CN101628385B - Special tension spring for processing perforating bullet excircle - Google Patents
Special tension spring for processing perforating bullet excircle Download PDFInfo
- Publication number
- CN101628385B CN101628385B CN2009103024242A CN200910302424A CN101628385B CN 101628385 B CN101628385 B CN 101628385B CN 2009103024242 A CN2009103024242 A CN 2009103024242A CN 200910302424 A CN200910302424 A CN 200910302424A CN 101628385 B CN101628385 B CN 101628385B
- Authority
- CN
- China
- Prior art keywords
- spring
- rises
- tension spring
- pull bar
- shell fragment
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention discloses a special tension spring for processing a perforating bullet excircle, comprising a tension spring body, a tension spring adjusting sleeve and a tension spring pull rod. The tension spring body is provided with a connecting flange and elastic tension spring blades, wherein the center of the connecting flange is provided with a jack; the elastic tension spring blades are uniformly aligned along the edge of the jack to form a tension sleeve and are respectively provided with a conical surface; the tension spring pull rod is movably connected with the tension spring body by the jack; one end of the tension spring pull rod is provided with conical surfaces corresponding to the conical surfaces of the elastic tension spring blades; and the tension spring adjusting sleeve is mounted outside the connecting flange and is provided with adjusting screws which are movably connected with the connecting flange. The special tension spring for processing the perforating bullet excircle enables the connection between the tension spring and a digital control lathe to be more flexible by optimizing a connection mode with the digital control lathe so that not only the coaxiality between the tension spring and the digital control lathe can be adjusted, but also the processing process of the tension spring body of the tension spring can be extremely simple, thereby being beneficial to improving the rigidity of the tension spring.
Description
Technical field
The present invention relates to a kind of parts and add the anchor clamps that use man-hour, relate in particular to the special-purpose spring that rises of cylindrical processing of the perforating bullet that uses in a kind of oil exploitation.
Background technology
Perforating bullet has a fusiform outside, is generally circular arc, generally is to get by lathe in machining in the prior art.Because the perforating bullet structure is comparatively special, its cross section is a spill, therefore all is equipped with special-purpose anchor clamps at every numerically controlled lathe that is used to process the perforating bullet excircle face.The anchor clamps that are used for fixing perforating bullet in the prior art on lathe are the expansion string type structure.The fastener that has the spring shell fragment that rises is welded on the ring flange of numerically controlled lathe, and the position of the spring shell fragment that rises after fixing just can not adjust again; The manufacturing that has the fastener of the spring shell fragment that rises also must rely on numerically controlled lathe, and at first the iron block with suitable shape is fixed on the numerically controlled lathe, operates in by turning etc. then and forms the spring shell fragment that rises on the iron block, and boring is last again forms required structure.Mix the spring pull bar that rises during use, an end of the spring pull bar that rises directly is connected with the main shaft of numerically controlled lathe.There is the shortcoming of axiality and anchor clamps poor rigidity in such anchor clamps.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of special tension spring for processing perforating bullet excircle of regulating axiality and having better rigidity.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: this special tension spring for processing perforating bullet excircle comprises rise the spring body and the spring adjustment cover that rises that can be connected with the spindle flange disk activity of numerically controlled lathe, the spring pull bar that rises that can flexibly connect with the main shaft pull bar of numerically controlled lathe, the described spring body that rises is provided with flange connector and the spring shell fragment that rises, be provided with jack in the middle of the described flange connector, the described spring shell fragment that rises is evenly distributed formation ringfeder along the jack edge, the described spring shell fragment that rises is provided with the conical surface, the described spring pull bar that rises flexibly connects by the jack and the spring body that rises, described spring pull bar one end that rises is provided with the corresponding conical surface of the conical surface with the spring shell fragment that rises, the described spring adjustment cover that rises is installed in the outside of flange connector, the described spring adjustment of rising is arranged with adjustment screw, and described adjustment screw and flange connector flexibly connect.Like this rise spring and comparison of the prior art, the most tangible place is that this spring body that rises can be connected with the ring flange of numerically controlled lathe is detachable, the processing of spring body of rising like this can reduce the dependence to numerically controlled lathe, and then the spring body that rises can be increased the rigidity of the spring body that rises by technologies such as quenchings.The spring body that rises is can turn adjustment screw when the ring flange of numerically controlled lathe connects, and the feasible spring body that rises can move relative to ring flange, reaches the purpose of the axiality of the main shaft of adjusting rise spring body and numerically controlled lathe.
