Intelligent adjustment system and method for fully mechanized mining working face

Abstract

The present invention provides an intelligent adjustment system for a fully mechanized mining face, comprising a distance measuring sensor, a travel encoder, a permanent magnet, an oblique cutting electromagnet and an angle adjustment electromagnet. The present invention also provides a fully mechanized mining face adjustment method, which is applied to the system. The present invention adjusts the advancement progress of the head or tail of the fully mechanized mining face, that is, intelligently changes the advancement direction of the fully mechanized mining face, and in the process of adjusting the advancement direction of the fully mechanized mining face, causes the head of the scraper conveyor to move out and indent after multiple pushes, thereby eliminating the retraction and advancement of the scraper conveyor head caused by other factors such as the slope and advancement direction of the fully mechanized mining face, so as to achieve a stable overlap length between the scraper conveyor head and the transfer machine within the set threshold range for smooth coal flow, thereby ensuring the continuous and normal production of the fully mechanized mining face.

Description

Technical Field

[0001] The present invention relates to the field of coal mining technology, and in particular to an intelligent adjustment system and method for a fully mechanized mining working face. Background Art

[0002] Due to the continuous movement of the earth's crust, coal seams are rarely horizontal, but mostly inclined, which is called coal seam inclination in the industry. It represents the full inclination of a coal seam or the angle formed by a line of the inclination and the horizontal plane. In actual mining, the transport and return tunnels connected to the working face are fixed spaces. Due to the existence of the coal seam inclination, the scraper conveyor (chute) is prone to deviation in the process of following the fully mechanized mining face, that is, it shrinks or jumps out relative to the transfer machine, resulting in an unreasonable overlap between the scraper conveyor and the transfer machine. The transport and return space of the fully mechanized mining face is fixed. Under its restriction, the shrinkage and jump of the scraper conveyor will cause the scraper conveyor to transport coal poorly, and even cause the return coal, coal pile and the hydraulic support of the fully mechanized mining face to be squeezed, bitten or even overturned, causing production to be not smooth, stagnant and even affecting production safety.

[0003] Another reason for the scraper conveyor to retract or extend relative to the loader is the non-perpendicularity between the fully-mechanized mining face and the transport chute. This means that during construction, the fully-mechanized mining face, located at the head of the scraper conveyor, may lead or lag behind the tail of the scraper conveyor. Balancing the effects of these two factors on the scraper conveyor is a pressing issue for the industry. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the first purpose of the present invention is to provide an intelligent adjustment system for a comprehensive mining working face, which can monitor the length of the scraper conveyor head protruding or retracting into the transfer machine in real time, and adjust the coal mining machine operation mode according to this length data, and timely adjust the propulsion direction of the comprehensive mining working face, so that the scraper conveyor head protrudes or retracts during the propulsion direction adjustment process, which is used to balance the protrusion or retraction of the scraper conveyor head caused by slope and other reasons.

[0005] The second purpose of the present invention is to provide a method for adjusting the comprehensive mining working face, which adjusts the propulsion direction of the comprehensive mining working face based on the length data of the scraper conveyor head extending or retracting into the transfer machine, in conjunction with the oblique cutting electromagnet and the angle adjustment electromagnet, thereby balancing the extending or retracting length of the head, and keeping the overlap length between the scraper conveyor and the transfer machine stable or returning it to the overlap length setting threshold range that can smoothly transport the coal flow.

[0006] The embodiments of the present invention are achieved through the following technical solutions:

[0007] An intelligent adjustment system for a fully mechanized mining face comprises: a distance measuring sensor, arranged on the head of a scraper conveyor, for monitoring the length of the scraper conveyor head retracted or extended out of a transfer machine; a travel encoder, arranged on a coal mining machine, for measuring the traveling position of the coal mining machine; a permanent magnet, one each on the head side and the tail side of the scraper conveyor, which resets the coal mining machine travel encoder to zero through a magnetic signal, for controlling the coal mining machine traction not to exceed the cutting range, swapping the upper and lower positions of the two rollers, and changing the traction and cutting direction; an oblique cutting feed electromagnet, one each on the head side and the tail side of the scraper conveyor; and a plurality of angle adjustment electromagnets, evenly spaced between the two oblique cutting feed electromagnets; the permanent magnet, the oblique cutting feed electromagnet and the plurality of angle adjustment electromagnets are arranged in sequence and are all used to cooperate with the travel encoder, and the oblique cutting feed electromagnet and the angle adjustment electromagnet cooperate with the travel encoder to adjust the propulsion direction of the coal mining machine relative to the fully mechanized mining face.

[0008] A method for adjusting a fully mechanized mining working face comprises the following steps:

[0009] S1, a permanent magnet, an oblique cutting electromagnet, a first angle adjustment electromagnet and a second angle adjustment electromagnet are sequentially arranged in a manner extending from both ends of the fully mechanized mining working face to the middle thereof, wherein:

[0010] One second angle adjustment electromagnet is distributed in the middle of the fully mechanized mining working face, the two permanent magnets are symmetrically distributed about the second angle adjustment electromagnet, the two bevel feed electromagnets are symmetrically distributed about the second angle adjustment electromagnet, and the two first angle adjustment electromagnets are symmetrically distributed about the second angle adjustment electromagnet; the permanent magnet, the bevel feed electromagnet, the first angle adjustment electromagnet, and the second angle adjustment electromagnet are all arranged in the connecting plate of the coal baffle of the scraper conveyor;

[0011] S2, the distance measuring sensor monitors the length of the scraper conveyor head retracting or extending out of the transfer machine and transmits the length data to the processor;

[0012] S3, the processor selects to power on or off the oblique cutting feed electromagnet, the first angle adjustment electromagnet and the second angle adjustment electromagnet arranged on the scraper conveyor through the length data to cooperate with the travel encoder installed on the coal mining machine, so that the coal mining machine can adjust its propulsion direction relative to the comprehensive mining working face at the corresponding oblique cutting feed electromagnet, the first angle adjustment electromagnet and the second angle adjustment electromagnet.

[0013] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects:

[0014] The present invention adjusts the advancement progress of the head or tail of the comprehensive mining working face by intelligently adjusting the operation mode of the coal mining machine, that is, intelligently changes the advancement direction of the comprehensive mining working face, and in the process of adjusting the advancement direction of the comprehensive mining working face, causes the scraper conveyor to move its head out and indent after multiple pushes, thereby eliminating the retraction and advancement of the scraper conveyor head caused by other factors such as the slope and advancement direction of the comprehensive mining working face, so as to achieve the stability of the overlap length between the scraper conveyor head and the transfer machine within the set range of smooth coal flow transportation, thereby ensuring the continuous and normal production of the comprehensive mining working face. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic top view of the structure of the scraper conveyor provided in Example 1 of the present invention;

[0016] Figure 2 An operation diagram of a coal mining machine during adjustment of a fully mechanized mining working face provided in Example 2 of the present invention;

[0017] Figure 3 This is an operation diagram of a coal mining machine during adjustment of a fully mechanized mining working face in a head retracted state provided by Example 3 of the present invention;

[0018] Figure 4 This is an operation diagram of a coal mining machine during adjustment of a fully mechanized mining working face in a machine head-out state provided in Example 3 of the present invention;

[0019] Figure 5 This is an operation diagram of a coal mining machine during adjustment of a fully mechanized mining working face in a head retracted state provided by Example 4 of the present invention;

[0020] Figure 6 This is an operation diagram of the coal mining machine during the adjustment of the fully mechanized mining working face in the machine head protruding state provided in Example 4 of the present invention. DETAILED DESCRIPTION

[0021] Example 1

[0022] Please refer to Figure 1, an intelligent adjustment system for a fully mechanized mining working face, comprising: a distance measuring sensor, arranged on the head of a scraper conveyor, for monitoring the length of the scraper conveyor head retracting or extending out of a transfer machine; a stroke encoder, arranged on a coal mining machine, for measuring the traveling position of the coal mining machine; a permanent magnet, one each on the head side and the tail side of the scraper conveyor, which resets the stroke encoder of the coal mining machine to zero through a magnetic signal, for controlling the traction of the coal mining machine not to exceed the cutting range, the swapping of the upper and lower positions of the two rollers, and the change of the traction and cutting direction; an oblique cutting electromagnet, one each on the head side and the tail side of the scraper conveyor; and a plurality of angle adjustment electromagnets, evenly spaced between the two oblique cutting electromagnets; the permanent magnet, the oblique cutting electromagnet and the plurality of angle adjustment electromagnets are arranged in sequence and are all used to cooperate with the stroke encoder, and the oblique cutting electromagnet and the angle adjustment electromagnet cooperate with the stroke encoder to adjust the propulsion direction of the coal mining machine relative to the fully mechanized mining working face. In this embodiment, when the working surface is longer, the number of evenly arranged angle adjustment electromagnets will be increased, and the width of the hydraulic support will be spaced at 25-35 groups. The processor is also included, which is electrically connected to the distance measuring sensor, the stroke encoder, the floating coal cleaning electromagnet, the stroke sensor of the hydraulic support push jack, the bevel cutting electromagnet, and the angle adjustment electromagnet.

[0023] It should be noted that the overlap length between the scraper conveyor head and the transfer machine is the optimal value when the scraper conveyor runs at high speed and the coal flow it transports is thrown to the center of the transfer machine by the scraper conveyor head. The deviation of the overlap length from its optimal value under actual working conditions is the length of the scraper conveyor head that retracts or jumps out of the transfer machine.

[0024] In this embodiment, a distance measuring sensor monitors the length of the scraper conveyor head retracting or extending beyond the transfer machine in real time to determine whether it deviates from the optimal value. When the deviation exceeds a set threshold, processing is required. The present invention adjusts the advancement progress of the head or tail of the fully-mechanized mining face, that is, intelligently changes the advancement direction of the fully-mechanized mining face. During the process of adjusting the advancement direction of the fully-mechanized mining face, the scraper conveyor is caused to extend and retract its head through multiple advancements. This eliminates the amount of retraction and extension of the scraper conveyor head caused by other factors such as the slope and advancement direction of the fully-mechanized mining face, thereby ensuring that the overlap length between the scraper conveyor head and the transfer machine is stable within a set range for smooth coal flow, thereby ensuring the continuous and normal operation of the fully-mechanized mining face production. For example, when the scraper conveyor head retracts and its retraction length exceeds a threshold, the tail end of the fully-mechanized mining face is cut multiple times, and the head end of the fully-mechanized mining face is cut less than the tail end, resulting in the tail end of the fully-mechanized mining face leading the head end. During this process, the change in the direction of advancement of the fully mechanized mining face causes the scraper conveyor to shift toward the head. After the scraper conveyor's tail advances ahead of the head a limited number of times, the accumulated distance it moves toward the head offsets the initial head retraction, thereby eliminating the scraper conveyor head retraction. This stabilizes the overlap length between the scraper conveyor head and the transfer machine within the set range for smooth coal flow.

[0025] Specifically, the distance measuring sensor monitors the length of the scraper conveyor head retracting or extending out of the transfer machine in real time and sends the length data to compare with the threshold stored in the processor. If it does not exceed the threshold range, the normal two-way coal cutting regular cycle production method is followed;

[0026] If the threshold is exceeded:

[0027] Under one operating condition of this embodiment, the distance by which the nose of the aircraft leads or lags behind the tail of the aircraft can be calculated by the following method:

[0028] (1) Assume that the fully mechanized mining face (opening the cutting eye) is inclined to form an angle α (pseudo-inclined angle) with the vertical line of the return air lane. If there is no slippage, the conveyor will rise 600sinα (mm), where 600 is the cycle progress.

[0029] (2) According to actual measurements, when α = 0, the length of the scraper conveyor that extends out during each cycle is A = 36 mm.

[0030] (3) If the transport plane is to not slide down, then 600sinα=36mm, that is, α=3°26′.

[0031] Therefore, the distance that the nose of the aircraft leads or lags behind the tail of the aircraft is X, then: X = Msinα;

[0032] Where: M-working face length (153.6m). Solution: X = 9.22m;

[0033] In practice, the working surface is tilted so that the nose of the machine is 10m ahead of the tail of the machine.

[0034] During the shearer's cutting cycle, the measured length of the scraper conveyor head retracting into or out of the shearer is applied to the above method to calculate the pseudo-bevel angle α of the fully-mechanized mining face that balances this retraction or outward movement. Based on this pseudo-bevel angle, the distance X by which the head of the shearer leads or lags behind the tail of the shearer is calculated. This distance is then evenly divided within a single cycle of the shearer. The pseudo-bevel angle of the fully-mechanized mining face is formed by performing multiple or fewer cuts at the head or tail end of the shearer.

[0035] In this embodiment, by turning on and off the power to the oblique cutting electromagnet and the angle adjustment electromagnet installed on the scraper conveyor, the coal mining machine is made to cut obliquely and turn back when passing the oblique cutting electromagnet and the angle adjustment electromagnet during the stroke through the travel encoder and the processor, thereby realizing multi-cutting at one end of the comprehensive mining working face, so that this end is ahead of the other end.

[0036] In other embodiments, multiple angle adjustment electromagnets may be arranged according to actual adjustment needs.

[0037] The permanent magnet at the end of the fully mechanized mining face cooperates with the processor and the travel encoder on the coal mining machine so that the coal mining machine can just cut through the top and bottom coal walls at the end, swap the positions of the two rollers, and pull in the opposite direction.

[0038] In this embodiment, the permanent magnet, the oblique cutting electromagnet and the angle adjustment electromagnet are all arranged in the connecting plate of the coal retaining plate of the scraper conveyor.

[0039] It should be noted that in this embodiment, the oblique cutting electromagnet and the angle adjustment electromagnet work in the same way, and both can reset the travel encoder on the coal mining machine to zero under power-on conditions and reversely pull the two rollers after the coal mining machine oblique cutting. This discussion also applies to the contents of Examples 2 to 4 below. In the accompanying drawings, since the oblique cutting electromagnet and the angle adjustment electromagnet have the same function, the same icon (downward hollow arrow) is used to illustrate them. Among them, the oblique cutting electromagnet is set closest to the head and tail end of the scraper conveyor, and the rest are angle adjustment electromagnets. In practice, a number of angle adjustment electromagnets can be set along the axial direction of the scraper conveyor according to adjustment needs.

[0040] Example 2

[0041] Please refer to Figure 2 A method for adjusting a fully mechanized mining face comprises the following steps:

[0042] S1, a permanent magnet, an oblique cutting electromagnet, a first angle adjustment electromagnet and a second angle adjustment electromagnet are sequentially arranged in a manner extending from both ends of the fully mechanized mining working face to the middle thereof, wherein:

[0043] A second angle adjustment electromagnet is distributed in the middle of the fully mechanized mining working face, two permanent magnets are symmetrically distributed about the second angle adjustment electromagnet, two oblique cutting electromagnets are symmetrically distributed about the second angle adjustment electromagnet, and two first angle adjustment electromagnets are symmetrically distributed about the second angle adjustment electromagnet; the permanent magnet, oblique cutting electromagnet, first angle adjustment electromagnet and second angle adjustment electromagnet are all arranged in the connecting plate of the scraper conveyor coal baffle;

[0044] S2, the distance measuring sensor monitors the length of the scraper conveyor head retracting or extending out of the transfer machine and transmits the length data to the processor;

[0045] S3, the processor selects to power on or off the oblique cutting feed electromagnet, the first angle adjustment electromagnet and the second angle adjustment electromagnet arranged on the scraper conveyor through the length data to cooperate with the travel encoder installed on the coal mining machine, so that the coal mining machine can adjust its propulsion direction relative to the comprehensive mining working face at the corresponding oblique cutting feed electromagnet, the first angle adjustment electromagnet and the second angle adjustment electromagnet.

[0046] like Figure 2 As shown, further, the width of the transfer machine is defined as L, the permanent magnet close to the transfer machine is the head magnet, and the permanent magnet far from the transfer machine is the tail magnet; when the length of the scraper conveyor head retracting into or out of the transfer machine is less than L / 8, and the coal mining machine cuts from the tail of the scraper conveyor to the head of the scraper conveyor, S3 includes the following steps:

[0047] S31: After the shearer cuts through the tail end of the fully mechanized mining face, the tail magnet resets the travel encoder to zero, the shearer stops pulling, and the hydraulic support and scraper conveyor are pushed toward the coal wall of the fully mechanized mining face in a manner extending from the head to the tail of the scraper conveyor until they stop near the oblique cutting electromagnet distributed at the tail end of the scraper conveyor.

[0048] During the process, the coal mining machine is installed at the tail permanent magnet corresponding to the 135# hydraulic support. The stroke encoder of the coal mining machine stops pulling and the position of the top and bottom knives of the two rollers are swapped. Then the coal mining machine is pulled toward the head of the machine to cut the bottom coal of the body section of the coal mining machine and clean the floating coal in front of the scraper conveyor transition chute. Whether the floating coal is cleaned is monitored and photographed by the camera installed on the top beam of the hydraulic support at the tail end of the machine, and compared with the picture of the transition chute shovel plate with the floating coal cleaned. If the picture comparison is inconsistent, the floating coal cleaning electromagnet is energized. When the coal mining machine is pulled toward the head of the machine to the floating coal cleaning electromagnet, the stroke encoder is reset to zero, the upper and lower positions of the two rollers of the coal mining machine are swapped and pulled toward the tail of the machine, and the tail end of the machine of the comprehensive mining working face is "cut through" again. At this time, under the action of the tail magnet of the machine, the two rollers of the coal mining machine are swapped in position and pulled in the opposite direction, that is, pulled toward the head of the machine, and at the same time, the floating coal in front of the transition chute of the scraper conveyor is cleaned again. This step may be repeated several times until the picture of the transition chute coal shovel plate taken by the camera is consistent with the picture of the transition chute coal shovel plate after the floating coal is cleaned. The floating coal cleaning electromagnet is powered off, and the coal mining machine continues to pull toward the head of the machine to cut coal.

[0049] S32: After the two rollers of the coal shearer are swapped up and down, they are pulled toward the head of the scraper conveyor until they stop at the 10th hydraulic support of the oblique cutting electromagnet distributed near the tail of the scraper conveyor. The coal shearer then obliquely cuts the coal wall of the fully mechanized mining face from this position until it stops at the oblique cutting electromagnet distributed near the tail of the scraper conveyor, and the travel encoder is reset to zero. The two rollers of the coal shearer are swapped up and down, and then the hydraulic support and the scraper conveyor at the tail of the scraper conveyor, located near the oblique cutting electromagnet, move toward the fully mechanized mining face.

[0050] S33: The shearer is pulled toward the tail end of the fully mechanized mining face. After the tail magnet resets the stroke encoder to zero, the shearer stops pulling, and the two rollers of the shearer are swapped up and down, the shearer is pulled toward the head of the scraper conveyor to the oblique cutting electromagnet distributed near the tail end of the scraper conveyor. At this time, the oblique cutting electromagnet, the first angle adjustment electromagnet, and the second angle adjustment electromagnet are all powered off, and the shearer is pulled to the head end of the scraper conveyor. The hydraulic support and the scraper conveyor are both pushed toward the coal wall of the fully mechanized mining face in a manner extending from the tail end of the scraper conveyor toward the head end until they stop at the oblique cutting electromagnet distributed near the head end of the scraper conveyor.

[0051] S34: After the shearer cuts through the head end of the fully mechanized mining face, the head magnet resets the travel encoder to zero, the shearer stops pulling, and the hydraulic support and scraper conveyor move toward the fully mechanized mining face in sequence, extending from the tail end of the scraper conveyor toward the head end, until they stop near the oblique cutting electromagnet distributed at the head end of the scraper conveyor.

[0052] S35: After the two rollers of the coal shearer are swapped up and down, they are pulled toward the tail of the scraper conveyor until they stop at the 10th hydraulic support of the oblique cutting electromagnet distributed near the head of the scraper conveyor. The coal shearer then obliquely cuts the coal wall of the fully mechanized mining face from this position until it stops at the oblique cutting electromagnet distributed near the head of the scraper conveyor, and the travel encoder is reset to zero. The two rollers of the coal shearer are swapped up and down, and then the hydraulic supports and the scraper conveyor from the oblique cutting electromagnet distributed near the head of the scraper conveyor to the head of the scraper conveyor are all moved toward the fully mechanized mining face.

[0053] S36: The shearer is pulled toward the head end of the fully mechanized mining face. The head magnet resets the travel encoder to zero, the shearer stops pulling, and the two rollers of the shearer are swapped up and down. The shearer is then pulled toward the tail end of the scraper conveyor to the oblique cutting electromagnet located near the head end of the scraper conveyor. At this time, the oblique cutting electromagnet, the first angle adjustment electromagnet, and the second angle adjustment electromagnet are all powered off, and the shearer is pulled to the tail end of the scraper conveyor. The hydraulic support and the scraper conveyor are both pushed toward the coal wall of the fully mechanized mining face in a manner extending from the head end to the tail end of the scraper conveyor until they stop at the oblique cutting electromagnet located near the tail end of the scraper conveyor.

[0054] S37, loop steps S31, S32, S33, S34, S35 and S36.

[0055] During this process, the shearer completes the oblique cutting through the transition section of the hydraulic support 130#-120# scraper conveyor. The hydraulic support and the machine are moved into a straight line from 130# to the tail of the machine, and the scraper conveyor is pushed into a straight line from 120# to the tail of the machine. Then the oblique cutting electromagnet set on the 120# hydraulic support is energized, and the stroke encoder configured on the shearer is reset to zero. The shearer stops pulling and the positions of its two roller top and bottom knives are swapped, and then it is pulled toward the tail of the machine to cut the triangular coal from the 120# hydraulic support to the tail of the machine until the tail of the machine is cut through for the second time. At this time, the shearer is affected by the tail magnet set at the 135# hydraulic support, and the stroke encoder configured on the shearer is reset to zero. The coal mining machine stops pulling, and the positions of the top and bottom cutters of the two rollers of the coal mining machine are swapped. The coal mining machine is pulled toward the head of the machine to cut the bottom coal of the body section of the coal mining machine, and the floating coal in front of the scraper conveyor transition chute must also be cleaned. Whether the floating coal there is cleaned or not is monitored by the camera installed on the top beam of the hydraulic support at the tail end of the machine, which takes a picture of the transition chute shovel plate, and compares it with the picture of the transition chute shovel plate with the floating coal cleaned. If the pictures are inconsistent, the floating coal cleaning electromagnet is energized. When the coal mining machine is pulled toward the head of the machine to the floating coal cleaning electromagnet, the stroke encoder returns to zero, the positions of the top and bottom cutters of the two rollers of the coal mining machine are swapped and pulled toward the tail of the machine, and the tail end of the machine of the comprehensive mining working face is "cut through" again. At this time, under the action of the magnet at the tail of the machine, the top and bottom cutters of the two rollers of the coal shearer are swapped and pulled in the opposite direction, that is, pulled toward the head of the machine, and at the same time, the floating coal in front of the transition trough of the scraper conveyor is cleaned again. This step may be repeated several times until the picture of the transition trough coal shovel plate taken by the camera is consistent with the picture of the transition trough coal shovel plate after the floating coal is cleaned. The floating coal cleaning electromagnet is powered off, and the coal shearer continues to pull toward the head of the machine to cut coal to the 120# hydraulic support. The hydraulic support follows the machine and moves from the tail of the machine to the head of the machine to 120#. The scraper conveyor is pushed into place from the tail of the machine to the 130# hydraulic support section. The section from 130#-120# hydraulic support is the transition section of the scraper conveyor. The coal shearer continues to pull toward the head of the machine to cut coal until the head end of the first fully mechanized mining working face is cut through.

[0056] In this embodiment, a regular cycle production method of bidirectional coal cutting is adopted. After the first pass of the fully mechanized mining face head end is cut through, the subsequent cutting steps are the same as the cutting steps of the fully mechanized mining face tail end, which will not be described in detail here. Figure 2 As shown, the head magnet is distributed close to the 5# hydraulic support, the corresponding tail magnet is distributed close to the 135# hydraulic support, the 10# hydraulic support corresponds to the 130# hydraulic support, the 20# hydraulic support corresponds to the 120# hydraulic support, and the 30# hydraulic support corresponds to the 110# hydraulic support.

[0057] At this point, the regular cycle production mode of two-way coal cutting with the overlap length deviation between the scraper conveyor and the transfer machine less than L / 8 is completed, and the above steps are repeated for continuous production.

[0058] Example 3

[0059] This embodiment is a production method of an irregular cycle of 2 passes at the tail and 1 pass at the head, and the contents repeated in Example 2 will not be repeated here.

[0060] like Figure 3 As shown, the width of the transfer machine is set to L, the permanent magnet close to the transfer machine is the head magnet, and the permanent magnet away from the transfer machine is the tail magnet; when the length of the scraper conveyor head retracted into the transfer machine is greater than or equal to L / 8 and less than L / 4, and the coal mining machine cuts from the tail of the scraper conveyor to the head of the scraper conveyor, S3 includes the following steps:

[0061] S31: After the shearer cuts through the tail end of the fully mechanized mining face, the tail magnet resets the travel encoder to zero, the shearer stops pulling, and the hydraulic support and scraper conveyor are pushed toward the coal wall of the fully mechanized mining face in a manner extending from the head to the tail of the scraper conveyor until they stop near the oblique cutting electromagnet distributed at the tail end of the scraper conveyor.

[0062] S32: After the two rollers of the coal shearer are swapped up and down, they are pulled toward the head of the scraper conveyor until they stop at the 10th hydraulic support of the oblique cutting electromagnet distributed near the tail of the scraper conveyor. The coal shearer then obliquely cuts the coal wall of the fully mechanized mining face from this position until it stops at the oblique cutting electromagnet distributed near the tail of the scraper conveyor, and the travel encoder is reset to zero. The two rollers of the coal shearer are swapped up and down, and then the hydraulic support and the scraper conveyor at the tail of the scraper conveyor, located near the oblique cutting electromagnet, move toward the fully mechanized mining face.

[0063] S33, the shearer is pulled toward the tail end of the fully mechanized mining face, the tail magnet resets the travel encoder to zero, the shearer stops pulling, and the two rollers of the shearer are swapped up and down. Then, the shearer is pulled toward the head of the scraper conveyor to the oblique cutting electromagnet distributed near the tail of the scraper conveyor. At this time, the oblique cutting electromagnet, the first angle adjustment electromagnet, and the second angle adjustment electromagnet are all powered off, and the shearer is pulled to the head of the scraper conveyor; the hydraulic support and the scraper conveyor are both powered on. The hydraulic supports extend from the tail of the scraper conveyor to the head of the scraper conveyor and are pushed toward the coal wall of the fully mechanized mining face in sequence until they stop at the 10 groups of hydraulic supports of the oblique cutting electromagnets distributed at the head of the scraper conveyor. After that, the hydraulic supports continue to move toward the fully mechanized mining face until they stop at the oblique cutting electromagnets distributed at the head of the scraper conveyor. The pushing distance of the scraper conveyor decreases in an arithmetic progression of 1 / 20 of the cutting depth until it reaches "zero" at the position where it exceeds the 10 groups of oblique cutting electromagnets of the scraper conveyor.

[0064] S34, the head magnet acts on the travel encoder to reset it to zero. After the upper and lower positions of the two rollers of the coal shearer are swapped, the coal shearer is pulled toward the tail of the scraper conveyor until the oblique cutting feed electromagnet distributed near the tail is close to the 10th hydraulic support in the head direction, and then the coal shearer obliquely cuts from there to the coal wall of the fully mechanized mining working face until the oblique cutting feed electromagnet distributed near the tail is close to the 10th hydraulic support in the tail direction, and stops pulling, and reaches the full cutting depth. At this time, the oblique cutting feed electromagnet, the first angle adjustment electromagnet and the second angle adjustment electromagnet are all powered off, and the coal shearer is pulled to the tail of the scraper conveyor; the hydraulic support and the scraper conveyor are pushed toward the coal wall of the fully mechanized mining working face in a manner extending from the tail of the scraper conveyor to the head direction until they stop at the oblique cutting feed electromagnet distributed near the head of the scraper conveyor;

[0065] S35, repeat steps S31 and S32, the coal shearer is pulled toward the tail direction to the tail end of the fully mechanized mining face, the tail magnet makes the stroke encoder return to zero, the coal shearer stops pulling and the two rollers of the coal shearer are swapped up and down, then the coal shearer is pulled toward the head direction of the scraper conveyor to the oblique cutting electromagnet distributed near the tail of the scraper conveyor, at this time the oblique cutting electromagnet, the first angle adjustment electromagnet and the second angle adjustment electromagnet are all powered off, and the coal shearer is pulled to the head of the scraper conveyor; the hydraulic support and the scraper conveyor are turned off. The conveyors are all pushed toward the coal wall of the fully mechanized mining face in the direction of extending from the tail of the scraper conveyor to the head until they are close to the 30 groups of hydraulic supports of the oblique cutting electromagnets distributed at the head of the scraper conveyor. After that, the hydraulic supports continue to push toward the coal wall of the fully mechanized mining face and stop at the oblique cutting electromagnets distributed at the head of the scraper conveyor. The pushing distance of the scraper conveyor decreases in an arithmetic progression of 1 / 20 of the cutting depth until it reaches "zero" at the 30 groups of hydraulic supports of the oblique cutting electromagnets of the scraper conveyor.

[0066] S36, the oblique cutting electromagnet, the first angle adjustment electromagnet and the second angle adjustment electromagnet are all powered off, and the coal shearer is pulled to the head of the scraper conveyor to cut through the head end of the fully mechanized mining working face; the head magnet acts on the stroke encoder to reset it to zero, and after the upper and lower positions of the two rollers of the coal shearer are swapped, the coal shearer is pulled toward the tail of the scraper conveyor until it stops at the 10th group of hydraulic supports extending toward the tail of the oblique cutting electromagnet near the head end of the scraper conveyor, and then the coal shearer obliquely cuts from there to the coal wall of the fully mechanized mining working face until it stops at the length of 20 groups of hydraulic supports extending toward the tail of the machine, and reaches the full cutting depth. During this process, the oblique cutting electromagnet, the first angle adjustment electromagnet and the second angle adjustment electromagnet are all powered off, and the coal shearer is pulled to the tail end of the scraper conveyor, and the hydraulic supports and the scraper conveyor are pushed toward the coal wall of the fully mechanized mining working face in a manner extending from the tail of the scraper conveyor to the head direction until they stop at the oblique cutting electromagnet distributed near the head of the scraper conveyor;

[0067] S37, repeat S31, S32, S33, S34, S35 and S36 in sequence, and the starting point of the next oblique cutting point close to the head end of the scraper conveyor is the end point of the full cutting depth of the previous oblique cutting, until the length of the scraper conveyor head retracted into the transfer machine is less than L / 8 and the cycle stops.

[0068] In this embodiment, after the coal mining machine cuts through the head for the first time, the stroke encoder is reset to zero due to the action of the head magnet set at the 5# hydraulic support, the coal mining machine stops pulling, the two rollers of the coal mining machine are swapped up and down, and the coal mining machine is pulled toward the tail of the machine to cut the bottom coal of the coal mining machine body section, and the floating coal in front of the scraper conveyor transition chute is also cleaned up. Whether the floating coal there is cleaned up is monitored by the camera installed on the top beam of the hydraulic support at the head end, and the picture is compared with the picture of the floating coal being cleaned up. If the picture is inconsistent, the floating coal cleaning electromagnet at the head end is energized. When the coal mining machine is pulled toward the tail of the machine to the floating coal cleaning electromagnet, the stroke encoder is reset to zero, the two rollers of the coal mining machine are swapped up and down and pulled toward the head end, and the head end of the fully mechanized mining working face is "cut through" again. At this time, under the action of the magnet on the machine head, the two rollers of the coal mining machine are swapped up and down and pulled in the opposite direction, that is, pulled toward the tail of the machine, and at the same time, the floating coal in front of the transition chute of the scraper conveyor is cleaned again. This step may be repeated several times until the picture taken by the camera is consistent with the picture of the floating coal being cleaned. The floating coal cleaning electromagnet is powered off, and the coal mining machine continues to be pulled toward the tail of the machine until the tail of the machine is cut through for the third time. At this time, the hydraulic support follows the machine and moves from the tail of the machine to the head of the machine to 10#, and the push slide is pushed out. From the machine head to the 10# hydraulic support, the section from 30#-10# hydraulic support is the angle and inclination adjustment section of the scraper conveyor. In this section, the coal cutting depth of the coal mining machine gradually increases from "0" at the 10# hydraulic support to the full cutting depth at the 30# hydraulic support. The hydraulic support frame moving step from 10#-30# gradually increases from "0" to the full cutting depth, and the incremental step is 1 / 20 of the full cutting depth. From 30# to the tail of the machine, the coal mining machine cuts coal at the full cutting depth, the hydraulic support frame moves at the full cutting depth and the scraper conveyor pushes the coal.

[0069] Repeat S31, S32, S33, S34, S35 and S36 until the coal mining machine has completed the third and fourth cutting of the tail of the machine, and cut through the second head of the machine at full cutting depth from the tail of the machine. The hydraulic support moving step distance from the tail of the machine to the 50# hydraulic support is the full cutting depth. In the 50#-30# section, the moving step distance gradually decreases from the full cutting depth to "0", and the decreasing step distance is 1 / 20 of the full cutting depth. The pushing step distance gradually decreases from the full cutting depth to "0", which serves as the angle and inclination adjustment section for the next coal cutting.

[0070] In this embodiment, the coal cutting by the shearer, the shifting of the hydraulic support and the pushing of the scraper conveyor in the comprehensive mining working face are all carried out in a cyclic production mode of 2 times at the tail of the machine and 1 time at the head of the machine, until the overlapping length of the scraper conveyor head and the transfer machine is retracted, that is, the length of the deviation from the optimal value by the retraction of the head of the transfer machine is less than L / 8, and then the two-way coal cutting regular cycle mode of Example 2 is adopted for production.

[0071] Through the coal cutting of the comprehensive mining working face, the hydraulic support moving frame and the scraper conveyor pushing, the adjustment of the advancement direction of the comprehensive mining working face is achieved in a circular production mode of 2 times at the tail of the machine: 1 time at the head of the machine, so that the length of the scraper conveyor head retracting or extending is balanced and offset, ensuring the continuous and normal safe production of the comprehensive mining working face.

[0072] The same as the above process is that when the length of the scraper conveyor head out of the transfer machine is greater than or equal to L / 8 and less than L / 4, and the coal mining machine cuts from the head of the scraper conveyor to the tail of the scraper conveyor, it is also an irregular cycle, which is a production method of 1 pass at the tail: 2 passes at the head. Figure 4 The detailed process is not repeated here.

[0073] Example 4

[0074] This embodiment is a production method of an irregular cycle with multiple turning points and multiple passes at the tail and one pass at the head, and the contents repeated in the embodiment 2 will not be repeated here.

[0075] like Figure 5 As shown, the width of the transfer machine is defined as L, the permanent magnet close to the transfer machine is the head magnet, and the permanent magnet far from the transfer machine is the tail magnet; 140 sets of hydraulic supports are sequentially provided from the head to the tail of the scraper conveyor, forming a support system, which are numbered as hydraulic support No. 1, hydraulic support No. 2, hydraulic support No. 3...hydraulic support No. 139 and hydraulic support No. 140 from the head to the tail; when the length of the scraper conveyor head retracted into the transfer machine is greater than or equal to L / 4, and the coal mining machine cuts from the tail of the scraper conveyor toward the head of the scraper conveyor, S3 includes the following steps:

[0076] S31, the coal shearer is pulled toward the tail of the scraper conveyor to cut and penetrate the tail of the first pass, the hydraulic support and the scraper conveyor are moved and pushed toward the tail of the machine to stop at the No. 130 hydraulic support, the first transition section of the scraper conveyor is between the No. 120 hydraulic support and the No. 130 hydraulic support, after the coal shearer cuts through the coal wall at the tail of the machine, the encoder is reset to zero by the magnet at the tail of the machine, and after the two rollers of the coal shearer are swapped up and down, the coal shearer is pulled toward the head of the machine to cut, and gradually obliquely cuts into the next coal wall from the first transition section of the scraper conveyor to the No. 120 hydraulic support and the No. 110 hydraulic support, the coal shearer reaches the full cutting depth and is powered on the tail side oblique cutting electromagnet at the time, the encoder is reset to zero and the coal shearer stops pulling, the two rollers of the coal shearer are swapped up and down, the support system and the scraper conveyor are moved and pushed toward the tail of the machine from the No. 130 hydraulic support; the coal shearer is pulled toward the tail of the machine to cut and penetrate the tail of the second pass and is reset to the magnet at the tail The encoder of the magnet action returns to zero and traction stops. After the two rollers of the coal mining machine are swapped up and down, the coal mining machine is pulled toward the head direction to cut to the section from No. 120 hydraulic support to No. 110 hydraulic support, among which: the push slide of the scraper conveyor decreases from the full cutting depth stroke of the tail of the machine at an equal interval of 1 / 20 of the cutting depth to zero at No. 120 hydraulic support, and the oblique cutting electromagnet on the tail side is powered again in time. The encoder of the coal mining machine is reset to zero under the action of its magnetic force, and the coal mining machine stops traction and its two rollers are swapped up and down, and then pulled toward the tail direction to cut through the tail of the machine for the third time. The encoder of the coal mining machine is reset to zero under the action of the magnet at the tail of the machine, and the two rollers of the coal mining machine are swapped up and down, and then cut toward the head direction to the section from No. 86 hydraulic support to No. 76 hydraulic support. The support system and the scraper conveyor are moved from the tail to the head direction to push the slide to No. 86 hydraulic support and stop. The second transition section of the scraper conveyor is between the No. 96 support system and the section from the No. 86 support system.

[0077] S32, the encoder of the first angle adjustment electromagnet on the tail side of the coal mining machine is reset to zero by the timely power supply, the coal mining machine stops pulling and its two rollers are swapped up and down and pulled toward the tail of the machine, and gradually cuts obliquely into the next coal wall from the second transition section of the scraper conveyor to the No. 96 hydraulic support section to reach the full cutting depth, and then is pulled toward the tail of the machine to cut through the fourth machine, the support system and the scraper conveyor are moved and pushed from the No. 86 hydraulic support toward the tail of the machine to the No. 120 hydraulic support and stop, after the coal mining machine cuts through the coal wall at the tail of the machine, the encoder is reset to zero by the tail magnet, the coal mining machine stops pulling and its two rollers are swapped up and down and pulled toward the head of the machine to cut, and gradually cuts obliquely into the next coal wall from the first transition section of the scraper conveyor to the No. 120 hydraulic support to the No. 11 In the No. 0 hydraulic support section, the shearer reaches full cutting depth and is acted upon by the tail side oblique cutting electromagnet that is powered in time. The encoder returns to zero and the shearer stops pulling. Its two rollers are swapped up and down. The support system and scraper conveyor are moved and pushed from the No. 130 hydraulic support toward the tail of the machine. The shearer is pulled toward the tail of the machine to cut through the tail for the fifth time. Then, under the action of the tail magnet, the shearer encoder returns to zero and stops pulling. After the two rollers of the shearer are swapped up and down, they are pulled toward the head of the machine to cut to the section from the No. 52 hydraulic support to the No. 42 hydraulic support. The support system and scraper conveyor are moved and pushed from the tail of the machine to the head of the machine and stop at the No. 52 hydraulic support. The third transition section of the scraper conveyor is from the No. 62 hydraulic support to the No. 52 hydraulic support.

[0078] S33, the encoder of the shearer is reset to zero by the first angle adjustment electromagnet on the head side of the coal mining machine which is powered in time, the shearer stops pulling and its two rollers are swapped up and down and then pulled toward the tail of the machine, and gradually cuts obliquely into the next coal wall from the third transition section of the scraper conveyor to the No. 62 hydraulic support section. After reaching the full cutting depth, the shearer is pulled toward the tail of the machine to cut through the sixth tail of the machine, and the support system and the scraper conveyor are moved and pushed from the No. 52 hydraulic support toward the tail of the machine to the No. 130 hydraulic support and stop. After the shearer cuts through the coal wall at the tail of the machine, the encoder is reset to zero by the magnet on the tail of the machine, the shearer stops pulling and its two rollers are swapped up and down and then pulled toward the head of the machine to cut, and gradually cuts obliquely into the next coal wall from the first transition section of the scraper conveyor to the No. 120 hydraulic support to the No. 110 hydraulic support. In the hydraulic support section, the shearer reaches the full cutting depth and is acted upon by the timely powered tail side oblique cutting electromagnet, and the encoder returns to zero. The shearer stops pulling and its two rollers are swapped up and down. The support system and scraper conveyor are moved and pushed from the No. 130 hydraulic support toward the tail of the machine. Then the shearer is pulled toward the tail of the machine to cut through the seventh pass. The tail of the machine is acted upon by the tail magnet again. The shearer encoder returns to zero and the shearer stops pulling. After the two rollers are swapped up and down, they are pulled toward the head of the machine to cut to the section from the No. 20 hydraulic support to the No. 10 hydraulic support. The support system and scraper conveyor are moved and pushed from the tail of the machine to the head of the machine and stop at the No. 20 hydraulic support. The fourth transition section of the scraper conveyor is from the No. 30 hydraulic support to the No. 20 hydraulic support.

[0079] S34. The encoder of the shearer is reset to zero by the electromagnet on the head side of the machine that is powered in time. The shearer stops pulling and its two rollers are swapped up and down, and then it is pulled toward the tail of the machine along the fourth transition section of the scraper conveyor and gradually cuts obliquely into the next coal wall until the No. 30 hydraulic support section reaches the full cutting depth. Then the shearer is pulled toward the tail of the machine to cut through the 8th tail of the machine. The support system and the scraper conveyor execute the following operation procedure and move the frame and slide toward the tail of the machine from the No. 20 hydraulic support to the No. 130 hydraulic support and stop. After the shearer cuts through the coal wall at the tail of the machine, the encoder is reset to zero by the magnet on the tail of the machine. The shearer stops pulling and its two rollers are swapped up and down, and then it is pulled toward the head of the machine to cut. It gradually cuts obliquely into the next coal wall from the first transition section of the scraper conveyor. The coal mining machine reaches the full cutting depth and is affected by the timely powered tail side oblique cutting electromagnet. The encoder is reset to zero and the traction is stopped. The two rollers of the coal mining machine are swapped up and down. The support system and the scraper conveyor are moved and pushed from the No. 130 hydraulic support to the tail of the machine. The coal mining machine is pulled toward the tail of the machine to cut through the 9th pass. The tail of the machine is then affected by the tail magnet. The encoder of the coal mining machine is reset to zero and the traction is stopped. The two rollers are swapped up and down and then pulled toward the head of the machine to cut through the coal wall of the head of the machine for the first pass. The support system and the scraper conveyor are moved from the tail of the machine to the head of the machine and pushed to the No. 10 hydraulic support to stop. The fifth transition section of the scraper conveyor is from the No. 20 hydraulic support to the 10 hydraulic support section.

[0080] S35, the encoder of the coal mining machine is reset to zero by the action of the head magnet and stops pulling, and after the upper and lower positions of its two rollers are swapped, it is pulled toward the tail of the machine along the fifth transition section of the scraper conveyor and gradually obliquely cuts into the next coal wall until the No. 20 hydraulic support section reaches the full cutting depth. The encoder of the coal mining machine is reset to zero by the action of the head side oblique cutting electromagnet powered by appropriate power and stops pulling, the upper and lower positions of the two rollers of the coal mining machine are swapped, the support system and the scraper conveyor are moved and pushed toward the head of the machine from the No. 10 hydraulic support, the coal mining machine is pulled toward the head of the machine to cut and cut through the second pass, and the head of the machine is again affected by the head magnet. The encoder of the coal mining machine is reset to zero and stops pulling, and after the upper and lower positions of its two rollers are swapped, it is pulled toward the tail of the machine to cut and cut through the coal wall at the tail of the machine for the 10th pass, the support system and the scraper conveyor are moved and pushed from the head of the machine to the tail of the machine to stop at the No. 130 hydraulic support;

[0081] S36, repeat S31, S32, S33, S34 and S35 in sequence until the length of the scraper conveyor head retracted into the transfer machine is less than L / 8 and the cycle is stopped.

[0082] At this point, the coal mining machine has completed 9 times of irregular cycle angle and inclination adjustment production of the machine tail and 1 time of the machine head through the first to fourth turning points. After completing the second time of the machine head, it will continue to carry out the next cycle of irregular cycle angle and inclination adjustment production of multiple turning points and multiple times of the machine tail and 1 time of the machine head until the overlap length of the scraper conveyor and the transfer machine returns to the set range of 1 / 8L and stops, and the regular cycle production of two-way coal cutting is resumed.

[0083] In this embodiment, specifically, adjusting the shearer head angle and tilting it 6.4 meters in the lagging direction allows the overlap length between the scraper conveyor and the loader to return to the set range. Starting from the tail of the shearer's first pass through the coal mining face, the four points within the fully mechanized mining face, namely, the oblique cutting electromagnet near the tail end, the angle adjustment electromagnet near the tail end, the angle adjustment electromagnet near the head end, and the oblique cutting electromagnet at the head end, are used as turning points. The first turning point is the installation point of the electromagnet for oblique cutting on the tail side, the second turning point is the installation point of the electromagnet for angle adjustment on the tail side, the third turning point is the installation point of the electromagnet for angle adjustment on the head side, and the fourth turning point is the installation point of the electromagnet for oblique cutting on the head side. The processor supplies power to each electromagnet in a timely manner according to the coal mining machine operation diagram of the irregular cycle multi-turn point multi-pass tail: 1 pass head production mode and the cutting operation position of the coal mining machine. After power supply, the electromagnet resets the stroke encoder on the coal mining machine, and the coal mining machine stops the current traction direction, swaps the upper and lower positions of the two rollers, and then the coal mining machine pulls and cuts in the opposite direction. The hydraulic support and scraper conveyor execute the following operation procedure of moving the frame and pushing the slide according to the position of the coal mining machine, traction direction and cutting depth.

[0084] According to the running position of the coal mining machine when it cuts through the first inflection point from the head to the tail, the electromagnet at the first inflection point is not energized, and the coal mining machine completes the first tail cutting. The transition section of the scraper conveyor is at 120#-130#. Under the action of the magnet at the tail, the coal mining machine cuts obliquely along the 130#-120# transition section toward the head to the first inflection point of 120#. At this time, the coal mining machine, under the action of the electromagnet at the first inflection point, cuts through the triangular coal with a full knife toward the tail, completing the second tail cutting. Under the action of the magnet at the tail, the coal mining machine is pulled toward the tail to the 120#-110# section with an empty knife. The 20 sets of hydraulic supports from the first inflection point of the tail to the tail execute the following operation procedure and move from the tail to the head. Pushing is to cut at 1 / 20 of the full cutting depth from the tail. The depth is gradually reduced in equal steps to zero at the 120 hydraulic support, and two full-cut frame shifting and pushing slides are completed in a regular cycle; at this time, according to the coal mining machine operation diagram of this production cycle, the processor supplies power to the electromagnet of the first inflection point in a timely manner. Under the action of its magnetic force, the coal mining machine stops here and pulls the top and bottom knife drums toward the head of the machine, and the top and bottom knife drums exchange positions and pull and cut toward the tail of the machine. The coal mining machine pushes the slide from zero to the full cutting depth along the 120# to the tail of the machine. The scraper conveyor gradually cuts into the coal wall from zero to the full cutting depth when the tail of the machine is cut through for the third time. After cleaning the floating coal, the coal mining machine changes the position of the top and bottom knife drums and pulls toward the head of the machine under the action of the magnet at the tail of the machine. At this time, the processor no longer supplies power to the electromagnet of the first inflection point, and the coal mining machine cuts with full knife from the first inflection point to the second inflection point. The hydraulic support and scraper conveyor The machine executes the following operation procedure, moving the frame and pushing the slide from the tail of the machine to the 120# section, and gradually reducing the depth from full cutting depth to zero with 1 / 20 cutting depth as the interval, and moving the frame and pushing the slide from the 120#-86# hydraulic support section to full cutting depth, and the transition section is in the 96#-86# hydraulic support section; at this time, according to the coal mining machine operation diagram of the production cycle mode, the processor energizes the electromagnet at the location when the coal mining machine reaches the second turning point, and generates a magnetic effect on the stroke encoder of the coal mining machine, and the coal mining machine cuts into the coal wall obliquely from the second turning point along the 86# to 96# transition section toward the tail of the machine for the fourth time, and the hydraulic support and scraper conveyor execute the following operation procedure, moving the frame and pushing the slide from 86# toward the tail of the machine, and stops at the 130# hydraulic support, and the transition section is in the 120# to 130# section; at the tail of the machine Under the action of the magnet, the shearer cuts obliquely along the 130#-120# transition section toward the head of the machine to the first inflection point of 120#. The hydraulic support and scraper conveyor execute the following operation procedure, and complete the frame shifting and pushing from 120# to the tail of the machine. At this time, under the action of the electromagnet at the first inflection point, the shearer fully cuts through the triangular coal in the direction of the tail of the machine, completing the fifth round of cutting at the tail of the machine. At this time, the electromagnets at the first and second points are powered off. Under the action of the magnet at the tail of the machine, the shearer is pulled toward the tail of the machine and obliquely cuts into the coal wall along the 130#-120# transition section to the 42#-52# section. The hydraulic support and scraper conveyor execute the following operation procedure, shifting and pushing from the tail of the machine to the head of the machine to the third inflection point, the 52# hydraulic support, and stops. The transition section is the 62#-52# hydraulic support section.At this time, the processor supplies power to the electromagnet at the third inflection point according to the coal mining machine operation diagram of this production cycle mode. The coal mining machine stops here and pulls the top and bottom knife drums toward the machine head to change positions and then pulls toward the machine tail along the 52#-62# transition section to cut into the coal wall with full knife cutting through the machine tail for the 6th time. The hydraulic support and scraper conveyor execute the following machine operation procedure and move the frame and push the slide from 52# toward the machine tail to stop at the 130# hydraulic support. The transition section is from 120# to 130#. Under the action of the magnet at the machine tail, the coal mining machine cuts obliquely along the 130#-120# transition section toward the machine head to the first inflection point of 120#. The hydraulic support and scraper conveyor execute the following machine operation procedure and move from 120# to the machine tail. The shearer completes the frame shifting and pushing, and at this time, under the action of the electromagnet at the 1st inflection point, the shearer fully cuts the triangular coal toward the tail of the machine, completing the 7th cutting at the tail of the machine. At this time, the electromagnets at the 1st, 2nd and 3rd inflection points are powered off, and under the action of the magnet at the tail of the machine, the shearer pulls and cuts toward the head of the machine to the 10#-20# section, and the hydraulic support and scraper conveyor execute the following operation procedure to shift the frame from the tail of the machine to the head of the machine, push the slide to the 4th inflection point 20# hydraulic support and stop, and the transition section is in the 30#-20# hydraulic support section; at this time, the processor supplies power to the electromagnet at the 4th inflection point according to the shearer operation diagram of this production cycle mode, and the shearer stops here and pulls the top and bottom knife drums toward the head of the machine, changes their positions, and then pulls toward the tail of the machine. The coal wall is cut obliquely along the 20#-30# transition section and the cutter is fully cut through the tail of the machine for the 8th time. The hydraulic support and scraper conveyor execute the following machine operation procedure to move the frame and push the slide from 20# to the tail of the machine to stop at the 130# hydraulic support. The transition section is from 120# to 130#. Under the action of the magnet at the tail of the machine, the coal mining machine cuts obliquely along the 130#-120# transition section toward the head of the machine to the first inflection point of 120#. The hydraulic support and scraper conveyor execute the following machine operation procedure to complete the moving frame and pushing from 120# to the tail of the machine. At this time, the processor powers the electromagnet of the first inflection point according to the coal mining machine operation diagram of this production cycle mode. The encoder of the coal mining machine returns to zero under the action of its magnetic force and stops moving toward the head of the machine. After the top and bottom cutter drums change their positions, they are pulled toward the tail of the machine to cut through the tail of the machine for the 9th time. At this time, the electromagnets at the 1st, 2nd, 3rd, and 4th turning points are all powered off. Under the action of the magnets at the tail of the machine, the shearer is pulled toward the head of the machine to cut through the head of the machine for the 1st time. The hydraulic supports and scraper conveyors follow the machine operation procedure, move the frames from the tail of the machine to the head of the machine, push and slide to the 10# hydraulic support and stop. The transition section is at the 20#-10# hydraulic support section. Under the action of the magnets at the head of the machine, the shearer cuts obliquely along the 10#-20# transition section toward the head of the machine to the 4th turning point of the 20#. The hydraulic supports and scraper conveyors follow the machine operation procedure, move the frames from the head of the machine to the tail of the machine, push and slide to the 20# hydraulic support.At this point, the shearer has completed nine passes of tail angle and tilt adjustment, one pass of head angle and tilt adjustment, through four inflection points. It is now ready for the next cycle of one head angle and nine passes of tail angle and tilt adjustment. If the overlap length between the scraper conveyor and the transfer machine changes by less than L / 8, the angle and tilt adjustment cycle ends. The processor then energizes the first and fourth inflection points (i.e., the head and tail angle and tilt adjustment electromagnets) and the floating coal cleaning electromagnets, while de-energizing the first and second angle and tilt adjustment electromagnets, in accordance with the regular cycle of bidirectional coal cutting. This means the cycle continues as in Example 2.

[0085] In the above steps, the processor only supplies power to the floating coal cleaning electromagnet and the tail side oblique cutting electromagnet in a timely manner, and also supplies power to the tail side angle adjustment electromagnet and the head side angle adjustment electromagnet once in succession; when the coal mining machine passes through the above oblique cutting and two angle adjustment electromagnets, it is controlled by the electromagnet once and returns to the tail once, and both cut the tail normally twice. When the head cut through the first time, the coal mining machine cut the tail 9 times, which is an emergency angle adjustment and inclination production mode. Because the distance measuring sensor used to monitor the change in the overlap length of the scraper conveyor and the transfer machine is in a real-time monitoring state, when the change value is detected to be greater than or equal to L / 8 and less than L / 4, the processor will intelligently execute the informal cycle of 2 tail: 1 head angle adjustment production mode of Example 3 to timely adjust the advancement direction of the comprehensive mining working face, and effectively curb the retraction or outward movement of the scraper conveyor head.

[0086] The same as the above process is that when the length of the scraper conveyor head out of the transfer machine is greater than or equal to L / 4, and the coal mining machine cuts from the head of the scraper conveyor to the tail of the scraper conveyor, it is also an irregular cycle, which is a production method of 1 pass tail: multiple passes head, as shown in the following example. Figure 6 The detailed process is not repeated here.

[0087] It should be noted that the above solution is an embodiment of bidirectional coal cutting, and the above solution is also applicable to the production scenario of unidirectional coal cutting in practice.

Claims

1. A fully mechanized mining face adjustment method, characterized in that: The following steps are involved: S1, a permanent magnet, an oblique cutting electromagnet, a first angle adjustment electromagnet and a second angle adjustment electromagnet are sequentially arranged in a manner extending from both ends of the fully mechanized mining working face to the middle thereof, wherein: One second angle adjustment electromagnet is distributed in the middle of the fully mechanized mining working face, the two permanent magnets are symmetrically distributed about the second angle adjustment electromagnet, the two bevel feed electromagnets are symmetrically distributed about the second angle adjustment electromagnet, and the two first angle adjustment electromagnets are symmetrically distributed about the second angle adjustment electromagnet; the permanent magnet, the bevel feed electromagnet, the first angle adjustment electromagnet, and the second angle adjustment electromagnet are all arranged in the connecting plate of the coal baffle of the scraper conveyor; S2, the distance measuring sensor monitors the length of the scraper conveyor head retracting or extending out of the transfer machine and transmits the length data to the processor; S3, the processor selects to power on or off the oblique cutting feed electromagnet, the first angle adjustment electromagnet and the second angle adjustment electromagnet arranged on the scraper conveyor through the length data to cooperate with the travel encoder installed on the coal mining machine, so that the coal mining machine can adjust its propulsion direction relative to the comprehensive mining working face at the corresponding oblique cutting feed electromagnet, the first angle adjustment electromagnet and the second angle adjustment electromagnet.

2. The fully mechanized mining face adjustment method according to claim 1, characterized in that: The width of the transfer machine is L, the permanent magnet close to the transfer machine is the head magnet, and the permanent magnet far from the transfer machine is the tail magnet; When the length of the head of the scraper conveyor retracting into or out of the transfer machine is less than L / 8, and the coal mining machine starts cutting from the vicinity of the tail of the scraper conveyor toward the tail of the scraper conveyor, S3 includes the following steps: S31, after the shearer cuts through the tail end of the fully mechanized mining face, the tail magnet resets the travel encoder to zero, the shearer stops pulling, and the hydraulic supports and the scraper conveyor are sequentially pushed toward the coal wall of the fully mechanized mining face in a manner extending from the head toward the tail of the scraper conveyor until they stop near the oblique cutting electromagnet distributed at the tail end of the scraper conveyor; S32, after the two rollers of the coal shearer are swapped in vertical position, they are pulled toward the head of the scraper conveyor to the 10th hydraulic support of the oblique cutting electromagnet distributed near the tail of the scraper conveyor and then stop pulling. Then, the coal shearer obliquely cuts the coal wall of the fully mechanized mining face from this position to the oblique cutting electromagnet distributed near the tail of the scraper conveyor and then stops pulling. The stroke encoder is reset to zero. The two rollers of the coal shearer are swapped in vertical position. Then, the hydraulic support and the scraper conveyor from the oblique cutting electromagnet distributed near the tail of the scraper conveyor to the tail section of the scraper conveyor are moved toward the fully mechanized mining face. S33: The shearer is pulled toward the tail end of the fully mechanized mining face, and after the tail magnet resets the travel encoder to zero, the shearer stops pulling, and the two rollers of the shearer are swapped up and down, the shearer is pulled toward the head of the scraper conveyor to the oblique cutting feed electromagnet distributed near the tail end of the scraper conveyor. At this time, the oblique cutting feed electromagnet, the first angle adjustment electromagnet, and the second angle adjustment electromagnet are all powered off, and the shearer is pulled to the head end of the scraper conveyor; the hydraulic support and the scraper conveyor are both pushed toward the coal wall of the fully mechanized mining face in a manner extending from the tail end of the scraper conveyor toward the head end, until they stop at the oblique cutting feed electromagnet distributed near the head end of the scraper conveyor. S34: After the shearer cuts through the head end of the fully mechanized mining face, the head magnet resets the travel encoder to zero, the shearer stops pulling, and the hydraulic supports and the scraper conveyor move toward the fully mechanized mining face in sequence, extending from the tail end of the scraper conveyor toward the head end, until they stop near the oblique cutting electromagnets distributed at the head end of the scraper conveyor. S35, after the two rollers of the coal shearer are swapped up and down, they are pulled toward the tail of the scraper conveyor to the 10th hydraulic support of the oblique cutting electromagnet distributed near the head of the scraper conveyor and then stop pulling. Then, the coal shearer obliquely cuts the coal wall of the fully mechanized mining face from this position to the oblique cutting electromagnet distributed near the head of the scraper conveyor and then stops pulling and the stroke encoder is reset to zero. The two rollers of the coal shearer are swapped up and down, and then the hydraulic support and the scraper conveyor from the oblique cutting electromagnet distributed near the head of the scraper conveyor to the head of the scraper conveyor are moved toward the fully mechanized mining face. S36, the coal shearer is pulled toward the head direction to the head end of the fully mechanized mining face, the head magnet resets the stroke encoder, the coal shearer stops pulling, and the two rollers of the coal shearer are swapped up and down. Then, the coal shearer is pulled toward the tail of the scraper conveyor to the oblique cutting feed electromagnet distributed near the head of the scraper conveyor. At this time, the oblique cutting feed electromagnet, the first angle adjustment electromagnet, and the second angle adjustment electromagnet are all powered off, and the coal shearer is pulled to the tail of the scraper conveyor; the hydraulic support and the scraper conveyor are both pushed toward the coal wall of the fully mechanized mining face in a manner extending from the head to the tail of the scraper conveyor until they stop at the oblique cutting feed electromagnet distributed near the tail of the scraper conveyor; S37, loop steps S31, S32, S33, S34, S35 and S36.

3. The fully mechanized mining face adjustment method according to claim 1, characterized in that: The width of the transfer machine is L, the permanent magnet close to the transfer machine is the head magnet, and the permanent magnet far from the transfer machine is the tail magnet; When the length of the scraper conveyor head retracted into the transfer machine is greater than or equal to L / 8 and less than L / 4, and the coal mining machine cuts from the tail of the scraper conveyor to the head of the scraper conveyor, S3 includes the following steps: S31, after the shearer cuts through the tail end of the fully mechanized mining face, the tail magnet resets the travel encoder to zero, the shearer stops pulling, and the hydraulic supports and the scraper conveyor are sequentially pushed toward the coal wall of the fully mechanized mining face in a manner extending from the head toward the tail of the scraper conveyor until they stop near the oblique cutting electromagnet distributed at the tail end of the scraper conveyor; S32, after the two rollers of the coal shearer are swapped in vertical position, they are pulled toward the head of the scraper conveyor to the 10th hydraulic support of the oblique cutting electromagnet distributed near the tail of the scraper conveyor and then stop pulling. Then, the coal shearer obliquely cuts the coal wall of the fully mechanized mining face from this position to the oblique cutting electromagnet distributed near the tail of the scraper conveyor and then stops pulling. The stroke encoder is reset to zero. The two rollers of the coal shearer are swapped in vertical position. Then, the hydraulic support and the scraper conveyor from the oblique cutting electromagnet distributed near the tail of the scraper conveyor to the tail section of the scraper conveyor are moved toward the fully mechanized mining face. S33, the coal shearer is pulled toward the tail end of the machine to the tail end of the fully mechanized mining face, the tail magnet resets the travel encoder to zero, the coal shearer stops pulling, and the two rollers of the coal shearer are swapped up and down. Then, the coal shearer is pulled toward the head end of the scraper conveyor to the oblique cutting electromagnet distributed near the tail end of the scraper conveyor. At this time, the oblique cutting electromagnet, the first angle adjustment electromagnet and the second angle adjustment electromagnet are all powered off, and the coal shearer is pulled to the head end of the scraper conveyor; the hydraulic support and the scraper conveyor are The conveyors are pushed toward the coal wall of the fully mechanized mining face in the direction of extending from the tail of the scraper conveyor to the head until they stop near the 10 groups of hydraulic supports of the oblique cutting electromagnets distributed at the head of the scraper conveyor. After that, the hydraulic supports continue to move toward the fully mechanized mining face until they stop at the oblique cutting electromagnets distributed at the head of the scraper conveyor. The pushing distance of the scraper conveyor decreases in an arithmetic progression of 1 / 20 of the cutting depth until it reaches "zero" beyond the 10 groups of oblique cutting electromagnets of the scraper conveyor. S34, the head magnet acts on the travel encoder to reset it to zero, and after the upper and lower positions of the two rollers of the coal shearer are swapped, the coal shearer is pulled toward the tail of the scraper conveyor until the oblique cutting feed electromagnet distributed near the tail is close to the 10th hydraulic support in the head direction, and then the coal shearer obliquely cuts from there to the coal wall of the fully mechanized mining working face until the oblique cutting feed electromagnet distributed near the tail is close to the 10th hydraulic support in the tail direction, and stops pulling, and reaches the full cutting depth, at which time the oblique cutting feed electromagnet, the first angle adjustment electromagnet and the second angle adjustment electromagnet are all powered off, and the coal shearer is pulled to the tail of the scraper conveyor; the hydraulic support and the scraper conveyor are pushed toward the coal wall of the fully mechanized mining working face in a manner extending from the tail of the scraper conveyor to the head direction until they stop at the oblique cutting feed electromagnet distributed near the head of the scraper conveyor; S35, repeat steps S31 and S32, the coal mining machine is pulled toward the tail direction to the tail end of the fully mechanized mining face, the tail magnet makes the travel encoder return to zero, the coal mining machine stops pulling and the two rollers of the coal mining machine are swapped up and down, and then the coal mining machine is pulled toward the head direction of the scraper conveyor to the oblique cutting electromagnet distributed near the tail of the scraper conveyor. At this time, the oblique cutting electromagnet, the first angle adjustment electromagnet and the second angle adjustment electromagnet are all powered off, and the coal mining machine is pulled to the head of the scraper conveyor; the hydraulic support The scraper conveyor and the scraper conveyor are pushed toward the coal wall of the fully mechanized mining face in a manner extending from the tail of the scraper conveyor to the head of the scraper conveyor until they are close to the 30 groups of hydraulic supports of the oblique cutting electromagnets distributed at the head of the scraper conveyor. After that, the hydraulic supports continue to push toward the coal wall of the fully mechanized mining face and stop at the oblique cutting electromagnets distributed at the head of the scraper conveyor. The pushing distance of the scraper conveyor decreases in an arithmetic progression of 1 / 20 of the cutting depth until it reaches "zero" at the 30 groups of hydraulic supports of the oblique cutting electromagnets of the scraper conveyor. S36, the oblique cutting electromagnet, the first angle adjustment electromagnet and the second angle adjustment electromagnet are all powered off, and the shearer is pulled to the head end of the scraper conveyor head to cut through the fully mechanized working face; the head magnet acts on the travel encoder to reset it to zero, and after the two rollers of the coal shearer are swapped up and down, the coal shearer is pulled toward the tail end of the scraper conveyor, and stops pulling at the 10th group of hydraulic supports extending toward the tail end of the oblique cutting electromagnet close to the head end of the scraper conveyor, and then the coal shearer moves from there to the fully mechanized working face. The coal wall of the working face is cut obliquely and fed to the length of 20 groups of hydraulic supports extending toward the tail of the machine, and then the traction is stopped and the full cutting depth is reached. During this process, the oblique cutting electromagnet, the first angle adjustment electromagnet, and the second angle adjustment electromagnet are all powered off, and the coal mining machine is pulled to the tail end of the scraper conveyor. The hydraulic supports and the scraper conveyor are pushed toward the coal wall of the fully mechanized mining working face in sequence in a manner extending from the tail of the scraper conveyor toward the head of the machine until they stop at the oblique cutting electromagnet distributed near the head of the scraper conveyor. S37, repeat S31, S32, S33, S34, S35 and S36 in sequence, and the starting point of the next oblique cutting point close to the head end of the scraper conveyor is the end point of the full cutting depth of the previous oblique cutting, until the length of the head of the scraper conveyor retracted into the transfer machine is less than L / 8 and the cycle stops.

4. The fully mechanized mining face adjustment method according to claim 1, characterized in that: The width of the transfer machine is L. The permanent magnet close to the transfer machine is the head magnet, and the permanent magnet away from the transfer machine is the tail magnet. 140 sets of hydraulic supports are sequentially arranged from the head to the tail of the scraper conveyor, forming a support system. From the head to the tail, they are numbered No. 1 hydraulic support, No. 2 hydraulic support, No. 3 hydraulic support... No. 139 hydraulic support and No. 140 hydraulic support. When the length of the scraper conveyor head retracted into the transfer machine is greater than or equal to L / 4, and the coal mining machine cuts from the tail of the scraper conveyor to the head of the scraper conveyor, S3 includes the following steps: S31, the coal shearer is pulled toward the tail of the scraper conveyor to cut and penetrate the tail of the first pass, the hydraulic support and the scraper conveyor are moved and pushed toward the tail of the machine to stop at the No. 130 hydraulic support, the first transition section of the scraper conveyor is between the No. 120 hydraulic support and the No. 130 hydraulic support section, after the coal shearer cuts through the coal wall at the tail of the machine, the encoder is reset to zero by the tail magnet, and after the two rollers of the coal shearer are swapped up and down, the coal shearer is pulled toward the head of the machine to cut, gradually obliquely cutting into the next coal wall from the first transition section of the scraper conveyor to the No. 120 hydraulic support and the No. 110 hydraulic support section, the coal shearer reaches the full cutting depth and is powered by the tail side oblique cutting electromagnet in time, the encoder is reset to zero and the coal shearer stops pulling, the two rollers of the coal shearer are swapped up and down, the support system and the scraper conveyor are moved and pushed toward the tail of the machine from the No. 130 hydraulic support; the coal shearer is pulled toward the tail of the machine to cut and penetrate the tail of the second pass and is again reset by the tail magnet The encoder is reset to zero under the action of the magnet and traction is stopped. After the upper and lower positions of the two rollers of the coal mining machine are swapped, the coal mining machine is pulled toward the head direction to cut to the section from No. 120 hydraulic support to No. 110 hydraulic support, wherein: the scraper conveyor pushes the slide from the full cutting depth stroke of the tail of the machine at an equal interval of 1 / 20 of the cutting depth to zero at No. 120 hydraulic support, and the oblique cutting electromagnet on the tail side is powered again in time. The encoder of the coal mining machine is reset to zero under the action of its magnetic force, and the coal mining machine stops pulling and after the upper and lower positions of its two rollers are swapped, it is pulled toward the tail direction to cut and cut through the tail for the third time. The encoder of the coal mining machine is reset to zero under the action of the tail magnet, and after the upper and lower positions of the two rollers of the coal mining machine are swapped, it cuts toward the head direction to the section from No. 86 hydraulic support to No. 76 hydraulic support, and the support system and the scraper conveyor are moved from the tail to the head direction to push the slide to No. 86 hydraulic support and stop, and the second transition section of the scraper conveyor is between the No. 96 support system and the No. 86 support system and the section; S32, the encoder of the coal mining machine is reset to zero by the action of the first angle adjustment electromagnet on the tail side of the machine which is powered in time, the coal mining machine stops pulling and its two rollers are switched up and down and then pulled toward the tail direction of the machine, and gradually cuts obliquely into the next coal wall from the second transition section of the scraper conveyor to the No. 96 hydraulic support section to reach the full cutting depth, and then pulls toward the tail direction of the machine to cut through the fourth tail of the machine, and the support system and the scraper conveyor are moved and pushed from the No. 86 hydraulic support toward the tail direction to the No. 120 hydraulic support and stop, and after the coal mining machine cuts through the tail coal wall, the encoder is reset to zero by the action of the tail magnet, the coal mining machine stops pulling and its two rollers are switched up and down and then pulled toward the head direction to cut, and gradually cuts obliquely into the next coal wall from the first transition section of the scraper conveyor to the No. 120 hydraulic support to the No. 120 hydraulic support. In the No. 10 hydraulic support section, the coal mining machine reaches the full cutting depth and is acted upon by the tail side oblique cutting electromagnet that is powered in time. The encoder returns to zero and the coal mining machine stops pulling. Its two rollers are swapped up and down. The support system and the scraper conveyor are shifted and pushed from the No. 130 hydraulic support toward the tail of the machine. The coal mining machine is pulled toward the tail of the machine to cut through the tail of the machine for the fifth time and then, under the action of the tail magnet, the coal mining machine encoder returns to zero and stops pulling. After the two rollers of the coal mining machine are swapped up and down, they are pulled toward the head of the machine to cut to the section from the No. 52 hydraulic support to the No. 42 hydraulic support. The support system and the scraper conveyor are shifted and pushed from the tail of the machine to the head of the machine to stop at the No. 52 hydraulic support. The third transition section of the scraper conveyor is from the No. 62 hydraulic support to the No. 52 hydraulic support section. S33, the encoder of the coal mining machine is reset to zero by the first angle adjustment electromagnet on the head side of the coal mining machine which is powered in time, the coal mining machine stops pulling and its two rollers are swapped up and down and then pulled toward the tail of the machine, and gradually cuts obliquely into the next coal wall from the third transition section of the scraper conveyor to the No. 62 hydraulic support section. After reaching the full cutting depth, the coal mining machine is pulled toward the tail of the machine to cut through the sixth tail of the machine, and the support system and the scraper conveyor are moved and pushed from the No. 52 hydraulic support toward the tail of the machine to the No. 130 hydraulic support and stop. After the coal mining machine cuts through the coal wall at the tail of the machine, the encoder is reset to zero by the tail magnet, the coal mining machine stops pulling and its two rollers are swapped up and down and then pulled toward the head of the machine to cut, and gradually cuts obliquely into the next coal wall from the first transition section of the scraper conveyor to the No. 120 hydraulic support to the No. 110 hydraulic support. In the hydraulic support section, the coal mining machine reaches the full cutting depth and is acted upon by the tail side oblique cutting electromagnet with timely power supply, and the encoder returns to zero. After the coal mining machine stops pulling and its two rollers are swapped up and down, the support system and the scraper conveyor are moved and pushed from the No. 130 hydraulic support toward the tail of the machine. Then the coal mining machine is pulled toward the tail of the machine to cut through the 7th time. The tail of the machine is acted upon by the tail magnet again, and the encoder of the coal mining machine returns to zero and the coal mining machine stops pulling. After the two rollers are swapped up and down, the coal mining machine is pulled toward the head of the machine to cut to the section from the No. 20 hydraulic support to the No. 10 hydraulic support. The support system and the scraper conveyor are moved and pushed from the tail of the machine to the head of the machine to stop at the No. 20 hydraulic support. The fourth transition section of the scraper conveyor is from the No. 30 hydraulic support to the No. 20 hydraulic support section. S34. The encoder of the shearer is reset to zero by the electromagnet on the head side of the machine that is powered in time. The shearer stops pulling and its two rollers are swapped up and down, and then it is pulled toward the tail of the machine along the fourth transition section of the scraper conveyor and gradually cuts obliquely into the next coal wall until the No. 30 hydraulic support section reaches the full cutting depth. Then the shearer is pulled toward the tail of the machine to cut through the 8th tail of the machine. The support system and the scraper conveyor execute the following operation procedure and move the frame and slide toward the tail of the machine from the No. 20 hydraulic support to the No. 130 hydraulic support and stop. After the shearer cuts through the coal wall at the tail of the machine, the encoder is reset to zero by the magnet on the tail of the machine. The shearer stops pulling and its two rollers are swapped up and down, and then it is pulled toward the head of the machine to cut, and gradually cuts obliquely into the next coal wall from the first transition section of the scraper conveyor. At the section from No. 120 hydraulic support to No. 110 hydraulic support, the coal mining machine reaches full cutting depth and is acted upon by the timely powered tail side oblique cutting electromagnet, the encoder is reset to zero and the traction is stopped. The two rollers of the coal mining machine are swapped up and down, the support system and the scraper conveyor are moved and pushed from No. 130 hydraulic support toward the tail of the machine, the coal mining machine is pulled toward the tail of the machine to cut through the 9th pass, the tail of the machine is then acted upon by the tail magnet, the encoder of the coal mining machine is reset to zero and the traction is stopped, the two rollers are swapped up and down, the coal mining machine is pulled toward the head of the machine to cut through the coal wall of the head of the machine for the 1st pass, the support system and the scraper conveyor are moved from the tail of the machine to the head of the machine and pushed to the No. 10 hydraulic support and stop. The fifth transition section of the scraper conveyor is from the No. 20 hydraulic support to the 10 hydraulic support section; S35, the encoder of the coal mining machine is reset to zero by the action of the head magnet and stops pulling, and after the upper and lower positions of its two rollers are swapped, it is pulled toward the tail of the machine along the fifth transition section of the scraper conveyor and gradually cuts obliquely into the next coal wall until the No. 20 hydraulic support section reaches the full cutting depth. The encoder of the coal mining machine is reset to zero by the action of the head side oblique cutting electromagnet powered by appropriate power and stops pulling, and the upper and lower positions of the two rollers of the coal mining machine are swapped, and the support system and the scraper conveyor are moved and pushed toward the head of the machine from the No. 10 hydraulic support. The coal mining machine is pulled toward the head of the machine to cut and cut through the second pass. The head of the machine is then reset to zero by the action of the head magnet and stops pulling, and after the upper and lower positions of its two rollers are swapped, it is pulled toward the tail of the machine to cut and cut through the coal wall at the tail of the machine for the 10th pass. The support system and the scraper conveyor are moved and pushed from the head of the machine to the tail of the machine to stop at the No. 130 hydraulic support; S36, repeat S31, S32, S33, S34 and S35 in sequence until the length of the scraper conveyor head retracted into the transfer machine is less than L / 8 and the cycle is stopped.

5. The fully mechanized mining face adjustment method according to any one of claims 2 to 4, characterized in that: A floating coal cleaning electromagnet and a camera are arranged between the head magnet and the oblique cutting electromagnet distributed near the head of the scraper conveyor, and between the tail magnet and the oblique cutting electromagnet distributed near the tail of the scraper conveyor; The travel encoder of the shearer is reset to zero at the head magnet or the tail magnet, and after the two rollers of the shearer are swapped up and down, a camera takes a photo and sends the photo information to the processor for comparison with the photo information after the floating coal is cleaned; If the floating coal is cleaned: the coal shearer is pulled toward the tail or head of the scraper conveyor and the adjacent floating coal cleaning electromagnets are de-energized; If the floating coal is not cleaned cleanly: the coal shearer is pulled toward the tail or head of the scraper conveyor and the adjacent floating coal cleaning electromagnet is energized. After the coal shearer reaches the floating coal cleaning electromagnet, the travel encoder is reset to zero, the two rollers of the coal shearer are swapped up and down and pulled in the opposite direction to the permanent magnet. A photo is then taken by the camera, and the photo information is sent to the processor for comparison with the photo information after the floating coal is cleaned to determine whether the floating coal is cleaned cleanly.

6. An intelligent adjustment system for a fully mechanized mining face, applying the fully mechanized mining face adjustment method according to any one of claims 1 to 5; characterized in that: include: Distance measuring sensor, installed on the head of scraper conveyor, is used to monitor the length of the scraper conveyor head retracting or extending out of the transfer machine; A travel encoder is installed on the shearer to measure the travel position of the shearer; Permanent magnets are installed on the head and tail sides of the scraper conveyor. They reset the shearer travel encoder to zero through magnetic signals, and are used to control the shearer traction to not exceed the cutting range, swap the upper and lower positions of the two rollers, and change the traction and cutting direction. The oblique cutting electromagnet is provided at the head side and the tail side of the scraper conveyor; and A plurality of angle adjustment electromagnets are evenly spaced between the two bevel cutting electromagnets; The permanent magnet, the oblique cutting feed electromagnet and the multiple angle adjustment electromagnets are arranged in sequence and are all used to cooperate with the travel encoder. The oblique cutting feed electromagnet and the angle adjustment electromagnet cooperate with the travel encoder to adjust the propulsion direction of the coal mining machine relative to the fully mechanized mining working face.

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