Welding tool device for submerged-arc welding of annular workpiece

Abstract

The utility model provides a welding tool device for submerged-arc welding of an annular workpiece. The welding tool device comprises a rotating disc support, a rotating disc base, a supporting device, a rotating device and a submerged-arc welding machine supporting device. The rotating disc base supports the rotating disc support through the supporting device, the rotating disc support is used for supporting an annular workpiece, the rotating device is used for rotating the rotating disc support, and the submerged arc welding machine supporting device is located beside the rotating disc support and used for supporting an automatic submerged arc welding machine. And the automatic submerged-arc welding machine is used for performing submerged-arc welding on the annular workpiece rotating on the turntable bracket. According to the utility model, submerged-arc welding of the annular workpiece is realized, the workload of handle welding is reduced, the welding production efficiency of the workpiece is improved, and the first-pass yield of weld flaw detection of the annular workpiece is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of submerged arc welding technology for splicing ring-shaped workpieces, and more specifically to a welding fixture for submerged arc welding of ring-shaped workpieces. Background Technology

[0002] Submerged arc welding is a welding method in which an electric arc burns under a layer of flux. It has many advantages such as stable welding quality, high welding productivity, no arc light and less smoke and dust. It is mainly used in the fabrication of important steel structures such as pressure vessels, marine structures, and box beams and columns.

[0003] For large-diameter (6m-10m) ring-shaped workpieces, manual welding leads to reduced welding efficiency, increased weld defects, and lower first-pass yield rates in flaw detection. Existing automatic submerged arc welding machines cannot directly weld ring-shaped workpieces without modification. Utility Model Content

[0004] To address the aforementioned technical problems, a welding fixture for submerged arc welding of annular workpieces is provided.

[0005] The technical means adopted in this utility model are as follows:

[0006] A welding fixture for submerged arc welding of annular workpieces includes a turntable support, a turntable base, a support device, a rotating device, and a submerged arc welding machine support device.

[0007] The turntable base supports the turntable bracket via the support device, and the turntable bracket is used to support the annular workpiece. The rotating device is used to rotate the turntable bracket. The submerged arc welding machine support device is located next to the turntable bracket and is used to support the automatic submerged arc welding machine. The automatic submerged arc welding machine is used to perform submerged arc welding on the annular workpiece rotating on the turntable bracket.

[0008] Preferably, the support device includes a connecting circular plate, a turntable rotating gear, a gear base circular plate, and a steel pipe;

[0009] The connecting circular plate is fixed to the bottom center of the turntable bracket, the turntable rotating gear is fixed to the bottom of the connecting circular plate, the bottom of the steel pipe is fixedly connected to the turntable base, the top of the steel pipe is fixedly connected to the gear base circular plate, the gear base circular plate is rotatably connected to the turntable rotating gear, the rotating device has a transmission gear, and the transmission gear meshes with the turntable rotating gear.

[0010] Preferably, the rotating device includes an integrated cycloidal reducer, and the transmission gear is mounted on the output shaft of the integrated cycloidal reducer.

[0011] Preferably, the rotating device includes the transmission gear and a drive mechanism for driving the transmission gear to rotate. The drive mechanism includes an integrated cycloidal reducer or a three-phase asynchronous motor and a reduction gearbox connected to the output shaft of the three-phase asynchronous motor via a coupling.

[0012] Preferably, the rotating device further includes a motor base disposed at the bottom of the drive mechanism. The motor base is composed of angle steel, square tube or steel plate, and the motor base is welded and fixed to the turntable base and the drive mechanism.

[0013] Preferably, the submerged arc welding machine support device includes a submerged arc welding bracket and a welding machine travel track fixed to the top of the submerged arc welding bracket, wherein the welding machine travel track cooperates with the wheels of the automatic submerged arc welding machine.

[0014] Preferably, the submerged arc welding machine support device further includes a first shim for adjusting the levelness of the submerged arc welding bracket.

[0015] Preferably, the bottom of the turntable base is provided with a second shim for adjusting the levelness of the turntable base.

[0016] Preferably, the annular workpiece is an annular spliced ​​beam, a semi-circular or circular spliced ​​component.

[0017] Preferably, the turntable support is formed by splicing together multiple I-beams, angle steels, or square tubes. A stop block or a plate is welded to the contact point between the turntable support and the annular workpiece, or the turntable support is directly welded to the annular workpiece to prevent the annular workpiece from shaking when it rotates.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. In this utility model, the annular workpiece is first placed on a turntable support, and the contact point between the annular workpiece and the turntable support is spot-welded to prevent the workpiece from shaking during rotation. Based on the welding speed requirements of the welding process, the output speed of the reduction gearbox, i.e., the speed of the motor drive gear, is adjusted to adjust the speed of the turntable gear, thereby adjusting the linear velocity of the outer circle of the annular workpiece (the submerged arc welding speed of the workpiece is generally 400-550 mm / min). Depending on the size and height of the workpiece, the height of the submerged arc welding machine support is adjusted using copper or wooden shims. The position of the automatic submerged arc welding machine on the travel track is adjusted according to the welding position of the workpiece. The levelness of the turntable base is adjusted using steel or wooden plates to prevent the annular workpiece from vibrating up and down during rotation. Finally, after powering the three-phase asynchronous motor and the automatic submerged arc welding machine, welding can begin. This utility model achieves submerged arc welding of annular workpieces, reducing the workload of manual welding and improving the welding production efficiency of the workpiece.

[0020] 2. Due to the advantages of stable and reliable submerged arc welding quality, the first-pass yield of flaw detection for weld seams of circumferential workpieces is greatly improved.

[0021] Based on the above reasons, this utility model can be widely promoted in fields such as welding of ring-shaped workpieces. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a front view of a submerged arc welding fixture for an annular workpiece according to the present invention.

[0024] Figure 2 This is a top view of a submerged arc welding fixture for an annular workpiece according to the present invention.

[0025] Figure 3 This is a side view of a submerged arc welding fixture for an annular workpiece according to the present invention.

[0026] In the diagram: 1. Turntable base; 2. Steel pipe; 3. Turntable support; 4. Turntable rotating gear; 5. Gear base circular plate; 6. Connecting circular plate; 7. Motor base; 8. Three-phase asynchronous motor; 9. Gearbox; 10. Transmission gear; 11. Submerged arc welding machine support; 12. Welding machine travel track; 13. Automatic submerged arc welding machine; 14. Ring-shaped workpiece. Detailed Implementation

[0027] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0031] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0032] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0033] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0034] As shown in the figure, a submerged arc welding fixture for annular workpieces includes a turntable support 3, a turntable base 1, a support device, a rotating device, and a submerged arc welding machine support device.

[0035] The turntable base 1 supports the turntable bracket 3 via the support device, and the turntable bracket 3 supports the annular workpiece 14. The turntable bracket 3 is formed by splicing multiple I-beams, angle steels, or square tubes. A stop block or a support plate is welded to the contact point between the turntable bracket 3 and the annular workpiece 14, or the bracket is directly welded to the annular workpiece to prevent the annular workpiece 14 from shaking during rotation. The annular workpiece 14 is an annular spliced ​​beam, a semi-circular, or a circular spliced ​​component.

[0036] The support device includes a connecting circular plate 6, a turntable rotating gear 4, a gear base circular plate 5, and a steel pipe 2. The connecting circular plate 6 is fixed to the bottom center of the turntable bracket 3, the turntable rotating gear 4 is fixed to the bottom of the connecting circular plate 6, the bottom of the steel pipe 2 is fixedly connected to the turntable base 1, the top of the steel pipe 2 is fixedly connected to the gear base circular plate 5, and the gear base circular plate 5 is rotatably connected to the turntable rotating gear 4. A second shim for adjusting the levelness of the turntable base 1 is provided at the bottom of the turntable base 1.

[0037] The rotating device is used to rotate the turntable support 3. The rotating device includes an integrated cycloidal reducer or a reduction gearbox 9 connected to a three-phase asynchronous motor 8 via a coupling. A transmission gear 10 that meshes with the turntable rotating gear 4 is mounted on its output shaft. The three-phase asynchronous motor 8 is fixed by a motor base 7, which is composed of angle steel, square tubing, or steel plate. The motor base 7 is welded and fixed to the turntable base 1.

[0038] The submerged arc welding machine support device is located beside the turntable bracket 3 and is used to support the automatic submerged arc welding machine 13. The automatic submerged arc welding machine 13 is used to perform submerged arc welding on the annular workpiece rotating on the turntable bracket. The submerged arc welding machine support device includes a submerged arc welding bracket 11 and a welding machine travel track 12 fixed to the top of the submerged arc welding bracket 11. The welding machine travel track 12 cooperates with the wheels of the automatic submerged arc welding machine 13. The submerged arc welding machine support device 13 also includes a first shim for adjusting the levelness of the submerged arc welding bracket 11. The first shim can be made of copper plate or wood board or similar structures.

[0039] First, place the annular workpiece 13 on the turntable support 3. Spot weld the annular workpiece 14 to the turntable support 3 at the contact point to prevent the workpiece from shaking during rotation. Adjust the output speed of the reduction gearbox 9 (i.e., the speed of the transmission gear 10) according to the welding speed requirements of the welding process. This speed is used to adjust the rotation speed of the turntable rotation gear 4, thereby adjusting the linear velocity of the outer circle of the annular workpiece 14 (the submerged arc welding speed of the workpiece is generally 400-550 mm / min). Adjust the height of the submerged arc welding machine support 11 using a copper plate or wooden board according to the size and height of the annular workpiece 14. Adjust the position of the automatic submerged arc welding machine 13 on the travel track 12 according to the position of the workpiece to be welded. Adjust the levelness of the turntable base 1 using a second shim (steel plate or wooden board) to prevent the annular workpiece 14 from vibrating up and down during rotation. Finally, power the three-phase asynchronous motor 8 and the automatic submerged arc welding machine 13, and welding can begin. This invention realizes submerged arc welding of annular workpieces, reduces the workload of manual welding, improves the welding production efficiency of workpieces, and greatly increases the first-pass yield of weld flaw detection for annular workpieces.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A welding fixture for submerged arc welding of annular workpieces, characterized in that, Includes turntable bracket, turntable base, support device, rotating device, and submerged arc welding machine support device; The turntable base supports the turntable bracket via the support device, and the turntable bracket is used to support the annular workpiece. The rotating device is used to rotate the turntable bracket. The submerged arc welding machine support device is located next to the turntable bracket and is used to support the automatic submerged arc welding machine. The automatic submerged arc welding machine is used to perform submerged arc welding on the annular workpiece rotating on the turntable bracket.

2. The submerged arc welding fixture for annular workpieces according to claim 1, characterized in that, The support device includes a connecting circular plate, a turntable rotating gear, a gear base circular plate, and a steel pipe; The connecting circular plate is fixed to the bottom center of the turntable bracket, the turntable rotating gear is fixed to the bottom of the connecting circular plate, the bottom of the steel pipe is fixedly connected to the turntable base, the top of the steel pipe is fixedly connected to the gear base circular plate, the gear base circular plate is rotatably connected to the turntable rotating gear, the rotating device has a transmission gear, and the transmission gear meshes with the turntable rotating gear.

3. The submerged arc welding fixture for annular workpieces according to claim 2, characterized in that, The rotating device includes an integrated cycloidal reducer, and the transmission gear is mounted on the output shaft of the integrated cycloidal reducer.

4. The submerged arc welding fixture for annular workpieces according to claim 2, characterized in that, The rotating device includes the transmission gear and a drive mechanism for driving the transmission gear to rotate. The drive mechanism includes an integrated cycloidal reducer or a three-phase asynchronous motor and a reduction gearbox connected to the output shaft of the three-phase asynchronous motor via a coupling.

5. The submerged arc welding fixture for annular workpieces according to claim 4, characterized in that, The rotating device also includes a motor base disposed at the bottom of the drive mechanism. The motor base is composed of angle steel, square tube or steel plate, and the motor base is welded and fixed to the turntable base and the drive mechanism.

6. The submerged arc welding fixture for annular workpieces according to claim 1, characterized in that, The submerged arc welding machine support device includes a submerged arc welding bracket and a welding machine travel track fixed to the top of the submerged arc welding bracket. The welding machine travel track cooperates with the wheels of the automatic submerged arc welding machine.

7. The submerged arc welding fixture for annular workpieces according to claim 6, characterized in that, The submerged arc welding machine support device also includes a first shim for adjusting the levelness of the submerged arc welding bracket.

8. The submerged arc welding fixture for annular workpieces according to claim 1, characterized in that, The bottom of the turntable base is provided with a second shim for adjusting the levelness of the turntable base.

9. The submerged arc welding fixture for annular workpieces according to claim 1, characterized in that, The ring-shaped workpiece is a ring-shaped spliced ​​beam, a semi-circular or circular spliced ​​component.

10. The submerged arc welding fixture for annular workpieces according to claim 1, characterized in that, The turntable support is formed by splicing together multiple I-beams, angle steels, or square tubes. A stop block or a plate is welded to the contact point between the turntable support and the annular workpiece, or the turntable support is directly welded to the annular workpiece to prevent the annular workpiece from shaking when it rotates.

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