CN213318669U

CN213318669U - Welding auxiliary fixing clamp

Info

Publication number: CN213318669U
Application number: CN202021675166.0U
Authority: CN
Inventors: 黄敏智; 钱伟成; 叶育健; 叶勇红; 周恩全; 杨梦丹
Original assignee: Guangdong Industrial Equipment Installation Co ltd
Current assignee: Guangdong Industrial Equipment Installation Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-06-01
Anticipated expiration: 2030-08-12

Abstract

The utility model discloses a welding auxiliary fixing clamp, which comprises a positioning piece, a pressing mechanism and at least three pressing strips, wherein the positioning piece is provided with a through hole; the pressing strips are arranged in the through holes, extend along the length direction of the through holes, and are distributed in a circumferential manner; the pressing mechanism is used for selectively pressing the pressing strip on the two sections of welded pipelines. This welding auxiliary fixture, the weld bead of two sections welded pipe says penetrates from the both ends of setting element respectively, and the weld bead is arranged in the centre of through-hole, under hold-down mechanism's effect, the both sides of weld bead on two sections welded pipe says are pressed to at least three layering, be equivalent to line contact between layering and the welded pipe way, each layering is the circumference and distributes, it is fixed to weld the pipeline centre gripping, realize the location of welded pipe, make the weld bead of two sections welded pipe say align, avoid appearing the dislocation, improve the concentricity of weld bead, guarantee welding quality, this utility model is used for welding field.

Description

Welding auxiliary fixing clamp

Technical Field

The utility model relates to a welding field especially relates to a welding auxiliary fixture.

Background

In industrial and civil pipeline installation engineering, some systems such as aluminum pipes for powder conveying systems have high requirement on levelness of welded joint of welding seams, and if the concentricity deviation of two pipelines is large during welding, the dislocation condition occurs, so that powder is accumulated and agglomerated at the welding position, and the stability of the system is seriously influenced. In order to avoid the situation of dislocation during butt welding of pipelines, the concentricity and the levelness of the butt joint of a welding port need to be ensured, the butt joint of the traditional welding is usually visually observed by the experience of workers, the butt joint is difficult during welding by the method, the concentricity of the welding port is poor, the pipelines are not level after welding, the welding precision is low, and quality defects are easily caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a welding auxiliary fixture, improve the concentricity of crater.

According to the utility model discloses an embodiment provides a welding auxiliary fixture, include:

the positioning piece is provided with a through hole for penetrating two sections of welding pipelines;

the pressing strips are arranged in the through hole, extend along the length direction of the through hole and are distributed circumferentially; and

and the pressing mechanism is used for selectively pressing the pressing strip on the two sections of welded pipelines, and the pressing mechanism is fixed on the positioning piece.

The auxiliary welding fixing clamp at least has the following beneficial effects: the welding openings of the two sections of welding pipelines respectively penetrate from two ends of the positioning piece, the welding openings are arranged in the middle of the through hole, at least three pressing strips are pressed on two sides of the welding openings on the two sections of welding pipelines under the action of the pressing mechanism, the pressing strips and the welding pipelines are in line contact, the pressing strips are distributed circumferentially, the welding pipelines are clamped and fixed, the positioning of the welding pipelines is realized, the welding openings of the two sections of welding pipelines are aligned, the dislocation is avoided, the concentricity of the welding openings is improved, and the welding quality is ensured.

According to the utility model discloses welding auxiliary fixture, the setting element is the tubulose, the side of setting element is offered and is used for dodging the mouth of dodging of welding operation.

According to the utility model discloses welding auxiliary fixture, dodge the mouth and be 120 arc length.

According to the utility model discloses welding auxiliary fixture, hold-down mechanism include respectively with each a plurality of depression bars that the layering corresponds, the depression bar passes from the outside the lateral wall of setting element with layering fixed connection.

According to the utility model discloses welding auxiliary fixture, one the layering corresponds two the depression bar, one of them the depression bar sets up the one end of layering, another the depression bar sets up the other end of layering.

According to the utility model discloses welding auxiliary fixture, be equipped with the screw thread on the depression bar, be fixed with on the lateral wall of setting element with depression bar screw-thread fit's nut.

According to the utility model discloses welding auxiliary fixture, the layering has threely, three the layering is along the mutual 120 distributions of interval of circumference.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

FIG. 1 is a front view of a welding auxiliary fixing clamp according to an embodiment of the present invention;

FIG. 2 is a side view of the welding auxiliary fixing clamp according to the embodiment of the present invention;

FIG. 3 is a front view of the auxiliary welding fixture clamping the welded pipe according to the embodiment of the present invention;

FIG. 4 is a side view of the welding auxiliary fixing clamp clamping the welded pipe according to the embodiment of the present invention;

reference numerals: the device comprises a positioning piece 10, a through hole 11, an avoiding opening 12, a pressing strip 20, a pressing rod 30, a nut 40 and a welding pipeline 50.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 4, an embodiment of the present invention provides a welding auxiliary fixing fixture, which includes a positioning member 10, a pressing mechanism and at least three pressing bars 20, wherein the positioning member 10 has a through hole 11 for penetrating two sections of welding pipes 50; the pressing strips 20 are arranged in the through holes 11, the pressing strips 20 extend along the length direction of the through holes 11, and the pressing strips 20 are distributed circumferentially; the pressing mechanism is used for selectively pressing the pressing strip 20 on the two sections of the welded pipelines 50 and is fixed on the positioning piece 10.

In the auxiliary welding fixture of the embodiment, the welding ports of two sections of welding pipelines 50 penetrate from two ends of the positioning part 10 respectively, the welding ports are arranged in the middle of the through hole 11, at least three pressing strips 20 are pressed on two sides of the welding ports on the two sections of welding pipelines 50 under the action of the pressing mechanism, line contact is achieved between the pressing strips 20 and the welding pipelines 50, the pressing strips 20 are distributed circumferentially, the welding pipelines 50 are clamped and fixed, the positioning of the welding pipelines 50 is achieved, the welding ports of the two sections of welding pipelines 50 are aligned, dislocation is avoided, the concentricity of the welding ports is improved, and the welding quality is guaranteed. After the welding is completed, the hold-down mechanism is released, and the welded pipe 50 can be taken out.

In this embodiment, the positioning member 10 is tubular, and an avoiding opening 12 for avoiding a welding operation is formed in a side surface of the positioning member 10, and the two sections of the welding pipes 50 are welded by passing through the avoiding opening 12. Specifically, the avoidance port 12 has a circular arc length of 120 °, and the avoidance port 12 extends through the entire length of the positioning member 10. Therefore, when welding operation is carried out, three times of welding are needed, one third of crater welding is completed through one time of welding, then the pressing mechanism loosens the pressing strip 20, the positioning piece 10 or the welding pipeline 50 rotates 120 degrees, then the pressing strip 20 is pressed by the pressing mechanism again, the welding pipeline 50 is clamped, and welding is continued until the crater is completely welded.

In the embodiment, the pressing mechanism includes a plurality of pressing rods 30 respectively corresponding to the pressing strips 20, and the pressing rods 30 are fixedly connected with the pressing strips 20 through the side walls of the positioning member 10 from the outside. The clamping force is applied to the molding 20 by the pressing rod 30.

In some embodiments, one pressing bar 20 corresponds to two pressing rods 30, one pressing rod 30 is disposed at one end of the pressing bar 20, the other pressing rod 30 is disposed at the other end of the pressing bar 20, and the two pressing rods 30 respectively apply pressure to two ends of the pressing bar 20 to press two sections of the welded pipes 50.

In some embodiments, the pressing rod 30 is provided with a thread, and a nut 40 that is in threaded fit with the pressing rod 30 is welded and fixed on the side wall of the positioning member 10, and the nut 40 may be arranged inside or outside the positioning member 10. Thus, after two sections of welded pipes 50 are inserted into the positioning member 10, the pressing bar 20 can be driven to move inwards by screwing the pressing bar 30 until the welded pipes 50 are pressed tightly.

In the embodiment, there are three pressing strips 20, and the three pressing strips 20 are distributed at an interval of 120 ° along the circumference, so that effective positioning and clamping of the welded pipe 50 can be realized.

It will be understood that the three beads 20 need not be spaced at 120 ° intervals, and that the beads 20 may be spaced at different angles, so long as clamping of the welded conduit 50 is achieved.

The welding auxiliary fixing clamp of the embodiment comprises the following use steps:

(1) respectively penetrating welding ports of two sections of welding pipelines 50 from two ends of the positioning piece 10, wherein the welding ports are arranged in the middle of the positioning piece 10;

(2) screwing the adjusting pressure rod 30 to press the 3 pressure strips 20 on the welded pipeline 50;

(3) the two sections of the welding pipelines 50 are adjusted to be horizontal, no dislocation exists in the butt joint of the welding openings, and the gap meets the requirement;

(4) after the pressing rod 30 is screwed down to be firmly fixed, welding can be carried out;

(5) welding the welding pipeline 50 at the avoidance opening 12, loosening the pressure lever 30 after one third of the welding opening is welded, rotating the positioning piece 10 by 120 degrees, screwing the pressure lever 30 again, and continuing welding until the welding opening is completely welded;

(6) after the welding is finished, the pressing rod 30 is loosened, the positioning piece 10 continues to be welded from the next welding opening of the slideway at the welding opening where the welding is finished until all welding openings of the welding pipeline 50 are finished, and the positioning piece 10 is taken out from the movable end of the welding pipeline 50.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A welding auxiliary fixing clamp is characterized by comprising:

2. The welding auxiliary fixture of claim 1, wherein: the setting element is the tubulose, the side of setting element is seted up and is used for dodging welding operation's the mouth of dodging.

3. The welding auxiliary fixing jig according to claim 2, characterized in that: the avoidance port is 120-degree circular arc length.

4. The welding auxiliary fixing jig according to any one of claims 1 to 3, characterized in that: the pressing mechanism comprises a plurality of pressing rods corresponding to the pressing strips respectively, and the pressing rods penetrate through the side wall of the positioning piece from the outside and are fixedly connected with the pressing strips.

5. The welding auxiliary fixture of claim 4, wherein: one pressing bar corresponds to two pressing bars, wherein one pressing bar is arranged at one end of the pressing bar, and the other pressing bar is arranged at the other end of the pressing bar.

6. The welding auxiliary fixture of claim 4, wherein: the pressing rod is provided with threads, and a nut matched with the pressing rod in a threaded manner is fixed on the side wall of the positioning piece.

7. The welding auxiliary fixture of claim 1, wherein: the number of the pressing strips is three, and the three pressing strips are distributed at intervals of 120 degrees along the circumference.