Composite pile sinking device of static pressure pile machine based on electromagnetic excitation

Abstract

The invention relates to the technical field of static pile pressing machines, and discloses a static pile pressing machine composite pile sinking device based on electromagnetic excitation, which comprises a bottom frame, a seat frame plate is fixedly connected to the top surface of the bottom frame, a top frame is fixedly connected to the top ends of four supporting rods, and a pile pressing mechanism is arranged on the rear side of the seat frame plate fixedly connected to the top end of the top frame. The pile pressing mechanism comprises a hydraulic rod, the top end of the hydraulic rod is fixedly connected with a partial pressure end shell, the rear end of the partial pressure end shell is fixedly connected with an inflow port, the rear side of the inner wall of the partial pressure end shell is fixedly connected with a communicating groove end, and the left end and the right end of the communicating groove end are fixedly connected with pressure relief cylinders. According to the hydraulic pressure distribution device, pressure output by a hydraulic system can be accurately distributed to the pile body fixing function module and the pressure applying function module through the hydraulic pressure distribution structure, it is guaranteed that the pile body fixing function module and the pressure applying function module work synchronously and coordinately, and pile body deviation or loosening caused by time sequence errors in traditional step-by-step operation is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of static pile drivers, and in particular to a composite pile driving device of a static pile driver based on electromagnetic excitation. Background Art

[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 application method can easily lead to problems such as difficulty in penetrating the pile, large vertical deviations, or excessive equipment load in dense soil or complex geological conditions, resulting in reduced construction efficiency and even damage to the pile body. In addition, traditional processes usually rely on external lifting equipment to lift the pile from a horizontal state to a vertical state, which not only increases the complexity of mechanical coordination, but also easily causes the pile body to tilt or collide due to lifting errors, affecting construction accuracy and safety.

[0003] Patent publication number CN101487749A discloses a device and method for measuring the driving resistance of static piles in the field of construction measurement technology. The device comprises a sensor, a recorder, and a protective sleeve. One end of the protective sleeve is fixedly connected to the pile driver's jack, the sensor is sleeved within the protective sleeve and connected to the pile driver's jack, the other end of the protective sleeve is connected to the pile cap via a movable bolt, and the sensor is connected to the recorder via a cable. This patent accurately measures and records the changes in driving resistance during static pile driving in real time. Furthermore, the accumulation and summary of driving resistance data can be used to pre-evaluate the feasibility of a site and estimate the required counterweight for static piles, thus avoiding waste caused by excessive counterweight and insufficient counterweight resulting in insufficient reaction force from the pile driver. However, this patent suffers from the problem of pile body deviation or loosening caused by timing errors in traditional step-by-step operation. Therefore, a composite pile driving device for a static pile driver based on electromagnetic excitation is proposed to address this issue. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the deficiencies in the above-mentioned prior art and provide a composite pile driving device of a static pile driver based on electromagnetic excitation.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a static pile driver composite pile driving device based on electromagnetic excitation, comprising a base frame, the top surface of the base frame is fixedly connected to a seat frame plate, the top ends of the four support rods are fixedly connected to a top frame, and the top end of the top frame is fixedly connected to the seat frame plate and a pile driving mechanism is provided on the rear side; The pile driving mechanism includes a hydraulic rod, the top end of the hydraulic rod is fixedly connected to a pressure-dividing end shell, the rear end of the pressure-dividing end shell is fixedly connected to an inlet port, the rear side of the inner wall of the pressure-dividing end shell is fixedly connected to a connecting groove end, the left and right ends of the connecting groove end are fixedly connected to pressure relief cylinders, the outer surface of each pressure relief cylinder is fixedly connected to a discharge pipe, the inner center of the discharge pipe is fixedly connected to a pressure relief guide rod, the outer side of the pressure relief guide rod is slidably connected to a pressure relief valve plate, the pressure relief valve plate, the outer side of the top end of the hydraulic rod is fixedly connected to the inlet port, and the bottom surface of each pressure relief cylinder is fixedly connected to two branch capillaries.

[0006] The top of the seat frame plate is fixedly connected with four supporting rods, a fastening mechanism is provided below the top frame, a hoisting and fixing mechanism is provided below the fastening mechanism, and pile bolt holes are provided at the four corners of the upper surface of the base frame.

[0007] According to the above technical solution, the pressure relief valve plate is slidably connected to the pressure relief guide rod, and a return spring is provided on the outside 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 dividing end shell is connected to the inside of the inlet port, and the inlet port is located inside the pressure dividing end shell, and the branch capillary penetrates downward from the inside of the pressure dividing end shell out of the bottom surface, and the bottom end of the hydraulic rod is fixedly connected to the seat plate. When working, the external hydraulic pump is connected to the inlet port on the side of the pressure dividing end shell through a pipeline. When the hydraulic pump is in an infusion state, liquid is transported to the inside of the inlet port through the hydraulic pump, and the liquid enters the inside of the connecting groove end through the inlet port, and then enters the pressure relief cylinder through the inside of the connecting groove end, and directly enters the branch capillary from the pressure relief cylinder, so that the fixed pile body is loosened. When the branch capillary is filled with liquid, the continuous input of liquid from the inlet port will squeeze the pressure relief valve. When the hydraulic pump is connected to the pressure-dividing end shell through the pipeline and extracts liquid from the inlet port, the hydraulic rod extends and drives the fastening mechanism to move upward. When the external hydraulic pump is connected to the pressure-dividing end shell through the pipeline and extracts liquid from the inlet port, the liquid in the pressure-dividing end shell is extracted. At this time, after the liquid in the pressure-dividing end shell is extracted, the reset spring will pull the pressure-relief valve plate to reset along the pressure-relief guide rod and extract the liquid in the branch tube connected to the pressure-relief cylinder. At this time, the pile body is first fixed by the fastening mechanism. As the extraction time continues, the internal pressure of the pressure-relief cylinder is converted from positive pressure to negative pressure. The negative pressure sucks the pressure-relief valve plate to slide along the pressure-relief guide rod to squeeze the reset spring, and allow the liquid in the hydraulic rod to be sucked into the pressure-dividing end shell through the inlet port, and then the pressure-dividing end shell extracts the liquid from the discharge pipe to the connecting groove end.

[0008] The cam is secured to the chassis and has two camshafts that are connected to the chassis, and the cams are secured to the chassis by means of a lever that is secured to the chassis.

[0009] According to the above technical solution, the four inner corners of the upper closing frame are fixedly connected to the frame rod seats, each side of the lower closing frame is fixedly connected to two frame rod seats, the pressure folding plate is fixedly connected to the upper closing frame, and the upper closing frame is fixedly connected to the side hydraulic rod.

[0010] According to the above technical solution, the electromagnetic vibrator is fixedly connected to the upper closing frame, the bottom end of the contraction liquid cylinder is fixedly connected to the lower closing frame, and the bottom surface of the contraction liquid cylinder is connected to the end of the branch tube away from the pressure-dividing end shell. When the branch tube connected to the contraction liquid cylinder is in the liquid pumping state, the contraction liquid cylinder begins to contract and pulls the upper closing frame and the lower closing frame closer to each other. At this time, the frame rod seats connected to the upper closing frame and the lower closing frame jointly push the hinge push rod close to the pile body, and fit with the outer side of the pile body to surround it. At this time, the pile body is inserted into the pre-dug pile foundation groove, and the electromagnetic vibrator is put into working state to produce High-frequency vibration is generated, and the upper closing frame that generates vibration transmits the vibration to the connected frame rod seat, and is transmitted to the contacted pile body by the fitting arc plate connected by the hinge push rod, so that the pile body can slowly sink and be inserted into the pre-dug pile foundation groove under the action of high-frequency vibration and deadweight. In addition, when the upper closing frame and the lower closing frame are closer, the upper closing frame squeezes the top of the contact pressure block through the connected pressure folding plate, so that the contact pressure block is turned over and fits tightly to the surface of the pile body, and cooperates with the fitting arc plate to contact the surface of the pile body and apply downward pressure, and the settled pile body is driven by the contraction of the hydraulic rod to move the upper and lower closing frames downward together to apply pressure to the pile body.

[0011] According to the above technical solution, the lifting and fixing mechanism includes a guide rope wheel, a cable is provided on the outside of the guide rope wheel, the inner side of the seat frame plate is rotatably connected to the pile-turning end, the top surface of the pile-turning end is provided with a pile insertion groove, the top of the pile-turning end is fixedly connected to a bolt rod, the rear side surface of the pile-turning end is fixedly connected to an arc locking block, the rear side surface of the arc locking block is fixedly connected to a locking groove arc plate, the outer side of the arc locking block is slidingly connected to an insertion block, the inner side of the insertion block is slidingly connected to an elastic groove block, the middle part of the rear edge of the elastic groove block is hingedly connected to a push groove hinge block, the rear end of the push groove hinge block is fixedly connected to a pull rod, and the rear end of the pull rod is fixedly connected to a handle.

[0012] According to the above technical solution, the top frame is rotatably connected to the guide rope wheel, one end of the cable is fixedly connected to the upper closing frame, and the other end of the cable is fixedly connected to the bolt rod, the rear side of the elastic slot block is fixedly connected with an elastic spring, and the two ends of the elastic spring are respectively fixedly connected to the elastic slot block and the insert block, the pull rod is slidably connected to the seat frame plate, and the insert block is fixedly connected to the seat frame plate. When the base frame is installed, it is necessary to install bolts buried underground through the pile bolt holes for reinforcement. When installing the pile body, first let the hydraulic rod be in an extended state. At this time, the upper closing frame and the lower closing frame are at the highest point of the support rod. The pull rod is driven by pulling the handle horizontally, so that the pull rod is pulled through the push groove hinge block. The elastic slot block allows the elastic slot block to disengage from the slot on the side of the lock slot arc plate and compress the elastic spring. At this time, the pile turning end is no longer locked and deflected ninety degrees around the connection with the seat frame plate, allowing the pile body to cooperate with the crane to lie flat and insert into the pile insertion slot on the inside of the pile turning end. Then the hydraulic rod is retracted to drive the upper and lower frames to move downward, so that the upper frame pulls the cable, and the cable pulls the bolt rod on the pile turning end around the guide cable wheel, so that the pile turning end is flipped upright around the seat frame plate and drives the pile body to flip, and cooperate with the crane to stand up the pile body, and insert the arc locking block connected to the pile turning end into the insert block, so that the insert block is inserted into the lock slot arc plate, and then the elastic spring is reset to push the elastic slot block into the slot on the side of the lock slot arc plate to lock it.

[0013] The present invention adopts the above technical solution, which can bring the following beneficial effects: The composite pile driving device of the static pile driver based on electromagnetic excitation has a hydraulic diversion structure that can accurately distribute the pressure output by the hydraulic system to the two functional modules of pile fixing and pressure application, ensuring that the two work synchronously and coordinatedly. It not only avoids the displacement or loosening of the pile body 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 reduces the equipment failure rate. The synchronous operation reduces the process switching time. It is especially suitable for soft soil foundations or engineering scenarios with high precision requirements. It can realize continuous and stable pile driving operations, shorten construction period and reduce labor costs.

[0014] This electromagnetically excited static pile driver composite pile driving device uses a high-frequency, low-amplitude electromagnetic vibration structure to initially apply high-frequency vibrations to the pile surface, effectively breaking the static friction between the pile and the surrounding soil. This allows the pile to initially sink under its own weight, significantly reducing the starting force required in the subsequent hydraulic pressure application phase. This device is particularly suitable for dense sand or clay strata, mitigating the "pile rejection" phenomenon that can occur with direct pressure from traditional static pile drivers. Furthermore, the vibration can partially liquefy the soil around the pile, temporarily reducing pile end resistance. Combined with the guiding effect of the pre-excavated pile foundation trench, after the hydraulic pressure phase, the initial vibration has optimized the pile-soil contact, allowing the hydraulic system to achieve final pressure with only steady, continuous pressure. This reduces peak equipment load and avoids stress concentration in the pile caused by sudden pressure application. Phased construction allows for dynamic matching of vibration parameters (frequency / amplitude) with hydraulic pressure, enabling adaptive control for different geological strata.

[0015] This static pile driver composite pile driving device based on electromagnetic excitation can lift the pile body from a lying 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 cylinders, avoiding pile body collisions or personnel safety hazards caused by swinging during traditional crane lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall front three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall rear-view stereoscopic structure of the present invention; Figure 3 It is a structural diagram of the position distribution of the mechanism of the present invention; Figure 4 Schematic diagram of the structure of the pile pressing mechanism of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure of A; Figure 6 Schematic diagram of the structure of the fastening mechanism of the present invention; Figure 7 This is a structural diagram of the lifting and fixing mechanism of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of B; Figure 9 For the present invention Figure 7 Schematic diagram of the enlarged structure of C in the middle.

[0017] In the figure: 1, bottom frame; 2, seat frame plate; 3, support rod; 4, top frame; 5, pile pressing mechanism; 51, hydraulic rod; 52, pressure dividing end shell; 53, inlet port; 54, inlet port; 55, connecting groove end; 56, pressure relief cylinder; 57, discharge pipe; 58, pressure relief guide rod; 59, pressure relief valve plate; 510, branch capillary; 6, fastening mechanism; 61, contraction cylinder; 62, electromagnetic vibrator; 63, upper closing frame; 64, lower closing frame; 65, Flip frame; 66, contact pressure block; 67, frame rod seat; 68, hinge push rod; 69, fitting arc plate; 610, contact groove; 611, pressure folding plate; 7, lifting and fixing mechanism; 71, guide pulley; 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 bolt hole. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figures 1-9 The embodiment of the present invention is: a static pile driver composite pile driving device based on electromagnetic excitation, comprising a base frame 1, a base plate 2 being fixedly connected to the top surface of the base frame 1, a top frame 4 being fixedly connected to the top end of four support rods 3, a pile driving mechanism 5 being provided on the rear side of the base plate 2 being fixedly connected to the top end of the base frame 4; The pile driving mechanism 5 includes a hydraulic rod 51, the top of the hydraulic rod 51 is fixedly connected to a pressure-dividing end shell 52, the rear end of the pressure-dividing end shell 52 is fixedly connected to an inlet port 53, the rear side of the inner wall of the pressure-dividing end shell 52 is fixedly connected to a connecting groove end 55, the left and right ends of the connecting groove end 55 are fixedly connected to a pressure relief cylinder 56, the outer surface of each pressure relief cylinder 56 is fixedly connected to a discharge pipe 57, the inner center of the discharge pipe 57 is fixedly connected to a pressure relief guide rod 58, the outer side of the pressure relief guide rod 58 is slidably connected to a pressure relief valve plate 59, the pressure relief valve plate 59, the outer side of the top of the hydraulic rod 51 is fixedly connected to the inlet port 54, and the bottom surface of each pressure relief cylinder 56 is fixedly connected to two branch capillaries 510.

[0020] The top of the seat frame plate 2 is fixedly connected with four supporting rods 3, a fastening mechanism 6 is provided under the top frame 4, and a lifting and fixing mechanism 7 is provided under the fastening mechanism 6. There are pile bolt holes 8 at the four corners of the upper surface of the bottom frame 1. The pressure relief valve plate 59 is slidably connected with 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 respectively fixedly connected to the pressure relief cylinder 56 and the pressure relief valve plate 59. The pressure dividing end shell 52 is connected to the inside of the inlet port 53, and the inlet port 54 is located inside the pressure dividing end shell 52. The branch tube 510 passes through the bottom surface downward from the inside of the pressure dividing end shell 52. The bottom end of the hydraulic rod 51 is fixedly connected to the seat frame plate 2. When working, the external hydraulic The 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 infusion state, the liquid is transported to the inside of the inlet port 53 through the hydraulic pump. The liquid enters the inside of 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 tube 510 to loosen the fixed pile body. When the branch tube 510 is filled with liquid, the liquid is continuously input from the inlet port 53, which squeezes the pressure relief valve plate 59 to slide along the pressure relief guide rod 58 and pulls the reset spring to stretch. The liquid in the pressure relief cylinder 56 will be discharged through the discharge pipe 57 and flow into the pressure-dividing end shell 52 from around the pressure relief valve plate 59. The increased liquid in the pressure-dividing end shell 52 will enter the hydraulic rod 51 through the inlet port 54. At this time, the hydraulic rod 51 extends to drive the fastening mechanism 6 to move upward. When the external hydraulic pump is connected to the pressure-dividing end shell 52 through a pipeline to extract liquid from the inlet port 53, the liquid in the pressure relief cylinder 56 is extracted. The return spring will pull the pressure relief valve plate 59 to reset along the pressure relief guide rod 58 and extract the liquid in the branch tube 510 connected to the pressure relief cylinder 56. At this time, the pile body is first fixed by the fastening mechanism 6. As the extraction time continues, the internal pressure of the pressure relief cylinder 56 is converted from positive pressure to negative pressure. The negative pressure sucks the pressure relief valve plate 59 and slides along the pressure relief guide rod 58 to squeeze the return spring, and The liquid in the hydraulic rod 51 is sucked into the pressure-dividing end shell 52 through the inlet port 54, and then the pressure-dividing end shell 52 draws the liquid out from the discharge 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 pressure application, ensuring that the two work synchronously and coordinatedly, which not only avoids the displacement or loosening of the pile body 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 reduces 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 achieve continuous and stable pile driving operations, shorten construction period and reduce labor costs.

[0021] The fastening mechanism 6 includes a contraction liquid cylinder 61, and the outer side of the support rod 3 is slidably connected to the upper closing frame 63. Two lower closing frames 64 are arranged below the upper closing frame 63. The sides of the upper closing frame 63 and the lower closing frame 64 are fixedly connected to the frame rod seats 67. The sides of each lower closing frame 64 are fixedly connected to a flip frame 65. The end of the flip frame 65 is rotatably connected to the contact pressure block 66. The side of the contact pressure block 66 is provided with a contact groove 610, and a pressure folding plate 611 is arranged above the contact pressure block 66. The left and right sides of the upper closing frame 63 are fixedly connected to two contraction liquid cylinders 61. An electromagnetic vibrator 62 is arranged between the two contraction liquid cylinders 61. The end of each frame rod seat 67 is hingedly connected to a hinge push rod 68, and the end of the hinge push rod 68 away from the frame rod seat 67 is hingedly connected to a fitting arc plate. 69. The four inner corners of the upper closing frame 63 are fixedly connected to the frame rod seats 67. The side surfaces of each lower closing frame 64 are fixedly connected to the two frame rod seats 67. The pressure folding plate 611 is fixedly connected to the upper closing frame 63. The upper closing frame 63 is fixedly connected to the side hydraulic rod 51. The electromagnetic vibrator 62 is fixedly connected to the upper closing frame 63. The bottom end of the contraction liquid cylinder 61 is fixedly connected to the lower closing frame 64. The bottom surface of the contraction liquid cylinder 61 is connected to the end of the branch capillary 510 away from the pressure dividing end shell 52. When the branch capillary 510 connected to the contraction liquid cylinder 61 is in the liquid pumping state, the contraction liquid cylinder 61 begins to contract and pull the upper closing frame 63 and the lower closing frame 64 closer to each other. At this time, the frame rod seats 67 connected to the upper closing frame 63 and the lower closing frame 64 jointly push the hinge push rod 68 close to the pile body and separate from the pile body. The pile body is then inserted into the pre-dug pile foundation groove by fitting the side of the pile body, and the electromagnetic vibrator 62 is put into working state, so that the electromagnetic vibrator 62 generates high-frequency vibration, and the vibration-generating upper closing frame 63 transmits the vibration to the connected frame rod seat 67, and the fitting arc plate 69 connected by the hinge push rod 68 transmits it to the contacted pile body, so that the pile body is slowly inserted into the pre-dug pile foundation groove by settling under the action of high-frequency vibration and deadweight. In addition, when the upper closing frame 63 and the lower closing frame 64 are closer, the upper closing frame 63 squeezes the top of the contact pressure block 66 through the connected pressure folding plate 611, so that the contact pressure block 66 is turned over and tightly fits the surface of the pile body, and cooperates with the fitting arc plate 69 to contact the surface of the pile body and apply downward pressure, so that the settled pile body is brought forward by the contraction of the hydraulic rod 51 The upper and lower frames 63 and 64 move 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 layer, and promote the initial sinking of the pile body under the action of its own weight, significantly reducing the starting force required for the subsequent hydraulic pressure stage. It is especially suitable for dense sand layers or clay geology, and can reduce the "pile rejection" phenomenon that may occur when traditional static pressure pile drivers directly apply pressure. In addition, the vibration effect can partially 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 groove, after switching to the hydraulic pressure stage, since the early vibration has optimized the pile-soil contact state, the hydraulic system only needs to apply steady continuous pressure to complete the final pressure, thereby reducing the peak load of the equipment.It can avoid the problem of pile stress concentration caused by sudden pressure application. Through phased construction, the dynamic matching of vibration parameter frequency / amplitude and hydraulic pressure can be achieved to achieve adaptive regulation of different geological layers.

[0022] The lifting and fixing mechanism 7 includes a guide wheel 71, a cable 72 is provided on the outside of the guide wheel 71, the inner side of the seat frame plate 2 is rotatably connected to the pile turning end 73, the top surface of the pile turning end 73 is provided with a pile insertion groove 74, the top of the pile turning end 73 is fixedly connected to a bolt rod 77, the rear side surface of the pile turning end 73 is fixedly connected to an arc locking block 75, the rear side surface of the arc locking block 75 is fixedly connected to a locking groove arc plate 76, the outer side of the arc locking block 75 is slidably connected to an insert block 79, the inner side of the insert block 79 is slidably connected to an elastic groove block 78, the middle part of the rear edge of the elastic groove block 78 is hingedly connected to a push groove hinge block 710, and the rear end of the push groove hinge block 710 is fixedly connected to the pull rod 7 11. The rear end of the pull rod 711 is fixedly connected to a handle 712. The top frame 4 is rotatably connected to the guide rope wheel 71. One end of the cable 72 is fixedly connected to the upper closing frame 63, and the other end of the cable 72 is fixedly connected to the bolt rod 77. The rear side of the elastic groove block 78 is fixedly connected to an elastic spring, and the two ends of the elastic spring are respectively fixedly connected to the elastic groove block 78 and the plug block 79. The pull rod 711 is slidably connected to the seat frame plate 2, and the plug block 79 is fixedly connected to the seat frame plate 2. When the base frame 1 is installed, it is necessary to install bolts buried underground through the pile bolt holes 8 for reinforcement. When installing the pile body, first let the hydraulic rod 51 be in an extended state. At this time, the upper closing frame 63 The upper and lower frames 63 and 64 are at the highest point of the support rod 3, and the pull rod 711 is driven by pulling the handle 712 horizontally, so that the pull rod 711 pulls the elastic slot block 78 through the push slot hinge block 710, allowing the elastic slot block 78 to disengage the slot on the side of the lock slot arc plate 76 and compress the elastic spring. At this time, the pile turning end 73 is no longer locked and deflects ninety degrees around the connection with the seat frame plate 2, allowing the pile body to cooperate with the crane to lie flat and insert into the pile insertion groove 74 on the inside of the pile turning end 73. Then, the hydraulic rod 51 is retracted, driving the upper and lower frames 63 and 64 to move downward, so that the upper frame 63 pulls the cable 72, and the cable 72 pulls the bolt on the pile turning end 73 around the guide pulley 71. 77, let the pile-turning end 73 flip and stand upright around the seat plate 2 and drive the pile body to flip, cooperate with the crane to stand up the pile body, and insert the arc locking block 75 connected to the pile-turning end 73 into the insert block 79, so that the insert block 79 is inserted into the locking groove arc plate 76, and then let the elastic spring reset to push the elastic groove block 78 to insert into the side slot of the locking groove arc plate 76 to lock it, and lift the pile body from a lying state to a vertical state, which can significantly improve construction efficiency and enhance work safety. Specifically, the hydraulic lifting mechanism can realize the stable lifting and precise centering of the pile body through the synchronous control of multiple oil cylinders, avoiding the pile body collision or personnel safety hazards caused by swinging during lifting by traditional cranes.

[0023] Working principle: When it starts working, 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 infusion state, the hydraulic pump transports liquid to the inside of the inlet port 53. The liquid enters the inside of 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 tube 510 to loosen the fixed pile body. When the branch tube 510 is filled with liquid, the liquid is continuously input from the inlet port 53. The pressure relief valve disc 59 will be squeezed to slide along the pressure relief guide rod 58 and pull the reset spring to stretch. The liquid in the pressure relief cylinder 56 will be discharged through the discharge pipe 57 and flow from the pressure relief valve disc 59 to the pressure dividing end shell 52. The increased liquid in the pressure dividing end shell 52 will enter the hydraulic rod 51 through the inlet port 54. At this time, the hydraulic rod 51 extends to drive the fastening mechanism 6 to move upward. When the external hydraulic pump is connected to the pressure dividing end shell 52 through a pipeline to extract liquid from the inlet port 53, the liquid in the pressure relief cylinder 56 is extracted, and the reset spring The pressure relief valve disc 59 will be pulled to reset along the pressure relief guide rod 58, and the liquid in the branch tube 510 connected to the pressure relief cylinder 56 will be pumped away. At this time, the pile body is first fixed by the fastening mechanism 6. As the extraction time continues, the internal pressure of the pressure relief cylinder 56 is converted from positive pressure to negative pressure. The negative pressure sucks the pressure relief valve disc 59 to slide along the pressure relief guide rod 58 to squeeze the reset spring, and the liquid in the hydraulic rod 51 is sucked into the pressure dividing end shell 52 through the inlet port 54, and then the pressure dividing end shell 52 pumps the liquid out from the discharge 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 pressure application, ensuring that the two work synchronously and coordinatedly. This not only avoids the displacement or loosening of the pile body 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 the equipment failure rate. The synchronous operation reduces the process switching time. It is particularly suitable for soft soil foundation or high-precision engineering scenarios. It can achieve continuous and stable pile driving operations, shorten construction period and reduce labor costs. When the branch capillary 510 connected to the contraction liquid cylinder 61 is in the state of pumping liquid, the contraction liquid cylinder 61 begins to contract and pulls the upper closing frame 63 and the lower closing frame 64 closer to each other. At this time, the frame rod seat 67 connected to the upper closing frame 63 and the lower closing frame 64 jointly pushes the hinge push rod 68 close to the pile body and fits with the outer side of the pile body to surround it. At this time, the pile body is inserted into the pre-dug pile foundation groove, and the electromagnetic vibrator 62 is put into working state, so that the electromagnetic vibrator 62 generates high-frequency vibration, and the vibrating upper closing frame 63 is vibrated. The vibration is transmitted to the connected frame rod seat 67, and is transmitted to the contacted pile body by the fitting arc plate 69 connected to the hinge push rod 68, so that the pile body can be slowly inserted into the pre-dug pile foundation groove by settling under the action of high-frequency vibration and self-weight. In addition, when the upper closing frame 63 and the lower closing frame 64 are closer, the upper closing frame 63 squeezes the top of the contact pressure block 66 through the connected pressure folding plate 611, so that the contact pressure block 66 is turned over and tightly fits the surface of the pile body, and cooperates with the fitting arc plate 69 to contact the surface of the pile body and apply downward pressure, so that the settled pile body is The pile body is driven downward by the contraction of the hydraulic rod 51, driving the upper and lower frames 63 and 64 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 layer and promote the initial sinking of the pile body under the action of its own weight, significantly reducing the starting force required for the subsequent hydraulic pressure application stage. It is particularly suitable for dense sand or clay strata and can reduce the "pile rejection" phenomenon that may occur when traditional static pile drivers directly apply pressure. In addition, the vibration effect can locally liquefy the soil around the pile, temporarily reducing the resistance of the pile end. Combined with the guiding effect of the pre-excavated pile foundation trench, after switching to the hydraulic pressure stage, since the early vibration has optimized the pile-soil contact state, the hydraulic system only needs to apply steady continuous pressure to achieve 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 application. Through staged construction, adaptive regulation of different geological layers can be achieved by dynamically matching the vibration parameter frequency / amplitude with the hydraulic pressure. When the base frame 1 is installed, it is necessary to install the bolts buried in the ground through the pile bolt holes 8 for reinforcement. When installing the pile body, 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 slot block 78 through the push slot hinge block 710, allowing the elastic slot block 78 to disengage from the slot on the side of the lock slot arc plate 76 and compress the elastic spring. At this time, the pile turning end 73 is no longer locked and deflected ninety degrees around the connection point of the seat frame plate 2, allowing the pile body to cooperate with the crane to lie flat and insert into the pile insertion groove 74 on the inside of the pile turning end 73. Then, the hydraulic rod 51 is retracted, driving the upper frame 63 and the lower frame 64 to move downward, so that the upper frame 6 The pile body is then lifted from the horizontal position by the action of a crane, and the pile body is lifted from the vertical position by the action of a crane, and the pile body is ...

[0024] The present invention provides a static pile driver composite pile driving device based on electromagnetic excitation. There are many methods and approaches to implement this technical solution. The above is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention. Such improvements and modifications should also be considered within the scope of protection of the present invention. Any components not specified in this embodiment may be implemented using existing technologies.

Claims

1. A static pile driver composite pile driving device based on electromagnetic excitation, comprising a base frame (1), characterized in that: The top surface of the base frame (1) is fixedly connected to a seat frame plate (2), the top end of the seat frame plate (2) is fixedly connected to four support rods (3), the top ends of the four support rods (3) are fixedly connected to a top frame (4), and the top end of the top frame (4) is fixedly connected to the seat frame plate (2), and a pile pressing mechanism (5) is provided on the rear side; The pile driving mechanism (5) comprises a hydraulic rod (51), the top end of the hydraulic rod (51) is fixedly connected to a pressure dividing end shell (52), the rear end of the pressure dividing end shell (52) is fixedly connected to an inlet port (53), the rear side of the inner wall of the pressure dividing end shell (52) is fixedly connected to a connecting groove end (55), the left and right ends of the connecting groove end (55) are fixedly connected to a pressure relief cylinder (56), the outer surface of each pressure relief cylinder (56) is fixedly connected to a discharge pipe (57), the inner center of the discharge pipe (57) is fixedly connected to a pressure relief guide rod (58), the outer side of the pressure relief guide rod (58) is slidably connected to a pressure relief valve plate (59), the pressure relief valve plate (59), the outer side of the top end of the hydraulic rod (51) is fixedly connected to an inlet port (54), and the bottom surface of each pressure relief cylinder (56) is fixedly connected to two branch capillaries (510).

2. The composite pile driving device of a static pile driver based on electromagnetic excitation according to claim 1, characterized in that: A fastening mechanism (6) is provided below the top frame (4), a hoisting and fixing mechanism (7) is provided below the fastening mechanism (6), and pile bolt holes (8) are provided at the four corners of the upper surface of the bottom frame (1).

3. The composite pile driving device of a static pile driver based on electromagnetic excitation according to claim 2, characterized in that: 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), and the inlet port (54) is located inside the pressure dividing end shell (52). The branch capillary (510) passes through the bottom surface downward from the inside of the pressure dividing end shell (52), and the bottom end of the hydraulic rod (51) is fixedly connected to the seat frame plate (2).

4. The composite pile driving device of a static pile driver based on electromagnetic excitation according to claim 3 is characterized in that: The fastening mechanism (6) includes a contraction liquid cylinder (61), the outer side of the support rod (3) is slidably connected to an upper closing frame (63), two lower closing frames (64) are provided below the upper closing frame (63), the sides of the upper closing frame (63) and the lower closing frame (64) are fixedly connected to a frame rod seat (67), each side of the lower closing frame (64) is fixedly connected to a flip frame (65), the end of the flip frame (65) is rotatably connected to a contact pressure block (66), and the contact pressure block ( 66) is provided with a resistance groove (610) on the side, a pressure folding plate (611) is provided above the contact pressure block (66), two contraction liquid cylinders (61) are fixedly connected to the left and right sides of the upper closing frame (63), an electromagnetic vibrator (62) is provided between the two contraction liquid cylinders (61), and each end of the frame rod seat (67) is hingedly connected to a hinge push rod (68), and the end of the hinge push rod (68) away from the frame rod seat (67) is hingedly connected to a fitting arc plate (69).

5. The composite pile driving device of a static pile driver based on electromagnetic excitation according to claim 4, characterized in that: The four inner corners of the upper closing frame (63) are fixedly connected to the frame rod seats (67), the side surfaces of each lower closing frame (64) are fixedly connected to two frame rod seats (67), the pressure folding plate (611) is fixedly connected to the upper closing frame (63), and the upper closing frame (63) is fixedly connected to the side hydraulic rod (51).

6. The composite pile driving device of a static pile driver based on electromagnetic excitation according to claim 5, characterized in that: The electromagnetic vibrator (62) is fixedly connected to the upper closing frame (63), the bottom end of the contraction liquid cylinder (61) is fixedly connected to the lower closing frame (64), and the bottom surface of the contraction liquid cylinder (61) is connected to the end of the branch tube (510) away from the pressure dividing end shell (52).

7. The electromagnetic excitation-based static pile driver composite pile driving device according to claim 6, characterized in that: The hoisting and fixing mechanism (7) includes a guide rope wheel (71), a cable (72) is provided on the outer side of the guide rope wheel (71), the inner side of the seat frame plate (2) is rotatably connected to a pile turning end (73), the top surface of the pile turning end (73) is provided with a pile inserting groove (74), the top end of the pile turning end (73) is fixedly connected to a bolt rod (77), the rear side surface of the pile turning end (73) is fixedly connected to an arc locking block (75), the rear side surface of the arc locking block (75) is fixedly connected to a locking groove arc plate (76), the outer side of the arc locking block (75) is slidably connected to an inserting block (79), the inner side of the inserting block (79) is slidably connected to an elastic groove block (78), the middle part of the rear side edge of the elastic groove block (78) is hingedly connected to a push groove hinge block (710), the rear end of the push groove hinge block (710) is fixedly connected to a pull rod (711), and the rear end of the pull rod (711) is fixedly connected to a handle (712).

8. The composite pile driving device of a static pile driver based on electromagnetic excitation according to claim 7, characterized in that: The top frame (4) is rotatably connected to the guide rope wheel (71), one end of the cable (72) is fixedly connected to the upper closing frame (63), and the other end of the cable (72) is fixedly connected to the bolt rod (77), the rear side of the elastic slot block (78) is fixedly connected to an elastic spring, and the two ends of the elastic spring are respectively fixedly connected to the elastic slot block (78) and the insert block (79), the pull rod (711) is slidably connected to the seat frame plate (2), and the insert block (79) is fixedly connected to the seat frame plate (2).

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