A welding fixture for a liquid storage tank shell

Abstract

The utility model relates to a kind of welding fixture of liquid storage tank shell, including base, the first connecting plate is vertically fixedly connected on the base, the second connecting plate is horizontally slidably connected on the base, the base is fixedly installed on the first connecting plate and second connecting plate, the middle part of the base is rotatably connected with first roller, the both ends of the base are rotatably connected with adjusting arm, the one end of the adjusting arm is rotatably connected with second roller, the first roller and second roller are all in contact with the surface of liquid storage tank.The utility model is through the first roller and second roller on base to realize the clamping limit of vertical liquid storage tank, so that vertical liquid storage tank does not occur when welding deviation, to facilitate the accurate welding of pipeline, instrument passage and other equipment, and the first roller and second roller can rotate on the surface of vertical liquid storage tank, cooperate rotating platform to realize the circumferential rotation of vertical liquid storage tank, to facilitate staff to weld, without repeatedly moving.

Description

Technical Field

[0001] This utility model relates to the field of liquid storage tank processing technology, specifically a welding fixture for the shell of a liquid storage tank. Background Technology

[0002] Liquid storage tanks are specialized containers used in the industrial field for the sealed storage of liquid media. They are made of materials such as stainless steel, plastic, and fiberglass, and commonly come in vertical, horizontal, and conical structures. The tank body is generally equipped with standardized interfaces such as water inlet, reflux outlet, and disinfection outlet. The inner liner can be polished to a precision of up to Ra0.45μm, and is used in conjunction with a 0.45μm-level air respirator to ensure hygienic storage.

[0003] Currently, vertical liquid storage tanks require welding of pipes, instrument channels, and other equipment on their surface during processing. This process involves placing the vertical liquid storage tank on the ground and then manually welding it. This method can easily cause the vertical liquid storage tank to shift during welding, thus affecting the welding process. In addition, the vertical liquid storage tank is relatively large and not easy to rotate, requiring workers to move it repeatedly for welding. Utility Model Content

[0004] The purpose of this utility model is to provide a welding fixture for the shell of a liquid storage tank, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A welding fixture for fixing a liquid storage tank shell includes a base, a first connecting plate vertically fixedly connected to the base, a second connecting plate horizontally slidably connected to the base, a pedestal fixedly mounted on the first and second connecting plates, a first roller rotatably connected to the middle part of the pedestal, adjusting arms rotatably connected to both ends of the pedestal, and a second roller rotatably connected to one end of each adjusting arm. Both the first and second rollers are in contact with the surface of the liquid storage tank. A first adjusting assembly is connected between the adjusting arm and the pedestal, and a second adjusting assembly is connected between the second connecting plate and the pedestal.

[0007] Preferably, the first adjusting component includes a rotating shaft, a worm gear, and a worm. The rotating shaft is fixedly connected to the adjusting arm, and the adjusting arm is rotatably connected to the base via the rotating shaft. The worm gear is coaxially fixedly connected to the rotating shaft, and the worm is rotatably connected to the base and cooperates with the worm gear.

[0008] Preferably, the second adjusting component includes a threaded rod and a telescopic rod, one end of the threaded rod is rotatably connected to the second connecting plate, the other end of the threaded rod passes through and is threadedly connected to the base, and the telescopic rod is fixedly connected between the base and the second connecting plate.

[0009] Preferably, a connecting rod is coaxially fixedly connected between two worm gears on the same base, and a handle is coaxially fixedly connected to one end of one of the worm gears.

[0010] Preferably, the base is characterized by having a linear guide rail fixedly mounted on it, and a rotating platform rotatably connected to the slider of the linear guide rail, the rotating platform being in contact with the bottom of the storage tank.

[0011] Preferably, the first roller and the second roller are both located on the same arc, and the center of the arc where the first roller and the second roller are located always coincides with the center of the rotating platform.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model uses a first roller and a second roller on the base to clamp and limit the vertical liquid storage tank, preventing it from shifting during welding. This facilitates precise welding of pipes, instrument channels, and other equipment. Furthermore, both the first roller and the second roller can rotate on the surface of the vertical liquid storage tank. Combined with the rotating platform, this allows the vertical liquid storage tank to rotate circumferentially, enabling workers to perform welding without repeated movement. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a front structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the connection structure between the worm gear and the worm of this utility model;

[0017] Figure 4 This is a top view of the base structure of this utility model.

[0018] In the diagram: 1. Base; 2. Rotating platform; 3. Linear guide rail; 4. First connecting plate; 5. Second connecting plate; 6. Base; 7. First roller; 8. Adjusting arm; 9. Second roller; 10. Threaded rod; 11. Telescopic rod; 12. Rotating shaft; 13. Worm gear; 14. Worm; 15. Connecting rod; 16. Handle. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution:

[0021] A welding fixture for fixing a liquid storage tank shell includes a base 1, a first connecting plate 4 vertically fixedly connected to the base 1, a second connecting plate 5 horizontally slidably connected to the base 1, a base 6 fixedly mounted on the first connecting plate 4 and the second connecting plate 5, a first roller 7 rotatably connected to the middle part of the base 6, adjusting arms 8 rotatably connected to both ends of the base 6, and a second roller 9 rotatably connected to one end of the adjusting arm 8. Both the first roller 7 and the second roller 9 are in contact with the surface of the liquid storage tank. A first adjusting component is connected between the adjusting arm 8 and the base 6, and a second adjusting component is connected between the second connecting plate 5 and the base 1.

[0022] Please see Figure 1 and Figure 2 In this embodiment, the vertical liquid storage tank is placed on the base 1. Then, the second connecting plate 5 is moved closer to the vertical liquid storage tank by the second adjusting component until the first rollers 7 on both bases 6 are in contact with the side surface of the vertical liquid storage tank. Then, the adjusting arms 8 on both bases 6 are rotated by the first adjusting component, so that the adjusting arms 8 drive the second rollers 9 to contact the side surface of the vertical liquid storage tank. At this time, the vertical liquid storage tank can be fixed by the first rollers 7 and the second rollers 9. The minimum number of first rollers 7 is two, and the minimum number of second rollers 9 is four. In this embodiment, two second rollers 9 are provided on each base 6, and two bases 6 are provided on both the first connecting plate 4 and the second connecting plate 5. At this time, the vertical liquid storage tank can be fixed from both the top and bottom. Since each of the first rollers 7 and the second rollers 9 can rotate circumferentially, welding of different parts of the vertical liquid storage tank can be achieved by rotating the vertical liquid storage tank. Sliding friction will be generated between the first rollers 7 and the second rollers 9 and the vertical liquid storage tank to reduce the resistance when the vertical liquid storage tank rotates. The first rollers 7 and the second rollers 9 clamp and limit the vertical liquid storage tank on the base 1, so that the vertical liquid storage tank will not shift during welding, which is conducive to the precise welding of equipment such as pipes and instrument channels. Moreover, the first rollers 7 and the second rollers 9 can rotate on the surface of the vertical liquid storage tank, which can realize the circumferential rotation of the vertical liquid storage tank, so as to facilitate the welding work.

[0023] The first adjustment assembly includes a rotating shaft 12, a worm gear 13, and a worm 14. The rotating shaft 12 is fixedly connected to the adjustment arm 8, and the adjustment arm 8 is rotatably connected to the base 6 via the rotating shaft 12. The worm gear 13 is coaxially fixedly connected to the rotating shaft 12, and the worm 14 is rotatably connected to the base 6 and cooperates with the worm gear 13.

[0024] Please see Figure 3and Figure 4 By rotating the worm gear 14, the worm wheel 13 can be driven to rotate, which in turn drives the shaft 12 to rotate. Ultimately, the shaft 12 drives the second roller 9 to rotate via the adjusting arm 8, allowing the second roller 9 to move closer to or further away from the vertical storage tank to accommodate vertical storage tanks of different sizes. The worm gear 14 and the worm wheel 13 are self-locking to prevent accidental activation of the adjusting arm 8 from causing the worm wheel 13 to rotate. In order to drive the two worm wheels 13 to rotate when the two worm gears 14 rotate in the same direction, in this embodiment, the helical directions of the worm gears 14 are opposite.

[0025] The second adjustment assembly includes a threaded rod 10 and a telescopic rod 11. One end of the threaded rod 10 is rotatably connected to the second connecting plate 5, and the other end of the threaded rod 10 passes through and is threadedly connected to the base 1. The telescopic rod 11 is fixedly connected between the base 1 and the second connecting plate 5.

[0026] Please see Figure 1 and Figure 2 In this embodiment, the second connecting plate 5 can be driven to move horizontally on the base 1 by rotating the threaded rod 10, thereby adjusting the distance between the first connecting plate 4 and the second connecting plate 5. When the second connecting plate 5 moves, it can drive the telescopic rod 11 to extend or shorten. The telescopic rod 11 can limit the second connecting plate 5 and prevent the second connecting plate 5 from rotating synchronously with the threaded rod 10.

[0027] A connecting rod 15 is coaxially fixedly connected between two worm gears 14 on the same base 6, and a handle 16 is coaxially fixedly connected to one end of one of the worm gears 14.

[0028] Please see Figure 4 In this embodiment, the two worm gears 14 are coaxially connected by the connecting rod 15, and the two worm gears 14 can be driven to rotate in the same direction simultaneously by the handle 16, thereby driving the two worm wheels 13.

[0029] A linear guide rail 3 is fixedly installed on the base 1. A rotating platform 2 is rotatably connected to the slider of the linear guide rail 3. The rotating platform 2 is in contact with the bottom of the liquid storage tank. The first roller 7 and the second roller 9 are both on the same arc. The center of the arc where the first roller 7 and the second roller 9 are located always coincides with the center of the rotating platform 2.

[0030] Please see Figure 1 and Figure 2In this embodiment, the vertical storage tank is supported from the bottom by the rotating platform 2. Under the action of the rotating platform 2, when the vertical storage tank is rotated, the vertical storage tank can drive the rotating platform 2 to rotate synchronously. While raising the vertical storage tank, the rotation of the vertical storage tank is not affected, so as to facilitate welding of the vertical storage tank. The linear guide rail 3 enables the vertical storage tank to move horizontally on the base 1, so as to adjust the horizontal position of the vertical storage tank after it is placed on the rotating platform 2.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding fixture for fixing the shell of a liquid storage tank, characterized in that, The system includes a base (1), on which a first connecting plate (4) is vertically fixedly connected, and a second connecting plate (5) is horizontally slidably connected. A base (6) is fixedly installed on the first connecting plate (4) and the second connecting plate (5). A first roller (7) is rotatably connected to the middle part of the base (6). An adjusting arm (8) is rotatably connected to both ends of the base (6). A second roller (9) is rotatably connected to one end of the adjusting arm (8). Both the first roller (7) and the second roller (9) are in contact with the surface of the liquid storage tank. A first adjusting component is connected between the adjusting arm (8) and the base (6). A second adjusting component is connected between the second connecting plate (5) and the base (1).

2. The welding fixture for a liquid storage tank shell according to claim 1, characterized in that, The first adjustment assembly includes a rotating shaft (12), a worm gear (13), and a worm (14). The rotating shaft (12) is fixedly connected to the adjustment arm (8), and the adjustment arm (8) is rotatably connected to the base (6) via the rotating shaft (12). The worm gear (13) is coaxially fixedly connected to the rotating shaft (12), and the worm (14) is rotatably connected to the base (6) and cooperates with the worm gear (13).

3. The welding fixture for a liquid storage tank shell according to claim 1, characterized in that, The second adjustment component includes a threaded rod (10) and a telescopic rod (11). One end of the threaded rod (10) is rotatably connected to the second connecting plate (5), and the other end of the threaded rod (10) passes through and is threadedly connected to the base (1). The telescopic rod (11) is fixedly connected between the base (1) and the second connecting plate (5).

4. The welding fixture for a liquid storage tank shell according to claim 2, characterized in that, A connecting rod (15) is coaxially fixedly connected between two worms (14) on the same base (6), and a handle (16) is coaxially fixedly connected to one end of one of the worms (14).

5. The welding fixture for a liquid storage tank shell according to claim 1, characterized in that, A linear guide rail (3) is fixedly installed on the base (1), and a rotating platform (2) is rotatably connected to the slider of the linear guide rail (3). The rotating platform (2) is in contact with the bottom of the liquid storage tank.

6. The welding fixture for a liquid storage tank shell according to claim 5, characterized in that, The first roller (7) and the second roller (9) are both on the same arc, and the center of the arc on which the first roller (7) and the second roller (9) are located always coincides with the center of the rotating platform (2).

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