Statistical method for cutting parameters of fully mechanized coal mining face

Abstract

The invention provides a statistical method for cutting parameters of a fully-mechanized coal mining face. The statistical method comprises the steps that a first triangular coal area, a normal area and a second triangular coal area are defined on the fully-mechanized coal mining face; establishing a corresponding relation between the coal machine position data of the coal mining machine and the support number data of the hydraulic support along the fully mechanized coal mining face; when the coal mining machine cuts coal from the normal area to the second triangular coal area, the number of cutting frames of the coal mining machine is obtained by subtracting the maximum value of the support number corresponding to the coal mining machine in the second triangular coal area from the initial value of the support number corresponding to the coal mining machine in the normal area; when the coal mining machine cuts coal from the normal area to the first triangular coal area, the number of cutting frames is obtained by subtracting the minimum value of the support number corresponding to the coal mining machine in the first triangular coal area from the initial value of the support number corresponding to the coal mining machine in the normal area. According to the statistical method for the cutting parameters of the fully mechanized coal mining face, the problems of false alarm and the like existing in manual statistics are avoided, and therefore the accuracy of parameter statistics is effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cutting parameter statistics, and in particular to a statistical method for cutting parameters of a fully mechanized mining face. Background Art

[0002] The statistics of cutting parameters such as the number of cutting knives and cutting frames in the fully-mechanized mining face of a coal mine is also an important part of the construction of an intelligent fully-mechanized mining face. Through data analysis, the intelligent control can be further optimized, and the automation rate and production efficiency can be improved.

[0003] At present, the statistics of cutting parameters are mainly calculated manually by dispatchers and underground production personnel for each shift's cutting parameters. However, the cutting parameters calculated manually are not accurate, have low precision, and are prone to human false alarms, making it difficult to meet the needs of intelligent comprehensive mining. Summary of the invention

[0004] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0005] To this end, the purpose of the present disclosure is to provide a statistical method for cutting parameters of a fully mechanized mining face.

[0006] To achieve the above-mentioned purpose, the present disclosure provides a statistical method for cutting parameters of a comprehensive mining working face, including: defining a first triangular coal area, a normal area, and a second triangular coal area on the comprehensive mining working face; establishing a correspondence between the coal machine position data of the coal mining machine and the support number data of the hydraulic support along the comprehensive mining working face; determining the cutting direction and cutting position of the coal mining machine according to the coal machine position data; when the coal mining machine cuts coal from the normal area to the second triangular coal area, the number of cutting frames of the coal mining machine is the maximum value of the support number corresponding to the coal mining machine in the second triangular coal area minus the initial value of the support number corresponding to the coal mining machine in the normal area; when the coal mining machine cuts coal from the normal area to the first triangular coal area, the number of cutting frames is the initial value of the support number corresponding to the coal mining machine in the normal area minus the minimum value of the support number corresponding to the coal mining machine in the first triangular coal area.

[0007] Optionally, the method also includes: taking the end of the first triangular coal area away from the normal area as the first cutting point, and taking the end of the second triangular coal area away from the normal area as the second cutting point; taking the first cutting point as the starting point and the second cutting point as the end point, establishing a correspondence between the coal machine position data of the coal mining machine and the support number data of the hydraulic support along the comprehensive mining working face.

[0008] Optionally, the method also includes: when the coal machine position data increases successively in the normal area and the second triangular coal area, judging that the coal mining machine cuts coal from the normal area to the second triangular coal area; when the coal machine position data decreases successively in the normal area and the first triangular coal area, judging that the coal mining machine cuts coal from the normal area to the first triangular coal area.

[0009] Optionally, the method also includes: taking the connecting position of the second triangular coal area and the normal area as the inflection point; taking the path of the coal mining machine from the inflection point to the second cutting point for the first time as the first cutting path, and taking the path of the coal mining machine from the second cutting point to the inflection point for the first time as the first inflection path, taking the path of the coal mining machine from the inflection point to the second cutting point for the second time as the second cutting path, and taking the path of the coal mining machine from the second cutting point to the inflection point for the second time as the second inflection path; wherein the coal mining machine cuts the second triangular coal area along the first cutting path, the first inflection path, the second cutting path and the second inflection path in sequence.

[0010] Optionally, the method also includes: when the coal mining machine cuts coal in the second triangular coal area, and the coal mining machine position data increases in the second triangular coal area and subsequently decreases and increases in the second triangular coal area, it is judged that the coal mining machine cuts coal along the first cutting path, and the number of cutting frames is the maximum value of the bracket number corresponding to the coal mining machine in the second triangular coal area minus the initial value of the bracket number corresponding to the coal mining machine in the second triangular coal area.

[0011] Optionally, the method also includes: when the coal mining machine cuts coal in the second triangular coal area, and the coal mining machine position data decreases in the second triangular coal area and subsequently increases and decreases in the second triangular coal area, it is judged that the coal mining machine cuts coal along the first reverse path, and the number of cutting frames is the maximum value of the bracket number corresponding to the coal mining machine in the second triangular coal area minus the minimum value of the bracket number corresponding to the second triangular coal area when the coal mining machine is stopped.

[0012] Optionally, the method also includes: when the coal mining machine cuts coal in the second triangular coal area, and the coal mining machine position data increases in the second triangular coal area and then decreases in the second triangular coal area and in the normal area, it is judged that the coal mining machine cuts coal along the second cutting path, and the number of cutting frames is the maximum value of the bracket number corresponding to the coal mining machine in the second triangular coal area minus the minimum value of the bracket number corresponding to the second triangular coal area when the coal mining machine is stopped.

[0013] Optionally, the method also includes: when the coal mining machine cuts coal in the second triangular coal area, and the coal mining machine position data decreases in the second triangular coal area and subsequently decreases in the normal area, it is judged that the coal mining machine cuts coal along the second reverse path, and the number of cutting frames is the maximum value of the bracket number corresponding to the coal mining machine in the second triangular coal area minus the minimum value of the bracket number corresponding to the second triangular coal area when the coal mining machine is stopped.

[0014] Optionally, the method also includes: when the coal mining machine continues to cut coal in the second triangular coal area, the normal area and the first triangular coal area, and the coal mining machine cuts coal to the first cutting point for the first time, the number of cutting knives of the coal mining machine is increased by one, and the number of cutting frames is set to zero.

[0015] Optionally, the method also includes: when the coal mining machine stops after cutting coal in the normal area and the first triangular coal area and does not cut coal in the second triangular coal area, or when the coal mining machine stops after cutting coal in the normal area and the second triangular coal area and does not cut coal in the first triangular coal area, increasing the number of cutting knives of the coal mining machine by one.

[0016] The technical solution provided by the present disclosure may have the following beneficial effects:

[0017] According to the coal mining machine position data of the coal mining machine, not only the cutting direction and cutting position of the coal mining machine can be obtained, but also the bracket number corresponding to the position of the coal mining machine can be obtained, so as to calculate the number of cutting frames of the coal mining machine according to the cutting direction, cutting position and corresponding bracket number of the coal mining machine. Specifically, when the coal mining machine cuts coal from the normal area to the second triangular coal area, the number of cutting frames of the coal mining machine is the maximum value of the bracket number corresponding to the coal mining machine in the second triangular coal area minus the initial value of the bracket number corresponding to the coal mining machine in the normal area; when the coal mining machine cuts coal from the normal area to the first triangular coal area, the number of cutting frames is the initial value of the bracket number corresponding to the coal mining machine in the normal area minus the minimum value of the bracket number corresponding to the coal mining machine in the first triangular coal area. Therefore, the automatic statistics of the number of cutting frames is realized based on the coal mining machine position data of the coal mining machine, avoiding the problems of false alarms in manual statistics, thereby effectively improving the accuracy of parameter statistics, and thus meeting the needs of intelligent comprehensive mining.

[0018] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present disclosure will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 It is a flow chart of a statistical method for cutting parameters of a fully mechanized mining face proposed in one embodiment of the present disclosure;

[0021] Figure 2 It is a structural schematic diagram of a coal mining machine cutting in a normal area in a statistical method for cutting parameters of a fully mechanized mining face proposed in an embodiment of the present disclosure;

[0022] Figure 3 It is a schematic diagram of the cutting trajectory of the coal mining machine in the statistical method of cutting parameters of the fully mechanized mining working face proposed in one embodiment of the present disclosure;

[0023] Figure 4 It is a structural schematic diagram of a coal mining machine cutting coal along a first cutting path in a second triangular coal area in a statistical method for cutting parameters of a fully mechanized mining face proposed in an embodiment of the present disclosure;

[0024] Figure 5 It is a structural schematic diagram of a coal mining machine cutting coal along a first reverse path in a second triangular coal area in a statistical method for cutting parameters of a fully mechanized mining face proposed in an embodiment of the present disclosure;

[0025] Figure 6 It is a structural schematic diagram of a coal mining machine cutting coal along a second cutting path in a second triangular coal area in a statistical method for cutting parameters of a fully mechanized mining face proposed in an embodiment of the present disclosure;

[0026] Figure 7 It is a structural schematic diagram of a coal mining machine cutting coal along a second reverse path in a second triangular coal area in a statistical method for cutting parameters of a fully mechanized mining face proposed in an embodiment of the present disclosure;

[0027] As shown in the figure: 1. fully mechanized mining face, 11. first triangular coal area, 12. normal area, 13. second triangular coal area, 14. inflection point, 15. first cutting point, 16. second cutting point;

[0028] 2. Coal mining machine, 3. Scraper conveyor, 4. Hydraulic support. DETAILED DESCRIPTION

[0029] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and are not to be construed as limitations of the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0030] like Figure 1 and Figure 2 As shown, the embodiment of the present disclosure proposes a statistical method for cutting parameters of a fully mechanized mining face 1, comprising:

[0031] S1: define the first triangular coal area 11, the normal area 12 and the second triangular coal area 13 on the fully mechanized mining face 1;

[0032] S2: establishing a corresponding relationship between the coal mining machine position data of the coal mining machine 2 and the support number data of the hydraulic support 4 along the fully mechanized mining face 1;

[0033] S3: Determine the cutting direction and cutting position of the coal mining machine 2 according to the coal mining machine position data;

[0034] S4: When the coal mining machine 2 cuts coal from the normal area 12 to the second triangular coal area 13, the number of cutting frames of the coal mining machine 2 is the maximum value of the frame number corresponding to the coal mining machine 2 in the second triangular coal area 13 minus the initial value of the frame number corresponding to the coal mining machine 2 in the normal area 12;

[0035] S5: When the coal mining machine 2 cuts coal from the normal area 12 to the first triangular coal area 11, the number of cutting frames is the initial value of the frame number corresponding to the coal mining machine 2 in the normal area 12 minus the minimum value of the frame number corresponding to the coal mining machine 2 in the first triangular coal area 11.

[0036] It is understandable that, according to the coal mining machine position data of the coal mining machine 2, not only the cutting direction and cutting position of the coal mining machine 2 can be obtained, but also the bracket number corresponding to the position of the coal mining machine 2 can be obtained, so as to calculate the number of cutting frames of the coal mining machine 2 according to the cutting direction, cutting position and corresponding bracket number of the coal mining machine 2. Specifically, when the coal mining machine 2 cuts coal from the normal area 12 to the second triangular coal area 13, the number of cutting frames of the coal mining machine 2 is the maximum value of the bracket number corresponding to the coal mining machine 2 in the second triangular coal area 13 minus the initial value of the bracket number corresponding to the coal mining machine 2 in the normal area 12; when the coal mining machine 2 cuts coal from the normal area 12 to the first triangular coal area 11, the number of cutting frames is the initial value of the bracket number corresponding to the coal mining machine 2 in the normal area 12 minus the minimum value of the bracket number corresponding to the coal mining machine 2 in the first triangular coal area 11. Therefore, the automatic statistics of the number of cutting frames is realized based on the coal mining machine position data of the coal mining machine 2, avoiding the problems of false alarms in manual statistics, thereby effectively improving the accuracy of parameter statistics and meeting the needs of intelligent comprehensive mining.

[0037] It should be noted that when the fully mechanized mining face 1 is cutting, a coal mining machine 2 for cutting coal, a scraper conveyor 3 for conveying materials, a hydraulic support 4 for support, etc. are involved.

[0038] Among them, the coal machine position data of the coal mining machine 2 is used to characterize the position of the coal mining machine 2. Specifically, the coal machine position data can be used to obtain the specific position of the coal mining machine 2 in the comprehensive mining working face 1. For example, the coal machine position data of the coal mining machine 2 can be collected by an encoder or infrared sensor installed on the coal mining machine 2 itself, and there is no limitation to this.

[0039] The support number of the hydraulic support 4 is used to characterize the number of the hydraulic support 4, and since a corresponding relationship is established between the coal machine position data of the coal mining machine 2 and the support number data of the hydraulic support 4, the number of cutting frames of the coal mining machine 2 can be quickly and accurately calculated based on the coal machine position data of the coal mining machine 2 and the support number of the hydraulic support 4.

[0040] When the fully mechanized mining face 1 is cutting, the areas at both ends need to be repeatedly cut and turned back, and triangular areas will be generated during the cutting and turning back process, namely the first triangular coal area 11 and the second triangular coal area 13 located at both ends of the normal area 12.

[0041] The number of cutters for the fully mechanized mining face 1 is defined as follows: the coal mining machine 2 passes through the first triangular coal area 11, the normal area 12, and the second triangular coal area 13 in the fully mechanized mining face 1, and a complete cut is made. Figure 3 As shown, the cutting path abcde is a completed cut, and the cutting path from edfgh is a completed cut, where cdef can also be a complete cut.

[0042] During the cutting process of the coal mining machine 2, there will be many repeated round trip routes, so it is necessary to further refine the calculation of the repeated routes.

[0043] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the method further includes:

[0044] An end of the first triangular coal region 11 away from the normal region 12 is used as a first cutting point 15, and an end of the second triangular coal region 13 away from the normal region 12 is used as a second cutting point 16;

[0045] With the first cutting point 15 as the starting point and the second cutting point 16 as the end point, a corresponding relationship between the coal mining machine position data of the coal mining machine 2 and the support number data of the hydraulic support 4 is established along the fully mechanized mining face 1.

[0046] It can be understood that, with the first cutting point 15 at one end of the first triangular coal area 11 away from the normal area 12 as the starting point, and with the second cutting point 16 at one end of the second triangular coal area 13 away from the normal area 12 as the end point, a correspondence between the coal machine position data of the coal mining machine 2 and the support number data of the hydraulic support 4 is established along the comprehensive mining working face 1, so that the cutting direction of the coal mining machine 2 can be determined by utilizing the increase and decrease of the coal machine position data, and the number of cutting frames of the coal mining machine 2 can be accurately calculated in combination with the corresponding support number during the cutting process of the coal mining machine 2.

[0047] It should be noted that the cutting point refers to the end point of the comprehensive mining working face 1 cut, the first cutting point 15 is located at the end of the first triangular coal area 11 away from the normal area 12, and the second cutting point 16 is located at the end of the second triangular coal area 13 away from the normal area 12.

[0048] Among them, when the coal mining machine 2 cuts along the direction from the first cutting point 15 to the second cutting point 16, the coal mining machine position data is in an increasing state; when the coal mining machine 2 cuts along the direction from the second cutting point 16 to the first cutting point 15, the coal mining machine position data is in a decreasing state.

[0049] Similarly, when the position data of the coal mining machine is in an increasing state, the bracket number data is also in an increasing state; when the position data of the coal mining machine is in a decreasing state, the bracket number data is also in a decreasing state. In other words, as the distance between the coal mining machine 2 and the first cutting point 15 continues to increase, the bracket number corresponding to the coal mining machine 2 is also increasing.

[0050] In some embodiments, the method further comprises:

[0051] When the position data of the coal mining machine increases successively in the normal area 12 and the second triangular coal area 13, it is determined that the coal mining machine 2 cuts coal from the normal area 12 to the second triangular coal area 13;

[0052] When the coal mining machine position data decreases successively in the normal area 12 and the first triangular coal area 11 , it is determined that the coal mining machine 2 cuts coal from the normal area 12 to the first triangular coal area 11 .

[0053] It can be understood that when the coal mining machine position data increases successively in the normal area 12 and the second triangular coal area 13, it indicates that the coal mining machine 2 cuts coal in the direction from the first cutting point 15 to the second cutting point 16 in the normal area 12 and the second triangular coal area 13. Therefore, it can be judged that the coal mining machine 2 cuts coal from the normal area 12 to the second triangular coal area 13, and then the number of cutting frames is accurately obtained according to the cutting direction and cutting position of the coal mining machine 2 and the bracket number data.

[0054] When the coal mining machine position data decreases successively in the normal area 12 and the first triangular coal area 11, it indicates that the coal mining machine 2 cuts coal in the direction from the second cutting point 16 to the first cutting point 15 in both the normal area 12 and the first triangular coal area 11. Therefore, it can be judged that the coal mining machine 2 cuts coal from the normal area 12 to the first triangular coal area 11, and then the cutting frame number is accurately obtained according to the cutting direction and cutting position of the coal mining machine 2 and the bracket number data.

[0055] It should be noted that the calculation of the number of cutting frames of the coal mining machine 2 in the first triangular coal area 11 and the calculation of the number of cutting frames of the coal mining machine 2 in the second triangular coal area 13 are the same except for the different directions of increase and decrease of the coal mining machine position data and the bracket number data.

[0056] like Figure 3 As shown, in some embodiments, the method further includes:

[0057] The connecting position of the second triangular coal area 13 and the normal area 12 is taken as the inflection point 14;

[0058] The path of the coal mining machine 2 from the inflection point 14 to the second cutting point 16 for the first time is taken as the first cutting path, and the path of the coal mining machine 2 from the second cutting point 16 to the inflection point 14 for the first time is taken as the first inflection path, the path of the coal mining machine 2 from the inflection point 14 to the second cutting point 16 for the second time is taken as the second cutting path, and the path of the coal mining machine 2 from the second cutting point 16 to the inflection point 14 for the second time is taken as the second inflection path;

[0059] The coal mining machine 2 cuts the second triangular coal area 13 along the first cutting path, the first reversing path, the second cutting path and the second reversing path in sequence.

[0060] It can be understood that when the coal mining machine 2 cuts from the normal area 12 to the second triangular coal area 13, it cuts along the first cutting path, the first reverse path, the second cutting path and the second reverse path in sequence, thereby completing the coal cutting of the second triangular coal area 13 by repeated two cutting and turning back, and after the coal mining machine 2 completes cutting the second triangular coal area 13, it returns to the normal area 12 again from the second reverse path.

[0061] It should be noted that if Figure 3 As shown, the first cutting path is the path of bc, the first reversing path is the path of cd, the second cutting path is the path of de, and the second reversing path is the path of ed.

[0062] When the number of cutting frames of the coal mining machine 2 is calculated in the first triangular coal area 11 , the inflection point 14 at the position where the first triangular coal area 11 and the normal area 12 are connected may also be introduced.

[0063] like Figure 4 As shown, in some embodiments, the method further includes:

[0064] When the coal mining machine 2 cuts coal in the second triangular coal area 13, and the coal mining machine position data increases in the second triangular coal area 13, and subsequently decreases and increases in the second triangular coal area 13, it is judged that the coal mining machine 2 cuts coal along the first cutting path, and the number of cutting frames is the maximum value of the bracket number corresponding to the coal mining machine 2 in the second triangular coal area 13 minus the initial value of the bracket number corresponding to the coal mining machine 2 in the second triangular coal area 13.

[0065] It can be understood that when the coal mining machine 2 cuts coal in the second triangular coal area 13, and the coal mining machine position data increases in the second triangular coal area 13, and subsequently decreases in the second triangular coal area 13, it indicates that the coal mining machine 2 cuts coal along the first cutting path or along the second cutting path, and, subsequently when the second triangular coal area 13 decreases, the coal mining machine position data increases again in the second triangular coal area 13, thereby accurately judging that the coal mining machine 2 cuts coal along the first cutting path.

[0066] Therefore, by subtracting the initial value of the bracket number corresponding to the coal mining machine 2 in the second triangular coal area 13 from the maximum value of the bracket number corresponding to the coal mining machine 2 in the second triangular coal area 13, the number of cutting frames when the coal mining machine 2 cuts coal in the second triangular coal area 13 can be accurately obtained.

[0067] For example, the maximum value of the support number corresponding to coal mining machine 2 in the second triangular coal area 13 (the support number corresponding to the current position of coal mining machine 2) is 140, and the initial value of the support number corresponding to coal mining machine 2 in the second triangular coal area 13 (the support number corresponding to the initial position of coal mining machine 2) is 130, then the number of cutting frames of coal mining machine 2 is 10.

[0068] like Figure 5 As shown, in some embodiments, the method further includes:

[0069] When the coal mining machine 2 cuts coal in the second triangular coal area 13, and the coal mining machine position data decreases in the second triangular coal area 13, and subsequently increases and decreases in the second triangular coal area 13, it is judged that the coal mining machine 2 cuts coal along the first reverse path, and the number of cutting frames is the maximum value of the bracket number corresponding to the coal mining machine 2 in the second triangular coal area 13 minus the minimum value of the bracket number corresponding to the second triangular coal area 13 when the coal mining machine 2 is stopped.

[0070] It can be understood that when the coal mining machine 2 cuts coal in the second triangular coal area 13, and the coal mining machine position data decreases in the second triangular coal area 13, and subsequently increases in the second triangular coal area 13, it indicates that the coal mining machine 2 cuts coal along the first reverse path or along the second reverse path, and, subsequently when the second triangular coal area 13 increases, the coal mining machine position data decreases again in the second triangular coal area 13, thereby accurately judging that the coal mining machine 2 cuts coal along the first reverse path.

[0071] Therefore, by subtracting the minimum value of the bracket number corresponding to the second triangular coal area 13 when the coal shearer 2 is stopped from the maximum value of the bracket number corresponding to the second triangular coal area 13 of the coal shearer 2, the number of cutting frames when the coal shearer 2 is cutting coal in the second triangular coal area 13 can be accurately obtained.

[0072] For example, the maximum value of the support number corresponding to the coal mining machine 2 in the second triangular coal area 13 (the support number corresponding to the initial position of the coal mining machine 2) is 140, and the minimum value of the support number corresponding to the second triangular coal area 13 when the coal mining machine 2 is stopped (the support number corresponding to the position where the coal mining machine 2 is stopped) is 120, then the number of cutting frames of the coal mining machine 2 is 20.

[0073] like Figure 6 As shown, in some embodiments, the method further includes:

[0074] When the coal mining machine 2 cuts coal in the second triangular coal area 13, and the coal mining machine position data increases in the second triangular coal area 13, and then decreases in the second triangular coal area 13 and decreases in the normal area 12, it is judged that the coal mining machine 2 cuts coal along the second cutting path, and the number of cutting frames is the maximum value of the bracket number corresponding to the coal mining machine 2 in the second triangular coal area 13 minus the minimum value of the bracket number corresponding to the second triangular coal area 13 when the coal mining machine 2 is stopped.

[0075] It can be understood that when the coal mining machine 2 cuts coal in the second triangular coal area 13, and the coal mining machine position data increases in the second triangular coal area 13, and then decreases in the second triangular coal area 13, it indicates that the coal mining machine 2 cuts coal along the first cutting path or along the second cutting path, and, in the subsequent decrease of the second triangular coal area 13, the coal mining machine position data decreases in the normal area 12, thereby accurately judging that the coal mining machine 2 cuts coal along the second cutting path.

[0076] Therefore, by subtracting the minimum value of the bracket number corresponding to the second triangular coal area 13 when the coal shearer 2 is stopped from the maximum value of the bracket number corresponding to the second triangular coal area 13 of the coal shearer 2, the number of cutting frames when the coal shearer 2 is cutting coal in the second triangular coal area 13 can be accurately obtained.

[0077] For example, the maximum value of the support number corresponding to the coal mining machine 2 in the second triangular coal area 13 (the support number corresponding to the position where the coal mining machine 2 is stopped) is 141, and the minimum value of the support number corresponding to the second triangular coal area 13 when the coal mining machine 2 is stopped (the support number corresponding to the initial position of the coal mining machine 2) is 125, then the number of cutting frames of the coal mining machine 2 is 16.

[0078] like Figure 7 As shown, in some embodiments, the method further includes:

[0079] When the coal mining machine 2 cuts coal in the second triangular coal area 13, and the coal mining machine position data decreases in the second triangular coal area 13 and subsequently decreases in the normal area 12, it is judged that the coal mining machine 2 cuts coal along the second reverse path, and the number of cutting frames is the maximum value of the bracket number corresponding to the coal mining machine 2 in the second triangular coal area 13 minus the minimum value of the bracket number corresponding to the second triangular coal area 13 when the coal mining machine 2 is stopped.

[0080] It can be understood that when the coal mining machine 2 cuts coal in the second triangular coal area 13 and the coal mining machine position data decreases in the second triangular coal area 13, it indicates that the coal mining machine 2 cuts coal along the first reverse path or along the second reverse path, and, in the subsequent decrease of the second triangular coal area 13, the coal mining machine position data decreases in the normal area 12, thereby accurately judging that the coal mining machine 2 cuts coal along the second reverse path.

[0081] Therefore, by subtracting the minimum value of the bracket number corresponding to the second triangular coal area 13 when the coal shearer 2 is stopped from the maximum value of the bracket number corresponding to the second triangular coal area 13 of the coal shearer 2, the number of cutting frames when the coal shearer 2 is cutting coal in the second triangular coal area 13 can be accurately obtained.

[0082] For example, the maximum value of the support number corresponding to the second triangular coal area 13 of coal mining machine 2 (the support number corresponding to the initial position of coal mining machine 2) is 138, and the minimum value of the support number corresponding to the second triangular coal area 13 when coal mining machine 2 is stopped (the support number corresponding to the position where coal mining machine 2 is stopped) is 110, then the number of cutting frames of coal mining machine 2 is 28.

[0083] Based on the coal mining machine 2 cutting coal along the first reverse path, the second cutting path and the second reverse path, in some embodiments, the method further includes:

[0084] When the coal mining machine 2 continues to cut coal in the second triangular coal area 13, the normal area 12 and the first triangular coal area 11, and when the coal mining machine 2 cuts coal for the first time to the first cutting point 15, the number of cutting knives of the coal mining machine 2 is increased by one, and the number of cutting frames is set to zero.

[0085] It can be understood that when the coal mining machine 2 continues to cut coal in the second triangular coal area 13, the normal area 12 and the first triangular coal area 11, and the coal mining machine 2 cuts coal to the first cutting point 15 for the first time, it indicates that the coal mining machine 2 has completed the next complete number of cuts after completing the previous complete number of cuts.

[0086] Therefore, when the coal mining machine 2 continues to cut coal in the second triangular coal area 13, the normal area 12 and the first triangular coal area 11, and the coal mining machine 2 cuts coal to the first cutting point 15 for the first time, the number of cutting knives of the coal mining machine 2 is increased by one, thereby realizing accurate statistics of the number of cutting knives of the coal mining machine 2, and the number of cutting frames is set to zero, so that the next number of cutting frames can be accurately calculated.

[0087] In some embodiments, the method further comprises:

[0088] When the coal mining machine 2 stops after cutting coal in the normal area 12 and the first triangular coal area 11 and does not cut coal in the second triangular coal area 13, or when the coal mining machine 2 stops after cutting coal in the normal area 12 and the second triangular coal area 13 and does not cut coal in the first triangular coal area 11, the number of cutting knives of the coal mining machine 2 is increased by one.

[0089] It can be understood that when the coal mining machine 2 stops after cutting coal in the normal area 12 and the first triangular coal area 11, and does not cut coal in the second triangular coal area 13, or when the coal mining machine 2 stops after cutting coal in the normal area 12 and the second triangular coal area 13, and does not cut coal in the first triangular coal area 11, it indicates that the coal mining machine 2 has not completed a full number of cutting knives, and it is therefore deemed to be an added knife process, and the number of cutting knives of the coal mining machine 2 is increased by one.

[0090] It should be noted that, in the description of the present disclosure, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "plurality" is two or more.

[0091] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0092] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0093] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A statistical method for cutting parameters of fully mechanized mining working face, characterized in that: include: Define a first triangular coal area, a normal area, and a second triangular coal area on the fully mechanized mining working face; Establishing a correspondence between the coal mining machine position data of the coal mining machine and the support number data of the hydraulic support along the fully mechanized mining working face; Determining the cutting direction and cutting position of the coal mining machine according to the coal mining machine position data; When the coal mining machine cuts coal from the normal area to the second triangular coal area, the number of cutting frames of the coal mining machine is the maximum value of the frame number corresponding to the coal mining machine in the second triangular coal area minus the initial value of the frame number corresponding to the coal mining machine in the normal area; When the coal mining machine cuts coal from the normal area to the first triangular coal area, the number of cutting frames is the initial value of the bracket number corresponding to the coal mining machine in the normal area minus the minimum value of the bracket number corresponding to the coal mining machine in the first triangular coal area.

2. The statistical method for cutting parameters of fully mechanized mining working face according to claim 1 is characterized in that: The method further comprises: An end of the first triangular coal region away from the normal region is used as a first cutting point, and an end of the second triangular coal region away from the normal region is used as a second cutting point; Taking the first cutting point as the starting point and the second cutting point as the end point, a corresponding relationship between the coal mining machine position data of the coal mining machine and the support number data of the hydraulic support is established along the fully mechanized mining working face.

3. The statistical method for cutting parameters of fully mechanized mining face according to claim 2 is characterized in that: The method further comprises: When the position data of the coal mining machine increases in the normal area and the second triangular coal area in sequence, it is determined that the coal mining machine cuts coal from the normal area to the second triangular coal area; When the coal mining machine position data decreases successively in the normal area and the first triangular coal area, it is determined that the coal mining machine cuts coal from the normal area to the first triangular coal area.

4. The statistical method for cutting parameters of fully mechanized mining working face according to claim 2 is characterized in that: The method further comprises: Taking the connecting position of the second triangular coal area and the normal area as the inflection point; The path of the coal mining machine from the inflection point to the second cutting point for the first time is taken as the first cutting path, and the path of the coal mining machine from the second cutting point to the inflection point for the first time is taken as the first inflection path, the path of the coal mining machine from the inflection point to the second cutting point for the second time is taken as the second cutting path, and the path of the coal mining machine from the second cutting point to the inflection point for the second time is taken as the second inflection path; Wherein, the coal mining machine cuts the second triangular coal area along the first cutting path, the first reverse path, the second cutting path and the second reverse path in sequence.

5. The statistical method for cutting parameters of fully mechanized mining working face according to claim 4 is characterized in that: The method further comprises: When the coal mining machine cuts coal in the second triangular coal area, and the coal mining machine position data increases in the second triangular coal area and subsequently decreases and increases in the second triangular coal area, it is judged that the coal mining machine cuts coal along the first cutting path, and the number of cutting frames is the maximum value of the bracket number corresponding to the coal mining machine in the second triangular coal area minus the initial value of the bracket number corresponding to the coal mining machine in the second triangular coal area.

6. The statistical method for cutting parameters of fully mechanized mining working face according to claim 4 is characterized in that: The method further comprises: When the coal mining machine cuts coal in the second triangular coal area, and the coal mining machine position data decreases in the second triangular coal area and subsequently increases and decreases in the second triangular coal area, it is judged that the coal mining machine cuts coal along the first reverse path, and the number of cutting frames is the maximum value of the bracket number corresponding to the coal mining machine in the second triangular coal area minus the minimum value of the bracket number corresponding to the second triangular coal area when the coal mining machine is stopped.

7. The statistical method for cutting parameters of fully mechanized mining working face according to claim 4 is characterized in that: The method further comprises: When the coal mining machine cuts coal in the second triangular coal area, and the coal mining machine position data increases in the second triangular coal area and then decreases in the second triangular coal area and in the normal area, it is judged that the coal mining machine cuts coal along the second cutting path, and the number of cutting frames is the maximum value of the bracket number corresponding to the coal mining machine in the second triangular coal area minus the minimum value of the bracket number corresponding to the second triangular coal area when the coal mining machine is stopped.

8. The statistical method for cutting parameters of fully mechanized mining working face according to claim 4 is characterized in that: The method further comprises: When the coal mining machine cuts coal in the second triangular coal area, and the coal mining machine position data decreases in the second triangular coal area and subsequently decreases in the normal area, it is judged that the coal mining machine cuts coal along the second reverse path, and the number of cutting frames is the maximum value of the bracket number corresponding to the coal mining machine in the second triangular coal area minus the minimum value of the bracket number corresponding to the second triangular coal area when the coal mining machine is stopped.

9. The statistical method for cutting parameters of fully mechanized mining working face according to claim 6, 7 or 8, characterized in that: The method further comprises: When the coal mining machine continues to cut coal in the second triangular coal area, the normal area and the first triangular coal area, and when the coal mining machine cuts coal to the first cutting point for the first time, the number of cutting knives of the coal mining machine is increased by one, and the number of cutting frames is set to zero.

10. The statistical method for cutting parameters of fully mechanized mining working face according to claim 1, characterized in that: The method further comprises: When the coal mining machine stops after cutting coal in the normal area and the first triangular coal area and does not cut coal in the second triangular coal area, or when the coal mining machine stops after cutting coal in the normal area and the second triangular coal area and does not cut coal in the first triangular coal area, the number of cutting knives of the coal mining machine is increased by one.

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