CN101565956B - Underwater gravel stone absorbing device - Google Patents
Underwater gravel stone absorbing device Download PDFInfo
- Publication number
- CN101565956B CN101565956B CN2009100395927A CN200910039592A CN101565956B CN 101565956 B CN101565956 B CN 101565956B CN 2009100395927 A CN2009100395927 A CN 2009100395927A CN 200910039592 A CN200910039592 A CN 200910039592A CN 101565956 B CN101565956 B CN 101565956B
- Authority
- CN
- China
- Prior art keywords
- air chamber
- absorbing device
- guide pipe
- downcomer
- gravel stone
- 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
Images
Landscapes
- Revetment (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an underwater gravel stone absorbing device comprising a guide pipe, an air pipe and an air chamber; the guide pipe comprises an upper guide pipe and a lower guide pipe; the upper guide pipe is connected with the lower guide pipe in a connectable way; the air chamber is provided with a hollow structure and two symmetrical air intakes are arranged on the air chamber; the airpipe and the air chamber are symmetrically communicated with an air compressor; a plurality of air vents are arranged on the lower guide pipe which penetrates through and is fixedly connected with th e air chamber; and a plurality of air vents are arranged in the air chamber which is communicated with the lower guide pipe through the air vents. The underwater gravel stone absorbing device presses high-pressure and high-speed air to the guide pipe from the air chamber to form air-water mixture in the guide pipe, and then utilizes pressure difference generated by density difference of mediums inand out of the guide pipe to absorb stone blocks around the opening of the guide pipe to lead stone blocks to rise along the guide pipe so as to reach the purpose of clearing depressed pile-foundatio n holes quickly and effectively. On one hand, the underwater gravel stone absorbing device overcomes the difficulty of salvaging dropped drills from water and promotes construction process; and on theother hand, the underwater gravel stone absorbing device reduces risk of construction site and enhances safety.
Description
Technical field
The present invention relates to build the auxiliary equipment of subaqueous construction, relate in particular to the underwater gravel stone absorbing device that a kind of easy cleaning stone is salvaged drill bit.
Background technology
Bored pile often is used in the basis of bridge, building engineering, has the disengaging of drill bit and drilling rod, drill rod breaking in drilled pile drilling construction process once in a while, and drill bit is dropped at the bottom of the hole; Or when the Drilling deep hole, the effect that the drill bit neck is concentrated by stress from this fracture, produces so-called disconnected neck drill bit, and the salvaging of this disconnected neck drill bit is difficulty relatively.Make by steel material because of drill bit, drilling rod, the drill bit that falls at the bottom of the hole must in time be salvaged double tides, otherwise will delay the duration, increases construction costs.Existing drill bit fisher is made of adpting flange, fisher bar, recovery hook usually, and drill bit fall to bore back fisher bar and links to each other the back with borer drill rod at the bottom of the hole, by rotation, directly hooks hole subdrilling bar or drill bit, and the lifting drilling rod is taken drill bit out of.This fisher not only needs the long salvaging time, and be only applicable to fall into drill bit at the bottom of the hole is not in plumbness substantially with drilling rod or drilling rod situation, if the drilling rod that fall to bore is long or during the drilling rod run-off the straight, existing fisher just can't be salvaged it smoothly, taking-up.The more important thing is, existing marine salvage equipment only is suitable for the situation that the pile foundation hole wall does not cave in as yet, in case pile foundation hole wall collapse, if only depend on existing fisher, except causing drill bit to take out scrapping, also need take other loaded down with trivial details measure to continue drilling construction, even might cause pile foundation to scrap and change design, not only incured loss through delay the construction period, economic loss is also very huge.
Particularly in water-bed bored pile construction, because the risk and the operational difficulty degree of underwater work are much higher than the land operation, so in a single day the rig drill bit comes off, the engineering of salvaging drill bit is difficult.If meet drill bit come off the place the pile foundation hole cave in, only rely on single drill bit fisher to can not be completed salvage, may need this moment the diving personnel to assist to salvage, greatly reduce the safety factor of engineering, and because the limitation of manual work, fishing success ratio is low, and programming is very influenced.
Therefore, demand a kind of salvaging bit tool that can be applicable to underwater work urgently, clear up a kind of underwater gravel stone absorbing device in the pile foundation hole that caves in quickly and efficiently.
Summary of the invention
The object of the present invention is to provide a kind of instrument of salvaging drill bit in the water that is applicable to, clear up a kind of underwater gravel stone absorbing device in the pile foundation hole that caves in quickly and efficiently.
To achieve these goals, technical scheme of the present invention is: a kind of underwater gravel stone absorbing device is provided, described a kind of underwater gravel stone absorbing device comprises conduit and air chamber, described conduit comprises upper conduit and downcomer, described upper conduit can be connected in described downcomer communicatively, described air chamber is a hollow structure, and have at least two air intakes on the described air chamber, have several pores on the described downcomer, described downcomer runs through described air chamber and fixedlys connected with described air chamber, described pore is positioned at described air chamber, and described air chamber is communicated with described downcomer by described pore.
Preferably, described pore upwards connects setting from described downcomer outer wall to described downcomer inwall with an acute angle.
Described pore is by being arranged to described angle, and the high pressure gas physical efficiency in the air chamber enters pore more quickly, thereby enters conduit, and the water that helps in gases at high pressure and the conduit is combined into air-water mixture more efficiently.In one embodiment, described acute angle is 10 °.
Preferably, described hole diameter is 5 millimeters, and is the five-element and is arranged on equably on the described downcomer.
Preferably, described pore is positioned at respect to 2/3rds of described air chamber and highly locates.
Preferably, have two described air intakes on the described air chamber symmetrically, described air intake links to each other with air compressor.
Preferably, described air chamber is a steel material, and described air chamber is cylindrical.Columniform air chamber makes the high pressure gas physical efficiency that enters air chamber inside from air intake more enter described pore in the concentrated area.
Preferably, described upper conduit comprises a bending tube, and the crooked process radius of described bending tube is more than or equal to 50 centimetres.On upper conduit, be provided with one section bending tube, help being collected by the stone that a kind of underwater gravel stone absorbing device is drawn.
Preferably, described upper conduit segmentation connects, and similarly, described downcomer segmentation connects.Because conduit adopts segmentation to connect, when a certain section conduit has an accident, can dismantle this section conduit as soon as possible, and not influence the operation of whole a kind of underwater gravel stone absorbing device, the I﹠M of convenient a kind of underwater gravel stone absorbing device.
Preferably, described conduit diameter is equal to or greater than 15 centimetres, and an end of described downcomer has two openings symmetrically, and described opening is a circular arc, and the height of described opening is greater than 15 centimetres.The conduit of this diameter cooperates the stone absorption property that can make a kind of underwater gravel stone absorbing device preferable with this opening, and is applicable to various types of water-bed job engineerings.
The invention solves the difficulty of salvaging the drill bit engineering in the water for a long time, this a kind of underwater gravel stone absorbing device is by being pressed into conduit with high-voltage high-speed gas from air chamber, in conduit, form air-water mixture, make the inside and outside medium of conduit produce pressure differential, near the air-flow absorption conduit mouth that rises at a high speed in the final conduit stone, lift stone by the current that rise and rise, realize clearing up quickly and efficiently the purpose in the pile foundation hole that caves in along conduit.On the one hand, promote programming, reduced detail estimate, on the other hand, reduced the ready-made risk of building operations, improved safety.
By following description also in conjunction with the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 is the structural representation of a kind of underwater gravel stone absorbing device of the present invention.
Fig. 2 is the schematic diagram that air chamber combines with downcomer in a kind of underwater gravel stone absorbing device shown in Figure 1.
Fig. 3 is the vertical view of air chamber shown in Figure 2.
Fig. 4 is in a kind of underwater gravel stone absorbing device shown in Figure 2, is positioned at the downcomer cut-away section enlarged drawing of air chamber.
Fig. 5 is the part enlarged drawing of upper conduit in a kind of underwater gravel stone absorbing device of the present invention.
Fig. 6 is the vertical view of flange.
Fig. 7 is a kind of underwater gravel stone absorbing device working state schematic representation of the present invention.
The specific embodiment
With reference now to accompanying drawing, describe inventive embodiment, the similar elements label is represented similar elements in the accompanying drawing.As mentioned above, the present invention aims to provide a kind of convenient rig drill bit, cleaning quickly and efficiently a kind of underwater gravel stone absorbing device in pile foundation hole that caves in of salvaging.Below in conjunction with accompanying drawing, structure of the present invention is described.
Fig. 1 is the structural representation of an embodiment of a kind of underwater gravel stone absorbing device of the present invention.As shown in Figure 1, a kind of underwater gravel stone absorbing device 100 comprises conduit 200 and air chamber 300, and this conduit 200 comprises upper conduit 210 and downcomer 220.Upper conduit 210 is connected with downcomer 220 by flange 400, and upper conduit 210 leads to mutually with downcomer 220.Air chamber 300 is a hollow structure, and this downcomer 220 runs through this air chamber 300 and fixedlys connected with air chamber 300.Preferably, upper conduit 210 and downcomer 220 are the branch section connection structure.Particularly, as shown in Figure 1, each of upper conduit 210 leads to part and connects by flange 400 segmentations, and similarly, each of downcomer 220 leads to part and also connected by flange 400 segmentations.The conduit of this structure, not only convenient the installation, be applicable to various construction sites, the adjustable height, and, when a certain section conduit has an accident, can dismantle this section conduit as soon as possible because conduit adopts segmentation to connect, and do not influence the operation of whole a kind of underwater gravel stone absorbing device, the C﹠M of convenient a kind of underwater gravel stone absorbing device.
Particularly, in one embodiment of the invention, shown in Fig. 2-3, air chamber 300 is the cylinder of a hollow, and is steel material.Have circular port 330 on the upper surface 310 of air chamber 300 and the soffit 320, and two circular ports 330 are symmetrical arranged, that is: this circular port 330 lays respectively at the center of this upper surface 310 and this soffit 320.Downcomer 220 runs through air chamber 300 by circular port 300.The upper surface 310 of air chamber 300 links together by electric welding hermetically with outer wall 222 boundarys of downcomer 220, similarly, the soffit 320 of air chamber 300 links together by electric welding hermetically with outer wall 222 boundarys of downcomer 220, makes air chamber 300 and downcomer 220 be combined into one.Be sealed on the downcomer 220 in the air chamber 300 and have the evenly distributed pore of the five-element 221, in the present embodiment, the aperture of each pore 221 is 5 millimeters.From soffit 320 to the upper surface 310 of air chamber 300 highly is h1, and pore 221 is positioned in 2/3rds places and corresponding downcomer 220 of this height h1.At length, with reference to figure 4, the inwall 223 of pore 221 from the outer wall 222 of this downcomer 220 to this downcomer 220 upwards connects with an acute angle and is provided with, and this acute angle is 10 °.Air chamber 300 is connected with downcomer 220 by pore 221, thereby realizes that air chamber 300 is connected with conduit 200.
More specifically, with reference to figure 2-3, have 340, two air intakes 340 of two air intakes on the upper surface 310 of air chamber 300 and be symmetrical arranged with respect to the center of air chamber 300 upper surfaces 310.In the present embodiment, be welded with the steel pipe 350 that is complementary with air intake 340 sizes respectively on two air intakes 340.By this steel pipe 350 is set, make things convenient for air chamber 300 to link to each other with air compressor (figure does not show) by the steel pipe 350 that is provided with on it, air compressor is sent into the gas of high-voltage high-speed in air chamber 300 by this steel pipe 350.
Need to prove that the pore on the downcomer is not limited to evenly distributed five-element's pore, it is 5 millimeters pore that this pore also is not limited to diameter, can be the evenly distributed pore that is arranged at several arbitrary diameters on the downcomer; The position of pore also is not limited in the pairing embodiment of Fig. 2, on the downcomer at height h1 2/3rds places, can be the optional position that is sealed in the downcomer in the air chamber.In addition, be arranged on air intake on the air chamber upper surface can be three or more than.The corresponding separately concrete parameter of air intake in a kind of underwater gravel stone absorbing device of the present invention and pore is by the concrete need of work decision of a kind of underwater gravel stone absorbing device.
Figure 5 shows that the part schematic diagram of upper conduit 210 in a kind of underwater gravel stone absorbing device 100 of the present invention.With reference to figure 5, upper conduit 210 comprises a bending tube 211, and this bending tube 211 partly is connected with other upper conduit of upper conduit 210 by flange 400 and interlinks.Preferably, at an end of upper conduit 210 outlet 212 is arranged, this outlet can be used for connecting the stone storing apparatus, the convenient stone that extracts via a kind of underwater gravel stone absorbing device of collecting.In the present embodiment, the crooked process radius R of this bending tube 211 is 50 centimetres, with the bending tube 211 that this radius is provided with, can make the stone that extracts by a kind of underwater gravel stone absorbing device more successfully arrive outlet 212 places, work expeditiously thereby help a kind of underwater gravel stone absorbing device.Need to prove that the crooked process radius of bending tube is not limited to 50 centimetres, for making the operation better of a kind of underwater gravel stone absorbing device, the crooked process radius of bending tube can be the arbitrary radius greater than 50 centimetres.
Fig. 6 is the flange schematic diagram.With reference to figure 5-6, flange 400 partly couples together the bending tube in the upper conduit 210 211 and other upper conduit, the two ends of bending tube 211 all are welded with flange 410, the position that borders on of other upper conduit part that is connected with bending tube 211 also is welded with flange 410, two flange 410 by bolt 420 connections.This flange 400 also is applicable to being connected of each connected component in upper conduit 210 and the downcomer 220.
Particularly, in the present embodiment, the diameter of conduit 200 is 15 centimetres.But the diameter of conduit is not limited to 15 centimetres, can be the arbitrary numerical value greater than 15 centimetres.As shown in Figure 1, an end of described downcomer has two openings 230 symmetrically, and this opening 230 is a circular arc, and the height h2 of this opening is greater than 15 centimetres.
In other embodiments of the invention, the diameter of conduit is set its concrete numerical value by the situation of construction site.
In conjunction with the accompanying drawings, the operating principle to a kind of underwater gravel stone absorbing device of the present invention is described in detail:
Fig. 7 is the working state schematic representation of a kind of underwater gravel stone absorbing device of the present invention.As shown in Figure 7, a kind of upper conduit 210 of underwater gravel stone absorbing device 100 conduits 200 is arranged on the horizontal plane 500, promptly exposes in air; Downcomer 220 is arranged on horizontal plane below 500, promptly is immersed in the water end of the downcomer 220 230 contact bottoms body that caves in.With reference to the arrow among the figure 7 indication, start air compressor, air compressor enters air chamber 300 inside with high-voltage high-speed gas via steel pipe 350, thereby inner and be positioned at pore 221 on the downcomer 220 via being arranged on air chamber 300, enters in the downcomer 220.Because it is cylindrical that air chamber 300 is designed to, and pore 221 is tilted to certain angle and connect is provided with, and two kinds of respective outer side edges make that entering air chamber 300 gas inside appoints right character with its high-voltage high-speed to enter downcomer 220, promptly enters conduit 200.Enter the high-voltage high-speed gas of conduit 200 and the water in the conduit 200 and be mixed into swiftly flowing air-water mixture,, make the conduit 200 inner and certain density contrasts of conduit 200 outside generations, thereby produce certain pressure differential according to the little principle of the big pressure of flow velocity.Meanwhile, conduit 200 inner high speed flowing water flow and the air-flow that rises at a high speed form certain vacuum at 230 places, bottom of conduit 200, make the current of conduit 200 outsides rapidly in the inflow catheter 200, simultaneously, near the stones the current drive catheter tip 230 rapidly enter in the conduit 200.Enter stone in the conduit 200 and rely on the power of lifting of the air-water mixture that flows rapidly, rise along downcomer 220, through upper conduit 210, the final outlet 212 that arrives conduit 200 1 ends, by with outlet 212 in succession gatherer collection mutually, finish the cleaning work in the pile foundation hole that caves in,, finish the drill bit salvage efficient high-speed for the drill bit fishing is carried out preliminary preparation.
Wherein, as shown in Figure 7, height H 1 is the center line from horizontal plane 500 to outlet 212, and the value of H1 should be not excessive.Height H 2 is the centre-height position of 221 concentrated areas from horizontal plane 500 to pore, and the value of H2 must not be less than 5 meters.Height H 3 be from the centre-height position of pore 221 concentrated areas to the end 230 of downcomer 220, the value of H3 can extract the operation effectiveness of stone according to a kind of underwater gravel stone absorbing device, suitably adjust its value.
A kind of underwater gravel stone absorbing device of the present invention is not limited to clear up the usefulness in the pile foundation hole that caves in, and also is applicable to desilting engineering under water, other row's lapicide's journey and deslagging engineering etc.
Above invention has been described in conjunction with most preferred embodiment, but the present invention is not limited to the embodiment of above announcement, and should contain various modification, equivalent combinations of carrying out according to essence of the present invention.
Claims (9)
1. underwater gravel stone absorbing device, it is characterized in that: described a kind of underwater gravel stone absorbing device comprises conduit and air chamber, described conduit comprises upper conduit and downcomer, described upper conduit can be connected in described downcomer communicatively, described air chamber is a hollow structure, and have at least two air intakes on the described air chamber, have several pores on the described downcomer, described downcomer runs through described air chamber and fixedlys connected with described air chamber, described pore is positioned at described air chamber, described air chamber is communicated with described downcomer by described pore, described pore upwards connects setting from described downcomer outer wall to described downcomer inwall with an acute angle, has two described air intakes on the described air chamber symmetrically.
2. a kind of underwater gravel stone absorbing device as claimed in claim 1 is characterized in that: described acute angle is 10 °.
3. a kind of underwater gravel stone absorbing device as claimed in claim 1 is characterized in that: described hole diameter is 5 millimeters, and is the five-element and is arranged on equably on the described downcomer.
4. a kind of underwater gravel stone absorbing device as claimed in claim 1 is characterized in that: described air intake links to each other with air compressor by high-pressure air hose.
5. a kind of underwater gravel stone absorbing device as claimed in claim 1 is characterized in that: described air chamber is a steel material, and described air chamber is cylindrical.
6. a kind of underwater gravel stone absorbing device as claimed in claim 1 is characterized in that: described upper conduit comprises a bending tube, and the crooked process radius of described bending tube is equal to or greater than 50 centimetres.
7. a kind of underwater gravel stone absorbing device as claimed in claim 1 is characterized in that: described upper conduit segmentation connects, and described downcomer segmentation connects.
8. a kind of underwater gravel stone absorbing device as claimed in claim 1 is characterized in that: described conduit diameter is equal to or greater than 15 centimetres, and an end of described downcomer has two openings symmetrically, and described opening is a circular arc, and the height of described opening is greater than 15 centimetres.
9. a kind of underwater gravel stone absorbing device as claimed in claim 1 is characterized in that: described pore is positioned at respect to 2/3rds of described air chamber highly to be located.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100395927A CN101565956B (en) | 2009-05-19 | 2009-05-19 | Underwater gravel stone absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100395927A CN101565956B (en) | 2009-05-19 | 2009-05-19 | Underwater gravel stone absorbing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101565956A CN101565956A (en) | 2009-10-28 |
| CN101565956B true CN101565956B (en) | 2011-07-06 |
Family
ID=41282304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100395927A Active CN101565956B (en) | 2009-05-19 | 2009-05-19 | Underwater gravel stone absorbing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101565956B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1167872A (en) * | 1996-06-07 | 1997-12-17 | 冶金工业部长沙矿冶研究院 | Ocean polymetallic nodule hydraulic acquisition mechanism |
| DE10240308A1 (en) * | 2002-08-31 | 2004-03-25 | Maschinen- Und Antriebstechnik Gmbh & Co. Kg | Machine for transporting cohesive materials has rotating spiked disk feeding it to unit where oversized components are removed, product then passing into pneumatic hose connected to compressed air source |
| CN2644523Y (en) * | 2003-04-10 | 2004-09-29 | 戴武 | Air pressure ooze sucker |
| WO2008025106A1 (en) * | 2006-08-28 | 2008-03-06 | Paulo Pavan | Submergible densification cell, sediment separator and sediment densification method |
| CN101413280A (en) * | 2008-12-15 | 2009-04-22 | 中铁二十一局集团有限公司 | Air power suction dredger |
-
2009
- 2009-05-19 CN CN2009100395927A patent/CN101565956B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1167872A (en) * | 1996-06-07 | 1997-12-17 | 冶金工业部长沙矿冶研究院 | Ocean polymetallic nodule hydraulic acquisition mechanism |
| DE10240308A1 (en) * | 2002-08-31 | 2004-03-25 | Maschinen- Und Antriebstechnik Gmbh & Co. Kg | Machine for transporting cohesive materials has rotating spiked disk feeding it to unit where oversized components are removed, product then passing into pneumatic hose connected to compressed air source |
| CN2644523Y (en) * | 2003-04-10 | 2004-09-29 | 戴武 | Air pressure ooze sucker |
| WO2008025106A1 (en) * | 2006-08-28 | 2008-03-06 | Paulo Pavan | Submergible densification cell, sediment separator and sediment densification method |
| CN101413280A (en) * | 2008-12-15 | 2009-04-22 | 中铁二十一局集团有限公司 | Air power suction dredger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101565956A (en) | 2009-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100591859C (en) | Pile pulling construction method for pile pulling machine | |
| CN100535261C (en) | Pile extractor and construction method thereof | |
| CN105401879B (en) | Reacting cycle pneumatic down-hole hammer rotary drilling rig and its construction method | |
| CN104832082A (en) | Pneumatic DTH hammer reverse circulation slagging construction process for rotary drilling rig | |
| CN103821141B (en) | Helical burr ram construction technology | |
| CN101275458A (en) | Reverse circulation construction technique and apparatus of single rope impact drill | |
| CN201074340Y (en) | Pile-drawing machine | |
| CN212001106U (en) | Hole cleaning system for cast-in-place pile | |
| CN107604903A (en) | A kind of miniature steel pipe isolation pile reinforced construction method | |
| CN101672160A (en) | Quick well formation device in soft soil layer | |
| CN204898675U (en) | Sediment ware is inhaled to hole bottom | |
| CN201087421Y (en) | Pile extractor | |
| CN101565956B (en) | Underwater gravel stone absorbing device | |
| CN201396076Y (en) | Pneumatic backcycling drill tool for fixing hole | |
| CN206429211U (en) | Heavy caliber tunneling boring hole drilling deslagging system | |
| CN111236234A (en) | Hole cleaning system and hole cleaning method for cast-in-place pile | |
| CN107795004A (en) | A kind of device thin clearly and its method of work for mud lamination | |
| CN209523195U (en) | A kind of cast-in-situ bored pile bottom secondary pile hole cleaning device | |
| CN103527078A (en) | Hole forming technology and device for bored pile construction through down-the-hole hammer | |
| CN105672877A (en) | Underwater drilling rig used for direct circulation slag removal and hole forming technique | |
| JP2019183626A (en) | Rotary press-in method of tubular body, construction method of wall structure and rotary press-in device of tubular body | |
| CN214089873U (en) | Gas lift reverse circulation hole cleaning equipment | |
| CN213709494U (en) | Tubular pile internal water jet gas lift reverse circulation advanced leading hole pile sinking construction device | |
| CN103835240A (en) | Buoyancy tank type deepwater pile group bridge abutment construction platform and construction method thereof | |
| CN103615000A (en) | Construction device of original-state earth-borrowing cast-in-place pile |
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 |