CN205331088U - Vertical shaft type is gallery rig hydraulic system by oneself - Google Patents
Vertical shaft type is gallery rig hydraulic system by oneself Download PDFInfo
- Publication number
- CN205331088U CN205331088U CN201521123819.3U CN201521123819U CN205331088U CN 205331088 U CN205331088 U CN 205331088U CN 201521123819 U CN201521123819 U CN 201521123819U CN 205331088 U CN205331088 U CN 205331088U
- Authority
- CN
- China
- Prior art keywords
- hand
- operated direction
- direction valve
- cylinder
- valve group
- 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
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a vertical shaft type is gallery rig hydraulic system by oneself contains hydraulic circuit, inhales oil filter and oil tank, hydraulic circuit includes a hydraulic circuit and the 2nd hydraulic circuit. The utility model discloses structure principle simple and clear operates simple and directly, and the fault rate is low, easily the maintenance maintain.
Description
Technical field
This utility model relates to hydraulic system, is specifically related to a kind of vertical shaft tunnel drilling rig hydraulic system。
Background technology
What in current China's coal-mine tunnel, geological prospecting and gas exhaust discharge hole used in constructing in a large number is mainly vertical shaft type underground drill rig and hydraulic power hair style underground drill rig two kinds。Vertical shaft type underground drill rig is that geology rock-core borer that is that succeed in developing from the sixties in last century and that obtain widely applying develops; vertical shaft type underground drill rig adopts machine driving hydraulic feed; maintaining is simple; mechanical efficiency is high; power consumption is few, cheap, there is shortcoming rig intelligent digital degree poor; feeding the short need of stroke and often shut down down bar, complete machine resettlement and installation are inconvenient。Hydraulic power hair style underground drill rig is a kind of oil pressure actuated and the rig controlling all running gears, adopts overall vehicle-mounted mode and adopts all-hydraulic control so mechanization degree is high more at present。But owing to the processing and manufacturing of power head type drill rig is more complicated, the requirement of use and maintenance is higher, therefore the quality of operator and management requirement are higher than spindle-type drill。
Utility model content
For solving the problems referred to above, this utility model provides a kind of maintaining simple, mechanical efficiency is high, power consumption is few, the advantage such as cheap be simultaneously introduced hydraulically powered walking function module, auxiliary supports module, make it realize higher integration and Mechanization Level on former basis, can thoroughly avoid the inconvenient vertical shaft tunnel drilling rig hydraulic system that complete machine resettlement and dismounting bring。
The technical solution of the utility model
A kind of vertical shaft type tunnel drilling rig hydraulic system voluntarily, comprises hydraulic circuit, oil absorption filter and fuel tank, and described hydraulic circuit includes the first hydraulic circuit and the second hydraulic circuit；
Described first hydraulic circuit includes the main pump of double-gear oil pump, two hand-operated direction valve groups, first Pressure gauge and a left side, right running motor, described two hand-operated direction valve groups are provided with pressure tap, oil-in, oil return opening, described two hand-operated direction valve group each valve group is respectively arranged with left actuator port and right actuator port, the main pump of described double-gear oil pump and two hand-operated direction valve groups are connected, described two hand-operated direction valve groups are with left, right running motor is connected, described first Pressure gauge and two hand-operated direction valve group pressure tap are connected, described double-gear oil pump connects fuel tank by oil absorption filter；
Described second hydraulic circuit includes the auxiliary pump of double-gear oil pump, 5-linked hand-operated direction valve group, tetrad hand-operated direction valve group, the second Pressure gauge, hydraulic lock, flow speed control valve and operating cylinder, and described 5-linked hand-operated direction valve group and tetrad hand-operated direction valve group are connected in series；Described tetrad hand-operated direction valve group is provided with oil-in and oil return opening, described tetrad hand-operated direction valve group each valve group is respectively arranged with left actuator port and right actuator port；Described 5-linked hand-operated direction valve group is provided with oil-in, oil return opening and pressure tap, described 5-linked hand-operated direction valve group each valve group is respectively arranged with left actuator port, right actuator port；Described operating cylinder includes the front lower support cylinder of rig, rami posterior inferior support oil cylinder, front upper support cylinder, rami posterior superior support oil cylinder, lateral support oil cylinder and feed cylinder, hydraulic clutch oil cylinder, chuck oil cylinder, clamper oil cylinder and connects；The actuator port of described 5-linked hand-operated direction valve group each valve group connects the front lower support cylinder of rig, rami posterior inferior support oil cylinder, front upper support cylinder, rami posterior superior support oil cylinder, lateral support oil cylinder respectively；The actuator port of the described each valve group of tetrad hand-operated direction valve group respectively with feed cylinder, hydraulic clutch oil cylinder, chuck oil cylinder, clamper oil cylinder connects, described second Pressure gauge is connected with 5-linked hand-operated direction valve group pressure tap, the auxiliary pump of described double-gear oil pump is connected with 5-linked hand-operated direction valve group, the auxiliary pump of described double-gear oil pump connects fuel tank by oil absorption filter, described front lower support cylinder, rami posterior inferior support oil cylinder, front upper support cylinder, rami posterior superior support oil cylinder is connected with the 5-linked left actuator port of valve group and right actuator port each through bidirectional hydraulic lock, the described tetrad left actuator port of hand-operated direction valve group and right actuator port are connected to feed cylinder through flow speed control valve。
Further, described two hand-operated direction valve groups are made up of the identical 3-position 4-way hand-operated direction valve of two panels and overflow valve；The left actuator port of two hand-operated direction valve groups first is connected with left running motor with right actuator port, the left actuator port of second is connected with right running motor with right actuator port, and the oil return opening of two hand-operated direction valve groups and the drain tap of left running motor, right running motor all connect with fuel tank。
Further, described tetrad hand-operated direction valve group is made up of four 3-position 4-way hand-operated direction valves and overflow valve, and the first hand-operated direction valve is 3-position 4-way manual positioning reversal valve, and the first hand-operated direction valve is connected to feed cylinder through flow speed control valve；After quadruple valve group, three hand-operated direction valves are 3-position 4-way spring reset hand-operated direction valve, second hand-operated direction valve connects hydraulic clutch oil cylinder through bidirectional hydraulic lock, 3rd hand-operated direction valve connecting chuck oil cylinder, tetrad is connected to spring clamper oil cylinder open in usual through one-way hydraulic lock。
Further, described 5-linked valve group is made up of five 3-position 4-way hand-operated direction valves and overflow valve, is O type Median Function。
The beneficial effects of the utility model:
This utility model is to keep spindle-type drill maintaining simple, mechanical efficiency is high, power consumption is few, the advantage such as cheap be simultaneously introduced hydraulically powered walking function module, auxiliary supports module, make it realize higher integration and Mechanization Level on former basis, can thoroughly avoid the inconvenience that complete machine resettlement and dismounting bring。This utility model structural principle is simple and clear, simple to operation, failure rate is low, it is easy to maintenance。
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model。
In accompanying drawing, the left actuator port in the oil-in in P2-two hand-operated direction valve group, the oil return opening in T2-two hand-operated direction valve group, A2-two hand-operated direction valve group, the right actuator port in B2-two hand-operated direction valve group, M2-two hand-operated direction valve group pressure tap；Left actuator port in oil-in in P4-tetrad hand-operated direction valve group, the oil return opening in T4-tetrad hand-operated direction valve group, A4-tetrad hand-operated direction valve group, the right actuator port in B4-two hand-operated direction valve group；Left actuator port in oil-in in P5-5-linked hand-operated direction valve group, the oil return opening in T5-5-linked hand-operated direction valve group, A5-5-linked hand-operated direction valve group, the right actuator port in B5-two hand-operated direction valve group, M5-5-linked hand-operated direction valve group pressure tap；D1-main pump, D2-auxiliary pump；1-double-gear oil pump, 2-two hand-operated direction valve group, 2-1-the first Pressure gauge, the left running motor of 2-2-, the right running motor of 2-3-, 3-fuel tank, 3-1-oil absorption filter, 4-tetrad hand-operated direction valve group, 4-1-feed cylinder, 4-2-hydraulic clutch oil cylinder, 4-3-chuck oil cylinder, 4-4-clamper oil cylinder, upper support cylinder, 5-5-rami posterior superior support oil cylinder, 5-6-lateral support oil cylinder before 5-5-linked hand-operated direction valve group, 5-1-the second Pressure gauge, the front lower support cylinder of 5-2-, 5-3-rami posterior inferior support oil cylinder, 5-4-。
Detailed description of the invention
As it is shown in figure 1, this utility model one crawler travel monoblock type vertical shaft tunnel drilling rig hydraulic system, the revolution of spindle-type drill neutral axis is machine driving, and therefore hydraulic system is without considering slew gear。Comprising hydraulic circuit, oil absorption filter 3-1 and fuel tank 3, described hydraulic circuit includes the first hydraulic circuit and the second hydraulic circuit；
First hydraulic circuit includes the main pump D1 of double-gear oil pump 1, two hand-operated direction valve groups 2, left running motor 2-1, right running motor 2-2。High pressure liquid force feed by oil pump main pump D1-export after through two hand-operated direction valve group 2 overflow valves adjust pressure to running motor rated operating pressure (force value by two reversal valve groups connect Pressure gauge show)。Two hand-operated direction valve groups 2 are the 3-position 4-way hand-operated direction valve and overflow valve composition that two panels is identical, adopt O type Median Function, when reversal valve is in middle position, hydraulic oil directly returns fuel tank 3 through oil return inlet T 2, being in hydraulic oil during end positions to export through left actuator port A2 respectively, right actuator port B2 returns。The two left actuator port A2 of hand-operated direction valve group 2 first are connected with left running motor 2-2 respectively with right actuator port B2, and the second left actuator port A2 is connected with right running motor 2-3 respectively with right actuator port B2。Two hand-operated direction valve group 2 oil return inlet T 2, left running motor 2-2, right running motor 2-3 are all connected with fuel tank 3。Left running motor 2-2, right running motor 2-3 are by hand-operated direction valve control, switch hand-operated direction valve left actuator port A2, the hydraulic oil flow direction of right actuator port B2 realizes rotating and the stopping of left and right running motor, reversal valve is in actuator port A2 during middle position, right actuator port B2 and all flows out without hydraulic oil, and left running motor 2-2, right running motor 2-3 hydraulic control one-way valve are closed realizing the skidding of left running motor 2-2, right running motor 2-3。Left running motor 2-2, right running motor 2-3 rotating simultaneously is rig forward-reverse, can realize turning to and turning round of rig when turning to difference or only one of which work。
Second hydraulic circuit includes the auxiliary pump D2 of double-gear oil pump 1,5-linked hand-operated direction valve group 5, tetrad hand-operated direction valve group 4, hydraulic lock, flow speed control valve, operating cylinder, 5-linked hand-operated direction valve group 5 and tetrad hand-operated direction valve group 4 and is connected in series。The each actuator port of 5-linked hand-operated direction valve group 5 connects rig front lower support cylinder 5-2, rami posterior inferior support oil cylinder 5-3, front upper support cylinder 5-4, rami posterior superior support oil cylinder 5-5, lateral support oil cylinder 5-6 respectively。The each actuator port of tetrad hand-operated direction valve group 4 controls feed cylinder 4-1, hydraulic clutch oil cylinder 4-2, chuck oil cylinder 4-3, clamper oil cylinder 4-4 respectively。First respectively adjusting tetrad hand-operated direction valve group 4 before rig work and 5-linked hand-operated direction valve group 5 overflow valve makes system pressure to rated operating pressure, the second Pressure gauge 5-1 is connected to the pressure tap M5 of 5-linked hand-operated direction valve group 5。5-linked hand-operated direction valve group 5 and tetrad hand-operated direction valve group 4 that the auxiliary pump D2 output hydraulic oil of double-gear oil pump 1 is concatenated return fuel tank 3。5-linked hand-operated direction valve group 5 is made up of five 3-position 4-way hand-operated direction valves and overflow valve, is O type Median Function。Front lower support cylinder 5-2, rami posterior inferior support oil cylinder 5-3, front upper support cylinder 5-4, rami posterior superior support oil cylinder 5-5 are connected to 5-linked hand-operated direction valve group 5 actuator port each through bidirectional hydraulic lock, the flexible of operating cylinder and location is controlled respectively by changing 5-linked hand-operated direction valve group 5 handle position, bidirectional hydraulic lock positions for the pressurize of operating cylinder, it is prevented that rig supports unstability。Tetrad hand-operated direction valve group 4 is made up of four 3-position 4-way hand-operated direction valves and overflow valve。First reversal valve is 3-position 4-way manual positioning reversal valve, actuator port is connected to feed cylinder 4-1 through flow speed control valve, control moving forward and backward of feed cylinder 4-1 when handle is positioned at diverse location respectively, flow speed control valve limit hydraulic oil flow and control the feed speed of oil cylinder。Latter three of tetrad hand-operated direction valve group 4 is 3-position 4-way spring reset hand-operated direction valve, connects hydraulic clutch oil cylinder 4-2, chuck oil cylinder 4-3, clamper oil cylinder 4-4 respectively。Second reversal valve connects hydraulic clutch oil cylinder 4-2 through bidirectional hydraulic lock, realizes the clutch operation of mechanical gear box by controlling cylinder action and then completes revolution and the stopping of vertical shaft。3rd reversal valve connecting chuck oil cylinder 4-3 realizes the opening operation to disc spring normally closed type chuck。Tetrad reversal valve is connected to spring clamper oil cylinder 4-4 open in usual through one-way hydraulic lock, controls the clamping of clamper and unclamps operation。
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this utility model。The multiple amendment of these embodiments be will be apparent from for those skilled in the art, and generic principles defined herein when without departing from spirit or scope of the present utility model, can realize in other embodiments。Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty。
Claims (4)
1. a vertical shaft type tunnel drilling rig hydraulic system voluntarily, it is characterised in that: comprising hydraulic circuit, oil absorption filter (3-1) and fuel tank (3), described hydraulic circuit includes the first hydraulic circuit and the second hydraulic circuit；
Described first hydraulic circuit includes the main pump (D1) of double-gear oil pump (1), two hand-operated direction valve groups (2), first Pressure gauge (2-1) and left running motor (2-2), right running motor (2-3), described two hand-operated direction valve groups (2) are provided with pressure tap (M2), oil-in (P2), oil return opening (T2), it is respectively arranged with left actuator port (A2) and right actuator port (B2) on described two hand-operated direction valve groups (2) are each, the main pump (D1) of described double-gear oil pump (1) is connected with two hand-operated direction valve groups (2), described two hand-operated direction valve groups (2) and left running motor (2-2), right running motor (2-3) is connected, described first Pressure gauge (2-1) is connected with the pressure tap (M2) of two hand-operated direction valve groups (2), described double-gear oil pump (1) connects fuel tank (3) by oil absorption filter (3-1)；
Described second hydraulic circuit includes the auxiliary pump (D2) of double-gear oil pump (1), 5-linked hand-operated direction valve group (5), tetrad hand-operated direction valve group (4), the second Pressure gauge (5-1), hydraulic lock, flow speed control valve and operating cylinder, and described 5-linked hand-operated direction valve group (5) and tetrad hand-operated direction valve group (4) are connected in series；Described tetrad hand-operated direction valve group (4) is provided with oil-in (P4) and oil return opening (T4), on described tetrad hand-operated direction valve group (4) is each, is respectively arranged with left actuator port (A4) and right actuator port (B4)；Described 5-linked hand-operated direction valve group (5) is provided with oil-in (P5), oil return opening (T5) and pressure tap (M5), on described 5-linked hand-operated direction valve group (5) is each, is respectively arranged with left actuator port (A5), right actuator port (B5)；Described operating cylinder includes the front lower support cylinder of rig (5-2), rami posterior inferior support oil cylinder (5-3), front upper support cylinder (5-4), rami posterior superior support oil cylinder (5-5), lateral support oil cylinder (5-6) and feed cylinder (4-1), hydraulic clutch oil cylinder (4-2), chuck oil cylinder (4-3), clamper oil cylinder (4-4) and connects；The actuator port that described 5-linked hand-operated direction valve group (5) is each connects the front lower support cylinder of rig (5-2), rami posterior inferior support oil cylinder (5-3), front upper support cylinder (5-4), rami posterior superior support oil cylinder (5-5), lateral support oil cylinder (5-6) respectively；The each actuator port of described tetrad hand-operated direction valve group respectively with feed cylinder (4-1), hydraulic clutch oil cylinder (4-2), chuck oil cylinder (4-3), clamper oil cylinder (4-4) connects, described second Pressure gauge (5-1) is connected with the pressure tap (M5) of 5-linked hand-operated direction valve group (5), the auxiliary pump (D2) of described double-gear oil pump (1) is connected with 5-linked hand-operated direction valve group (5), the auxiliary pump (D2) of described double-gear oil pump (1) connects fuel tank (3) by oil absorption filter (3-1), described front lower support cylinder (5-2), rami posterior inferior support oil cylinder (5-3), front upper support cylinder (5-4), rami posterior superior support oil cylinder (5-5) is connected each through the bidirectional hydraulic lock left actuator port (A5) with 5-linked valve group (5) and right actuator port (B5), left actuator port (A4) and the right actuator port (B4) of described tetrad hand-operated direction valve group (4) are connected to feed cylinder (4-1) through flow speed control valve。
2. a kind of vertical shaft type tunnel drilling rig hydraulic system voluntarily according to claim 1, it is characterised in that: described two hand-operated direction valve groups (2) are made up of the identical 3-position 4-way hand-operated direction valve of two panels and overflow valve；The left actuator port (A2) of two hand-operated direction valve groups (2) first is connected with left running motor (2-2) with right actuator port (B2), the left actuator port (A2) of second is connected with right running motor (2-3) with right actuator port (B2), and the oil return opening (T2) of two hand-operated direction valve groups (2), left running motor (2-2), right running motor (2-3) all connect with fuel tank。
3. a kind of vertical shaft type tunnel drilling rig hydraulic system voluntarily according to claim 1, it is characterized in that: described tetrad hand-operated direction valve group (4) is made up of four 3-position 4-way hand-operated direction valves and overflow valve, first hand-operated direction valve is 3-position 4-way manual positioning reversal valve, and the first hand-operated direction valve is connected to feed cylinder (4-1) through flow speed control valve；After quadruple valve group, three hand-operated direction valves are 3-position 4-way spring reset hand-operated direction valve, second hand-operated direction valve connects hydraulic clutch oil cylinder (4-2) through bidirectional hydraulic lock, 3rd hand-operated direction valve connecting chuck oil cylinder (4-3), tetrad is connected to spring clamper oil cylinder (4-4) open in usual through one-way hydraulic lock。
4. a kind of vertical shaft type tunnel drilling rig hydraulic system voluntarily according to claim 1, it is characterised in that: described 5-linked valve group is made up of five 3-position 4-way hand-operated direction valves and overflow valve, is O type Median Function。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521123819.3U CN205331088U (en) | 2015-12-31 | 2015-12-31 | Vertical shaft type is gallery rig hydraulic system by oneself |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521123819.3U CN205331088U (en) | 2015-12-31 | 2015-12-31 | Vertical shaft type is gallery rig hydraulic system by oneself |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205331088U true CN205331088U (en) | 2016-06-22 |
Family
ID=56313608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521123819.3U Expired - Fee Related CN205331088U (en) | 2015-12-31 | 2015-12-31 | Vertical shaft type is gallery rig hydraulic system by oneself |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205331088U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050767A (en) * | 2016-06-27 | 2016-10-26 | 湖南创远高新机械有限责任公司 | Upper and lower four-top-support type fixing system of underground drilling machine |
| CN108035930A (en) * | 2018-01-15 | 2018-05-15 | 中煤科工集团重庆研究院有限公司 | The directional drilling machine power head and brake hydraulic system of logic-based control |
| CN109060541A (en) * | 2018-06-22 | 2018-12-21 | 中国十七冶集团有限公司 | A kind of steel-concrete combination beam detection device and its application method |
-
2015
- 2015-12-31 CN CN201521123819.3U patent/CN205331088U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050767A (en) * | 2016-06-27 | 2016-10-26 | 湖南创远高新机械有限责任公司 | Upper and lower four-top-support type fixing system of underground drilling machine |
| CN106050767B (en) * | 2016-06-27 | 2018-02-06 | 湖南创远高新机械有限责任公司 | Four shore formula fixed system above and below a kind of drifter drill for underground |
| CN108035930A (en) * | 2018-01-15 | 2018-05-15 | 中煤科工集团重庆研究院有限公司 | The directional drilling machine power head and brake hydraulic system of logic-based control |
| CN108035930B (en) * | 2018-01-15 | 2023-08-22 | 中煤科工集团重庆研究院有限公司 | Directional drilling machine power head and brake hydraulic system based on logic control |
| CN109060541A (en) * | 2018-06-22 | 2018-12-21 | 中国十七冶集团有限公司 | A kind of steel-concrete combination beam detection device and its application method |
| CN109060541B (en) * | 2018-06-22 | 2020-10-23 | 中国十七冶集团有限公司 | Steel concrete composite beam detection device and application method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101408107B (en) | Energy-saving type shield propulsion hydraulic system by using zone control | |
| CN205331088U (en) | Vertical shaft type is gallery rig hydraulic system by oneself | |
| CN204590113U (en) | Medium-sized multi-way valve of hydraulic excavator group | |
| CN201288566Y (en) | Energy-saving shield advance hydraulic system employing zone control | |
| CN202788599U (en) | Rock drilling control system for rock drill | |
| CN103075101B (en) | Mining multi-logical protection loop and multi-linkage functional drill hydraulic system | |
| CN108999826A (en) | Raise boring machine multifunction hydraulic integrates valve group | |
| CN104343433A (en) | Full-hydraulic adaptive coupling control loop for rotation and propelling of rock drilling machine and control method | |
| CN205423366U (en) | Power unit type full -hydraulic drilling machine's double pump open circuit hydraulic system | |
| CN201037377Y (en) | Horizontal positioning drilling machine valve control interflow speeding up hydraulic system | |
| CN203050723U (en) | Variable frequency driving shield thrust hydraulic system | |
| CN105805074B (en) | A kind of the multichannel valve group and hydraulic crawler excavator at three pumps interflow | |
| CN102392840A (en) | Ascending and descending control system for main elevator of rotary drilling machine | |
| CN204704173U (en) | The fltting speed control system of hydraulic gate | |
| CN204283398U (en) | Rock drilling machine revolution advances all-hydraulic self adaptation coupling control loop | |
| CN108180178B (en) | Hydraulic system for reverse circulation engineering driller working device | |
| CN202970675U (en) | Hydraulic control system for rotary expansion device of rotary drilling rig | |
| CN201013351Y (en) | Driller blocking-proof hydraulic equipment | |
| CN203783996U (en) | Hydraulic control system for weed-cutting launch | |
| CN204082743U (en) | Rotary drilling rig and master winch promote preferential hydraulic control system | |
| CN206052834U (en) | Excavator rotation energy is reclaimed and utilizes system | |
| CN201794842U (en) | Precontrolled electric one-way speed regulating valve | |
| CN204024461U (en) | Drill power head drill autofeeder | |
| CN104675991A (en) | Hydraulic synchronous gear-shifting system | |
| CN207176794U (en) | Hydraulic system and engineering machinery |
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: 20160622 Termination date: 20181231 |