CN110607776A - Sweeper rolls and sweeps mounting bracket - Google Patents
Sweeper rolls and sweeps mounting bracket Download PDFInfo
- Publication number
- CN110607776A CN110607776A CN201810615344.1A CN201810615344A CN110607776A CN 110607776 A CN110607776 A CN 110607776A CN 201810615344 A CN201810615344 A CN 201810615344A CN 110607776 A CN110607776 A CN 110607776A
- Authority
- CN
- China
- Prior art keywords
- sweeper
- seat
- stop
- cylinder
- telescopic
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/02—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt
- E01H1/05—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt with driven brushes
- E01H1/056—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt with driven brushes having horizontal axes
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention relates to a sweeper rolling sweeper mounting frame, which comprises a fixing frame fixedly connected with a sweeper body and a rotating seat for mounting a rolling sweeper, wherein the rotating seat is rotatably assembled with the fixing frame in the middle of the fixing frame in the length direction, a rotating axis extends vertically downwards, the fixing frame is connected with a telescopic driving device for driving the rotating seat to rotate relative to the fixing frame around the rotating axis, one end of the telescopic driving device is hinged with the fixing frame, and the other end of the telescopic driving device is hinged with the rotating seat. The sweeper is enabled to roll and sweep the road surface in the advancing process by adjusting the included angle between the rolling sweeping device arranged on the rotary seat and the advancing direction of the sweeper, and the sweeping effect is optimized. The whole process does not need manual regulation, the rotation angle of the rotating seat can be adjusted by controlling the telescopic cylinder to stretch, the structure is simple and compact, the installation is convenient, the operation is simple, convenient and flexible, and the application range is wide.
Description
Technical Field
The invention relates to the field of rolling sweeper devices of sweeping vehicles, in particular to a mounting frame for a rolling sweeper of a sweeping vehicle.
Background
With the continuous expansion of urban construction scale, the road construction is wider and wider, and the role of the sweeper as a road cleaning sweeper in urban sanitation is more and more important. At present, the rolling sweeper of a sweeper is mostly fixed on the sweeper along the advancing direction vertical to the sweeper, and the rolling sweeper cannot rotate in a horizontal plane in the process of sweeping a road surface, namely, the axis of the rolling sweeper is always vertical to the advancing direction of the sweeper. Practice shows that the cleaning effect of the cleaning mode that the rolling sweeping axis is perpendicular to the advancing direction of the sweeper is not ideal, and if the rolling sweeping axis deviates a certain angle in the horizontal plane to form a certain included angle between the rolling sweeping axis and the advancing direction of the sweeper, the cleaning effect of the road surface is effectively enhanced. Therefore, an angle adjusting device capable of adjusting the rotation angle of the rolling sweeping device in the horizontal plane needs to be invented.
Disclosure of Invention
The invention aims to provide a sweeper rolling sweeper mounting frame to solve the problem that an existing sweeper rolling sweeper is poor in sweeping effect.
In order to achieve the purpose, the technical scheme of the rolling sweeper mounting rack of the sweeper is as follows:
the utility model provides a motor sweeper rolls sweeps mounting bracket, is including being used for rolling the roating seat of sweeping with automobile body fixed connection's mount and being used for the installation, the roating seat rotates the assembly at mount length direction's middle part and mount, the vertical downwardly extending of axis of rotation, the mount on be connected with and be used for driving the roating seat around axis of rotation and mount emergence relative pivoted flexible drive arrangement, flexible drive arrangement one end is articulated with the mount, the other end is articulated with the roating seat.
The invention has the beneficial effects that: the mount is fixed on the automobile body, rolls and sweeps and install on the roating seat, and the roating seat that makes flexible drive arrangement drive and mount rotation assembly takes place relative rotation around rotation axis and mount through control and mount articulated flexible drive arrangement's flexible to adjust the contained angle that advances the direction between device and the sweeper that sets up on the roating seat, make the sweeper roll and sweep the road surface at the in-process that advances, optimize and clean the effect. The angle of the rotary seat can be adjusted only by controlling the extension and retraction of the telescopic driving device in the whole process, the cleaning effect is good, the structure is simple, compact and stable, the installation is convenient, the operation is simple, convenient and flexible, and the application range is wide.
Furthermore, the rotating seat is provided with a stopping structure, and the fixed frame is provided with a stopping matching structure which is matched with the stopping structure in a stopping way so as to limit the rotating angle range of the rotating seat. The rotary seat is provided with the stop structure, the fixed frame is provided with the stop matching structure matched with the stop structure in a stop mode, when the rotary seat rotates to the maximum allowable angle around the rotation axis, the stop structure on the rotary seat is matched with the stop matching structure on the fixed frame in a stop mode, the rotary seat is prevented from further increasing the rotation angle, and therefore the rotation angle of the rotary seat is limited within the set range.
Furthermore, the stopping matching structure comprises a stopping seat fixedly arranged on the fixed frame and a stopping rod capable of adjusting the screwing-in depth and arranged in the stopping seat in a penetrating mode, and one end of the stopping rod is in stopping matching with the stopping structure. When the rotary seat rotates, the stop structure is in stop fit with the stop rod in the stop fit structure, the rotary seat can be prevented from further rotating, and at the moment, the included angle between the rolling sweeping axis and the advancing direction of the sweeper reaches the maximum adjustable angle. The rotating angle range of the rotating seat can be changed by adjusting the screwing-in depth of the stop rods on the stop seats, and the rotating angle range of the rotating seat can be increased or decreased by adjusting the screwing-in depth of the stop rods on the left side and the right side into the stop seats; the rotating angle range of the rotating seat can be enlarged or reduced towards the side by adjusting the screwing depth of the one-side stopping rod into the stopping seat, so that the rotating angle range of the rotating seat and the inclination relative to the fixed frame can be freely set according to requirements, the adjustable angle range is large, and the operation is simple.
Furthermore, the telescopic driving device comprises two telescopic cylinders, the cylinder bodies of the two telescopic cylinders are fixed together, the telescopic directions of the cylinder rods are opposite, the telescopic cylinder connecting seat is arranged on the fixing frame, the cylinder rod of the telescopic cylinder close to the telescopic cylinder connecting seat is hinged with the telescopic cylinder connecting seat, the cylinder body is provided with a bearing frame matched with the telescopic cylinder connecting seat, and the bearing frame and the telescopic cylinder connecting seat are in guide fit in the motion direction of the cylinder body and are in rotation stopping fit in the up-down direction. By arranging the two telescopic cylinders with opposite telescopic directions in parallel, the stroke of the telescopic cylinders can be effectively increased, and the problem that the rotating angle range of the rotating seat is limited due to the fact that the stroke of the telescopic cylinders is too small is solved. The telescopic cylinder connecting seat is arranged on the fixing frame, the bearing frame which is matched with the telescopic cylinder connecting seat in a guiding way in the motion direction of the cylinder body and is in rotation stopping fit in the up-down direction is arranged on the cylinder body, so that the weight of the telescopic cylinder can be transmitted to the telescopic cylinder connecting seat through the bearing frame, and the problem that the cylinder rod of the telescopic cylinder bears overlarge weight and damages equipment is solved.
Furthermore, the telescopic driving device is a telescopic cylinder connected between the fixed frame and the rotating seat. The telescopic driving rotating seat of the telescopic cylinder rotates around the rotating axis, so that a rolling sweeper axis arranged on the rotating seat and the sweeper are driven to form a certain included angle in the forward direction, the rolling sweeper is enabled to clean the ground, and the cleaning effect is enhanced. The telescopic amount of the telescopic driving device is changed, and the purpose of adjusting the included angle between the rolling sweeping axis and the front advancing direction of the sweeper can be achieved.
Furthermore, the telescopic cylinder is a cylinder. Compared with an electric cylinder, the air cylinder has the advantages of simple structure, wide application, adaptability to severe environment with dust flying when the road surface is cleaned, strong adaptability and capability of fully utilizing an air source device for the vehicle to supply air for the air cylinder.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a left side view of the present invention;
FIG. 4 is a top view of example 3 of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The rolling sweeper mounting bracket of the sweeper comprises a support frame for fixing a mounting bracket 1 on a sweeper body and a rotary seat 2 for mounting a rolling sweeper, wherein the specific embodiment 1 of the rolling sweeper mounting bracket of the sweeper is shown in figures 1 to 3. The support frame is provided with two sets of left and right correspondingly at the both ends of mount 1 along the length direction of mount 1, and two sets of support frames include upper support frame 5 and lower support frame 6 respectively, and upper support frame 5 and lower support frame 6 are together fixed through bolt and rectangular hole detachable. The middle part of the fixed frame 1 in the length direction is rotatably provided with a rotating seat 2 which can rotate relative to the fixed frame 1 through a pin shaft 3, two sides of the rotating seat 2 are correspondingly provided with flanges 11, a baffle plate 12 is fixedly arranged on the fixed frame 1 at a position corresponding to the flange 11, the baffle plate 12 is provided with a screw hole, a limiting bolt 4 capable of adjusting the screwing-in depth penetrates through the screw hole, the end part of the limiting bolt 4 is in blocking fit with the flange 11 on the rotating seat 2 to limit the rotating angle of the rotating seat 2, and the screwing-in depth of the limiting bolts 4 at two sides in the screw hole can be adjusted to be larger or smaller than the rotating angle range of the rotating seat; the rotation angle range of the rotating seat 2 can be expanded or reduced towards the side by adjusting the screwing depth of the unilateral limiting bolt 4 in the screw hole. In the embodiment, the flange arranged on the rotary seat forms a stopping structure, the limit bolt 4 arranged on the fixed frame forms a stopping rod, the baffle plate 12 provided with the screw hole forms a stopping seat, and the stopping rod and the stopping seat form a stopping matching structure. In other embodiments, the limit bolt and the stop seat may be disposed on the rotating seat, and the flange may be disposed on the fixed frame, in which case, the limit bolt and the stop seat form the stop structure, and the flange forms the stop engagement structure.
The telescopic cylinder connecting seat 14 is fixedly arranged on the fixing frame 1, the telescopic cylinder connecting seat 14 is arranged in the bearing frame 7 in a penetrating mode, the bearing frame 7 comprises two parallel sliding plates fixedly arranged on two sides of a cylinder body of the upper air cylinder 8, a strip hole extending along the telescopic direction of the air cylinder is formed in each sliding plate, and the telescopic cylinder connecting seat 14 is arranged in the strip hole in a penetrating mode and hinged to an air rod of the upper air cylinder 8. When the upper cylinder 8 stretches, the air rod drives the sliding plate to move along the stretching direction of the upper cylinder 8, so that the telescopic cylinder connecting seat 14 slides relative to the bearing frame 7 in the long strip hole along the extension direction of the long strip hole. The bearing frame 7 which is guided and rotation-stopped and assembled with the telescopic cylinder connecting seat 14 is arranged, so that on one hand, part of the weight of the air cylinder can be transmitted to the telescopic cylinder connecting seat 14 through the bearing frame 7, and the phenomenon that an air rod of the air cylinder bears overlarge load and damages equipment is avoided; on the other hand, telescopic cylinder connecting seat 14 wears the rectangular hole of dress on the slide, forms the ascending spline assembly in upper and lower direction with the bearing frame, prevents that the cylinder from at vertical face internal rotation, has strengthened the steadiness of device. In this embodiment, the telescopic cylinder