CN108971966B - Equipment for assembling electric field device - Google Patents

Equipment for assembling electric field device Download PDF

Info

Publication number
CN108971966B
CN108971966B CN201810501577.9A CN201810501577A CN108971966B CN 108971966 B CN108971966 B CN 108971966B CN 201810501577 A CN201810501577 A CN 201810501577A CN 108971966 B CN108971966 B CN 108971966B
Authority
CN
China
Prior art keywords
rectangular
spacer
hole
rotating shaft
plate
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
CN201810501577.9A
Other languages
Chinese (zh)
Other versions
CN108971966A (en
Inventor
孙健
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.)
Hefei Zhengte Machinery Co Ltd
Original Assignee
Hefei Zhengte Machinery 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 Hefei Zhengte Machinery Co Ltd filed Critical Hefei Zhengte Machinery Co Ltd
Priority to CN201810501577.9A priority Critical patent/CN108971966B/en
Publication of CN108971966A publication Critical patent/CN108971966A/en
Application granted granted Critical
Publication of CN108971966B publication Critical patent/CN108971966B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P21/00Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
    • B23P21/002Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control the units stationary whilst being composed

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The invention discloses equipment for assembling an electric field device, and relates to the technical field of electric field device assembly. The invention relates to a spacer bush feeder, a limiting rotating shaft and an operating platform; the spacer feeder comprises a base; the base is provided with a plurality of layers of spacer sleeve feeding plates; a through hole is formed in one end face of the limiting rotating shaft; one side surface of the operating platform is provided with three rectangular grooves; wherein a bidirectional hydraulic cylinder is fixed in one rectangular groove; two end faces of the bidirectional hydraulic cylinder are fixed with the rectangular sliding block; a motor is fixed on the rectangular sliding block; the through hole is fixedly connected with an output shaft of the motor; both sides of the operation table are fixed with a plurality of layers of spacer sleeve feeding plates. According to the invention, the spacer bush is conveyed into the limiting rotating shaft under the action of the spacer bush feeder, the limiting rotating shaft and the operating platform, then the limiting rotating shaft rotates and moves to a position between each group of partition plates, then the partition plate shaft is inserted, and the nut is screwed on to complete the assembling process.

Description

Equipment for assembling electric field device
Technical Field
The invention belongs to the technical field of electric field device assembly, and particularly relates to equipment for assembling an electric field device.
Background
At present, an electric field device for removing oil smoke in a restaurant is used, and a partition plate, a spacer bush and a partition plate shaft are used; the electric field device assembled by the partition board, the spacer bush and the partition board shaft has the advantages that although the assembling process is simple, the partition board is divided into the cathode board and the anode board, and the cathode board and the anode board are assembled in a cross mode, so that the problems of repeated operation and low efficiency exist in manual assembly.
Aiming at the problems, the invention can convey the spacers into the limiting rotating shaft in an orderly arrangement mode through the effects of the spacer feeder, the limiting rotating shaft and the operating platform, then the limiting rotating shaft rotates and moves to a position between each group of the partition plates, then the partition plate shaft is inserted, and the nut is screwed on, thus completing the semi-automatic assembly process.
Disclosure of Invention
The invention aims to provide equipment for assembling an electric field device, which solves the problems of repeated operation and low efficiency of the existing manual assembly through the functions of a spacer feeder, a limiting rotating shaft and an operating platform.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to equipment for assembling an electric field device, which comprises a spacer bush feeder, a limiting rotating shaft and an operating platform, wherein the spacer bush feeder is arranged on the operating platform;
the spacer feeder comprises a base; the base is provided with a plurality of layers of spacer sleeve feeding plates;
a through hole is formed in one end face of the limiting rotating shaft; a rectangular plate is arrayed on one side of the limiting rotating shaft; a plurality of layers of spacer sleeve limiting grooves are formed in one surface of the rectangular plate; the spacing rotating shaft moves the spacing sleeve in the spacing groove of the spacing sleeve to a designated position through rotation and movement, the designated position is the position of a partition plate on the partition plate mold for placing the spacing sleeve, then the partition plate shaft is inserted, and the nut is screwed on to complete the assembly of the electric field device;
a plurality of fixing plates are fixed on the upper surface of the operating table; wherein, one surface of each of the two fixing plates is provided with an elliptical through hole; three rectangular grooves are formed in one side face of the operating platform; the rectangular grooves on two sides are in sliding fit with rectangular sliding blocks, and the inner surface of the other rectangular groove is fixed with a bidirectional hydraulic cylinder; two end faces of the bidirectional hydraulic cylinder are fixedly connected with the rectangular sliding block; a motor is fixed on the upper surface of the rectangular sliding block;
the fixing plates are used for limiting the movement of the rotating shaft on the output shaft of the motor, so that the stability of the output shaft is improved by the fixing plates on the two sides; the elliptical through hole is used for subtracting a movement obstruction from an output shaft of the motor under the sliding action of the rectangular sliding block; the bidirectional hydraulic cylinder provides sliding power for the rectangular sliding blocks on the two side faces, and the rectangular sliding blocks drive the motor and the limiting rotating shaft to move; the motor provides rotating power for the limiting rotating shaft;
the inner surface of the through hole is fixedly connected with an output shaft of the motor; one opposite side surface of the operating platform is fixedly connected with the plurality of layers of spacer sleeve feeding plates of the base.
Furthermore, a rectangular sliding groove is formed in one surface of the operating platform; the upper surface of the operating platform is provided with a rectangular groove matched with the rectangular sliding groove; the inner surfaces of the rectangular sliding groove and the rectangular groove are matched with a partition plate die in a sliding manner; the rectangular sliding groove is used for placing the partition plate die and manually inserting the partition plate into the partition plate die, and the rectangular sliding groove has the function of simultaneously inserting the partition plate into the partition plate die when semi-automatic assembly is not influenced, so that the assembly is saved, and the assembly efficiency is improved; the rectangular channel is used for placing the baffle mould that has inserted the baffle, and is used for spacing pivot to remove the spacer to the assigned position after for the semicircle of spacer spacing recess one side of spacer and spacing pivot is in concentric state, alright this moment in order to insert the baffle axle.
Further, an output shaft of the motor is in sliding fit with the oval through hole; limiting blocks are arranged on the opposite side surfaces of the fixing plate provided with the elliptical through holes; the partition plate mold moves to abut against a limiting block, and the limiting block is used for fixing the position of the partition plate on the partition plate mold.
Further, a separation sleeve is fixed at the top of the base; a rolling screen ring is fixedly arranged in the separation sleeve; the spacer sleeve feed plates of a plurality of layers are all provided with spacer sleeve channels in an array manner; one side of the plurality of layers of spacer sleeve feeding plates is provided with a through hole; the inner surface of the through hole is in sliding fit with a spacer sleeve sliding device; the spacer feeder is used for feeding spacers into spacer limiting grooves in the limiting rotating shaft in an orderly arrangement mode through the spacer sleeve and the rolling screen ring.
Further, the partition plate die is of a rectangular plate structure; the upper surface of the partition plate die is uniformly provided with the inserting plate holes in an array manner; the plate inserting holes comprise cathode plate holes and anode plate holes; the cathode plate hole is matched with a cathode plate; the anode plate holes are matched with anode plates; a plurality of handles are fixed on the upper surface of the clapboard mould; the cathode plate holes and the anode plate holes are used for alternately placing cathode plates and anode plates, and ten spacers are placed between every two of the inserting plate holes through spacer limiting grooves of two limiting rotating shafts.
The invention has the following beneficial effects:
the invention can convey the spacers into the limiting rotating shaft in an orderly arrangement mode through the effects of the spacer feeder, the limiting rotating shaft and the operating platform, then the limiting rotating shaft rotates and moves to a position between each group of the partition plates, then the partition plate shaft is inserted, and the nut is screwed, thus completing the semi-automatic assembly process.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of an apparatus for assembling an electric field device according to the present invention;
FIG. 2 is a schematic structural diagram of an operation table, a limiting rotating shaft and a spacer feeder;
FIG. 3 is a schematic structural diagram of an operation table and a limiting rotation shaft;
FIG. 4 is a front view of the structure of FIG. 3;
FIG. 5 is a schematic view of the structure of the operation table;
FIG. 6 is a schematic view of the structure of the diaphragm mold and the diaphragm;
in the drawings, the components represented by the respective reference numerals are listed below:
1-spacer feeder, 2-limiting rotating shaft, 3-operating platform, 4-spacer die, 101-base, 102-spacer sleeve, 103-rolling screen ring, 104-spacer feeding plate, 105-spacer channel, 106-through hole, 107-spacer sliding device, 201-through hole, 202-rectangular plate, 203-spacer limiting groove, 301-fixing plate, 302-elliptical through hole, 303-rectangular groove, 304-rectangular sliding block, 305-bidirectional hydraulic cylinder, 306-motor, 307-rectangular sliding groove, 308-rectangular groove, 309-limiting block, 401-inserting plate hole, 402-handle, 403-cathode plate and 404-anode plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention is an apparatus for assembling an electric field device, including a spacer feeder 1, a limiting shaft 2 and an operation table 3;
as shown in fig. 1, the spacer feeder 1 includes a base 101; the base 101 is provided with five layers of spacer sleeve feeding plates 104;
a through hole 201 is formed in one end face of the limiting rotating shaft 2; a rectangular plate 202 is arrayed on one side of the limiting rotating shaft 2; five spacer sleeve limiting grooves 203 are formed in one surface of the rectangular plate 202; the spacing rotating shaft 2 moves the spacing sleeve in the spacing groove 203 of the spacing sleeve to a designated position through rotation and movement, the designated position is the position of a partition plate on the partition plate die 4 for placing the spacing sleeve, then the partition plate shaft is inserted, and the nut is screwed on to complete the assembly of the electric field device;
four fixing plates 301 are fixed on the upper surface of the operating table 3; wherein, one surface of each of the two fixing plates 301 is provided with an elliptical through hole 302; one side surface of the operating platform 3 is provided with three rectangular grooves 303; rectangular sliding blocks 304 are slidably matched with the rectangular grooves 303 on the two sides, and a bidirectional hydraulic cylinder 305 is fixed on the inner surface of the other rectangular groove 303; two end faces of the bidirectional hydraulic cylinder 305 are fixedly connected with the rectangular sliding block 304; the upper surface of the rectangular sliding block 304 is fixed with a motor 306;
the fixing plate 301 is used for limiting the movement of the rotating shaft 2 on the output shaft of the motor 306, so that the stability of the output shaft is improved by the fixing plates 301 on the two sides; the elliptical through hole 302 is used for subtracting a movement obstruction from an output shaft of the motor 306 under the sliding action of the rectangular sliding block 304; the bidirectional hydraulic cylinder 305 provides sliding power for the rectangular sliding blocks 304 on the two side faces, and the rectangular sliding blocks 304 drive the motor 306 and the limiting rotating shaft 2 to move; the motor 306 provides rotating power for the limiting rotating shaft 2;
the inner surface of the through hole 201 is fixedly connected with an output shaft of a motor 306; one opposite side surface of the operating platform 3 is fixedly connected with the five layers of spacer sleeve feeding plates 104 of the base 101.
Preferably, as shown in fig. 5, a rectangular chute 307 is provided on one surface of the operation table 3; the upper surface of the operating platform 3 is provided with a rectangular groove 308 matched with the rectangular sliding groove 307; the inner surfaces of the rectangular sliding groove 307 and the rectangular groove 308 are matched with a partition plate mold 4 in a sliding way; the rectangular sliding groove 307 is used for placing the partition plate die 4 and manually inserting the partition plate on the partition plate die 4, and the rectangular sliding groove 307 has the function of simultaneously inserting the partition plate on the partition plate die 4 when semi-automatic assembly is not influenced, so that the assembly is saved, and the assembly efficiency is improved; rectangular channel 308 is used for placing the baffle mould 4 that has inserted the baffle, and is used for spacing pivot 2 to remove the spacer to the assigned position after for the semicircle of spacer and the spacing recess 203 one side of spacer of spacing pivot 2 is in concentric state, alright this moment in order to insert the baffle axle.
Preferably, as shown in fig. 3, the output shaft of the motor 306 is slidably fitted with the elliptical through hole 302; a limiting block 309 is arranged on one opposite side surface of the fixing plate 301 with the oval through hole 302; the partition plate die 4 moves to abut against the limiting block 309, and the limiting block 309 is used for fixing the partition plate position on the partition plate die 4.
Preferably, as shown in fig. 1 and 2, a spacer sleeve 102 is fixed on the top of the base 101; a rolling screen ring 103 is fixedly arranged in the partition sleeve 102; the five-layer spacer bush feeding plates 104 are all provided with spacer bush channels 105 in an array manner; a through hole 106 is arranged on one side surface of the five-layer spacer sleeve feeding plate 104; a spacer sliding device 107 is in sliding fit with the inner surface of the through hole 106; the spacer feeder 1 orderly sends the spacers into the spacer limiting groove 203 in the limiting rotating shaft 2 through the spacer sleeve 102, the rolling screen ring 103 and the spacer sliding device 107.
Preferably, as shown in fig. 6, the spacer die 4 has a rectangular plate structure; the upper surface of the partition plate die 4 is uniformly provided with inserting plate holes 401 in an array manner; the pin plate holes 401 include cathode plate holes and anode plate holes; the cathode plate holes are matched with cathode plates 403; the anode plate holes are matched with anode plates 404; two handles 402 are fixed on the upper surface of the partition plate mould 4; the cathode plate holes and the anode plate holes are used for alternately placing cathode plates and anode plates, and ten spacers are placed between every two inserting plate holes 401 through the spacer limiting grooves 203 of the two limiting rotating shafts 2.
The working flow of this embodiment is: SS01, spacer feeder 1 through spacer sleeve 102 and rolling sieve ring 103, and spacer sliding device 107, will separate the spacer to arrange the ordered feeding into the spacing groove 203 of spacer in the spacing spindle 2;
SS02 and a motor 306 control the limit rotating shaft 2 to rotate for 180 degrees;
SS03, manually inserting the cathode plate and the anode plate on the partition plate die 4 in an alternating manner, sliding the partition plate die 4 onto the rectangular groove 308, and moving the partition plate die 4 to abut against the limiting block 309;
SS04, the bidirectional hydraulic cylinder 305 controls the limit rotating shaft 2 to move to a designated position through the rectangular sliding block 304 and the output shaft of the motor 306;
SS05, inserting a clapboard shaft into a spacer bush in the spacer bush limiting groove 203, sequentially penetrating the spacer bush, a cathode plate and an anode plate through the clapboard shaft, sleeving the spacer bush on two sides, and screwing a nut;
SS06, lifting the partition plate die 4 by the handle 402, namely completing the assembly process of the electric field device; SS01 is repeated.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (5)

1. An apparatus for electric field device assembly, characterized by: comprises a spacer feeder (1), a limiting rotating shaft (2) and an operating platform (3);
the spacer feeder (1) comprises a base (101); the base (101) is provided with a plurality of layers of spacer sleeve feeding plates (104);
a through hole (201) is formed in one end face of the limiting rotating shaft (2); a rectangular plate (202) is arrayed on one side of the limiting rotating shaft (2); a plurality of layers of spacer sleeve limiting grooves (203) are formed in one surface of the rectangular plate (202);
a plurality of fixing plates (301) are fixed on the upper surface of the operating table (3); one surface of each of the two fixing plates (301) is provided with an elliptical through hole (302), namely one surface of each of the two fixing plates (301) close to one side of a motor (306) on the operating table (3) is provided with an elliptical through hole (302); three rectangular grooves (303) are formed in one side face of the operating table (3); rectangular sliding blocks (304) are matched with the rectangular grooves (303) on the two sides in a sliding mode, and a bidirectional hydraulic cylinder (305) is fixed on the inner surface of the other rectangular groove (303); two end faces of the bidirectional hydraulic cylinder (305) are fixedly connected with the rectangular sliding block (304); a motor (306) is fixed on the upper surface of the rectangular sliding block (304);
the inner surface of the through hole (201) is fixedly connected with an output shaft of a motor (306); one opposite side surface of the operating platform (3) is fixedly connected with a plurality of layers of spacer sleeve feeding plates (104) of the base (101).
2. An apparatus for electric field device assembly according to claim 1, characterized in that said operating table (3) is provided with a rectangular chute (307) on one surface; the upper surface of the operating platform (3) is provided with a rectangular groove (308) matched with the rectangular sliding groove (307); and the inner surfaces of the rectangular sliding groove (307) and the rectangular groove (308) are respectively in sliding fit with a partition plate die (4).
3. An apparatus for electric field device assembly according to claim 1, wherein the output shaft of the motor (306) is a sliding fit with an elliptical through hole (302); and limiting blocks (309) are arranged on the opposite side surfaces of the fixing plate (301) provided with the oval through holes (302).
4. An apparatus for electric field device assembly according to claim 1, characterized in that a spacer sleeve (102) is fixed on top of the base (101); a rolling screen ring (103) is fixedly arranged in the partition sleeve (102); the spacer sleeve feed plates (104) are all provided with spacer sleeve channels (105) in an array; one side of the plurality of layers of spacer sleeve feeding plates (104) is provided with a through hole (106); the inner surface of the through hole (106) is in sliding fit with a spacer sliding device (107).
5. An apparatus for electric field device assembly according to claim 2, characterized in that the partition form (4) is of rectangular plate structure; the upper surface of the partition plate die (4) is uniformly provided with inserting plate holes (401); the pin plate holes (401) comprise cathode plate holes and anode plate holes; the cathode plate holes are matched with cathode plates (403); the anode plate holes are matched with an anode plate (404); a plurality of handles (402) are fixed on the upper surface of the clapboard mould (4).
CN201810501577.9A 2018-05-23 2018-05-23 Equipment for assembling electric field device Active CN108971966B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810501577.9A CN108971966B (en) 2018-05-23 2018-05-23 Equipment for assembling electric field device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810501577.9A CN108971966B (en) 2018-05-23 2018-05-23 Equipment for assembling electric field device

Publications (2)

Publication Number Publication Date
CN108971966A CN108971966A (en) 2018-12-11
CN108971966B true CN108971966B (en) 2020-03-10

Family

ID=64542600

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810501577.9A Active CN108971966B (en) 2018-05-23 2018-05-23 Equipment for assembling electric field device

Country Status (1)

Country Link
CN (1) CN108971966B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278245A (en) * 1979-11-23 1981-07-14 General Electric Company Apparatus for clamping a plurality of elements
CN202963943U (en) * 2012-10-31 2013-06-05 昆山高晟精密机电有限公司 Roller loading mechanism of electric drill gear case assembling production line
CN106736490A (en) * 2016-12-14 2017-05-31 长兴水木机电有限公司 One kind automation continous way assembling and order output equipment
CN206936812U (en) * 2017-06-14 2018-01-30 温岭德光自动化设备有限公司 Accurate filter Full-automatic assembling machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278245A (en) * 1979-11-23 1981-07-14 General Electric Company Apparatus for clamping a plurality of elements
CN202963943U (en) * 2012-10-31 2013-06-05 昆山高晟精密机电有限公司 Roller loading mechanism of electric drill gear case assembling production line
CN106736490A (en) * 2016-12-14 2017-05-31 长兴水木机电有限公司 One kind automation continous way assembling and order output equipment
CN206936812U (en) * 2017-06-14 2018-01-30 温岭德光自动化设备有限公司 Accurate filter Full-automatic assembling machine

Also Published As

Publication number Publication date
CN108971966A (en) 2018-12-11

Similar Documents

Publication Publication Date Title
CN107953107B (en) Connecting sleeve assembly line for emulsifying seismic explosive column production line
CN206229944U (en) A kind of power equipment maintaining cable shear
CN104308891B (en) Long square platform hydraulic piercing press
CN107975662A (en) A kind of monitoring device of panorama type photovoltaic micro
CN108971966B (en) Equipment for assembling electric field device
CN107853862A (en) A kind of easy-to-mount hairbrush
CN108772271A (en) A kind of grain screening plant of sieving plate easy to disassemble
CN111590355A (en) Plate automatic clamping device for architectural decoration
CN209781460U (en) thrust bearing
CN102562831A (en) Device for automatically flicking and mounting balls for deep-groove ball bearing
CN107030463B (en) Automatic installation device for laminated busbar base
CN214734188U (en) Library receives and arranges books device
CN204545925U (en) A kind of full automatic hair cover mandrel assembly machine
CN108942203B (en) Spacing rotating shaft of spacer bush for assembling electric field device and fitting
CN209598231U (en) A kind of base of tool of concentricity processing in part two sides convenient for adjusting angle
CN211805666U (en) Clamp with high stability for sole machining
CN210173432U (en) Automatic nut dismounting tool for mining mechanical equipment
CN208130281U (en) A kind of practical fire pump adapter
CN112371839A (en) Machining device and machining method of self-adaptive voltage-stabilizing throttle valve plate
CN204209362U (en) The attaching/detaching apparatus of a kind of external member and internal member
CN208930141U (en) A kind of converter tilting speed reducer bull gear dismounting device
CN218896736U (en) Combined battery box
CN209110683U (en) A kind of drilling processing electrode holder
CN108516493B (en) Adjustable lifting machine for airplane wheels and using method thereof
CN210802199U (en) Dismounting device of heat exchanger flange

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