CN114278291A - Automatic cutting process of coal mine heading machine - Google Patents
Automatic cutting process of coal mine heading machine Download PDFInfo
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- CN114278291A CN114278291A CN202111558270.0A CN202111558270A CN114278291A CN 114278291 A CN114278291 A CN 114278291A CN 202111558270 A CN202111558270 A CN 202111558270A CN 114278291 A CN114278291 A CN 114278291A
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Abstract
The invention relates to the technical field of coal mining, in particular to an automatic cutting process of a coal mine heading machine; the method comprises the following steps: 1) moving the cutting head to the left or right upper corner of the cutting surface, generating a cutting section model by setting the width and height of a roadway and determining a cutting boundary, starting automatic cutting, automatically moving the middle part of the cutting surface to a position about 1m away from the top by the cutting head, feeding in an L shape, and lifting the cutting head to a proper position at the top; 2) if the size of the roadway is smaller than the maximum cutting range of the cutting head, a one-step forming cutting step is adopted, and the cutting head cuts from top to bottom along the S-shaped curve; if the size of the roadway exceeds the maximum cutting range of the cutting head, the forming cutting step is carried out twice, after the heading machine executes the first forming process, the cutting head stops rotating and automatically moves to the other side, the cutting head is positioned once again, and the second forming cutting is executed again. The operation time of the invention is close to the manual operation time, and the operation process of a driver of the heading machine is simplified.
Description
Technical Field
The invention relates to the technical field of coal mining, in particular to an automatic cutting process of a coal mine heading machine.
Background
The traditional coal mine tunneling mode has the following problems: 1) during the coal cutting period of the development machine, a large amount of dust is generated, the sight is fuzzy, and the state of the coal body cannot be judged in time, so the cutting time is long. 2) The generated dust is sucked into the respiratory tract, and the health of miners is seriously influenced. 3) The collapse of coal during the tunneling process can threaten the life of a driver of the tunneling machine. 4) The manual operation of the heading machine is complex, and the section forming condition depends on the operation proficiency and experience of a driver of the heading machine.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides an automatic cutting process of a coal mine heading machine.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: an automatic cutting process of a coal mine heading machine comprises the following steps:
1) moving the cutting head to the left or right upper corner of a cutting surface, generating a cutting section model by setting the width and height of a roadway and determining a cutting boundary, starting automatic cutting, automatically moving the middle part of the cutting surface to a position about 1m away from the top by the cutting head, and lifting the cutting head to a proper position at the top after L-shaped cutting feed is adopted, so as to avoid damaging a supported anchor rod, an anchor cable or a steel belt;
2) if the size of the roadway is smaller than the maximum cutting range of the cutting head, a one-step forming cutting step is adopted, and the cutting head cuts from top to bottom along the S-shaped curve;
if the size of the roadway exceeds the maximum cutting range of the cutting head, a twice forming cutting step is adopted, the cutting head cuts from top to bottom along the S-shaped curve, after the heading machine executes the first forming process, the cutting head stops rotating and automatically moves to the other side, the cutting head is positioned once again, and then the second forming cutting is executed.
Compared with the prior art, the invention has the following beneficial effects:
by adopting the automatic cutting process, 1 row (2 cycles of 0.6m, the size of the cutting section is 5.8m multiplied by 3.8m multiplied by 1.2 m) of cutting can be averagely used for 38.4 minutes (29.9-46.9 minutes), 2 rows (3 cycles of 0.7m, the size of the cutting section is 5.8m multiplied by 3.8m multiplied by 2.1 m) of cutting can be averagely used for 55.15 minutes (42.9-67.4 minutes), 3 rows (4 cycles of 0.7m and 1 cycle of 0.5 m) of cutting can be averagely used for 88.65 minutes (68.9-108.4 minutes), the cutting section size is 5.8m multiplied by 3.8m multiplied by 3.3 m), the time is close to the manual operation time, and the operation procedure of a driver of the heading machine is simplified.
The working environment of the post driver is obviously improved. When a driver of the heading machine cuts coal, the remote controller is remotely operated, so that the driver is far away from a head-on dangerous area, the risk of personal accidents is reduced, and the operating environment of the post driver is optimized. The belt centralized control driver realizes 1 person monitoring of a plurality of devices, and the work efficiency is improved while the operation safety risk is obviously reduced.
Drawings
FIG. 1 is a schematic view of an "L" type feed mode.
FIG. 2 is a schematic view of an S-shaped automatic cutting curve formed in one step.
FIG. 3 is a schematic diagram of an S-shaped automatic cutting curve formed twice.
FIG. 4 is a schematic diagram of the operation flow and time consumption of the two-time forming automatic cutting.
Detailed Description
The present invention is further illustrated by the following specific examples.
Examples
As shown in fig. 4, the invention provides an automatic cutting process of a heading machine, which takes the positioning of a cutting head of the heading machine as a starting mark and the automatic withdrawing and dropping of the cutting head of the heading machine as an ending mark. The method specifically comprises the following steps:
the cutting head is moved to the upper left or right corner of the cutting face as shown in figure 1. And generating a cutting section model by setting the width and the height of the roadway, determining a cutting boundary, and starting automatic cutting. The cutting head automatically moves the position of the middle part of the cutting surface about 1 meter away from the top, and after the L-shaped cutting is adopted, the cutting head is lifted to the proper position of the top, so that the condition that a supported anchor rod, an anchor cable or a steel belt and the like are damaged is avoided.
As shown in fig. 2, if the size of the roadway is set to be smaller than the maximum cutting range of the cutting head, a one-step forming cutting curve is adopted, and the cutting head cuts from top to bottom along the S-shaped curve.
As shown in fig. 3, if the size of the roadway exceeds the maximum cutting range of the cutting head, after the heading machine executes the primary forming process, the cutting head stops rotating and automatically moves to the other side, and the cutting head is positioned again. And then the second time.
As shown in fig. 4, the automatic cutting operation flow of the heading machine is as follows: one-step forming automatic cutting: cutting head positioning, starting second transportation, first transportation, star wheel and high cutting speed, feeding (the feeding amount is a settable parameter), cutting at top, cutting at middle upper part quickly, cutting at bottom at low speed, closing second transportation, first transportation, star wheel and high cutting speed, retreating machine and falling cutting head
And (3) twice forming and automatic cutting: cutting head positioning, two-conveying starting, one-conveying cutting, star wheel cutting at high speed, feeding (the feeding amount can be set), top cutting, middle upper portion fast cutting, bottom slow cutting, cutting head closing, automatic moving machine, cutting head positioning, cutting knife at top (the feeding amount can be set), ⑪ top cutting, ⑫ middle upper portion fast cutting, ⑬ bottom slow cutting, ⑭ cutting, two-conveying cutting, one-conveying cutting, star wheel cutting at high speed, ⑮ withdrawing machine and cutting head dropping.
The fast cutting and the slow cutting are relative concepts, and the cutting speed at the bottom is lower than that at the middle-upper part. The specific cutting speed is set according to the actual situation.
Claims (3)
1. An automatic cutting process of a coal mine heading machine is characterized by comprising the following steps:
1) moving the cutting head to the left or right upper corner of a cutting surface, generating a cutting section model by setting the width and height of a roadway and determining a cutting boundary, starting automatic cutting, automatically moving the middle part of the cutting surface to a position about 1m away from the top by the cutting head, and lifting the cutting head to a proper position at the top after L-shaped cutting feed is adopted, so as to avoid damaging a supported anchor rod, an anchor cable or a steel belt;
2) if the size of the roadway is smaller than the maximum cutting range of the cutting head, a one-step forming cutting step is adopted, and the cutting head cuts from top to bottom along the S-shaped curve;
if the size of the roadway exceeds the maximum cutting range of the cutting head, a twice forming cutting step is adopted, the cutting head cuts from top to bottom along the S-shaped curve, after the heading machine executes the first forming process, the cutting head stops rotating and automatically moves to the other side, the cutting head is positioned once again, and then the second forming cutting is executed.
2. The automatic cutting process of the coal mine heading machine according to claim 1, wherein the one-step forming cutting step in the step 2) comprises the steps of positioning a cutting head, starting a second transportation, a first transportation, a star wheel and a high cutting speed, feeding, performing cutting amount according to set parameters, cutting at the top, cutting at the middle upper part, cutting at the bottom at a low speed, cutting at the middle upper part at a high speed, closing the second transportation, the first transportation, the star wheel and the high cutting speed, retreating the machine and dropping the cutting head.
3. The automatic cutting process of the coal mine heading machine according to claim 1, wherein the two-time forming cutting step in the step 2) comprises the steps of cutting head positioning, cutting head starting, cutting head first, star wheel and cutting high speed, cutting feed, wherein the cutting feed is carried out according to set parameters, cutting top, cutting middle upper part fast cutting, cutting bottom slow cutting, cutting head closing, cutting head automatic moving, cutting head positioning, cutting feed is carried out according to set parameters, cutting top at ⑪, cutting middle upper part fast cutting at ⑫, cutting bottom slow cutting at ⑬, cutting head closing second, cutting head first, star wheel and cutting high speed, cutting head withdrawing and falling at ⑮.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111558270.0A CN114278291A (en) | 2021-12-20 | 2021-12-20 | Automatic cutting process of coal mine heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111558270.0A CN114278291A (en) | 2021-12-20 | 2021-12-20 | Automatic cutting process of coal mine heading machine |
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| Publication Number | Publication Date |
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| CN114278291A true CN114278291A (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111558270.0A Pending CN114278291A (en) | 2021-12-20 | 2021-12-20 | Automatic cutting process of coal mine heading machine |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1376932A (en) * | 1971-11-12 | 1974-12-11 | Coal Industry Patents Ltd | Apparatus for steering a longwall mineral mining machine |
| DE2065716A1 (en) * | 1970-06-06 | 1975-09-25 | Atlas Copco Ab | Tunnel cutting appts - rotating cutting head is alternatively pivoted between two positions to cut tunnel face |
| US4746170A (en) * | 1985-02-20 | 1988-05-24 | Dosco Overseas Engineering Limited | Mining machinery |
| CN103147756A (en) * | 2013-03-20 | 2013-06-12 | 中国矿业大学(北京) | Heading machine memory cutting control system and method thereof |
| CN104329087A (en) * | 2007-08-31 | 2015-02-04 | 乔伊·姆·特拉华公司 | Mining machine with driven disc cutters |
| US20190003304A1 (en) * | 2015-08-25 | 2019-01-03 | Taiyuan University Of Technology | Method for realizing centralized control platform for large fully-mechanized coal mining face equipment |
| CN112983412A (en) * | 2021-03-05 | 2021-06-18 | 中国矿业大学 | Automatic forming cutting motion optimization method for cantilever longitudinal shaft type heading machine section |
-
2021
- 2021-12-20 CN CN202111558270.0A patent/CN114278291A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2065716A1 (en) * | 1970-06-06 | 1975-09-25 | Atlas Copco Ab | Tunnel cutting appts - rotating cutting head is alternatively pivoted between two positions to cut tunnel face |
| GB1376932A (en) * | 1971-11-12 | 1974-12-11 | Coal Industry Patents Ltd | Apparatus for steering a longwall mineral mining machine |
| US4746170A (en) * | 1985-02-20 | 1988-05-24 | Dosco Overseas Engineering Limited | Mining machinery |
| CN104329087A (en) * | 2007-08-31 | 2015-02-04 | 乔伊·姆·特拉华公司 | Mining machine with driven disc cutters |
| CN103147756A (en) * | 2013-03-20 | 2013-06-12 | 中国矿业大学(北京) | Heading machine memory cutting control system and method thereof |
| US20190003304A1 (en) * | 2015-08-25 | 2019-01-03 | Taiyuan University Of Technology | Method for realizing centralized control platform for large fully-mechanized coal mining face equipment |
| CN112983412A (en) * | 2021-03-05 | 2021-06-18 | 中国矿业大学 | Automatic forming cutting motion optimization method for cantilever longitudinal shaft type heading machine section |
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