connecting seat 14 is a plate-shaped structure, and in other embodiments, the telescopic cylinder connecting seat may also be a structure such as a column body or the like fixed on the fixing frame and hinged to the air rod of the upper air cylinder. The cylinder body of the upper cylinder 8 fixes the cylinder body of the lower cylinder 9 through the Z-shaped plate 10, the telescopic directions of the air rods of the upper cylinder 8 and the lower cylinder 9 are opposite, the air rods of the lower cylinder 9 are hinged on the rotary seat 2, and the rotary seat 2 can be driven to rotate relatively around the hinge point of the fixed frame 1 and the rotary seat 2 by independently controlling the upper cylinder 8 or the lower cylinder 9 or simultaneously controlling the telescopic directions of the air rods of the upper cylinder 8 and the lower cylinder 9. In this embodiment, only the gas rod end of the upper cylinder 8 is provided with the bearing frame 7 which is assembled with the telescopic cylinder connecting seat 14 on the fixed frame 1 in a guiding way, and in other embodiments, the part of the gas rod of the lower cylinder 9 hinged with the rotating seat 2 can also be provided with the bearing frame which is assembled with the rotating seat 2 in a guiding way. In addition, the upper and lower cylinders are in a parallel up-down positional relationship in the present embodiment, and in other embodiments, the two cylinders may be fixedly connected in a parallel left-right positional relationship. In other embodiments, the telescopic driving device can also be a hydraulic oil cylinder, an electric push rod or the like.
When the rolling sweeping device is used specifically, the relative height of the upper support frame and the lower support frame is adjusted, the support frames are fixed on a vehicle body, the air cylinder can adopt an air source for a vehicle, an air source switch is connected to a control console of a cleaning vehicle, a rolling sweeping device (not shown in the figure) is fixed on the rotary seat 2, and the rotating angle range of the rotary seat 2 and the tendency relative to the fixed frame 1 can meet the requirements to be set by adjusting the screwing-in depth of the double-side or single-side limit bolts 4 in the screw holes of the baffle plate 12. During specific adjustment, the screwing depth of the limiting bolts 4 on the two sides of the rotating seat 2 in the baffle plate screw holes is increased, and the rotating angle range of the rotating seat 2 can be enlarged; on the contrary, the screwing depth of the limiting bolts 4 on the two sides of the rotary seat 2 in the baffle screw hole is reduced, and the rotating angle range of the rotary seat 2 can be adjusted. The whole rotation angle range of the rotating seat 2 can be deviated to the right side by reducing the screwing-in depth of the left limiting bolt 4 and increasing the screwing-in depth of the right limiting bolt 4; on the contrary, the whole rotation angle range of the rotating base 2 can be shifted to the left side by increasing the screwing depth of the left-side limiting bolt 4 and reducing the screwing depth of the right-side limiting bolt 4. Thereby can make the flexible drive roating seat 2 of gas pole in the upper and lower cylinder drive the roll sweep device and rotate to the angle of required adjustment around the pin joint of roating seat 2 and mount 1 in the rotation angle scope of setting for through the air supply switch of controlling on the cleaning vehicle control cabinet cylinder, make and fix the roll sweep device axis on the roating seat and the sweeping vehicle advancing direction and produce certain contained angle, the roll sweep device cleans the road surface in advancing, strengthens the effect of cleaning on road surface.
As a specific example 2 of the present invention, it is different from example 1 in that: in embodiment 1, in order to solve the problem that the rotation angle range of the rotary seat is limited due to the smaller stroke of the cylinder, two cylinders are provided to increase the stroke of the cylinder, in embodiment 2, only one cylinder with a sufficiently large stroke can be used to replace the two cylinders in embodiment 1 to drive the rotary seat to rotate, one end of the cylinder is hinged to the telescopic cylinder connecting seat on the fixed frame, and the other end of the cylinder is hinged to the rotary seat.
As a specific example 3 of the present invention, it is different from example 1 in that: in embodiment 1, the stop member and the rotating seat formed by the limit bolt and the baffle are located at two sides of the fixed frame, and in embodiment 3, as shown in fig. 4, the limit bolt, the baffle and the rotating seat are located at the same side of the fixed frame. The flange is matched with the stop rod on the fixed frame in a stop way to limit the rotating angle range of the rotating seat. During specific adjustment, the screwing depth of the limiting bolts 4 on the two sides of the rotating seat 2 in the baffle plate screw holes is increased, and the rotating angle range of the rotating seat 2 can be adjusted; on the contrary, the screwing depth of the limiting bolts 4 on the two sides of the rotary seat 2 in the baffle screw hole is reduced, and the rotating angle range of the rotary seat 2 can be enlarged.
Claims (7)
1. The utility model provides a motor sweeper rolls sweeps mounting bracket, a serial communication port, motor sweeper roll sweep the mounting bracket including be used for with automobile body fixed connection's mount with be used for installing the roating seat that rolls to sweep, the roating seat rotates the assembly at mount length direction's middle part and mount, the vertical downwardly extending of axis of rotation, the mount on be connected with and be used for driving the roating seat around axis of rotation and mount emergence relative pivoted flexible drive arrangement, flexible drive arrangement one end is articulated with the mount, the other end is articulated with the roating seat.
2. The sweeper truck rolling sweep mounting bracket of claim 1 wherein the swivel base is provided with a stop structure and the mounting bracket is provided with a stop engagement structure for stop engagement with the stop structure to limit the range of swivel base rotation angles.
3. The sweeper truck roll-broom mounting frame according to claim 2, wherein the stop-engagement structure comprises a stop seat fixed to the mounting frame and a stop rod inserted into the stop seat and adjustable in screwing-in depth, one end of the stop rod being in stop-engagement with the stop structure.
4. The sweeper rolling sweeper mounting bracket of claim 1, wherein the telescopic driving device comprises two telescopic cylinders, the cylinder bodies of the two telescopic cylinders are fixed together, the cylinder rods stretch in opposite directions, the fixing frame is provided with a telescopic cylinder connecting seat, the cylinder rod of the telescopic cylinder close to the telescopic cylinder connecting seat is hinged to the telescopic cylinder connecting seat, the cylinder body is provided with a bearing frame matched with the telescopic cylinder connecting seat, and the bearing frame is matched with the telescopic cylinder connecting seat in a guiding manner in the moving direction of the cylinder body and in a rotation stopping manner in the up-down direction.
5. The sweeper truck rolling sweeper mounting bracket of claim 4, wherein the bearing frame comprises at least two sliding plates respectively arranged at two sides of the cylinder body, and the sliding plates are matched with the telescopic cylinder connecting seat in a guiding and rotation stopping way through long holes formed in the sliding plates.
6. The sweeper truck roll broom mounting bracket of claim 1, wherein the telescoping drive means is a telescoping cylinder connected between the mounting bracket and the swivel.
