CN107738907B - Bellows propelling movement equipment - Google Patents
Bellows propelling movement equipment Download PDFInfo
- Publication number
- CN107738907B CN107738907B CN201710790288.0A CN201710790288A CN107738907B CN 107738907 B CN107738907 B CN 107738907B CN 201710790288 A CN201710790288 A CN 201710790288A CN 107738907 B CN107738907 B CN 107738907B
- Authority
- CN
- China
- Prior art keywords
- fixed
- bellows
- limiting
- rod
- fixed frame
- 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
- 230000005540 biological transmission Effects 0.000 description 27
- 229920001903 high density polyethylene Polymers 0.000 description 4
- 239000004700 high-density polyethylene Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/82—Rotary or reciprocating members for direct action on articles or materials, e.g. pushers, rakes, shovels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
- B65G2201/0276—Tubes and pipes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
- Diaphragms And Bellows (AREA)
Abstract
Description
技术领域Technical field
本发明涉及波纹管相关技术领域,具体为一种波纹管推送设备。The invention relates to the technical field related to corrugated pipes, and specifically relates to a corrugated pipe pushing device.
背景技术Background technique
HDPE双壁波纹管,简称PE波纹管,双壁波纹管材是以高密度聚乙烯为原料的一种新型轻质管材,具有重量轻、耐高压、韧性好、施工快、寿命长等特点,双壁波纹管大量应用于城市污水和雨水的排放回收,以及农业、化工、地下通信管道等管网中。现有技术的HDPE双壁波纹管内壁平滑,外壁呈梯形波纹状,抗冲击强度高、耐腐蚀性强、可适应土壤的不均匀沉浮等多种优点,而现实中HDPE双壁波纹管生产的过程中,很少有专门针对于波纹管的推送装置,这也变相的导致了生产效率的下降,为此我们提出一种波纹管推送设备来解决以上问题。HDPE double-wall corrugated pipe, referred to as PE corrugated pipe, double-wall corrugated pipe is a new type of lightweight pipe made of high-density polyethylene. It has the characteristics of light weight, high pressure resistance, good toughness, fast construction, and long life. Wall corrugated pipes are widely used in the discharge and recovery of urban sewage and rainwater, as well as in pipe networks such as agriculture, chemical industry, and underground communication pipelines. The existing HDPE double-wall corrugated pipe has a smooth inner wall and a trapezoidal corrugated outer wall. It has many advantages such as high impact strength, strong corrosion resistance, and can adapt to uneven ups and downs of soil. However, in reality, HDPE double-wall corrugated pipes are produced During the process, there are few pushing devices specifically for bellows, which also leads to a decrease in production efficiency in disguise. For this reason, we propose a bellows pushing device to solve the above problems.
发明内容Contents of the invention
本发明的目的在于提供一种波纹管推送设备,以解决上述背景技术中提出的问题。The object of the present invention is to provide a bellows pushing device to solve the problems raised in the above background art.
为实现上述目的,本发明提供如下技术方案:一种波纹管推送设备,包括固定框架以及波纹管,该波纹管设置于固定框架上,固定框架基于波纹管对称设置有两个,且波纹管在固定框架上的推送电机的推动下工作,所述固定框架的上端面设置有限位筒,该限位筒的上端设置有第一紧固螺栓以及限位块,下端设置有固定杆以及限位块,且固定框架的内侧设置有连接杆,所述固定杆的下端固定于固定框架上,上端贯穿限位筒设置,第一紧固螺栓与固定杆螺纹连接,且固定杆与限位筒活动连接,所述连接杆上设置有传动轮,该传动轮的外表面设置有间隔距离相等的固定块,且传动轮的侧边设置有固定板,第二紧固螺栓贯穿固定板与连接杆螺纹连接。In order to achieve the above object, the present invention provides the following technical solution: a bellows pushing device, including a fixed frame and a bellows. The bellows is arranged on the fixed frame. There are two fixed frames symmetrically arranged based on the bellows, and the bellows are in It works under the push of the push motor on the fixed frame. The upper end surface of the fixed frame is provided with a limiting cylinder. The upper end of the limiting cylinder is provided with a first fastening bolt and a limiting block, and the lower end is provided with a fixed rod and a limiting block. , and a connecting rod is provided inside the fixed frame, the lower end of the fixed rod is fixed on the fixed frame, the upper end is set through the limiting cylinder, the first fastening bolt is threadedly connected to the fixed rod, and the fixed rod is movably connected to the limiting cylinder , a transmission wheel is provided on the connecting rod, the outer surface of the transmission wheel is provided with fixed blocks at equal intervals, and a fixed plate is provided on the side of the transmission wheel, and the second fastening bolt penetrates the fixed plate and is threadedly connected to the connecting rod .
优选的,所述固定块的宽度与波纹管上的相连的两个螺牙之间的距离相等,该传动轮设置有三个,且三个传动轮之间始终设置呈夹角状。Preferably, the width of the fixed block is equal to the distance between the two connected threads on the bellows. There are three transmission wheels, and the three transmission wheels are always arranged in an included angle.
优选的,所述传动轮的内壁上固定有轴承,该轴承与连接杆滑动连接,且固定板与轴承的内环固定连接,传动轮与波纹管滑动连接,且位于连接杆两端的传动轮的外侧设置有固定板,中间的传动轮两侧均设置有固定板。Preferably, a bearing is fixed on the inner wall of the transmission wheel, the bearing is slidingly connected to the connecting rod, and the fixed plate is fixedly connected to the inner ring of the bearing. The transmission wheel is slidingly connected to the bellows, and the transmission wheel is located at both ends of the connecting rod. A fixed plate is provided on the outside, and a fixed plate is provided on both sides of the middle transmission wheel.
优选的,所述限位块基于呈“沙漏”状的限位筒对称设置有两个,该上端的限位块与第一紧固螺栓固定连接,下端的限位块与固定杆固定连接,限位块的直径大于固定杆的直径,且限位筒的外表面设置有与波纹管外径相同形状的环形槽。Preferably, two of the limit blocks are symmetrically arranged based on the "hourglass" shaped limit cylinder, the upper limit block is fixedly connected to the first fastening bolt, and the lower end limit block is fixedly connected to the fixed rod. The diameter of the limiting block is larger than the diameter of the fixed rod, and the outer surface of the limiting cylinder is provided with an annular groove having the same shape as the outer diameter of the bellows.
与现有技术相比,本发明的有益效果是:本发明操作方便,设置合理;Compared with the prior art, the beneficial effects of the present invention are: the present invention is easy to operate and reasonably set up;
1、通过将固定块的宽度设置与波纹管上相连的两个螺牙之间的距离相等,且传动轮之间始终设置呈夹角状,使此新型结构可以完全与波纹管相合;1. By setting the width of the fixed block to be equal to the distance between the two screw threads connected to the bellows, and always setting the angle between the transmission wheels, this new structure can be completely integrated with the bellows;
2、通过将传动轮的内壁上固定有轴承,该轴承与连接杆滑动连接,且固定板与轴承的内环固定连接,使此新型结构可以根据波纹管的工作状态进行传动轮位置的调节,切合实际;2. By fixing a bearing on the inner wall of the transmission wheel, the bearing is slidingly connected to the connecting rod, and the fixed plate is fixedly connected to the inner ring of the bearing, this new structure can adjust the position of the transmission wheel according to the working status of the bellows. realistic;
3、通过将上端的限位块与第一紧固螺栓固定连接,下端的限位块与固定杆固定连接,且限位筒的外表面设置有与波纹管外径相同形状的环形槽,使此新型结构中波纹管的传动更加顺畅。3. The upper limit block is fixedly connected to the first fastening bolt, the lower limit block is fixedly connected to the fixed rod, and the outer surface of the limit cylinder is provided with an annular groove of the same shape as the outer diameter of the bellows, so that The transmission of the bellows in this new structure is smoother.
附图说明Description of drawings
图1为本发明结构主视图;Figure 1 is a front view of the structure of the present invention;
图2为本发明结构侧视图。Figure 2 is a side view of the structure of the present invention.
图中:1固定框架、2限位筒、3第一紧固螺栓、4限位块、5传动轮、6连接杆、7固定块、8固定板、9第二紧固螺栓、10环形槽、11固定杆。In the picture: 1 fixed frame, 2 limit cylinder, 3 first fastening bolt, 4 limit block, 5 transmission wheel, 6 connecting rod, 7 fixed block, 8 fixed plate, 9 second fastening bolt, 10 annular groove , 11 fixed rod.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.
请参阅图1-2,本发明提供一种技术方案:一种波纹管推送设备,包括固定框架1以及波纹管,该波纹管设置于固定框架1上,固定框架1基于波纹管对称设置有两个,且波纹管在固定框架1上的推送电机的推动下工作,固定框架1的上端面设置有限位筒2,该限位筒2的上端设置有第一紧固螺栓3以及限位块4,下端设置有固定杆11以及限位块4,限位块4基于呈“沙漏”状的限位筒2对称设置有两个,该上端的限位块4与第一紧固螺栓3固定连接,下端的限位块4与固定杆11固定连接,限位块4的直径大于固定杆11的直径,且限位筒2的外表面设置有与波纹管外径相同形状的环形槽10,固定框架1的内侧设置有连接杆6,使此新型结构中波纹管的传动更加顺畅。Please refer to Figures 1-2. The present invention provides a technical solution: a bellows pushing device, including a fixed frame 1 and a bellows. The bellows is arranged on the fixed frame 1. The fixed frame 1 is symmetrically arranged with two bellows. and the bellows works under the push of the push motor on the fixed frame 1. The upper end surface of the fixed frame 1 is provided with a limiting cylinder 2. The upper end of the limiting cylinder 2 is provided with a first fastening bolt 3 and a limiting block 4. , the lower end is provided with a fixed rod 11 and a limit block 4. Two limit blocks 4 are symmetrically arranged based on the "hourglass" shaped limit cylinder 2. The upper end limit block 4 is fixedly connected to the first fastening bolt 3 , the limiting block 4 at the lower end is fixedly connected to the fixed rod 11, the diameter of the limiting block 4 is larger than the diameter of the fixed rod 11, and the outer surface of the limiting cylinder 2 is provided with an annular groove 10 with the same shape as the outer diameter of the bellows, fixed A connecting rod 6 is provided on the inner side of the frame 1 to make the transmission of the bellows in this new structure smoother.
固定杆11的下端固定于固定框架1上,上端贯穿限位筒2设置,第一紧固螺栓3与固定杆11螺纹连接,且固定杆11与限位筒2活动连接。连接杆6上设置有传动轮5,传动轮5的内壁上固定有轴承,该轴承与连接杆6滑动连接,且固定板8与轴承的内环固定连接,传动轮5与波纹管滑动连接,且位于连接杆6两端的传动轮5的外侧设置有固定板8,中间的传动轮5两侧均设置有固定板8,使此新型结构可以根据波纹管的工作状态进行传动轮5位置的调节,切合实际。The lower end of the fixed rod 11 is fixed on the fixed frame 1, and the upper end is provided through the limiting cylinder 2. The first fastening bolt 3 is threadedly connected to the fixed rod 11, and the fixed rod 11 is movably connected to the limiting cylinder 2. The connecting rod 6 is provided with a transmission wheel 5, and a bearing is fixed on the inner wall of the transmission wheel 5. The bearing is slidingly connected to the connecting rod 6, and the fixed plate 8 is fixedly connected to the inner ring of the bearing. The transmission wheel 5 is slidingly connected to the bellows. And there are fixed plates 8 on the outside of the transmission wheel 5 located at both ends of the connecting rod 6, and fixed plates 8 are provided on both sides of the middle transmission wheel 5, so that this new structure can adjust the position of the transmission wheel 5 according to the working status of the bellows. ,realistic.
传动轮5的外表面设置有间隔距离相等的固定块7,且传动轮5的侧边设置有固定板8,第二紧固螺栓9贯穿固定板8与连接杆6螺纹连接,固定块7的宽度与波纹管上的相连的两个螺牙之间的距离相等,该传动轮5设置有三个,且三个传动轮5之间始终设置呈夹角状,使此新型结构在波纹管传动状态下,可以完全与波纹管相合。The outer surface of the transmission wheel 5 is provided with fixed blocks 7 at equal intervals, and the side of the transmission wheel 5 is provided with a fixed plate 8. The second fastening bolt 9 penetrates the fixed plate 8 and is threadedly connected to the connecting rod 6. The fixed blocks 7 The width is equal to the distance between the two connected threads on the bellows. There are three transmission wheels 5, and the three transmission wheels 5 are always arranged in an included angle, so that this new structure can be in the bellows transmission state. It can be completely matched with the bellows.
工作原理:当需要进行波纹管的传动时,固定框架1上的推送电机先对波纹管进行推动,波纹管逐渐向连接杆6上靠近,波纹管在到达连接杆6上时,先是接触三个传动轮5,然后固定块7与波纹管进行传动连接,波纹管持续前行,再就是接触到限位筒2,此时的限位筒2处于固定杆11的上端,第一紧固螺栓3与固定杆11螺纹连接,限位筒2与固定杆11上的环形槽10传动连接,工作完成。Working principle: When the bellows needs to be driven, the push motor on the fixed frame 1 first pushes the bellows, and the bellows gradually approaches the connecting rod 6. When the bellows reaches the connecting rod 6, it first contacts three The transmission wheel 5 and then the fixed block 7 are connected to the bellows. The bellows continues to move forward and then contacts the limiting cylinder 2. At this time, the limiting cylinder 2 is at the upper end of the fixed rod 11, and the first fastening bolt 3 It is threadedly connected to the fixed rod 11, and the limiting cylinder 2 is drivingly connected to the annular groove 10 on the fixed rod 11, and the work is completed.
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修该、替换和变型,本发明的范围由所附权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, and modifications can be made to these embodiments without departing from the principles and spirit of the invention. Alterations and modifications, the scope of the invention is defined by the appended claims and their equivalents.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710790288.0A CN107738907B (en) | 2017-09-05 | 2017-09-05 | Bellows propelling movement equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710790288.0A CN107738907B (en) | 2017-09-05 | 2017-09-05 | Bellows propelling movement equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107738907A CN107738907A (en) | 2018-02-27 |
CN107738907B true CN107738907B (en) | 2023-11-24 |
Family
ID=61235192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710790288.0A Active CN107738907B (en) | 2017-09-05 | 2017-09-05 | Bellows propelling movement equipment |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107738907B (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10279031A (en) * | 1997-04-04 | 1998-10-20 | Nkk Corp | Roller device for pipe movement |
CN102837965A (en) * | 2012-09-05 | 2012-12-26 | 太原重工股份有限公司 | Lateral pull-out device for steel pipe |
CN103010737A (en) * | 2012-11-23 | 2013-04-03 | 无锡鑫常钢管有限责任公司 | Steel tube vortex crack detection discharging mechanism |
CN202897483U (en) * | 2012-11-02 | 2013-04-24 | 广州枫叶管业有限公司 | Automatic corrugated pipe steel belt conveying device |
CN103723433A (en) * | 2014-01-27 | 2014-04-16 | 宁波科鑫腐蚀控制工程有限公司 | Steel-pipe painting and transferring roller group and steel-pipe painting and transferring mechanism |
JP2014237540A (en) * | 2013-06-10 | 2014-12-18 | 日鉄住金パイプライン&エンジニアリング株式会社 | Pipe unloading device and pipe unloading method |
CN104609231A (en) * | 2015-01-23 | 2015-05-13 | 苏州惠斯福自动化科技有限公司 | Conveying device of corrugated pipe cut-off machine |
JP2017024854A (en) * | 2015-07-22 | 2017-02-02 | 矢崎化工株式会社 | Receiving pipe, wheel conveyor and circulation shelf device |
CN207209156U (en) * | 2017-09-05 | 2018-04-10 | 煌盛集团重庆管业有限公司 | A kind of HDPE double-wall corrugated pipes conveyer |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2570728A1 (en) * | 2006-12-14 | 2008-06-14 | Guy Rodrigue | Guide apparatus to guide axial pipe movement |
-
2017
- 2017-09-05 CN CN201710790288.0A patent/CN107738907B/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10279031A (en) * | 1997-04-04 | 1998-10-20 | Nkk Corp | Roller device for pipe movement |
CN102837965A (en) * | 2012-09-05 | 2012-12-26 | 太原重工股份有限公司 | Lateral pull-out device for steel pipe |
CN202897483U (en) * | 2012-11-02 | 2013-04-24 | 广州枫叶管业有限公司 | Automatic corrugated pipe steel belt conveying device |
CN103010737A (en) * | 2012-11-23 | 2013-04-03 | 无锡鑫常钢管有限责任公司 | Steel tube vortex crack detection discharging mechanism |
JP2014237540A (en) * | 2013-06-10 | 2014-12-18 | 日鉄住金パイプライン&エンジニアリング株式会社 | Pipe unloading device and pipe unloading method |
CN103723433A (en) * | 2014-01-27 | 2014-04-16 | 宁波科鑫腐蚀控制工程有限公司 | Steel-pipe painting and transferring roller group and steel-pipe painting and transferring mechanism |
CN104609231A (en) * | 2015-01-23 | 2015-05-13 | 苏州惠斯福自动化科技有限公司 | Conveying device of corrugated pipe cut-off machine |
JP2017024854A (en) * | 2015-07-22 | 2017-02-02 | 矢崎化工株式会社 | Receiving pipe, wheel conveyor and circulation shelf device |
CN207209156U (en) * | 2017-09-05 | 2018-04-10 | 煌盛集团重庆管业有限公司 | A kind of HDPE double-wall corrugated pipes conveyer |
Also Published As
Publication number | Publication date |
---|---|
CN107738907A (en) | 2018-02-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN203702167U (en) | Composite segment structure | |
CN207485448U (en) | A kind of shield tunnel liner ring | |
CN107738907B (en) | Bellows propelling movement equipment | |
CN205171502U (en) | Device is flowed in lap guard of underground continuous wall flexible rubber hose formula | |
CN204420343U (en) | Large diameter wound pipe | |
CN206582418U (en) | A kind of hydraulic engineering pipeline | |
CN212251590U (en) | A reinforced concrete drainage pipe that is easy to butt | |
CN206629645U (en) | A kind of water channel water intaking translation type sprinkler | |
CN204704500U (en) | A kind of steel band reinforced polyethylene spiral ripple pipe | |
CN207209156U (en) | A kind of HDPE double-wall corrugated pipes conveyer | |
CN204572491U (en) | A kind of submersible type emergency repair pump | |
CN205278649U (en) | Improve double -walled bellows interface sealing performance's novel sealing washer | |
CN206054973U (en) | Split type polyethylene solid wall pipe | |
CN204692798U (en) | Be wound around in a kind of steel disc and strengthen structured wall popes | |
CN205134749U (en) | Circular plastic tubing of bamboo -shaped prestressing force | |
CN205134959U (en) | Flat mouthful of plastic tubing of bamboo -shaped prestressing force | |
CN203517170U (en) | Detachable winding die | |
CN204922270U (en) | Adopt drain pipe in T steel area | |
CN202591934U (en) | Multifunctional hoe handle installer | |
CN205278577U (en) | Sectional type strenghthened type bellows | |
CN204703213U (en) | A kind of groover grab bucket of convenient brush wall | |
CN203979697U (en) | Elastic damage preventing PP-R pipe joint | |
CN214274843U (en) | Municipal administration road water supply and drainage pipeline | |
CN204345104U (en) | A kind of supplying drainage | |
CN203821638U (en) | Assembly type steel structure wallboard joint |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
TA01 | Transfer of patent application right | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20231102 Address after: 833200 No. 6, Chengqi Road, petrochemical industrial park, Kuitun city, Ili Kazakh Autonomous Prefecture, Xinjiang Uygur Autonomous Region Applicant after: XINJIANG DENGHUANG PIPE INDUSTRIAL CO.,LTD. Address before: Floor 1, building 26, science and technology hall, No.384, science and technology first street, Urumqi high tech Industrial Development Zone (new urban area), Xinjiang Uygur Autonomous Region 830000 Applicant before: Urumqi thinking Lianhua Mdt InfoTech Ltd. Effective date of registration: 20231102 Address after: Floor 1, building 26, science and technology hall, No.384, science and technology first street, Urumqi high tech Industrial Development Zone (new urban area), Xinjiang Uygur Autonomous Region 830000 Applicant after: Urumqi thinking Lianhua Mdt InfoTech Ltd. Address before: No. 12, Jiangang Village, Pingshan Industrial Park, Wansheng Economic Development Zone, Chongqing, 400800 Applicant before: HUANGSHENG GROUP CHONGQING PIPE INDUSTRY CO.,LTD. |
|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
OL01 | Intention to license declared | ||
OL01 | Intention to license declared |