A composite pile driving device based on electromagnetic vibration static pressure pile driver

Abstract

This invention relates to the field of static pressure pile driving technology and discloses a composite pile driving device based on electromagnetic vibration static pressure pile driving. The device includes a base frame with a seat plate fixedly connected to its top surface, four support rods with a top frame fixedly connected to their top ends, and a pile driving mechanism located on the rear side of the seat plate fixedly connected to the top end of the top frame. The pile driving mechanism includes a hydraulic rod with a pressure-distributing end shell fixedly connected to its top end. An inlet port is fixedly connected to the rear end of the pressure-distributing end shell, and a connecting groove is fixedly connected to the rear side of the inner wall of the pressure-distributing end shell. Pressure relief cylinders are fixedly connected to the left and right ends of the connecting groove, and a drain pipe is fixedly connected to the outer surface of each pressure relief cylinder. This invention, through a hydraulic diversion structure, can accurately distribute the pressure output by the hydraulic system to the pile fixing and pressure application functional modules, ensuring that both work synchronously and in coordination. This avoids pile displacement or loosening caused by timing errors in traditional step-by-step operations.

Description

Technical Field

[0001] This invention relates to the field of static pressure pile driver technology, specifically to a composite pile driving device for static pressure pile drivers based on electromagnetic vibration. Background Technology

[0002] In traditional pile foundation construction, static pressure pile drivers typically use a hydraulic system to directly apply pressure, pressing precast piles vertically into the foundation. However, this single pressure method is prone to problems such as difficulty in pile penetration, large verticality deviation, or excessive equipment load in dense soil layers or complex geological conditions, leading to reduced construction efficiency and even damage to the pile body. In addition, traditional processes usually require external lifting equipment to hoist the pile body from a horizontal state to a vertical state, which not only increases the complexity of mechanical coordination but also makes it easy for the pile body to tilt or collide due to hoisting errors, affecting construction accuracy and safety.

[0003] Patent CN101487749A discloses a static pressure pile driving resistance measuring device and method in the field of building surveying technology. The device includes a sensor, a recorder, and a protective sleeve. One end of the protective sleeve is fixedly connected to the pile driver jack, the sensor is fitted inside the protective sleeve and connected to the pile driver jack, and the other end of the protective sleeve is connected to the pile cap via a movable bolt. The sensor is connected to the recorder via a cable. This patent accurately measures and records the changes in pile driving resistance during the static pressure pile driving process in real time. Furthermore, the accumulation and summarization of pile driving resistance data allows for the preliminary evaluation of the site's pile driving feasibility and estimation of the required counterweight for the static pressure pile, avoiding waste due to excessive counterweight and insufficient pile driver reaction force due to insufficient counterweight. However, this patent suffers from the problem of pile body displacement or loosening caused by timing errors in traditional step-by-step operations. Therefore, a static pressure pile driving device based on electromagnetic vibration is proposed to solve the aforementioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a composite pile driving device for static pressure pile driving based on electromagnetic excitation, which addresses the shortcomings of the prior art.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a composite pile driving device for static pressure pile driving based on electromagnetic excitation, including a base frame, a seat plate fixedly connected to the top surface of the base frame, a top frame fixedly connected to the top ends of the four support rods, and a pile driving mechanism provided on the rear side of the top end of the top frame.

[0006] The pile driving mechanism includes a hydraulic rod, with a pressure-dividing end shell fixedly connected to the top of the hydraulic rod. An inlet port is fixedly connected to the rear end of the pressure-dividing end shell. A connecting groove is fixedly connected to the rear side of the inner wall of the pressure-dividing end shell. Pressure relief cylinders are fixedly connected to the left and right ends of the connecting groove. A drain pipe is fixedly connected to the outer surface of each pressure relief cylinder. A pressure relief guide rod is fixedly connected to the center of the inner side of the drain pipe. A pressure relief valve is slidably connected to the outer side of the pressure relief guide rod. An inlet port is fixedly connected to the outer side of the top of the hydraulic rod. Two branch thin pipes are fixedly connected to the bottom surface of each pressure relief cylinder.

[0007] Four support rods are fixedly connected to the top of the base plate. A fastening mechanism is provided below the top frame, and a hoisting and fixing mechanism is provided below the fastening mechanism. Pile bolt holes are provided at the four corners of the upper surface of the base frame.

[0008] According to the above technical solution, the pressure relief valve plate is slidably connected to the pressure relief guide rod. A return spring is provided on the outer side of the pressure relief guide rod, and the two ends of the return spring are fixedly connected to the pressure relief cylinder and the pressure relief valve plate, respectively. The pressure-distributing end shell is connected to the inside of the inlet port. The inlet port is located inside the pressure-distributing end shell. The branch tube extends downward from the inside of the pressure-distributing end shell to the bottom surface. The bottom end of the hydraulic rod is fixedly connected to the base plate. When working, the external hydraulic pump is connected to the inlet port on the side of the pressure-distributing end shell through a pipeline. When the hydraulic pump is in the liquid delivery state, it delivers liquid into the inlet port. The liquid enters the connecting groove end through the inlet port, then enters the pressure relief cylinder through the connecting groove end, and then directly enters the branch tube from the pressure relief cylinder, causing the fixed pile to loosen. When the branch tube is full of liquid, the continuous input of liquid from the inlet port will squeeze and relieve pressure. The valve plate slides along the pressure relief guide rod and pulls the return spring. The liquid in the pressure relief cylinder is discharged through the drain pipe and flows from around the pressure relief valve plate into the pressure dividing end housing. As the liquid in the pressure dividing end housing increases, it enters the hydraulic rod through the inlet port. At this time, the hydraulic rod extends and drives the fastening mechanism to move upward. When the external hydraulic pump is connected to the pressure dividing end housing through the pipeline and draws liquid from the inlet port, the return spring pulls the pressure relief valve plate back to its original position along the pressure relief guide rod after the liquid in the pressure relief cylinder is drawn out. It also draws away the liquid in the branch thin pipe connected to the pressure relief cylinder. At this time, the fastening mechanism first fixes the pile body. As the extraction time continues, the pressure inside the pressure relief cylinder changes from positive pressure to negative pressure. The negative pressure sucks the pressure relief valve plate to slide along the pressure relief guide rod and squeezes the return spring, allowing the liquid in the hydraulic rod to be drawn into the pressure dividing end housing through the inlet port. Then, the pressure dividing end housing draws the liquid out through the drain pipe to the connecting groove end.

[0009] According to the above technical solution, the fastening mechanism includes a shrinking liquid cylinder, an upper closing frame is slidably connected to the outside of the support rod, two lower closing frames are provided below the upper closing frame, a frame rod seat is fixedly connected to the side of both the upper and lower closing frames, a flipping frame is fixedly connected to the side of each lower closing frame, a pressing block is rotatably connected to the end of the flipping frame, a pressing groove is provided on the side of the pressing block, a pressure-applying folding plate is provided above the pressing block, two shrinking liquid cylinders are fixedly connected to the left and right sides of the upper closing frame, an electromagnetic vibrator is provided between the two shrinking liquid cylinders, a hinged push rod is hinged to the end of each frame rod seat, and a fitting arc plate is hinged to the end of the hinged push rod away from the frame rod seat.

[0010] According to the above technical solution, the four inner corners of the upper frame are fixedly connected to the support rod seats, the side of each lower frame is fixedly connected to two support rod seats, the pressure-applying folding plate is fixedly connected to the upper frame, and the upper frame is fixedly connected to the side hydraulic rod.

[0011] According to the above technical solution, the electromagnetic vibrator is fixedly connected to the upper frame, and the bottom end of the contraction cylinder is fixedly connected to the lower frame. The bottom surface of the contraction cylinder is connected to the end of the branch tube away from the pressure-distributing end shell. When the branch tube connected to the contraction cylinder is in the pumping state, the contraction cylinder begins to contract and pulls the upper and lower frames closer to each other. At this time, the frame rod seats connected to the upper and lower frames push the hinge push rod closer to the pile body and fit against the outside of the pile body to surround it. At this time, the pile body is inserted into the pre-dug pile foundation trench. By putting the electromagnetic vibrator into working state, the electromagnetic vibrator generates... The upper and lower frames generate high-frequency vibrations, which are transmitted to the connected frame bases. The vibrations are then transmitted to the contacting pile body via the hinged push rod and the fitting arc plate. Under the action of high-frequency vibration and its own weight, the pile body settles and slowly inserts into the pre-dug pile foundation trench. In addition, when the upper and lower frames get closer, the upper frame presses the top of the contact block with the connected pressure plate, causing the contact block to flip and fit tightly against the surface of the pile body. The contact arc plate then applies downward pressure to the surface of the pile body. The settled pile body is then moved down together with the upper and lower frames by the retraction of the hydraulic rod, which applies pressure to the pile body.

[0012] According to the above technical solution, the hoisting and fixing mechanism includes a guide wheel, a cable is provided on the outer side of the guide wheel, a pile-turning end is rotatably connected to the inner side of the base plate, a pile insertion groove is opened on the top surface of the pile-turning end, a bolt rod is fixedly connected to the top of the pile-turning end, an arc locking block is fixedly connected to the rear side of the pile-turning end, a locking groove arc plate is fixedly connected to the rear side of the arc locking block, an insertion block is slidably connected to the outer side of the arc locking block, an elastic groove block is slidably connected to the inner side of the insertion block, a push groove hinge block is hinged to the middle of the rear edge of the elastic groove block, a pull rod is fixedly connected to the rear end of the push groove hinge block, and a handle is fixedly connected to the rear end of the pull rod.

[0013] According to the above technical solution, the top frame is rotatably connected to the guide wheel, one end of the cable is fixedly connected to the upper frame, and the other end of the cable is fixedly connected to the bolt rod. A spring is fixedly connected to the rear side of the elastic groove block, and both ends of the spring are fixedly connected to the elastic groove block and the insert block, respectively. The pull rod is slidably connected to the base plate, and the insert block is fixedly connected to the base plate. During installation, the base frame needs to be reinforced by installing bolts buried in the ground through the pile bolt holes. When installing the pile body, the hydraulic rod is first in the extended state. At this time, the upper and lower frames are at the highest point of the support rod. The pull rod is driven by pulling the handle horizontally, causing the pull rod to be pulled through the push-groove hinge block. The elastic groove block disengages from the slot on the side of the locking arc plate and compresses the elastic spring. At this point, the pile tip is no longer locked and deflects 90 degrees around the connection point of the seat frame plate. The pile body, in conjunction with the crane, is inserted into the pile insertion slot on the inner side of the pile tip in a flat manner. Then, the hydraulic rod retracts, driving the upper and lower closing frames to move downwards. The upper closing frame pulls the cable, and the cable pulls the bolt on the pile tip around the guide wheel, causing the pile tip to flip and stand upright around the seat frame plate, thus flipping the pile body. In conjunction with the crane, the pile body is erected and inserted into the insertion block through the arc locking block connected to the pile tip. The insertion block is then inserted into the locking arc plate. Finally, the elastic spring returns to its original position, pushing the elastic groove block into the slot on the side of the locking arc plate and locking it in place.

[0014] The present invention, by adopting the above technical solution, can bring the following beneficial effects:

[0015] This electromagnetically excited static pressure pile driver composite pile driving device features a hydraulic diversion structure that precisely distributes the pressure output from the hydraulic system to the two functional modules of pile fixing and pressure application, ensuring that both work synchronously and in coordination. This avoids pile displacement or loosening caused by timing errors in traditional step-by-step operations, while also improving construction efficiency. The integrated design reduces the complexity of the mechanical structure and lowers the equipment failure rate. Synchronous operation reduces process switching time, making it particularly suitable for soft soil foundations or engineering scenarios with high precision requirements. It enables continuous and stable pile driving operations, shortens the construction period, and reduces labor costs.

[0016] This electromagnetically excited static pressure pile driver composite pile driving device uses a high-frequency, low-amplitude electromagnetic vibration structure to act on the pile surface in the initial stage. This effectively breaks the static friction resistance between the pile and the surrounding soil layers, and promotes the initial sinking of the pile under its own weight. This significantly reduces the starting force required for the subsequent hydraulic pressure stage, making it particularly suitable for dense sand or clay soil. It can reduce the "pile rejection" phenomenon that may occur when traditional static pressure pile drivers apply pressure directly. In addition, the vibration can locally liquefy the soil around the pile, temporarily reducing the resistance at the pile end. Combined with the guiding effect of the pre-excavated pile foundation trench, after switching to the hydraulic pressure stage, since the pile-soil contact state has been optimized by the previous vibration, the hydraulic system only needs to apply a stable and continuous pressure to complete the final pressure, thereby reducing the peak load of the equipment and avoiding the problem of stress concentration in the pile body caused by sudden pressure. Through phased construction, the vibration parameters (frequency / amplitude) and hydraulic pressure can be dynamically matched to achieve adaptive control of different geological layers.

[0017] This electromagnetically excited static pressure pile driver composite pile driving device can lift the pile from a horizontal state to a vertical state, which can significantly improve construction efficiency and enhance operational safety. Specifically, the hydraulic lifting mechanism can achieve stable lifting and precise centering of the pile through synchronous control of multiple oil cylinders, avoiding the pile collision or personnel safety hazards caused by swinging during traditional crane lifting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall rear-view three-dimensional structure of the present invention;

[0020] Figure 3 This is a schematic diagram showing the structural distribution of the mechanism in this invention;

[0021] Figure 4 This is a schematic diagram of the pile driving mechanism of the present invention;

[0022] Figure 5 For the present invention Figure 4 A magnified structural diagram of A in the middle;

[0023] Figure 6 This is a schematic diagram of the fastening mechanism of the present invention;

[0024] Figure 7 This is a schematic diagram of the hoisting and fixing mechanism of the present invention;

[0025] Figure 8 For the present invention Figure 7 A magnified structural diagram of B in the diagram;

[0026] Figure 9 For the present invention Figure 7A magnified structural diagram of C.

[0027] In the diagram: 1. Base frame; 2. Seat plate; 3. Support rod; 4. Top frame; 5. Pile driving mechanism; 51. Hydraulic rod; 52. Pressure dividing end shell; 53. Inlet port; 54. Flow port; 55. Connecting groove end; 56. Pressure relief cylinder; 57. Drain pipe; 58. Pressure relief guide rod; 59. Pressure relief valve plate; 510. Branch capillary tube; 6. Fastening mechanism; 61. Contraction cylinder; 62. Electromagnetic vibrator; 63. Upper closing frame; 64. Lower closing frame; 65. 66. Tilting frame; 67. Pressing block; 68. Frame pole seat; 69. Hinge push rod; 60. Adhering arc plate; 610. Contact groove; 611. Pressure folding plate; 7. Lifting and fixing mechanism; 71. Guide wheel; 72. Cable; 73. Pile turning end; 74. Pile insertion groove; 75. Arc locking block; 76. Locking groove arc plate; 77. Bolt rod; 78. Elastic groove block; 79. Insertion block; 710. Push groove hinge block; 711. Pull rod; 712. Handle; 8. Pile fixing bolt hole. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-9 An embodiment of the present invention is as follows: a composite pile driving device for static pressure pile driving based on electromagnetic excitation, including a base frame 1, a seat plate 2 fixedly connected to the top surface of the base frame 1, a top frame 4 fixedly connected to the top ends of four support rods 3, and a pile driving mechanism 5 provided on the rear side of the top end of the top frame 4.

[0030] The pile driving mechanism 5 includes a hydraulic rod 51. A pressure-dividing end shell 52 is fixedly connected to the top of the hydraulic rod 51. An inlet port 53 is fixedly connected to the rear end of the pressure-dividing end shell 52. A connecting groove end 55 is fixedly connected to the rear side of the inner wall of the pressure-dividing end shell 52. Pressure relief cylinders 56 are fixedly connected to the left and right ends of the connecting groove end 55. A drain pipe 57 is fixedly connected to the outer surface of each pressure relief cylinder 56. A pressure relief guide rod 58 is fixedly connected to the center of the inner side of the drain pipe 57. A pressure relief valve plate 59 is slidably connected to the outer side of the pressure relief guide rod 58. An inlet port 54 is fixedly connected to the outer side of the top of the hydraulic rod 51. Two branch thin pipes 510 are fixedly connected to the bottom surface of each pressure relief cylinder 56.

[0031] Four support rods 3 are fixedly connected to the top of the base plate 2. A fastening mechanism 6 is provided below the top frame 4, and a hoisting and fixing mechanism 7 is provided below the fastening mechanism 6. Fixed bolt holes 8 are provided at the four corners of the upper surface of the base frame 1. The pressure relief valve plate 59 is slidably connected to the pressure relief guide rod 58. A return spring is provided on the outside of the pressure relief guide rod 58, and the two ends of the return spring are fixedly connected to the pressure relief cylinder 56 and the pressure relief valve plate 59, respectively. The pressure dividing end shell 52 is connected to the inside of the inlet port 53. The inlet port 54 is located inside the pressure dividing end shell 52. The branch tube 510 extends downward from the inside of the pressure dividing end shell 52 to the bottom surface. The bottom end of the hydraulic rod 51 is fixedly connected to the base plate 2. When the work starts, the external liquid... The hydraulic pump is connected to the inlet port 53 on the side of the pressure-dividing end housing 52 via a pipeline. When the hydraulic pump is in the pumping state, it delivers liquid into the inlet port 53. The liquid enters the connecting groove end 55 through the inlet port 53, and then enters the pressure relief cylinder 56 through the connecting groove end 55. From the pressure relief cylinder 56, it directly enters the branch capillary tube 510, loosening the fixed pile. When the branch capillary tube 510 is full of liquid, the continuous input of liquid from the inlet port 53 will squeeze the pressure relief valve plate 59 to slide along the pressure relief guide rod 58 and pull the return spring. The liquid in the pressure relief cylinder 56 will be discharged through the drain pipe 57 and flow from around the pressure relief valve plate 59 into the pressure-dividing end housing 52. As the liquid increases within the pressure-dividing end shell 52, it enters the hydraulic rod 51 through the inlet port 54. At this time, the hydraulic rod 51 extends, causing the fastening mechanism 6 to move upwards. When the external hydraulic pump, connected to the pressure-dividing end shell 52 via a pipe, draws liquid from the inlet port 53, the liquid in the pressure relief cylinder 56 is drawn out. The return spring then pulls the pressure relief valve 59 back to its original position along the pressure relief guide rod 58, drawing away the liquid from the branch pipe 510 connected to the pressure relief cylinder 56. At this point, the fastening mechanism 6 fixes the pile body in place. As the extraction continues, the pressure inside the pressure relief cylinder 56 changes from positive to negative. This negative pressure attracts the pressure relief valve 59, causing it to slide along the pressure relief guide rod 58 and compress the return spring, thus allowing... The liquid inside the hydraulic rod 51 is drawn into the pressure-dividing end shell 52 through the inlet port 54, and then the pressure-dividing end shell 52 draws the liquid out through the outlet pipe 57 to the connecting groove end 55. The hydraulic diversion structure can accurately distribute the pressure output by the hydraulic system to the two functional modules of pile fixing and pressurization, ensuring that the two work synchronously and in coordination. This avoids pile body displacement or loosening caused by timing errors in traditional step-by-step operations, and improves construction efficiency. The integrated design reduces the complexity of the mechanical structure and the equipment failure rate. Synchronous operation reduces the process switching time, which is especially suitable for soft soil foundations or engineering scenarios with high precision requirements. It can realize continuous and stable pile driving operations, shorten the construction period and reduce labor costs.

[0032] The fastening mechanism 6 includes a contraction cylinder 61. An upper clamping frame 63 is slidably connected to the outside of the support rod 3. Two lower clamping frames 64 are provided below the upper clamping frame 63. Frame rod seats 67 are fixedly connected to the sides of both the upper clamping frame 63 and the lower clamping frame 64. A flipping frame 65 is fixedly connected to the side of each lower clamping frame 64. A pressing block 66 is rotatably connected to the end of the flipping frame 65. A pressing groove 610 is provided on the side of the pressing block 66. A pressure-applying folding plate 611 is provided above the pressing block 66. Two contraction cylinders 61 are fixedly connected to the left and right sides of the upper clamping frame 63. An electromagnetic vibrator 62 is provided between the two contraction cylinders 61. A hinge push rod 68 is hinged to the end of each frame rod seat 67. A fitting arc plate is hinged to the end of the hinge push rod 68 away from the frame rod seat 67. 69. The four inner corners of the upper frame 63 are fixedly connected to the support rod 67. The sides of each lower frame 64 are fixedly connected to two support rods 67. The pressure-applying folding plate 611 is fixedly connected to the upper frame 63. The upper frame 63 is fixedly connected to the side hydraulic rod 51. The electromagnetic vibrator 62 is fixedly connected to the upper frame 63. The bottom end of the contraction cylinder 61 is fixedly connected to the lower frame 64. The bottom surface of the contraction cylinder 61 is connected to the end of the branch capillary tube 510 away from the pressure dividing end shell 52. When the branch capillary tube 510 connected to the contraction cylinder 61 is in the pumping state, the contraction cylinder 61 begins to contract and pulls the upper frame 63 and the lower frame 64 closer to each other. At this time, the support rods 67 connected to the upper frame 63 and the lower frame 64 push the hinge push rod 68 closer to the pile body and out of the pile body. The pile is then surrounded by a side-mounted frame, and inserted into the pre-dug pile foundation trench. The electromagnetic vibrator 62 is activated, generating high-frequency vibrations. These vibrations are transmitted from the upper frame 63 to the connected support rod 67, and then to the contacting pile via the contacting arc plate 69 connected to the hinge push rod 68. This allows the pile to settle slowly into the pre-dug pile foundation trench under the influence of high-frequency vibration and its own weight. Furthermore, as the upper frame 63 and lower frame 64 approach each other, the upper frame 63 presses the top of the contact block 66 against the connected pressure plate 611, causing the contact block 66 to flip and press tightly against the pile surface. The contact arc plate 69 then applies downward pressure to the pile surface, causing the settled pile to retract via the hydraulic rod 51. The upper and lower frames 63 and 64 move downwards together to apply pressure to the pile. In the initial stage, the electromagnetic vibration structure acts on the pile surface through high-frequency micro-amplitude vibration, which can effectively break the static friction resistance between the pile and the surrounding soil layers. Under its own weight, the pile initially sinks, significantly reducing the starting force required for the subsequent hydraulic pressure stage. This is especially suitable for dense sand or clay soil, reducing the "pile rejection" phenomenon that may occur when traditional static pressure pile drivers apply pressure directly. In addition, the vibration can locally liquefy the soil around the pile, temporarily reducing the pile end resistance. Combined with the guiding effect of the pre-excavated pile foundation trench, after switching to the hydraulic pressure stage, since the pile-soil contact state has been optimized by the previous vibration, the hydraulic system only needs to apply a stable and continuous pressure to complete the final pressure, thereby reducing the peak load of the equipment.This method avoids stress concentration in the pile body caused by sudden pressure application. Through phased construction, the dynamic matching of vibration parameters (frequency / amplitude) with hydraulic pressure allows for adaptive control across different geological layers.

[0033] The hoisting and fixing mechanism 7 includes a guide wheel 71, a cable 72 on the outer side of the guide wheel 71, a pile-turning end 73 rotatably connected to the inner side of the base plate 2, a pile insertion slot 74 on the top surface of the pile-turning end 73, a bolt rod 77 fixedly connected to the top of the pile-turning end 73, an arc locking block 75 fixedly connected to the rear side of the pile-turning end 73, a locking groove arc plate 76 fixedly connected to the rear side of the arc locking block 75, an insertion block 79 slidably connected to the outer side of the arc locking block 75, an elastic groove block 78 slidably connected to the inner side of the insertion block 79, a push groove hinge block 710 hinged to the middle of the rear edge of the elastic groove block 78, and a pull rod 7 fixedly connected to the rear end of the push groove hinge block 710. 11. A handle 712 is fixedly connected to the rear end of the pull rod 711. The top frame 4 is rotatably connected to the guide wheel 71. One end of the cable 72 is fixedly connected to the upper frame 63, and the other end of the cable 72 is fixedly connected to the bolt rod 77. A spring is fixedly connected to the rear side of the elastic groove block 78, and the two ends of the spring are fixedly connected to the elastic groove block 78 and the insert block 79, respectively. The pull rod 711 is slidably connected to the base plate 2, and the insert block 79 is fixedly connected to the base plate 2. When the base frame 1 is installed, it needs to be reinforced by installing bolts buried in the ground through the pile bolt holes 8. When installing the pile, the hydraulic rod 51 is first in the extended state. At this time, the upper frame 63 At the highest point of the support rod 3, the lower frame 64 is positioned. By horizontally pulling the handle 712, the pull rod 711 is driven, causing the pull rod 711 to pull the elastic groove block 78 through the push groove hinge block 710. This causes the elastic groove block 78 to disengage from the slot on the side of the locking arc plate 76 and compress the elastic spring. At this point, the pile-turning end 73 is no longer locked and deflects 90 degrees around the connection point of the seat frame plate 2, allowing the pile body to be inserted into the pile insertion slot 74 inside the pile-turning end 73 in a horizontal manner with the help of the crane. Subsequently, the hydraulic rod 51 is retracted, causing the upper frame 63 and the lower frame 64 to move downwards. This causes the upper frame 63 to pull the cable 72, and the cable 72, around the guide pulley 71, pulls the bolt on the pile-turning end 73. 77. The pile flipping end 73 is rotated around the support plate 2 to stand upright and drive the pile body to rotate. The pile body is then erected with the help of a crane. The arc locking block 75 connected to the pile flipping end 73 is inserted into the insert block 79, so that the insert block 79 is inserted into the locking groove arc plate 76. Then, the elastic spring is reset and pushes the elastic groove block 78 into the side slot of the locking groove arc plate 76 to lock it. The pile body is lifted from a flat state to a vertical state, which can significantly improve construction efficiency and enhance operation safety. Specifically, the hydraulic lifting mechanism can achieve stable lifting and precise centering of the pile body through synchronous control of multiple oil cylinders, avoiding the pile body collision or personnel safety hazards caused by swinging during traditional crane lifting.

[0034] Working principle: When starting work, the external hydraulic pump is connected to the inlet port 53 on the side of the pressure dividing end shell 52 through a pipeline. When the hydraulic pump is in the liquid delivery state, it delivers liquid into the inlet port 53. The liquid enters the connecting groove end 55 through the inlet port 53, and then enters the pressure relief cylinder 56 through the connecting groove end 55. From the pressure relief cylinder 56, it directly enters the branch capillary tube 510, loosening the fixed pile. When the branch capillary tube 510 is full of liquid, the liquid is continuously delivered from the inlet port 53. When the pressure relief valve plate 59 slides along the pressure relief guide rod 58, it pulls the return spring, causing the liquid in the pressure relief cylinder 56 to be discharged through the drain pipe 57 and flow from around the pressure relief valve plate 59 into the pressure dividing end housing 52. As the liquid increases in the pressure dividing end housing 52, it enters the hydraulic rod 51 through the inlet port 54. At this time, the hydraulic rod 51 extends, causing the fastening mechanism 6 to move upward. When the external hydraulic pump is connected to the pressure dividing end housing 52 through a pipe and draws liquid from the inlet port 53, the liquid in the pressure relief cylinder 56 is drawn out, and the return spring... The spring pulls the pressure relief valve 59 back to its original position along the pressure relief guide rod 58, and draws away the liquid in the branch thin tube 510 connected to the pressure relief cylinder 56. At this time, the fastening mechanism 6 first fixes the pile body. As the extraction time continues, the pressure inside the pressure relief cylinder 56 changes from positive pressure to negative pressure. The negative pressure sucks the pressure relief valve 59 to slide along the pressure relief guide rod 58, squeezing the return spring. This allows the liquid in the hydraulic rod 51 to be drawn into the pressure dividing end shell 52 through the inlet port 54. Then, the pressure dividing end shell 52 draws the liquid out from the drain pipe 57 to the connecting groove end 5. 5. The hydraulic diversion structure can accurately distribute the pressure output by the hydraulic system to the two functional modules of pile fixing and pressurization, ensuring that the two work synchronously and in coordination. This not only avoids pile displacement or loosening caused by timing errors in traditional step-by-step operations, but also improves construction efficiency. The integrated design reduces the complexity of the mechanical structure and lowers the equipment failure rate. Synchronous operation reduces process switching time, making it especially suitable for soft soil foundations or engineering scenarios with high precision requirements. It can achieve continuous and stable pile driving operations, shorten the construction period and reduce labor costs.

[0035] When the branch tube 510 connected to the contraction cylinder 61 is in the pumping state, the contraction cylinder 61 begins to contract and pulls the upper frame 63 and the lower frame 64 closer together. At this time, the support rods 67 connected to the upper frame 63 and the lower frame 64 push the hinge push rod 68 closer to the pile body and surround it with the outside of the pile body. At this time, the pile body is inserted into the pre-dug pile foundation trench. By putting the electromagnetic vibrator 62 into working state, the electromagnetic vibrator 62 generates high-frequency vibration, and the vibrating upper frame 63... The vibration is transmitted to the connected frame base 67, and then to the contacting pile body via the hinged push rod 68 and the fitting arc plate 69. This allows the pile body to settle slowly into the pre-dug pile foundation trench under the action of high-frequency vibration and its own weight. Furthermore, as the upper frame 63 and lower frame 64 approach each other, the upper frame 63 presses the top of the contact block 66 through the connected pressure-applying folding plate 611, causing the contact block 66 to flip and tightly adhere to the pile body surface. This, combined with the contact arc plate 69, applies downward pressure to the pile body surface, thus reducing the settled pile body pressure. The pile body is driven by the retraction of the hydraulic rod 51, which moves the upper frame 63 and the lower frame 64 downward together to apply pressure to the pile body. In the initial stage, the electromagnetic vibration structure acts on the surface of the pile body through high-frequency micro-amplitude vibration, which can effectively break the static friction resistance between the pile body and the surrounding soil layers, and promote the initial sinking of the pile body under its own weight. This significantly reduces the starting force required for the subsequent hydraulic pressure stage, which is especially suitable for dense sand or clay geology. It can reduce the "pile rejection" phenomenon that may occur when the traditional static pressure pile driver directly applies pressure. In addition, the vibration can locally liquefy the soil around the pile, temporarily reducing the resistance at the pile end. With the guiding effect of the pre-excavated pile foundation trench, after switching to the hydraulic pressure stage, since the pile-soil contact state has been optimized by the previous vibration, the hydraulic system only needs to apply a stable and continuous pressure to complete the final pressure, thereby reducing the peak load of the equipment and avoiding the problem of stress concentration in the pile body caused by sudden pressure. Through phased construction, the dynamic matching of vibration parameter frequency / amplitude and hydraulic pressure can achieve adaptive control of different geological layers.

[0036] When installing the base frame 1, it needs to be reinforced by installing bolts buried in the ground through the pile bolt holes 8. When installing the pile, first let the hydraulic rod 51 be in the extended state. At this time, the upper frame 63 and the lower frame 64 are at the highest point of the support rod 3. By pulling the handle 712 horizontally, the pull rod 711 is driven, so that the pull rod 711 pulls the elastic groove block 78 through the push groove hinge block 710, so that the elastic groove block 78 disengages from the slot on the side of the locking arc plate 76 and compresses the elastic spring. At this time, the pile flipping end 73 is no longer locked and deflects 90 degrees around the connection of the seat plate 2, so that the pile body is inserted into the pile insertion slot 74 inside the pile flipping end 73 in a flat manner with the help of the crane. Then, the hydraulic rod 51 is retracted, which drives the upper frame 63 and the lower frame 64 to move downward, so that the upper frame 63... 3. Pull the cable 72, which, when wound around the guide wheel 71, pulls the bolt 77 on the pile-turning end 73, causing the pile-turning end 73 to rotate and stand upright around the support plate 2, thus rotating the pile body. With the help of the crane, the pile body is erected, and the arc locking block 75 connected to the pile-turning end 73 is inserted into the insert block 79, so that the insert block 79 is inserted into the locking groove arc plate 76. Then, the elastic spring is reset and pushes the elastic groove block 78 into the side slot of the locking groove arc plate 76 to lock it, thus lifting the pile body from a flat state to a vertical state. This can significantly improve construction efficiency and enhance operational safety. Specifically, the hydraulic lifting mechanism, through the synchronous control of multiple oil cylinders, can achieve stable lifting and precise centering of the pile body, avoiding the pile body collision or personnel safety hazards caused by swinging during traditional crane lifting.

[0037] This invention provides a composite pile driving device for static pressure pile drivers based on electromagnetic vibration. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A composite pile driving device based on electromagnetic vibration static pressure pile driver, comprising a base frame (1), characterized in that: The top surface of the base frame (1) is fixedly connected to a seat plate (2), the top of the seat plate (2) is fixedly connected to four support rods (3), the top of the four support rods (3) is fixedly connected to a top frame (4), and a pile driving mechanism (5) is provided on the rear side of the top of the top of the top frame (4). The pile driving mechanism (5) includes a hydraulic rod (51), a pressure-dividing end shell (52) is fixedly connected to the top of the hydraulic rod (51), an inlet port (53) is fixedly connected to the rear end of the pressure-dividing end shell (52), a connecting groove end (55) is fixedly connected to the rear side of the inner wall of the pressure-dividing end shell (52), pressure relief cylinders (56) are fixedly connected to the left and right ends of the connecting groove end (55), a drain pipe (57) is fixedly connected to the outer surface of each pressure relief cylinder (56), a pressure relief guide rod (58) is fixedly connected to the center of the inner side of the drain pipe (57), a pressure relief valve plate (59) is slidably connected to the outer side of the pressure relief guide rod (58), an inlet port (54) is fixedly connected to the outer side of the top of the hydraulic rod (51), and two branch thin pipes (510) are fixedly connected to the bottom surface of each pressure relief cylinder (56). A fastening mechanism (6) is provided below the top frame (4), and a hoisting and fixing mechanism (7) is provided below the fastening mechanism (6). Pile bolt holes (8) are provided at the four corners of the upper surface of the base frame (1). The pressure relief valve plate (59) is slidably connected to the pressure relief guide rod (58). A return spring is provided on the outside of the pressure relief guide rod (58), and the two ends of the return spring are fixedly connected to the pressure relief cylinder (56) and the pressure relief valve plate (59) respectively. The pressure dividing end shell (52) is connected to the inside of the inlet port (53). The inlet port (54) is located inside the pressure dividing end shell (52). The branch tube (510) extends downward from the inside of the pressure dividing end shell (52) to the bottom surface. The bottom end of the hydraulic rod (51) is fixedly connected to the seat plate (2).

2. The composite pile driving device based on electromagnetic vibration static pressure pile driver according to claim 1, characterized in that: The fastening mechanism (6) includes a shrink cylinder (61), an upper clamping frame (63) is slidably connected to the outside of the support rod (3), two lower clamping frames (64) are provided below the upper clamping frame (63), a frame rod seat (67) is fixedly connected to the side of both the upper clamping frame (63) and the lower clamping frame (64), a flipping frame (65) is fixedly connected to the side of each lower clamping frame (64), and a pressing block (66) is rotatably connected to the end of the flipping frame (65). The side of the 66) is provided with a contact groove (610), and a pressure baffle (611) is provided above the contact block (66). Two shrink cylinders (61) are fixedly connected to the left and right sides of the upper frame (63). An electromagnetic vibrator (62) is provided between the two shrink cylinders (61). A hinge push rod (68) is hinged to the end of each frame rod seat (67). A fitting arc plate (69) is hinged to the end of the hinge push rod (68) away from the frame rod seat (67).

3. The composite pile driving device based on electromagnetic vibration static pressure pile driver according to claim 2, characterized in that: The four inner corners of the upper frame (63) are fixedly connected to the support pole (67), and the sides of each lower frame (64) are fixedly connected to the two support poles (67). The pressure-applying folding plate (611) is fixedly connected to the upper frame (63), and the upper frame (63) is fixedly connected to the side hydraulic rod (51).

4. The composite pile driving device based on electromagnetic vibration static pressure pile driver according to claim 3, characterized in that: The electromagnetic vibrator (62) is fixedly connected to the upper frame (63), the bottom end of the shrink cylinder (61) is fixedly connected to the lower frame (64), and the bottom surface of the shrink cylinder (61) is connected to the end of the branch tube (510) away from the pressure dividing end shell (52).

5. The composite pile driving device based on electromagnetic vibration static pressure pile driver according to claim 4, characterized in that: The hoisting and fixing mechanism (7) includes a guide wheel (71), a cable (72) is provided on the outer side of the guide wheel (71), a pile-turning end (73) is rotatably connected to the inner side of the base plate (2), a pile insertion groove (74) is provided on the top surface of the pile-turning end (73), a bolt rod (77) is fixedly connected to the top of the pile-turning end (73), an arc lock block (75) is fixedly connected to the rear side of the pile-turning end (73), a locking groove arc plate (76) is fixedly connected to the rear side of the arc lock block (75), an insertion block (79) is slidably connected to the outer side of the arc lock block (75), an elastic groove block (78) is slidably connected to the inner side of the insertion block (79), a push groove hinge block (710) is hinged to the middle of the rear edge of the elastic groove block (78), a pull rod (711) is fixedly connected to the rear end of the push groove hinge block (710), and a handle (712) is fixedly connected to the rear end of the pull rod (711).

6. The composite pile driving device based on electromagnetic vibration static pressure pile driver according to claim 5, characterized in that: The top frame (4) is rotatably connected to the guide wheel (71), one end of the cable (72) is fixedly connected to the upper frame (63), and the other end of the cable (72) is fixedly connected to the bolt (77). A spring is fixedly connected to the rear side of the elastic groove block (78), and the two ends of the spring are fixedly connected to the elastic groove block (78) and the insert block (79) respectively. The pull rod (711) is slidably connected to the seat plate (2), and the insert block (79) is fixedly connected to the seat plate (2).

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