CN111456809A - Gangue filling equipment and mining equipment - Google Patents
Gangue filling equipment and mining equipment Download PDFInfo
- Publication number
- CN111456809A CN111456809A CN202010307817.9A CN202010307817A CN111456809A CN 111456809 A CN111456809 A CN 111456809A CN 202010307817 A CN202010307817 A CN 202010307817A CN 111456809 A CN111456809 A CN 111456809A
- Authority
- CN
- China
- Prior art keywords
- gangue
- base
- force application
- pushing
- driving mechanism
- 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.)
- Pending
Links
- 238000005065 mining Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 239000003245 coal Substances 0.000 claims abstract description 18
- 230000001681 protective effect Effects 0.000 claims description 10
- 238000004904 shortening Methods 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 12
- 239000002699 waste material Substances 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 229910001208 Crucible steel Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/06—Filling-up mechanically
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
The utility model relates to a tunnelling construction field provides a waste filling equipment and mining equipment. The gangue filling equipment can comprise a base, a driving mechanism and a pushing piece. The driving mechanism is arranged on the base and is provided with a force application end which can be extended/shortened in a preset direction. The pushing piece is connected with the force application end. The pushing piece is used for pushing the gangue when the force application end extends. The waste filling equipment and the mining equipment provided by the embodiment of the disclosure can push waste rocks to a goaf beside a roadway, so that the coal gangue can be prevented from being transported to the ground to occupy land and pollute the environment, and a roadway side can be formed in the goaf to serve as a filling support.
Description
Technical Field
The utility model relates to a tunnelling construction field especially relates to a waste filling is equipped and mining equipment.
Background
The coal gangue is waste generated in the coal mining process, and the discharge amount accounts for 10% -20% of the coal yield.
At present, most of the discharge of underground gangue of coal mines in China is lifted to the ground by underground transportation and then discharged and accumulated to a designated place, and a pollution area, namely a gangue dump, is formed in the long run. The existence of the waste rock hills not only occupies a large amount of land resources, but also causes serious environmental pollution and has adverse effects on human beings and society to different degrees. Therefore, how to reduce the land occupation of the gangue and reduce or eliminate the environmental pollution is a problem which must be paid attention to in the current coal industry.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The utility model aims to provide a waste filling equipment and mining equipment can reduce the waste and occupy the soil.
According to an aspect of the present disclosure, there is provided a gangue filling apparatus including:
a base;
the driving mechanism is arranged on the base and is provided with a force application end capable of extending/shortening in a preset direction;
the pushing piece is connected to the force application end and used for pushing the gangue when the force application end extends.
In an exemplary embodiment of the present disclosure, the gangue filling equipment further includes:
the guide rod is arranged on the base and is parallel to the preset direction, and the pushing piece can slide on the guide rod in a reciprocating mode.
In an exemplary embodiment of the present disclosure, the guide bar is a cylindrical structure, and the gangue filling equipment further includes:
and one end of the connecting rod is connected with the pushing piece, and the other end of the connecting rod extends into the guide rod and can reciprocate in the guide rod.
In an exemplary embodiment of the present disclosure, the number of the guide bars is two.
In an exemplary embodiment of the disclosure, the number of the driving mechanisms and the number of the pushing members are two, and the two pushing members are connected to the two driving mechanisms in a one-to-one correspondence.
In an exemplary embodiment of the present disclosure, the gangue filling equipment further includes:
the protective cover is arranged on the base, and the driving mechanism is positioned between the protective cover and the base.
In an exemplary embodiment of the disclosure, the base is provided with a bearing surface, the driving mechanism is connected to the bearing surface, and the predetermined direction is parallel to the bearing surface.
In an exemplary embodiment of the present disclosure, the driving mechanism is a hydraulic jack.
In an exemplary embodiment of the present disclosure, the preset direction is perpendicular to an extending direction of a roadway in the coal mining area.
According to another aspect of the disclosure, there is also provided a mining apparatus comprising the spoil filling arrangement of any of the above.
The gangue filling equipment and the mining equipment have the advantages that the base is supported in the roadway in the using process, when the roadway is tunneled to generate gangue, the force application end of the driving mechanism is extended to enable the pushing piece to move and further push the gangue, so that the gangue is pushed to a goaf beside the roadway, the gangue can be prevented from being transported to the ground to occupy the land and pollute the environment, a roadway side can be formed in the goaf to serve as a filling support, and air leakage of the goaf can be prevented.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The above and other features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 is a top view of a mine spoil filling apparatus in an embodiment of the present disclosure;
FIG. 2 is a cross-sectional view A-A of the structure shown in FIG. 1:
fig. 3 is a cross-sectional view B-B of the structure shown in fig. 1.
In the figure: 1. a pusher member; 2. a connecting rod; 3. a guide bar; 4. a shield; 5. a base; 6. a drive mechanism.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure.
The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the primary technical ideas of the disclosure.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon is turned upside down, the "up" component will become the "down" component. Other relative terms, such as "high," "low," "top," "bottom," "left," "right," and the like are also intended to have similar meanings.
When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure. The terms "a," "an," "the," and the like are used to denote the presence of one or more elements/components/parts; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. The terms "first" and "second", etc. are used merely as labels, and are not limiting on the number of their objects.
The embodiment of the disclosure provides gangue filling equipment. As shown in fig. 1-3, the gangue filling apparatus may include a base 5, a drive mechanism 6, and a pusher 1, wherein:
the driving mechanism 6 is provided on the base 5, and has a force application end capable of being extended/shortened in a predetermined direction. The pusher 1 is connected to the force application end. The pushing piece 1 is used for pushing gangue when the force application end is extended.
The gangue filling equipment of the embodiment of the disclosure supports the base 5 in the roadway in the use process, and when the roadway is tunneled to generate gangue, the force application end of the driving mechanism 6 is extended to move the pushing piece 1 so as to push the gangue to a goaf beside the roadway, so that the gangue can be prevented from being transported to the ground to occupy land and pollute the environment, a roadway side can be formed in the goaf to serve as a filling support, and air leakage of the goaf can be prevented.
The following describes in detail each component of the gangue filling equipment of the disclosed embodiment:
the gangue filling equipment of the present disclosure may be used in the N00 construction method for very thin coal seams. The ultra-thin coal seam may be located between a roof rock mass and a floor rock mass, that is, the roof rock mass is located above the ultra-thin coal seam and the floor rock mass is located below the ultra-thin rock seam. The ultra-thin coal seam, the roof rock mass and the floor rock mass form a semi-coal rock mass. The thickness of the ultra-thin coal seam may be less than 1.3m, and may be, for example, 0.4m, 0.6m, 0.8m, 1.1m, and the like. The thickness of the roof rock mass and the thickness of the floor rock mass are both larger than that of the ultra-thin coal seam, and specific values are not specially limited.
The base 5 is a supporting structure of gangue filling equipment. The base 5 can be the bottom of the gangue filling device and is supported on the bottom surface of the roadway. The base 5 may be of a plate-like construction, although other constructions are possible. For example, the base 5 may include a bottom plate. The base plate may be provided with a bearing surface. In addition, the base 5 may also include ribs. The rib may be disposed on a side of the bottom plate, but the embodiment of the present disclosure is not limited thereto. Since the base 5 is a support member and is subjected to a large load, the base 5 is easily damaged, and the service life of the base 5 is reduced, the base 5 can be made of a material having a long fatigue life. The material having a long fatigue life is selected from cast steel, and of course, may be selected from 40Cr steel, but the material in the present exemplary embodiment is not limited thereto.
The drive mechanism 6 may be provided to the base 5. Taking the base 5 comprising a bottom plate as an example, the driving mechanism 6 may be disposed on a bearing surface of the bottom plate. The drive mechanism 6 may comprise a force application end. The force application end is capable of being elongated/shortened in a preset direction, that is, the force application end is capable of being elongated in the preset direction and, of course, also capable of being shortened in the preset direction. The drive mechanism 6 may be a jack. Further, the driving mechanism 6 may be a hydraulic jack, but the embodiment of the present disclosure is not limited thereto. The predetermined direction may be parallel to the carrying surface, or may not be parallel. Taking the example of the plane of the bearing surface and the preset direction, when the force application end extends along the preset direction, the force application end can extend out of the base 5. The preset direction can also be vertical to the extending direction of the roadway in the coal mining area.
The pusher 1 is connected to the force application end. The pusher 1 is capable of reciprocating in a predetermined direction while the force application end is elongated/shortened in the predetermined direction. In one embodiment, the actuating member may be removably coupled to the force application end. The detachable connection mode may be a threaded connection, and of course, the driving element and the force application end may also be detachably connected through a pin, but the embodiments of the present disclosure are not limited thereto. In other embodiments of the present disclosure, the driving member may be fixedly connected to the force application end. The fixed connection may be welding, or may be other fixed connection methods such as bonding. The pusher 1 may be of plate-like construction. The pushing member 1 having a plate-like structure may be perpendicular to the predetermined direction, but the embodiment of the present disclosure is not limited thereto. For example, the pushing member 1 may be a push bucket. In addition, the pushing piece 1 is directly contacted with gangue, the load borne by the pushing piece 1 is large, the pushing piece 1 is easy to damage, the service life of the pushing piece 1 is shortened, and therefore materials with long fatigue life can be adopted to prepare the pushing piece 1. The material having a long fatigue life is selected from cast steel, and of course, may be selected from 40Cr steel, but the material in the present exemplary embodiment is not limited thereto.
The gangue filling equipment of the disclosed embodiment may further include a guide bar 3. The guide bar 3 may be provided to the base 5. Taking the base 5 comprising a bottom plate as an example, the guide rod 3 may be disposed on the bearing surface of the bottom plate. Wherein, this guide bar 3 can be with bottom plate fixed connection, for example welding etc. certainly, this guide bar 3 also can be with the removable connection of bottom plate. The guide bar 3 may be parallel to the preset direction. The pushing piece 1 can slide on the guide rod 3 in a reciprocating mode, and the guide rod 3 is parallel to the preset direction, so that the pushing piece 1 can move in a reciprocating mode along the preset direction, and the pushing bucket can accurately push coal gangue to a target area. The number of the guide rods 3 may be one, two or three, and of course, the number of the guide rods 3 may be more. Taking the number of the guide rods 3 as two as an example, the two guide rods 3 are distributed on both sides of the driving mechanism 6 in a direction perpendicular to the preset direction. Further, the guide bar 3 may have a cylindrical shape in outer shape, and the present exemplary embodiment is not particularly limited thereto with respect to the size of the cylindrical shape. Of course, the guide rod 3 may have other shapes, and will not be described in detail.
In one embodiment, the guide rod 3 may be a cylindrical structure. The central axis of the cylindrical structure is parallel to the preset direction. The gangue filling equipment of the disclosed embodiment may further include a connecting rod 2. The link 2 may extend in a predetermined direction. One end of the connecting rod 2 is connected to the pushing member 1. Wherein the connecting rod 2 can be detachably connected with the pushing piece 1. The detachable connection mode may be a threaded connection, and of course, the connection rod 2 and the pushing member 1 may also be detachably connected through a pin, but the embodiment of the present disclosure is not limited thereto. The connecting rod 2 can also be fixedly connected with the pushing piece 1. The fixed connection may be welding, or may be other fixed connection methods such as bonding. The other end of the connecting rod 2 extends into the guide rod 3 and can reciprocate in the guide rod 3 along a preset direction. Wherein the other end of the connecting rod 2 is the end of the connecting rod 2 far away from the pushing piece 1. In other embodiments of the present disclosure, the pushing member 1 may be sleeved on the guide rod 3 and can slide on the guide rod 3 in a reciprocating manner.
The spoil filling apparatus of the disclosed embodiment may further comprise a shield 4. The shield 4 may be provided to the base 5. Wherein the shield 4 may have a plate-like structure. Taking the base 5 comprising a base plate as an example, the shield 4 in the plate-like structure may be parallel to the base plate, but may, of course, be non-parallel. The drive mechanism 6 of the present disclosure may be located between the shield 4 and the base 5. The protective cover 4 can protect the driving mechanism 6, prevent the driving mechanism 6 from being damaged, and prolong the service life of the driving mechanism 6. In addition, the protective cover 4 can bear rocks falling above a roadway, the load on the protective cover 4 is large, the protective cover 4 is easy to damage, the service life of the protective cover 4 is shortened, and therefore the protective cover 4 can be made of materials with long fatigue life. The material having a long fatigue life is selected from cast steel, and of course, may be selected from 40Cr steel, but the material in the present exemplary embodiment is not limited thereto. The size of the shield 4 in the embodiment of the present disclosure is not particularly limited as long as the shield 4 can cover a partial region of the drive mechanism 6. The partial area of the driving mechanism 6 may be a half area of the driving mechanism 6, but the embodiment of the present disclosure is not particularly limited to this.
In addition, the number of the driving mechanisms 6 and the pushing members 1 of the embodiment of the present disclosure may be multiple, and the multiple pushing members 1 are connected to the multiple driving mechanisms 6 in a one-to-one correspondence. Taking the number of the driving mechanisms 6 and the pushing members 1 as an example, each driving mechanism 6 is provided with a force application end capable of extending/shortening in a preset direction, and each force application end is connected with one pushing member 1. Further, four parts of the two driving mechanisms 6 and the two pushing members 1 are distributed along the preset direction. Wherein, two actuating mechanism 6 adjacent settings, two impeller 1 are located two actuating mechanism 6's both sides, that is to say in the direction of predetermineeing, two impeller 1 are located the outside, and two actuating mechanism 6 are located the inboard to can carry out the waste filling to the both sides collecting space area simultaneously through waste filling equipment.
The disclosed embodiments also provide a mining apparatus. The mining apparatus may include the mine spoil filling apparatus of any one of the embodiments described above. Of course, the mining equipment may also include a coal cutter, but the disclosed embodiments are not particularly limited in this regard. Because the gangue filling equipment that this mining equipment of this disclosure embodiment included is the same with the gangue filling equipment in the embodiment of above-mentioned gangue filling equipment, consequently, it has the same beneficial effect, and this disclosure is no longer repeated herein.
It is to be understood that the disclosure is not limited in its application to the details of construction and the arrangements of the components set forth in the specification. The present disclosure is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications are within the scope of the present disclosure. It should be understood that the disclosure disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present disclosure. The embodiments described in this specification illustrate the best mode known for carrying out the disclosure and will enable those skilled in the art to utilize the disclosure.
Claims (10)
1. A gangue filling equipment, characterized by comprising:
a base;
the driving mechanism is arranged on the base and is provided with a force application end capable of extending/shortening in a preset direction;
the pushing piece is connected to the force application end and used for pushing the gangue when the force application end extends.
2. The gangue filling apparatus as claimed in claim 1, further comprising:
the guide rod is arranged on the base and is parallel to the preset direction, and the pushing piece can slide on the guide rod in a reciprocating mode.
3. The gangue filling apparatus as claimed in claim 2, wherein the guide bar is a cylindrical structure, the gangue filling apparatus further comprising:
and one end of the connecting rod is connected with the pushing piece, and the other end of the connecting rod extends into the guide rod and can reciprocate in the guide rod.
4. The gangue filling apparatus as claimed in claim 2, wherein the number of the guide bars is two, and the guide bars are distributed on both sides of the driving mechanism in a direction perpendicular to the preset direction.
5. The gangue filling apparatus as claimed in claim 1, wherein the number of the driving mechanisms and the pushing members is two, and the two pushing members are connected to the two driving mechanisms in a one-to-one correspondence.
6. The gangue filling apparatus as claimed in claim 1, further comprising:
the protective cover is arranged on the base, and the driving mechanism is positioned between the protective cover and the base.
7. The gangue filling apparatus as claimed in claim 1, wherein the base is provided with a bearing surface, the driving mechanism is connected to the bearing surface, and the predetermined direction is parallel to the bearing surface.
8. The spoil filling apparatus of claim 1, wherein the drive mechanism is a hydraulic jack.
9. The gangue filling equipment as claimed in claim 1, wherein the predetermined direction is perpendicular to the direction of extension of the roadway in the coal mining area.
10. A mining apparatus, characterized in that the mining apparatus comprises the mine spoil filling arrangement of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010307817.9A CN111456809A (en) | 2020-04-17 | 2020-04-17 | Gangue filling equipment and mining equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010307817.9A CN111456809A (en) | 2020-04-17 | 2020-04-17 | Gangue filling equipment and mining equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111456809A true CN111456809A (en) | 2020-07-28 |
Family
ID=71677182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010307817.9A Pending CN111456809A (en) | 2020-04-17 | 2020-04-17 | Gangue filling equipment and mining equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111456809A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2067183C1 (en) * | 1991-10-28 | 1996-09-27 | Шахтинский филиал Новочеркасского политехнического института | Filling device |
| CN101487395A (en) * | 2009-02-24 | 2009-07-22 | 辽宁天安矿山科技有限公司 | Template support for filling after support |
| CN101806227A (en) * | 2010-04-27 | 2010-08-18 | 铁煤多种经营天成机电设备总厂 | Gangue pushing machine for filing gangue in mined-out area |
| CN201606088U (en) * | 2009-12-24 | 2010-10-13 | 郑州四维机电设备制造有限公司 | Tamping mechanism for filling support |
| CN202215292U (en) * | 2011-08-17 | 2012-05-09 | 郑州四维机电设备制造有限公司 | Double-guiding waste rock filling mechanism for hydraulic support |
| CN109989787A (en) * | 2019-05-09 | 2019-07-09 | 陕西长武亭南煤业有限责任公司 | A kind of coal mine waste rock filling combination ramming mechanism |
-
2020
- 2020-04-17 CN CN202010307817.9A patent/CN111456809A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2067183C1 (en) * | 1991-10-28 | 1996-09-27 | Шахтинский филиал Новочеркасского политехнического института | Filling device |
| CN101487395A (en) * | 2009-02-24 | 2009-07-22 | 辽宁天安矿山科技有限公司 | Template support for filling after support |
| CN201606088U (en) * | 2009-12-24 | 2010-10-13 | 郑州四维机电设备制造有限公司 | Tamping mechanism for filling support |
| CN101806227A (en) * | 2010-04-27 | 2010-08-18 | 铁煤多种经营天成机电设备总厂 | Gangue pushing machine for filing gangue in mined-out area |
| CN202215292U (en) * | 2011-08-17 | 2012-05-09 | 郑州四维机电设备制造有限公司 | Double-guiding waste rock filling mechanism for hydraulic support |
| CN109989787A (en) * | 2019-05-09 | 2019-07-09 | 陕西长武亭南煤业有限责任公司 | A kind of coal mine waste rock filling combination ramming mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102410017B (en) | Supporting type integrated tunneling-anchoring machine | |
| CN103016031A (en) | Mining telescopic support and using method thereof | |
| CN210564611U (en) | Temporary supporting structure for coal mine excavation | |
| CN204247858U (en) | A kind of sheet shearing stub bar device for discharging | |
| CN111456809A (en) | Gangue filling equipment and mining equipment | |
| CN110566252B (en) | Shield type anchor rod trolley | |
| CN201753453U (en) | Hydraulic loader-digger | |
| CN102910463B (en) | Vibration breaking-down shovel | |
| CN205977257U (en) | Mining excavation is walking prop and entry driving machine for working face | |
| CN209833457U (en) | Large-inclination-angle shovel bucket type mining dump truck carriage | |
| CN202325609U (en) | Light hydraulic bracket of short wall working surface | |
| CN201593447U (en) | Belt conveyor multiple-spot side-dumping device for filling | |
| CN206955237U (en) | A kind of harrow coal charging machine | |
| CN201460917U (en) | Hydraulic support for filing waste rock | |
| CN218021820U (en) | Rear axle rear frame assembly of diesel carry scraper | |
| CN215046241U (en) | Mining spiral conveying device capable of movably lifting | |
| CN219012615U (en) | Mining development machine frame | |
| CN203308464U (en) | Heightened baffle structure for baffle and triangular inserting plate of scraper loader | |
| CN205969524U (en) | Rotation type track that rope saw was used | |
| CN213892541U (en) | Conveyer of special support of loader | |
| CN202810852U (en) | Baffle for scraper loader | |
| CN203919777U (en) | A kind of inclined type trash compactor platform that fascinates | |
| CN220469977U (en) | Alternating support forward shield self-moving support | |
| CN104695498B (en) | Loader with crushing function | |
| CN101761356B (en) | Multi-point side-discharging device of filling belt conveyer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200728 |