CN218135897U

CN218135897U - Back gas protection device for butt welding of circular tubes

Info

Publication number: CN218135897U
Application number: CN202222411688.5U
Authority: CN
Inventors: 李众; 毛勇; 刘荣静; 赵洪涛; 李春超
Original assignee: ZHEJIANG NAMAG EQUIPMENT MANUFACTURING CO LTD
Current assignee: ZHEJIANG NAMAG EQUIPMENT MANUFACTURING CO LTD
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2022-12-27
Anticipated expiration: 2032-09-09

Abstract

The utility model discloses a back gas protection device for butt welding of round tubes, which comprises a bearing connecting rod, a first telescopic supporting rod, a second telescopic supporting rod and a diagonal draw bar, wherein the bearing connecting rod is arranged along the axial direction of the round tube and is arranged at the center of the round tube; the other ends of the first telescopic supporting rod, the second telescopic supporting rod and the inclined pull rod are connected with the inner wall of the circular tube. By the proposal, the utility model has the advantages of simple structure, protection are reliable, have very high practical value and spreading value in the welding technology field.

Description

Back gas protection device for butt welding of circular tubes

Technical Field

The utility model belongs to the technical field of the welding technique and specifically relates to a back gas protection device that pipe butt welding used.

Background

When the steel pipe butt joint department welding, welder welding position has gas to directly come out from the trachea on the welder, and at present, the front of welding department is external trachea very easily and is carried out jet-propelled protection, nevertheless, the back of welding seam also needs the protection (be the body inner wall), and at this moment, often need aerify the pipeline or artifical handheld trachea to carry out jet-propelled to welding position, and its operation is comparatively complicated.

In addition, the applicant filed a patent application No. 202221150622.9 and a utility model entitled "back gas protection device for circular tube butt welding" in the previous period, which includes a screw rod arranged along the axial direction of a tube body, a first supporting mechanism and a second supporting mechanism arranged on the screw rod, and a gas injection protection mechanism arranged on the screw rod and arranged between the first supporting mechanism and the second supporting mechanism; the first supporting mechanism and the second supporting mechanism are supported on the inner wall of the pipe body. The first supporting mechanism and the second supporting mechanism respectively comprise a bearing mounting seat and an adjusting nut which are sleeved on the screw rod, and supporting mechanisms which are connected with the bearing mounting seat and the adjusting nut and are at least three groups annularly arranged on the screw rod. Which nevertheless enables reliable gas protection and which is relatively simple to install. However, the structure is complicated, and the pipe cannot be easily transported even in a long distance.

Therefore, a back gas protection device for butt welding of round pipes, which has a simple structure and reliable protection, is urgently needed.

SUMMERY OF THE UTILITY MODEL

To the above problem, an object of the utility model is to provide a back gas protection device that pipe butt welding used, the utility model discloses a technical scheme as follows:

a back gas protection device for circular tube butt welding is arranged at a butt joint seam of the inner walls of two circular tubes to be butt welded, and comprises a bearing connecting rod, a first telescopic supporting rod, a second telescopic supporting rod and a diagonal draw bar, wherein the bearing connecting rod is arranged along the axial direction of the circular tubes and is arranged at the center of the circular tubes;

the other ends of the first telescopic supporting rod, the second telescopic supporting rod and the diagonal draw bar are connected with the inner wall of the circular tube.

Further, the back gas protection device also comprises a weight component arranged at the other end of the vertical weight rod.

Furthermore, a plurality of balance weight adjusting holes are formed in the weight component.

Furthermore, a counterweight column is arranged in the counterweight adjusting hole.

Furthermore, the back gas protection cover is arranged on the inner wall of the round pipe and is in an arc shape; the arc shape is arranged along the sliding track of the back gas protection cover.

Furthermore, an end head and a spring are arranged between the third telescopic supporting rod and the back air protection cover; the end head is connected with a third telescopic supporting rod; the spring is arranged between the end head and the back gas protection cover.

Preferably, the first telescopic supporting rod and the second telescopic supporting rod are arranged at an included angle of 90 degrees.

Preferably, the third telescopic supporting rod and the vertical weight rod are arranged at an included angle of 90 degrees.

Preferably, the first telescopic support rod, the second telescopic support rod and the diagonal draw bar are respectively in an isosceles triangle with the connecting line of the connecting points of the circular tubes.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) The utility model skillfully arranges the first telescopic support rod, the second telescopic support rod and the diagonal draw bar, which can ensure reliable support and is also suitable for installation and use of various pipe diameters; moreover, the storage and the transportation are convenient, and the portability of the use is ensured.

(2) The utility model ensures the rotation of the back gas protection cover to save labor by arranging the third telescopic support rod, the vertical heavy object rod and the heavy object component; and set up the spring at the tip of the flexible bracing piece of third to guarantee that back gas protection cover is close to reliably, in order to realize reliable gas back protection.

To sum up, the utility model has the advantages of simple structure, protection are reliable, have very high practical value and spreading value in the welding technology field.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as a limitation of the scope of protection, and for those skilled in the art, other related drawings may be obtained from these drawings without inventive effort.

Fig. 1 is a schematic view of the installation structure of the present invention.

Fig. 2 is a first structural schematic diagram of the present invention.

Fig. 3 is a second schematic structural diagram of the present invention.

Fig. 4 is a schematic structural view of the vertical weight rod and weight assembly of the present invention.

Fig. 5 is a schematic structural diagram of the end and the spring of the present invention.

In the drawings, the names of the parts corresponding to the reference numerals are as follows:

1. a circular tube; 2. a back gas shield; 21. a first telescopic support rod; 22. a second telescopic support rod; 23. a third telescopic support rod; 24. a diagonal member; 25. a bearing connecting rod; 26. a bearing; 27. a vertical weight bar; 28. a back gas shield; 29. a weight assembly; 231. a tip; 232. a spring; 291. a counterweight adjustment hole.

Detailed Description

To further clarify the objects, technical solutions and advantages of the present application, the present invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Examples

In this embodiment, the term "and/or" is only one kind of association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone.

The terms "first" and "second" and the like in the description and claims of the present embodiment are used for distinguishing different objects, and are not used for describing a specific order of the objects. For example, the first target object and the second target object, etc. are specific sequences for distinguishing different target objects, rather than describing target objects.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "such as" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the description of the embodiments of the present application, the meaning of "a plurality" means two or more unless otherwise specified. For example, a plurality of processing units refers to two or more processing units; the plurality of systems refers to two or more systems.

As shown in fig. 1 to 5, the present embodiment provides a back gas protection device for circular pipe butt welding, which is disposed at a butt joint seam between inner walls of two circular pipes 1 to be butt-welded. In this embodiment, this back gas protection device 2 includes and lays along the axial direction of pipe 1, and lay the bearing connecting rod 25 at the center of pipe 1, the first flexible bracing piece 21 of one end all with bearing connecting rod 25 fixed connection, the flexible bracing piece 22 of second and oblique pull rod 24, the bearing 26 of cover on bearing connecting rod 25, the flexible bracing piece 23 of third and perpendicular heavy object pole 27 of the outside edge fixed connection of one end all with bearing 26, the setting is at the other end of the flexible bracing piece 23 of third, and the back gas protection cover 28 that is close to with pipe 1 inner wall, and set up the heavy object subassembly 29 at the other end of perpendicular heavy object pole 27. In this embodiment, in order to ensure the reliability of the support, the first telescopic support rod 21 and the second telescopic support rod 22 are arranged at an included angle of 90 °. The connecting lines of the connecting points of the first telescopic supporting rod 21, the second telescopic supporting rod 22 and the diagonal draw bar 24 and the circular tube 1 are in an isosceles triangle shape.

In this embodiment, the third telescopic support bar 23 is arranged at a 90 ° angle to the vertical weight bar 27. In addition, a plurality of weight adjustment holes 291 are formed in the weight assembly 29. According to the configuration requirement, there may be no counterweight column (metal material, not shown, which matches with the counterweight adjusting hole 291) or a plurality of counterweight columns, which meet the configuration requirement.

In addition, in order to ensure that the back gas protection cover 28 is reliably attached, a head 231 and a spring 232 are arranged between the third telescopic support rod 23 and the back gas protection cover 28; the end 231 is connected with the third telescopic supporting rod 23; the spring 232 is disposed between the head 231 and the back gas shield 28. Meanwhile, the back gas protection cover 28 is arranged in an arc shape on the inner wall of the round pipe 1; the arc shape is disposed along the sliding trajectory of the back gas shield 28.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and are not limitations on the protection scope of the present invention, but all the changes made by adopting the design principle of the present invention and performing non-creative work on this basis shall fall within the protection scope of the present invention.

Claims

1. A back gas protection device for circular tube butt welding is arranged at a butt joint of inner walls of two circular tubes (1) to be in butt welding, and is characterized by comprising a bearing connecting rod (25) which is arranged along the axial direction of the circular tubes (1) and is arranged at the center of the circular tubes (1), a first telescopic supporting rod (21), a second telescopic supporting rod (22) and an inclined pull rod (24) of which one ends are fixedly connected with the bearing connecting rod (25), a bearing (26) which is sleeved on the bearing connecting rod (25), a third telescopic supporting rod (23) and a vertical weight rod (27) of which one ends are fixedly connected with the outer side edge of the bearing (26), and a back gas protection cover (28) which is arranged at the other end of the third telescopic supporting rod (23) and is close to the inner walls of the circular tubes (1);

the other ends of the first telescopic supporting rod (21), the second telescopic supporting rod (22) and the diagonal draw bar (24) are connected with the inner wall of the circular tube (1).

2. A back gas shield apparatus for butt welding of round tubes according to claim 1, further comprising a weight assembly (29) provided at the other end of the vertical weight bar (27).

3. The back gas protection device for circular tube butt welding of claim 2, wherein said weight assembly (29) has a plurality of weight adjustment holes (291).

4. The back gas protection device for circular tube butt welding of claim 3, wherein a counterweight column is arranged in the counterweight adjusting hole (291).

5. The back gas protection device for circular tube butt welding according to claim 1, wherein the back gas protection cover (28) is arranged in an arc shape on the inner wall of the circular tube (1); the arc shape is arranged along the sliding track of the back gas protection cover (28).

6. The back gas protection device for circular tube butt welding according to claim 1 or 5, wherein a head (231) and a spring (232) are arranged between the third telescopic support rod (23) and the back gas protection cover (28); the end head (231) is connected with a third telescopic supporting rod (23); the spring (232) is arranged between the head (231) and the back gas shield (28).

7. The back gas shield device for circular tube butt welding according to claim 1, 2, 3, 4 or 5, wherein the first telescopic support rod (21) and the second telescopic support rod (22) are arranged at an included angle of 90 °.

8. A back gas shield arrangement for butt welding of round tubes as claimed in claim 1 or 2 or 3 or 4 or 5 wherein said third telescopic support bar (23) is arranged at a 90 ° angle to the vertical weight bar (27).

9. The back gas protection device for circular tube butt welding according to claim 7, wherein the connecting lines of the first telescopic support rod (21), the second telescopic support rod (22) and the diagonal draw bar (24) and the connecting points of the circular tube (1) are in an isosceles triangle shape.