CN105346579A - Electric cart - Google Patents
Electric cart Download PDFInfo
- Publication number
- CN105346579A CN105346579A CN201510709734.1A CN201510709734A CN105346579A CN 105346579 A CN105346579 A CN 105346579A CN 201510709734 A CN201510709734 A CN 201510709734A CN 105346579 A CN105346579 A CN 105346579A
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- CN
- China
- Prior art keywords
- brake
- button
- control arm
- directional control
- electrically driven
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/0026—Propulsion aids
- B62B5/0033—Electric motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/08—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving tiltably-mounted containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/0026—Propulsion aids
- B62B5/0069—Control
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
Abstract
The invention relates to the technical field of engineering machinery, in particular to an electric cart. The electric cart comprises a power system, a steering operating arm, a steering wheel, a cart body, a bearing wheel and a transmission shaft. The steering operating arm and the steering wheel are arranged at the front end of the cart body and connected. The bearing wheel is arranged on the lower rear portion of the cart body. The power system comprises a speed control handle, an advancing-retracting change-over switch, a controller, a motor and a battery. The speed control handle, the advancing-retracting change-over switch, the controller and the motor are sequentially electrically connected. The battery is electrically connected with the controller. The motor is connected with the bearing wheel through the transmission shaft. The advancing-retracting change-over switch and the speed control handle are arranged on the steering operating arm. The electric cart has the beneficial effects of being simple in structure, convenient to use, high in automation degree and capable of saving labor and improving working efficiency greatly.
Description
Technical field
The present invention relates to technical field of engineering machinery, be specifically related to a kind of electrically driven truck.
Background technology
Hutching is a kind of common construction machinery and equipment, is widely used in industrial application every aspect, especially at construction trade, and material such as transport cement, mortar etc.Tradition hutching, there is some deficiency following: 1, rely on manpower pull or promote, labour intensity is large, especially when trolley goes up a slope or Uneven road is smooth, more painstaking, add the work fatigue degree of staff, lengthen working hours, have impact on work efficiency to a certain extent, and job schedule; 2, during conversion direction, need by trolley unitary rotation direction, operation underaction is convenient, sometimes makes troubles to work.So need a kind of minimizing labour intensity badly, easy to use, save work-hours, the electrically driven truck of increasing work efficiency, therefore have developed the present invention.
Summary of the invention
The object of the invention is, for deficiency of the prior art, to provide a kind of electrically driven truck, it is simple that it has structure, and easy to use, degree of automation is high, saves labour power, substantially increase the feature of work efficiency.
Object of the present invention is achieved through the following technical solutions:
Using structural representation shown in Fig. 1 as direction reference, wheel flutter direction is left as the front of vehicle body, a kind of electrically driven truck, comprise power system, directional control arm, wheel flutter, vehicle body, BOGEY WHEEL and transmission shaft, directional control arm and wheel flutter are located at body structure, directional control arm is connected with wheel flutter, BOGEY WHEEL is located at the vehicle body back lower place, power system comprises the fast handle of control, forward-reverse change-over swith, controller, motor and battery, control fast handle, forward-reverse change-over swith, controller and motor are electrically connected successively, battery and controller are electrically connected, motor is connected with BOGEY WHEEL by transmission shaft, forward-reverse change-over swith and the fast handle of control are located on directional control arm.
Wherein, wheel flutter is iron core rubber wheel flutter.
Wherein, BOGEY WHEEL is inflation BOGEY WHEEL.
Wherein, also comprise wagon box and wagon box attaching parts, wagon box is located at above vehicle body by attaching parts.Wherein, wagon box attaching parts comprises movable part and the connecting element of movable connection, and movable part is fixedly connected with wagon box, and connecting element is installed on vehicle body.
Wherein, also comprise press-down type brake system, press-down type brake system comprises receives arm spring, brake actuating chain, brake connecting rod and strut member, receive arm spring one end and be fixed on vehicle body, the other end is connected with directional control arm bottom, and one end of described brake actuating chain is connected with directional control arm bottom, and the other end is connected with strut member, one end of brake connecting rod is connected with strut member, and the other end is connected with the brake gear of BOGEY WHEEL.During installation, strut member is installed on the vehicle body of electronic trolley movably, mainly play the effect supporting brake actuating chain and brake connecting rod, the state making brake actuating chain and brake connecting rod can not present straight line to be connected, the power acting on directional control arm is better sent to and pulls brake actuating chain, and then drive brake connecting rod, press down directional control arm, directional control arm bottom tilts and pulls brake actuating chain, brake actuating chain drives brake connecting rod, brake connecting rod starts the brake gear of BOGEY WHEEL, realize power interruption braking, receipts arm spring plays and directional control arm is not easily shifted, the effect of steady reset, this press-down type brake system is simple to operate, fast effectively, add safety of the present invention and convenience.
Wherein, brake actuating chain is provided with retarding spring, retarding spring shrinks the brake actuating chain of a part, brake chain part corresponding to retarding spring is breathing zone, the brake actuating chain of remainder is drive area, under retarding spring contraction state, the length summation of breathing zone and drive area is greater than the length summation of retarding spring and drive area.When brake actuating chain is not stretching, enough pulling force cannot be provided to pull brake connecting rod, then cannot start press-down type brake, when brake actuating chain not being arranged retarding spring, brake actuating chain is in straight configuration all the time, press down directional control arm by a small margin and just can pull brake actuating chain, and pull brake connecting rod by brake actuating chain; Brake actuating chain is provided with breathing zone, with retarding spring with the use of, namely before breathing zone is not stretched completely, form a direction regulatory region, directional control arm can be pressed down by a relatively large margin, and can not power interruption braking, what user of service can regulate directional control arm at direction regulatory region as required presses down direction, realizes traction walking; Direction regulatory region is exceeded when directional control arm presses down direction, breathing zone is stretched, and namely brake actuating chain recovers straight configuration, then continues to press down directional control arm and then start power interruption braking, namely form a power-off district, directional control arm presses to power-off district all can start power interruption braking; Visible, mode brake actuating chain being arranged retarding spring adds alerting ability of the present invention, and can not increase the complexity of structure.
Wherein, also comprise hand brake system, hand brake system comprises manual brake button, parking brake connecting rod, remove parking brake spring, fixed link and parking brake button, manual brake button is located at parking brake connecting rod top, removing parking brake spring one end is fixed on parking brake connecting rod, the other end is connected with manual brake button, fixed link is installed on directional control arm bottom, parking brake button by button stop end and dog point one-body molded, button end of stopping offers button and to stop groove, button is stopped under state, button is stopped to hold and is fastened on fixed link by detaining groove of stopping, dog point is provided with the first braking point and the second braking point, first braking point is connected with parking brake connecting rod, second braking point is connected with directional control arm.After electrically driven truck power interruption braking, directional control arm is pressed to the nadir in above-mentioned power-off district, press manual brake button, the button of parking brake button end of stopping is fastened on fixed link, locked by directional control arm, namely directional control arm cannot move up, and makes electrically driven truck be in power interruption braking state all the time by locking directional control arm, guarantor can not move up to control arm and cause power interruption braking inefficacy in casual situation, adds safety of the present invention; As removed parking brake, press down directional control arm, manual brake button ejects by parking brake spring, and parking brake button then can automatic spring, automatically terminates parking brake, convenient and swift.
Beneficial effect of the present invention: during use, open forward-reverse change-over swith, forward-reverse change-over swith is allocated to " advance " shelves, then electrically driven truck advances toward the front of vehicle body, forward-reverse change-over swith is allocated to " retrogressing " shelves, then electrically driven truck moves toward the rear of vehicle body, without the need to Manual-pushing, automatic walking, greatly save labour power, directional control arm can move up and down, and the forward/backward direction of wheel flutter is adjusted by the direction of moving direction control arm, because forward-reverse change-over swith and the fast handle of control are all arranged on directional control arm, one hand just can start electrically driven truck and controlled motion speed, structure of the present invention is simple, easy to operate, only need by the sense of motion of moving direction control arm just adjustable electrically driven truck, convenient flexibly, the present invention uses mains power, degree of automation is high, save labour power, the fatigue strength reduced a staff, improve work efficiency.
Accompanying drawing explanation
Utilize accompanying drawing to be described further invention, but the embodiment in accompanying drawing does not form any limitation of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.
Fig. 1 is the structural representation of a kind of electrically driven truck of the present invention;
Fig. 2 is the back view of a kind of electrically driven truck of the present invention;
Fig. 3 is the connection structure schematic diagram of power system;
Fig. 4 is the structural representation of press-down type brake system;
Fig. 5 is the structural representation of hand brake system;
Fig. 6 is the structural representation of the parking brake button in Fig. 5 hand brake system;
Fig. 7 is the front elevation of directional control arm;
Fig. 8 is the structural representation of wagon box attaching parts;
Fig. 9 is the lateral plan of Fig. 8;
Figure 10 is the constitution diagram that directional control arm presses to direction regulatory region and power-off district;
Figure 11 is that wagon box is turned over the constitution diagram of 90 °.
Detailed description of the invention
The invention will be further described with the following Examples.
As illustrated in fig. 1 and 2, in the present embodiment, a kind of electrically driven truck comprises power system 1, directional control arm 2, wheel flutter 3, vehicle body 4, BOGEY WHEEL 5 and transmission shaft 8, directional control arm 2 and wheel flutter 3 are located at vehicle body 4 front end, in the present embodiment, directional control arm 2 is connected with wheel flutter 3 by bearing, BOGEY WHEEL 5 is located at vehicle body 4 back lower place, power system 1 comprises the fast handle 11 of control, forward-reverse change-over swith 12, controller 13, motor 14 and battery 15, control fast handle 11, forward-reverse change-over swith 12, controller 13 and motor 14 are electrically connected successively, battery 15 and controller 13 are electrically connected, motor 14 is connected with BOGEY WHEEL 5, forward-reverse change-over swith 11 and the fast handle 12 of control are located on directional control arm 2.
During use, open forward-reverse change-over swith 12, forward-reverse change-over swith 12 is allocated to " advance " shelves, then electrically driven truck advances toward the front of vehicle body 4, forward-reverse change-over swith 12 is allocated to " retrogressing " shelves, then electrically driven truck moves toward the rear of vehicle body 4, without the need to Manual-pushing, automatic walking, greatly save labour power, directional control arm 2 can move up and down, and the forward/backward direction of wheel flutter is adjusted by the direction of moving direction control arm 2, because forward-reverse change-over swith 12 and the fast handle 11 of control are all arranged on directional control arm 2, one hand just can start electrically driven truck and controlled motion speed.
Wherein, wheel flutter 3 is iron core rubber wheel flutter, and iron core rubber wheel flutter abrasionproof scuff, can not be punctured by iron nail or sharp-pointed object, increase durability of the present invention.
Wherein, BOGEY WHEEL 5 has certain elasticity for inflation BOGEY WHEEL, inflation BOGEY WHEEL, can slow down the trolley of heavy duty and the impulsive force on ground, reduce the degree of jolting in transportation.
In the present embodiment, also comprise wagon box 6 and wagon box attaching parts 7, wagon box 6 is installed on above vehicle body 4 by wagon box attaching parts 7.Wherein, wagon box attaching parts 7 comprises movable part 71 and the connecting element 72 of movable connection, in the present embodiment, movable part 71 is flexibly connected with connecting element 72 by bearing pin, movable part 71 can rotate 0-90 ° of angle to the left or to the right relative to connecting element 72, movable part 71 is fixedly connected with wagon box 6, and connecting element 72 is installed on vehicle body 4.In use procedure, when wagon box 6 needs upset, pull wagon box 6, movable part 71 rotates relative to connecting element 72, then wagon box 6 rotates along with movable part 71 and overturns, and with reference to shown in Figure 11, wagon box 6 is turned over the state of 90 °.
In the present embodiment, also comprise press-down type brake system 9, as shown in Figure 4, press-down type brake system 9 comprises receives arm spring 91, brake actuating chain 92, strut member 95 and brake connecting rod 93, receive arm spring 91 one end and be fixed on vehicle body 4, the other end is connected with directional control arm 2 bottom, one end of brake actuating chain 92 is connected with directional control arm 2 bottom, the other end and strut member 95, brake connecting rod 93 one end is connected with strut member 95, the other end is connected with the brake gear of BOGEY WHEEL 5, and the brake gear in the present embodiment is stopped for rousing, and strut member 95 is installed on vehicle body 4 movably.Wherein, brake actuating chain 92 is provided with retarding spring 94, retarding spring 94 shrinks the brake actuating chain 92 of a part, brake actuating chain 92 part corresponding to retarding spring 94 is breathing zone 921, the brake actuating chain 92 of remainder is drive area 922, under retarding spring 94 contraction state, breathing zone 921 is greater than the length summation of retarding spring 94 and drive area 922 with the length summation of drive area 922.In the present embodiment, the length of retarding spring 94 is 5cm, the length of breathing zone 921 is 8.5cm, with the face, directional control arm 2 place of non-starting state for reference plane, it is direction regulatory region 96 that directional control arm presses down within the scope of 0-32 °, can walking be drawn, exceed direction regulatory region 96 and press down for power-off district 97 within the scope of 0-18 ° again, start power interruption braking.
In the present embodiment, also comprise hand brake system 10, as illustrated in Figures 5 and 6, hand brake system 10 comprises manual brake button 101, parking brake connecting rod 102, remove parking brake spring 103, fixed link 104 and parking brake button 105, manual brake button 101 is located at parking brake connecting rod 102 top, removing parking brake spring 103 one end is fixed on parking brake connecting rod 102, the other end is connected with manual brake button 101, as shown in Figure 7, fixed link 104 is installed on directional control arm 2 bottom, parking brake button 105 by button stop end 1051 and dog point 1052 one-body molded, button end 1051 of stopping offers button and to stop groove 10511, button is stopped under state, button end 1051 of stopping is fastened on fixed link 104 by button groove 10511 of stopping, dog point 1052 is provided with the first braking point 10521 and the second braking point 10522, first braking point 10521 is connected with parking brake connecting rod 102, second braking point 10522 is connected with directional control arm 2.
After electrically driven truck power interruption braking, directional control arm 2 is pressed to the nadir in above-mentioned power-off district 97, the nadir in 18 ° of districts as shown in Figure 10, press manual brake button 101, the button of parking brake button 105 end 1051 of stopping is fastened on fixed link 104, directional control arm 2 is locked, namely directional control arm 2 cannot move up, electrically driven truck is made to be in power interruption braking state all the time by locking directional control arm 2, guarantor can not move up to control arm 2 and cause power interruption braking inefficacy in casual situation, adds safety of the present invention; As removed parking brake, press down directional control arm 2, manual brake button 101 ejects by parking brake spring 103, and 105, parking brake button can automatic spring, automatically terminates parking brake, convenient and swift.。
Structure of the present invention is simple, only need by the sense of motion of moving direction control arm 2 just adjustable electrically driven truck, easy to operate, convenient flexibly, the present invention uses mains power, and degree of automation is high, save labour power, the fatigue strength reduced a staff, improves work efficiency.
Finally should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; although done to explain to the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement, and not depart from essence and the scope of technical solution of the present invention.
Claims (8)
1. an electrically driven truck, it is characterized in that: comprise power system (1), directional control arm (2), wheel flutter (3), vehicle body (4), BOGEY WHEEL (5) and transmission shaft (8), described directional control arm (2) and wheel flutter (3) are located at vehicle body (4) front end, described directional control arm (2) is connected with wheel flutter (3), described BOGEY WHEEL (5) is located at vehicle body (4) back lower place, described power system (1) comprises the fast handle of control (11), forward-reverse change-over swith (12), controller (13), motor (14) and battery (15), the fast handle of described control (11), forward-reverse change-over swith (12), controller (13) and motor (14) are electrically connected successively, described battery (15) and controller (13) are electrically connected, described motor (14) is connected with BOGEY WHEEL (5) by transmission shaft (8), described forward-reverse change-over swith (11) and the fast handle of control (12) are located on directional control arm (2).
2. a kind of electrically driven truck according to claim 1, is characterized in that: described wheel flutter (3) is iron core rubber wheel flutter.
3. a kind of electrically driven truck according to claim 1, is characterized in that: described BOGEY WHEEL (5) is inflation BOGEY WHEEL.
4. a kind of electrically driven truck according to claim 1, is characterized in that: also comprise wagon box (6) and wagon box attaching parts (7), and described wagon box (6) is located at vehicle body (4) top by attaching parts (7).
5. a kind of electrically driven truck according to claim 4, it is characterized in that: described wagon box attaching parts (7) comprises movable part (71) and the connecting element (72) of movable connection, described movable part (71) is fixedly connected with described wagon box (6), and described connecting element (72) is installed on vehicle body (4).
6. a kind of electrically driven truck according to claim 1, it is characterized in that: also comprise press-down type brake system (9), described press-down type brake system (9) comprises receives arm spring (91), brake actuating chain (92), brake connecting rod (93) and strut member (95), vehicle body (4) is fixed in described receipts arm spring (91) one end, the other end is connected with directional control arm (2) bottom, one end of described brake actuating chain (92) is connected with directional control arm (2) bottom, the other end is connected with described strut member (95), described brake connecting rod (93) one end is connected with strut member (95), the other end is connected with the brake gear of BOGEY WHEEL (5).
7. a kind of electrically driven truck according to claim 6, it is characterized in that: described brake actuating chain (92) is provided with retarding spring (94), described retarding spring (94) shrinks the brake actuating chain (92) of a part, brake actuating chain (92) part corresponding to described retarding spring (94) is breathing zone (921), the brake actuating chain (92) of remainder is drive area (922), under described retarding spring (94) contraction state, described breathing zone (921) is greater than the length summation of retarding spring (94) and drive area (922) with the length summation of drive area (922).
8. according to the arbitrary described a kind of electrically driven truck of claim 6 or 7, it is characterized in that: also comprise hand brake system (10), described hand brake system (10) comprises manual brake button (101), parking brake connecting rod (102), remove parking brake spring (103), fixed link (104) and parking brake button (105), described manual brake button (101) is located at parking brake connecting rod (102) top, described releasing parking brake spring (103) one end is fixed on parking brake connecting rod (102), the other end is connected with described manual brake button (101), described fixed link (104) is installed on directional control arm (2) bottom, described parking brake button (105) by button stop end (1051) and dog point (1052) one-body molded, described button end (1051) of stopping offers button and to stop groove (10511), button is stopped under state, described button end (1051) of stopping is fastened on fixed link (104) by button groove (10511) of stopping, described dog point (1052) is provided with the first braking point (10521) and the second braking point (10522), described first braking point (10521) is connected with parking brake connecting rod (102), described second braking point (10522) is connected with directional control arm (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510709734.1A CN105346579B (en) | 2015-10-28 | 2015-10-28 | A kind of electrically driven truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510709734.1A CN105346579B (en) | 2015-10-28 | 2015-10-28 | A kind of electrically driven truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105346579A true CN105346579A (en) | 2016-02-24 |
| CN105346579B CN105346579B (en) | 2018-11-20 |
Family
ID=55322698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510709734.1A Expired - Fee Related CN105346579B (en) | 2015-10-28 | 2015-10-28 | A kind of electrically driven truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105346579B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109466400A (en) * | 2018-10-31 | 2019-03-15 | 安徽科信矿山机械制造有限公司 | A kind of small-sized automatic bucket-tipping device of ore extraction transport |
| CN110723174A (en) * | 2019-10-24 | 2020-01-24 | 江苏圣拉克建材有限公司 | A electronic shallow for building engineering |
| US20220289263A1 (en) * | 2019-11-08 | 2022-09-15 | Techtronic Cordless Gp | Electric handcart |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3989116A (en) * | 1974-10-29 | 1976-11-02 | Fujikiyo Hirano | Battery-powered cart |
| US6508479B1 (en) * | 2001-08-28 | 2003-01-21 | Shin Yeh Enterprise Co., Ltd. | Wagon with wheel braking device |
| CN201176174Y (en) * | 2007-12-07 | 2009-01-07 | 江苏苏美达五金工具有限公司 | Multifunction electric porter |
| CN203306641U (en) * | 2013-06-09 | 2013-11-27 | 江西鸥迪铜业有限公司 | Electric power-assisted vehicle-pushing equipment for tubes and sticks |
| CN204341595U (en) * | 2014-10-20 | 2015-05-20 | 何韧 | A kind of wheeled pallet and traction piece thereof |
| CN205220755U (en) * | 2015-10-28 | 2016-05-11 | 东莞市久能机械有限公司 | Electric cart |
-
2015
- 2015-10-28 CN CN201510709734.1A patent/CN105346579B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3989116A (en) * | 1974-10-29 | 1976-11-02 | Fujikiyo Hirano | Battery-powered cart |
| US6508479B1 (en) * | 2001-08-28 | 2003-01-21 | Shin Yeh Enterprise Co., Ltd. | Wagon with wheel braking device |
| CN201176174Y (en) * | 2007-12-07 | 2009-01-07 | 江苏苏美达五金工具有限公司 | Multifunction electric porter |
| CN203306641U (en) * | 2013-06-09 | 2013-11-27 | 江西鸥迪铜业有限公司 | Electric power-assisted vehicle-pushing equipment for tubes and sticks |
| CN204341595U (en) * | 2014-10-20 | 2015-05-20 | 何韧 | A kind of wheeled pallet and traction piece thereof |
| CN205220755U (en) * | 2015-10-28 | 2016-05-11 | 东莞市久能机械有限公司 | Electric cart |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109466400A (en) * | 2018-10-31 | 2019-03-15 | 安徽科信矿山机械制造有限公司 | A kind of small-sized automatic bucket-tipping device of ore extraction transport |
| CN110723174A (en) * | 2019-10-24 | 2020-01-24 | 江苏圣拉克建材有限公司 | A electronic shallow for building engineering |
| US20220289263A1 (en) * | 2019-11-08 | 2022-09-15 | Techtronic Cordless Gp | Electric handcart |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105346579B (en) | 2018-11-20 |
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Granted publication date: 20181120 Termination date: 20191028 |
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