Adjustable and rotatable transformer body positioning structure

Abstract

The utility model discloses an adjustable and rotatable transformer body positioning structure, and relates to a positioning structure between an upper beam and a box cover of a transformer body. The upper beam positioning structure is mainly designed for solving the problem that production cannot be continued due to the fact that an existing upper beam positioning structure and a box cover positioning flange are not aligned accurately. The box comprises an upper beam and a box cover, a positioning nail is welded to the top of the upper beam, a nail pressing cushion block is arranged outside the positioning nail, a positioning flange is connected to the bottom of the cover plate, and a box cover is fixed to the positioning flange. An insulating paper board is arranged on the lower surface of the cover plate, and the positioning screws are fixed on the insulating paper board, extend into the threaded grooves of the positioning nails and are in threaded connection with the threaded grooves. A first sheath is arranged outside the positioning nail, a second sheath is arranged outside the first sheath, an annular limiting table is arranged at the bottom of an inner ring of the positioning flange, and the second sheath is arranged on the limiting table of the positioning flange. The through holes of the first sheath and the second sheath are eccentric holes. The positioning device has the advantage that normal installation and use of the positioning device are not affected under the condition that parts have manufacturing tolerance.

Description

Technical Field:

[0001] The utility model relates to the field of transformers, and specifically relates to a positioning structure between the upper beam of the transformer body and the tank cover. Background Art:

[0002] The positioning of the transformer body is an important part of the transformer design and is also a prerequisite for ensuring the operation of the transformer.

[0003] At present, the upper beam positioning structure of the transformer body and the tank cover positioning flange are directly aligned. If there are manufacturing errors in the workshop, accurate positioning cannot be achieved. If the upper beam positioning structure and the tank cover positioning flange are misaligned, production cannot continue and rework is required, which is time-consuming and laborious. Summary of the Invention:

[0004] The technical problem to be solved by the utility model is to provide an adjustable and rotatable transformer body positioning structure that does not affect the normal installation and use of the positioning device even when there are manufacturing tolerances in the components.

[0005] The purpose of the utility model is achieved as follows: It includes an upper beam and a tank cover;

[0006] The positioning pin is welded to the top of the upper beam. An annular pressing pin cushion block is sleeved outside the positioning pin. The pressing pin cushion block is placed on the upper beam. A downwardly recessed thread groove is provided on the upper surface of the positioning pin.

[0007] The positioning flange is connected to the bottom of the cover plate by screws. An annular tank cover is fixed on the outer circumference of the positioning flange; an insulating paper board is fixed on the lower surface of the cover plate inside the positioning flange. The top of the positioning screw is fixed on the insulating paper board. The positioning screw extends into the thread groove of the positioning pin and is threadedly connected with the thread groove. The insulating paper board effectively isolates the positioning screw and the cover plate to prevent multi-point grounding of the transformer body. The lower end of the positioning flange is placed on the pressing pin cushion block.

[0008] The pressing pin cushion block is located between the positioning flange and the upper beam, and its height can be adjusted according to the height of the transformer body (i.e., by replacing cushion blocks of different heights), effectively solving the deviation of the total height of the transformer body.

[0009] A first sheath is sleeved outside the positioning pin. The upper surface of the first sheath is higher than the upper surface of the positioning pin. The outer diameter of the upper half of the first sheath is larger than that of the lower half, and the inner diameter of the upper half is the same as that of the lower half;

[0010] A second sheath is sleeved outside the first sheath. The inner diameter of the upper half of the second sheath is larger than that of the lower half, and the outer diameter of the upper half of the second sheath is the same as that of the lower half.

[0011] An annular limiting platform is provided at the bottom of the inner ring of the positioning flange. The second sheath is placed on the limiting platform of the positioning flange.

[0012] The outer shape of the first sheath is stepped, and the inner hole of the second sheath is stepped. After the two positioning sheaths are installed, they form a complementary stepped structure, thus forming an interlocking structure that can tightly fix and support the positioning pin, positioning screw, and flange, preventing the body of the device from shaking.

[0013] The through holes of the first sheath and the second sheath are both eccentric holes, which can rotate with the position of the positioning pin, thus effectively solving the welding deviation of the positioning pin.

[0014] The advantages of the present utility model are as follows: Due to the eccentric sheath structure, even when there are manufacturing tolerances in the components, it does not affect the normal installation and use of the positioning device. The principle is as follows: The outer shape of the second sheath is cylindrical, with a stepped through hole in the middle. There is a certain distance (denoted as C) between the center of the stepped through hole and the central axis of the second sheath; the outer diameter of the first sheath matches the stepped through hole of the second sheath. The first sheath has a cylindrical through hole, and there is a certain distance between the center of the cylindrical through hole and the central axis of the first sheath, and this distance is the same as the offset distance of the middle through hole of the second sheath.

[0015] The adjustment principle is as follows: When the central holes of the second sheath and the first sheath face in opposite directions, the middle opening of the first sheath is exactly on the central axis after the combination of the second sheath and the first sheath; when the central holes of the second sheath and the first sheath face in the same direction, the middle opening of the first sheath is located at a distance of 2C from the central axis after the combination of the second sheath and the first sheath; when the included angle between the openings of the second sheath and the first sheath is between 0° and 180°, the middle opening of the first sheath is located between 0 and 2C of the central axis after the combination of the second sheath and the first sheath.

[0016] Due to the provision of insulating cardboard, the insulating cardboard effectively isolates the positioning screw and the cover plate, preventing multi-point grounding of the body of the device. The cooperation of the two positioning sheaths is a complementary stepped structure, thus forming an interlocking structure that can tightly fix and support the positioning pin, positioning screw, and flange, preventing the body of the device from shaking.

[0017] This structure can be reused after the core is lifted, which is both economical and convenient. Description of the drawings:

[0018] Figure 1 It is the front view structural schematic diagram of the present utility model;

[0019] Figure 2 It is the top view structural schematic diagram of the first sheath in the present utility model;

[0020] Figure 3 It is the top view structural schematic diagram of the second sheath in the present utility model. Specific implementation manner:

[0021] The following further describes the present utility model in conjunction with Figures 1-3 Figures 1-3

[0022] It includes an upper beam 10 and a box cover 6;

[0023] The positioning nail 8 is welded to the top of the upper beam 10. An annular pressing nail cushion block 9 is sleeved outside the positioning nail. The pressing nail cushion block is placed on the upper beam. A downwardly recessed threaded groove is provided on the upper surface of the positioning nail.

[0024] The positioning flange 7 is connected to the bottom of the cover plate 1 by screws. The annular box cover 6 is fixed on the outer circumference of the positioning flange; an insulating cardboard 2 is fixed on the lower surface of the cover plate inside the positioning flange. The top of the positioning screw 3 is fixed on the insulating cardboard. The positioning screw extends into the threaded groove of the positioning nail and is threadedly connected with the threaded groove. The insulating cardboard effectively isolates the positioning screw and the cover plate to prevent multi-point grounding of the body of the apparatus. The lower end of the positioning flange is placed on the pressing nail cushion block.

[0025] The pressing nail cushion block is located between the positioning flange and the upper beam, and its height can be adjusted according to the height of the body of the apparatus (i.e., by replacing cushion blocks of different heights), effectively solving the deviation of the total height of the body of the apparatus.

[0026] A first sheath 4 is sleeved outside the positioning nail. The upper surface of the first sheath is higher than the upper surface of the positioning nail. The outer diameter of the upper half of the first sheath is larger than that of the lower half, and the inner diameter of the upper half is the same as that of the lower half;

[0027] A second sheath 5 is sleeved outside the first sheath. The inner diameter of the upper half of the second sheath is larger than that of the lower half, and the outer diameter of the upper half of the second sheath is the same as that of the lower half.

[0028] An annular limiting platform is provided at the bottom of the inner ring of the positioning flange. The second sheath is placed on the limiting platform of the positioning flange.

[0029] The outer shape of the first sheath is stepped, and the inner hole of the second sheath is stepped. After the two positioning sheaths are installed, they form a complementary stepped structure, thus forming an interlocking structure, which can tightly fix and support the positioning nail, the positioning screw and the flange to prevent the body of the apparatus from shaking.

[0030] The through holes of the first sheath and the second sheath are both eccentric holes, which can rotate along with the position of the positioning nail, thus effectively solving the welding deviation of the positioning nail.

[0031] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable and rotatable positioning structure for the transformer body, comprising an upper beam (10) and a tank cover (6); characterized in that: The positioning pin (8) is welded to the top of the upper beam (10). An annular pressure pin cushion block (9) is sleeved outside the positioning pin. The pressure pin cushion block is placed on the upper beam. A downwardly recessed thread groove is provided on the upper surface of the positioning pin; The positioning flange (7) is connected to the bottom of the cover plate (1) by screws. The annular tank cover (6) is fixed on the outer circumference of the positioning flange; an insulating cardboard (2) is fixed to the lower surface of the cover plate inside the positioning flange. The top of the positioning screw (3) is fixed on the insulating cardboard. The positioning screw extends into the thread groove of the positioning pin and is threadedly connected with the thread groove; the lower end of the positioning flange is placed on the pressure pin cushion block; A first sheath (4) is sleeved outside the positioning pin. The upper surface of the first sheath is higher than the upper surface of the positioning pin. The outer diameter of the upper half of the first sheath is larger than that of the lower half, and the inner diameter of the upper half is the same as that of the lower half; A second sheath (5) is sleeved outside the first sheath. The inner diameter of the upper half of the second sheath is larger than that of the lower half, and the outer diameter of the upper half of the second sheath is the same as that of the lower half; An annular limiting platform is provided at the bottom of the inner ring of the positioning flange. The second sheath is placed on the limiting platform of the positioning flange; The through holes of the first sheath and the second sheath are both eccentric holes.

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