removed in a short period of time. The present invention aims to provide a joint structure useful for such collapsible scaffolding devices.

(Means for Solving the Problems) The present invention is a joint structure for a scaffolding device that is used by erecting scaffold boards in multiple stages above and below between building frames installed in parallel, and in which the above-mentioned building frames are In an upper pedestal and a lower pedestal that are configured of pedestals and are vertically adjacent to each other, a joint pin is provided protruding from either the lower end opening of the upper pedestal or the upper end opening of the lower pedestal, and Fitting the pillar opening into the joint pin,
The joint bracket is configured to be removable and to receive a vertical load at the joint surface of the upper and lower pillars, and further includes a joint bracket that extends laterally at the lower end of the upper pillar and the upper end of the lower pillar. are fixed respectively, and the tips of these joint brackets are connected by a fulcrum shaft at a position shifted in the protruding direction of the joint pin from the joint surface of the upper and lower pillars, and the upper and lower pillars are connected to this fulcrum. It features a joint structure for architectural scaffolding equipment that can be bent around an axis.

(Function) According to the present invention, since the plurality of upper and lower pillars constituting the building frame are mutually bendable, the building frame can be vertically folded or extended with each pillar as a unit. In the extended state, the building frame can be locked in a vertically straight state (the construction state of the scaffolding device) using a locking means using a joint pin.
Moreover, in the locked state, the vertical load of the building frame is supported by the joint surfaces of the upper and lower pillars, and is less likely to act on the joint bracket connecting pin of the joint device, so that the connecting pin is less likely to be damaged. In addition, the fulcrum shaft that pivotally connects the brackets of the upper and lower pillars to each other is located at a position shifted from the joint surface of the upper and lower pillars in the direction in which the joint pin protrudes, so when the upper and lower pillars bend toward each other, it is necessary to The open end of the pedestal moves upward in the axial direction of the pedestal by the amount of displacement between the joint surface and the fulcrum axis bending, and continuously bends around the fulcrum axis, allowing for smooth removal from the joint pin. Furthermore, when the opening end of the other pillar rotates to the distal end surface of the joint pin when fitting to the joint pin, the center of the opening becomes extremely close to the axis of the joint pin, and from that state Furthermore, while continuously rotating and standing up, fitting to the joint pin is performed smoothly and accurately.

(Example) Hereinafter, details of an example of the present invention will be explained using the drawings. As shown in FIG. 1, in the scaffolding device in which the joint structure of the present invention is used, building frames 1 are arranged side by side at regular intervals, the upper ends of these building frames 1 are connected to the horizontal frame 2 for upper interval regulation, and the lower ends is connected to the horizontal frame 3 for regulating the lower spacing, and scaffolding boards 4 are erected in multiple stages vertically between these building frames, and in the three-dimensional construction state shown by the solid line in Figure 1, the
The braces 5 are connected in a letter shape.

Each building frame 1 is constructed by connecting a plurality of upper and lower pillars 6, and the upper and lower pillars are connected to each other by arrows A in FIG.
At the position shown in FIG. And when folding, use the above brace 5
Remove the locks from each joint device 7 and remove the building frame 1.
By folding each pillar 6, the entire scaffolding device can be folded downward as shown by the chain line in FIG.

The pillar structure of the building frame 1 is a gate-shaped pillar structure with two front and rear pillars as shown in FIGS. are connected. The support rod 8 also serves to engage the end of the scaffold board 4 with a hook fitting. That is, as shown in FIGS. 4 and 5, a pair of hook fittings 9 and 10 are attached to both ends of the scaffold board 4, and the hook fittings 9 and 10 are engaged with the support rods 8 to secure the building frame. A scaffold board 4 is erected between them. Further, a stopper 12 is attached to the hook fittings 9 and 10, and the stopper 12 is opened and closed using a pin 11 as a fulcrum. After the stopper 12 is rotated from the above-mentioned engaged state to the lower side of the support rod 8, the tip of the stopper 12 is fixed to the hook fitting by the stopper pin 13. 9 and 10, there is no danger of the hook fittings 9 and 10 accidentally coming off from the support rod 8. Since the hook fittings 9 and 10 are engaged with the support rod 8 in such a manner that they can rotate freely relative to each other, when the scaffolding device is extended and folded, the scaffolding board 4 follows these movements while remaining in a horizontally parallel position. .

