Two-dimensional power combined driving decoupling arrangement type high-efficiency environment-friendly vibration pile hammer
By using a two-dimensional power-driven decoupled vibratory pile hammer, combined with linear and torsional vibration exciter groups, the problems of existing vibratory pile hammers in terms of pile depth, efficiency, cost and environmental impact have been solved, achieving efficient and environmentally friendly vibratory pile driving and extraction.
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
Existing vibratory pile hammers have shortcomings in terms of pile depth, efficiency, cost, and environmental impact, especially in hard soil and in cases of high noise, high power consumption, and easy pile deformation.
A two-dimensional power-driven decoupled vibratory pile hammer is adopted, which combines linear vibration and torsional vibration exciter groups. Two-dimensional power drive is achieved through piston exciter and eccentric rotor, which optimizes system parameters and vibration reduction and noise reduction effects.
It improves the efficiency and quality of vibratory pile driving and extraction, reduces environmental impact, lowers noise and dynamic load, and achieves efficient and environmentally friendly pile foundation operations.
Smart Images
Figure CN224468372U_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 power combined drive decoupled arrangement 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 combined-drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer. The aim is to achieve high efficiency, high quality, environmental friendliness, noise reduction, pile protection, energy saving, and easy pile extraction in pile foundation operations through innovative technologies such as innovative vibration modes (using two-dimensional dynamic drive), redistribution of the coupled frictional force vector between the pile and soil, optimization of system parameter determination methods, and improved vibration reduction and noise reduction effects. This provides a completely new solution for pile foundation engineering. Utility Model Content
[0013] To address the shortcomings of existing technologies, this utility model proposes a two-dimensional power combined drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer.
[0014] The technical solution of this utility model is as follows: A two-dimensional power combined drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer, including a linear vibration exciter group and a torsional vibration exciter group; the linear vibration exciter group provides axial linear vibration excitation force, and the torsional vibration exciter group provides circumferential torsional vibration excitation force, and the two are respectively arranged in the vibratory hammer body, and the pile body is rigidly connected to the vibratory hammer body; the linear vibration exciter group and the torsional vibration exciter group are arranged in single or multiple groups respectively.
[0015] The vibration exciter of the linear vibration exciter group and the torsional vibration exciter of the torsional vibration exciter group are respectively piston exciters driven by various power sources, or eccentric rotors driven by various power sources.
[0016] The linear vibration exciter group and the torsional vibration exciter group are arranged symmetrically about the axis of the vibratory hammer and the pile, respectively.
[0017] The excitation force for linear vibration is either low-frequency large amplitude or high-frequency small amplitude, and the excitation force for torsional vibration is either low-frequency large amplitude or high-frequency small amplitude.
[0018] The piston-type vibrator consists of a counterweight on the piston, which enables the piston to reciprocate linearly.
[0019] The linear vibration exciter group is a single piston exciter or includes multiple piston exciters; for a linear vibration exciter group composed of multiple piston exciters, multiple piston exciters are driven to perform reciprocating motion with the same amplitude, frequency and phase through synchronous control, and the multiple piston exciters are symmetrically arranged about the axis of the vibrating hammer.
[0020] The torsional vibration exciter group includes multiple piston exciters, which are evenly or symmetrically arranged in a plane perpendicular to the axis of the vibrating hammer and the pile. The multiple piston exciters perform reciprocating motion with the same frequency and phase, ultimately achieving torsional vibration in the circumferential direction around the axis of the vibrating hammer and the pile.
[0021] The linear vibration exciter group is a multi-machine coupled linear vibration exciter group, including at least two vibration exciters; each vibration exciter consists of an eccentric rotor driven by various power sources; when the number of vibration exciters in the linear vibration exciter group is even, the whole is symmetrical about the axis of the vibrating hammer; the eccentric rotors in each linear vibration exciter group have the same mass moment, and the phase between each adjacent eccentric rotor is symmetrical about the axial direction of the vibrating hammer, rotating in opposite directions; when the number of vibration exciters in the linear vibration exciter group is odd, the whole is symmetrical about the axis of the vibrating hammer, the phase between each adjacent eccentric rotor is symmetrical about the axial direction of the vibrating hammer, rotating in opposite directions, and the sum of the mass moments of the eccentric rotors in the clockwise rotation direction is equal to the sum of the mass moments of the eccentric rotors in the counterclockwise rotation direction.
