CN105202012A - Pin shaft - Google Patents
Pin shaft Download PDFInfo
- Publication number
- CN105202012A CN105202012A CN201510621396.6A CN201510621396A CN105202012A CN 105202012 A CN105202012 A CN 105202012A CN 201510621396 A CN201510621396 A CN 201510621396A CN 105202012 A CN105202012 A CN 105202012A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- domatic
- bearing pin
- end cap
- gap
- 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.)
- Pending
Links
Landscapes
- Pivots And Pivotal Connections (AREA)
Abstract
The invention relates to a pin shaft. The pin shaft comprises a cylindrical body, an expanding sleeve and a fixing part. The peripheral wall at one end of the body is provided with a first slope surface, and the distance from the first slope surface to an axis of the body is gradually decreased along the direction departing from the other end of the body. The expanding sleeve comprises a sleeve body sleeving one end of the body, the inner peripheral wall of the sleeve body is provided with a second slope surface in abutting joint with and matched with the first slope surface, and the sleeve body is provided with at least one slit penetrating the sleeve body radially and extending towards two ends of the sleeve body. The fixing part is used for applying axial pressure, towards the body, on the expanding sleeve so as to enable the sleeve body to be expanded open by the first slope surface. The pin shaft is capable of eliminating gaps between pin shaft holes of hinge joint seats and the pin shaft, so that service life of the pin shaft is prolonged and connection precision of the pin shaft is improved.
Description
Technical field
The present invention relates to a kind of hinging structure, particularly a kind of bearing pin.
Background technique
Drill jumbo is a kind of rock drilling equipment that tunnels and underground engineering adopts drill bursting construction, and rock drilling arm can move and control the operation of rock drill drill precise holes.But, in actual use, due to can not effectively by the pin shaft hole swelling of hinged seat, cause producing wide arc gap between bearing pin and rock drilling arm oil cylinder axis hole, in rock drilling process, cause the instability of rock drilling arm, acutely rock, larger impact load is caused when rock drilling, can not accurate positioning operation when causing rock drill to be holed; Rock drilling arm hinging pin shaft often ruptures, and has had a strong impact on normally carrying out of production.The working life of this bearing pin is shorter, adds construction cost.
Summary of the invention
Technical problem to be solved by this invention is how to reduce the gap between pin shaft hole and bearing pin.
For above-mentioned technical problem, the present invention proposes a kind of bearing pin, it comprises: columned body, the periphery wall of one end of body is provided with first domatic, distance convergent on the direction of the other end deviating from body of the first domatic axis to body; Expansion set, expansion set comprises the sleeve of the one end being sleeved on body, the inner circle wall of sleeve is provided with abut against and match second domatic domatic with first, sleeve at least arranges a radial direction and runs through sleeve and the gap extended to sleeve two ends; Fixed block, fixed block be used for applying axially expansion set and the pressure pressing to body to make sleeve by the first domatic distending.
In a specific embodiment, distance convergent on the direction near the other end of the second domatic axis to sleeve.
In a specific embodiment, first is domatic and second be domaticly the turning surface coaxial with body.
In a specific embodiment, first domatic be male cone (strobilus masculinus), second domatic be cone angle and the first domatic equal inner conical surface.
In a specific embodiment, first domatic and the second domatic cone angle is less than or equal to 7 °.
In a specific embodiment, expansion set also comprises from the radial flange to protruding of the periphery wall of sleeve.
In a specific embodiment, expansion set also comprises the end cap being arranged on sleeve one end outwardly, and fixed block is that its screw axial runs through end cap and the screw be threaded with body or bolt.
In a specific embodiment, flange is provided with the gap of division flange, and end cap is provided with and axially runs through end cap and the radial gap extended, and on same expansion set, the gap of the gap on flange, the gap on end cap and sleeve is interconnected.
In a specific embodiment, bearing pin also comprises the packing ring passed between nut and end cap and by screw or bolt being arranged on screw or bolt.
In a specific embodiment, the through hole that end cap passes for screw rod is the screw that internal diameter is greater than outer screw diameter.
In a specific embodiment, the two ends of body are provided with first domatic, and bearing pin comprises two and is set in the expansion set at the two ends of body and acts on two fixed blocks of two expansion sets respectively.
Bearing pin of the present invention is inserted into after in the pin shaft hole of axis pin base, arranges fixed block and applies axial to expansion set to make fixed block and press to the pressure of body.After expansion set is under pressure, sleeve second domatic with the first domatic mutual extruding, the gap on sleeve is opened, sleeve radial outward expansion, until the periphery wall of sleeve is connected to the pin shaft hole inner circle wall of axis pin base.Thus eliminating the need the gap between pin shaft hole and bearing pin, the working life that improve bearing pin be connected precision.
Accompanying drawing explanation
Also will be described in more detail the present invention with reference to accompanying drawing based on embodiment hereinafter.Wherein:
Fig. 1 shows the complete section schematic diagram of the bearing pin of one embodiment of the present invention;
Schematic diagram is looked on a left side for the bearing pin that Fig. 2 shows in Fig. 1.
In the accompanying drawings, identical parts use identical reference character.Accompanying drawing is not according to the scale of reality.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 shows the structure of the bearing pin 1 in one embodiment of the present of invention.This bearing pin 1 comprises body 2, be sleeved on expansion set 3 on body 2 and by relative with expansion set 3 for body 2 fixed block 4 be fixed up.This bearing pin 1 is mainly used in location between two parts and/or transmission.Be particularly useful for the location between two hinged seats and transmission, transmit the interaction force between two hinged seats.Describe in detail in the pin shaft hole being arranged on hinged seat below for this bearing pin 1.
Body 2 is configured to cylindrical-shaped structure roughly.Body 2 is the skeletal structure of bearing pin 1, carries two hinged seats respectively to the radial shear power that bearing pin 1 applies.Body 2 comprises first end and second end relative with first end.First end is provided with first domatic 21.First domatic 21 is positioned on the periphery wall of the first end of body 2.First domatic 21 to distance convergent on the direction of the second end deviating from body 2 of the axis of body 2.Like this, on first domatic 21, the closer to the end of first end, its distance to the axis of body 2 is then less.The middle part of body 2 is provided with axial screw.
Expansion set 3 comprises sleeve 31 and end cap 34.Sleeve 31 is sleeved on the first end of body 2.Sleeve 31 is tubular structure, is preferably cylindrical structure.The inner circle wall of sleeve 31 is provided with second domatic 32.Second domatic 32 is connected to first domatic 21 and matches with first domatic 21.As shown in Figure 2, sleeve 31 is also provided with gap 35.Gap 35 radial direction runs through sleeve 31.Gap 35 extends to the two ends of sleeve 31.End cap 34 is arranged on sleeve 31 one end outwardly.End cap 34 covers on sleeve 31 end outwardly.End cap 34 is provided with the through hole axially running through end cap 34.End cap 34 is preferably the axis perpendicular to sleeve 31.Sleeve 31 is preferably coaxial with body 2.
In the present embodiment, fixed block 4 is for applying the pressure axially pressing to body 2 to expansion set 3.After expansion set 3 is under pressure, second domatic 32 and first domatic 21 of sleeve 31 extrudes mutually, and sleeve 31 radial outward expansion, gap 35 is opened.Fixed block 4 can be bolt or screw.In the present embodiment, fixed block 4 adopts bolt.The screw rod of bolt 4 is threaded with the screw in the middle part of body 2 through the through hole of end cap 34.The nut of bolt extrudes end cap 34 and expansion set 3 is fixed, and by distending.Meanwhile, bolt due to be subject to expansion set 3 apply reaction force and by self-locking.
Two hinged seats are provided with pin shaft hole.Two hinged seats are hinged together through these two pin shaft holes by bearing pin 1.When mounted, the sleeve 31 of expansion set 3 is inserted in the pin shaft hole of one of them hinged seat, tights a bolt 4, and the outside distending of sleeve 31 is until be connected to the inwall of this pin shaft hole.Thus eliminating the need the gap between bearing pin 1 and this pin shaft hole, make the connection between bearing pin 1 and pin shaft hole more firm.Thus, can reduce the impact load between hinged seat and bearing pin 1, bearing pin 1 is not easy fracture, hinged more reliable between two hinged seats, uses the longer service life of bearing pin 1.
Preferably, the through hole on end cap 34 is screw.Fixed block 4 be screw or bolt time, the external diameter of the screw rod of fixed block 4 is less than the internal diameter of screw, and fixed block 4 does not interact with this screw.When expansion set 3 disassembles from body 2 by needs, only need be screwed into wherein by the bolt matched with this screw, the bottom of the screw rod of bolt is connected to body 2 thus is outwards ejected by expansion set 3.Thus, easier expansion set 3 to be taken off from body 2.
Preferably, first domatic 21 is the turning surface coaxial with body 2.Second domatic 32 is the turning surface coaxial with sleeve 31.Sleeve 31 and body 2 coaxial.Like this, the first domatic 21 and second domatic 32 interface mutually abutted is annular, and sleeve 31 is stressed in the circumferential evenly and can by even distending.Thus, the active force between bearing pin 1 and hinged seat evenly, more reasonable.
Preferably, first domatic 21 is male cone (strobilus masculinus), and namely first domatic 21 is conical surface outwardly.Second domatic 32 is inner conical surface, and namely second domatic 32 is conical surface inwardly.The cone angle of first domatic 21 is equal with the cone angle of second domatic 32.Like this, when first domatic 21 and second domatic 32 abuts against, can have area of contact large as far as possible all the time, bearing pin 1 structure is more firm.More preferably, the cone angle of first domatic 21 and second domatic 32 is less than or equal to 7 °, and in this angular range, the axial force between sleeve 31 and body 2 is little, and bearing pin 1 structure is more firm.
Preferably, expansion set 3 also comprises the flange 33 on the periphery wall being arranged on sleeve 31.Flange 33 is protruding from radially outward the periphery wall of sleeve 31.The diameter of flange 33 is greater than the pin shaft hole diameter of hinged seat.Flange 33 carries out spacing from the side of hinged seat to hinged seat, prevents hinged seat from moving axially relative to bearing pin 1 and outstanding bearing pin 1.Flange 33 is arranged on sleeve 31 one end outwardly, and bearing pin 1 can design compacter.
Preferably, the gap on sleeve 31 extends to the two ends of sleeve 31.After arranging like this, increase the elastically-deformable scope of sleeve 31, make the limit that swells of sleeve 31 become large, the pore diameter range of the pin shaft hole that sleeve 31 can coordinate increases.
Preferably, flange 33 and end cap 34 also has gap.Flange 33 division is come by the gap on flange 33.Gap radial direction on end cap 34 extends and axially runs through end cap 34.Gap on flange 33, end cap 34 and sleeve 31 is interconnected, and the elastic strain scope of sleeve 31 increases further, and sleeve 31 is more easily swollen.More preferably, gap on sleeve 31 axially extends, and the gap radial direction on the gap on flange 33 and end cap 34 extends, and these gaps are in same plane.
Preferably, bearing pin 1 also comprises packing ring 5.When fixed block 4 is screw, packing ring 5 is arranged between the nut of screw and end cap 34.Nut extruded gasket 5, active force is more uniformly assigned on end cap 34 by packing ring 5, and end cap 34 is stressed more reasonable.Meanwhile, problem end cap 34 axial deformation that causes due to end cap 34 being provided with gap can also being avoided uneven.
Preferably, the first end of body 2 and the second end are provided with first domatic 21.Bearing pin 1 is provided with two fixed blocks 4 and two expansion sets 3.The structure of two expansion sets 3 is described above.Two expansion sets 3 are separately positioned on the two ends of body 2, the body 2 of two expansion sets 3.First domatic 21 of two expansion sets 3 abut mutually with first domatic 21 on the first end of body 2 and the second end of body 2 respectively.Two fixed blocks 4 act on two expansion sets 3 respectively, and apply to two expansion sets 3 pressure axially pressing to body 2 respectively.
Bearing pin 1 is through the pin shaft hole of two hinged seats.The sleeve 31 of two expansion sets 3 of bearing pin 1 lays respectively within these two pin shaft holes.Two hinged seats all coordinate more firm with bearing pin 1, greatly improve the life-span of bearing pin 1 and the reliability of bearing pin 1.In addition, regulate two fixed blocks, 4 pairs of expansion set 3 applied pressures respectively, be conducive to the degree controlling swelling between the sleeve 31 of two expansion sets 3 and pin shaft hole respectively.
Although invention has been described with reference to preferred embodiment, without departing from the scope of the invention, various improvement can be carried out to it and parts wherein can be replaced with equivalent.Especially, only otherwise there is structural hazard, the every technical characteristics mentioned in each embodiment all can combine in any way.The present invention is not limited to specific embodiment disclosed in literary composition, but comprises all technological schemes fallen in the scope of claim.
Claims (11)
1. a bearing pin, is characterized in that, comprising:
Columned body, the periphery wall of one end of described body is provided with first domatic, distance convergent on the direction of the other end deviating from described body of the described first domatic axis to described body;
Expansion set, described expansion set comprises the sleeve of the one end being sleeved on described body, the inner circle wall of described sleeve is provided with and domaticly abuts against and match second domatic with described first, described sleeve at least arranges a radial direction and runs through described sleeve and the gap extended to described sleeve two ends;
Fixed block, described fixed block be used for applying axially described expansion set and the pressure pressing to body to make described sleeve by described first domatic distending.
2. bearing pin according to claim 1, is characterized in that, distance convergent on the direction near the described the other end of the described second domatic axis to described sleeve.
3. bearing pin according to claim 2, is characterized in that, described first domatic and second be domaticly the turning surface coaxial with described body.
4. bearing pin according to claim 3, is characterized in that, described first domatic be male cone (strobilus masculinus), described second domatic be cone angle and described first domatic equal inner conical surface.
5. bearing pin according to claim 4, is characterized in that, described first domatic and described second domatic cone angle is less than or equal to 7 °.
6. bearing pin according to any one of claim 1 to 5, is characterized in that, described expansion set also comprises from the radial flange to protruding of the periphery wall of described sleeve.
7. bearing pin according to claim 6, is characterized in that, described expansion set also comprises the end cap being arranged on described sleeve one end outwardly, and described fixed block is that its screw axial runs through described end cap and the screw be threaded with described body or bolt.
8. bearing pin according to claim 7, is characterized in that, described flange is provided with the gap dividing described flange, and described end cap is provided with and axially runs through described end cap and the radial gap extended,
On same expansion set, the gap of the gap on flange, the gap on end cap and sleeve is interconnected.
9. bearing pin according to claim 8, is characterized in that, described bearing pin also comprises the packing ring passed between nut and described end cap and by described screw or bolt being arranged on described screw or bolt.
10. bearing pin according to claim 7, is characterized in that, the through hole that described end cap passes for described screw rod is the screw that internal diameter is greater than described outer screw diameter.
11. bearing pins according to any one of claim 1 to 10, it is characterized in that, the two ends of described body are provided with described first domatic, and described bearing pin comprises two and is set in the described expansion set at the two ends of described body and acts on two fixed blocks of described two expansion sets respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510621396.6A CN105202012A (en) | 2015-09-25 | 2015-09-25 | Pin shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510621396.6A CN105202012A (en) | 2015-09-25 | 2015-09-25 | Pin shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105202012A true CN105202012A (en) | 2015-12-30 |
Family
ID=54949886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510621396.6A Pending CN105202012A (en) | 2015-09-25 | 2015-09-25 | Pin shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105202012A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107584971A (en) * | 2017-10-10 | 2018-01-16 | 徐州徐工矿山机械有限公司 | A kind of large-scale fixing structure for pin shaft of quarry tipper |
| CN108223528A (en) * | 2017-12-15 | 2018-06-29 | 三重型装备有限公司 | Tensioning connection device and coalcutter |
| CN108869547A (en) * | 2018-07-05 | 2018-11-23 | 宁波镇明转轴有限公司 | A kind of vehicle transmission neck bush |
| CN112647551A (en) * | 2020-12-03 | 2021-04-13 | 中联重科股份有限公司 | Pin shaft mounting structure, scarifier and bulldozer |
| CN113685134A (en) * | 2021-08-27 | 2021-11-23 | 中国煤炭科工集团太原研究院有限公司 | Anchor rod drill carriage working arm |
| CN113775636A (en) * | 2021-08-27 | 2021-12-10 | 中国煤炭科工集团太原研究院有限公司 | Clearance compensation type pin shaft device and anchor rod drilling machine |
| CN113790071A (en) * | 2021-08-27 | 2021-12-14 | 中国煤炭科工集团太原研究院有限公司 | High-precision positioning system for heavy-load working arm of drilling and anchoring robot |
| CN114542566A (en) * | 2022-01-26 | 2022-05-27 | 天地上海采掘装备科技有限公司 | Taper sleeve and taper sleeve pin shaft assembly for coal mining machine |
| CN114728426A (en) * | 2019-10-02 | 2022-07-08 | 贝特彻工业公司 | Splitting blade housing with expansion sleeve assembly for power operated rotary tool |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036621A (en) * | 1989-01-09 | 1989-10-25 | 宛志强 | U-joint |
| DE4203324C2 (en) * | 1992-02-06 | 1994-05-19 | Heinrich Liebig | Bolt anchor with expansion sleeve |
| CN2567265Y (en) * | 2002-07-24 | 2003-08-20 | 上海剑豪液力传动设备制造有限公司 | Pin locking structure of tamping machine |
| CN2721949Y (en) * | 2004-06-25 | 2005-08-31 | 神华集团有限责任公司 | Assembly of pin |
| JP2011153432A (en) * | 2010-01-26 | 2011-08-11 | Miwa Lock Co Ltd | Hinge mechanism for building operation panel |
| CN203741909U (en) * | 2013-10-31 | 2014-07-30 | 渭南信杰工程机械有限责任公司 | Anti-swing large-torque connection structure used on excavator |
| CN205089787U (en) * | 2015-09-25 | 2016-03-16 | 中国铁建重工集团有限公司 | Pin |
-
2015
- 2015-09-25 CN CN201510621396.6A patent/CN105202012A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036621A (en) * | 1989-01-09 | 1989-10-25 | 宛志强 | U-joint |
| DE4203324C2 (en) * | 1992-02-06 | 1994-05-19 | Heinrich Liebig | Bolt anchor with expansion sleeve |
| CN2567265Y (en) * | 2002-07-24 | 2003-08-20 | 上海剑豪液力传动设备制造有限公司 | Pin locking structure of tamping machine |
| CN2721949Y (en) * | 2004-06-25 | 2005-08-31 | 神华集团有限责任公司 | Assembly of pin |
| JP2011153432A (en) * | 2010-01-26 | 2011-08-11 | Miwa Lock Co Ltd | Hinge mechanism for building operation panel |
| CN203741909U (en) * | 2013-10-31 | 2014-07-30 | 渭南信杰工程机械有限责任公司 | Anti-swing large-torque connection structure used on excavator |
| CN205089787U (en) * | 2015-09-25 | 2016-03-16 | 中国铁建重工集团有限公司 | Pin |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107584971A (en) * | 2017-10-10 | 2018-01-16 | 徐州徐工矿山机械有限公司 | A kind of large-scale fixing structure for pin shaft of quarry tipper |
| CN108223528A (en) * | 2017-12-15 | 2018-06-29 | 三重型装备有限公司 | Tensioning connection device and coalcutter |
| CN108223528B (en) * | 2017-12-15 | 2020-06-19 | 三一重型装备有限公司 | Tension connecting device and coal mining machine |
| CN108869547A (en) * | 2018-07-05 | 2018-11-23 | 宁波镇明转轴有限公司 | A kind of vehicle transmission neck bush |
| CN114728426A (en) * | 2019-10-02 | 2022-07-08 | 贝特彻工业公司 | Splitting blade housing with expansion sleeve assembly for power operated rotary tool |
| CN114728426B (en) * | 2019-10-02 | 2024-04-16 | 贝特彻工业公司 | Split blade housing with expansion sleeve assembly for power operated rotary cutter |
| CN112647551A (en) * | 2020-12-03 | 2021-04-13 | 中联重科股份有限公司 | Pin shaft mounting structure, scarifier and bulldozer |
| CN113685134A (en) * | 2021-08-27 | 2021-11-23 | 中国煤炭科工集团太原研究院有限公司 | Anchor rod drill carriage working arm |
| CN113775636A (en) * | 2021-08-27 | 2021-12-10 | 中国煤炭科工集团太原研究院有限公司 | Clearance compensation type pin shaft device and anchor rod drilling machine |
| CN113790071A (en) * | 2021-08-27 | 2021-12-14 | 中国煤炭科工集团太原研究院有限公司 | High-precision positioning system for heavy-load working arm of drilling and anchoring robot |
| CN114542566A (en) * | 2022-01-26 | 2022-05-27 | 天地上海采掘装备科技有限公司 | Taper sleeve and taper sleeve pin shaft assembly for coal mining machine |
| CN114542566B (en) * | 2022-01-26 | 2024-05-03 | 天地上海采掘装备科技有限公司 | Taper sleeve and taper sleeve pin shaft assembly for coal mining machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105202012A (en) | Pin shaft | |
| JP6254103B2 (en) | Large capacity radial fit coupling bolt assembly, large capacity expansion sleeve bolt assembly or method of securing at least two parts | |
| US20180202256A1 (en) | Apparatus for use in a fluid conduit | |
| US5407011A (en) | Downhole mill and method for milling | |
| US10718178B2 (en) | Packer with pivotable anti-extrusion elements | |
| CA2616175A1 (en) | Mid-seal for expandable connections | |
| CN105065401B (en) | expansion bolt assembly | |
| CN101903668A (en) | Device for a friction coupling of two coaxial components | |
| US2706126A (en) | Vibration mountings | |
| CN205089787U (en) | Pin | |
| JP2016522876A (en) | Pipe fitting | |
| CN201627554U (en) | Device for installing inflatable metal tube in unstable wellbore | |
| US10648277B2 (en) | Supporting device for a sealing element in well plug | |
| US20080156501A1 (en) | Non-backed-up packing element system | |
| CN105735908A (en) | Drill rod connector and drilling machine | |
| CN211314158U (en) | Improved framework rubber cylinder of packer | |
| US20180334879A1 (en) | Mechanical support ring for elastomer seal | |
| CN105221097B (en) | Inflatable sealing device for packer and the packer including it | |
| CN212671696U (en) | Soluble bridge plug sealing device | |
| CN110388191B (en) | Rubber cylinder supporting device of large-expansion open hole well packer and packer | |
| CN211314159U (en) | Framework rubber barrel of packer | |
| CN106826475B (en) | Process the taper sleeve type grinding attachment of inverted cone surface sealing ring | |
| CN203772494U (en) | Inner expanding type hydraulic pressure test tool | |
| CN108412452B (en) | Packer and application method thereof | |
| CN219013071U (en) | Universal hydraulic slip ring locking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Andersen Peter Inventor after: Liu Feixiang Inventor after: Cheng Yongliang Inventor after: Zheng Daqiao Inventor after: Ma Chengbiao Inventor after: Liu Zaizheng Inventor after: Cao Yapeng Inventor after: Zou Liyong Inventor after: He Erchun Inventor before: Liu Feixiang Inventor before: Cheng Yongliang Inventor before: Zheng Daqiao Inventor before: Ma Chengbiao Inventor before: Liu Zaizheng Inventor before: Cao Yapeng Inventor before: Zou Liyong Inventor before: He Erchun |
|
| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |
|
| RJ01 | Rejection of invention patent application after publication |