A reinforcing cage for concrete forming

Abstract

The application discloses a reinforcing cage for concrete forming and belongs to the technical field of concrete, which comprises an inner ring composed of a plurality of inner supporting rods and an outer ring composed of a plurality of outer supporting rods, a plurality of inner rings are arranged on the outer part of the inner supporting rods along the length direction of the inner ring, the inner rings are fixedly connected with the inner supporting rods, a plurality of outer rings with changeable diameters are sleeved on the outer part of the outer supporting rods along the length direction of the outer ring, and the plurality of outer supporting rods can move outward in the direction away from the center axis of the outer ring; a circular channel is arranged in the middle of the inner ring, an inner cylinder capable of sliding in the circular channel is arranged in the channel, and the inner cylinder can convey the concrete raw materials from the tail part to the end part of the reinforcing cage. The application designs a reinforcing cage structure, which comprises an outer ring and an inner ring, and the design has advantages in the transportation and installation process. In the transportation process, the reinforcing cage is small in diameter, is easy to move and carry, and the difficulty and cost of transportation are reduced.

Description

Technical Field

[0001] This invention relates to a reinforcing cage for concrete molding, belonging to the field of reinforcing cage technology. Background Technology

[0002] In pile foundation construction, the structural design and installation process of the reinforcing cage are crucial, directly affecting the quality and efficiency of the project. However, traditional reinforcing cage designs have some significant problems. The typically large diameter of the reinforcing cage increases the difficulty of transportation and installation. Furthermore, traditional concrete pouring methods often result in uneven concrete distribution or concrete impacting the borehole wall during pouring, increasing the risk of spalling. More importantly, traditional reinforcing cages usually only have one ring of reinforcing bars (i.e., struts), a design that is not ideal for supporting the internal concrete structure. To address these problems, this invention proposes a reinforcing cage designed to solve these issues. Summary of the Invention

[0003] To address the problems existing in the prior art, the present invention provides a reinforcing cage for concrete molding, which can solve the problems of difficult transportation and installation of reinforcing cages and difficult material injection.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a steel cage for concrete forming, comprising an inner ring composed of multiple inner support rods and an outer ring composed of multiple outer support rods. Multiple inner rings are arranged outside the inner support rods along the length direction of the inner ring, and the inner rings are fixedly connected to the inner support rods. Multiple outer rings with adjustable diameters are fitted outside the outer support rods along the length direction of the outer ring, and all of the multiple outer support rods can move outward in a direction away from the central axis of the outer ring.

[0005] The inner ring has a circular channel in the middle, and an inner cylinder that can slide in the circular channel is installed in the channel. The inner cylinder can transport concrete raw materials from the tail end to the end of the steel cage.

[0006] Preferably, the inner ring has multiple sets of sliding sleeves and fixed sleeves in the middle, and the distance between the sliding sleeves and fixed sleeves in the same set can be changed. Multiple elastic bodies are connected between the sliding sleeves and fixed sleeves. The elastic bodies are bent and their two ends are respectively connected to the sliding sleeves and fixed sleeves. The middle part of the elastic body is fixed to the outer support rod.

[0007] Preferably, the elastic body includes two connecting rods distributed at an included angle, one end of the two connecting rods is hinged to each other, the hinge position of the two connecting rods is fixed to the outer support rod, and the ends of the two connecting rods away from the outer support rod are respectively hinged to the sliding sleeve and the fixed sleeve.

[0008] Preferably, both the sliding sleeve and the fixed sleeve have an inner hole inside, and the diameter of the inner hole is adapted to the outer diameter of the inner cylinder.

[0009] Preferably, a rotatable preload rod is connected between multiple fixed sleeves. The preload rod passes through the sliding sleeve, and the portion of the preload rod located on the sliding sleeve is provided with a thread. The interior of the sliding sleeve is provided with a threaded hole adapted to the thread.

[0010] Preferably, the outer ring is bolt-shaped with more than 1 turn, and each of the outer support rods has a groove on its outer surface, which is adapted to the outer ring.

[0011] Preferably, the end of the outer support rod is provided with an inwardly curved hook.

[0012] Preferably, the elastomer is bent, and the degree of bending of the elastomer increases when the distance between the sliding sleeve and the fixed sleeve in the same group decreases.

[0013] Preferably, the sliding sleeve is provided with multiple mounting grooves, and a support shaft is installed inside the mounting groove, with the end of the connecting rod rotatably mounted on the corresponding support shaft.

[0014] Beneficial effects: This invention designs a reinforcing cage structure, including multiple sets of outer and inner struts. These struts combine to form an outer ring and an inner ring, where the diameter of the inner ring is fixed, while the diameter of the outer ring can be adjusted as needed. When the diameter of the outer ring is adjusted to a smaller value, the outer ring fits tightly against the inner ring, thus reducing the overall outer diameter of the reinforcing cage. This design offers advantages during transportation and installation.

[0015] During transportation, the smaller diameter of the reinforcing cage makes it easier to move and handle, reducing transportation difficulty and costs. During installation, the smaller diameter also facilitates its placement into the pile foundation hole. Once the cage is in the appropriate position, its diameter can be increased and adjusted inside the pile foundation hole. This adjustment effectively prevents the reinforcing cage from colliding with the hole wall, thus reducing the risk of debris falling from the hole wall due to collision and ensuring construction quality and safety.

[0016] The reinforcing cage of this invention features an inner cylinder specifically designed for conveying concrete materials. During pouring, the inner cylinder allows concrete to be injected from the bottom of the pile hole, and as the inner cylinder slowly rises, the concrete material is stably introduced into the interior of the pile hole. This design not only enhances the stability of material conveying but also avoids the problems associated with injecting concrete directly into the borehole using traditional methods. Traditional injection methods often result in concrete impacting the sidewalls of the pile hole, increasing the risk of spalling. This invention, through its inner cylinder design, significantly reduces this risk, thereby improving construction quality and safety. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a cross-sectional view of the connection between the sliding sleeve, the fixed sleeve, and the outer support rod of the present invention.

[0019] Figure 3 This is a partial view of the steel reinforcement cage.

[0020] Figure 4 This is a cross-sectional view of the reinforcing cage.

[0021] Figure 5 This is a connection diagram of the sliding sleeve, fixing sleeve, and preload rod of the present invention.

[0022] Figure 6 This is a partial connection diagram of the outer support rod and outer ring of the present invention.

[0023] In the diagram: 1. Inner cylinder, 2. Inner support rod, 3. Outer support rod, 4. Outer ring, 5. Inner ring, 6. Connecting rod, 7. Sliding sleeve, 8. Fixed sleeve, 9. Connecting piece, 10. Preload rod. Detailed Implementation

[0024] The present invention is illustrated below with specific embodiments, but these are not intended to limit the invention.

[0025] Example 1 like Figures 1-6As shown in this embodiment, a reinforcing cage for concrete molding is provided, comprising an inner ring composed of multiple inner struts 2 and an outer ring composed of multiple outer struts 3. The number of inner struts 2 and outer struts 3 is at least three; in this embodiment, the number is ten. Furthermore, the inner struts 2 and outer struts 3 are evenly distributed, forming a circle. The line connecting two adjacent outer struts 3 to the center of the circle forms an angle. The inner struts 2 located inside the angle are arranged on the bisector of this angle, making the inner struts 2 and outer struts 3 more uniform. This installation method allows the inner struts 2 and outer struts 3 to interact, improving the tensile strength, compressive strength, and seismic strength of the molded concrete, thus enhancing the overall performance of the concrete structure. Multiple inner rings 5 ​​are arranged along the length of the inner ring outside the inner struts 2. The inner rings 5 ​​are fixedly connected to the inner struts 2. The struts 2 are fixed together, and the fixing method can be welding or other fixing methods. The diameter of the inner ring cannot be changed. Welding multiple inner rings 5 ​​to the outside of the inner struts 2 improves the support effect of the inner ring. Multiple outer rings 4 with adjustable diameters are fitted around the outside of the outer struts 3 along the length of the outer ring. All the outer struts 3 can move outwards away from the central axis of the outer rings 4. When the outer struts 3 move outwards uniformly, the diameter of the outer ring increases, and the diameter of the outer rings 4 on the outer ring also increases accordingly. Therefore, the diameter of the entire reinforcing cage increases. Under normal conditions, the diameter difference between the outer and inner rings is small. During installation, the installation diameter of the reinforcing cage can be changed as needed. The outer rings 4 are bolt-shaped with more than one ring. Each outer strut 3 has a groove on its outer surface that fits the outer ring 4. Figure 6 The contact area between the outer ring 4 and the outer support rod 3 will be embedded in the groove. When the outer ring increases, the outer ring 4 will also increase. During the increase, the outer ring 4 will always be stuck in the groove, so that the outer ring 4 will not slide on the outer support rod 3.

[0026] Combination Figure 2 The inner ring has multiple sets of sliding sleeves 7 and fixed sleeves 8 in the middle. The distance between each set of sliding sleeves 7 and fixed sleeves 8 can be changed. Multiple elastic bodies are connected between the sliding sleeves 7 and fixed sleeves 8. The elastic bodies are bent. The two ends of the elastic bodies are connected to the sliding sleeves 7 and fixed sleeves 8 respectively. The middle part of the elastic body is fixed to the outer support rod 3. The elastic body is bent as a whole. The elastic body can not only serve as a connecting medium between the inner ring and the outer ring, but also as a driving device for expanding the diameter of the outer ring. That is, when the distance between the sliding sleeves 7 and fixed sleeves 8 in the same group decreases, the bending degree of the elastic body increases, that is, the distance between the end and the outer support rod 3 increases, the outer support rod 3 moves outward, and the diameter of the outer ring increases.

[0027] Combination Figure 4Both the sliding sleeve 7 and the fixed sleeve 8 have internal holes with diameters matching the outer diameter of the inner cylinder 1. The inner cylinder 1 can slide within these holes and also supports multiple sliding sleeves 7. The sliding sleeves 7 and fixed sleeve 8, supported by the inner cylinder 1, enhance the support for the inner support rod 2 and outer support rod 3, strengthening the overall reinforcement cage before material injection and preventing deformation due to external forces. A circular channel is located in the middle of the sliding sleeves 7 and fixed sleeve 8, through which the inner cylinder 1, capable of sliding, is installed. The inner cylinder 1 transports concrete material from the tail to the end of the reinforcement cage. This design allows it to move freely within the circular channel. The tail of the inner cylinder 1 is connected to the concrete material supply device, and the end of the inner cylinder 1 is inserted into and extends from the tail of the circular channel to its end. During material injection, the concrete material is first injected into the end of the reinforcement cage. As the injection process progresses, the end of the inner cylinder gradually slides towards the tail within the circular channel. This sliding motion ensures that the concrete sequentially fills the space inside the reinforcing cage, achieving uniform and efficient grouting. The entire process ensures both uniform grouting and significantly improves construction efficiency.

[0028] Combination Figure 5 A rotatable preload rod 10 is connected between multiple fixed sleeves 8. The preload rod 10 passes through the sliding sleeve 7. The part of the preload rod 10 located on the sliding sleeve 7 is provided with a thread. The interior of the sliding sleeve 7 is provided with a threaded hole that matches the thread. Rotating the preload rod 10 can drive the sliding sleeve 7 to slide. During the sliding process, the sliding sleeve 7 can slide in the direction of the fixed sleeves 8 in the same group. At the same time, the threaded connection between the sliding sleeve 7 and the preload rod 10 can ensure that the sliding sleeve 7 is supported.

[0029] Combination Figure 1 The ends of the outer struts 3 are provided with inwardly bent hooks, which can increase the stability, connectivity and corrosion resistance of the steel cage, and ensure that it can maintain its integrity during transportation, hoisting and construction, thereby extending its service life and improving safety.

[0030] Example 2 like Figures 1-3As shown, based on Embodiment 1, this embodiment provides a solution to the problem of supporting the elastic body. Specific details are as follows: The elastic body includes two connecting rods 6 arranged at an included angle. One end of the two connecting rods 6 is hinged to each other, and the hinged position of the two connecting rods 6 is fixed to the outer support rod 3. The ends of the two connecting rods 6 away from the outer support rod 3 are respectively hinged to a sliding sleeve 7 and a fixed sleeve 8. A connecting piece 9 is installed at the hinged part of the two connecting rods 6, and the connecting piece 9 is fixed to the outer support rod 3. The fixing method can be welding. The sliding sleeve 7 is provided with multiple mounting grooves. The groove is equipped with a support shaft. The end of the connecting rod 6 is rotatably mounted on the corresponding support shaft. When the sliding sleeve 7 slides toward the fixed sleeve 8 of the same group, the included angle between the two connecting rods 6 becomes smaller, that is, the outer support ring will slide outward and the diameter of the outer ring will increase. When the diameter of the outer ring increases, the overall diameter of the reinforcing cage will also increase. After the outer ring expands, the connecting rod 6 is the connecting rod 6 between the outer ring and the inner ring. After the concrete is injected, the connecting rod 6 can also serve as a support device inside the concrete, thereby ensuring that the formed concrete is more solid.

[0031] In its initial state, the outer ring 4 formed by the outer struts 3 and the inner ring 5 formed by the inner struts 2 have small diameter differences. This initial state allows the steel cage to be used for transporting and lowering into the pile hole. During installation, the outer diameter of the steel cage is in a contracting state. The steel cage is lifted by mechanical components and inserted into the pile hole. The pre-tensioning rod 10 inside the steel cage is rotated. Rotation of the pre-tensioning rod 10 adjusts the distance between the sliding sleeve 7 and the fixed sleeve 8. When the distance between the sliding sleeve 7 and the fixed sleeve 8 decreases, the bending degree of the elastic body connecting the sliding sleeve 7 and the fixed sleeve 8 increases. The elastic body pushes the outer struts 3, causing them to expand outwards. As multiple outer struts 3 expand, the outer ring formed by them increases, leading to an increase in the diameter of the outer ring 4. The outer diameter of the steel cage also increases accordingly, and concrete is injected into the bottom of the pile hole through the inner cylinder 1.

[0032] During the process of injecting concrete into the pile foundation hole, the inner cylinder 1 slides upward under the action of mechanical components. As it slides upward, concrete continues to be injected into the end of the inner cylinder 1, and the concrete material is slowly injected into the interior from the bottom of the pile foundation hole. This injection method can sequentially fill the space inside the reinforcing cage, thereby achieving uniform and efficient injection. The entire process not only ensures the uniformity of injection but also greatly improves construction efficiency.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate and not limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention without departing from the spirit and scope of the present invention. Any modifications or partial substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A reinforcing cage for concrete molding, characterized in that, It includes an inner ring composed of multiple inner support rods (2) and an outer ring composed of multiple outer support rods (3). Multiple inner rings (5) are arranged on the outside of the inner support rods (2) along the length direction of the inner ring. The inner rings (5) are fixedly connected to the inner support rods (2). Multiple outer rings (4) with adjustable diameters are sleeved on the outside of the outer support rods (3) along the length direction of the outer ring. All of the multiple outer support rods (3) can move outward in a direction away from the central axis of the outer rings (4). The number of inner struts (2) and outer struts (3) is at least three, and the inner struts (2) and outer struts (3) are evenly distributed at intervals. Multiple outer struts (3) form a circle, and the line connecting two adjacent outer struts (3) and the center of the circle forms an angle. The inner struts (2) located inside the angle are arranged on the bisector of this angle. The inner ring has a circular channel in the middle, and an inner cylinder (1) that can slide in the circular channel is installed in the channel. The inner cylinder (1) can transport concrete raw materials from the tail of the steel cage to the end. The end of the inner cylinder (1) is inserted from the tail of the circular channel and extends to the end of the circular channel. When the material is fed, the concrete raw materials are first injected into the end of the steel cage. As the injection process proceeds, the end of the inner cylinder (1) gradually slides towards the tail inside the circular channel. The inner ring is provided with multiple sets of sliding sleeves (7) and fixed sleeves (8) in the middle. The distance between the sliding sleeves (7) and fixed sleeves (8) in the same set can be changed. Multiple elastic bodies are connected between the sliding sleeves (7) and fixed sleeves (8). The elastic bodies are bent. The two ends of the elastic bodies are respectively connected to the sliding sleeves (7) and fixed sleeves (8). The middle part of the elastic body is fixed to the outer support rod (3). A rotatable preload rod (10) is connected between multiple fixed sleeves (8). The preload rod (10) passes through the sliding sleeve (7). The preload rod (10) is threaded at the part of the sliding sleeve (7). The sliding sleeve (7) is provided with a screw hole that matches the thread. Each of the outer struts (3) has a groove on its outer surface, which is adapted to the outer ring (4); The elastic body includes two connecting rods (6) distributed at an angle, one end of the two connecting rods (6) is hinged to each other, the hinge position of the two connecting rods (6) is fixed to the outer support rod (3), and the ends of the two connecting rods (6) away from the outer support rod (3) are respectively hinged to the sliding sleeve (7) and the fixed sleeve (8). Both the sliding sleeve (7) and the fixed sleeve (8) have an inner hole inside, and the diameter of the inner hole is adapted to the outer diameter of the inner cylinder (1).

2. A reinforcing cage for concrete forming according to claim 1, characterized in that, The end of the outer support rod (3) is provided with a hook that bends inward.

3. A reinforcing cage for concrete forming according to claim 1, characterized in that, When the distance between the sliding sleeve (7) and the fixed sleeve (8) in the same group decreases, the degree of bending of the elastomer increases.

4. A reinforcing cage for concrete forming according to claim 1, characterized in that, The sliding sleeve (7) is provided with multiple mounting slots, and a support shaft is installed inside the mounting slot. The end of the connecting rod (6) is rotatably mounted on the corresponding support shaft.

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