Belt conveyor belt tear early warning device

Abstract

The application discloses a belt conveyor belt tearing early warning device, which comprises a rack, a plurality of arranged supporting roller frame groups, each of which is fixed on the rack, a pressure-adjusting driving roller installed on one end of the rack, an outer frame body slidingly arranged on the rack, a driving motor installed on the outer frame body, an output end of the driving motor connected with the pressure-adjusting driving roller through a transmission belt, a conveying belt wound on the supporting roller frame groups and the pressure-adjusting driving roller, a weighing early warning assembly arranged on the rack and located at the lower end surface of the working conveying belt of the conveying belt, used for detecting and early warning the falling material of the conveying belt, and a belt turning detection assembly arranged on the rack, used for turning the track of the working conveying belt detected by the weighing early warning assembly, so that the working conveying belt locally forms a return conveying belt, and secondary detection is carried out.

Description

Technical Field

[0001] This invention belongs to the technical field of coal conveyor belt tear detection equipment, specifically a belt conveyor belt tear early warning device. Background Technology

[0002] Coal conveyor belts are commonly used in thermal power plants for coal transportation. Currently, during the transportation of coal, lumpy materials often crack or break the surface of the conveyor belt, causing the belt conveyor to malfunction, resulting in production stoppages and significant economic losses. Existing belt tear detection devices are unable to detect tears in a timely manner during transportation, leading to unintentional belt tears and substantial cost losses. At the same time, some simple material dropping weighing and early warning devices are affected by water and snow accumulation during rain and snow, resulting in low detection accuracy. Subsequent shutdown inspections are also overly conservative, seriously affecting transportation efficiency.

[0003] Therefore, those skilled in the art have provided a belt conveyor belt tear warning device to solve the problems mentioned in the background art. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a belt tear warning device for a belt conveyor, comprising:

[0005] frame;

[0006] There are multiple idler frame assemblies arranged in a row, and each idler frame assembly is fixed on the machine frame;

[0007] A pressure regulating drive roller is installed on one side of the frame. An outer frame is slidably mounted on the frame, and a drive motor is mounted on the outer frame. The output end of the drive motor is connected to the pressure regulating drive roller via a transmission belt.

[0008] The conveyor belt is wound around the aforementioned idler frame assembly and the pressure regulating drive roller;

[0009] A weighing warning assembly is arranged on the frame and located at the lower end of the working conveyor belt in the conveyor belt, used for detecting and warning of material falling off the conveyor belt; and

[0010] The conveyor belt detection component is arranged on the frame and is used to redirect the trajectory of the working conveyor belt being detected by the weighing warning component, so that a local return conveyor belt is formed on the working conveyor belt for secondary detection.

[0011] Furthermore, preferably, the pressure regulating drive roller includes:

[0012] The main roller is rotatably mounted on the outer frame.

[0013] An inner frame base is horizontally fixed on the machine frame, and an adjustment seat is slidably provided on the inner frame base;

[0014] An internal spring is connected between the adjusting seat and the outer frame.

[0015] A telescopic guide rod is horizontally fixed on the inner frame base, and one end of the telescopic guide rod is connected to the adjustment base;

[0016] The pressure-sensitive elements are evenly distributed on one side of the outer frame. The adjustment seat is provided with a plurality of contact rods, one end of which abuts against the pressure-sensitive elements.

[0017] Furthermore, as a preferred embodiment, the weighing warning component includes:

[0018] An outer shaft disk is fixed to one side of the frame, and a shaft is rotatably mounted inside the outer shaft disk;

[0019] A support plate is horizontally fixed to the shaft, and the cross-section of the support plate has an L-shaped structure.

[0020] A weighing pallet device is fixed to the upper surface of the support plate; and

[0021] A side-mounted motor is fixed outside the outer shaft disk, and the output end of the side-mounted motor is connected to the shaft through the meshing action of bevel gears.

[0022] Furthermore, as a preferred embodiment, the return conveyor belt located below the working conveyor belt in the conveyor belt is symmetrically equipped with through-beam grating detectors, which are horizontally suspended and fixed on the frame.

[0023] Furthermore, preferably, the transfer detection component includes:

[0024] The positioning seats are two symmetrically arranged on the left and right, and both positioning seats are fixed on the frame;

[0025] The support body is rotatably mounted on each of the positioning seats, and a reduction gearbox is provided on each positioning seat. The output end of the reduction gearbox is fixed to the support body.

[0026] Guide rails are arranged parallel and symmetrically on one side end face of each of the brackets, and two shaft discs are slidably arranged on the guide rails.

[0027] Vibrating guide rollers are rotatably mounted between the shaft discs.

[0028] Furthermore, as a preferred embodiment, the vibrating guide roller can be adjusted by the rotation of the support body so that the conveyor belt is set in a Z-shape, and a return conveyor belt is set between the two vibrating guide rollers. High-speed detection gratings are also symmetrically arranged on both sides of the return conveyor belt.

[0029] Furthermore, preferably, the vibrating guide roller includes:

[0030] Guide roller body;

[0031] An inner shaft is coaxially arranged within the guide roller body, allowing relative rotation.

[0032] An eccentric sleeve is fitted and fixed to the outside of the inner shaft, and a pressure plate is fixed to one end of the inner shaft.

[0033] The positioning shaft is slidably embedded in the guide roller body; and

[0034] Support springs are circumferentially distributed between the positioning shaft and the guide roller body.

[0035] Furthermore, as a preferred embodiment, the contact surface between the pressure plate and the positioning shaft is configured as a file-like structure.

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] The main weighing and early warning component in this invention can prioritize weighing and detecting the material falling off the conveyor belt, thereby achieving preliminary monitoring and early warning of the working conveyor belt. In particular, the specially designed belt transfer detection component can promptly adjust the working conveyor belt in the corresponding area after the weighing and early warning component issues an early warning, forming a return conveyor belt. The high-speed detection grating is used for precision detection, improving the accuracy of early warning detection. Meanwhile, the through-beam grating detector can monitor the return conveyor belt in the conveyor belt in real time, thereby achieving a comprehensive monitoring and early warning effect. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of the present invention;

[0039] Figure 2 This is a schematic diagram of the pressure regulating drive roller in this invention;

[0040] Figure 3 This is a schematic diagram of the weighing early warning component in this invention;

[0041] Figure 4 This is a schematic diagram of the transfer belt detection component in this invention;

[0042] Figure 5 This is a schematic diagram of the conveyor belt switching structure in this invention;

[0043] Figure 6 This is a schematic diagram of the structure of the through-beam grating detector in this invention;

[0044] Figure 7 This is a schematic diagram of the structure of the vibrating guide roller in this invention;

[0045] Figure 8 This is a schematic diagram of the conveyor belt switching process in this invention;

[0046] In the diagram: 1. Frame; 11. Conveyor belt; 12. Outer frame; 13. Drive motor; 14. Idler roller assembly; 2. Pressure regulating drive roller; 21. Main roller body; 22. Inner frame seat; 23. Adjusting seat; 24. Telescopic guide rod; 25. Contact pressure component; 26. Contact rod; 3. Weighing early warning assembly; 31. Outer shaft disc; 32. Frame support plate; 33. Weighing pallet device; 34. Through-beam grating detector; 4. Transfer belt detection assembly; 41. Positioning seat; 42. Support body; 43. Reduction gearbox; 44. Guide rail; 45. Shaft disc; 46. High-speed detection grating; 5. Vibrating guide roller; 51. Guide roller body; 52. Inner shaft; 53. Eccentric column sleeve; 54. Pressure plate; 55. Positioning shaft component; 56. Support spring. Detailed Implementation

[0047] Please see Figure 1 In this embodiment of the invention, a belt conveyor belt tear warning device includes:

[0048] Rack 1;

[0049] There are multiple idler frame groups 14 arranged in a row, and each idler frame group 14 is fixed on the frame 1;

[0050] A pressure regulating drive roller 2 is installed on one side of the frame 1. An outer frame 12 is slidably mounted on the frame 1. A drive motor 13 is mounted on the outer frame 12. The output end of the drive motor 13 is connected to the pressure regulating drive roller 2 for transmission via a transmission belt.

[0051] The conveyor belt 11 is wound around the aforementioned idler frame 14 and the pressure regulating drive roller 2;

[0052] The weighing warning component 3 is arranged on the frame 1 and located at the lower end face of the working conveyor belt 11, for detecting and warning of material falling off the conveyor belt 11; and

[0053] The belt shift detection component 4 is arranged on the frame 1 and is used to redirect the trajectory of the working conveyor belt being detected by the weighing warning component 3, so that a local return conveyor belt is formed for secondary detection. The conveyor belt is divided into a working conveyor belt (relatively above, carrying coal and ore), a return conveyor belt (relatively below, without load), and a return conveyor belt. The belt shift detection component is particularly designed for working conveyor belts loaded with coal and ore. Since coal and ore will accumulate on the surface of the conveyor belt, when the weighing warning component issues a warning, the belt shift detection component will adjust the main body of the conveyor belt in time. After the return conveyor belt is formed, the coal and ore can be removed from the return conveyor belt area. At this time, a secondary detection is performed on this area to improve detection accuracy and avoid false alarms and shutdowns that affect conveying efficiency.

[0054] In this embodiment, the pressure regulating drive roller 2 includes:

[0055] The main roller body 21 is rotatably mounted on the outer frame body 12;

[0056] An inner frame base 22 is horizontally fixed on the frame 1, and an adjusting seat 23 is slidably provided on the inner frame base 22;

[0057] An internal spring is connected between the adjusting seat 23 and the outer frame 12;

[0058] The telescopic guide rod 24 is horizontally fixed on the inner frame seat 22, and one end of the telescopic guide rod 24 is connected to the adjusting seat 23;

[0059] The pressure-contacting elements 25 are evenly distributed on one side end face of the outer frame 12. The adjusting seat 23 is provided with a plurality of contact rods 26. One end of the contact rod 26 abuts against the pressure-contacting elements 25. On the one hand, the adjusting seat can adjust the installation positioning point of the main roller body by sliding along the inner frame seat, thereby adjusting the tension of the conveyor belt. On the other hand, the tension pressure of the main roller body is monitored in real time through the pressure-contacting elements. At the same time, it can cooperate with the belt rotation detection component to realize the trajectory change of the conveyor belt.

[0060] In a preferred embodiment, the weighing warning component 3 includes:

[0061] An outer shaft disk 31 is fixed to one side of the frame 1, and a shaft is rotatably arranged inside the outer shaft disk 31;

[0062] The support plate 32 is horizontally fixed on the shaft, and the cross-section of the support plate 32 is L-shaped.

[0063] The weighing pallet device 33 is fixed to the upper end face of the support plate 32; the material on the conveyor belt can leak through the slit onto the weighing pallet device's platform for real-time weighing and detection.

[0064] A side-mounted motor is fixed outside the outer shaft disk 31. The output end of the side-mounted motor is connected to the shaft through the meshing action of bevel gears. Based on the characteristics of the weighing pallet device and the actual working conditions on site, the pallet weighing structure detects that the weighing reaches the alarm upper limit value and issues an alarm signal to promptly detect the phenomenon of coal spillage from the conveyor belt, and then determines whether the conveyor belt is torn. When rain or snow accumulates, the side-mounted motor can drive the weighing pallet device to rotate, realizing the periodic automatic flipping function and avoiding false alarms.

[0065] In this embodiment, the return conveyor belt 11, located below the working conveyor belt, is symmetrically equipped with through-beam grating detectors 34. These detectors are horizontally mounted on the frame 1. Utilizing the characteristics of through-beam grating detection instruments and their ability to output an alarm upon a change in the through-beam signal, these detectors are installed at the return conveyor belt. When the return conveyor belt is torn, and the tear reaches a certain length and width, a suitable grating is selected. Through repeated experiments, optimization is achieved so that the detector immediately detects a tear and issues an alarm signal when it detects even a single beam of light passing through the tear. Alternatively, a mechanical switch-type cable-stop detection function can be used. When a foreign object punctures the belt and triggers the cable-stop device, or when the belt is scratched and falls, the cable-stop device activates a switch, immediately triggering an alarm.

[0066] In this embodiment, the transfer detection component 4 includes:

[0067] The positioning seats 41 are two symmetrically arranged on the left and right, and both positioning seats 41 are fixed on the frame 1;

[0068] The support body 42 is rotatably mounted on each of the positioning seats 41. The positioning seat 41 is provided with a reduction gearbox 43, and the output end of the reduction gearbox 43 is fixed to the support body 42.

[0069] Guide rails 44 are arranged symmetrically on one side end face of each of the bracket bodies 42, and two shaft discs 45 are slidably arranged on the guide rails 44.

[0070] The vibrating guide rollers 5 are rotatably arranged between the shaft discs 45.

[0071] In this embodiment, the vibrating guide roller 5 can be adjusted by the support body 42 to make the conveyor belt 11 be set in a Z-shape. Between the two vibrating guide rollers 5 is a return conveyor belt. High-speed detection gratings 46 are symmetrically arranged on both sides of the return conveyor belt. When a weighing warning component at one location issues a warning, the nearest belt detection component can adjust the transmission of the working conveyor belt through the vibrating guide roller (see reference). Figure 8(Steps) The working conveyor belt in the conveyor belt can form a staged material drop, and the high-speed detection grating can simultaneously scan and detect the working conveyor belt. Compared with the stop detection, it can effectively ensure the detection accuracy and reduce cost loss.

[0072] In a preferred embodiment, the vibrating guide roller 5 includes:

[0073] Guide roller body 51;

[0074] The inner shaft 52 is coaxially arranged within the guide roller body 51 and can rotate relative to it.

[0075] An eccentric sleeve 53 is sleeved and fixed outside the inner shaft 52, and a pressure plate 54 is fixed to one end of the inner shaft 52.

[0076] Positioning shaft 55 is slidably embedded in the guide roller body 51; and

[0077] Support springs 56 are circumferentially distributed between the positioning shaft 55 and the guide roller body 51.

[0078] In this embodiment, the contact surface between the pressure plate 54 and the positioning shaft 55 is set as a file-shaped structure. That is, under the continuous rotation of the inner shaft, it can be achieved through the eccentric sleeve. At the same time, the pressure plate and the positioning shaft further realize the axial vibration of the guide roller body, thereby vibrating the conveyor belt to avoid residue remaining on the cracks and affecting the detection effect. In particular, each vibrating guide roller located at the front position can shake and side-discharge the coal and ore material on the conveyor belt, which facilitates the priority reduction of transmission pressure and avoids greater impact damage to the conveyor belt when the material is dropped in the later stage.

[0079] Specifically, in the use of coal conveyor belts, by setting up a weighing alarm system, using grating scanning range detection (and optimizing the design of cable-stayed detection devices), it is possible to quickly detect tiny tears in the belt, especially tears with a diameter of more than 1 cm, thereby reducing the occurrence of belt tears, saving costs, and reducing the number of manual inspections during operation, thus reducing labor costs.

[0080] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A belt tear warning device for a belt conveyor, characterized in that: It includes: Rack (1); There are multiple idler frame groups (14) arranged in a row, and each idler frame group (14) is fixed on the frame (1); A pressure regulating drive roller (2) is installed on one side of the frame (1). An outer frame (12) is slidably mounted on the frame (1). A drive motor (13) is mounted on the outer frame (12). The output end of the drive motor (13) is connected to the pressure regulating drive roller (2) via a transmission belt. The conveyor belt (11) is wound around the aforementioned idler frame assembly (14) and the pressure regulating drive roller (2); The weighing warning component (3) is arranged on the frame (1) and located on the lower end face of the working conveyor belt in the conveyor belt (11) for detecting and warning of material falling off the conveyor belt (11); The conveyor belt detection component (4) is arranged on the frame (1) and is used to turn the track of the working conveyor belt detected by the weighing warning component (3) so that the working conveyor belt forms a local return conveyor belt for secondary detection. The transfer detection component (4) includes: The positioning seats (41) are two symmetrically arranged on the left and right, and both positioning seats (41) are fixed on the frame (1); The support body (42) is rotatably mounted on each of the positioning seats (41), and the positioning seat (41) is provided with a reduction gearbox (43), the output end of the reduction gearbox (43) being fixed to the support body (42); Guide rails (44) are arranged symmetrically on one side of each of the bracket bodies (42), and two shaft discs (45) are slidably arranged on the guide rails (44); Vibrating guide rollers (5) are rotatably arranged between shaft discs (45); The vibrating guide roller (5) can be adjusted by the support body (42) so that the conveyor belt (11) is set up in a Z-shape. Between the two vibrating guide rollers (5) is a return conveyor belt. High-speed detection gratings (46) are also symmetrically arranged on both sides of the return conveyor belt. The vibrating guide roller (5) includes: Guide roller body (51); The inner shaft (52) is coaxially arranged within the guide roller body (51) and can rotate relative to it. An eccentric sleeve (53) is sleeved and fixed outside the inner shaft (52), and a pressure plate (54) is fixed at one end of the inner shaft (52); The positioning shaft (55) is slidably embedded in the guide roller body (51); Support springs (56) are circumferentially distributed between the positioning shaft (55) and the guide roller body (51).

2. The belt tear warning device for a belt conveyor according to claim 1, characterized in that: The pressure regulating drive roller (2) includes: The main roller body (21) is rotatably mounted on the outer frame body (12); The inner frame base (22) is horizontally fixed on the frame (1), and an adjustment seat (23) is slidably provided on the inner frame base (22); An internal spring is connected between the adjusting seat (23) and the outer frame (12); The telescopic guide rod (24) is horizontally fixed on the inner frame seat (22), and one end of the telescopic guide rod (24) is connected to the adjusting seat (23); The pressure-sensitive element (25) is evenly distributed on one side end face of the outer frame (12). The adjustment seat (23) is provided with a plurality of contact rods (26), and one end of the contact rod (26) abuts against the pressure-sensitive element (25).

3. The belt tear warning device for a belt conveyor according to claim 1, characterized in that: The weighing early warning component (3) includes: An outer shaft disk (31) is fixed to one side of the frame (1), and a shaft is rotatably arranged inside the outer shaft disk (31); The support plate (32) is horizontally fixed on the shaft, and the cross-section of the support plate (32) is L-shaped. The weighing pallet device (33) is fixed to the upper end face of the support plate (32); A side-mounted motor is fixed outside the outer shaft disk (31), and the output end of the side-mounted motor is connected to the shaft through the meshing action of bevel gears.

4. The belt tear warning device for a belt conveyor according to claim 1, characterized in that: The return conveyor belt (11) located below the working conveyor belt is symmetrically equipped with through-beam grating detectors (34), which are horizontally suspended and fixed on the frame (1).

5. The belt tear warning device for a belt conveyor according to claim 1, characterized in that: The contact surface between the pressure plate (54) and the positioning shaft (55) is configured as a file-shaped structure.

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