Incidentally, since the hook metal fittings of the scaffolding plates 4, 4 on both sides are engaged with one support rod 8 as shown in FIG.
The positions of the right hook 10 and the left hook 9 of the scaffold board 4 are shifted so that they do not interfere at the same location. Further, on the upper surface of the scaffolding board 4, protrusions 14 to prevent slipping, punch holes for weight reduction, etc. are appropriately provided.

Next, embodiments of the above-mentioned joint device for the pedestal 6, which is the essential part of the present invention, will be explained by dividing it into a first and a second embodiment structure.

First Embodiment In the joint device 7 having the structure of the first embodiment shown in FIGS. 7 to 9, among the pillars to be connected by the joint device, the upper pillar is 6a, and the lower pillar is 6b.
In this case, each pedestal is composed of a metal pipe of the same diameter, and a joint pin 1 is attached to the upper end of the lower pedestal 6b.
5 is fitted and fixed in a state in which the head protrudes by a predetermined amount. A collar 17 is fitted and integrated with the joint pin 15, and the collar 17 is joined to the upper end of the lower pillar 6b to position the joint pin 15.

Further, a joint bracket 18 is fixed to the lower pillar 6b by sandwiching the lower part of the joint pin 15, and correspondingly, a joint bracket 19 is also fixed to the upper pillar 6a, and both brackets 18, 19 are fixed. are extended in opposite directions, and the two extending portions are overlapped and connected by a fulcrum shaft (bolt/nut) 20, and the fulcrum shaft 2
A joint device 7 is constructed in which both pillars 6a and 6b can be freely bent around 0. Each joint bracket 18, 19 is attached to the pedestal 6 with rivets 21, 22.
a, 6b, of which rivets 21
serves to fix the joint pin 15 to the lower pillar 6b. In this joint device 7, when both the pillars 6a and 6b are extended in a straight line as shown in FIGS. 7 and 8, the upper pillar 6a fits into the joint pin 15 of the lower pillar 6b, and when bent, as shown in FIG. The upper pillar 6a is detached from the joint pin 15 as shown in FIG. Therefore, the position of the fulcrum shaft 20 is adjusted between the upper and lower pillars 6a and 6a so that the lower end opening of the upper pillar 6a can accurately fit into and disengage from the joint pin 15.
It is arranged at a position shifted from the joint surface 23 of b in the protruding direction of the joint pin 15.

The fitting structure between the joint pin 15 and the upper pillar 6a constitutes a locking means 16, and both pillars 6a and 6b
Lock it with the joint pin 15 while extending it in a straight line. In addition, at this time, the vertical load of the building frame from the upper pedestal 6a side is mainly applied to the lower pedestal 6b through the joint surface 23 between the upper pedestal 6a and the lower pedestal 6b.
This prevents the fulcrum shaft 20 from being damaged.

It goes without saying that when the building frame 1 is folded by the joint device 7, the folding direction of the joint device 7 is reversed between the upper and lower joint devices, as shown in FIG.

Second Embodiment FIGS. 10 to 12 show a second embodiment of the coupling device. This joint device 35 has a pair of upper and lower joint brackets 36, 3 having a similar shape to that of the first embodiment.
7 is attached to the pillars 6a and 6b, respectively, by overlapping the parts extending from the base side to attach the bolts.
Metal sleeves 39, 40 are connected by a fulcrum shaft 38 such as a nut, and have the same diameter as the pillars 6a, 6b at the base of both joint brackets 36, 37.
By sandwiching and fixing and connecting the upper metal sleeve 39 to the upper pillar 6a and the lower metal sleeve 40 to the lower pillar 6b, both pillars 6a and 6b can bend freely around the fulcrum shaft 38. has been done.

A joint pin 41 that protrudes largely upward is attached to the upper metal sleeve 39, and when this is inserted into the upper pillar 6a, the joint pin 41 and the upper pillar 6a are connected to the bolt/nut 42.
is fixed. Similarly, a joint pin 43 that protrudes downward is attached to the lower metal sleeve 40, and when this is inserted into the lower pillar 6b, the joint pin 43 and the lower pillar 6b are connected to each other by the bolt.
It is fixed with a nut 44.

Further, the lower end of the upper joint pin 41 partially protrudes below the metal sleeve 39, and this protruding head 45 protrudes into the lower metal sleeve 40 when the pillars 6a, 6b are extended vertically in a straight line. When fitted together, the linear posture of both pillars 6a and 6b is locked. When the pillars 6a, 6b are bent, the projecting head 45 is detached from the lower metal sleeve 40 as shown in FIG. In other words, it is the locking means 46.

In this joint device 35, as in the first embodiment, the position of the fulcrum shaft 38 is shifted in the protruding direction of the joint pin 41 with respect to the joint surface 47 of both metal sleeves 39, 40, as shown in d of FIG. It has been placed. Furthermore, when both pillars 6a and 6b are extended in a straight line and locked with the protruding head 45 of the joint pin 41, the vertical load of the building frame from the upper pillar 6a side is mainly applied to the lower pillar 6b through the metal sleeves 39 and 40. Of course, this is also the case.

Note that 48 indicates a rivet pin that integrates the joint bracket 36, metal sleeve 39, and joint pin 41, and 49 indicates a rivet pin that integrates the joint bracket 37, metal sleeve 40, and joint pin 43.

According to the joint device 35 of this second embodiment, the joint brackets 36, 37, the metal sleeve 3
If the joint pins 41 and 43 are assembled separately in advance, the joint pins 42 and 44 can be easily attached to or removed from the pillars 6a and 6b using bolts and nuts on site, making it easier to manufacture or assemble the scaffolding device. Work becomes extremely easy.

13 and 14 show a horizontal frame 3 for regulating lower spacing for connecting and supporting the lower end of the building frame 1,
This horizontal frame 3 connects parallel horizontal rods 24 and 25 at the front and rear with a front and rear rod 26, and connecting brackets 27 are fixed to respective parts where the building frame 1 is to be connected. The support rod at the bottom of the building frame is fitted into the connecting bracket 27, and a restraining metal fitting 28 is placed over it to prevent the support rod from slipping out, and the restraining metal fitting 28 and the bracket 27 are connected with bolts and nuts 29, for example. I'm trying to fix it.

Furthermore, a plurality of jacking devices 30 are attached to the lower space regulating horizontal frame 3, so that the scaffolding device can be maintained in a horizontal position at the site where it is used. This jacking device 30 is shown in the figure as one in which a threaded rod 32 is screwed and inserted into a threaded cylinder 31 fixed to a horizontal rod 25, and the height is changed by vertical movement of the threaded rod 32 using the screw fitting. Alternatively, the jacking device 30 may be attached to the lowermost end of the pillar 6.

Further, the upper spacing regulating horizontal rod 2 corresponding to the lower spacing regulating horizontal frame 3 is not shown since the jacking device 30 is removed from the structure shown in FIGS. 13 and 14.

The mounting structure of the brace 5 to be attached after construction of the scaffolding device is not particularly limited, but the one shown as an example in FIG. Stopper piece 3
4, position the retaining piece 34 in line with the engagement pin 33, and after fitting the end of the brace 5, rotate the retaining piece 34 at 90 degrees as shown in the figure. It is bent to prevent it from coming off.

When the scaffolding device thus configured is not in use, that is, during storage or transportation, the building frame 1 is folded in a zigzag shape using the pillars 6 as basic units by the joint device 7 with the braces 5 removed. At this time, both ends of each scaffold board 4 are engaged with the support rods 8 of each pillar 6 via the hook fittings 9 and 10, so as the building frame 1 is folded, the scaffold boards 4 are also stacked vertically. The scaffolding device as a whole is folded flat. When in use, the scaffolding device is installed at a predetermined position on the construction site, and from a state where the levelness is maintained by the jacking device 30, the scaffolding device is hoisted through the upper spacing regulating horizontal frame 2 by a lifting device such as a winch. As a result, the building frame 1 is extended upward in a straight line, and the upper and lower pillars 6 are unified by the locking means 16. After that, the brace 5 is attached and the construction is completed. Removal of the scaffolding equipment is performed in the reverse order.

In addition, the scaffolding device shall be of a height corresponding to a building of approximately 5.6 stories, and if this is a foldable scaffolding unit and the height of the scaffolding device as a whole is to be increased, multiple scaffolding units may be added upward. It is better to use it as you like. In this unitized structure, the upper and lower horizontal frames 2 and 3 for regulating the distance shown in FIG. 1 are unnecessary because they become an obstacle to adding parts.

(Effects of the Invention) As detailed above, according to the present invention, the building frame has a simple structure that can be folded up and down in multiple stages and extended in a straight line. Since it has a strong structure that can be supported by a surface, it has the advantage that scaffolding equipment using this joint structure can be made inexpensive and durable. Furthermore, the fulcrum shaft that pivotally connects the brackets of the upper and lower pillars to each other is located at a position offset from the joint surface of the upper and lower pillars in the protruding direction of the joint pin, so when bending between the upper and lower pillars, one of the pillars The open end of the other pillar is continuously bent from the joint pin protruding from the joint pin while moving upward in the axial direction of the pillar by the amount of displacement between the joint surface and the fulcrum axis. When the opening end of the other pillar rotates around the fulcrum axis to the tip of the joint pin, the axis of the opening is aligned with the axis of the joint pin. They are brought into a very close state, and from that state they continue to rotate and stand up, and are smoothly and precisely fitted to the joint pin.
Therefore, the work of vertically folding and extending the building frame can be performed automatically and efficiently.

[Brief explanation of the drawing]

Figure 1 is a schematic front view of the scaffolding device, Figure 2 is an enlarged front view of the building frame, Figure 3 is a side view of Figure 2, Figure 4 is a plan view of the scaffolding board, and Figure 5 is the scaffolding board. A front view, FIG. 6 is a perspective view showing the installation state of the scaffolding device, and FIG.
The figure is an enlarged view of the first embodiment of the joint device, FIG. 8 is a side view of FIG. 7, and FIG. 9 is a diagram of the operating state of the joint device.
FIG. 10 is an enlarged view of the second embodiment of the coupling device;
1 is a side view of FIG. 10, FIG. 12 is a diagram of the operating state of the joint device, FIG. 13 is a plan view of the lower space regulating horizontal frame, and FIG. 14 is a front view of FIG. 13. 1... Building frame, 4... Scaffolding board, 6, 6a, 6b...
... Pillar, 7, 35 ... Joint device, 15, 41, 4
3... Joint pin, 16, 46... Locking means, 18, 19, 36, 37... Joint bracket, 20, 38... Fulcrum shaft, 23, 47...
joint.

Claims (1)

[Claims] 1 A joint structure of a scaffolding device in which scaffolding boards are installed in multiple stages above and below between parallel building frames, and the building frame is composed of a plurality of upper and lower pillars, and upper and lower adjacent upper pillars. and the lower pedestal, a joint pin is provided protruding from either the lower end opening of the upper pedestal or the upper end opening of the lower pedestal, and the other pedestal opening can be fitted to and removed from the joint pin. In addition, joint brackets extending laterally are fixed to the lower end of the upper pillar and the upper end of the lower pillar, respectively. At the same time, the tips of these joint brackets are connected by a fulcrum shaft at a position shifted in the protruding direction of the joint pin from the joint surface of the upper and lower pillars, and the upper and lower pillars are centered around this fulcrum shaft. A joint structure for an architectural scaffolding device, characterized in that it is configured to be bendable.