Steel pipe finishing device

Abstract

The invention relates to the technical field of wind tower frame production auxiliary equipment, and provides a steel pipe finishing device which comprises a base frame, and a transmission assembly, a rounding assembly and a conveying assembly which are sequentially arranged on the base frame. The conveying assembly is used for driving steel pipes to be conveyed in the arrangement direction of the base frame. The conveying assembly is used for supporting the steel pipes and conveying the steel pipes downwards. The rounding assembly comprises two extruding assemblies arranged in a spaced mode and a rotary correcting unit arranged on the extruding assemblies, and a plurality of correcting sticks are arranged on the rotary correcting unit. The extrusion assembly comprises two oppositely-arranged extrusion plates, and the extrusion plates are driven to move in the width direction of the base frame so as to be close to or away from the steel pipe. A plurality of correcting stick circular shafts are evenly distributed on the outer side of the steel pipe, and correcting sticks are driven to rotate relative to the steel pipe. According to the method, the ovality and the straightness of the steel pipe are finished at the same time, the finishing effect of the steel pipe is improved, the ovality requirement and the straightness requirement of the wind tower frame for the steel pipe are effectively guaranteed, the safety of the wind tower frame is improved, and the service life of the wind tower frame is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of auxiliary equipment for wind tower production, and in particular to a steel pipe finishing device. Background Art

[0002] Due to the wind energy industry's demanding requirements for structural precision, strength, and service reliability, the steel pipes used in wind tower girders must undergo secondary finishing. First, the alternating wind loads and unit vibrations experienced during wind pressure operation require the steel pipes to exhibit strict geometric consistency, such as an ovality requirement of ≤0.3%. Second, because the raw steel pipes exhibit defects such as localized bending after hot rolling or cold drawing, direct use can lead to unbalanced stress distribution in the tower and accelerate fatigue crack initiation. Hot finishing improves straightness and eliminates the risk of resonance under dynamic operating conditions.

[0003] In addition, prestressed wind towers require high-strength steel strands to be precisely laid out on the inner wall of the steel pipe. If the curvature of the pipe wall is discontinuous, it will cause stress concentration between the anchor and the pipe wall, reducing the efficiency of prestress transmission.

[0004] Therefore, in the production of wind tower trusses, the steel pipes must first be finished. However, in existing technologies, this process involves using a horizontal truck to transport the material into the space between the upper and lower rams, placing flat iron pads on the steel pipes, and then driving the upper and lower rams to perform extrusion and correction. This method is a semi-mechanized operation, with high manual intervention and inconsistent process connections, resulting in production efficiency that is difficult to meet industrial requirements.

[0005] Furthermore, the iron plate extrusion method lacks quantitative control and cannot guarantee the uniformity of the curvature radius, affecting the fit of the subsequent prestressed reinforcement. Localized stress concentration can also lead to sharp corners or depressions on the steel pipe surface, disrupting structural continuity and affecting fatigue resistance. Furthermore, the iron plate extrusion method relies on operational experience, which can easily lead to excessive wall thickness deviations, violating the technical specifications for steel pipes used in wind turbine towers. Summary of the Invention

[0006] In view of this, the present invention aims to provide a steel pipe finishing device to improve the finishing effect and effectively ensure the ovality and straightness requirements of the steel pipe.

[0007] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0008] A steel pipe finishing device comprises a base frame, a transmission assembly, a rounding assembly, and a conveying assembly sequentially arranged on the base frame;

[0009] The transmission assembly is used to drive the steel pipe to be transmitted along the arrangement direction of the base frame, and the conveying assembly is used to support the steel pipe and convey it downward;

[0010] The rounding assembly includes two extrusion assemblies spaced apart from each other, and a rotation correction unit provided on the extrusion assemblies, wherein the rotation correction unit is provided with a plurality of correction rods;

[0011] The extrusion assembly includes two extrusion plates arranged opposite to each other, and the extrusion plates are driven to move along the width direction of the base frame to approach or move away from the steel pipe;

[0012] The circular shafts of the plurality of correction rods are evenly distributed on the outside of the steel pipe, and the correction rods are driven to rotate relative to the steel pipe.

[0013] Furthermore, the base frame includes a front frame body, an intermediate frame base and a rear frame body;

[0014] The intermediate frame includes a bottom plate, guard plates arranged on both sides of the bottom plate, and a top plate arranged on the upper part of the guard plates;

[0015] Support frames are provided on both the top plate and the bottom plate, and the support frames are used to limit the linear displacement of the rotation correction unit.

[0016] Furthermore, the extrusion assembly further comprises a first driving portion fixed to the inner wall of the guard plate, a power output shaft of the first driving portion is connected to an arc-shaped mounting plate, and the extrusion plate is fixed to the mounting plate;

[0017] An extrusion space is formed between the two extrusion plates, and the steel pipe is trimmed for ovality through the extrusion space.

[0018] Furthermore, the upper and lower ends of the extrusion plate are connected to parallel plates, a joint bearing is provided in the mounting plate, and the power output shaft of the first driving part is inserted into the joint bearing;

[0019] A straightness measuring device is provided on the support frame. Both the bottom plate and the top plate are provided with abutment components extending toward the parallel plates. The abutment components include a second driving portion and an abutment plate. The abutment plate is connected to the power output end of the second driving portion, and the abutment plate is driven to abut against the parallel plates.

[0020] Furthermore, the support frame includes an upper frame body provided on the top plate, and a lower frame body provided on the bottom plate and protruding upward;

[0021] The rotary correction unit includes a rotating ring arranged between the upper frame and the lower frame, and a driving mechanism arranged in the rotating ring, and the driving mechanism drives several of the correction rods to abut against the steel pipe at the same time; the rotating ring is driven to rotate between the upper frame and the lower frame.

[0022] Furthermore, the driving mechanism includes a turntable pivotally connected to the rotating ring, and a slider slidably connected to the turntable, and the correction rod is pivotally connected to the slider;

[0023] The turntable is provided with a plurality of arc-shaped grooves evenly distributed around the circumference, and the arc-shaped grooves are inclined along the radial direction of the turntable;

[0024] A circumvention hole for circumventing the steel pipe is provided in the middle of the turntable, and the steel pipe passes through the circumvention hole.

[0025] Furthermore, the driving mechanism further comprises a positioning block fixedly mounted on the rotating ring, the positioning block being provided with a plurality of open slots arranged along its own radial direction, a through hole being provided in the middle of the positioning block, the open slots being connected to the through hole, and the diameter of the through hole being larger than that of the steel pipe;

[0026] The slider includes a block and a convex shaft protruding from the lower end of the block, the convex shaft is arranged in the arc groove, the block is arranged in the open groove, and the correction rod is arranged along the thickness direction of the positioning block and is arranged on the side of the block close to the steel pipe.

[0027] Furthermore, the rotating ring is connected to a third driving unit, the turntable is provided with an upwardly protruding vertical shaft, a crank arm is sleeved on the vertical shaft, and the power output end of the third driving unit is pivotally connected to the crank arm;

[0028] The curved arm is provided with an arc-shaped sliding groove, and the vertical shaft is passed through the arc-shaped sliding groove;

[0029] When the third driving part drives the crank to move, the vertical shaft slides along the arc-shaped sliding groove, and the turntable rotates relative to the rotating ring to drive the correction rod to abut against or move away from the steel pipe.

[0030] Furthermore, an outer gear ring is sleeved on the outer side of the positioning block, and a worm is provided on the base frame along its width direction. The worm is engaged with the outer gear ring for transmission, and one end of the worm is connected to a fourth drive part, and the fourth drive part is connected to the outer side of the guard plate.

[0031] Furthermore, the transmission assembly includes a plurality of transmission rods pivotally connected to the front frame, and a guide rod provided above the front frame, wherein the two rows of guide rods are arranged in an eight-shaped pattern, close to one end of the extrusion assembly, and the distance between the two rows of guide rods is the smallest;

[0032] The front frame is also provided with a fifth driving part, and the fifth driving part is driven by one of the transmission rod chains and two adjacent transmission rod chains.

[0033] Compared with the prior art, the present invention has the following advantages:

[0034] The steel pipe finishing device described in the present invention, by arranging a conveying assembly and a transmission assembly at both ends of the rounding assembly, can finish the steel pipe in sections, and transmit the steel pipe in sections according to the transmission distance, thereby realizing automated steel pipe trimming and avoiding the use of semi-automatic conveying and lifting tools in the prior art. At the same time, extrusion assemblies are also provided on both sides of the rotary correction unit. The extrusion assemblies can achieve the ovality trimming of the steel pipe. Multiple correction rollers roll the steel pipe simultaneously, not only correcting the straightness of the steel pipe, but also simultaneously trimming the ovality and straightness of the steel pipe, thereby improving the steel pipe finishing processing effect, effectively ensuring the ovality and straightness requirements of the wind tower for the steel pipe, and improving the safety and service life of the wind tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0036] Figure 1 It is a front view schematic diagram of the steel pipe finishing device according to an embodiment of the present invention;

[0037] Figure 2 This is a schematic top view of the steel pipe finishing device according to an embodiment of the present invention without the abutment assembly and the top plate;

[0038] Figure 3 This is a schematic diagram of the connection between the extrusion assembly and the abutment assembly according to an embodiment of the present invention;

[0039] Figure 4 A schematic perspective diagram of a rotation correction unit according to an embodiment of the present invention from a first viewing angle;

[0040] Figure 5 FIG. 1 is a perspective schematic diagram of a rotation correction unit according to an embodiment of the present invention from a second viewing angle.

[0041] Description of reference numerals:

[0042] 1. Base frame; 2. Transmission assembly; 3. Rounding assembly; 4. Conveying assembly; 5. Upper frame; 6. Lower frame;

[0043] 101. Front frame; 102. Middle frame; 103. Rear frame;

[0044] 201, transmission rod; 202, guide rod; 203, fifth driving unit;

[0045] 301, extrusion assembly; 302, rotation correction unit; 303, abutment assembly; 304, third drive unit; 305, outer ring gear; 306, worm; 307, fourth drive unit; 308, crank arm; 309, vertical shaft;

[0046] 1021, bottom plate; 1022, guard plate; 1023, top plate;

[0047] 3011, extrusion plate; 3012, first driving unit; 3013, mounting plate; 3014, extrusion space; 3015, parallel plate; 3016, spherical bearing; 3017, straightness measuring device;

[0048] 3021, rotating ring; 3022, turntable; 3023, slider; 3024, positioning block; 3025, correction rod;

[0049] 3031. Second driving unit; 3032. Abutting plate;

[0050] 30221, arc groove; 30222, avoidance hole;

[0051] 30231, block; 30232, convex shaft;

[0052] 30241, open slot; 30242, through hole. DETAILED DESCRIPTION

[0053] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other.

[0054] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," and "back" and other terms indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] Furthermore, in the description of the present invention, unless otherwise expressly defined, the terms "mounted," "connected," "connect," and "connector" should be interpreted broadly. For example, these terms may refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will appreciate the specific meanings of these terms in the present invention based on the specific circumstances.

[0056] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0057] This embodiment relates to a steel pipe finishing device, which is as follows: Figures 1 to 2As shown, the steel pipe finishing device includes a base frame 1, a transmission component 2, a rounding component 3, and a conveying component 4 arranged on the base frame 1 in sequence. The transmission component 2 is used to drive the steel pipe to be transmitted along the arrangement direction of the base frame 1, and the conveying component 4 is used to support the steel pipe and convey it downward. The rounding component 3 includes two extrusion components 301 arranged at intervals, and a rotary correction unit 302 arranged on the extrusion component 301, and a plurality of correction rods 3025 are provided on the rotary correction unit 302. The extrusion component 301 includes two oppositely arranged extrusion plates 3011, and the extrusion plates 3011 are driven to move along the width direction of the base frame 1 to approach or move away from the steel pipe. The circular axes of the plurality of correction rods 3025 are evenly distributed on the outside of the steel pipe, and the correction rods 3025 are driven to rotate relative to the steel pipe.

[0058] Through the above design, the steel pipe finishing device of this embodiment is provided with a conveying component 4 and a transmission component 2 at both ends of the rounding component 3, which can make the steel pipe be finished section by section and transmitted section by section according to the transmission distance, thereby realizing automatic trimming of the steel pipe and avoiding the use of semi-automatic conveying and lifting tools in the prior art. At the same time, an extrusion component 301 is also provided on both sides of the rotary correction unit 302. The extrusion component 301 can realize the trimming of the ovality of the steel pipe. Multiple correction rods 3025 roll the steel pipe at the same time, not only correcting the straightness of the steel pipe, but also trimming the ovality and straightness of the steel pipe at the same time, thereby improving the finishing effect of the steel pipe, effectively ensuring the ovality and straightness requirements of the wind tower for the steel pipe, and improving the safety and service life of the wind tower.

[0059] Based on the above overall introduction, an exemplary structure of the steel pipe finishing device of this embodiment is as follows: Figures 1 to 2 As shown, the base frame 1 is a rectangular long frame body, which is composed of rectangular steel pipes welded together. The base frame 1 can be connected to the steel pipe production line of the wind tower frame as one of the processes of the production line to realize automated production.

[0060] As a preferred embodiment, Figures 1 to 2 As shown, the base frame 1 includes a front frame body 101, an intermediate frame base 102, and a rear frame body 103. The intermediate frame base 102 includes a bottom plate 1021, guard plates 1022 disposed on either side of the bottom plate 1021, and a top plate 1023 disposed above the guard plates 1022. Both the top plate 1023 and the bottom plate 1021 are provided with support frames that are used to limit the linear displacement of the rotation correction unit 302. The bottom plate 1021, top plate 1023, and guard plates 1022 are welded or bolted together to form a rectangular frame structure, providing installation space for the rounding assembly 3. The steel pipe is conveyed through the space within the rectangular frame.

[0061] like Figure 1 and Figure 2As shown, the conveying assembly 4 of this embodiment includes a plurality of rotating rollers pivotally connected to the rear frame 103 , and bearing seats are provided at both ends of the rotating rollers, and the bearing seats are fixedly connected to the side walls of the rear frame 103 .

[0062] Furthermore, if Figure 3 As shown, the extrusion assembly 301 also includes a first drive unit 3012 fixed to the inner wall of the guard plate 1022. The power output shaft of the first drive unit 3012 is connected to an arc-shaped mounting plate 3013, and the extrusion plate 3011 is fixed to the mounting plate 3013. The two extrusion plates 3011 define an extrusion space 3014, through which the steel pipe is trimmed for ovality. The first drive unit 3012 is a telescopic cylinder or hydraulic cylinder, and the mounting plate 3013 is a semicircular sheet structure with a diameter that matches the outer diameter of the steel pipe.

[0063] Still Figure 3 As shown, the upper and lower ends of the extrusion plate 3011 are further connected to parallel plates 3015, and a joint bearing 3016 is provided in the mounting plate 3013, and the power output shaft of the first driving part 3012 is inserted into the joint bearing 3016. Figure 1 As shown, a straightness measurer 3017 is provided on the support frame, and an abutment assembly 303 extending toward the parallel plate 3015 is provided on the bottom plate 1021 and the top plate 1023. The abutment assembly 303 includes a second driving portion 3031 and an abutment plate 3032. The abutment plate 3032 is connected to the power output end of the second driving portion 3031, and the abutment plate 3032 is driven to abut against the parallel plate 3015.

[0064] In a specific embodiment, the second drive unit 3031 utilizes a telescopic cylinder or hydraulic cylinder. The abutment plate 3032 is positioned along the width of the base frame 1, its length matching the combined length of the two parallel plates 3015. The straightness meter 3017 utilizes a grating. The spherical bearing 3016 provides damping to prevent the mounting plate 3013 from twisting and misaligning during extrusion. In this embodiment, the mounting plate 3013 is bolted to the pressure plate. This facilitates the replacement of extrusion plates 3011 of varying diameters when finishing steel pipes of varying specifications, thereby enhancing the applicability of the steel pipe finishing device.

[0065] With such an arrangement, if the ovality of the steel pipe is large, the extrusion plate 3011 will rotate when it abuts the steel pipe, and the parallel plate 3015 cannot be guaranteed to be parallel to the base plate 1021. The straightness meter 3017 can detect the offset of the parallel plate 3015. At this time, the pressure of the extrusion plate 3011 is adjusted, and the abutment plate 3032 is driven by the second drive part 3031 to squeeze the parallel plate 3015 to correct the parallel plate 3015. The two abutment plates 3032 and the two extrusion plates 3011 form an ovality correction for the steel pipe, thereby effectively ensuring the ovality finishing effect of the steel pipe and improving the quality of the steel pipe.

[0066] like Figure 1 As shown, the support frame includes an upper frame body 5 provided on the top plate 1023, and a lower frame body 6 provided on the bottom plate 1021 and protruding upward. The upper frame body 5 of this embodiment is a curved block body 30231 structure, the upper end of which is affixed to the top plate 1023 and fixed to the top plate 1023 by bolts. The ends of the upper frame body 5 are connected to two guard plates 1022. The curved portion of the upper frame body 5 is adapted to the rotating ring 3021 described below. In order to limit the displacement of the rotating ring 3021 in the thickness direction, the upper frame body 5 is also provided with protrusions located on both sides of the rotating ring 3021. Self-lubricating bearings are provided between the protrusions and the curved portion and the rotating ring 3021 to improve wear resistance and reduce friction.

[0067] Combine Figures 4 and 5 The rotary correction unit 302 includes a rotating ring 3021 arranged between the upper frame 5 and the lower frame 6, and a driving mechanism arranged in the rotating ring 3021. The driving mechanism drives several correction rods 3025 to abut against the steel pipe at the same time, and the rotating ring 3021 is driven to rotate between the upper frame 5 and the lower frame 6.

[0068] Further, as Figures 4 and 5 As shown, the driving mechanism includes a turntable 3022 pivotally connected to the rotating ring 3021, and a slider 3023 slidingly connected to the turntable 3022, the correction rod 3025 is pivotally connected to the slider 3023, and the turntable 3022 is provided with a plurality of arc grooves 30221 evenly distributed around the circumference, and the arc grooves 30221 are inclined along the radial direction of the turntable 3022. A avoidance hole 30222 for avoiding the steel pipe is provided in the middle of the turntable 3022, and the steel pipe passes through the avoidance hole 30222.

[0069] Preferably, if Figure 4 and Figure 5 As shown, the drive mechanism also includes a positioning block 3024 fixedly mounted on the rotating ring 3021. The positioning block 3024 is provided with a plurality of radially extending open slots 30241. A through hole 30242 is provided in the center of the positioning block 3024, communicating with the open slots 30241. The diameter of the through hole 30242 is larger than that of the steel pipe. The slider 3023 includes a block body 30231 and a protruding shaft 30232 protruding from the lower end of the block body 30231. The protruding shaft 30232 is disposed within the arcuate slot 30221, and the block body 30231 is disposed within the open slot 30241. The correction rod 3025 is disposed along the thickness direction of the positioning block 3024 and is located on the side of the block body 30231 closest to the steel pipe.

[0070] Furthermore, the rotating ring 3021 is connected to the third drive unit 304. The turntable 3022 is equipped with an upwardly protruding vertical shaft 309, which is sleeved with a crank arm 308. The power output end of the third drive unit 304 is pivotally connected to the crank arm 308. The crank arm 308 is provided with an arc-shaped slot, into which the vertical shaft 309 passes. When the third drive unit 304 drives the crank, the vertical shaft 309 slides along the slot, causing the turntable 3022 to rotate relative to the rotating ring 3021, driving the straightening rod 3025 to abut or move away from the steel pipe. The third drive unit 304 utilizes a telescopic cylinder, the size of which is calculated based on the sliding distance of the slider 3023.

[0071] In order to rotate the rounding component 3 and improve the trimming effect of the steel pipe, an outer ring gear 305 is also sleeved on the outside of the positioning block 3024, and a worm 306 is arranged along its width direction on the base frame 1. The worm 306 is engaged with the outer ring gear 305 for transmission, and one end of the worm 306 is connected to a fourth driving part 307, which adopts a servo motor.

[0072] like Figure 4 and Figure 5 As shown, the third drive unit 304 rotates the turntable 3022 by a predetermined angle. The cam 30232 then slides along the arcuate slot 30221 toward the center, causing the block 30231 to move within the open slot 30241, bringing the straightening rods 3025 closer to the steel pipe and into contact with it. Simultaneously, the fourth drive unit 307 is activated, causing the outer ring gear 305 to rotate, driving the rotating ring 3021 as well. The four straightening rods 3025 correct the straightness of this section of steel pipe.

[0073] In this embodiment, an extrusion assembly 301 is positioned at the front end of the rounding assembly 3. Straightness correction is performed after the ovality of the steel pipe has been corrected. This prevents the rotating ring 3021 from vibrating during rotation due to excessive ovality, which could affect the straightness correction effect. To improve the straightness correction efficiency, the height of the correction rod 3025 can be adjusted according to the process design.

[0074] Through the above-mentioned arrangement, the extrusion plate 3011 is arc-shaped, and the correction rod 3025 is tangent to the arc of the steel pipe, thereby avoiding defects such as the appearance of sharp corners or depressions on the surface of the steel pipe during the correction of the outer surface of the steel pipe due to local stress concentration caused by adding a flat pad in the prior art, thereby destroying the structural continuity and improving the fatigue resistance of the steel pipe.

[0075] Preferably, if Figure 1 and Figure 2As shown, the transmission assembly 2 includes a plurality of transmission rods 201 pivotally connected to the front frame 101, and a guide rod 202 provided above the front frame 101. The two rows of guide rods 202 are arranged in an eight-shaped shape, close to one end of the extrusion assembly 301, and the spacing between the two rows of guide rods 202 is the smallest. A fifth driving part 203 is also provided on the front frame 101. The fifth driving part 203 is chain-driven with one of the transmission rods 201, and two adjacent transmission rods 201 are chain-driven.

[0076] This embodiment positions the steel pipe at the center of the base frame 1 by setting a guide rod 202, providing an accurate position basis for the subsequent extrusion component 301 and rounding component 3. Driven by the fifth drive unit 203, the steel pipe can be continuously transported, realizing automated production and reducing labor input costs.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steel pipe finishing device, characterized in that: It comprises a base frame (1), a transmission component (2), a rounding component (3), and a conveying component (4) which are sequentially arranged on the base frame (1); The transmission component (2) is used to drive the steel pipe to be transmitted along the arrangement direction of the base frame (1), and the conveying component (4) is used to support the steel pipe and convey it downward; The rounding component (3) comprises two extrusion components (301) arranged at intervals, and a rotation correction unit (302) provided on the extrusion component (301), wherein the rotation correction unit (302) is provided with a plurality of correction rods (3025); The extrusion assembly (301) comprises two extrusion plates (3011) arranged opposite to each other, and the extrusion plates (3011) are driven to move along the width direction of the base frame (1) to approach or move away from the steel pipe; The circular axes of the plurality of correction rods (3025) are evenly distributed on the outside of the steel pipe, and the correction rods (3025) are driven to rotate relative to the steel pipe.

2. The steel pipe finishing device according to claim 1, characterized in that: The base frame (1) comprises a front frame body (101), an intermediate frame seat (102) and a rear frame body (103); The intermediate frame (102) includes a bottom plate (1021), guard plates (1022) provided on both sides of the bottom plate (1021), and a top plate (1023) provided on the top of the guard plates (1022); Support frames are provided on both the top plate (1023) and the bottom plate (1021), and the support frames are used to limit the linear displacement of the rotation correction unit (302).

3. The steel pipe finishing device according to claim 2, characterized in that: The extrusion assembly (301) further comprises a first driving portion (3012) fixed to the inner wall of the guard plate (1022); a power output shaft of the first driving portion (3012) is connected to an arc-shaped mounting plate (3013); and the extrusion plate (3011) is fixed to the mounting plate (3013); An extrusion space (3014) is formed between the two extrusion plates (3011), and the steel pipe is trimmed for ovality through the extrusion space (3014).

4. The steel pipe finishing device according to claim 3, characterized in that: The upper and lower ends of the extrusion plate (3011) are further connected to parallel plates (3015); a joint bearing (3016) is provided in the mounting plate (3013); and the power output shaft of the first driving part (3012) is inserted into the joint bearing (3016); The support frame is provided with a straightness measuring device (3017), and the bottom plate (1021) and the top plate (1023) are both provided with an abutment assembly (303) extending toward the parallel plate (3015). The abutment assembly (303) includes a second driving portion (3031) and an abutment plate (3032). The abutment plate (3032) is connected to the power output end of the second driving portion (3031), and the abutment plate (3032) is driven to abut against the parallel plate (3015).

5. The steel pipe finishing device according to claim 3, characterized in that: The support frame comprises an upper frame body (5) provided on the top plate (1023), and a lower frame body (6) provided on the bottom plate (1021) and protruding upward; The rotary correction unit (302) comprises a rotating ring (3021) provided between the upper frame (5) and the lower frame (6), and a driving mechanism provided in the rotating ring (3021), wherein the driving mechanism drives a plurality of the correction rods (3025) to abut against the steel pipe at the same time; The rotating ring (3021) is driven to rotate between the upper frame (5) and the lower frame (6).

6. The steel pipe finishing device according to claim 5, characterized in that: The driving mechanism comprises a turntable (3022) pivotally connected to the rotating ring (3021), and a slider (3023) slidably connected to the turntable (3022), and the correction rod (3025) is pivotally connected to the slider (3023); The rotating disk (3022) is provided with a plurality of arc-shaped grooves (30221) evenly distributed around the circumference, and the arc-shaped grooves (30221) are inclined along the radial direction of the rotating disk (3022); A circumvention hole (30222) for circumventing the steel pipe is provided in the middle of the turntable (3022), and the steel pipe passes through the circumvention hole (30222).

7. The steel pipe finishing device according to claim 6, characterized in that: The driving mechanism further comprises a positioning block (3024) fixedly arranged on the rotating ring (3021), the positioning block (3024) being provided with a plurality of open slots (30241) arranged along its own radial direction, a through hole (30242) being provided in the middle of the positioning block (3024), the open slots (30241) being in communication with the through hole (30242), and the diameter of the through hole (30242) being larger than that of the steel pipe; The slider (3023) includes a block (30231) and a convex shaft (30232) protruding from the lower end of the block (30231), the convex shaft (30232) is arranged in the arc groove (30221), the block (30231) is arranged in the open groove (30241), and the correction rod (3025) is arranged along the thickness direction of the positioning block (3024) and is arranged on the side of the block (30231) close to the steel pipe.

8. The steel pipe finishing device according to claim 7, characterized in that: The rotating ring (3021) is connected to a third driving part (304), the rotating disk (3022) is provided with an upwardly protruding vertical shaft (309), a crank arm (308) is sleeved on the vertical shaft (309), and a power output end of the third driving part (304) is pivotally connected to the crank arm (308); The crank arm (308) is provided with an arc-shaped sliding groove, and the vertical shaft (309) is inserted into the arc-shaped sliding groove; When the third driving part (304) drives the crank to move, the vertical shaft (309) slides along the arc-shaped sliding groove, and the turntable (3022) rotates relative to the rotating ring (3021) to drive the correction rod (3025) to abut against or move away from the steel pipe.

9. The steel pipe finishing device according to claim 8, characterized in that: An outer ring gear (305) is sleeved on the outer side of the positioning block (3024), and a worm (306) is provided on the base frame (1) along its width direction, and the worm (306) is meshed with the outer ring gear (305) for transmission; One end of the worm (306) is connected to a fourth driving portion (307), and the fourth driving portion (307) is connected to the outside of the guard plate (1022).

10. The steel pipe finishing device according to claim 2, characterized in that: The transmission assembly (2) comprises a plurality of transmission rods (201) pivotally connected to the front frame (101), and guide rods (202) arranged above the front frame (101), wherein two rows of guide rods (202) are arranged in an eight-shaped pattern and are close to one end of the extrusion assembly (301), and the distance between the two rows of guide rods (202) is the smallest; The front frame (101) is also provided with a fifth driving part (203), and the fifth driving part (203) and one of the transmission rods (201) are chain-driven, and two adjacent transmission rods (201) are chain-driven.

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