A mine use inclination sensor

Abstract

The utility model relates to mine safety monitoring equipment technical field, especially mine dip angle sensor, including installation base, mounting lug plate, elastic suspension frame and core sensing module. Elastic suspension frame includes protection inner shell, elastic part, floating support plate, floating plate and floating part. Elastic part provides axial damping buffer, floating part connects floating support plate and floating plate, and makes core module can float in radial direction. When being impacted, elastic part directly absorbs axial energy, when being subjected to lateral force, floating part acts, on one hand, allows core sensing module to adapt deflection, on the other hand, linkage drive elastic part deformation carries out secondary energy absorption, forms multidimensional collaborative damping. The utility model relates to a kind of mine dip angle sensor, realizes the effective isolation and self-adaptation to complex mine vibration, significantly improves the impact resistance of sensor, measurement accuracy and environmental reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of mine safety monitoring equipment, and in particular to a mine tilt sensor. Background Technology

[0002] In coal mining, tilt sensors play a crucial role, monitoring the posture of hydraulic supports, roadway deformation, and equipment tilt to ensure safe production. These sensors are typically installed in the mining environment, which is characterized by continuous and severe mechanical vibrations and impacts. These vibrations and impacts can easily damage the core measuring components of the sensors or cause signal distortion, severely affecting measurement accuracy and directly threatening the safety of miners.

[0003] Existing vibration-resistant design solutions typically employ single-damping structures or monolithic potting to reduce the impact of external vibrations and shocks on sensors. However, these methods often only provide vibration reduction in a single dimension, lacking effective isolation measures for multi-directional or combined vibrations and shocks. Furthermore, while achieving effective vibration reduction, it is difficult to ensure that the sensor maintains sufficient sensitivity to changes in tilt angle, which is detrimental to practical monitoring applications. Utility Model Content

[0004] This invention solves the problems in related technologies and proposes a mine tilt sensor with an elastic suspension frame that works in conjunction with elastic and floating components. This structure provides the core sensing module with dual protection: axial damping buffering and radial floating adaptive protection.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a mining tilt sensor, including a cylindrical mounting base with the opening facing downward, mounting ear plates respectively disposed on the outer periphery of the closed end of the upper end face of the mounting base, an elastic suspension frame disposed in the mounting base, and a core sensing module fixedly connected to the lower end face of the elastic suspension frame.

[0006] The elastic suspension frame includes a protective inner shell rigidly connected to the top surface of the inner cavity of the mounting base, an elastic element disposed in the inner cavity of the protective inner shell, a floating support plate fixedly disposed on the lower end surface of the elastic element, a floating plate disposed parallel to the floating support plate, and a floating element disposed between the floating plate and the floating support plate. The core sensing module is rigidly connected to the end of the floating plate away from the end connected to the floating support plate.

[0007] This flexible suspension structure provides stable support with a certain degree of cushioning for the core sensing module. When vibration or impact occurs in the mining environment, the elastic component can absorb most of the vibration energy, reducing the impact on the core sensing module and ensuring its normal operation. The floating component further enhances the floating capability of the core sensing module within a certain range, enabling it to better adapt to different tilt angle changes.

[0008] As a preferred embodiment, the elastic element includes a sliding sleeve fixedly connected to the inner cavity of the protective inner shell, a sliding rod slidably connected to the sliding sleeve, and a damping spring disposed on the outer periphery of the sliding rod. One end of the damping spring is fixedly connected to the inner cavity of the sliding sleeve, and the other end of the damping spring is fixedly connected to the floating support plate.

[0009] By adopting the above technical solution, the sliding rod can slide flexibly within the sliding sleeve, while the damping spring deforms accordingly based on the displacement of the sliding rod, thus playing a role in buffering and shock absorption. When subjected to external vibration or impact, the sliding rod slides within the sliding sleeve, compressing or stretching the damping spring, converting the vibration energy into the elastic potential energy of the spring, thereby reducing the energy transmitted to the floating support plate and the core sensing module.

[0010] As a preferred embodiment, the floating component includes a rotating shaft fixedly connected to the lower end face of the floating plate, a mounting bracket rotatably connected to both ends of the rotating shaft and fixedly connected to the protective inner shell, mounting seats respectively fixedly disposed on both sides of the rotating shaft, and a floating ring rotatably connected to the mounting seats. The floating ring is interference-fitted with the floating plate, and the floating plate is provided with an arc-shaped groove adapted to the outer circular surface of the floating ring.

[0011] By adopting the above technical solution, when the core sensing module is subjected to external impact, the floating plate causes the rotating shaft to change angle, and the floating ring rotates on the mounting base, allowing the floating plate to float flexibly within a certain range. This floating design enables the core sensing module to better adjust its posture to adapt to tilts of different directions and degrees when facing complex mining environments.

[0012] As a preferred embodiment, the system further includes rotating pins fixedly disposed at both ends of the rotating shaft, a rotating plate connected to the rotating pins via a spline structure, a guide rod fixedly disposed at the other end of the rotating plate, and guide grooves disposed on the outside of the mounting bracket. The guide grooves are configured as semi-circular structures, and the ends of the guide rods can slide within the guide grooves.

[0013] By adopting the above technical solution, when the rotating shaft rotates, the rotating pin drives the rotating plate to rotate. The guide rod on the rotating plate slides under the constraint of the guide groove, thus providing precise guidance for the rotation of the rotating shaft. This ensures that the rotation direction of the rotating shaft meets the design requirements, enabling the core sensing module to adjust its posture more stably and accurately during floating. Simultaneously, this guiding structure also helps enhance the structural stability of the entire elastic suspension frame, preventing positional deviations of the core sensing module due to arbitrary rotation of the rotating shaft, which would affect the measurement accuracy of the mine tilt sensor. Furthermore, the semi-circular design of the guide groove not only meets the rotation requirements of the rotating shaft within a certain range but also limits the rotation angle of the rotating shaft, preventing damage to related components due to excessive rotation angle.

[0014] As a preferred embodiment, a sealed bearing is provided at the connection between the rotating pin and the mounting support, and the sealed bearing is a deep groove ball bearing.

[0015] By adopting the above technical solution, a sealed deep groove ball bearing is installed at the connection between the rotating pin and the mounting support. This ensures the flexibility of the rotating pin during rotation, allowing it to smoothly drive the core sensing module to adjust its posture. Furthermore, the sealed design effectively prevents dust, moisture, and other impurities from the mining environment from entering the sealed bearing, extending its service life and thus ensuring the stability and reliability of the entire elastic suspension structure.

[0016] As a preferred embodiment, the mounting ear plate is provided with mounting holes, which can be used to fix it to other equipment or structures through bolts or other connecting parts.

[0017] By adopting the above technical solution, the robustness and stability of the sensor installation are ensured. Furthermore, the design of the mounting lugs allows for flexible adjustment of the sensor's installation position according to actual needs, adapting to different mining environments.

[0018] As a preferred embodiment, the system also includes a flexible thermally conductive potting compound disposed between the inner wall of the mounting base and the protective inner shell, wherein the flexible thermally conductive potting compound is silicone rubber or polyurethane potting compound.

[0019] By adopting the above technical solution, this flexible thermally conductive potting compound possesses excellent flexibility and thermal conductivity. The silicone rubber or polyurethane potting compound can tightly fill the gap between the inner wall of the mounting base and the protective inner shell. On the one hand, it serves as an isolation and protection mechanism, preventing external dust, moisture, corrosive gases, etc., from entering the mounting base and damaging the elastic suspension frame and core sensing module, thus extending the sensor's lifespan. On the other hand, it effectively conducts the heat generated by the core sensing module during operation to the mounting base and then dissipates it into the surrounding environment, preventing heat accumulation inside and overheating, which could affect the performance and measurement accuracy of the core sensing module.

[0020] As a preferred embodiment, the core sensing module includes a circuit board, and a MEMS inertial measurement unit, a microprocessor, and a signal output interface soldered onto the circuit board.

[0021] By adopting the above technical solution, the MEMS inertial measurement unit includes at least a three-axis accelerometer and a three-axis gyroscope. The three-axis accelerometer can accurately measure the acceleration of the mine tilt sensor along three coordinate axes, thereby sensing the sensor's tilt, vibration, and other motion states. The three-axis gyroscope can monitor the sensor's angular velocity along three axes in real time, providing the microprocessor with information about the sensor's rotation angle and speed. The microprocessor is responsible for processing and analyzing the acceleration and angular velocity data collected by the MEMS inertial measurement unit. Through built-in algorithms, the microprocessor can convert this data into accurate tilt angle information and perform corresponding calculations and adjustments according to actual needs. The signal output interface is used to output the tilt angle data processed by the microprocessor to external devices, such as monitoring systems and control systems. In this way, operators can obtain the tilt angle information measured by the mine tilt sensor in real time, so as to understand the tilt status of the equipment or structure in a timely manner, take corresponding measures for adjustment and maintenance, and ensure the safe and stable operation of the equipment.

[0022] Compared with the prior art, the beneficial effects of this utility model are: This utility model;

[0023] 1. By using the axial damping of the elastic element and the radial floating of the floating element, a multi-dimensional and multi-layered vibration reduction system is formed, which can effectively decompose and absorb vibration and impact energy from different directions, and the protection effect is significantly better than that of a single vibration reduction structure.

[0024] 2. The design of the floating component enables the core sensing module to adaptively adjust its attitude through slight floating when subjected to non-axial impacts. This avoids structural damage and ensures a more stable relative relationship between the gravity sensing element (MEMS) and the direction of gravity, thereby improving the accuracy of dynamic measurement.

[0025] 3. The downward-facing mounting base structure, sealed bearings, and flexible thermally conductive potting compound together form a barrier against dust, moisture, and heat dissipation, greatly improving the long-term reliability of the sensor in the harsh environment of the mine.

[0026] 4. The cooperation between the guide rod and the semi-circular guide groove ensures the accuracy and controllability of the floating process, prevents unexpected displacement of the components, and guarantees the repeatability and accuracy of the measurement. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a mine tilt sensor according to this utility model;

[0028] Figure 2 This utility model relates to an overall structure of a mine tilt sensor. Figure 1 A structural schematic diagram of the enlarged view at point A;

[0029] Figure 3 This utility model relates to a mine tilt sensor. Figure 1 A schematic diagram of the structure in a partial half-section view;

[0030] Figure 4 This utility model relates to a mine tilt sensor. Figure 2 A structural schematic diagram of the enlarged view at point B;

[0031] Figure 5 This utility model relates to a mine tilt sensor. Figure 2 A structural schematic diagram of the front view.

[0032] In the picture:

[0033] 100. Mounting base; 101. Mounting ear plate; 200. Protective inner shell; 201. Mounting support; 31. Floating support plate; 32. Floating plate; 321. Arc-shaped groove; 41. Sliding sleeve; 42. Sliding rod; 43. Damping spring; 51. Rotating shaft; 511. Rotating pin; 52. Mounting seat; 53. Floating ring; 6. Core sensing module; 61. MEMS inertial measurement unit; 71. Rotating plate; 72. Guide rod; 721. Guide groove. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0035] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0036] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0037] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0038] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0039] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0040] like Figures 1 to 5 As shown, a mining tilt sensor includes a cylindrical mounting base 100 with the opening facing downward, mounting ear plates 101 respectively disposed on the outer periphery of the closed end of the upper end face of the mounting base 100, an elastic suspension frame disposed in the mounting base 100, and a core sensing module 6 fixedly connected to the lower end face of the elastic suspension frame.

[0041] like Figure 1 , Figure 3 and Figure 5 As shown, the elastic suspension frame includes a protective inner shell 200 rigidly connected to the top surface of the inner cavity of the mounting base 100, an elastic element disposed within the inner cavity of the protective inner shell 200, a floating support plate 31 fixedly disposed on the lower end face of the elastic element, a floating plate 32 disposed parallel to the floating support plate 31, and a floating element disposed between the floating plate 32 and the floating support plate 31. The core sensing module 6 is rigidly connected to the end of the floating plate 32 away from the end connected to the floating support plate 31. Through this elastic suspension frame structure, a stable support with a certain buffering performance can be provided for the core sensing module 6. When there is vibration or impact in the mining environment, the elastic element can absorb most of the vibration energy, reducing the impact on the core sensing module 6 and ensuring its normal operation. The floating element further enhances the floating capability of the core sensing module 6 within a certain range, enabling it to better adapt to different tilt angle changes.

[0042] like Figure 3 , Figure 4 and Figure 5As shown, the elastic element includes a sliding sleeve 41 fixedly connected to the inner cavity of the protective inner shell 200, a sliding rod 42 slidably connected to the sliding sleeve 41, and a damping spring 43 disposed on the outer periphery of the sliding rod 42. One end of the damping spring 43 is fixedly connected to the inner cavity of the sliding sleeve 41, and the other end of the damping spring 43 is fixedly connected to the floating support plate 31. The sliding rod 42 can slide flexibly within the sliding sleeve 41, and the damping spring 43 will deform accordingly according to the displacement of the sliding rod 42, thereby playing a role in buffering and shock absorption. When subjected to external vibration or impact, the sliding rod 42 slides within the sliding sleeve 41, compressing or stretching the damping spring 43, converting the vibration energy into the elastic potential energy of the spring, thereby reducing the energy transmitted to the floating support plate 31 and the core sensing module 6.

[0043] like Figure 4 and Figure 5 As shown, the floating component includes a rotating shaft 51 fixedly connected to the lower end face of the floating plate 32, a mounting bracket 201 rotatably connected to both ends of the rotating shaft 51 and fixedly connected to the protective inner shell 200, mounting seats 52 respectively fixedly disposed on both sides of the rotating shaft 51, and a floating ring 53 rotatably connected to the mounting seats 52. The floating ring 53 is interference-fitted with the floating plate 32, and the floating plate 32 is provided with an arc-shaped groove 321 adapted to the outer circular surface of the floating ring 53. When the core sensing module 6 is subjected to external impact, the floating plate 32 causes the rotating shaft 51 to change angle, and the floating ring 53 rotates on the mounting seat 52, so that the floating plate 32 can float flexibly within a certain range. This floating design allows the core sensing module 6 to better adjust its own posture to adapt to different directions and degrees of tilt when facing complex mining environments. Meanwhile, the interference fit and the arc-shaped groove 321 design ensure the connection stability between the floating ring 53 and the floating plate 32, preventing loosening or separation during frequent vibrations and floating. When the floating ring 53 rotates, it applies a force to the floating support plate 31, causing the floating support plate 31 to also undergo a certain axial displacement. This displacement further affects the state of the elastic element, causing the damping spring 43 to compress or stretch, thereby absorbing and buffering the vibration energy again. In this way, through the synergistic effect of the elastic element and the floating element, a multi-layered, multi-dimensional buffering and shock absorption system can be formed, minimizing the impact of external vibrations and impacts on the core sensing module 6.

[0044] like Figure 2As shown, to guide the rotation direction of the rotating shaft 51 during rotation, the system includes rotating pins 511 fixedly mounted at both ends of the rotating shaft 51, a rotating plate 71 connected to the rotating pins 511 via a spline structure, a guide rod 72 fixedly mounted at the other end of the rotating plate 71, and guide grooves 721 respectively mounted on the outside of the mounting support 201. The guide grooves 721 are semi-circular, and the ends of the guide rods 72 can slide within the guide grooves 721. When the rotating shaft 51 rotates, the rotating pins 511 drive the rotating plate 71 to rotate, and the guide rods 72 on the rotating plate 71 slide under the constraint of the guide grooves 721, thereby providing precise guidance for the rotation of the rotating shaft 51 and ensuring that the rotation direction of the rotating shaft 51 meets the design requirements. This allows the core sensing module 6 to adjust its attitude more stably and accurately during floating. At the same time, this guiding structure also helps to enhance the structural stability of the entire elastic suspension frame, preventing the position of the core sensing module 6 from deviating due to the arbitrary rotation of the rotating shaft 51, which would affect the measurement accuracy of the mine tilt sensor. Furthermore, the semi-circular design of the guide groove 721 not only meets the rotation requirements of the rotating shaft 51 within a certain range but also limits the rotation angle of the rotating shaft 51 to prevent damage to related components due to excessive rotation angle. In actual mining environments, complex vibrations and impacts may cause the rotation of the rotating shaft 51 to become unstable. The design of the guide rod 72 and the guide groove 721 guides the rotating shaft 51 to rotate in a predetermined direction, further improving the reliability and durability of the mining tilt sensor in harsh environments. Moreover, this mechanical guiding structure is relatively simple, easy to maintain and replace, reducing the operating cost and maintenance difficulty of the mining tilt sensor.

[0045] like Figure 2 As shown, a sealed bearing is provided at the connection between the rotating pin 511 and the mounting support 201. The sealed bearing is a deep groove ball bearing. The sealed deep groove ball bearing at the connection between the rotating pin 511 and the mounting support 201 ensures the flexibility of the rotating pin 511 during rotation, allowing it to smoothly drive the core sensing module 6 for attitude adjustment. Furthermore, the sealed design effectively prevents dust, moisture, and other impurities from the mining environment from entering the sealed bearing, extending its service life and thus ensuring the stability and reliability of the entire elastic suspension structure.

[0046] like Figure 1 As shown, the mounting ear plate 101 is provided with mounting holes, which can be used to fix the sensor to other equipment or structures through bolts or other connectors, ensuring the firmness and stability of the sensor installation. At the same time, the design of the mounting ear plate 101 allows the sensor's installation position to be flexibly adjusted according to actual needs to adapt to different mining environments.

[0047] like Figure 5As shown, it also includes a flexible thermally conductive potting compound disposed between the inner wall of the mounting base 100 and the protective inner shell 200. The flexible thermally conductive potting compound is made of silicone rubber or polyurethane, which has good flexibility and thermal conductivity. The silicone rubber or polyurethane potting compound can tightly fill the gap between the inner wall of the mounting base 100 and the protective inner shell 200. On the one hand, it can isolate and protect the mounting base 100 from external dust, moisture, corrosive gases, etc., preventing damage to the elastic suspension bracket and the core sensing module 6, thus extending the sensor's lifespan. On the other hand, it can effectively conduct the heat generated by the core sensing module 6 during operation to the mounting base 100 and then dissipate it into the surrounding environment, preventing heat accumulation inside and excessive temperature, which would affect the performance and measurement accuracy of the core sensing module 6.

[0048] like Figure 1 As shown, the core sensing module 6 includes a circuit board, a MEMS inertial measurement unit 61 soldered onto the circuit board, a microprocessor, and a signal output interface. The MEMS inertial measurement unit 61 includes at least a three-axis accelerometer and a three-axis gyroscope. The three-axis accelerometer can accurately measure the acceleration of the mine tilt sensor in the three coordinate axes, thereby sensing the sensor's tilt, vibration, and other motion states. The three-axis gyroscope can monitor the sensor's angular velocity in the three axes in real time, providing the microprocessor with information about the sensor's rotation angle and speed. The microprocessor is responsible for processing and analyzing the acceleration and angular velocity data collected by the MEMS inertial measurement unit 61. Through built-in algorithms, the microprocessor can convert this data into accurate tilt angle information and perform corresponding calculations and adjustments according to actual needs. The signal output interface is used to output the tilt angle data processed by the microprocessor to external devices, such as monitoring systems and control systems. In this way, operators can obtain the tilt angle information measured by the mine tilt sensor in real time, so as to understand the tilt status of the equipment or structure in a timely manner, take corresponding measures for adjustment and maintenance, and ensure the safe and stable operation of the equipment.

[0049] In mining environments, sensors not only face vibration and impact but may also be affected by harsh conditions such as dust and moisture. To improve the reliability and stability of mining tilt sensors, the mounting base 100 adopts a downward-facing cylindrical structure. This structural design effectively prevents dust and moisture from directly entering the sensor and damaging the elastic suspension frame and core sensing module 6. Simultaneously, the mounting lugs 101 facilitate the installation and fixation of the sensor, ensuring it is securely installed in the required position and preventing loosening or displacement during operation.

[0050] In this embodiment, when the sensor is subjected to a vertical impact, the impact force is transmitted to the elastic element through the protective inner shell 200. The floating support plate 31 drives the sliding rod 42 to compress or stretch the damping spring 43, converting the impact kinetic energy into the elastic potential energy of the spring, thus achieving primary buffering.

[0051] When subjected to lateral impact or rapid changes in tilt angle, the core sensing module 6 and the floating plate 32 tend to rotate around their axis. At this time, the floating plate 32 drives the rotating shaft 51 to rotate, and the floating ring 53 fixed on it rolls within the arc-shaped groove 321 of the floating support plate 31. This floating process has two key effects: first, it allows the core sensing module 6 to produce a small adaptive angle deflection, avoiding structural jamming or excessive stress; second, the rolling of the floating ring 53 applies a force to the floating support plate 31, causing the floating support plate 31 to produce a small axial displacement, thereby driving the elastic element, i.e., the damping spring 43, to deform again, converting part of the lateral impact energy into axial spring potential energy for secondary absorption.

[0052] To ensure the accuracy of the floating process, the rotating pins 511 at both ends of the rotating shaft 51 are connected to the rotating plate 71 via splines. The guide rod 72 at the end of the rotating plate 71 extends into the semi-circular guide groove 721 on the outside of the mounting support 201 and slides. This structure provides precise mechanical guidance and limit for the rotation of the rotating shaft 51, ensuring that the motion trajectory is controllable and stable.

[0053] A flexible, thermally conductive potting compound is filled between the inner wall of the mounting base 100 and the protective inner shell 200 to provide sealing, auxiliary shock absorption, and heat conduction. The core sensing module 6 includes a circuit board and its onboard MEMS units, microprocessor, and output interface to perform tilt angle sensing, calculation, and signal output.

[0054] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A tilt sensor for mining applications, characterized in that: It includes a cylindrical mounting base (100) with the opening facing downward, mounting ear plates (101) respectively disposed on the outer periphery of the closed end of the upper end face of the mounting base (100), an elastic suspension frame disposed in the mounting base (100), and a core sensing module (6) fixedly connected to the lower end face of the elastic suspension frame. The elastic suspension frame includes a protective inner shell (200) rigidly connected to the top surface of the inner cavity of the mounting base (100), an elastic element disposed in the inner cavity of the protective inner shell (200), a floating support plate (31) fixedly disposed on the lower end surface of the elastic element, a floating plate (32) disposed parallel to the floating support plate (31), and a floating element disposed between the floating plate (32) and the floating support plate (31). The core sensing module (6) is rigidly connected to the end of the floating plate (32) away from the end connected to the floating support plate (31).

2. A mine tilt sensor according to claim 1, characterized in that: The elastic element includes a sliding sleeve (41) fixedly connected to the inner cavity of the protective inner shell (200), a sliding rod (42) slidably connected to the sliding sleeve (41), and a damping spring (43) disposed on the outer periphery of the sliding rod (42). One end of the damping spring (43) is fixedly connected to the inner cavity of the sliding sleeve (41), and the other end of the damping spring (43) is fixedly connected to the floating support plate (31).

3. A mine tilt sensor according to claim 2, characterized in that: The floating component includes a rotating shaft (51) fixedly connected to the lower end face of the floating plate (32), a mounting bracket (201) rotatably connected to both ends of the rotating shaft (51) and fixedly connected to the protective inner shell (200), mounting seats (52) respectively fixedly disposed on both sides of the rotating shaft (51), and a floating ring (53) rotatably connected to the mounting seat (52). The floating ring (53) is interference-fitted with the floating plate (32), and the floating plate (32) is provided with an arc-shaped groove (321) adapted to the outer circular surface of the floating ring (53).

4. A mine tilt sensor according to claim 3, characterized in that: It also includes a rotating pin (511) fixedly disposed at both ends of the rotating shaft (51), a rotating plate (71) connected to the rotating pin (511) via a spline structure, a guide rod (72) fixedly disposed at the other end of the rotating plate (71), and guide grooves (721) disposed on the outside of the mounting bracket (201). The guide grooves (721) are configured as semi-circular structures, and the ends of the guide rods (72) can slide within the guide grooves (721).

5. A mine tilt sensor according to claim 4, characterized in that: A sealed bearing is provided at the connection between the rotating pin (511) and the mounting support (201), and the sealed bearing is a deep groove ball bearing.

6. A mine tilt sensor according to claim 5, characterized in that: The mounting ear plate (101) is provided with mounting holes.

7. A mine tilt sensor according to claim 6, characterized in that: It also includes a flexible thermally conductive potting compound disposed between the inner wall of the mounting base (100) and the protective inner shell (200), wherein the flexible thermally conductive potting compound is silicone rubber or polyurethane potting compound.

8. A mine tilt sensor according to claim 7, characterized in that: The core sensing module (6) includes a circuit board, a MEMS inertial measurement unit (61), a microprocessor and a signal output interface soldered on the circuit board, wherein the MEMS inertial measurement unit (61) includes at least a three-axis accelerometer and a three-axis gyroscope.

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