Buffer structure for wave power plant
The integration of a buffer assembly at the counterweight's upward stroke in wave power plants addresses impact-related issues, improving operational stability and durability by absorbing energy and reducing mechanical noise and wear.
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2026-01-29
- Publication Date
- 2026-03-19
AI Technical Summary
Wave power plants face issues with high-speed counterweight impacts causing mechanical noise, vibration, structural damage, and reduced operational stability due to lack of adequate energy absorption and buffering structures, leading to premature wear and failure of mechanical components.
A buffer assembly is integrated at the end of the counterweight's upward stroke, comprising a support plate with distributed buffer bodies to absorb impact energy, reducing collisions and vibrations, and a pulley system with lever mechanisms to convert wave energy into electrical energy efficiently.
The buffer assembly mitigates noise and vibration, extends component lifespan, and enhances operational stability by absorbing impact energy, ensuring smooth and durable operation under irregular sea conditions.
Smart Images
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Abstract
Description
Technical field
[0001] The invention relates to a shaft power plant, in particular a buffer structure for a shaft power plant, in which a buffer assembly within a housing absorbs the inertial shock of the rising counterweight in order to reduce impact noise and improve operational stability and service life. State of the art
[0002] Wave energy generation is an emerging technology in the field of renewable marine energy. It converts the continuous kinetic energy of wave motion into electrical energy and holds enormous development potential. However, since waves are inherently irregular and pulsating dynamic loads that fluctuate significantly depending on sea state, tides, seasons, and wind direction, wave power plants often face numerous challenges in practical operation.
[0003] In light of the aforementioned problems, the applicant in the present case filed utility model no. 113210512 entitled "Improved structure of a wave power plant", which has already been granted and published. Although the aforementioned structure allows for a return to restoring power by means of a counterweight and increases the possibility of continuous operation, there is still room for further improvements under real marine conditions.
[0004] First, the wave impact exhibits instantaneous peak values, which allows the striking rod, under the lever mechanism, to generate a high speed of movement in a short time. This, in turn, causes the rope to rapidly pull the counterweight upwards. When the counterweight reaches the end of its stroke, in the absence of an adequate energy absorption and buffering structure, inertia can lead to collisions or hard contact at the end of the upward stroke. This causes instantaneous noise and vibration and can also cause a sudden increase in rope tension, resulting in an impact load on the first fixed pulley, the second fixed pulley, and their support rods.
[0005] Secondly, this hard impact without a damping mechanism will have a number of serious negative consequences: The violent collision between the metallic counterweight and the pulley system generates enormous mechanical noise, which constitutes a significant noise nuisance in a quiet coastal environment. Furthermore, the repeated and high-intensity impact forces are transmitted directly to the bearings of the pulleys, the support rods, and the rope connection points. This leads to stress concentrations, deformation, or even fractures of the affected mechanical parts, drastically reducing the service life and durability of the entire system. In addition, the violent vibrations can impair the operational stability of precise electronic components in the power generation plant and the control module, which in turn reduces power generation efficiency and the overall reliability.
[0006] Thirdly, if the cable were to break due to the excessive tensile force at the momentary impact, the counterweight could fall uncontrollably, causing serious damage to the base of the housing. For a shaft power plant designed for long-term stable operation, this undoubtedly constitutes a structural defect that must be rectified immediately. Object of the invention
[0007] The object of the invention is to provide a buffer structure for a wave power system, which is arranged along the cable at the end of the counterweight's upward stroke and absorbs the impact energy through the elastic buffering action of a buffer assembly. This reduces the potential collision of the counterweight at the end of the upward stroke, as well as the resulting noise and associated vibrations.
[0008] This problem is achieved through the technical solution of the invention, which includes: a housing consisting of a first plate and a second plate, wherein a third plate is provided between each of the two sides of the first plate and the second plate, wherein the underside of the first plate is provided with an inlet and the underside of the second plate with an outlet; a wave energy collector comprising a support shaft, both ends of which are connected to the third plates via a shaft bearing, wherein a wave baffle plate and a striker extend from the support shaft, the latter being perpendicular to each other, the wave baffle plate being located near the inlet and running parallel to it; a pulley system comprising a first connecting rod and a second connecting rod, both ends of which are connected to the third plates, wherein a first fixed pulley and a second fixed pulley are arranged in the middle of the first connecting rod and the second connecting rod, wherein the first connecting rod is in front of the striking rod and the second connecting rod is close to the top of the housing, wherein the pulley system further comprising a rope, one end of which is connected to a counterweight, while the other end is successively passed through the second fixed pulley and the first fixed pulley and is attached to the end of the striking rod; a buffer assembly comprising a support plate, both ends of which are connected to the third plates, wherein a through-hole is provided in the center of the support plate for passing the cable through it, and wherein several buffer bodies are arranged below the support plate, distributed around the through-hole; and a power generating device that receives the energy transmitted by the striking bar and converts it into electrical energy, wherein a shaft enters the housing through the inlet and strikes the shaft impact plate, causing the shaft impact plate to perform a lever action around the support shaft and rotate forward into a horizontal position, the striking rod simultaneously pivoting backward into a vertical position, the force arm of the striking rod being longer than that of the shaft impact plate, thus increasing the speed of movement of the striking rod and giving it a longer stroke, the striking rod pivoting backward and pulling the rope, thereby raising the counterweight at the other end, the several buffer bodies being provided as shock absorbers when the counterweight is raised and contacts the multiple buffer bodies, and once the shaft has completed its impact, the counterweight pulls the rope downward due to gravity, thereby retracting the striking rod from the vertical to the horizontal position.while the wave impact plate moves back from the horizontal to the vertical position synchronously with the impact bar.
[0009] To illustrate the above-mentioned problem, effects and features of the present invention, they are explained below with reference to the accompanying drawings: Brief description of the drawings Fig. Figure 1 shows an exploded view of the preferred embodiment of the invention. Fig. Figure 2 shows an enlarged representation of the wave energy collector according to Fig. 1. Fig. Figure 3 shows an enlarged representation of the pulley system according to Fig. 1, where the support plate 61 is represented by dashed lines. Fig. Figure 4 shows a partially assembled view of the preferred embodiment of the invention, wherein the support plate 61 is represented by dashed lines. Fig. Figure 5 shows a schematic representation of the movement of the first slide 112 and the second slide 122 of the preferred embodiment of the invention, wherein the housing 1 is represented by dashed lines and the other components are omitted from the drawing. Fig. Figure 6 shows a schematic representation of the movement of the wave energy collector 2 of the preferred embodiment of the invention, wherein the first slide 112, the second slide 122, the tube 37 and the buffer assembly are omitted. Fig. Figure 7 shows a schematic representation of the movement of the wave energy collector 2 and the pulley 3 according to Fig. 6. Fig. Figure 8 shows a side view according to Fig. 6. Fig. Figure 9 shows a perspective view of the flange pull 3 of another preferred embodiment of the invention. Fig. Figure 10 shows a schematic representation of the movement of the wave energy collector 2 and the pulley 3 according to Fig. 9. Fig. Figure 11 shows a perspective view of a further preferred embodiment of the invention. Fig. Figure 12 shows a block diagram of the preferred embodiment of the invention. Ways to implement the invention
[0010] As in the Fig. 1, Fig. 4 and Fig. As shown in Figure 11, the buffer structure for the wave power system of the invention essentially comprises: a housing 1, a wave energy collector 2, a pulley 3, a power generation device 4, a control module 5, and the buffer assembly 6 characteristic of this case. Specifically, the invention converts the instantaneous thrust force generated by the waves entering the housing 1 into a mechanical displacement by means of the lever movement of the wave energy collector 2. In this process, impact energy is transferred to the energy storage device 41 via the impact rod 24, and the counterweight 36 is pulled via the rope 35 and the pulley 3 to form a return mechanism.The buffer assembly 6 is arranged at the end of the upward stroke of the counterweight 36 to absorb the inertial impact energy of the counterweight 36 moving upwards at high speed, to reduce the impact noise and vibrations, and to mitigate the instantaneous peak load on the rope 35, the first fixed pulley 33, the second fixed pulley 34, the first connecting rod 31, and the second connecting rod 32, thereby increasing the overall durability and operational stability.
[0011] First, the basic structure of the present invention will be described with reference to Fig. 5 explained. The housing 1 consists of a first plate 11 and a second plate 12, which form the front and rear main bodies. A third plate 13 is provided between each of their two sides to form a receiving chamber. The underside of the first plate 11 is provided with an inlet 111 for the inflow of seawater, while the underside of the second plate 12 is correspondingly provided with an outlet 121 for the outflow of seawater. Due to the opposing arrangement of the inlet 111 and outlet 121, external sea waves can enter the interior of the housing 1 through the inlet 111, form an impact field, and then exit through the outlet 121, thereby establishing a repeatable flow path. To control the water flow, the first plate 11 is equipped at the inlet 111 with a first slide valve 112 and a first drive mechanism 113.The second plate 12 is equipped at the outlet 121 with a second valve 122 and a second drive mechanism 123. The first drive mechanism 113 and the second drive mechanism 123 receive control signals to open or close the first valve 112 and the second valve 122 by raising, lowering, or rotating them. By controlling the opening and closing of the valves 112 and 122, the housing 1 can be closed during maintenance, in the event of anomalies, or during adverse sea conditions to protect the internal mechanisms. Furthermore, the inflow and outflow of water can be adjusted under varying wave conditions to reduce backflow interference and maintain the wave baffle plate 23 under optimal load conditions. In addition, the underside of the housing 1 is provided with several support legs 14. Fig. 11 and Fig. 12) Each support leg 14 is equipped with a third drive mechanism 141 that receives control signals to extend or retract the support leg 14. This adjusts the height of the housing 1 to respond to tidal changes. That is, by adjusting the height of the housing 1, the position of the inlet 111 relative to the sea level can be adapted to different tidal levels and wave heights, thereby increasing the stability and predictability of kinetic energy generation.
[0012] The wave energy collector 2 ( Fig. 2) is arranged in the housing 1 and has a support shaft 21, both ends of which are connected to the third plate 13 via a shaft bearing 22. Due to the bearing arrangement in the shaft bearings 22, the support shaft 21 forms a rotatable support relative to the third plates 13, allowing the wave energy collector 2 to pivot back and forth under the influence of the wave thrust force. A wave impact plate 23 and a striker 24 extend from the support shaft 21, running perpendicular to each other. The wave impact plate 23 is located near the inlet 111 and runs parallel to it, so that the waves entering through the inlet 111 act directly on the force-bearing surface of the wave impact plate 23 and generate a torque. A striking projection 25 is provided at the end of the striker 24 to transfer the kinetic energy to the energy storage device 41 of the power generation device 4.The impact projection 25 can be configured as a block, bolt, or other structure capable of providing a concentrated contact force to more efficiently transfer the impact energy into the energy storage device 41. Structurally, the force arm of the impact rod 24 is longer than that of the wave impact plate 23, thus utilizing the lever principle to increase the velocity of movement at the end. As the wave impact plate 23 is rotated by the wave thrust force, the impact rod 24 can therefore strike the energy storage device 41 at a higher final velocity, generating a repeatable impact in each reciprocating cycle.
[0013] The pulley 3 ( Fig. 3 and Fig. 9) is arranged in the housing 1 and has the first connecting rod 31 and the second connecting rod 32, both ends of which are connected to the third plates 13. The first fixed pulley 33 and the second fixed pulley 34 are arranged in the middle of the first connecting rod 31 and the second connecting rod 32. The first connecting rod 31 and the second connecting rod 32 serve as load-bearing support elements for the pulleys, so that the first fixed pulley 33 and the second fixed pulley 34 form fixed guide points within the housing 1 to establish the running path of the rope 35. One end of the rope 35 is connected to the counterweight 36, while the other end is guided successively through the second fixed pulley 34 and the first fixed pulley 33 and attached to the end of the striking rod 24.By guiding the rope 35, the angular displacement of the striking rod 24 can be converted into a linear displacement of the counterweight 36, with the lifting movement of the counterweight 36 exerting a return force on the striking rod 24. When the striking rod 24 pivots backward due to the wave force, the counterweight 36 is pulled upward via the rope 35. Conversely, when the wave retracts, the force of gravity on the counterweight 36 pulls the striking rod 24 back to its initial position via the rope 35. This synchronously returns the wave impact plate 23 to the ready position for the next wave impact. The pulley system 3 also includes a tube 37, which is fixed in the housing 1 and serves to hold the counterweight 36, allowing the counterweight 36 to move up and down within the tube 37 in a limited manner to prevent collisions with other components in the housing 1.By guiding and limiting the tube 37, not only is the swiveling and oscillation of the counterweight 36 reduced during the up and down movement, but the lateral tensile loads on the rope 35 caused by the swiveling are also minimized, which further increases the operational stability of the rope 35 and the fixed pulleys 33, 34.
[0014] The core feature of the invention, the buffer assembly 6, is explained below. As in the Fig. 3 and Fig. As shown in Figure 4 (where the position of the support plate 61 is indicated by a dashed line), the buffer assembly 6 is located below the pulley 3 and at the end of the upward stroke of the counterweight 36 to provide energy absorption and buffering when the counterweight 36 is rapidly raised to the end of its stroke. More precisely, the arrangement of the buffer assembly 6 corresponds to the position where the counterweight 36 can ascend at high speed and is just about to reach the upper roller support area or the structural boundary area. This allows it to absorb energy before the counterweight 36 reaches the end of its stroke, thus preventing a hard impact directly on the metallic support elements. The buffer assembly 6 has a support plate 61, both ends of which are rigidly connected to the third plates 13 on both sides of the housing 1, forming a horizontal support structure.The support plate 61 can be stably connected to the third plates 13 by screwing, riveting, or other fastening methods to ensure that it does not displace under load and that the compression path of the buffer bodies 63 remains predictable. A through-hole 62 is provided in the center of the support plate 61 to guide the cable 35 through it. This guides the direction of movement of the cable 35 at the end of its stroke, reducing the risk of deviations, wear, or cable slippage. In a specific embodiment, the through-hole 62 can be rounded or fitted with a wear-resistant insert to reduce local wear caused by contact between the cable 35 and the edge of the hole during tension changes. Crucially, several buffer bodies 63 are arranged on the side of the support plate 61 facing the counterweight 36, distributed annularly or symmetrically around the through-hole 62.This ring-shaped or symmetrical arrangement results in a more uniform force distribution when the counterweight 36 is pressed against it, thereby reducing deviations, rebound effects, or local wear due to eccentric loading. In this embodiment, the buffer bodies 63 can be designed as helical compression springs or replaced by high-density rubber blocks, hydraulic dampers, or other elastic elements with energy-absorbing properties. When, in heavy seas, the impact rod 24 pulls the cable 35 and rapidly lifts the counterweight 36, the counterweight 36 contacts the buffer bodies 63 shortly before the upper end of its stroke and presses them against it.This results in elastic compression deformation of the buffer bodies 63 to absorb the kinetic energy of the counterweight 36, thus preventing the counterweight 36 from rigidly impacting the support plate 61 or from subjecting the rope 35, the fixed pulleys 33, 34, and the connecting rods 31, 32 to excessive instantaneous peak loads. Furthermore, impact noise is reduced, rebound-induced overtravel and interference are suppressed, and the smoothness and repeatability of the reciprocating motion are improved. Because the buffer bodies 63 provide controllable deformation for energy absorption at the end of the stroke, the tension of the rope 35 increases more smoothly, thereby reducing the shock load on the bearings of the fixed pulleys 33, 34 and the fatigue accumulation of the rope 35, which is particularly advantageous under irregular sea conditions.When the wave recedes or the impact energy is completely released, the counterweight 36 descends under its own gravity. Simultaneously, the return of the buffer bodies 63 from their compressed state provides a supporting return force, thus making the return process of the counterweight 36, the rope 35, and the striking rod 24 smoother, further increasing the overall efficiency of the cycle and structural durability. The power generation device 4 (. Fig. 12) receives the energy transmitted by the impact bar 24 and converts it into electrical energy. It includes an energy storage device 41 and a generator set 42. The energy storage device 41 is attached to the first plate 11 and interacts with the wave energy collector 2. When the wave impact plate 23 is struck by waves, the energy storage device 41 receives the impact of the impact projection 25 of the impact bar 24 and converts the kinetic energy into continuous energy (such as air or water pressure). The energy storage device 41 can be designed as a pneumatic storage device, a hydraulic storage device, or another structure capable of smoothing the instantaneous impact so that the generator set 42 receives drive energy in a more stable form. The energy storage device 41 can be equipped with a spring 43, which serves to accelerate the return of the impact bar 24 after the impact.The restoring force provided by the spring 43 can interact with the restoring tensile force of the counterweight 36 to enable faster retraction of the striking rod 24 and a more stable cycle rhythm. The generator set 42 receives this continuous energy and thus runs continuously to generate electricity.
[0015] The control module 5 ( Fig. 12) is arranged in the housing 1 and includes a battery 51, a wireless receiver 52, and a water level sensor 53. The battery 51 is electrically connected to the power generation device 4 and the various drive mechanisms to store and supply electrical energy. The wireless receiver 52 receives external signals. The water level sensor 53 detects the water level to generate control signals that regulate the opening and closing of the first and second slide gates and the height adjustment of the support legs 14 to ensure that the device operates in optimal condition. Specifically, based on the water level detected by the water level sensor 53, the control module 5 can adjust the extension and retraction of the support legs 14 so that the position of the inlet 111 and the wave impact plate 23 remains within an optimal wave impact zone.In addition, the slide valves 112, 122 can be closed depending on sea conditions or maintenance requirements in order to reduce the stress on the internal components in housing 1 from unnecessary shocks or corrosion and to increase overall reliability.
[0016] The following explains the actual operating procedure of the present invention. As in the Fig. 6, Fig. 7 and Fig. As shown in Figure 8, when a sea wave enters the housing 1 through the inlet 111 and strikes the wave baffle plate 23, the wave baffle plate 23 performs a lever action around the support shaft 21, pivoting from a vertical to a horizontal position. This causes the striking rod 24 to pivot from a horizontal to a vertical position and strike the energy storage element 41 with its striking projection 25. Simultaneously, the pivoting action of the striking rod 24 pulls on the cable 35. The cable 35 is guided over the first pulley 33 and the second pulley 34, rapidly pulling the counterweight 36 upwards within the tube 37. In strong waves, the upward velocity and the inertia of the counterweight 36 increase. When the counterweight 36 reaches the upper end of its stroke, it strikes, as previously described, the buffer bodies 63 of the buffer assembly 6, which absorb the impact and eliminate noise.Furthermore, the energy absorption of the buffer bodies 63 reduces irregular vibrations that could arise from the rebound of the end of the counterweight 36, thereby smoothing the tension changes of the rope 35 in the end region and thus reducing the shock load and wear of the fixed rollers 33, 34. Once the wave action ends, the counterweight 36 moves rapidly downwards due to gravity and the restoring force of the buffer bodies 63. This pulls the rope 35 back in the opposite direction to its initial position, ready for the next impact cycle.
[0017] In another preferred embodiment ( Fig. 9 and Fig.10) The pulley system 3 can further comprise a third connecting rod 32A and a fourth connecting rod 32B, each equipped with a third fixed pulley 34A and a fourth fixed pulley 34B. The rope 35 is guided successively over the fourth, third, second, and first fixed pulleys. By using multiple pulleys, the rope path and torque distribution are modified, allowing the stroke, equivalent force application, or restoring characteristics of the counterweight 36 to be adapted to the design requirements in order to meet the performance requirements of different housing dimensions or different shaft conditions. In this embodiment, the buffer assembly 6 is also arranged below the pulley system (for example, below the support plate 61 or another connecting rod structure) to achieve the same shock-absorbing effect.This means that, regardless of whether there are two or more rollers, the buffer assembly 6 can absorb the end impact and reduce the peak load on the rope 35 and the roller support components, as long as the counterweight 36 reaches the end of the lift at a high upward speed.
[0018] The invention thus relates to a buffer structure for a wave power plant, comprising a housing 1, a wave energy collector 2, a pulley system 3, a buffer assembly 6, and a power generation device 4. The housing 1 has an inlet 111 and an outlet 121. The wave energy collector 2 is arranged in the housing 1 and, upon wave impact, performs a lever movement that actuates the rope 35 of the pulley system 3, causing the rope 35 to move a counterweight 36 back and forth. The buffer assembly 6 is mounted between the third plates 13 of the housing 1. Its support plate 61 is provided with a through-hole 62 for the rope 35, and several buffer bodies 63 are arranged below the support plate 61, distributed around the through-hole 62. These absorb the shock during the upward stroke of the counterweight 36, reduce noise, and prevent hard impact damage.This provides a buffer path at the end of the upward stroke to reduce inertial rebound, thereby improving operational stability and service life. The power generation device 4 receives the transmitted energy for power generation operation. Therefore, the invention can increase durability and reliability and promotes stable long-term operation. Reference symbol list 1 case 11 First record 111 Admission 112 First slide 113 First drive mechanism 12 Second record 121 Outlet 122 Second slider 123 Second drive mechanism 13 Third plate 14 Support leg 141 Third drive mechanism 2 wave energy collector 21 Support shaft 22 shaft bearings 23 Wave impact plate 24 striking bar 25 stroke lead 3 Pulley system 31 First connecting rod 32 Second connecting rod 32A Third connecting rod 32B Fourth connecting rod 33 First fixed role 34 Second fixed role 34A Third fixed roller 34B Fourth fixed roller 35 rope 36 Counterweight 37 pipe 4 Power generating device 41 Energy storage 42 Generator set 43 spring 5 Control module 51 Battery 52 Wireless Receivers 53 Water level sensor 6 Buffer assembly 61 Support plate 62 Through hole 63 buffer bodies
Claims
[1] Buffer structure for wave power plant comprising at least: a housing (1) consisting of a first plate (11) and a second plate (12), wherein a third plate (13) is provided between the two sides of the first plate (11) and the second plate (12), wherein the underside of the first plate (11) is provided with an inlet (111) and the underside of the second plate (12) with an outlet (121); a wave energy collector (2) comprising a support shaft (21) whose two ends are each connected to the third plates (13) via a shaft bearing (22), wherein a wave impact plate (23) and a striker bar (24) extend from the support shaft (21) perpendicular to each other, wherein the wave impact plate (23) is located near the inlet (111) and runs parallel to it; a pulley system (3) comprising a first connecting rod (31) and a second connecting rod (32), both ends of which are connected to the third plates (13), wherein a first fixed pulley (33) and a second fixed pulley (34) are arranged in the middle of the first connecting rod (31) and the second connecting rod (32), wherein the first connecting rod (31) is located in front of the striking rod (24) and the second connecting rod (32) is located near the top of the housing (1), wherein the pulley system (3) further comprises a rope (35), one end of the rope (35) being connected to a counterweight (36), while the other end is successively guided through the second fixed pulley (34) and the first fixed pulley (33) and is attached to the end of the striking bar (24); a buffer assembly (6) comprising a support plate (61) whose two ends are each connected to the third plates (13), wherein a through hole (62) is provided in the center of the support plate (61) for guiding the cable (35) through it, and wherein several buffer bodies (63) are arranged below the support plate (61) distributed around the through hole (62); and a power generating device (4) that receives the energy transmitted by the striking rod (24) and converts it into electrical energy; wherein a wave enters the housing (1) through the inlet (111) and strikes the wave impact plate (23), causing the wave impact plate (23) to perform a lever movement around the support shaft (21) and rotate forward into a horizontal position, while the impact rod (24) simultaneously pivots backward into a vertical position, wherein the force arm of the impact rod (24) is longer than that of the wave impact plate (23), which increases the speed of movement of the striking rod (24), so that the striking rod (24) has a longer stroke, wherein the striking rod (24) pivots backwards and pulls the rope (35), thereby raising the counterweight (36) located at the other end, wherein when the counterweight (36) is raised and touches the multiple buffer bodies (63), these provide shock absorption, wherein once the shaft has completed its impact, the counterweight (36) pulls the rope (35) downwards due to gravity, thereby retracting the striking rod (24) from the vertical to the horizontal position, while the shaft impact plate (23) moves back from the horizontal to the vertical position synchronously with the striking rod (24). [2] Buffer structure for wave power plant according to claim 1, characterized by, that the pulley (3) further includes a tube (37) which is fixed in the housing (1) and serves to hold the counterweight (36), so that the counterweight (36) moves in the tube (37). [3] Buffer structure for wave power plant according to claim 1, characterized by , that the pulley (3) further comprises a third connecting rod (32A) and a fourth connecting rod (32B), which are provided in the middle with a third fixed pulley (34A) and a fourth fixed pulley (34B), wherein the height of the third connecting rod (32A) is between that of the first and the second connecting rod (31, 32), while the fourth connecting rod (32B) is at the same height as the second connecting rod (32), wherein one end of the rope (35) is connected to the counterweight (36), while the other end is guided successively through the fourth fixed pulley (34B), the third fixed pulley (34A), the second fixed pulley (34) and the first fixed pulley (33) and is attached to the end of the striking rod (24). [4] Buffer structure for wave power plant according to claim 1, characterized by , that the power generating device (4) comprises: an energy storage device (41) connected to the wave energy collector (2), wherein, when the wave impact plate (23) is struck by waves, the energy storage device (41) receives the impact of the impact projection (25) of the impact rod (24) and simultaneously the kinetic energy transferred by the impact rod (24) and converts this kinetic energy into continuous energy; and a generator set (42) connected to the energy storage device (41), which receives the continuous energy from the energy storage device (41) and thus runs continuously to generate electricity. [5] Buffer structure for wave power plant according to claim 4, characterized by, that the energy storage device (41) is attached to the first plate and is provided with a spring (43), wherein the spring accelerates the return of the striking rod (24) after the energy transfer to the energy storage device. [6] Buffer structure for wave power plant according to claim 4, characterized by , that the striking bar (24) is provided with a striking projection (25) to strike the energy storage device (4). [7] Buffer structure for wave power plant according to claim 1, characterized by, that the first plate (11) at the inlet (111) is equipped with a first slide (112) and a first drive mechanism (113) and the second plate (12) at the outlet (121) is equipped with a second slide (122) and a second drive mechanism (123), wherein the first drive mechanism (113) and the second drive mechanism (123) receive control signals to control the opening and closing of the first slide (112) and the second slide (122), and the underside of the housing (1) is provided with several support legs (14), each support leg (14) being equipped with a third drive mechanism (141) which receives control signals to extend or retract the support leg (14), thereby adjusting the height of the housing (1). [8] Buffer structure for wave power plant according to claim 7, characterized by, that the first drive mechanism (113) opens and closes the first slide (112) by raising, lowering or rotating, and the second drive mechanism (123) opens and closes the second slide (122) by raising, lowering or rotating. [9] Buffer structure for wave power plant according to claim 8, characterized bya control module (5) arranged in the housing (1) and comprising a battery (51) and a wireless receiver (52), wherein the battery (51) is electrically connected to the power generation device (4) and the first, second and third drive mechanism (113, 123, 141) to store electrical energy and to provide the first, second and third drive mechanism (113, 123, 141) with the electrical energy required for operation, and wherein the wireless receiver (52) is electrically connected to the first, second and third drive mechanism (113, 123, 141) to receive external transmission signals and to generate control signals. [10] Buffer structure for wave power plant according to claim 9, characterized by , that the control module (5) further includes a water level sensor (53) which is electrically connected to the battery (51) and generates control signals according to the water level.