A walking vibratory hammer pile driver for construction engineering

Abstract

This invention provides a walking vibratory hammer pile driver for construction engineering, relating to the field of vibratory pile driver technology. The walking vibratory hammer pile driver for construction engineering includes a walking excavator. A curved excavator cantilever is hinged to the end of the excavator's boom. An adjustable hammer vibrator is connected to the other end of the curved excavator cantilever via a flange. The adjustable hammer vibrator includes a connecting mechanism. A mounting mechanism is slidably connected to the bottom of the connecting mechanism. The mounting mechanism includes a telescopic mounting frame. Vibration mechanisms are slidably connected to both sides of the telescopic mounting frame. A pile fixing mechanism is fixedly connected to the bottom of the vibration mechanism. The pile fixing mechanism includes a connecting shell. This invention solves the problem of difficulty in implanting piles into hard obstacles encountered by existing excavator-modified static pressure pile drivers, and the adjustable hammer vibrator allows the pile driver to adapt to different soil conditions.

Description

Technical Field

[0001] This invention relates to the field of vibratory pile driver technology, specifically a walking vibratory hammer pile driver for building construction. Background Technology

[0002] In the construction industry, existing excavator-modified static pressure pile drivers play a crucial role. Their working principle is based on a vibration-assisted implantation mechanism. The pile driver is equipped with a vibratory motor installed at a specific location on the pile. When the motor is activated, it generates continuous and regular high-frequency vibrations. These vibrations are transmitted to the pile in the form of mechanical waves, causing the pile to interact with the surrounding soil under high-frequency oscillation. Due to the vibration, the previously relatively stable structure between soil particles on the outer side of the pile is disrupted, and the particles begin to shift relative to each other, causing the previously dense soil to temporarily fluidize. In this state, the lateral frictional resistance of the soil to the pile is significantly reduced, allowing the pile to be implanted more smoothly into the ground under its own weight and the pressure applied by the static pressure pile driver, greatly improving the efficiency of pile implantation.

[0003] While the excavator-modified static pressure pile driver is highly effective in conventional construction environments by fluidizing the soil around the pile, it reveals significant drawbacks under complex geological conditions. When facing soils with high viscosity and poor fluidity, such as clay areas with high plasticity, the strong cohesion between soil particles makes it difficult for the energy generated by the vibratory motor to break down the soil structure, hindering effective soil fluidization. This results in extremely high resistance during pile implantation, often leading to difficulties or even complete stagnation. Furthermore, when the pile encounters hard objects at its base, such as large boulders, remnants of old concrete foundations, or protruding hard rock layers, the strength of these objects far exceeds the capabilities of the pile and the vibration energy, preventing further advancement. In such cases, workers must stop the pile installation, remove the pile, and then use specialized equipment like hydraulic breakers to break up the hard object. This process is extremely tedious, time-consuming (each instance of dealing with the hard object and replanting the pile can take several hours), and labor-intensive. Furthermore, during the replanting of piles, the surrounding soil structure has changed due to the previous pile implantation, making it difficult to completely follow the original implantation path. This could potentially affect the final stability of the pile foundation and the quality of the entire construction project.

[0004] Based on the above viewpoints, those skilled in the art provide a walking vibratory pile driver for building engineering. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a walking vibratory hammer pile driver for construction engineering, which solves the problem of difficulty in implanting piles into hard obstacles when existing excavator-modified static pressure pile drivers encounter such obstacles. At the same time, the adjustable hammer vibrator allows the pile driver to adapt to different soil conditions.

[0006] Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a walking vibratory hammer pile driver for construction engineering, comprising a walking excavator, wherein a curved excavator cantilever is hinged to the end of the excavator arm, and an adjustable hammer vibrator is connected to the flange at the other end of the curved excavator cantilever. The adjustable hammer vibrator includes a connecting mechanism, and an installation mechanism is slidably connected to the bottom of the connecting mechanism. The installation mechanism includes a telescopic mounting frame, and a vibration mechanism is slidably connected to both sides of the telescopic mounting frame. A pile fixing mechanism is fixedly connected to the bottom of the vibration mechanism, and the pile fixing mechanism includes a connecting shell, wherein the center of the connecting shell is fixed. A pile placement pipe is connected, and several pressure rods are slidably connected inside the pipe wall. A connecting rod is fixedly connected to the bottom of the pressure rods, and a spring telescopic tube is fixedly connected to the other end of the connecting rod. The spring telescopic tubes are fixedly connected to the inner wall of the connecting shell. A hydraulic plate is provided above the pressure rods, and several wedge-shaped rods are provided on the lower side wall of the hydraulic plate. The wedge-shaped rods abut against the top wedge-shaped surfaces of the pressure rods. A liquid medium is provided between the hydraulic plate and the top wall of the connecting shell. A drain port is installed on the top of the connecting shell, and a drain hose is connected to the top port of the drain port. The drain hose is connected to an external water pump.

[0008] Preferably, the connecting mechanism includes a connecting flange, a connecting pipe is fixedly connected to the lower part of the connecting flange, a water pipe interface is installed on the outer side wall of the connecting pipe, and the top of the telescopic mounting bracket is slidably connected to the inside of the connecting pipe.

