CN110936180B - Base mechanism of large-span machine tool - Google Patents

Base mechanism of large-span machine tool Download PDF

Info

Publication number
CN110936180B
CN110936180B CN201911387897.7A CN201911387897A CN110936180B CN 110936180 B CN110936180 B CN 110936180B CN 201911387897 A CN201911387897 A CN 201911387897A CN 110936180 B CN110936180 B CN 110936180B
Authority
CN
China
Prior art keywords
plate
sleeve
fixed
guide
base
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
CN201911387897.7A
Other languages
Chinese (zh)
Other versions
CN110936180A (en
Inventor
曹志明
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.)
Sanmen Yaofan Automation Technology Co ltd
Original Assignee
Sanmen Yaofan Automation 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 Sanmen Yaofan Automation Technology Co ltd filed Critical Sanmen Yaofan Automation Technology Co ltd
Priority to CN201911387897.7A priority Critical patent/CN110936180B/en
Publication of CN110936180A publication Critical patent/CN110936180A/en
Application granted granted Critical
Publication of CN110936180B publication Critical patent/CN110936180B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/01Frames, beds, pillars or like members; Arrangement of ways
    • B23Q1/015Frames, beds, pillars

Abstract

The invention discloses a base mechanism of a large-span machine tool, which comprises a base, wherein buffering leg mechanisms are respectively arranged at the front part and the rear part of the left side and the right side of the bottom surface of a bottom plate of the base; an upper main support frame is fixed on the top surface of the middle of a bottom plate of the base, a lifting servo motor is fixed on the top surface of a top plate of the upper main support frame, an output shaft of the lifting servo motor penetrates through the bottom surface of the top plate of the upper support frame and is connected with a vertical adjusting threaded sleeve through a coupler, a vertical stud is screwed in the vertical adjusting threaded sleeve, a lower connecting plate is fixed at the bottom end of the vertical stud, the lower connecting plate is located below the bottom plate of the base, and a bottom fixing plate is fixed on the bottom surface of the lower connecting plate. The four buffering supporting leg mechanisms and the bottom fixing plate are adopted to play a supporting role and a buffering effect, so that the vibration of the machine tool in operation is reduced, and the processing effect is ensured.

Description

Base mechanism of large-span machine tool
Technical Field
The invention relates to the technical field of machine tool equipment, in particular to a base mechanism of a large-span machine tool.
Background
The base of current large-span lathe generally sets up a plurality of landing legs in the bottom, and its landing leg only has the supporting effect, when the lathe operation, can produce a large amount of vibrations, the noise of greatly increased processing, the effect is not ideal.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a base mechanism of a large-span machine tool, which adopts four buffering leg mechanisms and a bottom fixing plate to play a role in supporting and buffering, reduces the vibration of the machine tool in operation and ensures the processing effect.
The scheme for solving the technical problems is as follows:
a base mechanism of a large-span machine tool comprises a base, wherein buffering leg mechanisms are respectively arranged at the front part and the rear part of the left side and the right side of the bottom surface of a bottom plate of the base;
an upper main support frame is fixed on the top surface of the middle of a bottom plate of the base, a lifting servo motor is fixed on the top surface of a top plate of the upper main support frame, an output shaft of the lifting servo motor penetrates through the bottom surface of the top plate of the upper support frame and is connected with a vertical adjusting threaded sleeve through a coupler, a vertical stud is screwed in the vertical adjusting threaded sleeve, a lower connecting plate is fixed at the bottom end of the vertical stud, the lower connecting plate is located below the bottom plate of the base, and a bottom fixing plate is fixed on the bottom surface of the lower connecting plate.
And a bottom anti-skid friction pad is fixed on the bottom surface of the bottom fixing plate.
The top surface of lower connecting plate is fixed with a plurality of vertical guide sleeve, and the bottom surface of the bottom plate of base is fixed with a plurality of guide bars, and the guide bar plug bush is in the vertical guide sleeve that corresponds.
The vertical adjusting threaded sleeve is inserted in a through hole formed in the middle of the bottom plate of the base.
The lubricating guide sleeve is sleeved in the through hole, the outer side wall of the lubricating guide sleeve is pressed on the inner side wall of the through hole, a radial extending edge is formed on the outer side wall of the lower end of the lubricating guide sleeve and fixedly connected to the bottom surface of the bottom plate of the base through a bolt, the vertical adjusting threaded sleeve is sleeved in the lubricating guide sleeve in an inserting mode, and the outer side wall of the vertical adjusting threaded sleeve is tightly attached to the inner side wall of the lubricating guide sleeve.
The vertical adjusting threaded sleeve is inserted and sleeved with a buffer spring, the bottom end of the buffer spring is forced on the top surface of the lower connecting plate, and the top surface of the buffer spring is pressed against the bottom surface of the radial extending edge.
The buffering leg mechanism comprises an upper guide sleeve body, the top end of the upper guide sleeve body is fixed on the bottom surface of the bottom plate of the base, the bottom surface of the upper guide sleeve body is provided with a rotating sleeve, the bottom surface of the rotating sleeve is provided with a lower supporting guide sleeve, a supporting screw adjusting plug bush is arranged in the upper guide sleeve body, the rotating sleeve and the lower supporting guide sleeve, the lower supporting guide sleeve is fixed on the bottom plate of the base, the bottom end of the supporting screw adjusting plug bush extends out of the lower supporting guide sleeve and is fixed with a horizontal supporting plate, and the bottom surface of the horizontal supporting.
And an elastic antiskid plate is fixed on the bottom surface of the lower supporting block.
The top surface shaping of rotating the cover has an annular boss, and the bottom surface shaping of rotating the cover has lower annular boss, goes up annular boss plug bush in the annular groove that the bottom surface shaping of the last guide sleeve body had, and lower annular boss plug bush supports the annular groove that the top surface of guide sleeve has under in, and on the bottom surface of the upper guide sleeve body was hugged closely to the top surface of rotating the cover, the top surface of lower support guide sleeve was hugged closely to the bottom surface of rotating the cover.
The lower part of the lower support guide sleeve is provided with an extending edge, a plurality of fixed sleeve bodies are fixed on the outer side wall of the extending edge, a plurality of main guide rods are fixed at the front part and the rear part of the left side and the right side of the bottom surface of the base, the lower parts of the main guide rods are inserted into the corresponding fixed sleeve bodies, and the bottom plates of the fixed sleeve bodies are fixed on the bottom surfaces of the main guide rods.
The invention has the following outstanding effects: it adopts four buffering landing leg mechanisms and bottom fixed plate to play supporting role and cushioning effect, reduces the vibration of lathe operation, guarantees the processing effect.
Drawings
FIG. 1 is a schematic view of a partial structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is an enlarged fragmentary view of another portion of FIG. 1;
fig. 4 is a partial bottom view of the bottom plate of the base.
Detailed Description
In an embodiment, as shown in fig. 1 to 4, a base mechanism of a large-span machine tool includes a base 10, and buffering leg mechanisms 20 are mounted at the front and the rear of the left and right sides of the bottom surface of a bottom plate of the base 10;
an upper main support frame 11 is fixed on the top surface of the middle of a bottom plate of the base 10, a lifting servo motor 12 is fixed on the top surface of a top plate of the upper main support frame 11, an output shaft of the lifting servo motor 12 penetrates through the bottom surface of the top plate of the upper support frame 11 and is connected with a vertical adjusting threaded sleeve 13 through a coupler, a vertical stud 14 is screwed in the vertical adjusting threaded sleeve 13, a lower connecting plate 15 is fixed at the bottom end of the vertical stud 14, the lower connecting plate 15 is located below the bottom plate of the base 10, and a bottom fixing plate 16 is fixed on the bottom surface of the lower connecting plate 15.
Further, a bottom anti-skid friction pad 17 is fixed to the bottom surface of the bottom fixing plate 16.
Further, a plurality of vertical guide sleeves 151 are fixed on the top surface of the lower connecting plate 15, a plurality of guide rods 152 are fixed on the bottom surface of the bottom plate of the base 10, and the guide rods 152 are inserted into the corresponding vertical guide sleeves 151.
Further, the vertical adjustment screw 13 is inserted into a through hole 18 formed in the middle of the bottom plate of the base 10.
Furthermore, a lubricating guide sleeve 181 is inserted into the through hole 18, the outer side wall of the lubricating guide sleeve 181 is pressed against the inner side wall of the through hole 18, a radially extending edge 182 is formed on the outer side wall of the lower end of the lubricating guide sleeve 181, the radially extending edge 182 is fixedly connected to the bottom surface of the bottom plate of the base 10 through a bolt, the vertical adjusting screw sleeve 13 is inserted into the lubricating guide sleeve 181, and the outer side wall of the vertical adjusting screw sleeve 13 is tightly attached to the inner side wall of the lubricating guide sleeve 181.
Further, the vertical adjusting screw 13 is inserted with the buffer spring 1, the bottom end of the buffer spring 1 is forced on the top surface of the lower connecting plate 15, and the top surface of the buffer spring 1 is pressed against the bottom surface of the radially extending edge 182.
Further, the buffering leg mechanism 20 includes the upper guide sleeve body 21, the top end of the upper guide sleeve body 21 is fixed on the bottom surface of the bottom plate of the base 10, the bottom surface of the upper guide sleeve body 21 is provided with the rotating sleeve 22, the bottom surface of the rotating sleeve 22 is provided with the lower support guide sleeve 23, the adjusting support screw 24 is inserted in the upper guide sleeve body 21, the rotating sleeve 22 and the lower support guide sleeve 23, the lower support guide sleeve 23 is fixed on the bottom plate of the base 10, the bottom end of the adjusting support screw 24 extends out of the lower support guide sleeve 23 and is fixed with the horizontal support plate 25, and the bottom surface of the horizontal support plate 25 is fixed with the lower support block. The lower part of the adjusting support screw 24 is inserted with a spring, the bottom end of which is forced on the horizontal support plate 25, and the upper end of which is forced on the bottom surface of the lower support guide sleeve 23.
Further, a resilient anti-slip plate 27 is fixed to the bottom surface of the lower support block 26.
Further, an upper annular protrusion 221 is formed on the top surface of the rotating sleeve 22, a lower annular protrusion 222 is formed on the bottom surface of the rotating sleeve 22, the upper annular protrusion 221 is inserted into an annular groove formed on the bottom surface of the upper guide sleeve body 21, the lower annular protrusion 222 is inserted into an annular groove formed on the top surface of the lower support guide sleeve 23, the top surface of the rotating sleeve 22 is tightly attached to the bottom surface of the upper guide sleeve body 21, and the bottom surface of the rotating sleeve 22 is tightly attached to the top surface of the lower support guide sleeve 23.
Further, an extension side is formed on the outer side wall of the lower portion of the lower support guide sleeve 23, a plurality of fixing sleeve bodies 231 are fixed on the outer side wall of the extension side, a plurality of main guide rods 19 are fixed on the front portion and the rear portion of the left side and the right side of the bottom surface of the base plate of the base 10, the lower portions of the main guide rods 19 are inserted into the corresponding fixing sleeve bodies 231, and the bottom plates of the fixing sleeve bodies 231 are fixed on the bottom surfaces of the main guide rods 19.
Further, a plurality of lower vertical guide rods 251 are fixed on the top surface of the horizontal support plate 25, the lower vertical guide rods 251 are inserted into guide through holes formed on the extending edge of the lower support guide sleeve 23, a lubricating sleeve 252 is fixed on the inner side wall of each guide through hole, the lower vertical guide rods 251 are inserted into the lubricating sleeve 252, and the outer side walls of the lower vertical guide rods 251 are tightly attached to the inner side wall of the lubricating sleeve 252.
The working principle is as follows: during the use, do not realize rotating at vertical regulation swivel nut 13 through the operation of lift servo motor 12 to realize bottom fixed plate 16 and go up and down, make bottom anti-skidding friction pad 17 press subaerial, guarantee the middle part and support, then, rotate the cover 22 through manual rotation, realize that bottom sprag 26 descends, make the fixed elastic anti-skidding plate 27 in its bottom surface press subaerial, realize supporting, it adjusts conveniently, effectual.
The above embodiments are only for illustrating the invention and are not to be construed as limiting the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, therefore, all equivalent technical solutions also belong to the scope of the invention, and the scope of the invention is defined by the claims.

Claims (1)

1. A base mechanism of large-span lathe, includes base (10), its characterized in that: the front part and the rear part of the left side and the right side of the bottom surface of the bottom plate of the base (10) are respectively provided with a buffering leg mechanism (20);
an upper main support frame (11) is fixed on the top surface of the middle of a bottom plate of the base (10), a lifting servo motor (12) is fixed on the top surface of a top plate of the upper main support frame (11), an output shaft of the lifting servo motor (12) penetrates through the bottom surface of the top plate of the upper support frame (11) and is connected with a vertical adjusting threaded sleeve (13) through a coupler, a vertical stud (14) is screwed in the vertical adjusting threaded sleeve (13), a lower connecting plate (15) is fixed at the bottom end of the vertical stud (14), the lower connecting plate (15) is located below the bottom plate of the base (10), and a bottom fixing plate (16) is fixed on the bottom surface of the lower connecting plate (15);
a bottom anti-skid friction pad (17) is fixed on the bottom surface of the bottom fixing plate (16);
a plurality of vertical guide sleeves (151) are fixed on the top surface of the lower connecting plate (15), a plurality of guide rods (152) are fixed on the bottom surface of the bottom plate of the base (10), and the guide rods (152) are inserted in the corresponding vertical guide sleeves (151);
the vertical adjusting screw sleeve (13) is inserted in a through hole (18) formed in the middle of the bottom plate of the base (10);
a lubricating guide sleeve (181) is inserted into the through hole (18), the outer side wall of the lubricating guide sleeve (181) is pressed against the inner side wall of the through hole (18), a radially extending edge (182) is formed on the outer side wall of the lower end of the lubricating guide sleeve (181), the radially extending edge (182) is fixedly connected to the bottom surface of the bottom plate of the base (10) through a bolt, a vertical adjusting threaded sleeve (13) is inserted into the lubricating guide sleeve (181), and the outer side wall of the vertical adjusting threaded sleeve (13) is tightly attached to the inner side wall of the lubricating guide sleeve (181);
the vertical adjusting threaded sleeve (13) is inserted and sleeved with a buffer spring (1), the bottom end of the buffer spring (1) is stressed on the top surface of the lower connecting plate (15), and the top surface of the buffer spring (1) is pressed against the bottom surface of the radial extending edge (182);
the buffer support leg mechanism (20) comprises an upper guide sleeve body (21), the top end of the upper guide sleeve body (21) is fixed on the bottom surface of the bottom plate of the base (10), the bottom surface of the upper guide sleeve body (21) is provided with a rotating sleeve (22), the bottom surface of the rotating sleeve (22) is provided with a lower support guide sleeve (23), an adjusting support screw rod (24) is inserted and sleeved in the upper guide sleeve body (21), the rotating sleeve (22) and the lower support guide sleeve (23), the lower support guide sleeve (23) is fixed on the bottom plate of the base (10), the bottom end of the adjusting support screw rod (24) extends out of the lower support guide sleeve (23) and is fixed with a horizontal support plate (25), and the bottom surface of the horizontal support plate (25) is fixed with;
an elastic anti-skid plate (27) is fixed on the bottom surface of the lower supporting block (26);
an upper annular bulge (221) is formed on the top surface of the rotating sleeve (22), a lower annular bulge (222) is formed on the bottom surface of the rotating sleeve (22), the upper annular bulge (221) is inserted in an annular groove formed on the bottom surface of the upper guide sleeve body (21), the lower annular bulge (222) is inserted in an annular groove formed on the top surface of the lower support guide sleeve (23), the top surface of the rotating sleeve (22) is tightly attached to the bottom surface of the upper guide sleeve body (21), and the bottom surface of the rotating sleeve (22) is tightly attached to the top surface of the lower support guide sleeve (23);
an extension edge is formed on the outer side wall of the lower part of the lower support guide sleeve (23), a plurality of fixed sleeve bodies (231) are fixed on the outer side wall of the extension edge, a plurality of main guide rods (19) are fixed on the front part and the rear part of the left side and the right side of the bottom surface of the base (10), the lower parts of the main guide rods (19) are inserted and sleeved in the corresponding fixed sleeve bodies (231), and the bottom plates of the fixed sleeve bodies (231) are fixed on the bottom surfaces of the main guide rods (19);
a plurality of lower vertical guide rods (251) are fixed on the top surface of the horizontal support plate (25), the lower vertical guide rods (251) are inserted in guide through holes formed in the extending edges of the lower support guide sleeve (23), a lubricating sleeve (252) is fixed on the inner side wall of each guide through hole, the lower vertical guide rods (251) are inserted in the lubricating sleeve (252), and the outer side walls of the lower vertical guide rods (251) are tightly attached to the inner side wall of the lubricating sleeve (252);
realize rotating at vertical regulation swivel nut (13) through lift servo motor (12) operation to realize bottom fixed plate (16) and go up and down, make bottom anti-skidding friction pad (17) press subaerial, guarantee the middle part and support, then, rotate cover (22) through manual rotation, realize that bottom sprag (26) descend, make the fixed elastic anti-skidding board (27) of its bottom surface press subaerial, realize supporting.
CN201911387897.7A 2019-12-30 2019-12-30 Base mechanism of large-span machine tool Active CN110936180B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911387897.7A CN110936180B (en) 2019-12-30 2019-12-30 Base mechanism of large-span machine tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911387897.7A CN110936180B (en) 2019-12-30 2019-12-30 Base mechanism of large-span machine tool

Publications (2)

Publication Number Publication Date
CN110936180A CN110936180A (en) 2020-03-31
CN110936180B true CN110936180B (en) 2021-06-04

Family

ID=69912418

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911387897.7A Active CN110936180B (en) 2019-12-30 2019-12-30 Base mechanism of large-span machine tool

Country Status (1)

Country Link
CN (1) CN110936180B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111661600A (en) * 2020-07-03 2020-09-15 台州路桥城歌机械有限公司 Household electrical appliances production line is with transport conveying plate mechanism
CN112108870A (en) * 2020-09-25 2020-12-22 大庆安翔汽车零部件有限公司 Rapid and efficient automatic assembling method for tire hub

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205950273U (en) * 2016-07-22 2017-02-15 陈江波 Liftable i -shaped machine tool who adjusts
CN206998282U (en) * 2017-07-14 2018-02-13 浙江小米实业有限公司 A kind of large-size numerical control machine support meanss
CN207593249U (en) * 2017-12-05 2018-07-10 浙江博文工程机械配件有限公司 A kind of high precision cutting tools seat lifting platform of milling machine
CN207627572U (en) * 2017-06-16 2018-07-20 瑞多(上海)智能科技有限公司 A kind of leg assembly of massage armchair
CN108389486A (en) * 2018-03-20 2018-08-10 许淳博 A kind of high school physics wave optics demonstrator
CN109519796A (en) * 2019-01-07 2019-03-26 广东雅的亮彩灯饰有限公司 A kind of LED line wall lamp
CN209430962U (en) * 2018-12-29 2019-09-24 湖南现代物流职业技术学院 The damping firm banking of electromechanical equipment
CN209491737U (en) * 2018-12-28 2019-10-15 青岛海之杰科技设备有限公司 A kind of EMU damper workbench lifting support

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10110775A (en) * 1996-10-02 1998-04-28 Amada Co Ltd Method for equipping industrial machine leg part with vibration control device, and industrial machine equipped with vibration control device in that method
CN205464428U (en) * 2016-01-20 2016-08-17 浙江冠杰科技有限公司 Bench drill is used in production of over -and -under type mould with mirror layer
CN107933663A (en) * 2017-12-22 2018-04-20 佛山迅奥捷自动化科技有限公司 A kind of automotive hub carrier with automatic lifting

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205950273U (en) * 2016-07-22 2017-02-15 陈江波 Liftable i -shaped machine tool who adjusts
CN207627572U (en) * 2017-06-16 2018-07-20 瑞多(上海)智能科技有限公司 A kind of leg assembly of massage armchair
CN206998282U (en) * 2017-07-14 2018-02-13 浙江小米实业有限公司 A kind of large-size numerical control machine support meanss
CN207593249U (en) * 2017-12-05 2018-07-10 浙江博文工程机械配件有限公司 A kind of high precision cutting tools seat lifting platform of milling machine
CN108389486A (en) * 2018-03-20 2018-08-10 许淳博 A kind of high school physics wave optics demonstrator
CN209491737U (en) * 2018-12-28 2019-10-15 青岛海之杰科技设备有限公司 A kind of EMU damper workbench lifting support
CN209430962U (en) * 2018-12-29 2019-09-24 湖南现代物流职业技术学院 The damping firm banking of electromechanical equipment
CN109519796A (en) * 2019-01-07 2019-03-26 广东雅的亮彩灯饰有限公司 A kind of LED line wall lamp

Also Published As

Publication number Publication date
CN110936180A (en) 2020-03-31

Similar Documents

Publication Publication Date Title
CN110936180B (en) Base mechanism of large-span machine tool
CN205571981U (en) Liftable clamping device
CN204657879U (en) Box bearing pressing machine
CN106271686B (en) A kind of numerically-controlled machine tool that can steadily lift
CN210178829U (en) Textile machinery supporting device
CN108799721B (en) Equipment mounting base for hardware electromechanics
CN203554173U (en) General generator motor support shock absorbing seat
CN204127034U (en) Cylinder bracket
CN206933733U (en) A kind of adjustable desk of height of table top
CN210676551U (en) Press bearing seat end face machining device
CN110788886A (en) Industrial robot vibration damping mount
CN208729165U (en) A kind of lathe damping base
CN203034230U (en) Sewing machine multifunctional foot stool device
CN206702019U (en) A kind of drawing and forming mechanism of car tooth form clutch hub body with buffer gear
CN207057698U (en) Adjustment type milling material machine
CN205968207U (en) Machine tool set -up base
CN210147595U (en) Novel high-speed machine
CN205043224U (en) Horizontal engraving and milling machine
CN109058670A (en) A kind of electromechanical equipment mounting structure with isolation decrease of noise functions
CN203735453U (en) Tobacco pressing foot plate of tobacco leaf stringing machine
CN214736457U (en) Prevent torsional deformation computerized flat knitting machine bearing structure
CN212986620U (en) Supporting device of textile machinery
CN211890707U (en) Multidirectional cylindrical part supporting platform of adjusting
CN203554129U (en) Universal generator one-legged motor bracket
CN211276162U (en) Mechanical die for punch press

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