A device based on vibration power generation by speed bumps

Abstract

The present invention discloses a device for generating electricity based on the vibration of a speed bump, which includes a housing, a pressing module, a transmission module, and N power generation modules. In the present invention, the change of the motion form is realized through a gear rack, the flywheel stores energy instantaneously and then releases it slowly. The one-way bearing ensures that all transmissions are in the same direction, and the gear set amplifies the energy and ensures that the energy output each time is equal. The present invention has the advantages of high power density, good motion stability, convenient installation, low carbon and environmental protection, etc., and can be applied to the field of intelligent power generation in intelligent transportation.

Description

Technical Field

[0001] The present invention relates to the field of vibration power generation, and particularly to a device for generating electricity based on the vibration of a speed bump. Background Art

[0002] With the rapid progress of technology, the rapid consumption of limited energy is an urgent problem to be solved. The possibility of solving this problem by reducing energy supply is extremely small. Only by effectively utilizing and recycling energy can the pressure of energy shortage be alleviated. To ensure driving safety and reduce the accident rate caused by excessive vehicle speed, speed bumps are widely used in some occasions (Liu Zhiqiang, Wang Zhaohua, Qian Weidong. Analysis of traffic accidents based on speed [J]. China Safety Science Journal). However, although speed bumps play a role in forcing vehicles to slow down to a certain extent, a lot of energy is wasted due to vibration when vehicles pass over speed bumps (Kong Fanguo, Wu Guanlin. Theoretical research on electromagnetic road speed bump power generation device [J]. Machinery Design & Manufacture). If this vibration energy can be recovered and reused, it has very important practical significance for energy conservation, emission reduction and green transportation.

[0003] At present, scholars at home and abroad have noticed the great significance of energy conservation of speed bumps and have conducted a lot of research on speed bump energy conservation technology. The existing energy storage methods for speed bumps on the road surface mainly include mechanical, electromagnetic, hydraulic and piezoelectric (Xu Yang. Design and application of speed bump vibration energy recovery system [D]. Jiangsu University) four types. The design of electromagnetic motors and the difficulty of electrical energy storage are large, hydraulic systems are prone to leakage, the conversion efficiency of piezoelectric systems is low, and although mechanical systems have a lower cost, the speed fluctuation is large, and there has always been a problem of unstable power generation. These deficiencies have restricted the utilization and popularization of speed bump power generation devices. In the research of existing mainstream speed bump vibration energy collection devices, due to the problem of unstable power generation in mechanical systems, there is a lack of research on the stable collection of energy from mechanical energy storage speed bumps in China. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a device for generating electricity based on the vibration of a speed bump in view of the defects involved in the background art.

[0005] The present invention adopts the following technical solutions to solve the above technical problems:

[0006] A device for generating electricity based on the vibration of a speed bump, comprising a housing, a pressing module, a transmission module, and N power generation modules, where N is a natural number greater than or equal to 1;

[0007] The upper end of the housing is open and hollow;

[0008] The pressing module includes a pressing plate, first to fourth support columns, first to fourth return springs, a first rack, a first transmission shaft, a first gear, a first one-way bearing, a first flywheel, and a second gear;

[0009] The housing is provided with first to fourth vertical blind holes corresponding to the first to fourth support columns one by one; the first to fourth return springs are arranged in the first to fourth vertical blind holes one by one; the upper ends of the first to fourth support columns are perpendicularly and fixedly connected to the lower end surface of the pressing plate, and the lower ends extend into the first to fourth vertical blind holes one by one and abut against the return springs therein;

[0010] The upper end of the first rack is perpendicularly and fixedly connected to the lower end surface of the pressing plate, and the lower end extends into the housing;

[0011] The first transmission shaft is arranged in the housing perpendicular to the first rack, and both ends thereof are connected to the inner wall of the housing through bearings and can rotate freely relative to the housing;

[0012] The first flywheel, the inner ring of the first one-way bearing, and the second gear are sequentially arranged on the first transmission shaft and are all coaxially and fixedly connected to the first transmission shaft;

[0013] The first gear is a hollow gear, sleeved outside the first transmission shaft, coaxially and fixedly connected to the outer ring of the first one-way bearing, and the first gear meshes with the first rack, so that when the pressing plate is pressed down, the first rack drives the first gear and then drives the first transmission shaft to rotate through the first one-way bearing, and when the pressing plate is lifted, the first rack drives the first one-way bearing to idle through the first gear and the first transmission shaft does not rotate;

[0014] The transmission module includes a second transmission shaft, a third gear, and a fourth gear;

[0015] The second transmission shaft is arranged in the housing parallel to the first transmission shaft, and both ends thereof are connected to the inner wall of the housing through bearings and can rotate freely relative to the housing;

[0016] The third gear and the fourth gear are both arranged on the second transmission shaft and are coaxially and fixedly connected to the second transmission shaft;

[0017] The third gear meshes with the second gear;

[0018] A partition is provided in the housing;

[0019] The power generation module includes a fifth gear, a third transmission shaft, a driving rotor, a driven rotor, a crank connecting rod, an energy storage unit, a second rack, a sixth gear, a second one-way bearing, a motor, and a second flywheel;

[0020] The partition is provided with mounting holes for mounting the third transmission shaft; the third transmission shaft is arranged parallel to the second transmission shaft in the housing, one end is connected to the inner wall of the housing through a bearing, and the other end passes through the mounting hole of the partition and is connected to the mounting hole of the partition through a bearing, and can rotate freely relative to the housing;

[0021] The fifth gear is arranged on the third transmission shaft, coaxially and fixedly connected to the third transmission shaft, and the fifth gear meshes with the fourth gear;

[0022] The driving rotor is in a disc shape, coaxially and fixedly connected to the end of the third rotating shaft passing through the partition, and the outer wall thereof is provided with first protrusions for driving the driven rotor to rotate;

[0023] The driven rotor is in an annular shape, arranged between the driving rotor and the partition, the inner wall thereof is connected to the third transmission shaft through a bearing, and can rotate freely relative to the third transmission shaft; the outer wall of the driven rotor is provided with second protrusions, and one side of the second protrusion facing the driving rotor is perpendicularly and fixedly connected with a hinge column and a transmission column; the hinge column is used for cooperating with the first protrusion when the driving rotor rotates so that the driven rotor rotates accordingly; the transmission column is located outside the first protrusion, and one end of the transmission column away from the second protrusion is perpendicularly and rotatably connected to one end of the crank connecting rod;

[0024] The energy storage unit includes an impact rod, an energy storage spring, a first fixing ring, a second fixing ring, a first fixing rod, a second fixing rod and a retaining ring. Among them, the first fixing rod and the second fixing rod are arranged in parallel, one end of each of them is perpendicularly and fixedly connected to the first fixing ring, and the other end is perpendicularly and fixedly connected to the second fixing ring; the first fixing rod is fixedly connected to the partition; one end of the impact rod is hinged to the end of the crank connecting rod away from the transmission column, and the other end sequentially passes through the first fixing ring, the retaining ring and the second fixing ring. The impact rod is in clearance fit with the first fixing ring and the second fixing ring, and the impact rod is perpendicularly and fixedly connected to the retaining ring; the energy storage spring is sleeved on the impact rod, one end abuts against the first fixing ring, and the other end abuts against the retaining ring;

[0025] The second rack is coaxially and fixedly connected to the end of the impact rod away from the crank connecting rod;

[0026] The motor is fixed on the partition;

[0027] The inner ring of the second one-way bearing and the second flywheel are both arranged on the input shaft of the motor and coaxially and fixedly connected to the input shaft of the motor;

[0028] The sixth gear is a hollow gear, sleeved outside the input shaft of the motor, coaxially and fixedly connected to the outer ring of the second one-way bearing, and the sixth gear meshes with the second rack. When the impact rod pops outwards under the action of the energy storage spring, the second rack drives the sixth gear to rotate, and then drives the input shaft of the motor to rotate through the second one-way bearing for power generation; when the impact rod is pulled inwards to contract, the second rack drives the second one-way bearing to idle through the sixth gear.

[0029] As a further optimized solution of the device for generating electricity based on the vibration of speed bumps in the present invention, N is taken as 2.

[0030] Compared with the prior art, the present invention adopts the above technical solutions and has the following technical effects:

[0031] The present invention utilizes the kinetic energy compensation mechanism of the double flywheel and the one-way ratchet to generate electricity stably, and solves the unevenness in quantity of traditional mechanical power generation through the energy storage unit. Moreover, the present invention is an independent unit, which can meet the rapid assembly of each section of the road. Without increasing the energy consumption of the vehicle, the secondary effective utilization of energy is realized, and it has the advantages of high power density, good motion stability, convenient installation, low carbon and environmental protection, etc., and can be applied to the field of intelligent power generation in intelligent transportation. Description of the Drawings

[0032] Figure 1 is the external view of the device of the present invention;

[0033] Figure 2 is the top view of the structure of the present invention;

[0034] Figure 3 is the structure diagram without the wall surface of the present invention;

[0035] Figure 4 is the structure diagram of the energy storage crank-slider of the present invention;

[0036] Figure 5 is the schematic diagram of the device of the present invention.

[0037] In the figure, 1 - housing, 2 - pressing plate, 3 - first support column, 4 - first rack, 5 - partition plate, 6 - first transmission shaft, 7 - first gear, 8 - first one-way bearing, 9 - first flywheel, 10 - second gear, 11 - second transmission shaft, 12 - third gear, 13 - fourth gear, 14 - third transmission shaft, 15 - fifth gear, 16 - motor, 17 - sixth gear, 18 - second rack, 19 - second flywheel, 20 - active rotor, 21 - driven rotor, 22 - second protrusion of the driven rotor, 23 - transmission column, 24 - hinged column, 25 - crank connecting rod, 26 - first fixing ring, 27 - second fixing ring, 28 - retaining ring, 29 - first fixing rod, 30 - second fixing rod, 31 - energy storage spring, 32 - impact rod. Detailed Embodiments

[0038] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings:

[0039] The present invention can be implemented in many different forms and should not be considered limited to the embodiments described herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. In the drawings, components are enlarged for clarity.

[0040] As Figure 1 shown, the present invention discloses a device based on vibration power generation of a speed bump, including a housing, a pressing module, a transmission module, and N power generation modules, where N is a natural number greater than or equal to 1;

[0041] The upper end of the housing is open and hollow;

[0042] As Figure 2 、 Figure 3 shown, the pressing module includes a pressing plate, first to fourth support columns, first to fourth return springs, a first rack, a first transmission shaft, a first gear, a first one-way bearing, a first flywheel, and a second gear;

[0043] The housing is provided with first to fourth vertical blind holes corresponding to the first to fourth support columns one by one; the first to fourth return springs are correspondingly arranged in the first to fourth vertical blind holes; the upper ends of the first to fourth support columns are perpendicularly and fixedly connected to the lower end surface of the pressing plate, and the lower ends correspondingly extend into the first to fourth vertical blind holes and abut against the return springs therein;

[0044] The upper end of the first rack is perpendicularly and fixedly connected to the lower end surface of the pressing plate, and the lower end extends into the housing;

[0045] The first transmission shaft is perpendicularly arranged in the housing with respect to the first rack, and both ends thereof are connected to the inner wall of the housing through bearings and can rotate freely relative to the housing;

[0046] The first flywheel, the inner ring of the first one-way bearing, and the second gear are sequentially arranged on the first transmission shaft and are coaxially and fixedly connected to the first transmission shaft;

[0047] The first gear is a hollow gear, sleeved outside the first transmission shaft, coaxially and fixedly connected to the outer ring of the first one-way bearing, and the first gear meshes with the first rack, so that when the pressing plate is pressed down, the first rack drives the first gear and then drives the first transmission shaft to rotate through the first one-way bearing, and when the pressing plate is lifted, the first rack drives the first one-way bearing to rotate idly through the first gear and the first transmission shaft does not rotate;

[0048] The transmission module includes a second transmission shaft, a third gear, and a fourth gear;

[0049] The second transmission shaft is arranged in the housing parallel to the first transmission shaft, and both ends thereof are connected to the inner wall of the housing through bearings and can rotate freely relative to the housing;

[0050] The third gear and the fourth gear are both arranged on the second transmission shaft and are coaxially and fixedly connected to the second transmission shaft;

[0051] The third gear meshes with the second gear;

[0052] A partition is provided in the housing;

[0053] The power generation module includes a fifth gear, a third transmission shaft, a driving rotor, a driven rotor, a crank connecting rod, an energy storage unit, a second rack, a sixth gear, a second one-way bearing, a motor, and a second flywheel;

[0054] An installation hole for installing the third transmission shaft is provided on the partition; the third transmission shaft is arranged in the housing parallel to the second transmission shaft, one end is connected to the inner wall of the housing through a bearing, and the other end passes through the installation hole of the partition and is connected to the installation hole of the partition through a bearing and can rotate freely relative to the housing;

[0055] The fifth gear is arranged on the third transmission shaft and is coaxially and fixedly connected to the third transmission shaft, and the fifth gear meshes with the fourth gear;

[0056] As Figure 4 shown, the driving rotor is in a disc shape and is coaxially and fixedly connected to the end of the third rotating shaft passing through the partition, and a first protrusion for driving the driven rotor to rotate is provided on its outer wall;

[0057] The driven rotor is in an annular shape and is arranged between the driving rotor and the partition. Its inner wall is connected to the third transmission shaft through a bearing and can rotate freely relative to the third transmission shaft; a second protrusion is provided on the outer wall of the driven rotor, and a hinge column and a transmission column are perpendicularly and fixedly connected to the side of the second protrusion facing the driving rotor; the hinge column is used to cooperate with the first protrusion when the driving rotor rotates so that the driven rotor follows to rotate; the transmission column is located outside the first protrusion, and one end of the transmission column away from the second protrusion is perpendicularly and rotatably connected to one end of the crank connecting rod;

[0058] The energy storage unit includes an impact rod, an energy storage spring, a first fixing ring, a second fixing ring, a first fixing rod, a second fixing rod and a retaining ring. Among them, the first fixing rod and the second fixing rod are arranged in parallel, with one end perpendicularly and fixedly connected to the first fixing ring and the other end perpendicularly and fixedly connected to the second fixing ring; the first fixing rod is fixedly connected to the partition board; one end of the impact rod is hinged to the end of the crank connecting rod away from the transmission column, and the other end sequentially passes through the first fixing ring, the retaining ring and the second fixing ring. The impact rod has a clearance fit with the first fixing ring and the second fixing ring, and the impact rod is perpendicularly and fixedly connected to the retaining ring; the energy storage spring is sleeved on the impact rod, with one end abutted against the first fixing ring and the other end abutted against the retaining ring;

[0059] The second rack is coaxially and fixedly connected to the end of the impact rod away from the crank connecting rod;

[0060] The motor is fixed on the partition board;

[0061] The inner ring of the second one-way bearing and the second flywheel are both arranged on the input shaft of the motor and are coaxially and fixedly connected to the input shaft of the motor;

[0062] The sixth gear is a hollow gear, sleeved outside the input shaft of the motor and coaxially and fixedly connected to the outer ring of the second one-way bearing. The sixth gear meshes with the second rack, so that when the impact rod pops outwards under the action of the energy storage spring, the second rack drives the sixth gear to rotate, and then drives the input shaft of the motor to rotate through the second one-way bearing for power generation. When the impact rod is pulled inwards to contract, the second rack drives the second one-way bearing to idle through the sixth gear.

[0063] N is preferably taken as 2.

[0064] The present invention is arranged under the speed bump, and its working principle is as follows:

[0065] Such as Figure 5As shown in the figure, when the vehicle passes over the speed bump, the pressing plate descends, driving the first rack to move downward. The first rack drives the first gear, which in turn drives the first transmission shaft to rotate through the first one-way bearing. The excess energy other than the instantaneous descent of the pressing plate is stored by the first flywheel and slowly released to keep the first transmission shaft rotating smoothly. The first transmission shaft drives the third gear to rotate, which is transmitted through the second transmission shaft to drive the fourth gear to rotate, thereby driving the fifth gears of each power generation module to rotate. The fifth gears drive the active rotor to rotate through the third transmission shaft. The first protrusion of the active rotor abuts against the transmission column to drive the passive rotor to rotate, and the impact rod is retracted through the link mechanism to compress and store energy in the energy storage spring. At this time, the second rack drives the sixth gear to rotate the second one-way bearing idly, and the motor does not generate electricity. After the active rotor rotates 180°, the energy storage spring rebounds, driving the driven rotor to separate from the active rotor through the link mechanism. The impact rod pops out to push the second rack to drive the sixth gear to rotate, and then drives the input shaft of the motor to rotate through the second one-way bearing. The second flywheel collects the elastic potential energy instantaneously released by the energy storage spring and slowly releases it to keep the motor rotating stably in the same direction for power generation. When the vehicle drives away from the speed bump, the pressing plate rises back under the action of the return spring, and the first rack moves upward. The first gear drives the first one-way bearing to rotate idly, and the first transmission shaft does not rotate.

[0066] The current generated by the motors of each power generation module is output after rectification.

[0067] By using the one-way ratchet and the flywheel, the present invention stabilizes the rotation direction of the motor. The energy storage crank-slider is used to improve the problems of large energy fluctuation and unstable power generation in the traditional mechanical energy storage speed bump for energy collection. Combined with the full-controlled three-phase rectification technology, the generated electric energy is collected and stored, which can further improve the deficiencies of the existing mechanical energy storage speed bump in energy collection, convert this part of the energy into electric energy, realize the recycling of energy, and achieve the purpose of green energy.

[0068] Those skilled in the art of the present technology can understand that, unless otherwise defined, all terms used herein (including technical terms and scientific terms) have the same meaning as the general understanding of those of ordinary skill in the technical field to which the present invention belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless defined as herein.

[0069] The specific embodiments described above further elaborate on the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for generating electricity based on the vibration of a speed bump, characterized in that, It includes a housing, a pressing module, a transmission module, and N power generation modules, where N is a natural number greater than or equal to 1; The upper end of the housing is open and hollow; The pressing module includes a pressing plate, first to fourth support columns, first to fourth return springs, a first rack, a first transmission shaft, a first gear, a first one-way bearing, a first flywheel, and a second gear; The housing is provided with first to fourth vertical blind holes corresponding to the first to fourth support columns one by one; the first to fourth return springs are arranged in the first to fourth vertical blind holes one by one; the upper ends of the first to fourth support columns are perpendicularly and fixedly connected to the lower end surface of the pressing plate, and the lower ends extend into the first to fourth vertical blind holes one by one and abut against the return springs therein; The upper end of the first rack is perpendicularly and fixedly connected to the lower end surface of the pressing plate, and the lower end extends into the housing; The first transmission shaft is arranged in the housing perpendicular to the first rack, and both ends thereof are connected to the inner wall of the housing through bearings and can rotate freely relative to the housing; The first flywheel, the inner ring of the first one-way bearing, and the second gear are sequentially arranged on the first transmission shaft and are coaxially and fixedly connected to the first transmission shaft; The first gear is a hollow gear, sleeved outside the first transmission shaft, coaxially and fixedly connected to the outer ring of the first one-way bearing, and the first gear meshes with the first rack, so that when the pressing plate is pressed down, the first rack drives the first gear and then drives the first transmission shaft to rotate through the first one-way bearing, and when the pressing plate is lifted, the first rack drives the first one-way bearing to idle through the first gear and the first transmission shaft does not rotate; The transmission module includes a second transmission shaft, a third gear, and a fourth gear; The second transmission shaft is arranged in the housing parallel to the first transmission shaft, and both ends thereof are connected to the inner wall of the housing through bearings and can rotate freely relative to the housing; The third gear and the fourth gear are both arranged on the second transmission shaft and are coaxially and fixedly connected to the second transmission shaft; The third gear meshes with the second gear; A partition is provided in the housing; The power generation module includes a fifth gear, a third transmission shaft, a driving rotor, a driven rotor, a crank-link mechanism, an energy storage unit, a second rack, a sixth gear, a second one-way bearing, a motor, and a second flywheel; The partition is provided with a mounting hole for mounting the third transmission shaft; the third transmission shaft is arranged in the housing parallel to the second transmission shaft, one end is connected to the inner wall of the housing through a bearing, and the other end passes through the mounting hole of the partition and is connected to the mounting hole of the partition through a bearing and can rotate freely relative to the housing; The fifth gear is arranged on the third transmission shaft and is coaxially and fixedly connected to the third transmission shaft, and the fifth gear meshes with the fourth gear; The driving rotor is in a disc shape and is coaxially and fixedly connected to the end of the third transmission shaft passing through the partition, and a first protrusion for driving the driven rotor to rotate is provided on its outer wall; The driven rotor is in an annular shape and is arranged between the driving rotor and the partition plate. Its inner wall is connected to the third transmission shaft through a bearing and can rotate freely relative to the third transmission shaft. A second protrusion is provided on the outer wall of the driven rotor. An articulated column and a transmission column are perpendicularly and fixedly connected to the side of the second protrusion facing the driving rotor. The articulated column is used to cooperate with the first protrusion when the driving rotor rotates so that the driven rotor follows and rotates. The transmission column is located outside the first protrusion, and one end of the transmission column away from the second protrusion is perpendicularly and rotatably connected to one end of the crank connecting rod. The energy storage unit includes an impact rod, an energy storage spring, a first fixing ring, a second fixing ring, a first fixing rod, a second fixing rod, and a retaining ring. Among them, the first fixing rod and the second fixing rod are arranged in parallel, with one end perpendicularly and fixedly connected to the first fixing ring and the other end perpendicularly and fixedly connected to the second fixing ring. The first fixing rod is fixedly connected to the partition plate. One end of the impact rod is hinged to the end of the crank connecting rod away from the transmission column, and the other end sequentially passes through the first fixing ring, the retaining ring, and the second fixing ring. The impact rod is in clearance fit with the first fixing ring and the second fixing ring, and the impact rod is perpendicularly and fixedly connected to the retaining ring. The energy storage spring is sleeved on the impact rod, with one end abutted against the first fixing ring and the other end abutted against the retaining ring. The second rack is coaxially and fixedly connected to the end of the impact rod away from the crank connecting rod. The motor is fixed on the partition plate. The inner ring of the second one-way bearing and the second flywheel are both arranged on the input shaft of the motor and are coaxially and fixedly connected to the input shaft of the motor. The sixth gear is a hollow gear, sleeved outside the input shaft of the motor, and is coaxially and fixedly connected to the outer ring of the second one-way bearing. The sixth gear meshes with the second rack, so that when the impact rod pops outwards under the action of the energy storage spring, the second rack drives the sixth gear to rotate, and then drives the input shaft of the motor to rotate through the second one-way bearing for power generation. When the impact rod is pulled inwards to contract, the second rack drives the second one-way bearing to idle through the sixth gear.

2. The device for generating electricity based on the vibration of a speed bump according to claim 1, characterized in that, N is taken as 2.

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