Electromagnetic power generation device based on road vibration energy

Abstract

The utility model discloses an electromagnetic power generation device based on road vibration energy, which belongs to the technical field of energy recovery and reutilization, and comprises an energy input module which comprises a partition plate and a ball screw, a nut of the ball screw is fixedly connected with the partition plate, an elastic element is propped against the lower part of the partition plate along the axial direction of the ball screw, and an upper cover plate is buckled at the top of the partition plate; an energy conversion module; comprising a lower cylinder, a rotor is arranged in the center of the lower cylinder, a plurality of magnets are fixedly connected to the outer side of the rotor in the circumferential direction, and a plurality of coils are fixedly connected in the lower cylinder around the rotor; the motion transmission module comprises a middle barrel, and one end, away from the partition plate, of the elastic element is fixedly connected with the top surface of the middle barrel; a conversion transmission assembly is arranged in the middle barrel, converts irregular rotation of the ball screw into unidirectional rotation and transmits the unidirectional rotation to the rotor. Irregular vibration is converted into stable one-way rotation, the energy conversion efficiency is improved, and the reliability and durability of the device are enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of energy recovery and reuse technology, and in particular relates to an electromagnetic power generation device based on road vibration energy. Background Technology

[0002] In the field of intelligent transportation, the demand for microelectromechanical systems (MEMS) is increasing with the rapid development of Internet of Things (IoT) technology. These systems need to monitor dynamic parameters such as traffic flow and vehicle speed in real time. However, traditional power supply methods have many limitations, such as frequent battery replacements, difficulties in power supply in remote areas, and the significant weather-related impacts on wind and solar power. Therefore, how to efficiently and stably provide continuous power to MEMS has become a critical issue that urgently needs to be addressed.

[0003] In the prior art, there are already some devices that utilize road vibration energy. For example, patent CN110752782A proposes a device for collecting road vibration energy using a piezoelectric transducer, while patent CN111525838A discloses a cantilever beam vibration road energy harvesting device based on a piezoelectric stack. These devices convert vibration energy into electrical energy through the piezoelectric effect; however, piezoelectric materials themselves have drawbacks such as high brittleness and limited lifespan, restricting their long-term stable operation. Furthermore, existing devices also have shortcomings in energy conversion efficiency and structural stability, making it difficult to meet the needs of practical applications.

[0004] To address the aforementioned problems, this utility model proposes a novel electromagnetic power generation device based on road vibration energy. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model proposes an electromagnetic power generation device based on road vibration energy.

[0006] To achieve the above objectives, this utility model provides an electromagnetic power generation device based on road vibration energy, comprising:

[0007] An energy input module includes a partition and a ball screw. The nut of the ball screw is fixedly connected to the partition. An elastic element abuts against the partition along the axial direction of the ball screw. A top cover is fastened to the top of the partition.

[0008] An energy conversion module includes a lower cylinder, a rotor is disposed at the center of the lower cylinder, several magnets are fixedly connected to the outer circumference of the rotor, and several coils are fixedly connected to the rotor inside the lower cylinder.

[0009] The motion transmission module comprises a middle cylinder, and the elastic element is fixed to the top surface of the middle cylinder away from the partition plate; a conversion transmission assembly is arranged in the middle cylinder, and the conversion transmission assembly converts irregular rotation of the ball screw into unidirectional rotation and transmits the unidirectional rotation to the rotor.

[0010] According to the electromagnetic power generation device based on road vibration energy, the first bevel gear and the third bevel gear are oppositely arranged, and the first bevel gear and the third bevel gear are respectively connected in meshing transmission through the second bevel gear and the fourth bevel gear on the two sides.

[0011] The shaft center of the first bevel gear is connected in unidirectional transmission with the screw rod of the ball screw through a first one-way bearing; the top of the shaft center of the third bevel gear is connected in unidirectional transmission with the screw rod of the ball screw through a second one-way bearing, the bottom of the shaft center of the third bevel gear is connected in transmission with a connecting shaft, and the bottom end of the connecting shaft is connected in transmission with the rotor; the first one-way bearing and the second one-way bearing are opposite in direction.

[0012] According to the electromagnetic power generation device based on road vibration energy, the screw rod of the ball screw is connected in rotation with the top of the middle cylinder through a rolling bearing, the rolling bearing is arranged in a sunken hole in the top of the middle cylinder and is bolted to the top of the middle cylinder above the sunken hole to limit the radial position of the rolling bearing.

[0013] According to the electromagnetic power generation device based on road vibration energy, a limiting platform is arranged on the connecting shaft, a lower pressing plate is bolted to the bottom of the middle cylinder corresponding to the connecting shaft, and the lower pressing plate abuts against the limiting platform to limit the radial position of the connecting shaft.

[0014] According to the electromagnetic power generation device based on road vibration energy, the second bevel gear and the fourth bevel gear are both connected in rotation with bearing seats through bevel gear shafts, the bearing seats are fixed to support frames, and the support frames are fixed to the lower cylinder.

[0015] According to the electromagnetic power generation device based on road vibration energy, the connecting shaft is connected in transmission with the rotor through a third one-way bearing, and the third one-way bearing is the same in direction as the second one-way bearing.

[0016] The utility model provides a kind of electromagnetic generator based on road vibration energy, first bevel gear with first one-way bearing, the screw rod of first one-way bearing with ball screw, third bevel gear with second one-way bearing, the screw rod of second one-way bearing with ball screw, third bevel gear with connecting shaft, connecting shaft with third one-way bearing And third one-way bearing with rotor are connected by the way of key connection.

[0017] The utility model provides a kind of electromagnetic generator based on road vibration energy, two guide bars are slidably connected on the both sides of the partition parallel to the ball screw, two guide bar bottom with the middle part cylinder top surface is fixedly connected, guide bar with the partition slidably connected.

[0018] Compared with prior art, the utility model has the following advantages and technical effects:

[0019] 1, energy conversion efficiency improves: the bevel gear mechanism of spring and one-way bearing integration is used to convert vertical vibration into rotor one-way rotation, reduces energy loss;Compared with piezoelectric effect, the mechanical stress of electromagnetic induction power generation is smaller, and the relative motion of coil and magnet can stably and continuously cut the magnetic induction line, improve the power generation efficiency;Whether upper cover plate is pressed (stage I) or spring reset (stage II), rotor always rotates in one direction, realizes the bidirectional capture of vibration energy, and the energy conversion efficiency is higher.

[0020] 2, structural stability is enhanced: mature mechanical components such as ball screw are used to avoid the brittleness problem of piezoelectric material, prolong the service life of the device;One-way bearing reduces inertia loss and reverse idling, reduces mechanical wear;

[0021] 3, environmental adaptability breakthrough: it can adapt to-40 DEG C to 85 DEG C wide temperature range, compared with light energy and wind energy, it is not affected by weather, and it is suitable for remote area micro-electromechanical system self-power supply demand;

[0022] 4, modularity and expansibility: energy input, transmission and conversion modules are independently designed, easy to maintain and upgrade, and different vibration environments can be adapted by adjusting the stiffness of elastic element, gear ratio and other parameters. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings constituting a part of the present application are used to provide further understanding of the present application, and the illustrative embodiments of the present application and their description are used to explain the present application, and do not constitute undue limitation on the present application. In the drawings:

[0024] Figure 1 It is a kind of electromagnetic generator based on road vibration energy structure schematic view of the utility model;

[0025] Figure 2 It is energy input module structure schematic view in the utility model.

[0026] Figure 3 It is movement transmission module internal structure explosion map in the utility model;

[0027] Figure 4 It is movement transmission module internal structure explosion map in the utility model;

[0028] Figure 5 It is first bevel gear and ball screw connection schematic view in the utility model;

[0029] Figure 6 It is third bevel gear and ball screw connection schematic view in the utility model;

[0030] Figure 7 It is connecting rod and third bevel gear, connecting rod and rotor connection schematic view in the utility model;

[0031] Figure 8 It is energy conversion module structure schematic view in the utility model;

[0032] Figure 9 It is energy conversion module internal structure explosion map in the utility model;

[0033] Figure 10 It is electromagnetic power generation device working process schematic view based on road vibration energy in the utility model;

[0034] Figure 11 It is movement state schematic view of movement transmission module in stage I in the utility model;

[0035] Figure 12 It is movement state schematic view of movement transmission module in stage II in the utility model.

[0036] In the drawing: I, energy input module;II, movement transmission module;III, energy conversion module;

[0037] 1, upper cover plate;2, guide rod;3, partition;4, elastic element;5, ball screw;6, guide rod fixing frame;7, linear bearing;8, upper pressing plate;9, middle cylinder;10, bearing seat;11, lower pressing plate;12, connecting shaft;13, fourth bevel gear;14, first one-way bearing;15, rolling bearing;16, first bevel gear;17, second bevel gear;18, gear shaft;19, second one-way bearing;20, third bevel gear;21, third one-way bearing;22, support frame;23, lower cylinder;24, bottom plate;25, rotor;26, magnet;27, coil;28, first key connection structure;29, second key connection structure;30, third key connection structure;31, fourth key connection structure;32, fifth key connection structure;33, sixth key connection structure;34, seventh key connection structure. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0039] In order to make the above-mentioned purposes, features and advantages of the utility model more apparent, obvious and easy to understand, the utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0040] As Figure 1 shown, an electromagnetic power generation device based on road vibration energy is shown, which is mainly used for recycling vertical vibration energy, converting it into electric energy and effectively storing it, mainly including: energy input module I, motion transmission module II, energy conversion module III three parts. An electromagnetic power generation device based on road vibration energy can be installed below the speed bump, when the vehicle passes, the vibration energy generated in the up-down direction can capture the vibration energy through the energy input module I, and under the driving of the guide rod 2, it is converted into the rotary motion of the ball screw 5. At the same time, under the action of the conversion transmission assembly transmission of the motion transmission module II, the one-way rotation of the rotor 25 is realized; the energy conversion module III realizes the conversion of the rotary motion of the rotor 25 to electric energy through the relative motion between the magnet 26 and the coil 27. The device ingeniously utilizes the vibration energy which is not fully utilized in daily traffic, and realizes the sustainability and efficient use of energy through energy conversion technology.

[0041] As Figure 2As shown, the energy input module I includes: upper cover plate 1, guide rod 2, partition plate 3, elastic element 4, ball screw 5, guide rod fixing frame 6, linear bearing 7; the top end of the ball screw 5 is fixed in the stepped hole in the center of the partition plate 3 by bolts and nuts, and the elastic element 4 is arranged along the ball screw 5, one end of which is connected to the partition plate 3 and the other end is connected to the middle cylinder 9, thereby forming an elastic extension structure. In addition, in order to ensure the stability of the movement, the module is also equipped with two parallel guide rods 2, the lower end of the guide rod 2 is installed on the guide rod fixing frame 6, and the upper end is embedded in the linear bearing 7, the guide rod fixing frame 6 is fixed on the middle cylinder 9 by bolts, and the linear bearing 7 is also fixed on the partition plate 3 by bolts. When the upper cover plate 1 is excited by the external environment, the upper cover plate 1 will move downward along the guide rod 2, at this time the elastic element 4 will be compressed, and the ball screw 5 will rotate, in this process the elastic element 4 plays a role in vibration reduction; when the external excitation disappears and the upper cover plate 1 reaches its limit position, the upper cover plate 1 will return to the initial position under the action of the restoring force of the elastic element 4. In this reset process, the release of the elastic force not only drives the upper cover plate 1 to rise, but also drives the ball screw 5 to rotate in the opposite direction.

[0042] As shown in Figures 3-4 , the motion transmission module II includes: upper pressure plate 8, middle cylinder 9, bearing seat 10, lower pressure plate 11, connecting shaft 12, first bevel gear 16, second bevel gear 17, third bevel gear 20, fourth bevel gear 13, first one-way bearing 14, rolling bearing 15, bevel gear shaft 18, second one-way bearing 19, third one-way bearing 21; in terms of structure, two rolling bearings 15 are arranged in the stepped hole at the top end of the middle cylinder 9, and the radial movement of the bearings is limited by the bolt connection of the upper pressure plate 8 and the middle cylinder 9. Figure 5 As shown in Figure 6 , the second one-way bearing 19 is installed at the bottom of the ball screw 5 by the fourth key connection structure 31, and then installed inside the third bevel gear 20 by the third key connection structure 30. This design can convert the movement of the ball screw 5 into the rotary motion of the first bevel gear 16 and the third bevel gear 20. At the same time, as shown in Figure 7 , the third bevel gear 20 is also connected to the connecting shaft 12 through the fifth key connection structure 32, and then the lower pressure plate 11 is connected to the lower cylinder 23 by bolts to determine the radial position of the connecting shaft 12. The third one-way bearing 21 is connected to the connecting shaft 12 through the sixth key connection structure 33, and further connected to the rotor 25 through the seventh key connection structure 34.

[0043] As shown in Figures 8-9As shown, the energy conversion module III includes: a support frame 22, a lower cylinder 23, a base plate 24, a rotor 25, magnets 26, and coils 27. Structurally, the lower cylinder 23 and the base plate 24 are connected by bolts. Eight magnets 26 are evenly embedded on the outer surface of the rotor 25, and to increase the rate of change of magnetic flux, adjacent magnets are arranged in an alternating polarity. Eight coils are installed on the inner surface of the lower cylinder at the same center height as the rotor magnets. The rotor 25 is connected to the connecting shaft 12 via a third one-way bearing 21. When the connecting shaft 12 rotates, it drives the rotor 25 and its built-in magnets 26 to rotate. According to the principle of electromagnetic induction, during the rotation of the rotor 25, the coils 27 cut the magnetic field lines around the magnets 26, thereby generating an induced current in the coils 27.

[0044] like Figure 10 As shown, the operation of this device involves two states and two stages. In the initial state, i.e., state I, the device is static, and the elastic element 4 is in a pre-compressed state. When an external force is applied to the upper cover plate 1, the elastic element 4 is compressed, and the upper cover plate 1 moves downward along the two guide rods 2, driving the ball screw 5 to rotate. This process is called stage I. Limited by the maximum displacement of the upper cover plate 1 and the maximum deformation of the elastic element 4, the upper cover plate 1 can reach the limit position defined as state II. Subsequently, when the applied force is released, the elastic potential energy of the elastic element 4 is released, causing the upper cover plate 1 to move vertically upward, and the elastic element 4 returns to the pre-compressed state. This process is called stage II. The two stages illustrate the operation of the device.

[0045] like Figures 11-12 The diagram shown illustrates the working principle of the motion transmission module during operation. Figure 11 As shown, when the upper cover plate 1 moves downward in stage I, the ball screw 5 rotates clockwise (top view). Since the first bevel gear 16 and the third bevel gear 20 are respectively equipped with a first one-way bearing 14 and a second one-way bearing 19, and the first one-way bearing 14 and the second one-way bearing 19 rotate in opposite directions, at this time the first one-way bearing 14 rotates, the second one-way bearing 19 locks, and the second one-way bearing 19 drives the third bevel gear 20 to rotate clockwise as the driving gear (top view). Under the action of the key connection, the connecting shaft 12 and the rotor 25 connected to it also rotate clockwise with the third bevel gear 20 (top view); Figure 12As shown, in stage II, when the upper cover plate 1 moves upward after the external force is removed, the ball screw 5 rotates counterclockwise (from the top view), at this time, the second one-way bearing 19 rotates, the first one-way bearing 14 is locked, the first one-way bearing 14 drives the first bevel gear 16 to become a driving gear, rotates counterclockwise (from the top view), under the driving of the meshing of the second bevel gear 17 and the fourth bevel gear 13, the third bevel gear 20 rotates clockwise again (from the top view), therefore, the connecting shaft 12 and the rotor 25 connected therewith still keep rotating clockwise (from the top view). Through the above mechanism, no matter the ball screw 5 rotates clockwise or counterclockwise (from the top view), the rotor 25 always keeps rotating in the clockwise direction (from the top view).

[0046] The electromagnetic power generation device based on vibration energy has the advantages of high energy conversion efficiency, convenient installation, compact structure, wide application range and the like.

[0047] The non-exhaustive parts of the utility model are the conventional technical means known by the skilled in the art.

[0048] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown based on the drawings, and is only for the convenience of describing the utility model, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0049] The above-described embodiments are only preferred modes for describing the utility model, and do not limit the scope of the utility model, under the premise of not departing from the design spirit of the utility model, various deformations and improvements on the technical scheme of the utility model made by the skilled in the art should fall within the protection scope determined by the claims of the utility model.

Claims

1. A road vibration energy-based electromagnetic power generation device, characterized by, The utility model relates to a kind of energy conversion device, including: Energy input module (I), including partition (3) and ball screw (5), the nut of ball screw (5) is fixed with the partition (3), the partition (3) is below and is axially contacted with elastic element (4) along ball screw (5), upper cover plate (1) is buckled on the top of the partition (3); Energy conversion module (III);Including lower cylinder (23), the center of lower cylinder (23) is provided with rotor (25), the outer side of rotor (25) is circumferentially fixed with several magnets (26), and several coils (27) are fixed around rotor (25) in lower cylinder (23); Motion transmission module (II), including middle cylinder (9), the end of elastic element (4) away from the partition (3) is fixed with the top surface of middle cylinder (9);Conversion transmission assembly is arranged in the middle cylinder (9), and the conversion transmission assembly converts irregular rotation of ball screw (5) into unidirectional rotation and is transmitted to rotor (25).

2. The road vibration energy based electromagnetic power generation device according to claim 1, characterized by: The conversion transmission assembly includes first bevel gear (16), second bevel gear (17), third bevel gear (20) and fourth bevel gear (13);The first bevel gear (16) and the third bevel gear (20) are oppositely arranged, and the two sides of the first bevel gear (16) and the third bevel gear (20) are respectively connected by the second bevel gear (17) and the fourth bevel gear (13) Meshing transmission; The shaft (18) of the first bevel gear (16) is connected with the screw rod of ball screw (5) by first one-way bearing (14) unidirectional transmission;The top of the shaft center of the third bevel gear (20) is connected with the screw rod of ball screw (5) by second one-way bearing (19) unidirectional transmission, the bottom of the shaft center of the third bevel gear (20) is connected with connecting shaft (12), and the bottom end of connecting shaft (12) is connected with rotor (25) transmission;The first one-way bearing (14) and the second one-way bearing (19) are opposite in direction.

3. The road vibration energy based electromagnetic power generation device according to claim 1, wherein: The screw rod of ball screw (5) is rotatably connected with the top of middle cylinder (9) by rolling bearing (15), the rolling bearing (15) is arranged in the sunken hole on the top of middle cylinder (9), and the rolling bearing (15) is radially limited by being bolted on the sunken hole on the top of middle cylinder (9) by upper pressing plate (8).

4. The road vibration energy based electromagnetic power generation device according to claim 2, characterized by: Limiting platform is arranged on connecting shaft (12), and lower pressing plate (11) is bolted on the bottom of middle cylinder (9) corresponding to connecting shaft (12), and the radial position of connecting shaft (12) is limited by abutting between lower pressing plate (11) and limiting platform.

5. The road vibration energy based electromagnetic power generation device as claimed in claim 2, wherein: Second bevel gear (17) and fourth bevel gear (13) are rotatably connected with bearing seat (10) by bevel gear shaft (18), bearing seat (10) is fixed on support frame (22), and support frame (22) is fixed on lower cylinder (23).

6. The road vibration energy based electromagnetic power generation device according to claim 2, wherein: The connecting shaft (12) is in transmission connection with the rotor (25) through a third one-way bearing (21), and the third one-way bearing (21) is in the same direction as the second one-way bearing (19).

7. The road vibration energy based electromagnetic power generation device as claimed in claim 6, wherein: The first bevel gear (16) is connected with the first one-way bearing (14) in a key connection mode, the first one-way bearing (14) is connected with the screw rod of the ball screw (5) in a key connection mode, the third bevel gear (20) is connected with the second one-way bearing (19) in a key connection mode, the second one-way bearing (19) is connected with the screw rod of the ball screw (5) in a key connection mode, the third bevel gear (20) is connected with the connecting shaft (12) in a key connection mode, the connecting shaft (12) is connected with the third one-way bearing (21) in a key connection mode, and the third one-way bearing (21) is connected with the rotor (25) in a key connection mode.

8. The road vibration energy based electromagnetic power generation device according to claim 1, wherein: Two guide rods (2) are slidably connected to the both sides of the partition plate (3) in parallel with the ball screw (5), the bottom of the two guide rods (2) is fixedly connected with the top surface of the middle cylinder (9), and the guide rod (2) is slidably connected with the partition plate (3).

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