CN101643173A - Coal lifting and coal unloading mechanism of mine skip - Google Patents
Coal lifting and coal unloading mechanism of mine skip Download PDFInfo
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- CN101643173A CN101643173A CN200910183734A CN200910183734A CN101643173A CN 101643173 A CN101643173 A CN 101643173A CN 200910183734 A CN200910183734 A CN 200910183734A CN 200910183734 A CN200910183734 A CN 200910183734A CN 101643173 A CN101643173 A CN 101643173A
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Abstract
The invention discloses a coal lifting and coal unloading mechanism of a mine skip, belonging to the technical field of coal mine facilities. The coal lifting and coal unloading mechanism comprises afirst skip, a second skip, a coal unloading platform, a pulling rope, a bracket and a winch device, and is characterized in that the first skip and the second skip are respectively provided with a signal emitter; pulling rope bodies connected by the pulling rope and the upper parts of the first skip and the second skip are respectively provided with a sensor; one of a pair of sensors is electrically connected with the sigh emitter arranged on the first skip; the other sensor is electrically connected with the signal emitter arranged on the second skip; a signal receiver is arranged on the coalunloading platform; one of a pair of signal receivers is matched with the signal emitter arranged on the first skip; and the other signal receiver is matched with the signal emitter arranged on the second skip. The coal lifting and coal unloading mechanism of mine skip has the advantage of timely judging whether remaining coal unloaded exist in the skip or not, thus ensuring accurate measuring and avoiding accidents occurring.
Description
Technical field
The invention belongs to facility technology field, colliery, be specifically related to a kind of coal lifting and coal unloading mechanism of mine skip.
Background technology
Fig. 3 provided be widely used in the colliery in the prior art and be the coal lifting and coal unloading mechanism of mine skip of single rope race, comprise first, the second skip bucket 1a, 1b, the platform 2 of unloading coal, hauling rope 3, support 4, winch gear 5, first, the second skip bucket 1a, 1b all connects with hauling rope 3, the platform 2 of unloading coal is located on the terrace, and the derrick 21 of the platform 2 of unloading coal is corresponding with pit shaft 6, support 4 is fixed on the terrace, the top pivot of support 4 is provided with first, second head sheave 41,42, winch gear 5 is configured on the terrace, aforesaid hauling rope 3 is respectively around reaching in first, second head sheave 41,42, the winch dish 51, the first of winch gear 5, the second skip bucket 1a, the bottom of 1b is connect by skip bucket connection rope 31.
The coal that comes from the bank is fed among the first skip bucket 1a and the second skip bucket 1b after weighing hopper 611 meterings by feedway 61, under the work of winch gear 5, make 5 motions of winch dish, drive hauling rope 3 by the motion of winch dish 51, the second skip bucket 1b that coal will be housed by hauling rope 3 rises to corresponding to the platform 2 of unloading coal from pit shaft 6 and unloads coal, and by waggon 22 outputs, at the second skip bucket 1b when the platform 2 of unloading coal is unloaded coal, the first skip bucket 1a is in the state of coalingging, and vice versa.Winch dish 51 is rotatings, so that make first, second skip bucket 1a, 1b by turns or claim alternately to coaling and to unload coal.
The coal lifting and coal unloading mechanism of mine skip of single rope race of said structure formula in the use of reality the time regular meeting run into the situation that has surplus coal in the skip bucket; so-called surplus coal is meant in the waggon 22 that should all be discharged into the platform 2 of unloading coal originally, yet partly is retained in the skip bucket.For example, when having surplus coal among the second skip bucket 1b, descending when coalingging once more at it so, just played the effect of balance block, the speed of the first skip bucket 1a that is in uplink state is changed (acceleration), winch gear 5 produces out of control, can cause bump when serious to first, second head sheave 41,42, cause hauling rope 3 and snap, first, second skip bucket 1a, 1b fall, and cause serious safety misadventure; Otherwise when having a surplus coal among the first skip bucket 1a, so, the second skip bucket 1b that is in uplink state after coalingging aforementioned circumstances can occur equally.In fact, aforementioned circumstances is customary already in the colliery.
Exist the phenomenon of surplus coal objectively can't avoid in the skip bucket, because the situation of coal is comparatively complicated, bond or the like between gangue that the quality that foreign material that stay when wherein being mingled with exploitation unavoidably such as anchor pole, batten, metal piece and coal seam self exist is bigger and the coal.
Not ccontaining doubt, the surplus coal of skip bucket be one of mine operation avoid greatly because of heavy then cause major accident because gently then cause metering inaccurate, in view of this, be necessary the coal lifting and coal unloading mechanism of mine skip in the prior art is rationally improved.
Summary of the invention
Task of the present invention is to provide a kind of can understand the coal lifting and coal unloading mechanism of mine skip that the nothing left coal is arranged in the skip bucket and use the guarantee accurate measurement and avoid accident to take place in time.
Task of the present invention is finished like this, a kind of coal lifting and coal unloading mechanism of mine skip, comprise first, second skip bucket, the platform of unloading coal, hauling rope, support and winch gear, first, second skip bucket all connects with hauling rope, the platform of unloading coal is located on the terrace, and the derrick of the platform of unloading coal is corresponding with pit shaft, support is fixed on the terrace, the top pivot of support is provided with first, second head sheave, first, each top of second head sheave corresponding to derrick, winch gear is configured on the terrace, with first, the hauling rope that second skip bucket connects is respectively around reaching in first, on the winch dish of second head sheave and winch gear, first, the bottom of second skip bucket is connect by the skip bucket connection rope, be characterised in that: described first, respectively be provided with a signal projector on second skip bucket, described hauling rope and described first, respectively be equipped with a sensor on the hauling rope rope body that the top of second skip bucket is connected, one of them sensor in the pair of sensors is electrically connected with signal projector on being located at first skip bucket, and another sensor is electrically connected with signal projector on being located at second skip bucket; The described platform of unloading coal is provided with a pair of signal receiver that is used for the signal that the received signal projector sends and the signal feedback that is received is given the electric control box of winch gear, one of them signal receiver in a pair of signal receiver matches with signal projector on being located at first skip bucket, and another signal receiver matches with signal projector on being located at second skip bucket.
In a specific embodiment of the present invention, described signal projector comprises the projector body with emitting antenna and is used for the projector body is covered the protective case that protects, the projector body is located in the shell chamber of protective case, and the side in the short transverse of protective case has been received a pair of antenna base, between a pair of antenna base, be provided with one day spool, described emitting antenna places a day spool, and the upper end of emitting antenna leans out the tube chamber of day spool.
In another specific embodiment of the present invention, the top of the length direction of described protective case is furnished with a battery case, is provided for providing for described projector body the battery of working power in the battery case.
In another specific embodiment of the present invention, described sensor comprises sensor body, sensor body box and lid, the top of one side of the short transverse of sensor body has bolster on, the both sides at middle part respectively have a fixing projection, is furnished with a briquetting on a pair of fixedly projection, the bottom has bolster, the middle part of last bolster is concaved with first grooving, the middle part of briquetting is concaved with second grooving, and the middle part of bolster is concaved with the 3rd grooving down, first, second, it is corresponding that the 3rd grooving keeps, described hauling rope is by way of first, second, the 3rd grooving and compel to hold by described briquetting, briquetting is taken described projection and is fixed with a pair of positioning seat in the box chamber that is located at described sensor body box, the lead of the sensing head of sensor body is connected with described signal projector, described lid and sensor body lid are joined, wherein, top and bottom in the short transverse of sensor body box respectively are installed with one first clamp, the middle part of a pair of first clamp respectively constitutes one first groove, top and bottom in the short transverse of lid respectively are installed with one second clamp, the middle part of a pair of second clamp respectively constitutes one second groove, and this second groove is corresponding with described first groove and cooperatively interact and form and described first, second, the hauling rope guide hole that the described hauling rope of the corresponding confession of the 3rd grooving passes through.
Go back in the specific embodiment of the present invention, the top of described sensor body box is equipped with a Wire sheath pipe, and described lead is arranged in the Wire sheath pipe.
More of the present invention and in specific embodiment, described a pair of positioning seat is a nut.
Technical scheme provided by the invention is when surplus coal occurring in first, second skip bucket, by being serially connected in the sensor senses on the hauling rope and giving signal projector with signal feedback, give signal receiver by signal projector to signal, and then signal feedback is given the electric control box of winch gear by signal receiver, winch gear is quit work, resume work behind the surplus coal in the skip bucket for clearance, thereby can judge in time and have or not the not surplus coal of removal in the skip bucket, thereby ensure the correct of metering and avoid accident to take place.
Description of drawings
Fig. 1 is a specific embodiment constructional drawing of the present invention.
Fig. 2 is the constructional drawing of sensor of the present invention.
Fig. 3 is the scheme drawing of the coal lifting and coal unloading mechanism of mine skip in the prior art.
The specific embodiment
For the inspector that the makes Patent Office especially public can be expressly understood technical spirit of the present invention and beneficial effect more, the applicant general elaborates in conjunction with the accompanying drawings in the mode of embodiment below, but to the description of embodiment all is not restriction to the present invention program, any according to the present invention's design done only for pro forma but not substantial equivalent transformation all should be considered as technical scheme category of the present invention.
Please be referring to Fig. 1, provided specific embodiment structure of coal lifting and coal unloading mechanism of mine skip, on the terrace 10 in colliery, set firmly the platform 2 of unloading coal, support 4 and winch gear 5 respectively, the platform 2 of unloading coal also can be described as and unloads coaling-base or run-coal bin, winch gear 5 is configured in the hoist house usually, top pivot at support 4 is provided with first, second head sheave 41,42, first, second head sheave 41,42 is all corresponding to the top of the derrick 21 of the platform 2 of unloading coal, stagger in the position of first, second head sheave 41,42, wherein, second head sheave 42 is positioned at the oblique upper of first head sheave 41.Aforesaid derrick 21 is corresponding to pit shaft 6, the feedway 61 that has a pair of conveyor type at the position of pit shaft 6, the coal that comes from the bank is transported to weighing hopper 611 by feedway 61, and then is fed to following first, second skip bucket 1a, the 1b that is about to mention by weighing hopper 611.The hauling rope 3 preferred steel ropes that use are filled the post of, the two ends that two end points of hauling rope 3 are hauling rope 3 link with position placed in the middle, the top of first, second skip bucket 1a, 1b respectively, and the middle part of hauling rope 3 is by illustrating around reaching in the winch dish 51 and second head sheave 42 of first head sheave 41, winch gear 5.The position placed in the middle of the bottom of first, second skip bucket 1a, 1b is implemented to connect by the skip bucket connection rope 31 as hauling rope 3, and promptly the two ends of skip bucket connection rope 31 connect with first, second skip bucket 1a, 1b respectively.
As technical essential of the present invention, respectively be fixed with a signal projector 7 on the top of first, second skip bucket 1a, 1b, and on the hauling rope rope body that hauling rope 3 and first, second skip bucket 1a, 1b are connected, respectively be fixed with a sensor 8, and on the aforesaid platform 2 of unloading coal, be provided with a pair of signal receiver 9, wherein, sensor 8 is electrically connected with signal projector 7.Signal projector 7 carries power supply such as dry storage battery or storage battery.
Continue to see Fig. 1; signal projector 7 comprises projector body 71 and the protective case 72 of being furnished with emitting antenna 711; projector body 72 can be by the market acquisition; for example preferably select the ZWJF-II type projector of using by the wireless device Co., Ltd production and sales of Fengshun, NanJing City, Jiangsu Province,China with being not limited to; protective case 72 plays a protective role for projector body 71; because the environment in colliery is generally comparatively abominable, thereby projector body 71 is placed can play in the protective case 72 projector body 71 good covered the effect of protecting.Protective case 72 is fixed by its base plate 723 and by screw and the first skip bucket 1a or the second skip bucket 1b.Because the structure that is installed in the signal projector 7 on first, second skip bucket 1a, the 1b is identical, and mounting means also is identical, so the applicant only at length shows the signal projector 7 that matches with the second skip bucket 1b in Fig. 1.Side in the short transverse of protective case 72 has promptly at present been received a pair of antenna base 721 by the left side of location status shown in Figure 1, one day spool 7211 is set between a pair of antenna base 721, and aforesaid emitting antenna 711 penetrates in the upper end of sky spool 7211 and emitting antenna 711 and is stuck in day spool 7211.In addition, be furnished with a battery case 722, in the battery case 722 battery be set, provide working power for projector body 71 by battery at the top of the length direction of protective case 72.The signal that projector body 71 sends is received by the signal receiver 9 that is located on the platform 2 of unloading coal, and the electric control box that signal is sent to (feeding back to) winch gear 5 by signal receiver 9 programmable controller (PLC) for example.Aforesaid signal receiver 9 is selected the JVCZ II-1 type receptor of using by the wireless device Co., Ltd production and sales of Fengshun, NanJing City, Jiangsu Province,China equally.
Please be referring to Fig. 2, because the structure of the pair of sensors of illustrating among Fig. 18 is identical, therefore the applicant selects one and describes in detail in conjunction with Fig. 2, the sensor body 81 that constitutes sensor 8 can be from the market acquisition, for example preferred but not use by sharp your the sensor Company Limited by Shares production in Shanghai City, China with being limited to, the model of selling is the CX-30CAP weight sensor, the profile of this sensor body 81 is just as criss-cross, the top of one side of its short transverse has bolster 811 on, and is somebody's turn to do first grooving 8111 that the middle part of going up bolster 811 constitutes a U-shaped in general; The both sides at middle part respectively are extended with a projection 812, on a pair of projection 812, fix a briquetting 813, the middle part of briquetting 813 constitutes second grooving 8131, penetrate screw hole on the briquetting 813 and the screw hole on the projection 812 successively and make screw rod 8132 and then screw on the positioning seat 821 in the box chamber that is located at sensor body box 82 with a pair of screw rod 8132, positioning seat 821 is a nut; The bottom of sensor body 81 has bolster 814, and the position placed in the middle of following bolster 814 constitutes the 3rd grooving 8141 that takes the shape of the letter U and tend to equally.By shown in Figure 2, whole sensor body 81 is being fixed with positioning seat 821 by means of a pair of screw rod 8131 backs by briquetting 813, and integrally is arranged in the box chamber of sensor body box 82.It is corresponding that aforesaid first, second, third grooving 8111,8121,8141 keeps each other.Lid 83 is fixing by screw and sensor body box 82.Top and bottom at sensor body box 82 respectively are fixed with one first clamp 822, and respectively be fixed with one second clamp 831 in the top and the bottom of lid 83, first, second clamp 822,831 correspond to each other, the middle part of first clamp 822 constitutes one first groove 8221, and the middle part of second clamp 831 also constitutes one second groove 8311, first, second groove 8221,8311 are semi-circular recesses, when with screw with first, second clamp 822,831 when combining, and first, second groove 8221,8311 have constituted a circular cavity jointly.The hauling rope of illustrating among the figure 3 penetrates and wears successively from the circular cavity that just is made of jointly first, second groove 8221,8311 and first, second, third grooving 8111,8131,8141, draws the top connection with the second skip bucket 1b shown in Figure 1 again from first, second groove 8221,8311 of bottom.Hauling rope 3 suffers the compeling to hold of briquetting 813 and presents flex point at the middle part of sensor body 81, promptly form vee shape (also can claim parabolic shape), when having surplus coal among the second skip bucket 1b, action of gravity is in hauling rope 3, make hauling rope 3 on sensor body 81, adopt living deformation, its deformation quantity is located at sensing head 815 perception in the sensor body 81, and signal feedback is given the signal projector 7 that is electrically connected with it by lead 8151, send signal by signal projector 7 and give signal receiver 9, with the electric control box of signal, winch dish 51 is quit work by signal receiver 9 to winch gear 5.Protect for the lead 8151 to sensing head 815, dispose Wire sheath pipe 823 at the top of sensor body box 82, lead 8151 penetrates Wire sheath pipe 823 and is electrically connected with signal projector 7.
The applicant sketches use of the present invention in conjunction with Fig. 1 and Fig. 2, because the mine skip that is single rope race is carried the coal coal tripper, therefore hauling rope 3 in fact only is one, a skip bucket is being maintained at two ends separately, be the first skip bucket 1a and the second skip bucket 1b shown in Figure 1, the bottom of first, second skip bucket 1a, 1b is connect by skip bucket connection rope 31 (employing steel rope).Unload coal in the process carrying coal, first, second skip bucket 1a, the 1b work of taking turns, the so-called work of taking turns is meant, when the first skip bucket 1a when coalingging, then the second skip bucket 1b is in the state of unloading coal, vice versa.Being example at present by state shown in Figure 1, from the coal in the zone of mining by feedway 61 metering-in buckets 611, feed to the first skip bucket 1a that is in the pit shaft 6 by weighing hopper 611, this moment, the second skip bucket 1b was under the work of winch gear 5, be promoted to the platform 2 of unloading coal by its winch dish 51 and implement to unload coal, coal is discharged into waits to wait at the waggon 22 at platform 2 places of unloading coal.The situation of coal in case occur having a surplus among the second skip bucket 1b, the weight of the cause second skip bucket 1b changes, make the stressed increase of hauling rope 3, be of sensing head 815 perception of the deformation quantity of hauling rope 3 by the sensor body 81 of Fig. 2 signal, speed is about to signal and gives signal projector 7, is received by signal receiver 9, and then is given the electric control box of winch gear 5 by signal receiver 9 to signal, winch dish 51 is quit work, treat to resume work after the labor cleaning is trapped in surplus coal among the second skip bucket 1b.In the electric control box of winch gear 5, establish loaded weight and unload the comparator that load carrying ability is made comparisons, when exceeding setting range, system alarm, thus guaranteed to carry safety and the reliability that coal is unloaded coal.Therefore, technical scheme of the present invention has solved insurmountable for a long time technical matters.Aforesaid sensor body 81 adopts chargeable battery, and the battery one-shot usage is more than 30 days, and display resolution is 10 kilograms, Data Update 3-5 time/second.
Claims (6)
1, a kind of coal lifting and coal unloading mechanism of mine skip, comprise first, second skip bucket (the 1a, 1b), the platform (2) of unloading coal, hauling rope (3), support (4) and winch gear (5), first, second skip bucket (the 1a, 1b) all connect with hauling rope (3), the platform (2) of unloading coal is located on the terrace, and the derrick (21) of the platform of unloading coal (2) is corresponding with pit shaft (6), support (4) is fixed on the terrace, the top pivot of support (4) is provided with first, second head sheave (41,42), first, second head sheave (41,42) each is corresponding to the top of derrick (21), winch gear (5) is configured on the terrace, with first, second skip bucket (the 1a, 1b) hauling rope of Lian Jieing (3) is respectively around reaching in first, second head sheave (41,42) and on the winch dish (51) of winch gear (5), first, second skip bucket (the 1a, bottom 1b) is connect by skip bucket connection rope (31), be characterised in that: described first, second skip bucket (the 1a, respectively be provided with a signal projector (7) 1b), at described hauling rope (3) and described first, second skip bucket (the 1a, respectively be equipped with a sensor (8) on the hauling rope rope body that top 1b) is connected, one of them sensor (8) in the pair of sensors (8) is electrically connected with signal projector (7) on being located at first skip bucket (1a), and another sensor (8) is electrically connected with signal projector (7) on being located at second skip bucket (1b); The described platform of unloading coal (2) is provided with a pair of signal receiver (9) that is used for the signal that received signal projector (7) sends and the signal feedback that is received is given the electric control box of winch gear (5), one of them signal receiver (9) in a pair of signal receiver (9) matches with signal projector (7) on being located at first skip bucket (1a), and another signal receiver (9) matches with signal projector (7) on being located at second skip bucket (1b).
2, coal lifting and coal unloading mechanism of mine skip according to claim 1, it is characterized in that described signal projector (7) comprise have emitting antenna (711) projector body (71) and be used for projector body (71) is covered the protective case (72) that protects, projector body (71) is located in the shell chamber of protective case (72), and the side in the short transverse of protective case (72) has been received a pair of antenna base (721), between a pair of antenna base (721), be provided with one day spool (7211), described emitting antenna (711) places a day spool (7211), and the upper end of emitting antenna (711) leans out the tube chamber of a day spool (7211).
3, coal lifting and coal unloading mechanism of mine skip according to claim 2, the top that it is characterized in that the length direction of described protective case (72) is furnished with a battery case (722), is provided for providing for described projector body (71) battery of working power in the battery case (722).
4, coal lifting and coal unloading mechanism of mine skip according to claim 1, it is characterized in that described sensor (8) comprises sensor body (81), sensor body box (82) and lid (83), the top of one side of the short transverse of sensor body (81) has bolster on (811), the both sides at middle part respectively have a fixing projection (812), is furnished with a briquetting (813) on a pair of fixedly projection (812), the bottom has bolster (814), the middle part of last bolster (811) is concaved with first grooving (8111), the middle part of briquetting (813) is concaved with second grooving (8131), and the middle part of bolster (814) is concaved with the 3rd grooving (8141) down, first, second, the 3rd grooving (8111,8131,8141) keep corresponding, described hauling rope (3) is by way of first, second, the 3rd grooving (8111,8131,8141) and by described briquetting (813) compel to hold, it is fixing with a pair of positioning seat (821) in the box chamber that is located at described sensor body box (82) that briquetting (813) is taken described projection (812), the lead (8151) of the sensing head (815) of sensor body (81) is connected with described signal projector (7), described lid (83) is joined with sensor body box (82) lid, wherein, top and bottom in the short transverse of sensor body box (82) respectively are installed with one first clamp (822), the middle part of a pair of first clamp (822) respectively constitutes one first groove (8221), top and bottom in the short transverse of lid (83) respectively are installed with one second clamp (831), the middle part of a pair of second clamp (831) respectively constitutes one second groove (8311), and this second groove (8311) is corresponding with described first groove (8221) and cooperatively interact and form and described first, second, the 3rd grooving (8111,8131,8141) the hauling rope guide hole that passes through of the described hauling rope of corresponding confession (3).
5, coal lifting and coal unloading mechanism of mine skip according to claim 4 is characterized in that the top of described sensor body box (82) is equipped with a Wire sheath pipe (823), and described lead (8151) is arranged in Wire sheath pipe (823).
6, coal lifting and coal unloading mechanism of mine skip according to claim 4 is characterized in that described a pair of positioning seat (821) is a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101837347A CN101643173B (en) | 2009-08-07 | 2009-08-07 | Coal lifting and coal unloading mechanism of mine skip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101837347A CN101643173B (en) | 2009-08-07 | 2009-08-07 | Coal lifting and coal unloading mechanism of mine skip |
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| CN101643173A true CN101643173A (en) | 2010-02-10 |
| CN101643173B CN101643173B (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101837347A Expired - Fee Related CN101643173B (en) | 2009-08-07 | 2009-08-07 | Coal lifting and coal unloading mechanism of mine skip |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102040135A (en) * | 2011-01-26 | 2011-05-04 | 徐州泰荣煤矿设备有限公司 | Bearing real-time monitoring system for single-rope winding hoist system |
| CN102173359A (en) * | 2011-01-24 | 2011-09-07 | 徐州泰荣煤矿设备有限公司 | Sensing device for carrying out real-time monitoring on load bearing of single-rope winding hoisting system |
| CN114473404A (en) * | 2020-11-11 | 2022-05-13 | 山西太钢不锈钢股份有限公司 | Method for quickly disassembling and assembling steel wire adhesive tape hopper of bucket elevator |
-
2009
- 2009-08-07 CN CN2009101837347A patent/CN101643173B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173359A (en) * | 2011-01-24 | 2011-09-07 | 徐州泰荣煤矿设备有限公司 | Sensing device for carrying out real-time monitoring on load bearing of single-rope winding hoisting system |
| CN102173359B (en) * | 2011-01-24 | 2013-01-30 | 徐州泰荣煤矿设备有限公司 | Sensing device for carrying out real-time monitoring on load bearing of single-rope winding hoisting system |
| CN102040135A (en) * | 2011-01-26 | 2011-05-04 | 徐州泰荣煤矿设备有限公司 | Bearing real-time monitoring system for single-rope winding hoist system |
| CN114473404A (en) * | 2020-11-11 | 2022-05-13 | 山西太钢不锈钢股份有限公司 | Method for quickly disassembling and assembling steel wire adhesive tape hopper of bucket elevator |
| CN114473404B (en) * | 2020-11-11 | 2024-04-19 | 山西太钢不锈钢股份有限公司 | Method for quickly disassembling and assembling steel wire adhesive tape hopper of bucket elevator |
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| CN101643173B (en) | 2011-12-14 |
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