A kind of half-round pipe bending welding is adjusted with the device of fit degree

Abstract

The utility model relates to half round pipe clamp cover welding technical field especially relates to a kind of half round pipe bending welding is used to fit degree adjusting device, it includes: mounting seat, swing arm, transition roller group, adjusting roller group and swing drive mechanism;One end of swing arm is hinged around first pivot in the front end of mounting seat, swing drive mechanism is hinged around second pivot in the rear end of mounting seat;The driving rod of swing drive mechanism is hinged around third pivot in the side of swing arm away from reactor cylinder wall, and first pivot, second pivot and third pivot are arranged in parallel;Transition roller group and adjusting roller group are arranged in the side of swing arm towards reactor cylinder wall, and transition roller group is located in the hinged end of swing arm, and adjusting roller group is located in swing arm free end;Swing arm is swung towards the cylinder wall of reactor, adjusts the fit radius of half round pipe and cylinder wall, realizes the close fit of half round pipe and cylinder wall, effectively guarantees the stability of welding process, further improves the welding quality of half round pipe clamp cover and cylinder wall.

Description

Technical Field

[0001] This utility model relates to the field of semi-circular tube jacket welding technology, and in particular to a fitting degree adjustment device for semi-circular tube bending welding. Background Technology

[0002] In the structural design of the reactor, a semi-circular tube jacket is made. After the semi-circular tube is rolled into shape, it is welded to the cylinder in a spiral manner to strengthen the cylinder wall, thereby improving the stress condition of the container and making the original cylinder wall thinner.

[0003] However, due to the deviation in curvature of the semi-circular tube during the rolling and subsequent welding assembly process, the inner wall of the semi-circular tube and the outer wall of the cylinder cannot be guaranteed to fit tightly, which directly affects the stability of the welding process and has an adverse effect on the welding quality of the reactor jacket structure.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the general background of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] This invention provides a fitting adjustment device for bending and welding semi-circular tubes, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A fitting adjustment device for bending and welding semi-circular tubes includes: a mounting base, a swing arm, a transition roller assembly, an adjustment roller assembly, and a swing drive mechanism; One end of the swing arm is hinged to the front end of the mounting base around the first pivot, and the swing drive mechanism is hinged to the rear end of the mounting base around the second pivot. The drive rod of the swing drive mechanism is hinged around the third rotating shaft to the side of the swing arm facing away from the reactor wall, and the first rotating shaft, the second rotating shaft and the third rotating shaft are arranged in parallel. The transition roller assembly and the adjusting roller assembly are disposed on the side of the swing arm facing the reactor wall, with the transition roller assembly located at the hinge end of the swing arm and the adjusting roller assembly located at the free end of the swing arm. During adjustment, the swing drive mechanism drives the swing arm to swing toward the cylinder wall of the reactor, and the guide concave wheels on the transition roller group and the adjustment roller group cause the semi-circular tube jacket to bend and fit against the cylinder wall.

[0007] Furthermore, a first linear movement component is provided at the bottom of the mounting base; The first linear moving component is arranged along the transmission direction of the semi-circular tube, enabling the mounting base to move radially along the cylinder wall.

[0008] Furthermore, a second linear movement component is provided between the adjusting roller assembly and the swing arm; The second linear movement component is arranged along the length direction of the swing arm, causing the adjusting roller group to move toward the transition roller group.

[0009] Furthermore, the swing arm is provided with angle adjustment discs on both sides of the hinge end, and the transition roller assembly is provided with connecting rods on the side facing the swing arm and at both ends. The connecting rod is connected to the angle adjustment disc, so that the transition roller assembly is oscillating around the fourth rotating axis on the swing arm via the angle adjustment disc, and the fourth rotating axis is parallel to the first rotating axis.

[0010] Furthermore, the angle adjustment disc includes parallel plates and connecting plates; The plate is fixed to the side wall of the swing arm, and multiple threaded holes are provided in the circumferential direction near the outer edge of the plate. The connecting plate is provided with at least two arc-shaped slots.

[0011] Furthermore, both the adjusting roller assembly and the transition roller assembly include a base plate, a support, and a third linear movement component; The guide concave wheel is rotatably mounted on the support, and the third linear moving component is located between the base plate and the support, used to drive the support to move along the axial direction of the first rotating shaft.

[0012] Furthermore, the third linear motion component consists of a sliding guide rail assembly, a lead screw and nut assembly, and a servo motor.

[0013] Furthermore, the vertical distance from the guide concave wheel on the adjusting roller assembly to the swing arm is greater than the vertical distance from the guide concave wheel on the transition roller assembly to the swing arm.

[0014] Furthermore, the swing arm includes two crossbeams and a plurality of longitudinal beams arranged at equal intervals along the length direction between the two crossbeams.

[0015] Furthermore, the swing drive mechanism includes: A support base is fixed to the rear end of the mounting base; The first hinge seat is disposed above the support seat; The second hinge seat rotates relative to the first hinge seat about the second pivot axis; The telescopic pole assembly is mounted on the second hinge seat; The drive rod of the telescopic rod assembly rotates around the third pivot, while the second hinge seat rotates around the second pivot, so that the swing arm swings around the first pivot.

[0016] The following technical effects can be achieved through the technical solution of this utility model: This invention uses a guide concave wheel of a transition roller group and an adjusting roller group to form a curved arc structure of the semi-circular tube that fits the cylinder wall. The swing arm is driven to swing toward the cylinder body by a swing drive mechanism to adjust the contact radius between the semi-circular tube and the cylinder wall, so as to achieve a tight fit between the semi-circular tube and the cylinder wall, effectively ensuring the stability of the welding process and further improving the welding quality of the semi-circular tube jacket and the cylinder wall. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of a fitting adjustment device for bending and welding semi-circular tubes; Figure 2 A front view of a fitting adjustment device for bending and welding semi-circular tubes; Figure 3 This is a schematic diagram of the swing drive mechanism; Figure 4 for Figure 1 A magnified view of a section at point A in the middle; Figure 5 for Figure 2 A magnified view of a section at point B.

[0019] Reference numerals: 1. Mounting base; 2. Swing arm; 3. Transition roller assembly; 31. Guide concave wheel; 32. Base plate; 33. Support; 34. Third linear movement assembly; 4. Adjusting roller assembly; 5. Swing drive mechanism; 51. Support base; 52. First hinge base; 53. Second hinge base; 54. Telescopic rod assembly; 6. First rotating shaft; 7. Second rotating shaft; 8. Third rotating shaft; 9. First linear movement assembly; 10. Second linear movement assembly; 11. Angle adjustment disc; 11a. Plate; 11b. Connecting plate; 12. Connecting rod; 13. Fourth rotating shaft. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] like Figures 1-5 As shown, this application provides a fitting adjustment device for bending and welding semi-circular tubes, including: a mounting base 1, a swing arm 2, a transition roller assembly 3, an adjusting roller assembly 4, and a swing drive mechanism 5; one end of the swing arm 2 is hinged to the front end of the mounting base 1 around a first rotating shaft 6, and the swing drive mechanism 5 is hinged to the rear end of the mounting base 1 around a second rotating shaft 7; the drive rod of the swing drive mechanism 5 is hinged to the side of the swing arm 2 facing away from the reactor wall around a third rotating shaft 8, and the first rotating shaft 6, the second rotating shaft 7, and the third rotating shaft 8 are arranged in parallel; the transition roller assembly 3 and the adjusting roller assembly 4 are arranged on the side of the swing arm 2 facing the reactor wall, and the transition roller assembly 3 is located at the hinged end of the swing arm 2, and the adjusting roller assembly 4 is located at the free end of the swing arm 2; During adjustment, the swing drive mechanism 5 drives the swing arm 2 to swing toward the cylinder wall of the reactor. The guide concave wheel 31 on the transition roller group 3 and the adjustment roller group 4 causes the semi-circular tube jacket to bend and fit against the cylinder wall.

[0023] The working process of this embodiment is as follows: the pre-rolled semi-circular tube jacket, with its inner arc surface facing the reactor wall, passes sequentially through the guide concave rollers 31 of the transition roller group 3 and the adjusting roller group 4. At this time, the semi-circular tube initially maintains its curved arc structure under the limiting action of the two sets of guide concave rollers 31. After the swing drive mechanism 5 is started, its drive swing arm 2 swings around the first rotating shaft 6 toward the cylinder wall. As the swing amplitude of the swing arm 2 increases, the guide concave rollers 31 of the adjusting roller group 4 gradually push the semi-circular tube toward the cylinder wall until the inner arc surface of the semi-circular tube is completely attached to the outer surface of the cylinder wall. Then the welding equipment welds along the joint between the cylinder wall and the semi-circular tube. At this time, the guide concave rollers 31 continuously apply a stable adhesion force to the semi-circular tube until the entire semi-circular tube jacket is welded.

[0024] This invention uses the guide concave wheel 31 of the transition roller group 3 and the adjusting roller group 4 to make the semi-circular tube form a curved arc structure that fits the cylinder wall. The swing drive mechanism 5 drives the swing arm 2 to swing towards the cylinder body, adjusting the contact radius between the semi-circular tube and the cylinder wall, so as to achieve a tight fit between the semi-circular tube and the cylinder wall, effectively ensuring the stability of the welding process and further improving the welding quality of the semi-circular tube jacket and the cylinder wall.

[0025] As a preferred structure, the bottom of the mounting base 1 is provided with a first linear moving component 9; the first linear moving component 9 is arranged along the transmission direction of the semi-circular tube, which enables the mounting base 1 to move radially along the cylinder wall, and can pre-adjust the mounting base 1 to the optimal initial position with the cylinder wall, so that the swing arm 2 only needs to swing slightly to complete the fit.

[0026] In a preferred embodiment of this utility model, a second linear movement component 10 is provided between the adjusting roller group 4 and the swing arm 2; the second linear movement component 10 is arranged along the length direction of the swing arm 2, so that the adjusting roller group 4 moves toward the transition roller group 3.

[0027] Under the two-point constraint of the adjusting roller group 4 and the transition roller group 3, the bending arc of the semicircular tube is directly determined by the distance between the two sets of rollers. When the distance between the two sets of rollers is fixed, the semicircular tube will form a fixed curvature under the support of the two points. However, by driving the adjusting roller group 4 to move along the length direction of the swing arm 2 through the second linear moving component 10, the distance between the two constraint points can be dynamically changed, thereby adjusting the bending curvature of the semicircular tube in real time so that it can form a precise match with the diameter of the reactor body currently being welded.

[0028] Specifically, for small-diameter cylinders, which have a larger outer curvature and a smaller radius of curvature, the distance between the two sets of rollers needs to be reduced by the second linear moving component 10; while for large-diameter cylinders, which have a smaller outer curvature and a larger radius of curvature, the distance between the two sets of rollers needs to be increased by the second linear moving component 10. By supporting the two points further apart, the local bending force on the semi-circular tube can be reduced, allowing the semi-circular tube to form a gentler bending arc, thereby adapting to the small curvature surface of the large-diameter cylinder.

[0029] In the preferred embodiment, the swing arm 2 is provided with angle adjustment disks 11 on both sides of the hinge end, and the transition roller assembly 3 is provided with connecting rods 12 on the side facing the swing arm 2 and at both ends; the connecting rods 12 are connected to the angle adjustment disks 11, so that the transition roller assembly 3 is oscillating on the swing arm 2 around the fourth rotating shaft 13 through the angle adjustment disks 11, and the fourth rotating shaft 13 is arranged parallel to the first rotating shaft 6.

[0030] Adjusting the angle adjustment disc 11 causes the transition roller group 3 to swing towards the forming component, moving the bending initiation point towards the cylinder wall. This increases the contact pressure at the initiation point, offsetting some of the springback. When the transition roller group 3 swings in the opposite direction, it moves the bending initiation point towards the adjustment roller group, reducing the pressure at the initiation point and preventing excessive bending that results in an insufficient arc. By swinging the transition roller group 3, not only is the contact point position changed, but precise control of the bending initiation point also optimizes the force on the bending section and suppresses springback.

[0031] like Figure 5As shown, preferably, the angle adjustment disc 11 includes a plate 11a and a connecting plate 11b that are parallel to each other; the plate 11a is fixed on the side wall of the swing arm 2, and a plurality of threaded holes are provided in the circumferential direction near the outer edge of the plate 11a, and the connecting plate 11b is provided with at least two arc-shaped slots.

[0032] Specifically, the multiple threaded holes in the circumferential direction of the mounting plate 11a provide a clear reference for angle adjustment, while the arc-shaped slot of the connecting plate 11b has an arc range of 30° and a width adapted to the bolt diameter, which mates with the threaded holes of the mounting plate 11a. During the adjustment process, the connecting plate 11b can rotate around the fourth rotating shaft 13 along the 30° arc range of the arc-shaped slot, thereby driving the transition roller assembly 3 to swing synchronously; when the transition roller assembly 3 swings to the target angle, such as the angle corresponding to the bending start point determined according to the wall thickness and curvature of the semi-circular tube, and after confirming the position through the reference of the slot of the threaded hole of the mounting plate 11a, the connecting bolt is tightened. The bolt head fits tightly with the connecting plate 11b, and the bolt shank is firmly locked with the threaded hole of the mounting plate 11a, thereby fixing the angle of the transition roller assembly 3.

[0033] By using the swing structure of the transition roller group 3, the bending start point of the semi-circular tube can be precisely controlled at the preset position, avoiding the force concentration in the bending section caused by the deviation of the bending start point, and effectively optimizing the force distribution in the bending section. At the same time, the angle adaptability of the transition roller group 3 is further improved, which can better match the conveying direction of the semi-circular tube and the curvature change of the cylinder wall, ultimately enhancing the overall accuracy and stability of the adjustment of the fit between the semi-circular tube and the cylinder wall.

[0034] During the welding process of the semi-circular tube jacket, the semi-circular tube must be aligned with the welding positioning line of the reactor cylinder wall; otherwise, lateral displacement is likely to occur, leading to disordered subsequent spiral arrangement or misalignment of the weld seam. Therefore, as a preferred structure, both the adjusting roller group 4 and the transition roller group 3 include a base plate 32, a support 33, and a third linear movement component 34; the guide concave wheel 31 is rotatably mounted on the support 33, and the third linear movement component 34 is located between the base plate 32 and the support 33, used to drive the support 33 to move along the axial direction of the first rotating shaft 6.

[0035] The third linear moving component 34 can directly drive the guide concave wheel 31 to synchronously feed laterally along the axial direction without the need for an overall moving device. This ensures that the semi-circular tube continuously fits the cylinder wall along the preset spiral path, greatly improving the continuity and accuracy of spiral welding. Preferably, the first linear moving component 9, the second linear moving component 10, and the third linear moving component 34 are all composed of a sliding guide rail assembly, a lead screw and nut assembly, and a servo motor.

[0036] In the preferred embodiment of this utility model, the vertical distance from the guide concave wheel 31 on the adjusting roller group 4 to the swing arm 2 is greater than the vertical distance from the guide concave wheel 31 on the transition roller group 3 to the swing arm 2. The guide concave wheel 31 of the transition roller group 3 is closer to the swing arm 2, and its support point for the semi-circular tube is closer to the swing arm 2. Its bending arm is shorter, allowing it to apply only a slight pre-bending force to the semi-circular tube. This allows the semi-circular tube to be adjusted from a straight tube or preliminary rolled state to a low-arc bending state, avoiding the direct application of reinforcing force that could lead to local wrinkles and cracks. Conversely, the guide concave wheel 31 of the adjusting roller group 4 is farther from the swing arm 2, and its support point is further away from the swing arm 2. Its bending arm is longer, allowing it to apply a shaping and fitting force to the pre-bent semi-circular tube, further increasing the bending arc on the basis of the pre-bending until the curvature of the semi-circular tube is completely matched with the wall curvature. The bending arm is formed by the height difference between the two roller groups, achieving force dispersion.

[0037] In this design, the swing arm 2 includes two crossbeams and multiple longitudinal beams evenly spaced along its length between the two crossbeams. The crossbeams and longitudinal beams are made of hollow square tubing, ensuring structural strength while achieving lightweight construction and reducing the swing drive load.

[0038] like Figure 1 and Figure 3 As shown, the swing drive mechanism 5 includes: a support base 51, a first hinge base 52, a second hinge base 53, and a telescopic rod assembly 54. The support base 51 is fixed to the rear end of the mounting base 1; the first hinge base 52 is disposed above the support base 51; the second hinge base 53 rotates relative to the first hinge base 52 around the second pivot 7; the telescopic rod assembly 54 is mounted on the second hinge base 53; the drive rod of the telescopic rod assembly 54 rotates around the third pivot 8, while the second hinge base 53 rotates around the second pivot 7, so that the swing arm 2 swings around the first pivot 6.

[0039] The rotational engagement of the first hinge seat 52 and the second hinge seat 53 decomposes the driving force into the rotational torque of the second rotating shaft 7 and the axial thrust of the drive rod, avoiding excessive torque on a single component and extending the service life of the swing drive mechanism 5.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fitting degree adjusting device for semi-circular pipe bending welding, characterized by, It includes a mounting base (1), a swing arm (2), a transition roller assembly (3), an adjusting roller assembly (4), and a swing drive mechanism (5); One end of the swing arm (2) is hinged to the front end of the mounting base (1) around the first rotating shaft (6), and the swing drive mechanism (5) is hinged to the rear end of the mounting base (1) around the second rotating shaft (7). The drive rod of the swing drive mechanism (5) is hinged around the third rotating shaft (8) to the side of the swing arm (2) facing away from the reactor wall. The first rotating shaft (6), the second rotating shaft (7) and the third rotating shaft (8) are arranged in parallel. The transition roller assembly (3) and the adjusting roller assembly (4) are disposed on the side of the swing arm (2) facing the reactor wall, and the transition roller assembly (3) is located at the hinge end of the swing arm (2), and the adjusting roller assembly (4) is located at the free end of the swing arm (2). During adjustment, the swing drive mechanism (5) drives the swing arm (2) to swing toward the cylinder wall of the reactor, and the guide concave wheel (31) on the transition roller group (3) and the adjustment roller group (4) causes the semi-circular tube jacket to bend and fit against the cylinder wall.

2. The device according to claim 1, wherein The bottom of the mounting base (1) is provided with a first linear moving component (9); The first linear moving component (9) is arranged along the transmission direction of the semi-circular tube, enabling the mounting base (1) to move radially along the cylinder wall.

3. The device according to claim 1, wherein A second linear movement assembly (10) is provided between the adjusting roller assembly (4) and the swing arm (2); The second linear movement component (10) is arranged along the length direction of the swing arm (2) so that the adjusting roller group (4) moves toward the transition roller group (3).

4. The device according to claim 1, wherein The swing arm (2) is provided with angle adjustment discs (11) on both sides of the hinge end, and the transition roller group (3) is provided with connecting rods (12) on the side facing the swing arm (2) at both ends. The connecting rod (12) is connected to the angle adjustment disk (11), so that the transition roller group (3) is oscillating around the fourth rotating shaft (13) on the swing arm (2) through the angle adjustment disk (11), and the fourth rotating shaft (13) is parallel to the first rotating shaft (6).

5. The device for adjusting the adhesion of a semi-circular pipe bending and welding according to claim 4, characterized in that, The angle adjustment disc (11) includes parallel plates (11a) and connecting plates (11b); The plate (11a) is fixed on the side wall of the swing arm (2), and multiple threaded holes are provided on the plate (11a) in the circumferential direction near the outer edge. The connecting plate (11b) is provided with at least two arc-shaped slots.

6. The fitting adjustment device for bending and welding semi-circular tubes according to claim 1, characterized in that, Both the adjusting roller assembly (4) and the transition roller assembly (3) include a base plate (32), a support (33), and a third linear movement assembly (34); The guide concave wheel (31) is rotatably mounted on the support (33), and the third linear moving component (34) is located between the base plate (32) and the support (33) to drive the support (33) to move along the axial direction of the first rotating shaft (6).

7. The fitting degree adjustment device for semi-circular tube bending welding according to claim 6, characterized in that, The third linear motion component (34) consists of a sliding guide rail assembly, a lead screw and nut assembly, and a servo motor.

8. The fitting adjustment device for bending and welding semi-circular tubes according to claim 1, characterized in that, The vertical distance from the guide concave wheel (31) on the adjusting roller group (4) to the swing arm (2) is greater than the vertical distance from the guide concave wheel (31) on the transition roller group (3) to the swing arm (2).

9. The fitting adjustment device for bending and welding semi-circular tubes according to claim 1, characterized in that, The swing arm (2) includes two crossbeams and a plurality of longitudinal beams that are equally spaced along the length of the two crossbeams.

10. The device for adjusting the adhesion of a semi-circular pipe bending and welding according to claim 1, characterized in that, The swing drive mechanism (5) includes: The support base (51) is fixed to the rear end of the mounting base (1); The first hinge seat (52) is disposed above the support seat (51); The second hinge seat (53) rotates relative to the first hinge seat (52) about the second pivot (7); The telescopic rod assembly (54) is mounted on the second hinge seat (53); The drive rod of the telescopic rod assembly (54) rotates around the third pivot (8), while the second hinge seat (53) rotates around the second pivot (7) so that the swing arm (2) swings around the first pivot (6).

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