Modular ramp assembly

Abstract

A modular ramp assembly is disclosed comprising a pair of wedge-shaped ramps and a span connected between the ramps by releasable articulating joints, thereby defining a void beneath the span. Each ramp may rest directly on a floor surface or be supported in a raised position by a ramp raiser. The ramp raiser has a lower bearing face for supporting on the floor, an upper bearing face for receiving a ramp, and an outer angled face that aligns with the ramp to form a continuous surface. The assembly can be configured with one or both ramps elevated, secured to the floor by anchors, or connected side-by-side with another assembly using U-shaped connecting pins.

Description

Modular Ramp AssemblyField of the Invention

[0001] The present invention relates generally to modular ramp systems. In particular, it concerns ramps that can be assembled in different configurations to provide a continuous pathway over obstacles, and which may be elevated by the use of raiser components.Background of the Invention

[0002] On building sites and in other work environments, it is common for access between adjacent areas to be interrupted by obstructions such as sliding door tracks, step edges, thresholds, conduits, or similar structural features. These obstructions can present hazards to workers on foot, and may also impede the movement of equipment such as wheelbarrows, trolleys, and carts.

[0003] Temporary ramp structures are often employed to provide a pathway over such obstacles. Conventional arrangements may include simple boards or inclined surfaces placed over the obstruction. While such solutions can provide limited accessibility, they are frequently unstable, difficult to adapt to varying site conditions, and prone to displacement during repeated use. They may also lack the capacity to withstand substantial loads or to remain secure under the dynamic forces exerted by wheeled equipment.

[0004] In some circumstances, modular ramp systems have been developed to facilitate easier handling and deployment. These may be constructed from lightweight materials and designed to be disassembled for transport. While offering improvements over improvised solutions, known ramp systems may still suffer from limitations in their adaptability, particularly when floor levels differ between sides of an obstacle or when stability against displacement is critical.

[0005] The present invention has been devised in light of these practical challenges.

[0006] It is to be understood that, if any prior art information is referred to herein, such reference does not constitute an admission that the information forms part of the common general knowledge in the art, in Australia or any other country.Summary of the Disclosure

[0007] According to one aspect, there is provided a modular ramp assembly comprising a pair of ramps, each wedge-shaped and defining a lower bearing face and an upper angled ramp face inclined upwardly from an outer edge.

[0008] A span is connected between inner sides of the ramps by respective releasable articulating joints, thereby defining a void between the inner sides of the ramps beneath the span.

[0009] A ramp raiser is provided, defining a secondary lower bearing face for supporting on a floor surface, an outer angled ramp face inclined upwardly from a secondary outer edge, and an inner upper bearing face extending generally parallel to the secondary lower bearing face.

[0010] Each ramp is configurable in a lowered position in which the lower bearing face bears directly on the floor surface, and a raised position in which the lower bearing face bears on the inner upper bearing face of the ramp raiser with the secondary lower bearing face bearing on the floor surface.

[0011] In the raised position, the upper angled ramp face of the ramp and the outer angled ramp face of the ramp raiser are generally contiguous to form a continuous ramp surface.

[0012] The configuration in which each ramp may be used in either a lowered position or a raised position provides for dependable support in both cases. In the lowered position, the ramp bears directly on the floor surface so that the loads are transferred straight to the ground without reliance on auxiliary parts. In the raised position, the ramp bears on a flat support face of the ramp raiser, while the ramp raiser itself rests directly on the floor surface. This flat-to-flat contact ensures that the structure can accommodate significant loads without rocking or localised stresses.

[0013] The alignment of the inclined face of the ramp with the corresponding inclined face of the ramp raiser produces a continuous surface from the floor up to the span. This continuity avoids discontinuities or steps at the junction, so that wheeled equipment such as trolleys or wheelbarrows can move across smoothly without hindrance. The use of a relatively narrow leading edge at the base of the ramp, anda similarly narrow leading edge at the ramp raiser when in use, further facilitates rolling of equipment onto the inclined surface.

[0014] By arranging the ramp raiser with a generally parallel upper and lower face, the ramp raiser provides a stable footprint on the floor while also presenting a flat seating surface for the ramp. This preserves the alignment of the ramp and the raiser side walls, reducing the potential for lateral displacement and enhancing overall stability of the assembly.

[0015] In some arrangements, the ramp raiser may include an inner side wall that sits flush against the inner side wall of the ramp when the two components are connected. This continuity of the inner wall profile helps to ensure that the ramp and raiser behave as a single integrated unit, with minimal lateral shifting under load.

[0016] The inner upper bearing face of the ramp raiser can be dimensioned so that its length matches the length of the ramp. With this arrangement, the entire underside of the ramp is supported over its full extent when in the raised position, distributing applied forces evenly and reducing concentrated stresses. In a further refinement, the width of the inner upper bearing face can correspond to the width of the ramp, so that the ramp side walls and those of the raiser align closely. This not only ensures stable placement but also prevents rocking of the ramp when subjected to uneven or eccentric loading.

