JP7523810B2 - 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 extending horizontally and a joint connecting the ends of the multiple beam units. The joint comprises upper and lower plates extending horizontally and a cylindrical member extending from the lower surface of the upper plate to the upper surface of the lower plate, and the upper and lower plates extend radially (horizontally) from the cylindrical member. Meanwhile, the ends of the beam units are formed so as to sandwich the upper and lower plates of the joint in the vertical direction. When connecting the beam units to the joints, the beam units are moved horizontally relative to the joints so that the ends of the beam units sandwich the upper and lower plates of the joint in the vertical direction.

Utility Model Registration No. 3223667

However, depending on the site where the suspended scaffolding is being constructed, it may be necessary to assemble the components that make up the scaffolding by moving them from top to bottom. However, the beam units in Patent Document 1 could only be moved horizontally when connecting to the joints, meaning there was little freedom in assembly.

This disclosure has been made in consideration of these points, and its purpose is to provide a suspended scaffold that can be constructed by moving the components that make up the scaffold from above to below.

In order to achieve the above object, in a first aspect of the present disclosure, a suspended scaffolding can be provided that includes a plurality of deck beams connected to form a rectangular shape in a plan view, a panel material that is installed on the deck beams and forms a work floor, and a suspension member that suspends the deck beam from a building. The suspended scaffolding includes a beam joint that connects the plurality of deck beams. A connecting member is provided at the end of the deck beam, which is made up of a pair of plate materials that extend in the vertical direction and face each other with a horizontal gap between them, and a gap that opens downward is formed between the pair of plate materials. The beam joint extends in the vertical direction and has a connecting plate portion that is inserted between the pair of plate materials and connected to the pair of plate materials.

With this configuration, when connecting the end of the deck beam to the beam joint, it is possible to insert the connecting plate of the beam joint from below into the gap between a pair of plates provided at the end of the deck beam, increasing the degree of freedom during assembly.

The deck beam according to the second aspect of the present disclosure may include an upper pipe member extending horizontally, and a lower pipe member disposed below and spaced apart from the upper pipe member and extending parallel to the upper pipe member. The connecting member is fixed to an end of the upper pipe member and an end of the lower pipe member, and can connect the upper pipe member and the lower pipe member.

With this configuration, the deck beam has upper and lower pipe materials, which are connected by a connecting material, thereby increasing the strength of the deck beam.

In a third aspect of the present disclosure, the upper pipe material and the lower pipe material may be arranged so as not to be aligned in a left-right direction perpendicular to the longitudinal direction of the deck beam in a plan view.

With this configuration, the upper and lower pipe materials that make up the deck beam are not aligned in a direction perpendicular to the longitudinal direction of the deck beam in a plan view (the left-right direction of the deck beam), so the left-right dimension of the deck beam can be shortened. By shortening the left-right dimension of the deck beam, the probability of interference with piping, etc. is reduced when constructing a suspended scaffolding in a building with multiple pipes that are intricately intertwined, such as a plant, and the freedom to construct the suspended scaffolding is improved.

In a fourth aspect of the present disclosure, the upper parts of the pair of plate materials may be fixed to the end of the upper pipe material, and the lower parts of the pair of plate materials may be fixed to the end of the lower pipe material and may protrude outward in the axial direction of the lower pipe material beyond the end of the lower pipe material.

With this configuration, the upper pipe material and the lower pipe material are connected with a pair of plates to ensure high strength, while the gap between the pair of plates can be opened downward and axially outward from the end of the lower pipe material.

In the fifth aspect of the present disclosure, the end of the upper pipe material is located further outward in the longitudinal direction of the deck beam than the end of the lower pipe material.

With this configuration, it is possible to position the end of the upper pipe material above the connecting plate part of the beam joint while the connecting plate part is inserted into the gap between a pair of plate materials. This prevents the deck beam from falling off the beam joint.

The beam joint according to the sixth aspect of the present disclosure may include a joint body made of a tubular member extending in the vertical direction. The base end of the connecting plate portion can be fixed to the outer surface of the joint body. In this configuration, the joint body can be suspended at any height by inserting, for example, a chain or the like inside the joint body and fixing it. A deck beam is connected to this joint body, so a work floor can be constructed at any height.

As explained above, the connecting plate of the beam joint can be inserted into the gap between a pair of plates that make up the connecting member of the deck beam from below, so that a suspended scaffold can be constructed by moving the deck beam from above to below.

FIG. 1 is a perspective view of a suspended scaffolding according to an embodiment of the present invention, viewed from above. FIG. 2 is a side view of the above-mentioned suspended scaffolding. This is an enlarged perspective view of a portion of the deck of the suspended scaffolding. FIG. 4 is a view equivalent to FIG. 3 and showing the deck beam in a rotated state. FIG. 2 is a perspective view of a full length deck beam. FIG. 1 is a perspective view of a short overall length deck beam. FIG. 2 is a perspective view of an orthogonal deck beam. FIG. 1 is a side view of two deck beams connected by a pivoting beam joint. FIG. 1 is a plan view of two deck beams connected by a pivoting beam joint. FIG. 4 is a side view of a first connection portion of the pivoting beam joint. FIG. 4 is a side view of a second connection portion of the pivoting beam joint. FIG. FIG. 1 is a side view of a section connecting two deck beams by a first non-rotating beam joint. FIG. 2 is a perspective view of a first non-rotating beam joint. FIG. 2 is a perspective view of a second non-rotating beam joint. FIG. 13 is a perspective view of a third non-rotating beam joint. FIG. 13 is a perspective view of a fourth non-rotating beam joint. FIG. 1 is a side view of a deck beam that moves vertically. FIG. 1 is an end view of a deck beam that moves vertically, as viewed from one end side. This is a cross-sectional view taken along line BB in Figure 16. FIG. 13 is a side view of a beam joint to which a deck beam that moves vertically is connected. FIG. 1 is a plan view of a beam joint to which a deck beam that moves vertically is connected. FIG. 11 is a side view showing a state in which a deck beam that is moved vertically is connected to a beam joint. FIG. 11 is a plan view showing a state in which a deck beam that is moved vertically is connected to a beam joint.

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 perspective view of a suspended scaffolding 1 according to an embodiment of the present invention, and Figure 2 is a side view of the suspended scaffolding 1. As shown in Figure 2, the suspended scaffolding 1 includes a deck 2, a panel material 3 constituting a work floor, and a hanging member 4. The panel material 3 is, for example, made of a wooden scaffolding board, a steel scaffolding board, an anti (a cloth frame with a board), etc., and is not particularly limited as long as it is a material that can form a work floor that serves as a scaffold for work. The size and shape of the panel material 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.

The hanging member 4 is a member for suspending the deck beams 20-35 (described later) that constitute the deck 2 from a building, and can be composed of, for example, a metal chain. The upper part of the hanging member 4 is fixed, for example, directly to the building or indirectly via a metal fitting for a hanging device. The deck beams 20-35 are fixed to the lower part of the hanging member 4. The number of hanging members 4 can be any number according to the size and shape of the deck 2. The length of the hanging members 4 can be changed to any length according to the building, work content, etc. The deck beams 20-35, panel material 3, and hanging members 4 are scaffolding components that make up the suspended scaffolding 1.

In FIG. 1, the panel material 3 and part of the hanging member 4 are omitted. The suspended scaffolding 1 is constructed at the construction sites of various buildings and various civil engineering work sites according to the type and content of the work. For example, the suspended scaffolding 1 can 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 outside the building in a complicated manner, 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 includes the first deck 2A, the second deck 2B, the third deck 2C, the fourth deck 2D, and the fifth deck 2E. The deck 2 may be composed of only the first deck 2A, or may be composed of any number of decks 2A to 2E, and the number is not limited to five. The first deck 2A is a deck that is assembled separately from the second to fifth decks 2B to 2E, and is also called the first deck. After assembling the first deck 2A on the ground, for example, it can be hung from a building by a hanging member 4 to form a work floor before the second to fifth decks 2B to 2E. After that, 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, and by assembling up to the fifth deck 2E in this way, it is possible to gradually expand the work floor. In other words, the suspended scaffolding 1 of this embodiment is a pre-floor construction type suspended scaffolding that allows the scaffolding to be expanded in stages while the existing deck (first deck 2A) is suspended. In addition, although not shown, handrails, baseboards, cloth materials, etc. may be attached to the suspended scaffolding 1.

The first deck 2A is composed of a base end deck beam 20, a right short deck beam 21, a left short deck beam 22, and a first intermediate deck beam 23. The base end deck beam 20 and the first intermediate deck beam 23 are the same and face each other. The right short deck beam 21 and the left short deck beam 22 are the same and face each other. The length of the right short deck beam 21 and the left short deck beam 22 is set shorter than the length of the base end deck beam 20 and the first intermediate deck beam 23. The base end deck beam 20 and the right short deck beam 21 are perpendicular to each other, and the base end deck beam 20 and the left short deck beam 22 are perpendicular to each other. The first intermediate deck beam 23 and the right short deck beam 21 are perpendicular to each other, and the first intermediate deck beam 23 and the left short deck beam 22 are perpendicular to each other. Therefore, the base end deck beam 20 and the first intermediate deck beam 23 are parallel, and the right short deck beam 21 and the left short deck beam 22 are parallel.

In this way, the four deck beams 20-23 constituting one deck 2A are arranged to form a rectangular shape in a plan view. The base end deck beam 20 is connected to the right short deck beam 21 and the left short deck beam 22, and the first intermediate deck beam 23 is connected to the right short deck beam 21 and the left short deck beam 22. The connection structure of these deck beams 20-23 will be described later. The lengths of the four deck beams 20-23 may all be the same. The lengths of the deck beams 20-23 are not limited to two types, but can be set arbitrarily. For example, the lengths of the deck beams 20-23 can be 610 mm, 914 mm, 1219 mm, 1524 mm, 1829 mm, etc., from the shortest to the largest. In this case, deck beams of five different lengths can be arbitrarily combined to form the decks 2A-2E. The above dimensions can be, for example, the dimensions from center to center of the beam joints attached to both ends of the deck beam.

For example, the lengths of the opposing deck beams 20, 23 (or the lengths of the deck beams 21, 22) on the first deck 2A are made the same. This makes the first deck 2A rectangular or square. By determining the specifications of the deck beams 20-23 in advance, such as their length, width, and vertical dimensions, the deck beams 20-23 can be made standard products, and a systemized suspended scaffolding 1 can be constructed.

The second deck 2B, like the first deck 2A, is rectangular in plan view and is made up of a first intermediate deck beam 23, a first right deck beam 24, a first left deck beam 25, and a second intermediate deck beam 26. The first intermediate deck beam 23 is shared with the first deck 2A. The deck beams 23 to 26 that make up the second deck 2B are the same length.

The third deck 2C, like the second deck 2B, is rectangular in plan view and is made up of a second intermediate deck beam 26, a second right deck beam 27, a second left deck beam 28, and a third intermediate deck beam 29. The second intermediate deck beam 26 is shared with the second deck 2B. The deck beams 26 to 29 that make up the third deck 2C are the same length.

The fourth deck 2D, like the second deck 2B, is rectangular in plan view and is made up of a third intermediate deck beam 29, a third right deck beam 30, a third left deck beam 31, and a first rear deck beam 32. The third intermediate deck beam 29 is shared with the third deck 2C. The deck beams 29 to 32 that make up the fourth deck 2D are the same length.

The fifth deck 2E, like the second deck 2B, is rectangular in plan view and is made up of a third left deck beam 31, a first rear deck beam 33, a second rear deck beam 34, and a third rear deck beam 35. The third left deck beam 31 is shared with the fourth deck 2D. The deck beams 31, 33 to 35 that make up the fifth deck 2E are the same length.

For example, as shown in FIG. 3, the first right deck beam 24 and the first left deck beam 25 of the second deck 2B may be shorter than the first intermediate deck beam 23 and the second intermediate deck beam 26. The deck beams 23 to 26 constituting the second deck 2B are connected to each other so as to be relatively rotatable around an axis extending in the vertical direction. By rotating the deck beams 23 to 26 relatively, the second intermediate deck beam 26 can be brought closer to the first intermediate deck beam 23, that is, the first deck 2A, as shown in FIG. 4. To achieve the rotation state shown in FIG. 4, the first right deck beam 24 and the first left deck beam 25 are connected in an inclined position relative to the first intermediate deck beam 23, and further, the second intermediate deck beam 26 is connected in an inclined position relative to the first right deck beam 24 and the first left deck beam 25. As a result, the second intermediate deck beam 26 can be connected to the first right deck beam 24 and the first left deck beam 25 at a position close to the first deck 2A, so that the connection work can be easily performed from above the first deck 2A. Then, as shown in FIG. 3, the deck beams 23 to 26 are rotated relative to each other so that they form a rectangle. Then, the deck beams 23 to 26 are locked by a rotation prevention member (not shown) so that they do not rotate. The rotation prevention member may be, for example, a member that can fix the first left deck beam 25 and the first intermediate deck beam 23 while maintaining the angle between them at 90°, and may be, for example, a cap-shaped member that fits onto the ends of the first left deck beam 25 and the first intermediate deck beam 23, or a clamp that fixes the ends of the first left deck beam 25 and the first intermediate deck beam 23. The third deck 2C, the fourth deck 2D, and the fifth deck 2E may be configured in the same manner as the second deck 2B.

