Welding shaping tool for polygonal barrel

Abstract

The utility model discloses a welding shaping tool for a polygonal barrel. The shaping tool comprises a vertically-placed main shaft, the main shaft is vertically connected with a plurality of conical blocks in the same direction in series, the vertical upper portion and the vertical lower portion of each conical block are each provided with a lantern ring, the lantern rings are slidably connected to the main shaft in a sleeving mode, and pin shafts are arranged at the upper ends and the lower ends of the lantern rings for limiting; the outer wall of each conical block is horizontally and annularly provided with petal-shaped blocks corresponding to the edges of the polygonal barrel in number, the horizontal inner wall of each petal-shaped block corresponds to the outer wall of the conical block and is attached to the outer wall of the conical block, the upper bottom face and the lower bottom face of each petal-shaped block are each provided with a tension spring hook, each tension spring hook is connected with a tension spring, and the other end of each tension spring is connected with the closest lantern ring. The horizontal outer wall of each petal-shaped block is vertically and fixedly connected with one or more connecting rods, each connecting rod is vertically and fixedly connected with a shaping plate, and the connecting rods located on the same side face of the shaping tool are connected with the same shaping plate. The insulation distance consistency is high, the processing precision is high, and the production efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of GIS shells and their processing, and particularly relates to a welding and shaping tooling for a polygonal cylinder body. Background Art

[0002] When SF6 circuit breakers and other high-voltage electrical components (except main transformers) are installed in a metal shell filled with SF6 gas at a certain pressure according to the required electrical main wiring to form a set of substation equipment, it is called gas-insulated switchgear or enclosed gas-insulated switchgear, abbreviated as GIS. The external metal shell of GIS is a cylinder, and its function is to seal disconnectors, instrument transformers, etc. in SF6 gas to increase the safety and stability of high-voltage power transmission.

[0003] Usually, the welding of the cylinder body is first spot-welded and riveted, and then directly welded into shape. Due to the influence of stress generated during the welding of the cylinder body, the cylinder body is deformed after welding, which not only affects the processing of subsequent processes, but also the accuracy of the product cannot be guaranteed. Among them, the circular cylinder body can be directly shaped by a rolling machine, while the shaping of the polygonal cylinder body is more difficult.

[0004] Moreover, due to the unequal insulation distances from the internal components to the inner wall of the shell, a relatively large discharge risk will be caused. And increasing the insulation distance to reduce the discharge risk will increase the size of the shell, resulting in waste of materials and an increase in production costs.

[0005] In order to ensure the consistency of the insulation distance and the performance stability of the polygonal cylinder body GIS, preventing welding deformation is an urgent problem to be solved. Content of the Utility Model

[0006] The purpose of the utility model is to provide a welding and shaping tooling for a polygonal cylinder body, which is convenient for welding and shaping the polygonal cylinder body, improves the consistency of the insulation distance, and improves the processing accuracy, aiming at the deficiencies existing in the prior art.

[0007] To achieve the above object, the technical solution adopted by the present utility model is: a welding and shaping tooling for a polygonal cylinder, the shaping tooling vertically penetrates into the interior of the polygonal cylinder, and is characterized in that: the shaping tooling includes a main shaft placed vertically, and a number of conical blocks in the same direction are vertically connected in series on the main shaft. A collar is provided above and below each conical block in the vertical direction. The collar is slidably sleeved on the main shaft, and pins are provided at the upper and lower ends of the collar for limiting. A petal-shaped block corresponding to the number of sides of the polygonal cylinder is horizontally annularly provided on the outer wall of each conical block. The horizontal inner wall of each petal-shaped block corresponds to and fits the outer wall of the conical block, and a spring hook is provided on each of the upper and lower bottom surfaces of each petal-shaped block. Each spring hook is connected with a spring, and the other end of each spring is connected to the nearest collar. One or more connecting rods are vertically fixed on the horizontal outer wall of each petal-shaped block, and a shaping plate is vertically fixed on each connecting rod. The connecting rods on the same side of the shaping tooling are all connected to the same shaping plate. It should be further explained that the main transmission mode of the whole device is the inclined wedge movement completed by the cooperation of the conical block and the petal-shaped block, which converts the vertical movement of the main shaft into the horizontal movement of the petal-shaped block, so that the shaping plate realizes the radial outward expansion movement with the main shaft as the center; the length of each connecting rod is equal, that is, the distance from each shaping plate to the main shaft is equal, ensuring that the shaping plates maintain an equal-distance change during the outward expansion movement; the number of combinations of the corresponding conical blocks and petal-shaped blocks is adjusted according to the length of the cylinder to adapt to cylinders of different lengths; and the shape of the corresponding petal-shaped blocks can be adaptively set according to the number of sides of the cylinder to adapt to cylinders of different numbers of sides. The shaping plate can be replaced according to the specific shape of the material to be shaped, and the size and number of the connecting rods are adjusted and designed according to the strength required for shaping, and its structural form is determined according to needs.

[0008] Preferably, the top of the main shaft is connected with a cylinder through a coupling.

[0009] Preferably, a fixed support is provided on one side of the coupling.

[0010] Preferably, a detachable support is provided at the tail end of the main shaft, and the detachable support is obliquely connected with a telescopic mechanism. It should be further explained that the fixed support is provided to ensure the fixation of the main shaft, and the detachable support is provided to facilitate the installation of the polygonal cylinder.

[0011] Preferably, the telescopic mechanism is a cylinder or a hydraulic cylinder.

[0012] Preferably, two corresponding upper and lower steps are symmetrically opened at the center of the upper and lower end faces of each petal-shaped block, and a semi-circular arc groove is opened on the outer wall of each step.

[0013] Preferably, the spring hoop is arranged in the semi-circular arc groove of the steps on the same plane. It should be further noted that by arranging the spring, the step hoops on the same horizontal plane can be maintained as much as possible on the same horizontal plane when the petal-shaped blocks expand outwards, reducing the up and down dislocation of the petal-shaped blocks on the same horizontal plane.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] 1. The utility model is designed in an umbrella shape, and the main shaft drives the tapered block to cooperate with the petal-shaped block to complete the inclined wedge movement, radially pushing the shaping plates in all directions connected to the connecting rod with the main shaft as the center, achieving the purpose of welding and shaping the square cylinder body, and solving the processing accuracy problem of the polygonal welded cylinder body.

[0016] 2. The utility model is flexible in contraction. Through the cooperation of the tension spring and the air cylinder, the quick installation and disassembly of this tooling can be realized, saving the tooling assembly time, improving the production efficiency, and saving the production cost. Description of the Drawings

[0017] Figure 1 is a sectional view of the utility model.

[0018] Figure 2 is a top view of the utility model.

[0019] Wherein, 10 - main shaft, 11 - tapered block, 12 - collar, 13 - petal-shaped block, 14 - tension spring hook, 15 - tension spring, 16 - connecting rod, 17 - shaping plate, 18 - hexagonal cylinder body, 19 - coupling, 20 - air cylinder, 31 - fixed support, 32 - detachable support, 33 - telescopic mechanism, 41 - step, 42 - spring, 43 - pin shaft. Detailed Embodiment

[0020] The following further clarifies the utility model in conjunction with the drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and not to limit the scope of the utility model. After reading the utility model, various equivalent forms of modification of the utility model by those skilled in the art all fall within the scope defined by the appended claims of this application.

[0021] Such as Figures 1 to 2The welding and shaping tooling for the shown polygonal cylinder body vertically penetrates into the interior of the hexagonal cylinder body 18. The shaping tooling includes a vertically placed main shaft 10. The top of the main shaft 10 is connected with a cylinder 20 through a coupling 19. A fixed support 31 is arranged on one side of the coupling 19. A detachable support 32 is arranged at the tail end of the main shaft 10. The detachable support is obliquely connected with a telescopic mechanism 33. The telescopic mechanism 33 is a hydraulic cylinder. The main shaft 10 is pushed by the cylinder 20 to complete the vertical movement of the main shaft 10. Two conical blocks 11 in the same direction are vertically connected in series on the main shaft 10. Above and below each conical block 11, there is a collar 12 respectively. The collar 12 is slidably sleeved on the main shaft 10. Pin shafts 43 are arranged at the upper and lower ends of the collar 12 for limiting to prevent the collar from being stuck at the edge of the petal-shaped block under the action of the tension spring. Six petal-shaped blocks 13 are horizontally arranged in a ring on the outer wall of each conical block 11. The horizontal inner wall of each petal-shaped block 13 corresponds to and fits with the outer wall of the conical block 11. In the initial state, the six petal-shaped blocks 13 form a whole, and the side walls of each petal-shaped block 13 are mutually attached. At the upper and lower bottom surfaces of each petal-shaped block 13, there is a tension spring hook 14 respectively. The upper and lower tension spring hooks 14 are on the same vertical axis, and the distance of each tension spring hook 14 from the main shaft 10 is the same. Each tension spring hook 14 is connected with a tension spring 15. The other end of each tension spring 15 is connected with the nearest collar 12. At the symmetric centers of the upper and lower end faces of each petal-shaped block 13, there are two corresponding upper and lower steps 41. A semi-circular groove is opened on the outer wall of each step 41. A spring 42 is arranged to hoop in the semi-circular groove of the steps 41 in the same plane. A connecting rod 16 is vertically and fixedly connected to the horizontal outer wall of each petal-shaped block 13. A shaping plate 17 is vertically and fixedly connected to each connecting rod 16. One end of each connecting rod 16 is fixedly connected to the side wall of the petal-shaped block 13, and the other end is fixedly connected to the shaping plate 17. The connecting rods 16 on the same side of the shaping tooling are all connected to the same shaping plate 17. There are a total of six shaping plates 17, and each shaping plate 17 corresponds to each side wall of the cylinder body respectively.

[0022] The working process and principle of the present utility model: The cylinder 20 is started to push the main shaft 10 to move vertically downward. The two conical blocks 11 connected to the main shaft 10 also move vertically downward. The six petal-shaped blocks 13 slidably connected to the outer wall of the conical block 11 horizontally expand outward in the radial direction with the main shaft 10 as the center. The shaping plates 17 expand outward at a uniform speed and complete the shaping of the square cylinder body. At this time, the tension spring 15 is in a stretched state and the collar 12 moves closer to the conical block 11 along with the stretching. After the shaping is completed, the cylinder 20 controls the main shaft 10 to move vertically upward. The two conical blocks 11 move vertically upward with the main shaft 10. At this time, due to the contraction of the tension spring 15, the six petal-shaped blocks also return to the starting point at a uniform speed, and the shaping plates 17 also complete the retraction accordingly.

[0023] The foregoing description illustrates and describes the preferred embodiments of the present utility model. As previously mentioned, it should be understood that the present utility model is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the above teachings or the techniques or knowledge in related fields. Any alterations and changes made by those skilled in the art without departing from the spirit and scope of the present utility model shall fall within the protection scope of the appended claims of the present utility model.

Claims

1. A welding shaping tool for a polygonal cylinder, the shaping tool vertically penetrates into the interior of the polygonal cylinder, characterized in that: The shaping tooling includes a vertically placed main shaft, which is vertically connected with a plurality of conical blocks in the same direction. A ring is provided vertically above and below each conical block, and the ring is slidably sleeved on the main shaft. Pins are provided at the upper and lower ends of the ring for limiting. The horizontal ring of the outer wall of each conical block is provided with a petal block corresponding to the number of sides of the polygonal cylinder. The horizontal inner wall of each petal block corresponds to and fits with the outer wall of the conical block, and a tension spring hook is provided on the upper and lower bottom surfaces of each petal block. Each tension spring hook is connected with a tension spring, and the other end of each tension spring is connected to the nearest ring. The horizontal outer wall of each petal block is vertically fixed with one or more connecting rods, and each connecting rod is vertically fixed with a shaping plate. The connecting rods located on the same side of the shaping tooling are connected to the same shaping plate.

2. A welding and shaping tool for a polygonal cylinder according to claim 1, characterized in that: The top of the main shaft is connected with a cylinder via a coupling.

3. The welding and shaping tool for a polygonal cylinder according to claim 1, characterized in that: A fixed support is provided on one side of the coupling.

4. The welding and shaping tool for a polygonal cylinder according to claim 1, characterized in that: A detachable support is arranged at the tail end of the main shaft, and the detachable support is obliquely connected with a telescopic mechanism.

5. The welding and shaping tool for a polygonal cylinder according to claim 4, characterized in that: The telescopic mechanism is a pneumatic cylinder or a hydraulic cylinder.

6. The welding and shaping tool for a polygonal cylinder according to claim 1, characterized in that: Two corresponding steps are arranged symmetrically at the upper and lower end surfaces of each petal-shaped block, and a semicircular arc groove is arranged on the outer wall of each step.

7. The welding and shaping tool for a polygonal cylinder according to claim 6, characterized in that: The spring hoop is arranged in the semicircular arc groove of the step which is in the same plane.

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