Cement mixing pile forming device

Abstract

The utility model belongs to the technical field of soft soil foundation stirring, and discloses a cement stirring pile forming device which comprises a workbench, a supporting assembly, a lifting assembly, a stirring assembly and a signal transmission assembly, the stirring assembly comprises a stirring piece and a rotation driving piece, the rotation driving piece drives the stirring piece to rotate around the axis, and meanwhile the stirring piece moves up and down along with the lifting assembly; any one of the signal transmitter and the signal receiver is installed on the side wall of the stirring piece and rotates along with the stirring piece, the other one is installed on the lifting assembly and is fixed, the signal transmitter and the signal receiver are in communication connection, the number of rotation turns of the stirring piece is recorded according to the number of received signals, the descending depth of the stirring piece is calculated, and it is judged that the stirring piece enters sludge layers with different hardness. Cement paste with different proportions and concentrations is injected into sludge layers with different hardness through the bottom of the stirring piece, and forming of a pile body is achieved. When piling is carried out on sludge layers with different hardness, the curing requirements of different hardness levels can be met, and the stirring uniformity, the overall strength of the pile body and the foundation reinforcing effect are improved.

Description

Technical Field

[0001] This utility model relates to the field of soft soil foundation mixing technology, and in particular to a cement mixing pile forming device. Background Technology

[0002] When constructing cement mixing piles on riverbeds with multi-layered silt characteristics, the silt layer on the riverbed is often formed by long-term deposition. The particle composition, compaction degree and organic matter content of the sediments at different times are different, which will lead to significant differences in the strength, density and water content of the silt layer at different depths. Therefore, when driving piles on multi-layered silt riverbeds, the problem of silt layer hardness stratification will be encountered.

[0003] Traditional cement mixing pile forming devices typically use a fixed cement dosage. However, due to the significant differences in the physical properties of multiple silt layers, a single cement dosage is insufficient to meet the curing requirements of different hardness levels. This may result in an upper layer that is too thin, leading to weak pile support, or a lower layer that is too thick, resulting in insufficient mixing, uneven pile structure, and affecting the overall strength and reinforcement effect of the pile.

[0004] Therefore, there is an urgent need for a cement mixing pile forming device to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a cement mixing pile forming device to solve the problem in the prior art that when encountering stratified silt layers, it can take into account the solidification requirements of different hardness levels, improve the mixing uniformity, the overall strength of the pile body, and the foundation reinforcement effect.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Cement mixing pile forming device, used for pile driving in riverbeds with multiple silt layers, including:

[0008] Workbench;

[0009] A support assembly is disposed on the worktable;

[0010] A lifting assembly, which is capable of moving vertically on the support assembly;

[0011] A mixing assembly includes a mixing element and a rotary drive element. The mixing element is mounted on the lifting assembly and can move up and down vertically with the lifting assembly. The rotary drive element is mounted on the lifting assembly, and its output end is connected to the mixing element. It can drive the mixing element to rotate around its axis, and cement slurry can be injected into the silt layer along the bottom of the mixing element.

[0012] The signal transmission component includes a signal transmitter and a signal receiver. One of the signal transmitter and the signal receiver is disposed on the side wall of the stirring member and can rotate with the stirring member. The other is fixedly disposed on the lifting component. The signal transmitter and the signal receiver are positioned opposite each other and can communicate with each other.

[0013] Furthermore, the mixing component includes a drill rod, a drill bit, and multiple S-shaped mixing blades. The top end of the drill rod is connected to the lifting assembly, and the bottom end of the drill rod is connected to the drill bit. The multiple S-shaped mixing blades are disposed on the lower end side wall of the drill rod and located above the drill bit. Each S-shaped mixing blade has a discharge port for spraying the cement slurry.

[0014] Furthermore, multiple S-shaped stirring blades are symmetrically arranged along both sides of the sidewall of the drill rod and spaced apart along the axial direction of the drill rod.

[0015] Furthermore, each of the S-shaped stirring blades is provided with a plurality of discharge ports spaced apart, and the plurality of discharge ports are circular.

[0016] Furthermore, the diameter of the discharge port on each of the S-shaped stirring blades gradually increases in the direction away from the drill rod.

[0017] Furthermore, the support assembly includes a main pile frame and a support rod; the main pile frame is placed vertically on one side of the workbench, the lifting assembly is slidably connected to the main pile frame, and the support rod is inclined between the main pile frame and the workbench.

[0018] Furthermore, the lifting assembly includes a lifting frame and a lifting drive component. The top end of the stirring component passes through the base of the lifting frame and partially extends out of the base. One of the signal transmitter and the signal receiver is located on the side wall of the lifting frame, and the other is located on the top side wall of the stirring component. The lifting drive component is mounted on the support assembly. The output end of the lifting assembly is connected to the lifting frame to drive the lifting frame to move up and down in the vertical direction.

[0019] Furthermore, the rotary drive includes an electric drive and a reduction gearbox. The electric drive is mounted on the lifting assembly. The input end of the reduction gearbox is connected to the output end of the electric drive, and the output end of the reduction gearbox is connected to the stirring member to drive the stirring member to rotate.

[0020] Furthermore, a counterweight is detachably provided on the workbench.

[0021] Furthermore, the workbench is equipped with wheels at its bottom, and a driver's cab is located on the side of the workbench away from the support assembly. The driver's cab, the lifting assembly, the stirring assembly, and the signal transmission assembly are electrically connected.

[0022] The beneficial effects of this utility model are:

[0023] This invention provides a cement mixing pile forming device, including a workbench, a support assembly, a lifting assembly, a mixing assembly, and a signal transmission assembly. Through the coordinated operation of the mixing assembly, signal transmission assembly, and lifting assembly, cement slurry of different concentrations is injected into silt layers of varying hardness, thereby improving the uniformity and strength of the pile. A rotary drive unit drives the mixing assembly to rotate around its axis, providing rotational power. Simultaneously, the mixing assembly moves up and down with the lifting assembly, ensuring sufficient time for the mixing assembly to remain in silt layers of varying hardness, achieving layer-by-layer mixing. One of the signal transmitter and receiver is installed on the side wall of the mixing assembly and rotates with it, while the other is fixed on the lifting assembly. The two are connected for communication. By recording the number of received signals, the number of rotations of the mixing assembly is calculated, and the depth of penetration is estimated, determining the silt layer of varying hardness. The cement slurry can be proportioned according to the silt layer of varying hardness and injected into the bottom of the mixing assembly to form the pile, ensuring uniform distribution of the cement slurry, meeting the curing requirements of all hardness levels, improving mixing uniformity, overall pile strength, and foundation reinforcement effect. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of the cement mixing pile forming device of this utility model;

[0025] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 yes Figure 1 Enlarged view of section B in the middle.

[0027] In the picture:

[0028] 1. Workbench; 2. Support assembly; 21. Main pile frame; 22. Support rod; 3. Lifting assembly; 31. Lifting frame; 4. Mixing assembly; 41. Mixing component; 411. Drill rod; 412. Drill bit; 413. S-shaped mixing blade; 414. Discharge port; 42. Rotary drive component; 5. Signal transmission assembly; 51. Signal transmitter; 52. Signal receiver; 6. Counterweight; 7. Cab; 8. Wheels. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] Please refer to Figures 1 to 3 As shown, this utility model provides a cement mixing pile forming device for pile driving in riverbeds with multiple silt layers. It includes a workbench 1, a support assembly 2, a lifting assembly 3, a mixing assembly 4, and a signal transmission assembly 5. The support assembly 2 is mounted on the workbench 1, and the lifting assembly 3 can move vertically on the support assembly 2. The mixing assembly 4 includes a mixing element 41 and a rotary drive element 42. The mixing element 41 is mounted on the lifting assembly 3 and can move vertically with the lifting assembly 3. The rotary drive element 42 is mounted on the lifting assembly 3, and its output end is connected to the mixing element 41, driving the mixing element 41 to rotate around its axis. Cement slurry can be injected into the silt layer along the bottom of the mixing element 41. The signal transmission assembly 5 includes a signal transmitter 51 and a signal receiver 52. Either the signal transmitter 51 or the signal receiver 52 is mounted on the side wall of the mixing element 41 and can rotate with the mixing element 41. The other is fixedly mounted on the lifting assembly 3. The signal transmitter 51 and the signal receiver 52 are positioned opposite each other and can communicate with each other.

