CN103193092B - Underground mine feeding machine - Google Patents
Underground mine feeding machine Download PDFInfo
- Publication number
- CN103193092B CN103193092B CN201310156458.1A CN201310156458A CN103193092B CN 103193092 B CN103193092 B CN 103193092B CN 201310156458 A CN201310156458 A CN 201310156458A CN 103193092 B CN103193092 B CN 103193092B
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- China
- Prior art keywords
- arc
- lifting arm
- shaped guide
- guide rail
- slusher
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Abstract
The invention discloses an underground mine feeding machine comprising a stand, a feeding device and a dragging device, wherein the stand comprises a base and two parallelly arranged arc-shaped guide rails; the arc-shaped guide rails with the front lower than the rear are fixed on the base; the feeding device comprises a movable frame, a scraper pan, a lifting arm, a lifting drive hydraulic cylinder, a scraper material drive hydraulic cylinder and an arc-shaped material-conveying slot; the arc-shaped material-conveying slot is fixed between the two arc-shaped guide rails; the movable frame is in movable connection with the guide rails by virtue of a guide wheel; the bottom end of the lifting arm is in movable connection with the movable frame; the bottom of the lifting drive hydraulic cylinder is in movable connection with the movable frame; the top end of a piston rod is movably connected below the middle of the lifting arm; the bottom of the scraper material drive hydraulic cylinder is in movable connection with the bottom of the lifting arm; the top end of the piston rod is in movable connection with the top of the lifting arm by virtue of a first connection rod; a connection arm is arranged at the rear of the scraper pan; the lower part of the connection arm is in movable connection with the top of the lifting arm and the upper part is in movable connection with the top end of the piston rod of the scraper material drive hydraulic cylinder by virtue of a second connection rod; and the dragging device comprises an electric winch.
Description
Technical field
The present invention relates to a kind of mining equiment, particularly relate to a kind of mine down-hole charger.
Background technology
The material of mine down-hole getting working face is a very hard work as the removing of coal, rock etc., transport charging, is generally in hand charging to mine car or hand charging is dealt on conveyer, narrow space, and labour intensity is large, inefficiency.There is now a kind of charger, adopt a scraper box to be taken off on conveyer by material to transport, this charger needs by conveyer, and conveyer fuselage is longer, take up room large, require high to installation, using area, this charger cannot be used when the driving surface of a lot of new digging is as little in space, inclination angle, tunnel is large etc., use inconvenience.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of mine down-hole charger little, easy to use, efficiency is high that takes up room.
In order to solve the problems of the technologies described above, mine down-hole charger of the present invention comprises frame, feeding device and actuator, described frame comprises base and low early and high after two parallel arc-shaped guide rails arranged, and arc-shaped guide rail is fixed on base, and arc-shaped guide rail front end is near ground, and the outside of arc-shaped guide rail is provided with guide groove, described feeding device comprises movable stand, slusher, lifting arm, lifting drives hydraulic actuating cylinder, rake material drives hydraulic actuating cylinder and arc feeding groove, and described arc feeding groove is fixed between two arc-shaped guide rails, flat, both sides exceed guide rail, its front end is consistent with arc-shaped guide rail front end ground, its rear end forms feed opening to the top of arc-shaped guide rail, and described movable stand is across on arc-shaped guide rail and arc feeding groove, and be flexibly connected with two arc-shaped guide rails by guide wheel, described lifting arm bottom is flexibly connected with movable stand, and described lifting drives bottom hydraulic actuating cylinder and is flexibly connected with movable stand, piston rod top is movably connected on below in the middle part of lifting arm, and described rake material drives bottom hydraulic actuating cylinder and is flexibly connected with bottom lifting arm, piston rod top is connected with lifting arm top movable by first connecting rod, and described slusher quarrel down, anterior quarrel is along being provided with rake teeth, rear portion is provided with connecting arm, and this connecting arm bottom is connected with lifting arm top movable, top expects to drive hydraulic cylinder piston rod top to be flexibly connected with rake by second connecting rod, and slusher width is less than arc feeding groove inboard width and material can be with in arc feeding groove mobile to make slusher, described slusher, lifting arm, lifting drives hydraulic actuating cylinder, rake material drives hydraulic actuating cylinder to be positioned at above arc feeding groove, and described lifting drives hydraulic actuating cylinder to drive hydraulic actuating cylinder to be connected with Hydraulic Pump by hydraulic tubing with rake material, described actuator comprises electric hoist, described electric hoist is fixed on top after arc-shaped guide rail, the steel rope of winch be connected to movable stand with drag movable stand on arc-shaped guide rail along guide rail move back and forth make slusher can by material from arc feeding groove front end through feeding groove rake to feed opening.
Also be provided with charger anchor fitting, described anchor fitting comprises cutting ferrule, active card cylinder, two claws and clip, described cutting ferrule corresponds to tramroad and is fixed on gantry base both sides, perpendicular to ground level, cutting ferrule bottom is provided with fastening screw hole, described active card cylinder is placed in cutting ferrule and can slides up and down in cutting ferrule, active card cylinder bottom is provided with the fastening screw hole corresponding with fastening screw hole, cutting ferrule bottom with the position of fixing active card cylinder, described two claws are symmetricly set in both sides, active card cylinder bottom, be flexibly connected with active card cylinder by pin, outstanding pawl is provided with for blocking the both sides of tramroad inside its underpart, described clip moves down when to be placed on two claws for blocking the both sides of tramroad when claw and wales claw.
Also be provided with charger anchor fitting, described anchor fitting comprises hydraulic column, and both sides, gantry base front end are fixed in described hydraulic column bottom, and the top of hydraulic column extends back, and described hydraulic column is connected with Hydraulic Pump by hydraulic tubing.
Also be provided with front mouth, described front mouth is front wide and rear narrow flat-bottom slot, and its rear end is connected to the front port of arc feeding groove, its front end and earth surface.
Also comprise slusher sway device, described slusher sway device comprises transverse shifting hydraulic actuating cylinder, the bottom of described transverse shifting hydraulic actuating cylinder is movably connected on movable stand side, this side of its piston rod part and lifting arm is flexibly connected, described transverse shifting hydraulic actuating cylinder is connected with Hydraulic Pump by hydraulic tubing, described lifting arm bottom is flexibly connected with movable stand by movable connecting rod, this movable connecting rod vertical sleeve is connected to movable stand and can rotates around bar axle center on movable stand, this movable connecting rod upper end is provided with yoke, this yoke is fixed with a horizontal shaft, lifting arm bottom is flexibly connected with this horizontal shaft can around horizontal rotational shaft.
Also comprise lifting arm extension rod, described lifting arm extension rod to be placed in lifting arm and to be flexibly connected with falling in arm by piston, chute is provided with above lifting arm is outer, chute is provided with slide block, described rake material drive bottom hydraulic actuating cylinder is flexibly connected with slide block rear portion, piston rod top is by first connecting rod and slide block is anterior is flexibly connected, connecting arm bottom, described slusher rear portion is connected with lifting arm extension rod top movable, lifting arm inner chamber is connected with Hydraulic Pump by hydraulic tubing, and lifting arm extension rod top is fixedly connected with slide block front portion.
The tangent line of described arc-shaped guide rail rear portion vertex is parallel with horizon, and winch is fixed on arc-shaped guide rail rear portion vertex, and feed opening underlying space height is greater than standard mine car height.
Adopt structure of the present invention, owing to being provided with two arc-shaped guide rails and arc feeding groove, arc feeding groove is fixed between two arc-shaped guide rails, its front end is consistent with arc-shaped guide rail front end forms feed opening near ground, its rear end to the top of arc-shaped guide rail, feed opening is dragged to from the front end edge arc feeding groove of arc feeding groove after slusher shovel rake material, material is poured into the mine car below feed opening from feed opening, easy to use, efficiency is high.Owing to not adopting conveyer, but adopt slusher shovel rake and convey materials, take up room little, also can normally work even if the inclination angle in tunnel is greater than 45 degree, easy to use.The shovel rake work of slusher is all by Driven by Hydraulic Cylinder, and simple to operate, operating accuracy is high, and efficiency is high.Charger of the present invention may be used for the driving surface of any new digging in down-hole, and range of use is wide.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the charger anchor fitting cutaway view that the present invention has cutting ferrule;
Fig. 3 is the structural representation that the present invention improves rear lifting arm extension rod;
Fig. 4 is the cross section view of arc-shaped guide rail of the present invention and arc feeding groove;
Fig. 5 is the structure cutaway view of slusher sway device movable connecting rod of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail:
As shown in Figure 1, mine down-hole charger of the present invention comprises frame, feeding device and actuator.Frame comprises base 11 and low early and high after two parallel arc-shaped guide rails 2 arranged, and arc-shaped guide rail is fixed on base, and arc-shaped guide rail front end is near ground, and the outside of arc-shaped guide rail is provided with guide groove.Feeding device comprises movable stand 6, slusher 10, lifting arm 4, lifting driving hydraulic actuating cylinder 5, rake material driving hydraulic actuating cylinder 3 and arc feeding groove 13.Arc feeding groove 13 is fixed between two arc-shaped guide rails, flat, both sides exceed guide rail, its front end consistent with arc-shaped guide rail front end near ground, its rear end forms feed opening to the top of arc-shaped guide rail.Movable stand 6 to be across on arc-shaped guide rail and arc feeding groove and to be flexibly connected with two arc-shaped guide rails by guide wheel, and guide wheel is placed in the guide groove of arc-shaped guide rail.Lifting arm 4 bottom is connected by articulate with movable stand, also can be connected by other conventional movable connection methods.Lifting drive bottom hydraulic actuating cylinder 5 is connected by articulate with movable stand, piston rod top is connected to below in the middle part of lifting arm by articulate, also can by other conventional movable connection methods connections.Rake material drive bottom hydraulic actuating cylinder 3 is connected by articulate with bottom lifting arm, piston rod top is connected by articulate with lifting arm top by first connecting rod 7, also can pass through other conventional movable connection methods connections.Slusher 10 quarrel down, anterior quarrel edge is provided with rake teeth, rear portion is provided with connecting arm, this connecting arm bottom is connected by articulate with lifting arm top, top expects to drive hydraulic cylinder piston rod top to be connected by articulate with rake by second connecting rod 8, also can be connected by other conventional movable connection methods.Slusher width is less than arc feeding groove inboard width and material can be with in arc feeding groove mobile to make slusher.Slusher, lifting arm, lifting drive hydraulic actuating cylinder, rake material drives hydraulic actuating cylinder to be positioned at above arc feeding groove.Lifting drives hydraulic actuating cylinder to drive hydraulic actuating cylinder to be connected with Hydraulic Pump by hydraulic tubing with rake material, and piston rod flexible works.Actuator comprises electric hoist 1, and electric hoist is that mine is commonly used.Electric hoist is fixed on top after arc-shaped guide rail, the steel rope of winch be connected to movable stand with drag movable stand on arc-shaped guide rail along guide rail move back and forth make slusher can by material from arc feeding groove front end through feeding groove rake to feed opening.
During work, material harrowed by slusher shovel under rake material driving hydraulic actuating cylinder and lifting drive the driving of hydraulic actuating cylinder, rely on the dragging of winch that material is dragged to feed opening from the front end edge arc feeding groove of arc feeding groove, material is poured into the mine car below feed opening or in other loading attachments from feed opening, then the front end sliding into again arc feeding groove works on, and so forth.
In order to conveniently moving, as shown in Figure 1, road wheel 12 can also be provided with below gantry base to move in order to make charger.
Enable frame balance and stability during in order to work, also be provided with charger anchor fitting.The first anchor fitting is as Fig. 1, shown in Fig. 2, comprise cutting ferrule 14, active card cylinder 19, two claws 15 and clip 16, cutting ferrule corresponds to tramroad and is fixed on gantry base both sides, perpendicular to ground level, cutting ferrule bottom is provided with fastening screw hole, active card cylinder is placed in cutting ferrule and can slides up and down in cutting ferrule, active card cylinder bottom is provided with the fastening screw hole corresponding with fastening screw hole, cutting ferrule bottom with the position of fixing active card cylinder, two claws are symmetricly set in both sides, active card cylinder bottom, be flexibly connected with active card cylinder by pin, outstanding pawl is provided with for blocking the both sides of tramroad inside its underpart, clip moves down when to be placed on two claws for blocking the both sides of tramroad when claw and wales claw, when needing to unclamp claw, clip is moved up, break claw into two with one's hands, claw is moved up together with active card cylinder, fastening screw is to be fixed on cutting ferrule when claw works He after unclamping.The second anchor fitting as shown in Figure 1, comprises hydraulic column 17, and both sides, gantry base front end are fixed in hydraulic column bottom, and the top of hydraulic column extends back, and hydraulic column is connected to realize flexible work with Hydraulic Pump by hydraulic tubing.
In order to slusher rake material is convenient, as shown in Figure 1, be also provided with front mouth 18.Front mouth is front wide and rear narrow flat-bottom slot, and its rear end is connected to the front port of arc feeding groove, its front end and earth surface.Like this, slusher can to arc feeding groove after wider scope rake material.
In order to slusher rake material is convenient, slusher sway device can also be set.Slusher sway device comprises transverse shifting hydraulic actuating cylinder, and the bottom of transverse shifting hydraulic actuating cylinder is movably connected on movable stand side, this side of its piston rod part and lifting arm and is flexibly connected, and transverse shifting hydraulic actuating cylinder is connected with Hydraulic Pump by hydraulic tubing.As shown in Figure 5, lifting arm bottom is flexibly connected with movable stand by movable connecting rod 23, and this movable connecting rod vertical sleeve is connected to movable stand and can rotates around bar axle center on movable stand.This movable connecting rod upper end is provided with yoke, and this yoke is fixed with a horizontal shaft 22, lifting arm bottom is flexibly connected with this horizontal shaft can around horizontal rotational shaft.By the effect of transverse shifting hydraulic actuating cylinder, lifting arm drives slusher can sway, and like this, the scope of slusher rake material can be larger.
In order to make frame keep balance better, avoid the hypsokinesis that may occur, as shown in Figure 1, balanced support wheel 9 can also be set.Balanced support wheel is arranged at frames when gantry base both sides below the feed opening move to feed opening for slusher and balances to make frame.
In order to slusher rake material is convenient, the scope of slusher rake material is larger, as shown in Figure 3, lifting arm extension rod 21 can also be set.Lifting arm extension rod to be placed in lifting arm and to be flexibly connected with falling in arm by piston, and be provided with chute at lifting arm outward, chute is provided with slide block 20.Rake material drive bottom hydraulic actuating cylinder is flexibly connected with slide block rear portion, piston rod top is by first connecting rod and slide block is anterior is flexibly connected.Connecting arm bottom, slusher rear portion is connected with lifting arm extension rod top movable, and lifting arm inner chamber is connected with Hydraulic Pump by hydraulic tubing, and lifting arm extension rod top is fixedly connected with slide block front portion.The mode of described flexible connection can be chain connection, also can be other conventional movable connection methods.
When moving up for avoiding movable stand and winch bump against, between the winch and feed opening on the top of arc-shaped guide rail, can also arrange limit switch to limit the shift position of movable stand near winch place, limit switch is electrically connected with winch control circuit.
In order to be convenient to coordinate with track when the working space that tramroad is housed in down-hole uses, aforesaid road wheel 12 and balance support wheel 9 are the tramcar wheel corresponding with tramroad, so that make charger tramroad to move and fixes.
The installation site optimal way of winch on guide rail is: the tangent line of arc-shaped guide rail rear portion vertex is parallel with horizon, and winch is fixed on arc-shaped guide rail rear portion vertex, and feed opening underlying space height is greater than standard mine car height and is convenient to mine car charging.
Claims (9)
1. a mine down-hole charger, is characterized in that: comprise frame, feeding device and actuator, described frame comprises base (11) and low early and high after two parallel arc-shaped guide rails (2) arranged, and arc-shaped guide rail is fixed on base, and arc-shaped guide rail front end is near ground, and the outside of arc-shaped guide rail is provided with guide groove, described feeding device comprises movable stand (6), slusher (10), lifting arm (4), lifting drives hydraulic actuating cylinder (5), rake material drives hydraulic actuating cylinder (3) and arc feeding groove (13), and described arc feeding groove (13) is fixed between two arc-shaped guide rails, flat, both sides exceed guide rail, its front end is consistent with arc-shaped guide rail front end ground, its rear end forms feed opening to the top of arc-shaped guide rail, and described movable stand (6) is across on arc-shaped guide rail and arc feeding groove, and be flexibly connected with two arc-shaped guide rails by guide wheel, described lifting arm (4) bottom is flexibly connected with movable stand, and described lifting drives hydraulic actuating cylinder (5) bottom to be flexibly connected with movable stand, piston rod top is movably connected on below in the middle part of lifting arm, and described rake material drives hydraulic actuating cylinder (3) bottom to be flexibly connected with bottom lifting arm, piston rod top is connected with lifting arm top movable by first connecting rod (7), and described slusher (10) quarrel down, anterior quarrel is along being provided with rake teeth, rear portion is provided with connecting arm, and this connecting arm bottom is connected with lifting arm top movable, top expects to drive hydraulic cylinder piston rod top to be flexibly connected with rake by second connecting rod (8), and slusher width is less than arc feeding groove inboard width and material can be with in arc feeding groove mobile to make slusher, described slusher, lifting arm, lifting drives hydraulic actuating cylinder, rake material drives hydraulic actuating cylinder to be positioned at above arc feeding groove, and described lifting drives hydraulic actuating cylinder to drive hydraulic actuating cylinder to be connected with Hydraulic Pump by hydraulic tubing with rake material, described actuator comprises electric hoist (1), described electric hoist is fixed on top after arc-shaped guide rail, the steel rope of winch be connected to movable stand with drag movable stand on arc-shaped guide rail along guide rail move back and forth make slusher can by material from arc feeding groove front end through feeding groove rake to feed opening, also be provided with front mouth (18), described front mouth is front wide and rear narrow flat-bottom slot, and its rear end is connected to the front port of arc feeding groove, its front end and earth surface, also comprise slusher sway device, described slusher sway device comprises transverse shifting hydraulic actuating cylinder, the bottom of described transverse shifting hydraulic actuating cylinder is movably connected on movable stand side, this side of its piston rod part and lifting arm is flexibly connected, described transverse shifting hydraulic actuating cylinder is connected with Hydraulic Pump by hydraulic tubing, described lifting arm bottom is flexibly connected with movable stand by movable connecting rod (23), this movable connecting rod vertical sleeve is connected to movable stand and can rotates around bar axle center on movable stand, this movable connecting rod upper end is provided with yoke, this yoke is fixed with a horizontal shaft (22), lifting arm bottom is flexibly connected with this horizontal shaft can around horizontal rotational shaft.
2. mine down-hole charger according to claim 1, is characterized in that: below described gantry base, be also provided with road wheel (12) move in order to make charger.
3. mine down-hole charger according to claim 1 and 2, it is characterized in that: be also provided with charger anchor fitting, described anchor fitting comprises cutting ferrule (14), active card cylinder (19), two claws (15) and clip (16), described cutting ferrule corresponds to tramroad and is fixed on gantry base both sides, perpendicular to ground level, cutting ferrule bottom is provided with fastening screw hole, described active card cylinder is placed in cutting ferrule and can slides up and down in cutting ferrule, active card cylinder bottom is provided with the fastening screw hole corresponding with fastening screw hole, cutting ferrule bottom with the position of fixing active card cylinder, described two claws are symmetricly set in both sides, active card cylinder bottom, be flexibly connected with active card cylinder by pin, outstanding pawl is provided with for blocking the both sides of tramroad inside its underpart, described clip moves down when to be placed on two claws for blocking the both sides of tramroad when claw and wales claw.
4. mine down-hole charger according to claim 1 and 2, it is characterized in that: be also provided with charger anchor fitting, described anchor fitting comprises hydraulic column (17), both sides, gantry base front end are fixed in described hydraulic column bottom, the top of hydraulic column extends back, and described hydraulic column is connected with Hydraulic Pump by hydraulic tubing.
5. mine down-hole charger according to claim 1 and 2, it is characterized in that: also comprise balanced support wheel (9), described balanced support wheel is arranged at frames when gantry base both sides below feed opening move to feed opening for slusher and balances to make frame.
6. mine down-hole charger according to claim 1 and 2, it is characterized in that: also comprise lifting arm extension rod (21), described lifting arm extension rod to be placed in lifting arm and to be flexibly connected with falling in arm by piston, chute is provided with above lifting arm is outer, chute is provided with slide block (20), described rake material drives bottom hydraulic actuating cylinder and is flexibly connected with slide block rear portion, piston rod top is flexibly connected with slide block front portion by first connecting rod, connecting arm bottom, described slusher rear portion is connected with lifting arm extension rod top movable, lifting arm inner chamber is connected with Hydraulic Pump by hydraulic tubing, lifting arm extension rod top is fixedly connected with slide block front portion.
7. mine down-hole charger according to claim 1 and 2, it is characterized in that: between the winch and feed opening on the top of described arc-shaped guide rail, also comprise limit switch to limit the shift position of movable stand near winch place, limit switch is electrically connected with winch control circuit.
8. mine down-hole charger according to claim 5, is characterized in that: described road wheel (12) and balance support wheel (9) are the tramcar wheel corresponding with tramroad, so that make charger tramroad to move and fixes.
9. mine down-hole charger according to claim 1 and 2, is characterized in that: the tangent line of described arc-shaped guide rail rear portion vertex is parallel with horizon, and winch is fixed on arc-shaped guide rail rear portion vertex, and feed opening underlying space height is greater than standard mine car height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310156458.1A CN103193092B (en) | 2013-05-02 | 2013-05-02 | Underground mine feeding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310156458.1A CN103193092B (en) | 2013-05-02 | 2013-05-02 | Underground mine feeding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103193092A CN103193092A (en) | 2013-07-10 |
| CN103193092B true CN103193092B (en) | 2015-04-08 |
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ID=48715946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310156458.1A Expired - Fee Related CN103193092B (en) | 2013-05-02 | 2013-05-02 | Underground mine feeding machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN103193092B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1086944A (en) * | 1963-01-24 | 1967-10-11 | Nat Res Dev | Improvements in or relating to load handling appliances having tiltable masts with trolleys thereon |
| US3972392A (en) * | 1975-04-07 | 1976-08-03 | Norman Allen Johnson | Fail-safe clamping apparatus |
| SU1181973A1 (en) * | 1982-09-16 | 1985-09-30 | Trapeznikov Vladimir A | Single-bucket hoist |
| CN2475713Y (en) * | 2001-04-20 | 2002-02-06 | 陈子忠 | A loader |
| CN101161574A (en) * | 2007-11-15 | 2008-04-16 | 冯志华 | Double-drive hoeing machine |
| CN101929349A (en) * | 2009-06-26 | 2010-12-29 | 王华忠 | Deviated well slag-raking machine |
| CN102602855A (en) * | 2012-03-05 | 2012-07-25 | 安徽省淮河制胶有限公司 | Chain bucket for production of bone collagen |
| CN203255753U (en) * | 2013-05-02 | 2013-10-30 | 何善付 | Mine underground loading machine |
-
2013
- 2013-05-02 CN CN201310156458.1A patent/CN103193092B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1086944A (en) * | 1963-01-24 | 1967-10-11 | Nat Res Dev | Improvements in or relating to load handling appliances having tiltable masts with trolleys thereon |
| US3972392A (en) * | 1975-04-07 | 1976-08-03 | Norman Allen Johnson | Fail-safe clamping apparatus |
| SU1181973A1 (en) * | 1982-09-16 | 1985-09-30 | Trapeznikov Vladimir A | Single-bucket hoist |
| CN2475713Y (en) * | 2001-04-20 | 2002-02-06 | 陈子忠 | A loader |
| CN101161574A (en) * | 2007-11-15 | 2008-04-16 | 冯志华 | Double-drive hoeing machine |
| CN101929349A (en) * | 2009-06-26 | 2010-12-29 | 王华忠 | Deviated well slag-raking machine |
| CN102602855A (en) * | 2012-03-05 | 2012-07-25 | 安徽省淮河制胶有限公司 | Chain bucket for production of bone collagen |
| CN203255753U (en) * | 2013-05-02 | 2013-10-30 | 何善付 | Mine underground loading machine |
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| Publication number | Publication date |
|---|---|
| CN103193092A (en) | 2013-07-10 |
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Granted publication date: 20150408 Termination date: 20180502 |