CN213161239U - Breaker is used in hydraulic engineering construction - Google Patents
Breaker is used in hydraulic engineering construction Download PDFInfo
- Publication number
- CN213161239U CN213161239U CN202021198152.4U CN202021198152U CN213161239U CN 213161239 U CN213161239 U CN 213161239U CN 202021198152 U CN202021198152 U CN 202021198152U CN 213161239 U CN213161239 U CN 213161239U
- Authority
- CN
- China
- Prior art keywords
- crushing
- room
- belt pulley
- hydraulic engineering
- engineering construction
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Disintegrating Or Milling (AREA)
- Crushing And Grinding (AREA)
Abstract
The utility model discloses a breaker is used in hydraulic engineering construction relates to hydraulic engineering equipment technical field. This breaker is used in hydraulic engineering construction, including smashing the room, smash the indoor portion and be close to bottom edge welding and have an album thing frame, smash indoor portion and lie in album thing frame top and follow the horizontal direction slip and inlay and be equipped with two crushing rollers. This breaker is used in hydraulic engineering construction, during the use, start the inside motor of first motor box and second motor box, through first belt pulley, first belt, second belt pulley and second belt make two crushing axles and two crushing rollers can effectual rotation in opposite directions respectively, make equipment can carry out the primary crushing processing of rubble through crushing axle, make the rubble after the primary crushing pass through the centralized processing of the collection thing frame of crushing axle below, make crushing roller can effectively carry out the secondary crushing processing of rubble, the chamber is smashed in the final kibbling rubble collection thing frame of concentrating discharge through bottommost.
Description
Technical Field
The utility model relates to a hydraulic engineering equipment technical field specifically is a breaker for hydraulic engineering construction.
Background
Hydraulic engineering is the surface water and the groundwater that are used for controlling and allotment nature, reaches the earth's surface water and the groundwater of harmfulness of removing and making good use of purpose and the engineering of building, also is called water works, however, breaker among the prior art is many directly drop into the device inside with the rubble directly, makes the rubble pile up inside equipment easily, leads to the unable high efficiency of equipment to carry out the shredding of rubble, makes the equipment actual use effect receive the influence of certain degree.
SUMMERY OF THE UTILITY MODEL
The utility model provides a breaker is used in hydraulic engineering construction can effectively disperse the inside rubble of entering equipment after using, makes equipment can high-efficiently carry out the shredding of rubble, and then effectively accelerates the actual work process, improve equipment in-service use effect.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a breaker is used in hydraulic engineering construction, is including smashing the room, it has an album thing frame to smash the welding of indoor portion near bottom edge, smash indoor portion and be located an album thing frame top and inlay along the horizontal direction slip and be equipped with two crushing rollers, two crushing roller one end all extends to crushing outdoor portion, every crushing roller surface is close to one end edge and is located crushing outdoor portion and all overlaps and be equipped with first belt pulley, it has an album thing frame also to be located two crushing roller tops to smash indoor portion, it inlays along the horizontal direction slip and is equipped with two crushing shafts, two to smash indoor portion and be located an album thing frame top and all extend to crushing outdoor portion, every crushing shaft surface is close to one end edge and is located crushing outdoor portion and all overlaps and is equipped with the second belt pulley.
In order to make equipment effectively carry out the shredding of rubble, as the utility model relates to a breaker for hydraulic engineering construction, it has first backup pad to smash the welding of room one side surface position in crushing roller below, and first backup pad top center department both sides all are provided with first motor box, every first motor box one side surface center department all welds and runs through there is first pivot, and every first pivot surface is close to one end edge and also all overlaps and be equipped with first belt pulley, four first belt pulley divide into two sets ofly altogether, every group two it is equipped with first belt all to overlap between the first belt pulley surface.
