JPH051548Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is particularly applicable to climbing scaffolding equipment used for constructing spherical or egg-shaped concrete structures, in which the space inside the work scaffold changes in a curved shape. The present invention relates to a ladder installed in a scaffolding device.

"Prior Art" As is well known, climbing scaffolding devices such as those shown in FIGS. 4 to 6 are used when constructing spherical or oval concrete structures.

Here, to briefly explain the climbing scaffolding device using FIG. Climbing rails 2, 2, . . . are connected and fixed in opposing positions along the vertical direction by bolts 3 buried inside the frame. Further, the climbing rail 2 is also provided continuously in the circumferential direction of the frame 1 (in the direction perpendicular to the plane of the paper). In the engagement grooves 2a of the pair of climbing rails 2, upper sliders 4a, 4a for raising the pair of climbing scaffolding devices A, A, lower sliders 4b,
4b are slidably engaged with each other, and these upper sliders 4a, 4a and lower sliders 4b, 4
Connecting members 6, 6 fixed to the climbing girders 5, 5 of the scaffolding device are rotatably connected with pins to the center part of b.

Hereinafter, only the climbing scaffolding device A disposed outside the frame 1 will be explained. An upper climbing girder 5a is fixed to the upper part of the climbing girder 5, and a beam member 7 is attached to the upper part of the upper climbing girder 5a. It is fixed, and furthermore, an upper stage scaffold 8 is provided above it. A beam 9 is fixed to the central part of the climbing girder 5, and a middle scaffold 10 is provided above it. In addition, a lower climbing girder 5 is installed at the bottom of the climbing girder 5.
b is rotatably provided, a beam 11 is rotatably attached to its lower end, and a lower scaffold 12 is provided above the beam 11. The lower connecting member 6 provided on the climbing girder 5 is constructed so that the upper, middle, and lower scaffolds 8, 10, and 12 are maintained in a state (approximately horizontal state) that does not hinder work. A rotating stand 6a is provided so that the length can be adjusted according to the curved surface of the frame 1, and the lower climbing girder 5b is rotated at a predetermined angle with respect to the climbing girder 5 so as not to contact the constructed frame 1. installed as possible.
The lower climbing girder 5b has a jack 6 whose other end is fixed to the rotating stand 6a.
It is adapted to be rotationally driven by b. Further, the beam members 7, 9, 11 are supported by supporting members 13, 14.
The frame body of the scaffolding device A is formed by being rotatably connected to each other. Furthermore, it goes without saying that this scaffolding device A is also three-dimensionally formed in a direction perpendicular to the plane of the paper. Furthermore, the upper part of the scaffolding device A is provided with a formwork garter 15 inside the frame 1.
and the outer formwork garter 15 are connected to the formwork fastener 16,
16, it is assembled according to the shape of the frame 1 to be constructed. Inside the formwork garters 15, 15, formwork panels 17, 17
The structure is such that concrete C is placed inside the structure. A lifting means 18 equipped with a hydraulic jack is provided near the connecting member 6 above the scaffolding device A, as shown in FIG. The scaffold device A is raised along the climbing rail 2 by taking reaction force from protruding members 19, 19, etc. fixed at regular intervals, and a new frame is constructed on top of the existing frame 1. .

In the climbing scaffolding device A, first, when constructing the lower frame 1, the scaffolding space is inclined to the outside of the frame 1, as shown in FIG. 5, and then the upper frame 1 is constructed. As the construction progresses, the scaffolding space becomes inclined toward the inside of the frame 1, as shown in FIG.

Therefore, in a scaffold where the work space changes, such as the conventional climbing scaffolding device A of this type, in other words, each of the upper, middle, and lower scaffolds 8,
10 and 12, when a worker moves between them, a ladder (not shown) is provided so that the worker can move between them.

``Problems to be solved by the invention'' However, in a ladder used for a scaffold in which the work space changes, such as the conventional climbing scaffolding device, the scaffolding space changes from the outside of the frame 1 as the frame 1 is constructed. It will tilt inward in the opposite direction. Therefore, the ladder used there had the disadvantage that it required frequent rearranging work as the scaffolding space became sloped.

The present invention has been made in view of the above-mentioned problems, and provides a ladder for use on scaffolds where the work space changes, which eliminates the need to rearrange the ladders installed between the work scaffolds in accordance with changes in the work space. is intended to provide.

"Means for Solving the Problem" In order to solve the problem, the present invention is provided with a structure in which the ladder is rotatably attached to the lower end of the ladder, approximately at the center of the floor of the lower scaffold of the scaffolding device. A rotating fixing part is provided to adjust the angle at which the ladder is erected, and the upper end of the ladder can be freely attached to and detached from the opening of an elevator provided in the floor of the upper scaffold of the scaffolding device located above the lower scaffold. It is characterized by a mounting and fixing part that can be attached to.

"Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3. These figures show the vicinity of the middle or lower scaffold of the climbing scaffolding device A described in the conventional technique of FIGS. 4 to 6, and in these figures, the components used in the conventional technique are shown. For elements that are the same as
The same reference numerals are used to omit the explanation.

As shown in Figure 1, climbing scaffolding device A
A lower scaffold 12 is provided at the bottom of the ladder 20, and a lower end 20a of a ladder 20 is provided approximately at the center of the lower scaffold 12.
are rotatably connected with a pin.
That is, the ladder 20 has a lower scaffold 12 at its lower end.
The ladder 20 has a rotatable fixing part which is rotatably attached to the substantially central part on the floor surface of the ladder 20 and allows adjustment of the angle at which the ladder 20 is erected. As shown in FIG. 2, the upper end 20b of the ladder 20 is connected to one side ( In this embodiment, it is detachably fixed to the opposite side of the body 1) 22a. That is, the ladder 20 has an upper end portion that is a fixed portion that is detachably attached to and held at the opening side of the elevator opening 22 provided on the floor of the middle scaffold 10. In addition, in that case, the lid 2 of the entrance 22
3 is adapted to be attached to one side 22b of the entrance/exit 22 on the opposite side to the side to which the ladder 20 is attached.

On the other hand, as shown in FIG.
is attached to one side 22b on the frame 1 side of the elevator opening 22 formed in the middle scaffold 10, and the lid 23 is detachably attached to one side 22a on the opposite side of the elevator opening 22. .

Therefore, in the ladder 20 of the present invention used for a scaffold in which the work space changes, the lower end 20a of the ladder 20 is rotated according to the inclination of the frame 1, that is, according to changes in the climbing scaffolding device A. At the same time, it can be attached by temporarily fixing the upper end 20b to a predetermined side of the entrance/exit 22, so there is no need to rearrange it each time as with conventional ladders, and the worker can always stay in the downward position. Since the ladder 20 can be moved up and down, the work can be carried out safely and comfortably.

In addition, in the above embodiment, the ladder of the present invention was installed between the middle scaffold (upper scaffold) 10 and the lower scaffold (lower scaffold) 12, but
Without being limited to this, the upper scaffold (see prior art) 8 may be the upper scaffold and the middle scaffold 10 may be the lower scaffold and may be installed between them.
Furthermore, it may be used for any type of scaffolding as long as the work space changes.

``Effect of the invention'' As mentioned above, this invention has the lower end of the ladder rotatably attached to the approximate center of the lower scaffold, and the upper end of the ladder attached to and detached from one side of the entrance provided on the upper scaffold. Because it is designed to be installed freely, there is no need to rearrange it every time the work space changes, unlike traditional ladders.
Since the worker can always go up and down the ladder while facing downward, the worker can work safely and comfortably.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention, and FIG. 1 is a side view showing the main parts of the present invention;
Figure 2 is a side view showing how the ladder of the present invention is set when constructing the frame of the rear-sloping part, and Figure 3 is a side view showing the ladder of the present invention set when constructing the frame of the front-sloping part. Side views showing the state shown in Figures 4 to 6.
The figures are diagrams showing the conventional technology, and FIG. 4 is a side view of a climbing scaffolding device, FIG. 5 is a side sectional view of the climbing scaffolding device installed at the bottom of an egg-shaped concrete structure, and FIG. FIG. 6 is a side view of the climbing scaffolding device installed on the top of the egg-shaped concrete structure. A... Climbing scaffolding device, 1... Frame, 8
... Upper scaffolding (upper scaffolding), 10... Middle scaffolding (upper scaffolding or lower scaffolding)), 12... Lower scaffolding (lower scaffolding), 20... Ladder, 22... Entrance/exit, 22a , 22b... One side of the entrance.

Claims (1)

[Scope of utility model registration request] Scaffolding in which the space inside the work scaffold gradually changes into a curved shape as the shape of the framework increases, such as a climbing scaffolding device that rises as a concrete structure with a curved framework is constructed upwards. A ladder provided on the device, which is rotatably attached to the lower end of the ladder, approximately at the center of the floor surface of the lower scaffold of the scaffolding device, and is rotatably fixed to enable adjustment of the angle at which the ladder is erected. A work characterized in that the upper end of the ladder is a mounting and fixing part that is detachably attached to the opening side of a hatch provided in the floor of the upper scaffold of the scaffolding device located above the lower scaffold. A ladder used for scaffolding where space changes.