Iron core clamp tightening structure

Abstract

The utility model relates to the technical field of transformers, and provides an iron core clamping piece tightening structure which comprises an iron core and two clamping plates, the two clamping plates are located on the two sides of the iron core respectively and are symmetrically arranged, and insulating clamping blocks are arranged between the iron core and the clamping plates. A plurality of connecting pieces which are uniformly distributed in a rectangular array are arranged at the top of the clamping plate, connecting holes are formed in the connecting pieces, the interiors of the two connecting pieces are jointly connected with a pull screw rod through the connecting holes, threads are arranged at the two ends of the pull screw rod, an insulating pipe is embedded in the outer circumferential surface of the pull screw rod, and the outer circumferential surface of the pull screw rod is connected with the insulating pipe. The two sides of the insulating tube are provided with insulating sleeves which are symmetrically arranged, the connecting structure is arranged on the clamping plate, production can be achieved only by reserving the position of a connecting piece in the clamping plate production process, welding fixation is not needed, integral forming is achieved, production is more convenient and faster, and the strength is higher.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically to a core clamping structure. Background Technology

[0002] Currently, the iron core is an important component of the transformer's internal structure. It has high magnetic permeability, converts the primary circuit into magnetic energy, and then converts the magnetic energy into electrical energy in the secondary circuit. The iron core is also the internal skeleton of the transformer, supporting most of the components, and its presence effectively reduces the overall size of the transformer.

[0003] Power transformers have noise control requirements, and many transformers operating in or around cities have even stricter noise control requirements. One of the biggest sources of noise in transformers is the iron core. After the transformer is energized, the iron cores vibrate due to the electromagnetic field, thus generating noise.

[0004] In existing technologies, steel tie rods and support components are generally used to tighten and fix the iron core. The support components often require multiple welding points during the production process, resulting in a large workload in the early stages of production. Although steel tie rods do not require welding during production, they still require multiple welding points during installation, resulting in a large workload during installation. Therefore, the installation is relatively complicated and costly. Summary of the Invention

[0005] This utility model proposes a core clamping structure, which solves the problems of complicated installation and high cost in related technologies.

[0006] The technical solution of this utility model is as follows:

[0007] To achieve the above objectives, this utility model provides the following technical solution: a core clamping structure, comprising an iron core and two clamping plates, wherein the two clamping plates are respectively located on both sides of the iron core and are arranged symmetrically, and an insulating clamping block is provided between the iron core and the clamping plates;

[0008] The top of the clamping plate is provided with several connectors arranged in a rectangular array. Each connector has a connecting hole inside. Two connectors are connected to a pull screw through the connecting hole. Both ends of the pull screw are threaded. An insulating tube is nested on the outer circumference of the pull screw. Insulating sleeves are symmetrically arranged on both sides of the insulating tube. The diameter of the outer surface of the insulating sleeve is the same as the diameter of the connecting hole. Part of the insulating sleeve is located inside the connecting hole. Fasteners are threaded to both ends of the pull screw.

[0009] Preferably, the insulating tube is made of epoxy resin and the insulating sleeve is made of hard rubber. The use of insulating materials such as hard rubber and epoxy resin ensures safety during use. In addition, the above materials have good heat resistance and maintain stable performance in high-temperature environments.

[0010] Preferably, the interior of the insulating clamp has several heat dissipation grooves arranged in a rectangular array to prevent heat accumulation at the insulating clamp.

[0011] Preferably, one side of the insulating sleeve is provided with an annular protrusion. The annular protrusion prevents the fastener from directly contacting the clamping plate and prevents current transmission, thereby ensuring that the clamping plate and the fastener are not directly knocked out and reducing wear.

[0012] The working principle and beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by setting a connecting structure on the clamping plate, only requires reserving the position of the connecting parts during the production process of the clamping plate, and can realize production without welding and fixing. It is integrally formed, making production more convenient and stronger.

[0014] 2. This utility model features a structure including a pull screw and fasteners. The pull screw is a cylindrical rod-shaped workpiece, which makes processing more convenient. Furthermore, the threaded connection between the pull screw and the fasteners enables more precise adjustment of the clamping force and more convenient clamping and fixing, eliminating the need for welding. In addition, long-term fixing can be achieved by using anti-loosening nuts.

[0015] 3. This utility model reduces heat accumulation at the insulating clamp by setting an insulating clamp with a gap between the iron core and the clamping plate.

