Vibroflotation equipment

Abstract

The invention discloses vibroflotation equipment, and relates to the technical field of engineering machinery, and the vibroflotation equipment comprises a machine body assembly, a sleeve pulling device and a vibroflotation device. In the vibroflotation equipment, a machine body assembly is provided with a stand column, and the stand column is provided with a first guide rail; the sleeve pulling device is arranged on the first guide rail in a liftable manner and is used for pulling a sleeve; the vibroflotation device is arranged on the first guide rail in a liftable mode, is matched with the sleeve pulling device in a penetrating mode and is used for vibroflotation of the foundation, and the sleeve pulling device and the vibroflotation device work cooperatively. According to the vibroflotation equipment, the sleeve can be pulled out cooperatively during vibroflotation, the pile body quality is good, and the construction efficiency is high.

Description

Technical Field

[0001] This application relates to the field of engineering machinery technology, and in particular to a vibratory compaction device. Background Technology

[0002] Vibro-compaction is a foundation treatment technology widely used for reinforcing soft foundations. It typically involves using a crane or drilling rig to hoist a vibro-compactor with a guide rod, utilizing the high-frequency excitation force of the vibro-compactor to compact the soft foundation. Alternatively, holes can be formed in the soil layer using vibro-compacting, and then crushed stone materials can be filled into the holes in sections and compacted using vibro-compacting. Ultimately, a composite foundation is formed by vibro-compacted crushed stone piles and the surrounding soil, thereby improving the foundation bearing capacity, enhancing overall stability, and improving resistance to earthquake liquefaction.

[0003] As the scale of engineering construction expands, the vibro-compaction method is gradually being extended to deeper and more complex geological conditions. When the designed pile depth exceeds the drilling capacity of existing vibro-compaction machines in one pass, or when encountering hard layers, gravel layers, thick sand layers, or other strata that are difficult to penetrate directly with vibro-compaction, the conventional process requires first using a pilot-drilling rig to pre-drill the hole and insert a casing, then removing the pilot-drilling equipment, replacing it with a vibro-compaction machine to continue vibro-compaction drilling to the designed depth, and finally feeding material to vibro-compact the pile.

[0004] However, while vibrating and crushing the stone, the casing needs to be pulled out section by section. Current technology generally uses independent equipment (such as rotary drilling rigs and cranes) to complete the casing extraction. Before each extraction, the vibratory compactor must be completely removed from the borehole, forming a cross-operation mode of "vibratory compaction - machine relocation - casing extraction - return to position - re-vibratory compaction". This mode has the following drawbacks:

[0005] 1. If a long casing is pulled out at once, the borehole wall loses its support and is prone to collapse in loose or water-rich strata, resulting in a reduction in pile diameter, pile breakage, or even a waste hole. It is necessary to re-drill the hole, and the quality of the pile is difficult to guarantee.

[0006] 2. If the pipe is pulled out in sections and multiple times, the machine needs to be moved and returned to its original position frequently. Each section of pipe is pulled out and the equipment is repositioned and connected to the borehole. The auxiliary operation time increases exponentially, the construction cycle of a single pile is greatly extended, and the efficiency is significantly reduced.

[0007] 3. Cross-operations also bring problems such as increased equipment occupation, complex site scheduling, increased energy consumption and construction costs, which seriously restrict the efficient application of vibro-compaction in ultra-deep and complex geological conditions.

[0008] Therefore, existing technologies urgently need a new process and supporting equipment that can achieve continuous and controllable pipe pulling while vibratory compaction, avoid hole collapse and reduce the number of machine relocations, so as to balance pile quality and construction efficiency. Summary of the Invention

[0009] The purpose of this application is to provide a vibratory compaction device that can achieve simultaneous extraction of the casing during vibratory compaction, resulting in not only good pile quality but also high construction efficiency.

[0010] To achieve the above objectives, this application provides a vibratory compaction device, comprising:

[0011] The fuselage assembly has a column on it, and the column has a first guide rail;

[0012] A sleeve-pulling device is mounted on the first guide rail in a lifting manner and is used for pulling out sleeves;

[0013] The vibratory compaction device is mounted on the first guide rail in a lifting manner and is installed in conjunction with the sleeve removal device to vibrate the foundation. The sleeve removal device and the vibratory compaction device work together.

[0014] In some embodiments, the column is further provided with a second guide rail, and the vibratory compaction device further includes:

[0015] The lower sleeve device is mounted on the second guide rail and is used to lower the sleeve.

[0016] The pilot hole device is vertically mounted on the second guide rail and is fitted with the lower casing device for drilling pilot holes. The pilot hole device and the lower casing device work together.

[0017] When the machine body assembly is in the first position, the hole-reaming device and the lower sleeve device are in working condition. When the machine body assembly is switched to the second position, the vibratory impact device and the sleeve-pulling device are in working condition.

[0018] In some embodiments, the lower sleeve device includes an outer power head, the outer power head having a first hollow structure, and a first drive sleeve mounted on the outer power head. The first drive sleeve is used to connect to the sleeve to drive the sleeve to rotate.

[0019] In some embodiments, the pilot hole device includes an inner power head and a drill rod. The inner power head is used to drive the drill rod to drill into the pilot hole. The drill rod is fitted with a first hollow structure so that the drill rod passes through the outer power head.

[0020] In some embodiments, the tube removal device has a second hollow structure. The tube removal device includes an upper structure and a lower structure. The lower structure is connected to the upper structure through a rotating joint. The lower structure is provided with a driving component and a second driving sleeve. The second driving sleeve is used to connect the tube and is driven by the driving component to rub the tube.

[0021] In some embodiments, the vibratory impact device includes:

[0022] A vibratory impactor with a guide rod, both the guide rod and the vibratory impactor are inserted and fitted into the second hollow structure;

[0023] The lifting retainer is slidably connected to the first guide rail and includes a locking plate and a pin cylinder. The pin cylinder is used to drive the locking plate to fix the guide rod.

[0024] The support retainer is slidably connected to the first guide rail and connected to the guide rod via a flexible rope, and is used to follow the rise and fall of the guide rod.

[0025] In some embodiments, the pre-drilling device, the lower sleeve device, the vibratory punching device, and the sleeve pulling device share the same lifting system, which includes:

[0026] The main winch, located on the machine body assembly, is used to control the lifting and lowering of the hole-reaming device, the lower sleeve device, the vibratory impact device, and the sleeve-pulling device.

[0027] The goose-head structure is mounted on the column;

[0028] The pulley block, located in the pre-hole device, the lower sleeve device, the vibratory impact device, and the sleeve pulling device, is configured to be driven by the winch wire rope that winds down through the gooseneck structure to achieve lifting and lowering.

[0029] In some embodiments, the vibratory compaction equipment further includes a first traveling mechanism and a second traveling mechanism. The machine body assembly achieves left-right translation through the first traveling mechanism, and the machine body assembly achieves front-back translation through the second traveling mechanism.

[0030] In some embodiments, the vibratory compaction device further includes:

[0031] A sleeve length detection sensor is used to monitor the sleeve insertion or withdrawal length in real time.

[0032] The control system is connected to the sleeve length detection sensor, the vibratory impact device, and the sleeve pulling device, and is used to adjust the pulling speed, rotation angle, and vibratory impact time based on the detection data.

[0033] In some embodiments, the vibratory compaction equipment also includes a hole filling height monitoring radar, which is fixed to the column and faces the hole opening;

[0034] The control system is further configured to: when the rate of change of the top surface of the filler measured by the radar in the borehole is greater than the first preset threshold and the casing lifting rate is greater than the second preset threshold, immediately reduce the pipe pulling speed of the casing pulling device or suspend pipe pulling and replenish material to prevent pile breakage defects caused by failure to replenish filler in time.

[0035] In using the vibratory compaction equipment provided in this application embodiment, the vibratory compaction construction is carried out according to the following steps: lowering the vibratory compaction device into the casing to perform vibratory compaction to a specified depth, filling with crushed stone and compacting it with vibratory compaction, pulling out the casing and coordinating the filling with crushed stone and compaction, lifting the vibratory compaction device and moving the machine after pile completion. Compared with the prior art, the vibratory compaction equipment with this configuration integrates the two major processes of vibratory compaction and casing extraction into the same machine body. The casing is pulled out simultaneously during vibratory compaction, eliminating the need for multiple cross-operations, significantly improving the work efficiency of a single pile, and featuring good pile quality and high construction efficiency. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0037] Figure 1 This is a front view of the vibratory compaction device in the embodiments of this application.

[0038] Figure 2 This is a side view of the vibratory compaction device in an embodiment of this application.

[0039] Figure 3 for Figure 1 A partial structural diagram of the central guide hole device.

[0040] Figure 4 for Figure 1 A partial structural diagram of the lower sleeve assembly.

[0041] Figure 5 for Figure 1 A schematic diagram of the structure of the middle pull-out sleeve device.

[0042] Figure 6 for Figure 1 A schematic diagram of the lifting and retaining structure of the intermediate vibration impact device.

[0043] Figure 7 for Figure 1 A schematic diagram of the support and retainer structure of the mid-vibration impact device.

[0044] Figure 8 This is a schematic diagram of the vibratory compaction equipment in the working state of drilling and lowering the sleeve in the embodiments of this application.

[0045] Figure 9 for Figure 8 An enlarged schematic diagram of part A in the middle.

[0046] Figure 10 This is a schematic diagram of the vibratory compaction equipment in the working state of lifting the drill rod and separating the casing in the embodiments of this application.

[0047] Figure 11 for Figure 10 Enlarged diagram of part B.

[0048] Figure 12 This is a schematic diagram of the vibratory impact device switching from the first position to the second position in an embodiment of this application.

[0049] Figure 13This is a schematic diagram of the vibratory compaction equipment in the working state of lowering the vibratory compactor in the embodiment of this application.

[0050] Figure 14 for Figure 13 An enlarged schematic diagram of section C.

[0051] Figure 15 This is a schematic diagram of the vibratory compaction equipment in the working state when the vibratory compactor is lowered to a specified depth, as described in the embodiments of this application.

[0052] Figure 16 for Figure 15 An enlarged schematic diagram of part D in the middle.

[0053] Figure 17 This is a schematic diagram of the vibratory compaction equipment in the working state of filling and vibratory compaction in the embodiments of this application.

[0054] Figure 18 This is a schematic diagram of the vibratory compaction equipment in the working state of pulling out the sleeve and simultaneously compacting the packing material in the embodiment of this application.

[0055] Figure 19 for Figure 18 An enlarged schematic diagram of section E in the middle.

[0056] Figure 20 This is a schematic diagram of the vibratory compactor being lifted off the ground in the vibratory compaction equipment in this application embodiment.

[0057] in:

[0058] 1-First guide rail, 2-Goose head structure, 3-Second guide rail, 4-First traveling mechanism, 5-Body assembly, 6-Second traveling mechanism, 7-Main winch, 8-Counterweight assembly, 9-Control system, 10-Mast mechanism, 11-Diagonal brace assembly, 12-Inner power head, 13-Drill rod, 14-Outer power head, 15-Casing, 16-Drill bit, 17-Vibratory impactor, 18-Casing pull-out device, 19-Lifting retainer, 20-Guide rod, 21-Support retainer, 22-Pulley block, 23-Claw gripper, 24-First drive sleeve, 25-Rotating pair, 26-Drive assembly, 27-Second drive sleeve, 28-Clamping plate, 29-Pin cylinder. Detailed Implementation

[0059] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0060] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0061] Please see Figure 1 and Figure 2 The vibratory impact equipment provided in this application includes a machine body assembly 5, a vibratory impact device, and a tube pulling device 18 (also known as a tube rolling machine).

[0062] The fuselage assembly 5 is equipped with a column, and the column is equipped with a first guide rail 1.

[0063] Both the vibratory compaction device and the sleeve removal device 18 are vertically mounted on the first guide rail 1. The vibratory compaction device and the sleeve removal device 18 are inserted and cooperate with each other, and work together. The vibratory compaction device is used to vibrate the foundation, and the sleeve removal device 18 is used to remove the sleeve 15.

[0064] For example, the sleeve removal device 18 uses a rubbing motion to remove the sleeve 15.

[0065] For example, the purpose of removing the sleeve 15 can also be achieved by adding a vibrator, hydraulic hammer, or pile clamping box (static pressure machine).

[0066] In the process of using the vibratory compaction equipment provided in the embodiments of this application, the vibratory compaction construction is carried out in accordance with the following steps: lowering the vibratory compaction device into the casing to perform vibratory compaction to the specified depth - filling with crushed stone and compacting with vibratory compaction - pulling out the casing and filling with crushed stone and compacting with vibratory compaction in coordination - lifting the vibratory compaction device and completing the pile and moving the machine.

[0067] Compared with existing technologies, this type of vibratory compaction equipment integrates the two major processes of vibratory compaction and pipe extraction into the same machine body. During vibratory compaction, the pipe extraction is carried out in tandem, eliminating the need for multiple cross-operations. This significantly improves the work efficiency of a single pile and features high pile quality and high construction efficiency.

[0068] In some embodiments, the column is further provided with a second guide rail 3. The vibratory compaction equipment includes a pre-drilling device and a casing lowering device. Both the pre-drilling device and the casing lowering device are vertically and flexibly mounted on the second guide rail 3. The pre-drilling device is used to perform pre-drilling, and the casing lowering device is inserted and cooperates with the pre-drilling device. The casing lowering device is used to lower the casing 15, for example, by driving the casing 15 to rotate.

[0069] Of course, depending on actual needs, the aforementioned hole-reaming device, lower sleeve device, vibratory punching device and sleeve-pulling device 18 can all be slidably mounted on the first guide rail 1 via the gripper 23 to facilitate lifting and lowering movements.

[0070] In this way, the column adopts a double guide rail design, with the two guide rails at a certain angle, each equipped with different working devices to work together. From the driver's cab perspective, the equipment pile frame is equipped with a pre-drilling device and a lower sleeve device on the right front, and a vibratory compaction device and a sleeve extraction device on the left front.

[0071] For example, the axes of the second guide rail 3 and the first guide rail 1 are coplanar, and the center distance between the two guide rails is greater than the outer diameter of the maximum sleeve 15, so as to avoid spatial interference between the hole-drilling / sleeve-down 15 process and the vibratory punching / tube-pulling process.

[0072] The fuselage assembly 5 is configured to move between a first position and a second position, which are two positions in the left-right direction of the vehicle body. When the fuselage assembly 5 is in the first position, the drilling device and the lower sleeve device are in working state, and the vibratory impact device and the sleeve pulling device 18 are in non-working state; when the fuselage assembly 5 is switched to the second position, the vibratory impact device and the sleeve pulling device 18 are in working state, and the drilling device and the lower sleeve device are in non-working state.

[0073] In using the vibratory compaction equipment provided in this application embodiment, the construction is carried out according to the following steps: station positioning - pre-hole drilling - casing installation - station switching - vibratory compaction for hole deepening - segmented filling and compaction - synchronous pulse casing extraction - pile completion and machine relocation. Specifically, when the machine assembly 5 is in the first position, pre-hole drilling and casing installation are performed using the pre-hole drilling device and the casing installation device, respectively. When the machine assembly 5 is switched to the second position, the vibratory compaction device is used first to deepen the hole, followed by segmented filling and synchronous pulse casing extraction using the vibratory compaction device and the casing extraction device 18, respectively. Specifically:

[0074] Positioning: The machine body assembly 5 is in the first position, the equipment chassis moves, and the drill rod of the borehole device on the second guide rail 3 is aligned with the pile position.

[0075] Pre-drilling: The machine body assembly 5 is in the first position, the drill rod 13 passes through the lower casing device, and the drill bit 16 of the drill rod 13 drills to the designed depth, and the mud is continuously discharged through the spiral blades.

[0076] Lower sleeve 15: The machine body assembly 5 is in the first position. The lower sleeve device rotates the clamping head to clamp the sleeve 15, and presses it in while rotating, with full wall protection.

[0077] Workstation switching: The machine body assembly 5 switches from the first position to the second position, so that the vibratory compaction device on the first guide rail 1 is aligned with the pile position.

[0078] Vibratory punching for hole deepening: The machine body assembly 5 is in the second position, and the high-frequency vibratory punch 17 of the vibratory punching device penetrates through the hard layer / pebble layer and reaches the final depth.

[0079] Segmented packing compaction: The machine body assembly 5 is located in the second position, for example, to perform the feeding of crushed stone in 1.0m segments and compaction by vibratory compactor 17.

[0080] Synchronous pulse tube pulling: The machine body assembly 5 is in the second position, and the tube pulling device 18 rotates the tube head to coordinate with the vibration rhythm, pulling while vibrating.

[0081] After pile completion and machine relocation: The casing 15 is completely pulled out, the vibratory compactor 17 is lifted away from the hole, and the chassis of the machine body assembly 5 moves to the next pile position.

[0082] Compared to existing technologies, this type of vibratory compaction equipment integrates the four major processes of pre-drilling, casing installation, vibratory compaction, and casing extraction into a single machine body through dual guide rails and dual channels. It can complete the entire cycle of a single pile with only one workstation switch. It can simultaneously install the casing during pre-drilling and extract the casing during vibratory compaction, resulting in high pile quality and high construction efficiency.

[0083] In addition, the vibratory compaction equipment also includes a counterweight assembly 8, a mast mechanism 10, and a diagonal brace assembly 11. Among them, the counterweight assembly 8 acts as an anti-overturning balance weight, used to provide a counter-torque equal in magnitude and opposite in direction to the cantilever moment of the column, preventing the equipment from overturning; the mast mechanism 10 is used to realize the mast raising and lowering, verticality closed loop, and rapid station rotation; the diagonal brace assembly 11 is used to absorb high-frequency excitation reaction force and provide lateral stability.

[0084] Please refer to the following: Figure 4 The lower sleeve device includes an outer power head 14, which has a first hollow structure and is equipped with a first drive sleeve 24. The first drive sleeve 24 is used to connect the sleeve 15 to drive the sleeve 15 to rotate and realize the tube pulling.

[0085] Since the outer power head 14 is located below the inner power head 12 of the pilot hole device, the drill rod 13 of the pilot hole device passes through the first hollow structure of the outer power head 14 and enters the soil layer.

[0086] Please refer to the following: Figure 3 The pilot hole device includes an inner power head 12 and a drill rod 13. The inner power head 12 adopts a top drive design. The drill rod 13 is equipped with a drill bit 16 located at the bottom. The inner power head 12 is used to drive the drill rod 13 to drill into the pilot hole. The drill rod 13 is inserted and cooperates with the first hollow structure so that the drill rod 13 passes through the outer power head 14.

[0087] In addition, the inner power head 12 and the outer power head 14 are equipped with pulley blocks 22, which are driven to lift and lower by the winch wire rope that winds down through the goose-head structure 2. The inner power head 12 and the outer power head 14 are both connected to the guide rail on the column through the gripper 23, and can slide up and down.

[0088] Please refer to the following: Figure 5 The sleeve-pulling device 18 is provided with a second hollow structure for engaging with the vibratory impact device. Specifically, the sleeve-pulling device 18 includes an upper structure and a lower structure. The lower structure is connected to the upper structure via a rotating joint 25 (which may be a slewing bearing). The lower structure is provided with a drive assembly 26 and a second drive sleeve 27. The second drive sleeve 27 is used to connect the sleeve 15 and is driven by the drive assembly 26 to rub the sleeve 15.

[0089] Of course, the drive assembly 26 can be a hydraulic cylinder, which is hinged to the second drive sleeve 27. The extension and retraction of the hydraulic cylinder enables the second drive sleeve 27 to drive the sleeve 15 to rotate.

[0090] The upper structure of the pipe rolling machine is equipped with a pulley block 22, which is driven to lift and lower by the winch wire rope that winds down through the goose head structure 2. The upper structure of the pipe rolling machine is connected to the guide rail on the column through the gripper 23, and can slide up and down.

[0091] In some embodiments, the tube removal device 18 integrates an air injection component, which is connected to an external air source. The air injection rhythm of the air injection component is configured to be synchronized with the forward and reverse rotation cycle of the second drive sleeve 27. The air injection component is used to stop air injection when the second drive sleeve 27 rotates forward and to start air injection the instant the second drive sleeve 27 rotates in reverse.

[0092] It should be noted that in this embodiment, when the driving component 26 drives the second driving sleeve 27 to rotate forward, it is the lowering sleeve 15 process, and when the driving component 26 drives the second driving sleeve 27 to rotate in reverse, it is the pulling sleeve 15 process.

[0093] Based on the above, the air injection assembly includes a micro-perforated pressure relief pipe annularly arranged around the casing 15. The second drive sleeve 27 is set to compress the hole wall when rotating forward and unload the hole wall when rotating in reverse. Air injection is started instantaneously by rotating in reverse. For example, the reverse unloading generates a transient negative pressure of -5 to -15 kPa. External gas only needs to provide 0.05-0.1 MPa to "squeeze" into the crack. After the high-pressure microbubbles (0.1 mm level) enter the microcracks, the surface tension of the bubbles generates additional wedge stress, which further expands the cracks. After the cracks expand, the effective contact area of ​​the interface is reduced by more than 20%. In this way, the air pressure pulse can be used to further loosen the interface between the casing 15 and the soil layer, reducing the pipe pulling resistance by more than 20%.

[0094] In other words, by utilizing the coupling window of soil stress unloading, microcrack opening, and negative pressure suction during the instantaneous reversal of the pipe, high-pressure microbubbles are injected simultaneously using the air injection component. The bubbles wedge into the cracks and cover the steel wall, while reducing both adhesion and friction components. This results in a reduction of the total interfacial resistance by more than 20%, achieving efficient drag reduction by matching the "reversal-air" rhythm, which is beneficial for easy pipe removal.

[0095] Please refer to the following: Figure 6 and Figure 7 The vibratory device includes a vibrator 17 with a guide rod 20, a lifting retainer 19, and a support retainer 21. The guide rod 20 and the vibrator 17 are both inserted and cooperate with the second hollow structure. The vibrator 17 can provide high-frequency vibration. The lifting retainer 19 is slidably connected to the first guide rail 1. The lifting retainer 19 includes a locking plate 28 and a pin cylinder 29. The pin cylinder 29 is used to drive the locking plate 28 to fix the guide rod 20. The support retainer 21 is slidably connected to the first guide rail 1. The support retainer 21 is connected to the guide rod 20 by a flexible rope. The support retainer 21 is used to follow the rise and fall of the guide rod 20.

[0096] Specifically, the lifting retainer 19 is connected to the guide rail on the column via the gripper 23 and can slide up and down. The lifting retainer 19 is equipped with a pin-type hydraulic cylinder 29, which can drive the clamping plate 28 to fix the guide rod 20. The lifting retainer 19 is also equipped with a pulley block 22, which is driven to lift and lower by the winch wire rope that winds down through the gooseneck structure 2, thereby lifting and lowering the guide rod 20 and the vibratory impactor 17 for operation. Similarly, the support retainer 21 is connected to the guide rail on the column via the gripper 23 and can slide up and down. The support retainer 21 is equipped with a lifting point so that the support retainer 21 is connected to the top of the guide rod 20 via a flexible rope. The support retainer 21 moves up and down with the guide rod 20 to achieve the purpose of supporting the guide rod 20.

[0097] In some embodiments, the hole-reaming device, the lower sleeve device, the vibratory impact device, and the sleeve-pulling device 18 share the same lifting system, which includes a main winch 7, a gooseneck structure 2, and a pulley block 22.

[0098] The main winch 7 is mounted on the machine body assembly 5. The main winch 7 is used to control the lifting and lowering of the hole-reaming device, the lower sleeve device, the vibratory impact device, and the sleeve-pulling device 18. The goose-head structure 2 is mounted on the column. The hole-reaming device, the lower sleeve device, the vibratory impact device, or the sleeve-pulling device 18 are all equipped with pulley blocks 22. Each pulley block 22 is configured to be driven by the winch wire rope that winds down through the goose-head structure 2, so as to realize the lifting and lowering of each device.

[0099] In some embodiments, the device further includes a first traveling mechanism 4 (also called a longboat assembly) and a second traveling mechanism 6 (also called a shortboat assembly). The fuselage assembly 5 achieves left-right translation of the entire machine (e.g., translation between a first position and a second position) through the first traveling mechanism 4, and the fuselage assembly 5 achieves front-back translation of the entire machine through the second traveling mechanism 6.

[0100] In some embodiments, the device further includes a sleeve length detection sensor and a control system 9.

[0101] Among them, the sleeve length detection sensor is used to monitor the length of the sleeve 15 when it is inserted or pulled out in real time; the control system 9 is connected to the sleeve length detection sensor, the vibratory impact device and the sleeve pulling device 18, and the control system 9 is used to adjust the pulling speed, rotation angle and vibratory impact time according to the detection data.

[0102] Traditional methods rely on the "number of winch turns × rope diameter" for estimation, which is prone to pile breakage due to cumulative errors caused by pulley slippage and wire rope elongation. In contrast, the control system 9 calculates the volume of crushed stone feeding per unit length of pipe pulling in real time. If the volume of crushed stone feeding reaches the preset condition, the speed is immediately limited or the pulling is stopped, thereby reducing the probability of pile breakage. At the same time, the number of forward and reverse turns of the second drive sleeve 27 is linked to the pipe pulling per unit length. For example, the direction is forcibly switched every 0.5m to ensure uniform loosening of the soil interface, significantly reduce the pipe pulling resistance, and avoid deformation of the sleeve 15 caused by localized hard pulling. In addition, the duration of the vibration compaction current of the vibratory compactor 17 is linked to the pipe pulling per unit length to ensure that each meter of pile body reaches the design density and eliminate the blind spot of under-vibration quality.

[0103] In this way, the casing length detection sensor provides the control system 9 with millimeter-level true values, forming a three-closed loop of "how much to pull → how much to throw → how long to vibrate", which can significantly reduce the pile breakage rate, save materials, and improve the construction efficiency of single piles.

[0104] In some embodiments, the device further includes an in-hole filler height monitoring radar, which is fixed to a column (such as a first guide rail) and faces the orifice.

[0105] The control system 9 is further configured to: when the rate of change (specifically descent) of the top surface of the filler measured by the filler height monitoring radar in the borehole is greater than the first preset threshold A (e.g., 0.35 m / min) and the rate of lifting of the casing 15 is greater than the second preset threshold B (e.g., 0.50 m / min), immediately reduce the pulling speed of the casing pulling device 18 or suspend the pulling and replenish the material to prevent pile breakage defects caused by the failure to replenish the filler in time.

[0106] It is important to note that while the vibratory compactor 17 is compacting the stone material segment by segment within the hole, the casing 15 needs to be lifted. Taking a construction hole with a depth of 20m to 60m as an example, the operator cannot see the actual location of the crushed stone surface inside the hole. Traditionally, the casing is pulled based on experience, which leads to significant subjective errors. Once "pulling out > filling in," a negative pressure cavity appears in the hole segment, and the surrounding soft soil rushes in instantly, resulting in diameter reduction and pile breakage. At the same time, if the operator discovers "abnormal material feeding from the hopper" and stops pulling, it is already 30-60 seconds too late, and a cavity of 0.3-0.6m has already formed, making subsequent remedial measures ineffective.

[0107] For example, if the lifting speed of casing 15 v_c is greater than the falling speed of crushed stone v_f, a "cavity section" will appear in the hole; and once the cavity height is greater than 0.3-0.5m, the surrounding loose or saturated soil will be squeezed radially in, cutting off the continuous crushed stone and forming a "broken pile" or "reduced diameter" defect.

[0108] Therefore, this embodiment uses a radar to monitor the height of the filler material inside the borehole. The radar is fixed to the corresponding position on the first guide rail via a universal bracket, and is angled downwards at 15 degrees to the center of the borehole (to avoid obstruction by the sleeve 15). The radar is used to monitor the height of the filler material inside the borehole, and the control system 9 performs a judgment once per second.

[0109] If v_f > A and v_c > B;

[0110] This triggers Level 1 protection: immediately reduces the tube removal speed to 0.05 m / s;

[0111] If the above conditions are still met for 3 consecutive seconds;

[0112] Then the secondary protection is triggered: the tube pulling is paused and the forced feeding is started - the vibratory impactor 17 is raised by 0.3m, the feeding gate is opened for 5s, and then it is lowered to resume vibration until the cavity is eliminated.

[0113] In this way, by using non-contact radar at the orifice to monitor the top surface of the filler in real time, and using a closed-loop control of the pipe pulling with a dual threshold algorithm of "descent rate + extraction rate", the traditional "post-event detection of broken piles" is transformed into "pre-event prevention of cavities". The broken pile rate is reduced from the percent level to the thousand level, saving materials, eliminating rework, and providing core perception-decision integrated technology support for unmanned construction of ultra-deep vibratory compaction piles.

[0114] The construction process of the equipment is described in detail below:

[0115] Please refer to the following: Figure 8 and Figure 9 The inner power head 12 drives the drill rod 13 to rotate, and the outer power head 14 drives the casing 15 to rotate. The inner power head 12 and the outer power head 14 are simultaneously driven by the winch wire rope to lower to the designated drilling depth.

[0116] Please refer to the following: Figure 10 and Figure 11 The inner power head 12 drives the drill pipe 13 to rise, and after passing the casing 15, it separates the outer power head 14 from the casing 15.

[0117] Please refer to the following: Figure 12 The first traveling mechanism 4 moves horizontally, causing the machine body assembly 5 to switch to the second position. At this time, the hole is moved to the left side of the machine body to prepare for vibratory punching.

[0118] Please refer to the following: Figure 13 and Figure 14The lifting retainer 19 drives the guide rod 20 and the vibratory punch 17 to be lowered into the sleeve 15 to perform vibratory punching hole making operation.

[0119] Please refer to the following: Figure 15 and Figure 16 The retainer 19 is lifted and the guide rod 20 is replaced. The retainer is then lowered into the sleeve 20 for vibratory drilling until the specified depth is reached.

[0120] Please refer to the following: Figure 17 The lifting retainer 19 drives the guide rod 20 to lift, and the crushed stone is filled and compacted simultaneously.

[0121] Please refer to the following: Figure 18 and Figure 19 After the guide rod 20 is raised to a certain height, the sleeve pulling device 18 connects to the sleeve 15 and rotates synchronously. The lifting retainer 19 changes the guide rod 20's locking position and continues to lift. The sleeve pulling device 18 drives the sleeve 15 to lift synchronously, and at the same time, it fills the crushed stone material with vibratory compaction.

[0122] Please refer to the following: Figure 20 Until the vibratory compactor 17 is lifted off the ground and the crushed stone pile is formed, continue to lift the guide rod 20 to a certain height, and lower the sleeve removal device 18 and sleeve 15 multiple times to remove the sleeve 15 in sections, in preparation for the next work cycle.

[0123] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0124] The vibratory compaction equipment provided in this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the solution and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A vibratory compaction device, characterized in that, include: The fuselage assembly has a column on it, and the column is equipped with a first guide rail; A sleeve-pulling device is vertically mounted on the first guide rail and is used for pulling out sleeves; The vibratory compaction device is vertically mounted on the first guide rail and is inserted and cooperates with the sleeve removal device for vibratory compaction of the foundation. The sleeve removal device works in conjunction with the vibratory compaction device.

2. The vibratory compaction equipment as described in claim 1, characterized in that, The column is also equipped with a second guide rail, and the vibratory compaction equipment further includes: The lower sleeve device is vertically mounted on the second guide rail and is used to lower the sleeve. A pilot hole device is vertically mounted on the second guide rail and is fitted with the lower sleeve device for drilling pilot holes. The pilot hole device and the lower sleeve device work together. When the body assembly is in the first position, the hole-feeding device and the lower sleeve device are in working condition. When the body assembly is switched to the second position, the vibratory impact device and the sleeve-pulling device are in working condition.

3. The vibratory compaction equipment as described in claim 2, characterized in that, The lower sleeve device includes an outer power head, which has a first hollow structure and is equipped with a first drive sleeve. The first drive sleeve is used to connect to the sleeve to drive the sleeve to rotate.

4. The vibratory compaction equipment as described in claim 3, characterized in that, The pilot hole device includes an inner power head and a drill rod. The inner power head is used to drive the drill rod to drill into the pilot hole. The drill rod is inserted and engaged with the first hollow structure so that the drill rod passes through the outer power head.

5. The vibratory compaction equipment as described in claim 1, characterized in that, The tube-pulling device has a second hollow structure. The tube-pulling device includes an upper structure and a lower structure. The lower structure is connected to the upper structure through a rotating joint. The lower structure is provided with a driving component and a second driving sleeve. The second driving sleeve is used to connect the tube and is driven by the driving component to rub the tube.

6. The vibratory compaction equipment as described in claim 5, characterized in that, The vibratory impact device includes: A vibratory impactor with a guide rod, wherein both the guide rod and the vibratory impactor are inserted and fitted into the second hollow structure; The lifting retainer is slidably connected to the first guide rail and includes a locking plate and a pin cylinder. The pin cylinder is used to drive the locking plate to fix the guide rod. A support retainer is slidably connected to the first guide rail and connected to the guide rod via a flexible rope, for following the rise and fall of the guide rod.

7. The vibratory compaction equipment as described in claim 2, characterized in that, The hole-reaming device, the lower sleeve device, the vibratory impact device, and the sleeve-pulling device share the same lifting system, which includes: The main winch, located on the machine body assembly, is used to control the lifting and lowering of the hole-feeding device, the lower sleeve device, the vibratory impact device, and the sleeve-pulling device. A goose-head structure is provided on the column; The pulley block, located in the pre-hole device, the lower sleeve device, the vibratory impact device, and the sleeve-pulling device, is configured to be driven by a winch wire rope that winds down from the goose-head structure to achieve lifting and lowering.

8. The vibratory compaction equipment as described in claim 1, characterized in that, The vibratory impact equipment also includes a first traveling mechanism and a second traveling mechanism. The machine body assembly achieves left-right translation through the first traveling mechanism, and the machine body assembly achieves front-back translation through the second traveling mechanism.

9. The vibratory compaction equipment as described in any one of claims 1-8, characterized in that, The vibratory compaction equipment also includes: A sleeve length detection sensor is used to monitor the sleeve insertion or withdrawal length in real time. The control system is connected to the sleeve length detection sensor, the vibratory impact device, and the sleeve pulling device, and is used to adjust the pulling speed, rotation angle, and vibratory impact time according to the detection data.

10. The vibratory compaction equipment as described in claim 9, characterized in that, The vibratory compaction equipment also includes a hole filling height monitoring radar, which is fixed to the column and faces the hole opening; The control system is further configured to: when the rate of change of the top surface of the filler measured by the in-hole filler height monitoring radar is greater than a first preset threshold and the casing lifting rate is greater than a second preset threshold, immediately reduce the pipe pulling speed of the casing pulling device or suspend pipe pulling and replenish material to prevent pile breakage defects caused by failure to replenish filler in time.

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