Scraper chain breakage detection device

Abstract

The utility model relates to a chain breakage detection device for a scraper, and belongs to the technical field of transportation machinery. The detection device comprises a first detection mechanism and a second detection mechanism, the first detection mechanism comprises a main rotating shaft and an auxiliary rotating shaft, a transmission mechanism is arranged between the main rotating shaft and the auxiliary rotating shaft, a rotating disc is arranged on the auxiliary rotating shaft, a reflector plate is arranged on the side face of the rotating disc, and a laser generator is arranged on the bottom frame in a penetrating mode. The laser generator is matched with the reflector plate, a detector is arranged on the outer side of the bottom frame, and the laser generator is electrically connected with the detector. The second detection mechanism comprises a main detection shaft and an auxiliary detection shaft, a baffle is arranged on the main detection shaft, a pressure sensing unit is arranged at the other end of the auxiliary detection shaft, a touch plate is arranged at the other end of the auxiliary detection shaft, and the touch plate is matched with the pressure sensing unit. Whether the chain is broken or not is judged by detecting whether the scraper machine operates normally or not, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to a scraper chain breakage detection device, belonging to the technical field of transportation machinery. Background Art

[0002] Scraper is a common transport machine. Scraper conveyors use motors, active sprockets, driven sprockets and chains to drive conveyor belts to transport materials. If the chain breaks or detaches, the scraper will stop conveying and cannot carry out normal transportation. Usually, the operation status of the scraper is manually checked to ensure the smooth transportation of materials. However, when the scraper chain breaks during operation, the scraper chain will be displaced and the material will be scattered, which may easily cause impact on the internal structure of the equipment and cause structural damage to the scraper. In addition, the response speed of manual inspection cannot be guaranteed, so the efficiency of chain break handling is low, which increases the safety hazard of chain break accidents, reduces the practicality of the device, and poses a greater safety threat to the steady progress of the scraper's transportation operation. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a scraper chain break detection device for the above-mentioned prior art, which can detect whether the scraper is operating normally, thereby judging whether the chain is broken and reducing safety hazards.

[0004] The technical solution adopted by the utility model to solve the above-mentioned problem is: a scraper chain break detection device, the scraper includes a base frame, a horizontally arranged driving shaft and a driven shaft are inserted in the base frame, two driving wheels are respectively arranged on the driving shaft, two driven wheels are respectively arranged on the driven shaft, chains are respectively sleeved on the driving wheel and the driven wheel on the same side, a number of scrapers evenly spaced are arranged between the two chains, the driving shaft is driven to rotate, and the chain, the driven shaft and the scraper are driven to rotate, the detection device includes a first detection mechanism and a second detection mechanism, the first detection mechanism and the second detection mechanism detect whether the scraper is operating normally, so as to judge whether the chain is broken;

[0005] The first detection mechanism comprises a main rotating shaft and a secondary rotating shaft arranged horizontally, the main rotating shaft is coaxially arranged with the driven shaft and the two are fixedly connected, a transmission mechanism is arranged between the main rotating shaft and the secondary rotating shaft, a rotating disk is arranged on the secondary rotating shaft, a reflective sheet is arranged on the side of the rotating disk, a horizontally arranged laser generator is passed through the base frame, the laser generator cooperates with the reflective sheet, a detector is arranged on the outer side of the base frame, and the laser generator is electrically connected to the detector;

[0006] The second detection mechanism comprises a main detection shaft and a secondary detection shaft arranged coaxially, a baffle is arranged on the main detection shaft, the baffle is arranged above the scraper, the secondary detection shaft is horizontally passed through a bottom frame, a pressure sensing unit is arranged at the other end of the secondary detection shaft, a touch plate is arranged at the other end of the secondary detection shaft, and the touch plate cooperates with the pressure sensing unit;

[0007] A data processor is arranged on the outer side of the chassis, an audible and visual alarm is arranged on the data processor, and the data processor is electrically connected with the audible and visual alarm, the detector and the pressure sensing unit.

[0008] The pressure sensing unit includes a pressure sensing mounting box, which is fixed to the side of the base frame. A horizontally arranged mounting column is arranged in the pressure sensing mounting box, and a sliding column and a pressure sensor are arranged in the mounting column. A horizontally arranged spring is arranged between the sliding column and the pressure sensor. When the touch plate rotates, it contacts the sliding column, pushes the sliding column to slide and then compresses the spring, so that the pressure sensor detects the pressure.

[0009] A torsion spring is also provided. A torsion spring groove is provided on the base frame. The torsion spring is arranged in the torsion spring groove. One end of the torsion spring is fixed to the inner wall of the torsion spring groove, and the other end of the torsion spring is fixedly connected to the outer periphery of the auxiliary detection shaft.

[0010] The transmission mechanism comprises a main gear and a sub gear, wherein the main gear is arranged on a main rotating shaft, and the sub gear is arranged on a sub rotating shaft, and the main gear and the sub gear are meshed with each other.

[0011] Compared with the prior art, the advantages of the utility model are: a scraper chain break detection device, the first detection mechanism and the second detection mechanism detect whether the scraper is operating normally, so as to determine whether the chain is broken, and the data processor activates the sound and light alarm by analyzing the data to alert the staff, so as to facilitate timely handling of the broken chain and reduce safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of a scraper chain break detection device according to an embodiment of the utility model;

[0013] Figure 2 This is a cross-sectional view of a scraper chain break detection device according to an embodiment of the utility model;

[0014] Figure 3 for Figure 2 A magnified view of middle;

[0015] In the figure, 1 is a base frame, 2 is a driven shaft, 3 is a driven wheel, 4 is a chain, 5 is a torsion spring groove, 6 is a main detection shaft, 7 is a secondary detection shaft, 8 is a baffle, 9 is a torsion spring, 10 is a touch plate, 11 is a mounting column, 12 is a slide groove, 13 is a pressure sensing mounting box, 14 is a sliding column, 15 is a spring, 16 is a pressure sensor, 17 is a secondary rotating groove, 18 is a main rotating shaft, 19 is a main gear, 20 is a secondary rotating shaft, 21 is a secondary gear, 22 is a rotating disk groove, 23 is a rotating disk, 24 is a reflective sheet, 25 is a laser generator, 26 is a detector, 27 is a data processor, 28 is an audible and visual alarm, and 29 is a scraper. DETAILED DESCRIPTION

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] like Figure 1 As shown, a scraper chain break detection device in this embodiment, the scraper includes a base frame 1, a U-shaped groove is provided at the center of the top surface of the base frame 1, and a horizontally arranged driving shaft and a driven shaft 2 are passed through the base frame. Two driving wheels are respectively provided on the driving shaft, and two driven wheels 3 are respectively provided on the driven shaft 2. The two driving wheels and the two driven wheels 3 are respectively provided in the U-shaped groove. Chains 4 are respectively sleeved on the driving wheel and the driven wheel 3 on the same side, and a number of scrapers 29 are arranged evenly spaced between the two chains 4, and the two ends of the scrapers 29 are respectively fixed on the two chains 4. The motor drives the driving shaft to rotate, driving the chain 4, the driven shaft 2, and the scraper 29 to rotate in the U-shaped groove. The scraper is provided with a first detection mechanism and a second detection mechanism, and the data of the first detection mechanism and the second detection mechanism are analyzed to determine whether the scraper is running, thereby determining whether the chain is broken.

[0018] like Figure 2 , 3 As shown, the first detection mechanism includes a main rotating shaft 18 and a secondary rotating shaft 20 arranged horizontally. The main rotating shaft 18 and the driven shaft 20 are arranged coaxially and fixedly connected. The base frame 1 is provided with a secondary rotating groove 17, and the two ends of the secondary rotating shaft 20 are mounted in the secondary rotating groove 17. A transmission mechanism is arranged between the main rotating shaft 18 and the secondary rotating shaft 20. A rotating disc groove 22 is arranged in the base frame 1, and a rotating disc 23 is arranged in the rotating disc groove 22. The rotating disc 23 is arranged on the secondary rotating shaft 20, and a reflective sheet 24 is arranged on the side of the rotating disc 23. A horizontally arranged laser generator 25 is penetrated on the base frame 1, and the laser generator 25 cooperates with the reflective sheet 24. A detector 26 is arranged on the outer side of the base frame 1, and the laser generator 25 is electrically connected to the detector 26. The driven shaft 20 rotates, driving the main rotating shaft 18, the transmission mechanism, and the secondary rotating shaft 20 to rotate, so that the rotating disc 23 and the reflective sheet 24 rotate synchronously, the reflective sheet 24 reflects the laser of the laser generator 25 at a regular time, and the detector 26 collects data.

[0019] The transmission mechanism comprises a main gear 19 and a sub gear 21 . The main gear 19 is fixed on the main rotating shaft 18 , and the sub gear 21 is fixed on the sub rotating shaft 20 . The main gear 19 and the sub gear 21 are meshed with each other.

[0020] The second detection mechanism includes a main detection shaft 6 and a secondary detection shaft 7. The main detection shaft 6 and the secondary detection shaft 7 are arranged horizontally and coaxially. The main detection shaft 6 is arranged in a U-shaped groove, and the secondary detection shaft 7 is horizontally passed through the base frame 1. One end of the main detection shaft 6 is fixedly connected with one end of the secondary detection shaft 7. A baffle plate 8 is arranged on the main detection shaft 6, and the baffle plate 8 is arranged above the scraper 29. A torsion spring groove 5 is provided on the base frame 1, and a torsion spring 9 is arranged in the torsion spring groove 5. One end of the torsion spring 9 is fixed to the inner wall of the torsion spring groove 5, and the other end of the torsion spring 5 is fixedly connected to the outer periphery of the secondary detection shaft 7. A pressure sensing unit is provided at the other end of the secondary detection shaft 7, and a touch plate 10 is provided on the other end of the secondary detection shaft 7, and the touch plate 10 cooperates with the pressure sensing unit. When the chain 4 rotates, the scraper 29 is driven to rotate synchronously, and the scraper 29 drives the baffle 8 to rotate periodically. The main detection shaft 6 and the auxiliary detection shaft 7 rotate synchronously, so that the touch plate 10 is regularly close to the pressure sensing unit. The pressure sensing unit can regularly sense the pushing pressure of the touch plate, and then the torsion spring 9 drives the main detection shaft 6, the auxiliary detection shaft 7 and the baffle 8 to reset.

[0021] The pressure sensing unit includes a pressure sensing mounting box 13, which is fixed to the side of the base frame 1. A horizontally arranged mounting column 11 is arranged in the pressure sensing mounting box 13. A through-length slide groove 12 is provided in the center of the mounting column 11. A sliding column 14 and a pressure sensor 16 are arranged in the slide groove 12. A horizontally arranged spring 15 is arranged between the sliding column 14 and the pressure sensor 16 for fixed connection. When the touch plate 10 rotates, it contacts the sliding column 14, thereby pushing the sliding column to slide into the inside of the slide groove, compressing the spring, and then the pressure sensor detects a certain pressure.

[0022] A data processor 27 is disposed on the outer side of the chassis 1 , and an audible and visual alarm 28 is disposed on the data processor 27 . The data processor 27 is electrically connected to the audible and visual alarm 28 , the detector 26 , and the pressure sensor 16 .

[0023] When the scraper is running, the motor drives the driving shaft and the driving wheel to rotate, causing the chain, the driven wheel and the driven shaft to rotate, and then the main rotating shaft, the transmission mechanism and the auxiliary rotating shaft to rotate, driving the rotating disk and the reflective sheet to rotate, starting the laser generator, and setting the detector according to the length of time the rotating disk rotates one circle and the length of time the reflective sheet emits the laser. When the chain breaks, the driven shaft stops rotating, the auxiliary rotating shaft and the rotating disk stop rotating, and the reflective sheet cannot reflect the laser generator within the set time or reflects it for a long time. The detector collects the data and transmits it to the data processor. At the same time, when the scraper is operating normally, the rotation of the scraper will drive the baffle to rotate regularly, thereby driving the main detection shaft and the auxiliary detection shaft to rotate, and then driving the touch plate to rotate and contact the sliding column, pushing the sliding column to slide toward the inside of the slide groove, so that the spring is compressed and the pressure sensor detects a certain pressure; when the chain breaks, the data processor is set according to the interval time of the scraper and the normal operation time of the scraper, and the length of time the touch plate forms pressure on the pressure sensor. When the pressure sensor does not detect pressure within a certain period of time or detects pressure for a long time, the data processor activates the sound and light alarm by analyzing the data to alert the staff, so as to facilitate timely handling of the broken chain and reduce safety hazards.

[0024] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A scraper chain break detection device, the scraper comprises a chassis, a horizontally arranged driving shaft and a driven shaft are passed through the chassis, two driving wheels are respectively arranged on the driving shaft, two driven wheels are respectively arranged on the driven shaft, chains are respectively sleeved on the driving wheels and driven wheels on the same side, a plurality of scrapers arranged evenly spaced are arranged between the two chains, the driving shaft is driven to rotate, and the chain, the driven shaft and the scraper are driven to rotate, characterized in that: The detection device includes a first detection mechanism and a second detection mechanism, and the first detection mechanism and the second detection mechanism detect whether the scraper is operating normally, so as to determine whether the chain is broken; The first detection mechanism comprises a main rotating shaft and a secondary rotating shaft arranged horizontally, the main rotating shaft is coaxially arranged with the driven shaft and the two are fixedly connected, a transmission mechanism is arranged between the main rotating shaft and the secondary rotating shaft, a rotating disk is arranged on the secondary rotating shaft, a reflective sheet is arranged on the side of the rotating disk, a horizontally arranged laser generator is passed through the base frame, the laser generator cooperates with the reflective sheet, a detector is arranged on the outer side of the base frame, and the laser generator is electrically connected to the detector; The second detection mechanism comprises a main detection shaft and a secondary detection shaft arranged coaxially, a baffle is arranged on the main detection shaft, the baffle is arranged above the scraper, the secondary detection shaft is horizontally passed through a bottom frame, a pressure sensing unit is arranged at the other end of the secondary detection shaft, a touch plate is arranged at the other end of the secondary detection shaft, and the touch plate cooperates with the pressure sensing unit; A data processor is arranged on the outer side of the chassis, an audible and visual alarm is arranged on the data processor, and the data processor is electrically connected with the audible and visual alarm, the detector and the pressure sensing unit.

2. A scraper chain break detection device according to claim 1, characterized in that: The pressure sensing unit includes a pressure sensing mounting box, which is fixed to the side of the base frame. A horizontally arranged mounting column is arranged in the pressure sensing mounting box, and a sliding column and a pressure sensor are arranged in the mounting column. A horizontally arranged spring is arranged between the sliding column and the pressure sensor. When the touch plate rotates, it contacts the sliding column, pushes the sliding column to slide and then compresses the spring, so that the pressure sensor detects the pressure.

3. A scraper chain break detection device according to claim 1, characterized in that: A torsion spring is also provided. A torsion spring groove is provided on the base frame. The torsion spring is arranged in the torsion spring groove. One end of the torsion spring is fixed to the inner wall of the torsion spring groove, and the other end of the torsion spring is fixedly connected to the outer periphery of the auxiliary detection shaft.

4. A scraper chain break detection device according to claim 1, characterized in that: The transmission mechanism comprises a main gear and a sub gear, wherein the main gear is arranged on a main rotating shaft, and the sub gear is arranged on a sub rotating shaft, and the main gear and the sub gear are meshed with each other.

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