Transformer core grounding lead structure

Abstract

The utility model discloses a transformer core ground lead structure relates to transformer safety protection technical field, including ground lead main part, one end of ground lead main part is rotatively connected with second adapter, the other end of ground lead main part rotatively connected with first adapter, the outer wall of ground lead main part is sleeved with second limiting mechanism and first limiting mechanism, the utility model discloses a first limiting mechanism and second limiting mechanism form double limit on transformer base and shell respectively, and the stability of the ground passage is improved through the threaded connection structure of screw rod and positioning block that is arranged in the first limiting mechanism, and the position of first limiting end is adjusted in combination with extension rod, and the rotation adaptability of the bending plate is matched, and the accurate adjustment of the horizontal position of the lead is realized.

Description

Technical Field

[0001] This utility model relates to the field of transformer safety protection technology, and in particular to a transformer core grounding lead structure. Background Technology

[0002] The transformer core grounding lead is a key component to ensure the safe operation of the transformer. It needs to stably connect the core and the grounding electrode to prevent partial discharge caused by floating potential in the core, which could lead to insulation damage and other faults.

[0003] However, in existing technologies, transformer core grounding leads mostly adopt a fixed structure design. The grounding lead body, connector, and limiting mechanism lack flexibility and adaptability. When there are slight deviations in the transformer installation environment, the grounding lead is difficult to connect accurately, which can easily lead to pulling and deformation. At the same time, the current limiting mechanisms are mostly integrated fixed structures, which cannot be precisely adjusted according to the actual installation requirements of the lead. During long-term operation, the clamping force of the limiting mechanism on the grounding lead is prone to loosening due to transformer vibration, resulting in lead displacement, which damages the stability of the grounding path and increases the safety hazards of transformer operation. Utility Model Content

[0004] The purpose of this utility model is to solve the problems of poor adaptability of the transformer core grounding lead, difficulty in coping with installation environment deviations, inability of the limiting mechanism to be precisely adjusted, and easy displacement of the lead due to vibration during long-term operation in the existing technology. Therefore, a transformer core grounding lead structure is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a transformer core grounding lead structure, comprising a grounding lead body, one end of which is rotatably connected to a second connector, and the other end of which is rotatably connected to a first connector. A second limiting mechanism and a first limiting mechanism are sleeved on the outer wall of the grounding lead body. The first limiting mechanism is disposed on the transformer base, and the second limiting mechanism is disposed on the transformer shell. The first limiting mechanism includes a positioning block, a bending plate, and a first limiting end. One end of the first limiting end is fixedly connected to an extension rod. The bending plate is rotatably installed at the junction of the first limiting end and the extension rod. The positioning block is welded to one side of the transformer base, and the other end of the first limiting end is fixedly connected to a threaded rod, which is threadedly connected inside the positioning block.

[0006] Preferably, the second limiting mechanism includes a base and a hollow cylinder. The bottom of the base is bolted to the transformer housing, and the hollow cylinder is bolted to the top of the base.

[0007] Preferably, a rotating ring is rotatably mounted on the outer wall of the hollow cylinder, and a transmission gear is rotatably mounted inside the hollow cylinder, with the inner sidewall of the rotating ring meshing with the transmission gear.

[0008] Preferably, a movable rod is slidably connected inside the hollow cylinder, and one end of the movable rod is fixedly connected to a second limiting end.

[0009] Preferably, the grounding lead body passes through the inner side of the second limiting end and the first limiting end.

[0010] Preferably, a lead screw is rotatably mounted at the center of the hollow cylinder, and the lead screw is threadedly connected to the inner wall of the movable rod.

[0011] Preferably, a driven gear is fixedly installed at one end of the lead screw, and the driven gear meshes with the transmission gear.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, the first limiting mechanism and the second limiting mechanism form a double limiting on the transformer base and the shell respectively, which stably constrains the lead wire from two points, solves the defect of traditional single limiting is easily affected by vibration, and improves the stability of the grounding path. By setting a threaded connection structure between the threaded rod and the positioning block in the first limiting mechanism, the position of the first limiting end can be adjusted by the extension rod. With the rotation adaptability of the bending plate, the lateral position of the lead wire can be accurately adjusted.

[0013] 2. In this utility model, the second limiting mechanism simultaneously drives the second limiting end to slide axially through the gear transmission of the rotating ring, transmission gear, and driven gear, combined with the thread transmission of the lead screw and the movable rod. This achieves precise adjustment of the longitudinal position of the lead wire, solves the problem that traditional limiting mechanisms cannot accurately adapt to installation requirements, ensures that the grounding lead wire is always in a stable grounding path state, and reduces safety hazards caused by lead wire displacement. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a transformer core grounding lead structure proposed in this utility model; Figure 2 This is a schematic diagram of the bottom structure of a transformer core grounding lead structure proposed in this utility model; Figure 3 This is a schematic diagram of the first limiting mechanism of a transformer core grounding lead structure proposed in this utility model; Figure 4 This is a schematic diagram of the internal structure of the second limiting mechanism of a transformer core grounding lead structure proposed in this utility model.

[0015] Legend: 1. Grounding lead body; 2. First connector; 3. Second connector; 4. First limiting mechanism; 5. Second limiting mechanism; 41. Positioning block; 42. Bending plate; 43. First limiting end; 44. Threaded rod; 45. Extension rod; 51. Base; 52. Hollow cylinder; 53. Second limiting end; 54. Rotary ring; 55. Transmission gear; 56. Driven gear; 57. Lead screw; 58. Movable rod. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a transformer core grounding lead structure, including a grounding lead body 1. One end of the grounding lead body 1 is rotatably connected to a second connector 3, and the other end of the grounding lead body 1 is rotatably connected to a first connector 2. A second limiting mechanism 5 and a first limiting mechanism 4 are sleeved on the outer wall of the grounding lead body 1. The first limiting mechanism 4 is set on the transformer base, and the second limiting mechanism 5 is set on the transformer shell. The first limiting mechanism 4 includes a positioning block 41, a bending plate 42, and a first limiting end 43. One end of the first limiting end 43 is fixedly connected to an extension rod 45. The bending plate 42 is rotatably installed at the junction of the first limiting end 43 and the extension rod 45. The positioning block 41 is welded to one side of the transformer base, and the other end of the first limiting end 43 is fixedly connected to a threaded rod 44, which is threadedly connected inside the positioning block 41.

[0019] The specific setup and function of this embodiment are described below. The grounding lead body 1 is the core conductive component, with its two ends rotatably connected to the first connector 2 and the second connector 3, respectively. The first connector 2 is used to connect to the metal plate connected to the ground, and the second connector 3 is used to connect to the end on the transformer box shell. The first limiting mechanism 4 and the second limiting mechanism 5 respectively play a fixing role. The positioning block 41 of the first limiting mechanism 4 is welded to one side of the transformer base as a fixing base. The first limiting end 43 is threadedly connected to the positioning block 41 through the threaded rod 44 at the other end. The position of the first limiting end 43 can be adjusted by rotating the extension rod 45. The bending plate 42 is used to connect other carriers. After the position of the first limiting end 43 is determined, the grounding lead body 1 is passed through it. The second limiting mechanism 5 is fixed on the transformer shell and works with the first limiting mechanism 4 to limit the grounding lead body 1 from two places to prevent it from shifting.

[0020] Example 2: Figure 1 and Figure 2 As shown, the second limiting mechanism 5 includes a base 51 and a hollow cylinder 52. The bottom of the base 51 is bolted to the transformer housing, and the hollow cylinder 52 is bolted to the top of the base 51. A rotating ring 54 is rotatably mounted on the outer wall of the hollow cylinder 52, and a transmission gear 55 is rotatably mounted inside the hollow cylinder 52. The inner side wall of the rotating ring 54 meshes with the transmission gear 55. A movable rod 58 is slidably connected inside the hollow cylinder 52. One end of the movable rod 58 is fixedly connected to a second limiting end 53. The grounding lead body 1 passes through the inner side of the second limiting end 53 and the first limiting end 43. A lead screw 57 is rotatably mounted at the center of the hollow cylinder 52. The lead screw 57 is threadedly connected to the inner side wall of the movable rod 58. A driven gear 56 is fixedly mounted at one end of the lead screw 57, and the driven gear 56 meshes with the transmission gear 55.

