Auxiliary tool for precast pipe pile construction
By designing auxiliary tools such as hoppers and rebar cage positioning hoops, the problems of concrete waste and rebar cage misalignment in the construction of precast pipe piles were solved, achieving a more stable and efficient construction effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA METALLURGICAL CONSTR ENG GRP
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-21
AI Technical Summary
Concrete pouring during precast pipe pile construction is prone to waste and the main reinforcement bars of the steel cage pile are misaligned, leading to construction instability.
An auxiliary tool including a hopper and a rebar cage positioning hoop is designed. The hopper has a slope towards the discharge port, and the rebar cage positioning hoop, including U-bolts and U-pins, is set on the bottom support to fix the main reinforcement of the rebar cage and ensure that it is in a stable position.
It reduces waste during concrete pouring, lowers the deviation of the main reinforcement bars in the steel cage pile, and improves the stability and efficiency of construction.
Smart Images

Figure CN224531679U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of precast pipe pile construction, specifically to an auxiliary tool for precast pipe pile construction. Background Technology
[0002] Precast pipe piles are inconvenient to pour due to their small internal diameter. During construction, concrete overflow often occurs due to large material output from the equipment or poor alignment of the discharge port, resulting in concrete waste. Furthermore, during concrete pouring, the compression of the concrete can cause the main reinforcement bars of the pile cage to become misaligned.
[0003] Therefore, to solve the above problems, an auxiliary tool is needed for the construction of precast pipe piles that can reduce waste during concrete pouring and reduce the misalignment of the main reinforcement bars in the steel cage piles. Utility Model Content
[0004] In view of this, the purpose of this utility model is to overcome the defects in the prior art and provide an auxiliary tool for the construction of precast pipe piles, which can reduce waste during concrete pouring and reduce the deviation of the main reinforcement of the steel cage pile.
[0005] The present invention relates to an auxiliary tool for the construction of precast pipe piles, comprising a hopper; the hopper comprises a bottom support with a material discharge port and a hopper body connected to the bottom support, the hopper body having a slope toward the material discharge port; and a steel cage positioning hoop is provided on the bottom support for fixing each main reinforcement bar of the steel cage in a corresponding preset position.
[0006] In use, the bottom support of the hopper is set on the top surface of the precast pipe pile, and the discharge port of the hopper is connected to the cavity of the precast pipe pile.
[0007] Furthermore, the rebar cage positioning hoop includes a U-bolt, a nut adapted to the U-bolt, and a limiting part for installing the U-bolt. The limiting part is provided on the bottom support of the hopper. In use, the U-bolt places the main reinforcement bars of the rebar cage in the groove of the U-bolt, and the U-bolt is assembled to the limiting part by the nut.
[0008] The rebar cage positioning hoops consist of several of the same number as the main reinforcing bars in the rebar cage; so that when in use, the rebar cage positioning hoops correspond one-to-one with the main reinforcing bars of the pile to limit their position, and each main reinforcing bar of the pile is limited to the groove of the corresponding U-bolt and connected to the bottom support.
[0009] Furthermore, the limiting part is L-shaped, with the horizontal side of the L-shape fixed on the base, and a through hole I for the U-bolt to pass through on the vertical side of the L-shape, so that when in use, the U-bolt passes through the vertical side of the L-shape and is locked by the corresponding nut.
[0010] Furthermore, the rebar cage positioning hoop includes a U-shaped pin and a block for installing the U-shaped pin; the top of the U-shaped pin has an upwardly bent limiting hook, and the block is disposed on the bottom support of the hopper;
[0011] When in use, the U-shaped pin places the main reinforcement bars of the steel cage in the groove of the U-shaped pin, and the U-shaped pin extends into the insertion block through the limiting hook and is correspondingly limited.
[0012] The rebar cage positioning hoops consist of several of the same number as the main reinforcing bars in the rebar cage; so that when in use, the rebar cage positioning hoops correspond one-to-one with the main reinforcing bars of the pile, and each main reinforcing bar of the pile is confined in the groove of the corresponding U-shaped pin and connected to the bottom support.
[0013] Furthermore, the root of the pin is fixed on the base, and the insert block has a through hole II for one of the top feet of the U-shaped pin to pass through. The insert block consists of two blocks corresponding to the number of top feet of the U-shaped pin.
[0014] Furthermore, the bucket is equipped with a handle.
[0015] Furthermore, the bottom support has an upwardly bent protective edge that wraps around the bottom of the bucket body.
[0016] Furthermore, the slope angle of the bucket body towards the material discharge port is between 110° and 120°.
[0017] The beneficial effects of this utility model are as follows: The auxiliary tool for precast pipe pile construction disclosed in this utility model can define the concrete pouring area and position through the use of the hopper. It is suitable for precast pipe piles with small internal diameter. The hopper body has a slope facing the material discharge port, which makes pouring and discharging more convenient and reduces concrete overflow. The steel cage positioning hoop set on the bottom can integrate the steel cage and the pouring hopper, which has better centering and can resist the girders of concrete during concrete pouring, ensuring that the main reinforcement of the pile in the steel cage is continuously in a stable position, resulting in a more stable structure and better construction effect. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0019] Figure 1 This is a schematic diagram of one embodiment of the present invention;
[0020] Figure 2 This utility model Figure 1 A schematic diagram of the side view structure;
[0021] Figure 3 This utility model Figure 1 A schematic diagram of the base structure;
[0022] Figure 4This utility model Figure 1 A schematic diagram of the structure for assembling the steel cage positioning hoops on the bottom support;
[0023] Figure 5 This is a schematic diagram of another embodiment of the present invention;
[0024] Figure 6 This utility model Figure 5 A schematic diagram of the side view structure;
[0025] Figure 7 This utility model Figure 5 A schematic diagram of the base structure;
[0026] Figure 8 This utility model Figure 5 A schematic diagram of the structure of the bottom support assembly with the steel cage positioning hoop. Detailed Implementation
[0027] Figure 1 As shown in the figure, the auxiliary tool for precast pipe pile construction in this embodiment includes a hopper; the hopper includes a bottom support 2 with a discharge port 1 and a hopper body 3 connected to the bottom support 2, the hopper body 3 having a slope towards the discharge port 1; the bottom support is provided with a steel cage positioning hoop for fixing each main reinforcement bar of the steel cage in a corresponding preset position; in use, the bottom support 2 of the hopper is set on the top surface of the precast pipe pile, and the discharge port 1 of the hopper is connected to the cavity of the precast pipe pile. This solution utilizes a hopper to define the concrete pouring area and location, making it suitable for precast pipe piles with small internal diameters. The separate design of the base 2 and hopper body 3 facilitates hopper cleaning and allows for the use of rebar cage positioning hoops, ensuring the construction quality of the precast pipe piles. The hopper also improves construction efficiency. The hopper body 3 has a slope towards the discharge port 1, making pouring easier and reducing concrete overflow. The rebar cage positioning hoops on the base integrate the rebar cage and the pouring hopper, ensuring relative independence between the rebar cage and the precast pipe pile, preventing pouring disturbances and improving centering. This allows the rebar cage to resist concrete pressure during pouring, ensuring the main reinforcement bars remain in a stable position, resulting in a more stable structure and better construction performance.
[0028] In one implementation, such as Figures 1 to 4 As shown, the rebar cage positioning hoop includes a U-bolt 4, a nut 6 adapted to the U-bolt 4, and a limiting part 5 for installing the U-bolt 4. The limiting part 5 is provided on the bottom support 2 of the hopper. In use, the U-bolt 4 places the main reinforcement bars of the rebar cage in the groove of the U-bolt 4, and the U-bolt 4 is assembled to the limiting part 5 by the nut 6. It should be understood that there are two nuts 6 adapted to the U-bolt 4, which are tightened at both ends of the U-bolt 4 in use, so that the U-bolt 4 limits the corresponding main reinforcement bars of the rebar cage.
[0029] The rebar cage positioning hoops consist of several of the same number as the main reinforcing bars in the rebar cage. This ensures that the rebar cage positioning hoops correspond one-to-one with the main reinforcing bars, limiting their position. Each main reinforcing bar is confined within the groove of its corresponding U-bolt 4 and connected to the base support 2. This further enhances structural strength. Furthermore, the rebar cage positioning hoops are evenly distributed radially around the precast pipe pile along its axial direction, improving the construction quality of the precast pipe pile and reducing mutual interference between adjacent main reinforcing bars.
[0030] In this embodiment, the limiting part 5 is L-shaped, with the horizontal side of the L-shape fixed to the base 2. This design employs welding. A through hole I is provided on the vertical side of the L-shape for the U-bolt 4 to pass through, so that during use, the U-bolt 4 passes through the vertical side of the L-shape and is locked by the corresponding nut 6. The structure of the limiting part 5 ensures that the rebar cage positioning hoop reliably limits the corresponding main reinforcement bars in the rebar cage, reducing the shaking or displacement of the main reinforcement bars in the rebar cage and improving the construction quality of the precast pipe pile.
[0031] In another implementation, such as Figures 5 to 8 As shown, the rebar cage positioning hoop includes a U-shaped pin 7 and a block 8 for installing the U-shaped pin 7; the top foot of the U-shaped pin 7 has an upwardly bent limiting hook 9, and the block 8 is set on the bottom support 2 of the hopper; in use, the U-shaped pin 7 places the main reinforcement of the rebar cage in the groove of the U-shaped pin 7, and the U-shaped pin 7 extends into the block 8 through the limiting hook 9 and is correspondingly limited;
[0032] The rebar cage positioning hoops consist of several of the same number as the main reinforcing bars in the rebar cage; this ensures that the rebar cage positioning hoops correspond one-to-one with the main reinforcing bars of the pile during use, with each main reinforcing bar confined within the groove of the corresponding U-shaped pin 7 and connected to the bottom support 2; and the rebar cage positioning hoops are evenly distributed radially around the axial direction of the precast pipe pile, thereby improving the construction quality of the precast pipe pile and reducing mutual interference between adjacent main reinforcing bars of the pile.
[0033] The root of the pin is fixed to the base 2 by welding. The insertion block 8 has a through hole II for one of the top feet of the U-shaped pin 7 to pass through. There are two insertion blocks 8 corresponding to the number of top feet of the U-shaped pin 7. The structure of the U-shaped pin 7 has a certain limiting function, which can also reduce the shaking or displacement of the main reinforcement of the pile in the steel cage and improve the construction quality of the precast pipe pile. It has the advantages of being lightweight and easy to operate. Moreover, this structure is suitable for precast pipe pile structures with smaller radial dimensions, making it more versatile.
[0034] In this embodiment, a handle 10 is provided on the bucket body 3. This facilitates the handling of the bucket body 3 and improves construction efficiency.
[0035] In this embodiment, the bottom support 2 has an upwardly bent protective edge 11 that wraps around the bottom of the bucket body 3, reducing the risk of grout leakage and also serving to limit and position the bucket body 3, making the assembly of the two more convenient and the combination stable and reliable.
[0036] In this embodiment, the bucket body 3 has a rectangular conical tower structure, with its small-diameter end surrounded by the protective edge 11 of the bottom support 2; the slope angle of the bucket body 3 towards the discharge port 1 is between 110° and 120°. The slope angle of this scheme is 115°, which is beneficial to ensure the discharge of concrete and to control the discharge rate within a certain range, thereby improving the construction quality of precast pipe piles.
[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. An auxiliary tool for the construction of precast pipe piles, characterized in that: Includes a hopper; the hopper includes a base with a discharge port and a hopper body connected to the base, the hopper body having a slope toward the discharge port; the base is provided with a steel cage positioning hoop for fixing each main bar of the steel cage in a corresponding preset position; In use, the bottom support of the hopper is set on the top surface of the precast pipe pile, and the discharge port of the hopper is connected to the cavity of the precast pipe pile.
2. The auxiliary tool for precast pipe pile construction according to claim 1, characterized in that: The rebar cage positioning hoop includes a U-bolt, a nut adapted to the U-bolt, and a limiting part for installing the U-bolt. The limiting part is located on the bottom support of the hopper. In use, the U-bolt places the main reinforcement bars of the rebar cage in the groove of the U-bolt, and the U-bolt is assembled to the limiting part by the nut. The rebar cage positioning hoops consist of several of the same number as the main reinforcing bars in the rebar cage; so that when in use, the rebar cage positioning hoops correspond one-to-one with the main reinforcing bars of the pile to limit their position, and each main reinforcing bar of the pile is limited to the groove of the corresponding U-bolt and connected to the bottom support.
3. The auxiliary tool for precast pipe pile construction according to claim 2, characterized in that: The limiting part is L-shaped, with the horizontal side of the L-shape fixed on the base, and a through hole I for the U-bolt to pass through on the vertical side of the L-shape, so that when in use, the U-bolt passes through the vertical side of the L-shape and is locked by the corresponding nut.
4. The auxiliary tool for precast pipe pile construction according to claim 1, characterized in that: The rebar cage positioning hoop includes a U-shaped pin and a block for installing the U-shaped pin; the top of the U-shaped pin has an upwardly bent limiting hook, and the block is set on the bottom support of the hopper; When in use, the U-shaped pin places the main reinforcement bars of the steel cage in the groove of the U-shaped pin, and the U-shaped pin extends into the insertion block through the limiting hook and is correspondingly limited. The rebar cage positioning hoops consist of several of the same number as the main reinforcing bars in the rebar cage; so that when in use, the rebar cage positioning hoops correspond one-to-one with the main reinforcing bars of the pile, and each main reinforcing bar of the pile is confined in the groove of the corresponding U-shaped pin and connected to the bottom support.
5. The auxiliary tool for precast pipe pile construction according to claim 4, characterized in that: The root of the pin is fixed on the base, and the insert block has a through hole II for one of the pin's top feet to pass through. The insert block consists of two blocks corresponding to the number of pin's top feet.
6. The auxiliary tool for precast pipe pile construction according to claim 1, characterized in that: The bucket is equipped with a handle.
7. The auxiliary tool for precast pipe pile construction according to claim 1, characterized in that: The base has an upward-bent protective rim that wraps around the bottom of the bucket body.
8. The auxiliary tool for precast pipe pile construction according to claim 1, characterized in that: The angle of the bucket body towards the material discharge port is between 110° and 120°.