JP2003105967A - Temporary scaffolding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temporary scaffolding allowing a ladder to be installed in an optional direction. SOLUTION: This temporary scaffolding is constructed by providing scaffolding boards 1 in a story state, connecting the upper and lower scaffolding boards 1 by the ladders 5, and providing each scaffolding board 1 with a hatch 3 and a working floor 4 for opening/closing the hatch 3. Ladder fitting brackets 24, 24, 25, 25 are disposed at four corner parts in the hatch 3. These four brackets are so set that the distance between the opposed faces of the laterally opposed brackets 24, 25 and the distance between the opposed faces of the longitudinally opposed brackets 24, 24 and 25, 25 are almost equal and that these distances are almost equal to the breadth of the ladder 5. Pinholes allowing the entry of locking pins 11, 12 of the ladder 5 are disposed at the opposed faces of the laterally opposed brackets 24, 25 and the opposed faces of the longitudinally opposed brackets 24, 24 and 25, 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary scaffold used at a construction work site, and more specifically, scaffolding plates are provided in a vertical hierarchy, and upper and lower scaffolding plates are connected by a ladder and each scaffolding is connected. The present invention relates to a erection scaffold in which a hatch serving as an entrance and exit from a ladder is provided on a board and a work floor for opening and closing the hatch is pivotally attached to a scaffold board.

[0002]

2. Description of the Related Art Conventionally, a hatch provided on a scaffolding plate of a temporary scaffolding as described above is provided with a bracket for mounting a ladder on either end of the hatch, and a pin of the bracket is attached to the hatch. By inserting locking pins for ladder attachment, which respectively project from both side surfaces of the upper end portion of the ladder, into the hole, the ladder is attached such that the width direction of the ladder is orthogonal to the longitudinal direction of the scaffold plate. Thus, when the ladder is attached to the hatch of the scaffolding board in the direction orthogonal to the longitudinal direction of the scaffolding board, the scaffolding having a wide width (the scaffolding width is 900 mm).
(~ 1200 mm), it was sometimes impossible to pass by the ladder on the scaffolding board on which the ladder was installed.

The present invention provides a temporary scaffold in which a ladder can be attached to a hatch of a scaffold plate in the longitudinal direction of the scaffold plate and in a direction orthogonal to the scaffold plate, and the ladder can be installed in any direction depending on the situation of the scaffold. The purpose is to provide.

[0004]

The invention according to claim 1 is
A scaffolding board 1 is vertically arranged in a hierarchical manner, the scaffolding boards 1 are connected to each other by a ladder 5, and each scaffolding board 1 is provided with a hatch 3 serving as an entrance and exit from the ladder 5, and a work floor for opening and closing the hatch 3. In the erection scaffolding provided with 4, the ladder mounting brackets 24, 2 are provided at approximately four corners of the hatch 3.
4, 25, 25 are arranged, and these four brackets have a distance A between the facing surfaces of the brackets 24, 25 facing in the left-right direction along the longitudinal direction of the scaffolding plate 1 and a bracket 24 facing in the front-back direction. , 24 and 25, 25 are set to be substantially equal to the distance B between the facing surfaces, and the distances A and B are set to be substantially equal to the lateral width W of the ladder 5, and the facing surfaces of the brackets 24 and 25 facing left and right and On the opposing surfaces of the brackets 24, 24 and 25, 25 that are opposed to each other in the front-rear direction, locking pins 11 and 12 for attaching a ladder that project from both side surfaces of the ladder 5 that is inserted between the opposing surfaces and stand upright are provided. It is characterized in that pin holes a and b which can be inserted are respectively provided.

According to a second aspect of the present invention, in the erected scaffold according to the first aspect, the pin holes b are provided on the facing surfaces of the brackets 24, 24 facing the front and rear on either the left or right side, and the front and rear on the other side. The arrangement pitch P with the pin holes b provided on the facing surfaces of the brackets 25, 25 facing each other is such that the ladder-mounting upper-stage locking pin 11 provided at the upper end of the ladder 5 and the upper-stage locking pin 11 are provided. Lower locking pin 12 provided below the pin 11
It is characterized in that it is set so as to be substantially equal to the arrangement pitch Q of and.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a temporary scaffold in which scaffolding boards 1 are provided in a plurality of upper and lower layers. The upper and lower scaffolding boards 1 are connected by ladders 5 and ladders are attached to each scaffolding board 1. A hatch 3 serving as an entrance / exit from 5 is provided, and a work floor 4 for opening / closing the hatch 3 is provided. FIG. 2 is a perspective view of the scaffolding plate 1 showing the work floor 4 in the closed position.
FIG. 4 is a perspective view of the scaffolding plate 1 with the work floor 4 in the open position, and FIG. 4 is an enlarged plan view of the work floor 4 portion of the scaffolding plate 1. 5 is an enlarged bottom view of the work floor 4 portion of the scaffolding board 1, and FIG. 6 is a partially enlarged view of FIG.

The structure of the scaffolding plate 1 will be described below.
At both ends of the scaffolding plate body 2, locking hooks 7 that are locked to the cross members 6 of the scaffolding building frame are projected, and the hatch 3 is provided on one end side of this scaffolding plate body 2. A work floor 4 for opening and closing the hatch 3 is pivotally attached to the scaffolding plate 1 so as to open and close along the transverse direction of the scaffolding plate 1. The work floor 4 is provided with pivotal attachments 8 and 9 which are attachable to and detachable from the scaffolding plate main body 2 before and after the opening and closing direction thereof, and either one of the front and rear pivotal attachments 8 or 9 is in an escape state. The other pivot 9
Alternatively, the work floor 4 is pivotally attached to the scaffolding plate main body 2 so that the work floor 4 can be opened and closed from both the front and the rear in the opening and closing direction by maintaining the pivoting state. In FIG. 3, the pivotally attached portion 8 is in the pivotally attached state and the pivotally attached portion 9 is in the escaped state.

As shown in FIGS. 1, 3 and 5, ladder mounting brackets 24, 25 are provided at approximately four corners of the hatch 3 provided on the scaffolding plate body 2. Figure 8
The arrangement state of the four ladder mounting brackets 24, 24, 25, 25 arranged in the hatch 3 is shown. This Figure 8
As can be seen from the figure, among the opening peripheral edges of the front and rear side edges a and b and the left and right side edge c and d of the hatch 3, the brackets 24,
25 is attached to each of the brackets 24 and 25. Locking pins 11 and 1 for attaching the ladder protruding from both side surfaces of the ladder 5 are attached to the brackets 24 and 25, respectively.
Pin holes a and b into which 2 (see FIGS. 9 and 10) can be inserted are provided.

As shown in FIG. 8, the four brackets 24, 24, 25, 25 arranged on the periphery of the opening of the hatch 3 have a distance A between the facing surfaces of the brackets 24, 25 facing left and right, Front and rear brackets 24, 24 and 2
The distance B between the facing surfaces 5 and 25 is set to be substantially equal, and the distances A and B are set to be substantially equal to the lateral width W of the ladder 5 (see FIG. 9). Then, the facing surfaces of the brackets 24 and 25 facing left and right and the bracket 2 facing front and back
Pin holes a and b, into which the locking pins 11 and 12 for ladder attachment, which respectively project from both side surfaces of the ladder 5 can be inserted, are provided on the opposing surfaces of 4, 24 and 25 and 25, respectively.

The four brackets 24, 24,
Of the 25 and 25, for example, the pin hole b provided on the facing surface of the brackets 24 and 24 facing the front and rear on the left side in FIG. 8, for example, the bracket 25 facing the front and rear on the other side, that is, the right side. , 25 are arranged at a pitch P with respect to the pin holes b provided on the opposing surfaces of the ladder 5 and the upper-stage locking pin 11 for mounting the ladder provided at the upper end of the ladder 5 and below the upper-stage locking pin 11. It is set to be substantially equal to the arrangement pitch Q (see FIG. 9) with the lower-stage side locking pin 12 arranged in.

