CN114069588A - Track traffic vehicle emergency pantograph-ascending pump external power supply control circuit - Google Patents
Track traffic vehicle emergency pantograph-ascending pump external power supply control circuit Download PDFInfo
- Publication number
- CN114069588A CN114069588A CN202111312153.6A CN202111312153A CN114069588A CN 114069588 A CN114069588 A CN 114069588A CN 202111312153 A CN202111312153 A CN 202111312153A CN 114069588 A CN114069588 A CN 114069588A
- Authority
- CN
- China
- Prior art keywords
- power supply
- external power
- vehicle
- emergency
- electric pump
- 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
- 230000000630 rising effect Effects 0.000 claims description 7
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for DC mains or DC distribution networks
- H02J1/001—Hot plugging or unplugging of load or power modules to or from power distribution networks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
- B60L5/22—Supporting means for the contact bow
- B60L5/28—Devices for lifting and resetting the collector
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
An emergency pantograph lifting pump external power supply control circuit of a rail transit vehicle is characterized in that an emergency pantograph lifting power supply socket and a key switch are arranged in a passenger room of the vehicle, the emergency pantograph lifting key switch is connected with the anodes of two external power supply switching contactor coils which are connected in parallel, and the cathodes of the two external power supply switching contactor coils are connected with the cathode of the emergency pantograph lifting power supply socket; normally closed contacts of the two external power supply switching contactors are connected between the electric pump control circuit breaker and a normally open contact of the electric pump contactor, and the normally open contacts of the two external power supply switching contactors are connected between the emergency pantograph power supply socket and the normally open contact of the electric pump contactor; the negative pole of the vehicle power supply is led between the normally open contacts of the two external power supply switching contactors. The invention realizes the switching between the normal power supply of the vehicle control power supply and the non-control power supply of the vehicle, provides the pantograph lifting control power supply and the power supply of the lifting pump for the train which can not normally lift the pantograph due to the total wind undervoltage and the battery undervoltage, and further improves the utilization efficiency of the vehicle.
Description
Technical Field
The invention relates to the technical field of rail transit vehicle pantograph control, in particular to an external power supply control circuit of an emergency pantograph lifting pump.
Background
In the actual operation of vehicle, when vehicle total wind pressure can not satisfy the pantograph and rise the bow requirement, in the design of existing project, realize the pantograph through two kinds of modes and rise the bow and receive the current: the system comprises a pedal pantograph lifting pump, a pantograph lifting pump and a pantograph lifting device, wherein the pedal pantograph lifting pump is arranged on a vehicle, is manually operated by drivers or maintenance personnel, and provides a wind source for the pantograph in a pedal inflation mode to lift the pantograph; and the vehicle is provided with an electric pantograph lifting pump, and the direct-current 110V power supply of the vehicle supplies power to the pantograph lifting pump and provides a wind source for the pantograph. Meanwhile, whether the wind pressure meets the pantograph lifting condition or not is judged through the pressure switch, and a driver is guided to lift the pantograph.
Disclosure of Invention
The invention aims to provide an external power supply scheme of an emergency pantograph lifting pump of a railway vehicle and a switching method of a vehicle power supply and an external power supply, which solve the problem of emergency pantograph lifting of the vehicle in a total wind low-voltage and non-power state, further reduce the risk of vehicle rescue, and improve the vehicle utilization rate and the operating efficiency of a main line.
In order to achieve the purpose, the invention provides an external power supply control circuit of an emergency pantograph-ascending pump of a rail transit vehicle, which comprises a vehicle power supply, an electric pump control circuit breaker, an electric pump contactor, an emergency electric pump and a pressure switch, and is characterized in that: an emergency pantograph lifting power supply socket and an emergency pantograph lifting key switch are arranged below a seat of a passenger room of the vehicle, which is close to a doorway, and are used for leading a direct current power supply on a platform to the vehicle; the emergency pantograph lifting key switch is connected with the anodes of the two parallel external power supply switching contactor coils, and the cathodes of the two parallel external power supply switching contactor coils are connected with the cathode of the emergency pantograph lifting power supply socket; normally closed contacts of the two external power supply switching contactors are connected between the electric pump control circuit breaker and a normally open contact of the electric pump contactor, and the normally open contacts of the two external power supply switching contactors are connected between the emergency pantograph power supply socket and the normally open contact of the electric pump contactor; the positive pole of the vehicle power supply is connected with the emergency pantograph rising key switch in series, and the negative pole of the vehicle power supply is led between the normally open contacts of the two external power supply switching contactors.
