CN102061915A - Coal mining machine and coal mining machine supporting device - Google Patents
Coal mining machine and coal mining machine supporting device Download PDFInfo
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- CN102061915A CN102061915A CN 201010564185 CN201010564185A CN102061915A CN 102061915 A CN102061915 A CN 102061915A CN 201010564185 CN201010564185 CN 201010564185 CN 201010564185 A CN201010564185 A CN 201010564185A CN 102061915 A CN102061915 A CN 102061915A
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- winning machine
- strutting arrangement
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Abstract
The invention discloses a coal mining machine supporting device comprising a supporting leg (1) and a rolling part (2). The rolling part (2) is dismountably connected with the bottom of the supporting leg (1) and supports the supporting leg (1). By adopting the structure, the coal mining machine supporting device is in rolling contact with a scraper machine when the coal mining machine works underground to lessen the friction with a scraper conveyer so as to prevent the coal mining machine from inclining because of the serious abrasion of the supporting device and enhance the working stability of the coal mining machine. The invention also discloses the coal mining machine comprising a traction part and the coal mining machine supporting device, and the bottom end of the traction part is connected above the supporting leg (1). The coal mining machine has the same technical effect as the coal mining machine supporting device.
Description
Technical field
The present invention relates to the mining machinery technical field, relate in particular to a kind of coal-winning machine bracing or strutting arrangement that is used for coal-winning machine.The invention still further relates to a kind of coal-winning machine that comprises above-mentioned coal-winning machine bracing or strutting arrangement.
Background technology
Mining machinery is the machinery that is directly used in operations such as mineral mining and Fu Xuan, mainly comprises mining machine and benficiation machinery, broadly says, mine locating machinery also belongs to mining machinery.In addition, also use a large amount of cranes, conveyer, ventilation fan and drainage machinery etc. in the mine operation.
Coal-winning machine is most important a kind of in the mining machine, is to realize one of Coal Production mechanization and modern visual plant.Coal-winning machine divides four kinds of sawing formula, planing pattern, drilling formula and milling formulas.
Milling formula coal-winning machine is made up of cut part, power section and traction element.The cutting units branch comprises operating mechanism and reducer; Power section comprises motor and electric control box; Traction element comprises guide slip shoe and road wheel etc., and guide slip shoe provides guiding for coal-winning machine moves in work plane coal mining process, road wheel by and the pin row of drag conveyor between engagement realize the walking of coal-winning machine on conveyer.The lower end of tractive unit is also installed supporting leg usually, and supporting leg is installed on and supports on the piston shoes, and the function that supports piston shoes is to support coal-winning machine, and the assurance coal-winning machine is normally walked.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of the bracing or strutting arrangement of coal-winning machine in the prior art; Fig. 2 is the sectional view of Fig. 1; Simply introduce the defective that these support piston shoes exist in the course of the work below.
As depicted in figs. 1 and 2, this coal-winning machine bracing or strutting arrangement comprise supporting leg 1 ', supporting leg 1 ' the lower end be connected with support piston shoes 2 '.Coal-winning machine when underground work because the support piston shoes 2 of coal-winning machine ' and drag conveyor between sliding friction, cause support piston shoes 2 ' sharp wear, cause coal-winning machine oblique to the rib inclination, thus the stability when having influenced coal-winning machine work.Therefore certain interval of time just needs repairing personnel to the support piston shoes 2 of coal-winning machine ' change, and has increased working strength of workers and cost of production.
The wearing and tearing that slow down piston shoes in the method that supports piston shoes 2 ' bottom welding wear resistance electrode or welding wearing plate have been adopted in present design, but still can not avoid fully having a strong impact on the output of coal-winning machine and the economic benefit in colliery because coal-winning machine supports the situation that piston shoes 2 ' wearing and tearing cause coal-winning machine to tilt.
Therefore how on the basis of existing technology,, improve the structure of coal-winning machine bracing or strutting arrangement, reduce the friction between coal-winning machine bracing or strutting arrangement and drag conveyor, strengthen the job stability of coal-winning machine, be the problem that those skilled in the art need solve at present.
Summary of the invention
Purpose of the present invention aims to provide a kind of coal-winning machine bracing or strutting arrangement, and this coal-winning machine bracing or strutting arrangement can reduce the friction with drag conveyor, strengthens the job stability of coal-winning machine.Another object of the present invention aims to provide a kind of coal-winning machine that comprises above-mentioned coal-winning machine bracing or strutting arrangement.
For solving the problems of the technologies described above, the invention provides a kind of coal-winning machine bracing or strutting arrangement, comprise supporting leg; Described coal-winning machine bracing or strutting arrangement also comprises rolled portion, and described rolled portion is removably connected to the bottom of described supporting leg, and supports described supporting leg.
Preferably, described rolled portion comprises central axis, and the outer cover of described central axis is equipped with rolling bearing, and the outer cover of described rolling bearing is equipped with roller.
Preferably, described coal-winning machine bracing or strutting arrangement also comprises roller stand, and described roller stand is connected in the both sides of described rolled portion; Described rolled portion removably is connected in described supporting leg by described roller stand.
Preferably, described roller stand is provided with exploring block, and described exploring block is removably connected to the medial surface of the close described rolled portion of described roller stand; Described roller is provided with sensor block, and described sensor block is removably connected to the lateral surface of the close described roller stand of described roller.
Preferably, described roller stand also offers oil groove, and the opening of described oil groove is towards the lateral surface away from described rolled portion of described roller stand, and leads to described rolling bearing.
Preferably, the end face of described roller stand also is provided with the jack of vertical direction, and the shape of described jack matches with the shape of described supporting leg.
Preferably, be provided with shock-absorbing sleeve between described rolling bearing and the described roller.
Preferably, described roller external packets is covered with buffer layer.
Preferably, the number of described rolled portion is 4, and the number of described roller stand is 2; And arbitrary described roller stand all removably connects with two described rolled portion.
Coal-winning machine bracing or strutting arrangement provided by the invention comprises supporting leg, also comprises rolled portion, and this rolled portion is removably connected to the bottom of supporting leg, and can support above-mentioned supporting leg.
Adopt such structure, when coal-winning machine during in underground work, shearer hauled-part is arranged on the drag conveyor, above-mentioned rolled portion is rolled with drag conveyor and is contacted, rolling friction replaces the sliding friction in original technology, make the suffered frictional force in bottom of coal-winning machine bracing or strutting arrangement reduce greatly, thereby reduce wearing and tearing, strengthened the job stability of coal-winning machine the coal-winning machine bracing or strutting arrangement.
This shows that above-mentioned coal-winning machine bracing or strutting arrangement can reduce the friction with drag conveyor, thereby avoided coal-winning machine, strengthened the job stability of coal-winning machine owing to the inclination that the bracing or strutting arrangement friction seriously causes.
The present invention also provides a kind of coal-winning machine, comprises tractive unit, and described coal-winning machine also comprises above-mentioned coal-winning machine bracing or strutting arrangement, and the bottom of described tractive unit is connected in the top of described supporting leg.
Because above-mentioned coal-winning machine bracing or strutting arrangement has above-mentioned technique effect, comprises that the coal-winning machine of this coal-winning machine bracing or strutting arrangement also should have identical technique effect, does not repeat them here.
Description of drawings
Fig. 1 is the structural representation of the bracing or strutting arrangement of coal-winning machine in the prior art;
Fig. 2 is the sectional view of Fig. 1;
Fig. 3 is the structural representation of a kind of specific embodiment of coal-winning machine bracing or strutting arrangement provided by the present invention;
Fig. 4 is the sectional view of Fig. 3;
Fig. 5 is the sectional view of a kind of specific embodiment of rolled portion among Fig. 3 and roller stand;
Fig. 6 is the lateral view of Fig. 5;
Fig. 7 is the vertical view of Fig. 5.
Wherein, the corresponding relation between Reference numeral and the component names is among Fig. 1 to Fig. 2:
1 ' supporting leg; 2 ' support piston shoes;
Corresponding relation among Fig. 3 to Fig. 7 between Reference numeral and the component names is:
1 supporting leg; 2 rolled portion; 3 roller stands; 21 central axiss; 22 rolling bearings; 23 rollers; Shock-absorbing sleeve 24; Buffer layer 25; Sliding sleeve 26; 31 exploring blocks; 32 oil grooves; 33 jacks; First through hole 34; Second through hole 35; 231 sensor blocks.
The specific embodiment
Core of the present invention provides a kind of coal-winning machine bracing or strutting arrangement, and this coal-winning machine bracing or strutting arrangement can reduce the frictional force with drag conveyor, strengthens the job stability of coal-winning machine.Another core of the present invention provides a kind of coal-winning machine that comprises above-mentioned coal-winning machine bracing or strutting arrangement.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 3 and Fig. 4, Fig. 3 is the structural representation of a kind of specific embodiment of coal-winning machine bracing or strutting arrangement provided by the present invention; Fig. 4 is the sectional view of Fig. 3.
As shown in Figure 3 and Figure 4, coal-winning machine bracing or strutting arrangement provided by the present invention comprises supporting leg 1 and rolled portion 2, supporting leg 1 is arranged at the lower end of shearer hauled-part, and rolled portion 2 is removably connected to the bottom of this supporting leg 1, and this rolled portion 2 supports the tractive unit of coal-winning machine by supporting leg 1.
Adopt such structure, when coal-winning machine during in underground work, shearer hauled-part is arranged on the drag conveyor, above-mentioned rolled portion 2 is rolled with drag conveyor and is contacted, rolling friction replaces the sliding friction in original technology, makes the suffered frictional force in bottom of coal-winning machine bracing or strutting arrangement reduce greatly, thereby reduces the wearing and tearing to the coal-winning machine bracing or strutting arrangement, strengthen the job stability of coal-winning machine, also reduced cost of production.
This shows that above-mentioned coal-winning machine bracing or strutting arrangement can reduce the friction with drag conveyor, thereby avoided coal-winning machine, strengthened the job stability of coal-winning machine owing to the inclination that the bracing or strutting arrangement serious wear causes.
Need to prove; the foregoing description only limits the agent structure of coal-winning machine bracing or strutting arrangement; concrete structure for the rolled portion 2 of coal-winning machine bracing or strutting arrangement does not limit; every supporting leg 1 and rolled portion 2 of comprising; can reduce the friction between coal-winning machine support portion and the drag conveyor; strengthen the coal-winning machine bracing or strutting arrangement of the job stability of coal-winning machine, all should be in protection scope of the present invention.
The structure of above-mentioned rolled portion 2 can also further be set.
Please refer to Fig. 5, Fig. 5 is the sectional view of a kind of specific embodiment of rolled portion among Fig. 3 and roller stand.
As shown in Figure 5, above-mentioned rolled portion 2 can comprise central axis 21, and the outside of central axis 21 can be set with rolling bearing 22, and the outside of rolling bearing 22 can be set with roller 23.Central axis 21 mainly plays the effect of support frame; Roller 23 is critical pieces that the coal-winning machine bracing or strutting arrangement contacts with drag conveyor, along with the motion of coal-winning machine is rolled on drag conveyor and advanced; Installing rolling bearing 22 between central axis 21 and the roller 23 additional mainly is in order to reduce the friction between central axis 21 and the roller 23, the two better to be relatively rotated.Adopt the form of structure of 2 of more common like this rolled portion, make that also the convenient processing and manufacture of this rolled portion 2 is easy.
In the concrete embodiment of another kind, as shown in Figure 5, this coal-winning machine bracing or strutting arrangement can also comprise roller stand 3, and this roller stand 3 is connected in the both sides of rolled portion 2, and rolled portion 2 removably is connected in supporting leg 1 by this roller stand 3.
Adopt said structure; in the coal-winning machine course of work; roller stand 3 plays the effect of protection roller 23 around roller 23; at utmost reduced the bump of coal cinder to roller 23; avoid the infringement that in the coal-winning machine course of work roller 23 caused; further improve the reliability of coal-winning machine, saved the maintenance time of coal-winning machine.In addition, what the distance of the bottom of above-mentioned roller stand 3 and roller 23 bottoms can be provided with is less, does not collide with the shovel board of drag conveyor in the time of so both can guaranteeing to move, and can remove the float coal on the shovel board again, guarantees that coal-winning machine operates steadily.
Need to prove; the foregoing description is not all done concrete qualification to quantity, rolled portion 2 and the roller stand 3 concrete connected modes of rolled portion 2 and roller stand 3; in fact; the outer setting of every rolled portion 2 has roller stand 3; play the coal-winning machine bracing or strutting arrangement of effect of protection rolled portion 2, all should work as and belong in protection scope of the present invention.
The form of structure of above-mentioned roller stand 3 can also further be set.
Further in the scheme, as shown in Figure 5, roller stand is provided with exploring block 31, and exploring block 31 is removably connected to the medial surface of the close rolled portion 2 of roller stand 3; Roller 23 is provided with sensor block 231, and sensor block 231 is removably connected to the lateral surface of the close roller stand 3 of roller 23.For example, can the magnetic induction probe be installed, magnet be installed in the relevant position of the rolled portion 2 nearer apart from this magnetic induction probe at the medial surface of the close rolled portion 2 of roller stand 3.Adopt such structure, when roller 23 normal rotation, the field signal of magnetic induction probe detection will continue circulation change, and when roller 23 breaks down when no longer rotating, the field signal that the magnetic induction probe detection arrives also no longer changes.Therefore, utilize this magnetic induction sniffer can be easy to judge whether roller 23 is rotating, thereby help the inspection and maintenance of coal-winning machine bracing or strutting arrangement.
Certainly; exploring block 31 in the such scheme is not limited to the magnetic induction probe; sensor block also is not limited to magnet; it for example can also be the infra-red detection device; every medial surface that is installed on roller stand 3; whether can judge roller 23 at the exploring block 31 that rotates, all should work as and belong in protection scope of the present invention.
Please refer to Fig. 6 and Fig. 7, Fig. 6 is the lateral view of Fig. 5; Fig. 7 is the vertical view of Fig. 5.
In the concrete embodiment of another kind, as shown in Figure 6 and Figure 7, above-mentioned roller stand 3 can also offer oil groove 32, and the opening of this oil groove 32 is towards the lateral surface away from rolled portion 2 of roller stand 3, and leads to rolling bearing 22.Utilize this oil groove 32, the attendant of coal-winning machine can be provided with and concentrate oiling that rolling bearing 22 is lubricated, and has increased the operability of this coal-winning machine bracing or strutting arrangement, further strengthens the job stability of coal-winning machine.
Above-mentioned embodiment is not done concrete qualification to the degree of depth and the extension trend of oil groove 32, as Fig. 5, Fig. 6 and shown in Figure 7, this oil groove 32 can at first be opened to central axis 21 along the side surface direction of roller stand 3, along opening to the midpoint of central axis 21, be communicated to the center of rolling bearing 22 at central axis 21 at last in the midpoint of central axis 21 perpendicular to the side surface direction of roller stand 3.Certainly, the extension of this oil groove 32 trend can also be other directions, everyly is opened on the roller stand 3 and is communicated to rolling bearing 22, and the oil groove 32 that can conveniently lubricate is all in protection scope of the present invention.
In embodiment more specifically, above-mentioned roller stand 3 can also offer jack 33, and this jack 33 is arranged at the end face of described roller stand 3, and the size of this jack 33 and shape match with the size and the shape of the supporting leg 1 of coal-winning machine bracing or strutting arrangement.Adopt such structure, when coal-winning machine was worked, above-mentioned supporting leg 1 can be plugged in this jack 33, and it is stable to make that supporting leg 1 cooperates with rolled portion 2 by roller stand 3, had further strengthened the job stability of coal-winning machine.
In another kind of embodiment, can also do further to limit to the internal construction of above-mentioned rolled portion 2.
As shown in Figure 5, can also be provided with shock-absorbing sleeve 24 between above-mentioned rolling bearing 22 and the roller 23.The structure that adopts suit shock-absorbing sleeve 24 is in order to reduce the vibrations between rolling bearing 22 and the roller 23, to prevent because vibrations cause above-mentioned rolled portion 2 job insecurities.
Above-mentioned roller 23 outsides can also be coated with buffer layer 25.Identical with the effect of above-mentioned shock-absorbing sleeve 24, in the roller 23 outside purposes that coat buffer layer 25 also is in order to reduce the vibrations of roller 23 in rotation process, prevent from also can prevent the sharp wear between the shovel board of roller 23 and drag conveyor because vibrations cause roller 23 job insecurity on the shovel board of drag conveyor.
Can be provided with sliding sleeve 26 between 22 on above-mentioned central axis 21 and the rolling bearing.Adopt such design, can reduce the frictional force of central axis 21 and rolling bearing 22, prevent sharp wear between central axis 21 and the rolling bearing 22, make central axis 21 and rolling bearing 22 better rotate.Certainly, do not limit the material of sliding sleeve 26 here, this sliding sleeve 26 can be nylon sliding sleeve 26, rubber sliding sleeve 26 etc., and this sliding sleeve 26 has advantages such as abrasion resistance is good, light weight.
Can also further limit above-mentioned rolled portion 2 and the quantity of roller stand 3 and the connected mode of rolled portion 2 and roller stand 3.
The number of above-mentioned rolled portion 2 can be 4, and the number of roller stand 3 can be 2; As shown in Figure 7, the both sides of roller stand 3 all can offer first through hole 34 of vertical direction, rolled portion 2 is removably installed in first through hole 34 of roller stand 3, and roller stand 3 also offers second through hole 35 at the horizontal fore-and-aft direction of the both sides that rolled portion 2 is installed, the central axis 21 of rolled portion 2 passes second through hole 35, removably connects with roller stand 3.Certainly, this removably connects and can also can connect for other for screw connects.
The lower end of shearer hauled-part has two supporting legs 1, these two supporting legs 1 are plugged in respectively in the jack 33 on two roller stand 3 tops, the lower end that is each supporting leg 1 is separately installed with a roller stand 3, and two rolled portion 2 all are installed in each roller stand 3, and whole the symmetrical distribution.
Like this, when walking on the shovel board of coal-winning machine at drag conveyor, the support coal-winning machine weight that the coal-winning machine bracing or strutting arrangement can be stable, and roll along drag conveyor and to advance, this makes the stress balance of 2 of each rolled portion, thereby has strengthened the job stability of coal-winning machine greatly.
As shown in Figure 3 and Figure 4, the present invention also provides a kind of coal-winning machine, and this coal-winning machine comprises tractive unit, also comprises above-mentioned coal-winning machine bracing or strutting arrangement, and the supporting leg 1 of tractive unit lower end is plugged in the jack 33 on roller stand 3 tops.Because above-mentioned coal-winning machine bracing or strutting arrangement has above-mentioned technique effect, comprises that the coal-winning machine of above-mentioned coal-winning machine bracing or strutting arrangement also has above-mentioned technique effect, does not repeat them here.
More than a kind of coal-winning machine provided by the present invention and coal-winning machine bracing or strutting arrangement thereof are described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. a coal-winning machine bracing or strutting arrangement comprises supporting leg (1); It is characterized in that described coal-winning machine bracing or strutting arrangement also comprises rolled portion (2), described rolled portion (2) is removably connected to the bottom of described supporting leg (1), and supports described supporting leg (1).
2. coal-winning machine bracing or strutting arrangement according to claim 1 is characterized in that, described rolled portion (2) comprises central axis (21), and the outer cover of described central axis (21) is equipped with rolling bearing (22), and the outer cover of described rolling bearing (22) is equipped with roller (23).
3. coal-winning machine bracing or strutting arrangement according to claim 2 is characterized in that, described coal-winning machine bracing or strutting arrangement also comprises roller stand (3), and described roller stand (3) is connected in the both sides of described rolled portion (2); Described rolled portion (2) removably is connected in described supporting leg (1) by described roller stand (3).
4. coal-winning machine bracing or strutting arrangement according to claim 3 is characterized in that, described roller stand (3) is provided with exploring block (31), and described exploring block (31) is removably connected to the medial surface of the close described rolled portion (2) of described roller stand (3); Described roller (23) is provided with sensor block (231), and described sensor block (231) is removably connected to the lateral surface of the close described roller stand (3) of described roller (23).
5. coal-winning machine bracing or strutting arrangement according to claim 3, it is characterized in that, described roller stand (3) also offers oil groove (32), and the opening of described oil groove (32) is towards the lateral surface away from described rolled portion (2) of described roller stand (3), and leads to described rolling bearing (22).
6. coal-winning machine bracing or strutting arrangement according to claim 3 is characterized in that, the end face of described roller stand (3) also is provided with the jack (33) of vertical direction, and the shape of described jack (33) matches with the shape of described supporting leg (1).
7. coal-winning machine bracing or strutting arrangement according to claim 2 is characterized in that, is provided with shock-absorbing sleeve (24) between described rolling bearing (22) and the described roller (23).
8. coal-winning machine bracing or strutting arrangement according to claim 2 is characterized in that, described roller (23) external packets is covered with buffer layer (25).
9. according to each described coal-winning machine bracing or strutting arrangement of claim 1-8, it is characterized in that the number of described rolled portion (2) is 4, the number of described roller stand (3) is 2; And arbitrary described roller stand (3) all removably connects with two described rolled portion (2).
10. a coal-winning machine comprises tractive unit; It is characterized in that described coal-winning machine also comprises each described coal-winning machine bracing or strutting arrangement as claim 1-9, the bottom of described tractive unit is connected in the top of described supporting leg (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010564185 CN102061915A (en) | 2010-11-29 | 2010-11-29 | Coal mining machine and coal mining machine supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010564185 CN102061915A (en) | 2010-11-29 | 2010-11-29 | Coal mining machine and coal mining machine supporting device |
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| Publication Number | Publication Date |
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| CN102061915A true CN102061915A (en) | 2011-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010564185 Pending CN102061915A (en) | 2010-11-29 | 2010-11-29 | Coal mining machine and coal mining machine supporting device |
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| CN (1) | CN102061915A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963371A (en) * | 2012-11-01 | 2013-03-13 | 中国煤炭科工集团太原研究院 | Belt conveyor rigid frame assembly |
| CN103422858A (en) * | 2013-08-08 | 2013-12-04 | 杨立斌 | Sliding shoe anti-abrasion equipment for downhole coal cutter |
| CN103422856A (en) * | 2013-09-05 | 2013-12-04 | 黑龙江科技学院 | Supporting and guiding device of walking unit of coal cutter |
| CN105221147A (en) * | 2015-08-26 | 2016-01-06 | 中国矿业大学 | A kind of coal mining machine supporting device |
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| CN2564753Y (en) * | 2002-08-31 | 2003-08-06 | 宁夏西北奔牛实业集团有限公司 | Rolling self-moving machine tail device for belt conveyor |
| CN201269807Y (en) * | 2008-08-16 | 2009-07-08 | 太原极峰科技有限责任公司 | Rolling bearing monitoring device |
| CN201865669U (en) * | 2010-11-29 | 2011-06-15 | 三一重型装备有限公司 | Coal mining machine and coal mining machine supporter thereof |
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| CN2564753Y (en) * | 2002-08-31 | 2003-08-06 | 宁夏西北奔牛实业集团有限公司 | Rolling self-moving machine tail device for belt conveyor |
| CN201269807Y (en) * | 2008-08-16 | 2009-07-08 | 太原极峰科技有限责任公司 | Rolling bearing monitoring device |
| CN201865669U (en) * | 2010-11-29 | 2011-06-15 | 三一重型装备有限公司 | Coal mining machine and coal mining machine supporter thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963371A (en) * | 2012-11-01 | 2013-03-13 | 中国煤炭科工集团太原研究院 | Belt conveyor rigid frame assembly |
| CN102963371B (en) * | 2012-11-01 | 2015-07-15 | 中国煤炭科工集团太原研究院 | Belt conveyor rigid frame assembly |
| CN103422858A (en) * | 2013-08-08 | 2013-12-04 | 杨立斌 | Sliding shoe anti-abrasion equipment for downhole coal cutter |
| CN103422856A (en) * | 2013-09-05 | 2013-12-04 | 黑龙江科技学院 | Supporting and guiding device of walking unit of coal cutter |
| CN103422856B (en) * | 2013-09-05 | 2016-08-17 | 黑龙江科技学院 | A kind of Walk Part of Shearer supports and guider |
| CN105221147A (en) * | 2015-08-26 | 2016-01-06 | 中国矿业大学 | A kind of coal mining machine supporting device |
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Application publication date: 20110518 |