[0009] Preferably, the telescopic mounting frame has a limit frame fixedly connected to both side walls, and a spring plate is connected to the bottom of the limit frame by a spring. The vibration mechanism includes a vibration box, and an extrusion frame is fixedly connected to both side walls of the vibration box. The extrusion frame is disposed inside the limit frame and located below the spring plate. Sliding guide rails are installed at the four corners of the outer side wall of the telescopic mounting frame, and the outer side wall of the telescopic mounting frame is slidably connected to the groove of the sliding guide rail.

[0010] Preferably, a hydraulic motor is installed on the outer wall of the vibration box, and a motor pulley is connected to the output end of the hydraulic motor. Two rotating gears symmetrical to each other along the central axis of the vibration box are rotatably connected at the middle position of the vibration box. The two rotating gears are symmetrical to each other, and gear end pulleys are fixedly connected to the front ends of the two rotating gears. Several belts for transmission are sleeved on the outer side of the motor pulley and one of the gear end pulleys. An adjustable eccentric wheel is installed at the center of the front side wall of the two gear end pulleys.

[0011] Preferably, a connecting water pipe is fixedly connected to the top outer side of the rotating gear. The connecting water pipe communicates with the inner cavity of the limiting frame, and a liquid medium is provided in the inner cavity. A vibration monitoring combination pipeline is provided at the other end of the connecting water pipe. The vibration monitoring combination pipeline includes two external frames. A control valve is connected to the outer wall of the outermost external frame. A hydraulic piston rod is internally limited and slidably connected at the other end of the outermost external frame. The other end of the connecting water pipe is connected to the control valve. A right-angle bend is provided in the innermost external frame. A perforated plate is connected to the right-angle bend by a spring. An abutment piece is fixedly connected to the center of the outer wall of the perforated plate by a connecting rod. A trigger switch is provided between the perforated plate and the abutment piece. A damping medium is provided inside the right-angle bend and inside the abutment piece.

[0012] Preferably, the adjustable eccentric wheel includes a housing, inside which a plurality of spring eccentric plates arranged in a linear array are connected by springs, and an adjusting push rod is connected by springs at the center of the housing. A plurality of support rods are provided on the outer side wall of the adjusting push rod, and the upper side wall of the plurality of support rods and the bottom of the spring eccentric plates are provided with wedge-shaped surfaces that cooperate with each other. The end of the adjusting push rod is rotatably connected to the other end of a right-angle bend.

[0013] Preferably, a plurality of connecting rods are fixedly connected to the top of the hydraulic disc, and a pile-holding mechanism is fixedly connected to the other end of the plurality of connecting rods. The pile-holding mechanism includes a lifting disc, and a hammer rod assembly is rotatably connected to the center of the lifting disc. The hammer rod assembly includes a central hammer. Negative pressure grooves are provided on the front and rear sides of the lifting disc and the hammer rod assembly near the top. The negative pressure grooves are grooves that are wider on the outside and narrower on the inside. A negative pressure suction port communicating with the central hammer is provided inside the negative pressure groove and at the bottom of the negative pressure groove. A high-pressure air interface is provided at the lower part of the vibration box and at one end of the two negative pressure grooves. The high-pressure air interfaces are respectively provided at the left and right ends. Air blowing ports are provided on the front and rear sides of the vibration box. The air blowing ports, the high-pressure air interfaces and the negative pressure grooves are located on the same axis.

[0014] Preferably, a flow-type injection groove is provided on the outer wall of the lifting plate and below the negative pressure groove, and a spring hammer rod is connected inside the flow-type injection groove by a spring.

[0015] Preferably, a plurality of external blades are provided on the outer side wall of the central hammer and below the flow-type injection groove. An air injection groove is provided on the outer side wall of the lifting plate, and the air injection groove communicates with the chamber where the external blades are located. A pressure discharge groove is provided at the top of the chamber where the external blades are located. A connecting air pipe is fixedly connected to the top of the lifting plate and outside the top of the pressure discharge groove. The other end of the connecting air pipe is fixedly connected to the upper inner wall of the vibration box. A closed high-pressure nozzle is provided above the vibration box. The closed high-pressure nozzle includes a lifting rod fixing frame. A spring lifting rod is slidably connected inside the lifting rod fixing frame. A spring baffle is connected to the inner side wall of the lifting rod fixing frame by a spring. A sealing hole is provided on the spring baffle. An air blowing port is provided on the upper inner wall of the vibration box. The air blowing port communicates with the connecting air pipe. A wedge block is provided on the outer side wall of the spring lifting rod for pushing the spring baffle to move towards the air blowing port. Beneficial effects

[0016] This invention provides a walking vibratory hammer pile driver for construction engineering. It possesses the following technical features and beneficial effects:

[0017] While the pile is fixed inside the pile placement pipe by the pressure rod, the external turbine unit injects airflow into the negative pressure groove through the high-pressure air interface. Since the negative pressure suction port is located at the narrow throat of the negative pressure groove, when the high-speed airflow passes through the negative pressure groove, negative pressure is generated in the negative pressure suction port, which causes the bottom of the pile to be adsorbed, thus preventing the pile from detaching.

[0018] When the pile sinks into the soft clay or highly plastic clay layer, the extrusion frame approaches the top of the limiting frame. The water stored in the limiting frame is pressed into the vibration monitoring combination pipeline through the connecting water pipe, which in turn pushes the abutment plate to slide inward. The damping medium can push the adjusting push rod to the rearward. The support rod of the adjusting push rod drives the spring eccentric plate to slide outward, thereby increasing the eccentricity of the adjustable eccentric wheel. When the eccentricity increases, the amplitude of the adjustable eccentric wheel increases and the vibration frequency decreases. By using the low-frequency, high-amplitude vibration mode, the shear strain of the pile on the clay can be directly increased, avoiding the energy decay of low-frequency vibration too quickly, which would cause the vibration to be consumed too quickly.

[0019] When the pile encounters a hard object during its sinking process, the installation mechanism moves closer to the connecting mechanism, thereby increasing the travel of the vibration mechanism and increasing the impact force of the subsequent vibration mechanism on the pile. At the same time, the high-pressure gas injected into the air injection groove is discharged upward through the pressure relief groove and eventually accumulates in the air blowing port. When the vibration mechanism hammers downward, the spring lifting rod slides up and down relative to the vibration box due to inertia. At this time, the spring lifting rod pushes the spring baffle to move towards the air blowing port. At this time, the sealing hole coincides with the air blowing port, and the high-pressure gas is quickly ejected outward. The reaction force of the high-pressure gas further accelerates the hammering of the vibration mechanism, improving the overall efficiency of the pile in breaking through hard obstacles.

[0020] During the hammering process, the external blades rotate continuously due to the injection of high-pressure gas, causing the contact surface between the spring hammer rod and the top of the pile to change continuously. This prevents the pile from being damaged due to prolonged hammering. The high-pressure gas stored at the top of the spring hammer rod can further compress its own volume to convert the impact energy into heat energy, thereby protecting the pile. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a first schematic diagram of the adjustable hammer vibrator in this invention;

[0023] Figure 3 This is a second schematic diagram of the adjustable hammer vibrator in this invention;

[0024] Figure 4 This is a schematic diagram showing the hidden connection mechanism and part of the installation mechanism of the adjustable hammer vibrator in this invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the adjustable hammer vibrator vibration mechanism in this invention.

[0026] Figure 6 This is a longitudinal isometric side sectional view of the adjustable hammer vibrator in this invention, after concealing the connecting mechanism and part of the mounting mechanism.

[0027] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0028] Figure 8 This is a transverse isometric side sectional view of the adjustable hammer vibrator in this invention, after concealing the connecting mechanism and part of the mounting mechanism.

[0029] Figure 9 for Figure 8 Enlarged view of point B in the middle;

[0030] Figure 10This is an isometric side sectional view of the adjustable hammer vibrator in this invention, after concealing the connecting mechanism and part of the mounting mechanism.

[0031] Figure 11 for Figure 10 Enlarged view of point C in the middle;

[0032] Figure 12 This is a schematic diagram of the pile protection mechanism and the pile fixing mechanism in this invention;

[0033] Figure 13 This is a schematic diagram of the structure of the pile retaining mechanism and the pile fixing mechanism inside the vibration box in this invention;

[0034] Figure 14 This is an isometric side sectional view of the pile retaining mechanism and the pile fixing mechanism in this invention;

[0035] Figure 15 This is a schematic diagram of the flow-type injection groove inside the pile protection mechanism of the present invention;

[0036] Figure 16 This is a schematic diagram of the air injection groove inside the pile protection mechanism of the present invention;

[0037] Figure 17 This is a schematic diagram of the internal pressure relief groove of the pile protection mechanism in this invention;

[0038] Among them, 1. Walking excavator; 2. Cantilevered excavator boom; 3. Adjustable hammer vibrator;

[0039] 31. Connecting mechanism; 32. Installation mechanism; 33. Vibration mechanism; 34. Pile fixing mechanism; 35. High-pressure air interface; 36. Closed high-pressure nozzle; 37. Pile protection mechanism; 38. Connecting air pipe;

[0040] 311. Connecting flange; 312. Connecting pipe; 313. Water pipe interface;

[0041] 321. Telescopic mounting bracket; 322. Limiting bracket; 323. Sliding guide rail; 324. Connecting water pipe; 325. Spring plate;

[0042] 331. Vibration box; 332. Rotating gear; 333. Gear end pulley; 334. Adjustable eccentric wheel; 335. Hydraulic motor; 336. Vibration monitoring assembly pipeline; 337. Motor pulley; 338. Extrusion frame; 339. Air outlet;

[0043] 3341. Adjusting push rod; 3342. Outer casing; 3343. Spring eccentric plate;

[0044] 3361. Control valve; 3362. Hydraulic piston rod; 3363. Abutment plate; 3364. Trigger switch; 3365. Perforated plate; 3366. External bracket; 3367. Right-angle bend;

[0045] 341. Pile placement pipe; 342. Connecting shell; 343. Drainage port; 344. Drainage hose; 345. Spring telescopic tube; 346. Connecting rod; 347. Pressure rod; 348. Hydraulic disc; 349. Connecting rod;

[0046] 361. Lifting rod fixing bracket; 362. Spring lifting rod; 363. Spring baffle; 364. Sealing hole; 365. Air inlet;

[0047] 371. Lifting plate; 372. Negative pressure groove; 373. Flow-type pressure injection groove; 374. Air injection groove; 375. Hammer rod assembly; 376. Pressure discharge groove;

[0048] 3751, center hammer; 3752, negative pressure suction port; 3753, spring hammer rod; 3754, external blade. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] Example 1, as Figure 1 and Figure 2 As shown, this embodiment of the invention provides a walking vibratory hammer pile driver for construction engineering. The walking vibratory hammer pile driver includes a walking excavator 1. A curved excavator cantilever 2 is hinged to the end of the excavator arm of the walking excavator 1. An adjustable hammer vibrator 3 is connected to the other end of the curved excavator cantilever 2 via a flange. The adjustable hammer vibrator 3 includes a connecting mechanism 31, and an installation mechanism 32 is slidably connected to the bottom of the connecting mechanism 31. This excavator-to-pile driver utilizes a walking chassis to move on complex terrain. It primarily achieves machine stability on inclined and soft ground through four independently controlled hydraulic support legs. Simultaneously, the excavator arm can drive the adjustable hammer vibrator 3 to move freely, thereby enabling flexible pile implantation.

[0051] like Figure 2 , Figure 3 , Figure 12 and Figure 14As shown, the installation mechanism 32 includes a telescopic mounting frame 321. A vibration mechanism 33 is slidably connected to both sides of the telescopic mounting frame 321. A pile fixing mechanism 34 is fixedly connected to the bottom of the vibration mechanism 33. The pile fixing mechanism 34 includes a connecting housing 342. A pile placement tube 341 is fixedly connected to the center of the connecting housing 342. Several pressure rods 347 are slidably connected inside the wall of the pile placement tube 341. A connecting rod 346 is fixedly connected to the bottom of the pressure rods 347. A spring is fixedly connected to the other end of the connecting rod 346. Telescopic tubes 345 and several spring telescopic tubes 345 are fixedly connected to the inner wall of the connecting housing 342. A hydraulic plate 348 is provided above several pressure rods 347. Several wedge-shaped rods are provided on the lower side wall of the hydraulic plate 348, and the wedge-shaped rods abut against the top wedge-shaped surfaces of the pressure rods 347. A liquid medium is provided between the hydraulic plate 348 and the top wall of the connecting housing 342. A drain port 343 is installed on the top of the connecting housing 342. A drain hose 344 is connected to the top port of the drain port 343 and is connected to an external water pump.

[0052] like Figure 3 As shown, the connecting mechanism 31 includes a connecting flange 311, a connecting pipe 312 is fixedly connected to the lower part of the connecting flange 311, a water pipe interface 313 is installed on the outer side wall of the connecting pipe 312, the top of the telescopic mounting bracket 321 is slidably connected to the inside of the connecting pipe 312, the two side walls of the telescopic mounting bracket 321 are fixedly connected to the limiting bracket 322, and the bottom of the limiting bracket 322 is connected to the spring plate 325 by a spring. The vibration mechanism 33 includes a vibration box 331, the two side walls of the vibration box 331 are fixedly connected to the extrusion bracket 338, the extrusion bracket 338 is set inside the limiting bracket 322 and located below the spring plate 325, and the four corners of the outer side wall of the telescopic mounting bracket 321 are equipped with sliding guide rails 323, and the outer side wall of the telescopic mounting bracket 321 is slidably connected to the groove of the sliding guide rail 323.

[0053] like Figures 5 to 9 As shown, a hydraulic motor 335 is installed on the outer wall of the vibration box 331. A motor pulley 337 is connected to the output end of the hydraulic motor 335. Two rotating gears 332, which are symmetrical about each other along the central axis of the vibration box 331, are rotatably connected at the middle position of the vibration box 331. The two rotating gears 332 are symmetrical about each other. Gear end pulleys 333 are fixedly connected to the front ends of the two rotating gears 332. Several belts for transmission are sleeved on the outer side of the motor pulley 337 and one of the gear end pulleys 333. An adjustable eccentric wheel 334 is installed at the center of the front side wall of the two gear end pulleys 333.

[0054] like Figures 6 to 9As shown, a connecting water pipe 324 is fixedly connected to the top outer side of the rotating gear 332. The connecting water pipe 324 communicates with the inner cavity of the limiting frame 322, and the inner cavity is filled with a liquid medium. A vibration monitoring combined pipeline 336 is provided at the other end of the connecting water pipe 324. The vibration monitoring combined pipeline 336 includes two external brackets 3366. A control valve 3361 is connected to the outer wall of the outer bracket 3366. A hydraulic piston rod 3362 is internally limited and slidably connected at the other end of the outer bracket 3366. The other end of the connecting water pipe 324 is connected to the control valve 3361. A right-angle bend 3367 is provided inside the inner external bracket 3366. A perforated plate 3365 is connected to the right-angle bend 3367 through a spring. The perforated plate 3365 is externally connected to the outer wall of the inner external bracket 3366. A contact plate 3363 is fixedly connected to the center of the side wall via a connecting rod. A trigger switch 3364 is provided between the perforated plate 3365 and the contact plate 3363. A damping medium is provided inside the right-angle bend 3367 and inside the contact plate 3363. The adjustable eccentric wheel 334 includes a housing 3342. Several spring eccentric plates 3343 arranged in a linear array are connected inside the housing 3342 via springs. An adjusting push rod 3341 is connected to the center of the housing 3342 via a spring. Several support rods are provided on the outer side wall of the adjusting push rod 3341. The upper side wall of the several support rods and the bottom of the spring eccentric plates 3343 are provided with wedge-shaped surfaces that cooperate with each other. The end of the adjusting push rod 3341 is rotatably connected to the other end of the right-angle bend 3367.

[0055] Example 2, as Figures 12 to 14As shown, this embodiment provides another technical solution based on Embodiment 1. A plurality of connecting rods 349 are fixedly connected to the top of the hydraulic disc 348. The other ends of the connecting rods 349 are fixedly connected to a pile-holding mechanism 37. The pile-holding mechanism 37 includes a lifting disc 371. A hammer rod assembly 375 is rotatably connected to the center of the lifting disc 371. The hammer rod assembly 375 includes a central hammer 3751. Negative pressure grooves 372 are provided on the front and rear sides of the lifting disc 371 and the hammer rod assembly 375 near the top. 372 is a groove shape that is wider on the outside and narrower on the inside. A negative pressure suction port 3752, communicating with the center hammer 3751, is located inside and at the bottom of the negative pressure groove 372. A high-pressure air interface 35 is located at the lower part of the vibration box 331, at one end of each of the two negative pressure grooves 372. The high-pressure air interfaces 35 are located at the left and right ends respectively. Air blowing ports 339 are located on the front and rear sides of the vibration box 331. The air blowing ports 339, the high-pressure air interfaces 35, and the negative pressure grooves 372 are located on the same axis. A water pump delivers water through a drain hose 344. The water stored in the connecting housing 342 is extracted, causing the hydraulic plate 348 to rise. The rising hydraulic plate 348 not only moves the pressure rod 347 away from the pile, thus releasing the pile from the device, but also, through the connecting rod 349, drives the lifting plate 371 to rise. As the lifting plate 371 rises, the flowing injection channel 373 passes through the high-pressure air interface 35, injecting high-pressure gas into the area above the spring hammer rod 3753. This high-pressure gas then drives the spring hammer rod 3753. The pressure is deformed downwards. When the flow-type injection groove 373 is completely separated from the high-pressure gas interface 35, the high-pressure gas stored in the spring hammer rod 3753 will not escape because the lifting plate 371 is in contact with the inner wall of the vibration box 331. As the lifting plate 371 rises further until the air injection groove 374 is flush with the high-pressure gas interface 35, the high-pressure gas passes through the air injection groove 374 and drives the external blade 3754 to start rotating. At this time, when the vibration mechanism 33 vibrates up and down, it will slide along the direction of the sliding guide rail 323.

[0056] like Figures 12 to 17As shown, a flow-type injection groove 373 is provided on the outer wall of the lifting plate 371 and below the negative pressure groove 372. A spring hammer rod 3753 is connected to the inside of the flow-type injection groove 373 via a spring. Several external blades 3754 are provided on the outer wall of the center hammer 3751 and below the flow-type injection groove 373. An air injection groove 374 is provided on the outer wall of the lifting plate 371, communicating with the chamber where the external blades 3754 are located. A pressure discharge groove 376 is provided at the top of the chamber where the external blades 3754 are located. A connecting air pipe 38 is fixedly connected to the top of the 71 and to the outer side of the top of the pressure relief groove 376. The other end of the connecting air pipe 38 is fixedly connected to the upper inner wall of the vibration box 331. A closed high-pressure nozzle 36 is provided above the vibration box 331. The closed high-pressure nozzle 36 includes a lifting rod fixing frame 361. A spring lifting rod 362 is slidably connected inside the lifting rod fixing frame 361. A spring baffle 363 is connected to the inner side wall of the lifting rod fixing frame 361 by a spring. A sealing hole 364 is opened on the spring baffle 363. The upper inner wall of the vibration box 331... An air inlet 365 is provided on the wall, which is connected to a connecting air pipe 38. A wedge-shaped block is provided on the outer wall of the spring lifting rod 362 to push the spring baffle 363 towards the air inlet 365. During the hammering process, due to the injection of high-pressure gas, the external blade 3754 rotates continuously, causing the contact surface between the spring hammer rod 3753 and the top of the pile to change continuously, thus preventing the pile from being damaged due to prolonged hammering. The high-pressure gas stored at the top of the spring hammer rod 3753 can further compress its own volume to transfer the impact force. The high-pressure gas is converted into heat energy, thus protecting the pile body. At the same time, the high-pressure gas injected into the air injection groove 374 is discharged upward through the pressure relief groove 376 and finally accumulates in the air blowing port 365. When the vibration mechanism 33 hammers downward, the spring lifting rod 362 slides up and down relative to the vibration box 331 due to inertia. At this time, the spring lifting rod 362 pushes the spring baffle 363 to move towards the air blowing port 365. At this time, the sealing hole 364 coincides with the air blowing port 365, and the high-pressure gas is quickly ejected outward. Then, the reaction force of the high-pressure gas further accelerates the hammering of the vibration mechanism 33.

[0057] Working Principle: This excavator-to-pile machine utilizes a walking chassis to move across complex terrain. It primarily achieves stability on sloping or soft ground through four independently controlled hydraulic support legs. Simultaneously, the excavator arm can move freely along an adjustable hammer vibrator 3, enabling flexible pile insertion. At the end of the excavator arm, a curved cantilever 2 can withstand high-frequency vibrations and impacts. The pile fixing mechanism 34 binds the pile to the adjustable hammer vibrator 3. An external water pump injects water into the connecting housing 342, pushing the hydraulic disc 348 downwards. This, in turn, utilizes a wedge-shaped rod beneath the hydraulic disc 348 to apply pressure. The rod 347 moves inward to fix the pile in the pile placement tube 341. At the same time, the external turbine unit injects airflow into the negative pressure groove 372 through the high-pressure air interface 35. Since the negative pressure suction port 3752 is located at the narrow throat of the negative pressure groove 372, when the high-speed airflow passes through the negative pressure groove 372, a negative pressure is generated in the negative pressure suction port 3752, which causes the bottom of the pile to be attracted, preventing the pile from being loosened by vibration. At the same time, the high-pressure air interface 35 is set on the left and right sides of the vibration box 331, and the high-pressure air discharged from its exhaust port is symmetrical, which balances the reaction force of the high-pressure air and prevents the high-pressure air from causing the adjustable hammer vibrator 3 to move laterally.

[0058] The vibration mechanism 33 is used to drive the pile body to vibrate. When the output end of the air outlet 339 rotates, the motor pulley 337 connected to its movable end drives the rotating gear 332 on one side to rotate via the belt. The two rotating gears 332 mesh with each other, so the other set of rotating gears 332 rotates in the opposite direction, thereby driving the two sets of adjustable eccentric wheels 334 in front to rotate in the opposite direction. The left and right swings generated by the two sets of adjustable eccentric wheels 334 are balanced, avoiding lateral swaying of the machine body. The periodic centrifugal force generated by the two sets of adjustable eccentric wheels 334 will drive the vibration mechanism 33 and the pile body inside the pile body fixing mechanism 34 to vibrate synchronously. The vibration reduces the friction between soil particles around the pile, and may even cause liquefaction, similar to quicksand, significantly reducing the pile driving resistance. However, when the pile body sinks into soft clay or high plastic clay layer, due to the poor permeability of such soil, the vibration... Kinetic energy is difficult to diffuse quickly. At this time, the amplitude generated by the adjustable hammer vibrator 3 decreases, the pile sinking speed slows down, and the excavator arm continues to descend. The extrusion frame 338 approaches the top of the limit frame 322. The water stored in the limit frame 322 is pressed into the vibration monitoring combination pipeline 336 through the connecting water pipe 324, which in turn pushes the abutment plate 3363 to slide inward. The damping medium can push the adjusting push rod 3341 to the rear. The support rod of the adjusting push rod 3341 drives the spring eccentric plate 3343 to slide outward, which increases the eccentricity of the adjustable eccentric wheel 334. When the eccentricity increases, the amplitude of the adjustable eccentric wheel 334 increases and the vibration frequency decreases. By using the low frequency and high amplitude vibration mode, the shear strain of the pile on the clay can be directly increased, avoiding the energy decay of low frequency vibration too quickly and the vibration being consumed too quickly.

[0059] It should also be noted that the spring connecting the eccentric plate 3343 is made of high-strength material. Therefore, when the adjustable eccentric wheel 334 rotates as a whole, the spring will not deform, causing the eccentricity of the adjustable eccentric wheel 334 to passively increase. At the same time, the damping medium stored in the right-angle bend 3367 can prevent the spring from driving the perforated plate 3365 and the abutment plate 3363 to reset quickly. The small holes on the perforated plate 3365 allow the damping medium to flow through. The viscous force of the damping medium can significantly slow down the reset speed of the trigger switch 3364. The delayed reset characteristic allows the abutment plate 3363 to better sense the vibration changes of the next cycle.

[0060] When the pile encounters a hard object during its sinking process, the pile and the vibration mechanism 33 cannot vibrate downwards. The squeezing frame 338 rapidly approaches the top of the limiting frame 322, causing a large amount of water stored in the limiting frame 322 to rush into the vibration monitoring combination pipeline 336. The abutment piece 3363 quickly slides inwards and contacts the trigger switch 3364. When the trigger switch 3364 is triggered, it will send a signal to the external controller. The controller controls the valve 3361 to close, so that the liquid medium no longer flows back into the limiting frame 322. At the same time, the controller controls the water pump to draw back the water originally stored in the connecting pipe 312 and the connecting shell 342 through the water pipe interface 313 and the drain interface 343. This causes the installation mechanism 32 to move closer to the connecting mechanism 31, thereby increasing the travel of the vibration mechanism 33 and increasing the impact force of the subsequent vibration mechanism 33 on the pile.

[0061] Simultaneously, the water pump draws out the water stored in the connecting housing 342 through the drain hose 344, causing the hydraulic plate 348 to rise. The rising hydraulic plate 348 not only moves the pressure rod 347 away from the pile body, thus releasing the pile body from the device, but also, through the connecting rod 349, drives the lifting plate 371 to rise as well. As the lifting plate 371 rises, the flowing injection groove 373 passes through the high-pressure air interface 35. At this time, high-pressure gas is injected above the spring hammer rod 3753 through the flowing injection groove 373, causing the spring hammer rod 3753 to deform downwards. When the flowing injection groove 373 completely leaves the high-pressure air interface 35, because the lifting plate 371 is in contact with the inner wall of the vibration box 331, the water stored in the spring hammer rod 3753... The high-pressure gas will not escape. As the lifting plate 371 rises further until the air injection groove 374 is flush with the high-pressure gas interface 35, the high-pressure gas passes through the air injection groove 374 and drives the external blade 3754 to start rotating. At this time, when the vibration mechanism 33 vibrates up and down, it will slide along the direction of the sliding guide rail 323 and continuously hammer the top of the pile. During the hammering process, due to the injection of high-pressure gas, the external blade 3754 rotates continuously, causing the contact surface between the spring hammer rod 3753 and the top of the pile to change continuously, preventing the pile from being damaged due to prolonged hammering. The high-pressure gas stored at the top of the spring hammer rod 3753 can further compress its own volume to convert the impact energy into heat energy, thereby protecting the pile.

[0062] Simultaneously, the high-pressure gas injected into the air injection groove 374 is discharged upward through the pressure relief groove 376 and eventually accumulates in the air blowing port 365. When the vibration mechanism 33 hammers downward, the spring lifting rod 362 slides up and down relative to the vibration box 331 due to inertia. At this time, the spring lifting rod 362 pushes the spring baffle 363 to move towards the air blowing port 365. At this time, the sealing hole 364 coincides with the air blowing port 365, and the high-pressure gas is quickly ejected outward. Then, the reaction force of the high-pressure gas further accelerates the hammering of the vibration mechanism 33, improving the overall efficiency of the pile in breaking hard obstacles.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A walking vibratory hammer pile driver for construction engineering, comprising a walking excavator (1), characterized in that, The walking excavator (1) has a curved excavator boom (2) hinged at the end of its arm. An adjustable hammer vibrator (3) is connected to the flange at the other end of the curved excavator boom (2). The adjustable hammer vibrator (3) includes a connecting mechanism (31). A mounting mechanism (32) is slidably connected to the bottom of the connecting mechanism (31). The mounting mechanism (32) includes a telescopic mounting frame (321). Vibration mechanisms (33) are slidably connected to both sides of the telescopic mounting frame (321). A pile fixing mechanism (34) is fixedly connected to the bottom of the vibration mechanism (33). The pile fixing mechanism (34) includes a connecting shell (342). A pile placement pipe (341) is fixedly connected to the center of the connecting shell (342). Several additional components are slidably connected inside the pipe wall of the pile placement pipe (341). A pressure rod (347) is fixedly connected to the bottom of several pressure rods (347), and a spring telescopic tube (345) is fixedly connected to the other end of the connecting rod (346). Several spring telescopic tubes (345) are fixedly connected to the inner wall of the connecting shell (342). A hydraulic plate (348) is provided above several pressure rods (347). Several wedge-shaped rods are provided on the lower side wall of the hydraulic plate (348), and the wedge-shaped rods abut against the top wedge-shaped surface of the pressure rods (347). A liquid medium is provided between the hydraulic plate (348) and the top wall of the connecting shell (342). A drain port (343) is installed on the top of the connecting shell (342). A drain hose (344) is connected to the top port of the drain port (343), and the drain hose (344) is connected to an external water pump. The telescopic mounting bracket (321) has a limit frame (322) fixedly connected to both sides of the side walls. The bottom of the limit frame (322) is connected to a spring plate (325) by a spring. The vibration mechanism (33) includes a vibration box (331). The side walls of the vibration box (331) are fixedly connected to an extrusion frame (338). The extrusion frame (338) is located inside the limit frame (322) and below the spring plate (325). The four corners of the outer side wall of the telescopic mounting bracket (321) are equipped with sliding guide rails (323). The outer side wall of the telescopic mounting bracket (321) is slidably connected to the groove of the sliding guide rail (323). A hydraulic motor (335) is installed on the outer wall of the vibration box (331). A motor pulley (337) is connected to the output end of the hydraulic motor (335). Two rotating gears (332) are rotatably connected to the middle position of the vibration box (331) and are symmetrical about each other along the central axis of the vibration box (331). The two rotating gears (332) are symmetrical about each other. The front ends of the two rotating gears (332) are fixedly connected to gear end pulleys (333). Several belts for transmission are sleeved on the outer side of the motor pulley (337) and one of the gear end pulleys (333). An adjustable eccentric wheel (334) is installed at the center of the front side wall of the two gear end pulleys (333). The adjustable eccentric wheel (334) includes a housing (3342). Inside the housing (3342), a plurality of spring eccentric plates (3343) arranged in a linear array are connected by springs. At the center of the housing (3342), an adjusting push rod (3341) is connected by springs. A plurality of support rods are provided on the outer side wall of the adjusting push rod (3341). The upper side wall of the plurality of support rods and the bottom of the spring eccentric plates (3343) are provided with wedge-shaped surfaces that cooperate with each other. The end of the adjusting push rod (3341) is rotatably connected to the other end of the right-angle bend (3367).

2. The walking vibratory hammer pile driver for construction engineering according to claim 1, characterized in that, The connecting mechanism (31) includes a connecting flange (311), a connecting pipe (312) is fixedly connected to the lower part of the connecting flange (311), a water pipe interface (313) is installed on the outer side wall of the connecting pipe (312), and the top of the telescopic mounting bracket (321) is slidably connected to the inside of the connecting pipe (312).

3. A walking vibratory hammer pile driver for construction engineering according to claim 2, characterized in that, A connecting water pipe (324) is fixedly connected to the top outer side of the rotating gear (332). The connecting water pipe (324) is connected to the inner cavity of the limiting frame (322), and the inner cavity is filled with a liquid medium. A vibration monitoring combination pipeline (336) is provided at the other end of the connecting water pipe (324). The vibration monitoring combination pipeline (336) includes two external brackets (3366). A control valve (3361) is connected to the outer wall of the outer bracket (3366) on the outer side. A hydraulic piston rod (3362) is internally limited and slidably connected to the other end of the outer bracket (3366). The other end of the connecting water pipe (324) is connected to the control valve (3361). A right-angle bend (3367) is provided in the outer frame (3366) on the inner side. A perforated plate (3365) is connected to the right-angle bend (3367) by a spring. An abutment piece (3363) is fixedly connected to the center of the outer wall of the perforated plate (3365) by a connecting rod. A trigger switch (3364) is provided between the perforated plate (3365) and the abutment piece (3363). A damping medium is provided inside the right-angle bend (3367) and inside the abutment piece (3363).

4. A walking vibratory hammer pile driver for construction engineering according to claim 1, characterized in that, The top of the hydraulic disc (348) is fixedly connected to several connecting rods (349), and the other end of the connecting rods (349) is fixedly connected to a pile-holding mechanism (37). The pile-holding mechanism (37) includes a lifting disc (371), and a hammer rod assembly (375) is rotatably connected to the center of the lifting disc (371). The hammer rod assembly (375) includes a central hammer (3751). Negative pressure grooves (372) are provided on the front and rear sides of the lifting disc (371) and the hammer rod assembly (375) near the top. The negative pressure grooves (372) are for... The groove is wider on the outside and narrower on the inside. The center hammer (3751) has a negative pressure suction port (3752) connected to it at the bottom of the negative pressure groove (372). The vibration box (331) is provided with a high-pressure air interface (35) at the lower position and at one end of the two negative pressure grooves (372). The high-pressure air interface (35) is respectively provided at the left and right ends. The vibration box (331) has air blowing ports (339) on the front and rear sides. The air blowing ports (339), the high-pressure air interface (35) and the negative pressure groove (372) are located on the same axis.

5. A walking vibratory hammer pile driver for construction engineering according to claim 4, characterized in that, A flowable injection groove (373) is provided on the outer wall of the lifting plate (371) and below the negative pressure groove (372), and a spring hammer rod (3753) is connected inside the flowable injection groove (373) by a spring.

6. A walking vibratory hammer pile driver for construction engineering according to claim 5, characterized in that, Several external blades (3754) are provided on the outer wall of the central hammer (3751) and below the flow-type injection groove (373). An air injection groove (374) is provided on the outer wall of the lifting plate (371). The air injection groove (374) is connected to the chamber where the external blades (3754) are located. A pressure discharge groove (376) is provided at the top of the chamber where the external blades (3754) are located. A connecting air pipe (38) is fixedly connected to the top of the lifting plate (371) and outside the top of the pressure discharge groove (376). The other end of the connecting air pipe (38) is fixedly connected to the upper inner wall of the vibration box (331). A sealing device is provided above the vibration box (331). A closed high-pressure nozzle (36) includes a lifting rod fixing frame (361), a spring lifting rod (362) is internally limited and slidably connected to the lifting rod fixing frame (361), a spring baffle (363) is connected to the inner side wall of the lifting rod fixing frame (361) by a spring, a sealing hole (364) is opened on the spring baffle (363), an air blowing port (365) is opened on the upper inner wall of the vibration box (331), the air blowing port (365) is connected to the connecting air pipe (38), and a wedge block is provided on the outer side wall of the spring lifting rod (362) for pushing the spring baffle (363) to move towards the air blowing port (365).

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