Under the condition that the vehicle control power supply normally supplies power, the two external power supply switching contactors are not electrified, and the vehicle power supply realizes control of the corresponding emergency electric pump through the normally closed contacts of the two external power supply switching contactors. Under the premise that the vehicle has no control power supply, the vehicle external control power supply is led onto the vehicle through the emergency pantograph lifting power supply socket, the emergency pantograph lifting key switch is operated, the two external power supply switching contactors are electrified, the normally open contacts of the two external power supply switching contactors are closed, and the normally closed contacts of the two external power supply switching contactors are disconnected, so that the vehicle control power supply is cut off, and the control of the external control power supply on the vehicle is realized.
The invention leads the platform direct current 110V power supply to the train, skillfully realizes the switching of the normal power supply of the vehicle control power supply and the non-control power supply of the vehicle in a mode of switching the contactor by the power supply socket and the key switch and the external power supply, and provides a pantograph lifting control power supply and a power supply of a lifting pump for the train which can not normally lift the pantograph due to the total wind undervoltage and the storage battery undervoltage. The method is an effective supplement to the two current schemes, and further improves the utilization efficiency of the vehicle. The scheme of the invention is applied to the field line vehicle of the Gelongland machine in Malaysia for the first time, and the effect is good through the verification of related test experiments.
Drawings
FIG. 1 is a schematic diagram of a vehicle power supply control path of an emergency pantograph-ascending pump power supply circuit;
fig. 2 is a schematic diagram of a control path of an external power supply of a vehicle of an emergency pantograph-ascending pump power supply circuit.
Detailed Description
Referring to fig. 1, the embodiment of the invention comprises a vehicle power supply, an electric pump control circuit breaker, an electric pump contactor, an emergency electric pump, a pressure switch, an emergency pantograph lifting power supply socket, an emergency pantograph lifting key switch, two external power supply switching contactors 1 and 2 which are connected in parallel, wherein the emergency pantograph lifting power supply socket and the emergency pantograph lifting key switch are arranged below a seat of a vehicle passenger room close to a doorway and used for leading a direct current power supply on a platform to a vehicle; the positive poles of the two parallel external power supply switching contactor coils are connected with the emergency pantograph lifting key switch, and the negative poles of the two parallel external power supply switching contactor coils are connected with the negative pole of the emergency pantograph lifting power supply socket; normally closed contacts of the two external power supply switching contactors are connected between the electric pump control circuit breaker and a normally open contact of the electric pump contactor, and the normally open contacts of the two external power supply switching contactors are connected between the emergency pantograph power supply socket and the normally open contact of the electric pump contactor; the negative pole of the vehicle power supply is led between the normally open contacts of the two external power supply switching contactors.
Under the condition that the vehicle power supply in fig. 1 works normally, the left vehicle power supply 101c supplies power to the electric pump contactor through the emergency rising bow key switch and the pressure switch which are connected in series; vehicle power 101b is connected with external power supply switching contactor 1 and external power supply switching contactor 2 normally closed contact through the electric pump control circuit breaker all the way on the right side, and the two pairs of normally open contacts of electric pump contactor are connected in series simultaneously, realize for emergent electric pump power supply. When the pressure switch detects that the pantograph rising pressure is lower than 6.55bar, the left side loop is conducted, the electric pump contactor is electrified, the two pairs of normally open contacts of the electric pump contactor in the right side loop are closed, the emergency electric pump is electrified, and air is pumped in a normal working mode. When the pressure switch detects that the pantograph rising pressure is higher than 7.35bar, the left side loop is disconnected, the electric pump contactor loses electricity, the two pairs of normally open contacts of the electric pump contactor in the right side loop are disconnected, the emergency electric pump loses electricity, and the electric pump stops pumping air.
Referring to fig. 2, according to the design scheme of the power supply of the emergency pantograph lifting pump, a signal power supply flow direction is controlled by an external power supply of the vehicle, and the circuit introduces an external power supply of the vehicle through an emergency pantograph lifting power supply socket arranged below a seat close to a doorway in a passenger compartment of the vehicle to provide an emergency power supply for an emergency electric pump of the vehicle, so that the aim of lifting a pantograph of the vehicle for emergency is fulfilled. An external power supply is introduced into a vehicle power supply 101a through an emergency rising bow power supply socket, and one path on the left side supplies power to an electric pump contactor, an external power supply switching contactor 1 and an external power supply switching contactor 2 through a series emergency rising bow key switch and a pressure switch; meanwhile, the external power supply 101a supplies power to the emergency electric pump through the normally open contacts of the external power supply switching contactor 1 and the external power supply switching contactor 2 which are connected in series and the two pairs of normally open contacts of the electric pump contactor. When the emergency bow-rising key switch is operated to the position of the contact 1.2, the wire number 102 is electrified; when the pressure switch detects that the pantograph-raising pressure is lower than 6.55bar, the left side loop is conducted, the electric pump contactor, the external power supply switching contactor 1 and the external power supply switching contactor 2 are powered on, the normally-open contacts of the upper loop external power supply switching contactor 1 and the external power supply switching contactor 2 are closed, the normally-closed contacts of the right loop external power supply switching contactor 1 and the external power supply switching contactor 2 are disconnected, isolation with the vehicle power supply loop is achieved, the normally-open contacts of the two pairs of electric pump contactors are closed, the emergency electric pump is powered on, and normal work pumps wind. When the pressure switch detects that the pantograph-raising pressure is higher than 7.35bar, the left-side loop is disconnected, the electric pump contactor, the external power supply switching contactor 1 and the external power supply switching contactor 2 lose power, the normally-open contacts of the external power supply switching contactor 1 and the external power supply switching contactor 2 in the upper-portion loop are disconnected, the normally-open contacts of the two pairs of electric pump contactors in the right-side loop are disconnected, the emergency electric pump loses power, and the electric pump stops pumping air.
The invention has the innovative point that the design scheme for switching the internal and external power supplies of the emergency pantograph lifting pump of the rail transit vehicle is innovatively realized through the matching design of the emergency pantograph lifting key and the switch, and the coil and the contact of the external power supply contactor. The design of the circuit is already carried out actual verification and test on the airport line train in Jilong slope, Malaysia, and the effect is good.
Element selection table:
| name (R) | Model number | Manufacturer of the product |
| Emergency bow-lifting key switch | XD6002-1/S0V750D/FT2 | EAO |
| External power |
LC1-D098FDC | SCHNEIDER |
| Electric pump contactor | LC1-DT20FDC | SCHNEIDER |
| Electric pump control circuit breaker | AD2S-Q8-LK-DN-D-NC-16-20 | EATON |
| Emergency electric pump | LP115 | KNORR |
Claims (2)
1. The utility model provides a track traffic vehicle emergency rises bow pump external power supply control circuit, includes vehicle power, electric pump control circuit breaker, electric pump contactor, emergent electric pump, pressure switch, its characterized in that: an emergency pantograph lifting power supply socket and an emergency pantograph lifting key switch are arranged on the vehicle, the emergency pantograph lifting key switch is connected with the positive poles of two parallel external power supply switching contactor coils, and the negative poles of the two parallel external power supply switching contactor coils are connected with the negative pole of the emergency pantograph lifting power supply socket; normally closed contacts of the two external power supply switching contactors are connected between the electric pump control circuit breaker and a normally open contact of the electric pump contactor, and the normally open contacts of the two external power supply switching contactors are connected between the emergency pantograph power supply socket and the normally open contact of the electric pump contactor; the positive pole of the vehicle power supply is connected with the emergency pantograph rising key switch in series, and the negative pole of the vehicle power supply is led between the normally open contacts of the two external power supply switching contactors.
2. The track traffic vehicle emergency pantograph-ascending pump external power supply control circuit according to claim 1, characterized in that: the emergency pantograph lifting power supply socket and the emergency pantograph lifting key switch are arranged below a seat of a vehicle passenger room close to a doorway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111312153.6A CN114069588B (en) | 2021-11-08 | 2021-11-08 | External power supply control circuit of emergency lift bow pump of rail transit vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111312153.6A CN114069588B (en) | 2021-11-08 | 2021-11-08 | External power supply control circuit of emergency lift bow pump of rail transit vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114069588A true CN114069588A (en) | 2022-02-18 |
| CN114069588B CN114069588B (en) | 2024-03-08 |
Family
ID=80274153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111312153.6A Active CN114069588B (en) | 2021-11-08 | 2021-11-08 | External power supply control circuit of emergency lift bow pump of rail transit vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114069588B (en) |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000045994A (en) * | 1998-12-31 | 2000-07-25 | 추호석 | Pantograph control circuit by earth switch |
| RU29620U1 (en) * | 2003-02-13 | 2003-05-20 | Открытое акционерное общество "Чебоксарский электроаппаратный завод" | Submersible Pump Control Station |
| JP2010213552A (en) * | 2009-03-12 | 2010-09-24 | Toyota Motor Corp | Power supply unit and failure detection method of the same |
| CN201754521U (en) * | 2010-03-19 | 2011-03-02 | 四川省君诺机械有限公司 | Power transformation and supply system |
| CN203005126U (en) * | 2012-12-07 | 2013-06-19 | 南车株洲电力机车有限公司 | Storage battery and pantograph tractive power supply system for urban rail vehicle |
| KR20140145439A (en) * | 2013-06-13 | 2014-12-23 | 현대로템 주식회사 | System and method for auto drop of pantograph |
| CN105083022A (en) * | 2015-05-28 | 2015-11-25 | 长春轨道客车股份有限公司 | Low-voltage power supply system for motor train unit |
| WO2016082648A1 (en) * | 2014-11-28 | 2016-06-02 | 中车青岛四方机车车辆股份有限公司 | Novel 25kv pantograph control circuit |
| CN106505722A (en) * | 2016-11-29 | 2017-03-15 | 中车长春轨道客车股份有限公司 | A kind of external Medium voltage power supply system of EMUs |
| CN106553552A (en) * | 2016-11-24 | 2017-04-05 | 株洲中车时代电气股份有限公司 | City rail vehicle pantograph and pantagraph current collector switching control system and trailer system |
| WO2017143808A1 (en) * | 2016-02-26 | 2017-08-31 | 中车青岛四方机车车辆股份有限公司 | Interlocking control device of multiple-unit train safety circuit |
| CN108749582A (en) * | 2018-08-01 | 2018-11-06 | 中车大连机车车辆有限公司 | Control method, device and the electric locomotive of electric locomotive power supply |
| CN109763950A (en) * | 2019-03-14 | 2019-05-17 | 上海地铁维护保障有限公司 | Electric train emergency rising bow electrodynamic pump |
| CN209305368U (en) * | 2018-08-15 | 2019-08-27 | 中车唐山机车车辆有限公司 | Pantograph control system |
| CN110803042A (en) * | 2018-07-18 | 2020-02-18 | 郑州宇通客车股份有限公司 | Charging bow control circuit and method |
| WO2020037774A1 (en) * | 2018-08-21 | 2020-02-27 | 中车南京浦镇车辆有限公司 | Pantograph remote control circuit for unmanned subway train |
| WO2020155629A1 (en) * | 2019-01-31 | 2020-08-06 | 中车株洲电力机车有限公司 | Power supply protection system for garage |
| CN112849220A (en) * | 2021-03-24 | 2021-05-28 | 中车株洲电力机车有限公司 | Urban rail vehicle storage battery feed prevention control method and system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101746273A (en) * | 2010-01-14 | 2010-06-23 | 南车株洲电力机车有限公司 | Electric air supply device for emergent lift of urban rail vehicle and control method corresponding to same |
| CN102991363B (en) * | 2012-12-07 | 2015-08-05 | 南车株洲电力机车有限公司 | A kind of storage battery of city rail vehicle and pantograph tractive power supply system |
| CN105790419B (en) * | 2016-03-09 | 2019-03-05 | 中车青岛四方机车车辆股份有限公司 | A kind of EMU auxiliary power supply |
-
2021
- 2021-11-08 CN CN202111312153.6A patent/CN114069588B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000045994A (en) * | 1998-12-31 | 2000-07-25 | 추호석 | Pantograph control circuit by earth switch |
| RU29620U1 (en) * | 2003-02-13 | 2003-05-20 | Открытое акционерное общество "Чебоксарский электроаппаратный завод" | Submersible Pump Control Station |
| JP2010213552A (en) * | 2009-03-12 | 2010-09-24 | Toyota Motor Corp | Power supply unit and failure detection method of the same |
| CN201754521U (en) * | 2010-03-19 | 2011-03-02 | 四川省君诺机械有限公司 | Power transformation and supply system |
