CN115057257A - Detection and control system for preventing expansion damage of ore powder bulk head chute barrel - Google Patents
Detection and control system for preventing expansion damage of ore powder bulk head chute barrel Download PDFInfo
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- CN115057257A CN115057257A CN202210766160.1A CN202210766160A CN115057257A CN 115057257 A CN115057257 A CN 115057257A CN 202210766160 A CN202210766160 A CN 202210766160A CN 115057257 A CN115057257 A CN 115057257A
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- 239000000843 powder Substances 0.000 title claims abstract description 26
- 238000001514 detection method Methods 0.000 title claims abstract description 19
- 230000001105 regulatory effect Effects 0.000 claims abstract description 17
- 238000004804 winding Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 9
- 239000011707 mineral Substances 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 40
- 239000010959 steel Substances 0.000 claims description 40
- 230000006698 induction Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 11
- 239000010985 leather Substances 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
- 235000017491 Bambusa tulda Nutrition 0.000 claims 1
- 241001330002 Bambuseae Species 0.000 claims 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 1
- 239000011425 bamboo Substances 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 210000003128 head Anatomy 0.000 description 67
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G67/00—Loading or unloading vehicles
- B65G67/02—Loading or unloading land vehicles
- B65G67/04—Loading land vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G67/00—Loading or unloading vehicles
- B65G67/02—Loading or unloading land vehicles
- B65G67/04—Loading land vehicles
- B65G67/06—Feeding articles or materials from bunkers or tunnels
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Control Of Conveyors (AREA)
Abstract
The invention provides a detection and control system for preventing a broken mineral powder bulk head chute, which comprises a vehicle travelling mechanism, a hoisting mechanism, a current transformer, a signal transmitter, a tray bulk head mechanism, an image recognition mechanism, a PLC (programmable logic controller) control system, an electric stop valve and a flow regulating valve, wherein the vehicle travelling mechanism is connected with the current transformer; the winding mechanism and the image recognition mechanism are arranged beside the vehicle travelling mechanism; the tray bulk head mechanism is in transmission connection with the hoisting mechanism; the hoisting mechanism is connected with a current transformer, and the current transformer is connected with a PLC control system through a signal transmitter; the PLC control system is connected with the electric stop valve and the flow regulating valve. The detection and control system for preventing the expansion damage of the ore powder bulk head chute barrel can realize automatic detection and judgment on whether the tray is opened or not in multiple ways, and can alarm and close the stop valve and the flow regulating valve in time under abnormal conditions; the probability of manual misjudgment is greatly reduced, the manual operation intensity and workload are reduced, and the reliability and safety of the system are improved.
Description
Technical Field
The invention relates to the field of automatic mineral powder loading systems, in particular to a detection and control system for preventing expansion and breakage of a mineral powder bulk head chute barrel.
Background
In various enterprises for grinding blast furnace water granulated slag into powder and the like, most of finished products, namely powder ore powder, are produced by tank cars. In order to load the ore powder, a bulk head on a chute for delivering the ore powder is firstly aligned to a material loading hole, and a bowl-shaped tray similar to an inverted buckle is generally arranged below the bulk head in order to prevent the residual ore material from falling down when the bulk head delivers the ore powder and rises and to pull the chute and the bulk head to follow up and down to move. Since the pallet and the bulk head are placed in the vehicle hole, the pallet cannot be observed by eyes whether the pallet is completely opened, if the delivery stop valve and the flow regulating valve are completely opened at the moment, the pallet can be delivered in case the pallet is not completely opened (for example, the pallet bracket is deformed and blocked or the vehicle material hole is provided with a net-shaped net bag), and since the pallet is not completely opened, the ore powder with pressure impacts the chute and the bulk head like flood. Because the chute tube consists of the steel sleeve with 4 sections of telescopic inner parts and the leather bag at the periphery, the steel sleeve and the leather bag can be immediately disjointed and broken under the impact force, and a large amount of mineral aggregate of the broken chute tube is sprayed to vehicles and the ground, so that equipment is damaged, materials are wasted, and the environment is polluted. Therefore, the operator who carries out manual delivery can accurately grasp whether the tray is completely opened or not during the delivery process. General operators adopt 2 methods of visual inspection and manual small-flow delivery to observe whether ash is emitted or not to carry out detection and control simultaneously: the method comprises the steps that a steel wire rope of a well-centered bulk head is slowly lowered manually, when the bulk head is lowered, once the outer wall of the bulk head contacts the edge of a material opening of a vehicle, the outer weight of the bulk head is completely received by the vehicle, calculation is carried out by an operator from this moment, meanwhile, a tray and a tray support inside the bulk head continue to descend, if the time is counted from the moment that the bulk head contacts the vehicle until a winding descending limit appears, the time exceeds 2-3 seconds, the tray is basically opened (actually is not necessary), and if the time is less than 2 seconds, the tray is certainly not opened or is not completely opened. The winch descending limit is often inaccurate and is not opened sometimes, but the time is more than 2-3 seconds. Therefore, in the delivery stage, an operator generally needs to fully open the stop valve for delivery of the bottom warehouse, then open the opening of the flow control valve on the same pipeline to 10% first, observe whether ash is emitted around the bulk head, if the ash is emitted seriously, the tray is not fully opened, the bulk head needs to be lifted up again, then the bulk head is put down or the tray is placed beside the material hole to observe whether foreign matters or net bags are clamped, and the delivery can be performed again after the tray is completely opened. If the ash is not seriously blown out or the chute is not seriously shaken, the flow control valve is opened to 20 percent, the observation is carried out for 10 seconds, and if no problem exists, the opening degree of the flow control valve is opened to 50 percent on the HMI picture, and the delivery is continuously carried out until the delivery is finished. When the flow rate of 20% is adjusted to 50%, the operator needs to further observe to prevent the occurrence of the slipping cylinder. On one hand, the method has high labor intensity of operators and is easy to fatigue; on the other hand, in case of abnormality, the equipment is easily damaged and the environment is polluted, and the treatment is troublesome (repairing a chute tube, cleaning leaked mineral powder and the like). Sometimes, in the process of delivery, due to too large flow of the upper-level warehouse area or incomplete opening (partial opening) of the tray, close attention is needed in the delivery process, and operation centralization and less humanization are not facilitated.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a detection and control system for preventing the bulk head chute tube of the expanded and broken mineral powder, which can automatically close the tray by utilizing a video identification method from time, absolute distance and failure of the former two; whether the tray is opened or not is automatically judged from detection control without personnel participation, the judgment speed, the abnormal processing speed and the judgment accuracy are better and faster than those of manual judgment, and the working intensity and the workload of operators are greatly reduced.
In order to achieve the purpose, the invention provides a detection and control system for preventing a broken mineral powder bulk head slide barrel, which comprises a vehicle travelling mechanism, a winding mechanism, a current transformer, a signal transmitter, a tray bulk head mechanism, an image recognition mechanism, a PLC control system, an electric stop valve and a flow regulating valve, wherein the vehicle travelling mechanism is connected with the current transformer; the hoisting mechanism and the image recognition mechanism are arranged beside the vehicle travelling mechanism; the tray bulk head mechanism is in transmission connection with the hoisting mechanism; the hoisting mechanism is connected with the current transformer, and the current transformer is connected with the PLC control system through the signal transmitter; and the PLC control system is connected with the electric stop valve and the flow regulating valve.
Preferably, the hoisting mechanism comprises a hoisting motor, a motor encoder and a hoisting drum; the winding drum is in transmission connection with the winding motor, and the winding motor is connected with the motor encoder.
Preferably, the tray bulk head mechanism comprises a steel wire rope, a plurality of steel sleeves, a leather bag, a bulk head shell, a circular hook, a tray upper support, a tray, a proximity switch, a compressed air pipeline and sensor supporting steel bars; the bulk head is connected to the bottom of the steel sleeve, the steel sleeve is sleeved outside the steel wire rope, and the leather bag cover is arranged outside the steel sleeve; the bulk head outer shell is arranged on the periphery of the bulk head; the top end of the steel wire rope is wound and connected on the hoisting drum; the round hook is connected to the bottom end of the steel wire rope; the tray is connected to the lower part of the circular hook sequentially through the tray support and the tray upper support; the proximity switch comprises a proximity switch magnet part, a proximity switch induction part and a signal cable; the proximity switch magnet part is arranged on the upper bracket of the tray, and the proximity switch induction part is connected to the interior of the bulk head through the sensor support steel bar; one end of the signal cable is connected with the proximity switch sensing part, the other end of the signal cable is connected with a male connector of a cable connector, and a cable protection steel pipe is sleeved outside the signal cable; a cable connector female head is matched with the cable connector male head and connected with the PLC control system; the compressed air pipeline is arranged in the bulk head.
Preferably, the vehicle travelling mechanism comprises a cart travelling rail beam, a plurality of cart travelling wheels, a cart driving motor, a trolley travelling rack and a trolley driving motor; the cart traveling wheels are erected on the cart traveling rail beams, and the cart driving motor is in transmission connection with the cart traveling wheels; the trolley driving motor is in transmission connection with a trolley erected on the trolley walking rack; and a laser range finder is arranged on one side of the cart walking rail beam.
Preferably, the image recognition mechanism comprises a camera, a lighting lamp, a hard disk video recorder and a computer; the camera is arranged towards the bulk head; the camera is connected with the digital video recorder, the digital video recorder is connected with the computer through the switch, and the computer is connected with the PLC control system through the switch.
Preferably, when the bulk head falls on a vehicle, the load of the hoisting motor is suddenly reduced, the current is suddenly reduced, the PLC control system starts to time until the hoisting motor descends for a limit signal, if the time is more than 2-3 seconds, the tray is judged to be opened, and if the time is less than 2 seconds, the tray is judged not to be completely opened and needs manual intervention; in addition, if the proximity switch has output, the tray is judged to be opened, otherwise, the tray is not completely opened; when delivery is started, the camera sends collected video information to the computer through the hard disk video recorder, the computer processes the video information to identify whether delivery of the bulk head is seriously grey or seriously jittered, and sends an identification result to the PLC control system, and the PLC control system determines whether to close the opening degrees of the electric stop valve and the flow regulating valve for delivery according to the identification result.
Preferably, the theoretical walking distance S of the pallet is calculated by calculating the running time of the pallet and the running speed of the winch: s ═ V × T; wherein V represents the actual lowering speed of the hoist motor; and T represents the time from the sudden drop moment of the bulk head current to the emergence of the descending limit signal of the winch.
Preferably, when the identification result indicates that the bulk head delivery is seriously grey or seriously shaken, the PLC control system gives an alarm, closes the electric stop valve and sets the opening of the flow regulating valve to be 0.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the current transformer is arranged to detect the current of the winding motor, and whether the tray is opened or not can be calculated theoretically by utilizing the descending limit limiting information of the original winding drum (qualitative judgment). It is more accurate than originally seeing and timing with artifical eyes, because the moment of contact of bulk head and the spacing arrival's of decline time are very short, and the people is difficult to judge fast accurately, and the falling speed of hoist engine is difficult manual control in addition. The operator determines whether the tray is open or not by feel and proficiency.
2. Whether the tray is opened or not is directly judged by adding a proximity switch between the bulk head and the tray, and the original bulk head does not have the sensor or similar detection means. Because the induction distance of the proximity switch induction head and the magnetic block is basically constant after the model selection is fixed, when the proximity switch detects (within 10 mm), the tray is opened, and the device is simple, economical and practical.
3. Through setting up image recognition mechanism, increase camera, digital video recorder, computer equipment promptly, it replaces people's eyes through the camera, can discern unusual image recognition that serious ash fall or serious shake etc. and tray are not opened completely, and its result is sent to PLC control system through the ethernet, is controlled by the electronic stop valve and the flow control valve of PLC control system drive delivery of goods, prevents the fault amplification, has guaranteed that equipment operation does not have the emergence of major accident to and no environmental pollution accident takes place. Namely, the sliding sleeve steel sleeve and the leather bag are prevented from being expanded and damaged due to the fact that the sliding sleeve cannot be opened, and the abnormal result that a large amount of mineral powder overflows is restrained.
Drawings
FIG. 1 is a schematic structural diagram of a detection and control system for preventing the bulk head chute tube from expanding and breaking in the embodiment of the invention;
FIG. 2 is a partial enlarged view of area A of FIG. 1;
FIG. 3 is a partial enlarged view of the area B of FIG. 1;
FIG. 4 is a schematic block diagram of the connection between the video camera and the hard disk video recorder and the PLC control system according to the embodiment of the present invention;
fig. 5 is a schematic block diagram of the entire electric control system of the embodiment of the present invention.
Detailed Description
The following description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, which are set forth in the accompanying drawings and in fig. 1-5, to provide a better understanding of the function and features of the invention.
Referring to fig. 1 to 5, a detection and control system for preventing a broken ore powder bulk head chute according to an embodiment of the present invention includes a vehicle traveling mechanism, a winding mechanism, a current transformer, a signal transmitter, a tray bulk head mechanism, an image recognition mechanism, a PLC control system 31, an electric stop valve, and a flow regulating valve; the winding mechanism and the image recognition mechanism are arranged beside the vehicle travelling mechanism; the tray bulk head mechanism is in transmission connection with the hoisting mechanism; the winding mechanism is connected with a current transformer, and the current transformer is connected with the PLC control system 31 through a signal transmitter; the PLC control system 31 connects the electric shutoff valve and the flow rate regulating valve.
In this embodiment, the hoisting mechanism includes a hoisting motor 25, a motor encoder 26 and a hoisting drum 23; the winding drum 23 is in transmission connection with a winding motor 25, and the winding motor 25 is connected with a motor encoder 26.
The tray bulk head mechanism comprises a steel wire rope 1, a plurality of steel sleeves 2, a leather bag 3, a bulk head 7, a bulk head shell 9, a round hook 4, a tray upper bracket 20, a tray bracket 8, a tray 10, a proximity switch, a compressed air pipeline 21 and sensor supporting steel bars 14; the bulk head 7 is connected to the bottom of the steel sleeve 2, the steel sleeve 2 is sleeved and connected outside the steel wire rope 1, and the leather bag 3 is covered outside the steel sleeve 2; the bulk head shell 9 is covered on the periphery of the bulk head 7; the top end of the steel wire rope 1 is wound and connected on the hoisting drum 23; the round hook 4 is connected to the bottom end of the steel wire rope 1; the tray 10 is connected below the circular hook 4 through the tray support 8 and the tray upper support 20 in sequence; the proximity switch comprises a proximity switch magnet portion 5, a proximity switch sensing portion 6 and a signal cable 16; the proximity switch magnet part 5 is arranged on the upper bracket 20 of the tray, and the proximity switch induction part 6 is connected to the inner part of the bulk head 7 through the sensor supporting steel bar 14; one end of a signal cable 16 is connected with the proximity switch sensing part 6, the other end of the signal cable 16 is connected with a cable connector male head 18, and a cable protection steel pipe 17 is sleeved outside the signal cable 16; a cable connector female head 19 is matched with the cable connector male head 18 and connected with the PLC control system 31; a compressed air duct 21 is provided in the bulk head 7.
The outer side of the steel sleeve 2 is provided with a leather bag 3, so that the purpose of preventing dust from escaping is achieved. The proximity switch magnet part 5 is installed on the tray 10 and the tray bracket 8, and the proximity switch induction part 6 for inducing the proximity switch magnet part 5 is installed on the fixed amount inside the bulk head 7, namely, a pit with the depth of 20mm is dug out on 3 reinforcing ribs which are originally distributed at 120 degrees, and the round proximity switch induction part 6 is fixed at the intersection by a bottom plate. The gap between the proximity switch magnet part 5 and the proximity switch induction part 6 is smaller than 10mm, so that the induction can be realized, the induction cannot be realized if the gap exceeds the gap, and the condition that the tray 10 is not completely opened is indicated.
The vehicle travelling mechanism comprises a cart travelling rail beam 11, a plurality of cart travelling wheels 13, a cart driving motor 15, a trolley travelling rack 12 and a trolley driving motor 22; the cart walking wheels 13 are erected on the cart walking rail beams 11, and the cart driving motor 15 is in transmission connection with the cart walking wheels 13; the trolley driving motor 22 is in transmission connection with a trolley erected on the trolley walking rack 12; one side of the cart walking rail beam 11 is provided with a laser range finder 27.
The image recognition mechanism comprises a camera 28, a lighting lamp 24, a hard disk video recorder 29 and a computer 30; the camera 28 is arranged towards the bulk head 7; the camera 28 is connected with a hard disk video recorder 29, the hard disk video recorder 29 is connected with a computer 30 through an exchanger, and the computer 30 is connected with a PLC control system 31 through the exchanger.
When the bulk head 7 falls on a vehicle, the load of the hoisting motor 25 is suddenly reduced, the current also suddenly drops, the PLC control system 31 starts to time until the hoisting motor drops out of a limit signal, if the time is more than 2-3 seconds, the tray 10 is judged to be opened, and if the time is less than 2 seconds, the tray 10 is judged not to be opened completely, and manual intervention is needed; in addition, if the distance between the proximity switch magnet part 5 and the proximity switch induction part 6 is less than 10mm, under the normal condition of the proximity switch, a signal is output to indicate that the tray 10 is opened; otherwise it means that the tray 10 is not fully opened; when the shipment is started, the camera 28 sends the collected video information to the computer 30 through the hard disk video recorder 29, the computer 30 processes the video information to identify whether the shipment of the bulk head 7 is seriously grayed or seriously jittered, and sends the identification result to the PLC control system 31, and the PLC control system 31 determines whether to close the opening of the electric shutoff valve and the flow regulating valve for the shipment according to the identification result.
Calculating the theoretical walking distance S of the pallet 10 by calculating the running time of the pallet 10 and the running speed of the hoist: s ═ V × T; wherein V represents the actual lowering speed of the hoist motor 25; t represents the time from the moment when the bulk head 7 suddenly drops the current until the hoist lowering limit signal comes out.
When the recognition result indicates that the bulk head 7 is heavily ash-laden or heavily shaken in delivery, the PLC control system 31 gives an alarm, and the PLC control system 31 closes the electric shutoff valve and sets the opening of the flow rate adjustment valve to 0.
The detection and control system for preventing the expansion damage of the ore powder bulk head chute barrel provided by the embodiment of the invention has the following working principle:
through detecting the current of the hoisting motor 25, when the hoisting motor 25 descends, after the bulk head 7 contacts with a vehicle, the weight of the external part of the bulk head 7 and the steel sleeve 2 falls on the vehicle, at the moment, the weight born by the steel wire rope 1 is reduced greatly, the current of the hoisting motor 25 has a descending mutation, and the PLC control system 31 starts timing until a descending limit limiting signal of the hoisting motor 25 appears. Since the lowering speed of the hoist motor 25 is known in advance (the hoist motor 25 has been changed to inverter control, and the speed setting is kept constant), the distance S from the point at which the bulk head 7 contacts the vehicle to the point at which the lowering limit occurs is the speed V x time T. When S is 180mm or more, it indicates that the tray 10 is theoretically opened. In addition to preventing miscalculations. A proximity switch induction part 6 is added on a movable support beam of a tray support 8 in the bulk head 7, a proximity switch magnet part 5 is added on a fixed beam of the bulk head 7, and when the distance between the proximity switch magnet part 5 and the proximity switch induction part 6 is less than or equal to 10mm, the tray 10 is opened. In addition, in order to prevent false detection, a camera is used for replacing eyes of a person, whether the loose loading head 7 seriously emits ash or severely shakes during the loading process is monitored in real time, the result of image recognition is sent to the PLC control system 31 or the DCS system, and the PLC control system 31 or the DCS system outputs the result to a stop valve and a flow regulating valve for delivery. Under the abnormal condition, the electric stop valve and the flow regulating valve are immediately closed, and meanwhile, an alarm is reported on the HMI displayer to remind workers.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (8)
1. The utility model provides a prevent to rise detection and control system that bad powdered ore bulk loading head swift current section of thick bamboo which characterized in that: the system comprises a vehicle travelling mechanism, a winding mechanism, a current transformer, a signal transmitter, a tray bulk head mechanism, an image recognition mechanism, a PLC control system (31), an electric stop valve and a flow regulating valve; the hoisting mechanism and the image recognition mechanism are arranged beside the vehicle travelling mechanism; the tray bulk head mechanism is in transmission connection with the hoisting mechanism; the winding mechanism is connected with the current transformer, and the current transformer is connected with the PLC control system (31) through the signal transmitter; and the PLC control system (31) is connected with the electric stop valve and the flow regulating valve.
2. The system for detecting and controlling the chute of the bulk head for preventing the expanded broken ore powder according to claim 1, wherein the hoisting mechanism comprises a hoisting motor (25), a motor encoder (26) and a hoisting drum (23); the hoisting winding drum (23) is in transmission connection with the hoisting motor (25), and the hoisting motor (25) is connected with the motor encoder (26).
3. The detection and control system for preventing the ore powder bulk head chute barrel from being expanded and broken according to claim 2, wherein the tray bulk head mechanism comprises a steel wire rope (1), a plurality of steel sleeves (2), a leather bag (3), a bulk head (7), a bulk head shell (9), a round hook (4), a tray upper bracket (20), a tray bracket (8), a tray (10), a proximity switch, a compressed air pipeline (21) and a sensor support steel bar (14); the bulk head (7) is connected to the bottom of the steel sleeve (2), the steel sleeve (2) is sleeved outside the steel wire rope (1), and the leather bag (3) is covered outside the steel sleeve (2); the bulk head shell (9) is covered on the periphery of the bulk head (7); the top end of the steel wire rope (1) is wound and connected on the hoisting drum (23); the round hook (4) is connected to the bottom end of the steel wire rope (1); the tray (10) is connected to the lower part of the circular hook (4) sequentially through the tray support (8) and the tray upper support (20); the proximity switch comprises a proximity switch magnet part (5), a proximity switch induction part (6) and a signal cable (16); the proximity switch magnet part (5) is mounted on the tray upper bracket (20), and the proximity switch induction part (6) is connected to the interior of the bulk head (7) through the sensor supporting steel bar (14); one end of the signal cable (16) is connected with the proximity switch sensing part (6), the other end of the signal cable (16) is connected with a cable connector male head (18), and a cable protection steel pipe (17) is sleeved outside the signal cable (16); a female cable connector head (19) is matched with the male cable connector head (18) and connected with the PLC control system (31); the compressed air pipeline (21) is arranged in the bulk head (7).
4. The system for detecting and controlling the ore powder bulk head chute barrel with the expanded damages preventing function according to claim 3, wherein the vehicle traveling mechanism comprises a cart traveling rail beam (11), a plurality of cart traveling wheels (13), a cart driving motor (15), a trolley traveling rack (12) and a trolley driving motor (22); the cart traveling wheels (13) are erected on the cart traveling rail beam (11), and the cart driving motor (15) is in transmission connection with the cart traveling wheels (13); the trolley driving motor (22) is in transmission connection with a trolley erected on the trolley walking rack (12); and a laser range finder (27) is arranged on one side of the cart walking rail beam (11).
5. The system for detecting and controlling a chute of a mineral powder bulk head for preventing expansion damage according to claim 4, wherein the image recognition mechanism comprises a camera (28), a lighting lamp (24), a hard disk video recorder (29) and a computer (30); the camera (28) is arranged towards the bulk head (7); the camera (28) is connected with the hard disk video recorder (29), the hard disk video recorder (29) is connected with the computer (30) through a switch, and the computer (30) is connected with the PLC control system (31) through the switch.
6. The detection and control system for preventing the ore powder bulk head chute barrel from being broken by expansion according to claim 5, wherein when the bulk head (7) falls on a vehicle, the load of the hoisting motor (25) is suddenly reduced, and the current is also suddenly reduced, at this time, the PLC control system (31) starts to time until the hoisting motor descending limit signal comes out, if the time is more than 2-3 seconds, the tray (10) is judged to be opened, and if the time is less than 2 seconds, the tray (10) is judged not to be completely opened, and manual intervention is needed; in addition, if the proximity switch has output, the tray (10) is judged to be opened, otherwise, the tray (10) is not completely opened; when delivery is started, the camera (28) sends collected video information to the computer (30) through the hard disk video recorder (29), the computer (30) processes the video information to identify whether delivery of the bulk head (7) is seriously grey or seriously jittered, and sends an identification result to the PLC control system (31), and the PLC control system (31) determines whether to close the opening degrees of the electric stop valve and the flow regulating valve for delivery according to the identification result.
7. The system for detecting and controlling the ore powder bulk head chute barrel with the function of preventing the expansion damage according to claim 6, wherein the theoretical walking distance S of the tray (10) is calculated by calculating the running time of the tray (10) and the running speed of the winch, and the theoretical walking distance S of the tray (10) is calculated by: s ═ V × T; wherein V represents the actual lowering speed of the hoisting motor (25); t represents the time from the sudden drop of the current of the bulk head (7) to the coming out of the descending limit signal of the winch.
8. The detection and control system for preventing the collapse of the ore powder bulk head chute as claimed in claim 7, wherein when the identification result indicates that the bulk head (7) is seriously ash-blown or seriously shaken in delivery, the PLC control system (31) gives an alarm, and the PLC control system (31) closes the electric stop valve and sets the opening of the flow regulating valve to 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210766160.1A CN115057257A (en) | 2022-07-01 | 2022-07-01 | Detection and control system for preventing expansion damage of ore powder bulk head chute barrel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210766160.1A CN115057257A (en) | 2022-07-01 | 2022-07-01 | Detection and control system for preventing expansion damage of ore powder bulk head chute barrel |
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| CN115057257A true CN115057257A (en) | 2022-09-16 |
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| CN202210766160.1A Pending CN115057257A (en) | 2022-07-01 | 2022-07-01 | Detection and control system for preventing expansion damage of ore powder bulk head chute barrel |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH653651A5 (en) * | 1981-12-01 | 1986-01-15 | Adolf Kraemer | Device for preventing the formation of dust when discharging granular or powdery bulk material |
| CN201678293U (en) * | 2009-06-30 | 2010-12-22 | 无锡职业技术学院 | Novel-type cement unloading bulk machine system |
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