CN102913243B - Coal excavation apparatus and rocking arm thereof - Google Patents
Coal excavation apparatus and rocking arm thereof Download PDFInfo
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- CN102913243B CN102913243B CN201210356202.0A CN201210356202A CN102913243B CN 102913243 B CN102913243 B CN 102913243B CN 201210356202 A CN201210356202 A CN 201210356202A CN 102913243 B CN102913243 B CN 102913243B
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- rocker arm
- telescopic
- cutting
- adjusting device
- arm
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- 239000003245 coal Substances 0.000 title claims abstract description 54
- 238000009412 basement excavation Methods 0.000 title abstract 3
- 238000005065 mining Methods 0.000 claims description 30
- 230000008859 change Effects 0.000 abstract description 11
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000008602 contraction Effects 0.000 description 4
- 230000008719 thickening Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The invention discloses a kind of coal excavation apparatus and rocking arm thereof, wherein, this rocking arm comprises: cutting arm, extension adjustment device, rocking arm bracket, height-regulating device, wherein, one end of described extension adjustment device is connected to described cutting arm, and the other end is connected to described rocking arm bracket; Described height-regulating device one end is connected with described rocking arm bracket, and the other end is connected to the fuselage of coal excavation apparatus.Therefore, the present invention can adapt to coal seam change by rocking arm flexible, and by the flexible change adapting to coal-winning machine planted agent of rocking arm.
Description
Technical Field
The invention relates to the field of engineering machinery, in particular to coal mining equipment and a rocker arm thereof.
Background
At present, when a coal mining machine normally works and the thickness of a coal seam changes, a rocker arm swings at different angles by the pushing of a heightening oil cylinder, so that the working heights of two rollers of the coal mining machine are correspondingly changed. On the working face under the mine, the thickness of one or more sections of coal seams is increased suddenly, and the rocker arm still cannot reach the height of the coal seam under the condition that the stroke of the oil cylinder is maximum. Therefore, the coal cannot be mined due to the change in the thickness of the coal seam.
In addition, because the bottom plate of the fluctuation coal mining machine is not enough in bedding amount, a rocker arm with a telescopic length is urgently needed to adapt to the change of the coal bed.
Disclosure of Invention
In view of the above, the invention provides coal mining equipment and a rocker arm thereof, which can adapt to the change of the thickness of a coal seam and complete coal mining operation.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
in one aspect, the present invention provides a rocker arm comprising: the cutting device comprises a cutting arm, a telescopic adjusting device, a rocker arm bracket, a height adjusting device, a telescopic sleeve, an inner spline sleeve and an outer spline shaft, wherein one end of the telescopic adjusting device is connected to the cutting arm, and the other end of the telescopic adjusting device is connected to the rocker arm bracket; one end of the height adjusting device is connected with the rocker arm bracket, and the other end of the height adjusting device is connected with a machine body of the coal mining equipment; the telescopic sleeve and the external spline shaft are connected to the cutting arm, and the internal spline sleeve is connected to the rocker arm bracket; the telescopic sleeve is sleeved with the inner spline sleeve, and the inner spline sleeve is in splined connection with the outer spline shaft.
Preferably, in the above device, two telescopic adjusting devices are symmetrically arranged on two sides of the cutting arm and the rocker arm bracket.
Preferably, in the above device, the telescopic adjusting device includes a telescopic cylinder.
More preferably, in the above device, one end of the telescopic oil cylinder is connected to the cutting arm through a pin; the other end of the telescopic oil cylinder is connected with the rocker arm bracket through a pin shaft.
Preferably, in the above device, the height adjusting device includes a height adjusting cylinder.
Preferably, in the above device, one end of the height-adjusting cylinder is rotatably connected to the rocker bracket, and the other end of the height-adjusting cylinder is rotatably connected to the body.
On the other hand, the invention also provides coal mining equipment which is provided with any one of the rocker arms, wherein the cutting arm at one end of the rocker arm is connected with the drum, and the other end of the rocker arm is connected with the machine body.
Compared with the prior art, the coal mining equipment and the rocker arm thereof provided by the invention have the following advantages:
1) the length of the rocker arm can be lengthened and shortened to adapt to the thickening of the coal seam.
2) The bedding amount of the coal mining machine can be increased and reduced according to the actual situation.
Therefore, the invention can adapt to the change of the coal bed through the extension and contraction of the rocker arm and adapt to the change of the lying bottom of the coal mining machine through the extension and contraction of the rocker arm.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment 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 schematic illustration of a rocker arm height adjusted coal mining embodiment of the present invention;
FIG. 2 is a schematic view of a rocker arm bedding coal mining embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of the telescoping structure of the embodiment of the rocker arm of the present invention taken along line A-A of FIG. 1;
FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 1 illustrating an extended state of a telescoping configuration of an embodiment of a rocker arm of the present invention;
description of the reference numerals
1 coal seam
2 rock formation
3 roller
4 cutting arm
5 Telescopic oil cylinder
6 rocker arm bracket
7 heightening oil cylinder
8 telescopic sleeve
9 internal spline housing
10 external spline shaft
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The basic idea of the invention is that: the invention designs coal mining equipment and a rocker arm thereof, wherein the rocker arm is provided with a telescopic structure, and the telescopic structure is used for adjusting the telescopic motion of the rocker arm, so that the coal mining equipment can adapt to the change of a coal bed through the telescopic motion of the rocker arm and adapt to the change of a lying bottom of a coal mining machine through the telescopic motion of the rocker arm.
Preferred embodiments of the present invention will be further described with reference to the accompanying drawings in which:
referring to fig. 1 and 2, there is shown the structure of an embodiment of a rocker arm comprising: cutting arm 4, flexible adjusting device, rocking arm bracket 6, height-adjusting device. One end of the telescopic adjusting device is connected to the cutting arm 4, and the other end of the telescopic adjusting device is connected to the rocker arm bracket 6. One end of the height adjusting device is connected with the rocker arm bracket 6, and the other end of the height adjusting device is connected with a machine body of the coal mining equipment.
As shown in fig. 1, this embodiment can increase or decrease the cutting height H by lengthening or shortening the length of the rocker arm to accommodate the thickening or thinning of the coal seam. That is, when the coal seam becomes thicker, the telescopic adjusting device such as the telescopic oil cylinder 5 is extended, the external spline shaft 10 on the cutting arm 4 moves relatively to the internal spline housing 9, and the cutting height H of the drum 3 connected with the rocker arm is increased. When the coal seam thickness becomes thin, the telescopic oil cylinder 5 is shortened, the external spline shaft 10 on the cutting arm 4 moves relative to the internal spline sleeve 9, and the cutting height H of the roller 3 is reduced.
In addition, the embodiment can also increase or reduce the bedding amount h of the coal mining machine according to the actual situation. That is, as shown in fig. 2, the bedding amount h of the coal mining machine is increased by the extension of the telescopic rocker arm; or the bedding amount h of the coal mining machine is reduced by shortening the telescopic rocker arm.
In a preferred embodiment, as shown in fig. 3, two telescopic adjusting devices are provided, symmetrically arranged on both sides of the cutting arm 4 and the rocker arm bracket 6.
It should be noted that the extension and retraction of the rocker arm may include hydraulic or mechanical actuation. The present embodiment does not limit this.
More preferably, the height-adjusting device may be provided on the coal wall side.
In the above embodiments, the telescopic adjusting device may include a telescopic cylinder 5 and its connecting components with the cutting arm 4 and the rocker arm bracket 6.
For example: one end of the telescopic oil cylinder 5 is fixedly connected or hinged with the cutting arm 4 through a pin shaft. The other end of the telescopic oil cylinder 5 is fixedly connected or hinged with the rocker arm bracket 6 through a pin shaft.
In the above embodiments, the height adjusting device may include a height adjusting cylinder 7 and a connecting component thereof with the rocker arm bracket 6 and the body.
For example: one end of the heightening oil cylinder 7 is rotatably connected with the rocker arm bracket 6 through a pin shaft, and the other end of the heightening oil cylinder is rotatably connected with the machine body through a pin shaft.
Preferably, in each of the above embodiments, the rocker arm further includes: telescopic sleeve 8, internal spline housing 9, external spline shaft 10. Wherein:
the telescopic sleeve 8 and the external spline shaft 10 are connected to the cutting arm 4, and the internal spline sleeve 9 is connected to the rocker arm bracket 6. For example: the telescopic sleeve 8 and the external spline shaft 10 are welded on the cutting arm 4, and the internal spline sleeve 9 is welded on the rocker arm bracket 6.
As shown in fig. 3 and 4, the telescopic sleeve 8 is sleeved with the inner spline sleeve 9, and the inner surface of the telescopic sleeve 8 and the outer surface of the inner spline sleeve 9 are matched with each other by a shaft and a hole, so that the telescopic sleeve has guiding and positioning functions. The inner spline housing 9 is in spline connection with the outer spline shaft 10 and can move axially relative to the outer spline shaft.
For example: when the telescopic oil cylinder 5 is extended, as shown in fig. 4, the external spline shaft 10 on the cutting arm 4 moves outwards relative to the internal spline housing 9, so that the cutting height is increased.
For another example: when the coal seam thickness becomes thinner, the telescopic oil cylinder 5 is shortened, as shown in fig. 3 and 4, the external spline shaft 10 on the cutting arm 4 moves inwards relative to the internal spline housing 9, and the cutting height is reduced.
It should be noted that when the telescopic cylinder 5 is extended to the longest, the rocker arm is also extended to the longest, and at this time, the external spline shaft 10 and the internal spline housing 9 are still in a connected state and are not separated.
It should be noted that, in each of the above embodiments, two pairs of the telescopic sleeves 8, the internal spline sleeves 9, and the external spline shafts 10 may be provided in a matching manner, that is, two sets of the telescopic sleeves 8, the internal spline sleeves 9, and the external spline shafts 10 are respectively provided inside the cutting arm 4 and the rocker arm bracket 6, so as to enhance the mechanical strength of the rocker arm.
As can be seen from the above embodiments, the present invention has the following technical advantages:
(1) the length of the rocker arm can be lengthened and shortened to adapt to the thickening of the coal seam.
(2) The bedding amount of the coal mining machine can be increased and reduced according to the actual situation.
Therefore, the invention can adapt to the change of the coal bed through the extension and contraction of the rocker arm and adapt to the change of the lying bottom of the coal mining machine through the extension and contraction of the rocker arm.
The embodiment of the invention also provides coal mining equipment, such as a coal mining machine, the coal mining equipment is provided with any rocker arm, the cutting arm 4 at one end of the rocker arm is connected with the roller 3, and the other end of the rocker arm is connected with the machine body.
In this embodiment, when the coal mining machine is working normally, the height-adjusting oil cylinder 7 swings the rocker arm to a certain angle, and the drum 3 reaches a certain cutting height.
As shown in fig. 3 and 4, when the coal seam becomes thicker, the telescopic oil cylinder 5 is extended, and the external spline shaft 10 on the cutting arm 4 moves relative to the internal spline housing 9, so that the cutting height of the drum 3 is increased.
As shown in fig. 3 and 4, when the coal seam thickness becomes thin, the telescopic oil cylinder 5 is shortened, and the external spline shaft 10 on the cutting arm 4 moves relative to the internal spline housing 9, so that the cutting height of the drum 3 is reduced.
Any rocker arm has the technical effects, so the coal mining equipment provided with the rocker arm also has the corresponding technical effects, the specific implementation process is similar to that of the embodiment, and the details are not repeated.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A rocker arm, comprising: the cutting arm (4), the telescopic adjusting device, the rocker arm bracket (6), the height adjusting device, the telescopic sleeve (8), the internal spline sleeve (9) and the external spline shaft (10); wherein,
one end of the telescopic adjusting device is connected to the cutting arm (4), and the other end of the telescopic adjusting device is connected to the rocker arm bracket (6);
one end of the height adjusting device is connected with the rocker arm bracket (6), and the other end of the height adjusting device is connected with a machine body of the coal mining equipment;
the telescopic sleeve (8) and the external spline shaft (10) are connected to the cutting arm (4), and the internal spline sleeve (9) is connected to the rocker arm bracket (6);
the telescopic sleeve (8) is sleeved with the inner spline sleeve (9), and the inner spline sleeve (9) is in splined connection with the outer spline shaft (10).
2. The rocker arm of claim 1,
the two telescopic adjusting devices are symmetrically arranged on two sides of the cutting arm (4) and the rocker arm bracket (6).
3. A rocker arm as claimed in claim 1, characterised in that the telescopic adjustment means comprise a telescopic cylinder (5).
4. A rocker arm as claimed in claim 3, characterised in that one end of the telescopic cylinder (5) is connected to the cutting arm (4) by a pin; the other end of the telescopic oil cylinder (5) is connected with the rocker arm bracket (6) through a pin shaft.
5. A rocker arm as claimed in claim 1, characterised in that the step-up means comprise a step-up cylinder (7).
6. The rocker arm according to claim 5, characterized in that the heightening cylinder (7) is rotatably connected at one end to the rocker arm bracket (6) and at the other end to the body.
7. A coal mining device, characterized in that it is provided with a rocker arm according to any one of claims 1 to 6, the cutting arm (4) of which one end is connected to the drum (3) and the other end is connected to the machine body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210356202.0A CN102913243B (en) | 2012-09-24 | 2012-09-24 | Coal excavation apparatus and rocking arm thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210356202.0A CN102913243B (en) | 2012-09-24 | 2012-09-24 | Coal excavation apparatus and rocking arm thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102913243A CN102913243A (en) | 2013-02-06 |
| CN102913243B true CN102913243B (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210356202.0A Active CN102913243B (en) | 2012-09-24 | 2012-09-24 | Coal excavation apparatus and rocking arm thereof |
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| Country | Link |
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| CN (1) | CN102913243B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742137B (en) * | 2013-12-27 | 2016-07-13 | 三一重型装备有限公司 | Rocking arm damping device and coal-winning machine |
| CN105927221B (en) * | 2016-06-01 | 2018-07-03 | 何满潮 | The coal-mining method of telescopic rocker arm, coalcutter and the coalcutter |
| CN110424959B (en) * | 2019-08-15 | 2024-04-02 | 天地科技股份有限公司上海分公司 | Double-stage rocker arm cutting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU502116A1 (en) * | 1974-01-16 | 1976-02-05 | Карагандинский Научно-Исследовательский, Пректно-Конструкторский И Экспериментальный Институт Гипроуглегормаш | The executive body of the tunnel miner |
| US4328996A (en) * | 1979-07-11 | 1982-05-11 | Gebr. Eickhoff Maschinenfabrik Und Eisengiesserei M.B.H. | Cutter drum support arm for longwall mining machine |
| CN102052080A (en) * | 2010-11-26 | 2011-05-11 | 兰海宽 | Mechanical drive dual-disc development device for development machine |
| CN202391426U (en) * | 2011-10-11 | 2012-08-22 | 马晓山 | Up-down swinging propulsion device of rock-roadway tunneling machine |
-
2012
- 2012-09-24 CN CN201210356202.0A patent/CN102913243B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU502116A1 (en) * | 1974-01-16 | 1976-02-05 | Карагандинский Научно-Исследовательский, Пректно-Конструкторский И Экспериментальный Институт Гипроуглегормаш | The executive body of the tunnel miner |
| US4328996A (en) * | 1979-07-11 | 1982-05-11 | Gebr. Eickhoff Maschinenfabrik Und Eisengiesserei M.B.H. | Cutter drum support arm for longwall mining machine |
| CN102052080A (en) * | 2010-11-26 | 2011-05-11 | 兰海宽 | Mechanical drive dual-disc development device for development machine |
| CN202391426U (en) * | 2011-10-11 | 2012-08-22 | 马晓山 | Up-down swinging propulsion device of rock-roadway tunneling machine |
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| Publication number | Publication date |
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| CN102913243A (en) | 2013-02-06 |
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