JP7274334B2 - Lifting device for foldable temporary scaffolding and lifting method thereof - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Act (1) "Concept Scaffolding IT-50 Future of Scaffolding" distributed at "Maintenance Resilience TOKYO 2018" held from July 18 to 20, 2018 and "Maintenance Resilience TOKYO 2018 Result Report" (2) "Iq Express VOL.10" published on August 23, 2018

The present invention relates to a hoisting device and a hoisting method for lifting and deploying a collapsible temporary scaffold that includes at least two pillars that can be folded and unfolded. It can be used as a folding temporary scaffold used at various work sites such as demolition sites, civil engineering work sites, and painting work sites.

Patent Literature 1 below discloses a folding temporary scaffold that includes at least two pillars that can be folded and unfolded. In this foldable temporary scaffolding constructed using construction frames, the pillars, which are the constituent members of each of the two construction frames arranged vertically at the work site, are deployed at the work site. The two pillars are arranged in series in the vertical direction, and the vicinity of the ends in the length direction of these pillars is in the axial direction perpendicular to the length direction of the two pillars. The two columns are freely foldable and unfoldable by being rotatably connected about the pin-shaped member.

In addition, Patent Document 1 discloses a lifting member that is arranged above the upper support that is the upper side when deployed among the at least two supports described above and that is operated to be raised, and the lifting member and the upper side. A hoisting device comprising a hoisting member for connecting a pillar and a bridging member that spans between an upper pillar and causes the upper pillar to be in a state of being suspended from the hoisting member. As the lifting member rises, the upper pillar rises via the bridging member, and the folding temporary scaffold is deployed.

JP-A-9-310480

In the above foldable temporary scaffolding, when the lifting member is lifted to raise the upper pillar through the bridging member and the folding temporary scaffold is deployed, the upper pillar is positioned below one of the two pillars. Since the side struts are rotatably connected to the pin-shaped members whose axial direction is perpendicular to the length direction of these struts, the upper struts are vertically aligned around the pin-shaped members. It will rotate inside. Therefore, when deploying the folding temporary scaffolding by raising the lifting member, it is required to perform the lifting operation in consideration of such behavior of the upper support.

An object of the present invention is to provide a folding temporary scaffolding that can be deployed by raising a lifting member, taking into consideration that the upper support column rotates in a vertical plane around a pin-shaped member. to provide lifting equipment for

The lifting device for folding temporary scaffolding according to the present invention includes at least two pillars that are arranged in series in the vertical direction when unfolded, and the vicinity of the ends of these pillars A folding temporary scaffold in which the two posts are freely foldable and unfoldable by being rotatably connected by a pin-shaped member whose axial direction is perpendicular to the length direction of the posts. A lifting device for lifting a hoisting device, comprising: a lifting member disposed above an upper pillar of the two pillars, which is positioned on the upper side when unfolded; A folding structure comprising: the lifting member for connecting with the upper strut; In the lifting device for a temporary scaffolding, the lifting member has a pin-like structure that changes the position of the lifting member when the two pillars that have been folded by the lifting of the lifting member are unfolded and the upper pillar is raised. A control member is connected to the member for controlling movement in a horizontal direction included in a vertical plane in which the upper column rotates about the member.

As described above, in the folding-type temporary scaffolding lifting device according to the present invention, the lifting member is positioned so that the lifting member is positioned when the two columns that have been folded are unfolded by the lifting of the lifting member and the upper column stands up. is connected to a control member for controlling movement in the horizontal direction included in the vertical plane in which the upper column rotates about the pin-shaped member, so that the upper column rotates about the pin-shaped member When moved, the horizontal position of the lifting member can be controlled by the control member to properly adjust the horizontal position of the lifting member in response to the movement of the upper strut about the pin member. As a result, the foldable temporary scaffold can be properly deployed by raising the lifting member.

In the folding-type temporary scaffold lifting device according to the present invention, the number of control members connected to the lifting member may be one, but the control members are arranged so that the positions of the lifting members are opposite to each other in the horizontal direction. Preferably, two lifting members are connected to control movement in two directions.

According to this configuration, the two control members can more easily and reliably control the movement of the lifting member in two directions opposite to each other in the horizontal direction.

Also, such a control member may be a bar-shaped member or a flexible cord-shaped member.

If the control member is a flexible cord-like member, even if the cord-like member is long, it can be kept in a wound state when it is not in use, making it easy to handle. can be done

In the case where the control member is a string-like member having flexibility, the string-like member controls the horizontal position of the lifting member, and the lifting member is lifted according to the behavior of the upper strut around the pin-like member. In order to properly adjust the horizontal position of the member, the string is pulled from the reel by actuating a control device which includes a reel for unreeling the string. It may be paid out or wound on a reel, or a string-like member may be operated by an operator, and the worker may operate the string-like member to control the horizontal position of the lifting member. The horizontal position of the lifting member may be appropriately adjusted according to the behavior of the upper strut around the pin member.

If the string member is operated by the operator as in the latter case, the overall structure of the hoisting device according to the present invention can be configured as a simple structure with a small number of parts.

Further, in the present invention described above, when a plurality of pillar rows formed by the two pillars are provided at intervals in the horizontal direction, the upper pillars in each row of the pillars are horizontally long. Each upper strut is connected to the lifting member having a length by the bridging member provided for each upper strut. As a result, the lifting member rises, thereby raising the upper pillars of the respective pillar rows.

In addition, the horizontal direction is the longitudinal direction of the folding temporary scaffold, and a plurality of column rows formed by the two columns are provided at intervals in the width direction of the horizontal direction orthogonal to the longitudinal direction. In some cases, the upper pillars in these pillar rows are connected to the lifting member having the length in the width direction by the bridging member provided for each upper pillar. As a result, the upper pillars in each row of pillars, which are provided at intervals in the width direction, can be raised by lifting the lifting member.

In this way, the horizontal direction is the longitudinal direction of the folding temporary scaffold, and the columns formed by the two columns are spaced apart in the width direction in the horizontal direction perpendicular to the longitudinal direction. In the case where a plurality of upper struts in the row of struts are connected to the lifting member having the length in the width direction by the bridging member provided for each upper strut, the control member can be lifted It is preferable that the member is connected to the lifting member at the central portion or approximately the central portion of the widthwise length of the member.

According to this, since the control member is connected to the lifting member at the central portion or approximately the central portion of the length of the lifting member in the width direction, the horizontal position of the lifting member is controlled by the control member, and the pin-shaped lifting member is connected to the lifting member. Adjusting the horizontal position of the hoisting member according to the behavior of the upper pillar centered on the member is carried out equally or substantially evenly for the plurality of columns of pillars that are spaced apart in the width direction. become able to.

In the present invention described above, if the at least two pillars, which are arranged in series in the vertical direction by being deployed, are members constituting the folding temporary scaffolding, the folding temporary scaffolding It may be an independent post that is not pre-joined by welding, bolts, etc. before assembling the folding temporary scaffold with other members that make up the Like the pillars that make up the part, the pillars that are already connected by welding, bolts, etc. to other members that make up the folding temporary scaffolding before assembling the folding temporary scaffolding may also be used. It can also be applied to folding temporary scaffolds used.

In addition, the folding temporary scaffold according to the present invention described above can be used at various work sites including building construction sites, demolition sites, civil engineering work sites, and painting work sites.

According to the present invention, it is possible to deploy the foldable temporary scaffolding by raising the lifting member, considering that the upper strut rotates about the pin member in the vertical plane. .

FIG. 1 is a perspective view showing a foldable temporary scaffold according to the present invention when the foldable temporary scaffold is deployed. FIG. 2 shows a first support that constitutes a folding temporary scaffold, (A) is a plan view, (B) is a front view, and (C) is a bottom view. FIG. 3 shows the lock means provided on the first support, where (A) is a plan sectional view of the first support and (B) is a front view of the lock means. FIG. 4 is a view of the lock member of the lock means as seen from the inside of the first support. FIG. 5 is a sectional view taken along line S5-S5 of FIG. FIG. 6 shows the locking means when the operating portion of the locking member is pulled, FIG. 6(A) being a plan cross-sectional view of the first column, and FIG. 6(B) being a front view of the locking means. FIG. 7 is an enlarged view showing one longitudinal end of the first strut. FIG. 8 shows a second support column that constitutes a folding temporary scaffolding, (A) is a plan view, (B) is a front view, and (C) is a bottom view. FIG. 9 is an enlarged view showing both ends of the second strut in the length direction with part of the second strut omitted. FIG. 10 is a diagram showing a state in which the first strut and the second strut are connected in a folded state. FIG. 11 is a diagram showing a state in which the second strut is rotated relative to the first strut from the state shown in FIG. 10 and deployed. FIG. 12 shows an operation in which the longitudinal end of the first strut is inserted into the longitudinal end of the second strut from the state shown in FIG. It is the figure shown in order of B) and (C). FIG. 13 is a diagram showing the entirety of the first support column and the second support column when they are in series in the vertical direction. FIG. 14 is a diagram showing a state where two second struts are connected in a folded state. FIG. 15 is a diagram showing a state in which one of the two second pillars is rotated and deployed with respect to the other second pillar from the state of FIG. 14 . FIG. 16 shows an operation in which the lengthwise end of one of the second struts is inserted into the lengthwise end of one of the second struts from the state of FIG. It is the figure shown in order of (A), (B), and (C). FIG. 17 is a diagram showing the entirety of the two second struts when they are in series in the vertical direction. FIG. 18 is a view showing a horizontal member used in the folding temporary scaffolding of FIG. 1; FIG. 19 shows a working cloth board used in the folding temporary scaffolding of FIG. 1, (A) being a plan view and (B) being a front view. 20 is a front view showing a composite made up of horizontal members and brace members used in the folding temporary scaffolding of FIG. 1. FIG. FIG. 21 is a diagram showing a column of pillars composed of one first pillar and two second pillars formed by connecting these pillars in a folded state. Fig. 22 shows the folding temporary scaffolding of Fig. 1 assembled in a folded state by a plurality of column rows, horizontal members and work cloth plates, except for the composites shown in Figs. 1 and 20. It is a front view showing time. 23 is a side view of the temporary scaffolding shown in FIG. 22 in a folded state; FIG. FIG. 24 is a front view showing the start of the work for lifting the temporary scaffold in the folded state shown in FIGS. 25 is a side view showing the temporary scaffolding in the folded state of FIG. 24. FIG. FIG. 26 shows the lifting member shown in FIGS. 25 and 26, where (A) is a plan view and (B) is a front view. FIG. 27 is a front view showing when the top floor of the folding temporary scaffolding is raised by the lifting work by the lifting device. FIG. 28 is a front view showing the baseboard, the composite, and the horizontal member attached to the top story after the lifting work of FIG. 27 . FIG. 29 is a front view showing the middle floor of the foldable temporary scaffolding raised by the lifting operation using the lifting device. 30 is a front view showing the baseboard, the composite and the horizontal member attached to the middle story after the lifting work of FIG. 29. FIG. FIG. 31 is a front view showing when the lowest floor of the folding temporary scaffold is raised by further lifting work by the lifting device. FIG. 32 is a front view showing the baseboard, the composite, and the horizontal member attached to the lowest story after the lifting work of FIG. 31 . FIG. 33 is a front view showing the work of placing the folding temporary scaffold unfolded to the lowest floor on the base body . 34 shows the base body of FIG. 33, (A) is a front view, and (B) is a side view. FIG. 35 shows a jack base which is a member constituting the base body , (A) is a front view, and (B) is a side view. FIG. 36 shows a base body strut that is a member constituting the base body, (A) is a plan view, (B) is a front view, and (C) is a bottom view. FIG. 37 is a perspective view showing the work of arranging a plurality of jack bases at predetermined positions on the work site in order to assemble the base body on the work site. FIG. 38 is a perspective view showing a state in which the support for the base body is inserted and erected on the upper part of each jack base after the work of FIG. 37. FIG. FIG. 39 is a front view showing a state after the folding temporary scaffold that has been deployed to the lowest floor has been installed on the base body .

A mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 shows an entire perspective view of a foldable temporary scaffolding 1 according to an embodiment of the present invention. The columns 10 are formed by arranging the columns in series in the vertical direction. B, there are four in the longitudinal direction A of the folding temporary scaffolding 1 and two in the width direction B perpendicular to the longitudinal direction A. In addition, since the foldable temporary scaffolding 1 shown in FIG. 1 is a three-story building consisting of one floor, which is the lowest floor, two floors, which are middle floors, and three floors, which are the highest floor. Of the column rows 10 each of which is arranged two by two in the width direction B, the two column columns 10 arranged at both ends in the longitudinal direction A have three upper and lower horizontal members 3 for each floor. However, except for the two column rows 10 that are bridged in order to increase the strength in the width direction B of the folding temporary scaffolding 1 and are arranged at both ends in the longitudinal direction A, there are two columns in the width direction B. A horizontal member 3 is also bridged over the generally arranged column row 10 at the same height position as the lowest horizontal member 3 among the three horizontal members 3 .

Of these horizontal members 3, two horizontal members 3 adjacent to each other in the longitudinal direction A are hung with working cloth plates 4 on which workers can ride or walk for work. Three work cloth boards 4 are arranged in the longitudinal direction A and two in the width direction B for each floor of the folding temporary scaffold 1. there is

Two columns 10 adjacent to each other in the longitudinal direction A have a composite body 7 composed of one horizontal member 5 and two brace members 6 arranged crosswise in an X shape. This composite body 7, which is bridged to increase the strength in the longitudinal direction A of the folding temporary scaffolding 1, and also serves as a handrail for the worker standing on the work cloth board 4, is the folding temporary scaffolding 1. are arranged on both sides in the width direction B of the folding temporary scaffolding 1 for each layer.

When the folding temporary scaffolding 1 according to this embodiment is installed at a work site such as a construction site, the baseboard 8 shown in FIGS. 33 and 39 is attached to the folding temporary scaffolding 1. However, FIG. 1 shows the foldable temporary scaffolding 1 with the skirting board 8 omitted.

Each row of columns 10 shown in FIG. 1 is composed of one first column 11 shown in FIG. 2 and two second columns 12 shown in FIG. , (A), (B), and (C) in these FIGS. 2 and 8 are a plan view, a front view, and a bottom view. The first strut 11 in FIG. 2 will be described. The first strut 11 is connected to a main body 13 formed of a round pipe material and to one end in the length direction of the main body 13, and is positioned outside the main body 13. It comprises a connecting member 14 with a small diameter and four flanges 15 which are joined to the outer periphery of the main body 13 at equal intervals in the longitudinal direction. These plate-like flanges 15, which are joint members for the horizontal member 3, the composite 7, etc., which are connected to the first strut 11, have the length of the first strut 11. 15 A of long-hole-shaped opening parts penetrated in the direction are formed in the circumference direction of the 1st support|pillar 11 at 90 degree intervals.

The main body 13 of the first post 11 is provided with locking means 16 at or near the end opposite to the side where the connecting member 14 is provided. This locking means 16 is shown in FIG. 3, where FIG. 3(A) shows the locking means 16 by means of a plan sectional view of the main body 13 of the first post 11, and FIG. A front view of means 16 is shown. The locking means 16 has two legs 17B extending toward the main body 13 from both ends of the flat base 17A in the diametrical direction of the main body 13. and a pin-shaped base member 17 whose longitudinal direction is the diametrical direction of the main body 13 and which is disposed between two legs 17B so as to be slidable in the diametrical direction of the main body 13. A rear end portion of the lock member 18 protrudes outside the base member 17 through a hole formed in a base portion 17A of the base member 17. As shown in FIG. In addition, since the elastic force of the coil spring 20 arranged between the spring bearing member 19 attached to the lock member 18 and the base portion 17A of the base member 17 always acts on the lock member 18, the lock member 18 is is always elastically urged toward the inside of the first post 11 by the elastic force of the coil spring 20, which is an elastic member. 11 protrudes into the body 13 through a hole formed in the body 13 . The tip portion 18A serves as a locking portion of the lock member 18, as will be understood from the description below.

FIG. 4 shows a view of the tip portion 18A of the lock member 18 viewed from inside the main body 13 of the first support 11, and FIG. 5 shows a sectional view taken along line S5-S5 of FIG. A tip portion 18A of the lock member 18 protruding into the main body 13 through a hole 13A formed in the main body 13 is formed by cutting a part of the tip surface 18B of the lock member 18 obliquely. The inclined surface 21 extends in the lengthwise direction of the lock member 18 from the tip end surface 18B, and the lock means 16 is arranged at both ends of the main body 13 in the lengthwise direction. It is slanted toward the opening at the side end.

As shown in FIG. 3A, a lock member 18 is attached to the rear end of the lock member 18 protruding outside the base member 17 through the hole formed in the base portion 17A of the base member 17. An operating portion 22 that can be pulled by the operator against the elastic force of the coil spring 20 is provided. The operating portion 22 is formed of a plate material that is welded or the like to the rear end portion of the lock member 18, and is arranged to be exposed to the outside of the main body 13 of the first post 11, as shown in FIG. 3(B). As shown, the base portion 22A has a width dimension protruding from the base member 17 in the diametrical direction of the main body 13, and the width dimension is smaller than that of the base portion 22A at both longitudinal ends of the main body 13 at the base portion 22A. and two projecting portions 22B formed by bending toward the main body 13 so as to protrude toward the main body 13, and the end portions of the projecting portions 22B on opposite sides in the diametrical direction of the main body 13, and further on the main body 13 side. It has two tongue pieces 22C formed so as to protrude outward.

In FIG. 6, the operator pulls the operating portion 22 against the elastic force of the coil spring 20 and moves the operating portion 22 leftward from FIG. 6(A) and 6(B) show the operating portion 22 corresponding to FIGS. 3(A) and 3(B) when this work is performed. state is shown. When an operator pulls the operating portion 22 against the elastic force of the coil spring 20, all or substantially all of the front portion 18A of the lock member 18 having the inclined surface 21 is pulled out of the main body 13. Also, when the operator rotates the operating portion 22 to an angle of nearly 90 degrees around the locking member 18 and releases the operating portion 22 , the protruding portion 22B of the operating portion 22 moves toward the flat surface of the base member 17 . The tongue portion 22C of the operation portion 22 abuts on the end face of the base portion 17A of the base member 17 in the longitudinal direction of the main body 13. As shown in FIG. As a result, further rotation of the operation portion 22 about the lock member 18 is restricted, and all or substantially all of the tip portion 18A of the lock member 18 on which the inclined surface 21 is formed is removed from the inside of the main body 13. The state of exiting to the outside is maintained.

Further, when the operator pulls the operating part 22 and rotates it to the opposite side of the lock member 18 by an angle of nearly 90 degrees, and then releases the operating part 22, the operator can operate the operating part 22. The locking member 18 including the portion 22 slides toward the inside of the main body 13 by the elastic force of the coil spring 20, which is an elastic member, so that the locking member 18 returns to the state shown in FIG. A tip portion 18</b>A of the lock member 18 , which is formed with an inclined surface 21 and serves as the locking portion described above, protrudes inside the main body 13 .

FIG. 7 shows an enlarged view of the connecting member 14 provided at one of the longitudinal ends of the main body 13 of the first support 11 shown in FIG. The connecting member 14 forming one end in the length direction of the first support 11 has a recess that is recessed from the outer surface of the connecting member 14 toward the inside, or a recess that is recessed from the outer surface of the connecting member 14 to the inside. A to-be-engaged portion 23 is formed by a hole that opens toward it. In addition, the tip portion of the connecting member 14 is formed by swaging a short pipe material, which is the material of the tip portion, so that the surface 14A, which is the same as a part of the spherical surface, is the circle of the first strut 11. It is formed continuously over the entire circumference in the circumferential direction.

As shown in FIG. 7, of the longitudinal ends of the main body 13 of the first post 11, the end provided with the connecting member 14 has a second support including the connecting member 14, in other words. A connecting arm 24 is attached by welding in the vicinity of the end formed by the connecting member 14 of both ends of the one post 11 in the length direction. The connecting arm 24 formed of a plate extends in a direction forming an angle with the length direction of the first support 11 and perpendicularly to the main body 13 , and one end thereof is connected to the first support 11 . and an extension portion 24B extending from the other end of the base portion 24A with a component extending in the length direction of the first support column 11. The projecting portion 24B extends from the other end of the base portion 24A toward the connecting member 14 in parallel with the first support 11 . A circular hole 25 is provided at the tip of the extending portion 24B.

Next, the second strut 12 shown in FIG. 8 will be described. The second strut 12 is connected to a main body 26 formed of a round pipe material having the same diameter and length as the main body 13 of the first strut 11, and one end of the main body 26 in the longitudinal direction, A connecting member 27 having an outer diameter smaller than that of the main body 26, and four connecting members 27 connected to the outer peripheral portion of the main body 26 in the longitudinal direction at the same intervals as the flanges 15 of the first strut 11. These flanges 15 provided on the second column 12 are the same as the flanges 15 of the first column 11, so they are connected to the second column 12. These plate-shaped flanges 15 have elongated hole-shaped holes penetrating in the longitudinal direction of the second struts 12. are formed at intervals of 90 degrees in the circumferential direction of the second strut 12 .

In addition, locking means 16 is arranged at or in the vicinity of the end on the side opposite to the side on which the connecting member 27 is provided, among both ends in the length direction of the main body 26 of the second strut, Since this locking means 16 is made up of the same members and the same structure as those of the locking means 16 provided on the first support 11, this locking means 16 on the second support 12 is also provided on the second support. As can be seen from FIG. 9, which is an enlarged view showing both longitudinal ends of the post 12 with a portion of the main body 26 omitted, the pin is slidable in the diametrical direction of the second post 12. shaped lock member 18, a spring receiving member attached to the lock member 18, and the base member 17, and is arranged as an elastic member to always elastically bias the lock member 18 toward the inside of the second column 12. and a coil spring. Due to the elastic force of this coil spring, an inclined surface 21 is formed on the tip portion 18A that normally protrudes inside the main body 26 of the second strut 12 and serves as the engaging portion of the lock member 18. Further, at the rear end of the lock member 18, an operation portion 22 for pulling the lock member 18 against the elastic force of the coil spring is provided so as to be exposed to the outside of the second strut 12. .

In addition, in the lock means 16 provided on the second strut 12, the inclined surface 21 provided on the front end portion 18A of the lock member 18 extends in the longitudinal direction of the lock member 18 from the front end surface 18B of the lock member 18. As it extends, it inclines in a direction approaching the opening at the end of the main body 26 of the second support 12 on the side opposite to the side on which the connecting member 27 is provided.

As shown in FIG. 9, the connecting member 27 provided on the second support 12 is recessed inward from the outer surface of the connecting member 27 in the same manner as the connecting member 14 of the first support 11 . A recessed portion or a locked portion 28 is formed by a hole opening from the outer surface of the connecting member 27 toward the inside. In addition, the tip portion of the connecting member 27 is formed by swaging a short pipe material, which is the material of the tip portion, so that the surface 27A, which is the same as a part of the spherical surface, becomes the circle of the second strut 12. It is formed continuously over the entire circumference in the circumferential direction.

Further, as shown in FIG. 9, a first connecting arm 29 and a second connecting arm 29 each formed of a plate material are provided at or near both ends in the length direction of the main body 26 of the second strut 12 . The connecting arms 31 are welded to the second struts 12 at diametrically opposite locations. The first connecting arm 29 attached to the end on the side where the locking means 16 is arranged or in the vicinity of this end of both ends in the length direction of the second strut 12 including the connecting member 27 oriented at an angle to the length of the post 12 and extending in a direction perpendicular to the main body 26 such that one end of the second post 12 extends further along the length of the second post 12 than the locking means 16; A base portion 29A joined at a position near the center and an extension portion 29B extending from the other end of the base portion 29A with a component extending in the longitudinal direction of the second strut 12. The extending portion 29B extends from the other end portion of the base portion 29A toward the lock means 16 in parallel with the second support column 12. As shown in FIG. A hole 30 that is elongated in the longitudinal direction of the second strut 12 is provided at the tip of the extending portion 24B.

The second connecting arm 31 attached to the end on the side where the connecting member 27 is arranged or in the vicinity of this end of both ends in the length direction of the second strut 12 including the connecting member 27 It extends in a direction forming an angle with the length direction of the strut 12 and perpendicular to the main body 26 , and one end of the second strut 12 extends in the longitudinal direction of the second strut 12 rather than the connecting member 27 . It comprises a base portion 31A joined at a position close to the central portion, and an extension portion 31B extending from the other end portion of the base portion 31A with a component extending in the longitudinal direction of the second support column 12. The extending portion 31B extends from the other end portion of the base portion 31A toward the connecting member 27 in parallel with the second support column 12 . A circular hole 32 is provided at the tip of the extending portion 29B.

FIG. 10 shows the first strut 11 and the second strut 12 described above connected in a folded state to form part of the strut row 10 of FIG. , with the connecting arm 24 of the first strut 11 and the first connecting arm 29 of the second strut 12, these connecting arms partially overlapping the first strut 11 and the second strut 12 in the diametrical direction. By inserting pin-like members 33 into holes 25 and 30 provided in 24 and 29, the first column 11 and the second column are connected. The pin-shaped member 33 that connects the vicinity of the ends of both the struts 11 and 12 has an axial direction perpendicular to the length direction of the struts 11 and 12. The struts 11 and 12 can be folded and unfolded around the pin-shaped member 33 . FIG. 10 shows a state in which the first strut 11 and the second strut 12 are folded around the pin-shaped member 33 and connected. The pin-shaped member 33 is, for example, a bolt having a shaft portion inserted into the holes 25 and 30 and a nut screwed to the end portion of the shaft portion projecting from the holes 25 and 30 of the bolt. .

FIG. 11 shows the second strut 12 being deployed by rotating upward about the pin-shaped member 33 with respect to the first strut 11, and the first strut 11 and the second strut after this. The state of the strut 12 is shown in FIGS. 12(A), 12(B) and 12(C). As can be seen from these FIGS. 12A, 12B, and 12C, when the second support 12 is in series with the first support 11, it is provided at the longitudinal end of the first support 11. The connecting member 14 is fitted inside the longitudinal end of the main body 26 of the second strut 12, which is formed of round pipe material. For this reason, the connecting member 14 serves as an end member provided at the longitudinal end of the first strut 11 so as to fit inside the longitudinal end of the main body 26 of the second strut 12 . ing.

In the present embodiment, the tip of the locking member 18 of the locking means 16 arranged on the second strut 12 is inserted in the middle of the connecting member 14 being inserted into the lengthwise end of the main body 26 of the second strut 12 . The inclined surface 21 formed on 18A abuts the aforementioned surface 14A which is formed on the connecting member 14 so as to be the same as a portion of the spherical surface, so that the locking member 18 is aligned with these inclined surfaces 21 and the surface. Due to the guiding action of 14A, it once retreats against the elastic force of the aforementioned coil spring. After that, when the connecting member 14 of the first strut 11 is fitted into the lengthwise end of the main body 26 of the second strut 12, the elastic force of the coil spring is reduced as shown in FIG. 12(C). The front end portion 18A of the lock member 18 advanced by the biasing force is engaged with the above-described locked portion 23 provided on the connecting member 14 by the front end portion 18A serving as the locking portion of the lock member 18 .