FIG. 9 is a front view of the ladder 5, FIG. 10 (A) is a partially enlarged front view of the ladder 5 shown in FIG. 9, (B) is its left side view, and (C) is its plan view. Is. As can be seen from FIG. 9, the ladder 5 comprises a pair of columns 31, 31 on both sides having a length slightly shorter than the length of the scaffolding plate main body 2 and treads 32 horizontally laid at regular intervals. A locking pin 11 is provided on the upper end of the locking pin 31 so as to project from the outer surface thereof by the urging force of the coil spring 33, and the outer surface of the locking pin 11 is also separated from the projecting position of the locking pin 11 by Q. The locking pin 12 is provided so as to project from the coil spring 33 by the biasing force of the coil spring 33.

The respective locking pins 11 and 12 are shown in FIG.
As can be seen from (C), the column 31 and the bracket 34 attached to the column 31 are penetrated and supported so as to be slidable in the horizontal direction, and the coil spring 33 causes the tip of the pin to project from the outer surface of the column 31. Is urged by. Further, the inner ends of the locking pins 11 and 12 are bent into L-shapes to form operation portions 11a and 12a, and the ladder 5 is attached to the brackets 24 and 25 in the hatch 3, Or, at the time of removal, this operation portion 11a, 12a
Is pulled toward the front against the urging force of the coil spring 33, the tip portions of the locking pins 11 and 12 can be retracted. The locking pin 11 on the upper end side of the ladder 5 and the locking pin 12 on the lower side thereof have exactly the same structure.

Both pivotally attached portions 8 and 9 provided on the front and rear sides of the work floor 4 in the opening and closing direction have the same structure.
As can be seen from FIGS. 5 and 6, a pair of pivot rods 13 are coaxially and slidably arranged at the front and rear ends of the work floor along the longitudinal side ends of the scaffold plate body. , 13 and are urged by the coil springs 14 so that the outer end portions 13a of the rods 13 always protrude from the left and right ends of the work floor 4, respectively. 13, 13 protruding end 13
a and 13a enter the rod supporting holes 15 and 15 provided on the side of the scaffolding plate 2 (see FIG. 7), respectively, so that they are pivotally attached to each other, and the a and 13a are provided at the inner end portions of both pivot rods 13 and 13, respectively. By pulling the operated gripping portions 13b, 13b against the biasing forces of the coil springs 14, 14,
The projecting end portions 13a, 13a of both the pivot rods 13, 13 come out of the rod supporting holes 15, 15 respectively, and are in an escaped state.

The rods 13 of the pair of pivot rods 13 and 13 constituting the pivot portions 8 and 9 are slidably supported by slide support members 16 and 17 attached to the scaffold plate body 2. Then, each pivot rod 13
The operation gripping portion 13b provided at the inner end portion of the rod is formed by folding the inner end portion of the rod 13 into a U-shape, and as shown in FIG. The coil spring 14 is fitted between the fixed pin 18 attached to the end of the slide support member 16 and the one end face of the slide support member 16.
The a is projectingly biased from the left and right ends of the work floor 4, and the projecting length thereof is limited by the fixing pin 19 that abuts on the other end surface of the slide supporting member 16.

Therefore, when the respective pivotally attached portions 8 and 9 are brought out from the scaffolding plate body 2, both pivot rods 13 and 13 are provided.
When the operating gripping portions 13b, 13b are pulled toward each other against the urging force of the coil springs 14, 14 as shown by the arrows in FIG. 6, the protruding end portions 13a, 13 of the both pivot rods 13, 13 are pulled.
a escapes from the rod support holes 15, 15 of the scaffolding plate body 2, respectively, and is in an escaped state. In this case, as shown in FIG. 6, the floor board 4a forming the working floor 4 has rods 1 for both pivots.
Since the finger insertion openings 20 are formed in the portions of the operation grips 3b and 13b where the operation grips 13b and 13b are arranged, the fingers can be inserted from either the front side or the back side of the work floor 4, The operating grips 13b and 13b can be easily and easily pulled up.

