CN221019314U

CN221019314U - Welding protection tool

Info

Publication number: CN221019314U
Application number: CN202322787464.9U
Authority: CN
Inventors: 彭科伟; 李林; 莫非
Original assignee: Chengdu Weichuang Rail Transit Special Equipment Co ltd
Current assignee: Chengdu Weichuang Rail Transit Special Equipment Co ltd
Priority date: 2023-10-16
Filing date: 2023-10-16
Publication date: 2024-05-28
Anticipated expiration: 2033-10-16

Abstract

The utility model belongs to the technical field of welding tools and discloses a welding protection tool, which comprises a bottom plate, wherein a closed gas chamber is arranged on one side surface of the bottom plate, the gas chamber is connected with an argon source, a groove is arranged on the other side surface of the bottom plate, and an exhaust hole penetrating through the bottom plate and communicated with the gas chamber is arranged on the groove; two pressing plates are further arranged on the other side face of the bottom plate and are respectively located on two sides of the groove, a plurality of bolts are mounted on the bottom plate, through holes are formed in the pressing plates, and nuts used for pressing the pressing plates are mounted on each bolt. The welding protection tool provided by the utility model can be suitable for welding thin plates with the plate thickness t less than or equal to 4mm, can control welding deformation through the pressing plate, can also be protected by back argon filling, and is beneficial to normal operation of examination and welding process assessment of a welder.

Description

Welding protection tool

Technical Field

The utility model belongs to the technical field of welding tools, and particularly relates to a welding protection tool.

Background

The welding enterprises have the problems of small test pieces (the size of a single test board is not more than 150 multiplied by 350 mm) and thin board thickness along with a large amount of welder examination and welding process evaluation work. At the same time:

1. Because of the specificity of austenitic stainless steel materials, when the test piece is in the form of a butt joint full penetration weld, the back of the weld is severely oxidized if the back argon filling protection is not performed.

2. If the test plate with the plate thickness smaller than 4mm is not controlled, the test piece will deform in the welding process, the welder is difficult to operate, and finally the welding seam is unqualified.

3. All the problems can cause the failure of welder examination and welding process assessment, and waste of resources and time is caused.

Aiming at the problems, the utility model with the bulletin number of CN203579034U discloses a longitudinal seam welding argon filling protection tool, which comprises a sealing groove, a supporting rod, an argon pipe joint and the like, and the sealing groove is fixed on a workpiece through up-down adjustment of a pressing rod, so that the welding protection function is achieved. However, the technical scheme still has the defect that the welding requirements (the plate thickness t is less than or equal to 4 mm) of the thin plate related to the examination and process evaluation of a welder cannot be met. The reason is that in the welding process, the sheet is easy to generate wave deformation, and if the welding deformation is not controlled, the welder is difficult to operate, and the quality of the welding seam is easy to be unqualified.

The technical scheme provided by the utility model with the bulletin number of CN203579034U solves the problem of argon protection, but the compression bar cannot solve the problem of surface deformation, cannot control the welding deformation of the thin plate, and cannot meet the thin plate welding requirements of welder examination and welding process assessment. Simultaneously, it is fixed the seal groove on the work piece through the mode of physical extrusion laminating, because the unevenness of work piece surface, can take place the gas leakage phenomenon in the use.

At present, the welding of thin plates with the plate thickness t less than or equal to 4mm is obviously increased, and the prior art welding protection tool is obviously not applicable to the problem based on the search of the patent and the application knowledge of the prior art welding protection tool.

Disclosure of utility model

The present utility model aims to solve the above technical problems at least to some extent. Therefore, the utility model aims to provide a welding protection tool.

The technical scheme adopted by the utility model is as follows:

a welding protection tool comprises a bottom plate, wherein a closed gas chamber is arranged on one side surface of the bottom plate, the gas chamber is connected with an argon source, a groove is formed in the other side surface of the bottom plate, and an exhaust hole penetrating through the bottom plate and communicated with the gas chamber is formed in the groove; two pressing plates for pressing two ends of the test piece are further arranged on the other side face of the bottom plate, the two pressing plates are respectively located on two sides of the groove, a plurality of bolts are mounted on the bottom plate, through holes for the bolts to pass through are formed in the pressing plates, and nuts for pressing the pressing plates are mounted on each bolt.

Preferably, the bolt is movably sleeved with a base plate, one side surface of the base plate is contacted with the pressing plate, and the other side surface of the base plate is contacted with the nut. A side surface of the bottom plate, which is in contact with the test piece, is provided with a separation plate, and a side surface of the pressing plate, which is in contact with the test piece, is provided with a separation plate.

Preferably, the exhaust holes are arranged on the bottom surface of the groove, and the exhaust holes are arranged in an S shape along the length direction of the groove. And an air pipe connector is arranged on the gas chamber and connected with an argon source.

Preferably, the side surface of the bottom plate provided with the gas chamber is provided with a supporting block, and the height of the supporting block is larger than or equal to that of the gas chamber.

The beneficial effects of the utility model are as follows:

the welding protection tool provided by the utility model can be suitable for welding thin plates with the plate thickness t less than or equal to 4mm, can control welding deformation through the pressing plate, can also be protected by back argon filling, and is beneficial to normal operation of examination and welding process assessment of a welder;

The welding device has the advantages of simple integral structure and low manufacturing difficulty, can weld various different materials, can weld butt joints and T-shaped joints, and can weld tube plate joints after changing the size.

Drawings

Fig. 1 is a perspective view of the welding protection fixture of the present utility model.

Fig. 2 is a top view of the weld protection tooling of the present utility model.

Fig. 3 is a cross-sectional view of the weld protection tooling of the present utility model.

In the figure: 1-a bottom plate; 2-a gas chamber; 3-grooves; 4-exhaust holes; 5-pressing plates; 6-a bolt; 7-a nut; 8-backing plate; 9-an air tube joint; 10-supporting blocks.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.

The utility model will be further described with reference to the drawings and specific examples.

As shown in fig. 1 to 3, a welding protection tool of the present embodiment includes a substantially square base plate 1, the base plate 1 being made of a Q235A steel plate having a thickness of 16mm, and having a size of 400×450mm.

The bottom surface of the bottom plate 1 is provided with a gas chamber 2, and the gas chamber 2 is made of a thin plate with the thickness of 2mm welded on the bottom plate 1. The gas chamber 2 is integrally sealed, a gas pipe joint 9 is arranged on the gas chamber 2, and the gas pipe joint 9 is connected with an argon source.

The top surface of the bottom plate 1 is provided with a groove 3 which is arranged in a straight line, the bottom surface of the groove 3 is provided with a plurality of exhaust holes 4 which penetrate through the bottom plate 1 and are communicated with the gas chamber 2, and the exhaust holes 4 are arranged in an S-shaped staggered manner along the length direction of the groove 3.

Two pressing plates 5 are further arranged on the top surface of the bottom plate 1, the two pressing plates 5 are respectively located on two sides of the groove 3 and are symmetrically arranged, four bolts 6 are installed on the bottom plate 1, and two bolts 6 are respectively arranged on two sides of the groove 3. Two through holes for the bolts 6 to pass through are formed in each pressing plate 5, each bolt 6 is movably sleeved with a base plate 8, each bolt 6 is provided with a nut 7 in a threaded manner, one side face of each base plate 8 is in contact with the pressing plate 5, and the other side face of each base plate 8 is in contact with the nuts 7.

When the welding protection tool is used, a test piece is firstly placed on the top surface of the bottom plate 1, a welding joint is placed at the groove 3, then a pressing plate, a base plate and a nut are installed, after the nut is screwed down, the two pressing plates respectively press most of the two ends of the test piece through the fastening force of the bolt and the nut, and the deformation control is realized through a rigid fixing method; when argon filling protection is needed, argon is introduced into the gas chamber through the air pipe joint, and the argon in the gas chamber enters the back of the test piece through the exhaust hole. The welding protection tool can control welding deformation through the pressing plate, and can also protect the back surface by filling argon, so that the welding protection tool is beneficial to the normal operation of examination and welding process assessment of a welder.

The bolts can be welded on the bottom plate for fixed use or can be used without welding activity, when the bolts are used without welding activity, the corresponding mounting holes can be formed in the bottom plate 1, and the bolts are connected with the nuts after sequentially penetrating through the mounting holes and the through holes.

When stainless steel and aluminum alloy materials are required to be welded, a separation plate is arranged on one side surface of the bottom plate 1, which is in contact with the test piece, and a separation plate is also arranged on one side surface of the pressing plate 5, which is in contact with the test piece, and the separation plate is a stainless steel thin plate with the thickness of 1mm so as to realize separation and prevent the stainless steel and aluminum alloy materials from being polluted.

The side of the bottom plate 1 provided with the gas chamber 2 is provided with the supporting block 10, the height of the supporting block 10 equal to the height of the gas chamber 2 is used for placing the supporting block on a plane, and the stability of the welding protection tool during use can be ensured.

The utility model is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present utility model, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present utility model, fall within the scope of protection of the present utility model.

Claims

1. Welding protection frock, its characterized in that: the argon source device comprises a bottom plate (1), wherein a closed gas chamber (2) is arranged on one side surface of the bottom plate (1), the gas chamber (2) is connected with an argon source, a groove (3) is formed in the other side surface of the bottom plate (1), and an exhaust hole (4) penetrating through the bottom plate (1) and communicated with the gas chamber (2) is formed in the groove (3); two pressing plates (5) for pressing two ends of a test piece are further arranged on the other side face of the bottom plate (1), the two pressing plates (5) are respectively located on two sides of the groove (3), a plurality of bolts (6) are installed on the bottom plate (1), through holes for the bolts (6) to penetrate through are formed in the pressing plates (5), and nuts (7) for pressing the pressing plates (5) are installed on each bolt (6).

2. The welding protection fixture of claim 1, wherein: the bolt (6) is movably sleeved with a base plate (8), one side surface of the base plate (8) is contacted with the pressing plate (5), and the other side surface of the base plate (8) is contacted with the nut (7).

3. The welding protection fixture according to claim 1 or 2, wherein: a side surface of the bottom plate (1) contacted with the test piece is provided with a separation plate, and a side surface of the pressing plate (5) contacted with the test piece is provided with a separation plate.

4. The welding protection fixture of claim 1, wherein: the exhaust hole (4) is arranged on the bottom surface of the groove (3), and the exhaust hole (4) is arranged in an S shape along the length direction of the groove (3).

5. The welding protection fixture of claim 1 or 4, wherein: an air pipe connector (9) is arranged on the gas chamber (2), and the air pipe connector (9) is connected with an argon source.

6. The welding protection fixture of claim 1, wherein: the side surface of the bottom plate (1) provided with the gas chamber (2) is provided with a supporting block (10), and the height of the supporting block (10) is larger than or equal to the height of the gas chamber (2).

7. The welding protection fixture of claim 1, wherein: the number of the bolts (6) is four, and two bolts (6) are respectively arranged on two sides of the groove (3).