CN117086143A - Major-diameter thin-wall steel pipe rounding and straightening equipment and method - Google Patents
Major-diameter thin-wall steel pipe rounding and straightening equipment and method Download PDFInfo
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- CN117086143A CN117086143A CN202311220988.8A CN202311220988A CN117086143A CN 117086143 A CN117086143 A CN 117086143A CN 202311220988 A CN202311220988 A CN 202311220988A CN 117086143 A CN117086143 A CN 117086143A
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- steel pipe
- corrected
- correction module
- straightening
- diameter thin
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 130
- 239000010959 steel Substances 0.000 title claims abstract description 130
- 238000000034 method Methods 0.000 title claims description 19
- 238000012937 correction Methods 0.000 claims abstract description 63
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000003825 pressing Methods 0.000 claims abstract description 19
- 238000005096 rolling process Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 16
- LNSPFAOULBTYBI-UHFFFAOYSA-N [O].C#C Chemical group [O].C#C LNSPFAOULBTYBI-UHFFFAOYSA-N 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 12
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/14—Recontouring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/006—Feeding elongated articles, such as tubes, bars, or profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
A major diameter thin wall steel pipe is straightened and is equipped, includes: the portal frame is provided with a transverse supporting mechanism on the bottom supporting platform, is circularly arranged and is provided with first press rolls at intervals; the pressing mechanism is arranged at the lower side of the cross beam and is provided with a second press roller; the rolling correction mechanism is provided with an upper round correction module and a lower round correction module, the lower round correction module is arranged on the transverse supporting mechanism, and the upper round correction module is arranged on the lower round correction module through the jacking mechanism; the axial transmission unit is provided with a motor turbine assembly and is used for meshing with the outer teeth to drive the steel pipe to rotate; the heating device is arranged on the side support; the correcting traction rear cover is arranged at the tail end of the steel pipe and is used for traction through the traction mechanism, so that the steel pipe is driven to move on the axial transmission unit. The invention not only meets the different requirements of rounding and straightening, has extremely strong universality and interchangeability, but also has low cost, is easy to assemble and transport, can reduce construction period delay and waste of steel pipes, and is worthy of popularization and utilization in industry.
Description
Technical Field
The invention relates to the technical field of engineering construction machinery processing, in particular to a large-diameter thin-wall steel pipe rounding and straightening device and a straightening method.
Background
At present, medium-and large-diameter steel pipes used in domestic construction projects are generally classified into three categories according to diameter and manufacturing method: seamless steel pipes (DN 65-DN 150), spiral welded steel pipes (DN 200-DN 1000), steel plate coil welded plates (DN 500-DN 1000). According to GB/T14980-1994 large diameter electric welding steel pipe for low pressure fluid transportation, large diameter thin wall steel pipe is mainly used for transporting low pressure fluid such as water, sewage, coal gas, air, heating steam and other purposes.
The medium and large diameter steel pipes can reach the construction site only through a plurality of links such as carrying, logistics, storage and the like after the production of the steel mill is completed, and the links are mostly in the open air and are required to be stored, transported and allocated after reaching the construction project site. In these processes, plastic damage is caused to the roundness and straightness of the steel pipe due to transportation and storage of the large-diameter thin-wall steel pipe, stacking of the steel pipe in an open air environment (multi-layer stacking, compression of the lower layer, etc.), aging (heat treatment process that metal or alloy is subjected to solution treatment, is placed at a higher temperature or room temperature to keep its shape and size after being quenched from a high temperature or subjected to cold working deformation to a certain extent, and changes in performance with time), and the like. Meanwhile, collision in the logistics and transportation processes also tends to damage the opening of the steel pipe.
As is known, the usual spiral welded steel pipes (DN 200 to DN 1000), steel coil welded plates (DN 500 to DN 1000) are usually thin in wall and are so deformed in stacking and transportation that the steel pipes cannot be accurately butted when being butted with flanges in construction, resulting in a great amount of economic losses of construction period, materials and the like.
Therefore, the designer actively researches and improves the problems existing in the prior art by virtue of years of experience in the industry, and the large-diameter thin-wall steel tube rounding and straightening equipment and the straightening method are provided.
Disclosure of Invention
The invention provides a major diameter thin wall steel pipe rounding and straightening device, which aims at solving the defects that in the prior art, the roundness and straightness of the steel pipe are plastically damaged due to the reasons of transportation and storage of the conventional medium and large diameter steel pipe, the reasons of stacking and aging of the steel pipe in an open air environment and the like, and collision in the logistics and transportation processes also can damage the mouth of the steel pipe, so that a large amount of construction period, economic losses of materials and the like are caused.
The second purpose of the invention is to provide a correction method for straightening the circular correction of the large-diameter thin-wall steel pipe, aiming at the defects that in the prior art, the roundness and straightness of the steel pipe are plastically damaged due to the reasons of transportation and storage of the conventional medium-diameter and large-diameter steel pipe, and the reasons of stacking and aging of the steel pipe in an open air environment, and collision in the logistics and transportation processes also can damage the mouth of the steel pipe, so that a large amount of construction period, economic losses of materials and the like are caused.
To achieve the first object of the present invention, the present invention provides a large-diameter thin-wall steel pipe rounding and straightening apparatus, comprising:
the portal frame is characterized in that a transverse supporting mechanism is arranged on a bottom supporting platform of the portal frame, one side of the transverse supporting mechanism, which is different from the bottom supporting platform, is circularly arranged, and first press rollers are arranged at intervals along the circular edge;
the pressing mechanism is arranged at the lower side of the cross beam of the portal frame, a second press roller is arranged at one end, different from the cross beam, of the pressing mechanism, and the inner circumference formed by the second press roller and the inner circumference formed by the first press roller are positioned on the same cylindrical surface and are both the outer circumferences of the steel pipes to be corrected;
the rolling correction mechanism is provided with an upper circular correction module and a lower circular correction module which are separated by a jacking mechanism, the lower circular correction module is fixedly arranged on the transverse supporting mechanism through a fixing plate, a first accommodating space is formed between the lower circular correction module and the transverse supporting mechanism, the upper circular correction module is arranged on the lower circular correction module through supporting of the jacking mechanism, a second accommodating space is formed between the upper circular correction module and a second compression roller of the pressing mechanism, and the first accommodating space and the second accommodating space are circularly arranged and are used for accommodating steel pipes to be corrected;
the axial transmission unit is vertically arranged with the transverse supporting mechanism, and one end of the axial transmission unit, which is different from the transverse supporting mechanism, is provided with a motor turbine assembly which is used for meshing with an outer gear ring arranged on the steel pipe to be corrected, so as to drive the steel pipe to be corrected to rotate;
the heating devices are symmetrically arranged on the side supports of the portal frame and are positioned on the outer side of the steel pipe to be corrected;
the correcting traction rear cover is arranged at the tail end of the steel tube to be corrected, and the correcting traction rear cover is pulled through the traction mechanism, so that the steel tube to be corrected is driven to move on the axial transmission unit.
Optionally, the upper circular correction module is provided with a third press roller along an upper circle.
Optionally, the lower circular correction module is provided with a fourth compression roller along the lower circle, and the outer circumference formed by the third compression roller and the outer circumference formed by the fourth compression roller are positioned on the same cylindrical surface and are both the inner circumferences of the steel pipes to be corrected.
Optionally, the lifting mechanism is a jack.
Optionally, the jack further comprises a base and an adjusting rod movably arranged on the base.
Optionally, the heating device is an oxygen acetylene heating nozzle.
In order to achieve the second object of the present invention, the present invention provides a method for correcting and straightening a large-diameter thin-wall steel pipe, the method for correcting and straightening a large-diameter thin-wall steel pipe comprising:
step S1 is executed: selecting a matched rolling correction mechanism according to the pipe diameter of the steel pipe to be corrected;
step S2 is executed: hoisting the steel pipe to be corrected at the positions of the transverse supporting mechanism and the axial transmission unit;
step S3 is executed: installing and adjusting the rolling correction mechanism, so that a third compression roller of an upper round correction module of the rolling correction mechanism is abutted against the inner wall of the steel pipe to be corrected, a fourth compression roller of a lower round correction module of the rolling correction mechanism is abutted against the inner wall of the steel pipe to be corrected, and a first compression roller of the transverse support mechanism is abutted against the outer wall of the steel pipe to be corrected;
step S4 is executed: adjusting a pressing mechanism to enable a second pressing roller of the pressing mechanism to be abutted with the outer wall of the steel pipe to be corrected;
step S5 is executed: starting the heating device, driving an external gear on the steel pipe to be corrected to rotate through the motor turbine assembly, and further driving the steel pipe to be corrected to rotate to finish roundness correction;
step S6 is executed: the traction mechanism is used for traction of the traction rear cover at the tail end of the steel pipe to be corrected, so that the steel pipe to be corrected is driven to move on the axial transmission unit, and straightness correction is completed.
In summary, the large-diameter thin-wall steel pipe rounding and straightening equipment is a complete modularized solution, a complete device is adopted for rounding and straightening deformed large-diameter thin-wall steel pipes for the first time, each module can be adjusted according to the production requirement and the on-site production environment, the diameter and batch size requirements of the thin-wall steel pipes, fine adjustment can be made according to the diameter of the steel pipes to be corrected and the deformation degree of the steel pipes, the requirements of different rounding (diameter direction) straightening (axial direction) are met, the extremely high universality and the exchange capability are achieved, meanwhile, no special requirement is required for field voltage during use, the cost is low, the assembly and the transportation are easy, the construction period delay of building projects and the waste of the steel pipes can be reduced, and the method is worthy of popularization and utilization in industry.
Drawings
FIG. 1 is a front view of a major diameter thin wall steel tube rounding and straightening device of the present invention;
FIG. 2 is a rear view of the large-diameter thin-wall steel pipe rounding and straightening equipment of the invention;
FIG. 3 is a schematic diagram of an axial transmission unit of the large-diameter thin-wall steel pipe rounding and straightening equipment;
fig. 4 is a schematic diagram of a correcting traction rear cover structure of the correcting and straightening equipment for the large-diameter thin-wall steel pipe;
FIG. 5 is a flow chart of the method for straightening the large-diameter thin-wall steel tube.
Detailed Description
For a detailed description of the technical content, constructional features, achieved objects and effects of the present invention, the following detailed description will be given with reference to the accompanying drawings.
Referring to fig. 1, 2, 3 and 4, fig. 1 is a front view of the large-diameter thin-wall steel tube rounding and straightening device according to the present invention. Fig. 2 is a rear view of the large-diameter thin-wall steel pipe rounding and straightening equipment. Fig. 3 is a schematic diagram of an axial transmission unit of the large-diameter thin-wall steel pipe rounding and straightening device. Fig. 4 is a schematic diagram of a correcting traction rear cover structure of the correcting and straightening equipment for the large-diameter thin-wall steel pipe. The major diameter thin wall steel pipe is straightened and is equipped, includes:
the portal frame 1, a horizontal supporting mechanism 2 is arranged on a bottom supporting platform 11 of the portal frame 1, one side of the horizontal supporting mechanism 2, which is different from the bottom supporting platform 11, is circularly arranged, and first press rollers 21 are arranged at intervals along the circular edge;
the pressing mechanism 3 is arranged at the lower side of the cross beam 12 of the portal frame 1, a second press roller 31 is arranged at one end, different from the cross beam 12, of the pressing mechanism 3, and the inner circumference formed by the second press roller 31 and the inner circumference formed by the first press roller 21 are positioned on the same cylindrical surface and are both the outer circumferences of the steel pipes 4 to be corrected;
the rolling correction mechanism 5, the rolling correction mechanism 5 is provided with an upper circular correction module 51 and a lower circular correction module 52 which are separated by a jacking mechanism 50, the lower circular correction module 52 is fixedly arranged on the transverse supporting mechanism 2 through a fixing plate 6, a first accommodating space 53 is formed between the lower circular correction module 52 and the transverse supporting mechanism 2, the upper circular correction module 51 is supported and arranged on the lower circular correction module 52 through the jacking mechanism 50, a second accommodating space 54 is formed between the upper circular correction module 51 and the second compression roller 31 of the lower pressing mechanism 3, and the first accommodating space 53 and the second accommodating space 54 are circularly arranged and are used for accommodating the steel tube 4 to be corrected;
the axial transmission unit 7 is vertically arranged with the transverse supporting mechanism 2, and one end of the axial transmission unit 7, which is different from the transverse supporting mechanism 2, is provided with a motor turbine assembly 71 which is used for meshing with an outer gear ring 41 arranged on the steel pipe 4 to be corrected, so as to drive the steel pipe 4 to be corrected to rotate;
the heating devices 8 are symmetrically arranged on the side supports 12 of the portal frame 1 and are positioned on the outer side of the steel pipe 4 to be corrected;
the correcting traction rear cover 9 is arranged at the tail end of the steel pipe 4 to be corrected, and the correcting traction rear cover 9 is pulled through a traction mechanism (not shown), so that the steel pipe 4 to be corrected is driven to move on the axial transmission unit 7.
In order to reduce the friction resistance of the steel pipe 4 to be corrected during the roundness correction rotation, it is preferable that the upper round correction module 51 is provided with a third press roller 55 along an upper round shape, the lower round correction module 52 is provided with a fourth press roller 56 along a lower round shape, and the outer circumference formed by the third press roller 55 and the outer circumference formed by the fourth press roller 56 are located on the same cylindrical surface, and are both the inner circumferences of the steel pipe 4 to be corrected.
As a specific embodiment, the lifting mechanism 50 is preferably a jack, and the jack further includes a base 57 and an adjusting rod 58 movably disposed on the base 57. The heating device 8 is an oxygen acetylene heating nozzle.
In order to more intuitively disclose the technical scheme of the invention and highlight the beneficial effects of the invention, the large-diameter thin-wall steel pipe rounding and straightening equipment, the straightening method and the working principle are described by combining specific embodiments. In the specific embodiments, the specifications, dimensions, shapes, movement modes and the like of the functional components are only examples, and should not be construed as limiting the technical scheme of the invention.
Referring to fig. 5 in combination with fig. 1 to 4, fig. 5 is a flowchart illustrating a method for straightening a large-diameter thin-wall steel pipe according to the present invention. By way of non-limiting example, a large diameter thin wall steel tube rounding straightening process, such as DN 400-DN 1000, includes:
step S1 is executed: selecting a matched rolling correction mechanism 5 according to the pipe diameter of the steel pipe 4 to be corrected;
step S2 is executed: hoisting the steel pipe 4 to be corrected at the positions of the transverse supporting mechanism 2 and the axial transmission unit 7;
step S3 is executed: the rolling correction mechanism 5 is installed and adjusted, so that a third compression roller 53 of an upper round correction module 51 of the rolling correction mechanism 5 is abutted against the inner wall of the steel pipe 4 to be corrected, a fourth compression roller 54 of a lower round correction module 52 of the rolling correction mechanism 5 is abutted against the inner wall of the steel pipe 4 to be corrected, and a first compression roller 21 of the transverse supporting mechanism 2 is abutted against the outer wall of the steel pipe 4 to be corrected;
step S4 is executed: adjusting the pressing mechanism 3 so that a second pressing roller 31 of the pressing mechanism 3 is abutted against the outer wall of the steel pipe 4 to be corrected;
step S5 is executed: starting the heating device 8, driving the external gear 41 on the steel pipe 4 to be straightened to rotate through the motor turbine assembly 71, and further driving the steel pipe 4 to be straightened to rotate, so as to finish roundness straightening;
step S6 is executed: the traction mechanism pulls the correction traction rear cover 9 at the tail end of the steel pipe 4 to be corrected, and then drives the steel pipe 4 to be corrected to move on the axial transmission unit 7, so that the straightness correction is completed.
Obviously, the large-diameter thin-wall steel pipe rounding and straightening equipment is a complete modularized solution, a complete device is adopted for rounding and straightening deformed large-diameter thin-wall steel pipes for the first time, not only can each module be adjusted according to the production requirement and the on-site production environment and the diameter size, batch size requirement and the like of the thin-wall steel pipes, but also can be finely adjusted according to the diameter of the steel pipes to be rectified and the deformation degree of the steel pipes, thereby meeting the requirements of straightening (axial direction) of different rounding (diameter directions), having extremely strong universality and interchangeability, simultaneously having no special requirement on field voltage during use, having low cost, being easy to assemble and transport, reducing construction period delay and waste of the steel pipes, and being worthy of popularization and utilization in industry.
In summary, the large-diameter thin-wall steel pipe rounding and straightening equipment is a complete modularized solution, a complete device is adopted for rounding and straightening deformed large-diameter thin-wall steel pipes for the first time, each module can be adjusted according to the production requirement and the on-site production environment, the diameter and batch size requirements of the thin-wall steel pipes, fine adjustment can be made according to the diameter of the steel pipes to be corrected and the deformation degree of the steel pipes, the requirements of different rounding (diameter direction) straightening (axial direction) are met, the extremely high universality and the exchange capability are achieved, meanwhile, no special requirement is required for field voltage during use, the cost is low, the assembly and the transportation are easy, the construction period delay of building projects and the waste of the steel pipes can be reduced, and the method is worthy of popularization and utilization in industry.
It will be appreciated by those skilled in the art that various modifications and variations can be made to the invention without departing from the spirit or scope of the invention. Accordingly, the present invention is deemed to cover any modifications and variations, if they fall within the scope of the appended claims and their equivalents.
Claims (7)
1. The large-diameter thin-wall steel pipe rounding and straightening device is characterized by comprising:
the portal frame is characterized in that a transverse supporting mechanism is arranged on a bottom supporting platform of the portal frame, one side of the transverse supporting mechanism, which is different from the bottom supporting platform, is circularly arranged, and first press rollers are arranged at intervals along the circular edge;
the pressing mechanism is arranged at the lower side of the cross beam of the portal frame, a second press roller is arranged at one end, different from the cross beam, of the pressing mechanism, and the inner circumference formed by the second press roller and the inner circumference formed by the first press roller are positioned on the same cylindrical surface and are both the outer circumferences of the steel pipes to be corrected;
the rolling correction mechanism is provided with an upper circular correction module and a lower circular correction module which are separated by a jacking mechanism, the lower circular correction module is fixedly arranged on the transverse supporting mechanism through a fixing plate, a first accommodating space is formed between the lower circular correction module and the transverse supporting mechanism, the upper circular correction module is arranged on the lower circular correction module through supporting of the jacking mechanism, a second accommodating space is formed between the upper circular correction module and a second compression roller of the pressing mechanism, and the first accommodating space and the second accommodating space are circularly arranged and are used for accommodating steel pipes to be corrected;
the axial transmission unit is vertically arranged with the transverse supporting mechanism, and one end of the axial transmission unit, which is different from the transverse supporting mechanism, is provided with a motor turbine assembly which is used for meshing with an outer gear ring arranged on the steel pipe to be corrected, so as to drive the steel pipe to be corrected to rotate;
the heating devices are symmetrically arranged on the side supports of the portal frame and are positioned on the outer side of the steel pipe to be corrected;
the correcting traction rear cover is arranged at the tail end of the steel tube to be corrected, and the correcting traction rear cover is pulled through the traction mechanism, so that the steel tube to be corrected is driven to move on the axial transmission unit.
2. The apparatus for straightening and rounding large-diameter thin-walled steel pipes according to claim 1, wherein the upper round straightening module is provided with a third press roll along an upper round shape.
3. The device for straightening and round-correcting the large-diameter thin-wall steel pipe according to claim 2, wherein the lower round-shape correction module is provided with a fourth press roller along a lower round shape, and the outer circumference formed by the third press roller and the outer circumference formed by the fourth press roller are positioned on the same cylindrical surface and are the inner circumferences of the steel pipes to be corrected.
4. The apparatus for straightening and rounding large-diameter thin-walled steel pipes according to claim 1, wherein the lifting mechanism is a jack.
5. The apparatus for straightening a large-diameter thin-walled steel pipe according to claim 4, wherein the jack further comprises a base and an adjusting rod movably provided on the base.
6. The apparatus for rounding and straightening a large-diameter thin-walled steel pipe according to claim 1, wherein the heating device is an oxygen acetylene heating nozzle.
7. A method for straightening a large-diameter thin-walled steel pipe according to claim 1, comprising:
step S1 is executed: selecting a matched rolling correction mechanism according to the pipe diameter of the steel pipe to be corrected;
step S2 is executed: hoisting the steel pipe to be corrected at the positions of the transverse supporting mechanism and the axial transmission unit;
step S3 is executed: installing and adjusting the rolling correction mechanism, so that a third compression roller of an upper round correction module of the rolling correction mechanism is abutted against the inner wall of the steel pipe to be corrected, a fourth compression roller of a lower round correction module of the rolling correction mechanism is abutted against the inner wall of the steel pipe to be corrected, and a first compression roller of the transverse support mechanism is abutted against the outer wall of the steel pipe to be corrected;
step S4 is executed: adjusting a pressing mechanism to enable a second pressing roller of the pressing mechanism to be abutted with the outer wall of the steel pipe to be corrected;
step S5 is executed: starting the heating device, driving an external gear on the steel pipe to be corrected to rotate through the motor turbine assembly, and further driving the steel pipe to be corrected to rotate to finish roundness correction;
step S6 is executed: the traction mechanism is used for traction of the traction rear cover at the tail end of the steel pipe to be corrected, so that the steel pipe to be corrected is driven to move on the axial transmission unit, and straightness correction is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311220988.8A CN117086143A (en) | 2023-09-20 | 2023-09-20 | Major-diameter thin-wall steel pipe rounding and straightening equipment and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311220988.8A CN117086143A (en) | 2023-09-20 | 2023-09-20 | Major-diameter thin-wall steel pipe rounding and straightening equipment and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117086143A true CN117086143A (en) | 2023-11-21 |
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ID=88775091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311220988.8A Pending CN117086143A (en) | 2023-09-20 | 2023-09-20 | Major-diameter thin-wall steel pipe rounding and straightening equipment and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117086143A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117583424A (en) * | 2024-01-17 | 2024-02-23 | 广东林工工业装备有限公司 | Ovality adjustment tool for welding large flange of pressure vessel equipment |
| CN118681957A (en) * | 2024-08-23 | 2024-09-24 | 江苏威士智能装备有限公司 | Correction device for washing cage |
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2023
- 2023-09-20 CN CN202311220988.8A patent/CN117086143A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117583424A (en) * | 2024-01-17 | 2024-02-23 | 广东林工工业装备有限公司 | Ovality adjustment tool for welding large flange of pressure vessel equipment |
| CN117583424B (en) * | 2024-01-17 | 2024-03-29 | 广东林工工业装备有限公司 | Ovality adjustment tool for welding large flange of pressure vessel equipment |
| CN118681957A (en) * | 2024-08-23 | 2024-09-24 | 江苏威士智能装备有限公司 | Correction device for washing cage |
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