Vibration energy harvesting device for a track

Abstract

The present application relates to a kind of energy collection conversion device, in particular to a kind of vibration energy collection device for track, including vibration energy input unit, transmission unit, vibration energy conversion unit, the vibration energy input unit includes double-sided rack, transmission unit includes double-sided rack downward movement transmission assembly, double-sided rack upward movement transmission assembly, output shaft, when the double-sided rack downward movement, the double-sided rack downward movement transmission assembly drives the output shaft rotation, when the double-sided rack upward movement, the double-sided rack upward movement transmission assembly drives the output shaft rotation, the vibration energy conversion unit includes first generator, second generator, the first generator, the second generator is respectively connected to the output shaft both ends, the output shaft rotation drives the first generator, the second generator rotation.The double-sided rack of the present application moves upward or downward and is converted into the single direction rotation movement of output shaft, and mechanical efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to an energy collection and conversion device, in particular to a vibration energy collection device for a track. BACKGROUND

[0002] With the development of rail transportation, the power supply problem of the electrical equipment on both sides of the track is increasingly prominent. At present, these electrical equipment usually uses traditional chemical batteries for power supply, which not only causes environmental pollution but also has a relatively high maintenance cost, especially in remote areas or areas prone to extreme weather. Based on this background, how to utilize the energy in the environment and convert it into electrical energy to continuously power the equipment and form a stable and reliable self-power supply system has become a research hotspot.

[0003] The vibration energy beside the track is not limited by weather conditions compared to solar energy and wind energy. When a train passes, it will cause the track to vibrate, and with the increase of train speed and weight, the vibration amplitude and frequency also increase. In order to effectively absorb the vibration energy of the track and convert it into electrical energy, scholars at home and abroad have designed various types of structures. However, the current vibration energy collection device still has the problems of complex transmission structure and low mechanical efficiency, which restricts the further development of track vibration energy recovery and utilization technology. SUMMARY

[0004] The purpose of the present application is to provide a vibration energy collection device for a track with greatly improved mechanical efficiency.

[0005] To achieve the above purpose, the present application provides a vibration energy collection device for a track,

[0006] which comprises a vibration energy input unit, a transmission unit and a vibration energy conversion unit. The vibration energy input unit comprises a double-sided rack, which is used to connect with a vibration component and is vertically arranged. The vibration component drives the double-sided rack to move up and down in the vertical direction when it vibrates,

[0007] The transmission unit comprises a double-sided rack downward movement transmission assembly, a double-sided rack upward movement transmission assembly and an output shaft. The double-sided rack downward movement transmission assembly and the double-sided rack upward movement transmission assembly are respectively arranged on both sides of the double-sided rack and are symmetrically arranged relative to the double-sided rack. One end of the double-sided rack downward movement transmission assembly is connected with the double-sided rack, and the other end is connected with the output shaft. One end of the double-sided rack upward movement transmission assembly is connected with the double-sided rack, and the other end is connected with the output shaft. When the double-sided rack moves downward, the double-sided rack downward movement transmission assembly drives the output shaft to rotate. When the double-sided rack moves upward, the double-sided rack upward movement transmission assembly drives the output shaft to rotate,

[0008] The vibration energy conversion unit comprises a first generator and a second generator, the first generator and the second generator are connected to the two ends of the output shaft respectively, and the output shaft drives the first generator and the second generator to rotate.

[0009] Further, the double-sided rack downward moving transmission assembly comprises a first gear, a first one-way bearing, a first transmission shaft, a second gear, a third gear, the double-sided rack upward moving transmission assembly comprises a fourth gear, a second one-way bearing, a second transmission shaft, a fifth gear, a sixth gear, the first gear and the fourth gear are straight cylindrical gears, the second gear, the third gear, the fifth gear and the sixth gear are straight bevel gears, the first gear is connected to the input end of the first transmission shaft through the first one-way bearing, the second gear is connected to the output end of the first transmission shaft, the third gear is connected to one end of the output shaft, the second gear is engaged with the third gear, the fourth gear is connected to the input end of the second transmission shaft through the second one-way bearing, the fifth gear is connected to the output end of the second transmission shaft, the sixth gear is connected to the other end of the output shaft, the fifth gear and the sixth gear are engaged with each other, the first gear and the fourth gear are located on the two sides of the double-sided rack respectively, the first gear and the fourth gear are engaged with the double-sided rack, the first transmission shaft and the second transmission shaft are perpendicular to the output shaft, when the double-sided rack moves downward, the first gear drives the first transmission shaft to rotate, the fourth gear is disengaged from the second one-way bearing, when the double-sided rack moves upward, the fourth gear drives the second transmission shaft to rotate, and the first gear is disengaged from the first one-way bearing.

[0010] Further, the vibration energy input unit further comprises a first sliding rail, a second sliding rail, a first sliding block and a second sliding block, the first sliding block and the second sliding block are fixed in position, the first sliding rail and the second sliding rail are both vertically arranged, the first sliding rail and the second sliding rail are located on the two sides of the double-sided rack and connected with the double-sided rack, the double-sided rack, the first sliding rail and the second sliding rail move up and down synchronously, the first sliding rail moves up and down relative to the first sliding block, and the second sliding rail moves up and down relative to the second sliding block.

[0011] Further, the outer rings of the first one-way bearing and the second one-way bearing are respectively connected with a first flat key and a second flat key, the first gear and the fourth gear are both provided with gear holes, the first one-way bearing and the second one-way bearing are respectively located in the gear holes of the first gear and the fourth gear, and the first one-way bearing and the first gear are connected through the first flat key, and the second one-way bearing and the second gear are connected through the second flat key.

[0012] Further, the outer rings of the first one-way bearing and the second one-way bearing are respectively provided with a first key groove and a second key groove, and the first flat key and the second flat key are connected in the first key groove and the second key groove through interference fit.

[0013] Further, the first transmission shaft and the second transmission shaft are respectively connected with a third flat key and a fourth flat key, and the first transmission shaft and the second transmission shaft are respectively connected to the inner rings of the first one-way bearing and the second one-way bearing through the third flat key and the fourth flat key.

[0014] Further, the first transmission shaft and the second transmission shaft are respectively provided with a third key groove and a fourth key groove, and the third flat key and the fourth flat key are connected in the third key groove and the fourth key groove through interference fit.

[0015] Further, it further comprises a first axial check ring, a second axial check ring, a third axial check ring and a fourth axial check ring, the first axial check ring and the second axial check ring are both connected to the first transmission shaft, the first axial check ring and the second axial check ring are respectively located on both sides of the first gear, and the third axial check ring and the fourth axial check ring are both connected to the second transmission shaft, the third axial check ring and the fourth axial check ring are respectively located on both sides of the fourth gear.

[0016] Further, the vibration energy conversion unit further comprises a first speed increaser, a first coupling, a second coupling, a second speed increaser, a third coupling and a fourth coupling, the input end of the first speed increaser is connected with the output shaft through the first coupling, the output end of the first speed increaser is connected with the first generator through the second coupling, the input end of the second speed increaser is connected with the output shaft through the third coupling, and the output end of the second speed increaser is connected with the second generator through the fourth coupling.

[0017] Further, the bottom plate, the first bearing seat, the second bearing seat, the third bearing seat, the fourth bearing seat, the fifth bearing seat and the sixth bearing seat are connected to the bottom plate, the output shaft is arranged on the fifth bearing seat and the sixth bearing seat, the first transmission shaft is connected to the first bearing seat and the second bearing seat, the second transmission shaft is connected to the third bearing seat and the fourth bearing seat, and the first generator, the second generator, the first speed increaser and the second speed increaser are connected to the bottom plate.

[0018] The vibration energy collection device for a track has at least the following beneficial effects:

[0019] The vibration energy collection device for a track, since the vibration energy input unit comprises a double-sided rack, the transmission unit comprises a double-sided rack downward moving transmission assembly and a double-sided rack upward moving transmission assembly, the double-sided rack can convert the vibration displacement of the vibration component into linear motion of the double-sided rack with very small error, and no matter the double-sided rack moves upward or downward, finally, it is converted into the single direction rotation motion of the output shaft, the mechanical efficiency of the vibration energy collection device for a track is improved, in addition, since the double-sided rack downward moving transmission assembly and the double-sided rack upward moving transmission assembly are symmetrically arranged relative to the double-sided rack, the whole device is uniformly stressed, can stably run and further improves the mechanical efficiency.

[0020] The vibration energy collection device for a track will be specifically described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a general installation view of the vibration energy collection device for a track.

[0022] Figure 2 It is an exploded view of the vibration energy collection device for a track.

[0023] Figure 3 It is a top view of the vibration energy collection device for a track. DETAILED DESCRIPTION

[0024] As shown in Figure 1 , Figure 2 , Figure 3 The vibration energy collection device for a track comprises a vibration energy input unit 01, a transmission unit 02 and a vibration energy conversion unit 03, the vibration energy input unit 01 comprises a double-sided rack 11, the double-sided rack 11 is used to be connected with a vibration component, the double-sided rack 11 is vertically arranged, when the vibration component vibrates, the double-sided rack 11 is driven to move up and down in the vertical direction, in the embodiment, the vibration component is a track,

[0025] The transmission unit 02 comprises a double-sided rack downward moving transmission assembly 21, a double-sided rack upward moving transmission assembly 22 and an output shaft 20, the double-sided rack downward moving transmission assembly 21 and the double-sided rack upward moving transmission assembly 22 are arranged on the two sides of the double-sided rack 11 respectively, the double-sided rack downward moving transmission assembly 21 and the double-sided rack upward moving transmission assembly 22 are symmetrically arranged relative to the double-sided rack 11, one end of the double-sided rack downward moving transmission assembly 21 is connected with the double-sided rack 11, and the other end is connected with the output shaft 20, one end of the double-sided rack upward moving transmission assembly 22 is connected with the double-sided rack 11, and the other end is connected with the output shaft 20, when the double-sided rack 11 moves downward, the double-sided rack downward moving transmission assembly 21 drives the output shaft 20 to rotate, and when the double-sided rack 11 moves upward, the double-sided rack upward moving transmission assembly 22 drives the output shaft 20 to rotate,

[0026] The vibration energy conversion unit 03 comprises a first generator 31 and a second generator 32, the first generator 31 and the second generator 32 are connected to the two ends of the output shaft 20 respectively, the output shaft 20 drives the first generator 31 and the second generator 32 to rotate, and the first generator 31 and the second generator 32 are DC generators or AC generators.

[0027] When the track vibrates, the double-sided rack 11 moves up and down, when the double-sided rack 11 moves upward, the double-sided rack upward moving transmission assembly 22 drives the output shaft 20 to rotate, the output shaft 20 drives the first generator 31 and the second generator 32 to work, and converts vibration energy into electric energy, and when the double-sided rack 11 moves downward, the double-sided rack downward moving transmission assembly 21 drives the output shaft 20 to rotate, the output shaft 20 drives the first generator 31 and the second generator 32 to work, and converts vibration energy into electric energy.

[0028] The vibration energy collection device for the track of the present application has the advantages that the vibration energy input unit 01 comprises the double-sided rack 11, the transmission unit 02 comprises the double-sided rack downward moving transmission assembly 21 and the double-sided rack upward moving transmission assembly 22, the double-sided rack 11 can convert the vibration displacement of the vibration part into linear motion of the double-sided rack 11 with very small error, and no matter the double-sided rack moves upward or downward, finally it is converted into single direction rotation motion of the output shaft 20, the mechanical efficiency of the vibration energy collection device for the track of the present application is improved, and in addition, the double-sided rack downward moving transmission assembly 21 and the double-sided rack upward moving transmission assembly 22 are symmetrically arranged relative to the double-sided rack 11, so that the whole device is uniformly stressed, can stably run and further improves the mechanical efficiency.

[0029] Optionally, the double-sided rack downward moving transmission assembly 21 comprises a first gear 211, a first one-way bearing 212, a first transmission shaft 213, a second gear 214, a third gear 215, the double-sided rack upward moving transmission assembly 22 comprises a fourth gear 221, a second one-way bearing 222, a second transmission shaft 223, a fifth gear 224, a sixth gear 225, in the embodiment, the first gear 211 and the fourth gear 221 are both straight tooth cylindrical gears, the second gear 214, the third gear 215, the fifth gear 224 and the sixth gear 225 are all straight tooth bevel gears, the first gear 211 is connected to the input end of the first transmission shaft 213 through the first one-way bearing 212, the second gear 214 is connected to the output end of the first transmission shaft 213, the third gear 215 is connected to one end of the output shaft 20, the second gear 214 is engaged with the third gear 215, the fourth gear 221 is connected to the input end of the second transmission shaft 223 through the second one-way bearing 222, the fifth gear 224 is connected to the output end of the second transmission shaft 223, the sixth gear 225 is connected to the other end of the output shaft 20, the fifth gear 224 and the sixth gear 225 are engaged with each other, the first gear 211 and the fourth gear 221 are located on both sides of the double-sided rack 11 respectively, the first gear 211 and the fourth gear 221 are engaged with the double-sided rack 11, the first transmission shaft 213 and the second transmission shaft 223 are both perpendicular to the output shaft 20, when the double-sided rack 11 moves downward, the first gear 211 drives the first transmission shaft 213 to rotate, the fourth gear 221 is disengaged from the second one-way bearing 222, when the double-sided rack 11 moves upward, the fourth gear 221 drives the second transmission shaft 223 to rotate, the first gear 211 is disengaged from the first one-way bearing 212. The first gear 211, the fourth gear 221, the second gear 214, the third gear 215, the fifth gear 224 and the sixth gear 225 can also adopt other forms of gears to achieve the above purpose by engagement. When the double-sided rack 11 moves downward, the first gear 211 rotates clockwise, the fourth gear 221 rotates counterclockwise, due to the arrangement of the first one-way bearing 212 and the second one-way bearing 222, at this time the first gear 211 transmits torque to the first transmission shaft 213 through the first one-way bearing 212, the fourth gear 221 is separated from the second one-way bearing 222 and does not transmit torque. The first transmission shaft 213 drives the second gear 214 to rotate clockwise, and in turn the third gear 215 drives the output shaft 20 to rotate counterclockwise; when the double-sided rack 11 moves upward, the first gear 211 rotates counterclockwise, the fourth gear 221 rotates clockwise, at this time the fourth gear 221 transmits torque to the second transmission shaft 223 through the second one-way bearing 222, the first gear 211 is separated from the first one-way bearing 212 and does not transmit torque.The second transmission shaft 223 drives the fifth gear 224 to rotate clockwise, the sixth gear 225 drives the output shaft 20 to rotate counterclockwise, when the double-sided rack 11 moves upward or downward, the output shaft 20 always rotates in one direction, that is, the bidirectional linear motion is converted into unidirectional rotary motion, and mechanical motion rectification is realized. The first one-way bearing 212 and the second one-way bearing 222 are installed in the same direction in the first gear 211 and the fourth gear 221, the third gear 215 and the sixth gear 225 are installed on the same side of the second gear 214 and the fifth gear 224, so that the output shaft 20 always rotates in one direction. The transmission assembly 21 is moved downward by the double-sided rack, and the transmission assembly 22 is moved upward by the double-sided rack, so as to convert the bidirectional vibration of the track of the vibration component into the unidirectional rotation of the output shaft, avoid the energy loss caused by the uncertain rotation direction of the output shaft, and improve the mechanical efficiency and electric energy output of the track vibration energy harvesting device.

[0030] Optionally, the vibration energy input unit 01 further comprises a first sliding rail 12, a second sliding rail 13, a first sliding block 14 and a second sliding block 15, the first sliding block 14 and the second sliding block 15 are fixed in position, the first sliding rail 12 and the second sliding rail 13 are both vertically arranged, the first sliding rail 12 and the second sliding rail 13 are respectively located on the two sides of the double-sided rack 11 and connected with the double-sided rack 11, the double-sided rack 11, the first sliding rail 12 and the second sliding rail 13 move up and down synchronously, the first sliding rail 12 slides up and down relative to the first sliding block 14, and the second sliding rail 13 slides up and down relative to the second sliding block 15. By arranging the first sliding rail 12, the second sliding rail 13, the first sliding block 14 and the second sliding block 15, it is ensured that the double-sided rack 11 only moves up and down in the vertical direction, so as to avoid deviation and further ensure accurate transmission and improve mechanical efficiency.

[0031] Optionally, the outer rings of the first one-way bearing 212 and the second one-way bearing 222 are respectively connected with a first flat key 51 and a second flat key 52, the first gear 211 and the fourth gear 221 are both provided with gear holes, the first one-way bearing 212 and the second one-way bearing 222 are respectively located in the gear holes of the first gear 211 and the fourth gear 221, the first one-way bearing 212 and the first gear 211 are connected through the first flat key 51, and the second one-way bearing 222 and the second gear 214 are connected through the second flat key 52. The flat keys are circumferentially fixed and transmit torque.

[0032] Optionally, the outer rings of the first one-way bearing 212 and the second one-way bearing 222 are respectively provided with a first key groove and a second key groove, and the first flat key 51 and the second flat key 52 are connected in the first key groove and the second key groove in a manner of interference fit, so as to ensure the tightness and stability of the connection between the first flat key 51, the second flat key 52, the first one-way bearing 212 and the second one-way bearing 222.

[0033] Optionally, the first transmission shaft 213 and the second transmission shaft 223 are respectively connected with the third flat key 53 and the fourth flat key 54, and the first transmission shaft 213 and the second transmission shaft 233 are connected to the inner rings of the first one-way bearing 212 and the second one-way bearing 222 through the third flat key 53 and the fourth flat key 54, and are fixed in the circumferential direction and transmit torque through the third flat key 53 and the fourth flat key 54.

[0034] Optionally, the first transmission shaft 213 and the second transmission shaft 223 are respectively provided with the third key groove and the fourth key groove, and the third flat key 53 and the fourth flat key 54 are connected in the third key groove and the fourth key groove through interference fit, so as to ensure the tightness and stability of the connection between the first transmission shaft 213 and the second transmission shaft 223 and the first one-way bearing 212 and the second one-way bearing 222.

[0035] Optionally, the first transmission shaft 213 and the second transmission shaft 223 are respectively provided with the third key groove and the fourth key groove, and the third flat key 53 and the fourth flat key 54 are connected in the third key groove and the fourth key groove through interference fit, so as to ensure the tightness and stability of the connection between the first transmission shaft 213 and the second transmission shaft 223 and the first one-way bearing 212 and the second one-way bearing 222.

[0036] Optionally, the vibration energy conversion unit 03 further includes a first speed increaser 33, a first coupling 34, a second coupling 35, a second speed increaser 36, a third coupling 37, and a fourth coupling 38. The input end of the first speed increaser 33 is connected to the output shaft 20 via the first coupling 34, and the output end of the first speed increaser 33 is connected to the first generator 31 via the second coupling 35. The input end of the second speed increaser 36 is connected to the output shaft 20 via the third coupling 37, and the output end of the second speed increaser 36 is connected to the second generator 32 via the fourth coupling 38. The arrangement of the first speed increaser 33 and the second speed increaser 36 accelerates the rotation speed of the first generator 31 and the second generator 32 while maintaining the speed of the output shaft 20, thereby increasing power output while avoiding unstable power generation. The first generator 31 and the second generator 32 can also directly use speed increase generators to achieve the above purpose. The first coupling 34 can also adopt a spring coupling to reduce transmission shock.

[0037] Optionally, the system further includes a base plate 61, a first bearing seat 71, a second bearing seat 72, a third bearing seat 73, a fourth bearing seat 74, a fifth bearing seat 75, and a sixth bearing seat 76 connected to the base plate 61, the two ends of the output shaft 20 being respectively arranged on the fifth bearing seat 75 and the sixth bearing seat 76, the two ends of the first transmission shaft 213 being respectively connected to the first bearing seat 71 and the second bearing seat 72, the two ends of the second transmission shaft 223 being respectively connected to the third bearing seat 73 and the fourth bearing seat 74, the first generator 31, the second generator 32, the first speed increaser 33, and the second speed increaser 36 being all connected to the base plate 61. By providing the base plate 61, the positions of the various components are fixed, and they can operate stably without offset during operation. In addition, the vibration energy harvesting device for rails of the present invention is portable and easy to install, and the device can be placed on two adjacent sleepers on the rails. Specifically, the first bearing seat 71, the second bearing seat 72, the third bearing seat 73, the fourth bearing seat 74, the fifth bearing seat 75, and the sixth bearing seat 76 are connected to the base plate 61 via the first bearing seat support 711, the second bearing seat support 721, the third bearing seat support 731, the fourth bearing seat support 741, the fifth bearing seat support 751, and the sixth bearing seat support 761, respectively. The first generator 31, the second generator 32, the first speed increaser 33, and the second speed increaser 36 are connected to the base plate 61 via the first generator support 311, the second generator support 321, the first speed increaser support 331, and the second speed increaser support 361, respectively. The base plate 61 is disposed below each support seat and is tightly connected to each support seat via bolts and nuts. The base plate 61 fits tightly against the bottom surface of each support seat, ensuring that the device can operate stably without shaking during operation.

[0038] The above-described embodiments are merely intended to describe the preferred embodiments of the present application, and are not intended to limit the scope of the present application. Various modifications and improvements to the present application made by those skilled in the art are intended to fall within the scope of the present application defined in the claims.

Claims

1. A vibration energy harvesting device for a track, characterized in that: it comprises a vibration energy input unit (01), a transmission unit (02), and a vibration energy conversion unit (03), the vibration energy input unit (01) comprises a double-sided rack (11) for connecting with a vibrating part, the double-sided rack (11) is vertically arranged, and the vibrating part drives the double-sided rack (11) to move up and down in the vertical direction when vibrating, the transmission unit (02) comprises a double-sided rack downward movement transmission assembly (21) and a double-sided rack upward movement transmission assembly (22), and an output shaft (20), the double-sided rack downward movement transmission assembly (21) and the double-sided rack upward movement transmission assembly (22) are respectively arranged on both sides of the double-sided rack (11), and are symmetrically arranged relative to the double-sided rack (11), one end of the double-sided rack downward movement transmission assembly (21) is connected with the double-sided rack (11), and the other end is connected with the output shaft (20), one end of the double-sided rack upward movement transmission assembly (22) is connected with the double-sided rack (11), and the other end is connected with the output shaft (20), when the double-sided rack (11) moves downward, the double-sided rack downward movement transmission assembly (21) drives the output shaft (20) to rotate, and when the double-sided rack (11) moves upward, the double-sided rack upward movement transmission assembly (22) drives the output shaft (20) to rotate, the vibration energy conversion unit (03) comprises a first generator (31) and a second generator (32), the first generator (31) and the second generator (32) are respectively connected to both ends of the output shaft (20), and the rotation of the output shaft (20) drives the first generator (31) and the second generator (32) to rotate.

2. The vibration energy harvesting device for a rail of claim 1, wherein: The double-sided rack downward moving transmission assembly (21) comprises a first gear (211), a first one-way bearing (212), a first transmission shaft (213), a second gear (214), a third gear (215), the double-sided rack upward moving transmission assembly (22) comprises a fourth gear (221), a second one-way bearing (222), a second transmission shaft (223), a fifth gear (224), a sixth gear (225), the first gear (211) and the fourth gear (221) are both straight tooth cylindrical gears, the second gear (214), the third gear (215), the fifth gear (224) and the sixth gear (225) are all straight tooth bevel gears, the first gear (211) is connected to the input end of the first transmission shaft (213) through the first one-way bearing (212), the second gear (214) is connected to the output end of the first transmission shaft (213), the third gear (215) is connected to one end of the output shaft (20), the second gear (214) is engaged with the third gear (215), the fourth gear (221) is connected to the input end of the second transmission shaft (223) through the second one-way bearing (222), the fifth gear (224) is connected to the output end of the second transmission shaft (223), the sixth gear (225) is connected to the other end of the output shaft (20), the fifth gear (224) is engaged with the sixth gear (225), the first gear (211) and the fourth gear (221) are located on the two sides of the double-sided rack (11) respectively, the first gear (211) and the fourth gear (221) are engaged with the double-sided rack (11), the first transmission shaft (213) and the second transmission shaft (223) are both perpendicular to the output shaft (20), when the double-sided rack (11) moves downward, the first gear (211) drives the first transmission shaft (213) to rotate, the fourth gear (221) is disengaged from the second one-way bearing (222), when the double-sided rack (11) moves upward, the fourth gear (221) drives the second transmission shaft (223) to rotate, the first gear (211) is disengaged from the first one-way bearing (212).

3. The vibration energy harvesting device for a rail of claim 1, wherein: The vibration energy input unit (01) further comprises a first sliding rail (12), a second sliding rail (13), a first sliding block (14) and a second sliding block (15), wherein the first sliding block (14) and the second sliding block (15) are fixed in position, the first sliding rail (12) and the second sliding rail (13) are both vertically arranged, the first sliding rail (12) and the second sliding rail (13) are respectively located on the two sides of the double-sided rack (11) and connected with the double-sided rack (11), the double-sided rack (11), the first sliding rail (12) and the second sliding rail (13) move synchronously up and down, the first sliding rail (12) moves up and down relative to the first sliding block (14), and the second sliding rail (13) moves up and down relative to the second sliding block (15).

4. The vibration energy harvesting device for a rail of claim 2, wherein: The outer rings of the first one-way bearing (212) and the second one-way bearing (222) are connected with a first flat key (51) and a second flat key (52), respectively, the first gear (211) and the fourth gear (221) are both provided with gear holes, the first one-way bearing (212) and the second one-way bearing (222) are respectively located in the gear holes of the first gear (211) and the fourth gear (221), the first one-way bearing (212) and the first gear (211) are connected through the first flat key (51), and the second one-way bearing (222) and the second gear (214) are connected through the second flat key (52).

5. The vibration energy harvesting device for a rail of claim 4, wherein: The outer rings of the first one-way bearing (212) and the second one-way bearing (222) are provided with a first key groove and a second key groove, respectively, and the first flat key (51) and the second flat key (52) are connected in the first key groove and the second key groove through interference fit, respectively.

6. The vibration energy harvesting device for a rail of claim 5, wherein: The first transmission shaft (213) and the second transmission shaft (223) are connected with a third flat key (53) and a fourth flat key (54), respectively, and the first transmission shaft (213) and the second transmission shaft (233) are connected to the inner rings of the first one-way bearing (212) and the second one-way bearing (222) through the third flat key (53) and the fourth flat key (54), respectively.

7. The vibration energy harvesting device for a rail of claim 6, wherein: The first transmission shaft (213) and the second transmission shaft (223) are provided with a third key groove and a fourth key groove, respectively, and the third flat key (53) and the fourth flat key (54) are connected in the third key groove and the fourth key groove through interference fit, respectively.

8. The vibration energy harvesting device for a rail of claim 7, wherein: Further comprising a first axial check ring (41), a second axial check ring (42), a third axial check ring (43), a fourth axial check ring (44), the first axial check ring (41) and the second axial check ring (42) are connected to the first transmission shaft (213), the first axial check ring (41) and the second axial check ring (42) are respectively located on both sides of the first gear (211), the third axial check ring (43) and the fourth axial check ring (44) are connected to the second transmission shaft (223), the third axial check ring (43) and the fourth axial check ring (44) are respectively located on both sides of the fourth gear (221).

9. The vibration energy harvesting device for a rail of claim 8, wherein: The vibration energy conversion unit (03) further comprises a first speed increaser (33), a first coupling (34), a second coupling (35), a second speed increaser (36), a third coupling (37), a fourth coupling (38), the input end of the first speed increaser (33) is connected to the output shaft (20) through the first coupling (34), the output end of the first speed increaser (33) is connected to the first generator (31) through the second coupling (35), the input end of the second speed increaser (36) is connected to the output shaft (20) through the third coupling (37), the output end of the second speed increaser (36) is connected to the second generator (32) through the fourth coupling (38).

10. The vibration energy harvesting device for a rail of claim 9, wherein: Further comprising a bottom plate (61), a first bearing seat (71), a second bearing seat (72), a third bearing seat (73), a fourth bearing seat (74), a fifth bearing seat (75), a sixth bearing seat (76) connected to the bottom plate (61), the output shaft (20) is arranged on the fifth bearing seat (75) and the sixth bearing seat (76) at both ends respectively, the first transmission shaft (213) is connected to the first bearing seat (71) and the second bearing seat (72) at both ends respectively, the second transmission shaft (223) is connected to the third bearing seat (73) and the fourth bearing seat (74) at both ends respectively, the first generator (31), the second generator (32), the first speed increaser (33) and the second speed increaser (36) are connected to the bottom plate (61).

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