CN108248384A - The accelerator control device of vehicle - Google Patents
The accelerator control device of vehicle Download PDFInfo
- Publication number
- CN108248384A CN108248384A CN201810080764.4A CN201810080764A CN108248384A CN 108248384 A CN108248384 A CN 108248384A CN 201810080764 A CN201810080764 A CN 201810080764A CN 108248384 A CN108248384 A CN 108248384A
- Authority
- CN
- China
- Prior art keywords
- centrifugal
- gas
- change valve
- mouthfuls
- driven change
- 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
- 238000010586 diagram Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 206010001541 Akinesia Diseases 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 206010003671 Atrioventricular Block Diseases 0.000 description 1
- 208000010271 Heart Block Diseases 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
- B60K28/10—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle
- B60K28/14—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle responsive to accident or emergency, e.g. deceleration, tilt of vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
- B60K2031/0091—Speed limiters or speed cutters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
A kind of accelerator control device of vehicle, including gas bag, gas and oil door and throttle cylinder；The gas and oil door includes gas pedal, and P mouthfuls of the air inlet of gas and oil door is connected with gas bag；Further include centrifugal control mechanism, servomotor driven change valve and mounting bracket；The centrifugal control mechanism includes connection ring, spring and centrifugal-block；The connection ring is equipped with the sliding slot of radial direction, and the centrifugal-block is slidably connected in the sliding slot of connection ring, and one end of the spring is fixedly connected in the connection ring at the radial inner end of sliding slot, and the other end of spring is radially outwardly connected on centrifugal-block；The servomotor driven change valve is fixedly connected on mounting bracket and the idler wheel of servomotor driven change valve is in contact or is separated with centrifugal-block, P mouthfuls of the air inlet of servomotor driven change valve is connected with A mouthfuls of the execution mouth of gas and oil door, and A mouthfuls of the execution mouth of servomotor driven change valve 2 is connected with the rod chamber of throttle cylinder.The present invention can make to automatically cut off throttle during overspeed of vehicle.
Description
Technical field
The present invention relates to a kind of vehicle, more particularly to a kind of accelerator control device of vehicle.
Background technology
The accelerator control device of the vehicle of the prior art is as shown in figure 8, including gas bag 50, gas and oil door 51 and throttle cylinder
52, gas and oil door 51 includes gas pedal 51-1, and P mouthfuls of the air inlet of gas and oil door 51 is connected with gas bag 50, the execution mouth A of gas and oil door 51
Mouth is connected with the rod chamber of throttle cylinder 52.The piston rod of throttle cylinder 52 is fixedly connected with the Oil Switch on vehicle.When driving
When the person of sailing steps on the gas pedal 51-1 of gas and oil door 51, P mouthfuls of the air inlet of gas and oil door 51 is communicated with performing mouth A mouthfuls, gas bag 50
Pressed gas enters the rod chamber of throttle cylinder 52, and the piston rod of throttle cylinder 52 acts and the Oil Switch on vehicle is driven to move
Make, vehicle accelerates.The accelerator control device of this vehicle cannot automatically cut off throttle in overspeed of vehicle, in this way when vehicle has surpassed
Still when stepping on the gas, the travel speed of over-speed vehicles will continue to accelerate fast and driver, at this moment can be very dangerous.
Invention content
The Throttle Opening Control dress of the vehicle of throttle can be automatically cut off during it is an object of the invention to propose a kind of overspeed of vehicle
It puts.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：A kind of accelerator control device of vehicle, including gas
Packet, gas and oil door and throttle cylinder；The gas and oil door includes gas pedal, and P mouthfuls of the air inlet of gas and oil door is connected with gas bag；It further includes
Centrifugal control mechanism, servomotor driven change valve and mounting bracket；The centrifugal control mechanism includes connection ring, spring and centrifugal-block；It is described
Connection ring is equipped with the sliding slot of radial direction, and the centrifugal-block is slidably connected in the sliding slot of connection ring, and one end of the spring is fixed
It is connected in the connection ring at the radial inner end of sliding slot, the other end of spring is radially outwardly connected on centrifugal-block；The machine
Dynamic reversal valve is fixedly connected on mounting bracket and the idler wheel of servomotor driven change valve is in contact or is separated with centrifugal-block, servomotor driven change valve
P mouthfuls of air inlet connected with A mouthfuls of the execution mouth of gas and oil door, the rod chamber company for performing A mouthful of mouth and throttle cylinder of servomotor driven change valve 2
It is logical.
The servomotor driven change valve is fixedly connected on by bolt or screw on mounting bracket.
Baffle is further included, the baffle is welded to connect on mounting bracket.
The present invention has following good effect：（1）Since the connection ring of the present invention is equipped with the sliding slot of radial direction, centrifugal-block is slided
Dynamic to be connected in the sliding slot of connection ring, one end of spring is fixedly connected in the connection ring at the radial inner end of sliding slot, spring
The other end is radially outwardly connected on centrifugal-block；Servomotor driven change valve is fixedly connected on mounting bracket and the idler wheel of servomotor driven change valve
It is in contact or is separated with centrifugal-block, P mouthfuls of the air inlet of servomotor driven change valve is connected with A mouthfuls of the execution mouth of gas and oil door, motor-driven commutation
A mouthfuls of the execution mouth of valve 2 is connected with the rod chamber of throttle cylinder, due also to the present invention is in use, the connection ring of centrifugal control mechanism
It is fixedly connected on by bolt or screw on the wheel hub of the vehicle bridge of vehicle, thus works as overspeed of vehicle when driving, the wheel hub of vehicle bridge
Rotary speed will be accelerated, and the rotary speed of connection ring can also be accelerated.Centrifugal-block can overcome spring under the influence of centrifugal force
Spring force is moved radially outward, and pushing rolling wheels move spool, servomotor driven change valve commutation, makes P mouthfuls of the air inlet of servomotor driven change valve
It is not communicated with performing mouth A mouthfuls.Pressed gas in this way in gas bag cannot enter the rod chamber of throttle cylinder, the piston of throttle cylinder
Bar akinesia can not drive the Oil Switch on vehicle to act, that is, throttle has been cut off.I.e. the present invention can make vehicle
Throttle is automatically cut off when driving over the speed limit.In this way when vehicle has exceeded the speed limit and driver is still when stepping on the gas, the traveling of over-speed vehicles
Speed will not continue to accelerate, and safety is very high.
Description of the drawings
Fig. 1 is the principle of the present invention figure；
Fig. 2 is the connection diagram of centrifugal control mechanism in Fig. 1, servomotor driven change valve and mounting bracket；
Fig. 3 is the A-A schematic cross-sectional views of Fig. 2；
Fig. 4 is the close-up schematic view at the centrifugal-block in Fig. 2；
Fig. 5 be Fig. 4 centrifugal-block and servomotor driven change valve idler wheel be separated when B-B schematic cross-sectional views；
Fig. 6 is the B-B schematic cross-sectional views when centrifugal-block of Fig. 4 is in contact with the idler wheel of servomotor driven change valve；
Fig. 7 is the schematic diagram that centrifugal control mechanism, servomotor driven change valve and the mounting bracket of the present invention is connected in the vehicle bridge of vehicle；
Fig. 8 is the schematic diagram of the accelerator control device of the vehicle of the prior art.
Reference numeral in above-mentioned attached drawing is as follows：Centrifugal control mechanism 1, idler wheel 2-1, mounting bracket 3, connects servomotor driven change valve 2
Connect ring 11, sliding slot 11-1, spring 12, centrifugal-block 13, baffle 31, gas bag 50, gas and oil door 51, gas pedal 51-1, throttle cylinder
52nd, axle housing 60, semiaxis 61, wheel hub 62.
Specific embodiment
Below in conjunction with attached drawing and the embodiment provided, the present invention is further illustrated.
As shown in Figure 1, a kind of accelerator control device of vehicle, including gas bag 50, gas and oil door 51 and throttle cylinder 52；It is described
Gas and oil door 51 includes gas pedal 51-1, and P mouthfuls of the air inlet of gas and oil door 51 is connected with gas bag 50；The model man of great strength of gas and oil door 51
Happy P26716-0001 or P26716-000, when driver steps on the gas pedal 51-1 of gas and oil door 51, gas and oil door 51 into
P mouthfuls of gas port is communicated with performing mouth A mouthfuls；When driver does not step on the gas pedal 51-1 of gas and oil door 51, gas and oil door 51 into
P mouthfuls of gas port is not communicated with performing mouth A mouthfuls.Further include centrifugal control mechanism 1, servomotor driven change valve 2 and mounting bracket 3；Servomotor driven change valve 2
Idler wheel 2-1 by external force pressure spool end moves spool, and servomotor driven change valve 2 is in normal open state, i.e., motor-driven under normal circumstances
P mouthfuls of the air inlet of reversal valve 2 is communicated with performing mouth A mouthfuls, when servomotor driven change valve 2 spool end idler wheel 2-1 by external force when,
Spool movement is pushed by idler wheel 2-1, servomotor driven change valve 2 is made to commutate, not needing to manual operation just can change servomotor driven change valve 2
To the model of servomotor driven change valve 2 can be 23C-25B or 23C-25BH.As shown in Figures 1 to 6, the centrifugal control mechanism 1
Including connection ring 11, spring 12 and centrifugal-block 13；The connection ring 11 is equipped with the sliding slot 11-1 of radial direction, and the centrifugal-block 13 is slided
Dynamic to be connected in the sliding slot 11-1 of connection ring 11, one end of the spring 12 is fixedly connected at the radial inner end of sliding slot 11-1
In connection ring 11, one end of spring 12 can be connected with welding in the connection ring 11 at the radial inner end of sliding slot 11-1, can also
It is that one end of spring 12 sets a hook, a circular hole, one end of spring 12 is set in the connection ring 11 at the radial inner end of sliding slot 11-1
Hook in the circular hole of connection ring 11.The other end of spring 12 is radially outwardly connected on centrifugal-block 13；Spring 12
The other end can connect with welding on centrifugal-block 13 or the other end of spring 12 sets a hook, set on centrifugal-block 13
One circular hole, the other end of spring 12 are hooked in the circular hole of centrifugal-block 13.The servomotor driven change valve 2 is fixedly connected on peace
It shelves on 3 and the idler wheel 2-1 of servomotor driven change valve 2 is in contact or is separated with centrifugal-block 13, P mouthfuls of the air inlet of servomotor driven change valve 2
It is connected with A mouthfuls of the execution mouth of gas and oil door 51, A mouthfuls of the execution mouth of servomotor driven change valve 2 is connected with the rod chamber of throttle cylinder 52.
As shown in fig. 6, when the centrifugal force of centrifugal-block 13 can overcome the active force of spring 12, centrifugal-block 13 can be along connection
The sliding slot 11-1 of the radial direction of ring 11 is in contact, and pushing rolling wheels 2-1 after radially outward sliding with the idler wheel 2-1 of servomotor driven change valve 2
Move spool, at this moment P mouthfuls of the air inlet of servomotor driven change valve 2 is not communicated with performing mouth A mouthfuls.As shown in figure 5, when centrifugal-block 13
When centrifugal force cannot overcome the active force of spring 12, centrifugal-block 13 under the action of spring 12 with the idler wheel 2-1 of servomotor driven change valve 2
It is separated, at this moment P mouthfuls of the air inlet of servomotor driven change valve 2 is communicated with performing mouth A mouthfuls.
The servomotor driven change valve 2 is fixedly connected on by bolt or screw on mounting bracket 3.
As shown in Figure 3 and Figure 7, baffle 31 is further included, the baffle 31 is welded to connect on mounting bracket 3.Can make in this way from
Heart block 13 moves more steady under the influence of centrifugal force.
As shown in fig. 7, mounting bracket 3 in use, is fixedly connected on the vehicle bridge of vehicle by the present invention by bolt or screw
On axle housing 60, the connection ring 11 of centrifugal control mechanism 1 is fixedly connected on to the wheel hub 62 of the vehicle bridge of vehicle by bolt or screw
On, it is rotated by the semiaxis 61 of vehicle bridge with runner hub 62.The connection ring 11 of vehicle centrifugal control mechanism 1 when driving in this way can be with vehicle bridge
Wheel hub 62 rotate together.The piston rod of throttle cylinder 52 is fixedly connected with the Oil Switch of the engine on vehicle.
As shown in Figures 1 to 7, operation principle of the invention is as follows：When vehicle with normal speed when driving, centrifugal-block 13
Centrifugal force cannot overcome the active force of spring 12, centrifugal-block 13 under the action of spring 12 with the idler wheel 2-1 phases of servomotor driven change valve 2
It detaches, at this moment P mouthfuls of the air inlet of servomotor driven change valve 2 is communicated with performing mouth A mouthfuls.When driver needs the travel speed of quickening vehicle
When, need to only step on the gas pedal 51-1 of gas and oil door 51, the pressed gas in gas bag 50 through gas and oil door 51 again through servomotor driven change valve 2 into
Enter the rod chamber of throttle cylinder 52, the piston rod of throttle cylinder 52 acts and the Oil Switch on vehicle is driven to act, and vehicle adds
Speed.
When overspeed of vehicle when driving, the rotary speed of the wheel hub 62 of vehicle bridge will be accelerated, due to the present invention in use, centrifugation
The connection ring 11 of control mechanism 1 is fixedly connected on by bolt or screw on the wheel hub 62 of the vehicle bridge of vehicle, therefore connection ring 11
Rotary speed can also accelerate.The centrifugal-block 13 being slidably connected in this way in the sliding slot 11-1 of the radial direction of connection ring 11 can centrifuge
The spring force of spring 12 is overcome to be moved radially outward under the action of power, centrifugal-block 13 is under the influence of centrifugal force along connection ring 11
After being moved radially outward, first contacted with the idler wheel 2-1 of servomotor driven change valve 2, then pushing rolling wheels 2-1 moves spool, motor-driven to change
It commutates to valve 2, at this moment P mouthfuls of the air inlet of servomotor driven change valve 2 is not communicated with performing mouth A mouthfuls.Accordingly even when driver steps on gas and oil
The gas pedal 51-1 of door 51 makes P mouthfuls of the air inlet of gas and oil door 51 be communicated with performing mouth A mouthfuls, due to the air inlet of servomotor driven change valve 2
P mouthfuls of mouth is not communicated with performing mouth A mouthfuls, therefore the pressed gas in gas bag 50 cannot enter the rod chamber of throttle cylinder 52, throttle
The piston rod akinesia of cylinder 52 can not drive the Oil Switch on vehicle to act, that is, throttle has been cut off.I.e. originally
Invention can make overspeed of vehicle automatically cut off throttle when driving.In this way when vehicle has exceeded the speed limit and driver is still when stepping on the gas, surpass
The travel speed of fast vehicle will not continue to accelerate, and safety is very high.
Claims (3)
1. a kind of accelerator control device of vehicle, including gas bag（50）, gas and oil door（51）With throttle cylinder（52）；The gas and oil door
（51）Including gas pedal（51-1）, gas and oil door（51）P mouthfuls of air inlet and gas bag（50）Connection；It is characterized in that：It further includes
Centrifugal control mechanism（1）, servomotor driven change valve（2）And mounting bracket（3）；The centrifugal control mechanism（1）Including connection ring（11）, bullet
Spring（12）And centrifugal-block（13）；The connection ring（11）It is equipped with the sliding slot of radial direction（11-1）, the centrifugal-block（13）The company of slip
It is connected on connection ring（11）Sliding slot（11-1）In, the spring（12）One end be fixedly connected on sliding slot（11-1）Radial inner end
The connection ring at place（11）On, spring（12）The other end be radially outwardly connected to centrifugal-block（13）On；The servomotor driven change valve
（2）It is fixedly connected on mounting bracket（3）Upper and servomotor driven change valve（2）Idler wheel（2-1）With centrifugal-block（13）It is in contact or is separated,
Servomotor driven change valve（2）P mouthfuls of air inlet and gas and oil door（51）The connection of A mouthfuls of execution mouth, servomotor driven change valve（2）A mouthfuls of execution mouth
With throttle cylinder（52）Rod chamber connection.
2. the accelerator control device of vehicle according to claim 1, it is characterised in that：The servomotor driven change valve（2）Pass through
Bolt or screw are fixedly connected on mounting bracket（3）On.
3. the accelerator control device of vehicle according to claim 1, it is characterised in that：Further include baffle（31）, the gear
Plate（31）It is welded to connect in mounting bracket（3）On.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010972567.0A CN112026518A (en) | 2018-01-28 | 2018-01-28 | Vehicle accelerator control device and operating method thereof |
| CN202010971345.7A CN112026517A (en) | 2018-01-28 | 2018-01-28 | Throttle control device for vehicle |
| CN201810080764.4A CN108248384B (en) | 2018-01-28 | 2018-01-28 | Throttle control device for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810080764.4A CN108248384B (en) | 2018-01-28 | 2018-01-28 | Throttle control device for vehicle |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010971345.7A Division CN112026517A (en) | 2018-01-28 | 2018-01-28 | Throttle control device for vehicle |
| CN202010972567.0A Division CN112026518A (en) | 2018-01-28 | 2018-01-28 | Vehicle accelerator control device and operating method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108248384A true CN108248384A (en) | 2018-07-06 |
| CN108248384B CN108248384B (en) | 2020-10-30 |
Family
ID=62743426
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810080764.4A Active CN108248384B (en) | 2018-01-28 | 2018-01-28 | Throttle control device for vehicle |
| CN202010972567.0A Pending CN112026518A (en) | 2018-01-28 | 2018-01-28 | Vehicle accelerator control device and operating method thereof |
| CN202010971345.7A Pending CN112026517A (en) | 2018-01-28 | 2018-01-28 | Throttle control device for vehicle |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010972567.0A Pending CN112026518A (en) | 2018-01-28 | 2018-01-28 | Vehicle accelerator control device and operating method thereof |
| CN202010971345.7A Pending CN112026517A (en) | 2018-01-28 | 2018-01-28 | Throttle control device for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN108248384B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108909450A (en) * | 2018-08-24 | 2018-11-30 | 刘剑 | The accelerator control device of vehicle |
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| CN2400328Y (en) * | 1999-12-09 | 2000-10-11 | 张建方 | Emergency parking braking device for vehicle |
| DE69430222T2 (en) * | 1993-08-27 | 2002-11-21 | Detroit Diesel Corp | Method for controlling an internal combustion engine |
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| CN103818252A (en) * | 2014-02-07 | 2014-05-28 | 王建明 | Assistor and brake linkage device for motor vehicle |
| CN205588993U (en) * | 2016-02-23 | 2016-09-21 | 湖南农业大学 | Centrifugal vehicle throttle of machinery is prevented mistake and is stepped on safety auxiliary device |
| CN106274484A (en) * | 2016-08-30 | 2017-01-04 | 李博远 | A kind of gas intelligent error preventing steps on brake gear |
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2018
- 2018-01-28 CN CN201810080764.4A patent/CN108248384B/en active Active
- 2018-01-28 CN CN202010972567.0A patent/CN112026518A/en active Pending
- 2018-01-28 CN CN202010971345.7A patent/CN112026517A/en active Pending
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| DE69430222T2 (en) * | 1993-08-27 | 2002-11-21 | Detroit Diesel Corp | Method for controlling an internal combustion engine |
| CN2400328Y (en) * | 1999-12-09 | 2000-10-11 | 张建方 | Emergency parking braking device for vehicle |
| CN2885649Y (en) * | 2006-04-03 | 2007-04-04 | 王国珏 | Device for preventing motor vehicle from mistakenly stepping on accelerator during emergency braking |
| CN103818252A (en) * | 2014-02-07 | 2014-05-28 | 王建明 | Assistor and brake linkage device for motor vehicle |
| CN205588993U (en) * | 2016-02-23 | 2016-09-21 | 湖南农业大学 | Centrifugal vehicle throttle of machinery is prevented mistake and is stepped on safety auxiliary device |
| CN106274484A (en) * | 2016-08-30 | 2017-01-04 | 李博远 | A kind of gas intelligent error preventing steps on brake gear |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108909450A (en) * | 2018-08-24 | 2018-11-30 | 刘剑 | The accelerator control device of vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108248384B (en) | 2020-10-30 |
| CN112026517A (en) | 2020-12-04 |
| CN112026518A (en) | 2020-12-04 |
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