CN113245680A - Automatic welding production line for steel stand columns - Google Patents
Automatic welding production line for steel stand columns Download PDFInfo
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- CN113245680A CN113245680A CN202110710196.3A CN202110710196A CN113245680A CN 113245680 A CN113245680 A CN 113245680A CN 202110710196 A CN202110710196 A CN 202110710196A CN 113245680 A CN113245680 A CN 113245680A
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- 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
- B23K10/00—Welding or cutting by means of a plasma
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- 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
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
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- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
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- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- 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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- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides an automatic welding production line for steel columns, which comprises at least four rotary welding position changing machines, wherein the four rotary welding position changing machines are sequentially arranged at intervals along the horizontal direction of the production line, a power conveying belt in the horizontal direction is arranged between every two adjacent rotary welding position changing machines, the power conveying belts are arranged on two sides of the first rotary welding position changing machine and the last rotary welding position changing machine, a truss type plasma cutting machine is arranged behind the first rotary welding position changing machine, a vertical steel plate conveyor and a multi-degree-of-freedom welding robot are arranged behind the second rotary welding position changing machine, and a truss type welding machine is arranged behind the third rotary welding position changing machine. The invention has the advantages that: in the welding production line, the cutting of the welding groove, the spot welding of the rectangular steel pipe and the steel plate and the full welding of the rectangular steel pipe and the steel plate are all automatically welded by adopting a welding robot, so that the labor efficiency is improved, the labor intensity of workers is reduced, the personnel cost of enterprises is reduced, and the working environment of the workers is improved.
Description
Technical Field
The invention relates to the technical field of automatic welding production lines of steel stand columns of fabricated buildings, in particular to an automatic welding production line of steel stand columns.
Background
The prefabricated building is a building formed by directly assembling building components and fittings processed and manufactured in a factory on a building site, and is one of the development trends of the future building industry due to the adoption of standardized design, factory production, assembly construction and the like. The fabricated steel structure building is one of the main types of fabricated buildings, has the advantages of being light, fast, convenient and economical, can improve the building quality, is more environment-friendly and energy-saving, reduces labor force, improves production efficiency and reduces construction cost, and is the direction of urban construction development in the future. The steel upright posts are basic parts of the fabricated steel structure building, are main bearing parts in the building and are abundant in the steel structure fabricated building.
Generally, each steel upright is formed by connecting a plurality of sections of rectangular steel pipes, and steel plates are designed between adjacent rectangular steel pipes and at two ends of each steel upright to serve as reinforcing ribs. In order to ensure the welding quality, welding grooves are arranged at two ends of the rectangular steel pipe. During welding, the steel plate and the steel pipe are aligned and fixed in a spot welding mode by workers according to requirements, and then the steel plate and the steel pipe are fully welded together. At present, the steel upright post is welded mainly in a manual welding mode, so that the labor intensity is high, the field working environment is severe, the production efficiency is low, and the welding quality cannot be guaranteed. Along with the continuous improvement of human cost, the personnel selection cost of enterprise also constantly rises, adopts automatic welding production line, can effectively increase production efficiency, reduces the human cost.
Disclosure of Invention
In order to solve the technical problems existing in the background technology, the invention adopts the technical scheme that:
the utility model provides an automatic welding production line of steel stand, includes four at least spin welding machine of shifting, four the spin welding machine of shifting is along the horizontal direction interval arrangement in proper order of production line, all is provided with the power conveyer belt of horizontal direction between every two adjacent spin welding machine of shifting, first platform all is equipped with power conveyer belt with last spin welding machine of shifting both sides, be provided with truss-like plasma cutting machine behind the first spin welding machine of shifting, be provided with vertical steel sheet conveyer and multi freedom welding robot behind the second spin welding machine of shifting, be provided with the truss-like welding machine behind the third spin welding machine of shifting.
Preferably, the spin welding positioner comprises a base, the bottom side of the base is fixed on the ground, a circular hole-shaped seat ring is fixedly connected to the upper side of the base, the inner wall of the circular hole-shaped seat ring is rotatably connected with an inner ring and can rotate more than an angle in the circular hole-shaped seat ring, four clamping mechanisms are arranged on the inner ring and are uniformly arranged along the circumferential direction of the inner ring, and an unpowered conveying belt is arranged on the inner side of the spin welding positioner.
Preferably, the clamping mechanism comprises four side plates, the four side plates are uniformly and fixedly connected to one side of the inner ring along the circumferential direction of the inner ring, each side plate is provided with a guide hole, one side of each side plate is fixedly connected with a hydraulic cylinder, a hydraulic rod of each hydraulic cylinder penetrates through the guide hole and is fixedly connected with a clamping plate, and the four clamping plates are arranged oppositely.
Preferably, the clamping mechanisms of the first rotary welding positioner and the last rotary welding positioner are arranged oppositely, and the clamping mechanisms of the two rotary welding positioners in the middle are arranged oppositely.
Preferably, the horizontal heights of the power conveyor and the unpowered conveyor of the production line before the vertical steel plate conveyor are equal, the horizontal heights of the power conveyor and the unpowered conveyor of the production line after the vertical steel plate conveyor are equal, and the horizontal height of the production line after the vertical steel plate conveyor is lower than the horizontal height of the production line before the vertical steel plate conveyor.
Preferably, the truss type plasma cutting machine comprises a first truss, the bottom side of the first truss is fixed on the ground, a first three-degree-of-freedom truss type manipulator is mounted on the first truss, and a cutting gun of the plasma cutting machine is mounted at an execution end of the first three-degree-of-freedom truss type manipulator.
Preferably, the truss type welding machine comprises a second truss, the bottom side of the second truss is fixed on the ground, a second three-degree-of-freedom truss type manipulator is mounted on the second truss, and a welding gun is mounted at an execution end of the second three-degree-of-freedom truss type manipulator.
Preferably, vertical steel sheet conveyer includes the support frame, the support frame bottom side is fixed subaerial, support frame upside fixed connection steel sheet conveyer belt, the direction of delivery mutually perpendicular of steel sheet conveyer belt and power conveyer belt, steel sheet conveyer belt upside is equipped with steel sheet guiding mechanism, steel sheet conveyer belt and steel sheet guiding mechanism extend to steel sheet welding frock jointly.
Preferably, the steel sheet guiding mechanism includes two deflectors, two the deflector all sets up at the steel sheet conveyer belt upside, two the deflector all is equipped with the guide way, every all rotate between the upper and lower both sides cell wall of guide way and connect the unpowered smooth roller of a plurality of vertical settings, two be equipped with the direction passageway between the deflector.
Preferably, the steel sheet welding frock includes the cylinder of two vertical settings, two equal fixed connection of cylinder is on the support frame bottom side, two the common fixed connection locating plate in piston rod upper end of cylinder, the locating plate upside is equipped with the constant head tank, the constant head tank corresponds the setting with the direction passageway.
The invention has the advantages that: according to the automatic welding production line for the steel stand columns, the cutting of the welding grooves, the spot welding of the rectangular steel pipes and the steel plates and the full welding of the rectangular steel pipes and the steel plates are all automatically welded by the welding robot, so that the labor efficiency is improved, the labor intensity of workers is reduced, the labor cost of enterprises is reduced, and the working environment of the workers is improved.
Moreover, the automatic welding technology is adopted, so that the quality of the welding seam is effectively guaranteed, and the quality of the welding seam and the fluctuation of the welding quality of the steel upright post are reduced.
Drawings
The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is a schematic diagram of the basic structure of the present invention;
FIG. 2 is a schematic structural view of a spin welding positioner;
FIG. 3 is a schematic diagram of the basic structure of a truss welder;
FIG. 4 is a schematic diagram of the basic structure of a truss type plasma cutting machine;
fig. 5 is a schematic view of the basic structure of the vertical steel plate conveyor.
Detailed Description
The invention will be further described with reference to the following drawings and specific examples, which are not intended to limit the invention thereto.
Example 1
As shown in fig. 1-5, the automatic welding production line for the steel columns provided by the invention comprises four rotary welding position changers 1, wherein the four rotary welding position changers 1 are sequentially arranged at intervals along the horizontal direction of the production line, a power conveying belt 2 in the horizontal direction is arranged between every two adjacent rotary welding position changers 1, the power conveying belts 2 are arranged on two sides of the first rotary welding position changer 1 and the last rotary welding position changer 1, a truss type plasma cutting machine 3 is arranged behind the first rotary welding position changer 1, a vertical steel plate conveyor 5 and a multi-degree-of-freedom welding robot 4 are arranged behind the second rotary welding position changer 1, and a truss type welding machine 6 is arranged behind the third rotary welding position changer 1. The rotary welding positioner 1 comprises a base 11, the bottom side of the base 11 is fixed on the ground, a circular hole-shaped seat ring 111 is fixedly connected to the upper side of the base 11, the inner wall of the circular hole-shaped seat ring 111 is rotatably connected with an inner ring 12 and can rotate more than 180 degrees in the circular hole-shaped seat ring 111, four clamping mechanisms 13 are arranged on the inner ring 12 and are uniformly arranged in the circumferential direction along the inner ring 12, and an unpowered conveying belt 14 is arranged on the inner side in each rotary welding positioner 1. Clamping mechanism 13 includes four curb plates 131, and four curb plates 131 all are equipped with the guiding hole in the even fixed connection of the circumferencial direction of inner circle 12 one side at inner circle 12 on every curb plate 131, every curb plate 131 one side equal fixed connection pneumatic cylinder 132, and the hydraulic stem of every pneumatic cylinder 132 all passes guiding hole fixed connection splint 133, and four splint 133 set up relatively. The first rotary welding positioner 1 and the last rotary welding positioner 1 are arranged oppositely, and the middle two rotary welding positioner 1 are arranged oppositely by the clamping mechanism 13. The horizontal heights of the power conveyor 2 and the unpowered conveyor 14 of the production line before the vertical steel plate conveyor 5 are equal, the horizontal heights of the power conveyor 2 and the unpowered conveyor 14 of the production line after the vertical steel plate conveyor 5 are equal, and the horizontal height of the production line after the vertical steel plate conveyor 5 is lower than the horizontal height of the production line before the vertical steel plate conveyor 5.
The first section rectangular steel pipe gets into this automatic welding production line along power conveyor belt 2 by the left side of production line, the 12 inner ring designs of inner circle of first station spin welding machine of shifting 1 have unpowered conveyer 14, the orbital height of unpowered conveyer 14 is the same with left power conveyor belt 2 height, first section rectangular steel pipe gets into spin welding machine of shifting 1's hole along unpowered conveyer 14's track, clamping mechanism 13 stretches out under the effect of pneumatic cylinder 132 to make four splint 133 press from both sides tight first section rectangular steel pipe jointly. The truss type plasma cutting machine 3 comprises a first truss 31, wherein the bottom side of the first truss 31 is fixed on the ground, a first three-degree-of-freedom truss type manipulator 32 is installed on the first truss 31, and a cutting gun 33 of the plasma cutting machine is installed at the execution end of the first three-degree-of-freedom truss type manipulator 32. A cutting gun 33 of a plasma cutting machine of the truss type plasma cutting machine 3 forms a welding groove on the right end of the rectangular steel pipe, and the first rotary welding positioner 1 clamps the rectangular steel pipe to rotate, so that the truss type plasma cutting machine 3 can form a welding groove on the other 3 sides of the right end of the rectangular steel pipe.
After the first section of rectangular steel pipe finishes the process of forming the welding groove in the first rotary welding positioner 1, the clamping device 13 loosens the rectangular steel pipe, the rectangular steel pipe can continuously enter the second rotary welding positioner 1 along the power conveying belt 2 and the unpowered conveying belt 14, and the clamping mechanism 13 of the second rotary welding positioner 1 can clamp the rectangular steel pipe. A vertical steel plate feeding mechanism 5 is arranged on the right side of the second rotary welding positioner 1, the vertical steel plate conveyor 5 comprises a support frame 51, the bottom side of the support frame 51 is fixed on the ground, a steel plate conveying belt 52 is fixedly connected to the upper side of the support frame 51, and the conveying directions of the steel plate conveying belt 52 and the power conveying belt 2 are mutually vertical; the steel plate conveying belt 52 is provided with a steel plate guide mechanism 53 on the upper side, and the steel plate conveying belt 52 and the steel plate guide mechanism 53 jointly extend to a steel plate welding tool 54. The steel plate guide mechanism 53 comprises two guide plates 531, wherein the two guide plates 531 are arranged on the upper side of the steel plate conveying belt 52, the two guide plates 531 are provided with guide grooves, a plurality of vertically arranged unpowered sliding rollers 532 are rotatably connected between the upper side groove wall and the lower side groove wall of each guide groove, and a guide channel 533 is arranged between the two guide plates 531. The steel sheet welding frock 54 includes the cylinder 541 of two vertical settings, and the equal fixed connection of two cylinders 541 is on the bottom side of support frame 51, and the common fixed connection locating plate 542 in two cylinder 541's piston rod upper end, locating plate 542 upside are equipped with the constant head tank 543, and the constant head tank 543 corresponds the setting with guide way 533. The steel plate conveying belt 52 is used for conveying the steel plate 50, the steel plate guiding mechanism 53 is used for guiding the moving direction of the steel plate 50, the steel plate 50 enters the steel pipe welding tool 54 from the steel plate conveying belt 52 through the unpowered sliding roller 532 in a guiding channel 533 between the two guiding plates 531, and the steel plate 50 is kept in an upright state and enters the positioning groove 543 from the guiding channel 533 and is aligned with the rectangular steel pipe. The right side of the second rotary welding positioner 1 is provided with a multi-degree-of-freedom welding robot 4 for spot welding the steel plate 50 and one edge of the right end face of the rectangular steel pipe together; then, the positioning plate 542 is driven by the cylinder 541 to descend in height, and the second rotary welding positioner 1 clamps the rectangular steel pipe and the steel plate 50 to rotate, so that spot welding of the other three edges of the right end face of the rectangular steel pipe and the steel plate 50 is completed; meanwhile, the truss type plasma cutting machine 3 finishes cutting the welding grooves on the four sides of the left end face of the first section of rectangular steel pipe; at the moment, the second section of rectangular steel pipe enters the welding production line along the power conveying belt 2 and enters the first rotary welding positioner 1 along the power conveying belt 2, the first rotary welding positioner 1 clamps the second section of rectangular steel pipe, and a welding groove is formed in the right end face of the second section of rectangular steel pipe by the truss type plasma cutting machine 3.
After the beveling and spot welding operations are completed, the first section of steel upright column enters a third rotary welding positioner 1 along a power conveying belt 2 and an unpowered conveying belt 14, and a truss type welding machine 6 is arranged on the right side of the third rotary welding positioner 1. The truss type welding machine 6 comprises a second truss 61, the bottom side of the second truss 61 is fixed on the ground, a second three-degree-of-freedom truss type manipulator 62 is installed on the second truss 61, and a welding gun 62 is installed at the execution end of the second three-degree-of-freedom truss type manipulator 62. The third spin welding positioner 1 clamps the first section of steel column to rotate, so that the truss welder 6 completes full welding of the right end face of the first section of steel column and the steel plate 50. Meanwhile, the multi-degree-of-freedom welding robot 4 on the right side of the second rotary welding positioner 1 spot welds the left end face of the first section of rectangular steel pipe, the second steel plate 50 and the right end face of the second section of rectangular steel pipe together, and the truss type plasma cutting machine 3 on the left side of the first rotary welding positioner 1 finishes the operation of cutting and welding a groove on the left end face of the second section of rectangular steel pipe.
After the steel upright column completes the process, the steel upright column continues to move forward along the power conveying belt 2, wherein the first section of rectangular steel pipe enters the last rotary welding positioner 1, the second section of rectangular steel pipe enters the third rotary welding positioner 1, the third rotary welding positioner 1 and the last rotary welding positioner 1 simultaneously clamp the steel upright column and rotate, the truss type welding machine 6 on the right side of the third rotary welding positioner completes the full welding process of the left end face of the first section of rectangular steel pipe, the second steel plate 50 and the right end face of the second section of rectangular steel pipe, and meanwhile, the multi-degree-of-freedom welding robot 4 completes the spot welding process of the left end face of the second section of rectangular steel pipe and the steel plate 50.
After the steel upright post is subjected to the process, the steel upright post continues to move forward along the power conveying belt 2, the second section of rectangular steel pipe enters the last rotary welding positioner 1, the last rotary welding positioner 1 clamps the steel upright post to rotate, and the truss type welding machine 6 is utilized to complete full welding of the left end face of the second section of rectangular steel pipe and the steel plate 50, so that a whole set of process flow for automatically welding the steel upright post is completed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an automatic welding production line of steel stand, includes four at least spin welding machine of shifting (1), its characterized in that: four rotatory positioner (1) are arranged along the horizontal direction of production line interval in proper order, all are provided with power conveyer belt (2) of horizontal direction between every two adjacent rotatory positioner (1), first platform and last rotatory positioner (1) both sides all are equipped with power conveyer belt (2), be provided with truss-like plasma cutting machine (3) behind first rotatory positioner (1), be provided with vertical steel sheet conveyer (5) and multi freedom welding robot (4) behind second rotatory positioner (1), be provided with truss-like welding machine (6) behind third rotatory positioner (1).
2. The automatic welding production line of steel columns according to claim 1, characterized in that: rotatory positioner (1) includes base (11), base (11) bottom side is fixed subaerial, base (11) upside fixedly connected with round hole shape seat circle (111), hole shape seat circle (111) inner wall rotates connects inner circle (12) to can be at round hole shape seat circle (111) internal rotation (180) ° more, be equipped with four clamping mechanism (13) on inner circle (12), four clamping mechanism (13) evenly set up, every with the circumferencial direction along inner circle (12) inboard in rotatory positioner (1) all is equipped with unpowered conveyer belt (14).
3. The automatic welding production line of steel columns according to claim 2, characterized in that: clamping mechanism (13) include four curb plates (131), four curb plate (131) are along the even fixed connection in inner circle (12) one side of the circumferencial direction of inner circle (12), every all be equipped with the guiding hole on curb plate (131), every curb plate (131) one side equal fixed connection pneumatic cylinder (132), every the hydraulic stem of pneumatic cylinder (132) all passes guiding hole fixed connection splint (133), four splint (133) set up relatively.
4. The automatic welding production line of steel columns according to claim 2, characterized in that: the first rotary welding positioner (1) and the last rotary welding positioner (1) are arranged oppositely, and the middle two rotary welding positioner (1) are arranged oppositely.
5. The automatic welding production line of steel columns according to claim 2, characterized in that: the horizontal heights of the power conveyor (2) and the unpowered conveyor (14) of the production line before the vertical steel plate conveyor (5) are equal, the horizontal heights of the power conveyor (2) and the unpowered conveyor (14) of the production line after the vertical steel plate conveyor (5) are equal, and the horizontal height of the production line after the vertical steel plate conveyor (5) is lower than the horizontal height of the production line before the vertical steel plate conveyor (5).
6. The automatic welding production line of steel columns according to claim 1, characterized in that: the truss type plasma cutting machine (3) comprises a first truss (31), the bottom side of the first truss (31) is fixed on the ground, a first three-degree-of-freedom truss type mechanical arm (32) is installed on the first truss (31), and a cutting gun (33) of the plasma cutting machine is installed at the execution end of the first three-degree-of-freedom truss type mechanical arm (32).
7. The automatic welding production line of steel columns according to claim 1, characterized in that: the truss type welding machine (6) comprises a second truss (61), the bottom side of the second truss (61) is fixed on the ground, a second three-degree-of-freedom truss type manipulator (62) is installed on the second truss (61), and a welding gun (62) is installed at the execution end of the second three-degree-of-freedom truss type manipulator (62).
8. The automatic welding production line of steel columns according to claim 1, characterized in that: vertical steel sheet conveyer (5) are including support frame (51), support frame (51) bottom side is fixed subaerial, support frame (51) upside fixed connection steel sheet conveyer belt (52), the direction of delivery mutually perpendicular of steel sheet conveyer belt (52) and power conveyer belt (2), steel sheet conveyer belt (52) upside is equipped with steel sheet guiding mechanism (53), steel sheet conveyer belt (52) and steel sheet guiding mechanism (53) common extension to steel sheet welding frock (54).
9. The automatic welding production line of steel columns according to claim 8, characterized in that: the steel plate guide mechanism (53) comprises two guide plates (531), two guide plates (531) are arranged on the upper side of the steel plate conveying belt (52), two guide plates (531) are provided with guide grooves, each guide groove is provided with an unpowered sliding roller (532) which is connected with a plurality of vertical devices in a rotating mode between the groove walls of the upper side and the lower side of the guide groove, and a guide channel (533) is arranged between the guide plates (531).
10. The automatic welding production line of steel columns according to claim 8, characterized in that: steel sheet welding frock (54) include cylinder (541) of two vertical settings, two equal fixed connection in cylinder (541) is on support frame (51) bottom side, two common fixed connection locating plate (542) in piston rod upper end of cylinder (541), locating plate (542) upside is equipped with constant head tank (543), constant head tank (543) correspond the setting with direction passageway (533).
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| CN202110710196.3A CN113245680B (en) | 2021-06-25 | 2021-06-25 | Automatic welding production line for steel upright posts |
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| CN202110710196.3A CN113245680B (en) | 2021-06-25 | 2021-06-25 | Automatic welding production line for steel upright posts |
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| CN110614450A (en) * | 2019-09-02 | 2019-12-27 | 天津大学 | Cutting of building steel construction robot, transport, welding integration workstation |
| CN111438498A (en) * | 2020-05-07 | 2020-07-24 | 苏州光彩钢板仓有限公司 | Square tube column production line and production process |
| CN111761183A (en) * | 2020-07-01 | 2020-10-13 | 南通阳光焊割设备有限公司 | Stably-clamped numerical control plasma cutting machine and working method thereof |
| CN112620894A (en) * | 2020-12-08 | 2021-04-09 | 山东易林智能装备有限公司 | Automatic welding device and method for main chord member of standard knot of tower crane |
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