JP6184164B2 - Handrail frame for framework scaffolding - Google Patents

Description

  The present invention relates to a handrail frame for a framework scaffold attached to a framework scaffold.

  As shown in FIG. 8, a frame scaffold installed at a construction site or the like is assembled using a building frame 100, a scaffolding plate 200, and braces (crossing streaks) 300. The building frame 100 has a gate shape having a pair of pedestals 101 and 101 and a horizontal member 102 connecting the upper ends thereof. With the building frame 100 facing each other, the scaffolding plate 200 is bridged between the horizontal members 102 of both the building frames 100 and 100, and the brace 300 is bridged between the pillars 101 of the both building frames 100 and 100. As a unit, this shape is assembled sequentially along the outer wall of the building in the upward and left-right directions. Specifically, as shown in FIG. 8, the building frames 100, 100 are connected to the upper portions of the both building frames 100, 100, and similarly, the scaffolding plate 200 and the brace 300 are spanned to assemble upward. In addition, the same building frame 100 is shared, the building frame 100 is also opposed to the opposite side, and similarly, the scaffolding plate 200 and the brace 300 are spanned to assemble in the left-right direction.

  In the process of assembling and disassembling such a framework scaffold, an operator may have to work on the uppermost scaffold plate 200. For example, when the upper stage is assembled from the state shown in FIG. 8A as shown in FIG. 8B, the worker needs to work while standing on the uppermost scaffold plate 200 in the state shown in FIG. 8A. . Therefore, in order to prevent the operator from falling, as shown in FIG. 8 (a), after attaching the frame scaffolding handrail frame 400 to the framework scaffold in the assembly / disassembly process, as shown in FIG. 8 (b). The upper assembly work is performed (see Patent Document 1). Such a frame scaffolding handrail frame 400 is also referred to as a preceding handrail.

JP 2011-247001 A

For example, there is a structure in which casters are provided at the lower part of the pillars 101 of the lowermost building frame 100 so that the frame scaffold can be moved.
However, when moving the frame scaffolding to which the frame scaffolding handrail frame 400 is attached, the frame scaffolding handrail frame 400 collides with, for example, a part of the ceiling being lowered by a beam or the like, and cannot be moved. There can be a situation. In that case, it is necessary to remove the frame scaffolding handrail frame 400 and then move the frame scaffold.

  This invention is made | formed in view of the above points, and it aims at changing the height of the handrail frame for frame scaffolds attached to the frame scaffold.

A handrail frame for a frame scaffold according to the present invention is a handrail frame for a frame scaffold attached to the frame scaffold, a fixed frame that is detachably attached to the frame scaffold, and a movable that is slidable up and down with respect to the fixed frame and a frame, said fixed frame comprises a pair of left and right posts made of pipe material, and a rung which is bridged between the pair of posts, said movable frame, the pair of columns of the fixed frame Each having a pair of left and right vertical saddle portions to be inserted, an upper horizontal flange portion connecting the upper ends of the pair of vertical flange portions, and a lower horizontal flange portion connecting the lower ends of the pair of vertical flange portions, characterized in that having a substantially rectangular annular corner portions rounded. A vertical lattice may be constructed between the upper lateral reed part and the lower reed part.
Another feature of the frame scaffolding handrail frame of the present invention is that it includes a lock mechanism that can lock the movable frame at a plurality of height positions.

  ADVANTAGE OF THE INVENTION According to this invention, the height of the handrail frame for frame scaffolds attached to the frame scaffold can be changed. This reduces the height of the handrail frame for the frame scaffold when moving the frame scaffold with the handrail frame for the frame scaffold attached, for example, even if the handrail frame for the frame scaffold is likely to collide with a part of the ceiling. Therefore, it is possible to avoid hitting a part of the ceiling.

It is a figure which shows the handrail frame for frame scaffolds concerning 1st Embodiment, (a) is a front view, (b) is a right view. It is a figure which shows the fixed frame of the handrail frame for frame scaffolds concerning 1st Embodiment, (a) is a front view, (b) is a top view, (c) is a plane sectional drawing. It is a front view which shows the movable frame of the handrail frame for frame scaffolds concerning 1st Embodiment. It is a figure for demonstrating a fixture, (a) is a top view around a fixture, (b) is a front view of a fixture. It is a figure for demonstrating an attachment part, (a) is a top view of an attachment part, (b) is a right view of an attachment part, (c) is a figure which shows a wedge. It is a figure for demonstrating a locking mechanism, (a) is a front fragmentary sectional view of the bracket arrange | positioned in the location close | similar to a support | pillar, (b) is a right view of the bracket. It is a figure which shows the handrail frame for frame scaffolds concerning 2nd Embodiment, (a) is a front view, (b) is a right view of a fixing metal fitting. It is a perspective view which shows the example of a frame scaffold, and the conventional handrail frame for frame scaffolds.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
(First embodiment)
FIG. 1 illustrates a frame scaffolding handrail frame (hereinafter referred to as “preceding handrail”) according to the first embodiment. In addition, the top and bottom, right and left as used in this application, and front and rear shall mean the direction when Fig.1 (a) and FIG. The framework scaffold will be described with reference to the one shown in FIG.
The preceding handrail according to the present embodiment includes a fixed frame 1 that is detachably attached to a building frame 100 of a frame scaffold, and a movable frame 2 that is slidable up and down with respect to the fixed frame 1. The fixed frame 1 and the movable frame 2 are made of, for example, aluminum or an aluminum alloy in order to reduce the weight.

As shown in FIG. 2, the fixed frame 1 includes a pair of left and right columns 3 </ b> L and 3 </ b> R, and an upper horizontal beam 4 and a lower horizontal beam 5 laid between the pair of columns 3 </ b> L and 3 </ b> R.
The columns 3L and 3R are made of a round pipe material, and are provided with fixing brackets 6L and 6R at the upper portion and mounting portions 7L and 7R at the lower portion. The fixing brackets 6L and 6R and the attachment portions 7L and 7R will be described later. In addition, strip-like baseboards 8 are provided on the rear surfaces of the columns 3L and 3R.
The cross rails 4 and 5 are made of a square pipe material, and are welded to the inner surfaces (surfaces facing each other) of the pair of support columns 3L and 3R.

As shown in FIG. 3, the movable frame 2 is made of a round pipe material, and a pair of left and right vertical saddle portions 9L and 9R respectively inserted into the pair of support columns 3L and 3R of the fixed frame 1 and a pair of vertical flange portions 9L. , 9R having an upper horizontal flange portion 10 connecting between the upper ends thereof and a lower horizontal flange portion 11 connecting the lower ends of the pair of vertical flange portions 9L, 9R, each corner portion having a rounded substantially rectangular shape. Presents a ring. The movable frame 2 is divided into upper and lower parts in the middle of the vertical flange portions 9L and 9R, and is configured in an annular shape by welding and joining the divided portions while being inserted into the support columns 3L and 3R. reference).
Four vertical lattices 13 are installed as reinforcements between the upper horizontal reed part 10 and the lower horizontal reed part 11. The vertical lattice 13 is made of a square pipe material, and in order to avoid interference with the cross rails 4 and 5 of the fixed frame 1, the front side of the upper side reed part 10 and the lower side reed part 11 (FIG. 1A, FIG. 3 on the front side of the sheet).

The fixing brackets 6L and 6R are for supporting the fixing frame 1 so as to be hooked on the horizontal member 102 of the building frame 100. As shown in FIG. 4, the fixing brackets 6 </ b> L and 6 </ b> R include a bracket portion 14 provided on the support pillars 3 </ b> L and 3 </ b> R of the fixing frame 1 and extending rearward, and a plate portion 15 protruding outward from the bracket portion 14. Is provided. The lower portion of the plate portion 15 has a curved shape, and the fixed frame 1 can be supported by placing the lower portion on the horizontal member 102.
Here, the front and rear positions of the plate portion 15 of the left fixing bracket 6L and the plate portion 15 of the right fixing bracket 6R are shifted. In the state where the frame scaffolding is assembled in the left-right direction, the leading handrail may be installed next to each other on the left and right. In this case, the preceding handrail adjacent to the left and right is supported by one horizontal member 102. That is, on one horizontal member 102, a left fixing bracket 6L (a fixing bracket 6L indicated by a one-dot chain line in FIG. 4A) and a right fixing bracket 6R on the left leading handrail are provided on one horizontal member 102. It becomes the situation to put. Therefore, the front and rear positions of the plate portion 15 of the left-side fixing bracket 6L and the plate portion 15 of the right-side fixing bracket 6R are shifted so that the fixing brackets 6L and 6R of the preceding handrail adjacent to the left and right do not interfere.

The attachment portions 7L and 7R are for supporting the fixed frame 1 so as to be engaged with the leg pillars 101 of the building frame 100. As shown in FIG. 5, the attachment portions 7L and 7R are formed at the bracket portion 16 provided on the support columns 3L and 3R of the fixed frame 1 and extending rearward from the outside, and at the tip of the bracket portion 16. , And a concave portion 17 having a substantially U-shaped cross section that opens vertically. Openings 19 for inserting wedges 18 are formed on the left and right side surfaces of the recess 17. By disposing the leg column 101 in the recess 17 and inserting the wedge 18 through the opening 19 and driving it in, the fixing portions 1L and 7R and the leg column 101 can be brought into pressure contact with each other and the fixed frame 1 can be fixed.
Here, the height positions of the left mounting portion 7L and the right mounting portion 7R are shifted. Similarly to the fixing brackets 6L and 6R, when the preceding handrail is installed side by side on the left and right, the left column mounting portion 7L on the right handrail and the right mounting portion 7R on the left handrail It will be the situation to lock. Therefore, the height positions of the left attachment portion 7L and the right attachment portion 7R are shifted so that the attachment portions 7L and 7R of the adjacent handrails adjacent to the left and right do not interfere with each other.

The preceding handrail according to the present embodiment includes a lock mechanism that can lock the movable frame 2 at a plurality of height positions. A pair of left and right bars 20L and 20R are arranged along the lower surface of the horizontal rail 4 on the upper side of the fixed frame 1. The bars 20L and 20R are slidably supported by a bracket 21 disposed near the center of the horizontal rail 4 and a bracket 22 disposed near the columns 3L and 3R. As shown in FIG. 6, springs 23 are incorporated around the bars 20L and 20R in the bracket 22, and the springs 23 are engaged with the bars 20L and 20R so that the bars 20L and 20R are moved in the directions of the columns 3L and 3R. Energize.
Holes through which one ends of the bars 20L and 20R (ends on the column 3L and 3R side) are inserted are formed in the columns 3L and 3R of the fixed frame 1. Also, holes are formed at a plurality of height positions in the vertical flange portions 9L and 9R of the movable frame 2. By inserting one end of the bars 20L and 20R in a state where the holes of the columns 3L and 3R and the holes of the vertical flange portions 9L and 9R coincide with each other, a lock state in which the sliding of the movable frame 2 is restricted may be obtained. it can.
A bent portion 24 is formed at the other end of the bars 20L and 20R (the end portion near the center of the horizontal rail 4) toward the rear, that is, toward the worker standing on the scaffolding plate 200. The operator can release the lock by sliding the bars 20L, 20R against the urging force of the spring 23 by grasping and grasping the bent portions 24 of both bars 20L, 20R with one hand. In this way, the operator can perform the unlocking operation with the other hand while supporting the preceding handrail with one hand. Then, if the hand holding the bars 20L and 20R is released, the bars 20L and 20R can slide in the directions of the columns 3L and 3R by the urging force of the spring 23 to be in the locked state.

  As described above, the fixed frame 1 detachably attached to the building frame 100 of the frame scaffold and the movable frame 2 slidable up and down with respect to the fixed frame 1 are provided, so that the frame is attached to the frame scaffold. The height of the handrail frame for the framework scaffold can be changed. As a result, when moving the frame scaffold to which the preceding handrail is attached, even if the preceding handrail seems to collide with a part of the ceiling, for example, by lowering the height position of the movable frame 2, The framework scaffold can be moved to avoid hitting it.

(Second Embodiment)
In the first embodiment, the front handrail for the flat side has been described, but in the second embodiment, the handrail for the wife side will be described. FIG. 7 shows a preceding handrail according to the second embodiment. The basic configuration of the preceding handrail is the same as that of the first embodiment, and the following description will focus on differences from the first embodiment, and the same components are the same as those of the first embodiment. Reference numerals are assigned and explanations thereof are omitted.
Since this is a handrail for a wife, the width of the left and right is narrower than that of the preceding handrail according to the first embodiment, and the number of the vertical lattices 13 that are laid between the upper recumbent portion 10 and the lower recumbent portion 11 There are also two.

  Further, in the case of the preceding handrail for the wife side, the horizontal member 102 of the building frame 100 extends to the left and right on the back side of the preceding handrail. Therefore, in the second embodiment, the fixtures 6L and 6R are provided not on the columns 3L and 3R but on the horizontal rail 4 on the upper side of the fixed frame 1 as in the first embodiment. The fixing brackets 6L and 6R include a bracket portion 25 provided on the upper horizontal rail 4 and extending rearward, and a downward arc-shaped groove portion 26 formed at the tip of the bracket portion 25. Can be supported on the horizontal member 102.

  In the second embodiment, the bent portions 24 of the bars 20L and 20R are formed not downward but downward as in the first embodiment. Also in this case, the operator can release the lock by sliding the bars 20L and 20R against the urging force of the spring 23 by grasping and grasping the bent portions 24 of both bars 20L and 20R with one hand. it can.

By the way, the actual situation is that the dimensions of the frame scaffold are divided into an inch size and a meter size. For example, the width of the building frame 100 (the dimension between the pair of pedestals 101 and 101) also has an inch size and a meter size, and even if it seems to be the same size, there is a dimensional difference of about several cm.
In the second embodiment, the left and right opening widths h of the recesses 17 of the attachment portions 7L and 7R are made wider than the diameter of the pedestal 101. As a result, it is possible to absorb a dimensional difference of about several centimeters in width of the building frame 100 and cope with both the inch size and the meter size. Since the attachment portions 7L and 7R and the pedestal column 101 are pressed against each other by the wedge 18, the leading handrail will not be laterally displaced as long as it is a force that normally acts.
In addition to the difference between the inch size and the meter size, the thickness of the pedestal 101 may vary depending on the building frame 100. As for the thickness of the pedestal 101, it can correspond to a plurality of thicknesses as long as it can be arranged in the recesses 17 of the mounting portions 7L and 7R.
Such a configuration may be applied to the preceding handrail according to the first embodiment.

As mentioned above, although this invention was demonstrated with various embodiment, this invention is not limited only to these embodiment, A change etc. are possible within the scope of the present invention.
For example, the structures of the fixtures 6L and 6R and the attachment portions 7L and 7R are merely examples, and are not limited. In the above embodiment, the wedges 18 are driven in the attachment portions 7L and 7R. However, for example, a configuration in which the attachment portions 7L and 7R are locked to the pedestal 101 using screws or the like may be used.

  1: fixed frame, 2: movable frame, 3L, 3R: support, 4: upper horizontal beam, 5: lower horizontal beam, 6L, 6R: fixing bracket, 7L, 7R: mounting portion, 9L, 9R: vertical Saddle part, 10: Upper side reed part, 11: Lower side reed part, 12: Welded part, 13: Vertical lattice, 20L, 20R: Bar, 21: Bracket, 22: Bracket, 23: Spring, 24: Bending part

Claims (3)

A handrail frame for a framework scaffold attached to a framework scaffold,
A fixed frame that is detachably attached to the frame scaffold,
A movable frame that can slide up and down with respect to the fixed frame ;
The fixed frame has a pair of left and right columns made of pipe material, and a horizontal beam constructed between the pair of columns,
The movable frame includes a pair of left and right vertical hooks that are respectively inserted into the pair of support posts of the fixed frame, an upper horizontal hook that connects the upper ends of the pair of vertical hooks, and a lower end of the pair of vertical hooks. A frame scaffolding handrail frame having a lower lateral flange portion that connects the corner portions, each corner portion having a rounded substantially rectangular shape . The frame scaffolding handrail frame according to claim 1 , wherein a vertical lattice is provided between the upper recumbent portion and the lower recumbent portion. The handrail frame for a frame scaffold according to claim 1 or 2 , further comprising a lock mechanism capable of locking the movable frame at a plurality of height positions.

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