JPH0447091B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is mainly concerned with a system for suspending a bridge from a girder flange or other structural material in order to perform backside work such as inspection, painting, and repair of bridges and other structures. The present invention relates to a two-way deployable scaffolding floor assembly used in

[Prior art]

Mobile suspended scaffolding used when working behind the scenes of bridges and other structures requires a considerable amount of floor space, so it is not possible to load the entire floor assembly onto a truck or trailer and transport it to the site. , is impossible or extremely uneconomical. Therefore, conventionally, the subdivided floor assembly structural members and other components were delivered to the site, and then (1) a mobile scaffold was assembled on the ground below the girder, and then the scaffold was hoisted to the back of the girder; or (2) assembling a movable scaffold on temporary scaffolding under the girder and attaching it directly to the back of the girder.

[Problem that the invention seeks to solve]

However, in both cases (1) and (2) above, a fairly large work space is required under the girder, and it takes a considerable amount of time to assemble and install the mobile scaffolding, so the space under the girder is close to the road. In some cases, there was a problem in that it caused long-term problems with traffic.

[Purpose and structure of the invention]

The object of this invention is to provide a two-way deployable scaffolding floor assembly that can advantageously solve the above-mentioned problems. and a plurality of fixed vertical floor beams 2 are combined to form a fixed floor beam structure 3, and the primary drawer horizontal beams 4, which are slidably fitted into each of the fixed horizontal floor beams 1, are connected to each other. Drawer horizontal floor beam 4
A movable vertical floor beam 5 extending in a direction intersecting the longitudinal direction of the primary drawer vertical floor beam 5 is constructed, and the primary drawer vertical floor beam 6 is slidably inserted into each of the fixed vertical floor beams 2. A movable horizontal floor beam 7 extending in a direction intersecting the longitudinal direction of 6 is constructed, and a secondary drawer vertical floor beam 8 is slidably inserted into the movable vertical floor beam 5.
The two-way deployable scaffolding floor assembly is characterized in that a secondary drawer horizontal beam 9 is slidably fitted into the movable horizontal beam 7.

〔Example〕

Next, the present invention will be explained in detail using illustrated examples.

1 to 21 show a first embodiment in which the present invention is applied to a mobile suspended scaffold, in which square steel pipes are used as each floor beam member, and the primary drawer horizontal floor beam 4 and the primary drawer vertical This is an embodiment in which the floor beam 6 is made into a multi-stage telescoping type and inserted into a fixed horizontal floor beam and a fixed vertical floor beam.

To explain the first embodiment, a plurality of (two in the illustrated case) fixed horizontal floor beams 1 made of square steel pipes extending in the horizontal direction (left-right direction) are arranged at intervals in the vertical direction (front-back direction). A large number (six in the illustrated case) of fixed vertical floor beams 2 made of square steel pipes extending vertically are arranged at intervals in the horizontal direction at the lower part of the fixed horizontal floor beam 1. The floor beam 1 and each fixed vertical floor beam 2 are connected by welding or the like to form a fixed floor beam structure 3, and this fixed floor beam structure 3
A floor slab 10 is installed and fixed in advance on the upper surface of the deck.

A first stage drawer horizontal floor beam 4A, a second stage drawer horizontal floor beam 4B, a third stage drawer horizontal floor beam 4C and a fourth stage drawer horizontal floor beam 4D made of square steel pipes are slidably inserted into each other. , a primary drawer horizontal floor beam 4 is constructed, in which a first stage drawer horizontal beam 4A of the primary drawer horizontal beam 4 is slidably inserted into each of the fixed horizontal beams 1, and a first drawer horizontal beam 4A made of a square steel pipe is constructed. Tier drawer vertical floor beam 6A, second stage drawer vertical floor beam 6
B and the third stage drawer vertical floor beam 6C are slidably inserted into each other to constitute the primary drawer vertical floor beam 6, and the first stage of the primary drawer vertical floor beam 6 is attached to each of the fixed vertical floor beams 2. A drawer vertical floor beam 6A is slidably inserted.

A first stage movable vertical floor beam 5A is constructed across the lower tip of each of the first stage drawer horizontal floor beams 4A and fixed by welding or the like, and each second stage drawer horizontal floor beam 4B is constructed across the lower tip of the first stage drawer horizontal floor beam 4B. A two-stage movable vertical floor beam 5B is constructed and fixed by welding or the like, and a third-stage movable vertical floor beam 5C is installed across the lower end of each third-stage drawer horizontal floor beam 4C.
is constructed and fixed by welding or the like, and furthermore, a fourth stage movable vertical floor beam 5D is constructed across the lower end of each fourth stage drawer horizontal floor beam 4D and is fixed by welding or the like. In addition, a first stage movable horizontal floor beam 7A is constructed across the top of the tip of each of the first stage drawer vertical floor beams 6A and fixed by welding, etc. Then, a second-stage movable horizontal floor beam 7B is constructed and fixed by welding or the like, and a third-stage movable horizontal floor beam 7C is constructed over the top of each third-stage vertical drawer beam 6C and fixed by welding or the like. Fixed.

The first stage drawer vertical floor beam 8A, the second stage drawer vertical floor beam 8B and the third stage drawer vertical floor beam 8C made of square steel pipes are slidably inserted into each other, and the secondary drawer vertical floor beam 8 is formed. The first stage drawer vertical floor beam 8A of the secondary drawer vertical floor beam 8 is slidably inserted into the movable vertical floor beams 5A to 5D of the first to fourth stages. A first-stage drawer cross-beam 9A, a second-stage drawer cross-beam 9B, a third-stage drawer cross-beam 9C, and a fourth-stage drawer cross-beam 9D, which are made of steel pipes, are slidably inserted into each other to form a secondary drawer. The drawer horizontal floor beam 9 is configured, and the first stage drawer horizontal floor beam 9A in the secondary drawer horizontal floor beam 9 is slidably inside the first to third stage movable horizontal floor beams 7A to 7C. It is inserted.

In the slidable insertion portion of the corner horizontal beam and the slidable insertion portion of each vertical beam, the upper and lower inner surfaces of the tips of the outer horizontal beam and vertical beam are coated with ethylene tetrafluoride. A sliding material 11 made of tetrafluoroethylene is fixed with an adhesive or the like, and a sliding material 12 made of tetrafluoroethylene is fixed on the upper and lower outer surfaces of the base ends of the inner horizontal and vertical beams with an adhesive or the like, When you pull out the inner horizontal and vertical beams by the specified length,
The ends of each sliding member 11, 12 abut against each other and are prevented from being pulled out any further. In this state, as shown in FIGS. 10 and 11, the insertion portion of the horizontal floor beam and the vertical floor beam A lock pin 15 is inserted across the pin holes 13 and 14 of the fitting portion.

When constructing a movable scaffold on a bridge girder using the scaffolding floor assembly 16 configured as described above, first, as shown in FIGS. 16 and 17, pulleys 17 are installed.
A plurality of clamps 19 supporting the pier and having tightening bolts 18 are attached to the lower flanges of the two girders 20 near the piers using boom vehicle scaffolding or other simple temporary scaffolding, and As shown in FIGS. 1 to 3, the assembly 16 is transported to the site in a reduced state, and then unwound from a hoisting device 21 such as a plurality of electric winches fixed to the fixed floor beam structure 3. A strip 22 such as a rope is connected to the pulley 1
7 and connected to the fixed floor beam structure 3, each hoisting device 21 is operated to lift the scaffold floor assembly 16.

After the scaffolding floor assembly 16 has been lifted to a predetermined height, a worker climbs onto the scaffolding floor assembly 16 from the pier and moves along the lower part of the two girders 20, as shown in FIGS. 18 and 20. A temporary rail 23 extending along the girder 20 is fixed to the lower flange of the girder 20 by a plurality of clamps 25 having tightening bolts 24,
In addition, the lower portions of the plurality of suspended traveling devices 26 having traveling wheels placed on the temporary rails 23 are connected to the fixed floor beam structure 3 by bolts or the like, and four or more parts of the fixed floor beam structure 3 are connected. is suspended and supported by a temporary rail 23 via a suspended traveling device 26, and then the strip 22 is relaxed and the clamp 1 is
Remove 9 from digit 20. Note that a floor slab 10 is installed and fixed on the fixed floor beam structure 3 in advance.