Further, as shown in FIGS. 7A and 7B, engaging slant end faces 21 are formed on the outer end portions 13a of the respective pivot rods 13, and the front and rear pivot joint portions 8 are formed. , 9, one of them, for example, the pivoting part 8 is pivoted, and the other pivoting part 9 is in the escape state, and when the work floor 4 is closed from the open state, the other pivoting part 9 is configured. As shown in FIG. 7A, the slanted end face 21 of the pivot rod 13 is pressed against the entrance portion of the rod support hole 15 provided on the scaffolding plate body 2 side from above to engage the slant end face 21. The wedge action of the slant end face 21 pulls the pivot rod 13 against the coil spring 14, and the outer end portion 13a of the rod 13 projects into the rod support hole 15 as shown in FIG. 4 is automatically locked in the closed position.

In actual use, the work floor 4 with one pivotally attached portion 8 in the pivotally attached state and the other pivotally attached portion 9 in the escaped state is moved from the upright state to the closing direction as shown in FIG. If pushed down, both pivot rods 13 and 1 on the side of the pivoting portion 9
3, the protruding end portions 13a, 13a of the
By means of 1, the rod will be inserted into the rod support holes 15, 15 and automatically locked in the closed position. In addition, as shown in FIG. 7, the rod support hole 15 into which the outer end portion (protruding end portion) 13 a of each pivot rod 13 is projected and supported is provided with an inner concave portion of the end lateral frame 22 of the scaffolding plate body 2. The step portion 22a is a hole formed concentrically in the nut member 23 fixed at a required position.

In the temporary scaffold configured as described above, the opening / closing operation of the work floor 4 provided on each scaffold plate 1 will be described. As shown in FIG. When the work floor 4 which is maintained in the pivoted state and is in the closed position is released from the pivotal portion 9 side as shown in FIG. 3, both the pivot rods 1 on the pivotal portion 9 side are opened.
When the operation gripping portions 13b and 13b of the shafts 3 and 13 are gripped and pulled together, the projecting end portions 13 of the pivot rods 13 and 13 are pulled.
a and 13a are rod support holes 15 and 15 on the scaffolding plate body 2 side.
Since it escapes from the work floor 4, it is sufficient to raise the work floor 4 on the side of the pivoting portion 9 to take the standing posture as shown in FIG. When the work floor 4 held in this standing posture is tilted in the closing direction, the projecting end portions 13a, 13a of the two pivot rods 13, 13 on the pivoting portion 9 side are moved to the corresponding positions, as described with reference to FIG. The rod supporting holes 15 and 15 are formed by the engaging slant end surfaces 21 and 21.
Plunge into and is automatically locked in the closed position.

When the work floor 4 locked in the closed position as described above is to be opened from the side of the pivotal joint 8 on the side opposite to that shown in FIG. Operating grips 13b, 13 of the pivot rods 13, 13
When b is gripped and pulled, the projecting end portions 13a, 13a of both pivot rods 13, 13 are moved to the scaffolding plate body 2 in the same manner as described above.
Since it escapes from the rod support holes 15 and 15 on the side, the pivotal portion 8 side of the work floor 4 may be raised to be in the standing posture as described above.

When the work floor 4 is to be removed from the hatch 3, the operating grips 13b and 13b of the pivot rods 13 and 13 of the pivot portion 8 on one side of the work floor 4 and the other side are provided. If the operation gripping portions 13b and 13b of the pivot rods 13 and 13 of the pivot portion 8 are simultaneously grasped, both pivot portions 8 and 9 will be in the escaped state with respect to the scaffolding plate body 2, so that the scissor plate 8 is pulled up as it is. As a result, the work floor 4 can be easily and easily removed from the hatch 3.

Next, in a temporary scaffolding as shown in FIG. 1, when the upper and lower scaffolding boards 1 are connected to each other by a ladder 5, the method of attaching the ladder 5 in the hatch 3 and the ladder 5 on the back side of the scaffolding board 1 A storage method will be described with reference to FIGS. 11 to 15.

FIG. 11 shows a ladder 5 whose width direction is orthogonal to the longitudinal direction of the scaffolding plate 1, like a ladder 5 connecting the middle-side scaffolding plate 1 and the lower-side scaffolding plate 1 shown in FIG. It shows the case where it is attached along the right side edge D of the opening edge of the hatch 3 in this direction, and in this case, as shown in FIG. The upper end side of the ladder 5 is inserted at a position (see FIG. 8) along the opposing pin holes b, b between the brackets 25, 25, and the locking pins 11, 11 projecting from both side surfaces of the ladder 5 are inserted. The brackets 25, 25 may be inserted into the pin holes b, b.

Although illustration is omitted, when the ladder 5 is attached along the left edge c of the opening edge of the hatch 3, the hatch 3
Two brackets 24, 2 facing each other on the left end of the inside
The upper end side of the ladder 5 is inserted at a position (see FIG. 8) along the pin holes b, b facing each other between the four brackets 4, and the locking pins 11, 11 protruding from both side surfaces of the ladder 5 are attached to both brackets 24, 2.
It is made to rush into the pin holes b and b of 4 and 9.

FIG. 12 shows a ladder 5 whose width direction is parallel to the longitudinal direction of the scaffolding plate 1, like a ladder 5 connecting the upper scaffolding plate 1 and the middle scaffolding plate 1 of the temporary scaffold shown in FIG. In the case where the hatch 3 is attached along the rear side edge b of the opening edge of the hatch 3 in this direction, in this case, the hatch 3 is at both left and right ends along the rear side edge b of the opening edge of the hatch 3. Insert the upper end side of the ladder 5 into a position (see FIG. 8) along the opposing pin holes a, a between the two brackets 24, 25,
The locking pins 11, 11 protruding from both side surfaces of the ladder 5 may be inserted into the pin holes a, a of the brackets 24, 25.

Although not shown in the drawing, when the hatch 3 is attached along the front edge a of the opening peripheral edge, the two brackets 2 at the left and right ends thereof along the front edge a.
The upper end side of the ladder 5 is inserted at a position (see FIG. 8) along the opposing pin holes a, a between the brackets 4, 25, and the locking pins 11, 11 protruding from both side surfaces of the ladder 5 are attached to both brackets 24. ，
25 pin holes a, a.

As in the mounting example shown in FIG. 12, the ladder 5 can be mounted at a position along the front edge a or the rear edge b of the opening edge of the hatch 3, and the ladder 5
Can be installed so that its width direction is parallel to the longitudinal direction of the scaffolding plate 1, so the width is narrow (scaffolding width is about 500 mm).
Even in a site where only scaffolds can be assembled, it is possible to pass on the scaffolding board 1 on the lower side where the ladder 5 is installed. Incidentally, FIG.
FIG. 4 is a vertical cross-sectional view of a temporary scaffold when the ladder 5 is attached to the hatch 3 at a position along the front edge portion a or the rear edge portion b. Also from this figure, it can be seen that it is possible to drive on the scaffolding plate 1 on the lower stage side where the ladder 5 is installed.

