A reinforcing cage and hoisting device for a reservoir riverbed reinforced concrete cast-in-place pile

Abstract

A reservoir riverbed reinforced concrete cast-in-place pile is used steel reinforcement cage and hoisting device, including steel reinforcement framework, steel reinforcement framework bottom is fixedly connected with the tray through multiple extension bars, and the tray is formed with the concrete receiving area between the steel reinforcement framework bottom, a plurality of internal thread sleeves are fixedly connected on the steel reinforcement framework top, and the internal thread sleeves can be connected with the hoisting device through the lead screw. The utility model discloses avoid in the concrete pouring process, the steel reinforcement cage floats up, improves the construction efficiency, and reduces the construction cost.

Description

Technical Field

[0001] This utility model relates to the technical field of steel cages for underwater cast-in-place piles, specifically a steel cage and hoisting device for reinforced concrete cast-in-place piles in reservoir riverbeds. Background Technology

[0002] When constructing reinforced concrete piles on a reservoir riverbed, drilling is typically performed first using an impact drilling rig. Then, a crane and wire ropes are used to precisely lift the reinforcing cage into the borehole, ensuring accurate placement. Next, concrete is poured underwater through a tremie pipe. However, during concrete pouring, the reinforcing cage is prone to getting caught on the tremie pipe, causing it to float upwards.

[0003] Currently, the common solution to prevent the rebar cage from floating is to send divers underwater to remove the wire hooks used to hoist the cage and weld it to the inner wall of the top of the cast-in-place pile's steel casing. This prevents the cage from floating during concrete pouring. However, this method of using divers for underwater welding has many drawbacks: firstly, diving operations are costly and require huge investments; secondly, the underwater construction environment is harsh, with unforeseen dangers such as currents and debris entanglement, which not only significantly reduces construction efficiency but also substantially increases construction costs. Utility Model Content

[0004] To address the difficulty in preventing the rebar cage from floating in existing technologies, this utility model provides a rebar cage and hoisting device for reinforced concrete cast-in-place piles in reservoir riverbeds. This prevents the rebar cage from floating during concrete pouring, thereby improving construction efficiency and reducing construction costs.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a steel cage for reinforced concrete cast-in-place piles in reservoir riverbeds, including a steel cage, the bottom of the steel cage is fixedly connected to the tray through multiple extension bars, a concrete bearing area is formed between the tray and the bottom of the steel cage, and several internal threaded sleeves are fixedly connected to the top of the steel cage, the internal threaded sleeves can be connected to the hoisting device through screw rods.

[0006] As a further optimization of the steel cage for reinforced concrete cast-in-place piles in reservoir riverbeds, the diameter of the tray is the same as the inner diameter of the steel cage.

[0007] As a further optimization of the steel cage for reinforced concrete cast-in-place piles in reservoir riverbeds, the steel cage includes multiple main bars, multiple secondary bars, and multiple annular stirrups. The main bars and secondary bars are parallel to each other and distributed in annular shape. The annular stirrups are located outside the main bars and secondary bars and are fixedly connected to the main bars and secondary bars. The main bars are correspondingly connected to the extension bars. The internal threaded sleeve is fixedly installed on the top of some of the main bars.

[0008] As a further optimization of the steel cage for reinforced concrete cast-in-place piles in reservoir riverbeds, the tray includes a wire mesh with two vertically intersecting reinforcing bars fixedly connected to it. Four extension bars are provided, and the extension bars are fixedly connected to the ends of the reinforcing bars.

[0009] As a further optimization of the steel cage for reinforced concrete cast-in-place piles in reservoir riverbeds, the steel wire mesh is connected to the reinforcing bars by tie wire.

[0010] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a hoisting device for hoisting the above-mentioned steel cage. The hoisting device includes an installation rod, several slings and several lifting bars. One end of the sling is connected to the hook of the crane, and the other end of the sling is connected to the installation rod. The installation rod is connected to the steel cage through the lifting bars.

[0011] As a further optimization of the utility model hoisting device: two lifting rods are provided, one end of the lifting rod is fixedly connected to the screw rod, and the other end of the lifting rod is fixedly connected to the lifting lug. The installation rod passes through the lifting lug and the connecting ring on the steel casing.

[0012] As a further optimization of the utility model hoisting device: the end of the hoisting rod is bent to form the hoisting lug.

[0013] As a further optimization of the utility model lifting device: the lifting device includes a shackle that cooperates with the hook, and the sling is fixedly connected to the shackle.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1) This utility model has a tray for receiving concrete fixedly connected to the bottom of the steel reinforcement cage. During the concrete pouring process, the tray at the bottom of the steel reinforcement cage can effectively receive the falling concrete. As the amount of concrete poured increases, the weight of the concrete on the tray also gradually increases. This increase in weight significantly hinders the upward movement of the steel reinforcement cage, making the overall weight of the steel reinforcement cage much greater than the buoyancy, thereby effectively preventing the steel reinforcement cage from floating.

[0016] 2) This utility model fixes several internal threaded sleeves to the top of the steel reinforcement cage. The internal threaded sleeves can be connected to the hoisting device through the screw rod. By loosening the screw rod in the reverse direction, the internal threaded sleeves can be separated from the steel reinforcement cage. In this way, divers are not required to go underwater to cut the hoisting bars, which not only improves construction efficiency but also reduces construction costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a magnified view of a portion of point A;

[0019] Figure 3 This is a magnified view of part B.

[0020] The markings in the diagram are: 1. Reinforcing steel cage, 2. Main reinforcement, 3. Extension reinforcement, 4. Tray, 5. Reinforcing reinforcement, 6. Internal threaded sleeve, 7. Lifting rod, 8. Threaded rod, 9. Lifting lug, 10. Installation rod, 11. Steel casing, 12. Connecting ring, 13. Concrete bearing area, 14. Shackle, 15. Lifting hook, 16. Lifting sling, 17. Circular stirrup, 18. Secondary reinforcement. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts not described or disclosed in detail in the following embodiments of this utility model should be understood as prior art known or should be known by those skilled in the art, such as the structure of the steel casing 11, the structure of the crane, how the sling 16 is connected to the crane hook 15, the model of the shackle 14, etc.

[0022] This utility model first provides a steel cage for reinforced concrete cast-in-place piles in reservoir riverbeds. The following are embodiments of this steel cage:

[0023] Example 1

[0024] A type of reinforcing cage for reinforced concrete cast-in-place piles in reservoir riverbeds, such as Figures 1 to 3 As shown, it includes a steel reinforcement cage 1. The bottom of the steel reinforcement cage 1 is fixedly connected to the tray 4 through multiple extension bars 3. A concrete bearing area 13 is formed between the tray 4 and the bottom of the steel reinforcement cage 1. Several internal threaded sleeves 6 are fixedly connected to the top of the steel reinforcement cage 1. The internal threaded sleeves 6 can be connected to the hoisting device through the screw rod 8.

[0025] During the pouring of reinforced concrete piles in the reservoir riverbed, the tray 4 at the bottom of the reinforcing steel frame 1 can effectively catch the falling concrete. In order to facilitate the fixing of the tray 4, the extension bar 3 fixedly connected to the bottom of the reinforcing steel frame 1 will extend a part from the reinforcing steel frame 1, and the end of the extended part will be fixed to the tray 4.

[0026] As the amount of concrete injected increases, the weight of the concrete supported on tray 4 also gradually increases. This increase in weight significantly hinders the upward movement of the reinforcing cage 1, making the overall weight of the reinforcing cage 1 much greater than the buoyancy, thus effectively preventing the reinforcing cage from floating. Furthermore, by loosening the threaded rod 8 in the reverse direction, it is separated from the internal threaded sleeve 6. This avoids the need for divers to go underwater to cut the lifting bars 7, improving construction efficiency and reducing construction costs.

[0027] In this embodiment, two internal threaded sleeves 6 are provided. The internal threaded sleeves 6 are set on the periphery of the steel reinforcement skeleton 1 and the two internal threaded sleeves 6 are symmetrically distributed.

[0028] In this embodiment, the depth of the cast-in-place pile is 15m, the diameter of the cast-in-place pile is 80cm, the length of the steel reinforcement cage 1 is 10m, the internal threaded sleeve 6 is set as a 5cm long M10 sleeve nut, the inner diameter of the internal threaded sleeve 6 is 8mm, and the length of the threaded rod 8 is 10cm.

[0029] The above are the basic embodiments of this utility model. Further improvements, optimizations, and limitations can be made based on the above to obtain the following embodiments:

[0030] Example 2

[0031] This embodiment is an improvement on embodiment 1. Its main structure is the same as that of embodiment 1. The improvement is that, in order to ensure the bearing effect of the tray 4 on the concrete and that the size of the tray 4 will not interfere with the entry of the steel reinforcement cage 1 into the hole, the diameter of the tray 4 is the same as the inner diameter of the steel reinforcement cage 1.

[0032] Example 3

[0033] This embodiment is an improvement on embodiment 2. Its main structure is the same as that of embodiment 2. The improvement is that the steel reinforcement cage 1 includes multiple main bars 2, multiple secondary bars 18 and multiple annular stirrups 17. The multiple main bars 2 and multiple secondary bars 18 are parallel to each other and distributed in an annular pattern. The annular stirrups 17 are located outside the main bars 2 and secondary bars 18 and are fixedly connected to the main bars 2 and secondary bars 18. The main bars 2 are correspondingly connected to the extension bars 3. The internal threaded sleeve 6 is fixedly installed on the top of some of the main bars 2.

[0034] The main reinforcement 2 and the extension reinforcement 3 can be integrally formed. In this case, the overall length of the main reinforcement 2 and the extension reinforcement 3 is greater than the length of the secondary reinforcement 18. There are four main reinforcements 2, and the number of secondary reinforcements 18 is greater than the number of main reinforcements 2. The installation position of the internal threaded sleeve 6 is flexible. In addition to being placed on top of some of the main reinforcements 2, it can also be placed on the uppermost annular stirrup 17, depending on the actual situation. In this embodiment, the length of the main reinforcement 2 is 10m, the diameter of the main reinforcement 2 is 18mm, and the length of the extension reinforcement 3 is 4.95m.

[0035] Example 4

[0036] This embodiment is an improvement on embodiment 2. Its main structure is the same as that of embodiment 2. The improvement is that the tray 4 includes a wire mesh, and two vertically intersecting reinforcing ribs 5 are fixedly connected to the wire mesh. The extension ribs 3 are set to four, and the extension ribs 3 are fixedly connected to the ends of the reinforcing ribs 5.

[0037] In this embodiment, the diameter of the reinforcing rib 5 is 18mm, and the length of the reinforcing rib 5 is 75cm. The wire mesh is set as a close-mesh mesh with a diameter of 73cm and a mesh size of 4.5mm × 4.5mm. The two reinforcing ribs 5 are perpendicular to each other and intersect. The intersecting parts are fixedly connected by conventional connection methods, such as welding. The connection method can be common methods such as welding. After welding, the two reinforcing ribs 5 are fixed to the wire mesh, which strengthens the load-bearing capacity of the wire mesh. At the same time, the setting of the reinforcing ribs 5 means that when the wire mesh is connected to the extension rib 3, only a fixed connection is required, that is, the extension rib 3 is fixedly connected to one end of the reinforcing rib 5.

[0038] To facilitate the connection between the wire mesh and the reinforcing rib 5, the wire mesh is connected to the reinforcing rib 5 by binding wire.

[0039] This utility model also provides a hoisting device, and the following are embodiments of the hoisting device:

[0040] A hoisting device is used to hoist the aforementioned steel reinforcement cage. The hoisting device includes an installation rod 10, several slings 16, and several lifting bars 7. One end of the sling 16 is connected to the hook 15 of the crane, and the other end of the sling 16 is connected to the installation rod 10. The installation rod 10 is connected to the steel reinforcement cage 1 through the lifting bars 7.

[0041] Two lifting rods 7 are provided, each 19m long and 8mm in diameter. One end of the lifting rod 7 is fixedly connected to the threaded rod 8, and the other end is fixedly connected to a lifting lug 9. The mounting rod 10 passes through the lifting lug 9 and the connecting ring 12 on the steel casing 11. By loosening the threaded rod 8 in the reverse direction, the threaded rod 8 and the lifting rod 7 connected to it are separated from the internal threaded sleeve 6. In this way, the lifting rod 7, which is fixedly connected to the threaded rod 8, can be reused when pouring the next cast-in-place pile, reducing construction costs.

[0042] The end of the lifting rod 7 is bent to form the lifting lug 9. In this embodiment, the inner diameter of the lifting lug 9 is 8cm. Two connecting rings 12 with an inner diameter of 8cm are welded to the top of the steel casing 11 to cooperate with the lifting lug 9. The mounting rod 10 passes through the connecting rings 12 and the lifting lug 9 to further fix the steel cage and prevent it from floating. The lifting device includes a shackle 14 that cooperates with the hook 15, and the sling 16 is fixedly connected to the shackle 14.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the present 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 present invention. Therefore, the present 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 reinforcing cage for reinforced concrete cast-in-place piles in a reservoir riverbed, characterized in that: It includes a steel reinforcement cage (1), the bottom of the steel reinforcement cage (1) is fixedly connected to the tray (4) by multiple extension bars (3), a concrete bearing area (13) is formed between the tray (4) and the bottom of the steel reinforcement cage (1), and several internal threaded sleeves (6) are fixedly connected to the top of the steel reinforcement cage (1), and the internal threaded sleeves (6) can be connected to the hoisting device through the screw rod (8).

2. The steel cage for reinforced concrete cast-in-place piles in reservoir riverbeds as described in claim 1, characterized in that: The diameter of the tray (4) is the same as the inner diameter of the steel reinforcement frame (1).

3. The steel cage for reinforced concrete cast-in-place piles in reservoir riverbeds as described in claim 1, characterized in that: The steel reinforcement cage (1) includes multiple main bars (2), multiple secondary bars (18) and multiple annular stirrups (17). The multiple main bars (2) and multiple secondary bars (18) are parallel to each other and distributed in annular shape. The annular stirrups (17) are located outside the main bars (2) and secondary bars (18) and are fixedly connected to the main bars (2) and secondary bars (18). The main bars (2) are correspondingly connected to the extension bars (3). The internal threaded sleeve (6) is fixedly installed on the top of some of the main bars (2).

4. The reinforcing cage for reinforced concrete cast-in-place piles in reservoir riverbeds as described in claim 1, characterized in that: The tray (4) includes a wire mesh with two vertically intersecting reinforcing ribs (5) fixedly connected to it. The extension ribs (3) are set to four, and the extension ribs (3) are fixedly connected to the ends of the reinforcing ribs (5).

5. The reinforcing cage for reinforced concrete cast-in-place piles in reservoir riverbeds as described in claim 4, characterized in that: The wire mesh is connected to the reinforcing bar (5) by tie wire.

6. A hoisting device, characterized in that: For hoisting the steel cage as described in any one of claims 1-5, the hoisting device includes an installation rod (10), a plurality of slings (16) and a plurality of lifting bars (7), one end of the slings (16) is connected to the hook (15) of the crane, and the other end of the slings (16) is connected to the installation rod (10), and the installation rod (10) is connected to the steel cage (1) through the lifting bars (7).

7. The hoisting device as described in claim 6, characterized in that: Two lifting rods (7) are provided. One end of the lifting rod (7) is fixedly connected to the screw rod (8), and the other end of the lifting rod (7) is fixedly connected to the lifting lug (9). The mounting rod (10) passes through the lifting lug (9) and the connecting ring (12) on the steel casing (11).

8. The hoisting device as described in claim 7, characterized in that: The end of the lifting rod (7) is bent to form the lifting lug (9).

9. The hoisting device as described in claim 6, characterized in that: The hoisting device includes a shackle (14) that cooperates with the hook (15), and the sling (16) is fixedly connected to the shackle (14).

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