Welding device for boiler pipeline

Abstract

The utility model provides a boiler pipeline welding device which comprises a center base station, two sets of lead screws are rotationally installed on the center base station, two lead screws form one set, one end of each lead screw penetrates through a movable platform to be fixedly connected with the output end of a driving motor, the lead screws are fixedly connected with the movable platform through ball nuts, and the ball nuts are fixedly connected with the output end of the driving motor. A base is arranged on one side of the movable platform, and the two driving motors are fixedly mounted on the base; a rotating seat is fixedly mounted on the moving platform, and a locking rotating machine is fixedly mounted on the rotating seat; on the premise that the boiler pipeline is locked and fixed, the boiler pipeline can still conduct autorotation motion, auxiliary welding operation is facilitated, in addition, the rotating seat can drive the pipeline to conduct circular track motion through the locking rotating machine, bend angle welding of the pipeline can be achieved, and in addition, welding efficiency is improved. And the distance between the two locking rotating machines is adjusted through the thread transmission mechanism, the welding angle of the bent pipe is enlarged, and the free flexibility of operation can be improved conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline welding, and in particular relates to a welding device for boiler pipelines. Background Art

[0002] A boiler is an energy conversion device that uses the heat energy released by fuel combustion or other heat energy to heat working water or other fluids to certain parameters. In addition to the pot and furnace, the boiler also has auxiliary equipment such as frames, platforms, escalators, combustion, slag discharge, smoke and air ducts, pipes, furnace walls, etc. Among them, when producing boiler pipes, in order to ensure the length of the boiler pipes, welding equipment is needed to weld multiple groups of boiler pipes.

[0003] At present, welding brackets or welding positioning devices are required in the welding process of boiler pipes. The existing brackets or welding positioning devices can generally only perform positioning welding on two pipes that are on the same straight line. In addition, it is necessary to build brackets with suitable angles to complete angle welding. The operation freedom and flexibility are low, and there are obvious defects. Secondly, most of them use horizontal clamping to fix the pipes, which has poor fixing effect and the boiler pipes are easily affected by the outside world and move.

[0004] Therefore, it is very necessary to invent a welding device for boiler pipes. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a welding device for boiler pipes, including a central base, a lead screw, a mobile platform, a driving motor, a base, a rotating seat and a locking rotating machine, two groups of the lead screws are rotatably installed on the central base, two in one group, one end of the lead screw passes through the mobile platform and is fixedly connected to the output end of the driving motor, the lead screw is fixedly connected to the mobile platform through a ball nut, a base is provided on one side of the mobile platform, two driving motors are fixedly installed on the base; a rotating seat is fixedly installed on the mobile platform, and a locking rotating machine is fixedly installed on the rotating seat;

[0006] The locking rotating machine includes a base, a positioning seat, a limiting arm, a locking motor, a rotating head and a servo motor. The base is fixedly connected to the rotating seat. The positioning seat is fixedly installed on the base. Two locking motors are fixedly installed on the positioning seat. The output end of the locking motor rotates through the positioning seat and is fixedly connected to one end of the limiting arm. At least three rotating heads are rotatably installed on the limiting arm. Any end of one of the rotating heads rotates through the limiting arm and is fixedly connected to the output end of the servo motor. The servo motor is fixedly installed on the limiting arm.

[0007] Preferably, the mobile platform is a rectangular structure, and directional wheels are fixedly installed at the four lower corners of the mobile platform respectively, and a lead screw and a ball nut are arranged inside the slot hole opened in the mobile platform.

[0008] Preferably, the rotating seat is composed of a fixed seat, a built-in motor and a rotating shaft. The fixed seat of the rotating seat is fixedly installed on the mobile platform, and the built-in motor is fixedly installed inside the fixed seat. The output end of the built-in motor is fixedly connected to the lower end of the rotating shaft, and the upper end of the rotating shaft is fixedly connected to the base.

[0009] Preferably, the positioning seat is a "concave"-shaped structure, and slots are provided on both sides of the upper side of the positioning seat to allow the limiting arm to move. The limiting arm is an arc-shaped structure, and two limiting arms are provided.

[0010] Preferably, a notch is provided on the limiting arm to allow the rotating head to rotate, and the rotating head is rotatably installed in the notch of the limiting arm.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model uses a locking rotating machine to lock and fix two pipes to be welded in an embracing manner, and this fixing method can firmly restrict the boiler steel pipe. Secondly, under the premise of locking and fixing the boiler pipe, the boiler pipe can still rotate on its own, which is convenient for auxiliary welding operations. In addition, the locking rotating machine is installed above the rotating seat, and the rotating seat can drive the pipe to move in a circular trajectory through the locking rotating machine, so that the two pipes can be welded at an angle. In addition, the distance between the two locking rotating machines is adjusted by a threaded transmission mechanism to expand the welding angle, which is convenient for improving the freedom and flexibility of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 It is another overall structural schematic diagram of the utility model.

[0015] Figure 3 It is a structural schematic diagram of the locking rotating machine of the utility model.

[0016] In the figure:

[0017] Central base 1, lead screw 2, moving platform 3, driving motor 4, base 5, rotating seat 6, locking rotating machine 7, base 71, positioning seat 72, limiting arm 73, locking motor 74, rotating head 75, servo motor 76. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0019] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and do 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 therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0020] As attached Figure 1 To Attachment Figure 3 As shown:

[0021] The utility model provides a welding device for boiler pipes, comprising a central base 1, a lead screw 2, a mobile platform 3, a drive motor 4, a base 5, a rotating seat 6 and a locking rotating machine 7. Two groups of the lead screws 2 are rotatably installed on the central base 1, two of which form a group. One end of the lead screw 2 passes through the mobile platform 3 and is fixedly connected to the output end of the drive motor 4. The lead screw 2 is fixedly connected to the mobile platform 3 through a ball nut. A base 5 is provided on one side of the mobile platform 3, and two of the drive motors 4 are fixedly installed on the base 5; a rotating seat 6 is fixedly installed on the mobile platform 3, and a locking rotating machine 7 is fixedly installed on the rotating seat 6. The lead screw 2, the mobile platform 3, the drive motor 4 and the base 5 are a threaded transmission mechanism.

[0022] The locking rotating machine 7 includes a base 71, a positioning seat 72, a limiting arm 73, a locking motor 74, a rotating head 75 and a servo motor 76. The base 71 is fixedly connected to the rotating seat 6. A positioning seat 72 is fixedly installed on the base 71. Two locking motors 74 are fixedly installed on the positioning seat 72. The output end of the locking motor 74 rotates through the positioning seat 72 and is fixedly connected to the limiting arm 73. At least three rotating heads 75 are rotatably installed on the limiting arm 73. Any end of one of the rotating heads 75 rotates through the limiting arm 73 and is fixedly connected to the output end of the servo motor 76. The servo motor 76 is fixedly installed on the limiting arm 73. Two groups of rotating heads 75 are provided, one group is provided with at least three, and only one rotating head 75 in a group is fixedly connected to the output end of the servo motor 76. The locking rotating machine 7 is used to lock and fix the pipeline in an embracing manner. Example

[0023] Specifically, the mobile platform 3 is a rectangular structure, and directional wheels are fixedly installed at the four corners below the mobile platform 3. A lead screw 2 and a ball nut are arranged on the inner side of the slot hole opened in the mobile platform 3. The directional wheels installed below the mobile platform 3 are used to improve the smoothness of movement.

[0024] Specifically, the rotating seat 6 is composed of a fixed seat, a built-in motor and a rotating shaft. The fixed seat of the rotating seat 6 is fixedly installed on the mobile platform 3. The built-in motor is fixedly installed inside the fixed seat. The output end of the built-in motor is fixedly connected to the lower end of the rotating shaft. The upper end of the rotating shaft is fixedly connected to the base 71. The rotating seat 6 is used to drive the locking rotating machine 7 to rotate, and drive the pipeline to move in a circular trajectory through the locking rotating machine 7.

[0025] Specifically, the positioning seat 72 is a "concave" shaped structure, and slots are provided on both sides above the positioning seat 72 to allow the limiting arm 73 to move. The limiting arm 73 is an arc-shaped structure, and two limiting arms 73 are provided. The recessed area above the positioning seat 72 is an arc-shaped groove, and the positioning seat 72 is divided into a rectangular portion and a recessed portion.

[0026] Specifically, a notch is provided on the limiting arm 73 to allow the rotating head 75 to rotate. The rotating head 75 is rotatably installed in the notch of the limiting arm 73. The limiting arm 73 surrounds the outside of the pipeline and locks and fixes the pipeline.

[0027] Working principle:

[0028] When it is necessary to weld the boiler pipes, the two pipes to be welded are horizontally placed on the base 71 (recessed part) of the locking rotating machine 7. At this time, the locking motor 74 of the locking rotating machine 7 is turned on, and the locking motor 74 drives the limit arm 73, which moves inward and gradually approaches the pipe until the rotating head 75 installed on the limit arm 73 is in close contact with the outer wall of the pipe, so that the pipe is tightly locked and fixed. After the pipe is fixed, if it is necessary to make an angle welding on the pipe, the built-in motor of the rotating seat 6 drives the locking rotating machine 7 through the rotating shaft, and the locking rotating machine 7 drives the pipe Rotational motion occurs until the welding points of the two pipes contact each other. If the two pipes cannot contact each other, the drive motor 4 is turned on, and the drive motor 4 drives the screw 2. The screw 2 drives the moving platform 3 through the ball nut, and the moving platform 3 moves to gradually bring the two pipes closer until the welding points contact each other. It should be noted that when welding a bent pipe, the locking rotating machine 7 cannot drive the pipe to rotate. If it is not a bent pipe welding, the servo motor 76 of the locking rotating machine 7 drives the rotating head 75, and the rotating head 75 drives the pipe to rotate, thereby improving the welding efficiency of the pipe.

[0029] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A welding device for boiler pipes, characterized in that: The invention comprises a central base (1), a lead screw (2), a mobile platform (3), a drive motor (4), a base (5), a rotating seat (6) and a locking rotating machine (7), wherein two groups of the lead screws (2) are rotatably mounted on the central base (1), two of which form a group, one end of the lead screw (2) passes through the mobile platform (3) and is fixedly connected to the output end of the drive motor (4), the lead screw (2) is fixedly connected to the mobile platform (3) via a ball nut, a base (5) is provided on one side of the mobile platform (3), and two of the drive motors (4) are fixedly mounted on the base (5); a rotating seat (6) is fixedly mounted on the mobile platform (3), and a locking rotating machine (7) is fixedly mounted on the rotating seat (6); The locking rotating machine (7) comprises a base (71), a positioning seat (72), a limiting arm (73), a locking motor (74), a rotating head (75) and a servo motor (76); the base (71) is fixedly connected to the rotating seat (6); a positioning seat (72) is fixedly mounted on the base (71); two locking motors (74) are fixedly mounted on the positioning seat (72); an output end of the locking motor (74) rotates through the positioning seat (72) and is fixedly connected to one end of the limiting arm (73); at least three rotating heads (75) are rotatably mounted on the limiting arm (73); any end of one of the rotating heads (75) rotates through the limiting arm (73) and is fixedly connected to the output end of the servo motor (76); and the servo motor (76) is fixedly mounted on the limiting arm (73).

2. A welding device for boiler pipes according to claim 1, characterized in that: The mobile platform (3) is a rectangular structure, and directional wheels are fixedly mounted at the four lower corners of the mobile platform (3), and a lead screw (2) and a ball nut are arranged inside a slot hole provided in the mobile platform (3).

3. A welding device for boiler pipes according to claim 1, characterized in that: The rotating seat (6) is composed of a fixed seat, a built-in motor and a rotating shaft. The fixed seat of the rotating seat (6) is fixedly mounted on the moving platform (3). The built-in motor is fixedly mounted inside the fixed seat. The output end of the built-in motor is fixedly connected to the lower end of the rotating shaft. The upper end of the rotating shaft is fixedly connected to the base (71).

4. A welding device for boiler pipes according to claim 1, characterized in that: The positioning seat (72) is a "concave"-shaped structure. Notches are provided on both sides of the upper side of the positioning seat (72) to allow the limiting arm (73) to move. The limiting arm (73) is an arc-shaped structure, and two limiting arms (73) are provided.

5. A welding device for boiler pipes as claimed in claim 4, characterized in that: The limiting arm (73) is provided with a notch for allowing the rotating head (75) to rotate, and the rotating head (75) is rotatably mounted in the notch of the limiting arm (73).

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