Transformer oil tank cover welding positioning device

Abstract

The utility model discloses a transformer oil tank cover welding positioning device, which belongs to the technical field of transformer oil tanks, and is characterized by comprising an upper positioning plate, a lower positioning shaft, a main positioning shaft and a tank cover structure, an auxiliary positioning shaft is arranged on the inner wall of the upper positioning plate, and a middle positioning plate is arranged at the bottom of the upper positioning plate. The upper positioning plate sleeves the surface of the main positioning shaft, the middle positioning plate sleeves the surface of the main positioning shaft, and the lower positioning plate sleeves the surface of the main positioning shaft, so that the problems that the production efficiency is low, the production cost is high and the like due to the fact that a single-head wire is mostly manually welded when an existing welding positioning device for the transformer oil tank cover is used for welding are solved. And meanwhile, the requirements for perpendicularity and positioning precision after welding cannot be met, once offset and deflection occur, the high-tension porcelain insulator cannot be installed, or the porcelain insulator is broken and damaged, the quality of a finished transformer is seriously affected, and major potential safety hazards exist.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer oil tanks, in particular to a welding positioning device for a transformer oil tank cover. Background Art

[0002] The transformer oil tank is an important part of the transformer, mainly used to accommodate and install the transformer body, transformer oil and transformer components. In particular, the box cover is installed with a large number of various transformer components, among which the high and low voltage porcelain bottles of the transformer are fixed to the box cover by numerous single-head screws.

[0003] The traditional production process relies on manual labor to gradually weld steel plates and angle steels into shape, which not only has low production efficiency, but also affects the accuracy of the transformer oil tank. In addition, there are safety hazards in the process of transporting steel plates and angle steels.

[0004] The existing patent (Announcement No.: CN213969740U) discloses an adjustable tooling for welding transformer oil tanks, wherein the upper positioning frame a is located on one side of the transverse column and the angle formed with the transverse column is a right angle, and the upper positioning frame a is characterized in that the shape of the upper positioning frame a is an inverted T-shape, the limit strip a is the T-shaped convex part of the upper positioning frame a, the upper positioning frame a and the upper positioning frame b are of the same shape and size, and are parallel to both sides of the transverse column, the rotating cylinder a and the rotating cylinder b are respectively located on the outside of the limit strip a and the limit strip b, the transverse column is perpendicular to the longitudinal column and is in a cross shape, and the transverse column can be raised and lowered by rotating the hand wheel, and the beneficial effect is that by rotating the handle, the distance between the upper positioning frame a and the upper positioning frame b can be adjusted to hold transformer oil tank covers of different sizes; the rotating cylinder a and the rotating cylinder b can buckle both sides of the transformer oil tank cover to prevent the transformer oil tank cover from sliding; the height of the transverse column can be adjusted by rotating the hand wheel, and the transformer oil tank top cover is pressed above the transformer oil tank of different heights.

[0005] In view of the above problems, the existing patents have provided solutions. However, when welding, the existing transformer oil tank cover welding and positioning device mostly uses single-end wire for manual welding, which has low production efficiency and cannot meet the requirements of verticality and positioning accuracy after welding. Once offset or skew occurs, the high-voltage porcelain bottle cannot be installed, or the porcelain bottle may be broken or damaged, which will have a serious adverse impact on the quality of the finished transformer and pose a major safety hazard.

[0006] Therefore, a welding positioning device for a transformer oil tank cover is proposed. Utility Model Content

[0007] The purpose of the utility model is to provide a transformer oil tank cover welding positioning device, which can solve the problem that the existing transformer oil tank cover welding positioning device is mostly manual welding with single-head wire, has low production efficiency, and cannot meet the requirements of verticality and positioning accuracy after welding. Once offset or skew occurs, the high-voltage porcelain bottle cannot be installed, or the porcelain bottle is broken or damaged, which has a serious adverse effect on the quality of the finished transformer and poses a major safety hazard.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transformer oil tank cover welding positioning device, comprising an upper positioning plate, a lower positioning shaft, a main positioning shaft and a tank cover structure, the inner wall of the upper positioning plate is provided with a secondary positioning shaft, the bottom of the upper positioning plate is provided with a middle positioning plate, the upper positioning plate is sleeved on the surface of the main positioning shaft, the middle positioning plate is sleeved on the surface of the main positioning shaft, the surface of the main positioning shaft is sleeved with a lower positioning plate, the inner wall of the upper positioning plate is provided with a single-head wire, and the surface of the single-head wire is movably connected to the inner wall of the middle positioning plate.

[0009] Preferably, the upper positioning plate is a circular plate of a certain thickness, with a center hole set at the center position, assembled on the upper part of the main positioning shaft, and three positioning holes and three auxiliary positioning holes are evenly arranged in the radial direction. The middle positioning plate is a triangular plate of a certain thickness, with a center hole set at the center position, assembled in the middle part of the main positioning shaft, and three positioning holes and three auxiliary positioning holes are set at three angular positions. The lower positioning plate is a circular plate of a certain thickness, with an outer diameter consistent with the size of the box cover opening, a center hole set at the center position, and assembled on the lower part of the main positioning shaft.

[0010] Preferably, the upper positioning plate, the middle positioning plate and the lower positioning plate all rotate around the main positioning axis.

[0011] Preferably, the lower positioning shaft is fixed to the bottom of the middle positioning plate.

[0012] Preferably, the positioning holes of the upper positioning plate and the positioning holes of the middle positioning plate have the same size and the same position, and the auxiliary positioning holes of the upper positioning plate and the auxiliary positioning holes of the middle positioning plate have the same size and the same position.

[0013] Preferably, the upper and lower ends of the auxiliary positioning shaft are respectively fixed to the auxiliary positioning hole of the upper positioning plate and the auxiliary positioning hole of the middle positioning plate, so that the upper positioning plate and the middle positioning plate form a whole.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The present application sets an upper positioning plate, a lower positioning shaft, a main positioning shaft and a box cover structure. The upper positioning plate, the lower positioning shaft, the main positioning shaft and the box cover structure are coordinated. The upper positioning plate and the middle positioning plate are stably connected by the secondary positioning shaft and are sleeved on the main positioning shaft. The single-end wire is on the inner wall of the upper positioning plate and movably connected with the inner wall of the middle positioning plate to achieve double positioning. During operation, the single-end wire can be accurately positioned to ensure verticality, avoid skew and offset, improve positioning accuracy and welding quality, meet the installation requirements of the oil tank cover structure, and ensure the stability and safety of the transformer. The device simplifies the operating process and reduces labor intensity. The operator can operate according to the design without complicated adjustments, which greatly improves production efficiency. It is of great practical value in the single-end wire welding production of the transformer oil tank cover structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall structural diagram of the transformer oil tank cover welding positioning device of the utility model;

[0017] Figure 2 This is a structural diagram of the positioning plate in the utility model;

[0018] Figure 3 It is a top view of the upper positioning plate of the utility model;

[0019] Figure 4 It is a front view of the main positioning shaft of the utility model.

[0020] In the figure, 1, upper positioning plate; 2, auxiliary positioning shaft; 3, middle positioning plate; 4, lower positioning shaft; 5, main positioning shaft; 6, lower positioning plate; 7, single-head screw; 8, box cover structure. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 , the utility model provides a technical solution:

[0023] A transformer oil tank cover welding positioning device comprises an upper positioning plate 1, a lower positioning shaft 4, a main positioning shaft 5 and a cover structure 8, the inner wall of the upper positioning plate 1 is provided with a secondary positioning shaft 2, the bottom of the upper positioning plate 1 is provided with a middle positioning plate 3, the upper positioning plate 1 is sleeved on the surface of the main positioning shaft 5, the middle positioning plate 3 is sleeved on the surface of the main positioning shaft 5, the surface of the main positioning shaft 5 is sleeved with a lower positioning plate 6, the inner wall of the upper positioning plate 1 is provided with a single-head thread 7, and the surface of the single-head thread 7 is movably connected to the inner wall of the middle positioning plate 3.

[0024] In this embodiment: by setting the upper positioning plate 1, the lower positioning shaft 4, the main positioning shaft 5 and the box cover structure 8, the upper positioning plate 1 and the middle positioning plate 3 are stably connected through the secondary positioning shaft 2, and both are sleeved on the main positioning shaft 5, so that the single-head thread 7 can achieve double positioning during the installation process, and the single-head thread 7 is arranged on the inner wall of the upper positioning plate 1 and is movably connected with the inner wall of the middle positioning plate 3. During operation, the single-head thread 7 can be accurately positioned with the cooperation of the middle positioning plate 3, effectively ensuring the verticality of the single-head thread 7, and greatly avoiding the quality problems of the single-head thread 7 such as skewness and offset. At the same time, it can significantly improve the positioning accuracy of the single-end wire 7, thereby improving the welding quality, so that the single-end wire 7 after welding can better meet the installation requirements of the transformer oil tank cover structure 8, and ensure the overall stability and safety of the transformer. Moreover, the device simplifies the operating process, and the operator only needs to install the components and position the single-end wire 7 according to the design of the device. There is no need for a complicated adjustment process, which reduces labor intensity and greatly improves production efficiency. It has important practical value in the production process of welding the single-end wire 7 to the transformer oil tank cover structure 8.

[0025] Specifically, Figure 2 , Figure 3 , Figure 4 As shown, the upper positioning plate 1 is a circular plate of a certain thickness, with a center hole set at the center position, assembled on the upper part of the main positioning shaft 5, and three positioning holes and three auxiliary positioning holes are evenly arranged in the radial direction. The middle positioning plate 3 is a triangular plate of a certain thickness, with a center hole set at the center position, assembled in the middle part of the main positioning shaft 5, and three positioning holes and three auxiliary positioning holes are set at three angular positions. The lower positioning plate 6 is a circular plate of a certain thickness, with an outer diameter consistent with the size of the box cover opening, a center hole set at the center position, and assembled on the lower part of the main positioning shaft 5.

[0026] Specifically, Figure 2 , Figure 3 , Figure 4 As shown, the upper positioning plate 1 , the middle positioning plate 3 and the lower positioning plate 6 all rotate around the main positioning axis 5 .

[0027] Specifically, Figure 2 , Figure 4 As shown, the lower positioning shaft 4 is fixed to the bottom of the middle positioning plate 3 .

[0028] In this embodiment: the upper positioning plate 1, the middle positioning plate 3 and the lower positioning plate 6 rotate around the main positioning axis 5, so that the whole device has good flexibility and operability. When installing the single-head wire 7, the angle and position of the single-head wire 7 can be conveniently adjusted to adapt to different welding requirements. The lower positioning axis 4 is fixed to the bottom of the middle positioning plate 3 to provide stable support for the middle positioning plate 3, ensuring that the middle positioning plate 3 remains stable during the welding process, avoiding the positioning accuracy of the single-head wire 7 affected by the shaking of the middle positioning plate 3, thereby ensuring the welding quality. At the same time, the outer diameter of the lower positioning plate 6 is consistent with the size of the box cover opening, and it is assembled at the lower part of the main positioning axis 5. It can play an auxiliary positioning role when positioning the single-head wire 7, further improving the relative position accuracy of the single-head wire 7 and the box cover structure 8, and helping to maintain the position stability of the single-head wire 7 during welding, ensuring the accuracy and consistency of welding, and ensuring the overall quality of the transformer oil tank cover structure 8.

[0029] Specifically, Figure 2 , Figure 3 As shown, the positioning hole of the upper positioning plate 1 and the positioning hole of the middle positioning plate 3 have the same size and the same position, and the auxiliary positioning hole of the upper positioning plate 1 and the auxiliary positioning hole of the middle positioning plate 3 have the same size and the same position.

[0030] Specifically, Figure 2 , Figure 3 , Figure 4 As shown, the upper and lower ends of the auxiliary positioning shaft 2 are respectively fixed to the auxiliary positioning holes of the upper positioning plate 1 and the auxiliary positioning holes of the middle positioning plate 3, so that the upper positioning plate 1 and the middle positioning plate 3 form a whole.

[0031] In this embodiment: the positioning holes of the upper positioning plate 1 and the middle positioning plate 3 are of the same size and in the same position, the secondary positioning holes are also of the same size and in the same position, and the secondary positioning shaft 2 connects the two into a whole, so that the single-head wire 7 can achieve dual positioning during the installation process. On the one hand, the single-head wire 7 is preliminarily positioned through the positioning holes to determine its position on the plane; on the other hand, the connection of the secondary positioning shaft 2 ensures that the relative position of the upper positioning plate 1 and the middle positioning plate 3 is fixed, thereby ensuring that the position of the single-head wire 7 in the vertical direction is stable, effectively avoiding the single-head wire 7 from being offset, skewed, and other problems during the welding process, greatly improving the positioning accuracy of the single-head wire 7, and accurate positioning helps to improve the welding quality, so that the single-head wire 7 can be accurately welded to the predetermined position of the box cover structure 8, and the single-head wire 7 after welding can better meet the installation requirements of the transformer oil tank cover structure 8, thereby ensuring the overall stability and safety of the transformer.

[0032] Working principle: during the use of the upper positioning plate 1, the lower positioning shaft 4, the main positioning shaft 5 and the box cover structure 8, the upper positioning plate 1 is sleeved on the upper part of the main positioning shaft 5 through the center hole, the middle positioning plate 3 is sleeved on the middle part of the main positioning shaft 5, and the lower positioning plate 6 is sleeved on the lower part of the main positioning shaft 5. The lower positioning shaft 4 is fixed to the bottom of the middle positioning plate 3, and the two ends of the auxiliary positioning shaft 2 are respectively fixed in the auxiliary positioning holes of the upper positioning plate 1 and the middle positioning plate 3 to form a whole. At this time, the upper positioning plate 1, the middle positioning plate 3 and the lower positioning plate 6 can rotate around the main positioning shaft 5 to provide operational flexibility. When installing the single-head screw 7, the single-head screw 7 is inserted into the positioning hole on the inner wall of the upper positioning plate 1. Since the positioning holes of the upper positioning plate 1 and the middle positioning plate 3 are of the same size and position, the single-head screw 7 can smoothly pass through the positioning hole of the middle positioning plate 3, and the single-head screw 7 is movably connected to the inner wall of the middle positioning plate 3. 3, preliminary positioning is achieved with the cooperation of the auxiliary positioning shaft 2 to determine its position on the plane. At the same time, the auxiliary positioning shaft 2 ensures that the relative positions of the upper positioning plate 1 and the middle positioning plate 3 are fixed, ensuring that the single-head wire 7 is stable in the vertical direction, realizing double positioning, and effectively avoiding the single-head wire 7 from being offset or skewed. By rotating the upper positioning plate 1 and the middle positioning plate 3, the angle and position of the single-head wire 7 can be conveniently adjusted to adapt to different welding requirements. The outer diameter of the lower positioning plate 6 is consistent with the opening size of the box cover structure 8, and the relative position of the single-head wire 7 and the box cover structure 8 is auxiliaryly positioned at the lower part of the main positioning shaft 5. During the welding process, the stable cooperation of each component keeps the position of the single-head wire 7 stable, ensuring welding accuracy and consistency, improving welding quality, and making the single-head wire 7 after welding meet the installation requirements of the transformer oil tank cover structure 8, ensuring the overall performance of the transformer, simplifying the operation process of the whole process, reducing labor intensity, and improving production efficiency.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A transformer oil tank cover welding positioning device, comprising an upper positioning plate (1), a lower positioning shaft (4), a main positioning shaft (5) and a tank cover structure (8), characterized in that: The inner wall of the upper positioning plate (1) is provided with a secondary positioning shaft (2), the bottom of the upper positioning plate (1) is provided with a middle positioning plate (3), the upper positioning plate (1) is sleeved on the surface of the main positioning shaft (5), the middle positioning plate (3) is sleeved on the surface of the main positioning shaft (5), the surface of the main positioning shaft (5) is sleeved with a lower positioning plate (6), the inner wall of the upper positioning plate (1) is provided with a single-end thread (7), and the surface of the single-end thread (7) is movably connected to the inner wall of the middle positioning plate (3).

2. A transformer oil tank cover welding positioning device according to claim 1, characterized in that: The upper positioning plate (1) is a circular plate of a certain thickness, with a center hole set at the center position, assembled on the upper part of the main positioning shaft (5), and three positioning holes and three auxiliary positioning holes are evenly set in the radial direction. The middle positioning plate (3) is a triangular plate of a certain thickness, with a center hole set at the center position, assembled on the middle part of the main positioning shaft (5), and three positioning holes and three auxiliary positioning holes are set at three corner positions. The lower positioning plate (6) is a circular plate of a certain thickness, with an outer diameter consistent with the size of the opening of the box cover, with a center hole set at the center position, and assembled on the lower part of the main positioning shaft (5).

3. A transformer oil tank cover welding positioning device according to claim 1, characterized in that: The upper positioning plate (1), the middle positioning plate (3) and the lower positioning plate (6) all rotate around the main positioning axis (5).

4. A transformer oil tank cover welding positioning device according to claim 1, characterized in that: The lower positioning shaft (4) is fixed to the bottom of the middle positioning plate (3).

5. A transformer oil tank cover welding positioning device according to claim 1, characterized in that: The positioning hole of the upper positioning plate (1) and the positioning hole of the middle positioning plate (3) have the same size and the same position, and the auxiliary positioning hole of the upper positioning plate (1) and the auxiliary positioning hole of the middle positioning plate (3) have the same size and the same position.

6. A transformer oil tank cover welding positioning device according to claim 1, characterized in that: The upper and lower ends of the auxiliary positioning shaft (2) are respectively fixed to the auxiliary positioning hole of the upper positioning plate (1) and the auxiliary positioning hole of the middle positioning plate (3), so that the upper positioning plate (1) and the middle positioning plate (3) form a whole.

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