CN105945415A - Lacing wire seam welder traction device - Google Patents
Lacing wire seam welder traction device Download PDFInfo
- Publication number
- CN105945415A CN105945415A CN201610330617.9A CN201610330617A CN105945415A CN 105945415 A CN105945415 A CN 105945415A CN 201610330617 A CN201610330617 A CN 201610330617A CN 105945415 A CN105945415 A CN 105945415A
- Authority
- CN
- China
- Prior art keywords
- traffic cycle
- chain
- wheel
- big frame
- lacing wire
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Wire Processing (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention provides a lacing wire seam welder traction device. The lacing wire seam welder traction device comprises a clamping assembly, a transmission assembly and a moving assembly. According to the clamping assembly, through relative rotation of an outer large rotary disk and an inner large rotary disk, the space of an outer large rotary disk rib plate and an inner large rotary disk rib plate is changed, and then longitudinal bars of a steel bar framework are clamped or loosened. The transmission assembly achieves transmission through chain wheels and chains to transmit power to the inner large rotary disk, the inner large rotary disk is driven to rotate, and thus the steel bar framework is driven to rotate. According to the moving assembly, the chains are driven by the chain wheels, a large frame and the clamping assembly installed on the large frame are pulled to move together on a guide rail, and thus the steel bar framework is dragged to move longitudinally. The lacing wire seam welder traction device is simple in structure, reliable in clamping, drags the steel bar framework to move stably, and can be applied to reinforced concrete pipe steel bar framework production equipment.
Description
Technical field
The present invention relates to a kind of concrete reinforced pipe framework of steel reinforcement and produce equipment, particularly for the traction apparatus of lacing wire seam welder.
Background technology
The seam welder producing concrete reinforced pipe framework of steel reinforcement pushes away muscle and lacing wire two kinds according to the mode that framework of steel reinforcement moves forward
Form, lacing wire mode overcomes the welder hoop resistance distortion action to reinforcing bar compared to pushing away muscle mode.
The move mode that traction apparatus majority is lacing wire of current seam welder, and current traction apparatus, a kind of framework of steel reinforcement roll welding
Machine travel device (application number 201310234888.0) and the traction floral disc (application number of a kind of lacing wire seam welder
201510085737.2), major defect has 1. structures complicated, needs clamping cylinder, 2. a framework of steel reinforcement for each vertical muscle
Vertical muscle and fixing web and the clamping of swivelling web be point cantact, clamping force is little, and it is unreliable to clamp.
Summary of the invention
In view of problem present in background technology, it is an object of the invention to provide a kind of simple in construction, but can guarantee that steel bar clamping
A kind of traction apparatus of lacing wire seam welder.
To achieve these goals, the invention provides the traction apparatus of a kind of seam welder, including the clamping group for clamping lacing wire
Part, transmission component, moving assembly；Wherein:
Described clamp assembly, including outer traffic cycle and with outer traffic cycle the interior traffic cycle of relative rotary motion can do, and outward
The most uniform some outer traffic cycle gussets on traffic cycle, the most uniform some interior traffic cycle gussets of interior traffic cycle, simultaneously outside
Each piece of outer traffic cycle gusset on traffic cycle is in two pieces on interior traffic cycle between traffic cycle gusset；
Described transmission component, clutch end is connected with interior traffic cycle, and interior traffic cycle is under the power drive of transmission component,
Can rotate relative to outer traffic cycle；
Described moving assembly, including big frame and linear reciprocation travel mechanism, the power output of this linear reciprocation travel mechanism
End is connected with big frame, and big frame is then connected with clamp assembly, under the power drive of linear reciprocation travel mechanism, and big frame
Clamp assembly is driven to do straight reciprocating motion.
As a further improvement on the present invention, described outer traffic cycle is connected with interior traffic cycle by gusset distance regulating mechanism, and
Interior traffic cycle is then located by connecting with big frame by rotary shaft；Gusset distance regulating mechanism includes rotary cylinder, connection dish, connects
Dish and outer traffic cycle are fixing to be connected, the two ends of rotary cylinder respectively be connected dish, rotary shaft is fixed, rotary shaft, rotary pneumatic simultaneously
Cylinder, interior traffic cycle, outer traffic cycle are coaxially disposed.
As a further improvement on the present invention, described rotary shaft is T-shaped hollow axle, including open circles plate-like flat segments and hollow
Vertically section；The upper plane of big frame is fitted with rotary shaft mounting seat, and the hollow vertical section of rotary shaft passes through bearings in rotary shaft
Installing in pedestal, the open circles plate-like flat segments of rotary shaft is then fixing with interior traffic cycle to be connected.
As a further improvement on the present invention, the width of the outer traffic cycle main body of the width ratio of described outer traffic cycle gusset wants width, and interior
The width of traffic cycle gusset is consistent with the width of interior traffic cycle main body.
As a further improvement on the present invention, described transmission component uses sprocket chain strip transmission mechanism, including drive mechanism I,
First sprocket chain strip transmission mechanism, power transmission shaft, the second sprocket chain strip transmission mechanism, the first sprocket chain strip transmission mechanism includes sprocket wheel
I, driving chain, sprocket wheel III；Second sprocket chain strip transmission mechanism includes sprocket wheel V and drives chain, and the power of motor I is defeated
Go out end to be connected with sprocket wheel I；The clutch end of motor I passes sequentially through chain wheel I, driving chain, sprocket wheel III, power transmission shaft, chain
Wheel V is connected with driving chain, and drive mechanism I is fixedly mounted on big frame, and power transmission shaft is arranged on big frame bottom, and drives
Chain is arranged along interior traffic cycle outer ring.
As a further improvement on the present invention, described drive mechanism I includes motor I and is connected with motor I clutch end
Decelerator I.
As a further improvement on the present invention, the lower end of described big frame is placed in guide rail by wheels, reciprocating linear travel mechanism
Use sprocket wheel link chain mechanism, including drive mechanism II, chain wheel II, mobile chain, sprocket wheel IV；Guide rail front portion has for installing
Pedestal installed by the sprocket wheel of sprocket wheel IV, and guide rail rear portion has the reductor for installing drive mechanism II and installs pedestal, described sprocket wheel
II is arranged on the output shaft of drive mechanism II；Mobile chain passes bottom big frame, and one end is welded on after walking around sprocket wheel IV greatly
The front end of framework, the other end is welded on the rear end of big frame after walking around chain wheel II.
As a further improvement on the present invention, described mobile chain is fitted with inclination-proof device, including anti-dumping axle and be arranged on anti-dumping
The anti-tip wheel of axle, described anti-tip wheel at big frame along guide rail translation motion, it is possible to contact with the bottom surface of guide rail all the time.
As a further improvement on the present invention, described guide rail includes two tracks arranged in parallel, and each track is all by some
Individual support bar is supported；Big frame is equipped with wheels in the position corresponding to two tracks；Described anti-tip wheel is two, point
It is not installed on the two ends of anti-dumping axle, and is positioned in the track of correspondence.
As a further improvement on the present invention, described transmission component is fitted with directive wheel, and described directive wheel is by little axle location and installation
On moving assembly.
The effect of the present invention is as follows
The traction apparatus of lacing wire seam welder of the present invention, by rotating against of outer traffic cycle and interior traffic cycle, changes outer traffic cycle muscle
The spacing of plate and interior traffic cycle gusset, and then framework of steel reinforcement is indulged muscle be clamped and unclamp, with use at present by multiple gas
Cylinder drives swivelling web to swing the spacing changing fixing web and swivelling web and compares being clamped in the way of unclamping, structure
Simply, number of components is few, the most current clamping mode, and the vertical muscle of framework of steel reinforcement is a little with the clamping of fixing web and swivelling web
Contact, clamping force is little, and it is unreliable to clamp, and in the present invention, the vertical muscle of framework of steel reinforcement with the clamping of fixing web and swivelling web is
Linear contact lay, clamping force is big, reliable clamping.
