Auxiliary welding tool for leading-out support plate of on-load tap-changer

Abstract

The utility model provides an on-load tap-changer leading-out support plate auxiliary welding tool which comprises a tool plate, the tool plate is provided with a first bolt hole used for being connected with a leading-out support plate, the tool plate is provided with a tool block used for simulating a lever, and the tool block is arranged between the tool plate and the leading-out support plate. In the embodiment of the utility model, the size of the tool block is the same as that of the lever, and the tool plate is fixedly connected with the leading-out support plate, so that the position of the tool block on the leading-out support plate can be fixed, the position of the lever on the leading-out support plate is further fixed, and then the lever mounting block for fixing the lever is welded on the leading-out support plate. The lever mounting block can be welded more conveniently and more precisely, subsequent lever mounting is easier, and the dimensional precision is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of on-load tap changer installation, in particular to an auxiliary welding tool for a lead-out support plate of an on-load tap changer. Background Art

[0002] An on-load tap changer is a voltage regulating device that is suitable for operating under transformer excitation or load and is used to change the tap connection position of a transformer winding. Its basic principle is to switch between taps in the transformer winding without interrupting the load current, thereby changing the number of turns of the winding, that is, the voltage ratio of the transformer, and ultimately achieving the purpose of voltage regulation.

[0003] The lead-out support plate of the on-load tap changer is the main carrier for installing the lead-out contacts and levers, among which the installation of the lever is particularly important. Due to the large dimensional error between the welded parts of the lead-out support plate, it is difficult to install the lever, and the gap between the lever and the lead-out support plate is too large, causing the lever to shake left and right, resulting in inaccurate test data and affecting the overall performance of the product. Utility Model Content

[0004] The embodiment of the utility model provides an auxiliary welding tool for an on-load tap changer lead-out support plate, which can improve the technical problems of difficult lever installation and large gap in the welding process of the on-load tap changer lead-out support plate.

[0005] An embodiment of the utility model provides an auxiliary welding tool for an on-load tap changer lead-out support plate, comprising a tooling plate, on which a first bolt hole for connecting with the lead-out support plate is provided, on which a tooling block for simulating a lever is provided, and the tooling block is arranged between the tooling plate and the lead-out support plate.

[0006] Beneficial effects of the embodiments of the utility model: In the embodiments of the utility model, the size of the tooling block is the same as the size of the lever. By fixing the tooling plate to the lead-out support plate, the position of the tooling block on the lead-out support plate can be fixed, thereby achieving the position of the fixed lever on the lead-out support plate. Then, the lever mounting block for fixing the lever is welded on the lead-out support plate, which can make the welding of the lever mounting block more convenient and more accurate, and make the subsequent lever installation easier and more accurate in size. The tooling plate and the lead-out support plate are fixedly connected by bolts, which can facilitate operation.

[0007] In one embodiment, a connecting block is provided on the tooling block, and a connecting block installation cavity matching the connecting block is provided on the tooling plate, the connecting block installation cavity passes through the tooling plate from the side where the tooling plate is connected to the tooling block to the side of the tooling plate facing away from the tooling block, and the connecting block is arranged in the connecting block installation cavity.

[0008] Beneficial effects of the embodiments of the utility model: In the embodiments of the utility model, by arranging a connecting block installation cavity on the tooling plate, the tooling block can be better positioned, and the connection between the tooling block and the tooling plate can be made more stable and more precise; by making the connecting block installation cavity pass through the tooling plate, the welding of the connecting block and the tooling plate can be made more convenient and firm.

[0009] In one embodiment, a lever mounting block accommodating space for fixing the lever mounting block is provided on the tooling plate, and the lever mounting block accommodating space is provided on both sides of the tooling block.

[0010] Beneficial effects of the embodiments of the utility model: In the embodiments of the utility model, by providing a lever mounting block accommodation space in the areas on both sides of the tooling block on the tooling plate, the lever mounting block can be better positioned, and the installation accuracy of the lever mounting block on the lead-out support plate can be improved. The lever mounting block accommodation space can be an open space or a cavity structure matching the lever mounting block.

[0011] In one embodiment, the lever mounting block accommodating space includes a concave structure, and the lever mounting block abuts against a bottom edge of the concave structure.

[0012] Beneficial effects of the embodiments of the utility model: In the embodiments of the utility model, by providing a concave structure in the accommodating space of the lever mounting block, the lever mounting block can be provided in the concave structure, so that the lever mounting block can be better positioned.

[0013] In one embodiment, the tooling plate is hollowed out in the middle.

[0014] Beneficial effects of the embodiments of the utility model: In the embodiments of the utility model, the weight of the tooling plate can be reduced by hollowing out the middle part of the tooling plate, thereby facilitating fixation.

[0015] In one embodiment, the lever mounting block accommodating space is respectively arranged in the hollow area in the middle of the tooling plate and on the outer side of the tooling plate.

[0016] Beneficial effects of the embodiments of the utility model: In the embodiments of the utility model, by arranging the lever mounting block accommodating space in the middle hollow area of ​​the tooling plate and the outer side of the tooling plate, the processing of the tooling plate and the formation of the lever mounting block accommodating space can be facilitated.

[0017] In one embodiment, the tooling block is provided with a second bolt hole for connecting with the lever mounting block.

[0018] Beneficial effects of the embodiments of the utility model: In the embodiments of the utility model, the tooling block and the lever mounting block are connected by bolts, which can facilitate the positioning and welding of the lever mounting block.

[0019] In one embodiment, a plurality of first bolt holes are provided.

[0020] Beneficial effects of the embodiments of the utility model: In the embodiments of the utility model, the plurality of first bolt holes can enable the tooling plate to be tightly connected to the lead-out support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a three-dimensional schematic diagram of an auxiliary welding tool for the lead-out support plate of an on-load tap changer provided in an embodiment of the utility model;

[0023] Figure 2 It is a top view of a tooling plate provided in an embodiment of the utility model;

[0024] Figure 3 It is a side view of a tooling block provided in an embodiment of the utility model;

[0025] Figure 4 is a cross-sectional view of a tooling block provided in an embodiment of the utility model;

[0026] Figure 5 This is an application scenario diagram of the auxiliary welding tooling for the lead-out support plate of the on-load tap changer provided in an embodiment of the utility model.

[0027] Description of the drawings: tooling plate 1, connecting block mounting cavity 11, concave structure 12, first bolt hole 13, tooling block 2, connecting block 21, second bolt hole 22, lead-out support plate 3, lever mounting block 4. DETAILED DESCRIPTION

[0028] 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, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0029] See also Figures 1 to 4 The embodiment of the present application provides an auxiliary welding tool for an on-load tap changer lead-out support plate, including a tool plate 1, which is provided with three first bolt holes 13 for connecting with the lead-out support plate 3. A tool block 2 for simulating a lever is provided on the tool plate 1. A connecting block 21 is provided on the tool block 2 by welding or integral molding. A connecting block installation cavity 11 matching the connecting block 21 is provided on the tool plate 1, and the connecting block installation cavity 11 passes through the tool plate 1 from the side where the tool plate 1 is connected to the tool block 2 to the side of the tool plate 1 facing away from the tool block 2. The connecting block 21 is arranged in the connecting block installation cavity 11 by welding, so as to realize the fixed connection between the tool block 2 and the tool plate 1.

[0030] The tooling block 2 is provided with a second bolt hole 22 for connecting with the lever mounting block 3 , so that the tooling block 2 and the lever mounting block 4 can be bolted together.

[0031] The middle of the tooling plate 1 is hollowed out, and a lever mounting block accommodating space for fixing the lever mounting block 4 is formed in the hollowed-out area in the middle of the tooling plate 1 and on the outside of the tooling plate 1. The lever mounting block accommodating space is located on both sides of the tooling block 2. The lever mounting block accommodating space includes a concave structure 12, and the lever mounting block 4 abuts against the bottom edge of the concave structure 12, so that the lever mounting block 4 can be positioned.

[0032] When in use, the tooling plate 1 is fixedly connected to the lead-out support plate 3 by bolts, and the tooling block 2 is placed between the tooling plate 1 and the lead-out support plate 3 .

[0033] See also Figure 5When in use, first fix the tooling plate 1 to the lead-out support plate 3 with bolts, and place the tooling block 2 between the tooling plate 1 and the lead-out support plate 3. At the same time, the lever mounting block 4 is located on both sides of the tooling block 2 and positioned by the concave structure 12. Then, connect the lever mounting block 4 and the tooling block 2 together with bolts, and then tighten them with nuts to reduce the gap. Finally, weld the lever mounting block 4 to the lead-out support plate 3.

[0034] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. An auxiliary welding tool for lead-out support plate of on-load tap changer, characterized in that: It comprises a tooling plate (1), the tooling plate (1) being provided with a first bolt hole (13) for connecting to a lead-out support plate (3), and the tooling plate (1) being provided with a tooling block (2) for simulating a lever.

2. The auxiliary welding tool for the lead-out support plate of the on-load tap changer according to claim 1 is characterized in that: The tooling block (2) is provided with a connection block (21), and the tooling plate (1) is provided with a connection block installation cavity (11) matching the connection block (21); the connection block installation cavity (11) extends from a side where the tooling plate (1) is connected to the tooling block (2) through the tooling plate (1) to a side of the tooling plate (1) facing away from the tooling block (2); and the connection block (21) is arranged in the connection block installation cavity (11).

3. The auxiliary welding tool for the lead-out support plate of the on-load tap changer according to claim 1 or 2, characterized in that: The tooling plate (1) is provided with a lever mounting block accommodating space for fixing the lever mounting block (4), and the lever mounting block accommodating space is arranged on both sides of the tooling block (2).

4. The auxiliary welding tool for the lead-out support plate of the on-load tap changer according to claim 3 is characterized in that: The lever mounting block accommodating space comprises a concave structure (12), and the lever mounting block (4) abuts against the bottom edge of the concave structure (12).

5. The auxiliary welding tool for lead-out support plate of on-load tap changer according to claim 3 is characterized in that: The tooling plate (1) has a hollow middle portion.

6. The auxiliary welding tool for the lead-out support plate of the on-load tap changer according to claim 5 is characterized in that: The lever mounting block accommodating space is respectively arranged in the hollowed-out area in the middle of the tooling plate (1) and on the outside of the tooling plate (1).

7. The auxiliary welding tool for the lead-out support plate of the on-load tap changer according to claim 3 is characterized in that: The tooling block (2) is provided with a second bolt hole (22) for connecting with the lever mounting block 4.

8. The auxiliary welding tool for lead-out support plate of on-load tap changer according to claim 1 is characterized in that: A plurality of the first bolt holes (13) are provided.

Images