JP2015209709A - Built-up type attachable-detachable scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a built-up type attachable-detachable scaffold capable of easily assembling and installing a work scaffold used when manufacturing a concrete product,in a form for the product.SOLUTION: In a built-up type attachable-detachable scaffold, a scaffold installing channel is fixed in the longitudinal direction to an outside wall of a form, and an engaging hole is bored in a sidewall of the channel, and a scaffold support arm is detachably engaged-projected in a plurality at a constant interval in the engaging hole, and a scaffold plate is removably placed-fixed between the arms by predetermined fixation means, and a handrail frame is detachably erected in a predetermined place of the scaffold plate, and the other side edge of the downward bent scaffold plate and an engaging part formed in a tip part of the scaffold support arm are engaged as the fixation means for fixing the scaffold plate, and one side edge of the downward bent scaffold plate and an installation plate added in the longitudinal direction to the scaffold support arm are integrally continuously provided-fixed by a fixing bolt.

Description

  The present invention relates to an assembly-type detachable scaffold, and more particularly to a structure of a work scaffold detachably attached to a concrete product manufacturing formwork.

Conventionally, concrete products represented by box culverts and the like are manufactured in a predetermined shape using a manufacturing formwork in a factory (for example, shown in Patent Document 1).
When manufacturing the concrete product, a working scaffold is attached to the outer wall surface of the manufacturing formwork, and the worker performs the work of placing concrete in the formwork by using the working scaffold.
After the concrete is poured into the manufacturing formwork, the worker performs a compacting operation using a vibrator (internal vibrator) using a working scaffold.

Moreover, the said formwork may be used also in another factory, and when lending and borrowing between factories, the formwork is transported by a truck etc. in the state which attached the work scaffold integrally.
Then, a formwork is installed at the work site, and an operator performs the work of placing the work on a work scaffold provided on the formwork, and performs the compaction work.
After the compaction work is completed, either return the formwork to the original factory with the work scaffold attached, or heat the entire welded part of the formwork where the work scaffold is attached. After removing the scaffold from the formwork and dismantling the work scaffold, the formwork is returned to the original factory.

JP 2001-191320 A

However, since the above-mentioned formwork has a structure in which the work scaffold is integrally attached from the beginning, a large vehicle that matches the overhanging width when the scaffold is integral is required, and the transportation cost for that is only the formwork. It was expensive compared to shipping.
In addition, the work scaffold is integrated into the formwork, and the scaffold body is composed of thin members, so it can be easily damaged by colliding with something during transportation in the factory. As a result, the cost and labor of the repair were increased, and the production cost of the concrete product was also affected.

In order to solve the above-mentioned problem, there is a method of separating the work scaffold during transportation and attaching it by welding or the like at the work site, but this method has a problem that time and cost increase when separating or attaching the scaffold. It was.
Moreover, since the work scaffold has a structure that is almost integrally attached to the formwork, when the work scaffold is removed from the formwork by applying heat to the welded part, etc., the heat is applied to the entire form. There was a risk that the frame itself would be deformed.

  The present invention has been made to solve the above-described problems, and provides an assembly type detachable scaffold capable of easily assembling and attaching a work scaffold used in manufacturing a concrete product to a product formwork. Objective.

(1) According to the invention described in claim 1, a plurality of scaffold support arms are provided in a projecting manner on the outer wall of the formwork at fixed intervals via a scaffold mounting member, and a predetermined fixing means is provided between the scaffold support arms. The scaffolding plate is detachably placed and fixed by the above, and the handrail frame is detachably erected at a predetermined position of the scaffolding plate, and the other side edge of the scaffolding plate bent downward as a fixing means for fixing the scaffolding plate And the engaging portion formed at the tip of the scaffolding support arm, and one side edge of the scaffolding plate bent downward and the mounting plate vertically attached to the scaffolding support arm are integrated by a fixing bolt It is an assembly-type detachable scaffold characterized in that it is fixedly connected to the frame.

(2) In the invention according to claim 2, the scaffold mounting member is configured such that a scaffold mounting channel is fixed in a vertical direction on an outer wall of a mold, and an engagement hole is formed in a side wall of the channel. 2. The assembly-type detachable scaffold according to claim 1, wherein a plurality of the scaffold support arms are engaged and protruded at regular intervals so as to be detachable from the engagement hole.

(3) The assembly type attachment and detachment according to claim 1, wherein the handrail pipe for attaching and handing up the handrail frame is attached to a predetermined position of the peripheral portion of the scaffold plate. It is a free scaffold.

(4) The invention according to claim 4 superimposes the ladder mounting pipe disposed on the ladder and the handrail pipe standing on the side edge of the scaffold plate, and the ladder mounting pipe and the handrail pipe are combined. The assembly type detachable scaffold according to any one of claims 1 to 3, wherein a ladder is suspended from a scaffold plate by being connected vertically by a common shaft of a handrail frame.

(5) In the invention according to claim 5, the fixing bolt for connecting and fixing one side edge of the scaffold plate bent downward and the mounting plates provided on the left and right of the scaffold support frame is provided on the scaffold support arm. The fixing bolt that is loosened by the vibration of the mold can be surely fixed so as to be freely inserted into the distal end portion of the substantially V-shaped pin that can be spread and mounted. The assembly-type detachable scaffold according to any one of items 3.

According to the first aspect of the present invention, the assembly type detachable scaffold of the present invention is configured so that the work scaffold is attached to the formwork formwork by the assembly type, and the parts constituting the scaffold are disassembled. Since it can be moved in the factory, it is possible to prevent the scaffold from being damaged, and when not using the formwork, it can be efficiently moved and stored in a small space.
In addition, since the assembly-type removable scaffold can be shared by a plurality of molds, the cost for producing the molds can be greatly reduced, and the cost of the product can be reduced.

  Furthermore, when moving and transporting the formwork to other factories, if each factory has the assembly-type detachable scaffolds of the present invention, the scaffolds are integrated because only the formwork body can be transported by removing the scaffolds. A smaller vehicle that does not require a large vehicle according to the overhanging width of the case (for example, if a 10t vehicle is required due to the width in the case of with a scaffold, it can be loaded on a 4t vehicle if the scaffold is removed) It can be transported at a low cost, and the transportation cost can be reduced.

  In addition, since the assembly type removable scaffold of the present invention has a structure in which each member of the scaffold can be easily assembled without requiring a special tool, the scaffold for the formwork in the concrete product manufacturing site is provided. The assembly workability can be facilitated, and the scaffold can be easily fixed to the formwork, so that it is possible to construct a scaffold with improved safety.

  According to the method of claim 2, the scaffold attachment member has a scaffold attachment channel fixed in the vertical direction outside the formwork, an engagement hole is formed in the side wall of the channel, and the engagement member is formed. Since a plurality of the scaffold support arms are provided in a projecting manner so as to be detachable from the joint hole at regular intervals, a scaffold mounting channel is fixed to the outside of the mold in advance regardless of the type and size of the mold. By installing or fixing the scaffold attachment channel to a place where a scaffold is required, the scaffold support arm can be firmly attached to the scaffold attachment channel.

  A scaffolding attachment member (scaffolding channel) for attaching a scaffold plate or the like is attached in advance to the formwork, and it is not necessary to attach or detach it by welding, and the scaffolding attachment member is fixed to the formwork later. Even in this case, since the place where heat is applied by welding is minimized, the entire mold can be prevented from being deformed by heat as much as possible.

  According to the third aspect of the present invention, since the handrail pipe for attaching the handrail frame to the predetermined position of the peripheral portion of the scaffold plate is attached, the handrail frame is attached integrally with the scaffold plate. Thus, it is possible to facilitate the assembly of the handrail to the scaffold plate, and to have a scaffold structure with improved fixation and safety.

  According to the fourth aspect of the present invention, the handrail pipe standing on the side edge of the scaffold plate and the ladder mounting pipe disposed on the ladder are superposed, and the ladder mounting pipe and the handrail pipe are handrailed. Since the ladder is suspended from the scaffold plate by connecting it up and down with a common axis of the frame, it is easy to assemble the ladder to the scaffold plate and has an effect of making the scaffold structure in which the ladder and the handrail are integrated. .

  According to the fifth aspect of the present invention, the fixing bolt for connecting and fixing one side edge of the scaffold plate bent downward and the mounting plate provided on the left and right of the scaffold support frame straddles the scaffold support arm. The fixing bolt that can be inserted into the tip of the expandable substantially V-shaped pin that is loosened by the vibration of the formwork is securely fixed. Even if vibration for hardening is applied, the scaffold can be firmly fixed to the mold.

It is the perspective view which showed the whole structure of the assembly-type detachable scaffold at the time of assembly completion. It is explanatory drawing which showed the decomposition | disassembly structure of the assembly-type removable scaffold. It is explanatory drawing which showed the structure of the scaffold support arm. It is the side view which showed the structure which attached the height adjustment metal fitting to the formwork. It is the perspective view which showed the structure which attached the channel for scaffold attachment to the mold. It is the perspective view which showed the structure which attached the scaffold support frame to the channel for scaffold attachment. It is the perspective view which showed the structure which attached the scaffold plate to the scaffold support frame. It is the perspective view which showed the structure which attached the ladder frame to the scaffold plate. It is explanatory drawing which showed another embodiment. It is explanatory drawing which showed the state which accommodated the scaffold components on the pallet.

  According to the present invention, a plurality of scaffold support arms are engaged and protruded from the outer wall of the formwork via a scaffold mounting member at regular intervals, and the scaffold plate is detachably mounted by a predetermined fixing means between the scaffold support arms. The handrail frame is detachably erected at a predetermined location on the scaffold plate, and the fixing means for fixing the scaffold plate is the other side edge of the scaffold plate bent downward and the tip of the scaffold support arm. In addition to engaging the formed engaging portion, one side edge of the scaffold plate bent downward and the attachment plate attached to the scaffold support arm in the vertical direction are integrally connected and fixed by a fixing bolt. And

  That is, according to the present invention, a scaffold is configured to be detachable from a mold at a concrete product manufacturing site, and a scaffold with improved workability is configured as a mold.

(Structure of assembly type removable scaffold)
Hereinafter, the assembly-type detachable scaffold 100 according to this embodiment will be described with reference to FIG.
FIG. 1 is an explanatory view illustrating the overall structure of an assembly-type detachable scaffold 100 according to this embodiment.

  The formwork 11 is a formwork for producing concrete products represented by box culverts, and the shape and size of the formwork 11 are not particularly limited. For example, the formwork body is made of a steel plate or the like ( Steel formwork).

  And the scaffold 10 which concerns on this invention is comprised so that attachment or detachment is possible at the one side part of the formwork 11, and it is comprised so that it may assemble on the spot.

FIG. 1 is a perspective view showing the entire structure of the assembly-type detachable scaffold 100 when assembly is completed.
That is, as shown in FIG. 1, the assembly type detachable scaffold 100 in the present embodiment has a scaffold attachment channel 12 as a scaffold attachment member fixed to the outer surface of the mold 11 and the scaffold attachment channel 12. The scaffold support arm 14 (shown in FIG. 2) is attached to the scaffold support arm 14, and the scaffold plate 15 is placed and fixed on the scaffold support arm 14 so that the ladder 22 and the handrail frames 17a and 17b are integrated with the scaffold plate 15. It is composed.
Hereinafter, the structure of each component of the assembly-type detachable scaffold 100 will be described in detail.

(About the structure of scaffolding channel)
FIG. 2 is an explanatory view showing an exploded structure of the assembly-type detachable scaffold 100.
As shown in FIG. 2, the scaffold attachment channel 12 is formed in a U-shaped cross section formed by a back plate portion S1 and left and right side plate portions S2 by bending a rectangular metal flat plate.
A rectangular engagement hole 13 is formed in the back plate portion S1, and a bolt insertion hole 31 through which the shift preventing metal fitting 32 is inserted is formed in the left and right side plate portions S2.

Specifically, the engagement hole 13 drilled in the back plate portion S1 is for inserting the engagement pin 27 protruding from the scaffold support arm 14, and the bolt insertion hole 31 drilled in the left and right side portions is for preventing displacement. By inserting the metal fitting 32, the scaffold support arm 14 is prevented from falling off the scaffold attachment channel 12.
The left and right side plate portions S2 end surfaces have welding surfaces for fixing to the mold 11 or the height adjusting bracket 45 (shown in FIG. 4).

(About the structure of the scaffold support arm)
3A and 3B are explanatory views showing the structures of the scaffold support arm 14 and its peripheral members. FIG. 3A is an exploded view of each component, and FIG. 3B is an assembly diagram of each component.
The scaffold support arm 14 has a quadrangle that is deformed in a side view, and is composed of a pair of left and right so that the scaffold plate 15 can be installed.

That is, as shown in FIG. 3A, the main body of the scaffold support arm 14 includes one side part A suspended from the mold 11 side, and an upper side part B having a horizontal side on which the scaffold plate 15 is constructed. The one side portion A is formed into a deformed quadrangle by the other side portion C at the opposite side position and the lower side portion D formed obliquely upward from the mold 11 toward the outside.
Hereinafter, the structure at each side will be described in detail.

First, as shown in FIG. 3A, the structure of one side A of the scaffold support arm 14 will be described.
On one side A, a fixing plate 26 and an engaging pin 27 for fixing to the scaffold attachment channel 12 are disposed.

As shown in FIGS. 2 and 3B, the fixing plate 26 is fixed to one side A of the scaffold support arm 14 by welding or the like.
With this configuration, the fixing plate 26 can come into contact with the outer surface of the back plate portion S1 of the scaffold mounting channel 12, and the scaffold supporting arm 14 is fixed in a vertical posture toward the outer side of the formwork 11. be able to.

As shown in FIG. 3A, the engaging pin 27 is projected in an inverted L shape through the fixing plate 26 on one side A of the scaffolding support arm 14, and in the present embodiment, it is predetermined. It arrange | positions up and down with a space | interval.
As shown in FIG. 2, the engagement pin 27 is configured to be inserted through the engagement hole 13 of the scaffold attachment channel 12.

Next, the structure of the upper side B of the scaffold support arm 14 will be described.
As shown in FIG. 3A, the upper side portion B is constituted by a horizontal side formed horizontally so that the scaffold plate 15 can be placed thereon.
In addition, a rectangular front engagement recess 28 having a predetermined size is disposed on the mold side of the upper side B formed by a horizontal side, and the front engagement recess 28 is a front bent piece of the scaffold plate 15. 16a can be locked.

Further, as shown in FIG. 3A, a mounting plate 19 is disposed on the upper side B.
The mounting plate 19 is a rectangular metal flat plate, and extends to the left and right sides of the upper side B in the vicinity of the front engagement recess 28 side, and is fixed on the scaffold support arm 14 by welding or the like.
The mounting plate 19 has a pair of left and right insertion holes 35 through which the fixing bolts 20 are inserted, and a fastening nut 34 is welded and fixed to the periphery of each insertion hole 35.
The fixing bolts 20 are configured to be screwable with the tightening nuts 34 through the insertion holes 35 on the mounting plate 19.
And as shown in FIG.3 (b), it is comprised so that the fixing bolt 20 front-end | tip may contact | abut the inner wall surface N of the front side bending piece 16a of the scaffolding plate 15 by tightening each fixing bolt 20. As shown in FIG. .

Further, a loosening prevention nut 25 is configured to be screwed onto the base end side of the fixing bolt 20.
The loosening prevention nut 25 prevents the fastening bolts 20 that are tightened from loosening from the mounting plate 19 when vibration is applied during concrete compaction work in the mold 11.
The loosening prevention nut 25 is provided with a through hole 36 through which the left and right ends of the substantially V-shaped pin 24 can be inserted.
That is, as shown in FIG. 3A, the loosening prevention nut 25 is formed with a through hole 36 that penetrates the nut body in the horizontal direction so that the left and right ends of the substantially V-shaped pin 24 can be inserted. ing.

As shown in FIGS. 2 and 3, the substantially V-shaped pin 24 is configured in a substantially V shape so as to bend a single rigid metal wire member. In addition, the substantially V-shaped pin 24 is horizontally configured with a predetermined length at both ends.
The substantially V-shaped pin 24 is configured such that the left and right end portions are urged outwardly by expanding the metal wire member into a substantially V-shape, as described above, and can be expanded. The left and right end portions are inserted through the through hole 36 of the loosening prevention nut 25.
In this way, as shown in FIG. 3B, the substantially V-shaped pin 24 is attached straddling under the scaffold support arm 14.

  Therefore, the fixing bolt 20 for connecting and fixing the front bent piece 16 a of the scaffold plate 15 bent downward and the mounting plates 19 provided on the left and right of the scaffold support arm 14 extends over the scaffold support arm 14. By making it freely insertable at the distal end portion of the attached substantially expandable substantially V-shaped pin 24, it is prevented from loosening due to vibration during the compaction work in the mold 11 and is securely fixed. It is configured.

Next, the structure of the other side C of the scaffold support arm 14 will be described.
As shown in FIG. 3A, a rear engagement recess 29 for locking the protruding piece 30 of the scaffold plate 15 is disposed in the middle of the other side portion C.
Further, the other side portion C is formed with a protruding portion E in which a lower side portion that forms the rear engagement concave portion 29 is protruded outward from the upper side portion.
As shown in FIG. 3 (b), the rear engagement recess 29 is configured such that a protruding piece 30 protruding from the bent piece 16 of the scaffold plate 15 can be freely inserted, and the protruding portion E includes the scaffold plate 15. It is comprised so that the rear side bending piece 16b lower end may be latched.

(About the structure of the scaffold plate)
Next, the scaffold plate 15 is disposed on the pair of left and right scaffold support arms 14, and the plate body is configured, for example, as a mesh plate shown in FIG. 2, but is not limited to this mesh plate. It can also be composed of one or a plurality of flat plates.

As shown in FIG. 2, the scaffold plate 15 includes a bent piece 16 that is bent downward at the periphery of the plate body.
The bent piece 16 of the scaffold plate 15 is formed in a plate shape from the end of the scaffold plate 15 and extends downward. The bent piece 16 is provided with a protruding piece 30 that protrudes inward at a predetermined length.

As shown in FIG. 3B, the front bent piece 16a (form 11 side) is configured to be engageable with a front engaging recess 28 formed on the upper side B of the scaffolding support arm 14.
Further, the lower end of the rear bent piece 16b is configured to be engaged with the protruding portion E of the other side C of the scaffold support arm 14, and the protruding piece 30 of the scaffold plate 15 is connected to the other side of the scaffold supporting arm 14. It is configured to be engageable with the rear engagement recess 29 formed in the portion C.

In addition, a handrail pipe 21 for inserting and standing a handrail frame is attached to a predetermined position on the peripheral edge of the scaffold plate 15.
That is, a plurality of handrail pipes 21 are attached to the outer side portion of the bent piece 16 of the scaffold plate 15 with a predetermined interval by welding or the like.
In the present embodiment, as shown in FIG. 2, the handrail pipes 21 are provided at six locations at the four corners of the scaffold plate 15, the long side side central portion, and the like.

In order to prevent the lower end portion K of the handrail frames 17a and 17b from falling out below the scaffold plate 15 in the pipe 21 for the handrail, for example, a stopper material (not shown) is provided at the lowermost part inside the cylindrical body. Are installed horizontally and welded at both ends.
As a result, the handrail pipe 21 can be a bottomed cylinder, prevents the handrail frames 17a and 17b from coming off, and passes through the space where rainwater and dust are not occupied by the stopper material (not shown). It is configured to prevent it from being stopped.

In addition, as shown in FIG. 2, the handrail pipe 21 has a bolt hole 37 through which a fixing bolt 38 for fixing the handrail frames 17a and 17b is inserted from the outer wall surface to the inner wall surface of the handrail frame 17a. , 17b can be inserted through the fixing bolt 38.
When the fixing bolt 38 inserted into the bolt hole 37 of the handrail pipe 21 is tightened, the front end of the fixing bolt 38 is brought into contact with the lower end portion K, whereby the handrail frames 17a and 17b can be fixed.

(Ladder structure)
Next, as illustrated in FIG. 2, the ladder 22 is configured by attaching a plurality of step bars 22 a with a predetermined interval in the vertical direction between a pair of left and right column members 22 b.
In the present invention, the ladder 22 has a pair of left and right attachment pieces 44 extending horizontally from the upper end of the column member 22b so as to expand in plan view, and is attached to the distal end side of each extended attachment piece 44. The pipe 23 is constructed upright.
The ladder 22 has its ladder mounting pipe 23 disposed above the handrail pipe 21 disposed on one side edge of the scaffold plate 15, and is fixed to the scaffold plate 15 by the fixing pin 40 or the handrail frames 17a and 17b. It is configured to be integrated.

(About the structure of the handrail frame)
The handrail frames 17a and 17b have a function of integrating the ladder 22 and the scaffold plate 15 in addition to the fall prevention function. As shown in FIG. 2, in the present embodiment, the first handrail frame 17a and the second handrail are used. It consists of a frame 17b.

  As shown in FIG. 2, the first handrail frame 17 a has a large-diameter pipe member 47 formed by bending in a substantially inverted U shape, and the center of the left and right support columns formed by the large-diameter pipe member 47. It consists of a small-diameter pipe material 48 that has its ends fixed by welding.

On the other hand, the second handrail frame 17b is configured such that the left and right handrail portions 37a and 37b are rotatable in plan view.
That is, as shown in FIG. 2, the second handrail frame 17b is configured such that the left and right handrail portions 37a and 37b are rotatable at a predetermined angle in plan view with the central shaft pipe 42 as an axis.
Specifically, as shown in FIG. 2, the second handrail frame 17 b includes a central shaft pipe 42 made of a pipe material at the center, and the left and right handrail portions 37 a and 37 b are centered on the central shaft pipe 42. It is configured to be rotatable at about 90 ° in plan view.
Each of the left and right handrail portions 37a and 37b is provided with an annular portion 43 at an upper end portion of a large-diameter pipe member 47 formed by bending substantially in an inverted L shape. An annular portion 43 is disposed at the other end of a small-diameter pipe member 48 that is connected to one end in the middle of the rising portion T, and can be rotated around the central shaft pipe 42. Are connected to each other.
By configuring in this way, the second handrail frame 17b is configured such that the left and right handrail portions 37a and 37b are rotatable about 90 ° in plan view with the central shaft pipe 42 as an axis.

  Further, the first handrail frame 17a and the second handrail frame 17b are configured so that each frame lower end K is fitted and erected in a handrail pipe 21 disposed on the periphery of the scaffold plate 15, respectively, The scaffolding plate 15 can be fixed integrally.

(Assembly method of assembly type removable scaffold)
Next, a method for assembling the assembly type removable scaffold 100 will be described.
FIG. 5 is a perspective view showing a structure in which the scaffold attachment channel 12 is attached to the mold 11, and FIG. 6 is a perspective view showing a structure in which the scaffold support arm 14 is attached to the scaffold attachment channel 12. 7 is a perspective view showing a structure in which a scaffold plate 15 is attached to the scaffold support arm 14, FIG. 8 is a perspective view showing a structure in which a ladder frame is attached to the scaffold plate 15, and FIG. FIG. 3 is a perspective view showing the entire structure of the assembled and assembled removable scaffold 100.

First, as shown in FIG. 4, a height adjusting bracket 45 for adjusting the mounting position is attached to a housing (form 11) to which the assembly type removable scaffold 100 is attached.
The height adjusting bracket 45 is configured by a pair of left and right and is attached to one of the outer surfaces of the mold 11 by welding or the like.
The height adjusting metal fitting 45 is positioned substantially flush with the tip of the extended flange portion 46.
In addition, the attachment process of the height adjustment metal fitting 45 is attached as needed for the said objective, and can be abbreviate | omitted with respect to the formwork 11 which does not have the said flange part 46. FIG.

Next, as shown in FIG. 5, the scaffold attachment channel 12 is welded and fixed to the outer surface of the mold 11.
In order to attach the scaffold support arm 14, the scaffold attachment channel 12 is fixed in the vertical direction on the outer surface side of the formwork 11 (through the height adjusting bracket 45 if there is one).

  Next, by inserting the engagement pin 27 of the scaffold support arm 14 into the engagement hole 13 on the back plate portion S1 of the scaffold attachment channel 12 and shifting it downward, as shown in FIG. A scaffold support arm 14 is fixed on the mounting channel 12.

  Further, as shown in FIG. 3B, the scaffolding support 32 is supported below the misalignment prevention metal fitting 32 by inserting the misalignment prevention metal fitting 32 into the bolt insertion holes 31 on the left and right side plate portions S2 of the scaffold attachment channel 12. Since the engagement pin 27 of the arm 14 is located, the play of the scaffold support arm 14 is limited and fixed.

Next, the scaffold plate 15 is fixed on the scaffold support arm 14.
Specifically, first, as shown in FIGS. 3A and 3A, the projecting piece 30 extending inward from the rear bent piece 16 b is formed on the scaffold supporting arm 14 while keeping the scaffold plate 15 obliquely downward on the rear side. After being engaged with the rear engagement recess 29, the scaffold plate 15 is leveled and the front bent piece 16a of the scaffold support arm 14 is placed on the scaffold support arm 14 as shown in FIGS. Fit into the front engagement recess 28.

Further, the front bent piece 16 a of the scaffold plate 15 is fitted into a front engagement recess 28 formed on the scaffold support arm 14.
In this way, the scaffold plate 15 is constructed on the scaffold support arms 14 installed at two left and right positions with a predetermined interval.

  Thereafter, the fixing bolt 20 having a high nut is inserted into the mounting plate 19 fixed on the scaffold support arm 14, and the fixing bolt 20 is inserted through the insertion hole 35 on the mounting plate 19 and the fixed tightening nut 34. The tip is brought into contact with the inner wall surface N of the front bent piece 16 a of the scaffold plate 15.

  Furthermore, a through hole 36 is provided in the nut 25 for preventing loosening of the tightened fixing bolt 20, and a substantially V-shaped pin 24 that can be expanded and attached to the through hole 36 across the scaffold support arm 14. Insert the tip.

By inserting the tip of the substantially V-shaped pin 24 into the loosening prevention nut 25, the fixing bolt 20 is prevented from loosening.
That is, since the substantially V-shaped pin 24 prevents the loosening prevention nut 25 from rotating, the loosening is prevented.
Therefore, the loosening prevention nut 25 is prevented from loosening due to vibration during the compaction operation, and the rotation of the fixing bolt 20 is suppressed, so that the scaffolding plate 15 is prevented from falling off the scaffolding support arm 14. it can.

  In this way, as shown in FIG. 7, the scaffold plate 15 can be mounted on the scaffold support arm 14, and the scaffold plate 15 and the like are integrated as described above while being easily mounted. 11 can be firmly fixed.

  Next, as shown in FIG. 8, a ladder 22 is installed on one side edge of the scaffold plate 15, and one of the ladder attachment pipes 23 formed on the left and right upper ends of the ladder 22 is connected to the one side edge 4 of the scaffold plate 15. One handrail pipe 21 at the corner is superposed, and at the same time, the other ladder mounting pipe 23 is superposed at the other handrail pipe 21 at the four corners of one side edge of the scaffold plate 15.

Then, a fixing pin 40 (shown in FIG. 2) is inserted into a cylindrical body obtained by superposing one ladder attaching pipe 23 and one handrail pipe 21.
Thereby, the ladder 22 can be integrated and assembled to the scaffold plate 15.

Further, as shown in FIG. 2, one of the lower end portions K of the first handrail frame 17a is inserted into a cylindrical body obtained by superposing the other ladder mounting pipe 23 and the other handrail pipe 21.
Furthermore, the lower end K of the first handrail frame 17a is inserted into a handrail pipe 21 disposed at the center of the scaffold plate 15.
Thereby, as shown in FIG. 1, the 1st handrail frame 17a as a fall prevention fence can be installed in the ladder side outer side part which is a part of periphery of the scaffold plate 15. As shown in FIG.

Further, as shown in FIG. 2, the lower end portions K (three places) of the second handrail frame 17 b are respectively inserted into handrail pipes 21 provided on the periphery of the scaffold plate 15.
That is, as shown in FIG. 2, first, the lower end K of the frame portion at the left end of the second handrail frame 17b in the drawing is inserted into the other handrail pipe 21 of the scaffold plate 15, and secondly the shaft body. The lower end portion K of the central shaft pipe 42 constituting the portion is inserted into the handrail pipe 21 arranged at the four corners outside the formwork of the scaffold plate 15, and thirdly, the lower end portion K of the handrail portion 37a on the right side in the drawing is used as the scaffold. The plate 15 is inserted through handrail pipes 21 arranged at four corners inside the mold.

  Thereby, as shown in FIG.1 and FIG.2, it arrange | positions one handrail part 37a in the longitudinal direction side of the scaffold plate 15, and prevents that an operator falls down to the outer side of the formwork 11, and the other side By arranging the handrail portion 37b on the other side edge of the scaffold plate 15 opposite to the ladder installation side, it is possible to prevent the operator from falling down toward the outer side of the other side edge of the scaffold plate 15.

Finally, fixing bolts 38 screwed through bolt holes are attached to the side portions of the handrail pipes 21 of the scaffold plates 15, and the lower ends K of the handrail frames 17 a and 17 b are attached by the fixing bolts 38. The handrail frames 17a and 17b can be prevented from falling off from the handrail pipe 21.
As described above, as shown in FIG. 1, it is possible to obtain an assembly type detachable scaffold 100 in which the attachment and assembly of the scaffold to the mold 11 are completed.

  Thus, the assembly type detachable scaffold 100 in the present embodiment has a structure that can be easily assembled in a factory, a construction site, or the like, so that it can be assembled and installed in the mold 11 at an early stage, It can also be easily disassembled.

  Furthermore, the assembly type detachable scaffold 100 is provided with double-triple safety measures to prevent the operator from falling, despite the simple method of fixing all members even in the case of strong vibration during compaction. Therefore, the members are prevented from falling off, and safety is ensured.

  That is, the assembly type detachable scaffold 100 of the present invention can be attached to other formwork 11 in common, and the formwork 11 can be made compact, so that the production cost of the formwork 11 can be suppressed. In addition, since there is no protrusion of the scaffold 10, movement within the factory is smooth and storage can be saved.

FIG. 9 is an explanatory view showing another embodiment.
The assembly type detachable scaffold 100 according to the present invention has a single stage of the scaffold plate 15 in the above description, but can be configured in a plurality of stages by providing another scaffold plate 15 on the scaffold attachment channel 12.

That is, as shown in FIG. 9, the scaffold support arm 14 for constructing the lower scaffold plate 15 is engaged with the lower engagement hole 13 among the plurality of engagement holes 13 disposed above and below the scaffold attachment channel 12. Then, the scaffold support arm 14 for constructing the upper scaffold plate 15 is engaged with the upper engagement hole 13.
In this way, it is possible to configure the assembly type detachable scaffold 100 ′ in which the two upper and lower scaffold plates 15, 15 are installed.

FIG. 10 is an explanatory view showing a state in which the scaffold component is stored on the pallet 41.
The assembly type detachable scaffold 100 of the present invention is configured to be disassembled for each part, and the scaffold-integrated mold 11 is configured to be assembled on site.
With this configuration, the removable scaffold 100 of the present invention can be removed from the mold and placed on the pallet 41, so that it can be easily transported and moved, and the mold does not have an overhanging scaffold. It can be moved in a state, there is no fear of breakage due to carelessness, the repair cost can be suppressed, and the storage of the formwork can be saved, and the loading and unloading becomes easy.

  Further, as shown in FIG. 10, since all assembly parts can be placed on one pallet 41 when transported or not used, the structure is not bulky when transported or not used. It will be. Therefore, a large storage space in a factory or the like is not required.

  As described above, some of the embodiments of the present invention have been described in detail with reference to the drawings. However, these are merely examples, and various embodiments can be made based on the knowledge of those skilled in the art including the aspects described in the section of the disclosure of the invention. The present invention can be implemented in other forms that have been modified or improved.

DESCRIPTION OF SYMBOLS 100 Assembling-type removable scaffold 11 Formwork 12 Scaffolding channel 13 Engagement hole 14 Scaffold support arm 15 Scaffold plate 16a Front bent piece 16b Front bent piece 17a First handrail frame 17b Second handrail frame 18 Engagement part 19 Mounting plate 20 Fixing bolt 21 Handrail pipe 22 Ladder 23 Ladder mounting pipe 24 Substantially V-shaped pin 25 Loosening prevention nut

Claims (5)

A plurality of scaffolding support arms are provided on the outer wall of the formwork at regular intervals via scaffolding attachment members,
A scaffold plate is detachably placed and fixed by a predetermined fixing means between the scaffold support arms,
A handrail frame is set up detachably at a predetermined place on the scaffold plate,
As a fixing means for fixing the scaffold plate, the other side edge of the scaffold plate bent downward is engaged with an engagement portion formed at the distal end portion of the scaffold support arm,
An assembly-type detachable scaffold, wherein one side edge of a scaffold plate bent downward and a mounting plate attached to a scaffold support arm in a vertical direction are integrally connected and fixed by a fixing bolt. The scaffold mounting member is fixed to a scaffold mounting channel in the vertical direction on the outer wall of the mold,
An engagement hole is formed in the side wall of the channel;
2. The assembly-type detachable scaffold according to claim 1, wherein a plurality of the scaffold support arms are slidably engaged with the engagement holes at regular intervals.   The assembly-type detachable scaffold according to claim 1 or 2, wherein a handrail pipe for attaching and standing the handrail frame is provided at a predetermined position on a peripheral portion of the scaffold plate.   By superposing a ladder mounting pipe disposed on the ladder and a handrail pipe erected on the side edge of the scaffold plate, and connecting the ladder mounting pipe and the handrail pipe vertically by a common shaft of the handrail frame The assembly-type detachable scaffold according to any one of claims 1 to 3, wherein a ladder is suspended from the scaffold plate.   A fixing bolt for connecting and fixing one side edge of the scaffold plate bent downward and the mounting plates provided on the left and right sides of the scaffold support frame is a substantially V-shape that can be expanded across the scaffold support arm. The assembly type according to any one of claims 1 to 4, wherein the fixing bolt that can be inserted into a tip portion of the pin and is loosened by vibration of the mold is surely fixed. Removable scaffold.

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