A scraper conveyor of a fully-mechanized caving face and an intelligent conveying method thereof

Abstract

The present application relates to a kind of cleaning conveying technology, specifically a kind of scraper conveyor of fully mechanized caving face and its intelligent conveying method, including shell structure and the side double-chain scraper structure being arranged in shell structure, one side of shell structure is equipped with power device, and power device connects side double-chain scraper structure;Air inlet is arranged directly above discharge port, and air supply mechanism is arranged at air inlet, air supply mechanism is connected with side double-chain scraper structure, and when side double-chain scraper structure operates, air supply mechanism swings back and forth along the running direction of side double-chain scraper structure and sends air.The air supply mechanism cooperates with side double-chain scraper structure, and they complement each other, synchronous operation, collaborative work, so that the scraper structure after completing transportation can be cleaned immediately, avoid its on sticky accumulation too much coal cinder and cause the overall side double-chain scraper structure to reduce the conveying capacity;And because air supply mechanism and side double-chain scraper structure are cooperated by transmission, no additional control module is needed to control.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of cleaning conveying technology, specifically a kind of scraper conveyor of fully mechanized caving face and its intelligent conveying method. BACKGROUND

[0002] Caving method is in the mining thick coal seam, along the floor of coal seam or the floor of coal seam in a thickness range is arranged a mining height of 2~3m mining face, uses comprehensive mechanization method to recover, uses the effect of mine pressure or is supplemented with loosening blasting etc., makes top coal broken into bulk after, is discharged from the rear or top of support " coal window " and is exported from mining face by scraper conveyor.

[0003] The structure of scraper conveyor is divided into: edge double chain type, quasi edge double chain type, middle single chain type, middle double chain type and three chain type scraper conveyor according to the arrangement form of scraper chain;Due to the existence of active component in coal, it can be decomposed into liquid non-volatile plastic body, or called gum body, so that coal is bonded into coke.

[0004] The surface of scraper conveyor often adheres coal coke, coal powder and coal slag during conveying, which forms a thick coal deposition layer on the scraper, which reduces the conveying performance of the scraper conveyor and increases the load of the power source over a long period of time. SUMMARY

[0005] The present application aims to provide a kind of scraper conveyor of fully mechanized caving face and its intelligent conveying method to solve the problems raised in the above background.

[0006] To achieve the above object, the present application provides the following technical scheme:

[0007] A kind of scraper conveyor of fully mechanized caving face, including shell structure and the edge double chain scraper structure arranged in the shell structure, one side of the shell structure is equipped with power device, the power device is high-power motor, and power device connects the edge double chain scraper structure;

[0008] Feeding port is arranged on the top of one side of the shell structure, and discharge port is arranged on the bottom of the other side, and air inlet is arranged directly above the discharge port, air supply mechanism is arranged at the air inlet, the air supply mechanism is connected with the edge double chain scraper structure, and when the edge double chain scraper structure operates, air supply mechanism swings back and forth along the running direction of the edge double chain scraper structure.

[0009] The scraper conveyor of fully mechanized caving face as described above: the edge double chain scraper structure includes two groups of plate chains, two pairs of sprockets connecting the two groups of plate chains, and a plurality of scrapers arranged between the two groups of plate chains;

[0010] A plurality of said scrapers are distributed at equal intervals along said plate chain, said scrapers are rotatably connected to two chain pins on the same chain link near one end of said plate chain, two sprockets are connected by two sprocket shafts, one of which is connected to the output end of said high-power motor.

[0011] The scraper conveyor of the fully mechanized caving face as claimed in the above: said housing structure comprises an outer shell and side plates detachably mounted on both sides of said outer shell;

[0012] Two said sprocket shafts are rotatably installed at both ends of said side plates, and said air feeding mechanism is connected to one of said sprocket shafts.

[0013] The scraper conveyor of the fully mechanized caving face as claimed in the above: said air feeding mechanism comprises a fan mounted on said outer shell, said fan is provided with an impeller, and the central part of said impeller is connected to an impeller shaft, said impeller shaft penetrates through the shell of said fan and is rotatably matched with said shell;

[0014] Said impeller shaft is connected to one of said sprocket shafts through a main drive belt.

[0015] The scraper conveyor of the fully mechanized caving face as claimed in the above: the air outlet end of said fan is communicated with a flat air distribution nozzle through a corrugated pipe;

[0016] A wind guide groove is fixedly arranged at said air inlet, and a rotating shaft is integrally fixed on both sides of said air distribution nozzle, said rotating shaft is rotatably connected to said wind guide groove, and said rotating shaft is connected to said impeller shaft through a transmission structure.

[0017] The scraper conveyor of the fully mechanized caving face as claimed in the above: said transmission structure comprises a driven wheel rotatably arranged outside said housing structure, a secondary drive belt connecting said driven wheel and said impeller shaft, a swing plate fixed to one end of said rotating shaft, and a roller rotatably arranged at the outer edge of one side of said driven wheel;

[0018] A rolling groove is formed in the central part of said swing plate along the length direction of said swing plate, and said roller is rollingly embedded in said rolling groove.

[0019] The scraper conveyor of the fully mechanized caving face as claimed in the above: a support frame is fixedly mounted outside said housing structure, and said impeller shaft penetrates through said support frame and is rotatably matched with said support frame;

[0020] A mounting frame is also fixedly arranged outside said housing structure, and said driven wheel is rotatably mounted on said mounting frame.

[0021] The scraper conveyor of the fully mechanized caving face as claimed in the above: a feeding hopper is arranged upwardly at said feeding inlet, and a discharging hopper is arranged downwardly at said discharging outlet, both said feeding hopper and said discharging hopper are fixedly connected with said outer shell.

[0022] The scraper conveyor of the fully mechanized caving face as described above: the inside of the shell is provided with an embedded groove, an infrared detector is installed in the embedded groove, the infrared detector is arranged at one stroke end of the side double-chain scraper structure, and the infrared detector communicates with the high-power motor.

[0023] An intelligent conveying method for coal mining on a fully mechanized caving face using the scraper conveyor as described above, comprising the following steps:

[0024] Step one, "three flat" adjustment, adjusting the side double-chain scraper structure into a horizontal straight line state, leveling the feed inlet, the base of the power device, and the two pairs of chain wheels;

[0025] Step two, "three straight" adjustment, adjusting the feed hopper and the discharge hopper on the shell structure to be horizontal and located on parallel straight lines; ensuring that the shaft center of the power device is straight, i.e., the sprocket shaft of the chain wheel is straight;

[0026] Step three, "one stable" check, checking the stability of the entire scraper conveyor and pre-starting, without shaking when starting;

[0027] Step four, "two complete" check, including the number of scrapers and the completeness of each link and ring in the plate chain;

[0028] Step five, "one not leaking" check, ensuring that the interfaces such as the feed hopper and the discharge hopper are tight and do not leak coal;

[0029] Step six, "two not" check, checking and ensuring that the plate chain does not deviate and does not drift after pre-starting;

[0030] Step seven, starting operation, connecting the power supply to the power device, and discharging the top coal on the coal mining face from the comprehensive machine into the scraper conveyor; and starting the infrared detector to monitor the coal ash layer adhered to the scraper.

[0031] Compared with the prior art, the beneficial effects of the present application are: in the present application, a wind supply mechanism is added to the conventional side double-chain scraper conveyor, and the wind supply mechanism cooperates with the side double-chain scraper structure, complementing each other, synchronously operating, and working in cooperation, so that the scraper structure after completing the transportation can be cleaned in time, avoiding the accumulation of too much coal ash on it and reducing the conveying capacity of the overall side double-chain scraper structure; and since the wind supply mechanism and the side double-chain scraper structure are cooperated through transmission, no additional control module is needed for control, so the cooperation degree is high. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a structural schematic view of the scraper conveyor of the fully mechanized caving face.

[0033] Figure 2 It is another structural schematic view of the scraper conveyor of the fully mechanized caving face.

[0034] Figure 3 Figure 6 is a schematic diagram of the structure after one side of the side plate and the main drive belt are detached.

[0035] Figure 4 Figure 7 is a schematic diagram of the partial components of the air feeding mechanism after being disassembled.

[0036] Figure 5 Figure 8 is a schematic diagram of the driven wheel, the swing plate and the rotating shaft when being matched.

[0037] Figure 6 Figure 9 is a schematic diagram of the structure after the roller is detached from the rolling groove on the basis of Figure 5 .

[0038] Figure 7 Figure 10 is a schematic diagram of the structure of the edge double-chain scraper.

[0039] Figure 8 Figure 11 is a schematic diagram of the structure after the individual scraper is detached from the plate chain on the basis of Figure 7 .

[0040] Figure 9 Figure 12 is a schematic diagram of the infrared detector in the shell.

[0041] Figure 1 is a schematic diagram of the structure of the scraper conveyor according to the present application. In the figure, 1 is the shell, 2 is the side plate, 3 is the feeding hopper, 4 is the discharging hopper, 5 is the high-power motor, 6 is the chain wheel, 7 is the plate chain, 8 is the scraper, 9 is the main drive belt, 10 is the impeller shaft, 11 is the fan, 12 is the corrugated pipe, 13 is the air guide groove, 14 is the gas distribution nozzle, 15 is the rotating shaft, 16 is the auxiliary drive belt, 17 is the driven wheel, 18 is the roller, 19 is the swing plate, 20 is the support frame, 21 is the mounting frame, 22 is the embedded groove, and 23 is the infrared detector. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0043] Please refer to Figures 1-9 , as an embodiment of the present application, the scraper conveyor of the fully-mechanized caving face comprises a shell structure and an edge double-chain scraper structure arranged in the shell structure, wherein the edge double-chain scraper structure and the shell structure form an edge double-chain scraper conveyor.

[0044] One side of the shell structure is provided with a power device, the power device is a high-power motor 5, and the power device is connected to the edge double-chain scraper structure.

[0045] A feeding port is arranged above one side of the shell structure, a discharging port is arranged below the other side, and an air inlet is arranged directly above the discharging port, wherein the air inlet is provided with an air supply mechanism connected with the edge double-chain scraper structure, and the air supply mechanism swings back and forth along the running direction of the edge double-chain scraper structure to strip the slag adhered to the upper layer of the double-chain scraper structure and discharge the slag from the discharging port when the edge double-chain scraper structure runs.

[0046] The air supply mechanism is added to the conventional edge double-chain scraper conveyor in the application, and the air supply mechanism cooperates with the edge double-chain scraper structure, and the two complement each other, synchronously run, and work in cooperation, so that the scraper structure after completing the transportation can be cleaned in time, and the accumulation of too much slag on the scraper structure is avoided to reduce the conveying capacity of the whole edge double-chain scraper structure.

[0047] As a further scheme of the application, the edge double-chain scraper structure comprises two groups of plate chains 7, two pairs of chain wheels 6 connecting the two groups of plate chains 7, and a plurality of scrapers 8 arranged between the two groups of plate chains 7.

[0048] The plurality of scrapers 8 are distributed at equal intervals along the plate chains 7, one end of the scraper 8 close to the plate chain 7 is rotationally connected with two chain pins on the same chain link, and the two pairs of chain wheels 6 are connected through two chain wheel shafts, wherein one chain wheel shaft is connected with the output end of the high-power motor 5.

[0049] One of the chain wheel shafts is rotated by the high-power motor 5, and then one of the pairs of chain wheels 6 is rotated, the pair of chain wheels 6 acts on the two groups of plate chains 7 to drive the other chain wheel shaft to rotate, and then the edge double-chain scraper structure runs.

[0050] The mechanism of the edge double-chain scraper structure is that the minerals enter the shell structure through the feeding port and fall to the bottom layer of the shell structure, and then run along the length direction of the shell structure through the vertical scraper 8 to transport the minerals accumulated on the bottom layer of the shell structure to the discharging port.

[0051] As a further scheme of the application, the shell structure comprises an outer shell 1 and side plates 2 detachably mounted on both sides of the outer shell 1.

[0052] The two chain wheel shafts are rotationally installed at both ends of the side plates 2, and the air supply mechanism is connected with one of the chain wheel shafts.

[0053] When the edge double-chain scraper structure is running, one of the chain wheel shafts drives the air feeding mechanism to work, which includes two actions: one is to generate air flow and blow it to the air inlet, and the other is to change the direction of the air flow regularly along the running direction of the edge double-chain scraper structure, thereby expanding the air feeding range and reducing the difficulty of peeling the coal residue adhered to the scraper 8.

[0054] As a further scheme of the present application, the air feeding mechanism comprises a fan 11 installed on the shell 1, a impeller is arranged in the fan 11, and the impeller is connected with a impeller shaft 10 at the center of the impeller, the impeller shaft 10 penetrates through the shell of the fan 11 and is rotationally connected with the shell.

[0055] The impeller shaft 10 is connected with one of the chain wheel shafts through a main drive belt 9.

[0056] When the edge double-chain scraper structure is running, one of the chain wheel shafts drives the air feeding mechanism to work, which includes two actions: one is to generate air flow and blow it to the air inlet, and the other is to change the direction of the air flow regularly along the running direction of the edge double-chain scraper structure, thereby expanding the air feeding range and reducing the difficulty of peeling the coal residue adhered to the scraper 8.

[0057] As a further scheme of the present application, the air outlet of the fan 11 is connected with a flat air distribution nozzle 14 through a corrugated pipe 12.

[0058] A wind guide groove 13 is fixedly arranged at the air inlet, and a rotating shaft 15 is integrally arranged on both sides of the air distribution nozzle 14, the rotating shaft 15 is rotationally connected with the wind guide groove 13, and the rotating shaft 15 is connected with the impeller shaft 10 through a transmission structure.

[0059] The transmission structure is used to drive the air distribution nozzle 14 to swing alternately along the running direction of the edge double-chain scraper structure in the wind guide groove 13.

[0060] The air flow generated by the fan 11 enters the flat air distribution nozzle 14 through the air outlet and the corrugated pipe 12, and is finally blown out from the port of the air distribution nozzle 14 and blows to a layer of empty edge double-chain scraper structure above the discharge port, so that the mineral powder adhered thereon is peeled off from the scraper 8 and discharged through the discharge port.

[0061] At the same time, the transmission structure drives the rotating shaft 15 to rotate alternately in two directions with a small amplitude, so as to drive the air distribution nozzle 14 to swing alternately in the wind guide groove 13, thereby reducing the difficulty of peeling the adhered mineral powder.

[0062] As a further scheme of the present application, the transmission structure comprises a driven wheel 17 rotationally arranged outside the shell structure, a secondary drive belt 16 connecting the driven wheel 17 and the impeller shaft 10, a swing plate 19 fixed to one end of the rotating shaft 15, and a roller 18 rotationally arranged at the outer edge of one side of the driven wheel 17.

[0063] The central part of the swing plate 19 is provided with a rolling groove along the length direction, and the roller 18 is rollingly fitted in the rolling groove.

[0064] During the rotation of the impeller shaft 10, the driven wheel 17 is driven to rotate through the secondary driving belt 16, and then the roller 18 is in a circular motion; the roller 18 in the circular motion drives the swing plate 19 to swing alternately in a small amplitude through the cooperation with the rolling groove, and finally the rotating shaft 15 rotates alternately in a small amplitude in two directions.

[0065] As a further scheme of the present application, in order to increase the working stability of the impeller shaft 10, a support frame 20 is fixedly installed outside the shell structure, and the impeller shaft 10 passes through the support frame 20 and is rotationally connected with the support frame 20.

[0066] The outer part of the shell structure is also fixedly provided with a mounting frame 21, and the driven wheel 17 is rotationally mounted on the mounting frame 21.

[0067] Since the support frame 20 is arranged, the impeller shaft 10 can be rotationally connected with the fan 11 shell and the support frame 20 at the same time, so that the stable rotation is realized and the circular runout during the rotation of the impeller shaft 10 is effectively reduced.

[0068] As a further scheme of the present application, a feeding hopper 3 is arranged upward at the feeding port, and a discharging hopper 4 is arranged downward at the discharging port, and the feeding hopper 3 and the discharging hopper 4 are fixedly connected with the shell 1.

[0069] The feeding hopper 3 and the discharging hopper 4 arranged at the feeding port and the discharging port form a fence, respectively, so as to avoid the spread of the mineral materials.

[0070] As a further scheme of the present application, an embedded groove 22 is arranged in the inside of the shell 1, an infrared detector 23 is installed in the embedded groove 22, the infrared detector 23 is arranged at one stroke end of the side double-chain scraper structure, and the infrared detector 23 communicates with the high-power motor 5.

[0071] The infrared detector 23 detects the side double-chain scraper structure in the upper layer and the mineral slag and powder adhered to the scraper 8 in real time; when the thickness of the mineral slag and powder adhered to the scraper 8 exceeds the set value, the infrared detector 23 sends a signal to the high-power motor 5, so that the high-power motor 5 stops working and reminds the maintenance personnel to check whether the air supply mechanism has a fault; if there is no fault, it indicates that the mineral humidity is high and the adhesion is strong, so a layer of the mineral slag and powder adhered to the scraper 8 needs to be manually removed by manpower, so as to avoid that the thickness of the mineral slag and powder layer on the scraper 8 is too thick and the conveying capacity of the conveyor is reduced, and the load of the power device is also increased.

[0072] In addition, the application also proposes an intelligent conveying method for coal mining on a fully-mechanized caving face using the scraper conveyor as described above, comprising the following steps:

[0073] Step one, "three flat" adjustment, adjusting the side double-chain scraper structure into a horizontal straight line state, leveling the feed inlet, the base of the power device, and the two pairs of chain wheels 6;

[0074] Step two, "three straight" adjustment, adjusting the feed hopper 3 and the discharge hopper 4 on the shell structure to be horizontal and located on parallel straight lines; ensuring that the shaft center of the power device is straight, i.e., the sprocket shaft of the chain wheel 6 is straight;

[0075] Step three, "one stable" check, checking the stability of the entire scraper conveyor and pre-starting, without shaking when starting;

[0076] Step four, "two complete" check, including the number of scrapers 8 and the completeness of each link and chain ring in the plate chain 7;

[0077] Step five, "one not leaking" check, ensuring that the interfaces at the feed hopper 3 and the discharge hopper 4 are tight and do not leak coal;

[0078] Step six, "two not" check, checking and ensuring that the plate chain 7 does not deviate and does not float after pre-starting;

[0079] Step seven, starting operation, connecting the power supply to the power device, and simultaneously discharging the top coal on the coal mining face from the comprehensive machinery into the scraper conveyor from the feed hopper 3; and starting the infrared detector 23 to monitor the layer of coal ash adhered to the scraper 8;

[0080] During the conveying process, if the power device suddenly stops working, it is necessary to check whether there is a fault in the air supply mechanism; if there is no fault, it is necessary to manually shovel off a layer of slag and ore powder adhered to the scraper 8.

[0081] The above embodiments are exemplary and not restrictive, and therefore the technical solutions of the application can be implemented in other specific forms without departing from the spirit or essential characteristics of the application.

Claims

1. A scraper conveyor of a fully-mechanized coal mining face, comprising a housing structure and a side double-chain scraper structure arranged in the housing structure, a power device being mounted on one side of the housing structure and connected with the side double-chain scraper structure; a feeding port being arranged above the one side of the housing structure, a discharging port being arranged below the other side of the housing structure, and an air inlet being arranged directly above the discharging port, an air supply mechanism being arranged at the air inlet and connected with the side double-chain scraper structure and swinging to and fro along the running direction of the side double-chain scraper structure when the side double-chain scraper structure runs; the housing structure comprising an outer shell (1), the air supply mechanism comprising a fan (11) mounted on the outer shell (1), an impeller being arranged in the fan (11), and the impeller being connected with an impeller shaft (10) at the center of the impeller, the impeller shaft (10) penetrating through the casing of the fan (11) and being rotationally matched with the casing; the impeller shaft (10) being connected with one of the chain wheel shafts through a main drive belt (9); the air outlet end of the fan (11) being communicated with a flat gas distribution nozzle (14) through a corrugated pipe (12); a wind guide groove (13) being fixedly arranged at the air inlet, a rotating shaft (15) being integrally fixed on both sides of the gas distribution nozzle (14), the rotating shaft (15) being rotationally connected with the wind guide groove (13), and the rotating shaft (15) being connected with the impeller shaft (10) through a transmission structure; the transmission structure comprising a driven wheel (17) rotationally arranged outside the housing structure, a secondary drive belt (16) connecting the driven wheel (17) with the impeller shaft (10), a swinging plate (19) fixed at one end of the rotating shaft (15), and a roller (18) rotationally arranged at the outer edge of one side of the driven wheel (17); a rolling groove being formed in the center of the swinging plate (19) along the length direction of the swinging plate (19), and the roller (18) being rollingly fitted in the rolling groove; the side double-chain scraper structure comprising two groups of plate chains (7), two pairs of chain wheels (6) connecting the two groups of plate chains (7), and a plurality of scrapers (8) arranged between the two groups of plate chains (7); the plurality of scrapers (8) being equidistantly distributed along the plate chains (7), one end of each of the scrapers (8) being rotationally connected with two chain pins on the same chain link, and the two pairs of chain wheels (6) being connected through two chain wheel shafts, one of the chain wheel shafts being connected with the output end of the power device; the housing structure further comprising side plates (2) detachably mounted on both sides of the outer shell (1); the two chain wheel shafts being rotationally mounted at both ends of the side plates (2), and the air supply mechanism being connected with one of the chain wheel shafts; a support frame (20) being fixedly mounted outside the housing structure, the impeller shaft (10) penetrating through the support frame (20) and being rotationally matched with the support frame (20); an installation frame (21) being further fixedly arranged outside the housing structure, and the driven wheel (17) being rotationally mounted on the installation frame (21); a feeding hopper (3) being arranged upwardly at the feeding port, and a discharging hopper (4) being arranged downwardly at the discharging port, the feeding hopper (3) and the discharging hopper (4) being fixedly connected with the outer shell (1). characterized in that ​ ​ ​ ​ ​ ​ 2. A scraper conveyor for an open- cut coal face according to claim 1 wherein, ​ ​ 3. A scraper conveyor for an open- cut coal face according to claim 2, wherein, ​ ​ 4. A scraper conveyor for an open-pit working face according to claim 1, characterised in that, ​ ​ 5. A scraper conveyor for an open- cut coal face according to claim 3 wherein, ​ 6. A scraper conveyor for an open-pit working face according to claim 5, characterised in that, The inside of the shell (1) is provided with an embedded groove (22), and an infrared detector (23) is installed in the embedded groove (22), the infrared detector (23) is arranged at one stroke end of the edge double-chain scraper structure, and the infrared detector (23) communicates with the power device.

7. An intelligent method of conveying a scraper conveyor of a face of a longwall mine as claimed in claim 6, characterised in that, The method comprises the following steps: Step one, "three flat" adjustment, adjusting the edge double-chain scraper structure into a horizontal straight line state, leveling the feed inlet, the base of the power device, and the two pairs of chain wheels (6); Step two, "three straight" adjustment, adjusting the feed hopper (3) and the discharge hopper (4) on the shell structure to be horizontal and on parallel straight lines; ensuring that the shaft center of the power device is straight, i.e. the sprocket shaft of the chain wheel (6) is straight; Step three, "one stable" check, checking the stability of the installation of the entire scraper conveyor, and pre-starting, without swinging when starting; Step four, "two complete" check, including the number of scrapers (8) and the completeness of each chain joint and link in the plate chain (7); Step five, "one not leaking" check, ensuring that the interfaces at the feed hopper (3) and the discharge hopper (4) are tight and do not leak coal; Step six, "two not" check, checking and ensuring that the plate chain (7) does not deviate and does not drift after pre-starting; Step seven, starting operation, connecting the power supply of the power device, discharging the top coal on the coal mining face from the comprehensive machine into the conveyor from the feed hopper (3), and starting the infrared detector (23) to monitor the coal ash layer adhered to the scraper (8).

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