CN204081520U - Pre-stress stretching device - Google Patents
Pre-stress stretching device Download PDFInfo
- Publication number
- CN204081520U CN204081520U CN201420403007.3U CN201420403007U CN204081520U CN 204081520 U CN204081520 U CN 204081520U CN 201420403007 U CN201420403007 U CN 201420403007U CN 204081520 U CN204081520 U CN 204081520U
- Authority
- CN
- China
- Prior art keywords
- jack
- stretch
- clip sheet
- draw
- ground tackle
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of pre-stress stretching device, comprise anchor plate, the work ground tackle be fixed on anchor plate, part be embedded in work clip sheet, stretch-draw assembly and supplementary anchorage assembly in work ground tackle.Supplementary anchorage assembly comprises the first jack; The first end of the first jack is provided with stripper plate, and the compressive plane of this stripper plate contacts with work clip sheet, and the second end of the first jack is fixed with the first instrument ground tackle and the first tool clamping piece.When stretch-draw assembly carries out stretch-draw to externally cable, the first tool clamping piece in vitro Shu Yidong time produce frictional force, work clip sheet in vitro Shu Yidong time do not produce frictional force; After the stretching force restrainted in vitro reaches and limits requirement, the backhaul oil circuit in the first jack controls stripper plate and is all clamp-oned by work clip sheet in work ground tackle, to make work clip sheet by externally cable anchoring.The utility model can effectively prevent work clip sheet and externally cable not all to be damaged when stretch-draw.
Description
Technical field
The utility model relates to Construction of Civil Engineering apparatus field, is specifically related to a kind of pre-stress stretching device.
Background technology
External prestressing is one of important branch of post-tensioned prestressing system, and external prestressing was defined as the prestressing force of external tendon structural configuration outside concrete section in 1996 by international prestressing force association (FIP).External prestressing has the advantages such as such as sectional dimension is little, construction is simple, quality easily ensures, the more important thing is that external tendon can be replaced, re-opens and draw.
Before engineering structures part bears external applied load, prestressed stretch-draw need be carried out to the external tendon (as steel strand etc.) in tension module, to improve bending resistance and the rigidity of engineering structures part, postpone the time that crack occurs, increase the durability of engineering structures part.
Fig. 1 shows the structural representation of existing pre-stress stretching device.As shown in Figure 1, pre-stress stretching device comprises work ground tackle 101, work clip sheet 102, limiting plate 103, jack 104, instrument ground tackle 105 and tool clamping piece 106.Work ground tackle 101 and work clip sheet 102 are all for being anchored in anchor plate 110 by anchoring body external beam steel strand 107.Work clip sheet 102 is provided with pawl, bounces back after stretch-draw for avoiding externally cable steel strand 107.Instrument ground tackle 105 and tool clamping piece 106 are for utilizing jack 104 to block steel strand when tension steel strand, and make the stretching force of jack 104 be delivered on steel strand, after stretch-draw terminates, tool clamping piece 106 is recyclable reuses.When limiting plate 103 is for preventing steel strand tension, work clip sheet 102 is owing to exiting ground tackle by frictional force.
When the pre-stress stretching device of said structure exists following two problems:
1, work clip sheet is when being subject to the stretching force of jack, and the pawl on work clip sheet can produce violent friction with steel strand, and work clip sheet and steel strand all can be subject to damage in various degree, shortens the application life of work clip sheet and steel strand.
2, for making steel strand not perishable, the existing surface being applied to the steel strand of external prestressing all can apply epoxy resin layer.But because steel strand can produce larger frictional force with the pawl on work clip sheet when being subject to the stretching force of jack, the epoxy resin being then coated on steel strand surface just easily destroys and residues in the pawl of work clip sheet, cause during steel strand anchoring and produce slip, and then cause the extreme loss of stress.
Therefore be necessary to provide a kind of pre-stress stretching device that work clip sheet and steel strand can be prevented all not to be damaged when stretch-draw.
Utility model content
The purpose of this utility model is to provide a kind of pre-stress stretching device, and to solve the Problems existing of existing pre-stress stretching device in background technology, the utility model can realize work clip sheet and steel strand are not damaged when stretch-draw.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme:
A kind of pre-stress stretching device, comprise the anchor plate set gradually along externally cable axis direction, the work ground tackle be fixed on anchor plate, be partly embedded in the work clip sheet in work ground tackle and the stretch-draw assembly for externally cable described in stretch-draw, it is characterized in that, be also provided with between described work clip sheet and stretch-draw assembly: supplementary anchorage assembly;
Described supplementary anchorage assembly comprises the first jack; The first end of the first jack is provided with stripper plate, and the compressive plane of this stripper plate contacts with described work clip sheet, and the second end of the first jack is fixed with the first instrument ground tackle and the first tool clamping piece; The externally cable passed by described work clip sheet to enter in described stretch-draw assembly and by the anchoring of described stretch-draw assembly after stripper plate, the first instrument ground tackle and the first tool clamping piece pass;
When described stretch-draw assembly carries out stretch-draw to described externally cable, the first tool clamping piece produces frictional force when described externally cable moves, and described work clip sheet does not produce frictional force when described externally cable moves; After the stretching force restrainted in vitro reaches and limits requirement, the backhaul oil circuit in the first jack controls stripper plate and is all clamp-oned by described work clip sheet in described work ground tackle, to make described work clip sheet by externally cable anchoring.
Preferably, inner surface near first end in first jack has the circumferential storage tank along the first jack axis direction with certain length, the edge of described stripper plate is embedded in described circumferential storage tank, and described stripper plate moves and stops that when described work clip sheet is clamp-oned in described work ground tackle by described stripper plate described stripper plate continues to move in described circumferential storage tank.
Preferably, the first end of the first jack is provided with the first groove, and the first jack is fastened in the end of described work ground tackle by the first groove.
Preferably, before described stretch-draw assembly carries out stretch-draw or when carrying out stretch-draw, the length in described work clip sheet embedding work ground tackle is 1/4 ~ 1/3 of described work clip sheet total length.
Preferably, described stretch-draw assembly comprises the second jack, the second instrument ground tackle and the second tool clamping piece;
Second end of the second jack fixes the second instrument ground tackle, and the second tool clamping piece is fixed on the second instrument ground tackle; The first end of the second jack is provided with the second groove of accommodating first instrument ground tackle; Wherein, the one end near the first jack in the second jack is first end, and the one end away from the first jack is the second end;
The stretch-draw oil circuit of the first jack is parallel with the stretch-draw oil circuit of the second jack but the direction of motion is contrary.
Further, be provided with between the first tool clamping piece and the second groove of the second jack: limiting plate,
The first end of described limiting plate is provided with the 3rd groove and the 4th groove, and the 3rd groove makes described limiting plate be fastened on the first instrument ground tackle, and the first tool clamping piece is placed in the 4th groove; In second end end face of described limiting plate and the second jack, the bottom surface of the second groove is affixed.
Preferably, described work clip sheet is truncated cone-shaped, is made up of three slices points of intermediate plates, and the contact surface of described work clip sheet and externally cable has pawl shape screw thread, and described work clip sheet has elastic groove.
Described first tool clamping piece and the second tool clamping piece are truncated cone-shaped, the tool clamping piece be made up of three slices points of intermediate plates, and the contact surface of the first tool clamping piece and the second tool clamping piece and externally cable all has saw-tooth thread.
From above technical scheme, when stretch-draw assembly in the utility model carries out stretch-draw to externally cable, work clip sheet in vitro Shu Yidong time and externally cable can not produce frictional force, after the stretching force restrainted in vitro reaches and limits requirement, backhaul oil circuit in first jack controls stripper plate and is clamp-oned by work clip sheet in work ground tackle, with work clip sheet by externally cable firmly anchoring.Therefore, the utility model can effectively prevent work clip sheet and externally cable not all to be damaged when stretch-draw.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, for those of ordinary skills, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 shows the structural representation of existing pre-stress stretching device;
Fig. 2 shows the structural representation as the pre-stress stretching device of preferred embodiment in the utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, carry out clear, complete description to the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 2 shows the structural representation as the pre-stress stretching device of preferred embodiment in the utility model.As shown in Figure 2, pre-stress stretching device comprises cross-under and restraints anchor plate 2 on 1, work ground tackle 3, work clip sheet 4, supplementary anchorage assembly and the stretch-draw assembly for externally cable described in stretch-draw in vitro.Anchor plate 2, work ground tackle 3, work clip sheet 4, supplementary anchorage assembly and stretch-draw assembly set gradually along externally cable axis direction.Anchor plate 2 is fixed on engineering structures part.Work ground tackle 3 is fixed on anchor plate 2.Before stretch-draw component operation or in the course of work, the part in work clip sheet 4 is embedded in work ground tackle 3.Preferably, before stretch-draw assembly carries out stretch-draw or in stretching process, the length in described work clip sheet embedding work ground tackle is 1/4 ~ 1/3 of work clip sheet total length.Stretch-draw assembly is used for carrying out stretch-draw to externally cable.
Supplementary anchorage assembly comprises the first jack 6.The first end of the first jack is provided with stripper plate 5, and the compressive plane of this stripper plate contacts with work clip sheet; Second end of the first jack is fixed with the first instrument ground tackle 7 and the first tool clamping piece 8.The externally cable 1 passed by work clip sheet 4 to enter in stretch-draw assembly and by the anchoring of stretch-draw assembly after stripper plate 5, first instrument ground tackle 7 and the first tool clamping piece 8 pass.In this application, the effect of stripper plate has two: at stretch-draw assembly when carrying out stretch-draw to externally cable, moves for limiting work clip sheet; After terminating the stretch-draw of externally cable, for extruding work clip sheet under the effect of the first jack backhaul oil circuit, work clip sheet is penetrated, and columniform cavity diameter that work ground tackle back wall becomes diminishes, with anchoring body external beam preferably.
Preferably, the first end of the first jack is provided with the first groove, and the first jack is fastened in the end of work ground tackle by the first groove.
Preferably, have the circumferential storage tank 13 along the first jack axis direction with certain length at the inner surface near first end in the first jack, the edge of stripper plate is embedded in circumferential storage tank 13.Stripper plate moves and stops that when work clip sheet is clamp-oned in work ground tackle by stripper plate stripper plate continues to move in circumferential storage tank.
Preferably, the stretch-draw assembly in the utility model comprises the second jack 10, second instrument ground tackle 11 and the second tool clamping piece 12.Second end of the second jack 10 is fixed the second instrument ground tackle 11, second tool clamping piece 12 and is fixed on the second instrument ground tackle 11.The first end of the second jack is provided with the second groove of accommodating first tool clamping piece.Wherein, the one end near the first jack in the second jack is first end, and the one end away from the first jack is the second end.The stretch-draw oil circuit of the first jack is parallel with the stretch-draw oil circuit of the second jack but the direction of motion is contrary.
Further, between the first tool clamping piece and the second groove of the second jack, limiting plate 9 is also provided with.The first end of limiting plate 9 is provided with the 3rd groove and the 4th groove, and the 3rd groove makes limiting plate be fastened on the first instrument ground tackle, and the first tool clamping piece is placed in the 4th groove.In second end end face of limiting plate and the second jack, the bottom surface of the second groove is affixed.First work clip sheet is limited in the 4th groove by acting as of limiting plate herein, passes by the first instrument ground tackle to prevent the first work clip sheet.
Work clip sheet 4 in the utility model is jointly stressed with work ground tackle 3 after stretch-draw terminates, and staying after stretch-draw on ground tackle, is permanent use material.First tool clamping piece 7 and the second tool clamping piece 8 in vitro Shu Jinhang stretch-draw time, the instrument ground tackle penetrated with it is respectively jointly stressed, namely the first tool clamping piece and first ground tackle that works is jointly stressed, second tool clamping piece and second ground tackle that works is jointly stressed, can take off after stretch-draw, the first tool clamping piece and the second tool clamping piece reusable.
Preferably, as the preferred embodiment in each embodiment, the work clip sheet in the utility model selects truncated cone-shaped, the work clip sheet be made up of three slices points of intermediate plates.The contact surface of work clip sheet and externally cable has pawl shape screw thread, and work clip sheet has elastic groove.
First tool clamping piece and the second tool clamping piece all select truncated cone-shaped and the tool clamping piece be made up of three slices points of intermediate plates.The contact surface of the first tool clamping piece and the second tool clamping piece and externally cable all has saw-tooth thread.
Below the course of work of the present utility model is described in detail.
The second jack pair externally cable is utilized to carry out integral tension.When second jack carries out stretch-draw by stretch-draw oil circuit to externally cable, the second tool clamping piece clamping body external beam, therefore the second tool clamping piece is in stress, and the effect that work clip sheet and the first tool clamping piece are not subject to stress owing to not needing to step up externally cable.Completing tentioning stroke at the second jack carries out in return stroke, and the first jack is in tentioning stroke, and therefore the first tool clamping piece is in stress, and the second tool clamping piece is not by the effect of stress.
When a stretch-draw bout of the second jack can not meet stretch-draw require time, need to carry out stretch-draw and fall top until stretching force meets the requirements.When utilizing the second jack to carry out stretch-draw, when the course of work and above-mentioned second jack carry out the first stretch-draw, the course of work is identical, just when the second jack carries out backhaul, the second tool clamping piece need use pipe to carry out fastening to the second instrument ground tackle and the second tool clamping piece; Repeat stretch-draw is until the stretching force of externally cable reaches design stretching force.After design stretching force reaches designing requirement, utilize the stretch-draw oil circuit of the first jack to control stripper plate and work clip sheet is extruded, until work clip sheet is by externally cable anchoring.
When the oil meter reading of the first jack increases suddenly; stripper plate extruding work clip sheet; when making the epoxy resin topping of its incrustate external beam and tightly contact with the steel wire in externally cable, now should stop the pump of the first jack oil immediately and slowly oil return is counter pushes up, make stripper plate return.The slow oil return of second jack is subsequently counter pushes up, and makes work clip sheet strengthen the stress of applying gradually to externally cable, carries out high-quality anchoring.After anchoring body external beam, tighten the locked work clip sheet of screw of work ground tackle, complete whole anchoring work.
From above technical scheme, when stretch-draw assembly in the utility model carries out stretch-draw to externally cable, work clip sheet in vitro Shu Yidong time and externally cable can not produce frictional force, after the stretching force restrainted in vitro reaches and limits requirement, backhaul oil circuit in first jack controls stripper plate and is all clamp-oned by work clip sheet in work ground tackle, with work clip sheet by externally cable firmly anchoring.Therefore, the utility model can effectively prevent work clip sheet and externally cable not all to be damaged when stretch-draw.
Above-described the utility model embodiment, does not form the restriction to the utility model protection domain.Any do within spirit of the present utility model and principle amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a pre-stress stretching device, comprise the anchor plate set gradually along externally cable axis direction, the work ground tackle be fixed on anchor plate, be partly embedded in the work clip sheet in work ground tackle and the stretch-draw assembly for externally cable described in stretch-draw, it is characterized in that, be also provided with between described work clip sheet and stretch-draw assembly: supplementary anchorage assembly;
Described supplementary anchorage assembly comprises the first jack; The first end of the first jack is provided with stripper plate, and the compressive plane of this stripper plate contacts with described work clip sheet, and the second end of the first jack is fixed with the first instrument ground tackle and the first tool clamping piece; The externally cable passed by described work clip sheet to enter in described stretch-draw assembly and by the anchoring of described stretch-draw assembly after stripper plate, the first instrument ground tackle and the first tool clamping piece pass;
When described stretch-draw assembly carries out stretch-draw to described externally cable, the first tool clamping piece produces frictional force when described externally cable moves, and described work clip sheet does not produce frictional force when described externally cable moves; After the stretching force restrainted in vitro reaches and limits requirement, the backhaul oil circuit in the first jack controls stripper plate and is all clamp-oned by described work clip sheet in described work ground tackle, to make described work clip sheet by externally cable anchoring.
2. pre-stress stretching device according to claim 1, it is characterized in that, inner surface near first end in first jack has the circumferential storage tank along the first jack axis direction with certain length, the edge of described stripper plate is embedded in described circumferential storage tank, and described stripper plate moves and stops that when described work clip sheet is clamp-oned in described work ground tackle by described stripper plate described stripper plate continues to move in described circumferential storage tank.
3. pre-stress stretching device according to claim 1, is characterized in that, the first end of the first jack is provided with the first groove, and the first jack is fastened in the end of described work ground tackle by the first groove.
4. pre-stress stretching device according to claim 1, is characterized in that, before described stretch-draw assembly carries out stretch-draw or when carrying out stretch-draw, the length in described work clip sheet embedding work ground tackle is 1/4 ~ 1/3 of described work clip sheet total length.
5., according to described pre-stress stretching device arbitrary in Claims 1-4, it is characterized in that, described stretch-draw assembly comprises the second jack, the second instrument ground tackle and the second tool clamping piece;
Second end of the second jack fixes the second instrument ground tackle, and the second tool clamping piece is fixed on the second instrument ground tackle; The first end of the second jack is provided with the second groove of accommodating first instrument ground tackle; Wherein, the one end near the first jack in the second jack is first end, and the one end away from the first jack is the second end;
The stretch-draw oil circuit of the first jack is parallel with the stretch-draw oil circuit of the second jack but the direction of motion is contrary.
6. according to the pre-stress stretching device described in claim 5, it is characterized in that, be provided with between the first tool clamping piece and the second groove of the second jack: limiting plate,
The first end of described limiting plate is provided with the 3rd groove and the 4th groove, and the 3rd groove makes described limiting plate be fastened on the first instrument ground tackle, and the first tool clamping piece is placed in the 4th groove; In second end end face of described limiting plate and the second jack, the bottom surface of the second groove is affixed.
7. pre-stress stretching device according to claim 5, is characterized in that, described work clip sheet is truncated cone-shaped, is made up of three slices points of intermediate plates, and the contact surface of described work clip sheet and externally cable has pawl shape screw thread, and described work clip sheet has elastic groove.
8. pre-stress stretching device according to claim 5, it is characterized in that, described first tool clamping piece and the second tool clamping piece are truncated cone-shaped, the tool clamping piece be made up of three slices points of intermediate plates, and the contact surface of the first tool clamping piece and the second tool clamping piece and externally cable all has saw-tooth thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420403007.3U CN204081520U (en) | 2014-07-21 | 2014-07-21 | Pre-stress stretching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420403007.3U CN204081520U (en) | 2014-07-21 | 2014-07-21 | Pre-stress stretching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204081520U true CN204081520U (en) | 2015-01-07 |
Family
ID=52174253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420403007.3U Expired - Fee Related CN204081520U (en) | 2014-07-21 | 2014-07-21 | Pre-stress stretching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204081520U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235272A (en) * | 2018-10-18 | 2019-01-18 | 江苏燕宁工程科技集团有限公司 | Anti-skidding stretch-draw jack |
| CN111139824A (en) * | 2020-01-16 | 2020-05-12 | 华侨大学 | Device for anchor rod prestress nondestructive tensioning and tensioning method thereof |
| CN112318926A (en) * | 2020-10-15 | 2021-02-05 | 中冶重工（唐山）有限公司 | Zipper type pre-tightening device and method for hydraulic machine |
| CN112356262A (en) * | 2020-09-28 | 2021-02-12 | 广东博智林机器人有限公司 | Stretch-draw machine and prefab production line |
| CN113512950A (en) * | 2021-05-13 | 2021-10-19 | 开封强力集团锚固技术股份有限公司 | Hydraulic clamping device for adjusting tension degree of steel strand and using method thereof |
-
2014
- 2014-07-21 CN CN201420403007.3U patent/CN204081520U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235272A (en) * | 2018-10-18 | 2019-01-18 | 江苏燕宁工程科技集团有限公司 | Anti-skidding stretch-draw jack |
| CN111139824A (en) * | 2020-01-16 | 2020-05-12 | 华侨大学 | Device for anchor rod prestress nondestructive tensioning and tensioning method thereof |
| CN112356262A (en) * | 2020-09-28 | 2021-02-12 | 广东博智林机器人有限公司 | Stretch-draw machine and prefab production line |
| CN112318926A (en) * | 2020-10-15 | 2021-02-05 | 中冶重工（唐山）有限公司 | Zipper type pre-tightening device and method for hydraulic machine |
| CN113512950A (en) * | 2021-05-13 | 2021-10-19 | 开封强力集团锚固技术股份有限公司 | Hydraulic clamping device for adjusting tension degree of steel strand and using method thereof |
| CN113512950B (en) * | 2021-05-13 | 2023-03-14 | 开封强力集团锚固技术股份有限公司 | Hydraulic clamping device for adjusting tension of steel strand and using method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204081520U (en) | Pre-stress stretching device | |
| CN101235663A (en) | Clip type anchorage applying to carbon fiber reinforced polymeric material prestressing force rib | |
| US10106983B2 (en) | Wedge for post tensioning tendon | |
| WO2009152412A3 (en) | Anchoring, splicing and tensioning elongated reinforcement members | |
| CA2976625A1 (en) | End fixing structure of composite wire rod | |
| CN105888277A (en) | Pre-stressing carbon fiber cloth reinforcement reinforced concrete column construction method | |
| US11268280B2 (en) | Anchorage of continuous fiber-reinforced polymer strands | |
| CN212376149U (en) | Connector for connecting unbonded prestressed steel strands in post-cast strip | |
| CA2808110C (en) | Device for introducing a force into tension members made of fiber-reinforced plastic flat strip lamellas | |
| CN107268459B (en) | Construction method for prestressed fiber cloth reinforced concrete pier column | |
| CN107724258B (en) | Prestressing force carbon fiber stretching device | |
| CN203065973U (en) | Stretch-draw device for monofilament epoxy coating steel strands | |
| CN114215275A (en) | Prestressed concrete structure | |
| CN109444030A (en) | FRP plate material/sheet material the corrosion testing apparatus and method of self-correction prestressing force angle | |
| CN101864827A (en) | Anchor design of pre-stressed carbon fiber reinforced plastic rib group | |
| CN107503527B (en) | Detachable anchorage device for prestressed carbon fiber plates | |
| CN104690665A (en) | Double-layer jig for fatigue elongation test of ordinary steel bar and prestressed steel bar, as well as mounting technique for double-layer jig | |
| CN203007855U (en) | Stretch-draw anchoring system of pre-stress fiber composite plate | |
| CN111119029A (en) | Low-retraction anchoring device for wedge-shaped prestressed tendons and using method | |
| CN102445385A (en) | Bonding and anchoring device for fiber bar testing and application method thereof | |
| KR200302128Y1 (en) | prestressed preflex steel composite beam possible to retensioning | |
| CN108843040B (en) | Carbon fiber plate inner curved surface clamping type anchorage device | |
| CN107059664B (en) | Rotary self-locking tensioning anchoring device for prestressed fiber cloth | |
| CN214614167U (en) | Steel strand bearing platform pull rod | |
| CN201162311Y (en) | Clip type anchorage used for carbon fiber reinforced polymeric material pre-stress tendon |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20190721 |