Permanent steel casing for cast-in-situ bored pile
The servo motor-driven threaded rod system and fixing mechanism solve the problems of easy rusting of steel casing and inconvenient connection methods, achieving efficient rust removal and stable clamping, and improving the efficiency and quality of bored pile construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG YAONAN CONSTR ENG CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-12
AI Technical Summary
In existing bored pile construction, the problem of steel casings being prone to rusting affects construction efficiency and hole quality, and traditional connection methods have problems such as slow construction speed or high cost.
The servo motor-driven threaded rod system and fixing mechanism enable precise grinding and stable clamping of the steel casing. Combined with the arc-shaped slider and telescopic rod, the stability and efficiency of the grinding process are ensured.
It effectively prevents the hole wall from collapsing, ensures that the steel casing does not shake during rust removal, improves the rust removal efficiency of the steel casing, and meets the needs of daily use.
Smart Images

Figure CN224223539U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel casing processing technology, and in particular to a permanent steel casing for bored piles. Background Technology
[0002] Permanent steel casing for bored piles is a crucial structural component in bored pile construction. It is typically made of rolled steel plates in a cylindrical shape. The thickness of the steel plate depends on factors such as project requirements and casing diameter. In some small-scale building foundation construction, thicker steel plates are used for the casing. The casing diameter is generally larger than the designed pile diameter to ensure smooth drilling. The casing diameter can be selected to enhance the overall strength and stability of the casing. Reinforcing ribs are usually welded to the outer wall of the casing. These ribs are typically made of angle steel or channel steel and are installed at regular intervals along the length of the casing. In deeper bored piles...
[0003] There are various ways to connect casings, the most common being welding, flange connection, and quick connection. Welded connections offer good sealing but are relatively slow to construct. Flange connections are easy to disassemble and install, and have high connection strength, but are relatively expensive. Quick connection is a relatively new connection method that uses special connectors to achieve rapid assembly of the casing, effectively improving construction efficiency. However, in current bored pile construction, steel casings play a crucial protective role, effectively preventing borehole collapse and ensuring drilling quality. Traditional steel casings often face the problem of being prone to rust and difficult to handle during construction, affecting construction efficiency and borehole quality. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a permanent steel casing for bored piles, which aims to improve the existing technology in the construction of bored piles. It can effectively prevent the collapse of the hole wall and ensure the quality of drilling. Traditional steel casings often face the problem of being easy to rust and difficult to handle during construction, which affects the construction efficiency and the quality of hole formation.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a permanent steel casing for bored piles, comprising a workbench, a rear plate fixedly connected to the top rear side of the workbench, a bracket fixedly connected to the top of the rear plate, a U-shaped frame fixedly connected to the top of the bracket, a servo motor fixedly connected to the left side of the U-shaped frame, the output end of the servo motor passing through the left side of the U-shaped frame and fixedly connected to a threaded rod, a slider two threadedly connected to the outer wall of the threaded rod, a U-shaped frame two fixedly connected to the top of the slider two, a servo motor three fixedly connected to the rear side of the U-shaped frame, the output end of the servo motor three passing through the rear side of the U-shaped frame and fixedly connected to a threaded rod, a slider one threadedly connected to the outer wall of the threaded rod, a fixing strip fixedly connected to the top right side of the slider one, a servo motor one fixedly connected to the bottom of the fixing strip, a rotating rod fixedly connected to the output end of the servo motor one, a grinding column fixedly connected to the bottom end of the rotating rod, and a fixing mechanism provided on the top of the workbench for limiting and fixing the steel casing.
[0006] As a further description of the above technical solution:
[0007] The fixing mechanism includes a fixing plate, the bottom of which is fixedly connected to the top left side of the workbench. A telescopic rod is fixedly connected to the right side of the fixing plate. A moving block is fixedly connected to the output end of the telescopic rod. An arc-shaped slider is fixedly connected to the bottom of the moving block. Support plates are fixedly connected to the front and rear sides of the top of the arc-shaped slider. A telescopic rod is fixedly connected to an adjacent side of the support plate. A clamping plate is fixedly connected to the output end of the telescopic rod.
[0008] As a further description of the above technical solution:
[0009] A sliding groove is provided on the top right side of the workbench, and the inner side of the sliding groove is slidably connected to the bottom of the arc-shaped slider.
[0010] As a further description of the above technical solution:
[0011] Support rods are fixedly connected to the four corners of the bottom of the workbench, and support columns are fixedly connected to the bottom ends of the support rods.
[0012] As a further description of the above technical solution:
[0013] The bottom of the workbench is fixedly connected to casters near the edge, and all the casters are set at the same horizontal height.
[0014] As a further description of the above technical solution:
[0015] Each of the clamps is fixedly connected to an anti-slip pad on its inner side, and a steel cylinder is provided between two adjacent anti-slip pads.
[0016] As a further description of the above technical solution:
[0017] A battery is fixedly connected to the top left side of the workbench, and a U-shaped groove is opened in the middle of the front side of the workbench. A U-shaped strip is fixedly connected to the inner side of the U-shaped groove.
[0018] As a further description of the above technical solution:
[0019] A controller is fixedly connected to the top left front end of the workbench. The controller is electrically connected to the battery, servo motor one, servo motor two, servo motor three, telescopic rod two, and telescopic rod one.
[0020] This utility model has the following beneficial effects:
[0021] 1. In this utility model, by driving the slider two, which is threadedly connected to the outer wall of the threaded rod two, to move along the inner side of the U-shaped frame one, and after adjusting to the appropriate position, the servo motor three is turned on, and the fixing strip fixedly connected to the slider one moves with the servo motor one. At this time, when the grinding column connected to the rotating rod is in contact with the outer wall of the steel cylinder, the grinding equipment can be adjusted according to the location of rust on the steel casing, thereby improving the grinding effect and meeting the needs of daily use.
[0022] 2. In this utility model, the steel cylinder to be ground is placed directly into the clamping plate, and the telescopic rod is activated to push the clamping plate to fix the steel cylinder. The moving block and the arc-shaped slider are then pushed to push the steel cylinder to fit against the surface of the grinding column. Therefore, it can effectively ensure that the steel casing will not shake during rust removal, improve the rust removal efficiency of the steel casing, and is easy to use. Attached Figure Description
[0023] Figure 1 This is a front perspective view of a permanent steel casing for a bored pile proposed in this utility model;
[0024] Figure 2 This is a partial side view of a permanent steel casing for a bored pile proposed in this utility model;
[0025] Figure 3 This is a partial structural diagram of a permanent steel casing for a bored pile proposed in this utility model;
[0026] Figure 4 This is a bottom view of a permanent steel casing for a bored pile proposed in this utility model;
[0027] Figure 5 This is a structural schematic diagram of a permanent steel casing for a bored pile proposed in this utility model.
[0028] Legend:
[0029] 1. Workbench; 2. Fixing mechanism; 201. Slide groove; 202. Steel cylinder; 203. Moving block; 204. Telescopic rod one; 205. Fixing plate; 206. Arc-shaped slider; 207. Clamping plate; 208. Anti-slip mat; 209. Telescopic rod two; 210. Support plate; 3. U-shaped strip; 4. U-shaped groove; 5. Bracket; 6. U-shaped frame one; 7. Servo motor one; 8. Servo motor two; 9. Battery; 10. Controller; 11. Casters; 12. Rear plate; 13. Fixing strip; 14. U-shaped frame two; 15. Slider one; 16. Threaded rod one; 17. Slider two; 18. Servo motor three; 19. Threaded rod two; 20. Rotating rod; 21. Grinding column; 22. Support rod; 23. Support column. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] Please see the appendix Figure 1 - Appendix Figure 2 This utility model provides an embodiment of a permanent steel casing for a bored pile, comprising a workbench 1, a rear plate 12 fixedly connected to the top rear side of the workbench 1, a bracket 5 fixedly connected to the top of the rear plate 12, a U-shaped frame 6 fixedly connected to the top of the bracket 5, a servo motor 8 fixedly connected to the left side of the U-shaped frame 6, the output end of the servo motor 8 passing through the left side of the U-shaped frame 6 and fixedly connected to a threaded rod 19, a slider 17 threadedly connected to the outer wall of the threaded rod 19, a U-shaped frame 14 fixedly connected to the top of the slider 17, and a servo motor 18 fixedly connected to the rear side of the U-shaped frame 14. The output end of 18 passes through the rear side of the U-shaped frame 14 and is fixedly connected to a threaded rod 16. The outer wall of the threaded rod 16 is threadedly connected to a slider 15. The top right side of the slider 15 is fixedly connected to a fixing strip 13. The bottom of the fixing strip 13 is fixedly connected to a servo motor 7. The output end of the servo motor 7 is fixedly connected to a rotating rod 20. The bottom end of the rotating rod 20 is fixedly connected to a grinding column 21. The top of the worktable 1 is provided with a fixing mechanism 2. The fixing mechanism 2 is used to limit and fix the steel casing. The bottom four corners of the worktable 1 are all fixedly connected to support rods 22. The bottom end of the support rods 22 is fixedly connected to support columns 23.
[0032] Specifically, a bracket 5 is installed via a stable connection. This bracket 5 not only provides support but also a stable mounting foundation for the structure above it. At the top of the bracket 5, the servo motor 28 is not only powerful but also precisely controlled. Its output end cleverly passes through the left side of the U-shaped frame 16 and is tightly connected to a threaded rod 29. On the outer wall of the threaded rod 29, a slider 27 is tightly connected to it via a threaded connection, allowing the slider 27 to move smoothly up and down along the threaded rod 29. The output end of the servo motor 38 also passes through the rear side of the U-shaped frame 24 and is tightly connected to a threaded rod 16. On the outer wall of the threaded rod 16, another slider 15 is tightly connected to it via a threaded connection, allowing the slider 15 to move smoothly left and right along the threaded rod 16. The rotating rod 20 is tightly connected to it, and this rotating rod 20 can perform precise rotational movements according to the drive of the servo motor 7.
[0033] Please see the appendix Figure 3 - Appendix Figure 5 The fixing mechanism 2 includes a fixing plate 205. The bottom of the fixing plate 205 is fixedly connected to the top left side of the workbench 1. A telescopic rod 204 is fixedly connected to the right side of the fixing plate 205. A moving block 203 is fixedly connected to the output end of the telescopic rod 204. An arc-shaped slider 206 is fixedly connected to the bottom of the moving block 203. Support plates 210 are fixedly connected to the front and rear sides of the top of the arc-shaped slider 206. A telescopic rod 209 is fixedly connected to the adjacent side of the support plate 210. A clamping plate 207 is fixedly connected to the output end of the telescopic rod 209. A slide groove 201 is provided on the top right side of the workbench 1. The inner side of the slide groove 201 is slidably connected to the bottom of the arc-shaped slider 206.
[0034] Specifically, a telescopic rod 204 is reliably installed on the right side of the fixed plate 205. This telescopic rod 204 is not only structurally robust and capable of precise telescopic adjustment according to actual needs, but also has a carefully designed moving block 203 firmly fixed at its output end. On the front and rear sides of the top of the arc-shaped slider 206, two support plates 210 are firmly fixed there. These not only enhance the structural strength of the arc-shaped slider 206, but also provide an installation platform for the subsequent telescopic rod 209 and clamping plate 207, enabling the arc-shaped slider 206 to slide smoothly within the slide groove 201, improving the flexibility and stability of the system, and providing strong support for various automated operations.
[0035] Please see the appendix Figure 1 - Appendix Figure 3The bottom of the workbench 1 is fixedly connected to casters 11 near the edge. All casters 11 are set at the same horizontal height. Anti-slip pads 208 are fixedly connected to the inward side of the clamping plate 207. A steel cylinder 202 is set between the adjacent anti-slip pads 208. A storage battery 9 is fixedly connected to the top left side of the workbench 1. A U-shaped groove 4 is opened in the middle of the front side of the workbench 1. A U-shaped strip 3 is fixedly connected to the inner side of the U-shaped groove 4. A controller 10 is fixedly connected to the front left side of the top of the workbench 1. The controller 10 is electrically connected to the storage battery 9, servo motor 1 7, servo motor 2 8, servo motor 3 18, telescopic rod 2 209 and telescopic rod 1 204 respectively.
[0036] Specifically, these casters 11 not only allow the device to move easily on various surfaces, but also greatly improve its flexibility and adaptability. The anti-slip mat 208 is made of high-quality materials, possessing excellent anti-slip and wear-resistant properties. A steel cylinder 202 is installed between adjacent anti-slip mats 208. This steel cylinder 202 not only supports and separates the two clamping plates 207, but also enhances the stability and rigidity of the entire clamping structure to a certain extent. The U-shaped groove 4 not only accommodates the workbench 1, but also provides it with additional operating space. A U-shaped strip 3 is firmly fixed to the inside of the U-shaped groove 4. This U-shaped strip 3 not only serves a decorative and aesthetic purpose, but also enhances the structural strength and stability of the workbench 1 to a certain extent. The controller 10 is responsible for receiving and processing various instructions and signals, and controlling the operation and actions of each component.
[0037] Working principle: First, the steel cylinder 202 is fixed with the fixing mechanism 2. Then, the servo motor 8 is started, which drives the slider 17 threaded on the outer wall of the threaded rod 19 to move along the inner side of the U-shaped frame 6. After adjusting to the appropriate position, the servo motor 18 is turned on, which drives the threaded rod 16 to rotate. This, together with the fixing strip 13 fixed on the slider 15 and the servo motor 7, moves. When the grinding column 21 connected on the rotating rod 20 is in contact with the outer wall of the steel cylinder 202, the grinding equipment can be adjusted according to the location of rust on the steel cylinder, thereby improving the grinding effect and meeting the needs of daily use.
[0038] Then, the arc-shaped slider 206 is fixed to the support plate 210. At this time, the steel cylinder 202 to be ground is placed directly into the clamping plate 207. The telescopic rod 209 is activated, and the clamping plate 207 is pushed to fix the steel cylinder 202. Then, the telescopic rod 204 fixed on the fixing plate 205 is activated, and the moving block 203 and the arc-shaped slider 206 are pushed to push the steel cylinder 202 to fit against the surface of the grinding column 21. Therefore, it can effectively ensure that the steel casing will not shake during rust removal, improve the rust removal efficiency of the steel casing, and facilitate use.
[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A permanent steel casing for bored piles, comprising a workbench (1), characterized in that: A rear plate (12) is fixedly connected to the top rear side of the workbench (1). A bracket (5) is fixedly connected to the top of the rear plate (12). A U-shaped frame (6) is fixedly connected to the top of the bracket (5). A servo motor (8) is fixedly connected to the left side of the U-shaped frame (6). The output end of the servo motor (8) passes through the left side of the U-shaped frame (6) and is fixedly connected to a threaded rod (19). A slider (17) is threadedly connected to the outer wall of the threaded rod (19). A U-shaped frame (14) is fixedly connected to the top of the slider (17). A servo motor (18) is fixedly connected to the rear side of the U-shaped frame (14). The output end of the servo motor three (18) passes through the rear side of the U-shaped frame two (14) and is fixedly connected to the threaded rod one (16). The outer wall of the threaded rod one (16) is threadedly connected to the slider one (15). The top right side of the slider one (15) is fixedly connected to the fixing strip (13). The bottom of the fixing strip (13) is fixedly connected to the servo motor one (7). The output end of the servo motor one (7) is fixedly connected to the rotating rod (20). The bottom end of the rotating rod (20) is fixedly connected to the grinding column (21). The top of the worktable (1) is provided with a fixing mechanism (2). The fixing mechanism (2) is used to limit and fix the steel casing.
2. The permanent steel casing for a bored pile according to claim 1, characterized in that: The fixing mechanism (2) includes a fixing plate (205). The bottom of the fixing plate (205) is fixedly connected to the top left side of the workbench (1). A telescopic rod (204) is fixedly connected to the right side of the fixing plate (205). A moving block (203) is fixedly connected to the output end of the telescopic rod (204). An arc-shaped slider (206) is fixedly connected to the bottom of the moving block (203). A support plate (210) is fixedly connected to the front and rear sides of the top of the arc-shaped slider (206). A telescopic rod (209) is fixedly connected to the adjacent side of the support plate (210). A clamping plate (207) is fixedly connected to the output end of the telescopic rod (209).
3. A permanent steel casing for a bored pile according to claim 1, characterized in that: The top right side of the workbench (1) is provided with a slide groove (201), and the inner side of the slide groove (201) is slidably connected to the bottom of the arc-shaped slider (206).
4. A permanent steel casing for a bored pile according to claim 1, characterized in that: The workbench (1) has four fixed corners at the bottom, each with a support rod (22) and a support column (23) fixedly connected to the bottom of the support rod (22).
5. A permanent steel casing for a bored pile according to claim 1, characterized in that: The bottom of the workbench (1) is fixedly connected with casters (11) near the edge, and multiple casters (11) are set at the same horizontal height.
6. A permanent steel casing for a bored pile according to claim 2, characterized in that: Anti-slip pads (208) are fixedly connected to the inward side of each clamp (207), and steel cylinders (202) are provided between adjacent anti-slip pads (208).
7. A permanent steel casing for a bored pile according to claim 1, characterized in that: A battery (9) is fixedly connected to the top left side of the workbench (1), and a U-shaped groove (4) is opened in the middle of the front side of the workbench (1). A U-shaped strip (3) is fixedly connected to the inner side of the U-shaped groove (4).
8. A permanent steel casing for a bored pile according to claim 1, characterized in that: A controller (10) is fixedly connected to the top left front end of the workbench (1). The controller (10) is electrically connected to the battery (9), servo motor one (7), servo motor two (8), servo motor three (18), telescopic rod two (209) and telescopic rod one (204).