Limiting device for submerged arc automatic girth welding

Abstract

The utility model discloses a kind of control submerged arc automatic annular welding stack limiting device, including center column, reference column, rotating sleeve, crossbeam, rocker arm, support rod, fixed rod, the center column is fixed in product center, the reference column is fixed in the center of the center column, the rotating sleeve is sleeved on the reference column and can rotate along the rotating sleeve, one end of the crossbeam is fixed in the rotating sleeve, the other end is sleeved the rocker arm, one end of the rocker arm is inserted into the crossbeam, the other end is fixed the support rod, the fixed rod is two and is respectively fixed in the both ends of the support rod. The utility model reduces artificial cost, improves welding material utilization, reduces weld repair rate, improves ball valve sealing ring guide surface stack efficiency and quality.

Description

Technical Field

[0001] This utility model relates to welding, specifically a limiting device for controlling submerged arc automatic circumferential welding overlay. Background Technology

[0002] Currently, the welding process for the sealing ring guide surface is done manually. However, manual welding is not conducive to automation, resulting in low efficiency, long cycle time, and wasting time and effort.

[0003] Manual welding has the following problems:

[0004] Manual welding is labor-intensive and inefficient.

[0005] The internal flaw detection quality of manually welded surfaces has numerous defects.

[0006] This welding work cannot be performed using belt-type welding equipment. Utility Model Content

[0007] To address the shortcomings of the existing technology, this invention provides a limiting device for controlling submerged arc automatic circumferential welding. This invention reduces labor costs, improves welding material utilization, lowers weld rework rate, and enhances the welding efficiency and quality of the ball valve sealing ring guide surface.

[0008] To achieve the above technical objectives, this utility model adopts the following technical solution: a limiting device for controlling submerged arc automatic circumferential welding, comprising a central column, a reference column, a rotating sleeve, a crossbeam, a rocker arm, a support rod, and a fixing rod. The central column is fixed to the center of the product, the reference column is fixed to the center of the central column, the rotating sleeve is sleeved on the reference column and can rotate along the rotating sleeve, one end of the crossbeam is fixed to the rotating sleeve and the other end is sleeved on the rocker arm, one end of the rocker arm extends into the crossbeam and the other end is fixed to the support rod, and there are two fixing rods, which are respectively fixed to the two ends of the support rod.

[0009] The outer wall of the reference column is provided with multiple limiting annular grooves of different heights in the circumferential direction. The rotating sleeve is provided with at least two limiting bolts. The inner ends of the at least two limiting bolts can be limited in two of the limiting annular grooves, so that the rotating sleeve can be adjusted to different heights.

[0010] The outer wall of the rocker arm is provided with a fastening groove along its length, and the crossbeam is provided with a plurality of fastening bolts. The inner end of the fastening bolts can be fastened in the fastening groove so that the exposed length of the rocker arm can be adjusted.

[0011] The rotating sleeve is provided with a counterweight rod at the opposite position of the crossbeam for loading the counterweight block.

[0012] The rocker arm is provided with a diagonal brace, and the other end of the diagonal brace is fixed to the support rod.

[0013] The lower side of the crossbeam is also provided with a support wheel assembly, which includes a lateral adjustment plate and a wheel frame. The lateral adjustment plate is fastened to the crossbeam by adjusting bolts. The lower side of the lateral adjustment plate is provided with a fastening plate, which has a vertical waist-shaped hole. The upper side of the wheel frame is fixed with an adjustment plate, which has two fixing holes and is fastened to the waist-shaped hole with two fixing bolts. The wheel frame is equipped with pulleys.

[0014] In summary, this utility model achieves the following technical effects:

[0015] This utility model changes the original manual welding to submerged arc automatic welding, which reduces labor costs, improves the utilization rate of welding materials, and reduces the weld rework rate.

[0016] This invention features a rotating cylinder that enables 360° welding and meets the needs of different heights, while the rocker arm can accommodate products of different diameters. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a limiting device for controlling automatic submerged arc welding of circular weld overlays;

[0018] Figure 2 yes Figure 1 Side perspective view;

[0019] Figure 3 yes Figure 1 Another structural side view;

[0020] Figure 4 yes Figure 3 A partial schematic diagram. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings.

[0022] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] Example:

[0028] Figure 1This is a schematic diagram of a limiting device for controlling automatic submerged arc welding and overlaying. It includes a central column 1, a reference column 2, a rotating sleeve 3, a crossbeam 4, a rocker arm 6, a support rod 8, and a fixing rod 9. The central column 1 is fixed to the center of the product, and the reference column 2 is fixed to the center of the central column 1. The rotating sleeve 3 is sleeved on the reference column 2 and can rotate along the rotating sleeve 3. One end of the crossbeam 4 is fixed to the rotating sleeve 3, and the other end is sleeved on the rocker arm 6. One end of the rocker arm 6 extends into the crossbeam 4, and the other end is fixed to the support rod 8. There are two fixing rods 9, which are respectively fixed to the two ends of the support rod 8.

[0029] This utility model fixes the limiting device at the center of the product's annular sealing ring, and extends the crossbeam 4 and rocker arm 6 outward in a radial formation, so that the support rod 8 and fixing rod 9 are located at the welding point of the sealing ring. An automatic submerged arc welding machine (not shown) is installed on the fixing rod 9. With the rotation function of the rotating sleeve 3, the annular welding and overlay function of the product can be realized in 360°. The automatic submerged arc welding machine is limited to a certain position, and the annular welding process is automatically realized.

[0030] Figure 2 yes Figure 1 In the side perspective view, the outer wall of the reference column 2 is provided with a plurality of limiting ring grooves 201 of different heights in the circumferential direction. The rotating sleeve 3 is provided with at least two limiting bolts 10. The inner ends of the at least two limiting bolts 10 can be limited in two of the limiting ring grooves 201, so that the rotating sleeve 3 can be adjusted to different heights.

[0031] This utility model can adapt to welding at different heights. The height of the rotating sleeve 3 can be adjusted by loosening the limiting bolt 10, raising or lowering the rotating sleeve 3 to a suitable position, and then aligning the inner end of the limiting bolt 10 with the limiting ring groove 201 and tightening it slightly. The inner end face of the bolt is located in the ring groove, which prevents the rotating sleeve from falling down, but also prevents it from being tightened too much and thus preventing it from rotating, making it easy to achieve 360° welding.

[0032] like Figure 2 As shown, the outer wall of the rocker arm 6 is provided with a fastening groove 601 along the length direction, and the crossbeam 4 is provided with a plurality of fastening bolts 5. The inner end of the fastening bolt 5 can be fastened in the fastening groove 601 so that the exposed length of the rocker arm 6 can be adjusted.

[0033] When changing to products of different diameters, loosen multiple fastening bolts 5, adjust the rocker arm inward or outward to the appropriate position, and then tighten the fastening bolts 5 to adapt to different diameter applications.

[0034] The rotating sleeve 3 is provided with a counterweight rod 11 at the opposite position of the crossbeam 4 to load the counterweight block, prevent the entire device from tipping over and maintain stability.

[0035] The rocker arm 6 is provided with a diagonal brace 12, and the other end of the diagonal brace 12 is fixed to the support rod 8 to ensure stability and safety.

[0036] Figure 3 yes Figure 1 Another structural side view, Figure 4 yes Figure 3 A partial schematic diagram shows that the lower side of the crossbeam 4 is also provided with a support wheel assembly 7. The support wheel assembly 7 includes a transverse adjustment plate 701 and a wheel frame 704. The transverse adjustment plate 701 is fastened to the crossbeam 4 by adjusting bolts. The lower side of the transverse adjustment plate 701 is provided with a fastening plate 702. The fastening plate 702 has a vertical waist-shaped hole 703. The upper side of the wheel frame 704 is fixed with an adjustment plate 705. The adjustment plate 705 has two fixing holes 706 and is fastened to the waist-shaped hole 703 with two fixing bolts 707. The wheel frame 704 is equipped with a pulley 708. The present invention features a support wheel assembly 7 that provides support and prevents the device from tipping over. When changing to products of different diameters, an elongated hole is provided on the lower side of the crossbeam 4. Loosen the adjusting bolt, move the transverse adjusting piece 701, and then tighten the adjusting bolt so that the pulley 708 is located on the inner ring of the product (not shown, the inner ring diameter is smaller than the sealing ring diameter) to provide support. When the height of the rotating sleeve needs to be adjusted, loosen the fixing bolt 707, then adjust the height of the adjusting piece 705 to the appropriate position, and then tighten the fixing bolt 707.

[0037] The start / stop, current / voltage, and wire feed speed adjustments of the welding mechanism of this utility model are completed by the submerged arc welding system itself, and this fixture does not require a dedicated control mechanism. The traveling mechanism is located at the far end of the crossbeam and is driven by a motor to rotate the crossbeam circumferentially via support wheels. The traveling mechanism is supported on the support plane shown in the attached drawing or powered by a central column, driving the crossbeam and the far-end welding system to rotate circumferentially. However, the deflection of the crossbeam under load should be considered, and a support wheel mechanism should be installed at the far end of the crossbeam if necessary. The crossbeam has sufficient rigidity and is properly designed and connected to the welding mechanism. When the welding machine is not in use, the crossbeam should be... The fixture should be able to maintain balance (with necessary counterweights) and should be equipped with lifting points. It should have a control panel to control the start / stop of the beam's circumferential rotation, speed, forward / reverse direction, and welding torch oscillation. The fixture should have radial and height adjustment functions, which can be adjusted mechanically or manually, with an adjustment range of ±500mm. The electrical connection of the fixture's central column mechanism should enable wireless rotation, or continuous rotation for at least two rotations before reversing to avoid cable tangling. The electrical system should adopt my country's standard industrial voltage of three-phase four-wire AC 380V, industrial frequency of 50Hz, and a voltage fluctuation range of 380V±10%.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A limiting device for controlling automatic submerged arc welding of circumferential weld overlay, characterized in that: The product includes a central column (1), a reference column (2), a rotating sleeve (3), a crossbeam (4), a rocker arm (6), a support rod (8), and a fixing rod (9). The central column (1) is fixed to the center of the product, the reference column (2) is fixed to the center of the central column (1), the rotating sleeve (3) is sleeved on the reference column (2) and can rotate along the rotating sleeve (3), one end of the crossbeam (4) is fixed to the rotating sleeve (3), and the other end is sleeved on the rocker arm (6). One end of the rocker arm (6) extends into the crossbeam (4), and the other end is fixed to the support rod (8). There are two fixing rods (9) and they are respectively fixed to the two ends of the support rod (8).

2. The limiting device for controlling automatic submerged arc welding surfacing as described in claim 1, characterized in that: The outer wall of the reference column (2) is provided with multiple limiting ring grooves (201) of different heights. The rotating sleeve (3) is provided with at least two limiting bolts (10). The inner ends of the at least two limiting bolts (10) can be limited in two of the limiting ring grooves (201) so that the rotating sleeve (3) can be adjusted to different heights.

3. The limiting device for controlling automatic submerged arc welding surfacing as described in claim 1, characterized in that: The outer wall of the rocker arm (6) is provided with a fastening groove (601) along the length direction. The crossbeam (4) is provided with a plurality of fastening bolts (5). The inner end of the fastening bolt (5) can be fastened in the fastening groove (601) so that the exposed length of the rocker arm (6) can be adjusted.

4. The limiting device for controlling automatic submerged arc welding surfacing as described in claim 1, characterized in that: The rotating sleeve (3) is provided with a counterweight rod (11) at the opposite position of the crossbeam (4) for loading counterweight blocks.

5. The limiting device for controlling automatic submerged arc welding surfacing as described in claim 1, characterized in that: The rocker arm (6) is provided with a diagonal brace (12), and the other end of the diagonal brace (12) is fixed to the support rod (8).

6. The limiting device for controlling automatic submerged arc welding surfacing as described in claim 1, characterized in that: The lower side of the crossbeam (4) is also provided with a support wheel assembly (7). The support wheel assembly (7) includes a transverse adjustment plate (701) and a wheel frame (704). The transverse adjustment plate (701) is fastened to the crossbeam (4) by an adjustment bolt. The lower side of the transverse adjustment plate (701) is provided with a fastening plate (702). The fastening plate (702) has a vertical waist-shaped hole (703). The upper side of the wheel frame (704) is fixed with an adjustment plate (705). The adjustment plate (705) has two fixing holes (706) and is fastened to the waist-shaped hole (703) with two fixing bolts (707). The wheel frame (704) is equipped with a pulley (708).

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