[0022] The torsional vibration exciter group is a multi-machine coupled torsional vibration exciter group, including multiple torsional vibration exciters. Each torsional vibration exciter consists of an eccentric rotor driven by various power sources. The rotation center of each torsional vibration exciter is located on the circumference of the same circle, and the center of the gear meshing strong coupling mechanism is located at the center of the circle. The outer circumference of the gear meshing strong coupling mechanism meshes with the outer circumference of each torsional vibration exciter. The circumferences of each torsional vibration exciter are evenly distributed on a circle centered on the pile axis and perpendicular to the pile axis. The phase difference between the eccentric rotors of adjacent torsional vibration exciters is fixed at 360 / j degrees, where j is the number of torsional vibration exciters, and j≥2.
[0023] The torsional vibration exciter group includes at least two torsional vibration exciters; each torsional vibration exciter includes a rotating shaft and an eccentric rotor, with two eccentric rotors arranged on each rotating shaft, located at opposite ends of the shaft; the rotating shafts are strongly coupled using a gear meshing or other strong coupling mechanism, and adjacent rotating shafts rotate in opposite directions; the two eccentric rotors on the same rotating shaft have a phase difference of 180°; when the number of torsional vibration exciters in the torsional vibration exciter group is even, the eccentric rotors of each torsional vibration exciter have the same mass moment, and the same end has a phase difference of 180°. The eccentric rotors on adjacent shafts rotate in opposite directions. When the eccentric rotors on adjacent shafts at the same end are aligned with the axis of the vibrating hammer, the phase difference between them is 180°. When the number of torsional vibration exciters is odd, the eccentric rotors on adjacent shafts at the same end rotate in opposite directions. When the eccentric rotors on adjacent shafts at the same end are aligned with the axis of the vibrating hammer, the phase difference between them is 180°. The sum of the mass moments of the eccentric rotors rotating clockwise is equal to the sum of the mass moments of the eccentric rotors rotating counterclockwise.
[0024] The beneficial effects of this utility model are as follows: the use of a piston-type vibrator allows for flexible adjustment of amplitude and frequency by controlling hydraulic parameters; the decoupled arrangement of the linear vibration vibrator group and the torsional vibration vibrator group achieves dual high-efficiency vibration pile driving and extraction functions; the penetration rate of vibration pile driving is significantly improved; the additional embedding of torsional vibration achieves flexible and high-efficiency vibration pile driving and extraction functions; the pile driving and extraction efficiency is significantly improved; the dynamic load transmitted to the foundation during vibration pile driving and extraction is very small, protecting the environment; the noise transmitted to the surrounding area during vibration pile driving and extraction is very small, protecting the environment; and it can achieve efficient penetration of large pile foundations. Attached Figure Description
[0025] Figure 1 A structural principle and dynamic model of a two-dimensional, decoupled, high-efficiency, and environmentally friendly vibratory pile hammer with combined dynamic drive.
[0026] Figure 2 This is a schematic diagram of the first arrangement of a two-dimensional power-driven decoupled high-efficiency and environmentally friendly vibratory pile hammer.
[0027] Figure 3 This is a schematic diagram of the second arrangement of a two-dimensional power-driven decoupled high-efficiency and environmentally friendly vibratory pile hammer.
[0028] Figure 4 This is a schematic diagram of the third arrangement of a two-dimensional power-driven decoupled high-efficiency and environmentally friendly vibratory pile hammer.
[0029] Figure 5 This is a schematic diagram of the fourth arrangement of a two-dimensional power-driven decoupled high-efficiency and environmentally friendly vibratory pile hammer.
[0030] Figure 6 This is a schematic diagram of the fifth arrangement of a two-dimensional power-driven decoupled high-efficiency and environmentally friendly vibratory pile hammer.
