JP6968327B1 - Leading braces and temporary scaffolding for single-tube scaffolding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the workability of a leading brace and enable installation in a short time. SOLUTION: A leading brace 1 for a single pipe scaffold includes a first diagonal member 10 and a second diagonal member 20 arranged so as to intersect each other between a first single pipe and a second single pipe. .. On the upper part of the first lumber 10, the first upper clamp 40 fixed to the first single tube and the first guided object that comes into contact with the outer peripheral surface of the first single tube and is guided in the vertical direction by the outer peripheral surface. A section 80 is provided. At the lower part of the first lumber 10, a first lower clamp 50 fixed to the second single pipe is provided. A second upper clamp 60 fixed to the second single pipe is provided on the upper portion of the second diagonal member 20. A second lower clamp 70 fixed to the first single pipe is provided at the lower part of the second diagonal member 20. [Selection diagram] Fig. 1

Description

The present invention relates to a leading brace for a single-tube scaffold and a temporary scaffold used when constructing a temporary scaffold.

For example, at construction sites and repair work sites of various buildings, temporary scaffolding is constructed according to the scale and structure of the building. The temporary scaffolding is constructed by combining a plurality of building sites, cloth materials for connecting the building sites, scaffolding boards, braces, handrails, and the like. For example, as disclosed in Patent Documents 1 to 3, the brace is such that a pair of diagonal members connecting adjacent building sites are arranged so as to intersect each other, and the end of each diagonal member is built. It is connected to the ground via a wedge.

Japanese Unexamined Patent Publication No. 2010-59631 Japanese Unexamined Patent Publication No. 2012-87596 JP-A-2015-98740

By the way, when the building is tall, it is necessary to increase the height of the temporary scaffolding. Such a high-rise temporary scaffold will be constructed in order from the lower layer to the upper layer, but it is not preferable for the worker to work on the scaffold without the brace, so the worker On the scaffolding downstairs, it is conceivable to make it possible to attach braces upstairs where the scaffolding board has not yet been installed. Such a brace can be called a preceding brace because it is a brace that is attached prior to the installation of the scaffolding board on the upper floor.

The leading brace must be fixed to the building upstairs after moving from downstairs to upstairs, but since the work is from downstairs, the worker can only have the lower part of the leading brace, and the leading brace There is nothing to constrain the movement of the upper part of. The leading brace is a structure that combines elongated diagonal members, and since the diagonal members are connected in a state where relative movement is allowed, the movement of the upper part cannot be restrained, that is, the upper part is free. If it becomes, it becomes unstable. For this reason, it is difficult to say that the work of moving the leading brace upstairs along the building site is easy, and the workability is poor. Further, since a plurality of leading braces are provided in the horizontal direction and also in the height direction according to the number of floors, the above-mentioned work must be repeated, which is a heavy burden on the operator.

The present invention has been made in view of this point, and an object of the present invention is to improve the workability of the preceding brace and enable installation in a short time.

In order to achieve the above object, in the first aspect of the present disclosure, the first single pipe and the second single pipe, which are installed vertically and horizontally separated from each other, are arranged so as to intersect each other. It is possible to presuppose a single-tube scaffolding leading brace provided with a first diagonal member and a second diagonal member connecting the first single tube and the second single tube. The upper part on the side connected to the first single tube is in contact with the first upper clamp fixed to the first single tube and the outer peripheral surface of the first single tube, and is guided in the vertical direction by the outer peripheral surface. A first guided portion is provided. Further, a first lower clamp fixed to the first single tube is provided at the lower portion on the side connected to the first single tube. Further, a second upper clamp fixed to the second single tube is provided on the upper portion on the side connected to the second single tube. Further, a second lower clamp fixed to the second single tube is provided at the lower portion on the side connected to the second single tube.

According to this configuration, when constructing a temporary scaffolding on a multi-story floor using the first and second single pipes that will be the building site, it precedes from downstairs to upstairs before installing the scaffolding board on the upper floor. Move the brace and raise it upstairs. At this time, the worker can only hold the lower part of the first diagonal member and the second diagonal member of the preceding brace, but the first guided portion provided on the upper part of the first diagonal member is the outer periphery of the first single pipe. Since it comes into contact with the surface and is guided upward by the outer peripheral surface, the leading brace can be moved upward in a stable state along the first single tube. This improves the workability of the leading brace.

In the second aspect of the present disclosure, the first guided portion is fixed to the first upper clamp.

According to this configuration, since the first guided portion and the first upper clamp can be integrated, the relative positional relationship between the first guided portion and the first upper clamp can be kept constant. ..

In the third aspect of the present disclosure, the first upper clamp abuts on the outer peripheral surface of the first single tube from one side and the other side in the radial direction of the first single tube, respectively. The first sandwiching member and the second sandwiching member, and the first sandwiching member so as to be rotatable in a direction in which one end side of the first sandwiching member and one end side of the second sandwiching member are in contact with each other. Fastening to fasten the connecting member that connects the other end side of the member and the other end side of the second holding member, and the one end side of the first holding member and the one end side of the second holding member in a direction close to each other. It is equipped with a member. The portion between one end side and the other end side of the first holding member is fixed to the upper part of the first diagonal member, and the first guided portion is fixed to the first holding member. ing.

According to this configuration, when the first holding member and the second holding member are rotated in a direction in which one end side of the first holding member and one end side of the second holding member are separated from each other, the one end side of the first holding member and the second holding member are rotated. Since the distance from one end side of the second sandwiching member is widened, the first single tube can be arranged between the first sandwiching member and the second sandwiching member. After arranging the first single tube between the first holding member and the second holding member, the first holding member and the first holding member and the first holding member in a direction in which one end side of the first holding member and one end side of the second holding member approach each other. 2 When the sandwiching member is rotated, the first sandwiching member and the second sandwiching member come into contact with the outer peripheral surface of the first single tube from one side in the radial direction and the other side of the first single tube, respectively. Then, by fastening the one end side of the first holding member and the one end side of the second holding member in a direction close to each other by the fastening member, the first holding member and the second holding member connect the first single pipe in the radial direction. Can be pinched. Since the first guided portion is fixed to the first sandwiching member, the upper part of the first diagonal member can be reliably guided.

In the fourth aspect of the present disclosure, the first guided portion projects upward from the first holding member.

In the fifth aspect of the present disclosure, the first guided portion has a front side extending portion extending to the front side of the first single tube in front view of the first lumber and the first single tube. Is what you are doing.

According to this configuration, since the front extending portion is arranged in front of the first single pipe, the front extending portion is placed in front of the first single pipe when the first diagonal member tries to fall to the back side. It comes into contact with each other, and the tilting of the first diagonal member to the back surface side is suppressed.

In the sixth aspect of the present disclosure, the first guided portion has a back extending portion extending to the back side of the first single tube in a rear view of the first lumber and the first single tube. Is what you are doing.

According to this configuration, since the back extending portion is arranged on the back surface of the first single tube, the back extending portion contacts the back surface of the first single tube when the first diagonal member tries to fall to the front. However, the fall of the first diagonal member to the front side is suppressed.

In the seventh aspect of the present disclosure, the upper portion of the side connected to the second single tube is in contact with the outer peripheral surface of the second single tube and is guided in the vertical direction by the outer peripheral surface. A part is provided.

According to this configuration, when the leading brace is moved upstairs from downstairs and raised upstairs, the second guided portion contacts the outer peripheral surface of the second single pipe and is guided upward by the outer peripheral surface. , It becomes possible to move the leading brace upward in a stable state along both the first single tube and the second single tube.

An eighth aspect of the present disclosure comprises a handrail that extends from the top of the first diagonal to the top of the second diagonal and is connected to the top of the first diagonal and the top of the second diagonal. There is.

According to this configuration, when the handrail is attached in advance together with the first lumber and the second lumber, the first lumber, the second lumber and the handrail can be moved from downstairs to upstairs in a stable state. can.

In the ninth aspect of the present disclosure, the first and second single pipes that extend vertically and are installed apart from each other in the horizontal direction intersect with each other between the first single pipe and the second single pipe. It is possible to assume a temporary scaffolding provided with a leading brace for a single-tube scaffold having a first diagonal member and a second diagonal member connecting the first single pipe and the second single pipe. can.

As described above, since the first guided portion provided on the upper part of the first diagonal member is guided upward by the outer peripheral surface of the first single tube, the workability of the leading brace can be improved, and the leading brace can be improved. Can be installed in a short time.

It is a front view of the leading brace for a single tube scaffold which concerns on embodiment of this invention. It is a front view of the temporary scaffolding which shows the state which the brace and the handrail are attached to the single pipe of the 1st floor part. It is a front view of the temporary scaffolding which shows the state which the leading brace for a single pipe scaffolding and the handrail are attached to the single pipe on the 2nd floor part. It is a front view of the temporary scaffolding which shows the state which the scaffolding board is installed on the 2nd floor part. It is a front view of the temporary scaffolding constructed by using the leading brace for a single-tube scaffolding. It is a front view which shows the example which fixes the 1st upper clamp to a handrail. It is a front view which shows the example which fixes the 1st upper clamp to the 1st diagonal member. It is a perspective view of the 1st upper clamp and the 1st guided portion. It is a front view of the 1st upper clamp and the 1st guided portion. It is a front view of the 1st upper clamp and the 1st guided portion. FIG. 10 is a view corresponding to FIG. 10 when the first upper clamp is opened. It is a front view of the 1st lower clamp.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is essentially merely an example and is not intended to limit the present invention, its application or its use.

FIG. 1 is a front view of a leading brace 1 for a single-tube scaffold according to an embodiment of the present invention. The leading brace 1 for a single-tube scaffold is a member used when constructing a temporary scaffold (single-tube scaffold) 100 as shown in FIG. In the description of this embodiment, the configuration of the temporary scaffold 100 will be described before the leading brace 1 for the single-tube scaffold is described.

(Temporary scaffolding)
The temporary scaffolding 100 shown in FIG. 5 is constructed at a construction site or a civil engineering work site of various buildings according to the work. In addition to the construction work, the temporary scaffolding 100 is also constructed during the maintenance work. FIG. 5 shows an example of the temporary scaffolding 100 viewed from the front, and is constructed so as to have various heights and shapes according to the scale and structure of the building. In this example, the temporary scaffolding 100 is a multi-layered scaffold on the second floor or higher. FIG. 5 shows a case where the temporary scaffold 100 is on the second floor, but the present invention can also be applied to the temporary scaffold 100 having three or more floors. Further, the left-right direction in FIG. 5 is defined as the width direction of the temporary scaffold 100, but this is for convenience of explanation only, and does not limit the direction of the temporary scaffold 100.

The temporary scaffolding 100 includes a single pipe (first to fourth single pipes) 101 to 104, which is a plurality of construction sites, and a single pipe base 105, in addition to the leading brace 1 for the single pipe scaffold according to the embodiment of the present invention. It is provided with a root girdle 106, a brace 107 for the first floor, and a scaffolding board 110. In addition to these, jack bases, cloth materials, skirting boards, wall joints, stairs, etc., which are not shown, may be used when constructing the temporary scaffold 100. With these members, a temporary scaffold 100 as a single-tube scaffold using a single-tube as a building site is constructed. Each member constituting the temporary scaffolding 100 is referred to as a scaffolding constituent member.

The first to fourth single pipes 101 to 104 are members made of metal single pipes having a circular cross section, which have been conventionally used when constructing a temporary scaffold, and extend in the vertical direction and horizontally to each other. They are located apart. In this example, the first to fourth single pipes 101 to 104 are shown, but the number of single pipes to be built is not limited to four. The first to fourth single tubes 101 to 104 are parallel to each other. The metal single pipe is a member set as a standard product, and the first to fourth single pipes 101 to 104 are made of the same single pipe.

A single tube base 105 is attached to the lower ends of the first to fourth single tubes 101 to 104. The single tube base 105 comes into contact with the ground. Further, in the vicinity of the lower end portion of the first to fourth single pipes 101 to 104, a root entanglement 106 is provided at a portion separated upward from the single pipe base 105. The root girdle 106 is a member of the first to fourth single pipes 101 to 104 that connects adjacent buildings. The single tube base 105 and the root entanglement 106 can be provided as needed.

A brace 107 for the first floor is provided on the root girdle 106. The first-floor brace 107 is the same as the conventional brace, and is composed of two diagonal lumbers and a handrail. The first-floor brace 107 is connected to the first to fourth single pipes 101 to 104 by a clamp member as described later.

(Structure of leading brace for single-tube scaffolding)
Next, the structure of the leading brace 1 for the single-tube scaffold shown in FIG. 1 will be described. The leading brace 1 for a single tube scaffold is arranged so as to intersect each other between a portion corresponding to the second floor of the first single tube 101 and a portion corresponding to the second floor of the second single tube 102. It includes a diagonal member 10 and a second diagonal member 20. The strength of the temporary scaffolding 100 is obtained by connecting the portion corresponding to the second floor of the first single pipe 101 and the portion corresponding to the second floor of the second single pipe 102 by the first diagonal member 10 and the second diagonal member 20. It is possible to improve the problem and prevent the worker from falling from the second floor. The first lumber 10 and the second lumber 20 may be configured to be stretchable. The first lumber 10 and the second lumber 20 can also be called a brace.

In the description of this embodiment, the case where the first single tube 101 and the second single tube 102 are connected by the single tube scaffolding leading brace 1 will be described, but the same single tube scaffolding leading brace 1 will be used for the first. The 2 single pipe 102 and the 3rd single pipe 103 can be connected, and the 3rd single pipe 103 and the 4th single pipe 104 can also be connected. Further, the same single-tube scaffolding leading brace 1 can be used to connect the portion corresponding to the third floor of the first single-tube 101 and the portion corresponding to the third floor of the second single-tube 102. That is, the leading brace 1 for a single-tube scaffold is a scaffolding component that connects the portion corresponding to the second floor or higher of the first single pipe 101 and the portion corresponding to the second floor or higher of the second single pipe 102.

The leading brace 1 for a single-tube scaffold is provided with a handrail 30. The handrail 30 is made of a metal pipe having a circular cross section, and extends substantially horizontally from the upper part of the first diagonal member 10 to the upper part of the second diagonal member 20. The end of the handrail 30 on the side of the first single pipe 101 is connected to the upper part of the first lumber 10, and the end of the handrail 30 on the side of the second single pipe 102 is connected to the upper part of the second lumber 20. .. The handrail 30 may be configured to be expandable and contractible. Further, the handrail 30 may be provided as needed and may be omitted.

The brace main body 35 is composed of the first lumber 10, the second lumber 20, and the handrail 30. In addition to the brace body 35, the leading brace 1 for single-tube scaffolding includes a first upper clamp 40, a first lower clamp 50, a second upper clamp 60, a second lower clamp 70, a first guided portion 80, and a first brace. 2 The guided portion 90 is provided. Specifically, on the upper part of the leading brace 1 for single-tube scaffolding on the side connected to the first single-tube 101, a first upper clamp 40 fixed to the first single-tube 101 and a first single-tube 101. A first guided portion 80 that comes into contact with the outer peripheral surface and is guided in the vertical direction by the outer peripheral surface is provided. Further, a first lower clamp 50 fixed to the first single tube 101 is provided at the lower portion of the single tube scaffolding leading brace 1 on the side connected to the first single tube 100. Further, on the upper part of the leading brace 1 for single-tube scaffolding on the side connected to the second single-tube 102, a second upper clamp 60 fixed to the second single-tube 102 and an outer peripheral surface of the second single-tube 102. A second guided portion 90 that comes into contact with the outer peripheral surface and is guided in the vertical direction by the outer peripheral surface is provided. Further, a second lower clamp 70 fixed to the second single tube 102 is provided at the lower portion of the single tube scaffolding leading brace 1 on the side connected to the second single tube 102.

The first upper clamp 40 and the first lower clamp 50 are the same. Further, the second upper clamp 60 and the second lower clamp 70 are the same. By turning the first upper clamp 40 upside down, it can be used as the second upper clamp 60. Further, by turning the first lower clamp 50 upside down, it can be used as the second lower clamp 70. That is, the same clamp can be used as the first upper clamp 40, the first lower clamp 50, the second upper clamp 60, and the second lower clamp 70. The first upper clamp 40, the first lower clamp 50, the second upper clamp 60, and the second lower clamp 70 may be configured by clamps having different structures without being shared.

FIG. 6 shows an example in which the first upper clamp 40 is fixed to the end of the handrail 30 on the first single tube 101 side. In the example shown in FIG. 6, the upper portion of the first lumber 10 is fixed to the handrail 30 by a fastening member 10a such as a bolt, a nut, or a rivet. The first upper clamp 40 can be fixed to the handrail 30 by a similar fastening member 30a. The end of the handrail 30 on the first single tube 101 side is the upper portion of the single tube scaffolding leading brace 1 on the side connected to the first single tube 101.

FIG. 7 shows an example in which the first upper clamp 40 is fixed to the upper part of the first diagonal member 10. In the example shown in FIG. 7, the end portion of the handrail 30 on the first single pipe 101 side is fixed to the first diagonal member 10 by a fastening member 30b such as a bolt, a nut, or a rivet. The first upper clamp 40 can be fixed to the first lumber 10 by a similar fastening member 10b. The upper part of the first lumber 10 is the upper part on the side connected to the first single pipe 101 in the leading brace 1 for single pipe scaffolding.

Similarly, the second upper clamp 60 shown in FIG. 1 may be fixed to the end of the handrail 30 on the second single tube 102 side, or may be fixed to the upper part of the second diagonal member 20. The end portion of the handrail 30 on the side of the second single pipe 102 and the upper portion of the second diagonal member 20 can be the upper portions of the side connected to the second single pipe 102 in the leading brace 1 for single pipe scaffolding, respectively.

Further, the first lower clamp 50 is fixed to the lower part of the second diagonal member 20. The lower portion of the second diagonal member 20 may be the lower portion on the side connected to the first single pipe 101 in the single pipe scaffolding leading brace 1. Further, the second lower clamp 70 is fixed to the lower part of the first diagonal member 10. The lower part of the first lumber 10 may be the lower part on the side connected to the second single pipe 102 in the single pipe scaffolding leading brace 1.

(Detailed structure of clamp)
As described above, the first upper clamp 40, the first lower clamp 50, the second upper clamp 60, and the second lower clamp 70 are shared. Therefore, the detailed structure of the first upper clamp 40 will be described below. do.

As shown in FIGS. 8 to 11, the first upper clamp 40 has a first sandwiching member 41 and a second sandwiching member that clamps the first single tube 101 (indicated by virtual lines in FIGS. 10 and 11) in the radial direction. 42, a connecting member 43 that rotatably connects the first sandwiching member 41 and the second sandwiching member 42, and a fastening member 44 that fastens the first sandwiching member 41 and the second sandwiching member 42. The first sandwiching member 41 and the second sandwiching member 42 abut against the outer peripheral surface of the first single tube 101 from one side (horizontal direction) of the first single tube 101 in the radial direction (horizontal direction) and from the other side, respectively. 1 A member that clamps a single tube 101 in the radial direction.

In the description of this embodiment, in the state where the first upper clamp 40 is attached to the support column 200, the side below the first upper clamp 40 is simply referred to as "lower" and is above the first upper clamp 40. The side is simply called "upper". Further, the side connected by the connecting member 43 in the first sandwiching member 41 and the second sandwiching member 42 is referred to as the "base end side" of the first sandwiching member 41 and the second sandwiching member 42, and the first sandwiching member 41 and The side of the second sandwiching member 42 opposite to the side connected by the connecting member 43 is referred to as the "tip side" of the first sandwiching member 41 and the second sandwiching member 42. The tip end side of the first pinching member 41 and the second pinching member 42 corresponds to one end side of the present invention, and the proximal end side of the first pinching member 41 and the second pinching member 42 corresponds to the other end side of the present invention. The direction of the first upper clamp 40 is defined in this way only for convenience of explanation, and does not limit the usage state of the first upper clamp 40, and the first upper clamp 40 is defined in a posture other than the illustrated posture. It is also possible to use the clamp 40.

The first sandwiching member 41 has a first upper plate portion 41a, a first lower plate portion 41b, and a first vertical plate portion 41c. The first upper plate portion 41a, the first lower plate portion 41b, and the first vertical plate portion 41c are made of, for example, a steel plate or the like. The first upper plate portion 41a is a portion constituting the upper portion of the first holding member 41 and extends in the horizontal direction. In the first upper plate portion 41a, a first contact surface portion 41d that abuts on the outer peripheral surface of the first single tube 101 is formed in an arc shape along the outer peripheral surface of the first single tube 101. The first lower plate portion 41b is a portion constituting the lower portion of the first holding member 41 and extends in the horizontal direction. In the first lower plate portion 41b, a first contact surface portion 41e that abuts on the outer peripheral surface of the first single tube 101 is formed in an arc shape along the outer peripheral surface of the first single tube 101.

The first vertical plate portion 41c extends in the vertical direction from the side opposite to the first contact surface portion 41d in the first upper plate portion 41a to the side opposite to the first contact surface portion 41e in the first lower plate portion 41b. There is. The first upper plate portion 41a and the first lower plate portion 41b are connected by the first vertical plate portion 41c.

As shown in FIG. 10, the first vertical plate portion 41c is provided with two mounting plate portions 45, 45 so as to project in the horizontal direction. The mounting plate portions 45, 45 are provided in a portion between the base end side and the tip end side of the first holding member 41. As shown in FIG. 9, the protruding end side of each mounting plate portion 45 extends downward, and the fastening member 30a shown in FIG. 6 and the fastening shown in FIG. 7 extend to the downward extending portion. An insertion hole 45a through which the member 10b is inserted is formed. The mounting plate portions 45, 45 sandwich the plate portion 30b provided at the end of the handrail 30 shown in FIG. 6 or the plate portion 10c provided at the end of the first lumber 10 shown in FIG. It is provided. The mounting plate portions 45 and 45 are fastened and fixed to the plate portions 30b and 10c with the plate portion 30b shown in FIG. 6 or the plate portion 10c shown in FIG. 7 sandwiched therein. That is, the portion between the base end side and the tip end side of the first holding member 41 is fixed to the upper part of the handrail 30 or the first diagonal member 10.

A locking plate portion 46 made of, for example, a steel plate is fixed to the tip end side of the first holding member 41. The locking plate portion 46 extends in the vertical direction from the tip end side of the first upper plate portion 41a to the tip end side of the first lower plate portion 41b, and extends from the first upper plate portion 41a and the first lower plate portion 41b to the tip side. Protruding to. The locking plate portion 46 is formed with a shaft portion insertion notch 46a for inserting the fastening shaft portion 44a, which will be described later. The shaft portion insertion notch 46a is open toward the tip end side of the locking plate portion 46.

As shown in FIG. 9, the second sandwiching member 42 has a second upper plate portion 42a, a second lower plate portion 42b, and a second vertical plate portion 42c. The second upper plate portion 42a, the second lower plate portion 42b, and the second vertical plate portion 42c are made of, for example, a steel plate or the like. The second upper plate portion 42a is a portion constituting the upper portion of the second holding member 42, extends in the horizontal direction, and is arranged below the first upper plate portion 41a. As shown in FIG. 10, on the second upper plate portion 42a, the second contact surface portion 42d that abuts on the outer peripheral surface of the first single tube 101 has an arc shape so as to be along the outer peripheral surface of the first single tube 101. It is formed. As shown in FIG. 9, the second lower plate portion 42b is a portion constituting the lower portion of the second holding member 42, extends in the horizontal direction, and is arranged on the first lower plate portion 41b. As shown in FIG. 10, in the second lower plate portion 42b, the second contact surface portion 42e that abuts on the outer peripheral surface of the first single tube 101 has an arc shape so as to be along the outer peripheral surface of the first single tube 101. It is formed.

The second vertical plate portion 42c extends in the vertical direction from the side opposite to the second contact surface portion 42d in the second upper plate portion 42a to the side opposite to the second contact surface portion 42e in the second lower plate portion 42b. There is. The second upper plate portion 42a and the second lower plate portion 42b are connected by the second vertical plate portion 42c.

The connecting member 43 can be made of, for example, a metal round bar, and extends in the vertical direction. The upper portion of the connecting member 43 penetrates the proximal end side of the first upper plate portion 41a and the proximal end side of the second upper plate portion 42a in the vertical direction. That is, an insertion hole (not shown) through which the upper portion of the connecting member 43 can be inserted is formed on the proximal end side of the first upper plate portion 41a and the proximal end side of the second upper plate portion 42a. The upper portion of the connecting member 43 is inserted through both of these insertion holes, and in this inserted state, the connecting member 43 is relative to the proximal end side of the first upper plate portion 41a and the proximal end side of the second upper plate portion 42a. It is relatively rotatable around the center line of the connecting member 43. The upper end portion of the connecting member 43 projects upward from the upper surface of the first upper plate portion 41a. An upper retaining portion 43a is provided at the upper end of the connecting member 43.

Further, the lower portion of the connecting member 43 penetrates the proximal end side of the first lower plate portion 41b and the proximal end side of the second lower plate portion 42b in the vertical direction. That is, an insertion hole (not shown) through which the upper portion of the connecting member 43 can be inserted is formed on the proximal end side of the first lower plate portion 41b and the proximal end side of the second lower plate portion 42b. The upper portion of the connecting member 43 is inserted through both of these insertion holes, and in this inserted state, the connecting member 43 is relative to the proximal end side of the first lower plate portion 41b and the proximal end side of the second lower plate portion 42b. It is relatively rotatable around the center line of the connecting member 43. The upper end of the connecting member 43 projects downward from the lower surface of the first lower plate portion 41b. A lower retaining portion 43b is provided at the lower end of the connecting member 43.

Therefore, the base end side of the first holding member 41 and the base end side of the second holding member 42 are connected by the connecting member 43, and the tip end side of the first holding member 41 and the tip end side of the second holding member 42 are connected to each other. It becomes rotatable in the direction of contact and separation from each other. FIG. 11 shows a first upper clamp 40 in a state where the tip end side of the first sandwiching member 41 and the tip end side of the second sandwiching member 42 are separated from each other, that is, in an open state.

As shown in FIG. 9, connecting plate portions 47 and 47 to which the fastening shaft portion 44a described later is connected are provided on the tip end side of the second upper plate portion 42a and the second lower plate portion 42b, respectively. The connecting plate portions 47, 47 extend substantially horizontally toward the tip side and extend substantially parallel to each other. The connecting plate portions 47, 47 and the second upper plate portion 42a and the second lower plate portion 42b may be integrally molded.

The fastening member 44 includes at least a fastening shaft portion 44a and a nut 44b. A large diameter portion 44c is formed at the base end portion of the fastening shaft portion 44a. The large diameter portion 44c is arranged between the connecting plate portions 47 and 47. The portion of the fastening shaft portion 44a other than the large diameter portion 44c is composed of a screw rod having a thread groove continuously formed on the outer peripheral surface, and may be formed of, for example, a bolt shaft portion or the like. The nut 44b is a member that is screwed into the fastening shaft portion 44a. The end surface of the nut 44b comes into contact with the peripheral edge portion of the shaft portion insertion notch 46a in the locking plate portion 46.

The fastening member 44 also includes a support shaft 44d that supports the fastening shaft portion 44a. The support shaft 44d is a member for rotatably supporting the large diameter portion 44c of the fastening shaft portion 44a with respect to the tip end side of the second holding member 42. The support shaft 44d is made of a round bar member extending in the vertical direction like the connecting member 43. The upper portion and the lower portion of the support shaft 44d penetrate the connecting plate portions 47 and 47, respectively, and the intermediate portion of the support shaft 44d penetrates the large diameter portion 44c of the fastening shaft portion 44a. That is, the connecting plate portions 47 and 47 are formed with insertion holes 47a through which the upper portion and the lower portion of the support shaft 44d can be inserted. An upper portion and a lower portion of the support shaft 44d are inserted into each insertion hole 47a, and in this insertion state, the support shaft 44d is relative to the connecting plate portions 47, 47 around the center line of the support shaft 44d. It is rotatable to. The upper end portion and the lower end portion of the support shaft 44d have a retaining portion (not shown), and are formed so as not to be pulled out from the insertion holes 47a of the connecting plate portions 47, 47. Further, an insertion hole (not shown) through which an intermediate portion of the support shaft 44d can be inserted is formed in the large diameter portion 44c of the fastening shaft portion 44a. With the intermediate portion of the support shaft 44d inserted into the insertion hole formed in the large diameter portion 44c, the support shaft 44d can rotate relative to the large diameter portion 44c around the center line of the support shaft 44d. It has become.

By rotating the fastening shaft portion 44a, as shown in FIG. 10 and the like, the fastening shaft portion 44a is inserted into the shaft portion insertion notch 46a of the locking plate portion 46, and as shown in FIG. The fastening shaft portion 44a can be switched to a state in which the fastening shaft portion 44a is removed from the shaft portion insertion notch 46a of the locking plate portion 46. When the nut 44b is tightened with the fastening shaft portion 44a inserted into the shaft portion insertion notch 46a of the locking plate portion 46, the tip end side of the first pinching member 41 and the tip end side of the second pinching member 42 are engaged. It is fastened in the approaching direction.

As shown in FIG. 9, the first guided portion 80 is fixed to the first holding member 41 of the first upper clamp 40 and projects upward from the first holding member 41. That is, the first guided portion 80 includes a fixing plate portion 81 extending upward from the upper surface of the first holding member 41, a front side extending plate portion 82 extending from the fixing plate portion 81, and a back side extending plate portion 83. (Shown in FIG. 10). The lower end portion of the fixing plate portion 81 is fixed to a portion of the upper surface of the first holding member 41 that is separated outward from the first contact surface portion 41d. The fixed plate portion 81 is formed so as to surround the first contact surface portion 41d as a whole, and includes an intermediate plate portion 81a, a tip side plate portion 81b protruding from the intermediate plate portion 81a toward the tip side, and an intermediate plate portion. It is provided with a proximal end side plate portion 81c projecting from 81a toward the proximal end side. The tip end side plate portion 81b is inclined so as to be located on the second holding member 42 side as it approaches the tip in the protruding direction, and the proximal end side plate portion 81c is also positioned on the second holding member 42 side as it approaches the tip in the protruding direction. It is tilted to do.

The front extending plate portion 82 extends from the tip portion of the tip side plate portion 81b in the protruding direction toward the second holding member 42 side. Further, the back extending plate portion 83 extends from the tip end portion of the base end side plate portion 81c in the protruding direction toward the second holding member 42 side. As shown by a virtual line in FIG. 11, the first single tube 101 is inserted between the front side extension plate portion 82 and the back side extension plate portion 83. The front surface of the temporary scaffold 100 is shown in FIG. 5, and when viewed from the direction shown in FIG. 5, the front view of the first lumber 10 and the first single tube 101 is taken. In the plan view shown in FIGS. 10 and 11, the front side is the lower side of FIGS. 10 and 11, and the back side (back surface side) is the upper side of FIGS. 10 and 11. Therefore, the front extending plate portion 82 is directed along the width direction of the temporary scaffold 100 until it reaches the front side of the first single pipe 101 in the front view of the first diagonal member 10 and the first single pipe 101 (temporary scaffold 100). Extends in a direction substantially parallel to the width direction of. As a result, the front extending portion 82 is positioned so as to be in contact with the front side of the first single tube 101, and is arranged so as to cover the first single tube 101 from the front side.

Further, the back extending plate portion 83 is temporarily installed until it reaches the back side of the first single tube 101 in the rear view of the first diagonal member 10 and the first single tube 101 (when viewed from the back side of the temporary scaffold 100). It extends in the direction along the width direction of the scaffold 100. As a result, the back extending portion 83 is positioned so as to be in contact with the back side of the first single tube 101, and is arranged so as to cover the first single tube 101 from the back side.

The front-side extension plate portion 82 and the back-side extension portion 83 are arranged so as to face each other with a predetermined distance from each other, and extend substantially in parallel with each other. The front-side extension plate portion 82 and the back-side extension portion 83 may be formed so as to be separated from each other toward the tip end side in the extension direction. The distance between the front extending plate portion 82 and the back extending portion 83 is set to be equal to or larger than the outer diameter of the first single tube 101. As a result, the space between the tip of the front extension plate 82 and the tip of the back extension 83 is opened, and the first single tube 101 is connected to the front extension plate from this open portion. It can be inserted between the portion 82 and the back extending portion 83. The front extending plate portion 82 and the back extending portion 83 may be curved along the outer peripheral surface of the first single tube 101.

The second guided portion 90 shown in FIG. 1 is configured in the same manner as the first guided portion 80. Since the first upper clamp 40 to which the first guided portion 80 is fixed can be used as the second upper clamp 60 by turning it upside down, the second guided portion 80 is turned upside down. It becomes the guided portion 90. Therefore, the second guided portion 90 is arranged so as to project downward from the second upper clamp 60. As shown in FIG. 1, the second guided portion 90 also includes a fixing plate portion 91, a front side extension plate portion 92, and a back side extension plate portion (not shown), and the front side extension plate portion. 92 is arranged on the front side of the second single tube 102, and the back extending plate portion is arranged on the back side of the second single tube 102. The second guided portion 90 may be provided so as to project upward from the second upper clamp 60.

FIG. 12 is a front view of the first lower clamp 50. As described above, since the first lower clamp 50 is configured in the same manner as the first upper clamp 40, it includes a first clamp member 51 and a second clamp member 52, a connecting member 53, and a fastening member 54. ing. The first sandwiching member 51 has a first upper plate portion 51a, a first lower plate portion 51b, and a first vertical plate portion 51c. The first vertical plate portion 51c is provided with a mounting plate portion 55 having an insertion hole 55a. The first sandwiching member 51 is provided with a locking plate portion 56 in which a notch portion 56a for inserting a shaft portion is formed. Further, the second holding member 52 has a second upper plate portion 52a, a second lower plate portion 52b, and a second vertical plate portion 52c.

The connecting member 53 has an upper retaining portion 53a and a lower retaining portion 53b. Connecting plate portions 57 and 57 to which the fastening shaft portion 54a is connected are provided on the tip end side of the second upper plate portion 52a and the second lower plate portion 52b, respectively. The large diameter portion 54c of the fastening shaft portion 54a is rotatable by the support shaft 54d. When the nut 54b is tightened with the fastening shaft portion 54a inserted into the shaft portion insertion notch 56a of the locking plate portion 56, the tip end side of the first pinching member 51 and the tip end side of the second pinching member 52 become It is fastened in the approaching direction.