FIG. 13 shows a case where the ladder 5 is stored. That is, as shown in FIG. 8, the pin hole b provided on the facing surface of the brackets 24, 24 facing the front and rear on the left end side in the hatch 3, and the bracket 25 facing the front and rear on the right end side in the hatch 3. , 25 pin holes b provided on opposite surfaces
The arrangement pitch P between and is such that the upper-stage side locking pin 11 for mounting the ladder
And the arrangement pitch Q between the lower locking pin 12 (see FIG. 9)
Since it is set to be almost equal to
The upper end side of the ladder 5 is inserted at a position (see FIG. 8) along the facing pin holes b, b between the two brackets 25, 25 facing each other in the front and rear on the right end side in the hatch 3. The upper ends of the ladders 5 are pivotally attached to the brackets 25, 25 by causing the locking pins 11, 11 protruding from both side surfaces of the brackets 5 to project into the pin holes b, b of the brackets 25, 25.

After that, as shown in FIG. 15 (A), the ladder 5 is swung upward around the locking pins 11 and 11 and brought into contact with the back side of the scaffold plate 1. In this state, the locking pins 12, 12 on the lower side of the ladder 5 are projected into the pin holes b, b between the two brackets 24, 24 facing each other on the left end side in the hatch 3 in the front-rear direction. . As a result, the ladder 5 is stored in the back side of the scaffolding plate 1, and this storage state is shown in FIG. still,
An end lateral frame 22 (see FIG. 7) of the scaffolding plate body 2 is arranged at a position along the right edge D on the opening edge of the hatch 3, but at a position along the left edge C. , The end lateral frame 22
Since such a horizontal frame is not provided, the ladder 5 can be accommodated in the state of being overlapped with the back surface of the scaffolding plate 1.

Since the ladder 5 can be easily stored on the back side of the scaffolding plate 1 as described above, storing the ladder 5 makes it convenient to carry the scaffolding plate 1 and the ladder 5. Further, when the ladder 5 is not used, it is possible to pass on the scaffold plate 1 on the lower side of the scaffold plate 1 in which the ladder 5 is stored.

As described above, in the temporary scaffold according to the present invention, the four ladder mounting brackets 24, 24, 25, 25 provided at the four corners of the hatch 3 face each other in the hatch 3 left and right. The distance A between the facing surfaces of the brackets 24, 25 and the distance B between the facing surfaces of the brackets 24, 24 and 25, 25 facing each other in the front-rear direction are substantially equal to each other, and the distances A, B are substantially equal to the lateral width W of the ladder 5. The brackets 24, 25 and 25 are set to be equal to each other, and the brackets 24, 25 facing left and right and the brackets 24, 24 and 25 facing front and back,
Since the pin holes “a” and “b” into which the locking pins 11 and 12 for attaching the ladders projecting from the both side surfaces of the ladder 5 can be respectively inserted in the respective facing surfaces of the ladder 25, the hatch 5 is connected to the ladder 5. When attaching, the hatch can be attached to any of the front and rear side edges a and b and the left and right side edge c and d. Therefore, even on a temporary scaffold with a narrow scaffolding width of about 500 mm, it is possible to pass on the lower scaffolding plate on which the ladder is installed.

Further, a pin hole b provided on the facing surfaces of the brackets 24, 24 facing the front and rear on the left end side in the hatch 3.
And the bracket 2 facing front and back on the right end side in the hatch 3.
The arrangement pitch P with respect to the pin holes b provided on the opposing surfaces of 5, 5 is such that the upper-stage locking pin 11 and the lower-stage locking pin 12 of the ladder are arranged.
Since they are set to be substantially equal to the arrangement pitch Q between the two brackets 25 facing each other on the right end side in the hatch 3, a position along the pin holes b, b (FIG. 8). The upper end side of the ladder 5 is inserted into the hatch 3 and the two brackets 24 facing the front and rear on the left end side in the hatch 3,
By inserting the lower-stage side locking pins 12, 12 into the pin holes b, b facing each other between the 24, the ladder 5 can be easily housed on the back side of the scaffolding plate 1, and the scaffolding plate 1
It is also convenient for transporting and storing the ladder 5.

In the above embodiment, the four ladder mounting brackets 24, 24, 25, 25 are arranged at both ends of the front and rear side edge portions a and b in the hatch 3, respectively. The edges C and D may be arranged at both ends, respectively, and may be arranged at four corners.

[0033]

According to the invention of claim 1, when the ladder is attached to the hatch, the ladder can be attached to any position of the front and rear side edges and the left and right side edges of the hatch. The ladder can be installed in any direction depending on the situation. In particular, even on a temporary scaffolding where only narrow scaffolds can be assembled, it is possible to pass on the scaffolding board on the lower tier where the ladder is installed.

According to the second aspect of the present invention, the ladder can be stored on the back side of the scaffold plate, which is convenient for transporting and storing the scaffold plate and the ladder.

[Brief description of drawings]

FIG. 1 is a perspective view showing a temporary scaffold in which scaffold plates are vertically provided in a plurality of layers.

FIG. 2 is a perspective view of the scaffolding board showing a state where the work floor is in the closed position.

FIG. 3 is a perspective view of the scaffolding plate with the work floor in an open position.

FIG. 4 is an enlarged plan view of a work floor portion of the scaffold plate.

FIG. 5 is an enlarged bottom view of a work floor portion of the scaffold plate.

6 is a partially enlarged view of FIG.

FIG. 7A is an explanatory cross-sectional view showing a step before the projecting end of the pivot rod having the engaging slant end face is projected into the rod support hole; and FIG. 7B is the projecting end of the pivot rod. FIG. 7 is an explanatory cross-sectional view showing a state in which a rod supporting hole is projected by an engaging oblique end surface.

FIG. 8 is an explanatory perspective view showing an arrangement state of four ladder mounting brackets arranged in the hatch.

FIG. 9 is a front view of the ladder.

10 (A) is a partially enlarged front view of the ladder shown in FIG. 9, (B) is a left side view thereof, and (C) is a plan view thereof.

FIG. 11 is an explanatory perspective view showing a mounting state of the ladder to the bracket.

FIG. 12 is an explanatory perspective view showing how the ladder is attached to the bracket.

FIG. 13 is an explanatory perspective view showing how the ladder is attached to the bracket when the ladder is stored.

FIG. 14 is a vertical cross-sectional view of the temporary scaffold when the ladder is attached at a position along the front edge or the rear edge in the hatch.

15A is a side view showing a method of storing a ladder on the back side of the scaffolding plate, and FIG. 15B is a bottom view of the scaffolding plate with the ladder stored.

[Explanation of symbols]

1 scaffolding board 2 Scaffolding board body 3 hatches 4 work floor 5 ladders 11,12 Locking pin for mounting ladder 24,25 ladder mounting bracket a, b pin hole

Claims (2)

[Claims] 1. A scaffolding board is vertically provided in a hierarchical manner, the scaffolding boards are connected to each other by a ladder, and each scaffolding board is provided with a hatch serving as an entrance and exit from the ladder, and a work floor for opening and closing the hatch is provided. In the erected scaffold, ladder mounting brackets are arranged at approximately four corners of the hatch, and these four brackets have a distance between the facing surfaces of the brackets facing each other in the left-right direction along the longitudinal direction of the scaffold plate. , The distance between the facing surfaces of the front and rear facing brackets is set to be substantially equal and the distance is set to be substantially the same as the lateral width of the ladder. Is a erection scaffolding in which pin holes into which locking pins for ladder attachment, which respectively project from both side surfaces of a ladder that is inserted and erected between the facing surfaces, can be inserted, are provided. 2. An arrangement pitch between a pin hole provided on a facing surface of a bracket facing front and back on one of the left and right sides and a pin hole provided on a facing surface of a bracket facing front and back on the other side. Is set to be approximately equal to the arrangement pitch of the upper-stage locking pin for mounting the ladder provided on the upper end of the ladder and the lower-stage locking pin provided below the upper-stage locking pin. The erected scaffold according to claim 1.