A tension-compression combined self-regulating bistable wave energy converter

Abstract

A tension-compression combined self-regulating bistable wave energy converter comprises a float body (1), a guide rod (2), a fixing mechanism (3), a self-regulating bistable mechanism (4), a transmission mechanism (5), a power generation mechanism (6) and a counterweight mechanism (7); the self-regulating bistable mechanism (4) is a tension-compression combined type, comprising two bending-resistant compression spring mechanisms arranged on the left and right and two tension spring mechanisms arranged front and back, wherein the bending-resistant compression spring mechanism comprises a compression spring (43) and a guide shaft (42), and the tension spring mechanism comprises a tension spring (44) and a clamping member (455); the two bending-resistant compression spring mechanisms arranged on the left and right and the two tension spring mechanisms arranged front and back work in coordination to automatically adjust a potential barrier, and are more likely to achieve inter-well oscillation than a traditional bistable mechanism with a fixed potential barrier, thereby expanding the motion amplitude, improving energy capture efficiency and enhancing power generation capacity.

Description

Technical Field

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

[0002] As a high-quality new renewable energy source, ocean wave energy offers advantages such as safety, cleanliness, high energy density, and low transmission losses. However, conventional linear wave energy converters have low energy capture efficiency. Furthermore, wave energy converters that use hydraulics for energy transmission struggle to meet efficiency and reliability requirements. One approach to improving energy harvesting in conventional linear wave energy converters is to incorporate a bistable mechanism. However, due to the irregularity of waves, it is difficult for them to cross the "potential barrier" and move between wells when the wave excitation is low. Instead, they move within the well, resulting in low energy capture efficiency. Bistable mechanisms are mostly implemented using springs, and a single coil spring is prone to bending and becoming unstable when compressed. Self-regulating bistable mechanisms composed solely of compression springs have poor stability and are difficult to disassemble and assemble, while also having low space utilization. Summary of the Invention

[0003] The main purpose of the present invention is to overcome the shortcomings of the existing technology and provide a tension-compression combined self-regulating bistable wave energy converter, which can have a high energy capture efficiency even when the wave excitation is small. At the same time, the wave energy converter has the characteristics of good stability, high integration and easy disassembly and assembly.

[0004] The technical solution of the present invention is:

[0005] A tension-compression combined self-adjusting bistable wave energy converter includes a float body 1, a guide rod 2, a fixing mechanism 3, a self-adjusting bistable mechanism 4, a transmission mechanism 5, a power generation mechanism 6, and a counterweight mechanism 7. The float body 1 is composed of a cylindrical buoy 11 and an end cap 12 that are detachably connected. The end cap 12 has a through hole in the center that cooperates with the guide rod 2. The fixing mechanism 3 is fixedly installed inside the cylindrical buoy 11. The fixing mechanism 3 is used to fix the self-adjusting bistable mechanism 4, the transmission mechanism 5, and the power generation mechanism 6. The counterweight mechanism 7 is fixedly installed on the bottom plate of the cylindrical buoy 11. The end cap 12 is slidably arranged with the guide rod 2. The counterweight mechanism 7 includes a plurality of counterweight blocks. , evenly distributed on the bottom plate of the cylindrical float 11; the self-adjusting bistable mechanism 4 is a tension-compression combination, including two anti-bending compression spring mechanisms arranged on the left and right and two tension spring mechanisms arranged front and back, wherein the anti-bending compression spring mechanism includes a compression spring 43 and a guide shaft 42, and the tension spring mechanism includes a tension spring 44 and a clamping part 455. The two anti-bending compression spring mechanisms arranged on the left and right and the two tension spring mechanisms arranged front and back work together to automatically adjust the potential barrier and easily realize inter-well oscillation, thereby expanding the motion amplitude and improving the energy capture efficiency.

[0006] Furthermore, the fixing mechanism 3 includes an upper fixing portion 31, a lower fixing portion 32, a bottom fixing portion 33, an upper transverse axis 34, a lower transverse axis 35, a lateral longitudinal axis 36, an intermediate longitudinal axis 37 and an intermediate connecting member 38. The upper transverse axis 34, the lower transverse axis 35, the lateral longitudinal axis 36 and the intermediate longitudinal axis 37 are all composed of two symmetrical optical axes. The lateral longitudinal axis 36 is respectively provided on the left and right sides of the cylindrical float 11. The lateral longitudinal axis 36 on the left and the lateral longitudinal axis 36 on the right are connected to the The middle longitudinal axes 37 are arranged vertically and parallel to each other, the upper transverse axis 34 and the lower transverse axis 35 are arranged horizontally and parallel to each other, the upper transverse axis 34 is arranged horizontally at the upper end of the cylindrical pontoon 11, the lower transverse axis 35 is arranged horizontally in the middle of the cylindrical pontoon 11, the middle longitudinal axis 37 is arranged vertically in the center of the cylindrical pontoon 11, and the middle longitudinal axis 37 is located on the plane of the symmetry axis of the side longitudinal axes 36 on the left and right sides, wherein the upper transverse axis 34 is arranged horizontally at the upper end of the cylindrical pontoon 11, and the lower transverse axis 35 is arranged horizontally in the middle of the cylindrical pontoon 11. The ends are fixedly connected to the upper ends of the side longitudinal axes 36 on the left and right sides through the upper fixing parts 31, and the two ends of the lower transverse axis 35 are fixedly connected to the lower ends of the side longitudinal axes 36 on the left and right sides through the lower fixing parts 32, and the top of the intermediate longitudinal axis 37 is fixedly connected to the middle part of the upper transverse axis 34 through the intermediate connecting part 38; the upper fixing part 31 is fixedly set on both sides of the top of the cylindrical float 11, and the lower fixing part 32 is fixedly set on both sides of the middle part of the cylindrical float 11, and the bottom end of the intermediate longitudinal axis 37 is fixed to the center of the bottom plate of the cylindrical float 11 through the bottom fixing part 33, and the intermediate longitudinal axis 37 passes over the lower transverse axis 35 and does not contact the lower transverse axis 35, the spacing between the two optical axes of the lower transverse axis 35 is equal to the spacing between the two optical axes of the upper transverse axis 34, and the spacing between the two optical axes of the intermediate longitudinal axis 37 is greater than the spacing between the two optical axes of the lower transverse axis 35.

[0007] Furthermore, each of the upper fixing parts 31 includes a side wall fixing part 311, an axis end fixing part 312 and a packaging fixing part 313. The axis end fixing part 312 is a convex block structure, and the side of the convex block structure is used to fix the axis end of the upper horizontal axis 34. The protruding part of the axis end fixing part 312 is provided with a threaded hole for connecting with the side wall fixing part 311. The packaging fixing part 313 is a rectangular block structure. The side wall fixing part 311 is fixedly installed on the inner wall of the cylindrical float 11. The side wall fixing part 311 is long and one side is set to an arc shape, which matches the curvature of the cylindrical float 11. One side of the side wall fixing part 311 is provided with a primary rectangular groove 3111 of the same thickness as the packaging fixing part 313. The rectangular groove 3111 is a horizontally arranged long strip, and a secondary rectangular groove 3112 is opened downward in the middle of the primary rectangular groove 3111 to cooperate with the protrusion of the shaft end fixing piece 312, and tertiary rectangular grooves 3113 are opened at both ends of the primary rectangular groove 3111. The groove width of the two tertiary rectangular grooves 3113 is the same size as the optical axis diameter of the upper horizontal axis 34, and the two tertiary rectangular grooves 3113 are used to accommodate the shaft ends of the upper horizontal axis 34, thereby forming two bosses of the same size between the secondary rectangular groove 3112 and the two tertiary rectangular grooves 3113, and the two bosses are respectively installed and fixed with the two packaging fixing pieces 313, and the center of the boss is provided with a boss of the same size as the optical axis diameter of the side longitudinal axis 36. The through hole is used to insert and install the upper end of the side longitudinal axis 36, and threaded blind holes are respectively provided on both sides of the through hole of the boss for fixing with the packaging fixing piece 313; each of the lower fixing parts 32 includes a lower wall fixing piece 321 and an axis end fixing piece 312, and the lower wall fixing piece 321 is the same size as the side wall fixing piece 311, and the lower wall fixing piece 321 is long and one side is set to be arc-shaped, which matches the curvature of the cylindrical float 11, and a first rectangular groove 3211 is provided at the center of one side of the lower wall fixing piece 321, which cooperates with the protrusion of the axis end fixing piece 312, and a second rectangular groove 3212 is provided at each end of the same side of the lower wall fixing piece 321, and the two second rectangular grooves 3212 are grooves The width is the same size as the optical axis diameter of the lower horizontal axis 35, and the two second rectangular grooves 3212 are used to accommodate the axial end of the lower horizontal axis 35. Circular blind holes are respectively provided on both sides of the upper end surface of the lower wall fixing member 321 to accommodate the lower end of the side longitudinal axis 36; the bottom fixing portion 33 includes a bottom supporting member 331 and a bottom positioning frame 332, the bottom supporting member 331 is a rectangular block, and the bottom positioning frame 332 is a rectangular frame fixed to the center of the bottom plate of the cylindrical float 11, and the bottom positioning frame 332 is provided with a positioning groove that can accommodate the bottom supporting member 331, and circular through holes of the same size as the optical axis diameter of the intermediate longitudinal axis 37 are respectively provided at both ends of the bottom supporting member 331 to accommodate the lower end of the intermediate longitudinal axis 37;The intermediate connecting member 38 is a rectangular parallelepiped structure. It has a horizontal through-hole for the upper transverse axis 34 and a vertical through-hole for the intermediate longitudinal axis 37. The horizontal through-hole and the vertical through-hole are spatially dysplastic. The upper transverse axis 34 and the intermediate longitudinal axis 37 are fixed to the intermediate connecting member 38 using fastening screws.

[0008] Furthermore, the self-adjusting bistable mechanism 4 includes a connecting platform 41 and a transverse slider 45; it also includes two anti-bending compression spring mechanisms arranged on the left and right and two tension spring mechanisms arranged front and back, wherein the anti-bending compression spring mechanism includes a compression spring 43 and a guide shaft 42, and the tension spring mechanism includes a tension spring 44 and a clamping member 455; the connecting platform 41 includes a platform main board 411, a pivot connection 412, a rack fixing member 413 and a guide connecting plate 414, and a top threaded hole is provided in the center of the upper surface of the guide connecting plate 414, and the bottom end of the guide rod 2 is fixedly installed in the top threaded hole, and the guide connecting plate 414 is fixed to the upper surface of the platform main board 411, and mounting grooves are respectively provided in the centers of both sides of the platform main board 411, and one end of the pivot connection 412 is pinned. The shaft is rotatably installed in the installation groove, and a first avoidance groove is provided on the guide connecting plate 414 at a position corresponding to the installation groove; the pivot connecting member 412 includes a pivot sleeve 4121, a connecting cylinder 4122 and a fixed sleeve 4123, and the pivot sleeve 4121 is rotatably installed in the installation groove through the pin shaft, and one side of the pivot sleeve 4121 is connected to one end of the fixed sleeve 4123 through the connecting cylinder 4122; the rack fixing member 413 is installed on the lower surface of the platform main board 411, and a second avoidance groove is provided on the rack fixing member 413 at a position corresponding to the installation groove, and the pivot sleeve 4121 rotates in the rotation space formed by the first avoidance groove, the installation groove and the second avoidance groove through the pin shaft.

[0009] The transverse slider 45 is provided with two identical groups, which are symmetrically distributed on the left and right sides of the connecting platform 41 and are mounted on the upper transverse axis 34; the transverse slider 45 includes a slider body 451, a first linear bearing 452, an articulated sleeve 453 and a second linear bearing 454, the slider body 451 is in the shape of a long strip, and the cross section of the slider body 451 is a convex shape placed laterally, the slider body 451 is divided into a raised portion and a main body, a straight groove 4511 is provided in the center of the raised portion of the slider body 451, and a semicircular groove 4512 is provided in the center of one side of the main body of the slider body 451, the semicircular groove 4512 is used to accommodate the articulated sleeve 453, the straight groove 4511 and the semicircular groove 4512 are used to accommodate the articulated sleeve 453, The positions correspond and intersect, and the intersecting part constitutes the swing space of the guide shaft 42. Square through grooves 4513 are respectively provided on the protruding portion and on both sides of the straight groove 4511. The square through grooves 4513 are used to accommodate the clamping member 455. The clamping member 455 includes a first clamping member 4551, a second clamping member 4552, a third clamping member 4553 and a horizontal axis 4554. The first clamping member 4551 and the second clamping member 4552 are both door frame-shaped. The first clamping member 4551 and the second clamping member 4552 are respectively tightly attached to the front and rear inner walls of the square through groove 4513. The horizontal axis 4554 connects the first clamping member 4551 and the second clamping member 4552. The end of the tension spring 44 is installed on the horizontal axis 4554. The third clamping member 4553 is L-shaped, and the third clamping member 4553 is used to simultaneously clamp the first clamping member 4551 and the second clamping member 4552 into the square through groove 4513; the articulated sleeve 453 includes an arc portion 4531 and a cylindrical portion 4532, and the arc portion 4531 includes a plane end and an arc end, one end of the cylindrical portion 4532 is connected to the plane end of the arc portion 4531, and the arc end of the arc portion 4531 is placed in the semicircular groove 4512, and the second linear bearing 454 is inserted into the interior of the cylindrical portion 4532 from the other end of the cylindrical portion 4532, and a through hole 4533 for the guide shaft 42 to pass through is opened in the center of the arc portion 4531. One end of the guide shaft 42 is fixed in the fixed sleeve 4123, and the other end of the guide shaft 42 passes through the compression spring 43, the second linear bearing 454 and the through hole 4533 of the hinge sleeve 453 in sequence and is suspended. One end of the compression spring 43 is connected to the pivot connection 412, and the other end of the compression spring 43 is connected to the second linear bearing 454. A straight circular groove 4514 is also provided on the raised portion and next to the square through groove 4513. The first linear bearing 452 is installed in the straight circular groove 4514 of the slider body 451. The upper horizontal axis 34 passes through the first linear bearing 452, and the slider body 451 slides on the upper horizontal axis 34 through the first linear bearing 452.The first linear bearing 452 is provided to facilitate the horizontal sliding of the slider body 451 , and the second linear bearing 454 is provided to facilitate the sliding of the cylindrical portion 4532 along the guide shaft 42 to avoid dry friction sliding.

[0010] Furthermore, the transmission mechanism 5 includes a rack 51, an input gear 52, an intermediate gear 53, an output gear 54, an input transmission shaft 55, an output transmission shaft 56, a coupling 57, a third bearing 58, a fixed frame 59, a bearing seat 510, a frame fixing member 511, a first longitudinal slider 512, a second longitudinal slider 513 and a fourth linear bearing 514. There are two bearing seats 510, and the two bearing seats 510 are symmetrically installed on the fixed frame 59. The intermediate longitudinal axis 37 passes through the bearing seat 510 and the fixed frame 59 to limit lateral displacement. There are four frame fixing members 511, and the four frame fixing members 511 are respectively fixed to the four corners of the fixed frame 59. The lower horizontal axis 35 passes through the frame fixing member 511. Each bearing seat 510 is provided with two circular holes, and the third bearing 58 is arranged in the circular hole. The input transmission shaft 55 and the output transmission shaft 56 are installed parallel to the third axis. In the bearing 58, there are two couplings 57, which are respectively connected to the two ends of the output transmission shaft 56. The input gear 52 and the intermediate gear 53 are coaxially mounted on the input transmission shaft 55, and the output gear 54 is mounted on the output transmission shaft 56. The intermediate gear 53 is meshed with the output gear 54, and the input gear 52 is meshed with the rack 51. The first longitudinal slider 512 is arranged above the bearing seat 510, and the rack 51 passes through the first longitudinal slider 512 and is fixedly connected to the first longitudinal slider 512. The upper end of the rack 51 is fixedly mounted on the rack fixing member 413, and the lower end of the rack 51 is fixedly mounted in the second longitudinal slider 513. The second longitudinal slider 513 is arranged below the bearing seat 510. The first longitudinal slider 512 and the second longitudinal slider 513 are both slidably connected to the intermediate longitudinal shaft 37 through a fourth linear bearing 514.

[0011] Furthermore, the power generation mechanism 6 is provided with two groups, and the two groups of the power generation mechanism 6 are respectively connected to the two bearing seats 510. The power generation mechanism 6 includes a generator 61 and a power generation fixed frame 62. The power generation fixed frame 62 is fixedly installed on the bearing seat 510. The generator 61 is connected to the output drive shaft 56 through the coupling 57, and the generator 61 is fixed on the power generation fixed frame 62.

[0012] The beneficial effects of the present invention are:

[0013] 1. This invention designs a self-adjusting bistable mechanism composed of a bending-resistant compression spring mechanism and a tension spring mechanism. The bending-resistant compression spring mechanism, combined with the tension springs on both sides, automatically adjusts the potential barrier. Compared to traditional bistable mechanisms with fixed potential barriers, this mechanism more easily achieves inter-well oscillation, thereby expanding the motion amplitude and achieving higher energy capture efficiency. Furthermore, because the compression spring is sleeved on the guide shaft to provide bending resistance, instability caused by compression bending is avoided. Meanwhile, the tension spring mechanism remains stable during operation, resulting in a highly stable self-adjusting bistable mechanism.

[0014] 2. The self-regulating bistable mechanism, transmission mechanism, and power generation mechanism of the present invention are simultaneously integrated within a cylindrical tube via a fixing mechanism. This compact device offers a high level of integration and is easy to transport and use. The dual-rod design employed in both the horizontal and vertical directions of the fixing mechanism enhances the overall stability of the device.

[0015] 3. The arrangement of the transverse slider of the self-adjusting bistable mechanism in the present invention allows the self-adjusting bistable mechanism to be disassembled and adjusted by removing the clamping piece and moving the transverse slider, which is convenient for assembly and disassembly.

[0016] 4. The power generation transmission mechanism composed of multi-stage gear transmission in the present invention increases energy transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall cross-sectional view of a tension-compression combined self-regulating bistable wave energy converter of the present invention.

[0018] Figure 2 It is a schematic diagram of the fixing mechanism of the present invention.

[0019] Figure 3 It is a schematic diagram of a part of the fixing mechanism of the present invention.

[0020] Figure 4 It is an exploded view of a portion of the fixing mechanism of the present invention.

[0021] Figure 5 It is a schematic diagram of the intermediate connecting piece of the present invention.

[0022] Figure 6 It is an overall schematic diagram of the self-regulating bistable mechanism of the present invention.

[0023] Figure 7 It is a partial schematic diagram of the self-regulating bistable mechanism of the present invention.

[0024] Figure 8 Schematic diagram of the connection platform of the present invention.

[0025] Figure 9 is a schematic diagram of a pivot connection member of the present invention.

[0026] Figure 10 It is a front view of the slider body of the present invention.

[0027] Figure 11 It is an oblique view of the slider body of the present invention.

[0028] Figure 12 It is a partial front view of the slider body of the present invention.

[0029] Figure 13 It is a partial reverse view of the slider body of the present invention.

[0030] Figure 14 It is a state diagram of the self-regulating bistable mechanism of the wave energy converter of the present invention when it is above the oscillation equilibrium position.

[0031] Figure 15 It is a state diagram of the self-regulating bistable mechanism of the wave energy converter of the present invention when it is in an oscillating equilibrium position.

[0032] Figure 16 It is a state diagram of the self-regulating bistable mechanism of the wave energy converter of the present invention when it is below the oscillation equilibrium position.

[0033] Figure 17 It is a schematic diagram of the transmission mechanism of the present invention.

[0034] Figure 18 It is a schematic diagram of the power generation mechanism of the present invention.

[0035] Reference numerals: float body 1, guide rod 2, fixing mechanism 3, self-adjusting bistable mechanism 4, transmission mechanism 5, power generation mechanism 6, counterweight mechanism 7;

[0036] Cylindrical buoy 11, end cover 12;

[0037] Upper fixing portion 31, side wall fixing piece 311, primary rectangular groove 3111, secondary rectangular groove 3112, tertiary rectangular groove 3113, shaft end fixing piece 312, package fixing piece 313, lower fixing portion 32, lower wall fixing piece 321, first rectangular groove 3211, second rectangular groove 3212, bottom fixing portion 33, bottom supporting piece 331, bottom positioning frame 332, upper horizontal axis 34, lower horizontal axis 35, side longitudinal axis 36, middle longitudinal axis 37, middle connecting piece 38;

[0038] Connecting platform 41, platform main board 411, pivot connection 412, pivot sleeve 4121, connecting cylinder 4122, fixing sleeve 4123, rack fixing member 413 and guide connecting plate 414, guide shaft 42, compression spring 43, tension spring 44, transverse slider 45, slider body 451, straight groove 4511, semicircular groove 4512, square through groove 4513, straight circular groove 4514, first linear bearing 452, articulated sleeve 453, arc portion 4531, cylindrical portion 4532, through hole 4533, second linear bearing 454, clamping member 455, first clamping member 4551, second clamping member 4552, third clamping member 4553, transverse axis 4554;

[0039] Rack 51, input gear 52, intermediate gear 53, output gear 54, input transmission shaft 55, output transmission shaft 56, coupling 57, third bearing 58, fixed frame 59, bearing seat 510, frame fixing member 511, first longitudinal slider 512, second longitudinal slider 513, fourth linear bearing 514;

[0040] Generator 61 and generator fixing frame 62. DETAILED DESCRIPTION

[0041] The present invention will be further described below with reference to the accompanying drawings.

[0042] like Figure 1 As shown, a tension-compression combined self-regulating bistable wave energy converter includes a float body 1, a guide rod 2, a fixing mechanism 3, a self-regulating bistable mechanism 4, a transmission mechanism 5, a power generation mechanism 6 and a counterweight mechanism 7. The float body 1 is composed of a cylindrical buoy 11 and an end cover 12 that are detachably connected. The center of the end cover 12 is provided with a through hole to cooperate with the guide rod 2. The fixing mechanism 3 is fixedly installed inside the cylindrical buoy 11. The fixing mechanism 3 is used to fix the self-regulating bistable mechanism 4, the transmission mechanism 5 and the power generation mechanism 6. The counterweight mechanism 7 is fixedly installed on the bottom plate of the cylindrical buoy 11. The end cover 12 is slidably arranged with the guide rod 2. The counterweight mechanism 7 includes a plurality of counterweight blocks that are evenly distributed on the bottom plate. On the bottom plate of the cylindrical float 11; the self-adjusting bistable mechanism 4 is a tension-compression combination, including two anti-bending compression spring mechanisms arranged on the left and right and two tension spring mechanisms arranged front and back, wherein the anti-bending compression spring mechanism includes a compression spring 43 and a guide shaft 42, and the tension spring mechanism includes a tension spring 44 and a clamping part 455. The two anti-bending compression spring mechanisms arranged on the left and right and the two tension spring mechanisms arranged front and back work together, which is easier to achieve inter-well oscillation than the traditional bistable mechanism with fixed potential barriers, thereby expanding the motion amplitude, improving energy capture efficiency, and enhancing power generation capacity.

[0043] like Figure 2As shown, the fixing mechanism 3 includes an upper fixing portion 31, a lower fixing portion 32, a bottom fixing portion 33, an upper transverse axis 34, a lower transverse axis 35, a lateral longitudinal axis 36, an intermediate longitudinal axis 37 and an intermediate connecting member 38. The upper transverse axis 34, the lower transverse axis 35, the lateral longitudinal axis 36 and the intermediate longitudinal axis 37 are all composed of two symmetrical optical axes. The lateral longitudinal axis 36 is respectively provided on the left and right sides of the cylindrical float 11. The lateral longitudinal axis 36 on the left and the lateral longitudinal axis 36 on the right are connected to the intermediate longitudinal axis 37. The longitudinal axes 37 are arranged vertically and parallel to each other, the upper transverse axis 34 and the lower transverse axis 35 are arranged horizontally and parallel to each other, the upper transverse axis 34 is arranged horizontally at the upper end of the cylindrical pontoon 11, the lower transverse axis 35 is arranged horizontally in the middle of the cylindrical pontoon 11, the intermediate longitudinal axis 37 is arranged vertically in the center of the cylindrical pontoon 11, and the intermediate longitudinal axis 37 is located on the plane of the symmetry axis of the side longitudinal axes 36 on the left and right sides, wherein the ends of the upper transverse axis 34 are arranged horizontally at the upper end of the cylindrical pontoon 11, and the lower transverse axis 35 is arranged horizontally at the middle of the cylindrical pontoon 11. The upper ends of the side longitudinal axes 36 on the left and right sides are fixedly connected through the upper fixing parts 31, and the two ends of the lower transverse axis 35 are fixedly connected to the lower ends of the side longitudinal axes 36 on the left and right sides through the lower fixing parts 32. The top end of the intermediate longitudinal axis 37 is fixedly connected to the middle part of the upper transverse axis 34 through the intermediate connecting piece 38; the upper fixing part 31 is fixedly arranged on both sides of the top of the cylindrical float 11, and the lower fixing part 32 is fixedly arranged on both sides of the middle part of the cylindrical float 11. The bottom end of the intermediate longitudinal axis 37 is fixed to the center of the bottom plate of the cylindrical float 11 through the bottom fixing part 33. The intermediate longitudinal axis 37 passes over the lower transverse axis 35 and does not contact the lower transverse axis 35. The spacing between the two optical axes of the lower transverse axis 35 is equal to the spacing between the two optical axes of the upper transverse axis 34, and the spacing between the two optical axes of the intermediate longitudinal axis 37 is greater than the spacing between the two optical axes of the lower transverse axis 35.

[0044] like Figure 3 、 Figure 4 and Figure 5As shown, each of the upper fixing parts 31 includes a side wall fixing part 311, an axis end fixing part 312 and a packaging fixing part 313. The axis end fixing part 312 is a convex block structure. The side of the convex block structure is used to fix the axis end of the upper horizontal axis 34. The protruding part of the axis end fixing part 312 is provided with a threaded hole for connecting with the side wall fixing part 311. The packaging fixing part 313 is a rectangular block structure. The side wall fixing part 311 is fixedly installed on the inner wall of the cylindrical float 11. The side wall fixing part 311 is long and one side is set to an arc shape, which matches the curvature of the cylindrical float 11. One side of the side wall fixing part 311 is provided with a primary rectangular groove 3111 of the same thickness as the packaging fixing part 313. The groove 3111 is a horizontally arranged long strip, and a secondary rectangular groove 3112 is opened downward in the middle of the primary rectangular groove 3111 to cooperate with the protrusion of the shaft end fixing piece 312, and tertiary rectangular grooves 3113 are opened at both ends of the primary rectangular groove 3111. The groove width of the two tertiary rectangular grooves 3113 is the same size as the optical axis diameter of the upper horizontal axis 34, and the two tertiary rectangular grooves 3113 are used to accommodate the shaft ends of the upper horizontal axis 34, thereby forming two bosses of the same size between the secondary rectangular groove 3112 and the two tertiary rectangular grooves 3113, and the two bosses are respectively installed and fixed with the two packaging fixing pieces 313, and a boss with the same size as the optical axis diameter of the side longitudinal axis 36 is provided in the center of the boss. The through hole is used to insert and install the upper end of the side longitudinal axis 36, and threaded blind holes are respectively provided on both sides of the through hole of the boss for fixing with the packaging fixing piece 313; each of the lower fixing parts 32 includes a lower wall fixing piece 321 and an axis end fixing piece 312, and the lower wall fixing piece 321 is the same size as the side wall fixing piece 311, and the lower wall fixing piece 321 is long and one side is set to be arc-shaped, which matches the curvature of the cylindrical float 11, and a first rectangular groove 3211 is provided at the center of one side of the lower wall fixing piece 321, which cooperates with the protrusion of the axis end fixing piece 312, and a second rectangular groove 3212 is provided at each end of the same side of the lower wall fixing piece 321, and the two second rectangular grooves 3212 are respectively provided with grooves The width is the same size as the optical axis diameter of the lower horizontal axis 35, and the two second rectangular grooves 3212 are used to accommodate the axial end of the lower horizontal axis 35. Circular blind holes are respectively provided on both sides of the upper end surface of the lower wall fixing member 321 to accommodate the lower end of the side longitudinal axis 36; the bottom fixing portion 33 includes a bottom supporting member 331 and a bottom positioning frame 332, the bottom supporting member 331 is a rectangular block, and the bottom positioning frame 332 is a rectangular frame fixed to the center of the bottom plate of the cylindrical float 11, and the bottom positioning frame 332 is provided with a positioning groove that can accommodate the bottom supporting member 331, and circular through holes of the same size as the optical axis diameter of the intermediate longitudinal axis 37 are respectively provided at both ends of the bottom supporting member 331 to accommodate the lower end of the intermediate longitudinal axis 37;The intermediate connecting member 38 is a rectangular parallelepiped structure. It has a horizontal through-hole for the upper transverse axis 34 and a vertical through-hole for the intermediate longitudinal axis 37. The horizontal through-hole and the vertical through-hole are spatially dysplastic. The upper transverse axis 34 and the intermediate longitudinal axis 37 are fixed to the intermediate connecting member 38 using fastening screws.

[0045] like Figure 6-16 As shown, the self-adjusting bistable mechanism 4 includes a connecting platform 41 and a transverse slider 45; it also includes two anti-bending compression spring mechanisms arranged on the left and right and two tension spring mechanisms arranged in the front and back, wherein the anti-bending compression spring mechanism includes a compression spring 43 and a guide shaft 42, and the tension spring mechanism includes a tension spring 44 and a clamping member 455; the connecting platform 41 includes a platform main board 411, a pivot connection 412, a rack fixing member 413 and a guide connecting plate 414, a top threaded hole is provided in the center of the upper surface of the guide connecting plate 414, the bottom end of the guide rod 2 is fixedly installed in the top threaded hole, the guide connecting plate 414 is fixed to the upper surface of the platform main board 411, and mounting grooves are respectively provided in the centers of both sides of the platform main board 411, and one end of the pivot connection 412 is connected by a pin. It is rotatably installed in the installation groove, and a first avoidance groove is provided on the guide connecting plate 414 at a position corresponding to the installation groove; the pivot connecting member 412 includes a pivot sleeve 4121, a connecting cylinder 4122 and a fixed sleeve 4123, and the pivot sleeve 4121 is rotatably installed in the installation groove through the pin shaft, and one side of the pivot sleeve 4121 is connected to one end of the fixed sleeve 4123 through the connecting cylinder 4122; the rack fixing member 413 is installed on the lower surface of the platform main board 411, and a second avoidance groove is provided on the rack fixing member 413 at a position corresponding to the installation groove, and the pivot sleeve 4121 rotates in the rotation space formed by the first avoidance groove, the installation groove and the second avoidance groove through the pin shaft.

[0046] The transverse slider 45 is provided with two identical groups, which are symmetrically distributed on the left and right sides of the connecting platform 41 and are mounted on the upper transverse axis 34; the transverse slider 45 includes a slider body 451, a first linear bearing 452, an articulated sleeve 453 and a second linear bearing 454, the slider body 451 is in the shape of a long strip, and the cross section of the slider body 451 is a convex shape placed laterally, the slider body 451 is divided into a raised portion and a main body, a straight groove 4511 is provided in the center of the raised portion of the slider body 451, and a semicircular groove 4512 is provided in the center of one side of the main body of the slider body 451, the semicircular groove 4512 is used to accommodate the articulated sleeve 453, the straight groove 4511 and the semicircular groove 4512 are used to accommodate the articulated sleeve 453, The positions correspond and intersect, and the intersecting part constitutes the swing space of the guide shaft 42. Square through grooves 4513 are respectively provided on the protruding portion and on both sides of the straight groove 4511. The square through grooves 4513 are used to accommodate the clamping member 455. The clamping member 455 includes a first clamping member 4551, a second clamping member 4552, a third clamping member 4553 and a horizontal axis 4554. The first clamping member 4551 and the second clamping member 4552 are both door frame-shaped. The first clamping member 4551 and the second clamping member 4552 are respectively tightly attached to the front and rear inner walls of the square through groove 4513. The horizontal axis 4554 connects the first clamping member 4551 and the second clamping member 4552. The end of the tension spring 44 is installed on the horizontal axis 4554. The third clamping member 4553 is L-shaped, and the third clamping member 4553 is used to simultaneously clamp the first clamping member 4551 and the second clamping member 4552 into the square through groove 4513; the articulated sleeve 453 includes an arc portion 4531 and a cylindrical portion 4532, and the arc portion 4531 includes a plane end and an arc end, one end of the cylindrical portion 4532 is connected to the plane end of the arc portion 4531, and the arc end of the arc portion 4531 is placed in the semicircular groove 4512, and the second linear bearing 454 is inserted into the interior of the cylindrical portion 4532 from the other end of the cylindrical portion 4532, and a through hole 4533 for the guide shaft 42 to pass through is opened in the center of the arc portion 4531. One end of the guide shaft 42 is fixed in the fixed sleeve 4123, and the other end of the guide shaft 42 passes through the compression spring 43, the second linear bearing 454 and the through hole 4533 of the hinge sleeve 453 in sequence and is suspended. One end of the compression spring 43 is connected to the pivot connection 412, and the other end of the compression spring 43 is connected to the second linear bearing 454. A straight circular groove 4514 is also provided on the raised portion and next to the square through groove 4513. The first linear bearing 452 is installed in the straight circular groove 4514 of the slider body 451. The upper horizontal axis 34 passes through the first linear bearing 452, and the slider body 451 slides on the upper horizontal axis 34 through the first linear bearing 452.The first linear bearing 452 is provided to facilitate the horizontal sliding of the slider body 451 , and the second linear bearing 454 is provided to facilitate the sliding of the cylindrical portion 4532 along the guide shaft 42 to avoid dry friction sliding.

[0047] like Figure 17 As shown, the transmission mechanism 5 includes a rack 51, an input gear 52, an intermediate gear 53, an output gear 54, an input transmission shaft 55, an output transmission shaft 56, a coupling 57, a third bearing 58, a fixed frame 59, a bearing seat 510, a frame fixing member 511, a first longitudinal slider 512, a second longitudinal slider 513 and a fourth linear bearing 514. There are two bearing seats 510, and the two bearing seats 510 are symmetrically installed on the fixed frame 59. The intermediate longitudinal axis 37 passes through the bearing seat 510 and the fixed frame 59 to limit lateral displacement. There are four frame fixing members 511, and the four frame fixing members 511 are respectively fixed to the four corners of the fixed frame 59. The lower horizontal axis 35 passes through the frame fixing member 511. Each bearing seat 510 is provided with two circular holes, and the third bearing 58 is arranged in the circular hole. The input transmission shaft 55 and the output transmission shaft 56 are installed parallel to the third bearing In 58, there are two couplings 57, which are respectively connected to the two ends of the output transmission shaft 56. The input gear 52 and the intermediate gear 53 are coaxially mounted on the input transmission shaft 55, and the output gear 54 is mounted on the output transmission shaft 56. The intermediate gear 53 is meshed with the output gear 54, and the input gear 52 is meshed with the rack 51. The first longitudinal slider 512 is arranged above the bearing seat 510, and the rack 51 passes through the first longitudinal slider 512 and is fixedly connected to the first longitudinal slider 512. The upper end of the rack 51 is fixedly mounted on the rack fixing member 413, and the lower end of the rack 51 is fixedly mounted in the second longitudinal slider 513. The second longitudinal slider 513 is arranged below the bearing seat 510. The first longitudinal slider 512 and the second longitudinal slider 513 are both slidably connected to the intermediate longitudinal shaft 37 through a fourth linear bearing 514.

[0048] like Figure 18 As shown, the power generation mechanism 6 is provided with two groups, and the two groups of the power generation mechanism 6 are respectively connected to the two bearing seats 510. The power generation mechanism 6 includes a generator 61 and a power generation fixed frame 62. The power generation fixed frame 62 is fixedly installed on the bearing seat 510. The generator 61 is connected to the output drive shaft 56 through the coupling 57, and the generator 61 is fixed on the power generation fixed frame 62.

[0049] The present invention works as follows:

[0050] The tension-compression combined self-regulating bistable wave energy converter of the present invention is floated on the waves, wherein the upper end of the guide rod 2 is vertically fixed on a floating breakwater or similar structure, the float body 1 oscillates up and down under the excitation of the waves, and the end cover 12 slides in the vertical direction relative to the guide rod 2. Figure 15 As shown, the balance plane of the float body 1 oscillating up and down coincides with the horizontal plane where the two optical axes of the upper horizontal axis 34 are located. At this time, the guide shaft 42, the compression spring 43, the pivot connection 412, the platform mainboard 411, the second linear bearing 454, and the articulated sleeve 453 are all located on the balance plane.

[0051] from Figures 14 to 15 As shown, the guide rod 2 is fixed in the vertical direction. Under the excitation of waves, the float body 1 is above the equilibrium plane and moves downward to the equilibrium plane. The float body 1 moves downward along the axis of the guide rod 2. The platform main plate 411 moves upward relative to the float body 1. The guide connecting plate 414 and the guide rod 2 fixedly connected to the upper surface of the platform main plate 411 move upward relative to each other. The rack fixing member 413 and the rack 51 fixedly connected to the lower surface of the platform main plate 411 also move upward relative to each other. Due to the relative upward movement of the platform main plate 411, the two left and right pivot connecting members 412 connected to the pivot shaft 412 move upward and rotate relative to each other. The angle between the two pivot connecting members 412 gradually increases to 180 degrees. The guide shaft 42 fixedly connected to the pivot connecting member 412 rotates with the pivot connecting member 412. The compression spring 43 on the guide shaft 42 rotates with the guide shaft 42 and is compressed to store elastic potential energy. Under the action of the compression spring 43, the second linear bearing 454 The hinge sleeve 453 slides axially along the guide shaft 42, thereby driving the hinge sleeve 453 to slide axially along the guide shaft 42, and then driving the transverse slider 45 to slide on the upper transverse shaft 34, that is, the transverse sliders 45 on the left and right sides slide in a direction away from each other. At this time, the tension spring 44 is stretched and also stores elastic potential energy. Therefore, the combined use of the compression spring and the tension spring can both store elastic potential energy. Compared with a bistable mechanism with only a compression spring but no tension spring, the problem of excessive potential barrier when the compression spring 43 acts alone is avoided, and the potential barrier has the effect of self-regulation. Because the compression spring 43 is sleeved on the guide shaft 42 and the tension spring 44 is always in a stretched state, neither the compression spring 43 nor the tension spring 44 will bend during operation. Moreover, the self-regulating bistable mechanism 4 is triangular in shape when moving, and the structure is compact and takes up little space, making the mechanism more stable.

[0052] Further, such as Figure 15 and Figure 16As shown, when the float body 1 continues to move downward across the balance plane, that is, the float body 1 continues to move downward along the axis of the guide rod 2, the platform mainboard 411 moves upward relative to the float body 1 to above the balance plane, and the horizontal sliders 45 on the left and right sides slide toward each other. At this time, the tension spring 44 and the compression spring 43 simultaneously release potential energy, which is then converted into kinetic energy of the wave energy converter, thereby increasing the motion response of the wave energy converter.

[0053] Furthermore, when the rack 51 moves upward with the platform mainboard 411 relative to the float body 1, the first longitudinal slider 512 and the second longitudinal slider 513 fixedly connected to the rack 51 slide on the intermediate longitudinal shaft 37. Since the input gear 52 is engaged with the rack 51, and as shown in FIG. Figure 16 As shown, the meshing working surface of rack 51 faces left, so rack 51 drives input gear 52 to rotate counterclockwise. The first longitudinal slider 512 and the second longitudinal slider 513 ensure meshing accuracy. Input gear 52 drives input drive shaft 55 to rotate counterclockwise, which in turn drives intermediate gear 53 to rotate counterclockwise. Since intermediate gear 53 meshes with output gear 54, it drives output gear 54 to rotate clockwise, which in turn drives output drive shaft 56 to rotate clockwise. Output drive shaft 56 drives generator 61 through coupling 57 to generate electricity. By adjusting the transmission ratio between intermediate gear 53 and output gear 54 and further increasing the number of transmission gear stages, the output drive shaft 56 can output a suitable speed for power generation under different sea conditions.

[0054] Similarly, in the opposite direction, Figure 16 to Figure 15 Then to Figure 14 As shown, under wave excitation, when the float body 1 moves upward, the platform mainboard 411 moves downward relative to the float body 1, which is eventually converted into a counterclockwise rotation of the output transmission shaft 56, thereby driving the generator 61 to generate electricity.

[0055] When removing the compression spring 43 of the self-adjusting bistable mechanism 4, an external force stretches the tension spring 44, causing the two transverse sliders 45 on either side to move away from each other until the guide shaft 42 is completely free of the transverse slider 45. The compression spring 43 can then be removed by removing the articulated sleeve 453 and the second linear bearing 454 from the guide shaft 42. The tension spring 44 can be removed by removing the clip 455, thereby facilitating adjustment of the operating parameters of the self-adjusting bistable mechanism 4. Because the barrier of the self-adjusting bistable mechanism 4 is self-adjusting, it is easier to achieve inter-well oscillation than conventional bistable mechanisms with fixed barriers, thereby expanding the motion amplitude and increasing the power generation efficiency of the generator 61.

[0056] 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 tension-compression combined self-regulating bistable wave energy converter, characterized by: It comprises a float body (1), a guide rod (2), a fixing mechanism (3), a self-adjusting bistable mechanism (4), a transmission mechanism (5), a power generation mechanism (6) and a counterweight mechanism (7); The float body (1) is composed of a cylindrical buoy (11) and an end cover (12) that are detachably connected. A through hole is provided in the center of the end cover (12) to cooperate with the guide rod (2). The fixing mechanism (3) is fixedly installed inside the cylindrical buoy (11). The fixing mechanism (3) is used to fix the self-adjusting bistable mechanism (4), the transmission mechanism (5) and the power generation mechanism (6). The counterweight mechanism (7) is fixedly installed on the bottom plate of the cylindrical buoy (11). The end cover (12) and the guide rod (2) are arranged in a sliding manner, and the counterweight mechanism (7) includes a plurality of counterweight blocks evenly distributed on the bottom plate of the cylindrical float (11); the self-adjusting bistable mechanism (4) is a tension-compression combination, including two anti-bending compression spring mechanisms arranged on the left and right and two tension spring mechanisms arranged in the front and back, wherein the anti-bending compression spring mechanism includes a compression spring (43) and a guide shaft (42), and the tension spring mechanism includes a tension spring (44) and a clamping member (455); the self-adjusting The bistable mechanism (4) further comprises a transverse slider (45), wherein the transverse slider (45) is provided with two identical groups, wherein the transverse slider (45) comprises a slider body (451), wherein the slider body (451) is divided into a raised portion and a main body, wherein a straight groove (4511) is provided at the center of the raised portion of the slider body (451), and a semicircular groove (4512) is provided at the center of one side of the main body of the slider body (451), wherein the straight groove (4511) and the semicircular groove (4512) correspond to each other in position and intersect with each other, and the intersecting portion constitutes a swing space for the guide shaft (42); square through grooves (4513) are provided on the raised portion and on both sides of the straight groove (4511), respectively, and the square through grooves (4513) are used to accommodate the clamping member (455); the two anti-bending compression spring mechanisms arranged on the left and right and the two tension spring mechanisms arranged on the front and back work in coordination, and can automatically adjust the potential barrier, easily realize inter-well oscillation, thereby expanding the motion amplitude and improving the energy capture efficiency.

2. The tension-compression combined self-regulating bistable wave energy converter according to claim 1, characterized in that: The fixing mechanism (3) comprises an upper fixing portion (31), a lower fixing portion (32), a bottom fixing portion (33), an upper transverse axis (34), a lower transverse axis (35), a lateral longitudinal axis (36), an intermediate longitudinal axis (37) and an intermediate connecting member (38). The upper transverse axis (34), the lower transverse axis (35), the lateral longitudinal axis (36) and the intermediate longitudinal axis (37) are all composed of two symmetrical optical axes. The lateral longitudinal axis (36) is respectively provided on the left and right sides of the cylindrical float (11). The lateral longitudinal axis (36) on the left and the lateral longitudinal axis (36) on the right are respectively provided on the left and right sides of the cylindrical float (11). 6) and the middle longitudinal axis (37) are vertically parallel to each other, the upper transverse axis (34) and the lower transverse axis (35) are horizontally parallel, the upper transverse axis (34) is horizontally arranged at the upper end of the cylindrical buoy (11), the lower transverse axis (35) is horizontally arranged in the middle of the cylindrical buoy (11), the middle longitudinal axis (37) is vertically arranged in the center of the cylindrical buoy (11), and the middle longitudinal axis (37) is located on the plane of the symmetry axis of the side longitudinal axes (36) on the left and right sides, wherein the upper transverse axis The two ends of the lower transverse axis (35) are respectively fixedly connected to the upper ends of the side longitudinal axes (36) on the left and right sides through the upper fixing portion (31), and the two ends of the lower transverse axis (35) are respectively fixedly connected to the lower ends of the side longitudinal axes (36) on the left and right sides through the lower fixing portion (32). The top end of the middle longitudinal axis (37) is fixedly connected to the middle part of the upper transverse axis (34) through the middle connecting piece (38). The upper fixing portion (31) is fixedly arranged on both sides of the top end of the cylindrical buoy (11), and the lower fixing portion (32) is fixedly arranged on the upper transverse axis (34). On both sides of the middle of the cylindrical float (11), the bottom end of the intermediate longitudinal axis (37) is fixed to the center of the bottom plate of the cylindrical float (11) through the bottom fixing portion (33), the intermediate longitudinal axis (37) passes over the lower transverse axis (35) and does not contact the lower transverse axis (35), the spacing between the two optical axes of the lower transverse axis (35) is equal to the spacing between the two optical axes of the upper transverse axis (34), and the spacing between the two optical axes of the intermediate longitudinal axis (37) is greater than the spacing between the two optical axes of the lower transverse axis (35).

3. The tension-compression combined self-regulating bistable wave energy converter according to claim 2, characterized in that: Each of the upper fixing parts (31) includes a side wall fixing part (311), an axial end fixing part (312) and a packaging fixing part (313), wherein the axial end fixing part (312) is a convex block structure, and the side of the convex block structure is used to fix the axial end of the upper transverse axis (34), and a threaded hole is provided on the protruding part of the axial end fixing part (312) for connecting with the side wall fixing part (311), and the packaging fixing part (313) is a rectangular block structure, and the side wall fixing part (311) is fixedly installed on the inner wall of the cylindrical buoy (11), and the side wall fixing part (311) is long and one side is set to be arc-shaped, which matches the curvature of the cylindrical buoy (11). A first-level rectangular groove (3111) having the same thickness as the package fixing member (313) is provided on one side of the package fixing member (311), the first-level rectangular groove (3111) being in the shape of a horizontally arranged long strip, a second-level rectangular groove (3112) cooperating with the protruding portion of the shaft end fixing member (312) is provided downwardly in the middle of the first-level rectangular groove (3111), and a third-level rectangular groove (3113) is provided at each end of the first-level rectangular groove (3111), the groove width of the two third-level rectangular grooves (3113) being the same as the optical axis diameter of the upper transverse axis (34), and the two third-level rectangular grooves (3113) being used to accommodate the shaft end of the upper transverse axis (34), thereby Two bosses of the same size are formed between the two three-level rectangular grooves (3113), and the two bosses are respectively fixed with the two package fixing members (313). A through hole with the same size as the optical axis diameter of the side longitudinal axis (36) is provided in the center of the boss for inserting and installing the upper end of the side longitudinal axis (36). Threaded blind holes are respectively provided on both sides of the through hole of the boss for fixing with the package fixing member (313); each of the lower fixing parts (32) includes a lower wall fixing member (321) and an axis end fixing member (312), and the lower wall fixing member (321) is the same size as the side wall fixing member (311). The lower wall fixing member (321) is the same size as the side wall fixing member (311). ) is in the shape of an elongated strip and one side is in the shape of an arc, which matches the curvature of the cylindrical float (11); a first rectangular groove (3211) is provided at the center of one side of the lower wall fixing piece (321) to cooperate with the protrusion of the shaft end fixing piece (312); a second rectangular groove (3212) is provided at each end of the same side of the lower wall fixing piece (321); the groove width of the two second rectangular grooves (3212) is the same as the optical axis diameter of the lower horizontal axis (35); the two second rectangular grooves (3212) are used to accommodate the shaft end of the lower horizontal axis (35); circular blind holes are provided on both sides of the upper end surface of the lower wall fixing piece (321) to accommodate the lower end of the side longitudinal axis (36);The bottom fixing portion (33) includes a bottom supporting member (331) and a bottom positioning frame (332), wherein the bottom supporting member (331) is a rectangular block, and the bottom positioning frame (332) is a rectangular frame fixed to the center of the bottom plate of the cylindrical buoy (11). The bottom positioning frame (332) is provided with a positioning groove capable of accommodating the bottom supporting member (331), and circular through holes with the same size as the optical axis diameter of the middle longitudinal axis (37) are respectively provided at both ends of the bottom supporting member (331) for The lower end of the intermediate longitudinal axis (37) is accommodated; the intermediate connecting member (38) is a rectangular parallelepiped structure, a horizontal through hole is provided on the intermediate connecting member (38) for passing the upper transverse axis (34), and a vertical through hole is provided on the intermediate connecting member (38) for passing the intermediate longitudinal axis (37), the horizontal through hole and the vertical through hole are arranged in different planes in space, and the upper transverse axis (34) and the intermediate longitudinal axis (37) are fixed to the intermediate connecting member (38) by fastening screws.

4. A tension-compression combined self-regulating bistable wave energy converter according to claim 2 or 3, characterized in that: The self-adjusting bistable mechanism (4) includes a connecting platform (41) and a transverse slider (45); and also includes two anti-bending compression spring mechanisms arranged left and right and two tension spring mechanisms arranged front and back, wherein the anti-bending compression spring mechanism includes a compression spring (43) and a guide shaft (42), and the tension spring mechanism includes a tension spring (44) and a clamping member (455). The connecting platform (41) includes a platform main board (411), a pivot connection member (412), a rack fixing member (413) and a guide connecting plate (414), wherein a top threaded hole is provided at the center of the upper surface of the guide connecting plate (414), and the bottom end of the guide rod (2) is fixedly installed in the top threaded hole. The guide connecting plate (414) is fixed to the upper surface of the platform main board (411), and mounting grooves are respectively provided at the centers of both sides of the platform main board (411). One end of the pivot connection member (412) is rotatably installed in the mounting groove through a pin shaft, and a first avoidance groove is provided on the guide connecting plate (414) at a position corresponding to the mounting groove; the pivot connection member ( 412) comprises a pivot sleeve (4121), a connecting cylinder (4122) and a fixed sleeve (4123), wherein the pivot sleeve (4121) is rotatably mounted in the mounting groove via the pin shaft, and one side of the pivot sleeve (4121) is connected to one end of the fixed sleeve (4123) via the connecting cylinder (4122); the rack fixing member (413) is mounted on the lower surface of the platform mainboard (411), and a second avoidance groove is provided on the rack fixing member (413) at a position corresponding to the mounting groove, and the pivot sleeve (4121) rotates in a rotation space formed by the first avoidance groove, the mounting groove and the second avoidance groove via the pin shaft; The transverse slider (45) is provided with two identical groups, which are symmetrically distributed on the left and right sides of the connecting platform (41) and are mounted on the upper transverse axis (34); the transverse slider (45) includes a slider body (451), a first linear bearing (452), an articulated sleeve (453) and a second linear bearing (454); the slider body (451) is in the shape of a long strip, and the cross section of the slider body (451) is a convex shape placed laterally; the slider body (451) is divided into a raised portion and a main body; a straight groove (4511) is provided in the center of the raised portion of the slider body (451); a semicircular groove (4512) is provided in the center of one side of the main body of the slider body (451); the semicircular groove (4512) is used to accommodate the articulated sleeve (453); the straight groove (4511) and the semicircular groove (4512) correspond to each other and intersect with each other, and the intersecting part constitutes the swing space of the guide shaft (42); A square through groove (4513) is provided on both sides of the straight groove (4511), and the square through groove (4513) is used to accommodate the clamping member (455). The clamping member (455) includes a first clamping member (4551), a second clamping member (4552), a third clamping member (4553) and a transverse axis (4554). The first clamping member (4551) and the second clamping member (4552) are both door frame-shaped. The first clamping member (4551) and the second clamping member (4552) are respectively in close contact with the front and rear inner walls of the square through slot (4513); the transverse axis (4554) connects the first clamping member (4551) and the second clamping member (4552); the end of the tension spring (44) is mounted on the transverse axis (4554); the third clamping member (4553) is L-shaped, and the third clamping member (4553) is used to simultaneously clamp the first clamping member (4551) and the second clamping member (4552) into the square through slot (4513);The articulated sleeve (453) includes an arc portion (4531) and a cylindrical portion (4532), the arc portion (4531) includes a plane end and an arc end, one end of the cylindrical portion (4532) is connected to the plane end of the arc portion (4531), the arc end of the arc portion (4531) is placed in the semicircular groove (4512), the second linear bearing (454) is inserted into the interior of the cylindrical portion (4532) from the other end of the cylindrical portion (4532), a through hole (4533) for allowing the guide shaft (42) to pass through is opened through the center of the arc portion (4531), one end of the guide shaft (42) is fixed in the fixed sleeve (4123), and the other end of the guide shaft (42) is passed through in sequence. After passing through the through hole (4533) of the compression spring (43), the second linear bearing (454) and the hinge sleeve (453), the compression spring (43) is connected to the pivot connection member (412) at one end, and the other end of the compression spring (43) is connected to the second linear bearing (454). A straight circular groove (4514) is also provided on the protruding portion and next to the square through groove (4513). The first linear bearing (452) is installed in the straight circular groove (4514) of the slider body (451). The upper horizontal shaft (34) passes through the first linear bearing (452). The slider body (451) slides on the upper horizontal shaft (34) through the first linear bearing (452).

5. The tension-compression combined self-regulating bistable wave energy converter according to claim 4, characterized in that: The transmission mechanism (5) comprises a rack (51), an input gear (52), an intermediate gear (53), an output gear (54), an input transmission shaft (55), an output transmission shaft (56), a coupling (57), a third bearing (58), a fixed frame (59), a bearing seat (510), a frame fixing member (511), a first longitudinal slider (512), a second longitudinal slider (513) and a fourth linear bearing (514), wherein two bearing seats (510) are provided, and the two bearing seats (510) are symmetrically mounted on the fixed frame (59). ), the intermediate longitudinal axis (37) passes through the bearing seat (510) and the fixed frame (59) to limit lateral displacement, four frame fixing members (511) are provided, and the four frame fixing members (511) are respectively fixed to the four corners of the fixed frame (59), the lower transverse axis (35) passes through the frame fixing member (511), each of the bearing seats (510) is provided with two circular holes, and the third bearing (58) is provided in the circular holes, and the input transmission shaft (55) and the output transmission shaft (56) are installed parallel to the third shaft In the bearing (58), two couplings (57) are provided, which are respectively connected to the two ends of the output transmission shaft (56). The input gear (52) and the intermediate gear (53) are coaxially mounted on the input transmission shaft (55). The output gear (54) is mounted on the output transmission shaft (56). The intermediate gear (53) is meshed with the output gear (54). The input gear (52) is meshed with the rack (51). The first longitudinal slider (512) is arranged above the bearing seat (510). The rack (51) passes through the first longitudinal slider (512) and is fixedly connected to the first longitudinal slider (512), the upper end of the rack (51) is fixedly installed on the rack fixing member (413), the lower end of the rack (51) is fixedly installed in the second longitudinal slider (513), the second longitudinal slider (513) is arranged below the bearing seat (510), and the first longitudinal slider (512) and the second longitudinal slider (513) are both slidably connected to the intermediate longitudinal shaft (37) through a fourth linear bearing (514).

6. The tension-compression combined self-regulating bistable wave energy converter according to claim 5, characterized in that: The power generation mechanism (6) is provided with two groups, and the two groups of power generation mechanisms (6) are respectively connected to the two bearing seats (510). The power generation mechanism (6) includes a generator (61) and a power generation fixed frame (62). The power generation fixed frame (62) is fixedly installed on the bearing seat (510). The generator (61) is connected to the output transmission shaft (56) through the coupling (57), and the generator (61) is fixed on the power generation fixed frame (62).

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