Nut welding structure in pipe

Abstract

The utility model discloses an in-pipe nut welding structure, which relates to the technical field of welding, and comprises a pipe mother piece, a base plate, a nut and an auxiliary piece, and the base plate is positioned in a pipe cavity of the pipe mother piece; the nut is connected to the base plate to form a fixing plate, the auxiliary part is detachably installed on the fixing plate and the tubular part, and the face, away from the nut, of the base plate is connected with the inner wall of the tubular part in an attached mode. According to the technical scheme, the base plate is additionally arranged, the nut is connected to the base plate to form the fixing plate, the fixing plate can be inserted into the pipe cavity of the pipe-type parent part, and then the auxiliary part assists the fixing plate to be attached to the inner wall of the pipe-type parent part so that the fixing plate can be connected with the pipe-type parent part in an attached mode. And therefore, the nut is fixed in the pipe parent part through the base plate. Therefore, a bottom hole with an overlarge aperture does not need to be formed in the pipe parent part to fix the nut, and the precision of the welding structure of the nut in the pipe is improved.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, and in particular to a welding structure for an internal nut in a pipe. Background Technology

[0002] Welding nuts is a welding technique that connects and fixes nuts to a substrate by welding. Welding nuts inside pipes is a common operation.

[0003] The existing pipe nut welding structure involves setting a pilot hole in the pipe fitting, into which the nut is directly recessed and welded to the pipe fitting. However, because the profile of the pilot hole on the pipe fitting needs to be larger than the outer diameter boundary of the nut, the precision of the pipe nut welding structure is not high. Utility Model Content

[0004] The main purpose of this invention is to propose an internal nut welding structure, which aims to solve the problem of low precision in existing internal nut welding structures.

[0005] To achieve the above objectives, the present invention proposes an internal nut welding structure, comprising:

[0006] A female tube fitting, wherein the female tube fitting is provided with a cavity and a through hole;

[0007] A gasket, the gasket being located inside the cavity of the female tube, the gasket being provided with a connection hole;

[0008] A nut, having a threaded hole, is connected to the washer to form a fixed plate; and

[0009] An auxiliary component having threads, the auxiliary component passing through the through hole, the threaded hole and the connecting hole, for detachable installation on the fixing plate and the female tube;

[0010] The side of the fixing plate facing away from the nut is fitted and connected to the inner wall of the tube fitting, and the connecting hole communicates with the through hole.

[0011] In some embodiments, the edge of the fixing plate is welded to the inner wall of the tube fitting.

[0012] In some embodiments, the pad includes a support portion and a connecting portion, the connecting portion being connected to the nut, the support portion being bent relative to the connecting portion toward the side wall of the tube fitting, the side of the support portion away from the connecting portion abutting against the inner bottom wall of the tube fitting, the support portion being used to support the connecting portion so that the connecting portion fits against the inner top wall of the tube fitting.

[0013] In some embodiments, the side of the support portion away from the connecting portion is welded and fixed to the edge of the inner sidewall of the tube fitting.

[0014] In some embodiments, the nut includes a first nut, and the number of the first nuts is at least two, with the at least two first nuts spaced apart along the length of the pad; the number of connecting holes corresponds to the number of the first nuts.

[0015] In some embodiments, the nut includes a second nut, which is spaced apart from the first nut in the width direction of the pad.

[0016] In some embodiments, there are two supports, which are arranged opposite to each other at the connection, with the side of the two supports away from the connection abutting against the inner bottom wall of the tube fitting.

[0017] In some embodiments, each nut includes a nut body and a protrusion, the protrusion being disposed protruding relative to the nut body and the protrusion being positioned within a connection hole of the pad; both the nut body and the protrusion are provided with threaded holes.

[0018] In some embodiments, the nut body is welded to the pad near the edge of the pad so that the nut and the connection form the fixing plate.

[0019] In some embodiments, the auxiliary component is a bolt.

[0020] The technical solution of this utility model adds a washer plate, to which the nut is connected to form a fixing plate. The fixing plate can be inserted into the cavity of the pipe fitting, and then auxiliary parts are used to help the fixing plate fit against the inner wall of the pipe fitting, so that the fixing plate and the pipe fitting are closely connected, and the nut is fixed inside the pipe fitting by the washer plate. In this way, it is not necessary to make a bottom hole with an excessively large diameter in the pipe fitting to fix the nut, thus improving the accuracy of the welded structure of the nut inside the pipe. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 the structures shown in these drawings without creative effort.

[0022] Figure 1 A schematic diagram of an embodiment of the pipe nut welding structure provided by this utility model when auxiliary parts are installed;

[0023] Figure 2 A cross-sectional view of an embodiment of the pipe nut welding structure provided by this utility model when auxiliary parts are installed;

[0024] Figure 3 A three-dimensional structural schematic diagram of an embodiment of the pipe nut welding structure provided by this utility model;

[0025] Figure 4 An exploded structural diagram of an embodiment of the nut and washer in the pipe nut welding structure provided by this utility model;

[0026] Figure 5 A cross-sectional view of an embodiment of the nut and washer in the pipe nut welding structure provided by this utility model;

[0027] Figure 6 A schematic diagram of another embodiment of the pipe nut welding structure provided by this utility model, with auxiliary components installed;

[0028] Figure 7 A cross-sectional view of another embodiment of the pipe nut welding structure provided by this utility model when auxiliary parts are installed;

[0029] Figure 8 A schematic diagram of another embodiment of the pipe nut welding structure provided by this utility model, when auxiliary parts are installed;

[0030] Figure 9 This is a cross-sectional view of another embodiment of the pipe nut welding structure provided by this utility model, with auxiliary components installed.

[0031] Explanation of icon numbers:

[0032] 100. Welded structure of nut inside pipe; 10. Pipe fitting; 11. Through hole; 12. Pipe cavity; 20. Washer plate; 21. Support part; 22. Connecting part; 23. Connecting hole; 30. Nut; 31. First nut; 301. Nut body; 302. Protrusion; 303. Threaded hole; 32. Second nut; 40. Auxiliary part; 50. Fixing plate.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] The existing pipe nut welding structure involves setting a pilot hole in the pipe fitting, into which the nut is directly recessed and welded to the pipe fitting. However, because the profile of the pilot hole on the pipe fitting needs to be larger than the outer diameter boundary of the nut, the precision of the pipe nut welding structure is not high.

[0038] This utility model proposes an internal nut welding structure 100. Please refer to [link / reference]. Figures 1 to 9 In one embodiment of this utility model, the pipe-mounted nut welding structure 100 proposed by this utility model includes:

[0039] The female tube 10 is provided with a cavity 12 and a through hole 11;

[0040] The gasket 20 is located inside the cavity 12 of the tube nut 10, and the gasket 20 is provided with a connection hole 23.

[0041] Nut 30, nut 30 having a threaded hole 303, nut 30 is connected to pad 20 to form a fixed plate 50; and

[0042] Auxiliary component 40 has threads and passes through through hole 11, threaded hole 303 and connecting hole 23, so as to be detachably installed on fixed plate 50 and tube nut 10;

[0043] In this embodiment, the side of the pad 20 facing away from the nut 30 is fitted and connected to the inner wall of the tube fitting 10, and the connecting hole 23 communicates with the through hole 11. In one embodiment, the diameter of the through hole 11 can be equal to the inner diameter of the nut 30.

[0044] In one embodiment, the side of the fixing plate 50 facing away from the nut 30 is fitted against the inner wall of the tube fitting 10. The fixing plate 50 is then fixed within the cavity 12 of the tube fitting 10 by welding its edge to the inner wall of the tube fitting 10. The pad 20 can be flat, L-shaped, or U-shaped. A nut 30 is welded to one side of the pad 20, and the edge of the pad 20 is welded to the inner wall of the tube fitting 10, so that the nut 30 is fixed within the cavity 12 of the tube fitting 10 by the pad 20. The tube fitting 10 can be a rectangular hollow tube, a circular hollow tube, a U-shaped tube, or a flat plate.

[0045] The technical solution of this utility model adds a washer plate 20, to which a nut 30 is connected to form a fixing plate 50. The fixing plate 50 can be inserted into the tube nut 10, and then an auxiliary component 40 assists in the fixing plate 50 to fit against the inner wall of the tube nut 10, so that the fixing plate 50 and the tube nut 10 are closely connected, thereby fixing the nut 30 in the tube cavity 12 of the tube nut 10 through the washer plate 20. In this way, it is not necessary to open a bottom hole with an excessively large diameter on the tube nut 10 to fix the nut 30, thus improving the accuracy of the welded structure 100 of the nut inside the tube.

[0046] In one embodiment, the nut 30 can be welded to the washer 20 to form a fixing plate 50. The fixing plate 50 is then inserted into the cavity 12 of the tube 10 from its port. Next, an auxiliary member 40 is screwed in. Then, the auxiliary member 40 is screwed outwards to allow the side of the fixing plate 50 facing away from the nut 30 to fit against the inner top wall of the tube 10. Next, the edge of the fixing plate 50 is welded to the inner wall of the tube 10 so that the nut 30 is connected to the tube 10 via the washer 20. Finally, the entire auxiliary member 40 is unscrewed from the fixing plate 50 and the tube 10. The auxiliary member 40 assists in positioning the fixing plate 50 and the tube 10 so that the side of the fixing plate 50 facing away from the nut 30 fits against the inner top wall of the tube 10.

[0047] Furthermore, the edge of the fixing plate 50 is welded and fixed to the inner wall of the tube 10, and the fixing plate 50 can be fixed in the tube cavity 12 of the tube 10, thereby allowing the nut 30 to be fixed in the tube cavity 12 of the tube 10 through the washer 20.

[0048] Reference Figure 6 and Figure 7 In another embodiment, when the female tube 10 is long, if a flat pad 20 is installed and both sides of the pad 20 are fixed to the female tube 10, the middle part of the pad 20 is prone to sagging severely, and may even detach, making it difficult to install the auxiliary component 40 on the pad 20. Therefore, the pad 20 is L-shaped, including a support portion 21 and a connecting portion 22. The connecting portion 22 is connected to the nut 30. The support portion 21 is bent relative to the connecting portion 22 towards the side wall of the female tube 10. The side of the support portion 21 away from the connecting portion 22 abuts against the inner bottom wall of the female tube 10, supporting the connecting portion 22 so that the connecting portion 22 fits against the inner top wall of the female tube 10. With the support portion 21 abutting against the inner bottom wall of the female tube 10 and supporting the connecting portion 22, the pad 20 is less likely to detach from the female tube 10, thus reducing the likelihood of severe sagging in the middle part of the pad 20.

[0049] In order to minimize damage to the female pipe fitting 10 from the welded parts, the side of the support part 21 away from the connecting part 22 is welded and fixed to the edge of the inner wall of the female pipe fitting 10. The pad 20 can be fixed more stably on the female pipe fitting 10, and the number of welding points is small, so as to ensure that the female pipe fitting 10 is less damaged by the welded parts.

[0050] Reference Figure 2 , Figure 7 and Figure 8 The nut 30 includes a first nut 31, and the number of first nuts 31 is at least two. The at least two first nuts 31 are spaced apart in the length direction of the pad 20; the number of connecting holes 23 corresponds to the number of first nuts 31.

[0051] Multiple first nuts 31 can be welded to a pad 20, and then the pad 20 can be welded into the cavity 12 of the tube nut 10, which makes it easier to fix multiple first nuts 31 into the cavity 12 of the tube nut 10, making them less likely to fall off and easier to install.

[0052] When the female fitting 10 is equipped with two rows of nuts 30, the nuts 30 include a second nut 32, which is spaced apart from the first nut 31 in the width direction of the pad 20.

[0053] In yet another embodiment, reference is made to... Figure 8 and Figure 9 The pad 20 is U-shaped and has two support parts 21. The two support parts 21 are arranged opposite to each other on the connecting part 22. The side of the two support parts 21 away from the connecting part 22 abuts against the inner bottom wall of the tube mother piece 10.

[0054] When the mounting surface of the female pipe fitting 10 is wide and multiple rows of through holes 11 are formed on the female pipe fitting 10, if an L-shaped pad 20 is installed, the L-shaped pad 20 will tilt and droop during the installation of the auxiliary component 40, making it difficult to install the auxiliary component 40. Furthermore, because the female pipe fitting 10 has many holes, its strength is also reduced.

[0055] Therefore, referring to Figure 8 and Figure 9 A U-shaped pad 20 is installed inside the pipe fitting 10. The U-shaped pad 20 includes two support parts 21, which are used to support the top wall of the pipe fitting 10. The U-shaped pad 20 is not easy to tilt or sag, thus ensuring smooth installation of the auxiliary component 40. Moreover, using a U-shaped pad 20 inside the pipe fitting 10 can enhance the structural strength of the pipe fitting 10.

[0056] In some embodiments, each nut 30 includes a nut body 301 and a protrusion 302, the protrusion 302 protruding relative to the nut body 301 and the protrusion 302 being positioned within the connection hole 23 of the pad 20; both the nut body 301 and the protrusion 302 are provided with threaded holes 303.

[0057] The protrusion 302 is inserted into the connection hole 23, and the bottom of the nut body 301 can be welded to the pad 20 so that the nut 30 is firmly fixed on the pad 20.

[0058] Furthermore, referring to Figure 4 and Figure 5 The nut body 301 is welded and fixed to the washer 20 near the edge of the washer 20, so that the nut 30 and the connection form a fixing plate 50. Then the fixing plate 50 is inserted into the cavity 12 of the tube 10 from the port of the tube 10, so that the nut 30 can be installed into the cavity 12 of the tube 10 through the washer 20.

[0059] In one embodiment, reference is made to Figure 1 Auxiliary component 40 is a bolt.

[0060] The fixing plate 50 is inserted into the cavity 12 of the tube 10 from its port. Then, a bolt is screwed in to align the connecting hole 23 of the pad 20 with the through hole 11 of the tube 10. Next, the bolt is screwed outwards a short distance, so that the side of the fixing plate 50 facing away from the nut 30 fits against the inner top wall of the tube 10. Then, the edge of the fixing plate 50 is welded to the inner wall of the tube 10, so that the nut 30 is connected to the tube 10 via the pad 20. Finally, the bolt is unscrewed from both the fixing plate 50 and the tube 10. The bolt is used to assist in positioning the fixing plate 50 and the tube 10, ensuring that the side of the fixing plate 50 facing away from the nut 30 fits against the inner top wall of the tube 10.

[0061] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A welded structure for an internal nut in a pipe, characterized in that, include: A female tube fitting, wherein the female tube fitting is provided with a cavity and a through hole; A gasket, the gasket being located inside the cavity of the female tube, the gasket being provided with a connection hole; A nut having a threaded hole is connected to the washer to form a fixed plate. as well as An auxiliary component having threads, the auxiliary component passing through the through hole, the threaded hole and the connecting hole, and the auxiliary component being detachably mounted to the fixing plate and the female tube; The side of the fixing plate facing away from the nut is fitted and connected to the inner wall of the tube fitting, and the connecting hole communicates with the through hole.

2. The pipe nut welding structure as described in claim 1, characterized in that, The edge of the fixing plate is welded and fixed to the inner wall of the tube fitting.

3. The pipe nut welding structure as described in claim 2, characterized in that, The pad includes a support portion and a connecting portion. The connecting portion is connected to the nut. The support portion is bent relative to the connecting portion toward the side wall of the tube fitting. The side of the support portion away from the connecting portion abuts against the inner bottom wall of the tube fitting. The support portion is used to support the connecting portion so that the connecting portion fits against the inner top wall of the tube fitting.

4. The pipe nut welding structure as described in claim 3, characterized in that, The side of the support portion away from the connecting portion is welded and fixed to the edge of the inner wall of the tube fitting.

5. The pipe nut welding structure as described in claim 4, characterized in that, The nut includes a first nut, and the number of the first nuts is at least two, with the at least two first nuts spaced apart along the length of the pad; the number of the connecting holes corresponds to the number of the first nuts.

6. The pipe nut welding structure as described in claim 5, characterized in that, The nut includes a second nut, which is spaced apart from the first nut in the width direction of the pad.

7. The pipe nut welding structure as described in claim 6, characterized in that, The number of the support parts is two, and the two support parts are arranged opposite to each other at the connecting part, with the side of the two support parts away from the connecting part abutting against the inner bottom wall of the tube fitting.

8. The pipe nut welding structure as described in any one of claims 5 to 7, characterized in that, Each nut includes a nut body and a protrusion, the protrusion being disposed protruding relative to the nut body and the protrusion being positioned within the connection hole of the pad; both the nut body and the protrusion are provided with threaded holes.

9. The pipe nut welding structure as described in claim 8, characterized in that, The nut body is welded and fixed to the pad near the edge of the pad, so that the nut and the connection form the fixing plate.

10. The pipe nut welding structure as described in claim 1 or 2, characterized in that, The auxiliary component is a bolt.

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