An inner diameter support tool for bellows welding

Abstract

The utility model relates to the technical fields of corrugated pipe welding frock, especially a kind of inner diameter support frock for corrugated pipe welding, it can be convenient to support and fix different sizes of metal corrugated pipe, improve the fixing effect of metal corrugated pipe and flange, avoid misplacement when welding, make metal corrugated pipe and flange weld more convenient, improve practicality;It includes chassis, the annular equidistance fixed connection of chassis bottom end has four groups of supporting leg, and the annular support is fixedly connected at chassis top end, the rotary connection of annular support top end has turntable, two groups of guide grooves are symmetrically set on each side wall of star type fixing frame, motor is fixedly installed at star type fixing frame top end, three groups of support plate outer side are cambered surface, and two groups of support arms are symmetrically rotatably connected in inside, the end of support arm away from support plate is rotatably connected in connecting seat, and support plate bottom end is in contact with turntable top end.

Description

Technical Field

[0001] This utility model relates to the technical field of tooling for corrugated pipe welding, and in particular to an inner diameter support tooling for corrugated pipe welding. Background Technology

[0002] Corrugated pipes mainly include metal corrugated pipes, corrugated expansion joints, corrugated heat exchange tubes, diaphragm boxes, and metal hoses. Metal corrugated pipes are mainly used to compensate for pipeline thermal deformation, reduce vibration, and absorb pipeline settlement deformation. They are widely used in petrochemical, instrumentation, aerospace, chemical, power, cement, metallurgical and other industries.

[0003] When manufacturing metal bellows, since they are mainly used to compensate for pipeline thermal deformation, damping, and absorbing pipeline settlement, their length is usually relatively short. Furthermore, flanges need to be welded to the ends of the metal bellows to facilitate subsequent connection of the metal bellows. When welding the metal bellows and flanges, a support device is first used to support and position the bellows and flanges before welding.

[0004] However, the existing support devices are inconvenient to support and fix metal bellows of different sizes during use, and the fixing effect is relatively poor. Misalignment is easy to occur during welding, and the pipes cannot be rotated after being fixed. This makes it inconvenient to weld metal bellows and flanges, and their practicality is insufficient. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an inner diameter support tool for corrugated pipe welding that can facilitate the support and fixation of metal corrugated pipes of different sizes, improve the fixing effect of metal corrugated pipes and flanges, avoid misalignment during welding, make welding of metal corrugated pipes and flanges more convenient, and improve the practicality of corrugated pipe welding.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an inner diameter support fixture for corrugated pipe welding, comprising a chassis, a support mechanism, and a pressing mechanism. Four sets of legs are fixedly connected at equal intervals in a ring at the bottom of the chassis. An annular support is fixedly connected to the top of the chassis, and a turntable is rotatably connected to the top of the annular support. The support mechanism includes a star-shaped fixing frame and three sets of support plates. The star-shaped fixing frame is fixedly connected to the center of the top of the turntable. Two sets of guide grooves are symmetrically provided on each side wall of the star-shaped fixing frame. A motor is fixedly installed at the top of the star-shaped fixing frame. A bidirectional threaded rod is rotatably installed between the top of the turntable and the top of the star-shaped fixing frame, and the top of the bidirectional threaded rod is fixedly connected to the output end of the motor. Two sets of star-shaped transmission discs are symmetrically threaded onto the threaded rod. The two sets of star-shaped transmission discs are symmetrically slidably mounted on the star-shaped fixed frame through cooperation with the guide groove. Three sets of connecting seats are fixedly connected to the outer side of each of the two sets of star-shaped transmission discs. The outer side of the three sets of support plates is arc-shaped, and the inner side of each set of support plates is symmetrically rotatably connected to two sets of support arms. The end of the support arm away from the support plate is rotatably connected to the connecting seat. The bottom end of the support plate contacts the top end of the turntable. The pressing mechanism includes three sets of cylinders. The top of the outer side of each of the three sets of support plates is fixedly connected to a fixed plate. The three sets of cylinders are respectively fixedly mounted on the three sets of fixed plates. The output end of the cylinder passes through the fixed plate. The output end of each of the three sets of cylinders is fixedly connected to a pressure plate. The inner side of the pressure plate contacts the outer side of the support plate.

[0008] Preferably, four sets of handles are fixedly connected in a ring at equal intervals on the outer wall of the turntable, and each of the four sets of handles is fixedly fitted with an anti-slip handle sleeve.

[0009] Preferably, the bottom ends of the three sets of pressure plates are all fixedly connected with fastening rubber pads.

[0010] Preferably, all four sets of support legs are fixedly connected to anti-slip rubber pads at their bottom ends.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: During use, the spacing of the support plates can be adjusted by starting the motor. The three sets of support plates can support metal bellows of different sizes from the inside. The three sets of pressure plates further fix the metal bellows and flanges, improving the fixing effect. During welding, the turntable can be manually rotated to make the turntable rotate together with the metal bellows and flanges, thereby realizing ring welding. Thus, when welding metal bellows and flanges, it is convenient to support and fix metal bellows of different sizes, improving the fixing effect of metal bellows and flanges, avoiding misalignment during welding, and enabling ring welding by rotation, making the welding of metal bellows and flanges more convenient and improving practicality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0013] Figure 2This is a partial isometric structural schematic diagram of this utility model;

[0014] Figure 3 This is an isometric structural diagram of the star-shaped fixing bracket in this utility model;

[0015] Figure 4 This is an isometric structural diagram of the connection between the star-shaped transmission disc and the connecting seat in this utility model;

[0016] Figure 5 This is an isometric structural diagram of the metal bellows and flange support and fixation of this utility model;

[0017] Figure 6 This is a cross-sectional structural diagram of the support plate and pressure plate fixing the metal bellows and flange in this utility model.

[0018] The following are labels in the attached diagram: 1. Chassis; 2. Support leg; 3. Annular support; 4. Turntable; 5. Star-shaped fixing frame; 6. Guide groove; 7. Motor; 8. Bidirectional threaded rod; 9. Star-shaped transmission disc; 10. Connecting seat; 11. Support plate; 12. Support arm; 13. Fixing plate; 14. Cylinder; 15. Pressure plate; 16. Handle; 17. Anti-slip grip; 18. Fastening rubber pad; 19. Anti-slip rubber pad. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0020] Example

[0021] Please see Figures 1-6This utility model discloses an inner diameter support fixture for corrugated pipe welding, comprising a base 1, a star-shaped fixing frame 5, three sets of support plates 11, and three sets of cylinders 14. Four sets of support legs 2 are fixedly connected at equal intervals in a ring at the bottom end of the base 1. An annular support 3 is fixedly connected to the top of the base 1, and a turntable 4 is rotatably connected to the top of the annular support 3. The star-shaped fixing frame 5 is fixedly connected to the center of the top of the turntable 4. Two sets of guide grooves 6 are symmetrically provided on each side wall of the star-shaped fixing frame 5. A motor 7 is fixedly installed at the top of the star-shaped fixing frame 5. The top of the turntable 4 and the top of the star-shaped fixing frame 5 are connected... A bidirectional threaded rod 8 is rotatably mounted between the two sides, and the top end of the bidirectional threaded rod 8 is fixedly connected to the output end of the motor 7. Two sets of star-shaped transmission discs 9 are symmetrically threaded on the bidirectional threaded rod 8. The two sets of star-shaped transmission discs 9 are symmetrically slidably mounted on the star-shaped fixing frame 5 through cooperation with the guide groove 6. Three sets of connecting seats 10 are fixedly connected to the outer side of each of the two sets of star-shaped transmission discs 9. The outer side of the three sets of support plates 11 is arc-shaped, and the inner side is symmetrically rotatably connected to two sets of support arms 12. The end of the support arm 12 away from the support plate 11 is rotatably connected to the connecting seat 10, supporting... The bottom end of plate 11 contacts the top end of turntable 4. Each of the three sets of support plates 11 has a fixed plate 13 fixedly connected to its outer top. Three sets of cylinders 14 are respectively fixedly mounted on the three sets of fixed plates 13. The output end of each cylinder 14 passes through the fixed plate 13, and each of the three sets of cylinder 14 has a fixed pressure plate 15 fixedly connected to its output end. The inner side of the pressure plate 15 contacts the outer side of the support plate 11. In use, the spacing of the support plates 11 can be adjusted by starting the motor 7. The three sets of support plates 11 can support metal corrugated pipes of different sizes from the inside, and the three sets of pressure plates 15... To further secure the metal bellows and flange, the fixing effect is improved. During welding, the turntable 4 can be manually rotated to rotate the metal bellows and flange together, thus achieving circumferential welding. This facilitates the support and fixing of metal bellows of different sizes during welding, improving the fixing effect and preventing misalignment during welding. The ability to perform circumferential welding by rotation makes welding the metal bellows and flange more convenient and improves practicality.

[0022] Four sets of handles 16 are fixedly connected in a ring at equal intervals on the outer wall of the turntable 4. Each set of handles 16 is fixedly fitted with an anti-slip grip 17. By setting the handles 16, the turntable 4 can be rotated by holding the handles 16. The anti-slip grip 17 prevents the hand from slipping when rotating the turntable 4, thus making it more convenient to rotate the turntable 4.

[0023] The bottom ends of the three sets of pressure plates 15 are all fixedly connected with fastening rubber pads 18; by setting fastening rubber pads 18, the pressure plates 15 can hold the metal bellows more tightly and securely.

[0024] The bottom ends of all four sets of support legs 2 are fixedly connected with anti-slip rubber pads 19; by setting anti-slip rubber pads 19, the device can be prevented from slipping on the ground when placed.

[0025] This utility model discloses an inner diameter support fixture for corrugated pipe welding. Its working principle is as follows: When welding a metal corrugated pipe and a flange, first, the flange is placed around three sets of support plates 11, positioning it on the turntable 4. Then, the metal corrugated pipe is placed around the support plates 11, with the bottom opening of the pipe abutting against the top of the flange. The flange and the inner diameter of the metal corrugated pipe are the same. The height of the pressure plate 15 is higher than the top of the metal corrugated pipe. By starting the motor 7, the support plates 11 can be moved outwards, allowing the three sets of support plates 11 to... The internal support holds the metal bellows and flange, which are then supported and fixed from the inside by three sets of support plates 11. By activating the cylinder 14, the cylinder 14 pushes the pressure plate 15 downward, so that the pressure plate 15 presses appropriately on the top of the metal bellows. Under the pressure of the pressure plate 15, the metal bellows and flange are further fixed. By manually rotating the turntable 4 by holding the handle 16, the turntable 4 can rotate together with the metal bellows and flange, so that the connection between the metal bellows and the flange can be circumferentially welded.

[0026] The inner diameter support fixture for corrugated pipe welding of this utility model has common mechanical installation, connection or setting methods, and can be implemented as long as it can achieve the beneficial effect. The motor 7 and cylinder 14 of the inner diameter support fixture for corrugated pipe welding of this utility model are purchased from the market. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual.

[0027] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An inner diameter support tool for bellows welding, characterized by, Includes chassis (1), support mechanism and pressure holding mechanism; The chassis (1) has four sets of support legs (2) fixedly connected at equal intervals in a ring at the bottom end of the chassis (1), and a ring support (3) is fixedly connected to the top end of the chassis (1). A turntable (4) is rotatably connected to the top end of the ring support (3). The support mechanism includes a star-shaped fixing frame (5) and three sets of support plates (11). The star-shaped fixing frame (5) is fixedly connected to the center of the top of the turntable (4). Two sets of guide grooves (6) are symmetrically opened on each side wall of the star-shaped fixing frame (5). A motor (7) is fixedly installed on the top of the star-shaped fixing frame (5). A bidirectional threaded rod (8) is rotatably installed between the top of the turntable (4) and the top of the star-shaped fixing frame (5). The top of the bidirectional threaded rod (8) is fixedly connected to the output end of the motor (7). The screw-mounted sleeve is equipped with two sets of star-shaped transmission discs (9). The two sets of star-shaped transmission discs (9) are symmetrically slidably mounted on the star-shaped fixed frame (5) through cooperation with the guide groove (6). Three sets of connecting seats (10) are fixedly connected to the outer side of each of the two sets of star-shaped transmission discs (9). The outer side of the three sets of support plates (11) is arc-shaped, and the inner side is symmetrically rotatably connected to two sets of support arms (12). The end of the support arm (12) away from the support plate (11) is rotatably connected to the connecting seat (10). The bottom end of the support plate (11) is in contact with the top end of the turntable (4). The pressing mechanism includes three sets of cylinders (14) for pressing the metal bellows.

2. An inner diameter support tool for welding a bellows as defined in claim 1, characterized in that The top outer sides of the three sets of support plates (11) are all fixedly connected to a fixing plate (13). The three sets of cylinders (14) are respectively fixedly installed on the three sets of fixing plates (13). The output end of the cylinder (14) passes through the fixing plate (13). The output end of the three sets of cylinders (14) is fixedly connected to a pressure plate (15). The inner side of the pressure plate (15) contacts the outer side of the support plate (11).

3. An inner diameter support tool for welding a bellows as defined in claim 2, characterized in that The turntable (4) has four sets of handles (16) fixedly connected in a ring at equal intervals on its outer wall, and each set of handles (16) is fixedly fitted with an anti-slip handle sleeve (17).

4. An inner diameter support tool for welding a bellows as defined in claim 3, characterized in that The bottom ends of the three sets of pressure plates (15) are all fixedly connected with fastening rubber pads (18).

5. An inner diameter support tool for welding a bellows as defined in claim 4, characterized in that The bottom ends of the four sets of outriggers (2) are all fixedly connected with anti-slip rubber pads (19).

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