Large-diameter pipeline roundness correction tool

Abstract

The utility model relates to the technical field of pipeline machining, and discloses a large-diameter pipeline roundness correcting tool which comprises a base and a fixing mechanism located on one side of the base and used for fixing a pipeline, a rotating cylinder is rotationally installed on the top of the base, an inner supporting mechanism is arranged on one side of the base, and a rotating shaft is arranged on the rotating cylinder. The base is provided with a driving mechanism used for rotating the inner supporting mechanism. The fixing mechanism is arranged to fix a pipeline needing to be corrected, the inner supporting mechanism is arranged to extrude and tightly support the interior of a port according to pipelines with different pipe diameters, the roundness of the port of the pipeline is corrected in the tightly supporting process, the driving mechanism is matched with a rotating roller in the inner supporting mechanism to roll along the inner wall of the pipeline after the pipeline is tightly supported, and therefore the pipeline can be corrected. And therefore, the port of the pipeline is extruded more uniformly, and the roundness value is corrected more accurately.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline processing, in particular to a tool for correcting the roundness of a large-diameter pipeline. Background Art

[0002] At present, after the initial processing of the pipeline, the pipe mouth or straight pipe section is elliptical and has a certain gap from the international standard range. In order to ensure the quality of subsequent welding, small-diameter pipes are calibrated by manual knocking or a small tooling hydraulic calibrating machine inside the pipe mouth, which is achieved by multi-directional rotation. However, for large-diameter elbows in the diameter range of 1220, due to their large diameter, difficult to control height, and heavy weight, it is difficult to achieve manual and related tooling equipment operation.

[0003] The device for assisting the roundness correction of the pipe end with the announcement number CN215543907U, wherein the regular polygon fixing plate can be made according to the proportion of equally divided arc lengths according to the diameter of the pipe material, the length of the roundness deformation section of the pipe end, etc., and the mechanism can fix the deformed part in all directions and positions in a symmetrical structure and match the subsequent work, which is simple to operate, safe and reliable, and has high control accuracy. After the regular polygon mechanism fixes the pipe end in a reasonable position, the operator uses an electric torque wrench to force and fix the bolts in the order of polygon symmetry. After all positions are fixed, the position where the roundness deformation of the pipe end does not meet the standard is found. After the flame heats the part, the electric torque wrench applies uniform top force to the part by tightening the bolts to achieve the qualified size value of the corrected roundness.

[0004] However, the regular polygonal fixing plate in the above scheme has a fixed size. When fixing pipes with different diameters, regular polygonal fixing plates of different sizes need to be manufactured, resulting in a high production cost and a small scope of use.

[0005] Therefore, we proposed a large-diameter pipe roundness correction tool to solve the above problems. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] In view of the deficiencies of the prior art in the above-mentioned background technology, the purpose of the utility model is to provide a large-diameter pipe roundness correction tool to solve the problems raised in the above-mentioned background technology.

[0008] (II) Technical solution

[0009] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] A large-diameter pipe roundness correction tool comprises a base and a fixing mechanism located on one side of the base for fixing the pipe, a rotating drum is rotatably mounted on the top of the base, an inner support mechanism is provided on one side of the base, and a driving mechanism for rotating the inner support mechanism is provided on the base;

[0011] The internal support mechanism includes a first hydraulic cylinder fixed in a rotating drum and a plurality of connecting rods. A mounting block is arranged on the piston rod of the first hydraulic cylinder. A plurality of articulated rods are hinged on the cylinder barrel and the mounting block of the first hydraulic cylinder along their circumferential direction. One end of the plurality of articulated rods away from the cylinder barrel and the mounting block of the first hydraulic cylinder are respectively hinged to the two ends of the connecting rod, and a rotating roller is rotatably mounted on the connecting rod.

[0012] Furthermore, the fixing mechanism comprises a U-shaped seat, three inner walls of the U-shaped seat are provided with fixing plates, and the U-shaped seat is provided with three piston rods and a second hydraulic cylinder respectively fixed to the three fixing plates.

[0013] Furthermore, sleeves with the same outer diameter are fixed on the outer sides of the first hydraulic cylinder and the mounting block, and ends of the plurality of articulated rods away from the connecting rod are respectively hinged to the outer walls of the two sleeves.

[0014] Furthermore, a plurality of the connecting rods are arranged with equal arc lengths along the circumference of the collar, the number of the connecting rods is at least three, and the hinge rods at both ends thereof are arranged symmetrically.

[0015] Preferably, the driving mechanism comprises a driving motor fixed on the base, and gears and gear rings fixed on the rotating shaft of the driving motor and the outer wall of the rotating drum respectively, and the gears and gear rings are driven by a chain.

[0016] Preferably, an auxiliary support structure is provided on the inner support mechanism, and the auxiliary support structure includes a U-shaped frame fixed on the connecting rod, a sliding ring slidably installed on the piston rod of the first hydraulic cylinder, and a telescopic rod arranged between the U-shaped frame and the sliding ring. The number of the telescopic rods and the U-shaped frame is equal to the connecting rod, and the two ends of the telescopic rod are respectively fixed to the bottom wall of the U-shaped frame and the outer wall of the sliding ring.

[0017] Preferably, the telescopic rod is a multi-stage telescopic rod.

[0018] Preferably, a triangular support plate is provided on one side of the base close to the inner support mechanism.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The setting of the fixing mechanism can fix the pipe that needs to be corrected, and the setting of the internal supporting mechanism can squeeze and tighten the inside of the port according to the pipes of different diameters, and correct the roundness of the pipe port during the tightening process. The driving mechanism cooperates with the roller in the internal supporting mechanism to roll along the inner wall of the pipe after the pipe is tightened, so that the extrusion of the pipe port is more uniform and the roundness correction is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the large-diameter pipe roundness correction tooling of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the inner support mechanism of the large-diameter pipe roundness correction tooling of the utility model;

[0024] Figure 3 This is a schematic diagram of the driving mechanism structure of the large-diameter pipe roundness correction tooling of the utility model;

[0025] Figure 4 The utility model is a schematic diagram of the fixed plate structure of the large-diameter pipe roundness correction tool.

[0026] In the figure: base 1, fixing mechanism 2, U-shaped seat 21, fixing plate 22, second hydraulic cylinder 23, rotating drum 3, inner support mechanism 4, first hydraulic cylinder 41, mounting block 42, collar 43, hinged rod 44, connecting rod 45, roller 46, driving mechanism 5, driving motor 51, gear 52, gear ring 53, chain 54, auxiliary supporting structure 6, U-shaped frame 61, slip ring 62, telescopic rod 63, triangular support plate 7. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-3 As shown, the utility model provides a large-diameter pipe roundness correction tool, including a base 1 and a fixing mechanism 2 located on one side of the base 1 for fixing the pipe, a rotating drum 3 is rotatably installed on the top of the base 1, an internal support mechanism 4 is provided on one side of the base 1, and a driving mechanism 5 for rotating the internal support mechanism 4 is provided on the base 1.

[0029] like Figure 2 As shown, the inner support mechanism 4 includes a first hydraulic cylinder 41, a mounting block 42, two collars 43, a plurality of articulated rods 44, a plurality of connecting rods 45 and a plurality of rollers 46. The cylinder barrel of the first hydraulic cylinder 41 is fixed inside the rotating cylinder 3. The mounting block 42 is a columnar structure, which is coaxially fixed to the end of the piston rod of the first hydraulic cylinder 41. The two collars 43 have the same outer diameter and are respectively fixed to the cylinder barrel of the first hydraulic cylinder 41 and the outer side of the mounting block 42. The number of articulated rods 44 is twice the number of connecting rods 45. The rollers 46 and the connecting rods The number of 45 is equal and at least three are provided, the number of articulated rods 44 is at least six, and the multiple articulated rods 44 are divided into two groups. The connecting rod 45 and the two groups of articulated rods 44 are respectively distributed along the circumference of the collar 43 with equal arc lengths. The axis of the connecting rod 45 is parallel to the collar 43. One end of the two groups of articulated rods 44 is respectively hinged to the outer walls of the two collars 43, and the other end thereof is respectively hinged to the two ends of the connecting rod 45. The roller 46 is rotatably installed on the connecting rod 45, and its diameter is larger than the width of the articulated rod 44 to prevent the articulated rod 44 from contacting the inner wall of the pipe.

[0030] like Figure 3 As shown, the driving mechanism 5 includes a driving motor 51 fixed on the base 1 and a gear 52 and a gear ring 53 fixed to the rotating shaft of the driving motor 51 and the outer wall of the rotating drum 3 respectively. The gear 52 and the gear ring 53 are driven by a chain 54.

[0031] like Figure 1 As shown, the fixing mechanism 2 includes a U-shaped seat 21, three fixing plates 22 and three second hydraulic cylinders 23. The three fixing plates 22 are respectively arranged on three inner walls of the U-shaped seat 21 with equal arc lengths along the circumference of the collar 3. The three second hydraulic cylinders 23 are fixed on the U-shaped seat 21, and the ends of their piston rods are fixed to the fixing plates 22 for controlling the clamping and loosening of the three fixing plates 22.

[0032] When in use, first place the pipe to be corrected on the U-shaped seat 21, and start the three second hydraulic cylinders 23 at the same time, clamp the outer wall of the pipe through the three fixed plates 22, then set the retraction stroke of the first hydraulic cylinder 41 according to the ideal size of the pipe, and when the first hydraulic cylinder 41 retracts, the roller 46 extends outward, and start the drive motor 51 at the same time. The drive motor 51 drives the inner support mechanism 4 to rotate, and continues to move when the outer wall of the roller 46 is pressed against the inner wall of the pipe, and squeezes the pipe until the set value is reached, and the roundness value is corrected. At the same time, the rotating roller 46 rolls and squeezes the inner wall of the pipe to make the squeezing of the inner wall of the pipe more uniform.

[0033] As a preferred technical solution of the utility model: an auxiliary support structure 6 is arranged on the inner support mechanism 4, and the auxiliary support structure 6 includes a U-shaped frame 61 fixed on the connecting rod 45, a slip ring 62 slidably installed on the piston rod of the first hydraulic cylinder 41, and a telescopic rod 63 arranged between the U-shaped frame 61 and the slip ring 62. The telescopic rod 63 is a multi-stage telescopic rod. The number of telescopic rods 63 and the U-shaped frame 61 is equal to that of the connecting rod 45. The two ends of the telescopic rod 63 are respectively fixed to the bottom wall of the U-shaped frame 61 and the outer wall of the slip ring 62. The setting of the auxiliary support structure 6 can play a certain auxiliary supporting role on the roller 46 to improve the stability of the roller 46 when rolling.

[0034] As a preferred technical solution of the utility model: a triangular support plate 7 is provided on one side of the base 1 close to the inner support mechanism 4. The provision of the triangular support plate 7 can improve the stability of the base 1 during pipeline correction and prevent it from tipping over.

[0035] As a preferred technical solution of the utility model: the three fixing plates 22 are arc-shaped plates, and a plurality of teeth are arranged on the arc surface thereof to provide a more stable clamping effect on the outer wall of the pipe.

[0036] The electrical components mentioned in this article can be electrically connected to an external controller, and the controller can be electrically connected to an external 220V mains power supply, and the controller can be a conventional known device such as a computer that performs control.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be noted that, in the present invention, unless otherwise clearly specified and limited, the terms such as “set”, “install”, “connected”, “connected”, “fixed”, etc. should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can also be indirectly connected through an intermediate medium.

[0038] In the description of the present invention, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In this article, the meaning of "plurality" is two or more, unless otherwise clearly and specifically limited.

[0039] For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances; for technicians in this field, they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A large-diameter pipe roundness correction tool, comprising a base (1) and a fixing mechanism (2) located on one side of the base (1) for fixing the pipe, characterized in that: A rotating drum (3) is rotatably mounted on the top of the base (1); an inner support mechanism (4) is provided on one side of the base (1); and a driving mechanism (5) for rotating the inner support mechanism (4) is provided on the base (1); The inner support mechanism (4) comprises a first hydraulic cylinder (41) fixed in the rotating drum (3) and a plurality of connecting rods (45); a mounting block (42) is arranged on the piston rod of the first hydraulic cylinder (41); a plurality of articulated rods (44) are hingedly connected along the circumferential direction of the cylinder barrel of the first hydraulic cylinder (41) and the mounting block (42); one end of the plurality of articulated rods (44) away from the cylinder barrel of the first hydraulic cylinder (41) and the mounting block (42) is respectively hingedly connected to the two ends of the connecting rod (45); and a rotating roller (46) is rotatably mounted on the connecting rod (45).

2. A large-diameter pipe roundness correction tool according to claim 1, characterized in that: The fixing mechanism (2) comprises a U-shaped seat (21), three inner walls of the U-shaped seat (21) are each provided with a fixing plate (22), and the U-shaped seat (21) is provided with three piston rods and a second hydraulic cylinder (23) respectively fixed to the three fixing plates (22).

3. A large-diameter pipe roundness correction tool according to claim 2, characterized in that: Rings (43) with the same outer diameter are fixed on the outside of the first hydraulic cylinder (41) and the mounting block (42), and one end of the plurality of hinged rods (44) away from the connecting rod (45) is hinged to the outer walls of the two rings (43) respectively.

4. A large-diameter pipe roundness correction tool according to claim 3, characterized in that: The plurality of connecting rods (45) are arranged with equal arc lengths along the circumference of the collar (43), the number of the connecting rods (45) is at least three, and the hinge rods (44) at both ends thereof are arranged symmetrically.

5. A large-diameter pipe roundness correction tool according to claim 4, characterized in that: The driving mechanism (5) comprises a driving motor (51) fixed on the base (1), and a gear (52) and a toothed ring (53) respectively fixed on the rotating shaft of the driving motor (51) and the outer wall of the rotating drum (3); the gear (52) and the toothed ring (53) are driven by a chain (54).

6. The large-diameter pipe roundness correction tool according to claim 1 is characterized by: The inner support mechanism (4) is provided with an auxiliary support structure (6), the auxiliary support structure (6) comprising a U-shaped frame (61) fixed on the connecting rod (45), a sliding ring (62) slidably mounted on the piston rod of the first hydraulic cylinder (41), and a telescopic rod (63) arranged between the U-shaped frame (61) and the sliding ring (62), the number of the telescopic rod (63) and the U-shaped frame (61) being equal to the number of the connecting rod (45), and the two ends of the telescopic rod (63) being respectively fixed to the bottom wall of the U-shaped frame (61) and the outer wall of the sliding ring (62).

7. A large-diameter pipe roundness correction tool according to claim 6, characterized in that: The telescopic rod (63) is a multi-stage telescopic rod.

8. The large-diameter pipe roundness correction tool according to claim 1 is characterized by: A triangular support plate (7) is provided on one side of the base (1) close to the inner support mechanism (4).

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