CN110293055A - A kind of multi-stage oscillating screen of Rare Earth Production - Google Patents
A kind of multi-stage oscillating screen of Rare Earth Production Download PDFInfo
- Publication number
- CN110293055A CN110293055A CN201910573491.1A CN201910573491A CN110293055A CN 110293055 A CN110293055 A CN 110293055A CN 201910573491 A CN201910573491 A CN 201910573491A CN 110293055 A CN110293055 A CN 110293055A
- Authority
- CN
- China
- Prior art keywords
- screening
- screening frame
- rare earth
- frame
- mounting rod
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
- B07B1/34—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen
- B07B1/343—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen with mechanical drive elements other than electromagnets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
Abstract
The present invention relates to a kind of multi-stage oscillating screen more particularly to a kind of multi-stage oscillating screens of Rare Earth Production.Technical problem of the invention is: one kind is provided and is occupied little space, vibration consumption little energy, while the multi-stage oscillating screen of Rare Earth Production that web plate is not easy to plug.Implementer's case of the invention are as follows: a kind of multi-stage oscillating screen of Rare Earth Production includes bottom plate, the first mounting rod, vibration device, second mounting rod etc.；Bottom plate top left side is equipped with the first mounting rod.The present invention can carry out multistage screening to rare earth to improve screening efficiency, shorten screening time by vibration device and screening plant, improve the practicability of equipment, the first screening frame, the second screening frame and the third screening frame of the equipment are arc, save the space of equipment installation, and web plate is also arc, such rare earth is easier to slide, so that the hole on web plate will not block easily.
Description
Technical field
The present invention relates to a kind of multi-stage oscillating screen more particularly to a kind of multi-stage oscillating screens of Rare Earth Production.
Background technique
Rare earth has the title of industrial " gold " can be with other materials group since it is with physical characteristics such as excellent photoelectromagnetics
At different properties, new material various in style, most significant function is exactly to increase substantially the quality and property of other products
Energy.Rare earth in process, needs to classify to mixing, and raw material of different sizes is sorted out to come.
Currently, carrying out screening to rare earth uses vibrating screen, current vibrating screen is all the level by driving multilayer
Web plate vibrate simultaneously, rare earth is sieved with this, such mode has the following disadvantages, the web plate occupied space of plane
Greatly, the energy consumed when work is more, while the web plate of plane is easy to cause the blanking hole on web plate to be blocked when sieving rare earth
Plug.
Therefore it needs to design one kind to occupy little space, vibration consumption little energy, while the Rare Earth Production that web plate is not easy to plug
Multi-stage oscillating screen.
Summary of the invention
Existing rare earth vibrating screen occupied space is big, consumption energy is big, the susceptible to plugging disadvantage of web plate in order to overcome, therefore,
Technical problem of the invention is: one kind is provided and is occupied little space, vibration consumption little energy, while the rare earth that web plate is not easy to plug is raw
The multi-stage oscillating screen of production.
Implementer's case of the invention are as follows: a kind of multi-stage oscillating screen of Rare Earth Production includes bottom plate, the first installation
Bar, vibration device, the second mounting rod, screening plant and shock-absorbing supporting device, bottom plate top left side be equipped with the first mounting rod, first
Mounting rod is equipped with the vibration device for driving rare earth vibrate up and down screening, and bottom plate top right side is equipped with the second mounting rod, the
Two mounting rods are equipped with the screening plant that vibration screening is carried out to rare earth, and it is gentle that the first mounting rod top is equipped with support screening plant
With the shock-absorbing supporting device of impact force.
It is further preferred that vibration device include decelerating motor, gear wheel, bearing block, pinion gear, shaft, mounting blocks,
Threaded rod and the first convex block, the first mounting rod are equipped with decelerating motor, are connected on the output shaft of decelerating motor by shaft coupling
Shaft is set in shaft there are two gear wheel, and the first mounting rod is equipped with upper and lower two bearing blocks, and interference connects in metal (upper seat
It is connected to shaft, interference is connected with pinion gear on upper lower rotary shaft, and pinion gear is engaged with gear wheel, and shaft right end is equipped with installation
Block has been connected through a screw thread at least two threaded rods in mounting blocks, and threaded rod both ends are equipped with the first convex block.
It is further preferred that screening plant include the first screening frame, the second screening frame, third screening frame, the second convex block,
Blanking plate, the second mounting rod front side are uniformly provided at least two blanking plates, and blanking plate overlaps in vertical direction, top
Left part rotary type is equipped with the first screening frame in blanking plate, and left part rotary type is equipped with the second screening frame, lower part in the blanking plate at middle part
Blanking plate in rotary type be equipped with third screening frame, the first screening frame and second screening frame bottom be arc web plate, first
Web plate aperture in screening frame is greater than the web plate aperture in the second screening frame, and it is solid slab, the first screening that third, which screens frame bottom,
Frame, the second screening frame and third screening frame bottom left are equipped with the second convex block, and the second convex block is located above the first convex block.
It is further preferred that shock-absorbing supporting device includes block, baffle, damper and support rod, the first screening frame and
Second screening frame left part is equipped with the block that front and back is one group, and the first mounting rod is equipped with baffle identical with block group number, gear
Plate and block overlap in vertical direction, and baffle right part is equipped with damper, and damper is located at below block, at the top of bottom plate
Left side is equipped with support rod, and support rod is located at third screening frame bottom.
It is further preferred that further including having L shape mounting rod, strut, arc guide rod, arcuated sliding bush and elastic component, before bottom plate
Two middle side parts are equipped with L shape mounting rod afterwards, and the strut that front and back is one group, strut group number and blanking plate are equipped on the left of L shape mounting rod
Number is identical, and strut bottom left is equipped with arc guide rod, and slidingtype is equipped with arcuated sliding bush on arc guide rod, arcuated sliding bush with
It is equipped with elastic component between strut, the arcuated sliding bush of front and rear sides and the first screening frame, the second screening frame and third screening frame
The connection of front and rear sides left part.
It is further preferred that further including having screen frame, push rod and link block, bottom blanking plate right part rotary type is equipped with net
Frame, the second mounting rod lower front rotary type are equipped with push rod, and push rod right end is contacted with screen frame bottom, third screening frame bottom right
Equipped with link block, link block is contacted with push rod.
Compared with prior art, the present invention has the advantage that the present invention can be right with screening plant by vibration device
Rare earth carries out multistage screening to improve screening efficiency, shorten screening time, improves the practicability of equipment, the first sieve of the equipment
Selecting frame, the second screening frame and third screening frame is arc, saves the space of equipment installation, and web plate is also arc, so
Rare earth is easier to slide, so that the hole on web plate will not block easily.
Damper can mitigate impact force of second screening frame to baffle of the first screening frame, while can screen to first
Frame and the second screening frame play a supportive role, and keep the second screening frame of the first screening frame more stable when working, support rod is to third
Screening frame has supporting role, improves the service life of equipment.
Detailed description of the invention
Fig. 1 is schematic view of the front view of the invention.
Fig. 2 is vibration device part right side structural representation of the invention.
The meaning of appended drawing reference in figure: 1, bottom plate, the 2, first mounting rod, 3, decelerating motor, 4, gear wheel, 5, bearing block,
6, pinion gear, 7, shaft, 8, mounting blocks, 81, threaded rod, the 9, first convex block, the 10, second mounting rod, the 11, first screening frame, 12,
Second screening frame, 13, third screening frame, the 131, second convex block, 14, blanking plate, 15, block, 16, baffle, 17, damper, 18,
Support rod, 19, L shape mounting rod, 20, strut, 21, arc guide rod, 22, arcuated sliding bush, 23, elastic component, 24, screen frame, 25, push away
Bar, 26, link block.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment 1
Please refer to Fig. 1 and Fig. 2, a kind of multi-stage oscillating screen of Rare Earth Production, include bottom plate 1, the first mounting rod 2, vibration device,
Second mounting rod 10, screening plant and shock-absorbing supporting device, 1 top left side of bottom plate are connected with the first mounting rod 2 by bolt, the
One mounting rod 2 is equipped with the vibration device for driving rare earth vibrate up and down screening, and 1 top right side of bottom plate is equipped with the second mounting rod
10, the second mounting rod 10 is equipped with the screening plant that vibration screening is carried out to rare earth, and 2 top of the first mounting rod is equipped with support screening
Device and the shock-absorbing supporting device for mitigating impact force.
The present apparatus operates in this way, and the specific operation method is as follows: needing to carry out rare earth using the present apparatus in user more
When grade screening, the rare earth sieved is slowly added into screening plant first, restarts vibration device and drives screening
Device carries out vibration screening to rare earth, and screening plant can carry out multistage screening to rare earth to improve screening efficiency, shorten and screen
Time, the practicability of equipment is improved, shock-absorbing supporting device can mitigate vibration device to the impact force of screening plant, to screening
Device is played a supporting role, so that screening plant is more stable when screening, improves the service life of equipment, rare earth screening is completed
After close vibration device, by screening complete rare earth collect.
Please refer to Fig. 1 and Fig. 2, vibration device include decelerating motor 3, gear wheel 4, bearing block 5, pinion gear 6, shaft 7,
Mounting blocks 8, threaded rod 81 and the first convex block 9 are connected with decelerating motor 3 by bolt on first mounting rod 2, decelerating motor 3
Shaft 7 is connected with by shaft coupling on output shaft, is set in shaft 7 there are two gear wheel 4, the first mounting rod 2 is equipped with upper and lower two
A bearing block 5, interference is connected with shaft 7 in metal (upper seat 5, and interference is connected with pinion gear 6, small tooth on upper lower rotary shaft 7
Wheel 6 is engaged with gear wheel 4, and 7 right end of shaft is equipped with mounting blocks 8, is connected through a screw thread in mounting blocks 8 there are two threaded rod 81,
81 both ends of threaded rod are equipped with the first convex block 9.
The present apparatus operates in this way, and the specific operation method is as follows: driving screening plant pair when needing to start vibration device
When rare earth carries out vibrosieve, user starts the rotation of decelerating motor 3 first, and the rotation of decelerating motor 3 drives shaft 7 to rotate, shaft 7
Rotation drives gear wheel 4 to rotate, and the rotation of gear wheel 4 drives shaft 7 to rotate by pinion gear 6, and the rotation of shaft 7 drives mounting blocks 8
Rotation, the rotation of mounting blocks 8 drive the rotation of the first convex block 9 by threaded rod 81, and the rotation of the first convex block 9 drives screening plant to rare earth
Vibrosieve is carried out, closes decelerating motor 3 after the completion of rare earth screening, before starting decelerating motor 3 is vibrated, user can lead to
It crosses and turns threaded rod 81 to adjust the distance between the first convex block 9 and mounting blocks 8, so can change the vibration width of screening plant
Degree so preferably can carry out multi-stage screening to rare earth.
Referring to Fig. 1, screening plant includes that the first screening frame 11, the second screening frame 12, third screening frame 13, second are convex
Block 131, blanking plate 14 are uniformly provided with three blanking plates 14 on front side of second mounting rod 10, and blanking plate 14 has part in vertical direction
It is overlapped, left part rotary type is equipped with the first screening frame 11 in the blanking plate 14 on top, and left part rotary type is set in the blanking plate 14 at middle part
There is the second screening frame 12, rotary type is equipped with third screening frame 13, the first screening frame 11 and the second screening in the blanking plate 14 of lower part
The embedded web plate equipped with arc in 12 bottom of frame, the web plate aperture in the first screening frame 11 are greater than the net in the second screening frame 12
Panel aperture, 13 bottom of third screening frame are solid slab, and the first screening frame 11, the second screening frame 12 and 13 bottom of third screening frame are left
Side is equipped with the second convex block 131, and the second convex block 131 is located at 9 top of the first convex block.
The present apparatus operates in this way, and the specific operation method is as follows: when user start vibration device drive screening plant into
When row vibration, when the highest point of the first convex block 9 is turned to close to the second convex block 131, the second convex block 131 is pushed to move upwards, the
Two convex blocks 131, which move upwards, drives the first screening frame 11, the second screening frame 12 and third screening frame 13 to move upwards, when first convex
When the highest point of block 9 leaves the second convex block 131, the first screening frame 11, the second screening frame 12 and third screening frame 13 are multiple because of gravity
Position drives rare earth in 13 internal vibration of the first screening frame 11, the second screening frame 12 and third screening frame, the first screening frame repeatedly
Rare earth in 11 less than web plate aperture is fallen into the second screening frame 12, and the rare earth in the second screening frame 12 less than web plate aperture is fallen into
In third screening frame 13, rare earth in last first screening frame 11, the second screening frame 12 and third screening frame 13 is from blanking plate 14
Outflow is collected.
Referring to Fig. 1, shock-absorbing supporting device includes block 15, baffle 16, damper 17 and support rod 18, the first screening
It is one group of block 15 that frame 11 and 12 left part of the second screening frame, which are equipped with front and back, on the first mounting rod 2 by bolt be connected with
The identical baffle 16 of 15 groups of numbers of block, baffle 16 overlap with block 15 in vertical direction, and 16 right part of baffle, which is equipped with, to be subtracted
Device 17 is shaken, damper 17 is located at 15 lower section of block, and 1 top left side of bottom plate is equipped with support rod 18, and support rod 18 is located at third screening
13 bottom of frame.
The present apparatus operates in this way, and the specific operation method is as follows: when the first screening frame 11, the second screening frame 12 and third
When screening frame 13 moves up and down, the first screening frame 11 and the second screening frame 12 move up and down and block 15 are driven to move up and down, block
When 15 up and down motions are contacted with damper 17, damper 17 can mitigate the second screening frame 12 of the first screening frame 11 to baffle 16
Impact force, while can play a supportive role to the first screening frame 11 and the second screening frame 12, make the first screening frame 11 and second
Screening frame 12 is more stable when working, and support rod 18 has supporting role to third screening frame 13, and improve equipment uses the longevity
Life.
Embodiment 2
Referring to Fig. 1, further including having L shape mounting rod 19, strut 20, arc guide rod 21, arcuated sliding bush 22 and elastic component 23, bottom plate
It is equipped with L shape mounting rod 19 in the middle part of 1 front and rear sides, is equipped with the strut 20 that front and back is one group on the left of L shape mounting rod 19,20 groups of strut
Number is identical with 14 numbers of blanking plate, and 20 bottom left of strut is equipped with arc guide rod 21, and slidingtype is equipped on arc guide rod 21
Arcuated sliding bush 22, is equipped with elastic component 23 between arcuated sliding bush 22 and strut 20, elastic component 23 be compressed spring, common spring,
The arcuated sliding bush 22 of gas spring etc., front and rear sides is sieved with the first screening frame 11, the second screening frame 12 and third respectively by bolt
The front and rear sides left part of frame 13 is selected to connect.
The present apparatus operates in this way, and the specific operation method is as follows: in the first screening frame 11, the second screening frame 12 and third
When screening frame 13 is vibrated, the first screening frame 11, the second screening frame 12 and third screening frame 13, which move upwards, drives arcuated sliding bush 22
It is moved upwards on arc guide rod 21, elastic component 23 is compressed, the first screening frame 11, the second screening frame 12 and third screening frame 13
When no longer moving upwards, elastic component 23, which resets, drives arcuated sliding bush 22 to reset, first screening frame 11 of the reset drive of arcuated sliding bush 22,
Second screening frame 12 and third screening frame 13 reset, and arc guide rod 21 and arcuated sliding bush 22 screen the first screening frame 11, second
Frame 12 and third screening frame 13 have guiding role, so that the first screening frame 11, the second screening frame 12 and third screening frame 13 exist
It is more stable when being vibrated.
Referring to Fig. 1, further including having screen frame 24, push rod 25 and link block 26,14 right part of bottom blanking plate is equipped with up and down
The screen frame 24 of direction rotation, up and down direction rotating push-rod 25,25 right end of push rod and 24 bottom of screen frame are equipped on front side of the second mounting rod 10
Portion's contact, 13 bottom right of third screening frame are welded with link block 26, and link block 26 is contacted with push rod 25.
The present apparatus operates in this way, and the specific operation method is as follows: when third screening frame 13 moves up and down and vibrates, third
Screening frame 13 moves up and down drives push rod 25 to move up and down by link block 26, and push rod 25, which moves up and down, pushes about 24 screen frame to transport
Dynamic, the up and down motion of screen frame 24 can further sieve the rare earth flowed down in third screening frame 13, by third screening frame
The smallest rare earth, which screens out, in 13 comes.
Although the disclosure, art technology has shown and described referring to the certain exemplary embodiments of the disclosure
Personnel it should be understood that in the case where the spirit and scope of the present disclosure limited without departing substantially from the following claims and their equivalents,
A variety of changes in form and details can be carried out to the disclosure.Therefore, the scope of the present disclosure should not necessarily be limited by above-described embodiment,
But should be not only determined by appended claims, also it is defined by the equivalent of appended claims.
Claims (6)
1. a kind of multi-stage oscillating screen of Rare Earth Production, includes bottom plate and the first mounting rod, bottom plate top left side is equipped with the first peace
Bar is filled, it is characterized in that: further including having vibration device, the second mounting rod, screening plant and shock-absorbing supporting device, on the first mounting rod
Equipped with the vibration device for driving rare earth vibrate up and down screening, bottom plate top right side is equipped with the second mounting rod, the second mounting rod
It is equipped with the screening plant that vibration screening is carried out to rare earth, the first mounting rod top, which is equipped with, supports screening plant gentle and impact force
Shock-absorbing supporting device.
2. the multi-stage oscillating screen of a kind of Rare Earth Production described in accordance with the claim 1, it is characterized in that: vibration device includes to slow down
Motor, gear wheel, bearing block, pinion gear, shaft, mounting blocks, threaded rod and the first convex block, the first mounting rod are equipped with the electricity that slows down
Machine is connected with shaft by shaft coupling on the output shaft of decelerating motor, is set in shaft there are two gear wheel, sets on the first mounting rod
There are two bearing blocks up and down, interference is connected with shaft in metal (upper seat, and interference is connected with pinion gear on upper lower rotary shaft, small
Gear is engaged with gear wheel, and shaft right end is equipped with mounting blocks, has been connected through a screw thread at least two threaded rods in mounting blocks,
Threaded rod both ends are equipped with the first convex block.
3. a kind of multi-stage oscillating screen of Rare Earth Production according to claim 2, it is characterized in that: screening plant includes first
Screening frame, the second screening frame, third screening frame, the second convex block, blanking plate, the second mounting rod front side are uniformly provided under at least two
Flitch, blanking plate overlap in vertical direction, and left part rotary type is equipped with the first screening frame in the blanking plate on top, middle part
Left part rotary type is equipped with the second screening frame in blanking plate, and rotary type is equipped with third screening frame, the first screening in the blanking plate of lower part
Frame and the second screening frame bottom are the web plate of arc, and the web plate aperture in the first screening frame is greater than the web plate in the second screening frame
Aperture, it is solid slab that third, which screens frame bottom, and the first screening frame, the second screening frame and third screening frame bottom left are equipped with the
Two convex blocks, the second convex block are located above the first convex block.
4. the multi-stage oscillating screen of a kind of Rare Earth Production described in accordance with the claim 3, it is characterized in that: shock-absorbing supporting device includes
Block, baffle, damper and support rod, the first screening frame and the second screening frame left part are equipped with the block that front and back is one group, the
One mounting rod is equipped with baffle identical with block group number, and baffle and block overlap in vertical direction, and baffle right part is equal
Equipped with damper, damper is located at below block, and bottom plate top left side is equipped with support rod, and support rod is located at third screening frame bottom
Portion.
5. a kind of multi-stage oscillating screen of Rare Earth Production according to claim 4, it is characterized in that: further include have L shape mounting rod,
Strut, arc guide rod, arcuated sliding bush and elastic component, bottom plate front and rear sides middle part are equipped with L shape mounting rod, L shape mounting rod left side
The strut for being one group equipped with front and back, strut group number is identical with blanking plate number, and strut bottom left is equipped with arc guide rod, arc
Equal slidingtype is equipped with arcuated sliding bush on guide rod, and elastic component, the arcuated sliding bush of front and rear sides are equipped between arcuated sliding bush and strut
It is connect with the front and rear sides left part of the first screening frame, the second screening frame and third screening frame.
6. a kind of multi-stage oscillating screen of Rare Earth Production according to claim 5, it is characterized in that: further include have screen frame, push rod,
And link block, bottom blanking plate right part rotary type are equipped with screen frame, the second mounting rod lower front rotary type is equipped with push rod, push rod
Right end is contacted with screen frame bottom, and third screening frame bottom right is equipped with link block, and link block is contacted with push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910573491.1A CN110293055A (en) | 2019-06-28 | 2019-06-28 | A kind of multi-stage oscillating screen of Rare Earth Production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910573491.1A CN110293055A (en) | 2019-06-28 | 2019-06-28 | A kind of multi-stage oscillating screen of Rare Earth Production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110293055A true CN110293055A (en) | 2019-10-01 |
Family
ID=68029196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910573491.1A Withdrawn CN110293055A (en) | 2019-06-28 | 2019-06-28 | A kind of multi-stage oscillating screen of Rare Earth Production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110293055A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117225695A (en) * | 2023-11-09 | 2023-12-15 | 山东省路桥集团有限公司 | Swing type screening machine for road and bridge construction |
-
2019
- 2019-06-28 CN CN201910573491.1A patent/CN110293055A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117225695A (en) * | 2023-11-09 | 2023-12-15 | 山东省路桥集团有限公司 | Swing type screening machine for road and bridge construction |
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Application publication date: 20191001 |
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