Bridge precast beam plate translation installation method and device thereof

Abstract

The application discloses a bridge prefabricated beam plate translation installation method and device, belongs to the bridge prefabricated beam plate installation technical field, and relates to a bridge prefabricated beam plate translation installation device, which comprises a beam conveying trolley and a limiting mechanism.The limiting mechanism comprises limiting rods which are rotationally arranged on the side walls on the two sides of the beam conveying trolley at intervals.The rotation axes of the limiting rods are parallel to the advancing direction of the beam conveying trolley.The limiting rods are used for abutting against the side walls of the beam plate.A sliding column is slidably arranged on the beam conveying trolley.The sliding direction of the sliding column is arranged along the vertical direction.The sliding column is in one-to-one correspondence with the limiting rods.The sliding column is used for abutting against the bottom wall of the beam plate.A reset member for pushing the sliding column to slide upwards is arranged in the beam conveying trolley.A transmission assembly is arranged on the beam conveying trolley.The transmission assembly is used for driving the corresponding limiting rod to rotate when the sliding column slides.The application has the effect of conveniently limiting the beam plate on the beam conveying trolley.

Description

Technical Field

[0001] This application relates to the field of bridge precast beam installation technology, and in particular to a method and apparatus for the translational installation of bridge precast beams. Background Technology

[0002] During bridge construction, due to the large weight of precast bridge beams, installation is generally carried out using a double-crane lifting system or a bridge erecting machine.

[0003] Currently, the installation methods for precast bridge beams mainly include the following steps: Step 1: Install the track beams on the cap beam according to the beam and slab installation plan; Step 2: Install the rails on the track beam; Step 3: Place the beam transport trolley on the track. The beam transport trolley is equipped with a stop block. A double U-shaped opening is made on the stop block. Double rectangular bolts are pre-embedded at the corresponding positions on the beam plate. Then, the beam plate is hoisted onto the beam transport trolley so that the double rectangular bolts and the double U-shaped opening are engaged to prevent the beam plate from shifting. Then, connect the winch to the beam transport trolley. Step 4: Move the beam transport trolley using a winch until the beam reaches the installation position; Step 5: Disconnect the winch from the beam transport trolley, use jacks to lift the beam, remove the beam transport trolley, track and track beam below, and finally install the bridge bearings. Lower the jacks and place the beam on the bearings to complete the installation of one beam.

[0004] To prevent the beams from shifting on the beam transport trolley, rectangular bolts need to be pre-embedded in the beams. This not only increases the workload of the workers, but also requires precise control over the pre-embedded position of the rectangular bolts, so improvements are needed. Summary of the Invention

[0005] To facilitate the positioning of beams on the beam transport trolley, this application provides a method and apparatus for the translational installation of precast bridge beams.

[0006] Firstly, the bridge precast beam installation method provided in this application adopts the following technical solution: A method for translating and installing precast bridge beams includes the following steps: Step 1: Install the track beam on the cap beam; Step 2: Install the rails on the track beam; Step 3: Use a beam transport trolley to transport the beam plate. Place the beam transport trolley (1) equipped with a limiting mechanism on the track. The limiting mechanism is used to limit the beam plate so that the center lines of the track, track beam and beam transport trolley coincide. Step 4: Use a large trailer to transport the beam to the access road or bridge deck, then lift the beam from the access road or bridge deck onto the beam transport trolley, activate the limiting mechanism to limit the beam, and then connect the winch on the track beam to the beam transport trolley. Step 5: Use a winch to pull the beam transport trolley to transport the beam until it reaches the preset installation position, and then lock the wheels of the beam transport trolley. Step 6: Disconnect the winch from the beam transport trolley, then use jacks to lift the beam, remove the beam transport trolley, track and track beam below, and finally install the bridge bearings. Lower the jacks and place the beam on the bearings to complete the installation of one beam. Step 7: Repeat the above steps to complete the installation of other beams and slabs.

[0007] Secondly, the bridge precast beam slab translation and installation device provided in this application adopts the following technical solution: A bridge precast beam slab translation and installation device includes a beam transport trolley and a limiting mechanism. The limiting mechanism includes limiting rods that are rotatably disposed on the side walls of the beam transport trolley at intervals. The rotation axis of the limiting rods is parallel to the forward direction of the beam transport trolley. The limiting rods are used to abut against the side walls of the beam slab. Sliding columns are slidably disposed on the beam transport trolley. The sliding direction of the sliding columns is set in the vertical direction. The sliding columns correspond one-to-one with the limiting rods. The sliding columns are used to abut against the bottom wall of the beam slab. A reset component is provided inside the beam transport trolley for pushing the sliding columns to slide upward. A transmission assembly is provided on the beam transport trolley. The transmission assembly is used to drive the corresponding limiting rod to rotate when the sliding column slides. When the sliding column slides toward the direction closer to the beam transport trolley, the limiting rod rotates toward the direction closer to the beam slab.

[0008] By adopting the above technical solution, when the beam is hoisted onto the beam transport trolley, the beam slides towards the beam transport trolley by pressing the sliding column. The limiting rod is adjusted to rotate towards the beam by adjusting the component, so that the limiting rod abuts against the side wall of the beam. The limiting rods on both sides of the beam transport trolley clamp the beam, so that the beam is not easy to shift left or right during the transport process. There is no need to accurately pre-embed rectangular bolts when pouring the beam, which is simple and convenient and reduces the workload of workers.

[0009] Preferably, a rotating shaft is coaxially mounted on the limiting rod, and the rotating shaft is rotatably mounted on the side wall of the beam transport trolley. The transmission assembly includes a first gear sleeved on the rotating shaft, a rack slidably mounted inside the beam transport trolley, and a driving member mounted inside the beam transport trolley. The rack and the first gear correspond one-to-one, and the rack is used to mesh with the corresponding first gear. The sliding direction of the rack is perpendicular to the sliding direction of the sliding column. The driving member is used to drive the rack to move when the sliding column slides. When the sliding column moves toward the beam transport trolley, the driving member drives the rack to slide away from the beam transport trolley.

[0010] By adopting the above technical solution, the beam is hoisted onto the beam transport trolley. When the beam moves towards the beam transport trolley by pressing the sliding column, the drive component drives the rack to move away from the beam transport trolley. This causes the rack to drive the first gear and the limiting rod to rotate towards the beam, so that the limiting rods on both sides abut against the beam, making it difficult for the beam to shift during transportation.

[0011] Preferably, the driving component includes an air storage channel disposed within the beam transport trolley, a first piston slidably disposed on the side of the air storage channel near the sliding column, and a second piston slidably disposed on the side of the air storage channel near the rack. The air storage channel corresponds one-to-one with the sliding column. The sliding direction of the first piston is parallel to the sliding direction of the corresponding sliding column. The sliding column is connected to the corresponding first piston. The sliding direction of the second piston is parallel to the sliding direction of the rack. The rack is connected to the corresponding second piston.

[0012] By adopting the above technical solution, when the sliding column drives the first piston to move towards the direction of the beam transport trolley, since the amount of air between the first piston and the second piston in the air storage channel is constant, it will push the second piston to drive the rack to slide away from the beam transport trolley, so that the rack drives the first gear and the limiting rod to rotate towards the direction of the beam plate, which helps to limit the beam plate on the beam transport trolley, which is simple and convenient.

[0013] Preferably, the reset component includes a spring for pushing the sliding column to slide upward. One end of the spring is disposed on the side of the first piston away from the sliding column, and the other end is disposed on the inner wall of the gas storage channel. The thrust of the spring is greater than the sum of the frictional force between the first piston and the gas storage channel and the frictional force between the second piston and the gas storage channel.

[0014] By adopting the above technical solution, when the beam is removed from the beam transport trolley, the spring pushes the sliding column and the first piston to move away from the beam transport trolley, thereby causing the second piston to drive the rack to slide towards the beam transport trolley, and causing the first gear and the limiting rod to rotate away from the beam, thus releasing the limitation on the beam; at the same time, it is helpful for the next use.

[0015] Preferably, a gear ring is coaxially provided on the limiting rods located at both ends of the beam transport trolley along its length. A polygonal rotating rod corresponding to the gear ring is rotatably provided on the beam transport trolley. A second gear is sleeved on the polygonal rotating rod. The second gear is located inside the corresponding gear ring and meshes with the corresponding gear ring. The number of teeth of the second gear is less than the number of teeth of the corresponding gear ring. An installation cylinder is sleeved on the end of the polygonal rotating rod away from the gear ring. A limiting plate is provided on the end of the installation cylinder away from the polygonal rotating rod. The limiting plate is used to abut against the end face of the beam in the length direction.

[0016] By adopting the above technical solution, when the limiting rod rotates towards the beam, the second gear rotates in the same direction through the gear ring, and the rotation angle of the polygonal rotating rod is greater than the rotation angle of the limiting rod. This causes the polygonal rotating rod to drive the mounting cylinder and the limiting plate to rotate towards the beam, so that the limiting plate abuts against the end face of the beam in the length direction. This can limit the forward and backward displacement of the beam. There is no need to pre-embed rectangular bolts, which is simple and convenient and helps to reduce the workload of workers.

[0017] Preferably, the mounting cylinder is slidably sleeved on the polygonal rotating rod, and the sliding direction of the mounting cylinder is parallel to the rotation axis of the limiting rod. A protrusion is provided on the side of the limiting plate away from the polygonal rotating rod. A guide plate is provided on the beam transport trolley, and the guide plate corresponds one-to-one with the protrusion. The guide plate is located on the side of the protrusion away from the corresponding mounting cylinder. A guide groove is opened on the side of the guide plate near the protrusion to slide with the protrusion. The guide groove includes a first groove and a second groove. The distance from the first groove to the polygonal rotating rod is greater than the distance from the second groove to the polygonal rotating rod. When the mounting cylinder rotates toward the direction closer to the beam plate, the protrusion slides from the first groove to the second groove.

[0018] By adopting the above technical solution, when the polygonal rotating rod drives the mounting cylinder and the limiting plate to rotate towards the beam plate, the protrusion slides along the first groove to the second groove, so that the second groove abuts against the mounting cylinder and slides a certain distance towards the polygonal rotating rod, so that the limiting plate abuts against the end face of the beam plate, thereby helping to reduce the friction of the limiting plate on the beam plate during the rotation of the beam plate.

[0019] Preferably, the limiting rod is hinged to an abutment plate on the side away from the rotation axis, and the hinge axis of the abutment plate is parallel to the rotation axis of the limiting rod. The abutment plate is used to abut against the side wall of the beam plate.

[0020] By adopting the above technical solution, the setting of the abutment plate increases the contact area with the side wall of the beam and improves the limiting effect. At the same time, the hinged setting of the abutment plate facilitates its fit with the side wall of the beam and slab.

[0021] Preferably, a bonding plate is slidably disposed on the side of the abutment plate near the beam plate, and the abutment plate abuts against the side wall of the beam plate through the bonding plate, wherein the sliding direction of the bonding plate is perpendicular to the rotation axis of the abutment plate.

[0022] By adopting the above technical solution, when the beam is removed from the beam transport trolley, the friction between the bonding plate and the beam can cause the bonding plate to slide on the abutment plate. Then, the limiting rod moves the abutment plate and the bonding plate away from the beam, so that the side wall of the beam is not easily worn during the removal process.

[0023] Preferably, the limiting plate is provided with a plurality of ball bearings on the side near the beam plate.

[0024] By adopting the above technical solution, the ball bearings ensure that the limiting plate does not easily rub against the end face of the beam plate during the process of removing the beam transport trolley.

[0025] In summary, this application includes at least one of the following beneficial technical effects: When the beam is hoisted onto the beam transport trolley, the beam slides towards the beam transport trolley by pressing the sliding column. The limiting rod is adjusted to rotate towards the beam by adjusting the component, so that the limiting rod abuts against the side wall of the beam. The limiting rods on both sides of the beam transport trolley clamp the beam, so that the beam is not easy to shift left and right during the transport process. There is no need to accurately pre-embed rectangular bolts when pouring the beam, which is simple and convenient and reduces the workload of workers. When the limiting rod rotates towards the beam, it drives the second gear to rotate in the same direction through the gear ring. The rotation angle of the polygonal rotating rod is greater than that of the limiting rod, causing the polygonal rotating rod to drive the mounting cylinder and the limiting plate to rotate towards the beam. This causes the limiting plate to abut against the end face of the beam along its length, thereby restricting the beam from shifting in the front and back directions. This eliminates the need for pre-embedded rectangular bolts, making it simple and convenient and helping to reduce the workload of workers. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0027] Figure 2 This is a cross-sectional view of the overall structure of an embodiment of this application.

