CN111206927A - Cutting device of coal mining machine and design method thereof - Google Patents
Cutting device of coal mining machine and design method thereof Download PDFInfo
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- CN111206927A CN111206927A CN201911404389.5A CN201911404389A CN111206927A CN 111206927 A CN111206927 A CN 111206927A CN 201911404389 A CN201911404389 A CN 201911404389A CN 111206927 A CN111206927 A CN 111206927A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 99
- 239000003245 coal Substances 0.000 title claims abstract description 95
- 238000005065 mining Methods 0.000 title claims abstract description 42
- 238000013461 design Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 107
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 238000012360 testing method Methods 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000011156 evaluation Methods 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 1
- 230000009471 action Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
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- 230000008569 process Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
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- 230000005484 gravity Effects 0.000 description 2
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- 238000009825 accumulation Methods 0.000 description 1
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- 239000003638 chemical reducing agent Substances 0.000 description 1
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- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
- E21C25/10—Rods; Drums
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/20—General features of equipment for removal of chippings, e.g. for loading on conveyor
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a cutting device of a coal mining machine and a design method thereof, wherein the device comprises: the coal conveying device comprises a rack, a first driving mechanism, a transmission mechanism, a cutting drum, a shovel plate and a spiral coal conveying mechanism; the first driving mechanism, the transmission mechanism and the cutting drum are arranged on the rack, and the driving mechanism drives the cutting drum to rotate through the transmission mechanism; the shovel plate is arranged on the rack and behind the cutting drum and used for receiving and taking fallen coal; the spiral coal conveying mechanism is arranged on the shovel plate and used for conveying fallen coal backwards. According to the cutting device of the coal mining machine, the shovel plate is arranged, and the spiral coal conveying mechanism is arranged on the shovel plate, so that the coal conveying problem of thin and extremely thin coal seams can be effectively solved, and the cutting device of the coal mining machine can be suitable for digging operation of the thin and extremely thin coal seams. The optimal design method of the cutting device of the coal mining machine can obtain the cutting device of the coal mining machine meeting the requirements.
Description
Technical Field
The invention relates to the technical field of coal mining, in particular to a cutting device of a coal mining machine and a design method thereof.
Background
The roller coal mining machine is a coal mining machine which takes a spiral roller as a working mechanism and realizes coal breakage by a hobbing principle. When the drum rotates at a certain rotating speed, the cutting part is pushed by the pushing arm at the rear part to move forwards at a certain speed, the drum rotates and cuts into the coal wall, the cutting teeth on the drum cut off the coal body from the coal wall, and the broken coal is conveyed out to the goaf side under the action of the conveying device and is conveyed into the scraper conveyor.
The drum shearer in China is rapidly developed after decades, the drum shearer is greatly improved and enhanced in the aspects of structure, traction mode, installed power, reliability, service life and the like, a relatively complete shearer technical research, design, manufacture and test system and a multi-layer development mechanism are formed, standardization, serialization and universalization are basically realized in the development of the shearer, and the shearers mainly solve the mining problem of medium and thick coal seams in China. However, for mining thin and ultra-thin coal seams with the mining height ranging from 0.6 to 1.3 meters, the coal mining machine provided by the prior art has low coal dropping efficiency and cannot be suitable for mining the thin and ultra-thin coal seams.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a cutting device of a coal mining machine and a design method thereof. The specific technical scheme is as follows:
in a first aspect, there is provided a shearer cutting device, the device comprising: the coal conveying device comprises a rack, a first driving mechanism, a transmission mechanism, a cutting drum, a shovel plate and a spiral coal conveying mechanism; the first driving mechanism, the transmission mechanism and the cutting drum are arranged on the rack, and the driving mechanism drives the cutting drum to rotate through the transmission mechanism; the shovel plate is arranged on the rack and behind the cutting drum and used for receiving and taking fallen coal; the spiral coal conveying mechanism is arranged on the shovel plate and used for conveying fallen coal backwards.
In one possible design, the device further comprises a lifting mechanism and a second driving mechanism, one end of the lifting mechanism is hinged to the frame, the other end of the lifting mechanism is connected with the cutting drum, and the second driving mechanism is connected with the lifting mechanism and used for driving the lifting mechanism to lift the cutting drum upwards.
In one possible design, a tilt sensor is arranged on the lifting mechanism, and the tilt sensor and the second driving mechanism are respectively connected with a control unit; and the control unit is used for controlling the second driving mechanism to operate and adjust the lifting mechanism to a target angle according to the angle information detected by the tilt angle sensor.
In one possible design, the cutting drum is of a three-part construction.
In one possible design, the transmission mechanism is a chain wheel and chain track mechanism, the first driving mechanism is a motor, an output shaft of the motor drives a first chain wheel to rotate, a second chain wheel is arranged at the end part of the cutting drum, and the first chain wheel is connected with the second chain wheel through a chain track for linkage.
In one possible design, the cutting drum is detachably connected to the machine frame by means of a quick-connect mechanism.
In one possible design, an air supply mechanism communicated with the first driving part and the second driving part is arranged on the machine frame.
In a second aspect, a method for designing a cutting device of a coal mining machine is provided, the method comprising:
determining parameters of each structure of a cutting device of a coal mining machine; according to the parameters of each structure of the cutting device of the coal mining machine, a matching scheme of the drilling unmanned working equipment is provided; carrying out simulation analysis; according to the parameters of each structure of the cutting device and the matching scheme of the drilling and production unmanned working equipment, the overall matching design of the working surface is completed; and trial-making a prototype, performing evaluation and test, and performing optimization design according to the test result.
The technical scheme of the invention has the following main advantages:
according to the cutting device of the coal mining machine, the shovel plate is arranged, and the spiral coal conveying mechanism is arranged on the shovel plate, so that the coal conveying problem of thin and extremely thin coal seams can be effectively solved, and the cutting device of the coal mining machine can be suitable for digging operation of the thin and extremely thin coal seams. The optimal design method of the cutting device of the coal mining machine can obtain the cutting device of the coal mining machine meeting the requirements.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a front view of a cutting apparatus of a shearer provided in accordance with an embodiment of the present invention;
fig. 2 is a top view of a cutting apparatus of a coal mining machine provided in an embodiment of the present invention;
fig. 3 is a side view of a cutting apparatus of a shearer provided in accordance with an embodiment of the present invention;
fig. 4 is a flowchart of an optimized design method of a cutting device of a coal mining machine according to an embodiment of the present invention.
Description of reference numerals:
1-a frame, 2-a first driving mechanism, 3-a cutting drum, 4-a shovel plate, 5-a spiral coal conveying mechanism, 6-a lifting mechanism, 7-a second driving mechanism, 8-a tilt angle sensor, 9-a quick connecting mechanism and 10-an air supply mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.
In a first aspect, an embodiment of the present invention provides a cutting device of a coal mining machine, as shown in fig. 1 to 3, the device includes: the coal conveying device comprises a frame 1, a first driving mechanism 2, a transmission mechanism, a cutting drum 3, a shovel plate 4 and a spiral coal conveying device. The first driving mechanism 2, the transmission mechanism and the cutting drum 3 are arranged on the frame 1, and the driving mechanism drives the cutting drum 3 to rotate through the transmission mechanism. The shovel plate 4 is arranged on the frame 1 and behind the cutting drum 3 and used for receiving and taking fallen coal. The spiral coal conveying device is arranged on the shovel plate 4 and used for conveying fallen coal backwards.
The working principle of the cutting device of the coal mining machine provided by the embodiment of the invention is explained as follows:
when the coal cutting machine is used, the first driving mechanism 2 drives the cutting drum 3 to rotate through the transmission mechanism, when the cutting drum 3 rotates, the coal blocks are cut off from the coal wall, and the falling coal rotates along with the cutting drum 3 and falls on the shovel plate 4 under the action of gravity when rotating to a preset angle. The shovel plate 4 is provided with a spiral coal conveying mechanism 5, and the coal breakage generated by cutting is continuously conveyed backwards through the spiral coal conveying mechanism 5. It will be appreciated that in the embodiment of the invention, the cutting drum 3 is located at the forwardmost end of the chassis 1, with the direction of advance of the shearer.
Therefore, the cutting device of the coal mining machine provided by the embodiment of the invention can effectively solve the coal transportation problem of thin and ultra-thin coal seams by arranging the shovel plate 4 and arranging the spiral coal conveying mechanism 5 on the shovel plate 4, and can be suitable for excavation operation of the thin and ultra-thin coal seams.
The number of the spiral coal conveying mechanisms 5 is one or two, and can be determined according to the width of the shovel plate 4. For example, if the width of the shovel plate 4 is narrow, only one bolt conveying mechanism is needed to complete the coal breakage transportation operation well. If the width of the shovel plate 4 is large, a plurality of spiral conveying devices can be arranged side by side to avoid the coal accumulation phenomenon. Two spiral coal conveying mechanisms 5 are preferably provided in the embodiment of the present invention.
Further, the shovel plate 4 may be an inclined plate body having a lower height from front to rear so that the falling coal slides rearward under the gravity. Because the shovel plate 4 is positioned at the rear part of the cutting drum 3, the cutting drum 3 rotates anticlockwise and the cutting teeth on the cutting drum 3 face the anticlockwise direction during cutting operation, so that coal falls onto the shovel plate 4 under the driving of the cutting drum 3 to the maximum extent.
Optionally, the cutting device of the coal mining machine provided by the embodiment of the invention further includes a lifting mechanism 6 and a second driving mechanism 7, one end of the lifting mechanism 6 is hinged on the frame 1, the other end of the lifting mechanism is connected with the cutting drum 3, and the second driving mechanism 7 is connected with the lifting mechanism 6 and is used for driving the lifting mechanism 6 to lift the cutting drum 3 upwards. So set up, through the height of 6 adjustment cutting drum 3 of lifting mechanism, can realize the exploitation in the coal seam of different thickness. For example, based on the lifting mechanism 6, the cutting device of the coal mining machine of the embodiment of the invention can mine coal seams with an inclination angle of-20 degrees.
Furthermore, the lifting mechanism 6 is provided with an inclination angle sensor 8, the inclination angle sensor 8 and the second driving mechanism 7 are respectively connected with a control unit, and the control unit is used for controlling the second driving mechanism 7 to operate according to the angle information detected by the inclination angle sensor 8 so as to adjust the lifting mechanism 6 to a target angle. So set up, inclination sensor 8 is used for showing the height of current cutting drum 3 on the one hand, and on the other hand can form closed loop feedback control to cutting drum 3's altitude control again, improves control accuracy.
In order to control the rotation angle of the lifting mechanism 6 conveniently, the second driving part can be a hydraulic cylinder, the cylinder body of the hydraulic cylinder is fixed on the frame 1, and the piston rod is hinged with the lifting mechanism 6. When the hydraulic cylinder acts, the piston rod stretches and retracts to drive the lifting mechanism 6 to move upwards or downwards.
In the embodiment of the invention, the transmission mechanism is a chain wheel and chain track mechanism, the first driving mechanism 2 is a motor, an output shaft of the motor drives a first chain wheel to rotate, the end part of the cutting drum 3 is provided with a second chain wheel, and the first chain wheel and the second chain wheel are linked through chain track connection. So set up, can realize big moment transmission, and the transmission effect is better.
Wherein, the motor can drive the first chain wheel to rotate through mechanisms such as a speed reducer, a gear and the like, and the second chain wheel can be arranged at the end part of the cutting drum 3 or the edge position close to the end part and the like.
In the embodiment of the invention, in order to make the stress of the cutting drum 3 uniform, the number of the first driving parts and the transmission mechanisms is two, and the two driving parts and the two transmission mechanisms are respectively arranged at two sides of the frame 1. The number of the second driving pieces and the lifting mechanisms 6 is two, and the two second driving pieces and the two lifting mechanisms are respectively arranged on two sides of the machine frame 1. Correspondingly, as shown in fig. 2, the cutting drum 3 is of a three-part construction separated by a transmission and a lifting mechanism 6.
Alternatively, in an embodiment of the invention, in order to facilitate quick removal and mounting of the cutting drum 3, the cutting drum 3 is detachably connected to the frame 1 by means of a quick-coupling mechanism 9, as shown in figure 3.
In one possible example, the structure of the quick-connect mechanism 9 is as follows: the cutting drum 3 is vertically connected with an insertion part, the rack 1 or the lifting mechanism 6 is provided with a jack matched with the insertion part, and the insertion part and the jack are provided with corresponding through holes. After the insertion part is inserted into the insertion hole, the through holes are aligned, and the cutting drum 3 can be quickly installed by inserting pin shafts or bolts into the through holes. When the cutting drum is disassembled, the pin shaft or the bolt is pulled out, and the cutting drum 3 can be disassembled.
Optionally, in the cutting device of the coal mining machine provided in the embodiment of the present invention, the frame 1 is provided with an air supply mechanism 10 communicated with the first driving member and the second driving member. So set up, form air cycle in the first driving piece that easily generates heat and second driving piece department, take away the heat, the radiating effect is better to can blow away the gas among the coal mining process, avoid taking place gas explosion phenomenon, and then improve safety in utilization and stability.
In a second aspect, an embodiment of the present invention provides a design method for a cutting device of a coal mining machine, where the method includes:
determining parameters of each structure of a cutting device of a coal mining machine;
according to the parameters of each structure of the cutting device of the coal mining machine, a matching scheme of the drilling unmanned working equipment is provided;
carrying out simulation analysis;
according to the parameters of each structure of the cutting device and the matching scheme of the drilling and production unmanned working equipment, the overall matching design of the working surface is completed;
and trial-making a prototype, performing evaluation and test, and performing optimization design according to the test result.
The design method of the cutting device of the coal mining machine provided by the embodiment of the invention has the following design requirements:
all parts are matched and coordinated with each other, and the requirements of the whole machine process can be met. The whole machine has enough strength, rigidity, stability and shock resistance. The mechanism is compact and the transmission chain is short. Has good disintegration performance, is convenient to mount and dismount, and meets the requirements of well descending and transportation. Saving material as much as possible, facilitating processing and reducing costs. Reasonable overall arrangement, beautiful appearance and convenient operation.
On the premise of meeting the design requirements, the cutting device of the coal mining machine meeting the requirements is obtained through the design process shown in the attached figure 4.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A shearer cutting device, characterized in that the device comprises: the coal conveying device comprises a rack, a first driving mechanism, a transmission mechanism, a cutting drum, a shovel plate and a spiral coal conveying mechanism;
the first driving mechanism, the transmission mechanism and the cutting drum are arranged on the rack, and the driving mechanism drives the cutting drum to rotate through the transmission mechanism;
the shovel plate is arranged on the rack and behind the cutting drum and used for receiving and taking fallen coal;
the spiral coal conveying mechanism is arranged on the shovel plate and used for conveying fallen coal backwards.
2. The shearer cutting device of claim 1, further comprising a lifting mechanism having one end hinged to the frame and the other end connected to the cutting drum, and a second driving mechanism connected to the lifting mechanism for driving the lifting mechanism to lift the cutting drum upward.
3. The cutting device of the coal mining machine according to claim 2, wherein the lifting mechanism is provided with a tilt sensor, and the tilt sensor and the second driving mechanism are respectively connected with a control unit;
and the control unit is used for controlling the second driving mechanism to operate and adjust the lifting mechanism to a target angle according to the angle information detected by the tilt angle sensor.
4. The shearer cutting device of claim 2, wherein the cutting drums are of a three-segment construction.
5. The shearer cutting device of claim 1, wherein the transmission mechanism is a sprocket and chain track mechanism,
the first driving mechanism is a motor, an output shaft of the motor drives a first chain wheel to rotate, a second chain wheel is arranged at the end part of the cutting drum, and the first chain wheel is connected with the second chain wheel through a chain track for linkage.
6. The shearer cutting device of claim 3, wherein the cutting drums are removably connected to the frame by quick-connect mechanisms.
7. The shearer cutting device of claim 2, wherein the frame is provided with an air supply mechanism in communication with the first drive member and the second drive member.
8. A method of designing a cutting assembly of a coal mining machine, the method comprising:
determining parameters of each structure of a cutting device of a coal mining machine;
according to the parameters of each structure of the cutting device of the coal mining machine, a matching scheme of the drilling unmanned working equipment is provided;
carrying out simulation analysis;
according to the parameters of each structure of the cutting device and the matching scheme of the drilling and production unmanned working equipment, the overall matching design of the working surface is completed;
and trial-making a prototype, performing evaluation and test, and performing optimization design according to the test result.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911404389.5A CN111206927B (en) | 2019-12-31 | 2019-12-31 | Cutting device of coal mining machine and design method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911404389.5A CN111206927B (en) | 2019-12-31 | 2019-12-31 | Cutting device of coal mining machine and design method thereof |
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| CN111206927A true CN111206927A (en) | 2020-05-29 |
| CN111206927B CN111206927B (en) | 2022-05-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738355A (en) * | 2021-09-06 | 2021-12-03 | 中国矿业大学 | Thin coal seam mining robot |
| CN113833462A (en) * | 2021-09-06 | 2021-12-24 | 中国矿业大学 | Protective layer mining robot |
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| CN113833462B (en) * | 2021-09-06 | 2023-12-01 | 中国矿业大学 | Protective layer exploitation robot |
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| CN111206927B (en) | 2022-05-10 |
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