A laser radar coal quantity monitoring device for a conveyor belt

Abstract

The utility model relates to the field of coal conveying belt coal quantity intelligent monitoring equipment, especially a kind of laser radar coal quantity monitoring device for conveying belt, including mounting bracket, connecting rod and laser radar coal quantity monitor etc., mounting bracket top is rotatably connected with crossbeam support, two sliding blocks are slidably connected in crossbeam support lower end, sliding block lower end is connected with moving frame, laser radar coal quantity monitor is located in two moving frames, connecting rod passes through sliding block and moving frame, connecting rod top both ends are connected with top block, top top block is extruded with crossbeam support, bottom top block is extruded with laser radar coal quantity monitor, and the adjusting assembly for limiting the rotation angle of crossbeam support is arranged on the top of mounting bracket. Through the elastic deformation of elastic pad and protective pad, low-frequency vibration impact generated when conveying belt runs is absorbed, vibration transmission to monitor body is reduced, thereby realizing the function of effectively offsetting part vibration influence, and the purpose of improving monitoring data stability is achieved.

Description

Technical Field

[0001] This utility model relates to the field of intelligent coal quantity monitoring equipment for coal conveyor belts, and in particular to a lidar coal quantity monitoring device for conveyor belts. Background Technology

[0002] In coal production, coal quantity monitoring is a crucial link in ensuring production efficiency and safety. Traditional coal quantity monitoring often relies on manual handheld total stations or mechanical level gauges, which suffers from drawbacks such as low efficiency, large errors, and the inability to acquire real-time three-dimensional topographic data. LiDAR technology, with its non-contact measurement and high-precision three-dimensional point cloud acquisition capabilities, has become a revolutionary direction in coal quantity monitoring. It can accurately calculate material volume and dynamically update the three-dimensional model, effectively solving problems such as lagging model updates and insufficient blind zone coverage in traditional methods, and driving the transformation of coal storage management towards intelligence and digitalization.

[0003] Current lidar installations on conveyor belts often employ a U-shaped plate clamping and fixing solution. During installation, the U-shaped plate needs to be fixed to the crossbeam or bracket above the conveyor belt with screws to form a rigid connection. This structure is widely used in applications such as airborne lidar and vehicle-mounted blind spot monitoring systems.

[0004] However, the screw-fixing method prevents effective cancellation of equipment vibration, causing jitter in point cloud data and even equipment damage. Once the installation height is fixed, angle adjustment is limited; the pitch and horizontal angles of the lidar must be repositioned by removing the screws, and cannot be dynamically adjusted during operation. When the shape of the coal pile on the conveyor belt changes, the radar pitch angle needs to be manually readjusted to adapt to the optimal detection range, affecting monitoring efficiency and accuracy. Furthermore, the screw fixing is prone to loosening under long-term vibration, leading to installation misalignment and further exacerbating measurement errors, becoming a bottleneck restricting the high-precision application of lidar in industrial scenarios. Utility Model Content

[0005] To overcome the shortcomings of vibration cancellation and angle adjustment, this invention provides a lidar coal quantity monitoring device for conveyor belts, aiming to solve the aforementioned problems.

[0006] A lidar coal quantity monitoring device for a conveyor belt includes a mounting frame, a connecting rod, and a lidar coal quantity monitor. A crossbeam support is rotatably connected to the top of the mounting frame. Two sliders are slidably connected to the lower end of the crossbeam support. A movable frame is connected to the lower end of each slider. A contact plate is slidably connected to the bottom of the movable frame. A first fixing screw is threadedly connected to the bottom of the movable frame. The top of the first fixing screw is rotatably connected to the contact plate. The lidar coal quantity monitor is located within the two movable frames and is press-fitted with the contact plate. A laser probe is installed at the bottom of the lidar coal quantity monitor. The connecting rod passes through the sliders and the movable frame. Top blocks are connected to both the top and bottom ends of the connecting rod. The top block press-fits with the crossbeam support, and the bottom block press-fits with the lidar coal quantity monitor. An adjustment component for limiting the rotation angle of the crossbeam support is provided on the top of the mounting frame.

[0007] More preferably, the adjustment component includes a triangular block, splined shafts are provided at both ends of the crossbeam bracket, a connector is slidably connected inside the mounting bracket, the triangular block is slidably connected to the lower end of the connector, the triangular block is limited to the splined shaft, a return spring is sleeved on the lower end of the connector, one end of the return spring is connected to the connector, and the other end is connected to the triangular block, and a second fixing screw is threaded to the top of the mounting bracket, the second fixing screw is rotatably connected to the connector.

[0008] More preferably, a transparent plate is slidably connected to the front end of the protective box at the bottom of the lidar coal quantity monitor for protecting the laser probe.

[0009] More preferably, a light is installed at the bottom of the protective box at the bottom of the lidar coal quantity monitor.

[0010] More preferably, a protective pad is connected to the top surface of the contact plate, and the protective pad is pressed together with the lidar coal quantity monitor.

[0011] More preferably, a spring pad is connected to the side of the top block opposite to the connecting rod.

[0012] Compared with the prior art, the present invention has the following advantages: 1. Through the elastic deformation of the spring pad and protective pad, a buffer is formed between the top block and the crossbeam support, and between the contact plate and the lidar coal quantity monitor. This absorbs the low-frequency vibration impact generated during the operation of the conveyor belt, reduces the vibration transmitted to the monitor body, and thus effectively offsets part of the vibration impact, thereby improving the stability of the monitoring data.

[0013] 2. By adjusting the components, the angle of the crossbeam support can be dynamically adjusted, thereby enabling the laser radar coal quantity monitor to quickly adjust its angle without disassembling the screws, thus adapting to the monitoring needs of different coal pile shapes and improving monitoring accuracy and efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a cross-sectional view of the mounting structure of the slider and movable frame of this utility model.

[0016] Figure 3 This is a cross-sectional view showing the connection relationship between the second fixing screw and the connector of this utility model.

[0017] Figure 4 This is a schematic diagram showing the connection between the transparent plate and the lighting lamp of this utility model.

[0018] The components in the attached diagram are labeled as follows: 1. Mounting bracket, 2. Crossbeam support, 3. Moving frame, 4. Slider, 5. Connecting rod, 6. Top block, 7. Contact plate, 8. First fixing screw, 9. LiDAR coal quantity monitor, 10. Laser probe, 11. Splined shaft, 12. Triangular block, 13. Return spring, 14. Connector, 15. Second fixing screw, 16. Transparent plate, 17. Lighting lamp, 18. Protective pad, 19. Spring pad. Detailed Implementation

[0019] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] Example: A lidar coal quantity monitoring device for conveyor belts, such as... Figures 1-4As shown, the system includes a mounting frame 1, a crossbeam support 2, a movable frame 3, a slider 4, a connecting rod 5, a top block 6, a contact plate 7, a first fixing screw 8, a laser radar coal quantity monitor 9, a laser probe 10, and an adjustment assembly. The top of the mounting frame 1 is rotatably connected to the crossbeam support 2, which is made of high-strength aluminum alloy to achieve a balance between lightweight and structural strength. Two sliders 4 are slidably connected to the lower end of the crossbeam support 2, and the lower end of each slider 4 is connected to the movable frame 3. The sliders 4 have embedded polytetrafluoroethylene (PTFE) guide rails to reduce the coefficient of friction with the crossbeam support 2, ensuring smooth and unobstructed sliding. The bottom of the movable frame 3 is slidably connected to a contact plate. The bottom of the plate 7 and the movable frame 3 are threadedly connected to the first fixing screw 8. The top of the first fixing screw 8 is rotatably connected to the contact plate 7. The laser radar coal quantity monitor 9 is located inside the two movable frames 3. The laser radar coal quantity monitor 9 is pressed and engaged with the contact plate 7. The bottom of the laser radar coal quantity monitor 9 is equipped with a laser probe 10. The connecting rod 5 passes through the slider 4 and the movable frame 3. The top and bottom ends of the connecting rod 5 are connected to the top block 6. The top block 6 is pressed and engaged with the crossbeam support 2, and the bottom block 6 is pressed and engaged with the laser radar coal quantity monitor 9. The top of the mounting frame 1 is provided with an adjustment component for limiting the rotation angle of the crossbeam support 2.

[0021] like Figure 1 and Figure 3 As shown, the adjustment assembly includes a splined shaft 11, a triangular block 12, a return spring 13, a connector 14, and a second fixing screw 15. Splined shafts 11 are provided at both ends of the crossbeam bracket 2. A connector 14 is slidably connected inside the mounting bracket 1. A triangular block 12 is slidably connected to the lower end of the connector 14. The triangular block 12 is limited to the splined shaft 11. A return spring 13 is sleeved on the lower end of the connector 14. One end of the return spring 13 is connected to the connector 14, and the other end is connected to the triangular block 12. A second fixing screw 15 is threadedly connected to the top of the mounting bracket 1. The second fixing screw 15 is rotatably connected to the connector 14. The head of the second fixing screw 15 is designed with a plum blossom-shaped knob, which is convenient for workers to tighten by hand.

[0022] like Figure 4 As shown, it also includes a transparent plate 16. The transparent plate 16 is slidably connected to the front end of the protective box at the bottom of the lidar coal quantity monitor 9 for protecting the lidar probe 10.

[0023] like Figure 4 As shown, it also includes a lighting lamp 17. The lighting lamp 17 is installed at the bottom of the protective box at the bottom of the lidar coal quantity monitor 9.

[0024] like Figure 2 As shown, it also includes a protective pad 18. The top surface of the contact plate 7 is connected to the protective pad 18. The protective pad 18 is squeezed together with the lidar coal quantity monitor 9. The protective pad 18 is made of EPDM foam material and has an anti-slip texture on its surface.

[0025] like Figure 2As shown, it also includes a spring pad 19. The top block 6 is connected to the side opposite to the connecting rod 5 with the spring pad 19. The spring pad 19 is made of 65Mn spring steel and is stamped to maintain long-term elastic deformation capability and avoid clamping loosening due to fatigue failure.

[0026] After confirming the relative installation positions of the conveyor belt and mounting frame 1, the operator determines the installation point of the lidar coal quantity monitor 9 based on the actual position of the conveyor belt. During operation, first manually push one side of the movable frame 3 to allow the slider 4 to slide along the guide rail of the crossbeam support 2 to adjust the spacing. Then, embed one side of the lidar coal quantity monitor 9 into the movable frame 3. Next, push the other side of the movable frame 3 closer to and clamp the lidar coal quantity monitor 9. At this time, use a wrench to tighten the first fixing screw 8 one by one. The screw rotation pushes the contact plate 7 towards the lidar coal quantity monitor 9. The protective pad 18 is compressed and undergoes elastic deformation to form a buffer layer, restricting the horizontal sliding of the lidar coal quantity monitor 9. After the top block 6 of the lidar coal quantity monitor 9 is compressed, the thrust is transmitted through the connecting rod 5. The top block 6 presses upward against the crossbeam support 2, and the elastic pads 19 on both sides deform synchronously under pressure: the top elastic pad 19 restricts the relative displacement of the slider 4 and the crossbeam support 2 through deformation, and the bottom elastic pad 19 restricts the sliding of the lidar coal quantity monitor 9 through elastic deformation, offsetting some of the vibration and impact of the conveyor belt operation.

[0027] When the angle of the lidar coal quantity monitor 9 needs to be adjusted, the operator first loosens the second fixing screw 15. The connecting piece 14 slides upward within the mounting bracket 1, and the return spring 13 releases its elastic potential energy to push the triangular block 12 away from the spline shaft 11. At this time, the crossbeam support 2 can be manually rotated. During the rotation of the spline shaft 11, the triangular block 12 is pressed, causing it to slide within the mounting bracket 1. When the lidar coal quantity monitor 9 reaches the required angle, the second fixing screw 15 is tightened again. The connecting piece 14 moves downward, compressing the return spring 13 and pushing the triangular block 12 into the corresponding groove of the spline shaft 11. Through the mechanical limiting structure of the spline shaft 11 and the triangular block 12, the rotational freedom of the spline shaft 11 is fixed, ultimately achieving stable adjustment of the angle between the crossbeam support 2 and the lidar coal quantity monitor 9.

[0028] During the inspection operation, the transparent plate 16 at the front of the protective box must be removed first to ensure that the laser probe 10 can perform three-dimensional scanning without obstruction. After the operation is completed, the transparent plate 16 should be reinserted to achieve full-enclosed protection. During the operation, the lighting 17 at the bottom of the protective box can be turned on to improve the visibility of the inspection environment through auxiliary lighting, ensuring that the lidar can still accurately capture the topographic data of the coal pile on the conveyor belt under low light conditions.

[0029] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. A lidar coal quantity monitoring device for conveyor belts, characterized in that, The system includes a mounting frame (1), a connecting rod (5), and a laser radar coal quantity monitor (9). A crossbeam support (2) is rotatably connected to the top of the mounting frame (1). Two sliders (4) are slidably connected to the lower end of the crossbeam support (2). A movable frame (3) is connected to the lower end of each slider (4). A contact plate (7) is slidably connected to the bottom of the movable frame (3). A first fixing screw (8) is threadedly connected to the bottom of the movable frame (3). The top of the first fixing screw (8) is rotatably connected to the contact plate (7). The laser radar coal quantity monitor (9) is located between the two movable frames (3). Inside, the laser radar coal quantity monitor (9) is pressed and fitted with the contact plate (7). A laser probe (10) is installed at the bottom of the laser radar coal quantity monitor (9). The connecting rod (5) passes through the slider (4) and the moving frame (3). Both the top and bottom ends of the connecting rod (5) are connected to top blocks (6). The top block (6) is pressed and fitted with the crossbeam support (2). The bottom block (6) is pressed and fitted with the laser radar coal quantity monitor (9). The top of the mounting frame (1) is provided with an adjustment component for limiting the rotation angle of the crossbeam support (2).

2. A lidar coal quantity monitoring device for conveyor belts according to claim 1, characterized in that, The adjustment assembly includes a triangular block (12), and spline shafts (11) are provided at both ends of the crossbeam bracket (2). A connector (14) is slidably connected inside the mounting bracket (1). The lower end of the connector (14) is slidably connected to the triangular block (12). The triangular block (12) is limited to the spline shaft (11). A return spring (13) is sleeved on the lower end of the connector (14). One end of the return spring (13) is connected to the connector (14), and the other end is connected to the triangular block (12). A second fixing screw (15) is threadedly connected to the top of the mounting bracket (1). The second fixing screw (15) is rotatably connected to the connector (14).

3. A lidar coal quantity monitoring device for a conveyor belt according to claim 2, characterized in that, A transparent plate (16) is slidably connected to the front end of the protective box at the bottom of the lidar coal quantity monitor (9) for protecting the laser probe (10).

4. A lidar coal quantity monitoring device for a conveyor belt according to claim 3, characterized in that, The bottom of the protective box of the lidar coal quantity monitor (9) is equipped with a light (17).

5. A lidar coal quantity monitoring device for a conveyor belt according to claim 4, characterized in that, The top surface of the contact plate (7) is connected to a protective pad (18), which is pressed together with the laser radar coal quantity monitor (9).

6. A lidar coal quantity monitoring device for a conveyor belt according to claim 5, characterized in that, The top block (6) is connected to a spring pad (19) on the side opposite to the connecting rod (5).

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