Working path of coal face heading machine gun head

Abstract

The invention discloses a working path of a coal face heading machine gun head, which is characterized in that a coal face is divided into an upper working face and a lower working face, the height of the upper working face is two thirds of the height of the coal face, and the height of the lower working face is one third of the height of the coal face. Then, bottom sweeping cutting is conducted on the lower working face, and then if the two cut sides of the coal face are uneven, side brushing cutting is conducted on the two sides. By optimizing the cutting track, the tunneling efficiency, the forming quality and the automation level of a mine are remarkably improved, and a more efficient, safer and more flexible operation mode is provided for coal mining.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining, and in particular to a working path of a gun head of a tunnel boring machine on a coal mining working face. Background Art

[0002] As an important mechanical equipment in mining, the roadheader is mainly used in mine tunnel excavation projects. At present, the operation trajectory of the roadheader gun head in the existing coal mine excavation working face mostly relies on the workers' experience to operate, resulting in problems such as no standard operation of the gun head cutting trajectory, over-excavation and under-excavation of the tunnel section, uneven tunnel section forming size, and difficulty in ensuring the stability of the coal wall. In addition, it wastes human resources and cost investment. In the context of intelligent cutting, it is necessary to design a fixed path for cutting to improve the automation control level of the roadheader. Summary of the invention

[0003] The object of the present invention is to provide a working path of a gun head of a coal mining face tunneling machine, aiming to solve at least one of the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned object, the technical solution adopted is as follows:

[0004] The working path of the tunneling machine gun head of the coal mining face divides the coal mining face into an upper working face and a lower working face. First, the upper working face is cut, and then the lower working face is swept and cut. After that, if the two sides of the coal mining face are uneven after cutting, the two sides are brushed and cut.

[0005] Preferably, the height of the upper working face is two-thirds of the height of the coal mining working face, and the height of the lower working face is one-third of the height of the coal mining working face.

[0006] Preferably, there are two trajectories for cutting the upper working surface, and one cutting trajectory can be selected arbitrarily.

[0007] Preferably, the first cutting trajectory: the starting position of the gun head is located in the middle of the bottom of the upper working surface, that is, the a0 position, runs upward to the top of the upper working surface, that is, the a1 position, runs to the right to the right end of the upper working surface, that is, the a2 position, runs to the left to the left end of the upper working surface, that is, the a3 position, returns a distance of at least one gun head diameter to the a4 position, runs downward a distance of one gun head diameter to the a5 position, runs to the left to the left end of the upper working surface, that is, the a6 position, and then cuts downward in sequence with reference to the running trajectory of the gun head from the a2 position to the a6 position.

[0008] Preferably, the second cutting trajectory: the starting position of the gun head is located in the middle of the bottom of the upper working surface, that is, the b0 position, runs to the left to the left end of the upper working surface, that is, the b1 position, returns a distance of a gun head diameter to the b2 position, runs upward a distance of a gun head diameter to the b3 position, runs right to the right end of the upper working surface, that is, the b4 position, and then cuts upward in sequence with reference to the running trajectory of the gun head from the b1 position to the b4 position.

[0009] Preferably, the bottom scanning cutting trajectory is: the starting position of the gun head is located in the middle of the top of the lower working surface, that is, the c0 position, and it runs to the left to the left end of the lower working surface, that is, the c1 position, and then runs downward a distance of a gun head diameter to the c2 position, and runs to the right to the right end of the lower working surface, that is, the c3 position, and then cuts downward in sequence according to the running trajectory of the gun head from the c1 position to the c3 position.

[0010] Preferably, the brush side cutting trajectory is: the starting position of the gun head is located at the bottom or top of the side wall, and cutting is performed along the side wall in a continuous Z-shaped trajectory.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) Reduce manual intervention: The optimized cutting trajectory reduces the need for manual trimming and improves the level of automation. Through precise trajectory planning, it reduces manual operations and improves the safety and stability of mine operations.

[0013] (2) Improved forming quality: The optimized cutting trajectory improves the cross-sectional quality of the coal mine tunnel, avoids the unevenness caused by uneven cutting, improves the forming accuracy, and reduces the difficulty of subsequent operations.

[0014] (3) Promote the process of intelligence: Optimized cutting trajectory is a key step in unmanned operation. By reducing manual intervention and improving the level of automation, the production process of the mine becomes more intelligent, reducing costs and improving overall efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the first cutting trajectory of the present invention.

[0017] Figure 2 It is a schematic diagram of the second cutting trajectory of the present invention.

[0018] Figure 3It is a schematic diagram of the bottom sweeping and cutting trajectory of the present invention.

[0019] Figure 4 It is a schematic diagram of the brush cutting trajectory of the present invention. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] A preferred embodiment of the present invention provides a working path for a gun head of a tunnel boring machine at a coal mining working face, and the intelligent tunnel boring machine cuts the working face according to the path, as follows.

[0023] The coal mining working face in this embodiment is trapezoidal or rectangular, and is divided into an upper working face and a lower working face. The division principle is: the height of the upper working face is two-thirds of the height of the coal mining working face, and the lower working face is one-third of the height of the coal mining working face.

[0024] First, the upper working surface is cut. There are two trajectories for cutting the upper working surface, namely, a first cutting trajectory and a second cutting trajectory. One cutting trajectory can be selected at will.

[0025] like Figure 1 As shown, the first cutting trajectory: the starting position of the tunnel boring machine gun head is located in the middle of the bottom of the upper working surface, that is, the a0 position, and it runs upward to the top of the upper working surface, that is, the a1 position, and runs to the right to the right end of the upper working surface, that is, the a2 position, and returns to the a1 position along the a2 to a1 path, and runs to the left to the left end of the upper working surface, that is, the a3 position, and returns along the a3 to a1 path by a distance of at least one gun head diameter. In this embodiment, it preferably returns a distance of one gun head diameter to the a4 position, and runs downward a distance of one gun head diameter to the a5 position, and runs to the left to the left end of the upper working surface, that is, the a6 position, and then cuts downward in sequence with reference to the running trajectory of the gun head from the a2 position to the a6 position until the cutting of the upper working surface is completed.

[0026] like Figure 2As shown in the figure, the second cutting trajectory: the starting position of the tunnel boring machine gun head is located in the middle of the bottom of the upper working face, that is, the b0 position, and it runs to the left to the left end of the upper working face, that is, the b1 position, and returns a distance of a gun head diameter to the b2 position, and runs upward a distance of a gun head diameter to the b3 position, and runs to the right to the right end of the upper working face, that is, the b4 position, and then refers to the running trajectory of the gun head from the b1 position to the b4 position to perform cutting upward in sequence until the upper working face is cut.

[0027] Then the lower working surface is scanned and cut. Figure 3 As shown, the bottom sweeping and cutting trajectory is: the starting position of the tunnel boring machine gun head is located in the middle of the top of the lower working face, that is, the c0 position, and it runs to the left to the left end of the lower working face, that is, the c1 position, and then runs downward a distance of a gun head diameter to the c2 position, and then runs to the right to the right end of the lower working face, that is, the c3 position, and then refers to the running trajectory of the gun head from the c1 position to the c3 position to cut downward in sequence until the cutting of the lower working face is completed.

[0028] Afterwards, if the two sides of the coal mining face are not smooth after cutting, the two sides will be brushed and cut. Figure 3 As shown, the brush cutting track: the starting position of the gun head is located at the bottom or top of the side wall, and the cutting is performed along the side wall in a continuous Z-shaped track. In this embodiment, both side walls are uneven. First, the left side wall is cut from the bottom with a continuous Z-shaped track, and ends at the top of the left side wall. Then, the right side wall is cut from the top with a continuous Z-shaped track, and ends at the bottom of the right side wall.

[0029] To sum up, the working path of the gun head of a coal mining face tunneling machine described in an embodiment of the present invention and the optimization of the cutting trajectory significantly improve the tunneling efficiency, forming quality and automation level of the mine, providing a more efficient, safer and more flexible operating method for coal mining.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The working path of the gun head of the coal mining face boring machine is characterized by: The coal mining working face is divided into an upper working face and a lower working face. First, the upper working face is cut, and then the lower working face is cut by sweeping the bottom. After that, if the two sides of the coal mining working face are uneven after cutting, the two sides are cut by brushing the sides.

2. The working path of the gun head of the coal mining working face tunneling machine according to claim 1 is characterized in that: The height of the upper working face is two-thirds of the height of the coal mining working face, and the lower working face is one-third of the height of the coal mining working face.

3. The working path of the gun head of the coal mining working face tunneling machine according to claim 1 is characterized in that: There are two trajectories for cutting the upper working surface, and you can choose any one of them.

4. The working path of the gun head of the coal mining working face tunneling machine according to claim 3 is characterized in that: The first cutting trajectory: the starting position of the gun head is located in the middle of the bottom of the upper working surface, that is, the a0 position, and it runs upward to the top of the upper working surface, that is, the a1 position, and then runs to the right to the right end of the upper working surface, that is, the a2 position, and runs to the left to the left end of the upper working surface, that is, the a3 position, and returns to a distance of at least one gun head diameter to the a4 position, and then runs downward a distance of one gun head diameter to the a5 position, and runs to the left to the left end of the upper working surface, that is, the a6 position, and then cuts downward in sequence according to the running trajectory of the gun head from the a2 position to the a6 position.

5. The working path of the gun head of the coal mining working face tunneling machine according to claim 3 is characterized in that: The second cutting trajectory: the starting position of the gun head is located in the middle of the bottom of the upper working surface, that is, the b0 position, and it runs to the left to the left end of the upper working surface, that is, the b1 position, and returns a distance of a gun head diameter to the b2 position, and runs upward a distance of a gun head diameter to the b3 position, and runs to the right to the right end of the upper working surface, that is, the b4 position, and then cuts upward in sequence according to the running trajectory of the gun head from the b1 position to the b4 position.

6. The working path of the gun head of the coal mining working face tunneling machine according to claim 1 is characterized in that: Bottom sweeping and cutting trajectory: the starting position of the gun head is located in the middle of the top of the lower working surface, that is, the c0 position, and it runs to the left to the left end of the lower working surface, that is, the c1 position, and then runs downward a distance of the gun head diameter to the c2 position, and then runs to the right to the right end of the lower working surface, that is, the c3 position, and then cuts downward in sequence according to the running trajectory of the gun head from the c1 position to the c3 position.

7. The working path of the gun head of the coal mining working face tunneling machine according to claim 1 is characterized in that: Brushing and cutting trajectory: The starting position of the gun head is at the bottom or top of the gang wall, and cutting is performed along the gang wall in a continuous Z-shaped trajectory.

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