Scraper low-cost fault online detection system

Abstract

The utility model relates to the technical field of low-cost fault online detection systems for scrapers, and provides a low-cost fault online detection system for scrapers, which comprises a groove body, a plurality of scrapers, two laser range finders, a detection mechanism, a cleaning mechanism and a conveying mechanism, the plurality of scrapers are arranged in the groove body, the laser range finders are arranged in the groove body, the detection mechanism is arranged in the groove body, and the cleaning mechanism is arranged in the groove body. The two laser range finders are arranged on the tank body, the detection mechanism is arranged on the tank body and used for detecting the running state of the scraper blades, the cleaning mechanism is arranged on the tank body and used for guaranteeing normal use of the laser range finders, and the conveying mechanism is arranged in the tank body and used for driving the multiple scraper blades to move. The problems that in the prior art, the problems are difficult to find in time when personnel inspect and maintain the scraper conveyor, equipment faults such as chain floating, chain breaking, scraper falling, stalling and chain lengthening are prone to occurring, and normal production is greatly affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of scraper conveyor fault detection, in particular to a low-cost online fault detection system for scraper conveyors. Background Technique

[0002] A scraper conveyor is a transportation machine used in coal mining working faces. The scraper conveyor has the advantages that its transportation capacity is not affected by the size and humidity of the cargo, its body height is small and convenient for loading, its body length can be adjusted conveniently, and its body is strong enough to be used in working faces with blasting coal loading.

[0003] After long-term use, the scraper conveyor is easily affected by the surrounding environment and goods, resulting in certain damage, and requires frequent inspections by personnel. If the inspections and maintenance are not in place and the personnel do not discover and continue to use it in time, equipment failures such as chain floating, chain breaking, scraper falling off, stall, and chain elongation are likely to occur, which greatly affects normal production. Summary of the Utility Model

[0004] The utility model provides a low-cost online fault detection system for a scraper conveyor, which solves the problems in the related technologies that it is difficult for personnel to timely discover problems during the inspection and maintenance of the scraper conveyor, and equipment failures such as chain floating, chain breaking, scraper falling off, stall, and chain elongation are likely to occur, which greatly affects normal production.

[0005] The technical solution of the utility model is as follows: A low-cost online fault detection system for a scraper conveyor, comprising: a trough body, scrapers, laser rangefinders, a detection mechanism, a cleaning mechanism, and a conveying mechanism;

[0006] A plurality of the scrapers are provided, and the plurality of scrapers are all arranged in the trough body;

[0007] Two laser rangefinders are provided, and the two laser rangefinders are both arranged on the trough body;

[0008] The detection mechanism is arranged on the trough body and is used for detecting the running state of the scraper;

[0009] The cleaning mechanism is arranged on the trough body and is used to ensure the normal use of the laser rangefinder;

[0010] The conveying mechanism is arranged in the trough body and is used to drive the plurality of scrapers to move.

[0011] Preferably, the detection mechanism includes: a reflector, a fixing frame, a condenser tube, and a moving component;

[0012] A plurality of the reflectors are provided, and two reflectors are fixedly connected to each scraper;

[0013] Two fixing frames are provided, and the two fixing frames are both fixedly connected to the trough body;

[0014] There are two condenser cylinders, and the two condenser cylinders are respectively fixedly connected to two fixed frames. The two laser rangefinders are respectively arranged above the two condenser cylinders;

[0015] There are two moving components, and the two moving components are respectively arranged on the two fixed frames and are used to drive the laser rangefinder to move.

[0016] Further, the moving component includes: a fixed plate and a first electric cylinder;

[0017] The fixed plate is fixedly connected to the fixed frame;

[0018] The first electric cylinder is arranged on the fixed plate, and the output end of the first electric cylinder penetrates through the fixed plate and is fixedly connected to the laser rangefinder.

[0019] Still further, the cleaning mechanism includes: a stabilizing frame, a cleaning disc, a rubber sheet, a driving component and a spraying component;

[0020] There are two stabilizing frames, and the two stabilizing frames are both fixedly connected to the trough body;

[0021] There are two cleaning discs, and the two cleaning discs are respectively rotatably connected to the two stabilizing frames;

[0022] There are two rubber sheets, and the two rubber sheets are respectively fixedly connected to the two cleaning discs;

[0023] The driving component is arranged on the two stabilizing frames and is used to drive the two cleaning discs to rotate;

[0024] The spraying component is arranged on the trough body and is used to spray and clean the reflector.

[0025] As a further solution of the present application, the driving component includes: a driving wheel, a transmission belt, a rotating gear, a power gear and a first motor;

[0026] There are two driving wheels, and the two driving wheels are respectively fixedly connected to the two cleaning discs;

[0027] The transmission belt is connected between the two driving wheels in a transmission manner;

[0028] The rotating gear is fixedly connected to one of the driving wheels;

[0029] The power gear is rotatably arranged on one of the stabilizing frames, and the power gear meshes with the rotating gear;

[0030] The first motor is arranged on one of the stabilizing frames, and the output end of the first motor is fixedly connected to the power gear.

[0031] As a further solution of the present application, the spraying assembly includes: a water tank, a water pump, a spray pipe and atomizing nozzles;

[0032] The water tank is fixedly connected to the tank body;

[0033] The water pump is arranged on the tank body, and the input end of the water pump is communicated with the water tank;

[0034] The spray pipe is arranged on the tank body, and the output end of the water pump is communicated with the spray pipe;

[0035] There are two atomizing nozzles, and both of the two atomizing nozzles are communicated with the spray pipe.

[0036] On the basis of the foregoing solution, the conveying mechanism includes: a rotating rod, a sprocket, a chain and a second motor;

[0037] There are two rotating rods, and both of the two rotating rods are rotatably connected to the inside of the tank body;

[0038] There are multiple sprockets, and two sprockets are fixedly connected to each rotating rod;

[0039] There are two chains, and the two chains are respectively drivingly connected between adjacent sprockets, and multiple scraper plates are arranged between the two chains;

[0040] The second motor is arranged on the tank body, and the output end of the second motor is fixedly connected to one of the rotating rods.

[0041] On the basis of the foregoing solution, further, both of the two condenser tubes are arranged directly above two rows of reflector plates, and through grooves are formed in both of the two condenser tubes.

[0042] As a preferred technical solution of the present application, both of the two rubber sheets are arranged in a cross shape and are in contact with two of the reflector plates.

[0043] As a preferred technical solution of the present application, a support frame is fixedly connected to the tank body, and the spray pipe is fixedly connected to the support frame.

[0044] The working principle and beneficial effects of the present utility model are as follows:

[0045] 1. In the present utility model, through the cooperation among the scraper plate, the laser rangefinder, the detection mechanism and the conveying mechanism, it is convenient to drive the scraper plate to move and detect the running state of the scraper plate.

[0046] 2. In the present utility model, through the arrangement of the cleaning mechanism, it is convenient to clean the surface of the reflector plate, thereby reducing the blockage of the reflector plate by dust.

[0047] 3. In the present utility model, through the cooperation among the trough body, the scraper, the laser rangefinder, the detection mechanism, the cleaning mechanism and the conveying mechanism, it is convenient to automatically and on-line detect the operation state of the scraper conveyor, reduce the failure rate and improve the conveying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0049] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0050] Figure 2 is a schematic structural diagram of another angle of the present utility model;

[0051] Figure 3 is a schematic structural diagram of the detection mechanism, the cleaning mechanism and the conveying mechanism of the present utility model;

[0052] Figure 4 For the present utility model Figure 3 is a schematic diagram of a partial enlarged structure at A in the present utility model.

[0053] In the figure: 1. trough body; 2. scraper; 3. laser rangefinder; 4. reflector; 5. fixing frame; 6. condenser tube; 7. fixing plate; 8. first electric cylinder; 9. stabilizing frame; 10. cleaning disc; 11. rubber sheet; 12. driving wheel; 13. transmission belt; 14. rotating gear; 15. power gear; 16. first motor; 17. water tank; 18. water pump; 19. spray pipe; 20. atomizing nozzle; 21. rotating rod; 22. sprocket; 23. chain; 24. second motor; 25. support frame. SPECIFIC EMBODIMENTS

[0054] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0055] As Figures 1 to 4 shown, this embodiment proposes an on-line fault detection system for a low-cost scraper conveyor, including: a trough body 1, a scraper 2, a laser rangefinder 3, a detection mechanism, a cleaning mechanism and a conveying mechanism. There are multiple scrapers 2, and all the multiple scrapers 2 are arranged in the trough body 1. There are two laser rangefinders 3, and both of the two laser rangefinders 3 are arranged on the trough body 1. Through the cooperation among the trough body 1, the scraper 2, the laser rangefinder 3, the detection mechanism, the cleaning mechanism and the conveying mechanism, it is convenient to automatically and on-line detect the operation state of the scraper 2 machine, reduce the failure rate and improve the conveying efficiency.

[0056] As Figures 1 to 3 shown, a detection mechanism is arranged on the trough body 1 for detecting the running state of the scraper 2. The detection mechanism includes: a reflector 4, a fixing frame 5, a condenser barrel 6 and a moving component. Two condenser barrels 6 are both arranged directly above two rows of reflectors 4. Through grooves are formed in both condenser barrels 6. There are multiple reflectors 4. Two reflectors 4 are fixedly connected to each scraper 2. There are two fixing frames 5. Both fixing frames 5 are fixedly connected to the trough body 1. There are two condenser barrels 6. The two condenser barrels 6 are respectively fixedly connected to the two fixing frames 5. Two laser rangefinders 3 are respectively arranged above the two condenser barrels 6. There are two moving components. The two moving components are respectively arranged on the two fixing frames 5 for driving the laser rangefinders 3 to move. The moving component includes: a fixing plate 7 and a first electric cylinder 8. The fixing plate 7 is fixedly connected to the fixing frame 5. The first electric cylinder 8 is arranged on the fixing plate 7. The output end of the first electric cylinder 8 penetrates through the fixing plate 7 and is fixedly connected to the laser rangefinder 3. Specifically, when the scraper 2 moves, it drives the reflector 4 to pass through the bottom of the condenser barrel 6. The laser rangefinder 3 projects the laser through the condenser barrel 6 onto the reflector 4, thereby detecting the movement state of the scraper 2.

[0057] As Figures 1 to 3As shown in the figure, a cleaning mechanism is arranged on the tank body 1 to ensure the normal use of the laser rangefinder 3. The cleaning mechanism includes: a stabilizing frame 9, a cleaning disc 10, rubber sheets 11, a driving component and a spraying component. The two rubber sheets 11 are both arranged in a cross shape and are in contact with two of the reflector plates 4. There are two stabilizing frames 9, and the two stabilizing frames 9 are both fixedly connected to the tank body 1. There are two cleaning discs 10, and the two cleaning discs 10 are respectively rotatably connected to the two stabilizing frames 9. There are two rubber sheets 11, and the two rubber sheets 11 are respectively fixedly connected to the two cleaning discs 10. The driving component is arranged on the two stabilizing frames 9 and is used to drive the two cleaning discs 10 to rotate. The spraying component is arranged on the tank body 1 and is used to spray and clean the reflector plates 4. The driving component includes: driving wheels 12, a transmission belt 13, a rotating gear 14, a power gear 15 and a first motor 16. There are two driving wheels 12, and the two driving wheels 12 are respectively fixedly connected to the two cleaning discs 10. The transmission belt 13 is connected in a transmission manner between the two driving wheels 12. The rotating gear 14 is fixedly connected to one of the driving wheels 12. The power gear 15 is rotatably arranged on one of the stabilizing frames 9, and the power gear 15 meshes with the rotating gear 14. The first motor 16 is arranged on one of the stabilizing frames 9, and the output end of the first motor 16 is fixedly connected to the power gear 15. The spraying component includes: a water tank 17, a water pump 18, a spraying pipe 19 and atomizing nozzles 20. A support frame 25 is fixedly connected to the tank body 1, and the spraying pipe 19 is fixedly connected to the support frame 25. The water tank 17 is fixedly connected to the tank body 1. The water pump 18 is arranged on the tank body 1, the input end of the water pump 18 is communicated with the water tank 17, the spraying pipe 19 is arranged on the tank body 1, and the output end of the water pump 18 is communicated with the spraying pipe 19. There are two atomizing nozzles 20, and the two atomizing nozzles 20 are both communicated with the spraying pipe 19. Specifically, the water in the water tank 17 is pumped out by the water pump 18, and the water is sprayed onto the reflector plates 4 through the spraying pipe 19 and the atomizing nozzles 20. Then, the first motor 16 arranged on the stabilizing frame 9 drives the power gear 15 and the rotating gear 14 to rotate. When the rotating gear 14 rotates, it drives the driving wheel 12 to rotate. Through the transmission of the transmission belt 13, the two driving wheels 12 and the two cleaning discs 10 are driven to rotate. When the two cleaning discs 10 rotate, the two rubber sheets 11 drive the water and dust on the reflector plates 4 to be wiped off.

[0058] As Figures 1 to 3As shown in the figure, a conveying mechanism is arranged in the trough 1 and is used to drive a plurality of scraping plates 2 to move. The conveying mechanism includes: a rotating rod 21, a sprocket 22, a chain 23, and a second motor 24. There are two rotating rods 21, and both of the two rotating rods 21 are rotatably connected in the trough 1. There are a plurality of sprockets 22, and two sprockets 22 are fixedly connected to each rotating rod 21. There are two chains 23, and the two chains 23 are respectively drivingly connected between two adjacent sprockets 22. A plurality of scraping plates 2 are all arranged between the two chains 23. The second motor 24 is arranged on the trough 1, and the output end of the second motor 24 is fixedly connected to one of the rotating rods 21. Specifically, the second motor 24 drives the rotating rod 21 to rotate. When the rotating rod 21 rotates, it drives the sprocket 22 to rotate, and drives a plurality of scraping plates 2 to move through the transmission of the chain 23.

[0059] In this embodiment, when detecting the operating state of the scraping plate 2, during the operation of the scraping plate 2 machine, the scraping plate 2 sequentially passes through two laser rangefinders 3. The laser rangefinders 3 measure the distance above each scraping plate 2 and the time when two adjacent scraping plates 2 pass by. The PLC receives the signals of the two laser rangefinders 3. At the initial stage of system operation, first, a self-check operation is performed on the well-operating scraping plate 2 machine, and the control system records the basic parameters of the operation of the scraping plate 2 machine, including the maximum, minimum, and average time for the scraping plate 2 to pass through the two laser rangefinders 3, the maximum time difference for the two ends of the scraping plate 2 to pass through the two laser rangefinders 3, and the maximum distance and average distance information of the scraping plate 2 relative to the laser rangefinders 3.

[0060] In order to distinguish between the two laser rangefinders 3, we divide the two laser rangefinders 3 into a first laser rangefinder 3 and a second laser rangefinder 3, and divide the two chains 23 opposite to the two laser rangefinders 3 into a first chain 23 and a second chain 23. When a fault occurs in the scraping plate 2 machine, the discrimination is as follows:

[0061] When the scraping plate 2 machine has a chain floating fault, the chain 23 of the scraping plate 2 comes off the sprocket 22. The chain 23 and the scraping plate 2 move downward and tilt forward and backward compared with the normal state position (the normal state position is the relevant self-check parameters). Compared with the normal state, the distance between the scraping plate 2 and the first laser rangefinder 3 increases significantly, and there is a long time difference in the distance signals of the two laser rangefinders 3 measuring the scraping plate 2. It can be judged that a chain floating fault occurs at the first place.

[0062] When the scraping plate 2 machine has a chain break fault, initially one of the chains breaks. If it is not discovered in time, it may cause the motor to be overloaded and powered off due to the chain 23 winding or the other chain 23 being pulled off. Compared with normal operation, the distance measured by the first laser rangefinder 3 above the scraping plate 2 increases significantly, and the second laser rangefinder 3 exceeds the detection distance for a long time. From this, it can be judged that the second chain 23 is broken.

[0063] If one side or all of the scraper 2 falls off, when the fallen scraper 2 passes by the laser rangefinder 3, there is no normal distance signal. The system detects that no signal of the scraper 2 is detected within 1.5 times the time period when the scraper 2 passes by. When other scrapers 2 pass by, the signal is normal, and it can be judged that the fault of the scraper 2 falling off has occurred.

[0064] When the scraper 2 machine is running normally, the time for the scraper 2 to pass by the laser rangefinder 3 is almost the same. The system measures the time for a group of scrapers 2 (such as 10) to pass by the laser rangefinder 3. If it exceeds the allowable range, it can be judged that a stall fault has occurred.

[0065] When the scraper 2 machine is in a normal state, the average distance from each scraper 2 to the laser rangefinder 3 is calculated. After long-term use, the chain 23 of the scraper 2 is elongated, and the average distance from each scraper 2 to the laser rangefinder increases. It can be judged that the chain 23 of the scraper 2 is elongated. The fault alarm of the scraper 2 machine is divided into a first-level alarm and a second-level alarm. The floating chain, elongation, and falling off of the scraper 2 of the scraper 2 machine are second-level alarms to remind personnel to check; when the scraper 2 machine has a broken chain or serious stall, a first-level alarm is issued and the system stops the relevant equipment.

[0066] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Low-cost online fault detection system for scraper conveyor, characterized by: include: Tank body (1); A scraper (2), wherein a plurality of the scrapers (2) are provided, and the plurality of scrapers (2) are all arranged in the tank body (1); A laser rangefinder (3), wherein two laser rangefinders (3) are provided, and both laser rangefinders (3) are arranged on the tank body (1); A detection mechanism, the detection mechanism being arranged on the tank body (1) and being used to detect the operating state of the scraper (2); a cleaning mechanism, the cleaning mechanism being arranged on the tank body (1) and being used to ensure normal use of the laser rangefinder (3); A conveying mechanism, wherein the conveying mechanism is arranged in the trough body (1) and is used to drive the plurality of scrapers (2) to move.

2. The low-cost online fault detection system for a scraper according to claim 1 is characterized in that: The detection mechanism includes: A reflector (4), wherein a plurality of reflectors (4) are provided, and each scraper (2) is fixedly connected to two of the reflectors (4); A fixing frame (5), wherein two fixing frames (5) are provided, and both fixing frames (5) are fixedly connected to the tank body (1); A light collecting tube (6), wherein two light collecting tubes (6) are provided, the two light collecting tubes (6) are respectively fixedly connected to the two fixing frames (5), and the two laser rangefinders (3) are respectively arranged above the two light collecting tubes (6); A moving assembly, wherein two moving assemblies are provided, and the two moving assemblies are respectively arranged on the two fixing frames (5) and are used to drive the laser rangefinder (3) to move.

3. The low-cost online fault detection system for a scraper according to claim 2 is characterized in that: The mobile assembly comprises: A fixing plate (7), the fixing plate (7) being fixedly connected to the fixing frame (5); A first electric cylinder (8), wherein the first electric cylinder (8) is arranged on the fixing plate (7), and an output end of the first electric cylinder (8) passes through the fixing plate (7) and is fixedly connected to the laser rangefinder (3).

4. The low-cost online fault detection system for a scraper according to claim 3 is characterized in that: The cleaning mechanism comprises: A stabilizing frame (9), wherein two stabilizing frames (9) are provided, and both stabilizing frames (9) are fixedly connected to the tank body (1); A cleaning disk (10), wherein two cleaning disks (10) are provided, and the two cleaning disks (10) are rotatably connected to the two stabilizing frames (9) respectively; A rubber sheet (11), wherein two rubber sheets (11) are provided, and the two rubber sheets (11) are respectively fixedly connected to the two cleaning discs (10); a driving assembly, the driving assembly being arranged on the two stabilizing frames (9) and being used for driving the two cleaning discs (10) to rotate; A spray assembly, the spray assembly being arranged on the tank body (1) and being used for spraying and cleaning the reflective plate (4).

5. The low-cost online fault detection system for a scraper according to claim 4 is characterized in that: The drive assembly comprises: A driving wheel (12), wherein two driving wheels (12) are provided, and the two driving wheels (12) are respectively fixedly connected to the two cleaning discs (10); A transmission belt (13), the transmission belt (13) being transmission-connected between the two driving wheels (12); a rotating gear (14), the rotating gear (14) being fixedly connected to one of the driving wheels (12); a power gear (15), the power gear (15) being rotatably mounted on one of the stabilizing frames (9), the power gear (15) being meshed with the rotating gear (14); A first motor (16), wherein the first motor (16) is arranged on one of the stabilizing frames (9), and an output end of the first motor (16) is fixedly connected to the power gear (15).

6. The low-cost online fault detection system for a scraper according to claim 5 is characterized in that: The spray assembly comprises: A water tank (17), the water tank (17) being fixedly connected to the tank body (1); A water pump (18), the water pump (18) being arranged on the tank body (1), and an input end of the water pump (18) being in communication with the water tank (17); A spray pipe (19), wherein the spray pipe (19) is arranged on the tank body (1), and the output end of the water pump (18) is connected to the spray pipe (19); Atomizing nozzle (20), wherein two atomizing nozzles (20) are provided, and both atomizing nozzles (20) are connected to the spray pipe (19).

7. The low-cost online fault detection system for a scraper according to claim 6 is characterized in that: The conveying mechanism comprises: A rotating rod (21), wherein two rotating rods (21) are provided, and both rotating rods (21) are rotatably connected in the slot body (1); A sprocket (22), wherein a plurality of sprockets (22) are provided, and each of the rotating rods (21) is fixedly connected to two of the sprockets (22); A chain (23), wherein two chains (23) are provided, and the two chains (23) are respectively transmission-connected between two adjacent sprocket wheels (22), and the plurality of scrapers (2) are arranged between the two chains (23); A second motor (24), the second motor (24) being arranged on the tank body (1), and an output end of the second motor (24) being fixedly connected to one of the rotating rods (21).

8. The low-cost online fault detection system for a scraper according to claim 7 is characterized in that: The two light-collecting cylinders (6) are both arranged directly above the two rows of reflective plates (4), and the two light-collecting cylinders (6) are both provided with a passing slot.

9. The low-cost online fault detection system for a scraper according to claim 8 is characterized in that: The two rubber sheets (11) are both arranged in a cross shape and are in contact with two of the reflective plates (4).

10. The low-cost online fault detection system for a scraper according to claim 9, characterized in that: A support frame (25) is fixedly connected to the tank body (1), and the spray pipe (19) is fixedly connected to the support frame (25).

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