[0016] 4. By incorporating insulating materials into structures such as insulating sleeves, insulating tubes, and insulating clamps, this utility model can effectively prevent current conduction and improve safety. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a top view of the present invention;

[0020] Figure 3 This is an enlarged view of reference numeral A in this utility model;

[0021] Figure 4 This is a schematic diagram of the insulating sleeve structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the insulating clamp structure of this utility model.

[0023] In the diagram: 1. Pull screw; 2. Insulating sleeve; 3. Clamping plate; 4. Iron core; 5. Fastener; 6. Insulating tube; 7. Insulating clamp block. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0025] like Figures 1-5 As shown, this embodiment proposes a core clamping structure, including a core 4 and two clamping plates 3. The two clamping plates 3 are located on both sides of the core 4 and are arranged symmetrically. An insulating clamping block 7 is provided between the core 4 and the clamping plates 3.

[0026] The top of the clamping plate 3 is provided with several connectors arranged in a rectangular array. The connectors have connecting holes inside. The interior of two connectors are connected to a pull screw 1 through the connecting hole. The two ends of the pull screw 1 are provided with threads. An insulating tube 6 is nested on the outer circumference of the pull screw 1. The insulating sleeves 2 are arranged symmetrically on both sides of the insulating tube 6. The diameter of the outer surface of the insulating sleeve 2 is the same as the diameter of the connecting hole. Part of the insulating sleeve 2 is located inside the connecting hole. Fasteners 5 are threaded to both ends of the pull screw 1.

[0027] like Figures 1-5 As shown, the insulating tube 6 is made of epoxy resin, and the insulating sleeve 2 is made of hard rubber. The use of insulating materials such as hard rubber and epoxy resin ensures safety during use. In addition, the above materials have good heat resistance and maintain stable performance in high-temperature environments.

[0028] like Figures 1-5 As shown, the interior of the insulating clamp 7 has several heat dissipation grooves arranged in a rectangular array to prevent heat accumulation at the insulating clamp 7. One side of the insulating sleeve 2 is provided with an annular protrusion, which places the fastener 5 in direct contact with the clamp 3 to prevent current transmission, thereby ensuring that the clamp 3 and the fastener 5 do not directly contact each other and reducing wear.

[0029] In this embodiment, several connectors are reserved as needed during the production of the clamping plate 3, and holes are drilled inside the connectors afterward to complete the processing of the clamping plate 3.

[0030] Next, take out two connectors, align the connectors on the clamp plate 3, insert the insulating sleeve 2 into the inside of the connectors, then insert the pull screw 1 into the inside of the two insulating sleeves 2, and install the fasteners 5 on both sides by thread to complete the tightening of the iron core 4.

[0031] Not only are the shapes of the pull screw 1 and the connecting parts convenient to manufacture, but the welding step is also eliminated during the installation process, which improves the efficiency of installation and clamping. In addition, the tightness of clamping can be adjusted by adjusting the fastener 5 as needed.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A core clamp tightening structure characterized by comprising: Including iron core (4) and two clamping plates (3), two clamping plates (3) are respectively located on both sides of the iron core (4), two clamping plates (3) are symmetrically arranged, the iron core (4) and the clamping plate (3) are provided with insulating clamping block (7) between them; The top of the clamping plate (3) is provided with a plurality of rectangular array uniformly distributed connecting pieces, the inside of the connecting piece is provided with a connecting hole, the inside of two connecting pieces is connected by the connecting hole and is provided with a pull screw (1), the both ends of the pull screw (1) are provided with threads, the outer circumferential surface of the pull screw (1) is nested with an insulating tube (6), the both sides of the insulating tube (6) are provided with symmetrically arranged insulating sleeves (2), the diameter of the outer surface of the insulating sleeve (2) is the same as the diameter of the connecting hole, part of the insulating sleeve (2) is located in the inside of the connecting hole, the both ends of the pull screw (1) are respectively threaded with fasteners (5).

2. The core clamp structure according to claim 1, wherein The insulating tube (6) is made of epoxy resin, the insulating sleeve (2) is made of hard rubber material, the use of hard rubber and epoxy resin can ensure the safety during use, the above-mentioned material has good heat resistance and stable performance under high temperature environment.

3. The core clamp structure according to claim 1, wherein The inside of the insulating clamping block (7) is provided with a plurality of rectangular array uniformly distributed heat dissipation grooves, to prevent heat accumulation at the insulating clamping block (7).

4. The core clamp structure according to claim 1, wherein One side of the insulating sleeve (2) is provided with a ring-shaped protrusion, the ring-shaped protrusion is placed in contact with the clamping plate (3) and the fastener (5), to prevent current transmission, to ensure that the clamping plate (3) and the fastener (5) are not in direct contact, and to reduce wear and tear.

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