Construction method and device of cement mixing pile based on intelligent monitoring

Abstract

The invention belongs to the technical field of cement mixing pile construction, and particularly relates to a cement mixing pile construction method and device based on intelligent monitoring, the cement mixing pile construction device comprises a suspension assembly, the suspension assembly comprises a tower, a steel wire rope used for suspending a mixing shaft is movably mounted on the tower, and the steel wire rope is connected with the suspension assembly; a winch for releasing or winding the steel wire rope is arranged on the side edge of the tower; the stirring assembly comprises a vibration head and a stirring shaft, the vibration head is suspended below the steel wire rope, and the stirring shaft is rotationally mounted at the bottom of the vibration head; the output end of the full-automatic pulping station is provided with a pipeline, and the pipeline is provided with a flow meter; the depth detection device is used for measuring the movement distance of the steel wire rope so as to measure the sinking depth of the stirring shaft; through the depth detection device, the flow meter, the inclinometer and other equipment, all construction links are accurately detected, the construction quality is ensured, the detection difficulty is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of cement mixing pile construction, and specifically relates to a construction method and device for cement mixing piles under intelligent monitoring. Background Technique

[0002] Cement mixing piles are a commonly used foundation treatment technology, widely used in the reinforcement of unstable soil layers such as soft soil, collapsible loess, and expansive soil. By mixing materials such as cement and fly ash with the soil, a pile body with higher bearing capacity is formed, thereby improving the physical and mechanical properties of the foundation and enhancing the bearing capacity and stability of the foundation. The construction of cement mixing piles usually uses special mixing pile equipment, such as mixing drills or mixers, to complete the mixing of cement and soil.

[0003] In engineering construction, the concealed works of pile foundations have always been the key points and difficulties in supervision. How to ensure the quality of concealed works has become the key and foundation of the overall project quality. There have long been problems in pile foundation construction such as difficult management, lagging quality inspection, and single detection methods. The management department cannot timely and accurately understand the construction situation, and there are problems such as large interference from human factors and poor controllability, resulting in various potential quality hazards in projects.

[0004] Therefore, the present invention provides a construction method and device for cement mixing piles under intelligent monitoring. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background technique.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: A construction device for cement mixing piles under intelligent monitoring according to the present invention includes:

[0007] A suspension assembly, the suspension assembly includes a tower, a steel wire rope for suspending a mixing shaft is movably installed on the tower, and a winch for releasing or winding the steel wire rope is provided on the side of the tower;

[0008] A mixing assembly, the mixing assembly includes a vibration head and a mixing shaft, the vibration head is suspended below the steel wire rope, the mixing shaft is rotatably installed at the bottom of the vibration head, and a driving structure for driving the mixing shaft to rotate is installed inside the vibration head;

[0009] A full-automatic pulp making station, a pipeline is provided at the output end of the full-automatic pulp making station, and a flow meter is installed on the pipeline;

[0010] A depth detection device, by measuring the movement distance of the steel wire rope through the depth detection device, the sinking depth of the mixing shaft is measured;

[0011] A distribution box, and a current sensor is installed on the distribution box.

[0012] Preferably, a GPS locator is fixed to the top of the vibration head.

[0013] Preferably, an inclinometer is installed on the tower.

[0014] Preferably, a recorder is further included, and the operating parameters of each component are recorded by the recorder.

[0015] Preferably, a limiting component is installed on the tower. The stirring shaft is kept vertical by the limiting component. The limiting component includes a U-shaped connecting frame. A supporting plate is rotatably installed at the open end of the connecting frame. A sliding hole matching the stirring shaft is formed in the middle of the supporting plate. The stirring shaft movably penetrates through the sliding hole. A hydraulic cylinder for driving the connecting frame to reciprocate is fixed on the tower.

[0016] Preferably, limiting guide rails are symmetrically fixed on the tower at positions on both sides of the connecting frame. Limiting blocks are respectively fixed on both sides of the connecting frame. The limiting blocks are slidably connected with the limiting guide rails.

[0017] Preferably, an oil storage barrel for storing lubricating oil is fixed to the top of the supporting plate. The stirring shaft movably penetrates through the central through hole of the oil storage barrel.

[0018] Preferably, a cleaning component is fixed to the bottom of the supporting plate. The cleaning component is sleeved on the stirring shaft in a circular ring shape.

[0019] A construction method for a cement mixing pile based on intelligent monitoring. This method uses the above-mentioned construction device for a cement mixing pile based on intelligent monitoring, and includes the following steps:

[0020] S1. Construction preparation: Level the construction site, remove all obstacles on the ground and underground at the pile position, and lay out the pile position;

[0021] S2. Positioning: Suspend the mixing component to the pile position of the soft soil foundation through the suspension component;

[0022] S3. Pre-stirring and sinking: Start the mixing component, and the stirring shaft rotates, cuts the soil, and sinks to the designed depth while rotating;

[0023] S4. Prepare cement slurry: While the mixing component is pre-stirring and sinking, prepare cement slurry and pour the cement slurry into the aggregate hopper of the full-automatic slurry making machine;

[0024] S5. Lifting and spraying and stirring: After the mixing component sinks to the designed depth, shift gears for the mixing component, reverse and lift it, and start the mortar pump to press the cement slurry into the soft soil foundation through the pipeline. Spray the slurry, stir, and lift at the same time to fully mix the cement slurry and the soft soil until reaching the ground;

[0025] S6. Multiple Stirring and Grout Spraying: After completing one grout spraying process, conduct secondary grout spraying or lower the mixing shaft three times for supplementary grout spraying;

[0026] S7. Cleaning: Inject clean water into the aggregate hopper, turn on the mortar pump, clean the residual slurry in all pipelines, and clean the mixing shaft;

[0027] S8. Shifting: Move the device to the next pile position, and repeat steps S2 to S7 to construct the next pile.

[0028] The beneficial effects of the present invention are as follows:

[0029] 1. For the construction method and device of a cement mixing pile based on intelligent monitoring according to the present invention, GPS locators are set to locate multiple devices, so as to reasonably arrange the simultaneous operation of multiple devices; through devices such as depth detection devices, flow meters, and inclinometers, each construction link is accurately detected to ensure the construction quality, reduce the detection difficulty, and improve the construction efficiency.

[0030] 2. For the construction method and device of a cement mixing pile based on intelligent monitoring according to the present invention, the signals of structures such as depth detection devices, flow meters, and inclinometers are transmitted to the data recorder through signal cables, and the recorder sends the collected data to the network computer through remote communication technology. The computer records and processes the various data in real time through software, and wirelessly controls the entire construction process between the front and back stages, enabling the management department to immediately and accurately understand the construction status, reducing the interference of human factors, and improving the controllability. Description of the Drawings

[0031] The present invention will be further described below with reference to the drawings.

[0032] Figure 1 is the three-dimensional view of the partial structure of the present invention;

[0033] Figure 2 is the front view of the present invention;

[0034] Figure 3 is the structural schematic diagram of the limit component of the present invention;

[0035] Figure 4 is Figure 2 the enlarged view at A in

[0036] Figure 5 is Figure 4 the enlarged view at B in

[0037] Figure 6 is the method flow chart of the present invention.

[0038] In the figure: 1, tower; 2, stirring shaft; 3, vibration head; 4, steel wire rope; 5, GPS locator; 6, winch; 7, depth detection device; 8, pipeline; 9, flowmeter; 10, current sensor; 11, recorder; 12, fully automatic pulp making station; 13, oil storage barrel; 14, support plate; 15, impurity removal part; 16, inclinometer; 17, connecting frame; 18, limit guide rail; 19, limit block; 20, hydraulic cylinder; 21, through hole. Specific embodiments

[0039] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0040] Embodiment 1: As Figures 1 to 5 shown, a construction device for cement mixing piles based on intelligent monitoring according to an embodiment of the present invention includes:

[0041] A suspension assembly, the suspension assembly includes a tower 1, a steel wire rope 4 for suspending the stirring shaft 2 is movably installed on the tower 1, and a winch 6 for releasing or winding the steel wire rope 4 is provided on the side of the tower 1;

[0042] A stirring assembly, the stirring assembly includes a vibration head 3 and a stirring shaft 2, the vibration head 3 is suspended below the steel wire rope 4, the stirring shaft 2 is rotatably installed at the bottom of the vibration head 3, and a driving structure for driving the stirring shaft 2 to rotate is installed inside the vibration head 3;

[0043] A fully automatic pulp making station 12, a pipeline 8 is provided at the output end of the fully automatic pulp making station 12, and a flowmeter 9 is installed on the pipeline 8 to monitor the flow rate of the cement slurry in the pipeline 8 and accurately control the amount of cement slurry used;

[0044] A depth detection device 7, the movement distance of the steel wire rope 4 is measured by the depth detection device 7 to measure the sinking depth of the stirring shaft 2;

[0045] A distribution box, a current sensor 10 is installed on the distribution box to provide power for the electrical equipment in the device, and the current in the circuit is monitored and measured through the current sensor 10, and the current signal is converted into an output signal that is easy to read and process;

[0046] During operation, first level the site, remove all obstacles above and below the ground at the pile position, lay out the pile position, and then suspend the mixing assembly to the pile position of the predetermined soft soil foundation through the hoist 6 and the steel wire rope 4. After that, start the mixing assembly, drive the mixing shaft 2 to rotate and vibrate up and down through the vibrating head 3. The mixing shaft 2 rotates, cuts the soil, and sinks to the design depth while rotating, enabling the mixing shaft 2 to quickly penetrate the soil layer and promoting the loosening and compaction of soil particles. While the mixing assembly is pre-stirring and sinking, prepare the cement slurry and pour the prepared cement slurry into the aggregate hopper of the full-automatic slurry making machine. After the mixing shaft 2 sinks to the design depth, shift the gear of the mixing assembly, use it in cooperation with the suspension assembly to achieve reverse lifting, and turn on the mortar pump to press the cement slurry into the soft soil foundation through the pipeline 8. Spray the slurry, stir, and lift at the same time to fully mix the cement slurry with the soft soil until the ground, and then a spraying operation is completed. After that, perform secondary spraying or lower the mixing shaft 2 three times for supplementary slurry spraying. The supplementary slurry volume for each section within the hole depth is automatically controlled by the computer, and it is ensured that after multiple sprayings are completed, the spraying volume for each section is equal and the cement slurry is just used up. After completing the construction of one pile, inject clean water into the aggregate hopper, turn on the mortar pump, clean the residual slurry in all pipelines 8, and clean the mixing shaft 2. A transport vehicle body (not shown in the figure) is provided at the bottom of the suspension assembly to move the device to the next pile position, and repeat steps S2 to S7 to construct the next pile;

[0047] In addition, during the construction process, the sinking depth of the mixing shaft 2 is measured by setting a depth detection device 7. The depth detection device 7 is composed of structures such as an encoder, a controller, and a sensor. The encoder usually uses the rotation encoding principle to convert the displacement of the steel wire rope 4 into the rotation angle or step number of the encoder. By measuring the rotation increment, the encoder can calculate the stretching distance of the steel wire rope 4. The sensor is used to detect the displacement of the steel wire rope 4, and a linear sensor can be used to monitor the horizontal displacement of the steel wire rope 4. The controller converts the displacement data into an electrical signal and sends it to the control system or display device to display the sinking depth of the mixing shaft 2.

[0048] Preferably, a GPS locator 5 is fixed to the top of the vibrating head 3; during operation, the device is positioned by setting the GPS locator 5 to reasonably arrange the simultaneous operation of multiple devices.

[0049] Preferably, an inclinometer 16 is installed on the tower 1; during operation, the inclination of the mixing shaft 2 is measured by the inclinometer 16 to keep the mixing shaft 2 in a vertical state during operation and avoid skewing during operation.

[0050] Preferably, a recorder 11 is also included, through which the operating parameters of each component are recorded; when working, the signals of the depth detection device 7, the flow meter 9, the inclinometer 16 and other structures are input to the data recorder 11 through the signal cable, and the recorder 11 sends the collected data to the network computer through the remote communication technology, or copies it to the computer through the mobile storage device, and the computer records and images the various data in real time through the software.

[0051] Preferably, a limit assembly is installed on the tower frame 1, and the limit assembly is used to keep the stirring shaft 2 in a vertical state. The limit assembly includes a U-shaped connecting frame 17, and a support plate 14 is rotatably installed on the open end of the connecting frame 17. A sliding hole matching the stirring shaft 2 is opened in the middle of the support plate 14, and the stirring shaft 2 movably passes through the sliding hole. A hydraulic cylinder 20 is fixed on the tower frame 1 to drive the connecting frame 17 to reciprocate. During operation, the hydraulic cylinder 20 drives the connecting frame 17 to reciprocate laterally, thereby driving the support plate 14 to move, and at the same time, in conjunction with the inclinometer 16, the inclination angle of the stirring shaft 2 can be adjusted so that the stirring shaft 2 remains perpendicular to the ground. In addition, the limit assembly can limit the lateral shaking of the stirring shaft 2, so that the stirring shaft 2 can be quickly adjusted to a vertical position, thereby improving the adjustment efficiency. In addition, a torsion spring is provided at the connection position between the connecting frame 17 and the support plate 14 to limit the movement range of the support plate.

[0052] Preferably, a limiting guide rail 18 is symmetrically fixed on the tower 1 and located on both sides of the connecting frame 17, and a limiting block 19 is respectively fixed on both sides of the connecting frame 17, and the limiting block 19 is slidably connected to the limiting guide rail 18; when working, the limiting block 19 and the limiting guide rail 18 cooperate to limit the movement direction of the connecting frame 17, so that the connecting frame 17 can move stably in the horizontal direction.

[0053] Preferably, an oil storage barrel 13 for storing lubricating oil is fixed on the top of the support plate 14, and the stirring shaft 2 is movable through the central through hole 21 of the oil storage barrel 13; during operation, by adding lubricating oil to the inside of the oil storage barrel 13, when the vibration head 3 drives the stirring shaft 2 to move, the lubricating oil can enter the gap between the support plate 14 and the stirring shaft 2, play a lubricating role, and reduce the wear between the two.

[0054] Embodiment 2: Figure 4 As shown, compared with Example 1, another implementation of the present invention is: a debris removal piece 15 is fixed at the bottom of the support plate 14, and the debris removal piece 15 is arranged on the stirring shaft 2 in a circular ring shape; during operation, when the stirring shaft 2 moves up and down, the debris removal piece 15 moves up and down along the stirring shaft 2 to scrape off impurities attached to the surface of the stirring shaft 2.

[0055] like Figure 6As shown in the figure, a construction method for cement mixing piles under intelligent monitoring. This method uses the above-mentioned construction device for cement mixing piles under intelligent monitoring, and includes the following steps:

[0056] S1. Construction preparation: Level the construction site, remove all obstacles above and below the ground at the pile position, and lay out the pile positions;

[0057] S2. Positioning: Suspend the mixing component to the pile position of the soft soil foundation through the suspension component;

[0058] S3. Pre-stirring and sinking: Start the mixing component, and the mixing shaft 2 rotates, cuts the soil, and sinks to the design depth while rotating;

[0059] S4. Prepare cement slurry: While the mixing component is pre-stirring and sinking, prepare the cement slurry and pour the cement slurry into the aggregate hopper of the fully automatic slurry making machine;

[0060] S5. Lifting and spraying and stirring: After the mixing component sinks to the design depth, shift the mixing component, reverse and lift it, and turn on the mortar pump to press the cement slurry into the soft soil foundation through the pipeline 8. Spray the slurry, stir, and lift at the same time to fully mix the cement slurry and the soft soil until the ground surface;

[0061] S6. Multiple stirring and spraying: After completing one spraying process, perform secondary spraying or three times of sinking and stirring the mixing shaft 2 for supplementary slurry spraying;

[0062] S7. Cleaning: Inject clean water into the aggregate hopper, turn on the mortar pump, clean the residual slurry in all pipelines 8, and clean the mixing shaft 2;

[0063] S8. Shifting: Move the device to the next pile position, and repeat steps S2 to S7 to construct the next pile.

[0064] Working principle: First, level the site, remove all obstacles above and below the ground at the pile position, lay out the pile positions, and then suspend the mixing assembly to the pile positions of the predetermined soft soil foundation through the winch 6 and the steel wire rope 4. After that, start the mixing assembly, drive the mixing shaft 2 to rotate and vibrate up and down through the vibration head 3. The mixing shaft 2 rotates, cuts the soil, and sinks to the designed depth while rotating, enabling the mixing shaft 2 to quickly penetrate the soil layer and promoting the loosening and compaction of soil particles. While the mixing assembly is pre-stirring and sinking, prepare the cement slurry, pour the prepared cement slurry into the aggregate hopper of the fully automatic slurry making machine. After the mixing shaft 2 sinks to the designed depth, shift gears for the mixing assembly, use it in cooperation with the suspension assembly to achieve reverse lifting, and turn on the mortar pump to press the cement slurry into the soft soil foundation through the pipeline 8, spraying the slurry, stirring, and lifting at the same time, so that the cement slurry and the soft soil are fully mixed until the ground surface, and one spraying operation can be completed. Then, perform secondary spraying or sink the mixing shaft 2 three times for supplementary slurry spraying. The supplementary slurry volume for each section within the hole depth is automatically controlled by the computer, and it is ensured that after multiple sprayings are completed, the spraying volume for each section is equal and the cement slurry is just used up. After completing the construction of one pile, inject clean water into the aggregate hopper, turn on the mortar pump, clean the residual slurry in all pipelines 8, and clean the mixing shaft 2. A transport vehicle body (not shown in the figure) is provided at the bottom of the suspension assembly to move the device to the next pile position, and repeat step S2 to step S7 to construct the next pile;

[0065] In addition, during the construction process, a depth detection device 7 is set to measure the sinking depth of the mixing shaft 2. The depth detection device 7 is composed of structures such as an encoder, a controller, and a sensor. The encoder usually uses the rotation encoding principle to convert the displacement of the steel wire rope 4 into the rotation angle or step number of the encoder. By measuring the rotation increment, the encoder can calculate the stretching distance of the steel wire rope 4. The sensor is used to detect the displacement of the steel wire rope 4, and a linear sensor can be used to monitor the horizontal displacement of the steel wire rope 4. The controller converts the displacement data into an electrical signal and sends it to the control system or display device to display the sinking depth of the mixing shaft 2.

[0066] The above front, back, left, right, up, and down are all based on Figure 1 the description in the accompanying drawings of the specification. Taking the perspective of the observer as the standard, the side of the device facing the observer is defined as the front, and the left side of the observer is defined as the left, and so on.

[0067] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention.

[0068] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A construction device for cement mixing piles under intelligent monitoring, characterized in that: Including: A suspension assembly, the suspension assembly includes a tower (1), a steel wire rope (4) for suspending a mixing shaft (2) is movably installed on the tower (1), and a winch (6) for releasing or winding the steel wire rope (4) is arranged on the side of the tower (1); A mixing assembly, the mixing assembly includes a vibration head (3) and a mixing shaft (2), the vibration head (3) is suspended below the steel wire rope (4), the mixing shaft (2) is rotatably installed at the bottom of the vibration head (3), and a driving structure for driving the mixing shaft (2) to rotate is installed inside the vibration head (3); A full-automatic pulp making station (12), a pipeline (8) is arranged at the output end of the full-automatic pulp making station (12), and a flow meter (9) is installed on the pipeline (8); A depth detection device (7), the movement distance of the steel wire rope (4) is measured by the depth detection device (7) to measure the sinking depth of the mixing shaft (2); A distribution box, and a current sensor (10) is installed on the distribution box.

2. The construction device for cement mixing piles based on intelligent monitoring according to claim 1, characterized in that: A GPS locator (5) is fixed at the top of the vibration head (3).

3. The construction device of a cement mixing pile based on intelligent monitoring according to claim 2, characterized in that: An inclinometer (16) is installed on the tower (1).

4. The construction device of a cement mixing pile based on intelligent monitoring according to claim 3, characterized in that: It further includes a recorder (11), and the operation parameters of each component are recorded by the recorder (11).

5. The construction device of a cement mixing pile based on intelligent monitoring according to claim 4, characterized in that: A limiting assembly is installed on the tower (1), and the mixing shaft (2) is kept vertical by the limiting assembly. The limiting assembly includes a U-shaped connecting frame (17), a support plate (14) is rotatably installed at the open end of the connecting frame (17), a sliding hole matching the mixing shaft (2) is opened in the middle of the support plate (14), the mixing shaft (2) movably penetrates through the sliding hole, and a hydraulic cylinder (20) for driving the connecting frame (17) to reciprocate is fixed on the tower (1).

6. The construction device of a cement mixing pile based on intelligent monitoring according to claim 5, characterized in that: Limiting guide rails (18) are symmetrically fixed on the tower (1) and at positions on both sides of the connecting frame (17), limiting blocks (19) are respectively fixed on both sides of the connecting frame (17), and the limiting blocks (19) are slidably connected with the limiting guide rails (18).

7. The construction device of a cement mixing pile based on intelligent monitoring according to claim 6, characterized in that: An oil storage barrel (13) for storing lubricating oil is fixed at the top of the support plate (14), and the mixing shaft (2) movably penetrates through the central through hole (21) of the oil storage barrel (13).

8. The construction device of a cement mixing pile based on intelligent monitoring according to claim 7, characterized in that: A cleaning part (15) is fixed at the bottom of the support plate (14), and the cleaning part (15) is sleeved on the mixing shaft (2) in a circular ring shape.

9. A construction method of cement mixing piles based on intelligent monitoring, which uses the construction device of cement mixing piles based on intelligent monitoring described in claim 8, and is characterized in that: Including the following steps: S1. Construction preparation: Level the construction site, remove all obstacles above and below the ground at the pile position, and lay out the pile position; S2. Positioning: Suspend the mixing assembly to the pile position of the soft soil foundation through the suspension assembly; S3. Pre-stirring and sinking: Start the mixing assembly, and the mixing shaft (2) rotates, cuts the soil and sinks to the designed depth while rotating; S4. Prepare cement slurry: While the mixing assembly is pre-stirring and sinking, prepare cement slurry and pour the cement slurry into the aggregate hopper of the full-automatic pulp making machine; S5. Lift, spray and stir: After the mixing assembly sinks to the designed depth, shift gears the mixing assembly, reverse and lift it, and turn on the mortar pump to press the cement slurry into the soft soil foundation through the pipeline (8), spray, stir and lift at the same time, so that the cement slurry and the soft soil are fully mixed until the ground surface; S6. Multiple stirring and spraying: After completing one spraying process, conduct secondary spraying or lower the stirring shaft (2) three times for supplementary slurry spraying; S7. Cleaning: Inject clean water into the aggregate hopper, start the mortar pump, clean the residual slurry in all pipelines (8), and clean the stirring shaft (2); S8. Shifting: Move the device to the next pile position, and repeat steps S2 to S7 to construct the next pile.

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