(Construction procedure)
Next, the construction procedure of the temporary scaffolding 100 will be described. First, as shown in FIG. 2, the single tube base 105 and the first to fourth single tubes 101 to 104 are installed, and the root entanglement 106 is installed.

After that, the first single pipe 101 and the second single pipe scaffold 102 are connected, the second single pipe 102 and the third single pipe scaffold 103 are connected, and the third single pipe 103 is connected by using the first floor brace 107. And the 4th single pipe scaffold 104 are connected. As described above, the installation of the first floor brace 107 is completed. The first-floor brace 107 can be connected to the single pipes 101 to 104 by using the clamps 40, 50, 60, 70 and the like.

When the installation of the 1st floor brace 107 is completed, before installing the scaffolding plate 110 on the 2nd floor, as shown in FIG. 3, the leading brace 1 for single pipe is placed on the 2nd floor prior to the installation of the scaffolding plate 110. Install. At this time, since the scaffolding board 110 is not yet installed on the second floor portion, the worker moves the single pipe leading brace 1 from the downstairs (first floor) to the upstairs (second floor). That is, first, the worker stands on the ground, holds the lower portions of the first lumber 10 and the second lumber 20 of the single pipe leading brace 1, and then the first guided portion on the upper part of the first lumber 10. The first single tube 101 is inserted between the front extending portion 82 and the back extending portion 83 of the 80. Further, a second single tube 102 is inserted between the front side extension portion 92 and the back side extension portion (not shown) of the second guided portion 90 at the upper part of the second diagonal member 20. The first upper clamp 40, the first lower clamp 50, the second upper clamp 60, and the second lower clamp 70 are left in an open state.

After that, the worker raises the lumber 10 and the second lumber 20 while holding the lower portions. At this time, since the first lumber 10 is located away from the upper part of the first lumber 10, the first lumber 10 tends to wobble, but in this example, the front extending portion 82 is on the outer peripheral surface of the first single tube 101. On the other hand, since the extending portion 83 on the back surface side comes into contact with the outer peripheral surface of the first single tube 101 from the back surface side, the first slanted lumber 10 is guided upward by the first single tube 101. Will be done.

Further, although the second diagonal member 20 is also prone to wobbling, the front side extending portion 92 on the second diagonal member 20 side comes into contact with the outer peripheral surface of the second single pipe 102 from the front side, and the back side extending portion. Is in contact with the outer peripheral surface of the second single tube 102 from the back surface side, so that the second diagonal member 20 is guided upward by the second single tube 102. As a result, the first slanted lumber 10 and the second slanted lumber 20 are suppressed from falling to the front side and the second slanted lumber 20 to the back side, so that the first slanted lumber 10 and the second slanted lumber 20 are smoothly moved upward. be able to. It should be noted that the first guided portion 80 may be provided only on the upper portion of the first diagonal member 10 without providing the second guided portion 90 on the upper portion of the second diagonal member 20. In this case, only the first lumber 10 is guided by the first single pipe 101, but by guiding the first lumber 10, the second lumber 20 is also easily moved in the same direction. It is possible and the workability is good.

After moving the single tube leading brace 1 to the second floor, the first lower clamp 50 is fixed to the first single tube 101, and the second lower clamp 70 is fixed to the second single tube 102. When fixing the first lower clamp 50 to the first single tube 101, after arranging the first single tube 101 between the first holding member 41 and the second holding member 42 in the open state, the first holding is performed. The member 41 and the second clamp member 42 are relatively rotated, and the first single tube 101 is clamped by the first clamp member 41 and the second clamp member 42. Then, after inserting the fastening shaft portion 44a into the shaft portion insertion notch portion 46a of the locking plate portion 46, the nut 44b is tightened. The same applies when the second lower clamp 70 is fixed to the second single tube 102.

As a result, the lower portion of the single tube leading brace 1 is firmly fixed to the first single tube 101 and the second single tube 102. At this time, since the first upper clamp 40 and the second upper clamp 60 are not fixed, the upper portion of the single tube leading brace 1 becomes free, but the first guided portion 80 and the second guided portion 90 provide a free state. The collapse of the leading brace 1 for a single tube is suppressed.

Next, as shown in FIG. 4, the leading brace 1 for single pipes connecting the second single pipe 102 and the third single pipe 103 is similarly moved to the second floor, and then the second single pipe 102 and the third single pipe. Connect to the tube 103. Further, the leading brace 1 for a single pipe connecting the third single pipe 103 and the fourth single pipe 104 is similarly moved to the second floor, and then connected to the third single pipe 103 and the fourth single pipe 104. In this way, after installing the leading brace 1 for a single pipe on the second floor portion, the cloth material 300 extending in the width direction of the temporary scaffold 100 is installed. Further, a rolling board 301 made of a single pipe installed on the cloth material 300 can be used, and the scaffolding plate 110 can be installed on the rolling bar 301. As shown in FIG. 5, scaffolding boards 110 on all the second floors are installed. After the installation of the scaffolding plate 110 on the second floor is completed, the first upper clamp 40 and the second upper clamp 60 are fixed to the first single pipe 101 and the second single pipe 102, respectively.

Further, although not shown, after the scaffolding board 110 on the second floor is installed, if there is a scaffolding board 110 on the third floor, stand on the scaffolding board 110 on the second floor prior to the installation of the scaffolding board on the third floor. The worker who is working moves the leading brace 1 for single pipe from the 2nd floor to the 3rd floor and installs it.

(Action and effect of the embodiment)
As described above, according to this embodiment, when constructing the temporary scaffolding 100 on the multi-story floor, the leading brace 1 for a single pipe is moved from the downstairs to the upstairs prior to the installation of the scaffolding plate 110 on the upper floor. When the scaffold is raised upstairs, the first guided portion 80 provided on the upper part of the single tube leading brace 1 comes into contact with the outer peripheral surface of the first single tube 101 and is guided upward by the outer peripheral surface. Since the second guided portion 90 comes into contact with the outer peripheral surface of the second single pipe 102 and is guided upward by the outer peripheral surface, the leading brace 1 for a single pipe is provided along the first single pipe 101 and the second single pipe 102. It will be possible to move it upward in a stable state. As a result, the workability of the leading brace 1 for a single pipe is improved, and installation in a short time becomes possible.

The above embodiments are merely exemplary in all respects and should not be construed in a limited way. Further, all modifications and modifications belonging to the equivalent scope of the claims are within the scope of the present invention.

As described above, the leading brace for a single-tube scaffold according to the present invention can be used, for example, when constructing a temporary scaffold on a multi-story floor.

1 Leading brace for single-tube scaffolding 10 1st diagonal member 20 2nd diagonal member 30 Handrail 40 1st upper clamp 50 1st lower clamp 60 2nd upper clamp 70 2nd lower clamp 80 1st guided portion 82 Front side Extension plate part 83 Back side extension plate part 90 Second guided part 100 Temporary scaffolding 101 First single pipe 102 Second single pipe

Claims (10)

The first single pipe and the second single pipe, which extend in the vertical direction and are installed separately in the horizontal direction, are arranged so as to intersect each other, and connect the first single pipe and the second single pipe. In the leading brace for single-tube scaffolding equipped with the first and second diagonal members
On the upper part of the first diagonal member, a first upper clamp fixed to the first single pipe and a first cover that comes into contact with the outer peripheral surface of the first single pipe and is guided in the vertical direction by the outer peripheral surface. A guide section is provided,
A first lower clamp fixed to the first single tube is provided at the lower part of the second diagonal member.
A second upper clamp fixed to the second single tube is provided on the upper part of the second diagonal member.
A leading brace for a single-tube scaffold, characterized in that a second lower clamp fixed to the second single-tube is provided at the lower portion of the first diagonal member. In the preceding brace for single-tube scaffolding according to claim 1,
The first guided portion is a leading brace for a single-tube scaffold, characterized in that it is fixed to the first upper clamp. In the preceding brace for single-tube scaffolding according to claim 2.
The first upper clamp abuts on the outer peripheral surface of the first single tube from one side and the other side in the radial direction of the first single tube, respectively, and holds the first single tube in the radial direction. With the member and the second holding member,
The other end side of the first holding member and the other end side of the second holding member can be rotated in a direction in which one end side of the first holding member and one end side of the second holding member are in contact with each other. The connecting member to be connected and
A fastening member for fastening one end side of the first holding member and one end side of the second holding member in a direction approaching each other is provided.
The portion between one end side and the other end side of the first holding member is fixed to the upper part of the first diagonal member.
The first guided portion is a leading brace for a single-tube scaffold, characterized in that it is fixed to the first holding member. In the preceding brace for single-tube scaffolding according to claim 3.
The first guided portion is a leading brace for a single-tube scaffold, characterized in that it projects upward from the first holding member. In the preceding brace for single-tube scaffolding according to any one of claims 1 to 4.
The first guided portion is characterized by having a front side extending portion extending to the front side of the first single pipe in front view of the first diagonal lumber and the first single pipe. Leading brace for scaffolding. In the preceding brace for single-tube scaffolding according to claim 5.
The first guided portion has a single tube extending to the back side of the first single tube in a rear view of the first slant and the first single tube. Leading brace for scaffolding. In the preceding brace for single-tube scaffolding according to any one of claims 1 to 6.
A single-tube scaffolding is provided on the upper portion of the second diagonal member with a second guided portion that comes into contact with the outer peripheral surface of the second single-tube and is guided in the vertical direction by the outer peripheral surface. For leading brace. In the preceding brace for single-tube scaffolding according to any one of claims 1 to 7.
A single-tube scaffolding provided with a handrail extending from the upper part of the first slant to the upper part of the second slant and connected to the upper part of the first slant and the upper part of the second slant. For leading braces. The first and second single pipes that extend vertically and are installed separately in the horizontal direction,
It has a first diagonal member and a second diagonal member which are arranged so as to intersect each other between the first single tube and the second single tube and connect the first single tube and the second single tube. In a temporary scaffold with a leading brace for single-tube scaffolding
On the upper part of the first diagonal member, a first upper clamp fixed to the first single pipe and a first cover that comes into contact with the outer peripheral surface of the first single pipe and is guided in the vertical direction by the outer peripheral surface. A guide section is provided,
A first lower clamp fixed to the first single tube is provided at the lower part of the second diagonal member.
A second upper clamp fixed to the second single tube is provided on the upper part of the second diagonal member.
A temporary scaffolding characterized in that a second lower clamp fixed to the second single pipe is provided at the lower portion of the first diagonal member. The first single pipe and the second single pipe, which extend in the vertical direction and are installed separately in the horizontal direction, are arranged so as to intersect each other, and connect the first single pipe and the second single pipe. A handrail extending from the upper part of the first diagonal member to the upper part of the second diagonal member and connected to the upper part of the first diagonal member and the upper part of the second diagonal member. In the leading brace for single-tube scaffolding equipped with
On the side of the first single tube of the handrail, the first upper clamp fixed to the first single tube and the outer peripheral surface of the first single tube are in contact with each other and guided in the vertical direction by the outer peripheral surface. 1 Guided part is provided,
A first lower clamp fixed to the first single tube is provided at the lower part of the second diagonal member.
A second upper clamp fixed to the second single tube is provided on the second single tube side of the handrail.
A leading brace for a single-tube scaffold, characterized in that a second lower clamp fixed to the second single-tube is provided at the lower portion of the first diagonal member.

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