Two-dimensional dynamic strong coupling driving high-efficiency environment-friendly vibration pile hammer
By using a two-dimensional dynamic strongly coupled vibratory pile hammer, which adopts a composite mode of linear and torsional vibration, the problems of insufficient pile depth, low efficiency and large environmental impact of existing vibratory pile hammers are solved, and efficient and environmentally friendly pile foundation construction is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 沈阳伟腾科技有限公司
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-07
AI Technical Summary
The existing unidirectional drive method of vibratory pile hammers results in insufficient pile depth, low efficiency, high cost, high noise, and serious environmental impact, especially in hard soil and marine environments.
A two-dimensional dynamic strong coupling drive method is adopted. Multiple rotating shafts and an eccentric rotor generate a composite vibration mode of linear and torsional vibration, which redistributes the coupled friction force between the pile and the soil, thereby realizing two-dimensional dynamic drive.
It improves the penetration rate and efficiency of piles, reduces engineering costs and noise, and protects the environment, especially showing significant high efficiency and environmental protection effects in hard soil and marine environments.
Smart Images
Figure CN224468373U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vibratory pile driving (extraction) technology, and in particular to a two-dimensional dynamic strong coupling driven high-efficiency and environmentally friendly vibratory pile hammer. Background Technology
[0002] The application of pile foundations in various construction projects is becoming increasingly widespread, and vibratory pile hammers (including vibratory pile driving and vibratory pile extraction functions), as an indispensable pile foundation construction equipment, are bound to be used more and more extensively. Especially for wind power and photovoltaic projects in deserts, tidal flats, or mountains, as well as infrastructure construction projects such as buildings, roads, bridges, and airports, and construction projects such as offshore wind power or offshore operation platforms, the first step in the construction of these projects is the pile driving process, and the subsequent dismantling process requires the pile extraction process.
[0003] As the core equipment in vibratory pile driving / extraction technology, the performance of the vibratory pile hammer directly affects the efficiency and quality of pile driving / extraction. Existing conventional pile driving procedures are generally divided into hydraulically driven static pressure pile driving, impact pile driving, and vibratory pile driving. Among these, vibratory pile driving is the most common. The basic principle of most traditional vibratory pile driving or extraction methods involving vibratory pile hammers is: to generate a single-direction excitation force through a single exciter (i.e., an eccentric rotor driven by a power source such as a motor / hydraulic / pneumatic power source) or multiple exciters, thereby driving the vibratory pile hammer and pile to achieve linear vibration in a single direction. In other words, traditional pile driving and extraction methods all use one-dimensional power, achieving the vibratory pile driving and extraction function solely through a single-direction linear vibration trajectory. Research and practice have shown that this driving method has the following shortcomings:
[0004] 1) The pile depth cannot meet the project requirements;
[0005] 2) The overall efficiency of the piling process is low (i.e., the pile penetration rate is too low).
[0006] 3) Piles driven using conventional vibratory piling technology are difficult to extract later;
[0007] 4) High piling costs (e.g., most photovoltaic piles in the desert must be filled with water before they can be driven to the required depth).
[0008] 5) Piling is more difficult in hard soil conditions;
[0009] 6) High power consumption;
[0010] 7) The pile itself is prone to deformation / damage;
[0011] 8) The dynamic load and noise transmitted to the surrounding environment of the pile are large (for onshore pile driving, it affects the health of surrounding residents or the safety of surrounding buildings or operating equipment; for offshore pile driving, it affects the health and reproduction of marine life).
[0012] To address the shortcomings of existing technologies, this invention proposes a two-dimensional dynamic strongly coupled high-efficiency and environmentally friendly vibratory pile hammer. This invention aims to achieve high efficiency, high quality, environmental friendliness, noise reduction, pile protection, energy saving, and easy pile extraction in pile foundation operations by innovating the vibration mode (using two-dimensional dynamic drive) and redistributing the coupled frictional force vector between the pile and soil. This provides a completely new solution for pile foundation engineering. Utility Model Content
[0013] Based on the shortcomings of existing technologies, this utility model proposes a two-dimensional dynamic strongly coupled drive high-efficiency and environmentally friendly vibratory pile hammer.
