A portable modular motorized safety bridge

Abstract

The utility model belongs to engineering equipment technical field, concretely relates to a portable modularization motorized support bridge. Including 2n foldable triangular truss, a plurality of load-bearing rods and fixed fastener, n foldable triangular trusses are expanded and connected through double-hole connecting element, form two groups of trusses, a plurality of load-bearing rods are arranged in parallel between two groups of trusses, and the load-bearing rod is relatively fixed in the preset position of the truss through the fixed fastener. The support bridge of the utility model adopts foldable triangular truss module, realizes light weight, and the total weight is less than or equal to 80kg, and two people can carry it. The utility model improves the lateral load capacity of the hedge type triangular structure, prevents the bridge deformation, realizes high stability, the modularization design supports instant deployment, and realizes quick response.

Description

Technical Field

[0001] This utility model belongs to the field of engineering equipment technology, specifically relating to a portable modular mobile support bridge. Background Technology

[0002] While existing folding bridges (such as CN201921868231) are lightweight, they suffer from insufficient load-bearing capacity (typically ≤1 ton) and poor structural stability. Traditional folding bridges cannot support the Lynx all-terrain vehicle (weighing 1.7 tons) to quickly cross obstacles.

[0003] While existing heavy-duty bridges have high load-bearing capacity, they are bulky and slow to deploy, failing to meet the tactical needs of work teams. Therefore, there is an urgent need for a mobile passage support device that combines lightweight design, high stability, and rapid deployment. Utility Model Content

[0004] The purpose of this invention is to provide a portable modular mobile support bridge that solves the problem of rapid obstacle crossing for work teams, and has the advantages of being lightweight and highly stable.

[0005] The technical solution to achieve the purpose of this utility model is: a portable modular motorized support bridge, comprising 2n foldable triangular trusses, multiple load-bearing rods and fixing fasteners, where n is a natural number;

[0006] n foldable triangular trusses are extended and connected by double-hole connecting elements to form two sets of trusses. Multiple load-bearing bars are arranged in parallel between the two sets of trusses, and the load-bearing bars are fixed to the preset positions of the trusses by fasteners.

[0007] Furthermore, each collapsible triangular truss includes two top main tubes, two bottom main tubes, multiple secondary tubes, multiple diagonal tubes, and collapsible connecting rods.

[0008] Two top main pipes are hinged together by a top pipe hinge structure. Multiple secondary pipes are provided between the top main pipe and the bottom main pipe on the same side. An inclined pipe is provided between the top main pipe and the bottom main pipe located between adjacent secondary pipes. The two bottom main pipes are connected by a foldable connecting rod. The two ends of the foldable connecting rod are rotatably connected to the bottom main pipe. The middle part of the foldable connecting rod can be folded and locked in the unfolded state.

[0009] Furthermore, the jacking pipe hinge structure includes a single ear and a double ear set on two top main pipes and mating with each other. The single ear and the double ear are rotatably connected by a bolt shaft. One end of the bolt shaft is a nut and the other end is provided with a thread that mates with the bolt. The connection between the bolt shaft and the single ear and the double ear is a smooth shaft.

[0010] Furthermore, a connecting seat is provided at the connection between the bottom main tube and the foldable connecting rod. The connecting seat has two ears, and the end of the foldable connecting rod has a single ear. The foldable connecting rod is rotated relative to the bottom main tube by cooperating with the connecting seat through a bolt shaft. The bolt shaft rotation connection is a smooth shaft.

[0011] Furthermore, the foldable connecting rod includes a first rod, a second rod, a foldable connecting rod pin, a latching piece, a nut, a spring, and a latching cylinder.

[0012] The connecting ends of the first and second rods are both partially curved walls with square holes. Opposite to the square holes on the curved walls are notches, and each notch has two ears. The two ears of the first rod and the two ears of the second rod mate with each other. The upper end of the buckle plate has a notch, and on either side of the notch are two protrusions, one high and one low. The higher protrusion moves up and down within the square hole of the first rod, causing the lower protrusion to disengage from or pass through the square hole of the second rod. The width of the notch at the upper end of the buckle plate ensures that, after the first and second rods are extended, the higher and lower protrusions are located within the square holes of the first and second rods, respectively. A rectangular through-frame is located in the middle of the buckle plate. The bottom of the rectangular through-frame has an arc shape that matches the shape of the buckle cylinder. A spring abuts against the upper end of the buckle cylinder and the inner end face of the rectangular through-frame. The folding connecting rod pin passes sequentially through one ear of the first rod, one ear of the second rod, the buckle cylinder, the other ear of the first rod, and the other ear of the second rod. The end of the folding connecting rod pin is engaged with a nut.

[0013] Furthermore, the upper surface inside the rectangular frame in the middle of the buckle piece is provided with a protrusion for limiting the spring.

[0014] Furthermore, the double-hole connecting element consists of two tapered connecting sections with pin holes of gradually changing diameter. The end wall of the main pipe to be connected has two through holes of opposite sizes, one large and one small. The two tapered connecting sections of the double-hole connecting element are inserted into the main pipe to be connected, and are connected to the two main pipes respectively by pins of gradually changing diameter. The diameter of the pin matches the through holes of the two tapered connecting sections and the top pipe, so that the pins are interference-fitted after assembly, thus realizing the connection of the main pipes.

[0015] Furthermore, the fixing fasteners include a lower connecting block for the main pipe, an upper connecting block for the main pipe, and an arc-shaped fastener; the cross-section of the load-bearing rod is circular or square.

[0016] The upper and lower surfaces of the main pipe connecting block and the main pipe connecting block are provided with arcs that match the shape of the bottom main pipe. The main pipe connecting block and the main pipe connecting block are fixed to the bottom main pipe at a predetermined position by bolts. The upper surface of the main pipe connecting block is provided with an arc that is perpendicular to the axis of the bottom main pipe, and the circular load-bearing rod is fixed by cooperating with the arc-shaped fastener. The arc-shaped fastener and the main pipe connecting block are hinged. One end of the fixing fastener is flat and is used to abut against one side of the square load-bearing rod.

[0017] Furthermore, a grid bridge deck with its axis parallel to the main axis is laid on the load-bearing rod.

[0018] This utility model is applicable to the rapid crossing of short-distance obstacles such as broken bridges and trenches by work teams.

[0019] Compared with the prior art, the significant advantages of this utility model are:

[0020] (1) The foldable triangular truss module of this utility model: four modules are connected by connecting holes, double-hole connecting elements and pins to form a 4m span main body. After folding, the volume is ≤2m×0.6m×0.2m, which realizes lightweighting. The total weight is ≤80kg, which can be carried by two people.

[0021] (2) The barricade-type triangular structure of this utility model improves the ability to resist lateral loads and prevents bridge deformation. The triangular structure and rectangular load-bearing bar design ensure that the bridge deck has no displacement and achieves high stability.

[0022] (3) Modular connection design of this utility model: supports assembly within 10 minutes, the expansion interface can connect additional modules to expand the span, supports instant deployment, and realizes rapid response. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the assembly state of the protection bridge of this utility model.

[0024] Figure 2 This is a front view of the unfolded folding truss of this utility model.

[0025] Figure 3 This is a side view of the unfolded folding truss of this utility model.

[0026] Figure 4 This is a top view of the unfolded truss of this utility model.

[0027] Figure 5 This is a partial exploded view of the folding connecting rod of this utility model.

[0028] Figure 6 This is a schematic diagram of the back of the folding connecting rod of this utility model.

[0029] Figure 7This is a schematic diagram of the top main pipe hinge structure of this utility model.

[0030] Figure 8 This is a schematic diagram of the load-bearing rod fixing fastener of this utility model.

[0031] Figure 9 This is a schematic diagram of the double-hole connecting element and the pin of this utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1-Top main pipe, 1-1-Double hole connecting element, 1-2-Pin, 2-Bottom main pipe, 3-Inclined pipe, 4-Secondary pipe, 5-Top pipe hinge structure, 6-Foldable connecting rod, 6-1-Foldable connecting rod pin, 6-2-Snap fastener, 6-3-Nut, 6-4-Spring, 6-5-Snap fastener cylinder, 7-Bearing rod, 8-Fixing fastener. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings.

[0035] like Figure 1 As shown, a portable modular mobile support bridge includes four foldable triangular trusses, six load-bearing bars 7 and fixing fasteners 8;

[0036] n foldable triangular trusses are extended and connected by double-hole connecting elements to form two sets of trusses. Multiple load-bearing rods 7 are arranged in parallel between the two sets of trusses. The load-bearing rods 7 are fixed to the preset positions of the trusses by fasteners 8.

[0037] like Figure 2-4 As shown, each foldable triangular truss includes two top main tubes 1, two bottom main tubes 2, multiple secondary tubes 4, multiple diagonal tubes 3, and foldable connecting rods 6.

[0038] Two top main pipes 1 are hinged together by a top pipe hinge structure 5. Multiple secondary pipes 4 are provided between the top main pipe 1 and the bottom main pipe 2 on the same side. An inclined pipe 3 is provided between the top main pipe 1 and the bottom main pipe 2 located between adjacent secondary pipes 4. The two bottom main pipes 2 are connected by a foldable connecting rod 6. The two ends of the foldable connecting rod 6 are rotatably connected to the bottom main pipe 2. The middle part of the foldable connecting rod 6 can be folded and locked in the unfolded state.

[0039] like Figure 7 As shown, the jacking pipe hinge structure 5 includes a single ear and a double ear that are provided on two top main pipes and cooperate with each other. The single ear and the double ear are rotatably connected by a bolt shaft. One end of the bolt shaft is a nut and the other end is provided with a thread that cooperates with the bolt. The connection between the bolt shaft and the single ear and the double ear is a smooth shaft.

[0040] A connecting seat is provided at the connection between the bottom main tube 2 and the foldable connecting rod 6. The connecting seat has two ears. The end of the foldable connecting rod 6 has a single ear and is connected to the connecting seat through a bolt shaft to achieve a rotatable connection between the foldable connecting rod 6 and the bottom main tube 2. The bolt shaft rotatable connection is a smooth shaft.

[0041] like Figure 5-6 As shown, the foldable connecting rod 6 includes a first rod, a second rod, a foldable connecting rod pin 6-1, a buckle piece 6-2, a nut 6-3, a spring 6-4, and a buckle cylinder 6-5.

[0042] The connecting ends of the first and second rods are both partially curved walls, with square holes on these curved walls. Opposite to the square holes on these curved walls are notches, each with two ears. The two ears of the first rod and the two ears of the second rod mate with each other. The upper end of the latching piece 6-2 has a notch, with two protrusions of different heights on either side of the notch. The higher protrusion moves up and down within the square hole of the first rod, causing the lower protrusion to disengage from or pass through the square hole of the second rod. The width of the notch at the upper end of the latching piece 6-2 allows for the extension of both the first and second rods. The high and low protrusions are located in the square holes of the first rod and the second rod, respectively; the buckle piece 6-2 has a rectangular through frame in the middle, and the bottom shape of the rectangular through frame is an arc that matches the shape of the buckle cylinder 6-5. The spring 6-4 is abutted between the upper end of the buckle cylinder 6-5 and the inner end face of the rectangular through frame; the folding connecting rod pin 6-1 passes through the ear on one side of the first rod, the ear on one side of the second rod, the buckle cylinder 6-5, the ear on the other side of the first rod and the ear on the other side of the second rod in sequence, and the end of the folding connecting rod pin 6-1 is engaged by the nut 6-3.

[0043] The upper surface inside the rectangular frame in the middle of the buckle piece 6-2 has a protrusion for limiting the spring 6-4.

[0044] like Figure 9 As shown, the double-hole connecting element consists of two tapered connecting sections. The two tapered connecting sections are provided with pin holes of gradually changing diameter. The end wall of the main pipe to be connected is provided with two through holes of opposite sizes. The two tapered connecting sections of the double-hole connecting element are respectively inserted into the main pipe to be connected, and are respectively connected to the two main pipes by pins 1-2 of gradually changing diameter. The diameter of pins 1-2 matches the through holes of the two tapered connecting sections and the top pipe, so that pins 1-2 are interference fit after assembly, realizing the connection of the main pipe.

[0045] like Figure 8 As shown, the fixing fastener 8 includes a lower connecting block of the main pipe, an upper connecting block of the main pipe, and an arc-shaped fastener; the cross-section of the load-bearing rod 7 is circular or square.

[0046] The upper and lower surfaces of the main pipe connecting block and the main pipe connecting block are provided with arcs that match the shape of the bottom main pipe 2. The main pipe connecting block and the main pipe connecting block are fixed to the bottom main pipe at a predetermined position by bolts. The upper surface of the main pipe connecting block is provided with an arc that is perpendicular to the axis of the bottom main pipe, and the circular load-bearing rod 7 is fixed by cooperating with the arc-shaped fastener. The arc-shaped fastener and the main pipe connecting block are hinged. One end of the fixing fastener 8 is flat and is used to abut against one side of the square load-bearing rod 7.

[0047] A grid bridge surface with its axis parallel to the main pipe axis is laid on the load-bearing rod 7.

[0048] The present invention discloses a method for assembling a portable modular mobile support bridge, comprising the following steps:

[0049] (a) Assembly steps:

[0050] Step 1: Deploy the truss module

[0051] Two people unfold the four folding truss modules and ensure that the foldable connecting rods on the bottom main tube of the truss module are fully unfolded and the spring safety buckles are in the correct position. After unfolding, pull the foldable connecting rods upward by hand to ensure that they do not deform when the spring safety buckles are not pressed.

[0052] Step 2: Pin Connection

[0053] Before connecting the pins, place the two-hole connecting element into the top and bottom main tubes, aligning the larger diameter hole in the connecting element with the pin connection hole in the main tube. After alignment, align the ports of the two folding truss modules and insert the pin with the small end aligned with the pin connection hole. Ensure that the bottom of the pin protrudes from the hole at the other end of the main tube for a secure connection. Connect the other two folding trusses in the same way.

[0054] Step 3: Place the folding truss module

[0055] Place the two connected folding truss modules in the designated area, and ensure that the distance between the two bottom main pipes that are close to each other is less than two meters, depending on the actual situation.

[0056] Step 4: Place the load-bearing rod

[0057] Place the eight three-meter-long rectangular load-bearing bars into their designated positions on the bottom main pipe and ensure they are stable.

[0058] Step 5: Lay the bridge deck

[0059] Lay the lightweight grid bridge deck flat on the load-bearing poles and ensure its stable placement.

[0060] (II) Extended Applications:

[0061] The total span can be extended to 6m by connecting additional modules through the expansion interface.

[0062] (III) Recycling:

[0063] Step 1: Remove the bridge deck

[0064] Remove the bridge deck from the load-bearing poles.

[0065] Step 2: Remove the load-bearing bar

[0066] Remove the rectangular load-bearing rods from the folding truss module one by one.

[0067] Step 3: Pull out the pin

[0068] Press the pin from the bottom in the opposite direction to disengage it from the connection hole.

[0069] Step 4: Remove the two-hole connector.

[0070] Push and pull the two folding truss modules toward both ends to separate their two ports so that the dual-hole connecting elements can be removed.

[0071] Step 5: Folding the module

[0072] Press the folding button on the bottom folding connecting rod, and simultaneously fold the bottom main tubes on both sides of the folding truss module toward the middle, so that the module becomes a folding structure.

Claims

1. A portable modular mobile support bridge, characterized in that, It includes 2n foldable triangular trusses, multiple load-bearing bars (7) and fixing fasteners (8); n foldable triangular trusses are extended and connected by double-hole connecting elements to form two sets of trusses. Multiple load-bearing rods (7) are arranged in parallel between the two sets of trusses. The load-bearing rods (7) are fixed to the preset position of the truss by fasteners (8).

2. The protective bridge according to claim 1, characterized in that, Each collapsible triangular truss includes two top main tubes (1), two bottom main tubes (2), multiple secondary tubes (4), multiple diagonal tubes (3), and collapsible connecting rods (6). Two top main pipes (1) are hinged together by a top pipe hinge structure (5). Multiple secondary pipes (4) are provided between the top main pipe (1) and the bottom main pipe (2) on the same side. An inclined pipe (3) is provided between the top main pipe (1) and the bottom main pipe (2) located between adjacent secondary pipes (4). The two bottom main pipes (2) are connected by a foldable connecting rod (6). The two ends of the foldable connecting rod (6) are rotatably connected to the bottom main pipe (2). The middle part of the foldable connecting rod (6) can be folded and locked in the unfolded state.

3. The protective bridge according to claim 2, characterized in that, The jacking pipe hinge structure (5) includes a single ear and a double ear set on two top main pipes and cooperating with each other. The single ear and the double ear are rotatably connected by a bolt shaft. One end of the bolt shaft is a nut and the other end is provided with a thread that cooperates with the bolt. The connection between the bolt shaft and the single ear and the double ear is a smooth shaft.

4. The protective bridge according to claim 2, characterized in that, A connecting seat is provided at the connection between the bottom main tube (2) and the foldable connecting rod (6). The connecting seat has two ears. The end of the foldable connecting rod (6) is a single ear and is connected to the connecting seat through a bolt shaft to achieve a rotatable connection between the foldable connecting rod (6) and the bottom main tube (2). The bolt shaft rotatable connection is a smooth shaft.

5. The protective bridge according to claim 2, characterized in that, The foldable connecting rod (6) includes a first rod, a second rod, a foldable connecting rod pin (6-1), a buckle piece (6-2), a nut (6-3), a spring (6-4), and a buckle cylinder (6-5). The connecting ends of the first and second rods are both partially curved walls, with square holes on these curved walls. Opposite to the square holes on the curved walls are notches, and each notch has two ears. The two ears of the first rod and the two ears of the second rod mate with each other. The upper end of the latching piece (6-2) has a notch, with two protrusions of different heights on either side of the notch. The higher protrusion moves up and down within the square hole of the first rod, causing the lower protrusion to disengage from or pass through the square hole of the second rod. The width of the notch at the upper end of the latching piece (6-2) is sufficient to accommodate the higher and lower protrusions after the first and second rods are extended. Located in the square holes of the first rod and the second rod respectively; the buckle piece (6-2) has a rectangular through frame in the middle, the bottom shape of which is an arc matching the shape of the buckle cylinder (6-5); the spring (6-4) is abutted between the upper end of the buckle cylinder (6-5) and the inner end face of the rectangular through frame; the folding connecting rod pin (6-1) passes through the ear on one side of the first rod, the ear on one side of the second rod, the buckle cylinder (6-5), the ear on the other side of the first rod and the ear on the other side of the second rod in sequence, and the end of the folding connecting rod pin (6-1) is engaged by a nut (6-3).

6. The protective bridge according to claim 5, characterized in that, The upper surface inside the rectangular through frame in the middle of the snap-fit ​​piece (6-2) is provided with a protrusion for limiting the spring (6-4).

7. The protective bridge according to claim 1, characterized in that, The double-hole connecting element consists of two tapered connecting sections with pin holes of gradually changing diameter. The end wall of the main pipe to be connected has two through holes of opposite sizes. The two tapered connecting sections of the double-hole connecting element are inserted into the main pipe to be connected, and are connected to the two main pipes respectively by pins (1-2) of gradually changing diameter. The diameter of the pins (1-2) matches the through holes of the two tapered connecting sections and the top pipe, so that the pins (1-2) are interference fit after assembly, thus realizing the connection of the main pipe.

8. The protective bridge according to claim 1, characterized in that, The fixing fastener (8) includes a lower connecting block of the main pipe, an upper connecting block of the main pipe, and an arc-shaped fastener. The cross-section of the load-bearing rod (7) is circular or square. The upper surface of the lower connecting block of the main pipe and the lower surface of the upper connecting block of the main pipe are provided with arcs that match the shape of the bottom main pipe (2). The lower connecting block of the main pipe and the upper connecting block of the main pipe are fixed to the predetermined position of the bottom main pipe by bolts. The upper surface of the upper connecting block of the main pipe is provided with an arc that is perpendicular to the axis of the bottom main pipe, and the circular load-bearing rod (7) is fixed by cooperating with the arc fastener. The arc fastener and the upper connecting block of the main pipe are hinged. One end of the fixing fastener (8) is flat and is used to abut against one side of the square load-bearing rod (7).

9. The protective bridge according to claim 1, characterized in that, A grid bridge deck with its axis parallel to the main axis is laid on the load-bearing rod (7).

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