Electric protection device of laser coal checking instrument

Abstract

The utility model provides an electric protection device of a laser coal stocktaking instrument, an opening is formed in a laser coal stocktaking instrument protection cover, a laser coal stocktaking instrument protection plate is arranged at the opening of the laser coal stocktaking instrument in a sliding mode, and the laser coal stocktaking instrument is arranged in the laser coal stocktaking instrument protection cover. The laser coal stocktaking instrument first transmission part is respectively connected with the laser coal stocktaking instrument and the laser coal stocktaking instrument driving part, so that the laser coal stocktaking instrument driving part drives the laser coal stocktaking instrument to move towards or away from the laser coal stocktaking instrument opening through the laser coal stocktaking instrument first transmission part; the second transmission part of the laser coal stocktaking instrument is respectively connected with the first transmission part of the laser coal stocktaking instrument and the protection plate of the laser coal stocktaking instrument so as to drive the protection plate of the laser coal stocktaking instrument to open the opening of the laser coal stocktaking instrument when the laser coal stocktaking instrument of the laser coal stocktaking instrument moves towards the opening of the laser coal stocktaking instrument and drive the protection plate of the laser coal stocktaking instrument to close the opening of the laser coal stocktaking instrument when the laser coal stocktaking instrument is far away from the opening of the laser coal stocktaking instrument. And the laser coal checking instrument protection plate is driven to close the laser coal checking instrument opening.

Description

Technical Field

[0001] This application belongs to the technical field of laser coal counting instruments, and specifically relates to an electric protective device for a laser coal counting instrument. Background Technology

[0002] As a device used to measure parameters such as the volume and shape of coal piles, laser coal detectors play an important role in coal production, storage, and transportation. In practical applications, laser coal detectors often need to operate in complex environments, which can easily damage them, affecting their measurement accuracy and service life. Therefore, it is essential to equip laser coal detectors with an effective protective device.

[0003] Existing laser coal reconciliation devices typically use metal boxes as protective covers. These covers must be opened manually before and after use. Since laser coal reconciliation devices are often used in harsh environments, operators must enter these environments, posing a threat to their health and presenting significant safety risks. Utility Model Content

[0004] Therefore, the technical problem to be solved by this application is to provide an electric protective device for a laser coal panning instrument, which can reduce manual operation and reduce threats to health and safety risks.

[0005] To address the aforementioned problems, this application provides an electric protective device for a laser coal reconciliation apparatus, comprising a protective housing, a drive unit, a first transmission unit, a second transmission unit, and a protective plate. The protective housing has an opening, and the protective plate is slidably disposed at the opening. The laser coal reconciliation apparatus is disposed within the protective housing. The first transmission unit is connected to both the laser coal reconciliation apparatus and the drive unit, such that the drive unit drives the laser coal reconciliation apparatus to move toward or away from the opening via the first transmission unit. The second transmission unit is connected to both the first transmission unit and the protective plate, such that when the laser coal reconciliation apparatus moves toward the opening, it drives the protective plate to open the opening, and when the laser coal reconciliation apparatus moves away from the opening, it drives the protective plate to close the opening.

[0006] Optionally, the first transmission part includes a first threaded rod, one end of which is rotatably connected to the protective cover, and the other end is connected to the drive part, so that the drive part drives the first threaded rod to rotate. A sliding component is threadedly connected to the first threaded rod, and the laser coal detector is connected to the sliding component to slide along the extension direction of the first threaded rod with the sliding component.

[0007] Optionally, the sliding assembly includes a first threaded sleeve and a stabilizing rod. The first threaded sleeve is threadedly connected to the first threaded rod, and the stabilizing rod is connected to the first threaded sleeve. A sliding groove is provided on the inner wall of the protective cover. The sliding groove extends in the same direction as the first threaded rod. The first end of the stabilizing rod is slidably disposed in the sliding groove, and the second end of the stabilizing rod is connected to the laser coal detector.

[0008] Optionally, the second transmission part includes a second threaded rod, which is drivenly connected to the first threaded rod so that the second threaded rod rotates synchronously with the first threaded rod. A second threaded sleeve is threadedly connected to the second threaded rod, and the protective plate is connected to the second threaded sleeve. The protective plate slides against the protective cover so that the protective plate can move along the extension direction of the second threaded sleeve.

