Wave energy power generation device self-adaptive to wave state

Abstract

The utility model belongs to the technical field of wave energy power generation, and relates to a wave energy power generation device self-adaptive to wave states, which comprises a sensor, a self-adaptive adjusting mechanism and a controller, and is characterized in that the sensor is arranged on the water surface outside a shell, is used for detecting the wave height and is in communication connection with the controller; the controller is arranged in the shell and can be used for controlling the operation of a driving motor in the self-adaptive adjusting mechanism by using the received electric signal of the sensor; and the self-adaptive adjusting mechanism is fixedly mounted at the bottom of the inertia counterweight, can do linear reciprocating motion along the center guide column along with the inertia counterweight, and can adjust the adaptive range of the wave energy power generation device to the wave height by adjusting the state of a self-adaptive spring through a driving motor under the control of the controller.

Description

Technical Field

[0001] This utility model belongs to the technical field of wave energy power generation devices, specifically relating to a wave energy power generation device that adapts to wave conditions. Background Technology

[0002] With the development of modern industrial production, the demand for energy is increasing. Existing power generation methods mainly include thermal power, hydropower, and nuclear power. Thermal power, including coal-fired and oil-fired power generation, suffers from high costs, resource scarcity, severe environmental pollution, and is a non-renewable resource. Hydropower requires large investments and long construction times for dams, impacting ecological balance. Nuclear power involves large investments, severe radioactive pollution, difficult waste storage, and high costs. Therefore, people are constantly exploring and developing safe, clean, and renewable new energy sources, such as wind and solar power. Oceans cover 70% of the Earth's surface, and ocean wave energy is inexhaustible. However, human utilization of ocean wave energy is minimal. Utilizing wave energy could solve problems such as energy depletion, environmental pollution, high investment costs, and large land occupation.

[0003] Existing wave power generation equipment primarily involves placing the entire device underwater, relying on the movement of the waves to drive the power generation components. Since most of the internal working parts are submerged, corrosion and safety issues are common, significantly impacting the device's lifespan. Furthermore, wave power generation devices can only convert wave kinetic energy into electrical energy during wave rise or fall, resulting in low energy conversion efficiency. When wave height or period is long, existing wave power generation devices have low sensitivity to smaller waves, making them unable to generate electricity from smaller waves. Conversely, when wave height is high or period is short, existing devices cannot reduce their sensitivity to larger waves.

[0004] Therefore, providing a wave energy generation device that adapts to wave conditions has become an urgent problem to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a wave energy generation device that adapts to wave conditions.

[0006] In order to achieve the purpose of this utility model, the following technical solutions will be adopted.

[0007] An adaptive wave energy generation device includes a shell floating on the water surface; a support frame disposed within the shell; guide columns disposed between a bottom plate and a top plate of the support frame, each guide column including a central guide column at the center point of the bottom plate and at least two spring guide columns arranged around the bottom plate; an inertial counterweight capable of reciprocating along the central guide column and at least two spring guide columns; elastic supports respectively fitted onto at least two spring guide columns and capable of supporting the inertial counterweight; a power transmission mechanism disposed on top of the inertial counterweight, capable of converting the linear reciprocating motion of the inertial counterweight into rotational motion; a flywheel capable of storing the kinetic energy of the rotational motion transmitted by the power transmission mechanism; a motor capable of generating electrical energy driven by the kinetic energy released by the flywheel; and further includes sensors, an adaptive adjustment mechanism, and a controller, wherein:

[0008] A sensor, positioned on the water surface outside the housing, is used to detect wave height and is communicatively connected to the controller.

[0009] The controller, located inside the housing, can control the operation of the adaptive adjustment mechanism using the received electrical signals from the sensor;

[0010] An adaptive adjustment mechanism is fixedly installed at the bottom of the inertial counterweight and can reciprocate linearly along the central guide column with the inertial counterweight. Under the control of the controller, the adaptive spring state can be adjusted by driving the motor to adjust the wave energy generation device's adaptability to wave height.

[0011] As a preferred embodiment of this utility model, the sensor is an acceleration sensor.

[0012] As a preferred embodiment of this utility model, the power transmission mechanism includes a first connecting rod, a second connecting rod, a tail end shaft of the first connecting rod, a tail end shaft of the second connecting rod, a first end shaft, a second end shaft, a first gear transmission mechanism, a second gear transmission mechanism, a first synchronous pulley, a first synchronous belt, a second synchronous pulley, a second synchronous belt, a one-way transmission mechanism, a first mounting bracket, and a second mounting bracket, wherein: the one-way transmission mechanism is composed of a one-way bearing and a bearing end cover fixedly connected to the outer ring of the one-way bearing; the first mounting bracket and the second mounting bracket are correspondingly mounted on the top of the inertial counterweight; the first gear transmission mechanism is disposed in the first mounting bracket, and its input shaft is an interference fit with the tail end of the first connecting rod. A first connecting rod has a tail end shaft, and its output shaft is a first end shaft equipped with a first synchronous pulley. The head end of the first connecting rod is slidably engaged with a first fixed shaft on the central guide post through a sliding groove hole. The first synchronous pulley is connected to the bearing end cover through a first synchronous belt. The inner ring of the one-way bearing is connected to the input end of the flywheel through a transmission shaft. A second gear transmission mechanism is disposed in a second mounting bracket, and its input shaft is a second connecting rod tail end shaft that is interference-fitted with the tail end of the second connecting rod. Its output shaft is a second end shaft equipped with a second synchronous pulley. The head end of the second connecting rod is slidably engaged with a second fixed shaft on the central guide post through a sliding groove hole. The second synchronous pulley is connected to the transmission shaft through a second synchronous belt.

[0013] As a preferred embodiment of this utility model, the first gear transmission mechanism includes a first connecting rod tail end shaft, a first transmission gear, a first intermediate shaft, a second transmission gear, a third transmission gear, a first end shaft, a fourth transmission gear, and a first synchronous pulley, wherein:

[0014] The tail end shaft of the first connecting rod, as the input shaft, is mounted on the upper part of the first mounting bracket via a bearing, and a first transmission gear is mounted on it.

[0015] The first intermediate shaft is mounted in the middle of the first mounting bracket via a bearing, and a second transmission gear and a third transmission gear are mounted on it, with the third transmission gear meshing with the first transmission gear.

[0016] The first end shaft is mounted on the lower part of the first mounting bracket via a bearing. It is provided with a fourth transmission gear and a first synchronous pulley, and the fourth transmission gear meshes with the second transmission gear.

[0017] As a preferred embodiment of this utility model, the second gear transmission mechanism includes a second connecting rod tail end shaft, a fifth transmission gear, a second intermediate shaft, a sixth transmission gear, a seventh transmission gear, a second end shaft, an eighth transmission gear, and a second synchronous pulley, wherein:

[0018] The tail end shaft of the second connecting rod, as the input shaft, is mounted on the upper part of the second mounting bracket via a bearing, and a fifth transmission gear is mounted on it.

[0019] The second intermediate shaft is set in the middle of the second mounting bracket by bearings, and a sixth transmission gear and a seventh transmission gear are provided on it, with the seventh transmission gear meshing with the fifth transmission gear;

[0020] The second end shaft is mounted on the lower part of the second mounting bracket via a bearing. It is equipped with an eighth transmission gear and a second synchronous pulley, and the eighth transmission gear meshes with the sixth transmission gear.

[0021] As a preferred embodiment of this utility model, the first fixed shaft and the second fixed shaft are respectively disposed on the corresponding sides of the central guide post and are coaxially disposed.

[0022] As a preferred embodiment of this utility model, the adaptive adjustment mechanism includes a fixed plate, an adaptive spring, an adaptive spring pressure plate, a drive motor, a lead screw and a lead screw nut, a control module, and an adaptive adjustment frame, wherein:

[0023] A fixing plate is fitted onto the central guide post through a central hole and is fixedly connected to the bottom of the inertial counterweight;

[0024] The control module includes two control modules, which are respectively set at corresponding positions on both sides of the central guide post. The tops of the two control modules are respectively fixedly connected to the bottoms of the fixing plates on both sides of the central guide post, and a drive motor is fixedly fixed to the bottom of each of the two control modules.

[0025] The lead screw and lead screw nut include two lead screws and lead screw nuts respectively disposed on both sides of the control module. The top of each lead screw is fixedly connected to the fixed plate, and its bottom is fixedly connected to the output shaft of the drive motor. The two lead screw nuts are fixedly connected to the adaptive adjustment frame.

[0026] An adaptive spring is fitted onto the central guide post, with its bottom fixedly connected to the base plate and its top connected to the adaptive spring pressure plate.

[0027] An adaptive spring pressure plate is fitted onto the central guide post and fixed in the adaptive adjustment frame.

[0028] In a preferred embodiment of this invention, the drive motor is controlled by the controller.

[0029] As a preferred embodiment of this utility model, the limiter is disposed on the frame of the support frame below the inertial counterweight, and is used to limit the amplitude of the reciprocating motion of the inertial counterweight. Beneficial effects

[0030] This invention improves upon existing wave energy generation devices by providing an adaptive wave energy generation device. When the wave height is low or the wave period is long, the device adjusts its adaptive adjustment mechanism to a stretched state, reducing the elastic coefficient and thus increasing the device's sensitivity to waves to adapt to smaller waves. When the wave height is high or the wave period is short, the device adjusts its adaptive adjustment mechanism to a compressed state, increasing the elastic coefficient and thus reducing the device's sensitivity to waves to adapt to larger waves. Attached Figure Description

[0031] Figure 1 This is a schematic diagram A of the internal structure of the support frame described in this utility model;

[0032] Figure 2 This is a schematic diagram (B) of the internal structure of the support frame described in this utility model;

[0033] Figure 3 This is a schematic diagram A of the power transmission mechanism described in this utility model;

[0034] Figure 4 This is a schematic diagram B of the power transmission mechanism described in this utility model;

[0035] Figure 5 This is a schematic diagram of the adaptive adjustment mechanism described in this utility model;

[0036] Figure 6 This is a partial structural schematic diagram of the adaptive adjustment mechanism described in this utility model. Detailed Implementation

[0037] The present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0038] As an embodiment of this utility model, such as Figures 1 to 6As shown, an adaptive wave energy generation device includes a shell floating on the water surface; a support frame 1 disposed within the shell; guide columns disposed between a bottom plate 102 and a top plate 101 of the support frame 1, the guide columns including a central guide column 3 disposed at the center point of the bottom plate 102 and at least two spring guide columns 4 arranged around the bottom plate 102; an inertial counterweight 2 capable of reciprocating along the central guide column 3 and at least two spring guide columns 4; elastic supports 5 respectively fitted on at least two spring guide columns 4 and capable of supporting the inertial counterweight 2; a power transmission mechanism 7 disposed on the top of the inertial counterweight 2 and capable of converting the linear reciprocating motion of the inertial counterweight 2 into rotational motion; a flywheel 9 capable of storing the kinetic energy of the rotational motion transmitted by the power transmission mechanism 7; a motor 10 capable of generating electrical energy driven by the kinetic energy released by the flywheel 9; and also includes sensors, an adaptive adjustment mechanism 8, and a controller, wherein:

[0039] A sensor, positioned on the water surface outside the housing, is used to detect wave height and is communicatively connected to the controller.

[0040] The controller, located inside the housing, can control the operation of the drive motor 81 in the adaptive adjustment mechanism 8 using the received electrical signals from the sensor.

[0041] The adaptive adjustment mechanism 8 is fixedly installed at the bottom of the inertial counterweight 2 and can reciprocate linearly along the central guide column 3 with the inertial counterweight 2. Under the control of the controller, the adaptive spring 85 can be adjusted by driving the motor 81 to adjust the wave energy generation device to the wave height range.

[0042] As an embodiment of this utility model, the sensor is an acceleration sensor.

[0043] As an embodiment of this utility model, such as Figures 1 to 4As shown, the power transmission mechanism 7 includes a first connecting rod 71, a second connecting rod 72, a first connecting rod tail end shaft 713, a second connecting rod tail end shaft 714, a first end shaft 711, a second end shaft 712, a first gear transmission mechanism 15, a second gear transmission mechanism 23, a first synchronous pulley 13, a first synchronous belt 17, a second synchronous pulley 14, a second synchronous belt 18, a one-way transmission mechanism 19, and a mounting bracket 6. The mounting bracket 6 includes a first mounting bracket 61 and a second mounting bracket 62, which are correspondingly mounted on the top of the inertial counterweight 2. The one-way transmission mechanism 19 is composed of a one-way bearing 191 and a bearing end cover 192 fixedly connected to the outer ring of the one-way bearing 191. The first gear transmission mechanism 15 is disposed in the first mounting bracket 61, and its input shaft is the tail end of the first connecting rod 71. The first connecting rod 713 is an interference fit with the tail end shaft, and the output shaft is a first end shaft 711 with a first synchronous pulley 13. The head end of the first connecting rod 71 is slidably fitted with the first fixed shaft 20 on the central guide post 31 through a sliding groove hole. The first synchronous pulley 13 is connected to the bearing end cover 192 through a first synchronous belt 17. The inner ring of the one-way bearing 191 is connected to the input end of the flywheel 9 through a transmission shaft. The second gear transmission mechanism 23 is set in the second mounting bracket 62, and its input shaft is a second connecting rod 714 with an interference fit with the tail end of the second connecting rod 72. The output shaft is a second end shaft 712 with a second synchronous pulley 14. The head end of the second connecting rod 72 is slidably fitted with the second fixed shaft 21 on the central guide post 31 through a sliding groove hole. The second synchronous pulley 14 is connected to the transmission shaft through a second synchronous belt 18.

[0044] As an embodiment of this utility model, such as Figures 3 to 4 As shown, the gear transmission mechanism A701 includes a first connecting rod tail end shaft 713, a first transmission gear 73, a first intermediate shaft 715, a second transmission gear 77, a third transmission gear 75, a first end shaft 711, a fourth transmission gear 79, and a first synchronous pulley 13, wherein:

[0045] The tail end shaft 713 of the first connecting rod serves as an input shaft and is mounted on the upper part of the first mounting bracket 61 via a bearing. The first transmission gear 73 is mounted on it.

[0046] The first intermediate shaft is mounted in the middle of the first mounting bracket 61 via a bearing, and a second transmission gear 77 and a third transmission gear 75 are mounted on it, with the third transmission gear 75 meshing with the first transmission gear 73.

[0047] The first end shaft 711 is mounted on the lower part of the first mounting bracket via a bearing. A fourth transmission gear 79 and a first synchronous pulley 13 are mounted on it, and the fourth transmission gear 79 meshes with the second transmission gear 77.

[0048] As an embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the second gear transmission mechanism 702 includes a second connecting rod tail end shaft 714, a fifth transmission gear 74, a second intermediate shaft 716, a sixth transmission gear 78, a seventh transmission gear 76, a second end shaft 712, an eighth transmission gear 710, and a second synchronous pulley 14, wherein:

[0049] The tail end shaft 714 of the second connecting rod serves as an input shaft and is mounted on the upper part of the second mounting bracket 62 via a bearing. The fifth transmission gear 74 is mounted on it.

[0050] The second intermediate shaft 716 is mounted in the middle of the second mounting bracket 62 via a bearing, and a sixth transmission gear 78 and a seventh transmission gear 76 are mounted on it, with the seventh transmission gear 76 meshing with the fifth transmission gear 74.

[0051] The second end shaft 712 is mounted on the lower part of the second mounting bracket 62 via a bearing. It is provided with an eighth transmission gear 710 and a second synchronous pulley 14, and the eighth transmission gear 710 meshes with the sixth transmission gear 78.

[0052] As an embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the first fixed shaft 20 and the second fixed shaft 21 are respectively disposed on the corresponding sides of the central guide post 31 and are coaxially disposed.

[0053] As an embodiment of this utility model, such as Figure 5 and Figure 6 As shown, the adaptive adjustment mechanism includes a fixed plate 82, an adaptive spring 85, an adaptive spring pressure plate 89, a drive motor 81, a lead screw 86 and a lead screw nut 87, a control module 84, and an adaptive adjustment frame 83, wherein:

[0054] The fixing plate 82 is sleeved on the central guide post 31 through the central hole and is fixedly connected to the bottom of the inertial counterweight 2;

[0055] The control module 84 includes two control modules 84, which are respectively set at corresponding positions on both sides of the central guide post 31. The tops of the two control modules 84 are respectively fixedly connected to the bottoms of the fixing plates 82 on both sides of the central guide post 31, and a drive motor 81 is fixedly fixed to the bottom of each of the two control modules 84.

[0056] The lead screw 86 and lead screw nut 87 include two lead screws 86 and lead screw nuts 87 respectively disposed on both sides of the control module 84. The top of each lead screw 86 is fixedly connected to the fixed plate 82, and its bottom is fixedly connected to the output shaft of the drive motor 81. The two lead screw nuts 87 are fixedly connected to the adaptive adjustment frame 83.

[0057] An adaptive spring 85 is fitted onto the central guide post 31, with its bottom fixedly connected to the base plate 102 and its top connected to the adaptive spring pressure plate 89.

[0058] An adaptive spring pressure plate 89 is fitted onto the central guide post 31 and fixed in the adaptive adjustment frame 83.

[0059] As an embodiment of this utility model, such as Figure 5 and Figure 6 As shown, the drive motor 81 is controlled by the controller.

[0060] As an embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the limiter 22 is disposed on the side of the support frame 1 below the inertial counterweight 2, and is used to limit the amplitude of the reciprocating motion of the inertial counterweight 2.

[0061] As an embodiment of this utility model, such as Figures 1 to 6 As shown, when the wave height is low or the wave period is long, the controller in an adaptive wave energy power generation device drives the drive motor 81 in the adaptive adjustment mechanism 8 to run according to the detection signal of the sensor, and adjusts the adaptive spring 85 to the stretched state, reducing the elastic coefficient, thereby improving the device's sensitivity to sea waves to adapt to smaller waves.

[0062] As an embodiment of this utility model, such as Figures 1 to 6 As shown, when the wave height is high or the wave period is short, the controller in an adaptive wave energy power generation device drives the drive motor 81 in the adaptive adjustment mechanism 8 to run according to the detection signal of the sensor, and adjusts the adaptive spring 85 to the compression state, thereby increasing the elastic coefficient and reducing the sensitivity of the device to the waves to adapt to larger waves.

Claims

1. A wave energy generation device adaptable to wave conditions, comprising a shell floating on the water surface; a support frame disposed within the shell; guide columns disposed between a bottom plate and a top plate of the support frame, the guide columns including a central guide column disposed at the center point of the bottom plate and at least two spring guide columns arranged around the bottom plate; an inertial counterweight capable of reciprocating along the central guide column and at least two spring guide columns; elastic supports respectively fitted onto at least two spring guide columns and capable of supporting the inertial counterweight; a power transmission mechanism disposed on top of the inertial counterweight capable of converting the linear reciprocating motion of the inertial counterweight into rotational motion; a flywheel capable of storing the kinetic energy of the rotational motion transmitted by the power transmission mechanism; and a motor capable of generating electrical energy driven by the kinetic energy released by the flywheel; characterized in that: It also includes sensors and adaptive adjustment mechanisms, as well as a controller, wherein: A sensor, positioned on the water surface outside the housing, is used to detect wave height and is communicatively connected to the controller. The controller, located inside the housing, can use the received electrical signals from the sensor to control the operation of the drive motor in the adaptive adjustment mechanism; An adaptive adjustment mechanism is fixedly installed at the bottom of the inertial counterweight and can reciprocate linearly along the central guide column with the inertial counterweight. Under the control of the controller, the adaptive spring state can be adjusted by driving the motor to adjust the wave energy generation device's adaptability to wave height.

2. The wave energy generation device with adaptive wave conditions according to claim 1, characterized in that: The sensor is an accelerometer.

3. The wave energy generation device with adaptive wave state according to claim 1, characterized in that: The power transmission mechanism includes a first connecting rod, a second connecting rod, a first connecting rod tail end shaft, a second connecting rod tail end shaft, a first end shaft, a second end shaft, a first gear transmission mechanism, a second gear transmission mechanism, a first synchronous pulley, a first synchronous belt, a second synchronous pulley, a second synchronous belt, a one-way transmission mechanism, a first mounting bracket, and a second mounting bracket. The one-way transmission mechanism is composed of a one-way bearing and a bearing end cap fixedly connected to the outer ring of the one-way bearing. The first and second mounting brackets are correspondingly mounted on top of the inertial counterweight. The first gear transmission mechanism is housed in the first mounting bracket, and its input shaft is the first connecting rod tail end shaft, which is interference-fitted with the tail end of the first connecting rod. The output shaft is a first end shaft equipped with a first synchronous pulley; the head end of the first connecting rod is slidably engaged with a first fixed shaft on the central guide post through a sliding groove hole; the first synchronous pulley is connected to the bearing end cover through a first synchronous belt; the inner ring of the one-way bearing is connected to the input end of the flywheel through a transmission shaft; the second gear transmission mechanism is disposed in a second mounting bracket, its input shaft is a second connecting rod tail end shaft that is interference-fitted with the tail end of the second connecting rod, and its output shaft is a second end shaft equipped with a second synchronous pulley; the head end of the second connecting rod is slidably engaged with a second fixed shaft on the central guide post through a sliding groove hole; the second synchronous pulley is connected to the transmission shaft through a second synchronous belt.

4. The wave energy generation device with adaptive wave conditions according to claim 3, characterized in that: The first gear transmission mechanism includes a first connecting rod tail end shaft, a first transmission gear, a first intermediate shaft, a second transmission gear, a third transmission gear, a first end shaft, a fourth transmission gear, and a first synchronous pulley, wherein: The tail end shaft of the first connecting rod, as the input shaft, is mounted on the upper part of the first mounting bracket via a bearing, and a first transmission gear is mounted on it. The first intermediate shaft is mounted in the middle of the first mounting bracket via a bearing, and a second transmission gear and a third transmission gear are mounted on it, with the third transmission gear meshing with the first transmission gear. The first end shaft is mounted on the lower part of the first mounting bracket via a bearing. It is provided with a fourth transmission gear and a first synchronous pulley, and the fourth transmission gear meshes with the second transmission gear.

5. The wave energy generation device with adaptive wave state according to claim 3, characterized in that: The second gear transmission mechanism includes a second connecting rod tail end shaft, a fifth transmission gear, a second intermediate shaft, a sixth transmission gear, a seventh transmission gear, a second end shaft, an eighth transmission gear, and a second synchronous pulley, wherein: The tail end shaft of the second connecting rod, as the input shaft, is mounted on the upper part of the second mounting bracket via a bearing, and a fifth transmission gear is mounted on it. The second intermediate shaft is set in the middle of the second mounting bracket by bearings, and a sixth transmission gear and a seventh transmission gear are provided on it, with the seventh transmission gear meshing with the fifth transmission gear; The second end shaft is mounted on the lower part of the second mounting bracket via a bearing. It is equipped with an eighth transmission gear and a second synchronous pulley, and the eighth transmission gear meshes with the sixth transmission gear.

6. The wave energy generation device with adaptive wave state according to claim 3, characterized in that: The first fixed shaft and the second fixed shaft are respectively disposed on the corresponding sides of the central guide post, and are coaxially disposed.

7. The wave energy generation device with adaptive wave state according to claim 1, characterized in that: The adaptive adjustment mechanism includes a fixed plate, an adaptive spring, an adaptive spring pressure plate, a drive motor, a lead screw and lead screw nut, a control module, and an adaptive adjustment frame, wherein: A fixing plate is fitted onto the central guide post through a central hole and is fixedly connected to the bottom of the inertial counterweight; The control module includes two control modules, which are respectively set at corresponding positions on both sides of the central guide post. The tops of the two control modules are respectively fixedly connected to the bottoms of the fixing plates on both sides of the central guide post, and a drive motor is fixedly fixed to the bottom of each of the two control modules. The lead screw and lead screw nut include two lead screws and lead screw nuts respectively disposed on both sides of the control module. The top of each lead screw is fixedly connected to the fixed plate, and its bottom is fixedly connected to the output shaft of the drive motor. The two lead screw nuts are fixedly connected to the adaptive adjustment frame. An adaptive spring is fitted onto the central guide post, with its bottom fixedly connected to the base plate and its top fixedly connected to the adaptive spring pressure plate. An adaptive spring pressure plate is fitted onto the central guide post and fixed in the adaptive adjustment frame.

8. The wave energy generation device with adaptive wave state according to claim 7, characterized in that: The drive motor is controlled by the controller.

9. A wave energy generation device with adaptive wave conditions according to claim 7, characterized in that: The limiter (22) is set on the frame of the support frame (1) below the inertial counterweight (2) to limit the amplitude of the reciprocating motion of the inertial counterweight (2).

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