[0028] Figure 3 yes Figure 2 Enlarged view of section A.

[0029] Figure 4 This is a partial exploded view of an embodiment of this application.

[0030] Figure 5 yes Figure 4 Enlarged view of section B.

[0031] The components are as follows: 1. Beam transport trolley; 2. Limiting rod; 3. Sliding column; 4. Transmission assembly; 41. First gear; 42. Rack; 43. Drive component; 431. Air storage channel; 432. First piston; 433. Second piston; 5. Rotating shaft; 6. Spring; 7. Gear ring; 8. Polygonal rotating rod; 9. Second gear; 10. Mounting cylinder; 11. Limiting plate; 12. Protrusion; 121. Connecting part; 122. Sliding part; 13. Guide plate; 14. Guide groove; 141. First groove; 142. Second groove; 15. Abutment plate; 16. Adhesive plate; 17. Ball bearing; 18. Guide block; 19. Slide groove; 20. Transmission rod; 21. Support plate. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0033] This application discloses a method for the translational installation of precast bridge beams. The method for the translational installation of precast bridge beams includes the following steps: Step 1: Install the track beam on the cap beam. The track beam is fixed by leaving embedded parts on the cap beam. Step 2: Fix the track onto the track beam; Step 3: Use beam transport trolley 1 to transport beams. Place beam transport trolley 1, which is equipped with a limiting mechanism, onto the track. The limiting mechanism is used to limit the beams so that the center lines of the track, track beam, and beam transport trolley 1 coincide. Step 4: Use a large trailer to transport the beam to the access road or bridge deck, and then lift the beam from the access road or bridge deck onto the beam transport trolley 1. At this time, activate the limiting mechanism to limit the beam, and then connect the winch on the track beam to the beam transport trolley 1. Step 5: Use a winch to pull the beam transport trolley 1 to transport the beam until it reaches the preset installation position, and then lock the wheels of the beam transport trolley 1. Step 6: Disconnect the winch from the beam transport trolley 1, then use jacks to lift the beam, remove the beam transport trolley 1, track and track beam below, and finally install the bridge bearings. Lower the jacks and place the beam on the bearings to complete the installation of one beam. Step 7: Repeat the above steps to complete the installation of other beams and slabs.

[0034] This application also discloses a translation installation device for the above-described bridge precast beam translation installation method. (Refer to...) Figure 1 and Figure 2 The bridge precast beam slab translation and installation device includes a beam transport trolley 1 and a limiting mechanism. The limiting mechanism includes limiting rods 2 that are rotatably arranged on both sides of the beam transport trolley 1. The limiting rods 2 on both sides of the beam transport trolley 1 are symmetrically arranged. The rotation axis of the limiting rods 2 is parallel to the length direction of the beam transport trolley 1. The length direction of the beam transport trolley 1 is the forward direction of the beam transport trolley 1.

[0035] Reference Figure 2 and Figure 3A rotating shaft 5 is coaxially fixed to the limiting rod 2. The rotating shaft 5 is rotatably mounted on the side wall of the beam transport trolley 1. An abutment plate 15 is hinged to the side of the limiting rod 2 away from the rotating shaft 5. The hinge axis of the abutment plate 15 is parallel to the rotation axis of the limiting rod 2. The distance from the hinge axis of the abutment plate 15 to the end of the limiting rod 2 away from the rotating shaft 5 is less than the distance from the hinge axis of the abutment plate 15 to the end of the limiting rod 2 near the rotating shaft 5. A bonding plate 16 is slidably mounted on the side of the abutment plate 15 near the beam. The sliding direction of the bonding plate 16 is perpendicular to the rotation axis of the abutment plate 15. The bonding plate 16 is used to abut against the side wall of the beam. An elastic pad (not shown in the figure) is adhered to the side of the bonding plate 16 near the beam to improve the abutment effect. A guide block 18 is fixed on one side of the 5. The cross-section of the guide block 18 is T-shaped. The side of the abutment plate 15 near the bonding plate 16 is provided with a sliding groove 19 that slides with the guide block 18, which helps to improve the sliding effect of the bonding plate 16. A sliding column 3 is slidably arranged on the beam transport trolley 1. The sliding direction of the sliding column 3 is set in the vertical direction. The sliding column 3 corresponds one-to-one with the limiting rod 2. The sliding column 3 is used to abut against the bottom wall of the beam plate. A reset component is provided in the beam transport trolley 1 to push the sliding column 3 to slide upward. A transmission component 4 is provided on the beam transport trolley 1. The transmission component 4 is used to drive the limiting rod 2 to rotate when the sliding column 3 slides. When the sliding column 3 slides towards the direction of the beam transport trolley 1, the limiting rod 2 rotates upward towards the direction of the beam plate.

[0036] Reference Figure 2 and Figure 3To facilitate the rotation of the limiting rod 2, the transmission assembly 4 includes a first gear 41 fixedly sleeved on the rotating shaft 5, a rack 42 slidably disposed within the beam transport trolley 1, and a driving member 43 disposed within the beam transport trolley 1. The rack 42 and the first gear 41 correspond one-to-one, with the rack 42 located below the corresponding first gear 41. The sliding direction of the rack 42 is perpendicular to the sliding direction of the sliding column 3. The rack 42 is used to mesh with the corresponding first gear 41. The driving member 43 is used to drive the rack 42 to move when the sliding column 3 slides. When the sliding column 3 moves toward the direction closer to the beam transport trolley 1, the driving member 43 drives the rack 42 to slide away from the beam transport trolley 1. The driving member 43 includes an air storage channel 431 opened within the beam transport trolley 1 and a drive member 43 slidably disposed within the air storage channel 431. A first piston 432 near the sliding column 3 and a second piston 433 slidably disposed on the side of the gas storage channel 431 near the rack 42. The gas storage channel 431 corresponds one-to-one with the sliding column 3. The longitudinal section of the gas storage channel 431 is L-shaped. The sliding column 3 slides in the gas storage channel 431. The sliding direction of the first piston 432 is parallel to the sliding direction of the corresponding sliding column 3. The sliding column 3 is fixedly connected to the corresponding first piston 432. The sliding column 3 is located on the side of the first piston 432 away from the gas storage channel 431. The sliding direction of the second piston 433 is parallel to the sliding direction of the rack 42. The rack 42 slides in the end of the gas storage channel 431 away from the sliding column 3. The rack 42 and the side of the corresponding second piston 433 away from the gas storage channel 431 are fixedly connected.

[0037] Reference Figure 2 and Figure 3 The reset component includes a spring 6 for pushing the sliding column 3 upward. One end of the spring 6 is fixedly connected to the side of the first piston 432 away from the sliding column 3, and the other end is fixedly connected to the inner wall of the gas storage channel 431. The extension direction of the spring 6 is parallel to the sliding direction of the sliding column 3. The thrust of the spring 6 is greater than the sum of the frictional force between the first piston 432 and the inner wall of the gas storage channel 431, the frictional force between the second piston 433 and the inner wall of the gas storage channel 431, and the frictional force between the rack 42 and the first gear 41.

[0038] When the beam is hoisted onto the beam transport trolley 1, the bottom wall of the beam gradually presses against the sliding column 3, causing the sliding column 3 to move towards the beam transport trolley 1 and compress the corresponding spring 6. Since the amount of air between the first piston 432 and the second piston 433 in the air storage channel 431 is constant, when the first piston 432 slides towards the second piston 433, it pushes the second piston 433 and the rack 42 to slide away from the beam transport trolley 1. The rack 42 drives the first gear 41 and the limiting rod 2 to rotate towards the beam until the sliding column 3 completely slides into the air storage channel 431. At this time, the bonding plate 16 abuts against the side wall of the beam, realizing that the bonding plates 16 on both sides of the beam transport trolley 1 limit the beam, making it difficult for the beam to shift. There is no need to pre-embed the limiting rectangular bolts when pouring the beam, which is simple and convenient and helps to reduce the workload. When the beam is removed from the beam transport trolley 1, due to the friction between the side wall of the beam and the padding layer on the bonding plate 16, the beam moves upward and causes the bonding plate 16 to slide on the abutment plate 15, which helps to reduce the friction between the bonding plate 16 and the beam. At this time, the abutment force of the beam on the sliding column 3 is reduced. The compressed spring 6 pushes the first piston 432 to drive the sliding column 3 to slide away from the beam transport trolley 1 for reset. At the same time, it drives the second piston 433 and the rack 42 to slide towards the air storage channel 431. The rack 42 drives the first gear 41 and the limiting rod 2 to rotate away from the beam. The limiting rod 2 drives the abutment plate 15 and the bonding plate 16 away from the beam. At this time, the beam can be removed from the beam transport trolley 1. The limiting rod 2 rotates to abut against the side of the beam transport trolley 1 for storage, reducing the space occupied and facilitating the next use.

[0039] Reference Figure 4 and Figure 5 The limiting rods 2 located at both ends of the beam transport trolley 1 along the length direction are connected by rotating shafts 5 (see reference). Figure 3A transmission rod 20 is coaxially fixed, extending away from the beam-carrying trolley 1. A gear ring 7 is fixedly fitted onto the end of the transmission rod 20 away from the limiting rod 2. A fixed plate 22, corresponding to the gear ring 7, is fixedly installed on the beam-carrying trolley 1. A polygonal rotating rod 8 is rotatably mounted on the fixed plate 22, with its rotation axis parallel to the rotation axis of the limiting rod 2. The polygonal rotating rod 8 has a rectangular cross-section and is located on the side of the gear ring 7 away from the limiting rod 2. A second gear 9 is fixedly fitted onto the polygonal rotating rod 8. Inside the corresponding gear ring 7, the second gear 9 meshes with the corresponding gear ring 7. The number of teeth of the second gear 9 is less than the number of teeth of the corresponding gear ring 7. The end of the polygonal rotating rod 8 away from the gear ring 7 is slidably fitted with an installation cylinder 10. The sliding direction of the installation cylinder 10 is parallel to the rotation axis of the limiting rod 2. The end of the installation cylinder 10 away from the polygonal rotating rod 8 is fixedly connected to a limiting plate 11. The limiting plate 11 is located on one side of the beam transport trolley 1 along its length. The limiting plate 11 is used to abut against the end face of the beam along its length. Multiple ball bearings 17 are movably embedded on the side of the limiting plate 11 near the beam (see reference). Figure 2 This helps reduce the friction between the limiting plate 11 and the beam plate when the plate rotates.

[0040] Reference Figure 4 and Figure 5 A protrusion 12 is fixed to the side of the limiting plate 11 away from the polygonal rotating rod 8. The protrusion 12 includes a connecting part 121 fixedly connected to the side of the limiting plate 11 away from the polygonal rotating rod 8 and a sliding part 122 fixed to the end of the connecting part 121 away from the limiting plate 11. Both the connecting part 121 and the sliding part 122 are cylindrical, and the diameter of the sliding part 122 is larger than the diameter of the connecting part 121. A support plate 21 is fixed to the end face of the beam transport trolley 1 in the length direction. The support plate 21 and the protrusion 12 correspond one-to-one. A certain number of parts are fixed on the support plate 21. The guide plate 13 is located on the side of the corresponding protrusion 12 away from the mounting cylinder 10. The guide plate 13 has a guide groove 14 that slides with the sliding part 122 on the side near the protrusion 12. The guide groove 14 includes a first groove 141 and a second groove 142. The distance from the first groove 141 to the polygonal rotating rod 8 is greater than the distance from the second groove 142 to the polygonal rotating rod 8. When the mounting cylinder 10 rotates toward the direction closer to the beam plate, the sliding part 122 slides from the first groove 141 to the second groove 142.

[0041] When the limiting rod 2 rotates towards the beam plate, it drives the gear ring 7 to rotate via the transmission rod 20. The gear ring 7 drives the second gear 9 to rotate in the same direction. Since the number of teeth on the gear ring 7 is greater than the number of teeth on the second gear 9, the rotation angle of the second gear 9 is greater than the rotation angle of the limiting rod 2. The second gear 9 drives the polygonal rotating rod 8, the mounting cylinder 10, and the limiting plate 11 to rotate, causing the limiting plate 11 to rotate towards the beam plate. At this time, the sliding part 122 slides along the first groove 141 to the second groove 142. The second groove 142 abuts against the limiting plate 11 and rotates towards the beam plate, causing the limiting plate 11 to rotate towards the beam plate. The limiting plate 11 abuts against the end face of the beam, thereby restricting the forward and backward movement of the beam. As the limiting plate 11 rotates, it gradually moves closer to the beam, which helps to reduce the friction between the limiting plate 11 and the end face of the beam. When the limiting rod 2 rotates away from the beam, the polygonal rotating rod 8 drives the mounting cylinder 10 and the limiting plate 11 to rotate away from the beam through the transmission of the gear ring 7 and the second gear 9. At this time, the sliding part 122 slides from the second groove 142 to the first groove 141, pulling the mounting cylinder 10 and the limiting plate 11 to move away from the beam, which helps to reduce the wear on the beam.

[0042] The implementation principle of this application embodiment is as follows: When the beam is hoisted onto the beam transport trolley 1, the bottom wall of the beam gradually presses against the sliding column 3, causing the sliding column 3 to move towards the beam transport trolley 1. The first piston 432 pushes the second piston 433 and the rack 42 to slide away from the beam transport trolley 1. The rack 42 drives the first gear 41 and the limiting rod 2 to rotate towards the beam. At this time, the transmission rod 20 drives the gear ring 7 to rotate, the gear ring 7 drives the second gear 9 to rotate in the same direction, and the second gear 9 drives the polygonal rotating rod 8, the mounting cylinder 10, and the limiting plate 11 to rotate, causing the limiting plate 11 to move towards the beam. Rotate towards the beam slab. At this time, the sliding part 122 slides along the first groove 141 to the second groove 142. The second groove 142 abuts against the limiting plate 11 and moves towards the beam slab until the sliding column 3 is completely slid into the gas storage channel 431. At this time, the pad on the bonding plate 16 abuts against the side wall of the beam slab, and the limiting plate 11 abuts against the end face of the beam slab, thereby limiting the beam slab in front, behind, left, and right. This makes it difficult for the beam slab to shift during the transport of the beam trolley 1. During the operation, there is no need to pre-embed the limiting rectangular bolts when pouring the beam slab, which is simple and convenient and helps to reduce the workload.

[0043] When the beam is removed from the beam transport trolley 1, the beam moves upward, causing the bonding plate 16 to slide on the abutment plate 15, which helps reduce the friction between the bonding plate 16 and the beam. At this time, the abutment force of the beam on the sliding column 3 decreases, and the compressed spring 6 pushes the first piston 432, causing the sliding column 3 to slide away from the beam transport trolley 1. The first piston 432, through a fixed amount of air, drives the second piston 433 and the rack 42 to slide towards the air storage channel 431. The rack 42 drives the first gear 41 and the limiting rod 2 to slide away from the beam. As the beam plate rotates, the limiting rod 2 drives the abutment plate 15 and the bonding plate 16 away from the beam plate. Through the transmission of the gear ring 7 and the second gear 9, the polygonal rotating rod 8 drives the mounting cylinder 10 and the limiting plate 11 to rotate away from the beam plate. At this time, the sliding part 122 slides from the second groove 142 to the first groove 141, pulling the mounting cylinder 10 and the limiting plate 11 to move away from the beam plate. Then, the beam plate is removed from the beam transport trolley 1. The limiting rod 2 and the limiting plate 11 rotate to abut against the side of the beam transport trolley 1 for storage, reducing the space occupied.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bridge precast beam slab translation and installation device, characterized in that: The system includes a beam transport trolley (1) and a limiting mechanism. The limiting mechanism includes limiting rods (2) that are rotatably mounted on the side walls of the beam transport trolley (1) at intervals. The rotation axis of the limiting rods (2) is parallel to the forward direction of the beam transport trolley (1). The limiting rods (2) are used to abut against the side walls of the beam. A sliding column (3) is slidably mounted on the beam transport trolley (1). The sliding direction of the sliding column (3) is set vertically. The sliding column (3) and the limiting rods (2) are aligned. In a corresponding manner, the sliding column (3) is used to abut against the bottom wall of the beam plate, and the beam transport trolley (1) is provided with a reset component for pushing the sliding column (3) to slide upward. The beam transport trolley (1) is provided with a transmission assembly (4), which is used to drive the corresponding limiting rod (2) to rotate when the sliding column (3) slides. When the sliding column (3) slides towards the direction close to the beam transport trolley (1), the limiting rod (2) rotates towards the direction close to the beam plate. The beam transport trolley (1) has a toothed ring (7) coaxially arranged on the limiting rod (2) at both ends of the beam transport trolley (1). The beam transport trolley (1) has a polygonal rotating rod (8) that corresponds one-to-one with the toothed ring (7). A second gear (9) is sleeved on the polygonal rotating rod (8). The second gear (9) is located in the corresponding toothed ring (7). The second gear (9) meshes with the corresponding toothed ring (7). The number of teeth of the second gear (9) is less than the number of teeth of the corresponding toothed ring (7). An installation cylinder (10) is sleeved on the end of the polygonal rotating rod (8) away from the toothed ring (7). A limiting plate (11) is provided on the end of the installation cylinder (10) away from the polygonal rotating rod (8). The limiting plate (11) is used to abut against the end face of the beam in the length direction. The mounting cylinder (10) is slidably sleeved on the polygonal rotating rod (8). The sliding direction of the mounting cylinder (10) is parallel to the rotation axis of the limiting rod (2). A protrusion (12) is provided on the side of the limiting plate (11) away from the polygonal rotating rod (8). A guide plate (13) is provided on the beam transport trolley (1). The guide plate (13) corresponds one-to-one with the protrusion (12). The guide plate (13) is located on the side of the protrusion (12) away from the corresponding mounting cylinder (10). A guide groove (14) is provided on the side near the protrusion (12) to slide with the protrusion (12). The guide groove (14) includes a first groove (141) and a second groove (142). The distance from the first groove (141) to the polygonal rotating rod (8) is greater than the distance from the second groove (142) to the polygonal rotating rod (8). When the mounting cylinder (10) rotates toward the direction close to the beam plate, the protrusion (12) slides from the first groove (141) to the second groove (142).

2. The bridge precast beam slab translation and installation device according to claim 1, characterized in that: A rotating shaft (5) is coaxially arranged on the limiting rod (2). The rotating shaft (5) is rotatably arranged on the side wall of the beam transport trolley (1). The transmission assembly (4) includes a first gear (41) sleeved on the rotating shaft (5), a rack (42) slidably arranged in the beam transport trolley (1), and a driving member (43) arranged in the beam transport trolley (1). The rack (42) and the first gear (41) correspond one-to-one. The rack (42) is used to mesh with the corresponding first gear (41). The sliding direction of the rack (42) is perpendicular to the sliding direction of the sliding column (3). The driving member (43) is used to drive the rack (42) to move when the sliding column (3) slides. When the sliding column (3) moves toward the direction closer to the beam transport trolley (1), the driving member (43) drives the rack (42) to slide away from the beam transport trolley (1).

3. The bridge precast beam slab translation and installation device according to claim 2, characterized in that: The drive component (43) includes an air storage channel (431) disposed in the beam transport trolley (1), a first piston (432) slidably disposed on the side of the air storage channel (431) near the sliding column (3), and a second piston (433) slidably disposed on the side of the air storage channel (431) near the rack (42). The air storage channel (431) corresponds one-to-one with the sliding column (3). The sliding direction of the first piston (432) is parallel to the sliding direction of the corresponding sliding column (3). The sliding column (3) is connected to the corresponding first piston (432). The sliding direction of the second piston (433) is parallel to the sliding direction of the rack (42). The rack (42) is connected to the corresponding second piston (433).

4. The bridge precast beam slab translation and installation device according to claim 2, characterized in that: The reset component includes a spring (6) for pushing the sliding column (3) to slide upward. One end of the spring (6) is located on the side of the first piston (432) away from the sliding column (3), and the other end is located on the inner wall of the gas storage channel (431). The thrust of the spring (6) is greater than the sum of the frictional force between the first piston (432) and the gas storage channel (431) and the frictional force between the second piston (433) and the gas storage channel (431).

5. The bridge precast beam slab translation and installation device according to claim 2, characterized in that: The limiting rod (2) is hinged to an abutment plate (15) on the side away from the rotating shaft (5). The hinge axis of the abutment plate (15) is parallel to the rotation axis of the limiting rod (2). The abutment plate (15) is used to abut against the side wall of the beam plate.

6. The bridge precast beam slab translation and installation device according to claim 5, characterized in that: The abutment plate (15) is slidably provided with a bonding plate (16) on the side near the beam plate. The abutment plate (15) abuts against the side wall of the beam plate through the bonding plate (16). The sliding direction of the bonding plate (16) is perpendicular to the rotation axis of the abutment plate (15).

7. The bridge precast beam slab translation and installation device according to claim 2, characterized in that: The limiting plate (11) is provided with multiple ball bearings (17) on the side near the beam plate.

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