Method for synchronous erection of double-layer bridge deck

Abstract

The application discloses a kind of double-layer bridge plate synchronous erecting method, belong to the technical field of beam plate erecting, it includes following specific steps: S1, after the initial beam plate of bridge pier and two layers is set up, two bridge devices are moved to the beam plate of two sides after setting up respectively;S2, two bridge devices are fixed between the beam plate of setting up completion and the support beam body of next to be set up bridge pier in turn;S3, the precast beam plate to be set up is transported to the location of two bridge devices in turn;S4, precast beam plate is hoisted to the support beam body of adjacent two bridge piers;S5, bridge erecting device is horizontally moved along the width direction of bridge pier, and precast beam plate is set up to required width in turn;S6, after the precast beam plate of two layers is set up in turn by the lifting crane of two bridge devices, repeat steps S2-S5;S7, the erection of precast beam plate is completed.The application has the effect of facilitating synchronous implementation to the setting up of the precast beam plate of double-layer bridge upper and lower two layers, improve the working efficiency when precast beam plate is installed.

Description

Technical Field

[0001] This invention relates to the field of beam and slab erection, and in particular to a method for the simultaneous erection of double-layer bridge slabs. Background Technology

[0002] A double-deck bridge is a type of bridge construction with two independent spans, typically used to cross long bodies of water, rivers, lakes, or canals. The design of double-deck bridges usually takes into account factors such as traffic flow, terrain conditions, and geological environment to ensure the bridge's safety, stability, and comfort.

[0003] In the prior art, double-deck bridges typically include piers 01 and beams 02. Piers 01 are provided with two vertically distributed and horizontally arranged supporting beams 03. The beams 02 are usually precast components. During the construction of double-deck bridges, two cranes are generally used to lift and coordinate the precast beams 02 to erect them sequentially on the supporting beams 03 of the two adjacent piers 01.

[0004] Regarding the existing technology mentioned above, when using two cranes to lift beams, in order to avoid interference between the upper and lower layers of beams during installation, it is usually necessary to place one precast beam on the bottom support beam before placing the other precast beam on the top support beam. This makes it difficult to install the upper and lower layers of precast beams simultaneously, resulting in low work efficiency. Summary of the Invention

[0005] To facilitate the simultaneous erection of the upper and lower layers of precast beams for double-deck bridges and improve the work efficiency during precast beam installation, this application provides a method for the synchronous erection of double-deck bridge slabs.

[0006] The method for synchronous erection of double-layer bridge decks provided in this application adopts the following technical solution:

[0007] A method for synchronously erecting double-layer bridge slabs includes the following steps: S1, after the piers and the initial beam slabs of the two layers are erected, the two bridge erection devices are moved to the erected beam slabs on both sides respectively; S2, the two bridge erection devices are fixed sequentially between the erected beam slabs and the supporting beam of the next pier to be erected; S3, the precast beam slabs to be erected are sequentially transported to the positions of the two bridge erection devices; S4, the precast beam slabs are hoisted to the supporting beams of the two adjacent piers by a crane installed on the bridge erection device; S5, the bridge erection device is moved horizontally along the width direction of the pier, and steps S3 and S4 are repeated to erect the precast beam slabs to the required width sequentially; S6, after the two layers of precast beam slabs are erected sequentially by the crane of the two bridge erection devices, steps S2 to S5 are repeated; S7, when the supporting beams of each of the two adjacent piers are all equipped with precast beam slabs and the precast beam slabs are erected to the required width, the erection of the precast beam slabs is completed.

[0008] By adopting the above technical solution, the precast beams of the double-deck bridge can be erected by a bridge-building device that fixes each layer to the next pier in sequence, eliminating the need for cranes to lift the precast beams. This reduces the likelihood of interference between the upper and lower layers of precast beams during installation, facilitating the simultaneous erection of both layers and improving work efficiency. Furthermore, since no crane is required during the erection of the precast beams, there is no need to consider whether the terrain on both sides of the bridge is flat enough for crane movement, making it adaptable to different terrain conditions and highly versatile.

[0009] Optionally, the bridging device in S1 includes a bridging body, a hoisting trolley, and a support mechanism. Two hoisting trolleys are arranged along the length of the bridging body, and both hoisting trolleys slide in cooperation with the bridging body. The support mechanism includes sliding legs and supporting legs, which are distributed along the length of the bridging body and slide in cooperation with it. The sliding legs and supporting legs are used to support the bridging body.

[0010] By adopting the above technical solution, the two overhead cranes can easily achieve stable hoisting and transportation of precast beams and slabs. The sliding legs and supporting legs are designed to slide and cooperate along the length of the bridge body, which facilitates stable support of the bridge body at different positions. That is, after the bridge body is moved, the stable support of the bridge body can be achieved by adjusting the position of the sliding legs and supporting legs, which has strong applicability.

[0011] Optionally, the sliding outrigger includes a sliding seat and an outrigger portion. The sliding seat slides along the length of the bridge body and engages with the bridge body. The outrigger portion slides vertically and engages with the sliding seat. The sliding seat is provided with a lifting assembly for driving the outrigger portion to slide vertically. The lifting assembly includes a lifting rack, a lifting gear, and a rotating component. The lifting rack is vertically fixed to the outrigger portion. The lifting gear is rotatably mounted on the sliding seat and meshes with the lifting rack. The rotating component drives the lifting gear to rotate.

[0012] By adopting the above technical solution, when the rotating component drives the lifting gear to rotate, the lifting rack, due to its meshing with the lifting gear, drives the outrigger to move vertically. The vertical movement of the outrigger can be achieved by rotating the lifting gear, which is convenient and fast. It is convenient to quickly support the bridge body after the sliding outrigger moves to the designated position, or to cancel the support of the bridge body by moving the outrigger vertically to facilitate the movement of the bridge body.

[0013] Optionally, the rotating component includes a lifting motor, a lifting worm gear, and a lifting worm. The lifting worm gear is coaxially fixedly mounted on the lifting gear, and the lifting worm is rotatably mounted on the sliding seat and meshes with the lifting worm gear. The lifting motor is mounted on the sliding seat and is used to drive the lifting worm to rotate.

[0014] By adopting the above technical solution, when the lifting motor drives the lifting worm to rotate, the lifting worm wheel drives the lifting gear to rotate together. The self-locking effect between the lifting worm wheel and the lifting worm helps to ensure the stability of the outrigger's position after it moves in the vertical direction.

[0015] Optionally, the lifting rack and lifting gear are provided in two sets, with the two sets of lifting rack and lifting gear located on opposite sides of the support leg. Each set of lifting gears is coaxially fixedly mounted with a first bevel gear. The sliding seat is rotatably mounted with a horizontally arranged transmission rod, and the transmission rod is coaxially fixedly mounted with two second bevel gears, which mesh with the two first bevel gears respectively.

[0016] By adopting the above technical solution, the arrangement of two sets of lifting racks and lifting gears facilitates further limiting of the outriggers when they move in the vertical direction, which helps to further ensure the stability of the outriggers when they move in the vertical direction. At the same time, when one set of lifting gears rotates, the other set of lifting gears rotates synchronously through the cooperation of the first bevel gear and the second bevel gear, without the need for an additional drive source, making operation simple.

[0017] Optionally, the sliding seat is provided with a reinforcement component, which includes a reinforcement plate and a driving member. There are two reinforcement plates, which are respectively located on both sides of the leg in the horizontal direction. The driving member is used to drive the two reinforcement plates to move in a direction that is closer to or further away from each other.

[0018] By adopting the above technical solution, after the outrigger moves in the vertical direction, the two reinforcing plates are driven by the driving component to move closer to each other to clamp the outrigger and further limit its position. This helps to further ensure the stability of the outrigger's position after it moves in the vertical direction.

[0019] Optionally, the driving component includes a driving telescopic cylinder, a driving rod, a driving connecting rod, and a reinforcing guide rail. The reinforcing guide rail is horizontally installed on the sliding seat and passes through two reinforcing plates, slidingly engaging with the two reinforcing plates. Two driving connecting rods are provided, with one end of each driving connecting rod rotatably installed on the two reinforcing plates and the other end rotatably installed on the driving rod. The driving telescopic cylinder is installed on the sliding seat and is used to drive the driving rod to move towards or away from the outrigger.

[0020] By adopting the above technical solution, when the drive cylinder drives the drive rod to move, the drive rod drives the two reinforcing plates to move towards or away from each other through the two drive linkages. The reinforcing guide rail plays a limiting role in the movement of the two reinforcing plates, which helps to fully ensure the stability of the two reinforcing plates during movement. The setting of the drive cylinder makes it convenient and quick to fix or release the outriggers by moving the two reinforcing plates towards or away from each other.

[0021] Optionally, the top of the supporting beam of the pier is horizontally provided with an I-beam guide rail extending along its own length. The I-beam guide rail includes a top plate. The bottom of the support leg is provided with a sliding groove that engages with the top plate. A rolling assembly is provided in the sliding groove. The rolling assembly includes a rolling seat, a roller, and a moving part. The roller is rotatably mounted on the top of the rolling seat. The moving part is used to drive the rolling seat to move obliquely toward or away from the top plate.

[0022] By adopting the above technical solution, the sliding guide rail plays a limiting role in the horizontal movement of the bridge erecting device along the width direction of the pier, which helps to ensure the stability of the overall movement of the bridge erecting device. At the same time, the cooperation between the roller and the I-beam guide rail helps to ensure the stability of the sliding between the support part and the I-beam guide rail. The setting of the moving part driving the rolling seat to move obliquely towards or away from the top plate makes it less likely for the roller to interfere with the I-beam guide rail during installation.

[0023] Optionally, the moving component includes a motion motor, a motion base, a motion lead screw, a motion slide, a motion rotating block, and a motion drive block. The motion base is fixedly installed on the support leg and has an inclined motion groove. The motion slide slides into the motion groove, and the rolling seat is fixedly installed on the motion slide. The motion slide has a limit groove. The motion drive block is rotatably installed on the motion slide and located within the limit groove. The motion lead screw passes through the motion drive block and rotatably engages with it. The motion motor is installed on the motion drive block and drives the motion lead screw to rotate. The motion rotating block is rotatably installed on the motion base, and the motion lead screw passes through the motion rotating block and threadedly engages with it.

[0024] By adopting the above technical solution, when the motion motor drives the motion screw to rotate, the motion screw, due to its threaded engagement with the motion rotating block, drives the motion slide and the rolling block together to move obliquely along the motion slide groove towards or away from the top plate, which is convenient and stable.

[0025] Optionally, both the motion drive block and the motion rotating block have an arc-shaped surface on the side that is close to each other.

[0026] By adopting the above technical solution, the arc-shaped surface design makes it less likely for the motion drive block and the motion slide block to experience wear due to friction between the edges and other components when the motion drive block and the motion rotating block rotate slightly. This helps to ensure the overall service life of the rolling assembly.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. During the erection of the precast beams of the double-deck bridge, each layer can be fixed to the next pier in sequence using a bridge erection device, without the need for a crane to lift the precast beams. This reduces the likelihood of interference between the upper and lower layers of precast beams during installation, facilitates the simultaneous erection of the upper and lower layers of beams, and improves the efficiency of precast beam installation.

[0029] 2. The two overhead cranes facilitate the stable hoisting and transportation of precast beams and slabs. The sliding legs and support legs, which slide and cooperate along the length of the bridge body, facilitate stable support of the bridge body at different positions. That is, after the bridge body is moved, the position of the sliding legs and support legs can be adjusted to achieve stable support of the bridge body, which is highly applicable.

[0030] 3. When the rotating component drives the lifting gear to rotate, the lifting rack, due to its meshing with the lifting gear, drives the outrigger to move vertically. The vertical movement of the outrigger can be achieved by rotating the lifting gear, which is convenient and fast. It is convenient to quickly support the bridge body after the sliding outrigger moves to the designated position, or to cancel the support of the bridge body by moving the outrigger vertically to facilitate the movement of the bridge body. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0032] Figure 2 This is a schematic diagram of the main structure of the lifting component in Embodiment 1 of this application.

[0033] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this application.

[0034] Figure 4 This is a schematic diagram of the connection relationship between the support leg and the I-beam in Embodiment 2 of this application.

[0035] Figure 5 This is a schematic diagram of the internal structure of the sliding seat in Embodiment 2 of this application.

[0036] Figure 6 This is a partial cross-sectional view of the bottom of the support leg in Embodiment 2 of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Bridge body; 2. Hoisting trolley; 3. Sliding outriggers; 301. Sliding seat; 302. Outrigger section; 4. Supporting outriggers; 401. Support seat; 402. Hydraulic jack; 5. Lifting rack; 6. Lifting gear; 7. Lifting motor; 8. Lifting worm gear; 9. Lifting worm; 10. First bevel gear; 11. Transmission rod; 12. Second bevel gear; 13. Reinforcing plate; 14. Drive telescopic cylinder; 15. Drive rod; 16. Drive connecting rod; 17. 18. Reinforced guide rail; 18. I-beam guide rail; 181. Top plate; 182. Web plate; 183. Bottom plate; 19. Sliding groove; 20. Mounting groove; 21. Rolling seat; 22. Roller; 23. Motion motor; 24. Motion base; 25. Motion screw; 26. Motion slide; 27. Motion rotating block; 28. Motion drive block; 29. ​​Motion slide groove; 30. Limiting groove; 31. Lifting jack; 32. Fixed pin; 33. Fixed hole. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0040] This application discloses a method for synchronously erecting double-layer bridge decks.

[0041] Example 1.

[0042] The specific steps for the method of synchronous erection of double-layer bridge decks are as follows: S1, after the bridge piers and the initial beams of the two layers are erected, the two bridge erection devices are moved to the erected beams on both sides respectively.

[0043] S2, fix the two bridge assemblies sequentially between the erected beam and the supporting beam of the next pier to be erected.

[0044] S3, the precast beams to be erected are transported sequentially to the locations of the two bridge-building devices. Specifically, the precast beams to be erected are transported sequentially by a beam transport vehicle.

[0045] S4, the precast beam slab is hoisted to the supporting beam of the two adjacent piers by the hoisting crane 2 set on the bridge erection device. Specifically, there are two hoisting cranes 2 to fully ensure the stability of the precast beam slab when it is hoisted to the required position.

[0046] S5, move the bridge erection device horizontally along the width direction of the pier, and repeat steps S3 and S4 to erect the precast beams to the required width in sequence. Specifically, the bridge erection device is driven by a winch to move horizontally along the width direction of the pier.

[0047] S6. After the two layers of precast beams and slabs are erected by the hoisting crane 2 of the two bridge devices, repeat steps S2 to S5.

[0048] S7. When the supporting beams of each pair of adjacent piers are all equipped with precast beams and the precast beams are erected to the required width, the erection of the precast beams is completed.

[0049] Reference Figure 1 The bridge erection device in S1 specifically includes a bridge erection body 1, a hoisting trolley 2, and a support mechanism. There are two hoisting trolleys 2, which are distributed along the length of the bridge erection body 1. Both hoisting trolleys 2 are located on the top of the bridge erection body 1 and slide in cooperation with the bridge erection body 1. After the two hoisting trolleys 2 hoist the precast beams and slide them along the length of the bridge erection body 1 to the designated position by the drive of the winch, the precast beams can be lowered to realize the erection and assembly of the precast beams.

[0050] Continue to refer to Figure 1 The support mechanism includes sliding legs 3 and supporting legs 4. Both sliding legs 3 and supporting legs 4 slide along the length of the bridge body 1 and are fitted to the bottom of the bridge body 1 so that the sliding legs 3 and supporting legs 4 can support the bridge body 1. At the same time, the relative movement between the sliding legs 3 and supporting legs 4 and the bridge body 1 is achieved through alternating support, which facilitates the erection and fixation of the bridge body 1 between the erected beam and the supporting beam of the next pier to be erected.

[0051] Reference Figure 1 and Figure 2 In this embodiment of the application, two sets of sliding legs 3 and supporting legs 4 are provided. Each set of sliding legs 3 and supporting legs 4 has two sets along the width direction of the pier. The two sets of sliding legs 3 are located between the two sets of supporting legs 4. The supporting leg 4 includes a support seat 401 and a hydraulic jack 402. The support seat 401 slides along the length direction of the bridge body 1 and is fitted to the bottom of the bridge body 1. The hydraulic jack 402 is fixedly installed at the bottom of the support seat 401 so that the supporting leg 4 can ultimately support or not support the bridge body 1 by driving the movement of its own piston rod.

[0052] Reference Figure 2 The sliding support leg 3 includes a sliding seat 301 and a support leg 302. The sliding seat 301 slides along the length of the bridge body 1 and is fitted to the bridge body 1. The support leg 302 has a rectangular cross-section and is inserted vertically and slidably fitted to the sliding seat 301. The sliding seat 301 is provided with a lifting assembly that drives the support leg 302 to slide vertically, so that the support leg 302 can support or not support the bridge body 1.

[0053] Continue to refer to Figure 2Specifically, the lifting assembly includes a lifting jack 31 and a fixing pin 32. The cylinder of the lifting jack 31 is vertically fixed to the bottom of the sliding seat 301. The support leg 302 has multiple fixing holes 33 distributed vertically on the side near the lifting jack 31. The fixing pin 32 is horizontally inserted and threaded into the piston rod of the lifting jack 31. When the fixing pin 32 is inserted into one of the fixing holes 33, the piston rod of the lifting jack 31 is fixed to the support leg 302. This allows the support leg 302 to move vertically when the lifting jack 31 drives its piston rod. This is convenient and quick, and allows the support of the bridge frame 1 to be quickly achieved after the sliding support leg 3 moves to the designated position. Alternatively, the support of the bridge frame 1 by the sliding support leg 3 can be removed when the bridge frame 1 needs to be moved.

[0054] Example 2.

[0055] The specific steps of the method for synchronous erection of double-layer bridge slabs in this application embodiment are as follows: S1, after the bridge piers and the initial beams of the two layers are erected, the two bridge erection devices are moved to the erected beams on both sides respectively.

[0056] S2, fix the two bridge assemblies sequentially between the erected beam and the supporting beam of the next pier to be erected.

[0057] S3, the precast beams to be erected are transported sequentially to the locations of the two bridge-building devices. Specifically, the precast beams to be erected are transported sequentially by a beam transport vehicle.

[0058] S4, the precast beam slab is hoisted to the supporting beam of the two adjacent piers by the hoisting crane 2 set on the bridge erection device. Specifically, there are two hoisting cranes 2 to fully ensure the stability of the precast beam slab when it is hoisted to the required position.

[0059] S5, move the bridge erection device horizontally along the width direction of the pier, and repeat steps S3 and S4 to erect the precast beams to the required width in sequence. Specifically, the bridge erection device is driven by a winch to move horizontally along the width direction of the pier.

[0060] S6. After the two layers of precast beams and slabs are erected by the hoisting crane 2 of the two bridge devices, repeat steps S2 to S5.

[0061] S7. When the supporting beams of each pair of adjacent piers are all equipped with precast beams and the precast beams are erected to the required width, the erection of the precast beams is completed.

[0062] Reference Figure 3The bridge erection device in S1 specifically includes a bridge erection body 1, a hoisting trolley 2, and a support mechanism. There are two hoisting trolleys 2, which are distributed along the length of the bridge erection body 1. Both hoisting trolleys 2 are located on the top of the bridge erection body 1 and slide in cooperation with the bridge erection body 1. After the two hoisting trolleys 2 hoist the precast beams and slide them along the length of the bridge erection body 1 to the designated position by the drive of the winch, the precast beams can be lowered to realize the erection and assembly of the precast beams.

[0063] Reference Figure 3 and Figure 4 The support mechanism includes sliding legs 3 and supporting legs 4. Both sliding legs 3 and supporting legs 4 slide along the length of the bridge body 1 and are fitted to the bottom of the bridge body 1 so that the sliding legs 3 and supporting legs 4 can support the bridge body 1. At the same time, the relative movement between the sliding legs 3 and supporting legs 4 and the bridge body 1 is achieved through alternating support, which facilitates the erection and fixation of the bridge body 1 between the erected beam and the supporting beam of the next pier to be erected.

[0064] Continue to refer to Figure 3 and Figure 4 In this embodiment of the application, two sets of sliding legs 3 and supporting legs 4 are provided. Each set of sliding legs 3 and supporting legs 4 has two sets along the width direction of the pier. The two sets of sliding legs 3 are located between the two sets of supporting legs 4. The supporting leg 4 includes a support seat 401 and a hydraulic jack 402. The support seat 401 slides along the length direction of the bridge body 1 and is fitted to the bottom of the bridge body 1. The hydraulic jack 402 is fixedly installed at the bottom of the support seat 401 so that the supporting leg 4 can ultimately support or not support the bridge body 1 by driving the movement of its own piston rod.

[0065] Reference Figure 3 and Figure 5 The sliding support leg 3 includes a sliding seat 301 and a support leg 302. The sliding seat 301 slides along the length of the bridge body 1 and is fitted to the bridge body 1. The support leg 302 has a rectangular cross-section and is inserted vertically and slidably fitted to the sliding seat 301. The sliding seat 301 is provided with a lifting assembly that drives the support leg 302 to slide vertically, so that the support leg 302 can support or not support the bridge body 1. Specifically, the lifting assembly includes a lifting rack 5, a lifting gear 6, and a rotating component. The lifting rack 5 is vertically fixedly installed on the support leg 302. There are two lifting racks 5, which are vertically fixedly installed on two horizontally separated sides of the support leg 302. There are two lifting gears 6 corresponding to the lifting racks 5. Both lifting gears 6 are rotatably installed on the sliding seat 301 and mesh with the two lifting racks 5 respectively, so that when the two lifting gears 6 rotate, the two lifting racks 5 drive the support leg 302 to move in the vertical direction.

