Piezoelectric energy harvesting device applied to walking path

Abstract

The utility model relates to a piezoelectric energy harvesting device applied to a walking path, belongs to the technical field of piezoelectric energy harvesting, and aims to solve the problem of kinetic energy waste generated when people walk in specific areas such as entrance or exit of public transportation such as subways and trains and a security check area for security check. The piezoelectric energy harvesting device comprises a top rubber layer and a plurality of piezoelectric energy harvesting units, the piezoelectric energy harvesting units are sequentially arranged in a groove at equal intervals in the length extension direction of the groove, the bottom of each piezoelectric energy harvesting unit is fixedly connected with the groove bottom of the groove, and the top rubber layer covers the groove. The edge of the top rubber layer is detachably connected with the road surface around the groove through bolts, the top of each piezoelectric energy harvesting unit is higher than the ground, the top of each piezoelectric energy harvesting unit makes close contact with the bottom face of the top rubber layer, and each piezoelectric energy harvesting unit is connected with an energy storage device through a wire. The device is mainly used for carrying out kinetic energy and electric energy conversion in crowded areas.

Description

Technical Field

[0001] The utility model relates to the technical field of piezoelectric energy harvesting, and specifically to a piezoelectric energy harvesting device applied in a traveling path. Background Art

[0002] Piezoelectric energy harvesting is a technology that uses the force-to-electric conversion characteristics of piezoelectric materials to convert mechanical energy in the environment into electrical energy. Piezoelectric energy harvesting technology is widely used in the fields of kinetic energy recovery and conversion. In life, the human body also generates a large amount of kinetic energy when walking. Since the walking path of a person is irregular in most cases, this part of the kinetic energy is not easy to collect and convert. However, in some specific areas of life, people's activity trajectories are cyclical, such as at the entrances or exits of public transportation such as subways and trains, and security inspection areas for security checks. In such areas, people walk according to specific rules and walking paths. If the mechanical energy of people walking can be effectively recovered and converted based on the walking characteristics of people in such areas, it will greatly reduce the waste of kinetic energy generated when people walk. Therefore, the development of a piezoelectric energy harvesting device for use in walking paths is in line with practical needs. Utility Model Content

[0003] In order to solve the problem of kinetic energy waste when people walk in specific areas such as entrances or exits of public transportation such as subways and trains, and security inspection areas for security inspections, the utility model provides a piezoelectric energy capture device used in the walking path;

[0004] A piezoelectric energy harvesting device used in a walking path, the piezoelectric energy harvesting device is located in a groove processed on the ground, the length extension direction of the groove is the same as the width extension direction of the road surface, the piezoelectric energy harvesting device includes a top rubber layer and a plurality of piezoelectric energy harvesting units, the plurality of piezoelectric energy harvesting units are arranged in the groove in sequence and equidistantly along the length extension direction of the groove, and the bottom of each piezoelectric energy harvesting unit is fixedly connected to the groove bottom of the groove, the top rubber layer covers the groove, and the edge of the top rubber layer is detachably connected to the road surface around the groove by bolts, the top of each piezoelectric energy harvesting unit is arranged above the ground, and the top of each piezoelectric energy harvesting unit is in close contact with the bottom surface of the top rubber layer, and each piezoelectric energy harvesting unit is connected to an energy storage device through a wire;

[0005] Further, the piezoelectric energy capture unit includes an upper pressure head, a reset component, a bottom plate and N piezoelectric components, N is a positive integer, the bottom plate is fixed to the bottom of the groove, the upper pressure head is arranged directly above the bottom plate, the top of the upper pressure head is arranged above the ground, and the top of the upper pressure head is in close contact with the bottom surface of the top rubber layer, the reset component and the N piezoelectric components are arranged between the upper pressure head and the bottom plate, the bottom end of the reset component is fixed at the center of the top of the bottom plate, the top end of the reset component is fixed at the center of the bottom of the upper pressure head, the N piezoelectric components are equidistantly surrounded on the outside of the reset component along the circumferential direction, the bottom end of each piezoelectric component is fixedly connected to the top of the bottom plate, the top end of each piezoelectric component is fixedly connected to the bottom of the upper pressure head, and each piezoelectric component is connected to the energy storage device through a wire;

[0006] Furthermore, the top of the upper pressure head is arranged as an arc-shaped surface;

[0007] Further, the reset assembly includes a connecting column and a reset spring, the connecting column is arranged between the upper pressure head and the bottom plate in the vertical direction, and the top end of the connecting column is fixedly connected to the bottom center of the upper pressure head, the reset spring is arranged below the connecting column in the vertical direction, and the axis of the reset spring is arranged colinearly with the axis of the connecting column, the top end of the reset spring is fixedly connected to the bottom end of the connecting column, and the bottom end of the reset spring is fixedly connected to the top center of the bottom plate;

[0008] Further, the piezoelectric component includes a guide sleeve, a guide column, a support column, a mounting frame, a piezoelectric sheet and a pressure hammer part. The guide sleeve is arranged on the top of the base plate in the vertical direction, and the bottom end of the guide sleeve is fixedly connected to the top of the base plate. The support column is arranged in the guide sleeve, and the axis of the support column is arranged in a collinear manner with the axis of the guide sleeve. The bottom end of the support column is fixedly connected to the top of the base plate. The mounting frame is fixed to the top end of the support column. The piezoelectric sheet is arranged in the mounting frame, and the piezoelectric sheet is detachably connected to the mounting frame. The piezoelectric sheet is connected to the energy storage device through a wire. The guide column is arranged at the bottom of the upper pressure head in the vertical direction, and the axis of the guide column is arranged in a collinear manner with the axis of the guide sleeve. The top end of the guide column is fixedly connected to the bottom of the upper pressure head. The bottom end of the guide column is inserted in the guide sleeve, and a sliding gap is provided between the guide column and the guide sleeve. The bottom end of the guide column is fixedly connected to the pressure hammer part, and the pressure hammer part and the piezoelectric sheet are arranged correspondingly up and down.

[0009] Furthermore, the pressure hammer part includes a pressure hammer mounting seat and a pressure hammer, the pressure hammer mounting seat is fixed to the bottom end of the guide column, the pressure hammer is installed in the pressure hammer mounting seat, and the pressure hammer and the piezoelectric sheet are arranged correspondingly up and down;

[0010] Further, the pressure hammer part includes a buffer spring, a pressure hammer mounting seat and a pressure hammer, the buffer spring is arranged at the bottom end of the guide column in the vertical direction, and the top end of the buffer spring is fixedly connected to the bottom end of the guide column, the pressure hammer mounting seat is fixedly connected to the bottom end of the buffer spring, the pressure hammer is installed in the pressure hammer mounting seat, and the pressure hammer and the piezoelectric sheet are arranged correspondingly up and down;

[0011] Furthermore, the value range of N is 3 to 6;

[0012] The beneficial effects of this application compared to the prior art are as follows:

[0013] In this embodiment, a piezoelectric energy capture device used in a walking path is provided. The device is arranged at a subway exit, entrance or security checkpoint or other special areas. When a person walks over the device, the upper pressure block will move downward under the action of the pedal force, and at the same time drive the pressure hammer at the end of the guide column to impact the piezoelectric sheet below. When the piezoelectric sheet is impacted and vibrates, it will generate electric charge. The kinetic energy of the human body during walking can be converted into electrical energy for storage by collecting the charge through a wire. Since the charge generated by the piezoelectric sheet at one time is very limited, in order to ensure the stability of the kinetic energy conversion, it is necessary to continuously apply pressure to the piezoelectric sheet in a unit time. When a vehicle enters or exits a station, passengers getting on and off the vehicle will form a certain scale of human flow in a unit time. As the human flow passes through the device during walking, the kinetic energy can be effectively converted into electrical energy, which can avoid the waste of kinetic energy when the human body is walking to the greatest extent.

[0014] At the same time, considering that people are irregular and asynchronous when passing through the device, multiple piezoelectric energy harvesting units are set in the present application, and each piezoelectric energy harvesting unit is independent. Each piezoelectric energy harvesting unit will simultaneously vibrate multiple piezoelectric sheets when working at one time, which is also conducive to improving the conversion efficiency of electric energy;

[0015] In the present application, an independent reset mechanism is provided for each piezoelectric energy harvesting unit. When the pedestrian's foot is separated from the piezoelectric energy harvesting unit, the upper pressure block in the piezoelectric energy harvesting unit will return to its original position driven by the reset spring and wait for the next impact. This ensures the continuity of the operation of each piezoelectric energy harvesting unit and can continuously convert the kinetic energy of human walking.

[0016] In order to protect the piezoelectric energy harvesting unit from being affected by liquid and dust in the external environment, a top rubber layer is added on the top of the multiple piezoelectric energy harvesting units. The top rubber layer can effectively prevent liquid and dust from entering the groove, play a good sealing and protective role, and also make the device as a whole more beautiful from the outside;

[0017] The present application takes into account that when pedestrians are walking, some pedestrians may exert a large pedal force, causing the upper pressure block to descend too deep, and at the same time causing the pressure hammer to impact the piezoelectric sheet with a large impact stroke, which may easily cause damage to the piezoelectric sheet. Therefore, a buffer spring is arranged between the pressure hammer and the guide column. When the pressure hammer contacts the piezoelectric sheet, if the impact is large, the buffer spring will be in a contracted state to compensate for the impact stroke. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a main cross-sectional schematic diagram of the piezoelectric energy harvesting device described in this application;

[0019] Figure 2 A schematic top view of the piezoelectric energy harvesting device described in this application;

[0020] Figure 3 for Figure 2 AA direction schematic diagram in;

[0021] Figure 4 A schematic diagram of the arrangement of the piezoelectric energy harvesting unit in the piezoelectric energy harvesting device described in this application;

[0022] Figure 5 It is a schematic front view of a piezoelectric energy harvesting unit in the piezoelectric energy harvesting device described in the present application;

[0023] Figure 6 A schematic side view of a piezoelectric energy harvesting unit in the piezoelectric energy harvesting device described in the present application;

[0024] Figure 7 It is a side cross-sectional schematic diagram of a piezoelectric energy harvesting unit in the piezoelectric energy harvesting device described in the present application;

[0025] Figure 8 for Figure 7 A partial enlarged view of point B in the middle;

[0026] In the figure, 1 is a groove, 2 is a top rubber layer, 3 is an upper pressure head, 4 is a reset assembly, 41 is a connecting column, 42 is a reset spring, 5 is a piezoelectric assembly, 51 is a guide sleeve, 52 is a guide column, 53 is a buffer spring, 54 is a pressure hammer, 55 is a support column, 56 is a mounting frame, 57 is a piezoelectric sheet and 6 is a bottom plate. DETAILED DESCRIPTION

[0027] Specific implementation method 1: Combination Figures 1 to 8 The present embodiment is described. In the present embodiment, a piezoelectric energy harvesting device for use in a walking path is provided. The piezoelectric energy harvesting device is located in a groove 1 processed on the ground. The length extension direction of the groove 1 is the same as the width extension direction of the road surface. The piezoelectric energy harvesting device includes a top rubber layer 2 and a plurality of piezoelectric energy harvesting units. The plurality of piezoelectric energy harvesting units are equidistantly arranged in the groove 1 in sequence along the length extension direction of the groove 1, and the bottom of each piezoelectric energy harvesting unit is fixedly connected to the bottom of the groove 1. The top rubber layer 2 covers the groove 1, and the edge of the top rubber layer 2 is removably connected to the road surface around the groove 1 by bolts. The top of each piezoelectric energy harvesting unit is arranged above the ground, and the top of each piezoelectric energy harvesting unit is in close contact with the bottom surface of the top rubber layer 2. Each piezoelectric energy harvesting unit is connected to the energy storage device through a wire.

[0028] A piezoelectric energy harvesting device for use in a walking path is provided in the present embodiment, and a plurality of piezoelectric energy harvesting units are arranged, and each piezoelectric energy harvesting unit exists independently. The plurality of piezoelectric energy harvesting units will not affect each other during operation. At the same time, in order to protect the piezoelectric energy harvesting units from being affected by liquid and dust in the external environment, a top rubber layer 2 is added on the top of the plurality of piezoelectric energy harvesting units. The setting of the top rubber layer 2 can effectively prevent liquid and dust from entering the groove, thereby playing a good sealing and protective role, and can also make the overall device more beautiful from the outside.

[0029] Specific implementation method 2: Combination Figures 1 to 8 This embodiment is described. The difference between this embodiment and the first embodiment is that the piezoelectric energy capture unit includes an upper pressure head 3, a reset component 4, a bottom plate 6 and N piezoelectric components 5, N is a positive integer, the bottom plate 6 is fixed to the bottom of the groove 1, the upper pressure head 3 is arranged directly above the bottom plate 6, the top of the upper pressure head 3 is arranged above the ground, and the top of the upper pressure head 3 is in close contact with the bottom surface of the top rubber layer 2, the reset component 4 and the N piezoelectric components 5 are arranged between the upper pressure head 3 and the bottom plate 6, the bottom end of the reset component 4 is fixed at the center of the top of the bottom plate 6, the top of the reset component 4 is fixed at the center of the bottom of the upper pressure head 3, the N piezoelectric components 5 are equidistantly surrounded on the outside of the reset component 4 along the circumferential direction, the bottom end of each piezoelectric component 5 is fixedly connected to the top of the bottom plate 6, the top of each piezoelectric component 5 is fixedly connected to the bottom of the upper pressure head 3, and each piezoelectric component 5 is connected to the energy storage device through a wire. Other components and connection methods are the same as those in the first embodiment.

[0030] In this embodiment, each piezoelectric energy harvesting unit includes a plurality of piezoelectric components 5, so that the piezoelectric energy harvesting unit can generate a plurality of charge pulses simultaneously during one operation, which is beneficial to improving the conversion efficiency between kinetic energy and electrical energy.

[0031] Specific implementation method three: Combination Figures 1 to 8 The present embodiment is described as follows. The present embodiment is different from the second embodiment in that the top of the upper pressure head 3 is provided with an arc-shaped surface. The other components and connection methods are the same as those of the second embodiment.

[0032] With such arrangement, the top of the upper pressure head 3 is an arc-shaped surface which can form a good transition with the ground, thereby preventing the block-shaped pressure head from protruding abruptly from the ground and easily tripping pedestrians.

[0033] Specific implementation method four: Combination Figures 1 to 8This embodiment is described. The difference between this embodiment and the third embodiment is that the reset assembly 4 includes a connecting column 41 and a reset spring 42. The connecting column 41 is arranged between the upper pressure head 3 and the bottom plate 6 in the vertical direction, and the top of the connecting column 41 is fixedly connected to the bottom center of the upper pressure head 3. The reset spring 42 is arranged below the connecting column 41 in the vertical direction, and the axis of the reset spring 42 is arranged colinearly with the axis of the connecting column 41. The top of the reset spring 42 is fixedly connected to the bottom end of the connecting column 41, and the bottom end of the reset spring 42 is fixedly connected to the top center of the bottom plate 6. Other components and connection methods are the same as those of the third embodiment.

[0034] In this embodiment, when the pedestrian's foot is separated from the piezoelectric energy capture unit, the upper pressure block 3 in the piezoelectric energy capture unit will return to its original position under the drive of the reset spring 42 and wait for the next impact. This can ensure the continuity of the operation of each piezoelectric energy capture unit and continuously convert the kinetic energy of human walking.

[0035] Specific implementation method five: Combination Figures 1 to 8 The present embodiment is described. The present embodiment is different from the fourth embodiment in that the piezoelectric assembly 5 includes a guide sleeve 51, a guide column 52, a support column 55, a mounting frame 56, a piezoelectric sheet 57 and a pressure hammer. The guide sleeve 51 is arranged on the top of the base plate 6 in the vertical direction, and the bottom end of the guide sleeve 51 is fixedly connected to the top of the base plate 6. The support column 55 is arranged in the guide sleeve 51, and the axis of the support column 55 is arranged colinearly with the axis of the guide sleeve 51. The bottom end of the support column 55 is fixedly connected to the top of the base plate 6, and the mounting frame 56 is fixed to the top of the support column 55. The piezoelectric sheet 57 is arranged in the mounting frame 56, and the piezoelectric sheet 57 is detachably connected to the mounting frame 56, and the piezoelectric sheet 57 is connected to the energy storage device through a wire, the guide column 52 is arranged at the bottom of the upper pressure head 3 in the vertical direction, and the axis of the guide column 52 is arranged in a colinear manner with the axis of the guide sleeve 51, the top of the guide column 52 is fixedly connected to the bottom of the upper pressure head 3, the bottom end of the guide column 52 is inserted in the guide sleeve 51, and a sliding gap is provided between the guide column 52 and the guide sleeve 51, and a pressure hammer part is fixedly connected to the bottom end of the guide column 52, and the pressure hammer part is arranged correspondingly to the piezoelectric sheet 57 up and down. Other components and connection methods are the same as those of the fourth specific embodiment.

[0036] In the present embodiment, when a person walks over the device, the upper pressure block 3 will move downward under the action of the pedal force, and at the same time drive the pressure hammer part at the end of the guide column 52 to impact the piezoelectric sheet below. When the piezoelectric sheet 57 is impacted and vibrates, it will generate electric charge. By collecting the charge through a wire, the kinetic energy of the human body during walking can be converted into electrical energy for storage. Since the charge generated by the piezoelectric sheet 57 at one time is very limited, in order to ensure the stability of the kinetic energy conversion, it is necessary to continuously apply pressure to the piezoelectric sheet 57 per unit time. When the vehicle enters or exits the station, the passengers getting on and off the vehicle will form a certain scale of human flow per unit time. As the human flow passes through the device during walking, the kinetic energy can be effectively converted into electrical energy, which can avoid the waste of kinetic energy when the human body walks to the greatest extent.

[0037] Specific implementation method six: Combination Figures 1 to 8 This embodiment is described. This embodiment is different from the fifth embodiment in that the pressure hammer part includes a pressure hammer mounting seat and a pressure hammer 54. The pressure hammer mounting seat is fixed to the bottom end of the guide column 52. The pressure hammer 54 is installed in the pressure hammer mounting seat, and the pressure hammer 54 is arranged correspondingly to the piezoelectric sheet 57. Other components and connection methods are the same as those of the fifth embodiment.

[0038] Specific implementation method seven: Combination Figures 1 to 8 This embodiment is described. The difference between this embodiment and the sixth embodiment is that the pressure hammer part includes a buffer spring 53, a pressure hammer mounting seat and a pressure hammer 54. The buffer spring 53 is arranged at the bottom end of the guide column 52 in the vertical direction, and the top end of the buffer spring 53 is fixedly connected to the bottom end of the guide column 52. The pressure hammer mounting seat is fixedly connected to the bottom end of the buffer spring 53. The pressure hammer 54 is installed in the pressure hammer mounting seat, and the pressure hammer 54 is arranged correspondingly to the piezoelectric sheet 57. Other components and connection methods are the same as those of the fifth embodiment.

[0039] In the present embodiment, taking into account that when pedestrians are walking, some pedestrians may exert a large stepping force, causing the upper pressure block 3 to descend too deep, and at the same time causing the pressure hammer 54 to have a large impact stroke when impacting the piezoelectric sheet 57, which may easily cause damage to the piezoelectric sheet. Therefore, a buffer spring 53 is arranged between the pressure hammer and the guide column 51. When the pressure hammer 54 contacts the piezoelectric sheet 57, if the impact is large, the buffer spring 53 will be in a contracted state to compensate for the impact stroke.

[0040] Specific implementation method eight: Combination Figures 1 to 8 This embodiment is described. The difference between this embodiment and the seventh embodiment is that the value range of N is 3 to 6. The other components and connection methods are the same as those of the fifth embodiment.

[0041] The present invention has been disclosed as above with preferred implementation cases, but it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent implementation cases with equivalent changes by using the above-disclosed structures and technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above implementation cases based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

[0042] How it works

[0043] When the present application is working, firstly, a groove 1 is processed in the area where it needs to be arranged. After the groove 1 is processed, a plurality of piezoelectric energy-capturing units are arranged in the groove 1 at equal distances along the length extension direction of the groove 1. After the plurality of piezoelectric energy-capturing units are arranged, a top rubber layer 2 is laid on the top of the groove 1, and the top rubber layer 2 is disassembled and connected to the ground by bolts. It is worth noting that in order to prevent the protrusion of the bolt head from causing inconvenience to people's walking, a countersunk design can be adopted to hide the bolt head in the ground. When people walk over the device, the upper pressure block 3 will move downward under the action of the pedaling force, and at the same time drive the pressure hammer 54 at the end of the guide column 51 to impact the piezoelectric sheet 57 below. When the piezoelectric sheet 57 is impacted and vibrates, it will generate electric charge. By collecting the charge into the energy storage unit through a wire, the kinetic energy of the human body during walking can be converted into electrical energy for storage.

Claims

1. A piezoelectric energy harvesting device used in a traveling path, characterized in that: The piezoelectric energy harvesting device is located in a groove (1) processed on the ground, the length extension direction of the groove (1) is the same as the width extension direction of the road surface, the piezoelectric energy harvesting device comprises a top rubber layer (2) and a plurality of piezoelectric energy harvesting units, the plurality of piezoelectric energy harvesting units are arranged in the groove (1) in sequence and equidistantly along the length extension direction of the groove (1), and the bottom of each piezoelectric energy harvesting unit is fixedly connected to the groove bottom of the groove (1), the top rubber layer (2) covers the groove (1), and the edge of the top rubber layer (2) is detachably connected to the road surface around the groove (1) by bolts, the top of each piezoelectric energy harvesting unit is arranged above the ground, and the top of each piezoelectric energy harvesting unit is in close contact with the bottom surface of the top rubber layer (2), and each piezoelectric energy harvesting unit is connected to the energy storage device via a wire.

2. The piezoelectric energy harvesting device used in a traveling path according to claim 1, characterized in that: The piezoelectric energy capture unit comprises an upper pressure head (3), a reset component (4), a bottom plate (6) and N piezoelectric components (5), wherein N is a positive integer, the bottom plate (6) is fixed to the bottom of the groove (1), the upper pressure head (3) is arranged directly above the bottom plate (6), the top of the upper pressure head (3) is arranged above the ground, and the top of the upper pressure head (3) is in close contact with the bottom surface of the top rubber layer (2), the reset component (4) and the N piezoelectric components (5) are all arranged between the upper pressure head (3) and the bottom plate (6). ), the bottom end of the reset component (4) is fixed at the center of the top of the bottom plate (6), the top end of the reset component (4) is fixed at the center of the bottom of the upper pressure head (3), N piezoelectric components (5) are equidistantly arranged around the outside of the reset component (4) in the circumferential direction, the bottom end of each piezoelectric component (5) is fixedly connected to the top of the bottom plate (6), the top end of each piezoelectric component (5) is fixedly connected to the bottom of the upper pressure head (3), and each piezoelectric component (5) is connected to the energy storage device via a wire.

3. The piezoelectric energy harvesting device used in a traveling path according to claim 2, characterized in that: The top of the upper pressure head (3) is arranged as an arc-shaped surface.

4. A piezoelectric energy harvesting device used in a traveling path according to claim 2 or 3, characterized in that: The reset assembly (4) comprises a connecting column (41) and a reset spring (42); the connecting column (41) is arranged between the upper pressure head (3) and the bottom plate (6) in the vertical direction, and the top end of the connecting column (41) is fixedly connected to the bottom center of the upper pressure head (3); the reset spring (42) is arranged below the connecting column (41) in the vertical direction, and the axis of the reset spring (42) is arranged colinearly with the axis of the connecting column (41); the top end of the reset spring (42) is fixedly connected to the bottom end of the connecting column (41), and the bottom end of the reset spring (42) is fixedly connected to the top center of the bottom plate (6).

5. A piezoelectric energy harvesting device used in a traveling path according to claim 2 or 4, characterized in that: The piezoelectric assembly (5) comprises a guide sleeve (51), a guide column (52), a support column (55), a mounting frame (56), a piezoelectric sheet (57) and a pressure hammer. The guide sleeve (51) is arranged on the top of the base plate (6) in the vertical direction, and the bottom end of the guide sleeve (51) is fixedly connected to the top of the base plate (6). The support column (55) is arranged in the guide sleeve (51), and the axis of the support column (55) is arranged colinearly with the axis of the guide sleeve (51). The bottom end of the support column (55) is fixedly connected to the top of the base plate (6). The mounting frame (56) is fixed on the top of the support column (55). The piezoelectric sheet (57) is arranged on the mounting frame. The piezoelectric sheet (57) is detachably connected to the mounting frame (56), the piezoelectric sheet (57) is connected to the energy storage device through a wire, the guide column (52) is arranged at the bottom of the upper pressure head (3) in the vertical direction, and the axis of the guide column (52) is arranged colinearly with the axis of the guide sleeve (51), the top of the guide column (52) is fixedly connected to the bottom of the upper pressure head (3), the bottom end of the guide column (52) is inserted into the guide sleeve (51), and a sliding gap is provided between the guide column (52) and the guide sleeve (51), and a pressure hammer part is fixedly connected to the bottom end of the guide column (52), and the pressure hammer part and the piezoelectric sheet (57) are arranged correspondingly up and down.

6. The piezoelectric energy harvesting device used in a traveling path according to claim 5, characterized in that: The pressure hammer part comprises a pressure hammer mounting seat and a pressure hammer (54). The pressure hammer mounting seat is fixedly connected to the bottom end of the guide column (52). The pressure hammer (54) is installed in the pressure hammer mounting seat. The pressure hammer (54) and the piezoelectric sheet (57) are arranged correspondingly up and down.

7. The piezoelectric energy harvesting device used in a traveling path according to claim 5, characterized in that: The pressure hammer part includes a buffer spring (53), a pressure hammer mounting seat and a pressure hammer (54). The buffer spring (53) is arranged at the bottom end of the guide column (52) in the vertical direction, and the top end of the buffer spring (53) is fixedly connected to the bottom end of the guide column (52). The pressure hammer mounting seat is fixedly connected to the bottom end of the buffer spring (53). The pressure hammer (54) is installed in the pressure hammer mounting seat, and the pressure hammer (54) and the piezoelectric sheet (57) are arranged correspondingly up and down.

8. The piezoelectric energy harvesting device used in a traveling path according to claim 2, characterized in that: The value range of N is 3 to 6.

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