A finishing device for small-diameter circular arc cross-sections on the surface of micro-hole cast-in-place piles.

By designing a finishing device with a small-diameter circular arc cross section, and utilizing a combination of a fan-shaped panel and a limit block drive rod, the problem of difficult finishing of the inner side of micro-hole cast-in-place piles was solved, achieving efficient and safe pile top finishing operations, and improving construction quality and efficiency.

CN224281285UActive Publication Date: 2026-05-26POWERCHINA CHONGQING ENG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
POWERCHINA CHONGQING ENG CO LTD
Filing Date
2025-07-14
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing finishing devices are difficult to use effectively for finishing work on the inside of micro-hole cast-in-place piles, especially in small-diameter circular arc cross-section structures.

Method used

A surface finishing device with a small-diameter circular arc cross section was designed, including components such as a fan-shaped panel, connecting rod, handle, limiting block, and drive rod. This ensures that the device can penetrate deep into the customized template for surface finishing operations. The cooperation of the limiting block and drive rod improves operational stability and flexibility.

Benefits of technology

It improves the reliability and convenience of finishing the top section of micro-hole cast-in-place piles, ensures construction quality, reduces construction costs and improves work efficiency, and solves the problem that conventional tools cannot penetrate deep into the formwork.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the technical field of finishing devices, specifically a finishing device for small-diameter arc-shaped cross-sections on the surface of micro-hole cast-in-place piles. It includes a panel, a connecting rod fixedly connected to the surface of the panel, and a handle fixedly connected to the other end of the connecting rod. The panel is fan-shaped overall. A sliding rod is slidably connected inside the connecting rod, and a limiting block is fixedly connected to the end of the sliding rod. A V-groove is formed on the surface of the limiting block. A first driving rod is threadedly connected inside the connecting rod, and the first driving rod and the limiting block are rotatably connected internally. This utility model, by setting up the aforementioned finishing device for small-diameter arc-shaped cross-sections, solves the problem that conventional finishing tools cannot finish the top cross-section of micro-hole cast-in-place piles when the exposed cross-section is lower than the top surface of the customized template. This improves the reliability and convenience of finishing the top cross-section of micro-hole cast-in-place piles, while also improving the process quality of the pile top surface.
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Description

Technical Field

[0001] This utility model relates to the field of finishing device technology, and in particular to a finishing device that can be used for small-diameter arc cross-sections on the surface of micro-hole cast-in-place piles. Background Technology

[0002] A surface finishing device is a tool used for concrete surface treatment. Its main function is to smooth and polish the concrete surface after pouring to improve the surface flatness, density and smoothness. It is usually composed of components such as an operating rod, scraper or trowel. It can be pushed manually or driven mechanically and is suitable for concrete construction scenarios such as floors and walls. It can reduce problems such as surface sanding and cracking, and ensure the appearance quality and structural performance of cement projects.

[0003] Existing technologies often have the following drawbacks: In the actual use of the finishing device, when finishing the inner side of the micro-hole cast-in-place pile, the inner side of the micro-hole cast-in-place pile often has a circular annular structure and a narrow internal structure, making it difficult for workers to use traditional finishing tools to finish the inner side of the micro-hole cast-in-place pile.

[0004] Therefore, this utility model provides a finishing device that can be used for small-diameter circular arc cross-sections on the surface of micro-hole cast-in-place piles. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies that make it difficult to perform finishing work on the inner side of micro-hole cast-in-place piles, and to propose a finishing device that can be used for small-diameter circular arc cross-sections on the surface of micro-hole cast-in-place piles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a finishing device for a small-diameter circular arc cross-section on the surface of a micro-hole cast-in-place pile, comprising a panel, a connecting rod fixedly connected to the surface of the panel, and a handle fixedly connected to the other end of the connecting rod, the panel being fan-shaped in general.

[0007] The effect achieved by the above components is as follows: after the panel is processed, it is fan-shaped, which effectively ensures that the finishing device can go deep into the customized template to finish the surface. After the panel is made, the operating handle is welded on. The handle and the panel are connected by connecting rods to ensure that the workers have enough operating space to use the device to finish the surface of the pile top.

[0008] Preferably, the connecting rod is slidably connected to a slide rod inside, and a limit block is fixedly connected to the end of the slide rod.

[0009] The effect achieved by the above components is that the sliding rod inside the connecting rod restricts the movement direction of the limiting block.

[0010] Preferably, the surface of the limiting block is provided with a V-shaped groove.

[0011] The effect achieved by the above components is that the V-groove on the limiting block can improve the stability of the steel pipes when they are in contact.

[0012] Preferably, the connecting rod is internally threaded to a first driving rod, and the first driving rod is internally rotatably connected to the limiting block.

[0013] The effect achieved by the above components is that the limit block can be driven by rotating the first drive rod.

[0014] Preferably, connecting blocks are fixedly connected to both sides of the panel, a limiting strip is slidably connected inside the connecting block, a fixing block is fixedly connected to the end side of the limiting strip, and a rectangular strip is fixedly connected to the lower surface of the fixing block.

[0015] The effect achieved by the above components is that the limiting strip slides inside the connecting block, which restricts the direction of movement of the rectangular strip.

[0016] Preferably, the connecting block is internally threaded with a second drive rod, and the second drive rod is internally rotatably connected to the fixed block.

[0017] The effect achieved by the above components is to drive two second drive rods, which in turn drive the rectangular bar to move.

[0018] In summary:

[0019] 1. By setting the above-mentioned small-diameter arc cross-section finishing device, this utility model solves the problem that conventional finishing tools cannot finish the top section of the micro-hole cast-in-place pile when the pouring height of the exposed section of the micro-hole cast-in-place pile is lower than the top surface of the customized template. This improves the reliability and convenience of finishing the top section of the micro-hole cast-in-place pile, and at the same time improves the process quality of the top surface of the micro-hole cast-in-place pile. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of this utility model from another angle;

[0022] Figure 3 In this utility model Figure 2 A partial structural diagram;

[0023] Figure 4 In this utility model Figure 1 A partial structural diagram.

[0024] Legend: 1. Panel; 2. Connecting rod; 3. Handle; 4. Limiting block; 5. Rectangular strip; 6. First drive rod; 7. Slide rod; 8. Fixing block; 9. Connecting block; 10. Limiting strip; 11. Second drive rod. Detailed Implementation

[0025] Reference Figures 1-4 As shown, this utility model provides a technical solution: a surface finishing device that can be used for small-diameter circular arc cross-sections on the surface of micro-hole cast-in-place piles, including a panel 1.

[0026] The following is a detailed explanation of its overall setup and function.

[0027] In this implementation plan: A connecting rod 2 is fixedly connected to the surface of panel 1, and a handle 3 is fixedly connected to the other end of the connecting rod 2. Panel 1 is fan-shaped. After the panel 1 is processed, it is fan-shaped, which effectively ensures that the finishing device can penetrate into the customized template for finishing. After the panel 1 is made, the operating handle 3 is welded on. The handle 3 is connected to the panel 1 through the connecting rod 2, ensuring that the worker has enough operating space to use the device for finishing work on the top of the pile.

[0028] Specifically, a sliding rod 7 is slidably connected inside the connecting rod 2, and a limiting block 4 is fixedly connected to the end of the sliding rod 7. The sliding rod 7 slides inside the connecting rod 2, which restricts the movement direction of the limiting block 4. A V-groove is formed on the surface of the limiting block 4. The V-groove on the limiting block 4 improves the stability of the steel pipes when they are in contact. A first driving rod 6 is threadedly connected inside the connecting rod 2, and the first driving rod 6 is rotatably connected to the limiting block 4. By rotating the first driving rod 6, the limiting block 4 can be driven. Connecting blocks 9 are fixedly connected to both sides of the panel 1. A limiting strip 10 is slidably connected inside the connecting block 9, and a fixing block 8 is fixedly connected to the end of the limiting strip 10. A rectangular strip 5 is fixedly connected to the lower surface of the fixing block 8. The limiting strip 10 slides inside the connecting block 9, which restricts the movement direction of the rectangular strip 5. A second driving rod 11 is threadedly connected inside the connecting block 9, and the second driving rod 11 is rotatably connected to the fixing block 8. The two second drive rods 11 are driven, which in turn drive the rectangular bar 5 to move.

[0029] Working principle: A finishing device with a small-diameter circular arc cross-section is used when the exposed section of the micro-hole cast-in-place pile is lower than the top surface of the customized template. After the exposed pile head is poured to the design elevation, this device is used for the first and second finishing of the pile top. After the panel 1 is processed, it is fan-shaped, effectively ensuring that the finishing device can penetrate deep into the customized template for finishing. After the panel 1 is made, the operating handle 3 is welded on. The handle 3 is connected to the panel 1 by two connecting rods, ensuring that the worker has sufficient operating space to use the device for pile top finishing. Micro-hole grouting After the surface finishing device for the small-diameter arc cross-section of the pile is manufactured, personnel can work according to the construction plan requirements. This avoids the problem that conventional finishing tools cannot penetrate into the formwork, ensuring the construction quality of the pile top. At the same time, the device is convenient, quick, safe, reliable, and economically efficient. The surface finishing device for the small-diameter arc cross-section of the micro-hole cast-in-place pile effectively solves the problem of finishing the top of small-section, irregularly shaped spatial piles. When finishing work is required for micro-hole cast-in-place piles with different inner diameters, the two second drive rods 11 can be driven first. The second drive rods 11 will drive the torque... The rectangular strip 5 moves, with the limiting strip 10 sliding inside the connecting block 9 to restrict the direction of movement of the rectangular strip 5. This allows for flexible extension of the surface area of ​​the panel 1, facilitating the surface finishing work of micro-hole cast-in-place piles of different sizes. Rotating the first drive rod 6 drives the limiting block 4. The V-groove on the limiting block 4 improves the stability of the steel pipes' contact, preventing panel 1 from wobbling and further enhancing the stability of panel 1 operation. This device effectively performs secondary surface finishing on the pile top. It effectively reduces shrinkage cracks at the pile top, solves the quality problem of exposed cross-section of micro-hole cast-in-place piles, and greatly reduces construction costs and improves construction efficiency while ensuring construction quality, safety and progress. By setting the above-mentioned small-diameter arc cross-section finishing device, it solves the problem that conventional finishing tools cannot finish the top cross-section of micro-hole cast-in-place piles when the pouring height of the exposed cross-section is lower than the top surface of the customized template. It improves the reliability and convenience of finishing the top cross-section of micro-hole cast-in-place piles, and at the same time improves the process quality of the top surface of micro-hole cast-in-place piles.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A finishing device for small-diameter circular arc cross-sections on the surface of micro-hole cast-in-place piles, comprising a panel (1), characterized in that: A connecting rod (2) is fixedly connected to the surface of the panel (1), and a handle (3) is fixedly connected to the other end of the connecting rod (2). The panel (1) is fan-shaped in general.

2. The finishing device for small-diameter circular arc cross-sections on the surface of micro-hole cast-in-place piles according to claim 1, characterized in that: The connecting rod (2) is internally slidably connected to a slide rod (7), and a limit block (4) is fixedly connected to the end side of the slide rod (7).

3. A finishing device for small-diameter circular arc cross-sections on the surface of micro-hole cast-in-place piles according to claim 2, characterized in that: The surface of the limiting block (4) is provided with a V-shaped groove.

4. A finishing device for small-diameter circular arc cross-sections on the surface of micro-hole cast-in-place piles according to claim 2, characterized in that: The connecting rod (2) is internally threaded with a first driving rod (6), and the first driving rod (6) is internally rotatably connected to the limiting block (4).

5. A finishing device for small-diameter circular arc cross-sections on the surface of micro-hole cast-in-place piles according to claim 1, characterized in that: Both sides of the panel (1) are fixedly connected to connecting blocks (9), and the inside of the connecting block (9) is slidably connected to a limit strip (10). The end side of the limit strip (10) is fixedly connected to a fixing block (8), and the lower surface of the fixing block (8) is fixedly connected to a rectangular strip (5).

6. A finishing device for small-diameter circular arc cross-sections on the surface of micro-hole cast-in-place piles according to claim 5, characterized in that: The connecting block (9) is internally threaded with a second drive rod (11), and the second drive rod (11) is internally rotatably connected to the fixing block (8).