JP2014009453A - Temporary scaffold assembly jig and assembling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve a work environment capable of securing safety of an existing scaffold in a method of suspending a new scaffold assembled on the ground and adding it onto an existing scaffold precedently assembled when assembling a temporary scaffold.SOLUTION: A jig for suspension is used for assembling a temporary scaffold in which standard-sized tubular leg post members each provided with engaging holes penetrating in the lengthwise direction in its outer peripheral surface and standard-sized horizontal structural members laid on the adjacent leg post members. The jig for suspension includes a fitting member of which upper part is an insertion part to be inserted into the engaging hole of the leg post member, in which an engaging hole reception part is formed at the middle part, and of which lower part is a foundation part with a through-hole for a suspension engagement tool formed.

Description

  The present invention relates to an assembly jig for a temporary scaffold used for building construction and building repair, and an assembly method thereof.

Conventionally, scaffold assembly specialists manually assemble and disassemble temporary scaffold members at work sites. This is an operation in which struts of about 2 m are connected up and down, floor materials to be used as treads are placed horizontally, assembled in multiple stages from below to the required height, and disassembled after completion. Such a temporary scaffolding is a work at a high place that may be assembled to a height of 30 meters or more. Since the design of the temporary scaffolding to be constructed differs depending on the size, height, shape of the building, and the surrounding conditions of the building, the vertical struts and horizontal treads will be assembled on the work site, so that people A unit member set to such an extent that it can be handled physically is used.
In the conventional assembling method, each member has to be lifted as the assembling progresses, and since the assembling is a work at a high place, the work efficiency is extremely poor, and it takes time and labor, and is a work that involves danger. . This is a work that is unstable and dangerous because the work is extended upward without support such as a handrail. Similarly, dismantling starts from the top and proceeds downward. The actual work site is a work in which the member is handed down without any support, and there is a risk of dropping.
There is a shortage of craftsmen who assemble temporary scaffolds that involve such dangerous work, and the declining birthrate and aging population will further lead to a shortage of craftsmen.
A conventional example of such a multistage scaffold is shown in FIG. A lowermost pedestal 303a is erected on the ground 301 via a base 302 and fixed with a brace 304a, and then a lowermost scaffolding plate 305a is attached. Next, an operator rides on the scaffolding plate 305a, the second-stage frame column 303b is connected to the lowermost-stage leg column 303a, and is fixed by the brace 304b, and then the second-stage scaffolding plate 305b is attached. Thereafter, the same operation is repeated to attach the third-stage leg column 303c, the brace 304b, and the scaffolding plate 305c, and further to the upper stage. In such a conventional multi-stage scaffold structure, many workers such as a worker for lifting components, a relay carrier b, and an assembly worker c are required, and the number of man-hours is large and the work itself is complicated. The problem of requiring skill and the work where the work place is always at the uppermost position and there is no railing material such as a handrail is a great risk of falling. There are similar problems in dismantling and removal.

In order to improve safety and work efficiency, several methods have been proposed in which a unit in which unit members are assembled is lifted with a crane or the like and assembled to the upper part.
For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. H05-25928), a building frame is hung by a plurality of stages on a building frame hanger lifted by a crane A, conveyed to a predetermined installation location, and the building frame is lowered. After the step of lowering and installing in order, the fabric frame is hung on a crane frame B suspended by a plurality of fabric frames and conveyed to the place where the building frame is installed. A method of assembling a scaffold is disclosed in which the steps of lowering in order and installing between the building frames are performed. In this method, a plurality of members are lifted, but the assembly is performed one by one.
In Patent Document 2 (Japanese Patent Laid-Open No. 2-112558) and Patent Document 3 (Japanese Patent Laid-Open No. 5-25927), a method of assembling a scaffold that is assembled by extending downward while lifting a preceding scaffold assembled by a crane. Has been proposed. In this method, the addition work can be performed on the ground.
In Patent Document 4 (Japanese Patent Application Laid-Open No. 2003-138742), scaffold units d1 and d2 formed by connecting building frames in several rows and several layers are assembled in advance, and the scaffold units d1 and d2 are arranged in several rows and several layers. The upper and lower scaffolding units are connected to each other by connecting the lower scaffolding of the lowermost building frame row of the upper scaffolding unit to the uppermost building frame of the lower scaffolding unit. An assembly method is disclosed in which a conical guide fitting is removably attached to a connecting cylinder shaft protruding from a row rod, and the lower end portion of the upper leg rod is externally fitted from the guide fitting to the connecting cylinder shaft. Has been. This assembly method is shown in FIG. Even in this method, the workers a and a are working in a state where there is no protective means such as a handrail, and the risk of being shaken off due to heavy shaking of the scaffold unit increases. In addition, since the upper end side, which is a general crane suspension system, is suspended, it is necessary to remove the hook above the scaffold unit. Efficiency is limited.
Further, in this document, a special alignment jig having a complicated receiving and projecting structure is used for positioning the upper and lower pedestals, which is complicated in structure and expensive.
Patent Document 5 (Japanese Patent Application Laid-Open No. 9-268754) discloses a method for assembling a scaffold in which a quadrilateral frame that is a combination of left and right pedestals that can be bent and upper and lower horizontal folds are stacked in a folded state and stretched upward. Is disclosed.

In the method of lifting using a crane disclosed in Patent Document 1 or Patent Document 4, a method of lifting a wire by placing a wire on the upper end side of a newly installed scaffold is taken, and the scaffold assembler stands on the upper surface of the preceding scaffold. We are assembling. This extra work environment has no handrails and is unstable and still dangerous.
From the viewpoint of crane lifting work, it is in line with the basics of suspension that the suspension posture is more stable when the upper side is suspended and supported. Moreover, the state of hanging by its own weight can be finely adjusted for positioning the upper and lower pedestals, which is more convenient. As a result, the assembly work of the scaffold is made more efficient and the opportunity for work at height is reduced, but the danger of the work environment remains the same and the large unit is handled, so the risk of serious accidents increases. ing.

JP-A-5-25928 JP-A-2-111558 JP-A-5-25927 JP 2003-138742 A JP-A-9-268754

  The present invention realizes a working environment that can secure the safety of an existing scaffold in a construction method in which a new scaffold assembled on the ground is lifted and added to an existing scaffold previously assembled when a temporary scaffold is assembled. With the goal.

The present inventor has commonly used a railing such as a handrail member as a safety measure for preventing falling in a temporary scaffold, and as a result of considering applying it to a scaffold for lifting and assembling, the lower side of the newly constructed lifting scaffold Focusing on the fact that a work surface can be formed with a recumbent on the upper side of the existing scaffolding by supporting it, developing a jig to support the lower part, and safely lifting and assembling the temporary scaffolding Provide a method that can be used.

1. Suspension used for assembling a temporary scaffold using a tubular fixed-length pedestal member having a locking hole penetrating in the longitudinal direction on the outer peripheral surface and a fixed-size horizontal hanging member spanned between the adjacent pedestal member. A jig for
The upper part is an insertion part to be inserted into the locking hole of the pedestal member, the locking hole receiving part is formed in the middle, and the lower part is provided with the mounting member which is the base part with the through hole of the suspension locking tool formed Hanging jig.
2. Suspension used for assembling a temporary scaffold using a tubular fixed-length pedestal member having a locking hole penetrating in the longitudinal direction on the outer peripheral surface and a fixed-size horizontal hanging member spanned between the adjacent pedestal member. A jig for
The upper part is an insertion part that is inserted into the locking hole of the pedestal member, the locking hole receiving part is formed in the middle, and the lower part is a mounting member that is a base part in which the through hole of the suspension locking tool is formed. ,
A retaining means is provided at the tip of the insertion portion of the attachment member, and a base portion of the attachment member is provided with an opening through which the lateral coupling member can be inserted, and a lateral slip prevention means for the inserted lateral coupling member. A frame member is provided,
A hanging jig characterized by that.
3. The frame member includes an upper frame member extended from the locking hole receiving portion, a lower frame member attached to a lower portion of the base portion, and a front frame member that connects the upper frame member and the lower frame member. ,
The lower frame material or the front frame material is provided with a hole through which the lateral slip prevention member is inserted,
1. It is characterized by the above. The lifting jig described.
4). 1. It has two or more lengths of horizontal members, and a lateral deviation prevention means and an applicable structure are provided in the interval of the fixed size of the horizontal members. Or 3. Lateral connecting material used for the hanging jig described in 1.
5.1. 2. 3. The hanging jig described in 4. A temporary scaffolding jig set provided with the lateral coupling member, the suspension latch, and the lateral coupling member described in 1.
6). The suspension latch is composed of a shackle having a U-shaped shackle body and a shackle shaft installed between shaft holes formed at both end leg portions thereof. The shackle shaft is used as a through hole of the suspension latch. 4. It is inserted and connected to the shackle body. The temporary scaffolding jig set described in 1.
7.5. Or 6. In addition to the temporary scaffolding jig set described,
A plurality of left and right vertical rails having a width larger than the depth of the temporary scaffolding and a length more than twice that of the horizontal member, and wire attachment members provided at intervals corresponding to the installation intervals of the pedestal members A temporary scaffolding jig set comprising a scaffolding balance provided with a frame composed of horizontal bars.
8). In the assembling method of the temporary scaffolding using a tubular member with a fixed length dimension that is spanned between a tubular pillar member having a fixed dimension and a locking pillar that penetrates in the longitudinal direction on the outer peripheral surface,
It is a temporary scaffold suspension assembly method in which a new scaffold assembled in another place is lifted as a block on the existing temporary scaffold assembled prior to the installation location, and then stacked and assembled on the existing temporary scaffold. ,
1. In the locking hole provided in the lower pedestal member constituting the new block scaffold. Or 2. Attach the lifting jig described above and lift it up,
Insert the insertion part of the lifting tool into the locking hole, lock the lifting tool with the lifting wire connected to the through hole of the lifting tool, lift the lifting wire with a crane, etc. A temporary scaffolding assembly method, characterized by moving over the scaffolding, connecting the existing pillars and the pillars of the new block scaffolding, and assembling them.
9. The uppermost part of the existing scaffolding and the new block scaffolding is in a state where the horizontal bar is connected to the upper part of the position where the floor material is horizontally mounted, and the work surface to be connected is the uppermost floor surface provided in the existing scaffolding It is characterized by the following. The temporary scaffolding assembly method described.
10. In the construction method of a temporary scaffolding using a tubular fixed-length pedestal member having a locking hole penetrating in the longitudinal direction on the outer peripheral surface and a fixed-size horizontal hanging material spanned between adjacent pedestal members. ,
6. When a new scaffold assembled at another place is lifted as a block on an existing temporary scaffold that has been assembled prior to the installation site, and then stacked on the existing temporary scaffold to be assembled. A temporary scaffold suspension assembly method using the temporary scaffold suspension jig set described in
1. In the locking hole provided in the lower pedestal member constituting the new block scaffold. Or 2. The lifting jig described above is attached and lifted up. 1. Install the lifting jig described above on the building side. Attach the hanging jig described on the outside,
Insert the lateral coupling material into the hanging jig attached to the outside, take measures to prevent misalignment,
Connect the tip of the wire extended downward from the wire attachment member of the lifting scale for the scaffolding held by the crane and the like, and the lifting latch locked to the through hole, and lift the lifting wire with the crane, A temporary scaffold suspension assembly method characterized in that it is moved onto an existing temporary scaffold, and the existing pillar and the new block scaffold are connected and assembled.
11. The lifting jig according to claim 1, wherein a ring body is attached to a through hole of a suspension latching tool on an upper pedestal member constituting a new block scaffold, and is freely attached and detached from below or above, and the scaffold is suspended from the ring body. 9. A wire stretched from a balance for use is passed through and used as a shake prevention means. The temporary scaffolding assembly method described.
12 The uppermost part of the existing scaffolding and the new block scaffolding is in a state where the horizontal bar is connected to the upper part of the position where the floor material is horizontally mounted, and the work surface to be connected is the uppermost floor surface provided in the existing scaffolding 10 characterized by that. Or 11. The suspension assembly method for temporary scaffolds as described in 1.

The present invention can safely assemble a temporary scaffold using a pedestal member having a plurality of locking holes on the outer periphery. Developed a jig that can support the lower side of the new scaffold to be lifted, and by supporting the lower side, a work surface with a reed is formed on the upper side of the existing scaffold, and the lifting and assembling work of the temporary scaffold can be performed safely. Realized to do.

1. In the construction of a temporary scaffold using a pedestal member having a locking hole for connecting with a handrail or a bracket on the outer peripheral surface, by using the lifting jig according to claim 1 from below, Detachable operation became possible, and the worker who got on the preceding scaffold assembled prior to the assembly work can be operated safely.
2. The hanging jig according to claim 2, 3. In addition, a lateral connecting member can be attached, and adjacent pedestal members can be aligned. In the assembly method for connecting the partial scaffolds in the vertical direction, a plurality of pedestal members are connected in the vertical direction, and vertical alignment (centering) is important. In the present invention, by passing the connecting member in the lateral direction, it is possible to correct the posture such as meandering, and the connecting operation in the vertical direction can be easily performed.
3. By using the lateral direction connecting member according to claim 4, the position of the adjacent pedestal member can be made accurate, and the vertical connecting operation can be easily performed.
4). The invention according to claim 5 is a temporary scaffolding jig set in which the inventions according to claims 1 to 4 are summarized. By using this set, the temporary scaffold can be assembled safely, accurately, and easily.
5. The invention according to claim 6 specifies a shackle as a suspension latch attached to the suspension jig according to claims 1 and 2. Connect the suspension wire through the shackle.
6). The invention according to claim 7 is a balance for suspending a partial scaffold to be lifted. By using the lifting balance, the upper and lower connecting operations can be performed without losing the posture by suspending and moving in a stable posture.
7). The invention according to claim 8 is an invention relating to an assembly method, wherein a lifting jig is attached below the lifting block scaffold, so that the work can be performed from above the existing scaffold, and the lateral connecting material is provided outside. This is a construction method that reduces the number of work processes on the side of the building that is only slightly away from the building, and reduces the risk that the narrowness will damage the environment and damage the building.
8). The invention according to claim 9 uses a floor surface already provided with a horizontal rail such as a handrail for the existing scaffold as the work surface of the worker who performs the assembly work of the temporary scaffold according to claim 8. The invention relates to a construction method capable of performing a safe work avoiding the risk of falling.
9. The invention according to claim 10 is the above-mentioned 7. In addition to the above effects, the use of a suspension balance enables assembly with a stable posture.
10. According to the eleventh aspect of the present invention, a lifting jig is also attached above the new block scaffold, and the upper wire of the new block is prevented from being shaken by passing the hanging wire, so that the new block is assembled in a more stable posture. This is a construction method that enables work to be performed. Since the lifting jig attached to the upper side can be freely inserted and removed, it can be pulled out downward from the locking hole by loosening the wire after the assembly is completed.
11. The invention described in claim 12 is the above 9.10. In addition, when using the floor surface of an existing scaffold where an operator who performs the assembly work is used, the assembly work can be performed safely in a state where a horizontal rail such as a handrail is laid.

The figure which shows the example of the state of temporary scaffold completion The figure which shows the structural example of a temporary scaffold The figure which shows the state which suspended the block scaffold The figure which shows the whole pedestal member provided with the locking hole The figure which shows the partial expansion of the pedestal member provided with the locking hole The figure which shows the example which combined an example of the jig for suspension, and a horizontal connection member Figure showing an example of a shackle The figure which shows the other example of the jig for suspension The figure which shows the state which combined the jig for suspension with the pedestal member A bird's-eye view showing a state in which a hanging jig is combined with a pedestal member An overhead view showing a state in which other lifting jigs are combined with pedestal members Diagram showing an example of a lifting balance Conventional temporary scaffold assembly schematic diagram

The present invention relates to the construction of a temporary scaffold. The present invention develops a lifting jig that supports the lower side of a new scaffold to be lifted, and safely performs the lifting and assembling work of a temporary scaffold that can perform the assembly work with a handrail provided on the upper side of the floor of the existing scaffold. Provide a method that can be used.
Temporary scaffolding is used for new construction and repair work of buildings. There are three main types of temporary scaffolds depending on the type of basic member: wedge scaffolds, framework scaffolds, and single tube scaffolds. The hanging jig provided by the present invention is suitable for a temporary scaffold using a pillar member in which a plurality of locking holes are arranged around a tube body and the locking holes are provided in a plurality of stages. A typical example is a wedge-type scaffold. The wedge-type scaffolding can be constructed up to a height of about 30 m in terms of safety standards.
The present invention has developed a hanging jig that can be attached to and detached from below with respect to the locking hole of the pedestal member. And, this hanging jig is attached to the lower locking hole of the pedestal member, and the partially constructed block scaffold is lifted and joined to the previously constructed existing scaffold. . Since the lower side of the block scaffolding is suspended and supported, it is a construction method that allows the assembling work to be carried out while riding on the scaffolding on the upper surface of the existing scaffolding and the removal of the suspension tool. The structure of the block scaffold to be lifted is a structure in which handrails are assembled at a higher position than the uppermost tread board when a plurality of tread boards are provided up and down.
The lifting jig detachable from below includes an insertion portion that can be inserted into the locking hole, a locking hole receiving portion that contacts the lower end of the locking hole, and an attachment portion that connects the hanging wire. Furthermore, the structure which attaches the material connected in a horizontal direction can be provided. A specific configuration example of the hanging jig is disclosed as a hanging jig A in FIG. 6 and as a hanging jig B in FIG. In these examples, a shackle is used as a connection tool with a wire.
In addition, the lifting jig is also placed in the middle or upper part of the lifting block scaffold, and is used by connecting to the wire, so that the middle and upper parts can be pressed in addition to supporting the lower part of the block scaffold. The swing is limited and a stable suspension posture can be maintained.
In order to stabilize the suspension posture of the block scaffold, the present invention can further use a suspension balance. The hanging balance has a rack-like structure composed of a vertical beam and a horizontal beam. The shape is larger than the plane of the suspended block scaffold, and a wire can be attached to a location corresponding to the span of the pedestal member. In addition, a wire that connects to a lifting device such as a crane is attached to the upper part. This lifting balance can be a split type that can be connected and used according to the size of the lifting block scaffold. By dividing, transportation becomes easy.
The present invention proposes a temporary scaffold lifting jig set that includes a set of a lifting jig, a shackle, a lateral connecting member, a lifting balance, and the like. By using this set, the temporary scaffold can be assembled safely.
The embodiments of the present invention will be described below with specific examples.

<Overall configuration>
Temporary scaffolding is a scaffold constructed in the vicinity of buildings such as buildings as buildings are constructed for new construction or repair. As shown in FIG. 1, the completed temporary scaffold 100 is constructed around a building 200 by connecting a plurality of pedestal members in the vertical direction and connecting them in the horizontal direction with scaffolding plates or handrail members. The scaffold is temporarily constructed using standardized parts according to the required size and shape.
A configuration example of the temporary scaffold is shown in FIG. A plurality of bases 4 are grounded on the ground G to obtain a horizontal reference. The base member 4 is disposed with a predetermined interval in the front-rear direction with respect to the building. A pedestal member 1 is erected on the base 4 and provided in parallel in the front and rear direction. A bracket 5 is spanned between the front and rear leg columns 1, 1, a handrail 3 is hung between the leg column members 1, 1 adjacent in the lateral direction, and a tread 2 is spanned between the brackets 5, 5. The temporary scaffold is connected to the building 200 by a wall tether 6. As described in Patent Documents 1 to 4, the temporary scaffold is assembled in the vertical direction and the horizontal direction.

In the present invention, for example, three pedestal members shown in FIG. 3 are cascaded, and a block scaffold 150 formed in four spans in the lateral direction is lifted and assembled on an existing scaffold constructed in advance.
A hanging jig A20 is attached to the lower part of the block scaffold 150, and a hanging jig B30 is attached to the upper part as necessary. A hanging scaffold wire 78 is attached to the hanging jig A20, and the lower part of the block scaffold 150 is supported while being suspended and moved to perform assembly work. FIG. 3A is a front view of the block scaffold 150 as viewed from the outside. FIG. 3B schematically shows a cross section. The side coupling member 50 may not be provided on the building side of the block scaffold 150. By omitting the horizontal connecting member, the assembling work can be simplified, and the work on the narrow building side can be facilitated and the safety can be improved. A plurality of the hanging jigs B may be arranged at an intermediate height.

The block scaffold 150 shown in FIG. 2 has three pedestal members connected vertically, five rows of pedestal members arranged in the lateral direction, three footboards 2 provided, and handrails above the footboards. Two 3 are arranged. When the pedestal member is 1.8 m, the footboard and the handrail are 1.8 m, and the width is 60 cm, the block scaffold has a height of 5.4 m and a lateral width of 7.2 m and a weight of about 600 kg. Since the parts are assembled as a coupling means with a focus on the bayonet connection, it is important for ensuring accuracy to suspend them regularly using a suspension balance. In order to arrange the five columns of column scaffolds of such a horizontal block scaffold in a horizontal row, it is effective to pass the horizontal connecting member 50 through the hanging jig A20. If the suspended block is made small, it is possible to operate without using a balance or a horizontal connecting material.
Since one pedestal member is provided with locking holes in four steps at intervals of 45 cm, there is a handrail at a height of 45 cm and 90 cm upward from the top plate 2 of the uppermost layer of this block scaffold. . The existing scaffold assembled in advance has the same structure. Therefore, the lower end of the block scaffold 150 is within easy reach from the existing uppermost step board. Since the lifting jig A20 is about 135 cm up to the lowest locking hole, the operation of the lifting jig A20 can be performed on a work surface with a handrail, so that safety can be ensured.
The structure of the block scaffold to be lifted is a structure in which handrails are assembled at a higher position than the uppermost tread board when a plurality of tread boards are provided up and down.

<About hanging jigs>
The basic configuration of the hanging jig used in the present invention is as described above. A specific embodiment is shown in FIGS.
The hanging jig A shown in FIG. 6 is an example in which a gap through which the lateral coupling material is passed is provided. Fig.6 (a) is a side view of the jig | tool A for hanging in the state which penetrated the horizontal direction connection material 50, FIG.6 (b) has shown the front view. The retaining member 53 is omitted in FIG. 6A, and the lateral displacement prevention member 51 is omitted in FIG. 6B.
The lifting jig A includes an insertion portion 21 to be inserted into the locking hole of the pedestal member at the upper portion, and a base portion 23 having a through hole 24 through which a shackle is passed at the lower portion, and the foundation portion 23 and the insertion portion 21. The locking hole member receiving portion 22 is disposed between the two. A frame member 25 having the locking hole member receiving portion 22 as a part is provided so as to surround the base portion 23. The frame member 25 has the locking hole member receiving portion 22 as an upper frame member 25 a, and the front frame member 25 b, the lower frame member 25 c, and the lower frame member are bent and connected to the back surface of the base portion 23. In this example, an opening 26 is formed in an L shape by the distance between the base portion 23 and the front frame member 25b and the distance between the lower side of the base portion 23 and the lower frame member 25c. The L-shaped opening 26 is suitable as a shape to pass through when an L-shaped member is used as the lateral connecting member.
A retaining hole 27 is formed in the upper part of the insertion part 21. A pin hole 28 is formed in the front frame member 25b. Pins and the like are inserted into these holes. The retaining hole 27 performs the retaining function by inserting the insertion portion 21 into the locking hole of the pedestal member and inserting a U-shaped retaining member 53 into the locking hole 27 in a state of protruding to the upper side. The pin hole 28 provided in the front frame member 25b is overlapped with the pin hole 52 provided in the lateral direction connecting member 50, and the U-shaped lateral deviation preventing material 51 is inserted to achieve the lateral deviation preventing function. By using the U-shaped pin for the lateral slip prevention member 51 and the retaining member 53, the “n-type” posture is naturally obtained when the pin is inserted, and the posture is stabilized without using a bolt or the like. And since it can be easily done manually even when releasing the engagement, the operation is simple and easy to handle, and it is convenient for construction that involves danger. By sharing these two U-shaped pins, the number of parts can be reduced.
Since the insertion part 21 and the base part 23 are heavily loaded, it is preferable that the insertion part 21 and the base part 23 are integrally formed of a high strength material.
The hanging jig A is preferably used on the lower side of the block scaffold to be hung. When used on the lower side, the shackle is passed through the through hole 24, and a ring or hook provided at the tip of the wire is attached to the shackle. An example of a shackle is illustrated in FIG. However, it can also be used above or in the middle of the block scaffold. When used in the middle or above, it is less necessary to use a lateral connecting material.

The hanging jig B shown in FIG. 8 has a configuration in which the frame member 25 of the hanging jig A is omitted.
Fig.8 (a) is a side view of the jig A for suspension, and FIG.8 (b) has shown the front view. The retaining member 53 is omitted in FIG.
The lifting jig B includes an insertion portion 31 to be inserted into the locking hole of the pedestal member in the upper portion, and a base portion 33 in which a through hole 34 for passing a shackle is formed in the lower portion, and the foundation portion 33 and the insertion portion 31. The locking hole member receiving portion 32 is disposed between them. A retaining hole 37 is formed in the upper portion of the insertion portion 31 where the upper surface of the locking hole member receiving portion 32 becomes the locking hole member contact surface 32a. The retaining hole 37 performs the retaining function by inserting the insertion portion 31 into the locking hole of the pedestal member and inserting a U-shaped retaining member 53 into the locking hole 37 in a state of protruding to the upper side. The insertion portion 31 and the base portion 33 are preferably made of a high-strength material integrally because the load is large.
The hanging jig B is used when a lateral connecting material is not required. For example, it is used on the lower side of the building side of the block scaffold to be suspended. When used on the lower side, the shackle is passed through the through hole 34, and a ring or hook provided at the tip of the wire is attached to the shackle. An example of a shackle is illustrated in FIG.
In addition, it can be used above or in the middle of the block scaffold and connected to the wire to prevent the block scaffold from swinging and to stabilize the posture. When used in the middle or above, the insertion portion can be inserted into the locking hole of the pedestal member from below or above, and whether or not the retaining member is applied to the retaining hole 37 is easy to work. It can be decided in consideration of The lifting jig B used above and in the middle has a steadying function and does not need to support a load. If the insertion part is configured to be sufficiently long, the insertion part 31 is effective for preventing the insertion from the locking hole of the pedestal member when the block scaffold is suspended.

  An anti-extraction material such as a U-shaped pin is inserted into the retaining holes 27, 37 and the pin holes 28, 52, and joined to the pedestal member, the lateral connecting material, and the lifting jigs A, B. This pull-out preventing material can be selected and used from the viewpoint of operability and prevention of loss such as a combination of a bolt and a nut, a split pin, and a tilt pin. And these anti-extraction materials can reduce the number of parts and reduce the burden of narrow field work by using a common specification.

<Connecting member for hanging jig and wire>
The hanging jig A or the hanging jig B attached below the lifting block scaffold and the wire extending from the crane are coupled to each other through a connecting member. It is used by being inserted into through holes 24 and 34 formed in the base portions of the respective hanging jigs A and B. For example, the shackle 60 shown in FIG. 7 can be used. It is composed of a U-shaped shackle body 61 and a shackle bolt 62. Holes through which shackle bolts pass are formed at both ends of the shackle body, and female screws are formed in at least one of the holes. One end of the shackle bolt is a bulging portion so that it cannot pass through the hole, and the other end is formed with a male screw, and both are screwed together.
In addition, hooks, rings, chains, etc. can be used.
The connection between the lifting jig and the wire used above or in the middle of the block scaffold is for hanging the shackle, hook, ring, chain, etc., when the hanging jig is inserted into the locking hole of the pedestal member from below. Attach it to the jig, pass the wire through the shackle, and attach a clip or the like that contacts the shackle from below to prevent it from dropping at a predetermined position on the wire. When the hanging jig is inserted into the locking hole of the pedestal member from above, the shackle, hook, ring, chain, etc. are attached to the hanging jig, and the wire is passed through the shackle. A clip can also be provided on the wire. By lifting the wire upward after connecting the block scaffold to the existing scaffold, the upper and intermediate lifting jigs are disengaged.

<Horizontal connection material>
The lateral connection member is provided to align the pedestal provided in several rows in the lateral direction in the block scaffold to be lifted in a row and to perform alignment with the pedestal of the existing scaffold smoothly. In the block scaffold 150 illustrated in FIG. 3, there are five columnar members, and it is necessary to connect the ten columnar members up and down together with the building side. Since the joints are simultaneously made in a substantially horizontal state, it is desirable to regulate the position of each leg column member so that the error is within the range of the inner diameter of the leg column member. Therefore, it is preferable that the length covers the entire width of the lifting scaffold.
In FIG. 6, an L-shaped steel material is shown as an example of the lateral coupling member 50. The length of the lateral direction connecting member 50 corresponds to the length of the entire lateral width of the block scaffold 150 as shown in FIG.
The lateral direction connecting member is provided with a means for restricting the position so that the position of the pillar member can be fixed at a predetermined interval. For example, holes are provided in the laterally connecting member at predetermined intervals, and the pins are pierced through the holes provided in the hanging jig and fixed together. In this example, the opening 26 of the hanging jig is formed in a space shape suitable for the L-shaped lateral connecting member 50. Round bars, square bars, pipes, etc. can be used as the lateral connecting material, and if a mechanism that can connect them is provided, it is possible to take connection means other than the opening shape or opening. It is. The L-shaped material is suitable because the two pieces are flat, have a large bending resistance, are rigid, and have a stable shape such as being difficult to roll. Further, in order to prevent misalignment and to specify the span interval between adjacent pedestal members to a predetermined length, the laterally connecting member has a pin hole 52 and a front frame formed at a predetermined span interval. The pin hole 28 formed in the material 25b is communicated with a U-shaped lateral slip prevention material 51 to have a function of fixing both to a predetermined span interval.

<Hanging balance>
The suspension balance is a pedestal that suspends the block scaffold. In order to maintain a stable posture when lifting the block scaffold with a crane, it is interposed between the crane and the block scaffold.
The hanging balance has a rack-like structure composed of a vertical beam and a horizontal beam. The shape is larger than the plane of the suspended block scaffold, and a wire can be attached to a location corresponding to the span of the pedestal member. In addition, a wire that connects to a lifting device such as a crane is attached to the upper part. This lifting balance can be a split type that can be connected and used according to the size of the lifting block scaffold. By dividing, transportation becomes easy.
An example of the suspension balance mechanism 70 is disclosed in FIG. 12A is a plan view of the suspension balance, FIG. 12B is a front view, FIG. 12C is a sectional view, and FIG. 12D is a perspective view. The suspension balance mechanism 70 includes a rack-shaped suspension balance 71, a sling wire 77 connected to a crane suspension ring 76, and a scaffold wire 78 for suspending a block scaffold.
The lifting balance 71 has a vertical beam 72 and a plurality of horizontal beams 74 arranged on the left and right as a basic configuration of the rack, and a vertical plate 72 is attached with a suspension plate 73 for connecting a sling wire 77 and a scaffold wire 78 to the vertical beam. ing. The suspension plates 73, 73,... Are provided at intervals between the leg pillar members of the temporary scaffold. Wire connecting means are provided above and below the suspension plate 73. In the illustrated example, wire connection holes 73a and 73b are formed.
As a material for the right vertical beam 72R, the left vertical beam 72L, and the horizontal beam 74, a prismatic pipe is suitable. A hollow material is preferable from the viewpoint of balance strength and weight reduction. In the example of the block scaffold 150 shown in FIG. 3, the suspension balance is 7.2 m wide and 5.4 m high and about 600 kg in size. It is done. Even if a prismatic pipe is used, the suspension balance weighs about 300 kg. The vertical beam 72 can be used as a divided type in combination with the size of the block scaffold. FIG. 12A shows an example of a three-divided type in which two connecting members 75 are provided. Dividing also improves transportability.
In the example shown in the figure, three hook wires 77 at both ends and the center are used. The scaffold wire 78 uses three wires at both ends and the center so as to have an interval of 3.6 m. In FIG.12 (c), the cross section is shown and the cross section of prismatic pipe material has appeared. The sling wire 77 is also coupled to the front and rear suspension plates 73 and 73. The scaffold wires 78, 78 are naturally also coupled to the front and rear.

<Usage status of hanging jig>
FIGS. 9, 10, and 11 show a state in which the hanging jig is attached to the locking hole member of the pedestal member.
An example of the pedestal member 1 to which the present invention is applied is shown in FIG. The pedestal member 1 is basically a hollow tube body, and has an upper end joint portion 15 having a thickness that allows the upper end side to be inserted into the tube body. The length of the pedestal member is standardized to 62 cm, 90 cm, 180 cm, 270 cm, 360 cm, etc. for the effective portion excluding the insertion portion. The illustrated example shows an example of a length of 180 cm. In this pedestal member, four locking hole members 11 are arranged at intervals of 90 degrees on the outer surface of the tube body, and four steps are provided at intervals of 45 cm. A hook-shaped wedge provided at both ends of a handrail member or a bracket is inserted into the locking hole and used. An enlarged view of the locking hole portion is shown in FIG. Locking hole members 11a, 11b, 11c, and 11d provided in four directions. The locking hole member 11 has a locking hole 12 penetrating vertically. The lower end side is a locking member lower side 13.
Pin holes 16 and 16 are formed in the upper end joint portion 15 and the lower end portion. The lower end portion 14 of the pedestal column member 1 is inserted over the upper end joint portion 15, and a retaining pin is attached to the pin hole. The column members 1 and 1 are joined up and down.

FIG. 9 shows a state in which the hanging jig A is attached to the locking hole member 11 of the pedestal member 1. This illustrated example is an example in which a hanging jig is attached to the lower end side of the block scaffold.
The insertion portion 21 of the hanging jig A is inserted from below the locking hole 12 and protrudes upward, and a U-shaped retaining member 53 is inserted into the retaining hole 27 so that the pedestal member 1 and the hanging jig A are Join. The upper frame member 25 a of the frame member 25 of the hanging jig A also serves as the locking hole member receiving portion 22 and abuts on the locking member lower side 13. A shackle 60 is attached to the through hole 24 formed in the base portion 23 through a shackle bolt 62 and screwed into the shackle body 61. An L-shaped lateral connecting member 50 is inserted into the opening 26, and a lateral slip prevention member 51, which is a U-shaped pin member, is communicated with a pin hole provided in the front frame member 25 b and the lateral slip prevention member 51. The shackle 60 engages a hook provided at the tip of the scaffold wire.
FIG. 10 shows a perspective view of a state in which the hanging jig A is inserted into the locking hole member 11 a of the pedestal column member 1. 9 shows a state in which the retaining hole 27, the lateral connecting member 50, the shackle 60, and the lateral slip prevention member 51 are omitted from the side view of FIG. The detailed description is the same as in FIG.

FIG. 11 shows a state in which the hanging jig B is attached to the locking hole member 11 a of the pedestal member 1.
The insertion portion 31 of the hanging jig B is inserted from below the locking hole member 11a and protrudes upward to join the pedestal member 1 and the hanging jig B. The locking hole member contact surface 32a of the locking hole member receiving portion 32 of the hanging jig AB contacts the locking member lower side 13.
Although illustration is omitted, a shackle can be attached to the through hole 34 formed in the base portion 33.
The hanging jig B can be attached to the lower side of the block scaffold, the upper part, and the middle. In the case of attaching to the middle or upper part, it is possible to use the insertion part 31 with respect to the locking hole member 11 from above.

<Assembly method 1>
The present invention is a method for assembling a temporary scaffold used for construction on a construction site, and when a temporary scaffold is added upward, a partially constructed block scaffold is once lifted and assembled in advance. It is a construction method in which the upper and lower pedestal members are connected by being moved onto the existing scaffold.
The assembly method of the present invention is suitable for a temporary scaffold that uses a pedestal member in which a plurality of locking hole members are arranged around a tubular body and the locking hole members are provided in a plurality of stages. In general, this method can be applied to a type of scaffold called a wedge type scaffold.
A hanging jig A or a hanging jig B is attached to a locking hole member provided in a lower pedestal member constituting the block scaffold, and a crane or the like is made using a through hole of the hanging locking tool A or B. It is attached to the lifting wire attached to the lifting mechanism, lifted with a crane, etc., moved onto the existing temporary scaffolding, and the existing pedestal and the pedestal of the new block scaffolding are connected and assembled. is there. The structure of the block scaffold to be lifted is a structure in which a horizontal rail such as a handrail is assembled at a higher position than the uppermost tread when the tread is provided in a plurality of layers.
Since the lower part of the lifting block scaffold is supported, it is possible to perform the addition work within a range where the hand can be easily reached from the work floor surface of the existing scaffold. The work surface of the preceding existing scaffold is grounded above the height of the footboard, so the work floor on the top surface of the add-on work can be in a state where the handrail is attached. . Work can be done with the handrail installed above the existing work floor, so there is little risk of stepping off the scaffold even when working upwards, and a safety belt is attached to the handrail. Work is possible in the state.
The assembly of the block scaffolding can be done on the ground or on the truck bed.

<Assembly method 2>
The second construction method proposed by the present invention is a construction method in which, in the assembly method 1, a hanging jig having a structure that can be connected in the lateral direction is attached downward on the building side of the block scaffold. The hanging jig A corresponds to the hanging jig that can be connected in the lateral direction. The pedestal member is regulated at a predetermined position by the lateral connecting member. Therefore, it becomes easy to align the upper and lower pedestal members, and the work at a high place can be performed safely and promptly. The example which attached the jig | tool A20 for suspension to the downward direction of the suspended block scaffold 150 shown by FIG. 3, and connected the horizontal direction connection material 50 to these jigs A for suspension is shown.
Further, a ring body is attached to the through hole of the suspension locking tool on the upper and / or middle of the pedestal member constituting the block scaffold, and a wire extending from the scaffold suspension balance is passed through the ring body to pass the block scaffold. By preventing the upper part from touching, the stability of the suspended posture of the block scaffold is further improved. A hanging jig B is suitable as the hanging locking tool. The insertion part of the hanging jig B is inserted from below or above into the engaging hole of the pedestal member.
When the insertion part of the hanging jig B is inserted from below, a clip or the like is attached to the hanging wire to serve as a drop prevention means for the hanging jig B. In a state where the block scaffold is suspended, the suspension wire is in a tensioned state under load, so that the position of the clip is in a predetermined position and the suspension jig does not come out of the locking hole. The clip can be detachably fixed by sandwiching a wire with a screw or a spring, and is configured to be larger than the shackle attached to the hanging jig B. After connecting the block scaffold to the existing scaffold, the lower end of the suspension wire is released, and once the wire is lowered, the lifting jig can be released from the engagement hole by its own weight to release the engagement. .
When the insertion part of the lifting jig B is inserted from above, a clip is provided on the lower side of the lifting jig for the hanging wire, and after the block scaffold is connected to the existing scaffold, the lifting wire is lifted upward. The jig B can be pulled out of the engagement hole by the clip and the engagement can be released.

<About dismantling the temporary scaffold>
The dismantling of the temporary scaffold can be performed in reverse to the assembly method. Make a block, attach a lifting jig to the lower end, attach a wire, lift it with a crane, and disassemble it. Therefore, the dismantling operation can be performed quickly and safely.

DESCRIPTION OF SYMBOLS 1 Leg pillar member 11, 11a, 11b, 11c, 11d Locking hole member 11-1 Locking hole member 11-2 Locking hole member 11-3 Locking hole member 11-4 Locking hole member 12 Locking hole 13 Locking member lower side 14 Lower end 15 Upper end joint 16 Pin hole 2 Tread 3 Handrail 31
32
4 Base 5 Bracket 6 Wall joint 20 Lifting jig A
21 insertion part 22 locking hole member receiving part 23 base part 24 through hole 25 frame member 25a upper frame member 25b front frame member 25c lower frame member 26 opening 27 retaining hole 28 pin hole

30 Jig B
31 Insertion part 32 Locking hole member receiving part 32a Locking hole member contact surface 33 Base part 34 Through hole 37 Retaining hole

50 Lateral connecting member 51 Side slip prevention member 52 Pin hole 53 Retaining member

60 Shackle 61 Shackle body 62 Shackle bolt

70 Lifting Balance Mechanism 71 Lifting Balance 72 Vertical Beam 72R Right Vertical Beam 72L Left Vertical Beam 73 Hanging Plates 73a, 73b Wire Connection Hole 74 Horizontal Beam 75 Connection Member 76 Crane Hanging Ring 77 Catch Wire 78 Scaffold Wire

100 Completed temporary scaffold 150 Block scaffold 200 Building

A, B Hanging jig G Ground

Claims (12)

Suspension used for assembling a temporary scaffold using a tubular fixed-length pedestal member having a locking hole penetrating in the longitudinal direction on the outer peripheral surface and a fixed-size horizontal hanging member spanned between the adjacent pedestal member. A jig for
The upper part is an insertion part to be inserted into the locking hole of the pedestal member, the locking hole receiving part is formed in the middle, and the lower part is provided with the mounting member which is the base part with the through hole of the suspension locking tool formed Hanging jig. Suspension used for assembling a temporary scaffold using a tubular fixed-length pedestal member having a locking hole penetrating in the longitudinal direction on the outer peripheral surface and a fixed-size horizontal hanging member spanned between the adjacent pedestal member. A jig for
The upper part is an insertion part that is inserted into the locking hole of the pedestal member, the locking hole receiving part is formed in the middle, and the lower part is a mounting member that is a base part in which the through hole of the suspension locking tool is formed. ,
A retaining means is provided at the tip of the insertion portion of the attachment member, and a base portion of the attachment member is provided with an opening through which the lateral coupling member can be inserted, and a lateral slip prevention means for the inserted lateral coupling member. A frame member is provided,
A hanging jig characterized by that. The frame member includes an upper frame member extended from the locking hole receiving portion, a lower frame member attached to a lower portion of the base portion, and a front frame member that connects the upper frame member and the lower frame member. ,
The lower frame material or the front frame material is provided with a hole through which the lateral slip prevention member is inserted,
The hanging jig according to claim 2, wherein: 4. The hanging jig according to claim 2 or 3, wherein the hanging jig has two or more lengths, and is provided with a lateral deviation prevention means and an applicable structure at a distance between the horizontal dimensions of the horizontal members. Lateral connecting material. A temporary scaffold suspension jig set comprising the suspension jig according to claim 1, the lateral connection member according to claim 4, a suspension latch, and the lateral connection member. The suspension latch is composed of a shackle having a U-shaped shackle body and a shackle shaft installed between shaft holes formed at both end leg portions thereof. The shackle shaft is used as a through hole of the suspension latch. The temporary scaffolding jig set according to claim 5, wherein the jig is inserted and connected to the shackle body. In the temporary scaffolding jig set according to claim 5 or 6,
A plurality of left and right vertical rails having a width larger than the depth of the temporary scaffolding and a length more than twice that of the horizontal member, and wire attachment members provided at intervals corresponding to the installation intervals of the pedestal members A temporary scaffolding jig set comprising a scaffolding balance provided with a frame composed of horizontal bars. In the assembling method of the temporary scaffolding using a tubular member with a fixed length dimension that is spanned between a tubular pillar member having a fixed dimension and a locking pillar that penetrates in the longitudinal direction on the outer peripheral surface,
It is a temporary scaffold suspension assembly method in which a new scaffold assembled in another place is lifted as a block on the existing temporary scaffold assembled prior to the installation location, and then stacked and assembled on the existing temporary scaffold. ,
The lifting jig according to claim 1 or claim 2 is attached to and suspended from a locking hole provided in a lower pedestal member that constitutes a new block scaffold,
Insert the insertion part of the lifting tool into the locking hole, lock the lifting tool with the lifting wire connected to the through hole of the lifting tool, lift the lifting wire with a crane, etc. A temporary scaffolding assembly method, characterized by moving over the scaffolding, connecting the existing pillars and the pillars of the new block scaffolding, and assembling them. The uppermost part of the existing scaffolding and the new block scaffolding is in a state where the horizontal bar is connected to the upper part of the position where the floor material is horizontally mounted, and the work surface to be connected is the uppermost floor surface provided in the existing scaffolding The suspension assembly method for a temporary scaffold according to claim 8. In the construction method of a temporary scaffolding using a tubular fixed-length pedestal member having a locking hole penetrating in the longitudinal direction on the outer peripheral surface and a fixed-size horizontal hanging material spanned between adjacent pedestal members. ,
It is described in claim 7 when a new scaffold assembled in another place is lifted as a block on an existing temporary scaffold assembled prior to the installation location and stacked on the existing temporary scaffold. A temporary scaffold suspension assembly method using a temporary scaffold suspension jig set,
The suspension jig according to claim 1 or 2 is lifted by attaching the lifting jig according to claim 1 or 2 to a locking hole provided in a lower pedestal member constituting a new block scaffold. A jig is attached to the building side, the hanging jig according to claim 2 is attached to the outside,
Insert the lateral coupling material into the hanging jig attached to the outside, take measures to prevent misalignment,
Connect the tip of the wire extended downward from the wire attachment member of the lifting scale for the scaffolding held by the crane and the like, and the lifting latch locked to the through hole, and lift the lifting wire with the crane, A temporary scaffold suspension assembly method characterized in that it is moved onto an existing temporary scaffold, and the existing pillar and the new block scaffold are connected and assembled. The lifting jig according to claim 1, wherein a ring body is attached to a through hole of a suspension latching tool on an upper pedestal member constituting a new block scaffold, and is freely attached and detached from below or above, and the scaffold is suspended from the ring body. The suspension assembly method for a temporary scaffold according to claim 10, wherein a wire extending from a balance for use is passed to serve as a shake prevention means. The uppermost part of the existing scaffolding and the new block scaffolding is in a state where the horizontal bar is connected to the upper part of the position where the floor material is horizontally mounted, and the work surface to be connected is the uppermost floor surface provided in the existing scaffolding The suspension assembly method for a temporary scaffold according to claim 10 or 11, wherein:

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