Top puller for oil tank of transformer

Abstract

A top puller for a transformer oil tank comprises an L-shaped connecting seat, an extension plate is arranged at one end of the connecting seat, two through holes are formed in the extension plate and used for mounting connecting bolts, and a top pressing device is transversely mounted at the other end of the connecting seat. The connecting seat is mounted on a related connecting bolt of the oil tank, a flange or a tank cover of the tank body of the oil tank is jacked and pressed through the jacking and pressing device, and a bolt hole in the side of the jacking and pulling device is aligned, so that the connecting bolt on the tank cover and the tank body is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer maintenance tools, in particular to a transformer oil tank top puller. Background Art

[0002] The transformer barrel oil tank cover and the tank body, as well as the upper and lower sections, are generally connected by bolts. When disassembling the tank cover or the tank body, the corresponding connecting bolts cannot be removed or inserted due to deformation and squeezing of the tank wall. Figure 5 , the box wall of the box body 10 will be deformed, causing the bolt holes of the box body 10 and the box cover 20 to be misaligned, resulting in the inability to remove or insert the connecting bolts. In order to facilitate the disassembly and assembly of the relevant connecting bolts, especially the connecting bolts between the box cover 20 and the upper edge of the box body 10, a top puller that can be fixed on the connecting screw holes of the transformer oil tank is designed. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, and to provide a transformer oil tank top puller, by installing a connecting seat onto relevant connecting bolts of the oil tank, and then using a top pressing device to press the flange or the tank cover of the oil tank body, so as to align the bolt holes on the side of the top puller, thereby facilitating the disassembly and assembly of the connecting bolts on the tank cover and the tank body.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a transformer oil tank top puller, including a connecting seat, the connecting seat is L-shaped, an extension plate is arranged at one end of the connecting seat, two through holes are arranged on the extension plate, the through holes are used to install connecting bolts, and a top pressure device is horizontally installed at the other end of the connecting seat.

[0005] The pressing device is a pressing bolt. The connecting seat is provided with a threaded hole at one end where the pressing device is installed. The pressing bolt is screwed into the threaded hole, and the threaded end of the pressing bolt extends to one side of the connecting bolt.

[0006] The threaded end of the pressing bolt is rotatably mounted with a first cushion block.

[0007] The connecting seat comprises a base and a fixing seat, the base and the fixing seat form an L-shaped connecting seat, the pressing device is a jack, the jack is located on the base, and when in use, the fixed end of the jack abuts against the fixing seat.

[0008] The fixing seat is provided with a first screw rod which is screwed in parallel with the base. A second cushion block is provided at one end of the first screw rod which is located on the base. When in use, the fixing end of the jack abuts against the second cushion block.

[0009] The base is provided with an adjustment plate at the lower side away from one end of the fixing seat, and a second screw is installed on the adjustment plate and is threadedly connected thereto.

[0010] A reinforcing plate is arranged at the bottom of the base, and the reinforcing plate is fixedly connected to the adjusting plate.

[0011] The extension plate is installed on the connecting seat.

[0012] The extension plates are located on both sides of the connecting seat.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model fixes the top puller to the connecting screw hole next to the bolt to be removed of the oil tank by two connecting bolts, and then presses the flange or the tank cover of the oil tank body by the top pressing device to align the bolt holes on the side of the top puller, so as to facilitate the disassembly and assembly of the connecting bolts on the tank cover and the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the main structure of the first embodiment of the utility model.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the first embodiment of the utility model.

[0018] Figure 3 This is a schematic diagram of the main structure of the second embodiment of the utility model.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the second embodiment of the utility model.

[0020] Figure 5 This is a schematic diagram of the use status of the first embodiment of the utility model.

[0021] In the figure: connecting seat 1, base 11, fixing seat 12, reinforcing plate 13, extension plate 2, connecting bolt 3, pressing bolt 4, first cushion block 41. Jack 5, first screw rod 6, second cushion block 61, adjusting plate 7, second screw rod 8;

[0022] Box body 10, box cover 20. DETAILED DESCRIPTION

[0023] like Figure 1-5 As shown, a transformer oil tank top puller includes a connection base 1, which is L-shaped, an extension plate 2 is provided at one end of the connection base 1, and two through holes are provided on the extension plate 2, and the through holes are used to install the connection bolts 3, and a top pressing device is installed horizontally at the other end of the connection base 1. By installing the connection base 1 on the relevant connection bolts 3 of the oil tank, and then pressing the flange or the tank cover of the oil tank body by the top pressing device, the bolt holes on the side of the top puller are aligned, so as to facilitate the disassembly and assembly of the connection bolts on the tank cover and the tank body.

[0024] It should be noted that when the top puller of the present application is in use, if the connecting bolt cannot be removed, the top puller is installed at the bolt hole position adjacent to one side or both sides of the connecting bolt, see Figure 5 When installing the top puller, a smaller connecting bolt 3 can be used, for example, changing from M14 to M12, to facilitate the final removal of the connecting bolt 3.

[0025] See also Figure 1 , 2 , is the first embodiment of the present application, in which the pressing device is a pressing bolt 4, the connection seat 1 is provided with a threaded hole at one end where the pressing device is installed, the pressing bolt 4 is screwed into the threaded hole, and the threaded end of the pressing bolt 4 extends to one side of the connection bolt 3. By screwing the pressing bolt 4, the pressing of the box flange or the box cover is achieved.

[0026] Furthermore, a first cushion block 41 is rotatably mounted on the threaded end of the pressing bolt 4 to prevent the pressing bolt 4 from damaging the flange of the box body or the side of the box cover during pressing.

