CN204868098U - Take spiral steel pipe automated production equipment of spiral beaded finish - Google Patents
Take spiral steel pipe automated production equipment of spiral beaded finish Download PDFInfo
- Publication number
- CN204868098U CN204868098U CN201420539486.1U CN201420539486U CN204868098U CN 204868098 U CN204868098 U CN 204868098U CN 201420539486 U CN201420539486 U CN 201420539486U CN 204868098 U CN204868098 U CN 204868098U
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- spiral
- reinforcing ring
- steel band
- production equipment
- 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.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses a take spiral steel pipe automated production equipment of spiral beaded finish, be used for setting up the first pay -off bracket of putting the revolving rack, being used for carrying main steel band of main steel band, first pinch roll device, flattening roller device and cant beam including what connect gradually, it puts revolving rack, second pinch roll device and is used for making narrow steel band bending deformation to become the forming device of beaded finish still to connect gradually the second that is used for setting up narrow steel band in top or below that the cant beam is located main steel band place plan position at the back to forming device sends the beaded finish into main steel band department through guider, and this main steel band loops through clamping device, spiral steel pipe forming device, welding set and cutting device jointly with the beaded finish and forms the spiral steel pipe who takes the spiral beaded finish. The utility model discloses an advantage is producing the diameter super large to helical shape beaded finish and the shaping of steel pipe wall simultaneous processing, the pipe wall is thin, hoop rigidity increases, have the spiral steel pipe of guard action to the seam of adjacent tube coupling.
Description
Technical field
The utility model relates to a kind of production equipment of steel pipe, particularly relates to a kind of spiral steel pipe automated production equipment with spirality reinforcing ring.
Background technology
There are the pipelines such as reinforced concrete pipiline, plastic conduit and steel pipe at present, but the diameter of above-mentioned pipeline all can not be too large, such as, just be difficult to when reinforced concrete pipiline diameter is more than 2 meters make, length can not be oversize, and body is heavy, constructional difficulties, easy leakage, pressure medium can not be too large, cannot be used as pressure pipeline and use; The elastic modelling quantity of plastic conduit is little, and when doing large diameter pipeline use, hoop rigidity can not meet the demands, and can not be used as pressure pipeline; Steel pipe, when bore is too large, in order to meet the most basic anti-collapse intensity, namely during hoop rigidity, just must increase steel plate thickness, cost is very high, and bore can not be too large, when diameter is more than 3 meters, under weight, during production, pipeline just may be out of shape, and not easily processes.When pipeline is buried, ultra-large-diameterpipeline pipeline is difficult to the pressure resisting both sides backfill generation.Current GB is not also produced the fully automatic integral special equipment of the spiral steel pipe with spirality reinforcing ring.
Utility model content
Utility model object: the purpose of this utility model is to provide the automated production equipment that a kind of diameter super large, tube wall are thin, hoop rigidity increases, has the seam of adjacent tube coupling the spiral steel pipe of the band spirality reinforcing ring of protective effect.
Technical scheme: automated production equipment described in the utility model, is characterized in that: comprise connect successively first put pivoted frame, for carrying the material-feeding bracket of main steel band, the first pinch roll apparatus, leveling roller arrangement and cant beam for what arrange main steel band; Be positioned at also to connect successively above or below plan-position, main steel band place after cant beam and second put pivoted frame, the second pinch roll apparatus and the shaped device for making narrow steel strip flexural deformation become reinforcing ring for what arrange narrow steel strip, and reinforcing ring is sent into main steel band place by guider by shaped device, this main steel band and shaping after narrow steel strip and reinforcing ring jointly form the spiral steel pipe being with spirality reinforcing ring by clamping device, spiral steel pipe shaped device, welder and cutter sweep successively.
Wherein, described spiral steel pipe shaped device comprises platform and is positioned at the column of this platform side, the crossbeam be connected with column is provided with above this platform, wherein, this platform is provided with the format roll for making main steel band bend, be deformed into spiral steel pipe, and this crossbeam is provided with the roller for auxiliary sizing, adjustable screw diameter of steel tube size simultaneously.Described format roll and roller are at least three.
Described welder comprises three-dimensional slide unit and connected Welding head mechanism.
Described cutter sweep comprises the two-way tachogenerator, DC servo motor, gear reduction unit, double lead-screw nut body and the moveable Cutting dolly that driven by double lead-screw nut body that connect successively, wherein, this Cutting dolly is provided with successively the milling cutter for excising spirality reinforcing ring and the plasma cut spray gun for cutting main steel band.
Described leveling roller arrangement adopts seven roller levelings, and point two rows are arranged, and upper row is provided with four top rolls be elevated by Electric Machine Control, and lower row fixes three lower rolls; Be provided with the sensor for detecting main steel band position signalling in the exit of this leveling roller arrangement simultaneously.
Described first put pivoted frame comprise can oscilaltion entrainment conehead and be positioned at carrying roller below entrainment conehead.
Described first pinch roll apparatus comprises top roll and lower roll.
Described clamping device comprises upper roll wheel and is positioned at the narrow steel strip supporting plate below this upper roll wheel.
Beneficial effect: the utility model compared with prior art, its advantage is: first, this equipment to spiral reinforcing ring and steel pipe walls machine-shaping simultaneously, can produce the inwall of super-large diameter (diameter can reach more than 10 meters or 10 meters) or the spiral steel pipe of outer wall belt spirality reinforcing ring; Secondly, this equipment can conveniently regulate and the diameter of fixing steel pipe, and the height of reinforcing ring, width and spacing, forces sizing, produce the spiral welded steel pipe meeting dimensions, in order to avoid there is the first-class phenomenon of size to the steel pipe of first one-step forming; Again, adopt automatically inside and outside solder technology, make torch motion track before and after soldering tip consistent with helix, inside is welded the weld seam of steel pipe self formation, and outside utilizes reinforcing ring to be welded on seam crossing on main steel band, improves welding quality; Meanwhile, the weld seam between spiral steel pipe tube coupling wraps up by spirality reinforcing ring, and form a closed cavity, not only strengthen the leak protection of commissure, also easy butt welded seam carries out pressure testing and leak detection; In addition, cutter sweep can guarantee dolly and the steel tube elongation speed sync of cutting, ensure the smooth of cutting edge, when pipe cutting, steel pipe some be have inside and outside two-layer (steel pipe that spirality reinforcing ring and main steel band are made), milling cutter cut-out spirality reinforcing ring can be utilized, be convenient to the cutting of the steel pipe be made up of main steel band.
Accompanying drawing explanation
Fig. 1 is the top view of the utility model equipment;
Fig. 2 is the first structural representation putting pivoted frame in the utility model;
Fig. 3 a is the front view of the first pinch roll apparatus in the utility model;
Fig. 3 b is the left view of the first pinch roll apparatus in the utility model;
Fig. 4 is the structural representation of leveling roller arrangement in the utility model;
Fig. 5 a be in the utility model second put pivoted frame and the second pinch roll dress side view;
Fig. 5 b is the top view of the second pinch roll in the utility model;
Fig. 6 is the structural representation for the shaped device that makes narrow steel strip bend in the utility model;
Fig. 7 is the structural representation of guider in the utility model;
Fig. 8 is the 3 dimensional drawing of guider in the utility model;
Fig. 9 a is the front view of clamping device in the utility model;
Fig. 9 b is the top view of clamping device in the utility model;
Figure 10 is the side view of shaped device in the utility model;
Figure 11 is the front view of shaped device in the utility model;
Figure 12 is the structural representation of the three-dimensional slide unit in the utility model in welder;
Figure 13 is the structural representation of the Welding head mechanism in the utility model in welder;
Figure 14 is the structural representation of cutter sweep in the utility model;
Figure 15 is the structural representation of the Cutting dolly in the utility model in cutter sweep;
Figure 16 is the structural representation of narrow steel strip putting position;
Figure 17 be the utility model narrow steel strip section flexure shaping after structural representation;
Figure 18 be the main steel band of the utility model and shaping after narrow steel strip fit after structural representation;
Figure 19 be the main steel band of the utility model and shaping after narrow steel strip by the structural representation after spiral steel pipe shaped device;
Figure 20 is the 3 dimensional drawing of the spiral steel pipe of the band spirality reinforcing ring utilizing the utility model equipment making to go out;
Figure 21 be main steel band and shaping after narrow steel strip when entering spiral steel pipe shaped device, the schematic diagram of photoelectric code disk position.
Detailed description of the invention:
Below the technical solution of the utility model is described further.
As shown in Figure 1, automated production equipment of the present utility model, comprise connect successively first put pivoted frame 1, for carrying material-feeding bracket 2, first pinch roll apparatus 3 of main steel band 14, leveling roller arrangement 4 and cant beam 5 for what arrange main steel band; This cant beam 5 be positioned at below also connect successively above or below the plane of main steel band 14 place second put pivoted frame 6, second pinch roll apparatus 7 and for making the shaped device 8 that narrow steel strip is bending for what arrange narrow steel strip 15, and the narrow steel strip 15 (i.e. reinforcing ring 16) after shaping is sent into main steel band 14 place by guider 9 by shaped device 8, and this main steel band 14 forms with common clamping device 10, spiral steel pipe shaped device 11, welder 12 and the cutter sweep 13 that pass through successively of reinforcing ring 16 spiral steel pipe being with spirality reinforcing ring.The automated production of the spiral steel pipe of outer wall or inner wall belt spirality reinforcing ring so can be realized by this equipment.Reinforcing ring of the present utility model is hollow reinforcing ring, certainly as required can fill concrete wherein.
As shown in Figure 2, the coil of strip of main steel band is placed in first and puts on pivoted frame 1, by material-feeding bracket 2, main steel band is delivered to the first pinch roll apparatus 3 place.This first is put pivoted frame 1 and comprises entrainment conehead 103 and carrying roller 104, for supporting the coil of strip of main steel band.Wherein, the lifting of entrainment conehead 103 is driven by hydraulic jack, with check valve self-locking circuit, can not produce dropping of coil of strip when ensureing work.The rotation of carrying roller 104 is by profile of tooth chain drive by motor; Entrainment conehead 103, also with brake, can prevent because during scram, conehead reversing produces loose volume, simultaneously also can according to different coil of strips adjustment brake force.
As shown in Fig. 3 a, 3b, the first pinch roll apparatus 3 comprises top roll 31 and lower roll 32.This pinch roll is the main power source of the utility model, and main steel band, by hydraulic jack drived control knee-action, by the acting in conjunction of top roll 31 and lower roll 32, is delivered to leveling roller arrangement 4 by top roll 31.
As shown in Figure 4, leveling roller arrangement 4, comprise top roll 41 and lower roll 42 forms, upper row four top rolls 41, lower row three lower rolls 42, lower roll 42 is fixed, top roll 41 controls lifting by electric motor, and the swingable fine setting of top roll, realizes the opening degree of top roll, ensure that leveling effect, improve the flatness of steel surface.When the sensor 43 being arranged on leveling roller arrangement exit detects main steel band signal, be positioned on the upside of main steel band or second the putting pivoted frame 6 and start working of downside.
When needing the spiral steel pipe making outer wall belt reinforcing ring (the utility model is as example), second puts pivoted frame 6, second pinch roll apparatus 7 and shaped device 8 is positioned at the below (now main steel band has transferred to cant beam 5 position) of plan-position, main steel band place (when the sensor on leveling roller detects main steel band signal, second puts pivoted frame starts action, ensures that the end face of narrow steel strip is concordant with the end face of main steel band); When needing the spiral steel pipe making inner wall belt reinforcing ring, second puts the top that pivoted frame 6, second pinch roll apparatus 7 and shaped device 8 are positioned at plan-position, main steel band place.
As shown in Fig. 5 a, 5b, second put pivoted frame 6 can with the second pinch roll apparatus 7 not at grade, facilitate installation and the docking of narrow steel strip, utilize axle sleeve 71 to fix narrow steel strip 15 between centers position.
As shown in Figure 6, shaped device of the present utility model 8 extrudes by parallel three groups of running rollers (comprising upper roll wheel and bottom roller) narrow steel strip that three volumes export simultaneously, thus to make three groups of cross sections be semicircle arcuation (the utility model), the reinforcing ring such as square or trapezoidal.The width of the reinforcing ring that narrow steel strip is shaping, highly, spacing etc. all regulates by up-down rollers wheel.
As shown in figs. 16-20, first, narrow steel strip 15 bends to through shaped device 8 circulus (the utility model is called reinforcing ring 16) that cross section is semicircle arcuation, secondly, reinforcing ring 16 welds with main steel band 14 and fits together, reinforcing ring 16 specifically after main steel band 14 surface longitudinal fits 3 composing types, wherein, the one group of reinforcing ring bent being positioned at main steel band edge place has one end to be fitted on main steel band 14, the other end is unsettled, when main steel band one save turn to spiral steel pipe 17 time, a upper joint steel pipe and next save between steel pipe (or being between main steel band) and form spirality seam 18, next saves one end of reinforcing ring unsettled on main steel band and then fits (covering) on the spiral tube coupling that a upper joint is shaping, finally make the spiral steel pipe of band spirality reinforcing ring.
As shown in Figure 7,8, the narrow steel strip after shaping, by inclination certain angle, is delivered to the below of main steel band position, and is fitted with main steel band by guider 9.Processing process in, ensure shaping after narrow steel strip concordant with the end face of main steel band.
As shown in Fig. 9 a, 9b, narrow steel strip after shaping and main steel band are fitted (as shown in figure 17) by clamping device 10 completely, it narrow steel strip supporting plate 102 comprising upper roll wheel 101 and be positioned at below it, narrow steel strip is placed on narrow steel strip supporting plate 102, and the space between upper roll wheel 101 and narrow steel strip supporting plate 102 is for placing main steel band.In welding process, the a-quadrant between two upper roll wheels 101, uses welder 12 to weld.
As shown in Figure 10,11, main steel band surface being covered with shaping rear narrow steel strip sends into spiral steel pipe shaped device 11, this spiral steel pipe shaped device 11 comprises platform 112 and is positioned at the column 113 of this platform 112 side, the crossbeam 114 be connected with column 113 is provided with above this platform 112, wherein, this platform 112 is provided with for making main steel band bend, being deformed into the format roll 110 of spiral steel pipe, and this format roll 110 has three (1 at least
#, 2
#, 3
#), this crossbeam 114 is provided with the roller 111 for auxiliary sizing, adjustable screw diameter of steel tube size simultaneously, and this roller 111 is also have three (4 at least
#, 5
#, 6
#).Distance between format roll 110 is determined according to spiral steel pipe diameter; Roller 111 is for auxiliary sizing.
This spiral steel pipe shaped device 11, adopts three exclusive control roller sizing modes (i.e. 4#, 5#, 6#, 111 in Figure 11), three format rolls (1
#, 2
#, 3
#)) adopt Electronic control mode, by main steel band and narrow steel strip bend fixing, the large free degree adjustable of format roll, can realize lifting, translation, angle also adjustable, produces the spiral steel pipe (as shown in figure 19) of outer wall belt spirality reinforcing ring.In addition, 4 of sizing is assisted
#, 5
#, 6
#three rollers also all adopt Electronic control, conveniently regulate diameter of steel tube, force sizing, produce the spiral welded steel pipe meeting dimensions, reduce hand labor intensity to the steel pipe of first one-step forming; In addition, by regulating 5
#the angle of inclination of roller (from Figure 10 analysis, regulates 5
#roller upper-lower position), such as make tower-like spiral steel pipe.Meanwhile, near this spiral steel pipe shaped device 11 or device is provided with photoelectric code disk 114, as shown in figure 21.
While spiral steel pipe is shaping, carries out interior external welding, therefore inside and outside steel pipe, be equipped with welder to steel pipe, interior welds is for welding the seam between spiral steel pipe tube coupling; And outside weldings to be the one end next being saved narrow steel strip unsettled on main steel band be welded on the shaping spiral tube coupling of a upper joint (as mentioned above), welder suspension is herein fixed on the side of format roll 2#.
Described welder 12 as shown in Figure 12,13, is made up of three-dimensional slide unit 120 (as Figure 12) and Welding head mechanism 121 (as Figure 13) two parts.Three-dimensional slide unit can carry out the adjustment in 3 directions to welding torch, be respectively horizontal level diameter of steel tube direction (X-axis, diagram vertical and drawing direction), steel shaft to parallel direction (Y-axis) and upright position steel pipe radial direction (Z axis), Z axis slide plate 122 is soldering tip suspension connection mechanism.Three-dimensional slide unit 120 primary drive parts adopt ball screw assembly, and line slideway auxiliary, and positioning precision is high; Z axis has power-off brake function, during energising band-type brake unclamp, power-off time band-type brake automatic locking, avoid adjusting complete power failure and automatically glide afterwards.Welding head mechanism 121 is connected with the Z axis slide plate 122 of three-dimensional slide unit by a terminal pad 123, terminal pad 123 can drive Welding head mechanism to rotate adjustment according to the direction of steel pipe helix, make torch motion track before and after soldering tip consistent with helix, 124 is mariages spacing adjusting mechanism, for adjusting the distance between soldering tip 126,125 is wire feeding motor.
As shown in Figure 14,15,21, the Cutting dolly 136 with plasma cut spray gun 134 and milling cutter 135 that cutter sweep 13 comprises tachogenerator 130, DC servo motor 131, gear reduction unit (not shown in FIG.), double lead-screw nut body drive.Before entering three-roll formation mechanism (spiral steel pipe shaping mechanism), steel plate pace is measured with photoelectric code disk 114, the tachogenerator 130 on another road is directly installed on DC servo motor 131 output shaft end, measure the actual motion speed of Cutting dolly 136, the walking FEEDBACK CONTROL of Cutting dolly 136 can be realized etc. by photoelectric code disk 114 and tachogenerator 130, guarantees that Cutting dolly 136 is synchronous with steel tube elongation.Cutting dolly 136 is as shown in Figure 14,15.DC servo motor 131 drives double lead-screw 132 to rotate by gear reduction unit, the screw-nut body that combined by double lead-screw 132 and nut 133 drives Cutting dolly 136 with plasma gun 134 and milling cutter 135 to advance with speed with steel pipe, milling cutter 136 under, plasma gun 134 is upper, milling cutter 135 and plasma gun 134 action simultaneously, due to milling cutter 135 under, regulate certain depth of cut, can the hollow reinforcing ring of cut-out, be convenient to plasma cut spray gun 134 and cut the spiral steel pipe rolled by main steel band, spray gun and milling cutter are equipped with sensor, guarantee that spiral steel pipe distance that spray gun and main steel band roll is consistent and the amount of entering of milling cutter and hollow reinforcing ring is consistent.
Claims (8)
1. the spiral steel pipe automated production equipment with spirality reinforcing ring, is characterized in that: comprise connect successively first put pivoted frame (1), for carrying the material-feeding bracket (2) of main steel band, the first pinch roll apparatus (3), leveling roller arrangement (4) and cant beam (5) for what arrange main steel band (14), be positioned at below also to connect successively above or below plan-position, main steel band place at cant beam (5) and second put pivoted frame (6) for what arrange narrow steel strip (15), second pinch roll apparatus (7) and the shaped device (8) for making narrow steel strip (15) flexural deformation become reinforcing ring (16), and reinforcing ring (16) is sent into main steel band (14) place by guider (9) by shaped device (8), this main steel band (14) is common successively by clamping device (10) with reinforcing ring (16), spiral steel pipe shaped device (11), welder (12) and cutter sweep (13) form the spiral steel pipe of band spirality reinforcing ring.
2. be with the spiral steel pipe automated production equipment of spirality reinforcing ring according to claim 1, it is characterized in that: described spiral steel pipe shaped device (11) comprises platform (112) and is positioned at the column (113) of this platform (112) side, this platform (112) top is provided with the crossbeam (114) be connected with column (113), wherein, this platform (112) is provided with for making main steel band bend, be deformed into the format roll (110) of spiral steel pipe, this crossbeam (114) is provided with for auxiliary sizing simultaneously, the roller (111) of adjustable screw diameter of steel tube size.
3. be with the spiral steel pipe automated production equipment of spirality reinforcing ring according to claim 2, it is characterized in that: described format roll (110) and roller (111) are at least three.
4. the spiral steel pipe automated production equipment with spirality reinforcing ring according to claim 1,2 or 3, it is characterized in that: described cutter sweep (13) comprises the tachogenerator (130), DC servo motor (131), gear reduction unit, double lead-screw nut body and the moveable Cutting dolly (136) that driven by double lead-screw nut body that connect successively, wherein, this Cutting dolly (136) is provided with successively the milling cutter (135) for excising spirality reinforcing ring and the plasma cut spray gun (134) for cutting main steel band.
5. the spiral steel pipe automated production equipment with spirality reinforcing ring according to claim 1,2 or 3, it is characterized in that: described leveling roller arrangement (4) adopts seven roller levelings, two rows are divided to arrange, upper row is provided with four top rolls be elevated by Electric Machine Control (41), and lower row fixes three lower rolls (42); Be provided with the sensor (43) for detecting main steel band position signalling in the exit of this leveling roller arrangement (4) simultaneously.
6. the spiral steel pipe automated production equipment with spirality reinforcing ring according to claim 1,2 or 3, is characterized in that: described first put pivoted frame (1) comprise can oscilaltion entrainment conehead (103) and be positioned at entrainment conehead (103) below carrying roller (104).
7. the spiral steel pipe automated production equipment with spirality reinforcing ring according to claim 1,2 or 3, is characterized in that: described first pinch roll apparatus (3) comprises top roll (31) and lower roll (32).
8. the spiral steel pipe automated production equipment with spirality reinforcing ring according to claim 1,2 or 3, is characterized in that: described clamping device (10) comprises upper roll wheel (101) and is positioned at the narrow steel strip supporting plate (102) of this upper roll wheel (101) below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539486.1U CN204868098U (en) | 2014-09-18 | 2014-09-18 | Take spiral steel pipe automated production equipment of spiral beaded finish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539486.1U CN204868098U (en) | 2014-09-18 | 2014-09-18 | Take spiral steel pipe automated production equipment of spiral beaded finish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204868098U true CN204868098U (en) | 2015-12-16 |
Family
ID=54812522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420539486.1U Withdrawn - After Issue CN204868098U (en) | 2014-09-18 | 2014-09-18 | Take spiral steel pipe automated production equipment of spiral beaded finish |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204868098U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384935A (en) * | 2014-09-18 | 2015-03-04 | 南京联众建设工程技术有限公司 | Automatic production equipment of spiral steel pipe with spiral reinforcing ring |
| CN106734693A (en) * | 2016-12-05 | 2017-05-31 | 西北工业大学 | A kind of feed mechanism for space pipe fitting bending building mortion |
| CN112719922A (en) * | 2020-12-31 | 2021-04-30 | 石伟 | Be used for processing welding to seal automatic smart machine of stirrup |
| WO2024060850A1 (en) * | 2022-09-21 | 2024-03-28 | 南京大得钢管有限公司 | Large-diameter thin-walled spiral welded pipe and manufacturing method therefor |
-
2014
- 2014-09-18 CN CN201420539486.1U patent/CN204868098U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384935A (en) * | 2014-09-18 | 2015-03-04 | 南京联众建设工程技术有限公司 | Automatic production equipment of spiral steel pipe with spiral reinforcing ring |
| CN106734693A (en) * | 2016-12-05 | 2017-05-31 | 西北工业大学 | A kind of feed mechanism for space pipe fitting bending building mortion |
| CN112719922A (en) * | 2020-12-31 | 2021-04-30 | 石伟 | Be used for processing welding to seal automatic smart machine of stirrup |
| WO2024060850A1 (en) * | 2022-09-21 | 2024-03-28 | 南京大得钢管有限公司 | Large-diameter thin-walled spiral welded pipe and manufacturing method therefor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104384935B (en) | Spiral steel pipe automated production equipment with spiral type reinforcing ring | |
| CN204868098U (en) | Take spiral steel pipe automated production equipment of spiral beaded finish | |
| CN104959767B (en) | A kind of welding equipment being applicable to petroleum pipeline inwall multi-pass welding | |
| CN106493526B (en) | A kind of heavy hyperboloid arc steel box-girder manufacture craft | |
| CN103978374B (en) | Umbilical cables steel pipe coil production line | |
| CN204771925U (en) | Automatic high accuracy welding seam inner wall sharpening machine of compound steel pipes | |
| CN106670700A (en) | Four-axis normal numerical-control welding machine | |
| CN104959773B (en) | Water heater liner welding tooling is used in a kind of spot welding location | |
| CN103316950B (en) | Spinning forming device for large-diameter thin-walled pipes and application method thereof | |
| CN101537460B (en) | Thin-walled multiply bellows straight-side port closing device | |
| CN208556447U (en) | A kind of equipment being connect for tank truck frame and shoulder protector with tank body | |
| CN220515849U (en) | Wear-resisting nozzle stub inner wall build-up welding device | |
| CN201264140Y (en) | Semicanal submerged arc automatic soldering device | |
| CN105382050B (en) | A kind of helix tube production line | |
| CN105269205B (en) | A kind of reinforced mesh welding guiding mechanism | |
| CN205200870U (en) | Equipment is welded in seamless build -up welding restoration | |
| CN104959772B (en) | A kind of water heater liner apparatus for welding and positioning | |
| CN207386877U (en) | Wire-drawing operation stainless steel water coolers automatic soldering device | |
| CN108838256A (en) | A kind of equipment for pre-buried channel flow component circular arc molding | |
| CN202726275U (en) | Heavy-calibre elbow longitudinal seam automatic welding device | |
| CN205111180U (en) | Welding equipment suitable for defeated inner wall of oil tubing multilayer multichannel welds | |
| CN115026466A (en) | Automatic welding device for steel structure shell | |
| CN108890079B (en) | Automatic seam welding machine and automatic seam welding method thereof | |
| CN210647813U (en) | Roller-replacement-free seam guide roller device of square and rectangular tube welding unit | |
| CN210647815U (en) | Spiral welded pipe unit former |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151216 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |