Polygonal welding device for tank body

Abstract

The polygonal welding device for the tank comprises a base, a rotating mechanism, a rotating shaft and a polygonal welding seat, the fixed end of the rotating mechanism is arranged on the base, the rotating shaft is rotationally installed on the base, the polygonal welding seat is horizontally arranged and connected with the rotating shaft, and the working end of the rotating mechanism drives the rotating shaft to rotate in the axial direction; the rotating mechanism comprises oil cylinders, a connecting rod, a ratchet wheel, a pushing pawl and an anti-retreating pawl, the at least one oil cylinder is horizontally arranged, the fixed end of the oil cylinder is hinged to the base, the two ends of the connecting rod are rotationally connected with the working end of the oil cylinder and the rotating shaft respectively, the ratchet wheel is horizontally installed on the rotating shaft, and the pushing pawl is rotationally installed on the connecting rod through a torsional spring and matched with the ratchet wheel; the anti-retreating pawl is rotationally installed on the base through a torsional spring and matched with the ratchet wheel. The polygonal welding seat of the device can finish the assembly and welding of the polygonal tank body; firstly, the polygonal tank body has high identifiability; and secondly, the device has a dividing and angle-dividing function, so that the assembly and welding error of the tank body is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of tank welding equipment, and in particular to a polygonal welding device for tanks. Background Technology

[0002] There are generally two ways to prepare tanks. One is to roll the cylinder into shape, which has fewer welds and is quick to form. It is suitable for tanks with high sealing requirements and small volume. The other is to weld multiple plates together, which has more welds and takes longer to process. It is more suitable for tanks with special properties (such as thermal break insulation, because its interlayer needs to be filled with thermal insulation material) and large volume.

[0003] In the manufacturing process of multi-plate welded tanks, the tank frame is typically assembled first using a mold (model) on the welding table. Then, multiple steel plates are welded sequentially onto the frame to form a cylindrical tank. Generally, both the tank and the mold on the welding table are circular in shape. This leads to the following issues in tank production: firstly, the manufactured tanks are all circular, resulting in low market recognizability; secondly, neither the tank nor the welding table has a function to define angles, leading to poor uniformity of the horizontal and vertical ribs in the frame and significant errors in the alignment of the welded steel plates. Utility Model Content

[0004] The purpose of this utility model is to provide a polygonal welding device for tanks, in order to solve the problems of existing welded tanks being circular, which have low recognizability, lack of angle-dividing function, poor uniformity of horizontal and vertical ribs in the tank frame, and large errors in the alignment of welding between steel plates.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A polygonal welding device for tank bodies includes a base, a rotating mechanism, a rotating shaft, and a polygonal welding seat. The fixed end of the rotating mechanism is disposed on the base, the rotating shaft is rotatably mounted on the base, and the polygonal welding seat is horizontally disposed and connected to the rotating shaft. The working end of the rotating mechanism drives the rotating shaft to rotate axially.

[0007] The rotating mechanism includes a hydraulic cylinder, a connecting rod, a ratchet, a push pawl, and an anti-reverse pawl. At least one of the hydraulic cylinders is horizontally arranged and its fixed end is hinged to the base. The two ends of the connecting rod are respectively rotatably connected to the working end of the hydraulic cylinder and the rotating shaft. The ratchet is horizontally mounted on the rotating shaft. The push pawl is rotatably mounted on the connecting rod via a torsion spring and is adapted to the ratchet. The anti-reverse pawl is rotatably mounted on the base via a torsion spring and is adapted to the ratchet.

[0008] A further technical solution is: multiple connecting plates are arranged along the axial direction of the rotating shaft, and the polygonal welding seat is horizontally mounted on the connecting plates.

[0009] A further technical solution is that a flange is provided on the polygonal welding seat, and the flange is adapted to the connecting plate.

[0010] A further technical solution is: a hanging frame is provided on one side of the base, and a pulley system is provided on the top of the hanging frame.

[0011] A further technical solution is that steps are provided on the hanging frame.

[0012] A further technical solution is that a pressure frame is provided at the top of the rotating shaft.

[0013] A further technical solution is that the cylinder, the connecting rod, and the propulsion pawl on the rotating mechanism are in two sets, and one set of the connecting rods is provided with a synchronization detection block for the other set of the connecting rods.

[0014] A further technical solution is that the polygonal welding seat has the same shape as the cross-section of the tank.

[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0016] This utility model proposes a polygonal welding device for tanks. The polygonal welding seat of this device can complete the assembly welding of polygonal tanks. First, polygonal tanks are highly identifiable. Second, both the polygonal tank and the polygonal welding seat have the function of dividing and separating angles. That is, a circle can be divided into multiple angles. The assembly welding of the tank frame and the welding of the steel plate in each angle area can be distinguished and referenced by the boundary, thereby reducing the assembly welding error of the tank.

[0017] In addition, the device also has a rotating mechanism, which allows it to rotate and facilitates welding work. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a polygonal welding device for tanks in the welding working state.

[0019] Figure 2 This is a schematic diagram of the structure of a polygonal welding device for tanks under non-welding working conditions according to this utility model.

[0020] Figure 3 This utility model Figure 2 A schematic diagram of the rotating mechanism.

[0021] Figure 4 This utility model Figure 3 A structural diagram from another perspective.

[0022] Figure 5 This utility model Figure 2 Another structural diagram.

[0023] Reference numerals in the attached drawings: 1. Base; 2. Rotating mechanism; 3. Rotating shaft; 4. Polygonal welded seat; 5. Hydraulic cylinder; 6. Connecting rod; 7. Ratchet; 8. Propulsion pawl; 9. Anti-reverse pawl; 10. Connecting plate; 11. Flange; 12. Lifting side frame; 13. Pulley block; 14. Pulley block; 15. Synchronous detection block. Detailed Implementation

[0024] 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, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] 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.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Example 1:

[0031] This implementation example Figure 2 , Figure 3 and Figure 4 As shown, a polygonal welding device for tank bodies includes a base 1, a rotating mechanism 2, a rotating shaft 3, and a polygonal welding seat 4. The fixed end of the rotating mechanism 2 is disposed on the base 1, the rotating shaft 3 is rotatably mounted on the base 1, and the polygonal welding seat 4 is horizontally disposed and connected to the rotating shaft 3. The working end of the rotating mechanism 2 drives the rotating shaft 3 to rotate axially. The rotating mechanism 2 includes a hydraulic cylinder 5, a connecting rod 6, a ratchet 7, a push pawl 8, and an anti-reverse pawl 9. At least one hydraulic cylinder 5 is horizontally disposed and its fixed end is hinged to the base 1. The two ends of the connecting rod 6 are rotatably connected to the working end of the hydraulic cylinder 5 and the rotating shaft 3, respectively. The ratchet 7 is horizontally mounted on the rotating shaft 3. The push pawl 8 is rotatably mounted on the connecting rod 6 via a torsion spring and is adapted to the ratchet 7. The anti-reverse pawl 9 is rotatably mounted on the base 1 via a torsion spring and is adapted to the ratchet 7.

[0032] The tank's frame is laid out and welded along the polygonal shape of the polygonal welding seat 4. The welding sequence is from bottom to top and is carried out sequentially according to the division of the polygonal welding seat 4 itself. That is, one side of the polygonal welding seat 4 is one area, and multiple sides are divided into multiple welding work areas corresponding to the number of sides. The frame is welded separately in each area, and the steel plates for each area are installed separately. In this way, the welding work within a circle is distinguished by the division and each area boundary is used as a reference, which reduces errors and ensures the welding quality of the tank.

[0033] The working principle of this welding device is as follows: Figure 1 As shown, the bottom-layer frame cross ribs are first connected and secured to the polygonal welding seat 4 with bolts. Then, they are welded sequentially from bottom to top to form the frame. When forming the polygonal frame, the corner lines of the polygonal welding seat 4 are used as a reference in the vertical direction to prevent frame deformation during welding. Similarly, when welding steel plates onto the frame (in sections), the corner lines are also used as a reference to prevent large assembly errors in the steel plates. Whether welding the frame or the steel plates, the rotating mechanism 2 can drive the rotating shaft 3 to rotate, achieving a welding mode where the frame moves but the worker remains stationary, facilitating the work.

[0034] The rotating mechanism 2 operates as follows: The hydraulic cylinder 5 extends and retracts under the drive of an external hydraulic system. During extension, the connecting rod 6 rotates around the shaft 3, causing the push pawl 8 on the connecting rod 6 to rotate along with the ratchet 7. The shaft 3 also rotates along with the ratchet 7, and the polygonal welding seat 4 also rotates with the shaft 3. Then, the hydraulic cylinder 5 retracts, the connecting rod 6 rotates back, and the ratchet 7 does not rotate back due to the anti-reverse pawl 9. The push pawl 8 is also not obstructed by the ratchet 7, preparing for the next extension of the hydraulic cylinder 5 to drive the shaft 3 to rotate. The extension and retraction of the hydraulic cylinder 5 drives the shaft 3 to rotate continuously in one direction.

[0035] Preferably, a plurality of connecting plates 10 are provided on the rotating shaft 3 along its axial direction, and a polygonal welding seat 4 is horizontally installed on the connecting plates 10.

[0036] Multiple connecting plates 10 can be evenly distributed according to the height of the tank, so that the height of the polygonal welding seat 4 can be adapted to the height of the tank. At the same time, it should be noted that the rotating mechanism 2 should also be adjusted accordingly.

[0037] Preferably, a flange 11 is provided on the polygonal welding seat 4, and the flange 11 is adapted to the connecting plate 10.

[0038] Flange 11 facilitates the installation and replacement of connecting plate 10.

[0039] Example 2:

[0040] Based on the above embodiments, this embodiment shows that a hanging side frame 12 is provided on one side of the base 1, and a pulley group 13 is provided on the top of the hanging side frame 12.

[0041] When the tank is high, the upper frame or steel plate can be lifted with less effort using the lifting side frame 12 and pulley block 13, which is equipped with steel wire rope.

[0042] Preferably, the hanging side frame 12 is provided with steps.

[0043] The stairs make it easier for workers to climb and facilitate their work.

[0044] Preferably, such as Figure 5 As shown, a pressure frame 14 is provided on the top of the rotating shaft 3.

[0045] The pressure frame 14 can press down on the top of the skeleton (tank) with its own weight to prevent it from shaking.

[0046] Preferably, the cylinder 5, connecting rod 6 and push pawl 8 on the rotating mechanism 2 are in two sets, and one set of connecting rod 6 is provided with a synchronization detection block 15 for the other set of connecting rod 6.

[0047] The synchronous detection block 15 can ensure that the two sets of hydraulic cylinders 5 work synchronously, the rotating shaft 3 is subjected to uniform force and rotates stably. There are two hydraulic cylinders 5, which can make the rotating shaft 3 be subjected to uniform force, and the force borne by a single hydraulic cylinder 5 is relatively small.

[0048] Preferably, the polygonal welding seat 4 has the same shape as the cross-section of the tank.

[0049] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A polygonal welding device for tank bodies, characterized in that: The device includes a base (1), a rotating mechanism (2), a rotating shaft (3), and a polygonal welding seat (4). The fixed end of the rotating mechanism (2) is disposed on the base (1). The rotating shaft (3) is rotatably mounted on the base (1). The polygonal welding seat (4) is horizontally disposed and connected to the rotating shaft (3). The working end of the rotating mechanism (2) drives the rotating shaft (3) to rotate axially. The rotating mechanism (2) includes a hydraulic cylinder (5), a connecting rod (6), a ratchet (7), a push pawl (8), and an anti-reverse pawl (9). At least one of the hydraulic cylinders (5) is horizontally arranged and its fixed end is hinged to the base (1). The two ends of the connecting rod (6) are rotatably connected to the working end of the hydraulic cylinder (5) and the rotating shaft (3), respectively. The ratchet (7) is horizontally mounted on the rotating shaft (3). The push pawl (8) is rotatably mounted on the connecting rod (6) through a torsion spring and is adapted to the ratchet (7). The anti-reverse pawl (9) is rotatably mounted on the base (1) through a torsion spring and is adapted to the ratchet (7).

2. The polygonal welding device for tank bodies according to claim 1, characterized in that: Multiple connecting plates (10) are provided along the axial direction of the rotating shaft (3), and the polygonal welding seat (4) is horizontally installed on the connecting plate (10).

3. The polygonal welding device for tank bodies according to claim 2, characterized in that: A flange (11) is provided on the polygonal welding seat (4), and the flange (11) is adapted to the connecting plate (10).

4. The polygonal welding device for tank bodies according to claim 1, characterized in that: A hanging frame (12) is provided on one side of the base (1), and a pulley block (13) is provided on the top of the hanging frame (12).

5. The polygonal welding device for tank bodies according to claim 4, characterized in that: The hanging frame (12) is equipped with steps.

6. The polygonal welding device for tank bodies according to claim 1, characterized in that: A pressure frame (14) is provided on the top of the rotating shaft (3).

7. The polygonal welding device for tank bodies according to claim 1, characterized in that: The cylinder (5), connecting rod (6) and the push pawl (8) on the rotating mechanism (2) are in two sets, and one set of connecting rods (6) is provided with a synchronization detection block (15) for the other set of connecting rods (6).

8. The polygonal welding device for tank bodies according to claim 1, characterized in that: The polygonal welding seat (4) has the same shape as the cross-section of the tank.

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