A steel-concrete composite beam transfer and hoisting device

Abstract

This utility model relates to the field of steel-concrete composite beam hoisting technology, specifically disclosing a steel-concrete composite beam transfer and hoisting device. It includes a steel reinforcement base frame, with a precast bridge deck connected to the top of the base frame and a sling connected to the bottom. Abutment blocks are connected to the side walls of the slings, and each abutment block has a movable cavity inside. Contraction grooves are provided on both sides of the movable cavity, and abutment blocks are connected within the contraction grooves. A displacement block is provided on one side of each abutment block, and a rotating rod is connected to the center of the movable cavity, passing through two displacement blocks. The device uses a fitting block to deform and tighten the sling, fixing its position so that it fits snugly against the top of the precast bridge deck. This restricts the bridge deck from tilting laterally and causing uneven load distribution.

Description

Technical Field

[0001] This utility model relates to the field of steel-concrete composite beam hoisting technology, and more specifically, to a steel-concrete composite beam transfer and hoisting device. Background Technology

[0002] The hoisting of steel-concrete composite beams refers to the construction steps of lifting and transferring precast slabs together with the bottom reinforcing bars using slings.

[0003] The existing slings are used to lift the steel-concrete composite beam by wrapping around the bottom of the bottom reinforcement. However, during the lifting and transportation process, the steel-concrete composite beam may slip on the slings due to the shaking during transportation. This causes it to lose its center position on the slings, resulting in the steel-concrete composite beam tilting and causing damage to the load on one side of the slings. Utility Model Content

[0004] The purpose of this utility model is to provide a steel-concrete composite beam transfer and hoisting device, which solves the problem that during the transfer of steel-concrete composite beams, the beams slide and tilt on the slings due to shaking, which can easily cause damage to the slings due to uneven load.

[0005] This utility model is achieved through the following technical solution: This utility model provides a steel-concrete composite beam transfer and hoisting device, including a steel reinforcement base frame, a precast bridge deck connected to the top of the steel reinforcement base frame, a sling connected to the bottom of the steel reinforcement base frame, a fitting block connected to the side wall of the sling, a movable cavity provided inside the fitting block, a contraction groove provided on both sides of the movable cavity, an abutment block connected in the contraction groove, a displacement block provided on one side of the abutment block, and a rotating rod connected in the middle of the movable cavity, the rotating rod passing through the two displacement blocks.

[0006] Preferably, the prefabricated bridge deck is provided in several interconnected sections.

[0007] Preferably, the two bonding blocks are connected in an alternating manner, and the sling passes between the two bonding blocks.

[0008] Preferably, the top of the rotating rod protrudes from the top of the bonding block, and a disc is provided on the portion of the rotating rod protruding from the top of the bonding block.

[0009] Preferably, the rotating rod also includes a pin that is connected to the top disk of the rotating rod.

[0010] Preferably, the bonding block further includes a through opening and an arc-shaped groove, with the through opening located in the middle of the displacement block and the arc-shaped groove located at one end of the abutment block.

[0011] Preferably, the through opening cooperates with the rotating rod, and a rack is provided on one side of the middle of the through opening of the two displacement blocks, with the racks in the two through openings being arranged in opposite positions.

[0012] Preferably, the arc-shaped groove is located at the end of the abutment block closest to the sling.

[0013] Preferably, the movable cavity is further provided with grooves on both sides to cooperate with the displacement block.

[0014] The technical solution of this utility model has at least the following advantages and beneficial effects: 1. The device uses a bonding block to deform and tighten the sling, thus fixing the position of the bonding block so that it can fit against the top of the precast bridge deck. This restricts the bridge deck from tilting to the left or right, preventing uneven load distribution. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a front view structural diagram of the present invention.

[0017] Figure 3 This utility model Figure 2 A magnified structural diagram of point A in the middle.

[0018] Figure 4 This is a schematic diagram of the overall structure of the bonding block of this utility model.

[0019] Figure 5 This is a schematic diagram of the state of the abutment block of this utility model.

[0020] Reference numerals: 1-reinforced frame, 2-precast bridge deck, 3-suspension cable, 301-fitting block, 302-movable cavity, 3021-shrinkage groove, 303-rotating rod, 3031-pin, 304-abutting block, 3041-displacement block, 3042-through opening, 3043-arc groove. Detailed Implementation

[0021] The following is combined Figures 1 to 5 This utility model will be described in detail.

[0022] A steel-concrete composite beam transfer and hoisting device includes a steel reinforcement base frame 1, a precast bridge deck 2 connected to the top of the steel reinforcement base frame 1, a sling 3 connected to the bottom of the steel reinforcement base frame 1, a fitting block 301 connected to the side wall of the sling 3, a movable cavity 302 provided inside the fitting block 301, a shrinkage groove 3021 provided on both sides of the movable cavity 302, an abutment block 304 connected in the shrinkage groove 3021, a displacement block 3041 provided on one side of the abutment block 304, a rotating rod 303 connected in the middle of the movable cavity 302, the rotating rod 303 passing through two displacement blocks 3041 and connecting them, and several precast bridge decks 2 are provided and spliced ​​together.

[0023] First, several precast bridge panels 2 are spliced ​​onto the steel frame 1. The precast bridge panels 2 are connected to each other as a whole through wet joints. At the same time, they are also connected to the steel frame 1 through wet joints. Then, the slings 3 are wrapped around the bottom of the steel frame 1, and the entire precast bridge panel 2 and steel frame 1 are transported and assembled by lifting equipment.

[0024] Furthermore, the two mating blocks 301 are connected in an alternating manner, the sling 3 passes between the two mating blocks 301, the top of the rotating rod 303 protrudes from the top of the mating blocks 301, and a disc is provided on the part of the rotating rod 303 protruding from the top of the mating blocks 301. The rotating rod 303 also includes a pin 3031, which is connected to the disc at the top of the rotating rod 303. The mating blocks 301 also include a through opening 3042 and an arc-shaped groove 3043. 2 is set in the middle of the displacement block 3041, the arc groove 3043 is set at one end of the abutment block 304, the through opening 3042 cooperates with the rotating rod 303, a rack is set on one side of the middle of the through opening 3042 of the two displacement blocks 3041, the racks in the two through openings 3042 are set in opposite positions, the arc groove 3043 is set at one end of the abutment block 304 near the sling 3, and grooves that cooperate with the displacement block 3041 are also set on both sides of the movable cavity 302.

[0025] Then, before the sling 3 is fully taut, the bonding block 301 is moved to a position close to the top of the precast bridge deck 2, so that the bottom of the bonding block 301 is in contact with the top of the precast bridge deck 2. Then, the disc of the protruding part of the rotating rod 303 is rotated by manual control, so that the rotating rod 303 will rotate through the through opening 3042 in the two displacement blocks 3041. Then, because the gear on the side wall of the rotating rod 303 meshes with the rack on one side of the middle of the two through openings 3042, the rotating rod 303 will drive the displacement blocks 3041 to move when it rotates. Since the racks of the two through openings 3042 are set in opposite positions, the displacement of the two displacement blocks 3041 driven by the rotation of the rotating rod 303 is a relative displacement.

[0026] This allows the two abutment blocks 304 to move closer to the center, and then apply pressure to the suspender cable 3 through the arc groove 3043. This causes the suspender cable 3, which is not fully taut, to bend to a certain extent. It then passes through the two abutment blocks 304 and rubs against each other, thus limiting the position of the fitting block 301 and locking the position of the suspender cable 3. The fitting block 301 abuts against the top surface of the precast bridge deck 2 and forms a wrapping frame with the suspender cable 3. This forms a wrapping frame connection between the precast bridge deck 2 and the steel frame 1, so that the movement of the precast bridge deck 2 and the steel frame 1 is limited to the space formed by the fitting block 301 and the suspender cable 3, and there will be no tilting or eccentric loading.

[0027] Meanwhile, the bonding block 301 is only bonded to the top of the precast bridge deck 2 for certain auxiliary limiting. It is used to compensate for the tilting pressure on the sling 3 on one side when the precast bridge deck 2 has a tendency to tilt, and to apply a certain limiting force so that the precast bridge deck 2 will not easily tilt or be unbalanced due to shaking during hoisting and transportation.

[0028] Finally, the abutment block 304 will press against the sling 3 and press against the inner wall of the movable cavity 302 to further restrict the sling 3. By attaching the fitting block 301 to the top of the precast bridge panel 2, the fitting block 301 will press against the top two sides of the precast bridge panel 2 during hoisting and transportation of the precast bridge panel 2 and the steel frame 1, thereby pressing the precast bridge panel 2 to a certain extent. This will prevent the precast bridge panel 2 and the steel frame 1 from tilting during transportation, which would change the load-bearing capacity of the sling 3 on both sides, cause it to tilt, increase the pressure on the sling 3 and cause damage, and also make it inconvenient to lower and assemble the precast bridge panel 2 and the steel frame 1 if they tilt.

[0029] The following is the specific implementation process of this utility model. First, several prefabricated bridge panels 2 are spliced ​​on the steel frame 1. The prefabricated bridge panels 2 are made to form a whole through wet joints. At the same time, they are also connected to the steel frame 1 through wet joints. Then, the slings 3 are wrapped around the bottom of the steel frame 1. The entire prefabricated bridge panel 2 and the steel frame 1 are transported and assembled by lifting equipment.

[0030] Then, before the sling 3 is fully taut, the bonding block 301 is moved to a position near the top of the precast bridge deck 2, so that the bottom of the bonding block 301 is in contact with the top of the precast bridge deck 2. Then, the disc of the protruding part of the rotating rod 303 is rotated by manual control, so that the rotating rod 303 rotates through the through opening 3042 in the two displacement blocks 3041. Then, because the gear on the side wall of the rotating rod 303 meshes with the rack on one side of the middle of the two through openings 3042, the rotating rod 303 will drive the displacement blocks 3041 to move when it rotates. Because the racks of the two through openings 3042 are set in opposite positions, the displacement of the two displacement blocks 3041 driven by the rotation of the rotating rod 303 is relative displacement, so that the two abutment blocks 304 will move closer to the center, and then through the arc groove 3043. The suspension cable 3 is pressed against the wall, causing it to bend slightly as it passes between two abutment blocks 304. This friction and engagement limits the position of the fitting block 301. Finally, the abutment block 304 presses against the suspension cable 3 and then against the inner wall of the movable cavity 302 to further restrict the suspension cable 3. The fitting block 301 is attached to the top of the precast bridge panel 2, ensuring that during the hoisting and transport of the precast bridge panel 2 and the steel frame 1, the fitting block 301 presses against the top sides of the precast bridge panel 2, thus preventing it from tilting during transport. This would change the load-bearing capacity of the suspension cables 3, causing them to overturn and increase the pressure on the cables, potentially damaging them. It would also prevent the precast bridge panel 2 and the steel frame 1 from tilting and hindering their lowering and assembly.

Claims

1. A steel-concrete composite beam transfer and hoisting device, comprising a steel reinforcement base frame (1), characterized in that, The top of the steel frame (1) is connected to a precast bridge deck (2), the bottom of the steel frame (1) is connected to a sling (3), the side wall of the sling (3) is connected to a fitting block (301), the fitting block (301) is provided with a movable cavity (302), the two sides of the movable cavity (302) are provided with shrinkage grooves (3021), the shrinkage grooves (3021) are connected to abutment blocks (304), a displacement block (3041) is provided on one side of the abutment block (304), and a rotating rod (303) is connected to the middle of the movable cavity (302), the rotating rod (303) passes through the two displacement blocks (3041) and connects them.

2. The steel-concrete composite beam transfer and hoisting device according to claim 1, characterized in that, The prefabricated bridge panel (2) is provided with several panels that are spliced ​​together.

3. The steel-concrete composite beam transfer and hoisting device according to claim 1, characterized in that, The two bonding blocks (301) are connected in an alternating manner, and the sling (3) passes between the two bonding blocks (301).

4. The steel-concrete composite beam transfer and hoisting device according to claim 1, characterized in that, The top of the rotating rod (303) protrudes from the top of the bonding block (301), and a disc is provided on the part of the rotating rod (303) that protrudes from the top of the bonding block (301).

5. The steel-concrete composite beam transfer and hoisting device according to claim 1, characterized in that, The rotating rod (303) also includes a pin (3031) which is connected to the top disk of the rotating rod (303).

6. The steel-concrete composite beam transfer and hoisting device according to claim 1, characterized in that, The bonding block (301) also includes a through opening (3042) and an arc groove (3043). The through opening (3042) is located in the middle of the displacement block (3041), and the arc groove (3043) is located at one end of the abutment block (304).

7. The steel-concrete composite beam transfer and hoisting device according to claim 6, characterized in that, The through opening (3042) cooperates with the rotating rod (303), and a rack is provided on one side of the middle of the through opening (3042) of the two displacement blocks (3041), and the racks in the two through openings (3042) are arranged in opposite positions.

8. The steel-concrete composite beam transfer and hoisting device according to claim 6, characterized in that, The arc-shaped groove (3043) is located at one end of the abutment block (304) near the sling (3).

9. The steel-concrete composite beam transfer and hoisting device according to claim 1, characterized in that, The movable cavity (302) is also provided with grooves on both sides that cooperate with the displacement block (3041).

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