An eccentric reducer butt joint submerged arc automatic welding auxiliary tool

Abstract

The utility model discloses an eccentricity reducing pipe joint butt joint submerged arc automatic welding auxiliary tool relates to eccentricity reducing pipe joint welding auxiliary tool technical field, including adjustable clamping body mechanism and fixed clamping body mechanism, adjustable clamping body mechanism includes ring, top block and support piece, and one end of support piece penetrates ring, and is connected with ring screw thread, and the other end of support piece is embedded top block, and eccentricity reducing pipe joint is fixed in ring through top block and support piece. The utility model can through adjustable clamping body mechanism and hold eccentricity reducing pipe joint, and the eccentricity reducing pipe joint is adjusted to the concentric position with the other pipe joint of fixed clamping body mechanism clamping, and adjustable clamping body mechanism can be applicable to the eccentricity reducing pipe joint of different diameters, and the equipment cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary tooling technology for welding eccentric reducers, specifically an auxiliary tooling for automatic submerged arc welding of eccentric reducers. Background Technology

[0002] Currently, the mainstream boiler systems in China mostly use submerged arc welding on roller frames for butt welding of large-diameter, thick-walled pipes (Ф219 and above). However, it is difficult to achieve direct submerged arc welding on roller frames for butt welding of eccentric reducers (Ф219 and above). The solutions are: one is to use high-precision CNC advanced equipment such as robotic welding, but for manufacturers that produce such eccentric reducers on a small scale, the cost of purchasing new advanced equipment is too high and uneconomical; the other is to use conventional manual welding methods, which have many disadvantages such as low production efficiency and poor weld quality. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an auxiliary tooling for automatic submerged arc welding of eccentric reducers. The eccentric reducer is clamped by an adjustable clamping body mechanism, which makes it easy to adjust the eccentric reducer to a position concentric with other pipes clamped by the fixed clamping body mechanism. At the same time, the adjustable clamping body mechanism can be applied to eccentric reducers of different diameters, reducing equipment costs.

[0004] The purpose of this utility model is achieved through the following technical solution: an auxiliary tooling for automatic submerged arc welding of eccentric reducer fittings, the tooling including an adjustable clamping body mechanism and a fixed clamping body mechanism, the adjustable clamping body mechanism including a ring, a top block and a support member, one end of the support member passing through the ring and threadedly connected to the ring, the other end of the support member being embedded in the top block, the eccentric reducer fitting being fixed in the ring by the top block and the support member.

[0005] The support components include a horizontal support component that restricts the left-right movement of the eccentric reducer, a vertical support component that restricts the up-down movement of the eccentric reducer, and an oblique support component that restricts the diagonal movement of the eccentric reducer. The top block includes a horizontal top block and a vertical top block. One end of the horizontal support component passes horizontally through the ring and is threadedly connected to the ring. The other end of the horizontal support component is embedded in the horizontal top block. One end of the vertical support component passes vertically through the ring and is threadedly connected to the ring. The other end of the vertical support component is embedded in the vertical top block. One end of the oblique support component passes obliquely through the ring and is threadedly connected to the ring. The other end of the oblique support component abuts against the eccentric reducer.

[0006] The support member can be a threaded part such as a screw or bolt.

[0007] The fixed clamping mechanism includes an upper semi-circular arc plate and a lower semi-circular arc plate. An upper connecting plate is provided on the bottom surface of the upper semi-circular arc plate, and a lower connecting plate is provided on the top surface of the lower semi-circular arc plate. The upper connecting plate and the lower connecting plate are fixedly connected.

[0008] The upper connecting plate and the lower connecting plate are fixedly connected by bolts, which facilitates disassembly.

[0009] The beneficial effects of this utility model are: 1. This utility model uses an adjustable clamping body mechanism to clamp eccentric reducers, which facilitates spot welding of eccentric reducers with other pipe fittings clamped by the fixed clamping body mechanism. At the same time, the adjustable clamping body mechanism can be used for eccentric reducers of different diameters, reducing equipment costs; it also eliminates the need for manual welding, improving production efficiency and ensuring welding quality.

[0010] 2. This utility model uses the combination of an adjustable clamping body mechanism and a fixed clamping body mechanism to clamp the small-diameter pipe fitting with the fixed clamping body mechanism and the large-diameter pipe fitting with the adjustable clamping body mechanism. The large-diameter pipe fitting and the small-diameter pipe fitting are adjusted to be concentric pipe fittings. Then, the large-diameter pipe fitting and the small-diameter pipe fitting are spot welded together. After spot welding, the adjustable clamping body mechanism and the large-diameter pipe fitting, the fixed clamping body mechanism and the small-diameter pipe fitting are placed on the roller frame to complete the submerged arc automatic welding. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the adjustable clamping mechanism of this utility model; Figure 2 A schematic diagram of the structure of the fixed clamping body mechanism; In the diagram: 1-Upper semicircular plate, 2-Lower semicircular plate, 4-Bolt connection pair, 5-Ring sleeve, 6-Horizontal top block, 7-Vertical top block, 8-Supporting component, 9-Upper connecting plate, 10-Lower connecting plate. Detailed Implementation

[0012] 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, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] In one embodiment of this application: like Figure 1 As shown, an auxiliary tooling for automatic submerged arc welding of eccentric reducer fittings is provided. The tooling includes an adjustable clamping mechanism and a fixed clamping mechanism. The adjustable clamping mechanism includes a ring 5, a top block, and a support member 8. One end of the support member 8 passes through the ring 5 and is threadedly connected to the ring 5. The other end of the support member 8 is embedded in the top block. The eccentric reducer fitting is fixed in the ring 5 by the top block and the support member 8. The support member 8 is made of hexagon socket head cap screw. The hexagon socket head cap screw passes through the outside of the ring 5 to the inside of the ring 5 and is then inserted into the top block (i.e., the head of the hexagon socket head cap screw with a hexagonal groove is on the outside of the ring 5, and the threaded head is inserted into the top block). The operator pre-tightens the hexagonal screws of the adjustable clamping mechanism, leaving a certain amount of play. Then, the ring 5 is hoisted and installed onto the eccentric reducer, so that the eccentric reducer is placed inside the ring 5. The hexagonal wrench is used to tighten the hexagonal screws, which are screwed inward toward the ring 5. The hexagonal screws push against the top block and press against the eccentric reducer, thus clamping the eccentric reducer inside the ring 5 and fixing its position. If multiple hexagonal screws and multiple top blocks are needed to tighten the eccentric reducer from all directions, the hexagonal screws are tightened first at the bottom of the ring 5, then at the left and right sides of the ring 5. After tightening the eccentric reducer, it can be adjusted to a position concentric with the other pipe fittings clamped by the fixed clamping mechanism. Then, the concentric eccentric reducer is spot-welded with the other pipe fittings. The two spot-welded pipe fittings, the adjustable clamping mechanism, and the fixed clamping mechanism are then hoisted onto the roller frame of the submerged arc welding machine's operating table. The roller frame is activated, and the submerged arc welding machine is operated to automatically weld the butt joints between the eccentric reducer and the other pipe fittings. Multiple hexagonal socket head cap screws of different lengths, multiple top blocks of different sizes, and multiple rings of different sizes can be prepared to accommodate eccentric reducers of different specifications or eccentricities, improving the versatility of this adjustable clamping mechanism.

[0015] Support 8 can also be other types of screws or bolts.

[0016] The top block can be designed with special anti-slip features or measures to increase friction.

[0017] In the second embodiment of this application: Based on the previous embodiment, this embodiment improves the support member 8. The support member 8 includes a horizontal support member, a vertical support member, and an oblique support member. The top block includes a horizontal top block 6 and a vertical top block 7. One end of the horizontal support member passes horizontally through the ring 5 and is threadedly connected to the ring 5. The other end of the horizontal support member is embedded in the horizontal top block 6. One end of the vertical support member passes vertically through the ring 5 and is threadedly connected to the ring 5. The other end of the vertical support member is embedded in the vertical top block 7. One end of the oblique support member passes obliquely through the ring 5 and is threadedly connected to the ring 5. The other end of the oblique support member abuts against the eccentric reducer. The horizontal support member includes a left horizontal support member and a right horizontal support member. The horizontal top block 6 includes a left horizontal top block and a right horizontal top block, as shown below. Figure 1 As shown, the left lateral support passes through the left side of the ring 5 from the right and is inserted into the left lateral top block. The right lateral support passes through the right side of the ring 5 from the left and is inserted into the right lateral top block. Tightening the left and right lateral supports secures the left and right sides of the eccentric reducer, restricting its lateral movement. Meanwhile, the vertical support passes through the bottom of the ring 5 from the top and is inserted into the vertical top block 7. Tightening the vertical support secures the lower part of the eccentric reducer. The upper edge of the eccentric reducer abuts against the inner top of the ring 5, thereby restricting the vertical movement of the eccentric reducer. The inclined support includes a left inclined support and a right inclined support. The left inclined support passes through from the lower left side of the ring 5 to the upper right and abuts against the lower left side of the eccentric reducer. The right inclined support passes through from the lower right side of the ring 5 to the upper left and abuts against the lower right side of the eccentric reducer, thereby further restricting the position of the eccentric reducer.

[0018] In the third embodiment of this application: Based on the first or second embodiment, this embodiment improves the fixing clamping mechanism, such as... Figure 2As shown, the fixing clamping mechanism includes an upper semi-circular arc plate 1 and a lower semi-circular arc plate 2. An upper connecting plate 9 is welded to each of the two bottom surfaces of the upper semi-circular arc plate 1, and a lower connecting plate 10 is welded to each of the two top surfaces of the lower semi-circular arc plate 2. The upper connecting plate 9 on the left bottom surface of the upper semi-circular arc plate 1 and the lower connecting plate 10 on the left top surface of the lower semi-circular arc plate 2 are fixedly connected by a bolt connection pair 4. Similarly, the upper connecting plate 9 on the right bottom surface of the upper semi-circular arc plate 1 and the lower connecting plate 10 on the right top surface of the lower semi-circular arc plate 2 are also fixedly connected by a bolt connection pair 4. The arc radius R of the upper semi-circular arc plate 1 and the lower semi-circular arc plate 2 matches the diameter of the pipe fitting. The pipe fitting is placed inside the upper semi-circular arc plate 1 and the lower semi-circular arc plate 2, and the upper semi-circular arc plate 1 and the lower semi-circular arc plate 2 are connected by the locking bolt connection pair 4 to clamp and fix the pipe fitting. Multiple sets of upper semi-circular arc plates 1 and lower semi-circular arc plates 2 with different arc R sizes can be designed. By disassembling the bolt connection pair 4 and replacing the upper semi-circular arc plates 1 and lower semi-circular arc plates 2 with different arc R sizes, pipe fittings of different specifications and diameters can be clamped and fixed. This not only ensures firm clamping but also improves the versatility of this fixing and clamping mechanism.

[0019] The arc surfaces of the upper semi-circular plate 1 and the lower semi-circular plate 2 can be specially designed for anti-slip or have measures to increase friction.

[0020] The outer diameter of the fixed clamping mechanism is the same as that of the adjustable clamping mechanism. The fixed clamping mechanism can be used for pipe fittings with small diameters at the ends, while the adjustable clamping mechanism can be used for pipe fittings with large diameters at the ends. Using them together improves production efficiency. When used together, the large-diameter pipe fitting held by the adjustable clamping mechanism can be spot-welded to the small-diameter pipe fitting held by the fixed clamping mechanism. Then, both the fixed and adjustable clamping mechanisms are placed on roller frames (the roller frames for the fixed and adjustable clamping mechanisms must be on the same horizontal plane), ensuring that both are supported on their respective roller frames. This enables automatic submerged arc welding of eccentric reducing pipe fittings.

[0021] The above description is merely an embodiment of this utility model. It should be understood that this utility model is not limited to the form disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. An auxiliary tooling for automatic submerged arc welding of eccentric reducing pipe fittings, characterized in that: It includes an adjustable clamping body mechanism and a fixed clamping body mechanism. The adjustable clamping body mechanism includes a ring sleeve (5), a top block and a support member (8). One end of the support member (8) passes through the ring sleeve (5) and is threadedly connected to the ring sleeve (5). The other end of the support member (8) is embedded in the top block. The eccentric reducer is fixed in the ring sleeve (5) by the top block and the support member (8).

2. The auxiliary tooling for automatic submerged arc welding of eccentric reducing pipe fittings according to claim 1, characterized in that: The support member (8) includes a horizontal support member, a vertical support member and an oblique support member. The top block includes a horizontal top block (6) and a vertical top block (7). One end of the horizontal support member passes horizontally through the ring sleeve (5) and is threadedly connected to the ring sleeve (5). The other end of the horizontal support member is embedded in the horizontal top block (6). One end of the vertical support member passes vertically through the ring sleeve (5) and is threadedly connected to the ring sleeve (5). The other end of the vertical support member is embedded in the vertical top block (7). One end of the oblique support member passes obliquely through the ring sleeve (5) and is threadedly connected to the ring sleeve (5). The other end of the oblique support member abuts against the eccentric reducer.

3. The auxiliary tooling for automatic submerged arc welding of eccentric reducing pipe fittings according to claim 1, characterized in that: The support member (8) is a screw or bolt.

4. The auxiliary tooling for automatic submerged arc welding of eccentric reducing pipe fittings according to claim 3, characterized in that: The support member (8) can be an internal hex screw.

5. An auxiliary tooling for automatic submerged arc welding of eccentric reducing pipe fittings according to any one of claims 1-4, characterized in that: The fixed clamping body mechanism includes an upper semi-circular arc plate (1) and a lower semi-circular arc plate (2). The bottom surface of the upper semi-circular arc plate (1) is provided with an upper connecting plate (9), and the top surface of the lower semi-circular arc plate (2) is provided with a lower connecting plate (10). The upper connecting plate (9) and the lower connecting plate (10) are fixedly connected.

6. The auxiliary tooling for automatic submerged arc welding of eccentric reducer pipe fittings according to claim 5, characterized in that: The upper connecting plate (9) and the lower connecting plate (10) are fixedly connected by bolts (4).

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