KR20250111746A - Monorail system and related scaffold structures, systems and methods of use - Google Patents

Abstract

A monorail assembly comprises a first scaffolding system comprising at least one framework member having a plurality of panel points extending along the lower code and an elongated structure; at least one monorail beam; and at least one bracket structure configured to be secured to the at least one framework member at or about the at least two panel points and to the at least one monorail beam.

Description

MONORAIL SYSTEM AND RELATED SCAFFOLD STRUCTURES, SYSTEMS AND METHODS OF USE

The present disclosure relates to access systems, and particularly to systems designed to access the lower and side surfaces of large fixed structures. More particularly, the present disclosure relates to a monorail system used in combination with a scaffold structure, wherein an additional scaffold structure can be suspended and moved from the monorail system relative to the structure being accessed, parallel and perpendicular to the monorail track.

In the construction, repair and restoration industries where there is a need to access the side and subsurfaces of structures under construction, it is often impractical or impossible to access these surfaces from below (e.g. by installing standard scaffolding). Some examples are bridges, particularly arched bridges over ravines or rivers. Access to the subsurfaces of these bridges is often difficult because scaffolding cannot be built upwards from the ground and the presence of the arches, which create surfaces of constantly changing height, makes access much more difficult. The same applies to certain side surfaces.

Suspension scaffolds are known and can be used in certain cases to access such side surfaces and subsurfaces. Suspension scaffolds present their own challenges. For example, it may be impractical or impossible to suspend the scaffold in a position where the worker can access the required surface. The length of the surface may also be a limiting factor. If the structure being accessed spans a long length, the amount of suspended scaffolding may require multiple assembly/disassembly cycles to complete the entire task. Furthermore, particularly in the case of arched structures, the suspended scaffold may need to have multiple heights, which adds further complexity and time to assembly/disassembly.

Therefore, in view of the above, it would be advantageous to provide a system or structure that addresses one or more of the above deficiencies or other problems.

According to at least some embodiments of the present disclosure, a monorail assembly is provided herein.

According to at least some embodiments of the present disclosure, a monorail system is provided herein.

According to at least some embodiments of the present disclosure, a method of evaluating a structure is provided herein.

In an embodiment, the present disclosure provides a monorail assembly. According to an embodiment of the present disclosure, the monorail assembly comprises a first scaffold system comprising at least one framework member being an elongated structure having a bottom chord and a plurality of panel points along the bottom chord; at least one monorail beam; and at least one bracket structure configured to be secured to the at least one framework member at or about at least two of the panel points and to the at least one monorail beam.

In an embodiment, the at least one monorail beam does not contact the at least one framework member when secured to the at least one bracket structure. In another embodiment, the monorail assembly further comprises at least one joist bracket connected to the at least one monorail beam and the at least one bracket structure. In yet another embodiment, the monorail assembly further comprises at least one joist bracket, wherein connection of the at least one monorail beam to the at least one framework member is achieved by connection of the at least one joist bracket and the at least one bracket structure. In another embodiment, the monorail assembly further comprises at least one end stop secured to the at least one monorail beam.

In accordance with an embodiment, the monorail assembly further includes at least two trolley structures slidably secured to the first scaffolding system and configured to secure the second scaffolding system. In an embodiment, the at least two trolley structures are slidably secured to the at least one elongated structure. In another embodiment, the first scaffolding system includes at least two framework members.

In an embodiment, the present disclosure provides a monorail system. According to an embodiment of the present disclosure, the monorail system includes a first scaffolding system; a monorail assembly secured to the first scaffolding system and including at least one monorail beam; and a second scaffolding system suspended from the at least one monorail beam.

In accordance with an embodiment, the second scaffold system moves both laterally along the at least one monorail beam and vertically relative to the at least one monorail beam. In another embodiment, the first scaffold system is a suspended articulating scaffold system. In another embodiment, the monorail assembly further comprises at least one bracket structure configured to be secured to the first scaffold system. In another embodiment, the second scaffold system is a monorail vehicle. In another embodiment, the second scaffold system is a suspended scaffold. In another embodiment, the monorail assembly further comprises at least two trolley structures slidably secured to the first scaffold system.

FIG. 1A is a schematic side view of a scaffolding system including a plurality of monorail systems according to an embodiment of the present disclosure.
Figure 1b is a detailed drawing of the callout (1B) of Figure 1a.
FIG. 2 is a side view of a monorail assembly secured to the lower side of a ladder system according to an embodiment of the present disclosure.
FIG. 3A is a top perspective view of a joist bracket for use with a monorail assembly, according to an embodiment of the present disclosure.
Figure 3b is an exploded view of the joist bracket of Figure 3a.
Figure 3c is a side perspective view of the assembled joist bracket of Figure 3b.
FIG. 4A is a side view of a monorail beam for use with a monorail assembly according to an embodiment of the present disclosure.
Fig. 4b is a cross-sectional view of the monorail beam of Fig. 4a.
FIG. 5A is a side perspective view of a monorail beam and two monorail coupling bracket assemblies according to an embodiment of the present disclosure.
Figure 5b is a drawing illustrating a portion of Figure 5a in more detail.
FIGS. 5c and 5d are exploded views illustrating the assembly of a monorail coupling bracket assembly on a monorail beam, according to an embodiment of the present disclosure.
FIG. 5e is an end perspective view illustrating the assembled monorail coupling bracket assembly of FIGS. 5c and 5d.
FIG. 6A is a side perspective view of an end stop for a monorail assembly according to an embodiment of the present disclosure.
Figure 6b is an exploded view of the end stop of Figure 6a.
Figure 6c is an end perspective view of the assembled end stop of Figure 6a.
FIG. 7A is a top perspective view of a portion of a scaffolding system having assembled and illustrated joist brackets prior to attachment of a monorail beam, according to an embodiment of the present disclosure.
FIG. 7b is a plan view of the embodiment of FIG. 7a with a monorail beam positioned according to an embodiment of the present disclosure.
FIG. 7c is a detailed top perspective view of a portion of the embodiment illustrated in FIG. 7a, showing the monorail beam in place and attaching the monorail beam to the joist bracket, according to an embodiment of the present disclosure.
FIG. 7d is a side view of the embodiment shown in FIG. 7c having a monorail beam connected to a joist bracket, according to an embodiment of the present disclosure.
FIG. 7e is a top perspective view illustrating attachment of an end stop according to an embodiment of the present disclosure.
FIG. 7f is a top perspective view of the embodiment shown in FIG. 7e with the end stop fully assembled.
FIG. 8A is a side view illustrating a monorail assembly secured to a portion of a suspended scaffolding system according to an embodiment of the present disclosure.
Figure 8b is a bottom perspective view of the embodiment illustrated in Figure 33a.
Figure 8c is a side perspective view of the embodiment illustrated in Figure 33a.
FIG. 9 is a top perspective view of an interconnecting structure for use in a suspended scaffolding system according to the present disclosure.
FIG. 10 is a plan view of the interconnection structure of FIG. 9 according to the present disclosure.
FIG. 11 is a side view of the interconnection structure of FIG. 9 according to the present disclosure.
FIG. 12 is a bottom view of the interconnection structure of FIG. 9 according to the present disclosure.
FIG. 13 is a top perspective view of an interconnection between an interconnection structure and a joist for use in a suspended scaffolding system according to the present disclosure.
FIG. 14a is an exploded perspective plan view of the interconnection of FIG. 13 according to the present disclosure.
FIG. 14b is a top perspective view of the drawing of FIG. 14a according to the present disclosure.
FIG. 15 is a top perspective view of a single unit of a suspended ladder system according to an embodiment of the present disclosure.
FIG. 16A is a top perspective view of the interconnection between a joist and a deck support for a suspended scaffolding system according to an embodiment of the present disclosure.
FIG. 16b is an exploded, reverse top perspective view of the interconnection of FIG. 16a, according to an embodiment of the present disclosure.
FIG. 16c is an enlarged top perspective view of the interconnection of FIG. 16b, according to an embodiment of the present disclosure.
FIG. 17 is a top perspective view of a single unit of a suspended ladder system according to an embodiment of the present disclosure.
FIG. 18 is a top perspective view of a second embodiment of a single unit of a suspended ladder system according to an embodiment of the present disclosure.
FIG. 19A is a top perspective view of a portion of a joist, interconnecting structure, and deck retainer assembly for use in a suspended scaffolding system, according to an embodiment of the present disclosure.
FIG. 19b is an exploded, enlarged perspective view of the joist, interconnecting structure, and deck retainer assembly of FIG. 19a, according to an embodiment of the present disclosure.
FIG. 19c is an end cross-sectional view of a portion of a joist and deck retainer assembly, such as that illustrated in FIG. 19a, according to an embodiment of the present disclosure.
FIG. 20 is a top perspective view of an embodiment of a working platform of a suspended ladder system according to an embodiment of the present disclosure.
FIG. 21 is a bottom perspective view of the embodiment illustrated in FIG. 20, according to an embodiment of the present disclosure.
FIG. 22 is a top perspective view of a portion of the working platform illustrated in FIG. 20, having a single unit of the working platform for a suspended scaffolding system illustrated prior to jointing, according to an embodiment of the present disclosure.
FIG. 23 is a top perspective view of the embodiment of FIG. 22 having a single unit with a movable joint, according to an embodiment of the present disclosure.
FIG. 24 is a top perspective view of the embodiment of FIG. 23 with a single unit with an additional joint progressing according to an embodiment of the present disclosure.
FIG. 25 is a top perspective view of the embodiment of FIG. 24 having a single unit with an additional joint progressing according to an embodiment of the present disclosure.
FIG. 26 is a top perspective view of the embodiment of FIG. 22 having a single unit with a completed joint, according to an embodiment of the present disclosure.
FIG. 27A is a top perspective view of a joist and interconnecting structure subassembly for use in a suspended scaffolding system, according to an embodiment of the present disclosure.
FIG. 27b is a top perspective view of a second embodiment of a joist and interconnecting structure subassembly for use in a suspended scaffolding system, according to an embodiment of the present disclosure.
FIG. 27c is a top perspective view of a third embodiment of a joist and interconnecting structure subassembly for use in a suspended scaffolding system, according to an embodiment of the present disclosure.
FIG. 27d is a top perspective view of a fourth embodiment of a joist and interconnecting structure subassembly for use in a suspended scaffolding system, according to an embodiment of the present disclosure.
FIG. 28a is a plan view of an embodiment of a suspended scaffolding system according to an embodiment of the present disclosure.
FIG. 28b is a plan view of a second embodiment of a suspended ladder system according to an embodiment of the present disclosure.
FIG. 29 is a cross-sectional view of a suspended scaffolding system suspended from a structure according to an embodiment of the present disclosure.
FIG. 30A is a top perspective view of the interface between a suspension connector and an interconnecting structure for use with a suspension scaffolding system according to an embodiment of the present disclosure.
FIG. 30b is an enlarged view of the interface illustrated in FIG. 30a, according to an embodiment of the present disclosure.
FIG. 31A is a cross-sectional view of an interconnecting structure, a suspension connector, and a structure attachment device for use with a suspension scaffolding system, according to an embodiment of the present disclosure.
FIG. 31b is an enlarged cross-sectional view of the interconnection between the interconnection structure of FIG. 31a and the suspension connector according to an embodiment of the present disclosure.
FIG. 32A is a top perspective view of an auxiliary suspender mounting bracket for use with a suspended ladder system according to an embodiment of the present disclosure.
Figure 32b is a plan view of the auxiliary suspender device mounting bracket of Figure 32a.
Figure 32c is a front view of the auxiliary suspender mounting bracket of Figure 32a.
Figure 32d is a side view of the auxiliary suspender mounting bracket of Figure 32a.
FIG. 33 is a cross-sectional elevational view illustrating suspension of a work platform for a scaffolding system suspended from a structure via auxiliary suspender mounting brackets according to an embodiment of the present disclosure.
FIG. 34A is an elevational view of an embodiment of a suspended scaffolding system used in connection with an arched bridge, according to an embodiment of the present disclosure.
FIG. 34b is an elevational view of a second embodiment of a suspended scaffolding system used in connection with an arched bridge, according to an embodiment of the present disclosure.
FIG. 34c is an elevational view of a third embodiment of a suspended scaffolding system used in connection with a structure according to an embodiment of the present disclosure.
FIG. 35 is a side perspective view of a second embodiment of a suspended scaffolding system used in connection with a structure according to an embodiment of the present disclosure.
Fig. 36 is a detailed drawing of the callout (7) of Fig. 1a.
Fig. 37 is a cross-sectional view taken from AA of Fig. 1a.
Fig. 38 is a cross-sectional view taken from BB of Fig. 1a.
Fig. 39 is a detailed drawing of the callout (2) of Fig. 37.
Fig. 40 is a detailed drawing of the callout (3) of Fig. 37.
Fig. 41 is a detailed drawing of the callout (4) of Fig. 37.
Fig. 42 is a detailed drawing of the callout (5) of Fig. 37.
Fig. 43 is a detailed drawing of the callout (6) of Fig. 38.
Fig. 44 is a detailed drawing of the callout (1) of Fig. 1a.
Fig. 45 is a detailed drawing of the callout (1) of Fig. 44.
Fig. 46 is a cross-sectional view taken from CC of Fig. 44.
Fig. 47 is a cross-sectional view taken from DD of Fig. 1a.
While certain preferred embodiments of the present disclosure have been illustrated and described in detail, it should be understood that various changes and modifications may be made therein without departing from the scope of the appended claims. The scope of the present disclosure is in no way limited to the number of constituent components, their materials, their shapes, their relative arrangements, and the like, which are disclosed merely as examples of embodiments. The features and advantages of the present disclosure are illustrated in detail in the accompanying drawings, in which like reference numerals designate like components throughout.

As a preface to the detailed description, it should be noted that, as used in this specification and the appended claims, the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise.

As used herein, a joint is defined as the ability to swing and/or rotate about a pivot point or axis.

As used herein, the terms "single section," "unit," or "single unit," when used in connection with a scaffolding system, refer to a planar structure comprising at least three corners and elongated members (e.g., joists, bars, framework, etc.) and other structures that support and define a floor area. The terms "section" and/or "unit" may be used interchangeably. Furthermore, adjacent sections or units of a scaffolding system may share one or more components, for example, two adjacent sections of a scaffolding system may have a common corner or share a framework member.

FIG. 1A is a side schematic diagram of a plurality, specifically three, monorail systems (700) employed for a structure (90). Specifically, depicted in FIG. 1A is a scaffolding system (100) comprising a plurality of monorail assemblies (600) according to an embodiment of the present disclosure, and FIG. 1B is a detailed view of a callout (1B) of FIG. 1A. Depicted in FIGS. 1A and 1B is a structure (90) which is an arched bridge in this embodiment, but may be any accessible structure in further embodiments. Each arch (91) of the bridge comprises three distinct surfaces, namely two side surfaces (91a, 91b) (not shown) and a lower (bottom) surface (91c). To access each of the three surfaces (91a, 91b, 91c), the bridge (90) comprises four monorail assemblies (600), two on each side of the bridge (90). Each monorail assembly (600) is secured to the lower portion of the ladder system (100), an exemplary embodiment of which is illustrated in FIG. 2.

The monorail assembly (600) is used to suspend additional scaffolding systems (800). In the exemplary embodiment illustrated in FIGS. 1a and 1b, a total of three scaffolding systems are suspended from the monorail assembly (600), one for accessing each of the three surfaces (91a, 91b, 91c). To access the side surfaces (91a, 91b), the scaffolding systems are suspended from a single monorail assembly (600) on either side of the bridge (90). That is, each scaffolding system used to access the side surfaces (91a, 91b) is suspended from a single monorail assembly (600). In contrast, the scaffolding systems used to access the lower surface (91c) are suspended from two monorail assemblies (600), such that the scaffolding systems span the width of the lower surface (91c) and are supported at both ends.

Each monorail assembly (or monorail assemblies) (600), a scaffolding system (100) to which the monorail assembly (or assemblies) is attached, and a scaffolding system suspended from the monorail assembly (or assemblies) form a monorail system (700). Each monorail system (700) is operably connected to a generator (720) to provide electrical power to the monorail system (700). The generator (720) provides electrical power to effect movement of the scaffolding system (700) along and vertically along the monorail assembly (or assemblies).

The monorail assembly (600) will not be described in further detail with reference to FIGS. 2 to 7f.

Monorail assembly

FIG. 2 illustrates a monorail assembly (600). In the illustrated embodiment, the monorail assembly (600) is secured beneath the structure of the work platform system (100). The monorail assembly (600) includes a joist bracket (605), a monorail beam (630), a monorail coupling bracket assembly (650), and end stops (680) (only one is illustrated).

Joist Bracket

Figures 3a-3c illustrate the joist bracket (605) in more detail. Each joist bracket (605) has two bracket plates (606). Each bracket plate (606) has a generally stepped configuration having a lower wall (607) that is generally perpendicular to a first intermediate wall (608), a second intermediate wall (609) that is generally perpendicular to the first intermediate wall (608), and an upper wall (610) that is generally perpendicular to the second intermediate wall (609). In the illustrated embodiment, the transition (611) between each of the walls (607, 608, 609, 610) is rounded; however, in additional embodiments, the transition may be sharp or more gradual. The lower wall (607) and the upper wall (610) each include a plurality of apertures (612, 614) that can receive bolts. As perhaps best illustrated in FIG. 3b, the opening (614) is a tunneled opening, i.e., the opening has a flange around its perimeter on one side. The plate (606) each includes a plurality of additional openings (613), each of which extends through at least a portion of the upper wall (610) and the first and second intermediate walls (608, 609). In the illustrated embodiment, each of the plurality of additional openings (613) is rectangular.

Referring to FIG. 3b, specifically, when securing a joist bracket (605) to a ladder frame member (30) of a ladder system (100), two bracket plates (606) are used. The bracket plates (606) are positioned on both sides of the frame member and secured together using a plurality of bolts (615) and nuts (616).

In the illustrated embodiment, the scaffold frame member (30) has a truss-like structure having an upper chord (32) and a lower chord (33), along with a plurality of diagonal support members (38). The point where the two diagonal support members (38) meet along the chords (32, 33) is a panel point (710). The joist brackets (605) are specifically designed to have a length that spans at least two panel points (710), each panel point (710) included between the plates (606) being aligned with an opening (613). The upper wall (610) of each bracket plate (606) sandwiches the diagonal support members (38) but does not press or apply force to the diagonal support members (38). The flange of the tunneled opening (614) prevents the bracket plates (606) from tightening against the diagonal support members (38). Rather, the second intermediate wall (609) rests on and is supported by the lower cord (33).

It will be appreciated that the exact dimensions and appearance of the bracket plate (606) and the joist bracket (605) may vary depending upon the scaffolding system in which the joist bracket (605) is to be used. In particular, the presence of panel points, the distance between panel points, and the shape of the cords can all affect the particular design of the joist bracket (605).

Monorail beam

Figures 4a and 4b illustrate an exemplary monorail beam (630). The monorail beam (630) is an I-beam having a central member (631) having a flange (632) that projects from the length of the central member (631) in a direction generally perpendicular to the central member (631). The ends of the monorail beam (630) include a series of openings (635) that are used to secure various additional components of the monorail assembly (600), as described in more detail below.

Joint Bracket Assembly

To join the monorail beams (630), a joining bracket assembly (650) is used. FIGS. 5A through 5E illustrate exemplary joining bracket assemblies (650) used in the present disclosure. In brief, the joining bracket assembly (650) engages at least two of the openings (635) in one end of the first monorail beam (630) and at least two openings (635) in an adjacent second monorail beam (630). The joining bracket assembly (650) also secures the monorail beam (630) to the joist bracket (605).

In the embodiments illustrated in FIGS. 5A through 5E, each coupling bracket assembly (650) includes a side plate (651), a spacer plate (657), and a safety plate clamp (658). As illustrated in FIG. 5C, the side plate (651) has two portions: a first portion (652) that contacts a lower surface of one of the flanges (632) of the monorail beam (630) and a second portion (653) that contacts the central member (631) of the monorail beam (630). The second portion (653) includes a plurality of first openings (not illustrated) and a plurality of second openings (642). When the side plate (651) is properly aligned with the monorail beam (630), the openings of the plurality of first openings are aligned coaxially with at least two openings (635) of the monorail beam (630). A bolt (661) held in place by a nut (661a) passes through the coaxial opening to secure the side plate (651) to the monorail beam (630). As shown in FIG. 7d, the openings of the plurality of second openings (642) are aligned with additional openings (635) on the monorail beam (630) and receive pins for further securing the monorail beams (630) to one another.

When properly positioned, the first portion (652) is flush with one of the flanges (632) of the monorail beam (630) with the spacer (654) having the same height relative to the flange (632) of the monorail beam (630). It will be appreciated that when the monorail beam (630) is connected to an adjacent monorail beam, the spacer (655) is also flush with the flange of the adjacent second monorail beam. The third spacer (656) is provided as a separate component on the side of the monorail beam (630) opposite the first portion (652).

As perhaps best illustrated in FIG. 5e, the spacers (654, 655, 656) extend the width of the first portion (652) and raise the height of the first portion (652). The spacer plate (657) and the safety plate clamp (658) are then clamped around the upper flange (632) of the monorail beam (630) to lock the coupling bracket assembly (650) in place on the monorail beam (630). The spacer plate (657) is a generally planar rectangular structure having an opening (663) through an end that is coaxial with at least one of the openings (660, 668) of the spacers (654) and (656), respectively, when positioned relative to the first portion (651).

Likewise, the safety plate clamp (658) is a generally planar rectangular structure having an opening (665) through the end and a flange extension (672). When positioned relative to the first portion (651), the opening (665) is coaxial with each of the openings (663) and at least one opening (660) of the spacer plate (657), spacer (654) and spacer (656), respectively. A bolt (670) extends through each of the coaxial openings (667, 663, 660) and is secured with a nut (662) to complete the joining bracket assembly (650).

It will be appreciated that the structure of the joining bracket assembly (650) creates a space between the upper portion of the flange (652) and the flange extension (672) of the safety plate clamp (658). As perhaps most clearly illustrated in FIG. 7c, the space accommodates the lower wall (607) of the joist bracket (605). When the joining bracket assembly (650) is positioned relative to the joist bracket (605), one of the openings (612) in the lower wall (607) will be coaxial with at least one opening (667) of the spacer (655). Bolts secured through the openings (612, 667) secure the monorail beam (630) to the joist bracket (605) and thereby to the scaffolding system (100).

End stop

Figures 6a-6c illustrate an end stop (680). The end stop (680) has a very similar construction to the joining bracket assembly (650) and in fact reuses many of the components. In the illustrated exemplary embodiment, the end stop (680) includes a side plate (681), a spacer plate (687), and a safety plate clamp (688) having substantially the same construction as the side plate (651), the spacer plate (657), and the safety plate clamp (658). The difference is that while the joining bracket assembly (650) is secured to a portion of the monorail beam (630), the end stop (680) itself includes a stop portion (690) that is essentially a portion of the monorail beam (630') having a terminal plate (691) to stop further movement of the structure along the monorail beam (630').

FIGS. 7A-7F illustrate assembly steps for an exemplary monorail assembly (600). As shown in FIGS. 7A and 7B, the scaffolding system (100) is in place with joist brackets (605a, 605b) positioned opposite each other on opposing framework components. The monorail beam (630) is lowered into place, for example, by a crane. Referring now to FIG. 7C, with the monorail beam (630) in place, bolts (670) are fastened to the monorail beam (630) to the joist brackets (605) and thereby to the scaffolding frame members (30), along with the lower wall (607) between the flange extensions (672) and the flange (632) of the monorail beam. The monorail beam (630) is connected to both the joist brackets (605a, 605b) in the same manner.

As illustrated in FIG. 7d, two adjacent monorail beams (630) are held in place relative to one another and secured using bolts (661), and pins (741) are inserted through a plurality of second openings (642) of the second portion (653) to further secure the adjacent monorail beams (630) to one another.

As shown in FIGS. 7e and 7f, once the final monorail beam (630) is in place, end stops (680) are secured to the ends of the final monorail beam (630) using the same method to secure adjacent monorail beams (630) to each other.

Ladder system/monorail assembly

Figures 8a-8c illustrate in more detail the connection between the scaffold system (100) and the monorail assembly (600). The joist brackets (605) are shown secured to the scaffold frame members (30) each spanning two panel points (710). The second intermediate wall (609) of the plate (606) rests on the lower chord (33) of the scaffold frame members (30). The individual monorail beams (630) are connected to one another using joining bracket assemblies (650).

From FIGS. 8A through 8C, it will be appreciated that adjacent monorail beams (630) are secured to each other by two coupling bracket assemblies (650) arranged in mirror image to each other. That is, for a given monorail beam joint, a first coupling bracket assembly (650) is positioned relative to the monorail beam (630) with its side plate (651) relative to a first side of the central member (631). A second coupling bracket assembly (650) is positioned relative to the monorail beam (630) with its side plate (651) relative to the other side of the central member (631). As a result, the side plates (651) share a common set of bolts (661) and pins (741).

