CN112082022A - Telescopic connecting device for pipeline connection of underground pipe network system - Google Patents
Telescopic connecting device for pipeline connection of underground pipe network system Download PDFInfo
- Publication number
- CN112082022A CN112082022A CN202010873693.0A CN202010873693A CN112082022A CN 112082022 A CN112082022 A CN 112082022A CN 202010873693 A CN202010873693 A CN 202010873693A CN 112082022 A CN112082022 A CN 112082022A
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- pipe
- fixed
- wall
- clamping
- connection
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- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
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- 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
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses a telescopic connecting device for pipeline connection of an underground pipe network system, which comprises a connecting pipe, wherein the connecting pipe is in an incomplete tubular shape, a penetrating notch is formed in the rear part of the connecting pipe, clamping components for fixing two pipe networks to be connected are respectively arranged on two sides of the connecting pipe, an adjusting component for adjusting the clamping angle of the clamping components is arranged on the clamping components, and an elastic locking structure for fixing the station of the adjusting component is arranged on the adjusting component; the pipe networks of different diameters are clamped and fixed by the clamping assembly adjusting positions of the two sides driven by the adjusting assembly, the adjusting assembly is fixed in position by means of the elastic locking structure, the double-head air cylinders on the upper and lower parts are driven to move so as to drive the clamping assemblies on the two sides to mutually approach and butt joint the two pipe networks, the two pipe networks are fixedly connected in a sealing mode after the two pipe networks are butted, and then the two pipe networks are loosened by the reversely adjusting clamping assemblies.
Description
Technical Field
The invention relates to a connecting tool, in particular to a telescopic connecting device for pipeline connection of an underground pipe network system.
Background
The underground comprehensive pipe network is an important content of city construction and a life line for city survival and development, and has great significance for strengthening the management of comprehensive pipe network data on the safety and development of cities.
At present, the urbanization level of China is continuously improved, the infrastructure development is rapid, and large-scale complicated underground comprehensive pipe networks are preliminarily formed in urban areas.
Because underground pipe network is in underground passage mostly, need the cracked both ends of pulling to draw close the tensile each other when a set of pipe network breaks and needs to connect, draw close tensile butt joint back and connect fixedly, adopt the manpower among the prior art mostly tensile, the expansion joint of pipe network has a great deal of inconvenience.
Disclosure of Invention
Based on the above-mentioned shortcomings in the prior art, the present invention provides a retractable connection device for connecting pipes of an underground piping system.
The invention overcomes the technical problems by adopting the following technical scheme, and specifically comprises the following steps:
a telescopic connecting device for pipeline connection of an underground pipe network system comprises a connecting pipe, wherein the connecting pipe is in an incomplete tubular shape, a penetrating notch is formed in the rear part of the connecting pipe, clamping assemblies for fixing two pipes to be connected are respectively arranged on two sides of the connecting pipe, an adjusting assembly for adjusting the clamping angle of the clamping assemblies is arranged on each clamping assembly, and an elastic locking structure for fixing the stations of the adjusting assemblies is arranged on each adjusting assembly;
the upper and lower sides of the connecting pipe are respectively provided with a driving structure for driving two groups of clamping assemblies to mutually draw close or separate, the driving structure is connected with the clamping assemblies, and the driving structure comprises a double-end cylinder fixed on the outer wall of the connecting pipe and piston rods arranged on two sides of the double-end cylinder in a sliding manner and connected with the clamping assemblies on two sides.
As a further scheme of the invention: the clamping assembly comprises two groups of clamping structures, and each clamping structure comprises a fixed rod fixed on the outer wall of the connecting pipe, a sliding sleeve arranged on the fixed rod in a sliding manner, and swing arms symmetrically arranged on two sides of the sliding sleeve;
wherein, connect through connecting axle rotation each other between two swing arm tip that bilateral symmetry set up be fixed with the fixed pin on the sliding sleeve both sides outer wall, set up on the swing arm with the groove of stepping down of fixed pin slip gomphosis, the swing arm is fixed with the grip block on being located the end in the connecting tube.
As a still further scheme of the invention: the connecting pipe is provided with penetrating grooves for the swing arms to penetrate through, one side of the sliding sleeve, which is close to the outer wall of the connecting pipe, is rotatably provided with a laminating wheel which is in rolling fit with the outer wall of the connecting pipe, and the piston rod is fixedly connected with the sliding sleeve.
As a still further scheme of the invention: the adjusting assembly comprises a convex disc which is rotationally sleeved on the outer wall of the connecting pipe, an outer toothed ring which is fixed on the convex disc, and a gear which is rotationally arranged on the outer wall of the connecting pipe and is meshed with the outer toothed ring;
the gear is connected with the elastic locking structure through an embedded structure, a rotating wheel which is in rolling contact with the surface of the convex disc is rotatably arranged on the connecting shaft, two circles of limiting bulges used for keeping the sliding sleeve consistent with the horizontal position of the convex disc are arranged on the sliding sleeve, and an arc-shaped groove for the sliding sleeve to pass through is formed in the convex disc.
As a still further scheme of the invention: the embedding structure comprises a sleeve shaft rotationally arranged on the outer wall of the connecting pipe and a telescopic shaft embedded with the sleeve shaft in a sliding manner;
the outer wall of the telescopic shaft is provided with a strip-shaped insertion strip, the inner wall of the sleeve shaft is provided with an insertion groove matched with the insertion strip, and the gear is fixed on the telescopic shaft.
As a still further scheme of the invention: the elastic locking structure comprises an adjusting wheel fixed at the end part of the sleeve shaft, an elastic inserting assembly arranged on the outer wall of the connecting pipe and a lock hole which is arranged on the adjusting wheel along the circumferential direction and is used for being matched with the elastic inserting assembly;
and a hollow part for fixedly butting the pipe network is arranged in the middle of the connecting pipe.
As a still further scheme of the invention: the elastic insertion assembly comprises a sleeve seat fixed on the outer wall of the connecting pipe, a bolt connected with the sleeve seat in a sliding manner, and a pressure spring elastically connecting the bolt and the sleeve seat;
and a handle for pulling the bolt to be separated from the lock hole is fixed at the outer end of the bolt.
After adopting the structure, compared with the prior art, the invention has the following advantages: the pipe network of different diameters is carried out the centre gripping through the centre gripping subassembly adjustment position that the adjustment subassembly drove both sides and is fixed, with the help of the rigidity of elasticity locking structure with the adjustment subassembly, the double-end cylinder action of lower part and then the centre gripping subassembly that drives both sides draws close the butt joint each other with two pipe networks of butt joint each other, seal fixed connection with two pipe networks after having docked, then reverse adjustment centre gripping subassembly loosens two pipe networks, through the breach that the connecting pipe rear portion runs through with whole device with connect two fixed pipe networks on the separation, accomplish connection work.
Drawings
Fig. 1 is a schematic view showing the construction of a telescopic connection device for piping connection of an underground piping system.
Fig. 2 is a left side view of a retractable connector device for plumbing in an underground piping system.
Figure 3 is a left side view of a sliding sleeve and an applicator wheel in a retractable connector for underground piping system plumbing.
Figure 4 is a schematic view of the construction of the slugs and caulking grooves of the telescopic connection device for the pipe connection of an underground piping system.
Fig. 5 is an enlarged view at a in the retractable connecting device for underground piping system piping connection.
In the figure: 1-connecting pipe; 2-fixing the rod; 3, sliding sleeve; 4-swing arm; 5-a connecting shaft; 6-a clamping block; 7-a convex disc; 8-rotating wheel; 9-groove penetration; 10-limiting protrusions; 11-an outer toothed ring; 12-a gear; 13-a double-ended cylinder; 14-a piston rod; 15-telescopic shaft; 16-a sleeve shaft; 17-a regulating wheel; 18-a hollowed-out portion; 19-an arc-shaped groove; 20-a yielding groove; 21-a fixed pin; 22-a laminating wheel; 23-fillet; 24-caulking grooves; 25-a bolt; 26-a socket; 27-a pressure spring; 28-handle.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Referring to fig. 1 to 5, in an embodiment of the present invention, a retractable connecting device for connecting pipelines of an underground pipe network system includes a connecting pipe 1, where the connecting pipe 1 is in an incomplete tubular shape, a through notch is formed at a rear portion of the connecting pipe, clamping assemblies for fixing two pipes to be connected are respectively disposed at two sides of the connecting pipe 1, an adjusting assembly for adjusting a clamping angle of the clamping assemblies is disposed on the clamping assemblies, and an elastic locking structure for fixing stations of the adjusting assembly is disposed on the adjusting assembly;
the upper part and the lower part of the connecting pipe 1 are respectively provided with a driving structure for driving two groups of clamping components to mutually approach or separate, the driving structure is connected with the clamping components, and the driving structure comprises a double-head cylinder 13 fixed on the outer wall of the connecting pipe 1 and piston rods 14 which are arranged on two sides of the double-head cylinder 13 in a sliding manner and connected with the clamping components on two sides;
the pipe network of different diameters is carried out the centre gripping through the centre gripping subassembly adjustment position that the adjustment subassembly drove both sides and is fixed, with the help of the rigidity of elasticity locking structure with the adjustment subassembly, double-end cylinder 13 action through lower part in the drive and then the centre gripping subassembly that drives both sides draws close the butt joint each other with two pipe networks of butt joint each other, seal fixed connection with two pipe networks after the butt joint, then reverse adjustment centre gripping subassembly loosens two pipe networks, through the breach that runs through behind connecting pipe 1 with whole device with connect two fixed pipe networks on the separation, accomplish connection work.
In one embodiment of the present invention, the clamping assembly comprises two sets of clamping structures, and the clamping structures comprise a fixed rod 2 fixed on the outer wall of the connecting pipe 1, a sliding sleeve 3 slidably arranged on the fixed rod 2, and swing arms 4 symmetrically arranged on two sides of the sliding sleeve 3;
the end parts of two swing arms 4 symmetrically arranged on two sides are mutually rotationally connected through a connecting shaft 5, fixed pins 21 are fixed on the outer walls of two sides of the sliding sleeve 3, the swing arms 4 are provided with abdicating grooves 20 which are in sliding embedding with the fixed pins 21, and clamping blocks 6 are fixed on the ends of the swing arms 4 positioned in the connecting pipe 1;
thereby through driving the swing arm 4 that connecting axle 5 actions drive bilateral symmetry set up slide along the groove of stepping down 20 under the effect of fixed pin 21 to change the angle between two grip blocks 6 of symmetry, can carry out the centre gripping to the pipe network of different diameters.
In another embodiment of the present invention, the connecting pipe 1 is provided with a through groove 9 for the swing arms 4 at two sides to pass through, one side of the sliding sleeve 3 close to the outer wall of the connecting pipe 1 is rotatably provided with a fitting wheel 22 which is in rolling fit with the outer wall of the connecting pipe 1, and the piston rod 14 is fixedly connected with the sliding sleeve 3;
prevent that sliding sleeve 3 from taking place to rotate relative to connecting pipe 1 through laminating wheel 22, drive two swing arm 4 horizontal migration of symmetry when double-end cylinder 13 drives piston rod 14 flexible, and then drive grip block 6 and follow the removal to realize the mutual coaxial butt joint of end of two pipe networks.