[0017] For both the ramp and the ramp raiser, sets of feet may be located at their corners. When these feet are seated in sockets formed in the lower bearing faces, the assembly engages the floor surface with improved grip and reduced risk of movement. Materials such as rubber or elastomer can be used, allowing loads to be borne securely while also protecting delicate surfaces, for example tiled or polished concrete flooring.

[0018] The connection between the span and the ramps may preferably take the form of a knuckle joint with interlocking knuckles and a pin extending through them. This type of joint permits simple manual assembly while also allowing pivoting motion that accommodates uneven ground surfaces. The pin may be provided with an insertionend to ease introduction through the aligned knuckles, and a locking end that engages with a locking formation on one of the knuckles.

[0019] In an optional refinement, the locking end and the locking formation can be shaped to provide a twist-lock action. A side projection on the locking end may pass through a radial slot in the knuckle, and then be retained out of alignment with the slot when the pin is rotated. Such an arrangement resists inadvertent withdrawal of the pin while still allowing quick release when deliberate rotation is applied.

[0020] The pin may be manufactured as a hollow metal tube, which ensures strength while keeping weight low for ease of handling. The side projection may be provided by a screw head fixed into the wall of the tube, or alternatively by an end cap fitted to the tube. The end cap can itself form the projection or provide a knob for twisting the pin, thus combining a locking function with a manual grip.

[0021] Each ramp may be provided with outer end screw holes positioned adjacent its outer edge. These holes allow fastening anchors to secure the ramps to a floor surface. The entrances of the screw holes may be widened so that the heads of the anchors can be recessed beneath the ramp surface. Such recessing avoids protrusions that could interfere with traffic across the ramp. To resist wear, a metal bushing may be installed permanently within the screw hole, thereby reinforcing the surrounding material against the torque and compressive forces exerted by anchor bolts.

[0022] The connection between a ramp and a ramp raiser may involve both hooks and screws. Hooks positioned on the inner side of the ramp raiser may engage through apertures formed in the ramp wall, providing immediate mechanical retention. As the ramp is pivoted downward into place, screw holes in the ramp and the raiser align at the outer side, allowing screws to be inserted. This combined engagement both locks the ramp in position and clamps the two components together, resisting separation during use.

[0023] The hooks themselves may be integrally moulded with the ramp raiser, engaging apertures in the ramp wall when the two components are first angled together. As the ramp pivots into its final seated position, the aligned screw holes canbe fastened, producing a secure multi-point connection. The ability to pivot the ramp into place simplifies assembly and ensures correct alignment.

[0024] The ramp raiser may be equipped with recessed handles formed in its side walls. Such handles allow workers to carry the raiser comfortably without protrusions, even when space is confined. Internal knurling within the handles can improve grip, reducing the likelihood of slippage when the component is being lifted, particularly in conditions where hands may be wet, dusty, or gloved.

[0025] The ramps may incorporate internal strengthening ribs arranged in a lattice pattern. These ribs distribute applied loads across the body of the ramp, maintaining rigidity while limiting the weight of the component. Additionally, an internal strengthening column may extend vertically within the ramp. A generally round geometry can be used for this column, increasing load-bearing capacity at critical regions and preventing deformation under heavy use.

[0026] Assemblies may be connected side-by-side using U-shaped connecting pins that engage apertures formed at the lateral edges of the ramps. This enables multiple units to be combined into a wider accessway. The apertures can be recessed within slots so that the bridge of the U-shaped pin lies below the ramp surface, preventing any obstruction to wheeled equipment.

[0027] The connector pins spanning the knuckles at the articulating joints may also be formed with a distal aperture through which a linchpin can be inserted. This provides an additional securing measure, ensuring that the pins cannot migrate out of position even in high-vibration environments. In a further arrangement, U-shaped connecting pins can be used to span between the distal apertures of connector pins in adjacent assemblies, thereby securing two assemblies together not only at their edges but also at their joints. This creates a more rigid multi-unit structure for carrying heavy or wide loads.

[0028] In use, the assembly may be positioned so that the ramps are placed on either side of an obstacle and the span is secured between them by the articulating joints and connector pins. Once assembled in this manner, the obstacle can be traversedsafely by personnel or equipment passing across the continuous inclined and bridging surfaces.

[0029] In one arrangement, the ramps are placed directly on the floor surface without use of a ramp raiser, enabling transition across a relatively low obstruction such as a sliding door track or threshold where floor levels are substantially equal on either side. This simple configuration requires minimal set-up and allows fast deployment.

[0030] In another arrangement, both ramps may be elevated on respective ramp raisers, allowing the assembly to span across a higher obstacle. The ramp raisers provide the necessary additional elevation while preserving a continuous inclined surface from the floor up to the span. This configuration is suited to step edges or other obstructions presenting greater vertical discontinuity.

[0031] The assembly can also be adapted to situations where floor levels differ on each side of the obstruction. In such circumstances, one ramp may be supported directly on the floor while the other is supported by a ramp raiser, thereby compensating for the uneven levels and keeping the span substantially horizontal.

[0032] The ramps may optionally be anchored to the underlying surface by inserting fasteners such as expansion bolts through outer end screw holes. This secures the ramps against lateral displacement during repeated use or when subjected to rolling loads.

[0033] A wider accessway may be created by connecting two assemblies side-by- side. This may be carried out by inserting U-shaped connecting pins into apertures formed at the lateral edges of adjacent ramps, linking the assemblies together into a single structure.

[0034] In a further refinement, the U-shaped connecting pins may be positioned so that they span between apertures formed at the distal ends of connector pins of adjacent assemblies. By tying the assemblies together not only at their lateral edges but also at their joints, the resulting structure behaves as a unified wider pathway.

[0035] Additional security can be provided by inserting a linchpin through an aperture formed at the distal end of a connector pin spanning the knuckles of an articulatingjoint. This measure ensures the connector pin remains captive in high-vibration environments, maintaining the integrity of the joint during repeated use.

[0036] Other aspects of the invention are also disclosed.Brief Description of the Drawings

[0037] Notwithstanding any other forms which may fall within the scope of the present invention, preferred embodiments of the disclosure will now be described, by way of example only, with reference to the accompanying drawings in which:

[0038] Figure 1 shows a perspective view of a modular ramp assembly with a pair of ramps and a span connected by articulating joints.

[0039] Figure 2 shows one of the ramps with a connecting pin.

[0040] Figure 3 shows a perspective disassembled view of the assembly.

[0041] Figure 4 shows a bottom perspective disassembled view of the assembly.

[0042] Figure 5 shows a perspective view of the assembly with a pair of ramp raisers supporting both ramps.

[0043] Figure 6 shows a perspective view of a ramp raiser including locator lugs.

[0044] Figure 7 shows a side view of the assembly with one ramp supported by a ramp raiser and the other ramp bearing directly on the floor.

[0045] Figure 8 shows a closer view of a ramp connected to a ramp raiser.

[0046] Figure 9 shows a side view of a ramp raiser separated vertically from the ramp above.

[0047] Figure 10 shows a pair of assemblies connected side-by-side using U-shaped connecting pins.Description of Embodiments

[0048] With reference to Figures 1 , 7, 8, and 9, a modular ramp assembly 100 is shown comprising a pair of ramps 101 and a span 102 connected between the ramps 101 by respective releasable articulating joints 103. The arrangement of the ramps 101 and span 102 defines a void 134 between the inner side walls 104 of the ramps 101 beneath the span 102. The modular construction allows the ramps 101 and span102 to be transported and assembled at a work site to traverse an obstruction such as a sliding door track or subsill.

[0049] Each ramp 101 is wedge-shaped, defining a lower bearing face 135 that is configured to rest on a floor surface, and an upper angled ramp face 136 that extends upwardly from an outer edge 105 towards the span 102. The upper angled ramp face 136 provides a continuous inclined travel surface for personnel or equipment. In preferred embodiments, the top travel surface 107 of each ramp 101 is provided with ribs 108 or equivalent surface formations to enhance grip. The side walls 106 of the ramps 101 extend between the lower bearing face 135 and the upper angled ramp face 136, and in the illustrated embodiments the side walls 106 are substantially vertical.

[0050] The span 102 extends between the inner sides of the ramps 101 and is shaped to bridge the obstruction. In one embodiment the span 102 is substantially planar; in another embodiment the span 102 is slightly arc-shaped to increase rigidity and to create a greater clearance height within the void 134. The releasable articulating joints 103 permit relative pivoting between the span 102 and each ramp 101 , enabling the assembly 100 to conform to uneven or stepped floor surfaces while maintaining a continuous upper travel path.

[0051] The assembly 100 preferably further comprises a ramp raiser 122 which is configured to elevate a ramp 101 relative to the floor surface. The ramp raiser 122 defines a secondary lower bearing face 137 that is configured to rest on the floor surface. An outer angled ramp face 138 extends upwardly from a secondary outer edge 139, and an inner upper bearing face 140 extends generally parallel to the secondary lower bearing face 137. The inner upper bearing face 140 is dimensioned to support the lower bearing face 135 of a ramp 101.

[0052] As shown in Figure 7, each ramp 101 is configurable between a lowered position and a raised position. In the lowered position, the lower bearing face 135 bears directly on the floor surface, providing a continuous inclined pathway up to the span 102 without additional components. In the raised position, the lower bearing face 135 of the ramp 101 bears upon the inner upper bearing face 140 of the rampraiser 122, while the secondary lower bearing face 137 of the ramp raiser 122 bears directly on the floor surface. This arrangement ensures that both in the lowered and raised positions, either the lower bearing face 135 or the secondary lower bearing face 137 rests directly on the floor surface, thereby allowing the assembly 100 to withstand substantial loads without reliance on intermediate supports.

[0053] Figure 9 illustrates that when the ramp 101 is supported in the raised position, the upper angled ramp face 136 of the ramp 101 and the outer angled ramp face 138 of the ramp raiser 122 are generally contiguous, forming a continuous ramp surface from the floor to the span 102. The continuity of the inclined faces facilitates smooth rolling of wheeled equipment such as trolleys and wheelbarrows, avoiding any step or hindrance at the junction. The use of a narrow outer edge 105 at the ramp 101 in the lowered position, and a corresponding narrow secondary outer edge 139 of the ramp raiser 122 in the raised position, further eases the initial rolling of equipment onto the inclined surfaces.

[0054] The configuration of the ramp raiser 122 with a flat inner upper bearing face 140 not only provides a stable interface with the lower bearing face 135 of the ramp 101 but also allows the ramp raiser 122 to be dimensioned to match the footprint of the ramp 101 so that the side walls 106 of the ramp and the ramp raiser 122 are contiguous. This arrangement improves stability and alignment of the assembly 100 while simplifying installation on site.

[0055] With further reference to Figures 7 to 9, in some embodiments the ramp raiser 122 further defines an inner side wall 141 . When a ramp 101 is supported in the raised position on the ramp raiser 122, the inner side wall 141 of the ramp raiser 122 is generally contiguous with the inner side wall 104 of the ramp 101. This continuity ensures that the ramp raiser 122 effectively extends the vertical profile of the ramp 101 , maintaining a uniform structural outline on the inner side of the assembly 100. The alignment of side walls 104, 141 also prevents lateral shifting of the ramp 101 relative to the ramp raiser 122 under load, thereby enhancing the overall stability of the structure.

[0056] In preferred arrangements, the inner upper bearing face 140 of the ramp raiser 122 is dimensioned such that its length corresponds to the length of the ramp 101. This length matching ensures that the entire lower bearing face 135 of the ramp 101 is in flat contact with the inner upper bearing face 140 when in the raised position. The flat-to-flat engagement over the full length of the ramp 101 spreads the applied load evenly, allowing the assembly 100 to bear heavy traffic without creating concentrated stress points that might otherwise compromise structural integrity.

[0057] Similarly, the inner upper bearing face 140 may also be dimensioned so that its width corresponds to the width of the ramp 101. This arrangement ensures that the lateral side walls 106 of the ramp 101 are generally contiguous with the lateral side walls of the ramp raiser 122 when connected. The width matching provides proper alignment and prevents rocking or uneven engagement across the lateral dimension of the ramp assembly 100. It also ensures that the ramp raiser 122 underlies and supports the full footprint of the ramp 101 , further improving stability under load.

[0058] As shown in Figures 1 and 9, the lower bearing face 135 of the ramp 101 and the secondary lower bearing face 137 of the ramp raiser 122 may each support a set of feet 129 positioned at respective corners. In the illustrated embodiments, sockets128 are formed in the bearing faces 135 and 137 to receive the feet 129. The feet129 are preferably formed from rubber or an equivalent elastomeric material and serve to enhance grip with the floor surface. They also distribute loads more evenly and provide protection to finished floor surfaces, such as tiled or polished concrete surfaces, which might otherwise be scratched or damaged. The use of a quadrant of feet 129 on each bearing face ensures that both the ramp 101 in its lowered position and the ramp raiser 122 in its raised position can withstand substantial weight without undue rocking or shifting.

[0059] With reference to Figures 1 to 4, each articulating joint 103 between the span 102 and the ramps 101 is in the form of a knuckle joint comprising a series of interlocking knuckles 112. The knuckles 112 are integrally formed with the adjacent ends of the span 102 and ramps 101. When assembled, the interdigitated knuckles112 define a longitudinally extending eye 114 through which a connector pin 113 is receivable. This arrangement permits the span 102 to pivot relative to the ramps 101 , allowing the assembly 100 to conform to uneven or stepped floor surfaces while maintaining a continuous travel surface.

[0060] The connector pin 113 is elongate and may be manually inserted through the eye 114 of the knuckle joint 103. The pin 113 defines an insertion end 115 configured to pass smoothly through the aligned knuckles 112, and a locking end 116 that engages with a locking formation 117 provided on a proximal knuckle 112A.

[0061] In a preferred embodiment, the locking end 116 and locking formation 117 cooperate in a twist-lock configuration. As shown in Figure 3, the locking end 116 of the pin 113 includes a side projection 118, while the locking formation 117 of the proximal knuckle 112A defines a radial slot. During assembly, the side projection 118 passes through the radial slot, and upon rotation of the pin 113, the projection 118 is retained out of alignment with the slot. This prevents withdrawal of the pin 113 until it is deliberately rotated back into alignment, providing a secure yet quickly releasable connection.

[0062] The pin 113 may comprise a hollow metal tube 119, for example aluminium or steel, which provides sufficient rigidity to resist shear and bending forces while minimising weight for ease of handling. In one arrangement, the side projection 118 is formed by a screw head inserted through the wall of the metal tube 119 adjacent the locking end 116. In another arrangement, the locking end 116 is defined by an end cap 120 fitted into the proximal end of the metal tube 119. The end cap 120 may itself form the side projection 118, or it may provide a small knob to facilitate manual twisting of the pin 113 into the locked position.

[0063] As shown in Figures 1 and 4, each ramp 101 further defines at least one outer end screw hole 121 located adjacent the outer edge 105. These screw holes 121 are configured to receive ground fastening anchors, such as expansion bolts or concrete screw anchors, enabling the ramps 101 to be secured directly to a floor surface such as a concrete slab. This arrangement resists lateral displacement of the ramps 101during use, particularly in construction environments where heavy trolleys or wheelbarrows may repeatedly traverse the assembly 100.

[0064] With reference to Figures 1 , 3 and 4, each outer end screw hole 121 of the ramps 101 may include a widened entrance to recess the head of the ground fastening anchor beneath the upper angled ramp face 136. This recessed arrangement avoids protrusions on the travel surface, thereby reducing the risk of obstruction or tripping and ensuring that wheeled equipment can roll smoothly over the ramp 101 without interference from exposed fastener heads.

[0065] In some embodiments, a metal bushing is permanently installed within each screw hole 121. The bushing protects the surrounding moulded plastic from compressive and shear stresses exerted by the fastening anchor, improving durability over repeated installations and removals. The bushing also ensures that torque from tightening the anchor bolt is transferred efficiently without degrading the material of the ramp 101 .

[0066] With further reference to Figures 3, 7 and 8, the assembly 100 may further comprise connectors configured to connect the ramp 101 to the ramp raiser 122. Preferably, these connectors are configured to hook together at an inner side and screw together at an outer side. In the illustrated arrangement, the ramp raiser 122 defines hooks 126 on its inner side which are engageable through apertures 124 provided in the inner wall 104 of the ramp 101. The ramp 101 is initially angled relative to the ramp raiser 122 so that the hooks 126 engage into the apertures 124, and then pivoted downward onto the inner upper bearing face 140 of the ramp raiser 122. As the ramp 101 pivots into position, screw holes 121 defined in the ramp 101 align with corresponding holes 125 in the ramp raiser 122 at the outer side. Screws are then inserted through the collocated screw holes to secure the connection in combination with the inner hooks 126. This two-stage hook and screw connection provides both positive engagement and clamping force, ensuring that the ramp 101 is firmly retained on the ramp raiser 122 under operational loads.

[0067] With reference to Figures 3, 7, 8 and 9, the ramp raiser 122 may define one or more hooks 126 projecting from its inner side. These hooks 126 are shaped andpositioned to engage through apertures 124 defined in the inner wall 104 of the ramp 101. This engagement provides an initial mechanical interlock between the ramp 101 and the ramp raiser 122, resisting separation in a vertical direction once the ramp 101 is lowered into place.

[0068] As further shown in Figures 7 and 8, the arrangement allows the ramp 101 to be pivoted onto the ramp raiser 122. The hooks 126 first engage the apertures 124 when the ramp 101 is held at an angle. As the ramp 101 is rotated downward, the lower bearing face 135 comes into contact with the inner upper bearing face 140 of the ramp raiser 122, and at the same time the screw holes 121 of the ramp 101 collocate with the corresponding holes 125 of the ramp raiser 122 at the outer side. Fastening screws may then be inserted through the aligned holes 121 , 125 to clamp the ramp 101 onto the ramp raiser 122. The combination of inner-side hook engagement and outer-side screw fastening ensures both secure retention and ease of assembly, allowing the components to be quickly connected and disconnected without tools other than a screwdriver.

[0069] With reference to Figure 4, the ramp raiser 122 may further define handles 131 recessed in lower edges 127 of its side walls 106. The recessed arrangement allows the ramp raiser 122 to be lifted and carried conveniently without protruding parts that might catch or obstruct during transport. The handles 131 are shaped to be gripped comfortably, facilitating manual handling of the ramp raiser 122 even when connected to a ramp 101 .

[0070] With reference to Figure 4, the recessed handles 131 of the ramp raiser 122 may optionally define internal knurling. The knurling provides a textured grip surface, making it easier for workers to grasp and carry the ramp raiser 122 securely, particularly when hands are wet, dusty, or gloved. The recessed and knurled handles therefore combine convenient portability with improved handling safety in a construction environment.

[0071] As shown in Figures 1 and 4, the ramps 101 are preferably formed with internal strengthening ribs 110. These ribs 110 are integrally moulded with the body of the ramp 101 and arranged in a lattice-like pattern extending across the ramp footprint.The ribs 110 may intersect perpendicularly or at other angles to form a grid structure, distributing loads applied to the ramp 101 across its width and length. This internal rib structure significantly increases the rigidity of the ramp 101 while keeping the material usage and weight to a minimum, thereby making the ramps both durable and portable.

[0072] In addition to the strengthening ribs 110, each ramp 101 may also define an internal strengthening column 111 , as shown in Figure 4. The strengthening column111 is typically of generally round cross-sectional geometry and extends vertically within the ramp 101. The column 111 provides concentrated load-bearing capacity at a critical region of the ramp 101 , enhancing its ability to support heavy equipment or vehicles without deformation. The combination of ribs 110 and column 111 ensures that the ramps 101 maintain structural integrity under substantial repeated loading.

[0073] With reference to Figure 10, a pair of assemblies 100 may be connected together side-by-side to provide a widened pathway. In this arrangement, U-shaped connecting pins 142 are employed to secure the lateral edges of adjacent ramps 101 . Each U-shaped connecting pin 142 has a pair of legs configured for insertion into corresponding apertures 143 formed at the lateral edges of the ramps 101. When inserted, the connecting pins 142 mechanically link the adjacent ramps 101 so that the assemblies 100 remain in aligned side-by-side relationship during use.

[0074] As further illustrated in Figure 10, each aperture 143 may be recessed within a slot 144. This allows the bridge portion of the U-shaped connecting pin 142 to be recessed beneath the upper angled ramp face 136. The recessed arrangement prevents the bridge portion from protruding above the travel surface, thereby avoiding obstruction to users or equipment moving across the ramps 101. This configuration ensures a safe and continuous rolling surface even when two assemblies 100 are coupled together laterally.

[0075] Figure 10 also illustrates that the connector pin 133, which spans the knuckles112 at the articulating joints 103, may include a distal end defining an aperture 145. A linchpin can be inserted through the aperture 145 to provide an additional layer of security, preventing unintentional withdrawal of the connector pin 133 during use.This is particularly advantageous in high-vibration environments where the assembly 100 may otherwise be subjected to forces tending to dislodge the connector pin 133.

[0076] In the embodiment of Figure 10 where a pair of assemblies 100 are connected together adjacently, a U-shaped connecting pin 142 may be inserted so that its legs extend into apertures 145 formed in the distal ends of adjacent connector pins 133. In this manner, the U-shaped connecting pin 142 not only links the lateral edges of the ramps 101 but also spans directly between the connector pins 133 of neighbouring assemblies. This dual connection increases rigidity of the combined structure and ensures that both assemblies act together to form a stable, widened platform for passage of personnel or equipment.

[0077] In preferred embodiments, the ramps 101 , the span 102, and the ramp raisers 122 are formed from moulded plastic, such as reinforced polypropylene or glass-filled nylon, which provides a balance of strength, durability, and reduced weight for ease of handling. Structural features such as the interlocking knuckles 112, hooks 126, and locator lugs 130 may also be integrally moulded in plastic. The connector pins 113 are preferably made from metal, for example aluminium or steel, to withstand shear forces at the articulating joints 103. Metal may also be used for inserts such as bushings within screw holes 121 , while fasteners, U-shaped connecting pins 142, and linchpins inserted through apertures 145 are likewise conveniently manufactured from steel to provide robustness and resistance to wear.

[0078] With reference to Figures 1 to 10, an exemplary method of use of the modular ramp assembly 100 will now be described. The modular nature of the assembly 100 allows it to be transported in disassembled form, assembled in different configurations, and adapted to a variety of site conditions.

[0079] In a first use case, the assembly 100 is employed to transition across a relatively low obstacle, such as a sliding door track or threshold where the floor levels are substantially the same on both sides of the obstruction. In this arrangement, the ramps 101 are placed directly on the floor surface in the lowered position, with their lower bearing faces 135 bearing directly on the floor. The span 102 is then connected between the ramps 101 using the articulating joints 103 and connector pins 113. Inthis configuration, the upper angled ramp faces 136 of the ramps 101 provide a smooth inclined approach, while the span 102 bridges over the obstacle without the need for any ramp raisers 122. This is particularly effective for traversing sliding door tracks or similar floor-mounted features without causing damage.

[0080] In a second use case, illustrated in Figure 5, the assembly 100 is adapted for a higher obstruction where both sides of the obstacle require elevation. Here, a pair of ramp raisers 122 are installed, one beneath each ramp 101. Each ramp 101 is raised into the raised position, with its lower bearing face 135 supported on the inner upper bearing face 140 of the respective ramp raiser 122. The secondary lower bearing faces 137 of the ramp raisers 122 then bear directly on the floor surface. In this configuration, the outer angled ramp faces 138 of the ramp raisers 122 are contiguous with the upper angled ramp faces 136 of the ramps 101 , forming continuous ramp surfaces on both sides of the span 102. This arrangement enables smooth passage over obstacles of greater height, such as step edges or raised thresholds.

[0081] In a third use case, illustrated in Figure 7, the assembly 100 is adapted to uneven floor surfaces by installing a ramp raiser 122 beneath only one of the ramps 101. In this arrangement, the right-hand ramp 101 is shown in the lowered position with its lower bearing face 135 resting directly on the floor surface, while the left-hand ramp 101 is supported in the raised position by a ramp raiser 122. This configuration allows the span 102 to remain substantially level despite the difference in floor levels on opposite sides of the obstacle. The ability to install a ramp raiser 122 on only one side of the assembly 100 provides adaptability to site conditions where floor levels are not uniform.

[0082] In a fourth use case, shown in Figure 10, the assembly 100 is expanded laterally by connecting two assemblies 100 side-by-side. In this arrangement, II- shaped connecting pins 142 are inserted into apertures 143 defined in the lateral edges of adjacent ramps 101. The apertures 143 may be recessed within slots 144 so that the bridge portion of the U-shaped connecting pins 142 is recessed below the upper angled ramp face 136, thereby avoiding obstruction to users or equipment. Inanother arrangement, the U-shaped connecting pins 142 may span between apertures 145 formed at the distal ends of connector pins 133 of adjacent assemblies 100, thereby linking the assemblies both at their lateral edges and at their articulating joints 103. This configuration creates a widened ramp system capable of accommodating larger equipment such as wheelie bins, carts, or wide-load trolleys.

[0083] In all use cases, the assembly 100 may optionally be secured to the ground by inserting ground fastening anchors through the outer end screw holes 121 of the ramps 101. The widened entrances of the screw holes 121 allow the heads of the anchors to be recessed beneath the upper angled ramp faces 136, and metal bushings may be provided within the screw holes 121 to protect against wear. Linchpins inserted through apertures 145 at the distal ends of connector pins 133 provide further security, ensuring the connector pins 113 cannot be unintentionally withdrawn during use.

[0084] During operation, the ribs 108 formed on the upper surfaces 107 of the ramps 101 enhance traction, while the feet 129 supported in sockets 128 of the lower bearing faces 135 and secondary lower bearing faces 137 prevent slippage and protect the floor surface. The strengthening ribs 110 and columns 111 within the ramps 101 provide the necessary load-bearing capacity for construction equipment, personnel, and heavy wheeled loads.

[0085] At the conclusion of use, the assembly 100 can be disassembled by removing the connector pins 113 from the articulating joints 103 and disengaging the ramps 101 from any ramp raisers 122. The ramps 101 , span 102, ramp raisers 122, and connector pins 113 can then be carried separately, assisted by recessed handles 131 in the ramp raisers 122 and handle apertures 132 in the ramps 101. The modular nature of the assembly 100 allows it to be transported easily around a site and reconfigured to meet varying access requirements.

[0086] The foregoing description, for purposes of explanation, used specific nomenclature to provide a thorough understanding of the invention. However, it will be apparent to one skilled in the art that specific details are not required in order to practise the invention. Thus, the foregoing descriptions of specific embodiments ofthe invention are presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed as obviously many modifications and variations are possible in view of the above teachings. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. It is intended that the following claims and their equivalents define the scope of the invention.

Claims

Claims1. A modular ramp assembly comprising: a pair of ramps, each wedge-shaped and defining a lower bearing face and an upper angled ramp face inclined upwardly from an outer edge; a span connected between inner sides of the ramps by respective releasable articulating joints, thereby defining a void between the inner sides of the ramps beneath the span; and a ramp raiser defining a secondary lower bearing face for supporting on a floor surface, an outer angled ramp face inclined upwardly from a secondary outer edge, and an inner upper bearing face extending generally parallel to the secondary lower bearing face; wherein each ramp is configurable in: a lowered position in which the lower bearing face bears directly on the floor surface; and a raised position in which the lower bearing face bears on the inner upper bearing face of the ramp raiser with the secondary lower bearing face bearing on the floor surface, and wherein the upper angled ramp face of the ramp and the outer angled ramp face of the ramp raiser are generally contiguous to form a continuous ramp surface.

2. The modular ramp assembly of claim 1 , wherein the ramp raiser further defines an inner side wall which is generally contiguous with the inner side wall of the ramp when connected together.

3. The modular ramp assembly of claim 1 , wherein a length of the inner upper bearing face matches a length of the ramp.

4. The modular ramp assembly of claim 1 , wherein a width of the inner upper bearing face matches a width of the ramp.

5. The modular ramp assembly of claim 1 , wherein the lower bearing face of the ramp and the secondary lower bearing face of the ramp raiser each support a set of feet located at respective corners.

6. The modular ramp assembly of claim 1 , wherein each articulating joint is a knuckle joint formed between a series of interlocking knuckles and a pin spanning through an eye defined by the knuckles.

7. The modular ramp assembly of claim 6, wherein the pin has an insertion end and a locking end, the locking end configured to interlock with a locking formation of a proximal end knuckle.

8. The modular ramp assembly of claim 7, wherein the locking end and the locking formation are configured to twist lock.

9. The modular ramp assembly of claim 8, wherein the locking end defines a side projection and wherein the locking formation defines a radial slot through which the side projection can pass.

10. The modular ramp assembly of claim 9, wherein the pin comprises a metal tube.11 . The modular ramp assembly of claim 10, wherein the side projection comprises a screw head.

12. The modular ramp assembly of claim 11 , wherein the locking end comprises an end cap installed in an end of the metal tube.

13. The modular ramp assembly of claim 12, wherein the end cap defines the side projection.

14. The modular ramp assembly of claim 1 , wherein each ramp defines an outer end screw hole configured to accept a ground fastening anchor therethrough.

15. The modular ramp assembly of claim 14, wherein the screw hole defines a widened entrance configured for recessing a head of the ground fastening anchor therein beneath a surface of the ramp.

16. The modular ramp assembly of claim 15, wherein a metal bushing is installed in the screw hole.

17. The modular ramp assembly of claim 1 , further comprising connectors configured to connect the ramp to the ramp raiser, wherein the connectors are configured to hook together at an inner side and screw together at an outer side.

18. The modular ramp assembly of claim 17, wherein the ramp raiser defines hooks which engage through apertures defined through an inner wall of the ramp.

19. The modular ramp assembly of claim 18, wherein the ramp raiser and the ramp define collocating screw holes, wherein the ramp pivots onto the ramp raiser by the hooks so that the screw holes collocate and are secured by screws therethrough.

20. The modular ramp assembly of claim 1 , wherein handles are recessed in lower edges of side walls of the ramp raiser.

21. The modular ramp assembly of claim 20, wherein the handles define internal knurling.

22. The modular ramp assembly of claim 1 , wherein the ramps define internal strengthening ribs.

23. The modular ramp assembly of claim 22, wherein the ramps define an internal strengthening column.

24. The modular ramp assembly of claim 1 , wherein a pair of assemblies are connectable side-by-side by at least one U-shaped connecting pin having legs receivable in corresponding apertures defined at lateral edges of the ramps.

25. The modular ramp assembly of claim 24, wherein each aperture is recessed within a slot such that a bridge portion of the U-shaped connecting pin is recessed beneath the upper angled ramp face to avoid obstruction.

26. The modular ramp assembly of claim 7, wherein a connector pin spanning the knuckles comprises a distal end with an aperture through which a linchpin is insertable for additional security.

27. The modular ramp assembly of claim 26, wherein in a side-by-side configuration of two assemblies, a U-shaped connecting pin spans between apertures of respective connector pins of the assemblies to secure them together.

28. A method of using a modular ramp assembly as claimed in claim 1 , comprising positioning the ramps on either side of an obstacle, connecting the span between the ramps using the releasable articulating joints, and traversing the obstacle across the span.

29. The method of claim 28, wherein the ramps are positioned with their lower bearing faces bearing directly on the floor surface to transition across a relatively low obstacle.

30. The method of claim 28, wherein each ramp is supported in a raised position on a respective ramp raiser to transition across a higher obstacle.

31. The method of claim 28, wherein one of the ramps is supported in a raised position on a ramp raiser and the other ramp is positioned in a lowered position to accommodate uneven floor surfaces on opposite sides of the obstacle.

32. The method of claim 28, further comprising securing the ramps to the floor surface by inserting ground fastening anchors through outer end screw holes of the ramps.

33. The method of claim 28, further comprising connecting a pair of assemblies side- by-side by inserting U-shaped connecting pins into apertures formed in lateral edges of adjacent ramps.

34. The method of claim 33, wherein the U-shaped connecting pins span between apertures at distal ends of connector pins of the adjacent assemblies.

35. The method of claim 28, further comprising securing a connector pin within the articulating joint by inserting a linchpin through an aperture formed at a distal end of the connector pin.

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