CN117569805B - Adjustable rocker arm of coal mining machine and use method thereof - Google Patents
Adjustable rocker arm of coal mining machine and use method thereof Download PDFInfo
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- CN117569805B CN117569805B CN202410066202.XA CN202410066202A CN117569805B CN 117569805 B CN117569805 B CN 117569805B CN 202410066202 A CN202410066202 A CN 202410066202A CN 117569805 B CN117569805 B CN 117569805B
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- sprocket
- arm
- rocker arm
- coal
- connecting seat
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- 239000003245 coal Substances 0.000 title claims abstract description 69
- 238000005065 mining Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 5
- 230000008602 contraction Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
Classifications
-
- 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
- E21C25/08—Mountings for the rods or drums
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/08—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for adjusting parts of the machines
Landscapes
- 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)
- Shearing Machines (AREA)
Abstract
The invention belongs to the technical field of coal mining machines, and particularly relates to an adjustable coal mining machine rocker arm and a use method thereof, wherein the adjustable coal mining machine rocker arm comprises a side rocker arm cutting part and a middle rocker arm cutting part, the side rocker arm cutting part is arranged at the end part of a coal mining machine body, the side rocker arm cutting part comprises a rocker arm and a cutting roller, the cutting roller is rotatably arranged at one end of the rocker arm, the other end of the rocker arm is hinged with a connecting seat, and an angle adjusting oil cylinder is arranged between the connecting seat and the rocker arm; the two sides of the connecting seat are provided with connecting components which are connected with the end part of the coal mining machine body; the middle rocker arm cutting part is arranged in the middle of the coal cutter body; the connecting seat is connected with the coal mining machine body through the connecting component, and the first sprocket, the second sprocket and the toothed rail in the connecting component are matched, so that coal between the connecting component and the coal mining machine body is rolled and extruded, and rocker arm movement is prevented from being influenced. The invention is used in the technical field of coal exploitation.
Description
Technical Field
The invention belongs to the technical field of coal mining machines, and particularly relates to an adjustable rocker arm of a coal mining machine and a use method thereof.
Background
The coal mining machine is one of main equipment of fully-mechanized complete equipment, and integrates a large-scale complex system with mechanical, electric and hydraulic functions. The coal mining machine can lighten the physical labor, improve the safety and achieve the purposes of high yield, high efficiency and low consumption.
The invention patent with the application number of 201611235666.0 discloses a large mining height multi-drum shearer for layered mining, wherein two end drums form an adjustable height difference in the advancing direction of the shearer by sliding reciprocally along the advancing direction of the shearer. The middle roller adopts continuous mining type upper and lower rollers, the rotation axis is in the up-down direction, the middle roller can reciprocate along the up-down direction along with the driving of the cantilever by the oil cylinder, the middle coal seam is effectively cut, and the cutting depth is the intermediate value of the cutting depth of the end face of the front roller and the end face of the rear roller. The stair-shaped steps in the pushing direction of the scraper conveyor can be formed in the thick coal seam, and damage of the ledge phenomenon to the fully-mechanized mining face during thick coal seam mining is reduced.
The invention patent with the application number of 201611236462.9 discloses a multi-degree-of-freedom rocker arm coal mining machine and a method thereof, wherein a sliding block of the multi-degree-of-freedom rocker arm coal mining machine is driven by an oil cylinder to slide up and down along a guide rail of a machine body of the coal mining machine, so that a roller is adapted to the change of a coal bed, and therefore, the tail end of the rocker arm has multiple degrees of freedom.
In the two patents, the structure similar to the dovetail groove is adopted, so that the sliding connection between the rocker arm and the machine body is realized, and the rocker arm is driven by the oil cylinder, so that the rocker arm has a displacement function. However, the above-described sliding connection structure arrangement has the following problems: the coal is extremely easy to stay at the sliding connection part of the rocker arm due to the influence of the mining environment of the coal mining machine, and further friction force between the rocker arm and the machine body is increased and even blocked, so that the displacement of the rocker arm is influenced. Therefore, it is necessary to provide a new connecting structure to realize the connection between the rocker arm and the body.
Disclosure of Invention
An aspect of the invention aims to provide an adjustable coal mining machine rocker arm, which can avoid coal retention, can extrude coal at the joint of the rocker arm and a machine body, and ensures that the movement of the rocker arm is not affected; another object of the present invention is to provide a method of using the above rocker arm.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides an adjustable coal-winning machine rocking arm, includes side rocking arm cutting part and well rocking arm cutting part, side rocking arm cutting part sets up the tip at the coal-winning machine organism, side rocking arm cutting part includes rocking arm and cutting drum, cutting drum rotates the setting in the one end of rocking arm, and the other end of rocking arm articulates there is the connecting seat, is equipped with the angle modulation hydro-cylinder between connecting seat and the rocking arm, through the flexible angle modulation between adjusting rocking arm and the connecting seat of angle modulation hydro-cylinder;
the two sides of the connecting seat are provided with connecting components which are connected with the end part of the coal mining machine body; the connecting assembly comprises a first sprocket, a second sprocket and a toothed rail, wherein the first sprocket and the second sprocket are both rotationally connected with the connecting seat, the toothed rail is positioned between the first sprocket and the second sprocket, the first sprocket and the second sprocket are both meshed with the toothed rail, and the toothed rail is fixedly arranged at the end part of the coal mining machine body; a displacement oil cylinder is arranged between the connecting seat and the coal mining machine body, and the connecting seat is driven to move back and forth through the expansion and contraction of the displacement oil cylinder;
the middle rocker arm cutting part is arranged in the middle of the coal cutter body and comprises a connecting arm and a middle cutting roller, and the middle cutting roller is rotationally connected with the connecting arm; the connecting arm is connected with the coal mining machine body through a driving assembly, and the connecting arm is driven to move through the driving assembly.
The first sprocket is provided with two, and the second sprocket is distributed with two first sprockets in a triangle shape.
The first sprocket and the second sprocket are both horizontally arranged.
The connecting assembly further comprises a supporting roller, and the supporting roller is rotationally connected with the connecting seat and is contacted with the outer surface of the toothed rail.
The driving assembly comprises two connecting rods and two driving cylinders, wherein two ends of the two connecting rods are respectively hinged with the connecting arm and the coal mining machine body, and a parallelogram connecting rod mechanism is formed after the two ends of the two connecting rods are hinged with the connecting arm and the coal mining machine body; and two ends of the driving cylinder are respectively hinged with the connecting arm and the coal mining machine body.
The use method comprises the steps that the connecting seat is driven to move back and forth through the expansion and contraction of the displacement oil cylinder, so that the first sprocket and the second sprocket rotate and move along the toothed rail; the first sprocket and the second sprocket are matched with the toothed rail, so that coal between the connecting seat and the coal mining machine body can be extruded; the angle between the rocker arm and the connecting seat is adjusted through the expansion of the angle adjusting oil cylinder, so that the position of the cutting roller is changed.
Compared with the prior art, the invention has the beneficial effects that:
the connecting seat is connected with the coal mining machine body through the connecting component, and the first sprocket, the second sprocket and the toothed rail in the connecting component are matched, so that coal between the connecting component and the coal mining machine body is rolled and extruded, and rocker arm movement is prevented from being influenced. Meanwhile, the structure arrangement of the first sprocket and the second sprocket is adopted, sliding friction is changed into rolling friction, and friction resistance is effectively reduced.
Similarly, the driving assembly adopts a parallelogram link mechanism, so that the phenomenon of movement blockage caused by coal accumulation due to the adoption of a chute is avoided, and the defects in the background technology are overcome; and the height and the front and back positions of the connecting arms can be simultaneously adjusted by the extension and retraction of the driving cylinders. The invention is used in the technical field of coal exploitation.
Drawings
FIG. 1 is a schematic view of the invention in a connected state with a shearer body;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a partial enlarged view at B in FIG. 1;
FIG. 4 is a schematic view of the side swing cutting portion of the present invention in one orientation;
FIG. 5 is a partial enlarged view at C in FIG. 4
FIG. 6 is a schematic view of the side swing cutting portion of the present invention in another orientation;
FIG. 7 is a schematic view of the structure of a rocker arm cutting portion of the present invention;
FIG. 8 is a schematic view of the structure of the support roller of the present invention;
FIG. 9 is a schematic view of the structure in the direction D in FIG. 1;
FIG. 10 is an enlarged partial view at E in 9;
wherein: 1 is a side rocker arm cutting part, 2 is a middle rocker arm cutting part, 3 is a coal mining machine body, 4 is a rocker arm, 5 is a cutting roller, 6 is a connecting seat, 7 is an angle adjusting oil cylinder, 8 is a connecting component, 9 is a first sprocket, 10 is a second sprocket, 11 is a toothed rail, 12 is a displacement oil cylinder, 13 is a connecting arm, 14 is a middle cutting roller, 15 is a driving component, 16 is a supporting roller, 17 is a connecting rod, and 18 is a driving cylinder.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1 to 10, an adjustable shearer swing arm includes a side swing arm cutting portion 1 and a middle swing arm cutting portion 2, the side swing arm cutting portion 1 being provided at an end of a shearer body 3. In actual use, the side rocker arm cutting units 1 are provided in two, respectively at two ends of the shearer body 3 (see fig. 1 for details).
The side rocker arm cutting part 1 comprises a rocker arm 4 and a cutting roller 5, wherein the cutting roller 5 is rotatably arranged at one end of the rocker arm 4, and specifically: the cutting drum 5 is driven in rotation by a cutting motor of the prior art. The other end of the rocker arm 4 is hinged with a connecting seat 6, an angle adjusting oil cylinder 7 is arranged between the connecting seat 6 and the rocker arm 4, two ends of the angle adjusting oil cylinder 7 are respectively hinged with the connecting seat 6 and the rocker arm 4, and the angle between the rocker arm 4 and the connecting seat 6 is adjusted through the expansion and contraction of the angle adjusting oil cylinder 7.
The main improvement of the invention is that the two sides of the connecting seat 6 are provided with connecting components 8, and the two connecting components 8 are connected with the end part of the coal mining machine body 3.
Each connecting component 8 specifically comprises a first sprocket 9, a second sprocket 10 and a toothed rail 11, wherein the toothed rail 11 is fixedly arranged at the end part of the coal cutter body 3, the first sprocket 9 and the second sprocket 10 are both rotationally connected with the connecting seat 6, the toothed rail 11 is positioned between the first sprocket 9 and the second sprocket 10, and the first sprocket 9 and the second sprocket 10 are both meshed with the toothed rail 11, namely, the toothed rail 11 is clamped through the first sprocket 9 and the second sprocket 10.
A displacement oil cylinder 12 is arranged between the connecting seat 6 and the coal cutter body 3, the connecting seat 6 is driven to move back and forth through the expansion and contraction of the displacement oil cylinder 12, and two ends of the displacement oil cylinder 12 are fixedly connected with the connecting seat 6 and the coal cutter body 3 respectively; in the moving process of the connecting seat 6, the first sprocket 9 and the second sprocket 10 can rotate and move along the toothed rail 11, and a plurality of grooves are formed in the toothed rail 11, so that coal between the connecting seat 6 and the coal mining machine body 3 is rolled and extruded, and the problem that the resistance is increased due to retention of the coal is solved. Meanwhile, the first sprocket 9 and the second sprocket 10 are meshed with the toothed rail 11, and compared with the structural arrangement of the dovetail grooves adopted in the background art, the friction force in the running process can be reduced.
The middle rocker arm cutting part 2 is arranged in the middle of the coal cutter body 3 and comprises a connecting arm 13 and a middle cutting roller 14, the middle cutting roller 14 is rotationally connected with the connecting arm 13, and the middle cutting roller 14 is connected with a corresponding motor and is driven to rotate by the motor. The connecting arm 13 is connected with the coal mining machine body 3 through a driving component 15, and the connecting arm 13 is driven to move through the driving component 15.
The structure arrangement adopted by the invention enables the coal mining machine with the rocker arm 4 to realize the layer mining function of a large-mining-height multi-drum coal mining machine (the patent application number is 201611235666.0) for layer mining in the background art, and simultaneously overcomes the structural defects of the large-mining-height multi-drum coal mining machine.
Further, the number of the first sprocket 9 and the second sprocket 10 may be set according to practical situations, and preferably, triangular distribution is adopted, that is, two first sprockets 9 and one second sprocket 10 are provided; of course, other types of distribution may be performed according to actual situations.
Further, the first sprocket 9 and the second sprocket 10 are each preferably arranged horizontally.
In order to further reduce the friction, a support roller 16 is further included in the connection assembly 8, wherein the support roller 16 is rotatably connected with the connection seat 6 and is in contact with the outer surface of the toothed rail 11, i.e. when the connection seat 6 moves, the support roller 16 rotates and moves along the outer surface of the toothed rail 11, thereby preventing the connection seat 6 from generating sliding friction resistance with the outer surface of the toothed rail 11.
Further, a large mining height multi-drum shearer (patent application No. 201611235666.0) for layer mining in the background art is provided with a middle cantilever drum sliding mechanism, and the structure is also a structure arrangement adopting a chute, and also has the defect that the resistance is increased due to accumulation of coal, and the structure arrangement can only adjust the height.
In order to overcome the defects, the invention provides a driving mode, wherein the driving assembly 15 comprises two connecting rods 17 and a driving cylinder 18, the two connecting rods 17 are hinged with the connecting arm 13 and the coal mining machine body 3 respectively, and a parallelogram link mechanism is formed after the two ends of the two connecting rods 17 are hinged; the hinge mode has small friction resistance compared with the connecting mode of the sliding groove. Meanwhile, the structure can simultaneously adjust the height and the front and back positions of the connecting arm 13, and the adjusting range is increased. Specific: both ends of the driving cylinder 18 are respectively hinged with the connecting arm 13 and the shearer body 3, and the position adjustment of the connecting arm 13 and the cutting drum 14 therein can be realized through the extension and retraction of the driving cylinder 18.
Example 2
The present embodiment provides a method of use based on embodiment 1.
The connecting seat 6 is driven to move back and forth through the expansion and contraction of the displacement oil cylinder 12, so that the first sprocket 9 and the second sprocket 10 rotate and move along the toothed rail 11; i.e. the position of the cutting drum 5 in front of and behind, can be adjusted to change the depth of the mining to be performed. The first sprocket 9 and the second sprocket 10 are matched with the toothed rail 11, so that coal between the connecting seat 6 and the coal mining machine body 3 can be extruded, and the running is prevented from being blocked. The angle between the rocker arm 4 and the connecting seat 6 is adjusted through the expansion and contraction of the angle adjusting oil cylinder 7, the height of the cutting drum 5 is changed, and the position to be mined is changed.
The preferred embodiments of the present invention have been described in detail, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention, and the various changes are included in the scope of the present invention.
Claims (5)
1. The utility model provides an adjustable coal-winning machine rocking arm, its characterized in that includes side rocking arm cutting part (1) and well rocking arm cutting part (2), side rocking arm cutting part (1) set up the tip at coal-winning machine organism (3), side rocking arm cutting part (1) include rocking arm (4) and cutting cylinder (5), cutting cylinder (5) rotate and set up in the one end of rocking arm (4), and the other end of rocking arm (4) articulates there is connecting seat (6), is equipped with angle modulation hydro-cylinder (7) between connecting seat (6) and rocking arm (4), through the angle modulation hydro-cylinder (7) flexible angle between adjusting rocking arm (4) and connecting seat (6);
the two sides of the connecting seat (6) are provided with connecting components (8), and the connecting components (8) are connected with the end part of the coal mining machine body (3); the connecting assembly (8) comprises a first sprocket (9), a second sprocket (10) and a toothed rail (11), wherein the first sprocket (9) and the second sprocket (10) are both rotationally connected with the connecting seat (6), the toothed rail (11) is positioned between the first sprocket (9) and the second sprocket (10), the first sprocket (9) and the second sprocket (10) are both meshed with the toothed rail (11), and the toothed rail (11) is fixedly arranged at the end part of the coal mining machine body (3); a displacement oil cylinder (12) is arranged between the connecting seat (6) and the coal cutter body (3), and the connecting seat (6) is driven to move back and forth through the expansion of the displacement oil cylinder (12);
the middle rocker arm cutting part (2) is arranged in the middle of the coal cutter body (3) and comprises a connecting arm (13) and a middle cutting roller (14), and the middle cutting roller (14) is rotationally connected with the connecting arm (13); the connecting arm (13) is connected with the coal mining machine body (3) through a driving assembly (15), and the connecting arm (13) is driven to move through the driving assembly (15);
the driving assembly (15) comprises two connecting rods (17) and two driving cylinders (18), wherein two ends of the two connecting rods (17) are respectively hinged with the connecting arm (13) and the coal mining machine body (3), and a parallelogram connecting rod mechanism is formed after the two connecting rods are hinged; the two ends of the driving cylinder (18) are respectively hinged with the connecting arm (13) and the coal mining machine body (3).
2. An adjustable shearer swing arm as claimed in claim 1, wherein: two first chain teeth (9) are arranged, and the second chain teeth (10) and the two first chain teeth (9) are distributed in a triangular shape.
3. An adjustable shearer swing arm as claimed in claim 1, wherein: the first sprocket (9) and the second sprocket (10) are both horizontally arranged.
4. An adjustable shearer swing arm as claimed in claim 1, wherein: the connecting assembly (8) further comprises a supporting roller (16), and the supporting roller (16) is rotatably connected with the connecting seat (6) and is contacted with the outer surface of the toothed rail (11).
5. A method of use for an adjustable shearer loader swing arm according to claim 1, characterized in that: the connecting seat (6) is driven to move back and forth through the expansion of the displacement oil cylinder (12), so that the first sprocket (9) and the second sprocket (10) rotate and move along the tooth rail (11); the first sprocket (9) and the second sprocket (10) are matched with the toothed rail (11), so that coal between the connecting seat (6) and the coal mining machine body (3) can be extruded; the position of the cutting roller (5) is changed by adjusting the angle between the rocker arm (4) and the connecting seat (6) through the expansion of the angle adjusting oil cylinder (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410066202.XA CN117569805B (en) | 2024-01-17 | 2024-01-17 | Adjustable rocker arm of coal mining machine and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410066202.XA CN117569805B (en) | 2024-01-17 | 2024-01-17 | Adjustable rocker arm of coal mining machine and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117569805A CN117569805A (en) | 2024-02-20 |
| CN117569805B true CN117569805B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410066202.XA Active CN117569805B (en) | 2024-01-17 | 2024-01-17 | Adjustable rocker arm of coal mining machine and use method thereof |
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