7. A sweeper truck roll broom mounting as claimed in any one of claims 4 to 6, in which the telescopic cylinder is a pneumatic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810615344.1A CN110607776B (en) | 2018-06-14 | 2018-06-14 | Sweeper rolls and sweeps mounting bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810615344.1A CN110607776B (en) | 2018-06-14 | 2018-06-14 | Sweeper rolls and sweeps mounting bracket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110607776A true CN110607776A (en) | 2019-12-24 |
| CN110607776B CN110607776B (en) | 2021-07-20 |
Family
ID=68887992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810615344.1A Active CN110607776B (en) | 2018-06-14 | 2018-06-14 | Sweeper rolls and sweeps mounting bracket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110607776B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2397181Y (en) * | 1999-10-08 | 2000-09-20 | 高象利 | Pull-type road sweeper |
| CN2687176Y (en) * | 2004-03-25 | 2005-03-23 | 福建省龙岩市龙马专用车辆制造有限公司 | Water spraying frame for cleaning vehicle |
| CN201321605Y (en) * | 2008-12-05 | 2009-10-07 | 黎卫民 | Downtown road sweeper |
| CN202323836U (en) * | 2011-11-13 | 2012-07-11 | 张进文 | Road sweeper |
| DE102013204386A1 (en) * | 2013-03-13 | 2014-09-18 | HORIZON CAPITAL INVESTMENT GmbH | Street cleaning vehicle |
| CN104634582A (en) * | 2013-11-08 | 2015-05-20 | 北汽福田汽车股份有限公司 | Steering wheel limit device and method |
| CN204715262U (en) * | 2015-05-25 | 2015-10-21 | 济宁小林清洁设备有限公司 | Adjusting device for rolling brush |
-
2018
- 2018-06-14 CN CN201810615344.1A patent/CN110607776B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2397181Y (en) * | 1999-10-08 | 2000-09-20 | 高象利 | Pull-type road sweeper |
| CN2687176Y (en) * | 2004-03-25 | 2005-03-23 | 福建省龙岩市龙马专用车辆制造有限公司 | Water spraying frame for cleaning vehicle |
| CN201321605Y (en) * | 2008-12-05 | 2009-10-07 | 黎卫民 | Downtown road sweeper |
| CN202323836U (en) * | 2011-11-13 | 2012-07-11 | 张进文 | Road sweeper |
| DE102013204386A1 (en) * | 2013-03-13 | 2014-09-18 | HORIZON CAPITAL INVESTMENT GmbH | Street cleaning vehicle |
| CN104634582A (en) * | 2013-11-08 | 2015-05-20 | 北汽福田汽车股份有限公司 | Steering wheel limit device and method |
| CN204715262U (en) * | 2015-05-25 | 2015-10-21 | 济宁小林清洁设备有限公司 | Adjusting device for rolling brush |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110607776B (en) | 2021-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7651295B2 (en) | Extension screed for a paving vehicle | |
| CN109024408B (en) | Intelligent road cleaning vehicle side brush device | |
| CN111571081B (en) | Pipeline inner wall welding robot | |
| CN110607776B (en) | Sweeper rolls and sweeps mounting bracket | |
| RU2603691C2 (en) | Device for positioning of cargo vehicle mirror | |
| CN110607775B (en) | Cleaning vehicle | |
| CN208962925U (en) | A kind of sliding rail assembly and the automobile using the sliding rail assembly | |
| CN113983300A (en) | A real-time display device of progress for construction management | |
| CN209356951U (en) | A kind of computer display | |
| CN207588777U (en) | A kind of angle of photovoltaic panel regulating device | |
| CN113803613A (en) | Projecting device with adjustable education and training is used | |
| CN216615628U (en) | Lifting mechanism for side brush | |
| CN209419746U (en) | A kind of monitoring system high-precision camera | |
| CN203546651U (en) | Road surface cleaning maintenance truck and road surface fixed point cleaning structure thereof | |
| CN220414767U (en) | Automatic screeding device of shear force wall | |
| CN219068114U (en) | Photovoltaic support capable of being adjusted in extending mode | |
| CN217961857U (en) | Dust collector for house construction | |
| CN217948669U (en) | Screed plate device and paver | |
| CN210457204U (en) | Gantry crane walking rail support structure | |
| CN219295320U (en) | Vehicle-mounted camera mounting bracket | |
| CN217833498U (en) | Engine assembling device | |
| CN216739152U (en) | Hanging adjusting device for sliding mould | |
| CN218951856U (en) | Railway ballast cleaning mechanism | |
| CN214033281U (en) | Mechanically-assembled screed width adjusting device and paver | |
| CN213681581U (en) | Asphalt spraying device of highway asphalt pavement maintenance truck |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |