Shielding tool for shot blasting process

Abstract

The utility model relates to the technical field of tooling equipment, in particular to a shielding tooling for a shot blasting process, which comprises a shielding part, a positioning part and a supporting part, the shielding part is used for shielding a corrugated oil tank and comprises a shielding steel plate and a sealing strip; the positioning part is used for limiting the relative position of the corrugated oil tank and the shielding tool and comprises a guide block and a mounting hole; the supporting part is used for supporting the corrugated oil tank and the shielding tool and comprises two steel channels which are welded to the bottom of the shielding steel plate and arranged in parallel. The shielding tool can effectively prevent shots from entering the corrugated oil tank in the shot blasting process, and meanwhile, a guide device is designed, so that the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling equipment, in particular to a shielding tooling for shot peening process. Background Art

[0002] The corrugated oil tank is an efficient and adaptable design scheme for transformer oil tanks. Its characteristic is that the tank wall has a corrugated structure, which can improve the heat dissipation efficiency and operation stability of the transformer. In large power transformers, the design of corrugated oil tanks has become a standard configuration. The production process of corrugated oil tanks includes a step of shot peening, that is, using a high-speed jet to project pellets onto the outer surface of the corrugated oil tank to remove dirt, oxide layers, rust and other bad substances on the surface, so as to achieve the effect of cleaning and improving the surface quality.

[0003] During the shot peening process, the pellets may bounce into the gaps between the corrugated sheets inside the corrugated oil tank. Since the volume of the pellets is small and difficult to clean, the remaining pellets are likely to cause short circuits during the subsequent general assembly process. Some shielding toolings are designed in the prior art to shield the inner cavity of the corrugated oil tank during the shot peening step. However, such shielding toolings have the problem of difficult installation guidance. During the installation process, it is very difficult to align the position with the shielding tooling due to the shaking of the corrugated oil tank, and it takes a long time for workers to adjust, resulting in very low operation efficiency. In addition, during the shot peening process, there are differences in the forces on the corrugated oil tank in different directions, which may cause displacement and drive the sealing strips on the shielding tooling to shift, resulting in the loss of the shielding effect and some pellets entering the corrugated oil tank to form potential hazards. Summary of the Utility Model

[0004] The utility model provides a shielding tooling for shot peening process, aiming to improve the situation that pellets enter the corrugated oil tank due to the displacement of the tooling during the shot peening process. At the same time, the tooling is designed with a positioning device, which improves the work efficiency of production personnel.

[0005] The present application provides the following technical solutions:

[0006] A shielding tooling for shot peening process includes a shielding part, a positioning part and a supporting part. Among them, the shielding part is used to shield the corrugated oil tank, including a rectangular shielding steel plate and a rectangular sealing strip. The horizontal dimension of the shielding steel plate is equal to the horizontal projection dimension of the base of the corrugated oil tank. The inner frame dimension of the sealing strip is equal to the horizontal projection dimension of the inner cavity of the corrugated oil tank. The outer frame dimension of the sealing strip is smaller than the horizontal projection dimension of the base of the corrugated oil tank, and the four corners are chamfered. The positioning part is used to define the relative position between the corrugated oil tank and the shielding tooling, including a guiding unit arranged inside the sealing strip. The supporting part is used to provide support for the corrugated oil tank and the shielding tooling, including two parallel arranged channel steels welded to the bottom of the shielding steel plate.

[0007] Technical principle: A positioning part and a shielding part are designed for the corrugated fuel tank. An efficient guiding device is designed in the vertical direction, and the corrugated fuel tank is positioned and assisted through guide blocks; when the corrugated fuel tank is placed in place, the shielding steel plate at the bottom and the sealing strip form a three-dimensional shielding structure to seal the bottom opening of the corrugated fuel tank. Two channel steels are welded at the bottom to raise the shielding steel plate.

[0008] Beneficial effects: The shielding steel plate and the sealing strip form a three-dimensional shielding structure, effectively preventing pellets from entering the inner cavity of the corrugated fuel tank; workers can easily judge whether the corrugated fuel tank is placed in place by observing the guide blocks, improving the operation efficiency; the sealing strip is sleeved outside the guide blocks, and the guide blocks support and limit the sealing strip from the inside to ensure that the sealing strip will not move, and the limited sealing strip also limits the corrugated fuel tank. The channel steels welded at the bottom prevent the shielding steel plate from contacting the ground and being worn.

[0009] Furthermore, the positioning part further includes four mounting holes provided at the four corners of the shielding steel plate, which respectively correspond to the positions of the mounting holes on the base of the corrugated fuel tank.

[0010] Beneficial effects: After the corrugated fuel tank is placed in place, bolts are used to fix the corrugated fuel tank and the shielding tooling, ensuring the reliable connection between the shielding tooling and the corrugated fuel tank.

[0011] Furthermore, the guiding unit includes four guide blocks provided at the four corner positions of the inner frame of the sealing strip. The bottom of the guide blocks is welded to the shielding steel plate. The two sides of the vertical surface of the guide blocks are bent inward to form a U-shaped cross-section, and the length of the U-shaped cross-section gradually decreases from bottom to top. The top of the guide blocks inclines towards the center of the shielding steel plate.

[0012] Beneficial effects: The guide blocks are provided with a U-shaped structure that is narrow at the top and wide at the bottom. In the vertical direction, the four guide blocks form a quadrilateral guiding channel from top to bottom. Since the size of the guide blocks gradually increases and the outer sides of the guide blocks incline towards the center of the shielding steel plate, the guiding accuracy of the guiding channel gradually increases in the vertical direction. When the corrugated fuel tank approaches the shielding tooling from above, a large range of size adjustments can be achieved in the horizontal direction; when the corrugated fuel tank is further placed downwards, the corrugated fuel tank will continuously correct its position along the outer side direction of the guide blocks. Since the size of the guide blocks gradually increases, the positioning accuracy continues to improve. Finally, when the corrugated fuel tank moves to contact the sealing strip, the accurate positioning of the fuel tank can be completed, saving time and effort, simple and fast. At the same time, the structure of the guide blocks themselves is simple and the cost is low.

[0013] Furthermore, the sealing strip is made of ethylene propylene diene monomer (EPDM).

[0014] Beneficial effects: Ethylene propylene diene monomer (EPDM) has good processing performance, weather resistance and anti-aging performance, which can ensure the long-term stable operation of the shielding tooling. Description of the drawings

[0015] Figure 1 It is a structural schematic diagram of a shielding tooling for shot peening process;

[0016] Figure 2 It is a connection schematic diagram of the shot peening process shielding tooling and the corrugated fuel tank. Specific embodiments

[0017] The following is a further detailed description through specific embodiments:

[0018] The markings in the specification drawings include: shielding steel plate 1, sealing strip 2, mounting holes 3, guiding blocks 4, channel steel 5.

[0019] Embodiment 1

[0020] This embodiment provides a shielding tooling for shot peening process, as Figure 1 shown, including a shielding part, a positioning part and a supporting part.

[0021] Among them, the shielding part is used to shield the corrugated fuel tank, including a rectangular shielding steel plate 1 and a sealing strip 2. The horizontal dimension of the shielding steel plate 1 is equal to the horizontal projection dimension of the corrugated fuel tank shell, the inner frame dimension of the sealing strip 2 is equal to the horizontal projection dimension of the inner cavity of the corrugated fuel tank, the outer frame dimension of the sealing strip 2 is smaller than the horizontal projection dimension of the corrugated fuel tank base, and the four corners of the sealing strip 2 are chamfered. The shielding steel plate 1 and the sealing strip 2 form a three-dimensional shielding structure, effectively preventing shot particles from entering the inner cavity of the corrugated fuel tank. The sealing strip 2 is made of ethylene propylene diene monomer rubber, and its good weather resistance and anti-aging performance can ensure that the sealing strip 2 is not easily deformed or damaged, and the shielding effect is stable and reliable.

[0022] The positioning part is used to complete the positioning and fixing of the corrugated fuel tank, including four guiding blocks 4 arranged at the four corners of the inner frame of the sealing strip and four mounting holes 3 arranged at the four corners of the shielding steel plate. The two vertical sides of the guiding block 4 are bent inward to form a U-shaped cross-section, and the bottom is welded to the shielding steel plate 1. The length of the U-shaped cross-section gradually decreases from bottom to top, being narrow at the top and wide at the bottom, and the top inclines towards the center of the shielding steel plate 1, forming a quadrilateral guiding channel with gradually increasing accuracy from top to bottom. The positions of the four mounting holes 3 of the shielding tooling correspond to the mounting holes on the corrugated fuel tank base respectively. The sealing strip 2 is sleeved on the outside of the guiding block 4, and the guiding block 4 supports and limits the sealing strip 2 from the inside, ensuring that the sealing strip 2 will not move. At the same time, the limited sealing strip 2 also limits the corrugated fuel tank.

[0023] The supporting part is used to provide support for the corrugated fuel tank and the shielding tooling, including two parallel channel steels 5 welded to the bottom of the shielding steel plate. The channel steel 5 raises the bottom of the shielding steel plate to avoid wear.

[0024] During actual use, as Figure 2As shown in the figure, bring the corrugated fuel tank close to the shielding tooling from above. Workers can conveniently judge the relative position between the corrugated fuel tank and the shielding tooling by observing the guiding blocks and complete the preliminary alignment. When the corrugated fuel tank moves further downward, guided by the inclined surface on the side of the guiding block 4, the relative position will be continuously corrected along the outer side direction of the guiding block 4. Due to the continuous improvement of the positioning accuracy of the guiding block 4, finally when the corrugated fuel tank contacts the sealing strip 2, the accurate positioning of the fuel tank position is completed, which is time-saving, labor-saving, simple and fast. At this time, the worker connects the corrugated fuel tank and the shielding tooling together through bolts and corresponding mounting holes. Under the limiting action of the guiding block 4 from the inside and the fixing effect of the external bolts, a reliable connection is formed between the corrugated fuel tank and the sealing strip 2, and no displacement will occur during the shot peening process, effectively preventing the shot from entering the inside of the corrugated fuel tank.

[0025] The above are only the embodiments of the present invention. The present invention is not limited to the fields involved in this embodiment case. Common knowledge such as the specific structures and characteristics known in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to explain the content of the claims.

Claims

1. A shielding tool for shot blasting process, characterized in that: It includes a shielding part, a positioning part and a supporting part, wherein the shielding part is used to shield the corrugated oil tank, and includes a rectangular shielding steel plate and a rectangular sealing strip, the horizontal dimension of the shielding steel plate is equal to the horizontal projection dimension of the corrugated oil tank base, the inner frame dimension of the sealing strip is equal to the horizontal projection dimension of the inner cavity of the corrugated oil tank, the outer frame dimension of the sealing strip is smaller than the horizontal projection dimension of the corrugated oil tank base, and the four corners are chamfered; the positioning part is used to limit the relative position of the corrugated oil tank and the shielding tooling, and includes a guide unit arranged on the inner side of the sealing strip; the supporting part is used to provide support for the corrugated oil tank and the shielding tooling, and includes two parallel channel steels welded to the bottom of the shielding steel plate.

2. The shielding tool for shot blasting process according to claim 1, characterized in that: The positioning portion also includes four mounting holes arranged at the four corners of the shielding steel plate, which respectively correspond to the positions of the mounting holes on the corrugated oil tank base.

3. The shielding tool for shot blasting process according to claim 2, characterized in that: The guide unit includes four guide blocks arranged at the four corners of the inner frame of the sealing strip. The bottom of the guide block is welded to the shielding steel plate. The two sides of the vertical surface of the guide block are bent inward to form a U-shaped cross-section. The length of the U-shaped cross-section gradually decreases from bottom to top, and the top of the guide block is inclined toward the center of the shielding steel plate.

4. The shielding tool for shot blasting process according to claim 1, characterized in that: The sealing strip is made of EPDM rubber.

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