CN104386414B - The automatic sideslip detection of mining belt conveyor and correcting device - Google Patents
The automatic sideslip detection of mining belt conveyor and correcting device Download PDFInfo
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- CN104386414B CN104386414B CN201410578638.3A CN201410578638A CN104386414B CN 104386414 B CN104386414 B CN 104386414B CN 201410578638 A CN201410578638 A CN 201410578638A CN 104386414 B CN104386414 B CN 104386414B
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- time position
- position bar
- correcting device
- belt conveyor
- bar
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Classifications
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- 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
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/60—Arrangements for supporting or guiding belts, e.g. by fluid jets
- B65G15/64—Arrangements for supporting or guiding belts, e.g. by fluid jets for automatically maintaining the position of the belts
-
- 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
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/10—Arrangements of rollers
- B65G39/12—Arrangements of rollers mounted on framework
- B65G39/16—Arrangements of rollers mounted on framework for aligning belts or chains
-
- 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
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Conveyors (AREA)
Abstract
The present invention relates to mining machinery, it is intended to solve existing deviation correcting device and belt can be caused abrasion, or mineral can be caused in correction operates to drop and rectify a deviation the problem such as excessively. Object for this reason, the present invention provides the automatic sideslip detection of a kind of mining belt conveyor and correcting device, and this device is arranged on the two ends of the driving roll of rotary conveyor, and comprises: what be connected to driving roll two ends returns position bar; It is embedded at the pressure transmitter returned in the bar of position; Time position lever actuator at driving roll two ends it is embedded accordingly with time position bar; And be arranged to integrally and the controller being connected in Signal transmissions mode with pressure transmitter with time position lever actuator, for ordering back when pressure transmitter detects belt deviation, position lever actuator drives back position bar to arrive softened state to this controller, thus forces belt to return to normal operational position by increasing back position bar diameter. Belt can not be caused abrasion by the technical scheme of the present invention, and mineral also can not be caused in correction operates to drop and rectify a deviation the problem such as excessively.
Description
Technical field
The present invention relates to mining machinery, it is specifically related to the automatic sideslip detection of a kind of mining belt conveyor and correcting device.
Background technology
Mining belt conveyor refers to the rotary conveyor used in the digging of the mineral such as such as coal, production, transhipment, the course of processing. Mining belt conveyor has that traffic capacity is big, Working environment is complicated, supporting capacity is strong and the feature such as shipment distance length, is all used widely in each main mining area of China. Mining belt conveyor is possible not only in mineral mining process to use, can also use equally in the mineral course of processing. In energy consumption, mining belt conveyor can effectively reduce energy consumption, it is to increase economic benefit, compares the mode of transport such as automobile and more can save the energy and protection of the environment. In addition, mining belt conveyor in maintenance, have maintenance little, safeguard the features such as simple, be therefore also subject to liking of mineral processing enterprise.
In actual use, due to reasons such as installation quality, belt tension and guide roller surface roughness, mining belt conveyor often there will be the phenomenon of belt deviation. First, belt deviation can directly cause belt both sides discontinuity, and As time goes on, this kind of discontinuity can cause again shorten the work-ing life of belt. In extreme circumstances, when the side of belt crosses the edge of deflector roll (driving roll or driven roll), belt can edge with deflector roll rub in operation, thus accelerate it and damage. Secondly, especially for adopting the mining belt conveyor of flat band, belt deviation also can cause the problems such as mineral drop and transfer roller running is not steady.
Prior art comprises the technical scheme of multiple solution belt deviation problem. These technical schemes are mainly divided into two classes, and a class arranges independent regulating roller to rotary conveyor, when belt generation sideslip being detected, utilize regulating roller to the side applying effect of belt, to force it to return to middle position. Another class arranges lifting apparatus to the movable deflector roll of rotary conveyor, when belt generation sideslip being detected, just come the side (that is, belt is towards the side of its sideslip) of lifting activity deflector roll by lifting apparatus, thus force belt to return to normal operational position.
But, above-mentioned solution still has problems. Specifically, the side of belt is applied reactive force and rubs with belt simultaneously by regulating roller, and belt side edge can be caused in the course of time to accelerate abrasion. In addition, for flat belt conveyor, lifting apparatus can cause belt to tilt, and not only mineral can be caused to drop in correction operates, but also may cause correcting excessively. Moreover, the deviation detecting device supporting with these two kinds of deviation correcting devices all needs independent setting, and this correspondingly can increase number of components and cost. Therefore, this area needs a kind of technical scheme solving mining belt conveyor sideslip problem. Compared with above-mentioned prior art, belt can not be caused abrasion by the program, also mineral will be caused to drop and rectify a deviation excessively in correction operates, and one-piece construction is simpler and easy and cost is lower.
Summary of the invention
The present invention is intended to solve the problem. Specifically, the present invention is intended to solve existing mining belt conveyor automatic deviation rectifying device can cause abrasion to belt, or mineral can be caused to drop and rectify a deviation excessively in correction operates, and complicated integral structure and the higher problem of cost. Object for this reason, the present invention provides the automatic sideslip detection of a kind of novel mining belt conveyor and correcting device. Compared with prior art, belt can not be caused abrasion by this device, also mineral will be caused to drop and rectify a deviation excessively in correction operates, and one-piece construction is simpler and easy and cost is lower.
Specifically, the present invention provides the automatic sideslip detection of a kind of mining belt conveyor and correcting device. The detection of described automatic sideslip and correcting device are characterised in that the two ends of the driving roll being arranged on described mining belt conveyor, and the detection of described automatic sideslip and correcting device comprise: time position bar being connected to the two ends of described driving roll, this time position bar can be changed between softened state and closed state, under softened state, the outer end of described time position bar is opened and is therefore formed the conical butt that from inside to outside diameter increases gradually, in closed state, described time position bar remains cylindrical and has identical diameter with described driving roll; Pressure transmitter, it is embedded the inside at described go back to position bar, is applied to the described pressure returned on the bar of position during for feeling the belt deviation surveying mining belt conveyor; Returning position lever actuator, itself and described time position bar are embedded at the two ends of described driving roll accordingly, for driving the described position bar that returns so that it is transformed into softened state when belt deviation being detected; And controller, it is arranged to one with described time position lever actuator and is connected in Signal transmissions mode with described pressure transmitter, drives described return position bar arrival softened state for the described position lever actuator that returns of the order when described pressure transmitter detects belt deviation; Wherein said time position bar is the tubular structure of hollow and comprises multiple laths that nut is equal with size, the inner side end of described lath is movably attached on the periphery of described nut equally spacedly, the internal thread of described nut engages with the outside screw of the end being arranged on described driving roll, and the outboard end of described lath is connected to change between softened state and closed state with the operation of described time position lever actuator with described time position lever actuator; And wherein said driving roll comprises the dimple being arranged on its two ends, described time position lever actuator and described controller are arranged in described dimple fixingly.
Mining belt conveyor adopt the detection of above-mentioned automatic sideslip and the correcting device of the present invention can obtain multiple useful effect. First, the automatic sideslip detection of the present invention and correcting device force belt to return to normal operational position by increasing the diameter (specifically returning the diameter of a bar) at driving roll two ends, the side of belt both need not be applied frictional force by this kind of mode as regulating roller, also deflector roll and belt need not be made as lifting apparatus to become to tilt, therefore belt can not be caused abrasion by it, also mineral will be caused to drop and rectify a deviation excessively in correction operates. Secondly, in use, the two ends that time position bar only need to be installed to deflector roll (being driving roll in such scheme) are such as screwed to deflector roll two ends threadably, or can directly the two ends of deflector roll be processed into back the form of position bar, and do not need to arrange independent deviation correcting device, therefore, it is possible to reduce number of components and structure complexity significantly, and therefore reduce costs. Moreover, can changing in softened state and closed state incision owing to returning position bar, therefore pressure transmitter is by ingenious the inside being set to back position bar, so, when belt is pressed onto back on the bar of position because of sideslip, pressure transmitter just can directly detect the fact of belt deviation. So, it is not necessary to arranging special deviation detecting device, namely single parts return in a bar by being integrated into innovatively for sideslip detection and correction function.
When described time position bar comprises the nut multiple lath equal with size and the inner side end of described lath is movably attached on the periphery of described nut equally spacedly, just position bar can will be returned easily it will be installed to the end of driving roll by being screwed to by described nut on the outside screw of the end of described driving roll. Now, being consistent to ensure back the external diameter of position bar its external diameter and driving roll when being in closed state, the external diameter of described nut must be less than the external diameter of driving roll.
Alternatively, the two ends of described driving roll can not also arrange dimple, but described time position lever actuator and described controller is arranged on back in the cavity of position bar self. But, preferably adopt, owing to returning position lever actuator and controller, the mode being fixedly installed, therefore, dimple is set at the two ends of driving roll and will return position lever actuator and controller to be arranged in described dimple be preferred scheme fixingly.
In the automatic sideslip detection of above-mentioned mining belt conveyor with in the preferred implementation of correcting device, described time position lever actuator is magnetic valve, the outboard end of the lath of described time position bar is flexibly connected with the valve rod outer end of described magnetic valve, if described pressure transmitter detects belt deviation, then the valve rod of described magnetic valve outwards moves when receiving the signal of described controller thus described time position bar is driven into softened state. In the automatic sideslip detection of above-mentioned mining belt conveyor with in the preferred implementation of correcting device, described magnetic valve is step direct-acting type electromagnetic valve, it is thus possible to make the described position bar that returns be driven to multiple different softened state, so that the sideslip degree according to belt carries out rectification in various degree.
Those skilled in the art are it is understood that applying corrected intensity in various degree for sideslip in various degree is than more preferably. When returning the form that position lever actuator adopts step direct-acting type electromagnetic valve, just this kind of effect can be obtained, because the valve rod of this kind of magnetic valve can stretch out different distances, thus make back position bar obtain different stretching degrees or diameter increase degree, carry out the sideslip obtained in various degree and correct dynamics.
In the automatic sideslip detection of above-mentioned mining belt conveyor with, in the preferred implementation of correcting device, described automatic sideslip detects the one or more two ends being also arranged in the driven roll of described mining belt conveyor with correcting device. When the belt generation sideslip of transfer roller, will inevitably there is difference in the sideslip degree of the belt at different positions place, so, if each in driving roll and driven roll is provided with the detection of above-mentioned automatic sideslip and correcting device, then can carrying out correction in various degree for the different parts of belt, thus overall correction meeting is more in time, effect can be better.
Accompanying drawing explanation
Understanding the preferred embodiment of the present invention in conjunction with the drawings, the present invention is above-mentioned and other feature and advantage will become clearer, in accompanying drawing:
Fig. 1 is provided with the schematic side view of the automatic sideslip detection according to the present invention with the mining belt conveyor of correcting device.
Fig. 2 be provided with according to the present invention automatic sideslip detection and correcting device mining belt conveyor look closely schematic diagram.
Fig. 3 is the partial enlargement figure that the automatic sideslip being provided with according to the present invention detects the mining belt conveyor with correcting device, wherein returns a bar and is in softened state.
Fig. 4 is the partial enlargement figure that the automatic sideslip being provided with according to the present invention detects the mining belt conveyor with correcting device, wherein returns a bar and is in closed state.
Fig. 5 is the exploded view of the detection of the automatic sideslip according to the present invention and correcting device.
Fig. 6 is the outboard end schematic diagram returning position bar of the detection of the automatic sideslip according to the present invention and correcting device.
Embodiment
Detailed description the preferred embodiment of the present invention made with reference to the accompanying drawings is only exemplary in essence, it is not intended that restriction invention, its application, or uses. It should be noted that; although this preferred implementation discloses various concrete parameter and the details of the present invention; but those skilled in the art it is easily understood that; protection scope of the present invention is not limited to these parameters and details; when not deviateing the ultimate principle of the present invention; these parameters and details can be made amendment or equivalent replacement by those skilled in the art, and the embodiment after revising or replacing also will fall within protection scope of the present invention.
With reference first to Fig. 1, the figure shows the schematic side view of the mining belt conveyor 1 of automatic sideslip detection and the correcting device being provided with according to the present invention. Mining belt conveyor 1 comprises main frame 11, be arranged on main frame 11 driving roll 12, parallel with driving roll 12 be arranged on main frame 11 many driven rolls 13, be laid on driving roll 12 and the flat type belt 14 on driven roll 13 and be connected with driving roll 12 and be that it provides the motor 15 of power. It should be noted that, Fig. 1 is only the schematic diagram of mining belt conveyor 1, wherein illustrate only parts related to the present invention. Those skilled in the art are it is understood that the mining belt conveyor in practice obviously comprises other parts multiple.
Next consulting Fig. 2, what the figure shows the mining belt conveyor 1 of automatic sideslip detection and the correcting device being provided with according to the present invention looks closely schematic diagram. For the sake of clarity, Fig. 2 eliminates driven roll 13 and belt 14 be have employed omissive representation. As shown in Figure 2, the two ends of driving roll 12 are provided with the detection of the automatic sideslip according to the present invention and correcting device. As composition graphs 5 describes below, the detection of this automatic sideslip and correcting device comprise back position bar 120, pressure transmitter 121, return position lever actuator 122 and controller 123.
Each parts of the detection of automatic sideslip according to the present invention and correcting device are described in detail below in conjunction with Fig. 3 to 6. Fig. 3 is the partial enlargement figure that the automatic sideslip being provided with according to the present invention detects the mining belt conveyor with correcting device, wherein returns a bar and is in softened state. Fig. 4 is the partial enlargement figure that the automatic sideslip being provided with according to the present invention detects the mining belt conveyor with correcting device, wherein returns a bar and is in closed state. Fig. 5 is the exploded view of the detection of the automatic sideslip according to the present invention and correcting device. Fig. 6 is the outboard end schematic diagram returning position bar of the detection of the automatic sideslip according to the present invention and correcting device.
Consult Fig. 3 to 6, return the snap ring 1204 that position bar 120 comprises multiple equal-sized lath 1201 and the nut 1202 that the inner side end (being left-hand end in figures 3 and 4) of lath 1201 is flexibly connected the equidistantly multiple spokes 1203 that outboard end is flexibly connected and quantity is equal with lath 1201 and is flexibly connected with spoke 1203. Corresponding with nut 1202, the two ends of driving roll 12 are provided with outside screw (not shown), when nut 1202 is screwed onto on the outside screw on driving roll 12 two ends, returns position bar 120 and are just installed on driving roll 12. Return position bar 120 to change between softened state and closed state. Under softened state, the outer end of time position bar 120 is opened and is therefore formed the conical butt that from inside to outside diameter increases gradually, as shown in Figure 3. In closed state, time position bar 120 remains cylindrical and has identical diameter with described driving roll, as shown in Figure 4.
Pressure transmitter 121 is arranged on go back to the inside of position bar 120. Specifically, pressure transmitter 121 can be arranged on back in the internal cavities of multiple laths 1201 formation of position bar 120, can also being arranged between each lath 1201, as long as when belt 14 is pressed onto back on position bar 120 because of sideslip, pressure transmitter 121 can sense pressure to be changed. When pressure transmitter 121 be arranged on back position bar 120 lath 1201 formed internal cavities in time, just need the radial dimension that lath 1201 is accurately set, make when return position bar 120 be in closed state time (, when multiple lath 1201 is brought to together), together with the inner side of lath 1201 fits to pressure transmitter 121 but excessive pressure can not be applied, when being pressed onto back on position bar 120 because of sideslip with box lunch belt 14, pressure transmitter 121 can detect the change of obvious pressure thus send signal to controller 123. Pressure transmitter 121 can be pressure transmitter or the transmitter of any type, such as but not limited to strain gauge pressure sensor, ceramic pressure sensor, diffusion silicon pressure sensor, sapphire pressure sensor and piezo-electric pressure sensor etc. Application according to the present invention environment, pressure transmitter 121 preferably adopts strain gauge pressure sensor and piezo-electric pressure sensor.
In preferred implementation, time position lever actuator 122 and controller 123 are integrated into one, and return in position lever actuator 122 dimple (not shown) that fixing ground setting example is formed at driving roll 12 end as being welded to together with controller 123. For example, returning position lever actuator 122 can be magnetic valve 122. Magnetic valve 122 comprises valve rod 1221 and valve body 1222. In use, the outer end (being right-hand member in Figure 5) of valve rod 1221 is connected to back on the snap ring 1204 of position bar 120. In a non-operative state, valve rod 1221 is in contraction schedule, therefore drives snap ring 1204 and spoke 1203 to be also in contraction schedule, thus lath 1201 is in and gathers state and therefore make back position bar 120 be in closed state, as shown in Figure 4. When belt 14 is pressed onto back on position bar 120 because of sideslip, pressure transmitter 121 sends signal to controller 123, the valve rod 1221 of controller 123 order magnetic valve 122 stretches out, therefore snap ring 1204 and spoke 1203 is promoted, thus make lath 1201 arrive expansion state and therefore make back position bar 120 arrive softened state, as shown in Figure 3. About this point, it should be noted that, the operative relationship between valve rod 1221 with snap ring 1204 and spoke 1203 is just as support umbrella, and valve rod 1221 stretches out, and umbrella is softened, and valve rod 1221 is retracted, and umbrella is closed up.
Controller 123 can be the controller of any type, such as Combinational Logic Control device, selective laser sintering device etc., as long as it can receive signal that pressure transmitter 121 sends and can send operation signal to returning position lever actuator 122.
Those skilled in the art are it is understood that according to embody rule object, time position lever actuator 122 can adopt other forms outside magnetic valve. Such as, returning position lever actuator 122 can be hydro-pump, air pump etc., as long as it can stretch according to the order-driven valve rod of controller 123. When returning the form that position lever actuator 122 adopts magnetic valve, in preferred implementation, magnetic valve 122 can be step direct-acting type electromagnetic valve, it is thus possible to make back position bar 120 be driven to multiple different softened state, so that the sideslip degree according to belt 14 carries out correction in various degree.
In addition, although being described in conjunction with driving roll 12 in the application, the automatic sideslip detection of the present invention and correcting device obviously are not limited to be arranged on driving roll 12, its one or more two ends that can also be arranged in multiple driven roll 13. Those skilled in the art it is easily understood that, when there is sideslip in the belt 14 of transfer roller 1, will inevitably there is difference in the sideslip degree at different positions place, so, if each in driving roll 12 and driven roll 13 is provided with the detection of above-mentioned automatic sideslip and correcting device, then can carrying out correction in various degree for the different parts of belt 14, thus overall correction meeting is more in time, effect can be better.
Although describe the technical scheme of the present invention with reference to preferred implementation; but those skilled in the art it is easily understood that; protection scope of the present invention is not limited to these embodiments; when not deviateing the ultimate principle of the present invention; described enforcement mode and concrete technology feature wherein can being split, combine or be changed, the technical scheme after fractionation, combination or change will fall within protection scope of the present invention.
Claims (4)
1. the automatic sideslip detection of mining belt conveyor and correcting device, it is characterised in that, the detection of described automatic sideslip and correcting device are arranged on the two ends of the driving roll of described mining belt conveyor, and the detection of described automatic sideslip and correcting device comprise:
It is connected to time position bar at the two ends of described driving roll, this time position bar can be changed between softened state and closed state, under softened state, the outer end of described time position bar is opened and is therefore formed the conical butt that from inside to outside diameter increases gradually, in closed state, described time position bar remains cylindrical and has identical diameter with described driving roll;
Pressure transmitter, it is embedded the inside at described go back to position bar, is applied to the described pressure returned on the bar of position during for feeling the belt deviation surveying described mining belt conveyor;
Returning position lever actuator, itself and described time position bar are embedded at the two ends of described driving roll accordingly, for driving the described position bar that returns so that it is transformed into softened state when belt deviation being detected; And
Controller, it is arranged to one with described time position lever actuator and is connected in Signal transmissions mode with described pressure transmitter, drives described return position bar arrival softened state for the described position lever actuator that returns of the order when described pressure transmitter detects belt deviation,
Wherein, described time position bar is the tubular structure of hollow and comprises multiple laths that nut is equal with size, the inner side end of described lath is movably attached on the periphery of described nut equally spacedly, the internal thread of described nut engages with the outside screw of the end being arranged on described driving roll, the outboard end of described lath is connected to change between softened state and closed state with the operation of described time position lever actuator with described time position lever actuator, and
Wherein, described driving roll comprises the dimple being arranged on its two ends, and described time position lever actuator and described controller are arranged in described dimple fixingly.
2. the automatic sideslip detection of mining belt conveyor according to claim 1 and correcting device, it is characterized in that, described time position lever actuator is magnetic valve, the outboard end of the lath of described time position bar is flexibly connected with the valve rod outer end of described magnetic valve, if described pressure transmitter detects belt deviation, then the valve rod of described magnetic valve outwards moves when receiving the signal of described controller thus described time position bar is driven into softened state.
3. the automatic sideslip detection of mining belt conveyor according to claim 2 and correcting device, it is characterized in that, described magnetic valve is step direct-acting type electromagnetic valve, it is thus possible to make the described position bar that returns be driven to multiple different softened state, so that the sideslip degree according to belt carries out correction in various degree.
4. the automatic sideslip detection of mining belt conveyor according to any one of claim 1 to 3 and correcting device, it is characterized in that, one or more two ends that the detection of described automatic sideslip and correcting device are also arranged in the driven roll of described mining belt conveyor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410578638.3A CN104386414B (en) | 2014-10-24 | 2014-10-24 | The automatic sideslip detection of mining belt conveyor and correcting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410578638.3A CN104386414B (en) | 2014-10-24 | 2014-10-24 | The automatic sideslip detection of mining belt conveyor and correcting device |
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| Publication Number | Publication Date |
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| CN104386414A CN104386414A (en) | 2015-03-04 |
| CN104386414B true CN104386414B (en) | 2016-06-01 |
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| CN201410578638.3A Expired - Fee Related CN104386414B (en) | 2014-10-24 | 2014-10-24 | The automatic sideslip detection of mining belt conveyor and correcting device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104709669A (en) * | 2015-03-09 | 2015-06-17 | 浙江长兴森大竹木制品有限公司 | Conveying platform of automatic flow coating machine |
| CN114162524B (en) * | 2021-11-04 | 2022-07-22 | 中国矿业大学 | Automatic correcting mechanism for belt of mining conveyor |
| CN115849066A (en) * | 2023-03-02 | 2023-03-28 | 泰州永盛包装科技有限公司 | Double-width preprinting body paper production splicing edge correction operating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2872798B2 (en) * | 1990-10-25 | 1999-03-24 | 株式会社リコー | Belt detent device |
| KR20030095888A (en) * | 2002-06-15 | 2003-12-24 | 엘지.필립스 엘시디 주식회사 | Conveyer of liquid crystal panel |
| CN201857099U (en) * | 2010-11-26 | 2011-06-08 | 四川台沃农业科技股份有限公司 | Hollow drum of belt conveyer for fertilizer preparation |
| CN203497801U (en) * | 2013-08-29 | 2014-03-26 | 岱山县海星机械厂 | Emptying device for secondary processing of filter membrane |
| CN204161944U (en) * | 2014-10-24 | 2015-02-18 | 河北工程大学 | The automatic sideslip of mining belt conveyor detects and correcting device |
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