CN109237023A - A kind of blocking technological holes structure and method for blocking - Google Patents
A kind of blocking technological holes structure and method for blocking Download PDFInfo
- Publication number
- CN109237023A CN109237023A CN201811103194.2A CN201811103194A CN109237023A CN 109237023 A CN109237023 A CN 109237023A CN 201811103194 A CN201811103194 A CN 201811103194A CN 109237023 A CN109237023 A CN 109237023A
- Authority
- CN
- China
- Prior art keywords
- plug
- chamfering
- fabrication hole
- blocking
- opening
- 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
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Classifications
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/062—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces characterised by the geometry of the seat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Geometry (AREA)
- Valve Housings (AREA)
Abstract
The invention discloses a kind of blocking technological holes structure and method for blocking, belong to valve block processing technology field.Plugging structure includes fabrication hole and plug, plug is inserted into fabrication hole, the first chamfering is provided on the inner wall of fabrication hole, the opening of the slope surface of first chamfering towards fabrication hole is arranged, one end of plug is provided with the second chamfering, the slope surface of second chamfering is used to offset with the sealing of the slope surface of the first chamfering, the periphery wall of plug and the internal perisporium of fabrication hole are threadedly engaged, the opening of fabrication hole is provided with third chamfering, the end face of the other end of third chamfering and plug forms welding space, welds and is filled with solder in space.The block reliability of fabrication hole can be improved in the present invention.
Description
Technical field
The invention belongs to valve block processing technology field, in particular to a kind of blocking technological holes structure and method for blocking.
Background technique
Hydraulic valve block is a kind of common hydraulic component, is provided with multiple jacks on outer wall, is used for cartridge control valve, from
And realize the integrated of multiple control valves.
It during fabricating hydraulic valve block, needs that fabrication hole is arranged, for the processing of auxiliary hydraulic pressure valve block, in liquid
Pressure valve block after processing is completed, in order to avoid fabrication hole influences the leakproofness of hydraulic valve block, needs to seal fabrication hole using plug
Closure is got up.
However, stopper structure is very simple now, usually only it is installed together by the way of being threadedly engaged with fabrication hole,
Block reliability is lower, in hydraulic valve block after working for a long time, it is easy to the problem of seal failure occur.
Summary of the invention
The embodiment of the invention provides a kind of blocking technological holes structure and method for blocking, and the closure that fabrication hole can be improved can
By property.The technical solution is as follows:
On the one hand, the embodiment of the invention provides a kind of blocking technological holes structure, the plugging structure include fabrication hole and
Plug, the plug are inserted into the fabrication hole, and the first chamfering, first chamfering are provided on the inner wall of the fabrication hole
Slope surface towards the fabrication hole opening arrange, one end of the plug is provided with the second chamfering, the slope of second chamfering
Face is used to offset with the sealing of the slope surface of first chamfering, and the periphery wall of the plug and the internal perisporium screw thread of the fabrication hole are matched
It closes, the opening of the fabrication hole is provided with third chamfering, and the end face of the other end of the third chamfering and the plug is formed
Space is welded, is filled with solder in the welding space.
In a kind of implementation of the invention, the plug includes sealing cylinder and mounting cylinder, the sealing cylinder
It being coaxially fixed together with the mounting cylinder, the outer diameter of the sealing cylinder is less than the outer diameter of the mounting cylinder, and described the
One end backwards to the mounting cylinder of the sealing cylinder is arranged in two chamferings, and second chamfering and the sealing cylinder are same
Axis is arranged, the external screw thread for being threadedly engaged with the internal perisporium of the fabrication hole is provided on the periphery wall of the mounting cylinder.
In another implementation of the invention, the end face of one end backwards to the sealing cylinder of the mounting cylinder
It is provided with tool mating groove.
In another implementation of the invention, the solder is filled in the tool mating groove.
In another implementation of the invention, the solder is concordant with the opening of the fabrication hole.
On the other hand, the embodiment of the invention provides a kind of method for blocking technological holes, the method for blocking is based on institute above
The plugging structure stated, the method for blocking include:
The plug is screwed to the fabrication hole, so that second chamfering offsets with first chamfering；
The opening of the plug and the fabrication hole is welded, so that filling is fully welded material in the welding space.
Optionally, the plug is screwed to the fabrication hole, comprising:
Tool is inserted to the tool mating groove of the plug；
Screw the tool.
Optionally, the opening of the plug and the fabrication hole is welded, comprising:
By argon arc welding, the opening of the plug and the fabrication hole is welded.
Optionally, the opening of the plug and the fabrication hole is welded, further includes:
By the welding gun of argon arc welding using the axis of the fabrication hole as axis, along the third chamfering slope surface by the plug and
The opening of the fabrication hole welds together.
Optionally, the method for blocking further include:
It polishes the solder, so that the solder is concordant with the opening of the fabrication hole.
Technical solution provided in an embodiment of the present invention has the benefit that
When provided plugging structure is through the embodiment of the present invention to block hydraulic valve block, first with screw thread
The mode of cooperation, plug is screwed to fabrication hole, and the second chamfering of plug and the second chamfering of fabrication hole is made to seal phase
It supports, to improve the leakproofness between plug and fabrication hole.Then plug and fabrication hole are welded along the section of third chamfering
Together, and fill solder is fully welded connect space, so that form an entirety between plug and fabrication hole, and then into one
The leakproofness that ensure that between plug and fabrication hole of step.That is, plugging structure provided by the embodiment of the present invention, passes through
Sealing between first chamfering and the second chamfering offsets, and the fill solder in welding space, improves plug and fabrication hole
Between block reliability, avoid plugging structure and fail after hydraulic valve block works long hours.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the cross-sectional view of plugging structure provided in an embodiment of the present invention；
Fig. 2 is the cross-sectional view of fabrication hole provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of plug provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of method for blocking technological holes provided in an embodiment of the present invention；
Fig. 5 is the flow chart of another method for blocking technological holes provided in an embodiment of the present invention；
Each symbol indicates that meaning is as follows in figure:
1- fabrication hole, the first chamfering of 11-, 12- third chamfering, 2- plug, the second chamfering of 21-, 22- seal cylinder, 23- peace
Fill cylinder, 24- tool mating groove, 3- solder, 100- hydraulic valve block, a- external screw thread.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
The embodiment of the invention provides a kind of blocking technological holes structure, the plugging structure is for blocking hydraulic valve block 100.Such as
Shown in Fig. 1, plugging structure includes fabrication hole 1 (referring to fig. 2) and plug 2 (referring to Fig. 3), and plug 2 is inserted into fabrication hole 1, work
The first chamfering 11 is provided on the inner wall in skill hole 1, the opening of slope surface towards the fabrication hole 1 of the first chamfering 11 is arranged, the one of plug 2
End is provided with the second chamfering 21, and the slope surface of the second chamfering 21 is used to offset with the sealing of the slope surface of the first chamfering 11, the periphery of plug 2
The internal perisporium of wall and fabrication hole 1 is threadedly engaged, and the opening of fabrication hole 1 is provided with third chamfering 12, third chamfering 12 and plug 2
The end face of the other end form welding space, filled with solder 3 in welding space.
When provided plugging structure is through the embodiment of the present invention to block hydraulic valve block 100, first with
The mode being threadedly engaged screws plug 2 to fabrication hole 1, and makes the second chamfering 21 and the second of fabrication hole 1 of plug 2
The sealing of chamfering 21 offsets, to improve the leakproofness between plug 2 and fabrication hole 1.It then will along the section of third chamfering 12
Plug 2 and fabrication hole 1 weld together, and the filling of solder 3 is fully welded and connects space, so that between plug 2 and fabrication hole 1
An entirety is formed, and then further ensure that the leakproofness between plug 2 and fabrication hole 1.That is, the present invention is implemented
Plugging structure provided by example, is offseted by the sealing between the first chamfering 11 and the second chamfering 21, and in welding space
Solder 3 is filled, and the block reliability between plug 2 and fabrication hole 1 is improved, and it is long in hydraulic valve block 100 to avoid plugging structure
It fails after time service.
Referring to Fig. 3, in the present embodiment, plug 2 includes sealing cylinder 22 and mounting cylinder 23, seals cylinder 22 and installation
Cylinder 23 is coaxially fixed together, and the outer diameter of sealing cylinder 22 is less than the outer diameter of mounting cylinder 23, and the second chamfering 21 is arranged close
One end backwards to mounting cylinder 23 of cylinder 22 is sealed, the second chamfering 21 and sealing cylinder 22 are coaxially arranged, outside mounting cylinder 23
The external screw thread a for being threadedly engaged with the internal perisporium of fabrication hole 1 is provided on peripheral wall.
In above-mentioned implementation, plug 2 is divided to seal 23 two parts of cylinder 22 and mounting cylinder, and second is fallen
The setting of angle 21 is on sealing cylinder 22, and external screw thread a is arranged in mounting cylinder 23, so that the second chamfering 21 and external screw thread a
It is arranged apart, and then avoid and interfered between external screw thread a and the second chamfering 21, cause the plugging effect to plug 2 to cause
It influences.Also, it is provided separately the second chamfering 21 and external screw thread a, the processing of plug 2 can also be convenient for, improve production efficiency.
In addition, since the outer diameter of sealing cylinder 22 is less than the outer diameter of mounting cylinder 23, it is possible to convenient in processing plug 2
When cutter withdrawing.
Optionally, sealing cylinder 22 and mounting cylinder 23 can be an integral structure, so that the structure for improving plug 2 is whole
Body, and it is convenient for the production of plug 2.
In the present embodiment, the end face of one end backwards to sealing cylinder 22 of mounting cylinder 23 is provided with tool mating groove
24。
In above-mentioned implementation, tool mating groove 24 screws plug 2 for engagement tool.In the present embodiment, tool
Mating groove 24 can be strip groove, and for cooperating flat mouth screwdriver, in other embodiments, tool mating groove 24 can also be
Cross groove, for cooperating Phillips screwdriver, the present invention to the concrete shape of tool mating groove 24 with no restriction.
Optionally, solder 3 is filled in tool mating groove 24, to further increase between fabrication hole 1 and plug 2
Bonding area, and then improve block reliability.
In the present embodiment, solder 3 is concordant with the opening of fabrication hole 1.
In above-mentioned implementation, space can be welded by overflowing by the means of polishing, after band solder 3 is cooled and shaped
Solder 3 polish off so that solder 3 is concordant with the opening of fabrication hole 1, consequently facilitating the subsequent nickel plating to hydraulic valve block 100.
Fig. 4 is a kind of flow chart of method for blocking technological holes provided by the embodiment of the present invention, which is based on Fig. 1
Shown in plugging structure, referring to fig. 4, which includes:
Step 101: plug 2 being screwed to fabrication hole 1, so that the second chamfering 21 offsets with the first chamfering 11.
Step 102: the opening of welding plug 2 and fabrication hole 1, so that filling is fully welded material 3 in welding space.
When provided method for blocking is through the embodiment of the present invention to block hydraulic valve block 100, first with
The mode being threadedly engaged screws plug 2 to fabrication hole 1, and makes the second chamfering 21 and the second of fabrication hole 1 of plug 2
The sealing of chamfering 21 offsets, to improve the leakproofness between plug 2 and fabrication hole 1.It then will along the section of third chamfering 12
Plug 2 and fabrication hole 1 weld together, and the filling of solder 3 is fully welded and connects space, so that between plug 2 and fabrication hole 1
An entirety is formed, and then further ensure that the leakproofness between plug 2 and fabrication hole 1.That is, the present invention is implemented
Plugging structure provided by example, is offseted by the sealing between the first chamfering 11 and the second chamfering 21, and in welding space
Solder 3 is filled, and the block reliability between plug 2 and fabrication hole 1 is improved, and it is long in hydraulic valve block 100 to avoid plugging structure
It fails after time service.
Fig. 5 is the flow chart of another kind method for blocking technological holes provided by the embodiment of the present invention, which is based on
Plugging structure shown in FIG. 1, referring to Fig. 5, which includes:
Step 201: plug 2 being screwed to fabrication hole 1, so that the second chamfering 21 offsets with the first chamfering 11.
Specifically, step 201 can be realized by following steps:
Firstly, inserting tool to the tool mating groove 24 of plug 2.
Then, screwing tool, until the second chamfering 21 offsets with the first chamfering 11.
In this way, can screwing in order to plug 2, with guarantee the first chamfering 11 offset with the second chamfering 21.
In above-mentioned implementation, tool mating groove 24 screws plug 2 for engagement tool.In the present embodiment, tool
Mating groove 24 can be strip groove, and for cooperating flat mouth screwdriver, in other embodiments, tool mating groove 24 can also be
Cross groove, for cooperating Phillips screwdriver, the present invention to the concrete shape of tool mating groove 24 with no restriction.
Step 202: the opening of welding plug 2 and fabrication hole 1, so that filling is fully welded material 3 in welding space.
Optionally, pass through argon arc welding, the opening of welding plug 2 and fabrication hole 1.
In this way, can completely cut off oxygen in air, nitrogen, hydrogen etc. to electric arc by the argon gas being passed through in welding and melt
The adverse effect that pond generates, to obtain densification in welding space, without the solder 3 to splash, quality is high.
Specifically, step 202 can be accomplished by the following way:
By the welding gun of argon arc welding using the axis of fabrication hole 1 as axis, the slope surface along third chamfering 12 is by plug 2 and fabrication hole 1
Opening weld together.
In above-mentioned implementation, the solder 3 of molten condition will under gravity, along third chamfering 12 section by
It is gradually flow to the middle part in welding space, until the full entire welding space of filling.
Step 203: polishing solder 3, so that solder 3 is concordant with the opening of fabrication hole 1.
In this way, the globality of plugging structure can be improved, convenient for executing step 204.
Step 204: Entire nickel coating is carried out to hydraulic valve block 100.
In this way, the corrosion resistance of plugging structure can be mentioned, the reliability of plugging structure further ensure that.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of blocking technological holes structure, the plugging structure includes fabrication hole and plug, and the plug is inserted into the technique
In hole, which is characterized in that be provided with the first chamfering on the inner wall of the fabrication hole, the slope surface of first chamfering is towards the work
The opening in skill hole arranges that one end of the plug is provided with the second chamfering, and the slope surface of second chamfering is used for and described first
The slope surface sealing of chamfering offsets, and the periphery wall of the plug and the internal perisporium of the fabrication hole are threadedly engaged, the fabrication hole
Opening is provided with third chamfering, and the end face of the other end of the third chamfering and the plug forms welding space, the weldering
It connects in space filled with solder.
2. plugging structure according to claim 1, which is characterized in that the plug includes sealing cylinder and mounting cylinder,
The sealing cylinder and the mounting cylinder are coaxially fixed together, and the outer diameter of the sealing cylinder is less than the mounting cylinder
One end backwards to the mounting cylinder of the sealing cylinder, second chamfering and institute is arranged in outer diameter, second chamfering
It is coaxially arranged to state sealing cylinder, is provided on the periphery wall of the mounting cylinder and matches for the internal perisporium screw thread with the fabrication hole
The external screw thread of conjunction.
3. plugging structure according to claim 2, which is characterized in that the sealing cylinder described backwards of the mounting cylinder
The end face of one end is provided with tool mating groove.
4. plugging structure according to claim 3, which is characterized in that be filled with the solder in the tool mating groove.
5. plugging structure according to claim 1-4, which is characterized in that the solder is opened with the fabrication hole
Mouth is concordant.
6. a kind of method for blocking technological holes, which is characterized in that the method for blocking is based on plugging structure described in claim 1,
The method for blocking includes:
The plug is screwed to the fabrication hole, so that second chamfering offsets with first chamfering；
The opening of the plug and the fabrication hole is welded, so that filling is fully welded material in the welding space.
7. method for blocking according to claim 6, which is characterized in that screw to the fabrication hole plug, wrap
It includes:
Tool is inserted to the tool mating groove of the plug；
Screw the tool.
8. method for blocking according to claim 6, which is characterized in that weld the opening of the plug and the fabrication hole
Place, comprising:
By argon arc welding, the opening of the plug and the fabrication hole is welded.
9. method for blocking according to claim 8, which is characterized in that weld the opening of the plug and the fabrication hole
Place, further includes:
By the welding gun of argon arc welding using the axis of the fabrication hole as axis, the slope surface along the third chamfering is by the plug and described
The opening of fabrication hole welds together.
10. method for blocking according to claim 6, which is characterized in that the method for blocking further include:
It polishes the solder, so that the solder is concordant with the opening of the fabrication hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811103194.2A CN109237023B (en) | 2018-09-20 | 2018-09-20 | Fabrication hole plugging structure and plugging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811103194.2A CN109237023B (en) | 2018-09-20 | 2018-09-20 | Fabrication hole plugging structure and plugging method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109237023A true CN109237023A (en) | 2019-01-18 |
| CN109237023B CN109237023B (en) | 2021-06-08 |
Family
ID=65055954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811103194.2A Active CN109237023B (en) | 2018-09-20 | 2018-09-20 | Fabrication hole plugging structure and plugging method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109237023B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112317929A (en) * | 2020-11-05 | 2021-02-05 | 上海宝冶工程技术有限公司 | Hole plugging welding process |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5033426A (en) * | 1990-08-22 | 1991-07-23 | Cummins Engine Company, Inc. | Radial combustion seal |
| KR20110036395A (en) * | 2009-10-01 | 2011-04-07 | 한국델파이주식회사 | Retainer applied in alternate generator of car |
| CN106969143A (en) * | 2016-01-13 | 2017-07-21 | 哈尔滨飞机工业集团有限责任公司 | A kind of thin-walled unthreaded hole sealing device |
| CN107830301A (en) * | 2017-11-29 | 2018-03-23 | 苏州水博士建材科技有限公司 | A kind of duct closing type device |
| CN107869734A (en) * | 2016-09-26 | 2018-04-03 | 通用电气公司 | The advanced seal of turning leakage with reduction |
| CN207229740U (en) * | 2017-08-14 | 2018-04-13 | 厦门艾斯霖橡塑科技有限公司 | Seal for pipe joints circle |
| CN207316069U (en) * | 2017-08-31 | 2018-05-04 | 安徽江淮汽车集团股份有限公司 | Manual plugging apparatus |
| CN207365792U (en) * | 2017-09-30 | 2018-05-15 | 博格思众（常州）热交换器有限公司 | A kind of blocking cap for header |
| CN108035731A (en) * | 2017-12-05 | 2018-05-15 | 徐州徐工基础工程机械有限公司 | A kind of cantilevered rock tunnel(ling) machine hard rock cutting arm |
-
2018
- 2018-09-20 CN CN201811103194.2A patent/CN109237023B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5033426A (en) * | 1990-08-22 | 1991-07-23 | Cummins Engine Company, Inc. | Radial combustion seal |
| KR20110036395A (en) * | 2009-10-01 | 2011-04-07 | 한국델파이주식회사 | Retainer applied in alternate generator of car |
| CN106969143A (en) * | 2016-01-13 | 2017-07-21 | 哈尔滨飞机工业集团有限责任公司 | A kind of thin-walled unthreaded hole sealing device |
| CN107869734A (en) * | 2016-09-26 | 2018-04-03 | 通用电气公司 | The advanced seal of turning leakage with reduction |
| CN207229740U (en) * | 2017-08-14 | 2018-04-13 | 厦门艾斯霖橡塑科技有限公司 | Seal for pipe joints circle |
| CN207316069U (en) * | 2017-08-31 | 2018-05-04 | 安徽江淮汽车集团股份有限公司 | Manual plugging apparatus |
| CN207365792U (en) * | 2017-09-30 | 2018-05-15 | 博格思众（常州）热交换器有限公司 | A kind of blocking cap for header |
| CN107830301A (en) * | 2017-11-29 | 2018-03-23 | 苏州水博士建材科技有限公司 | A kind of duct closing type device |
| CN108035731A (en) * | 2017-12-05 | 2018-05-15 | 徐州徐工基础工程机械有限公司 | A kind of cantilevered rock tunnel(ling) machine hard rock cutting arm |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112317929A (en) * | 2020-11-05 | 2021-02-05 | 上海宝冶工程技术有限公司 | Hole plugging welding process |
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| Publication number | Publication date |
|---|---|
| CN109237023B (en) | 2021-06-08 |
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