A municipal road and bridge pile expanding device
By designing a combination of ring body, extension plate and vacuum cleaner, the pile expansion device can flexibly adapt to piles of different specifications and sizes, and effectively remove dust during the pile expansion process. This solves the problems of limited applicability and low efficiency of existing devices, and improves safety and environmental performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG FENGCHENG CONSTR ENG CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-12
AI Technical Summary
Existing municipal road and bridge piling expansion devices cannot be effectively extended to adapt to pilings of different specifications and sizes, and cannot effectively remove dust during the piling expansion process, resulting in low applicability and efficiency, and serious environmental pollution.
A pile-expanding device comprising a ring, an extension plate, a rotating plate, and a vacuum cleaner was designed. The rotating plate is driven by a servo motor to extend the pile-expanding blade, and the vacuum cleaner removes dust, thereby achieving flexible adaptation of the pile-expanding blade and dust control.
It improves the applicability and efficiency of the pile expansion device, effectively prevents dust splashing, and enhances work efficiency and safety.
Smart Images

Figure CN224351222U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of municipal road and bridge technology, specifically to a pile expansion device for municipal roads and bridges. Background Technology
[0002] In municipal road and bridge engineering, pile expansion devices mainly refer to special mechanical equipment and supporting technologies used to improve the bearing capacity of pile foundations. Their core function is to change the geometric shape of the pile body through physical expansion or cutting processes to form a locally enlarged structure to enhance end resistance and side friction resistance.
[0003] For example, the municipal road and bridge piling expansion device disclosed in application number 202422028963.4 uses a rotating shaft to control the screw rod to drive the support column to contact the ground and position the pile frame. The knob drives the threaded shaft to control the steel rod to insert into the ground to limit the position and angle of the pile frame. Then, the machine body breaks up the soil on the surface of the pile frame to carry out the piling expansion work. This achieves flexible control of the whole device, enhances the practical performance of the whole device, and improves the shortcomings of existing piling machines, which are mostly stationary on the ground and have no resistance to restrain displacement.
[0004] However, the above structure cannot effectively extend the pile expansion tool during use, thus making it unsuitable for pile expansion of different specifications and sizes, thereby reducing its applicability and efficiency. Furthermore, it cannot effectively remove dust during the pile expansion process, thus failing to effectively prevent dust from splashing and polluting the environment, reducing its work efficiency and safety. Therefore, we propose a pile expansion device for municipal roads and bridges. Utility Model Content
[0005] To address the shortcomings of existing technologies, this application proposes a pile expansion device for municipal roads and bridges, which can effectively extend the pile expansion blade, thereby enabling it to adapt to piles of different specifications and sizes, thus improving its applicability and efficiency.
[0006] This utility model provides the following technical solution: a pile widening device for municipal roads and bridges, comprising a ring body, the inner wall of which has a plurality of evenly distributed perforations, through which expansion plates are inserted, the ends of the plurality of expansion plates passing away from each other pass through the perforations and extend out of the ring body to be connected to pile widening cutters, the bottom opposite sides of the plurality of expansion plates being movably connected to connecting rods via rotating shafts and bearings, the top opposite sides of the plurality of connecting rods being movably connected to the same rotating plate via rotating shafts and bearings, the top of the rotating plate being movably connected to a bonding plate via rotating shafts and bearings, the bonding plate being bolted to the top of the ring body, the top of the bonding plate being bolted to a servo motor, and the top end of the rotating shaft on the top of the rotating plate passing through the inner ring of the bearing and connected to the output shaft of the servo motor.
[0007] As a preferred embodiment of this utility model, the top of the ring is bolted to an inverted cylinder, the top of the inverted cylinder is bolted to a vacuum cleaner, the bottom dust inlet of the vacuum cleaner is connected to the inside of the inverted cylinder, and a dust guide tube is sleeved on the right dust outlet of the vacuum cleaner.
[0008] As a preferred embodiment of this utility model, the inverted cylindrical body is fitted with a tube body, the top of the tube body is connected to a cover plate by bolts, and the bottom of the tube body near the right side is provided with a groove for engaging with the dust guide pipe.
[0009] As a preferred embodiment of this utility model, a piston block is slidably connected inside the tube, and several evenly distributed columns are bolted to the bottom edge of the piston block, with the bottom ends of the columns bolted to the top of the inverted cylinder.
[0010] As a preferred embodiment of this utility model, the bottom of the cover plate is bolted to an electric push rod, and the bottom end of the electric push rod is bolted to the top of the piston block.
[0011] As a preferred embodiment of this utility model, the top of the cover plate is movably connected to a top plate via a rotating shaft and a bearing, and the top of the top plate is connected to a drive motor via bolts. The top end of the rotating shaft on the top of the top plate passes through the inner ring of the bearing and is connected to the output shaft of the drive motor.
[0012] As a preferred embodiment of this utility model, a mounting plate is bolted to the right side of the top plate, and mounting holes are respectively opened at the four corners of the right side of the mounting plate.
[0013] The beneficial effects of this utility model are as follows: This technical solution enables the pile expansion cutter to be effectively extended through the cooperation between components such as the ring body, connecting rod, extension plate, and rotating plate, thereby adapting to pile expansion of different specifications and sizes, thus improving its applicability and efficiency. Furthermore, it can effectively remove dust during the pile expansion process, thereby effectively preventing dust from splashing and polluting the environment, and improving its working efficiency and safety. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 for Figure 1 A three-dimensional view viewed from below;
[0016] Figure 3 for Figure 1 Partial 3D view of the bonding panel and other components;
[0017] Figure 4 for Figure 1Partial 3D view of components such as the rotating plate and connecting rod;
[0018] Figure 5 for Figure 1 Partial 3D view of components such as the piston block and column;
[0019] Figure 6 for Figure 1 Partial 3D view of components such as the electric actuator and cover plate;
[0020] Figure 7 for Figure 4 A top-view structural diagram.
[0021] In the diagram: 1. Ring body; 2. Pipe expander; 3. Extension plate; 4. Inverted cylinder; 5. Tube body; 6. Slot; 7. Dust guide pipe; 8. Cover plate; 9. Drive motor; 10. Top plate; 11. Mounting hole; 12. Mounting plate; 13. Rotating plate; 14. Connecting rod; 15. Adhesive plate; 16. Perforation; 17. Servo motor; 18. Electric push rod; 19. Column; 20. Vacuum cleaner; 21. Piston block. Detailed Implementation
[0022] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0023] Example
[0024] like Figures 1 to 7 As shown, a pile widening device for municipal roads and bridges includes: a ring body 1, with a plurality of evenly distributed perforations 16 on the inner wall of the ring body 1, through which expansion plates 3 are inserted, with the ends of the plurality of expansion plates 3 passing through the perforations 16 and extending to the outside of the ring body 1 and connected to pile widening cutter 2, with the bottom sides of the plurality of expansion plates 3 respectively movably connected to connecting rods 14 via shafts and bearings, with the top sides of the plurality of connecting rods 14 movably connected to the same rotating plate 13 via shafts and bearings, with the top of the rotating plate 13 movably connected to a bonding plate 15 via shafts and bearings, the bonding plate 15 being bolted to the top of the ring body 1, and the top of the bonding plate 15 being bolted to a servo motor 17, with the top end of the shaft on the top of the rotating plate 13 passing through the inner ring of the bearing and connected to the output shaft of the servo motor 17.
[0025] The top of the ring body 1 is connected to the inverted cylinder body 4 by bolts, and the top of the inverted cylinder body 4 is connected to the vacuum cleaner 20 by bolts. The bottom dust inlet of the vacuum cleaner 20 is connected to the inside of the inverted cylinder body 4, and the right dust outlet of the vacuum cleaner 20 is fitted with a dust guide tube 7.
[0026] In this embodiment, the pile expansion tool 2 is made able to extend effectively, thereby adapting to pile expansion of different specifications and sizes, thus improving its applicability and efficiency.
[0027] The inverted cylinder 4 is fitted with a tube 5. The top of the tube 5 is bolted to a cover plate 8. The bottom of the tube 5, near the right side, has a groove 6 for connecting with the dust guide pipe 7. A piston block 21 is slidably connected inside the tube 5. Several evenly distributed columns 19 are bolted to the bottom edge of the piston block 21. The bottom ends of the columns 19 are bolted to the top of the inverted cylinder 4. An electric push rod 18 is bolted to the bottom of the cover plate 8. The bottom end of the electric push rod 18 is bolted to the top of the piston block 21. A top plate 10 is movably connected to the top of the cover plate 8 via a rotating shaft and bearing. A drive motor 9 is bolted to the top of the top plate 10. The top end of the rotating shaft on the top of the top plate 10 passes through the inner ring of the bearing and is connected to the output shaft of the drive motor 9. A mounting plate 12 is bolted to the right side of the top plate 10. Mounting holes 11 are respectively opened at the four corners of the right side of the mounting plate 12.
[0028] Implementation plan: This allows for effective dust removal during the pile expansion process, thereby preventing dust from splashing and polluting the environment, and improving work efficiency and safety.
[0029] Working Principle: In this technical solution, the dust guide pipe 7 is first inserted into the dust collection box, and the dust collection box is then connected to the right outer wall of the inverted cylinder 4 using bolts. Subsequently, it is installed in the desired position using the mounting plate 12 and mounting holes 11. Then, the servo motor 17 drives the rotating plate 13 to rotate forward or backward, causing the rotating plate 13 to drive several pile-expanding blades 2 to move away from each other and then converge through several connecting rods 14 and several extension plates 3. This allows the pile-expanding blades 2 to effectively extend, thus adapting to piles of different specifications and sizes, thereby improving... To improve its applicability and efficiency, the drive motor 9 drives the pile-expanding blade 2 to rotate through the cover plate 8, pipe body 5, inverted cylinder 4 and ring body 1. The extension and retraction of the electric push rod 18 can drive the pile-expanding blade 2 to move downward or upward through the piston block 21, column 19, inverted cylinder 4 and ring body 1. The vacuum cleaner 20 can suck the dust in the pile-expanding process into the dust collection box through the ring body 1, inverted cylinder 4 and dust guide pipe 7, so that it can effectively suck up dust in the pile-expanding process, thereby effectively preventing dust from splashing and causing environmental pollution, and improving its working efficiency and safety.
[0030] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.
[0031] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A pile widening device for municipal roads and bridges, characterized in that, The device includes a ring body (1), the inner wall of which is provided with a plurality of evenly distributed perforations (16). An expansion plate (3) is inserted through the perforations (16). The ends of the plurality of expansion plates (3) that are far apart pass through the perforations (16) and extend to the outside of the ring body (1) to be connected to a pile-expanding cutter (2). The bottom sides of the plurality of expansion plates (3) are respectively connected to connecting rods (14) via shafts and bearings. The top sides of the plurality of connecting rods (14) are connected to the same rotating plate (13) via shafts and bearings. The top of the rotating plate (13) is connected to a bonding plate (15) via shafts and bearings. The bonding plate (15) is bolted to the top of the ring body (1). The top of the bonding plate (15) is bolted to a servo motor (17). The top end of the shaft on the top of the rotating plate (13) passes through the inner ring of the bearing and is connected to the output shaft of the servo motor (17).
2. The pile widening device for municipal roads and bridges according to claim 1, characterized in that, The top of the ring (1) is connected to the inverted cylinder (4) by bolts. The top of the inverted cylinder (4) is connected to the vacuum cleaner (20) by bolts. The bottom dust inlet of the vacuum cleaner (20) is connected to the inside of the inverted cylinder (4). A dust guide tube (7) is sleeved on the right dust outlet of the vacuum cleaner (20).
3. A pile widening device for municipal roads and bridges according to claim 2, characterized in that, The inverted cylinder (4) is covered with a tube (5), and the top of the tube (5) is connected to a cover plate (8) by bolts. The bottom of the tube (5) is provided with a groove (6) for the dust guide pipe (7) near the right side.
4. A pile widening device for municipal roads and bridges according to claim 3, characterized in that, A piston block (21) is slidably connected inside the tube (5), and several evenly distributed columns (19) are bolted to the bottom edge of the piston block (21). The bottom ends of the columns (19) are bolted to the top of the inverted cylinder (4).
5. A pile widening device for municipal roads and bridges according to claim 4, characterized in that, The bottom of the cover plate (8) is bolted to an electric push rod (18), and the bottom end of the electric push rod (18) is bolted to the top of the piston block (21).
6. A pile widening device for municipal roads and bridges according to claim 5, characterized in that, The top of the cover plate (8) is movably connected to the top plate (10) via a rotating shaft and bearing. The top of the top plate (10) is connected to the drive motor (9) via bolts. The top end of the rotating shaft on the top of the top plate (10) passes through the inner ring of the bearing and is connected to the output shaft of the drive motor (9).
7. A pile widening device for municipal roads and bridges according to claim 6, characterized in that, The top plate (10) is connected to a mounting plate (12) by bolts on the right side, and mounting holes (11) are respectively opened on the right side of the mounting plate (12) near the four corners.