Pipe and electrofusion fitting welding fixing device

Abstract

The utility model discloses a pipe and electric melting pipe fitting welding fixing device, including fixed base, the fixed base is apart from being used for fixing the fixed module group of pipe on left and right respectively, fixed module group includes connecting base, first clamping piece and second clamping piece, connecting base is rotatably arranged relative to fixed base, first clamping piece is connected with connecting base, second clamping piece is detachably connected with first clamping piece, and pipe is clamped and fixed between second clamping piece and first clamping piece. Since the connecting base of fixed module group is rotatably arranged relative to the fixed base, when it is necessary to adapt to electric melting pipe fittings of different angles, the relative angle of the two fixed module groups can be changed by rotating the connecting base, and then the included angle between the two pipes clamped and fixed can be adjusted. This design breaks the limitation of the fixed included angle of the existing tool, so that the same device can adapt to various specifications of elbow pipe head electric melting pipe fittings, greatly improving the versatility and application range of the tool.

Description

Technical Field

[0001] This utility model relates to the field of pipe welding and fixing technology, and in particular to a pipe and electrofusion fitting welding and fixing device. Background Technology

[0002] In the field of pipeline engineering, the insertion welding of pipes and electrofusion fittings is a key process for achieving pipeline connections, and the quality of the connection directly affects the sealing performance, pressure resistance, and service life of the pipeline system. During this welding process, ensuring that the pipes on both sides maintain a preset angle with the electrofusion fitting is crucial, as the accuracy of the angle directly determines the routing precision, stress distribution, and overall structural stability of the pipeline after welding.

[0003] To ensure the accuracy of the aforementioned included angle, specialized fixing tools are typically used to position and secure the pipes on both sides. The core function of these tools is to limit the displacement and angular changes of the pipes during the welding operation, keeping the relative position between the pipes and the electrofusion fittings stable. This provides a reliable reference for the welding process and ensures that the welded joint meets design standards.

[0004] However, in practical applications, electrofusion fittings exhibit diverse specifications, especially those used as bends. Their bending angles are designed in various types to meet different engineering requirements, such as the common 90°, 45°, and other special angles. Different specifications of bend fittings require different included angles between the two sides of the fitting to accommodate different pipeline routing designs.

[0005] Current tools for securing pipes have significant limitations: the included angle of existing tools is usually fixed and cannot be adjusted according to the specifications of electrofusion fittings. This means that when dealing with electrofusion fittings at different angles, construction workers must be equipped with fixing tools corresponding to the included angle, and each type of electrofusion fitting requires a dedicated fixing tool. This situation not only increases the procurement and storage costs of construction equipment but also prolongs construction preparation time and reduces construction efficiency. On the construction site, workers need to frequently change tools to adapt to different operational needs. Especially in complex pipeline laying scenarios, frequent tool changes can easily lead to cumbersome operations, delays, and other problems, seriously affecting the convenience and practicality of construction. Utility Model Content

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a welding and fixing device for pipes and electrofusion fittings.

[0007] A pipe and electrofusion fitting welding and fixing device designed for this purpose includes a fixing base, on which fixing modules for fixing pipes are respectively provided on the left and right sides;

[0008] The fixing module includes a connecting base, a first clamping member, and a second clamping member;

[0009] The connecting base is rotatably disposed relative to the fixed base, the first clamping member is connected to the connecting base, the second clamping member is detachably connected to the first clamping member, and the pipe is clamped and fixed between the second clamping member and the first clamping member.

[0010] Preferably, the connecting base is provided with a plurality of locking holes arranged along its rotation circumference;

[0011] The fixed base is provided with at least two locking bolts at the position corresponding to the connecting base. The two locking bolts are inserted into any two locking holes, and the locking bolts are threaded with locking nuts.

[0012] The connecting base is clamped and fixed between the fixed base and the locking nut.

[0013] Preferably, the fixed base is provided with an adjustment groove, and the locking bolt passes through the adjustment groove and the locking hole from bottom to top.

[0014] Preferably, the connecting base is provided with a mounting slot, and the first clamping member is provided with a mounting block that can be movably inserted into the mounting slot;

[0015] The two side walls of the connecting base are provided with threaded holes that communicate with the mounting slot, and the two sides of the mounting block are respectively provided with positioning holes that communicate with the threaded holes.

[0016] The threaded hole is threadedly connected to a limiting bolt, and the limiting bolt is at least partially inserted into the positioning hole.

[0017] Preferably, the first clamping member is provided with a first connecting ear seat on each of its two sides;

[0018] The second clamping member is provided with a second connecting lug on each side;

[0019] The first connecting ear and the second connecting ear are fitted together and connected to each other using fasteners.

[0020] Compared with existing technologies, this invention features a rotating connecting base for the fixed module relative to the fixed base. When adapting to electrofusion fittings with different angles, the relative angle between the two fixed modules can be changed by rotating the connecting base, thereby adjusting the included angle between the two clamped pipes. This design breaks the limitations of existing tools with fixed included angles, allowing the same device to adapt to various specifications of bend head electrofusion fittings, significantly improving the tool's versatility and applicability. Attached Figure Description

[0021] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model;

[0022] Figure 2 This is the second three-dimensional structural schematic diagram of the present invention;

[0023] Figure 3 This is an exploded structural diagram of the present invention;

[0024] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0025] Figure 5 This is a cross-sectional structural diagram of the present invention. Detailed Implementation

[0026] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0027] 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 application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0028] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0029] In this document, the term "implementation" means that a specific feature, structure, or characteristic described in connection with an implementation may be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a separate or alternative implementation mutually exclusive with other implementations. It will be explicitly and implicitly understood by those skilled in the art that the implementations described herein can be combined with other implementations.

[0030] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0031] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more (including two groups), and "multiple pieces" refers to two or more (including two pieces).

[0032] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., 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 the embodiments of this application 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 the embodiments of this application.

[0033] In the description of the embodiments of this application, unless otherwise explicitly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0034] See Figures 1-5 A pipe and electrofusion fitting welding and fixing device includes a fixing base 10, on which fixing modules 20 for fixing pipes 30 are respectively provided on the left and right sides; the fixing module 20 includes a connecting base 210, a first clamping member 220 and a second clamping member 230; the connecting base 210 is rotatably disposed relative to the fixing base 10, the first clamping member 220 is connected to the connecting base 210, the second clamping member 230 is detachably connected to the first clamping member 220, and the pipe 30 is clamped and fixed between the second clamping member 230 and the first clamping member 220.

[0035] The working principle of the pipe and electrofusion fitting welding and fixing device is as follows:

[0036] When performing the insertion welding operation between pipe 30 and electrofusion fitting 40, firstly, based on the preset included angle of the electrofusion fitting to be welded, the relative angle between the two fixed modules on the left and right sides of the fixed base is adjusted by rotating the connecting base of the fixed base to match the included angle of the electrofusion fitting. After the angle adjustment is completed, the two pipes to be welded are placed on the corresponding first clamping pieces, and then the second clamping piece is connected and fixed to the first clamping piece, so that the pipes are firmly clamped between the second clamping piece and the first clamping piece, thereby ensuring that the pipes will not shift or change angle during the welding process, maintaining the required included angle with the electrofusion fitting, and providing a stable and reliable positioning foundation for subsequent insertion welding.

[0037] See Figure 4 The connecting base 210 has multiple locking holes 211 arranged along its circumference of rotation. The fixed base 10 has at least two locking bolts 110 corresponding to the position of the connecting base 210. The two locking bolts 110 are inserted into any two locking holes 211, and each locking bolt 110 is threaded with a locking nut 120. The connecting base 210 is clamped and fixed between the fixed base 10 and the locking nut 120. When the connecting base of the left and right fixed modules on the fixed base is rotated according to the preset angle of the electrofusion fitting to be welded, and the relative angle between the two fixed modules is adjusted to match the angle of the electrofusion fitting, the connecting base needs to be locked and fixed. Specifically, at least two locking bolts on the fixed base are inserted into any two of the multiple locking holes arranged along the circumference of the connecting base. After insertion, the locking nut is tightened on each locking bolt. Through the cooperation of the locking nut and the fixed base, the connecting base is tightly clamped and fixed between the fixed base and the locking nut. This locking process effectively restricts the rotation of the connecting base, ensuring that the adjusted angle remains unchanged during subsequent pipe clamping and welding, further guaranteeing the stability of the angle between the pipe and the electrofusion fitting. When the angle needs to be readjusted, simply loosen the locking nut, pull the locking bolt out of the locking hole, rotate the connecting base to the desired angle, and then insert the locking bolt and tighten the locking nut as described above. This design achieves both flexible adjustment of the connecting base angle and reliable fixation of the adjusted angle, providing a more robust guarantee for stable pipe clamping and precise welding.

[0038] Furthermore, the multiple locking holes 211 are arranged according to the clamp of the electrofusion fitting 40, that is, the distance between two adjacent locking holes 211 is set according to the rotation angle to be adjusted.

[0039] See Figure 4The fixed base 10 is provided with an adjustment groove 100, and the locking bolt 110 passes through the adjustment groove 100 and the locking hole 211 from bottom to top. The adjustment groove 100 allows the locking bolt 110 to move and adjust within the adjustment groove 100, thereby allowing the connecting base 210 to move and adjust relative to the fixed base 10, changing the position of the pipe 30 to meet the insertion and mating requirements of the pipe 30 with electrofusion fittings 40 of different specifications.

[0040] See Figure 4 The connecting base 210 is provided with a mounting slot 212, and the first clamping member 220 is provided with a mounting block 221 that is movably inserted into the mounting slot 212. The two side walls of the connecting base 210 are provided with threaded holes 213 that communicate with the mounting slot 212. The mounting block 221 has positioning holes 222 on both sides that communicate with the threaded holes 213. The threaded holes 213 are threadedly connected to limit bolts 214, and the limit bolts 214 are at least partially inserted into the positioning holes 222. The first clamping member 220 is assembled by a plug-in method. This assembly structure allows users to replace the corresponding first clamping member according to the diameter of different pipes to meet the fixing requirements of different pipe diameters.

[0041] See Figure 4 The first clamping member 220 has first connecting lugs 223 on both sides; the second clamping member 230 has second connecting lugs 231 on both sides; the first connecting lugs 223 and the second connecting lugs 231 fit together and are connected to each other by fasteners 240. The fasteners 240 can be bolts, i.e., the first clamping member has a threaded hole, the second clamping member has a mounting hole, and the bolt passes through the mounting hole and is threaded into the threaded hole.

[0042] 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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for welding and fixing pipes and electrofusion fittings, characterized in that: Includes a fixed base (10), on which fixed modules (20) for fixing pipes (30) are respectively provided on the left and right sides; The fixed module (20) includes a connecting base (210), a first clamping member (220), and a second clamping member (230); The connecting base (210) is rotatably disposed relative to the fixed base (10), the first clamping member (220) is connected to the connecting base (210), the second clamping member (230) is detachably connected to the first clamping member (220), and the tube (30) is clamped and fixed between the second clamping member (230) and the first clamping member (220).

2. The pipe and electrofusion fitting welding and fixing device according to claim 1, characterized in that: The connecting base (210) is provided with a plurality of locking holes (211) arranged along its rotation circumference; The fixed base (10) is provided with at least two locking bolts (110) at the position corresponding to the connecting base (210). The two locking bolts (110) are inserted into any two locking holes (211), and the locking bolts (110) are threaded with locking nuts (120). The connecting base (210) is clamped and fixed between the fixed base (10) and the locking nut (120).

3. The pipe and electrofusion fitting welding and fixing device according to claim 2, characterized in that: The fixed base (10) is provided with an adjustment groove (100), and the locking bolt (110) is inserted from bottom to top into the adjustment groove (100) and the locking hole (211).

4. The pipe and electrofusion fitting welding and fixing device according to claim 1, characterized in that: The connecting base (210) is provided with a mounting slot (212), and the first clamping member (220) is provided with a mounting block (221) that is movably inserted into the mounting slot (212); The connecting base (210) has threaded holes (213) on both sides that communicate with the mounting slot (212), and the mounting plug (221) has positioning holes (222) on both sides that communicate with the threaded holes (213). The threaded hole (213) is threadedly connected to a limiting bolt (214), and the limiting bolt (214) is at least partially inserted into the positioning hole (222).

5. The pipe and electrofusion fitting welding and fixing device according to claim 1, characterized in that: The first clamping member (220) is provided with a first connecting ear (223) on both sides; The second clamping member (230) is provided with a second connecting ear (231) on both sides; The first connecting ear (223) and the second connecting ear (231) are fitted together and connected to each other by fasteners (240).

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