Impact-resistant core fixing structure of mine explosion-proof dry-type transformer

Abstract

This utility model relates to the field of dry-type transformer technology, specifically to an impact-resistant core fixing structure for a mine-use explosion-proof dry-type transformer. It includes a core body, a support frame, a buffer mechanism, and an installation mechanism. The core body can be installed and detached from the support frame via channel steel clamps. The buffer mechanism acts as a buffer against the channel steel clamps. The installation mechanism is used to assemble and disassemble the buffer mechanism. The buffer mechanism includes a buffer plate, a guide post, and a spring. The guide post is fixedly installed on the channel steel clamps, and the buffer plate is inserted into the guide post. This impact-resistant core fixing structure for a mine-use explosion-proof dry-type transformer, through its buffer mechanism, can disperse and reduce the impact force when the channel steel clamps are subjected to impact, thereby reducing the impact force on the core body and the tie rod, thus improving the performance and reducing the service life of the mine-use explosion-proof dry-type transformer.

Description

Technical Field

[0001] This utility model relates to the field of dry-type transformer technology, specifically to an impact-resistant core fixing structure for a mine explosion-proof dry-type transformer. Background Technology

[0002] Dry-type transformers operate based on the principle of electromagnetic induction. When an AC voltage is applied to the high-voltage winding, an alternating magnetic field is generated in the iron core. Due to electromagnetic induction, the magnetic lines of force passing through the low-voltage winding change continuously, thereby inducing an electromotive force in the low-voltage winding. When the external circuit is connected, electrical energy is output, realizing the transfer of electrical energy from the high-voltage side to the low-voltage side and voltage transformation. The explosion-proof dry-type transformer for mining is a dry-type transformer with an explosion-proof enclosure that is used independently without high- or low-voltage switches. It is suitable for places with explosion hazards, such as underground coal mines.

[0003] The core fixing structure of existing explosion-proof dry-type transformers for mining typically consists of the core, clamps, and insulation components. The front and rear clamps are tightened by tie rods and nuts, firmly fixing the core between the clamps and preventing displacement of the core column and yoke under external impact. The core uses high-quality cold-rolled silicon steel sheets and a multi-stage step-type fully oblique joint lamination structure, combined with the tie rod structure, which can effectively reduce no-load loss and no-load current. At the same time, the cut edges of the core sheets are coated with anti-rust liquid, and the surfaces of the core column and lower yoke are coated with high-temperature resistant anti-rust and moisture-proof paint, which improves the rust and moisture resistance of the core and enhances the stability and reliability of the structure.

[0004] Considering the existing core fixing structure of explosion-proof dry-type transformers for mining, the core is clamped and fixed by channel steel clamps. When the channel steel clamps are subjected to impact and vibration, the impact force is easily transmitted to the core body and the tie rod. When the transmitted impact force is too large, it can easily cause the tie rod to loosen and the core body to shift, which in turn reduces the performance and service life of the explosion-proof dry-type transformer for mining. Utility Model Content

[0005] The purpose of this utility model is to provide an impact-resistant core fixing structure for explosion-proof dry-type transformers used in mining.

[0006] To achieve this objective, the present invention adopts the following technical solution: An impact-resistant core fixing structure is provided for an explosion-proof dry-type transformer for mining, including a core body, a support frame, a buffer mechanism, and an installation mechanism. The core body can be installed and removed from the support frame via channel steel clamps. The buffer mechanism is used to buffer the channel steel clamps, and the installation mechanism is used to install and remove the buffer mechanism. The buffer mechanism includes a buffer plate, a guide post, and a spring. The guide post is fixedly installed on the channel steel clamp, the buffer plate is inserted and installed on the guide post, one end of the spring is fixedly connected to the channel steel clamp, and the other end of the spring is in contact with the buffer plate.

[0007] Furthermore, the buffer mechanism also includes a hinge block, a movable plate, and a fixed plate. The hinge block is inserted into the buffer plate, the movable plate is hinged to the hinge block via a connecting rod, and the fixed plate is fixedly installed on the channel steel clamp. The fixed plate and the movable plate are connected by a buffer spring.

[0008] Furthermore, the buffer mechanism also includes a telescopic rod, one end of which is fixedly connected to the fixed plate, and the other end of which is fixedly connected to the movable plate.

[0009] Furthermore, the telescopic rod is filled with damping fluid.

[0010] Furthermore, the buffer mechanism also includes a triangular block, which is fixedly installed on the channel steel clamp and has a T-slot. The buffer plate is inserted into the T-slot through the T-block.

[0011] Furthermore, the installation mechanism includes a snap-fit ​​block, which is connected to the hinge block via a limit spring, and the snap-fit ​​block and the hinge block are slidably connected. A snap-fit ​​groove is provided on the buffer plate, and the snap-fit ​​block snaps into the snap-fit ​​groove.

[0012] The beneficial effects of this utility model are as follows: The impact-resistant core fixing structure of this explosion-proof dry-type transformer for mining, through the buffer mechanism, can disperse and reduce the impact force when the channel steel clamp is subjected to impact, thereby reducing the impact force on the core body and the tie rod, thus improving the performance and service life of the explosion-proof dry-type transformer for mining. In addition, the installation mechanism facilitates the installation and removal of the buffer plate, making it easy to maintain and replace the buffer plate, further improving the working efficiency and performance of the core fixing structure of the explosion-proof dry-type transformer for mining. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments of this utility model will be briefly introduced below.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of the buffer mechanism of this utility model; Figure 3 This is a schematic diagram of the channel steel clamp structure of this utility model; Figure 4 This is a schematic diagram of the main structure of the buffer plate of this utility model; Figure 5 This is a schematic diagram of the disassembled hinge block structure of this utility model.

[0015] In the diagram: 1. Iron core body; 2. Channel steel clamp; 3. Support frame; 4. Buffer mechanism; 41. Buffer plate; 42. Guide column; 43. Spring; 44. Hinge block; 45. Connecting rod; 46. Moving plate; 47. Buffer spring; 48. Telescopic rod; 49. Fixed plate; 410. Triangular block; 411. T-slot; 412. T-block; 5. Installation mechanism; 51. Snap-fit ​​block; 52. Limiting spring; 53. Snap-fit ​​groove. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0018] Reference Figure 1 and Figure 2 The impact-resistant core fixing structure of the explosion-proof dry-type transformer for mining shown includes a core body 1, a support frame 3, a buffer mechanism 4, and an installation mechanism 5. The core body 1 can be installed and disassembled on the support frame 3 by means of channel steel clamps 2. Four channel steel clamps 2 are provided, which are used to fix the front and rear, upper and lower ends of the core body 1 respectively. Adjacent front and rear channel steel clamps 2 are tightened and fixed by tie rods and nuts. The buffer mechanism 4 is used to buffer the channel steel clamps 2, thereby reducing the impact force on the core body 1 and the tie rod, and improving the service life of the channel steel clamps 2. The installation mechanism 5 is used to install and disassemble the buffer mechanism 4, thereby facilitating the installation, disassembly and replacement of the buffer plate 41.

[0019] Reference Figures 2 to 4 The buffer mechanism 4 includes a buffer plate 41, a guide post 42, and a spring 43. The guide post 42 is fixedly installed on the channel steel clamp 2. The guide post 42 is used to support and guide the buffer plate 41 to prevent the buffer plate 41 from shifting when moving. The buffer plate 41 is inserted and installed on the guide post 42. The buffer plate 41 disperses and reduces the impact force on the channel steel clamp 2, thereby improving the impact resistance of the channel steel clamp 2. One end of the spring 43 is fixedly connected to the channel steel clamp 2, and the other end of the spring 43 is in contact with the buffer plate 41. When the buffer plate 41 is subjected to an impact force, it will transfer the impact force to the spring 43. The elastic force of the spring 43 will generate a reaction force on the buffer plate 41, thereby reducing part of the impact force.

[0020] Reference Figure 3 and Figure 5The buffer mechanism 4 also includes a hinge block 44, a movable plate 46, and a fixed plate 49. The hinge block 44 is inserted into the buffer plate 41. By inserting the hinge block 44 into the buffer plate 41, the buffer plate 41 can be installed on the hinge block 44. The movable plate 46 is hinged to the hinge block 44 through a connecting rod 45. The buffer plate 41 can transmit part of the impact force to the hinge block 44, causing the hinge block 44 to move and drive the connecting rod 45 and the movable plate 46 to move. The fixed plate 49 is fixedly installed on the channel steel clamp 2, and the fixed plate 49 and the movable plate 46 are connected by a buffer spring 47. When the movable plate 46 moves, it will squeeze the buffer spring 47. Through the elastic force of the buffer spring 47, part of the impact force is reduced again.

[0021] Reference Figure 2 and Figure 3 The buffer mechanism 4 also includes a telescopic rod 48. One end of the telescopic rod 48 is fixedly connected to the fixed plate 49, and the other end is fixedly connected to the movable plate 46. The telescopic rod 48 guides the movable plate 46 and protects the buffer spring 47, preventing deformation of the buffer spring 47. The telescopic rod 48 is filled with damping fluid. By filling the telescopic rod 48 with damping fluid, the extension and retraction speed of the telescopic rod 48 is slowed down, which in turn slows down the movement speed of the movable plate 46, thereby further reducing the impact force.

[0022] Reference Figure 2 and Figure 3 The buffer mechanism 4 also includes a triangular block 410, which is fixedly installed on the channel steel clamp 2. The triangular block 410 has a T-slot 411. The triangular block 410 is used to increase the friction between the pull screw and the nut and prevent the pull screw and the nut from loosening. The buffer plate 41 is inserted into the T-slot 411 through the T-block 412. The movement of the T-block 412 along the T-slot 411 can further improve the stability of the buffer plate 41 when moving, so that the impact force is distributed more evenly.

[0023] Reference Figure 4 and Figure 5 The installation mechanism 5 includes a snap-fit ​​block 51, which is connected to the hinge block 44 via a limiting spring 52. The snap-fit ​​block 51 and the hinge block 44 are slidably connected. Through the elastic force of the limiting spring 52, the snap-fit ​​block 51 is always snapped into the snap-fit ​​groove 53 when no external force is applied. The buffer plate 41 has a snap-fit ​​groove 53, and the snap-fit ​​block 51 snaps into the snap-fit ​​groove 53. Through the snap-fit ​​effect of the snap-fit ​​block 51 and the snap-fit ​​groove 53, the hinge block 44 can limit the buffer plate 41, so that the buffer plate 41 remains fixed.

[0024] Reference Figures 1 to 5The impact-resistant core fixing structure of this explosion-proof dry-type transformer for mining uses a buffer mechanism to disperse and reduce the impact force when the channel steel clamps are subjected to impact. This reduces the impact force on the core body and tie rod, thereby improving the performance and extending the service life of the explosion-proof dry-type transformer. In addition, the installation mechanism facilitates the installation and removal of the buffer plate, making maintenance and replacement easier and further improving the working efficiency and performance of the core fixing structure of the explosion-proof dry-type transformer for mining.

[0025] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.

Claims

1. An impact-resistant core fixing structure of a mine explosion-proof dry-type transformer, characterized by, It includes a core body (1), a support frame (3), a buffer mechanism (4) and an installation mechanism (5). The core body (1) can be installed and disassembled on the support frame (3) through a channel steel clamp (2). The buffer mechanism (4) is used to buffer the channel steel clamp (2). The installation mechanism (5) is used to install and disassemble the buffer mechanism (4). The buffer mechanism (4) includes a buffer plate (41), a guide post (42) and a spring (43). The guide post (42) is fixedly installed on the channel steel clamp (2). The buffer plate (41) is inserted and installed on the guide post (42). One end of the spring (43) is fixedly connected to the channel steel clamp (2), and the other end of the spring (43) is in contact with the buffer plate (41).

2. The impact-resistant core fixing structure of the explosion-proof dry-type transformer for mining as described in claim 1, characterized in that, The buffer mechanism (4) further includes a hinge block (44), a movable plate (46) and a fixed plate (49). The hinge block (44) is inserted into the buffer plate (41). The movable plate (46) is hinged to the hinge block (44) through a connecting rod (45). The fixed plate (49) is fixedly installed on the channel steel clamp (2), and the fixed plate (49) and the movable plate (46) are connected by a buffer spring (47).

3. The impact-resistant core fixing structure of the mine explosion-proof dry-type transformer according to claim 2, characterized in that, The buffer mechanism (4) also includes a telescopic rod (48), one end of which is fixedly connected to the fixed plate (49), and the other end of which is fixedly connected to the movable plate (46).

4. The impact-resistant core fixing structure of the mine explosion-proof dry-type transformer according to claim 3, characterized in that, The telescopic rod (48) is filled with damping fluid.

5. The impact-resistant core fixing structure of the mine explosion-proof dry-type transformer according to claim 2, characterized in that, The buffer mechanism (4) also includes a triangular block (410), which is fixedly installed on the channel steel clamp (2), and a T-slot (411) is provided on the triangular block (410). The buffer plate (41) is inserted into the T-slot (411) through the T-block (412).

6. The impact-resistant core fixing structure of the mine explosion-proof dry-type transformer according to claim 2, characterized in that, The installation mechanism (5) includes a snap-fit ​​block (51), which is connected to the hinge block (44) via a limiting spring (52) and the snap-fit ​​block (51) and the hinge block (44) are slidably connected. The buffer plate (41) has a snap-fit ​​groove (53) and the snap-fit ​​block (51) snaps into the snap-fit ​​groove (53).

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