[0021] The overall effect of this embodiment is that the base 51 is fixed to the transformer shell with bolts, and the hollow cylinder 52 is then fixed to the top of the base 51 with bolts, forming the main frame of the mechanism. When it is necessary to adjust the limiting position of the grounding lead body 1, the rotating ring 54 on the outer wall of the hollow cylinder 52 is rotated. The rotating ring 54 drives the transmission gear 55, which in turn drives the lead screw 57 through meshing with the driven gear 56. This drives the movable rod 58 to slide along the axial direction of the hollow cylinder 52, causing the second limiting end 53 to move accordingly, thereby adjusting the grounding lead body 1. The bolt connection between the base 51 and the hollow cylinder 52 facilitates disassembly and assembly of the mechanism and subsequent maintenance. The threaded transmission between the lead screw 57 and the movable rod 58 can precisely control the movement distance of the second limiting end 53, ensuring that the limiting force on the grounding lead body 1 is moderate and avoiding displacement due to excessive looseness or damage to the lead due to excessive tightness.

[0022] The usage and working principle of this device are as follows: First, the positioning block 41 is welded to one side of the transformer base as a basic fixing structure. By rotating the extension rod 45, the threaded rod 44 at the other end of the first limiting end 43 is rotated inside the positioning block 41 to adjust the position of the first limiting end 43. Then, the bending plate 42 is rotated to connect to the corresponding carrier. Subsequently, one end of the grounding lead body 1 is inserted into the inside of the first limiting end 43, and the other end of the grounding lead body 1 is inserted into the inside of the second limiting end 53 of the second limiting mechanism 5. Then, the second limiting mechanism 5 is installed. First, the bottom of the base 51 is installed on the transformer shell with bolts, and then the hollow cylinder 52 is fixed to the base with bolts. At the top of 51, the framework of the second limiting mechanism 5 is completed. Then, according to the installation requirements of the grounding lead body 1, the rotating ring 54 on the outer wall of the hollow cylinder 52 is rotated. The inner side wall of the rotating ring 54 drives the transmission gear 55 to rotate. The transmission gear 55 then drives the driven gear 56 meshing with it, so that the lead screw 57 rotates synchronously and drives the movable rod 58 to slide along the axial direction of the hollow cylinder 52. The second limiting end 53 moves accordingly until the position of the grounding lead body 1 is stable. Finally, the first connector 2 rotatably connected to one end of the grounding lead body 1 is connected to the metal plate connected to the ground, and the second connector 3 rotatably connected to the other end of the grounding lead body 1 is connected to the end on the transformer box shell, thus completing the installation and use of the entire transformer core grounding lead structure.

[0023] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A transformer core grounding lead structure, comprising a grounding lead body (1), characterized in that: One end of the grounding lead body (1) is rotatably connected to a second connector (3), and the other end of the grounding lead body (1) is rotatably connected to a first connector (2). A second limiting mechanism (5) and a first limiting mechanism (4) are sleeved on the outer wall of the grounding lead body (1). The first limiting mechanism (4) is set on the transformer base, and the second limiting mechanism (5) is set on the transformer shell. The first limiting mechanism (4) includes a positioning block (41), a bending plate (42), and a first limiting end (43). One end of the first limiting end (43) is fixedly connected to an extension rod (45). The bending plate (42) is rotatably installed at the junction of the first limiting end (43) and the extension rod (45). The positioning block (41) is welded to one side of the transformer base. The other end of the first limiting end (43) is fixedly connected to a threaded rod (44). The threaded rod (44) is threadedly connected inside the positioning block (41).

2. The transformer core grounding lead structure according to claim 1, characterized in that: The second limiting mechanism (5) includes a base (51) and a hollow cylinder (52). The bottom of the base (51) is bolted to the transformer housing, and the hollow cylinder (52) is bolted to the top of the base (51).

3. The transformer core grounding lead structure according to claim 2, characterized in that: A rotating ring (54) is rotatably mounted on the outer wall of the hollow cylinder (52), and a transmission gear (55) is rotatably mounted inside the hollow cylinder (52). The inner side wall of the rotating ring (54) meshes with the transmission gear (55).

4. The transformer core grounding lead structure according to claim 2, characterized in that: The hollow cylinder (52) is slidably connected to a movable rod (58), and one end of the movable rod (58) is fixedly connected to a second limiting end (53).

5. The transformer core grounding lead structure according to claim 1, characterized in that: The grounding lead body (1) is threaded through the inner side of the second limiting end (53) and the first limiting end (43).

6. The transformer core grounding lead structure according to claim 2, characterized in that: A lead screw (57) is rotatably mounted at the center of the hollow cylinder (52), and the lead screw (57) is threadedly connected to the inner wall of the movable rod (58).

7. The transformer core grounding lead structure according to claim 6, characterized in that: One end of the lead screw (57) is fixedly mounted with a driven gear (56), which meshes with the transmission gear (55).

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