JPH0355756Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a ladder attachment device for attaching a ladder to a pillar material of a steel 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 steps for lifting and lowering were attached to the pillars.

(Problem 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 drawback that removal work after the work was completed was also troublesome. .

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a ladder for lifting and lowering workers that can be easily attached to and detached from a pillar material.

(Means for solving the problem) The technical means is to attach a ladder 1 equipped with a plurality of rungs 3 installed at a predetermined interval between a pair of left and right side bars 2 to a post 4. In the ladder mounting device 6, the ladder mounting device 6 has a fixed frame body 7 which is fixed and fixed between the two side bars 2, and a fixed frame body 7 which is attached and fixed between the rods 2 on both sides, and the pillar material 4 is sandwiched between the ladder mounting device 6 and the ladder mounting device 6. a pair of left and right positioning slides 8 which are disposed at
and a fixing mechanism 9 for fixing the fixed frame body 7 and the pillar material 4 to each other, and a pinion 17 is rotatably provided on the fixed frame body 7 so that both the positioning slide bodies 8 move synchronously, Each positioning slide 8 is provided with a rack portion 21 that engages with the top and bottom of the pinion 17, respectively.

(Embodiment) Hereinafter, the first embodiment of the present invention will be described based on the drawings. In Figs. and a plurality of treads 3 installed between the pedestals 2, 2 at predetermined intervals in the longitudinal direction, and each tread 3, as shown in FIG.
It is configured in a cylindrical shape. 4 is a column material made of H-shaped steel or the like.

Reference numeral 6 denotes a ladder mounting device, which includes a fixed frame 7 that is fixedly mounted between the two side rods 2, 2, a pair of left and right positioning sliders 8, 8 supported by the fixed frame 7, and a fixed frame 7. It includes a fixing mechanism 9 that fixes the pillar material 4 to each other. The fixed frame body 7 includes a fixed frame main body 11 bent in a substantially U-shape, and bolts 13, 13 fastened to each other by holding the bent ends 12, 12 of the fixed frame main body 11, respectively. It consists of a pair of fixing metal fittings 14 and 15, and a fitting rod 16 is provided on the inner surface of each of the fixing metal fittings 15 located on the outside to be removably inserted into the treadle 3 from the side. Further, as shown in FIG. 4, a pinion 17 is rotatably provided on one side of the center portion of the fixed frame body 11 in the left-right direction. 18 is a guide cover that covers the pinion 17. Furthermore, guide holes 19, 19 are formed in the fixed frame main body 11, respectively, and are located on both sides of the pinion 17 and are elongated in the left-right direction. Each of the positioning sliders 8, 8 has both guide holes 1.
Guide rods 20, 20 are mounted and supported within the positioning slides 9, 19 so as to be relatively slidable along their longitudinal directions, and guide rods 20, 20 are provided on the upper side of each positioning slide body 8, 8, and the guide rods 20 on the lower side of the other side, respectively. The upper guide rod 20 is provided with a protruding rack portion 21 on the lower surface thereof, and the lower guide rod 20 is provided with a rack portion 21 on the upper surface that engages with the pinion 17.
21 are provided. The ends of each guide rod 20 are engaged with the upper and lower portions of the pinion 17, respectively, and are supported by a guide cover 18. Further, the positioning sliding body 8 includes a so-called U-shaped abutment body 22 that abuts and engages with the flange portions 4a, 4a of the pillar material 4. Each positioning sliding body 8 is arranged at left and right distributed positions with respect to a pinion 17 provided at the center of the fixed frame main body 11. The fixing mechanism 9 includes a screw shaft 24 screwed into the positioning slider 8 so as to be able to move forward and backward, a pressing head 25 provided at the tip of the screw shaft 24, and a jaw facing the pressing head 25 at one end of the contact body 22. 26, forming a so-called clamp mechanism.

When attaching the ladder 1 to the pillar 4,
As shown in FIG. 1, the fitting rod 1 of the fixing fitting 15
6 is fitted into the treadle 3, the fixed frame body 11
When the bolt 13 is fastened with both fixing metal fittings 14 and 15, the side beam 2 is held between both the fixing metal fittings 14 and 15, and the ladder attachment device 6 is inserted between the side beams 2 and 2 of the ladder 1. It is installed and fixed over the entire length. At this time, the positioning sliders 8, 8 are arranged at left and right positions with respect to the center of the step 3, and are movable in a direction parallel to the step 3. Further, as shown in FIG. 6, a plurality of ladder attachment devices 6 may be attached at intervals in the longitudinal direction of the ladder 1. After both positioning sliders 8, 8 of each ladder attachment device 6 are spaced appropriately from each other, the abutting body 2 of one positioning slider 8 is
Between the jaw part 26 of 2 and the pressing head 25, the pillar 4
By relatively inserting the flange portion 4a of the contact body 2
2 and the flange portion 4a, then screw shaft 2
4, a state is obtained in which the flange portion 4a is clamped and fixed between the jaw portion 26 and the pressing head 25. From this state, if the other positioning slide 8 is pushed in the direction of the flange 4a of the column 4, the other flange of the column 4 will be placed between the jaw 26 of the positioning slide 8 and the pressing head 25. 4a is relatively inserted, and as before, by screwing the screw shaft 24, the jaw part 26 and the pressing head 25
A state is obtained in which the flange portion 4a is clamped and fixed. Here, the state of attachment of the ladder 1 to the pillar material 4 is obtained. Further, when removing the ladder 1 from the pillar material 4, it is sufficient to perform the reverse operation to that described above. That is, pillar material 4
The operation of attaching or detaching the ladder 1 to or from the ladder 1 can be easily performed by moving the screw shaft 24 forward or backward and adjusting the distance between the two positioning sliders 8, 8. Moreover, since the rack parts 21, 21 provided on both the positioning slides 8, 8 are engaged with the upper and lower sides of the pinion 17, both the positioning slides 8,
8 is adjusted to move synchronously with respect to the pinion 17 in the far and near directions, so that the center of the step 3 always coincides with the center of both positioning sliders 8, 8. Therefore, when the ladder 1 is attached to the pillar material 4, the longitudinal centers of the pillar material 4 and the ladder 1 coincide, preventing misalignment of both, and a stable mounting state can be easily obtained.

Moreover, FIG. 6 shows a steel structure in which pillar members 4 are connected to each other in the vertical direction, and 28 is a beam member. As shown in FIG.
The attached bolt 30 is inserted, and the nut 31
is fixed. A safety rope 32 is provided between the holes 29 of the upper and lower bolts 30, and the safety rope 32 may be provided with a lollyp or the like as appropriate.

8 to 10 show a second embodiment, in which the pillars 4 are fixed in a holding manner. The fixing mechanism 9 includes a chain 34, a carabiner 35, a bolt 37 with a hole 36, a nut 38, and the like. 39 is a rubber hose, and 40 is a rubber plate. Further, FIG. 11 shows a third embodiment, in which bolts 37 and nuts 38 are connected to the fixed frame 7.
It is said to be equipped on the side.

(Effect of the invention) According to the invention, the ladder mounting device has a fixed frame body that is installed and fixed between the ladders on both sides, and a fixed frame body that is installed and fixed between the ladders on both sides. The fixed frame includes a pair of left and right positioning sliding bodies disposed in the treadle and supported by the fixed frame so as to be movable in a direction parallel to the treadle, and a fixing mechanism for fixing the fixed frame and the column to each other. A pinion is rotatably installed in the
Each positioning sliding body is provided with a rack part that engages with the top and bottom of the pinion, and both positioning sliding bodies are configured to move synchronously, making it easy to attach or remove the ladder from the pillar. This has the advantage that misalignment between the pillar material and the ladder can be prevented, and a stable mounting state can be easily obtained.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional plan view showing the first embodiment of the present invention, FIG. 2 is a sectional view taken along the line taken from FIG.
The figure is Fig. 1 - line arrow view, Fig. 4 is Fig. 2 -
5 is a cross-sectional view taken along the line from FIG. 2, FIG. 6 is a side view showing the installed state, FIG. 7 is a cross-sectional view taken from FIG. 6 taken from the line shown in FIG. 9 is a plan view showing the second embodiment, FIG. 9 is a sectional view taken along the line in FIG. 8, FIG. 10 is a plan view taken along the line in FIG. 8, and FIG. 11 is a plan view showing the third embodiment. 1...Ladder, 2...Side beam, 3...Stile, 4...
Pillar material, 6... Ladder mounting device, 7... Fixed frame, 8
...Positioning sliding body, 9...Fixing mechanism, 17...
Pinion, 21...Rack part.

Claims (1)

[Scope of utility model registration request] In a ladder attachment device 6 for attaching a ladder 1 having a plurality of rungs 3 installed at a predetermined interval between a pair of left and right side bars 2 to a post 4, the ladder attachment device 6
is a fixed frame 7 that is installed and fixed between the two rods on both sides.
A pair of left and right members are disposed at left and right positions with respect to the center of the tread 3 and are supported by a fixed frame 7 so as to be movable in a direction parallel to the tread 3 so as to hold the pillar 4 in a sandwiched state. positioning sliding body 8, fixed frame body 7 and pillar material 4
A pinion 17 is rotatably provided on the fixed frame body 7 so that both the positioning slide bodies 8 move synchronously, and each positioning slide body 8 has a fixing mechanism 9 for fixing the two positioning slide bodies 8 to each other. A ladder mounting device characterized by being provided with rack parts 21 that engage with each other at the top and bottom.