That is, the suspended scaffolding 1 can be constructed as follows. First, the first deck 2A is assembled on the ground, and then suspended from the building. In this process, the panel material 3 is installed on the first deck 2A. Then, a worker on the panel material 3 of the first deck 2A performs a process of rotatably connecting the deck beams 24 and 25 constituting the second deck 2B to the deck beam 23 constituting the first deck 2A. At this time, the deck beam 26 constituting the second deck 2B is brought close to the deck beam 23 constituting the first deck 2A. Next, the deck beams 24, 25, and 26 are rotated to form the rectangular or square second deck 2B. Then, the panel material 3 is installed on the second deck 2B. In this way, up to the fifth deck 2E is formed. This is the method of constructing the suspended scaffolding.

(Deck beam configuration)
The deck beams 20 to 35 constituting the first to fifth decks 2A to 2E can have the same structure, but different lengths. The deck beams 20 to 35 have a vertically symmetrical structure with the horizontal center line as the center of symmetry. The names of the deck beams 20 to 35 are given only for the convenience of explanation. Figure 5 shows an example of a relatively long deck beam 20 (23 to 35), and Figure 6 shows an example of a relatively short deck beam 21 (22). The first to fifth decks 2A to 2E may be composed only of the deck beam 20 shown in Figure 5, or the first to fifth decks 2A to 2E may be composed only of the deck beam 21 shown in Figure 6.

As shown in FIG. 5, the deck beam 20 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 pipe material (short support) 44. The upper pipe material 40 and the lower pipe material 41 are made of, for example, steel pipes having a circular cross section, and are specifically, components such as single-pipe construction and fabric materials that have traditionally been used to construct 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 construction 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 length of the deck beam 20 corresponds to the length of the upper pipe material 40. The direction perpendicular to the longitudinal direction of the deck beam 20 in a plan view is defined as the left-right direction of the deck beam 20, and the left-right direction of the deck beam 20 can also be called the width direction of the deck beam 20.

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 is composed of a pair of left and right metal plate materials 42a, 42b arranged at intervals in the left-right direction. The left plate material 42a extends continuously from the lower part of the outer peripheral surface of one end of the upper pipe material 40 to the upper part of the outer peripheral surface of one end of the lower pipe material 41, and also extends in the longitudinal direction of the deck beam 20, 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 42b is parallel to the left plate 42a and is offset to the right from the axis of the upper pipe 40 and the lower pipe 41 in a plan view. In a plan view, the left and right plate materials 42a, 42b are positioned so that they are hidden by the upper pipe 40.

The other side connecting member 43 is composed of a pair of left and right plate members 43a, 43b that extend from the other end of the upper pipe member 40 to the other end of the lower pipe member 41 and are arranged at a distance from each other in the left-right direction. The left plate member 43a extends continuously from the lower part of the outer circumferential surface of the other end of the upper pipe member 40 to the upper part of the outer circumferential surface of the other end of the lower pipe member 41, and also extends in the longitudinal direction of the deck beam 20, and is offset to the left from the axis of the upper pipe member 40 and the lower pipe member 41 in a plan view. The right plate member 43b is parallel to the left plate member 43a, and is offset to the right from the axis of the upper pipe member 40 and the lower pipe member 41 in a plan view. The one side connecting member 42 and the other side connecting member 43 have the same structure. Therefore, the deck beam 20 has a symmetrical structure with a straight line extending vertically through the center of the longitudinal direction as the center of symmetry.

The intermediate pipe material 44 is made of, for example, a steel pipe, and extends from the longitudinal middle part of the upper pipe material 40 to the longitudinal middle part of the lower pipe material 41. The upper end of the intermediate pipe material 44 is fixed to the lower part of the outer circumferential surface of the upper pipe material 40 via an upper bracket 44a. The lower end of the intermediate pipe material 44 is fixed to the upper part of the outer circumferential surface of the lower pipe material 41 via a lower bracket 44b. The intermediate pipe material 44 can also be fixed to the upper pipe material 40 and the lower pipe material 41 by welding or the like. Therefore, the upper pipe material 40 and the lower pipe material 41 are connected not only at both longitudinal ends but also at their middle parts, so that the deck beam 20 can ensure high strength. The number of intermediate pipe materials 44 is not limited to one, but may be two or more. The intermediate pipe material 44 may have an insertion part into which a wedge provided on the scaffolding component is inserted. If the upper pipe material 40 and the lower pipe material 41 are short, the middle pipe material 44 may be omitted.

The left-right dimension of the deck beam 20 is set shorter than the up-down dimension. That is, the deck beam 20 includes only one upper pipe material 40, and no other pipe material is arranged on the side of the upper pipe material 40. Also, the deck beam 20 includes only one lower pipe material 41, and no other pipe material is arranged on the side of the lower pipe material 41. The upper pipe material 40 and the 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 overlap. By arranging the upper pipe material 40 and the lower pipe material 41 in this way, the left-right dimension of the deck beam 20 becomes equal to the outer diameter of the upper pipe material 40 or the lower pipe material 41. In addition, the left-right dimension of the brackets 44a, 44b of the intermediate pipe material 44 may be larger than the outer diameter of the upper pipe material 40 or the lower pipe material 41, but the difference is small and only a portion of the deck beam 20 in the longitudinal direction, so it is of little concern in constructing the deck 2. In addition, the left-right dimension of the brackets 44a, 44b of the intermediate pipe material 44 may be smaller than the outer diameter of the upper pipe material 40 or the lower pipe material 41.

The components constituting the deck beam 21 shown in Figure 6 are different from those constituting the deck beam 20 shown in Figure 5 only in terms of the length of the upper pipe material 40 and the lower pipe material 41. Since they have essentially the same structure, they are given the same reference numerals as in Figure 5 and will not be described.

(Configuration of orthogonal deck beams)
As shown in FIG. 1, the suspended scaffolding 1 may include an orthogonal deck beam 50 as necessary. The position of the orthogonal deck beam 50 can be set arbitrarily. In the example shown in FIG. 1, the orthogonal deck beam 50 is provided on the fourth deck 2D and the fifth deck 2E, respectively, but the orthogonal deck beam 50 may be provided on the first to third decks 2A to 2C. The orthogonal deck beam 50 provided on the fourth deck 2D is bridged across a pair of the third intermediate deck beam 29 and the first rear deck beam 32 facing each other, and is arranged so as to be perpendicular to the pair of deck beams 29, 32. The position of the orthogonal deck beam 50 can be set arbitrarily as long as it is in the longitudinal direction of the third intermediate deck beam 29 and the first rear deck beam 32. The orthogonal deck beam 50 may be bridged across a pair of the third right deck beam 30 and the third left deck beam 31 facing each other. The orthogonal deck beam 50 can be moved horizontally on the deck beam after being installed on each deck beam.

The orthogonal deck beam 50 is positioned horizontally away from the third right deck beam 30, which is parallel to the orthogonal deck beam 50. This results in an opening A being formed between the orthogonal deck beam 50 and the third right deck beam 30. By constructing the suspended scaffolding 1 so that the plant piping passes through this opening A, it is possible to construct the suspended scaffolding 1 over a wide area while avoiding interference with the piping. In this case, it is sufficient to close the opening A between the orthogonal deck beam 50 and the third right deck beam 30 with panel material 3 only in the part where the piping does not pass.

The orthogonal deck beam 50 arranged on the fifth deck 2E is spanned across a pair of opposing third left deck beam 31 and third rear deck beam 35, and is positioned so as to be perpendicular to the pair of deck beams 31, 35. The position of the orthogonal deck beam 50 can be set arbitrarily as long as it is in the longitudinal direction of the third left deck beam 31 and the third rear deck beam 35. The orthogonal deck beam 50 may also be spanned across a pair of opposing first rear deck beam 33 and second rear deck beam 34. An opening B is formed between the orthogonal deck beam 50 and the first rear deck beam 33. The suspended scaffolding 1 can also be constructed so that the plant piping can pass through this opening B.

As shown in FIG. 7, the orthogonal deck beam 50 comprises an upper pipe material 51 and a lower pipe material 52 similar to those of the deck beam 20 described above, a one-side connecting material 53 consisting of a pair of plate materials 53a, 53b, an other-side connecting material 54 consisting of a pair of plate materials 54a (only one is shown), and an intermediate pipe material 55. The upper end of the intermediate pipe material 55 is fixed to the upper pipe material 51 by an upper bracket 55a. The lower end of the intermediate pipe material 55 is fixed to the lower pipe material 52 by a lower bracket 55b.

The orthogonal deck beam 50 further includes a one-side locking portion 56 and an other-side locking portion 57. The one-side locking portion 56 is made of a metal plate material fixed to one end of the upper pipe material 51 and the lower pipe material 52, and is open downward and in both the left and right directions (directions perpendicular to the longitudinal direction of the orthogonal deck beam 50 in a plan view). The dimensions of the open portion of the one-side locking portion 56 correspond to the outer diameter dimensions of the upper pipe material 40 and the lower pipe material 41 shown in Figures 5 and 6. Specifically, the longitudinal dimensions of the orthogonal deck beam 50 at the open portion of the one-side locking portion 56 are set slightly larger (to the extent that almost no rattling occurs) than the outer diameter dimensions of the upper pipe material 40 and the lower pipe material 41 shown in Figures 5 and 6, and the upper pipe material 40 and the lower pipe material 41 can be inserted radially from the open portion of the one-side locking portion 56. As a result, for example, as shown in FIG. 1, by positioning the orthogonal deck beam 50 above the third intermediate deck beam 29 and then moving it downward, the one-side locking portion 56 can be locked from above against the third intermediate deck beam 29, preventing the orthogonal deck beam 50 from falling. The other-side locking portion 57 is configured in the same manner as the one-side locking portion 56, and is fixed to the other end of the upper pipe material 51 and the lower pipe material 52.

(Rotating beam joint)
As shown in Figures 3 and 4, when the deck beams 23 to 26 constituting the second deck 2B are connected to each other so as to be relatively rotatable, the deck beams 23 to 26 are connected using a rotating beam joint 60. The rotating beam joint 60 has a vertically symmetrical structure with a horizontally extending center line as the center of symmetry. As also shown in Figures 8A and 8B, the rotating beam joint 60 includes a first connecting portion 61 and a second connecting portion 62, both of which are made of a high-strength metal material. Figures 8A and 8B show a case where the first intermediate deck beam 23 and the first right deck beam 24 are connected, and the first intermediate deck beam 23 is the first deck beam, and the first right deck beam 24 is the second deck beam. The rotating beam joint 60 connects one end of the first intermediate deck beam 23 and one end of the first right deck beam 24 to each other. In addition to the examples shown in Figures 8A and 8B, the rotating beam joint 60 can also be used when connecting other deck beams.

The first connection part 61 of the pivoting beam joint 60 is a member that is inserted between the pair of left and right plate materials 42a, 42b that constitute one side connecting member 42 of the first intermediate deck beam 23 and connected to the pair of plate materials 42a, 42b. The first connection part 61 can also be used as a member that is inserted between the pair of left and right plate materials 43a, 43b that constitute the other side connecting member 43 and connected to the pair of plate materials 43a, 43b.

Specifically, the first connection portion 61 has a plate-shaped main body portion 61a that is inserted between a pair of plate materials 42a, 42b of the first intermediate deck beam 23. The main body portion 61a extends in the vertical direction along the plate materials 42a, 42b and also extends in the longitudinal direction of the first intermediate deck beam 23. The longitudinal dimension of the main body portion 61a is set to be longer than the longitudinal dimension of the plate materials 42a, 42b. As a result, when the main body portion 61a is inserted between the plate materials 42a, 42b, it protrudes from between the plate materials 42a, 42b toward both sides in the longitudinal direction of the first intermediate deck beam 23. The first connection part 61 is inserted from one end side of the first intermediate deck beam 23 toward the space between the plate materials 42a, 42b, so with the insertion direction as the reference, the tip of the first connection part 61 is the end located on the tip side in the insertion direction, and the base end of the first connection part 61 is the end located on the base side in the insertion direction.

The portion of the main body 61a near the tip is a portion that protrudes from between the plate materials 42a and 42b. In the portion of the main body 61a near the tip, an insertion hole 61b into which a fastener 63 is inserted as shown in FIG. 10 is formed so as to penetrate in the thickness direction. The fastener 63 has a first rod-shaped portion 63a and a second rod-shaped portion 63b that are perpendicular to each other. The tip of the first rod-shaped portion 63a is rotatable around a rotation axis 63c. When the first connecting portion 61 tries to move in a direction to come out from between the plate materials 42a and 42b with the first rod-shaped portion 63a inserted into the insertion hole 61b, the first rod-shaped portion 63a abuts against the edge of the plate materials 42a and 42b, so that the first connecting portion 61 cannot come out from between the plate materials 42a and 42b. By removing the first rod-shaped portion 63a from the insertion hole 61b and removing the fastener 63, the first connection portion 61 can be removed from between the plate materials 42a and 42b. The fastener 63 can also be attached so as to penetrate the plate materials 42a and 42b. The fastener 63 can also be attached to the plate material 42a or the main body portion 61a with a wire or chain (not shown) to prevent it from falling.

As shown in FIG. 9A, a pivot shaft 61c extending in the vertical direction is provided at the base end of the main body 61a of the first connection part 61. The pivot shaft 61c has a circular horizontal cross section and is made of, for example, a cylindrical member. The upper and lower ends of the pivot shaft 61c are fixed to the upper and lower ends of the main body 61a by welding or the like. A gap S is formed between the outer peripheral surface of the pivot shaft 61c and the vertical edge on the base end side of the main body 61a.

As shown in Figures 8A and 8B, the second connection part 62 of the pivot beam joint 60 is a member that is inserted between the pair of left and right plate materials 42a, 42b that constitute the one-side connecting member 42 of the first right deck beam 24 and connected to the pair of plate materials 42a, 42b. The second connection part 62 can also be used as a member that is inserted between the pair of left and right plate materials 43a, 43b that constitute the other-side connecting member 43 and connected to the pair of plate materials 43a, 43b.

Specifically, the second connection portion 62 has a plate-shaped main body portion 62a that is inserted between a pair of plate materials 42a, 42b of the first right deck beam 24. The main body portion 62a extends in the vertical direction along the plate materials 42a, 42b, similar to the main body portion 61a of the first connection portion 61, and also extends in the longitudinal direction of the first right deck beam 24. The longitudinal dimension of the main body portion 62a is set to be longer than the longitudinal dimension of the plate materials 42a, 42b. As a result, when the main body portion 62a is inserted between the plate materials 42a, 42b, it protrudes from between the plate materials 42a, 42b toward both sides in the longitudinal direction of the first right deck beam 24. The second connection part 62 is inserted from one end of the first right deck beam 24 between the plate members 42a, 42b, so with the insertion direction as the reference, the tip of the second connection part 62 is the end located on the tip side in the insertion direction, and the base end of the second connection part 62 is the end located on the base side in the insertion direction.

The portion of the body 62a near the tip protrudes from between the plate members 42a and 42b. In the portion of the body 62a near the tip, an insertion hole 62b (shown in FIG. 9B) into which a fastener 63 as shown in FIG. 10 is inserted is formed so as to penetrate in the thickness direction, similar to the first connection portion 61.

A cylindrical portion 62c extending in the vertical direction is provided at the base end of the main body 62a of the second connection portion 62. The cylindrical portion 62c has a circular cross section in the horizontal direction and is made of, for example, a circular pipe material. The rotating shaft portion 61c of the first connection portion 61 is rotatably inserted into the cylindrical portion 62c. In other words, the inner diameter of the cylindrical portion 62c and the outer diameter of the rotating shaft portion 61c are set so that a predetermined gap is formed between the inner peripheral surface of the cylindrical portion 62c and the outer peripheral surface of the rotating shaft portion 61c. In addition, the thickness of the peripheral wall portion of the cylindrical portion 62c is set to be thinner than the gap S shown in FIG. 9A.

When connecting the first connection part 61 and the second connection part 62, first, the pivot shaft part 61c is removed from the main body part 61a. Then, the pivot shaft part 61c is inserted into the tube part 62c of the second connection part 62. Next, the upper and lower ends of the pivot shaft part 61c are welded to the main body part 61a of the first connection part 61. This allows the first connection part 61 and the second connection part 62 to rotate relatively around the pivot shaft part 61c.

Therefore, as shown in Figures 3 and 4, by connecting the deck beams 23 to 26 using a pivoting beam joint 60, the second deck 2B can be transformed from a rectangle to a parallelogram and from a parallelogram to a rectangle in a plan view.

As shown in FIG. 1, the first intermediate deck beam 23 is a component of the first deck 2A, and therefore needs to be connected to the right short deck beam 21 and the left short deck beam 22. In this case, a connecting plate portion 62d (shown only in FIG. 3) made of a plate material similar to that of the main body portion 62a is provided on the tubular portion 62c of the second connecting portion 62 of the pivot beam joint 60, and this connecting plate portion 62d can be inserted between a pair of left and right plates constituting one side connecting member of the left short deck beam 22 and attached with the fasteners described above. The connection to the right short deck beam 21 can also be made by the connecting plate portion 62d in the same manner.

(Non-rotating beam joint)
In addition to being able to connect the deck beams 20 to 35 using the above-mentioned rotating beam joint 60, as shown in Figures 11 to 14, the deck beams 20 to 35 can also be connected using first to fourth non-rotating beam joints 70 to 73. The first to fourth non-rotating beam joints 70 to 73 may be used as needed. The first to fourth non-rotating beam joints 70 to 73 have a vertically symmetrical structure with a center line extending in the horizontal direction as the center of symmetry. Therefore, the first to fourth non-rotating beam joints 70 to 73 can be used by being upside down.

As shown in FIG. 11, the first non-rotating beam joint 70 is a member for connecting two deck beams 36, 37 when they are arranged in series in the longitudinal direction. FIG. 11 shows an example in which one end of the deck beam 36 is connected to one end of the deck beam 37, but any deck beams arranged in series can be connected by the first non-rotating beam joint 70. Note that although the first non-rotating beam joint 70 is not shown in FIG. 1, if the deck beams 36, 37 connected in series as in FIG. 11 are included in the suspended scaffolding 1, the first non-rotating beam joint 70 can be used.

The first non-rotating beam joint 70 is composed of a plate material inserted between the pair of left and right plate materials 42a, 42b constituting one side connecting member 42 of the deck beam 36 and between the pair of left and right plate materials 42a, 42b constituting one side connecting member 42 of the deck beam 37, and the thickness and vertical dimension of this plate material are the same as the thickness and vertical dimension of the main body 61a of the rotating beam joint 60. The length of the first non-rotating beam joint 70 is set so that it protrudes from between the plate materials 42a, 42b when inserted between the plate materials 42a, 42b of the deck beam 36, and the protruding part has an insertion hole 70b into which the fastener 63 is inserted. The length of the first non-rotating beam joint 70 is set so that it protrudes from between the plate materials 42a, 42b when inserted between the plate materials 42a, 42b of the deck beam 37, and the protruding part has an insertion hole 70c into which the fastener 63 is inserted. In other words, the connection structure between the first non-rotating beam joint 70 and the deck beams 36, 37 is the same as the connection structure between the first non-rotating beam joint 70 and the deck beams 36, 37, except that it cannot rotate. Therefore, like the rotating beam joint 60, the first non-rotating beam joint 70 can be attached so that it does not come off the deck beams 20 to 35. The center of the first non-rotating beam joint 70 is provided with a main body 70A made of a circular tube material extending in the vertical direction. The main body 70A has a through hole 70a that penetrates the peripheral wall. The through hole 70a can be engaged with the lower side of the hanging member 4 like the second non-rotating beam joint 71 described later.

The second non-rotating beam joint 71 shown in FIG. 13 is a member for connecting mutually orthogonal parts, such as the base end deck beam 20 and the right short deck beam 21 shown in FIG. 1. In addition to the base end deck beam 20 and the right short deck beam 21, the second non-rotating beam joint 71 can also be used, for example, when connecting the third right deck beam 30 and the first rear deck beam 32. In the explanation of the second non-rotating beam joint 71, the base end deck beam 20 and the right short deck beam 21, which are mutually orthogonal, can also be called the first deck beam and the second deck beam, respectively.

The second non-rotating beam joint 71 comprises a main body (joint body) 71a, a first connection part 71b, and a second connection part 71c. The main body 71a is made of a circular pipe material extending in the vertical direction, and its vertical dimension is set to be shorter than the vertical dimension of the deck beams 20 to 35. The main body 71a is designed to allow the hanging member 4 to be inserted. The main body 71a also has a number of through holes 71f that penetrate the peripheral wall. With the hanging member 4 inserted in the main body 71a, a pin (not shown) can be inserted from the outside into the through hole 71f and passed through the hole of the chain that constitutes the hanging member 4 to fix the main body 71a to the hanging member 4.

The first connection part 71b is made of a plate material similar to the main body part 61a of the rotating beam joint 60, and an insertion hole 71d for inserting the fastener 63 is formed in the part protruding from between the pair of left and right plate materials 42a, 42b that make up the one-side connecting member 42. The second connection part 71c is made of a plate material similar to the main body part 62a of the rotating beam joint 60, and an insertion hole 71e for inserting the fastener 63 is formed in the part protruding from between the pair of left and right plate materials 42a, 42b that make up the one-side connecting member 42. Therefore, the second non-rotating beam joint 71 can be attached to the deck beams 20 to 35 without coming off, just like the rotating beam joint 60.

The base end of the first connection part 71b and the base end of the second connection part 71c are fixed to the outer peripheral surface of the main body part 71a, for example, by welding. In plan view, the first connection part 71b and the second connection part 71c protrude in directions perpendicular to each other. This makes it possible to connect perpendicular parts to each other, such as the base end deck beam 20 and the right side short deck beam 21.

The third non-rotating beam joint 72 shown in FIG. 14 is a member for connecting three deck beams, including those that are orthogonal, such as the right short deck beam 21, the first intermediate deck beam 23, and the first right deck beam 24 shown in FIG. 1. In addition to the right short deck beam 21, the first intermediate deck beam 23, and the first right deck beam 24, the third non-rotating beam joint 72 can be used when connecting two deck beams arranged in series and a deck beam that is orthogonal to these deck beams arranged in series. In the explanation of the third non-rotating beam joint 72, the right short deck beam 21 and the first intermediate deck beam 23 that are orthogonal to each other can also be called the first deck beam and the second deck beam, respectively, and the first right deck beam 24 can be called the third deck beam.

The third non-rotating beam joint 72 has a main body (joint body) 72a, a first connection part 72b, and a second connection part 72c that are configured similarly to the main body 71a, first connection part 71b, and second connection part 71c of the second non-rotating beam joint 71, and also has a third connection part 72g. The main body 72a has a through hole 72f into which a pin (not shown) can be inserted from the outside. The first connection part 71b and the second connection part 71c have insertion holes 72d, 72e into which the fastener 63 is inserted, respectively.

The third connection part 72g is made of a plate material similar to the first connection part 72b and the second connection part 72c, and is inserted between the pair of left and right plate materials 42a, 42b that make up one side connecting member 42 of the first right deck beam 24, and is connected to the pair of plate materials 42a, 42b. The third connection part 72g has an insertion hole 72h into which the fastener 63 is inserted.

The base end of the third connection portion 72g is fixed to the outer peripheral surface of the main body portion 72a, for example, by welding. In plan view, the second connection portion 72c and the third connection portion 72g protrude in directions perpendicular to each other. Furthermore, the first connection portion 72b and the third connection portion 72g are arranged so as to be aligned on the same straight line. This allows the right short deck beam 21, the first intermediate deck beam 23, and the first right deck beam 24 to be connected to each other. Note that the first connection portion 72b and the third connection portion 72g may protrude in directions perpendicular to each other in plan view.

The fourth non-rotating beam joint 73 shown in FIG. 15 is a member for connecting four deck beams, including those that are perpendicular, such as the second left deck beam 28, the third intermediate deck beam 29, the third left deck beam 31, and the second rear deck beam 34 shown in FIG. 1. In addition to the second left deck beam 28, the third intermediate deck beam 29, the third left deck beam 31, and the second rear deck beam 34, the fourth non-rotating beam joint 73 can be used when connecting two deck beams arranged in series and two deck beams arranged in series in a direction perpendicular to these deck beams arranged in series.

The fourth non-rotating beam joint 73 has a main body (joint body) 73a, a first connection part 73b, a second connection part 73c, and a third connection part 73g, which are configured similarly to the main body 72a, the first connection part 72b, the second connection part 72c, and the third connection part 72g of the third non-rotating beam joint 72, and also has a fourth connection part 73i. The main body 73a has a through hole 73f into which a pin (not shown) can be inserted from the outside. In addition, the first connection part 73b, the second connection part 73c, and the third connection part 73g have insertion holes 73d, 73e, and 73h into which the fastener 63 is inserted, respectively.

The fourth connection part 73i is made of the same plate material as the first connection part 73b, the second connection part 73c, and the third connection part 73g, and is inserted between the pair of left and right plate materials 42a, 42b that constitute one side connecting member 42 of the second rear deck beam 34, for example, and connected to the pair of plate materials 42a, 42b. An insertion hole 73j into which the fastener 63 is inserted is formed in the fourth connection part 73i.

The base end of the fourth connection portion 73i is fixed to the outer peripheral surface of the main body portion 73a, for example by welding. In a plan view, the first connection portion 73b, the third connection portion 73g, and the fourth connection portion 73i protrude in directions perpendicular to each other. Furthermore, the second connection portion 73c and the fourth connection portion 73i are arranged so as to be aligned on the same straight line. This allows the second left deck beam 28, the third intermediate deck beam 29, the third left deck beam 31, and the second rear deck beam 34 to be connected to each other.

(Vertical moving deck beam)
Fig. 16 is a side view of the deck beam 300 that is connected to the beam joint 200 (shown in Figs. 19 and 20, etc.) by moving it from above to below. Any of the deck beams 20 to 35 can be replaced with the deck beam 300. In that case, the suspended scaffolding 1 is constructed using the beam joint 200 shown in Figs. 19 and 20. Also, the suspended scaffolding 1 may be constructed with the deck beam 300 without using the deck beams 20 to 35. The length of the deck beam 300 can be set arbitrarily.

The deck beam 300 includes an upper pipe material 301 extending horizontally, a lower pipe material 302 arranged below and away from the upper pipe material 301 and extending parallel to the upper pipe material 301, a one-side connecting material 303, and an other-side connecting material 304. The upper pipe material 301 and the lower pipe material 302 are made of the same materials as the upper pipe material 40 and the lower pipe material 41 of the base end deck beam 20, and the upper pipe material 301 and the lower pipe material 302 are arranged so as not to be aligned in the left-right direction perpendicular to the longitudinal direction of the deck beam 300 in a plan view. The upper pipe material 301 and the lower pipe material 302 may be arranged so as to be aligned in the left-right direction of the deck beam 300 in a plan view. In addition, pipe materials other than the upper pipe material 301 and the lower pipe material 302 may be provided.

As shown in FIG. 17, one-side connecting member 303 extends vertically from one end of upper pipe member 301 to one end of lower pipe member 302, and is composed of a pair of metal plate members 303a, 303b that face each other with a gap between them in the left-right direction (horizontal direction). A gap R is formed between the pair of plate members 303a, 303b. The left-right dimension of gap R is the same from the top to the bottom.

The upper part of the left plate material 303a is fixed to the lower part of the outer circumferential surface of one end of the upper pipe material 301. The left plate material 303a continues to one end of the lower pipe material 302 and also extends in the longitudinal direction of the deck beam 300, and is offset to the left from the axis of the upper pipe material 301 and the lower pipe material 302 in a plan view. The lower part of the left plate material 303a is fixed to one end of the lower pipe material 302 and protrudes outward in the axial direction of the lower pipe material 302 (to the left in FIG. 16) beyond the one end of the lower pipe material 302.

The right plate 303b is parallel to the left plate 303a and is offset to the right from the axis of the upper pipe material 301 and the lower pipe material 302 in plan view. That is, the upper part of the right plate 303b is fixed to the lower part of the outer circumferential surface of one end of the upper pipe material 301. The right plate 303b is continuous to one end of the lower pipe material 302 and also extends in the longitudinal direction of the deck beam 300, and is offset to the right from the axis of the upper pipe material 301 and the lower pipe material 302 in plan view. The lower part of the right plate 303b is fixed to one end of the lower pipe material 302 and protrudes outward in the axial direction of the lower pipe material 302 (to the left in FIG. 16) beyond one end of the lower pipe material 302. In plan view, the left and right plate members 303a and 303b are positioned so that they are hidden by the upper pipe member 301.

The lower portions of the pair of plate materials 303a, 303b protrude axially outward beyond one end of the lower pipe material 302, so that the gap R between the pair of plate materials 303a, 303b opens downward. Also, one end of the upper pipe material 301 is located further outward in the longitudinal direction of the deck beam 300 (left side in FIG. 16) than one end of the lower pipe material 302. In other words, the upper pipe material 301 is composed of a longer member than the lower pipe material 302.

In addition, insertion holes 303c, 303d, into which fasteners 63 as shown in FIG. 10 are inserted, are formed in the vertical middle of the pair of plate members 303a, 303b so as to penetrate in the left-right direction.

As shown in FIG. 16, the other-side connecting member 304 extends vertically from the other end of the upper pipe member 301 to the other end of the lower pipe member 302 and is composed of a pair of metal plate members 303a (only one plate is shown) that face each other with a gap in the left-right direction (horizontal direction), and the other-side connecting member 304 and the one-side connecting member 303 are similar. An insertion hole 304c into which a fastener 63 as shown in FIG. 10 is inserted is formed in the vertical middle part of the pair of plate members 304a that constitute the other-side connecting member 304 so as to penetrate in the left-right direction. In addition, the deck beam 300 has a symmetrical structure with a straight line extending vertically through the longitudinal center as the center of symmetry.

16 and 18, the deck beam 300 includes an intermediate plate 305. The intermediate plate 305 is provided in a pair on the left and right, and extends from the longitudinal middle of the upper pipe material 301 to the longitudinal middle of the lower pipe material 302. The upper end of the intermediate plate 305 is fixed to the lower part of the outer circumferential surface of the upper pipe material 301. The lower end of the intermediate plate 305 is fixed to the upper part of the outer circumferential surface of the lower pipe material 302. The intermediate plate 305 can also be fixed to the upper pipe material 301 and the lower pipe material 302 by welding or the like, similar to the plate materials 30a and 304a. Therefore, the upper pipe material 301 and the lower pipe material 302 are connected not only at both ends in the longitudinal direction but also at their middle parts, so that the deck beam 300 can ensure high strength. A through hole 305a is formed in the vertical middle part of the intermediate plate 305.

The beam joint 200 shown in Figures 19 and 20 is capable of connecting up to four deck beams 300. The beam joint 200 comprises a joint body 200a made of a cylindrical member extending in the vertical direction, a first connecting plate portion 200b, a second connecting plate portion 200c, a third connecting plate portion 200d, and a fourth connecting plate portion 200e. A plurality of through holes 200j are formed at the top and bottom of the joint body 200a, into which pins (not shown) can be inserted from the outside.

The first connecting plate portion 200b, the second connecting plate portion 200c, the third connecting plate portion 200d, and the fourth connecting plate portion 200e extend in the vertical direction and are inserted between the pair of plate materials 303a, 303b of the deck beam 300 and connected to the pair of plate materials 303a, 303b. Since the pair of plate materials 303a, 303b constituting the one-side connecting member 303 and the pair of plate materials 304a constituting the other-side connecting member 304 are the same, the first connecting plate portion 200b, the second connecting plate portion 200c, the third connecting plate portion 200d, and the fourth connecting plate portion 200e can also be inserted between the pair of plate materials 304a and connected to the pair of plate materials 304a.

The thicknesses of the first connecting plate portion 200b, the second connecting plate portion 200c, the third connecting plate portion 200d, and the fourth connecting plate portion 200e are set to be slightly narrower than the distance between the pair of plate materials 303a, 303b. This allows the first connecting plate portion 200b, the second connecting plate portion 200c, the third connecting plate portion 200d, and the fourth connecting plate portion 200e to be easily inserted between the pair of plate materials 303a, 303b.

The base ends of the first connecting plate portion 200b, the second connecting plate portion 200c, the third connecting plate portion 200d, and the fourth connecting plate portion 200e are fixed to the outer surface of the joint body 200a by welding or the like. The first connecting plate portion 200b, the second connecting plate portion 200c, the third connecting plate portion 200d, and the fourth connecting plate portion 200e are spaced equally apart in the circumferential direction of the joint body 200a, and the first connecting plate portion 200b, the second connecting plate portion 200c, the third connecting plate portion 200d, and the fourth connecting plate portion 200e are positioned at 90° intervals, similar to the fourth non-rotating beam joint 73 shown in FIG. 15.

The first connecting plate portion 200b, the second connecting plate portion 200c, the third connecting plate portion 200d, and the fourth connecting plate portion 200e are formed with insertion holes 200f, 200g, 200h, and 200i, respectively, for inserting the fasteners 63. The insertion holes 200f, 200g, 200h, and 200i are formed to coincide with the insertion holes 303c, 303d, and 304c of the deck beam 300.

The vertical dimensions of the first connecting plate portion 200b, the second connecting plate portion 200c, the third connecting plate portion 200d, and the fourth connecting plate portion 200e are set shorter than the vertical dimension of the joint body 200a. In addition, the vertical dimensions of the plates 303a, 303b, and 304a of the deck beam 300 are set longer than the vertical dimensions of the first connecting plate portion 200b, the second connecting plate portion 200c, the third connecting plate portion 200d, and the fourth connecting plate portion 200e. Any one or two of the first connecting plate portion 200b, the second connecting plate portion 200c, the third connecting plate portion 200d, and the fourth connecting plate portion 200e may be omitted. For example, if the fourth connecting plate portion 200e is omitted, the beam joint 200 will have the first connecting plate portion 200b, the second connecting plate portion 200c, and the third connecting plate portion 200d.

When connecting the deck beam 300 to the beam joint 200, first, the deck beam 300 is placed above the beam joint 200. At this time, the relative positions of the deck beam 300 and the beam joint 200 are adjusted so that any one of the first connecting plate portion 200b, the second connecting plate portion 200c, the third connecting plate portion 200d, and the fourth connecting plate portion 200e of the beam joint 200 is located below the gap R between the pair of plate materials 303a and 303b of the deck beam 300. For example, as shown in Figures 21 and 22, after positioning the third connecting plate portion 200d of the beam joint 200 below the gap R between the pair of plate materials 303a and 303b of the deck beam 300, the deck beam 300 is moved downward to insert the third connecting plate portion 200d into the gap R between the pair of plate materials 303a and 303b. After insertion, one end of the upper pipe material 301 will be positioned above the third connecting plate portion 200d, so the deck beam 300 will not fall from the beam joint 200.

Then, fasteners 63 as shown in FIG. 10 are inserted into the through holes 303c of the plate material 303a, the through holes 200h of the third connecting plate part 200d, and the through holes 303d of the plate material 303b to prevent them from coming loose. The beam joint 200 can also be connected to the other first connecting plate part 200b, the second connecting plate part 200c, and the fourth connecting plate part 200e in the same manner. Note that fasteners such as pins (not shown) may be inserted instead of the fasteners 63.

(Effects of the embodiment)
As described above, according to this embodiment, a systemized suspended scaffolding 1 can be constructed using multiple deck beams 20-35 and panel materials 3, as shown in Figures 1 and 2. This significantly reduces the time required for construction compared to conventional single-pipe suspended scaffolding. In addition, since the upper pipe material 40 and the lower pipe material 41 constituting the deck beams 20-35 are not aligned in a direction perpendicular to the longitudinal direction of the deck beams 20-35 in a plan view, the left-right dimensions of the deck beams 20-35 are significantly shorter than those of a beam unit with a truss structure.

In addition, by shortening the left-right dimensions of the deck beams 20-35, the probability of interference with piping, etc. is reduced when constructing the suspended scaffolding 1 in a building with multiple, intricately intertwined pipes, such as a plant, and the freedom to construct the suspended scaffolding 1 is improved.

In addition, the fact that the pipe materials 40, 41 are not lined up in the left-right direction of the deck beams 20-35 means that the number of parts that make up the deck beams 20-35 is reduced, and therefore the deck beams 20-35 are lighter. Because the deck beams 20-35 are light, they are easier to transport and install. For example, when constructing a pre-floor construction type suspended scaffolding 1, the extension deck beams 24-35 can be connected to the deck beams 20-23 that are suspended in advance. At this time, the extension deck beams 24-35 are lightweight, which improves workability.

In addition, conventional wooden scaffolding boards, steel scaffolding boards, anti-skids, etc. can be installed as panel materials 3 on the upper pipe material 40 and the lower pipe material 41, making it highly versatile. In addition, the cloth material 90 for system scaffolding can be connected to any position on the upper pipe material 40 and the lower pipe material 41 for use, so even though it is a systemized suspended scaffolding 1, it has a high degree of freedom.

In addition, when connecting the deck beam 300 shown in FIG. 16 etc. to the beam joint 200 shown in FIG. 19 etc., the deck beam 300 can be moved from above to below the beam joint 200, so the suspended scaffolding 1 can be assembled according to the site where it is to be constructed.

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 described above, the suspended scaffolding disclosed herein can be used, for example, as temporary scaffolding constructed in various plants, etc.

REFERENCE SIGNS LIST 1 Suspended scaffolding 2 Deck 3 Panel material 200 Beam joint 200a Joint body 200b Connection plate portion 300 Deck beam 301 Upper pipe material 302 Lower pipe material 303 Connecting material 303a, 303b Plate material R Gap

Claims (5)

A plurality of deck beams connected to form a rectangular shape in a plan view;
A panel material that is installed on the deck beam and constitutes a work floor;
A hanging scaffolding including a hanging member for hanging the deck beam to a building,
A beam joint is provided to connect the deck beams.
A connecting member is provided at the end of the deck beam, the connecting member being made of a pair of plate members extending in the vertical direction and facing each other with a horizontal gap therebetween, and a gap that opens downward is formed between the pair of plate members.
The beam joint has a joint body made of a cylindrical member extending in a vertical direction, and a connecting plate portion extending in a vertical direction and inserted between the pair of plate members to connect the pair of plate members ,
A suspended scaffolding in which the base end of the connecting plate portion is fixed to the outer surface of the joint body . The suspended scaffolding according to claim 1,
The deck beam includes an upper pipe member extending horizontally, and a lower pipe member disposed below and spaced apart from the upper pipe member and extending parallel to the upper pipe member;
The connecting material is fixed to the end of the upper pipe material and the end of the lower pipe material, connecting the upper pipe material and the lower pipe material. The suspended scaffolding according to claim 2,
A suspended scaffolding in which the upper pipe material and the lower pipe material are arranged so that they are not lined up in the left-right direction perpendicular to the longitudinal direction of the deck beam when viewed in a plan view. The suspended scaffolding according to claim 2 or 3,
The upper portions of the pair of plate members are fixed to the ends of the upper pipe member,
A suspended scaffold in which the lower parts of the pair of plate materials are fixed to the ends of the lower pipe material and protrude axially outward beyond the ends of the lower pipe material. The suspended scaffolding according to claim 4,
A suspended scaffolding in which the end of the upper pipe material is located longitudinally outward of the deck beam more than the end of the lower pipe material.