JP7523811B2 - Suspended scaffolding - Google Patents

Description

This disclosure relates to suspended scaffolding that is used, for example, while suspended from various buildings, etc.

A typical suspended scaffold is constructed by arranging beam members made of multiple pipes in parallel and hanging them from various buildings, placing cross members between the beam members, and placing flooring that will serve as a work floor on top of the cross members.

For example, the suspended scaffolding disclosed in Patent Document 1 comprises multiple beam units arranged parallel to one another and scaffolding panels that are spanned between the beam units. The beam units are constructed by connecting multiple main body parts in the longitudinal direction. The main body parts have a truss structure made up of a pair of left and right upper chord members that extend horizontally, a pair of left and right lower chord members that extend horizontally below the left and right upper chord members, and multiple diagonal members that are spanned between the upper chord members and the lower chord members.

The suspended scaffolding of Patent Document 1 allows an extension beam unit to be connected to an existing beam unit. When connecting an extension beam unit to an existing beam unit, a scaffolding panel is installed on the existing beam unit, and then the extension beam unit is placed along the edge of the scaffolding panel and connected to the tip of the existing beam unit with a connecting pin. The extension beam unit is then rotated around the connecting pin and placed in series on the extension line of the existing beam unit, and then fixed with a fixing pin. After the extension beam unit is fixed, a scaffolding panel is installed on top of the extension beam unit. A suspended scaffolding that allows the scaffolding to be expanded in sequence while the existing beam unit is suspended in this way is called a pre-floor construction type suspended scaffolding.

Utility Model Registration No. 3223667

When constructing a suspended scaffold, an extension beam unit is first connected to the existing beam unit, and then another extension beam unit is connected to this extension beam unit, and this process is repeated to expand the work floor. In order to perform the expansion in this manner, the above-mentioned connecting pins are required.

In addition, the panel materials called antis that make up the work floor are also placed on the beam units in sequence, but installing these panel materials safely and in the desired position can be problematic. In particular, if a connecting pin is provided between the existing beam unit and the extension beam unit as in Patent Document 1, there is a risk that the connecting pin will get in the way when installing the antis from the existing beam unit side to the extension beam unit side.

The present disclosure has been made in consideration of these points, and its purpose is to enable panel materials to be installed safely and in desired positions when the deck beams that make up the suspended scaffolding are rotatably connected.

In order to achieve the above object, in the first aspect of the present disclosure, a suspended scaffolding can be provided that includes a panel material constituting a work floor, a plurality of deck beams on which the panel material is installed, and a suspension member that suspends the deck beam from a building. The deck beam includes a first deck beam and a second deck beam that extend horizontally and are installed at the same height. The suspended scaffolding includes a slide member that is hung on the first deck beam and slides in the direction in which the first deck beam extends, and a beam joint that connects the end of the first deck beam and the end of the second deck beam to be rotatable around an axis that extends in the vertical direction while being spaced apart from each other in the horizontal direction. The longitudinal end of the panel material is connected to the slide member. The beam joint is provided with a guide portion that extends from the first deck beam side to the second deck beam side and is installed at the same height as the first deck beam and the second deck beam, and that guides the slide member from the first deck beam side to the second deck beam side.

This configuration allows a suspended scaffold to be systemized using multiple deck beams and panel materials, significantly reducing the time required for construction compared to conventional single-tube suspended scaffolds. In addition, because the first deck beam and the second deck beam are rotatably connected by a beam joint, for example, the extension deck beam can be made rotatable relative to the existing deck beam, making it easy to expand the pre-floor-constructed suspended scaffold.

Furthermore, when connecting the second deck beam to the first deck beam and extending it horizontally, if the end of the panel material is connected to the slide member arranged on the base end side of the first deck beam, the slide member is guided by the guide part from the first deck beam side to the second deck beam side by simply pushing the panel material towards the tip side, making it possible to send the panel material to the tip side. In other words, while the worker is at the base end side of the first deck beam, the panel material can be safely sent to the tip side and installed in the desired position.

In a second aspect of the present disclosure, the first deck beam and the second deck beam may include an upper pipe member, a lower pipe member disposed below and away from the upper pipe member and extending parallel to the upper pipe member, and a connecting member fixed to the upper pipe member and the lower pipe member and connecting the upper pipe member and the lower pipe member. The slide member can be hung on the upper pipe member.

With this configuration, the first and second deck beams that support the load of the panel material are equipped with upper and lower pipe materials, giving them high strength and ensuring sufficient load-bearing capacity.

In a third aspect of the present disclosure, a first connecting tube portion extending in the vertical direction may be fixed to the end of the first deck beam, and a second connecting tube portion extending in the vertical direction may be fixed to the end of the second deck beam. The beam joint may include a cylindrical joint body disposed between the first connecting tube portion and the second connecting tube portion and extending in the vertical direction, a first connecting plate portion fixed to the joint body and arranged so as to overlap the upper end of the first connecting tube portion, a second connecting plate portion fixed to the joint body and arranged so as to overlap the upper end of the second connecting tube portion, a first connecting pin penetrating the first connecting plate portion and inserted into the first connecting tube portion, and a second connecting pin penetrating the second connecting plate portion and inserted into the second connecting tube portion. The guide portion may be formed to extend from a position above the upper end of the first connecting pin to a position above the upper end of the second connecting pin.

According to this configuration, the first connecting tube part of the first deck beam and the second connecting tube part of the second deck beam can be rotatably connected by the first connecting pin and the second connecting pin. In this case, since the guide part extends from above the first connecting pin to above the second connecting pin, the slide member does not interfere with the first connecting pin or the second connecting pin, and the slide member can slide smoothly.

The guide portion according to the fourth aspect of the present disclosure may be provided in a part of an upper component that is a separate member from the joint body. The upper component may be provided with an attachment tube that is inserted into the joint body from above.

With this configuration, by making the guide part a separate member from the joint body, the degree of freedom in designing the shape is increased, and the shape can be designed to smoothly guide the sliding member. In this case, by inserting the mounting tube part into the joint body, the displacement of the guide part can be suppressed, and the guide part can be stabilized.

In a fifth aspect of the present disclosure, the portion directly above the upper end of the first connecting pin in the upper component and the portion directly above the upper end of the second connecting pin in the upper component may each be open.

With this configuration, the guide portion does not get in the way when inserting the first connecting pin into the first connecting tube portion, making the work easy. The same applies to the second connecting pin.

The upper component according to the sixth aspect of the present disclosure may include a first fixed plate portion arranged so as to overlap the first connecting plate portion, and a second fixed plate portion arranged so as to overlap the second connecting plate portion. The first connecting pin may be formed to pass through the first fixing plate portion, and the second connecting pin may be formed to pass through the second fixing plate portion.

With this configuration, the first and second connecting pins can be used to fix the upper component to the joint body at multiple locations, preventing the upper component from wobbling.

As explained above, a guide section is provided on the top of the beam joint that rotatably connects the first deck beam and the second deck beam, so that the slide member to which the end of the panel material is connected can be guided from the first deck beam side to the second deck beam side by the guide section. This allows the panel material to be installed safely and in the desired position.

FIG. 2 is a side view of the suspended scaffolding according to the embodiment. This is an oblique view from above of a suspended scaffolding in the process of being constructed. FIG. 4 is a side view of the right first deck beam. FIG. 13 is a plan view of the right first deck beam. FIG. 11 is a side view showing the vicinity of the connection between the right first deck beam and the right second deck beam. FIG. 11 is an exploded perspective view of the beam joint showing the state before the right first deck beam and the right second deck beam are connected. FIG. 13 is a partial cross-sectional view of the right second deck beam and beam joint. FIG. FIG. 4 is a front view of the slide member, showing the state in which it is fixed to the upper pipe material. FIG. 13 is a side view of the slide member with the wedge omitted. FIG. FIG. 9 is a view corresponding to FIG. 8 according to a first modified example. FIG. FIG. 13 is a perspective view of a joint of another embodiment.

The following describes in detail an embodiment of the present invention with reference to the drawings. Note that the following description of the preferred embodiment is essentially merely an example and is not intended to limit the present invention, its applications, or its uses.

Figure 1 is a side view of a suspended scaffolding 1 according to an embodiment of the present invention. The suspended scaffolding 1 includes a deck 2, a plurality of panel materials 3 constituting a work floor, and a plurality of hanging members 4. The panel materials 3 are, for example, made of wooden scaffolding boards, steel scaffolding boards, antis (cloth frames with boards), etc., and are not particularly limited as long as they are capable of constituting a work floor that serves as a scaffolding for work. The size and shape of the panel materials 3 can also be set arbitrarily according to the size and shape of the deck 2. The number of panel materials 3 can also be changed according to the size and shape of the deck 2. In this embodiment, the panel material 3 is an anti, and as shown in Figure 2, it has a plate material 3a that is long in a predetermined direction that is rectangular or can be approximated to a rectangle, and an engagement portion 3b that is provided at both ends of the plate material 3a in the longitudinal direction (one end and the other end of the plate material 3a) and engages with a cloth material to be described later. Figure 2 shows a state in the middle of constructing the suspended scaffolding 1, and the panel material 3 is in the middle of being installed. Also, Figure 2 shows each member diagrammatically, and the detailed structure of each member is omitted.

Two engaging parts 3b are provided at one end of the plate material 3a with a gap between them in the width direction, and two engaging parts 3b are also provided at the other end of the plate material 3a with a gap between them in the width direction. These four engaging parts 3b are the same and are formed in a hook shape that opens downward.

The hanging member 4 shown in FIG. 1 is a member for suspending the deck beams 21-26 (described later) that constitute the deck 2 from a building, and can be formed, for example, from a metal chain or the like. The upper part of the hanging member 4 is fixed, for example, directly to a building or the like, or indirectly via a hanging hardware or the like. The deck beams 21, 22, 25, 26, etc. are fixed to the lower part of the hanging member 4 via a connecting member 5. The connecting member 5 is formed in a cylindrical shape through which the hanging member 4 is inserted, and with the hanging member 4 inserted, the hanging member 4 can be fixed to the connecting member 5 with a pin (not shown) or the like. The connecting member 5 is also fixed to the ends of the deck beams 21, 22, 25, 26.

The number of hanging members 4 can be any number depending on the size and shape of the deck 2. In addition, the length of the hanging members 4 can be changed to any length depending on the building, work content, etc. The deck beams 21-26, panel material 3, and hanging members 4 are scaffolding components that make up the suspended scaffolding 1.

The suspended scaffolding 1 is constructed at the construction sites of various buildings and at various civil engineering work sites according to the type and content of the work. For example, the suspended scaffolding 1 can also be used for bridge erection and bridge repair work. In addition to construction work, the suspended scaffolding 1 is also constructed for maintenance work. The suspended scaffolding 1 is suitable for construction at the construction sites and maintenance work sites of various plants, such as large-scale production equipment and factory facilities. In various plants, multiple pipes are installed in a complicated manner outside the building, and the suspended scaffolding 1 according to this embodiment can be constructed when work on these pipes or work on the building is to be performed.

As shown in FIG. 1, the deck 2 comprises a first deck 2A, a second deck 2B, and a third deck 2C. The deck 2 may be composed of only the first deck 2A, or may be composed of any number of decks 2A-2C, and the number is not limited to three. The first deck 2A is a deck that is assembled separately from the second deck 2B and the third deck 2C, and is also called the first deck. The deck 2 may also be in a form that extends in the depth direction of the paper.

That is, when constructing the deck 2, the first deck 2A is assembled, for example, on the ground, and then a process of suspending it from the building by the suspension member 4 is performed. By performing this process, the work floor can be formed by the panel material 3 before the second deck 2B and the third deck 2C. This is the first deck assembly process. After the first deck assembly process, workers go up to the work floor of the first deck 2A to assemble the second deck 2B, and after the assembly of the second deck 2B is completed, workers go up to the work floor of the second deck 2B to assemble the third deck 2C, so that the work floor can be expanded sequentially. In other words, the suspended scaffolding 1 of this embodiment is a pre-floor construction type suspended scaffolding that can expand the scaffolding sequentially while the existing deck (first deck 2A) is suspended. The direction in which the first deck 2A, the second deck 2B, and the third deck 2C are lined up is the expansion direction of the scaffolding, which is also called the construction direction. The front side of the construction direction is called the base end side, and the back side is called the tip side. Additionally, the side that is right when looking at the deck 2 from the base end is simply referred to as the right, and the side that is left is simply referred to as the left. Although not shown, handrails, baseboards, fabric materials, etc. may be attached to the suspended scaffolding 1 as necessary.

As shown in FIG. 2, the first deck 2A includes a right-side first deck beam 21 and a left-side first deck beam 22. The second deck 2B includes a right-side second deck beam 23 and a left-side second deck beam 24. The third deck 2C includes a right-side third deck beam 25 and a left-side third deck beam 26.

The right side first deck beam 21 constituting the first deck 2A is a member located on the right side of the first deck 2A and extends horizontally in the construction direction. The left side first deck beam 22 is a member located on the left side of the first deck 2A and extends horizontally in the construction direction. The right side first deck beam 21 and the left side first deck beam 22 face each other in the left-right direction and are arranged parallel to each other. The right side first deck beam 21 and the left side first deck beam 22 are the same, and therefore the lengths of the right side first deck beam 21 and the left side first deck beam 22 are the same.

The right second deck beam 23 constituting the second deck 2B is a member located on the right side of the second deck 2B and extends horizontally in the construction direction. The left second deck beam 24 is a member located on the left side of the second deck 2B and extends horizontally in the construction direction. The right second deck beam 23 and the left second deck beam 24 face each other in the left-right direction and are arranged parallel to each other. The right second deck beam 23 and the left second deck beam 24 are the same as the right first deck beam 21 and the left first deck beam 22, respectively.

The base end of the right-side second deck beam 23 is connected to the tip end of the right-side first deck beam 21 by a beam joint 50 (shown in Figures 5 to 7) described below so that it can rotate around an axis extending in the vertical direction. The base end of the right-side second deck beam 23 and the tip end of the right-side first deck beam 21 are connected with a horizontal gap between them due to the presence of the beam joint 50. Specifically, the base end of the right-side second deck beam 23 and the tip end of the right-side first deck beam 21 are arranged with a gap between them in the construction direction.

The base end of the left second deck beam 24 is rotatably connected to the tip end of the left first deck beam 22 by another beam joint 50 configured in a similar manner. The base end of the left second deck beam 24 and the tip end of the left first deck beam 22 are spaced apart in the construction direction.

The right third deck beam 25 constituting the third deck 2C is a member located on the right side of the third deck 2C and extends horizontally in the construction direction. The left third deck beam 26 is a member located on the left side of the third deck 2C and extends horizontally in the construction direction. The right third deck beam 25 and the left third deck beam 26 face each other in the left-right direction and are arranged parallel to each other. The right third deck beam 25 and the left third deck beam 26 are the same as the right first deck beam 21 and the left first deck beam 22, respectively.

The base end of the right-side third deck beam 25 is connected to the tip end of the right-side second deck beam 23 by yet another beam joint 50 so that it can rotate around an axis extending in the vertical direction. In addition, the base end of the left-side third deck beam 26 is connected to the tip end of the left-side second deck beam 24 by yet another beam joint 50 so that it can rotate.

The length of the deck beams 21-26 is not particularly limited and can be set arbitrarily. For example, the lengths can be 610 mm, 914 mm, 1219 mm, 1524 mm, 1829 mm, etc., from shortest to longest. In this case, deck beams of five different lengths can be arbitrarily combined to form the decks 2A-2C. The above dimensions can be, for example, the dimensions from center to center of the beam joints 50 that can be attached to both ends of the deck beam. By determining the specifications of the deck beams 21-26 in advance, such as the length, width, and vertical dimensions, the deck beams 21-26 can be made into standard products, and a systemized suspended scaffolding 1 can be constructed.

Since the deck beams 21 to 26 are all the same, the structure of the right-side first deck beam 21 will be described in detail below with reference to Figures 3 and 4. The right-side first deck beam 21 comprises an upper pipe material 40, a lower pipe material 41, a one-side connecting material 42, an other-side connecting material 43, and an intermediate connecting material 44. The upper pipe material 40 and the lower pipe material 41 are made of, for example, steel pipes with a circular cross section, and are specifically, members such as single-pipe building materials and fabric materials that have traditionally been used to make temporary scaffolding. Therefore, the outer diameter of the upper pipe material 40 and the lower pipe material 41 is the same as that of the single-pipe building materials and fabric materials.

The upper pipe material 40 extends horizontally. The lower pipe material 41 is positioned below and away from the upper pipe material 40 and extends parallel to the upper pipe material 40. The outer diameter of the upper pipe material 40 and the outer diameter of the lower pipe material 41 are the same, but may be different. The length of the upper pipe material 40 and the length of the lower pipe material 41 are the same. The direction perpendicular to the longitudinal direction of the first deck beam 21 in a plan view is defined as the left-right direction of the first deck beam 21, and the left-right direction of the first deck beam 21 can also be called the width direction of the first deck beam 21.

The one-side connecting member 42 and the other-side connecting member 43 are fixed to the upper pipe material 40 and the lower pipe material 41, respectively, by, for example, welding, and are members for connecting the upper pipe material 40 and the lower pipe material 41. The one-side connecting member 42 extends from one end of the upper pipe material 40 to one end of the lower pipe material 41, and has a pair of left and right metal plates 42a, 42b arranged at a distance from each other in the left-right direction, a one-side connecting tube portion 42c, and an intermediate plate member 42d for fixing the one-side connecting tube portion 42c to the plates 42a, 42b. The one-side connecting tube portion 42c is fixed to one end of the upper pipe material 40 and one end of the lower pipe material 41 via the intermediate plate member 42d and the plates 42a, 42b.

The left plate material 42a extends continuously from the lower portion of the outer peripheral surface of one end of the upper pipe material 40 to the upper portion of the outer peripheral surface of one end of the lower pipe material 41, and also extends in the longitudinal direction of the first deck beam 21, and is offset to the left from the axis of the upper pipe material 40 and the lower pipe material 41 in a plan view. The right plate material 42b is parallel to the left plate material 42a, and is offset to the right from the axis of the upper pipe material 40 and the lower pipe material 41 in a plan view. In the plan view shown in Figure 4, the left and right plate materials 42a, 42b are positioned so as to be hidden by the upper pipe material 40.

The intermediate plate 42d extends vertically along the plates 42a and 42b, and also extends in the longitudinal direction of the first deck beam 21. The vertical dimension of the intermediate plate 42d is set shorter than the vertical dimensions of the plates 42a and 42b. The base of the intermediate plate 42d is fixed to the plates 42a and 42b while being inserted between them. The tip of the intermediate plate 42d protrudes outward in the longitudinal direction of the first deck beam 21 from between the plates 42a and 42b, and is specifically located outward from one end of the upper pipe 40 and the lower pipe 41.