[0027] Specifically, the rotational connection between the first pad 41 and the pressure bolt 4 can be achieved in the following ways: for example, a blind hole is provided on the side of the first pad 41 close to the pressure bolt 4, and the pressure bolt 4 is abutted against the blind hole; or a through hole with a countersunk hole is provided on the first pad 41, and the screw is screwed with the pressure bolt 4 after passing through the through hole, and the head of the screw is located in the countersunk hole, and the head of the screw does not press the pressure bolt 4, so that the pressure bolt 4 can rotate on the screw.

[0028] See also Figure 3 , 4 , which is the second embodiment of the present application, in which the connecting seat 1 includes a base 11 and a fixing seat 12, the base 11 and the fixing seat 12 form an L-shaped connecting seat 1, and the pressing device is a jack 5, the jack 5 is located on the base 11, and when in use, the fixed end of the jack 5 abuts against the fixing seat 12. By operating the jack, the pressing of the box flange or the box cover is achieved.

[0029] Furthermore, a first screw rod 6 is screwed on the fixing seat 12 in parallel with the base 11, and a second cushion block 61 is installed at one end of the first screw rod 6 located on the base 11. When in use, the fixed end of the jack 5 abuts against the second cushion block 61. By rotating the first screw rod 6, the position of the second cushion block 61 is adjusted, thereby adjusting the position of the jack 5, so that jacks of different lengths can be used. Specifically, in Figure 4 In the embodiment, two fixing seats 12 and two first screw rods 6 are provided. In order to facilitate the rotation of the first screw rod 6, the first screw rod 6 and the second cushion block 61 are also rotationally connected. The rotational connection structure is the same as the rotational structure of the first cushion block 41, which will not be repeated here.

[0030] Furthermore, since the base 11 is extended long and will cause the base 11 to shake when the jack is operated, an adjustment plate 7 is provided on the lower side of the base 11 away from the end of the fixing seat 12, and a second screw 8 is screwed on the adjustment plate 7. When in use, the second screw 8 abuts against the box body 10.

[0031] Furthermore, a reinforcing plate 13 is welded to the bottom of the base 11 , and the reinforcing plate 13 is welded and fixed to the adjustment plate 7 to enhance the structural strength of the connecting base 1 .

[0032] The extension plate 2 can be an independent plate or can be integrated with the connection base 1. Figure 2 , the extension plate 2 is welded on the connection seat 1. Figure 4 The extension plates 2 are located on both sides of the connecting seat 1 and are integrated with the base 11 .

[0033] The use process or principle of the utility model is as follows:

[0034] During maintenance, when the bolts on the oil tank cannot be removed due to deformation of the wall of the transformer box body 10, especially the bolts between the box edge and the box cover 20, first fix the puller to the connecting screw holes next to the bolts to be removed from the oil tank through two connecting bolts 3.

[0035] Then use the pressing device to press the box cover, see Figure 5 When the box cover 20 is pushed by the top pressure device, the lower end of the connecting bolt 3 is pulled outward, so that the box body 10 is pulled outward, and the bolt can be easily removed when the bolt hole is aligned.

[0036] If the oil tank is severely deformed, the second embodiment is used to press the tank cover with a jack so that the tank body 10 is pulled outward.

[0037] After actual testing, the top puller of the present application can meet the needs of on-site disassembly and assembly.

Claims

1. A transformer oil tank top puller, characterized in that: The invention comprises a connecting seat (1), the connecting seat (1) is L-shaped, an extension plate (2) is arranged at one end of the connecting seat (1), two through holes are arranged on the extension plate (2), and the through holes are used to install the connecting bolts (3), and a top pressing device is installed horizontally at the other end of the connecting seat (1).

2. The transformer oil tank top puller according to claim 1, characterized in that: The pressing device is a pressing bolt (4), and the connecting seat (1) is provided with a threaded hole at one end where the pressing device is installed. The pressing bolt (4) is screwed into the threaded hole, and the threaded end of the pressing bolt (4) extends toward one side of the connecting bolt (3).

3. The transformer oil tank top puller according to claim 2, characterized in that: A first cushion block (41) is rotatably mounted on the threaded end of the pressing bolt (4).

4. The transformer oil tank top puller according to claim 1, characterized in that: The connecting seat (1) comprises a base (11) and a fixing seat (12), the base (11) and the fixing seat (12) forming an L-shaped connecting seat (1), the pressing device being a jack (5), the jack (5) being located on the base (11), and when in use, the fixing end of the jack (5) abuts against the fixing seat (12).

5. The transformer oil tank top puller according to claim 4, characterized in that: A first screw rod (6) is screwed onto the fixing seat (12) in parallel with the base (11), and a second cushion block (61) is mounted on one end of the first screw rod (6) located on the base (11). When in use, the fixing end of the jack (5) abuts against the second cushion block (61).

6. The transformer oil tank top puller according to claim 4, characterized in that: An adjustment plate (7) is provided on the lower side of the base (11) at one end away from the fixing seat (12), and a second screw rod (8) is screwed on the adjustment plate (7).

7. The transformer oil tank top puller according to claim 6, characterized in that: A reinforcing plate (13) is provided at the bottom of the base (11), and the reinforcing plate (13) is fixedly connected to the adjustment plate (7).

8. The transformer oil tank top puller according to any one of claims 1 to 7, characterized in that: The extension plate (2) is mounted on the connecting seat (1).

9. The transformer oil tank top puller according to any one of claims 1 to 7, characterized in that: The extension plates (2) are located on both sides of the connecting seat (1).

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