Prefabricated pipe welding auxiliary tool

Abstract

The utility model provides a prefabricated pipe welding auxiliary tool which is characterized in that a placing surface is arranged at the top of a base, and a flange to be welded is placed on the placing surface; the mounting rack is L-shaped, the horizontally arranged part of the mounting rack is arranged at the top end of the vertically arranged part, the bottom end of the vertically arranged part of the mounting rack is fixed on the placing surface, and the top end of the horizontally arranged part of the mounting rack is arranged above the placing surface; the auxiliary frame is arranged at the top end of the horizontally-arranged part of the mounting frame, an auxiliary face is arranged on the auxiliary frame and is parallel to the placing face, and the pipe to be welded abuts against the auxiliary face. By arranging the placing face and the auxiliary face which are perpendicular to each other, the flange and the pipe are perpendicular to each other, meanwhile, the pipe can lean against the auxiliary face to be vertically arranged, the two hands of a constructor are liberated, the construction efficiency is improved, and the parallel design of the L-shaped installation frame and the auxiliary face forms a rigid positioning structure; visual errors and manual jitter influences are effectively eliminated, and later adjustment is further reduced.

Description

Technical Field

[0001] This utility model belongs to the field of auxiliary tooling technology, and more specifically, it relates to an auxiliary tooling for welding prefabricated pipes. Background Technology

[0002] In current indoor construction work, especially in commercial and industrial properties, it is common to encounter situations where pipe ends need to be welded to flanges. Before welding, the pipes and flanges are often pre-welded before installation. When welding the pipes and flanges, the worker directly holds the pipe to be welded and aligns it with the inner hole of the flange, then uses their other hand to hold the welding torch and perform the weld.

[0003] However, due to visual errors and the shaking of the construction workers' hands, the verticality of the pipes and flanges is not ideal and needs to be adjusted later. This not only increases the labor intensity of the construction workers, but also reduces the construction efficiency of the pipeline network. Utility Model Content

[0004] The purpose of this utility model is to provide an auxiliary tooling for welding prefabricated pipes, so as to reduce the labor intensity of workers and improve construction efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A prefabricated pipe welding auxiliary fixture is provided, comprising a base, a mounting frame, and an auxiliary frame. The base has a placement surface at its top, on which the flange to be welded is placed. The mounting frame is L-shaped, with its horizontal portion positioned at the top of its vertical portion, and the bottom of the vertical portion fixed to the placement surface. The top of the horizontal portion is positioned above the placement surface. The auxiliary frame is positioned at the top of the horizontal portion of the mounting frame, and has an auxiliary surface parallel to the placement surface. The pipe to be welded abuts against the auxiliary surface.

[0006] In one possible implementation, the base is plate-shaped, and the top surface of the base is the placement surface.

[0007] In one possible implementation, the base has multiple perforated holes.

[0008] In one possible implementation, the mounting bracket includes a mounting vertical rod, a mounting horizontal rod, and a connecting elbow. The bottom end of the mounting vertical rod is fixed to the placement surface, the top end of the mounting vertical rod is detachably connected to a first end of the connecting elbow, one end of the mounting horizontal rod is detachably connected to a second end of the connecting elbow, and the auxiliary bracket is mounted on the other end of the mounting horizontal rod relative to the end connected to the connecting elbow.

[0009] In one possible implementation, the connecting elbow has a first internal thread, the top of the mounting vertical rod has a first threaded segment, and one end of the mounting horizontal rod has a second threaded segment. Both the first threaded segment and the second threaded segment are adapted to the first internal thread, and the first threaded segment and the second threaded segment are respectively screwed to both ends of the connecting elbow.

[0010] In one possible implementation, the mounting pole includes a first pole and an extended pole. The bottom end of the first pole is welded to the placement surface, and the top end of the first pole is provided with a third threaded section. The first threaded section is located at the top end of the extended pole, and the inner wall of the extended pole is provided with a second internal thread. The third threaded section is adapted to the second internal thread and is screwed into the extended pole.

[0011] In one possible implementation, the mounting crossbar includes a first crossbar and an extended crossbar. One end of the first crossbar is welded to the auxiliary frame, and the other end of the first crossbar is provided with a fourth threaded section. The first threaded section is located at one end of the extended crossbar, and the inner wall of the extended crossbar is provided with a second internal thread. The third threaded section is adapted to the second internal thread and is screwed into the extended crossbar.

[0012] In one possible implementation, the auxiliary frame is L-shaped and includes a first plate and a second plate arranged perpendicularly to each other. The outer wall of the first plate is welded to the top of the mounting crossbar, and the inner walls of the first plate and the second plate form the auxiliary surface.

[0013] In one possible implementation, the auxiliary frame is selected as an angle steel, and the length of the angle steel is less than twice the distance between the mounting crossbar and the placement surface, and the connection between the angle steel and the first crossbar is located in the middle of the angle steel.

[0014] The beneficial effects of the prefabricated pipe welding auxiliary tooling provided by this utility model are as follows: Compared with the prior art, this utility model sets up mutually perpendicular placement surfaces and auxiliary surfaces. The flange is placed on the placement surface and the pipe abuts against the auxiliary surface, making the flange and pipe perpendicular to each other. At the same time, since the placement surface is horizontally arranged and the auxiliary surface is vertically arranged, the pipe can lean against the auxiliary surface and be arranged vertically, freeing up the hands of construction workers and improving construction efficiency. The parallel design of the L-shaped mounting bracket and the auxiliary surface forms a rigid positioning structure, which enables the pipe and the inner hole of the flange to be automatically aligned, effectively eliminating visual errors and the influence of manual shaking, further reducing the need for later adjustments. At the same time, the standardized positioning process shortens the alignment time, making it suitable for welding large batches of prefabricated pipes. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the prefabricated pipe welding auxiliary tooling provided in an embodiment of this utility model from one angle;

[0017] Figure 2 This is a structural schematic diagram of the prefabricated pipe welding auxiliary tooling provided in an embodiment of the present utility model from another angle;

[0018] Figure 3 This is a schematic diagram of the structure of the extended vertical tube provided in an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the extended horizontal tube provided in an embodiment of the present utility model.

[0020] The labels for the attached figures are as follows:

[0021] 1. Base; 2. Mounting bracket; 3. Auxiliary bracket;

[0022] 101. Placement surface; 102. Hole opening;

[0023] 201. Install vertical bar; 202. Install horizontal bar; 203. Connect elbow; 204. First vertical bar; 205. Extended vertical pipe; 206. Third threaded section; 207. First horizontal bar; 208. Extended horizontal pipe; 209. Fourth threaded section; 210. First threaded section; 211. Second threaded section;

[0024] 301, Auxiliary surface; 302, First plate; 303, Second plate. Detailed Implementation

[0025] To make the technical problem to be solved, the technical solution, and the beneficial effects 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 only used to explain this utility model and are not intended to limit this utility model.

[0026] It should be further noted that the accompanying drawings and embodiments of this utility model mainly describe the concept of this utility model. Based on this concept, some specific forms and settings of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this utility model, they can implement the above-mentioned specific forms and settings in a well-known manner.

[0027] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0028] The terms “length”, “width”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, and “outer” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0030] The auxiliary tooling for welding prefabricated pipes provided by this utility model will now be described.

[0031] Please refer to the following: Figures 1 to 4 The prefabricated pipe welding auxiliary fixture includes a base 1, a mounting frame 2, and an auxiliary frame 3. The base 1 has a placement surface 101 on its top, on which the flange to be welded is placed. The mounting frame 2 is L-shaped, with its horizontal portion at the top of its vertical portion and its bottom fixed to the placement surface 101. The top of the horizontal portion of the mounting frame 2 is above the placement surface 101. The auxiliary frame 3 is located at the top of the horizontal portion of the mounting frame and has an auxiliary surface 301 that is parallel to the placement surface 101. The pipe to be welded abuts against the auxiliary surface 301.

[0032] The beneficial effects of the prefabricated pipe welding auxiliary tooling provided in this embodiment are as follows: Compared with the prior art, the prefabricated pipe welding auxiliary tooling provided in this embodiment sets mutually perpendicular placement surfaces 101 and auxiliary surfaces 301. The flange is placed on the placement surface 101, and the pipe abuts against the auxiliary surface 301, so that the flange and the pipe are perpendicular to each other. At the same time, since the placement surface 101 is arranged horizontally and the auxiliary surface 301 is arranged vertically, the pipe can lean against the auxiliary surface 301 and be arranged vertically, freeing up the hands of construction workers and improving construction efficiency. The parallel design of the L-shaped mounting bracket 2 and the auxiliary surface 301 forms a rigid positioning structure, so that the pipe and the inner hole of the flange are automatically aligned, effectively eliminating visual errors and the influence of manual shaking, further reducing the need for later adjustments. At the same time, the standardized positioning process shortens the alignment time and is suitable for welding large batches of prefabricated pipes.

[0033] In this embodiment, the base 1 is plate-shaped, and the top surface of the base 1 is the placement surface 101. The plate-shaped base 1 provides a stable support plane to prevent flange displacement; the planar contact reduces local stress concentration and protects the flatness of the flange surface.

[0034] As a preferred technical solution, the base 1 is provided with multiple hollow holes 102. The hollow hole 102 design reduces the overall weight of the tooling and reduces the difficulty of handling; the debris generated during welding can fall off naturally through the hollow holes 102, avoiding accumulation that affects positioning accuracy.

[0035] like Figure 2 As shown, the mounting frame 2 includes a mounting vertical rod 201, a mounting horizontal rod 202, and a connecting elbow 203. The bottom end of the mounting vertical rod 201 is fixed to the placement surface 101. The top end of the mounting vertical rod 201 is detachably connected to the first end of the connecting elbow 203. One end of the mounting horizontal rod 202 is detachably connected to the second end of the connecting elbow 203. An auxiliary frame 3 is located at the other end of the mounting horizontal rod 202, relative to the end connected to the connecting elbow 203. The modular, detachable structure facilitates transportation and on-site assembly; by adjusting the relative positions of the vertical and horizontal rods, it adapts to the welding requirements of flanges with different pipe diameters.

[0036] Combination Figure 3 and Figure 4As shown, the connecting elbow 203 has a first internal thread, the top of the mounting vertical rod 201 has a first threaded section 210, and one end of the mounting horizontal rod 202 has a second threaded section 211. Both the first threaded section 210 and the second threaded section 211 are adapted to the first internal thread. The first threaded section 210 and the second threaded section 211 are screwed onto both ends of the connecting elbow 203, respectively. The threaded connection ensures the rigid fixation of the mounting bracket 2, eliminating the risk of shaking; the standardized threaded interface simplifies the parts replacement process and reduces maintenance costs. Simultaneously, by changing the threaded length of the first threaded section 210 within the connecting elbow 203, the distance from the auxiliary frame 3 to the base 1 can be changed, adapting to the welding of flanges and pipe fittings of different thicknesses. By changing the threaded length of the second threaded section 211 within the connecting elbow 203, the distance from the auxiliary frame 3 to the mounting vertical rod 201 can be changed, enabling the welding of flanges and pipe fittings of different diameters, thus improving the applicability of the prefabricated pipe welding auxiliary tooling of this invention.

[0037] Furthermore, the mounting rod 201 includes a first vertical rod 204 and an extended vertical tube 205. The bottom end of the first vertical rod 204 is welded to the placement surface 101, and the top end of the first vertical rod 204 is provided with a third threaded section 206. The first threaded section 210 is located at the top end of the extended vertical tube 205, and the inner wall of the extended vertical tube 205 is provided with a second internal thread. The third threaded section 206 is adapted to the second internal thread and is screwed into the extended vertical tube 205. The extended vertical tube 205 enables stepless height adjustment of the mounting bracket 2, meeting the positioning requirements of flanges of different thicknesses.

[0038] Meanwhile, the mounting crossbar 202 includes a first crossbar 207 and an extended crossbar 208. An auxiliary frame 3 is welded to one end of the first crossbar 207, and a fourth threaded section 209 is provided at the other end. A first threaded section 210 is located at one end of the extended crossbar 208, and a second internal thread is provided on the inner wall of the extended crossbar 208. A third threaded section 206 is adapted to the second internal thread and is screwed into the extended crossbar 208. The extended crossbar 208 expands the lateral adjustment range of the auxiliary frame 3 and is suitable for welding large-size flanges; the threaded connection maintains the stability of the extended structure.

[0039] like Figure 1 and Figure 2 As shown, the auxiliary frame 3 is L-shaped and includes a first plate 302 and a second plate 303 arranged perpendicularly to each other. The outer wall of the first plate 302 is welded to the top of the mounting crossbar 202, and the inner walls of the first plate 302 and the second plate 303 are auxiliary surfaces 301. The L-shaped auxiliary surfaces 301 form a bidirectional positioning reference and simultaneously constrain the axial and radial positions of the pipe to prevent the pipe from slipping during welding.

[0040] Finally, the auxiliary frame 3 is made of angle steel, and the length of the angle steel is less than twice the distance between the mounting crossbar 202 and the placement surface 101. The connection between the angle steel and the first crossbar 207 is located in the middle of the angle steel. The angle steel structure has both lightweight and high strength characteristics; the middle fixing method disperses welding stress and prevents the auxiliary frame 3 from deforming and failing.

[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An auxiliary tooling for welding precast pipes, characterized in that, include: The base (1) has a horizontally arranged placement surface (101) on top, and the flange to be welded is placed on the placement surface (101); The mounting bracket (2) is L-shaped. The horizontal part of the mounting bracket (2) is located at the top of the vertical part, and the bottom of the vertical part of the mounting bracket (2) is fixed on the placement surface (101). The top of the horizontal part of the mounting bracket (2) is located above the placement surface (101). An auxiliary frame (3) is located at the top of the horizontally positioned part of the mounting frame. An auxiliary surface (301) is provided on the auxiliary frame (3). The auxiliary surface (301) is parallel to the placement surface (101). The pipe to be welded abuts against the auxiliary surface (301).

2. The prefabricated pipe welding auxiliary tooling as described in claim 1, characterized in that: The base (1) is plate-shaped, and the top surface of the base (1) is the placement surface (101).

3. The prefabricated pipe welding auxiliary tooling as described in claim 2, characterized in that: The base (1) has multiple hollow holes (102).

4. The prefabricated pipe welding auxiliary tooling as described in claim 3, characterized in that: The mounting frame (2) includes a mounting vertical rod (201), a mounting horizontal rod (202), and a connecting elbow (203). The bottom end of the mounting vertical rod (201) is fixed on the placement surface (101). The top end of the mounting vertical rod (201) is detachably connected to the first end of the connecting elbow (203). One end of the mounting horizontal rod (202) is detachably connected to the second end of the connecting elbow (203). The auxiliary frame (3) is located at the other end of the mounting horizontal rod (202), relative to the end connected to the connecting elbow (203).

5. The prefabricated pipe welding auxiliary tooling as described in claim 4, characterized in that: The connecting elbow (203) has a first internal thread, the top of the mounting vertical rod (201) has a first threaded section (210), and one end of the mounting horizontal rod (202) has a second threaded section (211). The first threaded section (210) and the second threaded section (211) are both adapted to the first internal thread, and the first threaded section (210) and the second threaded section (211) are respectively screwed to both ends of the connecting elbow (203).

6. The prefabricated pipe welding auxiliary tooling as described in claim 5, characterized in that: The mounting rod (201) includes a first rod (204) and an extended vertical tube (205). The bottom end of the first rod (204) is welded to the placement surface (101), and the top end of the first rod (204) is provided with a third threaded section (206). The first threaded section (210) is provided at the top end of the extended vertical tube (205), and the inner wall of the extended vertical tube (205) is provided with a second internal thread. The third threaded section (206) is adapted to the second internal thread and is screwed into the extended vertical tube (205).

7. The prefabricated pipe welding auxiliary tooling as described in claim 6, characterized in that: The mounting crossbar (202) includes a first crossbar (207) and an extended crossbar (208). The auxiliary frame (3) is welded to one end of the first crossbar (207), and a fourth threaded section (209) is provided at the other end of the first crossbar (207). The first threaded section (210) is provided at one end of the extended crossbar (208), and a second internal thread is provided on the inner wall of the extended crossbar (208). The third threaded section (206) is adapted to the second internal thread and is screwed into the extended crossbar (208).

8. The prefabricated pipe welding auxiliary tooling as described in claim 7, characterized in that: The auxiliary frame (3) is L-shaped and includes a first plate (302) and a second plate (303) arranged perpendicularly to each other. The outer wall of the first plate (302) is welded to the top of the mounting crossbar (202), and the inner walls of the first plate (302) and the second plate (303) are the auxiliary surface (301).

9. The auxiliary tooling for welding precast pipes as described in claim 8, characterized in that: The auxiliary frame (3) is made of angle steel, and the length of the angle steel is less than twice the distance between the mounting crossbar (202) and the placement surface (101). The connection between the angle steel and the first crossbar (207) is located in the middle of the angle steel.

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