A mine coal belt conveyor device

Abstract

The present invention discloses a belt conveyor device for mine coal, which includes a conveying support. Ordinary buffer rollers, detection buffer rollers and adjustment buffer rollers are installed on the conveying support. The detection buffer rollers and the adjustment buffer rollers are electrically connected to a controller, and a number of ordinary buffer rollers are arranged between the detection buffer rollers and the adjustment buffer rollers. By providing the detection buffer rollers and the adjustment buffer rollers on the conveying support, the present invention detects the evenness of the coal material distribution on the conveyor belt through the detection buffer rollers, and then controls the movement of the adjustment roller blocks at the corresponding positions of the adjustment buffer rollers to raise or lower the conveyor belt at the corresponding positions, so that the coal material at the corresponding positions flows under the action of gravity to the position with less coal material, realizing the uniform function of the material and solving the problem of conveyor belt deviation from the source.

Description

Technical Field

[0001] The present invention belongs to the technical field of belt transportation, and particularly relates to a belt transportation device for mine coal. Background Art

[0002] A belt conveyor is a continuously operating transportation device, which is mainly used to transport a large amount of bulk goods, such as ores, coal, sand and other powders, lumps and packaged finished goods in heavy industrial sectors such as metallurgy, mining, power, building materials and transportation departments. The belt conveyor is the most ideal high-efficiency continuous transportation device in coal mines. Compared with other transportation devices, it not only has the advantages of long distance, large transportation volume and continuous transportation, but also runs reliably and is easy to realize automation and centralized control. Especially for high-yield and high-efficiency coal mines, the belt conveyor has become a key device for the mechatronics technology and equipment of high-efficiency coal mining. Especially in recent years, the emergence of long-distance, large-capacity and high-speed belt conveyors has further promoted their application in underground roadways of mine construction, mine surface transportation systems, open-pit mines and concentrators.

[0003] During the coal mining process, it is necessary to use a conveyor belt to transport the coal outside the mine. Generally, the transportation path is long, and the road surface dug in the coal mine is uneven. The conveying device placed on the coal mine road surface cannot be completely balanced. During the coal conveying process, vibrations often occur, resulting in uneven distribution of coal on the conveyor belt. The uneven distribution of coal on the conveyor belt will cause the conveyor belt to deviate. Although most of the existing technologies adjust by installing a deviation correction device, the deviation correction process takes a certain amount of time and cannot immediately correct the conveyor belt. Therefore, during the deviation correction time, due to the deviation of the conveyor belt and the lack of support from the idlers, the coal will still fall from the conveyor belt. Therefore, the deviation correction device cannot fundamentally solve the problem of uneven distribution of coal during the transportation process on the conveyor belt. Summary of the Invention

[0004] Aiming at the deficiencies existing in the use of the existing belt transportation device for mine coal in the background art, the present invention provides a belt transportation device for mine coal, which has the advantage of promoting uniform coal material on the conveyor belt and solves the problems put forward in the above background art.

[0005] The present invention provides the following technical solution: a belt conveyor device for mine coal, including a conveying support, on which a common buffer idler, a detection buffer idler and an adjustment buffer idler are installed. The detection buffer idler and the adjustment buffer idler are electrically connected to a controller. A number of common buffer idlers are arranged between the detection buffer idler and the adjustment buffer idler. The detection buffer idler includes an intermediate support, a detection left idler, a detection right idler and a detection middle idler. The intermediate support is fixedly connected to the conveying support. Side struts are arranged on both sides of the conveying support. The two ends of the detection middle idler are rotatably connected to the intermediate support, and the two ends of the detection left idler and the detection right idler are respectively connected to the intermediate support and the side strut.

[0006] Further, the detection left idler, the detection right idler and the detection middle idler have the same structure. The detection left idler includes a detection main roller body, on which a detection roller block is movably sleeved. One end of the detection roller block located inside the detection main roller body is connected with a detection roller magnet block. A detection roller shaft is coaxially assembled inside the detection main roller body, and a detection roller coil is arranged on the detection roller shaft. The detection roller magnet blocks and the detection roller coils are in one-to-one correspondence. A detection roller sliding cover is arranged inside the detection main roller body. The detection roller magnet blocks and the detection roller coils are located inside the detection roller sliding cover, and the detection roller block slides along the inner wall of the detection roller sliding cover. A detection roller spring is arranged inside the detection roller sliding cover. The lower end of the detection roller spring is fixed, and the upper end of the detection roller spring is connected to the inner wall of the detection roller block.

[0007] Further, the adjustment buffer idler includes an adjustment left idler, an adjustment right idler and an adjustment middle idler. The adjustment left idler, the adjustment right idler and the adjustment middle idler have the same structure. The adjustment left idler includes an adjustment main roller body, on which an adjustment roller block is slidably connected. One end of the adjustment roller block located inside the adjustment main roller body is connected with an adjustment roller coil. An adjustment roller shaft is coaxially assembled inside the adjustment main roller body, and an adjustment main magnet is sleeved on the adjustment roller shaft. The adjustment main magnet is radially magnetized. An adjustment roller sliding cover is arranged inside the adjustment main roller body. The adjustment roller block slides along the inner wall of the adjustment roller sliding cover. The adjustment roller coil is located inside the adjustment roller sliding cover.

[0008] Further, a number of detection roller blocks are radially arranged on the detection main roller body, and a number of radially arranged detection roller blocks form a detection roller block unit group. A plurality of detection roller block unit groups are axially arranged on the detection main roller body. A number of adjustment roller blocks are arranged on the adjustment main roller body in the radial direction, and a number of radially arranged adjustment roller blocks form an adjustment roller block unit group. A plurality of adjustment roller block unit groups are axially arranged on the adjustment main roller body.

[0009] Further, the side support rod includes an outer sleeve rod, an inner sleeve rod, a side support electromagnet, a side support magnetic block, and a locking device. The outer sleeve rod is fixedly connected to the conveying support. The inner sleeve rod is slidably connected to the inside of the outer sleeve rod. The side support electromagnet is disposed on the bottom wall inside the outer sleeve rod. The side support magnetic block is connected to the lower end of the inner sleeve rod. The locking device is installed at the top of the outer sleeve rod.

[0010] Further, the controller includes an input module, a power conversion unit, a current comparison unit, a power storage module, an output current adjustment unit, and an output module.

[0011] The input module is electrically connected to the detection roller coil and is used to collect the induced current of the detection roller coil.

[0012] The power conversion unit is used to convert the induced current collected by the input module into direct current and store it in the power storage module.

[0013] The current comparison unit obtains the current after conversion by the power conversion unit and compares the current values of the detection roller coils corresponding to each detection roller block unit group.

[0014] The output current adjustment unit adjusts the current value output to the adjustment roller coil of the corresponding position adjustment roller block unit group according to the comparison result of the current comparison unit.

[0015] The output module outputs the current to the adjustment roller coil and the side support electromagnet according to the current value calculated by the output current adjustment unit and the adjustment roller block unit group at the corresponding position of the current value.

[0016] Further, the current comparison unit includes a side total comparison unit, a side single comparison unit, and a middle single comparison unit.

[0017] The side total comparison unit is used to compare the total sum of the induced currents of all the detection roller coils of two parts, namely, the detection left roller and the left half side of the detection middle roller, and the detection right roller and the right half side of the detection middle roller, formed with the middle line of the detection middle roller as the axis of symmetry.

[0018] The side single comparison unit is used to compare the induced current values of the detection roller coils at the corresponding positions of the detection left roller and the detection right roller with the middle line of the detection middle roller as the axis of symmetry.

[0019] The middle single comparison unit is used to compare the induced current values of the detection roller coils at the corresponding positions on both sides of the detection middle roller with the middle line of the detection middle roller as the axis of symmetry.

[0020] Beneficial effects:

[0021] 1. The present invention detects the evenness of the coal material distribution on the conveyor belt by providing a detection buffer idler and an adjustment buffer idler on the conveying support, and then controls the movement of the adjustment roller block at the corresponding position of the adjustment buffer idler to raise or lower the conveyor belt at the corresponding position, so that the coal material at the corresponding position flows under the action of gravity to the position with less coal material, realizing the even function of the material and solving the problem of conveyor belt deviation from the source.

[0022] 2. The present invention first compares the total amount of materials in the left and right halves of the conveyor belt, then compares the amount of coal material at the local positions on the symmetric sides of the conveyor belt, and finally compares the coal material at the local positions in the middle horizontal part of the conveyor belt, and adjusts the amount of materials at the overall and local positions through the adjustment buffer idler. Through a triple adjustment method and adjusting the material distribution amount in the order of first main and then secondary, the evenness of the coal material distribution on the conveyor belt is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the present invention;

[0024] Figure 2 is a schematic structural diagram of the detection buffer idler of the present invention;

[0025] Figure 3 is a side sectional view of the detection left idler of the present invention;

[0026] Figure 4 is a top sectional view of the detection left idler of the present invention;

[0027] Figure 5 is a side sectional view of the adjustment left idler of the adjustment buffer idler of the present invention;

[0028] Figure 6 is a top sectional view of the adjustment left idler of the adjustment buffer idler of the present invention;

[0029] Figure 7 is a block diagram of the system composition of the controller of the present invention.

[0030] In the figure: 1. Conveyor support; 2. Ordinary buffer idler; 3. Detection buffer idler; 301. Left detection idler; 3011. Detection main roller body; 3012. Detection roller block; 3013. Detection roller magnet block; 3014. Detection roller coil; 3015. Detection roller spring; 3016. Detection roller sliding cover; 3017. Detection idler shaft; 302. Right detection idler; 303. Middle detection idler; 4. Adjustment buffer idler; 4011. Adjustment main roller body; 4012. Adjustment roller block; 4013. Adjustment roller coil; 4014. Adjustment main magnet; 4015. Adjustment roller sliding cover; 4016. Adjustment idler shaft; 5. Controller; 501. Input module; 502. Electric energy conversion unit; 503. Current comparison unit; 5031. Side total comparison unit; 5032. Side single comparison unit; 5033. Middle single comparison unit; 504. Electric energy storage module; 505. Output current adjustment unit; 506. Output module; 6. Side support rod; 601. Outer sleeve rod; 602. Inner sleeve rod; 603. Side support electromagnet; 604. Side support magnet block; 605. Locking device. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figure 1 , a mine coal belt conveyor device, including a conveyor support 1, an ordinary buffer idler 2, a detection buffer idler 3, and an adjustment buffer idler 4 are installed on the conveyor support 1. The detection buffer idler 3 and the adjustment buffer idler 4 are electrically connected to a controller 5. A number of ordinary buffer idlers 2 are arranged between the detection buffer idler 3 and the adjustment buffer idler 4. The distance between the detection buffer idler 3 and the adjustment buffer idler 4 is set according to the speed of the conveyor belt transmission and the duration calculated by the controller 5, ensuring that when the controller 5 detects the coal material distribution on the detection buffer idler 3 until the adjustment buffer idler 4 acts, the coal material detected by the detection buffer idler 3 just moves to the position of the adjustment buffer idler 4. Therefore, the distance between the detection buffer idler 3 and the adjustment buffer idler 4 is fixed and set according to the operating speed of the computer and the operating speed of the conveyor belt; therefore, the number of ordinary buffer idlers 2 between the detection buffer idler 3 and the adjustment buffer idler 4 is not limited and is set according to the actual distance between the detection buffer idler 3 and the adjustment buffer idler 4. Refer to the attached Figure 2, the detection buffer idler 3 includes an intermediate bracket, a left detection idler 301, a right detection idler 302, and a middle detection idler 303. The structures of the left detection idler 301, the right detection idler 302, and the middle detection idler 303 are the same. A conveyor belt is laid on the left detection idler 301, the right detection idler 302, and the middle detection idler 303. Coal is placed on the conveyor belt. The intermediate bracket is fixedly connected to the conveying bracket 1. Side struts 6 are provided on both sides of the conveying bracket 1. The two ends of the middle detection idler 303 are rotatably connected to the intermediate bracket. The two ends of the left detection idler 301 and the right detection idler 302 are respectively connected to the intermediate bracket and the side strut 6.

[0033] Refer to the appendix Figure 2 , the side strut 6 includes an outer sleeve rod 601, an inner sleeve rod 602, a side strut electromagnet 603, a side strut magnet 604, and a locking device 605. The outer sleeve rod 601 is fixedly connected to the conveying bracket 1. The inner sleeve rod 602 is slidably connected inside the outer sleeve rod 601. The side strut electromagnet 603 is provided on the bottom wall inside the outer sleeve rod 601. The side strut magnet 604 is connected to the lower end of the inner sleeve rod 602. The locking device 605 is installed at the top of the outer sleeve rod 601. The locking device 605 is electrically controlled and can use an electromagnetic friction connector. When an electric current is passed into the side strut electromagnet 603, the locking device 605 opens. At this time, the induced magnetic field generated by the side strut electromagnet 603 repels the side strut magnet 604. When the side strut magnet 604 and the inner sleeve rod 602 move and reach an equilibrium state, that is, when the side strut magnet 604 remains stationary, the locking device 605 closes, locking the outer sleeve rod 601 and the inner sleeve rod 602 together to keep them stable. At this time, the current in the side strut electromagnet 603 can be disconnected.

[0034] Refer to the appendix Figure 3 and the appendix Figure 4, the left detection idler 301 includes a detection main roller body 3011. A detection idler shaft 3017 is coaxially assembled inside the detection main roller body 3011. Both ends of the detection idler shaft 3017 extend to the outside of the detection main roller body 3011 and are respectively connected to the intermediate bracket and the inner sleeve rod 602. Therefore, when a larger current than the previous time is passed through the side support electromagnet 603, the induced magnetic field generated by the side support electromagnet 603 is enhanced, and the repulsive force on the side support magnet 604 increases, causing the side support magnet 604 to drive the inner sleeve rod 602 to move upward. Since the detection idler shaft 3017 is connected to the intermediate bracket and remains fixed in height, the detection idler shaft 3017 rotates along the point connected to the intermediate bracket, thereby increasing the angle of the left detection idler 301 relative to the horizontal line. The coal material on the conveyor belt on the surface of the left detection idler 301 slides off from the left detection idler 301 under the action of gravity, thereby reducing the coal material carried by the left detection idler 301; conversely, it can cause the left detection idler 301 to rotate to the left to reduce its angle with the horizontal line, so that the coal material at the right detection middle idler 303 flows to the left detection idler 301, achieving the function of increasing the coal material at the left detection idler 301; A detection roller block 3012 is movably sleeved on the detection main roller body 3011. One end of the detection roller block 3012 located inside the detection main roller body 3011 is connected to a detection roller magnet 3013. A detection roller coil 3014 is arranged on the detection idler shaft 3017. The detection roller magnets 3013 and the detection roller coils 3014 correspond one by one. A detection roller slide cover 3016 is arranged inside the detection main roller body 3011. The detection roller slide cover 3016 is used to shield the magnetic field of the detection roller coils 3014 located inside it to prevent the magnetic fields of multiple detection roller coils 3014 from affecting each other; The detection roller magnets 3013 and the detection roller coils 3014 are located inside the detection roller coils 3014 and the detection roller block 3012 slides along the inner wall of the detection roller slide cover 3016. A detection roller spring 3015 is arranged inside the detection roller slide cover 3016. The lower end of the detection roller spring 3015 is fixed and the upper end of the detection roller spring 3015 is connected to the inner wall of the detection roller block 3012. When the detection roller block 3012 rotates to the uppermost end, it slides into the detection roller slide cover 3016 along the inner wall of the detection roller slide cover 3016 under the extrusion of the coal material on the conveyor belt. Therefore, the detection roller magnet 3013 approaches the detection roller coil 3014. When the detection roller block 3012 moves downward from the uppermost end, it moves outward from the detection roller slide cover 3016 under the elastic force of the detection roller spring 3015, thereby causing the distance between the detection roller magnet 3013 and the detection roller coil 3014 to change intermittently, thereby generating an induced current in the detection roller coil 3014.When the detection roller block 3012 does not rotate to the uppermost position, under the action of the detection roller spring 3015, the position of the detection roller block 3012 relative to the detection main roller body 3011 is a fixed value. When the detection roller block 3012 rotates to the top, the heavier the coal material on the conveyor belt, the greater the extrusion force on the detection roller block 3012, the greater the distance that the detection roller block 3012 moves into the detection roller sliding cover 3016, the greater the change value of the magnetic field affected by the detection roller magnet 3013 in the detection roller coil 3014, and the greater the induced current in the detection roller coil 3014. Therefore, the amount of coal material can be obtained by acquiring the magnitude of the current value in the detection roller coil 3014. By comparing the amount of coal material at symmetrical parts of the conveyor belt, it can be determined whether the coal material distribution is uniform.

[0035] Viewed from the outside, that is, the front view, the adjustment buffer idler 4 is the same as the front view of the detection buffer idler 3, as shown in the appendix Figure 2 shown. The adjustment buffer idler 4 also includes an adjustment left idler, an adjustment right idler, and an adjustment middle idler, which are not shown in the figure but are the same as those in the appendix Figure 2 The structures of the adjustment left idler, the adjustment right idler, and the adjustment middle idler are the same. Of course, both sides of the adjustment left idler and the adjustment middle idler are also respectively connected to a side support rod 6. Refer to the appendix Figure 5 and the appendix Figure 6 The adjustment left idler includes an adjustment main roller body 4011. An adjustment roller block 4012 is slidably connected to the adjustment main roller body 4011. One end of the adjustment roller block 4012 located inside the adjustment main roller body 4011 is connected to an adjustment roller coil 4013. An adjustment roller shaft 4016 is coaxially assembled inside the adjustment main roller body 4011. An adjustment main magnet 4014 is sleeved on the adjustment roller shaft 4016. The adjustment main magnet 4014 is radially magnetized. An adjustment roller sliding cover 4015 is arranged inside the adjustment main roller body 4011. The adjustment roller block 4012 slides along the inner wall of the adjustment roller sliding cover 4015. The adjustment roller coil 4013 is located inside the adjustment roller sliding cover 4015. When a current is passed through the adjustment roller coil 4013, the adjustment roller coil 4013 generates an induced magnetic field. The magnetic field direction of the induced magnetic field is opposite to the magnetic field direction of the adjustment main magnet 4014. Therefore, the adjustment roller coil 4013 is repelled by the adjustment main magnet 4014, causing the adjustment roller coil 4013 to drive the adjustment roller block 4012 to slide outward along the inner wall of the adjustment roller sliding cover 4015. When the adjustment roller block 4012 is at the uppermost position and contacts the conveyor belt, it will push the conveyor belt upward, and the coal material on the conveyor belt will slide to its right side, thereby reducing the coal material at that place.

[0036] Refer to the appendix Figure 2 As shown in the appendix, a plurality of detection roller blocks 3012 are radially arranged on the detection main roller body 3011. The plurality of radially arranged detection roller blocks 3012 form a detection roller block 3012 unit group. A plurality of detection roller block 3012 unit groups are axially arranged on the detection main roller body 3011.

[0037] Similar to the detection roller block 3012, several adjustment roller blocks 4012 are provided for adjusting the main roller body 4011. A plurality of adjustment roller blocks 4012 in the radial direction form an adjustment roller block 4012 unit group, and a plurality of adjustment roller block 4012 unit groups are axially provided on the main roller body 4011 for adjustment.

[0038] Refer to the appendix Figure 7 The controller 5 includes an input module 501, an electric energy conversion unit 502, a current comparison unit 503, an electric energy storage module 504, an output current adjustment unit 505, and an output module 506;

[0039] The input module 501 is electrically connected to the detection roller coil 3014 and is used to collect the induced current of the detection roller coil 3014.

[0040] The electric energy conversion unit 502 is used to convert the induced current collected by the input module 501 into direct current and store it in the electric energy storage module 504.

[0041] The current comparison unit 503 obtains the current after conversion by the electric energy conversion unit 502 and compares the current values of the detection roller coils 3014 corresponding to each detection roller block 3012 unit group.

[0042] The current comparison unit 503 includes a side total comparison unit 5031, a side single comparison unit 5032, and a middle single comparison unit 5033;

[0043] The side total comparison unit 5031 is used to compare the total induced current of all the detection roller coils 3014 in two parts: the detection left roller 301 and the left half of the detection middle roller 303, and the detection right roller 302 and the right half of the detection middle roller 303, which are formed with the middle line of the detection middle roller 303 as the axis of symmetry; the position of the middle line of the detection middle roller 303 is at the appendix Figure 2 The position in the middle of the detection middle roller 303 and indicated by the arrows opposite above and below.

[0044] The side single comparison unit 5032 is used to compare the induced current values of the detection roller coils 3014 at the corresponding positions of the detection left roller 301 and the detection right roller 302 with the middle line of the detection middle roller 303 as the axis of symmetry; appendix Figure 2 Compare the current values of the detection roller coils 3014 provided at the detection roller blocks 3012 on the detection left roller 301 and the detection right roller 302 indicated by the arrows above the detection left roller 301 and the detection right roller 302, and compare the detection roller coils 3014 at each detection roller block 3012 along the detection left roller 301 downward in turn with the detection roller coils 3014 at the corresponding positions of the detection roller blocks 3012 on the detection right roller 302;

[0045] The middle comparison unit 5033 is used to compare and detect the induced current values of the detection roller coils 3014 at the corresponding positions on both sides of the detection idler 303 with the middle line of the middle idler 303 as the axis of symmetry; that is, attach Figure 2 Compare with the detection roller coil 3014 provided at the detection idler 303 at the position indicated by the connected arrow above the middle detection idler 303;

[0046] The output current adjustment unit 505 adjusts the current value in the adjustment roller coil 4013 output to the adjustment roller block 4012 unit group at the corresponding position according to the comparison result of the current comparison unit 503;

[0047] The output module 506 outputs the current to the adjustment roller coil 4013 and the side support electromagnet 603 according to the current value calculated by the output current adjustment unit 505 and the adjustment roller block 4012 unit group at the corresponding position of the current value.

[0048] The comparison results of the above current comparison unit 503 include:

[0049] If the comparison result of the side total comparison unit 5031 is that the total current values of the left and right halves are not equal, then corresponding to the three adjustment idlers of the adjustment buffer idler 4, the adjustment idler on the side with the larger total current value is lifted under the action of the side support rod 6, and the adjustment idler on the side with the smaller total current value is lowered under the action of the side support rod 6, so as to balance the coal material amounts of the left and right halves; then it is detected again by the next detection buffer idler 3 and adjusted again by the next adjustment buffer idler 4.

[0050] If the comparison result of the side total comparison unit 5031 is that the total current values of the left and right halves are equal, it means that the coal material weights borne by the two halves with the middle line of the detection idler 303 as the axis of symmetry are equal; start the side single comparison unit 5032 for comparison, refer to attach Figure 2, assume that on the left idler 301, from left to right are Left 1, Left 2, Left 3, Left 4, and Left 5; on the right idler 302, from right to left are Right 1, Right 2, Right 3, Right 4, and Right 5; on the middle idler 303, from left to right are Middle 1, Middle 2, Middle 3, Middle 4, and Middle 5. First, obtain the current values of the detection roller coils 3014 in all the detection roller block 3012 unit groups on the left idler 301, and calculate the average current on the left idler 301. Similarly, obtain the average current on the right idler 302. Taking the one with the smaller average current as the reference, assume that the average current of the right idler 302 is smaller than that of the left idler 301, which means that the overall coal material quantity on the right idler 302 is less than that on the left idler 301. More coal material on the left idler 301 is located in the left half of the middle idler 303. Therefore, compare Left 1 with Right 1. If they are equal, then compare Left 2 with Right 2. If Left 1 is greater than Right 1, correspondingly, inside the buffer idler 4, increase the current value of the adjustment roller coil 4013 at Left 1 of the left idler, so that the adjustment roller block 4012 at Left 1 is lifted, and the coal material at Left 1 flows towards Left 2. If Left 1 is less than Right 1, correspondingly, inside the buffer idler 4, decrease the current value of the adjustment roller coil 4013 at Left 1 of the left idler, increase the current value of the adjustment roller coil 4013 at Left 2 of the left idler, and the adjustment roller block 4012 at Left 2 will deflect the coal material towards the adjustment roller block 4012 at Left 1. Compare the current values of the detection roller coils 3014 at the subsequent detection roller block 3012 positions in accordance with the above comparison method, and correspondingly adjust the current value of the adjustment roller coil 4013 of the buffer idler 4.

[0051] The start of the middle comparison unit 5033 is also under the premise that the comparison results of the side total comparison unit 5031 are equal. Compare Middle 1 with Middle 5. If Middle 1 and Middle 5 are equal, then compare Middle 2 with Middle 4. If Middle 1 is greater than Middle 5, correspondingly, increase the current value of the adjustment roller coil 4013 on the inner wall of the adjustment roller block 4012 corresponding to Middle 1 of the middle idler of the buffer idler 4, so that the adjustment roller block 4012 at Middle 1 is lifted, and the coal material flows towards Middle 2, Middle 3, Middle 4, and Middle 5. Conversely, if Middle 1 is less than Middle 5, correspondingly, decrease the current value of the adjustment roller coil 4013 on the inner wall of the adjustment roller block 4012 corresponding to Middle 5 of the middle idler of the buffer idler 4. Then compare Middle 2 with Middle 4 in sequence, and adjust the middle idler of the buffer idler 4 in the above manner.

[0052] Since the detection left idler 301 and the detection right idler 302 are relatively far from the center point of the conveyor belt, when the coal material distribution at symmetrical positions on the detection left idler 301 and the detection right idler 302 is uneven, it is more likely to cause the conveyor belt to deviate. Therefore, in this application, the overall material quantity of the left and right parts is first compared. Even if the material is unevenly distributed locally, but the total quantity is equal, the conveyor belt deviates at a slower speed. Then, the symmetrical positions on the detection left idler 301 and the detection right idler 302 are compared to reduce the unevenness of the material at the positions far from the center of the conveyor belt, thereby greatly reducing the probability of the conveyor belt deviating. Then, the coal material at the relatively flat positions on both sides of the detection middle idler 303 close to the center of the conveyor belt is compared. Since this position is close to the center of the conveyor belt, the influence of uneven coal material distribution on deviation is lower than the above two cases. According to the above method of giving priority to the main and then the secondary, the situation of the conveyor belt deviating can be greatly reduced.

Claims

1. A belt conveyor device for mine coal, comprising a conveying support (1), characterized in that: A general buffer idler (2), a detection buffer idler (3) and an adjustment buffer idler (4) are installed on the conveying support (1). The detection buffer idler (3) and the adjustment buffer idler (4) are electrically connected to a controller (5). A plurality of general buffer idlers (2) are arranged between the detection buffer idler (3) and the adjustment buffer idler (4). The detection buffer idler (3) includes an intermediate support, a detection left idler (301), a detection right idler (302) and a detection middle idler (303). The intermediate support is fixedly connected to the conveying support (1). Side struts (6) are arranged on both sides of the conveying support (1). The two ends of the detection middle idler (303) are rotatably connected to the intermediate support. The two ends of the detection left idler (301) and the detection right idler (302) are respectively connected to the intermediate support and the side strut (6); The detection left idler (301), the detection right idler (302) and the detection middle idler (303) have the same structure. The detection left idler (301) includes a detection main roller body (3011). A detection roller block (3012) is movably sleeved on the detection main roller body (3011). One end of the detection roller block (3012) located inside the detection main roller body (3011) is connected to a detection roller magnet block (3013). A detection roller shaft (3017) is coaxially assembled inside the detection main roller body (3011). A detection roller coil (3014) is arranged on the detection roller shaft (3017). The detection roller magnet blocks (3013) and the detection roller coils (3014) are in one-to-one correspondence. A detection roller sliding cover (3016) is arranged inside the detection main roller body (3011). The detection roller magnet blocks (3013) and the detection roller coils (3014) are located inside the detection roller sliding cover (3016) and the detection roller block (3012) slides along the inner wall of the detection roller sliding cover (3016). A detection roller spring (3015) is arranged inside the detection roller sliding cover (3016). The lower end of the detection roller spring (3015) is fixed and the upper end of the detection roller spring (3015) is connected to the inner wall of the detection roller block (3012).

2. The belt conveyor device for mine coal according to claim 1, characterized in that: The adjustment buffer idler (4) includes an adjustment left idler, an adjustment right idler, and an adjustment middle idler. The adjustment left idler, adjustment right idler, and adjustment middle idler have the same structure. The adjustment left idler includes an adjustment main roller body (4011), on which an adjustment roller block (4012) is slidably connected. One end of the adjustment roller block (4012) located inside the adjustment main roller body (4011) is connected to an adjustment roller coil (4013). An adjustment idler shaft (4016) is coaxially assembled inside the adjustment main roller body (4011). An adjustment main magnet (4014) is sleeved on the adjustment idler shaft (4016). The adjustment main magnet (4014) is radially magnetized. An adjustment roller sliding cover (4015) is arranged inside the adjustment main roller body (4011). The adjustment roller block (4012) slides along the inner wall of the adjustment roller sliding cover (4015). The adjustment roller coil (4013) is located inside the adjustment roller sliding cover (4015).

3. The mine coal belt conveyor device according to claim 2, characterized in that: A number of detection roller blocks (3012) are radially arranged on the detection main roller body (3011). A number of radially arranged detection roller blocks (3012) form a detection roller block (3012) unit group. A plurality of detection roller block (3012) unit groups are axially arranged on the detection main roller body (3011). A number of adjustment roller blocks (4012) are arranged on the adjustment main roller body (4011). A number of radially arranged adjustment roller blocks (4012) form an adjustment roller block (4012) unit group. A plurality of adjustment roller block (4012) unit groups are axially arranged on the adjustment main roller body (4011).

4. The mine coal belt conveyor device according to claim 1, characterized in that: The side support rod (6) includes an outer sleeve rod (601), an inner sleeve rod (602), a side support electromagnet (603), a side support magnetic block (604), and a locking device (605). The outer sleeve rod (601) is fixedly connected to the conveying support (1). The inner sleeve rod (602) is slidably connected inside the outer sleeve rod (601). The side support electromagnet (603) is arranged on the bottom wall inside the outer sleeve rod (601). The side support magnetic block (604) is connected to the lower end of the inner sleeve rod (602). The locking device (605) is installed at the top of the outer sleeve rod (601).

5. The mine coal belt conveyor device according to claim 3, characterized in that: The controller (5) includes an input module (501), a power conversion unit (502), a current comparison unit (503), a power storage module (504), an output current adjustment unit (505), and an output module (506); The input module (501) is electrically connected to the detection roller coil (3014) and is used to collect the induced current of the detection roller coil (3014); The power conversion unit (502) is used to convert the induced current collected by the input module (501) into direct current and store it in the power storage module (504); The current comparison unit (503) obtains the current converted by the electric energy conversion unit (502), and compares the current values of the detection roller coils (3014) corresponding to each detection roller block (3012) unit group; The output current adjustment unit (505) adjusts the current value output to the adjustment roller coil (4013) of the corresponding position adjustment roller block (4012) unit group according to the comparison result of the current comparison unit (503); The output module (506) outputs the current to the adjustment roller coil (4013) and the side support electromagnet (603) according to the current value calculated by the output current adjustment unit (505) and the adjustment roller block (4012) unit group at the position corresponding to the current value.

6. A mine coal belt conveyor device according to claim 5, characterized in that: The current comparison unit (503) includes a side total comparison unit (5031), a side single comparison unit (5032) and a middle single comparison unit (5033); The side total comparison unit (5031) is used to compare the total sum of the induced currents of all the detection roller coils (3014) of two parts, namely the detection left roller (301) and the left half of the detection middle roller (303) formed with the middle line of the detection middle roller (303) as the symmetry axis, and the detection right roller (302) and the right half of the detection middle roller (303); The side single comparison unit (5032) is used to compare the induced current values of the detection roller coils (3014) at the corresponding positions of the detection left roller (301) and the detection right roller (302) with the middle line of the detection middle roller (303) as the symmetry axis; The middle single comparison unit (5033) is used to compare the induced current values of the detection roller coils (3014) at the corresponding positions on both sides of the detection middle roller (303) with the middle line of the detection middle roller (303) as the symmetry axis.

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