JP2013170371A - Work platform and assembly construction method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and quickly and safely perform the assembly or disassembly of a work platform configured to make it possible to install a work floor with a wide area at a high position, and to make it unnecessary to install any large-sized heavy machinery such as a crane.SOLUTION: The work platform includes: a work floor 2 which is assembled in a state that post through ports 13 pass therethrough in a vertical direction are disposed at a plurality of places separated from each other; a plurality of leg posts 3 which are constructed with a layout corresponding to the respective column through ports 13 of the work platform 2; a lifting device 4 for lifting the work floor 2 upward with the upper side of each of the constructed leg posts 3 than the work floor 2 as a hanging position; and a lock pin 5 for penetrating the leg posts 3 like on a skewer in the thickness direction in the post through ports 13 of the work floor 2 lifted by the lifting device 4 with both end portions engaged with the work floor 2 side.

Description

  The present invention relates to a work scaffold and its assembly method.

A small and lightweight building frame that is integrally formed with the torii type (gate type), called “bity frame”, etc., is connected to the work platform with steel cloth boards (top board) and braces (braces). There exists a thing of the structure assembled to a type | mold, and it is generally known (for example, refer patent document 1 etc.).
However, in a work platform using such a “bitty frame”, when a work floor having a large area is to be formed at a high position, a large number of “bitty frames” are laid down below the work floor. There was a serious problem that the bottom of the work floor could not be used because it had to be stacked. Further, there is a problem that the assembling work is very troublesome and difficult. In addition, the higher the working floor height, the more the workers who perform assembly and disassembly work will be forced to perform unstable work at high places. is not.

  By the way, the thing of the structure assembled while using the beam material provided with the truss structure as a pillar, a girder, etc. is known as a large-sized working scaffold surrounding a building (for example, refer patent document 2 etc.). In this type of large work scaffold, although a roof that covers a building may be constructed, it is not expected to form a work floor with a large area at a high place in place of the roof.

  When assembling this type of large work scaffold, after connecting a plurality of beam members to the gate type or saddle type on the ground, the portal type or saddle type is lifted by a heavy machine such as a crane. It has been proposed to connect vertically.

JP-A 63-206568 JP 2008-144473 A

  When providing a work floor with a large area at a high position such as a bridge or a tower, or at a high position such as the interior of a building, the large work scaffold disclosed in Patent Document 2 is used. Assume that the work floor is assembled at the top. In this case, as described above, a heavy machine such as a crane is indispensable, so that the assembly work becomes a large-scale work. Therefore, there is a serious problem that the work scaffold cannot be assembled in a narrow place where heavy machinery cannot enter, a place where the working height of heavy equipment cannot be secured, or a place where there is no passage necessary for heavy equipment to enter and exit. Expected to happen.

In addition to the large amount of assembly work, careful work is also required to ensure the safety of workers, so the size of heavy machinery and the use of multiple units, the increase in the number of workers, Problems that require a longer time are also predicted.
As a result, when a work floor with a large area is provided at a high position in the building or at a high position inside the building, assembly and disassembly can be performed easily, quickly and safely without using a heavy machinery such as a crane. It can be said that there has never been a work platform that can be used.

  The present invention has been made in view of the above circumstances, and it is possible to easily and quickly and safely assemble and disassemble a work scaffold having a configuration in which a work floor having a large area can be provided at a high position. It is an object of the present invention to provide a work scaffold and its assembly method that can eliminate the need for large heavy machinery such as cranes.

In order to achieve the above object, the present invention has taken the following measures.
That is, in the work scaffold according to the present invention, the work floor assembled in a state in which the column through holes penetrating in the vertical direction are arranged at a plurality of positions separated from each other, and the arrangement corresponding to each pillar through hole of the work floor is built. A plurality of foot pillars to be loaded, and pulling up the work floor upward with the upper side as a hanging position from the work floor of each foot pillar built through the pillar through hole of the work floor in the vertical direction And a lock pin for penetrating the foot pillar in the thickness direction in the through-hole of the work floor pulled up by the lifting device and engaging both ends with the work floor side. It is characterized by.

The work floor is provided with a pair of pin insertion portions that allow the lock pin to pass through in a skewered manner toward the foot pillar in the pillar passage opening, and the foot pillar is provided in the pillar passage opening. It is preferable that a plurality of lock holes penetrating in the thickness direction of the pedestal are provided side by side in the vertical direction so as to be able to selectively match the pair of pin insertion portions.
The work floor is formed in a bowl shape and has a pillar frame in which a pillar passage opening for the foot pillar is formed inside, and a plurality of interconnects between adjacent column frames arranged to correspond to the foot pillars. It is preferable to have a beam material of a book and a base plate laid on top of a floor structure configured using the column frame and the beam material.

  On the other hand, in the assembly method of the work scaffold according to the present invention, while assembling the work floor in a state where the column through holes penetrating in the vertical direction are arranged at a plurality of locations separated from each other, preceding and following the assembly of the work floor, Or, in parallel, install a plurality of foot pillars in an arrangement corresponding to each pillar passage opening on the work floor, and work on each foot pillar built in a state passing through each pillar passage opening on the work floor in the vertical direction. The lifting device is hung on the upper side from the floor to be in a suspended state, the lifting device is connected to the work floor, and the lifting device lifts the working floor upward with respect to each foot column, and the lifting device. The both ends of the lock pin are engaged with the work floor side by penetrating the lock pin in the thickness direction with respect to the foot pillar in the through hole of the work floor pulled up by Toss .

  It is preferable that a plurality of the lifting devices are attached to each of the foot pillars so that the lifting force of the work floor is generated in each of the different lifting devices.

  In the work scaffold and its assembly method according to the present invention, it is possible to easily, quickly and safely assemble and disassemble the work scaffold having a configuration capable of providing a work floor having a large area at a high position. Large heavy machinery such as cranes can be eliminated.

It is the perspective view which showed the work scaffold which concerns on this invention. It is an AA arrow line view of FIG. 2A and 2B show a two-way connection type column frame, where FIG. 1A is a front view and FIG. 2B is a side view. It is a BB line arrow directional view of FIG. It is the front view which showed the 4-way connection type | mold column frame. The foot pillar is shown, (A) is a front view, and (B) is a side view. It is the side view which expanded and showed the connection part of the foot pillar. It is the perspective view which showed the connector used for connection of a foot pillar. It is the perspective view which showed the case where a two-way connection type | mold column frame is used when assembling a floor structure. It is the perspective view which showed the case where a 4-way connection type | mold column frame is used when assembling a floor structure. It is the perspective view which showed an example of the beam material. It is the top view which showed the structure which connects beam materials in the position without a foot pillar. It is the schematic diagram which showed the assembly method of the working scaffold which concerns on this invention in order of (A)-(C) along order with time. It is the schematic diagram which showed the procedure which raises the installation height of a work floor in order of (A)-(B) along order with time. It is the schematic diagram which showed the assembly method in the case of assembling a work scaffold so that a movement was possible in order of (A)-(B) along order with time.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIGS. 1 to 12 show a working scaffold 1 according to the present invention and materials used for the assembly thereof, and FIGS. 13 to 14 and FIG. 15 show an assembly method for the working scaffold 1. The work scaffold 1 has a wide area (for example, a long side of 10 m, a short side of 8 m) such as a high position in a structure such as a bridge or a tower or a high position in a building (for example, a position 20 m from the ground). The floor 2 can be provided, and assembly and disassembly can be performed easily, quickly and safely without using a large heavy machine such as a crane.

First, the work scaffold 1 will be described.
As shown in FIG. 1, the work scaffold 1 has a work floor 2 and a plurality of foot pillars 3 that support the work floor 2, and as shown in FIG. 2, It has a pulling device 4 and a lock pin 5 used when fixing the work floor 2 to a predetermined height.
The work floor 2 includes a floor structure 10 configured by using the column frame 8 and the beam material 9 and a base plate 11 laid on the upper portion of the floor structure 10. As shown in FIG. 9 or FIG. 10, the floor structure 10 has the column frames 8 arranged in accordance with a predetermined interval (an interval at which the foot column 3 is erected), and a space between the adjacent column frames 8 between the beam members 9. It is constituted by connecting with each other.

  As the beam member 9, as shown in FIG. 11, a hollow or solid bar member or the like assembled in a truss structure may be used, or a steel bar or a hollow member (pipe or the like) may be used. Moreover, what is necessary is just to use the connection block 12 of the cube shape for the connection of the beam material 9 in the location which does not arrange | position the foot pillar 3. FIG. The detailed structure of the beam members 9 and the connection block 12 and the selection of use / non-use of the connection block 12 are not limited at all in the present invention. The size and installation height required for the work floor 2 are not limited. It can be changed as appropriate according to the load resistance.

FIG. 9 shows a case where a rectangular work floor 2 is assembled using a two-way connection type column frame 8 to be described later, and the beam members 9 provided in the short side direction of the floor structure 10 are interconnected. The connecting block 12 is used, and the beam 9 provided on the long side of the floor structure 10 is interconnected between the connecting block 12 and the column frame 8 in a state where the column frame 8 is connected to the connecting block 12. I am doing so.
On the other hand, FIG. 10 shows a case where a rectangular work floor 2 is assembled using a four-way connection type column frame 8 which will be described later, and the beam material 9 provided in the short side direction of the floor structure 10 and the long length. The intersection with the beam member 9 provided on the side is connected only by the column frame 8. Note that the connecting block 12 illustrated in the center in the long side direction of the floor structure 10 may be replaced with the column frame 8, and the foot column 3 may be disposed at this position.

9 and 10 show examples in which the short beam members 9X and 9Y protruding outward in the long side direction and the short side direction of the floor structure 10 are provided. 9Y is not necessarily required, and may be omitted depending on the required size of the work floor 2.
As shown in FIG. 3 and FIG. 4, the two-way connection type column frame 8 is at least vertically moved by combining and welding angle steel bar (L-shaped angle material), flat bar (plate-shaped material), pipe material, etc. It is formed in a bowl shape so as to produce an opening penetrating in the direction. In the column frame 8, the opening penetrating in the vertical direction is slightly larger than the cross-sectional size of the foot column 3, and is formed as a column passage opening 13 that allows the foot column 3 to be inserted.

  This column frame 8 is for connection in which the protruding end of the pipe material is projected radially outward on a pair of opposing two side surfaces (left and right side surfaces in FIG. 3A) of the four outer peripheral side surfaces. A flange 14 is provided. The connecting flanges 14 are provided at four locations in a rectangular arrangement on each side surface of the column frame 8. Each connecting flange 14 is provided with a bolt through hole 14a for inserting a connecting bolt.

  The column frame 8 is provided with a pair of pin insertion portions 15 on a pair of opposing two side surfaces (the left and right side surfaces in FIG. 3A) among the four outer peripheral side surfaces. In the illustrated example, the pin insertion portion 15 is provided on the same side as the connection flange 14 is provided, but the pin insertion portion 15 is provided on a side surface different from the connection flange 14. It may be provided. Moreover, you may provide the pin insertion part 15 in all the four side surfaces.

The pin insertion portion 15 is a plate piece 15a provided so as to protrude upward from the column frame 8 and has a pin hole 15b formed by penetrating the plate thickness. The pin insertion portion 15 forms a pair. The lock pin 5 can be penetrated like a skewer between them. Therefore, the paired pin insertion portions 15 are provided in the same arrangement with respect to the opposing two side surfaces of the column frame 8 (so that the pin holes 15b are uniaxially arranged with each other).

In the present embodiment, the pin insertion portion 15 (plate piece 15 a) is connected to the outer frame portion of the column frame 8 with an oblique reinforcing material 16. With this reinforcing material 16, the pin insertion portion 15 has a strong proof stress (mechanical strength) against a load applied in the vertical direction.
As shown in FIG. 5, the four-way connection type column frame 8 is provided with connection flanges 14 on all four side surfaces of the outer periphery. In this case, the horizontal pitch and the vertical pitch of the four connecting flanges 14 each having a rectangular arrangement on each of the four side surfaces are made common to each other. Other configurations are substantially the same as those of the two-way connected column frame 8 (shown in FIGS. 3 and 4).

  By constructing the above-described floor structure 10 using such a column frame 8 and assembling it on the work floor 2, the work floor 2 is provided with a plurality of positions where the column passage openings 13 by the column frames 8 are separated from each other. It will be in the state where it is arranged and all pillar passage mouths 13 penetrate in the up-and-down direction. In addition, the work floor 2 is provided with a pair of pin insertion portions 15 that allow the lock pins 5 to be inserted in a skewered manner toward the foot pillars 3 inserted into the respective column passage openings 13. .

  As shown in FIG. 6 (see also FIG. 4), the foot column 3 may be a hollow or solid bar or the like assembled in a truss structure. It is preferable that the foot pillar 3 has a weight that can be handled manually. As a guide, if it is about 50 kg, it can be handled easily and safely by two workers, so this weight is set. As a specific example, a truss structure is adopted, the cross-sectional size is set to 340 mm × 450 mm, and the length is set to about 2200 mm.

  The foot pillar 3 is provided with a plurality of lock holes 23 along the height direction when it is built (= vertical direction = longitudinal direction). The lock hole 23 is provided as a pair on a pair of opposite two side surfaces (left and right side surfaces in FIG. 6A) among the four side surfaces on the outer periphery of the foot column 3. Further, these lock holes 23 are provided in the same arrangement (so that the lock holes 23 are uniaxially arranged) so as to penetrate in the thickness direction of the foot column 3.

The lock holes 23 are parallel to the foot pillars 3 in the height direction and are attached to the belt-like steel plates 24 by welding, and are provided in a row at regular intervals (for example, 200 mm pitch). It is. Naturally, this belt-shaped steel plate 24 is attached to two opposite side surfaces of the foot column 3 (see FIG. 4).
As shown in FIG. 7, even when the foot pillars 3 are connected to each other in the height direction, the mutual interval between the lock holes 23 adjacent to each other in the vertical direction between the connections is a lock set within one foot pillar 3. The distance between the holes 23 is the same.

In addition, when connecting the foot pillars 3 with each other in the height direction, it is preferable to fit a connecting tool 25 as shown in FIG. 8 between the foot pillars 3 (up and down).
If the hollow member (round pipe or the like) is used as the vertical member used in the height direction of the foot pillar 3, the connector 25 is formed in a round bar shape that fits in the hollow portion without rattling. The partition rods 26 are formed in a disk-like shape protruding at positions corresponding to each other (upper and lower) of the columns 3. Naturally, if a square pipe is used as the vertical member of the foot column 3, it may be formed in a square bar shape and the partition rod 26 may be projected in a square shape.

In order to allow the retaining pin to be inserted so as to penetrate the connecting tool 25 and the foot pillar 3 like a skewer when the connecting tool 25 is fitted into the upper end or the lower end of the foot post 3, It is preferable to provide a through hole 28 in 25 and an engagement hole 29 in the foot pillar 3 (see FIG. 6B).
For this reason, when the foot column 3 is inserted into the column passage opening 13 of the work floor 2 and built, and the work floor 2 is lifted (raised) to a predetermined height position, a pair on the work floor 2 side. The pin insertion portions 15 and 15 can be selectively and uniquely matched with the pair of lock holes 23 and 23 (at the same height position) on the foot pillar 3 side. Therefore, in this state, as shown in FIG. 2 and FIG. 4, the lock pin 5 is inserted so that the pin insertion portions 15 and 15 and the lock holes 23 and 23 penetrate like a skewer. The floor 2 can be fixed.

Even when the height of the work floor 2 is changed (moved up and down), the work floor 2 is operated with respect to the pair of lock holes 23 and 23 on the foot pillar 3 side provided at the height position where the work floor 2 should be fixed. The pair of pin insertion portions 15 on the floor 2 side can be selectively and uniquely matched. As a result, the work floor 2 can freely change and adjust the fixed height based on the pitch at which the lock holes 23 are provided in the height direction with respect to the foot column 3.

  The lock pin 5 is provided with an operation portion 30 having a ring shape or a spherical shape on one end side so that the pin insertion portions 15 and 15 and the lock holes 23 and 23 can be easily inserted and extracted. Good. In the present embodiment, the pin portion of the lock pin 5 is formed of a round pipe having a thickness of 10 mm and an outer diameter of 60 mm. In accordance with this, the inner diameters of the pin insertion portion 15 and the lock hole 23 are also slightly larger than 60 mm.

  As illustrated in FIG. 2, the pulling device 4 is a lever block (registered trademark), a chain block, or the like. The lifting device 4 has a working floor 2 as a hanging position at a position protruding upward from the work floor 2 with respect to each foot pillar 3 that has been built through the pillar passages 13 of the work floor 2 in the vertical direction. 2 is used to pull upward. As the pulling device 4, an electric winch or an electric hoist can be used. It is also possible to use a pulley apparatus including a moving pulley.

Next, an assembly method for the work scaffold 1 will be described.
As shown in FIG. 13A, the work floor 2 is assembled on the ground at the site. As described with reference to FIG. 9 and FIG. 10, the work floor 2 is assembled by first arranging the column frame 8 at a plurality of positions separated from each other at a predetermined interval and extending the column passage port 13 in the vertical direction. To do. Then, the column structures 8 are connected to each other by the beam material 9 with or without the connection block 12 to form the floor structure 10.

Here, if necessary, a reinforcing material (not shown) such as a joist pipe is bridged between necessary portions between the beam members 9, or a fall prevention net (not shown) is installed on the upper portion of the floor structure 10. That's fine.
When the installation position of the column frame 8 is determined in assembling the floor structure 10 in this manner, the position of the column passage opening 13, that is, the position where the foot pillar 3 is to be built is also determined.

  Therefore, as shown in FIG. 13B, a plurality of foot pillars 3 are built in an arrangement corresponding to each pillar passage opening 13. The foot pillar 3 may be built prior to the assembly of the floor structure 10 (work floor 2) (the foot pillar 3 is built with the pillar frame 8 inserted into the foot pillar 3). Or the assembly of the floor structure 10 may be followed (the foot pillar 3 is built into each pillar passage 13 of the floor structure 10). Alternatively, it may be performed in parallel (simultaneously) with the assembly of the floor structure 10.

  Furthermore, a master rope support 40 is attached to the floor structure 10 at a predetermined interval along the outer periphery, and a master rope 41 made of a resin rope, a wire rope, a metal chain or the like is laid between the master rope supports 40. I hand it over. As for the procedure for attaching the master rope support 40 and the bridge of the master rope 41, the assembly of the floor structure 10 and the construction of the foot pillar 3 and the front-and-rear relationship are not limited. In some cases, a safety fence may be attached instead of the master rope support column 40 and the master rope 41.

Next, assembly of the work floor 2 is completed by laying and fixing the base plate 11 on the upper portion of the floor structure 10 and fixing it. In order to lay the base plates 11, if the floor structure 10 is lifted from the ground to some extent, the operator can enter the work under the work floor 2 and work is easy and It can be done quickly.
Therefore, before carrying out the “work floor 2 lifting work” described below in full scale, it is necessary to lift the floor structure 10 slightly at this point (about 1 m above the ground) first. Preferred. Since the lifting of the floor structure 10 is the same as the “work for lifting the work floor 2” performed in earnest, the following description will be made on the “work for lifting the work floor 2”.

As shown in FIG. 13 (C), with respect to each foot pillar 3 built in a state of passing through each pillar passage 13 of the work floor 2 in the vertical direction, at an appropriate position on the upper side of the work floor 2, The pulling device 4 is hung and put into a suspended state (see FIG. 2). Further, the other side of the lifting device 4 (for example, a chain end that performs a lifting behavior such as a winding chain) is connected to the work floor 2 (the beam member 9 or the like).

At this time, the pulling device 4 is mounted with a plurality of units (two may be provided) per one foot column 3. When two lifting devices 4 are used, it is preferable to place the foot column 3 in the center so as to face each other.
When the lifting device 4 is attached to each foot column 3, each lifting device 4 is operated to pull up the work floor 2. When operating the lifting devices 4 attached to one foot column 3, the lifting devices 4 are simultaneously operated by the same number of workers as the number of the lifting devices 4 attached (that is, 1 It is preferable that at least one worker is in charge of the table lifting device 4).

Moreover, it is preferable to operate a plurality of lifting devices 4 attached to the plurality of foot pillars 3 arranged along the short side or the long side of the work floor 2 at the same time.
However, with respect to the plurality of foot pillars 3 arranged along the short side of the work floor 2 and the plurality of foot pillars 3 arranged along the long side of the work floor 2, a large number of them attached to them. The pulling device 4 does not have to be operated all at once.

That is, the lifting device 4 is operated only on one side of the short side or the long side of the work floor 2 to pull up the work floor 2 in an inclined manner, and then the lifting device is set on one side of the other side of the work floor 2. The operation of each lifting device 4 is not hindered by operating 4 and pulling up so that the work floor 2 is horizontal.
The work floor 2 is pulled up step by step by operating the lifting device 4, but each time the operation of the lifting device 4 is completed by one step, the pair of pin insertion portions 15 and 15 on the work floor 2 side and the foot pillar 3 side The pair of lock holes 23 and 23 (at the same height) are matched, and in this state, as shown in FIGS. 2 and 4, the pin insertion portions 15 and 15 and the lock holes 23 and 23 are skewered. The lock pin 5 is penetrated in the penetration direction, that is, the thickness direction of the foot pillar 3. As a result, both end portions of the lock pin 5 engage with the pin insertion portion 15 of the work floor 2 so that the work floor 2 never falls and the work floor 2 can be fixed to the foot pillar 3.

In this way, in the process of raising the work floor 2, the initial stage of raising the work floor 2 (after raising the floor structure 10 about 1 m from the ground, the base plate 11 is laid and the work floor 2 is At the stage of completion), a foot column 3 for addition and a reinforcing bar 42 are loaded on the work floor 2 as necessary.
Then, as shown in FIG. 14A, the work floor 2 is pulled up to a predetermined height with respect to the foot column 3. When the installation height of the work floor 2 is further increased, as shown in FIG. 14 (B), the foot pillar 3 previously loaded on the work floor 2 is replaced with the upper part of the foot pillar 3 already built. A lifting device 4 is attached between the added foot column 3 and the work floor 2 in the same manner as described above. And the operation | work of raising the work floor 2 in the same procedure as the above is repeated.

  As described above, when the installation height of the work floor 2 is increased to some extent, it is preferable to bridge the reinforcing bar 42 between the adjacent pillars 3. The reinforcing bar 42 may be a hollow or solid bar or the like assembled in a truss structure, or may be an H-shaped steel, a square pipe, a round pipe, a bar, or the like. For attachment to the foot pillar 3, the end of the reinforcing bar member 42 is connected to the foot pillar 3 in a state where the reinforcing bar member 42 is suspended from the work floor 2 by a suspension rope 43 such as a wire rope. . At this time, the worker performs work by hooking a safety block (not shown, which is a traction device for preventing falling) on the work floor 2.

In addition, you may make it attach the brace 45 (refer FIG. 1) between the adjacent pillars 3 as needed.
As described above, in the work scaffold 1 and the assembly method thereof according to the present invention, the assembly and disassembly can be performed simply, quickly, and safely only by the manual operation of the operator without using a heavy machine such as a crane. And there exists an advantage which can provide the work floor 2 of a large area in a high place position. In addition, a wide space can be formed below the work floor 2 (between the foot pillars 3), and the space below the work floor 2 can be used for another work or as a place for equipment or vehicles. There is also an advantage that can be utilized.

In the work scaffold 1 according to the present invention, it is possible to fix at the site where the assembly work is performed, but between the site where the assembly work is performed and a site (actual installation site) which is a predetermined distance away. It can also be constructed to be movable.
In order to make the work scaffold 1 movable in this manner, as shown in FIG. 15A, a rail track 50 is laid in advance on the ground, and a carriage 51 that moves on the rail track 50 is used as a basis. The work floor 2 is assembled and the foot column 3 is built. In addition, in order to make it easy and safe to mount the foot pillar 3 on the carriage 51, the bottom foot pillar 3 fixed on the carriage 51 has a small height (short in the vertical direction). Should be used.

The work scaffold 1 assembled in this way is movable along the rail track 50 as shown in FIG. The movement of the work scaffold 1 can be sufficiently performed even by human power by the worker.
Instead of the rail track 50 and the carriage 51, a traveling device (not shown) provided with wheels and rollers may be attached to the lower end of the foot column 3.

The present invention is not limited to the embodiment described above, and can be changed as appropriate according to the embodiment.
For example, the configuration of the work floor 2 and its assembly procedure are not limited at all. Needless to say, when the work floor 2 is enlarged, a plurality of floor structures 10 shown in FIGS. 9 and 10 may be connected in a plane.

The lock pin 5 can be replaced with a bolt or the like.
When more than two foot pillars 3 are built on one side of the work floor 2, the pulling device 4 may be attached to the foot pillars 3 at both ends. However, the lifting device 4 may be attached to the intermediate foot column 3 as well.
When the lifting device 4 is attached to each foot pillar 3, each lifting device 4 may be operated individually when operating each lifting device 4 to pull up the work floor 2. In some cases, the plurality of lifting devices 4 attached to one foot column 3 may also be operated separately (at different timings).

  The work scaffold 1 and its assembly method according to the present invention are characterized in that they can be assembled and disassembled manually by an operator without using a heavy machine such as a crane. However, it is not intended to exclude the use of heavy machinery, and there is room for space on the site, and when heavy machinery is provided at the site, assembly and disassembly using heavy machinery may be performed.

DESCRIPTION OF SYMBOLS 1 Work scaffold 2 Work floor 3 Foot column 4 Lifting device 5 Lock pin 8 Column frame 9 Beam material 9X Beam material 9Y Beam material 10 Floor structure 11 Base plate 12 Connection block 13 Column through-hole 14 Connection flange 14a Bolt hole 15 Pin insertion portion 15a Plate piece 15b Pin hole 16 Reinforcement material 23 Lock hole 24 Strip steel plate 25 Connector 26 Partition rod 28 Through hole 29 Engagement hole 30 Operation part 40 Parent rope support 41 Parent rope 42 Reinforcement material 43 Strip 45 Brace 50 rail track 51 trolley

Claims (5)

A work floor that is assembled in a state where the column through holes penetrating in the vertical direction are arranged at a plurality of locations separated from each other;
A plurality of foot pillars built in an arrangement corresponding to each pillar opening of the work floor;
A pulling device that lifts the work floor upward with the upper side as the hanging position from the work floor of each foot pillar that is built through the column through-holes of the work floor in the vertical direction;
A lock pin for penetrating the foot pillar in the thickness direction in the through-hole of the work floor pulled up by the lifting device and engaging both ends with the work floor side;
A working scaffold characterized by having The work floor is provided with a pair of pin insertion portions that allow the lock pin to penetrate in a skewered manner toward the foot pillar in the pillar passage opening,
The foot pillar is provided with a plurality of lock holes arranged in the vertical direction penetrating in the thickness direction of the foot pillar in a state that can selectively match with a pair of pin insertion portions provided in the pillar passage opening. The work scaffold according to claim 1, wherein The work floor is
A pillar frame that is formed in a bowl shape and has a pillar passage for the foot pillar formed therein;
A plurality of beam members interconnecting adjacent column frames arranged to correspond to the respective foot pillars;
The work scaffold according to claim 1, further comprising a base plate laid on top of a floor structure configured using the column frame and the beam material. While assembling the work floor in a state where the column through holes penetrating in the vertical direction are arranged at a plurality of locations separated from each other,
Prior to assembling the work floor, following, or in parallel, install a plurality of foot pillars in an arrangement corresponding to each pillar passage opening of the work floor,
The lifting device is suspended from the working floor of each foot pillar built in a state where it passes through the pillar passage openings of the working floor in the vertical direction, and the lifting device is connected to the working floor. And
Pulling up the working floor with respect to each foot column by the lifting device,
The both ends of the lock pin are engaged with the work floor side by penetrating the lock pin in the thickness direction in the thickness direction with respect to the foot pillar in the through hole of the work floor pulled up by the lifting device. An assembly method for working scaffolds characterized by this.   5. The work scaffold assembly method according to claim 4, wherein a plurality of the lifting devices are attached to each of the foot pillars so that the lifting force of the work floor is generated in each of the different lifting devices.

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