Welding tool for preventing oxidation of tin coating of conducting rod

Abstract

The utility model provides a welding tool for preventing oxidation of a tin coating of a conducting rod, which comprises a water tank, the conducting rod, a paper-wrapped round copper wire, a first clamping mechanism, a second clamping mechanism and an electric push rod, and the top end of the conducting rod is provided with a welding groove; the paper-wrapped round copper wire is composed of a paper-wrapped insulating layer and a round copper wire conductor, and the first clamping mechanism is used for clamping the upper end of the conducting rod, so that the middle lower end of the conducting rod is immersed in clear water; the second clamping mechanism is used for clamping the upper end of the paper-wrapped round copper wire; and the electric push rod is used for driving the second clamping mechanism to move up and down, so that the paper-wrapped round copper wire which is not wrapped by the paper-wrapped insulating layer extends into the welding groove. According to the utility model, the electric push rod can conveniently drive the bottom end of the paper-covered round copper wire to extend into the welding groove of the conducting rod, so that a worker can conveniently weld the conducting rod and the paper-covered round copper wire together through an oxygen acetylene welding gun; and blackening of the conducting rod exposed out of the high-voltage porcelain bushing in the welding process can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of transformer conductive rod welding technology, specifically a welding fixture for preventing oxidation of the tin plating layer on conductive rods. Background Technology

[0002] In the high-voltage lead fittings of oil-immersed transformers, the lead conductor rods are mostly of a split structure. Before transformer installation and operation, manual welding is required to fix the lead and conductor rod together using an oxy-acetylene torch. However, when using an oxy-acetylene torch, the welding flame temperature is typically between 3100 and 3300°C, while the tin plating on the surface of the conductor rod oxidizes and turns black at 120°C. This results in most of the tin plating on the conductor rod surface turning black. After the welded lead conductor rod is assembled on the transformer, the exposed conductor rod outside the high-voltage porcelain bushing is unsightly, and the conductivity of the blackened tin plating decreases. Therefore, we propose a welding fixture to prevent oxidation of the tin plating on the conductor rod, thus avoiding the blackening of the conductor rod exposed outside the high-voltage porcelain bushing. Utility Model Content

[0003] The purpose of this invention is to improve and innovate upon the shortcomings and problems existing in the background technology, and to provide a welding fixture for preventing oxidation of the tin plating layer of a conductive rod.

[0004] A welding fixture for preventing oxidation of the tin plating layer on a conductive rod, comprising:

[0005] A water tank, wherein the water tank is filled with clean water;

[0006] A conductive rod, wherein a welding groove is provided at the top end of the conductive rod;

[0007] Paper-insulated round copper wire, wherein the paper-insulated round copper wire is composed of a paper-insulating layer and a round copper wire conductor, and the round copper wire conductor is exposed at a certain distance from the paper-insulating layer;

[0008] A first clamping mechanism is used to clamp the upper end of the conductive rod so that the middle and lower ends of the conductive rod are immersed in clean water.

[0009] The second clamping mechanism is used to clamp the upper end of the paper-wrapped round copper wire;

[0010] An electric push rod is used to drive the second clamping mechanism to move up and down, so that the paper-insulated round copper wire that is not wrapped by the paper insulation layer extends into the welding groove.

[0011] A further embodiment is that the first clamping mechanism includes a first lead screw, a first slide rod, and two clamping steel plates respectively disposed on both sides of the water tank. Slider blocks are fixedly connected to both ends of the two clamping steel plates. The first lead screw is driven to rotate by a rotary motor. The middle part of the first lead screw is threadedly connected to the slider corresponding to one end of the two clamping steel plates. The middle part of the first slide rod is slidably engaged with the slider corresponding to the other end of the two clamping steel plates.

[0012] A further embodiment is that the second clamping mechanism includes two first support plates arranged opposite to each other, a second lead screw rotatably connected to the two first support plates, a second slide rod fixedly connected to the two first support plates, and two fixing clamps provided between the two first support plates. Both fixing clamps are threadedly connected to the second lead screw and slidably engaged with the second slide rod.

[0013] A further embodiment is that the output end of the electric push rod is fixedly connected to a lifting seat, and the first support plate is installed on the lifting seat.

[0014] A further option is to provide a positioning hole on the lifting base that is compatible with the paper-wrapped round copper wire.

[0015] A further option is to provide a drain pipe at the bottom of the water tank, and to provide a drain valve on the drain pipe.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting a first clamping mechanism on the water tank, the first clamping mechanism clamps the upper end of the conductive rod, ensuring that the conductive rod will not shake or shift during the welding process, while ensuring that most of the conductive rod is immersed in clean water; at the same time, the second clamping mechanism clamps the paper-insulated round copper wire directly below the conductive rod; this facilitates the electric push rod to drive the bottom end of the paper-insulated round copper wire into the welding groove of the conductive rod, thereby facilitating the worker to weld the conductive rod and the paper-insulated round copper wire together using an oxy-acetylene welding gun. Since most of the conductive rod is immersed in clean water, the part of the conductive rod in the water will not oxidize and turn black during the welding process, which can effectively prevent the conductive rod exposed outside the high-voltage porcelain sleeve from blackening during the welding process, thus improving the aesthetics of the conductive rod. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of a welding fixture for preventing oxidation of the tin plating layer on a conductive rod, provided in an embodiment of this utility model;

[0019] Figure 2 Provided for the embodiments of this utility model Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0020] Figure 3 Provided for the embodiments of this utility model Figure 1 A magnified view of the structure at point A in the middle;

[0021] Figure 4 A top view of the second clamping mechanism provided in an embodiment of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the conductive rod provided in an embodiment of the present utility model.

[0023] Reference numerals: 1. Water tank; 2. First clamping mechanism; 201. Rotary motor; 202. First lead screw; 203. Slider; 204. First sliding rod; 205. Clamping steel plate; 3. Second clamping mechanism; 301. Second lead screw; 302. First support plate; 303. Fixing clamp; 304. Second sliding rod; 4. Conductive rod; 401. Welding groove; 5. Paper-insulated round copper wire; 501. Round copper wire conductor; 6. Drainage pipe; 7. Second support plate; 8. Electric push rod; 9. Lifting seat; 901. Positioning hole. Detailed Implementation

[0024] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Please see Figures 1-5 This utility model provides a welding fixture for preventing oxidation of the tin plating layer on a conductive rod, comprising:

[0028] Water tank 1, which is filled with clean water, has a drain pipe 6 at the bottom of the water tank 1, and a drain valve on the drain pipe 6. Opening the drain valve on the drain pipe 6 can drain the clean water in the water tank 1.

[0029] The conductive rod 4 has a welding groove 401 at its top end, and the end of the conductive rod 4 away from the welding groove 401 is immersed in the clean water in the water tank 1.

[0030] Paper-insulated round copper wire 5, the paper-insulated round copper wire 5 is composed of a paper-insulated insulating layer and a round copper wire conductor 501. One end of the round copper wire conductor 501 protrudes from the paper-insulated insulating layer by a certain distance, and its length is generally 2cm. This section of the round copper wire conductor 501 is used to extend into the welding groove 401 and weld it together with the conductive rod 4 by an oxy-acetylene welding gun.

[0031] The first clamping mechanism 2 is used to clamp the upper end of the conductive rod 4 to ensure that the conductive rod 4 will not shake or shift during the welding process, while ensuring that most of the conductive rod 4 is immersed in clean water.

[0032] The second clamping mechanism 3 is used to clamp the upper end of the paper-wrapped round copper wire 5;

[0033] An electric push rod 8 is installed on the top of a second support plate 7, which is L-shaped and has its bottom end installed on a water tank 1. The electric push rod 8 is used to drive the second clamping mechanism 3 to move up and down so that the paper-insulated round copper wire 5, which is not wrapped by the paper insulation layer, extends into the welding groove 401.

[0034] Specifically, the first clamping mechanism 2 includes a first lead screw 202, a first slide rod 204, and two clamping steel plates 205 respectively disposed on both sides of the water tank 1. Slider blocks 203 are fixedly connected to both ends of the two clamping steel plates 205. The first lead screw 202 is driven to rotate by a rotary motor 201, which is mounted on one end of the water tank 1 via a fixing plate. The middle part of the first lead screw 202 is threadedly connected to the corresponding slider 203 at one end of the two clamping steel plates 205, with opposite spiral directions, thereby causing the two clamping steel plates 205 to move closer or further apart. The middle part of the first slide rod 204 is slidably engaged with the corresponding slider 203 at the other end of the two clamping steel plates 205, and the first slide rod 204 serves as a guide.

[0035] Preferably, the clamping steel plate 205 is provided with an indicator arrow to indicate the specific position where the conductive rod 4 should be clamped. Before operation, the worker holds the conductive rod 4 and carefully aligns it with the position indicated by the indicator arrow. Then, the worker starts the rotary motor 201. As the rotary motor 201 rotates, it drives the two clamping steel plates 205 to move closer together and clamp the conductive rod 4, ensuring that it corresponds to the paper-insulated round copper wire 5 in the subsequent welding operation and remains stable during the welding process.

[0036] It should be noted that this application uses clamping steel plates 205 that are close to each other to clamp the conductive rod 4, so that the first clamping mechanism 2 of this embodiment can clamp conductive rods 4 of different diameters, and the device has strong applicability.

[0037] Furthermore, the output end of the electric push rod 8 is fixedly connected to a lifting seat 9. The second clamping mechanism 3 includes two opposing first support plates 302, which are mounted on the lifting seat 9. A second lead screw 301 is rotatably connected to the two first support plates 302, and an adjustment knob is provided at the end of the second lead screw 301. A second slide rod 304 is fixedly connected to the two first support plates 302, and two fixing clamps 303 are provided between the two first support plates 302. Both fixing clamps 303 are threadedly connected to the second lead screw 301 and slidably engaged with the second slide rod 304. After rotating the adjustment knob, the two fixing clamps 303 can be moved closer to each other, thereby clamping the upper end of the paper-insulated round copper wire 5. At this time, the electric push rod 8 then drives the round copper wire conductor 501 at the bottom of the paper-insulated round copper wire 5 to extend into the welding groove 401 of the conductive rod 4, so that the worker can fill the welding groove 401 with an oxy-acetylene welding gun, thereby welding the conductive rod 4 and the paper-insulated round copper wire 5 together. Since most of the conductive rod 4 is immersed in clean water during the welding process, the part of the conductive rod 4 in the water will not oxidize and turn black during the welding process, which effectively avoids the conductive rod 4 exposed outside the high voltage porcelain bushing from turning black during the welding process, which is conducive to improving the aesthetics of the conductive rod 4 assembled on the transformer.

[0038] Preferably, the lifting seat 9 has a positioning hole 901 that matches the paper-insulated round copper wire 5. Before operation, the worker will first insert the upper end of the paper-insulated round copper wire 5 into the positioning hole 901 to position the paper-insulated round copper wire 5. Then, the worker will turn the adjustment knob corresponding to the second lead screw 301 to drive the two fixing clamps 303 to move closer to each other and clamp the paper-insulated round copper wire 5, ensuring its stability in the subsequent welding process.

[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0041] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The reference to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily indicate the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application. Although embodiments of this utility model have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A welding fixture for preventing oxidation of the tin plating layer on a conductive rod, characterized in that, include: Water tank (1), the water tank (1) is filled with clean water; The conductive rod (4) has a welding groove (401) at its top end. Paper-insulated round copper wire (5), the paper-insulated round copper wire (5) is composed of a paper-insulated layer and a round copper wire conductor (501), the round copper wire conductor (501) is exposed at a certain distance from the paper-insulated layer; The first clamping mechanism (2) is used to clamp the upper end of the conductive rod (4) so ​​that the middle and lower ends of the conductive rod (4) are immersed in clean water. The second clamping mechanism (3) is used to clamp the upper end of the paper-wrapped round copper wire (5); An electric push rod (8) is used to drive the second clamping mechanism (3) to move up and down so that the paper-insulated round copper wire (5) not wrapped by the paper insulation layer extends into the welding groove (401).

2. The welding fixture for preventing oxidation of the tin plating layer on a conductive rod according to claim 1, characterized in that: The first clamping mechanism (2) includes a first lead screw (202), a first slide rod (204) and two clamping steel plates (205) respectively disposed on both sides of the water tank (1). Sliders (203) are fixedly connected to both ends of the two clamping steel plates (205). The first lead screw (202) is driven to rotate by a rotary motor (201). The middle part of the first lead screw (202) is threadedly connected to the sliders (203) corresponding to one end of the two clamping steel plates (205). The middle part of the first slide rod (204) is slidably engaged with the sliders (203) corresponding to the other end of the two clamping steel plates (205).

3. The welding fixture for preventing oxidation of the tin plating layer on a conductive rod according to claim 1, characterized in that: The second clamping mechanism (3) includes two first support plates (302) arranged opposite to each other. A second lead screw (301) is rotatably connected to the two first support plates (302). A second slide rod (304) is fixedly connected to the two first support plates (302). Two fixing clips (303) are provided between the two first support plates (302). Both fixing clips (303) are threadedly connected to the second lead screw (301) and slidably engaged with the second slide rod (304).

4. The welding fixture for preventing oxidation of the tin plating layer on a conductive rod according to claim 3, characterized in that: The output end of the electric push rod (8) is fixedly connected to the lifting seat (9), and the first support plate (302) is installed on the lifting seat (9).

5. The welding fixture for preventing oxidation of the tin plating layer on a conductive rod according to claim 4, characterized in that: The lifting seat (9) is provided with a positioning hole (901) that is compatible with the paper-wrapped round copper wire (5).

6. The welding fixture for preventing oxidation of the tin plating layer on a conductive rod according to claim 1, characterized in that: The bottom of the water tank (1) is provided with a drain pipe (6), and a drain valve is provided on the drain pipe (6).

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