An auxiliary device for aligning insulating paper rings

Abstract

An auxiliary device for aligning an insulating paper coil belongs to the technical field of transformer production and comprises a positioning portion, a measuring portion, a centering portion, and a paper coil. The measuring portion is mounted on the positioning portion, and the centering portion is mounted on the measuring portion. The positioning portion comprises a central rod, a first side rod, a second side rod, and a compression nut. The first and second side rods are hingedly connected at both ends of the central rod, forming a tangentially embracing structure with the paper coil. The measuring portion comprises three, hingedly mounted on the first, second, and third bosses, respectively. The measuring portion comprises a rocker arm, a waist-shaped groove, and a hinge hole. The front end of the rocker arm comprises a waist-shaped groove, and the rear end of the rocker arm comprises a hinge hole. The three rocker arms face inward. Due to the height difference between the three columns, the three rocker arms intersect with each other, and an envelope is formed between the three waist-shaped grooves. The centering portion is mounted within this envelope. The centering portion comprises a round table, a core rod, and a round nut. The core rod is sleeved and mounted within the envelope formed by the intersection of the three waist-shaped grooves.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer production, and in particular relates to an insulating paper ring alignment auxiliary device. Background Art

[0002] Insulation components are a crucial component of transformers, and their production occupies a significant workload on-site. While numerous types of insulation components are required, a common and crucial type is the insulating paper ring, typically used as an insulating end ring. When using an insulating end ring, the center of the paper ring must be located, a process known as paper ring alignment. This process significantly impacts subsequent paper ring use. Currently, on-site operators typically rely on transmission methods to align the paper ring, a task that requires significant skill and experience. Consequently, the industry needs a simple, easy-to-use paper ring alignment device to assist in this task. Summary of the Invention

[0003] The present invention provides an insulating paper ring alignment auxiliary device to solve the problems in the above-mentioned background technology.

[0004] The technical problem solved by the present invention is achieved by adopting the following technical solutions:

[0005] An insulating paper ring alignment auxiliary device comprises a positioning part, a measuring part, a centering part and a paper ring, wherein the measuring part is mounted on the positioning part, the centering part is mounted on the measuring part, and the paper ring is located inside the positioning part.

[0006] The positioning portion includes a central rod, a first side rod, a second side rod, and a compression nut. The central rod is hingedly connected to the first and second side rods at both ends. Together, the central rod, the first and second side rods form a tangentially encircling structure around the paper ring. A first column is located in the middle of the central rod, with a first boss located at the top of the first column. The central rod has lower flanges at both ends, each with a rotating shaft attached. The first side rod has a second column located on its top, with a second boss located at its top. The first side rod has a first upper flange located at its end, which cooperates with the lower flange to mount the first side rod. A through hole is located in the center of the first upper flange, which is hingedly connected to the rotating shaft. When installed, the distance between the second boss and the rotating shaft is equal to the distance between the first boss and the rotating shaft. The second side rod has a third column located on its top, with a third boss located at its top. A second upper flange is located at the end of the second side rod, which cooperates with the lower flange to hinge. When installed, the distance between the third boss and the rotating shaft on that side is equal to the distance between the first boss and the rotating shaft.

[0007] There are three measuring parts, which are hingedly mounted on the first, second and third bosses respectively. The measuring parts include a rocker arm, a waist-shaped groove and a hinge hole. The front end of the rocker arm has a waist-shaped groove, and the rear end of the rocker arm has a hinge hole. The hinge hole is hingedly mounted to each boss. The three rocker arms face inward. Due to the height difference between the three columns, the three rocker arms intersect with each other and form an envelope between the three waist-shaped grooves. The centering part is installed in this envelope. The centering part includes a frustum, a core rod, a laser pen and a round nut. The top of the frustum has a core rod, which is sleeved and mounted in the envelope formed by the intersection of the three waist-shaped grooves. The diameter of the core rod is consistent with the diameter of the waist-shaped groove. The laser pen is installed at the bottom of the frustum, and the top of the core rod is threaded and mounted with a round nut.

[0008] Furthermore, the height of the lower flange is half of the central rod.

[0009] Furthermore, the first column, the second column and the third column form a height difference with each other, and the height difference is equal to the thickness of the measuring part, which facilitates the installation of the measuring part.

[0010] Furthermore, a compression nut is installed on the rotating shaft, and the compression nut compresses the positions of the first side rod and the second side rod respectively with the central rod.

[0011] Furthermore, in order to ensure accurate alignment and centering operations, the widths of the central rod, the first side rod and the second side rod should be consistent. More specifically, the horizontal projection distance between the center of the first boss and the inner side of the central rod, the horizontal projection distance between the center of the second boss and the inner side of the first side rod, and the horizontal projection distance between the center of the third boss and the side wall of the second side rod should be equal.

[0012] Furthermore, in order to ensure the accuracy of the final alignment and centering operation, the side of the top surface of the rocker arm is also provided with a size scale, which makes it easy to find the center of the paper circle according to the size scale in the final operation.

[0013] The beneficial effects of the present invention are:

[0014] This device is used to align and center insulating paper coils during transformer case production. It utilizes simple geometric principles: the center of an inscribed circle lies on the angle bisector. Two sets of angle bisectors are introduced, and the intersection of these two lines is the center of the circle. This device is simple and reliable to operate, significantly reducing operator workload, minimizing errors, and improving alignment accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the present invention;

[0016] Figure 2 It is a front view of the present invention;

[0017] Figure 3 is an exploded view of the present invention;

[0018] In the figure: 10. Positioning part, 11. Central rod, 111. First column, 112. First boss, 113. Lower flange, 114. Rotating shaft, 12. First side rod, 121. Second column, 122. Second boss, 123. First upper flange, 13. Second side rod, 131. Third column, 132. Third boss, 133. Second upper flange, 14. Pressing nut, 20. Measuring part, 21. Rocker arm, 22. Waist-shaped groove, 23. Hinge hole, 30. Centering part, 31. Round table, 32. Core rod, 33. Laser pen, 34. Round nut, 40. Paper ring. DETAILED DESCRIPTION

[0019] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive disclosure of the present invention.

[0020] See also Figure 1-Figure 3 The insulating paper ring alignment auxiliary device shown includes a positioning part 10, a measuring part 20, a centering part 30 and a paper ring 40. The measuring part 20 is installed on the positioning part 10, the centering part 30 is installed on the measuring part 20, and the paper ring 40 is located inside the positioning part 10.

[0021] The positioning portion 10 includes a central rod 11, a first side rod 12, a second side rod 13, and a compression nut 14. The first and second side rods 12, 13 are hingedly connected at both ends of the central rod 11. Together, the central rod 11, the first side rod 12, and the second side rod 13 form a tangentially encircling structure around the paper ring 40. A first upright post 111 is located in the middle of the central rod 11, and a first boss 112 is located at the top of the first upright post 111. Lower flanges 113 are located at both ends of the central rod 11. Lower flanges 113 are half the height of the central rod 11 and are provided with a rotating shaft 114. The first side bar 12 has a second column 121 with a second boss 122 at its top. The end of the first side bar 12 has a first upper flange 123 that cooperates with the lower flange 113 to install the first side bar 12. The center of the first upper flange 123 has a through hole that is hingedly connected to the rotating shaft 114. After installation, the distance between the second boss 122 and the rotating shaft 114 is equal to the distance between the first boss 112 and the rotating shaft 114. The second side bar 13 has a third column 131 with a third boss 132 at its top. The end of the second side bar 13 has a second upper flange 133 that cooperates with the lower flange 113 to achieve a hinged connection. After installation, the distance between the third boss 132 and the rotating shaft 114 on that side is equal to the distance between the first boss 112 and the rotating shaft 114. The first column 111, the second column 121, and the third column 131 form a height difference that is equal to the thickness of the measuring section 20, facilitating the installation of the measuring section 20. A compression nut 14 is mounted on the rotating shaft 114 to compress the first side bar 12 and the second side bar 13 against the central bar 11. Furthermore, to ensure accurate alignment and centering, the widths of the central bar 11, the first side bar 12, and the second side bar 13 should be consistent. More specifically, the horizontal projection distance between the center of the first boss 112 and the inner side of the central bar 11, the horizontal projection distance between the center of the second boss 122 and the inner side of the first side bar 12, and the horizontal projection distance between the center of the third boss 132 and the side wall of the second side bar 13 should be equal.

