Large-section square pile reinforcement cage butt joint pile mouth fixing device

Abstract

This utility model belongs to the field of square pile construction, and in particular, it is a fixing device for the joint of a large-section square pile reinforcement cage. Addressing the problems of high construction difficulty, high segmented joint accuracy, and high support stability, which restrict the quality and efficiency of vertical reinforcement cage joint construction, the following solution is proposed: It includes supporting steel beams and reinforcing crossbeams, with two of each. Anchoring components are provided on the reinforcing crossbeams to provide support points for the sling assembly. The anchoring components are also equipped with sling assemblies for binding the reinforcement cage hoisted to the pile head. Through the sling assembly, this utility model ensures the accurate and stable position of the reinforcement cage during hoisting, jointing, and fixing, effectively improving the convenience and safety of construction operations and guaranteeing high quality and efficiency in the joint construction of large-section square pile reinforcement cages.

Description

Technical Field

[0001] This utility model relates to the field of square pile construction technology, and in particular to a fixing device for the joint of a large-section square pile reinforcement cage. Background Technology

[0002] Rectangular piles have the characteristics of high bearing capacity, good structural bending resistance, small deformation, and good stability. They are an effective engineering measure to solve the problems of slope stability, soft and unstable foundations, and liquefiable foundations in adverse geological conditions. They are widely used in engineering construction in fields such as rock mass reinforcement in water conservancy and hydropower, bank slope protection, port and shipping terminal reinforcement, bank slope reinforcement, foundation reinforcement of municipal and civil buildings, and foundation reinforcement of large bridges and culverts. In particular, with the promotion and application of rotary drilling and milling technology for square piles, the application and development of large-section square pile foundations and rock reinforcement technology with structural dimensions (length × width) of 3×2m, 3×2.5m, and 4×2.5m are rapid.

[0003] 1. Traditional square piles often require manual core extraction with small machinery or blasting excavation. The operation inside the pile is a closed and narrow space, which results in a poor working environment, high safety risks, and susceptibility to groundwater and other factors. This leads to low construction efficiency, long construction time, and is not conducive to the timely handling of urgent, difficult, and dangerous projects.

[0004] 2. The vertical reinforcement bars of square piles are often arranged in multiple rows in an irregular pattern. The reinforcement cage is often manufactured and transported in sections. After pre-assembly, it is vertically hoisted into the hole and the pile opening is fixed with temporary steel bars or steel cross braces. The vertical section hoisting and docking is done section by section into the hole. The overall hoisting usually has high requirements for hoisting equipment and hoisting site, and the amount of temporary auxiliary works is large, resulting in high construction costs. Sectional hoisting can reduce the performance of hoisting equipment and save on temporary site requisition, but the accuracy of the section docking at the pile opening and the stability of the support are difficult. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies, such as high construction difficulty, high segmented connection accuracy, and high support stability, which restrict the construction quality and efficiency of vertical steel bar connection construction of steel cages. Therefore, this utility model proposes a fixing device for the connection of steel cages of large cross-section square piles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A fixing device for the butt joint of a large-section square pile reinforcement cage includes:

[0008] The support steel beams and reinforcing crossbeams are provided in twos, and the two support steel beams and reinforcing crossbeams are welded together to form a rectangular frame.

[0009] An anchoring assembly is provided on the reinforcing beam. The anchoring assembly is used to provide a support point for the sling assembly. The anchoring assembly is also provided with a sling assembly, which is used to bind the steel cage hoisted to the pile opening.

[0010] In one possible design, the anchoring assembly includes multiple support seats that are fixedly disposed on the top of two reinforcing beams and are evenly distributed. Each of the multiple support seats has a through hole on one side. Two support plates are symmetrically fixedly disposed on the front side of each of the multiple support seats. The bottom of the support plates is fixedly connected to the top of the reinforcing beams. A U-shaped pad is fixedly disposed on both sides of the multiple support seats. The bottom of the pad is located on the front side of the support seat and is fixedly connected to the top of the reinforcing beams.

[0011] In one possible design, the sling assembly includes detachable retaining rings that pass through holes in multiple support plates. One end of each retaining ring is equipped with a sling chain. The bottom end of the sling chain is fitted with a U-shaped buckle. The two eyelets of the U-shaped buckle are threaded with the same pin. A collar is fitted around the outside of the sling chain, and a hook is rotatably mounted on one side of the collar.

[0012] In one possible design, a placement hole is provided on the rear top of the support plate, and a pin is placed in the placement hole. The pin is adapted to the fixing ring and can be detached and inserted into the fixing ring.

[0013] In one possible design, two lifting lugs are symmetrically fixed to the top of each of the two supporting steel beams.

[0014] In one possible design, the two supporting steel beams and the reinforcing crossbeams are welded together to form a rectangular frame, with diagonal supports fixedly installed at the four inner corners.

[0015] In this application, when the device is first used, two supporting steel beams and two reinforcing crossbeams are welded and assembled. During the welding process, it is necessary to ensure that the welding process meets the specifications and that the connection between each component is firm and stable. After welding, a rectangular frame is formed, which will serve as the basic support structure of the entire device. To ensure the manufacturing quality of the device, after the device is assembled, it is necessary to conduct non-destructive testing on the quality of each weld. Through professional testing equipment and technology, the welds are checked for defects such as cracks and porosity. Once a problem is found, rework is carried out in time to ensure the safety and reliability of the device in subsequent use. Then, multiple support seats are evenly distributed and welded on the top of the two reinforcing crossbeams. A through hole is opened on one side of each support seat for the subsequent installation of the sling assembly. At the same time, two support plates are symmetrically welded on the front side of the support seat to enhance the stability of the support seat. Then, multiple sling assemblies are prepared and inserted into the through holes of the multiple support plates. Then, the pin is passed through the fixing ring and placed in the placement hole to complete the assembly of the entire device.

[0016] After the pile hole is inspected and accepted, a crane is used to lift the assembled device to the top of the pile opening using ropes connected to the lifting lugs. During the lifting process, it is important to ensure that the device is stable and avoid collisions and shaking. After reaching the top of the pile opening, the center of the device is aligned with the center of the pile to ensure that the device is accurately placed above the pile opening, providing a precise positioning benchmark for the subsequent connection of the rebar cage. Then, the first section of the rebar cage is lifted into the hole using a crane, with the rebar cage exposed 1-2m above the steel connection area. Then, one end of the lifting chain with U-shaped buckles and pins is manually wrapped around the rebar cage to a suitable position. The chain and buckles are then adjusted to bind the cage at that position. The hook is moved by the collar on the outside of the chain to bring it close to the U-shaped buckles and hook it onto the U-shaped buckles fixed by pins. This completes the binding of the rebar cage to a suitable position. After checking that everything is correct, the rebar cage is lowered until it is firmly placed in the pile hole. Then, the crane hook is released. At this point, the rebar cage inside the pile is temporarily fixed by the device platform to prevent it from moving during subsequent construction.

[0017] The second section of the reinforcing cage is hoisted into place. Once in position, it is vertically lowered to connect with the first section. During the connection process, small tools such as pry bars are used to ensure that the vertical reinforcing bar joints are straight, thus ensuring the overall structural stability of the reinforcing cage. After the connection is in place, temporary positioning and fixing are first done on-site using bars to prevent displacement of the reinforcing cage during subsequent welding. Then, professional welding personnel are organized to perform bar welding on the reinforcing bars in the joint area. Oxygen shielded welding is used (which has the advantages of high welding quality and fast speed), which can effectively ensure the strength and stability of the reinforcing bar joints.

[0018] After the welding of the joint between the first and second rebar cage sections is completed, relevant personnel will conduct a joint acceptance inspection. The inspection will include aspects such as welding quality and the straightness of the rebar joints, ensuring that the joints meet the design and specification requirements. After the inspection is passed, the rebar cage will be lifted as a whole using the main hoisting equipment until the lifting cable assembly is exposed at the pile opening. Then, the lifting cable assembly will be manually disassembled to prepare for the continued connection of the rebar cages. The above operation process will then be repeated, including hoisting, connecting, welding, inspection, and lifting of the rebar cages, until all rebar cages are connected to the access hole. During the repeated operation, the construction specifications and operating procedures must be strictly followed to ensure the connection quality of each rebar cage section. After all the rebar cages are lowered, the lifting cable assembly will be used again to bind and fix the rebar cages to prevent them from floating or tilting during the pile foundation tremie method grouting, thus ensuring the quality and safety of the pile foundation construction.

[0019] This utility model has the following beneficial effects:

[0020] In this invention, the anchoring components provide a stable and reliable support point for the sling assembly, ensuring that the sling assembly can securely bind the steel cage hoisted to the pile opening. This effectively prevents loosening or displacement during the binding process, while also enhancing the overall stability and load-bearing capacity of the device. This allows the device to remain stable when bearing the weight of the steel cage and external construction forces, ensuring the smooth progress of the steel cage connection construction, improving construction efficiency and quality, and reducing safety risks.

[0021] This invention utilizes a sling assembly to flexibly and securely bind the reinforcing cage. The assembly can be adjusted and reliably fixed according to different positions of the reinforcing cage. During the hoisting, docking, and fixing of the reinforcing cage, it ensures that the cage is accurately positioned, stable, and does not shake. This effectively improves the convenience and safety of construction operations and guarantees high quality and efficiency in the docking construction of large-section square pile reinforcing cages. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a fixing device for the butt joint of a large-section square pile reinforcement cage proposed in this utility model.

[0023] Figure 2 This is a schematic diagram of the overall disassembled structure of a fixing device for the butt joint of a large-section square pile reinforcement cage proposed in this utility model.

[0024] Figure 3 This is a schematic diagram of the disassembled structure of the sling assembly and support base of a fixing device for the butt joint of a large cross-section square pile reinforcement cage, as proposed in this utility model.

[0025] Figure 4 This is a schematic diagram of the sling assembly separation structure of a fixing device for the joint of a large cross-section square pile reinforcement cage.

[0026] In the diagram: 1. Supporting steel beam; 2. Reinforcing crossbeam; 3. Diagonal brace; 4. Support base; 401. Through hole; 402. Placement hole; 5. Support plate; 6. Pad; 7. Lifting chain; 8. Fixing ring; 9. Collar; 10. Lifting hook; 11. U-shaped buckle; 12. Pin; 13. Lifting lug; 14. Pin bar. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] In one embodiment

[0029] Reference Figure 1-4 A fixing device, comprising:

[0030] Two supporting steel beams 1 and two reinforcing crossbeams 2 are provided. The two supporting steel beams 1 are placed horizontally, and the two reinforcing crossbeams 2 are horizontally connected to the two ends of the two supporting steel beams 1 respectively. They are firmly connected by welding to form a rectangular frame. This rectangular frame serves as the basic support structure of the entire device, providing a stable platform for the installation of other components. It can withstand various external forces generated during the hoisting and docking of the steel cage, ensuring the stability of the overall structure of the device.

[0031] Diagonal supports 3 are fixedly installed at the four inner corners of the rectangular frame formed by welding two supporting steel beams 1 and two reinforcing crossbeams 2. One end of the diagonal support 3 is fixedly connected to the supporting steel beam 1, and the other end is fixedly connected to the reinforcing crossbeam 2, forming a stable triangular support structure. This enhances the strength and rigidity of the rectangular frame, effectively prevents the frame from deforming under stress, and further improves the load-bearing capacity of the device, enabling it to better cope with the complex mechanical environment during construction.

[0032] The rectangular frame corresponds to the pile opening; specifically, the side length of the rectangular frame is longer than the side length of the pile opening. Essentially, the rectangular frame needs to fit over the outside of the pile opening.

[0033] The anchoring assembly is installed on the reinforcing beam 2. It includes multiple support seats 4 that are fixedly set on the top of the two reinforcing beams 2 and are evenly distributed. The multiple support seats 4 are arranged at equal intervals along the length of the reinforcing beam 2 to ensure uniform force distribution. Each support seat 4 has a through hole 401 on one side for inserting a part of the sling assembly. At the same time, two triangular support plates 5 are symmetrically fixed on the front side of each support seat 4. The bottom of the support plates 5 is fixedly connected to the top of the reinforcing beam 2 to provide more stable support for the sling assembly. In addition, the same U-shaped pad 6 is fixedly set on both sides of the multiple support seats 4. The bottom of the pad 6 is located on the front side of the support seat 4 and is fixedly connected to the top of the reinforcing beam 2. The pad 6 increases the overall strength of the anchoring assembly and can better distribute the tension transmitted by the sling assembly, preventing the support seats 4 from being damaged due to excessive force.

[0034] The sling assembly is used in conjunction with the anchoring assembly to bind the reinforcing cage hoisted to the pile head. The sling assembly includes fixing rings 8 that can be detached and inserted into the through holes 401 of multiple support plates 5. The fixing rings 8 can be flexibly inserted and removed within the through holes 401, making it convenient to adjust according to the actual construction situation. One end of each fixing ring 8 is equipped with a lifting chain 7. The bottom end of the lifting chain 7 is equipped with a U-shaped buckle 11. The two eyelets of the U-shaped buckle 11 are threaded with the same pin 12. The U-shaped buckle 11 and the pin 12 form a buckle. By tightening the pin 12, the U-shaped buckle 11 can be firmly fixed to the lifting chain 7, and its position can be adjusted as needed to bind the reinforcing cage. A collar 9 is fitted on the outside of the lifting chain 7. The collar 9 can slide freely on the lifting chain 7. A hook 10 is rotatably set on one side of the collar 9. The hook 10 is used to hook the U-shaped buckle 11 to further enhance the binding firmness.

[0035] In addition, a placement hole 402 is provided on the top rear side of the support plate 5. A pin 14 is placed in the placement hole 402. The pin 14 is adapted to the fixing ring 8 and can be inserted into the fixing ring 8. When the fixing ring 8 is inserted through the through hole 401, the pin 14 is inserted into the fixing ring 8. This can prevent the fixing ring 8 from falling out of the through hole 401 during use and improve the reliability of the sling assembly.

[0036] This application can be used in the field of fixing devices for the butt joint of large-section square pile reinforcement cages, and can also be used in other fields applicable to this application.

[0037] In another embodiment

[0038] Reference Figure 1-2A fixing device for the joint of a large-section square pile reinforcement cage is disclosed. This device is applied to the technical field of fixing devices for the joint of a large-section square pile reinforcement cage. Two lifting lugs 13 are symmetrically fixed on the top of two supporting steel beams 1. The lifting lugs 13 are used to connect the crane ropes to facilitate the hoisting of the entire device to the pile opening position. The lifting lugs 13 are made of high-strength materials and are firmly welded to the supporting steel beams 1 to ensure that they can withstand the weight of the device itself and any additional external forces that may be generated during the hoisting process, thus ensuring the safe and smooth progress of the hoisting process.

[0039] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fixing device for the butt joint of a large-section square pile reinforcement cage, characterized in that, include: Supporting steel beams (1) and reinforcing crossbeams (2), each of which has two supporting steel beams (1) and two reinforcing crossbeams (2), which are welded together to form a rectangular frame corresponding to the pile opening; An anchoring assembly is provided on the reinforcing beam (2), which is used to provide a support point for the sling assembly. The anchoring assembly is also provided with a sling assembly, which is used to bind the steel cage hoisted to the pile opening.

2. The fixing device for the butt joint of a large-section square pile reinforcement cage according to claim 1, characterized in that, The anchoring assembly includes multiple support seats (4) that are fixedly installed on the top of the two reinforcing beams (2) and evenly distributed. Each of the multiple support seats (4) has a through hole (401) on one side. Each of the multiple support seats (4) has two support plates (5) that are symmetrically fixedly installed on the front side. The bottom of the support plates (5) is fixedly connected to the top of the reinforcing beams (2). The same U-shaped pad (6) is fixedly installed on both sides of the multiple support seats (4). The bottom of the pad (6) is located on the front side of the support seat (4) and is fixedly connected to the top of the reinforcing beams (2).

3. The butt joint pile mouth fixing device for large cross-section square pile reinforcement cage according to claim 2, characterized in that, The sling assembly includes detachable fixing rings (8) that pass through holes (401) in multiple support plates (5). One end of each fixing ring (8) is equipped with a sling chain (7). The bottom end of the sling chain (7) is provided with a U-shaped buckle (11). The two eyelets of the U-shaped buckle (11) are threaded with the same pin (12). The outside of the sling chain (7) is fitted with a collar (9). A hook (10) is rotatably provided on one side of the collar (9).

4. The butt joint pile mouth fixing device of large cross-section square pile reinforcement cage according to claim 2, characterized in that, The support plate (5) has a placement hole (402) on its rear top side. A pin (14) is placed in the placement hole (402). The pin (14) is adapted to the fixing ring (8) and can be detached and inserted into the fixing ring (8).

5. The butt joint pile mouth fixing device of large cross-section square pile reinforcement cage according to claim 1, characterized in that, The tops of the two supporting steel beams (1) are symmetrically fixed with two lifting lugs (13).

6. The butt joint pile mouth fixing device of large cross-section square pile reinforcement cage according to claim 1, characterized in that, The two supporting steel beams (1) and the reinforcing crossbeam (2) are welded together to form a rectangular frame, and diagonal supports (3) are fixedly installed at the four inner corners.

7. The fixing device for the butt joint of a large-section square pile reinforcement cage according to claim 1, characterized in that, The rectangular frame corresponding to the pile opening is specifically defined as having a side length greater than the side length of the pile opening.

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