Pipe outside welding aligner

Abstract

The utility model relates to a pipeline outer welding mouthpiece, including upper clamp jaw 1, lower clamp jaw 2 and jacking mechanism, one end of upper clamp jaw 1 and lower clamp jaw 2 is movably connected through A pin shaft 14, a group of locating blocks 3 are arranged in upper clamp jaw 1 and lower clamp jaw 2 respectively, and welding avoidance groove 4 is formed in locating block 3, the bottom of lower clamp jaw 2 is provided with stabilizing seat 5, jacking mechanism is installed at the other end of upper clamp jaw 1 and lower clamp jaw 2, and upper clamp jaw 1 and lower clamp jaw 2 are folded through jacking mechanism, the pipeline clamping alignment speed is fast, the outer wall of pipeline is not damaged, and the convenient transportation is placed.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment, specifically to a pipe external welding butt joint device. Background Technology

[0002] Currently, during pipeline construction, multiple pipe sections need to be welded end-to-end on the ground before being buried in the soil. Pipe alignment tools are commonly used during welding to align the two pipe ends. However, the positioning blocks inside existing alignment tools are mostly made of steel, which can easily damage the outer wall of the pipe when clamping it. Inverting the pipe reduces its lifespan and makes it more prone to corrosion. Furthermore, existing alignment tools lack a stable base at the bottom, making them prone to tipping over during placement and hindering transportation. Utility Model Content

[0003] The purpose of this utility model is to address the above-mentioned shortcomings by providing a pipe external welding fitting.

[0004] This utility model includes an upper gripper, a lower gripper, and a lifting and tightening mechanism. One end of the upper jaw and the lower jaw are movably connected by pin A. A set of positioning blocks are set in the upper jaw and the lower jaw respectively. The positioning blocks have welding clearance grooves. A stabilizing seat is set at the bottom of the lower jaw. The lifting and tightening mechanism is installed at the other end of the upper jaw and the lower jaw. The lifting and tightening mechanism drives the upper jaw and the lower jaw to close.

[0005] Both the upper and lower grippers are composed of a pair of arc-shaped rods, and the positioning block is installed between the pair of arc-shaped rods.

[0006] A protective pad is provided on the end face of the positioning block.

[0007] The welding clearance groove is a U-shaped groove with beveled openings on both sides.

[0008] The lifting and tightening mechanism includes a portal frame and a jack. A lifting base plate is provided at the other end of the upper jaw. Guide side plates are provided on both sides of the lifting base plate. The jack is installed on the lifting base plate, which is located inside the portal frame. The working end of the jack is connected to the middle of the crossbeam of the portal frame. The bottom opening of the portal frame has a through pin hole. A pair of connecting lugs are provided on the lower jaw. The pin hole of the portal frame is connected to the pin hole of the connecting lug. The B pin is inserted to install the bottom of the portal frame onto the pair of connecting lugs.

[0009] The insertion ends of pins A and B are respectively provided with anti-detachment pin holes, into which cotter pins are inserted.

[0010] The lower jaw has a double-ear seat on its arc-shaped rod. The upper jaw has an arc-shaped rod inside the double-ear seat and a through-hole that communicates with the shaft hole of the double-ear seat. Pin A is inserted into the shaft hole and the through-hole.

[0011] A pair of connecting plates are provided on the top of the stabilizer, and the connecting plates are welded to the inner wall of the lower jaw.

[0012] The protective pad is made of polyurethane material.

[0013] The advantages of this utility model are: fast pipe clamping and alignment speed, no damage to the outer wall of the pipe, and convenient placement and transportation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model when clamping a pipe.

[0015] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of the mouth-aligning device of this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0019] 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.

[0020] In the description of the embodiments of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, if terms such as "first" or "second" appear in the description of this invention, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0022] As shown in the attached diagram, this utility model includes an upper gripper 1, a lower gripper 2, and a lifting and tightening mechanism. One end of the upper jaw 1 and the lower jaw 2 are movably connected by pin A 14. A set of positioning blocks 3 are respectively set in the upper jaw 1 and the lower jaw 2. The positioning blocks 3 have welding clearance grooves 4. The bottom of the lower jaw 2 is provided with a stabilizing seat 5. The lifting and tightening mechanism is installed at the other end of the upper jaw 1 and the lower jaw 2. The lifting and tightening mechanism drives the upper jaw 1 and the lower jaw 2 to close.

[0023] Both the upper jaw 1 and the lower jaw 2 are composed of a pair of arc-shaped rods, and the positioning block 3 is installed between the pair of arc-shaped rods.

[0024] A protective pad 6 is provided on the end face of the positioning block 3.

[0025] The welding clearance groove 4 is a U-shaped groove with beveled openings 7 on both sides. When the welding torch is inserted into the welding clearance groove 4, the visible area inside the welding clearance groove 4 is increased, making the welding more accurate.

[0026] The lifting and tightening mechanism includes a portal frame 8 and a jack 9. The other end of the upper jaw 1 is provided with a lifting base plate 10. Guide side plates 11 are provided on both sides of the lifting base plate 10. The jack 9 is installed on the lifting base plate 10. The lifting base plate 10 is located inside the portal frame 8. The working end of the jack 9 is connected to the middle of the crossbeam of the portal frame 8. The bottom opening of the portal frame 8 has a through pin hole. A pair of connecting lugs 12 are provided on the lower jaw 2. The pin hole of the portal frame 8 is connected to the pin hole of the connecting lug 12. The B pin shaft 13 is inserted to install the bottom of the portal frame 8 onto the pair of connecting lugs 12.

[0027] Both pin A 14 and pin B 13 have anti-detachment holes at their insertion ends, into which cotter pins are inserted. The cotter pins restrict the position of pin A 14 or pin B 13, preventing them from falling out.

[0028] The lower jaw 2 has a double ear seat 15 on its arc-shaped rod. The upper jaw 1 has an arc-shaped rod inside the double ear seat 15 and a through pin hole that communicates with the shaft hole of the double ear seat 15. The A pin 14 is inserted into the shaft hole and the through pin hole.

[0029] The top of the stabilizing base 5 is equipped with a pair of connecting plates, which are welded to the inner wall of the lower jaw 2. When the mouthpiece is placed on a flat surface or during transportation, the stabilizing base 5 provides auxiliary support to keep it in a vertical position and prevent it from rolling.

[0030] Protective pad 6 is made of polyurethane material.

[0031] Example 1: As shown in the attached document Figure 1 As shown, the worker initially connects the two pipe sections 100 to be welded, places the upper clamp 1 and lower clamp 2 on both sides of the weld seam of the pipe 100, connects the pin hole at the bottom of the portal frame 8 with the pin hole of the connecting lug 12, inserts the B pin 13, and installs the bottom of the portal frame 8 on the pair of connecting lugs 12. The worker then activates the jack 9 to lift the portal frame 8 upwards, pulling the connecting lugs 12 upwards. The upper clamp 1 and lower clamp 2 close and clamp the pipe 100, and the protective pad 6 on the positioning block 3 makes close contact with the outer wall of the pipe 100 to avoid damage to the outer wall of the pipe 100. After the pipe 100 is positioned, the worker uses a welding torch to weld the gap between the two pipe sections 100. During welding, the welding torch can be inserted into the welding clearance groove 4 to weld the area blocked by the positioning block 3. After welding, the jack 9 is reset, the B pin 13 is pulled out, the connection between the upper clamp 1 and lower clamp 2 is released, the upper clamp 1 is flipped up, and the connector can be removed.

Claims

1. A pipe external welding fitting, characterized in that... It includes an upper gripper (1), a lower gripper (2), and a lifting and tightening mechanism. One end of the upper jaw (1) and the lower jaw (2) are movably connected by pin A (14). A set of positioning blocks (3) are respectively set in the upper jaw (1) and the lower jaw (2). The positioning blocks (3) have welding clearance grooves (4). The bottom of the lower jaw (2) is provided with a stabilizing seat (5). The lifting and tightening mechanism is installed at the other end of the upper jaw (1) and the lower jaw (2). The lifting and tightening mechanism drives the upper jaw (1) and the lower jaw (2) to close.

2. The pipe external welding fitting according to claim 1, characterized in that, Both the upper jaw (1) and the lower jaw (2) are composed of a pair of arc-shaped rods, and the positioning block (3) is installed between the pair of arc-shaped rods.

3. A pipe external welding fitting according to claim 2, characterized in that, A protective pad (6) is provided on the end face of the positioning block (3).

4. A pipe external welding fitting according to claim 3, characterized in that, The welding clearance groove (4) is a U-shaped groove, and oblique openings (7) are opened on both sides of the welding clearance groove (4).

5. A pipe external welding fitting according to claim 4, characterized in that, The lifting and tightening mechanism includes a portal frame (8) and a jack (9). The other end of the upper jaw (1) is provided with a lifting base plate (10). Guide side plates (11) are provided on both sides of the lifting base plate (10). The jack (9) is installed on the lifting base plate (10). The lifting base plate (10) is located inside the portal frame (8). The working end of the jack (9) is connected to the middle of the crossbeam of the portal frame (8). The bottom opening of the portal frame (8) has a through pin hole. A pair of connecting lugs (12) are provided on the lower jaw (2). The pin hole of the portal frame (8) is connected to the pin hole of the connecting lug (12). The B pin shaft (13) is inserted to install the bottom of the portal frame (8) on a pair of connecting lugs (12).

6. A pipe external welding fitting according to claim 5, characterized in that, The insertion ends of pin A (14) and pin B (13) are respectively provided with anti-detachment pin holes, and cotter pins are inserted into the anti-detachment pin holes.

7. A pipe external welding fitting according to claim 2, characterized in that, The lower jaw (2) has a double ear seat (15) on its arc-shaped rod. The upper jaw (1) has an arc-shaped rod inside the double ear seat (15) and a through hole that communicates with the shaft hole of the double ear seat (15). The A pin (14) is inserted into the shaft hole and the through hole.

8. A pipe external welding fitting according to claim 1, characterized in that, A pair of connecting plates are provided on the top of the stabilizer (5), and the connecting plates are welded to the inner wall of the lower jaw (2).

9. A pipe external welding fitting according to claim 3, characterized in that, The protective pad (6) is made of polyurethane material.

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