CN201980904U - Horizontal landing leg of crane and crane provided with same - Google Patents
Horizontal landing leg of crane and crane provided with same Download PDFInfo
- Publication number
- CN201980904U CN201980904U CN2010206715607U CN201020671560U CN201980904U CN 201980904 U CN201980904 U CN 201980904U CN 2010206715607 U CN2010206715607 U CN 2010206715607U CN 201020671560 U CN201020671560 U CN 201020671560U CN 201980904 U CN201980904 U CN 201980904U
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- horizontal support
- support legs
- drag chain
- hydraulic actuating
- actuating cylinder
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Abstract
The utility model discloses a horizontal landing leg of a crane and the crane provided with the horizontal landing leg. The horizontal landing leg of the crane comprises a primary horizontal landing leg, a second horizontal landing leg which can extend out of the primary horizontal landing leg, and a hydraulic cylinder and a drag chain which are arranged in the primary horizontal landing leg and the secondary horizontal landing leg; one end of the hydraulic cylinder is connected with the primary horizontal landing leg, and the other end of the hydraulic cylinder is connected with the secondary horizontal landing leg; and a first end of the drag chain is connected with one end of the hydraulic cylinder, a second end of the drag chain is connected with the other end of the hydraulic cylinder, and the end cap of the first end of the drag chain faces to the second end of the drag chain. The utility model further comprises an expansion switch which is arranged on the lateral side of the limit extension position of the first end of the drag chain, and the limit extension quantity of the drag chain in the direction parallel to the axial line of the hydraulic cylinder is equal to the maximum stroke of the hydraulic cylinder. The horizontal landing leg of the crane can avoid influence of the processing technology, and can reliably detect the full-extension state of the secondary horizontal landing leg. The utility model further provides the crane with the horizontal landing leg.
Description
Technical field
The utility model relates to the weight-lifting equipment technical field, particularly a kind of hoisting crane and horizontal support legs thereof.
Background technology
Hoister in large tonnage need obtain the stability of car load by the support of supporting leg usually when work.The supporting leg of hoisting crane can be divided into fixed supporting leg and horizontal support legs usually; One end of fixed supporting leg is connected with the vehicle frame of hoisting crane, and its other end is connected with horizontal support legs, is used for power is passed to horizontal support legs by vehicle frame; Horizontal support legs can stretch in the horizontal direction, is used to support heavy-duty machine.
For the stability that guarantees that car load supports, hoister in large tonnage generally designs the span of two-stage horizontal support legs with the supporting leg of increase hoisting crane, i.e. one-level horizontal support legs and secondary horizontal support legs.The one-level horizontal support legs can stretch in fixed supporting leg, is used for power is passed to fixed supporting leg, and the secondary horizontal support legs can stretch in the one-level horizontal support legs, is used for power is passed to the one-level horizontal support legs.
During the hoisting crane lifting, supporting leg need be placed the state of stretching entirely, with the stability that guarantees that the chassis is supported.Do not stretch state entirely if supporting leg is in,, have potential safety hazard though hoisting crane also can be operated the lifting action.
At present, the horizontal support legs of hoisting crane is to detect the state of stretching entirely in the following way:
Please refer to Fig. 1, Fig. 1 is in the partial schematic diagram of stretching state entirely for the horizontal support legs of hoisting crane in the prior art, and Fig. 2 is the partial enlarged drawing of Fig. 1.
Be welded with guide rail 03 on the sidewall of secondary horizontal support legs 02, this guide rail 03 is divided into the line part that axially is provided with along secondary horizontal support legs 02, with the curve that is arranged at one-level horizontal support legs 01 coupling end, the bending direction of this curve is the madial wall of one-level horizontal support legs 01 dorsad.On the lateral wall of one-level horizontal support legs 01 and secondary horizontal support legs 02 coupling end, be equipped with and control system bonded assembly limit switch 04, limit switch 04 is provided with telescopic pole, the end of pole is provided with roller, this pole and roller extend into the inside of one-level horizontal support legs 01 from the through hole on the sidewall of one-level horizontal support legs 01, and roller can compress the line part of guide rail 03.
When secondary horizontal support legs 02 began to stretch out, roller rolled on the line part of guide rail 03, and the pole of limit switch 04 is subjected to the extruding of guide rail 03 and is in retracted mode, and this moment, limit switch 04 was in closure state; Curve on roller arrival guide rail 03, pole begins constantly to stretch out, and slides along the slope of this curve; When secondary horizontal support legs 02 reaches when stretching state entirely, pole being in of limit switch 04 stretched out state, and this moment, limit switch 04 was in closure state.In this course, the pole on the limit switch 04 is converted into the state of stretching out by contraction state, and limit switch 04 is also corresponding to be converted into off-state by closure state, can judge according to the change of the state of limit switch 04 whether secondary horizontal support legs 02 is stretched entirely.
In the technique scheme, guide rail 03 is arranged on the secondary horizontal support legs 02, limit switch 04 is arranged on the one-level horizontal support legs 01, by the different contact situations of judgement limit switch 04 with guide rail 03, it also is the different conditions of limit switch 04, the flexible state that reflects secondary horizontal support legs 02, this mode requires strict to the gap between one-level horizontal support legs 01 and the secondary horizontal support legs 02, if actual gap is bigger than design gaps, limit switch 04 will touch guide rail 03, also just can't play detection effect.And in process of producing product, because the restriction of welding process, actual gap is ever-present greater than design gaps.Therefore, it is bigger that the supporting leg of the hoisting crane of this detection mode is influenced by processing technology, and it is unreliable to work.
In addition, in this scheme, limit switch 04 and wire harness thereof all are installed in the supporting leg outside of hoisting crane, in the abominable working environment of hoisting crane, are damaged easily; Electrical part exposes the presentation quality that also can influence complete machine.
The utility model content
First purpose of the present utility model aims to provide a kind of horizontal support legs of hoisting crane, can avoid the influence of processing technology, detects the state of stretching entirely of secondary horizontal support legs reliably.Second purpose of the present utility model aims to provide a kind of hoisting crane that comprises the horizontal support legs of above-described hoisting crane.
For solving the problems of the technologies described above, the utility model provides a kind of horizontal support legs of hoisting crane, comprise one-level horizontal support legs and the secondary horizontal support legs that can from described one-level horizontal support legs, stretch out, and all be arranged at described one-level horizontal support legs and described secondary horizontal support legs in-to-in hydraulic actuating cylinder and drag chain; One end of described hydraulic actuating cylinder is connected with described one-level horizontal support legs, and its other end is connected with described secondary horizontal support legs; First end of described drag chain is connected with an end of described hydraulic actuating cylinder, and second end of described drag chain is connected with the other end of described hydraulic actuating cylinder, and the termination of first end of described drag chain is towards second end of described drag chain; The flexible switch that also comprises the limit extended position side of first end that is arranged at described drag chain; The limit span of described drag chain on the direction parallel with described hydraulic cylinder axis equals the range of described hydraulic actuating cylinder.
Preferably, first end of described drag chain is connected with the cylinder body of described hydraulic actuating cylinder, and second end of described drag chain is connected with the piston end of described hydraulic actuating cylinder.
Preferably, also comprise can ccontaining described drag chain key way, described key way is along on the described cylinder body of being axially set in of described hydraulic actuating cylinder.
Preferably, second end of described drag chain is arranged at the cylinder mouth end of described cylinder body.
Preferably, first end of described key way is arranged at the cylinder mouth end of described cylinder body, and the limit extended position corresponding to described drag chain on the sidewall of described key way offers through hole, and described flexible switch is arranged on the sidewall of described key way, and is positioned at the side of described through hole.
Preferably, the sidewall of described key way is provided with the switch bracket of fixing described flexible switch.
Preferably, the connection lead of described flexible switch is arranged at the inside of described drag chain.
Preferably, the piston end of described hydraulic actuating cylinder is provided with the drag chain support, and first end of described drag chain is connected in the desired location of described drag chain support.
The utility model also provides a kind of hoisting crane, comprise fixed supporting leg and with described fixed supporting leg bonded assembly horizontal support legs, described horizontal support legs is above-described horizontal support legs.
Technique effect of the present utility model is:
The horizontal support legs of the hoisting crane that the utility model provides, on one-level horizontal support legs and secondary horizontal support legs in-to-in hydraulic actuating cylinder, flexible switch is set, the switch that should stretch is arranged at the side of the limit extended position of drag chain, and the limit span of drag chain on the direction parallel with hydraulic cylinder axis equals the range of hydraulic actuating cylinder.
When hydraulic actuating cylinder is in non-ly when stretching the position entirely, the drag chain extruding is arranged at the flexible switch of the limit extended position side of this drag chain, and this flexible switch is in closure state; When hydraulic actuating cylinder stretched out, drag chain stretched together in company with hydraulic actuating cylinder, when hydraulic actuating cylinder reaches when stretching state entirely, the drag chain span that reaches capacity, at this moment, drag chain is rolled from the limit extended position of its first end, therefore drag chain no longer pushes flexible switch, and this flexible switch stretches out, and is changed to off-state.According to the variation of this flexible on off state, can judge promptly whether the secondary horizontal support legs is in and stretch state entirely.
Because the secondary horizontal support legs stretches by hydraulic actuating cylinder, when hydraulic actuating cylinder is in when stretching state entirely, the secondary horizontal support legs promptly is in and stretches state entirely.The supporting leg of the hoisting crane that the utility model provides, by the drag chain with the hydraulic cylinder synchronous motion is set, when detecting drag chain and be in the end position of stretching entirely, hydraulic actuating cylinder also is in the end position of stretching entirely, and then can detect the state of stretching entirely of secondary horizontal support legs.Because drag chain and flexible switch all are arranged on the hydraulic actuating cylinder, have avoided the influence of one-level horizontal support legs and secondary horizontal support legs Mismachining tolerance, can detect the state of stretching entirely of secondary horizontal support legs reliably.
Description of drawings
Fig. 1 is in the partial enlarged drawing of stretching state entirely for the horizontal support legs of hoisting crane in the prior art;
Fig. 2 is the partial enlarged drawing of Fig. 1;
The structural representation of a kind of specific embodiment of the horizontal support legs of the hoisting crane that Fig. 3 provides for the utility model;
The structural representation of hydraulic actuating cylinder part when Fig. 4 is in fully compensated state for the horizontal support legs of hoisting crane in the specific embodiment shown in Figure 3;
Fig. 5 is the partial enlarged drawing of Fig. 4;
Fig. 6 is in the structural representation of hydraulic actuating cylinder part when stretching state entirely for the horizontal support legs of hoisting crane in the specific embodiment shown in Figure 3;
Fig. 7 is the partial enlarged drawing of Fig. 6.
The specific embodiment
First core of the present utility model can be avoided the influence of processing technology for a kind of horizontal support legs of hoisting crane is provided, and detects the state of stretching entirely of secondary horizontal support legs reliably.Second core of the present utility model is for providing a kind of hoisting crane that comprises the horizontal support legs of above-described hoisting crane.
In order to make those skilled in the art understand the technical solution of the utility model better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the structural representation of a kind of specific embodiment of the horizontal support legs of the hoisting crane that Fig. 3 provides for the utility model, the structural representation of hydraulic actuating cylinder part when Fig. 4 is in fully compensated state for the horizontal support legs of hoisting crane in the specific embodiment shown in Figure 3, Fig. 5 is the partial enlarged drawing of Fig. 4, Fig. 6 is in hydraulic actuating cylinder structural representation partly when stretching state entirely for the horizontal support legs of hoisting crane in the specific embodiment shown in Figure 3, and Fig. 7 is the partial enlarged drawing of Fig. 6.
The horizontal support legs of a kind of hoisting crane that the utility model provides comprises one-level horizontal support legs 1 and the secondary horizontal support legs 2 that can stretch out, and is arranged at one-level horizontal support legs 1 and secondary horizontal support legs 2 in-to-in hydraulic actuating cylinders 3 from this one-level horizontal support legs 1; One end of hydraulic actuating cylinder 3 is connected with one-level horizontal support legs 1, and its other end is connected with secondary horizontal support legs 2.The piston end of hydraulic actuating cylinder 3 can be connected with secondary horizontal support legs 2, the cylinder body of hydraulic actuating cylinder 3 is connected with one-level horizontal support legs 1; Also the cylinder body of hydraulic actuating cylinder 3 can be connected with secondary horizontal support legs 2, the piston end of hydraulic actuating cylinder 3 is connected with one-level horizontal support legs 1.
The horizontal support legs of this hoisting crane also comprises and is arranged at one-level horizontal support legs 1 and secondary horizontal support legs 2 in-to-in drag chains 4, and the flexible switch 5 of limit extended position side that is arranged at first end of drag chain 4; First end of drag chain 4 is connected with an end of hydraulic actuating cylinder 3, and second end of drag chain 4 is connected with the other end of hydraulic actuating cylinder 3, and the termination of first end of drag chain 4 is towards second end of drag chain 4; Drag chain 4 with the direction of hydraulic actuating cylinder 3 parallel axes on limit span, equal the range of hydraulic actuating cylinder 3.The piston end of hydraulic actuating cylinder 3 can be connected with first end of drag chain 4, the cylinder body of hydraulic actuating cylinder 3 is connected with second end of drag chain 4; Also the cylinder body of hydraulic actuating cylinder 3 can be connected with first end of drag chain 4, the piston end of hydraulic actuating cylinder 3 is connected with second end of drag chain 4.
With the termination of first end of drag chain 4 second end towards drag chain 4, when hydraulic actuating cylinder 3 elongations, the chain of first end of drag chain 4 constantly stretches with the mode rolled second end with respect to drag chain 4, when hydraulic actuating cylinder 3 reaches when stretching state entirely, the chain of drag chain 4 first ends and hydraulic actuating cylinder 3 connecting portions is roll-up state.
" limit extended positions of drag chain 4 first ends " as herein described refer to, when hydraulic actuating cylinder 3 reaches when stretching state entirely, and drag chain 4 first ends and hydraulic actuating cylinder 3 connecting portions, chain is the position of roll-up state.In this position, when hydraulic actuating cylinder 3 is in non-ly when stretching state entirely, flexible switch 5 is subjected to the extruding of drag chain 4 sidepieces to be in closure state all the time; When hydraulic actuating cylinder 3 reaches when stretching state entirely, drag chain 4 is rolled from this position, and flexible switch 5 no longer is subjected to the extruding of drag chain 4 and stretches out, and this moment, flexible switch 5 was in off-state.
When hydraulic actuating cylinder 3 is in non-ly when stretching the position entirely, drag chain 4 extruding are arranged at the flexible switch 5 of the limit extended position side of this drag chain 4, and this flexible switch 5 is in closure state; When hydraulic actuating cylinder 3 stretches out, drag chain 4 stretches together in company with hydraulic actuating cylinder 3, when hydraulic actuating cylinder 3 reaches when stretching state entirely, drag chain 4 span that reaches capacity, at this moment, drag chain 4 is rolled from the limit extended position of its first end, and therefore drag chain 4 no longer pushes flexible switch 5, should stretch out by flexible switch 5, be changed to off-state.According to the variation of these flexible switch 5 states, can judge promptly whether secondary horizontal support legs 2 is in and stretch state entirely.
Because secondary horizontal support legs 2 stretches by hydraulic actuating cylinder 3, when hydraulic actuating cylinder 3 is in when stretching state entirely, secondary horizontal support legs 2 promptly is in and stretches state entirely.The supporting leg of the hoisting crane that the utility model provides, by the drag chain 4 that is synchronized with the movement with hydraulic actuating cylinder 3 is set, when detecting drag chain 4 and be in the end position of stretching entirely, hydraulic actuating cylinder 3 also is in the end position of stretching entirely, and then can detect the state of stretching entirely of secondary horizontal support legs 2.Because drag chain 4 and flexible switch 5 all are arranged on the hydraulic actuating cylinder 3, have avoided the influence of one-level horizontal support legs 1 and secondary horizontal support legs 2 Mismachining tolerances, can detect the state of stretching entirely of secondary horizontal support legs 2 reliably.
First end of drag chain 4 can be connected with the cylinder body of hydraulic actuating cylinder 3, and second end of drag chain 4 can be connected with the piston end of hydraulic actuating cylinder 3.
First end of drag chain 4 is arranged on the cylinder body of hydraulic actuating cylinder 3, can will stretches switch 5 direct mounts on the cylinder body of hydraulic actuating cylinder 3, when drag chain 3 is in fully compensated state at hydraulic actuating cylinder 3, can folded flat be laid on the cylinder body of hydraulic actuating cylinder 3.Setting can utilize the existing space on the cylinder body like this, and is simple and easy to do.
Can also be provided with on the cylinder body of hydraulic actuating cylinder 3 can ccontaining drag chain 4 key way 6, this key way 6 can be along the axial setting of hydraulic actuating cylinder 3.First end of key way 6 points to the cylinder mouth end of the cylinder body of hydraulic actuating cylinder 3, and second end of key way 6 points to the cylinder bottom portion of the cylinder body of hydraulic actuating cylinder 3.First end of key way 6 both can be arranged at the cylinder mouth end of the cylinder body of hydraulic actuating cylinder 3, also can have certain distance with this cylinder mouth end.The both sides of this key way 6 can be provided with sidewall, with the sense of motion of regulation drag chain 4.
Be provided with under the situation of key way 6, when hydraulic actuating cylinder 3 stretched out, drag chain 4 was rolled from key way 6, and when hydraulic actuating cylinder 3 withdrawals, drag chain 4 is returned in the key way 6 gradually, can the occurrence positions skew.
Second end of drag chain 4 can be arranged at the cylinder mouth end of cylinder body.Other positions on the cylinder body, setting can reduce the length of drag chain 4 like this, and then saving in material.
First end of key way 6 can be arranged at the cylinder mouth end of cylinder body, and the limit extended position corresponding to drag chain 4 on the sidewall of key way 6 can offer through hole, and flexible switch 5 can be arranged on the sidewall of key way 6, and is positioned at the side of this through hole.
First end of key way 6 is arranged at the cylinder mouth end of cylinder body, just the switch 5 that stretches can be arranged on this key way 6.Setting can improve the setting accuracy of detector switch like this, and installs also convenient.
Can also be provided with the switch bracket 7 of fixing flexible switch 5 on the sidewall of key way 6, with further assurance setting accuracy.
The connection lead of flexible switch 5 can be arranged at the inside of drag chain 4, avoids exterior infringement to guarantee circuit, also can improve the presentation quality of the supporting leg of this hoisting crane in addition.
The piston end of hydraulic actuating cylinder 3 can also be provided with drag chain 4 supports, and first end of drag chain 4 can be connected in the desired location of drag chain 4 supports.Determining of this desired location is in when stretching state entirely to guarantee drag chain 4, drag chain 4 stretch part can with the parallel axes of hydraulic actuating cylinder 3.
Be provided with like this, drag chain 4 with the direction of hydraulic actuating cylinder 3 parallel axes on limit span, be the whole limit span of drag chain 4, and then the whole limit span of drag chain 4, equate with the range of hydraulic actuating cylinder 3, the relative motion position of drag chain 4 and the relative motion position of hydraulic actuating cylinder 3 are in corresponding states one by one in proportion, and compact conformation is set like this, also can further save the material of drag chain 4.In addition, be provided with like this and can also set up detector switch, thereby can measure the corresponding extended position of secondary horizontal support legs 2 as required in the relevant position on the sidewall of key way 6.
The utility model also provides a kind of hoisting crane, comprise fixed supporting leg and with fixed supporting leg bonded assembly horizontal support legs, this horizontal support legs is above-described horizontal support legs.Owing to comprised the horizontal support legs of above-described hoisting crane in this hoisting crane, its also corresponding technique effect that horizontal support legs had with above-described hoisting crane.In addition, the technical characterictic of other parts of this hoisting crane can not repeat them here referring to prior art.
Used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (9)
1. the horizontal support legs of a hoisting crane, comprise one-level horizontal support legs (1) and the secondary horizontal support legs (2) that can from described one-level horizontal support legs (1), stretch out, and all be arranged at described one-level horizontal support legs (1) and described secondary horizontal support legs (2) in-to-in hydraulic actuating cylinder (3) and drag chain (4); One end of described hydraulic actuating cylinder (3) is connected with described one-level horizontal support legs (1), and its other end is connected with described secondary horizontal support legs (2); First end of described drag chain (4) is connected with an end of described hydraulic actuating cylinder (3), and second end of described drag chain (4) is connected with the other end of described hydraulic actuating cylinder (3), and the termination of first end of described drag chain (4) is towards second end of described drag chain (4); It is characterized in that, also comprise the flexible switch (5) of the limit extended position side of first end that is arranged at described drag chain (4); Described drag chain (4) with the direction of described hydraulic actuating cylinder (3) parallel axes on limit span, equal the range of described hydraulic actuating cylinder (3).
2. the horizontal support legs of hoisting crane according to claim 1 is characterized in that, first end of described drag chain (4) is connected with the cylinder body of described hydraulic actuating cylinder (3), and second end of described drag chain (4) is connected with the piston end of described hydraulic actuating cylinder (3).
3. the horizontal support legs of hoisting crane according to claim 2 is characterized in that, also comprise can ccontaining described drag chain (4) key way (6), described key way (6) is axially set on the described cylinder body along described hydraulic actuating cylinder (3).
4. the horizontal support legs of hoisting crane according to claim 3 is characterized in that, first end of described drag chain (4) is arranged at the cylinder mouth end of described cylinder body.
5. the horizontal support legs of hoisting crane according to claim 4, it is characterized in that, first end of described key way (6) is arranged at the cylinder mouth end of described cylinder body, limit extended position corresponding to described drag chain (4) on the sidewall of described key way (6) offers through hole, described flexible switch (5) is arranged on the sidewall of described key way (6), and is positioned at the side of described through hole.
6. the horizontal support legs of hoisting crane according to claim 5 is characterized in that, the sidewall of described key way (6) is provided with the switch bracket (7) of fixing described flexible switch (5).
7. according to the horizontal support legs of each described hoisting crane of claim 1 to 5, it is characterized in that the connection lead of described flexible switch (5) is arranged at the inside of described drag chain (4).
8. according to the horizontal support legs of each described hoisting crane of claim 1 to 5, it is characterized in that the piston end of described hydraulic actuating cylinder (3) is provided with drag chain support (8), second end of described drag chain (4) is connected in the desired location of described drag chain (4) support.
9. hoisting crane, comprise fixed supporting leg and with described fixed supporting leg bonded assembly horizontal support legs, it is characterized in that described horizontal support legs is each described horizontal support legs of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206715607U CN201980904U (en) | 2010-12-21 | 2010-12-21 | Horizontal landing leg of crane and crane provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206715607U CN201980904U (en) | 2010-12-21 | 2010-12-21 | Horizontal landing leg of crane and crane provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201980904U true CN201980904U (en) | 2011-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206715607U Expired - Fee Related CN201980904U (en) | 2010-12-21 | 2010-12-21 | Horizontal landing leg of crane and crane provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201980904U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874696A (en) * | 2012-09-27 | 2013-01-16 | 徐州天地重型机械制造有限公司 | Two-stage synchronous extensible landing leg |
-
2010
- 2010-12-21 CN CN2010206715607U patent/CN201980904U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874696A (en) * | 2012-09-27 | 2013-01-16 | 徐州天地重型机械制造有限公司 | Two-stage synchronous extensible landing leg |
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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 |
Granted publication date: 20110921 Termination date: 20191221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |