CN105668133A - Cable chute with rotatable chute body, and scraper conveyor - Google Patents
Cable chute with rotatable chute body, and scraper conveyor Download PDFInfo
- Publication number
- CN105668133A CN105668133A CN201610095007.5A CN201610095007A CN105668133A CN 105668133 A CN105668133 A CN 105668133A CN 201610095007 A CN201610095007 A CN 201610095007A CN 105668133 A CN105668133 A CN 105668133A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- pedal
- coupling sleeve
- lower groove
- groove 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
- B65G19/18—Details
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0406—Details thereof
- H02G3/0418—Covers or lids; Their fastenings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0437—Channels
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention relates to the field of scraper conveyors on the working surface of a coal mine, in particular to a cable chute with a rotatable chute body, and a scraper conveyor, and aims to solve the problems that when a coal mining machine is maintained on a mined-out side, maintenance staff need to disassemble and assemble the cable chute, so that time and labor are consumed and the safety is low. The cable chute disclosed by the invention comprises an upper chute body, a lower chute body, a cover plate and a pedal, wherein the upper chute body and the lower chute body are connected through a hinged structure and are fixed through positioning pins, and the upper chute body can rotate; the cover plate and the lower chute body are connected through a second hinged structure and fixed through spacing pins, and the cover plate can rotate; the pedal and the cover plate are connected through a third hinged structure and are fixed through other spacing pins, and the pedal can rotate. According to the cable chute with the rotatable chute body, and the scraper conveyor disclosed by the invention, the maintenance staff can maintain the coal mining machine conveniently, safely and quickly, the cable chute is prevented from being disassembled, the labor intensity of the maintenance staff is greatly reduced, losses of cables and water liquid pipelines are greatly reduced, and the equipment overhaul efficiency is improved.
Description
Technical field:
The present invention relates to a kind of coal mine work area drag conveyor field, specifically a kind of cable trough with rotatable cell body and drag conveyor.
Background technology:
Cable trough is one of important parts of coal mine work area drag conveyor, and it is usually overall structure, and upper part is the guide groove that coal-winning machine moves back and forth coal mining trailing cable, and lower part is the laying passage of drag conveyor cable, water liquid pipeline, control line. Cable trough and intermediate channel, by bolt-connection, are contained in the mined out side of drag conveyor. Generally when coal-winning machine is safeguarded in mined out side, attendant needs the high pressure liquid first releasing in liquid pipeline, and cable, liquid pipeline, control line are extracted enough length, then dismount the cable trough of relevant position, again cable trough and various cable, pipeline etc. are installed after maintenance and reset. So not only can loss cable, liquid pipeline, control line, too increase labor intensity and the unsafe factor of attendant simultaneously, had a strong impact on maintenance efficiency, be unfavorable for that colliery realizes the exploitation of safety, high-yield and high-efficiency.
Summary of the invention:
It is an object of the invention to provide a kind of cable trough with rotatable cell body, adopt upper and lower cell body, cover plate, pedal split articulated structure, when attendant is operated, only the cable in upper groove body suitably need to be elongated and rotate upper groove body, pedal is placed horizontal level, can vacate and safeguard space and carry out trampling operation, again cable trough and various cable, pipeline, pedal etc. are installed after maintenance and reset, without dismounting relevant cables groove, solve when attendant generally safeguards waste time and energy, uneasy congruence problem.
Another object of the present invention is to provide a kind of drag conveyor, its cable trough is for being with rotatable cell body so that need not dismantle cable trough when safeguarding coal-winning machine, time saving and energy saving, safe and efficient.
In order to solve the problems referred to above, the technical solution used in the present invention is: a kind of cable trough with rotatable cell body, including upper groove body, lower groove, cover plate, pedal;Upper groove body is coupled by articulated structure with lower groove and fixes with alignment pin, and upper groove body can rotate; Cover plate is coupled by articulated structure with lower groove and fixes with spacer pin, and cover plate can rotate; Pedal is coupled and with spacer pin with fixed by articulated structure with cover plate, and pedal can rotate.
Further, described upper groove body is welded into a U-frame frame by left end riser, lower end base plate and right-hand member gripper shoe, and the left side of lower end base plate is provided with hole, upper groove body location, and upper groove body coupling sleeve is welded on the bottom righthand side of U-frame frame; Lower groove is formed by the multiple supporting plate assembly welding in left end riser, upper end top board, lower end stud and centre; Upper end top board left end is provided with and positions the hole, lower groove location that hole is corresponding with upper groove body, and right-hand member is welded with lower groove coupling sleeve; Upper groove body coupling sleeve and lower groove coupling sleeve are in axis direction interlaced arrangement, and set position is not overlapping; Upper strata supporting plate right-hand member is provided with protrusion holed part;
Upper groove body coupling sleeve docks with lower groove coupling sleeve, uses bearing pin traverse, and both sides fasten; Upper groove body can the axle center of the coupling sleeve of the above lower groove of lower groove relatively rotate, and after upper groove body resets, inserts in upper groove body hole, location and hole, lower groove location fixing with alignment pin.
Further, both sides, described cover plate upper end are provided with oblong aperture, dock with the protrusion holed part of the upper strata supporting plate of lower groove, fix through hole with spacer pin; Below oblong aperture, both sides are provided with hand hole; Middle gusset is welded on the centre position of cover plate; Centre position, cover plate lower end is welded with cover plate coupling sleeve; Cover plate bottom, left and right is respectively equipped with cover plate and couples ear, inserts the lower end stud of lower groove, and fastens with bearing pin; Cover plate can the axle center of the stud that lower groove couples ear and lower groove relatively rotate.
Further, centre position, described pedal upper end is provided with oblong aperture, docks with the middle gusset of cover plate, is fixed into upright position with spacer pin through hole; Pedal centre position is provided with multiple location gusset, and gusset baseplane, location is pedal horizontal location positioning face; Both sides, pedal bottom are provided with pedal coupling sleeve, dock with cover plate coupling sleeve, and fasten with bearing pin; Pedal can rotate with the axle center of pedal coupling sleeve Yu cover plate coupling sleeve by opposing cover plates.
Further, described drag conveyor is provided with the cable trough with rotatable cell body described in any one of content described above.
Further, described pedal centre position is provided with 3 location gussets.
After adopting said structure, pedal only need to be rotated and can trample to horizontal level by attendant, and coal-winning machine is detected; When mined out side needs to safeguard coal-winning machine, electric cable for coal mining machine in the cable trough upper groove body of relevant position only need to be drawn to correct position by attendant, then alignment pin is pulled down, upper groove body is rotated, without dismounting cable trough, water within lower groove, liquid pipe and cable all can normally use; When maintenance work terminates, only upper groove body need to turning round horizontal level and fix with alignment pin, electric cable for coal mining machine resets, and pedal rotates to upright position fixing.
Advantages of the present invention: the bolt that this cable trough with rotatable cell body uses is few, intensity is high, compact conformation, by rotating upper groove body and pedal, it is possible to vacate and safeguard space, it is simple to attendant carries out trampling operation, avoid dismounting cable trough, make that plant maintenance is convenient, safety, time saving and energy saving, meet the exploitation requirement of coal mine work area high-yield and high-efficiency.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the present invention;
Fig. 2 is upper groove body schematic diagram of the present invention;
Fig. 3 is lower groove schematic diagram of the present invention;
Fig. 4 is cover plate schematic diagram of the present invention;
Fig. 5 is pedal schematic diagram of the present invention.
In figure, 1, upper groove body, 2, lower groove, 3, cover plate, 4, pedal, 11, upper groove body coupling sleeve, 12, hole, upper groove body location, 21, stud, 22, upper strata supporting plate, 23, lower groove coupling sleeve, 24, hole, lower groove location, 31, cover plate couple ear, 32, cover plate coupling sleeve, 33, middle gusset, 34, oblong aperture, 35, hand hole, 41, pedal holes, 42, location gusset, 43, pedal coupling sleeve.
Detailed description of the invention:
As shown in Fig. 1～5, a kind of cable trough with rotatable cell body and drag conveyor include: upper groove body 1, lower groove 2, cover plate 3, pedal 4; Upper groove body 1 is coupled by articulated structure with lower groove 2 and fixes with alignment pin, and upper groove body 1 can rotate; Cover plate 3 is coupled by articulated structure with lower groove 2 and fixes with spacer pin, and cover plate 3 can rotate; Pedal 4 is coupled by articulated structure with cover plate 3 and fixes with spacer pin, and pedal 4 can rotate.
Described upper groove body 1 is welded into a U-frame frame by left end riser, lower end base plate and right-hand member gripper shoe, and the left side of lower end base plate is provided with hole 12, upper groove body location, and upper groove body coupling sleeve 11 is welded on the bottom righthand side of U-frame frame; Lower groove 2 is formed by the multiple supporting plate assembly welding in left end riser, upper end top board, lower end stud 21 and centre; Upper end top board left end is provided with and positions the hole 24, lower groove location that hole 12 is corresponding with upper groove body, and right-hand member is welded with lower groove coupling sleeve 23; Upper groove body coupling sleeve 11 and lower groove coupling sleeve 23 are in axis direction interlaced arrangement, and set position is not overlapping; Upper strata supporting plate 22 right-hand member is provided with protrusion holed part;
Upper groove body coupling sleeve 11 docks with lower groove coupling sleeve 23, uses bearing pin traverse, and both sides fasten; Upper groove body 1 can the axle center of the coupling sleeve of lower groove more than 2 lower groove relatively rotate, and after upper groove body 1 resets, inserts in upper groove body hole 12, location and hole 24, lower groove location fixing with alignment pin.
Both sides, described cover plate 3 upper end are provided with oblong aperture 34, dock with the protrusion holed part of the upper strata supporting plate 22 of lower groove 2, fix through hole with spacer pin; Oblong aperture 34 both sides below are provided with hand hole 35; Middle gusset 33 is welded on the centre position of cover plate 3; Centre position, cover plate 3 lower end is welded with cover plate coupling sleeve 32; Cover plate 3 bottom, left and right is respectively equipped with cover plate and couples ear 31, inserts the lower end stud 21 of lower groove 2, and fastens with bearing pin; Cover plate 3 relatively can couple the axle center of ear 31 and the stud 21 of lower groove 2 and rotates by lower groove.
Centre position, described pedal 4 upper end is provided with oblong aperture 41, docks with the middle gusset 33 of cover plate 3, is fixed into upright position with spacer pin through hole; Pedal 4 centre position is provided with multiple location gusset 42, and gusset 42 baseplane, location is pedal 4 horizontal level locating surface; Both sides, pedal bottom are provided with pedal coupling sleeve 43, dock with cover plate coupling sleeve 32, and fasten with bearing pin; Pedal 4 can rotate with the axle center of pedal coupling sleeve 43 with cover plate coupling sleeve 32 by opposing cover plates 3.
Described drag conveyor is provided with the cable trough with rotatable cell body described in any one of content described above.
Described pedal 4 centre position is provided with 3 location gussets 42.
The concrete installation process of the present invention is:
Upper groove body coupling sleeve 11 docks with lower groove coupling sleeve 23, and fastens with bearing pin, then inserts in upper groove body hole 12, location and hole 24, lower groove location with bearing pin;Upper groove body 1 can rotate, cover plate 3 lower end cover plate couples ear 31 and inserts the stud 21 of lower groove 2 respectively, and fasten with bearing pin, cover plate 3 can rotate, there are two oblong aperture 34 cover plate 3 upper end, can dock with the upper strata supporting plate 22 right-hand member projection of lower groove 2, fix forming the lower groove structure closed with spacer pin; Pedal coupling sleeve 43 docks with cover plate coupling sleeve 32, and fastens with bearing pin, and pedal 4 can rotate, and is positioned to horizontal level by positioning gusset 42, and there is pedal holes 41 pedal 4 upper end, can dock with the middle gusset 33 of cover plate 3, be fixed into upright position with spacer pin.
It is schematic but not pro forma restriction by preferred embodiment to the detailed description that technical solution of the present invention carries out above. Those skilled in the art is reading on the basis of description of the present invention, technical scheme described in embodiment can be modified, or wherein portion of techniques feature is carried out equivalent replacement, and these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of embodiment of the present invention technical scheme.
Claims (6)
1. the cable trough with rotatable cell body, it is characterised in that: include upper groove body (1), lower groove (2), cover plate (3), pedal (4); Upper groove body (1) is coupled by articulated structure with lower groove (2) and fixes with alignment pin, and upper groove body (1) can rotate; Cover plate (3) is coupled by articulated structure with lower groove (2) and fixes with spacer pin, and cover plate (3) can rotate; Pedal (4) is coupled by articulated structure with cover plate (3) and fixes with spacer pin, and pedal (4) can rotate.
2. the cable trough with rotatable cell body according to claim 1, it is characterized in that: described upper groove body (1) is welded into a U-frame frame by left end riser, lower end base plate and right-hand member gripper shoe, the left side of lower end base plate is provided with upper groove body hole, location (12), and upper groove body coupling sleeve (11) is welded on the bottom righthand side of U-frame frame; Lower groove (2) is formed by left end riser, upper end top board, the multiple supporting plate assembly welding of lower end stud (21) and centre; Upper end top board left end is provided with and positions lower groove hole, location (24) that hole (12) is corresponding with upper groove body, and right-hand member is welded with lower groove coupling sleeve (23); Upper groove body coupling sleeve (11) and lower groove coupling sleeve (23) are in axis direction interlaced arrangement, and set position is not overlapping; Upper strata supporting plate (22) right-hand member is provided with protrusion holed part;
Upper groove body coupling sleeve (11) docks with lower groove coupling sleeve (23), uses bearing pin traverse, and both sides fasten; Upper groove body (1) can the axle center of the coupling sleeve of lower groove (2) above lower groove relatively rotate, after upper groove body (1) resets, insert in upper groove body hole, location (12) and lower groove hole, location (24) fixing with alignment pin.
3. the cable trough with rotatable cell body according to claim 1, it is characterized in that: described cover plate (3) both sides, upper end are provided with oblong aperture (34), dock with the protrusion holed part of the upper strata supporting plate (22) of lower groove (2), fix through hole with spacer pin; Oblong aperture (34) both sides below are provided with hand hole (35); Middle gusset (33) is welded on the centre position of cover plate (3); Cover plate (3) centre position, lower end is welded with cover plate coupling sleeve (32); Cover plate (3) bottom, left and right is respectively equipped with cover plate and couples ear (31), inserts the lower end stud (21) of lower groove (2), and fastens with bearing pin; Cover plate (3) relatively can couple the axle center of ear (31) and the stud (21) of lower groove (2) and rotates by lower groove.
4. the cable trough with rotatable cell body according to claim 1, it is characterized in that: described pedal (4) centre position, upper end is provided with oblong aperture (41), dock with the middle gusset (33) of cover plate (3), be fixed into upright position with spacer pin through hole;Pedal (4) centre position is provided with multiple location gusset (42), and gusset (42) baseplane, location is pedal (4) horizontal level locating surface; Both sides, pedal bottom are provided with pedal coupling sleeve (43), dock with cover plate coupling sleeve (32), and fasten with bearing pin; Pedal (4) can rotate with the axle center of pedal coupling sleeve (43) Yu cover plate coupling sleeve (32) by opposing cover plates (3).
5. a drag conveyor, it is characterised in that: described drag conveyor is provided with the cable trough with rotatable cell body described in any one of Claims 1-4.
6. the cable trough with rotatable cell body according to claim 1, it is characterised in that: described pedal (4) centre position is provided with 3 location gusset (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610095007.5A CN105668133B (en) | 2016-02-16 | 2016-02-16 | A kind of cable trough and drag conveyor of the rotatable groove body of band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610095007.5A CN105668133B (en) | 2016-02-16 | 2016-02-16 | A kind of cable trough and drag conveyor of the rotatable groove body of band |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105668133A true CN105668133A (en) | 2016-06-15 |
| CN105668133B CN105668133B (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610095007.5A Active CN105668133B (en) | 2016-02-16 | 2016-02-16 | A kind of cable trough and drag conveyor of the rotatable groove body of band |
Country Status (1)
| Country | Link |
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| CN (1) | CN105668133B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106586394A (en) * | 2016-07-21 | 2017-04-26 | 中煤张家口煤矿机械有限责任公司 | Foldable observation pedal for scraper conveyer |
| CN106816843A (en) * | 2017-04-01 | 2017-06-09 | 山东能源重装集团恒图科技有限公司 | A kind of upset cable trough for drag conveyor |
| CN107054991A (en) * | 2017-03-01 | 2017-08-18 | 中煤张家口煤矿机械有限责任公司 | A kind of intermediate channel and drag conveyor for super high seam full-seam mining |
| CN114798466A (en) * | 2022-04-29 | 2022-07-29 | 珠海市润鼎智能科技有限公司 | Look selects quick-witted guide channel mounting structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1123785A (en) * | 1965-01-28 | 1968-08-14 | Gewerk Eisenhuette Westfalia | Chain scraper conveyor |
| CN201273134Y (en) * | 2008-06-27 | 2009-07-15 | 安徽省电力公司阜阳供电公司 | Novel ladder used for high-voltage circuit-breaker maintenance |
| CN201473003U (en) * | 2009-09-09 | 2010-05-19 | 林州重机集团股份有限公司 | Curtain type cable trough for scrapping plate conveyor |
| CN201639214U (en) * | 2010-01-27 | 2010-11-17 | 三一重型装备有限公司 | Cable trough for scraper conveyor |
| CN202696070U (en) * | 2012-06-07 | 2013-01-23 | 三一重型综采成套装备有限公司 | Cable tray for scraper conveyer and scraper conveyer |
| CN203445554U (en) * | 2013-07-16 | 2014-02-19 | 江苏亨通线缆科技有限公司 | Cable trough box |
| CN103662635A (en) * | 2013-11-27 | 2014-03-26 | 中煤张家口煤矿机械有限责任公司 | Split insert-plate type examination cable trough of scraper conveyer and scraper conveyer |
| CN104495230A (en) * | 2014-11-14 | 2015-04-08 | 三一重型装备有限公司 | Cable chute, middle chute and scraper conveyer |
| CN104617531A (en) * | 2015-02-09 | 2015-05-13 | 连云港天明装备有限公司 | Split cable trough of scraper conveyer |
| CN205471168U (en) * | 2016-02-16 | 2016-08-17 | 中煤张家口煤矿机械有限责任公司 | Take cable duct and scraper conveyor of rotatable cell body |
-
2016
- 2016-02-16 CN CN201610095007.5A patent/CN105668133B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1123785A (en) * | 1965-01-28 | 1968-08-14 | Gewerk Eisenhuette Westfalia | Chain scraper conveyor |
| CN201273134Y (en) * | 2008-06-27 | 2009-07-15 | 安徽省电力公司阜阳供电公司 | Novel ladder used for high-voltage circuit-breaker maintenance |
| CN201473003U (en) * | 2009-09-09 | 2010-05-19 | 林州重机集团股份有限公司 | Curtain type cable trough for scrapping plate conveyor |
| CN201639214U (en) * | 2010-01-27 | 2010-11-17 | 三一重型装备有限公司 | Cable trough for scraper conveyor |
| CN202696070U (en) * | 2012-06-07 | 2013-01-23 | 三一重型综采成套装备有限公司 | Cable tray for scraper conveyer and scraper conveyer |
| CN203445554U (en) * | 2013-07-16 | 2014-02-19 | 江苏亨通线缆科技有限公司 | Cable trough box |
| CN103662635A (en) * | 2013-11-27 | 2014-03-26 | 中煤张家口煤矿机械有限责任公司 | Split insert-plate type examination cable trough of scraper conveyer and scraper conveyer |
| CN104495230A (en) * | 2014-11-14 | 2015-04-08 | 三一重型装备有限公司 | Cable chute, middle chute and scraper conveyer |
| CN104617531A (en) * | 2015-02-09 | 2015-05-13 | 连云港天明装备有限公司 | Split cable trough of scraper conveyer |
| CN205471168U (en) * | 2016-02-16 | 2016-08-17 | 中煤张家口煤矿机械有限责任公司 | Take cable duct and scraper conveyor of rotatable cell body |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106586394A (en) * | 2016-07-21 | 2017-04-26 | 中煤张家口煤矿机械有限责任公司 | Foldable observation pedal for scraper conveyer |
| CN107054991A (en) * | 2017-03-01 | 2017-08-18 | 中煤张家口煤矿机械有限责任公司 | A kind of intermediate channel and drag conveyor for super high seam full-seam mining |
| CN106816843A (en) * | 2017-04-01 | 2017-06-09 | 山东能源重装集团恒图科技有限公司 | A kind of upset cable trough for drag conveyor |
| CN114798466A (en) * | 2022-04-29 | 2022-07-29 | 珠海市润鼎智能科技有限公司 | Look selects quick-witted guide channel mounting structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105668133B (en) | 2018-06-26 |
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Inventor after: Li Xiyong Inventor after: Qi Yuhao Inventor after: Yan Zhiyong Inventor after: Liu Zhuang Inventor after: Zhao Xiaodong Inventor after: Wang Jianmin Inventor after: Yang Xuefeng Inventor after: Zhang Deqing Inventor after: Liao Wujiang Inventor after: Meng Xiangjun Inventor after: Zhang Chuanchang Inventor after: Fan Tao Inventor after: Li Zheng Inventor after: Liu Kun Inventor after: Wang Zhenping Inventor after: He Xiaochun Inventor after: Wang Zhidai Inventor before: Zhang Chuanchang Inventor before: Zhang Deqing Inventor before: Liao Wujiang Inventor before: Fan Tao Inventor before: Liu Kun Inventor before: He Xiaochun Inventor before: Wang Zhidai Inventor before: Yan Zhiyong Inventor before: Zhao Xiaodong Inventor before: Wang Jianmin Inventor before: Yang Xuefeng |
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Effective date of registration: 20161011 Address after: 076250 Zhangjiakou industrial agglomeration area, Hebei coal road, No. 1 Applicant after: China Coal Zhangjiakou Coal Mining Machinery Co., Ltd. Applicant after: Yankuang Group Ltd. Address before: 076250 Zhangjiakou industrial agglomeration area, Hebei coal road, No. 1 Applicant before: China Coal Zhangjiakou Coal Mining Machinery Co., Ltd. |
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