Transformer grounding copper bar fixing device

Abstract

The utility model discloses a transformer grounding copper bar fixing device, which comprises an insulator in bolt connection with a transformer box body, the upper part of the insulator is fixedly connected with a bottom plate, the bottom plate is provided with placing grooves, copper bars are arranged in the placing grooves, the upper parts of the copper bars are provided with pressing plates, and the bottom plate is provided with small grooves below each placing groove. A small spring is connected in the small groove in an embedded mode, the top of the small spring is connected with a copper bar, and a lead capable of penetrating out of the pressing plate is arranged above the copper bar; a small groove is formed below a placement groove, a small spring is embedded in the small groove, the top of the small spring is connected with a copper bar, after the copper bar is pressed on a bottom plate through a pressing plate, the copper bar and the bottom plate form a connection relation, conductive grounding is facilitated, the small spring connected between the bottom plate and the copper bar can make up for certain deformation of the copper bar, and the copper bar is prevented from being damaged. Therefore, the copper bar and the bottom plate are always connected, the problem of grounding failure caused by separation of the copper bar from the bottom plate in the contraction process is avoided, and the normal grounding quality is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of grounding, and in particular relates to a transformer grounding copper bar fixing device. Background Art

[0002] The transformer core and larger metal parts must be reliably grounded. At present, the core grounding is led out by a bushing, and the outside is grounded by a copper bar with a cross-sectional area of ​​not less than 120 square millimeters. Regarding the fixing of the copper bar, in the prior art, after searching, the utility model patent with the Chinese patent publication number CN213242202U discloses a transformer core grounding copper bar fixing device, such as Figure 1 As shown, it mainly includes an insulator a, the lower part of which is connected to the transformer box b; it also includes a bottom plate c, which is located on the insulator a and connected to the insulator a, and a receiving groove d is provided on the bottom plate c, in which a grounding copper bar e is provided, and a pressing plate f can press the copper bar e onto the insulator a.

[0003] In the prior art, the transformer grounding copper bar fixing device similar to the above technical solution, during use, although the thermal expansion and contraction of the copper bar prevents the insulator from being pulled off, the copper bar is easily separated from the bottom plate during the process of shrinking and shrinking after thermal expansion, thereby causing grounding failure. Utility Model Content

[0004] In view of the shortcomings and defects in the prior art, the purpose of the utility model is to provide a transformer grounding copper bar fixing device, which solves the problem that the copper bar is thermally expanded and contracted in the transformer grounding copper bar fixing device in the prior art, so that the insulator will not be pulled off, but the copper bar is easily separated from the bottom plate during the process of shrinking and shrinking after thermal expansion, thereby causing grounding failure.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a transformer grounding copper bar fixing device, which mainly includes an insulator connected to the transformer box with bolts, the upper part of the insulator is fixedly connected to a base plate, a placement groove is provided on the base plate, a copper bar is provided in the placement groove, a pressure plate is provided on the upper part of the copper bar for pressing it, the pressure plate is fixed to the base plate by bolts, two small grooves are provided on the base plate below each placement groove, a small spring made of conductive material is embedded in the small groove, the top of the small spring is connected to the copper bar, and a lead that can pass through the pressure plate is provided above the copper bar.

[0006] As a further improvement of the utility model, the top of the small spring is connected to the copper bar by bolting with an iron wire.

[0007] As a further improvement of the utility model, an embedding groove is provided on the transformer box, and a protruding block corresponding to the embedding groove is provided at the bottom of the insulator, and the protruding block is embedded in the embedding groove.

[0008] As a further improvement of the utility model, a second groove is arranged at the lower part of the embedded groove, a second spring is connected to the second groove, and the top of the second spring is pressed against the bottom of the protruding block.

[0009] As a further improvement of the utility model, two ends of the insulator are connected with hanging plates, and the hanging plates are connected to the transformer box through bolts.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] 1. Two small grooves are provided under each placement slot on the bottom plate, a small spring made of conductive material is embedded in the small groove, the top of the small spring is connected to the copper bar, and a lead that can pass through the pressure plate is provided above the copper bar. After the copper bar is pressed onto the bottom plate by the pressure plate, the copper bar and the bottom plate form a connection relationship, which is convenient for conductive grounding. As the copper bar expands and contracts with heat during use, the small spring connected between the bottom plate and the copper bar can compensate for a certain amount of deformation of the copper bar, so that there is always a connection between the copper bar and the bottom plate, avoiding the problem of grounding failure caused by the copper bar detaching from the bottom plate during contraction, thereby ensuring normal grounding quality.

[0012] 2. By connecting the top of the small spring to the copper busbar through an iron wire, it is easy to disassemble and will not be disconnected during the deformation of the copper busbar, thus ensuring the grounding quality.

[0013] 3. An embedding groove is provided on the transformer box, a protruding block corresponding to the embedding groove is provided at the bottom of the insulator, and the protruding block is embedded in the embedding groove, thereby improving the connection firmness between the transformer box and the insulator.

[0014] 4. By providing a second groove at the bottom of the embedded groove, a second spring is connected to the second groove, and the top of the second spring is against the bottom of the protruding block, the insulator can be connected to the transformer box through the retractable second spring, so as to prevent the bottom of the insulator from being separated from the transformer box during deformation or vibration of the transformer box, so that the insulator loses contact with the transformer box.

[0015] 5. By connecting hanging plates at both ends of the insulator, the hanging plates are connected to the transformer box through bolts, which facilitates the installation and fixation of the insulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings:

[0017] Figure 1 It is a structural schematic diagram of the prior art;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model;

[0019] Figure 3 for Figure 2 A magnified view at point A;

[0020] Figure 4 for Figure 2 Enlarged view at B;

[0021] In the figure: 1. insulator; 2. bottom plate; 3. placement groove; 4. copper busbar; 5. pressure plate; 6. small groove; 7. small spring; 8. lead wire; 9. embedded groove; 10. protruding block; 11. second groove; 12. second spring; 13. hanging plate; 14. transformer box. DETAILED DESCRIPTION

[0022] The following is combined with Figure 2-4 The utility model is further described in detail. For a clearer illustration, only the structure related to the utility model is shown in the figure.

[0023] For the convenience of description, the coordinate system is defined as Figure 2 As shown, the left-right direction is the horizontal direction, the front-back direction is the longitudinal direction, and the up-down direction is the vertical direction.

[0024] The utility model discloses a transformer grounding copper bar fixing device. Figure 2 The invention mainly comprises an insulator 1 connected to a transformer box 14 by bolts. Specifically, the two ends of the insulator 1 are connected with hanging plates 13, and the hanging plates 13 are connected to the transformer box 14 by bolts, so as to facilitate the installation and fixation of the insulator 1. The upper part of the insulator 1 is fixedly connected with a bottom plate 2, and a placement groove 3 is provided on the bottom plate 2. A copper bar 4 is arranged in the placement groove 3. A pressing plate 5 is arranged on the upper part of the copper bar 4 to press it. The pressing plate 5 is fixed to the bottom plate 2 by bolts. Figure 2 and Figure 4 As shown, two small grooves 6 are provided on the bottom plate 2 below each placement slot 3, and a small spring 7 made of conductive material is embedded in the small groove 6. The top of the small spring 7 is connected to the copper bus 4. Specifically, the top of the small spring 7 can be connected to the copper bus 4 by a wire. For example, a hole can be punched on the copper bus 4, and one end of the wire is passed through the hole on the copper bus 4, and the other end is connected to the copper bus 4, which is convenient for disassembly. During the deformation of the copper bus 4, the connection relationship will not be lost, thereby ensuring the grounding quality. A lead 8 that can pass through the pressure plate 5 is provided above the copper bus 4.

[0025] like Figure 2 and Figure 3As shown, an embedding groove 9 is provided on the transformer box 14, and a protruding block 10 corresponding to the embedding groove 9 is provided at the bottom of the insulator 1. The protruding block 10 is embedded in the embedding groove 9 to improve the connection firmness between the transformer box 14 and the insulator 1. Further, a second groove 11 can be provided below the embedding groove 9, and a second spring 12 is connected to the second groove 11. The top of the second spring 12 is pressed against the bottom of the protruding block 10. The insulator 1 can be connected to the transformer box 14 through the retractable second spring 12, so as to prevent the bottom of the insulator 1 from being separated from the transformer box 14 during the deformation or vibration of the transformer box 14, so that the insulator 1 loses contact with the transformer box 14.

[0026] The utility model provides two small grooves 6 on the bottom plate 2 below each placement slot 3, wherein a small spring 7 made of a conductive material is embedded in the small groove 6, the top of the small spring 7 is connected to the copper bar 4, and a lead 8 capable of passing through a pressing plate 5 is provided above the copper bar 4. After the copper bar 4 is pressed onto the bottom plate 2 by the pressing plate 5, the copper bar 4 forms a connection relationship with the bottom plate 2, which is convenient for conductive grounding. During the use, during the process of thermal expansion and contraction of the copper bar 4, the small spring 7 connected between the bottom plate 2 and the copper bar 4 can compensate for a certain amount of deformation of the copper bar 4, so that there is always a connection relationship between the copper bar 4 and the bottom plate 2, thereby avoiding the problem of grounding failure caused by the copper bar 4 being separated from the bottom plate 2 during the contraction process, thereby ensuring normal grounding quality.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. It should be understood that the specific implementation methods described herein are only used to understand the present utility model, and are not used to limit the present utility model. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present utility model.

Claims

1. A transformer grounding copper bar fixing device, comprising an insulator connected to a transformer box with bolts, a bottom plate fixedly connected to the top of the insulator, a placement groove provided on the bottom plate, a copper bar arranged in the placement groove, a pressing plate capable of pressing the copper bar arranged on the top of the copper bar, the pressing plate being fixed to the bottom plate by bolts, characterized in that: Two small grooves are arranged on the bottom plate below each placement slot, a small spring made of conductive material is embedded in the small groove, the top of the small spring is connected to the copper bar, and a lead wire that can pass through the pressure plate is arranged above the copper bar.

2. A transformer grounding copper bar fixing device according to claim 1, characterized in that: The top of the small spring is bolted to the copper bar through an iron wire.

3. A transformer grounding copper bar fixing device according to claim 1, characterized in that: An embedding groove is arranged on the transformer box body, a protruding block corresponding to the embedding groove is arranged at the bottom of the insulator, and the protruding block is embedded in the embedding groove.

4. A transformer grounding copper bar fixing device according to claim 3, characterized in that: A second groove is arranged at the lower part of the embedded groove, a second spring is connected in the second groove, and the top of the second spring presses against the bottom of the protruding block.

5. A transformer grounding copper bar fixing device according to any one of claims 1 to 4, characterized in that: Both ends of the insulator are connected with hanging plates, and the hanging plates are connected to the transformer box through bolts.

Images