Example ladder system

Suspended joint scaffolding system

In the embodiments illustrated herein, the monorail assembly (600) is shown secured to an exemplary scaffolding system including a scaffolding frame member (30) having upper and lower chords (32, 33). FIGS. 9 through 34c further illustrate an exemplary scaffolding system including such a scaffolding frame member that is a suspended articulated scaffolding system. However, it will be appreciated that in additional embodiments, the monorail assembly (600) may be secured to any type of scaffolding system, more preferably any type of suspended scaffolding system.

Interconnected structures

FIG. 9 illustrates an interconnecting structure (10) for a suspended joint scaffolding system. The interconnecting structure (10) is configured to allow articulation for both the interconnecting structure (10) and the scaffolding frame member (30) when attached to the scaffolding frame member (30) (see FIG. 13). The interconnecting structure is any structure that connects one or more joists or other elongated structural members, such as a node, hinge, pivot, post, column, center, shaft, spindle, and the like.

The interconnecting structure (10) includes an upper element (11) and a bottom element (12) spaced apart from the ends of the middle section (15). The upper element (11) and the bottom element (12) may be substantially planar in configuration and may also be parallel to one another. In the illustrated embodiment, the upper element (11) and the bottom element (12) are octagonal in plan. In other embodiments, the upper element (11) and the bottom element (12) may have other shapes, such as square, polygonal, circular, etc.

The intermediate section (15) may be a cylindrical section with the longitudinal axis of the intermediate section (15) being perpendicular to the planes of the upper element (11) and the bottom element (12). In the illustrated embodiment, the intermediate section (15) is a staff column. However, in alternative embodiments, the intermediate section (15) may have a different shape, such as any prism having polygonal faces. In FIG. 9, a lower portion of the intermediate section (15) is removed for clarity to show that the intermediate section (15) is hollow.

There are a plurality of openings (13, 14) extending through both the upper element (11) and the floor element (12), respectively. The plurality of openings (13) (e.g., 13A, 13B, 13C, 13D, 13E, 13F, 13G, 13H) are interspersed throughout the upper element (11) to provide a variety of locations for connection to one or more scaffolding frame members (30) (e.g., see FIG. 13). The plurality of openings (14) (e.g., 14A, 14B, 14C, 14D, 14E, 14F, 14G, 14H) are similarly spaced through the floor element (12) such that each opening (e.g., 13A and 14A) is coaxial.

The upper element (11) has a central opening (16) in the center. In an embodiment, the central opening (16) accommodates a suspension connector (80) (see, e.g., FIGS. 29-33). In another embodiment, the central opening (16) accommodates a vertical support member (75) (see, e.g., FIG. 29). The central opening (16) may be generally cruciform in configuration due to a central opening region (19) having four slots (17) extending therefrom (e.g., 17A, 17B, 17C, 17D). Intersecting and interconnecting each of the four slots (17A, 17B, 17C, 17D) is a series of intersecting slots (18A, 18B, 18C, 18D), the utility of which will become apparent as will be discussed below. For added strength, a second reinforcing plate (20) is added to the lower side of the upper element (11), the openings of the reinforcing plate (20) corresponding to the central opening (16) configuration and all auxiliary openings (17, 18, 19) therefor. A handle (22) is optionally added to the side of the middle section (15).

Figures 10, 11 and 12 illustrate plan, side and bottom views of the same embodiment of the interconnect structure (10) illustrated in Figure 2. Figure 5 particularly illustrates a bottom opening (23) on the bottom element (12). In an embodiment, the bottom opening (23) accommodates a vertical support member (see, e.g., Figure 29). A bottom surface of a reinforcing plate (20) is visible within the bottom opening (23). Attached to the inner surface of the reinforcing plate (20) and the middle section (15) are a plurality of gussets (25) that provide additional support for the interconnect structure (10).

Ladder frame absence

FIG. 13 illustrates a top perspective view of an interconnection between a single interconnecting structure (10) and a single scaffolding frame member (30), while FIGS. 14a and 14b illustrate an exploded and general perspective view, respectively, of typical connection details between an interconnecting structure (10) and a scaffolding frame member (30). When used in a suspended joint scaffolding system, the scaffolding frame member (30) is referred to as a joist (30).

The joist (30) includes an upper element (32) and a bottom element (33). Interspersed between the elements (32, 33) are a plurality of diagonal support members (38). Each element (32, 33) is made of two L-shaped angle steel pieces (39A, 39B). The elements (32, 33) may typically be identical in configuration except that the upper element (32) includes a connector hole (54A, 54B) in its midspan (see, e.g., FIGS. 16A, 16B). The joist (30) includes a first end (31A) and a second end (31B). An upper connecting flange (35) and a lower connecting flange (36) extend from both ends (31A, 31B) of the upper element (32) and the lower element (33). There is a connecting hole (37) passing through both the upper and lower connecting flanges (35, 36). Thus, there are four upper connecting flanges (35A, 35B, 35C, 35D); and there are four lower connecting flanges (36A, 36B, 36C, 36D). Thus, at the first end (31A) extending from the upper element (32), there is an upper connecting flange (35A) and a lower connecting flange (36A), and there is a connecting hole (37A) passing through them. Similarly, at the second end (31B) of the upper element (32), there are an upper connecting flange (35B) and a lower connecting flange (36B), and there is a connecting hole (37B) passing through them. Continuing, at the first end (31A) of the lower element (33), there are an upper connecting flange (35D) and a lower connecting flange (36D). There is a connecting hole (37D) passing through these connecting flanges (35D, 36D). The second end (31B) of the joist (30) extending from the lower element (33) has an upper connecting flange (35C) and a lower connecting flange (36C), and there is a connecting hole (37C) passing through them.

Inside each of the connector holes (37A, 37B, 37C, 37D) there is an additional locking hole (360A, 360B, 360C, 360D) also located in the connecting flange (35A, 35B, 35C, 35D).

As is more clearly illustrated in FIGS. 14A and 14B , the pin (40) may be positioned in any two corresponding upper and lower openings (13, 14) of the interconnecting structure (10) via the connecting holes (37). In this manner, the joist (30) may be connected to the interconnecting structure (10) in a virtually infinite number of ways and angles. For example, the pin (40) may be positioned via the upper connecting flange (35A); via the opening (13A); via the lower connecting flange (36A) (all first ends (31A) of the upper element (32)); via the upper connecting flange (35D); via the opening (14A); and then via the lower connecting flange (36D). In these scenarios, the pin (40) is additionally threaded through the connecting holes (37A and 37D). The pin (40) includes two roll pins (42) on its upper end. The lower of the two roll pins (42) acts as a stop to prevent the pin (40) from sliding completely through the joist (30) and interconnecting structure (10). The upper roll pin (42) acts as a finger hold to facilitate easy purchase and removal of the pin (40) from the joist (30) and interconnecting structure (10).

The design of these various components is such that free rotation of both the joist (30) and the interconnecting structure (10) is permitted while the joist (30) and the interconnecting structure (10) are connected together. The rotation arrow (R1) represents rotation of the joist (30) and the rotation arrow (R2) represents rotation of the interconnecting structure (10). This rotational capability of the joist (30) and the interconnecting structure (10) provides, in part, the joint functionality of the present invention.

Free rotation of the joists (30) and interconnecting structures (10) is permitted, but such free rotation is restricted once the sections or units of the modular space frame support system are assembled and ready for use. In an embodiment, the free rotation is restricted by at least one of i) an additional (second) pin positioned proximate the perimeter of at least one interconnecting structure; and ii) at least a portion of the working platform when the platform is positioned relative to the interconnecting structure and joists in an extended position.

In the particular embodiment shown, an optional second locking pin (40B) may be added through locking holes (360A, 360C, 360D) at the end of the joist (30) to lock the joist (30) to prevent joint function, if desired. The locking pin (40B) abuts a groove (24) of the interconnecting structure (10). The groove is located in both the upper element (11) and the bottom element (12). Similarly, the locking pin (40B) may include an additional two roll pins (42) as well as the pin (40).

While the joist (30) illustrated in the drawings is made of a particular shaped element, it should be apparent to those skilled in the art that there are other embodiments that provide aspects of the present invention. A joist is any elongated structural member configured to support or bear a load, such as a bar joist, a truss, a formed steel (i.e., an I-beam, a C-beam, etc.). For example, the joist (30) of the drawings may be generally referred to as a bar joist or an open web beam or joist. The joist (30) may also be made of formed steel (e.g., a wide flange element, a narrow flange element, etc.), or other suitable shapes and materials.

The assembly of interconnecting structures (10) and joists (30) to form sections or units (115) of a modular space frame support system (100) is discussed in more detail below.

FIG. 15 illustrates a single section or unit (115) of a modular space frame support system (100) constructed using interconnecting structures (10) and joists (30). Four interconnecting structures (10A, 10B, 10C, 10D) are interconnected by four joists (30A, 30B, 30C, 30D). FIG. 15 illustrates a single frame unit (115) having a square plan. It should be apparent to those skilled in the art that other shapes and configurations may be constructed. For example, other shapes may be constructed by varying the lengths of the joists (30). For example, a rectangular frame unit (115) may be constructed. Additionally, by attaching the joists (30) to various openings (13, 14) of the interconnecting structure (10), various angles at which the joists (30) are interconnected with the interconnecting structure (10) can be achieved. For example, a frame unit (115) that is triangular in plan (not shown) can be constructed. Accordingly, by varying the length of the joists (30) (e.g., see FIGS. 27a-27d) and/or varying the angle(s) at which the joists (30) extend from the interconnecting structure (10), virtually any shape and size of frame unit (115), and consequently the modular space frame support system (100) and work platform system (200), can be constructed. Additionally, since different shapes, sizes and configurations of the frame sections or units (115) can be joined and adjacent to one another, the modular space frame support system design and work platform system design can be virtually completely customized. This adaptability of the modular space frame support system (100) provides a convenient way to access virtually any type of work area required for construction.

FIGS. 16A, 16B and 16C illustrate various drawings and enlargements of an interconnection between an intermediate support deck joist (52) and a joist (30). The intermediate support deck joist (52) provides additional support to the support platform (50) (see, e.g., FIG. 17) and may span between two joists (30). At each end of the intermediate support deck joist (52) are pins (53) which communicate with corresponding holes (54) in the upper portion of the joist (30). For example, FIG. 16B illustrates an exploded view of the interconnection where the pins (53) enter holes (54A). In this manner, movement (both lateral and axial) of the intermediate support deck joist (52) is minimized.

FIG. 17 illustrates an embodiment of a single frame section or unit (115) of FIG. 15, wherein a platform (50A) is disposed on the single frame unit (115) to transform the single frame unit (115) into a single unit of a work platform system (200). The platform (50A) is, in this embodiment, disposed on an intermediate support deck joist (52A) and joists (30A, 30B, 30D). The edge of the platform (50A) may be disposed on top of the intermediate support deck joist (52) and the angle pieces (39A, 39B) may be disposed on top of the applicable joists (30A, 30B, 30D). The configuration of the upper portion of the intermediate support deck joist (52) and the angle pieces (39A, 39B) is configured such that vertical and horizontal movement of the platform (50A) is avoided. The work platform (50) may typically be a 4" x 8' piece of material. The work platform (50A) may comprise, for example, a wood panel (51A). A suitable work platform (50) may be made of metal (e.g., steel, aluminum, etc.), wood, plastic, composite, or any other suitable material. Similarly, the work platform (50) may be made of a solid, corrugated, lattice-shaped, smooth, or other suitable configuration. For example, the work platform (50) may be a wood sheet, plywood, roof deck material, metal on a frame, lattice, steel sheet, or the like. Thus, after placing a first work platform (50A) on a unit (115) of a modular space frame support system (100), the installer may continue in this manner to place additional multiple work platforms (50A, 50B) such that the entire upper frame (110) and/or lower frame (120) is formed of a wood platform (51A, 51B), as illustrated in FIG. 51B) is covered to create a complete working platform system (200).

FIGS. 19A, 19B, and 19C illustrate various enlarged views of additional optional features that may be used with the modular space frame support system (100) to form a work platform system (200). A deck retainer plate (60) may be positioned across the gaps between multiple work platforms (50). The deck retainer plate (60) may include a plurality of holes (62) such that a plurality of deck retainer bolts (61) may attach the deck retainer plate (60) to the joist (30). The deck retainer plate (60) is one method of securing the work platform (50) to the modular space frame support system (100).

As illustrated in FIGS. 20 and 21, there is virtually no limitation as to the size and shape of the modular space frame support system (100) and work platform system (200) that may be made in accordance with the present disclosure. FIGS. 20 and 21 illustrate top and bottom perspective views, respectively, of one large rectangular embodiment of a single level modular space frame support system (100) having a work platform (50) in place to make the work platform system (200).

As noted above, one drawback of many existing work platforms is that they are not field installable and cannot be relocated, expanded, or removed while portions of the work platform are already installed. The present disclosure overcomes this drawback. That is, the modular space frame support system and resulting work platform system allows the worker or workers to add additional sections of the modular space frame support system (100) (and ultimately the work platform system (200)) while the worker(s) are physically present in the existing installed portion or unit of the modular space frame support system and/or work platform system. That is, the worker(s) can extend, relocate, or remove portions of the work platform system (200) and/or the modular space frame support system (100) using only manual tools. No mechanical tools, hoists, cranes, or other equipment are required to add, remove, or relocate the modular space frame support system (100). This advantage therefore saves labor, time, and equipment.

Figures 22 through 26 illustrate the progressive articulation of just one section or unit (115) of a modular space frame support system (100) when constructed using interconnecting structures (10) and joists (30). This can be readily accomplished by one or two workers by simply sequentially placing additional joists (30D) from an existing interconnecting structure (10A). The "new" interconnecting structure (10D) is then connected to the first joist (30D). A second additional joist (30E) is connected to the interconnecting structure (30D). Additionally, another interconnecting structure (10E) and joist (30F) are connected such that the final joist (30F) is again connected to the existing interconnecting structure (10B). In this manner, the worker(s) can remove an existing section of the modular space frame support system (e.g., comprising, among others, the hubs (10Q, 10B, 10C) and the joists (30A, 30B)) and install a new section or unit of the modular space frame support system (e.g., comprising, among others, the "new" interconnecting structures (10D, 10E) and the "new" joists (30D, 30E, 30F)). The worker(s) can newly install or reposition sections or units of the modular space frame support system (100) while the worker(s) remains on the existing section of the work platform (50). That is, no additional lifting equipment, machinery is required to install, reposition or remove additional units or sections of the modular space frame support system when constructed using the interconnecting structures (10) and the joists (30).

Additionally, the installer(s) may not need to extend beyond the existing installed frame unit (115), or may only need to extend just beyond the installed frame unit (115). For example, as illustrated in FIG. 22, the installer(s) may be on an existing work platform (50A, 50B, 50C, 50D) when relocating or installing the next section(s) of the modular space frame support system (100).

FIGS. 23-25 clearly illustrate, via motion arrows ("M"), that a new section or unit (115) of the modular space frame support system (100) can be moved and rotated into its final required position by the combination of the new joists (30D, 30E, 30F) and the new interconnecting structures (10D, 10E). That is, the units of the modular space frame support system (100) are connected in place. Additionally, the joints can be initiated and stopped (and even reversed) by the installer(s) while the installer(s) remain on the existing framing device and/or work platform system. Although not shown, additional auxiliary devices may be used to assist the joints (e.g., motors, hand tools, machine tools, hydraulics, etc.).

FIG. 26 illustrates a new section or unit (115) of the modular space frame support system (100) articulated in place prior to installation of the support platform(s) (50) and any other components as discussed herein. Removal of a portion of the modular space frame support system (100) can be accomplished essentially by reversing the steps previously described.

Although the individual sections or units (115) of the modular space frame support system (100) (and ultimately the work platform support system (200)) described with reference to FIGS. 15-26 are rectangular, i.e., each individual section or unit (115) is made of four interconnecting structures (10) and four joists (30) as noted above, in some embodiments, the individual units (115) of the modular space frame support system (100) may take on different geometries and shapes. For example, FIGS. 27A, 27B, 27C, and 27D illustrate various embodiments of joist (30) and interconnecting structure (10) configurations. For example, FIG. 27D illustrates a "standard" length joist (30A) (e.g., 8 feet nominal length) having two interconnecting structures (10A, 10B). These "standard" length joists (30A) may be designated as "6/6 units". FIG. 27c illustrates two joists (30A, 30B) of equal length connected to interconnecting structures (10A, 10B, 10C). The joists (30A, 30B) whose length in FIG. 27c (the length of each joist (30A) in FIG. 20d) is 1/2 may be designated as "3/6 units" in that they are half the length of the "6/6 units" referred to above. Similarly, two unequal length joists (30A, 30B) are shown in FIG. 27b and may be designated as "2/6 units" and "4/6 units", respectively. This is because a "4/6 unit" is approximately 2/3 the length of a "6/6 unit", just as a "2/6 unit" is approximately 1/3 the length of a "standard" "6/6 unit" joist, as illustrated in FIG. 27d. The same system is illustrated in FIG. 27a, where the first joist (30A) is designated a "1/6 unit" and the second joist (30B) is designated a "5/6 unit." As noted above, by using joists (30) of different lengths and extending the joists (30) from the interconnecting structure (10) at different angles, an almost infinite variety of configurations and footprints of the modular space frame support system (100) and resulting work platform system (200) can be achieved. For example, this diversity allows the installer to configure the modular space frame support system (100) and work platform system (200) around a variety of obstacles (e.g., columns, piers, abutments, etc.) and structures. This diversity allows the installer to create a variety of geometries for the work platform system that go beyond a rectangle.

With reference to the teachings of the present specification, including at least FIGS. 14a, 17 and 22-26, it will be apparent that at least one of the joists must be connected to at least one of the interconnecting structures using a pin to provide free rotation of the at least one joist about the at least one interconnecting structure around the pin. Furthermore, it will be apparent that the free rotation is limited by at least one of i) an additional pin positioned proximate the perimeter of the at least one interconnecting structure; and ii) at least a portion of the working platform when the platform is positioned relative to the interconnecting structure and the joists in a final position.

FIGS. 28A and 28B illustrate plan views of just two embodiments of the present invention. It will be appreciated that the work platform support system (100) is capable of a variety of horizontal alignments. For example, FIG. 28A illustrates an eight foot long joist (30) interconnected with a plurality of hubs (10). The spacing between the pins (40) and the hubs (10) provides some flexibility to the system (100) so that the system (100) can be bent or "racked" in the horizontal direction. This can allow the system (100) to be installed around a structure. FIG. 28B illustrates an angled system (100). For example, the joist (30C) connected to the hub (10C) can be shorter than the joist (30B) connected to the hub (10B). The joist (30B) is in turn shorter than the joist (30A) connected to the hub (10A). The joist (30B) is, in turn, shorter than the joist (30A) connected to the hub (10A). In this manner, by using joists (30A, 30B, 30C) of different lengths and/or changing the angle at which the joist (30) is connected to the hub (10), the angled system (100) can be configured as in FIG. 28B. Similarly, this allows the system (100) to be installed around various obstacles, structures, etc., for example.

FIG. 29 illustrates an elevation view of one embodiment in which the support system (100) and the work platform system (120) are attached to the structure (90) via suspension connectors (80). In this embodiment, the structure (90) is a bridge (90). On the lower side of the bridge (90) are a plurality of beams (92). A series of suspension connectors (80), which are high strength chains in this embodiment, are attached to the various beams (92) via structural attachment devices (82), in this embodiment via standard beam clamps. Around the perimeter of the work platform system (120) are a plurality of railing standards (85), creating a railing system around the work platform system (120). The plurality of chains (80) are attached to various hubs (10) of the support system (100) to provide a structural connection to the bridge (90). In this manner, the work platform system (120) and the support system (100) can be fully suspended from a suitable structure (90). Note that each hub (10) does not necessarily require a suspension connector (80) to be connected to the structure (90). For example, there is no suspension connector (80) connecting the hub (10X) to the beam (92X). This may be because the hub (10A) is not aligned under the beam (92X) or other suitable suspension point, making it impossible or undesirable to use a chain (80) at that location.

The suspension connector (80) can be any suitable support mechanism capable of supporting the work platform system (120) and any auxiliary dead loads thereof, plus any intended live loads placed upon the work platform system (120). In practice, the work platform system (120) can support at least four times its own weight plus the intended live load placed upon the work platform system (120). Similarly, the suspension connector (80) is also suitable to support at least four times its own weight plus the intended live load placed upon it. The suspension connector (80) can be a high strength chain, cable, or the like. For example, one suitable suspension connector (80) is ⅜″, grade 100, heat treated alloy chain.

The suspension connector (80) is attached to a beam clamp (82) that is additionally attached to a plurality of elements (92) on the lower side of the structure (90). The structure (90) may be a bridge, an overpass, a ceiling structure of a building, etc. Similarly, the elements (92) to which the suspension connector (80) is attached may be beams, joists, or any other suitable structural elements of the structure (90). Instead of the beam clamp (82), other suitable structural attachment devices (82) may be used.

FIGS. 30A, 30B, 31A, and 31B all illustrate various views of an interconnection between a suspension connector (80) (e.g., a chain, cable, etc.) and a hub (10). In the illustrated embodiment, a free end of the chain (80) (i.e., a distal end from the structure (90)) is positioned through a central opening area (19) of an upper element (11) of the hub (10). The chain (80) is then slid into one of the four slots (17) (e.g., 17A). Once the chain (80) is positioned within a slot (17A), a chain retainer pin (200) is positioned in an adjacent transverse slot (18A) such that the chain (80) is retained at the distal end of the slot (17A). The chain (80) and slot (17A) are sized so that when the retaining pin (200) is properly positioned in the transverse slot (18A), the chain (80) is effectively locked to the hub (10) and does not slip vertically or horizontally from its position in FIG. 17A. This locking system effectively secures the hub (10) to the chain (80). As an additional safety check, a zip tie (201) may be placed between the hole (202) in the chain retainer pin (200) and an adjacent link of the chain (80). This provides an additional visual aid to the installer to verify that the chain retainer pin (200) has been installed.

An alternative device for connecting the suspension connector (80) to the work platform support system (100) is an auxiliary suspender mounting bracket (300). The auxiliary mounting bracket (300) is typically used when a particular hub (10) is not accessible for connection with the suspension connector (80). As illustrated in various FIGS. 32a, 32b, 32c and 32d, one embodiment of the auxiliary suspender mounting bracket (300) includes two opposing and parallel flanges (303). Spanning the flanges (303) are an interconnecting tube (304) and a base plate (302). There are a plurality of mounting holes (305) passing through the base plate (302). The auxiliary suspender mounting bracket (300) may be used in place of or in addition to a suspension point hub (10). The bracket (300) allows the suspension connector (80) to be connected to the system (100) at a location other than the hub (10).

For example, FIG. 33 illustrates a typical scenario that may be encountered when installing a work platform system (120). FIG. 33 is not drawn to scale. One or more obstructions (95A) may be located on the underside of the structure (90) or between the structure (90) and the work platform system (120). These obstructions (95A) may be man-made or natural. For example, the obstructions (95A) may be concrete beams, box beams, improperly sized frameworks, ducts, lights, finished surfaces, etc. The obstructions (95A) may render a particular hub (10B) impractical or unavailable as a connection point for the system (120) to the suspension connector (80). In such cases, one or more auxiliary suspender mounting brackets (300) may be attached to the joist (30). A high strength bolt (not shown) can be passed through the mounting hole (305) and then through the hole in the upper element (32) and connected to a bolt underneath the upper element (32). (See plate (60) connection in FIG. 19b for similar connection details). A suspension connector (80) (e.g., a chain) can be connected to a beam (92) on the lower side of the structure (90) via a beam clamp (82).

As illustrated in FIG. 33, the obstacle (95B) is vertically directly above the hub (10B), making the hub (10B) unsuitable for a suspension point. Accordingly, the bracket (300) can be attached to the joist (30) adjacent the hub (10B), thereby allowing the suspension connector (80) to obtain proper attachment to the nearby beam (92). The angle (Φ) between the suspension connector (80), indicated by V, and the vertical causes the suspension connector (80) to be non-vertical or slightly deviated from vertical.

FIGS. 34A, 34B, and 34C illustrate elevation views of various embodiments where the vertical flexibility of the present invention is apparent. For example, FIG. 34A illustrates a portion of a work platform system (120) suspended from a non-flat lower side of a structure (90) (e.g., an arched bridge). The suspension connector (80) and other connection details are not shown for convenience of illustration. The design provides flexibility in the interconnection between the hub (10) and the joist (30). This flexibility allows for some bending in the vertical direction (e.g., see FIG. 34A). This allows, for example, the system (120) to parallel or "mirror" the lower side of the curved arched bridge.

Alternatively, where the curvature of the support structure (90) is much greater, a configuration such as that illustrated in FIG. 34b may be installed, i.e., the multiple portions of the system (120) are not coplanar but stepped or hierarchical. If desired, multiple suspension connectors (80) may be installed at such lengths that multiple hubs (10A, 10B) may be installed on the same suspension connector (80). As discussed above, the suspension connector (80) may be connected to the slot (17) of the upper hub (10A), then passed through the bottom opening (23) of the upper hub (10A), and then connected to the slot (17) of the lower hub (10B) (e.g., see FIGS. 30a, 30b).

FIG. 34c illustrates another configuration of the present invention capable of installing the system (120) in a multi-level configuration. For example, where work may be required on a vertical structure (99) (e.g., a pier), at least two systems (120A, 120B) may be installed. Similar to the connection scenario used in FIG. 34b (above), the suspension connector (80) may also be of a length suitable to pass from the hub (10A) of the upper system (120) to the hub (10B) of the lower system (120) and connect thereto. In this manner, a multi-level system (120) may be installed vertically.

Suspension ladder

In the embodiments illustrated herein, an additional scaffolding system (800) is illustrated that is used as a monorail vehicle movably attached to the monorail assembly (600), wherein the additional scaffolding system is a suspended scaffolding system. FIG. 35 illustrates an exemplary suspended scaffolding system. However, it will be appreciated that in additional embodiments, the monorail vehicle (800) may be constructed of any form of scaffolding system, preferably any form of suspended scaffolding system including a suspended articulated scaffolding system as described above. Furthermore, the terms "additional scaffolding system," "second scaffolding system," and "monorail vehicle" may be used interchangeably herein.

In the embodiment illustrated in FIG. 35, a suspended scaffold system (800) has a platform (810) formed by a frame (815) supporting a floor (820). A series of braced railing members at least partially surround the platform.

Additional Components

A scaffolding system (100, 800) used with the monorail assembly of the present disclosure may include additional components.

For example, in some embodiments, handrails, toe plates, tarps, sheets, gates, ladders, doors/gateways, wheels, bumpers and other accessories may be used in combination with any of the scaffolding systems disclosed herein.

Monorail system

Referring again to FIGS. 1A and 1B, as well as FIGS. 36-46, multiple embodiments of a monorail system (700) are illustrated. Each monorail system (700) includes a first scaffolding system (100), a monorail assembly (600) connected to the first scaffolding system (100), and a monorail vehicle (800) made of a second scaffolding system. Specifically, in the embodiments illustrated in FIGS. 1A, 1B and FIGS. 36-46, there are three monorail systems (700). The first monorail system (700a) includes a single monorail assembly (600a) connected to the scaffolding system (100a) with a single monorail vehicle (800a) positioned external to the structure (90). The second monorail system (700b) is positioned opposite the structure (90) and includes a single monorail assembly (600b) connected to the scaffolding system (100b) together with a single monorail vehicle (800b) positioned outside the structure (90). The third monorail system (700c) includes two monorail assemblies (600c, 600d) each connected to the scaffolding system (100a, 100b), the single monorail vehicle (800c) extending below the structure (90) with a first end of the monorail vehicle (800c) operably coupled to the first monorail assembly (600c) and a second end of the monorail vehicle (800c) operably coupled to the second monorail assembly (600d).

A generator (720) located on the structure (90) or separate from the monorail system (700) provides power to the monorail vehicles (800) to cause their movement along and vertically along each monorail(s).

The monorail systems (700a, 700b, 700c) will now be described in more detail.

Figure 36 is a detailed drawing of the callout (7) of Figure 1a and also illustrates the connection of the monorail beam (630) to each other and to the step system (100).

FIG. 37 is a cross-sectional view taken from line A-A of FIG. 1a and illustrates a third monorail system (700c). In the illustrated embodiment, two scaffolding systems (100a, 100b) are provided. Each scaffolding system (100a, 100b) is illustrated as a suspended joint scaffolding system as described above and is made of a plurality of interconnecting structures (10) and joists (30). The scaffolding systems (100a, 100b) are connected to the structure from above so as to be suspended from the structure (90) and on the side closest to the structure (90).

FIG. 39 is a detailed view of the callout (2) of FIG. 37 and illustrates the connection of the scaffolding system (100) to the structure (90) above. Specifically, a concrete anchor (830), such as a threaded rod, is inserted into the lower side of the structure (90). A swivel suspension point, such as that described in the co-pending application [to be filed prior to application], accommodates a chain (835) that is connected to the interconnecting structure (10) or other portion of the scaffolding system (100) as described in detail above with respect to FIGS. 29 to 32d. FIG. 40 is a detailed view of the callout (3) of FIG. 37 and illustrates such an exemplary connection.

FIGS. 41 and 42 illustrate exemplary connections between scaffolding systems (100a, 100b) to the sides of a structure (90). As illustrated in FIG. 41, an adjustable tube (872) having a foot (873) at its end can be used to push against the structure (90) and prevent movement of the scaffolding system (100) toward the structure (90), depending on the expected wind direction, if any. The adjustable tube (872) is secured to an interconnecting structure (10) of the scaffolding system (100). As illustrated in FIG. 42, to prevent movement of the scaffolding system (100) away from the structure (90), a chain (876) can be connected to the interconnecting structure (10) and wrapped around a portion of the structure (90), such as a column or post.

A monorail vehicle (800) spans the width of the lower side of the structure (90) to allow access to the lower surface (91c). In the illustrated embodiment, the monorail vehicle (800) is constructed as a suspended scaffold as described above. At each end of the monorail vehicle (800), there is a hoist motor (801) for moving the monorail vehicle (800) vertically, i.e., up and down, relative to the structure.

FIG. 46 is a cross-sectional view taken from C-C of FIG. 44 and illustrates in more detail the mechanism that allows movement of the monorail vehicle (800c) along and vertically along the monorail beam (630).

Structures and devices used to move a scaffold along a rail and to control and power its movement are well known in the art. Typically, such structures and/or devices include a plurality of wheels that engage a lower flange (632) of a monorail beam (630). Movement of the structures and/or devices along the monorail beam (630) is controlled and operated using power from one or more generators (720). In particular, as illustrated in FIGS. 44 and 45, two trolley structures (727, 728) are provided for each monorail assembly. One of the trolley structures (728) is passive and facilitates movement along the monorail beam (630). The other of the trolley structures (727) is active, i.e., powered, and connected to a control means to facilitate movement of a monorail vehicle (800c) along the monorail beam (630).

It will be appreciated that when allowing both vertical movement and movement along the monorail beam, the operator of the monorail vehicle (800) has access to substantially the entire lower surface (91c) of the structure (90).

FIG. 38 is a cross-sectional view taken from B-B of FIG. 1a illustrating first and second monorail systems (700a, 700b). The first and second monorail systems (700a, 700b) also utilize two scaffolding systems (100a, 100b). In contrast to the embodiment illustrated in FIG. 37, the embodiment illustrated in FIG. 38 illustrates additional means for providing stability of the scaffolding systems (100a, 100b) to the structure (90). The callouts illustrated in FIGS. 41 and 42 illustrate additional means for securing the scaffolding system (100) to the structure (90) in terms of lateral forces. FIG. 43 is a detailed view of the callout (6) of FIG. 38 illustrating stabilizing means for taking into account vertical forces, such as updrafts. As illustrated in FIG. 43, a third scaffolding system (e.g., a standard scaffolding system) is erected on the scaffolding system (100) and extends between the scaffolding system (100) and the bottom of the structure (90) to prevent upward movement of the scaffolding system (100).

Each monorail system (700a, 700b) includes a monorail vehicle (800a, 800b). While the embodiment illustrated in FIG. 37 includes a single monorail vehicle (800c) connected to two monorail assemblies, the monorail vehicles (800a, 800b) illustrated in FIG. 38 are each connected to only a single monorail assembly at two points. Like the monorail vehicle (800c), the monorail vehicles (800a, 800b) are constructed of suspended scaffolding as described above. At each end of the monorail vehicle (800a, 800b) are hoist motors (801) for effecting movement of each monorail vehicle (800a, 800b) in the vertical direction, i.e., up and down with respect to the structure.

FIGS. 44 and 45 illustrate exemplary monorail vehicles, such as 800a and 800b. Referring to FIGS. 44 and 45, for simplicity of explanation, reference will be made to a monorail vehicle (800a), and the same explanation will apply to a monorail vehicle (800b).