The one-side connecting tube portion 42c is composed of a cylindrical member extending in the vertical direction, and both ends in the vertical direction are open. The outer diameter of the one-side connecting tube portion 42c is set to be smaller than the outer diameters of the upper pipe material 40 and the lower pipe material 41. The outer surface of the one-side connecting tube portion 42c is fixed to the tip of the intermediate plate material 42d by welding or the like. In this fixed state, the one-side connecting tube portion 42c is positioned outward from one end of the upper pipe material 40 and the lower pipe material 41, and the extension line of the axis of the one-side connecting tube portion 42c and the extension line of the axis of the upper pipe material 40 are in a positional relationship perpendicular to each other. The upper end of the one-side connecting tube portion 42c is positioned below the lower part of the upper pipe material 40, and the lower end of the one-side connecting tube portion 42c is positioned above the upper part of the lower pipe material 41.

The other side connecting member 43 extends from the other end of the upper pipe member 40 to the other end of the lower pipe member 41, and has a pair of left and right metal plates 43a, 43b arranged at a distance from each other in the left-right direction, the other side connecting tube portion 43c, and an intermediate plate member 43d for fixing the other side connecting tube portion 43c to the plates 43a, 43b. The other side connecting tube portion 43c is fixed to the other end of the upper pipe member 40 and the other end of the lower pipe member 41 via the intermediate plate member 43d and the plates 43a, 43b. The other end side plates 43a, 43b, the other side connecting tube portion 43c, and the intermediate plate member 43d are the same as the one end side plates 42a, 42b, the one side connecting tube portion 42c, and the intermediate plate member 42d, respectively.

That is, the left plate material 43a extends continuously from the lower portion of the outer circumferential surface of the other end of the upper pipe material 40 to the upper portion of the outer circumferential surface of the other end of the lower pipe material 41, and also extends in the longitudinal direction of the first deck beam 21, and is offset to the left from the axis of the upper pipe material 40 and the lower pipe material 41 in a plan view. The right plate material 43b is parallel to the left plate material 43a, and is offset to the right from the axis of the upper pipe material 40 and the lower pipe material 41 in a plan view. In the plan view shown in FIG. 4, the left and right plate materials 43a, 43b are positioned so as to be hidden by the upper pipe material 40.

The intermediate plate 43d extends vertically along the plates 43a and 43b, and also extends in the longitudinal direction of the first deck beam 21. The vertical dimension of the intermediate plate 43d is set shorter than the vertical dimensions of the plates 43a and 43b. The base of the intermediate plate 43d is fixed to the plates 43a and 43b while being inserted between them. The tip of the intermediate plate 43d protrudes outward in the longitudinal direction of the first deck beam 21 from between the plates 43a and 43b, and is specifically located outward from the other ends of the upper pipe 40 and the lower pipe 41.

The other side connecting tube portion 43c is composed of a cylindrical member extending in the vertical direction, and both ends in the vertical direction are open. The outer diameter of the other side connecting tube portion 43c is set to be smaller than the outer diameters of the upper pipe material 40 and the lower pipe material 41. The outer surface of the other side connecting tube portion 43c is fixed to the tip of the intermediate plate material 43d by welding or the like. In this fixed state, the other side connecting tube portion 43c is positioned outward from the other ends of the upper pipe material 40 and the lower pipe material 41, and the extension line of the axis of the other side connecting tube portion 43c and the extension line of the axis of the upper pipe material 40 are in a positional relationship perpendicular to each other. The upper end of the other side connecting tube portion 43c is positioned below the lower part of the upper pipe material 40, and the lower end of the other side connecting tube portion 43c is positioned above the upper part of the lower pipe material 41.

The intermediate connecting member 44 extends from the longitudinal middle of the upper pipe member 40 to the longitudinal middle of the lower pipe member 41. The upper end of the intermediate connecting member 44 is fixed to the lower part of the outer circumferential surface of the upper pipe member 40. The lower end of the intermediate connecting member 44 is fixed to the outer circumferential surface of the lower pipe member 41. The intermediate connecting member 44 can also be fixed to the upper pipe member 40 and the lower pipe member 41 by welding or the like. Therefore, the upper pipe member 40 and the lower pipe member 41 are connected not only at both longitudinal ends but also at their middle parts, so that the right first deck beam 21 can ensure high strength. The intermediate connecting member 44 is formed so as not to protrude in either radial direction of the upper pipe member 40 in a plan view.

The number of intermediate connecting members 44 is not limited to one, but may be two or more. The intermediate connecting member 44 may have an insertion portion into which a wedge provided on the scaffolding component is inserted. If the upper pipe member 40 and the lower pipe member 41 are short, the intermediate connecting member 44 may be omitted.

The dimension in the left-right direction of the right-side first deck beam 21 is set shorter than the dimension in the up-down direction. That is, the right-side first deck beam 21 is made up of only one upper pipe material 40, and no other pipe material is arranged on the side of the upper pipe material 40. Also, there is only one lower pipe material 41, and no other pipe material is arranged on the side of the lower pipe material 41. And, these upper pipe material 40 and lower pipe material 41 are arranged so that they are not lined up in the left-right direction in a plan view. Specifically, the lower pipe material 41 is located directly below the upper pipe material 40, and therefore, in a plan view, the axis of the upper pipe material 40 and the axis of the lower pipe material 41 are in a positional relationship that overlaps. By arranging the upper pipe material 40 and the lower pipe material 41 in this way, the dimension in the left-right direction of the right-side first deck beam 21 becomes equal to the outer diameter of the upper pipe material 40 or the lower pipe material 41.

As shown in FIG. 2, the other deck beams 22-26 also have upper pipe members 40, lower pipe members 41, one-side connecting members 42, other-side connecting members 43, and intermediate connecting members 44. All deck beams 21-26 are installed at the same height. Therefore, all upper pipe members 40 of deck beams 21-26 are located at the same height, and all lower pipe members 41 are also located at the same height.

(Slide member and cloth material)
As shown in Fig. 2, the suspended scaffolding 1 includes a pair of slide members 80, 80 that are hung on the upper pipe material 40 of the right first deck beam 21 and the upper pipe material 40 of the left first deck beam 22, respectively, and slide in the axial direction of the upper pipe material 40, and a fabric material 90 that is connected to the pair of slide members 80, 80 and extends in the separation direction of the right first deck beam 21 and the left first deck beam 22. Although details will be described later, the slide member 80 is slidable from the upper pipe material 40 of the right first deck beam 21 to the upper pipe material 40 of the right second deck beam 23, and is slidable from the upper pipe material 40 of the right second deck beam 23 to the upper pipe material 40 of the right third deck beam 25. In addition, the slide member 80 is slidable from the upper pipe material 40 of the left first deck beam 22 to the upper pipe material 40 of the left second deck beam 24, and is also slidable from the upper pipe material 40 of the left second deck beam 24 to the upper pipe material 40 of the left third deck beam 26.

The panel material 3 is connected to the slide members 80, 80 via the cloth material 90. Specifically, the engagement portion 3b of the panel material 3 engages with the cloth material 90 while hanging from above, and is supported by the upper pipe material 40 via the slide members 80, 80 so that the panel material 3 does not fall downward in this engaged state.

The pair of slide members 80, 80 are the same. As shown in Figures 8 and 9, each slide member 80 has a main body 81, a pocket 82, and a wedge 83. The main body 81 is a part that is hung from above on the upper pipe material 40, and is slidable in the axial direction of the upper pipe material 40. The main body 81 has an upper plate 81a that is placed on the upper pipe material 40, and a first vertical plate 81b and a second vertical plate 81c that extend downward from parts of the upper plate 81a that correspond to both radial ends of the upper pipe material 40. The upper plate 81a extends in the axial direction along the top of the upper pipe material 40, and also extends in the direction corresponding to the radial direction (left and right direction).

As also shown in FIG. 9, the first vertical plate portion 81b extends downward from the end of the upper plate portion 81a located on the inside of the deck 2. The second vertical plate portion 81c extends downward from the end of the upper plate portion 81a located on the outside of the deck 2. The inward and outward directions of the deck 2 may be opposite to those shown in FIG. 9.

The first vertical plate portion 81b and the second vertical plate portion 81c are only connected at their upper ends by the upper plate portion 81a, and are open in both the downward direction and in the axial direction of the upper pipe material 40. The distance between the first vertical plate portion 81b and the second vertical plate portion 81c is set to be approximately the same from the upper end to the lower end, and is slightly wider than the outer diameter of the upper pipe material 40. This allows the upper pipe material 40 to be easily inserted between the first vertical plate portion 81b and the second vertical plate portion 81c from below the first vertical plate portion 81b and the second vertical plate portion 81c, making it possible to easily hang the slide member 80 on the upper pipe material 40. When the slide member 80 is hung on the upper pipe material 40, the downward load acting on the slide member 80 can be received by the upper pipe material 40 via the upper plate portion 81a. In addition, when the slide member 80 attempts to displace in the radial direction of the upper pipe material 40, the first vertical plate portion 81b or the second vertical plate portion 81c abuts against the outer surface of the upper pipe material 40, suppressing the displacement and preventing the slide member 80 from falling off.

The first vertical plate portion 81b and the second vertical plate portion 81c extend below the lower portion of the upper pipe material 40. The pocket 82 is a portion (connected portion) to which the end of the fabric material 90 is connected. That is, a wedge (not shown) that protrudes downward is provided at each end of the fabric material 90. The pocket 82 is open in the vertical direction and is configured so that the wedge of the fabric material 90 can be inserted from above. In this embodiment, the pocket 82 is provided on both the first vertical plate portion 81b and the second vertical plate portion 81c, but may be provided on only one of the first vertical plate portion 81b and the second vertical plate portion 81c.

The first vertical plate portion 81b and the second vertical plate portion 81c are respectively formed with a first wedge hole 81d and a second wedge hole 81e into which a wedge 83 that abuts against the lower part of the upper pipe material 40 is driven. The first wedge hole 81d is rectangular and penetrates the first vertical plate portion 81b in the thickness direction (horizontal direction). The second wedge hole 81e is also rectangular and penetrates the second vertical plate portion 81c in the thickness direction (horizontal direction). The lower edge portion of the first wedge hole 81d and the lower edge portion of the second wedge hole 81e are located at the same height and extend linearly in the axial direction of the upper pipe material 40. On the other hand, the upper edge portion of the first wedge hole 81d is located above the upper edge portion of the second wedge hole 81e and extends parallel to the lower edge portion. The widths of the first wedge hole 81d and the second wedge hole 81e (the dimensions in the direction corresponding to the axial direction of the upper pipe material 40) are set to be the same.

The length of the wedge 83 is set so that it reaches from the first wedge hole 81d to the second wedge hole 81e, protrudes from the first wedge hole 81d inwardly of the deck 2, and also protrudes from the second wedge hole 81e outwardly of the deck 2. The wedge 83 has a lower plate portion 83a that is long in the driving direction into the first wedge hole 81d, and a pair of side plate portions 83b, 83b that protrude upwardly from both ends of the lower plate portion 83a in the width direction. The vertical dimensions of the side plate portions 83b, 83b are set so that they become shorter as they approach the driving direction tip. Specifically, the vertical dimension of the driving direction tip of the side plate portions 83b, 83b is set so that it can be inserted into the second wedge hole 81e, but the vertical dimension of the driving direction base end of the side plate portions 83b, 83b is set longer than the vertical dimension of the first wedge hole 81d, so that the base end of the wedge 83 cannot pass through the first wedge hole 81d.

As shown in Figure 10, the lower plate portion 83a of the wedge 83 has a slit 83c extending in the driving direction. As shown in Figure 9, a wedge holder 81f is inserted into the slit 83c. The wedge holder 81f is composed of a rod-shaped member with both ends fixed to the first vertical plate portion 81b, and is intended to prevent the wedge 83 from falling out of the main body portion 81. When the wedge 83 is removed from the first wedge hole 81d and the second wedge hole 81e, the wedge 83 is in a hanging-down position (unfixed position) as shown by the imaginary line in Figure 9. On the other hand, when the wedge 83 is driven into the first wedge hole 81d and the second wedge hole 81e so as to assume the fixed position shown by the solid line in FIG. 9, the upper edge of the side plate portions 83b, 83b of the wedge 83 abuts against the lower pipe material 41 from below, and the lower pipe material 41 can be firmly sandwiched between the wedge 83 and the upper plate portion 81a in the vertical direction. This allows the sliding member 80 to be fixed so as not to move in the axial direction relative to the upper pipe material 40. The wedge holder 81f can be inserted into the slit 83c and then fixed to the first vertical plate portion 81b.

(Variation 1)
The slide member 80 can also be configured as modified example 1 shown in FIG. 12. The slide member 80 according to modified example 1 is different from the example shown in FIG. 8 only in the structure of the connected portion to which the end of the fabric material 90 is connected, and the other parts are the same. That is, the slide member 80 includes a plate material 84 extending in the horizontal direction, and the connected portion is configured by this plate material 84. An insertion hole 84a into which the wedge of the fabric material 90 is inserted is formed so as to penetrate the plate material 84 in the vertical direction. By inserting the wedge of the fabric material 90 into the insertion hole 84a, it becomes possible to connect the fabric material 90 to the slide member 80. The shape and size of the insertion hole 84a can be set according to the wedge of the fabric material 90, and are not limited to those shown in the figure.

(Rotary beam joint)
As shown in Fig. 5, the right-side first deck beam 21 and the right-side second deck beam 23 are connected by a rotary beam joint 50. In Fig. 5, the other-side connecting tube portion 43c of the right-side first deck beam 21 is a first connecting tube portion fixed to an end portion of the right-side first deck beam 21, and one-side connecting tube portion 42c of the right-side second deck beam 23 is a second connecting tube portion fixed to an end portion of the right-side second deck beam 23.

As shown in Figures 6 and 7, the beam joint 50 is disposed between the other-side connecting tube portion 43c of the right-side first deck beam 21 and the one-side connecting tube portion 42c of the right-side second deck beam 23, and is provided with a cylindrical joint body 51 extending in the vertical direction. The outer diameter of the joint body 51 is larger than the outer diameters of the one-side connecting tube portion 42c and the other-side connecting tube portion 43c. In addition, the joint body 51 is formed longer than the one-side connecting tube portion 42c and the other-side connecting tube portion 43c, and the upper end of the joint body 51 is located above the upper ends of the one-side connecting tube portion 42c and the other-side connecting tube portion 43c, and the lower end of the joint body 51 is located below the lower ends of the one-side connecting tube portion 42c and the other-side connecting tube portion 43c.

The beam joint 50 further includes an upper first connecting plate portion 52, a lower first connecting plate portion 53, an upper second connecting plate portion 54, a lower second connecting plate portion 55, and a lower connecting plate portion 56. The upper first connecting plate portion 52 is fixed near the upper end of the joint body 51 and is arranged so as to overlap the upper end of the other side connecting tube portion 43c of the right first deck beam 21. The upper first connecting plate portion 52 has a through hole 52a formed therein that coincides with the opening at the upper end of the other side connecting tube portion 43c. The lower first connecting plate portion 53 is fixed near the lower end of the joint body 51 and is arranged so as to overlap the lower end of the other side connecting tube portion 43c of the right first deck beam 21. The lower first connecting plate portion 53 has a through hole 53a formed therein that coincides with the opening at the lower end of the other side connecting tube portion 43c.

The upper second connecting plate portion 54 is fixed near the upper end of the joint body 51 and is arranged so as to overlap the upper end of the one-side connecting tube portion 42c of the right-side second deck beam 23. The upper second connecting plate portion 54 has a through hole 54a formed therein that coincides with the opening at the upper end of the one-side connecting tube portion 42c. The lower second connecting plate portion 55 is fixed near the lower end of the joint body 51 and is arranged so as to overlap the lower end of the one-side connecting tube portion 42c of the right-side second deck beam 23. The lower second connecting plate portion 55 has a through hole 55a formed therein that coincides with the opening at the lower end of the one-side connecting tube portion 42c.

The lower connecting plate 56 is fixed near the lower end of the joint body 51 and protrudes inward and outward from the deck 2 and extends vertically. The lower connecting plate 56 has a through hole 56a that penetrates horizontally.

The beam joint 50 further includes a first connecting pin 61 and a second connecting pin 62. The first connecting pin 61 is inserted into the other-side connecting tube portion 43c of the right-side first deck beam 21 through the upper first connecting plate portion 52 and is formed to penetrate the lower first connecting plate portion 53. That is, a head portion 61a having a larger diameter than the lower portion is formed at the upper end of the first connecting pin 61. The portion of the first connecting pin 61 below the head portion 61a has a cylindrical shape extending in the vertical direction. The lower portion of the first connecting pin 61 is inserted into the through hole 52a of the upper first connecting plate portion 52, the other-side connecting tube portion 43c, and the through hole 53a of the lower first connecting plate portion 53, so that the joint body 51 is connected to the other-side connecting tube portion 43c so as to be relatively rotatable around the axis of the first connecting pin 61.

The second connecting pin 62 is the same as the first connecting pin 61, and is formed so as to penetrate the upper second connecting plate portion 54 and be inserted into the one-side connecting tube portion 42c of the right-side second deck beam 23, and also penetrate the lower second connecting plate portion 55. That is, the portion below the head 62a of the second connecting pin 62 is inserted into the through hole 54a of the upper second connecting plate portion 54, the one-side connecting tube portion 42c, and the through hole 55a of the lower second connecting plate portion 55, so that the joint body 51 is connected to the one-side connecting tube portion 42c so as to be rotatable relative to the axis of the second connecting pin 62.

The beam joint 50 further includes an upper component 70 that is a separate member from the joint body 51. The upper component 70 includes a guide portion 71, a first side wall portion 72 and a second side wall portion 73, a first fixing plate portion 74a and a second fixing plate portion 74b, and a mounting tube portion 75. The guide portion 71 is a portion for guiding the slide member 80 from the right first deck beam 21 side to the right second deck beam 23 side, and is configured as a part of the upper component 70. Specifically, the guide portion 71 extends from the right first deck beam 21 side to the right second deck beam 23 side and is installed at the same height as the right first deck beam 21 and the right second deck beam 23. The upper end portion (head portion 61a) of the first connecting pin 61 and the upper end portion (head portion 62a) of the second connecting pin 62 are located below the guide portion 71. In other words, the guide portion 71 extends from a point above the upper end of the first connecting pin 61 to a point above the upper end of the second connecting pin 62.

The guide portion 71 has an arc shape that corresponds to the shape of the upper half of the upper pipe material 40. As a result, when viewed along the axis of the upper pipe material 40 of the right-side first deck beam 21, the guide portion 71 does not protrude or stick out from the upper pipe material 40, so that the slide member 80 hanging on the upper pipe material 40 of the right-side first deck beam 21 can move smoothly to the guide portion 71. Similarly, the slide member 80 that has moved to the guide portion 71 can move smoothly to the right-side second deck beam 23.

The upper component 70 has an open portion directly above the upper end of the first connecting pin 61 and an open portion directly above the upper end of the second connecting pin 62. Specifically, the upper component 70 has a first cutout 71a for opening the portion directly above the head 61a of the first connecting pin 61 upward. The size of the first cutout 71a is such that the head 61a can be moved from above to below the guide portion 71 without interfering with the guide portion 71 when the first connecting pin 61 is inserted into the through hole 52a. The upper component 70 has a second cutout 71b for opening the portion directly above the head 62a of the second connecting pin 62 upward. The size of the second cutout 71b is such that the head 62a can be moved from above to below the guide portion 72 without interfering with the guide portion 71 when the second connecting pin 62 is inserted through the through hole 54a.

The first side wall portion 72 extends downward from one end of the guide portion 71 in the width direction (the direction corresponding to the left-right direction of the deck 2) and extends from the right-side first deck beam 21 side to the right-side second deck beam 23 side. The second side wall portion 73 extends downward from the other end of the guide portion 71 in the width direction and extends from the right-side first deck beam 21 side to the right-side second deck beam 23 side. The first side wall portion 72 and the second side wall portion 73 are parallel to each other.

The first fixing plate 74a and the second fixing plate 74b shown in FIG. 13 extend from the lower end of the first side wall 72 to the lower end of the second side wall 73, and are provided so as to avoid the joint body 51. The first fixing plate 74a is arranged so as to overlap the upper first connecting plate 52. The first fixing plate 74a has a through hole 74c formed therein that coincides with the through hole 52a of the upper first connecting plate 52. The first connecting pin 61 is inserted through the through hole 74c of the first fixing plate 74a. In other words, the first connecting pin 61 penetrates the first fixing plate 74a and is inserted into the through hole 52a below it, so that the upper component 70 can be fixed to the joint body 51 by the first connecting pin 61.

The second fixing plate portion 74b is arranged so as to overlap the upper second connecting plate portion 54. A through hole 74d is formed in the second fixing plate portion 74b, which coincides with the through hole 54a of the upper second connecting plate portion 54. The second connecting pin 62 is inserted into the through hole 74d of the second fixing plate portion 74b. In other words, the second connecting pin 62 penetrates the second fixing plate portion 74b and is inserted into the through hole 54a below it, so that the upper component 70 can also be fixed to the joint body 51 by the second connecting pin 62.

The upper component 70 includes a first reinforcing plate 76 and a second reinforcing plate 77. The first reinforcing plate 76 extends from the first side wall portion 72 to the second side wall portion 73 and is connected to one of the bottom walls 74. The second reinforcing plate 77 extends from the first side wall portion 72 to the second side wall portion 73 and is connected to the other bottom wall portion 74.

The upper component 70 also includes an intermediate plate portion 78 to which the mounting tube portion 75 is attached. The intermediate plate portion 78 is disposed in the middle portion between the first reinforcing plate 76 and the second reinforcing plate 77, and extends from the first side wall portion 72 to the second side wall portion 73. The height of the intermediate plate portion 78 is set near the upper end portion of the first side wall portion 72, and is located higher than the first fixing plate portion 74a and the second fixing plate portion 74b.

The mounting tube portion 75 has a cylindrical shape that extends in the vertical direction. The outer diameter of the mounting tube portion 75 is set smaller than the inner diameter of the joint body 51. The upper end portion of the mounting tube portion 75 is fixed to the lower surface of the intermediate plate portion 78. The mounting tube portion 75 protrudes downward beyond the first fixing plate portion 74a and the second fixing plate portion 74b, and the lower portion of the mounting tube portion 75 is inserted into the joint body 51 from above.

(Another type of joint)
FIG. 14 is a perspective view showing a joint 100 of another embodiment not having a guide portion 71. The joint 100 includes a joint body 101, and an upper connecting plate portion 102 and a lower connecting plate portion 103 provided so as to protrude in four horizontal directions. Each upper connecting plate portion 102 has a through hole 102a formed therein, and each lower connecting plate portion 103 has a through hole 103a formed therein. The upper connecting plate portion 102 can be arranged so as to overlap with the upper end portion of the one-side connecting tube portion 42c or the other-side connecting tube portion 43c. The lower connecting plate portion 103 can be arranged at the lower end portion of the one-side connecting tube portion 42c or the other-side connecting tube portion 43c. Thus, by using the joint 100, the first deck beam 22 and the second deck beam 23 can be connected by the first connecting pin 61 and the second connecting pin 62. In addition, since there are four upper connecting plate portions 102 and four lower connecting plate portions 103, it is possible to connect a maximum of four deck beams with the joint 100.

The joint body 101 is provided with a protruding tube portion 104 that protrudes upward. This protruding tube portion 104 is formed with a through hole 104a that penetrates horizontally. For example, the protruding tube portion 104 can be inserted into a support (not shown) from below and a pin or the like can be inserted into the through hole 104a to fix the support to the joint body 101. The hanging member 4 can also be inserted into the joint body 101 to fix it.

(How to install the panels)
Next, a method for installing the panel material 3 will be described with reference to Fig. 2. Before installing the panel material 3, the first deck 2A is suspended from the building by the suspension members 4. Slide members 80 are hung on the upper pipe members 40 of the right-side first deck beam 21 and the upper pipe members 40 of the left-side first deck beam 22 that constitute the first deck 2A. At this time, fixing with wedges 83 is not performed.

Both ends of the fabric material 90 are connected to a pair of slide members 80, 80. The slide members 80, 80 and the fabric material 90 are moved toward the base ends of the right-side first deck beam 21 and the left-side first deck beam 22, and the engagement portion 3b at one end of the panel material 3 is engaged with the fabric material 90. At this time, only a portion of the panel material 3 on the first deck 2A is engaged with the fabric material 90. Thereafter, as shown by the arrow in FIG. 2, when the panel material 3 is pushed toward the tip side of the first deck 2A, the panel material 3 is supported by the upper pipe material 40 through the slide members 80, and therefore moves while being guided toward the tip side by the upper pipe material 40.

