CN202307176U - Rod cluster grabbing tool - Google Patents

Rod cluster grabbing tool Download PDF

Info

Publication number
CN202307176U
CN202307176U CN2011204144526U CN201120414452U CN202307176U CN 202307176 U CN202307176 U CN 202307176U CN 2011204144526 U CN2011204144526 U CN 2011204144526U CN 201120414452 U CN201120414452 U CN 201120414452U CN 202307176 U CN202307176 U CN 202307176U
Authority
CN
China
Prior art keywords
cluster
grappling fixture
long handle
urceolus
handle
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.)
Withdrawn - After Issue
Application number
CN2011204144526U
Other languages
Chinese (zh)
Inventor
景益
高雷
吴基东
李传毅
胡士光
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.)
Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Original Assignee
Shanghai Nuclear Engineering Research and Design Institute 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 Shanghai Nuclear Engineering Research and Design Institute Co Ltd filed Critical Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Priority to CN2011204144526U priority Critical patent/CN202307176U/en
Application granted granted Critical
Publication of CN202307176U publication Critical patent/CN202307176U/en
Anticipated expiration legal-status Critical
Withdrawn - After Issue legal-status Critical Current

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
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Landscapes

  • Load-Engaging Elements For Cranes (AREA)

Abstract

The utility model belongs to the technical field of heavy-water reactor cobalt-60 and particularly relates to a rod cluster grabbing tool. Three connection rods of a grabbing head of the tool respectively penetrate through a grabbing head baseboard, three steel tubes A, a positioning support, three steel tubes B, a grabbing head top plate and a long handle outer barrel connection board sequentially from bottom to top, and are respectively fixed on the long handle outer barrel connection board through three nuts. Three hook claws are respectively evenly fixed on the periphery of the positioning support through three pins. A C-shaped groove with a downward opening is arranged at the lower end of a guide barrel of an operation handle, the lower end of the guide barrel is welded with the upper end of an outer barrel, and the lower end of the outer barrel is welded with the long handle outer barrel connection board. A sliding block is located in the guide barrel, and a handle is installed on the sliding block and penetrates through the C-shaped groove on the guide barrel. The upper end of an inner barrel of a long handle is welded with the sliding block, the lower end of the inner barrel sequentially penetrates through the long handle outer barrel connection board and a round hole at the center of the grabbing head top plate to be connected with a locking board through bolts, the locking board is located between the positioning support and the grabbing head top plate, and the outer lateral surface of the locking board is contacted with guide surfaces on the inner sides of the upper ends of the three hook claws.

Description

The cluster gripping tool
Technical field
The utility model belongs to PHWR cobalt-60 production technical field, is specially a kind of cobalt-60 source rod cluster gripping tool.
Background technology
Cobalt-60 source rod is cobalt regulating rod a kind of radiation source through obtaining behind the irradiation in heavy water reactor.Cobalt-60 source rod the assembly that draws off in the reactor need pass through discharging, transport, tumble and operation such as disintegration.Because cobalt-60 source rod assembly has radioactivity; In order to protect operating personnel, need place it under water, carry out remote-controlled operation on the water by operating personnel; Therefore need a kind of can the shield water layer thickness, be convenient to remote operated cobalt-60 source rod cluster gripping tool again.
Summary of the invention
The purpose of the utility model be to provide a kind of can the shield water layer thickness, be convenient to remote operated cobalt-60 source rod cluster gripping tool again, avoid radiation injury with the protection operating personnel.
In order to achieve the above object, the technical scheme that the utility model adopted is following: a kind of cluster gripping tool, and this instrument comprises grappling fixture, operating handle and long handle; Grappling fixture comprises grappling fixture top board, three steel pipe A, latch, locating rack, three steel pipe B, three hooks, grappling fixture base plate, three connecting rods and long handle urceolus web joint; Operating handle comprises guide cylinder, handle, slide block; Long handle comprises inner core, urceolus; Said long handle urceolus web joint center has circular hole, evenly has three vertical through hole on every side; Grappling fixture top board center has circular hole, evenly has three vertical through hole on every side; Evenly have three vertical through hole around the grappling fixture base plate; Locating rack circlewise, the outside of ring is equidistant to have six teats, three teat upper edges wherein circumferentially have three horizontal through hole, other three teats have three vertical through hole, and horizontal through hole and equidistant staggered the arranging of vertical through hole; Three pins pass three horizontal through hole respectively, and fixing respectively three hooks, hook can be that axle rotates with the pin; Latch is the plectane that is polished into fillet around, and its lateral surface contacts with three inboard spigot surfaces in hook upper end; Three connecting rods pass grappling fixture base plate, three steel pipe A, locating rack, three steel pipe B, grappling fixture top board and long handle urceolus web joints from bottom to top respectively successively, are fixed in respectively on the long handle urceolus web joint with three nuts; The guide cylinder lower end has the C shape groove that Open Side Down, the upper end welding of its lower end and urceolus, the lower end of urceolus and the welding of long handle urceolus web joint; Slide block is positioned at guide cylinder, can in guide cylinder, slide up and down and left-right rotation, and handle is installed on the slide block, and passes the C shape groove on the guide cylinder, can slide and rests on the left side or the right side minimum point of C shape groove along C shape groove; Inner core upper end and slide block welding, the lower end is passed the circular hole at long handle urceolus web joint and grappling fixture top board center successively, is connected through bolt with latch, and latch is between locating rack and grappling fixture top board.
There is the boss of high 1mm the inboard, lower end of said hook.
Said grappling fixture base plate downside has a concave station that diameter is identical with the cluster top end diameter.
Said operating handle also comprises suspension ring and plug, suspension ring and plug welding, plug and the welding of guide cylinder upper end.
The C shape groove top of said guide cylinder is equipped with latch, is used to prevent the maloperation of handle.
Said C shape groove right side minimum point is higher than the left side minimum point.
Be welded with sign on the said urceolus, when grasping cluster, sign must not be higher than the operating platform height of armrests.
Said grappling fixture top board, grappling fixture base plate and long handle urceolus web joint are equilateral triangle, and three vertical through hole that evenly have around it all are positioned at place, leg-of-mutton three angles.
The lower end diameter of said three connecting rods is thicker, and there is screw thread the upper end, is used for cooperating with three nuts three connecting rods are fastened on long handle urceolus web joint.
Said cluster gripping tool physical dimension is: 130mm * 242mm * 5500mm, weight is 22kg.
The beneficial effect that the utility model is obtained is:
(1) this cluster gripping tool can be dismantled cobalt cluster and the upper head plate in the cobalt-60 source rod assembly smoothly, satisfies the production technology of cobalt-60;
(2) this cluster gripping tool total length is about 5500mm, satisfies remote operated requirement under water;
Shield water layer thickness when (3) design of the sign on this cluster gripping tool long handle can guarantee operation;
(4) operating handle of this cluster gripping tool mode of operation of in the C of guide cylinder shape groove, sliding has advantages such as convenient, fast, safe, can prevent that the hook accident from unclamping;
(5) this cluster gripping tool utilizes the refuse receiving magazine to position, and is convenient and reliable, directly do not contact cobalt-60 source rod assembly, can when the location, not damage cobalt-60 source rod;
(6) before cobalt-60 source rod assembly stretches out the basket of tumbling that the cluster gripping tool is in place, it can play position-limiting action, the operation of the basket of conveniently tumbling when promoting cobalt-60 source rod assembly like this.
Description of drawings
Fig. 1 is the said cluster gripping tool of a utility model structural drawing;
Fig. 2 is the grappling fixture structural drawing of the said cluster gripping tool of the utility model;
Fig. 3 is the grappling fixture A-A sectional view of the said cluster gripping tool of the utility model;
Fig. 4 is the operating handle structural drawing of the said cluster gripping tool of the utility model;
Fig. 5 is the long handle structural drawing of the said cluster gripping tool of the utility model.
Among the figure: 1, grappling fixture; 2, operating handle; 3, long handle; 4, refuse receiving magazine; 5, cluster; 11, nut; 12, grappling fixture top board; 13, steel pipe A; 14, latch; 15, bolt; 16, locating rack; 17, pin; 18, hook; 19, grappling fixture base plate; 110, connecting rod; 111, long handle urceolus web joint; 112, steel pipe B; 21, suspension ring; 22, plug; 23, guide cylinder; 24, handle; 25, slide block; 26, latch; 31, inner core; 32, urceolus; 33, sign.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further explain.
As shown in Figure 1, the utility model said cobalt-60 source rod cluster gripping tool comprises grappling fixture 1, operating handle 2 and long handle 3, and grappling fixture 1 is connected with long handle 3 lower ends, and operating handle 2 is connected with long handle 3 upper ends.
Like Fig. 2, shown in Figure 3; Grappling fixture 1 integral body is triangular structure, comprises three nuts 11, grappling fixture top board 12, three steel pipe A13, latch 14, bolt 15, locating rack 16, three steel pipe B112,17, three hooks 18 of three pins, grappling fixture base plate 19, three connecting rods 110 and long handle urceolus web joints 111; Wherein long handle urceolus web joint 111 is shaped as equilateral triangle; Its center has circular hole, and being used for provides guiding to the inner core 31 of long handle 3, and inner core 31 passes from this circular hole; The place has three vertical through hole at leg-of-mutton three angles, is used to make three connecting rods 110 to pass respectively; Grappling fixture top board 12 is shaped as equilateral triangle, and its center has circular hole, and being used for provides guiding to the inner core 31 of long handle 3, and inner core 31 passes from this circular hole, and the place has three vertical through hole at leg-of-mutton three angles, is used to make three connecting rods 110 to pass respectively; Locating rack 16 circlewise, the outside of ring is equidistant to have six teats, three teat upper edges wherein circumferentially have three horizontal through hole, other three teats have three vertical through hole, and horizontal through hole and equidistant staggered the arranging of vertical through hole; Three pins 17 pass three horizontal through hole respectively, are used for fixing respectively three hooks 18, and hook 18 can serve as that axle rotates with pin 17; The inboard, upper end of hook 18 is a spigot surface, and there is the boss of high about 1mm the inboard, lower end of hook 18, is used to catch on cluster 5; Latch 14 is the plectanes that are polished into fillet around; Be connected with inner core 31 lower ends of long handle 3 through bolt 15; Can be along with inner core 31 move up and down, the lateral surface of latch 14 contacts with the inboard spigot surface in three hook 18 upper ends, when latch 14 moves up and down along with inner core 31; Slide on the spigot surface of the inboard, upper end of hook 18 in the outside of latch 14, promotion hook 18 is firmly grasped or opened; Grappling fixture base plate 19 shapes are identical with grappling fixture top board 12, but do not have center hole, only have a diameter and the identical concave station of cluster 5 top end diameter at downside, so that cluster 5 location; The lower end diameter of connecting rod 110 is thicker; There is screw thread the upper end; During assembling from bottom to top three connecting rods 110 pass grappling fixture base plate 19, three steel pipe A13, locating rack 16, three steel pipe B112, grappling fixture top board 12 and long handle urceolus web joints 111 respectively successively; Respectively three connecting rods 110 are fastened on the long handle urceolus web joint 111 with three nuts 11, guarantee the relative fixed of locating rack 16 and grappling fixture top board 12, grappling fixture base plate 19; Two steel pipe A13 on every connecting rod 110 and steel pipe B112 are used for controlling the distance between locating rack 16 and grappling fixture base plate 19, the grappling fixture top board 12; Latch 14 and is arranged in the space that three connecting rods 110 constitute between locating rack 16 and grappling fixture top board 12.
As shown in Figure 4, operating handle 2 comprises suspension ring 21, plug 22, guide cylinder 23, handle 24, slide block 25 and latch 26.Wherein suspension ring 21 weld with plug 22, plug 22 and the welding of guide cylinder 23 upper ends; Guide cylinder 23 is cylinders that a lower end has C shape groove, and C shape channel opening is downward, and the right side minimum point is higher than the left side minimum point, the upper end welding of the urceolus 32 of the lower end of guide cylinder 23 and long handle 3; Slide block 25 is positioned at guide cylinder 23, is used to connect the inner core 31 and handle 24 of long handle 3, in guide cylinder 23, slides up and down and left-right rotation; Handle 24 is installed on the slide block 25; And pass the C shape groove on the guide cylinder 23, can slide and rest on the left side or the right side minimum point of C shape groove, two stations of these 2 respective operations handles 2 along C shape groove; When operating handle 2 is positioned at the left side minimum point; The hook 18 of grappling fixture 1 opens, when operating handle 2 on the right side during minimum point, the hook 18 of grappling fixture 1 is promptly; Latch 26 is installed in the C shape groove top of guide cylinder 23, is used to prevent the maloperation of handle 24.
As shown in Figure 5, long handle 3 comprises inner core 31, urceolus 32 and identifies 33; Inner core 31 upper ends and slide block 25 welding, the lower end is connected through bolt 15 with latch 14; Urceolus 32 upper ends and guide cylinder 23 welding, lower end and 111 welding of long handle urceolus web joint are welded with a sign 33 on the urceolus 32, and when grasping cluster 5, sign 33 must not be higher than the operating platform height of armrests, to guarantee the thickness of cluster 5 tops shielding water layer.
This cluster gripping tool physical dimension is about: 130mm * 242mm * 5500mm, weight is about 22kg.
During use, operating personnel drive slide blocks 25 through handle 24 and in the C of guide cylinder 23 shape groove, slide, thereby drive the sliding up and down of inner core 31 of long handle 3, and then drive latch 14 and move up and down, and latch 14 promotes hooks 18 promptly or open; When handle 24 was arranged in the C shape groove higher position of guide cylinder 23, latch 14 withstood on the first half of the inboard spigot surface in hook 18 upper ends, made hook 18 be in promptly state; When handle 24 was arranged in the C shape groove lower position of guide cylinder 23, latch 14 withstood on the latter half of the inboard spigot surface in hook 18 upper ends, makes hook 18 be in open configuration.
This instrument is suspended on the operation tool storage rack through suspension ring 21 at ordinary times; Before using this instrument to grasp cluster 5, handle 24 is placed the C shape groove left side minimum point of guide cylinder 23, hook 18 is opened; Be located the center of refuse receiving magazine 4 then through the suspension hook that is suspended on the factory building crane, utilize the lift mechanism lifts cluster 5 on the tipple, cluster 5 tops are got in the concave station of grappling fixture base plate 19 downsides; Lifting handle 24 then, and the C shape groove right side that its rotation is placed guide cylinder 23 is to minimum point, this moment grappling fixture 1 hook 18 just promptly with cluster 5; Plug latch 26 then, handle 24 just can't slide into the left side from the C shape groove right side of guide cylinder 23, has guaranteed can not cause hook 18 to unclamp owing to the maloperation of handle 24; Then utilize crane that the cluster gripping tool is proposed, be put into the hanging basket top on the underwater platform behind translation one segment distance, unclamp latch 26, handle 24 is slided into the left side minimum point of the C shape groove of guide cylinder 23, cluster 5 just falls into hanging basket; At last the cluster gripping tool is repositioned onto on the refuse receiving magazine 4, prepares next operation.

Claims (10)

1. cluster gripping tool, it is characterized in that: this instrument comprises grappling fixture (1), operating handle (2) and long handle (3); Grappling fixture (1) comprises grappling fixture top board (12), three steel pipe A (13), latch (14), locating rack (16), three steel pipe B (112), three hooks (18), grappling fixture base plate (19), three connecting rods (110) and long handle urceolus web joint (111); Operating handle (2) comprises guide cylinder (23), handle (24), slide block (25); Long handle (3) comprises inner core (31), urceolus (32); Said long handle urceolus web joint (111) center has circular hole, evenly has three vertical through hole on every side; Grappling fixture top board (12) center has circular hole, evenly has three vertical through hole on every side; Grappling fixture base plate (19) evenly has three vertical through hole on every side; Locating rack (16) circlewise, the outside of ring is equidistant to have six teats, three teat upper edges wherein circumferentially have three horizontal through hole, other three teats have three vertical through hole, and horizontal through hole and equidistant staggered the arranging of vertical through hole; Three pins (17) pass three horizontal through hole respectively, fixing respectively three hooks (18), and hook (18) can serve as that axle rotates with pin (17); Latch (14) is the plectane that is polished into fillet around, and its lateral surface contacts with the inboard spigot surface in three hooks (18) upper end; Three connecting rods (110) pass grappling fixture base plate (19), three steel pipe A (13), locating rack (16), three steel pipe B (112), grappling fixture top board (12) and long handle urceolus web joint (111) from bottom to top respectively successively, are fixed in respectively on the long handle urceolus web joint (111) with three nuts (11); Guide cylinder (23) lower end has the C shape groove that Open Side Down, the upper end welding of its lower end and urceolus (32), the lower end of urceolus (32) and long handle urceolus web joint (111) welding; Slide block (25) is positioned at guide cylinder (23), can in guide cylinder (23), slide up and down and left-right rotation, and handle (24) is installed on the slide block (25), and passes the C shape groove on the guide cylinder (23), can slide and rests on the left side or the right side minimum point of C shape groove along C shape groove; Inner core (31) upper end and slide block (25) welding, the lower end is passed the circular hole at long handle urceolus web joint (111) and grappling fixture top board (12) center successively, is connected through bolt (15) with latch (14), and latch (14) is positioned between locating rack (16) and the grappling fixture top board (12).
2. cluster gripping tool according to claim 1 is characterized in that: there is the boss of high 1mm the inboard, lower end of said hook (18).
3. cluster gripping tool according to claim 1 is characterized in that: said grappling fixture base plate (19) downside has a diameter and the identical concave station of cluster (5) top end diameter.
4. cluster gripping tool according to claim 1 is characterized in that: said operating handle (2) also comprises suspension ring (21) and plug (22), suspension ring (21) and plug (22) welding, plug (22) and the welding of guide cylinder (23) upper end.
5. cluster gripping tool according to claim 1 is characterized in that: the C shape groove top of said guide cylinder (23) is equipped with latch (26), is used to prevent the maloperation of handle (24).
6. cluster gripping tool according to claim 1 is characterized in that: said C shape groove right side minimum point is higher than the left side minimum point.
7. cluster gripping tool according to claim 1 is characterized in that: be welded with sign (33) on the said urceolus (32), when grasping cluster (5), sign (33) must not be higher than the operating platform height of armrests.
8. cluster gripping tool according to claim 1; It is characterized in that: said grappling fixture top board (12), grappling fixture base plate (19) and long handle urceolus web joint (111) are equilateral triangle, and three vertical through hole that evenly have around it all are positioned at place, leg-of-mutton three angles.
9. cluster gripping tool according to claim 1 is characterized in that: the lower end diameter of said three connecting rods (110) is thicker, and there is screw thread the upper end, is used for cooperating with three nuts (11) three connecting rods (110) are fastened on long handle urceolus web joint (111).
10. cluster gripping tool according to claim 1 is characterized in that: said cluster gripping tool physical dimension is: 130mm * 242mm * 5500mm, weight is 22kg.
CN2011204144526U 2011-10-26 2011-10-26 Rod cluster grabbing tool Withdrawn - After Issue CN202307176U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204144526U CN202307176U (en) 2011-10-26 2011-10-26 Rod cluster grabbing tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204144526U CN202307176U (en) 2011-10-26 2011-10-26 Rod cluster grabbing tool

Publications (1)

Publication Number Publication Date
CN202307176U true CN202307176U (en) 2012-07-04

Family

ID=46376021

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204144526U Withdrawn - After Issue CN202307176U (en) 2011-10-26 2011-10-26 Rod cluster grabbing tool

Country Status (1)

Country Link
CN (1) CN202307176U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103077755A (en) * 2011-10-26 2013-05-01 上海核工程研究设计院 Rod bundle grabbing tool
CN106958295A (en) * 2017-04-24 2017-07-18 王文灿 A kind of fast easily buckle assembly and containing its quick installation tool
RU189815U1 (en) * 2018-08-22 2019-06-05 Акционерное общество "Атоммашэкспорт" (АО "Атоммашэкспорт") CAPTURE OF FA Cluster for Nuclear Power Plants With a VVER-TYPE REACTOR
CN110767336A (en) * 2019-11-18 2020-02-07 中核核电运行管理有限公司 Underwater telescopic tool for cobalt isotope production

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103077755A (en) * 2011-10-26 2013-05-01 上海核工程研究设计院 Rod bundle grabbing tool
CN103077755B (en) * 2011-10-26 2016-07-06 上海核工程研究设计院 Rod cluster grabbing tool
CN106958295A (en) * 2017-04-24 2017-07-18 王文灿 A kind of fast easily buckle assembly and containing its quick installation tool
CN106958295B (en) * 2017-04-24 2022-08-09 王文灿 Quick and easy buckling assembly and quick mounting tool comprising same
RU189815U1 (en) * 2018-08-22 2019-06-05 Акционерное общество "Атоммашэкспорт" (АО "Атоммашэкспорт") CAPTURE OF FA Cluster for Nuclear Power Plants With a VVER-TYPE REACTOR
CN110767336A (en) * 2019-11-18 2020-02-07 中核核电运行管理有限公司 Underwater telescopic tool for cobalt isotope production

Similar Documents

Publication Publication Date Title
CN103077755A (en) Rod bundle grabbing tool
CN202307176U (en) Rod cluster grabbing tool
RU2418329C1 (en) Device for lifting and moving spent fuel assemblies
CN105252549A (en) Suspension telescopic cylinder and mechanical arm fast installing and uninstalling system under nuclear radiation environment
CN209922749U (en) Gantry hoisting module
CN211004217U (en) Diesel engine cylinder jacket hoisting tool
CN111017693A (en) Isometric shaped steel hoist and mount special lifting device
CN108689299B (en) The dilatation of million kilowatt Spent Fuel Pool removes overturning technique with old screen work
CN205349253U (en) Automatic discharging equipment of drilling string
CN201359859Y (en) Long pole gripping apparatus
CN209401334U (en) A kind of coordinated type resistance plug assembly gripping apparatus
CN201982036U (en) Three-joint unitcentering device
CN103663095B (en) Cylinder body bobbin core group chevron pointing reversal hanger
CN203638979U (en) Device for mounting tank floor in low-temperature storage tank
CN203372992U (en) Clamp for lifting large polycrystalline ingot casting crucible
CN101740146B (en) Double-station gripping apparatus
CN202296812U (en) Device for automatically fetching and releasing weight
CN215101481U (en) Barrel grabbing device with ratchet mechanism
CN102117668B (en) Reactor core unloading tool
CN108639926B (en) Turnover method for old grillwork for expanding spent fuel pool
CN211169776U (en) Electric screw type well lid hoisting device
CN207997252U (en) A kind of heat exchanger displacement tooling
CN201348884Y (en) Gripping apparatus of choke plug subassembly
CN204057754U (en) One hangs chain gripper carrying implement
CN203942181U (en) Metal armouring cabinet moves installation special tool

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20120704

Effective date of abandoning: 20160706

C25 Abandonment of patent right or utility model to avoid double patenting