Self-power-generation device and self-power-generation type landslide displacement sensor

Abstract

The invention discloses a self-power-generation device and a self-power-generation type landslide displacement sensor, and relates to the technical field of landslide monitoring. The self-power-generation device comprises a shell, a rotation driving structure and a friction nanometer generator; the rotary driving structure is installed in the shell and comprises a main shaft, a sleeve, a reel and a hub, the reel is tightly connected with the opposite end face of the sleeve, and a stay wire is wound on the reel; the friction nanometer generator comprises a first conductive friction layer and a second conductive friction layer, one of the first conductive friction layer and the second conductive friction layer is arranged on the side, opposite to the shell, of the hub and arranged in the circumferential direction of the hub, the other one of the first conductive friction layer and the second conductive friction layer is arranged on the shell, and the first conductive friction layer and the second conductive friction layer are both connected with a load. The reel is suitable for driving the hub to rotate, so that relative friction electrification occurs between the first conductive friction layer and the second conductive friction layer. The self-power-generation type landslide displacement sensor performs self-power-supply work when measuring landslide displacement.

Description

Technical Field

[0001] The present invention relates to the technical field of generators, and more particularly to a self-generating device and a self-generating landslide displacement sensor. Background Art

[0002] A landslide is a geological disaster in which soil, rock or other surface materials slide rapidly down the slope of a mountain due to natural or human factors under the action of gravity.

[0003] When a landslide occurs, the slope material loses stability, causing large areas of soil and rocks to move rapidly, which usually brings huge destructive power, seriously threatening the safety of human life and property as well as the ecological environment, causing personal injury and significant economic and property losses.

[0004] In order to monitor landslides, various types of landslide sensors have been designed in the prior art, such as rainfall sensors that monitor landslide changes by measuring rainfall; soil pressure monitoring sensors that monitor soil pressure; and mountain displacement monitoring sensors that measure surface displacement.

[0005] However, the above-mentioned traditional sensors require an external power supply to operate. Summary of the invention

[0006] In view of this, an object of the present invention is to provide a self-generating device and a self-generating landslide displacement sensor to solve the technical problem that traditional sensors need external power supply to work.

[0007] To achieve the above objectives, the first objective of the present invention is to provide a self-generating device for being arranged on a landslide displacement sensor, the self-generating device comprising: shell; A rotary drive structure is installed in the housing, and the rotary drive structure includes a main shaft transversely passing through the housing, a sleeve and a winding frame sleeved on the main shaft, and a hub sleeved on the sleeve, the winding frame is tightly connected to the end faces opposite to the sleeve, and a pull wire is wound on the winding frame; A friction nanogenerator, comprising a first conductive friction layer and a second conductive friction layer, wherein one of the first conductive friction layer and the second conductive friction layer is arranged on a side of the hub opposite to the housing and arranged along the circumference of the hub, and the other is arranged on the housing, and both the first conductive friction layer and the second conductive friction layer are used to be connected to a load; The winding frame is suitable for driving the sleeve and the hub to rotate when the pulling wire is driven, thereby causing relative friction electrification between the first conductive friction layer and the second conductive friction layer.

[0008] Preferably, the first conductive friction layer is a friction plate, and a plurality of the friction plates are uniformly adhered to the outer circumferential surface of the wheel hub.

[0009] Preferably, the second conductive friction layer is a friction strip, the friction strip is fixed on the bottom inner wall surface of the shell, and a layer of copper sheet is adhered to the upper surface of the friction strip.

[0010] Preferably, it also includes: A first wire, one end of which is connected to the friction plate, and the other end of which is connected to one end of the load; A second wire has one end connected to the copper sheet on the friction strip, and the other end connected to the other end of the load.

[0011] Preferably, the friction plate is any one of a Kapton film, an Upilex film and a polyimide film.

[0012] Preferably, the rotary drive structure further comprises: A rolling bearing is passed through the main shaft and is located inside the inner wall of the sleeve; A bearing retaining ring is mounted on the sleeve, and the bearing retaining ring abuts against the opposite end surface of the rolling bearing.

[0013] Preferably, it further comprises a packaging cover arranged on the outer shell, and the packaging cover is provided with a wire outlet hole suitable for leading out the pull wire on the winding frame, and the pull wire passes through the wire outlet hole and is buried in the mountain.

[0014] Preferably, the load is an electric energy storage device, and the first conductive friction layer and the second conductive friction layer are both connected to the electric energy storage device.

[0015] Preferably, the number of the friction plates is 30-250.

[0016] The second object of the present invention is to provide a self-generating landslide displacement sensor, which is provided with the self-generating device as described above.

[0017] Compared with the prior art, the present invention has the following advantages and effects: The self-generating device in the present invention is used to be arranged on the landslide displacement sensor, and the self-generating device is composed of a housing, a rotating drive structure and a friction nanogenerator, wherein the self-rotating drive structure is composed of a main shaft, a sleeve, a winding frame and a hub, and these components work together so that the sleeve and the hub can rotate under the driving action of the pull wire, and the first conductive friction layer and the second conductive friction layer are respectively arranged on the hub and the housing. When the hub rotates, this rotational movement causes relative movement between the first conductive friction layer and the second conductive friction layer, thereby generating friction charges and then generating electrical energy. When the self-generating device is used on the landslide displacement sensor, when the mountain soil undergoes landslide displacement, the pull wire will be pulled, thereby making the rotating drive structure work. It can collect mechanical energy from the environment, such as vibration or displacement changes on the landslide displacement sensor, and convert these mechanical energies into electrical energy, provide the required power for the landslide displacement sensor, realize the self-powered mode without external power supply, and provide a self-powered solution for monitoring equipment such as landslide displacement sensors, with high efficiency, reliability, strong environmental adaptability and other technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a self-powered sensor in an embodiment of the present invention; Figure 2 It is a schematic diagram of the main structure of the self-powered sensor in the embodiment of the present invention after removing the packaging cover; Figure 3 It is a schematic diagram of the structure of the horizontal sliding support mechanism in another direction in an embodiment of the present invention; Figure 4 It is a side view structural schematic diagram of a self-falling dynamic penetration test device in an embodiment of the present invention; Figure 5 Schematic diagram of the three-dimensional structure of the experimental framework in an embodiment of the present invention.

[0019] Description of reference numerals: 1-housing; 2-packaging cover; 3-protection head; 4-wire outlet hole; 5-hub; 6-winding frame; 7-spindle; 8-friction plate; 9-friction strip; 10-sleeve; 11-bearing retaining ring; 12-rolling bearing. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figure 1-5 As shown, an embodiment of the present invention provides a self-generating device for being arranged on a landslide displacement sensor, wherein the self-generating device comprises a housing 1, a rotating driving structure and a friction nanogenerator, wherein: The rotary drive structure is installed in the outer shell 1, and the rotary drive structure includes a main shaft 7, a sleeve 10, a winding frame 6 and a hub 5. The main shaft 7 is transversely penetrated on the outer shell 1, the sleeve 10 and the winding frame 6 are sleeved on the main shaft 7, the hub 5 is sleeved on the sleeve 10, the winding frame 6 and the sleeve 10 have opposite end faces tightly connected, and a pull wire is wound on the winding frame 6.

[0023] The friction nanogenerator includes a first conductive friction layer and a second conductive friction layer. One of the first conductive friction layer and the second conductive friction layer is arranged on the side of the hub 5 opposite to the shell 1 and is arranged along the circumference of the hub 5, and the other is arranged on the shell 1. The first conductive friction layer and the second conductive friction layer are both used to be connected to the load.

[0024] The winding frame 6 is suitable for driving the sleeve 10 and the hub 5 to rotate when the pulling wire is driven, thereby causing relative friction electrification between the first conductive friction layer and the second conductive friction layer.

[0025] Specifically in this embodiment, the rotary drive structure is composed of a main shaft 7, a sleeve 10, a winding frame 6 and a hub 5. These components work together so that when the pull wire is driven, the sleeve 10 and the hub 5 can rotate, and the first conductive friction layer and the second conductive friction layer are respectively arranged on the hub 5 and the outer shell 1. When the hub 5 rotates, this rotational motion will cause relative motion between the first conductive friction layer and the second conductive friction layer, thereby generating friction charges and then generating electrical energy.

[0026] In addition, the main shaft 7 in this embodiment supports the rotation of the hub 5. At the same time, the main shaft 7 is slightly longer than the width of the outer shell 1. The main shaft 7 is fixed at the center of the outer shell 1, and the protective head 3 is used to protect the outer end of the main shaft 7.

[0027] When the self-generating device of the present invention is used on the landslide displacement sensor, when the mountain soil undergoes landslide displacement, the pull wire will be pulled, thereby making the rotary drive structure work. It can collect mechanical energy from the environment, such as vibration or displacement changes on the landslide displacement sensor, and convert these mechanical energies into electrical energy to provide the required power for the landslide displacement sensor, thus realizing a self-powered mode without the need for an external power supply.

[0028] Therefore, the self-generating device in the embodiment of the present invention utilizes the principle of the friction nanogenerator and realizes the conversion of mechanical energy into electrical energy through a rotating drive structure, providing a self-powered solution for monitoring equipment such as landslide displacement sensors, and has technical effects such as high efficiency, reliability, and strong environmental adaptability.

[0029] Further, please refer to Figures 2 and 3. Based on the triboelectric effect, when the surfaces of two different materials contact and separate from each other, charges of opposite polarity will be generated on the contact surface. In the embodiment of the present invention, the first conductive friction layer is preferably a friction plate 8, and a plurality of friction plates 8 are uniformly adhered to the outer circumferential surface of the hub 5. When the hub 5 rotates, the friction plate 8 and the second conductive friction layer contact and separate, resulting in charge transfer, thereby generating electrical energy.

[0030] In addition, since the contact and separation between the friction plate 8 and the second conductive friction layer are periodic, a periodic electric energy output can be generated.

[0031] Further, please refer to 2 and 3, the second conductive friction layer is a friction strip 9, which is fixed on the bottom inner wall surface of the housing 1, and a layer of copper sheet is adhered to the upper surface of the friction strip 9, and the contact and separation between the copper sheet and the friction plate 8 will generate electric charge, thereby generating electrical energy. This setting utilizes the triboelectric effect, that is, different materials will transfer electric charge during the contact and separation process, resulting in the surface of the material being charged.

[0032] Furthermore, in a specific embodiment of the present invention, the self-generating device further comprises a first wire and a second wire, wherein: one end of the first wire is connected to the friction plate 8, and the other end is connected to one end of a load (not shown in the figure). One end of the second wire is connected to the copper sheet on the friction strip 9, and the other end is connected to the other end of the load.

[0033] Specifically, the self-generating device forms a closed circuit by connecting the first wire and the second wire, so that the charge generated by friction electrification can flow in the circuit, provide electrical energy to the load, and realize the power transmission between the friction nanogenerator and the load.

[0034] Furthermore, in a specific embodiment of the present invention, the friction plate 8 is any one of a Kapton film, an Upilex film and a polyimide film.

[0035] It should be noted that Kapton film is a polyimide film with high temperature resistance, chemical corrosion resistance and electrical insulation properties. In the friction nanogenerator, Kapton film can be used as a negative friction material layer and used in conjunction with positive friction layers such as elastic silicone rubber substrates. Due to the high insulation and low dielectric loss of Kapton film, the charge capture ability of the friction nanogenerator can be effectively enhanced to improve the output performance.

[0036] Upilex film is a super heat-resistant polyimide film with dimensional stability, low water absorption and extremely high chemical resistance. In the triboelectric nanogenerator, the high heat resistance and chemical stability of Upilex film enable it to work stably in harsh environments, while its low water absorption helps maintain the long-term performance and reliability of the triboelectric nanogenerator.

[0037] Polyimide film is widely used in friction nanogenerators due to its high temperature resistance, high mechanical properties and excellent electrical insulation properties. It can provide excellent triboelectric properties and wear resistance, thereby improving the energy collection efficiency of friction nanogenerators.

[0038] Further, referring to Figures 2 and 3, in order to improve the mechanical efficiency and stability of the self-generating device, the rotary drive structure in the embodiment of the present invention further includes a bearing retaining ring 11 and a rolling bearing 12, wherein: The rolling bearing 12 is passed through the main shaft 7 and is located inside the inner wall of the sleeve 10, and is used to reduce the friction between the main shaft 7 and the sleeve 10, and improve the smoothness and efficiency of the rotation. In addition, the rolling bearing 12 supports the load through rolling elements (such as balls or rollers), reduces friction, and makes the rotation more flexible and durable. The bearing retaining ring 11 is installed on the sleeve 10, and the bearing retaining ring 11 abuts against the opposite end face of the rolling bearing 12, and is used to fix and protect the rolling bearing 12, prevent the rolling bearing 12 from axial or radial displacement in the sleeve 10, and ensure the correct positioning and stability of the bearing.

[0039] Further, please refer to Figure 1, the self-generating device also includes a packaging cover 2 covered on the outer shell 1, and the packaging cover 2 is provided with a wire outlet hole 4 suitable for leading out the pull wire on the winding frame 6, and the pull wire passes through the wire outlet hole 4 and is buried in the mountain.

[0040] The advantage of such a configuration is that the packaging cover 2 is used to protect the components inside the self-generating device, prevent the external environment (such as dust, moisture, impact, etc.) from damaging the device, and improve the stability and durability of the device.

[0041] The packaging cover 2 is provided with a wire outlet hole 4, which is specially provided for leading out the wire on the winding frame 6. The wire outlet hole 4 ensures that the wire can be smoothly led out from the inside of the device, while protecting the wire from damage by external factors.

[0042] Furthermore, in a specific embodiment of the present invention, the load is an electric energy storage device, and the first conductive friction layer and the second conductive friction layer are both connected to the electric energy storage device.

[0043] As a result, charges are generated through the contact-separation process between the first conductive friction layer (friction plate 8) and the second conductive friction layer (copper plate on the friction strip 9), and these charges flow in the external circuit to form current to charge the energy storage device.

[0044] Furthermore, in a specific embodiment of the present invention, the number of friction plates 8 is 30-250.

[0045] Specifically, the number of friction plates 8 can be pasted according to the actual demand. For example, when 100 Kapton friction plates are installed on the circumference of the hub 5 in this embodiment, the pull rope is pulled 100mm, and the hub 5 moves one circle. When 100 electric pulse signals are generated, it indicates that the displacement is 100mm, and the accuracy is 1mm. The accuracy can also be changed by increasing or decreasing the number of Kapton friction plates as needed. For example, when 200 Kapton friction plates are installed, the accuracy is 0.5mm, and when 50 Kapton friction plates are installed, the accuracy is 2mm.

[0046] In another embodiment of the present invention, a self-generating landslide displacement sensor is provided. The self-generating landslide displacement sensor is provided with the self-generating device as described above.

[0047] See also Figure 5 As shown in the figure, the specific working principle of the self-generating landslide displacement sensor is as follows: When the sensor is in the initial state, the pull rope is wound on the winding frame 6, and one end of the pull rope extends out from the outlet hole 4 and is buried in the mountain.

[0048] like Figure 5 As shown in (a), when the mountain soil undergoes landslide displacement, the pull rope is pulled.

[0049] like Figure 5 As shown in (b), under the action of friction, the pull rope drives the winding frame 6 to rotate. Since the hub 5, sleeve 10 and winding frame 6 are relatively fixed, the hub 5 also rotates under the action of the rolling bearing 12. At this time, the friction plate 8 on the hub 5 also rotates, and rubs against the copper plate on the friction strip 9 to generate a pulse electrical signal.

[0050] When the displacement is large, such as Figure 5 (c) Figure 5 As shown in (d), as the rotation angle of the wheel hub 5 increases, the friction between the friction plate 8 and the friction strip 9 also increases, and the number of pulse electrical signals generated also increases.

[0051] Compared with the traditional landslide displacement sensor, the self-generating landslide displacement sensor can realize self-power supply, does not need external power supply, and is more suitable for actual working conditions. In addition, the measurement accuracy can be changed by adding or reducing friction plates, and the structure is simple and reliable.

[0052] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A self-generating device, characterized in that: Used to be set on the landslide displacement sensor, including: shell; A rotary drive structure is installed in the housing, and the rotary drive structure includes a main shaft transversely passing through the housing, a sleeve and a winding frame sleeved on the main shaft, and a hub sleeved on the sleeve, the winding frame is tightly connected to the end faces opposite to the sleeve, and a pull wire is wound on the winding frame; A friction nanogenerator, comprising a first conductive friction layer and a second conductive friction layer, wherein one of the first conductive friction layer and the second conductive friction layer is arranged on a side of the hub opposite to the housing and arranged along the circumference of the hub, and the other is arranged on the housing, and both the first conductive friction layer and the second conductive friction layer are used to be connected to a load; The winding frame is suitable for driving the sleeve and the hub to rotate when the pulling wire is driven, thereby causing relative friction electrification between the first conductive friction layer and the second conductive friction layer.

2. The self-generating device according to claim 1, characterized in that: The first conductive friction layer is a friction plate, and a plurality of the friction plates are uniformly adhered to the outer circumferential surface of the wheel hub.

3. The self-generating device according to claim 2, characterized in that: The second conductive friction layer is a friction strip, which is fixed on the bottom inner wall surface of the shell, and a layer of copper sheet is adhered to the upper surface of the friction strip.

4. The self-generating device according to claim 3, characterized in that: Also includes: A first wire, one end of which is connected to the friction plate, and the other end of which is connected to one end of the load; A second wire has one end connected to the copper sheet on the friction strip, and the other end connected to the other end of the load.

5. The self-generating device according to claim 2, characterized in that: The friction plate is any one of a Kapton film, an Upilex film and a polyimide film.

6. The self-generating device according to claim 1, characterized in that: The rotary drive structure further comprises: A rolling bearing is passed through the main shaft and is located inside the inner wall of the sleeve; A bearing retaining ring is mounted on the sleeve, and the bearing retaining ring abuts against the opposite end surface of the rolling bearing.

7. The self-generating device according to claim 1, characterized in that: It also includes a packaging cover arranged on the shell, and the packaging cover is provided with a wire outlet hole suitable for leading out the pull wire on the winding frame, and the pull wire passes through the wire outlet hole and is buried in the mountain.

8. The self-generating device according to claim 1, characterized in that: The load is an electric energy storage device, and the first conductive friction layer and the second conductive friction layer are both connected to the electric energy storage device.

9. The self-generating device according to claim 2, characterized in that: The number of the friction plates is 30-250.

10. A self-generating landslide displacement sensor, characterized in that: A self-generating device as described in any one of claims 1 to 9 is provided.

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