Multidirectional monitoring structure and multidirectional monitoring system applying same
By designing a multi-directional monitoring structure in dry bulk ports, the problem of inaccurate coal moisture content monitoring in the existing technology is solved, and accurate monitoring of different stacking patterns and slopes is achieved, which improves the accuracy and efficiency of the wet dust removal system.
Patent Information
- Application Number
- CN202411753492.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-04-15
AI Technical Summary
The prior art is difficult to accurately obtain and control the moisture content of coal and other materials in dry bulk ports, resulting in low wet dust removal effect and low dust pollution control efficiency.
A multi-directional monitoring structure is designed, including mounting frames, homogeneous frames, spacing adjustment components, angle adjustment components and near-infrared coal moisture content sensors. Through the coordinated work of these components, it ensures that the sensor maintains an effective distance and angle from the coal stacking surface and improves monitoring accuracy.
Accurate monitoring of different stacking forms and slopes is achieved, the monitoring accuracy and data coverage of infrared coal moisture content sensors are improved, and the scientific effectiveness and accuracy of wet dust removal systems are improved.
Smart Images
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Abstract
Description
Technical Field
[0001] The invention relates to the technical field of infrared moisture content detection of bulk dry goods such as coal, ore, grain, etc., and in particular to a multi-directional monitoring structure and a multi-directional monitoring system using the structure. Background Art
[0002] Ports are hubs for comprehensive transportation and strategic resources for economic and social development. Bulk cargo ports, represented by coal ports, are key links and important supports for the safe supply of strategic resources, and are related to the stability of the national energy and basic material supply chains and the construction of a domestic and international "dual circulation". "For the economy to develop and the country to become stronger, transportation, especially maritime transport, must first be strengthened. We must aim high and strive to build world-class smart ports and green ports." Due to the basic pattern of transporting coal from the north to the south, from the west to the east, and rail-sea combined transport in my country and geographical factors, the water transport hub ports connected to the railways are mainly concentrated in coastal cities. For example, the coal transportation volume of 21 major hub ports such as Qinhuangdao, Tianjin, Qingdao, Shanghai, and Shenzhen accounts for more than 95% of the entire coastal area. Statistics show that the throughput of coal and products at coastal ports in 2020 was 1.65 billion tons, and the throughput of inland ports reached 910 million tons. Due to the limitations of material characteristics and port transshipment technology, dry bulk cargo represented by coal will produce certain dust pollution during loading, unloading, storage and transportation, affecting the port area and surrounding environment as well as the health of the population. This has become the main environmental problem facing bulk ports. For many years, dry bulk ports have also been committed to dust control, using wet dust removal, dry dust removal, chemical dust removal, physical dust removal, closure and other dust prevention and control methods and measures, but because the dust generation points in ports are numerous and wide, especially the difficulty of tracing and controlling unorganized emissions, the overall dust control efficiency is low. "Adhere to precise, scientific and legal pollution control, and continue to fight the battle to protect blue skies, clear waters and clean land". my country's pollution prevention and control battle will place more emphasis on precise, scientific and legal pollution control. The main tasks also propose "adhering to both symptomatic and root cause treatment, and promoting in-depth treatment of traffic pollution", and require "further improving the level of port pollution control". The traditional dust pollution control methods of dry bulk ports are lacking in prevention, timeliness and accuracy. There is a large gap between the existing dust prevention and control system and the management needs of scientific pollution control. Against the background of the rapid development of artificial intelligence technology, the use of precise, scientific and intelligent technologies such as new monitoring technologies and intelligent algorithms to control port dust pollution has become a new direction for the future green development of dry bulk ports. At present, the mainstream solutions for dust control in dry bulk ports (represented by coal) are closed storage, windbreak nets combined with wet dust removal, and tarpaulin. Dust suppressants and dry dust removal are auxiliary dust suppression methods. Closed storage projects are expensive, and tarpaulin methods have safety hazards and affect operating efficiency. In the future, windbreak nets combined with wet dust removal will continue to be the main method of dust control in dry bulk ports.
[0003] However, the timing, intensity and frequency of material humidification in the existing wet dust removal system are generally determined based on experience, resulting in a low overall dust suppression effect. The moisture content of the material is the core parameter of the wet dust removal method. Too low a moisture content will lead to serious dust pollution, while too high a moisture content will waste water and electricity resources and affect the quality of the material. Taking coal as an example, too high a moisture content will reduce the calorific value of coal. Therefore, it is very important to accurately obtain and control the moisture content of the material. For many years, due to technical conditions, the rapid acquisition of high-precision moisture content on the surface of materials in open-air storage areas has always been a difficult problem for bulk dust control in bulk ports. In the past, the moisture content of stockpiled materials in wet dust removal intelligent control systems was indirectly calculated through model algorithms based on meteorological conditions such as initial moisture content, wind speed, and sunshine, and its accuracy could not be guaranteed.
[0004] Therefore, developing moisture content monitoring equipment to obtain the moisture content of materials in a timely manner and use it for dust linkage control will greatly improve the scientific effectiveness and accuracy of the wet dust removal system. However, the distance and angle differences between the existing near-infrared coal moisture content sensor and the measured material will cause fluctuations in monitoring accuracy. Controlling the relative distance and posture between the measuring sensor and the surface of the coal pile is an important factor in ensuring the consistency of continuous monitoring.
[0005] To this end, we propose a multi-directional monitoring structure and a monitoring system including the same to solve the above problems. Summary of the invention
[0006] The technical problem to be solved by the present invention is to overcome the defects of the prior art. The present invention proposes a multi-directional monitoring structure and a multi-directional monitoring system using the structure, which can ensure that the distance and angle between the infrared coal moisture content sensor and the surface of the coal pile to be measured are always maintained at an effective monitoring position according to the changeable morphology of bulk cargo stacking and material taking operations, thereby improving the accuracy of subsequent monitoring.
[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a multi-directional monitoring structure, comprising: A mounting frame, used to connect to a mobile terminal of an external monitoring device and arranged facing the coal stack; The same position frame has a spacing adjustment component, a sliding frame, a sensor positioning plate and a pitch-changing rotating component fixed therein. The spacing adjustment component is used to servo-shift the sliding frame in the horizontal direction of the installation frame facing the coal stack. The pitch-changing rotating component is connected and fixed to the sliding frame, and includes a multi-stage pitch-changing point in a direction perpendicular to the servo-shifting axis of the sliding frame, and the sensor positioning plate is independently servo-rotated at each pitch-changing point. An angle adjustment assembly includes a driving member, a limiting member, a flip shaft and a swing shaft, wherein the flip shaft bearing is connected to the bottom end of the mounting frame, the swing shaft is arranged in parallel with the flip shaft and is hingedly linked with the driving member, the upper and lower ends of the same position frame are respectively connected and fixed to the swing shaft and the flip shaft, the driving member is used to swing and push the same position frame in a horizontal direction with the mounting frame facing the coal stack, and the swing amplitude is limited by the limiting member; The near-infrared coal moisture content sensor is fixed at the end of the sensor positioning plate and communicates with the external monitoring equipment.
[0008] Furthermore, the spacing adjustment component includes a first motor, a screw rod and a sliding rod, the screw rod bearing is connected to the two ends of the inner wall of the same position frame, the sliding rod is parallel to the screw rod, and its two ends are fixedly connected to the two ends of the inner wall of the same position frame, the center of the sliding frame is threadedly matched with the screw rod, and its outer end is slidably connected to the sliding rod.
[0009] Furthermore, there are three sliding rods which are equidistantly arranged around the outer circumference of the screw rod, and are used for triangular sliding limiting of the sliding frame.
[0010] Furthermore, in the variable pitch rotating assembly, each level of variable pitch point includes a rotating motor, a fixed plate, a synchronous pulley set, a rotating shaft and a synchronous belt. A positioning groove is provided at one end of the fixed plate to fix the rotating motor, and a bearing is connected to the rotating shaft at the other end. The synchronous belt is tensionedly covered on the synchronous pulley set. One end of the synchronous pulley set is coaxially fixed to the output end of the rotating motor, and the other end is coaxially fixed to the rotating shaft. The bearing-exposed fixed plate is arranged to be fixedly connected to the fixed plate in the next level of variable pitch point.
[0011] Furthermore, the sensor positioning plate is sleeved on the rotating shaft in the pitch change point of the last stage and is positioned by two symmetrical clamping block bolts, and the clamping blocks are connected and fixed to the rotating shaft in the pitch change point of the corresponding next stage.
[0012] Furthermore, the driving component includes a second motor, a gearbox, a driving arm, a swing arm and a hinged head. The second motor and the gearbox are fixed on the mounting frame. The second motor is decelerated and reversed through the gearbox. One end of the driving arm is coaxially fixed to the output end of the gearbox, and the other end is hinged to the swing arm. The hinged head is fixed to one end of the swing arm away from the driving arm, and is sleeved on the swing shaft.
[0013] Furthermore, the limiting member includes an arc-shaped angle plate and a vertical connecting rod, the angle plate is provided with an adjustment slot, the bottom end of which is fixed to the side bolts of the bottom end of the mounting frame through an extended fixing block, one end of the connecting block is fixedly connected to the flip shaft, and the other end is slidably connected in the adjustment slot.
[0014] Furthermore, the adjustment groove is a 90-degree arc structure. When the connecting rod slides to the lowest position in a clockwise direction, the front face of the installation frame is parallel to the side of the same position frame connected to the swing axis. When the connecting rod slides to the highest position, the front face of the installation frame is perpendicular to the side of the same position frame connected to the swing axis.
[0015] Furthermore, the length of the swing arm corresponds to the length of the adjustment slot.
[0016] A monitoring system, which applies the above-mentioned multi-directional monitoring structure, also includes a mobile terminal and a control platform terminal. The mobile terminal is a walking trolley, which can lift the above-mentioned multi-directional monitoring structure to a high position through a lifting frame. The control platform terminal is used to communicate data with a near-infrared coal moisture content sensor in the above-mentioned multi-directional monitoring structure.
[0017] Compared with the prior art, the beneficial effects of the present invention include: for coal materials in different stacking forms, in order to cope with different slope change requirements, the present invention designs a corresponding angle adjustment component, and the driving member swings and pushes the same-position frame in a horizontal direction with the installation frame facing the coal stack, and the swing amplitude is simultaneously limited by the limiting member, which ensures that the subsequent corresponding infrared coal moisture content sensor used for detection can be adjusted to correspond to the slope angle of each coal stack to maintain the flatness during data detection. Similarly, the corresponding near-infrared coal moisture content sensor and the corresponding spacing adjustment component and variable pitch rotation component will be fixed in the same same-position frame, and the spacing adjustment component realizes the spacing adjustment between the infrared coal moisture content sensor and the stacked coal, and the variable pitch rotation component realizes the rotational range monitoring of different positions under the same slope to ensure the completeness of the detection data coverage. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them: Figure 1 Schematically showing a front isometric view of a monitoring structure proposed according to one embodiment of the present invention; Figure 2 Schematically shows an isometric view of the back side of a monitoring structure proposed according to one embodiment of the present invention; Figure 3 Schematically shows a method according to an embodiment of the present invention. Figure 1 A partial enlarged view; Figure 4 Schematically shows a method according to an embodiment of the present invention. Figure 1 A partial enlarged view of point B; Figure 5 Schematically shows a method according to an embodiment of the present invention. Figure 2 A partial enlarged view; Figure 6 Schematically shows a method according to an embodiment of the present invention. Figure 2 A partial enlarged view of point B; Figure 7 The schematic diagram of the module composition of the monitoring system proposed according to one embodiment of the present invention is shown schematically.
[0019] Numbers in the figure: 1. Installation frame; 2. Same-position frame; 3. Spacing adjustment assembly; 301. First motor; 302. Screw rod; 303. Slide rod; 4. Slide frame; 5. Sensor positioning plate; 6. Pitch-variable rotation assembly; 601. Rotating motor; 602. Fixed plate; 603. Synchronous belt pulley set; 604. Rotating shaft; 605. Synchronous belt; 7. Scheduling adjustment assembly; 8. Driving member; 801. Second motor; 802. Gearbox; 803. Driving arm; 804. Swing arm; 805. Articulated joint; 9. Limiting member; 901. Angle plate; 902. Connecting rod; 903. Adjusting groove; 904. Fixed block; 10. Clamping block; 11. Flipping axis; 12. Swinging axis; 13. Near-infrared coal moisture content sensor; 14. Connecting seat. DETAILED DESCRIPTION
[0020] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction to the technical solution of the present invention.
[0021] According to one embodiment of the present invention, Figure 1-Figure 7 Shown.
[0022] like Figure 1-Figure 6 As shown, a multi-directional monitoring structure includes: The installation frame 1 is used to connect the mobile terminal of the external monitoring device and is arranged facing the coal pile; The same position frame 2 has a spacing adjustment component 3, a sliding frame 4, a sensor positioning plate 5 and a pitch-changing rotating component 6 fixed therein. The spacing adjustment component 3 is used to servo-shift the sliding frame 4 in the horizontal direction of the installation frame 1 facing the coal stack. The pitch-changing rotating component 6 is connected and fixed to the sliding frame 4, and includes a multi-stage pitch-changing point in a direction perpendicular to the servo-shifting axis of the sliding frame 4, and independently servo-rotates the sensor positioning plate 5 at each pitch-changing point; An angle adjustment assembly, including a driving member 8, a limiting member 9, a flip shaft 11 and a swing shaft 12, wherein the flip shaft 11 is connected to the bottom end of the mounting frame 1 by a bearing, the swing shaft 12 is arranged in parallel with the flip shaft 11, and is hingedly linked with the driving member 8, the upper and lower ends of the same position frame 2 are respectively connected and fixed to the swing shaft 12 and the flip shaft 11, the driving member 8 is used to swing and push the same position frame 2 in a horizontal direction with the mounting frame 1 facing the coal stack, and the swing amplitude is limited by the limiting member 9; The near-infrared coal moisture content sensor 13 is fixed to the end of the sensor positioning plate 5 and communicates with the external monitoring equipment.
[0023] According to the above structure record, for coal materials in different stacking forms, in order to cope with the changing needs of different slopes, the present invention designs a corresponding angle adjustment component, and the driving member 8 swings and pushes the same-position frame 2 in the horizontal direction with the installation frame 1 facing the coal stack, and the swing amplitude is simultaneously limited by the limiting member 9, which ensures that the subsequent corresponding infrared coal moisture content sensor used for detection can be adjusted to correspond to the slope angle of each coal stack to maintain the flatness during data detection. Similarly, the corresponding near-infrared coal moisture content sensor 13 and the corresponding spacing adjustment component 3 and variable pitch rotation component 6 will be fixed in the same position frame 2, and the spacing adjustment component 3 realizes the spacing adjustment between the infrared coal moisture content sensor and the stacked coal, and the variable pitch rotation component 6 realizes the rotational range monitoring of different positions under the same slope to ensure the completeness of the detection data coverage.
[0024] The corresponding structural components may vary in different implementation scenarios. Specifically, in this embodiment, for the spacing adjustment component 3 between the infrared coal moisture content sensor and the stacked coal, the structure specifically includes a first motor 301, a screw rod 302 and a slide rod 303. The screw rod 302 is bearing-connected to the two ends of the inner wall of the same-position frame 2. The slide rod 303 is parallel to the screw rod 302, and its two ends are fixedly connected to the two ends of the inner wall of the same-position frame 2. The center of the sliding frame 4 is threadedly matched with the screw rod 302, and its outer end is slidably connected to the slide rod 303.
[0025] After the first motor 301 outputs rotation, it can drive the screw rod 302 to rotate forward and reversely in the same position frame 2. The sliding frame 4 that is threadedly matched with the screw rod 302 can slide linearly with the axis of the screw rod 302 under the limiting action of the sliding rod 303, so as to realize the infrared coal moisture content sensor moving away from or close to the coal material. Similarly, in order to further maintain the stability of the subsequent infrared coal moisture content sensor and the connection rigidity requirements required by the variable pitch rotation component 6, the sliding rod 303 is three and equidistantly arranged around the outer periphery of the screw rod 302, which is used to triangularly slide and limit the sliding frame 4.
[0026] In some embodiments, in the variable pitch rotating assembly 6, each level of variable pitch point includes a rotating motor 601, a fixed plate 602, a synchronous pulley group 603, a rotating shaft 604 and a synchronous belt 605. A positioning groove is provided at one end of the fixed plate 602 to fix the rotating motor 601, and the other end is connected to the rotating shaft 604 by a bearing. The synchronous belt 605 is tensioned on the synchronous pulley group 603. One end of the synchronous pulley group 603 is coaxially fixed to the output end of the rotating motor 601, and the other end is coaxially fixed to the rotating shaft 604. The bearing-exposed fixed plate 602 is configured to be fixedly connected to the fixed plate 602 in the next level of variable pitch point.
[0027] For the variable pitch rotating component 6, it can realize radial variable pitch in the direction perpendicular to the screw rod 302, that is, after the angle adjustment component adjusts the angle adjustment component to correspond to the corresponding coal stack slope, for the moisture content detection in the plane parallel to the slope, the present invention is also not a conventional fixed-point multi-point detection, but a rotational coverage detection at different positions in the plane is realized through multi-level variable pitch points. Taking a certain detection point as an example, after all the margin points are unfolded, the corresponding fixed plate 602 is fully extended, and the fixed plate 602 at the last stage rotates independently to drive the infrared coal moisture content sensor to perform a circular multi-point detection, ensuring that the moisture content data detected subsequently can cover the moisture content of the coal stack, and the data is more reasonable and accurate.
[0028] Regarding the fixation of the infrared coal moisture content sensor, in the present embodiment, the sensor positioning plate 5 is sleeved on the rotating shaft 604 in the pitch change point of the last stage, and is positioned by two symmetrical clamping blocks 10 with bolts, and the clamping blocks 10 are connected and fixed to the rotating shaft 604 in the pitch change point of the corresponding next stage.
[0029] For the angle adjustment of the angle adjustment assembly, in some embodiments, the driving member 8 includes a second motor 801, a gearbox 802, a driving arm 803, a swing arm 804 and a hinged head 805. The second motor 801 and the gearbox 802 are fixed on the mounting frame 1. The second motor 801 is decelerated and reversed through the gearbox 802. One end of the driving arm 803 is coaxially fixed to the output end of the gearbox 802, and the other end is hinged to the swing arm 804. The hinged head 805 is fixed to one end of the swing arm 804 away from the driving arm 803, and is sleeved on the swing shaft 12.
[0030] The limiting member 9 includes an arc-shaped angle plate 901 and a vertical connecting rod 902. An adjustment groove 903 is provided on the angle plate 901, and its bottom end is fixed to the bottom side bolt of the installation frame 1 through an extended fixing block 904. One end of the connecting block is fixedly connected to the flip shaft 11, and the other end is slidably connected in the adjustment groove 903.
[0031] Furthermore, the adjustment slot 903 is a 90-degree arc structure, and in a clockwise direction, when the connecting rod 902 slides to the lowest position, the front face of the installation frame 1 is parallel to the side of the same position frame 2 connected to the swing shaft 12, and when the connecting rod 902 slides to the highest position, the front face of the installation frame 1 is perpendicular to the side of the same position frame 2 connected to the swing shaft 12. The length of the swing arm 804 corresponds to the length of the adjustment slot 903.
[0032] The flip axis 11 is connected and fixed to the bottom end of the side of the isotropic frame 2 through multiple connecting seats 14. Similarly, the swing axis 12 is also connected and fixed to the side of the isotropic frame 2 through multiple connecting seats 14, ensuring that the angle swing effect of the swing axis 12 during the angle adjustment of the angle adjustment component can be synchronously transmitted to the isotropic frame 2, thereby realizing the subsequent angle adjustment of the near-infrared coal moisture content sensor 13.
[0033] During the specific angle adjustment process, the second motor 801 rotates and outputs, and is decelerated and reversed via the gearbox 802, and synchronously transmitted to the driving arm 803 to drive it to flip. Under this action, the swing arm 804 hinged to the driving arm 803 can swing out in the direction facing the same position frame 2. During the synchronous swinging process, due to the limitation of the bottom connecting rod 902 in the adjustment groove 903 and the 90-degree arc structure design of the adjustment groove 903, the subsequent flip adjustment within 90° of the same position frame 2 and the near-infrared coal moisture content sensor 13 on the same position frame 2 is guaranteed to correspond to the slope of the external coal stack.
[0034] Similarly, if Figure 7 As shown, the monitoring system including the multi-directional monitoring structure described above should also be within the protection scope of the present invention. In some embodiments, the monitoring system also includes a mobile terminal and a control platform terminal. The mobile terminal is a walking trolley, which can lift the multi-directional monitoring structure to a high position through a lifting frame. The control platform terminal is used to communicate data with the near-infrared coal moisture content sensor 13 in the multi-directional monitoring structure.
[0035] The technical scope of the present invention is not limited to the contents in the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.
Claims
1. A multi-directional monitoring structure, characterized in that: include: A mounting frame, used to connect to a mobile terminal of an external monitoring device and arranged facing the coal stack; The same position frame has a spacing adjustment component, a sliding frame, a sensor positioning plate and a pitch-changing rotating component fixed therein. The spacing adjustment component is used to servo-shift the sliding frame in the horizontal direction of the installation frame facing the coal stack. The pitch-changing rotating component is connected and fixed to the sliding frame, and includes a multi-stage pitch-changing point in a direction perpendicular to the servo-shifting axis of the sliding frame, and the sensor positioning plate is independently servo-rotated at each pitch-changing point. An angle adjustment assembly includes a driving member, a limiting member, a flip shaft and a swing shaft, wherein the flip shaft bearing is connected to the bottom end of the mounting frame, the swing shaft is arranged in parallel with the flip shaft and is hingedly linked with the driving member, the upper and lower ends of the same position frame are respectively connected and fixed to the swing shaft and the flip shaft, the driving member is used to swing and push the same position frame in a horizontal direction with the mounting frame facing the coal stack, and the swing amplitude is limited by the limiting member; The near-infrared coal moisture content sensor is fixed at the end of the sensor positioning plate and communicates with the external monitoring equipment.
2. A multi-directional monitoring structure according to claim 1, characterized in that: The spacing adjustment component includes a first motor, a screw rod and a sliding rod. The screw rod bearing is connected to the two ends of the inner wall of the same position frame. The sliding rod is parallel to the screw rod, and its two ends are fixedly connected to the two ends of the inner wall of the same position frame. The center of the sliding frame is threadedly matched with the screw rod, and its outer end is slidably connected to the sliding rod.
3. A multi-directional monitoring structure according to claim 2, characterized in that: There are three sliding rods which are equidistantly arranged around the outer circumference of the screw rod and are used for triangular sliding limiting of the sliding frame.
4. A multi-directional monitoring structure according to claim 1, characterized in that: In the variable pitch rotating assembly, each level of variable pitch point includes a rotating motor, a fixed plate, a synchronous pulley set, a rotating shaft and a synchronous belt. A positioning groove is provided at one end of the fixed plate to fix the rotating motor, and a bearing is connected to the rotating shaft at the other end. The synchronous belt is tensionedly covered on the synchronous pulley set. One end of the synchronous pulley set is coaxially fixed to the output end of the rotating motor, and the other end is coaxially fixed to the rotating shaft. The bearing-exposed fixed plate is arranged to be fixedly connected to the fixed plate in the next level of variable pitch point.
5. The multi-directional monitoring structure according to claim 1, characterized in that: The sensor positioning plate is sleeved on the rotating shaft in the pitch change point of the last stage and is positioned by two symmetrical clamping block bolts. The clamping blocks are connected and fixed to the rotating shaft in the pitch change point of the corresponding next stage.
6. A multi-directional monitoring structure according to claim 1, characterized in that: The driving component includes a second motor, a gearbox, a driving arm, a swing arm and a hinged head. The second motor and the gearbox are fixed on the mounting frame. The second motor is decelerated and reversed through the gearbox. One end of the driving arm is coaxially fixed to the output end of the gearbox, and the other end is hinged to the swing arm. The hinged head is fixed to one end of the swing arm away from the driving arm, and is sleeved on the swing shaft.
7. A multi-directional monitoring structure according to claim 6, characterized in that: The limiting member includes an arc-shaped angle plate and a vertical connecting rod. An adjustment groove is provided on the angle plate, and its bottom end is fixed to the side bolts of the bottom end of the mounting frame through an extended fixing block. One end of the connecting block is fixedly connected to the flip shaft, and the other end is slidably connected in the adjustment groove.
8. A multi-directional monitoring structure according to claim 7, characterized in that: The adjustment groove is a 90-degree arc structure. In a clockwise direction, when the connecting rod slides to the lowest position, the front face of the installation frame is parallel to the side of the same position frame connected to the swing axis. When the connecting rod slides to the highest position, the front face of the installation frame is perpendicular to the side of the same position frame connected to the swing axis.
9. A multi-directional monitoring structure according to claim 8, characterized in that: The length of the swing arm corresponds to the length of the adjustment slot.
10. A multi-directional monitoring system, the system using the multi-directional monitoring structure according to any one of claims 1 to 9, characterized in that: The monitoring system also includes a mobile terminal and a control platform terminal. The mobile terminal is a walking trolley, which can lift the multi-directional monitoring structure to a high position through a lifting frame. The control platform terminal is used to communicate data with the near-infrared coal moisture content sensor in the multi-directional monitoring structure.