Lightweight structure of mining flame-proof transformer shell

Abstract

The utility model discloses a mining flame-proof transformer shell lightweight structure, and relates to the technical field of flame-proof transformers, the mining flame-proof transformer shell lightweight structure comprises a shell, the top end of the shell is fixedly connected with a top strip, the middle part of the inner wall of the top strip is provided with a sliding groove, the top of the inner side of the sliding groove is provided with a plurality of cavities, the cavities are internally provided with sliding blocks, and the sliding blocks are arranged in the sliding grooves. A round ball is movably embedded in the bottom end of the sliding block, a top cover is movably connected to the inner side of the sliding groove, an extension plate is fixedly connected to one side wall of the top cover, a plurality of bolts movably penetrate through the middle of the extension plate in a threaded mode, first corrugated plates are embedded in the two side walls of the shell correspondingly, and second corrugated plates are embedded in the front face and the back face of the shell correspondingly; a top groove is formed in the middle of the top end of the top cover. By arranging a series of structures, the top cover and the shell can be conveniently disassembled and assembled, the time consumed for disassembling and assembling the top cover is saved, and meanwhile the probability that the mining explosion-proof transformer is subjected to spontaneous explosion due to the fact that the bearing pressure is exceeded can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of flameproof transformers, in particular to a lightweight shell structure of a flameproof transformer for mining. Background Art

[0002] Mining flameproof transformers are suitable for use in mines with methane mixed gas and coal dust and explosion hazards. They provide power to various power equipment and electrical devices, and have protection functions such as loss of pressure, overload, short circuit, leakage and temperature. Therefore, in order to meet the flameproof requirements, the transformer casing is usually designed to be bulky.

[0003] When the existing mining flameproof transformer casing is in use, the top cover and the shell are usually fixed at the joint surface by bolts. Since the joint surfaces are all designed according to flameproof requirements, a large number of bolts are required, making the process of disassembling and assembling the top cover on the casing relatively cumbersome and time-consuming. In addition, the surface of the existing mining flameproof transformer casing is mostly flat. When the internal pressure of the transformer suddenly increases, the flat surface of the casing cannot absorb the impact caused by the sudden pressure increase, making the transformer more likely to explode after exceeding the bearing pressure. Utility Model Content

[0004] The purpose of the utility model is to provide a lightweight structure of a mining flameproof transformer casing to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lightweight structure of a mining explosion-proof transformer casing, comprising a shell, the top of the shell is fixedly connected to a top strip, a slide groove is provided in the middle of the inner wall of the top strip, a plurality of cavities are provided at the top inside the slide groove, a slider is provided inside the cavity, a ball is movably embedded in the bottom end of the slider, a top cover is movably connected to the inner side of the slide groove, one side wall of the top cover is fixedly connected to an extension plate, a plurality of bolts are passed through the middle movable thread of the extension plate, a first corrugated plate is embedded in both side walls of the shell, and a second corrugated plate is embedded in the front and back of the shell.

[0006] Preferably, a top groove is provided in the middle of the top end of the top cover, and a heat sink is fixedly connected to the bottom end of the top cover.

[0007] Preferably, corner bars are fixedly connected to both corners of the bottom of the shell, and a card slot is provided on the inner side of the corner bar, and the top cover is movably connected to the card slot.

[0008] Preferably, a screw hole is provided on the top of the front surface of the shell, the bolt is threadably engaged with the screw hole through an extension plate, and the top cover is movably connected to the shell through the screw hole.

[0009] Preferably, a spring is movably connected to the top of the inner side of the cavity, the bottom end of the spring is fixedly connected to the slider, and the slider is movably embedded in the cavity through the spring.

[0010] Preferably, the ball is movably connected to the slide groove via a slider, and the top cover is movably connected to the ball via the slide groove.

[0011] Preferably, both side walls of the first corrugated plate and the second corrugated plate are fixedly connected with a plurality of transverse strips.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The lightweight structure of the mining flameproof transformer casing uses a top bar, a slide groove and an extension plate. When the top cover of the casing is connected to the top of the shell, three sides of the top cover can be embedded in the top bar through the slide groove, and only the remaining side of the top cover needs to be fixed with bolts. This method can reduce the number of bolts, thereby facilitating the disassembly and assembly of the top cover and the shell, saving time spent on disassembly and assembly of the top cover.

[0014] 2. The lightweight structure of the shell of the mining flameproof transformer uses the first corrugated plate, the second corrugated plate, the slider and the spring. When the pressure inside the shell suddenly increases, the corrugated plate on the shell can absorb part of the impact caused by the pressure. At the same time, the pressure can be lifted by the slider and spring that press the top cover, so that a gap appears between the top cover and the shell, which is used to release the pressure in the closed shell, thereby reducing the probability of the mining flameproof transformer exploding due to exceeding the pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the top bar and slide structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the slider and ball structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the corner strip and slot structure of the utility model.

[0019] In the figure: 1. Top cover; 2. Top groove; 3. Shell; 4. First corrugated plate; 5. Corner bar; 6. Second corrugated plate; 7. Bolt; 8. Slide groove; 9. Screw hole; 10. Extension plate; 11. Top bar; 12. Heat sink; 13. Cavity; 14. Spring; 15. Slider; 16. Ball; 17. Slot. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean 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 an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1 to 4 As shown, the lightweight structure of the mining explosion-proof transformer casing in this embodiment includes a shell 3, the top of the shell 3 is fixedly connected to a top strip 11, a slide groove 8 is opened in the middle of the inner wall of the top strip 11, a plurality of cavities 13 are opened at the top inside the slide groove 8, a slider 15 is provided inside the cavity 13, a ball 16 is movably embedded in the bottom end of the slider 15, a top cover 1 is movably connected to the inner side of the slide groove 8, an extension plate 10 is fixedly connected to one side wall of the top cover 1, a plurality of bolts 7 are movably threaded through the middle of the extension plate 10, a first corrugated plate 4 is embedded in both side walls of the shell 3, and a second corrugated plate 6 is embedded in the front and back of the shell 3.

[0024] Specifically, an opening is provided at the top of the shell 3 for placing and removing electrical components required for the operation of the transformer, thereby facilitating the maintenance of the transformer. The top strip 11 and the top of the shell 3 are an integrated structure, so that after the top cover 1 is engaged with the slide groove 8 in the top strip 11, the top cover 1 and the shell 3 are joined, thereby facilitating the assembly of the transformer shell. The thickness of the slide groove 8 is thicker than that of the top cover 1, so that the top cover 1 can slide smoothly into the interior of the slide groove 8, while providing space for the subsequent lifting of the top cover 1, thereby facilitating the subsequent lifting and pressure relief of the top cover 1. The cross-section of the cavity 13 is a "rectangular", which can provide sufficient space for the deformation of the spring 14 and the sliding of the slider 15. The outer diameter of the slider 15 is the same as the outer diameter of the cavity 13. The inner diameters are adapted so that the slider 15 can slide against the inner wall of the cavity 13, thereby facilitating the stability of the slider 15 sliding in the cavity 13. The surface of the ball 16 is smooth, and its function is to convert the sliding friction between the top cover 1 and the slider 15 into rolling friction, so that the top cover 1 is easier to be pushed into the slide groove 8. The function of the extension plate 10 is to facilitate the connection and fixation of the top cover 1 and the shell 3. The first corrugated plate 4 and the second corrugated plate 6 are both integrally connected to the outer wall of the shell 3, which can change the wall of the shell 3 from a flat shape to a corrugated shape, which is more conducive to the wall of the shell 3 absorbing the impact caused by the explosion, and at the same time can also reduce the weight of the shell 3, making the shell 3 more lightweight, and can also increase the heat dissipation area of the shell 3, which is more conducive to the heat dissipation of the shell 3.

[0025] Furthermore, a top groove 2 is provided in the middle of the top of the top cover 1, and a heat sink 12 is fixedly connected to the bottom end of the top cover 1. The top groove 2 facilitates pushing the top cover 1 to slide out along the slide groove 8. The function of the heat sink 12 is to accelerate the conduction speed of the heat inside the shell 3 to the top of the top cover 1, thereby making it more conducive to heat dissipation of the transformer.

[0026] Furthermore, corner strips 5 are fixedly connected at both corners of the bottom of the shell 3, and a card slot 17 is provided on the inner side of the corner strips 5. The top cover 1 is movably connected to the card slot 17. The function of the corner strips 5 is to facilitate placing the removed top cover 1 on one side of the shell 3, thereby facilitating the subsequent assembly of the top cover 1 with the shell 3.

[0027] Furthermore, a screw hole 9 is provided at the top of the front side of the shell 3, and the bolt 7 is threadedly engaged with the screw hole 9 through the extension plate 10. The top cover 1 is movably connected to the shell 3 through the screw hole 9. After the bolt 7 is engaged with the screw hole 9, the top cover 1 will be fixed to the top of the shell 3, thereby ensuring that the top cover 1 does not slide out of the slide groove 8, thereby increasing the stability of the top cover 1 and the shell 3 after assembly.

[0028] Furthermore, a spring 14 is movably connected to the top inside the cavity 13, and the bottom end of the spring 14 is fixedly connected to the slider 15. The slider 15 is movably embedded in the cavity 13 through the spring 14. The elastic force generated by the spring 14's own deformation can push the slider 15 to slide up and down in the cavity 13, thereby achieving contact between the ball 16 and the top of the top cover 1.

[0029] Furthermore, the ball 16 is movably connected to the slide groove 8 through the slider 15, and the top cover 1 is movably connected to the ball 16 through the slide groove 8. After the top cover 1 is pushed into the slide groove 8, the spring 14 will be pushed upward and generate a downward reaction force, so that the slider 15 and the ball 16 can be close to the top of the top cover 1, thereby facilitating the ball 16 to slide against the top cover 1.

[0030] Furthermore, both side walls of the first corrugated plate 4 and the second corrugated plate 6 are fixedly connected with a plurality of transverse strips, and the function of the transverse strips is to absorb the impact generated by the explosion, thereby improving the explosion-proof capability of the shell.

[0031] The method of using this embodiment is as follows: when it is necessary to assemble the top cover 1 of the mining explosion-proof transformer with the shell 3, the top cover 1 can be first pulled out upward from the slot 17 of the angle bar 5, and then the top cover 1 can be pulled out and the side away from the extension plate 10 can be aligned with the slide groove 8 on the inner side of the top bar 11 of the shell 3, and then the top cover 1 can be pushed in along the slide groove 8. At this time, the top cover 1 will slide along the inner wall of the slide groove 8, and at the same time, the ball 16 located at the top of the inner side of the slide groove 8 will contact the top of the top cover 1 and be pushed by the top cover 1, so that the ball 16 and the slider 15 are pushed upward, causing the spring 14 in the cavity 13 to undergo elastic deformation and generate a downward reaction force, causing the ball 16 to roll against the top surface of the top cover 1. When the top cover 1 cannot be pushed anymore, the end of the screw on the extension plate 10 will contact the screw hole 9 on the shell 3, and then the screw can be screwed in The screw holes 9 are inserted and tightened, so that the extension plate 10 moves toward the front of the shell 3, and the top cover 1 continues to slide along the slide groove 8 until the extension plate 10 is tightly attached to the front of the shell 3, and the assembly of the shell is completed. When the pressure inside the shell increases sharply, part of the interior of the shell 3 will rush to the first corrugated plate 4 and the second corrugated plate 6 on the inner wall of the shell 3 to be absorbed, and the other pressure will rush to the top cover 1. At this time, due to the upward impact force on the top cover 1, the top cover 1 is pushed upward, and the ball 16 and the slider 15 are pushed upward again, causing the spring 14 to deform. At this time, the edge of the top surface of the top cover 1 will fit with the top of the inner side of the slide groove 8, so that a gap is generated between the top cover 1 and the bottom of the slide groove 8, and then part of the pressure in the shell 3 will be released from the gap, so that the internal pressure of the shell 3 is maintained within the pressure range that the shell can withstand, making the shell not easy to explode.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A lightweight structure of a flameproof transformer housing for mining, comprising a housing (3), characterized in that: The top of the shell (3) is fixedly connected to a top strip (11), a slide groove (8) is provided in the middle of the inner wall of the top strip (11), a plurality of cavities (13) are provided on the top of the inner side of the slide groove (8), a slider (15) is provided inside the cavity (13), a ball (16) is movably embedded in the bottom end of the slider (15), a top cover (1) is movably connected to the inner side of the slide groove (8), an extension plate (10) is fixedly connected to one side wall of the top cover (1), a plurality of bolts (7) are movably threaded through the middle of the extension plate (10), a first corrugated plate (4) is embedded in both side walls of the shell (3), and a second corrugated plate (6) is embedded in both the front and back sides of the shell (3).

2. The lightweight structure of a mining flameproof transformer housing according to claim 1 is characterized in that: A top groove (2) is provided in the middle of the top end of the top cover (1), and a heat sink (12) is fixedly connected to the bottom end of the top cover (1).

3. The lightweight structure of a mining flameproof transformer housing according to claim 1 is characterized in that: Corner bars (5) are fixedly connected to the two corners of the bottom of the shell (3), a card slot (17) is provided on the inner side of the corner bar (5), and the top cover (1) is movably connected to the card slot (17).

4. The lightweight structure of a mining flameproof transformer housing according to claim 1, characterized in that: A screw hole (9) is provided on the top of the front face of the shell (3), the bolt (7) is threadedly engaged with the screw hole (9) through an extension plate (10), and the top cover (1) is movably connected to the shell (3) through the screw hole (9).

5. The lightweight structure of the explosion-proof transformer housing for mining use according to claim 1 is characterized in that: The top of the inner side of the cavity (13) is movably connected to a spring (14), the bottom end of the spring (14) is fixedly connected to the slider (15), and the slider (15) is movably embedded in the cavity (13) through the spring (14).

6. The lightweight structure of a mining flameproof transformer housing according to claim 1, characterized in that: The ball (16) is movably connected to the slide groove (8) via a slider (15), and the top cover (1) is movably connected to the ball (16) via the slide groove (8).

7. The lightweight structure of a mining flameproof transformer housing according to claim 1, characterized in that: Both side walls of the first corrugated plate (4) and the second corrugated plate (6) are fixedly connected with a plurality of transverse strips.

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