CN116160202A - In-plant manufacturing method for steel truss girder rod piece - Google Patents
In-plant manufacturing method for steel truss girder rod piece Download PDFInfo
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- CN116160202A CN116160202A CN202310292960.9A CN202310292960A CN116160202A CN 116160202 A CN116160202 A CN 116160202A CN 202310292960 A CN202310292960 A CN 202310292960A CN 116160202 A CN116160202 A CN 116160202A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 43
- 239000010959 steel Substances 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000003466 welding Methods 0.000 claims abstract description 70
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 21
- 230000000295 complement effect Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
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- 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
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Abstract
The invention discloses a manufacturing method in a steel truss girder rod factory, which comprises the following steps of: cutting a connecting plate and a plurality of cover plates from a raw steel plate; straightening a plurality of cover plates through a straightening machine; welding a plurality of cover plates to form a rod body; abutting the connecting plate against a first surface of the lever body; providing a welding auxiliary tool; connecting the first connecting part with the connecting plate, and connecting the second connecting part with the first surface; the motor is controlled to act through the control device so as to drive the first connecting part to rotate, so that an included angle between the connecting plate and the first surface is a preset welding angle; and welding the connecting plate and the rod piece main body to form the rod piece. The in-plant manufacturing method of the steel truss girder rod piece improves the welding precision of the rod piece.
Description
Technical Field
The invention relates to the technical field of steel truss girder construction, in particular to an in-plant manufacturing method of steel truss girder rod pieces.
Background
In order to reduce the overhead operation and accelerate the erection progress of the steel truss girder, the steel truss girder rod pieces are assembled in factories according to the pre-assembled steel truss girder rod pieces to form the required steel truss girder rod pieces, and the steel truss girder rod pieces can be delivered to a construction site in a factory. At present, when the steel truss girder rod pieces are spliced and manufactured in a factory, workers weld the rod pieces according to experience, and the welding precision of the rod pieces is poor.
Disclosure of Invention
The invention mainly aims to provide an in-plant manufacturing method of steel truss girder rod pieces, and aims to solve the problems that in the prior art, when the steel truss girder rod pieces are spliced and manufactured in a plant, workers weld the rod pieces according to experience, and the welding precision of the rod pieces is poor.
In order to achieve the above purpose, the invention provides a method for manufacturing steel truss girder rod in a factory, which is characterized by comprising the following steps:
cutting a connecting plate and a plurality of cover plates from a raw steel plate;
straightening a plurality of cover plates through a straightening machine;
welding a plurality of cover plates to form a rod body;
abutting the connecting plate against a first surface of the lever body;
providing a welding auxiliary tool, wherein the welding auxiliary tool comprises a connecting seat, a first connecting part, a second connecting part and a motor, the first connecting part and the second connecting part are arranged at two ends of the connecting seat, the first connecting part is rotatably arranged along a horizontally extending axis, and the motor is used for driving the first connecting part to rotate;
connecting the first connecting part with the connecting plate, and connecting the second connecting part with the first surface;
the motor is controlled to act through the control device so as to drive the first connecting part to rotate, so that an included angle between the connecting plate and the first surface is a preset welding angle;
and welding the connecting plate and the rod piece main body to form the rod piece.
Optionally, in the step of straightening the plurality of cover plates by a straightening machine, the straightening machine includes:
the mounting seat is provided with two clamping parts at two ends, and the two clamping parts are used for clamping two ends of the cover plate correspondingly;
the straightening assembly comprises a fixed plate and a pushing piece, the fixed plate is arranged on the mounting seat and is positioned between the two clamping parts, the pushing piece is arranged on the mounting seat and is arranged at intervals with the fixed plate so as to be spaced from the fixed plate to form a placing space for placing the cover plate, and the pushing piece is movably arranged along the direction close to the fixed plate so as to correspondingly push the cover plate in the placing space to be close to the fixed plate and straighten the cover plate; the method comprises the steps of,
the first driving piece is used for driving the pushing piece to move along the direction approaching to the fixed plate.
Optionally, the clamping portion comprises a clamping cylinder.
Optionally, the pushing piece is gradually protruded towards one side surface of the fixing plate from two ends to the middle part so as to form a pushing cambered surface.
Optionally, a moving seat is arranged on the mounting seat, and the moving seat is arranged between the two clamping parts and can be movably arranged along the connecting line direction of the two clamping parts;
the pushing piece is movably arranged on the movable seat along the direction approaching to the fixed plate;
the straightening machine further comprises a second driving piece, wherein the second driving piece is used for driving the movable seat to move along the connecting line direction of the two clamping parts.
Optionally, the first connection portion includes a first magnetic chuck, and the second connection portion includes a second magnetic chuck.
Optionally, the first connecting portion is provided with a rotation hole extending along the horizontal direction, the connecting seat is provided with a rotation shaft extending along the horizontal direction, and the rotation hole is sleeved on the rotation shaft, so that the first connecting portion is rotatable along the axis extending along the horizontal direction.
Optionally, the controlling device controls the motor to act so as to drive the first connecting portion to rotate, so that in the step of enabling the included angle between the connecting plate and the first surface to be a preset welding angle, the controlling device executes a program of a controlling method, and the controlling method includes the following steps:
acquiring a preset welding angle;
acquiring a first included angle between the current connecting plate and the horizontal plane, and acquiring a second included angle between the current first surface and the horizontal plane;
determining an angle adjustment strategy according to the preset welding angle, the first included angle and the second included angle;
and controlling the motor to act according to the angle adjustment strategy.
Optionally, the step of determining the angle adjustment strategy according to the preset welding angle, the first included angle and the second included angle includes:
calculating the angle sum value of the first included angle and the second included angle;
and determining an angle adjustment strategy according to the angle sum value and the preset welding angle.
Optionally, the step of determining an angle adjustment strategy according to the angle sum value and the preset welding angle includes:
calculating an angle complement of the angle sum value;
and calculating an angle difference value between the angle complementary angle and the preset welding angle, wherein the angle quantity of rotation of the first connecting part is the angle difference value.
In the in-plant manufacturing method of the steel truss girder rod piece, a connecting plate and a plurality of cover plates are cut from a raw material steel plate; straightening a plurality of cover plates through a straightening machine; welding a plurality of cover plates to form a rod body; abutting the connecting plate against a first surface of the lever body; providing a welding auxiliary tool, wherein the welding auxiliary tool comprises a connecting seat, a first connecting part, a second connecting part and a motor, the first connecting part and the second connecting part are arranged at two ends of the connecting seat, the first connecting part is rotatably arranged along a horizontally extending axis, and the motor is used for driving the first connecting part to rotate; connecting the first connecting part with the connecting plate, and connecting the second connecting part with the first surface; the motor is controlled to act through the control device so as to drive the first connecting part to rotate, so that an included angle between the connecting plate and the first surface is a preset welding angle; and welding the connecting plate and the rod piece main body to form the rod piece. According to the scheme, the plurality of cover plates are straightened through the straightening machine, so that the surface flatness of the formed rod piece main body is ensured; according to the scheme, the motor is controlled to act through the control device, so that the included angle between the connecting plate and the first surface is consistent with the preset welding angle, and the welding angle between the connecting plate and the rod piece main body is ensured; in conclusion, through the assurance of surface smoothness and the assurance of welding angle, the welding precision of member is effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of an embodiment of a method of in-plant fabrication of steel truss girder rods according to the present invention;
FIG. 2 is a schematic view of the structure of the rod member according to the present invention;
FIG. 3 is a schematic view of a straightening machine according to the present invention;
FIG. 4 is a schematic diagram of the use of the welding auxiliary tool of the present invention.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the |
| 100 | |
221 | |
| 110 | |
222 | Pushing |
| 111 | |
222a | Pushing cambered |
| 111a | A |
230 | |
| 120 | Connecting |
300 | Welding |
| 200 | Straightening |
310 | Connecting |
| 210 | |
320 | First connecting |
| 211 | Clamping |
330 | Second connecting |
| 220 | Straightening assembly |
The achievement of the object, functional characteristics and excellent effects of the present invention will be further described with reference to specific embodiments and drawings.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the case where a directional instruction is involved in the embodiment of the present invention, the directional instruction is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional instruction is changed accordingly.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
In order to reduce the overhead operation and accelerate the erection progress of the steel truss girder, the steel truss girder rod pieces are assembled in factories according to the pre-assembled steel truss girder rod pieces to form the required steel truss girder rod pieces, and the steel truss girder rod pieces can be delivered to a construction site in a factory. At present, when the steel truss girder rod pieces are spliced and manufactured in a factory, workers weld the rod pieces according to experience, and the welding precision of the rod pieces is poor.
In view of the foregoing, the present invention provides a method for manufacturing a steel truss girder rod in a factory, and fig. 1 is a schematic flow chart of an embodiment of the method for manufacturing a steel truss girder rod in a factory; FIG. 2 is a schematic view of the structure of the rod member according to the present invention; FIG. 3 is a schematic view of a straightening machine according to the present invention; FIG. 4 is a schematic diagram of the use of the welding auxiliary tool of the present invention.
Referring to fig. 1 to 4 in combination, the in-plant manufacturing method of the steel truss girder rod piece comprises the following steps:
step S10, cutting the connection plate 120 and the plurality of cover plates 111 from the raw steel plate.
Step S20, straightening the plurality of cover plates 111 by the straightening machine 200.
Step S30, welding a plurality of cover plates 111 to form a rod body 110.
Step S40, the connecting plate 120 is abutted against the first surface 111a of the lever body 110.
Step S50, providing a welding auxiliary tool 300, where the welding auxiliary tool 300 includes a connecting seat 310, a first connecting portion 320, a second connecting portion 330, and a motor, the first connecting portion 320 and the second connecting portion 330 are disposed at two ends of the connecting seat 310, the first connecting portion 320 is rotatably disposed along a horizontally extending axis, and the motor is used for driving the first connecting portion 320 to rotate.
Step S60, connecting the first connection portion 320 to the connection board 120, and connecting the second connection portion 330 to the first surface 111a.
In step S70, the control device controls the motor to act, so as to drive the first connecting portion 320 to rotate, so that the included angle between the connecting plate 120 and the first surface 111a is a preset welding angle.
Step S80, welding the connecting plate 120 and the rod body 110 to form the rod 100.
In the in-plant manufacturing method of the steel truss girder rod, a connecting plate 120 and a plurality of cover plates 111 are cut from a raw steel plate; straightening a plurality of the cover plates 111 by a straightening machine 200; welding a plurality of the cover plates 111 to form a lever body 110; abutting the connection plate 120 against the first surface 111a of the lever body 110; providing a welding auxiliary tool 300, wherein the welding auxiliary tool 300 comprises a connecting seat 310, a first connecting part 320, a second connecting part 330 and a motor, the first connecting part 320 and the second connecting part 330 are respectively arranged at two ends of the connecting seat 310, the first connecting part 320 is rotatably arranged along a horizontally extending axis, and the motor is used for driving the first connecting part 320 to rotate; connecting the first connection portion 320 to the connection board 120, and connecting the second connection portion 330 to the first surface 111a; the motor is controlled by the control device to act so as to drive the first connecting portion 320 to rotate, so that an included angle between the connecting plate 120 and the first surface 111a is a preset welding angle; the connection plate 120 is welded with the lever body 110 to form the lever 100. In the scheme, the plurality of cover plates 111 are straightened by the straightening machine 200, so that the surface flatness of the formed rod main body 110 is ensured; the motor is controlled by the control device to act, so that the included angle between the connecting plate 120 and the first surface 111a is consistent with a preset welding angle, and the welding angle between the connecting plate 120 and the rod main body 110 is ensured; in summary, the welding accuracy of the rod member 100 is effectively improved through the assurance of the surface flatness and the assurance of the welding angle.
Specifically, in step S20, referring to fig. 2 and 3, the straightening machine 200 includes a mounting seat 210, a straightening assembly 220, and a first driving member, two clamping portions 211 are respectively disposed at two ends of the mounting seat 210, the two clamping portions 211 are used for clamping two ends of the cover plate 111 correspondingly, the straightening assembly 220 includes a fixing plate 221 and a pushing member 222, the fixing plate 221 is disposed on the mounting seat 210 and between the two clamping portions 211, the pushing member 222 is disposed on the mounting seat 210 and is spaced from the fixing plate 221, so as to form a placement space for placing the cover plate 111 with the fixing plate 221, the pushing member 222 is movably disposed along a direction close to the fixing plate 221, so as to correspondingly place the cover plate 111 in the placement space close to the fixing plate 221, so as to straighten the cover plate 111, and the first driving member is used for driving the pushing member 222 to move along a direction close to the fixing plate 221. The specific use process of the straightening machine 200 is as follows: firstly, the cover plate 111 is placed in a placing space between the fixed plate 221 and the pushing piece 222, then two ends of the cover plate 111 are clamped on the two clamping parts 211, and then the pushing piece 222 is driven to move along the direction close to the fixed plate 221 by the first driving piece, so that part of the pushing cover plate 111 deforms along the direction close to the fixed plate 221, and the cover plate 111 is straightened. The straightening machine 200 can straighten the cover plate 111 through the matching of the straightening component 220 and the first driving piece, and has simple structure and easy operation.
Further, the clamping portion 211 includes a clamping cylinder, so that the clamping cylinder is used as the clamping portion 211, and the clamping force of the clamping cylinder is good, the clamping is stable, and the straightening effect of the cover plate 111 is improved.
Further, the pushing member 222 protrudes toward one side of the fixing plate 221 from two ends to the middle, so as to form a pushing cambered surface 222a. Thus, the pushing piece 222 pushes the cover plate 111 to be in pushing contact with the cover plate 111 through the pushing cambered surface 222a, so that the pushing piece and the cover plate are stable in contact, not easy to separate, and good in pushing effect.
The actual bending portion of the cover 111 is not fixed, and may be any portion of the cover 111 in the length direction, so in this embodiment of the present invention, the mounting base 210 is provided with a moving base 230, and the moving base 230 is disposed between the two clamping portions 211 and is movably disposed along the connecting line direction of the two clamping portions 211; the pushing member 222 is movably disposed on the movable seat 230 along a direction approaching the fixed plate 221; the straightening machine 200 further includes a second driving member, where the second driving member is configured to drive the moving seat 230 to move along the connecting line direction of the two clamping portions 211, so that, for different bending portions of the cover 111, the second driving member drives the moving seat 230 to move along the connecting line direction of the two clamping portions 211, thereby driving the pushing member 222 to move, so that the pushing member 222 is aligned with the bending portion of the cover 111, and the straightening effect of the cover 111 is ensured.
Specifically, referring to fig. 2 and 4, in the welding auxiliary tool 300, the first connecting portion 320 includes a first magnetic chuck, and the second connecting portion 330 includes a second magnetic chuck. The connection between the first connection portion 320 and the connection board 120 can be realized through the magnetic attraction of the first magnetic chuck and the connection between the second connection portion 330 and the first surface 111a can be realized through the magnetic attraction of the second magnetic chuck and the first surface 111a, and the connection mode is simple and the operation is convenient.
Specifically, the first connection portion 320 is provided with a rotation hole extending along a horizontal direction, the connection base 310 is provided with a rotation shaft extending along a horizontal direction, and the rotation hole is sleeved on the rotation shaft, so that the first connection portion 320 is rotatable along an axis extending along a horizontal direction, and the first connection portion 320 is rotatably connected with the connection base 310.
Specifically, in step S70, the control device executes a program of a control method including the steps of:
step S71, obtaining a preset welding angle.
Step S72, obtaining a first angle between the current connecting plate 120 and the horizontal plane, and obtaining a second angle between the current first surface 111a and the horizontal plane.
Step 73, determining an angle adjustment strategy according to the preset welding angle, the first included angle and the second included angle.
And step S74, controlling the motor to act according to the angle adjustment strategy.
In this embodiment, a preset welding angle is obtained, a first angle between the current connecting plate 120 and a horizontal plane is obtained, a second angle between the current first surface 111a and the horizontal plane is obtained, an angle adjustment strategy is determined according to the preset welding angle, the first angle and the second angle, and the motor action is controlled according to the angle adjustment strategy. In this way, by acquiring the preset welding angle, the angle adjustment strategy is adjusted, so that the included angle between the connecting plate 120 and the first surface 111a is ensured to be consistent with the preset welding angle.
Further, the step S73 includes:
step S731, calculating an angle sum of the first included angle and the second included angle.
Step S732, determining an angle adjustment strategy according to the angle sum value and the preset welding angle.
In this scheme, calculate the angle sum value of first contained angle with the second contained angle, according to angle sum value with predetermine welding angle and confirm the angle adjustment tactics, so, the angle adjustment tactics of confirming is reasonable, does benefit to and guarantees that the contained angle of connecting plate 120 and first surface 111a is unanimous with predetermineeing the welding angle size.
Further, the step S732 includes:
step S732a, calculating an angle complement of the angle sum value.
Step S732b, calculating an angle difference between the angle complementary angle and the preset welding angle, where the angle of rotation of the first connection portion 320 is the angle difference.
In this solution, an angle complementary angle of the angle sum value is calculated, an angle difference between the angle complementary angle and the preset welding angle is calculated, and the angle of rotation of the first connection portion 320 is the angle difference. Thus, when the first connecting portion 320 rotates by an angle equal to the angle difference, the included angle between the connecting plate 120 and the first surface 111a is the preset welding angle.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all equivalent structures made by the description of the present invention and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the invention.
Claims (10)
1. The in-plant manufacturing method of the steel truss girder rod piece is characterized by comprising the following steps of:
cutting a connecting plate and a plurality of cover plates from a raw steel plate;
straightening a plurality of cover plates through a straightening machine;
welding a plurality of cover plates to form a rod body;
abutting the connecting plate against a first surface of the lever body;
providing a welding auxiliary tool, wherein the welding auxiliary tool comprises a connecting seat, a first connecting part, a second connecting part and a motor, the first connecting part and the second connecting part are arranged at two ends of the connecting seat, the first connecting part is rotatably arranged along a horizontally extending axis, and the motor is used for driving the first connecting part to rotate;
connecting the first connecting part with the connecting plate, and connecting the second connecting part with the first surface;
the motor is controlled to act through the control device so as to drive the first connecting part to rotate, so that an included angle between the connecting plate and the first surface is a preset welding angle;
and welding the connecting plate and the rod piece main body to form the rod piece.
2. The method of in-plant fabrication of steel truss girder elements of claim 1, wherein in the step of straightening the plurality of cap plates by means of a straightening machine, the straightening machine comprises:
the mounting seat is provided with two clamping parts at two ends, and the two clamping parts are used for clamping two ends of the cover plate correspondingly;
the straightening assembly comprises a fixed plate and a pushing piece, the fixed plate is arranged on the mounting seat and is positioned between the two clamping parts, the pushing piece is arranged on the mounting seat and is arranged at intervals with the fixed plate so as to be spaced from the fixed plate to form a placing space for placing the cover plate, and the pushing piece is movably arranged along the direction close to the fixed plate so as to correspondingly push the cover plate in the placing space to be close to the fixed plate and straighten the cover plate; the method comprises the steps of,
the first driving piece is used for driving the pushing piece to move along the direction approaching to the fixed plate.
3. The method of in-plant fabrication of steel truss girder rods of claim 2 wherein the clamping section comprises a clamping cylinder.
4. The method of in-plant fabrication of steel truss girder rods as claimed in claim 2, wherein the pushing members are gradually protruded from both ends toward the middle of one side of the fixing plate to form a pushing cambered surface.
5. The method for manufacturing steel truss girder rod in a factory according to claim 2, wherein the mounting seat is provided with a movable seat, and the movable seat is arranged between the two clamping parts and can be movably arranged along the connecting line direction of the two clamping parts;
the pushing piece is movably arranged on the movable seat along the direction approaching to the fixed plate;
the straightening machine further comprises a second driving piece, wherein the second driving piece is used for driving the movable seat to move along the connecting line direction of the two clamping parts.
6. The method of in-plant fabrication of steel truss girder rods of claim 1 wherein the first connection section comprises a first magnetic chuck and the second connection section comprises a second magnetic chuck.
7. The method of in-plant fabrication of steel truss girder rods as claimed in claim 1, wherein the first connection part is provided with a rotation hole extending horizontally, the connection seat is provided with a rotation shaft extending horizontally, and the rotation hole is sleeved on the rotation shaft, so that the first connection part can rotate along an axis extending horizontally.
8. The method for manufacturing steel truss girder rod in-plant as claimed in claim 1, wherein the controlling means controls the motor to act so as to drive the first connecting portion to rotate, so that the connecting plate and the first surface have an included angle of a preset welding angle, and the controlling means executes a program of a controlling method, the controlling method comprising the steps of:
acquiring a preset welding angle;
acquiring a first included angle between the current connecting plate and the horizontal plane, and acquiring a second included angle between the current first surface and the horizontal plane;
determining an angle adjustment strategy according to the preset welding angle, the first included angle and the second included angle;
and controlling the motor to act according to the angle adjustment strategy.
9. The method of in-plant fabrication of steel truss girder rods of claim 8, wherein the step of determining an angle adjustment strategy based on the preset welding angle, the first included angle, and the second included angle comprises:
calculating the angle sum value of the first included angle and the second included angle;
and determining an angle adjustment strategy according to the angle sum value and the preset welding angle.
10. The method of in-plant fabrication of steel truss girder rods of claim 9, wherein the step of determining an angle adjustment strategy based on the angle sum value and the preset welding angle comprises:
calculating an angle complement of the angle sum value;
and calculating an angle difference value between the angle complementary angle and the preset welding angle, wherein the angle quantity of rotation of the first connecting part is the angle difference value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310292960.9A CN116160202A (en) | 2023-03-23 | 2023-03-23 | In-plant manufacturing method for steel truss girder rod piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310292960.9A CN116160202A (en) | 2023-03-23 | 2023-03-23 | In-plant manufacturing method for steel truss girder rod piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116160202A true CN116160202A (en) | 2023-05-26 |
Family
ID=86416523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310292960.9A Pending CN116160202A (en) | 2023-03-23 | 2023-03-23 | In-plant manufacturing method for steel truss girder rod piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116160202A (en) |
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2023
- 2023-03-23 CN CN202310292960.9A patent/CN116160202A/en active Pending
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