CN116214011A - Air chamber welding equipment of air cushion belt conveyor - Google Patents
Air chamber welding equipment of air cushion belt conveyor Download PDFInfo
- Publication number
- CN116214011A CN116214011A CN202310510982.8A CN202310510982A CN116214011A CN 116214011 A CN116214011 A CN 116214011A CN 202310510982 A CN202310510982 A CN 202310510982A CN 116214011 A CN116214011 A CN 116214011A
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- welding
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- plate
- air
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- 238000003466 welding Methods 0.000 title claims abstract description 66
- 238000001514 detection method Methods 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims description 20
- 239000004020 conductor Substances 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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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 for a procedure covered by only one of the other main groups of this subclass
-
- 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 for a procedure covered by only one of the other main groups of this subclass
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0252—Steering means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Structure Of Belt Conveyors (AREA)
Abstract
The utility model discloses air chamber welding equipment of an air cushion belt conveyor, which relates to the technical field of welding equipment and comprises a protection plate support, wherein two mutually symmetrical protection plates are arranged on the protection plate support in a sliding mode, the welding equipment further comprises a welding assembly, the welding assembly comprises a moving seat, four supporting wheels are rotatably arranged on the moving seat, two sliding rod supports are symmetrically arranged on the moving seat, sliding rods are slidably arranged on the two sliding rod supports through splines, and driving motors are fixedly arranged on the two sliding rods. The welding assembly provided by the utility model can swing the welding part to a plurality of positions, so that long welding seams at different positions are welded; by arranging the detection assembly, the welding part is ensured to be in a straight welding state all the time by detecting the rotation speed difference of the two detection rollers, so that manual welding is replaced; the welding device can be suitable for air chambers with different widths and heights, so that the welding device can be applied to the welding of the air chambers of the air cushion belt conveyor in different application fields.
Description
Technical Field
The utility model relates to the technical field of welding equipment, in particular to air chamber welding equipment of an air cushion belt conveyor.
Background
The air cushion conveyor is a belt conveyor which uses a thin air film to support a conveying belt and materials on the conveying belt. The carrier roller of carrier roller belt conveyer is replaced by air chamber disk slot with holes, when air source provides air with certain pressure and flow rate to air chamber, the air in air chamber escapes from small holes on disk slot, and a layer of air film supporting conveyer belt with certain pressure and its upper material is formed between conveyer belt and disk slot. The carrier roller bearings arranged at certain intervals are changed into continuous air cushion bearings, so that roller friction between the conveying belt and the carrier roller is changed into fluid friction between the conveying belt and the disc groove by taking air as a medium, and the running resistance is reduced. Because most of the air cushion conveyor is applied to the field of mineral product conveying, the length of the air cushion conveyor is long, and a large amount of manpower is required for long-time welding when the air chamber is welded.
The Chinese patent with the bulletin number of CN217096347U discloses an air chamber unit welding tool of an air cushion conveyor, which comprises an automatic welding machine supporting unit and an air chamber unit supporting unit; the automatic welding machine supporting unit comprises a cross beam, a first upright post and a rail; the cross beam is connected between the two first upright posts to form a door shape; the two rails are connected below the cross beam and between the two first upright posts, and the rails are perpendicular to the cross beam and the first upright posts; the upper surface of the cross beam is flat and forms a trolley running surface of the automatic welding machine; the air chamber unit supporting unit comprises a bottom frame, an upper leaning beam and a lower clamping beam; two ends of the upper leaning beam are connected to the bottom frame through two second upright posts to form a door shape; the lower clamping beam is connected to the bottom frame and is parallel to the upper leaning beam; the bottom of the bottom frame is connected with rollers which are matched with the connecting tracks; an air chamber unit placing area is formed between the upper leaning beam and the lower clamping beam; the air chamber unit supporting unit walks below the cross beam along the track; the tail end of the rail is connected with a stop block; the walking path of the air chamber unit supporting unit is provided with a positioning device. However, the trolley of the automatic welding machine in the prior art cannot keep stable linear motion on the surface of the steel plate, so that the technical problem of asymmetry of welding seams on two sides of the steel plate is caused.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides the following technical scheme: the air chamber welding equipment of the air cushion belt conveyor comprises a protection plate support, two mutually symmetrical protection plates are arranged on the protection plate support in a sliding mode, the welding assembly comprises a moving seat, four supporting wheels are rotatably arranged on the moving seat, two sliding rod supports are symmetrically arranged on the moving seat, sliding rods are slidably arranged on the two sliding rod supports through splines, driving motors are fixedly arranged on the two sliding rods, driving rollers are fixedly arranged on output shafts of the driving motors, flexible supports are respectively arranged on the two driving motors, and welding parts are respectively arranged on the flexible supports; still include the detection component, detection component includes the bottom plate, slidable mounting has the fly leaf on the bottom plate, has set up the extension spring on the fly leaf, the both ends of extension spring respectively with bottom plate and fly leaf fixed connection, it has the detection roller to rotate on the bottom plate and install the detection roller, the bottom fixed mounting who detects the roller has top band pulley and bottom band pulley, still fixed mounting has disk support on the bottom plate, rotates on the disk support and installs top disk, bottom disk and insulating band pulley, and wherein insulating band pulley sets up on the plane of symmetry of top disk and bottom disk, the conductor strip has been set up on the insulating band pulley, rotate on the fly leaf and install contrast band pulley and two vice band pulleys, still set up the slide rail on the fly leaf, and slidable mounting has the slider on the slide rail, rotate on the slider and install vice band pulley, still set up elastic component on the slider.
Preferably, the guard plate support is fixedly mounted on the movable seat, springs are respectively wound on the two sliding rods, and two ends of each spring are respectively fixed with the sliding rods and the sliding rod support.
Preferably, the movable seat is fixedly provided with a sliding frame, the bottom plate is slidably arranged on the sliding frame, and the sliding frame is provided with screws for fixing the bottom plate on the sliding frame.
Preferably, the top belt pulley is in transmission connection with the top magnetic disk through a top transmission belt, and the bottom belt pulley is in transmission connection with the bottom magnetic disk through a bottom transmission belt.
Preferably, two ends of the elastic component are fixedly connected with the sliding plate and the sliding block respectively.
Preferably, the insulating belt wheel disc, the comparison belt wheel and the three auxiliary belt wheels are in transmission connection through a steering transmission belt, and the detection roller is also rotatably arranged on the sliding plate through the detection roller, wherein the comparison belt wheel is fixedly connected with the detection roller.
Compared with the prior art, the utility model has the following beneficial effects: (1) The welding assembly provided by the utility model can swing the welding part to a plurality of positions, so that long welding seams at different positions are welded; (2) According to the utility model, the detection assembly is arranged, and the welding part is ensured to be in a straight welding state all the time by detecting the rotation speed difference of the two detection rollers, so that manual welding is replaced; (3) The utility model can be suitable for air chambers with different widths and heights, so that the utility model can be applied to the welding of the air chambers of air cushion belt conveyors in different application fields.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a bottom view of the overall structure of the present utility model.
Fig. 3 is a view of the flexible stent mounting location of the present utility model.
Fig. 4 is a schematic diagram of the structure a in fig. 3 according to the present utility model.
FIG. 5 is a schematic diagram of a detecting assembly according to the present utility model.
Fig. 6 is a schematic view of the structure of the conductor bar of the present utility model.
In the figure: 101-a bottom plate; 102-a sliding plate; 103-detecting a roller; 104-detecting the roller; 105-top pulley; 106-a bottom pulley; 107-top belt; 108-a bottom belt; 109-a tension spring; 110-top disk; 111-bottom disk; 112-an insulating pulley disc; 113-a steering belt; 114-contrast pulley; 115-secondary pulley; 116-sliding blocks; 117-resilient elastic members; 118-conductor bars; 119-a disk holder; 201-a mobile seat; 202-supporting wheels; 203-a carriage; 204-screws; 205-spring; 206-a sliding bar; 207-sliding bar support; 208-driving a motor; 209-driving rollers; 210-a flexible stent; 211-welding part; 301-a fender bracket; 302-guard plate; 4-an air box; 5-arc air plate.
Detailed Description
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 6, the air chamber welding device of the air cushion belt conveyor provided by the utility model comprises a guard plate support 301, two mutually symmetrical guard plates 302 are slidably arranged on the guard plate support 301, the air chamber welding device further comprises a welding assembly, the welding assembly comprises a movable seat 201, four supporting wheels 202 are rotatably arranged on the movable seat 201, two sliding rod supports 207 are symmetrically arranged on the movable seat 201, sliding rods 206 are slidably arranged on the two sliding rod supports 207 through splines, driving motors 208 are fixedly arranged on the two sliding rods 206, driving rollers 209 are fixedly arranged on output shafts of the driving motors 208, flexible supports 210 are respectively arranged on the two driving motors 208, welding parts 211 are respectively arranged on the flexible supports 210, the guard plate support 301 is fixedly arranged on the movable seat 201, springs 205 are respectively arranged on the two sliding rods 206 in a surrounding mode, two ends of each spring 205 are respectively fixed with the sliding rods 206 and the sliding rod supports 207, a sliding frame 203 is fixedly arranged on the movable seat 201, a base plate 101 is slidably arranged on the sliding frame 203, and screws 204 for fixing the base plate 101 on the sliding frame 203 are respectively arranged on the sliding frame 203.
The detecting assembly further comprises a bottom plate 101, the bottom plate 101 is provided with a sliding plate 102 in a sliding mode, the sliding plate 102 is provided with a tension spring 109, two ends of the tension spring 109 are fixedly connected with the bottom plate 101 and the sliding plate 102 respectively, the bottom plate 101 is provided with a detecting roller 104 in a rotating mode, the bottom end of the detecting roller 104 is fixedly provided with a detecting roller 103, the top of the detecting roller 104 is fixedly provided with a top belt wheel 105 and a bottom belt wheel 106, the bottom plate 101 is also provided with a disk bracket 119 in a fixed mode, the disk bracket 119 is provided with a top disk 110, a bottom disk 111 and an insulating belt wheel 112 in a rotating mode, the insulating belt wheel 112 is arranged on a symmetrical plane of the top disk 110 and the bottom disk 111, the insulating belt wheel 112 is provided with a conductor strip 118, the sliding plate 102 is provided with a comparison belt wheel 114 and two auxiliary belt wheels 115 in a rotating mode, the sliding plate 102 is further provided with a sliding rail, the sliding block 116 is provided with an elastic component 117 in a rotating mode, and the sliding block 116 is further provided with an elastic component 117. The top belt wheel 105 is in transmission connection with the top magnetic disk 110 through a top transmission belt 107, the bottom belt wheel 106 is in transmission connection with the bottom magnetic disk 111 through a bottom transmission belt 108, and two ends of the elastic component 117 are respectively and fixedly connected with the sliding plate 102 and the sliding block 116. The insulating belt wheel disc 112, the comparison belt wheel 114 and the three auxiliary belt wheels 115 are in transmission connection through a steering transmission belt 113, and the detection roller 103 is rotatably arranged on the sliding plate 102 through the detection roller 104, wherein the comparison belt wheel 114 is fixedly connected with the detection roller 104.
The utility model discloses an air chamber welding device of an air cushion belt conveyor, which comprises the following working principles: firstly, placing the arc-shaped air plate 5 on the air box 4, then placing the device on the arc-shaped air plate 5, specifically, contacting the supporting wheel 202 with the edge of the upper surface of the arc-shaped air plate 5, so that the two detecting rollers 103 and the two driving rollers 209 are respectively clamped on two sides of the air box 4, the springs 205 are in a compressed state, the tension springs 109 are in a stretching state, during welding, the starting of the two driving motors 208 is controlled, the output shafts of the driving motors 208 can drive the driving rollers 209 to rotate, the driving rollers 209 can roll on two sides of the arc-shaped air plate 5, at the moment, the whole device can move along the arc-shaped air plate 5, at the same time, the two welding parts 211 are started, the two edges of the arc-shaped air plate 5 can be welded on the air box 4 (before use, the welding parts 211 need to be swung to the welding positions of the arc-shaped air plate 5 and the air box 4 through the flexible supports 210). Because the length of the air tank 4 and the arc-shaped air plate 5 is longer, if the concave-convex appears on one side of the air tank 4 in the welding process, at this time, because the rotational speeds of the two driving motors 208 are the same at the beginning (the rotational speeds of the two driving motors 208 need to be the same when advancing), therefore, the rotational speeds of the two driving rollers 209 are the same, when the concave-convex appears on one side of the air tank 4 (deformation occurs on the plane), the distance that the driving rollers 209 on the concave-convex side need to travel will be greater than the other side, at this time, the driving rollers 209 on the concave-convex side will lag behind the driving rollers 209 on the other side, so that the movable seat 201 will deflect, when the movable seat 201 deflects, the driving motors 208 mounted on the movable seat 201 will deflect synchronously, at this time, the welding portion 211 mounted on the driving motors 208 will deflect, at this time, the distance between the welding ends of the welding portion 211 and the welding position will change (one side is in direct contact with the air tank 4 and the arc-shaped air plate 5, the other side is far away from the air tank 4, the arc-shaped air plate 5, the welding portion 211 in contact with the arc-shaped air plate 5 will receive a reaction force, so that the flexible support 210 is caused, if the flexible support 210 is generated, and the flexible support is not damaged, and the flexible support is deformed, and the welding portion is deformed, and the flexible support is deformed, and the welding portion is easy to be deformed, if the flexible support is 4 and the welding portion is deformed, and the welding portion is the welding portion 5 is deformed. Therefore, the detection component is installed on the moving seat 201, the detection roller 103 in the detection component is arranged before the driving roller 209 in the forward direction, when the rotation speed of the detection roller 103 at two sides is the same, the detection roller 103 contacts with the bottom disk 111, and the rotation speed of the detection roller 103 at one side of the concave-convex surface is larger than that of the detection roller 103 at the other side because the driving roller 209 always pushes the device to move, when the detection roller 103 rolls over two sides of the air box 4, as shown in fig. 5, the detection roller 104 at one side drives the top disk 110 and the bottom disk 111 to synchronously rotate through the top transmission belt 107 and the bottom transmission belt 108, the detection roller 104 at the other side synchronously rotates through the comparison belt 114 and the insulation belt pulley 112, when the rotation speed of the detection roller 103 at two sides is the same, the rotation speed of the top disk 110, the bottom disk 111 and the insulation belt pulley 112 synchronously rotates, and if the rotation speed of the detection roller 103 at one side is larger than the other side, and the rotation speed of the insulation belt pulley 111 is not synchronous (relative rotation occurs), the magnetic induction line between the top disk 110 and the bottom disk 111 is cut by a conductor strip, and the conductor strip 118 is induced, and the current is induced by the conductor strip 118, and the current is induced by the detection roller 103, and the rotation speed is controlled by the two sides of the opposite rotation speed of the top disk 110 and the rotation speed of the insulation belt 112, and the rotation speed is larger than the rotation speed is detected by the rotation speed of the top disk 110 and the rotation speed of the disk 110 and the insulation belt 112, the mobile station 201 will not deflect at this time.
Claims (6)
1. The utility model provides an air chamber welding equipment of air cushion belt conveyor, includes guard plate support (301), and the slip is provided with two guard plates (302) of mutual symmetry, its characterized in that on guard plate support (301): the welding device comprises a welding assembly, and is characterized by further comprising a moving seat (201), wherein four supporting wheels (202) are rotatably arranged on the moving seat (201), two sliding rod supports (207) are symmetrically arranged on the moving seat (201), sliding rods (206) are slidably arranged on the two sliding rod supports (207) through splines, driving motors (208) are fixedly arranged on the two sliding rods (206), driving rollers (209) are fixedly arranged on output shafts of the driving motors (208), flexible supports (210) are respectively arranged on the driving motors (208), and welding parts (211) are respectively arranged on the flexible supports (210);
still include detection component, detection component includes bottom plate (101), slidable mounting has slide plate (102) on bottom plate (101), has set up extension spring (109) on slide plate (102), the both ends of extension spring (109) respectively with bottom plate (101) and slide plate (102) fixed connection, detect roller (104) are installed in the rotation on bottom plate (101), detect roller (104) bottom fixed mounting has detect gyro wheel (103), detect roller (104) top fixed mounting has top band pulley (105) and bottom band pulley (106), still fixed mounting has disk bracket (119) on bottom plate (101), rotate on disk bracket (119) and install top disk (110), bottom disk (111) and insulating band pulley (112), wherein insulating band pulley dish (112) set up on the symmetry plane of top disk (110) and bottom disk (111), set up conductor strip (118) on insulating band pulley (112), install contrast band pulley (114) and two vice band pulleys (115) on slide plate (102) are rotated, still set up on slide rail (102), and slider (116) are installed on slider (116), the sliding block (116) is also provided with an elastic component (117).
2. The air cell welding apparatus of an air cell belt conveyor of claim 1, wherein: the protection plate support (301) is fixedly arranged on the movable seat (201), springs (205) are respectively arranged on the two sliding rods (206) in a surrounding mode, and two ends of each spring (205) are respectively fixed with the sliding rods (206) and the sliding rod support (207).
3. The air cell welding apparatus of an air cell belt conveyor of claim 2, wherein: the movable seat (201) is fixedly provided with a sliding frame (203), the bottom plate (101) is slidably arranged on the sliding frame (203), and the sliding frame (203) is provided with screws (204) for fixing the bottom plate (101) on the sliding frame (203).
4. A gas cell welding apparatus for an air cell belt conveyor as claimed in claim 3 wherein: the top belt wheel (105) is in transmission connection with the top magnetic disk (110) through a top transmission belt (107), and the bottom belt wheel (106) is in transmission connection with the bottom magnetic disk (111) through a bottom transmission belt (108).
5. The air cell welding apparatus of an air cell belt conveyor of claim 4, wherein: both ends of the elastic component (117) are respectively fixedly connected with the sliding plate (102) and the sliding block (116).
6. The air cell welding apparatus of an air cell belt conveyor of claim 5, wherein: the insulation belt wheel (112), the comparison belt wheels (114) and the three auxiliary belt wheels (115) are in transmission connection through a steering transmission belt (113), and the detection roller (103) is rotatably installed on the sliding plate (102) through the detection roller (104), wherein the comparison belt wheels (114) are fixedly connected with the detection roller (104).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310510982.8A CN116214011B (en) | 2023-05-09 | 2023-05-09 | Air chamber welding equipment of air cushion belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310510982.8A CN116214011B (en) | 2023-05-09 | 2023-05-09 | Air chamber welding equipment of air cushion belt conveyor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116214011A true CN116214011A (en) | 2023-06-06 |
| CN116214011B CN116214011B (en) | 2023-07-21 |
Family
ID=86589545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310510982.8A Active CN116214011B (en) | 2023-05-09 | 2023-05-09 | Air chamber welding equipment of air cushion belt conveyor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116214011B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61245980A (en) * | 1985-04-24 | 1986-11-01 | Shitara Seisakusho:Kk | Seam welding method and its equipment |
| CN106695210A (en) * | 2017-03-20 | 2017-05-24 | 浙江国际海运职业技术学院 | Automatic welding machine and use method thereof |
| CN207344037U (en) * | 2017-09-29 | 2018-05-11 | 新昌县鼎石科技咨询服务有限公司 | A kind of workpiece welding equipment |
| CN108515308A (en) * | 2018-03-30 | 2018-09-11 | 宁波辉励铭诚汽车零部件有限公司 | A kind of automatic welding device |
| CN112264735A (en) * | 2020-11-05 | 2021-01-26 | 邓子贤 | Large-scale metal sheet plasma cutting machine |
| CN113427171A (en) * | 2021-05-28 | 2021-09-24 | 安徽军民游乐科技有限公司 | Efficient welding device for I-shaped steel |
| CN113878274A (en) * | 2021-11-16 | 2022-01-04 | 浙江精工钢结构集团有限公司 | Welding equipment for support ribs of steel bar truss |
-
2023
- 2023-05-09 CN CN202310510982.8A patent/CN116214011B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61245980A (en) * | 1985-04-24 | 1986-11-01 | Shitara Seisakusho:Kk | Seam welding method and its equipment |
| CN106695210A (en) * | 2017-03-20 | 2017-05-24 | 浙江国际海运职业技术学院 | Automatic welding machine and use method thereof |
| CN207344037U (en) * | 2017-09-29 | 2018-05-11 | 新昌县鼎石科技咨询服务有限公司 | A kind of workpiece welding equipment |
| CN108515308A (en) * | 2018-03-30 | 2018-09-11 | 宁波辉励铭诚汽车零部件有限公司 | A kind of automatic welding device |
| CN112264735A (en) * | 2020-11-05 | 2021-01-26 | 邓子贤 | Large-scale metal sheet plasma cutting machine |
| CN113427171A (en) * | 2021-05-28 | 2021-09-24 | 安徽军民游乐科技有限公司 | Efficient welding device for I-shaped steel |
| CN113878274A (en) * | 2021-11-16 | 2022-01-04 | 浙江精工钢结构集团有限公司 | Welding equipment for support ribs of steel bar truss |
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| Publication number | Publication date |
|---|---|
| CN116214011B (en) | 2023-07-21 |
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