JPH0711644U - Folding mobile scaffolding - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] It is possible to easily transport a narrow space to an indoor construction site, easily assemble it at a work site in a short time, and it is safe to use and easy to manage. It provides a folding mobile scaffolding that can be loaded and transported more efficiently because of its efficient loading space for transportation to construction sites. A pair of left and right tread plates 11, a rotation support portion 20 that rotatably supports the pair of tread plates around the same axis, and a pair of undulating leg portions 30 that support the pair of tread plates at a predetermined height. In the folding mobile scaffold 1 having
From the expanded state in which the pair of treads are in the same plane, the pair of legs are laid inwardly until they are substantially parallel to the treads, and the pair of treads are bent with the rotation support portion as a fulcrum, Folding mobile scaffolding in which the lower surfaces of the two are folded into a folded state in which they face each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a scaffold used for construction work and the like, and more particularly to a folding movable scaffold used for indoor work such as interior finishing work.

[0002]

[Prior art]

 Conventionally, as a folding movable scaffold, for example, a scaffold stage 80 as shown in FIGS. 14 and 15 is known. This is because the leg support pieces 12, 12 are vertically installed at the corners of the lower surface of the frame body 81 on which the work floor 82 is stretched on the upper surface, so that the outer pipe portions 31, 31 and the inner pipe portions 32, 32 can extend and contract. The upper ends of the leg portions 30, 30 which are formed and have the casters 33, 33 attached to the lower ends thereof are pivotally attached to the leg supporting pieces 12, 12 so as to be capable of undulating, and the leg portions 30, 30 are folded. At this time, the leg supporting pieces 12 and 12 are located within the length of the leg supporting pieces 12, and further, a stacking stabilizing projection 88 is projectingly provided at a required position on the upper corner of the frame 81. It is composed. In order to form a large scaffolding stage by connecting a plurality of scaffolding stages 80, a vertical groove hole forming fitting 83 for engagement is provided on one side end face of the frame 81 so as to project, and on the other end side. An engaging window hole 84 is opened, an arcuate control hole 86 is formed on the upper surface of the frame 81, a pivotal mounting hole 87 is formed, and a locking metal fitting 85 is attached so that it can be moved up and down. A beam rod mounting hole 89 for forming a stage is formed (Japanese Utility Model Publication No. 4-50351).

On the other hand, a scaffolding pedestal 90 as shown in FIG. 16 is known, and outer tube portions 31, 31 are foldable toward the center of the frame 81 at the lower end of the square of a frame 81 framed in a rectangle. The inner pipe parts 32, 32 are attached to the outer pipe parts 31, 31 so as to be adjustable in vertical height, and the dowels 91 are fixed toward the upper side of the frame 81 at regular intervals, and the inner pipe parts 32, 32 are fixed. The casters 33 and 33 with stoppers are provided at the lower end of 32, and the dowels are provided in the outer pipe portions 31 and 31 in the short frame direction of the frame body 81 at fixed intervals on a connecting rod (not shown) (actually). (Kaisho 61-25445).

[0004]

[Problems to be solved by the device]

 However, although the legs 30 and 30 of the conventional scaffolding stage 80 and scaffolding pedestal 90 are constructed so that they can be raised and lowered with respect to the work floor 82, the size of the folded state is the work floor. Because of the length and width of 82, it was inconvenient to carry in a narrow place such as an indoor construction site. In other words, the dimensions were too large to be carried and carried in the doors and elevators in the room. In addition, when moving, they had to be carried by hand, which was a labor-intensive task.

Further, in the conventional scaffolding stage 80 and scaffolding pedestal 90, the frame 81 and the work floor 82 are separate bodies, so it takes time and labor to assemble them at the work site. Moreover, if the assembly is incomplete or there is a dimensional discrepancy between these equipment, there is a risk of overturning during use and it was unsafe. In addition, it is troublesome to manage the number of the frame 81 and the work floor 82, the presence or absence of damage, and the like, which is a problem.

Further, since the conventional scaffolding stage 80 and scaffolding pedestal 90 are mounted on a truck bed from the equipment warehouse or the previous construction site to the next construction site, the length is large, so the loading is difficult. There was a problem that the efficiency of the space was poor and it was not possible to carry that much.

A first object of the present invention is to provide a folding mobile scaffold that can be easily transported even in a narrow space at an indoor construction site.

A second object of the present invention is to provide a folding mobile scaffold that can be easily assembled at a work site in a short time and is safe for use.

A third object of the present invention is to provide a folding mobile scaffold which has an efficient loading space for transportation to a construction site, can be transported extra by that amount, and is easy to manage. .

[0010]

[Means for Solving the Problems]

 In order to solve the above problems, a first invention of the present application is to provide a pair of left and right footboards, a rotation support portion that rotatably supports the pair of footboards about the same axis, and a predetermined height for the pair of footboards. In a folding mobile scaffolding having a pair of undulating legs supported by a pair of legs, the pair of legs are substantially inwardly aligned with the footboard from an expanded state in which the pair of legs are coplanar with each other. The treads are laid down so that they are parallel to each other, and the pair of treads are folded around the rotation supporting portion as a fulcrum, and the lower surfaces of the treads are folded to face each other. Here, the legs may be of fixed length, but the versatility can be enhanced by making the height adjustable so that it can expand and contract as shown in the figure.

In the second invention of the present application, a pair of left and right treads, a rotation support portion that rotatably supports the pair of treads around the same axis, and an undulating support that supports the pair of treads at a predetermined height. In the folding mobile scaffold having a pair of legs, each leg length of the pair of legs is formed to be smaller than the length of the tread to which the legs are attached.

According to a third invention of the present application, in the first or second invention of the present application, the axis center of the rotation support portion is displaced from a fixed position of the hinge to the tread plate to an end contact line of both tread plates (hereinafter “ The hinge is referred to as "eccentricity"), and the hinge has a rotation fixing means that rotates from the expanded state to the folded state and that is fixed in rotation in the expanded state and the folded state.

A fourth invention of the present application is the same as the first to third inventions of the present application, wherein a pair of canes for restricting ups and downs of the legs are provided, and the pair of canes in the folded state are the footboards. That is, they are folded so as to be unevenly distributed with respect to the longitudinal centerline.

A fifth invention of the present application is the auxiliary wheel for transportation according to the first to fourth inventions of the present application, which is for transporting in the folded state, wherein the auxiliary auxiliary wheel is retractable from a side surface of the tread plate. Is provided.

A sixth invention of the present application is the horizontal connecting means according to the first to fifth inventions of the present application, for connecting tread plate portions, which are a pair of tread plates of adjacent folding movable scaffolds, to each other. Is connected by locking the end beams of the tread plate portion or the locking members biased by the spring elastic force for sandwiching and fixing the connecting and fixing members to each other.

[0016]

[Action]

 According to the present invention, from the expanded state in which the pair of treads are in the same plane, the pair of legs are inwardly laid inward so as to be substantially parallel to the treads, and the pair of treads support the rotation support portion as a fulcrum. And the lower surfaces of the treads are folded in such a manner that the lower surfaces of the treads face each other, and the leg lengths of the pair of legs are formed to be smaller than the length of the treads to which the legs are attached. As it is compactly folded, it can be transported even in a narrow space inside the building construction site, and can be carried in the elevator. It can be set up quickly at construction sites, etc., and is stable with no risk of rollover etc. when used. The cargo space can be effectively used even when transported to a construction site, etc., and the extra cargo can be transported, and it does not require management.

The rotation support part is a hinge having a shaft that is eccentric from the surface of the tread plate, and since this hinge rotates from the expanded state to the folded state, the pair of left and right tread plates have a predetermined interval in the folded state. However, the left and right legs and the cane can be stored between them. Since the hinge has a rotation fixing means for fixing the rotation in the expanded state and the folded state, it can be safely used as a work table in the expanded state, and the left and right legs and the cane can be used in the folded state. Upon receipt, the left and right treads will not open each other.

The folding mobile scaffold of the present invention is provided with a pair of canes for restricting the ups and downs of the legs, and in the folded state, they are spaced apart from each other with respect to the longitudinal centerline of the tread. The pair of canes do not interfere with each other in the storage location when they are folded.

Further, the folding mobile scaffold of the present invention is an auxiliary wheel for transportation for transportation in a folded state, and since the auxiliary wheel for transportation which is retractable from the side surface of the step plate of the tread plate is provided, The worker can carry it by hand when carrying it indoors.

The horizontal connecting means for connecting the tread plates of the adjacent folding movable scaffolds locks the end beams of the tread parts or the connecting and fixing members that are biased by spring elastic force with each other. Since they are connected by means of the above, the adjacent tread parts can be connected with each other by a simple mechanism, and they will not come off during use, and the required work area can be secured.

[0021]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 13 are views for explaining an embodiment according to the present invention.

FIG. 1 is an overall front view, and FIG. 2 is a right side view thereof. The folding mobile scaffold according to the present invention includes a footboard portion 10, a rotation support portion 20, a leg portion 30 and a cane portion 40. In the step board part 10, a left step board 11 and a right step board 11 'are connected by a hinge 21 which is a central rotation support part. Auxiliary wheels 60 for transportation are provided on one side surface of the footboard portion 10 in the width direction, and leg support pieces 12 are provided on the bottom surfaces of both ends in the longitudinal direction. As described above, the rotation supporting portion 20 is composed of the hinges 21 that connect the left and right treads 11, 11 ', and is provided at two places near both ends in the width direction of the central part, and the rotation axis thereof is from the surface of the treads 11, 11'. Eccentricity is provided. The leg portion 30 supports the tread plate 11 at a predetermined height and has a retractable structure. The upper ends of the leg portions 30 are supported by the leg support pieces 12 and 12 provided at the ends of the left and right tread plates 11 and 11 '. The casters 33, 33 are rotatably rotatably supported and have brakes at their lower ends. The cane portion 40 is a pair of canes 41, 41 provided to be spaced apart from each other based on the center line 43, and both ends of each cane 41 are near the hinge 21 of the tread 11 and the lower end of the leg 30. Each of them is axially supported by a support piece 46 at the center of the lateral crosspiece. Further, the canes 41, 41 are axially supported so as to be able to be folded in two at a central folding portion 42, and the folding portion 42 is incorporated by the interlocking action of a panel plate and an L-shaped cam. It is bent in two by manually pressing on the end side of the footboard 11, and when it is returned to its original position it is fixed and acts as a brake.

FIG. 3 is a front view of the folding mobile scaffold of the present invention in a folded state as seen from the front. The step plates 11 and 11 'are substantially parallel to each other at a predetermined interval, and the legs 30 and 30 are housed therebetween.

FIG. 4 is a cross-sectional view showing a folded state at the central portion including the canes 41, 41 viewed from the same direction as in FIG. The respective walking sticks 41, 41 are stored between the step plates 11, 11 'at a predetermined distance from each other.

FIG. 5A is a bottom view in which the leg portion 30 is folded about the left side portion from the center of the folding mobile scaffold of the present invention, and FIG. 5B is a left side view thereof. The hinges 21 and 21 are provided near both ends of the central portion, the leg portion 30 is folded, and the magnet unit 71 prevents the leg portion 30 from swinging at the central portion of the horizontal rail 34. The cane 41 is folded to a position spaced apart from the center line 43 by a predetermined distance 44. Two auxiliary transportation wheels 60, 60 are provided at one end of the step plate. A plurality of horizontal connecting means 50 are provided on the three sides of the widthwise both ends and the lengthwise end of the tread 11. Although the right side portion from the center of the folding mobile scaffold of the present invention is not shown, it is point-based on the center point 45 from this figure except for the hinges 21 and 21 and auxiliary transportation wheels 60 and 60. It has a structure of.

FIG. 6 is a view mainly for explaining the step plates 11 and 11 ′, (A) is a plan view, and (B) is a front view thereof. Since the tread portion itself is symmetrical, the left tread 11 will be described. The tread plate 11 may be composed of one member, but depending on the required area, it may be composed of, for example, three member tread plate members 11a, 11b and 11c, and the tread plate 11 has a sliding surface. A stop projection 17 is provided. Two leg support pieces 12, 12 are provided at one end of the footboard 11 in the longitudinal direction of the lower surface, and two auxiliary transportation wheels 60, 60 are provided at one end of the footboard 11 in the width direction. Each footboard member 11a, 11b, 11c can be diverted to a temporary scaffolding plate having an end beam 18 and an intermediate beam 19 at both ends and the central part (shown in FIG. 5).

FIG. 7 is a view for further explaining the tread plate 11 in FIG. 6, and is an enlarged sectional view of an essential part showing a connecting structure of adjacent tread plate members 11a and 11b as an example of a connecting structure of the tread plate members. The footboard members 11a and 11b are fixed by bolts 13 and nuts 14 and spring washers 15 at the end beams 18 and 18, respectively. In FIG. 5, the connecting position of the step board members is indicated by numeral 16.

FIG. 8 shows a preferred example of the auxiliary transportation wheel 60, (A) is a front view and (B) is a side view thereof. An inner frame 64 having wheels 61 mounted in an outer frame 63 fixed to the end beam 18 is attached to the side face 18a of the end beam so as to be retractable. The inner frame 64 is constantly urged by the coil spring 65 toward the side projecting from the side surface 18a of the end beam, and the pin 67 fixed to the handle shaft 62 is moved along the key groove 66. Although it can be fixed so that it can be retracted and retracted, it may be simply fixed. Further, the auxiliary wheel 60 for transportation is projected just before the scaffold is folded, and is fitted when the scaffold is used.

FIGS. 9A and 9B are views for explaining the mechanism of the rotation support portion 20, where FIG. 9A is a front view and FIG. 9B is a sectional view in the folded state. The hinge 21 of the rotation support portion 20 includes a left support fitting 23, a right support fitting 24, and a shaft 25 with a pin. The left support fitting 23 has two hanging pieces 23b and 23c sandwiching the flange portion 23a and the slit 23d. The flange portion 23a of the left support fitting 23 is fixed to the step board 11 by a joining means such as welding. The right support fitting 24 has one hanging piece 24b, and the hanging piece 24b is inserted in the slit 23d of the left supporting fitting 23 so as to be rotatable about the shaft 25. Therefore, the left support fitting 23 and the right support fitting 24 rotate about the shaft 25 inserted in the center hole 26 formed at the center of the hinge 21. The shaft 25 includes a pin coupling piece 25b coupled to the shaft 25, a pair of pins 25a and 25a coupled to the pin 25a, a handle 25c, and a pair of pins 25a and 25a of the shaft 25. It has a spring 25h which is pulled in the direction of fixing in 27, a nut 25f and a washer 25g which are fitted to the male screw 25d of the shaft 25, and is prevented from coming off by a split pin 25e. FIG. 9B is a cross-sectional view showing the relative positional relationship between the pair of pins 25a, 25a and the left and right support fittings 23, 24 when the bottom surfaces of the footboards 11 and 11 'face each other.

FIG. 10 is a front view of the main part showing the left leg portion 30 and a section near the lower portion thereof. The leg portion 30 is provided with an outer pipe portion 31, an inner pipe portion 32, and a caster 33 that can be freely braked. The outer pipe portion 31 has one height adjusting hole 31a, and the inner pipe portion 32 has a plurality of height adjusting holes 32a. The inner pipe portion 32 is vertically moved in the outer pipe portion 31. And adjust the holes 31a and 32a for height adjustment at the required height position, and operate the left and right lock pins at the same time with the individual lock pins or the handle 35 disclosed in the utility model registration application of the same applicant on the same day. The structure is such that it can be fixed by leg fixing means 36 or the like. The upper ends of the legs 30 are rotatably supported by the leg support pieces 12. Since the caster 33 is attached to the lower end, the folding movable scaffold can be freely moved out and out.

FIG. 11 is an enlarged view of the leg steady rest 70 shown in FIG. 5, where (A) is a bottom view of a main part and (B) is a side view thereof. A magnet unit 71 is attached to the central portion of a horizontal rail 34 provided near the lower end of the outer pipe portion 31 of the leg portion 30 and is attracted between the magnet 71a and an iron plate 72 attached to the intermediate beam 19 of the step plate member 11b. As a result, the leg 30 is steady.

12A and 12B show horizontal connecting means 50 for adjoining tread boards of a plurality of folding movable scaffolds to be horizontally attached, FIG. 12A is an enlarged sectional view of an essential part, and FIG. The horizontal connecting step 50 is used for connecting and laying a plurality of folding movable scaffolds according to the present invention in a horizontal or vertical direction. In the locking member 51, the bolt 55 is inserted through the hole 51b provided at one end thereof and the hole 51b provided in the auxiliary metal fitting 54, and the locking member 51 is moved by the coil spring 57, nut 56 and washer 58 to the step board 11 side. Adjacent to a plurality of folding movable scaffolds that are biased to the auxiliary metal fitting 54 and the locking piece 51a provided on the other side of the locking member 51 to sandwich the end beams 18, 18 of the tread 11 and put them sideways. The footboards 10 are connected to each other on the back side. As a result, the required work area can be secured.

13A and 13B show horizontal connecting means 50 between the end sides of the treads 11, where FIG. 13A is an enlarged cross-sectional view of a main part, and FIG. 13B is a bottom view thereof. The parts having the same functions as those in FIG. 12 are designated by the same reference numerals and the description thereof will be omitted. Reference numeral 53 is a connecting and fixing member arranged between the beams 18 and 19.

Since the folding mobile scaffold according to the present invention has the above-mentioned structure, the inner tube of the extendable leg portions 30, 30 is first changed from the expanded state to the folded state. The part 32 is inserted into and contracted from the outer tube part 31, then the leg support pieces 12, 12 are used as fulcrums, and the bent parts 42, 42 of the canes 41, 41 are pressed and bent inward, and The legs 30 and 30 are turned inward by turning the legs 30 and 30 inward until the legs 30 and 30 are substantially parallel to the footboards 11 and 11 '. Next, the handles 25c of the hinges 21, 21 at the center of the step plate 10 are pulled outward to open the left and right step plates 11, 11 'in a mutually rotatable state, and the lower surfaces of the left and right step plates 11, 11 face each other. The handle 25c is rotated until it is folded up to a substantially parallel position, and the pair of pins 25a, 25a of the hinges 21, 21 are fitted and fixed in the fitting holes 27 of the left and right support fittings, so that the folded state is achieved. At this time, the both leg portions 30, 30 are prevented from swinging toward the step plate member side by the attraction force of the magnet unit 71. The folding movable scaffold according to the present invention folded in this way has a length dimension of about one half of the total length of the tread portion 10 in the expanded state, and thus is compactly folded.

The folding mobile scaffold according to the present invention can be conveniently manufactured by manufacturing it with an aluminum alloy. In particular, since the equipment such as the footboard 11, the outer pipe portion 31, the inner pipe portion 32, or the cane 41 is made of an extruded aluminum alloy, the shape of the equipment cross section can be freely selected and the strength can be improved. Yes, it is possible to obtain lightweight equipment.

The present invention is not limited to the embodiment described above. For example, in the supporting structure of the upper end of the leg portion 30 and the leg supporting piece 12 without providing the cane portion 40 as in the present embodiment, The structure may be such that it can be raised and lowered and the rotation is restricted when the legs are upright. Further, the leg portion 30 does not have to be extendable and contractible as in the present embodiment, and the leg length may have a fixed dimension, and may be smaller than the longitudinal length of the tread plate 11 which is one side of the tread plate portion 10. Further, although the footboard 11 is composed of a combination of three members in this embodiment, it may be of an integral structure.

[0037]

[Effect of device]

 As described in detail above, according to the first and second inventions of the present application, the left and right legs are in a state in which the pair of treads are in the same plane and are in an inflated state until they are substantially inward with the treads inward. Then, the pair of treads are folded down with the rotation support portion as a fulcrum, and the lower surfaces of the treads are folded so as to face each other.Furthermore, each leg length of the pair of leg parts is attached with the leg part. Since it is formed to be smaller than the length of the tread that is used, it can be compactly folded to about half of the total length of the tread in use, and can be transported even in a narrow place. It can be done, and it does not require management. It is stable during use, and the cargo space can be effectively used when transporting to construction sites, etc., and it can be transported extra.

According to the third invention of the present application, in the first invention or the second invention of the present application, the rotation supporting portion is a hinge having a shaft eccentric from the surface of the step plate, and the hinge is folded from the expanded state. In addition to the effect of the first invention or the second invention of the present application, the pair of left and right treads has a predetermined rotation state in the folded state, since the rotation fixing means is capable of rotating to the state and fixing the rotation in the expanded state and the folded state. There is a space between them, and the left and right legs and canes can be stored between them. In the expanded state, they can be safely used as a workbench. In the folded state, the left and right legs and canes can be stored and left and right. The treads never open to each other.

According to a fourth invention of the present application, in the first to third inventions of the present application, a pair of canes for restricting the ups and downs of the legs are provided. Since they are separated from each other with respect to the directional center line, in addition to the effects of the first to third inventions of the present application, the pair of canes do not interfere with each other in the retracted position in the folded state.

According to the fifth invention of the present application, in the first to fourth inventions of the present application, there is provided an auxiliary transportation wheel for transportation in a folded state, the auxiliary transportation wheel being retractable from a side surface of the tread plate. Since the wheels are provided, in addition to the effects of the first to fourth inventions of the present application, an operator can manually carry the vehicle indoors without holding it.

According to a sixth invention of the present application, in the first to fifth inventions of the present application, there is provided horizontal connecting means for connecting the tread plates of a plurality of the folding movable scaffolds adjacent to each other, which is an end beam of the tread plate part. Alternatively, the connecting and fixing members are sandwiched and fixed to each other by being locked by the locking members urged by the spring elastic force, so that in addition to the effects of the first to fifth inventions of the present application, they are horizontally mounted. The footboards of multiple adjacent folding mobile scaffolds can be connected to each other with a simple mechanism, and the necessary work area can be secured without coming off during use.

[Brief description of drawings]

FIG. 1 is an overall front view of an embodiment of a folding mobile scaffold according to the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a front view of the apparatus in the expanded state of FIG. 1 folded and laid down.

FIG. 4 is a cross-sectional view of a folded state including a center cane seen in the same direction as FIG.

FIG. 5 is a bottom view in which the legs of the left footboard portion of the folding mobile scaffold of the present embodiment are folded.

FIG. 6 is a diagram mainly illustrating the step plate of the present embodiment, and FIG.
Is a plan view and (B) is a front view thereof.

FIG. 7 is an enlarged cross-sectional view of an essential part showing the connection structure of the left and right step plate members in FIG.

FIG. 8 shows an auxiliary wheel for transportation of the present embodiment, (A) is a front view and (B) is a side view thereof.

FIG. 9 is a view for explaining the mechanism of the rotation support portion of this embodiment,
(A) is a front view and (B) is a sectional view in the folded state.

FIG. 10 is a front view of a main part showing a left leg portion of the present embodiment and a section near a lower portion thereof.

11A and 11B show a leg steady rest of the present embodiment, FIG. 11A is a bottom view of a main portion, and FIG. 11B is a side view thereof.

FIG. 12 is a horizontal cross-sectional view of a plurality of scaffolds according to the present embodiment, which are horizontally connected between adjacent tread plates, (A) is an enlarged cross-sectional view of a main part, and (B) is a bottom view thereof.

FIG. 13 is a horizontal cross-sectional view showing a horizontal connecting means between a plurality of scaffolds according to the present embodiment which are laterally mounted and adjacent to the side walls of the footboard parts, and FIG.

FIG. 14 is a front view illustrating a folding movable scaffold according to a conventional technique.

15 is a perspective view of an essential part of FIG.

FIG. 16 is a front view illustrating another folding mobile scaffold according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Folding movable scaffolding 10 Footboard 11 Footboard 12 Leg support piece 18 End beam 20 Rotation support 21 Hinge 22 Rotation fixing means 30 Leg 31 Outer tube 32 Inner tube 33 Castor 40 Cane 41 41 Cane 50 Horizontal connection means 51 Locking member 53 Connection fixing member 60 Auxiliary wheel for transportation 61 Wheel 70 Leg steady rest 71 Magnet unit

Claims (6)

[Scope of utility model registration request] 1. A pair of left and right treads, a rotation support portion that rotatably supports the pair of treads around the same axis, and a pair of undulating legs that support the pair of treads at a predetermined height. In a folding mobile scaffold having a pair of footboards, the pair of footboards are laid inward from each other in an expanded state where the footboards are in the same plane, and the leg portions are laid inward so as to be substantially parallel to the footboards. Is a folding movable scaffold, characterized in that it is folded around the rotation supporting portion as a fulcrum, and the lower surfaces of the treads are folded in a state of being opposed to each other. 2. A pair of left and right treads, a rotation support portion that rotatably supports the pair of treads about the same axis, and a pair of undulating legs that support the pair of treads at a predetermined height. In the folding mobile scaffold, the leg length of each of the pair of legs is smaller than the length of the tread to which the legs are attached. 3. The rotating support portion according to claim 1, wherein the rotary support portion is a hinge having a shaft that is eccentric from the surface of the tread, and the hinge rotates from the expanded state to the folded state and A foldable mobile scaffold comprising rotation fixing means for fixing rotation in an open state and a folded state. 4. The pair of canes according to claim 1, wherein a pair of canes for restricting ups and downs of the legs are provided, and the pair of canes in the folded state are mutually relative to a longitudinal centerline of the tread plate. A foldable mobile scaffold characterized by being separated and folded. 5. The transport auxiliary wheel for transporting in the folded state according to any one of claims 1 to 4, wherein the transport auxiliary wheel is provided so as to be retractable from a side surface of the tread plate. Foldable mobile scaffolding. 6. The horizontal connecting means for connecting stepping plate parts, which are a pair of stepping plates of adjacent folding movable scaffolds, to each other, wherein the horizontal connecting means is an end beam of the stepping plate part, or A foldable mobile scaffold, characterized in that it is connected by locking a locking member that is biased by a spring elastic force for sandwiching and fixing the connecting and fixing members.