Hydraulic piezoelectric power generation damping device of track

Abstract

The invention discloses a hydraulic piezoelectric power generation damping device for a track, and belongs to the technical field of track traffic, a liquid storage cylinder is arranged in a shell, and the bottom of the shell is connected with a lower bearing plate; the lower surface of the upper bearing plate is connected with one ends of a plurality of vibration reduction connecting rods, the other ends of the vibration reduction connecting rods are connected with one ends of a plurality of vibration reduction springs respectively, and the other ends of the vibration reduction springs are connected with the bottom of the shell. The upper bearing plate is connected with the driving shaft, and the free end of the driving shaft penetrates through the damping pore plate and is connected with the main piston; the main piston is connected with the piezoelectric assembly, and the piezoelectric assembly is connected with the bottom of the liquid storage cylinder through the auxiliary vibration reduction piece. Vibration reduction of the train track can be achieved, energy recovery can also be taken into consideration, vibration generated by train running on the track and impact energy carried by vibration reduction liquid repeatedly flowing through the damping pore plate in the hydraulic type vibration reducer are utilized, the mechanical energy is converted into electric energy through the piezoelectric material, and the electric energy is converted into electric energy through the piezoelectric material. And the electric energy is stored in a capacitor or directly supplied to low-power electric appliances along the railway.

Description

Technical Field

[0001] The invention belongs to the technical field of rail transportation, and in particular relates to a hydraulic piezoelectric power generation vibration reduction device for a rail. Background Art

[0002] With the acceleration of global urbanization and the continuous growth of transportation demand, rail transit has become increasingly important as an efficient and environmentally friendly means of transportation. However, rail transit systems face many challenges in actual operation, one of which is the vibration problem. The vibration generated during train travel not only affects the comfort of passengers, but may also damage the track structure and its surrounding facilities, increase maintenance costs and shorten service life. Traditional rail vibration reduction methods mainly include the use of mechanical components such as rubber pads and springs to absorb and disperse vibration energy. These methods can alleviate the vibration problem to a certain extent, but lack an energy recovery mechanism and cannot convert vibration energy into usable resources. Summary of the invention

[0003] The purpose of the present invention is to provide a hydraulic piezoelectric power generation vibration reduction device for rails in view of the above-mentioned deficiencies in the prior art, so as to solve the problem that the prior art cannot take into account both train vibration reduction and energy recovery at the same time.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A hydraulic piezoelectric power generation vibration reduction device for a rail, comprising an upper pressure plate, a shell and a lower pressure plate; a fluid storage cylinder is arranged in the shell, and the bottom of the shell is connected to the lower pressure plate; the lower surface of the upper pressure plate is connected to one end of a plurality of vibration reduction connecting rods, and the other ends of the plurality of vibration reduction connecting rods are respectively connected to one end of a plurality of vibration reduction springs through limit blocks, and the other ends of the vibration reduction springs are connected to the bottom of the shell; the center position of the lower surface of the upper pressure plate is connected to a drive shaft, and the free end of the drive shaft passes through a damping orifice plate in the fluid storage cylinder and is connected to a main piston; the main piston is connected to a piezoelectric assembly, and the piezoelectric assembly is connected to the bottom of the fluid storage cylinder through an auxiliary vibration reduction component.

[0006] Furthermore, a certain amount of vibration damping fluid is contained in the fluid storage cylinder.

[0007] Furthermore, the plurality of damping springs are arranged in a spring cavity on the shell, and the spring cavity is located at the periphery of the liquid storage cylinder.

[0008] Furthermore, the piezoelectric assembly includes an upper piezoelectric sheet and a lower piezoelectric sheet; the upper piezoelectric sheet and the lower piezoelectric sheet are respectively mounted on the upper and lower sides of the substrate by fixing bolts; and the upper piezoelectric sheet is connected to the main piston.

[0009] Furthermore, the auxiliary vibration-damping component is an auxiliary vibration-damping spring; one end of the auxiliary vibration-damping spring is connected to the base plate, and the other end thereof is connected to the bottom of the liquid storage cylinder.

[0010] Furthermore, insulating sealing rubber rings are installed at the connections between the drive shaft and the housing, and between the drive shaft and the liquid storage cylinder.

[0011] Furthermore, the edge of the damping orifice plate is connected to the insulating layer of the inner wall of the liquid storage cylinder.

[0012] Furthermore, a large circular hole is arranged at the center of the damping orifice plate for the driving shaft to pass through and move up and down; a plurality of small circular holes are arranged outside the large circular hole for the vibration damping fluid to pass through the damping orifice plate.

[0013] Furthermore, in the cavity reserved on both sides below the rails in the track plate, at least one hydraulic piezoelectric power generation vibration reduction device is evenly spaced along the length direction of the cavity; two adjacent hydraulic piezoelectric power generation vibration reduction devices are connected by a wire.

[0014] Furthermore, a plurality of the hydraulic piezoelectric power generation vibration reduction devices are connected in series or in parallel.

[0015] The hydraulic piezoelectric power generation vibration reduction device for the track provided by the present invention has the following beneficial effects:

[0016] 1. The present invention can achieve vibration reduction of train tracks and also take into account energy recovery. It utilizes the vibration generated by the train running on the track and the impact energy carried by the damping fluid in the hydraulic shock absorber when it repeatedly flows through the damping orifice plate. This part of mechanical energy is converted into electrical energy through piezoelectric materials and stored in capacitors or directly supplied to low-power electrical appliances along the railway.

[0017] 2. The present invention adopts a dual spring damping mechanism combining a main damping spring with an auxiliary damping spring, which can more effectively disperse and absorb the vibration energy from the track. At the same time, it uses the incompressibility and fluidity of the damping fluid in the reservoir to transmit and absorb the vibration energy, so that the damping effect is smooth, stable, and widely covers different frequencies, thereby improving energy utilization efficiency.

[0018] 3. The present invention uses the piezoelectric effect to generate electricity and designs a reciprocating mechanism (such as a drive shaft, a main piston, etc.), so that the upper piezoelectric sheet and the lower piezoelectric sheet can produce continuous deformation under the action of vibration, thereby outputting stable electrical energy.

[0019] 4. The use of the insulating sealing rubber ring of the present invention ensures the sealing of the hydraulic system, prevents the leakage of the damping fluid and other problems, and enhances the reliability and durability of the device.

[0020] 5. A single or multiple power generation devices of the present invention can be conveniently arranged in the cavity reserved in the roadbed plate under the track, and two adjacent power generation devices can be connected by wires, which is convenient for installation and adjustment according to actual needs. It also supports series or parallel connection of multiple devices to meet the power requirements of different scenarios and different equipment.

[0021] 6. The present invention takes into account the characteristics of the rail transit system's huge infrastructure and frequent operational activities, where the vibration energy resources generated are very abundant and easy to obtain. The device reduces dependence on and consumption of traditional energy by converting vibration energy into electrical energy and storing it or directly supplying it to low-power electrical appliances along the railway. While achieving energy recovery, it also has high economic and social benefits, helps to reduce carbon emissions and alleviate environmental pollution, and also provides new ideas and technical support for the green and sustainable development of the rail transit system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the hydraulic piezoelectric power generation vibration reduction device of the track of the present invention.

[0023] Figure 2 The figure is a schematic diagram of the installation position structure of the hydraulic piezoelectric power generation vibration reduction device of the track of the present invention.

[0024] Among them, 1. upper pressure plate; 2. driving shaft; 3. vibration-damping connecting rod; 4. damping orifice plate; 5. limit block; 6. insulating layer; 7. auxiliary vibration-damping spring; 8. liquid storage cylinder; 9. main vibration-damping spring; 10. shell; 11. lower pressure plate; 12. sealing rubber ring; 13. main piston; 14. upper piezoelectric sheet; 15. substrate; 16. lower piezoelectric sheet; 17. fixing bolt; 18. low-power electrical appliances; 19. wire; 20. rail; 21. track plate; 22. hydraulic piezoelectric power generation vibration reduction device. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0026] Example 1

[0027] The hydraulic piezoelectric power generation vibration reduction device 22 of the rail of the present embodiment can effectively disperse and absorb the vibration energy from the rail, and convert the absorbed vibration energy into electrical energy for recovery. While realizing energy recovery, it also has high economic and social benefits, helps to reduce carbon emissions and alleviate environmental pollution problems, and also provides new ideas and technical support for the green and sustainable development of rail transportation systems. Figure 1 , which specifically include:

[0028] Upper pressure plate 1, drive shaft 2, damping connecting rod 3, damping orifice plate 4, limit block 5, insulating layer 6, auxiliary damping spring 7, liquid storage cylinder 8, main damping spring 9, shell 10, lower pressure plate 11, sealing rubber ring 12, main piston 13, upper piezoelectric sheet 14, substrate 15, lower piezoelectric sheet 16 and fixing bolts 17.

[0029] Specifically, in this embodiment, a liquid storage cylinder 8 is provided in the housing 10, and a certain amount of vibration-damping fluid is filled in the liquid storage cylinder 8. The specific capacity of the vibration-damping fluid can be determined according to actual needs, and this embodiment does not limit it here.

[0030] The bottom of the shell 10 is connected to the lower pressure plate 11; the lower surface of the upper pressure plate 1 is connected to one end of a plurality of damping connecting rods 3, the other ends of the plurality of damping connecting rods 3 are respectively connected to one end of a plurality of damping springs through limit blocks 5, and the other ends of the damping springs are connected to the bottom of the shell 10; the center position of the lower surface of the upper pressure plate 1 is connected to the drive shaft 2, the free end of the drive shaft 2 passes through the damping orifice plate 4 located in the fluid storage cylinder 8 and is connected to the main piston 13, the main piston 13 is connected to the piezoelectric component, and the piezoelectric component is connected to the bottom of the fluid storage cylinder 8 through an auxiliary damping component.

[0031] The present embodiment does not limit the specific shape of the shell 10, and the shape can be designed according to the actual setting scene and requirements. As a preferred embodiment of the present embodiment, the shell 10 of the present embodiment can be set to a cylindrical, rectangular or cube shape.

[0032] A spring cavity is provided in the housing 10 and is disposed at the periphery of the liquid storage cylinder 8 for fixing the damping spring and also for limiting the lateral movement of the damping spring.

[0033] As a preferred embodiment of this embodiment, in order to convert the absorbed vibration energy into electrical energy for recovery, the piezoelectric component of this embodiment includes an upper piezoelectric sheet 14 and a lower piezoelectric sheet 16. The upper piezoelectric sheet 14 and the lower piezoelectric sheet 16 are respectively installed on the upper and lower sides of the substrate 15 by fixing bolts 17, and the upper piezoelectric sheet 14 is connected to the main piston 13.

[0034] As a preference of this embodiment, the auxiliary damping member is preferably an auxiliary damping spring 7 , one end of the auxiliary damping spring 7 is connected to the base plate 15 , and the other end thereof is connected to the bottom of the liquid storage cylinder 8 .

[0035] In order to ensure the sealing of the hydraulic system of this embodiment and prevent the leakage of the damping fluid, insulating sealing rubber rings 12 are installed at the connections between the drive shaft 2 and the housing 10 and between the drive shaft 2 and the liquid storage cylinder 8 in this embodiment.

[0036] The edge of the damping orifice 4 is connected to the insulating layer 6 of the inner wall of the liquid storage cylinder 8. A large circular hole is set in the center of the damping orifice 4 for the drive shaft 2 to pass through and move up and down. A plurality of small circular holes are set on the outside of the large circular hole for the damping fluid to pass through the damping orifice 4.

[0037] refer to Figure 2 The specific location of the hydraulic piezoelectric power generation vibration reduction device 22 in this embodiment is:

[0038] In the cavity reserved on both sides below the rail 20 in the track plate 21 , at least one hydraulic piezoelectric power generation vibration reduction device 22 is evenly spaced along the length direction of the cavity, and two adjacent hydraulic piezoelectric power generation vibration reduction devices 22 are connected by a wire 19 .

[0039] A plurality of hydraulic piezoelectric generating vibration reduction devices 22 are connected in series or in parallel, and the electric energy output by the hydraulic piezoelectric generating vibration reduction devices 22 is stored in a capacitor after passing through a rectification and voltage regulation circuit or is directly supplied to low-power electrical appliances 18 along the railway.

[0040] refer to Figure 2 As a preferred embodiment of the present invention, two can be placed on the left and right sides of the rail 20 below the rail 20 in the track plate 21, and multiple can be placed on one side of the rail 20 in series and in parallel to meet the power requirements of different scenes and different equipment.

[0041] The working principle of the hydraulic piezoelectric power generation vibration reduction device of a track in this embodiment is:

[0042] In actual use, multiple hydraulic piezoelectric power generation vibration reduction devices 22 are connected in parallel and laid in the track plate 21 along one side of the rail 20. The vibration energy of the train passing through the rail 20 and the track plate 21 is transmitted to the main vibration reduction spring 9 through the upper pressure plate 1 through the vibration reduction connecting rod 3 to achieve primary vibration reduction. The upper pressure plate 1 drives the upper piezoelectric sheet 14, the base plate 15 and the lower piezoelectric sheet 16 connected to the main piston 13 to move downward through the driving shaft 2, causing the vibration reduction fluid in the liquid storage cylinder 8 to flow through the damping orifice plate 4, and at the same time transmits the vibration energy to the auxiliary vibration reduction spring 9. Spring 7 realizes secondary vibration reduction, and the impact energy carried and the upward elastic force generated by the auxiliary vibration reduction spring 7 cause the upper piezoelectric sheet 14 and the lower piezoelectric sheet 16 to generate deformation and electricity. Then, the main vibration reduction spring 9 and the auxiliary vibration reduction spring 7 are reset upward, so that the upper pressure plate 1 returns to its original position, driving the drive shaft 2 and the main piston 13 to move upward, realizing the reciprocating electricity generation between the upper piezoelectric sheet 14 and the lower piezoelectric sheet 16, thereby converting mechanical energy into electrical energy. The electrical energy generated by the hydraulic piezoelectric generating vibration reduction device 22 is directly supplied to the low-power electrical appliances 18 along the railway through the wire 19.

[0043] Although the specific implementation of the invention is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. A hydraulic piezoelectric power generation vibration reduction device for a track, characterized in that: It includes an upper pressure plate, a shell and a lower pressure plate; a fluid storage cylinder is arranged in the shell, and the bottom of the shell is connected to the lower pressure plate; the lower surface of the upper pressure plate is connected to one end of a plurality of damping connecting rods, and the other ends of the plurality of damping connecting rods are respectively connected to one end of a plurality of damping springs through limit blocks, and the other end of the damping spring is connected to the bottom of the shell; the center position of the lower surface of the upper pressure plate is connected to the driving shaft, and the free end of the driving shaft passes through the damping orifice plate in the fluid storage cylinder and is connected to the main piston; the main piston is connected to the piezoelectric component, and the piezoelectric component is connected to the bottom of the fluid storage cylinder through an auxiliary damping component.

2. The hydraulic piezoelectric power generation vibration reduction device for rails according to claim 1, characterized in that: The liquid storage cylinder contains a plurality of vibration damping fluids.

3. The hydraulic piezoelectric generating vibration reduction device for rail according to claim 1, characterized in that: A plurality of the damping springs are arranged in a spring cavity on the shell, and the spring cavity is located at the periphery of the liquid storage cylinder.

4. The hydraulic piezoelectric generating vibration reduction device for rails according to claim 1, characterized in that: The piezoelectric assembly comprises an upper piezoelectric sheet and a lower piezoelectric sheet; the upper piezoelectric sheet and the lower piezoelectric sheet are respectively mounted on the upper and lower sides of the substrate through fixing bolts; the upper piezoelectric sheet is connected to the main piston.

5. The hydraulic piezoelectric generating vibration reduction device for rails according to claim 4, characterized in that: The auxiliary vibration-damping component is an auxiliary vibration-damping spring; one end of the auxiliary vibration-damping spring is connected to the base plate, and the other end is connected to the bottom of the liquid storage cylinder.

6. The hydraulic piezoelectric generating vibration reduction device for rails according to claim 1, characterized in that: Insulating sealing rubber rings are installed at the connection points between the driving shaft and the housing, and between the driving shaft and the liquid storage cylinder.

7. The hydraulic piezoelectric generating vibration reduction device for rails according to claim 1, characterized in that: The edge of the damping orifice plate is connected to the insulating layer of the inner wall of the liquid storage cylinder.

8. The hydraulic piezoelectric generating vibration reduction device for rails according to claim 1, characterized in that: The center of the damping orifice plate is provided with a large circular hole for the driving shaft to pass through and move up and down; the outer side of the large circular hole is provided with a plurality of small circular holes for the vibration damping fluid to pass through the damping orifice plate.

9. The hydraulic piezoelectric power generation vibration reduction device for rails according to any one of claims 1 to 8, characterized in that: In the cavity reserved on both sides below the rails in the track plate, at least one hydraulic piezoelectric power generation vibration reduction device is evenly spaced along the length direction of the cavity; two adjacent hydraulic piezoelectric power generation vibration reduction devices are connected by wires.

10. The hydraulic piezoelectric power generation vibration reduction device for rails according to any one of claims 1 to 8, characterized in that: A plurality of the hydraulic piezoelectric power generation vibration reduction devices are connected in series or in parallel.

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