JPH0317987B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a ladder attachment device for attaching a ladder to a pillar material of a steel frame structure or the like.

(Prior Art) When constructing a steel structure for a building, it is necessary for workers to ascend and descend to their working positions in order to carry out various tasks. Therefore, in the past, a method was adopted in which a step for raising and lowering the pillar was attached along one side of the pillar.

(Problems to be Solved by the Invention) However, according to the above method, many steps had to be attached to the pillar material, which was troublesome and had the disadvantage that removal work after the work was completed was also troublesome. .

Furthermore, as shown in FIG. 5, the step S can only be attached to the outer surface of the outer column 2 constituting the steel structure 1, which has the disadvantage of poor work efficiency.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a ladder for use in raising and lowering workers that can be easily attached to and detached from a post and that can be attached to a post at any position.

(Means for solving the problem) The technical means is to run a ladder 4 equipped with a plurality of rungs 6 installed at a predetermined interval between a pair of left and right side bars 5 along a pillar 2. Ladder attachment device 11 to attach
In this case, the ladder attachment device 11 has a contact portion 13 that abuts across both sides of the corner portion 12 of the pillar material 2.
A tightening belt 14 surrounding the column 2 is connected at one end to one end of the abutting part 13, and a tightening belt 14 is provided at the other end of the abutting part 13, and the free end of the tightening belt 14 is connected to one end of the abutting part 13. It is located at the corner between the clamping metal fitting 15 which is removably engaged and can be freely operated for winding, and the beam member 8 connected to the pillar member 2 to fix and hold the ladder 4 in the vertical direction. , and a fixed frame part 16 having a connecting part 35 which is provided in a protruding manner on the outer surface side of the contact part 13 and is connected to the step rung 6 of the ladder 4.

(Function) According to the present invention, the ladder attachment device 11 is attached to the ladder 4 using the connection portion 35 of the fixed frame portion 16 of the ladder attachment device 11, and the abutment portion 13 is connected to the corner portion 12 of the column 2. The ladder 4 can be attached to the column 2 by bringing the tightening belt 14 into contact with the column 2, winding the tightening belt 14 around the column 2, engaging its free end with the tightening metal fitting, and performing a winding operation.

(Embodiment) Hereinafter, embodiments of the present invention will be described based on the drawings. In FIGS. 1 to 5, 4 is a ladder made of light alloy such as aluminum, and a pair of left and right side bars 5
and a plurality of treads 6 installed at predetermined intervals in the longitudinal direction between the rods 5, 5 on both sides, and each tread 6 has a cylindrical shape as shown in FIG. It is configured.

2 is the column material, which is made of square pipe or H-shaped steel, etc.
Shiguchi 9 for connecting beams 8 on each side, 3 sides, or 4 sides
A beam material 8 is installed between each joint 9 to form a steel structure 1.

11 is a ladder mounting device, which is attached to the corner part 1 of the pillar material 2.
a contact portion 13 that abuts across two both sides;
It is composed of a tightening belt 14 such as a nylon sling belt surrounded by the pillar material 2, a tightening fitting 15 for tightening the tightening belt 14, and a fixed frame part 16 for fixing and holding the ladder 4.

The abutment portion 13 is made of a plate-shaped body bent at approximately 90° in plan view, and a rubber plate 17 is attached to the inner surface of the abutment portion 13 . As shown in FIGS. 1 and 3, a tightening belt 14 is attached to one end of the contact portion 13.
An annular attachment portion 18 at one end is connected and held through the insertion of a bolt 19. Further, as shown in FIGS. 1, 2, and 3, a connecting portion 20 of a fastening fitting 15 is connected and held to the other end of the abutting portion 13 via a bolt 21 inserted therethrough.

The fastening fitting 15 includes a connecting base 22 connected to the abutting part 13, has a pair of upper and lower connecting parts 20 at one end of the connecting base 22, and has a pair of upper and lower arm support parts 23 at the other end. . Reference numeral 24 denotes an operating arm, which is rotatably supported by the arm support portion 23 via a support 25. The support shaft 25 is divided into two parts, and is configured such that the free end side of the tightening belt 14 can be inserted and removed therethrough. A ratchet wheel 26 is provided between the operating arm 24 and the arm support portion 23, respectively, and the ratchet wheel 26 is configured to rotate together with the support shaft 25. 27 is a detent body, and a pawl wheel 26
It is held by the connecting base 22 so as to be removably engaged with the connecting base 22, and is biased by a spring body 28 in the engaging direction. Reference numeral 29 denotes an operating pawl, which is held on the operating arm 24 so as to be removably engaged with the ratchet wheel 26;
It is resiliently biased in the engagement direction by a spring body 30.

When the operating arm 24 is operated to swing, the ratchet wheel 26 is rotated in a predetermined direction by the operating pawl 29, and the rotation of the ratchet wheel 26 also rotates the support shaft 25 in the same direction. The tightening belt 14 is attached to the support shaft 2
It is wound around 5. Detent body 2
7 and the operating pawl 29 are disengaged from the ratchet wheel 26, the ratchet wheel 26 becomes freely rotatable and the tightening belt 14 can be unwound.

The fixed frame part 16 is made of square pipe material,
A horizontal member 32, a diagonal member 33, and both horizontal members 3 are provided in a protruding manner on the outer surface side of the protruding corner of the contact portion 13 and protrude outward from each side surface of the contact portion 13 in a perpendicular manner.
2 and a connecting member 34 that connects the two.
Further, a connecting portion 35 to which the ladder 4 is connected is provided at the end of each horizontal member 32, and a rod insertion hole 37 into which a mounting rod 36 is inserted is formed in each connecting portion 35. As shown in FIG.
6 rod insertion hole 37, both side rods 5 and treadles 6 of ladder 4
The ladder 4 and the ladder mounting device 11 are fixed by the mounting rod 36 inserted through the ladder 4 and the ladder mounting device 11. A retaining pin 38 or the like is appropriately attached to the protruding end of the mounting rod 36.

Incidentally, as shown in FIG. 1, the ladder mounting device 11
The ladder 4 attached and fixed to the fixed frame part 16 is the pillar material 2.
Each horizontal member 32 has an appropriate length so that it is located at the corner between the beam members 8 connected to the horizontal member 32 .

The embodiment of the present invention is configured as described above, and when attaching the ladder 4 to the pillar material 2, the ladder 4
A plurality of ladder attachment devices 11 are attached and fixed at appropriate intervals in the longitudinal direction of the side beam 5. Thereafter, the contact portion 13 of each ladder attachment device 11 is brought into contact with the corner portion 12 of the desired column material 2, and the tightening belt 14 is attached to the column material 2.
Wrap the free end around the tightening fitting 15.
When the operating arm 24 is engaged with the support shaft 25 of the
The ladder attachment device 11 is fixed to the pillar 2 here, and the ladder 4 is attached to the pillar 2. Further, when removing the column 2, the detent body 27 that engages with the ratchet wheel 26 and the operating pawl 29 may be disengaged. As described above, the ladder 4 can be easily attached to and detached from the pillar material 2. In addition, the ladder 4 is installed using the corner part 12 of the pillar 2, and the ladder 4 can be installed in a position avoiding the beam 8 connected to the pillar 2. As shown in FIG. It can be attached to the pillar material 2 at any position of the object 1, improving work efficiency and reducing costs. Further, the tightening belt 14 is wound around the column 2 and tightened to fix it, so that changes in the dimensions of the column 2 can be easily accommodated, as shown by the imaginary lines in FIG.

(Effects of the Invention) According to the present invention, the ladder attachment device has a contact portion that abuts across both sides of a corner portion of a pillar material, and a pillar having one end connected to one end of the contact portion. A tightening belt for surrounding the material, a tightening metal fitting provided at the other end of the abutting part and with the free end of the tightening belt removably engaged to allow a winding operation, and a column material. In order to securely hold the ladder in the vertical direction by being located at the corner between the beams connected to the beams, the connecting part is provided in a protruding shape on the outer side of the abutting part and is connected to the rungs of the ladder. The ladder can be easily attached to and removed from pillars, and can be attached to pillars in any position such as steel structures, improving work efficiency and reducing costs. can be achieved. Furthermore, it has the advantage of being able to easily accommodate changes in the dimensions of the pillars.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a partially sectional side view of the same, FIG. 3 is a view taken along the line shown in FIG. FIG. 5 is an explanatory diagram showing the attached state. 1... Steel structure, 2... Pillar material, 4... Ladder,
5...Side beam, 6...Stile, 8...Beam material, 11...
Ladder mounting device, 12... Corner part, 13... Contact part, 14... Tightening belt, 15... Tightening metal fitting,
16... Fixed frame part, 35... Connecting part.

Claims (1)

[Claims] 1. In a ladder mounting device 11 that attaches a ladder 4 equipped with a plurality of rungs 6 installed at a predetermined interval between a pair of left and right side bars 5 along a pillar 2, the ladder mounting device 11 is attached to the pillar 2. a contact part 13 that abuts across both sides of the corner part 12; a tightening belt 14 for surrounding the column material 2, one end of which is connected to one end of the contact part 13; A fastening fitting 15 provided at the other end and removably engaged with the free end of the tightening belt 14 for winding operation.
The contact part 13 is provided in a protruding shape on the outer surface side of the contact part 13 in order to be located at the inner corner between the beam members 8 connected to the pillar members 2 and to fix and hold the ladder 4 in the vertical direction. Fixed frame part 1 having a connecting part 35 connected to the step 6
6. A ladder mounting device characterized by comprising: