CN105858137A - Vibration-reduction mud scraper device for shield residue soil conveyor belt - Google Patents
Vibration-reduction mud scraper device for shield residue soil conveyor belt Download PDFInfo
- Publication number
- CN105858137A CN105858137A CN201610363994.2A CN201610363994A CN105858137A CN 105858137 A CN105858137 A CN 105858137A CN 201610363994 A CN201610363994 A CN 201610363994A CN 105858137 A CN105858137 A CN 105858137A
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- CN
- China
- Prior art keywords
- cleaning shoe
- mud
- vibration
- belt
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B65G45/00—Lubricating, cleaning, or clearing devices
- B65G45/10—Cleaning devices
- B65G45/12—Cleaning devices comprising scrapers
-
- 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
- B65G2207/00—Indexing codes relating to constructional details, configuration and additional features of a handling device, e.g. Conveyors
- B65G2207/20—Earthquake protection
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a vibration-reduction mud scraper device for a shield residue soil conveyor belt. The vibration-reduction mud scraper device comprises a support, a vibration reduction device and a mud scraper set. The mud scraper set is located below the belt and fixed to the vibration reduction device. A guide structure is arranged on the support. The vibration reduction device is used in cooperation with the guide structure so that the mud scraper set can roughly reciprocate in the vertical direction. The mud scraper set at least comprises two mud scrapers. Each mud scraper is arranged in the direction roughly perpendicular to the movement direction of the belt, and the acting force between the mud scrapers and the belt is sequentially increased in the movement direction of the belt. Mud scraping is conducted through the multiple mud scrapers, loose mud, mud tightly attached and mud tightly attached to the surface of the belt are sequentially scraped away, and the mud on the belt can be thoroughly removed.
Description
Technical field
Present invention relates particularly to a kind of shield dregs conveyer belt vibration damping cleaning shoe device.
Background technology
Earth pressure balanced shield, EPBS is the engineering method that Urban Metro Construction is conventional now, is unearthed by screw machine and belt feeder in work progress.
But during with belt feeder backward muck haulage, the cleaning shoe (cleaning shoe on drivewheel) that shield machine carries, to belt
Machine to scrape mud effect bad, easily cause the soil body below belt feeder and pile up, make belt feeder frictional resistance become big, cause belt
Machine overcurrent, makes the frequent stop jumping of belt feeder, has a strong impact on construction speed.
Although having patent to disclose at present utilize lever principle, one end of lever arranges counterweight, and the other end arranges scraper, scrapes
Mud device is adjacent under the effect of counterweight and between belt, makes scraping power stable, decreases the abrasion of conveyer belt, but at one group
Under lever, can only be a scraper, although ensure that stablizing of scraping power, but due to only one of which scraper, scrape mud
Effect is bad.
Also have patent to regulate the tensioning degree of belt by arranging regulating wheel, and sleeve, sleeve are set on regulating wheel side
Spring is inside set, spring is fixed with and scrapes trowel, belt is played scrape mud effect simply scrape trowel, owing to simply one is scraped mud
Cutter, and on belt, the earth of close belt surface sometimes and is fitted more tight between belt, once scrapes mud and is difficult to ensure that mud
Effective removal of soil.
The most at home on market, during the muck haulage outward of shield belt feeder, also do not occur that one can effectively clear up belt
Machine sticks soil, the device making belt feeder the most not too much to stop because band mud.It is therefore desirable to one both can have
Effect strikes off the earth on belt, can accommodate again the more soil body, the device that maybe can be transported in time by the earth that scrape off.
Summary of the invention
The present invention is to solve the problems referred to above, it is proposed that a kind of shield dregs conveyer belt vibration damping cleaning shoe device, this device is installed
Between belt and dregs transportation machine sleeper, this device is utilized to can reach operationally success scraping and pacify installation and dismantling easily
The purpose unloaded.
To achieve these goals, the present invention adopts the following technical scheme that
A kind of shield dregs conveyer belt vibration damping mud-scraping apparatus, including support, vibration absorber, cleaning shoe group, wherein cleaning shoe group
It is positioned at the lower section of belt, and is fixed on vibration absorber；Being provided with guide frame on support, vibration absorber is joined with guide frame
Close, enable cleaning shoe group to move back and forth substantially along vertical direction；Cleaning shoe group at least includes 2 cleaning shoes, and cleaning shoe is also
Row are arranged, and are generally perpendicular to the direction of motion of belt, along the direction of motion of belt, the active force between cleaning shoe and belt
Increase successively.
Vibration absorber allows cleaning shoe group vertically to move back and forth, and the active force between regulation belt and cleaning shoe prevents
Active force is excessive to cause serious harm to belt.
Guide frame can limit the direction of motion of cleaning shoe group, and the motion making cleaning shoe group is more regular, more stable.
Cleaning shoe group includes multiple cleaning shoe, and along the direction of motion of belt, the active force between cleaning shoe and belt increases successively,
By first removing the earth little with belt force, then the mode of the earth bigger with belt force can be removed, more thorough
The earth on belt is removed on ground, the end, it is ensured that effective removal of earth on belt.
Preferably, described vibration absorber is one group of vibration-proof structure, and each cleaning shoe in cleaning shoe group is each attached to vibration absorber
On, along belt movement direction, cleaning shoe height topmost increases successively.
One group of vibration-proof structure is multiple cleaning shoe group vibration dampings simultaneously, by regulation cleaning shoe height topmost, regulates cleaning shoe
And the active force between belt, can simplify the structure of device, makes device more integrated.
It is further preferred that the relative position of each cleaning shoe in cleaning shoe group is fixed by connector, connector and support
On guide frame coordinate, make each cleaning shoe in cleaning shoe group be synchronized with the movement.
Preferably, described vibration absorber includes organizing vibration-proof structure more, and each cleaning shoe in cleaning shoe group is separately fixed at one group
On vibration-proof structure.
Often group vibration-proof structure controls different cleaning shoes, can improve the motility scraping mud.
It is further preferred that be provided with multiple gathering sill on described support, the two ends of each cleaning shoe are fastened on support respectively
In gathering sill, cleaning shoe, support and ground surround the space for accommodating the soil body.
Further preferred, the lower section at the two ends of each cleaning shoe is provided with a vibration-proof structure.
Preferably, the lower section of described support is provided with guide rail, guide rail is provided with the soil body and accepts vehicle.
It can be belt that the soil body accepts vehicle, it is also possible to for other structural member, can be along guide rail under the drive of machine
Motion, transports the soil body that the cleaning shoe of undertaking scrapes off, mud-scraping apparatus can be made to run continuously, solve below belt feeder
The soil body is piled up, and makes belt feeder frictional resistance become big, causes belt feeder overcurrent, the problem making the frequent stop jumping of belt feeder.
Preferably, described cleaning shoe group includes 3-5 cleaning shoe.
Preferably, described vibration-proof structure includes screw rod, spring, location nut and mounting groove, and screw rod includes standing part and work
Dynamic part, described spring housing is combined on screw rod, and connecting portion is divided and movable part, and one end of spring and fixed part divide it
Between connect and have pad, the other end of spring is provided with location nut, and location nut coordinates with the movable part of screw rod, regulation bullet
The decrement of spring；Described mounting groove is fixed on one end of the movable part of screw rod.
It is further preferred that the bottom of described support is provided with set screw, the lower section of described screw rod is arranged in set screw.
Screw rod can move up and down under pressure in installing hole, and spring plays reset cushioning effect.
The operation principle of the present invention is:
When muck haulage belt is when transporting vertical tremor during dregs, and damping screw rod can regulate the height of the cleaning shoe page voluntarily
Degree, it is ensured that the cleaning shoe page effectively contacts with muck haulage belt, coordinates many group cleaning shoe pages to work, according to fortune simultaneously
Damping nut is tightened in the direction (relative to cleaning shoe) that soil belt advances successively, it is ensured that the cleaning shoe page connects with muck haulage belt
Touching active force promptly to increase, cleaning shoe above first strikes off earth loose on belt, and cleaning shoe below can strike off closely
Paste the earth on belt, scraping effect is effectively ensured.
The invention have the benefit that
1, the present invention carries out scraping mud by multiple cleaning shoes, strikes off loose earth, the more close earth and tightly of fitting successively
It is fitted in the earth of belt surface, can the most thoroughly remove the earth on belt；
2, the space below the cleaning shoe of the present invention is relatively big, can accommodate the more soil body, it is not necessary to frequently remove the soil body of accumulation,
And dependency structure can be arranged transferred out by the too much soil body, it is to avoid the soil body below belt feeder is piled up, and makes belt feeder
Frictional resistance becomes big, causes belt feeder overcurrent, makes the phenomenon of the frequent stop jumping of belt feeder；
3, the simple in construction of the present invention, easy accessibility, it is not necessary to original belt feeder is reequiped.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention；
Fig. 2 is the cleaning shoe page schematic diagram of the present invention；
Fig. 3 is the damping screw rod schematic diagram of the present invention；
Fig. 4 is the cleaning shoe rail groove schematic diagram of the present invention；
Wherein, 1-1, cleaning shoe, 1-2, gathering sill, 1-3, vibration damping screw rod, 1-4, dregs delivery track, 2-1, cleaning shoe
Channel-section steel, 2-2, cleaning shoe sheet, 2-3, location steel bar, 2-4, set screw, 3-1, vibration damping screw end head channel-section steel, 3-2, spiral shell
Bar, 3-3 positions nut, 3-4, shock-absorbing spring, 3-5, pad, 4-1, rail groove, 4-2, limited bayonet, 4-3, location
Screw.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of shield dregs conveyer belt vibration damping mud-scraping apparatus, including support, vibration absorber, cleaning shoe group,
Wherein cleaning shoe group is positioned at the lower section of belt, and is fixed on vibration absorber；Guide frame, vibration absorber it is provided with on support
Coordinate with guide frame, enable cleaning shoe group to move back and forth substantially along vertical direction；Cleaning shoe group at least includes that 2 are scraped mud
Plate, each cleaning shoe is generally perpendicular to the direction of motion of belt and arranges, and along the direction of motion of belt, cleaning shoe and belt it
Between active force increase successively.
Embodiment 1
Vibration absorber is one group of vibration-proof structure, and each cleaning shoe 1-1 in cleaning shoe group is each attached on vibration absorber, shares one
Group vibration absorber, along belt movement direction, cleaning shoe 1-1 height topmost increases successively, it is ensured that cleaning shoe 1-1 with
Active force between belt increases successively.
One group of vibration-proof structure includes two vibration-proof structures symmetrically arranged relative to belt, and vibration-proof structure can be existing vibration damping knot
Structure, such as spring vibration absorber, the vibration absorber in similar bicycle, motor vehicles.The line of two vibration-proof structures and belt
Direction of motion less perpendicular, and be positioned at the lower section of cleaning shoe group.
The relative position of each cleaning shoe 1-1 in cleaning shoe group by connector (connector can be similar to gripper shoe structure,
By arranged side by side for multiple cleaning shoe 1-1 generally vertical fixing, and the height of regulation cleaning shoe is different, makes the position between cleaning shoe relative
Fixing) fixing, connector coordinates with the guide frame on support, makes each cleaning shoe 1-1 in cleaning shoe group be synchronized with the movement.
As in figure 2 it is shown, each cleaning shoe 1-1 includes cleaning shoe page 2-2 and cleaning shoe channel-section steel 2-1, cleaning shoe channel-section steel 2-1
And being fixed by location steel bar 2-3 and set screw between cleaning shoe page 2-2, the two ends of cleaning shoe channel-section steel 2-1 are extended and are scraped
Mud plate page 2-2, the part extended can be used to be installed on vibration absorber cleaning shoe page 2-2.
Guide frame can be the gathering sill being arranged on support, it is also possible to for the guide post being vertically arranged, when for gathering sill,
The cleaning shoe channel-section steel 2-1 that the two ends of each cleaning shoe 1-1 extend out is fastened in gathering sill, and and gathering sill 1-2 between
Leave gap, enable cleaning shoe page 2-2 to move up and down along gathering sill.
When guide frame is guide post, boring a hole on the connector of cleaning shoe assembly, hole is setting up and down, the lower end of guide post
Fixing on the ground, upper end is through the hole on connector, and the smooth surface of guide post arranges, makes connector be limited in guide post
Position, under the effect of belt, cleaning shoe assembly along guide post direction move back and forth regulation.
The number of guide post is preferably 2 and more than 2, can preferably play guiding and positioning action.
The lower end of vibration absorber can be fixed on the base of support, it is also possible to installs alone fixing.
Embodiment 2
Vibration absorber can be to organize vibration-proof structure more, and each cleaning shoe in cleaning shoe group is separately fixed on one group of vibration-proof structure.
One group of vibration-proof structure includes two vibration-proof structures, and the two vibration-proof structure lays respectively at the both sides of cleaning shoe, simultaneously for scraping
The motion vibration damping of mud plate.Being provided with multiple gathering sill on support, the two ends of each cleaning shoe are fastened on the gathering sill of support respectively
In, cleaning shoe, support and ground surround the space for accommodating the soil body.
It is also provided with guide rail in the lower section of support, guide rail is provided with the soil body and accepts vehicle.The soil body is accepted and is transported dress
Putting can be belt, it is also possible to for other structural member, such as steel plate, the end of steel plate arranges sprocket wheel, sprocket wheel and chain interoperation,
Under the drive of motor, move, the soil body that the cleaning shoe of undertaking scrapes off is transported, mud-scraping apparatus can be made to transport continuously
OK, solve the soil body below belt feeder and pile up, make belt feeder frictional resistance become big, cause belt feeder overcurrent, make belt
The problem of the frequent stop jumping of machine.
Cleaning shoe group can include 3-5 cleaning shoe, preferably 4 cleaning shoes.
As it is shown on figure 3, described vibration-proof structure includes screw rod 3-2, shock-absorbing spring 3-4, location nut 3-3 and mounting groove, peace
Tankage is that vibration damping screw end head channel-section steel 3-1, screw rod 3-2 include standing part and movable part, described shock-absorbing spring 3-4 fit
On screw rod 3-2, and connecting portion is divided and movable part, and being connected between one end of shock-absorbing spring 3-4 and standing part has pad
Sheet 3-5, the other end of shock-absorbing spring 3-4 is provided with the movable part distribution of location nut 3-3, location nut 3-3 and screw rod 3-2
Close, the decrement of regulation shock-absorbing spring 3-4；Described mounting groove is fixed on one end of the movable part of screw rod 3-2.
The bottom of described support is provided with set screw 4-3, and the lower section of described screw rod 3-2 is arranged in set screw 4-3.
Specific embodiment be presented herein below:
As Figure 1-4, a kind of shield dregs conveyer belt vibration damping cleaning shoe device, including cleaning shoe 1-1, vibration damping screw rod 1-3,
Cleaning shoe rail groove 1-3, dregs delivery track 1-4.Wherein, cleaning shoe channel-section steel 2-1 is engaged with vibration damping screw end head channel-section steel 3-1
Install, make cleaning shoe 1-1 can move up and down in cleaning shoe gathering sill 1-2.
Described cleaning shoe 1-1 includes 1100mm × 200mm cleaning shoe sheet 2-2,5# cleaning shoe channel-section steel 2-1 1.5m length altogether, uses
Cleaning shoe sheet 2-2 is positioned on cleaning shoe channel-section steel 2-1 by set screw 2-4, and cleaning shoe channel-section steel 2-1 can be with vibration damping screw end head
Channel-section steel 3-1 is engaged.
Described vibration damping screw rod 3-1 includes 5# channel-section steel 3-15cm length, M24 nut 3-3, M24 screw rod 3-2, ф 26*180mm
Spring 3-4, M24 pad 3-5.
The described mud version rail groove 1-4 that scrapes is welded the track constituting wide 40mm by the 5# channel-section steel of two sections of 300mm and 200mm,
For assembling one group of cleaning shoe 1-1 and being positioned at conveyor rail 1-4, vibration damping screw rod 1-3 is by limited bayonet 4-2 and determines
Position screw 4-3 is positioned on dregs delivery track 1-4, and the up-down vibration for cleaning shoe 1-1 provides track.
A kind of operational approach utilizing said apparatus, comprises the following steps:
(1) the cleaning shoe rail groove 4-1 of two group of four row is symmetrically welded on conveyer two deslagging soil delivery track 1-4, makes
The position of each row's rail groove notch is on same straight line, it is ensured that the cleaning shoe 1-1 installed afterwards and conveyor rail 1-4 hangs down
Directly；
(2) limited bayonet 4-2 is welded on outside the I-steel of cleaning shoe rail groove 4-1 notch lower conveyor track 1-4
On edge, vibration damping screw rod 1-3 is enable to be just passed through bayonet socket steel disc and consistent with cleaning shoe rail groove 1-2 direction；
(3) during dregs transportation machine works, the location nut 3-3 above shock-absorbing spring 3-4 is raised so that vibration damping
Spring 3-4 is in relaxed state, is then pressed downward against shock-absorbing spring 3-4 so that the vibration damping screw end head channel-section steel of vibration damping screw rod 1-3
3-1 is in outside gathering sill 1-2, places cleaning shoe 1-1 so that scrape mud channel-section steel 2-1 and sting completely with vibration damping screw end head channel-section steel 3-1
Close, after loosen shock-absorbing spring 3-4 and make cleaning shoe 1-1 move to top on gathering sill, suitably lower location nut 3-3,
Cleaning shoe 1-1 is effectively contacted with muck haulage belt, when muck haulage belt is when transporting up-down vibration during dregs, vibration damping spiral shell
Bar 1-3 can regulate the height of cleaning shoe 1-1 voluntarily, and scraping effect is effectively ensured.
Although the detailed description of the invention of the present invention is described by the above-mentioned accompanying drawing that combines, but not limit to invention protection domain
System, one of ordinary skill in the art should be understood that, on the basis of technical scheme, those skilled in the art need not
Pay various amendments that creative work can make or deformation is the most within the scope of the present invention.
Claims (10)
1. a shield dregs conveyer belt vibration damping mud-scraping apparatus, it is characterised in that: include support, vibration absorber, cleaning shoe group,
Wherein cleaning shoe group is positioned at the lower section of belt, and is fixed on vibration absorber；Guide frame, vibration absorber it is provided with on support
Coordinate with guide frame, enable cleaning shoe group to move back and forth substantially along vertical direction；Cleaning shoe group at least includes that 2 are scraped mud
Plate, cleaning shoe is set up in parallel, and is generally perpendicular to the direction of motion of belt；Along the direction of motion of belt, cleaning shoe and belt
Between active force increase successively.
Vibration damping mud-scraping apparatus the most according to claim 1, it is characterised in that: described vibration absorber is one group of vibration-proof structure,
Each cleaning shoe in cleaning shoe group is each attached on vibration absorber, and along belt movement direction, cleaning shoe height topmost depends on
Secondary increase.
Vibration damping mud-scraping apparatus the most according to claim 2, it is characterised in that: the phase of each cleaning shoe in cleaning shoe group
Being fixed position by connector, connector coordinates with the guide frame on support, makes each cleaning shoe in cleaning shoe group same
Step motion.
Vibration damping mud-scraping apparatus the most according to claim 1, it is characterised in that: described vibration absorber includes organizing vibration damping knot more
Structure, each cleaning shoe in cleaning shoe group is separately fixed on one group of vibration-proof structure.
Vibration damping mud-scraping apparatus the most according to claim 4, it is characterised in that: it is provided with multiple gathering sill on described support,
The two ends of each cleaning shoe are fastened in the gathering sill of support respectively, and cleaning shoe, support and ground surround for accommodating the soil body
Space.
Vibration damping mud-scraping apparatus the most according to claim 5, it is characterised in that: the lower section at the two ends of each cleaning shoe is all provided with
It is equipped with a vibration-proof structure.
Vibration damping mud-scraping apparatus the most according to claim 1, it is characterised in that: the lower section of described support is provided with guide rail,
It is provided with the soil body on guide rail and accepts vehicle.
Vibration damping mud-scraping apparatus the most according to claim 1, it is characterised in that: described cleaning shoe group includes that 3-5 is scraped
Mud plate.
9. according to the arbitrary described vibration damping mud-scraping apparatus of claim 2-8, it is characterised in that: described vibration-proof structure include screw rod,
Spring, location nut and mounting groove, screw rod includes that standing part and movable part, described spring housing are combined on screw rod, and even
Connecing standing part and movable part, being connected between one end of spring and standing part has pad, and the other end of spring is provided with fixed
Position nut, location nut coordinates with the movable part of screw rod, the decrement of regulation spring；Described mounting groove is fixed on screw rod
One end of movable part.
Vibration damping mud-scraping apparatus the most according to claim 9, it is characterised in that: the bottom of described support is provided with location
Screw, the lower section of described screw rod is arranged in set screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610363994.2A CN105858137B (en) | 2016-05-27 | 2016-05-27 | A kind of shield dregs conveyer belt vibration damping cleaning shoe device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610363994.2A CN105858137B (en) | 2016-05-27 | 2016-05-27 | A kind of shield dregs conveyer belt vibration damping cleaning shoe device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105858137A true CN105858137A (en) | 2016-08-17 |
| CN105858137B CN105858137B (en) | 2018-10-12 |
Family
ID=56642344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610363994.2A Active CN105858137B (en) | 2016-05-27 | 2016-05-27 | A kind of shield dregs conveyer belt vibration damping cleaning shoe device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105858137B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2054504B (en) * | 1979-07-06 | 1983-02-16 | Cisco Polymers Ltd | Conveyor belt scraper |
| CN2784367Y (en) * | 2005-03-31 | 2006-05-31 | 上海宝钢生产协力公司 | Material clearing unit of belt conveyor |
| JP2014043332A (en) * | 2012-08-28 | 2014-03-13 | Mafren Kk | Belt cleaner |
| CN203833181U (en) * | 2013-12-13 | 2014-09-17 | 中国神华能源股份有限公司 | Sweeper used for belt conveyor and belt conveyor |
| CN205634028U (en) * | 2016-05-27 | 2016-10-12 | 山东大学 | Shield constructs dregs conveyer belt damping cleaning shoe device |
-
2016
- 2016-05-27 CN CN201610363994.2A patent/CN105858137B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2054504B (en) * | 1979-07-06 | 1983-02-16 | Cisco Polymers Ltd | Conveyor belt scraper |
| CN2784367Y (en) * | 2005-03-31 | 2006-05-31 | 上海宝钢生产协力公司 | Material clearing unit of belt conveyor |
| JP2014043332A (en) * | 2012-08-28 | 2014-03-13 | Mafren Kk | Belt cleaner |
| CN203833181U (en) * | 2013-12-13 | 2014-09-17 | 中国神华能源股份有限公司 | Sweeper used for belt conveyor and belt conveyor |
| CN205634028U (en) * | 2016-05-27 | 2016-10-12 | 山东大学 | Shield constructs dregs conveyer belt damping cleaning shoe device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105858137B (en) | 2018-10-12 |
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