In order to make equipment effectively carry out the shredding of rubble, as the utility model relates to a breaker for hydraulic engineering construction, it has the second backup pad to smash the welding of room one side surface position in crushing roller below, and the second backup pad top is close to both sides edge and all is provided with second motor box, every second motor box one side surface center department all welds and runs through there is the second pivot, and every second pivot surface is close to one end edge and also all overlaps and be equipped with second belt pulley, four the second belt pulley divide into two sets ofly altogether, every group two all overlap and be equipped with the second belt between the second belt pulley surface.
In order to make equipment can effectively carry out the decentralized processing of the inside rubble of injection apparatus, conduct the utility model relates to a breaker is used in hydraulic engineering construction, smash room one side surface and be located and seted up first sprue between two second motor boxes, it has the branch material room to smash the welding of roof portion center department, it is cylindric hollow structure to divide the material room, and the bottom is open structure, it has seted up the material passing mouth to smash roof portion position in branch material room below to the inside welding of material passing mouth has the baffle, the welding of baffle roof portion center department has spacing frame.
In order to effectively disperse and treat the broken stones injected into the equipment, the utility model is used as a hydraulic engineering construction crushing device, a linkage shaft penetrates through the center of the top of the distributing chamber in a sliding manner, one end of the linkage shaft extends to the inside of the limiting frame, a third belt pulley is sleeved at the edge of the outer surface of the coupling shaft close to the other end, a material distributing plate is sleeved inside the material distributing chamber on the outer surface of the coupling shaft, a material feeding frame is arranged at one side of the coupling shaft on the top of the material distributing chamber, the inside of the feeding frame is communicated with the inside of the material distribution chamber, a third motor box is arranged at the top of the material distribution chamber and positioned at the other side of the interlocking shaft, a third rotating shaft penetrates through the center of the top of the third motor box in a sliding manner, and the edge of the outer surface of the third rotating shaft, which is close to one end, is also sleeved with a third belt pulley, and a third belt is sleeved between the outer surfaces of the third belt pulleys.
Crushing indoor portion can effectively be poured into in order to make great rubble, conduct the utility model relates to a breaker for hydraulic engineering construction, divide the material outdoor surface to be located first sprue top and seted up the second sprue, and the welding has the guide frame between second sprue and the first sprue inside.
The utility model provides a breaker is used in hydraulic engineering construction. The method has the following beneficial effects:
(1) the crushing device for hydraulic engineering construction is characterized in that when the crushing device is used, a motor in a third motor box is started, a third rotating shaft can effectively drive a linkage shaft to rotate anticlockwise through a third belt pulley and a third belt, then crushed stone is effectively injected into a material distribution chamber through a feeding frame, the linkage shaft rotating anticlockwise drives a material distribution disc to rotate anticlockwise, the injected crushed stone can be effectively dispersed to the edge of the material distribution disc, smaller crushed stone can more dispersedly pass through a gap between the inner wall of the material distribution disc and the inner wall of the material distribution chamber and directly flies over a crushing shaft in the crushing chamber from a material passing port, larger crushed stone cannot effectively enter the crushing chamber through a gap between the material distribution disc and the inner wall of the material distribution chamber, and larger crushed stone is finally thrown into the material guide frame through a second material injection port under the driving of the material distribution disc and effectively drops into the crushing chamber from the first material injection port, make equipment can effectually scatter the rubble, make equipment can carry out the shredding of rubble more efficient.
(2) This breaker is used in hydraulic engineering construction, during the use, start the inside motor of first motor box and second motor box, through first belt pulley, first belt, second belt pulley and second belt make two crushing axles and two crushing rollers can effectual rotation in opposite directions respectively, make equipment can carry out the primary crushing processing of rubble through crushing axle, make the rubble after the primary crushing pass through the centralized processing of the collection thing frame of crushing axle below, make crushing roller can effectively carry out the secondary crushing processing of rubble, final kibbling rubble is concentrated through the collection thing frame of bottommost and is discharged crushing room, make equipment can be high-efficient and abundant carry out the shredding processing of rubble.
Drawings
Fig. 1 is a front perspective view of the present invention;
fig. 2 is a bottom perspective view of the present invention;
FIG. 3 is a front, cross-sectional, perspective view of the present invention;
FIG. 4 is a front, expanded, cut-away, perspective view of the present invention;
fig. 5 is a bottom expanded perspective view of the present invention.
In the figure: 1. a crushing chamber; 2. collecting frames; 3. a crushing roller; 4. a first pulley; 5. a crushing shaft; 6. a second pulley; 7. a first motor case; 8. a second motor case; 9. a material distribution chamber; 10. a partition plate; 11. a linkage shaft; 12. a third belt pulley; 13. a third motor case; 14. distributing disks; 15. a feeding frame; 16. and a material guide frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a breaker is used in hydraulic engineering construction, including smashing room 1, it has collection frame 2 to smash 1 inside welding of being close to bottom edge in room, it inlays and is equipped with two crushing rollers 3 to smash 1 inside collection frame that is located of room 2 top along the horizontal direction slip, two 3 one ends of crushing roller all extend to crushing 1 outsidely, every 3 surfaces of crushing roller are close to one end edge and are located crushing 1 outside cover and are all equipped with first belt pulley 4, it also has collection frame 2 to smash 1 inside two crushing rollers that are located of room 3 tops, it inlays and is equipped with two crushing shafts 5 to smash 1 inside collection frame 2 tops along the horizontal direction slip of being located of room, two 5 one ends of crushing shaft all extend to crushing 1 outsidely, every 5 surfaces of crushing shaft is close to one end edge and is located crushing 1 outside cover of room and is equipped with.
In this embodiment: set up through crushing room 1 and provide the installation basis that other functional unit of equipment set up, prevent effectively that inside rubble from splashing everywhere at crushing in-process simultaneously, make kibbling rubble effectively concentrate in equipment inside and remove through setting up of collection thing frame 2, can effectually concentrate discharge crushing room 1 finally, set up through crushing roller 3 and make equipment effectively carry out rubble secondary crushing processing, make equipment can effectively carry out the realization that should have the function, set up through first belt pulley 4 and make the inside motor of first motor box 7 can effectively drive crushing roller 3 and rotate, the motor model is MS-80M2-2, make equipment can effectively carry out the shredding processing of rubble, set up through crushing shaft 5 and make equipment can effectively carry out the primary crushing processing of rubble, make equipment can more efficient carry out the realization that should have the function, set up through second belt pulley 6 and make the inside motor of second motor box 8 can effectively drive crushing shaft 5 and carry out And (4) rotating.
Specifically, it has first backup pad to smash 1 one side surface of room and be located the welding of 3 below crushing rollers, and first backup pad top center department both sides all are provided with first motor box 7, and 7 one side surface centers department of every first motor box all welds and runs through there is first pivot, and every first pivot surface is close to one end edge and also all overlaps and be equipped with first belt pulley 4, and four first belt pulley 4 divide into two sets ofly altogether, all overlaps between two first belt pulley 4 surfaces of every group and is equipped with first belt.
In this embodiment: the installation setting of first motor box 7 is conveniently carried out through the establishment of first backup pad, it can effectively provide required power for equipment normal operating to make its inside motor through establishment of first motor box 7, the installation setting of conveniently carrying out first belt pulley 4 through establishment of first pivot, it can effectively drive crushing roller 3 and rotate to make equipment effectively carry out the shredding of rubble through establishing of first belt 7 inside motor, make equipment can normally carry out the realization that has the function.
Specifically, the welding of the outer surface of one side of the crushing chamber 1 below the crushing shaft 5 is provided with a second support plate, the top of the second support plate is close to edges of two sides and is provided with a second motor box 8, the center of the outer surface of one side of each second motor box 8 is welded with a second rotating shaft, the outer surface of each second rotating shaft is close to one edge and is also sleeved with a second belt pulley 6, the four second belt pulleys 6 are divided into two groups, and a second belt is sleeved between the outer surfaces of the two second belt pulleys 6 in each group.
In this embodiment: the installation setting of second motor box 8 is conveniently carried out through the establishment of second backup pad, can effectively provide required power for equipment normal operating through the inside motor of establishment of second motor box 8, the installation setting of conveniently carrying out second belt pulley 6 through the establishment of second pivot, establish through second belt pulley 6 and make the inside motor of second motor box 8 can effectively drive crushing roller 5 and rotate, establish through the second belt and cooperate second belt pulley 6 to make the inside motor of second motor box 8 can effectively drive crushing roller 5 and rotate.
Specifically, smash 1 one side surface of room and be located and seted up first sprue between two second motor boxes 8, smash 1 top center department welding in room and have been divided material room 9, divide material room 9 to be cylindric hollow structure, and the bottom is open structure, smash 1 top in room and be located and divide material room 9 below and seted up the material passing opening to the inside welding of material passing opening has baffle 10, and the welding of 10 top centers of baffle has spacing frame.
In this embodiment: set up through first sprue and make great rubble effectively pour into crushing room 1 inside, make equipment can normally carry out the realization that has the function, set up through dividing material room 9 and conveniently carry out the installation setting of other functional unit of equipment, make equipment can effectively disperse the inside rubble of injection device and open, make equipment can high-efficiently carry out the realization that has the function, set up through crossing the material mouth and make the inside rubble of pouring into branch material room 9 effectively fall into crushing room 1 inside, make equipment can normally carry out the realization that has the function, set up through baffle 10 conveniently carries out the installation setting of interlock axle 11, effectively carry out the position restriction of interlock axle 11 through setting up of spacing frame.
Concretely, it has interlock axle 11 to go through in the slip of branch material room 9 top center department, interlock axle 11 one end extends to inside the spacing frame, interlock axle 11 surface is close to other end edge cover and is equipped with third belt pulley 12, interlock axle 11 surface is located the inside cover of branch material room 9 and is equipped with branch charging tray 14, it is provided with throws material frame 15 to be located interlock axle 11 one side at branch material room 9 top, and throw material frame 15 inside and divide the inside intercommunication of material room 9, it is provided with third motor box 13 to be located interlock axle 11 opposite side at branch material room 9 top, third motor box 13 top center department slides and runs through there is the third pivot, and the third pivot surface is close to one end edge and also overlaps and is equipped with third belt pulley 12, the cover is equipped with the third belt between two third belt pulley.
In this embodiment: the installation setting of other functional unit of equipment is conveniently carried out through the establishment of interlock axle 11, the establishment through third belt pulley 12 makes the inside motor of third motor box 13 can effectively drive interlock axle 11 and carry out anticlockwise rotation, the rubble that makes injection branch material room 9 through the establishment of branch charging tray 14 can effectively disperse to pour into crushing room 1 inside, make equipment can high-efficiently carry out the realization that should have the function, it is convenient effectively to pour into the equipment into to proper amount rubble inside through the establishment of throwing material frame 15, establish through third motor box 13 and provide the required power of equipment normal operating, the installation setting of conveniently carrying out third belt pulley 12 through establishing of third pivot, it can effectively drive interlock axle 11 and rotate to make the inside motor of third motor box 13 through establishing cooperation third belt pulley 12 of third belt.
Specifically, the outer surface of the material distribution chamber 9 is located above the first material injection port and is provided with a second material injection port, and a material guide frame 16 is welded between the second material injection port and the inside of the first material injection port.
In this embodiment: the installation setting of conveniently carrying out guide frame 16 through the first sprue of the cooperation of establishing of second sprue makes great rubble effectively pour into crushing room 1 inside through establishing of guide frame 16, makes the realization that equipment can normally carry out due function.
When the crushing device is used, the motor in the third motor box 13 is started, so that the third rotating shaft can effectively drive the linkage shaft 11 to rotate anticlockwise through the third belt pulley 12 and the third belt, then crushed stone is effectively injected into the material distribution chamber 9 through the feeding frame 15, the linkage shaft 11 rotating anticlockwise drives the material distribution disc 14 to rotate anticlockwise, simultaneously, the injected crushed stone can be effectively dispersed to the edge of the material distribution disc 14, smaller crushed stone can more dispersedly pass through the gap between the material distribution disc 14 and the inner wall of the material distribution chamber 9 and directly flies over the crushing shaft 5 in the crushing chamber 1 from the material passing port, larger crushed stone cannot effectively enter the crushing chamber 1 through the gap between the material distribution disc 14 and the inner wall of the material distribution chamber 9, larger crushed stone is finally driven by the material distribution disc 14 to enter the material guide frame 16 through the second material injection and throwing port and effectively drops into the crushing chamber 1 from the first material injection port, make equipment can effectually scatter the rubble, make equipment can carry out the shredding of rubble more efficiently, start first motor box 7 and the inside motor of second motor box 8 simultaneously, through first belt pulley 4, first belt, second belt pulley 6 and second belt make two crushing axles 5 and two crushing rollers 3 can effectual rotation in opposite directions respectively, make equipment can carry out the primary crushing treatment of rubble through crushing axle 5, make the rubble after the primary crushing pass through the centralized processing of collection thing frame 2 of crushing axle 5 below, make crushing roller 3 can effectively carry out the secondary crushing treatment of rubble, final kibbling rubble is concentrated through the collection thing frame 2 of bottommost and is discharged crushing chamber 1, make equipment can be high-efficient and abundant shredding that carries on the rubble.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a breaker for hydraulic engineering construction, is including smashing room (1), its characterized in that: a material collecting frame (2) is welded in the crushing chamber (1) near the bottom edge, the crushing chamber (1) is internally provided with two crushing rollers (3) which are arranged above the collection frame (2) along the horizontal direction in a sliding manner, one ends of the two crushing rollers (3) extend to the outside of the crushing chamber (1), the outer surface of each crushing roller (3) is close to one end edge and is positioned outside the crushing chamber (1) and is sleeved with a first belt pulley (4), an object collecting frame (2) is also welded above the two crushing rollers (3) in the crushing chamber (1), crushing room (1) inside is located collection thing frame (2) top and follows the horizontal direction slip and inlay and be equipped with two crushing roller (5), two crushing roller (5) one end all extends to crushing room (1) outside, every crushing roller (5) surface is close to one end edge and is located crushing room (1) outside and all overlaps and is equipped with second belt pulley (6).
2. The crushing device for hydraulic engineering construction according to claim 1, wherein: smash the welding of room (1) one side surface and being located crushing roller (3) below and have first backup pad, and first backup pad top center department both sides all are provided with first motor box (7), every first motor box (7) one side surface center department all welds and runs through there is first pivot, and every first pivot surface is close to one end edge and also all overlaps and be equipped with first belt pulley (4), four first belt pulley (4) divide into two sets of altogether, every two of group all the cover is equipped with first belt between first belt pulley (4) surface.
3. The crushing device for hydraulic engineering construction according to claim 1, wherein: smash room (1) one side surface and be located crushing shaft (5) below welding and have the second backup pad, and the second backup pad top is close to both sides edge and all is provided with second motor box (8), every the equal welding of second motor box (8) one side surface center department has run through the second pivot, and every second pivot surface is close to one end edge and also all overlaps and be equipped with second belt pulley (6), four second belt pulley (6) divide into two sets ofly, every two of group all the cover is equipped with the second belt between second belt pulley (6) surface.
4. The crushing device for hydraulic engineering construction according to claim 1, wherein: smash room (1) one side surface and be located and seted up first sprue between two second motor boxes (8), it has branch material room (9) to smash room (1) top center department welding, divide material room (9) to be cylindric hollow structure, and the bottom is open structure, smash room (1) top and be located branch material room (9) below and seted up the material passing mouth to material passing mouth internal weld has baffle (10), baffle (10) top center department welding has spacing frame.
5. The crushing device for hydraulic engineering construction according to claim 4, wherein: a linkage shaft (11) penetrates through the center of the top of the distributing chamber (9) in a sliding manner, one end of the linkage shaft (11) extends into the limiting frame, a third belt pulley (12) is sleeved at the edge of the outer surface of the linkage shaft (11) close to the other end, a material distributing disc (14) is sleeved on the outer surface of the linkage shaft (11) and positioned in the material distributing chamber (9), a feeding frame (15) is arranged at one side of the linkage shaft (11) at the top of the material distribution chamber (9), the interior of the feeding frame (15) is communicated with the interior of the distributing chamber (9), a third motor box (13) is arranged at the top of the distributing chamber (9) and positioned at the other side of the linkage shaft (11), a third rotating shaft penetrates through the center of the top of the third motor box (13) in a sliding manner, and the edge of the outer surface of the third rotating shaft, which is close to one end, is also sleeved with a third belt pulley (12), and a third belt is sleeved between the outer surfaces of the third belt pulleys (12).
6. The crushing device for hydraulic engineering construction according to claim 4, wherein: divide material room (9) surface to be located first sprue top and seted up the second sprue, and the welding has guide frame (16) between second sprue and the inside of first sprue.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202021198152.4U CN213161239U (en) | 2020-06-24 | 2020-06-24 | Breaker is used in hydraulic engineering construction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202021198152.4U CN213161239U (en) | 2020-06-24 | 2020-06-24 | Breaker is used in hydraulic engineering construction |
Publications (1)
Publication Number | Publication Date |
---|---|
CN213161239U true CN213161239U (en) | 2021-05-11 |
Family
ID=75790203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202021198152.4U Expired - Fee Related CN213161239U (en) | 2020-06-24 | 2020-06-24 | Breaker is used in hydraulic engineering construction |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN213161239U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115191622A (en) * | 2022-07-15 | 2022-10-18 | 滁州学院 | Pecan decorticator |
-
2020
- 2020-06-24 CN CN202021198152.4U patent/CN213161239U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115191622A (en) * | 2022-07-15 | 2022-10-18 | 滁州学院 | Pecan decorticator |
CN115191622B (en) * | 2022-07-15 | 2023-08-18 | 滁州学院 | Pecan fruit decorticator |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN204170816U (en) | Medical waste disintegrating machine | |
CN107661792A (en) | It is a kind of can fast-crushing waste and old material reducing mechanism | |
CN206264210U (en) | A kind of waste or used plastics breaker | |
CN213161239U (en) | Breaker is used in hydraulic engineering construction | |
CN204432670U (en) | A kind of vacuum pulverizes closet | |
CN108993657A (en) | A kind of construction site construction waste crushing device | |
CN212576446U (en) | Dust collector is smashed to gardens discarded object | |
CN211367307U (en) | Sewage treatment plant for building construction site | |
CN107649288A (en) | A kind of lithium battery material equipment for removing ferric ion | |
CN212215667U (en) | Soil pollution treatment equipment | |
CN207102839U (en) | A kind of special waste treatment equipment of civil construction | |
CN203238057U (en) | Crushing-type grille cleaner | |
CN212167572U (en) | Civil engineering construction waste treatment device | |
CN210279307U (en) | Civil engineering construction waste treatment device | |
CN108970735B (en) | High-efficient refuse separation processing apparatus for construction | |
CN208542263U (en) | A kind of civil engineering work waste treatment device | |
CN215743947U (en) | Crushing cutter plate and screening and crushing device | |
CN215032263U (en) | Solid waste pollutes centralized treatment device | |
CN209287495U (en) | A kind of architectural engineering building waste disintegrating apparatus | |
CN212791092U (en) | Layered construction waste crushing device | |
CN211026519U (en) | Building rubbish classification equipment | |
CN209952979U (en) | Office is with good paper reducing mechanism of security | |
CN208082613U (en) | A kind of device for pulverizing rubbish | |
CN208275542U (en) | It is a kind of for removing the spiral roller bench of plastic substance in building waste | |
CN112246336A (en) | Concentrator with dust removal, noise control function |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210511 |