CN105565109B - A kind of composite elevator buffer and its working method - Google Patents
A kind of composite elevator buffer and its working method Download PDFInfo
- Publication number
- CN105565109B CN105565109B CN201510988945.3A CN201510988945A CN105565109B CN 105565109 B CN105565109 B CN 105565109B CN 201510988945 A CN201510988945 A CN 201510988945A CN 105565109 B CN105565109 B CN 105565109B
- Authority
- CN
- China
- Prior art keywords
- cylinder
- piston
- valve
- pressure
- spring
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/282—Structure thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The present invention relates to elevator safety field, specifically a kind of composite elevator buffer and its working method.A kind of composite elevator buffer, including piston, cylinder, the spring being mounted between piston and cylinder bottom, the end cap with spiracle for being mounted on cylinder oral area, there is piston hole in end cap center, there are two apertures for cylinder bottom, first aperture one end connects the first valve of the cylinder interior other end, the second valve of second aperture one end connection cylinder interior other end connection pressure control.The present invention has the damping characteristics of two kinds of buffers of energy-dissipating type and accumulation energy type superposition；Damping characteristics are not influenced by ambient temperature；Buffering course does not rebound；Carriage downstream rate has soft landing effect first quick and back slow.
Description
Technical field
The present invention relates to elevator safety field, specifically a kind of composite elevator buffer and its working method.
Background technique
Buffer of elevator is typically mounted on the bottommost of elevator.When lift car is in serious (such as traction steel wire out of control
Rope is disconnected) in the state of, wirerope is disconnected to mean that lift car loses traction and is loaded with the carriage of rated load with freely falling body
Form accelerates to glide, if safety tongs movement is unreliable, lift car will rush at the bottommost of elevator, until carriage is encountered
It can just stop on buffer and (be commonly called as crouching bottom accident).Buffer of elevator is when crouching bottom accident occurs for elevator, in lift car
Passenger the safety device of last safety guarantee is provided.Buffer can the impact force powerful to carriage play one consumption and buffering
Effect mitigates impact force to the extent of injury of passenger.The process that carriage and buffer collide is the impact of a moment
Journey, and impact force peak value with higher and shorter duration, for passenger in elevator, this impact force has very much can
It can be fatal.
Urban construction skyscraper largely occurs, and the quantity of elevator surges, and the height of elevator hoist is higher and higher, elevator
Security performance is more valued by people, and as the height of elevator hoist is continuously improved, original buffer of elevator cannot
It adapts to.The kinetic energy that buffer of elevator of new generation does not require nothing more than absorption is bigger, the effect of absorpting form and landing to impact kinetic energy
It puts forward higher requirements.
Buffer of elevator divides spring buffer and hydraulic buffer two major classes.
Spring buffer refers to spring buffer.Main component is by round or rectangular spring steel reinforcing bar (silk) coiling
At helical spring.Spring buffer can make the elastic deformation energy of carriage kinetic energy and potential energy spring after being impacted,
Due to the reaction force of spring, stop carriage retarding braking.After spring-compressed is to extreme position, spring will discharge buffered
The elastic deformation energy stored in journey, the carriage rising that rebound decline cushion at collision again again, it is repeated multiple times could be by spring
Elastic deformation energy release, first stroke speed is higher, and rebound height is higher, and the number of rebound is more.In the process
Secondary or multiple injury may cause to the passenger of carriage.Therefore bumper cannot be applicable on the elevator of skyscraper.
Spring buffer is generally made of yielding rubber, buffing pad, spring, spring base, is arranged side by side in elevator pit multiple.Row
The biggish spring buffer of Cheng Gaodu is equipped with guide sleeve or sets in the spring and lead to enhance the stability of spring in spring lower part
To bar.Although spring buffer structure is simple, low cost, maintenance workload are small, the ability for absorbing Impact energy is poor, rebound
Great efforts, the form of buffering and the effect is unsatisfactory tend to the condition being eliminated.
Existing hydraulic buffer typically refers to hydraulic bjuffer
Hydraulic bjuffer is to alleviate the impact kinetic energy of carriage using the damping effect of liquid flowing, has good buffering
Performance.Though the construction of various hydraulic bjuffers is different, basic principle is identical.When carriage cushion at collision, plunger is downward
It moving, the oil in compression cylinder, keeps oil excessive by throttle orifice, during stop carriage, kinetic energy is converted to the thermal energy of oil,
To consume the kinetic energy of carriage, carriage is made gradually to brake stopping with certain deceleration.Hydraulic bjuffer is during stop
Active force approximation constant makes carriage approximation make uniformly retarded motion and not rebound.Hydraulic buffer is suitable for any operation height
Elevator.
Hydraulic buffer there are the problem of ︰
Although the carriage that hydraulic buffer has many advantages, such as does not rebound and carriage stop process approximation uniformly retarded motion, liquid
Die mould buffer local environment range of temperature is too big, so that the damping characteristics of hydraulic buffer are severely impacted, especially
It is it is bigger in northern area influence degree, because its damping characteristics is influenced by temperature change, the low hydraulic oil retrogradation stream of temperature
Dynamic property is poor, and damping aggravates.The high hydraulic oil thinning flow of temperature is good, and damping mitigates.The problem of bringing is with ring
The variation of border temperature or aperture or the replacement hydraulic oil for changing throttle orifice.Which kind of method no matter is taken also to be unable to reach reason
The damping characteristics thought, because variation of ambient temperature is random slow.
Summary of the invention
The technical problems to be solved by the present invention are: how to overcome the shortcomings of the prior art in above-mentioned background technique,
A kind of novel elevator buffer is provided, it is simple with structure, carriage can be made to successively decrease and deceleration and do not rebounded, realized a kind of soft
Land effect protects the passenger in carriage to the maximum extent.
The technical scheme adopted by the invention is that: a kind of composite elevator buffer, including piston, cylinder, it is mounted on work
The end cap with spiracle filled in the spring between cylinder bottom, be mounted on cylinder oral area, there are piston hole, cylinder in end cap center
There are two aperture, first aperture one end connection cylinder interior other ends to connect the first valve for bottom, and second aperture one end connects
Connect the second valve of cylinder interior other end connection pressure control.
As a kind of preferred embodiment: piston includes upper piston area, piston lower portion, and upper piston area is manufactured by two metal materials
Cylindrical body be formed by stacking, wherein upper cylindrical body outer diameter is identical as the internal diameter of end cap, the internal diameter phase of lower cylindrical body outer diameter and cylinder
Together, piston lower portion is a hollow cylinder, and outer diameter is identical as the internal diameter of cylinder, is installed between upper piston area and piston lower portion
There is 0 type sealing ring, upper piston area is connected by bolts with piston lower portion.
As a kind of preferred embodiment: second aperture one end connection cylinder interior other end connection gas pressure relay and
Solenoid valve, when gas pressure relay reaches the preset pressure upper limit, control solenoid valve is opened, when gas pressure relay reaches
When preset pressure lower limit, control solenoid valve is closed.
As a kind of preferred embodiment: spring is a volute spring.
A kind of working method using composite elevator buffer buffering elevator: the composite elevator buffer is mounted on electricity
The bottommost middle position of stair shaft is forced when lift car falls on the composite elevator buffer in the form of freely falling body
Piston is run down, and spring is deformed, while air enters end cap from spiracle, and the pressure of cylinder interior is made in piston pressure
With lower increase, when the internal cylinder pressure preset pressure upper limit, the second valve is opened, and elevator is worked as in the air discharge of cylinder interior
Not when moving down, internal cylinder pressure is reduced carriage, when internal cylinder pressures being waited to reach pre-determined lower limit pressure, the second valve
It closes, cylinder interior is in sealing state, and lift car will not be bounced by spring strength；After service work, lift car
It slings, opens the first valve, piston runs up under the action of the spring, and air enters cylinder interior from the first valve, on piston
The air in portion is discharged by spiracle, and when piston runs to cylinder topmost, reseting procedure terminates, and closes the first valve, at this time
Second valve is in close state, and carries out the preparation buffered next time.
The beneficial effects of the present invention are: the damping characteristics with the superposition of two kinds of buffers of energy-dissipating type and accumulation energy type；Buffering is special
Property is not influenced by ambient temperature；Buffering course does not rebound；Carriage downstream rate has soft landing effect first quick and back slow.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is pressure switch and battery valve electric operation control circuit figure of the present invention.
Wherein, 1. upper piston area, 2. piston lower portions, 3. 0 type sealing rings, 4. end caps, 5. cylinders, 6. springs, 7. bolts,
8. spiracle, 9. pressure switches, 10. solenoid valves, 11. first valves, Zj. intermediate relay, the of zj-1. intermediate relay
One normally opened contact, the second normally opened contact of zj-2. intermediate relay, the coil of dc. solenoid valve 10, the p1. pressure switch upper limit
Normally opened contact, p2. pressure switch lower limit normally-closed contact.
Specific embodiment
As shown in Figure 1, a kind of composite elevator buffer include upper piston area 1, piston lower portion 2,0 type sealing ring 3 of rubber,
End cap 4, cylinder 5, volute spring 6, bolt 7, spiracle 8, pressure switch 9, solenoid valve 10, the first valve 11 assemble
One assembly, the upper piston area 1 are formed by stacking by the cylindrical body that two metal materials manufacture, wherein upper cylindrical body outer diameter with
The internal diameter of end cap 4 matches, and lower cylindrical body outer diameter matches with the internal diameter of cylinder 5.The piston lower portion 2 is one
Hollow cylinder, outer diameter match with the internal diameter of cylinder 5.It is close that rubber is installed among upper piston area 1 and piston lower portion 2
Seal 3, the rubber seal 3 are 0 type sealing rings, and outer diameter matches with the internal diameter of cylinder 5, upper piston area 1
Coupled with piston lower portion 2 by bolt 7, tightening bolt 7 makes upper piston area 1, piston lower portion 2 and rubber seal 3 form one
Form piston.Piston is mounted on inside cylinder 5, and piston and cylinder are equipped with volute spring 6 between 5 bottom.The end cap 4 is by gold
The ring flange and a hollow metal cylindrical body for belonging to material manufacture are formed by stacking, and the positioning that cylinder inner diameter plays upper piston area 1 is made
With 4 ring flange top symmetric position of end cap is opened there are two spiracle 8, and end cap 4 is mounted on 5 topmost clamping piston of cylinder and cone
Shape spring 6.The cylinder 5 manufactures cylindrical type cylinder by metal material, and symmetric position is provided with two holes on the downside of 5 barrel of cylinder,
In a hole install the first valve 11, in addition a hole installation pressure switch 9 and solenoid valve 10 form the second valve, pressure relay
Device 9 is mounted on the centre of cylinder 5 Yu solenoid valve 10.
When lift car is in serious runaway condition, carriage accelerated in the form of freely falling body glide, carriage it is huge
When impact energy impacts a kind of composite elevator buffer of the invention for being mounted on bottommost, forces piston to run down, make
It obtains volute spring 6 and is deformed accumulation of energy, while piston downlink air enters the top of piston, the air in cylinder 5 from spiracle 8
Pressure is compressed by pistons to increase, piston continues to run down, and volute spring 6 continues to be deformed accumulation of energy, and air continuation is compressed,
The pressure of compressed air continues to increase, when pressure is increased to the preset value upper limit (such as 300Kpa) of pressure switch 9, pressure relay
Device 9 control solenoid valve 10 open, the downstream rate of carriage gradually slow down until stop downlink, at this time the air pressure of cylinder 5 by
Step reduces, and when pressure drops to preset value lower limit (such as 30Kpa) of pressure switch 9, solenoid valve 10 is closed.The impact of carriage is dynamic
It can be converted into two parts to consume, a part is deformed absorption storage by volute spring 6, and another part is converted into compressed air
Can, it is discharged with the discharge of compressed air.After impact, the air of cylinder 5 is drained substantially, due to 10 He of solenoid valve
For first valve 11 all in closed state, cylinder 5 does not have air inlet, and the pressure in cylinder 5 is in vacuum state, volute spring 6
The deformation stored can be not enough to that piston is pushed to run up, and the deformation of volute spring 6 can discharge process and be prevented from.Final piston is in
In the lowest positions of cylinder 5, buffering course terminates.Whole process carriage is not in rebound phenomena, is protected to the maximum extent
Passenger in carriage preserves from.
Reseting procedure
After service work, carriage is sling, and opens the first valve 11, and piston is upward under the effect of energy storage volute spring 6
Operation, air enter the lower part of piston from the first valve 11, and the air of upper piston area is discharged by spiracle 8, and piston is run to
When 5 topmost of cylinder, reseting procedure terminates, and closes the first valve 11, solenoid valve 10 and the first valve 11 are all in closing at this time
State carries out the preparation buffered next time.
It is illustrated in figure 2 pressure switch and battery valve electric operation control circuit figure of the present invention, when pressure is increased to pressure switch 9
The preset pressure upper limit (such as 300Kpa) when, the upper limit normally opened contact p1 closure of pressure switch 9, pressure switch 9 at this time
Lower limit normally-closed contact is in closed state, and the electric Zj of intermediate relay is attracted, the first normally opened contact zj-1 of intermediate relay, in
Between the second normally opened contact zj-2 of relay be closed at, the first normally opened contact zj-1 closure of intermediate relay is by pressure relay
The upper limit normally opened contact of device 9 is shorted, the purpose is to prevent pressure oscillation from solenoid valve 10 being caused to be repeatedly opened and closed, intermediate relay
Second normally opened contact zj-2 of device is closed, the electricity of the coil of solenoid valve 10, and solenoid valve 10 is opened, by the compressed air in cylinder 5
Discharge.When piston runs to the lower part of cylinder 5, as carriage impact kinetic energy is absorbed by the storage of volute spring 6 and air, sedan-chair
The downstream rate in compartment gradually slow down until stop downlink, the air pressure of cylinder 5 gradually reduces at this time, when pressure drop to pressure after
When pre-determined lower limit (such as 30Kpa) of electric appliance 9, the lower limit normally-closed contact of pressure switch 9 is opened, intermediate relay Zj release, in
Between the first normally opened contact zj-1 of relay, the second normally opened contact zj-2 of intermediate relay open simultaneously, solenoid valve 10 close.
Claims (4)
1. a kind of composite elevator buffer, it is characterised in that: including piston, cylinder, be mounted between piston and cylinder bottom
Spring, be mounted on the end cap with spiracle of cylinder oral area, there is a piston hole in end cap center, cylinder bottom there are two aperture,
First aperture one end connection cylinder interior other end connects the first valve, and second aperture one end connects the cylinder interior other end
Connect the second valve of pressure control；Second valve is by pressure switch and solenoid valve block at second aperture one end connects gas
The cylinder interior other end connects gas pressure relay and solenoid valve, when gas pressure relay reaches the preset pressure upper limit, control
Solenoid valve processed is opened, and when gas pressure relay reaches preset pressure lower limit, control solenoid valve is closed.
2. a kind of composite elevator buffer according to claim 1, it is characterised in that: piston includes upper piston area, work
Lower part is filled in, upper piston area is formed by stacking by the cylindrical body that two metal materials manufactures, wherein going up the interior of cylindrical body outer diameter and end cap
Diameter is identical, and lower cylindrical body outer diameter is identical as the internal diameter of cylinder, and piston lower portion is a hollow cylinder, outer diameter and cylinder it is interior
Diameter is identical, and 0 type sealing ring is equipped between upper piston area and piston lower portion, and upper piston area is connected by bolts with piston lower portion.
3. a kind of composite elevator buffer according to claim 1, it is characterised in that: spring is a volute spring.
4. a kind of working method using composite elevator buffer buffering elevator described in claim 1, it is characterised in that: should
Composite elevator buffer is mounted on the bottommost middle position of elevator, when lift car falls on this in the form of freely falling body
When composite elevator buffer, piston is forced to run down, spring is deformed, while air enters end cap, gas from spiracle
The pressure of cylinder interior increases under piston pressure effect, when internal cylinder pressure is increased to the preset pressure upper limit, the second valve
Open, the discharge of the air of cylinder interior, when lift car no longer moves down, internal cylinder pressure is reduced, etc. cylinder interiors
When pressure reaches pre-determined lower limit pressure, the second valve is closed, and cylinder interior is in sealing state, and lift car will not be strong by spring
Power bounces；After service work, lift car is sling, and opens the first valve, and piston is run up under the action of the spring, air
Enter cylinder interior from the first valve, the air of upper piston area is discharged by spiracle, multiple when piston runs to cylinder topmost
Position process terminates, and closes the first valve, the second valve is in close state at this time, carries out the preparation buffered next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510988945.3A CN105565109B (en) | 2015-12-28 | 2015-12-28 | A kind of composite elevator buffer and its working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510988945.3A CN105565109B (en) | 2015-12-28 | 2015-12-28 | A kind of composite elevator buffer and its working method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105565109A CN105565109A (en) | 2016-05-11 |
| CN105565109B true CN105565109B (en) | 2019-01-29 |
Family
ID=55875843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510988945.3A Active CN105565109B (en) | 2015-12-28 | 2015-12-28 | A kind of composite elevator buffer and its working method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105565109B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932244B (en) * | 2017-04-21 | 2023-04-18 | 苏州尚科洁净技术有限公司 | Buffer of large-flow impactor for air sampling |
| CN109573777A (en) * | 2017-09-29 | 2019-04-05 | 上海龙钰电梯配件有限公司 | A kind of elevator buffer device |
| CN109356957B (en) * | 2018-11-20 | 2020-03-27 | 南通理工学院 | New energy automobile is with bumper shock absorber |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06234477A (en) * | 1993-02-05 | 1994-08-23 | Hitachi Ltd | Oil-filled shock absorber for elevator |
| JPH07237846A (en) * | 1994-02-25 | 1995-09-12 | Hitachi Ltd | Oil buffer for elevator |
| CN101932521A (en) * | 2008-04-30 | 2010-12-29 | 三菱电机株式会社 | Shock absorber for elevator |
| CN105000447A (en) * | 2015-07-23 | 2015-10-28 | 南通米兰特电气有限公司 | Multi-groove oil buffer |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2874131Y (en) * | 2005-11-30 | 2007-02-28 | 郝钰 | Resistance adjustable air damper |
| CN201723526U (en) * | 2010-03-21 | 2011-01-26 | 徐州压力机械有限公司 | Two-way stroke control device for hydraulic cylinder |
| CN202746473U (en) * | 2012-06-09 | 2013-02-20 | 奉化市全盛自动化工程有限公司 | Simple air spring |
| CN203463538U (en) * | 2013-09-12 | 2014-03-05 | 深圳市铭昊五金模具有限公司 | Explosion-proof nitrogen spring with ultrahigh pressure prevention function |
| US20150076753A1 (en) * | 2013-09-19 | 2015-03-19 | Dadco, Inc. | Overtravel Pressure Relief For A Gas Spring |
| CN204164244U (en) * | 2014-10-28 | 2015-02-18 | 保定维尔铸造机械股份有限公司 | Multi-functional air damper |
| CN204267589U (en) * | 2014-11-04 | 2015-04-15 | 邵阳兴达精密机械制造有限公司 | A kind of slowly backhaul type nitrogen spring |
| CN204526241U (en) * | 2015-01-23 | 2015-08-05 | 上海远都机床股份有限公司 | Strong high-speed blanking press hydraulic pressure overload protective device |
| CN204847668U (en) * | 2015-07-22 | 2015-12-09 | 宁波西博恩新材料科技有限公司 | Elevator safe operation protection buffer |
-
2015
- 2015-12-28 CN CN201510988945.3A patent/CN105565109B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06234477A (en) * | 1993-02-05 | 1994-08-23 | Hitachi Ltd | Oil-filled shock absorber for elevator |
| JPH07237846A (en) * | 1994-02-25 | 1995-09-12 | Hitachi Ltd | Oil buffer for elevator |
| CN101932521A (en) * | 2008-04-30 | 2010-12-29 | 三菱电机株式会社 | Shock absorber for elevator |
| CN105000447A (en) * | 2015-07-23 | 2015-10-28 | 南通米兰特电气有限公司 | Multi-groove oil buffer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105565109A (en) | 2016-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105565109B (en) | A kind of composite elevator buffer and its working method | |
| KR100532270B1 (en) | Buffer device for elevator | |
| CN106348126A (en) | Slow-rebounding hydraulic limit buffer device for elevator | |
| CN111609073B (en) | Aircraft landing gear buffer | |
| CN101776104A (en) | Single-acting plunger type buffering hydraulic oil cylinder | |
| CN107956834A (en) | A kind of combined type multi-cylinder linkage buffer and its application | |
| CN104444691A (en) | Cushioning device for falling of elevator | |
| CN107352349A (en) | A kind of elevator fall protection equipment | |
| JP6153130B2 (en) | Elevator shock absorber and control method thereof | |
| CN101539182B (en) | Piston-type hydraulic buffer | |
| CN201317377Y (en) | Spring-reset dual-piston Dowty retarder | |
| KR20070032937A (en) | Shock Absorber for Elevator | |
| CN109941861B (en) | Buffer applicable to shallow pit high-speed elevator and working method thereof | |
| KR100904530B1 (en) | An impact absoption apparatus applying multi reduction oil cylinder form and elevator having this | |
| CN209957175U (en) | High-speed elevator buffer suitable for shallow pit | |
| CN209957176U (en) | Embedded multi-stage elevator buffer | |
| CN114110081B (en) | Helicopter landing gear buffer | |
| CN202038785U (en) | Air pressure buffer of elevator | |
| CN210824986U (en) | Elevator car buffer device with air bag | |
| CN2931089Y (en) | High-pressure nitrogen precharge punching machine | |
| CN207330034U (en) | The good safety device for elevator of protecting effect | |
| CN206783056U (en) | A kind of foamed aluminium elevator of external compression falls buffer gear | |
| CN207906348U (en) | A kind of combined type multi-cylinder linkage buffer | |
| KR200340820Y1 (en) | A buffer for elevator | |
| CN205442301U (en) | High strength buffer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |