Piezoelectric deceleration strip structure

Abstract

The utility model relates to the technical field of deceleration strips, in particular to a piezoelectric type deceleration strip structure which comprises a deceleration strip body and a piezoelectric mechanism arranged in the deceleration strip body, and the piezoelectric mechanism comprises a substrate, piezoelectric ceramics and an elastic piece. A power generation groove is formed in the deceleration strip body, the base plate is connected with the power generation groove through the elastic pieces, the two elastic pieces are arranged on the two opposite sides of the base plate in the length direction of the base plate, the base plate is connected with the vibration head through the connecting block, the vibration head is located above the base plate, the piezoelectric ceramics are arranged on the two sides of the base plate, and the piezoelectric ceramics are located between the two elastic pieces. The power generation groove is formed in the deceleration strip body, the piezoelectric ceramics are arranged in the power generation groove and prevented from being directly extruded by wheels, and the service life of the deceleration strip is prolonged. The vibration head is extruded by the wheels, so that the substrate is bent by the connecting block which is located in the middle and moves downwards under the support of the elastic pieces on the two sides, the piezoelectric ceramics are synchronously bent along with the bending of the substrate, the piezoelectric ceramics are extruded to generate power during bending, and the power generation efficiency is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of speed bumps, in particular to a piezoelectric speed bump structure. Background Art

[0002] A speed bump, also known as a speed hump, is a traffic facility installed on a road to slow down passing vehicles. It is generally set at road crossings, industrial and mining enterprises, schools, the entrances of residential communities and other sections where vehicles need to slow down and sections prone to traffic accidents. It is a new type of traffic safety facility suitable for reducing the driving speed of motor vehicles and non-motor vehicles.

[0003] The common shape of a speed bump is generally strip-shaped, and the material is mainly rubber, which makes the road surface slightly arched. When a vehicle passes over the speed bump, the raised speed bump causes bumps to the vehicle, thus forcing the vehicle to slow down. Therefore, certain mechanical vibration energy will be generated during the use of the speed bump, and this part of the energy can be collected through an energy conversion device. For example, the Chinese invention patent application with the publication number of CN116455267A provides a device for piezoelectric power generation of a speed bump, which includes a speed bump, an electric energy collection circuit and a piezoelectric power generation layer. The piezoelectric power generation layer includes two piezoelectric composite layers and a substrate. The two piezoelectric composite layers are respectively arranged on the top surface and the bottom surface of the substrate. The mechanical energy of the pressure and impact force of the speed bump is converted into electric energy and collected through the electric energy collection circuit, realizing power generation through the speed bump.

[0004] However, in the above scheme, the piezoelectric power generation layer is directly buried inside the speed bump. When a car is driving, the piezoelectric power generation layer is easy to be in direct contact with the speed bump, thereby reducing its service life and increasing the maintenance cost. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a piezoelectric speed bump structure to solve the problem that the direct contact between the piezoelectric power generation structure and the speed bump in the existing piezoelectric speed bump reduces the service life.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A piezoelectric speed bump structure includes a speed bump main body and a piezoelectric mechanism arranged inside the speed bump main body. The piezoelectric mechanism includes a substrate, piezoelectric ceramics and elastic members;

[0008] A power generation groove is formed on the speed bump main body. The substrate is elastically connected with the power generation groove through an elastic member. The number of elastic members is two, and the two elastic members are arranged on the opposite sides of the substrate along the length direction of the substrate. The substrate is connected with a vibration head through a connecting block. The vibration head matches the notch of the power generation groove, and the vibration head is located above the substrate. The piezoelectric ceramics are arranged on the upper and lower sides of the substrate, and the piezoelectric ceramics are located between the two elastic members.

[0009] Further defined, guide grooves are provided along the vertical direction on both opposite sides of the power generation groove, and guide blocks matching the corresponding guide grooves are provided on both opposite sides of the vibration head.

[0010] Further defined, the connecting block is located at the middle position of the substrate, and the piezoelectric ceramics are also provided on both opposite sides of the connecting block, and the piezoelectric ceramics are close to the connecting block.

[0011] Further defined, a protective layer is provided on the outer side of the speed bump main body, and the protective layer covers above the vibration head.

[0012] Further defined, a buffer cavity is also provided in the speed bump main body, a pressure-bearing component and a plurality of buffer units are provided in the buffer cavity, the buffer cavity is located below the power generation groove, the pressure-bearing component is located at the top of the buffer cavity, and the plurality of buffer units are arranged in an array below the pressure-bearing component.

[0013] Further defined, the buffer unit includes a buffer column, a buffer pad and a plurality of buffer members;

[0014] The number of the buffer pads is two, the two buffer pads are arranged on the upper and lower sides of the buffer column, the plurality of buffer members are connected to the outer wall of the buffer column in a circumferential array around the center of the buffer column, and the plurality of buffer members are all located between the two buffer pads.

[0015] Further defined, buffer grooves are provided on the buffer members.

[0016] Further defined, a bottom plate is provided at the bottom of the speed bump main body, the bottom plate is provided below the buffer cavity, and mounting plates are provided on both opposite sides of the bottom plate, and the mounting plates are located outside the speed bump main body.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. By providing a power generation groove in the speed bump main body, the piezoelectric ceramics are arranged in the power generation groove to avoid being directly extruded by the wheels, so as to improve its service life and reduce the maintenance and repair costs; by the wheels extruding the vibration head, the substrate is bent by the connecting block located in the middle and moving downward under the support of the elastic members on both sides, and the piezoelectric ceramics bend synchronously with the bending of the substrate, so as to realize the piezoelectric ceramics being extruded for power generation when bending, ensure the power generation efficiency, and meet the actual use requirements.

[0019] 2. The present utility model also provides a buffer cavity in the speed bump main body, which reduces the deformation size of the speed bump main body, improves the structural stability of the speed bump main body, avoids the connection between the speed bump main body and the road surface from becoming loose after frequent rolling, and further improves the service life of the overall structure. Description of the Drawings

[0020] Figure 1 Schematic front sectional structure view of the present utility model;

[0021] Figure 2 Schematic sectional structure view of the power generation groove of the present utility model;

[0022] Figure 3 Schematic structure view of the buffer unit of the present utility model;

[0023] Figure 4 Schematic top view structure of the present utility model;

[0024] Figure 5 Schematic structure view of the bolt of the present utility model;

[0025] In the figure: 10 - speed bump main body; 11 - power generation groove; 12 - vibration head; 13 - guide groove; 14 - guide block; 20 - piezoelectric mechanism; 21 - substrate; 22 - piezoelectric ceramic; 23 - elastic member; 24 - connecting block; 30 - protective surface layer; 31 - first anti-slip protrusion; 32 - second anti-slip protrusion; 40 - buffer cavity; 41 - pressure-bearing member; 50 - buffer unit; 51 - buffer column; 52 - buffer pad; 53 - buffer member; 54 - buffer groove; 60 - bottom plate; 70 - mounting plate; 71 - bolt; 72 - tension spring; 73 - buffer layer. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-5 , a piezoelectric speed bump structure provided by the present utility model includes a speed bump main body 10 and a piezoelectric mechanism 20 disposed in the speed bump main body 10. Among them, a power generation groove 11 is formed in the speed bump main body 10, the notch of the power generation groove 11 is vertically upward, the power generation groove 11 is located at the middle position in the width direction of the speed bump main body 10, and the piezoelectric mechanism 20 is disposed in the power generation groove 11.

[0028] The piezoelectric mechanism 20 includes a substrate 21, piezoelectric ceramics 22 and elastic members 23. The number of elastic members 23 is two, and the two elastic members 23 are arranged on the left and right sides in the width direction of the substrate 21. The substrate 21 is arranged in the same direction as the speed bump main body 10. The piezoelectric ceramics 22 are arranged on the upper and lower sides of the substrate 21. At this time, a vibration head 12 matching the notch of the power generation groove 11 is arranged at the notch of the power generation groove 11. The vibration head 12 is connected to the substrate 21 through a connecting block 24. The connecting block 24 is arranged between the substrate 21 and the vibration head 12. The elastic members 23 are arranged at the bottom of the substrate 21. Therefore, when a vehicle drives over the speed bump main body 10, the wheel presses on the vibration head 12 and moves downward. The vibration head 12 squeezes the middle position of the substrate 21 downward through the connecting block 24. The two sides of the substrate 21 move downward a short distance under the support of the elastic members 23, so that the substrate 21 is bent. At this time, the piezoelectric ceramics 22 connected to both sides of the substrate 21 are bent together with the substrate 21. Repeating this process can achieve efficient power generation.

[0029] After the vehicle passes by, the middle position of the substrate 21 begins to recover upward, so that the piezoelectric ceramics 22 on the lower side of the substrate 21 are squeezed and generate electricity again, improving the power generation efficiency and meeting the power generation demand.

[0030] The connection between the piezoelectric ceramics 22 through the substrate 21 and the elastic members 23 can prevent the impact of the vehicle from directly squeezing the piezoelectric ceramics 22, thereby increasing the service life of the piezoelectric ceramics 22, with high reliability, reducing the maintenance and repair costs, and meeting the actual use requirements.

[0031] To improve the power generation efficiency, it is further preferably that the number of piezoelectric ceramics 22 is four. Two piezoelectric ceramics 22 are respectively arranged on the upper and lower sides of the substrate 21. The two piezoelectric ceramics 22 on the same side are arranged on the left and right sides of the connecting block 24, and all four piezoelectric ceramics 22 are arranged close to the connecting block 24 to increase their bending deformation degree and improve the power generation efficiency.

[0032] The piezoelectric ceramics 22 collect and utilize the electric quantity through an existing current collecting mechanism.

[0033] Further explanation, to prevent the vibration head 12 from shaking when vibrating up and down in the power generation groove 11 before and after the vehicle drives over the speed bump main body 10, which may cause vibration obstruction and affect the power generation stability, a guiding groove 13 is selected to be opened in the power generation groove 11. The guiding groove 13 is vertically arranged on the left and right sides of the power generation groove 11. Correspondingly, guiding blocks 14 matching the guiding groove 13 are arranged on the left and right sides of the vibration head 12, so that the vibration head 12 can vibrate up and down along the guiding groove 13 by means of the guiding blocks 14, improving the structural stability and reliability.

[0034] Meanwhile, in order to prevent sand and sundries outside the speed bump main body 10 from falling into the guiding groove 13, a protective surface layer 30 is provided on the outer side of the speed bump main body 10. At this time, the protective surface layer 30 can not only protect the power generation groove 11, but also protect the outside of the speed bump main body 10, further improving the reliability of the overall structure.

[0035] The protective surface layer 30 is made of a rubber shell. Second anti-slip protrusions 32 are evenly distributed at the central position of the protective surface layer 30, and first anti-slip protrusions 31 are evenly distributed on both sides of the top of the protective surface layer 30, increasing the friction between the wheels and the speed bump main body 10 and reducing the slipping phenomenon.

[0036] Furthermore, in order to prevent the frequent impact of the vehicle driving on the speed bump main body 10 from causing a reduction in the structural strength of the speed bump main body 10, a buffer cavity 40 is provided in the speed bump main body 10, and a plurality of buffer units 50 are provided in the buffer cavity 40 for buffering the impact on the speed bump main body 10 and reducing the damage to the speed bump main body 10.

[0037] Specifically, the buffer cavity 40 is provided below the power generation groove 11, preferably directly below the power generation groove 11. A pressure-bearing member 41 is provided in the buffer cavity 40, and the pressure-bearing member 41 is provided at the top of the buffer cavity 40. A plurality of buffer units 50 are arranged in an array below the pressure-bearing member 41 for buffering the impact on the speed bump main body 10.

[0038] Among them, the buffer unit 50 includes a buffer column 51, a buffer pad 52 and a plurality of buffer members 53. The number of buffer pads 52 is two, and the two buffer pads 52 are provided at the upper and lower ends of the buffer column 51. The pressure-bearing member 41 is connected to the buffer pad 52 at the top of the buffer column 51. A plurality of buffer members 53 are arranged at equal intervals in a circumferential manner around the axis of the buffer column 51 to disperse the impact force and improve the buffering efficiency; at the same time, buffer grooves 54 are provided on the buffer members 53.

[0039] The buffer unit 50 can be made of rubber material to improve the service life.

[0040] Furthermore, a bottom plate 60 is provided at the bottom of the speed bump main body 10, the buffer cavity 40 is provided above the bottom plate 60, and mounting plates 70 are provided on the left and right sides of the bottom plate 60. During use, the speed bump main body 10 is stably connected by connecting the mounting plates 70 to the ground.

[0041] Specifically, bolts 71 are provided on the mounting plate 70. The mounting plate 70 is connected to the ground through the bolts 71. A tension spring 72 and a buffer layer 73 are provided inside the bolts 71. The buffer layer 73 contacts the upper end surface of the mounting plate 70. Under the action of the tension spring 72, the buffer layer 73 is always in close contact with the top surface of the mounting plate 70. When subjected to an external force, the bolts 71 are not easily loosened, improving the firmness of the speed bump main body 10 after installation.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

Claims

1. A piezoelectric speed bump structure, characterized in that: It comprises a speed bump body (10) and a piezoelectric mechanism (20) arranged in the speed bump body (10), wherein the piezoelectric mechanism (20) comprises a substrate (21), piezoelectric ceramics (22) and an elastic member (23); The speed bump body (10) is provided with a power generation slot (11), the substrate (21) is elastically connected to the power generation slot (11) via an elastic member (23), the number of the elastic members (23) is two, the two elastic members (23) are arranged on opposite sides of the substrate (21) along the length direction of the substrate (21), the substrate (21) is connected to a vibration head (12) via a connecting block (24), the vibration head (12) matches the notch of the power generation slot (11), the vibration head (12) is located above the substrate (21), the piezoelectric ceramic (22) is arranged on the upper and lower sides of the substrate (21), and the piezoelectric ceramic (22) is located between the two elastic members (23).

2. The piezoelectric speed bump structure according to claim 1, characterized in that: The power generation slot (11) is provided with guide grooves (13) on opposite sides in the vertical direction, and the vibration head (12) is provided with guide blocks (14) matching the corresponding guide grooves (13) on opposite sides.

3. The piezoelectric speed bump structure according to claim 2, characterized in that: The connection block (24) is located in the middle of the substrate (21), and the piezoelectric ceramics (22) are also arranged on two opposite sides of the connection block (24), with the piezoelectric ceramics (22) being close to the connection block (24).

4. The piezoelectric speed bump structure according to claim 3, characterized in that: A protective surface layer (30) is provided on the outside of the speed bump body (10), and the protective surface layer (30) covers the top of the vibration head (12).

5. The piezoelectric speed bump structure according to claim 4, characterized in that: A buffer chamber (40) is also provided in the speed bump body (10), a pressure-bearing component (41) and a plurality of buffer units (50) are provided in the buffer chamber (40), the buffer chamber (40) is located below the power generation slot (11), the pressure-bearing component (41) is located at the top of the buffer chamber (40), and a plurality of buffer units (50) are arranged in an array below the pressure-bearing component (41).

6. The piezoelectric speed bump structure according to claim 5, characterized in that: The buffer unit (50) comprises a buffer column (51), a buffer pad (52) and a plurality of buffer members (53); The number of the buffer pads (52) is two, and the two buffer pads (52) are arranged on the upper and lower sides of the buffer column (51); the plurality of buffer members (53) are connected to the outer wall of the buffer column (51) in an array around the center of the buffer column (51); and the plurality of buffer members (53) are all located between the two buffer pads (52).

7. The piezoelectric speed bump structure according to claim 6, characterized in that: The buffer member (53) is provided with a buffer groove (54).

8. The piezoelectric speed bump structure according to claim 7, characterized in that: A bottom plate (60) is provided at the bottom of the speed bump body (10), and the bottom plate (60) is arranged below the buffer cavity (40). Mounting plates (70) are provided on opposite sides of the bottom plate (60), and the mounting plates (70) are located outside the speed bump body (10).

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