[0031] In the diagram: 1. Vibratory hammer body; 2. Pile body; 3. Linear vibration four-gear meshing strong coupling mechanism; 4. Two-machine coupled torsional vibration exciter group; 5. Two-gear meshing strong coupling mechanism in the torsional direction; 6. Four-machine coupled torsional vibration exciter group; 7. Torsional vibration five-gear meshing strong coupling mechanism; 8. Single-piston linear vibration exciter group; 9. Four-piston combined torsional vibration exciter group; 10. Torsional vibration single-piston exciter; 11. Double-piston combined linear vibration exciter group; 12. Four-machine coupled linear vibration exciter group. Detailed Implementation
[0032] A two-dimensional power-driven decoupled high-efficiency and environmentally friendly vibratory pile hammer, such as Figure 1 As shown, the basic mechanical model structure of this two-dimensional power-driven decoupled high-efficiency and environmentally friendly vibratory pile hammer is as follows: Figure 1As shown, it mainly includes a vibratory hammer body 1, a pile body 2, a linear vibration exciter group, and a torsional vibration exciter group.
[0033] The vibration exciters in the linear vibration exciter group and the torsional vibration exciters in the torsional vibration exciter group are either piston-type exciters driven by various power sources or composed of eccentric rotors driven by various power sources. When the vibration exciters or torsional vibration exciters are composed of eccentric rotors driven by various power sources, the vibration exciters in the same linear vibration exciter group are synchronized through an equal-strength coupling mechanism, and the torsional vibration exciters in the same torsional vibration exciter group are synchronized through an equal-strength coupling mechanism.
[0034] Furthermore, the strong coupling mechanism can be a gear meshing strong coupling mechanism, a coupling strong coupling mechanism, etc.
[0035] In this invention, a two-dimensional power source is provided. The two-dimensional power sources work together on the vibratory hammer 1, and the pile 2 is rigidly fixed to the vibratory hammer 1. Strong coupling mechanisms, such as couplings and gear meshing, are used to ensure the synchronous operation of the linear vibration exciter group and the torsional vibration exciter group. The two-dimensional power source acting on the vibratory hammer 1 includes 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 linear vibration exciter group generates the first-dimensional power source F(t), and the torsional vibration exciter group generates the second-dimensional power source M(t). The linear vibration excitation force along the axial direction of the vibratory hammer 1 and the pile 2 is realized by the linear vibration exciter group. The linear vibration exciter group is symmetrically arranged about the axis of the vibratory hammer 1 and the pile 2. The torsional vibration excitation force in the circumferential direction around the axis of the vibratory hammer 1 and the pile 2 is realized by the torsional vibration exciter group, which is also symmetrically arranged about the axis of the vibratory hammer 1 and the pile 2. 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 in the circumferential direction around their axis. This vibration mode can also be regarded as a two-dimensional power-driven composite vibration of linear vibration in the axial direction and torsional vibration in the circumferential direction around their axis, ultimately realizing the efficient and environmentally friendly vibration pile driving and pulling function of the vibratory pile hammer.
[0036] The various power sources can be driven by motors, hydraulics, pneumatics, electromagnetics, etc.; the power driving methods of the first-dimensional power source F(t) and the second-dimensional power source M(t) can be motors, electromagnetics, hydraulics, pneumatics, etc.; motors include AC motors, DC motors, servo motors, stepper motors, etc.; hydraulic drives include hydraulic motors, hydraulic cylinders, etc.; pneumatic drives include pneumatic motors, cylinders, etc.
[0037] The linear vibration excitation force of the first-dimensional power source is perpendicular to the plane containing the couple of the torsional vibration excitation force of the second-dimensional power source, and the plane containing the couple 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. Multiple linear vibration exciter groups providing the first-dimensional power source can be used, and the linkage driving linear vibration function can be achieved through an equal-strength coupling mechanism. Multiple torsional vibration exciter groups providing the second-dimensional power source can be used, and the linkage driving torsional vibration function can be achieved through an equal-strength coupling mechanism.
[0038] like Figure 2 As shown, the linear vibration exciter group and the torsional vibration exciter group are decoupled and symmetrical about the axis of the vibrating hammer 1 and the pile 2 in the axial direction. The linear vibration exciter group adopts a single-piston linear vibration exciter group 8, which is a single piston exciter with a counterweight on the piston. It is driven by hydraulic or pneumatic drive, and the reciprocating linear vibration of the piston is achieved by controlling the hydraulic or pneumatic system to realize the linear vibration function of the vibrating hammer 1 and the pile 2 in the axial direction. The torsional vibration exciter group adopts a four-machine coupled torsional vibration exciter group 6 to realize the torsional vibration function in the circumferential direction about the axis of the vibrating hammer 1 and the pile 2. The four-machine coupled torsional vibration exciter group 6 includes four torsional vibration exciters. Each torsional vibration exciter consists of an eccentric rotor driven by various power sources. The mass torque of the eccentric rotor of each torsional vibration exciter is... The same value is m0r; the torsional vibration exciters are strongly coupled through a strong coupling mechanism 7, such as a torsional vibration five-gear meshing mechanism; the number of torsional vibration exciters can be expanded to j, where j≥2, and j is a natural number, thus becoming a j-machine coupled torsional vibration exciter group. The j torsional vibration exciters are evenly distributed on a circumferential plane perpendicular to the axis of the vibrating hammer 1 and the pile 2, with the axis as the center. Forced synchronous operation is achieved through j+1 meshing central gear mechanisms, and the phase difference between the eccentric rotors of two adjacent torsional vibration exciters is sequentially fixed at 360 / j degrees, thereby realizing the torsional vibration function of the vibrating hammer 1 and the pile 2 driven by the "j-machine coupled torsional vibration exciter group". The positions of the single-piston linear vibration exciter group 8 and the four-machine coupled torsional vibration exciter group 6 can be interchanged.
[0039] Furthermore, the linear vibration exciter group can also use multiple single-piston linear vibration exciter groups 8 for linkage drive to realize the linear vibration function of the vibrating hammer 1 and the pile 2 in the axial direction.
[0040] like Figure 3 As shown, the linear vibration exciter group and the torsional vibration exciter group are decoupled and arranged symmetrically about the axis of the vibratory hammer and the pile body in the axial direction. The linear vibration exciter group adopts a four-machine coupled linear vibration exciter group 12, and achieves strong coupling through a strong coupling mechanism 3 such as linear vibration four-gear meshing, thereby realizing the axial linear vibration function of the vibrating hammer 1 and the pile 2. The torsional vibration exciter group adopts a four-piston combined torsional vibration exciter group 9, which includes four piston exciters. Each piston exciter is evenly or symmetrically arranged in a plane perpendicular to the axis of the vibrating hammer 1 and the pile 2 and centered on the axis. Through hydraulic or pneumatic drive control, it achieves reciprocating motion with the same amplitude, frequency and phase, realizing the torsional vibration function around the axis of the vibrating hammer 1 and the pile 2 in the circumferential direction. The number of piston exciters in the torsional vibration exciter group can be expanded to j, j≥2, where j is a natural number. Through hydraulic or pneumatic drive control, it achieves reciprocating motion with the same amplitude, frequency and phase, thereby realizing the torsional vibration function of linkage drive around the axis of the vibrating hammer 1 and the pile 2 in the circumferential direction. The positions of the four-machine coupled linear vibration exciter group 12 and the four-piston combined torsional vibration exciter group 9 can be interchanged.
[0041] The four-machine coupled linear vibration exciter group 12 includes four vibration exciters; each vibration exciter consists of an eccentric rotor driven by various power sources; the whole group is symmetrical about the axis of the vibrating hammer 1; the eccentric rotors in each linear vibration exciter group have the same moment of mass, which is m. s r s The phases between adjacent eccentric rotors are symmetrical about the axial direction of the vibrating hammer (1), and they rotate in the opposite direction.
[0042] Furthermore, multiple sets of "four-machine coupled linear vibration exciter groups 12" can be used and the linkage driving linear vibration function can be realized through a strong coupling mechanism.
[0043] like Figure 4As shown, the linear vibration exciter group and the torsional vibration exciter group are decoupled and symmetrical about the axis of the vibrating hammer 1 and the pile 2. The linear vibration exciter group adopts a double-piston combined linear vibration exciter group 11, including two piston exciters. The double-piston combined linear vibration exciter group 11 is driven by hydraulic or pneumatic drive, and the two pistons are controlled by hydraulic or pneumatic system to achieve the same amplitude, frequency and phase reciprocating motion of the two pistons, realizing the linear vibration function of the vibrating hammer 1 and the pile 2 in the axial direction. The torsional vibration exciter group adopts a four-piston combined torsional vibration exciter group 9, including four torsional vibration single-piston exciters 10; realizing the torsional vibration function in the circumferential direction about the axis of the vibrating hammer and the pile. The positions of the double-piston combined linear vibration exciter group 11 and the four-piston combined torsional vibration exciter group 9 can be interchanged.
[0044] Furthermore, multiple "dual-piston combined linear vibration exciter groups 11" can be used for linkage control of reciprocating motion with the same amplitude, frequency and phase.
[0045] like Figure 5 As shown, the linear vibration exciter group and the torsional vibration exciter group are decoupled and symmetrical about the axis of the vibratory hammer and the pile. The linear vibration exciter group uses a single-piston linear vibration exciter group 8 to achieve linear vibration of the vibratory hammer 1 and the pile 2 in the axial direction. The torsional vibration exciter group uses a four-piston combined torsional vibration exciter group 9, which is hydraulically or pneumatically driven to achieve torsional vibration around the axis of the vibratory hammer 1 and the pile 2 in the circumferential direction. The positions of the single-piston linear vibration exciter group 8 and the four-piston combined torsional vibration exciter group 9 can be interchanged.
[0046] like Figure 6As shown, the linear vibration exciter group and the torsional vibration exciter group are decoupled and arranged symmetrically about the axis of the vibrating hammer 1 and the pile 2 in the axial direction. The linear vibration exciter group adopts a single-piston linear vibration exciter group 8 to realize the linear vibration function of the vibrating hammer and the pile in the axial direction. The torsional vibration exciter group adopts a two-machine coupled torsional vibration exciter group 4, which includes two torsional vibration exciters. Each torsional vibration exciter includes a rotating shaft and an eccentric rotor at its shaft end. Two eccentric rotors are arranged on each rotating shaft, located at both ends of the shaft. The rotating shafts are strongly coupled by a strong coupling mechanism 5 with two gears meshing in the torsional direction, and adjacent rotating shafts rotate in opposite directions. The two eccentric rotors on the same rotating shaft have a phase difference of 180°. The eccentric rotors of each torsional vibration exciter have the same mass moment, m0r. The eccentric rotors on adjacent rotating shafts at the same end rotate in opposite directions. When the eccentric rotors on adjacent rotating shafts at the same end are aligned with the axis of the vibrating hammer 1, the phase difference between them is 180°. The two-machine coupled torsional vibration exciter group 4 realizes the torsional vibration function in the circumferential direction around the axis of the vibrating hammer 1 and the pile 2. Multiple "two-machine coupled torsional vibration exciter groups 4" can be used and linked to drive the torsional vibration function through a strong coupling mechanism. The positions of the single-piston linear vibration exciter group 8 and the two-machine coupled torsional vibration exciter group 4 can be interchanged.
Claims
1. A two-dimensional power-driven decoupled high-efficiency and environmentally friendly vibratory pile hammer, characterized in that, It includes a linear vibration exciter group and a torsional vibration exciter group; the linear vibration exciter group provides axial linear vibration excitation force, and the torsional vibration exciter group provides circumferential torsional vibration excitation force. The two are respectively arranged in the vibrating hammer body (1), and the pile body (2) is rigidly connected to the vibrating hammer body (1); the linear vibration exciter group and the torsional vibration exciter group are arranged in single or multiple groups respectively. The vibration exciter of the linear vibration exciter group and the torsional vibration exciter of the torsional vibration exciter group are respectively piston exciters driven by various power sources, or eccentric rotors driven by various power sources. The linear vibration exciter group and the torsional vibration exciter group are arranged symmetrically about the axis of the vibrating hammer (1) and the pile (2), respectively.
2. The two-dimensional power combined drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer according to claim 1, characterized in that, The excitation force for linear vibration is either low-frequency large amplitude or high-frequency small amplitude, and the excitation force for torsional vibration is either low-frequency large amplitude or high-frequency small amplitude.
3. The two-dimensional power combined drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer according to claim 1, characterized in that, The piston-type vibrator consists of a counterweight on the piston, which enables the piston to reciprocate linearly.
4. The two-dimensional power combined drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer according to claim 3, characterized in that, The linear vibration exciter group is a single piston exciter or includes multiple piston exciters; for a linear vibration exciter group composed of multiple piston exciters, multiple piston exciters are driven to perform reciprocating motion with the same amplitude, frequency and phase through synchronous control, and the multiple piston exciters are arranged symmetrically about the axis of the vibrating hammer (1).
5. The two-dimensional power combined drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer according to claim 3, characterized in that, The torsional vibration exciter group includes multiple piston exciters, which are evenly or symmetrically arranged in a plane perpendicular to the axis of the vibrating hammer (1) and the pile (2). The multiple piston exciters perform reciprocating motion with the same frequency and phase, and finally realize torsional vibration in the circumferential direction around the axis of the vibrating hammer (1) and the pile (2).
6. The two-dimensional power combined drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer according to claim 1, characterized in that, The linear vibration exciter group is a multi-machine coupled linear vibration exciter group, including at least two vibration exciters; each vibration exciter is composed of eccentric rotors driven by various power sources; when the number of vibration exciters in the linear vibration exciter group is even, the whole is symmetrical about the axis of the vibration hammer (1); the eccentric rotors in each linear vibration exciter group have the same mass moment, and the phase between each adjacent eccentric rotor is symmetrical about the axial direction of the vibration hammer (1), and rotates in the opposite direction; when the number of vibration exciters in the linear vibration exciter group is odd, the whole is symmetrical about the axis of the vibration hammer (1), the phase between each adjacent eccentric rotor is symmetrical about the axial direction of the vibration hammer (1), and rotates in the opposite direction, and the sum of the mass moments of the eccentric rotors in the clockwise rotation direction is equal to the sum of the mass moments of the eccentric rotors in the counterclockwise rotation direction.
7. The two-dimensional power combined drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer according to claim 1, characterized in that, The torsional vibration exciter group is a multi-machine coupled torsional vibration exciter group, including multiple torsional vibration exciters. Each torsional vibration exciter consists of an eccentric rotor driven by various power sources. The rotation center of each torsional vibration exciter is located on the circumference of the same circle, and the center of the gear meshing strong coupling mechanism is located at the center of the circle. The outer circumference of the gear meshing strong coupling mechanism meshes with the outer circumference of each torsional vibration exciter. The circumferences of each torsional vibration exciter are evenly distributed on a circle centered on the pile axis and perpendicular to the pile axis. The phase difference between the eccentric rotors of adjacent torsional vibration exciters is fixed at 360 / j degrees, where j is the number of torsional vibration exciters, and j≥2.
8. The two-dimensional power combined drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer according to claim 1, characterized in that, The torsional vibration exciter group includes at least two torsional vibration exciters; each torsional vibration exciter includes a rotating shaft and an eccentric rotor, with two eccentric rotors arranged on each rotating shaft, located at both ends of the shaft respectively; the rotating shafts are strongly coupled by a gear meshing or other strong coupling mechanism, and adjacent rotating shafts rotate in opposite directions; the two eccentric rotors on the same rotating shaft have a phase difference of 180°; when the number of torsional vibration exciters in the torsional vibration exciter group is even, the eccentric rotor mass moments of each torsional vibration exciter are the same, and adjacent rotating shafts at the same end... The eccentric rotors on the same end rotate in opposite directions. When the eccentric rotors on adjacent shafts at the same end rotate in the direction of the axis of the vibrating hammer (1), the phase difference between them is 180°. When the number of torsional vibration exciters is odd, the adjacent torsional vibration exciters rotate in opposite directions. When the eccentric rotors on adjacent shafts at the same end rotate in the direction of the axis of the vibrating hammer (1), the phase difference between them is 180°. The sum of the mass moments of the eccentric rotors rotating clockwise is equal to the sum of the mass moments of the eccentric rotors rotating counterclockwise.