Coal mine support alignment detection system

Abstract

The present invention discloses a coal mine comprehensive mining support alignment detection system, including a detection unit, which includes at least two hydraulic supports arranged in sequence along a preset straight line direction, the first hydraulic support is a positioning support for setting a laser head, and the other hydraulic supports are matching supports with a built-in shading structure. The light of the laser head enters the matching support and is projected onto the shading structure to measure the distance, and the hydraulic support and the laser head are communicatively connected to a control device. In the preset frame moving direction, the front end face of the positioning support is the positioning surface, and the front end face of the matching support is the matching surface. In the process of the matching support moving forward so that the matching surface is coplanar with the positioning surface, the control device receives the detection signal of the laser head, and when it is determined that the distance measurement value reaches the set distance requirement, the matching support is controlled to stop moving, and the matching surface is coplanar with the positioning surface. By using the laser head to measure the distance, the relative position relationship between the matching support and the positioning support is judged according to the distance change, so as to improve the efficiency and accuracy of the hydraulic support alignment operation.

Description

Technical Field

[0001] The invention relates to the technical field of equipment movement into position monitoring, and in particular to a fully mechanized mining support alignment detection system for coal mines. Background Art

[0002] The fully mechanized mining face of a coal mine is the first production site of underground coal. Both ends of the fully mechanized mining face are connected to the transport tunnel and the return air tunnel of the working face. The fully mechanized mining face is mainly composed of drum coal mining machine, hydraulic support, scraper conveyor, bridge transfer machine and other equipment.

[0003] Hydraulic supports are supporting equipment for the fully mechanized mining face, supporting the roof of the fully mechanized mining face. After the coal mining machine cuts the coal, the operator operates the hydraulic supports to move the hydraulic supports forward to provide timely support for the roof exposed after the coal cutting, which is called hydraulic support moving. After the hydraulic supports have been moved, all hydraulic supports should remain in a straight line. If the supports cannot remain in a straight line, the straightness of the scraper conveyor cannot be guaranteed when the scraper conveyor is pushed in the next step. If the scraper conveyor is not straight, the coal wall of the working face cannot be cut straight when the coal mining machine cuts the coal, causing serious spalling of the coal wall of the working face and casualties.

[0004] With the advancement of comprehensive mechanized coal mining technology in coal mines, hydraulic support electro-hydraulic control system and machine-based automated coal mining technology are increasingly being used in fully mechanized mining faces. The working face-based automation requires "three straights and two flats", namely, the coal wall, scraper conveyor and support are in a straight line, and the scraper conveyor and support are stable and reliable.

[0005] At present, in order to ensure that all hydraulic supports are aligned, manual adjustment is generally adopted, which is time-consuming and labor-intensive, has low accuracy, and cannot meet the development needs of modern unmanned working faces.

[0006] Therefore, how to improve the efficiency and accuracy of the hydraulic support alignment operation is a technical problem that technicians in this field currently need to solve. Summary of the invention

[0007] In view of this, an object of the present invention is to provide a fully mechanized mining support alignment detection system for coal mines, which can improve the efficiency and accuracy of hydraulic support alignment operations.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A fully mechanized support alignment detection system for coal mines, comprising a detection unit, which comprises at least two hydraulic supports arranged in sequence along a preset straight line direction, and the first hydraulic support is a positioning support for setting a laser head, and the other hydraulic supports are matching supports with built-in shading structures, and the light of the laser head enters the matching support and is projected onto the shading structure to measure the distance, and the hydraulic support and the laser head are communicatively connected to a control device;

[0010] In the preset moving direction, the front end face of the positioning bracket is the positioning face, and the front end face of the mating bracket is the mating face. In the process of the mating bracket moving forward so that the mating face is coplanar with the positioning face, the control device receives the detection signal of the laser head, and when it is determined that the ranging value reaches the set distance requirement, controls the mating bracket to stop moving, and the mating face is coplanar with the positioning face.

[0011] Preferably, the shading structure is a shading plate, and in the preset frame shifting direction, the front end of the shading plate is in contact with the mating surface, and the rear end is located in the middle of the mating bracket; in the detection unit, when the mating surface is coplanar with the positioning surface, in the preset frame shifting direction, the light from the laser head is located on the rear side of the shading plate and in contact with the rear end surface of the shading plate.

[0012] Preferably, in the detection unit, the shading plate is arranged to be inclined relative to the preset rack moving direction, and the shading plate gradually deviates toward the positioning bracket along the preset rack moving direction.

[0013] Preferably, in the preset straight line direction, the rear end of the shading plate in the preset frame shifting direction is located in the middle of the matching bracket.

[0014] Preferably, in the preset straight line direction, at least two detection units are arranged in sequence; for adjacent detection units, the positioning bracket in the next detection unit is also the matching bracket of the previous detection unit to form a junction bracket.

[0015] Preferably, in the junction bracket, in the preset rack shifting direction, the laser head is arranged at the rear end of the light shielding structure.

[0016] Preferably, a detection host is arranged on the positioning bracket, and the control device and the laser head are both arranged in the detection host.

[0017] Preferably, it also includes a human-machine interaction device, which is communicatively connected to the control device. A button is set on the human-machine interaction device. After the button is triggered, the corresponding hydraulic support starts to move along the preset frame moving direction.

[0018] Preferably, the buttons include a start button, a next group of buttons and a reset button. After the start button is triggered, the first cooperating bracket starts to move along the preset frame moving direction, after which the start button becomes invalid and the next group of buttons becomes effective. After the next group of buttons is triggered, the next hydraulic bracket adjacent to the hydraulic bracket that has just been moved in the preset straight line direction starts to move along the preset frame moving direction. After the reset button is triggered, the start button becomes effective again.

[0019] Preferably, it also includes a control platform, the control device is connected to the hydraulic support through the control platform, a starting structure is set on the control platform, after the starting structure is triggered, the control device automatically controls at least two hydraulic supports to move continuously and sequentially along the preset frame moving direction through the control platform.

[0020] The coal mine comprehensive mining support alignment detection system provided by the present invention includes a detection unit, which includes at least two hydraulic supports arranged in sequence along a preset straight line direction, and the first hydraulic support is a positioning support for setting a laser head, and the remaining hydraulic supports are matching supports with built-in shading structures. The light from the laser head enters the matching support and is projected onto the shading structure to measure the distance. The hydraulic support and the laser head are communicatively connected to the control device.

[0021] In the preset frame moving direction, the front end face of the positioning bracket is the positioning face, and the front end face of the mating bracket is the mating face. In the process of the mating bracket moving forward to make the mating face coplanar with the positioning face, the control device receives the detection signal of the laser head, and when it is determined that the ranging value reaches the set distance requirement, the control device controls the mating bracket to stop moving so that the mating face is coplanar with the positioning face.

[0022] Taking the positioning bracket as a reference, the laser head is used to emit light into the matching bracket to measure the distance. The relative position relationship between the matching bracket and the positioning bracket in the preset frame moving direction is judged according to the distance change. The judgment is highly accurate and the efficiency of frame moving alignment can be improved. At the same time, the distance measurement based on the laser ranging principle can make full use of the characteristics of high laser brightness and good directionality, is not affected by equipment vibration, can reduce the interference of dust on light, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 This is a system topology diagram of the fully mechanized mining support alignment detection system for coal mines provided by the present invention;

[0025] Figure 2 A schematic diagram of a human-machine interaction device of a fully mechanized mining support alignment detection system for a coal mine provided by the present invention;

[0026] Figure 3 This is a structural diagram of the positioning support of the fully mechanized mining support alignment detection system for coal mines provided by the present invention;

[0027] Figure 4 This is a structural diagram of the matching support of the fully mechanized mining support alignment detection system for coal mines provided by the present invention;

[0028] Figure 5 This is a structural diagram of the handover support of the fully mechanized mining support alignment detection system for coal mines provided by the present invention;

[0029] Figure 6 A schematic diagram of the P0 position frame shifting state of the fully mechanized mining support alignment detection system for coal mines provided by the present invention;

[0030] Figure 7 A schematic diagram of the P1 position frame shifting state of the fully mechanized mining support alignment detection system for coal mines provided by the present invention;

[0031] Figure 8 This is a schematic diagram of the P3 position frame shifting state of the fully mechanized mining support alignment detection system for coal mines provided by the present invention.

[0032] Reference numerals:

[0033] Detection host 1, power supply 11, communication unit 12, main board 13, laser head 14, light 15;

[0034] Human-computer interaction device 2, button 21, start button 211, reset button 212, next group of buttons 213, indicator light 22, red light 221, green light 222, speaker 23;

[0035] Shade 3;

[0036] Hydraulic support 4, matching surface 41, positioning surface 42;

[0037] Control platform 5;

[0038] Valve group 6;

[0039] Detection unit C, positioning bracket D, matching bracket E, and handover bracket F. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The core of the present invention is to provide a fully mechanized mining support alignment detection system for coal mines, which can improve the efficiency and accuracy of hydraulic support alignment operations.

[0042] For a specific embodiment of the coal mine fully mechanized support alignment detection system provided by the present invention, please refer to Figures 1 to 8 , including a detection unit C, the detection unit C includes at least two hydraulic supports 4 arranged in sequence along a preset straight line direction Z, and the first hydraulic support 4 is a positioning support D for setting a laser head 14, based on Figure 6 In the orientation shown, the preset straight line direction Z is downward, the top hydraulic support 4 is the first hydraulic support, and they are arranged in sequence from top to bottom, and the remaining hydraulic supports 4 are matching supports E with built-in shading structures.

[0043] The light from the laser head 14 enters the matching bracket E and is projected onto the light shielding structure to measure the distance. The hydraulic bracket 4 and the laser head 14 are connected to the control device for communication. The positional relationship between the light-transmitting part and the light-shielding part in the hydraulic bracket 4 can be set as needed.

[0044] In the preset rack moving direction X, based on Figure 6 The front end face of the positioning bracket D is the positioning face 42, and the front end face of the matching bracket E is the matching face 41. Figures 6 to 8 As shown, when the mating bracket E moves forward to make the mating surface 41 coplanar with the positioning surface 42, the control device receives the detection signal of the laser head 14, and when it is determined that the distance measurement value reaches the set distance requirement, it controls the mating bracket E to stop moving so that the mating surface 41 and the positioning surface 42 are coplanar.

[0045] Specifically, Figure 6 As shown, in one detection unit C, at least two matching brackets E can be set along the preset straight line direction Z. Optionally, one detection unit C includes six hydraulic brackets 4, specifically including one positioning bracket D and five matching brackets E. In other embodiments, 10, 16 or other numbers of hydraulic brackets can also be included. For each matching bracket E, the corresponding setting distance requirement is different. Specifically, the farther from the positioning bracket D, the larger the setting distance.

[0046] In this embodiment, with the positioning bracket D as a reference, the laser head 14 is used to emit light into the matching bracket E to measure the distance. The relative position relationship between the matching bracket E and the positioning bracket D in the preset frame moving direction X is judged according to the distance change. The judgment is accurate and the efficiency of frame moving alignment can be improved. At the same time, the distance measurement is performed using the laser ranging principle, which can fully utilize the characteristics of high brightness and good directionality of the laser, is not affected by equipment vibration, can reduce the interference of dust on light, and has good practicality.

[0047] Furthermore, the shading structure is a shading plate 3. In the preset rack moving direction X, the front end of the shading plate 3 is in contact with the matching surface 41, and the rear end is located in the middle of the matching bracket E. In each detection unit C, Figure 8 As shown, when the mating surface 41 and the positioning surface 42 are coplanar, in the preset frame moving direction X, the light of the laser head 14 is located on the rear side of the shading plate 3 and is in contact with the rear end surface of the shading plate 3. Based on the position setting of the shading plate 3, the laser head 14 is facilitated to transition the distance measurement of different mating brackets E.

[0048] by Figures 6 to 8 Taking the second hydraulic support 4 in the example, which is the first matching support E, in the process of moving along the preset frame moving direction X, before moving to the P2 state, the shading plate 3 in the first matching support E always blocks the light of the laser head 14. When the P2 state is reached, Figure 8 As shown, the light from the laser head 14 just misses the shading plate 3 and is incident on the shading plate 3 on the second matching bracket E.

[0049] Specifically, in this embodiment, each matching bracket E in the same detection unit C has the same size in the preset straight line direction Z, and the structure, installation position and angle of the light shielding plate 3 are the same. Based on this, the setting distance correspondingly adopted by the control device is an arithmetic progression. Assume that the positioning bracket D is moved to the position. At this time, Figure 6 In the P0 state, the ranging value is L0. When the light hits the end of the shading plate 3 of the first matching bracket E, the ranging value is L1, and the bracket is moved to the P2 state. When the control device determines that the ranging value L is between L0 and L1, the first matching bracket E is being moved and is in the P1 state. The set distance requirement corresponding to the first matching bracket E is: when the control device determines that the ranging value L is just greater than L1, the first matching bracket E is moved into place, and the control device immediately stops the movement of the first matching bracket E; the set distance requirement for the next matching bracket E is: when the control device determines that the ranging value L is just greater than L1 + the thickness of the matching bracket E, the second matching bracket E is moved into place; and so on, the set distance requirement for the Sth matching bracket E is: when the control device determines that the ranging value L is just greater than L1 + (S-1) × the thickness of the matching bracket E, the Sth matching bracket E is moved into place, and S is a positive integer.

[0050] Furthermore, in the detection unit C, the shading plate 3 is tilted relative to the preset rack moving direction X, and the shading plate 3 gradually deviates toward the positioning bracket D along the preset rack moving direction X. When the bracket E is moved, the distance measured by the laser head 14 gradually changes, which is convenient for the control device to analyze the rack moving process. Of course, in other embodiments, the shading plate 3 can also be perpendicular to the preset straight line direction Z.

[0051] Furthermore, in the preset straight line direction Z, the rear end of the shading plate 3 in the preset rack moving direction X is located in the middle of the matching bracket E, that is, Figure 4 In the embodiment, the left end of the shading plate 3 is located in the middle of the matching bracket E in the vertical direction. Accordingly, for each matching bracket E, the end face of the shading plate 3 that is away from the positioning bracket D in the preset straight line direction Z (corresponding to Figure 4 There is a gap between the end face and the shading plate 3 in the up and down directions, which makes it easy to determine whether the light from the laser head 14 completely misses the shading plate 3 in the left and right directions.

[0052] Further, at least two detection units C are arranged in sequence in the preset straight line direction Z. For example, in this embodiment, three detection units C are included, which are the first detection unit C1, the second detection unit C2 and the third detection unit C3. For adjacent detection units C, the positioning bracket D in the next detection unit C is also the matching bracket E of the previous detection unit C to form a junction bracket F.

[0053] That is to say, for the positioning bracket D in the second detection unit C2, it is also the matching bracket in the first detection unit C1 and has dual functions. Accordingly, a shading structure is set in the positioning bracket D constituting the handover bracket F, specifically a shading plate 3, which cooperates with the laser head 14 and the control device in the first detection unit C1. After the last matching bracket E in the first detection unit C1 is moved, it continues to control the movement of the positioning bracket D in the second detection unit C2.

[0054] Specifically, after the last mating bracket in the first detection unit C1 is moved, the light 15 of the laser head 14 in the positioning bracket D in the first detection unit C1 enters the positioning bracket D in the second detection unit C2, that is, the handover bracket F. As the handover bracket F is moved, the ranging value of the laser head 14 in the positioning bracket D in the first detection unit C1 changes. When the corresponding set distance requirement is reached, the positioning surface of the handover bracket F is coplanar with the positioning surface of the positioning bracket D in the first detection unit C1, and the moving of the handover bracket F is completed.

[0055] The hydraulic support 4 is divided into different detection units C for group control, which can reduce the cumulative error, and each detection unit C has at least two hydraulic supports 4, which is conducive to reducing the use of control equipment and reducing costs. At the same time, different detection units C can also be controlled in linkage to improve the degree of automation.

[0056] Furthermore, in the transfer bracket F, in the preset rack moving direction X, the laser head 14 is disposed at the rear end of the light shielding structure.

[0057] Furthermore, a detection host 1 is arranged on the positioning bracket D, and the control device is specifically a mainboard 13. The control device and the laser head 14 are both arranged in the detection host 1. The control device is built into the positioning bracket D, which is beneficial to reducing the space occupied by the equipment.

[0058] Furthermore, the coal mine fully mechanized support alignment detection system also includes a human-machine interaction device 2, and one detection host 1 is equipped with a human-machine interaction device 2. The human-machine interaction device 2 is communicatively connected to the control device, and a button 21 is set on the human-machine interaction device 2. After the button 21 is triggered, the corresponding hydraulic support 4 starts to move along the preset frame moving direction X. The human-machine interaction device 2 is used to facilitate the remote control of the hydraulic support 4. In addition, the detection host 1 and the human-machine interaction device 2 are designed to be split, and the two are designed to be connected by a cable. In addition, wireless connection can also be achieved.

[0059] Further, the button 21 includes a start button 211, a next group of buttons 213 and a reset button 212. After the start button 211 is triggered, the first matching bracket E starts to move along the preset moving direction X, and then the start button 211 fails and the next group of buttons 213 takes effect. When the button takes effect, it can be triggered and generate a signal to send to the control device to control the movement of the hydraulic support 4. When the button fails, it cannot be triggered and cannot control the movement of the hydraulic support 4; after the next group of buttons 213 is triggered, the next hydraulic support 4 adjacent to the hydraulic support 4 that has just moved in the preset straight line direction Z starts to move along the preset moving direction X; after the reset button 212 is triggered, the start button 211 takes effect again. By setting the buttons in groups, the time when each hydraulic support 4 starts to move can be freely controlled separately. In addition, the time when the positioning bracket D starts to move can be controlled by other buttons.

[0060] Furthermore, the coal mine fully mechanized support alignment detection system also includes a control platform 5, and the control device is connected to the hydraulic support 4 through the control platform 5 communication. A starting structure is set on the control platform 5. After the starting structure is triggered, the control device automatically controls at least two hydraulic supports 4 to move continuously and sequentially along the preset frame moving direction X through the control platform 5. That is to say, without the help of the human-computer interaction device 2, only the starting structure on the control platform 5 is triggered, and the control platform 5 cooperates with the detection host 1 to automatically perform the frame moving process, wherein the moment when each hydraulic support 4 starts to move can be automatically controlled by a program pre-stored in the control platform 5.

[0061] Specifically, the detection host 1 includes a communication unit 12, and the control device transmits data with the control platform 5 of the hydraulic support 4 through the communication unit 12, and the data can be transmitted by cable or wireless transmission. The control platform 5 controls the movement process of the hydraulic support 4 by controlling the valve group 6 of the hydraulic support 4.

[0062] Specifically, the detection host 1 includes a power supply 11 , which is a battery or a wired power supply 11 .

[0063] The coal mine fully mechanized mining support alignment detection system provided in this embodiment has the following working process:

[0064] 1. The specific rack moving process is as follows:

[0065] At the initial state P0, the positioning bracket D of the first detection unit C1 completes the rack movement, and the start button 211 on the human-machine interaction device 2 (specifically, the remote control) is pressed. At this time, the green light 222 is on, indicating that the rack movement is allowed. The first matching bracket E is moved to the state P1, and the rack movement continues. At the state P2, the distance measurement value exceeds the detection range. At this time, the red light 221 is on, and the speaker 23 sounds an alarm to stop the rack movement. At this point, the first matching bracket E is moved into place;

[0066] If you want to continue to move the second matching bracket E, press the next group of buttons 213, the green light 222 lights up, the red light 221 goes out, and the speaker 23 stops sounding the alarm, indicating that the rack is allowed to move, and start the rack moving operation until all the hydraulic brackets 4 in the first detection unit C1 are moved, and press the reset button 212 to reset;

[0067] If you want to enter the next detection unit C, perform the same operation.

[0068] 2. Through the control platform 5, the specific rack moving process is as follows:

[0069] The start-up structure of the control platform 5 is triggered, and the detection host 1 transmits the real-time distance measurement value to the control platform 5 through the communication cable. The control platform 5 issues a command through a series of logical operations to control the opening and closing of the valve group 6, thereby realizing the moving process of the hydraulic support 4.

[0070] In this embodiment, the coal mine fully mechanized support alignment detection system can help the staff of the hydraulic support 4 to smoothly move all the hydraulic supports 4 into place, and the operation is flexible, and the human-machine interaction device 2 can be used for on-site key control, and the control platform 5 and the valve group 6 can also be controlled to realize automatic group shifting control. In addition, when used, the control part of the coal mine fully mechanized support alignment detection system can also be integrated with the monitoring and control parts of the support hydraulic pressure, support expansion and contraction amount, lifting frame, scraper conveyor, coal mining machine and other equipment on the same platform control.

[0071] It should be noted that when an element is referred to as "fixed" to another element, it may be directly on the other element or there may be an element in the middle. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an element in the middle. In addition, in the description of the present invention, unless otherwise specified, "multiple", "multiple roots", "multiple groups" mean two or more.

[0072] The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0073] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0074] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0075] The above is a detailed introduction to the coal mine comprehensive mining support alignment detection system provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A fully mechanized mining support alignment detection system for coal mines, characterized in that: The invention comprises a detection unit (C), which comprises at least two hydraulic supports (4) arranged in sequence along a preset straight line direction (Z), wherein the first hydraulic support (4) is a positioning support (D) for arranging a laser head (14), and the remaining hydraulic supports (4) are matching supports (E) with a built-in shading structure, wherein the light of the laser head (14) enters the matching support (E) and is projected onto the shading structure to measure the distance, and the hydraulic support (4) and the laser head (14) are communicatively connected to a control device; In the preset rack moving direction (X), the front end surface of the positioning bracket (D) is the positioning surface, the front end surface of the matching bracket (E) is the matching surface, and in the process of the matching bracket (E) moving forward so that the matching surface and the positioning surface are coplanar, the control device receives the detection signal of the laser head (14), and when it is determined that the distance measurement value reaches the set distance requirement, controls the matching bracket (E) to stop moving, and the matching surface and the positioning surface are coplanar; The shading structure is a shading plate (3), and in the preset rack shifting direction (X), the front end of the shading plate (3) is in contact with the matching surface, and the rear end is located in the middle of the matching bracket (E); in the detection unit (C), when the matching surface and the positioning surface are coplanar, in the preset rack shifting direction (X), the light of the laser head (14) is located at the rear side of the shading plate (3) and in contact with the rear end surface of the shading plate (3); In the detection unit (C), the shading plate (3) is arranged to be inclined relative to the preset rack moving direction (X), and the shading plate (3) gradually deviates toward the positioning bracket (D) along the preset rack moving direction (X).

2. The fully mechanized mining support alignment detection system for coal mines according to claim 1 is characterized in that: In the preset straight line direction (Z), the rear end of the shading plate (3) in the preset rack shifting direction (X) is located in the middle of the matching bracket (E).

3. The fully mechanized mining support alignment detection system for coal mines according to any one of claims 1 to 2, characterized in that: In the preset straight line direction (Z), at least two detection units (C) are arranged in sequence; for adjacent detection units (C), the positioning bracket (D) in the next detection unit (C) is also the matching bracket (E) of the previous detection unit (C) to form a junction bracket (F).

4. According to the coal mine comprehensive mining support alignment detection system according to claim 3, in the handover support (F), in the preset frame shifting direction (X), the laser head (14) is arranged at the rear end of the shading structure.

5. According to the coal mine comprehensive mining support alignment detection system according to any one of claims 1 to 2, a detection host (1) is arranged on the positioning support (D), and the control device and the laser head (14) are both arranged in the detection host (1).

6. The fully mechanized mining support alignment detection system for coal mines according to any one of claims 1 to 2, characterized in that: It also includes a human-machine interaction device (2), the human-machine interaction device (2) is communicatively connected to the control device, a button (21) is provided on the human-machine interaction device (2), and when the button (21) is triggered, the corresponding hydraulic support (4) starts to move along the preset frame shifting direction (X).

7. According to the coal mine comprehensive mining support alignment detection system described in claim 6, the buttons (21) include a start button (211), a next group of buttons (213) and a reset button (212); after the start button (211) is triggered, the first cooperating support (E) starts to move along the preset frame moving direction (X), and then the start button (211) becomes invalid and the next group of buttons (213) becomes effective; after the next group of buttons (213) is triggered, the next hydraulic support (4) adjacent to the hydraulic support (4) that has just been moved in the preset straight line direction (Z) starts to move along the preset frame moving direction (X); after the reset button (212) is triggered, the start button (211) becomes effective again.

8. The fully mechanized mining support alignment detection system for coal mines according to any one of claims 1 to 2, characterized in that: It also comprises a control platform (5), wherein the control device is connected to the hydraulic support (4) via the control platform (5), a start structure is arranged on the control platform (5), and when the start structure is triggered, the control device automatically controls at least two hydraulic supports (4) to move continuously and sequentially along the preset frame moving direction (X) via the control platform (5).

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