Vibration energy harvesting device and work platform

Abstract

The application relates to a vibration energy collecting device and a working platform, which comprises a shell, a power capturing mechanism arranged in the shell, the power capturing mechanism comprising a power capturing magnet capable of moving up and down, and a transducing mechanism arranged in the shell, the transducing mechanism comprising a transducing support, a transducing magnet arranged in the transducing support and a coil arranged outside the transducing support, when the power capturing magnet moves relative to the shell, the transducing magnet flips relative to the transducing support, and the angle difference between the extending direction of the flipping axis of the transducing magnet and the moving direction of the power capturing magnet is less than or equal to 45 degrees. The vibration energy collecting device has simple structure, and through the mutual attraction between the power capturing magnet and the transducing magnet and the reciprocating motion of the power capturing magnet, the high-frequency flipping of the transducing magnet is realized, so that the conversion from low-frequency wave excitation to high-frequency alternating current is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vibration energy collection, in particular to a vibration energy collection device and a working platform. BACKGROUND

[0002] Vibration energy is a kind of energy that exists universally in nature, and exists in different forms, intensities and frequencies in production and living occasions such as buildings, bridges, vehicles, large mechanical equipment, household appliances and the life activities of plants and animals. Compared with other environmental energy, true kinetic energy has obvious advantages in duration and energy output. At present, there are mainly two types of vibration energy collection: one is vibration energy collection in natural resources, which carries a vibration energy collector on a mechanical vibration platform to indirectly convert energy through the vibration of the platform; the other is applied to devices that generate vibration motion themselves, such as offshore observation platforms, vehicles and machine tools, which directly obtain energy from the vibration motion of the device through a vibration energy collector. Most of the direct energy acquisition methods, such as direct mechanical transmission, low-pressure hydraulic transmission, high-pressure hydraulic transmission and pneumatic transmission, have relatively large device volumes. In order to facilitate the collection of vibration energy, the indirect conversion method is more widely used in applications.

[0003] Indirect conversion of energy is usually achieved by integrating a vibration energy collection device into various mechanical working platforms, such as mining machines, large machine tools and ocean buoys. In the prior art, electromagnetic, piezoelectric or nanometer friction type is usually used for energy conversion. Among them, the electromagnetic vibration energy collector uses gear speed-up to realize the conversion of low-frequency environmental vibration to high-frequency rotation of the generator, but the gear speed-up is a contact transmission, so the energy loss is large during transmission, and the large transmission ratio also makes the volume of the entire device too large, resulting in low output power density. The piezoelectric vibration energy collector uses a cantilever beam structure with a mass block at the end, which is driven by the mass block to vibrate spontaneously under the action of low-frequency vibration excitation and inertia, so that the cantilever beam of the piezoelectric material produces positive and negative deflection changes to realize energy output. However, the natural frequency of the cantilever beam is relatively high, and the degree of fit with the environmental vibration frequency is low, so a corresponding frequency-raising mechanism is needed at the front end, which has certain limitations in application. The nanometer friction type vibration energy collector realizes electric energy output through the mutual contact and separation of the surfaces of two materials, but it is affected by the low vibration frequency and complex vibration waveform in the environment, and the motion frequency of the contact and separation of the two materials is low, and the friction between the materials easily shortens the service life of the entire device. SUMMARY

[0004] To this end, the technical problem to be solved by the present application is to overcome the technical problem in the prior art that electromagnetic vibration energy collectors generally use gear speed-up to realize the conversion of low-frequency environmental vibration into high-frequency rotation of the generator, but the gear speed-up is a contact transmission, energy loss is large, and a large transmission ratio also increases the size of the device, resulting in low output power density. The piezoelectric vibration energy collector generally uses a cantilever beam structure with a mass block at the end to realize energy collection, but the cantilever beam has a high natural frequency and a low degree of fit with the environmental vibration frequency, poor environmental adaptability, and low output power in a low-frequency environment. The nanometer friction type vibration energy collector realizes electric energy output through the mutual contact and separation of the surfaces of two materials. However, the contact and separation frequency of the materials is low due to the influence of low-frequency environmental vibration, and the friction of the materials shortens the service life of the energy collector.

[0005] To solve the above technical problems, the present application provides a vibration energy collection device, comprising:

[0006] a shell;

[0007] a power trapping mechanism arranged in the shell, the power trapping mechanism comprising a power trapping magnet capable of moving relative to the shell;

[0008] a transduction mechanism arranged in the shell, the transduction mechanism comprising a transduction support, a transduction magnet arranged in the transduction support, and a coil wound outside the transduction support, when the power trapping magnet moves relative to the shell, the transduction magnet flips relative to the transduction support, and the angle difference between the extension direction of the flip axis of the transduction magnet and the movement direction of the power trapping magnet is ≤45°.

[0009] In an embodiment of the present application, the transduction mechanism further comprises a flip support, the flip support has a transduction slot accommodating the transduction magnet, and the flip support is provided with a flip shaft, both ends of the flip shaft are connected to the transduction support.

[0010] In an embodiment of the present application, the flip shaft comprises flip shafts arranged on both sides of the flip support, and the shaft centers of the flip shafts on both sides correspond.

[0011] In an embodiment of the present application, the transduction slots are located at both ends of the flip support, a support part is arranged between the transduction slots at both ends, the flip shaft passes through the support part and is connected to the flip support, and the transduction magnets in the transduction slots at both ends are mutually adsorbed.

[0012] In an embodiment of the present application, the shell is provided with an adjusting slot for inserting the transduction support, and the distance of the transduction support relative to the power trapping magnet is adjusted through the adjusting slot.

[0013] In one embodiment of the present application, the energy trapping mechanism further comprises a guide rod and a mass block, the energy trapping magnet is arranged on the mass block, the mass block has a through slot for the guide rod to pass through, and the mass block drives the energy trapping magnet to move up and down along the guide rod.

[0014] In one embodiment of the present application, both ends of the guide rod are connected to the shell, both ends of the guide rod are provided with elastic members, one end of each elastic member abuts against the shell, and the other end abuts against the mass block.

[0015] In one embodiment of the present application, the energy trapping mechanism further comprises a magnet support arranged on the mass block to limit the movement of the energy trapping magnet.

[0016] In one embodiment of the present application, the transducing mechanism comprises a plurality of, and the side edge of the mass block has a through slot for the transducing mechanism to pass through.

[0017] The present application also provides a working platform, which comprises the above-mentioned vibration energy harvesting device.

[0018] The above technical solutions of the present application have the following advantages compared with the prior art:

[0019] The vibration energy harvesting device has the advantages of simple structure, high-frequency flipping of the transducing magnet through mutual attraction between the energy trapping magnet and the transducing magnet and reciprocating movement of the energy trapping magnet, and conversion of low-frequency wave excitation into high-frequency alternating current. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the content of the present application more easily understood, the present application will be further described in detail below according to specific embodiments of the present application and in conjunction with the drawings, in which

[0021] Figure 1 is a schematic diagram of the overall structure of the vibration energy harvesting device in the present application.

[0022] Figure 2 is a schematic diagram of the overall structure of the vibration energy harvesting device in the present application. Figure 1

[0023] Figure 3 is a schematic diagram of the overall structure of the vibration energy harvesting device in the present application. Figure 1

[0024] Figure 4 is a schematic diagram of the overall structure of the vibration energy harvesting device in the present application. Figure 1

[0025] Figure 5 is a schematic diagram of the overall structure of the vibration energy harvesting device in the present application. Figure 1 ​​​Partial structural schematic diagram of the vibration energy collection device.

[0026] Figure 6 is as shown in Figure 1 Partial structural schematic diagram of the vibration energy collection device.

[0027] Figure 7 is as shown in Figure 1 Partial structural schematic diagram of the vibration energy collection device.

[0028] Figure 8 is as shown in Figure 1 Partial structural schematic diagram of the vibration energy collection device.

[0029] Figure 9 is as shown in Figure 1 Partial structural schematic diagram of the vibration energy collection device.

[0030] Description of the drawings: 1, housing; 101, frame; 102, middle frame; 103, adjusting groove; 2, energy trapping mechanism; 201, energy trapping magnet; 202, guide rod; 203, mass block; 204, elastic member; 205, magnet support; 3, transduction mechanism; 301, transduction support; 302, transduction magnet; 303, coil; 304, turnover support; 305, transduction groove; 306, turnover shaft; 307, support part; 308, adjusting hole. DETAILED DESCRIPTION

[0031] The present application will be further described below in conjunction with the drawings and specific examples, so that those skilled in the art can better understand the present application and implement it, but the examples are not intended to limit the present application.

[0032] Example 1

[0033] Referring to Figures 1-9As shown, the vibration energy collection device of the present application comprises: a shell 1; a power capturing mechanism 2 arranged in the shell 1, the power capturing mechanism 2 comprising a power capturing magnet 201 capable of moving relative to the shell 1; a transducing mechanism 3 arranged in the shell 1, the transducing mechanism 3 comprising a transducing support 301, a transducing magnet 302 arranged in the transducing support 301 and a coil 303 wound outside the transducing support 301, when the power capturing magnet 201 moves relative to the shell 1, the transducing magnet 302 flips relative to the transducing support 301, and the angle difference between the extending direction of the flipping axis 306 of the transducing magnet 302 and the moving direction of the power capturing magnet 201 is ≤45°. Wherein, the power capturing magnet 201 generates movement through the vibration of an external device, in the embodiment, it is defined as moving up and down along the shell 1, the transducing magnet 302 is perpendicular to the power capturing magnet 201, that is, when the power capturing magnet 201 is located in the middle of the transducing magnet 302 in the horizontal position, the transducing magnet 302 and the power capturing magnet 201 will not generate mutual adsorption or repulsion phenomenon. In the embodiment, the initial position of the power capturing magnet 201 is located in the middle of the transducing magnet 302 in the horizontal direction, and the upper part of the power capturing magnet 201 is defined as N pole and the lower part is defined as S pole at the initial time, the power capturing magnet 201 receives the vibration of the external device to generate movement up and down along the shell 1, when moving to the upper part of the transducing magnet 302, the N pole of the transducing magnet 302 faces the power capturing magnet 201, when the power capturing magnet 201 returns to the middle of the transducing magnet 302 in the horizontal direction and moves to the lower part of the transducing magnet 302, the transducing magnet 302 generates flipping to make its S pole face the power capturing magnet 201, and as the power capturing magnet 201 continues to move to the lower part of the transducing magnet 302, the transducing magnet 302 generates back and forth flipping of a certain angle, the power capturing magnet 201 is affected by inertia, when it needs to change direction to move to the upper part of the transducing magnet 302 again, its speed decreases and it stays in the lower part for a short time, the transducing magnet 302 always receives the attractive force of the power capturing magnet 201, because the transducing magnet 302 itself is in the flipping state, it generates high-frequency reciprocating flipping movement, the coil 303 outside the transducing support 301 cuts the magnetic induction lines of the transducing magnet 302 to generate electric energy, thereby realizing the conversion from low-frequency wave excitation to high-frequency alternating current. The vibration energy collection device of the present application has simple structure, realizes the high-frequency flipping of the transducing magnet 302 through the mutual attraction of the power capturing magnet 201 and the transducing magnet 302 and the reciprocating movement of the power capturing magnet 201, thereby realizing the conversion from low-frequency wave excitation to high-frequency alternating current.

[0034] It should be noted that in the embodiment, the trapping magnet 201 is composed of multiple cylindrical magnet pieces with positive and negative poles adsorbed, and the number of magnet pieces can be adjusted according to the size of driving force and external excitation, so that the trapping mechanism 2 reaches the lowest excitation condition of linear motion. The transduction magnet 302 is also composed of multiple cylindrical magnet pieces with positive and negative poles adsorbed, and the efficiency of frequency conversion can be changed by changing the number. In the embodiment, preferably, the extension direction of the flipping shaft 306 of the transduction magnet 302 is the same as the movement direction of the trapping magnet 201, so that better frequency conversion efficiency is obtained.

[0035] Specifically, in the embodiment, the transduction mechanism 3 further comprises a flipping bracket 304, the transduction bracket 301 has a receiving groove, the flipping bracket 304 is arranged in the receiving groove of the transduction bracket 301, the flipping bracket 304 has a transduction groove 305 for accommodating the transduction magnet 302, the flipping bracket 304 is provided with a flipping shaft 306, both ends of the flipping shaft 306 are connected to the transduction bracket 301, more specifically, both ends of the flipping shaft 306 are provided with bearings, and the bearings are pre-set on the transduction bracket 301, the flipping shaft 306 moves relative to the transduction bracket 301 through the bearings, the cross section of the flipping bracket 304 is adapted to the shape of the transduction magnet 302, and in the embodiment, the cross section of the flipping bracket 304 is circular. The flipping shaft 306 comprises flipping shafts arranged on both sides of the flipping bracket 304, the shaft centers of the flipping shafts on both sides correspond, and the transduction groove 305 is a through groove, so that more transduction magnets 302 can be accommodated. This arrangement is affected by the machining precision and cannot guarantee the consistency of the outer diameter of the transduction magnet 302 and the inner diameter of the flipping bracket 304, which may cause movement along the through direction of the transduction groove 305. Therefore, in the embodiment, the transduction grooves 305 are located at both ends of the flipping bracket 304, and a support part 307 is arranged between the transduction grooves 305 at both ends, the flipping shaft 306 is connected to the flipping bracket 304 through the support part 307. On the one hand, the flipping shaft 306 adopts a long shaft instead of a short shaft of the flipping shaft, which can ensure that the shaft centers of the flipping shaft 306 are the same, thereby improving the accuracy when the transduction magnet 302 drives the flipping bracket 304 to flip. On the other hand, the transduction magnets 302 in the transduction grooves 305 at both ends can be adsorbed to each other, avoiding axial movement. In the embodiment, the flipping bracket 304 is located on the side of the transduction bracket 301 close to the trapping magnet 201.

[0036] Specifically, in the embodiment, the shell 1 comprises a side frame 101 and a middle frame 102, the side frame 101 is arranged at the upper and lower ends of the middle frame 102, and the cross sections of the side frame 101 and the middle frame 102 are both circular to reduce the volume of the entire device. The middle frame 102 has a containing space, the energy trapping mechanism 2 is arranged in the containing space of the middle frame 102, and one side of the side frame 101 towards the middle frame 102 has a boss to achieve initial positioning of the connection between the side frame 101 and the middle frame 102 through the boss. The side surface in the middle frame 102 is provided with an adjusting groove 103 for inserting the transduction support 301, the transduction support 301 adjusts the distance relative to the energy trapping magnet 201 through the adjusting groove 103, so as to adjust the natural frequency close to or the same as the vibration frequency. The cross section of the transduction support 301 is also circular, the inner diameter of the adjusting groove 103 is matched with the outer diameter of the transduction support 301, and a plurality of adjusting holes 308 are arranged on the side of the transduction support 301 close to the adjusting groove 103. The connection between the transduction support 301 and the middle frame 102 is realized through the adjusting holes 308 by bolts and nuts. Preferably, in the embodiment, in order to facilitate installation, the middle frame 102 has an installation groove, the installation groove penetrates from the upper side of the middle frame 102 to the lower side of the middle frame 102 and passes through the adjusting groove 103, so that the bolt can pass in from the upper side of the middle frame 102, pass through the adjusting groove 103 and the adjusting hole 308, and then pass out from the lower side of the middle frame 102.

[0037] Specifically, in the embodiment, the energy trapping mechanism 2 further comprises a guide rod 202 and a mass block 203, the energy trapping magnet 201 is arranged on the mass block 203, the mass block 203 has a through slot for the guide rod 202 to pass through, and the mass block 203 drives the energy trapping magnet 201 to move up and down along the guide rod 202, wherein the mass block 203 and the guide rod 202 guide the energy trapping magnet 201 to reciprocate along a predetermined path. The guide rod 202 has a sliding bearing, and the mass block 203 is connected to the guide rod 202 through the sliding bearing to drive the energy trapping magnet 201 to move along the guide rod 202. More specifically, in the embodiment, the two ends of the guide rod 202 are connected to the side frame 101 at the upper and lower ends of the middle frame 102, and the two ends of the guide rod 202 are provided with elastic members 204, one end of each elastic member 204 abuts against the side frame 101, and the other end abuts against the mass block 203. Through the elastic members 204, on the one hand, the movement of the energy trapping magnet 201 can be buffered to a certain extent, and on the other hand, the elastic members 204 can be compressed to store energy to assist excitation. In the embodiment, the elastic members 204 can be springs. Preferably, in the embodiment, the mass block 203 comprises two mass blocks arranged on the upper and lower sides of the energy trapping magnet 201, and in the embodiment, the mass block 203 can be a copper block. More specifically, the energy trapping mechanism 2 further comprises a magnet support 205 arranged on the mass block 203 to limit the movement of the energy trapping magnet 201, the magnet support 205 can be a hollow support penetrating through the upper and lower sides, and the cross section thereof is circular to correspond to the energy trapping magnet 201, the energy trapping magnet 201 is arranged in the magnet support 205, and the upper and lower sides of the magnet support 205 are connected to the mass blocks 203 on the upper and lower sides of the energy trapping magnet 201, thereby better limiting the movement of the energy trapping magnet 201 relative to the mass blocks 203. Preferably, in the embodiment, the guide rod 202 can comprise a plurality of guide rods arranged along the center of the mass block 203 to improve the accuracy of the movement path of the mass block 203. Preferably, the transduction mechanism 3 comprises a plurality of transduction mechanisms, and the side of the mass block 203 has a through slot for the transduction mechanism 3 to pass through, that is, the mass block 203 can have a cross-shaped structure to avoid interference between the energy trapping magnet 201 and the mass block 203 when moving up and down.

[0038] Embodiment Two

[0039] The embodiment also provides a working platform comprising the vibration energy harvesting device of the first embodiment.

[0040] Obviously, the above embodiments are merely example for clearly illustrating, and are not limitation to the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and can not be exhausted. The obvious changes or variations derived therefrom are still within the scope of the present invention.

Claims

1. A vibration energy harvesting device, characterized in that: include: case; An energy harvesting mechanism is disposed within the housing, the energy harvesting mechanism including an energy harvesting magnet, the energy harvesting magnet being movable relative to the housing; A transducer mechanism is disposed within the housing. The transducer mechanism includes a transducer support, a transducer magnet disposed within the transducer support, and a coil wound around the transducer support. When the energy-capturing magnet moves relative to the housing, the transducer magnet flips relative to the transducer support. The angle difference between the extension direction of the flipping axis of the transducer magnet and the movement direction of the energy-capturing magnet is ≤45°. The energy harvesting mechanism also includes a guide rod and a mass block. The energy harvesting magnet is disposed on the mass block, and the mass block has a through slot for the guide rod to pass through. The mass block drives the energy harvesting magnet to move up and down along the guide rod. Both ends of the guide rod are connected to the housing, and both ends of the guide rod are provided with elastic elements. One end of each elastic element abuts against the housing, and the other end abuts against the mass block.

2. The vibration energy harvesting device according to claim 1, characterized in that: The transducer mechanism further includes a flipping bracket, which has a transducer slot for accommodating the transducer magnet and a flipping shaft, the two ends of which are connected to the transducer bracket.

3. The vibration energy harvesting device according to claim 2, characterized in that: The flipping shaft includes flipping support shafts disposed on both sides of the flipping bracket, and the axes of the flipping support shafts on both sides correspond to each other.

4. The vibration energy harvesting device according to claim 2, characterized in that: The transducer slots are located at both ends of the flipping bracket, and a support is provided between the transducer slots at both ends. The flipping shaft passes through the support and is connected to the flipping bracket. The transducer magnets in the transducer slots at both ends attract each other.

5. The vibration energy harvesting device according to claim 1, characterized in that: The housing is provided with an adjustment slot for inserting the transducer bracket, and the distance between the transducer bracket and the energy-capturing magnet is adjusted by the adjustment slot.

6. The vibration energy harvesting device according to claim 1, characterized in that: The energy harvesting mechanism also includes a magnet support, which is disposed on the mass block to restrict the movement of the energy harvesting magnet.

7. A vibration energy harvesting device according to claim 6, characterized in that: The transducer mechanism includes multiple components, and the side of the mass block has a bypass groove for the transducer mechanism to pass through.

8. A working platform, characterized in that: Includes the vibration energy harvesting device according to any one of claims 1-7.

Images