[0014] The technical solution of this utility model is as follows: a two-dimensional power strongly coupled drive high efficiency and environmentally friendly vibratory pile hammer, including multiple rotating shafts and an eccentric rotor, arranged in the vibratory hammer body, and the pile body is rigidly connected to the vibratory hammer body;
[0015] There are two types of rotating shafts: the first type has an eccentric rotor arranged at its center; the second type has three eccentric rotors arranged on its shaft, with one eccentric rotor at its center and one eccentric rotor at each end. The eccentric rotors at both ends of the same second type of rotating shaft have the same moment of mass and a phase difference of 180°. The phase difference between the eccentric rotor at the center of the second type of rotating shaft and the eccentric rotors at both ends is 0-180°.
[0016] The rotating shaft is composed of multiple second-type rotating shafts or a combination of first-type and second-type rotating shafts;
[0017] The rotating shafts rotate synchronously through a strong coupling mechanism, generating linear vibration excitation force along the axial direction of the vibratory hammer body and torsional vibration excitation force around the circumferential direction of the vibratory hammer body axis.
[0018] The direction of the linear vibration excitation force is perpendicular to the plane containing the couple of the torsional vibration excitation force; the plane containing the couple of the torsional vibration excitation force is perpendicular to the axis of the vibrating hammer body, and the axis of the vibrating hammer body passes through the center point of the plane containing the couple of the torsional vibration excitation force.
[0019] The excitation force for linear vibration is a low-frequency large amplitude or a high-frequency small amplitude; the excitation force for torsional vibration is a low-frequency large amplitude or a high-frequency small amplitude.
[0020] The combination of the first type of rotating shaft and the second type of rotating shaft includes one first type of rotating shaft and two second type of rotating shafts. The three rotating shafts are arranged in parallel and are located in the same vertical plane. The eccentric rotors on the three rotating shafts are symmetrically arranged about the axis of the vibrating hammer body. The axis of the vibrating hammer body is located in the vertical plane where the three rotating shafts are located. The rotation axis of the eccentric rotor of the first type of rotating shaft is collinear with the rotation axis of the middle eccentric rotor of the second type of rotating shaft, and the line connecting the rotation axes of the three eccentric rotors coincides with the axis of the vibrating hammer body. When the three eccentric rotors rotate to the direction of the axis of the vibrating hammer body, they are in phase. The mass moment of the middle eccentric rotor is the sum of the mass moments of the other two eccentric rotors. The two second type of rotating shafts rotate synchronously in opposite directions. The mass moments of the eccentric rotors at both ends are the same. The phase difference between the two eccentric rotors on different rotating shafts at the same end when they rotate to the direction of the axis of the vibrating hammer body is 180°. The phase difference between the eccentric rotors at both ends of the same rotating shaft is 180°.
[0021] The combination of the first type of rotating shaft and the second type of rotating shaft includes two first type rotating shafts and two second type rotating shafts. The four rotating shafts are arranged in parallel and coplanar. The four rotating shafts are symmetrically arranged about the axis of the vibrating hammer body, and adjacent rotating shafts rotate synchronously in opposite directions. The eccentric rotors of the first type of rotating shaft and the middle eccentric rotor of the second type of rotating shaft have the same mass moment and are in phase when rotating to the axis of the vibrating hammer body. The two second type of rotating shafts have the same mass moment for the eccentric rotors at both ends. When the eccentric rotors at both ends rotate to the axis of the vibrating hammer body, the phase difference between the two eccentric rotors on different rotating shafts at the same end is 180°, and the phase difference between the eccentric rotors at both ends on the same rotating shaft is 180°.
[0022] The rotating shaft is a combination of an even number of second-type rotating shafts. The even number of second-type rotating shafts are parallel and coplanar, and the plane they lie on is perpendicular to the axis of the vibrating hammer. The even number of second-type rotating shafts are symmetrically arranged about the axis of the vibrating hammer. The mass moments of the eccentric rotors in the middle of the even number of second-type rotating shafts are the same and their phases are symmetrical about the axial direction of the vibrating hammer, rotating in opposite directions. For the eccentric rotors at both ends of the even number of second-type rotating shafts, when they rotate to the plane perpendicular to the axis of the vibrating hammer, the phase difference between the two eccentric rotors on different rotating shafts at the same end is 0, and the phase difference between the eccentric rotors at both ends of the same rotating shaft is 180°.
[0023] The beneficial effects of this utility model are as follows: This utility model breaks through the existing one-dimensional linear power drive scheme and method of conventional vibratory pile driving and extraction machines. It embeds a second-dimensional torsional vibration drive scheme and method on the basis of the original linear vibration drive, realizing a two-dimensional power drive scheme and method. By adjusting the redistribution mechanism of the coupling friction force between the pile and the soil, the friction force between the pile and the soil is greatly reduced during the pile driving and extraction process. This allows for quieter and easier sinking and extraction of the pile into or out of the medium. Furthermore, the vibratory pile driving and extraction process is more efficient, with a high penetration rate, ultimately achieving the goal of efficient and environmentally friendly vibratory pile driving and extraction. It improves the pile penetration rate; increases pile driving and extraction efficiency; reduces pile driving and extraction engineering costs; achieves efficient pile driving and extraction in hard soil conditions; reduces power consumption; and prevents pile deformation and damage. Because torsional vibration is embedded in addition to linear vibration, the dynamic load and noise transmitted to the surrounding environment are very small, avoiding impact on the surrounding environment. Especially for marine pile driving and extraction, the two-dimensional power drive vibratory pile driving and extraction scheme and method can effectively protect marine life from impact, avoiding adverse effects on the marine ecological environment during the vibratory pile driving and extraction process, thus protecting the environment. Attached Figure Description
[0024] Figure 1 This is a structural principle and dynamic model of a two-dimensional, strongly coupled, high-efficiency, and environmentally friendly vibratory pile hammer.
[0025] Figure 2 This is the first schematic diagram of a two-dimensional, strongly coupled, high-efficiency, and environmentally friendly vibratory pile hammer.
[0026] Figure 3 This is a second schematic diagram of a two-dimensional, strongly coupled, high-efficiency, and environmentally friendly vibratory pile hammer.
[0027] Figure 4 This is a schematic diagram of the third type of two-dimensional dynamic strongly coupled drive high-efficiency and environmentally friendly vibratory pile hammer.
[0028] In the diagram: 1. Vibratory hammer body; 2. Pile body; 3. Two-machine coupled torsional vibration exciter group; 4. Two-gear meshing equal strong coupling mechanism; 5. Two-machine torsional vibration exciter group with strong linear and torsional coupling; 6. Three-machine linear vibration exciter group with strong linear and torsional coupling; 7. Three-gear meshing equal strong coupling mechanism with strong linear and torsional coupling; 8. Two-machine coupled linear vibration exciter group; 9. Four-machine coupled linear vibration exciter group; 10. Four-gear meshing equal strong coupling mechanism. Detailed Implementation
[0029] A two-dimensional, strongly coupled, high-efficiency, and environmentally friendly vibratory pile hammer, such as... Figure 1As shown, the basic mechanical model structure of this two-dimensional power strongly coupled driven high-efficiency and environmentally friendly vibratory pile hammer mainly includes a vibratory hammer body 1, a pile body 2, a linear vibration exciter group, and a torsional vibration exciter group; in this utility model, a two-dimensional power source is provided. Two-dimensional power sources work together on the vibratory hammer 1, and the pile 2 is rigidly fixed on the vibratory hammer 1. The two-dimensional power sources acting on the vibratory hammer 1 include a linear vibration excitation force along the axial direction of the vibratory hammer 1 and the pile 2, i.e., the first-dimensional power source F(t), and a torsional vibration excitation force around the circumferential direction of the axis of the vibratory hammer 1 and the pile 2, i.e., around the circumferential direction of the center line of the cross section of the pile 2, i.e., the second-dimensional power source M(t). The first-dimensional power source F(t) and the second-dimensional power source M(t) are simultaneously loaded onto the vibratory hammer 1 with the pile 2, so that the vibratory hammer 1 and the pile 2 simultaneously realize linear vibration in their axial direction and torsional vibration around their axis. This vibration mode can also be regarded as a composite vibration driven by two-dimensional power, namely the linear vibration in the axial direction of the vibratory hammer 1 and the torsional vibration around their axis, and finally realizes the efficient and environmentally friendly vibration driving and pulling function of the vibratory pile hammer.
[0030] The linear vibration excitation force of the first-dimensional power source is perpendicular to the plane of the torque of the torsional vibration excitation force of the second-dimensional power source, and the plane of the torque is parallel to the radial section of the vibrating hammer 1 or the pile 2; the vibrating hammer 1 can be square, circular or other shapes; the pile 2 can be square, circular or other shapes; the vibration frequency and amplitude of the first-dimensional power source and the second-dimensional power source can be equal or unequal; the positions of the first-dimensional power source and the second-dimensional power source can be interchanged.
[0031] Both the linear vibration exciter group and the torsional vibration exciter group are implemented using two types of shafts. The first type has an eccentric rotor arranged at the center of the shaft; the second type has three eccentric rotors arranged on the shaft, with one eccentric rotor at the center and one eccentric rotor at each end of the shaft. The eccentric rotors at both ends of the same shaft have the same moment of mass and a phase difference of 180°, while the phase difference between the eccentric rotor at the center and the eccentric rotors at both ends is 0-180°.
[0032] The rotating shaft is composed of multiple second-type rotating shafts or a combination of first-type and second-type rotating shafts;
[0033] The rotating shafts rotate synchronously through a strong coupling mechanism, generating a linear vibration excitation force along the axial direction of the vibrating hammer body 1 and a torsional vibration excitation force around the circumferential direction of the axis of the vibrating hammer body 1.
[0034] As a specific embodiment, such as Figure 2As shown, the linear vibration exciter group and the torsional vibration exciter group are strongly coupled and symmetrical about the axis of the vibratory hammer 1 and the pile 2. The rotating shaft includes one first-type shaft and two second-type shafts, arranged in parallel and coplanar planes. The plane containing the three shafts passes through the axis of the vibratory hammer 1. The axis of rotation of the eccentric rotor of the first-type shaft is collinear with the axis of rotation of the middle eccentric rotor of the second-type shaft, and the line connecting the three eccentric rotors coincides with the axis of rotation of the vibratory hammer. The three eccentric rotors are in phase when rotating to the axis of rotation of the vibratory hammer 1. The moment of mass of the middle eccentric rotor is 2m. s r s For the mass torques of the other two eccentric rotors m s r s The sum of the two second type of rotating shafts; the eccentric rotors at both ends of the two shafts have the same mass moment, m0r, and the phase difference between the two eccentric rotors on different shafts at the same end is 180°, and the phase difference between the eccentric rotors at both ends of the same shaft is 180°. The middle eccentric rotor of the three shafts forms a three-machine linear vibration exciter group 6 with strong linear and torsional coupling, providing the first-dimensional power source; the eccentric rotors at both ends of the second type of rotating shaft form a two-machine torsional vibration exciter group 5 with strong linear and torsional coupling, providing the second-dimensional power source; the three shafts achieve strong coupling through a three-gear meshing strong coupling mechanism 7 with strong linear and torsional coupling. When the three rotating shafts operate synchronously, the excitation forces of the three-machine linear vibration exciter group 6, which is strongly coupled with linear and torsional forces, cancel each other out in the axial direction perpendicular to the vibrating hammer 1 and the pile 2 (i.e., the resultant force is 0), while the excitation forces in the axial direction of the vibrating hammer 1 and the pile 2 are completely positively superimposed to form a linear vibration excitation force, thereby realizing the linear vibration function of the vibrating hammer 1 and the pile 2 in the axial direction. At the same time, the excitation forces of the two-machine torsional vibration exciter group 5, which is strongly coupled with linear and torsional forces, cancel each other out in the axial direction of the vibrating hammer 1 and the pile 2 (i.e., the resultant force is 0), while in the plane perpendicular to the axial direction of the vibrating hammer 1 and the pile 2, a couple of excitation forces in the circumferential direction around the axis of the vibrating hammer 1 and the pile 2 are completely positively superimposed, thereby realizing the torsional vibration function of the vibrating hammer 1 and the pile 2. Multiple sets of "three-machine linear vibration exciter group with strong linear and torsional coupling" 6 and "two-machine torsional vibration exciter group with strong linear and torsional coupling" 5 can be used, and they can be strongly coupled through a strong coupling mechanism to achieve the linkage-driven linear vibration function and torsional vibration function.
[0035] As a specific embodiment, such as Figure 3As shown, the linear vibration exciter group and the torsional vibration exciter group are strongly coupled and symmetrical about the axis of the vibrating hammer 1 and the pile 2. A second type of rotating shaft is used; the two second-type rotating shafts are parallel and coplanar, and their plane is perpendicular to the axis of the vibrating hammer 1. The two second-type rotating shafts are symmetrically arranged about the axis of the vibrating hammer 1. The mass moment of the eccentric rotors in the middle of the two second-type rotating shafts is the same, both being m. s r s Furthermore, the phases of the two shafts are symmetrical and reversed about the axial direction of the vibrating hammer body 1. The two shafts of the second type are strongly coupled through a strong coupling mechanism 4 with two gears meshing. For the eccentric rotors at both ends of the two shafts of the second type, the mass torque is m0r. When the shafts are rotated to the plane perpendicular to the axis of the vibrating hammer body, the phase difference between the two eccentric rotors on the same end of the shafts is 0, and the phase difference between the two eccentric rotors on the same shaft is 180°. The two eccentric rotors at the middle of the two second-type rotating shafts form a two-machine coupled linear vibration exciter group 8. The excitation forces of the two-machine coupled linear vibration exciter group 8 in the direction perpendicular to the axial direction of the vibrating hammer 1 and the pile 2 cancel each other out (i.e., the resultant force is 0), while the excitation forces in the axial direction of the vibrating hammer 1 and the pile 2 are completely positively superimposed to form a linear vibration excitation force, thereby realizing the linear vibration function of the vibrating hammer 1 and the pile 2 in the axial direction. The two eccentric rotors at both ends of the two second-type rotating shafts form a two-machine coupled torsional vibration exciter group 3. The excitation forces of the two-machine coupled torsional vibration exciter group 3 in the axial direction of the vibrating hammer 1 and the pile 2 cancel each other out (i.e., the resultant force is 0), while in the plane perpendicular to the axial direction of the vibrating hammer 1 and the pile 2, a couple of excitation forces in the circumferential direction around the axis of the vibrating hammer 1 and the pile 2 are completely positively superimposed, thereby realizing the torsional vibration function around the axis of the vibrating hammer 1 and the pile 2 in the circumferential direction. Multiple sets of "two-machine coupled linear vibration exciter groups 8" can be used to achieve the linkage driving linear vibration function through a strong coupling mechanism. Multiple sets of "two-machine coupled torsional vibration exciter groups 1" can be used to achieve the linkage driving torsional vibration function through a strong coupling mechanism.
[0036] As a specific embodiment, such as Figure 4As shown, the linear vibration exciter group and the torsional vibration exciter group are strongly coupled and symmetrical about the axis of the vibrating hammer 1 and the pile 2. It includes two first-type rotating shafts and two second-type rotating shafts, with the four shafts arranged in parallel and coplanar. The eccentric rotors of the first-type rotating shafts and the middle eccentric rotors of the second-type rotating shafts have equal moments of mass and are in phase when rotating to the axis of the vibrating hammer. The two second-type rotating shafts have eccentric rotors at both ends with the same moment of mass, and the phase difference between the two eccentric rotors on different shafts at the same end is 180°. The phase difference between the eccentric rotors at both ends of the same rotating shaft is also 180°. The middle eccentric rotors of the four rotating shafts form a four-machine coupled linear vibration exciter group 9; the eccentric rotors at both ends of the two second-type rotating shafts form a two-machine coupled torsional vibration exciter group 3; the four rotating shafts are strongly coupled through a four-gear meshing strong coupling mechanism 10. The four-machine coupled linear vibration exciter group 9 achieves linear vibration by canceling out the excitation forces perpendicular to the axial direction of the vibrating hammer 1 and the pile 2 (i.e., the resultant force is 0), while the excitation forces in the axial direction of the vibrating hammer 1 and the pile 2 are completely superimposed to form a linear vibration excitation force, thereby realizing the linear vibration function in the axial direction of the vibrating hammer 1 and the pile 2. The two-machine coupled torsional vibration exciter group achieves torsional vibration in the circumferential direction around the axis of the vibrating hammer 1 and the pile 2. Multiple sets of "four-machine coupled linear vibration exciter groups 9" can be used to achieve the linkage driving linear vibration function through a strong coupling mechanism, and multiple sets of "two-machine coupled torsional vibration exciter groups 3" can be used to achieve the linkage driving torsional vibration function through a strong coupling mechanism.
Claims
1. A two-dimensional, strongly coupled, high-efficiency, and environmentally friendly vibratory pile hammer, characterized in that, It includes multiple rotating shafts and an eccentric rotor, arranged inside the vibratory hammer body (1), and the pile body (2) is rigidly connected to the vibratory hammer body (1). There are two types of rotating shafts: the first type has an eccentric rotor arranged at its center; the second type has three eccentric rotors arranged on its shaft, with one eccentric rotor at its center and one eccentric rotor at each end. The eccentric rotors at both ends of the same second type of rotating shaft have the same moment of mass and a phase difference of 180°. The phase difference between the eccentric rotor at the center of the second type of rotating shaft and the eccentric rotors at both ends is 0-180°. The rotating shaft is composed of multiple second-type rotating shafts or a combination of first-type and second-type rotating shafts; The rotating shafts rotate synchronously through a strong coupling mechanism, generating a linear vibration excitation force along the axial direction of the vibrating hammer body (1) and a torsional vibration excitation force around the axis of the vibrating hammer body (1). The direction of the linear vibration excitation force is perpendicular to the plane where the couple of the torsional vibration excitation force is located; the plane where the couple of the torsional vibration excitation force is located is perpendicular to the axis of the axial direction of the vibrating hammer (1), and the axis of the vibrating hammer (1) passes through the center point of the plane where the couple of the torsional vibration excitation force is located.
2. The two-dimensional dynamic strongly coupled drive high-efficiency and environmentally friendly vibratory pile hammer according to claim 1, characterized in that, The excitation force for linear vibration is a low-frequency large amplitude or a high-frequency small amplitude; the excitation force for torsional vibration is a low-frequency large amplitude or a high-frequency small amplitude.
3. The two-dimensional dynamic strongly coupled drive high-efficiency and environmentally friendly vibratory pile hammer according to claim 1, characterized in that, The combination of the first type of rotating shaft and the second type of rotating shaft includes one first type of rotating shaft and two second type of rotating shafts. The three rotating shafts are arranged in parallel and are located in the same vertical plane. The eccentric rotors on the three rotating shafts are symmetrically arranged about the axis of the vibrating hammer (1). The axis of the vibrating hammer (1) is in the vertical plane where the three rotating shafts are located. The rotation axis of the eccentric rotor of the first type of rotating shaft is collinear with the rotation axis of the middle eccentric rotor of the second type of rotating shaft, and the line connecting the rotation axes of the three eccentric rotors coincides with the axis of the vibrating hammer (1). When the three eccentric rotors rotate to the direction of the axis of the vibrating hammer (1), they are in the same phase. The mass moment of the middle eccentric rotor is the sum of the mass moments of the other two eccentric rotors. The two second type of rotating shafts rotate synchronously in opposite directions. The mass moments of the eccentric rotors at both ends are the same. The phase difference between the two eccentric rotors on different rotating shafts at the same end when they rotate to the direction of the axis of the vibrating hammer (1) is 180°. The phase difference between the eccentric rotors at both ends of the same rotating shaft is 180°.
4. The two-dimensional dynamic strongly coupled drive high-efficiency and environmentally friendly vibratory pile hammer according to claim 1, characterized in that, The combination of the first type of rotating shaft and the second type of rotating shaft includes two first type of rotating shafts and two second type of rotating shafts. The four rotating shafts are arranged in parallel and coplanar. The four rotating shafts are arranged symmetrically about the axis of the vibrating hammer (1). Adjacent rotating shafts rotate synchronously in opposite directions. The eccentric rotor of the first type of rotating shaft and the middle eccentric rotor of the second type of rotating shaft have the same mass moment. When they rotate to the axis of the vibrating hammer (1), they are in phase. The two second type of rotating shafts have the same mass moment of the eccentric rotors at both ends. When the eccentric rotors at both ends rotate to the axis of the vibrating hammer (1), the phase difference between the two eccentric rotors on different rotating shafts at the same end is 180°. The phase difference between the eccentric rotors at both ends on the same rotating shaft is 180°.
5. The two-dimensional dynamic strongly coupled drive high-efficiency and environmentally friendly vibratory pile hammer according to claim 1, characterized in that, The rotating shaft is a combination of an even number of second-type rotating shafts. The even number of second-type rotating shafts are parallel and coplanar, and the plane they are in is perpendicular to the axis of the vibrating hammer (1). The even number of second-type rotating shafts are arranged symmetrically about the axis of the vibrating hammer (1). The mass moments of the eccentric rotors in the middle of the even number of second-type rotating shafts are the same and their phases are symmetrical about the axial direction of the vibrating hammer (1) and they rotate in opposite directions. For the eccentric rotors at both ends of the even number of second-type rotating shafts, when they rotate to the plane perpendicular to the axis of the vibrating hammer, the phase difference between the two eccentric rotors on different rotating shafts at the same end is 0, and the phase difference between the eccentric rotors at both ends of the same rotating shaft is 180°.