Structures and devices used to move a scaffold along a rail and to control and power its movement are well known in the art. Typically, such structures and/or devices comprise a plurality of wheels that engage a lower flange (632) of a monorail beam (630). Movement of the structures and/or devices along the monorail beam (630) is controlled and operated using power from one or more generators (720). As particularly illustrated in FIGS. 44 and 45, two trolley structures (727, 728) are provided. One of the trolley structures (728) is passive and facilitates movement along the monorail beam (630). The other of the trolley structures (727) is active, i.e., is connected to a control means and has power to facilitate movement of a monorail vehicle (800a) along the monorail beam (630).

When allowing both vertical movement and movement along the monorail beam, it will be appreciated that the operator of the monorail vehicle (800a, 800b) has access to substantially the entire side surface (91a, 91b) of the structure (90).

FIG. 47 is a cross-sectional view taken from D-D of FIG. 1a illustrating an exemplary cable configuration for obtaining power from the generator(s) to the hoist motor and power trolley.

How to access the surface

When accessing surfaces using the monorail system described herein, previously inaccessible (or not easily accessible) surfaces can be accessed without having to assemble scaffolding of numerous levels and lengths.

Typically, a first scaffolding system is fabricated and suspended from a structure to be accessed. A monorail assembly is attached to the first scaffolding system as needed to allow access to the structure. A monorail vehicle is then fabricated from a second scaffolding system and suspended from the monorail assembly using at least one power trolley to allow lateral movement of the monorail vehicle parallel to the monorail beam. The monorail vehicle also includes at least one hoist to allow vertical movement of the monorail vehicle.

In an embodiment, the first scaffolding system is a suspended joint scaffolding system. When utilizing a suspended joint scaffolding system as disclosed herein, it is possible to assemble the first scaffolding system in mid-air on an existing structure as described in detail with reference to FIGS. 22-26. The first scaffolding system is also secured and suspended from the structure as further described with reference to FIGS. 29-33 and 39-42.

Once the first scaffolding system is assembled and secured, the monorail assembly or assemblies are attached to the first scaffolding system. First, the location of the monorail beam must be determined in order to position the joist brackets in the appropriate locations. The joist brackets are then secured to the first scaffolding system, and particularly to the joists of the first scaffolding system as described with reference to FIGS. 3a to 3c, where the first scaffolding system is a suspended articulated scaffolding system. The monorail beam (with the engaging bracket assemblies fitted) is secured to each other and to the first scaffolding system using the engaging bracket assemblies and the joist brackets as described with reference to FIGS. 7a to 7f. End stops are placed at each end of the monorail assembly as described with reference to FIGS. 6a to 7f.

The monorail vehicle is assembled using a second scaffolding system, such as, for example, a suspended scaffolding system as described herein. The monorail vehicle is suspended from the monorail beam using at least one powered trolley, preferably at least one powered trolley and one manual trolley.

In some embodiments, it may be desirable to use two monorail assemblies on a single monorail vehicle, as illustrated with reference to FIG. 37. In that case, the two first scaffolding systems are assembled at a distance from each other by a plurality of scaffolding frame members or joists in each system that are parallel to each other. If one of the scaffolding frame members or joists of the first scaffolding system is not parallel to the other of the scaffolding frame members or joists of the second scaffolding system, it may be difficult, if not impossible, to create two parallel monorail assemblies.

The monorail vehicle is assembled as described above and secured to both the first scaffolding systems using at least one powered trolley and at least one manual trolley, each with its own first scaffolding system.

Accordingly, the present disclosure is not limited to the embodiments and examples contained herein, but is specifically intended to cover modified forms of these embodiments, including combinations of elements of different embodiments and parts of the embodiments, which fall within the scope of the following claims.

Claims (20)

As a monorail assembly,
A scaffold frame member comprising an upper chord, a lower chord, a plurality of supporting members extending between the upper chord and the lower chord, and a plurality of panel points where two of the plurality of supporting members meet along either the upper chord or the lower chord;
A joist bracket configured to be coupled to a ladder frame member and configured to span at least one of a plurality of panel points;
A joint bracket assembly coupled to the joist bracket; and
A monorail beam coupled to a joint bracket assembly, wherein the joist bracket and joint bracket assembly are configured to secure the monorail beam to a scaffolding frame member, comprising a monorail beam;
Monorail assembly. In paragraph 1,
Joist brackets:
A first bracket plate and a second bracket plate are included, wherein the first bracket plate is configured to be arranged on a first side of the ladder frame member, and the second bracket plate is configured to be arranged on a second side of the ladder frame member, wherein each bracket plate:
lower wall;
A first intermediate wall extending from the lower wall and being vertical;
a second intermediate wall extending from and perpendicular to the first intermediate wall; and
comprising an upper wall extending from the second intermediate wall and being vertical;
Monorail assembly. In the second paragraph,
The joist bracket includes a plurality of openings extending through at least a portion of the upper wall, the first intermediate wall, and the second intermediate wall.
Monorail assembly. In the second paragraph,
The upper wall includes a plurality of openings, the plurality of openings including a plurality of flanges on one side of the upper wall facing the step frame member.
Monorail assembly. In paragraph 4,
The upper wall of the first bracket plate and the upper wall of the second bracket plate are separated from the plurality of supporting members of the ladder frame member by a plurality of flanges.
Monorail assembly. In paragraph 1,
The monorail beam includes a central member and a flange,
The joining bracket assembly:
Side plates coupled to the monorail beam;
A spacer plate positioned between a portion of the side plate and the monorail beam; and
A safety plate clamp coupled to a spacer plate, wherein the spacer plate and the safety plate clamp are configured to clamp around a flange of the monorail beam.
Monorail assembly. In paragraph 6,
The side plates are:
a first portion configured to contact the lower surface of the flange of the monorail beam; and
comprising a second portion configured to contact the central member of the monorail beam;
Monorail assembly. In paragraph 7,
The joining bracket assembly is:
Further comprising a spacer disposed between the first portion of the side plate and the flange of the monorail beam;
Monorail assembly. In paragraph 1,
The joist bracket is configured to span at least two of the plurality of panel points.
Monorail assembly. As a joist bracket,
A first bracket plate and a second bracket plate, each bracket plate comprising:
lower wall;
A first intermediate wall extending from the lower wall and being vertical;
a second intermediate wall extending from and perpendicular to the first intermediate wall; and
comprising an upper wall extending from the second intermediate wall and being vertical;
The first bracket plate is configured to be secured to the second bracket plate by bolts;
Joist bracket. In Article 10,
Further comprising a plurality of openings extending through at least a portion of the upper wall, the first intermediate wall and the second intermediate wall;
Joist bracket. In Article 10,
At least one of the lower wall or the upper wall comprises a plurality of openings,
The plurality of openings include a flange on at least one side of the lower wall or the upper wall,
Joist bracket. In Article 10,
The first bracket plate is configured to be placed on the first side of the ladder frame member,
The second bracket plate is configured to be placed on the second side of the step frame member;
Joist bracket. In Article 13,
The step frame members are:
upper code;
sub code;
a plurality of diagonal members extending between the upper code and the lower code; and
Including a plurality of panel points where two of the plurality of diagonal members meet along the upper or lower code,
The joist bracket is configured to span at least two of the plurality of panel points.
Joist bracket. In Article 14,
A plurality of diagonal members of the ladder frame member are arranged between the upper wall of the first bracket plate and the upper wall of the second bracket plate.
Joist bracket. In Article 15,
The upper wall of the first bracket plate and the upper wall of the second bracket plate include a plurality of openings,
The plurality of openings include flanges that prevent the first bracket plate and the second bracket plate from contacting the plurality of diagonal members.
Joist bracket. As a joining bracket assembly,
A side plate configured to be coupled to a monorail beam;
A spacer plate configured to be placed between a portion of the side plate and the monorail beam; and
A safety plate clamp configured to be coupled to a spacer plate, wherein the spacer plate and the safety plate clamp are configured to be clamped around a flange of the monorail beam.
Joint bracket assembly. In Article 17,
The side plates are:
a first portion configured to contact the lower surface of the flange of the monorail beam; and
comprising a second portion configured to contact the central member of the monorail beam;
Joint bracket assembly. In Article 18,
Further comprising a spacer configured to be positioned between the first portion of the side plate and the flange of the monorail beam;
Joint bracket assembly. In Article 19,
The spacer plate comprises a first opening,
The spacer comprises a second opening,
The first part of the side plate includes a third opening,
The first opening, the second opening and the third opening are each formed coaxially to receive bolts to secure the coupling bracket assembly to the monorail beam.
Joint bracket assembly.