Control system of belt conveyor for coal mine

Abstract

The utility model belongs to the technical field of coal mine transportation, and relates to a control system of a belt conveyor for a coal mine, which comprises a conveying belt, a power belt wheel arranged on an inner ring of the conveying belt, a reversing belt wheel arranged at the other end of the inner ring of the conveying belt, and a tensioning belt wheel and an adjusting belt wheel arranged in the middle of the inner ring of the conveying belt. Limiting guide rails are arranged below the two sides of the conveying belt. According to the control device of the belt conveyor for the coal mine, firstly, a friction plate is separated from a wing plate, the variable length of a length driving telescopic rod is adjusted, the length needing to be adjusted is equally divided into the number of telescopic sleeves on the single side, the variable length of the telescopic sleeves is determined, and adjustment is started from the telescopic sleeve on one side of a power belt wheel; and after the adjustment is finished, the friction plate is in contact with the wing plate, so that the length of the conveying belt can be adjusted while the distribution distance of the belt supporting rollers is changed, and the problem that the conveying belt is partially suspended and is easy to incline after being extended is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of coal mine transportation technology, and in particular relates to a control system for a belt conveyor used in coal mines. Background Technology

[0002] Coal is typically transported to coal storage yards via conveyor belts. In coal transportation, coal is directly moved from coal mines or out of mines via conveyor belts. Conveyor belts are also commonly used for coal transfer in open-air locations. In the prior art, patent (CN105564902B) discloses a retractable conveyor belt, including a slide rail. Tensioning rollers are movably mounted in the inner cavities at both ends of the slide rail via shafts. The tensioning rollers are fixedly connected to a spring via a connecting rod. The lower part of the slide rail is fixedly connected to a frame. A reversing wheel is fixedly mounted on the upper side of the middle of the frame. A motor is fixedly mounted on the right side of the frame and movably connected to a fixed conveyor wheel via a transmission device. A control panel is fixedly mounted on the right end of the frame, and a controller is fixedly mounted on the lower side of the control panel. Operating buttons are mounted on the front of the control panel. An electric push rod is fixedly mounted on the left side of the frame, and the left end of the electric push rod is fixedly connected to a moving conveyor wheel via a bracket. A conveyor belt is movably mounted on the outer side of the moving conveyor wheel.

[0003] The proposed technical solution allows for horizontal extension or shortening, enabling quick and flexible adjustment of the conveyor belt length for easy loading and unloading. However, coal conveying requires bottom support, and the conveyor belt in this patent becomes suspended at both ends after unfolding to the sides, causing tilting during coal transport. Therefore, we propose a control system for a belt conveyor used in coal mines. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing a control system for a belt conveyor used in coal mines, which solves the problem of insufficient support for the unfolded portion of the existing conveyor belt.

[0005] In view of this, the present invention provides a control system for a belt conveyor for coal mines, including a conveyor belt, a power pulley at the inner circle of the conveyor belt, a reversing pulley at the other end of the inner circle of the conveyor belt, a tension pulley and an adjusting pulley at the center of the inner circle of the conveyor belt, limit guide rails at the lower sides of both sides of the conveyor belt, support rods slidably connected above the limit guide rails, two symmetrical support rods connected by a belt support roller, adjacent support rods fixedly connected by a telescopic sleeve, the last two support rods rotatably connected to the reversing pulley, extension frames rotatably connected to both sides of the reversing pulley, the extension frames slidably connected to the limit guide rails, a connecting frame rotatably connected to the center of the adjusting pulley, a telescopic rod fixedly installed at the end of the connecting frame away from the adjusting pulley, the telescopic rod being parallel to the limit guide rails, the fixed ends of the telescopic rod being fixedly connected to the limit guide rails on both sides by connecting rods, wherein an extension rod for supporting the tension pulley is fixedly installed above the two connecting rods.

[0006] Preferably, the support rod is provided with snap-fit ​​grooves on both sides, and snap-fit ​​blocks are fixedly installed on both the fixed end and the free end of the telescopic sleeve, with the snap-fit ​​blocks inserted into the snap-fit ​​grooves.

[0007] Preferably, the extension frame includes a frame body, and equidistant sliding blocks are fixedly installed at the bottom end of the frame body. The sliding blocks are slidably connected to the outer surface of the limiting guide rail.

[0008] Preferably, the outer side of the limiting guide rail is provided with a wing plate, the inside of the sliding block is provided with a friction plate that is slidably connected, the friction plate is located below the wing plate, and the outer side of the sliding block is provided with a protrusion parallel to the bottom end of the sliding guide rail.

[0009] Preferably, a power source is provided on one side of the power pulley, and a head frame is provided at the bottom of the power source.

[0010] Preferably, the two ends of the adjusting pulley are rotatably connected to lifting rods, and the lifting rods are slidably connected to the limiting guide rail.

[0011] Preferably, the upper part of the limiting guide rail is provided with equidistant limiting strips, and the support rod, extension frame and lifting rod that are slidably connected to the limiting guide rail are all provided with grooves that are adapted to the limiting strips.

[0012] The beneficial effects of this utility model are:

[0013] 1. The control system of this coal mine belt conveyor first separates the friction plate from the wing plate, and then adjusts the length of the telescopic rod by adjusting the length of the drive. The length to be adjusted is divided equally among the number of telescopic sleeves on one side, and the length of the telescopic sleeve is determined. The adjustment starts from the telescopic sleeve on one side of the drive pulley and continues until the last telescopic sleeve. The adjustment of the telescopic rod is synchronized with this adjustment. After the adjustment is completed, the friction plate contacts the wing plate, so that the length of the conveyor belt can be adjusted while changing the distribution distance of the support rollers, thus avoiding the problem that the part of the conveyor belt is suspended and prone to tilting after the belt is extended.

[0014] 2. The control system of the belt conveyor for coal mine has locking grooves on both sides of the support rod. The fixed end and free end of the telescopic sleeve are fixedly installed with locking blocks, which are inserted into the locking grooves. This arrangement facilitates the connection between the telescopic sleeve and the support rod. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the conveyor belt connection in this utility model;

[0017] Figure 3 This is a schematic diagram of the telescopic rod connection of this utility model;

[0018] Figure 4 This is a schematic diagram of the support rod connection in this utility model;

[0019] Figure 5 This is a schematic diagram of the extension frame connection in this utility model;

[0020] Figure 6 This is a schematic diagram of the limiting guide rail in this utility model.

[0021] The markings in the diagram are as follows:

[0022] 1. Conveyor belt; 2. Power pulley; 3. Reversing pulley; 4. Tensioning pulley; 5. Adjusting pulley; 6. Limiting guide rail; 7. Support rod; 8. Telescopic sleeve; 9. Extension frame; 10. Power source; 11. Head frame; 12. Connecting frame; 13. Telescopic rod; 14. Connecting rod; 15. Belt roller; 16. Extension rod; 17. Locking groove; 18. Locking block; 19. Wing plate; 20. Lifting rod; 21. Limiting strip; 901. Frame body; 902. Sliding block; 903. Friction plate. Detailed Implementation

[0023] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0024] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0025] The control system of the belt conveyor for coal mine disclosed in this application includes a conveyor belt 1. A power pulley 2 is provided on the inner ring of the conveyor belt 1. A reversing pulley 3 is provided at the other end of the inner ring of the conveyor belt 1. A tension pulley 4 and an adjusting pulley 5 are provided in the middle of the inner ring of the conveyor belt 1. Limiting guide rails 6 are provided on the lower sides of both sides of the conveyor belt 1. Support rods 7 are slidably connected above the limiting guide rails 6. Two symmetrical support rods 7 are connected by a belt support roller 15. Adjacent support rods 7 are fixedly connected by a telescopic sleeve 8.

[0026] In this embodiment, the telescopic sleeve 8 can be either a hydraulic or electromagnetic telescopic sleeve. All telescopic sleeves are controlled by a controller to change their telescopic length and telescopic time. The last two support rods 7 are rotatably connected to the reversing pulley 3. Extension frames 9 are rotatably connected to both sides of the reversing pulley 3. Extension frames 9 are slidably connected to the limiting guide rail 6. A connecting frame 12 is rotatably connected to the middle of the adjusting pulley 5. A telescopic rod 13 is fixedly installed at the end of the connecting frame 12 away from the adjusting pulley 5. The telescopic rod 13 is the same as the telescopic sleeve. The telescopic rod 13 is parallel to the limiting guide rail 6. The two fixed ends of the telescopic rod 13 are fixedly connected to the limiting guide rail 6 through connecting rods 14. An extension rod 16 for supporting the tensioning pulley 4 is fixedly installed above the two connecting rods 14.

[0027] The support rod 7 has snap-fit ​​grooves 17 on both sides. The fixed end and free end of the telescopic sleeve 8 are fixedly installed with snap-fit ​​blocks 18. The snap-fit ​​blocks 18 are inserted into the snap-fit ​​grooves 17. This arrangement makes it easy to connect the telescopic sleeve 8 to the support rod 7.

[0028] The extension frame 9 includes a frame body 901. The bottom end of the frame body 901 is fixedly equipped with equidistant sliding blocks 902. The sliding blocks 902 are slidably connected to the outer surface of the limiting guide rail 6. This arrangement ensures that even if the frame body 901 partially slides out of the limiting guide rail, the sliding blocks 902 can still be located above the limiting guide rail 6.

[0029] A wing plate 19 is provided on the outer side of the limiting guide rail 6, and a friction plate 903 is provided inside the sliding block 902. The friction plate 903 is located below the wing plate 19. A protrusion parallel to the bottom end of the sliding guide rail is provided on the outer side of the sliding block 902. The movement of the friction plate 903 is controlled by the controller. When the friction plate 903 moves upward, it can rub against the wing plate 19, thereby positioning the extension frame 9.

[0030] A power source 10 is provided on one side of the power pulley 2. In this embodiment, the power source 10 is an explosion-proof motor. A head frame 11 is provided at the bottom of the power source 10. This configuration enables the conveyor belt 1 to move.

[0031] The adjusting pulley 5 is rotatably connected to the two ends of the lifting rod 20. The lifting rod 20 is slidably connected to the limiting guide rail 6. The lifting rod 20 can support the adjusting pulley 5 and the telescopic rod 13, and prevent the telescopic rod 13 from bending due to its own weight.

[0032] The upper part of the limiting guide rail 6 is provided with equidistant limiting strips 21. The support rod 7, extension frame 9 and lifting rod 20, which are slidably connected to the limiting guide rail 6, are all provided with grooves that are adapted to the limiting strips 21. This arrangement can restrict the sliding to only along the limiting guide rail 6.

[0033] In this embodiment, when the control system of the coal mine belt conveyor needs to adjust the length of the conveyor belt 1, the friction plate 903 is first separated from the wing plate 19. The length of the telescopic rod 13 is adjusted by dividing the length to be adjusted into the number of telescopic sleeves 8 on one side. The length of the telescopic sleeves 8 is determined, and the adjustment starts from the telescopic sleeve 8 on one side of the power pulley 2 and continues until the last telescopic sleeve is reached. The adjustment of the telescopic rod 13 is synchronized with this adjustment. After the adjustment is completed, the friction plate 903 is brought into contact with the wing plate 19. This allows the length of the conveyor belt 1 to be adjusted while changing the distribution distance of the support rollers 15, thus avoiding the problem of the conveyor belt 1 being partially suspended and prone to tilting after being extended.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A control system for a belt conveyor for coal mines, comprising a conveyor belt (1), characterized in that: The inner ring of the conveying belt (1) is provided with a power pulley (2), the other end of the inner ring of the conveying belt (1) is provided with a reversing pulley (3), and the middle part of the inner ring of the conveying belt (1) is provided with a tension pulley (4) and an adjusting pulley (5); the lower part of the two sides of the conveying belt (1) is provided with a limiting guide rail (6), the upper part of the limiting guide rail (6) is slidably connected with a supporting rod (7), the two supporting rods (7) are connected through a supporting roller (15), the adjacent supporting rods (7) are fixedly connected through a telescopic sleeve (8), and the last two supporting rods (7) are rotatably connected with the reversing pulley (3); the two sides of the reversing pulley (3) are rotatably connected with an extension frame (9), and the extension frame (9) is slidably connected with the limiting guide rail (6); the middle part of the adjusting pulley (5) is rotatably connected with a connecting frame (12), one end, away from the adjusting pulley (5), of the connecting frame (12) is fixedly installed with a telescopic rod (13), the telescopic rod (13) is parallel to the limiting guide rail (6), and the fixed end of the telescopic rod (13) is fixedly connected with the limiting guide rail (6) through connecting rods (14), and the upper part of the two connecting rods (14) is fixedly installed with an extension rod (16) for supporting the tension pulley (4).

2. A control system for a coal mine belt conveyor as claimed in claim 1, characterised in that: The two sides of the supporting rod (7) are provided with clamping grooves (17), and the fixed end and the free end of the telescopic sleeve (8) are fixedly installed with clamping blocks (18), and the clamping blocks (18) are inserted into the inside of the clamping grooves (17).

3. The control system for a belt conveyor for coal mines according to claim 1, characterized in that: The extension frame (9) comprises a frame body (901), and equidistantly arranged sliding clamping blocks (902) are fixedly installed at the bottom end of the frame body (901); the sliding clamping blocks (902) are slidably connected to the outer surface of the limiting guide rail (6).

4. A control system for a coal mine belt conveyor as claimed in claim 3, characterised in that: The outer side of the limiting guide rail (6) is provided with a wing plate (19), and the inside of the sliding clamping block (902) is provided with a slidingly connected friction plate (903), and the friction plate (903) is located below the wing plate (19); the outer side of the sliding clamping block (902) is provided with a protrusion parallel to the bottom end of the sliding guide rail.

5. The control system of a belt conveyor for coal mines according to claim 1 or 4, characterized in that: One side of the power pulley (2) is provided with a power source (10), and the bottom end of the power source (10) is provided with a head frame (11).

6. A control system for a coal mine belt conveyor as claimed in claim 5, characterised in that: The two ends of the adjusting pulley (5) are rotatably connected with lifting rods (20), and the lifting rods (20) are slidably connected with the limiting guide rail (6).

7. A control system for a coal mine belt conveyor as claimed in claim 6, characterised in that: The upper part of the limiting guide rail (6) is provided with equidistantly distributed limiting strips (21), and the supporting rod (7), the extension frame (9) and the lifting rod (20) slidably connected with the limiting guide rail (6) are all provided with grooves matched with the limiting strips (21).

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