[0022] The measuring section 20 comprises three hinged members, each hingedly mounted on the first, second, and third bosses 112, 122, and 132. The measuring section 20 includes a rocker arm 21, a kidney-shaped groove 22, and a hinge hole 23. The front end of the rocker arm 21 has a kidney-shaped groove 22, while the rear end of the rocker arm 21 has a hinge hole 23. The hinge holes 23 are hingedly mounted to the respective bosses. The three rocker arms 21 face inward. Due to the height difference between the three columns, the three rocker arms 21 intersect with each other, and the three kidney-shaped grooves 22 form an envelope within which the centering section 30 is mounted. Furthermore, to ensure accurate alignment and centering, the top side of the rocker arm 21 features a dimensional scale (not shown). This scale facilitates finding the center of the paper ring 40 during the final operation.

[0023] The centering part 30 includes a frustum 31, a core rod 32, a laser pen 33 and a round nut 34. The top of the frustum 31 is provided with a core rod 32, and the core rod 32 is sleeved and installed in the envelope space formed by the intersection of the three waist-shaped grooves 22. The diameter of the core rod 32 is consistent with the caliber of the waist-shaped groove 22, so that the core rod 32 is tightly hinged at the intersection of the measuring part 20. The bottom of the frustum 31 is installed with a laser pen 33, and the laser pen 33 emits a dot light downward to illuminate the paper ring 40 to indicate the center of the circle. The top of the core rod 32 is threaded and a round nut 34 is installed. On the one hand, the round nut 34 plays a connecting and installing role for the core rod 32. On the other hand, after completing the alignment and centering operation, the round nut 34 is used to tighten the centering part 30, which is convenient for fixing the indicated position of the center of the circle and marking the center position with an appropriate smearing tool.

[0024] The operating principle of the present invention is as follows: First, loosen both the compression nut 14 and the round nut 34, maintaining the entire device in an operational state and allowing flexible movement between the rods. Place the paper ring 40 to the side of the central rod 11, maintaining tangency (i.e., contact) with the inner side of the central rod 11. Furthermore, the point of tangency (contact) between the paper ring 40 and the central rod 11 is kept as close to the first upright 111 as possible. At this point, a suitable pressure block can be placed on the outside of the paper ring 40 to hold it in place, facilitating the positioning of the newspaper paper ring 40. This prevents the paper ring 40 from shifting during subsequent operations. Separately operate the first side rod 12 and the second side rod 13, ensuring that each side rod is tangent (contacting) with the paper ring 40 from its respective direction. Tighten the compression nut 14 to maintain a fixed relative angle between the rods. Next, operate the centering unit 30. Moving it will cause the three measuring units 20 to rotate in coordination. During this operation, carefully observe the correspondence between the dimensional scale values ​​on the round nut 34 and the rocker arms 21. Alignment is complete until the dimensional scale values ​​on the round nut 34 and the three rocker arms 21 are equal. Tighten the round nut 34. The point where the laser pointer 33 shines downward on the paper ring 40 is the center of the paper ring 40. Simple geometry will easily reveal that this device achieves center alignment using the geometric principle of the intersection of the angle bisectors of two sets of tangent angles.

