Large two-dimensional power linkage driving decoupling arrangement type high-efficiency environmental protection type vibrating pile hammer
By using a large-scale two-dimensional dynamic linkage-driven decoupled vibratory pile hammer, combined with linear and torsional vibration exciters, the distribution of pile-soil friction is optimized, solving the problems of low efficiency, high cost, high noise, and serious environmental impact of existing vibratory pile hammers, and realizing efficient and environmentally friendly vibratory pile driving and extraction construction.
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 single-dimensional drive method of existing vibratory pile hammers results in insufficient pile depth, low efficiency, high construction costs, high noise, high power consumption, and serious environmental impact, especially in hard soil and marine environments.
A large-scale two-dimensional dynamic linkage driven decoupled vibratory pile hammer is adopted, which combines linear vibration and torsional vibration exciters. The two-dimensional dynamic drive method optimizes the distribution of pile-soil friction force, realizing efficient and environmentally friendly vibratory pile driving and extraction.
It significantly improves pile penetration rate and construction efficiency, reduces costs and noise, and protects the environment, especially with better construction results in hard soil and marine environments.
Smart Images
Figure CN224468371U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vibratory pile driving (extraction) technology, and in particular to a large-scale two-dimensional dynamic linkage 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 large-scale, two-dimensional, power-driven, decoupled, 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 through innovative technologies such as innovative vibration modes (using two-dimensional power drive), redistribution of the coupled frictional force vector between the pile and soil, optimization of system parameters, and improved vibration reduction and noise reduction effects. 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 large-scale two-dimensional dynamic linkage drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer.
[0014] The technical solution of this utility model is as follows: a large two-dimensional dynamic linkage drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer, including a linkage linear vibration exciter group and a linkage torsional vibration exciter group;
[0015] The linked linear vibration exciter group provides axial linear vibration excitation force, and the linked 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.
[0016] The linked linear vibration exciter group includes multiple linear vibration exciter groups; each linear vibration exciter in each linear vibration exciter group is synchronized through a strong coupling mechanism, and the linear vibration exciter groups are connected and synchronized through couplings.
[0017] The linkage torsional vibration exciter group is equipped with multiple sets of torsional vibration exciters; each torsional vibration exciter is arranged in multiple rows and / or multiple columns; adjacent torsional vibration exciters are synchronized through a strong coupling mechanism.
[0018] 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.
[0019] The linked linear vibration exciter group and the linked torsional vibration exciter group are arranged symmetrically about the axis of the vibrating hammer 1 and the pile 2, respectively.
[0020] The linear vibration exciter group includes at least two linear vibration exciters; each linear vibration exciter is equipped with an eccentric rotor; when the number of linear vibration exciters is even, the whole group is symmetrical about the axis of the vibrating hammer 1; the eccentric rotors of each linear vibration exciter have the same moment of mass, and adjacent eccentric rotors are symmetrical in phase and rotate in opposite directions; when the number of linear vibration exciters is odd, the whole group is symmetrical about the axis of the vibrating hammer 1; adjacent eccentric rotors are symmetrical in phase, rotate in opposite directions, and the sum of the moment of mass of the eccentric rotors in the clockwise rotation direction is equal to the sum of the moment of mass of the eccentric rotors in the counterclockwise rotation direction.
[0021] Between different linear vibration exciter groups, the linear vibration exciters located on the same straight line have eccentric rotors rotating in the same phase and direction.
[0022] The torsional vibration exciter includes multiple rotating shafts, which are synchronized through a strong coupling mechanism. Each shaft has an eccentric rotor at both ends, with the two eccentric rotors having the same mass, a phase difference of 180°, and rotating in the same direction. When the eccentric rotors on two vertically adjacent shafts at the same end rotate to the axial direction of the vibrating hammer, the phase difference is 180°.
[0023] Both ends of the rotating shaft are synchronized through a strong coupling mechanism. One rotating shaft is connected to the two eccentric rotors, while the other rotating shafts are disconnected in the middle. Alternatively, one end of the rotating shaft is synchronized through a strong coupling mechanism, while the other end of the rotating shaft is not connected to the strong coupling mechanism.
[0024] The angle between the rotation axis of the linked linear vibration exciter group and the perpendicular line to the rotation axis of the linked torsional vibration exciter group is 0-90 degrees.
[0025] The beneficial effects of this utility model are:
[0026] This invention 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 coupling friction redistribution mechanism between the pile and the soil, the friction between the pile and the soil is greatly reduced during the pile driving and extraction process. This allows for quieter and easier sinking or extraction of the pile into or from the medium. Furthermore, the vibratory pile driving and extraction process is more efficient and has a higher penetration rate, ultimately achieving the goal of efficient and environmentally friendly vibratory pile driving and extraction. The penetration rate of large piles is effectively improved, meeting the requirements of pile foundation depth engineering; the overall driving and pulling efficiency of large piles is significantly improved; the cost of driving and pulling large piles is significantly reduced; the driving and pulling function of large piles can be effectively realized even in hard soil conditions; power consumption is reduced; the piles are not easily deformed or damaged; due to the key embedding of torsional vibration on the basis of linear vibration, the dynamic load and noise transmitted to the surrounding environment of the pile are very small, avoiding the impact on the surrounding environment; especially for marine driving and pulling piles, the two-dimensional dynamic drive vibration driving and pulling pile scheme can effectively protect marine life from the impact and avoid the adverse effects on the marine ecological environment during the vibration driving and pulling pile process, thus protecting the environment. Attached Figure Description
[0027] Figure 1 This is a structural principle and dynamic model of a large-scale, two-dimensional, decoupled, high-efficiency, and environmentally friendly vibratory pile hammer with dynamic linkage drive.
[0028] Figure 2 This is a front view schematic diagram of a large-scale, two-dimensional, power-driven, decoupled, high-efficiency, and environmentally friendly vibratory pile hammer.
[0029] Figure 3 This is a schematic diagram of a linkage linear vibration exciter group and a linkage torsional vibration exciter group for a large-scale two-dimensional power linkage driven decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer.
[0030] Figure 4 This is a schematic diagram of a top view of another type of linkage linear vibration exciter group and linkage torsional vibration exciter group for a large-scale two-dimensional power linkage drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer.
[0031] In the figure: 1. Vibratory hammer body; 2. Pile body; 3. Four sets of linked linear vibration exciter groups; 4. Gear meshing equal strong coupling mechanism of four sets of linked linear vibration exciter groups; 5. Four sets of linked torsional vibration exciter groups; 6. Gear meshing equal strong coupling mechanism of four sets of linked torsional vibration exciter groups. Detailed Implementation
[0032] A large-scale, two-dimensional, power-driven, decoupled, high-efficiency, and environmentally friendly vibratory pile hammer, such as... Figure 1As shown, the basic mechanical model structure of this large-scale two-dimensional power-driven decoupled high-efficiency and environmentally friendly vibratory pile hammer mainly includes a vibratory hammer body 1, a pile body 2, a linkage linear vibration exciter group, and a linkage torsional vibration exciter group. The linkage linear vibration exciter group includes multiple linear vibration exciter groups. Each linear vibration exciter in each group is synchronized through a strong coupling mechanism, and the groups are connected for synchronization through couplings. The linkage torsional vibration exciter group is equipped with multiple torsional vibration exciters. Each torsional vibration exciter is arranged in multiple rows and / or columns. Adjacent torsional vibration exciters are synchronized through a strong coupling mechanism.
[0033] In this invention, the linked linear vibration exciter group and the linked torsional vibration exciter group provide a two-dimensional power source. 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.
[0034] 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.
[0035] As a specific embodiment, such as Figure 2 and Figure 3 As shown, the linked linear vibration exciter group and the linked torsional vibration exciter group are decoupled and symmetrical about the axis of the vibratory hammer 1 and the pile 2. The linked linear vibration exciter group uses four linked linear vibration exciter groups 3, sharing two shafts and a "gear meshing equal-strength coupling mechanism 4" to achieve linked drive. The mass moment of each linear vibration exciter is m. s rs The resultant force of the exciter in the direction perpendicular to the axial direction of the vibratory hammer 1 and the pile 2 is 0, while the excitation force along the axial direction of the vibratory hammer 1 and the pile 2 is positively superimposed to achieve the linear vibration function in the axial direction of the vibratory hammer 1 and the pile 2.
[0036] Furthermore, multiple "four-group linkage linear vibration exciter groups" can be used and coupled through a strong coupling mechanism to achieve the linear vibration function of multi-unit linkage drive in the axial direction of the vibratory hammer 1 and the pile 2.
[0037] The linked torsional vibration exciter group adopts four linked torsional vibration exciter groups 5, which includes four groups of torsional vibration exciters coupled to each other in the torsional direction. Strong coupling and linkage drive are achieved through a "gear meshing and strong coupling mechanism 6 of the four linked torsional vibration exciter groups"; the eccentric rotor mass torque of each torsional vibration exciter is m0r; such as... Figure 3 As shown, the gear meshing equal coupling mechanism 6 of the four sets of linked torsional vibration exciter groups is only set at one end of the rotating shaft of each torsional vibration exciter. Through the gear meshing equal coupling mechanism 6 of the four sets of linked torsional vibration exciter groups, the synchronous rotation of different torsional vibration exciters is achieved. The other end of the torsional vibration exciter is synchronously rotated through the rotating shaft. Figure 4 As shown, the gear meshing equal strong coupling mechanism 6 of the four sets of linked torsional vibration exciter groups is set at both ends of the rotating shaft of each torsional vibration exciter. Only one torsional vibration exciter's rotating shaft needs to be connected to both ends, while the rotating shafts of the other torsional vibration exciters are disconnected. The synchronous rotation of all torsional vibration exciters is achieved through the gear meshing equal strong coupling mechanism 6 of the four sets of linked torsional vibration exciter groups.
[0038] When the four sets of torsional vibration exciters coupled in two directions operate synchronously, the excitation forces 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 that are completely positively superimposed around the circumferential direction of the axis of the vibrating hammer 1 and the pile 2 are formed, thereby realizing the torsional vibration function of the vibrating hammer 1 and the pile 2 in the circumferential direction of their own axis of linkage drive.
[0039] Furthermore, multiple "four-group linked torsional vibration exciter groups 5" can be used and coupled through a strong coupling mechanism to achieve the torsional vibration function of multi-unit linked drive of the vibratory hammer 1 and the pile 2. The angle θ between the rotation axis of the "four-group linked linear vibration exciter group 3" and the perpendicular line to the rotation axis of the "four-group linked torsional vibration exciter group 5" is 0-90 degrees. The positions of the four-group linked linear vibration exciter group 3 and the four-group linked torsional vibration exciter group 5 can be interchanged.
Claims
1. A large-scale, two-dimensional, power-driven, decoupled, high-efficiency, and environmentally friendly vibratory pile hammer, characterized in that, Including linked linear vibration exciter groups and linked torsional vibration exciter groups; The linked linear vibration exciter group provides axial linear vibration excitation force, and the linked 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 linked linear vibration exciter group includes multiple linear vibration exciter groups; each linear vibration exciter in each linear vibration exciter group is synchronized through a strong coupling mechanism, and the linear vibration exciter groups are connected and synchronized through couplings. The linkage torsional vibration exciter group is equipped with multiple sets of torsional vibration exciters; each torsional vibration exciter is arranged in multiple rows and / or multiple columns; adjacent torsional vibration exciters are synchronized through a strong coupling mechanism.
2. The large-scale two-dimensional power linkage 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 large-scale two-dimensional power linkage drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer according to claim 1, characterized in that, The linked linear vibration exciter group and the linked torsional vibration exciter group are arranged symmetrically about the axis of the vibrating hammer (1) and the pile (2), respectively.
4. The large-scale two-dimensional power linkage drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer according to claim 1, characterized in that, The linear vibration exciter group includes at least two linear vibration exciters; each linear vibration exciter is equipped with an eccentric rotor; when the number of linear vibration exciters is even, the whole is symmetrical about the axis of the vibration hammer (1) in the axial direction, the eccentric rotors of each linear vibration exciter have the same mass moment, and the phases of each adjacent eccentric rotor are symmetrical and they rotate in opposite directions; when the number of linear vibration exciters is odd, the whole is symmetrical about the axis of the vibration hammer (1) in the axial direction; the phases of each adjacent eccentric rotor are symmetrical and they rotate 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. Between different linear vibration exciter groups, the linear vibration exciters located on the same straight line have eccentric rotors rotating in the same phase and direction.
5. The large-scale two-dimensional power linkage drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer according to claim 1, characterized in that, The torsional vibration exciter includes multiple rotating shafts, and adjacent rotating shafts are synchronized through a strong coupling mechanism; each rotating shaft has an eccentric rotor arranged at both ends, the two eccentric rotors have the same mass moment, a phase difference of 180°, and rotate in the same direction; when the eccentric rotors on the two vertically adjacent rotating shafts at the same end rotate to the axial direction of the vibrating hammer, the phase difference is 180°.
6. The large-scale two-dimensional power linkage drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer according to claim 5, characterized in that, Both ends of the rotating shaft are synchronized through a strong coupling mechanism. One rotating shaft is connected to the two eccentric rotors, while the other rotating shafts are disconnected in the middle. Alternatively, one end of the rotating shaft is synchronized through a strong coupling mechanism, while the other end of the rotating shaft is not connected to the strong coupling mechanism.
7. The large-scale two-dimensional dynamic linkage drive decoupled arrangement high-efficiency and environmentally friendly vibratory pile hammer according to claim 1, characterized in that, The angle between the rotation axis of the linked linear vibration exciter group and the perpendicular line to the rotation axis of the linked torsional vibration exciter group is 0-90 degrees.