Fully mechanized coal mining face straightening system based on correlation type photoelectric sensor

Abstract

The utility model provides a fully mechanized coal mining face straightening system based on correlation type photoelectric sensors, and belongs to the technical field of fully mechanized coal mining face straightening. The problems that according to an existing fully mechanized coal mining face straightening scheme, straightening cannot be conducted every time, and data processing is complex are solved. Comprising a photoelectric receiver and a photoelectric emitter which are installed on the left side and the right side of each hydraulic support, the photoelectric receiver and the photoelectric emitter on each hydraulic support are electrically connected with a support controller on the hydraulic support, and every two support controllers are connected in series through a connecting line and then electrically connected with a main controller. The main controller is used for sending a support control signal to the support controller, and the support controller controls the hydraulic support to act according to the control signal sent by the main controller; the straightening device is applied to straightening of the fully mechanized coal mining face.

Description

Technical Field

[0001] The utility model provides a fully-mechanized mining face straightening system based on a transmissive photoelectric sensor, belonging to the technical field of fully-mechanized mining face straightening. Background Art

[0002] The intellectualization and unmanned operation of fully-mechanized coal mining faces are the current development trends in the field of coal mining. However, how to automatically control the fully-mechanized coal mining face to have a good straightness has always been the core problem restricting the development of this research direction. In addition, with the improvement of the requirements for the working face standards, more and more fully-mechanized coal mining faces are required to achieve "three straightnesses", that is, to ensure that the hydraulic supports, scraper conveyors, and coal walls are straight lines. Since the shearer is installed on the scraper conveyor, and the straightness of the scraper conveyor depends on the adjustment of the hydraulic supports, and the key to whether the hydraulic supports can be accurately straightened lies in when to stop the movement of the support frames. Therefore, determining the stop timing of the support frame movement is the key to straightening the support frames.

[0003] However, the current straightening systems or methods still have the following problems:

[0004] ① The current solutions on the market cannot straighten every cut, that is, they cannot ensure that every cut is a straight line. It is necessary to measure one cut and straighten the next cut.

[0005] ② The current straightening solutions on the market are basically based on inertial navigation. However, this solution has complex data processing, a long data link, a high risk of errors, a large maintenance difficulty, and expensive equipment. Summary of the Utility Model

[0006] In order to solve the problems existing in the current fully-mechanized mining face straightening solutions, that is, unable to straighten every cut and having complex data processing, the utility model provides a fully-mechanized mining face straightening system based on a transmissive photoelectric sensor. The purpose is to improve the hardware of the straightening system to achieve straightening in one cut at the hardware level.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: A fully-mechanized mining face straightening system based on a transmissive photoelectric sensor includes photoelectric receivers and photoelectric transmitters installed on the left and right sides of each hydraulic support. The photoelectric receivers and photoelectric transmitters on each hydraulic support are electrically connected to the support controller on the same hydraulic support. The support controllers of two adjacent supports are connected in series through connecting wires and then electrically connected to the main controller. The main controller is used to send support control signals to the support controllers, and the support controllers control the actions of the hydraulic supports according to the control signals sent by the main controller.

[0008] The photoelectric receivers and photoelectric transmitters installed on the left and right sides of all hydraulic supports are all on the same horizontal line.

[0009] On the opposite sides of adjacent hydraulic supports, a photoelectric receiver and a photoelectric transmitter of a transmissive photoelectric sensor are respectively installed.

[0010] The support controller adopts an electro-hydraulic controller.

[0011] A display screen and keys are arranged on the main controller.

[0012] The coal cutting direction of the shearer can be preset in the main controller, so as to configure the signal emission directions of the photoelectric receiver and the photoelectric transmitter on adjacent hydraulic supports.

[0013] The beneficial effects of the present utility model compared with the prior art are as follows: Based on the transmissive photoelectric sensor, after two supports are aligned, the receiving end of the photoelectric sensor can receive the signal emitted by the transmitting end, and whether the support has been moved into place can be judged through this signal. It can be realized that each cut is a straightening cut, and the working face is straight after each cut. Moreover, the structure of the present utility model is simple, the data link is short, and the maintenance cost is low. Description of the Drawings

[0014] The following further describes the present utility model with reference to the drawings:

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic diagram of realizing straightening in one cut of the present utility model;

[0017] In the figure: 1 is a photoelectric receiver, 2 is a photoelectric transmitter, 3 is a support controller, 4 is a connecting wire, and 5 is a main controller. Detailed Embodiment

[0018] As Figure 1 and 2 shown, the present utility model provides a fully-mechanized coal mining face straightening system based on a transmissive photoelectric sensor, including a photoelectric receiver 1, a photoelectric transmitter 2, a support controller 3, a connecting wire 4, and a main controller 5. A photoelectric receiver 1 and a photoelectric transmitter 2 are installed on the left and right sides of each hydraulic support respectively. The photoelectric receiver 1 and the photoelectric transmitter 2 installed on the same hydraulic support are both connected to the support controller 3 of the hydraulic support, and communication with the support controller 3 can be realized. The support controllers 3 of two adjacent hydraulic supports are connected by a connecting wire 4 and can communicate with each other. Moreover, the support controller 3 is also connected to the main controller 5 through the connecting wire 4, and the support controller 3 can communicate with the main controller 5. The photoelectric signals of the photoelectric receiver 1 and the photoelectric transmitter 2 are transmitted to the main controller 5, and the main controller 5 sends a support control signal to the support controller 3, and the support controller 3 controls the support action according to the signal of the main controller 5.

[0019] The principle of the present utility model is as follows:

[0020] The coal mining machine cuts coal forward, and the hydraulic supports behind it are pulled toward the coal wall one by one. During the pulling process of the current hydraulic support, the photoelectric signal of the photoelectric transmitter 2 of the hydraulic support is aligned with the photoelectric receiver 1 of the hydraulic support behind. At this time, the support controller 3 receives the photoelectric signal and transmits the signal to the main controller 5. The main controller 5 sends a signal to stop pulling the support to the hydraulic support currently pulling the support. After receiving the signal, the support controller 3 executes the stop pulling action. At this point, the hydraulic support is pulled and aligned with the hydraulic support behind. Similarly, when the coal mining machine moves forward, each subsequent hydraulic support will be aligned with the hydraulic support behind it to achieve straightening of the working face support.

[0021] like Figure 2 As shown in the figure, the process of bracket straightening is as follows:

[0022] Step 1: Assume that the coal mining machine moves to the left to cut coal. When the coal mining machine reaches the position shown in the figure, the No. 6 hydraulic support just starts to move. At this time, the No. 6 hydraulic support moves toward the coal wall.

[0023] Step 2: As the support moves, the signal ray emitted by the photoelectric transmitter 6B of hydraulic support No. 6 will get closer and closer to the photoelectric receiver 7A of hydraulic support No. 7, until the photoelectric receiver 7A receives the signal emitted by the photoelectric transmitter 6B, at which time hydraulic support No. 7 will generate a signal that the movement is completed.

[0024] Step 3: The moving stop signal generated in step 2 is transmitted to the main controller 5, and the main controller 5 sends a signal to stop the moving of the hydraulic support 6. At this point, the moving of the hydraulic support No. 6 is completed.

[0025] Step 4: As the coal mining machine moves, a new frame support is triggered, and the above steps are continued in a cycle.

[0026] In the above case, the coal mining machine moves to the left, the signal transmitting end is the transmitting end of the moving frame support, and the signal receiving end is the receiving end with a number larger than the moving frame number. If the support moves to the right, the signal transmitting end is the transmitting end with a number smaller than the moving frame number, and the signal receiving end is the receiving end of the moving frame plus sign itself. The above rules can be flexibly configured in the main controller 5.

[0027] Regarding the specific structure of the present utility model, it should be noted that the connection relationships between the various component modules adopted by the present utility model are determined and achievable. Except for the special descriptions in the embodiments, the specific connection relationships can bring corresponding technical effects, and on the premise of not relying on the execution of corresponding software programs, the technical problems proposed by the present utility model can be solved. The models of the components, modules, and specific components, the connection methods between them, and the conventional usage methods and predictable technical effects brought by the above technical features, except for the specific descriptions, all belong to the publicly disclosed content in patents, journal papers, technical manuals, technical dictionaries, and textbooks that those skilled in the art can obtain before the filing date, or belong to the prior art such as the conventional techniques and common general knowledge in the art, and there is no need to elaborate. This makes the technical solution provided in this case clear, complete, and achievable, and the corresponding physical product can be reproduced or obtained according to this technical means.

[0028] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A fully mechanized mining face straightening system based on a beam-type photoelectric sensor, characterized in that: The invention comprises a photoelectric receiver (1) and a photoelectric transmitter (2) installed on the left and right sides of each hydraulic support. The photoelectric receiver (1) and the photoelectric transmitter (2) on each hydraulic support are electrically connected to a support controller (3) on the hydraulic support. Two support controllers (3) are connected in series via a connecting line (4) and then electrically connected to a main controller (5). The main controller (5) is used to send a support control signal to the support controller (3). The support controller (3) controls the action of the hydraulic support according to the control signal sent by the main controller (5).

2. According to claim 1, a fully mechanized mining face straightening system based on a through-beam photoelectric sensor is characterized in that: The photoelectric receivers (1) and photoelectric transmitters (2) installed on the left and right sides of all hydraulic supports are located on the same horizontal line.

3. The fully mechanized mining face straightening system based on a through-beam photoelectric sensor according to claim 1 is characterized in that: A photoelectric receiver (1) and a photoelectric transmitter (2) of a counter-beam photoelectric sensor are respectively installed on opposite sides of adjacent hydraulic supports.

4. The fully mechanized mining face straightening system based on a through-beam photoelectric sensor according to claim 1 is characterized in that: The support controller (3) adopts an electro-hydraulic controller.

5. The fully mechanized mining face straightening system based on a through-beam photoelectric sensor according to claim 1 is characterized in that: The main controller (5) is provided with a display screen and buttons.

6. The fully mechanized mining face straightening system based on a through-beam photoelectric sensor according to claim 1 is characterized in that: The main controller (5) can be pre-set in the coal cutting direction of the coal mining machine, thereby configuring the signal transmission direction of the photoelectric receiver (1) and the photoelectric transmitter (2) on the adjacent hydraulic support.

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