A leaf spring boundary-constrained self-regulating bistable wave energy converter

Abstract

A leaf spring boundary-constrained self-adjusting bistable wave energy converter includes a float 1, a telescopic sealing sleeve 2, a fixing member 3, a main transmission mechanism 4, an auxiliary transmission mechanism 5, a self-adjusting bistable mechanism 6, a motion adjustment mechanism 7, a power generation mechanism 8, and a stabilizing mechanism 9. The main transmission mechanism 4 is used to convert wave energy into kinetic energy capable of relative motion when the float 1 moves with waves. The auxiliary transmission mechanism 5 is used to assist the transmission of the main transmission mechanism 4. The self-adjusting bistable mechanism 6 is used to improve the low-frequency motion response of the float 1. The motion adjustment mechanism 7 is used to convert the linear motion of the main transmission mechanism 4 relative to the float 1 into rotational motion. The power generation mechanism 8 is used to generate electricity. The stabilizing mechanism 9 is used to ensure that the leaf spring boundary-constrained self-adjusting bistable wave energy converter has sufficient restoring torque to prevent it from tipping over. The present invention can achieve efficient power generation under small wave excitation, and its compact structure facilitates production, installation, transportation, and use.

Description

Technical Field

[0001] The present invention belongs to the field of renewable energy in marine engineering, and in particular relates to a leaf spring boundary-constrained self-regulating bistable wave energy converter. Background Art

[0002] The Earth's surface is dominated by the ocean, and the ever-present waves hold enormous potential. Wave energy, as a renewable energy source, offers advantages such as cleanliness, high energy flux density, and minimal seasonal impact. Wave energy holds enormous potential, and its rational utilization can help alleviate the increasing pressure on energy consumption associated with rapid global development. The low power generation efficiency of wave energy converters (WECs) is one of the main factors hindering their application. Capturing energy from low-frequency waves is a recognized technical challenge. Introducing a bistable mechanism into a WEC can effectively improve its energy capture efficiency. However, conventional bistable mechanisms require significant wave excitation to overcome their inherent "potential barrier." Due to the irregular nature of waves, WECs are prone to small-amplitude in-well motion under low excitation conditions, resulting in a sharp decline in energy capture efficiency. Wave energy converters designed for axial relative motion require a long axial length for stable operation, and sealing procedures are complex. Furthermore, conventional coil springs struggle to simultaneously maintain tension, compression, and anti-buckling properties. Summary of the Invention

[0003] The main purpose of the present invention is to design a leaf spring boundary-constrained self-regulating bistable wave energy converter with a time-varying self-regulating potential barrier, aiming to solve the above technical problems.

[0004] The present invention provides the following technical solutions:

[0005] A leaf spring boundary constraint self-adjusting bistable wave energy converter, comprising a float 1, a telescopic sealing sleeve 2, a fixing member 3, a main transmission mechanism 4, an auxiliary transmission mechanism 5, a self-adjusting bistable mechanism 6, a motion adjustment mechanism 7, a power generation mechanism 8 and a stabilizing mechanism 9. The auxiliary transmission mechanism 5, the self-adjusting bistable mechanism 6, the motion adjustment mechanism 7, the power generation mechanism 8 and the stabilizing mechanism 9 are all integrated and installed in the float 1. The float 1 is composed of a cylindrical float body 11, an outer top cover 12, an outer bottom cover 13, an inner top cover 14 and an inner bottom cover 15. The outer top cover 12 is mounted on the inner top cover 14, the inner top cover 14 is arranged on the top of the cylindrical float body 11, the inner bottom cover 15 is arranged at the bottom end of the cylindrical float body 11, the outer bottom cover 13 is mounted below the inner bottom cover 15, the telescopic sealing sleeve 2 is set between the outer bottom cover 13 and the fixing member 3, the main transmission mechanism 4 passes through the center of the inner bottom cover 15 and the outer bottom cover 13, the top end of which is fixedly connected to the auxiliary transmission mechanism 5, and the bottom end of which is fixedly connected to the fixing member 3 Disassemble the connection, the auxiliary transmission mechanism 5 carries the motion adjustment mechanism 6, the self-adjusting bistable mechanism 7 and the power generation mechanism 8, the stabilizing mechanism 9 is arranged between the outer bottom cover 13 and the inner bottom cover 15, the main transmission mechanism 4 is arranged in the middle position, the auxiliary transmission mechanism 5 is arranged around the main transmission mechanism 4, the self-adjusting bistable mechanism 6 is arranged on both sides of the main transmission mechanism 4, the motion adjustment mechanism 7 is arranged at the top of the main transmission mechanism 4, the main transmission mechanism 4 is used to convert wave energy into kinetic energy that can move relative to each other when the float 1 moves with the waves, the auxiliary transmission mechanism 5 is used to assist the transmission of the main transmission mechanism 4, the self-adjusting bistable mechanism 6 is used to improve the low-frequency motion response of the float 1, the motion adjustment mechanism 7 is used to convert the linear motion of the main transmission mechanism 4 relative to the float 1 into rotational motion, the power generation mechanism 8 is used to achieve power generation, and the stabilizing mechanism 9 is used to ensure that the leaf spring boundary constraint self-adjusting bistable wave energy converter has sufficient restoring torque to prevent tipping.

[0006] Furthermore, the main transmission mechanism 4 includes a main shaft 41, a first linear bearing 42, a first washer 43, a top end cover 44 and a bottom end cover 45; the main shaft 41 is vertically arranged at the center of the float 1, the first linear bearing 42 is vertically arranged on a section of the main shaft 41 located at the inner bottom cover 15, the first washer 43 is respectively installed on the upper and lower sides of the first linear bearing 42, the cross-section of the top end cover 44 is L-shaped, and the cross-section of the bottom end cover 45 is a concave shape with the bottom protruding, the two first washers 43 are respectively installed in the top end cover 44 and the bottom end cover 45, the bottom end cover 45 is installed on the inner surface of the bottom end of the outer bottom cover 13, and the top end cover 44 is inverted and installed on the upper surface of the inner bottom cover 15.

[0007] Furthermore, the stabilizing mechanism 9 includes a counterweight block 91, a counterweight block carrier 92, a counterweight bearing platform 93 and an auxiliary support member 94; the counterweight block 91 is in the shape of a truncated cone with a larger upper portion and a smaller lower portion, and a cylindrical hole is provided in the middle. The counterweight bearing platform 93 is horizontally installed on the inverted cone surface 131 of the outer bottom cover 13. A circular hole is provided in the middle of the counterweight bearing platform 93 for passing the first linear bearing 42. The counterweight block carrier 92 includes a hollow cylindrical section and a circular plate section. The hollow cylindrical section is sleeved on the outside of the first linear bearing 42. The circular plate section is arranged on the counterweight bearing platform 93. The counterweight block 91 is sleeved on the counterweight block carrier 92. The auxiliary support member 94 is installed on the bottom end cover 45 to auxiliary support the counterweight bearing platform 93.

[0008] Furthermore, the auxiliary transmission mechanism 5 includes an integrated slider 51, a guide rail 52, a second linear bearing 53 and a bearing cover assembly 54; the integrated slider 51 includes a connecting block 511, a first slider 512 and a second slider 513, the second slider 513 is a rectangular parallelepiped with a cylindrical through hole in the center, the top of the spindle 41 is fixedly arranged in the cylindrical through hole, the first slider 512 is provided with two, the two first sliders 512 are cylinders, each of the cylinders is installed with the second linear bearing 53, the two first sliders 512 are respectively arranged at two adjacent corners of the second slider 513, the two first sliders 512 are fixedly arranged through the The connecting block 511 is connected, and the connecting block 511 is fixed to the side wall of the second slider 513; the bearing cover assembly 54 includes a connecting arm 541 and two bearing covers 542, and the two bearing covers 542 are respectively arranged at the top ends of the two first sliders 512 to limit the second linear bearing 53, and the two bearing covers 542 are connected by the connecting arm 541, and the connecting arm 541 is matched with the position of the connecting block 511; the guide rail 52 is vertically arranged in each second linear bearing 53, and the bottom end of the guide rail 52 is fixedly set on the inner bottom cover 15, and the top end of the guide rail 52 is fixedly set on the inner top cover 14.

[0009] Furthermore, the self-adjusting bistable mechanism 6 includes two groups of coil spring assemblies 61, two leaf springs 62, two first pins 63, two leaf spring positioning connectors 64, two second pins 65, a coil spring connector 66, two leaf spring supports 67 and a mounting platform 68; the mounting platform 68 horizontally and longitudinally covers the top of the integrated slider 51, and the coil spring connector 66 horizontally and laterally covers the top of the mounting platform 68, both ends of the coil spring connector 66 are connected to one end of a group of coil spring assemblies 61 through a second pin 65, and the other end of each coil spring assembly 61 is connected to the leaf spring positioning connector 64 through the first pin 63, two leaf springs 62 are vertically arranged on both sides of the leaf spring support 67, the two leaf spring supports 67 are respectively fixed to the inner surfaces of the inner bottom cover 15 and the inner top cover 14, and the two leaf spring positioning connectors 64 are respectively fixed at the middle position of the two leaf springs 62.

[0010] Furthermore, each group of the coil spring assembly 61 includes a first sleeve 611, a coil spring 612 and a second sleeve 613, and the first sleeve 611, the coil spring 612 and the second sleeve 613 are connected in sequence; the first sleeve 611 includes a guide cylindrical hole 6111, a mounting cylinder 6112, a first stabilizing ring 6113, a first hinge joint 6114 and a first pin shaft hole 6115, the guide cylindrical hole 6111 is arranged inside the mounting cylinder 6112, one end of the mounting cylinder 6112 is arranged inside the first stabilizing ring 6113, the first hinge joint 6114 is arranged on the first stabilizing ring 6113, and the first hinge joint 6114 is arranged on the first stabilizing ring 6113. On the outer side of the fixed ring 6113, the first pin hole 6115 is arranged inside the first hinge joint 6114, and the first pin 63 is passed through the first pin hole 6115; the second sleeve 613 includes a second stabilizing ring 6131, a guide column 6132, a mounting head 6133, a second hinge joint 6134 and a second pin hole 6135, one end of the guide column 6132 is arranged inside the second stabilizing ring 6131, the mounting head 6133 is arranged on the side of the second stabilizing ring 6131, the second hinge joint 6134 is arranged at the end of the mounting head 6133, and the second pin hole 6135 is provided. 5 is arranged inside the second hinge joint 6134, the second pin 65 is inserted into the second pin hole 6135, the guide column 6132 is slidably matched with the guide cylindrical hole 6111, the coil spring 612 is sleeved on the mounting cylinder 6112 and guided by the first stabilizing ring 6113 and the second stabilizing ring 6131, and the two ends of the coil spring 612 are respectively fixed in the first stabilizing ring 6113 and the second stabilizing ring 6131 by screws, so that the coil spring 612 has the functions of resisting instability and having both compression and tension functions; the leaf spring positioning connector 64 includes A rectangular through-hole 641, a first mounting slot 642, a third pin hole 643, and a positioning body 644. The positioning body 644 is a rectangular block with the rectangular through-hole 641 defined thereon. A first lug is provided on the side of the positioning body 644. The first mounting slot 642 is defined in the middle of the first lug. The third pin hole 643 is defined on the side of the first lug. The first hinged head 6114 is installed in the first mounting slot 642, and the first pin 63 passes through the first pin hole 6115 and the third pin hole 643. The leaf spring 62 is vertically fixedly disposed in the rectangular through-hole 641.The coil spring connector 66 is flat and includes a connector body 661, a second mounting groove 662 and a fourth pin hole 663. The left and right ends of the connector body 661 are respectively provided with second lugs, the middle portion of each second lug is provided with a second mounting groove 662, and the side portion of each second lug is provided with the fourth pin hole 663. Each second mounting groove 662 accommodates the second hinge head 6134, and the second pin 65 is passed through the fourth pin hole 663 and the second pin hole 6135; the mounting platform 68 is I-shaped, and the connector body 661 is transversely fixed to the upper surface of the mounting platform 68; the two leaf spring fixing members 67 are respectively Fixedly mounted on the inner top cover 14 and the inner bottom cover 15, each leaf spring fixing member 67 is a cross-like structure with a hollowed-out portion at the intersection to provide clearance for the spindle 41. Each leaf spring support member 67 is provided with multiple leaf spring mounting slots 671, two rack mounting holes 672, and two guide rail mounting holes 673. The ends of the leaf springs 62 are removably mounted in the leaf spring mounting slots 671. Multiple leaf spring mounting slots 671 are arranged in parallel to adjust the spacing between the two leaf springs 62. The ends of the rack 73 of the motion adjustment mechanism 7 are fixedly mounted in the rack mounting holes 672, and the ends of the guide rail 52 are fixedly mounted in the guide rail mounting holes 673.

[0011] Furthermore, the motion adjustment mechanism 7 includes a gear top cover 71, a gear base 72, two left and right racks 73, a one-way gear set 74, a normal gear set 75, a normal bearing 76, a gear shaft set 77 and a coupling 78. The gear base 72 is fixedly mounted on the mounting platform 68. The gear base 72 is adjacent to the coil spring connector 66. The gear top cover 71 and the gear base 72 are installed in coordination. The one-way gear set 74, the normal gear set 75, the normal bearing 76, the gear shaft set 77 and the coupling 78 are all arranged in the gear top cover 71. The left and right racks 73 are respectively vertically mounted on the lateral sides of the mounting platform 68. The one-way gear set 74 includes a first one-way gear 741 and a second one-way gear 742. The first one-way gear 741 is meshed with the rack 73 on the left, and the second one-way gear 742 is meshed with the rack 73 on the left. The gear 742 is engaged with the rack 73 on the right side. The ordinary gear group 75 includes a first ordinary gear 751, a second ordinary gear 752 and a third ordinary gear 753. The gear shaft group 77 includes a first gear shaft 771, a second gear shaft 772 and a third gear shaft 773. The first one-way gear 741 and the first ordinary gear 751 share the same first gear shaft 771. The second one-way gear 742 and the third ordinary gear 753 share the same third gear shaft 773. The second ordinary gear 752 is engaged with the first ordinary gear 751 and the third ordinary gear 753 at the same time and is located between the first ordinary gear 751 and the third ordinary gear 753. The second ordinary gear 752 is connected to the coupling 78 through the second gear shaft 772, and the coupling 78 is connected to the power generation mechanism 8.

[0012] Furthermore, the power generation mechanism 8 includes a generator 81 and a fixing ring 82 . The generator 8 is mounted on the upper surface of one longitudinal side of the mounting platform 68 via the fixing ring 82 . The generator 8 is connected to the coupling 78 .

[0013] Furthermore, the outer top cover 12 includes a first circular plate 121 and a first annular mounting boss 122 located on the outer circumference of the first circular plate 121. The outer wall of the first annular mounting boss 122 is tightly fitted with the inner wall of the upper end of the cylindrical float body 11. The inner top cover 14 includes a second circular plate 141 and a first mounting protrusion 142. The second circular plate 141 is screwed to the outer top cover 12. The first mounting protrusion 142 is symmetrically mounted in the middle position below the second circular plate 141. The outer bottom cover 13 includes an inverted conical surface 131, a second annular mounting boss 13 2. An annular bearing plate 133, a flange mounting plate 134, a flange seal 135 and a sealing gasket 136. The annular bearing plate 133 is provided on the top of the inverted conical surface 131. The second annular mounting boss 132 is provided on the annular bearing plate 133. The outer wall of the second annular mounting boss 132 is tightly fitted with the inner wall of the lower end of the cylindrical float body 11. The flange mounting plate 134 is annular and is provided at the bottom of the inverted conical surface 131. The annular shape is used to pass the main shaft 41. The bottom end cover 45 is provided on the flange mounting plate 134. The flange seal 135 is mounted in conjunction with the flange mounting plate 134, and the sealing gasket 136 is mounted between the flange mounting plate 134 and the flange seal 135. The flange seal 135 extends downwardly to form a first shaft section 1351. The outer wall of the first shaft section 1351 is used to mount the telescopic sealing sleeve 2. The inner wall of the first shaft section 1351 is used to pass the main shaft 41. The inner bottom cover 15 includes a third circular plate 151 and a second mounting protrusion 152. The center of the third circular plate 151 is provided with a center hole 1511. The second mounting protrusion 152 is provided with a center hole 1511. 52 is symmetrically arranged near the center hole 1511, the top end of the first linear bearing 42 passes through the center hole 1511 and is installed in the top end cover 44 in cooperation with one of the first washers 43, the bottom end of the first linear bearing 42 is installed in the bottom end cover 45 in cooperation with another of the first washers 43, and the side of the second mounting protrusion 152 close to the center of the circle is set to an arc shape with the same curvature as the top end cover 44, and the hollowed-out portion of the leaf spring fixing member 67 is tightly fitted with the second mounting protrusion 152 or the first mounting protrusion 142.

[0014] Furthermore, the telescopic sealing sleeve 2 is sleeved on the portion of the main shaft 41 extending out of the outer bottom cover 13 on the lower side, the lower end of the main shaft 41 is detachably mounted in the fixing member 3, the upper end of the telescopic sealing sleeve 2 is fixedly mounted on the first shaft segment 1351 of the flange seal 135, the upper part of the fixing member 3 is provided with a second shaft segment 31, the lower end of the telescopic sealing sleeve 2 is fixedly mounted on the second shaft segment 31, the lower part of the fixing member 3 is a spherical structure, the spherical structure is provided with an anchor hole 32, and the anchor hole 32 is used for a mooring fixture.

[0015] The beneficial effects of the present invention are:

[0016] 1. The present invention designs a coil spring mechanism with simultaneous tension, compression and anti-instability functions and cooperates with a leaf spring to form a self-adjusting bistable mechanism. After the self-adjusting bistable mechanism is applied to the wave energy converter, it can automatically adjust the potential barrier of the system. Compared with traditional bistable wave energy converters, the self-adjusting bistable wave energy converter is more easily adapted to the complex and changeable wave height changes in the ocean, and can also cross the potential barrier to perform inter-well movement with a larger motion amplitude under the excitation of small waves.

[0017] 2. A bistable mechanism that cooperates with the sleeve to achieve tension and compression functions is designed. Together with the leaf spring, it forms the main structure of the self-adjusting bistable mechanism. The leaf spring realizes the dynamic boundary constraint of the traditional bistable mechanism. As a result, after the addition of the self-adjusting bistable mechanism, the device can have a potential barrier that automatically adjusts with changes in wave excitation. Even under relatively small wave excitation forces, large-scale inter-well movement in the bistable system can be easily completed.

[0018] 3. Since the coil spring mechanism assists compression and stretching through the sleeve and assists in achieving anti-bending function, the self-regulating bistable wave energy converter can have stable working performance.

[0019] 4. A linear transmission auxiliary mechanism mainly composed of linear bearings and guide rails was designed, and attached to one side of the guide rail to assist the linear transmission of the main shaft, thereby eliminating the top auxiliary transmission of the main shaft and reducing the axial space occupancy; a sealing form using a telescopic sealing sleeve to seal the optical axis transmission was designed, which simplified the sealing steps of the transmission process.

[0020] 5. In the present invention, the main transmission mechanism, auxiliary transmission mechanism, self-adjusting bistable mechanism, motion adjustment mechanism and power generation mechanism can be highly integrated in the float at the same time, and the compact structure is convenient for production, installation, transportation and use.

[0021] 6. The sealing method of the present invention adopts the form of an external telescopic sealing sleeve for sealing, which simplifies the sealing form compared with the traditional mechanical sealing method that requires a large number of components to complete the sealing function. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a partial exploded view of a leaf spring boundary-constrained self-regulating bistable wave energy converter of the present invention.

[0023] Figure 2 It is an oblique view of the outer top cover of the float of the present invention.

[0024] Figure 3 It is a cross-sectional view of the outer bottom cover of the float of the present invention.

[0025] Figure 4It is an oblique view of the inner top cover of the float of the present invention.

[0026] Figure 5 It is a perspective view of the inner bottom cover of the float of the present invention.

[0027] Figure 6 It is a schematic diagram of the telescopic sealing sleeve and the fixing member of the present invention.

[0028] Figure 7 It is a cross-sectional view of the main transmission mechanism and the stabilizing mechanism of the present invention.

[0029] Figure 8 It is a partial cross-sectional view of the auxiliary transmission mechanism and the self-adjusting bistable mechanism of the present invention.

[0030] Figure 9 It is a partial exploded view of a portion of the auxiliary transmission mechanism of the present invention.

[0031] Figure 10 It is a partial exploded view of a portion of the self-regulating bistable mechanism of the present invention.

[0032] Figure 11 It is a partial exploded view of the motion adjustment mechanism and the power generation mechanism of the present invention.

[0033] Figure 12 This is a state diagram of the wave energy converter of the present invention at the lower limit point.

[0034] Figure 13 This is a state diagram of the wave energy converter of the present invention at the lower stable equilibrium point.

[0035] Figure 14 This is a state diagram of the wave energy converter of the present invention at an unstable equilibrium point.

[0036] Figure 15 This is a state diagram of the wave energy converter of the present invention at the upper stable equilibrium point.

[0037] Figure 16 This is a state diagram of the wave energy converter of the present invention at the upper limit point.

[0038] Description of reference numerals:

[0039] Float 1, telescopic sealing sleeve 2, fixing part 3, main transmission mechanism 4, auxiliary transmission mechanism 5, self-adjusting bistable mechanism 6, motion adjustment mechanism 7, power generation mechanism 8, stabilizing mechanism 9.

[0040] Cylindrical float body 11, outer top cover 12, first circular plate 121, first circular mounting boss 122, outer bottom cover 13, inverted cone 131, second circular mounting boss 132, circular bearing plate 133, flange mounting plate 134, flange seal 135, first shaft segment 1351, sealing gasket 136, inner top cover 14, second circular plate 141, first mounting protrusion 142, inner bottom cover 15, third circular plate 151, center hole 1511, second mounting protrusion 152.

[0041] The second shaft section 31 and the anchor chain hole 32 .

[0042] Main shaft 41 , first linear bearing 42 , first washer 43 , top end cover 44 , bottom end cover 45 .

[0043] The integrated slider 51 , the connecting block 511 , the first slider 512 , the second slider 513 , the guide rail 52 , the second linear bearing 53 , the bearing cover assembly 54 , the connecting arm 541 , and the two bearing covers 542 .

[0044] Coil spring assembly 61, first sleeve 611, guide cylindrical hole 6111, mounting cylinder 6112, first stabilizing ring 6113, first hinge head 6114, first pin hole 6115, coil spring 612, second sleeve 613, second stabilizing ring 6131, guide column 6132, mounting head 6133, second hinge head 6134, second pin hole 6135, leaf spring 62, first pin 63, leaf spring positioning connector 64, rectangular through hole 641, first mounting groove 642, third pin hole 643, positioning body 644, second pin 65, coil spring connector 66, connector body 661, second mounting groove 662, fourth pin hole 663, leaf spring support 67, mounting platform 68.

[0045] Gear top cover 71, gear base 72, left and right racks 73, one-way gear set 74, first one-way gear 741, second one-way gear 742, ordinary gear set 75, first ordinary gear 751, second ordinary gear 752, third ordinary gear 753, ordinary bearing 76, gear shaft set 77, first gear shaft 771, second gear shaft 772, third gear shaft 773, coupling 78.

[0046] Generator 81 and fixing ring 82.

[0047] Counterweight block 91 , counterweight block bearing member 92 , counterweight bearing platform 93 , and auxiliary support member 94 . DETAILED DESCRIPTION

[0048] A leaf spring boundary constraint self-adjusting bistable wave energy converter, comprising a float 1, a telescopic sealing sleeve 2, a fixing member 3, a main transmission mechanism 4, an auxiliary transmission mechanism 5, a self-adjusting bistable mechanism 6, a motion adjustment mechanism 7, a power generation mechanism 8 and a stabilizing mechanism 9. The auxiliary transmission mechanism 5, the self-adjusting bistable mechanism 6, the motion adjustment mechanism 7, the power generation mechanism 8 and the stabilizing mechanism 9 are all integrated and installed in the float 1. The float 1 is composed of a cylindrical float body 11, an outer top cover 12, an outer bottom cover 13, an inner top cover 14 and an inner bottom cover 15. The outer top cover 12 is mounted on the inner top cover 14, the inner top cover 14 is arranged on the top of the cylindrical float body 11, the inner bottom cover 15 is arranged at the bottom end of the cylindrical float body 11, the outer bottom cover 13 is mounted below the inner bottom cover 15, the telescopic sealing sleeve 2 is set between the outer bottom cover 13 and the fixing member 3, the main transmission mechanism 4 passes through the center of the inner bottom cover 15 and the outer bottom cover 13, the top end of which is fixedly connected to the auxiliary transmission mechanism 5, and the bottom end of which is fixedly connected to the fixing member 3 Disassemble the connection, the auxiliary transmission mechanism 5 carries the motion adjustment mechanism 6, the self-adjusting bistable mechanism 7 and the power generation mechanism 8, the stabilizing mechanism 9 is arranged between the outer bottom cover 13 and the inner bottom cover 15, the main transmission mechanism 4 is arranged in the middle position, the auxiliary transmission mechanism 5 is arranged around the main transmission mechanism 4, the self-adjusting bistable mechanism 6 is arranged on both sides of the main transmission mechanism 4, the motion adjustment mechanism 7 is arranged at the top of the main transmission mechanism 4, the main transmission mechanism 4 is used to convert wave energy into kinetic energy that can move relative to each other when the float 1 moves with the waves, the auxiliary transmission mechanism 5 is used to assist the transmission of the main transmission mechanism 4, the self-adjusting bistable mechanism 6 is used to improve the low-frequency motion response of the float 1, the motion adjustment mechanism 7 is used to convert the linear motion of the main transmission mechanism 4 relative to the float 1 into rotational motion, the power generation mechanism 8 is used to achieve power generation, and the stabilizing mechanism 9 is used to ensure that the leaf spring boundary constraint self-adjusting bistable wave energy converter has sufficient restoring torque to prevent tipping.

[0049] Furthermore, the main transmission mechanism 4 includes a main shaft 41, a first linear bearing 42, a first washer 43, a top end cover 44 and a bottom end cover 45; the main shaft 41 is vertically arranged at the center of the float 1, the first linear bearing 42 is vertically arranged on a section of the main shaft 41 located at the inner bottom cover 15, the first washer 43 is respectively installed on the upper and lower sides of the first linear bearing 42, the cross-section of the top end cover 44 is L-shaped, and the cross-section of the bottom end cover 45 is a concave shape with the bottom protruding, the two first washers 43 are respectively installed in the top end cover 44 and the bottom end cover 45, the bottom end cover 45 is installed on the inner surface of the bottom end of the outer bottom cover 13, and the top end cover 44 is inverted and installed on the upper surface of the inner bottom cover 15.

[0050] Furthermore, the stabilizing mechanism 9 includes a counterweight block 91, a counterweight block carrier 92, a counterweight bearing platform 93 and an auxiliary support member 94; the counterweight block 91 is in the shape of a truncated cone with a larger upper portion and a smaller lower portion, and a cylindrical hole is provided in the middle. The counterweight bearing platform 93 is horizontally installed on the inverted cone surface 131 of the outer bottom cover 13. A circular hole is provided in the middle of the counterweight bearing platform 93 for passing the first linear bearing 42. The counterweight block carrier 92 includes a hollow cylindrical section and a circular plate section. The hollow cylindrical section is sleeved on the outside of the first linear bearing 42. The circular plate section is arranged on the counterweight bearing platform 93. The counterweight block 91 is sleeved on the counterweight block carrier 92. The auxiliary support member 94 is installed on the bottom end cover 45 to auxiliary support the counterweight bearing platform 93.

[0051] Furthermore, the auxiliary transmission mechanism 5 includes an integrated slider 51, a guide rail 52, a second linear bearing 53 and a bearing cover assembly 54; the integrated slider 51 includes a connecting block 511, a first slider 512 and a second slider 513, the second slider 513 is a rectangular parallelepiped with a cylindrical through hole in the center, the top of the spindle 41 is fixedly arranged in the cylindrical through hole, the first slider 512 is provided with two, the two first sliders 512 are cylinders, each of the cylinders is installed with the second linear bearing 53, the two first sliders 512 are respectively arranged at two adjacent corners of the second slider 513, the two first sliders 512 are fixedly arranged through the The connecting block 511 is connected, and the connecting block 511 is fixed to the side wall of the second slider 513; the bearing cover assembly 54 includes a connecting arm 541 and two bearing covers 542, and the two bearing covers 542 are respectively arranged at the top ends of the two first sliders 512 to limit the second linear bearing 53, and the two bearing covers 542 are connected by the connecting arm 541, and the connecting arm 541 is matched with the position of the connecting block 511; the guide rail 52 is vertically arranged in each second linear bearing 53, and the bottom end of the guide rail 52 is fixedly set on the inner bottom cover 15, and the top end of the guide rail 52 is fixedly set on the inner top cover 14.

[0052] Furthermore, the self-adjusting bistable mechanism 6 includes two groups of coil spring assemblies 61, two leaf springs 62, two first pins 63, two leaf spring positioning connectors 64, two second pins 65, a coil spring connector 66, two leaf spring supports 67 and a mounting platform 68; the mounting platform 68 horizontally and longitudinally covers the top of the integrated slider 51, and the coil spring connector 66 horizontally and laterally covers the top of the mounting platform 68, both ends of the coil spring connector 66 are connected to one end of a group of coil spring assemblies 61 through a second pin 65, and the other end of each coil spring assembly 61 is connected to the leaf spring positioning connector 64 through the first pin 63, two leaf springs 62 are vertically arranged on both sides of the leaf spring support 67, the two leaf spring supports 67 are respectively fixed to the inner surfaces of the inner bottom cover 15 and the inner top cover 14, and the two leaf spring positioning connectors 64 are respectively fixed at the middle position of the two leaf springs 62.

[0053] Furthermore, each group of the coil spring assembly 61 includes a first sleeve 611, a coil spring 612 and a second sleeve 613, and the first sleeve 611, the coil spring 612 and the second sleeve 613 are connected in sequence; the first sleeve 611 includes a guide cylindrical hole 6111, a mounting cylinder 6112, a first stabilizing ring 6113, a first hinge joint 6114 and a first pin shaft hole 6115, the guide cylindrical hole 6111 is arranged inside the mounting cylinder 6112, one end of the mounting cylinder 6112 is arranged inside the first stabilizing ring 6113, the first hinge joint 6114 is arranged on the first stabilizing ring 6113, and the first hinge joint 6114 is arranged on the first stabilizing ring 6113. On the outer side of the fixed ring 6113, the first pin hole 6115 is arranged inside the first hinge joint 6114, and the first pin 63 is passed through the first pin hole 6115; the second sleeve 613 includes a second stabilizing ring 6131, a guide column 6132, a mounting head 6133, a second hinge joint 6134 and a second pin hole 6135, one end of the guide column 6132 is arranged inside the second stabilizing ring 6131, the mounting head 6133 is arranged on the side of the second stabilizing ring 6131, the second hinge joint 6134 is arranged at the end of the mounting head 6133, and the second pin hole 6135 is provided. 5 is arranged inside the second hinge joint 6134, the second pin 65 is inserted into the second pin hole 6135, the guide column 6132 is slidably matched with the guide cylindrical hole 6111, the coil spring 612 is sleeved on the mounting cylinder 6112 and guided by the first stabilizing ring 6113 and the second stabilizing ring 6131, and the two ends of the coil spring 612 are respectively fixed in the first stabilizing ring 6113 and the second stabilizing ring 6131 by screws, so that the coil spring 612 has the functions of resisting instability and having both compression and tension functions; the leaf spring positioning connector 64 includes A rectangular through-hole 641, a first mounting slot 642, a third pin hole 643, and a positioning body 644. The positioning body 644 is a rectangular block with the rectangular through-hole 641 defined thereon. A first lug is provided on the side of the positioning body 644. The first mounting slot 642 is defined in the middle of the first lug. The third pin hole 643 is defined on the side of the first lug. The first hinged head 6114 is installed in the first mounting slot 642, and the first pin 63 passes through the first pin hole 6115 and the third pin hole 643. The leaf spring 62 is vertically fixedly disposed in the rectangular through-hole 641.The coil spring connector 66 is flat and includes a connector body 661, a second mounting groove 662 and a fourth pin hole 663. The left and right ends of the connector body 661 are respectively provided with second lugs, the middle portion of each second lug is provided with a second mounting groove 662, and the side portion of each second lug is provided with the fourth pin hole 663. Each second mounting groove 662 accommodates the second hinge head 6134, and the second pin 65 is passed through the fourth pin hole 663 and the second pin hole 6135; the mounting platform 68 is I-shaped, and the connector body 661 is transversely fixed to the upper surface of the mounting platform 68; the two leaf spring fixing members 67 are respectively Fixedly mounted on the inner top cover 14 and the inner bottom cover 15, each leaf spring fixing member 67 is a cross-like structure with a hollowed-out portion at the intersection to provide clearance for the spindle 41. Each leaf spring support member 67 is provided with multiple leaf spring mounting slots 671, two rack mounting holes 672, and two guide rail mounting holes 673. The ends of the leaf springs 62 are removably mounted in the leaf spring mounting slots 671. Multiple leaf spring mounting slots 671 are arranged in parallel to adjust the spacing between the two leaf springs 62. The ends of the rack 73 of the motion adjustment mechanism 7 are fixedly mounted in the rack mounting holes 672, and the ends of the guide rail 52 are fixedly mounted in the guide rail mounting holes 673.

[0054] Furthermore, the motion adjustment mechanism 7 includes a gear top cover 71, a gear base 72, two left and right racks 73, a one-way gear set 74, a normal gear set 75, a normal bearing 76, a gear shaft set 77 and a coupling 78. The gear base 72 is fixedly mounted on the mounting platform 68. The gear base 72 is adjacent to the coil spring connector 66. The gear top cover 71 and the gear base 72 are installed in coordination. The one-way gear set 74, the normal gear set 75, the normal bearing 76, the gear shaft set 77 and the coupling 78 are all arranged in the gear top cover 71. The left and right racks 73 are respectively vertically mounted on the lateral sides of the mounting platform 68. The one-way gear set 74 includes a first one-way gear 741 and a second one-way gear 742. The first one-way gear 741 is meshed with the rack 73 on the left, and the second one-way gear 742 is meshed with the rack 73 on the left. The gear 742 is engaged with the rack 73 on the right side. The ordinary gear group 75 includes a first ordinary gear 751, a second ordinary gear 752 and a third ordinary gear 753. The gear shaft group 77 includes a first gear shaft 771, a second gear shaft 772 and a third gear shaft 773. The first one-way gear 741 and the first ordinary gear 751 share the same first gear shaft 771. The second one-way gear 742 and the third ordinary gear 753 share the same third gear shaft 773. The second ordinary gear 752 is engaged with the first ordinary gear 751 and the third ordinary gear 753 at the same time and is located between the first ordinary gear 751 and the third ordinary gear 753. The second ordinary gear 752 is connected to the coupling 78 through the second gear shaft 772, and the coupling 78 is connected to the power generation mechanism 8.

[0055] Furthermore, the power generation mechanism 8 includes a generator 81 and a fixing ring 82 . The generator 8 is mounted on the upper surface of one longitudinal side of the mounting platform 68 via the fixing ring 82 . The generator 8 is connected to the coupling 78 .

[0056] Furthermore, the outer top cover 12 includes a first circular plate 121 and a first annular mounting boss 122 located on the outer circumference of the first circular plate 121. The outer wall of the first annular mounting boss 122 is tightly fitted with the inner wall of the upper end of the cylindrical float body 11. The inner top cover 14 includes a second circular plate 141 and a first mounting protrusion 142. The second circular plate 141 is screwed to the outer top cover 12. The first mounting protrusion 142 is symmetrically mounted in the middle position below the second circular plate 141. The outer bottom cover 13 includes an inverted conical surface 131, a second annular mounting boss 13 2. An annular bearing plate 133, a flange mounting plate 134, a flange seal 135 and a sealing gasket 136. The annular bearing plate 133 is provided on the top of the inverted conical surface 131. The second annular mounting boss 132 is provided on the annular bearing plate 133. The outer wall of the second annular mounting boss 132 is tightly fitted with the inner wall of the lower end of the cylindrical float body 11. The flange mounting plate 134 is annular and is provided at the bottom of the inverted conical surface 131. The annular shape is used to pass the main shaft 41. The bottom end cover 45 is provided on the flange mounting plate 134. The flange seal 135 is mounted in conjunction with the flange mounting plate 134, and the sealing gasket 136 is mounted between the flange mounting plate 134 and the flange seal 135. The flange seal 135 extends downwardly to form a first shaft section 1351. The outer wall of the first shaft section 1351 is used to mount the telescopic sealing sleeve 2. The inner wall of the first shaft section 1351 is used to pass the main shaft 41. The inner bottom cover 15 includes a third circular plate 151 and a second mounting protrusion 152. The center of the third circular plate 151 is provided with a center hole 1511. The second mounting protrusion 152 is provided with a center hole 1511. 52 is symmetrically arranged near the center hole 1511, the top end of the first linear bearing 42 passes through the center hole 1511 and is installed in the top end cover 44 in cooperation with one of the first washers 43, the bottom end of the first linear bearing 42 is installed in the bottom end cover 45 in cooperation with another of the first washers 43, and the side of the second mounting protrusion 152 close to the center of the circle is set to an arc shape with the same curvature as the top end cover 44, and the hollowed-out portion of the leaf spring fixing member 67 is tightly fitted with the second mounting protrusion 152 or the first mounting protrusion 142.

[0057] Furthermore, the telescopic sealing sleeve 2 is sleeved on the portion of the main shaft 41 extending out of the outer bottom cover 13 on the lower side, the lower end of the main shaft 41 is detachably mounted in the fixing member 3, the upper end of the telescopic sealing sleeve 2 is fixedly mounted on the first shaft segment 1351 of the flange seal 135, the upper part of the fixing member 3 is provided with a second shaft segment 31, the lower end of the telescopic sealing sleeve 2 is fixedly mounted on the second shaft segment 31, the lower part of the fixing member 3 is a spherical structure, the spherical structure is provided with an anchor hole 32, and the anchor hole 32 is used for a mooring fixture.

[0058] The present invention works as follows:

[0059] The leaf spring boundary constraint self-regulating bistable wave energy converter of the present invention floats on the sea surface through the anchor chain through the anchor chain hole 32, and the float 1 oscillates under the excitation of the waves, and the float moves axially relative to the main shaft 41. Figure 14 As shown in FIG, the plane where the axes of the two second pins are located when the coil spring assembly 61 is in a horizontal position and the coil spring 612 is compressed and the leaf spring 62 is bent outward to the limit state is defined as the equilibrium plane. When the central axes of the two second pins are in the equilibrium plane, the position of the self-regulating bistable wave energy converter is the unstable equilibrium point in the bistable system. Figure 13 As shown, when the central axes of the two second pins 65 are below the equilibrium plane, the coil spring 612 is at its original length, and the leaf spring 62 is in an unbent state, the position of the self-regulating bistable wave energy converter is the lower stable equilibrium point in the bistable system. Figure 15 As shown, when the axes of the two second pins 65 are above the equilibrium plane, the coil spring 612 is at its original length, and the leaf spring 62 is in an unbent state, the position of the self-regulating bistable wave energy converter is the upper stable equilibrium point in the bistable system. Figure 12 As shown, when the central axis of the second pin 65 is lower than the maximum distance of the balance plane, the self-regulating bistable wave energy converter is at the lower limit point. Figure 16 As shown, when the central axis of the second pin 65 is higher than the maximum distance of the balance plane, the self-regulating bistable wave energy converter is at the upper limit point. Figures 13 to 14 arrive Figure 15 ,When the float 1 oscillates with the waves, the float 1 experiences a process from the lower stable equilibrium point to the equilibrium plane and then to the upper stable equilibrium point, as shown in Figures 15 to 16 , and then continue to move from the upper stable equilibrium point to the upper limit point, such as Figure 16 to Figure 12 , then from the upper limit point to the upper stable equilibrium point, then go through the process from the upper stable equilibrium point to the equilibrium plane and then to the lower stable equilibrium point, and then move from the lower stable equilibrium point to the lower limit point, and so on.

[0060] Specifically, if Figures 13 to 14, the float 1 moves downward relative to the main shaft 41, and the main shaft 41 moves upward relative to the float 1. The auxiliary transmission mechanism 5 assists the main shaft 41 to move axially upward. The integrated slider 51 moves upward on the guide rail 52 through the linear bearing 53. The fixing part 3 fixed at the lower end of the main shaft 41 and the flange seal 135 at the lower end of the float 1 are close to each other. The telescopic sealing sleeve 2 is compressed in the form of corrugations to prevent seawater from penetrating into the device. When the integrated slider 51 moves upward, due to the connection relationship between the mounting platform 68 and the coil spring connector 66, the second pin 65 drives the second sleeve 613 to rotate. While the second sleeve 613 rotates, it drives the guide column 6132 to slide in the guide cylindrical hole 6111 of the first sleeve 611. The first sleeve 611 approaches the second sleeve 613, and the coil spring 612 is compressed accordingly and relies on the first stabilizing ring 6113 and the second The second stabilizing ring 6131 prevents lateral bending instability. At the same time, since the first sleeve 611 squeezes the leaf spring positioning connector 64 through the first pin shaft 63, the leaf spring positioning connector 64 squeezes the leaf spring 62, and the leaf spring 62 bends to both sides to form a "()" shape, storing elastic potential energy when the coil spring 612 is compressed. The bending of the leaf spring 62 also assists in storing elastic potential energy, avoiding the coil spring 612 working alone as in a traditional bistable system, causing the system's potential barrier to be too large. The bending of the leaf spring 62 assists the coil spring 612 to form a self-adjusting bistable structure 6 with dynamic boundary constraints. It is applied to a wave energy converter so that it can adjust its own potential barrier with wave excitation. The leaf spring 62 can be easily inserted into the leaf spring mounting holes 671 at different positions of the leaf spring support 67 to adjust the distance between the two, thereby further adjusting the boundary constraints of the self-adjusting bistable structure 6. At the same time, the two racks 73 move downward with the float 1, driving the first one-way gear 741 to rotate counterclockwise and the second one-way gear 742 to rotate clockwise. When the first one-way gear 741 transmits torque to the first gear shaft 771, while the second one-way gear 742 idles and does not transmit torque to the coaxial third gear shaft 773, the first common gear 751 rotates counterclockwise, the second common gear 752 rotates clockwise, and the third common gear 753 rotates counterclockwise. Ultimately, the second common gear 752 drives the coaxial second gear shaft 772 to rotate clockwise, and drives the generator 8 to generate electricity through the coupling 78. Until the self-regulating bistable wave energy converter reaches the equilibrium plane, the leaf spring 62 is bent to the maximum extent to form a "()" shape, the elastic potential energy stored when the coil spring 612 is compressed is the maximum, and the elastic potential energy stored by the bending of the leaf spring 62 is also the maximum.

[0061] Continue, as Figures 14 to 15, the main shaft 41 continues to move upward relative to the float 1. When the integrated slider 51 crosses the balance plane and continues to move upward until the self-regulating bistable wave energy converter is at the upper stable balance point, at this time, the coil spring 612 changes from the compressed state to the original length state, and the leaf spring 62 changes from the bent state to the normal state. At this time, the coil spring 612 and the leaf spring 62 simultaneously release elastic potential energy and convert it into kinetic energy required by the device, which increases the motion response in the low-frequency region compared to the wave energy converter without the self-regulating bistable structure 6.

[0062] Continue, as Figures 15 to 16 The main shaft 41 continues to move upward relative to the float 1 until the self-regulating bistable wave energy converter is at the upper limit point. The height of the upper limit point and the lower limit point depends on the magnitude of the wave excitation force. The greater the wave excitation force, the farther the upper limit point is from the lower limit point, and the longer the coil spring 612 is stretched. The smaller the wave excitation force, the closer the upper limit point is to the lower limit point. When the self-regulating bistable wave energy converter is at the upper limit point, the coil spring 612 is stretched to the limit position. Note that this limit position is not the stretching limit of the spring itself, but the maximum extent to which the spring can be stretched under the current wave excitation force. At this time, the leaf spring 62 is concave to both sides to form a ")(" shape to the greatest extent. The excessive kinetic energy of the self-regulating bistable wave energy converter is stretched and stored as elastic potential energy by the coil spring 612, and the bending of the leaf spring 62 assists in storing the elastic potential energy, thereby preventing the self-regulating bistable wave energy converter from causing damage to its components due to collision due to excessive kinetic energy.

[0063] On the contrary, if Figure 16 to Figure 15 When the float 1 moves upward, the rack 73 drives the first one-way gear 741 to rotate clockwise and the second one-way gear 742 to rotate counterclockwise. The first one-way gear 741 rotates idly without transmitting torque to the first gear shaft 771, while the second one-way gear 742 transmits torque to the coaxial third gear shaft 773. Finally, the second common gear 752 also drives the coaxial second gear shaft 772 to rotate clockwise and drives the generator 8 to generate electricity through the coupling 78.

[0064] The above specific embodiments are used to illustrate the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the scope of protection of the present invention and the claims shall fall within the scope of protection of the present invention.

Claims

1. A leaf spring boundary-constrained self-regulating bistable wave energy converter, characterized in that: The invention comprises a float (1), a telescopic sealing sleeve (2), a fixing member (3), a main transmission mechanism (4), an auxiliary transmission mechanism (5), a self-adjusting bistable mechanism (6), a motion adjustment mechanism (7), a power generation mechanism (8) and a stabilizing mechanism (9), wherein the auxiliary transmission mechanism (5), the self-adjusting bistable mechanism (6), the motion adjustment mechanism (7), the power generation mechanism (8) and the stabilizing mechanism (9) are all integrated and installed in the float (1); the float (1) is composed of a cylindrical float body (11), an outer top cover (12), an outer bottom cover (13), an inner top cover (14) and an inner bottom cover (15) which are detachably connected; the outer top cover (12) is installed on the inner top cover (14). The inner top cover (14) is arranged at the top end of the cylindrical float body (11), the inner bottom cover (15) is arranged at the bottom end of the cylindrical float body (11), the outer bottom cover (13) is installed below the inner bottom cover (15), the telescopic sealing sleeve (2) is sleeved between the outer bottom cover (13) and the fixing member (3), the main transmission mechanism (4) passes through the center of the inner bottom cover (15) and the outer bottom cover (13), the top end of the main transmission mechanism (4) is fixedly connected to the auxiliary transmission mechanism (5), and the bottom end of the main transmission mechanism (4) is detachably connected to the fixing member (3), and the auxiliary transmission mechanism (5) carries the motion adjustment mechanism (7) and the self-adjusting bistable mechanism (7). The stabilizing mechanism (9) is arranged between the outer bottom cover (13) and the inner bottom cover (15), the main transmission mechanism (4) is arranged in the middle position, the auxiliary transmission mechanism (5) is arranged around the main transmission mechanism (4), the self-adjusting bistable mechanism (6) is arranged on both sides of the main transmission mechanism (4), the motion adjustment mechanism (7) is arranged at the top of the main transmission mechanism (4), the main transmission mechanism (4) is used to convert wave energy into kinetic energy capable of relative motion when the float (1) moves with waves, and the auxiliary transmission mechanism (5) is used to assist the transmission of the main transmission mechanism (4). The self-regulating bistable mechanism (6) is used to improve the low-frequency motion response of the float (1); the motion adjustment mechanism (7) is used to convert the linear motion of the main transmission mechanism (4) relative to the float (1) into rotational motion; the power generation mechanism (8) is used to achieve power generation; and the stabilizing mechanism (9) is used to ensure that the leaf spring boundary constraint self-regulating bistable wave energy converter has sufficient restoring torque to prevent tipping; the main transmission mechanism (4) includes a main shaft (41), and the main shaft (41) is vertically arranged at the center of the float (1); the auxiliary transmission mechanism (5) includes an integrated slider (51), a guide rail (52) and a second linear bearing (53);The integrated slider (51) comprises a connecting block (511), a first slider (512) and a second slider (513). The second slider (513) is a rectangular parallelepiped with a cylindrical through hole at its center. The top end of the main shaft (41) is fixedly arranged in the cylindrical through hole. There are two first sliders (512). Both of the two first sliders (512) are cylinders. The second linear bearing (53) is installed in each cylinder. The two first sliders (512) are respectively arranged at two adjacent corners of the second slider (513). The two first sliders (512) are connected to each other. The second linear bearing (53) is connected to the second slider (513) by the connecting block (511), and the connecting block (511) is fixed to the side wall of the second slider (513); each second linear bearing (53) is vertically provided with the guide rail (52), the bottom end of the guide rail (52) is fixedly provided on the inner bottom cover (15), and the top end of the guide rail (52) is fixedly provided on the inner top cover (14); the self-adjusting bistable mechanism (6) includes two groups of coil spring assemblies (61), two leaf springs (62), two first pins (63), two leaf spring positioning connectors (64), two second pins (65), a coil spring assembly ... second pin A coil spring connector (66), two leaf spring support members (67) and a mounting platform (68); the mounting platform (68) is horizontally and longitudinally covered on the top of the integrated slider (51), the coil spring connector (66) is horizontally and transversely covered on the mounting platform (68), both ends of the coil spring connector (66) are connected to one end of a group of coil spring assemblies (61) through a second pin (65), and the other end of each coil spring assembly (61) is connected to the leaf spring positioning connector (64) through the first pin (63), and the two leaf springs are connected to each other. (62) are vertically arranged on both sides of the leaf spring support member (67), the two leaf spring support members (67) are respectively fixed to the inner surface of the inner bottom cover (15) and the inner top cover (14), and the two leaf spring positioning connectors (64) are respectively fixed at the middle position of the two leaf springs (62); each leaf spring support member (67) is provided with a plurality of leaf spring installation slits (671), the two ends of the leaf spring (62) are detachably installed in the leaf spring installation slits (671), and the plurality of leaf spring installation slits (671) are arranged in parallel to adjust the distance between the two leaf springs (62).

2. A leaf spring boundary-constrained self-regulating bistable wave energy converter according to claim 1, characterized in that: The main transmission mechanism (4) further comprises a first linear bearing (42), a first washer (43), a top end cover (44) and a bottom end cover (45); the first linear bearing (42) is vertically arranged on a section of the main shaft (41) located in the inner bottom cover (15); the first washer (43) is respectively installed on the upper and lower sides of the first linear bearing (42); the cross section of the top end cover (44) is L-shaped; the cross section of the bottom end cover (45) is a concave shape with the bottom protruding; the two first washers (43) are respectively installed in the top end cover (44) and the bottom end cover (45); the bottom end cover (45) is installed on the inner surface of the bottom end of the outer bottom cover (13); and the top end cover (44) is invertedly installed on the upper surface of the inner bottom cover (15).

3. A leaf spring boundary-constrained self-regulating bistable wave energy converter according to claim 2, characterized in that: The stabilizing mechanism (9) comprises a counterweight (91), a counterweight bearing member (92), a counterweight bearing platform (93) and an auxiliary support member (94); the counterweight (91) is in the shape of a truncated cone with a larger upper portion and a smaller lower portion, and is provided with a cylindrical hole in the middle; the counterweight bearing platform (93) is horizontally mounted on the inverted conical surface (131) of the outer bottom cover (13); a circular hole is provided in the middle of the counterweight bearing platform (93) for passing the first linear bearing (42); the counterweight bearing member (92) comprises a hollow cylindrical section and a circular plate section; the hollow cylindrical section is sleeved on the outside of the first linear bearing (42); the circular plate section is arranged on the counterweight bearing platform (93); the counterweight (91) is sleeved on the counterweight bearing member (92); and the auxiliary support member (94) is mounted on the bottom end cover (45) for auxiliary support of the counterweight bearing platform (93).

4. A leaf spring boundary-constrained self-regulating bistable wave energy converter according to claim 3, characterized in that: The auxiliary transmission mechanism (5) further includes a bearing cover assembly (54); the bearing cover assembly (54) includes a connecting arm (541) and two bearing covers (542); the two bearing covers (542) are respectively arranged at the top ends of the two first sliders (512) for limiting the second linear bearing (53); the two bearing covers (542) are connected by the connecting arm (541), and the position of the connecting arm (541) is matched with the position of the connecting block (511).

5. A leaf spring boundary-constrained self-regulating bistable wave energy converter according to claim 4, characterized in that: Each group of the coil spring assembly (61) includes a first sleeve (611), a coil spring (612) and a second sleeve (613), wherein the first sleeve (611), the coil spring (612) and the second sleeve (613) are connected in sequence; the first sleeve (611) includes a guide cylindrical hole (6111), a mounting cylinder (6112), a first stabilizing ring (6113), a first hinge joint (6114) and a first pin shaft hole (6115), wherein the guide cylindrical hole (6111) is arranged inside the mounting cylinder (6112), one end of the mounting cylinder (6112) is arranged inside the first stabilizing ring (6113), and the first hinge joint (6114) is arranged inside the first stabilizing ring (6113). The outer side surface of the ring (6113), the first pin shaft hole (6115) is arranged inside the first hinge joint (6114), and the first pin shaft (63) is passed through the first pin shaft hole (6115); the second sleeve (613) includes a second stabilizing ring (6131), a guide column (6132), a mounting head (6133), a second hinge joint (6134) and a second pin shaft hole (6135), one end of the guide column (6132) is arranged inside the second stabilizing ring (6131), the mounting head (6133) is arranged on the side surface of the second stabilizing ring (6131), the second hinge joint (6134) is arranged at the end of the mounting head (6133), and the second pin shaft hole ( 6135) is arranged inside the second hinge joint (6134), the second pin shaft (65) is inserted into the second pin shaft hole (6135), the guide column (6132) is slidably matched with the guide cylindrical hole (6111), the coil spring (612) is sleeved on the mounting cylinder (6112) and guided by the first stabilizing ring (6113) and the second stabilizing ring (6131), and the two ends of the coil spring (612) are respectively fixed in the first stabilizing ring (6113) and the second stabilizing ring (6131) by screws, so that the coil spring (612) has the functions of anti-instability and compression and tension at the same time; the leaf spring positioning connector (64) includes A rectangular through hole (641), a first mounting groove (642), a third pin shaft hole (643) and a positioning body (644); the positioning body (644) is a rectangular block with the rectangular through hole (641) provided thereon; a first lug is provided on the side of the positioning body (644); the first mounting groove (642) is provided in the middle of the first lug; the third pin shaft hole (643) is provided on the side of the first lug; the first hinge joint (6114) is installed in the first mounting groove (642); the first pin shaft (63) passes through the first pin shaft hole (6115) and the third pin shaft hole (643); the leaf spring (62) is vertically fixed in the rectangular through hole (641);The coil spring connector (66) is in the shape of a flat plate and includes a connector body (661), a second mounting groove (662) and a fourth pin hole (663). The left and right ends of the connector body (661) are respectively provided with second lugs. The middle part of each second lug is provided with the second mounting groove (662). The side part of each second lug is provided with the fourth pin hole (663). Each second mounting groove (662) accommodates the second hinge joint (6134), and the second pin (65) is inserted into the fourth pin hole (663) and the second pin hole (6135). The mounting platform (68) is in the shape of an I-beam. The connector body (661) is transversely fixed to the upper surface of the mounting platform (68); the two leaf spring support members (67) are respectively fixedly mounted on the inner top cover (14) and the inner bottom cover (15); each leaf spring support member (67) is a cross-shaped structure, with a hollow portion provided at the intersection, and the hollow portion is used to avoid the main shaft (41); each leaf spring support member (67) is also provided with two rack mounting holes (672) and two guide rail mounting holes (673); the two ends of the rack (73) of the motion adjustment mechanism (7) are fixedly mounted in the rack mounting holes (672), and the two ends of the guide rail (52) are fixedly mounted in the guide rail mounting holes (673).

6. A leaf spring boundary-constrained self-regulating bistable wave energy converter according to claim 5, characterized in that: The motion adjustment mechanism (7) includes a gear top cover (71), a gear base (72), two left and right racks (73), a one-way gear set (74), a common gear set (75), a common bearing (76), a gear shaft set (77) and a coupling (78). The gear base (72) is fixedly mounted on the mounting platform (68). The gear base (72) is adjacent to the coil spring connector (66). The gear top cover (71) and the gear base (72) are mounted in a coordinated manner. The one-way gear set (74), the ordinary gear set (75), the ordinary bearing (76), the gear shaft set (77) and the coupling (78) are all arranged in the gear top cover (71). The left and right racks (73) are respectively vertically mounted on the lateral sides of the mounting platform (68). The one-way gear set (74) includes a first one-way gear (741) and a second one-way gear (742). The first one-way gear (741) is meshed with the left rack (73). The second one-way gear (742) is meshed with the left rack (73). The wheel (742) is meshed with the rack (73) on the right side. The ordinary gear set (75) includes a first ordinary gear (751), a second ordinary gear (752) and a third ordinary gear (753). The gear shaft set (77) includes a first gear shaft (771), a second gear shaft (772) and a third gear shaft (773). The first one-way gear (741) and the first ordinary gear (751) share the same first gear shaft (771). The second one-way gear (742) and the third ordinary gear (753) share the same third gear shaft (773). The second ordinary gear (752) is meshed with the first ordinary gear (751) and the third ordinary gear (753) at the same time and is located between the first ordinary gear (751) and the third ordinary gear (753). The second ordinary gear (752) is connected to the coupling (78) through the second gear shaft (772). The coupling (78) is connected to the power generation mechanism (8).

7. The leaf spring boundary-constrained self-regulating bistable wave energy converter according to claim 6, characterized in that: The power generation mechanism (8) includes a generator (81) and a fixing ring (82). The generator (81) is mounted on the upper surface of one longitudinal side of the mounting platform (68) via the fixing ring (82). The generator (81) is connected to the coupling (78).

8. The leaf spring boundary-constrained self-regulating bistable wave energy converter according to claim 5, characterized in that: The outer top cover (12) includes a first circular plate (121) and a first annular mounting boss (122) located on the outer periphery of the first circular plate (121), the outer wall of the first annular mounting boss (122) is tightly matched with the inner wall of the upper end of the cylindrical float body (11), the inner top cover (14) includes a second circular plate (141) and a first mounting protrusion (142), the second circular plate (141) is screwed to the outer top cover (12), and the first mounting protrusion (142) is symmetrically mounted in the middle position below the second circular plate (141); the outer bottom cover (13) includes an inverted cone (131), a second annular mounting boss (132), a circular A ring bearing plate (133), a flange mounting plate (134), a flange seal (135) and a sealing gasket (136); the ring bearing plate (133) is arranged on the top of the inverted conical surface (131); the second ring mounting boss (132) is arranged on the ring bearing plate (133); the outer wall of the second ring mounting boss (132) is tightly matched with the inner wall of the lower end of the cylindrical float body (11); the flange mounting plate (134) is annular and is arranged at the bottom of the inverted conical surface (131); the annular shape is used to pass the main shaft (41); the bottom end cover (45) is arranged on the flange mounting plate (134); the method The flange seal (135) is mounted in cooperation with the flange mounting plate (134), the sealing gasket (136) is mounted between the flange mounting plate (134) and the flange seal (135), the flange seal (135) extends downwardly out of a first shaft section (1351), the outer wall of the first shaft section (1351) is used to mount the telescopic sealing sleeve (2), the inner wall of the first shaft section (1351) is used to pass the main shaft (41), the inner bottom cover (15) includes a third circular plate (151) and a second mounting protrusion (152), the center of the third circular plate (151) is provided with a center hole (1511), the second mounting protrusion (152) are symmetrically arranged near the center hole (1511), the top end of the first linear bearing (42) passes through the center hole (1511) and is installed in the top end cover (44) in cooperation with one of the first washers (43), the bottom end of the first linear bearing (42) is installed in the bottom end cover (45) in cooperation with another of the first washers (43), the side of the second mounting protrusion (152) near the center of the circle is set to be an arc shape with the same curvature as the top end cover (44), and the hollowed-out part of the leaf spring support (67) is tightly fitted with the second mounting protrusion (152) or the first mounting protrusion (142).

9. The leaf spring boundary-constrained self-regulating bistable wave energy converter according to claim 8, characterized in that: The telescopic sealing sleeve (2) is sleeved on the portion of the main shaft (41) extending out of the outer bottom cover (13) at the lower side. The lower end of the main shaft (41) is detachably mounted in the fixing member (3). The upper end of the telescopic sealing sleeve (2) is fixedly mounted on the first shaft section (1351) of the flange sealing member (135). The upper portion of the fixing member (3) is provided with a second shaft section (31). The lower end of the telescopic sealing sleeve (2) is fixedly mounted on the second shaft section (31). The lower portion of the fixing member (3) is a spherical structure. The spherical structure is provided with an anchor hole (32). The anchor hole (32) is used for a mooring fixture.

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