Bridge mechanism for municipal road

Abstract

The application discloses a bridge mechanism for municipal roads, which comprises a main bridge, a vice bridge and an expansion bridge. The main bridge comprises two main bridge plates which are identical in structure and are arranged directly above a damaged road. The vice bridge is installed on both sides of the main bridge to support the main bridge. Along the width direction of the vice bridge, a strip-shaped sliding groove is formed in the upper part of the vice bridge and penetrates through the vice bridge, and limit receiving holes are formed in the bottom of both sides of the strip-shaped sliding groove. The expansion bridge is symmetrically arranged on both sides of the vice bridge and comprises an expansion bridge plate and support columns. The bottom of the expansion bridge plate is fixed with a strip-shaped sliding block matched with the strip-shaped sliding groove, and the strip-shaped sliding block has a support part protruding from the expansion bridge plate on the side close to the vice bridge. A limit pulley matched with the limit receiving hole is installed below the support part. The support columns are fixed to the side of the expansion bridge plate away from the vice bridge and are provided in plurality, so that the bridge mechanism can be extended and contracted in the width direction.

Description

Technical Field

[0001] This invention belongs to the field of road construction technology, and specifically relates to a bridge structure for municipal roads. Background Technology

[0002] Roads often break down at certain points or sections, or when sewers, water pipes, or cables are damaged, or when the road itself cracks. Workers often need to erect barriers at the damaged points before repairing the road. In busy pedestrian areas or areas with a large number of people traveling, especially municipal roads, this often causes a lot of inconvenience to people. When the work takes a long time, the traffic obstruction can cause even greater problems.

[0003] After searching, a temporary bridge that can be driven by vehicles based on bridge construction was found with patent number CN111794079B. This solves the problems of currently used temporary bridges that do not have the function of rapid installation, are inconvenient to move and transport, occupy a large space, and do not have the function of quick folding for storage.

[0004] For narrow roads such as two-lane roads, damage in the middle of the road can severely impact traffic flow. Existing temporary bridge structures, especially wider ones, occupy two or more lanes, making it impossible to operate in a single lane, and are difficult and slow to move. Narrower structures, due to their limited width, allow only one vehicle to pass at a time, reducing traffic efficiency and still causing significant traffic obstruction. Furthermore, current technology does not allow for the widening of individual temporary bridge structures in their width direction. Summary of the Invention

[0005] To address the aforementioned shortcomings, this invention provides a bridge structure for municipal roads. By erecting a bridge structure at the damaged section of the road, vehicles can cross the damaged area, thus alleviating traffic congestion and ensuring smooth traffic flow. Extended bridge frames are slidably installed on both sides of the sub-bridge frame. When retracted, the extended bridge frames reduce the width of the bridge structure, facilitating movement of the sub-bridge frame along the road. This means the sub-bridge frame occupies only the width of one lane when moving, enabling timely delivery to the road fault and faster repair. When the extended bridge frames are extended, the bridge structure allows two vehicles to travel side-by-side, facilitating passage for vehicles in both directions across the damaged section of the road, thus improving traffic efficiency compared to existing bridge structures.

[0006] This invention is achieved through the following technical solution:

[0007] A cable tray structure for municipal roads includes a main cable tray, a secondary cable tray, and an extension cable tray. The main cable tray includes two structurally identical main bridge plates, which are erected directly above the damaged section of the road to support vehicles and facilitate vehicle passage.

[0008] Sub-cable trays are installed on both sides of the main cable tray to support it. A strip-shaped groove running through the top of the sub-cable tray is provided along its width. Limiting holes are located at the bottom of both sides of the strip-shaped groove. Extension cable trays are symmetrically distributed on both sides of the sub-cable tray. Each extension cable tray includes an extension plate and support columns. The extension plate has the same top curvature as the sub-cable tray to facilitate vehicle passage and allow the extension plate to slide and fold onto the top of the sub-cable tray. A strip-shaped slider that mates with the strip-shaped groove is fixed to the bottom of the extension plate. The strip-shaped slider has a support portion protruding from the extension plate on the side closest to the sub-cable tray, which supports the extension plate when the extension cable tray is in the extended state. Limiting pulleys that mate with the limiting holes are installed below the support portion to facilitate the sliding of the strip-shaped slider along the extension direction of the strip-shaped groove. Multiple support columns are fixed to the side of the extension plate away from the sub-cable tray to ensure the stability and firmness of the support for the extension plate.

[0009] The extended cable tray has a retracted state and an extended state. When the extended cable tray is in the retracted state, the extended cable plate is located on top of the sub-cable tray, and the support column is close to the side wall of the sub-cable tray and is suspended in the air. When the extended cable tray is in the extended state, the top surface of the extended cable plate is flush with the top surface of the sub-cable tray, and the bottom end of the support column is pressed to the ground to support the extended cable plate, realizing the extension and retraction of the cable tray mechanism in the width direction.

[0010] Furthermore, the cross-section of the strip groove is convex, which reduces the size of the opening at the top of the strip groove, facilitating the vehicle's movement along the surface of the sub-bridge and preventing the extension bridge from detaching from the sub-bridge during sliding along the extension direction of the strip groove. Mounting openings are provided at both ends of the strip groove to facilitate the installation of the extension bridge's strip slider into the strip groove.

[0011] Furthermore, multiple strip grooves are evenly distributed along the top surface of the sub-cable tray, and the number of strip sliders is the same as the number of strip grooves. The strip sliders can slide along the extension direction of the strip grooves to improve the stability of the connection between the extended cable tray and the sub-cable tray, as well as the stability of the strip sliders when sliding relative to the strip grooves.

[0012] Furthermore, a weight-reduction space is provided inside the sub-cable tray to reduce its overall weight and facilitate its movement. An ejection mechanism is installed within the weight-reduction space, and a sliding push rod is installed within the limiting receiving hole. The sliding push rod can eject the limiting pulley that is embedded in the limiting receiving hole, thereby releasing the restriction on the extended cable tray. The bottom of each sliding push rod is connected and fixed by a connecting plate, which is located above the ejection mechanism and cooperates with it to facilitate the simultaneous ejection of all sliding push rods.

[0013] Furthermore, the limiting pulley and the support are connected and fixed by a limiting block. The limiting block and the limiting receiving hole cooperate with each other to strengthen the limiting effect of the limiting receiving hole and the limiting block, thereby strengthening the limiting effect of the sub-cable tray on the extended cable tray.

[0014] Furthermore, the bottom of the sub-cable tray is embedded with casters to facilitate movement. The casters are mounted to the sub-cable tray via a push rod device, enabling them to be raised and lowered. Bracket rings are fixed to the side walls of the sub-cable tray to facilitate dragging and moving it.

[0015] Furthermore, both the secondary cable tray and the extension cable tray are fixed with support brackets on the side closest to the main cable tray. Both ends of the main cable tray have mounting brackets that mate with the support brackets, enabling the connection between the secondary and extension cable trays and the main cable tray. Limiting posts and limiting rings are also installed on the side walls of the main cable tray. When the extension cable tray is in the extended state, the limiting rings abut against the support brackets of the extension cable tray, preventing the main cable tray from detaching from the support brackets of the extension cable tray and causing the main cable tray to tilt, thus improving the stability of the connection between the main cable tray and the extension cable tray.

[0016] Furthermore, rope loops are installed on both sides of the main bridge deck to facilitate its installation between the two secondary bridge decks. The side walls of the secondary bridge decks are provided with receiving grooves to accommodate the rope loops, reducing the gap between the main bridge deck and the secondary bridge decks.

[0017] Furthermore, the width of the secondary cable tray is less than 3.5m, meaning that the secondary cable tray only occupies one lane for passage, making it easy to move the secondary cable tray.

[0018] Furthermore, the side wall of the secondary cable tray is also equipped with a laser rangefinder and a display screen. The laser rangefinder can measure the distance between the two secondary cable trays. The laser rangefinder and the display screen are connected for data, which facilitates the adjustment of the relative position between the two secondary cable trays, thereby facilitating the installation of the main cable tray and improving the installation speed of the cable tray mechanism. This helps to quickly alleviate traffic congestion caused by road damage.

[0019] The beneficial effects of this invention are:

[0020] 1. By installing this bridge structure at the damaged section of the road, vehicles can pass through the damaged section of the road, reducing the degree of traffic congestion caused by road damage;

[0021] 2. The extended cable tray is slidably retracted to the secondary cable tray, making the cable tray mechanism narrower, which facilitates the transportation of the cable tray mechanism along the road, increases the transportation speed of the cable tray mechanism, and thus speeds up the treatment efficiency of road damage.

[0022] 3. Extend the cable tray along the secondary cable tray to both sides, so that the cable tray mechanism can accommodate two vehicles traveling side by side at the same time, which helps to alleviate traffic congestion and improve the efficiency of the cable tray mechanism for vehicle passage. Attached Figure Description

[0023] Figure 1 A connection diagram illustrating one embodiment of a bridge structure for municipal roads in this invention;

[0024] Figure 2 A schematic diagram illustrating one embodiment of a bridge structure for municipal roads in this invention;

[0025] Figure 3 Used to explain Figure 2 Enlarged view of a portion of point A in the middle;

[0026] Figure 4 A side view illustrating a schematic embodiment of a bridge structure for municipal roads in this invention;

[0027] Figure 5 A schematic diagram illustrating one embodiment of the secondary cable tray and the extended cable tray in this invention;

[0028] Figure 6 A schematic diagram illustrating one embodiment of the present invention in which the extended cable tray is in the deployed state;

[0029] Figure 7 A cross-sectional view illustrating one embodiment of the secondary cable tray and the extension cable tray in this invention;

[0030] Figure 8 Used to explain Figure 7 Enlarged view of a portion of point B in the middle;

[0031] Figure 9 This is a schematic diagram illustrating another illustrative embodiment of the secondary cable tray and the extension cable tray in this invention;

[0032] Figure 10 A schematic diagram illustrating one embodiment of the present invention in which the extended cable tray is in a retracted state;

[0033] Figure 11 Used to explain Figure 10 Enlarged view of a portion of point C in the middle;

[0034] Figure 12 A schematic diagram illustrating one embodiment of the sub-cable tray in this invention;

[0035] Figure 13 A schematic diagram illustrating one embodiment of the extended cable tray in this invention;

[0036] Figure 14 Used to explain Figure 13 Enlarged view of a portion of point D;

[0037] Figure 15 A schematic diagram illustrating one embodiment of the main bridge plate in this invention;

[0038] Figure 16 Used to explain Figure 15 Enlarged view of a portion of point E in the middle;

[0039] Figure 17 This is a schematic diagram illustrating the application state of an exemplary embodiment of a bridge structure for municipal roads in this invention.

[0040] Figure label:

[0041] 1. Main cable tray; 11. Main bridge plate; 111. Limiting post; 112. Limiting swivel ring; 113. Hanging rope ring; 2. Sub-cable tray; 21. Strip slide groove; 22. Limiting receiving hole; 23. Weight reduction space; 231. Ejection mechanism; 24. Sliding push rod; 25. Connecting plate; 26. Moving wheel; 261. Push rod device; 27. Bracket ring; 28. Receiving groove; 29. ​​Laser rangefinder; 291. Display screen; 3. Extension cable tray; 31. Extension bridge plate; 32. Support column; 33. Strip slider; 331. Support part; 332. Limiting pulley; 333. Mounting port; 334. Limiting block; 34. Support bracket. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] It should be noted that the directional terms such as left, right, up, down, front, and back in the embodiments of the present invention are only relative concepts or are based on the normal use state of the product, i.e., the direction of the product's movement, and should not be considered as limiting.

[0044] In addition, it should be noted that the dynamic terms such as "relative motion" mentioned in the embodiments of the present invention refer not only to changes in position, but also to movements such as rotation and rolling in which there is no relative change in position, but the state changes.

[0045] Finally, it should be noted that when a component is said to be "located on" or "set on" another component, it can be on the other component or may have an intervening component at the same time. When a component is said to be "connected to" another component, it can be directly connected to the other component or may have an intervening component at the same time.

[0046] like Figures 1 to 17 The cable tray structure for municipal roads shown includes: a main cable tray 1, a secondary cable tray 2, and an extension cable tray 3. The main cable tray 1 includes two identical main bridge plates 11, which are erected directly above the damaged section of the road to support vehicles and facilitate vehicle passage.

[0047] Sub-cable trays 2 are installed on both sides of the main cable tray 1 to support it. A strip-shaped groove 21, penetrating the top of the sub-cable tray 2 along its width, is provided. Limiting holes 22 are provided at the bottom of both sides of the strip-shaped groove 21. Extension cable trays 3 are symmetrically distributed on both sides of the sub-cable tray 2. Each extension cable tray 3 includes an extension plate 31 and a support column 32. The extension plate 31 has the same top curvature as the sub-cable tray 2 to facilitate vehicle passage and allow the extension plate 31 to slide and fold onto the top of the sub-cable tray 2. A strip-shaped slider 33, cooperating with the strip-shaped groove 21, is fixed to the bottom of the extension plate 31. The strip-shaped slider 33 has a support portion 331 protruding from the extension plate 31 on the side closest to the sub-cable tray 2. This support portion 331 supports the extension plate 31 when the extension cable tray 3 is in the extended state. A limiting pulley 332 that mates with the limiting receiving hole 22 is installed below the support part 331, which facilitates the sliding of the strip slider 33 along the extension direction of the strip groove 21. Multiple support columns 32 are fixed to the side of the extension bridge plate 31 away from the sub-bridge 2 to ensure the stability and firmness of the support for the extension bridge plate 31.

[0048] The extended cable tray 3 has a retracted state and an extended state. When the extended cable tray 3 is in the retracted state, the extended cable plate 31 is located on top of the sub-cable tray 2, and the support column 32 is close to the side wall of the sub-cable tray 2 and is suspended. When the extended cable tray 3 is in the extended state, the top surface of the extended cable plate 31 is flush with the top surface of the sub-cable tray 2, and the bottom end of the support column 32 is pressed to the ground to support the extended cable plate 31, realizing the extension and retraction of the cable tray mechanism in the width direction.

[0049] In one embodiment, when road damage occurs, staff receive information about the road damage and dispatch vehicles to transport the cable tray mechanism. During transport, two main cable trays 11 can be stacked on the transport vehicle, and the extended cable tray 3 can be retracted into the secondary cable tray 2 for transporting both the secondary cable tray 2 and the extended cable tray 3. During transport, because the extended cable tray 3 is in a retracted state, the width of the entire cable tray mechanism does not exceed that of a single lane, facilitating rapid transport by vehicles. Especially for two-way single-lane roads, the width of the cable tray mechanism is particularly important; when the cable tray mechanism is smaller than the width of a single lane, the transport speed can be significantly increased.

[0050] In one embodiment, the road damage is located in the middle of two lanes or simultaneously damages both lanes. After the bridge frame mechanism is transported to the road damage location, the two auxiliary bridge frames 2 are first moved to both sides of the road damage location, and the distance between the two auxiliary bridge frames 2 is accurately measured to facilitate the subsequent installation of the main bridge plate 11. It should be noted that both auxiliary bridge frames 2 are located in the middle of the road, that is, the auxiliary bridge frames 2 are located in the middle of the two lanes. Then, the extension bridge frame 3 is pulled so that the strip slider 33 of the extension bridge plate 31 slides away from the auxiliary bridge frame 2 along the extension direction of the strip groove 21 of the auxiliary bridge frame 2 until the extension bridge plate 31 is detached from the auxiliary bridge frame 2. At this time, the extension bridge plate 31 and the auxiliary bridge frame 2 do not overlap in the vertical direction. It should also be noted that when the strip slider 33 of the extension bridge plate 31 slides along the strip groove 21, since a limiting pulley 332 is installed on the side of the strip slider 33 near the middle of the sub-bridge 2, the strip slider 33 moves along the strip groove 21 through the limiting pulley 332, reducing the frictional resistance of the extension bridge plate 31 when sliding along the sub-bridge 2, and facilitating the sliding of the extension bridge plate 31 relative to the sub-bridge 2. When the extension bridge plate 31 detaches from the sub-bridge 2, since the bottom of the extension bridge plate 31 has a strip slider 33 protruding from the extension bridge plate 31, that is, a support part 331 of the strip slider 33, the side of the extension bridge plate 31 near the sub-bridge 2 is supported by the support part 331. When the extended cable tray 31 just detaches from the sub-cable tray 2, the limiting pulley 332 at the bottom of the support part 331 falls into the limiting receiving hole 22. The bottom of the support part 331 abuts against the bottom of the strip groove 21, causing the entire extended cable tray 3 to descend vertically by a distance equal to the distance the extended cable tray 3 is above the sub-cable tray 2. This distance is also the same as the distance the column is above the ground in the suspended state. It should also be noted that after the limiting pulley 332 falls into the limiting receiving hole 22, the support part 331 abuts against the strip groove 21, forming support for the extended cable tray 31. At the same time, the limiting pulley 332 located in the limiting receiving hole 22 can restrict the strip slider 33 from sliding along the extension direction of the strip groove 21. Therefore, the limiting pulley 332 located in the limiting receiving hole 22 has a limiting effect on the entire extended cable tray 3. At this time, one end of the extended cable tray 31 is connected and fixed to the sub-cable tray 2 through the strip slider 33, and the other end is supported on the ground by the column. After the extension bridge plate 31 is lowered, the top surface of the extension bridge plate 31 is flush with the top surface of the sub-bridge 2, which helps the vehicle to travel on top of the sub-bridge 2 and the extension bridge plate 31.

[0051] Preferably, the cross-section of the strip groove 21 is convex, which reduces the size of the opening at the top of the strip groove 21, facilitating the vehicle's movement along the surface of the sub-bridge 2, and preventing the extension bridge 3 from detaching from the sub-bridge 2 during sliding along the extension direction of the strip groove 21. Mounting openings 333 are provided at both ends of the strip groove 21 to facilitate the installation of the strip slider 33 of the extension bridge 3 into the strip groove 21.

[0052] In one embodiment, the cross-section of the strip groove 21 is convex. This convex design significantly reduces the width of the opening on the top surface of the sub-bridge 2 caused by the strip groove 21. Specifically, compared to a normal rectangular strip groove 21, the convex strip groove 21 has a smaller opening at the top, making it less likely for vehicle wheels to fall into the opening on the surface of the sub-bridge 2, thus reducing the obstruction to vehicle movement caused by the strip groove 21. Secondly, the strip slider 33 also has a convex structure that cooperates with the strip groove 21, which helps prevent the strip slider 33 from accidentally detaching from the strip groove 21 when sliding horizontally along it.

[0053] In one embodiment, when disassembling, repairing, or replacing the extension cable tray 3, the convex cross-section of the strip groove 21 makes it difficult to align the strip slider 33 of the extension cable tray 3 horizontally with the strip groove 21 during installation. This is challenging because the convex shape of the strip slider 33 makes it difficult to align with the strip groove 21, requiring both vertical height and horizontal position of the strip slider 33 to be maintained. By providing mounting openings 333 at both ends of the strip groove 21, the installation of the strip slider 33 can be achieved simply by ensuring its horizontal position. The strip slider 33 is then placed downwards into the mounting opening 333. Since the mounting opening 333 has the same width as the strip groove 21, the strip slider 33 falls into the strip groove 21 under gravity. Pushing the extension cable tray 3 horizontally towards the sub-cable tray 2 then pushes the strip slider 33 of the extension cable tray 3 into the strip groove 21, making the process convenient and quick.

[0054] Preferably, multiple strip grooves 21 are evenly distributed along the top surface of the sub-cable tray 2, and the number of strip sliders 33 is the same as that of strip grooves 21. The strip sliders 33 can slide along the extension direction of the strip grooves 21 to improve the stability of the connection between the extended cable tray 3 and the sub-cable tray 2, as well as the stability of the strip sliders 33 when sliding relative to the strip grooves 21.

[0055] In one embodiment, multiple strip grooves 21 are formed on the surface of the sub-bridge 2, and multiple strip sliders 33 are fixed at the bottom of the extended bridge plate 31 accordingly. The strip sliders 33 correspond one-to-one with the strip grooves 21, which helps to increase the stability of the connection between the extended bridge plate 31 and the sub-bridge 2. At the same time, when the extended bridge 3 is in the unfolded state, the sub-bridge 2 provides stable support for the extended bridge plate 31, thereby improving the safety of the vehicle when driving on the extended bridge plate 31.

[0056] Preferably, the sub-cable tray 2 has a weight-reducing space 23 inside to reduce the overall weight of the sub-cable tray 2 and facilitate its movement. An ejection mechanism 231 is installed within the weight-reducing space 23, and a sliding push rod 24 is installed within the limiting receiving hole 22. The sliding push rod 24 can eject the limiting pulley 332 that is embedded in the limiting receiving hole 22, thereby releasing the restriction on the extended cable tray 3. The bottom of each sliding push rod 24 is connected and fixed by a connecting plate 25. The connecting plate 25 is located above the ejection mechanism 231 and cooperates with the ejection mechanism 231 to facilitate the simultaneous ejection of each sliding push rod 24.

[0057] In one embodiment, by creating a weight-reducing space 23 inside the sub-cable tray 2, the overall weight of the sub-cable tray 2 is greatly reduced, which helps to move the sub-cable tray 2 and improves the portability of the sub-cable tray 2.

[0058] In one embodiment, after the cable tray mechanism is used, the extended cable tray 3 needs to be adjusted to the retracted state to facilitate its removal. When the extended cable tray 3 changes from the extended state to the retracted state, the limiting pulley 332 of the strip slider 33 at the bottom of the extended cable tray 3 falls into the limiting receiving hole 22. It is necessary to push the extended bridge plate 31 upward to move the limiting pulley 332 upward to move it out of the limiting receiving hole 22. Manually pushing the extended bridge plate 31 upward is time-consuming and laborious. Therefore, a sliding push rod 24 is provided in the limiting receiving hole 22. The sliding push rod 24 moves vertically upward along the limiting receiving hole 22 to push the limiting pulley 332 out of the limiting receiving hole 22. Specifically, to ensure that the sliding push rods 24 in each limiting receiving hole 22 can move upward synchronously, a connecting plate 25 is provided at the bottom of the sliding push rods 24. The sliding push rods 24 are connected together through the connecting plate 25, and an ejection mechanism 231 is installed at the bottom of the connecting plate 25. The ejection mechanism 231 pushes the connecting plate 25 upward, so that the sliding push rods 24 can move upward synchronously, thereby ejecting all the limiting pulleys 332 located in the limiting receiving hole 22 at the same time. Then, by pushing the extension cable tray 3 towards the sub-cable tray 2, the extension cable tray 3 can be adjusted from the unfolded state to the retracted state.

[0059] Preferably, the limiting pulley 332 and the support part 331 are connected and fixed by the limiting block 334. The limiting block 334 and the limiting receiving hole 22 cooperate with each other to strengthen the limiting effect of the limiting receiving hole 22 and the limiting block 334, thereby strengthening the limiting effect of the sub-cable tray 2 on the extension cable tray 3.

[0060] In one embodiment, because the limiting receiving hole 22 is square and three-dimensional, and the limiting pulley 332 is cylindrical, a large gap is created between the limiting pulley 332 and the limiting receiving hole 22 after the limiting pulley 332 falls into the limiting receiving hole 22. Moreover, the connection strength between the limiting pulley 332 and the support part 331 is low. Using only the limiting pulley 332 to limit the position of the expansion cable tray 3 can easily cause the expansion cable tray 3 to shake, and the safety is not high. A limiting block 334 is provided between the limiting pulley 332 and the support part 331. The shape of the limiting block 334 is consistent with the shape of the limiting receiving hole 22. When the limiting pulley 332 falls into the limiting receiving hole 22, a slight movement of the expansion cable tray 3 will cause the limiting block 334 to also fall into the limiting receiving hole 22, which greatly enhances the limiting effect of the limiting block 334 on the expansion cable tray 3.

[0061] Preferably, the bottom of the sub-cable tray 2 is embedded with casters 26 to facilitate movement of the sub-cable tray 2. The casters 26 are mounted to the sub-cable tray 2 via push rod devices 261 to achieve lifting and lowering of the casters 26. A bracket ring 27 is fixedly installed on the side wall of the sub-cable tray 2 to facilitate dragging and moving the sub-cable tray 2.

[0062] In one embodiment, when the sub-bridge 2 needs to be moved, the push rod device 261 pushes the moving wheel 26 downward, causing the moving wheel 26 to protrude downward from the bottom of the sub-bridge 2, thus supporting the sub-bridge 2. Then, the transport vehicle is connected to the bracket ring 27 via a rope to pull the sub-bridge 2. When the sub-bridge 2 moves to the damaged area of ​​the road, the push rod device 261 retracts, and the moving wheel 26 retracts upward into the sub-bridge 2, so that the bottom of the sub-bridge 2 is in direct contact with the ground, ensuring the stability of the sub-bridge 2 support.

[0063] Preferably, both the secondary cable tray 2 and the extension cable tray 3 are fixed with support brackets 34 on the side near the main cable tray 1. Both ends of the main cable plate 11 have mounting brackets that cooperate with the support brackets 34, realizing the connection between the secondary cable tray 2 and the extension cable tray 3 and the main cable plate 11. The side wall of the main cable plate 11 is also equipped with a limit post 111 and a limit ring 112. When the extension cable tray 3 is in the extended state, the limit ring 112 abuts against the support brackets 34 of the extension cable tray 3, preventing the main cable plate 11 from detaching from the support brackets 34 of the extension cable tray 3 and causing the main cable plate 11 to tilt, thereby improving the stability of the connection between the main cable plate 11 and the extension cable tray 3.

[0064] In one embodiment, when the main bridge plate 11 is installed to the sub-bridge 2 and the extension bridge 3, the two main bridge plates 11 are respectively installed between the two sub-bridges 2, and each main bridge plate 11 is in contact with the support bracket 34 of the sub-bridge 2 and the extension bridge 3. After installation, the limiting rotating ring 112 rotates around the axis of the limiting post 111. Under the action of gravity, the limiting rotating ring 112 is in a drooping state. Since the limiting rotating ring 112 abuts against the side wall of the support bracket 34 of the extension bridge 3, it can prevent the main bridge plate 11 from shifting towards the center of the sub-bridge 2 and causing the main bridge plate 11 to detach from the support bracket 34 of the extension bridge 3, thus avoiding accidents.

[0065] Preferably, the main bridge plate 11 is equipped with rope loops 113 on both sides to facilitate the installation of the main bridge plate 11 between the two auxiliary bridge frames 2. The side wall of the auxiliary bridge frame 2 is provided with receiving grooves 28 to accommodate the rope loops 113, thereby reducing the gap between the main bridge plate 11 and the auxiliary bridge frame 2.

[0066] In one embodiment, since the two secondary bridge frames 2 are located on both sides of the road damage, it is difficult to install the main bridge plate 11 between the two secondary bridge frames 2. Construction workers can connect the four corners of the main bridge plate 11 with ropes, that is, connect the hanging rope rings 113 with ropes, so as to pull the suspended main bridge plate 11 between the two secondary bridge frames 2 to realize the installation of the main bridge plate 11.

[0067] It should be noted that a receiving groove 28 for accommodating the hanging rope ring 113 is provided on the side wall of the sub-bridge 2, so as to avoid the hanging rope ring 113 affecting the abutment assembly of the main bridge plate 11 and the sub-bridge 2.

[0068] Preferably, the width of the secondary cable tray 2 is less than 3.5m, meaning that the secondary cable tray 2 only occupies one lane for passage, which facilitates the movement of the secondary cable tray 2.

[0069] Preferably, the side wall of the sub-bridge 2 is also provided with a laser rangefinder 29 and a display screen 291. The laser rangefinder 29 can measure the distance between the two sub-bridges 2. The laser rangefinder 29 and the display screen 291 are connected for data, which facilitates the adjustment of the relative position between the two sub-bridges 2, thereby facilitating the installation of the main bridge plate 11, improving the installation speed of the bridge structure, and helping to quickly alleviate traffic congestion caused by road damage.

[0070] In one embodiment, the length of the main bridge plate 11 is a fixed value. When installing the cable tray mechanism, it is necessary to first adjust the relative positions of the two auxiliary cable trays 2, that is, to adjust the distance between the two auxiliary cable trays 2. Installing a laser rangefinder 29 on the side wall of the auxiliary cable tray 2 can quickly measure the distance data between the two auxiliary cable trays 2, and can display the measured distance data in real time on the display screen 291, which helps the construction personnel to adjust the position of the two auxiliary cable trays 2 and improves the installation efficiency of the cable tray mechanism.

[0071] When the aforementioned bridge structure for municipal roads is used, the bridge structure is erected at the damaged section of the road, allowing vehicles to cross the damaged area, thus alleviating traffic congestion and ensuring smooth traffic flow. By sliding extension bridges 3 on both sides of the sub-bridge 2 and retracting them to their retracted state, the width of the bridge structure is reduced, facilitating the movement of the sub-bridge 2 along the road. This means the sub-bridge 2 occupies only the width of one lane when moving, helping to transport it to the road fault location more quickly and address the problem more rapidly. By extending the extension bridges 3 to their extended state, the bridge structure allows two vehicles to travel side-by-side simultaneously, facilitating the passage of vehicles in both directions through the damaged section of the road, thus improving traffic efficiency compared to existing bridge structures.

[0072] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A cable tray mechanism for municipal roads, characterized in that, include: The main cable tray includes two identical main bridge plates, which are erected directly above the damaged section of the road. A secondary cable tray is installed on both sides of the main cable tray to support the main cable tray. Along the width direction of the secondary cable tray, a strip-shaped groove is provided on the upper part of the secondary cable tray, and limit receiving holes are provided at the bottom of both sides of the strip-shaped groove. An extension cable tray is symmetrically distributed on both sides of the sub-cable tray. The extension cable tray includes an extension plate and support columns. The top curvature of the extension plate is the same as that of the sub-cable tray. A strip slider that mates with the strip groove is fixed at the bottom of the extension plate. The strip slider has a support portion protruding from the extension plate on the side near the sub-cable tray. A limiting pulley that mates with the limiting receiving hole is installed below the support portion. Multiple support columns are fixed to the side of the extension plate away from the sub-cable tray. The extension cable tray has a retracted state and an extended state. When the extension cable tray is in the retracted state, the extension plate is located at the top of the sub-cable tray, and the support columns are close to the side wall of the sub-cable tray and are suspended. When the extended cable tray is in the extended state, the top surface of the extended cable tray is flush with the top surface of the sub-cable tray, and the bottom end of the support column is pressed against the ground to support the extended cable tray.

2. The cable tray mechanism for municipal roads according to claim 1, characterized in that, The cross-section of the strip groove is convex, and mounting ports are provided at both ends of the strip groove.

3. The cable tray mechanism for municipal roads according to claim 1, characterized in that, The strip grooves are evenly distributed along the top surface of the sub-bridge, and the number of strip sliders is the same as the number of strip grooves, and the strip sliders can slide along the extension direction of the strip grooves.

4. A bridge structure for municipal roads according to claim 3, characterized in that, The sub-bridge has a weight-reduction space inside, and an ejection mechanism is installed in the weight-reduction space. A sliding push rod is installed in the limiting and receiving hole. The bottom of each sliding push rod is connected and fixed by a connecting plate. The connecting plate is located above the ejection mechanism and cooperates with the ejection mechanism.

5. A bridge structure for municipal roads according to claim 1, characterized in that, The limiting pulley and the support are connected and fixed by a limiting block, and the limiting block and the limiting receiving hole cooperate with each other.

6. A cable tray mechanism for municipal roads according to claim 1, characterized in that, The bottom of the sub-cable tray is embedded with a movable wheel, which is installed to the sub-cable tray via a push rod device. A bracket ring is installed and fixed on the side wall of the sub-cable tray.

7. A cable tray mechanism for municipal roads according to claim 1, characterized in that, Both the secondary cable tray and the extended cable tray are fixed with support brackets on the side near the main cable tray. Both ends of the main cable tray have mounting brackets that cooperate with the support brackets. The side wall of the main cable tray is also equipped with limit posts and limit rings. When the extended cable tray is in the extended state, the limit rings abut against the support brackets of the extended cable tray.

8. A cable tray mechanism for municipal roads according to claim 1, characterized in that, The main bridge plate is equipped with rope rings on both sides, and the side wall of the sub-bridge is provided with a receiving groove to accommodate the rope rings.

9. A cable tray mechanism for municipal roads according to claim 1, characterized in that, The width of the sub-cable tray is less than 3.5m.

10. A bridge structure for municipal roads according to claim 1, characterized in that, The side wall of the sub-cable tray is also equipped with a laser rangefinder and a display screen. The laser rangefinder is capable of measuring the distance between the two sub-cable trays, and the laser rangefinder and the display screen are connected for data transfer.

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