Portable bridge simulation device

Abstract

The utility model relates to a bridge simulation device, in particular to a portable bridge simulation device which comprises two bridge frames arranged in a mirror image mode, the two bridge frames are connected in a clamped mode through a plurality of bridge plates, each bridge frame comprises two beam frames arranged in a mirror image mode, and the two beam frames are connected in a clamped mode through a plurality of bridge plates. Each beam frame comprises a shell, a first frame set, a second frame set and a third frame set which are sequentially arranged in a sleeving mode from outside to inside, and the two beam frames are connected in a clamped mode through connecting columns arranged in the two third frame sets. Therefore, the utility model provides a portable bridge simulation device. The utility model aims to provide a bridge simulation device which is more flexible, efficient and portable.

Description

Technical Field

[0001] This utility model relates to bridge simulation devices, and more particularly to a portable bridge simulation device. Background Technology

[0002] Bridge simulation devices are widely used in disaster relief efforts, including the development of rescue plans, evacuation plans for disaster areas, and educational demonstrations. However, because bridge lengths and widths vary in real-world rescue environments, it is necessary to use bridge simulation devices of different lengths or widths to assist rescue personnel in quickly designing and validating rescue and evacuation plans. Existing bridge simulation devices often use fixed-length or fixed-width monolithic frame structures, which limits their flexibility and convenience. This not only increases setup time but also fails to accurately simulate the actual situation, hindering rescue personnel from quickly designing and implementing plans. Verifying rescue and evacuation plans extends the time required for developing rescue plans. During training demonstrations, it's necessary to simulate real rescue environments to enable trainees to quickly master rescue techniques. This necessitates using bridge simulators of varying lengths and widths to simulate real-world rescue situations. However, existing bridge simulators cannot simulate bridges of multiple widths or lengths using a single device. Consequently, training requires frequent dismantling and replacement of these simulators. The excessive time required for dismantling and reassembling existing simulators reduces training efficiency and hinders trainees' ability to quickly master rescue techniques. Utility Model Content

[0003] In view of this, the present invention provides a portable bridge simulation device; the purpose is to provide a more flexible, efficient and portable bridge simulation device.

[0004] This utility model provides a portable bridge simulation device, including two mirror-arranged bridge frames, which are connected by multiple bridge plates.

[0005] The cable tray includes two mirror-arranged beams. Each beam includes a shell, a first frame group, a second frame group, and a third frame group arranged sequentially from the outside to the inside. The two beams are connected by connecting columns arranged in the two third frame groups.

[0006] The first frame assembly includes a first bridge and a first support column. The beginning end of the first support column is rotatably connected to the beginning end of the first bridge via a connecting rod. A sliding groove is provided on the side wall of the outer shell corresponding to the position of the connecting rod. The two ends of the connecting rod pass through two sliding grooves respectively and are connected to the limiting blocks. The inner walls of the two limiting blocks are in contact with the outer surface of the outer shell.

[0007] The second frame assembly includes a second bridge and a second support column. The beginning end of the second support column is rotatably connected to the beginning end of the second bridge through a limiting connector. The lower part of the first bridge is provided with a first limiting groove corresponding to the position of the limiting connector. The two ends of the limiting connector are respectively engaged in the two first limiting grooves. The third frame assembly has the same structure as the second frame assembly.

[0008] Two sliding limit posts are provided at the beginning and end of the connecting post. The four sliding limit posts are arranged symmetrically in pairs. The lower part of the two third bridges is provided with a second limit groove corresponding to the four sliding limit posts. The four sliding limit posts are respectively engaged in the corresponding second limit groove.

[0009] Furthermore, both ends of the limiting connector are provided with slots, and each slot is fitted with a locking limiting member. An elastic component is provided between the beginning of each locking limiting member and the end of the corresponding slot. The ends of the two first limiting slots are provided with two fixing through holes corresponding to the two locking limiting members, and each fixing through hole is fitted with a locking limiting member.

[0010] Furthermore, the engaging and limiting component includes a base that engages between the inner walls of the slot, a limiting post extending outward from the center of the base, the diameter of the limiting post being smaller than the diameter of the base, a limiting ring extending inward from the beginning of the slot, the inner wall of the limiting ring being in contact with the outer surface of the limiting post, and the limiting ring and the base forming a limiting structure.

[0011] Furthermore, the ends of both outer shells are connected to the beginnings of the two guide bridges via rotating rollers, and the ends of the two guide bridges are provided with fixing grooves. The two guide bridges are engaged with the ends of the outer shells via the corresponding fixing grooves.

[0012] Furthermore, the bottom surface of the second bridge is in contact with the top surface of the second support column, and the diameter of the starting end of the second support column is smaller than the diameter of the starting end of the second bridge. A fixing block is provided extending upward from the starting end of the second support column, and the outer wall of the fixing block is in contact with the inner wall of the starting end of the second support column.

[0013] Furthermore, the elastic component is a spring.

[0014] Furthermore, the limiting connector is a hollow columnar structure.

[0015] Furthermore, both ends of the bridge approach frames are provided with anti-slip pads, and the outer surface of the anti-slip pads is evenly distributed with multiple protrusions.

[0016] Furthermore, the connecting column is a hollow cuboid structure.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. This utility model solves the problems of low flexibility, low efficiency in rescue training, and inconvenience in carrying existing bridge simulation devices by combining two mirror-image bridge frames. In use, the approach bridge frames on both bridge frames are flipped to both sides, forming two approach bridges from two corresponding approach bridge frames. By stretching the two beam frames to both sides, two first frame groups, two second frame groups, and two third frame groups extend from the two outer shells. The connecting columns within the two third frame groups maintain the connection between the two beam frames. Simultaneously, because the first bridge and the first support column are rotatably connected to the outer shell via connecting rods, and the second bridge and the second support column, and the third bridge and the third support column are rotatably connected via limiting connectors, when the first, second, and third frame groups are pulled out, the outer shell, the first bridge, the second bridge, the third bridge, and the connecting columns remain connected. Only the first, second, and third support columns flip downwards, so that the ends of the first, second, and third support columns are connected to the connecting columns. The two bridge frames are placed side-by-side, with the first, second, and third support columns perpendicular to the outer shell. The two beam frames extend on the same principle, undergoing the same stretching operation. They are then placed relatively parallel, and finally, multiple bridge plates are snapped onto the upper surfaces of the two bridge frames to complete the assembly. This invention also allows for different lengths to be selected based on actual usage: only the first frame group can be extended from the outer shell, or the second frame group can be partially pulled out, or the second frame group can be completely pulled out while the third frame group is partially pulled out. In this case, the connecting column is located within the two third frame groups, thus maintaining the connection between the two beam frames. After stretching, the two bridge frames are placed relatively parallel, and multiple bridge plates are sequentially snapped onto the top surfaces of the two bridge frames to complete the assembly. This allows for quick assembly and storage, and the compact size after storage facilitates carrying and transfer, improving portability, training efficiency in rescue operations, and enhancing the flexibility and practicality of this invention.

[0019] 2. This utility model, through the combination of a locking groove, a locking limiting component, and an elastic component at both ends of the limiting connector, utilizes the characteristics of the elastic component to enable the limiting connector to be more securely locked in the first limiting groove, ensuring that the second frame can slide along the direction of the first limiting groove. This effectively prevents the second frame from sliding out of the first bridge when pulled out or retracted, ensuring that the second frame can be securely locked in the first limiting groove by the limiting connector regardless of its position within the first bridge. This improves the stability of this utility model during extension and retraction, thereby enhancing its flexibility and practicality.

[0020] 3. This utility model, through the limiting structure formed by the limiting ring and the base of the limiting post, enables the locking limiting component to be securely locked in the slot, solving the problem of damage caused by the locking limiting component slipping out of the slot. This effectively extends the service life of the locking limiting component, reduces the usage and maintenance costs of this utility model, and ensures smooth extension and retraction during use, thus improving the practicality of this utility model.

[0021] 4. By providing two bridge frames at the ends of the outer shell, this utility model can form a bridge simply by flipping the bridge frames and placing the bridge plate on them during use. Therefore, there is no need to carry additional bridge components, which effectively improves the portability and practicality of this utility model.

[0022] 5. This utility model uses a fixing block to connect the second bridge and the second support column, so that the bottom surface of the second bridge and the top surface of the second support column are in contact, increasing the load-bearing capacity and stability. At the same time, it ensures that after the second support column is flipped, the starting end of the second support column can be in contact with the inner wall of the starting end of the second bridge, thereby increasing the stability of this utility model. Therefore, when retracting, the second bridge and the second support column can be put into the first frame by pushing the outer shell, which improves the time for changing the bridge length, improves the flexibility of this utility model, reduces the time for dismantling this utility model, improves the work efficiency when retracting this utility model, improves the training efficiency for rescue, and improves the practicality of this utility model.

[0023] 6. This utility model uses a spring as the elastic component, which allows for the selection of springs with different elastic forces in different usage scenarios. While ensuring that the performance remains unchanged, it reduces the weight of this utility model, reduces the production cost, makes this utility model more flexible and portable in use, and improves the practicality of this utility model.

[0024] 7. This utility model increases the friction between the bridge guide and the placement surface by setting an anti-slip pad at the end of the bridge guide, making the utility model more stable during placement and preventing relative sliding with the placement surface, thus improving the stability and practicality of the utility model.

[0025] 8. The hollow structure limiting connector and connecting column of this utility model reduce the weight of this utility model while ensuring that the two beam frames can be stably connected, thereby improving the portability and practicality of this utility model. Attached Figure Description

[0026] Figure 1 This is a front view structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0028] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention viewed from below;

[0029] Figure 4 This is a schematic diagram of the front cross-sectional structure of the second embodiment of the present invention;

[0030] Figure 5 This is a side sectional view of the second frame assembly of this utility model.

[0031] Reference numerals: 1. Outer shell, 2. Connecting column, 3. First bridge, 4. First support column, 5. Connecting rod, 6. Slide groove, 7. Limiting block, 8. Second bridge, 9. Second support column, 10. Limiting connector, 11. First limiting groove, 12. Sliding limiting column, 13. Slot, 14. Limiting column, 15. Elastic component, 16. Base, 17. Rotating roller, 18. Guide bridge frame, 19. Third bridge, 20. Third support column, 21. Second limiting groove. Detailed Implementation

[0032] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] like Figure 1As shown, this utility model provides a portable bridge simulation device, including two mirror-arranged bridge frames. The two bridge frames are connected by multiple bridge plates (not shown in the figure). The multiple bridge plates include multiple sets of bridge plates of different lengths. The splicing area of ​​each set of bridge plates is greater than or equal to the area of ​​the upper surface of the bridge frame after it is fully stretched. Since this utility model is only used for the formulation of rescue plans in natural disaster relief, the formulation of personnel evacuation plans in disaster areas, and as a positional reference in teaching demonstrations, it does not need to have the actual ability for personnel and motor vehicles to pass through.

[0036] like Figure 2 As shown, the cable tray includes two mirror-arranged beams. Each beam includes a shell 1, a first frame group, a second frame group, and a third frame group, which are sequentially nested from the outside to the inside. The two beams are connected by connecting columns 2 set in the two third frame groups. The connecting columns 2 are preferably hollow cuboid structures.

[0037] like Figure 2 , Figure 4 As shown, the first frame assembly includes a first bridge 3 and a first support column 4. The beginning of the first support column 4 is rotatably connected to the beginning of the first bridge 3 via a connecting rod 5. A sliding groove 6 is provided on the side wall of the outer shell 1 at the position corresponding to the connecting rod 5. The two ends of the connecting rod 5 pass through the two sliding grooves 6 respectively and are connected to the limiting block 7. The inner walls of the two limiting blocks 7 are in contact with the outer surface of the outer shell 1.

[0038] like Figure 2 , Figure 4 As shown, the second frame assembly includes a second bridge 8 and a second support column 9. The starting end of the second support column 9 is rotatably connected to the starting end of the second bridge 8 through a limiting connector 10. The bottom surface of the second bridge 8 is in contact with the top surface of the second support column 9, and the diameter of the starting end of the second support column 9 is smaller than the diameter of the starting end of the second bridge 8. A fixing block is provided extending upward from the starting end of the second support column 9, and the outer wall of the fixing block is in contact with the inner wall of the starting end of the second support column 9. A first limiting groove 11 is provided at the lower part of the first bridge 3 corresponding to the position of the limiting connector 10. The two ends of the limiting connector 10 are respectively engaged in the two first limiting grooves 11. The third frame assembly has the same structure as the second frame assembly.

[0039] like Figure 3 As shown, two sliding limit posts 12 are provided at the beginning and end of the connecting post 2. The four sliding limit posts 12 are arranged symmetrically in pairs. The lower part of the two third bridges 19 are respectively provided with second limit grooves 21 corresponding to the four sliding limit posts 12. The four sliding limit posts 12 are respectively engaged in the corresponding second limit grooves 21, so as to firmly connect the two beam frames together.

[0040] like Figure 3 , Figure 5As shown, both ends of the limiting connector 10 are provided with slots 13, and each slot 13 is fitted with a locking limiting component. An elastic component 15 is provided between the beginning of each locking limiting component and the end of the corresponding slot 13. The elastic component 15 can be a spring or other component that can generate elastic force. The ends of the two first limiting grooves 11 are provided with two fixed through holes (not shown in the figure) corresponding to the two locking limiting components. Each of the two fixed through holes is fitted with a locking limiting component.

[0041] like Figure 5 As shown, the locking and limiting component includes a base 16 that engages with the inner wall of the slot 13. A limiting post 14 extends outward from the center of the base 16. The limiting post 14 is a hollow columnar structure, and the diameter of the limiting post 14 is smaller than the diameter of the base 16. A limiting ring extends inward from the beginning of the slot 13. The inner wall of the limiting ring is in contact with the outer surface of the limiting post 14. The limiting ring and the base 16 form a limiting structure.

[0042] like Figure 1 As shown, the ends of the two outer shells 1 are connected to the beginning ends of the two guide bridges 18 via rotating rollers 17. The ends of the two guide bridges 18 are provided with fixing grooves (not shown in the figure). The two guide bridges 18 are engaged with the ends of the outer shells through the corresponding fixing grooves. The ends of the two guide bridges 18 are provided with anti-slip pads (not shown in the figure). Multiple protrusions (not shown in the figure) are evenly distributed on the outer surface of the anti-slip pads.

[0043] The aforementioned outer shell 1, connecting column 2, first frame group, second frame group, third frame group, connecting rod 5, limiting block 7, sliding limiting column 12, limiting column 14 and rotating roller 17 are preferably made of metal materials, such as iron, stainless steel, etc.

[0044] It also has an external storage bag, which is used to store the aforementioned outer shell 1, connecting column 2, first frame group, second frame group, third frame group and multiple bridge plates, etc., for convenient use next time. The storage bag can also hold a simulated river printed on a fabric to achieve a more realistic simulation of the real scene.

[0045] The specific working principle is as follows:

[0046] In use, first flip one of the approach bridge frames on one side to both sides. The starting end of one approach bridge frame engages with the upper surface of the outer shell, and the starting end of the other approach bridge frame engages with the lower surface of the outer shell, thereby generating an interaction force to stably erect the bridge frame (since this portable bridge simulation device is a positional reference, it does not need to have the actual capacity for personnel and motor vehicles to pass through); then stretch the two beam frames to both sides respectively, so that the two first frame groups, two second frame groups, and two third frame groups extend from the two outer shells respectively. When the first frame group extends from the outer shell, the limiting blocks set at both ends of the connecting rod and the outer surface of the outer shell... The limiting blocks and the outer surfaces of the first frame assembly fit together, securing the connecting rod firmly within the groove. Therefore, the connecting rod moves along the groove towards the end of the outer casing. When the connecting rod reaches the end of the groove, the first support column, under its own weight, rotates downwards around the connecting rod, causing its outer wall to contact one side of the bottom surface of the outer casing. The end of the first support column fits against the placement plane, and the first support column is perpendicular to the placement plane. As the beam frame continues to stretch, the limiting connector at the beginning of the second frame assembly moves along the first limiting groove at the bottom of the first bridge. When the limiting connector slides... When the beam reaches the end of the first limiting groove, the limiting post at the top of the limiting connector is pushed out of the slot by the elastic component and engages in the fixed through hole at the end of the first limiting groove. At this time, the second support post, under its own weight, flips downwards around the limiting connector, and the beginning end of the second support post is in contact with the inner wall of the beginning end of the second bridge, ensuring that the second support post is relatively perpendicular to the second bridge, and the end of the second support post is in contact with the placement plane; continue to stretch the beam frame, and similarly pull out the third frame assembly, making the third support post relatively perpendicular to the third bridge and in contact with the placement plane; continue to stretch the beam frame, at this time... The sliding limiting post at the end of the connecting column moves along the second limiting groove at the bottom of the third bridge. When it moves to the end of the second limiting groove, the limiting post at the top of the limiting connector is pushed out of the slot by the elastic component and engages in the fixed through hole at the end of the second limiting groove. Because the two ends of the connecting post are located in the two third frame groups respectively, the two beam frames can maintain the connection state. The tensioning principle and process of the other bridge frame are the same, so it will not be described in detail here. Finally, the two bridge frames after tensioning are placed relatively parallel, and then multiple bridge plates are sequentially engaged on the top surface of the two bridge frames to complete the construction operation.

[0047] When full extension is not required (i.e., simulating a shorter bridge), the approach bridges on one bridge frame are flipped to both sides, with the beginning of one approach bridge frame engaging on the upper surface of the outer shell and the beginning of the other approach bridge frame engaging on the lower surface of the outer shell. This represents the shortest bridge length simulated by this portable bridge simulation device. It is also possible to stretch the two beam frames to both sides separately, pulling the first frame group out of the outer shell. At this time, due to the presence of the connecting column set in the third frame group, the two beam frames can remain connected.

[0048] It can also continue to stretch the two beam frames to both sides, extending only the first frame group out of the shell. Because the limiting blocks at both ends of the connecting rod are in contact with the outer surface of the shell, the connecting rod will move along the groove towards the end of the shell. When the connecting rod reaches the end of the groove, the first support column, under its own weight, flips downward about the connecting rod as the center, so that the outer wall of the first support column contacts one side of the bottom surface of the shell, and the end of the first support column is in contact with the placement plane, and the first support column is relatively perpendicular to the placement plane; at this time, the second support column, under its own weight, flips downward about the limiting connector as the center, and the beginning end of the second support column is in contact with the beginning inner wall of the second bridge, and maintains... Ensure the second support column is perpendicular to the second bridge, with its end aligned with the placement plane and its outer wall close to the first support column. The movement principle and positional relationship of the third frame are the same as the second frame, so they will not be elaborated here. Alternatively, depending on actual usage requirements, the second frame can be partially pulled out, fully pulled out, or the third frame can be partially pulled out. The working principle is the same as described above, so it will not be elaborated here. At this time, the connecting column is located within the two third frames, so the two beam frames can maintain a connected state. Finally, place the two bridge frames after stretching relatively parallel to each other, and then sequentially snap multiple bridge plates onto the top surfaces of the two bridge frames to complete the erection operation.

[0049] During retraction, multiple bridge panels are removed sequentially. Then, one side of the approach bridge frame is lifted to disengage it from the placement surface. By pressing the locking and limiting device, the top of the locking and limiting device is positioned in the slot. At this point, the beam frame is pushed towards the center. Under the action of the thrust, the outer shell moves towards the center. Simultaneously, because the connecting rods at the beginning of the first bridge and the first support column slide in the groove, the sliding principle is compatible with the above, so it will not be elaborated here. The first bridge is pushed into the outer shell, and the first support column flips upward under the thrust of the outer shell, and is then pushed into the outer shell to fit against the bottom surface of the first bridge. Continue... Push the beam frame, and by pressing the locking limit piece, the limiting connector at the beginning of the second bridge and the second support column slides along the first limiting groove, thereby pushing the second bridge into the first frame assembly. Under the thrust of the first frame assembly, the second support column flips upward and is pushed into the first frame assembly to fit against the second bridge. The third frame assembly is retracted in the same way as the second frame assembly. By pressing the sliding limit post, the top of the sliding limit post is positioned inside the connecting post, thereby pushing the connecting post into the third frame assembly. The other beam frame is retracted in the same way. After retraction, it is properly placed and stored.

[0050] The specific operating principle is as follows:

[0051] The first step is to flip the bridge frame to both sides to separate the two fixing slots from the outer shell.

[0052] The second step is to stretch the beams to the required length on both sides and place the ends of the two approach bridges smoothly on the placement surface.

[0053] The third step is to perform the same operation on two cable trays, ensuring that both cable trays are placed horizontally.

[0054] The fourth step is to sequentially attach multiple cable trays to the two cable trays.

[0055] The fifth step is to lay simulated inkjet-printed river patterns under the cable tray, depending on actual usage requirements.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A portable bridge simulation device, characterized in that: The cable trays include two mirror-mounted cable trays, which are connected by multiple interlocking cable plates. The cable tray includes two mirror-arranged beams. Each beam includes a shell, a first frame group, a second frame group, and a third frame group arranged sequentially from the outside to the inside. The two beams are connected by connecting columns arranged in the two third frame groups. The first frame assembly includes a first bridge and a first support column. The beginning end of the first support column is rotatably connected to the beginning end of the first bridge via a connecting rod. A sliding groove is provided on the side wall of the outer shell corresponding to the position of the connecting rod. The two ends of the connecting rod pass through two sliding grooves respectively and are connected to the limiting blocks. The inner walls of the two limiting blocks are in contact with the outer surface of the outer shell. The second frame assembly includes a second bridge and a second support column. The beginning end of the second support column is rotatably connected to the beginning end of the second bridge through a limiting connector. The lower part of the first bridge is provided with a first limiting groove corresponding to the position of the limiting connector. The two ends of the limiting connector are respectively engaged in the two first limiting grooves. The third frame assembly has the same structure as the second frame assembly. Two sliding limit posts are provided at the beginning and end of the connecting post. The four sliding limit posts are arranged symmetrically in pairs. The lower part of the two third bridges is provided with second limit grooves corresponding to the four sliding limit posts. The four sliding limit posts are respectively engaged in the corresponding second limit grooves.

2. The portable bridge simulation device according to claim 1, characterized in that: Both ends of the limiting connector are provided with slots, and each slot is fitted with a locking limiting component. An elastic component is provided between the beginning of each locking limiting component and the end of the corresponding slot. The ends of the two first limiting slots are provided with two fixing through holes corresponding to the two locking limiting components, and each fixing through hole is fitted with a locking limiting component.

3. The portable bridge simulation device according to claim 2, characterized in that: The locking and limiting component includes a base that engages with the inner wall of the slot. A limiting post extends outward from the center of the base, and the diameter of the limiting post is smaller than the diameter of the base. A limiting ring extends inward from the beginning of the slot, and the inner wall of the limiting ring is in contact with the outer surface of the limiting post. The limiting ring and the base form a limiting structure.

4. The portable bridge simulation device according to claim 1, characterized in that: The ends of both outer shells are connected to the beginnings of two guide bridges via rotating rollers. The ends of both guide bridges are provided with fixing grooves, and both guide bridges are engaged with the ends of the outer shells via the corresponding fixing grooves.

5. A portable bridge simulation device according to claim 1, characterized in that: The bottom surface of the second bridge is in contact with the top surface of the second support column, and the diameter of the starting end of the second support column is smaller than the diameter of the starting end of the second bridge. A fixing block is provided extending upward from the starting end of the second support column, and the outer wall of the fixing block is in contact with the inner wall of the starting end of the second support column.

6. A portable bridge simulation device according to claim 2, characterized in that: The elastic component is a spring.

7. A portable bridge simulation device according to claim 2, characterized in that: The limiting connector is a hollow columnar structure.

8. A portable bridge simulation device according to claim 4, characterized in that: Both ends of the bridge approach frames are provided with anti-slip pads, and multiple protrusions are evenly distributed on the outer surface of the anti-slip pads.

9. A portable bridge simulation device according to claim 1, characterized in that: The connecting column is a hollow cuboid structure.

Images