[0025] The above embodiments primarily illustrate the insulating paper coil alignment aid device of the present invention. While only a limited number of embodiments and technical features have been described, those skilled in the art will appreciate that the present invention may be implemented in numerous other forms without departing from its spirit and scope. Therefore, the illustrated embodiments are to be considered illustrative rather than restrictive, and the present invention may encompass various modifications and alternatives without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An insulating paper coil alignment auxiliary device, comprising a positioning portion (10), a measuring portion (20) and a centering portion (30), characterized in that: The measuring part (20) is mounted on the positioning part (10), the centering part (30) is mounted on the measuring part (20), the insulating paper ring (40) is located inside the positioning part (10), the positioning part (10) comprises a central rod (11), a first side rod (12), a second side rod (13) and a clamping nut (14), the first side rod (12) and the second side rod (13) are hinged at both ends of the central rod (11), the central rod (11), the first side rod (12) and the second side rod (13) together form a tangent embracing structure for the insulating paper ring (40), the central rod (11) has a first column (111) in the middle, the first column (111) has a first boss (112) at the top, and the central rod (111) has a first boss (112). 1) Both ends have lower flanges (113), the lower flanges (113) have a rotating shaft (114), the first side rod (12) has a second column (121), the top of the second column (121) has a second boss (122), the end of the first side rod (12) has a first upper flange (123), the first upper flange (123) cooperates with the lower flange (113) to realize the installation of the first side rod (12), the center of the first upper flange (123) has a through hole and is hinged to the rotating shaft (114), the distance between the second boss (122) and the rotating shaft (114) after installation is equal to the distance between the first boss (112) and the rotating shaft (114), the second side rod (13) has a third column (131) ), the top of the third column (131) has a third boss (132), the end of the second side rod (13) has a second upper flange (133), the second upper flange (133) cooperates with the lower flange (113) to realize hinge connection, the distance between the third boss (132) and the rotating shaft (114) on the same side after installation is equal to the distance between the first boss (112) and the rotating shaft (114), the measuring part (20) has three, which are hingedly installed on the first boss (112), the second boss (122) and the third boss (132), the measuring part (20) includes a rocker arm (21), a waist-shaped groove (22) and a hinge hole (23), the front end of the rocker arm (21) has a waist-shaped groove (22), the rocker arm (21) The rear end is provided with a hinge hole (23), and the hinge hole (23) is hingedly installed with each boss. The three rocker arms (21) intersect with each other and an envelope space is formed in the middle of the three waist-shaped grooves (22). A centering part (30) is installed in the envelope space. The centering part (30) includes a round table (31), a core rod (32), a laser pen (33) and a round nut (34). The top of the round table (31) is provided with a core rod (32). The core rod (32) is sleeved and installed in the envelope space formed by the intersection of the three waist-shaped grooves (22). The diameter of the core rod (32) is consistent with the caliber of the waist-shaped grooves (22). The laser pen (33) is installed at the bottom of the round table (31). The top of the core rod (32) is provided with a thread and a round nut (34) is installed.

2. The insulating paper ring alignment auxiliary device according to claim 1, characterized in that: The height of the lower flange (113) is half of the height of the central rod (11).

3. The insulating paper ring alignment auxiliary device according to claim 1, characterized in that: The first column (111), the second column (121) and the third column (131) form a height difference with each other, and the height difference is equal to the thickness of the measuring part (20), which facilitates the installation of the measuring part (20).

4. The insulating paper ring alignment auxiliary device according to claim 1, characterized in that: A compression nut (14) is installed on the rotating shaft (114), and the compression nut (14) compresses the positions of the first side rod (12), the second side rod (13) and the central rod (11) respectively.

5. The insulating paper ring alignment auxiliary device according to claim 1, characterized in that: The horizontal projection distance between the center of the first boss (112) and the inner side of the central rod (11), the horizontal projection distance between the center of the second boss (122) and the inner side of the first side rod (12), and the horizontal projection distance between the center of the third boss (132) and the inner side of the second side rod (13) are equal.

6. The insulating paper ring alignment auxiliary device according to claim 1, characterized in that: The side of the top surface of the rocker arm (21) also has a size scale, and in the final operation, the center of the insulating paper ring (40) can be easily found according to the size scale.

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