CN212270616U - Highway subgrade construction is with keeping water cloth and spreading device - Google Patents
Highway subgrade construction is with keeping water cloth and spreading device Download PDFInfo
- Publication number
- CN212270616U CN212270616U CN202020750907.0U CN202020750907U CN212270616U CN 212270616 U CN212270616 U CN 212270616U CN 202020750907 U CN202020750907 U CN 202020750907U CN 212270616 U CN212270616 U CN 212270616U
- Authority
- CN
- China
- Prior art keywords
- plate
- water
- main body
- groove
- retaining cloth
- 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
- Revetment (AREA)
Abstract
The utility model provides a water-retaining cloth spreading device for highway subgrade construction, which relates to the technical field of highway subgrade construction equipment and aims to solve the problems that when the existing water-retaining cloth spreading device is used, the water-retaining cloth used by highway subgrades with different widths has different sizes, so that the water-retaining cloth cannot be spread on the highway subgrade in time, and the water-retaining cloth can be spread by multiple people if manual work is adopted, thereby reducing the working efficiency; the guide groove is arranged at the top of the main body, and the slot on the side surface of the guide groove is arranged on the side surface of the main body; the bottom end of the water tank is connected with the top of the main body, and an inner groove at the bottom of the water tank is formed in the top of the main body; the inner end of the panel is connected with the bottom end of the side face of the support. The water-retaining cloth with different sizes is installed by adjusting the distance between the sliding blocks, the water-retaining cloth is installed on the cross rod, the sliding blocks at two ends move towards the middle by the aid of springs on the inner sides of the sliding blocks, and the rolling balls in the clamping plates can reduce the friction force of the water-retaining cloth in rotation.
Description
Technical Field
The utility model belongs to the technical field of highway subgrade construction equipment, more specifically say, in particular to highway subgrade construction is with keeping water cloth and spreading device.
Background
The roadbed is the foundation of a track or a road surface and is a geotechnical structure formed by excavation or filling, the roadbed mainly has the functions of providing necessary conditions for track or road surface laying and train or driving operation, bearing static load and dynamic load of the track, rolling stock or road surface and traffic load, and simultaneously transmitting and diffusing the load to the deep part of the foundation, and has high strength.
Based on discovery among the prior art, current water-retaining cloth spills device when using, can not install the use to the water-retaining cloth of size difference, and the water-retaining cloth size that the highway subgrade of different width used is different, leads to water-retaining cloth to in time spread to the highway subgrade and spills, adopts artifical many people of needs to spread water-retaining cloth, and is more time-consuming and energy-consuming, reduces work efficiency.
In view of the above, the present invention provides a water-retaining cloth spreading device for highway subgrade construction, which is developed and improved in view of the existing structure and defects, so as to achieve the purpose of higher practical value.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a highway subgrade construction is with retaining cloth scattering device to solve current retaining cloth scattering device when using, can not install the use to the different retaining cloth of size, the retaining cloth size that the highway subgrade of different width used is different, lead to retaining cloth can not in time spread to the highway subgrade, adopt artifical if need many people to spread the retaining cloth, it wastes time and energy to compare, reduce work efficiency's problem.
The utility model discloses highway subgrade construction is spread with water retaining cloth and is spilt the purpose and the efficiency of device, is reached by following specific technological means:
a water-retaining cloth spreading device for highway subgrade construction comprises a main body, a guide groove, a water tank and a panel; the main body is of a rectangular plate structure, and handrails are arranged at the side ends of the main body; the guide groove is arranged at the top of the main body, and the slot on the side surface of the guide groove is arranged on the side surface of the main body; a water level gauge is arranged on the side surface of the water tank, the bottom end of the water tank is connected with the top of the main body, and an inner groove in the bottom of the water tank is formed in the top of the main body; the outer end of the panel is of an arc-shaped structure, and the inner end of the panel is connected with the bottom end of the side face of the support.
Furthermore, the main body comprises a sliding groove, a sliding block, a plug board, a clamping plate and a cross rod; the sliding chute is of a T-shaped structure and is arranged at the bottom of the main body; the top end of the sliding block is embedded in the sliding groove, and the inner side of the sliding block is connected with the inner side of the sliding groove through a spring; the inserting plate is of a T-shaped structure and is inserted at the outer end of the sliding chute; the inside of the clamping plate is provided with a ball, and the side surface of the clamping plate is arranged at the bottom of the inner side of the sliding block through a rotating shaft; the cross rod is of a cylindrical structure, and the side end of the cross rod is installed inside the clamping plate.
Furthermore, the guide groove comprises a guide block, a bracket, a slot, a clamping groove and a clamping plate; the guide block is of a T-shaped structure and is arranged in the guide groove; wheels are arranged at the bottom end of the support, and the top end of the support is embedded in the guide block; the slot is of a rectangular structure and is arranged on the side surface of the guide groove; the clamping groove is formed in the side face of the support, and the inner end of the clamping plate is arranged in the clamping groove; the cardboard is the rectangular plate structure, and the outside end of cardboard is installed in the inside of slot.
Furthermore, the water tank comprises an inner groove, a rotating plate and a baffle plate; the inner groove is of a circular structure, and a rotating plate is arranged inside the inner groove; the outer end of the rotating plate is provided with a handle, and the outer side of the rotating plate is provided with a water hole; the baffle is L-shaped structure, and the baffle is installed at the top of the rotating plate.
Furthermore, the panel comprises a top plate, a bottom plate and a rotating wheel; the side surface of the top plate is provided with a lug, the lug on the side surface of the top plate is arranged at the outer end of the panel through a rotating shaft, and the side end of the top plate is provided with the rotating shaft; the bottom of the bottom plate is of an arc-shaped structure, and the top of the bottom plate is connected with the bottom of the top plate through a spring; the runner is of a cylindrical structure and is arranged on the side face of the bottom plate.
Compared with the prior art, the utility model discloses following beneficial effect has:
in the device, a main body is arranged, water-retaining cloths with different sizes can be installed by adjusting the distance between the sliding blocks, a sliding groove is installed at the bottom of the main body, when the water-retaining cloths with different sizes are installed, firstly, the inserting plates at the outer end of the sliding groove are drawn out, the sliding blocks are moved outwards under the action of manpower, meanwhile, the clamping plates are driven to move, the clamping plates can be detached from the side ends of the cross rods, the water-retaining cloths are installed on the cross rods, the sliding blocks are installed at the outer ends of the sliding groove, the inner sides of the sliding blocks are connected with the inner sides of the sliding groove through springs, the sliding blocks at the two ends can move towards the middle, meanwhile, the sliding blocks adapt to the length of the water-retaining cloths, the sliding blocks drive the clamping plates to clamp the two ends of the water-retaining cloths, balls are installed inside the clamping plates, the friction force can be reduced when the water-retaining cloths rotate, the water-, because vibrations drop the slider, just can promote the main part to carry out work alone to solved current water-retaining cloth and spread the device when using, can not install the use to the water-retaining cloth of size difference, the water-retaining cloth size that the highway subgrade of different width used is different, lead to water-retaining cloth to in time spread the highway subgrade, adopt artifical many people of needs to spread the water-retaining cloth, it is more time-consuming and energy-consuming, reduce work efficiency's problem.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic diagram of a partially enlarged structure of a portion a of the present invention, which is drawn from fig. 1.
Fig. 3 is a schematic view of a three-dimensional structure of the slider of the present invention.
Fig. 4 is a schematic side view of the guide block of the present invention.
Fig. 5 is a schematic side view of the rotating plate of the present invention.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. a main body; 101. a chute; 102. a slider; 103. inserting plates; 104. a splint; 105. a cross bar; 2. a guide groove; 201. a guide block; 202. a support; 203. a slot; 204. a card slot; 205. clamping a plate; 3. a water tank; 301. an inner tank; 302. rotating the plate; 303. a baffle plate; 4. a panel; 401. a top plate; 402. a base plate; 403. a rotating wheel.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in figures 1 to 5:
the utility model provides a water-retaining cloth spreading device for highway subgrade construction, which comprises a main body 1, a guide groove 2, a water tank 3 and a panel 4; the main body 1 is of a rectangular plate structure, and handrails are arranged at the side ends of the main body 1; the guide groove 2 is arranged at the top of the main body 1, and the slot 203 at the side of the guide groove 2 is arranged at the side of the main body 1; a water level gauge is arranged on the side surface of the water tank 3, the bottom end of the water tank 3 is connected with the top of the main body 1, and an inner groove 301 at the bottom of the water tank 3 is arranged at the top of the main body 1; the outer end of the panel 4 is of an arc structure, the inner end of the panel 4 is connected with the bottom end of the side face of the support 202, the sliding block 102 is installed, the sliding block 102 is driven by a spring on the inner side of the sliding block 102 to move towards the middle, meanwhile, the sliding block 102 drives the clamping plates 104 to clamp two ends of the water-retaining cloth, when the water-retaining cloth rotates, the balls inside the clamping plates 104 can reduce friction force and accelerate spreading speed, after the height of the support 202 is adjusted, the clamping plates 205 penetrate through the slots 203, the inner ends of the clamping plates 205 are inserted into the slots 204, meanwhile, the guide blocks 201 and the support 202 are fixed, sliding is prevented when the main body 1 moves, the rotating plates 302 rotate inside the inner grooves 301 according to actual requirements, water can be sprinkled, the water-retaining cloth has different sizes, the baffle plates 303 can be adjusted on the top of the rotating plates 302, the baffle plates 303 move inside the inner grooves 301, the water outlet amount of the rotating plates 302 can be blocked according to the size of, the stone is pushed to two sides by the bottom plate 402, the rotating wheel 403 on the front side of the bottom plate 402 is convenient for rolling the stone, and the stone is prevented from breaking the water retaining cloth, the main body 1 comprises a sliding groove 101, a sliding block 102, an inserting plate 103, a clamping plate 104 and a cross rod 105; the chute 101 is of a T-shaped structure, and the chute 101 is arranged at the bottom of the main body 1; the top end of the sliding block 102 is embedded in the sliding groove 101, and the inner side of the sliding block 102 is connected with the inner side of the sliding groove 101 through a spring; the inserting plate 103 is of a T-shaped structure, and the inserting plate 103 is inserted at the outer end of the sliding groove 101; the inside of the clamping plate 104 is provided with a ball, and the side surface of the clamping plate 104 is arranged at the bottom of the inner side of the sliding block 102 through a rotating shaft; the cross bar 105 is of a cylindrical structure, the side end of the cross bar 105 is arranged inside the clamping plate 104, the distance between the sliding blocks 102 can be adjusted for water-retaining cloth with different sizes to be installed, the inserting plate 103 is pulled out from the outer end of the sliding groove 101 through the action of human force, the sliding blocks 102 are moved along the sliding groove 101, the sliding blocks 102 are disassembled, the clamping plate 104 is disassembled from the side end of the cross bar 105, and the water-retaining cloth is installed on the cross bar 105, wherein the guide groove 2 comprises a guide block 201, a support 202, a slot 203, a clamping groove 204 and a clamping plate 205; the guide block 201 is of a T-shaped structure, and the guide block 201 is arranged inside the guide groove 2; wheels are arranged at the bottom end of the support 202, and the top end of the support 202 is embedded in the guide block 201; the slot 203 is of a rectangular structure, and the slot 203 is arranged on the side surface of the guide groove 2; the clamping groove 204 is arranged on the side surface of the bracket 202, and the inner end of the clamping plate 205 is arranged in the clamping groove 204; the clamping plate 205 is of a rectangular plate structure, the outer end of the clamping plate 205 is installed inside the slot 203, when the speed of the dry soil mixed with mud is low, the concrete cannot walk on the ground, the distance between the guide blocks 201 can be adjusted, the guide blocks 201 move towards the two sides of the main body 1, the support 202 is driven to move, when the road beds on the two sides of the ground are uneven, the height of the support 202 can be adjusted, the main body 1 is on the same plane, and the water tank 3 comprises an inner groove 301, a rotating plate 302 and a baffle 303; the inner groove 301 is of a circular structure, and a rotating plate 302 is arranged inside the inner groove 301; a handle is arranged at the outer end of the rotating plate 302, and a water hole is arranged at the outer side of the rotating plate 302; the baffle 303 is of an L-shaped structure, the baffle 303 is installed at the top of the rotating plate 302, water can be sprayed on the rotating plate through the water tank 3 while water-retaining cloth is paved, a water level meter is arranged on the side surface of the water tank 3, the water quantity condition in the water tank 3 can be observed timely, the water quantity can be adjusted according to the actual requirement of the ground, water resource waste is prevented, water outlets with different sizes are arranged on the outer side of the rotating plate 302, and the panel 4 comprises a top plate 401, a bottom plate 402 and a rotating wheel 403; a convex block is arranged on the side surface of the top plate 401, the convex block on the side surface of the top plate 401 is arranged at the outer end of the panel 4 through a rotating shaft, and the rotating shaft is arranged at the side end of the top plate 401; the bottom of the bottom plate 402 is of an arc-shaped structure, and the top of the bottom plate 402 is connected with the bottom of the top plate 401 through a spring; runner 403 is the cylinder structure, and runner 403 installs in the side of bottom plate 402, and main part 1 is when removing the shop to keep water cloth, and there is some stone on the road surface possibly, and panel 4 installs in the front side of support 202 wheel, can adjust the angle of roof 401 and bottom plate 402 according to the distance between the support 202, is equipped with the pivot between two roof 401 and is convenient for adjust the angle between the roof 401.
The specific use mode and function of the embodiment are as follows:
in the utility model, when the water-retaining cloth spreading device is used, firstly, the distance between the guide blocks 201 is adjusted, when the concrete drying speed is slower, the distance between the guide blocks 201 is adjusted, the support 202 in the guide blocks 201 is driven to move simultaneously, the height of the support 202 can be adjusted due to uneven roadbed at two sides, the clamping plate 205 passes through the slot 203 and is clamped in the clamping groove 204, the guide blocks 201 and the support 202 are fixed, the main body 1 is positioned on the horizontal plane, the sliding block 102 is drawn out along the sliding groove 101 under the action of human force, the clamping plate 104 is simultaneously disassembled from the side end of the transverse rod 105, the water-retaining cloth is installed on the transverse rod 105, the sliding block 102 and the clamping plate 104 are installed, the spring at the inner side of the sliding block 102 drives the sliding block 102 to move, the distance between the adjusting sliding blocks 102 is suitable for the water-retaining cloths with different sizes, the clamping plate 104 clamps two ends of the water-retaining cloth, the ball inside the, water is sprinkled on the inner trough 301 by the water tank 3, the rotating plate 302 inside the inner trough 301 is rotated, water outlets with different sizes are arranged on the outer side of the rotating plate 302, suitable water outlets on the rotating plate 302 are adjusted according to actual requirements on the ground, the water retaining cloth is different according to the size of the water retaining cloth, the adjusting baffle 303 moves in the inner trough 301, the water outlet area of the rotating plate 302 can be adjusted by the baffle 303, the main body 1 is moved, stones possibly on the road surface can be slightly generated, the water retaining cloth is easily damaged, the angle of the top plate 401 can be adjusted according to the distance between the supports 202, the angle between the top plates 401 is convenient to adjust by the rotating shaft arranged between the two top plates 401, the top plates 401 drive the bottom plate 402 to move, the ground is slightly raised, the bottom plate 402 crosses the raised surface through spring contraction, the rotating wheel 403 on the front side of the.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (5)
1. The utility model provides a highway subgrade construction is spread with water retaining cloth and is spilt device which characterized in that: the method comprises the following steps: the water tank comprises a main body (1), a guide groove (2), a water tank (3) and a panel (4); the main body (1) is of a rectangular plate structure, and handrails are arranged at the side ends of the main body (1); the guide groove (2) is arranged at the top of the main body (1), and the slot (203) on the side surface of the guide groove (2) is arranged on the side surface of the main body (1); a water level meter is arranged on the side surface of the water tank (3), the bottom end of the water tank (3) is connected with the top of the main body (1), and an inner groove (301) at the bottom of the water tank (3) is arranged at the top of the main body (1); the outer end of the panel (4) is of an arc-shaped structure, and the inner end of the panel (4) is connected with the bottom end of the side face of the support (202).
2. The water-retaining cloth spreading device for highway subgrade construction according to claim 1, characterized in that: the main body (1) comprises a sliding groove (101), a sliding block (102), an inserting plate (103), a clamping plate (104) and a cross rod (105); the sliding chute (101) is of a T-shaped structure, and the sliding chute (101) is arranged at the bottom of the main body (1); the top end of the sliding block (102) is embedded in the sliding groove (101), and the inner side of the sliding block (102) is connected with the inner side of the sliding groove (101) through a spring; the inserting plate (103) is of a T-shaped structure, and the inserting plate (103) is inserted at the outer end of the sliding groove (101); balls are arranged in the clamping plate (104), and the side surface of the clamping plate (104) is arranged at the bottom of the inner side of the sliding block (102) through a rotating shaft; the cross rod (105) is of a cylindrical structure, and the side end of the cross rod (105) is installed inside the clamping plate (104).
3. The water-retaining cloth spreading device for highway subgrade construction according to claim 1, characterized in that: the guide groove (2) comprises a guide block (201), a support (202), a slot (203), a clamping groove (204) and a clamping plate (205); the guide block (201) is of a T-shaped structure, and the guide block (201) is arranged in the guide groove (2); wheels are arranged at the bottom end of the support (202), and the top end of the support (202) is embedded in the guide block (201); the slot (203) is of a rectangular structure, and the slot (203) is arranged on the side surface of the guide groove (2); the clamping groove (204) is formed in the side face of the support (202), and the inner end of the clamping plate (205) is installed inside the clamping groove (204); the clamping plate (205) is of a rectangular plate structure, and the outer end of the clamping plate (205) is installed inside the slot (203).
4. The water-retaining cloth spreading device for highway subgrade construction according to claim 1, characterized in that: the water tank (3) comprises an inner tank (301), a rotating plate (302) and a baffle (303); the inner groove (301) is of a circular structure, and a rotating plate (302) is arranged in the inner groove (301); the outer end of the rotating plate (302) is provided with a handle, and the outer side of the rotating plate (302) is provided with a water hole; the baffle (303) is of an L-shaped structure, and the baffle (303) is arranged at the top of the rotating plate (302).
5. The water-retaining cloth spreading device for highway subgrade construction according to claim 1, characterized in that: the panel (4) comprises a top plate (401), a bottom plate (402) and a rotating wheel (403); the side surface of the top plate (401) is provided with a convex block, the convex block on the side surface of the top plate (401) is arranged at the outer end of the panel (4) through a rotating shaft, and the rotating shaft is arranged at the side end of the top plate (401); the bottom of the bottom plate (402) is of an arc-shaped structure, and the top of the bottom plate (402) is connected with the bottom of the top plate (401) through a spring; the rotating wheel (403) is of a cylindrical structure, and the rotating wheel (403) is arranged on the side surface of the bottom plate (402).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202020750907.0U CN212270616U (en) | 2020-05-09 | 2020-05-09 | Highway subgrade construction is with keeping water cloth and spreading device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202020750907.0U CN212270616U (en) | 2020-05-09 | 2020-05-09 | Highway subgrade construction is with keeping water cloth and spreading device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN212270616U true CN212270616U (en) | 2021-01-01 |
Family
ID=73886141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202020750907.0U Expired - Fee Related CN212270616U (en) | 2020-05-09 | 2020-05-09 | Highway subgrade construction is with keeping water cloth and spreading device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN212270616U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114561894A (en) * | 2022-03-29 | 2022-05-31 | 宁波市政工程建设集团股份有限公司 | Machine for laying road, bridge and pavement |
CN114570737A (en) * | 2022-04-18 | 2022-06-03 | 姚亚鹏 | Construction engineering foundation is dust screen laying device for earthwork |
-
2020
- 2020-05-09 CN CN202020750907.0U patent/CN212270616U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114561894A (en) * | 2022-03-29 | 2022-05-31 | 宁波市政工程建设集团股份有限公司 | Machine for laying road, bridge and pavement |
CN114570737A (en) * | 2022-04-18 | 2022-06-03 | 姚亚鹏 | Construction engineering foundation is dust screen laying device for earthwork |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN212270616U (en) | Highway subgrade construction is with keeping water cloth and spreading device | |
CN108867274B (en) | Paver for paving concrete pavement | |
CN112538840A (en) | Landscape lake bank protection brick construction equipment | |
CN216586034U (en) | Road surface leveling device is used in road construction | |
CN210458872U (en) | Bituminous paving construction is with leveling device | |
CN210151528U (en) | Highway disease renovation cement stabilized macadam base construction is spread and is assisted and compaction device | |
CN216379476U (en) | A tamping unit for earthwork | |
CN111472240A (en) | Landscape garden pavement construction process | |
CN216786756U (en) | Special road bed filling construction equipment for highway engineering | |
CN210263007U (en) | Portable foundation paving device | |
CN214831694U (en) | Road roller for municipal works asphalt laying | |
CN208981094U (en) | A kind of cement stabilized macadam base edge film automatic covering device | |
CN209907168U (en) | Road and bridge curb ramming device | |
CN209412778U (en) | A kind of small-sized snow shoveling machine | |
CN220724783U (en) | Road asphalt laying device | |
CN221320544U (en) | Municipal road roadbed anti-sedimentation device | |
CN213896643U (en) | Compaction mechanism of road roller | |
CN213295986U (en) | Template supporting structure for asphalt roadbed construction | |
CN216615400U (en) | Automatic road shoulder hardening paving equipment | |
CN217352016U (en) | Roadbed is laid with paving device | |
CN218263348U (en) | High-adaptability leveling device based on expressway bituminous pavement | |
CN214992870U (en) | Device for quickly laying gravel cushion of concrete pipeline | |
CN215829211U (en) | Laying device is used in construction of highway bituminous paving | |
CN214832764U (en) | Backfill road construction equipment | |
CN214786094U (en) | Concrete paving device convenient to adjust horizontal angle |
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: 20210101 Termination date: 20210509 |