Cantilever cast-in-situ bridge fabrication machine template hanging bracket assembly

Abstract

The invention discloses a cantilever cast-in-place bridge fabrication machine formwork hanging bracket assembly which comprises a cantilever cast-in-place bridge fabrication body and an upper beam arranged on the cantilever cast-in-place bridge fabrication body, C-shaped hooks are arranged on the two sides of the upper beam, main hanging bracket assemblies are arranged at the two ends of the upper beam, two auxiliary frames are further fixedly connected to the upper beam, and the auxiliary frames are fixedly connected to the upper beam. Conduction mechanisms are arranged in the two auxiliary frames; when the main hanging bracket assembly breaks down, the conduction mechanism and the auxiliary hanging bracket are clamped, so that the broken-down main hanging bracket assembly is locked and protected. The auxiliary frame with the conduction mechanism and the ratchet locking structure is arranged beside the main hanging bracket assembly, when a hydraulic cylinder of the main hanging bracket breaks down and loses pressure, the conduction mechanism can transmit loads to the auxiliary frame in time, a ratchet block and a ratchet bar which is arranged in the reverse direction are rapidly clamped through the driving assembly, rigid mechanical locking is formed, and the safety of the hydraulic cylinder of the main hanging bracket is improved. Therefore, the formwork hanging bracket is effectively prevented from accidentally falling due to failure of a hydraulic system.

Description

Technical Field

[0001] This invention relates to the field of bridge building machine technology, and specifically to a formwork hanger assembly for a cantilever cast-in-place bridge building machine. Background Technology

[0002] A cantilever bridge construction machine is a mobile piece of equipment used for segmented bridge construction. It extends the bridge cantilevered to both ends by symmetrically pouring concrete in segments on both sides of the pier and applying prestress. The formwork hoisting refers to the installation process of using the lifting system on the bridge construction machine to lift, position and fix the formwork used to form the concrete beam segments.

[0003] For example, application number 202510389569.X, entitled "A Bridge Building Machine," discloses a bridge building machine including an upper beam, C-shaped hooks, a main truss, an upper frame, a bottom basket, a template, and a hanger. The upper beam is installed above the top plate of a box girder, and a wing plate is provided on each side of the top plate. A C-shaped hook is provided at each end of the upper beam. The C-shaped hook includes a main body and an extension. The upper end of the main body is connected to the upper beam, the lower end of the main body is connected to the extension, and the end of the extension is connected to the hanger. The main truss is connected below the hanger, and the bottom basket is suspended below the main truss. The bottom basket includes a frame, an operating platform, and a guardrail. The frame includes crossbeams and longitudinal beams.

[0004] The shortcomings of the existing technology are: when the bridge construction machine formwork hanger assembly is working, it mainly relies on hydraulic cylinders for lifting and lowering. During the lifting and lowering process, all the weight of the equipment is transmitted to the upper beam through the hydraulic cylinders. The force exerted on the hydraulic cylinders is relatively large. Once the hydraulic cylinders malfunction, it is easy for the machine to fall due to excessive weight, which has certain shortcomings. Summary of the Invention

[0005] The purpose of this invention is to provide a formwork hanger assembly for a cantilever cast-in-place bridge construction machine to address the aforementioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cantilever cast-in-place bridge construction machine formwork hanger assembly, comprising a cantilever cast-in-place bridge body and an upper beam disposed on the cantilever cast-in-place bridge. C-shaped hooks are provided on both sides of the upper beam, and main hanger assemblies are provided at both ends of the upper beam. Two auxiliary frames are also fixedly connected to the upper beam, and each of the two auxiliary frames is provided with a transmission mechanism. When the main hanger assembly fails, the transmission mechanism and the auxiliary frame are locked together to lock and protect the failed main hanger assembly.

[0007] As a further description of the above technical solution: The main hanger assembly includes a pad frame fixedly connected to the upper beam, a hydraulic cylinder fixedly connected to the pad frame, a connecting block fixedly connected to the top of the hydraulic cylinder, and two anchor rods provided on the connecting block.

[0008] As a further description of the above technical solution: The transmission mechanism includes a slider that is slidably connected to the auxiliary frame, and the slider is rotatably connected to a corresponding connecting block via a transmission strip.

[0009] As a further description of the above technical solution: The auxiliary frame is provided with two sets of ratchet racks, and a U-shaped frame is fixedly connected to one side of the slider. The U-shaped frame is provided with a mating component that engages with the ratchet racks.

[0010] As a further description of the above technical solution: The mating assembly includes two ratchet blocks that are vertically slidably connected to the U-shaped frame, and a spring is also provided between the two ratchet blocks and the U-shaped frame.

[0011] As a further description of the above technical solution: The U-shaped frame is also provided with a drive assembly that drives the mating component to move down and locks it into a corresponding ratchet rack. The drive assembly includes an electric actuator fixedly connected to the U-shaped frame. A connecting plate is fixedly connected to the bottom end of the electric actuator. Two connecting strips are rotatably connected to the bottom end of the connecting plate. Two wedge blocks are slidably connected laterally in the U-shaped frame. Both wedge blocks are rotatably connected to the corresponding connecting strips. The ratchet blocks are provided with wedge grooves that are adapted to the wedge blocks.

[0012] As a further description of the above technical solution: The electric actuator is electrically connected to the hydraulic cylinder.

[0013] As a further description of the above technical solution: The ratchet teeth on two ratchet racks located in the same auxiliary frame are in opposite directions.

[0014] As a further description of the above technical solution: A horizontal bar is fixedly connected to the auxiliary frame, and the slider is slidably connected to the outside of the corresponding horizontal bar.

[0015] As a further description of the above technical solution: The bottom of the upper beam is also equipped with a support leg and a support lifting cylinder. The cantilever cast-in-place bridge body is equipped with a self-propelled track, and the support leg slides on the self-propelled track.

[0016] In the above technical solution, the cantilever cast-in-place bridge construction machine formwork hanger assembly provided by the present invention has the following beneficial effects: This invention provides an auxiliary frame with a transmission mechanism and a ratchet locking structure next to the main hanger assembly. When the hydraulic cylinder of the main hanger fails and loses pressure, the transmission mechanism can immediately transfer the load to the auxiliary frame, and the drive assembly can quickly lock the ratchet block with the ratchet rack set in the opposite direction to form a rigid mechanical lock. This effectively prevents the formwork hanger from falling accidentally due to hydraulic system failure, and greatly improves the safety and reliability of the cantilever cast-in-place construction process.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0018] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 This is a partial structural decomposition diagram provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the ratchet structure in the auxiliary frame provided in an embodiment of the present invention; Figure 4 This is a schematic diagram showing the connection between the structural slider and the U-shaped frame, etc., provided in an embodiment of the present invention. Figure 5 This is a longitudinal sectional view of the U-shaped frame structure provided in an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures: 1. Cantilever cast-in-place bridge structure; 2. Upper beam; 3. C-hook; 4. Auxiliary frame; 5. Pad frame; 6. Hydraulic cylinder; 7. Connecting block; 8. Anchor bolt; 9. Slider; 10. Conducting strip; 11. Ratchet; 12. U-shaped frame; 13. Ratchet block; 14. Spring; 15. Electric actuator; 16. Connecting plate; 17. Connecting strip; 18. Wedge block; 19. Wedge groove; 20. Crossbar. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure. Please see Figure 1-5 This embodiment provides a cantilever cast-in-place bridge construction machine formwork hanger assembly, including a cantilever cast-in-place bridge body 1 and an upper beam 2 installed on the cantilever cast-in-place bridge. The bottom of the upper beam 2 is also equipped with support legs and a support lifting cylinder. A self-propelled track is installed on the cantilever cast-in-place bridge body 1, and the support legs slide on the self-propelled track. C-shaped hooks 3 are installed on both sides of the upper beam 2. The cantilever cast-in-place bridge body 1 is the main support structure, on which the self-propelled track is installed. The upper beam 2 sits on the track via its bottom support legs and can move along the track. C-shaped hooks 3 are installed on both sides of the upper beam 2 to anchor the entire equipment to the already cast bridge segment. Main hanger assemblies are installed at both ends of the upper beam 2. The main hanger assemblies are the core components that bear the weight of the formwork system. The actuators are symmetrically arranged at both ends of the upper beam 2. Two auxiliary frames 4 are also fixedly connected to the upper beam 2, and each auxiliary frame 4 is equipped with a transmission mechanism. When the main hanger assembly fails, the transmission mechanism and the auxiliary frame are locked together to lock and protect the failed main hanger assembly. By setting auxiliary frames 4 with transmission mechanisms and ratchet locking structures next to the main hanger assembly, when the hydraulic cylinder 6 of the main hanger fails and loses pressure, the transmission mechanism can immediately transfer the load to the auxiliary frame 4, and through the drive component, the ratchet block 13 and the ratchet rack 11 set in the opposite direction are quickly locked together to form a rigid mechanical lock, thereby effectively preventing the formwork hanger from falling accidentally due to the failure of the hydraulic system, and greatly improving the safety and reliability of the cantilever cast-in-place construction process.

[0023] In a further embodiment of the present invention, the main hanger assembly includes a pad frame 5 fixedly connected to the upper beam 2, a hydraulic cylinder 6 fixedly connected to the pad frame 5, a connecting block 7 fixedly connected to the top of the hydraulic cylinder 6, two anchor rods 8 provided on the connecting block 7, the top of the piston rod of the hydraulic cylinder 6 connected to the connecting block 7, and two anchor rods 8 provided on the connecting block 7 for final connection and suspension of the template system below.

[0024] In a further embodiment of the present invention, the transmission mechanism includes a slider 9 slidably connected in an auxiliary frame 4. The slider 9 is rotatably connected to a corresponding connecting block 7 via a transmission strip 10. Two sets of ratchet racks 11 are provided in the auxiliary frame 4. A U-shaped frame 12 is fixedly connected to one side of the slider 9. A mating component that engages with the ratchet racks 11 is provided in the U-shaped frame 12. The mating component includes two ratchet blocks 13 vertically slidably connected in the U-shaped frame 12. A spring 14 is also provided between the two ratchet blocks 13 and the U-shaped frame 12. A driving component that drives the mating component to move down and engage with the corresponding ratchet rack 11 is also provided in the U-shaped frame 12. The driving component includes an electric push rod 15 fixedly connected in the U-shaped frame 12. A connecting plate 16 is fixedly connected to the bottom end of the electric push rod 15. Two connecting strips 17 are rotatably connected to the bottom end of the connecting plate 16. Two wedge blocks 18 are slidably connected laterally in the U-shaped frame 12. Both wedge blocks 18 are rotatably connected to the corresponding connecting strips 17. The ratchet blocks 13 are provided with... A wedge groove 19 is adapted to the wedge block 18. The electric actuator 15 is electrically connected to the hydraulic cylinder 6. A crossbar 20 is fixedly connected in the auxiliary frame 4. A slider 9 is slidably connected to the corresponding crossbar 20. Each auxiliary frame 4 has a crossbar 20, and a slider 9 can slide along the crossbar 20. The slider 9 is rotatably connected to the connecting block 7 of the main hanger assembly through a transmission strip 10. Therefore, the up and down movement of the connecting block 7 (representing the load of the template) can be driven by the transmission strip 10 to move the slider 9 in the auxiliary frame. When the hydraulic cylinder 6 works, it drives the electric push rod 15 to work synchronously. Through the cooperation of the connecting plate 16, connecting strip 17 and wedge block 18, it drives the two ratchet blocks 13 in the U-shaped frame 12 to move upward, so that the lifting and adjustment work can be carried out normally. When the hydraulic cylinder 6 fails, the electric push rod 15 drives the wedge block 18 to separate from the ratchet block 13. At this time, the ratchet block 13 is locked with the ratchet rack 11 under the action of the spring 14, so that the lifting and adjustment work stops after the failure.

[0025] In the embodiments provided by the present invention, the ratchet teeth on the two ratchet bars 11 located in the same auxiliary frame 4 are opposite in direction. No matter which direction the slider 9 tends to slide due to the weight of the template, the ratchet block 13 on one side will always lock against the ratchet bar 11 in the opposite direction, forming a rigid mechanical lock.

[0026] During normal construction, the operator controls the extension and retraction of the hydraulic cylinder 6, driving the connecting block 7 and the anchor rod 8 connected to it to rise or fall with the template system. During this process, the electric push rod 15 works synchronously with the hydraulic cylinder 6. The electric push rod 15 moves down first, and through the cooperation of the moving plate and the moving strip, it drives the wedge block 18 into the ratchet block 13, and drives the ratchet block 13 to move up and separate from the ratchet rack 11. The transmission strip 10 hinged to the connecting block 7 will push or pull the slider 9 to slide back and forth in the auxiliary frame 4.

[0027] When the hydraulic cylinder 6 suddenly loses pressure due to leakage, pipeline rupture or other faults, and is unable to maintain the load, the control system will immediately detect this abnormal state (such as a sudden drop in pressure) and send a power-off signal to the electric actuator 15. The electric actuator 15 retracts, pulling the moving connecting plate 16 upward. The connecting plate 16 drives the two wedge blocks 18 to slide laterally to both sides through the connecting strip 17, separating them from the wedge grooves 19 on the ratchet block 13. At this time, the ratchet block 13 will be firmly embedded in the ratchet racks 11 on both sides under the action of the spring 14, forming a rigid mechanical lock, thereby avoiding the template falling accident caused by the failure of the hydraulic cylinder 6.

[0028] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A formwork hanger assembly for a cantilever cast-in-place bridge construction machine, comprising a cantilever cast-in-place bridge body (1) and an upper beam (2) disposed on the cantilever cast-in-place bridge, wherein C-shaped hooks (3) are provided on both sides of the upper beam (2), characterized in that: Both ends of the upper beam (2) are provided with main hanger assemblies, and two auxiliary frames (4) are fixedly connected to the upper beam (2), and a transmission mechanism is provided in both auxiliary frames (4); When the main hanger assembly fails, the transmission mechanism and auxiliary mechanism are locked to lock and protect the faulty main hanger assembly.

2. The formwork hanger assembly for a cantilever cast-in-place bridge construction machine according to claim 1, characterized in that, The main hanger assembly includes a pad frame (5) fixedly connected to the upper beam (2), a hydraulic cylinder (6) fixedly connected to the pad frame (5), a connecting block (7) fixedly connected to the top of the hydraulic cylinder (6), and two anchor rods (8) provided on the connecting block (7).

3. The formwork hanger assembly for a cantilever cast-in-place bridge construction machine according to claim 2, characterized in that, The transmission mechanism includes a slider (9) slidably connected in the auxiliary frame (4), and the slider (9) is rotatably connected to the corresponding connecting block (7) through the transmission strip (10).

4. The formwork hanger assembly for a cantilever cast-in-place bridge construction machine according to claim 3, characterized in that, The auxiliary frame (4) is provided with two sets of ratchet racks (11), and a U-shaped frame (12) is fixedly connected to one side of the slider (9). The U-shaped frame (12) is provided with a mating component that engages with the ratchet racks (11).

5. The formwork hanger assembly for a cantilever cast-in-place bridge construction machine according to claim 4, characterized in that, The mating assembly includes two ratchet blocks (13) that are vertically slidably connected in the U-shaped frame (12), and a spring (14) is also provided between the two ratchet blocks (13) and the U-shaped frame (12).

6. The formwork hanger assembly for a cantilever cast-in-place bridge construction machine according to claim 5, characterized in that, The U-shaped frame (12) is also provided with a drive assembly that drives the mating component to move down and locks it with the corresponding ratchet rack (11). The drive assembly includes an electric push rod (15) fixedly connected in the U-shaped frame (12). The bottom end of the electric push rod (15) is fixedly connected to a connecting plate (16). The bottom end of the connecting plate (16) is rotatably connected to two connecting strips (17). Two wedge blocks (18) are slidably connected in the U-shaped frame (12). Both wedge blocks (18) are rotatably connected to the opposite connecting strip (17). The ratchet block (13) is provided with a wedge groove (19) that matches the wedge block (18).

7. The formwork hanger assembly for a cantilever cast-in-place bridge construction machine according to claim 6, characterized in that, The electric actuator (15) is electrically connected to the hydraulic cylinder (6).

8. The formwork hanger assembly for a cantilever cast-in-place bridge construction machine according to claim 4, characterized in that, The ratchet teeth on the two ratchet bars (11) located in the same auxiliary frame (4) are in opposite directions.

9. A formwork hanger assembly for a cantilever cast-in-place bridge construction machine according to claim 3, characterized in that, A crossbar (20) is fixedly connected in the auxiliary frame (4), and the slider (9) is slidably connected to the outside of the corresponding crossbar (20).

10. A formwork hanger assembly for a cantilever cast-in-place bridge construction machine according to claim 1, characterized in that, The bottom of the upper beam (2) is also provided with a support leg and a support lifting cylinder. The cantilever cast-in-place bridge body (1) is provided with a self-propelled track, and the support leg slides on the self-propelled track.

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