After hanging another slide member 80, 80 and a cloth material 90 on the base end side of the right-side first deck beam 21 and the left-side first deck beam 22, the panel material 3 can be installed on the first deck 2A by engaging the engagement portion 3b at the other end of the panel material 3 with the another cloth material 90.

Then, a worker stands on the panel material 3 of the first deck 2A and connects the base end of the right-side second deck beam 23 to the tip end of the right-side first deck beam 21 via a beam joint 50, and connects the base end of the left-side second deck beam 24 to the tip end of the left-side first deck beam 22 via a beam joint 50.

Next, when the panel material 3 of the first deck 2A is pushed further toward the tip, the slide member 80 located at the tip moves from the right-side first deck beam 21 side to the guide portion 71 (shown in FIG. 5, etc.) of the beam joint 50, and is guided by the guide portion 71 toward the right-side second deck beam 23 side. Therefore, the slide member 80 moves smoothly.

In this way, the panel material 3 can be sent to the second deck 2B. When sending the panel material 3 to the second deck 2B, further slide members 80, 80 and fabric material 90 are hung on the base end side of the right-side first deck beam 21 and the left-side first deck beam 22. Then, by engaging the engagement portion 3b of the further panel material 3 with the further fabric material 90 and then pushing it toward the tip side, the entire panel material 3 can be sent toward the tip side and the panel material 3 can be installed on the second deck 2B.

Then, a worker stands on the panel material 3 on the second deck 2B and connects the base end of the right-side third deck beam 25 to the tip of the right-side second deck beam 23 via a beam joint 50, and connects the base end of the left-side third deck beam 26 to the tip of the left-side second deck beam 24 via a beam joint 50. From then on, the panel material 3 can be sent to the third deck 2C in the same manner.

After the panel material 3 is installed, the wedge 83 of the slide member 80 is driven into the first wedge hole 81d and the second wedge hole 81e to fix the slide member 80 to the upper pipe material 40.

(Effects of the embodiment)
As described above, according to this embodiment, a suspended scaffolding 1 can be systematized using multiple deck beams 21-26 and panel material 3, so that the time required for construction is significantly reduced compared to conventional single-pipe suspended scaffolding.

In addition, since the first deck beam 22 and the second deck beam 24 are rotatably connected by the beam joint 50, for example, the extension deck beam 24 can be made rotatable relative to the existing deck beam 22, making it easy to expand the pre-floor construction type suspended scaffolding.

Furthermore, when the second deck beam 24 is connected to the first deck beam 22 and extended horizontally, if the end of the panel material 3 is connected to the slide member 80 arranged on the base end side of the first deck beam 22, the slide member 80 is guided by the guide portion 71 from the first deck beam 22 side to the second deck beam 24 side simply by pushing the panel material 3 toward the tip side, making it possible to feed the panel material 3 to the tip side. In other words, while the worker is at the base end side of the first deck beam 21, the panel material 3 can be safely fed to the tip side and installed in the desired position.

The above-described embodiments are merely illustrative in all respects and should not be interpreted as limiting. Furthermore, all modifications and variations within the scope of the claims are within the scope of the present invention.

As explained above, the suspended scaffolding of the present invention can be used, for example, at work sites of various buildings, etc.

1 Suspended scaffolding 2 Deck 3 Panel material 3b Engagement portion 4 Suspended member 21 First deck beam 24 Second deck beam 40 Upper pipe material 41 Lower pipe material 42 One-side connecting material 42c One-side connecting tube portion (second connecting tube portion)
43 Other side connecting member 43c Other side connecting cylinder part (first connecting cylinder part)
50 Beam joint 51 Joint body 52 First connecting plate portion 54 Second connecting plate portion 61 First connecting pin 62 Second connecting pin 71 Guide portion 74a First fixing plate portion 74b Second fixing plate portion 75 Mounting tube portion 80 Slide member

Claims (5)

Panel materials constituting the work floor;
A plurality of deck beams on which the panel material is installed;
A hanging scaffolding including a hanging member for hanging the deck beam to a building,
The deck beam includes a first deck beam and a second deck beam extending horizontally and installed at the same height,
A slide member that is hung on the first deck beam and slides in the extension direction of the first deck beam;
a beam joint that connects an end of the first deck beam and an end of the second deck beam to be rotatable about an axis extending in a vertical direction while being spaced apart from each other in a horizontal direction;
The longitudinal ends of the panel material are connected to the slide members,
The beam joint is provided with a guide portion that extends from the first deck beam side to the second deck beam side and is installed at the same height as the first deck beam and the second deck beam, and that guides the slide member from the first deck beam side to the second deck beam side. The suspended scaffolding according to claim 1,
The first deck beam and the second deck beam include an upper pipe material, a lower pipe material arranged below and spaced apart from the upper pipe material and extending parallel to the upper pipe material, and a connecting material fixed to the upper pipe material and the lower pipe material and connecting the upper pipe material and the lower pipe material,
The slide member is a suspended scaffold that is hung on the upper pipe material. The suspended scaffolding according to claim 2,
A first connecting tube portion extending in the vertical direction is fixed to an end portion of the first deck beam,
A second connecting tube portion extending in the vertical direction is fixed to an end portion of the second deck beam,
The beam joint includes a cylindrical joint body disposed between the first connecting cylinder portion and the second connecting cylinder portion and extending in the vertical direction, a first connecting plate portion fixed to the joint body and disposed so as to overlap an upper end portion of the first connecting cylinder portion, a second connecting plate portion fixed to the joint body and disposed so as to overlap an upper end portion of the second connecting cylinder portion, a first connecting pin penetrating the first connecting plate portion and inserted into the first connecting cylinder portion, and a second connecting pin penetrating the second connecting plate portion and inserted into the second connecting cylinder portion,
A suspended scaffolding in which the guide portion extends from a point above the upper end of the first connecting pin to a point above the upper end of the second connecting pin. The suspended scaffolding according to claim 3,
The guide portion is provided in a part of an upper component member that is a separate member from the joint body,
A suspended scaffolding in which the upper component member is provided with an attachment tube portion that is inserted into the joint body from above. The suspended scaffolding according to claim 4 ,
The upper component member includes a first fixing plate portion arranged so as to overlap the first connecting plate portion, and a second fixing plate portion arranged so as to overlap the second connecting plate portion,
The first connecting pin penetrates the first fixing plate portion,
A suspended scaffolding in which the second connecting pin penetrates the second fixed plate portion.