CN206662679U - A kind of crane hydraulic oil cylinder rapid dismounting apparatus - Google Patents
A kind of crane hydraulic oil cylinder rapid dismounting apparatus Download PDFInfo
- Publication number
- CN206662679U CN206662679U CN201720234684.0U CN201720234684U CN206662679U CN 206662679 U CN206662679 U CN 206662679U CN 201720234684 U CN201720234684 U CN 201720234684U CN 206662679 U CN206662679 U CN 206662679U
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- oil cylinder
- hydraulic pressure
- pressure oil
- cylinder
- hydraulic
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- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 42
- 239000003921 oil Substances 0.000 claims abstract description 121
- 238000005086 pumping Methods 0.000 claims abstract description 11
- 230000008878 coupling Effects 0.000 claims abstract description 9
- 238000010168 coupling process Methods 0.000 claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims description 7
- 239000002699 waste material Substances 0.000 claims description 7
- 239000003208 petroleum Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000006735 deficit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Actuator (AREA)
Abstract
It the utility model is related to a kind of crane hydraulic oil cylinder rapid dismounting apparatus, including horizontal hydraulic pressure oil cylinder and raising hydraulic jack, wherein raising hydraulic jack is located at the lower end of horizontal hydraulic pressure oil cylinder, the piston rod top of raising hydraulic jack is connected in vertical direction using universal connected mode with horizontal hydraulic pressure oil cylinder, horizontal hydraulic pressure oil cylinder is fixed in travel(l)ing rest by the heel removable pin of rear end, the piston rod head of horizontal hydraulic pressure oil cylinder is fixedly connected with shaft coupling by steady pin, adjustment height fixed support is provided with front of horizontal hydraulic pressure oil cylinder, manually guiding valve and the hydraulic oil pumping plant of rear end are connected horizontal hydraulic pressure oil cylinder respectively with raising hydraulic jack, power is provided by hydraulic oil pumping plant.Crane hydraulic oil cylinder piston rod pull-out and built-up time, raising installation quality and operating efficiency, the smooth implementation that can ensure that the production schedule and upkeep operation safety can be shortened.
Description
Technical field
The utility model belongs to engineering mechanical device technical field, is related to a kind of crane hydraulic oil cylinder fast assembling-disassembling dress
Put.
Background technology
Crane hydraulic oil cylinder, it is long 6 ~ 12 meters, diameter 300 ~ 500, weigh one ton, piston rod assembly by piston rod, piston,
Seal, piston fixture etc. form, and weight is one ton, up to 12 meters.Seal assembly is being changed, when extracting piston rod out, is being passed
The technological process of system is to fix oil cylinder, and piston rod centre is hung with crane gear, then will with bottle gouard moved by hands or fork truck
Piston rod pulls out, and after piston rod pulls out and changes seal, then piston rod assembly and cylinder barrel is assembled, during assembling due to
During putting into cylinder barrel, typically sling with crane gear, in cylinder barrel oral area to good piston seal component, then will be living with sleeper
Stopper rod is hammered into shape into cylinder barrel, when oil cylinder reaches it is 9 meters long when, the method has lost efficiency, this disassembly and assembly piston rod assembly
Method, efficiency is low, hand labor intensity is big, and easily damage piston and piston rod, ground are also easy to produce greasy dirt, pollute environment, together
When operation environment potential safety hazard be present.
Utility model content
In order to overcome the disadvantages mentioned above of prior art, the utility model provides a kind of crane hydraulic oil cylinder fast assembling-disassembling dress
Put, it can shorten the pull-out of crane hydraulic oil cylinder piston rod and built-up time, improve installation quality and operating efficiency, can ensure that
The smooth implementation of the production schedule and upkeep operation safety.
Technical scheme is used by the utility model solves its technical problem：A kind of crane hydraulic oil cylinder fast assembling-disassembling
Device, including horizontal hydraulic pressure oil cylinder and raising hydraulic jack, wherein raising hydraulic jack are located at the lower end of horizontal hydraulic pressure oil cylinder, rise
The piston rod top for rising hydraulic jack is connected in vertical direction using universal connected mode with horizontal hydraulic pressure oil cylinder, horizontal hydraulic pressure oil
Cylinder is fixed in travel(l)ing rest by the heel removable pin of rear end, and wherein heel removable pin can be in travel(l)ing rest in Vertical Square
Moved up and down into defined extent height 0-600mm, piston rod head and the shaft coupling of horizontal hydraulic pressure oil cylinder pass through steady pin
It is fixedly connected, adjustment height fixed support is provided with front of horizontal hydraulic pressure oil cylinder and cooperation is dismounted, horizontal hydraulic pressure oil cylinder is with rising
Rising hydraulic jack, manually guiding valve and the hydraulic oil pumping plant of rear end are connected respectively, and power is provided by hydraulic oil pumping plant.
Raising hydraulic jack is respectively provided with below the horizontal hydraulic pressure oil cylinder and travel(l)ing rest, passes through the work of raising hydraulic jack
Stopper rod is moved up and down, it is possible to achieve horizontal hydraulic pressure oil cylinder is freely lifted；The different height of horizontal hydraulic pressure oil cylinder is adjusted simultaneously, can be with
Realize the change of different angle or the different elevation angle of the horizontal hydraulic pressure oil cylinder in prescribed limit.
The travel(l)ing rest is strengthened being fixed on oil cylinder groove by strength plate,
The oil cylinder groove lower end has been bolted oil cylinder groove seat support meanss, and oil cylinder groove seat support meanss are using expansion
Screw fixes on the ground.
It is connected with using two-sided welding on oil cylinder groove and is fixed for dismantling and assembling the adjustment height of cylinder block afterbody pin
Support.
There is motor in hydraulic oil pumping plant, motor then drives drive oil pump, and wherein motor speed is 1450r/min.
The waste oil collecting case being connected with oil cylinder groove is provided with the oil cylinder groove lower end.
Oil pump is provided with filter, and hydraulic oil enters oil pump by filter, hydraulic oil is produced under the drive of motor,
When manual guiding valve is in middle position, manually the direct oil return box of guiding valve, manual guiding valve use shunt circuit, raising to all pressure oils
Hydraulic jack and horizontal hydraulic pressure oil cylinder can form single cylinder action or form teamwork at any time, by being arranged on
One-way throttle valve on the petroleum pipeline of raising hydraulic jack or horizontal hydraulic pressure oil cylinder realizes throttle grverning, while together with manual guiding valve
Aperture size be more easy to realize at a slow speed accurately adjustment piston rod movement speed, when hydraulic jack be fully retracted into or all stretch out, now
Gauge hand rises rapidly, and system pressure rise, when reaching certain value, overflow valve starts overflow, plays safeguard protection
Effect；When horizontal hydraulic pressure oil cylinder in the course of the work, if assembled cylinder piston rod misalignment cylinder body, produce assembling oil cylinder and live
Stopper rod is in contact with cylinder ends, or seal size does not meet requirement, the pressure on horizontal hydraulic pressure oil cylinder pipe joint
Power list index raises rapidly, should stop manual guiding valve immediately, checks the axiality of assembling cylinder piston rod and cylinder body and has zero deflection.
The beneficial effects of the utility model are：Reliable guarantee, collision free can be provided for maintenance crane hydraulic oil cylinder
Oil cylinder is scratched, reduces quality impairment of the seal in assembling process, the security performance of crane is improved, extends crane hydraulic pressure
The service life of cylinder seal part, reduce external leakage and the pollution to environment.Labor intensity is reduced simultaneously, improves operating efficiency；
Saving cost of labor expense, at least 5 workers of needs, activity duration are minimum for one crane telescopic hydraulic jack of dismounting and assembling
8 hours are needed, 450 yuan of fork truck expense, 2 workers are only needed using this device, the activity duration at most needs 4 hours, it is not necessary to
With fork truck thus dismounting one oil cylinder once the expense of saving amount to：100×（5-2）+ 450=750 yuan, calculate within 1 year 30 oil of maintenance
Cylinder, finally cost-effective expense adds up to：750 × 30=22500 yuan；It is delayed crane One-Shift Costs, 30 was changed by 1 year above
Bar oil cylinder, oil cylinder 4 hours amount to the 120 hours crane machine-team time of delay, machine-team 8 hours, and a machine-team is put down
Equal 2500 yuan of delays crane machine-team takes 8 × 2500=32500 yuan of 120 ÷ of hour；Year saves total cost=labour cost+delay lifting
+ 32500 yuan of board student contributions pooled to pay for class activities=22500 yuan=55000 yuan.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is utility model works state diagram；
Fig. 3 is hydraulic system principle figure.
In figure：1-motor；2-oil pump；3-manual guiding valve；4-raising hydraulic jack；5-horizontal hydraulic pressure oil cylinder；6—
Travel(l)ing rest；7-heel removable pin；8-shaft coupling；9-steady pin；10-waste oil collecting case；11-oil cylinder groove；12-can
Adjusting height fixed support；13-crown block hook；14-it is disassembled cylinder piston rod, 15- cylinder bodies, 16- fuel tanks, 17- filters；
18- pressure gauges, 19- choke valves.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
Referring to Fig. 1~Fig. 3, a kind of crane hydraulic oil cylinder rapid dismounting apparatus, including horizontal hydraulic pressure oil cylinder 5 and raising liquid
Compressing cylinder 4, wherein raising hydraulic jack 4 are located at the lower end of horizontal hydraulic pressure oil cylinder 5, and the piston rod top of raising hydraulic jack 4 exists
Vertical direction is connected using universal connected mode with horizontal hydraulic pressure oil cylinder 5, the heel removable pin that horizontal hydraulic pressure oil cylinder 5 passes through rear end
7 are fixed in travel(l)ing rest 6, and wherein heel removable pin 7 can be in travel(l)ing rest 6 in extent height 0- as defined in vertical direction
Moved up and down in 600mm, the piston rod head of horizontal hydraulic pressure oil cylinder 5 is fixedly connected with shaft coupling 8 by steady pin 9, horizontal liquid
The front of compressing cylinder 5 is provided with adjustment height fixed support 12 and coordinated and dismounted, horizontal hydraulic pressure oil cylinder 5 and raising hydraulic jack 4
Manually guiding valve 3 and the hydraulic oil pumping plant of rear end are connected respectively, and power is provided by hydraulic oil pumping plant.
The lower section of horizontal hydraulic pressure oil cylinder 5 and travel(l)ing rest 6 is respectively provided with raising hydraulic jack 4, passes through raising hydraulic jack 4
Piston rod move up and down, it is possible to achieve horizontal hydraulic pressure oil cylinder 5 is freely lifted；The difference for adjusting horizontal hydraulic pressure oil cylinder 5 simultaneously is high
Degree, it is possible to achieve the change of different angle or the different elevation angle of the horizontal hydraulic pressure oil cylinder 5 in prescribed limit.
The travel(l)ing rest 6 is strengthened being fixed on oil cylinder groove 11 by strength plate.
The lower end of oil cylinder groove 11 has been bolted the seat supports device of oil cylinder groove 11, and the seat supports device of oil cylinder groove 11 is adopted
Fixed on the ground with setscrew.
Two-sided welding is used to be connected with the adjustment height for dismantling and assembling the afterbody pin of cylinder block 15 on oil cylinder groove 11
Fixed support 12.
There is motor in hydraulic oil pumping plant, motor then drives drive oil pump, and wherein motor speed is 1450r/min.
The waste oil collecting case 10 being connected with oil cylinder groove 11 is provided with the lower end of oil cylinder groove 11.
Oil pump 2 is provided with filter 17, and hydraulic oil enters oil pump 2 by filter 17, produced under the drive of motor
Hydraulic oil, when manual guiding valve 3 is in middle position, manually the direct oil return box 16 of guiding valve 3, manual guiding valve 3 use all pressure oils
Shunt circuit, raising hydraulic jack 4 and horizontal hydraulic pressure oil cylinder 5 can form single cylinder action or form joint at any time
Action, realize that throttling is adjusted by the one-way throttle valve 19 being arranged on the petroleum pipeline of raising hydraulic jack 4 or horizontal hydraulic pressure oil cylinder 5
Speed, while it is more easy to realize at a slow speed accurately adjustment piston rod movement speed together with the manual aperture size of guiding valve 3, when hydraulic jack is whole
Retract or all stretch out, now the pointer of pressure gauge 18 rises rapidly, and system pressure rise, when reaching certain value, overflow valve is opened
Beginning overflow, plays a part of safeguard protection；When horizontal hydraulic pressure oil cylinder 5 in the course of the work, if assembled cylinder piston rod is not
Cylinder body 15 is directed at, assembling cylinder piston rod is produced and is in contact with the end of cylinder body 15, or seal size does not meet requirement, dress
The pointer of pressure gauge 18 on the pipe joint of horizontal hydraulic pressure oil cylinder 5 raises rapidly, should stop manual guiding valve 3 immediately, checks assembling oil
The axiality of cylinder piston rod and cylinder body 15 has zero deflection.
During real work, when crane hydraulic oil cylinder is dismantled, first the oil cylinder that need to be dismantled is installed on oil cylinder groove 11, led to
The oil cylinder that crossing the afterbody pin of cylinder block 15 makes to dismantle is fixed on adjustment height fixed support 12, by this oil cylinder head fixing nut
Lay down, piston rod is pinned with suspender belt and hangs up crown block hook 13, rise crown block hook 13 and treat suspender belt just stress, now starting-up oil
Pump, the manual guiding valve 3 of operation raising hydraulic jack 4, rises raising hydraulic jack 4, and water is adjusted by spool control valve action bars
The piston rod of flat hydraulic jack 5 now operates horizontal hydraulic pressure oil cylinder 5 with being disassembled cylinder piston rod 14 in the same horizontal line
Manual guiding valve 3, the rodless cavity oil-feed of horizontal hydraulic pressure oil cylinder 5 so that the piston rod of horizontal hydraulic pressure oil cylinder 5 stretches out together with shaft coupling 8,
When shaft coupling 8 is close is disassembled 14 head of cylinder piston rod, the aperture of spool control valve so that shaft coupling 8 is with slower more steady
Speed is alignd with being disassembled the head pin-and-hole of cylinder piston rod 14, puts on steady pin 9, and the manual guiding valve 3 of horizontal hydraulic pressure oil cylinder 5 is changed
To operation, the rod chamber oil-feed of horizontal hydraulic pressure oil cylinder 5, the piston rod of horizontal hydraulic pressure oil cylinder 5 together bounces back together with shaft coupling 8, when split
When cylinder body 15 will be pulled out by unloading the head piston of cylinder piston rod 14, the aperture of spool control valve so that head piston is with slower
More steady speed pulls out（Because of the characteristics of crane hydraulic oil cylinder is big and long, weight, therefore it is difficult to control）, prevent piston crown nut with
The inwall of cylinder body 15 collides, and scratches the inwall of cylinder body 15, while start the cart of overhead traveling crane so that being disassembled cylinder piston rod 14 from cylinder body
Steadily pulled out in 15, the waste and old hydraulic oil for being disassembled oil cylinder outflow flows into waste oil collecting case 10 by dismounting groove, reduces waste and old liquid
Force feed inflow surface and the pollution to environment, dismounting finish.
When crane hydraulic oil cylinder assembles, order is just the opposite, it is to be noted that:When assembled piston rod is with being assembled
Cylinder body 15 apart from it is near when, it is necessary to be finely adjusted raising hydraulic jack 4, finely tune the height of crown block hook 13 so that horizontal hydraulic pressure
Oil cylinder 5 and assembling cylinder piston rod, assemble the axial line of oil cylinder in the same horizontal line, while the control stick of spool control valve makes
The aperture of guiding valve reduces, the seal soft step being easy on assembled piston rod head piston enters cylinder body 15（To prevent
Seal trimming in assembling, loses sealing effectiveness, reduces rework rate）.Continue to promote 50cm, load onto cylinder head fixing nut,
Continue propelling piston bar and reach desired value, that is, complete assembling.
The utility model can provide reliable guarantee for maintenance crane hydraulic oil cylinder, and collision free scratches oil cylinder, reduces
Quality impairment of the seal in assembling process, the security performance of crane is improved, extend crane hydraulic oil cylinder seal
Service life, reduce external leakage and the pollution to environment.Labor intensity is reduced simultaneously, improves operating efficiency；Save cost of labor
Expense, one crane telescopic hydraulic jack of dismounting and assembling at least need 5 workers, and the activity duration at least needs 8 hours, pitches
Fare only needs 2 workers with 450 yuan, using this device, and the activity duration at most needs 4 hours, it is not necessary to fork truck therefore dismounts
Once the expense of saving amounts to one oil cylinder：100×（5-2）+ 450=750 yuan, 30 oil cylinders of maintenance are calculated within 1 year, must be saved into finally
This expense adds up to：750 × 30=22500 yuan；It is delayed crane One-Shift Costs, 30 oil cylinders, an oil cylinder was changed by 1 year above
4 hours, 120 hours crane machine-team time of delay, machine-team 8 hours are amounted to, and average 2500 yuan an of machine-team is delayed
Heavy-duty machine machine-team takes 8 × 2500=32500 yuan of 120 ÷ of hour；Save total cost=labour cost+delay crane machine-team in year and take=22500
+ 32500 yuan=55000 yuan of member.
Claims (8)
1. a kind of crane hydraulic oil cylinder rapid dismounting apparatus, including horizontal hydraulic pressure oil cylinder and raising hydraulic jack, its feature exist
In：Wherein raising hydraulic jack is located at the lower end of horizontal hydraulic pressure oil cylinder, and the piston rod top of raising hydraulic jack is in vertical direction
It is connected using universal connected mode with horizontal hydraulic pressure oil cylinder, horizontal hydraulic pressure oil cylinder is fixed on activity by the heel removable pin of rear end
In support, wherein heel removable pin can move down in travel(l)ing rest on as defined in vertical direction in extent height 0-600mm
Dynamic, the piston rod head of horizontal hydraulic pressure oil cylinder is fixedly connected with shaft coupling by steady pin, and being provided with front of horizontal hydraulic pressure oil cylinder can
Adjusting height fixed support and coordinating is dismounted, horizontal hydraulic pressure oil cylinder and raising hydraulic jack manually guiding valve and rear end respectively
Hydraulic oil pumping plant be connected, by hydraulic oil pumping plant provide power.
2. crane hydraulic oil cylinder rapid dismounting apparatus as claimed in claim 1, it is characterised in that：The horizontal hydraulic pressure oil cylinder and
Raising hydraulic jack is respectively provided with below travel(l)ing rest, is moved up and down by the piston rod of raising hydraulic jack, it is possible to achieve be horizontal
Hydraulic jack is freely lifted；The different height of horizontal hydraulic pressure oil cylinder is adjusted simultaneously, it is possible to achieve horizontal hydraulic pressure oil cylinder is in regulation model
The change of different angle or the different elevations angle in enclosing.
3. crane hydraulic oil cylinder rapid dismounting apparatus as claimed in claim 1, it is characterised in that：The travel(l)ing rest passes through strength
Plate is strengthened being fixed on oil cylinder groove.
4. crane hydraulic oil cylinder rapid dismounting apparatus as claimed in claim 1, it is characterised in that：The oil cylinder groove lower end passes through
Bolt connection has oil cylinder groove seat support meanss, and oil cylinder groove seat support meanss are fixed on the ground using setscrew.
5. crane hydraulic oil cylinder rapid dismounting apparatus as claimed in claim 1, it is characterised in that：Welding by both sides is used on oil cylinder groove
The adjustment height fixed support for dismantling and assembling cylinder block afterbody pin is connected in succession.
6. crane hydraulic oil cylinder rapid dismounting apparatus as claimed in claim 1, it is characterised in that：There is electricity in hydraulic oil pumping plant
Machine, motor then drive drive oil pump, and wherein motor speed is 1450r/min.
7. crane hydraulic oil cylinder rapid dismounting apparatus as claimed in claim 1, it is characterised in that：Set in the oil cylinder groove lower end
There is the waste oil collecting case being connected with oil cylinder groove.
8. crane hydraulic oil cylinder rapid dismounting apparatus as claimed in claim 6, it is characterised in that：Oil pump is provided with filter,
Hydraulic oil enters oil pump by filter, and hydraulic oil is produced under the drive of motor, when manual guiding valve is in middle position, all pressures
Manually the direct oil return box of guiding valve, manual guiding valve use shunt circuit to power oil, and raising hydraulic jack and horizontal hydraulic pressure oil cylinder exist
Any time can form single cylinder action or form teamwork, by being arranged on raising hydraulic jack or horizontal hydraulic pressure oil
One-way throttle valve on the petroleum pipeline of cylinder realizes throttle grverning, while together with manual guiding valve aperture size is more easy to realize accurate at a slow speed
Piston rod movement speed is adjusted, when hydraulic jack is fully retracted into or is all stretched out, now gauge hand rises rapidly, system pressure
Power raises, and when reaching certain value, overflow valve starts overflow, plays a part of safeguard protection；When horizontal hydraulic pressure oil cylinder is working
During, if assembled cylinder piston rod misalignment cylinder body, produce assembling cylinder piston rod and be in contact with cylinder ends, or it is close
Sealing size does not meet requirement, and the gauge hand on horizontal hydraulic pressure oil cylinder pipe joint raises rapidly, should stop immediately
Only manual guiding valve, checking the axiality of assembling cylinder piston rod and cylinder body has zero deflection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720234684.0U CN206662679U (en) | 2017-03-13 | 2017-03-13 | A kind of crane hydraulic oil cylinder rapid dismounting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720234684.0U CN206662679U (en) | 2017-03-13 | 2017-03-13 | A kind of crane hydraulic oil cylinder rapid dismounting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206662679U true CN206662679U (en) | 2017-11-24 |
Family
ID=60376097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720234684.0U Expired - Fee Related CN206662679U (en) | 2017-03-13 | 2017-03-13 | A kind of crane hydraulic oil cylinder rapid dismounting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206662679U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114290280A (en) * | 2021-12-17 | 2022-04-08 | 芜湖海螺水泥有限公司 | Auxiliary disassembling and assembling mechanism for hydraulic oil cylinder |
-
2017
- 2017-03-13 CN CN201720234684.0U patent/CN206662679U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114290280A (en) * | 2021-12-17 | 2022-04-08 | 芜湖海螺水泥有限公司 | Auxiliary disassembling and assembling mechanism for hydraulic oil cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 |
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| CF01 | Termination of patent right due to non-payment of annual fee |