The traction apparatus of lacing wire seam welder of the present invention, by sprocket wheel and chain drive, in driving, traffic cycle rotates, and passes through gear
The kind of drive compares, low cost of manufacture.
The traction apparatus of lacing wire seam welder of the present invention, drives chain by sprocket wheel, thus pulls the movement on guide rail of the whole framework,
By anti-overturn mechanism, effectively prevent whole framework from tumbling phenomenon.
Accompanying drawing explanation
Fig. 1 is the structural representation of traction apparatus of the present invention,
Fig. 2 is the enlarged drawing at traction apparatus A of the present invention,
Fig. 3 is the right view of traction apparatus Fig. 1 of the present invention,
Fig. 4 is the enlarged drawing at traction apparatus B of the present invention,
Fig. 5 is the enlarged drawing at traction apparatus C of the present invention,
Fig. 6 is the top view of traction apparatus Fig. 1 of the present invention,
Fig. 7 is the enlarged drawing at traction apparatus D of the present invention,
Fig. 8 is the enlarged drawing at traction apparatus E of the present invention,
Fig. 9 is the structural representation of traction apparatus clamp assembly of the present invention,
Figure 10 is the top view of traction apparatus clamp assembly Fig. 9 of the present invention,
Figure 11 is the structural representation of the outer traffic cycle of traction apparatus of the present invention,
Figure 12 is the profile of the outer traffic cycle Figure 11 of traction apparatus of the present invention,
Figure 13 is the structural representation of traffic cycle in traction apparatus of the present invention,
Figure 14 is the profile of traffic cycle Figure 13 in traction apparatus of the present invention,
Figure 15 is the structural representation of traction apparatus transmission component of the present invention,
Figure 16 is the structural representation of traction apparatus moving assembly of the present invention,
Wherein have: outer traffic cycle, 2. in traffic cycle, 3. connection dish, 4. rotary cylinder, 5. rotary shaft, 6. rotary shaft mounting seat,
7. drive end bearing bracket, 8. taper roll bearing I, 9. taper roll bearing II, 10. rear end cap, 11. big frames, 12. wheels, 13.
Mobile chain, 14. chains, 15. driving chains, 16. chain wheel I, 17. decelerator I, 18. motor I, 19. chain wheel II, 20.
Pedestal installed by reductor, pedestals installed by 21. sprocket wheels, 22. support bars, 23. directive wheels, 24. little axles, 25. guide rails, 26. usher to seat
Bearing III, 27. anti-dumping axle, 28. sprocket wheel III, 29. decelerator II, 30. motor II, 31. sprocket wheel IV, 32. sprocket wheels V, 33.
Rolling bearing units I, 34. power transmission shaft, 35. sprocket shafts, 36. rolling bearings, 37. anti-tip wheels, 38. rolling bearing units II, 39. are usherd to seat
Bearing IV.
Detailed description of the invention
Below in conjunction with accompanying drawing 1 to the accompanying drawing 16 in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear,
It is fully described by.
Referring to Fig. 1 to Figure 16, the present invention provides a kind of lacing wire seam welder traction apparatus, including clamp assembly, transmission component,
Moving assembly.
Described clamp assembly includes that outer traffic cycle is outer 1, interior traffic cycle 2, connection dish 3, rotary cylinder 4, rotary shaft 5, rotate
Axle mounting seat 6, drive end bearing bracket 7, taper roll bearing I 8, taper roll bearing II 9, rear end cap 10 and chain 14.
Described transmission component includes driving chain 15, chain wheel I 16, decelerator I 17, motor I 18, sprocket wheel III 28, sprocket wheel V
32, rolling bearing units I 33, rolling bearing units II 38 and power transmission shaft 34.
Described moving assembly include big frame 11, wheels 12, mobile chain 13, chain wheel II 19, reductor install pedestal 20,
Sprocket wheel is installed pedestal 21, support bar 22, directive wheel 23, little axle 24, guide rail 25, rolling bearing units III 26, anti-dumping axle 27, is subtracted
Speed device II 29, motor II 30, sprocket wheel IV 31, sprocket shaft 35, rolling bearing 36, anti-tip wheel 37 and rolling bearing units IV 39.
Described clamp assembly is rotated against by outer traffic cycle 1 and interior traffic cycle 2, changes outer traffic cycle 1 gusset and interior big turn
The spacing of dish 2 gusset, and then framework of steel reinforcement is indulged muscle be clamped or unclamp；Described transmission component passes through sprocket wheel and chain drive,
Imparting power to interior traffic cycle 2, in driving, traffic cycle 2 rotates, thus drives framework of steel reinforcement to rotate；Described moving assembly passes through
Sprocket wheel drives chain, thus pulls the big frame 11 movement together with the clamp assembly being arranged on big frame 11 on guide rail 25,
Thus drag framework of steel reinforcement and vertically move.
The rotary shaft of described clamp assembly is installed pedestal 6 and is fixed on the big frame 11 of described moving assembly by screw,
The directive wheel 23 of described moving assembly plays guide effect in interior traffic cycle 2 rotary course, and transmission component is arranged on moving assembly
On.
As shown in Fig. 2,9,10, described clamp assembly, described rotary shaft mounting seat 6 is arranged on big frame 11 by screw
In upper plane, described rotary shaft 5 is hollow axle, and one end is discoid, and rotary shaft 5 is by taper roll bearing I 8 and circular cone
Roller bearing II 9 is placed in rotary shaft mounting seat 10, and drive end bearing bracket 7 and rear end cap 10 are separately mounted to rotary shaft by screw
The front end of mounting seat 10 and rear end, described rotary cylinder 4 is arranged on the ladder platform of rotary shaft 5 front end by screw, described company
Flange 3 is arranged on the protecgulum of rotary cylinder 4 by screw, and in described interior traffic cycle, 2 by screw and rotary shaft 5 plate-like one end
Being connected, outer traffic cycle 1 is arranged on connection dish 3 by bolt, the described the most uniform some gussets of outer traffic cycle 1, gusset
The width of outer traffic cycle 1 main body of width ratio want width, the described the most uniform some gussets of interior traffic cycle 2, the width of gusset with
The width of interior traffic cycle 2 main body is consistent, when the prominent gusset of outer traffic cycle 1 is installed between 2 two pieces of gussets of interior traffic cycle,
Rotary cylinder 4 drives outer traffic cycle 1 to rotate the distance changed between outer traffic cycle 1 and interior traffic cycle 2 gusset, thus realizes folder
Tight or release function.
As shown in figure 15, described transmission component, described motor I 18 output shaft and decelerator I 17 power shaft are by shaft coupling phase
Connecting, described decelerator I 17 is arranged on big frame 11 by bolt, and described chain wheel I 16 is arranged on the defeated of decelerator I 17
On shaft, described power transmission shaft 34 is arranged on big frame bottom, sprocket wheel III 28 He by rolling bearing units I 33 and rolling bearing units II 38
Sprocket wheel V 32 is arranged on power transmission shaft 34 two ends by flat key, and power is passed through driving chain 15 through decelerator I 17 by motor I 18
Being delivered on power transmission shaft 34, described interior traffic cycle 2 outer ring is welded with a circle chain 14, by joining of sprocket wheel V 32 and chain 14
Conjunction imparts power in interior traffic cycle 2, thus drives turntable rotation.
As shown in figure 16, described moving assembly, described sprocket wheel is installed and is provided with sprocket wheel IV 31 on pedestal 21, is positioned at described guide rail
25 is anterior, and described reductor is installed pedestal 20 and is positioned at guide rail 25 rear portion, motor II 30 output shaft and the input of decelerator II 29
Axle is connected by shaft coupling, and decelerator II 29 is arranged on reductor by bolt and installs on pedestal 20, and described chain wheel II 19 is installed
On the output shaft of decelerator II 29, described mobile chain 13 passes bottom big frame 11, and one end is welded after walking around sprocket wheel IV 31
Being connected on the front end of big frame 11, the other end is welded on the rear end of big frame 11 after walking around chain wheel II 19, motor II 30 is through decelerator
Driving chain wheel II 19 to rotate after II 29 decelerations, thus move before and after driving big frame 11 on guide rail 25, anti-dumping axle 27 leads to
Crossing rolling bearing units III 26 and rolling bearing units IV 39 are arranged on the bottom of big frame 11, the two ends of anti-dumping axle 27 are provided with puts the axle that inclines
37, during moving before and after big frame 11 is on cross slide way 25, the anti-tip wheel 37 at anti-dumping axle 27 two ends and guide rail
The bottom surface contact of 25, effectively prevents big frame 11 from tumbling phenomenon.
Claims (10)
1. a lacing wire seam welder traction apparatus, it is characterised in that: include indulging the clamp assembly of muscle, transmission group for clamping framework of steel reinforcement
Part, moving assembly；Wherein:
Described clamp assembly, including outer traffic cycle and with outer traffic cycle, the interior traffic cycle of relative rotary motion can be done and the biggest
The most uniform some outer traffic cycle gussets on rotating disk, the most uniform some interior traffic cycle gussets of interior traffic cycle, simultaneously outside
Each piece of outer traffic cycle gusset on traffic cycle is in two pieces on interior traffic cycle between traffic cycle gusset；
Described transmission component, clutch end is connected with interior traffic cycle, and interior traffic cycle is under the power drive of transmission component, energy
Enough rotate around its axle；
Described moving assembly, including big frame and linear reciprocation travel mechanism, the clutch end of this linear reciprocation travel mechanism
Being connected with big frame, big frame is then connected with clamp assembly, under the power drive of linear reciprocation travel mechanism, and big frame
Clamp assembly is driven to do linear reciprocating motion.
Lacing wire seam welder traction apparatus the most according to claim 1, it is characterised in that: described outer traffic cycle is adjusted by gusset spacing
Joint mechanism is connected with interior traffic cycle, and interior traffic cycle is then located by connecting with big frame by rotary shaft；Gusset distance regulating mechanism
Including rotary cylinder, connection dish, connection dish is fixing with outer traffic cycle to be connected, the two ends of rotary cylinder respectively be connected dish, rotation
Rotating shaft is fixed, and rotary shaft, rotary cylinder, interior traffic cycle, outer traffic cycle are coaxially disposed simultaneously.
Lacing wire seam welder traction apparatus the most according to claim 2, it is characterised in that: described rotary shaft is T-shaped hollow axle, including
Open circles plate-like flat segments and hollow vertical section；The upper plane of big frame is fitted with rotary shaft mounting seat, the hollow of rotary shaft
Vertically section is by bearings in rotary shaft installs pedestal, and the open circles plate-like flat segments of rotary shaft is then solid with interior traffic cycle
Fixed connection.
4. according to lacing wire seam welder traction apparatus described in claim 1 or 2 or 3, it is characterised in that: the width of described outer traffic cycle gusset
Spend wider than the width of outer traffic cycle main body, and the width of interior traffic cycle gusset is consistent with the width of interior traffic cycle main body.
Lacing wire seam welder traction apparatus the most according to claim 1, it is characterised in that: described transmission component uses sprocket wheel chain to pass
Motivation structure, including drive mechanism the I, first sprocket chain strip transmission mechanism, power transmission shaft, the second sprocket chain strip transmission mechanism, the
One sprocket chain strip transmission mechanism includes chain wheel I, driving chain, sprocket wheel III；Second sprocket chain strip transmission mechanism includes sprocket wheel V
And driving chain, the clutch end of motor I is connected with sprocket wheel I；The clutch end of motor I pass sequentially through chain wheel I,
Driving chain, sprocket wheel III, power transmission shaft, sprocket wheel V are connected with driving chain, and drive mechanism I is fixedly mounted on big frame,
Power transmission shaft is arranged on big frame bottom, and drives chain to arrange along interior traffic cycle outer ring.
Lacing wire seam welder traction apparatus the most according to claim 5, it is characterised in that: described drive mechanism I include motor I with
And the decelerator I being connected with motor I clutch end.
Lacing wire seam welder traction apparatus the most according to claim 1, it is characterised in that: the lower end of described big frame is placed in by wheels
In guide rail, reciprocating linear travel mechanism uses sprocket wheel link chain mechanism, including drive mechanism II, chain wheel II, mobile chain,
Sprocket wheel IV；Guide rail front portion has the sprocket wheel for installing sprocket wheel IV and installs pedestal, and guide rail rear portion has for installing driving machine
Pedestal installed by the reductor of structure II, and described chain wheel II is arranged on the output shaft of drive mechanism II；Mobile chain is from big frame
Bottom passes, and one end is welded on the front end of big frame after walking around sprocket wheel IV, the other end is welded on big frame after walking around chain wheel II
Rear end.
Lacing wire seam welder traction apparatus the most according to claim 7, it is characterised in that: described mobile chain is fitted with inclination-proof device,
Including anti-dumping axle and the anti-tip wheel that is arranged on anti-dumping axle, described anti-tip wheel at big frame along guide rail translation motion, it is possible to
All the time contact with the bottom surface of guide rail.
Lacing wire seam welder traction apparatus the most according to claim 7, it is characterised in that: described guide rail include two arranged in parallel
Track, each track is all supported by several support bars；Big frame is at the equipped wheel in position corresponding to two tracks
Group；Described anti-tip wheel is two, is respectively arranged in the two ends of anti-dumping axle, and is positioned in the track of correspondence.
Lacing wire seam welder traction apparatus the most according to claim 7, it is characterised in that: described transmission component is fitted with directive wheel, institute
State directive wheel by little axle location and installation on moving assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330617.9A CN105945415B (en) | 2016-05-18 | 2016-05-18 | A kind of lacing wire seam welder draw-gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330617.9A CN105945415B (en) | 2016-05-18 | 2016-05-18 | A kind of lacing wire seam welder draw-gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105945415A true CN105945415A (en) | 2016-09-21 |
| CN105945415B CN105945415B (en) | 2018-01-30 |
Family
ID=56913205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610330617.9A Active CN105945415B (en) | 2016-05-18 | 2016-05-18 | A kind of lacing wire seam welder draw-gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105945415B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112475721A (en) * | 2020-11-16 | 2021-03-12 | 江苏科技大学 | Non-circular cross section steel reinforcement framework seam welder |
| CN112475719A (en) * | 2020-11-16 | 2021-03-12 | 江苏科技大学 | Forming mechanism of non-circular cross-section steel bar framework seam welder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112475721A (en) * | 2020-11-16 | 2021-03-12 | 江苏科技大学 | Non-circular cross section steel reinforcement framework seam welder |
| CN112475719A (en) * | 2020-11-16 | 2021-03-12 | 江苏科技大学 | Forming mechanism of non-circular cross-section steel bar framework seam welder |
| CN112475719B (en) * | 2020-11-16 | 2022-07-01 | 江苏科技大学 | Forming mechanism of non-circular cross-section steel bar framework seam welder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105945415B (en) | 2018-01-30 |
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