Stirring pile planting equipment and construction method

Abstract

The application provides a stirring pile planting device and a construction method. The stirring pile planting device comprises a main body and a lower vehicle platform. The main body comprises a stand, a first stirring device, a second stirring device and a pile pressing device. The first stirring device, the second stirring device and the pile pressing device are installed on the outer periphery of the stand at intervals on the same circumference and are configured to be movable along the axial direction parallel to the stand. The lower vehicle platform comprises a machine body. The machine body is provided with a pile position slot and is provided with a rotating disc. The stand is installed on the rotating disc. The rotating disc is configured to drive the stand to rotate, so that the first stirring device, the second stirring device and the pile pressing device are selectively aligned with the pile position slot.

Description

Technical Field

[0001] This application relates to the field of precast pile planting technology, and in particular to a mixing pile planting device and construction method. Background Technology

[0002] Due to its advantages such as high pile bearing capacity, low construction noise, and minimal disturbance to the ground, the soil-mixing pile method is widely used in soft soil foundation reinforcement, building foundation construction, and municipal roadbed treatment. In related technologies, the soil-mixing pile method employs two independent pieces of equipment—a soil-mixing pile frame and a pile driver—to complete the construction.

[0003] However, the dual-equipment operation mode has high equipment investment costs. After the mixing is completed, the entire machine needs to be moved to make way for the hole position before the pile driver can enter the site for operation. The construction cycle is long and the operation efficiency is low. Moreover, the relocation process is prone to pile position deviation, which directly affects the bearing capacity and structural stability after the pile is formed. Summary of the Invention

[0004] To address at least one of the above-mentioned and other technical problems in the prior art, embodiments of this application provide a mixing and planting equipment and construction method that can ensure the concentricity of mixing and precast pile implantation, thereby improving the accuracy of pile planting and the quality of the pile body.

[0005] As a first aspect of this application, a mixing and pile driving device is provided, including a main body and an unloading platform. The main body includes a column, a first mixing device, a second mixing device, and a pile driving device. The first mixing device, the second mixing device, and the pile driving device are installed at intervals on the outer periphery of the column on the same circumference and are all configured to be movable along an axial direction parallel to the column. The unloading platform includes a machine body, through which a pile position groove is provided and a rotating disk is installed. The column is installed on the rotating disk, and the rotating disk is configured to drive the column to rotate, so that the first mixing device, the second mixing device, and the pile driving device are selectively aligned vertically with the pile position groove.

[0006] According to an embodiment of this application, the column includes at least three slide rails and two spaced-apart gooseneck assemblies. The at least three slide rails are spaced apart and located on the same circumference, with each slide rail extending parallel to the axial direction of the column. The two spaced-apart gooseneck assemblies are mounted on the top of the column and configured to respectively suspend the first stirring device and the second stirring device, which move up and down along the slide rails.

[0007] According to an embodiment of this application, the column is configured as a truss structure.

[0008] According to an embodiment of this application, each gooseneck assembly includes a winch, a pulley block, and a traction cable. The winch is fixedly installed at the bottom of the column. The pulley block is fixed to the outwardly extending end of the top of the column and aligned vertically with the first or second stirring device. One end of the traction cable is wound and fixed to the drum of the winch, and the other end is wound around the pulley block and fixedly connected to the first or second stirring device. The winch is configured to drive the first or second stirring device to move vertically by retracting and extending the traction cable in both forward and reverse directions.

[0009] According to an embodiment of this application, the main body also includes a retainer. The retainer is fixed to the column and slidably connected to the drill rod of the first or second stirring device to limit the swing of the drill rod of the first or second stirring device.

[0010] According to an embodiment of this application, the pile driving device includes a pile clamping box, two support frames, and at least two pile driving cylinders. The two support frames are symmetrically arranged on both sides of the pile clamping box, and the pile clamping box is configured to move up and down relative to the support frames. At least two pile driving cylinders are symmetrically fixed to the two support frames, and the piston rods of the pile driving cylinders pass through the crossbeams of the support frames and are fixedly connected to the pile clamping box to drive the pile clamping box to move up and down relative to the support frames.

[0011] According to an embodiment of this application, the pile driving device further includes a lifting assembly and a gripper. The lifting assembly is mounted on the column and is configured to drive the support frame upward to disengage the pile clamping box from the pile location slot or to drive the support frame downward to allow the pile clamping box to enter the pile location slot. The gripper is fixed to the support frame and is configured to slide in engagement with a slide rail.

[0012] According to an embodiment of this application, the machine body is also fixedly provided with two pins, which are symmetrically distributed on both sides of the pile position groove. Each pin includes a hydraulic cylinder and a pin shaft. The extension direction of the hydraulic cylinder and the pin shaft is perpendicular to the crossbeam. The machine body is also fixedly provided with ring seats, and each pin is located between the two ring seats, coaxial with the two ring seats and spaced apart. Each pin is configured such that when the lugs of the two support frames are embedded between the two ring seats, the pin shaft is driven by the hydraulic cylinder to pass through the lugs and ring seats to limit the vertical movement of the support frames.

