CN215672012U - Rotary drilling rig with drill bit easy to clean - Google Patents
Rotary drilling rig with drill bit easy to clean Download PDFInfo
- Publication number
- CN215672012U CN215672012U CN202122019830.7U CN202122019830U CN215672012U CN 215672012 U CN215672012 U CN 215672012U CN 202122019830 U CN202122019830 U CN 202122019830U CN 215672012 U CN215672012 U CN 215672012U
- Authority
- CN
- China
- Prior art keywords
- rotary drilling
- drilling rig
- drill bit
- clean
- fixedly installed
- 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.)
- Active
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model provides a rotary drilling rig with a drill bit easy to clean, and belongs to the technical field of rotary drilling rigs. The rotary drilling rig with the drill bit easy to clean comprises rotary drilling equipment, a cleaning structure and a fixing structure. The rotary drilling rig comprises a rotary drilling rig body, a track and an adjusting frame, wherein the track is fixedly installed at the bottom of the rotary drilling rig body, the cleaning structure comprises a fixing frame, a cylinder and a water pump, the fixing frame is fixed on the surface of the adjusting frame, a spray pipe is fixedly installed at the output end of the cylinder, the output end of the water pump is communicated with a connecting pipe, a spray head is installed at the end part of a gooseneck pipe, the fixing structure comprises a supporting plate, a rotating piece and a positioning piece, the rotating piece is fixedly installed on the connecting plate, and the positioning piece is fixedly installed on the rotating piece. The utility model can conveniently clean the drill bit, and simultaneously, the cleaning is more comprehensive, thereby reducing the rusting of the drill bit by dirt and prolonging the service life.
Description
Technical Field
The utility model relates to the technical field of rotary excavating machines, in particular to a rotary drilling rig with a drill bit easy to clean.
Background
The rotary digging machine is also called a rotary drilling rig and a pile driver. The rotary drilling machine is a comprehensive drilling machine, can be used for various bottom layers, and has the characteristics of high hole forming speed, less pollution, strong maneuverability and the like. Short auger bits perform dry excavation operations, and rotary drill bits may also be used to perform wet excavation operations with mud dado. The rotary excavator can be matched with a hammer to drill and dig holes in hard stratum. If the reamer is matched with a reaming head drilling tool, reaming operation can be carried out at the bottom of the hole. The rotary excavating machine adopts a plurality of layers of telescopic drill rods, has less drilling auxiliary time and low labor intensity, does not need slurry to discharge slag circularly, saves cost and is particularly suitable for the basic construction of urban construction.
At present, the conventional rotary drilling rig with the drill bit easy to clean is inconvenient to clean after being used, so that the drill bit is easy to corrode for a long time, and the service life of the rotary drilling rig is shortened.
SUMMERY OF THE UTILITY MODEL
In order to make up for the defects, the utility model provides a rotary drilling rig with an easily cleaned drill bit, and aims to solve the problem that the drill bit is inconvenient to clean after the rotary drilling rig with the easily cleaned drill bit is used.
The utility model is realized by the following steps:
the utility model provides a rotary drilling rig with a drill bit easy to clean.
The rotary drilling rig comprises a rotary drilling rig body, a track and an adjusting frame, wherein the track is fixedly arranged at the bottom of the rotary drilling rig body, the adjusting frame is fixedly arranged at the output end of the rotary drilling rig body, the cleaning structure comprises a fixing frame, a cylinder and a water pump, the fixing frame is fixedly arranged on the surface of the adjusting frame, the cylinder is fixedly arranged on one side of the fixing frame, a spray pipe is fixedly arranged at the output end of the cylinder, a spray hole is formed in the spray pipe, the water pump is fixedly arranged on the top surface of the fixing frame, the output end of the water pump is communicated with a connecting pipe, the connecting pipe is communicated with the spray pipe through a pipe joint, a gooseneck pipe is communicated with the bottom of the spray pipe, a spray head is arranged at the end part of the gooseneck pipe, the fixing structure comprises a support plate, a rotating part and a positioning part, the support plate is fixedly arranged on the rotary drilling rig body, the bottom of the supporting plate is fixedly provided with a connecting plate, the rotating piece is fixedly arranged on the connecting plate, and the positioning piece is fixedly arranged on the rotating piece.
