JP4447387B2 - Work scaffolding and linking scaffolding using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a scaffold platform for work which does not disturb work when a scaffold is folded and is used, can be easily set even if an obstacle such as a wall or a thing is present around it and allow a worker to ascend and descend easily and is provided with a handrail rod enabling installation of a false-step prevention guard, and provide a connected scaffold platform used for the same. <P>SOLUTION: The scaffold platform 10 for work comprises ladder-like supporting legs 12 and 13 paired at both sides of a top plate 11 and capable of being folded, and is provided with the handrail rods 22-25 capable of being moved up and down along leg posts 14-17 of the support legs 12 and 13, retaining their tip ends below the tip ends of the leg posts 14-17 when it is folded and projecting their tip ends above the top plate 11 when it is used and a lock means 26 to be engaged with the handrail rods 22-25 projected above the top plate 11 and retaining the handrail rods 22-25 in the projected state. <P>COPYRIGHT: (C)2006,JPO&amp;NCIPI

Description

The present invention relates to a work platform and a connection scaffold using the work platform, and more specifically, when working in a relatively high place such as interior finishing of a ceiling, wiring in a ceiling, piping, etc. at a construction site of a building, etc. In particular, the present invention relates to a scaffolding base having a clue bar used to easily move up and down.

Conventionally, as shown in FIG. 46, a pair of scaffolding plates 501 having a working floor surface 500 on the upper surface, and upper ends connected to the left and right ends of the scaffolding plates 501 and lower ends placed on the floor surface 502. Support legs 503, 504, and at least one of the support legs 503 has a ladder structure. Elevation guide cues 507 and 507a are provided so as to be rotatable between a use position extending on the extension line 506 and a storage position arranged in a superposed state on the side surfaces of the columns 505 and 506. As for 507 and 507a, a work platform 208 that is fixedly held at a use position at a position separated from the pivot has been proposed (see, for example, Patent Document 1).
In addition, as shown in FIG. 47, ladder-like main legs 510 and 511 that are made of aluminum members are foldably provided on a top plate 509 made of an aluminum member so that the corners of the top plate 509 can be folded. There has been proposed an aluminum portable worktable 513 in which the handle members 512 and 512a are foldably attached from the standing position along the main legs 510 and 511 (see, for example, Patent Document 2).
Furthermore, as shown in FIG. 48, ladder-shaped main legs 515 and 516 that are paired with a rectangular top plate 514 are provided so as to be foldable, and on the one side in the width direction of the top plate 514 or the main legs 515 and 516 There has been proposed a working platform 520 in which handle members 517 and 517a are foldably attached and a handrail 519 detachable on the long side and / or short side of the rectangular top plate 514 is provided (for example, And Patent Document 3).

Japanese Patent No. 3429655 Japanese Patent Laid-Open No. 11-100805 JP 2001-152659 A

However, in the invention described in Patent Document 1, the lifting guide cues 507 and 507a are used in positions extending on the extension lines of the columns 505 and 506, and retracted positions provided side by side on the columns 505 and 506. Since there is an obstacle such as a wall or an object on the side surface of the scaffolding plate 501 or the support leg 503 when the lifting guide clues 507 and 507a are rotated and set. As a result, there is a problem that the lifting guide cues 507 and 507a cannot be rotated and the lifting guide cues 507 and 507a cannot be set.
In the invention described in Patent Document 2, the brackets for standing the handle members 512 and 512a are attached to the corners of the top plate 509 toward the outer surface of the top plate 509. There is a problem that a person's clothes are caught by a receiver, or an object is caused to collide with a metal fitting during transportation or use. Further, if there is a wall or an object on the ascending / descending surface side of the main legs 510 and 511, there arises a problem that the handle members 512 and 512a cannot be set.
In the invention described in Patent Document 3, since the removable handrail 519 is provided on the long side and / or the short side of the top plate 514, the operator can lean on the handrail 519 during the work. It has a problem that it is highly prone and loses the balance of the body and falls over the scaffolding. Furthermore, since the dedicated handrail 519 is provided, there is a problem that the cost of the work platform 520 increases.

The present invention has been made in view of such circumstances, and does not become an obstacle to the operation during storage and use, and can be easily set even when obstacles such as walls and objects exist around it and can be moved up and down. It is an object of the present invention to provide a work platform having a clue bar that can be easily performed and to which an anti-step-off guard can be attached, and a connecting platform using the same.

The work platform according to claim 1, which meets the above-mentioned purpose, is disposed at both left and right ends in the longitudinal direction of the top plate via a folding coupling mechanism, and a pair of ladders that are opened downward by increasing the width thereof . In a work scaffolding base that is foldable so that the support legs can be folded,
A clue bar that moves up and down along each pedestal of the support leg, and that is held at a lower position than the tip of the pedestal when stored, and a tip that protrudes above the top plate when used.
Engages in each clue rod projecting upward of the top plate, possess a locking means for holding the state of protruding the該手takes rod,
The upper end of each clasp bar is provided with a mounting portion having a hole through which one side of the stepping prevention guard is inserted, and both ends of the stepping prevention guard are protruded outwardly by an elastic member. A latching member is provided which has a pin and protrudes the protruding pin on both sides of each mounting portion to prevent the step-off prevention guard from falling off the mounting portion .

The working scaffold according to claim 2 is the working scaffold according to claim 1, wherein the lock means is engaged with the clasp bar at a plurality of positions in the vertical direction of the clasp bar and protrudes from the top plate. There are a plurality of protruding positions of the clue bar.

The working scaffold according to claim 3 is the working scaffold according to claim 1 and 2, wherein a guide is provided outside the pedestal, and the clue bar moves up and down along each guide.

The working scaffold of claim 4 is the working scaffold of claim 3, wherein the clasp bar has a rectangular cross section, and the guide has a square groove part through which the clasp bar is inserted.

The working scaffold according to claim 5 is the working scaffold according to claim 4, wherein the locking means includes a rod that can be fitted into a hooking hole provided at a predetermined position of the clue bar. An operating portion for advancing and retreating is attached to the guide.

A connection scaffold according to claim 6 is a connection scaffold in which the work scaffolds according to claims 1 to 5 are connected in series, and the top plates of the adjacent work scaffolds are connected to both sides. Connected by a connecting scaffold member provided with a member, both ends thereof are inserted into a connecting tool provided at an end portion of the anti-step-off guard provided on each of the adjacent work scaffolding stands facing each other. It is connected by an auxiliary step-off prevention guard.

Connecting scaffold platform according to claim 7, wherein, in connecting the scaffold platform according to claim 6, wherein the slips prevention guard and the auxiliary slips prevention guard is mounted on one side or both sides (the support legs of each said top plate and said connecting scaffold plate One or both of the non-directional sides).

In the work platform according to any one of claims 1 to 5 , since the clue bar can be held in a state of projecting up and down along the pedestal of the support leg, the periphery of the work platform (on both sides of the top plate) Even if an obstacle such as a wall or an object is present on the elevating surface side of the support leg), the clue bar can be operated and set reliably with a small work area.
In addition, the upper end of the clasp bar has a mounting part that attaches one side of the safety guard, so even if you concentrate on the work on the top plate, the body will come into contact with the safety guard. The end of the plate can be sensed, and it becomes possible to prevent the foot from falling off. Here, when the height of the clue bar protruding from the top plate is set in the range of 80 to 120 mm, for example, the work activity range of the operator can be expanded, and the foot can contact the anti-stepping-off guard and The end of the plate can be sensed, and it becomes possible to prevent the foot from falling off. Further, by using the attachment portion, for example, it becomes possible to pull out the clue bar from the top of the top plate.
And since the latching member which latches a stepping prevention guard in the attachment part is provided in the both ends of the stepping prevention guard, it can prevent that a stepping prevention guard remove | deviates from an attachment part.
In addition, a projecting pin that is urged outward by an elastic member is provided at a predetermined position of the stepping prevention guard, and it protrudes on both sides of the mounting part to temporarily fix the stepping prevention guard to the mounting part. Can be easily mounted and fixed to the mounting portion.

In particular, in the work platform according to claim 2, the cue bar has a plurality of protruding positions of the cue bar that the locking means engages at a plurality of vertical positions of the cue bar and protrudes from the top plate. Even if an obstacle exists above the plate, the protrusion length of the clue bar can be adjusted according to the height to the obstacle.

In the working scaffold according to claim 3, since the guide is provided on the outside of the pedestal and the clue bar moves up and down along the guide, the direction in which the clue bar moves up and down can be regulated by the guide. For this reason, the clue bar can be moved up and down along the pedestal of the support leg, so that it does not get in the way when the operator raises or lowers the support leg.

In the work platform according to claim 4, since the clue bar has a rectangular cross section, and the guide has a square groove portion through which the clue bar is inserted, the clue bar does not rotate in the guide. The locking means can be easily engaged with the clue bar.

In the work platform according to claim 5, since the lock means has a rod that can be fitted into a hook hole provided at a predetermined position of the clasp bar, the clasp bar can be easily latched by the lock means. It becomes possible to do. In addition, since the operating portion for moving the rod back and forth is attached to the guide, it is possible to easily lock at a predetermined position while sliding the clue bar in the guide.

In the connection scaffolding according to claims 6 and 7 , adjacent top plates are connected by a connection scaffold member, and the upper opposing anti-step-off prevention guards are connected by an auxiliary anti-step-off prevention guard via a connector, It becomes possible to prevent stepping off at the connecting portion.
Moreover, if the height of the clue stick protruding from the top surface of the top plate is set in the range of 80 to 120 mm, for example, the installation height of the auxiliary step-off prevention guard can be set in the range of 80 to 120 mm in the connecting portion. It is possible to expand the work activity range of the worker at the section, and it is possible to detect the end of the coupled scaffolding member by contacting the shoe with the auxiliary stepping-off prevention guard, thereby preventing the stepping-off and falling. It becomes possible.

In particular, in the connection scaffolding according to claim 7 , since the step-off prevention guard and the auxiliary step-off prevention guard are provided on one side or both sides of the top plate and the connection scaffolding member, the stepping-off prevention guard and the auxiliary stepping-off prevention guard are removed depending on the construction state of the connection scaffolding. The prevention guard and the auxiliary stepping prevention guard can be installed, and both work efficiency and safety can be achieved.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
Here, FIG. 1 is a side view of the working platform according to the first embodiment of the present invention, FIG. 2 is a partially omitted front view of the working platform, and FIGS. 3A and 3B are FIG. 4 is a front view of the locking means, FIG. 5 is a sectional view taken along the line PP in FIG. 4, and FIGS. 6A, 6B, and 6C are respectively locked. FIG. 7 is a cutaway cross-sectional view of the locking means in the unlocked state, and FIG. 8A is a partially cutaway side cross-sectional view of the stepping prevention guard. FIG. 8B is a cross-sectional view taken along the line Q-Q in FIG. 8A, FIG. 9 is a partially omitted front view showing a state when the clue bar is stored, and FIG. 11 is a partially omitted front view showing a state, FIG. 11 is a partially omitted front view showing a state in which the clue bar has been further pulled out, and FIG. FIG. 13 is a partially abbreviated front view showing a state in which the weighing rod is placed on the bottom surface of the guide and is the longest, and FIG. 14 is a partially omitted front view showing a state in which the fully pulled-out clue bar is locked, FIG. 15 is a side view showing the work platform with the clue bar locked, and FIG. FIG. 17 is a side view of the connection scaffolding according to the first embodiment of the present invention, and FIG. 18A is the second embodiment of the present invention. FIG. 18B is a cross-sectional view taken along the line XX of FIG. 18A, FIG. 19 is a side view of a connecting bracket used for the work scaffold, and FIG. FIG. 21 is a plan view of a connecting bracket used for the same scaffolding platform as viewed from the Z direction in FIG. 19, and FIG. FIG. 22 is an explanatory diagram showing a state when the support leg is folded in the scaffolding base, FIG. 22 is an explanatory diagram showing a state when the support leg is opened in the working scaffold base, and FIG. FIG. 24 is a side view of the connection scaffolding according to the second embodiment of the present invention, and FIGS. 25A and 25B are respectively the same connection scaffolding. The side view and plan view showing the extended state of the auxiliary step-off prevention guard used, and FIGS. 26 (A) and (B) are side views showing the contracted state of the auxiliary step-off prevention guard used for the connecting scaffold. FIG. 27A is a side view of the mounting bracket used for the connecting scaffold, FIG. 27B is a cross-sectional view taken along the line Y-Y in FIG. 27A, and FIG. A plan view of the mounting bracket used for the connected scaffolding platform as seen from the direction, FIG. 29 is a partially omitted front view showing a state in which the clue bar of the working scaffold base according to the third embodiment of the present invention is housed, and FIG. 30 shows the clue stick of the working scaffold base completely pulled out. FIG. 31 is a partially omitted front view showing a state when the clue bar of the work platform according to the fourth embodiment of the present invention is housed. FIG. FIG. 33 is a partially omitted front view showing the state when the clue bar of the working scaffold is completely pulled out, and FIG. 33 houses the clue bar of the working scaffold according to the fifth embodiment of the present invention. 34 is a partially omitted front view showing the state, FIG. 34 is a partially omitted front view showing the state when the clue bar of the working scaffold is completely pulled out, and FIG. 35 shows the sixth embodiment of the present invention. The side view of the working scaffold, FIG. 36 (A) is the longest clue bar of the working scaffold. (B) is a cross-sectional view taken along the line NN in FIG. 36 (A), FIG. 37 (A) is a side view of the middle beam member of the working scaffold, and FIG. 37A is a cross-sectional view taken along the line RR in FIG. 37A, FIG. 38A is a side view showing a mounting state of the middle beam member of the working scaffold, and FIG. -M sectional view, FIG. 39 (A) is a side view of a base plate member of the working scaffold, (B) is a sectional view taken along the line ZZ in FIG. 39 (A), and FIG. 40 is the working scaffold. FIG. 41 is an explanatory view showing a state when the clasp bar of the working scaffold is completely pulled out, and FIG. 42 is a seventh embodiment of the present invention. FIG. 43 is a partially omitted side view showing a state when starting to pull out the clue bar of the work platform according to the embodiment, and FIG. 43 shows a state when the clue bar of the work platform is completely pulled out. 44 is a partially omitted side view, FIG. 44 is a partially omitted front view when an auxiliary guard is attached to a safety guard provided on the scaffolding base for the work, and FIG. 45 is provided on a clue stick on the working scaffold. It is a partially omitted side view when an auxiliary guard is attached to the treadle-off prevention guard.

As shown in FIG. 1 and FIG. 2, the work platform 10 according to the first embodiment of the present invention includes a top plate 11 and both left and right sides of the top plate 11 (in this embodiment, the top A pair of ladder-like support legs 12 and 13 which are foldably provided on both ends in the longitudinal direction of the plate 11 and provided on the outer sides of the leg pillars 14 to 17 disposed in front of and behind each of the support legs 12 and 13, respectively. The hooks 22 to 25 that move up and down (up and down) along the guides 18 to 21 and the clue bars 22 to 25 that protrude above the top plate 11 are engaged, and the clue bars 22 to 25 are held in a protruding state. Locking means 26, and upper and lower guard guards 27 and 28 attached to the upper ends of the clue bar 22 and the clue bar 24 and to the upper ends of the clue bar 23 and the clue bar 25, respectively. Hereinafter, these will be described in detail.

The top plate 11 is formed, for example, by attaching a scaffold plate 30 to a rectangular frame 29, and has a strength that can withstand even a plurality of workers. Moreover, the connection latching member 89 provided in the both ends of the top plate 11 on both sides of the connection scaffold member 87 (refer FIG. 17) which connects the top plates 11 of the adjacent work scaffold bases 10 is latched. A plurality of engaging holes 11a are provided.
A pair of ladder-like support legs 12 (13) provided on both sides of the top plate 11 so as to be foldable are paired leg pillars 14 (16), 15 (17) and leg pillars 14 (16), 15 (17) There are a plurality of step bars 31 that are horizontally mounted with an interval in the vertical direction. Each support leg 12 (13) is disposed on both sides of the top plate 11 via folding connection mechanisms 32 and 33.
Here, the folding connection mechanism 32 (33) is fixed to the fixed plate 34 (35) fixed to both ends of the frame 29 and the movable plate 36 (37) fixed to the upper end of the support leg 12 (13). ) Are rotatably connected by a pivot 38 (39).

As shown in FIG. 2, the upper ends of the pair of pedestals 14 (16) and 15 (17) constituting the support leg 12 (13) have the same interval as the width of the top plate 11. It extends upward in parallel. On the other hand, the portions of the pedestals 14 (16) and 15 (17) excluding the upper end are inclined symmetrically in the width direction between the pedestals 14 (16) and 15 (17), and as they go downward, Gradually, the width between the two has been expanded. Thereby, the top plate 11 can be supported on the floor surface in a stable state by the support legs 12 and 13.
Further, an opening that can be folded in accordance with the operation of the folding coupling mechanisms 32 and 33 is provided between the lower surface side of the both ends of the top plate 11 and the step bar 31 that is horizontally mounted on the upper portion of the support leg 12 (13). The fasteners 40 are laid side by side. Thereby, the spread of the opening leg angle of the support legs 12 and 13 at both ends of the top plate 11 can be prevented, and the top plate 11 can be supported on the floor surface in a stable state.

As shown in FIGS. 3A and 3B, the clue bars 22 to 25 are rectangular in cross section, and an upper end side stopper 41 is fitted on the upper end side thereof and fixed by a set screw 42. Yes. Further, a lower end side stopper 43 is fitted on the lower end side of the clue bars 22 to 25 and is fixed by a set screw 44. A stopper 45 that protrudes from the surface of the clue bar 22-25 is provided on the lower side of the clue bar 22-25 on the outer side when moving up and down along the pillars 14-17 via the clue bar 22-25. The lower end side stopper 43 is fixed by a set screw 46.

Furthermore, in the side part of the clasp bar 22-25 which becomes a front when raising / lowering along the pillars 14-17, the 1st engaging hole 47 is provided in the center part of the lower position from the side stopper 41 for upper ends, A second hooking hole 48 is located below the first hooking hole 47 from the central part to one side, and a third pin is located above the lower end side stopper 43 and from the central part to the one side. Engagement holes 49 are respectively formed.
With such a configuration, the tip portions of the clue bars 22 to 25 can be held at positions below the tip portions of the leg posts 14 to 17 and can be latched by the first engagement holes 47. Further, the clue bars 22 to 25 are protruded above the top plate 11 and are latched by the second engagement holes 48 or the third engagement holes 49, thereby holding the clue bars 22 to 25 at different projecting positions. be able to.

At the upper ends of the clasp bars 22 to 25, there are provided mounting portions 50 for mounting one side of the stepping prevention guards 27 and 28. Here, the attachment portion 50 is formed with a portal-like base portion 52 that is rotatably attached to the upper end portions of the clue bars 22 to 25 via a rivet 51, and a hole 53 that is connected to the base portion 52 and formed in the center portion. And a mounting portion 54.
With such a configuration, by allowing the step-off prevention guards 27, 28 to be inserted into the holes 53, one side of the step-off prevention guards 27, 28 can be attached to the mounting portion 50.
The second and third hooking holes 48 and 49 of the clasp bars 22 and 23 that move up and down along the leg columns 14 and 15 of the support leg 12 on one end side in the longitudinal direction of the top plate 11 are center lines. They are provided at positions that are symmetrically deviated with respect to (the position of the first engaging hole 47). The same applies to the cue bars 24 and 25 that move up and down along the pillars 16 and 17 of the support leg 13 on the other end in the longitudinal direction of the top plate 11, respectively.

As shown in FIGS. 4 and 5, the guide 19 (20) provided on the pedestal 15 (16) includes a U-shaped square groove portion 55 through which the clue bar 23 (24) is inserted, and an opening of the square groove portion 55. It has an adhering portion 57 that is connected to the side and includes a part of the upper side of the pedestal 15 (16) and is fixed to the pedestal 15 (16) via a rivet 56. Further, a bolt 58 is penetrated at a location near the opening of the square groove portion 55, and a nut 59 is screwed to the tip side to be fixed to the square groove portion 55. Reference numeral 59a denotes a rivet for attaching the movable plate 36 (37) to the pedestal 15 (16).
Further, since the guide 18 (21) is fixed to the pedestal 14 (17), the structure is the same as that of the guide 19 (20) except that the guide 18 (21) has a structure symmetrical with the guide 19 (20). Therefore, detailed description is omitted.

With such a configuration, the clue bar 23 (24) can be inserted while being in contact with the inner side surfaces 60, 61 of the square groove portion 55. Thereby, the sliding direction of the clue bar 23 (24) can be regulated by the inner side surfaces 60, 61 of the guide 19 (20). Since the distance W between the side portion of the bolt 58 and the bottom surface 62 of the square groove portion 55 is larger than the width V of the inserted clue rod 23 (24), the clue rod 23 (24) is connected to the inner side surfaces 60, 61. The inner side surfaces 60 and 61 can be rotated while being slid along.

As shown in FIGS. 6A to 6C, the lock means 26 has a through-hole 63 formed in the center, and a projecting portion 64 that has an oval shape in plan view, and a collar portion 65 around it. The formed lock main body 66, the dome portion 67 having an oval shape in plan view that can be internally provided with the protruding portion 64, and a connecting pin 68 that is attached to the center of the dome portion 67 and can be inserted into the through hole 63. It has the operation part 69 provided with. Then, the operation portion 69 and the lock body 66 are configured such that the connecting pin 68 is inserted into the through hole 63 of the protruding portion 64, the spring 70 is externally attached to the connecting pin 68 protruding inside the protruding portion 64, and the latch 71 is attached. Are integrated.
The locking means 26 is fixed to the outer side of the rectangular groove portion 55 of the guides 18 to 21 by inserting a rivet 73 through an insertion hole 72 formed in the collar portion 65. An insertion hole 74 is formed in a portion of the rectangular groove portion 55 to which the locking means 26 is fixed and facing the connecting pin 68.

With such a configuration, when the dome portion 67 is pushed in by the pressing force of the spring 70 so that the protruding portion 64 is inserted inside the dome portion 67, the connecting pin 68 is positioned inside the protruding portion 64. For example, the hook rod 23 (24) is inserted into the hook rod 23 (24) through the insertion hole 74 formed in the square groove portion 55 and is engaged with the third hook hole 49 to be hooked. The movement of 24) can be locked.

Further, as shown in FIG. 7, the connecting pin 68 can be withdrawn from the third hooking hole 49 by pulling up the dome part 67 of the operating part 69, and the lock of the clue bar 23 (24) can be released. it can. In addition, by rotating the operation portion 69 on the upper surface side of the protrusion portion 64, for example, by 90 °, the protrusion portion 64 cannot be inserted inside the dome portion 67, and the movement of the connecting pin 68 can be stopped. .
Here, since the spring 70 is compressed between the inner surface of the projecting portion 64 and the latch metal 71 in a state where the operation part 69 is pulled up, the operation unit 69 is interposed via the latch metal 71. It is in a state of being biased toward the protruding portion 64 side. For this reason, by rotating the operation portion 69 on the upper surface side of the protrusion 64 by, for example, 90 °, the dome 67 moves downward, and the protrusion 64 is easily inserted inside the dome 67.

As shown in FIGS. 8A and 8B, the step-off prevention guards 27 and 28 are tubular guard bodies 75 having an outer diameter that can be inserted into holes 53 formed in the mounting portion 54 of the mounting portion 50, and Side guards 76 are attached to both ends of the guard body 75. A plurality of ridges 77 are formed on the outer peripheral side of the guard body 75 in the axial direction. Further, a projecting pin 78, which is an example of a latching member, is provided at a position facing one another of the stepping prevention guards 27, 28 with the mounting portion 54 therebetween when the one side of the guards 27, 28 is mounted on the mounting portion 50.
Here, the projecting pin 78 has a cylindrical tip portion 79 having a hemispherical portion formed at the tip thereof and a base portion 80 having a diameter larger than that of the tip portion 79, and a fitting hole 81 is formed on the terminal end side of the base portion 80. ing. The protruding pin 78 is disposed in the pin fixing member 84 in which a through hole 83 is formed which is disposed in the guard main body 75 and through which the base 80 can be inserted in a state where a spring 82 which is an example of an elastic member is inserted into the insertion hole 81. It is charged. In the guard main body 75 in which the pin fixing member 84 is disposed, a hole 85 through which the tip 79 of the protruding pin 78 can be inserted is formed at a position corresponding to the through hole 83.

With this configuration, only the tip 79 of the projecting pin 78 urged outward by the spring 82 can be projected from the hole 85 of the guard body 75. Then, by pushing the projecting pin 78 inward, the projecting pin 78 can be prevented from projecting from the guard body 75, and the guard body 75 can be easily inserted into the hole 53 of the mounting portion 54. After that, the projecting pin 78 can be automatically projected, and the step-off prevention guards 27 and 28 can be prevented from falling off the mounting portion 50.

Next, a method for using the working scaffold 10 according to the first embodiment of the present invention will be described.
First, as shown in FIGS. 6 and 9, the folded support leg 12 (13) is unfolded to allow the work platform 10 to stand on its own. At this time, the clue bar 23 (25) has its tip held at a lower position than the tip of the pedestal 15 (17) (stored state). Further, the protruding portion 64 of the lock body 66 provided in the locking means 26 is inserted inside the dome portion 67 of the operation portion 69, and the connecting pin 68 provided in the operation portion 69 is formed in the square groove portion 55. It is inserted into the first engaging hole 47 formed in the clasp bar 23 (25) through the insertion hole 74, and the clasp bar 23 (25) is locked to the guide 19 (21).

Next, by pulling up the dome portion 67 of the operation portion 69 of the lock means 26, the connecting pin 68 can be withdrawn from the first engagement hole 47, and the lock of the clasp bar 23 (25) is released. Then, by holding the operating portion 69 in the raised state, the clue bar 23 (25) can be inserted through the guide 19 (21), and the clasp bar 23 (25) is inserted into the corner as shown in FIG. The cue stick 23 (25) is projected above the top plate 11 by sliding while making contact with the inner side surfaces 60 and 61 and the bottom surface 62 of the groove portion 55.
Here, since the sliding direction of the clue bar 23 (25) is regulated by the inner side surfaces 60 and 61 and the bottom surface 62 of the square groove portion 55, the clue bar 23 (25) moves along the pedestal 15 (17). .
The dome portion 67 of the operation portion 69 is pulled up and the operation portion 69 is rotated 90 degrees on the upper surface side of the protrusion portion 64, for example, so that the protrusion portion 64 cannot be inserted inside the dome portion 67. The rod 23 (25) may be inserted through the guide 19 (21).

Here, as the clue bar 23 (25) is slid in the guide 19 (21), the distance S between the upper end of the pedestal 15 (17) and the side surface of the clue bar 23 (25) gradually decreases. come. Therefore, as shown in FIG. 11, the clue bar 23 (25) is inclined along the inner side surfaces 60, 61 in the guide 19 (21), and the upper end of the pedestal 15 (17) and the clue bar 23. The distance S with the side surface of (25) is increased. Accordingly, interference between the upper end portion of the pedestal 15 (17) and the side surface of the clue bar 23 (25) can be prevented, and the clue bar 23 (25) can further protrude above the top plate 11.
Then, as shown in FIG. 12, when the stopper 45 attached to the lower end of the clue bar 23 (25) hits the lower end of the square groove portion 55 of the guide 19 (21), the clue bar 23 (25) is completely pulled out. It is detected that the state has been changed.

As shown in FIG. 13, after the clue bar 23 (25) is completely pulled out, the clue bar 23 (25) is moved along the inner side surfaces 60 and 61 in the guide 19 (21). The rod 23 (25) is inclined until the side surface comes into contact with the side of the bolt 58. Accordingly, as shown in FIG. 14, the stopper 45 that has been in contact with the lower end of the square groove portion 55 of the guide 19 (21) can be stored in the square groove portion 55, and the clue bar 23 (25) is inserted into the guide 19 ( 21), the stopper 45 can be further pulled up until the outer surface of the stopper 45 abuts against the inner surface of the square groove portion 55.
Note that the clue bar 23 (25) can stand upright with respect to the width direction of the top plate 11 by inclining until the side surface of the clue bar 23 (25) contacts the side of the bolt 58. This makes it easy for the operator to move up and down.

When the clasp bar 23 (25) is pulled up to this state, the center of the insertion hole 74 formed in the square groove portion 55 and the third engagement hole 49 formed in the clasp bar 23 (25) can be matched. it can. For this reason, when stopping pulling up the operation part 69, the dome part 67 of the operation part 69 moves downward, and the protruding part 64 of the lock body 66 is inserted inside the dome part 67. The provided connecting pin 68 is fitted into the third engaging hole 49 in which the clasp bar 23 (25) is formed through the insertion hole 74 formed in the square groove portion 55. As a result, the clue bar 23 (25) can be locked to the guide 19 (21), and the clue bar 23 (25) can be held in a fully pulled out state.
Further, by performing the same operation on the clue bar 22 (24), as shown in FIGS. 15 and 16, all the clue bars 22 to 25 can be held in a fully drawn state.

Subsequently, the guard body 75 was provided on the upper ends of the clasp bars 22 (23) and 24 (25) while the protruding pins 78 provided on the stepping prevention guard 27 (28) were sequentially pushed into the guard body 75 from one side. By inserting and inserting through the holes 53 of the mounting portion 54, both sides of the stepping prevention guard 27 (28) can be inserted into the holes 53 of the mounting portions 50. Here, since the projecting pin 78 is urged by the spring 82 so as to project outward from the inside of the guard body 75, the projecting pin 78 automatically enters the projecting state when passing through the hole 53 of the mounting portion 54. Therefore, as shown in FIGS. 1 and 2, when both sides of the stepping prevention guard 27 (28) are inserted into the holes 53 of the mounting portions 50, the protruding pins 78 are in a protruding state on both sides of the mounting portions 50. Thus, the stepping prevention guard 27 (28) is temporarily fixed to the mounting portion 50.

As described above, in the working scaffold 10 shown in FIGS. 1 and 2, the clue bars 22 to 25 are arranged along the extended lines of the upper portions of the leg columns 14 to 17 of the support legs 12 and 13. Therefore, the operator can easily and safely move from the upper part of the support legs 12 and 13 to the top plate 11 by gripping the clue bars 22 to 25 easily and firmly by hand. In addition, after the work is completed, the operator can easily and safely move from the top plate 11 to the upper portions of the support legs 12 and 13 while easily and firmly grasping the clue bars 22 to 25 by hand.
Further, since the step-off prevention guards 27 and 28 are mounted between the clue bars 22 and 24 and the clasp bars 23 and 25, respectively, even if the work is concentrated on the top plate 11, the body does not have the step-off prevention guard 27. , 28 can be detected, and the end of the top plate 11 can be sensed to prevent stepping and falling.

In addition, when ensuring the work activity range of an operator widely, the connection pin 68 provided in the locking means 26 is engaged with the 2nd engagement hole 48 formed in each clue bar 22-25, FIG. As indicated by a two-dot chain line, the height of the clue bars 22 to 25 protruding from the top plate 11 can be reduced (for example, 80 to 120 mm). Also in this case, the end of the top plate 11 can be sensed by the operator's feet coming into contact with the stepping-off prevention guards 27 and 28, and the stepping-off and falling can be prevented.

As shown in FIG. 17, the connection scaffold base 86 according to the first embodiment of the present invention is adjacent to a plurality of work scaffold bases 10 arranged in series (two in this embodiment). It has the connection scaffold member 87 which connects the scaffold 10 for work. The connecting scaffold member 87 includes, for example, a connecting scaffold plate 88 formed by attaching a scaffold plate to a rectangular frame body, and having a strength that can withstand even a plurality of workers, and a connecting scaffold plate 88. It has the connection latching member 89 provided in the both sides.
Here, for example, hooks having a plurality of hook shapes can be used for the connecting latch member 89, and the top plate 11 is engaged by engaging the front end thereof with the latch hole 11 a formed in the top plate 11. The connecting scaffold member 87 can be fixed to the frame. As a result, the worker can easily move from the top plate 11 of the work platform 10 to the top plate 11 of the adjacent work platform 10 via the connecting scaffold plate 88 to perform work.

Furthermore, a connecting tool 90 is provided at the end of the opposing stepping prevention guards 27, 28 provided on the adjacent work platform 10, and the same as the stepping prevention guards 27, 28, for example, via the connection tool 90. An auxiliary tread prevention guard 91 having an outer diameter is attached.
Here, the connector 90 can be formed of a short pipe having an inner diameter through which the step-off prevention guards 27 and 28 and the auxiliary step-off prevention guard 91 can be inserted, and provided at one end side of the step-off prevention guards 27 and 28. A hole 92 through which the tip 79 of the protruding pin 78 is inserted is provided.

With such a configuration, the connecting tool 90 can be temporarily fixed to one side of the stepping prevention guards 27 and 28 via the protruding pins 78, and one end of the auxiliary stepping prevention guard 91 is attached to the temporarily fixed connecting tool 90. By inserting the side, the stepping prevention guards 27 and 28 and the auxiliary stepping prevention guard 91 can be temporarily connected via the connector 90. And the other end side of the auxiliary | assistant step-off prevention guard 91 temporarily connected can be temporarily connected via the another connection tool 90 to the one side of the step-off prevention guards 27 and 28 of the adjacent work scaffold base 10. FIG.

As a result, the auxiliary step-off prevention guards 91 can be provided on both sides of the connecting scaffold member 87 in the width direction, and the body contacts the auxiliary step-off prevention guard 91 even when concentrated on the work on the connection scaffold member 87. The end portion of the coupling scaffold member 87 can be sensed, and the stepping off can be prevented.
In addition, when ensuring the work activity range of the worker on the connecting scaffold member 87, the height at which the clasp bars 22 to 25 of the work platform 10 on both sides protrude from the top plate 11 is reduced (for example, 80 to 120 mm), the installation height of the auxiliary stepping prevention guard 91 is lowered. Also in this case, when the operator's foot comes into contact with the auxiliary stepping-off prevention guard 91, the end of the coupling scaffold member 87 can be sensed, and it becomes possible to prevent stepping off and falling.

As shown in FIG. 18 (A), the working scaffold 93 according to the second embodiment of the present invention is compared to the working scaffold 10 according to the first embodiment, as shown in FIG. 97 except for the structure of the upper end of 97 and the structure of the anti-step-off guards 98 and 99 which are removably attached to the upper ends of the clasps 94 and 96, 95 and 97 provided on both sides of the top plate 11. It has the same configuration. Therefore, only the structure of the upper end portions of the clue bars 94 to 97 and the structure of the anti-step-off prevention guards 98 and 99 will be described in detail, and the same constituent members will be denoted by the same reference numerals and detailed description thereof will be omitted.
In the work platform 93, the locking means 26a has the same configuration as the locking means 26, but is mounted so that the operation portion 69 is on the back side with respect to the lifting surfaces of the support legs 12 and 13. . The folding coupling mechanisms 32a and 33a for attaching the support legs 12 and 13 to the top plate 11 have the same configuration as the folding coupling mechanisms 32 and 33, respectively, but the dimensions of the movable plate 36a of the folding coupling mechanism 32a are folded and coupled. It is formed larger than the movable plate 37a of the mechanism 33a.

As shown in FIGS. 19 and 20, side stoppers 100 are provided at the upper end portions of the respective clasp bars 94 to 97, and the stopper base portions 101 of the side stoppers 100 fitted into the clasp bars 94 to 97 are prevented from being stepped off. Protruding pins 103 for hooking connecting metal fittings 102 and 102a provided on both sides of the guards 98 and 99 are provided on the outer sides of the clasp bars 94 to 97 (on the same side as the lifting surfaces of the support legs 12 and 13). The clasp rod 94 (95) is connected to the step-off prevention guards 98, 99 using the connecting fitting 102a, and the clasp rod 96 (97) is connected to the step-off prevention guards 98, 99 using the connecting fitting 102a. It is.
Here, the protruding pin 103 has a cylindrical pin tip portion 104 having a hemispherical portion formed at the tip thereof, and a pin base portion 105 having a diameter larger than that of the pin tip portion 104, and an insertion hole in the center portion of the pin base portion 105. 106 is formed. The protruding pin 103 is inserted into a through hole 108 formed in the stopper base 101 with a spring 107 as an example of an elastic member inserted in the insertion hole 106. Further, each clasp bar 94 to 97 provided with the side stopper 100 is formed with a hole 109 through which the pin tip portion 104 of the protruding pin 103 can be inserted at a position corresponding to the through hole 108.

As shown in FIGS. 18 (A) and 18 (B), the step-off prevention guards 98 and 99 include a square pipe 110 with each corner projecting outward, and each corner of the square pipe 110 containing the square pipe 110 therein. A square pipe 111 having a similar shape that can move in the axial direction while being in contact with the inside.
Here, a side stopper 112 having a hollow base is fitted into one end of the square pipe 110 and the other end of the square pipe 111. Further, through holes 113 are formed on the opposite side surfaces on the base side of the side stopper 112 so as to be centered, and holes 114 are formed at positions of the square pipes 110 and 111 corresponding to the respective through holes 113. Further, on the base side of the side stopper 112, a pipe (collar) 114b that communicates with each through hole 113 is provided.

Further, as shown in FIGS. 19 and 20, the connection fitting 102 includes side plates 115 and 116 that are arranged in parallel and formed in substantially the same shape, and a connection plate 117 that connects the upper ends of the side plates 115 and 116. The rivet 121 is inserted between the main body 118, the pair of mounting plates 119, 120 formed so as to protrude parallel to one side of each side plate 115, 116, and the other side of each side plate 115, 116. The upper ends of the clue rods 96 and 97 have a cylindrical body 122 into which the clasp rods 96 and 97 can be fitted. The connection fitting 102a has substantially the same structure as the connection fitting 102, and is provided on the left and right sides of the connection fitting 102, ie, at the upper ends of the clue bars 94 and 95, with the anti-stepping guards 98 and 99 interposed therebetween. ing. In addition, the length of the side plates 115 and 116 of the connection fitting 102a is formed larger than the length of the side plates 115 and 116 of the connection fitting 102.
The mounting plates 119 and 120 are respectively formed with holes 123 in the center, and projecting pins 103 provided on the respective clasp bars 94 to 97 to be inserted penetrate the side portions of the cylindrical body 122. Each hole 124 is formed.

By adopting such a configuration, each of the mounting plates 119, 120 is arranged so that the center of each hole 123 provided in each mounting plate 119, 120 and each hole 114 provided in the square pipe 110 (111) coincide. By inserting the square pipe 110 (111) through the washer 124a between them and inserting the pin 125 into the pipe 114b, the connecting fittings 102 and 102a can be stepped off and rotated on both sides of the prevention guards 98 and 99, respectively. Can be fixed.
Further, the protruding pins 103 provided on the clue bars 94 to 97 can be biased outward by the spring 107. Therefore, when attaching the connecting metal fittings 102 and 102a to the clue bars 94 to 97, the upper ends of the clasp bars 94 to 97 are prevented from being projected from the clue bars 94 to 97 by pushing the projecting pins 103 inward. Can be inserted into the cylindrical body 122, and after the insertion, the pin tip portion 104 of the protruding pin 103 can be automatically protruded from the hole 124 of the cylindrical body 122. Pulling out from the upper end of ~ 97 can be prevented.

When the cylindrical body 122 is inclined so that its axial direction substantially coincides with the moving direction of the clue bars 94 to 97 and is attached so as to be sandwiched between the other sides of the side plates 115 and 116, each clasp bar is attached. When the upper ends of 94 (95) and 96 (97) are protruded from the top plate 11 so as to be substantially at the same height, the step-off prevention guard 98 (99) and the connection fittings 102 and 102a are connected. The plates 117 can be parallel. Therefore, by adjusting the center positions of the holes 123 provided in the mounting plates 119 and 120, the upper end positions of the step-off prevention guards 98 and 99 and the upper end position of the connecting plate 117 can be substantially matched. Furthermore, when the shape of the other side of the side plates 115 and 116 is formed in accordance with the inclination of the side portion of the cylindrical body 122, the clues are attached when the connecting fittings 102 and 102a are attached to the clue bars 94 (95) and 96 (97). The level difference between the rods 94 (95) and 96 (97) and the connecting fittings 102 and 102a can be reduced. Accordingly, it is possible to suppress the clothes of the worker from being caught on the clasp bars 94 to 97 and the connecting metal fittings 102 and 102a during lifting and lowering.

Further, the size of the movable plate 36a of the folding coupling mechanism 32a is formed larger than the movable plate 37a of the folding coupling mechanism 33a, and the lengths of the side plates 115, 116 of the coupling fitting 102a attached to the upper ends of the clue bars 94, 95 are clues. Since the length of the side plates 115 and 116 of the connecting metal fitting 102 attached to the upper ends of the bars 96 and 97 is larger than that of the top plate 11 when the support legs 12 and 13 are folded as shown in FIG. On the other hand, the support leg 12 can be arranged away from the support leg 13, and the support leg 13 can be accommodated between the support leg 12 and the top plate 11. Furthermore, since the operation part 69 of the lock means 26a is attached so as to be on the rear side with respect to the lifting surfaces of the support legs 12 and 13, the operation part 69 of the lock means 26a provided on the support leg 12 is folded. Between each support leg 12 and 13, the operation part 69 of the locking means 26a provided in the support leg 13 can be accommodated between the folded support leg 13 and the top plate 11, respectively. Thereby, the thickness of the working scaffold base 93 when folded can be reduced.

Next, a method for using the work scaffold 93 according to the second embodiment of the present invention will be described.
First, as shown in FIG. 21, the legs 12 and 13 of the folded working scaffold 93 are opened. Then, as shown in FIG. 22, the opening metal fitting 40 is extended to allow the work platform 93 to stand on its own. Note that the clue bar 94 (95) is held at a position below the tip of the pedestal 14 (15) and locked to the guide 18 (19). Further, the clue bar 96 (97) has its tip held at a position below the tip of the pedestal 16 (17) and is locked to the guide 20 (21). For this reason, the anti-step-off guard 98 connects the upper ends of the clasp bars 94 and 96, and the step-off prevention guard 99 connects the upper ends of the clasp bars 95 and 97, respectively, along the longitudinal direction on both sides of the top plate 11 in the width direction. It is arranged parallel to the lower position of the top plate 11.

Next, as shown in FIG. 23, for example, the lock of the clue bar 96 is released, and the clasp bar 96 is slid upward in the guide 20 and completely pulled out above the top plate 11 to be locked to the guide 20.
At this time, since the moved upward together with the coupling fitting 102 also clues rod 96 attached to the upper end of the clue rod 96, together with the height position of the connecting fitting 102a attached to the upper end of the clue rod 94 is gradually displaced The distance between the connecting fittings 102 and 102a increases. Here, since the connection fittings 102 and 102a are fixed to both sides of the stepping prevention guard 98 via pins 125, the stepping prevention guard 98 is moved along with the upward movement of the connection fitting 102 attached to the clasp rod 96. Slope gradually. And since the square pipe 110 can slide within the square pipe 111, the length of the step-off prevention guard 98 is gradually increased according to the distance between the connecting fittings 102 and 102a. Accordingly, only the clasp bar 96 can be completely pulled out above the top plate 11 with the step-off prevention guard 98 attached to the upper ends of the clasp bars 94, 96.

Subsequently, the lock of the clue bar 94 is released, and the clasp bar 94 is slid upward in the guide 18 and completely pulled out above the top plate 11 to be locked to the guide 18. At this time, since the connecting metal fitting 102a attached to the upper end of the clue bar 94 also moves upward together with the clue bar 94, the difference in height between the connecting metal fittings 102a, 102 attached to the upper ends of the clue bars 94, 96 gradually increases. And the distance between the connecting fittings 102 and 102a is reduced. Along with this, the step-off prevention guard 98 is housed while gradually sliding the square pipe 110 into the square pipe 111 while gradually reducing its inclination, and the length of the step-off prevention guard 98 is reduced. As a result, as shown in FIG. 18, the step-off prevention guard 98 is arranged in parallel to the top plate 11 at the upper ends of the clasp bars 94 and 96.
Further, the clue bars 95 and 97 are similarly completely pulled out above the top plate 11 and locked to the guides 19 and 21, respectively. As a result, the step-off prevention guards 98 and 99 can be installed while the clue bars 94 to 97 are installed on the work platform 93.

As shown in FIG. 24, the connection scaffolding 126 according to the second embodiment of the present invention includes a plurality of work scaffolds 93 arranged in series (two in this embodiment) and work adjacent to each other. The top plate 11 of the scaffold base 93 is connected, and a connecting scaffold member 87 provided with connecting latch members 89 on both sides is provided. Further, an auxiliary step-off prevention guard 127 is connected to opposite ends of the step-off prevention guards 98 and 99 provided on the adjacent work platform 93.
As shown in FIGS. 25 (A), (B), FIGS. 26 (A), (B), the auxiliary step-off prevention guard 127 is fixed to the guard body 128 and both sides of the guard body 128 via pins 129. Mounting brackets 130 and 130a are provided. Here, the guard main body 128 has, for example, a square pipe 131 with each corner portion protruding outward, and a square pipe 132 having a similar shape that houses each corner portion of the square pipe 131 in contact with each other. .

With such a configuration, the square pipe 131 can be slid in the axial direction in the square pipe 132, and as shown in FIGS. The auxiliary step-out prevention guard 127 can be extended by pulling it out from 132, or the square pipe 131 can be accommodated in the square pipe 132 and the auxiliary step-out prevention guard 127 can be shortened as shown in FIGS. it can.
Further, side stoppers 133 are fitted into one end of the square pipe 131 and the other end of the square pipe 132, respectively. A through hole 134 is formed in the side stopper 133, and a hole 135 is formed at the position of the square pipes 131 and 132 corresponding to the through hole 134.

As shown in FIGS. 27 (A), (B), and FIG. 28, the mounting brackets 130 (same for the mounting bracket 130a) are arranged in parallel and have side plates 136 (136a), 137 (137a) formed in substantially the same shape. ), A connecting plate 138 (138a) for connecting the upper ends of the side plates 136 (136a) and 137 (137a), and a locking means 26b provided on one side (the other side) of the side plate 136 (136a). ing. Here, the locking means 26 b has the same configuration as the locking means 26. The width of the connecting plate 138 (138a) is set so that a gap into which the connecting fitting 102 (102a) can be inserted is formed between the side plates 136 (136a) and 137 (137a). On the other side (one side), a hole 139 through which the connecting pin 68 of the locking means 26b passes is formed.
By adopting such a configuration, it is possible to connect the stepping prevention guards 98 and 99 provided on the clasp bar 94 (95) and the auxiliary stepping prevention guard 127 by covering the attachment fitting 130a with the connection fitting 102a. The stepping prevention guards 98 and 99 provided on the clue bar 96 (97) and the auxiliary stepping prevention guard 127 can be connected by covering the connection fitting 130 with the connection fitting 102. If a hole 140 through which the connecting pin 68 of the locking means 26b provided in the mounting metal 130 (130a) can be inserted is formed in the side plate 115 of the connecting metal 102 (102a), it is attached by the spring 70 of the locking means 26b. The biased connecting pin 68 can be withdrawn so that the connecting metal fitting 102 (102a) can be covered with the attachment metal 130 (130a), and the connecting pin 68 can be passed through the hole 140 through the hole 139. As a result, the attachment fitting 130 (130a) can be locked to the connection fitting 102 (102a) by the locking means 26b.

Then, the installation method of the auxiliary stepping prevention guard 127 is demonstrated.
First, as shown in FIG. 26, the mounting bracket 130 of the auxiliary step-off prevention guard 127 in the shortest length is put on the connecting bracket 102 provided on the step-off prevention guard 98 (99) of the work platform 93 and locked. Lock at 26b. Then, when the mounting bracket 130a of the auxiliary stepping prevention guard 127 is moved toward the stepping prevention guard 98 (99) of the adjacent work platform 93, the square pipe 131 is pulled out from the square pipe 132. For this reason, when the mounting bracket 130a moves to a position where it covers the connecting bracket 102a provided on the step-off prevention guard 98 (99) of the adjacent work platform 93, the length of the auxiliary step-off prevention guard 127 is adjacent. It is adjusted to an optimum length for connecting between the step-off prevention guards 98 (99).

Next, the mounting bracket 130a moved to the position where it covers the coupling fitting 102a is placed on the coupling fitting 102a and locked by the locking means 26b. As a result, the auxiliary step-off prevention guard 127 can be connected between the adjacent step-off prevention guards 98 (99).
As a result, the auxiliary step-off prevention guard 127 can be provided along the longitudinal direction above both sides of the connecting scaffold member 87 in the width direction, and the operator's body assists even when concentrated on the work on the connecting scaffold member 87. By contacting the stepping prevention guard 127, the end of the connecting scaffold member 87 can be sensed, and the stepping and falling can be prevented.

Since the mounting brackets 130 and 130a are fixed to both sides of the guard main body 128 via the pins 129, there is a difference in the height of the mounting brackets 130 and 130a fixed on the coupling brackets 102 and 102a. In addition, the mounting brackets 130 and 130a can be obliquely connected by the guard body 128. For this reason, in the state where the auxiliary step-off prevention guard 127 is connected between the step-off prevention guards 98 and 99 of the adjacent work platform 93, the clasp bars 94 to 97 of the work platform 93 are placed above the top plate 11. The protruding height can be adjusted individually.
For this reason, the installation height of the auxiliary step-off prevention guard 127 can be adjusted so as to ensure the work activity range of the worker on the connection scaffold member 87 according to the situation around the connection scaffold member 87, When the worker's body contacts the auxiliary stepping-off prevention guard 127, the end of the coupling scaffold member 87 can be sensed, and it becomes possible to prevent stepping off and falling.

As shown in FIGS. 29 and 30, the working scaffold 141 according to the third embodiment of the present invention is different from the working scaffold 10 according to the first embodiment in that each clue bar 142. The structure is the same except that the upper and lower structures of the guides 143 and the structures of the guides 143 provided on the outer sides of the leg posts 14 to 17 are different. For this reason, the same code | symbol is attached | subjected about the same structural member, and detailed description is abbreviate | omitted. Since each guide 143 is provided to the leg columns 14 to 17 by the same mounting method, the structure of the upper part and the lower part of the clue bar 142 is taken as an example in the case where the guide 143 is provided on the leg pillar 15. The structure of the guide 143 will be described in detail.
As shown in FIG. 29, the lower side of the tubular joint member 144 is fitted into the upper part of the clue bar 142, and is fixed to the through hole formed in communication with the upper part of the clasp bar 142 and the lower side of the fitted joint member 144. The pin 145 is fitted to the upper portion of the clue bar 142. Further, a protruding pin 145 a is provided on the inner upper end of the clue bar 142. Furthermore, a side stopper 146 having a hollow base side is fitted into the upper portion of the joint member 144. A pipe (collar) 147 communicating with a through hole formed through the side stopper 146 fitted with the joint member 144 is provided, and a mounting pin 148 is inserted into the pipe 147 so that the side stopper is formed above the joint member 144. 146 is fixed.

As shown in FIG. 30, a wedge member 150 that is an example of a guide member that also serves as a stopper and constitutes a part of the angle correction mechanism 149 is provided at the outer lower portion of the clue bar 142. Here, the wedge member 150 includes a main body 151 having an inclined portion on the front side and a protrusion 152 provided on the base side of the main body 151. A plurality of protrusions 153 are formed on the back side of the main body 151. Then, by inserting the protrusions 153 formed on the main body 151 into a plurality of hooking holes (two in this embodiment) formed in the axial direction in the lower part of the outer side of the clue bar 142, the back surface side of the main body 151 Can be brought into contact with the outer lower portion of the clasp bar 142, and is formed on the outer lower portion of the clasp bar 142 so as to communicate with a stepped insertion hole 154 formed at the center of the main body 151 and having an enlarged opening side (front side). By screwing a set screw 155 into the formed screw hole, the wedge member 150 can be provided on the outer lower portion of the clasp bar 142.
Further, an engagement hole 156 is formed in the lower part of the surface adjacent to the surface to which the wedge member 150 is attached at the lower part of the clue bar 142, and is formed on the side part of the side stopper 157 provided at the lower part of the clue bar 142. The engaging protrusion 158 is inserted into the engaging hole 156.

As shown in FIGS. 29 and 30, the guide groove 143 has a square groove 55 on the side of the pedestal 15, that is, on the center portion of the guide rod 143 opposite to the wedge member 150. A first angle correction pin 159 that is an example of a pin that penetrates the shaft and constitutes a part of the angle correction mechanism 149 is provided. A second angle correction pin 160 that penetrates the back side and constitutes a part of the angle correction mechanism 149 is provided. Here, by adjusting the center positions of the first and second angle correction pins 159 and 160, the direction of the line segment connecting the centers of the first and second angle correction pins 159 and 160 and the horizontal direction of the top plate 11 are adjusted. The angle made with the direction is made substantially vertical.

With such a configuration, the clue bar 142 is brought into contact with the inner side surfaces 60 and 61 (see FIG. 5) of the square groove portion 55 and the side portion of the second angle correction pin 160 to move up and down while regulating the sliding direction. Can be made. Then, when the clue bar 142 is lowered, the head of the projecting pin 145a comes into contact with the side of the second angle correction pin 160, so that the descent of the clue bar 142 is stopped and the drop from the angular groove 55 is prevented. Can be prevented.
Further, when the clue bar 142 is raised in the square groove portion 55, the wedge member 150 starts to enter the square groove portion 55 together with the clue rod 142. When the main body portion 151 of the wedge member 150 enters the square groove portion 55, the upper side of the clasp bar 142 gradually moves outward in the square groove portion 55 according to the thickness of the inclined portion of the main body portion 151 that has entered. The angle between the axial direction of the clue bar 142 and the horizontal direction of the top plate 11 is corrected so as to gradually increase (approach 90 °). When the protrusion 152 provided on the base side of the main body 151 comes into contact with the lower edge of the square groove 55, the raising of the clue bar 142 stops, and the lower part of the clue bar 142 holds the wedge member 150. Via the bottom surface 62 of the angular groove 55 and the first and second angle correction pins 159 and 160. Thereby, the tilting of the clue bar 142 is stopped, and the axial direction of the clasp bar 142 and the horizontal direction of the top plate 11 are held so as to be substantially vertical.

Next, a method of using the work platform 141 according to the third embodiment of the present invention will be described. The method of using the work platform 141 is different from the method of using the work platform 10 with respect to the guide 143. Since the operation is substantially the same except that the operation of the cue bar 142 is different, only the operation of the cue bar 142 with respect to the guide 143 will be described.
As shown in FIG. 29, by pulling up the dome portion 67 of the operation portion 69 of the lock means 26, the connecting pin 68 is retracted, and the clasp bar 142 is unlocked. Then, by holding the operating portion 69 in the raised state, the clue bar 142 can be inserted through the guide 143, and the clue bar 142 is inserted into the inner side surfaces 60 and 61 of the square groove portion 55 and the second angle correction pin. The clue bar 142 is made to protrude above the top plate 11 by sliding while being brought into contact with the side portion of 160.

Then, as shown in FIG. 30, when the wedge member 150 provided at the lower end of the clasp bar 142 enters the square groove 55 of the guide 143, the clasp bar 142 is gradually tilted so that its protruding direction faces outward. Then, the angle formed by the axial direction of the clue bar 142 and the horizontal direction of the top plate 11 gradually increases (approaches 90 °). Then, when the protruding portion 152 of the main body 151 comes into contact with the lower edge of the square groove portion 55, it is sensed that the raising of the clue bar 142 is stopped and the clue bar 142 is completely pulled out. The Further, when the raising of the clue bar 142 stops, the lower part of the clue bar 142 is gripped by the bottom surface 62 of the angular groove 55 and the first and second angle correction pins 159, 160 via the wedge member 150. Thus, it is provided on the pedestal 14 that is paired with the pedestal 15 and is parallel to the clue bar 142 that is similarly extended to the uppermost position.
Here, if the position is adjusted in advance so that the insertion hole 74 formed in the square groove portion 55 and the center of the third engagement hole 49 formed in the clue bar 142 coincide, the dome portion of the operation portion 69 By moving 67 downward, the connecting pin 68 provided in the operation portion 69 can be fitted into the third engagement hole 49 formed in the clasp bar 142 via the insertion hole 74 formed in the square groove portion 55. The clue bar 142 can be locked to the guide 143, and the clue bar 142 can be held in a fully pulled out state.

As shown in FIGS. 31 and 32, the work scaffold 161 according to the fourth embodiment of the present invention is different from the work scaffold 141 according to the third embodiment in each clue bar 162. The structure is the same except that the structure of the lower part and the structure of each guide 163 are different. For this reason, the same code | symbol is attached | subjected about the same structural member, and detailed description is abbreviate | omitted.
As shown in FIGS. 31 and 32, an angle correction pin 165 that forms a part of the angle correction mechanism 164 that penetrates from the front side to the back side of the guide 163 on the upper part of the square groove portion 55 of the guide 163 on the leg column 15 side. Is provided. Further, a slope cam portion 166 made of a notch constituting a part of the angle correction mechanism 164 is formed on the front side of the angular groove portion 55 of the guide 163, that is, on the lower end central portion on the lifting surface side of the support legs 12 and 13. ing.
As shown in FIG. 32, a side stopper 167 is fitted in the lower part of the clue bar 162, and a part of the angle correction mechanism 164 is formed in a through hole formed in communication with the lower part of the clue bar 162 and the inserted side stopper 167. The lower portion of the clasp bar 162 is fixed to the guide 163 by fitting a protruding pin 168 whose head side projects from the front side of the clasp bar 162.

With such a configuration, the clue bar 162 can be lifted and lowered while abutting on the inner side surfaces 60 and 61 of the square groove portion 55 and the side portions of the angle correction pin 165 to regulate the sliding direction. When the clue bar 162 is raised in the square groove portion 55, the projecting pin 168 enters the notch of the gradient cam portion 166 and moves along the edge portion 169 of the notch. Here, the shape of the notch of the gradient cam 166 is a shape in which the skirt extends to the opposite side of the pedestal 15 with respect to the center line of the guide 163. As a result, the rising projecting pin 168 can easily enter the notch of the gradient cam portion 166. In addition, as a shape of a notch, it is good also as a shape where the base was extended on both sides with respect to the centerline of the guide 163. FIG. The clue bar 162 is gradually tilted outward while the inner surface of the clasp bar 162 is in contact with the side portion of the angle correction pin 165, and the angle formed by the axial direction of the clue bar 162 and the horizontal direction of the top plate 11 gradually increases. Is corrected (approaching 90 °). When the protruding pin 168 is engaged with the gradient cam portion 166, the raising of the clue bar 162 is stopped, and the lower end portion of the clasp bar 162 is fixed to the lower side of the square groove portion 55 via the protruding pin 168, The lower portion of the clue bar 162 is gripped by the upper end portion of the bottom surface 62 of the square groove portion 55 and the angle correction pin 165. Accordingly, the tilt of the clue bar 162 is stopped and the corrected angle is maintained.

Next, a method for using the work platform 161 according to the fourth exemplary embodiment of the present invention will be described. The method for using the work platform 161 is more effective for the guide 163 than the method for using the work platform 141. Since it is substantially the same except that the operation of the clue bar 162 is different, only the operation of the clue bar 162 with respect to the guide 163 will be described.
As shown in FIG. 31, the lock means 26 is operated to unlock the clasp bar 162, and the clasp bar 162 is brought into contact with the inner side surfaces 60 and 61 of the angular groove 55 of the guide 163 and the side of the angle correction pin 165. The clue bar 162 is projected above the top plate 11 by sliding while contacting.
Then, as shown in FIG. 32, the protruding pin 168 provided at the lower end of the clue bar 162 enters the gradient cam portion 166 provided on the guide 163 and moves along the edge portion 169, so that the clasp bar 162 is square. In the groove 55, the traveling direction is gradually tilted outward, and the angle formed by the axial direction of the clue bar 162 and the horizontal direction of the top plate 11 gradually increases (approaches 90 °).

Then, when the protruding pin 168 engages with the gradient cam portion 166, it is detected that the raising of the clue bar 162 is stopped and the clue bar 162 is completely pulled out. Further, when the raising of the clue bar 162 stops, the lower end portion of the clue bar 162 is gripped by the lower side of the square groove portion 55 via the protruding pin 168, and the axial direction of the clasp bar 162 and the top plate 11 is held in such a manner that the angle formed with the horizontal direction is substantially 90 °, and is provided on the pedestal 14 that is paired with the pedestal 15 and is parallel to the cue bar 142 that is also extended to the uppermost position. It becomes.
Next, the dome portion 67 of the operation portion 69 is moved downward, and the connecting pin 68 is fitted into the third engaging hole 49 formed in the clasp rod 162 through the insertion hole 74 formed in the square groove portion 55, and the clasp rod is inserted. 162 is locked to the guide 163, and the clue bar 162 is held in a fully drawn state.

As shown in FIGS. 33 and 34, the work platform 170 according to the fifth embodiment of the present invention is compared with the work platform 161 according to the fourth embodiment. The structure is the same except that the structure of the upper part and the structure of the guide 172 are different. For this reason, the same code | symbol is attached | subjected about the same structural member, and detailed description is abbreviate | omitted.
As shown in FIGS. 33 and 34, a notch constituting a part of the clue bar holding mechanism 173 is formed on the front side of the square groove portion 55 of the guide 172, that is, on the center of the upper end of the support legs 12, 13. A second gradient cam portion 174 is formed. Further, the lower side of the tubular joint member 175 is fitted into the upper portion of the clue bar 171, and the clasp bar holding mechanism 173 is inserted into a through hole formed in communication with the upper side of the clasp bar 171 and the lower side of the fitted joint member 175. The upper part of the clasp bar 171 is fixed to the guide 172 by inserting a second projecting pin 176 that forms a part and the head side projects from the front side of the clasp bar 171, that is, the lifting surface side of the support legs 12, 13. ing.

With this configuration, when the clue bar 171 is lowered in the square groove portion 55, the second protruding pin 176 enters the notch of the second gradient cam portion 174, and the edge of the notch Move along 177. As a result, the second projecting pin 176 enters the notch of the second gradient cam portion 174 and moves along the notch edge 177 immediately before the clue bar 171 descends to the lowest position in the guide 172. When the second gradient cam portion 174 is engaged, the clue bar 171 fitted in the guide 172 becomes substantially parallel to the leg column 15 and rattling is prevented.

Next, a method of using the work platform 170 according to the fifth embodiment of the present invention will be described. The method of using the work platform 170 is a clue bar 171 compared to the method of using the work platform 161. Since the operation is substantially the same except that the operation for lowering and retracting along the pedestal 15 is different, only the operation for lowering and storing the clue bar 171 will be described.
As shown in FIG. 34, the lock means 26 of the raised clasp bar 171 is operated to unlock the clasp bar 171, and the clasp bar 171 is corrected to the inner side surfaces 60 and 61 of the angular groove 55 of the guide 172 and the angle correction. The clue bar 171 is lowered by sliding while making contact with the side of the pin 165. When the clue bar 171 is lowered by the square groove portion 55, the second projecting pin 176 enters the notch of the second gradient cam portion 174 and moves along the edge portion 177 of the notch. The protruding pin 176 engages with the second gradient cam portion 174. As a result, the descending of the clue bar 171 is stopped, the axial direction of the clue bar 171 is held parallel to the axial direction of the leg column 15, and rattling is prevented.

As shown in FIG. 35, the working scaffold base 178 according to the sixth embodiment of the present invention is compared with the working scaffold base 10 according to the first embodiment, and the cue sticks 179 to 182 and the stepping off. The structure is the same except that the structure of the prevention guard 183 is different, and the clasp bars 179 and 181 (180 and 182) which are paired are provided with an intermediate beam member 184 and a baseboard member 185. It has become. For this reason, the same code | symbol is attached | subjected about the same structural member, and detailed description is abbreviate | omitted. The lock means 186 provided on the guides 18 to 21 of the work platform 178 has the same configuration as the lock means 26 of the work platform 10, but the operation unit 69 is a lifting surface of the support legs 12 and 13. Is attached to the rear side. In the work platform 178, the folding connection mechanisms 187 and 188 for attaching the support legs 12 and 13 to the top plate 11 have the same configuration as the folding connection mechanisms 32 and 33 of the work platform 10, respectively. The dimension of the movable plate 189 of the folding connection mechanism 187 is larger than that of the movable plate 190 of the folding connection mechanism 188.

Here, since each clue bar 179 to 182 is provided on the leg pillars 14 to 17 by using the guides 18 to 21, respectively, as shown in FIG. The clue bar 181 provided using the guide 20 will be described in detail as an example.
The clue bar 181 includes an outer pipe member 191 that moves up and down along a guide 20 provided on the pedestal 16, an inner pipe member 192 that is housed inside the outer pipe member 191 and pulled out during use, and a drawn inner pipe member Fixing means 193 for fixing 192 to the outer tube member 191 is provided.
As shown in FIG. 36 (B), the inner pipe member 192 includes a square pipe 194 with each corner projecting outward, and a side stopper 196 that is fitted to the upper end side of the square pipe 194 and fixed via a projecting pin 195. have. Here, the projecting pin 195 has a cylindrical tip portion 197 having a rounded tip, and a base portion 198 having a diameter larger than that of the tip portion 197. A spring 199 which is an example of a member is inserted. The protruding pin 195 is inserted into the through hole 200 formed in the side stopper 196 fitted into the square pipe 194 with the spring 199 inserted, and the tip portion 197 of the protruding pin 195 is the upper end of the square pipe 194. It protrudes from the insertion hole formed in the side part of the side. As a result, the inserted side stopper 196 can be prevented from falling off the square pipe 194.

The outer tube member 191 that moves up and down along the guide 20 is a corner having a similar shape in which the square pipe 194 is housed inside, and the corners of the square pipe 194 are moved in the axial direction while abutting each corner to the inside to protrude from the upper end side. It has a pipe 201. And the upper stopper 202 is provided in the side surface of the upper end side of the square pipe 201 used as the back side with respect to the raising / lowering surface of the support legs 12 and 13. FIG. Further, a side stopper (not shown) is fitted on the lower end side of the square pipe 201, and a lower stopper is provided on the side surface on the lower end side. By providing the upper stopper 202, it is possible to prevent the outer tube member 191 from dropping from the guide 20 when the outer tube member 191 is lowered along the guide 20. Further, by providing the lower stopper, it is possible to prevent the outer tube member 191 from coming out of the guide 20 when the outer tube member 191 is raised along the guide 20.

The fixing means 193 is provided on the lower end side of the square pipe 194 of the inner pipe member 192, and the latching portion 204 having the latch pin 203 projecting from one side surface of the square pipe 194, and the latch pin 203 project. It has a plurality of insertion holes 205 that are formed side by side along the longitudinal direction on the side surface of the square pipe 201 facing the side surface and into which the latch pin 203 can be inserted. Here, the latch pin 203 can have the same configuration as the protruding pin 195, for example, and therefore the same reference numeral is given and detailed description is omitted. As a result, the length of the clasp bar 181 can be adjusted while the length of the clasp bar 181 is maintained by inserting the latch pin 203 into the desired insertion hole 205 while pulling the inner tube member 192 out of the outer tube member 191. can do.
Furthermore, by making the outer diameters of the connecting pin 68 of the locking means 186 and the latching pin 203 substantially the same, the square pipe 201 is lowered to insert the connecting pin 68 of the locking means 186 at the uppermost position. The outer tube member 191 can be fixed to the guide 20 at the lowest position. Further, the connecting pin 68 can be fitted into the insertion hole 205 while raising and lowering the outer tube member 191 along the guide 20, and the length of the outer tube member 191 drawn out from the guide 20 can be adjusted. Can be maintained.

The step-off prevention guard 183 can have the same configuration as the step-off prevention guards 98 and 99 of the work platform 93 according to the second embodiment. Then, by constructing a temporary fixing means 206 having a protruding pin 195 provided on the clue bar 179 to 182 and a hole 124 provided in the connecting metal fittings 102 and 102a through which the protruding pin 195 is inserted, the stepping prevention guard 183 is paired. Thus, it is possible to prevent the clue rods 179 and 181 (180 and 182) from being pulled out by being temporarily fixed.
Here, the distance between the upper ends of the cue rods 179 and 181 (180 and 182) which are paired in the state of being pulled out to the maximum length is substantially equal to the distance between the respective cylindrical bodies 122 of the connecting fittings 102 and 102a. When the lengths of the square pipes 110 and 111 are adjusted so as to coincide with each other, even if the distance between the upper ends of the pair of clue bars 179 and 181 (180 and 182) changes, the step-off prevention guard 183 can be always attached. It becomes possible.

As shown in FIGS. 37 (A) and 37 (B), the intermediate beam member 184 for connecting the intermediate position of the pair of clue bars 179, 181 (180, 182) in parallel with the top plate 11 The cross section arranged in parallel along the longitudinal direction has, for example, a square-shaped cross beam member 208 and attachment portions 209 provided on both sides of the cross beam member 208. Further, the mounting portion 209 has a U-shaped cross section and covers each of the clasp bars 179 to 182 from the outside (the outside in the width direction of the support legs 12 and 13), for example, with respect to the upper portion of the outer tube member 191. The contact member 210 and the contact member 210 in a state of covering the outer tube member 191 are provided with connecting means 211 provided on the side surfaces of the support legs 12 and 13 that appear on the ascending / descending surface side. Here, as the connecting means 211, for example, the same structure as that of the locking means 26 of the work platform 10 can be used.
With such a configuration, as shown in FIGS. 38A and 38B, the attachment portion 209 is covered with the outer tube member 191, and the connection pin 68 of the connection means 211 is formed on the side surface of the outer tube member 191. The attachment portion 209 can be hooked to the outer tube member 191 by being fitted into the insertion hole 212, and the connecting pin 68 of the attachment portion 209 hooked to the outer tube member 191 is retracted from the insertion hole 212. By doing so, the attachment portion 209 can be removed, so that the middle crosspiece member 184 can be detachably connected to the intermediate portion position of the pair of clue bars 179, 181 (180, 182).

Connected in parallel to the top plate 11 while the lower end surface is in contact with the upper surface of the top plate 11, for example, at a position below the intermediate portion of the pair of clue bars 179 and 181 (180, 182) and above the top plate 11. As shown in FIGS. 39A and 39B, the skirting board member 185 provided in this way is arranged in parallel along the longitudinal direction of the top plate 11 and has a cross-section having a rectangular base board body 214, for example. And second attachment portions 215 provided on both sides of the baseboard main body 214. Further, the second mounting portion 215 has a U-shaped cross section and covers each of the clue bars 179 to 182 from, for example, the outer tube member 191 from the outside (the outside in the width direction of the support legs 12 and 13). The second abutting member 216 and the second abutting member 216 in a state of covering the outer tube member 191 are provided with second connecting means 217 provided on the side surface that appears on the lifting surface side of the support legs 12 and 13. is doing. Here, as the second connecting means 217, for example, the same structure as the locking means 26 of the work platform 10 can be used.
With this configuration, the second mounting portion 215 is covered with the outer tube member 191, and the connection pin 68 of the second connection means 217 is fitted into the insertion hole formed on the side surface of the outer tube member 191. The second mounting portion 215 can be hooked on the outer tube member 191 and the connection pin of the second mounting portion 215 hooked on the outer tube member 191 is retracted from the insertion hole by moving the 68 from the insertion hole. Since the two attachment portions 215 can be removed, the skirting member 185 can be detachably coupled to the pair of clue bars 179 and 181 (180 and 182).

Next, a method for using the work platform 178 according to the sixth embodiment of the present invention will be described. The method for using the work platform 178 is different from the method for using the work platform 10 in each case. Except that the operation of the clasp bars 179 to 182 is different from the mounting operation of each of the step-off prevention guards 183 and that the intermediate clasp members 184 and the baseboard members 185 are provided on the pair of clue bars 179, 181 (180, 182). Are substantially the same. Therefore, only the method for operating the clue bars 179 to 182, the method for attaching the step-off prevention guard 183, and the method for attaching the intermediate beam member 184 and the baseboard member 185 to the pair of clue bars 179 and 181 (180, 182) will be described. .
First, as shown in FIG. 40, the folded support legs 12 and 13 are unfolded to allow the work platform 178 to stand on its own. At this time, in each of the clue bars 179 (180) and 181 (182), the inner tube member 192 is accommodated in the outer tube member 191 except for the tip portion, and the tip portion of the inner tube member 192 is the pedestal 14 (15). , 16 (17) is held at a position below the tip. Further, the connecting pin 68 of each locking means 186 is fitted into an insertion hole 205 formed at the uppermost position of the square pipe 201, and each clue bar 179 (180), 181 (182) is a guide 18 (19), 20 ( 21).

Next, the operation part 69 of the lock means 186 is operated to unlock the outer tube member 191 of each clue bar 179 (180), 181 (182). Then, holding the operation unit 69 in the raised state, the outer tube member 191 is slid in the guides 18 (19) and 20 (21), and the outer tube member 191 is protruded above the top plate 11. Go. And the lower stopper attached to the lower end of the outer tube member 191 of each clue bar 179 (180), 181 (182) is the corner groove portion 55 (see FIG. 5) of each guide 18 (19), 20 (21). By hitting the lower end, it is sensed that the outer tube member 191 of each clue bar 179 (180), 181 (182) has been completely pulled out.
Next, the inner tube member 192 is pulled out from the outer tube member 191. At this time, the latch pin 203 provided on the lower end side of the square pipe 194 of the inner pipe member 192 is sequentially fitted into the insertion hole 205 formed in the square pipe 201 of the outer pipe member 191 when pulled out. When the inner pipe member 192 needs to be further pulled out, the inserted latch pin 203 is withdrawn from the insertion hole 205 and pulled out while releasing the latched state. Then, when the inner pipe member 192 is in a hooked state with a desired length, the drawing of the inner pipe member 192 is stopped.

Subsequently, as shown in FIG. 41, when the inner tube member 192 of each clue bar 179 (180), 181 (182) is pulled out to a desired length, the pair of clue bars 179, 181 (180, 182) Among them, for example, the upper end portion of the inner tube member 192 of the clue bar 179 (180) is covered with the connecting fitting 102a of the anti-step-off guard 183. As a result, the upper end portion of the inner pipe member 192 is inserted into the cylindrical body 122 of the connection fitting 102a, the protruding pin 195 is fitted into the hole 124 (see FIG. 19), and one end side of the step-off prevention guard 183 is connected to the connection fitting 102a. Can be temporarily fixed to the upper end of the clue bar 179 (180). Then, when the connecting fitting 102 on the other end side of the stepping prevention guard 183 is moved toward the upper end portion of the clasp bar 181 (182), the square pipe 110 is pulled out from the square pipe 111, and paired clasp bars 179, 181 are obtained. (180, 182) can be adjusted to an optimum length for connecting the two. When the connection fitting 102 reaches a position where it covers the upper end portion of the clue bar 181 (182), the upper end portion of the inner tube member 192 is inserted into the cylindrical body 122 of the connection fitting 102, and the protruding pin 195 is fitted into the hole 124. The other end side of the stepping prevention guard 183 can be temporarily fixed to the upper end portion of the clue bar 181 (182) via the connecting fitting 102.

Next, the connection pins 68 of the connection means 211 provided on each attachment portion 209 of the intermediate beam member 184 are pulled up by operating the operation portion 69, and then the attachment portions 209 are respectively covered from outside the upper portion of the outer tube member 191. The position is adjusted so that 68 can be inserted into the insertion hole 212 formed on the side surface. Then, when the position adjustment of the attachment portion 209 is completed, the operation portion 69 is operated to insert the connecting pin 68 into the insertion hole 212. As a result, the attachment portion 209 of the intermediate beam member 184 can be fixed to the upper portion of each outer tube member 191, and the intermediate portion position of the pair of clue bars 179 and 181 (180, 182) is parallel to the top plate 11. It can be connected by an intermediate beam member 184.
Subsequently, the connecting pin 68 of the second connecting means 217 provided on each second mounting portion 215 of the baseboard member 185 is pulled up by operating the operating portion 69, and then the lower end surface of the baseboard main body 214 is the top plate. 11, the second mounting portions 215 on both sides are respectively covered from the lower outer side of the outer tube member 191 so as to contact the upper surface of the outer tube member 191, and the connecting pin 68 of the second connecting means 217 is formed on the side surface of the outer tube member 191. Fit into the hole. As a result, the second mounting portion 215 of the skirting member 185 can be fixed to the lower portion of each outer tube member 191, and the top plate 11 has a lower end surface between the pair of clue bars 179, 181 (180, 182). Can be connected by a baseboard member 185 in contact with the upper surface.

As shown in FIGS. 42 to 45, the work platform 218 according to the seventh embodiment of the present invention is different from the work platform 10 according to the first embodiment in each clue bar 219. Of the upper and lower portions of the door, the structures of the guides 220 provided on the front and rear sides of the pedestals 14 to 17, and the anti-step-off guard 221 attached to the pair of clue bars 219 protruding on the left and right sides of the top plate 11. The structure is different from each other, and an auxiliary guard 222 is provided on the upper end of a pair of clue bar 219 projecting on both the front and rear sides of the top plate 11 via a connection fitting 221a of the anti-step-off guard 221. It has become. For this reason, the same code | symbol is attached | subjected about the same structural member, and detailed description is abbreviate | omitted. Since each guide 220 is provided to the leg columns 14 to 17 by the same mounting method, the structure of the upper part and the lower part of the clue bar 219 is taken as an example in which the guide 220 is provided on the leg pillar 16. The structure of the guide 220 will be described in detail.

As shown in FIG. 42, a side stopper 223 is fitted on the upper portion of the clasp bar 219, and the clasp bar 219 is projected to the clasp bar 219 by the protruding pin 224 projecting from the upper end of the side surface of the clasp bar 219 on the support leg 13 side. It is fixed. Here, the projecting pin 224 has a cylindrical tip portion 225 having a rounded tip, and a base portion 226 having a diameter larger than that of the tip portion 225. A spring 227, which is an example of a member, is inserted. The protruding pin 224 is inserted into the through hole 228 formed in the side stopper 223 with the spring 227 inserted, and the tip 225 of the protruding pin 224 is placed on the side of the upper end portion side of the clasp bar 219. It protrudes from the formed insertion hole. As a result, the connection fitting 221a of the stepping prevention guard 221 can be hooked. Further, a retaining pin 228 a is provided at a position below the protruding pin 224 on the outer side of the clue bar 219. When the head of the retaining pin 228a comes into contact with the upper end portion of the guide 220, the lowering of the clue bar 219 is stopped, and the drop from the guide 220 can be prevented.

The guide 220 further includes a lower end of a side surface opposed to the front and rear outer surfaces of the clue bar 219 in the square groove portion 55 (see FIG. 30) of the guide 143 used in the work platform 141 according to the third embodiment. A third gradient cam portion 230 is formed at the center portion. The third gradient cam portion 230 is a notch that forms part of the second angle correction mechanism 229. Here, the shape of the notch is, for example, a shape in which the base extends symmetrically with respect to the center line of the side surface facing the outer surface of the clue bar 219. Further, in the rectangular groove portion 55 of the guide 220, the left and right side surfaces adjacent to the side surfaces on the left and right sides adjacent to the side surfaces facing the front and rear outer surfaces of the clue bar 219, that is, the side surfaces on which the third gradient cam portions 230 are formed. An angle correcting member 231 that constitutes a part of the second angle correcting mechanism 229 and has an inclined portion on the front side is provided at the center of the upper end of the side surface in the direction.
As shown in FIG. 43, a side stopper 232 is fitted into the lower portion of the clue bar 219, and the second angle correcting mechanism 229 is formed in a through hole formed in communication with the side stopper 232 fitted into the lower portion of the clue bar 219. A protrusion pin 233 that is part of the head and protrudes from the front side of the clue bar 219 is fitted into the lower part of the clue bar 219.

Further, in the square groove portion 55 of the guide 220, an insertion hole 234 is formed in the central portion of the side surface where the angle correcting member 231 is provided, and the locking means 26 used in the work platform 10 according to the first embodiment. Is provided so that the connecting pin 68 can be inserted into the insertion hole 234. Then, by forming an insertion hole 235 into which the connection pin 68 can be inserted in the upper part of the side surface of the lock bar 219 facing the connection pin 68, the stored hold key (lowered to the lowest position along the leg column 16). 219 can be fixed to the pedestal 16 via the guide 220.

With such a configuration, the clue bar 219 can be lifted and lowered while being in contact with the inner side surfaces 60 and 61 of the angular groove portion 55 and the angle correcting member 231. When the clue bar 219 is raised in the square groove portion 55, the projecting pin 233 enters the notch of the third gradient cam portion 230 and moves along the edge of the notch. As a result, the clue bar 219 is gradually tilted outward while the inner surface of the clasp bar 219 is in contact with the angle correction member 231, and the angle formed by the axial direction of the clue bar 219 and the horizontal direction of the top plate 11 gradually increases. Is corrected (approaching 90 °). When the protruding pin 233 engages with the third gradient cam portion 230, the raising of the clue bar 219 stops and the lower end of the clasp bar 219 is moved to the lower side of the angular groove portion 55 via the protruding pin 233. It is fixed and the rotation stops. Then, by forming an insertion hole 236 into which the connecting pin 68 can be inserted in the lower portion of the side surface of the clasp bar 219 facing the connecting pin 68, the clue bar 219 pulled out along the leg pillar 16 can be fixed to the guide 220. it can.

As shown in FIGS. 44 and 45, the auxiliary guard 222 includes a mounting portion 238 formed into a flat plate shape by crushing both ends of a hollow cylindrical body having a convex portion with an arc-shaped cross section from the convex portion side. Each attachment portion 238 is provided with an attachment member 240 so as to be inserted into a hole formed in the central portion thereof from the convex portion side and protrude to the opposite side. Here, the mounting member 240 is provided with a cylindrical end plate 243 provided with a flange on one side and a slit 242 formed in the axial direction from the other end side to the one side, and penetrating the other end side. A stopper 246 is mounted in the cylindrical member 243 via the pin 244 and is urged by a leaf spring 245 so that the tip protrudes from the slit 242.

The step-off prevention guard 221 is characterized in that, in the step-off prevention guard 98 used in the work platform 93 according to the second embodiment, the constituent members of the coupling fittings 102, 102a are partially different. For this reason, about the same component, the same code | symbol is attached | subjected and description is abbreviate | omitted.
In the connection fitting 221 a of the stepping prevention guard 221, an insertion hole 248 through which the cylindrical member 243 of the mounting member 240 can be inserted is formed at the center of the connection plate 247 that connects the side plates 115 and 116. Accordingly, the cylindrical member 243 of the attachment member 240 can be inserted into the connecting metal fitting 221a and can be hooked by the stopper 246, and the guard is prevented from being stepped off at the upper end of the pair of the clue bar 219 protruding from the front and rear sides of the top plate 11. An auxiliary guard 222 can be provided via the connecting member 221a of 221. In the step-off prevention guard 221, the side plates 115 and 116 of the connecting fittings 221a on both sides may have the same length.

Next, a method for using the work scaffold base 218 according to the seventh embodiment of the present invention will be described. The method for using the work scaffold base 218 is based on the guide 220 as compared to the method for using the work scaffold base 10. This is substantially the same except that the operation of the clue bar 219 is different and that the anti-step-off guard 221 and the auxiliary guard 222 are attached to the clue bar 219. Only the operation of attaching the prevention guard 221 and the auxiliary guard 222 will be described.
As shown in FIG. 42, the locking means 26 is operated to unlock the clue bar 219, and the clasp bar 219 is moved to the inner side surfaces 60 and 61 (see FIG. 30) of the angular groove 55 of the guide 220, and the second angle correction. By sliding the pin 160 (see FIG. 30) while being in contact with the side of the pin 160 (see FIG. 30) and the angle correction member 231, the clue bar 219 protrudes above the top plate 11.

Then, when the wedge member 150 provided at the lower end of the clue bar 219 enters the square groove portion 55 of the guide 220, the clue bar 219 is gradually tilted so that the protruding direction faces outward, and the shaft of the clue bar 219 is The angle formed by the direction and the horizontal direction before and after the top plate 11 gradually increases (approaches 90 °). When the protrusion 152 (see FIG. 30) of the main body 151 comes into contact with the lower edge of the square groove 55, the lifting of the clasp bar 219 stops, and the lower part of the clasp bar 219 is the wedge member 150 (FIG. 30). Through the bottom surface 62 of the square groove portion 55 and the first and second angle correction pins 159 and 160. On the other hand, when the clue bar 219 is raised in the square groove portion 55, as shown in FIG. 43, the projecting pin 233 enters the notch of the third gradient cam portion 230 and extends along the edge of the notch. Moving. As a result, the clue bar 219 gradually tilts outward while the inner surface of the clue bar 219 is in contact with the angle correcting member 231, and the angle formed by the axial direction of the clue bar 219 and the horizontal direction of the left and right of the top plate 11 gradually increases. To be larger (closer to 90 °). When the protruding pin 233 engages with the third gradient cam portion 230, the raising of the clue bar 219 stops and the lower end of the clasp bar 219 is moved to the lower side of the angular groove portion 55 via the protruding pin 233. It is fixed and the rotation stops. Then, by inserting the connecting pin 68 of the locking means 26 into the insertion hole 236 formed on the side surface of the clasp bar 219, the clasp bar 219 pulled out along the leg column 16 can be fixed to the guide 220. By performing such an operation on all the clue bars 219, each clasp bar 219 is held in the vertical state with respect to the horizontal directions of the left and right and front and rear of the top plate 11 with the clasp bars 219 extended to the uppermost position. Can do.

Next, the connecting brackets 221a of the step-off prevention guards 221 are put on the upper ends of the clue bars 219 that are paired on the left and right sides of the top plate 11, respectively. As a result, the upper end portion of the clasp bar 219 is inserted into the cylindrical body 122 of the connection fitting 221a, the projecting pin 224 is fitted into the hole 124, and both ends of the step-off prevention guard 221 are connected to the clasp stick 219 via the connection fitting 221a. It can be attached to the upper end of the.
Subsequently, the cylindrical member 243 of the attachment member 240 provided on both sides of the auxiliary guard 222 is formed on the connection plate 247 of the connection fitting 221a attached to the upper end portion of the clue bar 219 that is paired on both the front and rear sides of the top plate 11. The insertion hole 248 is inserted. At this time, the stopper 246 urged from the slit 242 of the cylindrical member 243 by the leaf spring 245 and pushed out from the peripheral surface of the insertion hole 248 is retracted into the cylindrical member 243, so that the cylindrical member 243 is inserted into the insertion hole. The stopper 246 that has passed through the insertion hole 248 can be protruded from the slit 242 again by the leaf spring 245, so that the cylindrical member 243 of the mounting member 240 is hooked on the connection fitting 221 a. . As a result, the auxiliary guard 222 can be provided on the upper end portion of the pair of clue bar 219 projecting on both the front and rear sides of the top plate 11 via the connection fitting 221 a of the anti-step-off guard 221.

As described above, the step-off prevention guard 221 and the auxiliary guard 222 can be provided around the top plate 11 via the clue bar 219, and it is possible to prevent the operator from stepping off the top plate 11 and falling down during the work. . When the operator gets off the top plate 11, the stopper 246 of one mounting member 240 provided on the auxiliary guard 222 is pushed into the cylindrical member 243 with a finger, for example, to release the latching of the mounting member 240. it can be withdrawn from the insertion hole 248 by tilting the other mounting member 240 side while lifting upward. And an opening part can be formed by rotating the other attachment member 240 to a fulcrum, and it can move to the support legs 12 and 13 from the top plate 11. FIG.

As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, The change in the range which does not change the summary of invention is possible, Each above-mentioned embodiment is possible. The case where the working scaffold of the present invention and the coupled scaffold using the same are combined with some or all of the forms and modifications are also included in the scope of the right of the present invention.
For example, in the work platform of the first embodiment and the connection platform of the first embodiment, the clue bar is provided on each of the support pillars on both sides of the top plate. It may be provided on each of the pedestals or on both ends on one side of the top plate. Although the two hook holes are provided at different positions in the axial direction on the clue bar, three or more hook holes may be provided. Thereby, the protrusion height of the clue bar from the top plate can be further adjusted according to the situation. Further, the step-off prevention guard and the auxiliary step-off prevention guard may be provided on one side of the top plate and the connecting scaffold member.

In addition, when the anti-stepping guard was attached to the mounting part, the anti-stepping guard was temporarily fixed so that the protruding pins protruded on both sides of the mounting part. A hole to be engaged may be provided so that the step-off prevention guard may be temporarily fixed.
In the work scaffolding platform of the second embodiment and the connection scaffolding platform of the second embodiment, the clue bar is provided on each of the supporting pillars on both sides of the top plate. Each of the supporting legs on both sides may be provided on one of the pillars, and the step-off prevention guard may be provided only on one side in the width direction of the top plate. In addition, the step-off prevention guard is detachably provided on the upper end of the clasp bar facing the longitudinal direction of the top plate via a connecting bracket. It may be fixed.

In the work platform according to the third embodiment, the first and second angle correction pins are provided, but only one of them may be provided. In the working scaffolds according to the fourth and fifth embodiments, the angle correction pin is provided only at the upper part of the guide. However, the angle correction pin may be provided at the center of the guide. In the working platform according to the fifth embodiment, the clue bar holding mechanism is provided on the upper part of the guide and the upper part of the clue bar, but the holding guide (made of metal or plastic) into which the lower part of the lowermost clue bar is fitted. May be provided at the bottom of the pedestal. In addition, in the work platform according to the third or fourth embodiment, a clue bar holding mechanism may be provided.

In the work platform according to the sixth embodiment, the anti-stepping guard, the middle beam member, and the skirting member are attached to the drawn clue bar, but depending on the length of the drawn clue bar, the middle beam member The attachment of the skirting member can also be selected according to the work content. In addition, in the work platform according to the sixth embodiment, a part of the angle adjustment mechanism that works in cooperation with the guide and the outer tube member can be provided, respectively, and further, the outer tube member A clue bar holding mechanism or a part thereof may be provided.

In the working scaffold according to the seventh embodiment, the angle correction mechanism used for the working scaffold according to the third embodiment is provided in the guide. However, the working scaffold according to the fourth embodiment is provided. An angle correction mechanism used for the table can also be provided. Moreover, you may make it not provide an angle correction mechanism like the guide used for the scaffold for work which concerns on 1st Embodiment. Furthermore, as a clue bar, a clue bar used in the work platform according to the sixth embodiment may be employed. An anti-step-off guard and an auxiliary guard are provided around the top plate, but attachment of the anti-step-off guard and the auxiliary guard can be arbitrarily selected according to the installation status of the work platform. Here, when attaching the auxiliary guard to the clasp bar not attached with the stepping prevention guard, for example, attach only the connecting bracket part of the stepping prevention guard to the upper end of the clasp bar and then attach the auxiliary guard. .
The cue rod for attaching the auxiliary guard is provided with the wedge member and the projecting pin that act together with the guide. However, either or both of the wedge member and the projecting pin may be provided.

It is a side view of the working scaffold based on the 1st Embodiment of this invention. It is a partially-omission front view of the work scaffold. (A) and (B) are a side view and a front view of a clue bar, respectively. It is a front view of a locking means. FIG. 5 is a cross-sectional view taken along the line PP in FIG. 4. (A), (B), and (C) are a plan view, a partially cutaway cross-sectional view, and a bottom view, respectively, in a locked state of the locking means. It is a notch sectional view in the lock release state of a locking means. (A) is a partially cutaway side cross-sectional view of the stepping prevention guard, and (B) is a cross-sectional view taken along the line Q-Q in FIG. 8 (A). It is a partially-omission front view which shows the state at the time of accommodation of a clue stick. It is a partially-omission front view which shows the state at the time of starting pulling out a clue bar. It is a partially-omission front view which shows the state which further pulled out the clue bar. It is a partially-omission front view which shows the state which made the cue stick stick to the bottom face of a guide and was made into the longest. It is a partially-omission front view which shows a state when a cue stick is stood perpendicularly | vertically with respect to the width direction of a top plate. It is a partially-omission front view which shows a state when the clue stick pulled out completely is locked. It is a side view which shows the work scaffold with the clue bar locked. It is a partially-omission front view of the working scaffold in a state where the clue bar is locked. It is a side view of the connection scaffolding which concerns on the 1st Embodiment of this invention. (A) is a side view of the working scaffold according to the second embodiment of the present invention, and (B) is a sectional view taken along line XX in FIG. 18 (A). It is a side view of the connection metal fitting used for the scaffold for the work. It is a top view of the connection metal fitting used for the scaffold for the said work seen from the Z direction of FIG. It is explanatory drawing which shows the state at the time of folding a support leg in the scaffold for the said work. It is explanatory drawing which shows the state at the time of opening a support leg in the same scaffold for work. It is explanatory drawing which shows the state at the time of pulling up one clue stick in the work scaffold. It is a side view of the connection scaffolding based on the 2nd Embodiment of this invention. (A), (B) is the side view and top view which show the state in which the auxiliary | assistant tread prevention guard used for the said connection scaffold stand was extended, respectively. (A), (B) is the side view and top view which show the state which the auxiliary | assistant step-off prevention guard used for the said connection scaffold stand contracted, respectively. (A) is a side view of the mounting bracket used for the connection scaffolding base, and (B) is a cross-sectional view taken along line YY in FIG. 27 (A). It is a top view of the attachment metal fitting used for the connection scaffolding platform seen from the U direction of FIG. It is a partially-omission front view which shows the state at the time of starting pulling out the clue bar of the work scaffolding base concerning the 3rd Embodiment of this invention. It is a partially-omission front view which shows the state at the time of the clue bar | burr of the work scaffolding stand having been pulled out completely. It is a partially-omission front view which shows the state at the time of starting pulling out the clue bar of the working scaffold base which concerns on the 4th Embodiment of this invention. It is a partially-omission front view which shows the state at the time of the clue bar | burr of the work scaffolding stand having been pulled out completely. It is a partially-omission front view which shows the state which accommodated the clue bar of the working scaffold based on the 5th Embodiment of this invention. It is a partially-omission front view which shows the state at the time of the clue bar | burr of the work scaffolding stand having been pulled out completely. It is a side view of the scaffold for work which concerns on the 6th Embodiment of this invention. (A) is a partially omitted front view showing a state in which the clue bar of the working scaffold base is the longest, and (B) is a cross-sectional view taken along line NN in FIG. 36 (A). (A) is a side view of the middle crosspiece member of the scaffolding for work, and (B) is a cross-sectional view taken along the line RR in FIG. 37 (A). (A) is a side view which shows the attachment state of the middle crosspiece member of the scaffold for work, (B) is MM sectional drawing of the arrow of FIG. 38 (A). (A) is a side view of the skirting board member of the scaffold for work, (B) is a ZZ cross-sectional view of FIG. 39 (A). It is explanatory drawing which shows the state at the time of opening a support leg in the same scaffold for work. It is explanatory drawing which shows a state when the clue stick | rod of the same work scaffold is pulled out completely. It is a partially-omitted side view which shows the state at the time of starting pulling out the clue bar of the work platform according to the seventh embodiment of the present invention. It is a partially-omission side view which shows the state at the time of the clue bar | burr of the same work scaffold being pulled out completely. It is a partially-omission front view at the time of attaching an auxiliary guard to the stepping prevention guard provided in the clue bar of the same work scaffold. It is a partially omitted side view when an auxiliary guard is attached to a step-off prevention guard provided on a clue bar of the same work platform. It is explanatory drawing of the scaffold for work which concerns on a prior art example. It is explanatory drawing of the scaffold for work which concerns on a prior art example. It is explanatory drawing of the scaffold for work which concerns on a prior art example.

10: scaffold for work, 11: top plate, 11a: hook hole, 12, 13: support leg, 14-17: pedestal, 18-21: guide, 22-25: clue bar, 26, 26a, 26b: Locking means, 27, 28: Step-off prevention guard, 29: Frame body, 30: Scaffolding plate, 31: Step bar, 32, 32a, 33, 33a: Folding connection mechanism, 34, 35: Fixing plate, 36, 36a, 37 , 37a: movable plate, 38, 39: pivot, 40: stopper metal, 41: side stopper for upper end, 42: set screw, 43: side stopper for lower end, 44: set screw, 45: stopper, 46: set screw 47: first engaging hole, 48: second engaging hole, 49: third engaging hole, 50: mounting portion, 51: rivet, 52: base, 53: hole, 54: mounting portion, 55: corner Groove, 56: Rivet, 57: Wearing part, 58: Bolt, 59: Nut, 59a: Rivet, 60, 61: Side, 62: Bottom, 63: Through hole, 64: Protruding part, 65: Collar part, 66: Lock body, 67: Dome part, 68: connecting pin, 69: operation part, 70: spring, 71: latching metal fitting, 72: insertion hole, 73: rivet, 74: insertion hole, 75: guard body, 76: side stopper, 77: ridge, 78 : Projecting pin, 79: tip, 80: base, 81: insertion hole, 82: spring, 83: through hole, 84: pin fixing member, 85: hole, 86: coupling scaffold base, 87: coupling scaffold member, 88 : Connection scaffolding plate, 89: Connection latching member, 90: Connecting tool, 91: Auxiliary step-off prevention guard, 92: Hole, 93: Work platform, 94-97: Cue rod, 98, 99: Step-off prevention guard, 100: Side stopper 101: Stopper base, 102, 102a: Connecting metal fitting, 103: Projection pin, 104: Pin tip, 105: Pin base, 106: Insertion hole, 107: Spring, 108: Through hole, 109: Hole, 110, 111 : Square pipe, 112: Side stopper, 113: Through hole, 114: Hole, 114b: Pipe, 115, 116: Side plate, 117: Connection plate, 118: Main body, 119, 120: Mounting plate, 121: Rivet, 122 : Cylinder, 123, 124: hole, 124a: washer, 125: pin, 126: coupling scaffolding base, 127: auxiliary stepping prevention guard, 128: guard body, 129: pin, 130, 130a: mounting bracket, 131, 132 : Square pipe, 133: Side stopper, 134: Through hole, 135: Hole, 136, 136a, 137, 137a: Side Plate, 138, 138a: connecting plate, 139, 140: hole, 141: work platform, 142: clue bar, 143: guide, 144: joint member, 145: fixing pin, 145a: protruding pin, 146: side stopper 147: Pipe, 148: Mounting pin, 149: Angle correction mechanism, 150: Wedge member, 151: Main body, 152: Projection, 153: Projection, 154: Stepped insertion hole, 155: Set screw, 156: Engagement Joint hole, 157: side stopper, 158: engagement protrusion, 159: first angle correction pin, 160: second angle correction pin, 161: working scaffold, 162: clue bar, 163: guide, 164: Angle correction mechanism, 165: Angle correction pin, 166: Gradient cam part, 167: Side stopper, 168: Projection pin, 169: Edge part, 170: Scaffolding platform for work, 71: Cue bar, 172: Guide, 173: Cue bar holding mechanism, 174: Second gradient cam part, 175: Joint member, 176: Second projecting pin, 177: Edge part, 178: Working scaffold base, 179 to 182: Cue stick, 183: Anti-step-off guard, 184: Middle rail member, 185: Skirting member, 186: Locking means, 187, 188: Folding connection mechanism, 189, 190: Movable plate, 191: Outer tube member 192: inner pipe member, 193: fixing means, 194: square pipe, 195: protruding pin, 196: side stopper, 197: tip, 198: base, 199: spring, 200: through hole, 201: square pipe, 202: Upper stopper, 203: Hook pin, 204: Hook portion, 205: Insertion hole, 206: Temporary fixing means, 208: Cross beam material, 209: Mounting portion, 2 0: contact material 211: connection means 212: insertion hole 214: baseboard body 215: second attachment portion 216: second contact material 217: second connection means 218: work Scaffolding base, 219: clue bar, 220: guide, 221: anti-step-off guard, 221a: coupling bracket, 222: auxiliary guard, 223: side stopper, 224: protruding pin, 225: front part, 226: base part, 227: Spring, 228: Through hole, 228a: Retaining prevention pin, 229: Second angle correction mechanism, 230: Third gradient cam part, 231: Angle correction member, 232: Side stopper, 233: Projection pin, 234: Insertion hole, 235: insertion hole, 236: insertion hole, 238: attachment portion, 239: handrail portion, 240: attachment member, 241: end plate with collar, 242: slit, 243 : Cylindrical material, 244: Pin, 245: Leaf spring, 246: Stopper, 247: Connection plate, 248: Insertion hole

Claims (7)

In a working scaffold with a ladder-like support leg that is disposed at both left and right ends in the longitudinal direction of the top plate via a folding connection mechanism, and that forms a pair of ladder-like support legs that expands and opens downward . ,
A clue bar that moves up and down along each pedestal of the support leg, and that is held at a lower position than the tip of the pedestal when stored, and a tip that protrudes above the top plate when used.
Engages in each clue rod projecting upward of the top plate, possess a locking means for holding the state of protruding the該手takes rod,
The upper end of each clasp bar is provided with a mounting portion having a hole through which one side of the stepping prevention guard is inserted, and both ends of the stepping prevention guard are protruded outwardly by an elastic member. A working scaffold comprising a pin and provided with a latching member that protrudes the projecting pin on both sides of each mounting portion to prevent the step-off prevention guard from falling off the mounting portion. Stand. 2. The work platform according to claim 1, wherein the clasp bar has a plurality of protruding positions of the clasp bar that the locking means engages at a plurality of positions in the vertical direction of the clasp bar and protrudes from the top plate. A working scaffold. 3. The work scaffold according to claim 1, wherein a guide is provided on each outer side of the pedestal, and the clue bar moves up and down along each guide. Scaffolding stand. 4. The work scaffold according to claim 3, wherein the clasp bar has a rectangular cross section, and the guide has a square groove portion through which the clasp bar is inserted. 5. The work scaffold according to claim 4, wherein the locking means has a rod that can be fitted into a hooking hole provided at a predetermined position of the clasp bar, and an operating portion for moving the rod back and forth is attached to the guide. A working scaffold. The work platform platform according to any one of claims 1 to 5 a connecting scaffold platform connected in series, the work platform base of the top plate adjacent has a connecting latch member to both sides A connection scaffolding platform characterized in that it is connected by a connection scaffold member and is connected by an auxiliary anti-step-off prevention guard whose both ends are inserted into a connection tool provided at an end portion of the above-mentioned opposite anti-step-off prevention guard. The connection scaffold base according to claim 6 , wherein the step-off prevention guard and the auxiliary step-off prevention guard are provided on one side or both sides of the top plate and the connection scaffold member.

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