CN104590307A - Rope breakage safety protection device for mining car of inclined shaft - Google Patents
Rope breakage safety protection device for mining car of inclined shaft Download PDFInfo
- Publication number
- CN104590307A CN104590307A CN201510058945.3A CN201510058945A CN104590307A CN 104590307 A CN104590307 A CN 104590307A CN 201510058945 A CN201510058945 A CN 201510058945A CN 104590307 A CN104590307 A CN 104590307A
- Authority
- CN
- China
- Prior art keywords
- wheel
- braking
- brake
- brake pawl
- wedge
- 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.)
- Granted
Links
- 238000005065 mining Methods 0.000 title abstract 6
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000004044 response Effects 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 208000033999 Device damage Diseases 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H7/00—Brakes with braking members co-operating with the track
- B61H7/12—Grippers co-operating frictionally with tracks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H1/00—Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a rope breakage safety protection device for a mining car of an inclined shaft. The device consists of two sets of braking devices with the same structure, wherein the two sets of braking devices correspond to front and rear wheels of the mining car respectively, and each set of braking device consists of a speed control device, a wheel quioning device and a rail quioning device; the speed control devices consist of braking pawls controlled by the speed of the wheels through centrifugal flail blocks; the wheel quioning devices consist of brake levers controlled by the braking pawls and braking wedge blocks; the rail quioning device consist of rail encircling blocks pulled by the braking wedge blocks through braking triggering ropes. The safety protection device has the advantages that the speed of the mining car is used as a starting signal, and the device can quickly response; in case of rope breakage, the wheel quioning devices and the rail quioning devices simultaneously act, so that double safety is provided; the device also has a safety protection function for the leftward and rightward movement rope breakage of the mining car and disconnection between mining cars; the device is compact in structure, light in weight and small in size.
Description
Technical field
The present invention relates to mine safety device, particularly a kind of coal mine inclined shaft mine car disconnected rope safety guard.
Background technology
There is disconnected rope sport car when transporting personnel for preventing coal mine inclined shaft mine car and cause device damage and personnel casualty accidents, coal mine inclined shaft mine car all will arrange disconnected rope safety guard.Safety guard conventional at present mainly contains gravity wedge compact form and spring wedging type.Wherein gravity wedge compact form safety guard relies on the weight of weight to produce wedging power; its wedging power is constant, but the weight of required weight is comparatively large, and disconnected rope signal demand carries out detecting, changing; make weight action by actuating unit, complicated intermediate link makes its safety factor reduce.Spring wedging type safety guard relies on the restoring force of spring to produce wedging power; assurance device is wanted normally to run for a long time; require that the rigidity of spring wants large, and spring force needs to be converted on wedging pincers by more complicated mechanism, causes the scantling of structure of device larger.
Summary of the invention
For the defect that above-mentioned existing safety guard exists, the object of this invention is to provide a kind of disconnected rope safety guard that wheel fast and reliable can be made to brake and stop by the change of slope vehicle running velocity.
For achieving the above object, slope vehicle provided by the invention disconnected rope safety guard, the brake equipment identical by two nested structures of corresponding mine car front and back wheel installation respectively formed, and often overlaps brake equipment and is made up of speed control device, wheel wedge-caulking device and track wedge-caulking device;
Described speed control device comprise with wheel center is symmetrical, be arranged on brake pawl I in wheel face and brake pawl II; The front end of brake pawl I and brake pawl II is welded with centrifugal block for clutch use respectively, there is the ratchet rotating shaft of rotating for brake pawl at the center of brake pawl I and brake pawl II, the front end of brake pawl I is connected by gangbar with the rear end of brake pawl II, brake pawl I rear end is connected with centrifugal block for clutch use retracing spring one end by the pipe link that one end and its are hinged, and the other end of centrifugal block for clutch use retracing spring is fixed in wheel face;
Described wheel wedge-caulking device comprises braking voussoir, this braking voussoir and the braking voussoir guide groove sliding block joint being fixedly mounted on mine car frame, and the arc part of the corresponding wheel of braking voussoir is fixed with rubber detent sheet; The end of braking voussoir is connected with the scotch block reset spring that one end is fixed in mine car frame, be installed with on the lower edge in braking voussoir medial side face parallel with two wheel center lines, the U-lag of opening upwards, brake rod is equipped with in U-lag, the top edge of the corresponding wheel in brake rod one end, the other end is hinged with the brake rod locating dowel pin be fixedly mounted in U-lag, and brake rod top and one end are fixed on the brake rod retracing spring braked on voussoir and are connected;
Described track wedge-caulking device comprises embraces a rail block, this armful of rail block by being placed in track both sides, two voussoirs being supported by support spring form; Embrace rail block and be placed in the webge slot be fixed in mine car frame, embrace and be equipped with ball between rail block and webge slot, triggering restricts is connected with the braking voussoir in wheel wedge-caulking device by upper track adjusting wheel, lower track adjusting wheel and tension wheel by braking to embrace rail block.
Compared with prior art, the present invention break rope safety guard advantage be:
1, the fender guard signal that is startup optimization with mine car speed, during disconnected rope, speed of response is fast.
2, during disconnected rope, wheel wedge-caulking device and the action simultaneously of track wedge-caulking device, can realize double insurance, guarantee mine car snap catch and parking.
3, braking is triggered to restrict and is connected with braking voussoir with tension wheel by track adjusting wheel, can avoid triggering rope absent-mindedness, make plant running stable, smooth, guarantees wheel wedge-caulking device and track wedge-caulking device realization interlock.
4, symmetrical protection device for installing in front and back wheel, can realize the safety protection function of the separated connection of mine car left and right way moving breaking rope protecting and mine car.
5, apparatus structure is compact, lightweight, and volume is little.
Accompanying drawing explanation
Fig. 1 be slope vehicle of the present invention break rope safety guard structural representation;
Fig. 2 is the schematic perspective view of wheel wedge-caulking device in Fig. 1;
Fig. 3 is the relative position schematic diagram of Fig. 2 wheel wedge-caulking device and wheel;
Fig. 4 is A-A cutaway view in Fig. 1;
Fig. 5 is B-B cutaway view in Fig. 1 (track wedge-caulking device schematic diagram);
Fig. 6 is the relative position schematic diagram of Fig. 5 track wedge-caulking device and track.
In figure: 1-mine car frame, the upper track adjusting wheel of 2-, 3-braking triggers rope, 4-tensioning spring, 5-tension wheel, track adjusting wheel under 6-, 7-webge slot, 8-wheel, 9-centrifugal block for clutch use retracing spring, 10-brake pawl I, the rotating shaft of 11-brake pawl, 12-centrifugal block for clutch use, 13-gangbar, 14-brake pawl II, 15-brake rod, 16-U shape groove, 17-screw, 18-brake rod retracing spring, 19-brake rod locating dowel pin, 20-rubber detent sheet, 21-brakes voussoir, 22-brakes voussoir guide groove, 23-scotch block reset spring, 24-ball, 25-embraces rail block, 26-support spring, 27-track.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, slope vehicle of the present invention disconnected rope safety guard, the two cover brake equipments arranged by corresponding mine car front and back wheel 8 are formed.Two cover brake device structures are identical, share braking voussoir 21 symmetry and install.Often overlap fender guard to be made up of speed control device, wheel wedge-caulking device and track wedge-caulking device respectively.
Wherein speed control device comprise with wheel center is symmetrical, be arranged on brake pawl I 10 in wheel face and brake pawl II 14.The front end of brake pawl I and brake pawl II is welded with centrifugal block for clutch use 12 respectively, there is the ratchet rotating shaft 11 of rotating for brake pawl at the center of brake pawl I and brake pawl II, the front end of brake pawl I is connected by gangbar 13 with the rear end of brake pawl II, the rear end of brake pawl I is connected with centrifugal block for clutch use retracing spring 9 one end by the pipe link that one end and its are hinged, and the other end of centrifugal block for clutch use retracing spring is fixed in wheel face.
Described wheel wedge-caulking device comprises braking voussoir 21, and this braking voussoir is made by metal material, and two cover brake equipments of corresponding front and back wheel share one piece of braking voussoir (as shown in Figure 1).As shown in Figures 2 and 3, the position of the corresponding wheel top edge of braking voussoir 21 is arc, and it is connected with rubber detent sheet 20 sulfuration by spraying binder.As shown in Figure 1 and Figure 4, mine car frame 1 fixedly mounts with screw 17 the braking voussoir guide groove 22 that there is T-shaped slideway inside, the T-shaped slide block on braking voussoir top is placed in the T-shaped slideway of braking voussoir guide groove, make the two form sliding block joint, braking voussoir can horizontally slip in the T-shaped slideway of braking voussoir guide groove.As shown in Figure 1, the end of braking voussoir is connected (this retracing spring resets after braking voussoir brake off) with the scotch block reset spring 23 that one end is fixed in mine car frame.As shown in Figure 2, parallel with two wheel center lines along welding at braking voussoir medial side face lower, the U-lag 16 of opening upwards, brake rod 15 is set in U-lag, one end of brake rod is corresponding with the top edge of wheel, the other end and a brake rod locating dowel pin 19 be fixedly mounted in U-lag hinged, top and one end of brake rod are fixed on the brake rod retracing spring 18 braked on voussoir and are connected.
Composition graphs 1, Fig. 5 and Fig. 6, track wedge-caulking device comprises installation armful rail block 25 in orbit, this armful of rail block is made up of two voussoirs being positioned at track 27 both sides, supported by support spring 26 between two voussoirs, embrace rail block and be placed in the webge slot 7 be fixedly connected with mine car frame, embrace and be equipped with ball 24 between rail block and webge slot, embrace rail block and trigger the tension wheel 5 that controlled by lower track adjusting wheel 6, tensioning spring 4 of rope 3 be connected with the braking voussoir in wheel wedge-caulking device with upper track adjusting wheel 2 by braking.
The principle of work of above-mentioned safety guard is:
If mine car moves right in Fig. 1, wheel clockwise direction rotates, when there is disconnected rope in mine car, mine car moves right speed to be accelerated, wheel produces larger centnifugal force, centrifugal block for clutch use wherein in Fig. 1 on left side wheel braking ratchet under the influence of centrifugal force, brake pawl is rotated clockwise along centnifugal force tangential direction around ratchet rotating shaft, after mine car reaches certain speed, brake pawl II on the wheel of the left side goes to its front end and contacts (now brake pawl II makes centrifugal block for clutch use retracing spring be compressed by gangbar and brake pawl I) with the brake rod front end on the left side, to brake rod one instant impact to the right on the left side, meanwhile, brake pawl also synchronous axial system in a clockwise direction in the wheel of the right, after contacting with the brake rod on the right, to brake rod one instantaneous impact upwards on the right, the brake rod on the right is rotated counterclockwise, (after rotation, under the effect of brake rod retracing spring, recovering former horizontality) around the braking locating dowel pin hinged with it, now the brake rod on the left side moves right under instant impact effect, pull braking voussoir to move right in spacing guide groove, the rubber detent sheet on braking voussoir is contacted with the outer rim of left wheel, along with the mobile wedging left wheel of mine car, wheel is stopped operating, realizes mine car braking function.While braking voussoir moves right; the braking be connected with braking voussoir triggers rope and pulls an armful rail block; make to embrace rail block to be moved to the left along webge slot; two voussoirs embracing rail block are close to each other; with frictionally after guide rail contact by guide rail locking; wheel is shut down, realizes the double insurance of disconnected rope safety guard-safeguard thus.
The effect of the centrifugal block for clutch use retracing spring in speed control device is, disconnected rope pulls back mine car after repairing, and braking voussoir removes the braking to wheel, brake pawl II leaves brake rod, is set back by elastic force promotion brake pawl I and brake pawl II by the centrifugal block for clutch use retracing spring compressed.
Claims (1)
1. a slope vehicle disconnected rope safety guard, the brake equipment that two nested structures installed by the corresponding mine car front and back wheel (8) of difference are identical formed, and it is characterized in that: often overlap brake equipment and be made up of speed control device, wheel wedge-caulking device and track wedge-caulking device;
Described speed control device comprise with wheel center is symmetrical, be arranged on brake pawl I (10) in wheel face and brake pawl II (14); The front end of brake pawl I and brake pawl II is welded with centrifugal block for clutch use (12) respectively, there is the ratchet rotating shaft (11) of rotating for brake pawl at the center of brake pawl I and brake pawl II, the front end of brake pawl I is connected with the rear end of brake pawl II gangbar (13), brake pawl I rear end is connected with centrifugal block for clutch use retracing spring (9) one end by the pipe link that one end and its are hinged, and the other end of centrifugal block for clutch use retracing spring is fixed in wheel face;
Described wheel wedge-caulking device comprises braking voussoir (21), this braking voussoir and braking voussoir guide groove (22) sliding block joint being fixedly mounted on mine car frame (1), the arc part of the corresponding wheel of braking voussoir is fixed with rubber detent sheet (20); The end of braking voussoir is connected with the scotch block reset spring (23) that one end is fixed in mine car frame, be installed with on the lower edge in braking voussoir medial side face parallel with two wheel center lines, the U-lag (16) of opening upwards, brake rod (15) is equipped with in U-lag, the top edge of the corresponding wheel in brake rod one end, the other end is hinged with the brake rod locating dowel pin (19) be fixedly mounted in U-lag, and brake rod top and one end are fixed on the brake rod retracing spring (18) braked on voussoir and are connected;
Described track wedge-caulking device comprises embraces a rail block (25), this armful of rail block by being placed in track (27) both sides, two voussoirs being supported by support spring (26) form; Embrace rail block and be placed in the webge slot (7) be fixed in mine car frame, embrace and between rail block and webge slot, be equipped with ball (24), embrace rail block and be connected with the braking voussoir (21) in wheel wedge-caulking device by upper track adjusting wheel (2), lower track adjusting wheel (6) and tension wheel (5) by braking triggering rope (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510058945.3A CN104590307B (en) | 2015-02-04 | 2015-02-04 | A kind of disconnected rope safety guard of slope vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510058945.3A CN104590307B (en) | 2015-02-04 | 2015-02-04 | A kind of disconnected rope safety guard of slope vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104590307A true CN104590307A (en) | 2015-05-06 |
| CN104590307B CN104590307B (en) | 2017-03-15 |
Family
ID=53116463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510058945.3A Expired - Fee Related CN104590307B (en) | 2015-02-04 | 2015-02-04 | A kind of disconnected rope safety guard of slope vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104590307B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517023A (en) * | 2016-12-02 | 2017-03-22 | 河北华桥减速机有限公司 | Safety lock for overhead operating device |
| CN110395289A (en) * | 2019-07-19 | 2019-11-01 | 中国水利水电第十二工程局有限公司 | A kind of incline shaft transport vehicle armful rail Self tightening device |
| CN111284525A (en) * | 2020-03-31 | 2020-06-16 | 永贵能源开发有限责任公司新田煤矿 | Colliery anti-sliding device |
| CN111775997A (en) * | 2020-07-31 | 2020-10-16 | 蒙方葵 | Anti-falling rail car for building construction |
| CN111791911A (en) * | 2020-07-31 | 2020-10-20 | 蒙方葵 | Safe type construction conveyor |
| CN111806506A (en) * | 2020-07-31 | 2020-10-23 | 蒙方葵 | Construction transport vechicle |
| CN111959558A (en) * | 2020-07-23 | 2020-11-20 | 中国煤炭科工集团太原研究院有限公司 | Rope-breaking rail-holding braking protection device for coal mine underground ferry vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB265700A (en) * | 1925-11-17 | 1927-02-17 | William Edward Ireland | Improvements in or relating to the braking of vehicles and more especially of electric tramway and other cars |
| JPS5371407A (en) * | 1976-12-07 | 1978-06-24 | Hokuto Denki Kk | Runaway preventing apparatus for mine car |
| CN101659265A (en) * | 2009-09-23 | 2010-03-03 | 徐亲成 | Inclined roadway anti-running car tramcar |
| CN102673602A (en) * | 2012-06-09 | 2012-09-19 | 徐州工程学院 | Double-wedge block braking system for transportation monorail of inclined shaft mine car rail |
| CN103661478A (en) * | 2013-12-09 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Mine vehicle brake device |
| CN204432674U (en) * | 2015-02-04 | 2015-07-01 | 辽宁工程技术大学 | A kind of slope vehicle disconnected rope safety guard |
-
2015
- 2015-02-04 CN CN201510058945.3A patent/CN104590307B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB265700A (en) * | 1925-11-17 | 1927-02-17 | William Edward Ireland | Improvements in or relating to the braking of vehicles and more especially of electric tramway and other cars |
| JPS5371407A (en) * | 1976-12-07 | 1978-06-24 | Hokuto Denki Kk | Runaway preventing apparatus for mine car |
| CN101659265A (en) * | 2009-09-23 | 2010-03-03 | 徐亲成 | Inclined roadway anti-running car tramcar |
| CN102673602A (en) * | 2012-06-09 | 2012-09-19 | 徐州工程学院 | Double-wedge block braking system for transportation monorail of inclined shaft mine car rail |
| CN103661478A (en) * | 2013-12-09 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Mine vehicle brake device |
| CN204432674U (en) * | 2015-02-04 | 2015-07-01 | 辽宁工程技术大学 | A kind of slope vehicle disconnected rope safety guard |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517023A (en) * | 2016-12-02 | 2017-03-22 | 河北华桥减速机有限公司 | Safety lock for overhead operating device |
| CN106517023B (en) * | 2016-12-02 | 2019-03-22 | 河北华桥减速机有限公司 | A kind of safety lock of aerial platform |
| CN110395289A (en) * | 2019-07-19 | 2019-11-01 | 中国水利水电第十二工程局有限公司 | A kind of incline shaft transport vehicle armful rail Self tightening device |
| CN111284525A (en) * | 2020-03-31 | 2020-06-16 | 永贵能源开发有限责任公司新田煤矿 | Colliery anti-sliding device |
| CN111959558A (en) * | 2020-07-23 | 2020-11-20 | 中国煤炭科工集团太原研究院有限公司 | Rope-breaking rail-holding braking protection device for coal mine underground ferry vehicle |
| CN111775997A (en) * | 2020-07-31 | 2020-10-16 | 蒙方葵 | Anti-falling rail car for building construction |
| CN111791911A (en) * | 2020-07-31 | 2020-10-20 | 蒙方葵 | Safe type construction conveyor |
| CN111806506A (en) * | 2020-07-31 | 2020-10-23 | 蒙方葵 | Construction transport vechicle |
| CN111791911B (en) * | 2020-07-31 | 2021-10-15 | 蒙方葵 | Safe type construction conveyor |
| CN111806506B (en) * | 2020-07-31 | 2021-10-29 | 黄河养护集团有限公司 | Construction transport vechicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104590307B (en) | 2017-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104590307A (en) | Rope breakage safety protection device for mining car of inclined shaft | |
| CN201330070Y (en) | Belt break catching apparatus for belt conveyor | |
| CN203450987U (en) | Elevator speed limiter | |
| CN203545377U (en) | Machine-room-free one-way speed limiter | |
| CN204432674U (en) | A kind of slope vehicle disconnected rope safety guard | |
| CN1824599A (en) | Bidirection overspeed protective device of elevator | |
| CN112373442A (en) | Stall protection arrester wire device and stall protection device of trackless rubber-tyred vehicle | |
| CN103407855A (en) | Elevator speed governor | |
| CN114561889A (en) | Stall protection device for trackless rubber-tyred vehicle | |
| CN102963851B (en) | The brake gear of sliding hopper and use the aerial ladder of brake gear of this sliding hopper | |
| CN205044740U (en) | Unpowered tool car of magnetic suspension track | |
| KR100770349B1 (en) | Quick breaker of unloader | |
| CN104495554A (en) | Elevator car roof maintenance safety protecting device | |
| CN105109514A (en) | Hook-brake type mine car | |
| US3232382A (en) | Workman hoisting machine | |
| CN103693408A (en) | Belt breakage protection system for belt conveyor | |
| CN205997891U (en) | Unidirectional disc spring brake type mine car with middle braking rail | |
| CN205997893U (en) | Two-way double track disc spring brake type mine car | |
| CN208021479U (en) | A kind of intercept type parking anti-slip device | |
| CN102367149A (en) | Constant-force friction type additional braking safety device for ladder | |
| CN202249060U (en) | Anti-falling device for stereo garage and stereo garage with anti-falling device | |
| CN201756331U (en) | Electromagnetic broken belt catcher | |
| CN204871054U (en) | Couple braking formula mine car | |
| CN205997892U (en) | Two-way disc spring brake type mine car with middle braking rail | |
| CN102659008A (en) | Safety falling protector for industrial elevator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20170315 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |