JPH0810630Y2 - Scaffolding for construction work - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a scaffold for construction work. More specifically, the present invention relates to a scaffold for construction work suitable for working in high places when constructing a structure.

[Background technology]

For example, when a pillar or a beam is sequentially joined to construct a structure in an upper layer, work at a high place is required. Usually two stories,
Alternatively, when constructing a three-story building, a stepladder or a ladder is generally used for working in high places.

When performing work using a stepladder, the stepladder is installed in the vicinity of the work position, and the worker is placed on it to perform the work. Also, when performing work using a ladder, hang the upper part of the ladder on the pillars or beams of the structure and install it diagonally,
Work is carried on the ladder of the ladder.

[Problems to be solved by the device]

However, the conventional method of using a stepladder or a ladder to perform work in high places has the following problems.

In the case of a stepladder, the stepladder must be installed near the work position, so if the installation surface is not horizontal,
The stepladder is prone to fall and the worker's safety cannot be ensured. Therefore, when performing high-altitude work using a stepladder, there is a problem that the installation surface near the work position is limited to a horizontal place.

In the case of a ladder, the upper part is simply hung on the pillars or beams of the structure, so there is a problem that the ladder will fall off the pillars or beams when working on the ladder. is there.

Here, the object of the present invention is to solve such conventional problems, provide a scaffolding for construction work which can be easily attached to a construction structure, can be safely operated, and has a simple structure. To do.

[Means for solving the problem]

Therefore, the scaffolding for construction work of the present invention is a ladder in which a plurality of cross rails are spanned at predetermined intervals between two stanchions, and the upper part of the ladder is perpendicular to the longitudinal direction of the ladder. An intermediate piece having an engaging projection that is projecting parallel to the step rail and that can be inserted into a hole formed in a structure, and a holding portion that holds the pedestal located on the projecting side of the engaging projection, and And a U-shaped locking tool that includes a pair of holding pieces that are bent at substantially right angles from both ends of the intermediate piece and that can hold the structure.

[Action]

After inserting the engaging projection on the top of the ladder into the hole of the structure, when the locking tool is clamped to the structure and the position apart from the engaging projection of the ladder is locked to the structure, the ladder engages. Since it is in a state of being locked to the structure at the two positions of the projection and the locking tool, it can be easily attached to the structure and the safety can be secured even when the work is carried on the ladder. Moreover, since the engaging projection is provided on the upper part of the ladder at a right angle to the longitudinal direction of the ladder and parallel to the step rail, when the engaging projection is inserted into the hole of the structure, the hole of the structure is formed. Since the step rail is at a right angle to the surface on which it is drilled, the foot does not hit the structure even if the foot is put on the step rail and moved up and down. In addition, the locking tool includes an intermediate piece having a holding portion that holds the pedestal located on the protruding side of the engagement projection, and a pair of intermediate pieces that are bent at substantially right angles from both ends and that can sandwich the structure. Since it has a U-shaped structure including the sandwiching piece, it can be easily attached to and detached from the structure.

〔Example〕

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

FIG. 1 shows a scaffold for construction work according to this embodiment. The scaffolding for construction work comprises a ladder 1, an engaging projection 11 integrally provided on an upper portion of the ladder 1 and projecting at a right angle to the longitudinal direction of the ladder 1, and a locking tool 21. There is.

The ladder 1 includes two stanchions 2A and 2B having a predetermined length,
It is composed of a plurality of step rails 3 provided at predetermined longitudinal positions between the two pillars 2A and 2B. That is, it is formed in a normal ladder shape.

The engaging projection 11 is provided between the upper ends of the two pedestals 2A and 2B at right angles to the pedestals 2A and 2B and in parallel with the step bar 3. As shown in FIG. 2, the projecting portion 12 of the engaging projection 11 has a circular cross-section that can be inserted into a hole 14 formed in a building structure, here, a column 13 forming a part of the building structure. And a length dimension that penetrates the hole 14 respectively.

As shown in FIG. 3, the locking tool 21 includes a pair of holding pieces 23A, 23B which are bent at substantially right angles to the intermediate piece 22 at both ends of the intermediate piece 22 and which can hold the column 13 from both sides. It has a U-shape. At the center position of the intermediate piece 22, a holding portion 24 is formed which holds the lower side of the one pillar 2B of the ladder 1, that is, the position apart from the engaging projection 11.

 Next, the operation of this embodiment will be described.

When performing work at a high place, the protrusion 12 of the engaging projection 11 provided on the upper portion of the ladder 1 is inserted into the hole 14 of the column 13. Then, the ladder 1 is in a state in which movement in the vertical direction and the front-back direction is restricted. However, in this state, the engaging protrusion 11
The rotation around the fulcrum is free.

Next, the pair of holding pieces 23A and 23B of the locking tool 21 is held by the column 13. Then, the locking tool 21 restricts the rotation of the ladder 1 about the engaging projection 11 as a fulcrum, and at the same time restricts the movement of the engaging projection 11 in the pulling-out direction.
All movements of are restricted.

In this state, the ladder 1 is placed on the step rail 3 to perform work at a high place.

Therefore, according to the present embodiment, an engaging protrusion 11 that can be inserted into the hole 14 of the column 13 is provided on the upper portion of the ladder 1, and
Since the locking tool 21 that locks the pillar 13 at a position away from the engaging projection 11 is provided, it is possible to safely carry out high-altitude work on the ladder 1.

Further, since the engaging projection 11 is provided on the upper part of the ladder 1 at a right angle to the longitudinal direction of the ladder 1 and in parallel with the step rail 3, when the engaging projection 11 is inserted into the hole 14 of the column 13. Since the step bar 3 is at a right angle to the surface of the pillar 13 where the hole 14 is formed,
The foot does not hit the pillar 13 even if the foot is put on the cross rail 3 and moved up and down. That is, when the ladder 1 is attached to the pillar 13 so that the surface of the ladder 1 on which the step crossing 3 is provided faces the pillar 13, a spacing member for securing a space between the step crossing 3 and the pillar 13 is provided. Although necessary, in the structure of the present embodiment, the spacing member can be omitted, so that the structure can be simplified accordingly.

Also, after inserting the engaging projection 11 into the hole 14 of the column 13, the locking tool 21 can be sandwiched by the column 13, so that the ladder 1 can be attached to the column 13 and the reverse operation can be performed. For example, the ladder 1 can be removed from the pillar 13, that is, the ladder 1 can be easily attached to and removed from the pillar 13, so that the ladder 1 can be carried to another place and easily attached to another pillar.

Further, since it is sufficient to form one hole 14 in the pillar 13, the strength of the pillar 13 is not reduced. By the way, it is conceivable that a plurality of holes are formed along the longitudinal direction of the column at predetermined intervals, and scaffolding metal fittings are sequentially inserted into the holes to work, but in this case, the strength of the column decreases. Remains.

[Effect of device]

As described above, according to the present invention, an engaging projection that can be inserted into a hole of a structure is provided on an upper portion of a ladder, and a locking tool that locks a position apart from the engaging projection to the structure is provided. Therefore, it can be easily attached to the structure, and the work at high places can be performed safely.

Also, when the engaging projection is inserted into the hole of the structure, the step rail becomes a right angle to the surface where the hole of the structure is drilled, so even if you put your foot on the step rail, the foot structure will not change. You won't hit anything. In addition, the locking tool includes an intermediate piece having a holding portion that holds the pedestal located on the protruding side of the engagement projection, and a pair of intermediate pieces that are bent at substantially right angles from both ends and that can sandwich the structure. Since it has a U-shaped structure including the sandwiching piece, it can be easily attached to and detached from the structure.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention.
1 is a perspective view, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is a sectional view taken along line III-III in FIG. 1 ... Ladder, 11 ... Engaging protrusion, 13 ... Pillar (structure),
14 ... hole, 21 ... locking tool, 23A, 23B ... clamping piece.

Claims (1)

[Scope of utility model registration request] 1. A ladder in which a plurality of pedestals are bridged between two pedestals at predetermined intervals, and the upper part of the ladder is perpendicular to the longitudinal direction of the ladder and parallel to the pedestals. An engaging projection that can be inserted into a hole that is provided so as to project and is bored in the structure,
U-shape that includes an intermediate piece having a holding portion that holds the pedestal located on the protruding side of the engagement projection and a pair of holding pieces that are bent at substantially right angles from both ends of the intermediate piece and can hold the structure Scaffolding for construction work, characterized by comprising: