JP4605917B2 - Folding scaffold device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a foldable scaffold device, and more particularly to a foldable scaffold device that is used in a joint work for a bent outer plate portion of a hull and can be folded and carried when the construction is no longer necessary. is there.
[0002]
[Prior art]
When building a ship at a shipyard, work on the bent part occurs, but when performing joint work on the bent outer plate part, conventionally, multiple scaffold hardware has been welded to the inner surface of the outer plate near the outer plate joint part. It was used as a scaffold by fixing, combining multiple boards, or using a ladder.
[0003]
FIG. 6 is a conceptual diagram showing a state in which a scaffolding hardware is fixed to a bent portion of a conventional hull skin. In the figure, a is a ship side skin. b is a longitudinal member between the ship bottom skin f and the double bottom i. c is a longi provided on the wall of the ship. d is a plurality of scaffolding hardware, and is fixed by welding e. The scaffold hardware d is used for installation work or welding work of the outer plate joint between the upper and lower longes c. h is a traffic opening provided in the longitudinal member b. g is a construction hole provided in the ship bottom skin f and the double bottom i. Although the opening h for traffic is opened as it is after the completion of the construction, the construction hole g is closed after the completion of the construction.
[0004]
[Problems to be solved by the invention]
However, since the above-mentioned scaffolding hardware is fixed by welding, when the hull joint work is completed, the scaffolding hardware must be removed by gas cutting etc. to repair the removed part, which takes time to install and remove . Also, the combination of scaffolding plates is not easy to work with and cannot be folded with a ladder, so the overall dimensions are large and the loading and unloading is difficult.
[0005]
The present invention has been devised in view of such problems of the prior art, and when used, it is expanded to a shape along the bent outer plate of the hull, and folded when not in use to fold traffic openings and construction openings. It is an object of the present invention to provide a foldable scaffold device that can be easily carried in and out through a hole and can improve work efficiency.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a folding scaffold device according to the present invention has a pair of upper foundation members and a pair of lower foundation members pivoted on the upper and lower ends of a pair of intermediate foundation members, and a pair of upper foundations. The base end of the upper step board is pivoted between the upper ends of the members, the base end of the lower step board is pivoted between the upper ends of the pair of intermediate base members, and the pair of lower base members is connected with a connecting material. Adhering and detachably connecting the tip or middle of the upper step board and the lower step board with a pair of upper support members, and the pair or lower part of the tip or middle of the lower step board and the pair of intermediate base members When assembled by detachably connecting with a support material, the upper and lower treads are kept horizontal, and each support material is removed and folded.
[0007]
It is preferable that the upper end of each support member is pivotally attached to the upper and lower treads, and the lower end has a bowl-shaped groove so as to be detachably engaged with the pin.
[0008]
Also, the base of the lower tread frame is bent downward, and the upper base member is longer than the lower tread so that when folded, the upper tread wraps around the lower tread It is preferable that they are in close contact.
[0009]
Next, the operation of the present invention will be described. When used, it is folded and transported into the hull through the construction opening provided in the ship bottom skin, and the traffic opening provided in the longitudinal member between the ship bottom skin and the double bottom. On the inner surface of the outer plate in the vicinity of the joint portion of the bent portion, it is extended so as to follow the bent shape of the ship side outer plate. The worker uses the extended scaffold device as a construction scaffold when performing installation work or welding work of the outer plate joint. When not in use, it is folded and lightweight so that it can be carried through a traffic opening and a construction opening, thereby facilitating loading and unloading and improving work efficiency.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a folding scaffold device of the present invention. FIG. 2 is an enlarged view of part a in FIG. 3A and 3B are enlarged views of a portion b in FIG. 1, where FIG. 3A is a side view and FIG. 3B is a view taken along the line AA in FIG. FIG. 4 is a side view showing a folded state of the folding scaffold device. FIG. 5 is a side view showing a usage state of the folding scaffold device. 1 to 5, reference numeral 1 denotes a folding scaffold device. 2 is a pair of lower base members of the folding scaffold device 1, 3 is a pair of intermediate base members, and 4 is a pair of upper base members. The upper end of the lower base member 2 is pivotally attached to the lower end of the intermediate base member 3 with a pin 5, and the lower end of the upper base member 4 is pivotally attached to the upper end of the intermediate base member 3 with a pin 6. Reference numeral 7 denotes a pin pivotally attached to the upper end of the upper base member 4 and the base end 9a of the frame body 9 of the upper tread plate 15. Reference numeral 8 denotes a connecting member that connects the lower base members 2 together. The base end 9a of the frame body 9 of the upper step board 15 is pivoted between the upper ends of the pair of upper base members 4, and the base end 10a of the frame body 10 of the lower step board 15a is bent downward. It protrudes and is pivotally attached between the upper ends of the intermediate base members 3 (FIGS. 1, 2, and 4). The upper base member 4 is longer than the frame body 10 of the lower step board 15a, and when folded, the upper step board 15 can wrap around the lower step board 15a. Further, since the base end 10a of the frame 10 is bent downward and protrudes, the upper step board 15 can go around the lower step board 15a and be brought into close contact with each other. Reference numeral 11 denotes an upper support member that connects the front end of the frame body 9 of the upper step board 15 and the middle of the frame body 10 of the lower step board 15a. As shown in FIG. 3, the lower end of the upper support member 11 has a bowl-shaped groove 11 a and is detachably engaged with a pin 14 provided on the frame body 10. As shown in FIG. 3B, the pin 14 is provided with a slight gap d to facilitate attachment and detachment with the bowl-shaped groove 11a. Reference numeral 12 denotes a lower support member that connects the front end of the frame body 10 of the lower tread plate 15 a and the middle of the intermediate base member 3. Similar to the upper support member 11, the lower end of the lower support member 12 has a bowl-shaped groove (not shown) and is detachably engaged with a pin 14 a provided in the middle of the intermediate base member 3. . Reference numeral 13 denotes a pin pivotally attached to the upper end of the upper support member 11 and the tip end of the frame body 9, and 13 a denotes a pin pivotally attached to the upper end of the lower support member 12 and the tip end of the frame body 10.
[0011]
Reference numeral 16 denotes a ship side skin, and 16a denotes a ship bottom skin. Reference numeral 17 denotes a longi provided on the wall surface of the hull. Reference numeral 18 denotes a weld joint in the longitudinal direction of the hull. The foldable scaffold device 1 is used for installation work such as attachment work or welding work of an outer plate joint between the upper and lower longes 17.
[0012]
Next, the operation of this embodiment will be described. When used, the ship is folded through a construction opening g provided in the ship bottom skin 16a and a traffic opening h provided in a longitudinal member b between the ship bottom skin 16a and the double bottom i. It is carried into the body and is spread on the inner surface of the outer plate near the joint portion 18 of the outer plate bent portion so as to follow the bent shape of the ship side outer plate 16. The worker uses the extended scaffold device 1 as a construction scaffold when performing installation work or welding work of the outer plate joint portion 18. When not in use, it is folded and lightweight so that it can be carried through the traffic opening h and the construction opening g, so that loading and unloading can be facilitated and work efficiency can be improved.
[0013]
The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the gist of the present invention.
[0014]
【The invention's effect】
As described above, the folding scaffolding device of the present invention is expanded to a shape that follows the bent outer plate portion of the hull when used, and is folded so that it can be folded and carried through a traffic opening when not in use. Therefore, there are excellent effects such as easy transportation and improvement of work efficiency.
[Brief description of the drawings]
FIG. 1 is a perspective view of a folding scaffold device of the present invention.
FIG. 2 is an enlarged view of part a in FIG.
FIGS. 3A and 3B are enlarged views of a portion b in FIG. 1, in which FIG. 3A is a side view, and FIG. .
FIG. 4 is a side view showing a folded state of the folding scaffold device.
FIG. 5 is a side view showing a usage state of the folding scaffold device.
FIG. 6 is a conceptual diagram showing a state in which a scaffolding hardware is fixed to a bent portion of a conventional hull skin.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Folding type | formula scaffolding apparatus 2 Lower base member 3 Intermediate base member 4 Upper base member 5, 6, 7, 13, 13a, 14 Pin 8 Connection material 9, 10 Frame 10a Bending part (protrusion part)
11 Upper support member 11a Groove 12 Lower support member 15 Upper step plate 15a Lower step plate 16 Ship side outer plate 16a Ship bottom outer plate 17 Longi 18 Joint portion

Claims (3)

A pair of upper foundation members and a pair of lower foundation members are pivotally attached to the upper and lower ends of a pair of intermediate foundation members, and the base end of the upper step plate is pivotally attached between the upper ends of the pair of upper foundation members. The base end of the lower step board is pivotally attached between the upper ends of the pair of intermediate base members, and the pair of lower base members are fixed with a connecting member, and the tip or middle of the upper step board and the lower step board are connected to each other. When detachably connected with a pair of upper support members, the top or bottom of the lower step plate and the pair of intermediate base members are detachably connected with a pair of lower support members. A foldable scaffolding device characterized in that the tread is kept horizontal and each support member is removed and folded. The upper end of each support member is pivotally mounted to the frame on the stage or the lower treads respectively, to the lower end have a groove in hook-shaped, to the frame of the lower stepping plate, respectively, or, provided in the intermediate base member The foldable scaffolding device according to claim 1, wherein the folding scaffold device is detachably engaged with the pin. The base of the frame of the lower step board is bent downward, and the upper base member is longer than the lower step board. The folding scaffold device according to claim 1 or 2, wherein the folding scaffold device is configured as described above.

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