[0034] Through the coordinated operation of the mixing component 4, the signal transmission component 5, and the lifting component 3, cement slurry of different concentrations is injected into silt layers of varying hardness, thereby improving the uniformity and overall strength of the pile. The rotating drive component 42 drives the mixing component 41 to rotate around its axis, providing rotational power to the mixing component 41. Simultaneously, the mixing component 41 moves up and down with the lifting component 3, ensuring that the mixing component 41 remains in silt layers of varying hardness for a sufficient time, achieving layer-by-layer mixing. Figure 3 As shown, either the signal transmitter 51 or the signal receiver 52 is installed on the side wall of the mixing component 41 and rotates with it, while the other is installed on the lifting assembly 3 and remains stationary. The two are connected in communication. By recording the number of rotations of the mixing component 41 through the number of received signals, the depth of descent can be calculated, and it can be determined that it has entered a silt layer of different hardness. The cement slurry can be proportioned according to the silt layer of different hardness and injected into the silt layer of different hardness through the bottom of the mixing component 41 to achieve the formation of the pile body, ensure that the cement slurry is evenly distributed, take into account the curing requirements of all hardness levels, improve the mixing uniformity, the overall strength of the pile body, and the foundation reinforcement effect.

[0035] Combination Figure 1 and Figure 2 As shown, specifically, the mixing component 41 includes a drill rod 411, a drill bit 412, and multiple S-shaped mixing blades 413. The top end of the drill rod 411 is connected to the lifting assembly 3, and the bottom end of the drill rod 411 is connected to the drill bit 412. Multiple S-shaped mixing blades 413 are located on the lower end sidewall of the drill rod 411, above the drill bit 412. Each S-shaped mixing blade 413 has a discharge port 414 for injecting cement slurry. The connection between the top end of the drill rod 411 and the lifting assembly 3, and the connection between the bottom end of the drill rod 411 and the drill bit 412, ensures the overall stability of the mixing component 41 and precise depth control. Multiple S-shaped mixing blades 413 are all installed on the lower end sidewall of the drill rod 411, and... Located above the drill bit 412, the mixing and grouting area is concentrated near the bottom of the pile, allowing for thorough mixing of the injected cement slurry during drilling. Each S-shaped mixing blade 413 has a discharge port 414, enabling precise injection of cement slurry and ensuring its even distribution within the silt layer during mixing. This ensures that silt layers at different depths receive cement slurry of appropriate concentration. The curved shape of the S-shaped mixing blade 413 increases the contact area with the silt layer and cement slurry, and it easily generates local vortices during rotation. This allows for the rapid entrainment of viscous cement slurry and silt layer into the mixing area, promoting more cross-flow during mixing and thus improving mixing efficiency.

[0036] like Figure 2As shown, furthermore, multiple S-shaped stirring blades 413 are symmetrically arranged on both sides of the side wall of the drill rod 411 and spaced apart along the axial direction of the drill rod 411. The symmetrical arrangement of the S-shaped stirring blades 413 on both sides of the drill rod 411 ensures balanced force during rotation, avoiding deviation or vibration caused by uneven force on one side of the stirring blade, ensuring that the stirring range covers the entire area around the drill rod 411, improving the uniformity of mixing of cement slurry and silt, and enhancing the stirring stability. The spaced arrangement of the stirring blades along the axial direction creates a stepped propulsion effect during rotation of the S-shaped stirring blades 413, forming a continuous stirring and conveying effect of cement slurry, accelerating the full mixing of cement slurry and silt, and ensuring that the cement slurry is fully dispersed at different depths, thereby improving the overall curing quality and curing efficiency.

[0037] Furthermore, each S-shaped mixing blade 413 is provided with multiple discharge ports 414 at intervals, and the multiple discharge ports 414 are circular. The multiple discharge ports 414 are arranged at intervals so that the cement slurry is sprayed evenly at multiple positions along the mixing blade, and will not be concentrated in a certain area, thus avoiding the problem of local accumulation or uneven distribution of cement slurry. Compared with other shapes (such as slit or rectangular) circular discharge ports 414 are less prone to clogging, and circular discharge ports 414 have better hydrodynamic characteristics, ensuring smooth and stable slurry discharge.

[0038] Optionally, the shape of the discharge port 414 may be set to a rectangle, etc., and no specific limitation is made here.

[0039] In some embodiments, the diameter of the outlet 414 on each S-shaped mixing blade 413 gradually increases in the direction away from the drill rod 411. As the cement slurry flows inside the mixing blade, it is affected by fluid resistance, resulting in lower slurry pressure at the position away from the drill rod 411, which leads to a decrease in flow rate. By increasing the diameter of the outlet 414 at the far end, the pressure loss can be compensated, ensuring that the slurry output at different positions is uniform, ensuring that the cement slurry content in each part of the pile is consistent, and improving the overall mixing uniformity.

[0040] like Figure 1 As shown, in this embodiment, the support assembly 2 includes a main pile frame 21 and a support rod 22. The main pile frame 21 is placed vertically on one side of the workbench 1, and the lifting assembly 3 is slidably connected to the main pile frame 21. The support rod 22 is inclined between the main pile frame 21 and the workbench 1. The main pile frame 21, placed vertically on the workbench 1, provides the main support frame, making the lifting assembly 3 run more smoothly in the vertical direction. The support rod 22 is inclined to form a triangular support structure, which enhances the resistance to lateral forces, reduces the shaking caused by the rotation and lifting of the mixing pile, and improves the construction accuracy.

[0041] Optionally, the support rod 22 can be a hydraulic lifting drive rod. The hydraulic lifting drive rod not only has a support function, but can also dynamically adjust the position and angle of the main pile frame 21, thereby enhancing the adaptability of the hydraulic lifting drive rod.

[0042] Combination Figure 1 and Figure 3 As shown, in some embodiments, the lifting assembly 3 includes a lifting frame 31 and a lifting drive component. The top end of the mixing component 41 passes through the base of the lifting frame 31 and partially extends out of the base. One of the signal transmitter 51 and the signal receiver 52 is fixedly disposed on the side wall of the lifting frame 31, and the other is disposed on the top side wall of the mixing component 41. The lifting drive component is disposed and connected to the support assembly 2. The output end of the lifting assembly 3 is connected to the lifting frame 31 to drive the lifting frame 31 to rise and fall in the vertical direction. Since the top end of the mixing component 41 passes through the base of the lifting frame 31 and partially extends out of the base, it can provide additional guiding effect, reduce the swaying of the mixing component 41 during rotation and lifting, and improve construction accuracy. The signal transmitter 51 and the signal receiver 52 are respectively disposed on the side wall of the lifting frame 31 and the top side wall of the mixing component 41. Since the mixing component 41 moves with rotation, the signal transmitter 51 can transmit signals without interference, improve the accuracy of the number of rotations and depth calculation of the mixing component 41, accurately determine the different silt layers entered by the mixing component 41, and realize intelligent control of cement slurry concentration.

[0043] To improve the efficiency of the rotary drive and ensure stable mixing, in some embodiments, the rotary drive component 42 includes an electric drive component and a reduction gearbox. The electric drive component is mounted on the lifting assembly 3, and the input end of the reduction gearbox is connected to the output end of the electric drive component. The output end of the reduction gearbox is connected to the mixing component 41 to drive the mixing component 41 to rotate. By using the combination of the electric drive component and the reduction gearbox, a stable torque output can be provided, avoiding the problem of uneven mixing speed caused by instantaneous load changes, and improving the pile formation quality. The reduction gearbox (not shown in the figure) can reduce the high-speed rotation speed of the electric drive component while increasing the output torque, ensuring that the mixing component 41 can stably mix in different silt layers.

[0044] During the construction of cement mixing piles, the mixing component 41 rotates at high speed and penetrates deep into the stratum, which can easily generate large reaction forces and vibrations. In order to improve the stability of the equipment, in some embodiments, a counterweight 6 is detachably installed on the workbench 1. The counterweight 6 can lower the center of gravity of the equipment, improve the overall stability, reduce vibration and displacement, and ensure construction accuracy. The counterweight 6 is detachable and can be freely added or removed according to the geological conditions of the construction site, adapting to the stability requirements of silt layers of different hardness. In soft strata (such as silt and sand), the counterweight can be added to prevent the equipment from shaking or sinking. In hard strata (such as rock and clay), the counterweight can be reduced to reduce the load on the equipment and improve construction efficiency.

[0045] To improve the mobility of the equipment, in some embodiments, the workbench 1 is equipped with wheels 8 at its bottom, and a driver's cab 7 is located on the side of the workbench 1 away from the support component 2. The driver's cab 7, lifting component 3, mixing component 4, and signal transmission component 5 are electrically connected. By setting up the wheels 8 and the driver's cab 7, it is possible to easily move the equipment over short distances or within the site, and the orientation of the workbench 1 can be flexibly adjusted, thereby improving construction efficiency. Through the electrical connection between the driver's cab 7 and the lifting component 3, mixing component 4, and signal transmission component 5, the operator can control the equipment through the driver's cab 7, improving construction accuracy and protecting the operator from the effects of inclement weather, thus improving work comfort and safety. The side of the driver's cab 7 away from the support component 2 ensures a wide field of vision for the operator, reduces blind spots, and improves operational safety.

[0046] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A cement mixing pile forming device for piling in a riverbed with multiple silt layers, characterized in that, Include: Workbench (1); Support assembly (2), which is provided on the workbench (1); Lifting assembly (3) can move in the vertical direction on the support assembly (2); Stirring assembly (4) includes stirring (41) and rotating drive (42), the stirring (41) is provided on the lifting assembly (3), and can be lifted along with the lifting assembly (3) in the vertical direction; the rotating drive (42) is provided on the lifting assembly (3), the output end of the rotating drive (42) is connected with the stirring (41), and the stirring (41) can be driven to rotate around its axis, and the cement slurry can be injected into the silt layer along the bottom of the stirring (41); Signal transmission assembly (5) includes signal transmitter (51) and signal receiver (52), either of the signal transmitter (51) and the signal receiver (52) is provided on the side wall of the stirring (41), and can rotate with the stirring (41), the other is fixedly provided on the lifting assembly (3), the signal transmitter (51) and the signal receiver (52) are opposite and can be connected in communication.

2. The cement mixing pile forming device according to claim 1, characterized in that, The stirring (41) includes drill pipe (411), drill bit (412) and a plurality of S-shaped stirring blades (413), the top end of the drill pipe (411) is connected with the lifting assembly (3), the bottom end of the drill pipe (411) is connected with the drill bit (412), a plurality of S-shaped stirring blades (413) are provided on the side wall of the lower end of the drill pipe (411) and above the drill bit (412), and a discharge port (414) is formed on each S-shaped stirring blade (413) for injecting the cement slurry.

3. The cement deep mixing pile forming device according to claim 2, characterized in that, A plurality of S-shaped stirring blades (413) are symmetrically arranged on both sides of the side wall of the drill pipe (411) and are arranged in the axial direction of the drill pipe (411).

4. The cement deep mixing pile forming device according to claim 3, characterized in that, A plurality of discharge ports (414) are provided on each S-shaped stirring blade (413), and the plurality of discharge ports (414) are circular.

5. The cement deep mixing pile forming device according to claim 4, wherein, The aperture of the discharge port (414) on each S-shaped stirring blade (413) gradually increases in the direction away from the drill pipe (411).

6. The cement mixing pile forming device according to claim 1, characterized in that, The support assembly (2) includes main pile frame (21) and support rod (22); the main pile frame (21) is vertically placed on one side of the workbench (1), the lifting assembly (3) is slidably connected with the main pile frame (21), and the support rod (22) is obliquely arranged between the main pile frame (21) and the workbench (1).

7. The cement mixing pile forming device according to claim 1, characterized in that, The lifting assembly (3) comprises a lifting frame (31) and a lifting driving element, the top end of the stirring element (41) is arranged in the base of the lifting frame (31) and partially extends out of the base, any one of the signal transmitter (51) and the signal receiver (52) is arranged on the side wall of the lifting frame (31), and the other is arranged on the side wall of the top end of the stirring element (41), the lifting driving element is arranged on the support assembly (2), and the output end of the lifting assembly (3) is connected with the lifting frame (31) to drive the lifting frame (31) to lift along the vertical direction.

8. The cement deep mixing pile forming device according to claim 1, wherein, The rotating driving element (42) comprises an electric driving element and a speed reducer, the electric driving element is arranged on the lifting assembly (3), the input end of the speed reducer is connected with the output end of the electric driving element, and the output end of the speed reducer is connected with the stirring element (41) to drive the stirring element (41) to rotate.

9. The cement mixing pile forming device according to any one of claims 1-8, characterized in that, The workbench (1) is detachably provided with a counterweight (6).

10. The cement mixing pile forming device according to any one of claims 1-8, characterized in that, The workbench (1) is provided with wheels (8) at the bottom, a cab (7) is arranged on the side of the workbench (1) away from the support assembly (2), and the cab (7), the lifting assembly (3), the stirring assembly (4) and the signal transmission assembly (5) are electrically connected.

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