Portable automatic submerged arc welding device for omega-shaped tube panel

Abstract

The utility model discloses a portable omega-shaped tube panel automatic submerged arc welding device which comprises a welding device, a moving frame is fixedly installed at the bottom of the welding device, driving wheel sets are arranged on the two sides of the bottom of the moving frame in the moving direction respectively, and guide rods are fixedly arranged on the moving frame in the front-back position of the moving direction respectively. The two ends of the guide rod are respectively provided with a lateral guide device, the center position of the movable frame is correspondingly provided with a center guide device which is detachably installed, the guide rod, located at the front end of the moving direction, on the movable frame is provided with a clamping mechanism capable of adjusting the position along the guide rod, and the clamping mechanism is provided with a welding gun barrel which clamps a welding device. According to the utility model, the application problem of the front and back submerged arc welding of the omega-shaped tube panel is solved, the technical problem of deflection of the weld joint of the super-long tube panel is solved, the production efficiency is improved, and the stability of the submerged arc welding quality is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure vessel and boiler manufacturing, in particular to a portable Ω-type tube-tube-screen automatic submerged arc welding device. Background Art

[0002] Submerged arc welding is a welding method in which an arc burns under a flux layer. Its inherent advantages of stable welding quality, high welding productivity, no arc light and little smoke make it the main welding method in the production of important steel structures such as pressure vessels, pipe segment manufacturing, box beams and columns. Submerged arc welding equipment is generally fixed or large in size, and submerged arc welding has a large current, high energy density, and deep penetration. The welding wire specifications used in the actual production process are also large. It has high production efficiency and quality stability in actual production. Therefore, submerged arc welding is also widely used in the production of boiler water-cooled wall tube panels.

[0003] As a form of tube, the Ω-shaped tube has a cross-section similar to the Ω shape. The Ω-shaped tube is an asymmetric structure with a flat surface on one side and a protruding tube on the other side. Multiple Ω-shaped tubes are welded together to form a water-cooled wall tube screen, with the flat surface facing the inside of the furnace to form a relatively flat surface inside the furnace. The weld of the Ω-shaped tube group welding requires a full penetration structure, and the weld on the flat side requires grinding after welding, that is, a smaller excess height after welding can reduce the workload of subsequent grinding or avoid the grinding process. The length of a single tube screen is relatively long. When a conventional fixed submerged arc welding machine is performing welding work, the workpiece is prone to displacement. Because the pipe spacing is small, the gun head is prone to collision with the workpiece, and the thick gun head is not easy to extend into the weld position. Conventional mobile submerged arc welding equipment is prone to deviation during welding, resulting in weld offset and ultimately defects. The manual welding method has low production efficiency and is difficult to achieve large-scale production. Utility Model Content

[0004] In order to solve the above technical problems, the utility model designs a portable Ω-type tube-tube-screen automatic submerged arc welding device.

[0005] The utility model adopts the following technical solutions:

[0006] A portable Ω-type pipe-panel automatic submerged arc welding device comprises a welding device, wherein a mobile frame is fixedly installed at the bottom of the welding device, driving wheel groups are respectively arranged at the two sides of the bottom of the mobile frame in the moving direction, guide rods are respectively fixedly arranged at the front and rear positions of the mobile frame in the moving direction, lateral guide devices are respectively installed at both ends of the guide rods, a detachable central guide device is correspondingly arranged at the center position of the mobile frame, a clamping mechanism that can adjust the position along the guide rod is installed on the guide rod at the front end of the moving direction of the mobile frame, and a welding gun rod for clamping the welding device is installed on the clamping mechanism.

[0007] Preferably, a slag knocking device and a flux recovery device whose positions can be adjusted along the guide rod are installed on the guide rod at the rear end of the moving direction of the movable frame, and the flux recovery device is connected to the welding device.

[0008] Preferably, the center guide device includes a rotating shaft and a center guide wheel.

[0009] Preferably, the lateral guide device comprises a transversely rotatable guide wheel and a mounting column, wherein the mounting column is fixedly mounted on both ends of the guide rod, and the guide wheel is transversely rotatably connected to the mounting column.

[0010] Preferably, the driving wheel set includes a driving motor, a driving shaft and a driving roller.

[0011] Preferably, the welding gun rod can adjust the clamping position up and down along the clamping mechanism.

[0012] The beneficial effects of the utility model are as follows: the utility model designs a portable Ω-shaped tube-tube-screen automatic submerged arc welding device, which solves the application problem of submerged arc welding of the front and back sides of the Ω-shaped tube-tube-screen, solves the technical problem of deviation of the weld seam of the ultra-long tube screen, improves production efficiency, and ensures the stability of submerged arc welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 This is a structural schematic diagram of the utility model when welding the flat surface of an Ω tube;

[0015] Figure 3 This is a structural schematic diagram of the utility model when welding the protruding tube side of the Ω tube;

[0016] In the figure: 1. welding device, 2. driving wheel set, 3. clamping mechanism, 4. slag knocking device, 5. flux recovery device, 6. lateral guide device, 7. center guide device. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0018] Example: Figure 1As shown, a portable Ω-type pipe-to-pipe-panel automatic submerged arc welding device comprises a welding device 1, a mobile frame is fixedly installed at the bottom of the welding device, driving wheel groups 2 are respectively arranged at the two sides of the moving direction of the bottom of the mobile frame, guide rods are respectively fixedly arranged at the front and rear positions of the moving direction on the mobile frame, lateral guide devices 6 are respectively installed at both ends of the guide rods, a detachable center guide device 7 is correspondingly arranged at the center position of the mobile frame, a clamping mechanism 3 whose position can be adjusted along the guide rod is installed on the guide rod at the front end of the moving direction of the mobile frame, and a welding gun rod for clamping the welding device is installed on the clamping mechanism.

[0019] The guide rod at the rear end of the moving direction of the moving frame is equipped with a slag knocking device 4 and a flux recovery device 5 whose positions can be adjusted along the guide rod, and the flux recovery device is connected to the welding device. The central guide device includes a rotating shaft and a central guide wheel.

[0020] The lateral guide device includes a transversely rotating guide wheel and a mounting column. The mounting column is fixedly installed at both ends of the guide rod, and the guide wheel is transversely rotatably connected to the mounting column. The driving wheel group includes a driving motor, a driving shaft and a driving roller. The welding gun rod can adjust the clamping position up and down along the clamping mechanism.

[0021] When the portable Ω-type pipe-to-pipe automatic submerged arc welding device is used, the workpiece to be processed is placed flat on the workbench and fixed, and the device is hung on the workpiece so that the driving wheel group 2 is in full contact with the surface of the workpiece. Figure 2 As shown, when welding the flat surface of the Ω tube, the center guide device 7 can be removed, the width of the side guide device 6 can be adjusted, the guide wheels in the side guide device 6 can be contacted with the edges on both sides of the workpiece in the width direction, and the device can be clamped until it can move forward and backward smoothly without offset, and then fixed. The welding gun rod is properly installed on the clamping mechanism 3 in the forward direction of the device movement, and the clamping mechanism 3 is adjusted so that the position of the welding gun rod matches the position to be welded, and the clamping mechanism 3 is locked. The slag knocking device 4 and the flux recovery device 5 are properly installed on the clamping mechanism 3 at the rear of the device movement, and the clamping mechanism 3 is adjusted so that its position matches the weld position, and the clamping mechanism 3 is locked. Connect the power supply, gas source, etc. of the device, start the device, the flux flows out from the front welding gun rod position and covers the position to be welded, the arc is struck and welding begins, the driving wheel group starts to rotate, and the entire device is driven to move at a speed specified by the welding parameters. The side guide device 6 is always in contact with both sides of the workpiece to maintain the straightness of the weld. The flux recovery device 5 collects the excess flux at the rear of the device, and the slag knocking device 4 operates at the same time to break up the slag covering the weld surface and separate it from the weld.

[0022] like Figure 3As shown, when welding the protruding side of the Ω tube, it is necessary to install the center guide device 7 on the connecting rod of the side guide device 6, adjust the guide wheel to be stuck between the two tubes, and then adjust the width of the side guide device 6, so that the guide wheel in the side guide device 6 contacts the edges on both sides of the width direction of the workpiece, and clamp it until the device can move forward and backward smoothly without offset, and then fix it. Install the welding gun rod on the clamping mechanism 3 in the forward direction of the device movement, adjust the clamping mechanism 3 so that the position of the welding gun rod matches the position to be welded, and lock the clamping mechanism 3. Install the slag knocking device 4 and the flux recovery device 5 on the clamping mechanism 3 at the rear of the device movement, adjust the clamping mechanism 3 so that its position matches the weld position, and lock the clamping mechanism 3. Connect the power supply, gas source, etc. of the device, start the device, the flux flows out from the front gun barrel position and covers the position to be welded, the arc is struck and welding begins, the driving wheel group starts to rotate, and the entire device is driven to move at a speed specified by the welding parameters. The side guide device 6 is always in contact with both sides of the workpiece to maintain the straightness of the weld. The flux recovery device 5 collects the excess flux at the rear of the device, and the slag knocking device 4 operates at the same time to break up the slag covering the weld surface and separate it from the weld.

[0023] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A portable Ω-type tube-tube-panel automatic submerged arc welding device, comprising a welding device, characterized in that: A moving frame is fixedly installed at the bottom of the welding device, and driving wheel groups are respectively arranged on both sides of the moving direction of the bottom of the moving frame, and guide rods are respectively fixedly arranged on the moving frame at the front and rear positions in the moving direction, and lateral guide devices are respectively installed at both ends of the guide rods. A detachable center guide device is correspondingly arranged at the center position of the moving frame, and a clamping mechanism that can adjust the position along the guide rod is installed on the guide rod at the front end of the moving direction of the moving frame, and a welding gun rod for clamping the welding device is installed on the clamping mechanism.

2. A portable Ω-type tube-tube-panel automatic submerged arc welding device according to claim 1, characterized in that: A slag knocking device and a flux recovery device whose positions can be adjusted along the guide rod are installed on the guide rod at the rear end of the moving direction of the moving frame, and the flux recovery device is connected to the welding device.

3. A portable Ω-type tube-tube-panel automatic submerged arc welding device according to claim 1, characterized in that: The central guide device comprises a rotating shaft and a central guide wheel.

4. A portable Ω-type tube-tube-panel automatic submerged arc welding device according to claim 1, characterized in that: The lateral guide device comprises a guide wheel which rotates laterally and a mounting column. The mounting column is fixedly mounted on both ends of the guide rod, and the guide wheel is connected to the mounting column in a laterally rotating manner.

5. The portable Ω-type tube-tube-panel automatic submerged arc welding device according to claim 1 is characterized in that: The driving wheel set comprises a driving motor, a driving shaft and a driving roller.

6. A portable Ω-type tube-tube-panel automatic submerged arc welding device according to claim 1, characterized in that: The welding gun rod can adjust the clamping position up and down along the clamping mechanism.

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