Next, the rope 28 being let out from the pull-out winch 27 fixed to the fixed floor beam structure 3 is wound around a pulley 29 detachably attached to the girder 20 located away from the scaffolding floor assembly 16 to the right. The rope 28 is connected to the fourth stage movable vertical floor beam 5D, and the drawer winch 27 is operated in the rope winding direction to move the fourth stage movable vertical floor beam 5D to the right side (in the direction of arrow J in FIG. 1). or a worker on the floor slab of the fixed floor beam structure 3 presses the fourth stage movable vertical floor beam 5D with the push rod 30 to move the fourth stage movable vertical floor beam 5D.
Press and move to the right.

In this way, the fourth stage drawer horizontal floor beam 4D fixed to the fourth stage movable vertical floor beam 5D is pulled out from the third stage drawer horizontal floor beam 4C, and the secondary drawer vertical floor beam 8 The fourth stage drawer horizontal floor beam 9D fixed to is pulled out from the third stage drawer horizontal floor beam 9C. As shown in Figure 5, the 4th stage drawer horizontal floor beam 4D
When the fourth stage drawer horizontal beam 9D is pulled out by a predetermined length, the fourth stage drawer horizontal beam 4D and the sliding material 12 on the outer surface of the proximal end of the fourth stage drawer horizontal beam 9D move to the third stage. It engages with the sliding material 11 on the inner surface of the tip of the drawer horizontal floor beam 4C and the third stage drawer horizontal floor beam 9C, and then the third stage moving vertical floor beam 5C and the secondary drawer vertical floor beam 8 fitted therein. is moved to the right side, and the third stage moving vertical floor beam 5
The third stage drawer horizontal floor beam 4C fixed to the second
At the same time as the third stage drawer horizontal floor beam 4B is pulled out, the third stage drawer horizontal floor beam 9C fixed to the secondary drawer vertical floor beam 8 is pulled out from the second stage drawer horizontal floor beam 9B, and so on. , the second stage movable vertical floor beam 5B, the secondary drawer vertical floor beam 8 fitted therein, the second stage drawer horizontal floor beam 4B, and the second stage drawer horizontal floor beam 9B,
A first stage movable vertical floor beam 5A, a secondary drawer vertical floor beam 8 fitted therein, and a first stage drawer horizontal floor beam 4A,
The first stage drawer horizontal floor beam 9A is successively pulled out.

The drawer horizontal beams 4A to 4D of each stage forming the primary drawer horizontal beam 4 and the drawer horizontal beams 9A to 9D of each stage forming the secondary drawer horizontal beam 9 are pulled out by a predetermined length, After the horizontal drawing is completed, keep the rope 28 under tension and insert the lock pin 15 into the fitting part between the tip of the outer drawer cross beam and the base end of the inner drawer cross beam. , and a floor slab 31 is constructed on the floor assembly of the pulled-out portion.

Next, a worker gets on the floor slab on the floor assembly of the part that has been pulled out in the lateral direction, and as shown in FIG. A plurality of suspended traveling devices 26 having traveling wheels fixed to the lower flange of the girder 20 by a plurality of clamps 25 having tightening bolts 24 and placed on a temporary rail 23 are pulled out laterally at the lower part. After connecting the floor assembly with bolts or the like and suspending and supporting the horizontal extension portion of the fixed floor beam structure 3 via the suspension type traveling device 26 from the temporary rail 23, the drawer winch 27 and pulley 29 are connected to the floor assembly using bolts or the like. Remove.

When pulling out the fixed floor beam structure 3 in the vertical direction, as shown in FIG. The lower part of the moving device 32 is connected in the vertical direction (arrow K in FIG. direction), or by a worker on the floor slab pressing the third stage movable horizontal floor beam 7C and the secondary drawer horizontal floor beam 9 fitted therein with the push rod 30. The third stage moving horizontal floor beam 7C and the secondary drawer horizontal floor beam 9 are moved in the direction of arrow K in FIG. The three-stage drawer vertical floor beam 8C is pulled out from the second-stage drawer vertical floor beam 8B.

Next, a lock pin 15 is attached to the fitting portion between the third-stage drawer vertical beam 6C and the second-stage drawer vertical beam 6B, and the fitting portion between the third-stage drawer vertical beam 8C and the second-stage drawer vertical beam 8B.
After this, the floor slab 31 is erected on the floor assembly that is pulled out in the vertical direction.

Next, the second-stage moving horizontal floor beam 7B and the secondary drawer horizontal floor beam 9 fitted therein are also supported by the temporary rails 23 via the traveling devices 32, and then each traveling device 32 is moved in the direction of arrow K. By running or other means, move the third-stage moving horizontal floor beam 7C and the secondary drawer horizontal floor beam 9 fitted therein to the arrow K.
By pressing in the direction, the third stage moving horizontal beam 7
C. Move the second stage moving horizontal floor beam 7B and the secondary drawer horizontal floor beam 9 fitted therein in the direction of arrow K, and move the second stage drawer vertical floor beam 6B to the first stage drawer vertical floor beam At the same time, the second stage drawer vertical floor beam 8B is pulled out from the first stage drawer vertical floor beam 8A.

Next, the second stage drawer vertical floor beam 6B and the first stage vertical floor beam 6A
After fitting and inserting the lock pin 15 into the fitting part between the second-stage drawer vertical floor beam 8B and the first-stage drawer vertical floor beam 8A, attach the floor slab to the newly pulled out vertical floor assembly. 31 will be erected.

Next, the movable horizontal floor beam 7 and the secondary drawer horizontal beam 9 fitted therein are also supported by the temporary rails 23 via the traveling devices 32, and each traveling device 3
2 in the direction of arrow K, or by pressing the third stage moving horizontal beam 7C and the secondary drawer horizontal beam 9 fitted therein in the direction of arrow K. Moving horizontal floor beams 7A to 7
C and the secondary drawer horizontal floor beams 9 fitted thereto are moved in the direction of arrow K, and the first stage drawer vertical floor beams 6A are pulled out from the fixed vertical floor beams 2, and the movable vertical floor beams of each stage are moved. 1st stage drawer vertical floor beam 8A from 5A to 5D
Pull out.

Next, the fitting parts of the fixed vertical floor beam 2 and the first stage drawer vertical floor beam 6A, and the movable vertical floor beams 5A to 5D of each stage and the first
After the lock pin 15 is inserted into the fitting part with the vertical floor beam 8A of the step drawer, the floor slab 31 is erected on the newly drawn out floor assembly in the vertical direction.

As the scaffolding floor assembly 16 is pulled out in the vertical direction and the floor slab is erected, temporary rails 23 are added and protruded.

As shown in FIG. 12, after completing the vertical and horizontal expansion of the scaffolding floor assembly 16 and the erection of the floor slab 31, a worker on the floor slab installs a large number of supports 33 around the scaffolding floor assembly 16 using bolts or the like. A safety fence panel 34, which is detachably fixed and has fitting grooves at both ends, is fitted and locked across adjacent pillars 33 by falling.

Note that before the scaffold floor assembly 16 is deployed in the vertical and horizontal directions, the safety fence panels 34 are fitted and locked in the parts where the safety fence panels 34 can be fitted and locked in advance, and the safety fence panels 34 are fitted and locked in advance. In areas where fitting and locking is not possible, only the columns 33 are fixed around the scaffolding floor assembly 16, and after the scaffolding floor assembly 16 has been deployed in the vertical and horizontal directions, the safety fence panels 34 are fitted and locked between the columns. preferable.

When the pulley 17 and clamp 19 used for lifting the scaffolding floor assembly 16 do not interfere with the movement of the moving scaffold, leave the clamp 19 attached to the girder 20 and remove the moving scaffold from the girder. At this time, the scaffolding floor assembly 16 is lowered using the pulley 17.

22 to 30 show a second embodiment of the present invention, in which three fixed horizontal floor beams 1 made of square steel pipes extending in the horizontal direction are spaced apart in the vertical direction (front-back direction). A large number of square steel pipes (six in the case shown) arranged vertically and extending vertically.
The fixed longitudinal floor beams 2 are spaced laterally at the bottom of the fixed horizontal floor beams 1, and each fixed horizontal floor beam 1
and each fixed vertical floor beam 2 are connected by welding or the like,
A fixed floor beam structure 3 is constructed, and a floor slab (not shown) is erected and solidified on the upper surface of the fixed floor beam structure 3.

Primary drawer cross beams 4 made of steel pipes are slidably inserted into each of the fixed horizontal beams 1, and a primary drawer cross beam 4 made of square steel pipes extending vertically at the bottom of each primary drawer cross beam 4 is slidably inserted into each of the fixed horizontal beams 1. 1st stage moving vertical floor beam 5A, 2nd stage moving vertical floor beam 5
B, the third stage moving vertical floor beam 5C and the fourth stage moving vertical floor beam 5D are arranged, and the first to third stage moving vertical floor beams 5A
~ 5C, a downward opening groove-shaped slide fitting 35 is slidably fitted to each primary drawer horizontal floor beam 4.
are fixed by welding, and the fourth stage movable vertical beam 5D is fixed to the tip of each primary drawer horizontal beam by welding or the like.

Each fixed vertical floor beam 2 in the fixed floor beam structure 3
Primary drawer vertical floor beams 6 on both sides of the longitudinal direction (back and forth direction)
A movable horizontal floor beam 7 made of a rectangular steel pipe that is slidably inserted and extends laterally is constructed across the tip of each horizontally adjacent primary drawer vertical beam 6, and fixed by welding or the like. Secondary drawer vertical floor beams 8 made of square steel pipes are slidably inserted into both vertical sides of the first to fourth stage movable vertical floor beams 5A to 5D, and A secondary drawer horizontal floor beam 9 made of a square steel pipe is slidably fitted into the floor beam 7.

A downwardly opening groove-shaped slide fitting 36 into which a secondary drawer horizontal floor beam 9 is slidably fitted is fixed by welding to the top end of each secondary drawer vertical floor beam 8, and the fourth stage moving vertical floor The tip of the secondary drawer vertical beam 8 fitted into the beam 5D is fixed to the tip of the secondary drawer horizontal beam 9 by welding or the like, and the slide fitting 3
Fixing bolts 39 and 40 are screwed into nuts 37 and 38 fixed to the upper parts of the respective primary drawer horizontal floor beams 4 and each of the secondary drawer horizontal floor beams 9. Through-holes 41 and 42 for bolt insertion are provided at positions that approximately divide the distance between the fixed floor beam structure 3 and the fourth stage movable vertical floor beam 5D into four equal parts when the stroke is pulled out, but other The configuration is similar to that of the first embodiment.

The procedures for transporting, lifting, attaching, pulling out, floor slab installation, incidental work, etc. of the scaffolding floor assembly in the second embodiment are almost the same as in the first embodiment, but are different from the first embodiment. Let me explain the points.

In the case of the second embodiment, the main purpose is to avoid multi-stage insertion so as not to use members with very small cross-sectional dimensions. When the set 16 is reduced in size, the dimensions in the longitudinal direction are larger than those in the first embodiment, but as long as the dimensions are within the range that can be loaded on a normal truck, there is no practical problem.

The cross-sectional dimensions of the primary drawer horizontal beam 4 and the secondary drawer horizontal beam 9 are of one type, and the end of the fixed vertical beam 2 slightly protrudes from the fixed horizontal beam 1 in the vertical direction, and the movement of each step The reason why the end portions of the vertical floor beams 5A to 5D slightly protrude from the primary drawer horizontal floor beam 4 in the vertical direction is to ensure the strength of their overlapped joints.

When deploying the scaffolding floor assembly 16 laterally, first move the primary drawer horizontal beam 4 and the secondary drawer horizontal beam 9 to the
After pulling out the stage to a predetermined position, the third stage movable vertical floor beam 5C and the secondary drawer vertical floor beam 8 fitted therein are fixed to the primary drawer horizontal floor beam 4 and the secondary drawer horizontal floor beam 4 by fixing bolts 39, 40. After fixing the drawer horizontal floor beam 9 at a predetermined position, and then pulling out the primary drawer horizontal floor beam 4 and the secondary drawer horizontal floor beam 9 to the predetermined position of the second stage,
The second stage movable vertical floor beam 5B and the secondary drawer vertical floor beam 8 fitted therein are fixed with the fixing bolts 39, 40.
The primary drawer horizontal floor beam 4 and the secondary drawer horizontal floor beam 9 are
is fixed at a predetermined position, and then the primary drawer horizontal floor beam 4 and the secondary drawer horizontal floor beam 9 are pulled out to the predetermined position of the third stage, and then the first stage movable vertical floor beam 5A and the The secondary drawer vertical floor beam 8 is fixed to a predetermined position of the primary drawer horizontal floor beam 4 and the secondary drawer horizontal floor beam 9 using fixing bolts 39 and 40.

After completing the horizontal drawing, each primary drawer vertical beam 6 is pulled out from the fixed vertical beam 2, and the secondary drawer vertical beam 8 is pulled out from the movable vertical beams 5A to 5D, and the secondary drawer vertical beam The beams 8 are pulled out from the movable vertical floor beams 5A to 5D, and the expansion of the drawers in the vertical and horizontal directions is completed as shown in FIG.

In the case of the second embodiment as well, the floor slab is erected and fixed on the fixed floor beam structure 3 from the beginning, and the floor slabs of other parts of the scaffolding floor assembly 16 are installed as the scaffolding floor assembly 16 is pulled out and expanded. Erection and fixing will be carried out accordingly.

In each of the above embodiments, square steel pipes are used as the vertical and horizontal beams, but the cross-sectional shapes of the vertical and horizontal beams may be circular or any other arbitrary shape. The material of the transverse floor beams may be aluminum or other suitable material.

In the case of the second embodiment, the drawer may be configured to be expanded only in one direction in the front and rear directions. In addition, the intersecting angle between the vertical floor beam and the horizontal floor beam does not have to be a right angle, and there is a mutually slidable support structure between the vertical floor beams, a mutually slidable support structure between the horizontal floor beams, a pull-out restriction stopper, a floor Any structure other than that shown in the drawings may be used as the structure for connecting the beams.

When lifting the scaffolding floor assembly 16, the scaffolding floor assembly 16 may be lifted by a hoisting device fixed to a part other than the scaffolding floor assembly. Further, the present invention can also be implemented on fixed suspended scaffolds.

〔Effect of the invention〕

According to this invention, a plurality of fixed horizontal floor beams 1 and a plurality of fixed vertical floor beams 2 which intersect with each other are combined to constitute a fixed floor beam structure 3, and each of the fixed horizontal floor beams 1
The primary drawer horizontal floor beam 4 is slidably inserted into the
A movable vertical floor beam 5 extending in a direction intersecting the longitudinal direction of the primary drawer horizontal floor beam 4 is installed on the primary drawer horizontal floor beam 4, and the primary drawer vertical floor beam 5 is slidably inserted into each of the fixed vertical floor beams 2. 6, a movable horizontal floor beam 7 extending in a direction intersecting the longitudinal direction of the primary drawer vertical floor beam 6 is constructed, and a secondary drawer vertical floor beam 8 is slidably inserted into the movable vertical floor beam 5. At the same time, the secondary drawer horizontal beam 9 is slidably inserted into the movable horizontal beam 7, so when transporting the scaffolding floor assembly 16, the scaffolding floor assembly 16 can be shortened from two directions. Therefore, the scaffolding floor assembly 16 can be loaded onto a truck and transported to and from a relatively narrow site, and furthermore, the scaffolding floor assembly 16 can be hoisted in a reduced state and supported by the girders 20. By pulling out and deploying the scaffolding floor assembly 16 in two directions, effects such as being able to easily install the scaffolding floor assembly 16 over a wide area in a short time can be obtained.

[Brief explanation of the drawing]

1 to 21 show a first embodiment of the present invention, in which FIG. 1 is a plan view showing a scaled-down scaffolding floor assembly, and FIG. 2 is taken along line A-A in FIG. 1. Figure 3 is an enlarged sectional view taken along the line B-B in Figure 1, Figure 4 is an enlarged plan view of the upper right corner of Figure 1, and Figure 5 is a cross-sectional view of the scaffolding floor set horizontally by one level. FIG. 6 is a plan view showing the state in which the drawers are expanded; FIG.
The figure is an enlarged sectional view taken along line C-C in Figure 6, and Figure 8 is an enlarged cross-sectional view of Figure 6.
Figure 9 is an enlarged cross-sectional view taken along the line D-D in the figure, Figure 9 is a cross-sectional view showing a slidable support structure for floor beams that are inserted into each other, and Figure 10 is a cross-sectional view showing a connecting structure for floor beams that are inserted into each other. 11 is a sectional view taken along line E-E in FIG. 10,
Figure 12 is a plan view showing the floor slab installed on the scaffolding floor assembly that has been pulled out in two directions, and Figure 13 is a plan view showing the safety fence panel being fitted and locked between the columns fixed to the scaffolding floor assembly. Fig. 14 is a side view, Fig. 15 is a plan view showing the safety fence panel fitted and locked between the supports, and Fig. 16 is the scaffolding floor assembly facing the girder. Fig. 17 is a schematic front view showing the hoisted state, Fig. 18 is a schematic front view showing the state when the scaffolding floor assembly is pulled out laterally, and Fig. 19 is a lateral view of the scaffolding floor assembly. Fig. 20 is a schematic side view showing the state when the scaffolding floor assembly is extended in the vertical direction; Fig. 21 is a schematic front view showing the state in which the directional drawer expansion is completed; Fig. 21 is a schematic side view showing the state when the scaffolding floor assembly is extended in the vertical direction. FIG. 22 to 30 show a second embodiment of the present invention, in which FIG. 22 is a plan view showing a scaled-down scaffolding floor assembly, and FIG. 23 is taken along the line FF in FIG. 22. 24 is a sectional view taken along the line G-G in Figure 22, Figure 25 is an enlarged plan view of the upper right corner of Figure 22, and Figure 26 is a state in which the two-way drawer expansion of the scaffolding floor assembly has been completed. Fig. 27 is a plan view showing the connecting part between the primary drawer horizontal floor beam and the movable vertical floor beam;
The figure is a vertical sectional front view, and Figure 29 is H- of Figure 27.
The H-line sectional view and FIG. 30 are sectional views showing the connecting portion between the secondary drawer vertical beam and the secondary drawer horizontal beam. In the figure, 1 is a fixed horizontal floor beam, 2 is a fixed longitudinal floor beam, 3 is a fixed floor beam structure, 4 is a primary drawer horizontal floor beam,
5 is a moving vertical floor beam, 6 is a primary drawer vertical floor beam, 7 is a moving horizontal floor beam, 8 is a secondary drawer vertical floor beam, 9 is a secondary drawer horizontal floor beam, 10 is a floor slab, 11 and 12 are sliding Moving materials, 15
is a lock pin, 16 is a scaffolding floor assembly, 17 is a pulley, 1
9 is a clamp, 20 is a girder, 21 is a hoisting device, 22
is a strip, 23 is a temporary rail, 25 is a clamp, 2
6 is a suspended traveling device, 27 is a drawer winch, 2
8 is a rope, 29 is a pulley, 30 is a push rod, 31 is a floor slab, 32 is a traveling device, 35 and 36 are slide fittings, and 39 and 40 are fixing bolts.

Claims (1)

[Claims] 1 A fixed floor beam structure 3 is constructed by combining a plurality of fixed horizontal floor beams 1 and a plurality of fixed vertical floor beams 2 that intersect with each other, and is slidably inserted into each of the fixed horizontal floor beams 1. A movable vertical floor beam 5 extending in a direction intersecting the longitudinal direction of the primary drawer horizontal floor beam 4 is installed on the primary drawer horizontal floor beam 4, and is slidably inserted into each of the fixed vertical floor beams 2. A movable horizontal floor beam 7 extending in a direction intersecting the longitudinal direction of the primary drawer vertical floor beam 6 is installed on the primary drawer vertical floor beam 6, and a secondary drawer vertical floor beam 8 is installed on the movable vertical floor beam 5. A two-way deployable scaffolding floor assembly characterized in that a secondary drawer horizontal beam 9 is slidably inserted into the movable horizontal beam 7.