| CN203005126U (en) * | 2012-12-07 | 2013-06-19 | 南车株洲电力机车有限公司 | Storage battery and pantograph tractive power supply system for urban rail vehicle |
| KR20140145439A (en) * | 2013-06-13 | 2014-12-23 | 현대로템 주식회사 | System and method for auto drop of pantograph |
| WO2016082648A1 (en) * | 2014-11-28 | 2016-06-02 | 中车青岛四方机车车辆股份有限公司 | Novel 25kv pantograph control circuit |
| CN105083022A (en) * | 2015-05-28 | 2015-11-25 | 长春轨道客车股份有限公司 | Low-voltage power supply system for motor train unit |
| WO2017143808A1 (en) * | 2016-02-26 | 2017-08-31 | 中车青岛四方机车车辆股份有限公司 | Interlocking control device of multiple-unit train safety circuit |
| CN106553552A (en) * | 2016-11-24 | 2017-04-05 | 株洲中车时代电气股份有限公司 | City rail vehicle pantograph and pantagraph current collector switching control system and trailer system |
| CN106505722A (en) * | 2016-11-29 | 2017-03-15 | 中车长春轨道客车股份有限公司 | A kind of external Medium voltage power supply system of EMUs |
| CN110803042A (en) * | 2018-07-18 | 2020-02-18 | 郑州宇通客车股份有限公司 | Charging bow control circuit and method |
| CN108749582A (en) * | 2018-08-01 | 2018-11-06 | 中车大连机车车辆有限公司 | Control method, device and the electric locomotive of electric locomotive power supply |
| CN209305368U (en) * | 2018-08-15 | 2019-08-27 | 中车唐山机车车辆有限公司 | Pantograph control system |
| WO2020037774A1 (en) * | 2018-08-21 | 2020-02-27 | 中车南京浦镇车辆有限公司 | Pantograph remote control circuit for unmanned subway train |
| WO2020155629A1 (en) * | 2019-01-31 | 2020-08-06 | 中车株洲电力机车有限公司 | Power supply protection system for garage |
| CN109763950A (en) * | 2019-03-14 | 2019-05-17 | 上海地铁维护保障有限公司 | Electric train emergency rising bow electrodynamic pump |
| CN112849220A (en) * | 2021-03-24 | 2021-05-28 | 中车株洲电力机车有限公司 | Urban rail vehicle storage battery feed prevention control method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114069588B (en) | 2024-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109094378B (en) | Pantograph remote control circuit of unmanned subway train | |
| CN109109851B (en) | Rail vehicle emergency braking safety loop circuit and rail vehicle | |
| CN206589704U (en) | A kind of city rail vehicle rising bow electromagnetic valve work control system | |
| CN110303943B (en) | Control method for high-voltage parallel system of double-branch power battery of pure electric rail locomotive | |
| AU2014314196A1 (en) | Method and device for supplying auxiliary air to a rail vehicle | |
| EP3968512A1 (en) | Drive system | |
| CN114069588A (en) | Track traffic vehicle emergency pantograph-ascending pump external power supply control circuit | |
| CN203611766U (en) | High-voltage safety interlocking system for electric automobile | |
| CN113954637B (en) | Railway vehicle emergency lifting bow switching method | |
| CN101746273A (en) | Electric air supply device for emergent lift of urban rail vehicle and control method corresponding to same | |
| CN112331504B (en) | Control circuit of bus breaker of railway vehicle | |
| CN112721636A (en) | Electric motor coach power supply system, electric motor coach and method | |
| CN110682927A (en) | Activation circuit and control method for tramcar cab | |
| CN212022641U (en) | Rail vehicle and ventilation control system thereof | |
| CN112124152B (en) | Power supply circuit and power supply control method for locomotive auxiliary system | |
| CN112297962B (en) | Bus breaker control method for subway vehicle in double current-collecting mode through dead zone | |
| CN209037396U (en) | A kind of high voltage distribution installation | |
| KR20060097244A (en) | Pantograph Lift Control System for Electric Vehicles | |
| CN101446282A (en) | Engine-air compressor electric control device | |
| CN117803562B (en) | Air compressor start-stop control circuit, system and method and rail transit vehicle | |
| CN214146123U (en) | Integrated control device for vehicle-mounted hydraulic system | |
| CN112977511B (en) | Rail train's air conditioning system control circuit and rail train | |
| CN221476753U (en) | Emergency traction device of overhead tourist car and overhead tourist car | |
| CN201970989U (en) | Electric automobile air compressor control system and control circuit | |
| CN212623698U (en) | Driving door spacing safety control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zou Hongwei Inventor after: Zhang Hongjun Inventor after: Chi Yang Inventor after: Zhang Guojun Inventor before: Zou Hongwei Inventor before: Chi Yang Inventor before: Zhang Guojun |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |