A positioning device for welding opening repair

Abstract

The utility model belongs to pipeline welding technical field relates to a kind of positioning device for welding opening repair, including pedestal, the upper end of pedestal is symmetrically provided with rotating frame, the inside of rotating frame is provided with rotating ring, the both ends of rotating ring are symmetrically fixedly connected with limit block, limit block is located at the inside of rotating frame and is rotatably connected with rotating frame, the outside of rotating rod and located at the inside of rotating frame are fixedly connected with multiple groups of fixed rods, the inside of rotating ring is fixedly connected with gear ring a, the inside of pedestal is provided with rotating assembly.The utility model is rotated by rotating ring, so that rotating ring is engaged with sawtooth group by gear ring a and drives multiple fixed rods to rotate synchronously with rotating rod as the axis, so that the device can be clamped to a variety of diameter different pipelines, and make the position of pipeline clamping be in the center of rotating frame, to reduce the staff frequent replacement fixture, to improve operating efficiency and positioning accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline welding technology and relates to a positioning device for weld repair. Background Technology

[0002] Welding is a manufacturing process that uses heat, pressure, or both to achieve atomic or molecular bonding at the joint of two or more metals or thermoplastic materials. Its core principle is to use a heat source (such as an electric arc, flame, or laser) or mechanical pressure to locally melt or plasticize the materials, forming a permanent bond upon cooling. Common welding methods include arc welding, gas welding, laser welding, and friction welding, and are widely used in machinery manufacturing, construction engineering, aerospace, and the automotive industry. It is a key technology for achieving efficient material bonding and structural integration.

[0003] The key to welding lies in the precise control of energy input and material fusion process. Temperature, time, and protective measures (such as inert gas isolation) must be taken into account to avoid oxidation or defects. Modern welding technology not only focuses on the joint strength, but also needs to solve problems such as performance degradation in the heat-affected zone, residual stress, and deformation. With the development of automation and intelligence, the application of robotic welding, digital control, and real-time monitoring technologies has significantly improved welding accuracy and quality, and promoted the evolution of welding from traditional processes to advanced manufacturing technologies with high precision and high efficiency.

[0004] In the field of pipeline welding repair, weld repair positioning devices are key equipment to ensure accurate weld repair. Traditional positioning devices mostly use fixed clamps or single-size clamps, which are only suitable for pipes of specific diameters and have obvious limitations. For repair operations of different pipe diameters, it is necessary to frequently change clamps or manually adjust positioning components, resulting in low operating efficiency and difficulty in ensuring positioning accuracy. Utility Model Content

[0005] The technical problem to be solved by this utility model is that in the field of pipeline welding repair, the weld repair positioning device is a key device to ensure accurate weld repair. Traditional positioning devices mostly use fixed clamps or single-size clamps, which are only suitable for pipes of specific diameters and have obvious limitations. For repair operations of different pipe diameters, it is necessary to frequently change clamps or manually adjust positioning components, resulting in low operating efficiency and difficulty in ensuring positioning accuracy.

[0006] The present invention discloses a positioning device for weld repair, comprising a base, a rotating frame symmetrically arranged on the upper end of the base, a rotating ring arranged on the inner side of the rotating frame, and limit blocks symmetrically fixedly connected to both ends of the rotating ring. The limit blocks are located inside the rotating frame and rotatably connected to the rotating frame. Multiple sets of rotating rods are rotatably connected to the inner side of the rotating frame, and multiple sets of fixing rods are fixedly connected to the outer side of the rotating rods and located inside the rotating frame. A pressing block is fixedly connected to the end of the fixing rod away from the rotating rod. A gear ring a is fixedly connected to the inner side of the rotating ring, and multiple sets of sawtooth groups are fixedly connected to the end of the fixing rod away from the pressing block. The sawtooth groups are meshed with the gear ring a. A support assembly is provided between the rotating frame and the base, a drive assembly is provided inside the rotating frame, and a rotating assembly is provided inside the base.

[0007] The drive assembly includes a servo motor a, which is fixedly connected to the inner side of the rotating frame. A drive rod is fixedly connected to the output end of the servo motor a, and a gear a is fixedly connected to the outer side of the drive rod. A gear ring b is fixedly connected to the outer side of the rotating ring, and the gear ring b meshes with the gear a.

[0008] The support assembly includes a fixed ring, and a fixed ring is fixedly connected to the outer side of the middle part of the rotating frame. A limiting ring is fixedly connected to the outer side of the fixed ring. A limiting groove is opened on the inner side of the base. The limiting ring is located inside the limiting groove and is rotatably connected to the limiting groove.

[0009] The rotating assembly includes a gear ring c, which is fixedly connected to the middle of the outer side of the limiting ring. A synchronizing rod is fixedly connected to the inner side of the base, and gears b are fixedly connected to both ends of the synchronizing rod. The gears b mesh with the gear ring c. A driving mechanism is provided on the inner side of the base.

[0010] The drive mechanism includes a servo motor b, which is fixedly connected to the middle of the inner side of the base. A gear c is fixedly connected to the output end of the servo motor b, and a gear d is fixedly connected to the middle of the synchronizing rod. The gear d meshes with the gear c.

[0011] The outer side of the extrusion block is provided with anti-slip grooves.

[0012] Compared with the prior art, the beneficial effects of this utility model are: by rotating the rotating ring, the rotating ring meshes with the sawtooth group through the gear ring a, driving multiple sets of fixed rods to rotate synchronously around the rotating rod as the axis, so that the device can clamp pipes of various diameters and make the pipe clamping position at the center of the rotating frame, thereby reducing the frequency of changing clamps by the staff, thus improving the operating efficiency and positioning accuracy.

[0013] The rotating component drives the fixed ring shaft to rotate, which in turn drives the rotating frame to rotate. This causes the two sets of rotating frames to rotate the pipes synchronously. As a result, when workers are welding the pipes, they can drive the two sets of pipes to rotate synchronously, thereby eliminating pipe misalignment or angular deviation caused by manual segmentation adjustment, and thus improving the concentricity of the joint and the accuracy of the bevel alignment. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the base of this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the base of this utility model.

[0018] Figure 4 This is a structural schematic diagram of the fixing ring of this utility model.

[0019] Figure 5 This is a schematic diagram of the structure of the drive component of this utility model.

[0020] Figure 6 This is a schematic diagram of the sawtooth assembly and extrusion block of this utility model.

[0021] Figure 7 This is a cross-sectional structural diagram of the limiting ring and rotating frame of this utility model.

[0022] In the diagram: 101, base; 102, rotating frame; 103, rotating ring; 104, limiting block; 105, rotating rod; 106, fixed rod; 107, pressing block; 108, gear ring a; 109, sawtooth assembly; 201, servo motor a; 202, drive rod; 203, gear a; 204, gear ring b; 301, fixed ring; 302, limiting ring; 303, limiting groove; 401, gear ring c; 402, synchronizing rod; 403, gear b; 501, servo motor b; 502, gear c; 503, gear d; 601, anti-slip groove. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0025] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] Example 1

[0028] like Figure 1 - Figure 7 As shown, a positioning device for weld repair includes a base 101. A rotating frame 102 is symmetrically arranged on the upper end of the base 101. A rotating ring 103 is arranged on the inner side of the rotating frame 102. Limiting blocks 104 are symmetrically fixedly connected to both ends of the rotating ring 103. The limiting blocks 104 are located inside the rotating frame 102 and rotatably connected to it. Because the rotating ring 103 is located inside the rotating frame 102, the rotating frame 102 limits the rotation of the rotating ring 103 through the limiting blocks 104, thus making the rotation of the rotating ring 103 more stable. Multiple sets of rotating rings are rotatably connected to the inner side of the rotating frame 102. A rod 105 is fixedly connected to a plurality of fixed rods 106 on the outer side of the rotating rod 105 and on the inner side of the rotating frame 102. A pressing block 107 is fixedly connected to the end of the fixed rod 106 away from the rotating rod 105. A gear ring a108 is fixedly connected to the inner side of the rotating ring 103. A plurality of sawtooth groups 109 are fixedly connected to the end of the fixed rod 106 away from the pressing block 107. The sawtooth groups 109 are meshed with the gear ring a108. A support assembly is provided between the rotating frame 102 and the base 101. A drive assembly is provided on the inner side of the rotating frame 102. A rotating assembly is provided on the inner side of the base 101.

[0029] The drive assembly includes a servo motor a201. The servo motor a201 is fixedly connected to the inner side of the rotating frame 102. The output end of the servo motor a201 is fixedly connected to a drive rod 202. The outer side of the drive rod 202 is fixedly connected to a gear a203. The outer side of the rotating ring 103 is fixedly connected to a gear ring b204. The gear ring b204 meshes with the gear a203.

[0030] The outer side of the extrusion block 107 is provided with an anti-slip groove 601, which increases the friction between the device and the pipe.

[0031] During operation, the servo motor a201 is started, causing the output end of the servo motor a201 to drive the drive rod 202 to rotate. When the drive rod 202 rotates, it meshes with the gear ring b204 through the gear a203, thereby driving the rotating ring 103 to rotate. The rotating ring 103 meshes with the sawtooth group 109 through the gear ring a108, causing multiple sets of fixed rods 106 to rotate synchronously around the rotating rod 105 as the axis. This allows the device to clamp pipes of various diameters and ensures that the clamped position of the pipe is at the center of the rotating frame 102, thereby reducing the frequency of clamp changes by the operator and improving operating efficiency and positioning accuracy.

[0032] Example 2

[0033] like Figure 1 - Figure 7 As shown, the support assembly includes a fixing ring 301. The fixing ring 301 is fixedly connected to the outer side of the middle part of the rotating frame 102. A limiting ring 302 is fixedly connected to the outer side of the fixing ring 301. A limiting groove 303 is formed on the inner side of the base 101. The limiting ring 302 is located inside the limiting groove 303 and is rotatably connected to the limiting groove 303.

[0034] The rotating assembly includes a gear ring c401. The gear ring c401 is fixedly connected to the middle of the outer side of the limiting ring 302. A synchronizing rod 402 is fixedly connected to the inner side of the base 101. Gears b403 are fixedly connected to both ends of the synchronizing rod 402. The gears b403 mesh with the gear ring c401. A driving mechanism is provided on the inner side of the base 101.

[0035] The drive mechanism includes a servo motor b501, which is fixedly connected to the middle of the inner side of the base 101. A gear c502 is fixedly connected to the output end of the servo motor b501, and a gear d503 is fixedly connected to the middle of the synchronizing rod 402. The gear d503 meshes with the gear c502.

[0036] During operation, the servo motor b501 is started, causing its output to drive gear c502 to rotate. Gear c502 meshes with gear d503, thereby driving the synchronizing rod 402 to rotate. The synchronizing rod 402 meshes with gear ring c401 through gears b403 at both ends, thus driving the limiting ring 302 to rotate. The limiting ring 302 is limited by the fixing ring 301, making its rotation more stable. At the same time, when the limiting ring 302 rotates, the fixing ring 301 drives the rotating frame 102 to rotate, causing the two sets of rotating frames 102 to drive the pipe to rotate synchronously. This allows the workers to drive the two sets of pipes to rotate synchronously when welding, thereby eliminating pipe misalignment or angular deviation caused by manual segmentation adjustment, and improving the concentricity and bevel alignment accuracy of the joint.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. The present utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A positioning device for weld repair, characterized in that: The system includes a base (101), with a rotating frame (102) symmetrically arranged at the upper end of the base (101). A rotating ring (103) is arranged on the inner side of the rotating frame (102). Limiting blocks (104) are symmetrically fixedly connected to both ends of the rotating ring (103). The limiting blocks (104) are located on the inner side of the rotating frame (102) and are rotatably connected to the rotating frame (102). Multiple sets of rotating rods (105) are rotatably connected to the inner side of the rotating frame (102). Multiple sets of fixing rods (106) are fixedly connected to the outer side of the rotating rods (105) and located on the inner side of the rotating frame (102). The fixed rod (106) is fixedly connected to a pressing block (107) at one end away from the rotating rod (105). A gear ring a (108) is fixedly connected to the inner side of the rotating ring (103). Multiple sets of saw teeth (109) are fixedly connected to one end of the fixed rod (106) away from the pressing block (107). The saw teeth (109) mesh with the gear ring a (108). A support assembly is provided between the rotating frame (102) and the base (101). A drive assembly is provided on the inner side of the rotating frame (102). A rotating assembly is provided on the inner side of the base (101).

2. The positioning device for weld repair according to claim 1, characterized in that: The drive assembly includes a servo motor a (201), the inner side of the rotating frame (102) is fixedly connected to the servo motor a (201), the output end of the servo motor a (201) is fixedly connected to the drive rod (202), the outer side of the drive rod (202) is fixedly connected to the gear a (203), the outer side of the rotating ring (103) is fixedly connected to the gear ring b (204), and the gear ring b (204) meshes with the gear a (203).

3. The positioning device for weld repair according to claim 1, characterized in that: The support assembly includes a fixed ring (301), and a fixed ring (301) is fixedly connected to the outer side of the middle part of the rotating frame (102). A limiting ring (302) is fixedly connected to the outer side of the fixed ring (301). A limiting groove (303) is opened on the inner side of the base (101). The limiting ring (302) is located inside the limiting groove (303) and is rotatably connected to the limiting groove (303).

4. A positioning device for weld repair according to claim 3, characterized in that: The rotating assembly includes a gear ring c (401), the gear ring c (401) is fixedly connected to the middle of the outer side of the limiting ring (302), the synchronizing rod (402) is fixedly connected to the inner side of the base (101), the two ends of the synchronizing rod (402) are fixedly connected to gears b (403), the gears b (403) mesh with the gear ring c (401), and the inner side of the base (101) is provided with a driving mechanism.

5. A positioning device for weld repair according to claim 4, characterized in that: The drive mechanism includes a servo motor b (501), which is fixedly connected to the middle of the inner side of the base (101). The output end of the servo motor b (501) is fixedly connected to a gear c (502), and the middle of the synchronizing rod (402) is fixedly connected to a gear d (503). The gear d (503) meshes with the gear c (502).

6. A positioning device for weld repair according to claim 1, characterized in that: The outer side of the extrusion block (107) is provided with anti-slip grooves (601).

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