[0066] Reference Figure 4 and Figure 5 The rotating components include a lifting motor 7, a lifting worm gear 8, and a lifting worm 9. The lifting worm gear 8 is coaxially and fixedly connected to one of the lifting gears 6. The lifting worm 9 is rotatably mounted on the sliding seat 301 and meshes with the lifting worm gear 8. The lifting motor 7 is mounted on the sliding seat 301 and is used to drive the lifting worm 9 to rotate, so that when the lifting motor 7 drives the lifting worm 9 to rotate, the lifting worm gear 8 drives one of the lifting gears 6 to rotate synchronously.

[0067] Continue to refer to Figure 4 and Figure 5 Both lifting gears 6 are coaxially fixedly mounted with first bevel gears 10. The sliding seat 301 is rotatably mounted with a horizontally set transmission rod 11 that is perpendicular to the axis of the two lifting gears 6. The transmission rod 11 is coaxially fixedly mounted with two second bevel gears 12. The two second bevel gears 12 mesh with the two first bevel gears 10 respectively, so that when one lifting gear 6 rotates, the other lifting gear 6 rotates synchronously through the cooperation of the first bevel gear 10 and the second bevel gear 12. The rotation of the two lifting gears 6 can be synchronously realized without an additional drive source, and the operation is simple.

[0068] Reference Figure 4 To further ensure the stability of the outrigger 302 after it moves vertically, the sliding seat 301 is equipped with a reinforcement component, which includes a reinforcement plate 13 and a driving component. There are two reinforcement plates 13, which are respectively located on both sides of the outrigger 302 in the horizontal direction adjacent to the two lifting racks 5. When the two reinforcement plates 13 move towards each other to clamp the two sides of the outrigger 302, they further limit the position of the outrigger 302. When the reinforcement plates 13 clamp and fix the two sides of the outrigger 302, they are less likely to rub against the lifting racks 5 and cause wear, which helps to ensure the service life of the lifting racks 5.

[0069] Continue to refer to Figure 4The driving components include a drive telescopic cylinder 14, a drive rod 15, a drive connecting rod 16, and a reinforcing guide rail 17. The reinforcing guide rail 17 is horizontally mounted on the sliding seat 301 and extends along the axis of the lifting gear 6. The reinforcing guide rail 17 passes through two reinforcing plates 13 and slides in cooperation with the two reinforcing plates 13. Two drive connecting rods 16 are provided, with one end of each drive connecting rod 16 rotatably mounted on the two reinforcing plates 13 and the other end of each drive connecting rod 16 rotatably mounted on the drive rod 15. The drive telescopic cylinder 14 is horizontally fixedly mounted on the sliding seat 301, with the piston rod of the drive telescopic cylinder 14 facing one of the lifting racks 5. The drive rod 15 is fixedly mounted on one end of the piston rod of the drive telescopic cylinder 14, so that the drive telescopic cylinder 14 drives the drive rod 15 to move towards or away from the outrigger 302. When the drive cylinder 14 drives the drive rod 15 to move, the drive rod 15 drives the two reinforcing plates 13 to move toward each other or away from each other through the two drive linkages 16, thereby fixing or not fixing the outrigger 302. During the movement of the reinforcing plates 13, the reinforcing guide rail 17 plays a limiting role for the two reinforcing plates 13, which helps to fully ensure the stability of the two reinforcing plates 13 during movement.

[0070] Reference Figure 4 and Figure 5 To ensure the stability of the bridge body 1 when it moves horizontally along the width of the pier, an I-beam guide rail 18 extending along its length is fixedly mounted horizontally on the top of the supporting beam of the pier. The I-beam guide rail 18 includes a top plate 181, a web plate 182, and a bottom plate 183. The web plate 182 is fixedly connected to the top of the bottom plate 183, and the top plate 181 is fixedly connected to the top of the web plate 182 and is arranged parallel to the bottom plate 183. The bottom of the support leg 302 is provided with a sliding groove 19 that engages with the top plate 181. The movement of the bridge body 1 along the width of the pier is limited by the cooperation between the I-beam guide rail 18 and the sliding groove 19, thereby ensuring the stability of the bridge body 1 when it moves along the width of the pier.

[0071] Reference Figure 4 and Figure 6The sliding groove 19 has two groove walls facing each other, each with an extended mounting groove 20. A rolling assembly is installed within each mounting groove 20. The rolling assembly includes a rolling seat 21, a roller 22, and a moving component. The moving component includes a motion motor 23, a motion base 24, a motion screw 25, a motion slide 26, a motion rotating block 27, and a motion drive block 28. Specifically, the motion base 24 is fixedly installed on the support leg 302 and located within the mounting groove 20. The top of the motion base 24 has an inclined motion groove 29, and the motion slide 26... The bottom slide is fitted with the motion slide groove 29, the rolling seat 21 is fixedly installed on the top of the motion slide 26, and the roller 22 is rotatably installed on the top of the rolling seat 21. When the motion slide 26 slides in the motion slide groove 29, the rolling seat 21 drives the roller 22 to move obliquely toward or away from the bottom of the top plate 181. When the roller 22 touches the bottom of the top plate 181, it further limits the vertical direction of the vertical part, which helps to further ensure the stability of the vertical part when it drives the bridge body 1 to move along the width direction of the pier.

[0072] Reference Figure 6 A limiting groove 30 is provided on the side of the motion slide 26 away from the web plate 182. The motion drive block 28 is rotatably installed on the motion slide 26 and located in the limiting groove 30. The motion screw 25 passes through the motion drive block 28 and rotates in cooperation with the motion drive block 28. The motion motor 23 is installed on the motion drive block 28 and is used to drive the motion screw 25 to rotate. The rotating block 27 is rotatably mounted on the side of the moving base 24 near the web plate 182. The moving screw 25 passes through the rotating block 27 and is threadedly engaged with the rotating block. When the moving motor 23 drives the moving screw 25 to rotate, the moving screw 25, due to its threaded engagement with the rotating block 27, drives the moving slide 26 and the rolling seat 21 together along the moving slide groove 29 in an oblique direction toward or away from the top plate 181, which is convenient and stable. When the moving slide 26 and the rolling seat 21 are in a state away from the top plate 181, it is convenient for the support leg 302 to connect with the top plate 181 or to achieve stable support for the bridge body 1 through the bottom of the support leg 302.

[0073] Continue to refer to Figure 6 When the motion drive block 28 drives the motion slide block 26 and the rolling block 21 to move obliquely along the motion slide groove 29, both the motion drive block 28 and the motion rotating block 27 rotate slightly. The side of the motion drive block 28 and the motion rotating block 27 that are close to each other is provided with a semi-circular arc surface, so that when the motion drive block 28 and the motion rotating block 27 rotate slightly, wear caused by friction between the edges and other parts is not likely to occur, which helps to ensure the overall service life of the rolling assembly.

[0074] The implementation principle of the method for synchronous erection of double-layer bridge slabs in this application embodiment is as follows: When installing the precast beams of the double-layer bridge, each layer can be fixed to the next pier in sequence by a bridge erection device, without the need for a crane to lift the precast beams. This makes it less likely for the upper and lower layers of precast beams to interfere with each other during installation, facilitating the synchronous erection of the upper and lower layers of beams of the double-layer bridge and improving the work efficiency during the installation of precast beams. In addition, since no crane is required during the erection of precast beams, there is no need to consider whether the terrain on both sides of the bridge is flat enough for the crane to travel, making it easy to adapt to different terrain conditions and highly applicable.

[0075] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A method for synchronously erecting double-layer bridge decks, characterized in that: The specific steps are as follows: S1, after the piers and the initial beams of the two layers are erected, the two bridge erection devices are moved to the beams on both sides after erection; S2, the two bridge erection devices are fixed in sequence between the erected beams and the supporting beams of the next pier to be erected; S3, the precast beams to be erected are transported to the positions of the two bridge erection devices in sequence; S4, the precast beams are hoisted to the supporting beams of the two adjacent piers by the hoisting crane (2) set on the bridge erection device; S5, the bridge erection device is moved horizontally along the width direction of the pier, and steps S3 and S4 are repeated to erect the precast beams to the required width in sequence; S6, after the precast beams of the two layers are erected by the hoisting crane (2) of the two bridge erection devices in sequence, steps S2 to S5 are repeated; S7, when the supporting beams of each of the two adjacent piers are all equipped with precast beams and the precast beams are erected to the required width, the erection of the precast beams is completed. The bridging device in S1 includes a bridging body (1), a hoisting crane (2), and a support mechanism. Two hoisting cranes (2) are arranged along the length of the bridging body (1), and both hoisting cranes (2) slide in cooperation with the bridging body (1). The support mechanism includes sliding legs (3) and supporting legs (4). The sliding legs (3) and supporting legs (4) are distributed along the length of the bridging body (1) and slide in cooperation with the bridging body (1). The sliding legs (3) and supporting legs (4) are used to support the bridging body (1). The sliding support leg (3) includes a sliding seat (301) and a support leg (302). The sliding seat (301) slides along the length of the bridge body (1) and is fitted to the bridge body (1). The support leg (302) slides along the vertical direction and is fitted to the sliding seat (301). The sliding seat (301) is provided with a lifting assembly for driving the support leg (302) to slide along the vertical direction. The lifting assembly includes a lifting rack (5), a lifting gear (6), and a rotating component. The lifting rack (5) is vertically fixedly installed on the support leg (302). The lifting gear (6) is rotatably installed on the sliding seat (301) and meshes with the lifting rack (5). The rotating component is used to drive the lifting gear (6) to rotate. The top of the supporting beam of the pier is horizontally provided with an I-beam guide rail (18) extending along its own length. The I-beam guide rail (18) includes a top plate (181). The bottom of the support leg (302) is provided with a sliding groove (19) that is inserted and matched with the top plate (181). A rolling assembly is provided in the sliding groove (19). The rolling assembly includes a rolling seat (21), a roller (22) and a moving part. The roller (22) is rotatably mounted on the top of the rolling seat (21). The moving part is used to drive the rolling seat (21) to move obliquely toward or away from the top plate (181). The moving parts include a motion motor (23), a motion base (24), a motion lead screw (25), a motion slide (26), a motion rotating block (27), and a motion drive block (28). The motion base (24) is fixedly installed on the support leg (302). The motion base (24) has an inclined motion groove (29). The motion slide (26) slides and engages with the motion groove (29). The rolling seat (21) is fixedly installed on the motion slide (26). The motion slide (26) has a limit groove. 30), the motion drive block (28) is rotatably mounted on the motion slide (26) and located in the limiting groove (30), the motion screw (25) passes through the motion drive block (28) and rotates with the motion drive block (28), the motion motor (23) is mounted on the motion drive block (28) and is used to drive the motion screw (25) to rotate; the motion rotating block (27) is rotatably mounted on the motion base (24), the motion screw (25) passes through the motion rotating block (27) and is threaded with the motion rotating block (27).

2. The method for synchronous erection of double-layer bridge decks according to claim 1, characterized in that: The rotating component includes a lifting motor (7), a lifting worm gear (8), and a lifting worm (9). The lifting worm gear (8) is coaxially fixedly installed on the lifting gear (6). The lifting worm (9) is rotatably installed on the sliding seat (301) and meshes with the lifting worm gear (8). The lifting motor (7) is installed on the sliding seat (301) and is used to drive the lifting worm (9) to rotate.

3. The method for synchronous erection of double-layer bridge decks according to claim 1, characterized in that: Two sets of lifting racks (5) and lifting gears (6) are provided. The two sets of lifting racks (5) and lifting gears (6) are located on opposite sides of the support leg (302). The two sets of lifting gears (6) are coaxially fixedly mounted with first bevel gears (10). The sliding seat (301) is rotatably mounted with a horizontally arranged transmission rod (11). The transmission rod (11) is coaxially fixedly mounted with two second bevel gears (12). The two second bevel gears (12) mesh with the two first bevel gears (10) respectively.

4. The method for synchronous erection of double-layer bridge decks according to claim 1, characterized in that: The sliding seat (301) is provided with a reinforcement component, which includes a reinforcement plate (13) and a driving member. There are two reinforcement plates (13) located on both sides of the horizontal direction of the support leg (302). The driving member is used to drive the two reinforcement plates (13) to move towards each other or away from each other.

5. The method for synchronous erection of double-layer bridge decks according to claim 4, characterized in that: The driving component includes a drive telescopic cylinder (14), a drive rod (15), a drive connecting rod (16), and a reinforcing guide rail (17). The reinforcing guide rail (17) is horizontally mounted on the sliding seat (301). The reinforcing guide rail (17) passes through two reinforcing plates (13) and slides with the two reinforcing plates (13). Two drive connecting rods (16) are provided. One end of each drive connecting rod (16) is rotatably mounted on the two reinforcing plates (13), and the other end is rotatably mounted on the drive rod (15). The drive telescopic cylinder (14) is mounted on the sliding seat (301) and is used to drive the drive rod (15) to move towards or away from the outrigger (302).

6. The method for synchronous erection of double-layer bridge decks according to claim 1, characterized in that: Both the motion drive block (28) and the motion rotating block (27) have arc-shaped surfaces on their adjacent sides.

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