[0009] Optionally, the first threaded rod is provided with a first bevel gear, one end of the second threaded rod is rotatably connected to the protective cover, and the other end is provided with a second bevel gear, wherein the first bevel gear meshes with the second bevel gear.

[0010] Optionally, the first threaded rod and the second threaded rod are arranged perpendicularly, and the laser coal detector and the opening are arranged opposite to each other in the extension direction of the first threaded rod.

[0011] Optionally, a movable plate is provided on the second end of the stabilizing rod, and an mounting plate is provided on the movable plate, with the laser coal detector mounted on the mounting plate; a positioning groove is provided on the top of the movable plate, and the mounting plate is positioned within the positioning groove.

[0012] Optionally, the mounting plate includes a first side and a second side opposite to each other. An extension groove is provided on both the first side and the second side. A limiting plate is slidably arranged in the extension groove. A spring is connected between the limiting plate and the bottom of the extension groove. A limiting groove is provided on the groove wall of the positioning groove. The limiting groove and the limiting plate are arranged in a one-to-one correspondence.

[0013] Optionally, a lever is provided at the top of the limiting plate, and a through groove is provided in the mounting plate along the thickness direction. The lever passes through the through groove upward and protrudes from the top surface of the mounting plate.

[0014] Optionally, the electric protective device of the laser coal detector also includes a bracket, and the protective cover is mounted on the bracket.

[0015] Beneficial effects

[0016] The electric protective device for a laser coal receptacle provided in this embodiment of the invention, by setting up a drive unit, a first transmission unit, and a second transmission unit, and cooperating with the drive unit, the first transmission unit, and the second transmission unit, enables the protective plate to open the opening when the laser coal receptacle moves toward the opening, thereby allowing the laser coal receptacle to inspect the exterior of the protective cover. When the laser coal receptacle moves away from the opening, the protective plate closes the opening, effectively preventing the intrusion of pollutants such as dust and coal ash, providing a clean and stable storage environment for the laser coal receptacle, reducing the risk of equipment damage due to contamination, and extending its service life. The automated operation achieved by setting up the drive unit, the first transmission unit, and the second transmission unit avoids manual operation of the protective plate by operators, reduces the exposure time of personnel in harsh environments, and lowers the threat to health and safety risks. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of the protective cover according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the structure of the laser coal detector, the moving plate, and the mounting plate according to an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of the structure of the movable plate according to an embodiment of this application;

[0020] Figure 4 This is a schematic diagram of the structure of the movable board and the mounting board according to an embodiment of this application;

[0021] Figure 5 This is a structural schematic diagram of the door body in the protective cover of this application embodiment;

[0022] Figure 6 This is a schematic diagram of the structure of the electric protective device according to an embodiment of this application.

[0023] The reference numerals in the attached figures are as follows:

[0024] 1. Protective cover; 2. Drive unit; 3. First threaded rod; 4. First threaded sleeve; 5. Stabilizing rod; 6. Laser coal meter; 71. Moving plate; 72. Mounting plate; 73. Extension groove; 74. Limiting plate; 75. Spring; 76. Positioning groove; 77. Limiting groove; 78. Toggle rod; 79. Through groove; 8. Slide groove; 9. Sliding block; 10. First bevel gear; 11. Second threaded rod; 12. Second bevel gear; 13. Second threaded sleeve; 14. Protective plate; 15. Support. Detailed Implementation

[0025] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0029] See also Figures 1 to 6 As shown in the embodiment of this application, an electric protective device for a laser coal reamer is provided, including a protective cover 1, a drive unit 2, a first transmission unit, a second transmission unit, and a protective plate 14. The protective cover 1 has an opening, and the protective plate 14 is slidably disposed at the opening. The laser coal reamer 6 is disposed inside the protective cover 1. The first transmission unit is connected to the laser coal reamer 6 and the drive unit 2 respectively, so that the drive unit 2 drives the laser coal reamer 6 to move toward or away from the opening through the first transmission unit. The second transmission unit is connected to the first transmission unit and the protective plate 14 respectively, so that when the laser coal reamer 6 moves toward the opening, it drives the protective plate 14 to open the opening, and when the laser coal reamer 6 moves away from the opening, it drives the protective plate 14 to close the opening.

[0030] By configuring a drive unit 2, a first transmission unit, and a second transmission unit, and coordinating these units, the protective plate 14 opens when the laser coal reconnaissance device 6 moves towards the opening, allowing the laser coal reconnaissance device 6 to inspect the exterior of the protective casing 1. When the laser coal reconnaissance device 6 moves away from the opening, the protective plate 14 closes the opening, effectively preventing the intrusion of dust, coal ash, and other contaminants. This provides a clean and stable storage environment for the laser coal reconnaissance device 6, reducing the risk of damage due to contamination and extending its service life. The automated operation achieved through the drive unit 2, the first transmission unit, and the second transmission unit eliminates the need for manual operation of the protective plate 14, reducing the exposure time of personnel in harsh environments and lowering threats to health and safety risks.

[0031] The protective cover 1 can be roughly a hollow cuboid structure, and the drive unit 2, the first transmission unit, the second transmission unit and the laser coal detector 6 are arranged in the hollow space inside the protective cover 1.

[0032] The protective cover 1 has an opening, and when the protective plate 14 opens the opening, the internal space of the protective cover 1 is connected to the external space of the protective cover 1 through the opening.

[0033] The drive unit 2 can be a servo motor. The first transmission unit is connected to the servo motor, so that the servo motor drives the first transmission unit to operate. The second transmission unit is connected to the first transmission unit, so that the second transmission unit operates synchronously with the first transmission unit.

[0034] The first transmission part includes a first threaded rod 3. One end of the first threaded rod 3 is rotatably connected to the protective cover 1, and the other end is connected to the drive part 2 so that the drive part 2 drives the first threaded rod 3 to rotate. A sliding component is threadedly connected to the first threaded rod 3. The laser coal detector 6 is connected to the sliding component so that it slides along the extension direction of the first threaded rod 3.

[0035] By setting the first threaded rod 3 and the sliding assembly, the laser coal detector 6 can be driven to move stably, reducing shaking or deviation, thereby ensuring the accuracy of the measurement work.

[0036] One end of the first threaded rod 3 is rotatably connected to the inner wall of the protective cover 1 via a rotating seat, and the other end of the first threaded rod 3 is connected to the motor shaft of the servo motor.

[0037] The sliding component is threadedly connected to the first threaded rod 3. The driving unit 2 drives the first threaded rod 3 to rotate. The sliding component can abut against other parts, such as the inner wall of the protective cover 1, thereby limiting the sliding component in the circumferential direction and preventing it from rotating. The driving unit 2 drives the first threaded rod 3 to rotate, and through the thread, the sliding component slides in the extension direction of the first threaded rod 3.

[0038] The first threaded rod 3 is horizontally positioned, and the protective plate 14 is positioned on the front side of the protective cover 1. The first threaded rod 3 extends in the front-back direction. The laser coal detector 6 moves in the front-back direction.

[0039] The sliding assembly includes a first threaded sleeve 4 and a stabilizing rod 5. The first threaded sleeve 4 is threadedly connected to the first threaded rod 3, and the stabilizing rod 5 is connected to the first threaded sleeve 4. A sliding groove 8 is provided on the inner wall of the protective cover 1. The sliding groove 8 extends in the same direction as the first threaded rod 3. The first end of the stabilizing rod 5 is slidably disposed in the sliding groove 8, and the second end of the stabilizing rod 5 is connected to the laser coal detector 6.

[0040] By setting the stabilizing rod 5 and the sliding groove 8, when the first threaded sleeve 4 moves with the first threaded rod 3, the stabilizing rod 5 slides along the sliding groove 8, reducing the shaking and offset of the laser coal detector 6 during movement and ensuring that the laser coal detector 6 moves smoothly and linearly in the extension direction of the first threaded rod 3. By setting the sliding groove 8, the stabilizing rod 5 can also be limited in the circumferential direction of the first threaded sleeve 4, preventing the stabilizing rod 5 and the laser coal detector 6 from rotating.

[0041] The first threaded sleeve 4 is threaded onto the outer circumference of the first threaded rod 3.

[0042] The chute 8 is installed on the top inner wall of the protective cover 1, with its opening facing downwards. The chute 8 extends in the same direction as the laser coal detector 6, that is, it extends in the front-to-back direction. The chute 8 limits the movement of the stabilizer 5 in the left-to-right direction.

[0043] Among them, the stabilizer bar 5 is set vertically, and the slide groove 8 is set horizontally.

[0044] The first end of the stabilizer 5 is the top end, and a slider 9 is provided on the top end of the stabilizer 5. The slider 9 is slidably disposed in the groove 8. The second end of the stabilizer 5 is the bottom end, and the bottom end of the stabilizer 5 is connected to the laser coal detector 6.

[0045] The second transmission part includes a second threaded rod 11, which is connected to the first threaded rod 3 so that the second threaded rod 11 rotates synchronously with the first threaded rod 3. A second threaded sleeve 13 is threadedly connected to the second threaded rod 11. A protective plate 14 is connected to the second threaded sleeve 13. The protective plate 14 slides against the protective cover 1 so that the protective plate 14 can move along the extension direction of the second threaded sleeve 13.

[0046] The second threaded rod 11 is connected to the first threaded rod 3, and the protective plate 14 is connected to the second threaded sleeve 13. When the first threaded rod 3 rotates and drives the laser coal detector 6 to move, the second threaded rod 11 rotates synchronously, driving the protective plate 14 to move through the second threaded sleeve 13. This achieves the function that when the laser coal detector 6 moves towards the opening, the protective plate 14 automatically opens the opening; when the laser coal detector 6 moves away from the opening, the protective plate 14 automatically closes the opening, ensuring that the laser coal detector 6 is open when in use and closed when not in use, effectively blocking external pollutants and preventing the laser coal detector 6 from being corroded by dust, coal ash, etc. when not in operation, thus extending the service life of the equipment.

[0047] The second threaded rod 11 is vertically arranged.

[0048] The protective plate 14 slides against the protective cover 1, thereby limiting the protective plate 14 in the horizontal direction, thus preventing the second threaded sleeve 13 from rotating on the second threaded rod 11, and thus allowing the protective plate 14 to move along the second threaded rod 11 in the vertical direction with the second threaded sleeve 13.

[0049] Specifically, the protective plate 14 abuts against the left and right edges of the opening, that is, the protective plate 14 abuts against the protective cover 1 on the left and right sides of the opening, and can slide in the vertical direction.

[0050] The second threaded sleeve 13 is threaded onto the outer circumference of the second threaded rod 11.

[0051] The protective plate 14 is fixedly connected to the second threaded sleeve 13 and moves up and down with the second threaded sleeve 13.

[0052] Specifically, when the first threaded rod 3 rotates and moves the laser coal detector 6 toward the opening, the second threaded rod 11 rotates synchronously, causing the protective plate 14 to move downward, thereby opening the opening. When the first threaded rod 3 rotates and moves the laser coal detector 6 away from the opening, the second threaded rod 11 rotates synchronously, causing the protective plate 14 to move upward, thereby closing the opening.

[0053] The first threaded rod 3 is provided with a first bevel gear 10. One end of the second threaded rod 11 is rotatably connected to the protective cover 1, and the other end is provided with a second bevel gear 12. The first bevel gear 10 and the second bevel gear 12 mesh with each other, so that the first threaded rod 3 can stably and synchronously drive the second threaded rod 11 to rotate.

[0054] The first bevel gear 10 is coaxially arranged with the first threaded rod 3. The second bevel gear 12 is coaxially arranged with the second threaded rod 11.

[0055] One end of the second threaded rod 11 is rotatably connected to the bottom inner wall of the protective cover 1 via a rotating seat.

[0056] The first threaded rod 3 and the second threaded rod 11 are arranged perpendicularly, and the laser coal detector 6 and the opening are arranged opposite to each other in the extension direction of the first threaded rod 3.

[0057] When the laser coal detector 6 moves forward to its limit position, it can move out of the protective cover 1 through the opening.

[0058] A movable plate 71 is provided on the second end of the stabilizer bar 5, and a mounting plate 72 is provided on the movable plate 71. The laser coal detector 6 is mounted on the mounting plate 72. A positioning groove 76 is provided on the top of the movable plate 71, and the mounting plate 72 is placed in the positioning groove 76.

[0059] The movable plate 71 is located on the side of the stabilizer 5 near the opening. In other words, the movable plate 71 is located in front of the stabilizer 5, so that when the laser coal detector 6 moves forward to the limit position, the laser coal detector 6 can move through the opening to the outside of the protective cover 1.

[0060] The movable plate 71 and the mounting plate 72 are horizontally positioned. The laser coal detector 6 is positioned on top of the mounting plate 72.

[0061] Specifically, the top of the movable plate 71 is provided with a positioning groove 76, the depth direction of the positioning groove 76 is vertical, and the mounting plate 72 is installed into the positioning groove 76 in a vertically downward direction.

[0062] Mounting plate 72 includes a first side and a second side, both of which have extension grooves 73. A limiting plate 74 is slidably disposed in the extension groove 73. A spring 75 is connected between the limiting plate 74 and the bottom of the extension groove 73. A limiting groove 77 is provided on the wall of the positioning groove 76. The limiting groove 77 corresponds to the limiting plate 74.

[0063] The first side and the second side can be the front and rear sides of the mounting plate 72, or the left and right sides.

[0064] The extension groove 73 is opened in the horizontal direction towards the inside of the mounting plate 72, and grooves are formed on the first and second sides opposite to the extension groove 73, respectively.

[0065] The limiting plate 74 slides horizontally within the extension groove 73, specifically along the groove opening and bottom of the extension groove 73, that is, it can slide from the groove body to the groove opening, or from the groove opening to the groove bottom.

[0066] The limiting plate 74 has a limiting block protruding outward on its side wall, and a limiting stop is provided on the inner wall of the extension groove 73. The limiting stop limits the limiting plate 74 in the extension groove 73, thus preventing the limiting plate 74 from coming out of the extension groove 73.

[0067] Among them, multiple springs 75 are connected between the limiting plate 74 and the bottom of the extension groove 73, and the multiple springs 75 are arranged along the width direction of the limiting plate 74.

[0068] In this configuration, the spring 75 between the limiting plate 74 and the bottom of the extension groove 73 is in a compressed state, applying an elastic force away from the bottom of the extension groove 73 to the limiting plate 74. This causes the limiting block on the limiting plate 74 to abut against the limiting stop on the inner wall of the extension groove 73. After the mounting plate 72 is assembled into the positioning groove 76 and the limiting plate 74 is aligned with the limiting groove 77, the limiting plate 74 returns to its original position due to the elastic force of the spring 75 after the pressure applied by the operator is removed. This pushes the limiting plate 74 into the limiting groove 77. Through the stopping action of the groove wall of the limiting groove 77, the limiting plate 74 is circumferentially fixed, thereby fixing the mounting plate 72 in the positioning groove 76 on the moving plate 71.

[0069] A lever 78 is provided on the top of the limiting plate 74, and a through groove 79 is provided on the mounting plate 72 along the thickness direction. The lever 78 passes through the through groove 79 upward and protrudes from the top surface of the mounting plate 72.

[0070] The through slot 79 is opened along the moving direction of the lever 78.

[0071] Specifically, the mounting plate 72 is vertical along its thickness direction. The through groove 79 is formed in the limiting groove 77 on the groove wall above the limiting plate 74, and extends to the top surface of the mounting plate 72.

[0072] The lever 78 passes upward through the through slot 79 and protrudes from the top surface of the mounting plate 72, making it easy for the operator to touch.

[0073] The electric protective device of the laser coal detector also includes a bracket 15, and the protective cover 1 is mounted on the bracket 15 and then mounted on the ground through the bracket 15.

[0074] During operation, the operator starts the drive motor, which rotates the first threaded rod 3. This rotation, via the first threaded sleeve 4, moves the laser coal detector 6. Simultaneously, the first bevel gear 10 drives the second bevel gear 12, which in turn rotates the second threaded rod 11. The second threaded rod 11, through the second threaded sleeve 13, moves the protective plate 14 downwards, causing the protective plate 14 to descend as the laser coal detector 6 moves out of its position. Monitoring can then be performed once the laser coal detector 6 reaches its limit position. When the laser coal detector 6 needs replacement or maintenance, both levers 78 can be pressed horizontally inwards simultaneously. These levers 78 move the limiting plate 74, disengaging it from the limiting groove 77, allowing the laser coal detector 6 and mounting plate 72 to be removed from the moving plate 71. When installing the laser coal detector 6, by simultaneously pressing the two levers 78 horizontally inward, the mounting plate 72 is placed into the positioning groove 76 on the moving plate 71. When the levers 78 are released, under the elastic force of the spring 75, the limiting plate 74 extends into the limiting groove 77, which can fix the laser coal detector 6 and the mounting plate 72 on the moving plate 71.

[0075] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0076] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. An electric protective device for a laser coal counting instrument, characterized in that, The device includes a protective cover (1), a drive unit (2), a first transmission unit, a second transmission unit, and a protective plate (14). The protective cover (1) has an opening, and the protective plate (14) is slidably disposed at the opening. A laser coal reamer (6) is disposed inside the protective cover (1). The first transmission unit is connected to the laser coal reamer (6) and the drive unit (2) respectively, so that the drive unit (2) drives the laser coal reamer (6) to move toward or away from the opening through the first transmission unit. The second transmission unit is connected to the first transmission unit and the protective plate (14) respectively, so that when the laser coal reamer (6) moves toward the opening, it drives the protective plate (14) to open the opening, and when the laser coal reamer (6) moves away from the opening, it drives the protective plate (14) to close the opening.

2. The electric protective device for the laser coal counting instrument according to claim 1, characterized in that, The first transmission part includes a first threaded rod (3), one end of which is rotatably connected to the protective cover (1), and the other end is connected to the drive part (2) so that the drive part (2) drives the first threaded rod (3) to rotate. A sliding component is threadedly connected to the first threaded rod (3), and the laser coal detector (6) is connected to the sliding component so that it slides along the extension direction of the first threaded rod (3) with the sliding component.

3. The electric protective device for the laser coal counting instrument according to claim 2, characterized in that, The sliding assembly includes a first threaded sleeve (4) and a stabilizing rod (5). The first threaded sleeve (4) is threadedly connected to the first threaded rod (3), and the stabilizing rod (5) is connected to the first threaded sleeve (4). A sliding groove (8) is provided on the inner wall of the protective cover (1). The sliding groove (8) extends in the same direction as the first threaded rod (3). The first end of the stabilizing rod (5) is slidably disposed in the sliding groove (8), and the second end of the stabilizing rod (5) is connected to the laser coal detector (6).

4. The electric protective device for the laser coal counting instrument according to claim 2, characterized in that, The second transmission part includes a second threaded rod (11), which is connected to the first threaded rod (3) so that the second threaded rod (11) rotates synchronously with the first threaded rod (3). A second threaded sleeve (13) is threadedly connected to the second threaded rod (11). The protective plate (14) is connected to the second threaded sleeve (13). The protective plate (14) slides against the protective cover (1) so that the protective plate (14) can move along the extension direction of the second threaded sleeve (13) with the second threaded sleeve (13).

5. The electric protective device for the laser coal counting instrument according to claim 4, characterized in that, The first threaded rod (3) is provided with a first bevel gear (10), one end of the second threaded rod (11) is rotatably connected to the protective cover (1), and the other end is provided with a second bevel gear (12). The first bevel gear (10) meshes with the second bevel gear (12).

6. The electric protective device for the laser coal counting instrument according to claim 4, characterized in that, The first threaded rod (3) is arranged perpendicularly to the second threaded rod (11), and the laser coal detector (6) and the opening are arranged opposite to each other in the extension direction of the first threaded rod (3).

7. The electric protective device for the laser coal counting instrument according to claim 3, characterized in that, A movable plate (71) is provided on the second end of the stabilizer (5), and an mounting plate (72) is provided on the movable plate (71). The laser coal detector (6) is mounted on the mounting plate (72). The top of the movable plate (71) is provided with a positioning groove (76), and the mounting plate (72) is disposed in the positioning groove (76).

8. The electric protective device for the laser coal counting instrument according to claim 7, characterized in that, The mounting plate (72) includes a first side and a second side opposite to each other. An extension groove (73) is provided on both the first side and the second side. A limiting plate (74) is slidably arranged in the extension groove (73). A spring (75) is connected between the limiting plate (74) and the bottom of the extension groove (73). A limiting groove (77) is provided on the groove wall of the positioning groove (76). The limiting groove (77) is provided in a one-to-one correspondence with the limiting plate (74).

9. The electric protective device for the laser coal counting instrument according to claim 8, characterized in that, The top of the limiting plate (74) is provided with a lever (78), and the mounting plate (72) has a through groove (79) along the thickness direction. The lever (78) passes upward through the through groove (79) and protrudes from the top surface of the mounting plate (72).

10. The electric protective device for the laser coal counting instrument according to claim 1, characterized in that, The electric protective device of the laser coal detector also includes a bracket (15), and the protective cover (1) is mounted on the bracket (15).

Images