CN202936136U - Automatic tensioning device for traction steel wire rope of crane - Google Patents
Automatic tensioning device for traction steel wire rope of crane Download PDFInfo
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- CN202936136U CN202936136U CN 201220597628 CN201220597628U CN202936136U CN 202936136 U CN202936136 U CN 202936136U CN 201220597628 CN201220597628 CN 201220597628 CN 201220597628 U CN201220597628 U CN 201220597628U CN 202936136 U CN202936136 U CN 202936136U
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Abstract
The utility model discloses an automatic tensioning device for a traction steel wire rope of a crane. The automatic tensioning device comprises a support plate, a spring positioning device, a shaft A, a shaft B, an upper pawl, a lower pawl, an upper ratchet wheel, a lower ratchet wheel, a rope rolling wheel and a cone nut, wherein the cone nut is fixed at the top end of the shaft A, a slide bushing A is arranged at a connecting part of the shaft A and an upper support plate, and a slide bushing B is arranged at the connecting part of the shaft A and a lower support plate; the upper end surface and the lower end surface of the upper ratchet wheel are respectively provided with a skidding pad A and fixedly connected with the shaft A through a bond, the rope rolling wheel is fixed on the upper end surface of the lower ratchet wheel through the combining of a bolt, a skidding pad C is arranged on the lower end surface of the lower ratchet wheel, a volute spiral spring is fixed in the cavity of the rope rolling wheel through a positioning pin, and the other end of the volute spiral spring is fixedly connected with the shaft A. The unidirectional transmission and automatic tensioning functions of the device are realized by a ratchet wheel and pawl mechanism, volute spiral springs, cylindrical springs and the like through the technical scheme; and meanwhile, the device is high in safety and reliability and convenient to operate.
Description
Technical field
The utility model relates to for the hoisting crane trailer coupling, is specially adapted to have the automatic steel wire rope tension device of the traction mechanism for crane trolley of steel rope automatic tensioning function requirement.
Background technology
The operating unit of conventional hoist can't be arranged together with running trolley the time, adopts the form of rope traction when occurring that the operation driver train is subjected to the actual condition restriction usually.But the steel wire rope stretching device that the conventional hoist trailer coupling is equipped with can't carry out auto-tensioning, and adjusts inconvenient.
Particularly in some special use occasions such as nuclear stations, existing hoisting crane trailer coupling steel wire rope stretching device because of can't auto-tensioning and adjust the problems of being inconvenient to cause, seems particularly outstanding.
Therefore, develop a kind of safe, hoisting crane trailer coupling automatic steel wire rope tension device that reliability is high and easy to operate, for having become technical barrier anxious to be resolved.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of by adopting ratchet and pawl arrangement, and volute spiral spring and cylindrical spring etc., single-direction transmission and the automatic tensioning function of this device have been realized, have simultaneously high security and high reliability, easy to operate, thoroughly solved the existing problem of prior art.
For reaching above purpose, be achieved through the following technical solutions:
A kind of hoisting crane haulage cable automatic takeup comprises: stay bearing plate, spring-positioning device, axle A, axle B, upper ratchet, lower ratchet, upper ratchet, bottom ratchet wheel, bull wheel and vertex of a cone nut; Stay bearing plate is comprised of upper backup pad and lower supporting plate, and upper backup pad and lower supporting plate are processed with the axis hole for installation shaft A and axle B; Close by bolt group handle between stay bearing plate and stay bearing plate; Vertex of a cone nut is fixed on axle A top by pin; Axle A and upper mounted panel junction are provided with sliding sleeve A, are provided with sliding sleeve C with the lower supporting plate junction; Upper ratchet, bull wheel and bottom ratchet wheel are nested with successively on axle A, and are positioned at upper backup pad and lower supporting plate interval; Upper ratchet upper surface and lower surface are provided with skidding A, and are connected and fixed by key and axle A; Bull wheel coordinates by bolt A, nut A and packing ring A and is fixed on the bottom ratchet wheel upper surface closing; The bottom ratchet wheel lower surface is provided with skidding C; The bull wheel center is processed with cavity; Be fixed with volute spiral spring by locating dowel pin in the cavity of bull wheel, and the volute spiral spring other end is connected and fixed by slotted hole and the axle A of processing on axle A; The bull wheel outer wall is processed with for the fixing pyriform hole of steel rope;
Axle B is installed in the corresponding axis hole of stay bearing plate, and is detachably to captive joint with stay bearing plate; Upper ratchet and lower ratchet are nested with on axle B, and are positioned at upper backup pad and lower supporting plate interval; Be provided with spacer between upper ratchet and lower ratchet; The upper and lower end face of upper ratchet and lower ratchet is provided with skidding B; Upper ratchet and lower ratchet and axle B junction are provided with sliding sleeve B;
Upper ratchet center and upper ratchet center in the same horizontal line, and upper ratchet can coordinate clamping with the external tooth of upper ratchet; Lower ratchet center and bottom ratchet wheel center in the same horizontal line, and lower ratchet can coordinate with the external tooth of bottom ratchet wheel clamping;
Upper backup pad lower surface and lower supporting plate upper surface are fixed with for the upper ratchet of restriction and the lower ratchet spring-positioning device around the axle B anglec of rotation;
Spring-positioning device comprises: perpendicular to adapter plate, bolt B, stop screw, stop nut and the cylindrical spring of upper backup pad lower surface and lower mounted panel upper surface; Two place's adapter plates are connected and fixed with upper ratchet and lower ratchet respectively by two bolt B, and are equipped with respectively cylindrical spring on two bolt B; Two place's adapter plates are provided with and are respectively used to limit ratchet and lower ratchet around two stop screws of the axle B anglec of rotation, and two stop screws control by spacing two stop nuts the length that stop screw stretches out in adapter plate;
Be used for the bolt group of close stay bearing plate and lower supporting plate is comprised, band shoulder double end stud, take on the double end stud screw thread with band and join individual nut C and be arranged at nut C and contact the packing ring C of end face with two stay bearing plates.
The pyriform hole number of bull wheel outer wall is no less than 2; When the utility model two steel ropes of hoisting crane in use, steel rope A and steel rope B the sling B of the sling A by steel rope A end and steel rope B end respectively are connected to respectively in two pyriform holes;
Axle B lower end is connected to axis hole position, lower supporting plate lower surface, and the upper end is fixed by nut B and upper backup pad upper surface, and nut B and upper backup pad contact position are provided with packing ring;
A kind of hoisting crane installation method of haulage cable automatic takeup, control step is as follows:
Step 1:
Four band shoulder double end studs are arranged on lower supporting plate, four groups of nut C and packing ring C are installed successively;
Step 2:
On lower supporting plate, sliding sleeve C and skidding C are installed, axle A is penetrated from bottom to top, by bolt A, nut A and packing ring A, bottom ratchet wheel and bull wheel are fixed together, be arranged on afterwards on axle A, volute spiral spring is installed, axle A is provided with slotted hole, the inner termination that is used for the fixed scroll spring, the external end head of volute spiral spring is fixed by locating dowel pin, and skidding A is installed in being fixed on bull wheel of locating dowel pin, and locate by the step of axle A, install afterwards the skidding A on ratchet, key and top;
Step 3:
Axle B is passed lower supporting plate, skidding B, sliding sleeve B, lower ratchet, skidding B, spacer, skidding B, sliding sleeve B, upper ratchet and skidding B are installed afterwards successively, sliding sleeve A is arranged on upper backup pad, be arranged on together afterwards the upper end of axle A, axle B and four band shoulder double end studs with upper backup pad, be fixed by four groups of nut C and packing ring C, vertex of a cone nut is arranged on the upper end of axle A, and by pin, vertex of a cone nut and axle A is fixed together, successively packing ring B and nut B are arranged on axle B end;
Step 4:
Two adapter plates are welded on respectively position corresponding with upper ratchet and lower ratchet on stay bearing plate, afterwards, cylindrical spring, bolt B, stop screw and stop nut are installed, and are adjusted to respectively correct position;
Step 5:
Sling A is fixed on the end of steel rope A, and sling B is fixed on the end of steel rope B, and sling A and sling B are passed respectively the macropore in pyriform hole, bull wheel both sides, and is fixed on the aperture place.
Adopted the invention of technique scheme in use, by rotating counterclockwise vertex of a cone nut, driven successively upper ratchet and volute spiral spring inner termination and rotate, thereby make volute spiral spring curling, and with this torque storage.Upper ratchet coordinates with upper ratchet, prevents the ratchet backward rotation, and stop screw and nut C play the secure localization effect; Afterwards, the outer end of volute spiral spring drives bull wheel by locating dowel pin and bottom ratchet wheel rotates in the counterclockwise direction, and lower ratchet coordinates with bottom ratchet wheel, prevent bottom ratchet wheel and bull wheel backward rotation, simultaneously, bull wheel drives steel rope A and steel rope B is wound around on bull wheel, realizes the tensioning of steel rope.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification sheets, and for above and other purpose of the present utility model, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
Description of drawings
Fig. 1 is main TV structure schematic diagram of the present utility model.
Fig. 2 is A-A cross-sectional view of the present utility model.
Fig. 3 is B-B cross-sectional view of the present utility model.
Fig. 4 is C-C cross-sectional view of the present utility model.
Fig. 5 is D-D cross-sectional view of the present utility model.
Fig. 6 is the main TV structure schematic diagram of the utility model spring-positioning device.
Fig. 7 is the E-E cross-sectional view of the utility model spring inhibiting device.
The specific embodiment
, comprising: stay bearing plate 1, spring-positioning device 2, axle A3, axle B4, upper ratchet 5, lower ratchet 6, upper ratchet 7, bottom ratchet wheel 8, bull wheel 9 and vertex of a cone nut 10 to a kind of hoisting crane haulage cable automatic takeup shown in Figure 7 as Fig. 1; Stay bearing plate 1 is comprised of upper backup pad 1.1 and lower supporting plate 1.2, and upper backup pad 1.1 and lower supporting plate 1.2 are processed with the axis hole for installation shaft A3 and axle B4; Close by bolt group handle between stay bearing plate 1.1 and stay bearing plate 1.2; Vertex of a cone nut 10 is fixed on axle A3 top by pin 11; Axle A3 and upper mounted panel 1.1 junctions are provided with sliding sleeve A12, are provided with sliding sleeve C31 with lower supporting plate 1.2 junctions; Upper ratchet 7, bull wheel 9 and bottom ratchet wheel 8 are nested with successively on axle A3, and are positioned at upper backup pad 1.1 and lower supporting plate 1.2 intervals; Upper ratchet 7 upper surfaces and lower surface are provided with skidding A13, and are connected and fixed with axle A3 by key 27; Bull wheel 9 coordinates by bolt A16, nut A17 and packing ring A18 and is fixed on bottom ratchet wheel 8 upper surfaces closing; Bottom ratchet wheel 8 lower surfaces are provided with skidding C30; Bull wheel 9 centers are processed with cavity; Be fixed with volute spiral spring 15 by locating dowel pin 14 in the cavity of bull wheel 9, and volute spiral spring 15 other ends are connected and fixed with axle A3 by the slotted hole 29 of processing on axle A3; Bull wheel 9 outer walls are processed with the pyriform hole 28 for fixing steel rope;
Axle B4 is installed in the corresponding axis hole of stay bearing plate 1, and captives joint for detachable with stay bearing plate 1; Upper ratchet 5 and lower ratchet 6 are nested with on axle B4, and are positioned at upper backup pad 1.1 and lower supporting plate 1.2 intervals; Be provided with spacer 35 between upper ratchet 5 and lower ratchet 6; The upper and lower end face of upper ratchet 5 and lower ratchet 6 is provided with skidding B21; Upper ratchet 5 and lower ratchet 6 is provided with sliding sleeve B22 with axle B4 junction; Upper ratchet 5 centers and upper ratchet 7 centers in the same horizontal line, and upper ratchet 5 can coordinate clamping with the external tooth of upper ratchet 7; Lower ratchet 6 centers and bottom ratchet wheel 8 centers in the same horizontal line, and lower ratchet 6 can coordinate clamping as shown in Figure 3 with the external tooth of bottom ratchet wheel 8;
Upper backup pad 1.1 lower surfaces and lower support version 1.2 upper surfaces are fixed with for the upper ratchet 5 of restriction and lower ratchet 6 around the spring-positioning device 2 of the axle B4 anglec of rotation as shown in Figure 4;
Spring-positioning device 2 comprises: perpendicular to adapter plate 2.1, bolt B 2.2, stop screw 2.3, stop nut 2.4 and the cylindrical spring 2.5 of upper backup pad 1.1 lower surfaces and lower supporting plate 1.2 upper surfaces; Two place's adapter plates 2.1 are connected and fixed with upper ratchet 5 and lower ratchet 6 respectively by two bolt B 2.2, and are equipped with respectively cylindrical spring 2.5 on two bolt B 2.2; Two place's adapter plates 2.1 are provided with and are respectively used to limit ratchet 5 and lower ratchet 6 around two stop screws 2.3 of the axle B4 anglec of rotation, and two stop screws 2.3 are controlled stop screws 2.3 by spacing two stop nuts 2.4 and stretched out in the length of adapter plate 2.1 such as Fig. 4 to shown in Figure 7;
Be used for the bolt group of stay bearing plate 1.1 with lower supporting plate 1.2 of closing comprised, band shoulder double end stud 32, join individual nut C33 and be arranged at nut C33 contacts end face with two stay bearing plates 1 packing ring C34 as shown in Figure 1 with band shoulder double end stud 32 screw threads;
Axle B4 lower end is connected to lower supporting plate 1.2 axis hole positions, lower surface, and the upper end is fixed by nut B19 and upper backup pad 1.1 upper surfaces, and nut B19 and upper backup pad 1.1 contact positions are provided with packing ring 20;
A kind of hoisting crane installation method of haulage cable automatic takeup, control step is as follows:
Step 1:
Four band shoulder double end studs 32 are arranged on lower supporting plate 1.2, four groups of nut C33 and packing ring C34 are installed successively;
Step 2:
On lower supporting plate 1.2, sliding sleeve C31 and skidding C30 are installed, axle A3 is penetrated from bottom to top.By bolt A16, nut A17 and packing ring A18, bottom ratchet wheel 8 and bull wheel 9 are fixed together, are arranged on afterwards on axle A3.Volute spiral spring 15 is installed, and axle A3 is provided with slotted hole 29, is used for the inner termination of fixed scroll spring 15, and the external end head of volute spiral spring 15 is fixing by locating dowel pin 14, being fixed on bull wheel 9 of locating dowel pin 14.Skidding A13 is installed, and locates by the step of axle A3, install afterwards the skidding A13 on ratchet 7, key 27 and top;
Step 3:
Axle B4 is passed lower supporting plate 1.2, skidding B21, sliding sleeve B22, lower ratchet 6, skidding B21, spacer 35, skidding B21, sliding sleeve B22, upper ratchet 5 and skidding B21 are installed afterwards successively.Sliding sleeve A12 is arranged on upper backup pad 1.1, is arranged on together afterwards the upper end of axle A3, axle B4 and four band shoulder double end studs 32 with upper backup pad 1, be fixed by four groups of nut C33 and packing ring C34.Vertex of a cone nut 10 is arranged on the upper end of axle A3, and by pin 11, vertex of a cone nut 10 and axle A3 is fixed together.Successively packing ring B20 and nut B19 are arranged on axle B4 end;
Step 4:
Two adapter plates 2.1 are welded on respectively position corresponding with upper ratchet 5 and lower ratchet 6 on stay bearing plate 1, afterwards, cylindrical spring 2.5, bolt B 2.2, stop screw 2.3 and stop nut C2.4 are installed, and adjust to respectively correct position;
Step 5:
Sling A24 is fixed on the end of steel rope A23, and sling B26 is fixed on the end of steel rope B25, and sling A24 and sling B26 are passed respectively the macropore in bull wheel 9 pyriform holes, both sides 28, and is fixed on the aperture place;
The invention that the utility model has adopted technique scheme by rotating counterclockwise vertex of a cone nut 10, drives successively upper ratchet 7 and volute spiral spring 15 inner termination are rotated, thereby makes volute spiral spring 15 curling in use, and with this torque storage.Upper ratchet 5 coordinates with upper ratchet 7, prevents ratchet 7 backward rotation, and stop screw 2.3 and nut C play the secure localization effect; Afterwards, the outer end of volute spiral spring 15 drives bull wheel 9 by locating dowel pin 14 and bottom ratchet wheel 8 rotates in the counterclockwise direction, lower ratchet 6 coordinates with bottom ratchet wheel 8, prevent bottom ratchet wheel 8 and bull wheel 9 backward rotation, simultaneously, bull wheel 9 drives steel rope A23 and steel rope B25 is wound around on bull wheel 9, realizes the tensioning of steel rope.
the above, it is only preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet be not to limit the utility model, any those skilled in the art are not within breaking away from the technical solutions of the utility model scope, appeal when utilizing the equivalent embodiment that the technology contents that discloses is made a little change or is modified to equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, foundation technical spirit of the present utility model is to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (4)
1. a hoisting crane haulage cable automatic takeup, is characterized in that: comprise stay bearing plate (1), spring-positioning device (2), axle A(3), axle B(4), upper ratchet (5), lower ratchet (6), upper ratchet (7), bottom ratchet wheel (8), bull wheel (9) and vertex of a cone nut (10); Described stay bearing plate (1) is comprised of upper backup pad (1.1) and lower supporting plate (1.2), and described upper backup pad (1.1) and lower supporting plate (1.2) are processed with for installation shaft A(3) and axle B(4) axis hole; Close by bolt group handle between described upper backup pad (1.1) and lower supporting plate (1.2); Described vertex of a cone nut (10) is fixed on axle A(3 by pin (11)) top; Described axle A(3) be provided with sliding sleeve A(12 with upper mounted panel (1.1) junction), be provided with sliding sleeve C(31 with lower supporting plate (1.2) junction); Described upper ratchet (7), bull wheel (9) and bottom ratchet wheel (8) are nested with successively at axle A(3) on, and be positioned at upper backup pad (1.1) and lower supporting plate (1.2) interval; Described upper ratchet (7) upper surface and lower surface are provided with skidding (13), and by key (27) and axle A(3) be connected and fixed; Described bull wheel (9) is by bolt A(16), nut A(17) and packing ring A(18) coordinate and to be fixed on bottom ratchet wheel (8) upper surface closing; Described bottom ratchet wheel (8) lower surface is provided with skidding C(30); Described bull wheel (9) center is processed with cavity; Is fixed with volute spiral spring (15) by locating dowel pin (14) in the cavity of described bull wheel (9), and described volute spiral spring (15) other end is by processing at axle A(3) on slotted hole (29) and axle A(3) be connected and fixed; Described bull wheel (9) outer wall is processed with for the fixing pyriform hole (28) of steel rope;
Described axle B(4) be installed in the corresponding axis hole of stay bearing plate (1), and captive joint for detachable with stay bearing plate (1); Described upper ratchet (5) and lower ratchet (6) are nested with at axle B(4) on, and be positioned at upper backup pad (1.1) and lower supporting plate (1.2) interval; Be provided with spacer (35) between described upper ratchet (5) and lower ratchet (6); The upper and lower end face of described upper ratchet (5) and lower ratchet (6) is provided with skidding B(21); Described upper ratchet (5) and lower ratchet (6) and axle B(4) junction is provided with sliding sleeve B(22);
Described upper ratchet (5) center and upper ratchet (7) center in the same horizontal line, and upper ratchet (5) can coordinate clamping with the external tooth of upper ratchet (7); Described lower ratchet (6) center and bottom ratchet wheel (8) center in the same horizontal line, and lower ratchet (6) can coordinate with the external tooth of bottom ratchet wheel (8) clamping;
Described upper backup pad (1.1) lower surface and lower supporting plate (1.2) upper surface are fixed with for the upper ratchet (5) of restriction and lower ratchet (6) around axle B(4) spring-positioning device (2) of the anglec of rotation;
Described spring-positioning device (2) comprising: perpendicular to adapter plate (2.1), bolt B (2.2), stop screw (2.3), stop nut (2.4) and the cylindrical spring (2.5) of upper backup pad (1.1) lower surface and lower mounted panel (1.2) upper surface; Described two place's adapter plates (2.1) are connected and fixed with upper ratchet (5) and lower ratchet (6) respectively by two bolt B (2.2), and are equipped with respectively cylindrical spring (2.5) on two bolt B (2.2); Described two place's adapter plates (2.1) are provided with and are respectively used to limit ratchet (5) and lower ratchet (6) around axle B(4) two stop screws (2.3) of the anglec of rotation, and described two stop screws (2.3) control by spacing two stop nuts (2.4) length that stop screws (2.3) stretch out in adapter plate (2.1).
2. a kind of hoisting crane haulage cable automatic takeup according to claim 1, it is characterized in that: described for the bolt group of close stay bearing plate (1.1) and lower supporting plate (1.2) is comprised, band shoulder double end stud (32), join individual nut C(33 with band shoulder double end stud (32) screw thread) be arranged at nut C(33) contact the packing ring C(34 of end face with two stay bearing plates (1)).
3. a kind of hoisting crane haulage cable automatic takeup according to claim 1, it is characterized in that: pyriform hole (28) quantity of described bull wheel (9) outer wall is no less than 2; As the utility model two steel ropes of hoisting crane in use, steel rope A(23) and steel rope B(25) respectively by steel rope A(23) the sling A(24 of end) and steel rope B(25) the sling B(26 of end) be connected to respectively in two pyriform holes (28).
4. a kind of hoisting crane haulage cable automatic takeup according to claim 1, it is characterized in that: described axle B(4) lower end is connected to axis hole position, lower supporting plate (1.2) lower surface, the upper end is by nut B(19) fix with upper backup pad (1.1) upper surface, and described nut B(19) be provided with packing ring (20) with upper backup pad (1.1) contact position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220597628 CN202936136U (en) | 2012-11-13 | 2012-11-13 | Automatic tensioning device for traction steel wire rope of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220597628 CN202936136U (en) | 2012-11-13 | 2012-11-13 | Automatic tensioning device for traction steel wire rope of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202936136U true CN202936136U (en) | 2013-05-15 |
Family
ID=48320388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220597628 Withdrawn - After Issue CN202936136U (en) | 2012-11-13 | 2012-11-13 | Automatic tensioning device for traction steel wire rope of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202936136U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923604A (en) * | 2012-11-13 | 2013-02-13 | 大连华锐重工集团股份有限公司 | Load cable automatic tensioning device for crane and installation method thereof |
| CN104843604A (en) * | 2015-04-08 | 2015-08-19 | 山东建筑大学 | Crane winding device with steel wire rope straining mechanism |
| CN113772571A (en) * | 2021-09-14 | 2021-12-10 | 南京北路智控科技股份有限公司 | Steel wire rope traction device |
-
2012
- 2012-11-13 CN CN 201220597628 patent/CN202936136U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923604A (en) * | 2012-11-13 | 2013-02-13 | 大连华锐重工集团股份有限公司 | Load cable automatic tensioning device for crane and installation method thereof |
| CN102923604B (en) * | 2012-11-13 | 2015-07-22 | 大连华锐重工集团股份有限公司 | Load cable automatic tensioning device for crane and installation method thereof |
| CN104843604A (en) * | 2015-04-08 | 2015-08-19 | 山东建筑大学 | Crane winding device with steel wire rope straining mechanism |
| CN113772571A (en) * | 2021-09-14 | 2021-12-10 | 南京北路智控科技股份有限公司 | Steel wire rope traction device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130515 Effective date of abandoning: 20150722 |
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| RGAV | Abandon patent right to avoid regrant |