[0013] As a second aspect of this application, a method for constructing a mixing pile is provided, comprising: aligning the pile location slot of the mixing pile equipment with the target pile location vertically; driving the column to rotate so that the first mixing device rotates to be vertically aligned with the pile location slot; starting the first mixing device to continuously drill and rotate while mixing until the limit is reached; disassembling the drill rod of the first mixing device; driving the column to rotate so that the second mixing device rotates to be vertically aligned with the pile location slot; the lower end of the drill rod of the second mixing device is connected to the drill rod of the first mixing device; starting the second mixing device to continuously drill and rotate while mixing until the target design depth is reached to complete the mixing pile; after removing the second mixing device and the drill rod of the first mixing device from the mixing pile, driving the rotary table to rotate the column so that the pile driving device rotates to be vertically aligned with the pile location slot; and using a pin to hinge the support frame to the machine body. Then, a crane lifts the precast pile to pass through the pile driving device, and the pile clamping box is driven to clamp and press the precast pile into the mixing pile to complete the formed pile.

[0014] According to the embodiments of this application, the mixing and pile-planting equipment involves installing a first mixing device, a second mixing device, and a pile-driving device at intervals on the same circumference around the same column, all three of which can move along an axial direction parallel to the column. The column is mounted on a rotating disc on the machine body, with a pile-position slot running through the machine body. This allows the rotating disc to drive the column to rotate, which in turn drives the first mixing device, the second mixing device, and the pile-driving device to rotate around the same center of rotation. This allows one of the three devices to be aligned vertically with the pile-position slot, enabling the mixing and pile-planting processes to be switched at the same pile position, thus improving work efficiency. Sharing the same center of rotation helps ensure the concentricity of mixing and pile implantation, improving pile-planting accuracy and consequently enhancing the bearing capacity, stiffness, and structural stability of the pile after completion. Furthermore, the column is installed within the main body of the rotating disc and the lower platform structure, resulting in a small machine footprint suitable for small-site operations. The main body has two mixing devices, which helps meet the mixing requirements of deep strata. Therefore, the applicable strata and working conditions of the equipment are expanded. Attached Figure Description

[0015] The above and other objects, features and advantages of this application will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0016] Figure 1 A schematic front view of a mixing pile planting device according to an embodiment of this application is shown;

[0017] Figure 2 Schematic illustration Figure 1 A top view of the mixing and planting equipment shown;

[0018] Figure 3 Schematic illustration Figure 1 Left view of the mixing and planting equipment shown;

[0019] Figure 4 Schematic illustration Figure 3 An enlarged schematic diagram of part A in the middle;

[0020] Figure 5 Schematic illustration Figure 1 A three-dimensional schematic diagram of the pile driving device and the unloading platform of the mixing pile planting equipment shown;

[0021] Figure 6 A flowchart illustrating a method for mixing and planting piles according to an embodiment of this application is shown schematically.

[0022] Figure 7 Schematic illustration Figure 6 The diagram shows the formation of mixing piles and shaped piles in the mixing pile construction method.

[0023] In the accompanying drawings, the meanings of the reference numerals are as follows:

[0024] 1. Column; 11. Goose-head assembly; 12. Casing; 2. First mixing device; 21. Power head; 22. Drill rod; 221. Spiral mixing blade; 23. Slider; 3. Second mixing device; 4. Pile driving device; 41. Pile clamping box; 42. Support frame; 421. Crossbeam; 422. Ear seat; 43. Pile driving cylinder; 44. Lifting assembly; 441. Lifting cylinder; 442. Pulley assembly; 45. Claw gripper; 5. Machine body; 51. Pile position slot; 52. Rotary disc; 53. Pin; 531. Cylinder; 532. Ring seat; 54. Driver's cab; 6. Lifting support; 7. Longitudinal slide rail; 8. Lateral slide rail; 9. Crane; 91. Boom; 101. Mixing pile; 102. Molded pile; 103. Precast pile. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0026] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The terms “comprising,” “including,” etc., as used herein indicate the presence of features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0027] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0028] When using expressions such as "at least one of A, B, and C," the expression should generally be interpreted in accordance with the meaning commonly understood by those skilled in the art. For example, "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or systems having A, B, and C. Similarly, when using expressions such as "at least one of A, B, or C," the expression should generally be interpreted in accordance with the meaning commonly understood by those skilled in the art. For example, "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or systems having A, B, and C.

[0029] It should also be noted that the directional terms mentioned in the embodiments, such as "up," "down," "front," "back," "left," and "right," are only for reference to the directions in the accompanying drawings and are not intended to limit the scope of protection of this application. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or constructions will be omitted where they may cause confusion in understanding this application.

[0030] The mixing and planting equipment and construction method provided in this application can be widely used in soft soil foundation reinforcement and precast pile foundation construction in industrial and civil buildings, municipal engineering, highway and railway subgrades, etc., especially suitable for mixing and planting construction of soft strata such as backfill soil, clay, and silty clay. The mixing and planting method involves mixing the soil in the stratum and then implanting the precast piles, which is different from the traditional hammer driving or static pressure precast piles that directly squeeze the soil to drive the piles. The mixing and planting equipment has low construction noise, which can meet the needs of urban areas with high requirements for construction noise and environmental protection.

[0031] In related technologies, the mixing and pile driving operation is completed using two independent pieces of equipment: a mixing pile frame and a pile driver. The mixing pile frame performs the soil cutting and mixing operations. After mixing, the mixing pile frame needs to be moved to make room for the borehole, and then the pile driver enters the site to clamp the precast pile to complete the precast pile hoisting and implantation. In this multi-equipment operation method, the equipment investment cost is high, the relocation operation is time-consuming, and the construction efficiency is low. At the same time, the relocation and secondary alignment process is prone to pile position deviation. Not only are there alignment system errors, but in soft soil foundation construction, problems such as ground settlement and pile position mark displacement are also prone to occur, further amplifying the deviation. It is impossible to guarantee the concentricity of mixing and precast pile implantation. At best, it will cause pile tilting and excessive verticality; at worst, it will cause quality problems such as borehole collapse and pile breakage, directly affecting the bearing capacity and structural stability of the pile after completion. In addition, multi-equipment operation requires a larger relocation space, which is difficult to adapt to the construction of narrow sites in urban areas, limiting the application scope of the construction method.

[0032] Figure 1 A schematic front view of a mixing pile planting device according to an embodiment of this application is shown. Figure 2 Schematic illustration Figure 1 The image shows a top view of the mixing and planting equipment.

[0033] like Figures 1-2 As shown, as a first aspect of the embodiments of this application, a mixing pile planting device is provided, including a main body and an unloading platform. The main body includes a column 1, a first mixing device 2, a second mixing device 3, and a pile driving device 4. The first mixing device 2, the second mixing device 3, and the pile driving device 4 are installed at intervals on the outer periphery of the column 1 on the same circumference and are all configured to be movable along an axial direction parallel to the column 1. The unloading platform includes a machine body 5, which has a pile position groove 51 through it and is equipped with a rotating disk 52. The column 1 is installed on the rotating disk 52, and the rotating disk 52 is configured to drive the column 1 to rotate, so that the first mixing device 2, the second mixing device 3, and the pile driving device 4 are selectively aligned vertically with the pile position groove 51.

[0034] In some exemplary embodiments, the first mixing device 2, the second mixing device 3, and the pile driving device 4 are distributed at 120° intervals along the circumference of the column 1. The rotation centers of the drill rods 22 of the first mixing device 2 and the second mixing device 3, and the pile driving operation center of the pile driving device 4 are all located on the same circumference with the rotation center of the column 1 as the center. The radii of the first mixing device 2, the second mixing device 3, and the pile driving device 4 to the rotation center of the column 1 are the same. The first mixing device 2, the second mixing device 3, and the pile driving device 4 are all slidably connected to the column 1 and can move up and down in a direction parallel to the axial direction of the column 1 without interfering with each other during operation. The machine body 5 is a horizontally arranged cuboid structure, and the pile position groove 51 is a rectangular or square through groove that runs vertically through the machine body 5. The pile position groove 51 is a common channel for the drill rods 22 to drill downwards to form holes and for pile planting during mixing operations. The geometric center of the pile position groove 51 is vertically aligned with the center of the target pile position pre-marked at the construction site.

[0035] In some exemplary embodiments, the rotating disk 52 is 360° rotatable and includes a fixed inner ring, a rotating outer ring, and a bearing rolling element disposed between the fixed inner ring and the rotating outer ring. The fixed inner ring is rigidly fixed to the upper surface of the machine body 5, for example, by high-strength bolts, and the rotating outer ring is rigidly fixed to the bottom of the column 1. When the rotating outer ring rotates relative to the fixed inner ring, it can synchronously drive the column 1 to rotate. The rotation center of the rotating disk 52 is coaxially arranged with the geometric center of the machine body 5. The horizontal distance between the geometric center of the pile position groove 51 and the rotation center of the rotating disk 52 is the same as the radius from the working center of the first mixing device 2, the second mixing device 3, and the pile driving device 4 to the rotation center of the column 1. The rotating disk 52 can drive the column 1 to rotate around the rotation center as a whole, so that the working center of the first mixing device 2, the second mixing device 3, and the pile driving device 4 can be selectively rotated to be vertically aligned with the geometric center of the pile position groove 51, realizing the switching of mixing, relay mixing, and pile driving at the same target pile position without moving the entire machine.

[0036] In some exemplary embodiments, the fuselage 5 is movably mounted on the ground. The disembarkation platform also includes four lifting supports 6, two longitudinal slide rails 7, and two transverse slide rails 8. The four lifting supports 6 respectively support different sides of the fuselage 5 and are configured to move the fuselage 5 up and down. The two longitudinal slide rails 7 are symmetrically arranged on both sides of the fuselage 5 along its length, and the extension direction of both longitudinal slide rails 7 is perpendicular to the length direction of the fuselage 5. The two transverse slide rails 8 are symmetrically arranged on both sides of the fuselage 5 along its width, and the extension direction of both transverse slide rails 8 is parallel to the length direction of the fuselage 5. Two of the lifting supports 6 are configured to slide along the longitudinal slide rails 7. The other two lifting supports 6 are configured to slide along the transverse slide rails 8.

[0037] Furthermore, the two longitudinal slide rails 7 and the two transverse slide rails 8 are rectangular in structure and distributed at intervals around the machine body 5. The four lifting supports 6 can extend and retract synchronously or individually to lift the machine body 5 off the ground. By adjusting the extension and retraction of each lifting support 6, the levelness of the machine body 5 can be finely adjusted to ensure the vertical accuracy of the column 1. After the machine body 5 is lifted, the lifting supports 6 can move the lower platform longitudinally (along the width of the machine body 5), laterally (along the length of the machine body 5), and turn at a small angle in place by sliding synchronously along the corresponding slide rails. Fine-tuning and alignment can be achieved without moving the entire machine over a large area, further avoiding alignment deviations caused by moving the machine and ensuring operational concentricity.

[0038] In some exemplary embodiments, the unloading platform also includes a driver's cab 54 and a crane 9. The driver's cab 54 is located at the end of the machine body 5 and is equipped with a control system for operators to control the rotation of the rotary table 52, the movement of the machine body 5, etc. The crane 9 is located on the side of the pile position slot 51 opposite to the rotary table 52, and the crane 9 and the pile position slot 51 are spaced apart. The crane 9 includes a base, a boom 91, a rope, and a hook. The base is mounted on the machine body 5, and the boom 91 of the crane 9 can move relative to the base to drive the rope and the hook to move synchronously, so that the hook and the pile position slot 51 can be vertically aligned.

[0039] According to the mixing and pile planting equipment of this application embodiment, the first mixing device 2, the second mixing device 3, and the pile driving device 4 are installed at intervals on the same circumference around the same column 1, and all three can move along an axial direction parallel to the column 1. Simultaneously, the column 1 is installed on a rotating disk 52 of the machine body 5, and the machine body 5 is provided with a pile position groove 51. This allows the rotating disk 52 to drive the column 1 to rotate, thereby driving the first mixing device 2, the second mixing device 3, and the pile driving device 4 to rotate around the same rotation center. This allows one of the three devices to be vertically aligned with the pile position groove 51, enabling the switching between mixing and pile planting processes to be completed at the same position, thus improving work efficiency. Sharing the same rotation center helps ensure the concentricity of mixing and pile implantation, improving pile planting accuracy, and consequently enhancing the bearing capacity, stiffness, and structural stability of the pile after completion. Furthermore, the column 1 is installed in the main body and lower platform structure of the rotary table 52. The machine body 5 occupies a small area and is suitable for small site operations. The main body is equipped with two mixing devices, which is conducive to meeting the mixing needs of deep strata. Therefore, the applicable strata and working conditions of the equipment are expanded.

[0040] Figure 3 Schematic illustration Figure 1 The left view of the mixing and planting equipment shown. Figure 4 Schematic illustration Figure 3 An enlarged schematic diagram of part A in the middle.

[0041] like Figures 3-4 As shown, according to an embodiment of this application, the column 1 includes at least three slide rails and two spaced-apart gooseneck assemblies 11. The at least three slide rails are spaced apart and located on the same circumference, with each slide rail extending parallel to the axial direction of the column 1. The two spaced-apart gooseneck assemblies 11 are mounted on the top of the column 1 and are configured to respectively suspend the first stirring device 2 and the second stirring device 3, which move up and down along the slide rails.

[0042] According to an embodiment of this application, column 1 is configured as a truss structure.

[0043] In some exemplary embodiments, the column 1 is composed of multiple circumferentially spaced main chord members and multiple web members connecting adjacent main chord members to form a truss structure. Each slide rail is, for example, a structure with a uniform cross-section. When three slide rails are provided, the three slide rails are distributed at 120° intervals along the rotation center of the column 1, for example. The angle between the center of any two adjacent slide rails and the rotation center is 120°, and the centers of all three are located on the same circumference with the rotation center as the center. The two gooseneck assemblies 11 correspond to the positions of the two slide rails on which the first stirring device 2 and the second stirring device 3 are installed, respectively, to ensure that the hoisted first stirring device 2 and the second stirring device 3 can move up and down along the slide rails.

[0044] According to the above embodiments of this application, a truss-type column 1 is provided to provide a stable installation foundation for the first mixing device 2, the second mixing device 3, and the pile driving device 4. At least three independent slide rails provide independent movement guides for the mixing device and the pile driving device 4, avoiding mutual interference between the devices during operation. Furthermore, since at least three slide rails are located on the same circumference, the stability and alignment accuracy of each device during the rotation of the column 1 are ensured. The column 1 is configured as a truss structure, providing strong resistance to deformation, and the gooseneck assembly 11 for hoisting the mixing device is installed on top of the column 1, ensuring the stability of the drilling and lifting operations of the mixing device.

[0045] According to an embodiment of this application, each goosehead assembly 11 includes a winch, a pulley block, and a traction cable. The winch is fixedly installed at the bottom of the column 1. The pulley block is fixed to the outwardly extending end of the top of the column 1 and aligned vertically with the first stirring device 2 or the second stirring device 3. One end of the traction cable is wound and fixed to the drum of the winch, and the other end is wound around the pulley block and fixedly connected to the first stirring device 2 or the second stirring device 3. The winch is configured to drive the first stirring device 2 or the second stirring device 3 to move vertically by retracting and extending the traction cable in both forward and reverse directions.

[0046] According to an embodiment of this application, the main body also includes a retainer. The retainer is fixed to the column 1 and slidably connected to the drill rod 22 of the first stirring device 2 or the second stirring device 3 to limit the swinging of the drill rod 22 of the first stirring device 2 or the second stirring device 3.

[0047] In some exemplary embodiments, the center of the top of the column 1 is coaxially arranged with the rotation center of the column 1, and the two goose-head assemblies 11 are vertically aligned with the corresponding slide rail positions of the first stirring device 2 and the second stirring device 3, respectively. The outwardly extending end of the top of the column 1 is located directly above the corresponding slide rail. The pulley system includes a fixed pulley fixed to the outwardly extending end of the top of the column 1, and a movable pulley installed on the top of the power head 21 of the first stirring device 2 or the second stirring device 3. The traction cable is a high-strength steel wire rope, which is wound around the fixed pulley and the movable pulley in sequence to form a force-saving pulley system.

[0048] In some exemplary embodiments, a winch is fixedly installed at the bottom of the column 1, and a traction cable is wound around the winch drum. The forward and reverse rotation of the winch drum drives the traction cable to be retracted or released, thereby driving the first stirring device 2 or the second stirring device 3 to move vertically up and down along the slide rail. The slider 23 is fastened to the side of the slide rail facing the power head 21 of the first stirring device 2 or the second stirring device 3 by bolts. The slide rail has grooves on both sides, and the slider 23 has mating protrusions on both sides that fit into the grooves, so that the slider 23 and the slide rail form a sliding engagement.

[0049] In some exemplary embodiments, the output shaft of the power head 21 of the first stirring device 2 or the second stirring device 3 is connected to the top end of the drill rod 22 to drive the drill rod 22 to rotate about its own axis. The lower outer wall of the drill rod 22 of the first stirring device 2 is equipped with continuous spiral stirring blades 221, the middle outer wall of the drill rod 22 of the first stirring device 2 is equipped with stirring blades at intervals, and the upper part of the drill rod 22 of the first stirring device 2 and the outer wall of the drill rod 22 of the second stirring device 3 are not equipped with blades.

[0050] In some exemplary embodiments, the drill rods 22 of the first stirring device 2 and the second stirring device 3 respectively pass through the through holes of two retainers or two sets of retainers. The retainers are fixed to the column 1 by bolts. When two sets of retainers are provided, each set of retainers is arranged with multiple retainers spaced apart along the axial direction of the column 1. When the drill rod 22 of the first stirring device 2 or the second stirring device 3 swings, it contacts the wall surface of the through hole of the retainer to prevent the drill rod 22 from continuing to swing. In addition, the main body also includes a protective sleeve 12. The protective sleeve 12 is fixed to the lower part of the column 1, and the through hole of the protective sleeve 12 is vertically aligned with the drill rod 22 of the first stirring device 2. The drill rod 22 of the first stirring device 2 passes through the through hole of the protective sleeve 12, which improves the accuracy of the alignment between the drill rod 22 and the pile position groove 51, and restricts the swing of the drill rod 22 by contacting the wall surface of the through hole of the protective sleeve 12, thus ensuring the verticality of the stirring.

[0051] According to the above embodiments of this application, the top of the column 1 provides a stable installation foundation for the gooseneck assembly 11, and the pulley block is positioned directly above the first mixing device 2 or the second mixing device 3 by the extended end of the top of the column 1, ensuring the vertical transmission of the lifting force and avoiding jamming caused by horizontal component force during lifting. The sliding cooperation between the slider 23 and the slide rail provides guidance for the lifting of the first mixing device 2 or the second mixing device 3, ensuring that the drill rod 22 is in a vertical state and avoiding hole deviation during mixing. The power head 21 of the first mixing device 2 or the second mixing device 3 drives the drill rod 22 to rotate, and the winch drives the drill rod 22 to drill, achieving synchronous operation of rotational mixing and vertical feed of the drill rod 22, ensuring uniform mixing. Furthermore, the drill rod 22 of the first mixing device 2 is detachably connected, allowing the lower end of the drill rod 22 of the second mixing device 3 to be connected to the drill rod 22 of the first mixing device 2, enabling relay operation of the first mixing device 2 and meeting the mixing construction requirements of deep strata.

[0052] Figure 5 Schematic illustration Figure 1 A three-dimensional schematic diagram of the pile driving device and the unloading platform of the mixing pile planting equipment shown.

[0053] like Figure 5 As shown, according to an embodiment of this application, the pile driving device 4 includes a pile clamping box 41, two support frames 42, and at least two pile driving cylinders 43. The two support frames 42 are symmetrically arranged on both sides of the pile clamping box 41, and the pile clamping box 41 is configured to move up and down relative to the support frames 42. At least two pile driving cylinders 43 are symmetrically fixed to the two support frames 42, and the piston rod of the pile driving cylinder 43 passes through the crossbeam 421 of the support frame 42 and is fixedly connected to the pile clamping box 41 to drive the pile clamping box 41 to move up and down relative to the support frames 42.

[0054] According to an embodiment of this application, the pile driving device 4 further includes a lifting assembly 44 and a gripper 45. The lifting assembly 44 is mounted on the column 1 and is configured to drive the support frame 42 upward to disengage the pile clamping box 41 from the pile position groove 51 or to drive the support frame 42 downward to allow the pile clamping box 41 to enter the pile position groove 51. The gripper 45 is fixed to the support frame 42 and is configured to slide in engagement with the slide rail.

[0055] In some exemplary embodiments, the crossbeams 421 of both support frames 42 are located above the pile clamping box 41. The pile driving cylinders 43 are, for example, hydraulic cylinders, and four pile driving cylinders 43 are symmetrically distributed. Two pile driving cylinders 43 are fixedly installed on each support frame 42. The cylinder barrel of the pile driving cylinder 43 is rigidly fixed to the upper surface of the crossbeam 421. The piston rod of the pile driving cylinder 43 passes vertically downward through the crossbeam 421, and the end of the piston rod is fixedly connected to the top end face of the pile clamping box 41 through a flange. The extension and retraction of the piston rod of the pile driving cylinder 43 drives the pile clamping box 41 to move up and down relative to the support frame 42.

[0056] In some exemplary embodiments, the lifting assembly 44 includes a lifting cylinder 441, a pulley assembly 442, and a wire rope. The lifting cylinder 441 is fixed to the column 1, and is, for example, a hydraulic cylinder. The pulley assembly 442 is fixed to the column 1 and located above the lifting cylinder 441. The wire rope is wound around the pulley assembly 442, with one end connected to the lifting cylinder 441 and the other end connected to the pile driving cylinder 43 or the support frame 42. The lifting cylinder 441 is configured to drive the wire rope to retract or release, thereby driving the pile driving device 4 to rise or fall. Grooves are provided on both sides of the slide rail, and the gripper 45 is configured in an L-shape or T-shape. One sidewall of the gripper 45 is fastened to the side of the support frame 42 near the slide rail by bolts, and the other sidewall is embedded in the groove, so that the gripper 45 and the slide rail form a sliding engagement.

[0057] According to the above embodiments of this application, the symmetrically arranged support frame 42 and pile driving cylinder 43 provide a uniform vertical driving force to the pile clamping box 41, thereby pressing and fixing the pile body and avoiding pile tilting and breakage caused by eccentric loading. The sliding cooperation between the gripper 45 and the slide rail provides guidance for the lifting and lowering of the pile driving device 4. The lifting component 44 can drive the pile driving device 4 to lift and lower as a whole, realizing the lifting of the pile clamping box 41 in the non-operation state to avoid interference with the mixing operation, and the lowering of the pile clamping box 41 into the pile position groove 51 for pile driving in the operation state, thereby improving construction efficiency.

[0058] According to an embodiment of this application, the machine body 5 is further fixedly provided with two pins 53, which are symmetrically distributed on both sides of the pile position groove 51. Each pin 53 includes a hydraulic cylinder 531 and a pin shaft. The extension direction of the hydraulic cylinder 531 and the pin shaft is perpendicular to the crossbeam 421. The machine body 5 is also fixedly provided with ring seats 532, and each pin is located between the two ring seats 532, coaxial with the two ring seats 532 and spaced apart. Each pin 53 is configured such that when the ear seats 422 of the two support frames 42 are embedded between the two ring seats 532, the pin shaft is driven by the hydraulic cylinder 531 to pass through the ear seats 422 and the ring seats 532 to restrict the vertical movement of the support frame 42.

[0059] In some exemplary embodiments, two hydraulic cylinders 531 are symmetrically distributed on both sides of the pile position groove 51. Each hydraulic cylinder 531 is provided with a pin, and each hydraulic cylinder 531 is fixed to the upper surface of the machine body 5 by welding or bolting. Four ring seats 532 are respectively welded to the outer ends of the two hydraulic cylinders 531 and are coaxially arranged with the hydraulic cylinders 531 and the pin. Two ear seats 422 are symmetrically and spaced apart on both sides of each support frame 42 by integral molding or welding, and the through holes of the four ear seats 422 are located at the same horizontal height. When the pin is driven by the hydraulic cylinder 531 to pass through the ear seats 422 and the ring seats 532, the support frame 42 is fixed to the machine body 5. Therefore, the pile driving cylinder 43 can drive the pile clamping box 41 to move downward relative to the support frame 42 and the machine body 5 to enter the pile position groove 51.

[0060] According to the above embodiments of this application, the support frame 42 of the pile driving device 4 is rigidly locked to the machine body 5 by two pins 53, which facilitates the pile clamping box 41 to perform pile planting operation under the drive of the pile driving cylinder 43. In addition, the locked pile driving device 4 is aligned and fixed with the pile position groove 51, avoiding positional displacement during the pile planting process.

[0061] Figure 6 A flowchart illustrating a method for mixing and planting piles according to an embodiment of this application is shown schematically. Figure 7 Schematic illustration Figure 6 The diagram shows the formation of mixing piles and shaped piles in the mixing pile construction method.

[0062] like Figures 6-7 As shown, as a second aspect of the embodiments of this application, a method for mixing and planting piles is provided, including operation S110-operation S150.

[0063] When operating S110, the pile position slot 51 of the mixing and planting equipment is aligned vertically with the target pile position.

[0064] In operation S120, drive column 1 to rotate so that the first mixing device 2 rotates to be vertically aligned with the pile position groove 51. Start the first mixing device 2 to continuously drill and rotate and mix. After reaching the stroke limit, disassemble the drill rod 22 of the first mixing device 2. Drive column 1 to rotate so that the second mixing device 3 rotates to be vertically aligned with the pile position groove 51. The lower end of the drill rod 22 of the second mixing device 3 is connected to the drill rod 22 of the first mixing device 2.

[0065] During operation S130, the second mixing device 3 is started to continuously drill and rotate to mix until the target design depth is reached to complete the mixing pile 101.

[0066] In operation S140, after the second mixing device 3 and the drill rod 22 of the first mixing device 2 are pulled out from the mixing pile 101, the rotating disk 52 is driven to rotate the column 1 so that the pile driving device 4 is rotated to be aligned with the pile position groove 51, and the support frame 42 is hinged to the machine body 5 by the pin 53.

[0067] In some exemplary embodiments, the winch is started and the second mixing device 3 is moved upward by the traction cable, so that the drill rod 22 of the second mixing device 3 and the drill rod 22 of the first mixing device 2 are pulled out from the mixing pile 101, and the drill rod 22 of the first mixing device 2 is detached from the lower end of the drill rod 22 of the second mixing device 3 and reconnected to the first mixing device 2 for the next target pile position.

[0068] In some exemplary embodiments, when the pile driving device 4 rotates to be vertically aligned with the pile position groove 51, the support frame 42 is driven to fall down by the lifting component 44, and the support frame 42 is fixed by the pin 53, so that the pile clamping box 41 enters the pile position groove 51.

[0069] In operation S150, the precast pile 103 is lifted by the crane 9 to pass through the pile pressing device 4, and the pile clamping box 41 is driven to clamp the precast pile 103 and press it into the mixing pile 101 to complete the construction of the formed pile 102.

[0070] According to the mixing and pile planting method of this application embodiment, continuous operation of mixing, relay mixing, and precast pile 103 implantation is achieved through the mixing and pile planting equipment. This eliminates the need for frequent relocation and alternating operation of multiple machines, shortening the waiting time for process connections at individual target pile locations and improving on-site work efficiency. Simultaneously, it avoids pile position deviations caused by equipment relocation, effectively ensuring the concentricity of mixing and pile planting, preventing quality problems such as pile tilting and pile breakage, and improving the bearing capacity, structural rigidity, and long-term stability of the pile after completion. The relay operation of two mixing devices overcomes the stroke limitations of a single mixing device, meeting the mixing requirements of deep strata. Furthermore, this mixing and pile planting method reduces construction noise and vibration, adapting to urban environmental protection construction requirements.

[0071] The embodiments of this application have been described above. However, these embodiments are merely illustrative and not intended to limit the scope of this application. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of this application is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this application, and all such substitutions and modifications should fall within the scope of this application.

Claims

1. A mixing and planting equipment, characterized in that, include: The main body includes a column (1), a first mixing device (2), a second mixing device (3), and a pile driving device (4). The first mixing device (2), the second mixing device (3), and the pile driving device (4) are installed at intervals on the outer periphery of the column (1) on the same circumference and are all configured to be movable along an axial direction parallel to the column (1). The platform includes a body (5), which has a through pile slot (51) and a rotating disk (52) installed thereon. The column (1) is installed on the rotating disk (52). The rotating disk (52) is configured to drive the column (1) to rotate, so that the first mixing device (2), the second mixing device (3) and the pile driving device (4) are selectively aligned vertically with the pile slot (51).

2. The mixing and planting equipment according to claim 1, characterized in that, The column (1) includes: At least three slide rails, the at least three slide rails are spaced apart and located on the same circumference, and each slide rail extends parallel to the axial direction of the column (1); Two spaced-apart goose head assemblies (11) are installed on the top of the column (1) and are configured to respectively suspend the first stirring device (2) and the second stirring device (3) and move up and down along the slide rail.

3. The mixing and planting equipment according to claim 1, characterized in that, The column (1) is configured as a truss structure.

4. The mixing and planting equipment according to claim 2, characterized in that, Each of the goose head components (11) includes: The winch is fixedly installed at the bottom of the column (1); The pulley block is fixed to the outwardly extending end of the top of the column (1) and aligned vertically with the first stirring device (2) or the second stirring device (3); The traction cable has one end wound and fixed to the drum of the winch, and the other end wound around the pulley block and fixedly connected to the first stirring device (2) or the second stirring device (3); wherein the winch is configured to drive the first stirring device (2) or the second stirring device (3) to move up and down by retracting the traction cable in both forward and reverse directions.

5. The mixing and planting equipment according to claim 1, characterized in that, The subject also includes: A retainer, fixed to the column (1), is slidably connected to the drill rod (22) of the first stirring device (2) or the second stirring device (3) to limit the swing of the drill rod (22) of the first stirring device (2) or the second stirring device (3).

6. The mixing and planting equipment according to claim 2, characterized in that, The pile driving device (4) includes: Pile clamping box (41); Two support frames (42) are symmetrically arranged on both sides of the pile clamping box (41), and the pile clamping box (41) is configured to move up and down relative to the support frames (42); At least two pile-driving cylinders (43) are symmetrically fixed on the two support frames (42). The piston rod of the pile-driving cylinder (43) passes through the crossbeam (421) of the support frame (42) and is fixedly connected to the pile clamping box (41) to drive the pile clamping box (41) to move up and down relative to the support frame (42).

7. The mixing and planting equipment according to claim 6, characterized in that, The pile driving device (4) also includes: The lifting assembly (44), mounted on the column (1), is configured to drive the support frame (42) to rise so that the pile clamping box (41) leaves the pile position slot (51) or drive the support frame (42) to lower so that the pile clamping box (41) enters the pile position slot (51). The gripper (45), fixed to the support frame (42), is configured to slide in cooperation with the slide rail.

8. The mixing and planting equipment according to claim 6, characterized in that, The body (5) is also fixedly provided with two pins (53), which are symmetrically distributed on both sides of the pile position groove (51). Each pin (53) includes a hydraulic cylinder (531) and a pin shaft, and extends perpendicular to the crossbeam (421). The body (5) is also fixedly provided with a ring seat (532), and each of the pins (53) is located between two ring seats (532), coaxial with the two ring seats (532) and spaced apart; Each of the pins (53) is configured such that when the lugs (422) of the two support frames (42) are embedded between the two ring seats (532), the pin is driven by the cylinder (531) to pass through the lugs (422) and the ring seats (532) to restrict the up and down movement of the support frame (42).

9. A method for constructing piles by mixing water, characterized in that, include: According to claim 8, the pile position groove (51) of the mixing pile planting equipment is vertically aligned with the target pile position; Drive the column (1) to rotate so that the first mixing device (2) is rotated to be aligned with the pile position groove (51) vertically. Start the first mixing device (2) to continuously drill and rotate until the limit is reached. Then, disassemble the drill rod (22) of the first mixing device (2). Drive the column (1) to rotate so that the second mixing device (3) is rotated to be aligned with the pile position groove (51) vertically. The lower end of the drill rod (22) of the second mixing device (3) is connected to the drill rod (22) of the first mixing device (2). Start the second mixing device (3) to continuously drill and rotate the mixing until the target design depth is reached to complete the mixing pile (101). After the second mixing device (3) and the drill rod (22) of the first mixing device (2) are pulled out from the mixing pile (101), the rotating disk (52) is driven to drive the column (1) to rotate so that the pile driving device (4) is rotated to be aligned with the pile position groove (51) vertically, and the support frame (42) is hinged to the machine body (5) by the pin (53); Then, the precast pile (103) is lifted by the crane (9) to pass through the pile pressing device (4), and the pile clamping box (41) is driven to clamp the precast pile (103) and press it into the mixing pile (101) to complete the construction of the formed pile (102).

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