Method for synchronously erecting double-layer bridge plates

Abstract

The invention discloses a method for synchronously erecting double-layer bridge plates, which belongs to the technical field of beam plate erection, and comprises the following specific steps: S1, after bridge piers and two layers of initial beam plates are erected, two bridging devices are respectively moved to the two erected beam plates; s2, the two bridging devices are sequentially fixed between the erected beam plate and a supporting beam body of a next to-be-erected pier; s3, prefabricated beam plates to be erected are sequentially conveyed to the positions where the two bridging devices are located; s4, the prefabricated beam plates are hoisted to the supporting beam bodies of the two adjacent bridge piers; s5, the bridging device is horizontally moved in the width direction of the bridge pier, and the prefabricated beam plates are sequentially erected to the required width; s6, after the two layers of prefabricated beam plates are erected through the hoisting crown blocks of the two bridging devices in sequence, the steps S2 to S5 are repeated; and S7, erection of the precast beam plate is completed. The device has the effects that the upper and lower layers of precast beams and slabs of the double-layer bridge can be conveniently and synchronously erected, and the working efficiency during precast beam and slab mounting is improved.

Description

Technical Field

[0001] The invention relates to the field of beam and slab erection, and in particular to a method for synchronously erecting a double-layer bridge slab. Background Art

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

[0003] A double-deck bridge in the prior art usually includes a pier 01 and a beam slab 02, wherein the pier 01 is provided with two supporting beams 03 distributed in the vertical direction and arranged horizontally, and the beam slab 02 is usually a prefabricated part. During the construction of the double-deck bridge, the prefabricated beam slab 02 is generally lifted and coordinated by two cranes so that the prefabricated beam slab 02 is sequentially erected on the supporting beams 03 of two adjacent piers 01.

[0004] With regard to the above-mentioned prior art, when the beams and slabs are hoisted by two cranes, in order to avoid interference between the upper and lower layers of beams and slabs during installation, usually one of the prefabricated beams and slabs can only be erected on the bottom supporting beam body before the other prefabricated beams and slabs are erected on the top supporting beam body. The installation of the upper and lower layers of prefabricated beams and slabs is difficult to carry out synchronously, and the work efficiency is low. Summary of the invention

[0005] In order to facilitate the synchronous erection of the upper and lower layers of precast beams and slabs of a double-deck bridge and improve the work efficiency during the installation of the precast beams and slabs, the present application provides a method for synchronously erecting a double-deck bridge slab.

[0006] The present application provides a method for synchronously erecting a double-layer bridge slab using the following technical solution: A method for synchronously erecting a double-layer bridge slab comprises the following specific steps: S1, after the pier and the initial beams and slabs of the two layers are erected, two bridge erection devices are respectively moved to the erected beams and slabs on both sides; S2, the two bridge erection devices are sequentially fixed between the erected beams and slabs and the supporting beams of the next pier to be erected; S3, the precast beams and slabs to be erected are sequentially transported to the positions of the two bridge erection devices; S4, the precast beams and slabs are hoisted to the supporting beams of two adjacent piers by a hoisting crane arranged on the bridge erection device; S5, the bridge erection device is horizontally moved along the width direction of the pier, and steps S3 and S4 are repeated to sequentially erect the precast beams and slabs to a required width; S6, after the erection of the two layers of precast beams and slabs is completed by the hoisting cranes of the two bridge erection devices, steps S2 to S5 are repeated; S7, when the supporting beams of two adjacent piers are all installed with precast beams and slabs, and the precast beams and slabs are erected to a required width, the erection of the precast beams and slabs is completed.

[0007] By adopting the above technical scheme, the precast beams of the double-deck bridge can be erected by means of a bridge erection device in which each layer is fixed to the next pier in turn, without the need to lift the precast beams by a crane, so that the upper and lower precast beams are not likely to interfere with each other during installation, which facilitates the synchronous erection of the upper and lower beams of the double-deck bridge, and is beneficial to improving the work efficiency during the installation of the precast beams. In addition, since there is no need for a crane to participate in the erection of the precast beams, there is no need to consider too much whether the terrain on both sides of the bridge is flat for the crane to travel, which facilitates adaptation to different terrain conditions and has strong applicability.

[0008] Optionally, the bridge erection device in S1 includes a bridge erection body, a hoisting crane and a supporting mechanism, wherein two hoisting cranes are arranged along the length direction of the bridge erection body and both hoisting cranes are slidably matched with the bridge erection body, and the supporting mechanism includes sliding legs and supporting legs, wherein the sliding legs and supporting legs are distributed along the length direction of the bridge erection body and are slidably matched with the bridge erection body, and the sliding legs and supporting legs are used to support the bridge erection body.

[0009] By adopting the above technical scheme, the two lifting cranes can facilitate the stable lifting and transportation of precast beams and slabs. The sliding cooperation of the sliding legs and the supporting legs along the length direction of the bridge body facilitates the stable support of the bridge body at different positions of the bridge body, that is, after the bridge body moves, the stable support of the bridge body is achieved by adjusting the positions of the sliding legs and the supporting legs, which has strong applicability.

[0010] Optionally, the sliding leg includes a sliding seat and a leg part, the sliding seat slides and cooperates with the bridge frame body along the length direction of the bridge frame body, the leg part slides and cooperates with the sliding seat in the vertical direction, the sliding seat is provided with a lifting assembly for driving the leg part to slide in the vertical direction, the lifting assembly includes a lifting rack, a lifting gear and a rotating member, the lifting rack is vertically fixed on the leg part, the lifting gear is rotatably installed on the sliding seat and meshes with the lifting rack, and the rotating member is used to drive the lifting gear to rotate.

[0011] By adopting the above technical solution, when the rotating part drives the lifting gear to rotate, the lifting rack drives the support leg to perform vertical lifting movement due to the engagement with the lifting gear. The vertical movement of the support leg can be achieved by rotating the lifting gear. It is convenient and fast, and it is easy to quickly support the bridge body after the sliding leg moves to the specified position, or to cancel the support of the bridge body by moving the support leg in the vertical direction to facilitate the movement of the bridge body.

[0012] Optionally, the rotating part includes a lifting motor, a lifting worm wheel and a lifting worm, the lifting worm wheel is coaxially fixedly mounted on the lifting gear, the lifting worm is rotatably mounted on the sliding seat and meshes with the lifting worm wheel, and the lifting motor is mounted on the sliding seat and is used to drive the lifting worm to rotate.

[0013] 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 is beneficial to ultimately ensure the stability of the position of the support leg after moving in the vertical direction.

[0014] Optionally, two groups of lifting racks and lifting gears are provided, and the two groups of lifting racks and lifting gears are respectively located on two sides away from the support leg part, and the two groups of lifting gears are coaxially fixed with a first bevel gear, and the sliding seat is rotatably installed with a horizontally arranged transmission rod, and the transmission rod is coaxially fixed with two second bevel gears, and the two second bevel gears are respectively meshed with the two first bevel gears.

[0015] By adopting the above technical solution, the arrangement of two sets of lifting racks and lifting gears facilitates the realization of further limiting effect on the support leg when it moves in the vertical direction, which is beneficial to further ensure the stability of the support leg when it moves 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. No additional driving source is required, and the operation is simple.

[0016] Optionally, the sliding seat is provided with a reinforcement component, and the reinforcement component includes a reinforcement plate and a driving member. The reinforcement plates are provided with two and are respectively located on both sides of the support leg portion in the horizontal direction, and the driving member is used to drive the two reinforcement plates to move towards or away from each other.

[0017] By adopting the above technical solution, after the supporting leg moves in the vertical direction, the driving member drives the two reinforcement plates toward each other to clamp the supporting leg and further limit the position of the supporting leg, which is beneficial to further ensure the stability of the position of the supporting leg after moving in the vertical direction.

[0018] Optionally, the driving component includes a driving telescopic cylinder, a driving rod, a driving connecting rod and a reinforcement guide rail, the reinforcement guide rail is horizontally installed on the sliding seat, the reinforcement guide rail is passed through two reinforcement plates and slides with the two reinforcement plates, two driving connecting rods are provided, one end of the two driving connecting rods is rotatably installed on the two reinforcement plates respectively, and the other end is 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 in a direction close to or away from the support leg.

[0019] By adopting the above technical solution, when the telescopic cylinder drives the driving rod to move, the driving rod drives the two reinforcement plates to move towards or away from each other through the two driving connecting rods, and the reinforcement guide rail plays a limiting role in the movement of the two reinforcement plates, which is beneficial to fully ensure the stability of the two reinforcement plates during movement. The setting of the driving telescopic cylinder makes it convenient and quick to fix or release the support leg parts when the two reinforcement plates move towards or away from each other.

[0020] Optionally, an I-beam guide rail extending along the length direction of the supporting beam of the pier is horizontally arranged on the top of the supporting beam, and the I-beam guide rail includes a top plate body. A sliding groove that is plugged into and cooperates with the top plate body is provided at the bottom of the supporting leg part, and a rolling assembly is arranged in the sliding groove. The rolling assembly includes a rolling seat, a roller and a moving part. The roller is rotatably installed on the top of the rolling seat, and the moving part is used to drive the rolling seat to move obliquely toward or away from the top plate body.

[0021] By adopting the above technical solution, the sliding guide rail plays a limiting role when the bridging device moves horizontally along the width direction of the pier, which is beneficial to ensure the stability of the overall movement of the bridging device. At the same time, the cooperation between the roller and the I-beam guide rail is beneficial 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 toward or away from the top plate makes it difficult for the roller to interfere with the I-beam guide rail when it is installed.

[0022] Optionally, the moving part includes a moving motor, a moving base, a moving screw, a moving slide, a moving rotating block and a moving driving block, the moving base is fixedly mounted on the support leg, the moving base is provided with an inclined moving slide groove, the moving slide is slidably matched in the moving slide groove, the rolling seat is fixedly mounted on the moving slide, the moving slide is provided with a limiting groove, the moving driving block is rotatably mounted on the moving slide and is located in the limiting groove, the moving screw is passed through the moving driving block and is rotatably matched with the moving driving block, the moving motor is installed on the moving driving block and is used to drive the moving screw to rotate; the moving rotating block is rotatably mounted on the moving base, the moving screw is passed through the moving rotating block and is threadably matched with the rotating rotating block.

[0023] By adopting the above technical solution, when the motion motor drives the motion screw to rotate, the motion screw cooperates with the thread of the motion rotating block and drives the motion slide and the rolling seat to move obliquely along the motion slide groove toward or away from the top plate through the motion driving block, which is convenient and stable.

[0024] Optionally, arc-shaped surfaces are provided on the sides of the motion driving block and the motion rotating block that are close to each other.

[0025] By adopting the above technical solution, the setting of the arc surface makes it difficult for the motion driving block and the motion rotating block to be worn due to friction with other components at the edges and corners when the motion driving block drives the motion slide to move and the motion driving block and the motion rotating block rotate slightly, which is beneficial to ensuring the overall service life of the rolling assembly.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. During the erection process of the precast beams and slabs of the double-deck bridge, each layer can be fixed to the next pier in turn through the bridge erection device, without the need to lift the precast beams and slabs by a crane, so that the upper and lower layers of the precast beams and slabs are not likely to interfere with each other during installation, which is convenient for synchronously erecting the upper and lower layers of the double-deck bridge beams and slabs, and is conducive to improving the work efficiency of the precast beam and slab installation.

[0027] 2. The two hoisting cranes facilitate the stable lifting and transportation of precast beams and slabs. The sliding cooperation of the sliding legs and the supporting legs along the length direction of the bridge body facilitates the stable support of the bridge body at different positions of the bridge body, that is, after the bridge body moves, the stable support of the bridge body can be achieved by adjusting the positions of the sliding legs and the supporting legs, which has strong applicability.

[0028] 3. When the rotating part drives the lifting gear to rotate, the lifting rack drives the support leg to perform vertical lifting movement due to the meshing with the lifting gear. The vertical movement of the support leg can be achieved by rotating the lifting gear. It is convenient and fast, and it is easy to quickly support the bridge body after the sliding leg moves to the specified position, or to cancel the support of the bridge body by moving the support leg in the vertical direction to facilitate the movement of the bridge body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0030] Figure 2 It is a schematic diagram of the main structure of the lifting assembly in Example 1 of the present application.

[0031] Figure 3 It is a schematic diagram of the overall structure of Example 2 of the present application.

[0032] Figure 4 It is a schematic diagram of the connection relationship between the support leg and the I-beam in Example 2 of the present application.

[0033] Figure 5 It is a schematic diagram of the internal structure of the sliding seat in Example 2 of the present application.

[0034] Figure 6 It is a partial cross-sectional schematic diagram of the bottom of the leg portion in Example 2 of the present application.

[0035] Description of reference numerals: 1. Bridge erection; 2. Lifting crane; 3. Sliding outrigger; 301. Sliding seat; 302. Outrigger; 4. Support outrigger; 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. Reinforcement plate; 14. Driving telescopic cylinder; 15. Driving rod; 16. Driving connecting rod; 17 , reinforcement rail; 18, I-beam guide rail; 181, top plate; 182, web; 183, bottom plate; 19, sliding groove; 20, mounting groove; 21, rolling seat; 22, roller; 23, motion motor; 24, motion base; 25, motion screw rod; 26, motion slide; 27, motion rotating block; 28, motion driving block; 29, motion slide; 30, limit groove; 31, lifting jack; 32, fixing pin; 33, fixing hole. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-4 This application is described in further detail.

[0037] The embodiment of the present application discloses a method for synchronously erecting a double-layer bridge slab.

[0038] Example 1.

[0039] The method for synchronously erecting a double-layer bridge slab specifically comprises the following steps: S1, after the bridge piers and the initial beams and slabs of the two layers are erected, the two bridge erection devices are respectively moved to the erected beams and slabs on both sides.

[0040] S2, fixing the two bridge erection devices in sequence between the erected beam slab and the supporting beam body of the next pier to be erected.

[0041] S3, transporting the prefabricated beams to be erected to the locations of the two bridge erection devices in sequence. Specifically, the prefabricated beams to be erected are transported in sequence by beam transport vehicles.

[0042] S4, hoisting the precast beam slab to the supporting beam body of two adjacent piers by means of the hoisting crane 2 provided on the bridge erection device. Specifically, two hoisting cranes 2 are provided to fully ensure the stability of the precast beam slab when hoisting it to the required position.

[0043] S5, moving the bridge erection device horizontally along the width direction of the pier, and repeating steps S3 and S4, successively erecting the prefabricated beams and slabs to the required width. Specifically, the bridge erection device is driven by a winch to move horizontally along the width direction of the pier.

[0044] S6, after the two layers of prefabricated beams and slabs are erected by the hoisting cranes 2 of the two bridge erection devices in turn, steps S2 to S5 are repeated.

[0045] S7, when the precast beams and slabs are installed on the supporting beams of two adjacent piers and the precast beams and slabs are erected to the required width, the erection of the precast beams and slabs is completed.

[0046] Reference Figure 1 Among them, the bridge erection device in S1 specifically includes a bridge erection body 1, a lifting crane 2 and a supporting mechanism. Two lifting cranes 2 are arranged and distributed along the length direction of the bridge erection body 1. The two lifting cranes 2 are both located on the top of the bridge erection body 1 and slide with the bridge erection body 1. After the two lifting cranes 2 lift the precast beams and slide along the length direction of the bridge erection body 1 to the designated position through the winch drive, the precast beams can be lowered to realize the erection and assembly of the precast beams.

[0047] Continue to refer to Figure 1 The supporting mechanism includes a sliding leg 3 and a supporting leg 4. Both the sliding leg 3 and the supporting leg 4 slide along the length direction of the bridge erection body 1 and cooperate with the bottom of the bridge erection body 1, so that the sliding leg 3 and the supporting leg 4 can support the bridge erection body 1. At the same time, the relative movement between the sliding leg 3 and the supporting leg 4 and the bridge erection body 1 is realized through alternating support, thereby facilitating the erection and fixing of the bridge erection body 1 between the completed beam plate and the supporting beam of the next pier to be erected.

[0048] Reference Figure 1 and Figure 2 In the embodiment of the present application, two groups of sliding legs 3 and supporting legs 4 are provided, and each group of sliding legs 3 and supporting legs 4 is provided with two along the width direction of the pier, and the two groups of sliding legs 3 are located between the two groups of supporting legs 4, wherein the supporting legs 4 include a supporting seat 401 and a hydraulic jack 402, and the supporting seat 401 slides along the length direction of the bridge frame body 1 and cooperates with the bottom of the bridge frame body 1, and the hydraulic jack 402 is fixedly installed at the bottom of the supporting seat 401, so that the hydraulic jack 402 drives the movement of its own piston rod so that the supporting legs 4 can finally support or not support the bridge frame body 1.

[0049] Reference Figure 2 The sliding leg 3 includes a sliding seat 301 and a leg portion 302. The sliding seat 301 is slidably matched with the bridge frame body 1 along the length direction of the bridge frame body 1. The cross-section of the leg portion 302 is rectangular. The leg portion 302 is penetrated in the vertical direction and slidably matched with the sliding seat 301. The sliding seat 301 is provided with a lifting assembly for driving the leg portion 302 to slide in the vertical direction, so that the leg portion 302 can support or not support the bridge frame body 1.

[0050] Continue to refer to Figure 2The lifting assembly includes a lifting jack 31 and a fixed pin 32. The cylinder of the lifting jack 31 is vertically fixedly installed at the bottom of the sliding seat 301. A plurality of fixing holes 33 distributed in the vertical direction are opened on the side of the leg part 302 close to the lifting jack 31. The fixed pin 32 is horizontally penetrated and threadedly matched with the piston rod of the lifting jack 31. When the fixed pin 32 is penetrated into one of the fixing holes 33, the fixation between the piston rod of the lifting jack 31 and the leg part 302 is realized, so that when the lifting jack 31 drives its own piston rod to move, the leg part 302 moves in the vertical direction, which is convenient and fast, and is convenient for quickly supporting the bridge frame 1 after the sliding leg 3 moves to the specified position, or when the frame beam 1 needs to be moved, the support of the sliding leg 3 on the bridge frame is cancelled.

[0051] Example 2.

[0052] The method for synchronously erecting a double-layer bridge slab in the embodiment of the present application has the following specific steps: S1, after the bridge piers and the two-layer initial beams and slabs are erected, the two bridge erection devices are respectively moved to the erected two side beams and slabs.

[0053] S2, fixing the two bridge erection devices in sequence between the erected beam slab and the supporting beam body of the next pier to be erected.

[0054] S3, transporting the prefabricated beams to be erected to the locations of the two bridge erection devices in sequence. Specifically, the prefabricated beams to be erected are transported in sequence by beam transport vehicles.

[0055] S4, hoisting the precast beam slab to the supporting beam body of two adjacent piers by means of the hoisting crane 2 provided on the bridge erection device. Specifically, two hoisting cranes 2 are provided to fully ensure the stability of the precast beam slab when hoisting it to the required position.

[0056] S5, moving the bridge erection device horizontally along the width direction of the pier, and repeating steps S3 and S4, successively erecting the prefabricated beams and slabs to the required width. Specifically, the bridge erection device is driven by a winch to move horizontally along the width direction of the pier.

[0057] S6, after the two layers of prefabricated beams and slabs are erected by the hoisting cranes 2 of the two bridge erection devices in turn, steps S2 to S5 are repeated.

[0058] S7, when the precast beams and slabs are installed on the supporting beams of two adjacent piers and the precast beams and slabs are erected to the required width, the erection of the precast beams and slabs is completed.

[0059] Reference Figure 3Among them, the bridge erection device in S1 specifically includes a bridge erection body 1, a lifting crane 2 and a supporting mechanism. Two lifting cranes 2 are arranged and distributed along the length direction of the bridge erection body 1. The two lifting cranes 2 are both located on the top of the bridge erection body 1 and slide with the bridge erection body 1. After the two lifting cranes 2 lift the precast beams and slide along the length direction of the bridge erection body 1 to the designated position through the winch drive, the precast beams can be lowered to realize the erection and assembly of the precast beams.

[0060] Reference Figure 3 and Figure 4 The supporting mechanism includes a sliding leg 3 and a supporting leg 4. Both the sliding leg 3 and the supporting leg 4 slide along the length direction of the bridge erection body 1 and cooperate with the bottom of the bridge erection body 1, so that the sliding leg 3 and the supporting leg 4 can support the bridge erection body 1. At the same time, the relative movement between the sliding leg 3 and the supporting leg 4 and the bridge erection body 1 is realized through alternating support, thereby facilitating the erection and fixing of the bridge erection body 1 between the completed beam plate and the supporting beam of the next pier to be erected.

[0061] Continue to refer to Figure 3 and Figure 4 In the embodiment of the present application, two groups of sliding legs 3 and supporting legs 4 are provided, and each group of sliding legs 3 and supporting legs 4 is provided with two along the width direction of the pier, and the two groups of sliding legs 3 are located between the two groups of supporting legs 4, wherein the supporting legs 4 include a supporting seat 401 and a hydraulic jack 402, and the supporting seat 401 slides along the length direction of the bridge frame body 1 and cooperates with the bottom of the bridge frame body 1, and the hydraulic jack 402 is fixedly installed at the bottom of the supporting seat 401, so that the hydraulic jack 402 drives the movement of its own piston rod so that the supporting legs 4 can finally support or not support the bridge frame body 1.

[0062] Reference Figure 3 and Figure 5 The sliding leg 3 includes a sliding seat 301 and a leg portion 302. The sliding seat 301 is slidably matched with the bridge frame body 1 along the length direction of the bridge frame body 1. The cross-section of the leg portion 302 is rectangular. The leg portion 302 is penetrated in the vertical direction and slidably matched with the sliding seat 301. The sliding seat 301 is provided with a lifting assembly for driving the leg portion 302 to slide in the vertical direction, so that the leg portion 302 can support or not support the bridge frame body 1. Specifically, the lifting assembly includes a lifting rack 5, a lifting gear 6 and a rotating part. The lifting rack 5 is vertically fixedly installed on the support leg part 302. Two lifting racks 5 are provided and are respectively vertically fixedly installed on the two sides of the support leg part 302 that are horizontally far away from each other. Two lifting gears 6 are correspondingly provided to the lifting rack 5. The two lifting gears 6 are both rotatably installed on the sliding seat 301 and are respectively meshed with the two lifting racks 5, so that when the two lifting gears 6 rotate, the two lifting racks 5 drive the support leg part 302 to move in the vertical direction.

[0063] Reference Figure 4 and Figure 5 The rotating parts include a lifting motor 7, a lifting worm wheel 8 and a lifting worm 9. The lifting worm wheel 8 is coaxially fixedly connected to one of the lifting gears 6. The lifting worm 9 is rotatably installed on the sliding seat 301 and meshes with the lifting worm wheel 8. The lifting motor 7 is installed 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 wheel 8 drives one of the lifting gears 6 to rotate synchronously.

[0064] Continue to refer to Figure 4 and Figure 5 The two lifting gears 6 are coaxially fixed with a first bevel gear 10, and the sliding seat 301 is rotatably installed with a transmission rod 11 which is horizontally arranged and perpendicular to the axes of the two lifting gears 6, and the transmission rod 11 is coaxially fixed with two second bevel gears 12. The two second bevel gears 12 are respectively meshed with the two first bevel gears 10, so that when one of the lifting gears 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 driving source, and the operation is simple.

[0065] Reference Figure 4 In order to further ensure the stability of the position of the leg part 302 after moving in the vertical direction, the sliding seat 301 is provided with a reinforcement component, wherein the reinforcement component includes a reinforcement plate 13 and a driving member, and two reinforcement plates 13 are provided and are respectively located on both sides of the leg part 302 adjacent to the two lifting racks 5 in the horizontal direction. When the two reinforcement plates 13 move toward each other to clamp the two sides of the leg part 302, the position of the leg part 302 is further limited. When the reinforcement plates 13 clamp the two sides of the leg part 302, it is not easy to cause wear caused by friction with the lifting rack 5, which is beneficial to ensure the service life of the lifting rack 5.

[0066] Continue to refer to Figure 4The driving member includes a driving telescopic cylinder 14, a driving rod 15, a driving connecting rod 16 and a reinforcement guide rail 17, wherein the reinforcement guide rail 17 is horizontally mounted on the sliding seat 301 and extends along the axis direction of the lifting gear 6, and the reinforcement guide rail 17 is passed through the two reinforcement plates 13 and slides with the two reinforcement plates 13. Two driving connecting rods 16 are provided, one end of the two driving connecting rods 16 is respectively rotatably mounted on the two reinforcement plates 13, and the other end is rotatably mounted on the driving rod 15, the driving telescopic cylinder 14 is horizontally fixedly mounted on the sliding seat 301, and the piston rod of the driving telescopic cylinder 14 is arranged toward one of the lifting racks 5, and the driving rod 15 is fixedly mounted on one end of the piston rod of the driving telescopic cylinder 14, so that the driving telescopic cylinder 14 drives the driving rod 15 to move in a direction close to or away from the leg portion 302. When the telescopic cylinder 14 drives the driving rod 15 to move, the driving rod 15 drives the two reinforcement plates 13 to move towards or away from each other through the two driving connecting rods 16, thereby achieving the fixation or looseness of the support leg part 302. During the movement of the reinforcement plates 13, the reinforcement guide rail 17 plays a role in limiting the two reinforcement plates 13, which is beneficial to fully ensure the stability of the two reinforcement plates 13 during movement.

[0067] Reference Figure 4 and Figure 5 In order to fully ensure the stability of the bridge body 1 when it moves horizontally along the width direction of the pier, the top of the supporting beam of the pier is horizontally fixed with an I-shaped guide rail 18 extending along its length direction. The I-shaped guide rail 18 includes a top plate 181, a web 182 and a bottom plate 183, wherein the web 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 182 and arranged parallel to the bottom plate 183. A sliding groove 19 is provided at the bottom of the leg part 302 to be plugged with the top plate 181, so that the movement of the bridge body 1 along the width direction of the pier is limited by the cooperation of the I-shaped guide rail 18 and the sliding groove 19, thereby ensuring the stability of the bridge body 1 when it moves along the width direction of the pier.

[0068] Reference Figure 4 and Figure 6The two groove walls facing the sliding groove 19 are expanded with mounting grooves 20, and rolling components are arranged in the mounting grooves 20. The rolling components include a rolling seat 21, a roller 22 and a moving part, wherein the moving part includes a moving motor 23, a moving base 24, a moving screw 25, a moving slide 26, a moving rotating block 27 and a moving driving block 28. Specifically, the moving base 24 is fixedly installed on the leg part 302 and is located in the mounting groove 20. The top of the moving base 24 is provided with an inclined moving slide 29, and the moving slide 26 The bottom slides in cooperation with the motion slide groove 29, the rolling seat 21 is fixedly installed on the top of the motion slide seat 26, and the roller 22 is rotatably installed on the top of the rolling seat 21. When the motion slide seat 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 contacts the bottom of the top plate 181, the vertical direction of the vertical part is further limited, which is beneficial to further ensure the stability of the vertical part when driving the bridge body 1 to move along the width direction of the pier.

[0069] Reference Figure 6 A limiting groove 30 is provided on the side of the motion slide 26 away from the web 182, the motion driving block 28 is rotatably installed on the motion slide 26 and is located in the limiting groove 30, the motion lead screw 25 is passed through the motion driving block 28 and rotatably cooperates with the motion driving block 28, and the motion motor 23 is installed on the motion driving block 28 and is used to drive the motion lead screw 25 to rotate. The motion rotating block 27 is rotatably installed on one side of the motion base 24 close to the web 182, and the motion screw 25 is penetrated through the motion rotating block 27 and cooperates with the rotating block thread, so that when the motion motor 23 drives the motion screw 25 to rotate, the motion screw 25 cooperates with the thread of the motion rotating block 27 and drives the motion slide 26 and the rolling seat 21 to move along the motion slide groove 29 obliquely toward or away from the top plate 181 through the motion driving block 28, which is convenient and stable. When the motion slide 26 and the rolling seat 21 are located away from the top plate 181, it is convenient for the support leg part 302 to be connected to the top plate 181 or to achieve stable support for the bridge frame 1 through the bottom of the support leg part 302.

[0070] Continue to refer to Figure 6 When the motion driving block 28 drives the motion slide 26 and the rolling seat 21 to move obliquely along the motion slide groove 29, the motion driving block 28 and the motion rotating block 27 both rotate slightly, and a semicircular arc surface is provided on the side close to the motion driving block 28 and the motion rotating block 27, so that when the motion driving block 28 and the motion rotating block 27 rotate slightly, it is not easy to cause wear due to friction between the edges and corners and other components, which is beneficial to ensure the overall service life of the rolling assembly.

[0071] The implementation principle of a method for synchronously erecting a double-deck bridge slab in an embodiment of the present application is as follows: when the precast beams and slabs of the double-deck bridge are hypothetically installed, it can be carried out through a bridge erection device in which each layer is fixed to the next pier in turn, and there is no need to lift the precast beams and slabs by a crane, so that the upper and lower precast beams and slabs are not prone to interference with each other during installation, which facilitates the synchronous erection of the upper and lower beams and slabs of the double-deck bridge, and is beneficial to improving the work efficiency during the installation of the precast beams and slabs. In addition, since there is no need for the participation of a crane during the erection of the precast beams and slabs, there is no need to consider too much whether the terrain conditions on both sides of the bridge are flat for the crane to travel, which facilitates adaptation to different terrain conditions and has strong applicability.

[0072] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for synchronously erecting a double-layer bridge slab, characterized in that: The method comprises the following specific steps: S1, after the bridge piers and the initial beams and slabs of the two layers are erected, the two bridge erection devices are respectively moved to the erected beams and slabs on both sides; S2, fixing the two bridge erection devices in sequence between the erected beam plate and the supporting beam body of the next pier to be erected; S3, transporting the prefabricated beams and slabs to be erected to the locations of the two bridge erection devices in sequence; S4, hoisting the prefabricated beam slab to the supporting beam bodies of two adjacent bridge piers by means of a hoisting crane (2) arranged on the bridge erection device; S5, horizontally move the bridge erection device along the width direction of the pier, and repeat steps S3 and S4 to sequentially erect the prefabricated beams and slabs to a required width; S6, after the two layers of prefabricated beams and slabs are erected by the hoisting cranes (2) of the two bridge erection devices in turn, steps S2 to S5 are repeated; S7, when the precast beams and slabs are installed on the supporting beams of two adjacent piers and the precast beams and slabs are erected to the required width, the erection of the precast beams and slabs is completed.

2. The method for synchronously erecting a double-layer bridge slab according to claim 1, characterized in that: The bridge erection device in S1 comprises a bridge erection body (1), a hoisting crane (2) and a supporting mechanism, wherein two hoisting cranes (2) are arranged along the length direction of the bridge erection body (1) and both hoisting cranes (2) are slidably matched with the bridge erection body (1), and the supporting mechanism comprises sliding legs (3) and supporting legs (4), wherein the sliding legs (3) and the supporting legs (4) are distributed along the length direction of the bridge erection body (1) and are slidably matched with the bridge erection body (1), and the sliding legs (3) and the supporting legs (4) are used to support the bridge erection body (1).

3. The method for synchronously erecting a double-layer bridge slab according to claim 2, characterized in that: The sliding leg (3) comprises a sliding seat (301) and a leg part (302); the sliding seat (301) is slidably engaged with the bridge bridge body (1) along the length direction of the bridge bridge body (1); the leg part (302) is slidably engaged with the sliding seat (301) along the vertical direction; the sliding seat (301) is provided with a lifting assembly for driving the leg part (302) to slide along the vertical direction; the lifting assembly comprises a lifting rack (5), a lifting gear (6) and a rotating member; the lifting rack (5) is vertically fixedly mounted on the leg part (302); the lifting gear (6) is rotatably mounted on the sliding seat (301) and meshed with the lifting rack (5); and the rotating member is used to drive the lifting gear (6) to rotate.

4. The method for synchronously erecting a double-layer bridge slab according to claim 3 is characterized in that: The rotating member comprises a lifting motor (7), a lifting worm wheel (8) and a lifting worm (9); the lifting worm wheel (8) is coaxially fixedly mounted on the lifting gear (6); the lifting worm (9) is rotatably mounted on the sliding seat (301) and meshes with the lifting worm wheel (8); the lifting motor (7) is mounted on the sliding seat (301) and is used to drive the lifting worm (9) to rotate.

5. The method for synchronously erecting a double-layer bridge slab according to claim 3, characterized in that: The lifting rack (5) and the lifting gear (6) are provided in two groups. The two groups of the lifting rack (5) and the lifting gear (6) are respectively located on two sides of the support leg (302) that are far away from each other. The two groups of the lifting gear (6) are both coaxially fixedly mounted with a first bevel gear (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) are respectively meshed with the two first bevel gears (10).

6. The method for synchronously erecting a double-layer bridge slab according to claim 3, characterized in that: The sliding seat (301) is provided with a reinforcement component, and the reinforcement component comprises a reinforcement plate (13) and a driving member. Two reinforcement plates (13) are provided and are respectively located on both sides of the support leg portion (302) in the horizontal direction. The driving member is used to drive the two reinforcement plates (13) to move in a direction of approaching or moving away from each other.

7. A method for synchronously erecting a double-layer bridge slab according to claim 6, characterized in that: The driving member comprises a driving telescopic cylinder (14), a driving rod (15), a driving connecting rod (16) and a reinforcement guide rail (17); the reinforcement guide rail (17) is horizontally mounted on the sliding seat (301); the reinforcement guide rail (17) passes through the two reinforcement plates (13) and is slidably matched with the two reinforcement plates (13); two driving connecting rods (16) are provided; one end of the two driving connecting rods (16) is respectively rotatably mounted on the two reinforcement plates (13) and the other end is rotatably mounted on the driving rod (15); the driving telescopic cylinder (14) is mounted on the sliding seat (301) and is used to drive the driving rod (15) to move in a direction close to or away from the leg portion (302).

8. The method for synchronously erecting a double-layer bridge slab according to claim 3, characterized in that: An I-shaped guide rail (18) extending along the length direction of the supporting beam of the pier is horizontally arranged on the top of the supporting beam, and the I-shaped guide rail (18) includes a top plate (181). A sliding groove (19) plug-fitting with the top plate (181) is provided at the bottom of the supporting leg (302), and a rolling assembly is arranged 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 installed on the top of the rolling seat (21), and the moving part is used to drive the rolling seat (21) to move obliquely toward or away from the top plate (181).

9. A method for synchronously erecting a double-layer bridge slab according to claim 8, characterized in that: The moving part comprises a moving motor (23), a moving base (24), a moving screw rod (25), a moving slide seat (26), a moving rotating block (27) and a moving driving block (28); the moving base (24) is fixedly mounted on the supporting leg portion (302); the moving base (24) is provided with an inclined moving slide groove (29); the moving slide seat (26) is slidably matched with the moving slide groove (29); the rolling seat (21) is fixedly mounted on the moving slide seat (26); the moving slide seat (26) is provided with a limited position The motion drive block (28) is rotatably mounted on the motion slide (26) and is located in the limit groove (30); the motion screw rod (25) is passed through the motion drive block (28) and is rotatably matched 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 rod (25) to rotate; the motion rotating block (27) is rotatably mounted on the motion base (24); the motion screw rod (25) is passed through the motion rotating block (27) and is threadably matched with the rotating block.

10. The method for synchronously erecting a double-layer bridge slab according to claim 8, characterized in that: The sides of the motion driving block (28) and the motion rotating block (27) that are close to each other are both provided with arc-shaped surfaces.

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