As a result, as shown in FIG. 13, the first support 11 and the second support 12 are in an unfolded state in which the first support 11 and the second support 12 are arranged in series in the vertical direction. The tip portion 18A of the locking member 18 of the locking means 16 arranged on the second support 12 is engaged with the part 23 as a locking part, so that the first support 11 and the second support 12 are connected to each other by the locking means 16. It will be in a locked state in which it is prevented from coming off by the locking action of the

In addition, as described above, the first strut 11 and the second strut 12 are in a locked state in which the first strut 11 and the second strut 12 are locked by the locking action of the locking means 16. In the course of fitting into the interior of the ends of the main body 26 of the two posts 12 in the length direction, the inclined surface 21 of the lock member 18 abuts against the surface 14A of the connecting member 14, so that the lock member 18 exerts the elastic force of a coil spring. After that, the tip portion 18A of the locking member 18 moved forward by the elastic biasing force of the coil spring engages with the engaged portion 23 of the connecting member 14 as an engaging portion. Therefore, it is possible to automatically lock the two struts 11 and 12, which are deployed in series, in order to prevent them from slipping out, without depending on the operator during the deployment work.

Further, the hole 30 provided for inserting the pin-shaped member 33 into the first connecting arm 29 of the second support 12 is an elongated hole elongated in the longitudinal direction of the second support 12 as described with reference to FIG. Therefore, the upward rotation of the second strut 12 with respect to the first strut 11 about the pin-shaped member 33 is performed by lifting the second strut 12. As shown in (A) and (B), the pin-shaped member 33 is positioned at the lower end of the elongated hole 30 whose longitudinal direction is the vertical direction. The distance between the first support 11 and the second support 12 increases accordingly. Therefore, the second strut 12 rotates upward about the pin-shaped member 33 with respect to the first strut 11 , and the first strut 11 is positioned inside the longitudinal end of the main body 26 of the second strut 12 . The operation of inserting the connecting member 14 can be performed smoothly without the lengthwise end of the main body 26 of the second strut 12 being caught on the surface 14A of the connecting member 14 . After that, the second strut 12 is lowered by the length of the long hole 30, so that the connection member 14 of the first strut 11 is completely inserted into the lengthwise end of the main body 26 of the second strut 12. Therefore, as described above, the locking member 18 is advanced by the elastic biasing force of the coil spring, and the tip portion 18A of the locking member 18 is engaged with the locked portion 23 of the connecting member 14 as the locking portion. can be locked.

Furthermore, since the surface 14A of the connecting member 14 is the same as a part of the spherical surface as described above, the connection of the first strut 11 to the inside of the longitudinal end of the main body 26 of the second strut 12 is prevented. The operation of inserting the member 14 can be performed more reliably by the guiding action of the surface 14A.

Further, the surface 14A of the connecting member 14, which is the same as part of the spherical surface, is formed continuously over the entire circumference in the circumferential direction of the first strut 11, as described above. Therefore, regardless of the position of the pin-shaped member 33 in the circumferential direction of the first support 11 and the second support 12, in other words, the connection arm 24 of the first support 11 is connected to the first support. Body 26 of second strut 12 is positioned at any circumferential position of second strut 11 and at any circumferential position of first connecting arm 29 of second strut 12 . The operation of fitting the connecting member 14 of the first strut 11 into the interior of the end in the length direction of the can be reliably performed. That is, the connecting arm 24 can be attached to any position in the circumferential direction of the first support 11 , and the first connecting arm 29 can also be attached to any position in the circumferential direction of the second support 12 .

Further, when the above-described operation portion 22 provided on the lock member 18 and exposed to the outside of the second strut 12 is pulled, the lock member 18 is retracted against the elastic force of the coil spring, and the lock member 18 disengages from the engaged portion 23 of the connecting member 14, the first strut 11 and the second strut 12 are locked and the connected state in which they are prevented from coming off is released. When the struts 11 and 12 are in series in the vertical direction, at least a part of the operating portion 22 is connected to the connecting arm attached to the first strut 11 as shown in FIG. 12(C). 24 and the first connecting arm 29 attached to the second strut 12 . and the second strut 12 are effectively prevented from being released from the connected state in which they are locked and retained.

To explain this in detail, the connecting arm 24 attached to the first support 11 has an L-shape composed of the base 24A and the extension 24B as described above, and is attached to the first support 11. As described above, the first connecting arm 29 also has an L-shape formed by the base portion 29A and the extension portion 29B, so that at least part of the operation portion 22 is shown in FIG. 12(C). Thus, in the diametrical direction of these struts 11 and 12, they are arranged between the second strut 12 and the extending portion 24B of the connecting arm 24 and the extending portion 29B of the first connecting arm 29, In addition, at least a portion of the operating portion 22 is arranged between the base portion 24A of the connecting arm 24 and the base portion 29A of the first connecting arm 29 in the longitudinal direction of the first support 11 and the second support 12. become. For this reason, these connecting arms 24 and 29 prevent an unexpected external force or the like from acting on the operating portion 22, thereby maintaining a connected state in which the first strut 11 and the second strut 12 are locked and prevented from coming off. Cancellation can be effectively prevented.

FIG. 14 shows two second struts 12, namely two second struts 12A and a second strut 12B, connected in a folded state to form part of the strut row 10 of FIG. The time is shown. This connection is performed using the first connecting arm 29 of one of the two second columns 12A and 12B and the second connecting arm 31 of the other second column 12B. By inserting a pin-shaped member 34 similar to the pin-shaped member 33 shown in FIG. ing. The pin-shaped member 34 connecting the vicinity of the ends of both the second struts 12A and 12B has an axial direction perpendicular to the length direction of the second struts 12A and 12B. Therefore, the second struts 12A and 12B can be folded and unfolded around the pin-shaped member 34. As shown in FIG. In FIG. 14, the two second struts 12A and 12B are shown folded around the pin-shaped member 34 and connected.

In FIG. 15, one of the two second struts 12A and 12B is deployed by rotating upward about the pin-shaped member 34 with respect to the other second strut 12B. 16(A), 16(B) and 16(C) show the state of the two second pillars 12A and 12B after this. As can be seen from FIGS. 16A, 16B, and 16C, these two second struts 12A and 12B are also in a series state when the second strut 12A is in series with the second strut 12B. A connecting member 27 provided at the longitudinal end of the second column 12B is fitted inside the longitudinal end of the main body 26 of the second column 12A, which is formed of a round pipe material. For this reason, the connecting member 27 serves as an end member forming the longitudinal end of the second strut 12B so as to fit inside the longitudinal end of the main body 26 of the second strut 12A. there is

Also for these two second struts 12A and 12B, the inclined surface 21 formed on the locking member 18 of the locking means 16 arranged on the second strut 12A is in contact with the connecting member 27 during the fitting process. Since the lock member 18 abuts on the surface 27A which is formed to be the same as a part of the spherical surface, the lock member 18 resists the elastic force of the coil spring due to the guiding action of the inclined surface 21 and the surface 27A. and retreat once. Then, after that, when the connecting member 27 of the second support 12B is fitted inside the lengthwise end of the main body 26 of the second support 12A, as shown in FIG. The front end portion 18A of the lock member 18 advanced by the elastic biasing force of , is locked to the above-described locked portion 28 provided in the connecting member 27 by the front end portion 18A serving as the locking portion of the lock member 18. do.

As a result, as shown in FIG. 17, the two second columns 12A and 12B are also in an unfolded state in which they are arranged in series in the vertical direction. The two second struts 12A and 12B are locked by locking the tip portion 18A of the locking member 18 of the locking means 16 provided on the second strut 12A to the locking portion 28 as a locking portion. A locked state in which the device 16 is prevented from coming off due to the locking action is brought about.

In addition, since the two second struts 12A and 12B are locked by the locking action of the locking means 16 in this manner, the two second struts 12A and 12B are also locked. The inclined surface 21 of the lock member 18 comes into contact with the surface 27A of the connecting member 27 while the connecting member 27 of the supporting column 12B is being inserted into the lengthwise end of the main body 26 of the second supporting column 12A. A locked portion 28 in which a front portion 18A of the locking member 18 once retreated against the elastic force of the coil spring and then advanced by the elastic biasing force of the coil spring is provided on the connecting member 27. Therefore, it is necessary to lock the two second struts 12A and 12B deployed in series to prevent them from coming off during the deployment work. It can be realized naturally without depending on the person.

Further, the hole 30 provided for inserting the pin-shaped member 34 into the first connecting arm 29 of the second support column 12A is an elongated hole elongated in the length direction of the second support column 12A. The upward rotation of the second support 12A with respect to the second support 12B about the member 34 is carried out by lifting the second support 12A, and as shown in FIGS. As shown, the pin-shaped member 34 is positioned at the lower end of the elongated hole 30 whose longitudinal direction is the vertical direction. The distance between the two pillars 12A and 12B is increased. As a result, the second strut 12A rotates upward with respect to the second strut 12B around the pin-shaped member 34, and the second strut 12B is installed inside the lengthwise end of the main body 26 of the second strut 12A. The operation of inserting the connecting member 27 can be performed smoothly without the longitudinal ends of the main body 26 being caught on the surface 27A of the connecting member 27. By descending by the length, the connecting member 27 of the second column 12B can be completely fitted inside the end of the main body 26 of the second column 12A in the longitudinal direction, and the locking member 18 can be released. By moving forward with the elastic biasing force of the coil spring, the front end portion 18A of the locking member 18 can be locked to the locked portion 28 of the connecting member 27 as a locking portion.

Furthermore, as described above, the surface 27A of the connecting member 27 is the same as a portion of the spherical surface, so that the second struts 12A and 12B also extend in the longitudinal direction of the main body 26 of the second strut 12A. The operation of inserting the connecting member 27 of the second strut 12B into the inside of the end portion can be performed more reliably by the guiding action of the surface 27A.

Further, the surface 27A of the connecting member 27, which is the same as a portion of the spherical surface, is formed continuously over the entire circumference in the circumferential direction of the second strut 12B, as described above. Therefore, regardless of the position of the pin-shaped member 34 in the circumferential direction of the two second struts 12A and 12B, in other words, the first connecting arm 29 of the second strut 12A is positioned on the second strut 12A. No matter where the two struts 12A are positioned in the circumferential direction, or where the second connecting arm 31 of the second strut 12B is located at any circumferential position of the second strut 12B, the second strut 12 The operation of inserting the connecting member 14 of the first strut 11 into the interior of the end portion in the length direction of the main body 26 can be performed more reliably by the guiding action of the surface 14A of the connecting member 14 . Therefore, the first connecting arm 29 can be attached to any position in the circumferential direction of the second column 12A, and the second connecting arm 31 can also be attached to any position in the circumferential direction of the second column 12B. .

Further, when the above-described operation portion 22 provided on the lock member 18 and exposed to the outside of the second support column 12A is pulled, the lock member 18 is retracted against the elastic force of the coil spring 20 and locked. When the tip portion 18A of the member 18 separates from the engaged portion 28 of the connecting member 27, the two second struts 12A and 12B are locked and the connected state in which they are prevented from coming off is released. However, when these two second struts 12A and 12B are in series in the vertical direction, as shown in FIG. 16(C), At least a portion of the operating portion 22 is covered by the first connecting arm 29 attached to the second support 12A and the second connecting arm 31 attached to the second support 12B. The first connecting arm 29 attached to the second support column 12A has an L-shape composed of the base portion 29A and the extension portion 29B as described above, and the second connecting arm attached to the second support column 12B 31 also has an L-shape consisting of a base portion 31A and an extension portion 31B, as described above, so that at least a part of the operation portion 22 can be configured as shown in FIG. In the diametrical direction of these struts 12A and 12B, they are arranged between the second strut 12A and the extension 29B of the first connecting arm 29 and the extension 31B of the second connecting arm 31, and At least a portion of the operating portion 22 is arranged between the base portion 29A of the first connecting arm 29 and the base portion 31A of the second connecting arm 31 in the longitudinal direction of the second struts 12A and 12B. As a result, at least part of the operating portion 22 is covered with the first connecting arm 29 attached to the second support 12A and the second connecting arm 31 attached to the second support 12B.

As described above, since at least a part of the operation portion 22 is covered by the two connecting arms 29 and 31 also for these second struts 12A and 12B, an unexpected external force or the like acts on the operation portion 22. It is possible to effectively prevent the two second struts 12A and 12B from being locked and released from being disconnected.

FIG. 18 shows the horizontal member 3 shown in FIG. The horizontal member 3 includes two flanges 15 of the first struts 11 arranged in the width direction B in FIG. A connection means 41 connected to the flange 15 of the second strut 12 is attached. These connecting means 41 are composed of a connecting member 42 formed with a groove 42A elongated in the longitudinal direction of the main body 40 into which the flange 15 can be inserted, a hole vertically penetrating through the connecting member 42, and this hole and a wedge member 43 inserted from above. By inserting the wedge member 43 into a hole vertically penetrating the connecting member 42 and inserting it into the elongated opening 15A of the flange 15 shown in FIGS. Both longitudinal ends of the horizontal member 3 are connected to the flanges 15 of the first and second struts 11 and 12 by wedge action of the wedge member 43, and the horizontal member 3 is arranged in the width direction B in FIG. It is bridged over the two first struts 11 and the two second struts 12 .

FIG. 19 shows the work cloth plate 4 shown in FIG. The work cloth plate 4 is provided with hook portions 46 at both ends in the length direction of a flat body 45 , and these hook portions 46 are also provided on both sides of the body 45 in the width direction. there is Opening recesses 46A that open downward are formed in each of the hook portions 46. By inserting the main body 40 of the horizontal member 3 into these opening recesses 46A, the work cloth plate 4 is formed as shown in FIG. It is spanned by two transverse members 3 which are arranged adjacent to each other in the longitudinal direction A shown. A locking member 48 having an elongated hole 48A into which two pins 47 fixed to the hooks 46 are loosely inserted is movably disposed in each of the hooks 46. After the main body 40 of the horizontal member 3 is inserted into the main body 40 of the horizontal member 3, the locking member 48 is allowed to float, thereby partially closing the opening end of the recessed opening 46A. 40 is prevented from escaping.

Even if the lock member 48 prevents the main body 40 of the horizontal member 3 from slipping out of the opening recess 46A of the hook portion 46, the main body 40 is formed of the round pipe material as described above. Therefore, the body 40 is rotatable within the opening recess 46A. In other words, the work cloth plate 4 is rotatable around the horizontal member 3.

FIG. 20 shows composite 7 shown in FIG. In this composite body 7 consisting of one horizontal member 5 and two brace members 6 arranged crosswise in an X-shape, the horizontal member 5 is made of a thin pipe or bar. Brackets 51 are coupled to both ends of the main body 50 in the longitudinal direction. A hook member 53 rotatably attached to a bracket 51 by a pin 52 is coupled to the upper end of each brace member 6 , and each brace member 6 is vertically rotatable about the pin 52 . A connecting member 54 having a laterally open concave shape is rotatably attached to the lower end portion of each by means of a pin 55. These connecting members 54 are provided with holes into which wedge members 56 are vertically inserted. .

The hook members 53 of each brace member 6 are formed on the flanges 15 of the two first struts 11 and the flanges 15 of the two second struts 12 arranged adjacent to each other in the longitudinal direction A of FIG. The connecting member 54 of each brace member 6 is fitted to the outside of the flange 15 lower than the flange 15 into which the hook member 53 is inserted and locked. By inserting the wedge member 56 into the hole of the connecting member 54 from above and also inserting it into the elongated hole-shaped opening 15A of the flange 15 by pressing or the like, the lower ends of the two brace members 6 are are joined to the flanges 15 of the two first struts 11 and the flanges 15 of the two second struts 12 by the wedging action of the wedge members 56, whereby the composite 7 extends in the longitudinal direction A in FIG. It is bridged over two first pillars 11 and two second pillars 12 that are arranged adjacent to each other.

FIG. 21 shows a state in which a column row 10 ′ in a folded state is formed by connecting one first column 11 and two second columns 12 . In this folded column row 10', of the two second columns 12A and 12B shown in FIG. 14, the second column 12B is connected to the first column 11 shown in FIG. It is assumed to be the second strut 12 . Therefore, by inserting the pin-like member 33 into the hole 30 of the first connecting arm 29 of the second support 12B and the hole 25 of the connecting arm 24 of the first support 11, the second support 12B and the first support 11 are connected. are rotatably connected.

In the column row 10' in this folded state, the first connecting arm 29 of the second column 12A and the second connecting arm 31 of the second column 12B are connected by the pin-shaped member 34, thereby the column column 10' A rotatable first joint means 61 is composed of the first connecting arm 29 , the second connecting arm 31 and the pin member 34 . Further, by connecting the first connecting arm 29 of the second column 12B and the connecting arm 24 of the first column 11 with the pin-shaped member 33, the second joint means 62 which allows the column column 10' to rotate freely. is composed of the first connecting arm 29 , the connecting arm 24 and the pin-like member 33 . 8 and 9, the first connecting arm 29 and the second connecting arm 31 of the second strut 12 are arranged on diametrically opposite sides of the second strut 12. Therefore, in the column row 10′ in the folded state, the one first column 11 and the two second columns 12A and 12B are folded ninety-nine times by the first joint means 61 and the second joint means 62. ) shape, in other words, it is folded in a zigzag shape.

Such a folded column row 10' is used as a main element for forming the folding temporary scaffolding 1 shown in FIG. , four in the longitudinal direction A as shown in FIG. 22, and two in the width direction B as shown in FIG. In addition, regarding the two column columns 10' placed in the width direction B, one first column 11 and two second columns 12A and 12B are divided between the first column 11 and the second columns 12A and 12B. Of the four flanges 15 provided in each of the flanges 15, at the flange 15 on which the work cloth plate 4 shown in FIG. This is done for each of the columns 10' arranged four in the direction A. As shown in FIG. As a result, the two column columns 10 ′ placed in the width direction B are connected to each other by the horizontal members 3 .

After that, the work cloth plate 4 shown in FIG. 10′, the first strut 11 and the two second struts 12A, 12B are arranged in the longitudinal direction A, and thus the four struts 10′ arranged in the longitudinal direction A are adjacent to each other in the longitudinal direction A. The two column columns 10' are connected to each other by the work cloth plate 4. As shown in FIG.

It should be noted that the above-described work may be performed to convert the column row 10' into a row of columns 10 , and then the row of columns 10 in series may be returned to the row of columns 10' in a folded state.

As described above, the assembly 58 shown in FIGS. 22 and 23 consisting of the folded column row 10', the horizontal member 3, and the work cloth plate 4 is assembled in advance in the above-described material storage area. A transportation vehicle is used to transport the scaffold 1 to a work site such as a building where the folding temporary scaffold 1 shown in FIG. At this work site, as shown in FIGS. 24 and 25, a crane vehicle having a hook member 60 suspended from a boom via a string member 60A such as a wire is arranged. A lifting member 63 is suspended from the member 60 via a string-like member 60B such as a wire. Between this lifting member 63 and the second struts 12A of the respective folded strut rows 10' constituting the assembly 58, a bridge made of a flexible member such as a wire, a chain, or a rope is provided. The strut rows 10' are arranged above the strut rows 10' by spanning the members 64, thereby connecting the respective folded strut rows 10' to the lifting members 63. , and is in a state of being lifted from a lifting member 63 that is lifted by a crane vehicle.

FIG. 26 shows the lifting member 63, FIG. 26(A) being a plan view and FIG. 26(B) being a front view. As shown in FIG. 26(A), the overall shape of the lifting member 63 in plan view is a frame-like quadrangular shape having a length dimension in the longitudinal direction A and a length dimension in the width direction B. Due to this square shape, the overall shape of the lifting member 63 in plan view is the same or substantially the same in size and shape as the overall shape of the foldable temporary scaffold 1 in plan view shown in FIG. . The lifting member 63 connects the ends of two bar members 63A whose length direction is the longitudinal direction A to each other in the length direction of the two bar members whose length direction is the width direction B. One or a plurality of reinforcing bars 63C, in this embodiment, two reinforcing bars 63C, are arranged parallel to the bar 63B to connect the two bars 63A to each other in the longitudinal direction. It is connected by Also, on the upper surface of the lifting member 63, a first connecting member 65 for connecting the lower end of the string-like member 60B is attached. Since two are provided with an interval in the longitudinal direction A, the lifting member 63 is suspended from the hook member 60 shown in FIGS. 24 and 25 by a total of four string members 60B.

As shown in FIGS. 24 and 25, a second connecting member 66 for connecting the upper end of the bridging member 64 is attached to the lower surface of the lifting member 63. 66 are provided for each of the two bars 63A at the same or substantially the same intervals as the row of columns 10 in FIG. Two of these second connecting members 66 are, as shown in FIG. It is provided in the matching place. The upper ends of the bridging members 64 are connected to each of the eight second connecting members 66 provided on the lifting member 63, and the lower ends of these bridging members 64 are shown in FIGS. As shown, each folded column row 10' forming the assembly 58 described above is connected to a second connecting arm 31 provided on the second column 12A.

In addition, as shown in FIG. 26, the lifting member 63 has two bar members 63B which form the ends of the lifting member 63 in the longitudinal direction A in the left-right direction. , the third connecting member 67 is attached. Two third connecting members 67 are provided on the lifting member 63 at locations opposite to each other in the longitudinal direction A. As shown in FIG. The upper end of a control string-like member 68, which is a control member for controlling the , the third connecting member 67 to which the upper end of the control string-like member 68 is connected is provided at the central portion or approximately the central portion of the length of the lifting member 63 in the width direction B, so that the control string-like member 68 is connected to the lifting member 63 at the center or approximately the center of the length of the lifting member 63 in the width direction B, as shown in FIG.

FIG. 27 shows a state in which the hook member 60 is lifted and the lifting member 63 is lifted by the operation of the crane vehicle described above. As the lifting member 63 rises, the second struts 12A to which the lower ends of the bridging members 64 are connected to each of the strut rows 10' in the folded state rotate about the first joint means 61 described above. As a result, the upper struts above the second struts 12B are developed and risen from the second struts 12B. , and the length direction is the vertical direction, so that the two second struts 12A adjacent to each other in the longitudinal direction A are spanned via the horizontal member 3 described above. The main body 40 of the horizontal member 3 inserted into the opening recess 46A of the hook portion 46 shown in FIG. By moving, it assumes a horizontal or substantially horizontal posture at right angles or substantially right angles to the second strut 12A.

Further, when the second support 12A becomes an upper support above the second support 12B and rises around the first joint means 61, the second supports 12A and 12B are rotatably connected to each other. 21, which is a constituent member of the first joint means 61, has its axial direction in the width direction B perpendicular to the length direction of the second struts 12A and 12B. Therefore, the upper end portion of the second support 12A moves in the longitudinal direction A included in the vertical plane in which the second support 12A rotates about the pin-shaped member 34 .

Therefore, when the hook member 60 and the lifting member 63 are lifted to raise the second support columns 12A in the respective folded support column rows 10', as shown in FIG. At a point on the opposite side of A, an operator 69 grasps by hand each of two control string-like members 68 whose upper ends are connected to the lifting member 63 by a third connecting member 67, and these operators 69 pulls or loosens the control cord-like member 68, thereby performing an operation for controlling the movement of the lifting member 63 in the longitudinal direction A. Since the two control string-like members 68 are connected to locations on opposite sides of the lifting member 63 in the longitudinal direction A, the position of the lifting member 63 is opposite to each other in the longitudinal direction A. can be done in two directions.

As a result, even if the upper end of the second support 12A moves in the longitudinal direction A included in the vertical plane in which the second support 12A rotates about the pin-shaped member 34, the lifting member 63 remains in position. The position of the lifting member 63 in the longitudinal direction A is appropriately adjusted according to the behavior of the second strut 12A around the pin member 34 while suppressing large fluctuations in the longitudinal direction A by means of the two control string members 68. Therefore, by raising the lifting member 63, the second column 12A can be properly raised to unfold the folded column row 10'.

In addition, since each of the control string members 68 is connected to the central portion or approximately the central portion of the length of the lifting member 63 in the width direction B by the third connecting member 67, the control string members 68 are used for lifting. Controlling the position of the member 63 in the longitudinal direction A and appropriately adjusting the position of the lifting member 63 in the longitudinal direction A according to the behavior of the second strut 12A about the pin-shaped member It can be implemented equally or substantially evenly for the two columns 10' in the folded state that are spaced apart from each other.

FIG. 28 shows work to be performed by the operator after this. This work is performed by removing two of the above-described four flanges 15 of the second struts 12A arranged at both ends in the longitudinal direction A of the four second struts 12A rising from the second struts 12B. By connecting the end portion of the horizontal member 3 of FIG. Two horizontal members 3 are bridged over the second struts 12A of the two strut rows 10' arranged in the width direction to increase the connection strength between the second struts 12A. B, two of the second struts 12A arranged in the longitudinal direction A of the two second struts 10' arranged in the longitudinal direction A are adjacent to each other in the longitudinal direction A. By connecting the ends of the composite 7 consisting of the horizontal member 5 and the two brace members 6 shown in FIG. and a work for extending the composite body 7 between the two second struts 12A that are connected to each other to increase the connection strength between the second struts 12A.

In addition, for each of the two column columns 10' arranged in the width direction B, the work of arranging the baseboards 8 on the second columns 12A arranged in the longitudinal direction A is also performed. Among the four second struts 12A arranged in the longitudinal direction A, the first baseboard holding members 80 attached to the second struts 12A arranged at both ends in the longitudinal direction A, and the remaining two The baseboard 8 is held by the second baseboard holding member 81 attached to the second support 12A of the book. The first baseboard holding member 80 has a coupling portion 80A coupled to the second support 12A, and a holding portion 80B fixed to the coupling portion 80A and having a concave shape in plan view. The baseboard 8 is held by the first baseboard holding member 80 by inserting the longitudinal end of the baseboard 8 into the holding portion 80B. The second baseboard holding member 81 has a connecting portion 81A connected to the second support 12A and a holding piece 81B having an upper end fixed to the connecting portion 81A and extending downward in parallel with the second support 12A. , and the middle part of the baseboard 8 in the length direction is sandwiched between the holding piece 81B and the second support 12A. held by

By performing the above work, the third floor, which is the highest floor in the three-story folding temporary scaffolding 1 described in FIG. 1, is completed by the second support 12A. These three stories are equipped with a horizontal member 3, a work cloth board 4, a composite 7, and a baseboard 8. The installation work of the horizontal member 3, composite 7, and baseboard 8 is Since it is performed when the second column 12A is at a low position from the ground, the worker can easily perform these mounting operations.

FIG. 29 shows a state in which the hook member 60 of the crane vehicle is raised more than in FIGS. 27 and 28 and the hoisting member 63 is also raised. As the lifting member 63 rises, the second struts 12B in the respective strut rows 10' move around the above-described first joint means 61 with respect to the second struts 12A, and with respect to the first struts 11, the above-described Since they are deployed around the second joint means 62 , the second support 12B rises from the first support 11 and becomes an upper support above the first support 11 . In addition, when the second support 12B rises from the first support 11 in this way, the second support 12B is vertically in series with the already standing second support 12A. The locking means 16 provided operate as explained in FIG. 16 which shows this locking means 16. At this time, when the hook member 60 and the lifting member 63 are slightly lowered, the second column 12A is lowered relative to the second column 12B by the length of the long hole 30 shown in FIG. As explained in 16(C), the tip portion 18A of the locking member 18 of the locking means 16 is formed in the connecting member 27 of the second strut 12B inserted inside the longitudinal end of the second strut 12A. As described above, the two second struts 12A and 12B are automatically locked in series without intervention by the operator.

When the second support 12B is raised as described above, the horizontal members 3 are attached to the two second supports 12B adjacent to each other in the longitudinal direction A in the same manner as when the second support 12A is raised. Each work cloth plate 4 bridged over the second support 12B takes a horizontal or substantially horizontal posture at right angles or substantially right angles to the second support 12B.

As described above, the second column 12A forms three levels in the three-story folding temporary scaffolding 1 described with reference to FIG. forms the second floor of the folding temporary scaffolding 1, and after erecting the second pillar 12B for the second floor, the worker, in the same way as the third floor, As for the floor, as shown in FIG. , 81 is performed.

FIG. 31 shows a state in which the hook member 60 of the crane vehicle is raised further than in FIGS. 29 and 30 and the hoisting member 63 is raised. As the lifting member 63 rises, the first struts 11 in each row of struts 10' rotate about the second joint means 62 described above with respect to the second struts 12B. 11 rises. In addition, when the first support 11 is raised in this manner, the first support 11 is vertically aligned with the already raised second support 12B. 16 operates as explained in FIG. 12 which shows this locking means 16 . At this time, when the hook member 60 and the lifting member 63 are lowered slightly, the second support 12B and the first support 11 are lowered, and the lower end of the first support 11 comes into contact with the ground, and the second support 12B is lifted. By descending from the first post 11 by the length of the long hole 30 indicated by 12, the tip portion 18A of the locking member 18 of the locking means 16 is The second post 12B is engaged with the engaged portion 23 formed in the connecting member 14 of the first post 11 inserted inside the longitudinal end of the second post 12B. As described above, the struts 11 are automatically locked in a series state regardless of the operator.

When the first struts 11 in each folded strut row 10' stand up as described above, the two second struts 12A and 12B are adjacent to each other in the longitudinal direction A in the same manner as when the two second struts 12A and 12B stand up. Each of the working cloth plates 4 bridged over the two first support columns 11 via the horizontal members 3 takes a horizontal or substantially horizontal posture perpendicular or substantially right angle to the first support columns 11 .

This first support 11 forms one floor in the three-story folding temporary scaffolding 1 described in FIG. In the same manner as in the case of the third and second floors, the worker also performs the bridge work of the two horizontal members 3 and the bridge of the composite body 7 for the first floor as shown in FIG. work and work to hold the baseboard 8 by the first and second baseboard holding members 80 and 81 are performed.

As described above, the folded column row 10' consisting of one first column 11 and two second columns 12A and 12B becomes the column column 10 in which these columns 11, 12A and 12B are vertically arranged in series. As a result, the foldable temporary scaffolding 1 shown in FIG.

In addition, in the middle of the work of forming the temporary scaffold 1 in a state of being lifted from the lifting member 63, the upper end of the second support column 12B forming the column row 10' in the folded state was removed as described above. In the vertical plane where the second support 12B rotates about the pin member 34 of the first joint means 61 connecting the two second supports 12A and 12B in the same manner as the upper end of the second support 12A. In addition, the upper end of the first support column 11 forming the column row 10' in the folded state also moves in the upper end of the second support columns 12A and 12B. Similarly, the longitudinal direction included in the vertical plane in which the first support 11 rotates about the pin-shaped member 33 of the second joint means 62 connecting the second support 12B and the first support 11 It will move to A.

Even if the second strut 12B and the first strut 11 behave in this way, as described above, the lifting member 63 does not have a work force at locations on the opposite sides of the lifting member 63 in the longitudinal direction A. Since the two control string-like members 68 held by the worker 69 are connected, each worker 69 pulls the control string-like member 68, By loosening the lifting member 63, the position of the lifting member 63 can be prevented from greatly fluctuating in the longitudinal direction A by the two control string members 68. The position of the lifting member 63 in the longitudinal direction A can be appropriately adjusted according to the behavior of the second support 12B and the first support 11. Therefore, by raising the lifting member 63, the support in the folded state The operation of raising the second struts 12B and the first struts 11 for deploying the row 10' can be properly performed. In addition, since the two control string-like members 68 are connected to the opposite sides of the lifting member 63 in the longitudinal direction A, the operator can adjust the position of the lifting member 63 in the longitudinal direction A. can be done for two opposite directions in .

28, 30 and 32, the assembly 58 shown in FIG. 22 and FIG. This may be carried out when performing the work of forming the second struts 12A and 12B, the work cloth plate 4, and the like.

FIG . 33 shows the temporary scaffolding 1 lifted from the lifting member 63 by traveling of the crane vehicle. The operation for transporting over the body 70 and placing it on this base body 70 is shown. This base body 70 is shown in FIG. 34, where FIG. 34(A) is a front view and FIG. 34(B) is a side view. The base body 70 is composed of a jack base 71, a base body strut 75, a horizontal member 3 shown in FIG. 18, a horizontal member 78, and a composite body 7 shown in FIG. The horizontal member 78 differs from the horizontal member 3 only in its length dimension, and as will be described later, is bridged over two base body struts 75 arranged adjacent to each other in the longitudinal direction A. It is something that can be done.

FIG. 35 shows the jack base 71, where (A) is a front view and (B) is a side view. The jack base 71 has a flat plate-shaped base member 72, a male threaded rod 73 erected and fixed to the base member 72, and a female screw threadedly engaged with the male screw of the male threaded rod 73. It is composed of an elevating member 74 that elevates and lowers along the male threaded rod 73 by rotating the handle 74A. FIG. 36 shows the base body strut 75, where (A) is a plan view, (B) is a front view, and (C) is a bottom view. The base body strut 75 has an outer diameter that allows the male threaded rod 73 of the jack base 71 to be inserted therein, and is the same as the main body 13 of the first strut 11 in FIG. 2 and the main body 26 of the second strut 12 in FIG. A main body 76 formed of a round pipe material having a diameter, four flanges 15 connected to the outer peripheral portion of the main body 76, and a top end which is one end in the length direction of the main body 76. It consists of a connecting member 77 that is connected to the Since the flanges 15 of the base body struts 75 are the same as the flanges 15 provided on the first struts 11 and the second struts 12, the flanges 15 of the base body struts 75 are also the lengths of the base body struts 75. Long-hole-shaped openings 15A penetrating in the vertical direction are formed at intervals of 90 degrees in the circumferential direction of the base body struts 75 . The connecting member 77 has an outer diameter that allows it to be inserted into the main body 13 of the first post 11. The connecting member 77 has a lock provided on the first post 11 as shown in FIGS. A locked portion 77A into which the tip portion 18A of the locking member 18 of the means 16 can be inserted and locked is formed as a recess or a hole.

In order to arrange the base body 70 at the place where the folding temporary scaffolding 1 of FIG. The work of arranging the jack bases 71, eight jack bases 71 in this embodiment, is performed, and the arrangement intervals of these jack bases 71 are the same as the arrangement intervals of the column columns 10 in the folding temporary scaffold 1 of FIG. to be the same as After that, as shown in FIG. 38, the lower ends of the main bodies 76 of the base support columns 75 are inserted into the outer circumferences of the male threaded rods 73 of the respective jack bases 71. The lower surface of each jack base 71 is brought into contact with the lifting member 74, and the lifting member 74 is rotated by the handle 74A to lift the lifting member 74 along the male threaded rod 73. are eliminated, and the height positions of the respective base body struts 75 are aligned.

Next, as shown in FIG. 34, for each of the four base body struts 75 arranged in the longitudinal direction A, two adjacent base body struts 75 are horizontally attached to the composite body 7 . The member 78 is bridged, and the horizontal bridge member 3 is bridged over the two base body struts 75 arranged in the width direction B. - 特許庁Thereby, the base body 70 is completed.

Above the base body 70, as can be seen from FIG. 33, the crane vehicle travels to move the above-described temporary scaffolding 1 lifted from the lifting member 63, and then the crane vehicle operates to move the hook of the crane vehicle. The member 60 is lowered to gradually lower the lifting member 63 and the temporary scaffold 1 into the lower ends of the first stanchions 11 in each stanchion row 10 of this temporary scaffold 1, i.e. as shown in FIG. The connecting member 77 of the base body support 75 is inserted into the lower end portion of the main body 13 of the first support 11 . As a result, the temporary scaffolding 1 is placed on the base body 70, and the temporary scaffolding 1 and the base body 70 at this time are shown in FIG.

In the above-described embodiment, in order to form the folding temporary scaffolding 1, the hook member 60 and the lifting member 63 of the crane vehicle are lifted to form the respective folded column columns 10'. 12B is raised as shown in FIG. 29, and after the first strut 11 is raised as shown in FIG. 12 and FIG. 16 by lowering the second struts 12A and 12B by the length of the long hole 30 shown in FIGS. However, this work is performed by gradually lowering the lifting member 63 and the temporary scaffolding 1 as described above, and then lifting the respective columns 10. 12 and FIG . It may be implemented by lowering the second struts 12A and 12B by the length of the hole 30 .

In addition, as described above, when performing the work for inserting the connection member 77 of the base body support column 75 into the inside of the lower end portion of the main body 13 of the first support column 11, the lifting member 63 is provided with the longitudinal direction A opposite to each other. The positions of the lifting member 63 and the temporary scaffolding 1 are properly moved in the longitudinal direction A by the operator 69 pulling or loosening each of the two connected control string members 68 on the side. By doing so, the work for inserting the connection member 77 of the base body support post 75 into the inside of the lower end portion of the main body 13 of the first support post 11 may be properly performed.

Further, in this embodiment, as described above, when the connecting member 77 of the base body strut 75 is inserted inside the lower end portion of the main body 13 of the first strut 11, as shown in FIG. In addition, a chamfered portion 77B is formed on the upper end surface of the connecting member 77, and the locking member 18 of the locking means 16 of FIGS. As shown, since the inclined surface 21 is inclined at the tip portion 18A, the lock member 18 resists the elastic force of the coil spring 20 by the guiding action of the chamfered portion 77B and the inclined surface 21. fall back. When the lower end surface of the main body 13 of the first support column 11 abuts the upper end surface of the main body 76 of the base support support 75, the front end portion 18A of the lock member 18 advanced by the elastic force of the coil spring 20 is pushed forward as shown in FIG. The first strut 11 is inserted into and locked to the locked portion 77A of the connecting member 77 shown, whereby the first strut 11 is locked with respect to the base strut 75. As shown in FIG.

By placing a worker on the work cloth board 4 of the temporary scaffolding 1 which is placed on the base body 70 in this manner and locked to the base body 70, the worker can perform construction and the like. Can perform prescribed tasks.

In the temporary scaffolding 1 at this time, each column 10 in which one first column 11 and two second columns 12 are vertically arranged in series is provided with the first columns 11 and 2. A lock means 16 for locking the two second pillars 12A and 12B out of the second pillars 12 in series to prevent them from coming off, and the second pillar 12B and the first pillar 11 in a series state. The lock member 18 of these lock means 16 is retracted against the elastic force of the coil spring 20 to release the lock. As described above, at least a part of the operating portion 22 is provided on the connecting arm 24 provided on the first support 11 and on the second supports 12A and 12B. Since the operating portion 22 is covered by the first and second connecting arms 29 and 31, it is possible to prevent an unexpected external force or the like from acting on the operating portion 22, thereby preventing the locking means 16 from being unlocked. can be effectively prevented.

In addition, although the column row 10 in the folding temporary scaffolding 1 of the present embodiment described above is composed of one first column 11 and two second columns 12A and 12B, the two second columns The number of the second struts 12 may be three or more by connecting the second struts 12 above the upper second struts 12A among the struts 12A and 12B. In the folding temporary scaffolding 1 of the present embodiment, the number of column columns 10 was four in the longitudinal direction A and two in the width direction B. may be 1 to 3 or 5 or more, and may be 1 or 3 or more in the width direction B.

Further, even if the folding temporary scaffolding 1 according to the present embodiment is formed by being unfolded by raising the lifting member 63 as described above, the locking members 18 of the respective locking means 16 are moved by the operating portions 22 to the coil springs 20 . When retracted against the elastic force of the lock member 18, the tip portion 18A serving as the engaging portion of the locking member 18 is engaged with the engaged portion 23 of the connecting member 14 of the first post 11 and the connecting member of the second post 12. 27 can be released from the locked portion 28, the deployed temporary scaffolding 1 can be returned to the initial folded state.

INDUSTRIAL APPLICABILITY The present invention can be used in operations for deploying folding temporary scaffolds used at various work sites such as building construction sites, demolition sites, civil engineering work sites, and painting work sites.

REFERENCE SIGNS LIST 1 foldable temporary scaffolding 3 horizontal member 4 work cloth board 5 horizontal member 6 brace member 7 composite 10 row of columns in series 10' row of columns in folded state 11 first column 12, 12A, 12B second upper column Struts 24, 29, 31 Connecting arms 25, 32 Round holes 30 Long holes 33, 34 Pin-like members 63 Lifting members 64 Bridge members 68 Control string-like members 69 Operator A Horizontally A certain longitudinal direction B Width direction

Claims (12)

It includes at least two struts that are arranged in series in the vertical direction by being deployed, and the vicinity of the ends of these struts is aligned in the axial direction perpendicular to the length direction of the two struts. A hoisting device for hoisting a folding temporary scaffold in which the two pillars can be freely folded and unfolded by being rotatably connected by a pin-shaped member,
A hoisting member arranged above the upper pillar, which is the upper pillar when the two pillars are deployed, and is operated to be raised; A hoisting device for a folding temporary scaffold comprising a member and a bridging member that spans between the upper pillars and that suspends the upper pillars from the hoisting member,
When the two pillars that have been folded are unfolded by the lifting of the hoisting member and the upper pillar is raised, the position of the hoisting member is adjusted to the position of the upper pillar around the pin-shaped member. A control member is connected for controlling movement in the horizontal direction contained within the vertical plane of rotation,
The folding temporary scaffolding is constructed by providing a plurality of the two support columns in each of two horizontal directions perpendicular to each other, and the position of the lifting member is controlled to move by the control member. the direction is one of the two horizontal directions;
A horizontal member is bridged over the two columns adjacent to each other in the other horizontal direction of the two horizontal directions, and the two columns are adjacent to each other in the one horizontal direction. A work cloth board for a worker to ride or walk on for work is laid across the horizontal member,
When the lifting members are lifted, the two folded pillars are unfolded and the upper pillars are erected, and the horizontal members bridged over the upper pillars are moved against the work cloth plate. A lifting device for a foldable temporary scaffold, characterized in that the work cloth plate assumes a horizontal or substantially horizontal posture by rotating with the lifting device. 2. The lifting device for a folding temporary scaffold according to claim 1, wherein the overall shape of the lifting member in plan view is the same as the overall shape in plan view of the foldable temporary scaffold when deployed. Or, it has a substantially identical square shape, and the lifting member is connected to the upper end of the bridging member provided for each of the two pillars. Scaffold lifting equipment. 3. The lifting device for folding temporary scaffolding according to claim 2, wherein said lifting members comprise two bar members whose longitudinal direction is said one horizontal direction, and said other horizontal direction is said longitudinal direction. A foldable temporary scaffolding characterized in that it comprises two bar members connecting the longitudinal ends of the two bar members to each other. lifting device. The lifting device for a folding temporary scaffold according to any one of claims 1 to 3, wherein the upper ends of the control members are connected at two locations on the one side of the lifting member that are opposite to each other in the horizontal direction. A lifting device for folding temporary scaffolding characterized by: 5. The lifting device for folding temporary scaffolding according to claim 4, wherein the upper end of the control member is connected to the lifting member at the center or approximately the center of the other horizontal length of the lifting member. A lifting device for a folding temporary scaffold, characterized in that 6. The lifting device for a folding temporary scaffold according to claim 1, wherein said control member is a flexible cord-like member. 7. The lifting device for a folding temporary scaffolding according to claim 6 , wherein said string member is operated by an operator. It includes at least two struts that are arranged in series in the vertical direction by being deployed, and the vicinity of the ends of these struts is aligned in the axial direction perpendicular to the length direction of the two struts. A hoisting method for hoisting a folding temporary scaffold in which the two pillars can be freely folded and unfolded by being rotatably connected by a pin-shaped member, comprising:
A hoisting member arranged above the upper pillar, which is the upper pillar when the two pillars are deployed, and is operated to be raised; lifting the folding temporary scaffolding by a lifting device comprising a member and a bridging member that spans between the upper pillars and causes the upper pillars to be in a state of being suspended from the lifting member; At the time of lifting, the control member connected to the lifting member controls the position of the lifting member in the horizontal direction included in the vertical plane in which the upper column rotates about the pin-shaped member. It is a lifting method for
The folding temporary scaffolding is constructed by providing a plurality of the two support columns in each of two horizontal directions perpendicular to each other, and the position of the lifting member is controlled to move by the control member. the direction is one of the two horizontal directions;
Before the folding temporary scaffold is lifted by the lifting device, a horizontal member is bridged over the two columns adjacent to each other in the other horizontal direction of the two horizontal directions. a first work step for spanning a work cloth board on which a worker rides or walks in order to perform work, between the horizontal members arranged adjacent to each other in the horizontal direction;
After the first work step, the lifting member is lifted, and when the lifting of the lifting member unfolds the two folded pillars and raises the upper pillar, the position of the lifting member is changed to the above A control member controls the movement of the one horizontal direction, and the horizontal member suspended over the upper pillar rotates with respect to the work cloth plate, so that the work cloth plate is horizontally or substantially a second work step for horizontal posture;
A method for lifting a folding temporary scaffold, comprising: 9. In the method for lifting a folding temporary scaffold according to claim 8, the lifting member is connected to upper ends of a plurality of the control members, and these control members control the position of the lifting member in the second work step. is controlled to move in the one horizontal direction. 10. The method of lifting a folding temporary scaffold according to claim 9, wherein the plurality of control members are flexible with the upper ends connected at two locations on the one horizontal direction of the lifting member opposite to each other. A method for lifting a folding temporary scaffold, characterized in that the folding type temporary scaffolding consists of two members. 11. The method for lifting a folding temporary scaffold according to claim 8, wherein the folding temporary scaffolding lifted by the lifting member is installed after the second work step. A folding temporary scaffolding characterized in that the folding temporary scaffolding is transferred above a base body pre-arranged at a place where the scaffolding should be placed, and a third work step is carried out for placing the folding temporary scaffolding on the base body. method of lifting. 12. The method for lifting a folding temporary scaffolding according to claim 11, wherein the work of placing the folding temporary scaffolding on the base body in the third work step gradually lifts the lifting member and the folding temporary scaffolding. and placing the folding temporary scaffold on the base body, the control member controls the movement of the lifting member and the folding temporary scaffold in the one horizontal direction. A method for lifting a folding temporary scaffold.

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