In one embodiment of the utility model, a connecting frame is fixed at the output end of the air cylinder, and the connecting frame is fixedly connected with the spray pipe through a fixing piece.
In one embodiment of the utility model, the fixing member includes a threaded post fixedly connected to the nozzle, the threaded post penetrating through the connecting frame, and a nut threadedly connected to the threaded post.
In an embodiment of the present invention, the spray holes are distributed on the spray pipe at equal intervals.
In an embodiment of the utility model, the rotating member includes a servo motor and a transverse plate, the servo motor is fixedly installed at the bottom of the connecting plate, a shaft rod is installed at an end of an output shaft of the servo motor, the shaft rod is rotatably connected inside the supporting plate, and the transverse plate is fixedly connected with the shaft rod.
In an embodiment of the utility model, the positioning element comprises a hydraulic cylinder and a pressing plate, the hydraulic cylinder is fixedly installed inside the transverse plate, the pressing plate is fixed at the output end of the hydraulic cylinder, and a bevel gear part is fixed at the bottom of the pressing plate.
In an embodiment of the present invention, the cross section of the tapered teeth portion is a cone, and the tapered teeth portion is equidistantly distributed at the bottom of the pressure plate.
In an embodiment of the utility model, a clamping groove matched with the hydraulic cylinder is formed in the surface of the supporting plate, and the upper end of the hydraulic cylinder is clamped in the clamping groove.
In one embodiment of the utility model, connecting pieces are symmetrically fixed on two sides of the cylinder.
In an embodiment of the utility model, the connecting piece comprises connecting lugs and bolts, the connecting lugs are symmetrically fixed on two sides of the cylinder, and the bolts penetrate through the connecting lugs and are in threaded connection with the fixing frame.
The utility model has the beneficial effects that: according to the rotary drilling rig with the drill bit easy to clean, which is obtained through the design, after the rotary drilling rig is used, the air cylinder works to drive the spray pipe to move to one side, so that the spray hole is aligned to the drill bit at the output end of the rotary drilling rig, then the water inlet pipe of the water pump is connected with an external water source, the water pump works to spray cleaning water out through the spray hole in the surface of the spray pipe, and meanwhile, the rotary drilling rig body is used for driving the drill bit to rotate, so that dirt on the surface of the drill bit can be cleaned quickly, meanwhile, the gooseneck pipe can be bent in different directions, so that the bottom of the drill bit can be cleaned, the drill bit can be cleaned conveniently, meanwhile, the cleaning is more comprehensive, the rust of the dirt to the drill bit is reduced, and the service life of the rotary drilling rig is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a first view angle of a rotary drilling rig with a drill bit easy to clean according to an embodiment of the utility model;
FIG. 2 is a schematic structural view of a crawler belt of the rotary drilling rig with a drill bit easy to clean according to the embodiment of the utility model;
FIG. 3 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;
FIG. 4 is a schematic structural view of a rotary drilling rig fixing frame with a drill bit easy to clean according to an embodiment of the utility model;
FIG. 5 is an enlarged view of the utility model at B of FIG. 4;
FIG. 6 is an enlarged view of the utility model at C in FIG. 1.
In the figure: 100-rotary excavating equipment; 110-a rotary drilling rig body; 120-track; 130-an adjusting bracket; 200-cleaning the structure; 210-a mount; 220-a cylinder; 221-a connecting frame; 230-a nozzle; 231-spraying holes; 240-water pump; 241-connecting pipe; 250-gooseneck; 251-a spray head; 260-a fixing member; 261-a threaded post; 262-a screw cap; 270-a connector; 271-connecting lugs; 272-bolt; 300-a fixed structure; 310-a support plate; 311-card slot; 320-a connecting plate; 330-a rotating member; 331-a servo motor; 332-a shaft rod; 333-transverse plate; 340-a positioning element; 341-hydraulic cylinder; 342-a pressure plate; 343-tapered teeth.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Examples
Referring to fig. 1-6, the present invention provides a technical solution: a rotary drilling rig with a drill bit easy to clean comprises rotary drilling equipment 100, a cleaning structure 200 and a fixing structure 300.
The cleaning structure 200 is fixedly installed on the rotary drilling equipment 100 and used for cleaning a drill bit of the rotary drilling equipment 100, so that the drill bit is prevented from being rusted after being placed for a long time, the fixing structure 300 is fixedly installed on the rotary drilling equipment 100 and used for fixing the rotary drilling rig when the rotary drilling rig is used, and the rotary drilling stability is improved.
Referring to fig. 1 and 2, the rotary drilling rig 100 includes a rotary drilling rig body 110, a crawler 120 and an adjusting bracket 130, the crawler 120 is mounted and fixed at the bottom of the rotary drilling rig body 110, and the adjusting bracket 130 is mounted and fixed at the output end of the rotary drilling rig body 110.
A connecting frame 221 is fixed at the output end of the cylinder 220, and the connecting frame 221 is fixedly connected with the spray pipe 230 through a fixing piece 260; the fixing member 260 comprises a threaded column 261 and a nut 262, the threaded column 261 is fixedly connected with the spray pipe 230, the threaded column 261 penetrates through the connecting frame 221, the nut 262 is in threaded connection with the threaded column 261, the connecting frame 221 is sleeved on the threaded column 261, and then the fixing member is fixed through the nut 262, so that the spray pipe 230 can be conveniently disassembled and assembled; the nozzles 231 are equidistantly spaced on the nozzle 230, and the nozzles 231 are equidistantly spaced, so that the drill bit can be more conveniently and completely washed.
Referring to fig. 1, 3-5, the cleaning structure 200 includes a fixing frame 210, an air cylinder 220 and a water pump 240, the fixing frame 210 is fixed on the surface of the adjusting frame 130, the air cylinder 220 is installed and fixed on one side of the fixing frame 210, an output end of the air cylinder 220 is installed and fixed with a spray pipe 230, a spray hole 231 is formed inside the spray pipe 230, the water pump 240 is installed and fixed on the top surface of the fixing frame 210, an output end of the water pump 240 is communicated with a connecting pipe 241, the connecting pipe 241 is communicated with the spray pipe 230 through a pipe joint, a gooseneck 250 is communicated with the bottom of the spray pipe 230, and a spray head 251 is installed at the end of the gooseneck 250.
Connecting pieces 270 are symmetrically fixed on two sides of the cylinder 220; the connecting member 270 includes a connecting lug 271 and a bolt 272, the connecting lug 271 is symmetrically fixed on two sides of the cylinder 220, the bolt 272 penetrates through the connecting lug 271 and is screwed on the fixing frame 210, and the cylinder 220 can be conveniently disassembled and assembled through the arrangement of the connecting lug 271 and the bolt 272
Referring to fig. 1 and 6, the fixing structure 300 includes a supporting plate 310, a rotating member 330 and a positioning member 340, the supporting plate 310 is mounted and fixed on the rotary drilling rig body 110, a connecting plate 320 is fixed at the bottom of the supporting plate 310, the rotating member 330 is mounted and fixed on the connecting plate 320, and the positioning member 340 is mounted and fixed on the rotating member 330.
The positioning member 340 comprises a hydraulic cylinder 341 and a pressing plate 342, the hydraulic cylinder 341 is installed and fixed inside the transverse plate 333, the pressing plate 342 is fixed at the output end of the hydraulic cylinder 341, and a bevel gear part 343 is fixed at the bottom of the pressing plate 342; the section of the conical tooth part 343 is conical, the conical tooth parts 343 are distributed at the bottom of the pressure plate 342 at equal intervals, and the pressure plate 342 is driven to move downwards by the operation of the hydraulic cylinder 341, so that the conical tooth part 343 at the bottom of the pressure plate 342 is in contact with the ground, and the stability of the rotary drilling rig in the use process is improved; the draw-in groove 311 that matches with pneumatic cylinder 341 is seted up on the surface of backup pad 310, and the upper end joint of pneumatic cylinder 341 is in the inside of draw-in groove 311, and here through the setting of draw-in groove 311, can conveniently carry out spacing the placing to pneumatic cylinder 341.
Specifically, the working principle of the rotary drilling rig with the drill bit easy to clean is as follows: when the rotary drilling rig is used, the shaft lever 332 is driven to rotate through the servo motor 331, so that the transverse plate 333 rotates along with the rotary drilling rig, when the rotary drilling rig rotates to a proper position, the hydraulic cylinder 341 works to drive the pressing plate 342 to move downwards, the bevel gear part 343 is in contact with the ground and extrudes, so that the stability of the rotary drilling rig can be improved when the rotary drilling rig is used, after the rotary drilling rig is used, the spray pipe 230 is driven to move towards one side through the working of the air cylinder 220, the spray hole 231 is aligned with a drill bit at the output end of the rotary drilling rig, then the water inlet pipe of the water pump 240 is connected with an external water source, the water pump 240 works to spray cleaning water out through the spray holes 231 on the surface of the spray pipe 230, meanwhile, the drill bit is driven to rotate by the rotary drilling rig body 110, so that dirt on the surface of the drill bit can be cleaned rapidly, meanwhile, the gooseneck pipe 250 can be bent towards different directions, so that the bottom of the drill bit can be cleaned, therefore, the drill bit can be conveniently cleaned, and the cleaning is more comprehensive, so that the rusting of the drill bit by dirt is reduced, and the service life is prolonged.
It should be noted that the specific model specifications of the air cylinder 220, the water pump 240, the servo motor 331 and the hydraulic cylinder 341 need to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, so detailed description is omitted.
The power supply of the air cylinder 220, the water pump 240, the servo motor 331 and the hydraulic cylinder 341 and the principle thereof will be apparent to those skilled in the art and will not be described in detail herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A rotary drilling rig with a drill bit easy to clean is characterized by comprising
The rotary drilling rig comprises a rotary drilling rig body (110), a crawler (120) and an adjusting frame (130), wherein the crawler (120) is fixedly installed at the bottom of the rotary drilling rig body (110), and the adjusting frame (130) is fixedly installed at the output end of the rotary drilling rig body (110);
the cleaning structure (200) comprises a fixing frame (210), an air cylinder (220) and a water pump (240), the fixing frame (210) is fixed on the surface of the adjusting frame (130), the air cylinder (220) is fixedly installed on one side of the fixing frame (210), an output end of the air cylinder (220) is fixedly installed with a spray pipe (230), a spray hole (231) is formed in the spray pipe (230), the water pump (240) is fixedly installed on the top surface of the fixing frame (210), an output end of the water pump (240) is communicated with a connecting pipe (241), the connecting pipe (241) is communicated with the spray pipe (230) through a pipe joint, the bottom of the spray pipe (230) is communicated with a gooseneck pipe (250), and a spray head (251) is installed at the end part of the gooseneck pipe (250);
the fixing structure (300) comprises a supporting plate (310), a rotating part (330) and a positioning part (340), wherein the supporting plate (310) is fixedly installed on the rotary drilling rig body (110), a connecting plate (320) is fixedly arranged at the bottom of the supporting plate (310), the rotating part (330) is fixedly installed on the connecting plate (320), and the positioning part (340) is fixedly installed on the rotating part (330).
2. The rotary drilling rig with the drill bit easy to clean as claimed in claim 1, characterized in that a connecting frame (221) is fixed to an output end of the air cylinder (220), and the connecting frame (221) is fixedly connected with the spray pipe (230) through a fixing piece (260).
3. The rotary drilling rig with the drill bit easy to clean as claimed in claim 2, characterized in that the fixing piece (260) comprises a threaded column (261) and a nut (262), the threaded column (261) is fixedly connected with the spray pipe (230), the threaded column (261) penetrates through the connecting frame (221), and the nut (262) is in threaded connection with the threaded column (261).
4. The rotary drilling rig with the drill bit easy to clean as claimed in claim 1, wherein the spray holes (231) are distributed on the spray pipe (230) at equal intervals.
5. The rotary drilling rig with the drill bit easy to clean as claimed in claim 1, wherein the rotating member (330) comprises a servo motor (331) and a transverse plate (333), the servo motor (331) is fixedly installed at the bottom of the connecting plate (320), a shaft rod (332) is installed at the end of an output shaft of the servo motor (331), the shaft rod (332) is rotatably connected inside the supporting plate (310), and the transverse plate (333) is fixedly connected with the shaft rod (332).
6. The rotary drilling rig with the drill bit easy to clean as claimed in claim 5, characterized in that the positioning member (340) comprises a hydraulic cylinder (341) and a pressing plate (342), the hydraulic cylinder (341) is fixedly installed inside the cross plate (333), the pressing plate (342) is fixedly arranged at the output end of the hydraulic cylinder (341), and a conical tooth part (343) is fixedly arranged at the bottom of the pressing plate (342).
7. The rotary drilling rig with the drill bit easy to clean as claimed in claim 6, characterized in that the section of the conical tooth part (343) is conical, and the conical tooth parts (343) are distributed at the bottom of the pressure plate (342) at equal intervals.
8. The rotary drilling rig with the drill bit easy to clean as claimed in claim 6, wherein a clamping groove (311) matched with the hydraulic cylinder (341) is formed in the surface of the supporting plate (310), and the upper end of the hydraulic cylinder (341) is clamped in the clamping groove (311).
9. The rotary drilling rig with the drill bit easy to clean as claimed in claim 1, characterized in that connecting pieces (270) are symmetrically fixed on two sides of the cylinder (220).
10. The rotary drilling rig with the drill bit easy to clean as claimed in claim 9, characterized in that the connecting piece (270) comprises connecting lugs (271) and bolts (272), the connecting lugs (271) are symmetrically fixed on two sides of the cylinder (220), and the bolts (272) penetrate through the connecting lugs (271) and are in threaded connection with the fixed frame (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122019830.7U CN215672012U (en) | 2021-08-25 | 2021-08-25 | Rotary drilling rig with drill bit easy to clean |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122019830.7U CN215672012U (en) | 2021-08-25 | 2021-08-25 | Rotary drilling rig with drill bit easy to clean |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215672012U true CN215672012U (en) | 2022-01-28 |
Family
ID=79955995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122019830.7U Active CN215672012U (en) | 2021-08-25 | 2021-08-25 | Rotary drilling rig with drill bit easy to clean |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215672012U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116084954A (en) * | 2023-03-06 | 2023-05-09 | 陕西延长石油矿业有限责任公司 | Mine intelligent well construction method |
-
2021
- 2021-08-25 CN CN202122019830.7U patent/CN215672012U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116084954A (en) * | 2023-03-06 | 2023-05-09 | 陕西延长石油矿业有限责任公司 | Mine intelligent well construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215672012U (en) | Rotary drilling rig with drill bit easy to clean | |
| CN201056987Y (en) | Dust clearing device | |
| CN104343383A (en) | Drilling device for earthen archaeological site | |
| CN206972167U (en) | A kind of water conservancy construction drilling rod dimension supports device | |
| CN111335817B (en) | Rotary drilling machine impact drill hammer head convenient to assemble | |
| CN201013228Y (en) | Fully-hydraulic gas drainage multi-use drill | |
| JP2012062655A (en) | Drilling device | |
| CN213654767U (en) | Rotary drilling rig type obstacle clearing cutting device | |
| JPH0420693A (en) | Excavation method of deep hole and device thereof | |
| CN214944023U (en) | Mud device is swept to spiral drill stake machine drilling rod | |
| CN214532797U (en) | Flat bottom cleaning drill bit of rotary drilling rig | |
| CN205936394U (en) | Drilling machine for water conservancy construction | |
| CN212985100U (en) | Anti-tipping device of rotary drilling rig | |
| CN220791152U (en) | Frame column type drilling machine for coal mine tunnel | |
| CN215565689U (en) | Power head rotary pressing disc for rotary drilling rig | |
| CN218030054U (en) | Multifunctional hole-forming drill bit | |
| CN214886896U (en) | Novel connecting device | |
| CN213205557U (en) | Drill bit convenient for reaming for rotary drilling machine | |
| CN204326954U (en) | Earthen ruins drilling equipment | |
| CN219864876U (en) | Building construction drilling appurtenance | |
| CN217345329U (en) | Tool for taking out valve of grouting pump | |
| CN220504944U (en) | Jet grouting pile drilling equipment with variable pile hole diameter | |
| CN213838870U (en) | Slurry pump aligning pull rod | |
| CN214463917U (en) | Rotary drilling bit with self-discharging silt function | |
| CN217400901U (en) | Cutter head face expanding and digging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |