A pressing device for post-inserted reinforcement pressure-filled pile reinforcement cage
By combining the limiting components and the vibrator, the problems of slippage and detachment during the lowering of the rebar cage were solved, achieving stable connection and rapid assembly and disassembly, thus improving the accuracy and safety of construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CCCC SECOND PUBLIC BUREAU FIFTH ENG CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-24
AI Technical Summary
The existing rebar cage pressing device lacks a stable clamping and connecting structure during construction, which makes it easy for the rebar cage and the device to slide or fall off, affecting the lowering accuracy and construction safety.
The design combines a limiting component and a vibrator. The limiting ring contacts the steel cage, and the elastic deformation of the spring achieves a stable connection. The cooperation of the conical block and the limiting ball enables quick assembly and disassembly, solving the problem of time-consuming and labor-intensive assembly and disassembly of traditional devices.
It improves the stability and construction efficiency of lowering the rebar cage, reduces accuracy deviations and safety hazards, and enhances the flexibility and efficiency of construction.
Smart Images
Figure CN224549131U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel cage construction technology, and in particular to a pressing device for steel cages used in post-insertion reinforcement piles. Background Technology
[0002] In the field of building pile foundation construction, the post-insertion reinforcement grouting pile technology is widely used in the foundation construction of high-rise buildings, bridges, rail transit and other projects due to its advantages such as high pile formation efficiency, low environmental pollution and adaptability to complex geological conditions. The core process of this technology is to drill a long spiral hole to the design depth, pump concrete into the pile hole while lifting the drill, and form a plain concrete pile. Then, the reinforcement cage needs to be precisely pressed down into the not fully solidified concrete so that the reinforcement cage and concrete can be combined to form a complete load-bearing pile. Whether the reinforcement cage can be successfully and accurately lowered to the predetermined depth according to the design requirements directly affects the bearing capacity, integrity and structural safety of the pile foundation. Therefore, the pressing device used to assist in the lowering of the reinforcement cage has become a key piece of equipment in the construction of post-insertion reinforcement grouting piles.
[0003] In existing technologies, rebar cage lowering devices are mostly designed with mechanical transmission or simple power assistance as the core concept. Common structures include using a crane hook and wire rope to lift the rebar cage, and lowering the rebar cage by lowering the hook, or setting a load-bearing beam on the top of the rebar cage and using hydraulic jacks to apply vertical pressure to the beam to push the rebar cage into the concrete. Some devices will add a vibration motor to the load-bearing structure, and reduce the resistance of lowering the rebar cage by the impact force generated by the vibration. The technical principle is mainly to rely on the externally applied vertical force or vibration energy to overcome the concrete's gripping force on the rebar cage and the friction force of the hole wall to realize the lowering of the rebar cage.
[0004] However, in the existing technology, the pressing device is prone to relative slippage or detachment between the steel cage and the device during the lowering process due to the lack of a stable clamping and connecting structure for the steel cage. When encountering sudden resistance such as local solidification of concrete or bulging of the borehole wall, the steel cage cannot keep synchronous with the device. This not only leads to deviations in lowering accuracy and affects the final pile quality, but also causes safety hazards such as steel cage tilting and main reinforcement bending due to slippage, increasing the construction rework rate and cost. Therefore, a pressing device for steel cages of post-insertion reinforcement piles is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above deficiencies, this utility model provides a pressing device for the reinforcing cage of a post-inserted reinforcing bar pile, which aims to improve the problem that the reinforcing cage and the device are prone to relative sliding or falling off due to the lack of stable clamping and connecting structures in the existing reinforcing cage pressing device.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A pressing device for a reinforcing cage for a post-insertion reinforced concrete pile includes a connecting plate, a vibrator is provided on the top of the connecting plate, a lifting lug is fixedly connected to the top of the connecting plate, a vibrating column is fixedly connected to the bottom of the connecting plate, and left and right symmetrical limiting components are provided at the bottom of the connecting plate.
[0008] The limiting component includes a fixing frame, one side of which is fixedly connected to the bottom of the connecting plate. Nuts are fixedly connected to both sides of the fixing frame. Each of the nuts is threaded with a screw rod. One end of each screw rod is rotatably connected to a transmission plate. A spring is provided on one side of the transmission plate. One end of the spring is fixedly connected to the side wall of the transmission plate, and the other end is fixedly connected to a limiting ring. The limiting ring is in contact with the reinforcing cage. The vibrator is equipped with symmetrical disassembly components.
[0009] As a further description of the above technical solution:
[0010] The disassembly assembly includes a fixing block and a support column. The bottom of the fixing block is fixedly connected to the inside of the vibrator, and the top of the support column is fixedly connected to the lower surface of the fixing block.
[0011] As a further description of the above technical solution:
[0012] The support column has multiple limiting balls slidably connected inside, and the fixing block has a sliding shaft slidably connected inside.
[0013] As a further description of the above technical solution:
[0014] The connecting plate has a slot inside, and the limiting ball engages with the slot.
[0015] As a further description of the above technical solution:
[0016] A pull plate is fixedly connected to the top of the sliding shaft, and a conical block is fixedly connected to the bottom of the pull plate.
[0017] As a further description of the above technical solution:
[0018] The outer wall of the conical block is in contact with the limiting ball, and a spring is sleeved on the outer wall of the sliding shaft.
[0019] As a further description of the above technical solution:
[0020] One end of the spring is fixedly connected to the inner wall of the fixed block, and the other end is fixedly connected to the side wall of the conical block.
[0021] This utility model has the following beneficial effects:
[0022] 1. In this utility model, by rotating the screw, the limiting ring is brought into contact with the reinforcing bar. The spring allows for a small range of displacement during vibration, thus achieving the effect of fixing the device to the reinforcing bar cage. This solves the problem of accuracy deviation caused by relative sliding or falling off during the lowering process, and improves the stability and construction efficiency of the lowering of the reinforcing bar cage.
[0023] 2. In this utility model, the conical block is moved by pulling the pull plate, and the movement of the conical block releases the limiting ball, allowing it to slide freely inside the support column and break free from the slot restriction, thereby achieving the effect of quick disassembly and assembly of the vibrator. This solves the problem of time-consuming and laborious disassembly and assembly of traditional vibrators, which delays the construction progress, and improves the flexibility of the device to adapt to different working conditions and the construction efficiency. Attached Figure Description
[0024] Figure 1 This is a three-dimensional schematic diagram of a pressing device for a reinforcing cage of a post-insertion reinforced concrete pile, as proposed in this utility model.
[0025] Figure 2 This is a schematic diagram of the structure of a vibrating column for a pressing device of a post-insertion reinforcement cage for a pressurized pile.
[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0027] Figure 4 This is a structural schematic diagram of the connecting plate of the pressing device for the reinforcing cage of a post-insertion reinforced concrete pile according to the present invention.
[0028] Figure 5 for Figure 4 Enlarged view of point B in the middle.
[0029] Legend:
[0030] 1. Connecting plate; 2. Vibration column; 3. Lifting lug; 4. Vibrator; 5. Fixing frame; 6. Nut; 7. Screw; 8. Transmission plate; 9. Spring 1; 10. Limiting ring; 11. Fixing block; 12. Sliding shaft; 13. Pull plate; 14. Slot; 15. Conical block; 16. Spring 2; 17. Support column; 18. Limiting ball. Detailed Implementation
[0031] 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.
[0032] Reference Figure 1 - Figure 3 The present invention provides an embodiment of a pressing device for a reinforcing cage for a post-insertion reinforced concrete pile, comprising a connecting plate 1, which serves as the top bearing platform of the device, with a vibration drive component integrated above and a reinforcing cage limiting structure connected below. A vibrator 4 is provided on the top of the connecting plate 1 to provide continuous vibration force for lowering the reinforcing cage to reduce the lowering resistance. A lifting lug 3 is fixedly connected to the top of the connecting plate 1. The lifting lug 3 adopts a closed-loop structure and can realize the overall movement and lifting operation of the entire device through the hook of the lifting equipment. A vibration column 2 is fixedly connected to the bottom of the connecting plate 1. A left-right symmetrical limiting component is provided at the bottom of the connecting plate 1 to form a stable clamping on the reinforcing cage from both sides.
[0033] The limiting component includes a fixing frame 5, which has a "door" shaped frame structure. One side of the fixing frame 5 is vertically fixed to the bottom edge of the connecting plate 1 by welding. The other side of the fixing frame 5 is fixed to the bottom of the connecting plate 1. Nuts 6 are fixedly connected to both sides of the fixing frame 5. Each of the multiple nuts 6 is threaded with a screw 7. One end of each screw 7 is rotatably connected to a transmission plate 8, ensuring that the transmission plate 8 only moves horizontally and does not rotate with the screw 7 when the screw 7 rotates. A spring 9 is provided on one side of the transmission plate 8. One end of the spring 9 is fixedly connected to the side wall of the transmission plate 8, and the other end is fixedly connected to a limiting ring 10. The limiting ring 10 has an arc-shaped structure, and its inner arc matches the contour of the outer wall of the rebar cage. It achieves lateral limiting of the rebar cage by closely contacting the outer wall of the rebar cage. The limiting ring 10 is in contact with the rebar cage. The vibrator 4 is provided with symmetrical disassembly components for quick disassembly and assembly between the vibrator 4 and the connecting plate 1.
[0034] Reference Figure 4 and Figure 5The disassembly assembly includes a fixing block 11 and a support column 17. The fixing block 11 has a block-shaped structure, and its bottom is fixedly connected to the inner bottom wall of the vibrator 4 by bolts. The support column 17 has a hollow column-shaped structure, and its top is vertically fixedly connected to the center of the lower surface of the fixing block 11. The bottom of the fixing block 11 is fixedly connected to the inside of the vibrator 4, and the top of the support column 17 is fixedly connected to the lower surface of the fixing block 11. Multiple limiting balls 18 are slidably connected inside the support column 17. Multiple limiting balls 18 are evenly distributed along the circumference inside the support column 17. The limiting balls 18 can slide freely within the radial through holes of the support column 17, and some balls protrude from the outer wall of the support column 17. A sliding shaft 12 is connected to a connecting plate 1, and a slot 14 is provided inside the connecting plate 1. A limiting ball 18 engages with the slot 14. A pull plate 13 is fixedly connected to the top of the sliding shaft 12, and a conical block 15 is fixedly connected to the bottom of the pull plate 13. The conical block 15 has a truncated cone structure that is narrow at the top and wide at the bottom. Its outer wall is in close contact with the spherical surface of the limiting ball 18. It can push the limiting ball 18 to slide radially through its own axial movement. The outer wall of the conical block 15 is in contact with the limiting ball 18. A spring 16 is sleeved on the outer wall of the sliding shaft 12 to provide a continuous downward pushing force to the conical block 15 to maintain the engaging state of the limiting ball 18. One end of the spring 16 is fixedly connected to the inner wall of the fixing block 11, and the other end is fixedly connected to the side wall of the conical block 15.
[0035] Working Principle: When using this pressing device for post-insertion reinforced concrete piles, the vibrating column 2 is first inserted into the reinforced concrete cage by a person. Then, the vibrator 4 drives the vibrating column 2 to vibrate, thus pressing down the reinforced concrete cage. During the pressing process, the person rotates the screw 7, causing the transmission plate 8 to slide inside the fixed frame 5, which in turn drives the limiting ring 10 to contact the reinforced concrete cage, compressing the spring 9 and causing the spring 9 to undergo elastic deformation. This achieves the function of fixing the device to the reinforced concrete cage, preventing slippage during the pressing process. The spring 9 allows for a small range of movement of the reinforced concrete cage during the vibratory pressing process, preventing... The rigid connection causes harm. When the vibrator 4 needs maintenance or replacement, the user can pull the pull plate 13. Under the action of the pulling force, the sliding shaft 12 slides inside the fixed block 11, which in turn drives the conical block 15 to move synchronously. During the movement of the conical block 15, the spring 16 is squeezed, causing the spring 16 to undergo elastic deformation and store elastic potential energy. At the same time, the movement of the conical block 15 will also release the limiting ball 18. Since there is no squeezing force from the conical block 15, the limiting ball 18 can slide freely inside the support column 17, thereby disengaging from the slot 14 and unlocking it, which makes it convenient for the user to quickly maintain and replace the vibrator 4.
[0036] 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 pressing device for a reinforcing cage in a post-insertion reinforced concrete pile, comprising a connecting plate (1), characterized in that: The top of the connecting plate (1) is provided with a vibrator (4), the top of the connecting plate (1) is fixedly connected with a lifting lug (3), the bottom of the connecting plate (1) is fixedly connected with a vibrating column (2), and the bottom of the connecting plate (1) is provided with left and right symmetrical limiting components. The limiting component includes a fixing frame (5), one side of which is fixedly connected to the bottom of the connecting plate (1). Nuts (6) are fixedly connected to both sides of the fixing frame (5). A screw (7) is threaded inside each of the nuts (6). A transmission plate (8) is rotatably connected to one end of each screw (7). A spring (9) is provided on one side of the transmission plate (8). One end of the spring (9) is fixedly connected to the side wall of the transmission plate (8), and the other end is fixedly connected to a limiting ring (10). The limiting ring (10) is in contact with the reinforcing cage. The vibrator (4) is provided with symmetrical disassembly components.
2. The pressing device for a reinforcing cage of a post-inserted reinforcing bar pile according to claim 1, characterized in that: The disassembly assembly includes a fixing block (11) and a support column (17). The bottom of the fixing block (11) is fixedly connected to the inside of the vibrator (4), and the top of the support column (17) is fixedly connected to the lower surface of the fixing block (11).
3. The pressing device for a reinforcing cage in a post-insertion reinforced concrete pile according to claim 2, characterized in that: The support column (17) has multiple limiting balls (18) slidably connected inside, and the fixing block (11) has a sliding shaft (12) slidably connected inside.
4. The pressing device for a reinforcing cage of a post-inserted reinforcing bar pile according to claim 3, characterized in that: The connecting plate (1) has a slot (14) inside, and the limiting ball (18) engages with the slot (14).
5. A pressing device for a reinforcing cage in a post-insertion reinforced concrete pile according to claim 4, characterized in that: The top end of the sliding shaft (12) is fixedly connected to a pull plate (13), and the bottom end of the pull plate (13) is fixedly connected to a conical block (15).
6. A pressing device for a reinforcing cage in a post-insertion reinforced concrete pile according to claim 5, characterized in that: The outer wall of the conical block (15) is in contact with the limiting ball (18), and the outer wall of the sliding shaft (12) is fitted with a spring (16).
7. A pressing device for a reinforcing cage in a post-insertion reinforced concrete pile according to claim 6, characterized in that: One end of the second spring (16) is fixedly connected to the inner wall of the fixed block (11), and the other end is fixedly connected to the side wall of the conical block (15).