Variable-spacing wake flow vibration energy collecting device

Abstract

The invention relates to the technical field of wake flow vibration energy collection, in particular to a variable-spacing wake flow vibration energy collection device which comprises a fixed support, a wake flow vibration interference mechanism and an energy collection mechanism, the fixed support comprises a longitudinally arranged groove-shaped guide rail with an upward notch, the front end of the groove-shaped guide rail is provided with an end wall, and the rear end of the groove-shaped guide rail is provided with an opening; the wake vibration interference mechanism comprises a front clamping base, a square column-shaped blunt end body, a front clamping top seat, a front elastic beam and two wind receiving sheets, and the energy collection mechanism comprises a rear clamping base, a cylindrical blunt end body, a rear clamping top seat, a rear elastic beam and a piezoelectric composite fiber material sheet. The wake flow vibration energy collection device solves the problem that a traditional wake flow vibration energy collection device is low in energy collection efficiency and is suitable for wake flow vibration energy collection.

Description

Technical Field

[0001] The invention relates to the technical field of wake vibration energy collection, in particular to a wake vibration energy collection device with variable spacing. Background Art

[0002] Wake vibration is a novel vibration form of flow-induced vibration, which contains a lot of energy. In order to utilize the energy contained in wake vibration, wake vibration energy harvesting devices have received widespread attention. However, in practical applications, due to the limitations of their own structure, traditional wake vibration energy harvesting devices cannot adaptively adjust the distance between the interfering blunt head body and the energy collection blunt head body when the wind speed changes. As a result, it is impossible to stably obtain a large-amplitude vibration response when the wind speed changes, resulting in low energy collection efficiency. Based on this, it is necessary to invent a wake vibration energy harvesting device with a variable spacing to solve the problem of low energy collection efficiency of traditional wake vibration energy harvesting devices. Summary of the invention

[0003] In order to solve the problem of low energy collection efficiency of traditional wake vibration energy collection devices, the present invention provides a wake vibration energy collection device with a variable spacing.

[0004] The present invention is achieved by adopting the following technical solutions: A wake vibration energy collection device with variable spacing includes a fixed support, a wake vibration interference mechanism, and an energy collection mechanism; The fixed support comprises a grooved guide rail which is arranged longitudinally and has a groove facing upward; The front end of the grooved guide rail is provided with an end wall, and the rear end is provided with an opening; the inner side surface of the grooved guide rail is provided with a plurality of pairs of hemispherical concave holes which are symmetrical on both sides, and each pair of hemispherical concave holes is arranged equidistantly from front to back; the inner bottom surface of the grooved guide rail is provided with a strip-shaped concave cavity; the side surface of the strip-shaped concave cavity is fixed with a plurality of pairs of pivots which are symmetrical on both sides, and each pair of pivots is arranged equidistantly from front to back; each pair of pivots is supported by a cylindrical roller for common rotation; the groove of the grooved guide rail is fixedly covered with a strip cover plate; a strip window is provided through the strip cover plate; The wake vibration interference mechanism comprises a front clamping base, a square columnar blunt head body, a front clamping top seat, a front elastic beam, and two wind receiving sheets; The front clamping base is slidably embedded in the inner cavity of the grooved guide rail, and the clamping groove of the front clamping base faces upward; the clamping groove of the front clamping base is exposed through a strip window; the back of the front clamping base is detachably in contact with the outer side surfaces of several cylindrical rollers; the side of the front clamping base is provided with two cylindrical recessed holes symmetrically on both sides; a compression spring and a ball are embedded in each cylindrical recessed hole; the two balls respectively press the two compression springs, and the two balls are detachably embedded in one of the pairs of semi-circular rollers. The front clamping base is provided with a tension spring between the front side surface and the front inner end surface of the grooved guide rail; the square column blunt head body is arranged upright; the back surface of the front clamping top seat is fixed to the lower end surface of the square column blunt head body, and the clamping groove of the front clamping top seat faces downward; the front elastic beam is a sheet structure; the upper end of the front elastic beam is clamped and fixed in the clamping groove of the front clamping top seat; the lower end of the front elastic beam is clamped and fixed in the clamping groove of the front clamping base; two wind receiving sheets are symmetrically fixed upright on the front of the front clamping base; The energy collection mechanism comprises a rear clamping base, a cylindrical blunt body, a rear clamping top seat, a rear elastic beam, and a piezoelectric composite fiber material sheet; The rear clamping base is fixedly embedded in the rear part of the inner cavity of the grooved guide rail, and the clamping groove of the rear clamping base faces upward; the clamping groove of the rear clamping base is exposed through the strip window; the cylindrical blunt head body is arranged upright; the back side of the rear clamping top seat is fixed to the lower end face of the cylindrical blunt head body, and the clamping groove of the rear clamping top seat faces downward; the rear elastic beam is a sheet structure; the upper end of the rear elastic beam is clamped and fixed in the clamping groove of the rear clamping top seat; the lower end of the rear elastic beam is clamped and fixed in the clamping groove of the rear clamping base; the piezoelectric composite fiber material sheet is adhered and fixed to the lower part of the right side of the rear elastic beam.

[0005] Furthermore, two blind fastening screw holes are provided at the rear portion of the inner bottom surface of the grooved guide rail; two accommodating holes are provided at the rear portion of the strip cover plate; two fastening holes are provided at the rear clamping base; two fastening bolts are respectively passed through the two fastening holes, and the tail ends of the two fastening bolts are respectively screwed into the two fastening blind screw holes; the heads of the two fastening bolts are respectively located in the two accommodating holes.

[0006] Furthermore, a blind assembly screw hole is provided at each of the four corners of the upper surface of the grooved guide rail; a through assembly hole is provided at each of the four corners of the strip cover plate; four assembly bolts are passed through the four assembly holes one by one, and the tail ends of the four assembly bolts are screwed into the four assembly blind screw holes one by one.

[0007] Furthermore, a connecting blind screw hole is respectively provided on the left outer front part, the left outer rear part, the right outer front part, and the right outer rear part of the grooved guide rail; the fixed support also includes four support rods, eight connecting angle pieces, sixteen connecting bolts, and twelve connecting nuts; the four support rods are square rods; the four sides of each support rod are provided with a strip slide groove with an inverted T-shaped cross section along the length direction; the first support rod is arranged horizontally, and the middle part of the rear side surface of the first support rod contacts the front outer end surface of the grooved guide rail; the second support rod is arranged horizontally, and the middle part of the front side surface of the second support rod contacts the rear end surface of the grooved guide rail; the third support rod is arranged longitudinally, and the The two end surfaces are in contact with the left part of the rear side surface of the first support rod and the left part of the front side surface of the second support rod respectively; the fourth support rod is arranged longitudinally, and the two end surfaces of the fourth support rod are in contact with the right part of the rear side surface of the first support rod and the right part of the front side surface of the second support rod respectively; eight connecting angle pieces are embedded in the corner between the rear side surface of the first support rod and the right side surface of the third support rod, the corner between the rear side surface of the first support rod and the left outer side surface of the groove guide rail, the corner between the rear side surface of the first support rod and the right outer side surface of the groove guide rail, the corner between the rear side surface of the first support rod and the left side surface of the fourth support rod, the corner between the front side surface of the second support rod and the third The corner between the right side of the first support rod, the corner between the front side of the second support rod and the left outer side of the grooved guide rail, the corner between the front side of the second support rod and the right outer side of the grooved guide rail, and the corner between the front side of the second support rod and the left side of the fourth support rod; eight pairs of connecting strip holes and four connecting blind screw holes of eight connecting angle pieces, the left part of the strip slide on the rear side of the first support rod, the left middle part of the strip slide on the rear side of the first support rod, the right middle part of the strip slide on the rear side of the first support rod, the right part of the strip slide on the rear side of the first support rod, the left part of the strip slide on the front side of the second support rod, the left middle part of the strip slide on the front side of the second support rod, The right middle part of the strip slide on the front side of the second support rod, the right part of the strip slide on the front side of the second support rod, the front part of the strip slide on the right side of the third support rod, the rear part of the strip slide on the right side of the third support rod, the front part of the strip slide on the left side of the fourth support rod, and the rear part of the strip slide on the left side of the fourth support rod correspond one by one; sixteen connecting bolts pass through the eight pairs of connecting strip holes of the eight connecting angle pieces one by one, and the heads of the sixteen connecting bolts are all facing outwards; the tail ends of four of the connecting bolts are screwed into the four connecting blind screw holes one by one; the twelve connecting nuts are screwed into the tail ends of the remaining twelve connecting bolts one by one; each connecting nut is slidably embedded in the corresponding strip slide.

[0008] Furthermore, the grooved guide rail, the strip cover plate, the front clamping base, the front clamping top seat, the rear clamping base and the rear clamping top seat are all made of polylactic acid; the square columnar blunt head body and the cylindrical blunt head body are all made of polylactic acid or polystyrene foam plastic; the front elastic beam and the rear elastic beam are all made of steel or copper; the two wind receiving pieces are both wing-shaped structures; the two compression springs are both springs with a base on one side; the two balls are both made of metal; the tension spring is a spring with a base on both sides.

[0009] Furthermore, the two fastening bolts are both hexagon socket bolts.

[0010] Furthermore, the four assembly bolts are all hexagon socket bolts.

[0011] Furthermore, the four support rods are all made of metal; the sixteen connecting bolts are all hexagon socket bolts; and the twelve connecting nuts are all square nuts.

[0012] Compared with traditional wake vibration energy collection devices, the variable-spacing wake vibration energy collection device described in the present invention adopts a brand-new structure to achieve adaptive adjustment of the spacing between the interference blunt-nosed body (i.e., the square cylindrical blunt-nosed body) and the energy collection blunt-nosed body (i.e., the cylindrical blunt-nosed body) when the wind speed changes. Therefore, on the one hand, wake vibration energy collection is achieved by using vortex-induced vibration at lower wind speeds, and on the other hand, wake vibration energy collection is achieved by using galloping vibration at higher wind speeds, thereby achieving stable and large-amplitude vibration response when the wind speed changes, thereby effectively improving the energy collection efficiency.

[0013] The present invention effectively solves the problem of low energy collection efficiency of traditional wake vibration energy collection devices and is suitable for wake vibration energy collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 yes Figure 1 Partial structure diagram Figure 1 .

[0016] Figure 3 yes Figure 2 Schematic diagram of part of the structure.

[0017] Figure 4 yes Figure 3 Schematic diagram of part of the structure.

[0018] Figure 5 yes Figure 4 Schematic diagram of part of the structure.

[0019] Figure 6 yes Figure 5 Another angle diagram of the structure.

[0020] Figure 7 yes Figure 5 Schematic diagram of part of the structure.

[0021] Figure 8 yes Figure 7 Another angle diagram of the structure.

[0022] Fig. 9 It is a structural schematic diagram of the strip cover plate in the present invention.

[0023] Fig.10 It is a structural schematic diagram of the support rod in the present invention.

[0024] Fig.11 It is a structural schematic diagram of a connecting angle piece, a pair of connecting bolts, and a pair of connecting nuts in the present invention.

[0025] Fig.12 yes Figure 1 Partial structure diagram Figure 2 .

[0026] Fig.13 yes Fig.12 Schematic diagram of part of the structure.

[0027] Fig.14 yes Fig.13 Schematic diagram of part of the structure.

[0028] Fig.15 It is a structural schematic diagram of the front clamping base in the present invention.

[0029] Fig.16 It is a schematic structural diagram of one compression spring and one ball in the present invention.

[0030] Fig.17 It is a schematic structural diagram of another compression spring and another ball in the present invention.

[0031] Fig.18 It is a structural schematic diagram of the extension spring in the present invention.

[0032] Fig.19 yes Figure 1 Partial structure diagram Figure 3 .

[0033] Fig. 20 It is a structural schematic diagram of the rear clamping base in the present invention.

[0034] Fig.21 yes Fig.12 Another angle diagram of the structure.

[0035] Fig. 22 yes Fig.21 Schematic diagram of part of the structure.

[0036] Fig.23 yes Fig. 22 Schematic diagram of part of the structure.

[0037] Fig.24 yes Fig.19 Another angle diagram of the structure.

[0038] Fig.25 yes Fig.24 Schematic diagram of part of the structure.

[0039] Fig.26 yes Fig.25 Schematic diagram of part of the structure.

[0040] In the figure: 101-groove guide rail, 101a-hemispherical concave hole, 101b-strip concave cavity, 101c-fastening blind screw hole, 101d-assembly blind screw hole, 101e-connection blind screw hole, 102-pivot, 103-cylindrical roller, 104-strip cover plate, 104a-strip window, 104b-accommodation hole, 104c-assembly hole, 105-assembly bolt, 106-support rod, 107-connection angle piece, 108-connection bolt, 109-connection Connecting nut, 201-front clamping base, 201a-cylindrical concave hole, 202-square cylindrical blunt head body, 203-front clamping top seat, 204-front elastic beam, 205-wind receiving piece, 206-compression spring, 207-ball, 208-tension spring, 301-rear clamping base, 301a-fastening hole, 302-cylindrical blunt head body, 303-rear clamping top seat, 304-rear elastic beam, 305-piezoelectric composite fiber material sheet, 306-fastening bolt. DETAILED DESCRIPTION

[0041] A wake vibration energy collection device with variable spacing includes a fixed support, a wake vibration interference mechanism, and an energy collection mechanism; The fixed support includes a grooved guide rail 101 which is arranged longitudinally and has a groove facing upward; The front end of the grooved guide rail 101 is provided with an end wall, and the rear end is provided with an opening; the inner side surface of the grooved guide rail 101 is provided with a plurality of pairs of bilaterally symmetrical hemispherical concave holes 101a, and each pair of hemispherical concave holes 101a is arranged equidistantly from front to back; the inner bottom surface of the grooved guide rail 101 is provided with a strip-shaped concave cavity 101b; the side surface of the strip-shaped concave cavity 101b is fixed with a plurality of pairs of bilaterally symmetrical pivots 102, and each pair of pivots 102 is arranged equidistantly from front to back; each pair of pivots 102 is supported and rotatably supported by a cylindrical roller 103; the groove of the grooved guide rail 101 is fixedly covered with a strip cover plate 104; a strip window 104a is provided through the strip cover plate 104; The wake vibration interference mechanism includes a front clamping base 201, a square columnar blunt body 202, a front clamping top seat 203, a front elastic beam 204, and two wind receiving sheets 205; The front clamping base 201 is slidably embedded in the inner cavity of the grooved guide rail 101, and the clamping groove of the front clamping base 201 faces upward; the clamping groove of the front clamping base 201 is exposed through the strip window 104a; the back of the front clamping base 201 is in detachable contact with the outer side surfaces of several cylindrical rollers 103; the side of the front clamping base 201 is provided with two left-right symmetrical cylindrical recessed holes 201a; each cylindrical recessed hole 201a is embedded with a compression spring 206 and a ball 207; the two balls 207 respectively press the two compression springs 206, and the two balls 207 are respectively detachably embedded in one of the pairs of The front side of the front clamping base 201 and the front inner end face of the grooved guide rail 101 are fixed with a tension spring 208; the square columnar blunt head body 202 is arranged upright; the back of the front clamping top seat 203 is fixed to the lower end face of the square columnar blunt head body 202, and the clamping groove of the front clamping top seat 203 faces downward; the front elastic beam 204 is a sheet structure; the upper end of the front elastic beam 204 is clamped and fixed in the clamping groove of the front clamping top seat 203; the lower end of the front elastic beam 204 is clamped and fixed in the clamping groove of the front clamping base 201; two wind receiving sheets 205 are fixed upright and symmetrically on the front of the front clamping base 201; The energy collection mechanism includes a rear clamping base 301, a cylindrical blunt body 302, a rear clamping top seat 303, a rear elastic beam 304, and a piezoelectric composite fiber material sheet 305; The rear clamping base 301 is fixedly embedded in the rear part of the inner cavity of the grooved guide rail 101, and the clamping groove of the rear clamping base 301 faces upward; the clamping groove of the rear clamping base 301 is exposed through the strip window 104a; the cylindrical blunt head body 302 is arranged upright; the back side of the rear clamping top seat 303 is fixed to the lower end face of the cylindrical blunt head body 302, and the clamping groove of the rear clamping top seat 303 faces downward; the rear elastic beam 304 is a sheet structure; the upper end of the rear elastic beam 304 is clamped and fixed in the clamping groove of the rear clamping top seat 303; the lower end of the rear elastic beam 304 is clamped and fixed in the clamping groove of the rear clamping base 301; the piezoelectric composite fiber material sheet 305 is adhered and fixed to the lower right side of the rear elastic beam 304.

[0042] During operation, the piezoelectric composite fiber material sheet 305 is connected to an external circuit via a copper core wire, and the present invention is placed in a wind environment so that the front sides of the two wind receiving sheets 205 face the wind.

[0043] The specific working process is as follows: when the wind speed is zero, the two wind receiving pieces 205, the front clamping base 201, the front elastic beam 204, the front clamping top seat 203, and the square column blunt head body 202 are all in the initial position, and the tension spring 208 is in a free state. When the wind speed is not zero, the wind force is applied to the two wind receiving pieces 205, so that the two wind receiving pieces 205, the front clamping base 201, the front elastic beam 204, the front clamping top seat 203, and the square column blunt head body 202 move backward together, and at the same time, the tension spring 208 extends backward.

[0044] When the wind speed is low, the displacement of the square cylindrical blunt body 202 is small, and the elongation of the tension spring 208 is small, so that the distance between the square cylindrical blunt body 202 and the cylindrical blunt body 302 is large. At this time, the coupling between the square cylindrical blunt body 202 and the cylindrical blunt body 302 is weak, and the cylindrical blunt body 302 generates vortex-induced vibration. Under the action of vortex-induced vibration, the rear elastic beam 304 generates lateral vibration, thereby driving the piezoelectric composite fiber material sheet 305 to deform and output voltage, thereby converting the kinetic energy generated by the vibration into electrical energy, and then using vortex-induced vibration to achieve wake vibration energy collection at a lower wind speed.

[0045] When the wind speed is high, the displacement of the square column blunt body 202 is large, and the elongation of the tension spring 208 is large, so that the distance between the square column blunt body 202 and the cylindrical blunt body 302 is small. At this time, the coupling effect between the square column blunt body 202 and the cylindrical blunt body 302 is strong, and the cylindrical blunt body 302 generates galloping. Under the action of galloping, the rear elastic beam 304 generates lateral vibration, thereby driving the piezoelectric composite fiber material sheet 305 to deform and output voltage, thereby converting the kinetic energy generated by the vibration into electrical energy, and then realizing the wake vibration energy collection by galloping at a higher wind speed.

[0046] In the above process, the cylindrical roller 103 can reduce the friction force when the front clamping base 201 moves backward. The compression spring 206 and the ball 207 can lock the front clamping base 201 in different positions.

[0047] Two fastening blind screw holes 101c are provided at the rear of the inner bottom surface of the grooved guide rail 101; two accommodating holes 104b are provided at the rear of the strip cover plate 104; two fastening holes 301a are provided on the rear clamping base 301; two fastening bolts 306 are respectively passed through the two fastening holes 301a, and the tail ends of the two fastening bolts 306 are respectively screwed into the two fastening blind screw holes 101c; the heads of the two fastening bolts 306 are respectively located in the two accommodating holes 104b.

[0048] A blind screw hole 101d is provided at each of the four corners of the upper surface of the grooved guide rail 101; a mounting hole 104c is provided at each of the four corners of the strip cover plate 104; four mounting bolts 105 are passed through the four mounting holes 104c one by one, and the tail ends of the four mounting bolts 105 are screwed into the four blind screw holes 101d one by one.

[0049] A connecting blind screw hole 101e is respectively provided at the left outer front part, the left outer side rear part, the right outer front part and the right outer side rear part of the grooved guide rail 101; the fixed support also includes four support rods 106, eight connecting angle pieces 107, sixteen connecting bolts 108 and twelve connecting nuts 109; the four support rods 106 are all square rods; the four sides of each support rod 106 are provided with a strip slide groove with an inverted T-shaped cross section along the length direction; the first support rod 106 is arranged horizontally, and the middle part of the rear side surface of the first support rod 106 contacts the front outer end surface of the grooved guide rail 101; the second support rod 106 is arranged horizontally, and the middle part of the front side surface of the second support rod 106 contacts the rear end surface of the grooved guide rail 101; the third support rod 106 is arranged horizontally, and the middle part of the front side surface of the second support rod 106 contacts the rear end surface of the grooved guide rail 101 The support rod 106 is arranged longitudinally, and the two end surfaces of the third support rod 106 are in contact with the left part of the rear side surface of the first support rod 106 and the left part of the front side surface of the second support rod 106 respectively; the fourth support rod 106 is arranged longitudinally, and the two end surfaces of the fourth support rod 106 are in contact with the right part of the rear side surface of the first support rod 106 and the right part of the front side surface of the second support rod 106 respectively; eight connecting angle pieces 107 are embedded in the corner between the rear side surface of the first support rod 106 and the right side surface of the third support rod 106, the corner between the rear side surface of the first support rod 106 and the left outer side surface of the grooved guide rail 101, the corner between the rear side surface of the first support rod 106 and the right outer side surface of the grooved guide rail 101, the corner between the rear side surface of the first support rod 106 and the right outer side surface of the grooved guide rail 101, the corner between the rear side surface of the first support rod 106 and the right outer side surface of the grooved guide rail 101, the corner between the rear side surface of the first support rod 106 and the right outer side surface of the grooved guide rail 101, and the corner between the rear side surface of the first support rod 106 and the right outer side surface of the grooved guide rail 101. The corner between the rear side of the first support rod 106 and the left side of the fourth support rod 106, the corner between the front side of the second support rod 106 and the right side of the third support rod 106, the corner between the front side of the second support rod 106 and the left outer side of the grooved guide rail 101, the corner between the front side of the second support rod 106 and the right outer side of the grooved guide rail 101, and the corner between the front side of the second support rod 106 and the left side of the fourth support rod 106; eight pairs of connecting strip holes and four connecting blind screw holes 101e of eight connecting corner pieces 107, the left part of the strip slide groove on the rear side of the first support rod 106, the left middle part of the strip slide groove on the rear side of the first support rod 106, and the rear side of the first support rod 106 The right middle part of the strip slide on the first support rod 106, the right part of the strip slide on the rear side of the first support rod 106, the left part of the strip slide on the front side of the second support rod 106, the left middle part of the strip slide on the front side of the second support rod 106, the right middle part of the strip slide on the front side of the second support rod 106, the right part of the strip slide on the front side of the second support rod 106, the front part of the strip slide on the right side of the third support rod 106, the rear part of the strip slide on the right side of the third support rod 106, the front part of the strip slide on the left side of the fourth support rod 106, and the rear part of the strip slide on the left side of the fourth support rod 106 correspond to each other; sixteen connecting bolts 108 pass through the eight pairs of connecting strip holes of the eight connecting angle pieces 107 in a one-to-one correspondence, and the heads of the sixteen connecting bolts 108 are all facing outwards;The tail ends of four connecting bolts 108 are screwed into the four connecting blind screw holes 101e one by one; the twelve connecting nuts 109 are screwed into the tail ends of the remaining twelve connecting bolts 108 one by one; each connecting nut 109 is slidably embedded in the corresponding strip-shaped slide groove. ;

[0050] The grooved guide rail 101, the strip cover plate 104, the front clamping base 201, the front clamping top seat 203, the rear clamping base 301, and the rear clamping top seat 303 are all made of polylactic acid; the square columnar blunt head body 202 and the cylindrical blunt head body 302 are all made of polylactic acid or polystyrene foam plastic; the front elastic beam 204 and the rear elastic beam 304 are all made of steel or copper; the two wind receiving pieces 205 are both wing-shaped structures; the two compression springs 206 are both springs with a base on one side; the two balls 207 are both made of metal; the tension spring 208 is a spring with a base on both sides.

[0051] The two fastening bolts 306 are both hexagon socket bolts.

[0052] The four assembly bolts 105 are all hexagon socket bolts.

[0053] The four support rods 106 are all made of metal; the sixteen connecting bolts 108 are all hexagon socket bolts; and the twelve connecting nuts 109 are all square nuts.

[0054] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A variable-spacing wake vibration energy harvesting device, characterized in that: It includes a fixed support, a wake vibration interference mechanism, and an energy collection mechanism; The fixed support comprises a grooved guide rail (101) which is arranged longitudinally and has a groove facing upwards; The front end of the grooved guide rail (101) is provided with an end wall, and the rear end is provided with an opening; the inner side surface of the grooved guide rail (101) is provided with a plurality of pairs of bilaterally symmetrical hemispherical concave holes (101a), and each pair of hemispherical concave holes (101a) is arranged equidistantly from front to back; the inner bottom surface of the grooved guide rail (101) is provided with a strip-shaped concave cavity (101b); the side surface of the strip-shaped concave cavity (101b) is fixed with a plurality of pairs of bilaterally symmetrical pivots (102), and each pair of pivots (102) is arranged equidistantly from front to back; each pair of pivots (102) is supported and rotatably supported by a cylindrical roller (103); the groove of the grooved guide rail (101) is fixedly covered with a strip cover plate (104); a strip window (104a) is provided through the strip cover plate (104); The wake vibration interference mechanism comprises a front clamping base (201), a square columnar blunt head body (202), a front clamping top seat (203), a front elastic beam (204), and two wind receiving plates (205); The front clamping base (201) is slidably embedded in the inner cavity of the grooved guide rail (101), and the clamping groove of the front clamping base (201) faces upward; the clamping groove of the front clamping base (201) is exposed through the strip window (104a); the back of the front clamping base (201) is in detachable contact with the outer side surfaces of several cylindrical rollers (103); the side surface of the front clamping base (201) is provided with two left-right symmetrical cylindrical recessed holes (201a); each cylindrical recessed hole (201a) is embedded with a compression spring (206) and a ball (207); the two balls (207) respectively press the two compression springs (206), and the two balls (207) are respectively detachably embedded in one of the pairs of The front clamping base (201) is provided with a tension spring (208) fixed between the front side surface of the front clamping base (201) and the front inner end surface of the grooved guide rail (101); the square columnar blunt head body (202) is arranged upright; the back surface of the front clamping top seat (203) is fixed to the lower end surface of the square columnar blunt head body (202), and the clamping groove of the front clamping top seat (203) faces downward; the front elastic beam (204) is a sheet structure; the upper end of the front elastic beam (204) is clamped and fixed in the clamping groove of the front clamping top seat (203); the lower end of the front elastic beam (204) is clamped and fixed in the clamping groove of the front clamping base (201); two wind receiving sheets (205) are symmetrically fixed upright on the front side of the front clamping base (201); The energy collection mechanism comprises a rear clamping base (301), a cylindrical blunt head body (302), a rear clamping top seat (303), a rear elastic beam (304), and a piezoelectric composite fiber material sheet (305); The rear clamping base (301) is fixedly embedded in the rear part of the inner cavity of the grooved guide rail (101), and the clamping groove of the rear clamping base (301) faces upward; the clamping groove of the rear clamping base (301) is exposed through the strip window (104a); the cylindrical blunt head body (302) is arranged upright; the back side of the rear clamping top seat (303) is fixed to the lower end face of the cylindrical blunt head body (302), and the clamping groove of the rear clamping top seat (303) faces downward; the rear elastic beam (304) is a sheet structure; the upper end of the rear elastic beam (304) is clamped and fixed in the clamping groove of the rear clamping top seat (303); the lower end of the rear elastic beam (304) is clamped and fixed in the clamping groove of the rear clamping base (301); and the piezoelectric composite fiber material sheet (305) is adhered and fixed to the lower part of the right side of the rear elastic beam (304).

2. The variable-spacing wake vibration energy harvesting device according to claim 1, characterized in that: The inner bottom surface of the grooved guide rail (101) is provided with two blind fastening screw holes (101c) at the rear; the strip cover plate (104) is provided with two receiving holes (104b) at the rear; the rear clamping base (301) is provided with two fastening holes (301a); two fastening bolts (306) are respectively passed through the two fastening holes (301a), and the tail ends of the two fastening bolts (306) are respectively screwed into the two blind fastening screw holes (101c); and the heads of the two fastening bolts (306) are respectively located in the two receiving holes (104b).

3. The variable-spacing wake vibration energy harvesting device according to claim 1, characterized in that: A blind assembly screw hole (101d) is provided at each of the four corners of the upper surface of the grooved guide rail (101); a through assembly hole (104c) is provided at each of the four corners of the strip cover plate (104); four assembly bolts (105) are passed through the four assembly holes (104c) in a one-to-one correspondence, and the tail ends of the four assembly bolts (105) are screwed into the four blind assembly screw holes (101d) in a one-to-one correspondence.

4. The variable-spacing wake vibration energy harvesting device according to claim 1, characterized in that: A connecting blind screw hole (101e) is respectively provided at the left outer front part, the left outer side rear part, the right outer front part and the right outer side rear part of the groove-shaped guide rail (101); the fixed support further comprises four support rods (106), eight connecting angle pieces (107), sixteen connecting bolts (108) and twelve connecting nuts (109); the four support rods (106) are all square rods; a strip-shaped sliding groove with an inverted T-shaped cross section is provided on the four sides of each support rod (106) along the length direction; the first support rod (106) is arranged horizontally, and The middle portion of the rear side surface of the first support rod (106) contacts the front outer end surface of the grooved guide rail (101); the second support rod (106) is arranged transversely, and the middle portion of the front side surface of the second support rod (106) contacts the rear end surface of the grooved guide rail (101); the third support rod (106) is arranged longitudinally, and the two end surfaces of the third support rod (106) respectively contact the left portion of the rear side surface of the first support rod (106) and the left portion of the front side surface of the second support rod (106); the fourth support rod (106) is arranged longitudinally, and the fourth support rod The two end surfaces of (106) are in contact with the right part of the rear side surface of the first support rod (106) and the right part of the front side surface of the second support rod (106) respectively; the eight connecting corner pieces (107) are respectively embedded in the corners between the rear side surface of the first support rod (106) and the right side surface of the third support rod (106), the corners between the rear side surface of the first support rod (106) and the left outer side surface of the grooved guide rail (101), the corners between the rear side surface of the first support rod (106) and the right outer side surface of the grooved guide rail (101), and the corners between the rear side surface of the first support rod (106) and the right outer side surface of the grooved guide rail (101). The corner between the rear side of the support rod (106) and the left side of the fourth support rod (106), the corner between the front side of the second support rod (106) and the right side of the third support rod (106), the corner between the front side of the second support rod (106) and the left outer side of the grooved guide rail (101), the corner between the front side of the second support rod (106) and the right outer side of the grooved guide rail (101), and the corner between the front side of the second support rod (106) and the left side of the fourth support rod (106);The eight pairs of connecting strip holes of the eight connecting angle pieces (107) and the four connecting blind screw holes (101e), the left portion of the strip slide on the rear side of the first support rod (106), the left middle portion of the strip slide on the rear side of the first support rod (106), the right middle portion of the strip slide on the rear side of the first support rod (106), the right portion of the strip slide on the rear side of the first support rod (106), the left portion of the strip slide on the front side of the second support rod (106), the left middle portion of the strip slide on the front side of the second support rod (106), the right middle portion of the strip slide on the front side of the second support rod (106), the right portion of the strip slide on the front side of the second support rod (106), and the front portion of the strip slide on the right side of the third support rod (106). The first and second connecting rods (107) are connected to the third supporting rod (106), the second and third supporting rods (106), and the third supporting rods (106) are connected to the fourth supporting rod (106). ...

5. The variable-spacing wake vibration energy collection device according to claim 1, characterized in that: The grooved guide rail (101), the strip cover plate (104), the front clamping base (201), the front clamping top seat (203), the rear clamping base (301), and the rear clamping top seat (303) are all made of polylactic acid; the square column blunt head body (202) and the cylindrical blunt head body (302) are all made of polylactic acid or polystyrene foam plastic; the front elastic beam (204) and the rear elastic beam (304) are all made of steel or copper; the two wind receiving pieces (205) are both wing-shaped structures; the two compression springs (206) are both springs with a base on one side; the two balls (207) are both made of metal; and the tension spring (208) is a spring with a base on both sides.

6. The variable-spacing wake vibration energy collection device according to claim 2, characterized in that: Both fastening bolts (306) are hexagon socket head bolts.

7. The variable-spacing wake vibration energy collection device according to claim 3, characterized in that: The four mounting bolts (105) are all hexagon socket head bolts.

8. The variable-spacing wake vibration energy collection device according to claim 4, characterized in that: The four support rods (106) are all made of metal; the sixteen connecting bolts (108) are all hexagon socket bolts; and the twelve connecting nuts (109) are all square nuts.

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