As of the present invention preferred, the spring that rises also comprises the end face positioning sleeve, and described end face positioning sleeve is movably connected in this end that the spring body that rises is provided with the spring shell fragment that rises, and described end face positioning sleeve, the spring body and rising of rising are movably connected by spacer pin between the spring pull bar.The effect of end face positioning sleeve and spacer pin has been arranged, and the spring pull bar that rises just can not go beyond the limit of the position, and then has well protected the spring body that rises, and protects the spring that rises not to be damaged when sky presss from both sides, and prolong the service life of the feasible spring body that rises greatly.
As of the present invention preferred, the described spring pull bar that rises is provided with the chute vertically that is used to install spacer pin, and described chute two ends are cambered surface, and the corresponding chute of an end of described spacer pin is curved.Can conveniently process like this, directly just can obtain chute by drill bit.Simultaneously, guaranteed spacer pin and rise and have bigger contact-making surface between the spring pull bar.
As of the present invention preferred, described end face positioning sleeve inwall and rise and be provided with the gap between the spring shell fragment.During the spring shell fragment that rises work the deformation bending can take place, so in order not influence the spring shell fragment distortion of rising, the end face positioning sleeve must separate with the spring shell fragment that rises.But can be subjected to stopping of end face positioning sleeve behind the spring shell fragment bending that rises, the end face positioning sleeve and the gap of rising between the spring shell fragment can limit the amount of bow of spring shell fragment when outwardly-bent that rise like this, and the spring shell fragment amount of bow that is unlikely to rise is excessive and be damaged.
As of the present invention preferred, an end of the described spring body that rises is provided with elongated end, and described jack runs through this elongated end.Elongated end has prolonged jack length, thus the stationarity of the spring pull bar motion that more helps rising.Simultaneously elongated end has increased the ring flange joint face of rise spring body and numerically controlled lathe, the installation of the body of being convenient to decorate.
As of the present invention preferred, the other end of the described spring pull bar that rises flexibly connects by the main shaft pull bar of buffering connector and numerically controlled lathe.The buffering connector can be under the situation that the spring that rises unclamps, assurance power that the spring pull bar breaks away from the spring shell fragment that the rises spring shell fragment that only rises that rises provides because of the elastic force that distortion produces, the gap of rising by the spring pull bar like this and rising between the spring shell fragment is just not too large, has avoided foreign material to enter rising the spring pull bar and the gap between the spring shell fragment of rising.And the identical precision that rises by the spring shell fragment and rise between the spring pull bar is improved greatly by buffering connector tensioning rising spring, the clamping better effects if of the spring that rises.As of the present invention preferred, described buffering connector comprises attaching nut and adapter sleeve, described attaching nut flexibly connects with the spring pull bar that rises, the main shaft pull bar of described adapter sleeve and numerically controlled lathe flexibly connects, described adapter sleeve is provided with sliding eye, described sliding eye is stairstepping, and described attaching nut is the T font, and described T font attaching nut's big end is positioned at the macropore of stairstepping sliding eye.
The present invention adopts technique scheme: special tension spring for processing perforating bullet excircle is by the connected mode of optimization with numerically controlled lathe, make rise between spring and the numerically controlled lathe be connected more flexible, so not only can regulate the axiality of the opinion of rise spring and numerically controlled lathe, and the process of the spring body that rises of the spring that rises can become very simple, helps improving the rigidity of spring of rising.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is further described in detail.
Fig. 1 is the use structural representation of a kind of special tension spring for processing perforating bullet excircle of the present invention;
Fig. 2 is the front view of the spring body that rises of a kind of special tension spring for processing perforating bullet excircle of the present invention;
Fig. 3 is the A-A figure of Fig. 2;
Fig. 4 is the front view of the end face positioning sleeve of a kind of special tension spring for processing perforating bullet excircle of the present invention;
Fig. 5 is the A-A figure of Fig. 4;
Fig. 6 is the front view of the spring adjustment cover that rises of a kind of special tension spring for processing perforating bullet excircle of the present invention;
Fig. 7 is the A-A figure of Fig. 6;
Fig. 8 is the front view of the spring pull bar that rises of a kind of special tension spring for processing perforating bullet excircle of the present invention;
Fig. 9 is the A-A figure of Fig. 8;
Figure 10 is the attaching nut's of a kind of special tension spring for processing perforating bullet excircle of the present invention front view;
Figure 11 is the A-A figure of Figure 10;
Figure 12 is the front view of the adapter sleeve of a kind of special tension spring for processing perforating bullet excircle of the present invention;
Figure 13 is the A-A figure of Figure 12;
Figure 14 is the front view of the spacer pin of a kind of special tension spring for processing perforating bullet excircle of the present invention;
Figure 15 is the upward view of Figure 14.
The specific embodiment
As shown in Figure 1, special tension spring for processing perforating bullet excircle comprise the spring body 1 that rises, the spring pull bar 2 that rises, the spring adjustment of rising cover 3, end face positioning sleeve 4 and buffering connector.Shown in Fig. 2,3, spring body 1 mid portion that rises is discoid flange connector 5, is respectively equipped with rise spring shell fragment 6 and a cylindrical elongated end in both sides.Be provided with jack 7 in spring body 1 inside of rising, jack 7 is provided with this end of the spring shell fragment 6 that rises until the spring body 1 that rises from elongated end.The spring body 1 that rises is provided with four spring shell fragments 6 that rise, and the spring shell fragment 6 that rises evenly distributes around jack 7 and forms ringfeder, and is provided with the conical surface in this side towards jack 7.Flange connector 5 radiuses are much larger than the radius of cylindrical elongated end, and simultaneously also greater than around the jack 7 equally distributed spring shell fragment 6 residing radiuses that rise, thereby the cross section of the spring body 1 that rises is cross.All be provided with arc-shaped notch on the adjacent two spring shell fragments 6 that rise, two adjacent recesses have formed the through hole 8 of an oval shape relatively.Flange connector 5 be provided with vertical diameter to screw I 9.
Shown in Fig. 8,9, the spring pull bar 2 that rises is column, and an end is provided with projection, is provided with the conical surface on projection, and this conical surface is identical with the conical surface on the spring shell fragment 6 that rises.The spring pull bar 2 that rises is installed in the jack 7, and the conical surface of the spring pull bar 2 that rises after the installation coincide mutually with the conical surface of the spring shell fragment 6 that rises, and both can fit tightly together after connecting.Be provided with a chute 10 on the spring pull bar 2 that rises, chute 10 is the oval shape of stretching, and two ends are curved.
Shown in Fig. 6,7, the spring adjustment of rising cover 3 is circular, in a circular mounting hole I 11 will be arranged.The spring adjustment of rising cover 3 be provided with radially screw II 12 and vertical diameter to 13, four screw II 12 of screw III and four screw III 13 all be evenly distributed on the spring adjustment cover 3 that rises.Screw II 12 and installing hole I 11 are communicated with.
Shown in Fig. 4,5, be provided with circular mounting hole II 14 in the middle of the end face positioning sleeve 4, be provided with the stopper slot 15 that prolongs radially and be located along the same line in a side of end face positioning sleeve 4, this stopper slot 15 is communicated with installing hole II 14.This end face positioning sleeve 4 is fixedly connected on the spring body 1 that rises by screw, and the spring shell fragment 6 that rises after the connection is positioned at installing hole II 14, and the spring shell fragment 6 that rises separates with end face positioning sleeve 4.Back stopper slot 15, through hole 8 and chute 10 are installed are located along the same line, and intert simultaneously in stopper slot 15, through hole 8 and chute 10 with a spacer pin 16.Shown in Figure 14,15, spacer pin 16 integral body are convex shape, the cambered surface of the cambered surface that is shaped as corresponding stopper slot 15 of one end, and two ends are narrower, wide middle.The two ends of spacer pin 16 are installed in the stopper slot 15, and mid portion is positioned at through hole 8 and chute 10.Because chute 10 length restriction, the scope of activities of the feasible spring pull bar 2 that rises is restricted.
During use, as described in Figure 1, the spring body 1 that will rise is fixedly connected on the ring flange 17 of numerically controlled lathe by be screwed into screw in screw I 9, is screwed into screw in the screw III 13 and is fixed on the ring flange 17 will decorateing to adjust to be enclosed within, and flange connector 5 is located in the installing hole I 11 like this.Be screwed with adjustment screw in screw II 12, this adjustment screw can contact with flange connector 5, thereby can locate the position of spring body 1 of rising, and then is used for regulating the position of spring body 1 and the main shaft of numerically controlled lathe of rising.The other end of spring pull bar 2 of rising is connected with the main shaft pull bar 18 of numerically controlled lathe by the buffering connector, cushions connector and comprises attaching nut 20 and adapter sleeve 19.Shown in Figure 10,11, attaching nut 20 longitudinal sections are the T font, and the centre is provided with screw, rise to pass through screwed together between spring pull bar 2 and the attaching nut 20.Shown in Figure 12,13, be provided with a sliding eye 21 in the middle of the adapter sleeve 19, sliding eye 21 is stairstepping, the macropore of sliding eye 21 and attaching nut's 20 big end is adaptive, the aperture of sliding eye 21 and attaching nut's 20 small end is adaptive, adapter sleeve 19 can only break away from attaching nut 20 from an end after adapter sleeve 19 is installed on the attaching nut 20 like this, and this end is positioned at the link of the attaching nut 20 and the spring pull bar 2 that rises; And adapter sleeve 19 is connected with the main shaft pull bar 18 of numerically controlled lathe.The aperture of stairstepping sliding eye 21 is the square opening of band fillet, and T font attaching nut's small end is the square column of band fillet, and adaptive with the square opening of described band fillet, attaching nut 20 is subjected to the restriction of adapter sleeve 19 in the athletic meeting of sliding eye 21 like this.
During work, as shown in Figure 1, the main shaft pull bar 18 of numerically controlled lathe fits tightly the conical surface of the conical surface on the spring pull bar 2 that rises and the spring shell fragment 6 that rises, and firmly acts on the spring shell fragment 6 that rises by buffering connector pulling rising spring pull bar 2.And then the stressed generations distortion of the spring shell fragment 6 of rising, the spring shell fragment 6 that rises is outwardly-bent, and ringfeder opens, and is enclosed within the spring shell fragment 6 that rises that the perforating bullet 22 of spring shell fragment 6 outsides of rising will be bent like this and tightly blocks.Because the effect of spacer pin 16 is arranged, the spring pull bar 2 that rises when extreme position can stop by limited pin 16 that the spring shell fragment 6 that rises this moment opens when pulling rises by spring pull bar 2, and the spring shell fragment 6 that rises in the time of can preventing unloaded operation thus is not destroyed.When this spring mechanism of rising unclamps, main shaft pull bar 18 counter motions of numerically controlled lathe, be in the inner power that does not have mutual pulling of buffering connector of stretching this moment, make 2 on spring pull bar be subjected to the rising effect of spring shell fragment 6 of rising like this, and then the spring pull bar 2 that rises under the elastic force effect of the spring shell fragment 6 that rises is reversed pulling, spring shell fragment 6 deformation of rising simultaneously recover, and the perforating bullet 22 that is blocked by the spring shell fragment 6 that rises just can break away from this spring mechanism of rising.
Claims (7)
1. special tension spring for processing perforating bullet excircle, it is characterized in that: this spring that rises comprises rise the spring body (1) and the spring adjustment cover (3) that rises that can flexibly connect with the spindle flange dish (17) of numerically controlled lathe, the spring pull bar (2) that rises that can flexibly connect with the main shaft pull bar (18) of numerically controlled lathe, the described spring body (1) that rises is provided with flange connector (5) and the spring shell fragment (6) that rises, be provided with jack (7) in the middle of the described flange connector (5), the described spring shell fragment (6) that rises is along the evenly distributed formation ringfeder in jack (7) edge, the described spring shell fragment (6) that rises is provided with the conical surface, the described spring pull bar (2) that rises flexibly connects by the jack (7) and the spring body (1) that rises, described spring pull bar (2) one ends that rise are provided with the corresponding conical surface of the conical surface with the spring shell fragment (6) that rises, the described spring adjustment cover (3) that rises is installed in the outside of flange connector (5), the described spring adjustment cover (3) that rises is provided with adjustment screw, and described adjustment screw and flange connector (5) flexibly connect.
2. according to the described special tension spring for processing perforating bullet excircle of claim 1, it is characterized in that: the spring that rises also comprises end face positioning sleeve (4), described end face positioning sleeve (4) is movably connected in this end that the spring body (1) that rises is provided with the spring shell fragment (6) that rises, and described end face positioning sleeve (4), the spring body (1) and rising of rising are movably connected by spacer pin (16) between the spring pull bar (2).
3. according to the described special tension spring for processing perforating bullet excircle of claim 2, it is characterized in that: the described spring pull bar (2) that rises is provided with the chute vertically (10) that is used to install spacer pin (16), described chute (10) two ends are cambered surface, and the corresponding chute of an end of described spacer pin (16) (10) is curved.
4. according to the described special tension spring for processing perforating bullet excircle of claim 2, it is characterized in that: described end face positioning sleeve (4) inwall and rise and be provided with the gap between the spring shell fragment (6).
5. according to claim 1 or 2 described special tension spring for processing perforating bullet excircle, it is characterized in that: a described end that rises by spring body (1) is provided with elongated end, and described jack (7) runs through this elongated end.
6. according to the described special tension spring for processing perforating bullet excircle of claim 1, it is characterized in that: the other end of the described spring pull bar (2) that rises flexibly connects by the main shaft pull bar (18) of buffering connector and numerically controlled lathe.
7. according to the described special tension spring for processing perforating bullet excircle of claim 6, it is characterized in that: described buffering connector comprises attaching nut (20) and adapter sleeve (19), described attaching nut (20) flexibly connects with the spring pull bar (2) that rises, described adapter sleeve (19) flexibly connects with the main shaft pull bar (18) of numerically controlled lathe, described adapter sleeve (19) is provided with sliding eye (21), described sliding eye (21) is stairstepping, described attaching nut (20) longitudinal section is the T font, and described T font attaching nut's (20) big end is positioned at the macropore of stairstepping sliding eye (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103024242A CN101628385B (en) | 2009-08-17 | 2009-08-17 | Special tension spring for processing perforating bullet excircle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103024242A CN101628385B (en) | 2009-08-17 | 2009-08-17 | Special tension spring for processing perforating bullet excircle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101628385A CN101628385A (en) | 2010-01-20 |
| CN101628385B true CN101628385B (en) | 2011-04-06 |
Family
ID=41573756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103024242A Expired - Fee Related CN101628385B (en) | 2009-08-17 | 2009-08-17 | Special tension spring for processing perforating bullet excircle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101628385B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551799A (en) * | 2015-01-07 | 2015-04-29 | 池州共康汽车零部件有限公司 | Turning clamping device with floating tightener |
| CN104772627B (en) * | 2015-02-11 | 2017-01-04 | 宁波圣菲机械制造有限公司 | Perforating charge cartridge case production line |
| CN105904219B (en) * | 2016-06-16 | 2018-04-03 | 宁波圣菲机械制造有限公司 | A kind of perforation shell case primacord mounting groove smoothing chamfering device |
| CN107234456A (en) * | 2017-08-08 | 2017-10-10 | 江南工业集团有限公司 | One kind positioning centering combination clamping device |
| CN114734281A (en) * | 2022-04-15 | 2022-07-12 | 广州市翔翎金属制品有限公司 | Multistation cnc buffering anchor clamps |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7258348B2 (en) * | 2004-12-16 | 2007-08-21 | General Electric Company | Machining fixture for centering and holding workpiece |
| CN101172328A (en) * | 2007-10-19 | 2008-05-07 | 大连机床集团有限责任公司 | Self-alignment cramping arrangement for processing disk cover parts |
| CN201105380Y (en) * | 2007-11-28 | 2008-08-27 | 贵州西南工具(集团)有限公司 | Machining device guaranteeing concentricity of shaft part center hole and excircle |
| CN100482387C (en) * | 2007-05-11 | 2009-04-29 | 湘潭市江南凌志科技有限公司 | Single spindle automatic lathe for sequential operations by moving cutters along axes parallel to principal axis |
| CN201257605Y (en) * | 2008-09-05 | 2009-06-17 | 江南机器（集团）有限公司 | Bidirectional multi-expanding spring precision positioning gripping device |
-
2009
- 2009-08-17 CN CN2009103024242A patent/CN101628385B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7258348B2 (en) * | 2004-12-16 | 2007-08-21 | General Electric Company | Machining fixture for centering and holding workpiece |
| CN100482387C (en) * | 2007-05-11 | 2009-04-29 | 湘潭市江南凌志科技有限公司 | Single spindle automatic lathe for sequential operations by moving cutters along axes parallel to principal axis |
| CN101172328A (en) * | 2007-10-19 | 2008-05-07 | 大连机床集团有限责任公司 | Self-alignment cramping arrangement for processing disk cover parts |
| CN201105380Y (en) * | 2007-11-28 | 2008-08-27 | 贵州西南工具(集团)有限公司 | Machining device guaranteeing concentricity of shaft part center hole and excircle |
| CN201257605Y (en) * | 2008-09-05 | 2009-06-17 | 江南机器（集团）有限公司 | Bidirectional multi-expanding spring precision positioning gripping device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101628385A (en) | 2010-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101628385B (en) | Special tension spring for processing perforating bullet excircle | |
| CN201493497U (en) | Special expansion spring for processing excircle of perforating bullet | |
| CN107939306B (en) | A kind of anti-corrosion offset-type ocean threaded drillpipe | |
| JP2012519087A (en) | Tool holder clamp assembly for cutting insert and its pressure plate {Toolholder clampsemblyforcinginsertsandsandpressing plate} | |
| CN107630666B (en) | A kind of clamping buffer-type ocean threaded drillpipe | |
| CN106245849A (en) | A kind of anchor and steel strand prestress tensioning system automatically | |
| CN104902373A (en) | Headset clamp force regulating mechanism | |
| CN201261103Y (en) | Stud welding chuck | |
| CN204954395U (en) | Multi -purpose anchor clamps of numerical control | |
| CN206429209U (en) | It is installed on the elastic floating guide rail between iron roughneck main pincers and back-up tong | |
| CN209737318U (en) | Grinding device for grinding spherical valve cores | |
| CN210909151U (en) | Integral type knife clamping claw | |
| CN204772082U (en) | Elasticity frock structure of vitrified abrasive | |
| CN209425029U (en) | Axle housing fixture | |
| CN208453854U (en) | Second polyurethane sweeper | |
| CN208227596U (en) | A kind of mechanism of shovel hoe converter automatic compensation gap | |
| CN210650512U (en) | Guide bearing demolishs instrument | |
| CN108506312B (en) | Adjusting screw assembly and manufacturing process thereof | |
| CN110682142A (en) | Electric spindle hydraulic floating tool loosening device | |
| CN202867601U (en) | Flexible coupling | |
| CN212144358U (en) | Spring coupling extension device convenient to use | |
| CN205956547U (en) | Zero clearance draw -in groove coupling mechanism of executor main shaft and valve rod | |
| CN211614354U (en) | Numerical control machine tool clamp | |
| CN217842478U (en) | Automobile steel plate spring | |
| CN218049655U (en) | Quick butt joint device of pipeline |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20160817 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |