CN202031588U - Coal mining machine for long-wall working face - Google Patents
Coal mining machine for long-wall working face Download PDFInfo
- Publication number
- CN202031588U CN202031588U CN2011201403247U CN201120140324U CN202031588U CN 202031588 U CN202031588 U CN 202031588U CN 2011201403247 U CN2011201403247 U CN 2011201403247U CN 201120140324 U CN201120140324 U CN 201120140324U CN 202031588 U CN202031588 U CN 202031588U
- Authority
- CN
- China
- Prior art keywords
- rocking arm
- coal
- forebody
- swing
- rear body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Toys (AREA)
Abstract
The utility model discloses a coal mining machine for a long-wall working face, which comprises a front machine body and a back machine body. The front machine body is provided with a first rocker arm, the back machine body is provided with a second rocker arm, and the front machine body and/or the back machine body are/is provided with a middle rocker arm. Rollers are respectively arranged at the end of each rocker arm. The first rocker arm, the second rocker arm and the middle rocker arm swing on a vertical plane driven by driving elements of their own. The lowest swing point of the rocker arm at the highest swing position is higher than the highest swing position of the rocker arm at the lowest position, and the rocker arm at the middle swing position swings between the lowest swing point and the highest swing point. Accordingly, at least three rollers are arranged on a coal mining face in the same height direction, and the sum of the outer diameters of the three rollers is not smaller than the height of the coal mining face, so that the outer diameters of the rollers are led to be small. Larger mining range in height can be obtained without enlarging the sizes of any of the rollers.
Description
Technical field
The utility model relates to the mining machine technical field, particularly relates to a kind of coal-winning machine that is used for the coal wall exploitation.
Background technology
China is the main producing coal country in the world, the colliery sum surpasses other All Countries colliery number sums of the whole world, fast development along with China's economic construction, coal industry constantly develops towards the direction of mechanization, automation, and comprehensive mechanical coal mining equipment is applied among the coal production of various geological conditionss more and more widely.
Advantages such as the coal wall coal-mining technique is good with its working condition, production efficiency height, become one of most important mode in the coal mining, in the recovery process of coal wall, require its coal-winning machine usually when primary recovery, can finish the broken coal operation on the whole exploitation work plane.
A kind of coal-winning machine that typically is used for coal wall exploitation comprises running part, main body section and is articulated in cutting units on the main body section.Above-mentioned cutting units comprises that further an end is articulated in main body section, and the rocking arm that can rotate around the jointed shaft of itself and main body section, and the other end of rocking arm is equipped with cylinder, and cylinder can rotate on rocking arm, and the periphery of cylinder is provided with some cut teeth.In the course of work of coal-winning machine, set the height of cutting units by the effect of rocking arm, and pass through the rotation realization coal seam cutting of cylinder.This coal-winning machine is provided with two cutting units, and two cutting units are arranged at the homonymy of main body section, and arranges up and down.
But, increase along with seam mining thickness, owing to need satisfy the requirement that when once cutting, realizes the exploitation in full coal seam, the diameter of two cylinders in two cutting units of above-mentioned coal-winning machine should be greater than or equal to the height in coal seam, this just needs to increase the physical dimension of cylinder and rocking arm, to installing and transportation brings difficulty the down-hole of coal-winning machine; Simultaneously, the size of cylinder makes that cut load is bigger after increasing, and the requirement of strength of cylinder increases; In addition, the pivot angle scope of rocking arm needs to increase, for the design and the layout of the pivot angle oil cylinder of rocking arm are brought difficulty.
Therefore, how the increase of cylinder sizes is avoided in the full seam mining requirement when guaranteeing the coal wall exploitation simultaneously, improves the down-hole of coal-winning machine and installs and transport performance, just becomes the problem that those skilled in the art need solve.
The utility model content
The purpose of this utility model provides a kind of coal-winning machine that is used for the coal wall exploitation, it is under the prerequisite that does not increase single cylinder appearance and size, have higher coal mining altitude range, alleviated the load burden of single rocking arm and cylinder simultaneously, have functional reliability preferably.
For solving the problems of the technologies described above, the utility model provides a kind of coal-winning machine that is used for the coal wall exploitation, comprise fuselage, described fuselage comprises forebody and the rear body that flexibly connects with described forebody, be hinged with first rocking arm on the described forebody, the end of described first rocking arm is rotatably connected to first cylinder, is hinged with second rocking arm on the described rear body, and the end of described second rocking arm is rotatably connected to second tin roller;
Also comprise the intermediate rockers that is installed on in described forebody and the described rear body at least one, the end of described intermediate rockers is rotatably connected to intermediate calender rolls;
Described first cylinder, described second tin roller and described intermediate calender rolls three's external diameter sum is greater than or equal to by the height of exploitation work plane;
Described first rocking arm, described second rocking arm and described intermediate rockers are swung on perpendicular under the effect of separately dynamical element respectively, and the minimum pendulum point that is in the high-order rocking arm of swing in three rocking arms is higher than the highest pendulum point of the rocking arm that is in the swing low level, and the hunting range that is in the rocking arm of swinging meta is between described minimum pendulum point and the highest described pendulum point.
Preferably, described first rocking arm is to be in the high-order rocking arm of described swing, and described second rocking arm is the rocking arm that is in described swing low level, and described intermediate rockers is the rocking arm that is in described swing meta.
Preferably, described dynamical element comprises first oscillating oil cylinder that drives described first rocking arm swing, with second oscillating oil cylinder that drives described second rocking arm swing, described first oscillating oil cylinder the position on the described forebody be positioned at described first rocking arm above, described second oscillating oil cylinder the position on the described rear body be positioned at described second rocking arm below.
Preferably, described first rocking arm is positioned at the front end of described forebody, and described second rocking arm is positioned at the end of described rear body.
Preferably, described intermediate rockers is positioned at the end of described forebody.
Preferably, described intermediate rockers comprises and is installed on the preceding intermediate rockers on the described forebody and is installed on back intermediate rockers on the described rear body; The number of described intermediate calender rolls is two, and the end of described preceding intermediate rockers and described back intermediate rockers is rotatably connected to an intermediate calender rolls respectively.
Preferably, be rotationally connected by universal joint between described forebody and the described rear body.
Preferably, has predetermined axial distance between the front end of the end of described forebody and described rear body.
A kind of coal-winning machine that is used for the coal wall exploitation provided by the utility model, comprise fuselage, described fuselage comprises forebody and the rear body that flexibly connects with described forebody, be hinged with first rocking arm on the described forebody, the end of described first rocking arm is rotatably connected to first cylinder, be hinged with second rocking arm on the described rear body, the end of described second rocking arm is rotatably connected to second tin roller; Also comprise the intermediate rockers that is installed on in described forebody and the described rear body at least one, the end of described intermediate rockers is rotatably connected to intermediate calender rolls; Described first cylinder, described second tin roller and described intermediate calender rolls three's external diameter sum is greater than or equal to by the height of exploitation work plane; Described first rocking arm, described second rocking arm and described intermediate rockers are swung on perpendicular under the effect of separately dynamical element respectively, and the minimum pendulum point that is in the high-order rocking arm of swing in three rocking arms is higher than the highest pendulum point of the rocking arm that is in the swing low level, and the hunting range that is in the rocking arm of swinging meta is between described minimum pendulum point and the highest described pendulum point.Like this, on the coal face on the short transverse, be provided with three cylinders at least, the height that the summation of the external diameter of three cylinders is greater than or equal to coal face gets final product, thereby make the external diameter of cylinder can do lessly, under the condition that does not increase single cylinder appearance and size, can obtain bigger exploitation altitude range, the load burden of strong single rocking arm and cylinder has improved the functional reliability of equipment.
Description of drawings
Fig. 1 is the structural representation that is used for a kind of specific embodiment of coal-winning machine of coal wall exploitation provided by the utility model;
Fig. 2 is the structural representation of the another kind of specific embodiment of coal-winning machine of coal wall provided by the utility model exploitation.
The specific embodiment
Core of the present utility model provides a kind of coal-winning machine that is used for the coal wall exploitation, it is under the prerequisite that does not increase single cylinder appearance and size, have higher coal mining altitude range, alleviated the load burden of single rocking arm and cylinder simultaneously, have functional reliability preferably.
In order to make those skilled in the art person understand the utility model scheme better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1, Fig. 1 is the structural representation that is used for a kind of specific embodiment of coal-winning machine of coal wall exploitation provided by the utility model.
The coal-winning machine that is used for the coal wall exploitation provided by the utility model comprises fuselage 1, a plurality of rocking arm and is installed in the cylinder of each rocking arm end respectively that described fuselage 1 comprises forebody 11 and is installed on the rear body 12 of forebody 11 ends.
In first kind of specific embodiment, forebody 11 and rear body 12 are split type structure, just forebody 11 and rear body 12 flexibly connect; rocking arm comprises first rocking arm 21, second rocking arm 22 and intermediate rockers 23; first rocking arm 21 is articulated on the described forebody 11, and the end of first rocking arm 21 is rotatably connected to first cylinder 31; Second rocking arm 22 is articulated on the rear body 12, and the end of second rocking arm 22 is rotatably connected to second tin roller 32; Intermediate rockers 23 is installed among both at least one of forebody 11 and rear body 12, and the end of intermediate rockers 23 is rotatably connected to intermediate calender rolls 33; Described first cylinder 31, described second tin roller 32 are greater than or equal to by the height of exploitation work plane with described intermediate calender rolls 33 threes' external diameter sum; Described first rocking arm 21, described second rocking arm 22 and described intermediate rockers 23 are swung on perpendicular under the effect of separately dynamical element respectively, and the minimum pendulum point that is in the high-order rocking arm of swing in three rocking arms is higher than the highest pendulum point of the rocking arm that is in the swing low level, and the hunting range that is in the rocking arm of swinging meta is between described minimum pendulum point and the highest described pendulum point.
It is pointed out that ordinal numbers such as " first, second " described in the literary composition only is in order to distinguish the different component of same names, to should not be construed as certain order.
Above-mentioned first rocking arm 21, second rocking arm 22 and intermediate rockers 23 are in a swing high position, swing meta and swing low level respectively, specifically be which rocking arm is in a swing high position, which rocking arm is in the swing meta, and which rocking arm is in the qualification that the swing low level should not be subjected to the utility model specific embodiment.Particularly, can make first rocking arm 21 for being in the high-order rocking arm of described swing, second rocking arm 22 is for being in the rocking arm of described swing low level, and intermediate rockers 23 is for being in the rocking arm of described swing meta; Also can make first rocking arm 21 for being in the rocking arm of swing meta, second rocking arm 22 is for being in the rocking arm of swing low level, and intermediate rockers 23 is for being in the forms such as rocking arm of swing meta.
Like this, on the coal face on the short transverse, be provided with three cylinders at least, the height that the summation of the external diameter of three cylinders is greater than or equal to coal face gets final product, thereby make the external diameter of cylinder can do lessly, under the condition that does not increase single cylinder appearance and size, can obtain bigger exploitation altitude range, the load burden of strong single rocking arm and cylinder has improved the functional reliability of equipment.
Dynamical element comprises first oscillating oil cylinder 41, second oscillating oil cylinder 42 and middle oscillating oil cylinder 43, wherein first oscillating oil cylinder 41 is used to drive 21 swings of first rocking arm, second oscillating oil cylinder 42 is used to drive 22 swings of second rocking arm, first oscillating oil cylinder 41 the position on the described forebody 11 be positioned at described first rocking arm 21 above, second oscillating oil cylinder 42 the position on the described rear body 12 be positioned at described second rocking arm 22 below, so that under the prerequisite that satisfies each rocking arm pendulum angle, reduce the load of oil cylinder, improve the rationally distributed property of oil cylinder.Oscillating oil cylinder is used to drive intermediate rockers 23 in the middle of above-mentioned, and this centre oscillating oil cylinder can be positioned at rocking arm above position on the fuselage in the position on the fuselage.
Each oil cylinder also is not limited to above-mentioned location arrangements mode, as long as make each oil cylinder can control the pivot angle scope that corresponding rocking arm reaches appointment respectively, qualification is not done at this in the position that specifically is provided with of each oil cylinder.
Above-mentioned first rocking arm 21 is positioned at the front end of described forebody 11, and second rocking arm 22 is positioned at the end of described rear body 12; Apparently, also first rocking arm 21 can be arranged at other positions of forebody 11, second rocking arm 22 be arranged at other positions of rear body 12.Intermediate rockers 23 can be positioned at the end of described forebody 11, also can be positioned at the front end of rear body 12.
Coal-winning machine provided by the utility model also is not limited to the form of above-mentioned three rocking arms, three cylinders, and it also can further increase the number of rocking arm and cylinder.For example, intermediate rockers 23 comprises and is installed on the preceding intermediate rockers 23 on the described forebody 11 and is installed on back intermediate rockers 23 on the described rear body 12; The number of described intermediate calender rolls 33 is two, and the end of described preceding intermediate rockers 23 and described back intermediate rockers 23 is rotatably connected to an intermediate calender rolls 33 respectively.
When coal-winning machine is arranged to four rocking arms, four cylinders, also be not limited to above-mentioned specific constructive form, it also can be other structures.For example, can increase the number of first rocking arm 21 and second rocking arm 22, the number that order is installed in first rocking arm 21 of forebody 11 front ends is two, the number that is installed in second rocking arm 22 of rear body 12 rear ends simultaneously also is two, end at each rocking arm is rotatably connected to cylinder respectively, at this moment, intermediate rockers 23 can be set, promptly can realize the form of structure of four rocking arms, four cylinders.
Theoretically, in the structure of twin fuselage, also be not limited to the form that three rocking arms, three cylinders or four rocking arms, four cylinders are set, also can be provided with more a plurality of cylinders, form of five rocking arms, five cylinders etc. for example, five rocking arms the position being set can having multiplely on fuselage is greater than or equal to the exploitation height as long as can guarantee the external diameter summation of five cylinders, and can makes the position of cylinder realize that smoothly the full face exploitation gets final product.
Be rotationally connected by universal joint 5 between above-mentioned forebody 11 and the rear body 12, particularly, be separately installed with link on mmi machine body 11 and the rear body 12, the form that the employing universal joint 5 of two links connects is rotationally connected, cooperate with engaging lug by the cross connector, can realize freely rotating of two different directions, working condition requirement when satisfying fluctuating of work plane base plate and coal-winning machine by the drag conveyor bending section, simultaneously linkage section can be realized the action that pushes away, draw, guarantee that a fuselage can drive another fuselage operation, realizes the redundant configuration requirement of complete machine traction.
Have predetermined axial distance between the end of the forebody 11 that connects by universal joint 5 and the front end of rear body 12, this has improved its coal breakage performance with regard to for coal-winning machine is provided with enough coal breakage spaces.
Above-mentioned forebody 11 and rear body 12 also are not limited to split type structure, and forebody 11 and rear body 12 also can be as a whole, and at this moment, forebody 11 and rear body 12 form integral body, and also promptly this coal-winning machine is a unit body coal-winning machine.
When coal-winning machine is unit body coal-winning machine, also can be at the rocking arm and the cylinder that are provided with respectively on the fuselage more than three or three, the be provided with position of each rocking arm on fuselage can be with reference to the set-up mode of above each embodiment, as long as can realize the full face exploitation of coal-winning machine.Apparently, each cylinder also should satisfy the requirement that the external diameter summation is greater than or equal to the production face height.
Please refer to Fig. 2, Fig. 2 is the structural representation of the another kind of specific embodiment of coal-winning machine of coal wall provided by the utility model exploitation.
In above-mentioned each specific embodiment, first rocking arm 21 all is not limited to the form that only comprises a rocking arm, first rocking arm 21 can comprise two rocker structures, particularly, first rocking arm 21 can comprise first upper rocker arm 111 that is positioned at forebody 11 preceding upper ends, with first lower shake-changing arm 112 that is positioned at forebody 11 lower ends, the end of two rocking arms has cylinder separately respectively, promptly the end of first upper rocker arm 111 end that is rotatablely equipped with cylinder 211, the first lower shake-changing arms 112 on first is rotatablely equipped with first bottom roll 212.The condition that the hunting range of first upper rocker arm 111 and first lower shake-changing arm 112 should satisfy is, the highest pendulum point of first upper rocker arm 111 is not less than the highest pendulum point of first rocking arm 21, and the minimum pendulum point of first lower shake-changing arm 112 is not higher than the minimum pendulum point of first rocking arm 21.
Apparently, above-mentioned first rocking arm 21 also is not limited to the form that comprises a rocking arm or two rocking arms, and theoretically, first rocking arm 21 also can comprise the more rocker structure of more piece.
Correspondingly, above-mentioned second rocking arm 22 all can comprise two rocker structures, particularly, second rocking arm 22 can comprise second upper rocker arm 121 that is positioned at upper end, rear body 12 back, with second lower shake-changing arm 122 that is positioned at rear body 12 posterior ends, the end of two rocking arms has cylinder separately respectively, and promptly the end of second upper rocker arm 121 end that is rotatablely equipped with cylinder 221, the second lower shake-changing arms 122 on second is rotatablely equipped with second bottom roll 222.
When first rocking arm 21 and second rocking arm 22 are above-mentioned concrete structure, also intermediate calender rolls 33 can be installed on the fuselage, at this moment, the hunting range of four rocking arms need satisfy the requirement of full seam mining.
It is pointed out that the number and the position of rocking arm only mentioned in many places in the literary composition in order to narrate conveniently, but, technology general knowledge according to this area should be understood that the end of each rocking arm all is rotatably connected to cylinder, and the number of cylinder should equate with the number of rocking arm.
More than a kind of coal-winning machine that is used for coal wall exploitation provided by the utility model is described in detail.Used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (8)
1. a coal-winning machine that is used for the coal wall exploitation comprises fuselage, it is characterized in that,
Described fuselage (1) comprises forebody (11) and the rear body (12) that flexibly connects with described forebody (11), be hinged with first rocking arm (21) on the described forebody (11), the end of described first rocking arm (21) is rotatably connected to first cylinder (31), be hinged with second rocking arm (22) on the described rear body (12), the end of described second rocking arm (22) is rotatably connected to second tin roller (32);
Also comprise the intermediate rockers (23) that is installed among both at least one of described forebody (11) and described rear body (12), the end of described intermediate rockers (23) is rotatably connected to intermediate calender rolls (33);
Described first cylinder (31), described second tin roller (32) are greater than or equal to by the height of exploitation work plane with described intermediate calender rolls (33) three's external diameter sum;
Described first rocking arm (21), described second rocking arm (22) and described intermediate rockers (23) are swung on perpendicular under the effect of separately dynamical element respectively, and the minimum pendulum point that is in the high-order rocking arm of swing in three rocking arms is higher than the highest pendulum point of the rocking arm that is in the swing low level, and the hunting range that is in the rocking arm of swinging meta is between described minimum pendulum point and the highest described pendulum point.
2. the coal-winning machine that is used for the coal wall exploitation according to claim 1, it is characterized in that, described first rocking arm (21) is for being in the high-order rocking arm of described swing, described second rocking arm (22) is for being in the rocking arm of described swing low level, and described intermediate rockers (23) is for being in the rocking arm of described swing meta.
3. the coal-winning machine that is used for the coal wall exploitation according to claim 2, it is characterized in that, described dynamical element comprises first oscillating oil cylinder (41) that drives described first rocking arm (21) swing, with second oscillating oil cylinder (42) that drives described second rocking arm (22) swing, the position of described first oscillating oil cylinder (41) on described forebody (11) is positioned at the top of described first rocking arm (21), and the position of described second oscillating oil cylinder (42) on described rear body (12) is positioned at the below of described second rocking arm (22).
4. the coal-winning machine that is used for the coal wall exploitation according to claim 3 is characterized in that described first rocking arm (21) is positioned at the front end of described forebody (11), and described second rocking arm (22) is positioned at the end of described rear body (12).
5. the coal-winning machine that is used for the coal wall exploitation according to claim 4 is characterized in that described intermediate rockers (23) is positioned at the end of described forebody (11).
6. according to each described coal-winning machine that is used for the coal wall exploitation of claim 1 to 5, it is characterized in that, described intermediate rockers (23) comprises the preceding intermediate rockers (23) that is installed on the described forebody (11) and is installed on back intermediate rockers (23) on the described rear body (12); The number of described intermediate calender rolls (33) is two, and the end of described preceding intermediate rockers (23) and described back intermediate rockers (23) is rotatably connected to an intermediate calender rolls (33) respectively.
7. according to each described coal-winning machine that is used for the coal wall exploitation of claim 1 to 5, it is characterized in that, be rotationally connected by universal joint (5) between described forebody (11) and the described rear body (12).
8. according to each described coal-winning machine that is used for the coal wall exploitation of claim 1 to 5, it is characterized in that having predetermined axial distance between the front end of the end of described forebody (11) and described rear body (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201403247U CN202031588U (en) | 2011-05-05 | 2011-05-05 | Coal mining machine for long-wall working face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201403247U CN202031588U (en) | 2011-05-05 | 2011-05-05 | Coal mining machine for long-wall working face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202031588U true CN202031588U (en) | 2011-11-09 |
Family
ID=44893890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201403247U Expired - Fee Related CN202031588U (en) | 2011-05-05 | 2011-05-05 | Coal mining machine for long-wall working face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202031588U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213092A (en) * | 2011-05-05 | 2011-10-12 | 三一重型装备有限公司 | Coal mining machine for coal wall mining |
| CN103742137A (en) * | 2013-12-27 | 2014-04-23 | 三一重型装备有限公司 | Rocker arm damping device and coal mining machine |
| CN107355221A (en) * | 2016-05-09 | 2017-11-17 | 乔伊·姆·特拉华公司 | Fluid delivery system and method in longwall mining system |
-
2011
- 2011-05-05 CN CN2011201403247U patent/CN202031588U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213092A (en) * | 2011-05-05 | 2011-10-12 | 三一重型装备有限公司 | Coal mining machine for coal wall mining |
| CN103742137A (en) * | 2013-12-27 | 2014-04-23 | 三一重型装备有限公司 | Rocker arm damping device and coal mining machine |
| 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 |
| CN107355221A (en) * | 2016-05-09 | 2017-11-17 | 乔伊·姆·特拉华公司 | Fluid delivery system and method in longwall mining system |
| CN107355221B (en) * | 2016-05-09 | 2021-05-14 | 久益环球地下采矿有限责任公司 | Fluid delivery system and method in longwall mining system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102213092A (en) | Coal mining machine for coal wall mining | |
| CN202031588U (en) | Coal mining machine for long-wall working face | |
| CN202071882U (en) | Hinging type chassis swing connection rack with large swing amplitude | |
| CN105460547A (en) | Transferring and conveying device for aluminum plate production line | |
| CN102267347B (en) | Oscillating connecting frame with large oscillating quantity for hinged type chassis | |
| CN103742133B (en) | Pick Chain conveyer slicing portion of drum shearer | |
| CN203784196U (en) | Multifunctional wheel type drag chain | |
| CN103551304A (en) | Coal screening machine low energy-consumption and high efficiency | |
| CN102373927A (en) | Slice mining technology and coal winning machine thereof | |
| CN2688704Y (en) | Plane-glass wheeling steering conveyor | |
| CN201738923U (en) | Coal mining machine for layer mining | |
| CN204264945U (en) | Shaped steel is bundled is collected in line turnover device | |
| CN202031591U (en) | Fully mechanized coal face complete equipment and coal mining machine thereof | |
| CN101761324A (en) | Novel beam-balanced pumping unit | |
| CN202544851U (en) | Assembled rectangular pipe jacking machine | |
| CN205244246U (en) | Robot cable tow chain | |
| CN104234731A (en) | Novel parallel connection type hydraulic support frame and application of novel parallel connection type hydraulic support frame | |
| CN108928600A (en) | A kind of feed device for automation equipment | |
| CN204371343U (en) | A kind of opencut caterpillar track travelling double-ended shearer | |
| CN205714184U (en) | Four-freedom hybrid formula cutting arm of tunneling machine | |
| CN201915960U (en) | Comprehensive mining equipment and mining machine thereof | |
| CN1869401A (en) | High efficient short-wall coal-winning machine | |
| CN103046927A (en) | Deflectable cutting device of coal mining machine | |
| CN202001044U (en) | Hinging device and hydraulic support | |
| CN203687782U (en) | Firecracker conveying device for firecracker weaving equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20160505 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |