Steel structure welding device

Abstract

This utility model provides a steel structure welding device, relating to the field of steel structure welding technology. It includes a welding torch body, with a butt joint at one end of the torch body. A hot melt sleeve is located at the bottom of the butt joint, and a hot melt cavity is formed at the bottom of the hot melt sleeve. The top of the hot melt sleeve is connected to the hot melt cavity. A welding wire is positioned in the middle of the inside of the hot melt sleeve, with its top extending from the butt joint to the inside of the welding torch body. In this utility model, the hot melt sleeve is connected to the butt joint, and the welding wire is supplied to the butt joint and the hot melt sleeve through the welding torch body. Gas is supplied to the buffer cavity through a gas supply port and then injected into the hot melt cavity through a gas jet port for combustion. The high temperature generated by the combustion melts the welding wire. Simultaneously, the gas is ejected from the hot melt cavity, and the generated gas diffuses outwards, preventing oxygen in the air from contacting the molten welding wire and oxidizing the welded area.

Description

Technical Field

[0001] This utility model relates to the field of steel structure welding technology, and in particular to a steel structure welding device. Background Technology

[0002] Steel structures are structures made of steel materials and are one of the main types of building structures. The structure is mainly composed of components such as steel beams, steel columns, and steel trusses made of steel sections and steel plates. Steel structures have advantages such as high strength, light weight, good seismic performance, high degree of industrialization, short construction period, strong plasticity, energy saving and environmental protection.

[0003] Currently, welding rods are commonly used for welding steel structures. However, the outer surface of welding rods is covered with a lot of welding combustion substances, which will produce a lot of impurities after welding. At the same time, an oxidation reaction will occur at the welded part during welding, and the production of oxidized substances will make the welded part easy to rust later. Utility Model Content

[0004] To address the problems in the prior art, this utility model provides a steel structure welding device.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] A steel structure welding device includes a welding torch body. A butt joint is provided at the bottom of one end of the welding torch body. A hot melt sleeve is provided at the bottom of the butt joint. A hot melt cavity is opened at the bottom of the hot melt sleeve. The top of the hot melt sleeve and the hot melt cavity are connected. A welding wire is provided in the middle of the inside of the hot melt sleeve. The top of the welding wire extends from the butt joint to the inside of the welding torch body. The bottom of the welding wire extends to the inside of the hot melt cavity. A handle is fixed to the top of the welding torch body.

[0007] Optionally, an annular groove is formed on the outer surface of the heat-melting sleeve near the top edge, and a limit ring is slidably provided between the inner walls of the annular groove. A mating sleeve is threadedly connected to the outer surface of the heat-melting sleeve near the top.

[0008] Optionally, the inner walls of the mating sleeves are threaded onto the outer surface of the mating joint near the top edge, and the inner walls of the mating sleeves are fixed to the outer surface of the limiting ring near the bottom edge.

[0009] Optionally, the bottom of the connector is provided with multiple air supply holes, and the top of the heat-fusion sleeve is fixed with multiple connecting pipes extending into the air supply holes at equal intervals, and the outer surface of each of the multiple connecting pipes is provided with a sealing ring.

[0010] Optionally, the inside of the heat-melting sleeve is provided with a buffer cavity, the bottom of the multiple connecting pipes are all connected to the top surface of the buffer cavity, and the bottom surface of the buffer cavity is provided with multiple air jet holes at equal intervals, one end of each of the multiple air jet holes corresponding to the inside of the heat-melting cavity.

[0011] Optionally, a drain cover is fixed to the outer surface of the heat-melting sleeve near the bottom edge, a heat insulation cover is fixed to the middle of the outer surface of the heat-melting sleeve, and a preheating cavity is opened in the inner part of the heat-melting sleeve near the middle.

[0012] Optionally, the bottom surface of the preheating chamber is provided with multiple return ports that extend to the outer surface of the heat-melting sleeve at equal intervals, and one end of each of the multiple return ports is located below the flow guide shroud. The top surface of the preheating chamber is provided with multiple exhaust ports that extend to the outer surface of the heat-melting sleeve at equal intervals, and one end of each of the multiple exhaust ports extends to the bottom of the heat insulation shroud.

[0013] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0014] 1. In this utility model, the hot melt sleeve is first connected to the butt joint, and then the welding iron wire is supplied to the butt joint and the hot melt sleeve through the welding gun body. The gas supply hole supplies gas into the interior of the buffer chamber, and then the gas is injected into the interior of the hot melt chamber from the air jet hole for combustion. The high temperature generated by the combustion can melt the welding iron wire. At the same time, the gas is ejected from the hot melt chamber and the generated gas will diffuse to the outside, preventing oxygen in the air from contacting the molten welding iron wire and oxidizing the welding part.

[0015] 2. In this utility model, after the high-heat gas generated by the combustion of the gas is ejected from the hot melt chamber to the outside, the hot gas flow can be guided into the interior of the preheating chamber through the flow guide hood. Then, the heat of the hot gas can preheat the welding wire inside the hot melt sleeve, which is convenient for subsequent heating and melting. The gas that enters the preheating chamber will finally be discharged from the exhaust port. When it is discharged, the heat insulation cover can prevent the hot gas from flowing upward and avoid damage to the welding gun body at the joint. Attached Figure Description

[0016] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0017] Figure 1 This utility model provides a bottom-view three-dimensional structural diagram of a steel structure welding device;

[0018] Figure 2This utility model provides a three-dimensional cross-sectional view of one side of the hot melt sleeve in a steel structure welding device.

[0019] Figure 3 This utility model provides a three-dimensional cross-sectional view of the other side of the hot melt sleeve in a steel structure welding device.

[0020] Figure 4 For utility model Figure 2 A magnified view of point A in the middle.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Welding torch body; 2. Handle; 3. Connector; 4. Gas supply port; 5. Hot melt sleeve; 6. Butt sleeve; 7. Drainage hood; 8. Heat insulation hood; 9. Return port; 10. Preheating chamber; 11. Exhaust port; 12. Buffer chamber; 13. Connector tube; 14. Welding wire; 15. Sealing ring; 16. Annular groove; 17. Limiting ring; 18. Hot melt chamber; 19. Air jet.

[0023] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Example 1, such as Figure 1-4 As shown, this utility model provides a technical solution for a steel structure welding device: it includes a welding torch body 1, a butt joint 3 is provided at the bottom of one end of the welding torch body 1, a hot melt sleeve 5 is provided at the bottom of the butt joint 3, a hot melt cavity 18 is opened at the bottom of the hot melt sleeve 5, the top of the hot melt sleeve 5 and the hot melt cavity 18 are connected, a welding wire 14 is provided in the middle of the inside of the hot melt sleeve 5, the top of the welding wire 14 extends from the butt joint 3 to the inside of the welding torch body 1, the bottom of the welding wire 14 extends to the inside of the hot melt cavity 18, and a handle 2 is fixed to the top of the welding torch body 1.

[0026] The effect achieved by the entire embodiment 1 is as follows: first, the hot melt sleeve 5 is connected to the butt joint 3, and then the welding wire 14 is supplied to the butt joint 3 and the hot melt sleeve 5 through the welding gun body 1. The gas supply hole 4 supplies gas into the interior of the buffer chamber 12, and then it is injected into the interior of the hot melt chamber 18 from the air jet hole 19 for combustion. The high temperature generated by combustion can melt the welding wire 14. At the same time, the gas is burned and ejected from the hot melt chamber 18, and the generated gas will diffuse to the outside, preventing oxygen in the air from contacting the molten welding wire 14 and oxidizing the welding part.

[0027] Example 2, as Figure 1-4As shown, an annular groove 16 is formed on the outer surface of the heat-melting sleeve 5 near the top edge. A limit ring 17 is slidably arranged between the inner walls of the annular groove 16. A mating sleeve 6 is threadedly connected to the outer surface of the heat-melting sleeve 5 near the top. The inner walls of the mating sleeve 6 are threaded onto the outer surface of the mating connector 3 near the top edge. The inner walls of the mating sleeve 6 are fixed to the outer surface of the limit ring 17 near the bottom edge. Multiple air supply holes 4 are formed at the bottom of the mating connector 3. Multiple connecting pipes 13 extending into the air supply holes 4 are fixed at equal intervals on the top of the heat-melting sleeve 5. A sealing ring 15 is provided on the outer surface of each connecting pipe 13. A buffer cavity 12 is formed inside the heat-melting sleeve 5. The bottom of each connecting pipe 13 is connected to the buffer cavity. Multiple air jet holes 19 are equidistantly opened on the inner top surface of the buffer cavity 12 and the inner bottom surface of the buffer cavity 12. One end of each air jet hole 19 penetrates into the interior of the hot melt cavity 18. A flow guide 7 is fixed on the outer surface of the hot melt sleeve 5 near the bottom edge. A heat insulation cover 8 is fixed on the outer surface of the hot melt sleeve 5 in the middle. A preheating cavity 10 is opened in the inner part of the hot melt sleeve 5 near the middle. Multiple return ports 9 are equidistantly opened on the inner bottom surface of the preheating cavity 10, penetrating into the outer surface of the hot melt sleeve 5. One end of each return port 9 is located below the flow guide 7. Multiple exhaust ports 11 are equidistantly opened on the inner top surface of the preheating cavity 10, penetrating into the outer surface of the hot melt sleeve 5. One end of each exhaust port 11 penetrates into the lower part of the heat insulation cover 8.

[0028] The effect achieved by the entire embodiment 2 is that after the high heat gas generated by the combustion of the gas is sprayed out from the hot melt chamber 18, the hot gas flow can be guided into the preheating chamber 10 from the return port 9 through the flow guide 7. Then, the welding wire 14 inside the hot melt sleeve 5 can be preheated by the heat of the hot gas, which is convenient for subsequent heating and melting. The gas that enters the preheating chamber 10 will finally be discharged from the exhaust port 11. When it is discharged, the heat insulation cover 8 can prevent the hot gas from flowing upward and avoid damage to the welding gun body 1 above the joint due to heat.

[0029] Working principle: First, the hot melt sleeve 5 is connected to the butt joint 3. Then, the welding wire 14 is supplied to the butt joint 3 and the hot melt sleeve 5 through the welding torch body 1. The gas supply hole 4 supplies gas into the buffer chamber 12 and then injects it into the hot melt chamber 18 through the jet hole 19. The high temperature generated by the combustion melts the welding wire 14. At the same time, the gas is ejected from the hot melt chamber 18 and diffuses to the outside to prevent oxygen in the air from contacting the molten welding wire 14 and oxidizing the welding part. After the high heat gas generated by the combustion is ejected from the hot melt chamber 18 to the outside, the hot gas flow can be guided into the preheating chamber 10 through the return port 9 by the flow guide 7. Then, the heat of the hot gas can preheat the welding wire 14 inside the hot melt sleeve 5, which is convenient for subsequent melting. The gas entering the preheating chamber 10 will finally be discharged from the exhaust port 11. When it is discharged, the heat insulation cover 8 can prevent the hot gas from flowing upward and avoid damage to the butt joint above the welding torch body 1.

[0030] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A steel structure welding device, comprising a welding torch body (1), characterized in that: The welding torch body (1) has a connector (3) at one end of its bottom. The connector (3) has a hot melt sleeve (5) at its bottom. The hot melt sleeve (5) has a hot melt cavity (18) at its bottom. The top of the hot melt sleeve (5) is connected to the hot melt cavity (18). The welding wire (14) is located in the middle of the inside of the hot melt sleeve (5). The top of the welding wire (14) extends from the connector (3) to the inside of the welding torch body (1). The bottom of the welding wire (14) extends to the inside of the hot melt cavity (18). The top of the welding torch body (1) is fixed with a handle (2).

2. The steel structure welding device according to claim 1, characterized in that: An annular groove (16) is provided on the outer surface of the heat-melting sleeve (5) near the top edge. A limit ring (17) is slidably provided between the inner walls of the annular groove (16). A mating sleeve (6) is threadedly connected to the outer surface of the heat-melting sleeve (5) near the top.

3. The steel structure welding device according to claim 2, characterized in that: The inner walls of the mating sleeve (6) are threaded onto the outer surface of the mating joint (3) near the top edge, and the inner walls of the mating sleeve (6) are fixed to the outer surface of the limiting ring (17) near the bottom edge.

4. The steel structure welding device according to claim 1, characterized in that: The bottom of the connector (3) is provided with multiple air supply holes (4), and the top of the heat-melting sleeve (5) is fixed with multiple connecting pipes (13) extending into the air supply holes (4) at equal intervals. The outer surfaces of the multiple connecting pipes (13) are provided with sealing rings (15).

5. A steel structure welding device according to claim 4, characterized in that: The heat-melting sleeve (5) has a buffer cavity (12) inside. The bottom of the multiple connecting pipes (13) are all connected to the top surface of the buffer cavity (12). The bottom surface of the buffer cavity (12) is provided with multiple air jet holes (19) at equal intervals. One end of each of the multiple air jet holes (19) is connected to the interior of the heat-melting cavity (18).

6. A steel structure welding device according to claim 1, characterized in that: A flow guide (7) is fixed on the outer surface of the heat-melting sleeve (5) near the bottom edge, and a heat insulation cover (8) is fixed on the outer surface of the heat-melting sleeve (5) in the middle. A preheating cavity (10) is opened in the inner part of the heat-melting sleeve (5) near the middle.

7. A steel structure welding device according to claim 6, characterized in that: The preheating chamber (10) has multiple return ports (9) that extend to the outer surface of the heat-melting sleeve (5) at equal intervals on the inner bottom surface. One end of each of the multiple return ports (9) is located below the flow guide (7). The preheating chamber (10) has multiple exhaust ports (11) that extend to the outer surface of the heat-melting sleeve (5) at equal intervals on the inner top surface. One end of each of the multiple exhaust ports (11) extends to the lower part of the heat insulation cover (8).

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