JPH0566461B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an assembled scaffold that can be used to assemble a scaffold that a worker can climb up and down in the construction or repair of a building or house.
In particular, the present invention relates to an assembled scaffold characterized in that the support pipe and the scaffold pipe are prevented from falling off easily when assembled, and the support pipe and the scaffold pipe can be easily connected.

[Conventional technology]

Traditionally, when work is performed above and below the ground at construction sites, shipyards, repair shops, etc.
It was customary for work to begin after scaffolding was erected at the work site. For this reason, assembled scaffolding was used in which logs, bamboo, etc. were tied together and stacked one above the other.However, as the scaffolding could not be assembled quickly and the shapes of the materials differ, in recent years metal scaffolding has been used. is beginning to be used. This metal scaffolding uses compliant supports,
By regularly assembling connecting pipes, stepping boards, etc., the scaffolding can be formed by sequentially connecting from the bottom upward to cover the wall of a building or the outer periphery of a house.

In this conventional assembly scaffolding, each member is formed according to standards, so there is no distortion even when stacked one on top of the other, and it is easy to store and remove the materials. . However, in the conventional metal scaffolding, all the parts are assembled in a right angle direction, and its utility value is very high in rectangular buildings etc.
If two walls that are close to each other are bent at an angle other than a right angle, it is not possible to assemble the scaffold by bending it to match the bent wall, and it is necessary to assemble a new scaffold separately. It was something I had to have. This is because in conventional systems, the primary purpose is to assemble each scaffold only in the vertical direction, and it is not possible to connect two vertically assembled scaffolds by setting their vertical surfaces at angles other than right angles. That's because it wasn't the purpose.

For this reason, the applicant of this patent is
We are proposing an assembly scaffold that can connect the left and right scaffolds at an angle other than the right angle when assembling the scaffolds. With this new scaffolding,
An engaging metal fitting with a circular groove is fixed in the middle of the support pipe, and the scaffolding pipe can be fitted from any position in this circular groove. Scaffolding can be assembled sequentially along the shape of a wall.

However, since this newly proposed assembly scaffold has circular grooves,
When a worker on the scaffold vibrates vertically, there is a high possibility that the connection between the support pipe and the scaffold pipe will come loose. In addition, since the circular groove opens upward, if a lump of sand or concrete falls from the wall of a building, etc.
Sediment and cement enter the circular grooves, causing the grooves to become clogged after use, necessitating cleaning and repair work.

[Problem that the invention seeks to solve]

In view of the above-mentioned drawbacks, the present invention has been developed by fixing fixing fittings with a large outer diameter at key points of the support pipes when assembling an assembled scaffold, and pulling the engaging claws of the scaffold pipe onto these fixing fittings. Multiply and connect.
The engaging claw has an upper claw that protrudes upward, and when the sliding metal fitting inserted through the support pipe is lowered toward the engaging claw, the engaging surface formed on the inner circumference of the sliding metal fitting is lowered. will engage the upper nail. In this way, the scaffolding pipe is connected and fixed to the support pipe.

[Means for solving problems]

In view of the above-mentioned drawbacks, the present invention includes a long pipe with a circular cross section arranged slightly vertically, and an annular ring fixed to the outer periphery of the pipe and tapered on the upper surface between the pipe and the outer periphery of the pipe. A sliding fitting is inserted into the pipe so as to be slidable in the length direction of the pipe, and has a tapered annular engagement surface formed on the lower surface thereof with the outer circumference of the pipe. It consists of a support pipe consisting of metal fittings, a long scaffolding pipe arranged somewhat horizontally, and engaging claws that are fixed to both ends of this scaffolding pipe and form upper and lower claws that protrude upward and downward. It is an assembly scaffold consisting of a bracket, and the side surface of the end of each engaging claw is formed into an arc shape so as to have a curved surface that is almost the same as the curved surface of the pipe, and the side surface of the upper claw is formed into an arc shape so as to have a curved surface that is almost the same as the curved surface of the pipe. The lower claw is curved to have a curved surface that is almost the same as the conical curved surface of the mating surface, and the side surface of the lower claw is curved to have a curved surface that is almost the same as the conical curved surface of the hooking surface. After locking the bracket to the pipe by bringing the end side of the interlocking claw into close contact with the side of the pipe and the curved surface of the lower claw against the hooking surface, move the sliding metal fitting along the pipe to engage it. To provide an assembly scaffold characterized in that a bracket is connected to a support pipe by bringing the surface into close contact with the curved surface of the upper claw.

[Effect]

In the present invention, the end surface side of the engaging claw at the tip of the scaffolding pipe is brought into contact with the side surface of the support pipe, and the upper claw of the engaging claw is engaged with the hooking surface formed on the inner peripheral surface of the fixing metal fitting. It is set as. For this purpose, the sliding metal fitting is lifted along the support pipe, the fixed metal fitting and the sliding metal fitting are separated, and the lower claw of the engaging claw is engaged with the hooking surface of the fixed metal fitting to set the position. Thereafter, by moving the sliding fitting downward, the upper claw of the engaging claw is brought into close contact with the engaging surface formed on the inner circumferential surface of the sliding fitting, and the engaging claw is fixed by sandwiching the engaging claw from above and below.
In this way, the support pipe and the bracket can be connected, making the operation extremely simple. In addition, since the sliding bracket is in close contact with the top surface of the fixed bracket,
Since the annular hook surface formed on the inner circumferential surface of the fixture is protected, even if dirt or sand falls from above, it will not enter the hook surface, eliminating the need for cleaning after use.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the assembled scaffold. In this example, the lowest unit of the assembled scaffold will be explained, and includes four vertically erected support pipes 1, four brackets 2 installed between a pair of support pipes 1, and It is composed of four horizontal pipes 3 installed between support pipes 1, and two footboards 4 installed horizontally between opposing brackets 2.

FIG. 2 shows the external appearance of the support pipe 1. As shown in FIG. This prop pipe 1 is a slightly long pipe 5
, a fixing metal fitting 6, a sliding metal fitting 7, and a fall prevention ring 8. An annular fixing fitting 6, which has a disk shape and has an outer diameter larger than the outer diameter of the pipe 5, is fixed to the lower and upper portions of the pipe 5 by welding or the like. A tapered hooking surface 9 is formed on the upper surface of this fixture 6 and is inclined from the outer circumference toward the inner circumference.
This hook surface 9 is formed in a conical shape from the outer periphery toward the side surface of the pipe 5.

A disk-shaped drop-off prevention ring 8 is similarly fixed by welding or the like above the upper fixture 6 at a distance from the fixture 6.

Further, a fall prevention ring is provided between the fixture 6 fixed to the upper side of the pipe 5 and the fixture 6 fixed to the lower side, and between the fixture 6 fixed to the upper side of the pipe 5 and the upper end of the pipe 5. 8, a sliding metal fitting 7 formed in an annular shape by casting or the like is slidably inserted. This sliding fitting 7 has a through hole formed in its center that passes through the pipe 5 vertically.
It is inserted so that it can be freely moved up and down. A tapered engagement surface 10 is formed on the lower surface of the sliding fitting 7 and is inclined from the outer circumference toward the inner circumference. The engagement surface 10 is formed into a skirt-like shape with the diameter increasing downwardly.

Further, a pin hole 11 is opened through the upper part of each sliding metal fitting 7 from its side surface.

Next, as shown in FIG. 3, the bracket 2 is composed of a scaffolding pipe 12 and engaging claws 13 fixed to both ends of the scaffolding pipe 12. This engaging claw 13 includes an upper claw 20 that is oriented perpendicularly to the length direction of the scaffolding pipe 12 and protrudes upward and downward.
and a lower claw 21 are provided. Further, a contact surface 19 hollowed out in an arc shape is formed on the side surface of the tip, and the curved surface of this contact surface 19 is set to be almost the same as the curved surface of the side surface of the pipe 5.
Further, the side surface of the upper claw 20 facing the scaffolding pipe 12 has a conical shape, and the shape of this side surface is made to substantially match the curved surface of the engagement surface 10. The side surface of the lower claw 21 facing the scaffolding pipe 12 has a conical shape,
The shape of this side surface is made to approximately match the curved surface of the hooking surface 9.

This bracket 2 is placed between a pair of support pipes 1 and 1 arranged parallel to each other with an interval between them (in FIG. 1, between a pair of support pipes 1 and 1 located on the right side, It is interposed between a pair of support pipes 1 and 1 located on the left side. Incidentally, engaging claws having a similar shape are also fixed to both ends of each horizontal pipe 3.

Furthermore, each footboard 4 is formed from two parallel pipes 14, a mesh plate 15 fixed between the pipes 14, and hook claws 16 fixed to both ends of each pipe 14. . This footboard 4 is used by a worker who has climbed the scaffolding to walk on, and each hooking claw 16 is formed in a semicircular arc shape opening downward. It is assembled by engaging with the pipe 12 from above. Also, one set of prop pipe 1
There is a gap between the upper sliding fitting 7 of one set (the left-hand group in Figure 1) and the lower sliding fitting 7 of the other group of support pipes 1 (the right-hand group in Figure 1). A connecting rope 17 for reinforcement is connected, and the lower sliding fitting 7 of one set of support pipes 1 (the left set in FIG. 1) connects the support pipes 1 of the other set ( In FIG. 1, a reinforcing connecting cable 17 is connected between the upper sliding fittings 7 of the right-hand group. In this way, the reinforcing stays marked with an X are stretched on the scaffold by a pair of connecting ropes 17.

Next, FIGS. 3 and 4 show the structures of the fixing metal fitting 6 and the sliding metal fitting 7. As shown in FIG.

As described above, the fixing fitting 6 has the pipe 5 penetrated through the center thereof, and a tapered hooking surface 9 that is cone-shaped downward with the pipe 5 at the center is formed at the center of the upper surface. Fixing bracket 6 is pipe 5
is welded to. Therefore, a large-diameter flange-like projection is formed on the outer periphery of the pipe 5 by the fixing fitting 6. A pin hole 18 is opened horizontally on the side surface of the pipe 5 and slightly above the fixing fitting 6. Further, the sliding fitting 7 is formed with an opening that passes through the top and bottom, and the lower surface facing the fixing fitting 6 is tapered so that the inner diameter gradually decreases upward. A skirt-like engagement surface 10 is formed. The depth of this engaging surface 10 is approximately two-thirds of the length of the sliding fitting 7.
A skirt-shaped space formed by the inner circumference of the pipe 5 and the outer circumference of the pipe 5 is directed toward the upper surface of the fixture 6. In addition, the pin hole 11 opened in the sliding fitting 7 is
This engaging surface 10 is provided with a horizontally penetrating opening in the upper part of the sliding fitting 7 at a position where no electrical conduction occurs.

Further, the engaging claw 1 fixed to the scaffold pipe 12
3 has an upper claw 20 and a lower claw 21 formed in the vertical direction, and the terminal side surface of the engaging claw 13 is cut into an arc shape with the same radius of curvature as the outer periphery of the pipe 5 to make contact. A surface 19 is formed. The upper claw 20 of the engagement claw 13 has a side surface inclined at the same angle of inclination as the engagement surface 10, and has a semicircular wedge shape that becomes sharper upward. It is formed in In addition, the engaging claw 13
The lower claw 21 has its side surface inclined at the same angle of inclination as the hooking surface 9, and is formed into a semicircular wedge shape that becomes sharper downward. An engaging metal fitting 22 is fixed to the tip of the connecting cable 17, and an insertion hole 23 is opened through the flat side surface of the engaging metal fitting 22.

Next, the operation of this embodiment will be explained.

First, stand up the support pipes 1 at intervals so that they are perpendicular to each other at the four corners. The groups on the right side in the figure are placed close together, and the support pipes 1 and 1 of different groups are placed apart (separated left and right in FIG. 1). Then, the distance between the support pipes 1 and 1 in one set is maintained at the length of the bracket 2, and the lower claw 21 of the engaging claw 13 of each bracket 2 is engaged with the hook surface 9 of the fixing metal fitting 6. Similarly, the distance between the different sets of support pipes 1 and 1 is maintained at the same length as the horizontal pipe 3, and the hook surfaces 9 of the fixing fittings 6 on the different sets of support pipes 1 and 1 are fixed to both ends of the horizontal pipes 3. Engage the engaging claws. During this work, the sliding fitting 7 is lifted upward along the pipe 5 by hand or the like, and a gap is left between the upper surface of the fixing fitting 6 and the lower surface of the sliding fitting 7. and,
With the contact surface 19 of the engagement claw 13 in contact with the outer surface of the pipe 5, the sliding fitting 9 is dropped along the pipe 5, and the upper claw 20 is inserted into the engagement surface 10. do.

FIG. 4 shows a state in which the sliding metal fitting 7 has been dropped and the upper claw 20 has been inserted into the engaging surface 10. As a result, the horizontal pipe 3 and the scaffolding pipe 12 are connected to the pipe 5, and the force applied to the scaffolding pipe 12 is held by the engaging claws 13 and the fixture 6. Further, the lower claw 21 is in close contact with the inner periphery of the hooking surface 9 of the fixing metal fitting 6, and the upper claw 20 is in close contact with the engaging surface 10 formed on the inner periphery of the sliding metal fitting 7. Because downward force is always applied,
It will not come off unless you apply a lot of force.
After that, insert the pin 24 into the insertion hole 23,
After passing through the pin holes 11 and 18, the pin 24 is passed through the pin holes 18 and 11 on the opposite side.
The pipe 5 and the sliding fitting 7 are fixed by the pin 24, and the engaging claw 13 is held between the fixing fitting 6 and the sliding fitting 7 from above and below, so that the scaffolding pipe 12 will not fall off. At the same time, since the tip of the connecting cable 17 is fixed by the pin 24, the connecting cable 17 is stretched in an X-shape between the supporting pipes 1 and 1 of different sets facing each other. Therefore, the support pipes 1 between different sets become parallelograms, and their shapes are not deformed.

〔Effect of the invention〕

Since the present invention is configured as described above, other structural members can be engaged with the support pipe in any horizontal direction of 360 degrees, so the adjacent left and right surfaces to be assembled can be assembled at angles other than right angles. Scaffolding can be assembled at any angle even when Therefore, even if the intersections of the wall surfaces are not perpendicular to each other and the two wall surfaces are constructed at a free angle, the angle at which the engaging claw contacts the fixing metal fitting can be freely set. Therefore, even if any building or structure has walls constructed at a deformed angle,
Scaffolding can be assembled according to the outer shape of the scaffold.

In addition, when assembling this scaffold, when connecting the support pipe and the scaffolding pipe, it is only necessary to press the sliding metal fittings so that they cover the engaging claws, which makes the assembly work extremely easy. and the support pipe cannot be easily removed. Furthermore, since there is no surface that opens upward, and the conical space of the sliding fitting opens downward, dirt and debris do not enter the groove, and cleaning after work is unnecessary. It is what it is.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an assembled scaffold that is an embodiment of the present invention, Fig. 2 is a side view showing the structure of the scaffold pipe, and Fig. 3 is an exploded view showing the vicinity of the fixing fittings and sliding fittings. The perspective view and FIG. 4 are partially sectional side views showing a state in which the support pipe and the scaffolding pipe are connected. 1... Prop pipe, 2... Bracket, 3...
Horizontal pipe, 4...Treadboard, 5...Pipe, 6...
...Fixing metal fitting, 7...Sliding metal fitting, 9...Hooking surface, 1
0... Engaging surface, 12... Scaffolding pipe, 13... Engaging claw, 20... Upper claw, 21... Lower claw.

Claims (1)

[Claims] 1. A long pipe with a circular cross section arranged slightly vertically, and an annular hook fixed to the outer periphery of this pipe and tapered in a tapered shape between the outer periphery of the pipe and the upper surface of the pipe. A fixing metal fitting with a surface formed thereon, and a sliding metal fitting that is slidably inserted in the length direction of this pipe and has a tapered annular engagement surface formed between it and the outer periphery of the pipe on its lower surface. A bracket consisting of a support pipe, a long scaffolding pipe arranged somewhat horizontally, and engaging claws fixed to both ends of the scaffolding pipe and forming upper and lower claws that protrude upward and downward. The side surface of the terminal end of each engaging claw is formed into an arc shape so as to have a curved surface that is almost the same as the curved surface of the pipe, and the side surface of the upper claw is formed into an arcuate shape so as to have a curved surface that is almost the same as the curved surface of the pipe. The lower claw is curved to have a curved surface that is almost the same as the conical curved surface of the hooking surface, and the side surface of the lower claw is curved to have a curved surface that is almost the same as the conical curved surface of the engaging surface. After locking the bracket to the pipe by bringing the end side of the bracket into close contact with the side of the pipe and the curved surface of the lower claw against the hooking surface, move the sliding fitting along the pipe to secure the engaging surface. An assembly scaffold characterized by connecting a bracket to a support pipe by closely contacting the curved surface of the upper claw.