In a further embodiment of the present invention, the adjusting assembly comprises a convex disc 7 rotatably sleeved on the outer wall of the connecting pipe 1, an outer toothed ring 11 fixed on the convex disc 7, and a gear 12 rotatably arranged on the outer wall of the connecting pipe 1 and meshed with the outer toothed ring 11;
the gear 12 is connected with the elastic locking structure through an embedded structure, a rotating wheel 8 which is in rolling contact with the surface of the convex disc 7 is rotatably arranged on the connecting shaft 5, two circles of limiting bulges 10 used for keeping the sliding sleeve 3 and the convex disc 7 in the same horizontal position are arranged on the sliding sleeve 3, and an arc-shaped groove 19 for the sliding sleeve 3 to pass through is formed in the convex disc 7;
the gear 12 rotates to drive the outer gear ring 11 to rotate, so that the convex disc 7 is driven to rotate along with the convex disc 7, the convex disc 7 drives the rotating wheel 8 to move when rotating, and therefore the position of the connecting shaft 5 is adjusted, the two symmetrical swing arms 4 are driven to clamp or release, and clamping or releasing of a pipe network is achieved.
In another embodiment of the present invention, the engaging structure comprises a sleeve shaft 16 rotatably disposed on the outer wall of the connection pipe 1 and a telescopic shaft 15 slidably engaged with the sleeve shaft 16;
a long strip shaped insertion strip 23 is arranged on the outer wall of the telescopic shaft 15, a caulking groove 24 matched with the insertion strip 23 is arranged on the inner wall of the sleeve shaft 16, and the gear 12 is fixed on the telescopic shaft 15;
the fitting of the fillet 23 and the caulking groove 24 can drive the telescopic shaft 15 to rotate when the sleeve shaft 16 rotates, and can allow the telescopic shaft 15 to drive the gear 12 to slide along the axial direction of the sleeve shaft 16.
In another embodiment of the present invention, the elastic locking structure includes an adjusting wheel 17 fixed at an end of the sleeve shaft 16, an elastic insertion assembly mounted on an outer wall of the connecting tube 1, and a locking hole opened on the adjusting wheel 17 along a circumferential direction for cooperating with the elastic insertion assembly;
a hollow part 18 for fixedly butting a pipe network is arranged in the middle of the connecting pipe 1;
pulling elasticity cartridge group, it drives sleeve shaft 16 and rotates to rotate regulating wheel 17, when adjusting grip block 6 and press from both sides tight back elasticity cartridge group with the pipe network outer wall and make regulating wheel 17 locked nonrotatably, it is fixed to keep the pipe network to be held, the pipe network that drives both ends by double-end cylinder 13 again draws close each other, it is fixed with the pipe network butt joint to pass fretwork portion 18 after drawing close the butt joint, pulling elasticity cartridge group makes the reversal of regulating wheel 17 loose grip block 6 and pipe network, thereby separate whole device from the pipe network.
In another embodiment of the present invention, the elastic insertion assembly comprises a sleeve seat 26 fixed on the outer wall of the connection pipe 1, a latch 25 slidably connected with the sleeve seat 26, and a compression spring 27 elastically connecting the latch 25 with the sleeve seat 26;
a handle 28 for pulling the bolt 25 to be separated from the lock hole is fixed at the outer end of the bolt 25;
the compression spring 27 is kept in a compressed state, so that the compression spring 27 enables the bolt 25 to be always matched with the lock hole under the action of no external force, and the adjusting wheel 17 is fixed.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. But all changes which come within the scope of the invention are intended to be embraced therein.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Claims (7)
1. A telescopic connecting device for pipeline connection of an underground pipe network system comprises a connecting pipe (1), wherein the connecting pipe (1) is in an incomplete tubular shape, and a through notch is formed in the rear part of the connecting pipe, and the telescopic connecting device is characterized in that clamping components for fixing two pipes to be connected are respectively arranged on two sides of the connecting pipe (1), an adjusting component for adjusting the clamping angle of the clamping components is arranged on each clamping component, and an elastic locking structure for fixing the stations of the adjusting components is arranged on each adjusting component;
the upper and lower sides of the connecting pipe (1) are respectively provided with a driving structure for driving two groups of clamping assemblies to mutually draw close or separate, the driving structure is connected with the clamping assemblies, and the driving structure comprises a double-head cylinder (13) fixed on the outer wall of the connecting pipe (1) and piston rods (14) arranged on two sides of the double-head cylinder (13) in a sliding manner and connected with the clamping assemblies on two sides.
2. The retractable connection device for the pipe connection of the underground pipe network system according to claim 1, wherein the clamping assembly comprises two groups of clamping structures, the clamping structures comprise a fixed rod (2) fixed on the outer wall of the connecting pipe (1), a sliding sleeve (3) slidably arranged on the fixed rod (2), and swing arms (4) symmetrically arranged at two sides of the sliding sleeve (3);
wherein, connect through connecting axle (5) rotation each other between two swing arm (4) tip that bilateral symmetry set up be fixed with fixed pin (21) on sliding sleeve (3) both sides outer wall, set up on swing arm (4) with groove (20) of stepping down of fixed pin (21) slip gomphosis, swing arm (4) are located and are fixed with grip block (6) on the end in connecting pipe (1).
3. The retractable connection device for pipeline connection of underground pipe network system according to claim 2, wherein the connection pipe (1) is provided with a through slot (9) for the swing arms (4) at two sides to pass through, one side of the sliding sleeve (3) close to the outer wall of the connection pipe (1) is rotatably provided with a fitting wheel (22) which is in rolling fit with the outer wall of the connection pipe (1), and the piston rod (14) is fixedly connected with the sliding sleeve (3).
4. A retractable connection device for underground piping system pipe connection according to claim 2, wherein the adjustment assembly comprises a convex disc (7) rotatably fitted over the outer wall of the connection pipe (1), an outer toothed ring (11) fixed to the convex disc (7), and a gear (12) rotatably provided on the outer wall of the connection pipe (1) and engaged with the outer toothed ring (11);
the gear (12) is connected with the elastic locking structure through an embedded structure, a rotating wheel (8) which is in rolling contact with the surface of the convex disc (7) is rotatably arranged on the connecting shaft (5), two circles of limiting protrusions (10) which are used for keeping the sliding sleeve (3) consistent with the horizontal position of the convex disc (7) are arranged on the sliding sleeve (3), and an arc-shaped groove (19) for the sliding sleeve (3) to pass is formed in the convex disc (7).
5. A retractable connecting device for connecting pipes of underground pipe network systems according to claim 4, wherein the engaging structure comprises a sleeve shaft (16) rotatably disposed on the outer wall of the connecting pipe (1) and a retractable shaft (15) slidably engaged with the sleeve shaft (16);
the outer wall of the telescopic shaft (15) is provided with a long strip-shaped insertion strip (23), the inner wall of the sleeve shaft (16) is provided with an insertion groove (24) matched with the insertion strip (23), and the gear (12) is fixed on the telescopic shaft (15).
6. The retractable connection device for pipeline connection of underground pipe network system according to claim 5, wherein the elastic locking structure comprises an adjusting wheel (17) fixed at the end of the sleeve shaft (16), an elastic insertion set mounted on the outer wall of the connection pipe (1), and a locking hole opened on the adjusting wheel (17) along the circumferential direction for cooperating with the elastic insertion set;
and a hollow part (18) for fixedly butting the pipe network is arranged in the middle of the connecting pipe (1).
7. A retractable connection device for a pipe connection of an underground piping system according to claim 6, wherein the elastic insertion set comprises a socket (26) fixed on the outer wall of the connection pipe (1), a plug (25) slidably connected with the socket (26), and a compression spring (27) elastically connecting the plug (25) with the socket (26);
and a handle (28) for pulling the bolt (25) to be separated from the lock hole is fixed at the outer end of the bolt (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010873693.0A CN112082022B (en) | 2020-08-26 | 2020-08-26 | Telescopic connecting device for pipeline connection of underground pipe network system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010873693.0A CN112082022B (en) | 2020-08-26 | 2020-08-26 | Telescopic connecting device for pipeline connection of underground pipe network system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112082022A true CN112082022A (en) | 2020-12-15 |
| CN112082022B CN112082022B (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010873693.0A Active CN112082022B (en) | 2020-08-26 | 2020-08-26 | Telescopic connecting device for pipeline connection of underground pipe network system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112082022B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406857A (en) * | 2013-08-27 | 2013-11-27 | 贺连文 | Pipeline connector |
| US20150174706A1 (en) * | 2013-12-19 | 2015-06-25 | Mathew W. McClure | Apparatus for aligning sections of pipe |
| US20150337986A1 (en) * | 2014-05-20 | 2015-11-26 | Benoit Bouchard | Pipe joining device |
| US20160318244A1 (en) * | 2013-12-18 | 2016-11-03 | Isco Industries, Inc. | Assembly and Method of Coupling Pipes |
| CN109399187A (en) * | 2018-10-15 | 2019-03-01 | 山东陆宇塑胶工业有限公司 | Portable tubular product centre gripping distributor |
| CN209394243U (en) * | 2018-11-22 | 2019-09-17 | 广州市富鑫机械设备有限公司 | A kind of pipeline welding fixture |
| CN110274091A (en) * | 2019-06-04 | 2019-09-24 | 南通赛威染整科技有限公司 | Petroleum transportation pipeline connects support device |
| CN111059355A (en) * | 2020-03-18 | 2020-04-24 | 胜利油田新大管业科技发展有限责任公司 | Combined chain plate type pulling and clamping tool |
| CN111550603A (en) * | 2020-04-30 | 2020-08-18 | 朱庆辉 | Sewage pipe butt joint device |
-
2020
- 2020-08-26 CN CN202010873693.0A patent/CN112082022B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406857A (en) * | 2013-08-27 | 2013-11-27 | 贺连文 | Pipeline connector |
| US20160318244A1 (en) * | 2013-12-18 | 2016-11-03 | Isco Industries, Inc. | Assembly and Method of Coupling Pipes |
| US20150174706A1 (en) * | 2013-12-19 | 2015-06-25 | Mathew W. McClure | Apparatus for aligning sections of pipe |
| US20150337986A1 (en) * | 2014-05-20 | 2015-11-26 | Benoit Bouchard | Pipe joining device |
| CN109399187A (en) * | 2018-10-15 | 2019-03-01 | 山东陆宇塑胶工业有限公司 | Portable tubular product centre gripping distributor |
| CN209394243U (en) * | 2018-11-22 | 2019-09-17 | 广州市富鑫机械设备有限公司 | A kind of pipeline welding fixture |
| CN110274091A (en) * | 2019-06-04 | 2019-09-24 | 南通赛威染整科技有限公司 | Petroleum transportation pipeline connects support device |
| CN111059355A (en) * | 2020-03-18 | 2020-04-24 | 胜利油田新大管业科技发展有限责任公司 | Combined chain plate type pulling and clamping tool |
| CN111550603A (en) * | 2020-04-30 | 2020-08-18 | 朱庆辉 | Sewage pipe butt joint device |
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| Publication number | Publication date |
|---|---|
| CN112082022B (en) | 2021-12-28 |
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Effective date of registration: 20211209 Address after: 257092 room 533, building B, No. 59, Fuqian street, development zone, Dongying City, Shandong Province Applicant after: Donghui new energy Co.,Ltd. of Dongying Economic and Technological Development Zone Address before: Room 302, third floor, shuangchuang building, no.661 Taolin Road, Changde economic and Technological Development Zone, Hunan Province Applicant before: Changde Junde Technology Development Co.,Ltd. |
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