CN218817900U - Vertical speed reducing mechanism - Google Patents

Vertical speed reducing mechanism Download PDF

Info

Publication number
CN218817900U
CN218817900U CN202223222095.0U CN202223222095U CN218817900U CN 218817900 U CN218817900 U CN 218817900U CN 202223222095 U CN202223222095 U CN 202223222095U CN 218817900 U CN218817900 U CN 218817900U
Authority
CN
China
Prior art keywords
shaft
wheel
rotation
shell
power
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
Application number
CN202223222095.0U
Other languages
Chinese (zh)
Inventor
张树森
张建中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Faston Power Technology Co ltd
Original Assignee
Suzhou Faston Power Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suzhou Faston Power Technology Co ltd filed Critical Suzhou Faston Power Technology Co ltd
Priority to CN202223222095.0U priority Critical patent/CN218817900U/en
Application granted granted Critical
Publication of CN218817900U publication Critical patent/CN218817900U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Landscapes

  • Retarders (AREA)

Abstract

The utility model relates to the technical field of mechanical equipment, a perpendicular reduction gears is disclosed, which comprises an outer shell, the fixed top case that is provided with in shell up end one side, shell one side embedding is provided with sealed piece. The utility model discloses in, through pivot drive axis of rotation, because the pivot is the eccentric shaft for the axle center of axis of rotation, consequently the axis of rotation will be driven along with the rotation of pivot and carry out eccentric revolution, and because the axis of rotation outside is fixed with interior wheel, thereby it revolves to drive interior wheel, and then drive a roll shaft in the outside, make a roll shaft skew contact be located No. two roll shafts, make No. two roll shafts and No. one roll shaft produce relative slip, thereby make the rotational speed of its foreign steamer reduce, accomplish the rotation that slows down, and interlock each other between the contact surface of No. two roll shafts and a roll shaft, borrow this and can exert very stable transmission benefit, be difficult to maintain the correct transmission of each component because of the occlusal surface is little or the interlock department is inhomogeneous.

Description

Vertical speed reducing mechanism
Technical Field
The utility model relates to the technical field of mechanical equipment, especially, relate to a perpendicular reduction gears.
Background
The prior patent (publication number: CN 202251682U) discloses a vertical transmission planetary gear reducer, which comprises an input shaft and an output shaft, wherein the output shaft is provided with a spline, a pair of spiral bevel gears which are vertically meshed with each other for transmission are respectively arranged on the input shaft and the output shaft, the input shaft and the output shaft are arranged on a case of the reducer at an angle of 90 degrees, and the spiral bevel gears and the input shaft and/or the output shaft are of an integrated structure. Compared with the prior art, the reducer can be axially shorter, and is suitable for being used in a special narrow space.
The inventor finds that the prior art has the following problems in the process of realizing the utility model: 1. the reduction mechanism which depends on increasing the number of teeth occupies a larger space, and the strength requirement on each part in the transmission process is higher; 2. because the two spiral bevel gears are identical in size, when power is output, the two spiral bevel gears are vertically meshed, the rotating speed is constant, and only one horizontal output shaft is provided, so that power output is needed in the vertical direction, another group of motor speed reducers are needed, the use cost is high, and the occupied space is large.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the perpendicular speed reduction mechanism who proposes, through pivot drive axis of rotation, because the pivot is the eccentric shaft for the axle center of axis of rotation, consequently the axis of rotation will be driven along with the rotation of pivot and carry out eccentric revolution, and because the axis of rotation outside is fixed with interior wheel, thereby it revolves in the drive, and then drive a roll axis in the outside, make a roll axis skew contact be located No. two roll axes, make No. two roll axes and a roll axis produce relative slip, thereby make the rotational speed of its foreign steamer reduce, accomplish the rotation that slows down, and interlock each other between the contact surface of No. two roll axes and a roll axis, borrow this can exert very stable transmission benefit, be difficult to because of the interlock is little or the inhomogeneous and be difficult to maintain the correct transmission of each component in interlock department.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a vertical speed reducing mechanism comprises a shell, wherein a top box is fixedly arranged on one side of the upper end face of the shell, a sealing block is embedded in one side of the shell, a fixed disc is fixedly arranged on one side of the sealing block, a power mechanism penetrates through the midpoint of one side of the fixed disc, a second output shaft is rotatably arranged at the midpoint of the other side of the shell through a bearing seat, one end of the power mechanism penetrates through the sealing block and is fixedly provided with a turntable, a plurality of connecting rods are uniformly arranged on one side, away from the power mechanism, of the turntable, a rotating block is fixedly sleeved with the connecting rods, and a limiting seat is rotatably arranged on the outer side of the rotating block;
the second output shaft is fixedly connected with the rotating block, a second bevel gear is fixedly sleeved on one side, close to the rotating block, of the outer side of the second output shaft, a rotating shaft is rotatably arranged on the upper end face of the shell through a bearing seat, the lower end of the rotating shaft penetrates through the shell, a first bevel gear is fixedly sleeved on the outer side shaft body, a speed reducing mechanism is fixedly arranged on the upper end face of the rotating shaft, and a first output shaft is fixedly arranged at the midpoint of the upper end face of the speed reducing mechanism;
through above-mentioned technical scheme, power unit has external power equipment to carry out power take off, carries out preliminary speed reduction back by inside sun gear, planet wheel to drive the second output shaft by carousel and connecting rod and rotate, and be connected by a bevel gear and No. two bevel gear meshing between second output shaft and the pivot, thereby drive the pivot and rotate, and be connected between the first output shaft of vertical direction and the pivot, thereby accomplish the first output shaft rotation of vertical direction.
Furthermore, the power mechanism comprises a power shaft, a sun gear is fixedly sleeved at the output end of the power shaft, and a planet gear is connected to the outer side of the sun gear in a meshing manner;
through the technical scheme, preliminary speed reduction is favorably carried out on the output power, and the speed reduction effect in the horizontal direction is completed.
Furthermore, the speed reducing mechanism comprises an outer wheel and an inner wheel, a rotating shaft is rotatably arranged at the midpoint of the upper end surface of the inner wheel through an inner bearing, a plurality of first rolling shafts are uniformly arranged on the outer surface of the inner wheel, a plurality of second rolling shafts are uniformly arranged on the inner surface of the outer wheel, and a top plate is fixedly arranged on the upper end surface of the outer wheel;
through the technical scheme, the rotating shaft drives the rotating shaft, and because the rotating shaft is an eccentric shaft relative to the axis of the rotating shaft, the rotating shaft is driven to perform eccentric revolution along with the rotation of the rotating shaft, and because the outer side of the rotating shaft is fixedly provided with the inner wheel, the inner wheel is driven to revolve, and then the first rolling shaft on the outer side is driven, so that the first rolling shaft is in offset contact with the second rolling shaft, the second rolling shaft and the first rolling shaft are enabled to generate relative sliding, the rotating speed of the outer wheel is reduced, and the speed reduction and rotation are completed.
Furthermore, the rotating shaft is fixedly arranged on the lower end face of the speed reducing mechanism and is eccentric to the center of the middle shaft, and the first bevel gear is meshed with the second bevel gear;
through the technical scheme, when the power mechanism drives the second output shaft, the second output shaft is connected with the second bevel gear in a meshed mode through the first bevel gear and the second bevel gear, and therefore the rotation of the rotating shaft is completed.
Furthermore, the outer wheel is movably sleeved outside the inner wheel, the first rolling shafts and the second rolling shafts are uniformly arranged in an outer ring shape, and the number of the second rolling shafts is always larger than that of the first rolling shafts;
through above-mentioned technical scheme, because interior wheel under the eccentric pivot drive of lower extreme, make interior wheel carry out eccentric rotation, and because interior wheel diameter is less than the foreign steamer and a rolling shaft quantity is less than No. two rolling shafts for interior wheel need than the foreign steamer many turns the round revolution with the outside foreign steamer, thereby accomplish the rotation slowing down of foreign steamer.
Furthermore, the rotating block, the sun wheel and the planet wheel are all rotatably sleeved in the limiting seat, and the power shaft is externally connected with power equipment;
through above-mentioned technical scheme, be favorable to providing fixed and pivoted drive place for turning block, sun gear and planet wheel, guarantee its high efficiency and steady rotation.
Furthermore, the rotating shaft vertically corresponds to the second output shaft from top to bottom, and the first output shaft is rotatably arranged at the midpoint of the upper end surface of the top box;
through the technical scheme, the rotating shaft and the second output shaft are vertically arranged and are meshed and connected through the bevel gears, the rotation of the first output shaft in the vertical direction is completed, so that the two-way driving in the parallel direction and the vertical direction can be simultaneously carried out, and the different rotating speeds in the two directions are output.
The utility model discloses following beneficial effect has:
1. the utility model provides a pair of vertical reduction mechanism carries out power take off through power unit to by pivot and second output shaft vertical and under bevel gear's meshing is connected, accomplish the rotation of vertical direction's first output shaft, make and to carry out the both-way drive of parallel and vertical direction simultaneously, and the different rotational speed output of two directions, can satisfy the operation requirement of different transmission direction occasions, saved use cost greatly.
2. The utility model provides a vertical reduction mechanism, through pivot drive axis of rotation, because the pivot is the eccentric shaft for the axle center of axis of rotation, consequently the axis of rotation will be driven along with the rotation of pivot and carry out eccentric revolution, and because the axis of rotation outside is fixed with interior wheel, thereby the revolution in the drive, and then drive a roll axis in the outside, make a roll axis skew contact be located No. two roll axes, make No. two roll axes and a roll axis produce relative slip, thereby make the rotational speed of its foreign steamer reduce, accomplish the rotation of slowing down, and interlock each other between the contact surface of No. two roll axes and a roll axis, borrow this and can exert very stable transmission benefit, be difficult to maintain the correct transmission of each component because of the interlock is little or the interlock department is inhomogeneous.
Drawings
Fig. 1 is an axial view of a vertical speed reduction mechanism according to the present invention;
fig. 2 is a schematic front sectional view of a vertical speed reducing mechanism according to the present invention;
FIG. 3 is a partial cross-sectional top view of a vertical reduction gear according to the present invention;
fig. 4 is an enlarged view of the position a of the present invention.
Illustration of the drawings:
1. a power mechanism; 101. a power shaft; 102. a sun gear; 103. a planet wheel; 2. fixing the disc; 3. a housing; 4. a first output shaft; 5. a top box; 6. a second output shaft; 7. a speed reduction mechanism; 701. an outer wheel; 702. a first rolling shaft; 703. a second rolling axis; 704. a rotating shaft; 705. an inner bearing; 706. an inner wheel; 707. a top plate; 8. a bearing seat; 9. a rotating shaft; 10. a first bevel gear; 11. a second bevel gear; 12. rotating the block; 13. a connecting rod; 14. a limiting seat; 15. a turntable; 16. and (6) sealing the block.
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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
Referring to fig. 1-4, the present invention provides an embodiment: a vertical speed reducing mechanism comprises a shell 3, a top box 5 is fixedly arranged on one side of the upper end face of the shell 3, a sealing block 16 is embedded into one side of the shell 3 to form a sealing space inside the shell, leakage of internal machine liquid is avoided, a fixed disc 2 is fixedly arranged on one side of the sealing block 16, a power mechanism 1 is arranged at the midpoint of one side of the fixed disc 2 in a penetrating mode, a second output shaft 6 is arranged at the midpoint of the other side of the shell 3 in a rotating mode through a bearing seat 8, the second output shaft 6 is an output shaft in the horizontal direction and provides horizontal output power, one end of the power mechanism 1 penetrates through the sealing block 16 and is fixedly provided with a rotating disc 15, a plurality of connecting rods 13 are uniformly arranged on one side, away from the power mechanism 1, the rotating disc 15 is fixedly sleeved with a rotating block 12, and a limiting seat 14 is rotatably arranged on the outer side of the rotating block 12;
second output shaft 6 and turning block 12 fixed connection and the outside is close to the fixed cover of one side of turning block 12 and is equipped with No. two bevel gear 11, the up end of shell 3 rotates through bearing frame 8 and is provided with pivot 9, the lower extreme of pivot 9 runs through shell 3 and the fixed cover of outer side axle body is equipped with bevel gear 10 No. one, the fixed reduction gears 7 that are provided with of pivot 9 up end, the fixed first output shaft 4 that is provided with of reduction gears 7 up end midpoint department, first output shaft 4 accomplishes the speed reduction through reduction gears 7 to provide vertical power take off.
Power unit 1 includes power shaft 101, the fixed cover of power shaft 101 output is equipped with sun gear 102, the meshing is connected with planet wheel 103 in the sun gear 102 outside, sun gear 102 removes when meshing with planet wheel 103, can not produce very big exciting force, vibration and noise phenomenon can improve, the tooth root warp with cracked probability with greatly reduced, adopt the integral type processing to sun gear and output shaft simultaneously, mechanism's intensity is higher, be favorable to tentatively slowing down the power of output, accomplish the speed reduction effect of horizontal direction.
The speed reducing mechanism 7 comprises an outer wheel 701 and an inner wheel 706, a rotating shaft 704 is rotatably arranged at the middle point of the upper end face of the inner wheel 706 through an inner bearing 705, a plurality of first rolling shafts 702 are uniformly arranged on the outer surface of the inner wheel 706, a plurality of second rolling shafts 703 are uniformly arranged on the inner surface of the outer wheel 701, a top plate 707 is fixedly arranged on the upper end face of the outer wheel 701, the rotating shaft 9 drives the rotating shaft 704, the rotating shaft 704 is driven to eccentrically revolve along with the rotation of the rotating shaft 9 because the rotating shaft 9 is eccentric relative to the axis of the rotating shaft 704, and the inner wheel 706 is fixed on the outer side of the rotating shaft 704 so as to drive the inner wheel 706 to revolve and further drive the first rolling shaft 702 on the outer side, so that the first rolling shaft 702 is in offset contact with the second rolling shaft, the second rolling shaft 703 and the first rolling shaft 702 are caused to relatively slide, the rotating speed of the outer wheel 703 is reduced, and the speed reducing rotation is completed.
The rotating shaft 9 is fixedly arranged on the lower end face of the speed reducing mechanism 7 and is eccentric to the center of the shaft, the first bevel gear 10 is meshed with the second bevel gear 11, and therefore when the power mechanism 1 drives the second output shaft 6, the second output shaft 6 is meshed with the second bevel gear 11 through the first bevel gear 10, and therefore rotation of the rotating shaft 9 is completed. Outer wheel 701 activity cover is located in the interior wheel 706 outside, a plurality of rolling axle 702 and No. two rolling axles 703 all are even outer ring dress and No. two rolling axle 703 quantity is greater than a rolling axle 702 one all the time, because interior wheel 706 is under the eccentric pivot 9 drive of lower extreme, make interior wheel 706 carry out eccentric rotation, and because interior wheel 706 diameter is less than outer wheel 701 and No. two rolling axles 703 of rolling axle 702 quantity, make interior wheel 706 need be more than outer wheel 701 many turns with the round of revolution of outer wheel 701 in the outside, thereby accomplish the rotation slowing down of outer wheel 701.
The turning block 12, the sun gear 102 and the planet gear 103 are all rotatably sleeved in the limiting seat 14, and the power shaft 101 is externally connected with power equipment, so that a fixed and rotating driving place is provided for the turning block 12, the sun gear 102 and the planet gear 103, and efficient and stable rotation of the turning block is guaranteed. The rotating shaft 9 and the second output shaft 6 vertically correspond to each other up and down, the first output shaft 4 is rotatably arranged at the midpoint of the upper end face of the top box 5, the rotating shaft 9 and the second output shaft 6 vertically move up and down and are connected in a meshing manner through the bevel gears to complete the rotation of the first output shaft 4 in the vertical direction, so that the two-way driving in the parallel direction and the vertical direction can be simultaneously carried out, and different rotating speeds in the two directions are output.
The working principle is as follows: during the use, power shaft 101 is connected with power equipment, and power equipment output power drives power shaft 101 and rotates, and power shaft 101 rotates the in-process and drives sun gear 102 and planet wheel 103 and rotate, because sun gear 102 and planet wheel 103 mesh and sun gear 102 need carry out many circles and rotate, accomplishes a round of rotation of planet wheel 103, and then accomplishes first speed reduction, and because second output shaft 6 is driven by power mechanism 1, accomplishes the power take off of horizontal direction. The second output shaft 6 is meshed with the first bevel gear 10 of the rotating shaft 9 through the second bevel gear 11, so as to drive the rotating shaft 9 to rotate, the rotating shaft 9 is connected with the speed reducing mechanism 7 and is positioned at an eccentric shaft position with the center shaft of the speed reducing mechanism 7, so that when the rotating shaft 9 rotates, the inner wheel 706 is driven to eccentrically revolve, and then the first rolling shaft 702 on the outer side is driven, the first rolling shaft 702 is enabled to be in offset contact with the second rolling shaft 703, the second rolling shaft 703 and the first rolling shaft 702 are enabled to relatively slide, so that the rotating speed of the outer wheel 701 is reduced, and the speed reduction and rotation are completed.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (7)

1. A vertical reduction mechanism comprising a housing (3), characterized in that: a top box (5) is fixedly arranged on one side of the upper end face of the shell (3), a sealing block (16) is embedded into one side of the shell (3), a fixed disc (2) is fixedly arranged on one side of the sealing block (16), a power mechanism (1) penetrates through the middle point of one side of the fixed disc (2), a second output shaft (6) is rotatably arranged at the middle point of the other side of the shell (3) through a bearing seat (8), one end of the power mechanism (1) penetrates through the sealing block (16) and is fixedly provided with a rotary disc (15), a plurality of connecting rods (13) are uniformly arranged on one side, away from the power mechanism (1), of the rotary disc (15), a rotating block (12) is fixedly connected with the connecting rods (13), and a limiting seat (14) is rotatably arranged on the outer side of the rotating block (12);
second output shaft (6) and turning block (12) fixed connection and the fixed cover in one side that the outside is close to turning block (12) are equipped with No. two bevel gear (11), shell (3) up end is rotated through bearing frame (8) and is provided with pivot (9), pivot (9) lower extreme runs through shell (3) and outside axle and fixes the cover on one's body and be equipped with bevel gear (10) No. one, pivot (9) up end is fixed and is provided with reduction gears (7), reduction gears (7) up end midpoint department is fixed and is provided with first output shaft (4).
2. A vertical deceleration mechanism according to claim 1, wherein: the power mechanism (1) comprises a power shaft (101), a sun wheel (102) is fixedly sleeved at the output end of the power shaft (101), and a planet wheel (103) is connected to the outer side of the sun wheel (102) in a meshing manner.
3. A vertical deceleration mechanism according to claim 1, wherein: the speed reducing mechanism (7) comprises an outer wheel (701) and an inner wheel (706), a rotating shaft (704) is rotatably arranged at the middle point of the upper end face of the inner wheel (706) through an inner bearing (705), a plurality of first rolling shafts (702) are uniformly arranged on the outer surface of the inner wheel (706), a plurality of second rolling shafts (703) are uniformly arranged on the inner surface of the outer wheel (701), and a top plate (707) is fixedly arranged on the upper end face of the outer wheel (701).
4. A vertical deceleration mechanism according to claim 1, wherein: the rotating shaft (9) is fixedly arranged on the lower end face of the speed reducing mechanism (7) and is eccentric to the center of the middle shaft, and the first bevel gear (10) is meshed with the second bevel gear (11).
5. A vertical reduction mechanism according to claim 3, wherein: the outer wheel (701) is movably sleeved on the outer side of the inner wheel (706), the first rolling shafts (702) and the second rolling shafts (703) are uniformly arranged in an outer ring mode, and the number of the second rolling shafts (703) is always larger than that of the first rolling shafts (702).
6. A vertical deceleration mechanism according to claim 1 or 2, wherein: the rotating block (12), the sun gear (102) and the planet gear (103) are all rotatably sleeved in the limiting seat (14), and a power device is externally connected to the power shaft (101).
7. A vertical deceleration mechanism according to claim 1, wherein: the rotating shaft (9) vertically corresponds to the second output shaft (6) up and down, and the first output shaft (4) is rotatably arranged at the midpoint of the upper end face of the top box (5).
CN202223222095.0U 2022-12-02 2022-12-02 Vertical speed reducing mechanism Active CN218817900U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223222095.0U CN218817900U (en) 2022-12-02 2022-12-02 Vertical speed reducing mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223222095.0U CN218817900U (en) 2022-12-02 2022-12-02 Vertical speed reducing mechanism

Publications (1)

Publication Number Publication Date
CN218817900U true CN218817900U (en) 2023-04-07

Family

ID=87264520

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202223222095.0U Active CN218817900U (en) 2022-12-02 2022-12-02 Vertical speed reducing mechanism

Country Status (1)

Country Link
CN (1) CN218817900U (en)

Similar Documents

Publication Publication Date Title
WO2011160313A1 (en) Universal speed reducer with eccentric engagement pair
CN208858869U (en) A kind of fewer differential teeth planetary line gear retarder
CN205534041U (en) Two -stage harmonic planetary gear reducer
CN108679167A (en) A kind of fewer differential teeth planetary line gear retarder
CN102086580B (en) Washing mode of washing machine, washing machine thereof and speed reduction clutch thereof
CN110091235B (en) Revolution and rotation spherical polishing tool
CN218817900U (en) Vertical speed reducing mechanism
CN107355524A (en) A kind of differential differential speed reducer
CN107237867A (en) A kind of decelerator and method of work
CN201211529Y (en) Rolling mill roll changing carriage
CN206530656U (en) A kind of high-accuracy double-planet reduction box
CN205013619U (en) Robot reduction gear
CN201351712Y (en) Differential type internal-tooth-free planet gear speed reducer
CN208431340U (en) Few teeth difference big retarding compares composite speed reducer
CN207750456U (en) One kind thickens joint of robot drive mechanism
CN110748610B (en) Bearing type cycloidal pin gear speed reducing mechanism
CN204729556U (en) A kind of modified model balance speed reducer
CN110206855B (en) Large-transmission-ratio speed reduction method and device
CN208429533U (en) A kind of balk cargo conveyor using the epicyclic gearbox that thickens
CN207161664U (en) A kind of differential differential speed reducer
CN213839452U (en) Planetary gear reduction box
CN216242073U (en) Large reduction ratio structure based on planetary gear train
CN2221123Y (en) Dual-ring speed reducer
CN214425041U (en) Gear reducer with strip reinforcing ribs
CN110242725A (en) A kind of Mobyneb planetary reducer

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant